1 /* Internal type definitions for GDB.
3 Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
4 2002, 2003, 2004, 2006, 2007, 2008, 2009, 2010, 2011
5 Free Software Foundation, Inc.
7 Contributed by Cygnus Support, using pieces from other GDB modules.
9 This file is part of GDB.
11 This program is free software; you can redistribute it and/or modify
12 it under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 3 of the License, or
14 (at your option) any later version.
16 This program is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 GNU General Public License for more details.
21 You should have received a copy of the GNU General Public License
22 along with this program. If not, see <http://www.gnu.org/licenses/>. */
24 #if !defined (GDBTYPES_H)
29 /* Forward declarations for prototypes. */
32 struct value_print_options;
35 /* Some macros for char-based bitfields. */
37 #define B_SET(a,x) ((a)[(x)>>3] |= (1 << ((x)&7)))
38 #define B_CLR(a,x) ((a)[(x)>>3] &= ~(1 << ((x)&7)))
39 #define B_TST(a,x) ((a)[(x)>>3] & (1 << ((x)&7)))
40 #define B_TYPE unsigned char
41 #define B_BYTES(x) ( 1 + ((x)>>3) )
42 #define B_CLRALL(a,x) memset ((a), 0, B_BYTES(x))
44 /* Different kinds of data types are distinguished by the `code' field. */
48 TYPE_CODE_UNDEF, /* Not used; catches errors */
49 TYPE_CODE_PTR, /* Pointer type */
51 /* Array type with lower & upper bounds.
53 Regardless of the language, GDB represents multidimensional
54 array types the way C does: as arrays of arrays. So an
55 instance of a GDB array type T can always be seen as a series
56 of instances of TYPE_TARGET_TYPE (T) laid out sequentially in
59 Row-major languages like C lay out multi-dimensional arrays so
60 that incrementing the rightmost index in a subscripting
61 expression results in the smallest change in the address of the
62 element referred to. Column-major languages like Fortran lay
63 them out so that incrementing the leftmost index results in the
66 This means that, in column-major languages, working our way
67 from type to target type corresponds to working through indices
68 from right to left, not left to right. */
71 TYPE_CODE_STRUCT, /* C struct or Pascal record */
72 TYPE_CODE_UNION, /* C union or Pascal variant part */
73 TYPE_CODE_ENUM, /* Enumeration type */
74 TYPE_CODE_FLAGS, /* Bit flags type */
75 TYPE_CODE_FUNC, /* Function type */
76 TYPE_CODE_INT, /* Integer type */
78 /* Floating type. This is *NOT* a complex type. Beware, there are parts
79 of GDB which bogusly assume that TYPE_CODE_FLT can mean complex. */
82 /* Void type. The length field specifies the length (probably always
83 one) which is used in pointer arithmetic involving pointers to
84 this type, but actually dereferencing such a pointer is invalid;
85 a void type has no length and no actual representation in memory
86 or registers. A pointer to a void type is a generic pointer. */
89 TYPE_CODE_SET, /* Pascal sets */
90 TYPE_CODE_RANGE, /* Range (integers within spec'd bounds). */
92 /* A string type which is like an array of character but prints
93 differently (at least for (the deleted) CHILL). It does not
94 contain a length field as Pascal strings (for many Pascals,
95 anyway) do; if we want to deal with such strings, we should use
99 /* String of bits; like TYPE_CODE_SET but prints differently (at
100 least for (the deleted) CHILL). */
103 /* Unknown type. The length field is valid if we were able to
104 deduce that much about the type, or 0 if we don't even know that. */
108 TYPE_CODE_METHOD, /* Method type */
110 /* Pointer-to-member-function type. This describes how to access a
111 particular member function of a class (possibly a virtual
112 member function). The representation may vary between different
116 /* Pointer-to-member type. This is the offset within a class to some
117 particular data member. The only currently supported representation
118 uses an unbiased offset, with -1 representing NULL; this is used
119 by the Itanium C++ ABI (used by GCC on all platforms). */
122 TYPE_CODE_REF, /* C++ Reference types */
124 TYPE_CODE_CHAR, /* *real* character type */
126 /* Boolean type. 0 is false, 1 is true, and other values are non-boolean
127 (e.g. FORTRAN "logical" used as unsigned int). */
131 TYPE_CODE_COMPLEX, /* Complex float */
135 TYPE_CODE_NAMESPACE, /* C++ namespace. */
137 TYPE_CODE_DECFLOAT, /* Decimal floating point. */
139 TYPE_CODE_MODULE, /* Fortran module. */
141 /* Internal function type. */
142 TYPE_CODE_INTERNAL_FUNCTION
145 /* For now allow source to use TYPE_CODE_CLASS for C++ classes, as an
146 alias for TYPE_CODE_STRUCT. This is for DWARF, which has a distinct
147 "class" attribute. Perhaps we should actually have a separate TYPE_CODE
148 so that we can print "class" or "struct" depending on what the debug
149 info said. It's not clear we should bother. */
151 #define TYPE_CODE_CLASS TYPE_CODE_STRUCT
153 /* Some constants representing each bit field in the main_type. See
154 the bit-field-specific macros, below, for documentation of each
155 constant in this enum. These enum values are only used with
156 init_type. Note that the values are chosen not to conflict with
157 type_instance_flag_value; this lets init_type error-check its
162 TYPE_FLAG_UNSIGNED = (1 << 7),
163 TYPE_FLAG_NOSIGN = (1 << 8),
164 TYPE_FLAG_STUB = (1 << 9),
165 TYPE_FLAG_TARGET_STUB = (1 << 10),
166 TYPE_FLAG_STATIC = (1 << 11),
167 TYPE_FLAG_PROTOTYPED = (1 << 12),
168 TYPE_FLAG_INCOMPLETE = (1 << 13),
169 TYPE_FLAG_VARARGS = (1 << 14),
170 TYPE_FLAG_VECTOR = (1 << 15),
171 TYPE_FLAG_FIXED_INSTANCE = (1 << 16),
172 TYPE_FLAG_STUB_SUPPORTED = (1 << 17),
173 TYPE_FLAG_GNU_IFUNC = (1 << 18),
175 /* Used for error-checking. */
176 TYPE_FLAG_MIN = TYPE_FLAG_UNSIGNED
179 /* Some bits for the type's instance_flags word. See the macros below
180 for documentation on each bit. Note that if you add a value here,
181 you must update the enum type_flag_value as well. */
182 enum type_instance_flag_value
184 TYPE_INSTANCE_FLAG_CONST = (1 << 0),
185 TYPE_INSTANCE_FLAG_VOLATILE = (1 << 1),
186 TYPE_INSTANCE_FLAG_CODE_SPACE = (1 << 2),
187 TYPE_INSTANCE_FLAG_DATA_SPACE = (1 << 3),
188 TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1 = (1 << 4),
189 TYPE_INSTANCE_FLAG_ADDRESS_CLASS_2 = (1 << 5),
190 TYPE_INSTANCE_FLAG_NOTTEXT = (1 << 6),
193 /* Unsigned integer type. If this is not set for a TYPE_CODE_INT, the
194 type is signed (unless TYPE_FLAG_NOSIGN (below) is set). */
196 #define TYPE_UNSIGNED(t) (TYPE_MAIN_TYPE (t)->flag_unsigned)
198 /* No sign for this type. In C++, "char", "signed char", and "unsigned
199 char" are distinct types; so we need an extra flag to indicate the
200 absence of a sign! */
202 #define TYPE_NOSIGN(t) (TYPE_MAIN_TYPE (t)->flag_nosign)
204 /* This appears in a type's flags word if it is a stub type (e.g., if
205 someone referenced a type that wasn't defined in a source file
206 via (struct sir_not_appearing_in_this_film *)). */
208 #define TYPE_STUB(t) (TYPE_MAIN_TYPE (t)->flag_stub)
210 /* The target type of this type is a stub type, and this type needs to
211 be updated if it gets un-stubbed in check_typedef.
212 Used for arrays and ranges, in which TYPE_LENGTH of the array/range
213 gets set based on the TYPE_LENGTH of the target type.
214 Also, set for TYPE_CODE_TYPEDEF. */
216 #define TYPE_TARGET_STUB(t) (TYPE_MAIN_TYPE (t)->flag_target_stub)
218 /* Static type. If this is set, the corresponding type had
220 Note: This may be unnecessary, since static data members
221 are indicated by other means (bitpos == -1). */
223 #define TYPE_STATIC(t) (TYPE_MAIN_TYPE (t)->flag_static)
225 /* This is a function type which appears to have a prototype. We need
226 this for function calls in order to tell us if it's necessary to
227 coerce the args, or to just do the standard conversions. This is
228 used with a short field. */
230 #define TYPE_PROTOTYPED(t) (TYPE_MAIN_TYPE (t)->flag_prototyped)
232 /* This flag is used to indicate that processing for this type
235 (Mostly intended for HP platforms, where class methods, for
236 instance, can be encountered before their classes in the debug
237 info; the incomplete type has to be marked so that the class and
238 the method can be assigned correct types.) */
240 #define TYPE_INCOMPLETE(t) (TYPE_MAIN_TYPE (t)->flag_incomplete)
242 /* FIXME drow/2002-06-03: Only used for methods, but applies as well
245 #define TYPE_VARARGS(t) (TYPE_MAIN_TYPE (t)->flag_varargs)
247 /* Identify a vector type. Gcc is handling this by adding an extra
248 attribute to the array type. We slurp that in as a new flag of a
249 type. This is used only in dwarf2read.c. */
250 #define TYPE_VECTOR(t) (TYPE_MAIN_TYPE (t)->flag_vector)
252 /* The debugging formats (especially STABS) do not contain enough information
253 to represent all Ada types---especially those whose size depends on
254 dynamic quantities. Therefore, the GNAT Ada compiler includes
255 extra information in the form of additional type definitions
256 connected by naming conventions. This flag indicates that the
257 type is an ordinary (unencoded) GDB type that has been created from
258 the necessary run-time information, and does not need further
259 interpretation. Optionally marks ordinary, fixed-size GDB type. */
261 #define TYPE_FIXED_INSTANCE(t) (TYPE_MAIN_TYPE (t)->flag_fixed_instance)
263 /* This debug target supports TYPE_STUB(t). In the unsupported case we have to
264 rely on NFIELDS to be zero etc., see TYPE_IS_OPAQUE ().
265 TYPE_STUB(t) with !TYPE_STUB_SUPPORTED(t) may exist if we only guessed
266 the TYPE_STUB(t) value (see dwarfread.c). */
268 #define TYPE_STUB_SUPPORTED(t) (TYPE_MAIN_TYPE (t)->flag_stub_supported)
270 /* Not textual. By default, GDB treats all single byte integers as
271 characters (or elements of strings) unless this flag is set. */
273 #define TYPE_NOTTEXT(t) (TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_NOTTEXT)
275 /* Used only for TYPE_CODE_FUNC where it specifies the real function
276 address is returned by this function call. TYPE_TARGET_TYPE determines the
277 final returned function type to be presented to user. */
279 #define TYPE_GNU_IFUNC(t) (TYPE_MAIN_TYPE (t)->flag_gnu_ifunc)
281 /* Type owner. If TYPE_OBJFILE_OWNED is true, the type is owned by
282 the objfile retrieved as TYPE_OBJFILE. Otherweise, the type is
283 owned by an architecture; TYPE_OBJFILE is NULL in this case. */
285 #define TYPE_OBJFILE_OWNED(t) (TYPE_MAIN_TYPE (t)->flag_objfile_owned)
286 #define TYPE_OWNER(t) TYPE_MAIN_TYPE(t)->owner
287 #define TYPE_OBJFILE(t) (TYPE_OBJFILE_OWNED(t)? TYPE_OWNER(t).objfile : NULL)
289 /* True if this type was declared using the "class" keyword. This is
290 only valid for C++ structure types, and only used for displaying
291 the type. If false, the structure was declared as a "struct". */
293 #define TYPE_DECLARED_CLASS(t) (TYPE_MAIN_TYPE (t)->flag_declared_class)
295 /* Constant type. If this is set, the corresponding type has a
298 #define TYPE_CONST(t) (TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_CONST)
300 /* Volatile type. If this is set, the corresponding type has a
301 volatile modifier. */
303 #define TYPE_VOLATILE(t) \
304 (TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_VOLATILE)
306 /* Instruction-space delimited type. This is for Harvard architectures
307 which have separate instruction and data address spaces (and perhaps
310 GDB usually defines a flat address space that is a superset of the
311 architecture's two (or more) address spaces, but this is an extension
312 of the architecture's model.
314 If TYPE_FLAG_INST is set, an object of the corresponding type
315 resides in instruction memory, even if its address (in the extended
316 flat address space) does not reflect this.
318 Similarly, if TYPE_FLAG_DATA is set, then an object of the
319 corresponding type resides in the data memory space, even if
320 this is not indicated by its (flat address space) address.
322 If neither flag is set, the default space for functions / methods
323 is instruction space, and for data objects is data memory. */
325 #define TYPE_CODE_SPACE(t) \
326 (TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_CODE_SPACE)
328 #define TYPE_DATA_SPACE(t) \
329 (TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_DATA_SPACE)
331 /* Address class flags. Some environments provide for pointers whose
332 size is different from that of a normal pointer or address types
333 where the bits are interpreted differently than normal addresses. The
334 TYPE_FLAG_ADDRESS_CLASS_n flags may be used in target specific
335 ways to represent these different types of address classes. */
336 #define TYPE_ADDRESS_CLASS_1(t) (TYPE_INSTANCE_FLAGS(t) \
337 & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1)
338 #define TYPE_ADDRESS_CLASS_2(t) (TYPE_INSTANCE_FLAGS(t) \
339 & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_2)
340 #define TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL \
341 (TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1 | TYPE_INSTANCE_FLAG_ADDRESS_CLASS_2)
342 #define TYPE_ADDRESS_CLASS_ALL(t) (TYPE_INSTANCE_FLAGS(t) \
343 & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL)
345 /* Determine which field of the union main_type.fields[x].loc is used. */
349 FIELD_LOC_KIND_BITPOS, /* bitpos */
350 FIELD_LOC_KIND_PHYSADDR, /* physaddr */
351 FIELD_LOC_KIND_PHYSNAME, /* physname */
352 FIELD_LOC_KIND_DWARF_BLOCK /* dwarf_block */
355 /* A discriminant to determine which field in the main_type.type_specific
356 union is being used, if any.
358 For types such as TYPE_CODE_FLT or TYPE_CODE_FUNC, the use of this
359 discriminant is really redundant, as we know from the type code
360 which field is going to be used. As such, it would be possible to
361 reduce the size of this enum in order to save a bit or two for
362 other fields of struct main_type. But, since we still have extra
363 room , and for the sake of clarity and consistency, we treat all fields
364 of the union the same way. */
366 enum type_specific_kind
369 TYPE_SPECIFIC_CPLUS_STUFF,
370 TYPE_SPECIFIC_GNAT_STUFF,
371 TYPE_SPECIFIC_FLOATFORMAT,
375 /* This structure is space-critical.
376 Its layout has been tweaked to reduce the space used. */
380 /* Code for kind of type. */
382 ENUM_BITFIELD(type_code) code : 8;
384 /* Flags about this type. These fields appear at this location
385 because they packs nicely here. See the TYPE_* macros for
386 documentation about these fields. */
388 unsigned int flag_unsigned : 1;
389 unsigned int flag_nosign : 1;
390 unsigned int flag_stub : 1;
391 unsigned int flag_target_stub : 1;
392 unsigned int flag_static : 1;
393 unsigned int flag_prototyped : 1;
394 unsigned int flag_incomplete : 1;
395 unsigned int flag_varargs : 1;
396 unsigned int flag_vector : 1;
397 unsigned int flag_stub_supported : 1;
398 unsigned int flag_gnu_ifunc : 1;
399 unsigned int flag_fixed_instance : 1;
400 unsigned int flag_objfile_owned : 1;
401 /* True if this type was declared with "class" rather than
403 unsigned int flag_declared_class : 1;
405 /* A discriminant telling us which field of the type_specific union
406 is being used for this type, if any. */
407 ENUM_BITFIELD(type_specific_kind) type_specific_field : 3;
409 /* Number of fields described for this type. This field appears at
410 this location because it packs nicely here. */
414 /* Field number of the virtual function table pointer in
415 VPTR_BASETYPE. If -1, we were unable to find the virtual
416 function table pointer in initial symbol reading, and
417 get_vptr_fieldno should be called to find it if possible.
418 get_vptr_fieldno will update this field if possible.
419 Otherwise the value is left at -1.
421 Unused if this type does not have virtual functions.
423 This field appears at this location because it packs nicely here. */
427 /* Name of this type, or NULL if none.
429 This is used for printing only, except by poorly designed C++ code.
430 For looking up a name, look for a symbol in the VAR_DOMAIN. */
434 /* Tag name for this type, or NULL if none. This means that the
435 name of the type consists of a keyword followed by the tag name.
436 Which keyword is determined by the type code ("struct" for
437 TYPE_CODE_STRUCT, etc.). As far as I know C/C++ are the only languages
440 This is used for printing only, except by poorly designed C++ code.
441 For looking up a name, look for a symbol in the STRUCT_DOMAIN.
442 One more legitimate use is that if TYPE_FLAG_STUB is set, this is
443 the name to use to look for definitions in other files. */
447 /* Every type is now associated with a particular objfile, and the
448 type is allocated on the objfile_obstack for that objfile. One problem
449 however, is that there are times when gdb allocates new types while
450 it is not in the process of reading symbols from a particular objfile.
451 Fortunately, these happen when the type being created is a derived
452 type of an existing type, such as in lookup_pointer_type(). So
453 we can just allocate the new type using the same objfile as the
454 existing type, but to do this we need a backpointer to the objfile
455 from the existing type. Yes this is somewhat ugly, but without
456 major overhaul of the internal type system, it can't be avoided
461 struct objfile *objfile;
462 struct gdbarch *gdbarch;
465 /* For a pointer type, describes the type of object pointed to.
466 For an array type, describes the type of the elements.
467 For a function or method type, describes the type of the return value.
468 For a range type, describes the type of the full range.
469 For a complex type, describes the type of each coordinate.
470 For a special record or union type encoding a dynamic-sized type
471 in GNAT, a memoized pointer to a corresponding static version of
475 struct type *target_type;
477 /* For structure and union types, a description of each field.
478 For set and pascal array types, there is one "field",
479 whose type is the domain type of the set or array.
480 For range types, there are two "fields",
481 the minimum and maximum values (both inclusive).
482 For enum types, each possible value is described by one "field".
483 For a function or method type, a "field" for each parameter.
484 For C++ classes, there is one field for each base class (if it is
485 a derived class) plus one field for each class data member. Member
486 functions are recorded elsewhere.
488 Using a pointer to a separate array of fields
489 allows all types to have the same size, which is useful
490 because we can allocate the space for a type before
491 we know what to put in it. */
499 /* Position of this field, counting in bits from start of
500 containing structure. For gdbarch_bits_big_endian=1
501 targets, it is the bit offset to the MSB. For
502 gdbarch_bits_big_endian=0 targets, it is the bit offset to
503 the LSB. For a range bound or enum value, this is the
508 /* For a static field, if TYPE_FIELD_STATIC_HAS_ADDR then physaddr
509 is the location (in the target) of the static field.
510 Otherwise, physname is the mangled label of the static field. */
513 const char *physname;
515 /* The field location can be computed by evaluating the following DWARF
516 block. Its DATA is allocated on objfile_obstack - no CU load is
517 needed to access it. */
519 struct dwarf2_locexpr_baton *dwarf_block;
523 /* For a function or member type, this is 1 if the argument is marked
524 artificial. Artificial arguments should not be shown to the
525 user. For TYPE_CODE_RANGE it is set if the specific bound is not
527 unsigned int artificial : 1;
529 /* Discriminant for union field_location. */
530 ENUM_BITFIELD(field_loc_kind) loc_kind : 2;
532 /* Size of this field, in bits, or zero if not packed.
533 If non-zero in an array type, indicates the element size in
534 bits (used only in Ada at the moment).
535 For an unpacked field, the field's type's length
536 says how many bytes the field occupies. */
538 unsigned int bitsize : 29;
540 /* In a struct or union type, type of this field.
541 In a function or member type, type of this argument.
542 In an array type, the domain-type of the array. */
546 /* Name of field, value or argument.
547 NULL for range bounds, array domains, and member function
553 /* Union member used for range types. */
557 /* Low bound of range. */
561 /* High bound of range. */
565 /* Flags indicating whether the values of low and high are
566 valid. When true, the respective range value is
567 undefined. Currently used only for FORTRAN arrays. */
576 /* For types with virtual functions (TYPE_CODE_STRUCT), VPTR_BASETYPE
577 is the base class which defined the virtual function table pointer.
579 For types that are pointer to member types (TYPE_CODE_METHODPTR,
580 TYPE_CODE_MEMBERPTR), VPTR_BASETYPE is the type that this pointer
583 For method types (TYPE_CODE_METHOD), VPTR_BASETYPE is the aggregate
584 type that contains the method.
588 struct type *vptr_basetype;
590 /* Slot to point to additional language-specific fields of this type. */
594 /* CPLUS_STUFF is for TYPE_CODE_STRUCT. It is initialized to point to
595 cplus_struct_default, a default static instance of a struct
596 cplus_struct_type. */
598 struct cplus_struct_type *cplus_stuff;
600 /* GNAT_STUFF is for types for which the GNAT Ada compiler
601 provides additional information. */
602 struct gnat_aux_type *gnat_stuff;
604 /* FLOATFORMAT is for TYPE_CODE_FLT. It is a pointer to two
605 floatformat objects that describe the floating-point value
606 that resides within the type. The first is for big endian
607 targets and the second is for little endian targets. */
609 const struct floatformat **floatformat;
611 /* For TYPE_CODE_FUNC types, */
612 struct func_type *func_stuff;
616 /* A ``struct type'' describes a particular instance of a type, with
617 some particular qualification. */
620 /* Type that is a pointer to this type.
621 NULL if no such pointer-to type is known yet.
622 The debugger may add the address of such a type
623 if it has to construct one later. */
625 struct type *pointer_type;
627 /* C++: also need a reference type. */
629 struct type *reference_type;
631 /* Variant chain. This points to a type that differs from this one only
632 in qualifiers and length. Currently, the possible qualifiers are
633 const, volatile, code-space, data-space, and address class. The
634 length may differ only when one of the address class flags are set.
635 The variants are linked in a circular ring and share MAIN_TYPE. */
638 /* Flags specific to this instance of the type, indicating where
641 For TYPE_CODE_TYPEDEF the flags of the typedef type should be binary
642 or-ed with the target type, with a special case for address class and
643 space class. For example if this typedef does not specify any new
644 qualifiers, TYPE_INSTANCE_FLAGS is 0 and the instance flags are
645 completely inherited from the target type. No qualifiers can be cleared
646 by the typedef. See also check_typedef. */
649 /* Length of storage for a value of this type. This is what
650 sizeof(type) would return; use it for address arithmetic,
651 memory reads and writes, etc. This size includes padding. For
652 example, an i386 extended-precision floating point value really
653 only occupies ten bytes, but most ABI's declare its size to be
654 12 bytes, to preserve alignment. A `struct type' representing
655 such a floating-point type would have a `length' value of 12,
656 even though the last two bytes are unused.
658 There's a bit of a host/target mess here, if you're concerned
659 about machines whose bytes aren't eight bits long, or who don't
660 have byte-addressed memory. Various places pass this to memcpy
661 and such, meaning it must be in units of host bytes. Various
662 other places expect they can calculate addresses by adding it
663 and such, meaning it must be in units of target bytes. For
664 some DSP targets, in which HOST_CHAR_BIT will (presumably) be 8
665 and TARGET_CHAR_BIT will be (say) 32, this is a problem.
667 One fix would be to make this field in bits (requiring that it
668 always be a multiple of HOST_CHAR_BIT and TARGET_CHAR_BIT) ---
669 the other choice would be to make it consistently in units of
670 HOST_CHAR_BIT. However, this would still fail to address
671 machines based on a ternary or decimal representation. */
675 /* Core type, shared by a group of qualified types. */
676 struct main_type *main_type;
679 #define NULL_TYPE ((struct type *) 0)
681 /* C++ language-specific information for TYPE_CODE_STRUCT and TYPE_CODE_UNION
684 struct cplus_struct_type
686 /* Number of base classes this type derives from. The baseclasses are
687 stored in the first N_BASECLASSES fields (i.e. the `fields' field of
688 the struct type). I think only the `type' field of such a field has
693 /* Number of methods with unique names. All overloaded methods with
694 the same name count only once. */
698 /* Number of methods described for this type, not including the
699 methods that it derives from. */
701 short nfn_fields_total;
703 /* Number of template arguments. */
704 unsigned short n_template_arguments;
706 /* One if this struct is a dynamic class, as defined by the
707 Itanium C++ ABI: if it requires a virtual table pointer,
708 because it or any of its base classes have one or more virtual
709 member functions or virtual base classes. Minus one if not
710 dynamic. Zero if not yet computed. */
713 /* Non-zero if this type came from a Java CU. */
714 unsigned int is_java : 1;
716 /* For derived classes, the number of base classes is given by
717 n_baseclasses and virtual_field_bits is a bit vector containing
718 one bit per base class. If the base class is virtual, the
719 corresponding bit will be set.
724 class C : public B, public virtual A {};
726 B is a baseclass of C; A is a virtual baseclass for C.
727 This is a C++ 2.0 language feature. */
729 B_TYPE *virtual_field_bits;
731 /* For classes with private fields, the number of fields is given by
732 nfields and private_field_bits is a bit vector containing one bit
734 If the field is private, the corresponding bit will be set. */
736 B_TYPE *private_field_bits;
738 /* For classes with protected fields, the number of fields is given by
739 nfields and protected_field_bits is a bit vector containing one bit
741 If the field is private, the corresponding bit will be set. */
743 B_TYPE *protected_field_bits;
745 /* For classes with fields to be ignored, either this is optimized out
746 or this field has length 0. */
748 B_TYPE *ignore_field_bits;
750 /* For classes, structures, and unions, a description of each field,
751 which consists of an overloaded name, followed by the types of
752 arguments that the method expects, and then the name after it
753 has been renamed to make it distinct.
755 fn_fieldlists points to an array of nfn_fields of these. */
760 /* The overloaded name. */
764 /* The number of methods with this name. */
768 /* The list of methods. */
773 /* If is_stub is clear, this is the mangled name which we can
774 look up to find the address of the method (FIXME: it would
775 be cleaner to have a pointer to the struct symbol here
778 /* If is_stub is set, this is the portion of the mangled
779 name which specifies the arguments. For example, "ii",
780 if there are two int arguments, or "" if there are no
781 arguments. See gdb_mangle_name for the conversion from this
782 format to the one used if is_stub is clear. */
784 const char *physname;
786 /* The function type for the method.
787 (This comment used to say "The return value of the method",
788 but that's wrong. The function type
789 is expected here, i.e. something with TYPE_CODE_FUNC,
790 and *not* the return-value type). */
794 /* For virtual functions.
795 First baseclass that defines this virtual function. */
797 struct type *fcontext;
801 unsigned int is_const:1;
802 unsigned int is_volatile:1;
803 unsigned int is_private:1;
804 unsigned int is_protected:1;
805 unsigned int is_public:1;
806 unsigned int is_abstract:1;
807 unsigned int is_static:1;
808 unsigned int is_final:1;
809 unsigned int is_synchronized:1;
810 unsigned int is_native:1;
811 unsigned int is_artificial:1;
813 /* A stub method only has some fields valid (but they are enough
814 to reconstruct the rest of the fields). */
815 unsigned int is_stub:1;
818 unsigned int dummy:4;
820 /* Index into that baseclass's virtual function table,
821 minus 2; else if static: VOFFSET_STATIC; else: 0. */
823 unsigned int voffset:16;
825 #define VOFFSET_STATIC 1
833 /* Pointer to information about enclosing scope, if this is a
834 local type. If it is not a local type, this is NULL. */
835 struct local_type_info
842 /* typedefs defined inside this class. TYPEDEF_FIELD points to an array of
843 TYPEDEF_FIELD_COUNT elements. */
846 /* Unqualified name to be prefixed by owning class qualified name. */
849 /* Type this typedef named NAME represents. */
853 unsigned typedef_field_count;
855 /* The template arguments. This is an array with
856 N_TEMPLATE_ARGUMENTS elements. This is NULL for non-template
858 struct symbol **template_arguments;
861 /* Struct used in computing virtual base list. */
864 struct type *vbasetype; /* pointer to virtual base */
865 struct vbase *next; /* next in chain */
868 /* Struct used to store conversion rankings. */
873 /* When two conversions are of the same type and therefore have the same
874 rank, subrank is used to differentiate the two.
875 Eg: Two derived-class-pointer to base-class-pointer conversions would
876 both have base pointer conversion rank, but the conversion with the
877 shorter distance to the ancestor is preferable. 'subrank' would be used
882 /* Struct used for ranking a function for overload resolution. */
883 struct badness_vector
889 /* GNAT Ada-specific information for various Ada types. */
892 /* Parallel type used to encode information about dynamic types
893 used in Ada (such as variant records, variable-size array,
895 struct type* descriptive_type;
898 /* For TYPE_CODE_FUNC types, */
901 /* The calling convention for targets supporting multiple ABIs. Right now
902 this is only fetched from the Dwarf-2 DW_AT_calling_convention
904 unsigned calling_convention;
906 /* Only those DW_TAG_GNU_call_site's in this function that have
907 DW_AT_GNU_tail_call set are linked in this list. Function without its
908 tail call list complete (DW_AT_GNU_all_tail_call_sites or its superset
909 DW_AT_GNU_all_call_sites) has TAIL_CALL_LIST NULL, even if some
910 DW_TAG_GNU_call_site's exist in such function. */
911 struct call_site *tail_call_list;
914 /* A place where a function gets called from, represented by
915 DW_TAG_GNU_call_site. It can be looked up from symtab->call_site_htab. */
919 /* Address of the first instruction after this call. It must be the first
920 field as we overload core_addr_hash and core_addr_eq for it. */
923 /* List successor with head in FUNC_TYPE.TAIL_CALL_LIST. */
924 struct call_site *tail_call_next;
926 /* Describe DW_AT_GNU_call_site_target. Missing attribute uses
927 FIELD_LOC_KIND_DWARF_BLOCK with FIELD_DWARF_BLOCK == NULL. */
930 union field_location loc;
932 /* Discriminant for union field_location. */
933 ENUM_BITFIELD(field_loc_kind) loc_kind : 2;
937 /* Size of the PARAMETER array. */
938 unsigned parameter_count;
940 /* CU of the function where the call is located. It gets used for DWARF
941 blocks execution in the parameter array below. */
942 struct dwarf2_per_cu_data *per_cu;
944 /* Describe DW_TAG_GNU_call_site's DW_TAG_formal_parameter. */
945 struct call_site_parameter
947 /* DW_TAG_formal_parameter's DW_AT_location's DW_OP_regX as DWARF
948 register number, for register passed parameters. If -1 then use
952 /* Offset from the callee's frame base, for stack passed parameters.
953 This equals offset from the caller's stack pointer. Valid only if
954 DWARF_REGNUM is -1. */
957 /* DW_TAG_formal_parameter's DW_AT_GNU_call_site_value. It is never
959 const gdb_byte *value;
962 /* DW_TAG_formal_parameter's DW_AT_GNU_call_site_data_value. It may be
963 NULL if not provided by DWARF. */
964 const gdb_byte *data_value;
965 size_t data_value_size;
970 /* The default value of TYPE_CPLUS_SPECIFIC(T) points to the
971 this shared static structure. */
973 extern const struct cplus_struct_type cplus_struct_default;
975 extern void allocate_cplus_struct_type (struct type *);
977 #define INIT_CPLUS_SPECIFIC(type) \
978 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_CPLUS_STUFF, \
979 TYPE_RAW_CPLUS_SPECIFIC (type) = (struct cplus_struct_type*) \
980 &cplus_struct_default)
982 #define ALLOCATE_CPLUS_STRUCT_TYPE(type) allocate_cplus_struct_type (type)
984 #define HAVE_CPLUS_STRUCT(type) \
985 (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_CPLUS_STUFF \
986 && TYPE_RAW_CPLUS_SPECIFIC (type) != &cplus_struct_default)
988 extern const struct gnat_aux_type gnat_aux_default;
990 extern void allocate_gnat_aux_type (struct type *);
992 #define INIT_GNAT_SPECIFIC(type) \
993 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_GNAT_STUFF, \
994 TYPE_GNAT_SPECIFIC (type) = (struct gnat_aux_type *) &gnat_aux_default)
995 #define ALLOCATE_GNAT_AUX_TYPE(type) allocate_gnat_aux_type (type)
996 /* A macro that returns non-zero if the type-specific data should be
997 read as "gnat-stuff". */
998 #define HAVE_GNAT_AUX_INFO(type) \
999 (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_GNAT_STUFF)
1001 #define INIT_FUNC_SPECIFIC(type) \
1002 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_FUNC, \
1003 TYPE_MAIN_TYPE (type)->type_specific.func_stuff \
1004 = TYPE_ZALLOC (type, \
1005 sizeof (*TYPE_MAIN_TYPE (type)->type_specific.func_stuff)))
1007 #define TYPE_INSTANCE_FLAGS(thistype) (thistype)->instance_flags
1008 #define TYPE_MAIN_TYPE(thistype) (thistype)->main_type
1009 #define TYPE_NAME(thistype) TYPE_MAIN_TYPE(thistype)->name
1010 #define TYPE_TAG_NAME(type) TYPE_MAIN_TYPE(type)->tag_name
1011 #define TYPE_TARGET_TYPE(thistype) TYPE_MAIN_TYPE(thistype)->target_type
1012 #define TYPE_POINTER_TYPE(thistype) (thistype)->pointer_type
1013 #define TYPE_REFERENCE_TYPE(thistype) (thistype)->reference_type
1014 #define TYPE_CHAIN(thistype) (thistype)->chain
1015 /* Note that if thistype is a TYPEDEF type, you have to call check_typedef.
1016 But check_typedef does set the TYPE_LENGTH of the TYPEDEF type,
1017 so you only have to call check_typedef once. Since allocate_value
1018 calls check_typedef, TYPE_LENGTH (VALUE_TYPE (X)) is safe. */
1019 #define TYPE_LENGTH(thistype) (thistype)->length
1020 /* Note that TYPE_CODE can be TYPE_CODE_TYPEDEF, so if you want the real
1021 type, you need to do TYPE_CODE (check_type (this_type)). */
1022 #define TYPE_CODE(thistype) TYPE_MAIN_TYPE(thistype)->code
1023 #define TYPE_NFIELDS(thistype) TYPE_MAIN_TYPE(thistype)->nfields
1024 #define TYPE_FIELDS(thistype) TYPE_MAIN_TYPE(thistype)->flds_bnds.fields
1026 #define TYPE_INDEX_TYPE(type) TYPE_FIELD_TYPE (type, 0)
1027 #define TYPE_RANGE_DATA(thistype) TYPE_MAIN_TYPE(thistype)->flds_bnds.bounds
1028 #define TYPE_LOW_BOUND(range_type) TYPE_RANGE_DATA(range_type)->low
1029 #define TYPE_HIGH_BOUND(range_type) TYPE_RANGE_DATA(range_type)->high
1030 #define TYPE_LOW_BOUND_UNDEFINED(range_type) \
1031 TYPE_RANGE_DATA(range_type)->low_undefined
1032 #define TYPE_HIGH_BOUND_UNDEFINED(range_type) \
1033 TYPE_RANGE_DATA(range_type)->high_undefined
1035 /* Moto-specific stuff for FORTRAN arrays. */
1037 #define TYPE_ARRAY_UPPER_BOUND_IS_UNDEFINED(arraytype) \
1038 TYPE_HIGH_BOUND_UNDEFINED(TYPE_INDEX_TYPE(arraytype))
1039 #define TYPE_ARRAY_LOWER_BOUND_IS_UNDEFINED(arraytype) \
1040 TYPE_LOW_BOUND_UNDEFINED(TYPE_INDEX_TYPE(arraytype))
1042 #define TYPE_ARRAY_UPPER_BOUND_VALUE(arraytype) \
1043 (TYPE_HIGH_BOUND(TYPE_INDEX_TYPE((arraytype))))
1045 #define TYPE_ARRAY_LOWER_BOUND_VALUE(arraytype) \
1046 (TYPE_LOW_BOUND(TYPE_INDEX_TYPE((arraytype))))
1050 #define TYPE_VPTR_BASETYPE(thistype) TYPE_MAIN_TYPE(thistype)->vptr_basetype
1051 #define TYPE_DOMAIN_TYPE(thistype) TYPE_MAIN_TYPE(thistype)->vptr_basetype
1052 #define TYPE_VPTR_FIELDNO(thistype) TYPE_MAIN_TYPE(thistype)->vptr_fieldno
1053 #define TYPE_FN_FIELDS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->fn_fields
1054 #define TYPE_NFN_FIELDS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->nfn_fields
1055 #define TYPE_NFN_FIELDS_TOTAL(thistype) TYPE_CPLUS_SPECIFIC(thistype)->nfn_fields_total
1056 #define TYPE_SPECIFIC_FIELD(thistype) \
1057 TYPE_MAIN_TYPE(thistype)->type_specific_field
1058 #define TYPE_TYPE_SPECIFIC(thistype) TYPE_MAIN_TYPE(thistype)->type_specific
1059 /* We need this tap-dance with the TYPE_RAW_SPECIFIC because of the case
1060 where we're trying to print an Ada array using the C language.
1061 In that case, there is no "cplus_stuff", but the C language assumes
1062 that there is. What we do, in that case, is pretend that there is
1063 an implicit one which is the default cplus stuff. */
1064 #define TYPE_CPLUS_SPECIFIC(thistype) \
1065 (!HAVE_CPLUS_STRUCT(thistype) \
1066 ? (struct cplus_struct_type*)&cplus_struct_default \
1067 : TYPE_RAW_CPLUS_SPECIFIC(thistype))
1068 #define TYPE_RAW_CPLUS_SPECIFIC(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.cplus_stuff
1069 #define TYPE_FLOATFORMAT(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.floatformat
1070 #define TYPE_GNAT_SPECIFIC(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.gnat_stuff
1071 #define TYPE_DESCRIPTIVE_TYPE(thistype) TYPE_GNAT_SPECIFIC(thistype)->descriptive_type
1072 #define TYPE_CALLING_CONVENTION(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.func_stuff->calling_convention
1073 #define TYPE_TAIL_CALL_LIST(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.func_stuff->tail_call_list
1074 #define TYPE_BASECLASS(thistype,index) TYPE_FIELD_TYPE(thistype, index)
1075 #define TYPE_N_BASECLASSES(thistype) TYPE_CPLUS_SPECIFIC(thistype)->n_baseclasses
1076 #define TYPE_BASECLASS_NAME(thistype,index) TYPE_FIELD_NAME(thistype, index)
1077 #define TYPE_BASECLASS_BITPOS(thistype,index) TYPE_FIELD_BITPOS(thistype,index)
1078 #define BASETYPE_VIA_PUBLIC(thistype, index) \
1079 ((!TYPE_FIELD_PRIVATE(thistype, index)) && (!TYPE_FIELD_PROTECTED(thistype, index)))
1080 #define TYPE_CPLUS_DYNAMIC(thistype) TYPE_CPLUS_SPECIFIC (thistype)->is_dynamic
1081 #define TYPE_CPLUS_REALLY_JAVA(thistype) TYPE_CPLUS_SPECIFIC (thistype)->is_java
1083 #define BASETYPE_VIA_VIRTUAL(thistype, index) \
1084 (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits == NULL ? 0 \
1085 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (index)))
1087 #define FIELD_TYPE(thisfld) ((thisfld).type)
1088 #define FIELD_NAME(thisfld) ((thisfld).name)
1089 #define FIELD_LOC_KIND(thisfld) ((thisfld).loc_kind)
1090 #define FIELD_BITPOS(thisfld) ((thisfld).loc.bitpos)
1091 #define FIELD_STATIC_PHYSNAME(thisfld) ((thisfld).loc.physname)
1092 #define FIELD_STATIC_PHYSADDR(thisfld) ((thisfld).loc.physaddr)
1093 #define FIELD_DWARF_BLOCK(thisfld) ((thisfld).loc.dwarf_block)
1094 #define SET_FIELD_BITPOS(thisfld, bitpos) \
1095 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_BITPOS, \
1096 FIELD_BITPOS (thisfld) = (bitpos))
1097 #define SET_FIELD_PHYSNAME(thisfld, name) \
1098 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_PHYSNAME, \
1099 FIELD_STATIC_PHYSNAME (thisfld) = (name))
1100 #define SET_FIELD_PHYSADDR(thisfld, addr) \
1101 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_PHYSADDR, \
1102 FIELD_STATIC_PHYSADDR (thisfld) = (addr))
1103 #define SET_FIELD_DWARF_BLOCK(thisfld, addr) \
1104 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_DWARF_BLOCK, \
1105 FIELD_DWARF_BLOCK (thisfld) = (addr))
1106 #define FIELD_ARTIFICIAL(thisfld) ((thisfld).artificial)
1107 #define FIELD_BITSIZE(thisfld) ((thisfld).bitsize)
1109 #define TYPE_FIELD(thistype, n) TYPE_MAIN_TYPE(thistype)->flds_bnds.fields[n]
1110 #define TYPE_FIELD_TYPE(thistype, n) FIELD_TYPE(TYPE_FIELD(thistype, n))
1111 #define TYPE_FIELD_NAME(thistype, n) FIELD_NAME(TYPE_FIELD(thistype, n))
1112 #define TYPE_FIELD_LOC_KIND(thistype, n) FIELD_LOC_KIND (TYPE_FIELD (thistype, n))
1113 #define TYPE_FIELD_BITPOS(thistype, n) FIELD_BITPOS (TYPE_FIELD (thistype, n))
1114 #define TYPE_FIELD_STATIC_PHYSNAME(thistype, n) FIELD_STATIC_PHYSNAME (TYPE_FIELD (thistype, n))
1115 #define TYPE_FIELD_STATIC_PHYSADDR(thistype, n) FIELD_STATIC_PHYSADDR (TYPE_FIELD (thistype, n))
1116 #define TYPE_FIELD_DWARF_BLOCK(thistype, n) FIELD_DWARF_BLOCK (TYPE_FIELD (thistype, n))
1117 #define TYPE_FIELD_ARTIFICIAL(thistype, n) FIELD_ARTIFICIAL(TYPE_FIELD(thistype,n))
1118 #define TYPE_FIELD_BITSIZE(thistype, n) FIELD_BITSIZE(TYPE_FIELD(thistype,n))
1119 #define TYPE_FIELD_PACKED(thistype, n) (FIELD_BITSIZE(TYPE_FIELD(thistype,n))!=0)
1121 #define TYPE_FIELD_PRIVATE_BITS(thistype) \
1122 TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits
1123 #define TYPE_FIELD_PROTECTED_BITS(thistype) \
1124 TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits
1125 #define TYPE_FIELD_IGNORE_BITS(thistype) \
1126 TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits
1127 #define TYPE_FIELD_VIRTUAL_BITS(thistype) \
1128 TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits
1129 #define SET_TYPE_FIELD_PRIVATE(thistype, n) \
1130 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n))
1131 #define SET_TYPE_FIELD_PROTECTED(thistype, n) \
1132 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n))
1133 #define SET_TYPE_FIELD_IGNORE(thistype, n) \
1134 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits, (n))
1135 #define SET_TYPE_FIELD_VIRTUAL(thistype, n) \
1136 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n))
1137 #define TYPE_FIELD_PRIVATE(thistype, n) \
1138 (TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits == NULL ? 0 \
1139 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n)))
1140 #define TYPE_FIELD_PROTECTED(thistype, n) \
1141 (TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits == NULL ? 0 \
1142 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n)))
1143 #define TYPE_FIELD_IGNORE(thistype, n) \
1144 (TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits == NULL ? 0 \
1145 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits, (n)))
1146 #define TYPE_FIELD_VIRTUAL(thistype, n) \
1147 (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits == NULL ? 0 \
1148 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n)))
1150 #define TYPE_FN_FIELDLISTS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists
1151 #define TYPE_FN_FIELDLIST(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n]
1152 #define TYPE_FN_FIELDLIST1(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].fn_fields
1153 #define TYPE_FN_FIELDLIST_NAME(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].name
1154 #define TYPE_FN_FIELDLIST_LENGTH(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].length
1156 #define TYPE_N_TEMPLATE_ARGUMENTS(thistype) \
1157 TYPE_CPLUS_SPECIFIC (thistype)->n_template_arguments
1158 #define TYPE_TEMPLATE_ARGUMENTS(thistype) \
1159 TYPE_CPLUS_SPECIFIC (thistype)->template_arguments
1160 #define TYPE_TEMPLATE_ARGUMENT(thistype, n) \
1161 TYPE_CPLUS_SPECIFIC (thistype)->template_arguments[n]
1163 #define TYPE_FN_FIELD(thisfn, n) (thisfn)[n]
1164 #define TYPE_FN_FIELD_PHYSNAME(thisfn, n) (thisfn)[n].physname
1165 #define TYPE_FN_FIELD_TYPE(thisfn, n) (thisfn)[n].type
1166 #define TYPE_FN_FIELD_ARGS(thisfn, n) TYPE_FIELDS ((thisfn)[n].type)
1167 #define TYPE_FN_FIELD_CONST(thisfn, n) ((thisfn)[n].is_const)
1168 #define TYPE_FN_FIELD_VOLATILE(thisfn, n) ((thisfn)[n].is_volatile)
1169 #define TYPE_FN_FIELD_PRIVATE(thisfn, n) ((thisfn)[n].is_private)
1170 #define TYPE_FN_FIELD_PROTECTED(thisfn, n) ((thisfn)[n].is_protected)
1171 #define TYPE_FN_FIELD_PUBLIC(thisfn, n) ((thisfn)[n].is_public)
1172 #define TYPE_FN_FIELD_STATIC(thisfn, n) ((thisfn)[n].is_static)
1173 #define TYPE_FN_FIELD_FINAL(thisfn, n) ((thisfn)[n].is_final)
1174 #define TYPE_FN_FIELD_SYNCHRONIZED(thisfn, n) ((thisfn)[n].is_synchronized)
1175 #define TYPE_FN_FIELD_NATIVE(thisfn, n) ((thisfn)[n].is_native)
1176 #define TYPE_FN_FIELD_ARTIFICIAL(thisfn, n) ((thisfn)[n].is_artificial)
1177 #define TYPE_FN_FIELD_ABSTRACT(thisfn, n) ((thisfn)[n].is_abstract)
1178 #define TYPE_FN_FIELD_STUB(thisfn, n) ((thisfn)[n].is_stub)
1179 #define TYPE_FN_FIELD_FCONTEXT(thisfn, n) ((thisfn)[n].fcontext)
1180 #define TYPE_FN_FIELD_VOFFSET(thisfn, n) ((thisfn)[n].voffset-2)
1181 #define TYPE_FN_FIELD_VIRTUAL_P(thisfn, n) ((thisfn)[n].voffset > 1)
1182 #define TYPE_FN_FIELD_STATIC_P(thisfn, n) ((thisfn)[n].voffset == VOFFSET_STATIC)
1184 #define TYPE_LOCALTYPE_PTR(thistype) (TYPE_CPLUS_SPECIFIC(thistype)->localtype_ptr)
1185 #define TYPE_LOCALTYPE_FILE(thistype) (TYPE_CPLUS_SPECIFIC(thistype)->localtype_ptr->file)
1186 #define TYPE_LOCALTYPE_LINE(thistype) (TYPE_CPLUS_SPECIFIC(thistype)->localtype_ptr->line)
1188 #define TYPE_TYPEDEF_FIELD_ARRAY(thistype) \
1189 TYPE_CPLUS_SPECIFIC (thistype)->typedef_field
1190 #define TYPE_TYPEDEF_FIELD(thistype, n) \
1191 TYPE_CPLUS_SPECIFIC (thistype)->typedef_field[n]
1192 #define TYPE_TYPEDEF_FIELD_NAME(thistype, n) \
1193 TYPE_TYPEDEF_FIELD (thistype, n).name
1194 #define TYPE_TYPEDEF_FIELD_TYPE(thistype, n) \
1195 TYPE_TYPEDEF_FIELD (thistype, n).type
1196 #define TYPE_TYPEDEF_FIELD_COUNT(thistype) \
1197 TYPE_CPLUS_SPECIFIC (thistype)->typedef_field_count
1199 #define TYPE_IS_OPAQUE(thistype) \
1200 (((TYPE_CODE (thistype) == TYPE_CODE_STRUCT) \
1201 || (TYPE_CODE (thistype) == TYPE_CODE_UNION)) \
1202 && (TYPE_NFIELDS (thistype) == 0) \
1203 && (!HAVE_CPLUS_STRUCT (thistype) \
1204 || TYPE_NFN_FIELDS (thistype) == 0) \
1205 && (TYPE_STUB (thistype) || !TYPE_STUB_SUPPORTED (thistype)))
1207 /* A helper macro that returns the name of an error type. If the type
1208 has a name, it is used; otherwise, a default is used. */
1209 #define TYPE_ERROR_NAME(type) \
1210 (TYPE_NAME (type) ? TYPE_NAME (type) : _("<error type>"))
1214 /* Integral types. */
1216 /* Implicit size/sign (based on the architecture's ABI). */
1217 struct type *builtin_void;
1218 struct type *builtin_char;
1219 struct type *builtin_short;
1220 struct type *builtin_int;
1221 struct type *builtin_long;
1222 struct type *builtin_signed_char;
1223 struct type *builtin_unsigned_char;
1224 struct type *builtin_unsigned_short;
1225 struct type *builtin_unsigned_int;
1226 struct type *builtin_unsigned_long;
1227 struct type *builtin_float;
1228 struct type *builtin_double;
1229 struct type *builtin_long_double;
1230 struct type *builtin_complex;
1231 struct type *builtin_double_complex;
1232 struct type *builtin_string;
1233 struct type *builtin_bool;
1234 struct type *builtin_long_long;
1235 struct type *builtin_unsigned_long_long;
1236 struct type *builtin_decfloat;
1237 struct type *builtin_decdouble;
1238 struct type *builtin_declong;
1240 /* "True" character types.
1241 We use these for the '/c' print format, because c_char is just a
1242 one-byte integral type, which languages less laid back than C
1243 will print as ... well, a one-byte integral type. */
1244 struct type *builtin_true_char;
1245 struct type *builtin_true_unsigned_char;
1247 /* Explicit sizes - see C9X <intypes.h> for naming scheme. The "int0"
1248 is for when an architecture needs to describe a register that has
1250 struct type *builtin_int0;
1251 struct type *builtin_int8;
1252 struct type *builtin_uint8;
1253 struct type *builtin_int16;
1254 struct type *builtin_uint16;
1255 struct type *builtin_int32;
1256 struct type *builtin_uint32;
1257 struct type *builtin_int64;
1258 struct type *builtin_uint64;
1259 struct type *builtin_int128;
1260 struct type *builtin_uint128;
1262 /* Wide character types. */
1263 struct type *builtin_char16;
1264 struct type *builtin_char32;
1266 /* Pointer types. */
1268 /* `pointer to data' type. Some target platforms use an implicitly
1269 {sign,zero} -extended 32-bit ABI pointer on a 64-bit ISA. */
1270 struct type *builtin_data_ptr;
1272 /* `pointer to function (returning void)' type. Harvard
1273 architectures mean that ABI function and code pointers are not
1274 interconvertible. Similarly, since ANSI, C standards have
1275 explicitly said that pointers to functions and pointers to data
1276 are not interconvertible --- that is, you can't cast a function
1277 pointer to void * and back, and expect to get the same value.
1278 However, all function pointer types are interconvertible, so void
1279 (*) () can server as a generic function pointer. */
1280 struct type *builtin_func_ptr;
1282 /* `function returning pointer to function (returning void)' type.
1283 The final void return type is not significant for it. */
1284 struct type *builtin_func_func;
1287 /* Special-purpose types. */
1289 /* This type is used to represent a GDB internal function. */
1290 struct type *internal_fn;
1293 /* Return the type table for the specified architecture. */
1294 extern const struct builtin_type *builtin_type (struct gdbarch *gdbarch);
1297 /* Per-objfile types used by symbol readers. */
1301 /* Basic types based on the objfile architecture. */
1302 struct type *builtin_void;
1303 struct type *builtin_char;
1304 struct type *builtin_short;
1305 struct type *builtin_int;
1306 struct type *builtin_long;
1307 struct type *builtin_long_long;
1308 struct type *builtin_signed_char;
1309 struct type *builtin_unsigned_char;
1310 struct type *builtin_unsigned_short;
1311 struct type *builtin_unsigned_int;
1312 struct type *builtin_unsigned_long;
1313 struct type *builtin_unsigned_long_long;
1314 struct type *builtin_float;
1315 struct type *builtin_double;
1316 struct type *builtin_long_double;
1318 /* This type is used to represent symbol addresses. */
1319 struct type *builtin_core_addr;
1321 /* This type represents a type that was unrecognized in symbol read-in. */
1322 struct type *builtin_error;
1324 /* Types used for symbols with no debug information. */
1325 struct type *nodebug_text_symbol;
1326 struct type *nodebug_text_gnu_ifunc_symbol;
1327 struct type *nodebug_got_plt_symbol;
1328 struct type *nodebug_data_symbol;
1329 struct type *nodebug_unknown_symbol;
1330 struct type *nodebug_tls_symbol;
1333 /* Return the type table for the specified objfile. */
1334 extern const struct objfile_type *objfile_type (struct objfile *objfile);
1337 /* Explicit floating-point formats. See "floatformat.h". */
1338 extern const struct floatformat *floatformats_ieee_half[BFD_ENDIAN_UNKNOWN];
1339 extern const struct floatformat *floatformats_ieee_single[BFD_ENDIAN_UNKNOWN];
1340 extern const struct floatformat *floatformats_ieee_double[BFD_ENDIAN_UNKNOWN];
1341 extern const struct floatformat *floatformats_ieee_double_littlebyte_bigword[BFD_ENDIAN_UNKNOWN];
1342 extern const struct floatformat *floatformats_i387_ext[BFD_ENDIAN_UNKNOWN];
1343 extern const struct floatformat *floatformats_m68881_ext[BFD_ENDIAN_UNKNOWN];
1344 extern const struct floatformat *floatformats_arm_ext[BFD_ENDIAN_UNKNOWN];
1345 extern const struct floatformat *floatformats_ia64_spill[BFD_ENDIAN_UNKNOWN];
1346 extern const struct floatformat *floatformats_ia64_quad[BFD_ENDIAN_UNKNOWN];
1347 extern const struct floatformat *floatformats_vax_f[BFD_ENDIAN_UNKNOWN];
1348 extern const struct floatformat *floatformats_vax_d[BFD_ENDIAN_UNKNOWN];
1349 extern const struct floatformat *floatformats_ibm_long_double[BFD_ENDIAN_UNKNOWN];
1352 /* Allocate space for storing data associated with a particular type.
1353 We ensure that the space is allocated using the same mechanism that
1354 was used to allocate the space for the type structure itself. I.e.
1355 if the type is on an objfile's objfile_obstack, then the space for data
1356 associated with that type will also be allocated on the objfile_obstack.
1357 If the type is not associated with any particular objfile (such as
1358 builtin types), then the data space will be allocated with xmalloc,
1359 the same as for the type structure. */
1361 #define TYPE_ALLOC(t,size) \
1362 (TYPE_OBJFILE_OWNED (t) \
1363 ? obstack_alloc (&TYPE_OBJFILE (t) -> objfile_obstack, size) \
1366 #define TYPE_ZALLOC(t,size) \
1367 (TYPE_OBJFILE_OWNED (t) \
1368 ? memset (obstack_alloc (&TYPE_OBJFILE (t)->objfile_obstack, size), \
1372 /* Use alloc_type to allocate a type owned by an objfile.
1373 Use alloc_type_arch to allocate a type owned by an architecture.
1374 Use alloc_type_copy to allocate a type with the same owner as a
1375 pre-existing template type, no matter whether objfile or gdbarch. */
1376 extern struct type *alloc_type (struct objfile *);
1377 extern struct type *alloc_type_arch (struct gdbarch *);
1378 extern struct type *alloc_type_copy (const struct type *);
1380 /* Return the type's architecture. For types owned by an architecture,
1381 that architecture is returned. For types owned by an objfile, that
1382 objfile's architecture is returned. */
1383 extern struct gdbarch *get_type_arch (const struct type *);
1385 /* Helper function to construct objfile-owned types. */
1386 extern struct type *init_type (enum type_code, int, int, char *,
1389 /* Helper functions to construct architecture-owned types. */
1390 extern struct type *arch_type (struct gdbarch *, enum type_code, int, char *);
1391 extern struct type *arch_integer_type (struct gdbarch *, int, int, char *);
1392 extern struct type *arch_character_type (struct gdbarch *, int, int, char *);
1393 extern struct type *arch_boolean_type (struct gdbarch *, int, int, char *);
1394 extern struct type *arch_float_type (struct gdbarch *, int, char *,
1395 const struct floatformat **);
1396 extern struct type *arch_complex_type (struct gdbarch *, char *,
1399 /* Helper functions to construct a struct or record type. An
1400 initially empty type is created using arch_composite_type().
1401 Fields are then added using append_composite_type_field*(). A union
1402 type has its size set to the largest field. A struct type has each
1403 field packed against the previous. */
1405 extern struct type *arch_composite_type (struct gdbarch *gdbarch,
1406 char *name, enum type_code code);
1407 extern void append_composite_type_field (struct type *t, char *name,
1408 struct type *field);
1409 extern void append_composite_type_field_aligned (struct type *t,
1413 struct field *append_composite_type_field_raw (struct type *t, char *name,
1414 struct type *field);
1416 /* Helper functions to construct a bit flags type. An initially empty
1417 type is created using arch_flag_type(). Flags are then added using
1418 append_flag_type_flag(). */
1419 extern struct type *arch_flags_type (struct gdbarch *gdbarch,
1420 char *name, int length);
1421 extern void append_flags_type_flag (struct type *type, int bitpos, char *name);
1423 extern void make_vector_type (struct type *array_type);
1424 extern struct type *init_vector_type (struct type *elt_type, int n);
1426 extern struct type *lookup_reference_type (struct type *);
1428 extern struct type *make_reference_type (struct type *, struct type **);
1430 extern struct type *make_cv_type (int, int, struct type *, struct type **);
1432 extern void replace_type (struct type *, struct type *);
1434 extern int address_space_name_to_int (struct gdbarch *, char *);
1436 extern const char *address_space_int_to_name (struct gdbarch *, int);
1438 extern struct type *make_type_with_address_space (struct type *type,
1439 int space_identifier);
1441 extern struct type *lookup_memberptr_type (struct type *, struct type *);
1443 extern struct type *lookup_methodptr_type (struct type *);
1445 extern void smash_to_method_type (struct type *type, struct type *domain,
1446 struct type *to_type, struct field *args,
1447 int nargs, int varargs);
1449 extern void smash_to_memberptr_type (struct type *, struct type *,
1452 extern void smash_to_methodptr_type (struct type *, struct type *);
1454 extern struct type *allocate_stub_method (struct type *);
1456 extern char *type_name_no_tag (const struct type *);
1458 extern const char *type_name_no_tag_or_error (struct type *type);
1460 extern struct type *lookup_struct_elt_type (struct type *, char *, int);
1462 extern struct type *make_pointer_type (struct type *, struct type **);
1464 extern struct type *lookup_pointer_type (struct type *);
1466 extern struct type *make_function_type (struct type *, struct type **);
1468 extern struct type *lookup_function_type (struct type *);
1470 extern struct type *create_range_type (struct type *, struct type *, LONGEST,
1473 extern struct type *create_array_type (struct type *, struct type *,
1475 extern struct type *lookup_array_range_type (struct type *, int, int);
1477 extern struct type *create_string_type (struct type *, struct type *,
1479 extern struct type *lookup_string_range_type (struct type *, int, int);
1481 extern struct type *create_set_type (struct type *, struct type *);
1483 extern struct type *lookup_unsigned_typename (const struct language_defn *,
1484 struct gdbarch *,char *);
1486 extern struct type *lookup_signed_typename (const struct language_defn *,
1487 struct gdbarch *,char *);
1489 extern struct type *check_typedef (struct type *);
1491 #define CHECK_TYPEDEF(TYPE) \
1493 (TYPE) = check_typedef (TYPE); \
1496 extern void check_stub_method_group (struct type *, int);
1498 extern char *gdb_mangle_name (struct type *, int, int);
1500 extern struct type *lookup_typename (const struct language_defn *,
1501 struct gdbarch *, const char *,
1502 const struct block *, int);
1504 extern struct type *lookup_template_type (char *, struct type *,
1507 extern int get_vptr_fieldno (struct type *, struct type **);
1509 extern int get_discrete_bounds (struct type *, LONGEST *, LONGEST *);
1511 extern int get_array_bounds (struct type *type, LONGEST *low_bound,
1512 LONGEST *high_bound);
1514 extern int class_types_same_p (const struct type *, const struct type *);
1516 extern int is_ancestor (struct type *, struct type *);
1518 extern int is_public_ancestor (struct type *, struct type *);
1520 extern int is_unique_ancestor (struct type *, struct value *);
1522 /* Overload resolution */
1524 #define LENGTH_MATCH(bv) ((bv)->rank[0])
1526 /* Badness if parameter list length doesn't match arg list length. */
1527 extern const struct rank LENGTH_MISMATCH_BADNESS;
1529 /* Dummy badness value for nonexistent parameter positions. */
1530 extern const struct rank TOO_FEW_PARAMS_BADNESS;
1531 /* Badness if no conversion among types. */
1532 extern const struct rank INCOMPATIBLE_TYPE_BADNESS;
1534 /* Badness of an exact match. */
1535 extern const struct rank EXACT_MATCH_BADNESS;
1537 /* Badness of integral promotion. */
1538 extern const struct rank INTEGER_PROMOTION_BADNESS;
1539 /* Badness of floating promotion. */
1540 extern const struct rank FLOAT_PROMOTION_BADNESS;
1541 /* Badness of converting a derived class pointer
1542 to a base class pointer. */
1543 extern const struct rank BASE_PTR_CONVERSION_BADNESS;
1544 /* Badness of integral conversion. */
1545 extern const struct rank INTEGER_CONVERSION_BADNESS;
1546 /* Badness of floating conversion. */
1547 extern const struct rank FLOAT_CONVERSION_BADNESS;
1548 /* Badness of integer<->floating conversions. */
1549 extern const struct rank INT_FLOAT_CONVERSION_BADNESS;
1550 /* Badness of conversion of pointer to void pointer. */
1551 extern const struct rank VOID_PTR_CONVERSION_BADNESS;
1552 /* Badness of conversion of pointer to boolean. */
1553 extern const struct rank BOOL_PTR_CONVERSION_BADNESS;
1554 /* Badness of converting derived to base class. */
1555 extern const struct rank BASE_CONVERSION_BADNESS;
1556 /* Badness of converting from non-reference to reference. */
1557 extern const struct rank REFERENCE_CONVERSION_BADNESS;
1559 /* Non-standard conversions allowed by the debugger */
1560 /* Converting a pointer to an int is usually OK. */
1561 extern const struct rank NS_POINTER_CONVERSION_BADNESS;
1564 extern struct rank sum_ranks (struct rank a, struct rank b);
1565 extern int compare_ranks (struct rank a, struct rank b);
1567 extern int compare_badness (struct badness_vector *, struct badness_vector *);
1569 extern struct badness_vector *rank_function (struct type **, int,
1570 struct type **, int);
1572 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 */