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
52 #define FT_FIXED_DECIMAL 24
53 #define FT_FLOAT_DECIMAL 25
55 #define FT_NUM_MEMBERS 26
57 /* Different kinds of data types are distinguished by the `code' field. */
61 TYPE_CODE_UNDEF
, /* Not used; catches errors */
62 TYPE_CODE_PTR
, /* Pointer type */
63 TYPE_CODE_ARRAY
, /* Array type, lower bound zero */
64 TYPE_CODE_STRUCT
, /* C struct or Pascal record */
65 TYPE_CODE_UNION
, /* C union or Pascal variant part */
66 TYPE_CODE_ENUM
, /* Enumeration type */
67 TYPE_CODE_FUNC
, /* Function type */
68 TYPE_CODE_INT
, /* Integer type */
69 TYPE_CODE_FLT
, /* Floating type */
70 TYPE_CODE_VOID
, /* Void type (values zero length) */
71 TYPE_CODE_SET
, /* Pascal sets */
72 TYPE_CODE_RANGE
, /* Range (integers within spec'd bounds) */
73 TYPE_CODE_PASCAL_ARRAY
, /* Array with explicit type of index */
74 TYPE_CODE_ERROR
, /* Unknown type */
77 TYPE_CODE_MEMBER
, /* Member type */
78 TYPE_CODE_METHOD
, /* Method type */
79 TYPE_CODE_REF
, /* C++ Reference types */
82 TYPE_CODE_CHAR
, /* *real* character type */
83 TYPE_CODE_BOOL
/* Builtin Modula-2 BOOLEAN */
86 /* Some bits for the type's flags word. */
88 /* Explicitly unsigned integer type */
90 #define TYPE_FLAG_UNSIGNED (1 << 0)
92 /* Explicitly signed integer type */
94 #define TYPE_FLAG_SIGNED (1 << 1)
96 /* This appears in a type's flags word if it is a stub type (eg. if
97 someone referenced a type that wasn't defined in a source file
98 via (struct sir_not_appearing_in_this_film *)). */
100 #define TYPE_FLAG_STUB (1 << 2)
102 /* This type is a fundamental type in the current source language. */
104 #define TYPE_FLAG_FUND_TYPE (1 << 3)
110 /* Code for kind of type */
114 /* Name of this type, or NULL if none.
115 This is used for printing only, except by poorly designed C++ code.
116 Type names specified as input are defined by symbols. */
120 /* Length in bytes of storage for a value of this type */
124 /* Every type is now associated with a particular objfile, and the
125 type is allocated on the type_obstack for that objfile. One problem
126 however, is that there are times when gdb allocates new types while
127 it is not in the process of reading symbols from a particular objfile.
128 Fortunately, these happen when the type being created is a derived
129 type of an existing type, such as in lookup_pointer_type(). So
130 we can just allocate the new type using the same objfile as the
131 existing type, but to do this we need a backpointer to the objfile
132 from the existing type. Yes this is somewhat ugly, but without
133 major overhaul of the internal type system, it can't be avoided
136 struct objfile
*objfile
;
138 /* For a pointer type, describes the type of object pointed to.
139 For an array type, describes the type of the elements.
140 For a function or method type, describes the type of the return value.
141 For a range type, describes the type of the full range.
144 struct type
*target_type
;
146 /* Type that is a pointer to this type.
147 NULL if no such pointer-to type is known yet.
148 The debugger may add the address of such a type
149 if it has to construct one later. */
151 struct type
*pointer_type
;
153 /* C++: also need a reference type. */
155 struct type
*reference_type
;
157 /* Type that is a function returning this type.
158 NULL if no such function type is known here.
159 The debugger may add the address of such a type
160 if it has to construct one later. */
162 struct type
*function_type
;
164 /* Flags about this type. */
168 /* Number of fields described for this type */
172 /* For structure and union types, a description of each field.
173 For set and pascal array types, there is one "field",
174 whose type is the domain type of the set or array.
175 For range types, there are two "fields",
176 the minimum and maximum values (both inclusive).
177 For enum types, each possible value is described by one "field".
179 Using a pointer to a separate array of fields
180 allows all types to have the same size, which is useful
181 because we can allocate the space for a type before
182 we know what to put in it. */
187 /* Position of this field, counting in bits from start of
188 containing structure. For a function type, this is the
189 position in the argument list of this argument.
190 For a range bound or enum value, this is the value itself. */
194 /* Size of this field, in bits, or zero if not packed.
195 For an unpacked field, the field's type's length
196 says how many bytes the field occupies. */
200 /* In a struct or enum type, type of this field.
201 In a function type, type of this argument.
202 In an array type, the domain-type of the array. */
206 /* Name of field, value or argument.
207 NULL for range bounds and array domains. */
213 /* For types with virtual functions, VPTR_BASETYPE is the base class which
214 defined the virtual function table pointer. VPTR_FIELDNO is
215 the field number of that pointer in the structure.
217 For types that are pointer to member types, VPTR_BASETYPE
218 is the type that this pointer is a member of.
222 struct type
*vptr_basetype
;
226 /* Slot to point to additional language-specific fields of this type. */
231 /* ARG_TYPES is for TYPE_CODE_METHOD and TYPE_CODE_FUNC. */
233 struct type
**arg_types
;
235 /* CPLUS_STUFF is for TYPE_CODE_STRUCT. */
237 struct cplus_struct_type
*cplus_stuff
;
242 #define NULL_TYPE ((struct type *) 0)
244 /* C++ language-specific information for TYPE_CODE_STRUCT and TYPE_CODE_UNION
247 struct cplus_struct_type
250 B_TYPE
*virtual_field_bits
; /* if base class is virtual */
252 B_TYPE
*private_field_bits
;
254 B_TYPE
*protected_field_bits
;
256 /* Number of methods described for this type */
260 /* Number of base classes this type derives from. */
264 /* Number of methods described for this type plus all the
265 methods that it derives from. */
267 int nfn_fields_total
;
269 /* For classes, structures, and unions, a description of each field,
270 which consists of an overloaded name, followed by the types of
271 arguments that the method expects, and then the name after it
272 has been renamed to make it distinct. */
277 /* The overloaded name. */
281 /* The number of methods with this name. */
285 /* The list of methods. */
290 /* The return value of the method */
294 /* The argument list */
298 /* The name after it has been processed */
302 /* For virtual functions. */
303 /* First baseclass that defines this virtual function. */
305 struct type
*fcontext
;
307 unsigned int is_const
: 1;
308 unsigned int is_volatile
: 1;
309 unsigned int is_private
: 1;
310 unsigned int is_protected
: 1;
311 unsigned int is_stub
: 1;
312 unsigned int dummy
: 3;
314 /* Index into that baseclass's virtual function table,
315 minus 2; else if static: VOFFSET_STATIC; else: 0. */
317 unsigned voffset
: 24;
319 # define VOFFSET_STATIC 1
325 unsigned char via_protected
;
327 unsigned char via_public
;
330 /* The default value of TYPE_CPLUS_SPECIFIC(T) points to the
331 this shared static structure. */
333 extern const struct cplus_struct_type cplus_struct_default
;
336 allocate_cplus_struct_type
PARAMS ((struct type
*));
338 #define INIT_CPLUS_SPECIFIC(type) \
339 (TYPE_CPLUS_SPECIFIC(type)=(struct cplus_struct_type*)&cplus_struct_default)
340 #define ALLOCATE_CPLUS_STRUCT_TYPE(type) allocate_cplus_struct_type (type)
341 #define HAVE_CPLUS_STRUCT(type) \
342 (TYPE_CPLUS_SPECIFIC(type) != &cplus_struct_default)
344 #define TYPE_NAME(thistype) (thistype)->name
345 #define TYPE_TARGET_TYPE(thistype) (thistype)->target_type
346 #define TYPE_POINTER_TYPE(thistype) (thistype)->pointer_type
347 #define TYPE_REFERENCE_TYPE(thistype) (thistype)->reference_type
348 #define TYPE_FUNCTION_TYPE(thistype) (thistype)->function_type
349 #define TYPE_LENGTH(thistype) (thistype)->length
350 #define TYPE_OBJFILE(thistype) (thistype)->objfile
351 #define TYPE_FLAGS(thistype) (thistype)->flags
352 #define TYPE_UNSIGNED(thistype) ((thistype)->flags & TYPE_FLAG_UNSIGNED)
353 #define TYPE_CODE(thistype) (thistype)->code
354 #define TYPE_NFIELDS(thistype) (thistype)->nfields
355 #define TYPE_FIELDS(thistype) (thistype)->fields
359 #define TYPE_VPTR_BASETYPE(thistype) (thistype)->vptr_basetype
360 #define TYPE_DOMAIN_TYPE(thistype) (thistype)->vptr_basetype
361 #define TYPE_VPTR_FIELDNO(thistype) (thistype)->vptr_fieldno
362 #define TYPE_FN_FIELDS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->fn_fields
363 #define TYPE_NFN_FIELDS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->nfn_fields
364 #define TYPE_NFN_FIELDS_TOTAL(thistype) TYPE_CPLUS_SPECIFIC(thistype)->nfn_fields_total
365 #define TYPE_TYPE_SPECIFIC(thistype) (thistype)->type_specific
366 #define TYPE_ARG_TYPES(thistype) (thistype)->type_specific.arg_types
367 #define TYPE_CPLUS_SPECIFIC(thistype) (thistype)->type_specific.cplus_stuff
368 #define TYPE_BASECLASS(thistype,index) (thistype)->fields[index].type
369 #define TYPE_N_BASECLASSES(thistype) TYPE_CPLUS_SPECIFIC(thistype)->n_baseclasses
370 #define TYPE_BASECLASS_NAME(thistype,index) (thistype)->fields[index].name
371 #define TYPE_BASECLASS_BITPOS(thistype,index) (thistype)->fields[index].bitpos
372 #define BASETYPE_VIA_PUBLIC(thistype, index) (!TYPE_FIELD_PRIVATE(thistype, index))
373 #define BASETYPE_VIA_VIRTUAL(thistype, index) \
374 B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (index))
376 #define TYPE_FIELD(thistype, n) (thistype)->fields[n]
377 #define TYPE_FIELD_TYPE(thistype, n) (thistype)->fields[n].type
378 #define TYPE_FIELD_NAME(thistype, n) (thistype)->fields[n].name
379 #define TYPE_FIELD_VALUE(thistype, n) (* (int*) &(thistype)->fields[n].type)
380 #define TYPE_FIELD_BITPOS(thistype, n) (thistype)->fields[n].bitpos
381 #define TYPE_FIELD_BITSIZE(thistype, n) (thistype)->fields[n].bitsize
382 #define TYPE_FIELD_PACKED(thistype, n) (thistype)->fields[n].bitsize
384 #define TYPE_FIELD_PRIVATE_BITS(thistype) \
385 TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits
386 #define TYPE_FIELD_PROTECTED_BITS(thistype) \
387 TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits
388 #define TYPE_FIELD_VIRTUAL_BITS(thistype) \
389 TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits
390 #define SET_TYPE_FIELD_PRIVATE(thistype, n) \
391 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n))
392 #define SET_TYPE_FIELD_PROTECTED(thistype, n) \
393 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n))
394 #define SET_TYPE_FIELD_VIRTUAL(thistype, n) \
395 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n))
396 #define TYPE_FIELD_PRIVATE(thistype, n) \
397 (TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits == NULL ? 0 \
398 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n)))
399 #define TYPE_FIELD_PROTECTED(thistype, n) \
400 (TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits == NULL ? 0 \
401 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n)))
402 #define TYPE_FIELD_VIRTUAL(thistype, n) \
403 B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n))
405 #define TYPE_FIELD_STATIC(thistype, n) ((thistype)->fields[n].bitpos == -1)
406 #define TYPE_FIELD_STATIC_PHYSNAME(thistype, n) ((char *)(thistype)->fields[n].bitsize)
408 #define TYPE_FN_FIELDLISTS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists
409 #define TYPE_FN_FIELDLIST(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n]
410 #define TYPE_FN_FIELDLIST1(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].fn_fields
411 #define TYPE_FN_FIELDLIST_NAME(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].name
412 #define TYPE_FN_FIELDLIST_LENGTH(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].length
414 #define TYPE_FN_FIELD(thisfn, n) (thisfn)[n]
415 #define TYPE_FN_FIELD_NAME(thisfn, n) (thisfn)[n].name
416 #define TYPE_FN_FIELD_TYPE(thisfn, n) (thisfn)[n].type
417 #define TYPE_FN_FIELD_ARGS(thisfn, n) TYPE_ARG_TYPES ((thisfn)[n].type)
418 #define TYPE_FN_FIELD_PHYSNAME(thisfn, n) (thisfn)[n].physname
419 #define TYPE_FN_FIELD_VIRTUAL_P(thisfn, n) ((thisfn)[n].voffset > 1)
420 #define TYPE_FN_FIELD_STATIC_P(thisfn, n) ((thisfn)[n].voffset == VOFFSET_STATIC)
421 #define TYPE_FN_FIELD_VOFFSET(thisfn, n) ((thisfn)[n].voffset-2)
422 #define TYPE_FN_FIELD_FCONTEXT(thisfn, n) ((thisfn)[n].fcontext)
423 #define TYPE_FN_FIELD_STUB(thisfn, n) ((thisfn)[n].is_stub)
424 #define TYPE_FN_FIELD_PRIVATE(thisfn, n) ((thisfn)[n].is_private)
425 #define TYPE_FN_FIELD_PROTECTED(thisfn, n) ((thisfn)[n].is_protected)
427 extern struct type
*builtin_type_void
;
428 extern struct type
*builtin_type_char
;
429 extern struct type
*builtin_type_short
;
430 extern struct type
*builtin_type_int
;
431 extern struct type
*builtin_type_long
;
432 extern struct type
*builtin_type_signed_char
;
433 extern struct type
*builtin_type_unsigned_char
;
434 extern struct type
*builtin_type_unsigned_short
;
435 extern struct type
*builtin_type_unsigned_int
;
436 extern struct type
*builtin_type_unsigned_long
;
437 extern struct type
*builtin_type_float
;
438 extern struct type
*builtin_type_double
;
439 extern struct type
*builtin_type_long_double
;
440 extern struct type
*builtin_type_complex
;
441 extern struct type
*builtin_type_double_complex
;
443 /* This type represents a type that was unrecognized in symbol
446 extern struct type
*builtin_type_error
;
448 extern struct type
*builtin_type_long_long
;
449 extern struct type
*builtin_type_unsigned_long_long
;
453 extern struct type
*builtin_type_m2_char
;
454 extern struct type
*builtin_type_m2_int
;
455 extern struct type
*builtin_type_m2_card
;
456 extern struct type
*builtin_type_m2_real
;
457 extern struct type
*builtin_type_m2_bool
;
459 /* LONG_LONG is defined if the host has "long long". */
463 #define BUILTIN_TYPE_LONGEST builtin_type_long_long
464 #define BUILTIN_TYPE_UNSIGNED_LONGEST builtin_type_unsigned_long_long
466 #else /* not LONG_LONG. */
468 #define BUILTIN_TYPE_LONGEST builtin_type_long
469 #define BUILTIN_TYPE_UNSIGNED_LONGEST builtin_type_unsigned_long
471 #endif /* not LONG_LONG. */
473 /* Maximum and minimum values of built-in types */
475 #define MAX_OF_TYPE(t) \
476 TYPE_UNSIGNED(t) ? UMAX_OF_SIZE(TYPE_LENGTH(t)) \
477 : MAX_OF_SIZE(TYPE_LENGTH(t))
479 #define MIN_OF_TYPE(t) \
480 TYPE_UNSIGNED(t) ? UMIN_OF_SIZE(TYPE_LENGTH(t)) \
481 : MIN_OF_SIZE(TYPE_LENGTH(t))
484 alloc_type
PARAMS ((struct objfile
*));
487 init_type
PARAMS ((enum type_code
, int, int, char *, struct objfile
*));
490 lookup_reference_type
PARAMS ((struct type
*));
493 lookup_member_type
PARAMS ((struct type
*, struct type
*));
496 smash_to_method_type
PARAMS ((struct type
*, struct type
*, struct type
*,
500 smash_to_member_type
PARAMS ((struct type
*, struct type
*, struct type
*));
503 allocate_stub_method
PARAMS ((struct type
*));
506 type_name_no_tag
PARAMS ((const struct type
*));
509 lookup_struct_elt_type
PARAMS ((struct type
*, char *, int));
512 lookup_pointer_type
PARAMS ((struct type
*));
515 lookup_function_type
PARAMS ((struct type
*));
518 create_array_type
PARAMS ((struct type
*, int));
521 lookup_unsigned_typename
PARAMS ((char *));
524 check_stub_type
PARAMS ((struct type
*));
527 check_stub_method
PARAMS ((struct type
*, int, int));
530 lookup_primitive_typename
PARAMS ((char *));
533 gdb_mangle_name
PARAMS ((struct type
*, int, int));
536 builtin_type
PARAMS ((char **));
539 error_type
PARAMS ((char **));
542 lookup_typename
PARAMS ((char *, struct block
*, int));
545 lookup_template_type
PARAMS ((char *, struct type
*, struct block
*));
548 lookup_fundamental_type
PARAMS ((struct objfile
*, int));
551 fill_in_vptr_fieldno
PARAMS ((struct type
*));
556 print_scalar_formatted
PARAMS ((char *, struct type
*, int, int, FILE *));
558 #endif /* GDBTYPES_H */