1 /* Internal type definitions for GDB.
2 Copyright (C) 1992 Free Software Foundation, Inc.
3 Contributed by Cygnus Support, using pieces from other GDB modules.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
21 #if !defined (GDBTYPES_H)
24 /* When gdb creates fundamental types, it uses one of the following
25 type identifiers. The identifiers are used to index a vector of
26 pointers to any types that are created. */
31 #define FT_SIGNED_CHAR 3
32 #define FT_UNSIGNED_CHAR 4
34 #define FT_SIGNED_SHORT 6
35 #define FT_UNSIGNED_SHORT 7
37 #define FT_SIGNED_INTEGER 9
38 #define FT_UNSIGNED_INTEGER 10
40 #define FT_SIGNED_LONG 12
41 #define FT_UNSIGNED_LONG 13
42 #define FT_LONG_LONG 14
43 #define FT_SIGNED_LONG_LONG 15
44 #define FT_UNSIGNED_LONG_LONG 16
46 #define FT_DBL_PREC_FLOAT 18
47 #define FT_EXT_PREC_FLOAT 19
49 #define FT_DBL_PREC_COMPLEX 21
50 #define FT_EXT_PREC_COMPLEX 22
53 #define FT_NUM_MEMBERS 24
55 /* Different kinds of data types are distinguished by the `code' field. */
59 TYPE_CODE_UNDEF
, /* Not used; catches errors */
60 TYPE_CODE_PTR
, /* Pointer type */
61 TYPE_CODE_ARRAY
, /* Array type, lower bound zero */
62 TYPE_CODE_STRUCT
, /* C struct or Pascal record */
63 TYPE_CODE_UNION
, /* C union or Pascal variant part */
64 TYPE_CODE_ENUM
, /* Enumeration type */
65 TYPE_CODE_FUNC
, /* Function type */
66 TYPE_CODE_INT
, /* Integer type */
67 TYPE_CODE_FLT
, /* Floating type */
68 TYPE_CODE_VOID
, /* Void type (values zero length) */
69 TYPE_CODE_SET
, /* Pascal sets */
70 TYPE_CODE_RANGE
, /* Range (integers within spec'd bounds) */
71 TYPE_CODE_PASCAL_ARRAY
, /* Array with explicit type of index */
72 TYPE_CODE_ERROR
, /* Unknown type */
75 TYPE_CODE_MEMBER
, /* Member type */
76 TYPE_CODE_METHOD
, /* Method type */
77 TYPE_CODE_REF
, /* C++ Reference types */
80 TYPE_CODE_CHAR
, /* *real* character type */
81 TYPE_CODE_BOOL
/* Builtin Modula-2 BOOLEAN */
84 /* Some bits for the type's flags word. */
86 /* Explicitly unsigned integer type */
88 #define TYPE_FLAG_UNSIGNED (1 << 0)
90 /* Explicity signed integer type */
92 #define TYPE_FLAG_SIGNED (1 << 1)
94 /* This appears in a type's flags word if it is a stub type (eg. if
95 someone referenced a type that wasn't defined in a source file
96 via (struct sir_not_appearing_in_this_film *)). */
98 #define TYPE_FLAG_STUB (1 << 2)
103 /* Code for kind of type */
107 /* Name of this type, or NULL if none.
108 This is used for printing only, except by poorly designed C++ code.
109 Type names specified as input are defined by symbols. */
113 /* Length in bytes of storage for a value of this type */
117 /* Every type is now associated with a particular objfile, and the
118 type is allocated on the type_obstack for that objfile. One problem
119 however, is that there are times when gdb allocates new types while
120 it is not in the process of reading symbols from a particular objfile.
121 Fortunately, these happen when the type being created is a derived
122 type of an existing type, such as in lookup_pointer_type(). So
123 we can just allocate the new type using the same objfile as the
124 existing type, but to do this we need a backpointer to the objfile
125 from the existing type. Yes this is somewhat ugly, but without
126 major overhaul of the internal type system, it can't be avoided
129 struct objfile
*objfile
;
131 /* For a pointer type, describes the type of object pointed to.
132 For an array type, describes the type of the elements.
133 For a function or method type, describes the type of the return value.
134 For a range type, describes the type of the full range.
137 struct type
*target_type
;
139 /* Type that is a pointer to this type.
140 NULL if no such pointer-to type is known yet.
141 The debugger may add the address of such a type
142 if it has to construct one later. */
144 struct type
*pointer_type
;
146 /* C++: also need a reference type. */
148 struct type
*reference_type
;
150 /* Type that is a function returning this type.
151 NULL if no such function type is known here.
152 The debugger may add the address of such a type
153 if it has to construct one later. */
155 struct type
*function_type
;
157 /* Flags about this type. */
161 /* Number of fields described for this type */
165 /* For structure and union types, a description of each field.
166 For set and pascal array types, there is one "field",
167 whose type is the domain type of the set or array.
168 For range types, there are two "fields",
169 the minimum and maximum values (both inclusive).
170 For enum types, each possible value is described by one "field".
172 Using a pointer to a separate array of fields
173 allows all types to have the same size, which is useful
174 because we can allocate the space for a type before
175 we know what to put in it. */
180 /* Position of this field, counting in bits from start of
181 containing structure. For a function type, this is the
182 position in the argument list of this argument.
183 For a range bound or enum value, this is the value itself. */
187 /* Size of this field, in bits, or zero if not packed.
188 For an unpacked field, the field's type's length
189 says how many bytes the field occupies. */
193 /* In a struct or enum type, type of this field.
194 In a function type, type of this argument.
195 In an array type, the domain-type of the array. */
199 /* Name of field, value or argument.
200 NULL for range bounds and array domains. */
206 /* For types with virtual functions, VPTR_BASETYPE is the base class which
207 defined the virtual function table pointer. VPTR_FIELDNO is
208 the field number of that pointer in the structure.
210 For types that are pointer to member types, VPTR_BASETYPE
211 is the type that this pointer is a member of.
215 struct type
*vptr_basetype
;
219 /* Slot to point to additional language-specific fields of this type. */
224 /* ARG_TYPES is for TYPE_CODE_METHOD and TYPE_CODE_FUNC. */
226 struct type
**arg_types
;
228 /* CPLUS_STUFF is for TYPE_CODE_STRUCT. */
230 struct cplus_struct_type
*cplus_stuff
;
235 #define NULL_TYPE ((struct type *) 0)
237 /* C++ language-specific information for TYPE_CODE_STRUCT and TYPE_CODE_UNION
240 struct cplus_struct_type
243 B_TYPE
*virtual_field_bits
; /* if base class is virtual */
245 B_TYPE
*private_field_bits
;
247 B_TYPE
*protected_field_bits
;
249 /* Number of methods described for this type */
253 /* Number of base classes this type derives from. */
257 /* Number of methods described for this type plus all the
258 methods that it derives from. */
260 int nfn_fields_total
;
262 /* For classes, structures, and unions, a description of each field,
263 which consists of an overloaded name, followed by the types of
264 arguments that the method expects, and then the name after it
265 has been renamed to make it distinct. */
270 /* The overloaded name. */
274 /* The number of methods with this name. */
278 /* The list of methods. */
283 /* The return value of the method */
287 /* The argument list */
291 /* The name after it has been processed */
295 /* For virtual functions. */
296 /* First baseclass that defines this virtual function. */
298 struct type
*fcontext
;
300 unsigned int is_const
: 1;
301 unsigned int is_volatile
: 1;
302 unsigned int is_private
: 1;
303 unsigned int is_protected
: 1;
304 unsigned int is_stub
: 1;
305 unsigned int dummy
: 3;
307 /* Index into that baseclass's virtual function table,
308 minus 2; else if static: VOFFSET_STATIC; else: 0. */
310 unsigned voffset
: 24;
312 # define VOFFSET_STATIC 1
318 unsigned char via_protected
;
320 unsigned char via_public
;
323 /* The default value of TYPE_CPLUS_SPECIFIC(T) points to the
324 this shared static structure. */
326 extern const struct cplus_struct_type cplus_struct_default
;
329 allocate_cplus_struct_type
PARAMS ((struct type
*));
331 #define INIT_CPLUS_SPECIFIC(type) \
332 (TYPE_CPLUS_SPECIFIC(type)=(struct cplus_struct_type*)&cplus_struct_default)
333 #define ALLOCATE_CPLUS_STRUCT_TYPE(type) allocate_cplus_struct_type (type)
334 #define HAVE_CPLUS_STRUCT(type) \
335 (TYPE_CPLUS_SPECIFIC(type) != &cplus_struct_default)
337 #define TYPE_NAME(thistype) (thistype)->name
338 #define TYPE_TARGET_TYPE(thistype) (thistype)->target_type
339 #define TYPE_POINTER_TYPE(thistype) (thistype)->pointer_type
340 #define TYPE_REFERENCE_TYPE(thistype) (thistype)->reference_type
341 #define TYPE_FUNCTION_TYPE(thistype) (thistype)->function_type
342 #define TYPE_LENGTH(thistype) (thistype)->length
343 #define TYPE_OBJFILE(thistype) (thistype)->objfile
344 #define TYPE_FLAGS(thistype) (thistype)->flags
345 #define TYPE_UNSIGNED(thistype) ((thistype)->flags & TYPE_FLAG_UNSIGNED)
346 #define TYPE_CODE(thistype) (thistype)->code
347 #define TYPE_NFIELDS(thistype) (thistype)->nfields
348 #define TYPE_FIELDS(thistype) (thistype)->fields
352 #define TYPE_VPTR_BASETYPE(thistype) (thistype)->vptr_basetype
353 #define TYPE_DOMAIN_TYPE(thistype) (thistype)->vptr_basetype
354 #define TYPE_VPTR_FIELDNO(thistype) (thistype)->vptr_fieldno
355 #define TYPE_FN_FIELDS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->fn_fields
356 #define TYPE_NFN_FIELDS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->nfn_fields
357 #define TYPE_NFN_FIELDS_TOTAL(thistype) TYPE_CPLUS_SPECIFIC(thistype)->nfn_fields_total
358 #define TYPE_TYPE_SPECIFIC(thistype) (thistype)->type_specific
359 #define TYPE_ARG_TYPES(thistype) (thistype)->type_specific.arg_types
360 #define TYPE_CPLUS_SPECIFIC(thistype) (thistype)->type_specific.cplus_stuff
361 #define TYPE_BASECLASS(thistype,index) (thistype)->fields[index].type
362 #define TYPE_N_BASECLASSES(thistype) TYPE_CPLUS_SPECIFIC(thistype)->n_baseclasses
363 #define TYPE_BASECLASS_NAME(thistype,index) (thistype)->fields[index].name
364 #define TYPE_BASECLASS_BITPOS(thistype,index) (thistype)->fields[index].bitpos
365 #define BASETYPE_VIA_PUBLIC(thistype, index) (!TYPE_FIELD_PRIVATE(thistype, index))
366 #define BASETYPE_VIA_VIRTUAL(thistype, index) \
367 B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (index))
369 #define TYPE_FIELD(thistype, n) (thistype)->fields[n]
370 #define TYPE_FIELD_TYPE(thistype, n) (thistype)->fields[n].type
371 #define TYPE_FIELD_NAME(thistype, n) (thistype)->fields[n].name
372 #define TYPE_FIELD_VALUE(thistype, n) (* (int*) &(thistype)->fields[n].type)
373 #define TYPE_FIELD_BITPOS(thistype, n) (thistype)->fields[n].bitpos
374 #define TYPE_FIELD_BITSIZE(thistype, n) (thistype)->fields[n].bitsize
375 #define TYPE_FIELD_PACKED(thistype, n) (thistype)->fields[n].bitsize
377 #define TYPE_FIELD_PRIVATE_BITS(thistype) \
378 TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits
379 #define TYPE_FIELD_PROTECTED_BITS(thistype) \
380 TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits
381 #define TYPE_FIELD_VIRTUAL_BITS(thistype) \
382 TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits
383 #define SET_TYPE_FIELD_PRIVATE(thistype, n) \
384 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n))
385 #define SET_TYPE_FIELD_PROTECTED(thistype, n) \
386 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n))
387 #define SET_TYPE_FIELD_VIRTUAL(thistype, n) \
388 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n))
389 #define TYPE_FIELD_PRIVATE(thistype, n) \
390 (TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits == NULL ? 0 \
391 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n)))
392 #define TYPE_FIELD_PROTECTED(thistype, n) \
393 (TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits == NULL ? 0 \
394 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n)))
395 #define TYPE_FIELD_VIRTUAL(thistype, n) \
396 B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n))
398 #define TYPE_FIELD_STATIC(thistype, n) ((thistype)->fields[n].bitpos == -1)
399 #define TYPE_FIELD_STATIC_PHYSNAME(thistype, n) ((char *)(thistype)->fields[n].bitsize)
401 #define TYPE_FN_FIELDLISTS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists
402 #define TYPE_FN_FIELDLIST(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n]
403 #define TYPE_FN_FIELDLIST1(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].fn_fields
404 #define TYPE_FN_FIELDLIST_NAME(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].name
405 #define TYPE_FN_FIELDLIST_LENGTH(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].length
407 #define TYPE_FN_FIELD(thisfn, n) (thisfn)[n]
408 #define TYPE_FN_FIELD_NAME(thisfn, n) (thisfn)[n].name
409 #define TYPE_FN_FIELD_TYPE(thisfn, n) (thisfn)[n].type
410 #define TYPE_FN_FIELD_ARGS(thisfn, n) TYPE_ARG_TYPES ((thisfn)[n].type)
411 #define TYPE_FN_FIELD_PHYSNAME(thisfn, n) (thisfn)[n].physname
412 #define TYPE_FN_FIELD_VIRTUAL_P(thisfn, n) ((thisfn)[n].voffset > 1)
413 #define TYPE_FN_FIELD_STATIC_P(thisfn, n) ((thisfn)[n].voffset == VOFFSET_STATIC)
414 #define TYPE_FN_FIELD_VOFFSET(thisfn, n) ((thisfn)[n].voffset-2)
415 #define TYPE_FN_FIELD_FCONTEXT(thisfn, n) ((thisfn)[n].fcontext)
416 #define TYPE_FN_FIELD_STUB(thisfn, n) ((thisfn)[n].is_stub)
417 #define TYPE_FN_FIELD_PRIVATE(thisfn, n) ((thisfn)[n].is_private)
418 #define TYPE_FN_FIELD_PROTECTED(thisfn, n) ((thisfn)[n].is_protected)
420 extern struct type
*builtin_type_void
;
421 extern struct type
*builtin_type_char
;
422 extern struct type
*builtin_type_short
;
423 extern struct type
*builtin_type_int
;
424 extern struct type
*builtin_type_long
;
425 extern struct type
*builtin_type_unsigned_char
;
426 extern struct type
*builtin_type_unsigned_short
;
427 extern struct type
*builtin_type_unsigned_int
;
428 extern struct type
*builtin_type_unsigned_long
;
429 extern struct type
*builtin_type_float
;
430 extern struct type
*builtin_type_double
;
431 extern struct type
*builtin_type_long_double
;
432 extern struct type
*builtin_type_complex
;
433 extern struct type
*builtin_type_double_complex
;
435 /* This type represents a type that was unrecognized in symbol
438 extern struct type
*builtin_type_error
;
440 extern struct type
*builtin_type_long_long
;
441 extern struct type
*builtin_type_unsigned_long_long
;
445 extern struct type
*builtin_type_m2_char
;
446 extern struct type
*builtin_type_m2_int
;
447 extern struct type
*builtin_type_m2_card
;
448 extern struct type
*builtin_type_m2_real
;
449 extern struct type
*builtin_type_m2_bool
;
451 /* LONG_LONG is defined if the host has "long long". */
455 #define BUILTIN_TYPE_LONGEST builtin_type_long_long
456 #define BUILTIN_TYPE_UNSIGNED_LONGEST builtin_type_unsigned_long_long
458 #else /* not LONG_LONG. */
460 #define BUILTIN_TYPE_LONGEST builtin_type_long
461 #define BUILTIN_TYPE_UNSIGNED_LONGEST builtin_type_unsigned_long
463 #endif /* not LONG_LONG. */
465 /* Maximum and minimum values of built-in types */
467 #define MAX_OF_TYPE(t) \
468 TYPE_UNSIGNED(t) ? UMAX_OF_SIZE(TYPE_LENGTH(t)) \
469 : MAX_OF_SIZE(TYPE_LENGTH(t))
471 #define MIN_OF_TYPE(t) \
472 TYPE_UNSIGNED(t) ? UMIN_OF_SIZE(TYPE_LENGTH(t)) \
473 : MIN_OF_SIZE(TYPE_LENGTH(t))
476 alloc_type
PARAMS ((struct objfile
*));
479 init_type
PARAMS ((enum type_code
, int, int, char *, struct objfile
*));
482 lookup_reference_type
PARAMS ((struct type
*));
485 lookup_member_type
PARAMS ((struct type
*, struct type
*));
488 smash_to_method_type
PARAMS ((struct type
*, struct type
*, struct type
*,
492 smash_to_member_type
PARAMS ((struct type
*, struct type
*, struct type
*));
495 allocate_stub_method
PARAMS ((struct type
*));
498 type_name_no_tag
PARAMS ((const struct type
*));
501 lookup_struct_elt_type
PARAMS ((struct type
*, char *, int));
504 lookup_pointer_type
PARAMS ((struct type
*));
507 lookup_function_type
PARAMS ((struct type
*));
510 create_array_type
PARAMS ((struct type
*, int));
513 lookup_unsigned_typename
PARAMS ((char *));
516 check_stub_type
PARAMS ((struct type
*));
519 check_stub_method
PARAMS ((struct type
*, int, int));
522 lookup_primitive_typename
PARAMS ((char *));
525 gdb_mangle_name
PARAMS ((struct type
*, int, int));
528 builtin_type
PARAMS ((char **));
531 error_type
PARAMS ((char **));
534 lookup_typename
PARAMS ((char *, struct block
*, int));
537 lookup_template_type
PARAMS ((char *, struct type
*, struct block
*));
540 lookup_fundamental_type
PARAMS ((struct objfile
*, int));
545 print_scalar_formatted
PARAMS ((char *, struct type
*, int, int, FILE *));
547 #endif /* GDBTYPES_H */