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 /* If possible, make the vptr_fieldno and vptr_basetype fields of TYPE
753 valid. Callers should be aware that in some cases (for example,
754 the type or one of its baseclasses is a stub type and we are
755 debugging a .o file), this function will not be able to find the virtual
756 function table pointer, and vptr_fieldno will remain -1 and vptr_basetype
760 fill_in_vptr_fieldno (type
)
763 check_stub_type (type
);
765 if (TYPE_VPTR_FIELDNO (type
) < 0)
769 /* We must start at zero in case the first (and only) baseclass is
770 virtual (and hence we cannot share the table pointer). */
771 for (i
= 0; i
< TYPE_N_BASECLASSES (type
); i
++)
773 fill_in_vptr_fieldno (TYPE_BASECLASS (type
, i
));
774 if (TYPE_VPTR_FIELDNO (TYPE_BASECLASS (type
, i
)) >= 0)
776 TYPE_VPTR_FIELDNO (type
)
777 = TYPE_VPTR_FIELDNO (TYPE_BASECLASS (type
, i
));
778 TYPE_VPTR_BASETYPE (type
)
779 = TYPE_VPTR_BASETYPE (TYPE_BASECLASS (type
, i
));
786 /* Added by Bryan Boreham, Kewill, Sun Sep 17 18:07:17 1989.
788 If this is a stubbed struct (i.e. declared as struct foo *), see if
789 we can find a full definition in some other file. If so, copy this
790 definition, so we can use it in future. If not, set a flag so we
791 don't waste too much time in future. (FIXME, this doesn't seem
794 This used to be coded as a macro, but I don't think it is called
795 often enough to merit such treatment.
798 struct complaint stub_noname_complaint
=
799 {"stub type has NULL name", 0, 0};
802 check_stub_type (type
)
805 if (TYPE_FLAGS(type
) & TYPE_FLAG_STUB
)
807 char* name
= type_name_no_tag (type
);
811 complain (&stub_noname_complaint
);
814 sym
= lookup_symbol (name
, 0, STRUCT_NAMESPACE
, 0,
815 (struct symtab
**) NULL
);
818 memcpy ((char *)type
, (char *)SYMBOL_TYPE(sym
), sizeof (struct type
));
823 /* Ugly hack to convert method stubs into method types.
825 He ain't kiddin'. This demangles the name of the method into a string
826 including argument types, parses out each argument type, generates
827 a string casting a zero to that type, evaluates the string, and stuffs
828 the resulting type into an argtype vector!!! Then it knows the type
829 of the whole function (including argument types for overloading),
830 which info used to be in the stab's but was removed to hack back
831 the space required for them. */
834 check_stub_method (type
, i
, j
)
840 char *mangled_name
= gdb_mangle_name (type
, i
, j
);
841 char *demangled_name
= cplus_demangle (mangled_name
,
842 DMGL_PARAMS
| DMGL_ANSI
);
843 char *argtypetext
, *p
;
844 int depth
= 0, argcount
= 1;
845 struct type
**argtypes
;
848 if (demangled_name
== NULL
)
850 error ("Internal: Cannot demangle mangled name `%s'.", mangled_name
);
853 /* Now, read in the parameters that define this type. */
854 argtypetext
= strchr (demangled_name
, '(') + 1;
866 else if (*p
== ',' && depth
== 0)
874 /* We need two more slots: one for the THIS pointer, and one for the
875 NULL [...] or void [end of arglist]. */
877 argtypes
= (struct type
**)
878 TYPE_ALLOC (type
, (argcount
+ 2) * sizeof (struct type
*));
880 argtypes
[0] = lookup_pointer_type (type
);
883 if (*p
!= ')') /* () means no args, skip while */
888 if (depth
<= 0 && (*p
== ',' || *p
== ')'))
891 parse_and_eval_type (argtypetext
, p
- argtypetext
);
909 if (p
[-2] != '.') /* Not '...' */
911 argtypes
[argcount
] = builtin_type_void
; /* List terminator */
915 argtypes
[argcount
] = NULL
; /* Ellist terminator */
918 free (demangled_name
);
920 f
= TYPE_FN_FIELDLIST1 (type
, i
);
921 TYPE_FN_FIELD_PHYSNAME (f
, j
) = mangled_name
;
923 /* Now update the old "stub" type into a real type. */
924 mtype
= TYPE_FN_FIELD_TYPE (f
, j
);
925 TYPE_DOMAIN_TYPE (mtype
) = type
;
926 TYPE_ARG_TYPES (mtype
) = argtypes
;
927 TYPE_FLAGS (mtype
) &= ~TYPE_FLAG_STUB
;
928 TYPE_FN_FIELD_STUB (f
, j
) = 0;
931 const struct cplus_struct_type cplus_struct_default
;
934 allocate_cplus_struct_type (type
)
937 if (!HAVE_CPLUS_STRUCT (type
))
939 TYPE_CPLUS_SPECIFIC (type
) = (struct cplus_struct_type
*)
940 TYPE_ALLOC (type
, sizeof (struct cplus_struct_type
));
941 *(TYPE_CPLUS_SPECIFIC(type
)) = cplus_struct_default
;
945 /* Helper function to initialize the standard scalar types.
947 If NAME is non-NULL and OBJFILE is non-NULL, then we make a copy
948 of the string pointed to by name in the type_obstack for that objfile,
949 and initialize the type name to that copy. There are places (mipsread.c
950 in particular, where init_type is called with a NULL value for NAME). */
953 init_type (code
, length
, flags
, name
, objfile
)
958 struct objfile
*objfile
;
960 register struct type
*type
;
962 type
= alloc_type (objfile
);
963 TYPE_CODE (type
) = code
;
964 TYPE_LENGTH (type
) = length
;
965 TYPE_FLAGS (type
) |= flags
;
966 if ((name
!= NULL
) && (objfile
!= NULL
))
969 obsavestring (name
, strlen (name
), &objfile
-> type_obstack
);
973 TYPE_NAME (type
) = name
;
978 if (code
== TYPE_CODE_STRUCT
|| code
== TYPE_CODE_UNION
)
980 INIT_CPLUS_SPECIFIC (type
);
985 /* Look up a fundamental type for the specified objfile.
986 May need to construct such a type if this is the first use.
988 Some object file formats (ELF, COFF, etc) do not define fundamental
989 types such as "int" or "double". Others (stabs for example), do
990 define fundamental types.
992 For the formats which don't provide fundamental types, gdb can create
993 such types, using defaults reasonable for the current language and
994 the current target machine.
996 NOTE: This routine is obsolescent. Each debugging format reader
997 should manage it's own fundamental types, either creating them from
998 suitable defaults or reading them from the debugging information,
999 whichever is appropriate. The DWARF reader has already been
1000 fixed to do this. Once the other readers are fixed, this routine
1001 will go away. Also note that fundamental types should be managed
1002 on a compilation unit basis in a multi-language environment, not
1003 on a linkage unit basis as is done here. */
1007 lookup_fundamental_type (objfile
, typeid)
1008 struct objfile
*objfile
;
1011 register struct type
**typep
;
1012 register int nbytes
;
1014 if (typeid < 0 || typeid >= FT_NUM_MEMBERS
)
1016 error ("internal error - invalid fundamental type id %d", typeid);
1019 /* If this is the first time we need a fundamental type for this objfile
1020 then we need to initialize the vector of type pointers. */
1022 if (objfile
-> fundamental_types
== NULL
)
1024 nbytes
= FT_NUM_MEMBERS
* sizeof (struct type
*);
1025 objfile
-> fundamental_types
= (struct type
**)
1026 obstack_alloc (&objfile
-> type_obstack
, nbytes
);
1027 memset ((char *) objfile
-> fundamental_types
, 0, nbytes
);
1030 /* Look for this particular type in the fundamental type vector. If one is
1031 not found, create and install one appropriate for the current language. */
1033 typep
= objfile
-> fundamental_types
+ typeid;
1036 *typep
= create_fundamental_type (objfile
, typeid);
1042 #if MAINTENANCE_CMDS
1045 print_bit_vector (bits
, nbits
)
1051 for (bitno
= 0; bitno
< nbits
; bitno
++)
1053 if ((bitno
% 8) == 0)
1055 puts_filtered (" ");
1057 if (B_TST (bits
, bitno
))
1059 printf_filtered ("1");
1063 printf_filtered ("0");
1068 /* The args list is a strange beast. It is either terminated by a NULL
1069 pointer for varargs functions, or by a pointer to a TYPE_CODE_VOID
1070 type for normal fixed argcount functions. (FIXME someday)
1071 Also note the first arg should be the "this" pointer, we may not want to
1072 include it since we may get into a infinitely recursive situation. */
1075 print_arg_types (args
, spaces
)
1081 while (*args
!= NULL
)
1083 recursive_dump_type (*args
, spaces
+ 2);
1084 if ((*args
++) -> code
== TYPE_CODE_VOID
)
1093 dump_fn_fieldlists (type
, spaces
)
1101 printfi_filtered (spaces
, "fn_fieldlists 0x%x\n",
1102 TYPE_FN_FIELDLISTS (type
));
1103 for (method_idx
= 0; method_idx
< TYPE_NFN_FIELDS (type
); method_idx
++)
1105 f
= TYPE_FN_FIELDLIST1 (type
, method_idx
);
1106 printfi_filtered (spaces
+ 2, "[%d] name '%s' (0x%x) length %d\n",
1108 TYPE_FN_FIELDLIST_NAME (type
, method_idx
),
1109 TYPE_FN_FIELDLIST_NAME (type
, method_idx
),
1110 TYPE_FN_FIELDLIST_LENGTH (type
, method_idx
));
1111 for (overload_idx
= 0;
1112 overload_idx
< TYPE_FN_FIELDLIST_LENGTH (type
, method_idx
);
1115 printfi_filtered (spaces
+ 4, "[%d] physname '%s' (0x%x)\n",
1117 TYPE_FN_FIELD_PHYSNAME (f
, overload_idx
),
1118 TYPE_FN_FIELD_PHYSNAME (f
, overload_idx
));
1119 printfi_filtered (spaces
+ 8, "type 0x%x\n",
1120 TYPE_FN_FIELD_TYPE (f
, overload_idx
));
1121 recursive_dump_type (TYPE_FN_FIELD_TYPE (f
, overload_idx
),
1123 printfi_filtered (spaces
+ 8, "args 0x%x\n",
1124 TYPE_FN_FIELD_ARGS (f
, overload_idx
));
1125 print_arg_types (TYPE_FN_FIELD_ARGS (f
, overload_idx
), spaces
);
1126 printfi_filtered (spaces
+ 8, "fcontext 0x%x\n",
1127 TYPE_FN_FIELD_FCONTEXT (f
, overload_idx
));
1128 printfi_filtered (spaces
+ 8, "is_const %d\n",
1129 TYPE_FN_FIELD_CONST (f
, overload_idx
));
1130 printfi_filtered (spaces
+ 8, "is_volatile %d\n",
1131 TYPE_FN_FIELD_VOLATILE (f
, overload_idx
));
1132 printfi_filtered (spaces
+ 8, "is_private %d\n",
1133 TYPE_FN_FIELD_PRIVATE (f
, overload_idx
));
1134 printfi_filtered (spaces
+ 8, "is_protected %d\n",
1135 TYPE_FN_FIELD_PROTECTED (f
, overload_idx
));
1136 printfi_filtered (spaces
+ 8, "is_stub %d\n",
1137 TYPE_FN_FIELD_STUB (f
, overload_idx
));
1138 printfi_filtered (spaces
+ 8, "voffset %u\n",
1139 TYPE_FN_FIELD_VOFFSET (f
, overload_idx
));
1145 print_cplus_stuff (type
, spaces
)
1149 printfi_filtered (spaces
, "n_baseclasses %d\n",
1150 TYPE_N_BASECLASSES (type
));
1151 printfi_filtered (spaces
, "nfn_fields %d\n",
1152 TYPE_NFN_FIELDS (type
));
1153 printfi_filtered (spaces
, "nfn_fields_total %d\n",
1154 TYPE_NFN_FIELDS_TOTAL (type
));
1155 if (TYPE_N_BASECLASSES (type
) > 0)
1157 printfi_filtered (spaces
, "virtual_field_bits (%d bits at *0x%x)",
1158 TYPE_N_BASECLASSES (type
),
1159 TYPE_FIELD_VIRTUAL_BITS (type
));
1160 print_bit_vector (TYPE_FIELD_VIRTUAL_BITS (type
),
1161 TYPE_N_BASECLASSES (type
));
1162 puts_filtered ("\n");
1164 if (TYPE_NFIELDS (type
) > 0)
1166 if (TYPE_FIELD_PRIVATE_BITS (type
) != NULL
)
1168 printfi_filtered (spaces
, "private_field_bits (%d bits at *0x%x)",
1169 TYPE_NFIELDS (type
),
1170 TYPE_FIELD_PRIVATE_BITS (type
));
1171 print_bit_vector (TYPE_FIELD_PRIVATE_BITS (type
),
1172 TYPE_NFIELDS (type
));
1173 puts_filtered ("\n");
1175 if (TYPE_FIELD_PROTECTED_BITS (type
) != NULL
)
1177 printfi_filtered (spaces
, "protected_field_bits (%d bits at *0x%x)",
1178 TYPE_NFIELDS (type
),
1179 TYPE_FIELD_PROTECTED_BITS (type
));
1180 print_bit_vector (TYPE_FIELD_PROTECTED_BITS (type
),
1181 TYPE_NFIELDS (type
));
1182 puts_filtered ("\n");
1185 if (TYPE_NFN_FIELDS (type
) > 0)
1187 dump_fn_fieldlists (type
, spaces
);
1192 recursive_dump_type (type
, spaces
)
1198 printfi_filtered (spaces
, "type node 0x%x\n", type
);
1199 printfi_filtered (spaces
, "name '%s' (0x%x)\n", TYPE_NAME (type
),
1200 TYPE_NAME (type
) ? TYPE_NAME (type
) : "<NULL>");
1201 printfi_filtered (spaces
, "code 0x%x ", TYPE_CODE (type
));
1202 switch (TYPE_CODE (type
))
1204 case TYPE_CODE_UNDEF
:
1205 printf_filtered ("(TYPE_CODE_UNDEF)");
1208 printf_filtered ("(TYPE_CODE_PTR)");
1210 case TYPE_CODE_ARRAY
:
1211 printf_filtered ("(TYPE_CODE_ARRAY)");
1213 case TYPE_CODE_STRUCT
:
1214 printf_filtered ("(TYPE_CODE_STRUCT)");
1216 case TYPE_CODE_UNION
:
1217 printf_filtered ("(TYPE_CODE_UNION)");
1219 case TYPE_CODE_ENUM
:
1220 printf_filtered ("(TYPE_CODE_ENUM)");
1222 case TYPE_CODE_FUNC
:
1223 printf_filtered ("(TYPE_CODE_FUNC)");
1226 printf_filtered ("(TYPE_CODE_INT)");
1229 printf_filtered ("(TYPE_CODE_FLT)");
1231 case TYPE_CODE_VOID
:
1232 printf_filtered ("(TYPE_CODE_VOID)");
1235 printf_filtered ("(TYPE_CODE_SET)");
1237 case TYPE_CODE_RANGE
:
1238 printf_filtered ("(TYPE_CODE_RANGE)");
1240 case TYPE_CODE_STRING
:
1241 printf_filtered ("(TYPE_CODE_STRING)");
1243 case TYPE_CODE_ERROR
:
1244 printf_filtered ("(TYPE_CODE_ERROR)");
1246 case TYPE_CODE_MEMBER
:
1247 printf_filtered ("(TYPE_CODE_MEMBER)");
1249 case TYPE_CODE_METHOD
:
1250 printf_filtered ("(TYPE_CODE_METHOD)");
1253 printf_filtered ("(TYPE_CODE_REF)");
1255 case TYPE_CODE_CHAR
:
1256 printf_filtered ("(TYPE_CODE_CHAR)");
1258 case TYPE_CODE_BOOL
:
1259 printf_filtered ("(TYPE_CODE_BOOL)");
1262 printf_filtered ("(UNKNOWN TYPE CODE)");
1265 puts_filtered ("\n");
1266 printfi_filtered (spaces
, "length %d\n", TYPE_LENGTH (type
));
1267 printfi_filtered (spaces
, "objfile 0x%x\n", TYPE_OBJFILE (type
));
1268 printfi_filtered (spaces
, "target_type 0x%x\n", TYPE_TARGET_TYPE (type
));
1269 if (TYPE_TARGET_TYPE (type
) != NULL
)
1271 recursive_dump_type (TYPE_TARGET_TYPE (type
), spaces
+ 2);
1273 printfi_filtered (spaces
, "pointer_type 0x%x\n",
1274 TYPE_POINTER_TYPE (type
));
1275 printfi_filtered (spaces
, "reference_type 0x%x\n",
1276 TYPE_REFERENCE_TYPE (type
));
1277 printfi_filtered (spaces
, "function_type 0x%x\n",
1278 TYPE_FUNCTION_TYPE (type
));
1279 printfi_filtered (spaces
, "flags 0x%x", TYPE_FLAGS (type
));
1280 if (TYPE_FLAGS (type
) & TYPE_FLAG_UNSIGNED
)
1282 puts_filtered (" TYPE_FLAG_UNSIGNED");
1284 if (TYPE_FLAGS (type
) & TYPE_FLAG_SIGNED
)
1286 puts_filtered (" TYPE_FLAG_SIGNED");
1288 if (TYPE_FLAGS (type
) & TYPE_FLAG_STUB
)
1290 puts_filtered (" TYPE_FLAG_STUB");
1292 puts_filtered ("\n");
1293 printfi_filtered (spaces
, "nfields %d 0x%x\n", TYPE_NFIELDS (type
),
1294 TYPE_FIELDS (type
));
1295 for (idx
= 0; idx
< TYPE_NFIELDS (type
); idx
++)
1297 printfi_filtered (spaces
+ 2,
1298 "[%d] bitpos %d bitsize %d type 0x%x name '%s' (0x%x)\n",
1299 idx
, TYPE_FIELD_BITPOS (type
, idx
),
1300 TYPE_FIELD_BITSIZE (type
, idx
),
1301 TYPE_FIELD_TYPE (type
, idx
),
1302 TYPE_FIELD_NAME (type
, idx
),
1303 TYPE_FIELD_NAME (type
, idx
) != NULL
1304 ? TYPE_FIELD_NAME (type
, idx
)
1306 if (TYPE_FIELD_TYPE (type
, idx
) != NULL
)
1308 recursive_dump_type (TYPE_FIELD_TYPE (type
, idx
), spaces
+ 4);
1311 printfi_filtered (spaces
, "vptr_basetype 0x%x\n",
1312 TYPE_VPTR_BASETYPE (type
));
1313 if (TYPE_VPTR_BASETYPE (type
) != NULL
)
1315 recursive_dump_type (TYPE_VPTR_BASETYPE (type
), spaces
+ 2);
1317 printfi_filtered (spaces
, "vptr_fieldno %d\n", TYPE_VPTR_FIELDNO (type
));
1318 switch (TYPE_CODE (type
))
1320 case TYPE_CODE_METHOD
:
1321 case TYPE_CODE_FUNC
:
1322 printfi_filtered (spaces
, "arg_types 0x%x\n", TYPE_ARG_TYPES (type
));
1323 print_arg_types (TYPE_ARG_TYPES (type
), spaces
);
1326 case TYPE_CODE_STRUCT
:
1327 printfi_filtered (spaces
, "cplus_stuff 0x%x\n",
1328 TYPE_CPLUS_SPECIFIC (type
));
1329 print_cplus_stuff (type
, spaces
);
1333 /* We have to pick one of the union types to be able print and test
1334 the value. Pick cplus_struct_type, even though we know it isn't
1335 any particular one. */
1336 printfi_filtered (spaces
, "type_specific 0x%x",
1337 TYPE_CPLUS_SPECIFIC (type
));
1338 if (TYPE_CPLUS_SPECIFIC (type
) != NULL
)
1340 printf_filtered (" (unknown data form)");
1342 printf_filtered ("\n");
1348 #endif /* MAINTENANCE_CMDS */
1351 _initialize_gdbtypes ()
1354 init_type (TYPE_CODE_VOID
, 1,
1356 "void", (struct objfile
*) NULL
);
1358 init_type (TYPE_CODE_INT
, TARGET_CHAR_BIT
/ TARGET_CHAR_BIT
,
1360 "char", (struct objfile
*) NULL
);
1361 builtin_type_signed_char
=
1362 init_type (TYPE_CODE_INT
, TARGET_CHAR_BIT
/ TARGET_CHAR_BIT
,
1364 "signed char", (struct objfile
*) NULL
);
1365 builtin_type_unsigned_char
=
1366 init_type (TYPE_CODE_INT
, TARGET_CHAR_BIT
/ TARGET_CHAR_BIT
,
1368 "unsigned char", (struct objfile
*) NULL
);
1369 builtin_type_short
=
1370 init_type (TYPE_CODE_INT
, TARGET_SHORT_BIT
/ TARGET_CHAR_BIT
,
1372 "short", (struct objfile
*) NULL
);
1373 builtin_type_unsigned_short
=
1374 init_type (TYPE_CODE_INT
, TARGET_SHORT_BIT
/ TARGET_CHAR_BIT
,
1376 "unsigned short", (struct objfile
*) NULL
);
1378 init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
1380 "int", (struct objfile
*) NULL
);
1381 builtin_type_unsigned_int
=
1382 init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
1384 "unsigned int", (struct objfile
*) NULL
);
1386 init_type (TYPE_CODE_INT
, TARGET_LONG_BIT
/ TARGET_CHAR_BIT
,
1388 "long", (struct objfile
*) NULL
);
1389 builtin_type_unsigned_long
=
1390 init_type (TYPE_CODE_INT
, TARGET_LONG_BIT
/ TARGET_CHAR_BIT
,
1392 "unsigned long", (struct objfile
*) NULL
);
1393 builtin_type_long_long
=
1394 init_type (TYPE_CODE_INT
, TARGET_LONG_LONG_BIT
/ TARGET_CHAR_BIT
,
1396 "long long", (struct objfile
*) NULL
);
1397 builtin_type_unsigned_long_long
=
1398 init_type (TYPE_CODE_INT
, TARGET_LONG_LONG_BIT
/ TARGET_CHAR_BIT
,
1400 "unsigned long long", (struct objfile
*) NULL
);
1401 builtin_type_float
=
1402 init_type (TYPE_CODE_FLT
, TARGET_FLOAT_BIT
/ TARGET_CHAR_BIT
,
1404 "float", (struct objfile
*) NULL
);
1405 builtin_type_double
=
1406 init_type (TYPE_CODE_FLT
, TARGET_DOUBLE_BIT
/ TARGET_CHAR_BIT
,
1408 "double", (struct objfile
*) NULL
);
1409 builtin_type_long_double
=
1410 init_type (TYPE_CODE_FLT
, TARGET_LONG_DOUBLE_BIT
/ TARGET_CHAR_BIT
,
1412 "long double", (struct objfile
*) NULL
);
1413 builtin_type_complex
=
1414 init_type (TYPE_CODE_FLT
, TARGET_COMPLEX_BIT
/ TARGET_CHAR_BIT
,
1416 "complex", (struct objfile
*) NULL
);
1417 builtin_type_double_complex
=
1418 init_type (TYPE_CODE_FLT
, TARGET_DOUBLE_COMPLEX_BIT
/ TARGET_CHAR_BIT
,
1420 "double complex", (struct objfile
*) NULL
);
1421 builtin_type_string
=
1422 init_type (TYPE_CODE_STRING
, TARGET_CHAR_BIT
/ TARGET_CHAR_BIT
,
1424 "string", (struct objfile
*) NULL
);