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 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
;
899 /* Only those DW_TAG_GNU_call_site's in this function that have
900 DW_AT_GNU_tail_call set are linked in this list. Function without its
901 tail call list complete (DW_AT_GNU_all_tail_call_sites or its superset
902 DW_AT_GNU_all_call_sites) has TAIL_CALL_LIST NULL, even if some
903 DW_TAG_GNU_call_site's exist in such function. */
904 struct call_site
*tail_call_list
;
907 /* A place where a function gets called from, represented by
908 DW_TAG_GNU_call_site. It can be looked up from symtab->call_site_htab. */
912 /* Address of the first instruction after this call. It must be the first
913 field as we overload core_addr_hash and core_addr_eq for it. */
916 /* List successor with head in FUNC_TYPE.TAIL_CALL_LIST. */
917 struct call_site
*tail_call_next
;
919 /* Describe DW_AT_GNU_call_site_target. Missing attribute uses
920 FIELD_LOC_KIND_DWARF_BLOCK with FIELD_DWARF_BLOCK == NULL. */
923 union field_location loc
;
925 /* Discriminant for union field_location. */
926 ENUM_BITFIELD(field_loc_kind
) loc_kind
: 2;
930 /* Size of the PARAMETER array. */
931 unsigned parameter_count
;
933 /* CU of the function where the call is located. It gets used for DWARF
934 blocks execution in the parameter array below. */
935 struct dwarf2_per_cu_data
*per_cu
;
937 /* Describe DW_TAG_GNU_call_site's DW_TAG_formal_parameter. */
938 struct call_site_parameter
940 /* DW_TAG_formal_parameter's DW_AT_location's DW_OP_regX as DWARF
941 register number, for register passed parameters. If -1 then use
945 /* Offset from the callee's frame base, for stack passed parameters.
946 This equals offset from the caller's stack pointer. Valid only if
947 DWARF_REGNUM is -1. */
950 /* DW_TAG_formal_parameter's DW_AT_GNU_call_site_value. It is never
952 const gdb_byte
*value
;
955 /* DW_TAG_formal_parameter's DW_AT_GNU_call_site_data_value. It may be
956 NULL if not provided by DWARF. */
957 const gdb_byte
*data_value
;
958 size_t data_value_size
;
963 /* The default value of TYPE_CPLUS_SPECIFIC(T) points to the
964 this shared static structure. */
966 extern const struct cplus_struct_type cplus_struct_default
;
968 extern void allocate_cplus_struct_type (struct type
*);
970 #define INIT_CPLUS_SPECIFIC(type) \
971 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_CPLUS_STUFF, \
972 TYPE_RAW_CPLUS_SPECIFIC (type) = (struct cplus_struct_type*) \
973 &cplus_struct_default)
975 #define ALLOCATE_CPLUS_STRUCT_TYPE(type) allocate_cplus_struct_type (type)
977 #define HAVE_CPLUS_STRUCT(type) \
978 (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_CPLUS_STUFF \
979 && TYPE_RAW_CPLUS_SPECIFIC (type) != &cplus_struct_default)
981 extern const struct gnat_aux_type gnat_aux_default
;
983 extern void allocate_gnat_aux_type (struct type
*);
985 #define INIT_GNAT_SPECIFIC(type) \
986 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_GNAT_STUFF, \
987 TYPE_GNAT_SPECIFIC (type) = (struct gnat_aux_type *) &gnat_aux_default)
988 #define ALLOCATE_GNAT_AUX_TYPE(type) allocate_gnat_aux_type (type)
989 /* A macro that returns non-zero if the type-specific data should be
990 read as "gnat-stuff". */
991 #define HAVE_GNAT_AUX_INFO(type) \
992 (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_GNAT_STUFF)
994 #define INIT_FUNC_SPECIFIC(type) \
995 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_FUNC, \
996 TYPE_MAIN_TYPE (type)->type_specific.func_stuff \
997 = TYPE_ZALLOC (type, \
998 sizeof (*TYPE_MAIN_TYPE (type)->type_specific.func_stuff)))
1000 #define TYPE_INSTANCE_FLAGS(thistype) (thistype)->instance_flags
1001 #define TYPE_MAIN_TYPE(thistype) (thistype)->main_type
1002 #define TYPE_NAME(thistype) TYPE_MAIN_TYPE(thistype)->name
1003 #define TYPE_TAG_NAME(type) TYPE_MAIN_TYPE(type)->tag_name
1004 #define TYPE_TARGET_TYPE(thistype) TYPE_MAIN_TYPE(thistype)->target_type
1005 #define TYPE_POINTER_TYPE(thistype) (thistype)->pointer_type
1006 #define TYPE_REFERENCE_TYPE(thistype) (thistype)->reference_type
1007 #define TYPE_CHAIN(thistype) (thistype)->chain
1008 /* Note that if thistype is a TYPEDEF type, you have to call check_typedef.
1009 But check_typedef does set the TYPE_LENGTH of the TYPEDEF type,
1010 so you only have to call check_typedef once. Since allocate_value
1011 calls check_typedef, TYPE_LENGTH (VALUE_TYPE (X)) is safe. */
1012 #define TYPE_LENGTH(thistype) (thistype)->length
1013 /* Note that TYPE_CODE can be TYPE_CODE_TYPEDEF, so if you want the real
1014 type, you need to do TYPE_CODE (check_type (this_type)). */
1015 #define TYPE_CODE(thistype) TYPE_MAIN_TYPE(thistype)->code
1016 #define TYPE_NFIELDS(thistype) TYPE_MAIN_TYPE(thistype)->nfields
1017 #define TYPE_FIELDS(thistype) TYPE_MAIN_TYPE(thistype)->flds_bnds.fields
1019 #define TYPE_INDEX_TYPE(type) TYPE_FIELD_TYPE (type, 0)
1020 #define TYPE_RANGE_DATA(thistype) TYPE_MAIN_TYPE(thistype)->flds_bnds.bounds
1021 #define TYPE_LOW_BOUND(range_type) TYPE_RANGE_DATA(range_type)->low
1022 #define TYPE_HIGH_BOUND(range_type) TYPE_RANGE_DATA(range_type)->high
1023 #define TYPE_LOW_BOUND_UNDEFINED(range_type) \
1024 TYPE_RANGE_DATA(range_type)->low_undefined
1025 #define TYPE_HIGH_BOUND_UNDEFINED(range_type) \
1026 TYPE_RANGE_DATA(range_type)->high_undefined
1028 /* Moto-specific stuff for FORTRAN arrays. */
1030 #define TYPE_ARRAY_UPPER_BOUND_IS_UNDEFINED(arraytype) \
1031 TYPE_HIGH_BOUND_UNDEFINED(TYPE_INDEX_TYPE(arraytype))
1032 #define TYPE_ARRAY_LOWER_BOUND_IS_UNDEFINED(arraytype) \
1033 TYPE_LOW_BOUND_UNDEFINED(TYPE_INDEX_TYPE(arraytype))
1035 #define TYPE_ARRAY_UPPER_BOUND_VALUE(arraytype) \
1036 (TYPE_HIGH_BOUND(TYPE_INDEX_TYPE((arraytype))))
1038 #define TYPE_ARRAY_LOWER_BOUND_VALUE(arraytype) \
1039 (TYPE_LOW_BOUND(TYPE_INDEX_TYPE((arraytype))))
1043 #define TYPE_VPTR_BASETYPE(thistype) TYPE_MAIN_TYPE(thistype)->vptr_basetype
1044 #define TYPE_DOMAIN_TYPE(thistype) TYPE_MAIN_TYPE(thistype)->vptr_basetype
1045 #define TYPE_VPTR_FIELDNO(thistype) TYPE_MAIN_TYPE(thistype)->vptr_fieldno
1046 #define TYPE_FN_FIELDS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->fn_fields
1047 #define TYPE_NFN_FIELDS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->nfn_fields
1048 #define TYPE_SPECIFIC_FIELD(thistype) \
1049 TYPE_MAIN_TYPE(thistype)->type_specific_field
1050 #define TYPE_TYPE_SPECIFIC(thistype) TYPE_MAIN_TYPE(thistype)->type_specific
1051 /* We need this tap-dance with the TYPE_RAW_SPECIFIC because of the case
1052 where we're trying to print an Ada array using the C language.
1053 In that case, there is no "cplus_stuff", but the C language assumes
1054 that there is. What we do, in that case, is pretend that there is
1055 an implicit one which is the default cplus stuff. */
1056 #define TYPE_CPLUS_SPECIFIC(thistype) \
1057 (!HAVE_CPLUS_STRUCT(thistype) \
1058 ? (struct cplus_struct_type*)&cplus_struct_default \
1059 : TYPE_RAW_CPLUS_SPECIFIC(thistype))
1060 #define TYPE_RAW_CPLUS_SPECIFIC(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.cplus_stuff
1061 #define TYPE_FLOATFORMAT(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.floatformat
1062 #define TYPE_GNAT_SPECIFIC(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.gnat_stuff
1063 #define TYPE_DESCRIPTIVE_TYPE(thistype) TYPE_GNAT_SPECIFIC(thistype)->descriptive_type
1064 #define TYPE_CALLING_CONVENTION(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.func_stuff->calling_convention
1065 #define TYPE_TAIL_CALL_LIST(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.func_stuff->tail_call_list
1066 #define TYPE_BASECLASS(thistype,index) TYPE_FIELD_TYPE(thistype, index)
1067 #define TYPE_N_BASECLASSES(thistype) TYPE_CPLUS_SPECIFIC(thistype)->n_baseclasses
1068 #define TYPE_BASECLASS_NAME(thistype,index) TYPE_FIELD_NAME(thistype, index)
1069 #define TYPE_BASECLASS_BITPOS(thistype,index) TYPE_FIELD_BITPOS(thistype,index)
1070 #define BASETYPE_VIA_PUBLIC(thistype, index) \
1071 ((!TYPE_FIELD_PRIVATE(thistype, index)) && (!TYPE_FIELD_PROTECTED(thistype, index)))
1072 #define TYPE_CPLUS_DYNAMIC(thistype) TYPE_CPLUS_SPECIFIC (thistype)->is_dynamic
1073 #define TYPE_CPLUS_REALLY_JAVA(thistype) TYPE_CPLUS_SPECIFIC (thistype)->is_java
1075 #define BASETYPE_VIA_VIRTUAL(thistype, index) \
1076 (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits == NULL ? 0 \
1077 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (index)))
1079 #define FIELD_TYPE(thisfld) ((thisfld).type)
1080 #define FIELD_NAME(thisfld) ((thisfld).name)
1081 #define FIELD_LOC_KIND(thisfld) ((thisfld).loc_kind)
1082 #define FIELD_BITPOS(thisfld) ((thisfld).loc.bitpos)
1083 #define FIELD_STATIC_PHYSNAME(thisfld) ((thisfld).loc.physname)
1084 #define FIELD_STATIC_PHYSADDR(thisfld) ((thisfld).loc.physaddr)
1085 #define FIELD_DWARF_BLOCK(thisfld) ((thisfld).loc.dwarf_block)
1086 #define SET_FIELD_BITPOS(thisfld, bitpos) \
1087 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_BITPOS, \
1088 FIELD_BITPOS (thisfld) = (bitpos))
1089 #define SET_FIELD_PHYSNAME(thisfld, name) \
1090 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_PHYSNAME, \
1091 FIELD_STATIC_PHYSNAME (thisfld) = (name))
1092 #define SET_FIELD_PHYSADDR(thisfld, addr) \
1093 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_PHYSADDR, \
1094 FIELD_STATIC_PHYSADDR (thisfld) = (addr))
1095 #define SET_FIELD_DWARF_BLOCK(thisfld, addr) \
1096 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_DWARF_BLOCK, \
1097 FIELD_DWARF_BLOCK (thisfld) = (addr))
1098 #define FIELD_ARTIFICIAL(thisfld) ((thisfld).artificial)
1099 #define FIELD_BITSIZE(thisfld) ((thisfld).bitsize)
1101 #define TYPE_FIELD(thistype, n) TYPE_MAIN_TYPE(thistype)->flds_bnds.fields[n]
1102 #define TYPE_FIELD_TYPE(thistype, n) FIELD_TYPE(TYPE_FIELD(thistype, n))
1103 #define TYPE_FIELD_NAME(thistype, n) FIELD_NAME(TYPE_FIELD(thistype, n))
1104 #define TYPE_FIELD_LOC_KIND(thistype, n) FIELD_LOC_KIND (TYPE_FIELD (thistype, n))
1105 #define TYPE_FIELD_BITPOS(thistype, n) FIELD_BITPOS (TYPE_FIELD (thistype, n))
1106 #define TYPE_FIELD_STATIC_PHYSNAME(thistype, n) FIELD_STATIC_PHYSNAME (TYPE_FIELD (thistype, n))
1107 #define TYPE_FIELD_STATIC_PHYSADDR(thistype, n) FIELD_STATIC_PHYSADDR (TYPE_FIELD (thistype, n))
1108 #define TYPE_FIELD_DWARF_BLOCK(thistype, n) FIELD_DWARF_BLOCK (TYPE_FIELD (thistype, n))
1109 #define TYPE_FIELD_ARTIFICIAL(thistype, n) FIELD_ARTIFICIAL(TYPE_FIELD(thistype,n))
1110 #define TYPE_FIELD_BITSIZE(thistype, n) FIELD_BITSIZE(TYPE_FIELD(thistype,n))
1111 #define TYPE_FIELD_PACKED(thistype, n) (FIELD_BITSIZE(TYPE_FIELD(thistype,n))!=0)
1113 #define TYPE_FIELD_PRIVATE_BITS(thistype) \
1114 TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits
1115 #define TYPE_FIELD_PROTECTED_BITS(thistype) \
1116 TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits
1117 #define TYPE_FIELD_IGNORE_BITS(thistype) \
1118 TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits
1119 #define TYPE_FIELD_VIRTUAL_BITS(thistype) \
1120 TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits
1121 #define SET_TYPE_FIELD_PRIVATE(thistype, n) \
1122 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n))
1123 #define SET_TYPE_FIELD_PROTECTED(thistype, n) \
1124 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n))
1125 #define SET_TYPE_FIELD_IGNORE(thistype, n) \
1126 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits, (n))
1127 #define SET_TYPE_FIELD_VIRTUAL(thistype, n) \
1128 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n))
1129 #define TYPE_FIELD_PRIVATE(thistype, n) \
1130 (TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits == NULL ? 0 \
1131 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n)))
1132 #define TYPE_FIELD_PROTECTED(thistype, n) \
1133 (TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits == NULL ? 0 \
1134 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n)))
1135 #define TYPE_FIELD_IGNORE(thistype, n) \
1136 (TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits == NULL ? 0 \
1137 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits, (n)))
1138 #define TYPE_FIELD_VIRTUAL(thistype, n) \
1139 (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits == NULL ? 0 \
1140 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n)))
1142 #define TYPE_FN_FIELDLISTS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists
1143 #define TYPE_FN_FIELDLIST(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n]
1144 #define TYPE_FN_FIELDLIST1(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].fn_fields
1145 #define TYPE_FN_FIELDLIST_NAME(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].name
1146 #define TYPE_FN_FIELDLIST_LENGTH(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].length
1148 #define TYPE_N_TEMPLATE_ARGUMENTS(thistype) \
1149 TYPE_CPLUS_SPECIFIC (thistype)->n_template_arguments
1150 #define TYPE_TEMPLATE_ARGUMENTS(thistype) \
1151 TYPE_CPLUS_SPECIFIC (thistype)->template_arguments
1152 #define TYPE_TEMPLATE_ARGUMENT(thistype, n) \
1153 TYPE_CPLUS_SPECIFIC (thistype)->template_arguments[n]
1155 #define TYPE_FN_FIELD(thisfn, n) (thisfn)[n]
1156 #define TYPE_FN_FIELD_PHYSNAME(thisfn, n) (thisfn)[n].physname
1157 #define TYPE_FN_FIELD_TYPE(thisfn, n) (thisfn)[n].type
1158 #define TYPE_FN_FIELD_ARGS(thisfn, n) TYPE_FIELDS ((thisfn)[n].type)
1159 #define TYPE_FN_FIELD_CONST(thisfn, n) ((thisfn)[n].is_const)
1160 #define TYPE_FN_FIELD_VOLATILE(thisfn, n) ((thisfn)[n].is_volatile)
1161 #define TYPE_FN_FIELD_PRIVATE(thisfn, n) ((thisfn)[n].is_private)
1162 #define TYPE_FN_FIELD_PROTECTED(thisfn, n) ((thisfn)[n].is_protected)
1163 #define TYPE_FN_FIELD_PUBLIC(thisfn, n) ((thisfn)[n].is_public)
1164 #define TYPE_FN_FIELD_STATIC(thisfn, n) ((thisfn)[n].is_static)
1165 #define TYPE_FN_FIELD_FINAL(thisfn, n) ((thisfn)[n].is_final)
1166 #define TYPE_FN_FIELD_SYNCHRONIZED(thisfn, n) ((thisfn)[n].is_synchronized)
1167 #define TYPE_FN_FIELD_NATIVE(thisfn, n) ((thisfn)[n].is_native)
1168 #define TYPE_FN_FIELD_ARTIFICIAL(thisfn, n) ((thisfn)[n].is_artificial)
1169 #define TYPE_FN_FIELD_ABSTRACT(thisfn, n) ((thisfn)[n].is_abstract)
1170 #define TYPE_FN_FIELD_STUB(thisfn, n) ((thisfn)[n].is_stub)
1171 #define TYPE_FN_FIELD_FCONTEXT(thisfn, n) ((thisfn)[n].fcontext)
1172 #define TYPE_FN_FIELD_VOFFSET(thisfn, n) ((thisfn)[n].voffset-2)
1173 #define TYPE_FN_FIELD_VIRTUAL_P(thisfn, n) ((thisfn)[n].voffset > 1)
1174 #define TYPE_FN_FIELD_STATIC_P(thisfn, n) ((thisfn)[n].voffset == VOFFSET_STATIC)
1176 #define TYPE_LOCALTYPE_PTR(thistype) (TYPE_CPLUS_SPECIFIC(thistype)->localtype_ptr)
1177 #define TYPE_LOCALTYPE_FILE(thistype) (TYPE_CPLUS_SPECIFIC(thistype)->localtype_ptr->file)
1178 #define TYPE_LOCALTYPE_LINE(thistype) (TYPE_CPLUS_SPECIFIC(thistype)->localtype_ptr->line)
1180 #define TYPE_TYPEDEF_FIELD_ARRAY(thistype) \
1181 TYPE_CPLUS_SPECIFIC (thistype)->typedef_field
1182 #define TYPE_TYPEDEF_FIELD(thistype, n) \
1183 TYPE_CPLUS_SPECIFIC (thistype)->typedef_field[n]
1184 #define TYPE_TYPEDEF_FIELD_NAME(thistype, n) \
1185 TYPE_TYPEDEF_FIELD (thistype, n).name
1186 #define TYPE_TYPEDEF_FIELD_TYPE(thistype, n) \
1187 TYPE_TYPEDEF_FIELD (thistype, n).type
1188 #define TYPE_TYPEDEF_FIELD_COUNT(thistype) \
1189 TYPE_CPLUS_SPECIFIC (thistype)->typedef_field_count
1191 #define TYPE_IS_OPAQUE(thistype) \
1192 (((TYPE_CODE (thistype) == TYPE_CODE_STRUCT) \
1193 || (TYPE_CODE (thistype) == TYPE_CODE_UNION)) \
1194 && (TYPE_NFIELDS (thistype) == 0) \
1195 && (!HAVE_CPLUS_STRUCT (thistype) \
1196 || TYPE_NFN_FIELDS (thistype) == 0) \
1197 && (TYPE_STUB (thistype) || !TYPE_STUB_SUPPORTED (thistype)))
1199 /* A helper macro that returns the name of a type or "unnamed type" if the type
1201 #define TYPE_SAFE_NAME(type) \
1202 (TYPE_NAME (type) ? TYPE_NAME (type) : _("<unnamed type>"))
1204 /* A helper macro that returns the name of an error type. If the type
1205 has a name, it is used; otherwise, a default is used. */
1206 #define TYPE_ERROR_NAME(type) \
1207 (TYPE_NAME (type) ? TYPE_NAME (type) : _("<error type>"))
1211 /* Integral types. */
1213 /* Implicit size/sign (based on the architecture's ABI). */
1214 struct type
*builtin_void
;
1215 struct type
*builtin_char
;
1216 struct type
*builtin_short
;
1217 struct type
*builtin_int
;
1218 struct type
*builtin_long
;
1219 struct type
*builtin_signed_char
;
1220 struct type
*builtin_unsigned_char
;
1221 struct type
*builtin_unsigned_short
;
1222 struct type
*builtin_unsigned_int
;
1223 struct type
*builtin_unsigned_long
;
1224 struct type
*builtin_float
;
1225 struct type
*builtin_double
;
1226 struct type
*builtin_long_double
;
1227 struct type
*builtin_complex
;
1228 struct type
*builtin_double_complex
;
1229 struct type
*builtin_string
;
1230 struct type
*builtin_bool
;
1231 struct type
*builtin_long_long
;
1232 struct type
*builtin_unsigned_long_long
;
1233 struct type
*builtin_decfloat
;
1234 struct type
*builtin_decdouble
;
1235 struct type
*builtin_declong
;
1237 /* "True" character types.
1238 We use these for the '/c' print format, because c_char is just a
1239 one-byte integral type, which languages less laid back than C
1240 will print as ... well, a one-byte integral type. */
1241 struct type
*builtin_true_char
;
1242 struct type
*builtin_true_unsigned_char
;
1244 /* Explicit sizes - see C9X <intypes.h> for naming scheme. The "int0"
1245 is for when an architecture needs to describe a register that has
1247 struct type
*builtin_int0
;
1248 struct type
*builtin_int8
;
1249 struct type
*builtin_uint8
;
1250 struct type
*builtin_int16
;
1251 struct type
*builtin_uint16
;
1252 struct type
*builtin_int32
;
1253 struct type
*builtin_uint32
;
1254 struct type
*builtin_int64
;
1255 struct type
*builtin_uint64
;
1256 struct type
*builtin_int128
;
1257 struct type
*builtin_uint128
;
1259 /* Wide character types. */
1260 struct type
*builtin_char16
;
1261 struct type
*builtin_char32
;
1263 /* Pointer types. */
1265 /* `pointer to data' type. Some target platforms use an implicitly
1266 {sign,zero} -extended 32-bit ABI pointer on a 64-bit ISA. */
1267 struct type
*builtin_data_ptr
;
1269 /* `pointer to function (returning void)' type. Harvard
1270 architectures mean that ABI function and code pointers are not
1271 interconvertible. Similarly, since ANSI, C standards have
1272 explicitly said that pointers to functions and pointers to data
1273 are not interconvertible --- that is, you can't cast a function
1274 pointer to void * and back, and expect to get the same value.
1275 However, all function pointer types are interconvertible, so void
1276 (*) () can server as a generic function pointer. */
1277 struct type
*builtin_func_ptr
;
1279 /* `function returning pointer to function (returning void)' type.
1280 The final void return type is not significant for it. */
1281 struct type
*builtin_func_func
;
1284 /* Special-purpose types. */
1286 /* This type is used to represent a GDB internal function. */
1287 struct type
*internal_fn
;
1290 /* Return the type table for the specified architecture. */
1291 extern const struct builtin_type
*builtin_type (struct gdbarch
*gdbarch
);
1294 /* Per-objfile types used by symbol readers. */
1298 /* Basic types based on the objfile architecture. */
1299 struct type
*builtin_void
;
1300 struct type
*builtin_char
;
1301 struct type
*builtin_short
;
1302 struct type
*builtin_int
;
1303 struct type
*builtin_long
;
1304 struct type
*builtin_long_long
;
1305 struct type
*builtin_signed_char
;
1306 struct type
*builtin_unsigned_char
;
1307 struct type
*builtin_unsigned_short
;
1308 struct type
*builtin_unsigned_int
;
1309 struct type
*builtin_unsigned_long
;
1310 struct type
*builtin_unsigned_long_long
;
1311 struct type
*builtin_float
;
1312 struct type
*builtin_double
;
1313 struct type
*builtin_long_double
;
1315 /* This type is used to represent symbol addresses. */
1316 struct type
*builtin_core_addr
;
1318 /* This type represents a type that was unrecognized in symbol read-in. */
1319 struct type
*builtin_error
;
1321 /* Types used for symbols with no debug information. */
1322 struct type
*nodebug_text_symbol
;
1323 struct type
*nodebug_text_gnu_ifunc_symbol
;
1324 struct type
*nodebug_got_plt_symbol
;
1325 struct type
*nodebug_data_symbol
;
1326 struct type
*nodebug_unknown_symbol
;
1327 struct type
*nodebug_tls_symbol
;
1330 /* Return the type table for the specified objfile. */
1331 extern const struct objfile_type
*objfile_type (struct objfile
*objfile
);
1334 /* Explicit floating-point formats. See "floatformat.h". */
1335 extern const struct floatformat
*floatformats_ieee_half
[BFD_ENDIAN_UNKNOWN
];
1336 extern const struct floatformat
*floatformats_ieee_single
[BFD_ENDIAN_UNKNOWN
];
1337 extern const struct floatformat
*floatformats_ieee_double
[BFD_ENDIAN_UNKNOWN
];
1338 extern const struct floatformat
*floatformats_ieee_double_littlebyte_bigword
[BFD_ENDIAN_UNKNOWN
];
1339 extern const struct floatformat
*floatformats_i387_ext
[BFD_ENDIAN_UNKNOWN
];
1340 extern const struct floatformat
*floatformats_m68881_ext
[BFD_ENDIAN_UNKNOWN
];
1341 extern const struct floatformat
*floatformats_arm_ext
[BFD_ENDIAN_UNKNOWN
];
1342 extern const struct floatformat
*floatformats_ia64_spill
[BFD_ENDIAN_UNKNOWN
];
1343 extern const struct floatformat
*floatformats_ia64_quad
[BFD_ENDIAN_UNKNOWN
];
1344 extern const struct floatformat
*floatformats_vax_f
[BFD_ENDIAN_UNKNOWN
];
1345 extern const struct floatformat
*floatformats_vax_d
[BFD_ENDIAN_UNKNOWN
];
1346 extern const struct floatformat
*floatformats_ibm_long_double
[BFD_ENDIAN_UNKNOWN
];
1349 /* Allocate space for storing data associated with a particular type.
1350 We ensure that the space is allocated using the same mechanism that
1351 was used to allocate the space for the type structure itself. I.e.
1352 if the type is on an objfile's objfile_obstack, then the space for data
1353 associated with that type will also be allocated on the objfile_obstack.
1354 If the type is not associated with any particular objfile (such as
1355 builtin types), then the data space will be allocated with xmalloc,
1356 the same as for the type structure. */
1358 #define TYPE_ALLOC(t,size) \
1359 (TYPE_OBJFILE_OWNED (t) \
1360 ? obstack_alloc (&TYPE_OBJFILE (t) -> objfile_obstack, size) \
1363 #define TYPE_ZALLOC(t,size) \
1364 (TYPE_OBJFILE_OWNED (t) \
1365 ? memset (obstack_alloc (&TYPE_OBJFILE (t)->objfile_obstack, size), \
1369 /* Use alloc_type to allocate a type owned by an objfile.
1370 Use alloc_type_arch to allocate a type owned by an architecture.
1371 Use alloc_type_copy to allocate a type with the same owner as a
1372 pre-existing template type, no matter whether objfile or gdbarch. */
1373 extern struct type
*alloc_type (struct objfile
*);
1374 extern struct type
*alloc_type_arch (struct gdbarch
*);
1375 extern struct type
*alloc_type_copy (const struct type
*);
1377 /* Return the type's architecture. For types owned by an architecture,
1378 that architecture is returned. For types owned by an objfile, that
1379 objfile's architecture is returned. */
1380 extern struct gdbarch
*get_type_arch (const struct type
*);
1382 /* Helper function to construct objfile-owned types. */
1383 extern struct type
*init_type (enum type_code
, int, int, char *,
1386 /* Helper functions to construct architecture-owned types. */
1387 extern struct type
*arch_type (struct gdbarch
*, enum type_code
, int, char *);
1388 extern struct type
*arch_integer_type (struct gdbarch
*, int, int, char *);
1389 extern struct type
*arch_character_type (struct gdbarch
*, int, int, char *);
1390 extern struct type
*arch_boolean_type (struct gdbarch
*, int, int, char *);
1391 extern struct type
*arch_float_type (struct gdbarch
*, int, char *,
1392 const struct floatformat
**);
1393 extern struct type
*arch_complex_type (struct gdbarch
*, char *,
1396 /* Helper functions to construct a struct or record type. An
1397 initially empty type is created using arch_composite_type().
1398 Fields are then added using append_composite_type_field*(). A union
1399 type has its size set to the largest field. A struct type has each
1400 field packed against the previous. */
1402 extern struct type
*arch_composite_type (struct gdbarch
*gdbarch
,
1403 char *name
, enum type_code code
);
1404 extern void append_composite_type_field (struct type
*t
, char *name
,
1405 struct type
*field
);
1406 extern void append_composite_type_field_aligned (struct type
*t
,
1410 struct field
*append_composite_type_field_raw (struct type
*t
, char *name
,
1411 struct type
*field
);
1413 /* Helper functions to construct a bit flags type. An initially empty
1414 type is created using arch_flag_type(). Flags are then added using
1415 append_flag_type_flag(). */
1416 extern struct type
*arch_flags_type (struct gdbarch
*gdbarch
,
1417 char *name
, int length
);
1418 extern void append_flags_type_flag (struct type
*type
, int bitpos
, char *name
);
1420 extern void make_vector_type (struct type
*array_type
);
1421 extern struct type
*init_vector_type (struct type
*elt_type
, int n
);
1423 extern struct type
*lookup_reference_type (struct type
*);
1425 extern struct type
*make_reference_type (struct type
*, struct type
**);
1427 extern struct type
*make_cv_type (int, int, struct type
*, struct type
**);
1429 extern void replace_type (struct type
*, struct type
*);
1431 extern int address_space_name_to_int (struct gdbarch
*, char *);
1433 extern const char *address_space_int_to_name (struct gdbarch
*, int);
1435 extern struct type
*make_type_with_address_space (struct type
*type
,
1436 int space_identifier
);
1438 extern struct type
*lookup_memberptr_type (struct type
*, struct type
*);
1440 extern struct type
*lookup_methodptr_type (struct type
*);
1442 extern void smash_to_method_type (struct type
*type
, struct type
*domain
,
1443 struct type
*to_type
, struct field
*args
,
1444 int nargs
, int varargs
);
1446 extern void smash_to_memberptr_type (struct type
*, struct type
*,
1449 extern void smash_to_methodptr_type (struct type
*, struct type
*);
1451 extern struct type
*allocate_stub_method (struct type
*);
1453 extern char *type_name_no_tag (const struct type
*);
1455 extern const char *type_name_no_tag_or_error (struct type
*type
);
1457 extern struct type
*lookup_struct_elt_type (struct type
*, char *, int);
1459 extern struct type
*make_pointer_type (struct type
*, struct type
**);
1461 extern struct type
*lookup_pointer_type (struct type
*);
1463 extern struct type
*make_function_type (struct type
*, struct type
**);
1465 extern struct type
*lookup_function_type (struct type
*);
1467 extern struct type
*create_range_type (struct type
*, struct type
*, LONGEST
,
1470 extern struct type
*create_array_type (struct type
*, struct type
*,
1472 extern struct type
*lookup_array_range_type (struct type
*, int, int);
1474 extern struct type
*create_string_type (struct type
*, struct type
*,
1476 extern struct type
*lookup_string_range_type (struct type
*, int, int);
1478 extern struct type
*create_set_type (struct type
*, struct type
*);
1480 extern struct type
*lookup_unsigned_typename (const struct language_defn
*,
1481 struct gdbarch
*,char *);
1483 extern struct type
*lookup_signed_typename (const struct language_defn
*,
1484 struct gdbarch
*,char *);
1486 extern struct type
*check_typedef (struct type
*);
1488 #define CHECK_TYPEDEF(TYPE) \
1490 (TYPE) = check_typedef (TYPE); \
1493 extern void check_stub_method_group (struct type
*, int);
1495 extern char *gdb_mangle_name (struct type
*, int, int);
1497 extern struct type
*lookup_typename (const struct language_defn
*,
1498 struct gdbarch
*, const char *,
1499 const struct block
*, int);
1501 extern struct type
*lookup_template_type (char *, struct type
*,
1504 extern int get_vptr_fieldno (struct type
*, struct type
**);
1506 extern int get_discrete_bounds (struct type
*, LONGEST
*, LONGEST
*);
1508 extern int get_array_bounds (struct type
*type
, LONGEST
*low_bound
,
1509 LONGEST
*high_bound
);
1511 extern int class_types_same_p (const struct type
*, const struct type
*);
1513 extern int is_ancestor (struct type
*, struct type
*);
1515 extern int is_public_ancestor (struct type
*, struct type
*);
1517 extern int is_unique_ancestor (struct type
*, struct value
*);
1519 /* Overload resolution */
1521 #define LENGTH_MATCH(bv) ((bv)->rank[0])
1523 /* Badness if parameter list length doesn't match arg list length. */
1524 extern const struct rank LENGTH_MISMATCH_BADNESS
;
1526 /* Dummy badness value for nonexistent parameter positions. */
1527 extern const struct rank TOO_FEW_PARAMS_BADNESS
;
1528 /* Badness if no conversion among types. */
1529 extern const struct rank INCOMPATIBLE_TYPE_BADNESS
;
1531 /* Badness of an exact match. */
1532 extern const struct rank EXACT_MATCH_BADNESS
;
1534 /* Badness of integral promotion. */
1535 extern const struct rank INTEGER_PROMOTION_BADNESS
;
1536 /* Badness of floating promotion. */
1537 extern const struct rank FLOAT_PROMOTION_BADNESS
;
1538 /* Badness of converting a derived class pointer
1539 to a base class pointer. */
1540 extern const struct rank BASE_PTR_CONVERSION_BADNESS
;
1541 /* Badness of integral conversion. */
1542 extern const struct rank INTEGER_CONVERSION_BADNESS
;
1543 /* Badness of floating conversion. */
1544 extern const struct rank FLOAT_CONVERSION_BADNESS
;
1545 /* Badness of integer<->floating conversions. */
1546 extern const struct rank INT_FLOAT_CONVERSION_BADNESS
;
1547 /* Badness of conversion of pointer to void pointer. */
1548 extern const struct rank VOID_PTR_CONVERSION_BADNESS
;
1549 /* Badness of conversion of pointer to boolean. */
1550 extern const struct rank BOOL_PTR_CONVERSION_BADNESS
;
1551 /* Badness of converting derived to base class. */
1552 extern const struct rank BASE_CONVERSION_BADNESS
;
1553 /* Badness of converting from non-reference to reference. */
1554 extern const struct rank REFERENCE_CONVERSION_BADNESS
;
1555 /* Badness of converting integer 0 to NULL pointer. */
1556 extern const struct rank NULL_POINTER_CONVERSION
;
1558 /* Non-standard conversions allowed by the debugger */
1559 /* Converting a pointer to an int is usually OK. */
1560 extern const struct rank NS_POINTER_CONVERSION_BADNESS
;
1563 extern struct rank
sum_ranks (struct rank a
, struct rank b
);
1564 extern int compare_ranks (struct rank a
, struct rank b
);
1566 extern int compare_badness (struct badness_vector
*, struct badness_vector
*);
1568 extern struct badness_vector
*rank_function (struct type
**, int,
1569 struct value
**, int);
1571 extern struct rank
rank_one_type (struct type
*, struct type
*,
1574 extern void recursive_dump_type (struct type
*, int);
1576 extern int field_is_static (struct field
*);
1580 extern void print_scalar_formatted (const void *, struct type
*,
1581 const struct value_print_options
*,
1582 int, struct ui_file
*);
1584 extern int can_dereference (struct type
*);
1586 extern int is_integral_type (struct type
*);
1588 extern int is_scalar_type_recursive (struct type
*);
1590 extern void maintenance_print_type (char *, int);
1592 extern htab_t
create_copied_types_hash (struct objfile
*objfile
);
1594 extern struct type
*copy_type_recursive (struct objfile
*objfile
,
1596 htab_t copied_types
);
1598 extern struct type
*copy_type (const struct type
*type
);
1600 #endif /* GDBTYPES_H */