1 /* Support routines for manipulating internal types 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. */
28 #include "expression.h"
33 #include "complaints.h"
35 /* These variables point to the objects
36 representing the predefined C data types. */
38 struct type
*builtin_type_void
;
39 struct type
*builtin_type_char
;
40 struct type
*builtin_type_short
;
41 struct type
*builtin_type_int
;
42 struct type
*builtin_type_long
;
43 struct type
*builtin_type_long_long
;
44 struct type
*builtin_type_signed_char
;
45 struct type
*builtin_type_unsigned_char
;
46 struct type
*builtin_type_unsigned_short
;
47 struct type
*builtin_type_unsigned_int
;
48 struct type
*builtin_type_unsigned_long
;
49 struct type
*builtin_type_unsigned_long_long
;
50 struct type
*builtin_type_float
;
51 struct type
*builtin_type_double
;
52 struct type
*builtin_type_long_double
;
53 struct type
*builtin_type_complex
;
54 struct type
*builtin_type_double_complex
;
55 struct type
*builtin_type_string
;
57 /* Alloc a new type structure and fill it with some defaults. If
58 OBJFILE is non-NULL, then allocate the space for the type structure
59 in that objfile's type_obstack. */
63 struct objfile
*objfile
;
65 register struct type
*type
;
67 /* Alloc the structure and start off with all fields zeroed. */
71 type
= (struct type
*) xmalloc (sizeof (struct type
));
75 type
= (struct type
*) obstack_alloc (&objfile
-> type_obstack
,
76 sizeof (struct type
));
78 memset ((char *) type
, 0, sizeof (struct type
));
80 /* Initialize the fields that might not be zero. */
82 TYPE_CODE (type
) = TYPE_CODE_UNDEF
;
83 TYPE_OBJFILE (type
) = objfile
;
84 TYPE_VPTR_FIELDNO (type
) = -1;
89 /* Lookup a pointer to a type TYPE. TYPEPTR, if nonzero, points
90 to a pointer to memory where the pointer type should be stored.
91 If *TYPEPTR is zero, update it to point to the pointer type we return.
92 We allocate new memory if needed. */
95 make_pointer_type (type
, typeptr
)
97 struct type
**typeptr
;
99 register struct type
*ntype
; /* New type */
100 struct objfile
*objfile
;
102 ntype
= TYPE_POINTER_TYPE (type
);
106 return ntype
; /* Don't care about alloc, and have new type. */
107 else if (*typeptr
== 0)
109 *typeptr
= ntype
; /* Tracking alloc, and we have new type. */
113 if (typeptr
== 0 || *typeptr
== 0) /* We'll need to allocate one. */
115 ntype
= alloc_type (TYPE_OBJFILE (type
));
119 else /* We have storage, but need to reset it. */
122 objfile
= TYPE_OBJFILE (ntype
);
123 memset ((char *) ntype
, 0, sizeof (struct type
));
124 TYPE_OBJFILE (ntype
) = objfile
;
127 TYPE_TARGET_TYPE (ntype
) = type
;
128 TYPE_POINTER_TYPE (type
) = ntype
;
130 /* FIXME! Assume the machine has only one representation for pointers! */
132 TYPE_LENGTH (ntype
) = TARGET_PTR_BIT
/ TARGET_CHAR_BIT
;
133 TYPE_CODE (ntype
) = TYPE_CODE_PTR
;
135 /* pointers are unsigned */
136 TYPE_FLAGS (ntype
) |= TYPE_FLAG_UNSIGNED
;
138 if (!TYPE_POINTER_TYPE (type
)) /* Remember it, if don't have one. */
139 TYPE_POINTER_TYPE (type
) = ntype
;
144 /* Given a type TYPE, return a type of pointers to that type.
145 May need to construct such a type if this is the first use. */
148 lookup_pointer_type (type
)
151 return make_pointer_type (type
, (struct type
**)0);
154 /* Lookup a C++ `reference' to a type TYPE. TYPEPTR, if nonzero, points
155 to a pointer to memory where the reference type should be stored.
156 If *TYPEPTR is zero, update it to point to the reference type we return.
157 We allocate new memory if needed. */
160 make_reference_type (type
, typeptr
)
162 struct type
**typeptr
;
164 register struct type
*ntype
; /* New type */
165 struct objfile
*objfile
;
167 ntype
= TYPE_REFERENCE_TYPE (type
);
171 return ntype
; /* Don't care about alloc, and have new type. */
172 else if (*typeptr
== 0)
174 *typeptr
= ntype
; /* Tracking alloc, and we have new type. */
178 if (typeptr
== 0 || *typeptr
== 0) /* We'll need to allocate one. */
180 ntype
= alloc_type (TYPE_OBJFILE (type
));
184 else /* We have storage, but need to reset it. */
187 objfile
= TYPE_OBJFILE (ntype
);
188 memset ((char *) ntype
, 0, sizeof (struct type
));
189 TYPE_OBJFILE (ntype
) = objfile
;
192 TYPE_TARGET_TYPE (ntype
) = type
;
193 TYPE_REFERENCE_TYPE (type
) = ntype
;
195 /* FIXME! Assume the machine has only one representation for references,
196 and that it matches the (only) representation for pointers! */
198 TYPE_LENGTH (ntype
) = TARGET_PTR_BIT
/ TARGET_CHAR_BIT
;
199 TYPE_CODE (ntype
) = TYPE_CODE_REF
;
201 if (!TYPE_REFERENCE_TYPE (type
)) /* Remember it, if don't have one. */
202 TYPE_REFERENCE_TYPE (type
) = ntype
;
207 /* Same as above, but caller doesn't care about memory allocation details. */
210 lookup_reference_type (type
)
213 return make_reference_type (type
, (struct type
**)0);
216 /* Lookup a function type that returns type TYPE. TYPEPTR, if nonzero, points
217 to a pointer to memory where the function type should be stored.
218 If *TYPEPTR is zero, update it to point to the function type we return.
219 We allocate new memory if needed. */
222 make_function_type (type
, typeptr
)
224 struct type
**typeptr
;
226 register struct type
*ntype
; /* New type */
227 struct objfile
*objfile
;
229 ntype
= TYPE_FUNCTION_TYPE (type
);
233 return ntype
; /* Don't care about alloc, and have new type. */
234 else if (*typeptr
== 0)
236 *typeptr
= ntype
; /* Tracking alloc, and we have new type. */
240 if (typeptr
== 0 || *typeptr
== 0) /* We'll need to allocate one. */
242 ntype
= alloc_type (TYPE_OBJFILE (type
));
246 else /* We have storage, but need to reset it. */
249 objfile
= TYPE_OBJFILE (ntype
);
250 memset ((char *) ntype
, 0, sizeof (struct type
));
251 TYPE_OBJFILE (ntype
) = objfile
;
254 TYPE_TARGET_TYPE (ntype
) = type
;
255 TYPE_FUNCTION_TYPE (type
) = ntype
;
257 TYPE_LENGTH (ntype
) = 1;
258 TYPE_CODE (ntype
) = TYPE_CODE_FUNC
;
260 if (!TYPE_FUNCTION_TYPE (type
)) /* Remember it, if don't have one. */
261 TYPE_FUNCTION_TYPE (type
) = ntype
;
267 /* Given a type TYPE, return a type of functions that return that type.
268 May need to construct such a type if this is the first use. */
271 lookup_function_type (type
)
274 return make_function_type (type
, (struct type
**)0);
277 /* Implement direct support for MEMBER_TYPE in GNU C++.
278 May need to construct such a type if this is the first use.
279 The TYPE is the type of the member. The DOMAIN is the type
280 of the aggregate that the member belongs to. */
283 lookup_member_type (type
, domain
)
287 register struct type
*mtype
;
289 mtype
= alloc_type (TYPE_OBJFILE (type
));
290 smash_to_member_type (mtype
, domain
, type
);
294 /* Allocate a stub method whose return type is TYPE.
295 This apparently happens for speed of symbol reading, since parsing
296 out the arguments to the method is cpu-intensive, the way we are doing
297 it. So, we will fill in arguments later.
298 This always returns a fresh type. */
301 allocate_stub_method (type
)
306 mtype
= alloc_type (TYPE_OBJFILE (type
));
307 TYPE_TARGET_TYPE (mtype
) = type
;
308 /* _DOMAIN_TYPE (mtype) = unknown yet */
309 /* _ARG_TYPES (mtype) = unknown yet */
310 TYPE_FLAGS (mtype
) = TYPE_FLAG_STUB
;
311 TYPE_CODE (mtype
) = TYPE_CODE_METHOD
;
312 TYPE_LENGTH (mtype
) = 1;
316 /* Create a range type using either a blank type supplied in RESULT_TYPE,
317 or creating a new type, inheriting the objfile from INDEX_TYPE.
319 Indices will be of type INDEX_TYPE, and will range from LOW_BOUND to
320 HIGH_BOUND, inclusive.
322 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
323 sure it is TYPE_CODE_UNDEF before we bash it into a range type? */
326 create_range_type (result_type
, index_type
, low_bound
, high_bound
)
327 struct type
*result_type
;
328 struct type
*index_type
;
332 if (result_type
== NULL
)
334 result_type
= alloc_type (TYPE_OBJFILE (index_type
));
336 TYPE_CODE (result_type
) = TYPE_CODE_RANGE
;
337 TYPE_TARGET_TYPE (result_type
) = index_type
;
338 TYPE_LENGTH (result_type
) = TYPE_LENGTH (index_type
);
339 TYPE_NFIELDS (result_type
) = 2;
340 TYPE_FIELDS (result_type
) = (struct field
*)
341 TYPE_ALLOC (result_type
, 2 * sizeof (struct field
));
342 memset (TYPE_FIELDS (result_type
), 0, 2 * sizeof (struct field
));
343 TYPE_FIELD_BITPOS (result_type
, 0) = low_bound
;
344 TYPE_FIELD_BITPOS (result_type
, 1) = high_bound
;
345 TYPE_FIELD_TYPE (result_type
, 0) = builtin_type_int
; /* FIXME */
346 TYPE_FIELD_TYPE (result_type
, 1) = builtin_type_int
; /* FIXME */
348 return (result_type
);
352 /* Create an array type using either a blank type supplied in RESULT_TYPE,
353 or creating a new type, inheriting the objfile from RANGE_TYPE.
355 Elements will be of type ELEMENT_TYPE, the indices will be of type
358 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
359 sure it is TYPE_CODE_UNDEF before we bash it into an array type? */
362 create_array_type (result_type
, element_type
, range_type
)
363 struct type
*result_type
;
364 struct type
*element_type
;
365 struct type
*range_type
;
370 if (TYPE_CODE (range_type
) != TYPE_CODE_RANGE
)
372 /* FIXME: We only handle range types at the moment. Complain and
373 create a dummy range type to use. */
374 warning ("internal error: array index type must be a range type");
375 range_type
= lookup_fundamental_type (TYPE_OBJFILE (range_type
),
377 range_type
= create_range_type ((struct type
*) NULL
, range_type
, 0, 0);
379 if (result_type
== NULL
)
381 result_type
= alloc_type (TYPE_OBJFILE (range_type
));
383 TYPE_CODE (result_type
) = TYPE_CODE_ARRAY
;
384 TYPE_TARGET_TYPE (result_type
) = element_type
;
385 low_bound
= TYPE_FIELD_BITPOS (range_type
, 0);
386 high_bound
= TYPE_FIELD_BITPOS (range_type
, 1);
387 TYPE_LENGTH (result_type
) =
388 TYPE_LENGTH (element_type
) * (high_bound
- low_bound
+ 1);
389 TYPE_NFIELDS (result_type
) = 1;
390 TYPE_FIELDS (result_type
) =
391 (struct field
*) TYPE_ALLOC (result_type
, sizeof (struct field
));
392 memset (TYPE_FIELDS (result_type
), 0, sizeof (struct field
));
393 TYPE_FIELD_TYPE (result_type
, 0) = range_type
;
394 TYPE_VPTR_FIELDNO (result_type
) = -1;
396 return (result_type
);
399 /* Create a string type using either a blank type supplied in RESULT_TYPE,
400 or creating a new type. String types are similar enough to array of
401 char types that we can use create_array_type to build the basic type
402 and then bash it into a string type.
404 For fixed length strings, the range type contains 0 as the lower
405 bound and the length of the string minus one as the upper bound.
407 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
408 sure it is TYPE_CODE_UNDEF before we bash it into a string type? */
411 create_string_type (result_type
, range_type
)
412 struct type
*result_type
;
413 struct type
*range_type
;
415 result_type
= create_array_type (result_type
, builtin_type_char
, range_type
);
416 TYPE_CODE (result_type
) = TYPE_CODE_STRING
;
417 return (result_type
);
420 /* Smash TYPE to be a type of members of DOMAIN with type TO_TYPE.
421 A MEMBER is a wierd thing -- it amounts to a typed offset into
422 a struct, e.g. "an int at offset 8". A MEMBER TYPE doesn't
423 include the offset (that's the value of the MEMBER itself), but does
424 include the structure type into which it points (for some reason).
426 When "smashing" the type, we preserve the objfile that the
427 old type pointed to, since we aren't changing where the type is actually
431 smash_to_member_type (type
, domain
, to_type
)
434 struct type
*to_type
;
436 struct objfile
*objfile
;
438 objfile
= TYPE_OBJFILE (type
);
440 memset ((char *) type
, 0, sizeof (struct type
));
441 TYPE_OBJFILE (type
) = objfile
;
442 TYPE_TARGET_TYPE (type
) = to_type
;
443 TYPE_DOMAIN_TYPE (type
) = domain
;
444 TYPE_LENGTH (type
) = 1; /* In practice, this is never needed. */
445 TYPE_CODE (type
) = TYPE_CODE_MEMBER
;
448 /* Smash TYPE to be a type of method of DOMAIN with type TO_TYPE.
449 METHOD just means `function that gets an extra "this" argument'.
451 When "smashing" the type, we preserve the objfile that the
452 old type pointed to, since we aren't changing where the type is actually
456 smash_to_method_type (type
, domain
, to_type
, args
)
459 struct type
*to_type
;
462 struct objfile
*objfile
;
464 objfile
= TYPE_OBJFILE (type
);
466 memset ((char *) type
, 0, sizeof (struct type
));
467 TYPE_OBJFILE (type
) = objfile
;
468 TYPE_TARGET_TYPE (type
) = to_type
;
469 TYPE_DOMAIN_TYPE (type
) = domain
;
470 TYPE_ARG_TYPES (type
) = args
;
471 TYPE_LENGTH (type
) = 1; /* In practice, this is never needed. */
472 TYPE_CODE (type
) = TYPE_CODE_METHOD
;
475 /* Return a typename for a struct/union/enum type without "struct ",
476 "union ", or "enum ". If the type has a NULL name, return NULL. */
479 type_name_no_tag (type
)
480 register const struct type
*type
;
482 if (TYPE_TAG_NAME (type
) != NULL
)
483 return TYPE_TAG_NAME (type
);
485 /* Is there code which expects this to return the name if there is no
486 tag name? My guess is that this is mainly used for C++ in cases where
487 the two will always be the same. */
488 return TYPE_NAME (type
);
491 /* Lookup a primitive type named NAME.
492 Return zero if NAME is not a primitive type.*/
495 lookup_primitive_typename (name
)
498 struct type
** const *p
;
500 for (p
= current_language
-> la_builtin_type_vector
; *p
!= NULL
; p
++)
502 if (STREQ ((**p
) -> name
, name
))
510 /* Lookup a typedef or primitive type named NAME,
511 visible in lexical block BLOCK.
512 If NOERR is nonzero, return zero if NAME is not suitably defined. */
515 lookup_typename (name
, block
, noerr
)
520 register struct symbol
*sym
;
521 register struct type
*tmp
;
523 sym
= lookup_symbol (name
, block
, VAR_NAMESPACE
, 0, (struct symtab
**) NULL
);
524 if (sym
== NULL
|| SYMBOL_CLASS (sym
) != LOC_TYPEDEF
)
526 tmp
= lookup_primitive_typename (name
);
531 else if (!tmp
&& noerr
)
537 error ("No type named %s.", name
);
540 return (SYMBOL_TYPE (sym
));
544 lookup_unsigned_typename (name
)
547 char *uns
= alloca (strlen (name
) + 10);
549 strcpy (uns
, "unsigned ");
550 strcpy (uns
+ 9, name
);
551 return (lookup_typename (uns
, (struct block
*) NULL
, 0));
555 lookup_signed_typename (name
)
559 char *uns
= alloca (strlen (name
) + 8);
561 strcpy (uns
, "signed ");
562 strcpy (uns
+ 7, name
);
563 t
= lookup_typename (uns
, (struct block
*) NULL
, 1);
564 /* If we don't find "signed FOO" just try again with plain "FOO". */
567 return lookup_typename (name
, (struct block
*) NULL
, 0);
570 /* Lookup a structure type named "struct NAME",
571 visible in lexical block BLOCK. */
574 lookup_struct (name
, block
)
578 register struct symbol
*sym
;
580 sym
= lookup_symbol (name
, block
, STRUCT_NAMESPACE
, 0,
581 (struct symtab
**) NULL
);
585 error ("No struct type named %s.", name
);
587 if (TYPE_CODE (SYMBOL_TYPE (sym
)) != TYPE_CODE_STRUCT
)
589 error ("This context has class, union or enum %s, not a struct.", name
);
591 return (SYMBOL_TYPE (sym
));
594 /* Lookup a union type named "union NAME",
595 visible in lexical block BLOCK. */
598 lookup_union (name
, block
)
602 register struct symbol
*sym
;
604 sym
= lookup_symbol (name
, block
, STRUCT_NAMESPACE
, 0,
605 (struct symtab
**) NULL
);
609 error ("No union type named %s.", name
);
611 if (TYPE_CODE (SYMBOL_TYPE (sym
)) != TYPE_CODE_UNION
)
613 error ("This context has class, struct or enum %s, not a union.", name
);
615 return (SYMBOL_TYPE (sym
));
618 /* Lookup an enum type named "enum NAME",
619 visible in lexical block BLOCK. */
622 lookup_enum (name
, block
)
626 register struct symbol
*sym
;
628 sym
= lookup_symbol (name
, block
, STRUCT_NAMESPACE
, 0,
629 (struct symtab
**) NULL
);
632 error ("No enum type named %s.", name
);
634 if (TYPE_CODE (SYMBOL_TYPE (sym
)) != TYPE_CODE_ENUM
)
636 error ("This context has class, struct or union %s, not an enum.", name
);
638 return (SYMBOL_TYPE (sym
));
641 /* Lookup a template type named "template NAME<TYPE>",
642 visible in lexical block BLOCK. */
645 lookup_template_type (name
, type
, block
)
651 char *nam
= (char*) alloca(strlen(name
) + strlen(type
->name
) + 4);
654 strcat (nam
, type
->name
);
655 strcat (nam
, " >"); /* FIXME, extra space still introduced in gcc? */
657 sym
= lookup_symbol (nam
, block
, VAR_NAMESPACE
, 0, (struct symtab
**)NULL
);
661 error ("No template type named %s.", name
);
663 if (TYPE_CODE (SYMBOL_TYPE (sym
)) != TYPE_CODE_STRUCT
)
665 error ("This context has class, union or enum %s, not a struct.", name
);
667 return (SYMBOL_TYPE (sym
));
670 /* Given a type TYPE, lookup the type of the component of type named NAME.
672 TYPE can be either a struct or union, or a pointer or reference to a struct or
673 union. If it is a pointer or reference, its target type is automatically used.
674 Thus '.' and '->' are interchangable, as specified for the definitions of the
675 expression element types STRUCTOP_STRUCT and STRUCTOP_PTR.
677 If NOERR is nonzero, return zero if NAME is not suitably defined.
678 If NAME is the name of a baseclass type, return that type. */
681 lookup_struct_elt_type (type
, name
, noerr
)
689 if (TYPE_CODE (type
) == TYPE_CODE_PTR
||
690 TYPE_CODE (type
) == TYPE_CODE_REF
)
691 type
= TYPE_TARGET_TYPE (type
);
693 if (TYPE_CODE (type
) != TYPE_CODE_STRUCT
&&
694 TYPE_CODE (type
) != TYPE_CODE_UNION
)
696 target_terminal_ours ();
698 fprintf (stderr
, "Type ");
699 type_print (type
, "", stderr
, -1);
700 error (" is not a structure or union type.");
703 check_stub_type (type
);
706 /* FIXME: This change put in by Michael seems incorrect for the case where
707 the structure tag name is the same as the member name. I.E. when doing
708 "ptype bell->bar" for "struct foo { int bar; int foo; } bell;"
710 typename
= type_name_no_tag (type
);
711 if (typename
!= NULL
&& STREQ (typename
, name
))
715 for (i
= TYPE_NFIELDS (type
) - 1; i
>= TYPE_N_BASECLASSES (type
); i
--)
717 char *t_field_name
= TYPE_FIELD_NAME (type
, i
);
719 if (t_field_name
&& STREQ (t_field_name
, name
))
721 return TYPE_FIELD_TYPE (type
, i
);
725 /* OK, it's not in this class. Recursively check the baseclasses. */
726 for (i
= TYPE_N_BASECLASSES (type
) - 1; i
>= 0; i
--)
730 t
= lookup_struct_elt_type (TYPE_BASECLASS (type
, i
), name
, noerr
);
742 target_terminal_ours ();
744 fprintf (stderr
, "Type ");
745 type_print (type
, "", stderr
, -1);
746 fprintf (stderr
, " has no component named ");
747 fputs_filtered (name
, stderr
);
749 return (struct type
*)-1; /* For lint */
752 /* This function is really horrible, but to avoid it, there would need
753 to be more filling in of forward references. */
756 fill_in_vptr_fieldno (type
)
759 if (TYPE_VPTR_FIELDNO (type
) < 0)
763 /* We must start at zero in case the first (and only) baseclass is
764 virtual (and hence we cannot share the table pointer). */
765 for (i
= 0; i
< TYPE_N_BASECLASSES (type
); i
++)
767 fill_in_vptr_fieldno (TYPE_BASECLASS (type
, i
));
768 if (TYPE_VPTR_FIELDNO (TYPE_BASECLASS (type
, i
)) >= 0)
770 TYPE_VPTR_FIELDNO (type
)
771 = TYPE_VPTR_FIELDNO (TYPE_BASECLASS (type
, i
));
772 TYPE_VPTR_BASETYPE (type
)
773 = TYPE_VPTR_BASETYPE (TYPE_BASECLASS (type
, i
));
780 /* Added by Bryan Boreham, Kewill, Sun Sep 17 18:07:17 1989.
782 If this is a stubbed struct (i.e. declared as struct foo *), see if
783 we can find a full definition in some other file. If so, copy this
784 definition, so we can use it in future. If not, set a flag so we
785 don't waste too much time in future. (FIXME, this doesn't seem
788 This used to be coded as a macro, but I don't think it is called
789 often enough to merit such treatment.
792 struct complaint stub_noname_complaint
=
793 {"stub type has NULL name", 0, 0};
796 check_stub_type (type
)
799 if (TYPE_FLAGS(type
) & TYPE_FLAG_STUB
)
801 char* name
= type_name_no_tag (type
);
805 complain (&stub_noname_complaint
);
808 sym
= lookup_symbol (name
, 0, STRUCT_NAMESPACE
, 0,
809 (struct symtab
**) NULL
);
812 memcpy ((char *)type
, (char *)SYMBOL_TYPE(sym
), sizeof (struct type
));
817 /* Ugly hack to convert method stubs into method types.
819 He ain't kiddin'. This demangles the name of the method into a string
820 including argument types, parses out each argument type, generates
821 a string casting a zero to that type, evaluates the string, and stuffs
822 the resulting type into an argtype vector!!! Then it knows the type
823 of the whole function (including argument types for overloading),
824 which info used to be in the stab's but was removed to hack back
825 the space required for them. */
828 check_stub_method (type
, i
, j
)
834 char *mangled_name
= gdb_mangle_name (type
, i
, j
);
835 char *demangled_name
= cplus_demangle (mangled_name
,
836 DMGL_PARAMS
| DMGL_ANSI
);
837 char *argtypetext
, *p
;
838 int depth
= 0, argcount
= 1;
839 struct type
**argtypes
;
842 if (demangled_name
== NULL
)
844 error ("Internal: Cannot demangle mangled name `%s'.", mangled_name
);
847 /* Now, read in the parameters that define this type. */
848 argtypetext
= strchr (demangled_name
, '(') + 1;
860 else if (*p
== ',' && depth
== 0)
868 /* We need two more slots: one for the THIS pointer, and one for the
869 NULL [...] or void [end of arglist]. */
871 argtypes
= (struct type
**)
872 TYPE_ALLOC (type
, (argcount
+ 2) * sizeof (struct type
*));
874 argtypes
[0] = lookup_pointer_type (type
);
877 if (*p
!= ')') /* () means no args, skip while */
882 if (depth
<= 0 && (*p
== ',' || *p
== ')'))
885 parse_and_eval_type (argtypetext
, p
- argtypetext
);
903 if (p
[-2] != '.') /* Not '...' */
905 argtypes
[argcount
] = builtin_type_void
; /* List terminator */
909 argtypes
[argcount
] = NULL
; /* Ellist terminator */
912 free (demangled_name
);
914 f
= TYPE_FN_FIELDLIST1 (type
, i
);
915 TYPE_FN_FIELD_PHYSNAME (f
, j
) = mangled_name
;
917 /* Now update the old "stub" type into a real type. */
918 mtype
= TYPE_FN_FIELD_TYPE (f
, j
);
919 TYPE_DOMAIN_TYPE (mtype
) = type
;
920 TYPE_ARG_TYPES (mtype
) = argtypes
;
921 TYPE_FLAGS (mtype
) &= ~TYPE_FLAG_STUB
;
922 TYPE_FN_FIELD_STUB (f
, j
) = 0;
925 const struct cplus_struct_type cplus_struct_default
;
928 allocate_cplus_struct_type (type
)
931 if (!HAVE_CPLUS_STRUCT (type
))
933 TYPE_CPLUS_SPECIFIC (type
) = (struct cplus_struct_type
*)
934 TYPE_ALLOC (type
, sizeof (struct cplus_struct_type
));
935 *(TYPE_CPLUS_SPECIFIC(type
)) = cplus_struct_default
;
939 /* Helper function to initialize the standard scalar types.
941 If NAME is non-NULL and OBJFILE is non-NULL, then we make a copy
942 of the string pointed to by name in the type_obstack for that objfile,
943 and initialize the type name to that copy. There are places (mipsread.c
944 in particular, where init_type is called with a NULL value for NAME). */
947 init_type (code
, length
, flags
, name
, objfile
)
952 struct objfile
*objfile
;
954 register struct type
*type
;
956 type
= alloc_type (objfile
);
957 TYPE_CODE (type
) = code
;
958 TYPE_LENGTH (type
) = length
;
959 TYPE_FLAGS (type
) |= flags
;
960 if ((name
!= NULL
) && (objfile
!= NULL
))
963 obsavestring (name
, strlen (name
), &objfile
-> type_obstack
);
967 TYPE_NAME (type
) = name
;
972 if (code
== TYPE_CODE_STRUCT
|| code
== TYPE_CODE_UNION
)
974 INIT_CPLUS_SPECIFIC (type
);
979 /* Look up a fundamental type for the specified objfile.
980 May need to construct such a type if this is the first use.
982 Some object file formats (ELF, COFF, etc) do not define fundamental
983 types such as "int" or "double". Others (stabs for example), do
984 define fundamental types.
986 For the formats which don't provide fundamental types, gdb can create
987 such types, using defaults reasonable for the current language and
988 the current target machine.
990 NOTE: This routine is obsolescent. Each debugging format reader
991 should manage it's own fundamental types, either creating them from
992 suitable defaults or reading them from the debugging information,
993 whichever is appropriate. The DWARF reader has already been
994 fixed to do this. Once the other readers are fixed, this routine
995 will go away. Also note that fundamental types should be managed
996 on a compilation unit basis in a multi-language environment, not
997 on a linkage unit basis as is done here. */
1001 lookup_fundamental_type (objfile
, typeid)
1002 struct objfile
*objfile
;
1005 register struct type
**typep
;
1006 register int nbytes
;
1008 if (typeid < 0 || typeid >= FT_NUM_MEMBERS
)
1010 error ("internal error - invalid fundamental type id %d", typeid);
1013 /* If this is the first time we need a fundamental type for this objfile
1014 then we need to initialize the vector of type pointers. */
1016 if (objfile
-> fundamental_types
== NULL
)
1018 nbytes
= FT_NUM_MEMBERS
* sizeof (struct type
*);
1019 objfile
-> fundamental_types
= (struct type
**)
1020 obstack_alloc (&objfile
-> type_obstack
, nbytes
);
1021 memset ((char *) objfile
-> fundamental_types
, 0, nbytes
);
1024 /* Look for this particular type in the fundamental type vector. If one is
1025 not found, create and install one appropriate for the current language. */
1027 typep
= objfile
-> fundamental_types
+ typeid;
1030 *typep
= create_fundamental_type (objfile
, typeid);
1036 #if MAINTENANCE_CMDS
1039 print_bit_vector (bits
, nbits
)
1045 for (bitno
= 0; bitno
< nbits
; bitno
++)
1047 if ((bitno
% 8) == 0)
1049 puts_filtered (" ");
1051 if (B_TST (bits
, bitno
))
1053 printf_filtered ("1");
1057 printf_filtered ("0");
1062 /* The args list is a strange beast. It is either terminated by a NULL
1063 pointer for varargs functions, or by a pointer to a TYPE_CODE_VOID
1064 type for normal fixed argcount functions. (FIXME someday)
1065 Also note the first arg should be the "this" pointer, we may not want to
1066 include it since we may get into a infinitely recursive situation. */
1069 print_arg_types (args
, spaces
)
1075 while (*args
!= NULL
)
1077 recursive_dump_type (*args
, spaces
+ 2);
1078 if ((*args
++) -> code
== TYPE_CODE_VOID
)
1087 dump_fn_fieldlists (type
, spaces
)
1095 printfi_filtered (spaces
, "fn_fieldlists 0x%x\n",
1096 TYPE_FN_FIELDLISTS (type
));
1097 for (method_idx
= 0; method_idx
< TYPE_NFN_FIELDS (type
); method_idx
++)
1099 f
= TYPE_FN_FIELDLIST1 (type
, method_idx
);
1100 printfi_filtered (spaces
+ 2, "[%d] name '%s' (0x%x) length %d\n",
1102 TYPE_FN_FIELDLIST_NAME (type
, method_idx
),
1103 TYPE_FN_FIELDLIST_NAME (type
, method_idx
),
1104 TYPE_FN_FIELDLIST_LENGTH (type
, method_idx
));
1105 for (overload_idx
= 0;
1106 overload_idx
< TYPE_FN_FIELDLIST_LENGTH (type
, method_idx
);
1109 printfi_filtered (spaces
+ 4, "[%d] physname '%s' (0x%x)\n",
1111 TYPE_FN_FIELD_PHYSNAME (f
, overload_idx
),
1112 TYPE_FN_FIELD_PHYSNAME (f
, overload_idx
));
1113 printfi_filtered (spaces
+ 8, "type 0x%x\n",
1114 TYPE_FN_FIELD_TYPE (f
, overload_idx
));
1115 recursive_dump_type (TYPE_FN_FIELD_TYPE (f
, overload_idx
),
1117 printfi_filtered (spaces
+ 8, "args 0x%x\n",
1118 TYPE_FN_FIELD_ARGS (f
, overload_idx
));
1119 print_arg_types (TYPE_FN_FIELD_ARGS (f
, overload_idx
), spaces
);
1120 printfi_filtered (spaces
+ 8, "fcontext 0x%x\n",
1121 TYPE_FN_FIELD_FCONTEXT (f
, overload_idx
));
1122 printfi_filtered (spaces
+ 8, "is_const %d\n",
1123 TYPE_FN_FIELD_CONST (f
, overload_idx
));
1124 printfi_filtered (spaces
+ 8, "is_volatile %d\n",
1125 TYPE_FN_FIELD_VOLATILE (f
, overload_idx
));
1126 printfi_filtered (spaces
+ 8, "is_private %d\n",
1127 TYPE_FN_FIELD_PRIVATE (f
, overload_idx
));
1128 printfi_filtered (spaces
+ 8, "is_protected %d\n",
1129 TYPE_FN_FIELD_PROTECTED (f
, overload_idx
));
1130 printfi_filtered (spaces
+ 8, "is_stub %d\n",
1131 TYPE_FN_FIELD_STUB (f
, overload_idx
));
1132 printfi_filtered (spaces
+ 8, "voffset %u\n",
1133 TYPE_FN_FIELD_VOFFSET (f
, overload_idx
));
1139 print_cplus_stuff (type
, spaces
)
1143 printfi_filtered (spaces
, "n_baseclasses %d\n",
1144 TYPE_N_BASECLASSES (type
));
1145 printfi_filtered (spaces
, "nfn_fields %d\n",
1146 TYPE_NFN_FIELDS (type
));
1147 printfi_filtered (spaces
, "nfn_fields_total %d\n",
1148 TYPE_NFN_FIELDS_TOTAL (type
));
1149 if (TYPE_N_BASECLASSES (type
) > 0)
1151 printfi_filtered (spaces
, "virtual_field_bits (%d bits at *0x%x)",
1152 TYPE_N_BASECLASSES (type
),
1153 TYPE_FIELD_VIRTUAL_BITS (type
));
1154 print_bit_vector (TYPE_FIELD_VIRTUAL_BITS (type
),
1155 TYPE_N_BASECLASSES (type
));
1156 puts_filtered ("\n");
1158 if (TYPE_NFIELDS (type
) > 0)
1160 if (TYPE_FIELD_PRIVATE_BITS (type
) != NULL
)
1162 printfi_filtered (spaces
, "private_field_bits (%d bits at *0x%x)",
1163 TYPE_NFIELDS (type
),
1164 TYPE_FIELD_PRIVATE_BITS (type
));
1165 print_bit_vector (TYPE_FIELD_PRIVATE_BITS (type
),
1166 TYPE_NFIELDS (type
));
1167 puts_filtered ("\n");
1169 if (TYPE_FIELD_PROTECTED_BITS (type
) != NULL
)
1171 printfi_filtered (spaces
, "protected_field_bits (%d bits at *0x%x)",
1172 TYPE_NFIELDS (type
),
1173 TYPE_FIELD_PROTECTED_BITS (type
));
1174 print_bit_vector (TYPE_FIELD_PROTECTED_BITS (type
),
1175 TYPE_NFIELDS (type
));
1176 puts_filtered ("\n");
1179 if (TYPE_NFN_FIELDS (type
) > 0)
1181 dump_fn_fieldlists (type
, spaces
);
1186 recursive_dump_type (type
, spaces
)
1192 printfi_filtered (spaces
, "type node 0x%x\n", type
);
1193 printfi_filtered (spaces
, "name '%s' (0x%x)\n", TYPE_NAME (type
),
1194 TYPE_NAME (type
) ? TYPE_NAME (type
) : "<NULL>");
1195 printfi_filtered (spaces
, "code 0x%x ", TYPE_CODE (type
));
1196 switch (TYPE_CODE (type
))
1198 case TYPE_CODE_UNDEF
:
1199 printf_filtered ("(TYPE_CODE_UNDEF)");
1202 printf_filtered ("(TYPE_CODE_PTR)");
1204 case TYPE_CODE_ARRAY
:
1205 printf_filtered ("(TYPE_CODE_ARRAY)");
1207 case TYPE_CODE_STRUCT
:
1208 printf_filtered ("(TYPE_CODE_STRUCT)");
1210 case TYPE_CODE_UNION
:
1211 printf_filtered ("(TYPE_CODE_UNION)");
1213 case TYPE_CODE_ENUM
:
1214 printf_filtered ("(TYPE_CODE_ENUM)");
1216 case TYPE_CODE_FUNC
:
1217 printf_filtered ("(TYPE_CODE_FUNC)");
1220 printf_filtered ("(TYPE_CODE_INT)");
1223 printf_filtered ("(TYPE_CODE_FLT)");
1225 case TYPE_CODE_VOID
:
1226 printf_filtered ("(TYPE_CODE_VOID)");
1229 printf_filtered ("(TYPE_CODE_SET)");
1231 case TYPE_CODE_RANGE
:
1232 printf_filtered ("(TYPE_CODE_RANGE)");
1234 case TYPE_CODE_STRING
:
1235 printf_filtered ("(TYPE_CODE_STRING)");
1237 case TYPE_CODE_ERROR
:
1238 printf_filtered ("(TYPE_CODE_ERROR)");
1240 case TYPE_CODE_MEMBER
:
1241 printf_filtered ("(TYPE_CODE_MEMBER)");
1243 case TYPE_CODE_METHOD
:
1244 printf_filtered ("(TYPE_CODE_METHOD)");
1247 printf_filtered ("(TYPE_CODE_REF)");
1249 case TYPE_CODE_CHAR
:
1250 printf_filtered ("(TYPE_CODE_CHAR)");
1252 case TYPE_CODE_BOOL
:
1253 printf_filtered ("(TYPE_CODE_BOOL)");
1256 printf_filtered ("(UNKNOWN TYPE CODE)");
1259 puts_filtered ("\n");
1260 printfi_filtered (spaces
, "length %d\n", TYPE_LENGTH (type
));
1261 printfi_filtered (spaces
, "objfile 0x%x\n", TYPE_OBJFILE (type
));
1262 printfi_filtered (spaces
, "target_type 0x%x\n", TYPE_TARGET_TYPE (type
));
1263 if (TYPE_TARGET_TYPE (type
) != NULL
)
1265 recursive_dump_type (TYPE_TARGET_TYPE (type
), spaces
+ 2);
1267 printfi_filtered (spaces
, "pointer_type 0x%x\n",
1268 TYPE_POINTER_TYPE (type
));
1269 printfi_filtered (spaces
, "reference_type 0x%x\n",
1270 TYPE_REFERENCE_TYPE (type
));
1271 printfi_filtered (spaces
, "function_type 0x%x\n",
1272 TYPE_FUNCTION_TYPE (type
));
1273 printfi_filtered (spaces
, "flags 0x%x", TYPE_FLAGS (type
));
1274 if (TYPE_FLAGS (type
) & TYPE_FLAG_UNSIGNED
)
1276 puts_filtered (" TYPE_FLAG_UNSIGNED");
1278 if (TYPE_FLAGS (type
) & TYPE_FLAG_SIGNED
)
1280 puts_filtered (" TYPE_FLAG_SIGNED");
1282 if (TYPE_FLAGS (type
) & TYPE_FLAG_STUB
)
1284 puts_filtered (" TYPE_FLAG_STUB");
1286 puts_filtered ("\n");
1287 printfi_filtered (spaces
, "nfields %d 0x%x\n", TYPE_NFIELDS (type
),
1288 TYPE_FIELDS (type
));
1289 for (idx
= 0; idx
< TYPE_NFIELDS (type
); idx
++)
1291 printfi_filtered (spaces
+ 2,
1292 "[%d] bitpos %d bitsize %d type 0x%x name '%s' (0x%x)\n",
1293 idx
, TYPE_FIELD_BITPOS (type
, idx
),
1294 TYPE_FIELD_BITSIZE (type
, idx
),
1295 TYPE_FIELD_TYPE (type
, idx
),
1296 TYPE_FIELD_NAME (type
, idx
),
1297 TYPE_FIELD_NAME (type
, idx
) != NULL
1298 ? TYPE_FIELD_NAME (type
, idx
)
1300 if (TYPE_FIELD_TYPE (type
, idx
) != NULL
)
1302 recursive_dump_type (TYPE_FIELD_TYPE (type
, idx
), spaces
+ 4);
1305 printfi_filtered (spaces
, "vptr_basetype 0x%x\n",
1306 TYPE_VPTR_BASETYPE (type
));
1307 if (TYPE_VPTR_BASETYPE (type
) != NULL
)
1309 recursive_dump_type (TYPE_VPTR_BASETYPE (type
), spaces
+ 2);
1311 printfi_filtered (spaces
, "vptr_fieldno %d\n", TYPE_VPTR_FIELDNO (type
));
1312 switch (TYPE_CODE (type
))
1314 case TYPE_CODE_METHOD
:
1315 case TYPE_CODE_FUNC
:
1316 printfi_filtered (spaces
, "arg_types 0x%x\n", TYPE_ARG_TYPES (type
));
1317 print_arg_types (TYPE_ARG_TYPES (type
), spaces
);
1320 case TYPE_CODE_STRUCT
:
1321 printfi_filtered (spaces
, "cplus_stuff 0x%x\n",
1322 TYPE_CPLUS_SPECIFIC (type
));
1323 print_cplus_stuff (type
, spaces
);
1327 /* We have to pick one of the union types to be able print and test
1328 the value. Pick cplus_struct_type, even though we know it isn't
1329 any particular one. */
1330 printfi_filtered (spaces
, "type_specific 0x%x",
1331 TYPE_CPLUS_SPECIFIC (type
));
1332 if (TYPE_CPLUS_SPECIFIC (type
) != NULL
)
1334 printf_filtered (" (unknown data form)");
1336 printf_filtered ("\n");
1342 #endif /* MAINTENANCE_CMDS */
1345 _initialize_gdbtypes ()
1348 init_type (TYPE_CODE_VOID
, 1,
1350 "void", (struct objfile
*) NULL
);
1352 init_type (TYPE_CODE_INT
, TARGET_CHAR_BIT
/ TARGET_CHAR_BIT
,
1354 "char", (struct objfile
*) NULL
);
1355 builtin_type_signed_char
=
1356 init_type (TYPE_CODE_INT
, TARGET_CHAR_BIT
/ TARGET_CHAR_BIT
,
1358 "signed char", (struct objfile
*) NULL
);
1359 builtin_type_unsigned_char
=
1360 init_type (TYPE_CODE_INT
, TARGET_CHAR_BIT
/ TARGET_CHAR_BIT
,
1362 "unsigned char", (struct objfile
*) NULL
);
1363 builtin_type_short
=
1364 init_type (TYPE_CODE_INT
, TARGET_SHORT_BIT
/ TARGET_CHAR_BIT
,
1366 "short", (struct objfile
*) NULL
);
1367 builtin_type_unsigned_short
=
1368 init_type (TYPE_CODE_INT
, TARGET_SHORT_BIT
/ TARGET_CHAR_BIT
,
1370 "unsigned short", (struct objfile
*) NULL
);
1372 init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
1374 "int", (struct objfile
*) NULL
);
1375 builtin_type_unsigned_int
=
1376 init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
1378 "unsigned int", (struct objfile
*) NULL
);
1380 init_type (TYPE_CODE_INT
, TARGET_LONG_BIT
/ TARGET_CHAR_BIT
,
1382 "long", (struct objfile
*) NULL
);
1383 builtin_type_unsigned_long
=
1384 init_type (TYPE_CODE_INT
, TARGET_LONG_BIT
/ TARGET_CHAR_BIT
,
1386 "unsigned long", (struct objfile
*) NULL
);
1387 builtin_type_long_long
=
1388 init_type (TYPE_CODE_INT
, TARGET_LONG_LONG_BIT
/ TARGET_CHAR_BIT
,
1390 "long long", (struct objfile
*) NULL
);
1391 builtin_type_unsigned_long_long
=
1392 init_type (TYPE_CODE_INT
, TARGET_LONG_LONG_BIT
/ TARGET_CHAR_BIT
,
1394 "unsigned long long", (struct objfile
*) NULL
);
1395 builtin_type_float
=
1396 init_type (TYPE_CODE_FLT
, TARGET_FLOAT_BIT
/ TARGET_CHAR_BIT
,
1398 "float", (struct objfile
*) NULL
);
1399 builtin_type_double
=
1400 init_type (TYPE_CODE_FLT
, TARGET_DOUBLE_BIT
/ TARGET_CHAR_BIT
,
1402 "double", (struct objfile
*) NULL
);
1403 builtin_type_long_double
=
1404 init_type (TYPE_CODE_FLT
, TARGET_LONG_DOUBLE_BIT
/ TARGET_CHAR_BIT
,
1406 "long double", (struct objfile
*) NULL
);
1407 builtin_type_complex
=
1408 init_type (TYPE_CODE_FLT
, TARGET_COMPLEX_BIT
/ TARGET_CHAR_BIT
,
1410 "complex", (struct objfile
*) NULL
);
1411 builtin_type_double_complex
=
1412 init_type (TYPE_CODE_FLT
, TARGET_DOUBLE_COMPLEX_BIT
/ TARGET_CHAR_BIT
,
1414 "double complex", (struct objfile
*) NULL
);
1415 builtin_type_string
=
1416 init_type (TYPE_CODE_STRING
, TARGET_CHAR_BIT
/ TARGET_CHAR_BIT
,
1418 "string", (struct objfile
*) NULL
);