1 /* Support routines for manipulating internal types for GDB.
3 Copyright (C) 1992-2014 Free Software Foundation, Inc.
5 Contributed by Cygnus Support, using pieces from other GDB modules.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
29 #include "expression.h"
34 #include "complaints.h"
37 #include "gdb_assert.h"
39 #include "exceptions.h"
40 #include "cp-support.h"
42 #include "dwarf2loc.h"
45 /* Initialize BADNESS constants. */
47 const struct rank LENGTH_MISMATCH_BADNESS
= {100,0};
49 const struct rank TOO_FEW_PARAMS_BADNESS
= {100,0};
50 const struct rank INCOMPATIBLE_TYPE_BADNESS
= {100,0};
52 const struct rank EXACT_MATCH_BADNESS
= {0,0};
54 const struct rank INTEGER_PROMOTION_BADNESS
= {1,0};
55 const struct rank FLOAT_PROMOTION_BADNESS
= {1,0};
56 const struct rank BASE_PTR_CONVERSION_BADNESS
= {1,0};
57 const struct rank INTEGER_CONVERSION_BADNESS
= {2,0};
58 const struct rank FLOAT_CONVERSION_BADNESS
= {2,0};
59 const struct rank INT_FLOAT_CONVERSION_BADNESS
= {2,0};
60 const struct rank VOID_PTR_CONVERSION_BADNESS
= {2,0};
61 const struct rank BOOL_CONVERSION_BADNESS
= {3,0};
62 const struct rank BASE_CONVERSION_BADNESS
= {2,0};
63 const struct rank REFERENCE_CONVERSION_BADNESS
= {2,0};
64 const struct rank NULL_POINTER_CONVERSION_BADNESS
= {2,0};
65 const struct rank NS_POINTER_CONVERSION_BADNESS
= {10,0};
66 const struct rank NS_INTEGER_POINTER_CONVERSION_BADNESS
= {3,0};
68 /* Floatformat pairs. */
69 const struct floatformat
*floatformats_ieee_half
[BFD_ENDIAN_UNKNOWN
] = {
70 &floatformat_ieee_half_big
,
71 &floatformat_ieee_half_little
73 const struct floatformat
*floatformats_ieee_single
[BFD_ENDIAN_UNKNOWN
] = {
74 &floatformat_ieee_single_big
,
75 &floatformat_ieee_single_little
77 const struct floatformat
*floatformats_ieee_double
[BFD_ENDIAN_UNKNOWN
] = {
78 &floatformat_ieee_double_big
,
79 &floatformat_ieee_double_little
81 const struct floatformat
*floatformats_ieee_double_littlebyte_bigword
[BFD_ENDIAN_UNKNOWN
] = {
82 &floatformat_ieee_double_big
,
83 &floatformat_ieee_double_littlebyte_bigword
85 const struct floatformat
*floatformats_i387_ext
[BFD_ENDIAN_UNKNOWN
] = {
86 &floatformat_i387_ext
,
89 const struct floatformat
*floatformats_m68881_ext
[BFD_ENDIAN_UNKNOWN
] = {
90 &floatformat_m68881_ext
,
91 &floatformat_m68881_ext
93 const struct floatformat
*floatformats_arm_ext
[BFD_ENDIAN_UNKNOWN
] = {
94 &floatformat_arm_ext_big
,
95 &floatformat_arm_ext_littlebyte_bigword
97 const struct floatformat
*floatformats_ia64_spill
[BFD_ENDIAN_UNKNOWN
] = {
98 &floatformat_ia64_spill_big
,
99 &floatformat_ia64_spill_little
101 const struct floatformat
*floatformats_ia64_quad
[BFD_ENDIAN_UNKNOWN
] = {
102 &floatformat_ia64_quad_big
,
103 &floatformat_ia64_quad_little
105 const struct floatformat
*floatformats_vax_f
[BFD_ENDIAN_UNKNOWN
] = {
109 const struct floatformat
*floatformats_vax_d
[BFD_ENDIAN_UNKNOWN
] = {
113 const struct floatformat
*floatformats_ibm_long_double
[BFD_ENDIAN_UNKNOWN
] = {
114 &floatformat_ibm_long_double_big
,
115 &floatformat_ibm_long_double_little
118 /* Should opaque types be resolved? */
120 static int opaque_type_resolution
= 1;
122 /* A flag to enable printing of debugging information of C++
125 unsigned int overload_debug
= 0;
127 /* A flag to enable strict type checking. */
129 static int strict_type_checking
= 1;
131 /* A function to show whether opaque types are resolved. */
134 show_opaque_type_resolution (struct ui_file
*file
, int from_tty
,
135 struct cmd_list_element
*c
,
138 fprintf_filtered (file
, _("Resolution of opaque struct/class/union types "
139 "(if set before loading symbols) is %s.\n"),
143 /* A function to show whether C++ overload debugging is enabled. */
146 show_overload_debug (struct ui_file
*file
, int from_tty
,
147 struct cmd_list_element
*c
, const char *value
)
149 fprintf_filtered (file
, _("Debugging of C++ overloading is %s.\n"),
153 /* A function to show the status of strict type checking. */
156 show_strict_type_checking (struct ui_file
*file
, int from_tty
,
157 struct cmd_list_element
*c
, const char *value
)
159 fprintf_filtered (file
, _("Strict type checking is %s.\n"), value
);
163 /* Allocate a new OBJFILE-associated type structure and fill it
164 with some defaults. Space for the type structure is allocated
165 on the objfile's objfile_obstack. */
168 alloc_type (struct objfile
*objfile
)
172 gdb_assert (objfile
!= NULL
);
174 /* Alloc the structure and start off with all fields zeroed. */
175 type
= OBSTACK_ZALLOC (&objfile
->objfile_obstack
, struct type
);
176 TYPE_MAIN_TYPE (type
) = OBSTACK_ZALLOC (&objfile
->objfile_obstack
,
178 OBJSTAT (objfile
, n_types
++);
180 TYPE_OBJFILE_OWNED (type
) = 1;
181 TYPE_OWNER (type
).objfile
= objfile
;
183 /* Initialize the fields that might not be zero. */
185 TYPE_CODE (type
) = TYPE_CODE_UNDEF
;
186 TYPE_VPTR_FIELDNO (type
) = -1;
187 TYPE_CHAIN (type
) = type
; /* Chain back to itself. */
192 /* Allocate a new GDBARCH-associated type structure and fill it
193 with some defaults. Space for the type structure is allocated
197 alloc_type_arch (struct gdbarch
*gdbarch
)
201 gdb_assert (gdbarch
!= NULL
);
203 /* Alloc the structure and start off with all fields zeroed. */
205 type
= XCNEW (struct type
);
206 TYPE_MAIN_TYPE (type
) = XCNEW (struct main_type
);
208 TYPE_OBJFILE_OWNED (type
) = 0;
209 TYPE_OWNER (type
).gdbarch
= gdbarch
;
211 /* Initialize the fields that might not be zero. */
213 TYPE_CODE (type
) = TYPE_CODE_UNDEF
;
214 TYPE_VPTR_FIELDNO (type
) = -1;
215 TYPE_CHAIN (type
) = type
; /* Chain back to itself. */
220 /* If TYPE is objfile-associated, allocate a new type structure
221 associated with the same objfile. If TYPE is gdbarch-associated,
222 allocate a new type structure associated with the same gdbarch. */
225 alloc_type_copy (const struct type
*type
)
227 if (TYPE_OBJFILE_OWNED (type
))
228 return alloc_type (TYPE_OWNER (type
).objfile
);
230 return alloc_type_arch (TYPE_OWNER (type
).gdbarch
);
233 /* If TYPE is gdbarch-associated, return that architecture.
234 If TYPE is objfile-associated, return that objfile's architecture. */
237 get_type_arch (const struct type
*type
)
239 if (TYPE_OBJFILE_OWNED (type
))
240 return get_objfile_arch (TYPE_OWNER (type
).objfile
);
242 return TYPE_OWNER (type
).gdbarch
;
245 /* See gdbtypes.h. */
248 get_target_type (struct type
*type
)
252 type
= TYPE_TARGET_TYPE (type
);
254 type
= check_typedef (type
);
260 /* Alloc a new type instance structure, fill it with some defaults,
261 and point it at OLDTYPE. Allocate the new type instance from the
262 same place as OLDTYPE. */
265 alloc_type_instance (struct type
*oldtype
)
269 /* Allocate the structure. */
271 if (! TYPE_OBJFILE_OWNED (oldtype
))
272 type
= XCNEW (struct type
);
274 type
= OBSTACK_ZALLOC (&TYPE_OBJFILE (oldtype
)->objfile_obstack
,
277 TYPE_MAIN_TYPE (type
) = TYPE_MAIN_TYPE (oldtype
);
279 TYPE_CHAIN (type
) = type
; /* Chain back to itself for now. */
284 /* Clear all remnants of the previous type at TYPE, in preparation for
285 replacing it with something else. Preserve owner information. */
288 smash_type (struct type
*type
)
290 int objfile_owned
= TYPE_OBJFILE_OWNED (type
);
291 union type_owner owner
= TYPE_OWNER (type
);
293 memset (TYPE_MAIN_TYPE (type
), 0, sizeof (struct main_type
));
295 /* Restore owner information. */
296 TYPE_OBJFILE_OWNED (type
) = objfile_owned
;
297 TYPE_OWNER (type
) = owner
;
299 /* For now, delete the rings. */
300 TYPE_CHAIN (type
) = type
;
302 /* For now, leave the pointer/reference types alone. */
305 /* Lookup a pointer to a type TYPE. TYPEPTR, if nonzero, points
306 to a pointer to memory where the pointer type should be stored.
307 If *TYPEPTR is zero, update it to point to the pointer type we return.
308 We allocate new memory if needed. */
311 make_pointer_type (struct type
*type
, struct type
**typeptr
)
313 struct type
*ntype
; /* New type */
316 ntype
= TYPE_POINTER_TYPE (type
);
321 return ntype
; /* Don't care about alloc,
322 and have new type. */
323 else if (*typeptr
== 0)
325 *typeptr
= ntype
; /* Tracking alloc, and have new type. */
330 if (typeptr
== 0 || *typeptr
== 0) /* We'll need to allocate one. */
332 ntype
= alloc_type_copy (type
);
336 else /* We have storage, but need to reset it. */
339 chain
= TYPE_CHAIN (ntype
);
341 TYPE_CHAIN (ntype
) = chain
;
344 TYPE_TARGET_TYPE (ntype
) = type
;
345 TYPE_POINTER_TYPE (type
) = ntype
;
347 /* FIXME! Assumes the machine has only one representation for pointers! */
350 = gdbarch_ptr_bit (get_type_arch (type
)) / TARGET_CHAR_BIT
;
351 TYPE_CODE (ntype
) = TYPE_CODE_PTR
;
353 /* Mark pointers as unsigned. The target converts between pointers
354 and addresses (CORE_ADDRs) using gdbarch_pointer_to_address and
355 gdbarch_address_to_pointer. */
356 TYPE_UNSIGNED (ntype
) = 1;
358 /* Update the length of all the other variants of this type. */
359 chain
= TYPE_CHAIN (ntype
);
360 while (chain
!= ntype
)
362 TYPE_LENGTH (chain
) = TYPE_LENGTH (ntype
);
363 chain
= TYPE_CHAIN (chain
);
369 /* Given a type TYPE, return a type of pointers to that type.
370 May need to construct such a type if this is the first use. */
373 lookup_pointer_type (struct type
*type
)
375 return make_pointer_type (type
, (struct type
**) 0);
378 /* Lookup a C++ `reference' to a type TYPE. TYPEPTR, if nonzero,
379 points to a pointer to memory where the reference type should be
380 stored. If *TYPEPTR is zero, update it to point to the reference
381 type we return. We allocate new memory if needed. */
384 make_reference_type (struct type
*type
, struct type
**typeptr
)
386 struct type
*ntype
; /* New type */
389 ntype
= TYPE_REFERENCE_TYPE (type
);
394 return ntype
; /* Don't care about alloc,
395 and have new type. */
396 else if (*typeptr
== 0)
398 *typeptr
= ntype
; /* Tracking alloc, and have new type. */
403 if (typeptr
== 0 || *typeptr
== 0) /* We'll need to allocate one. */
405 ntype
= alloc_type_copy (type
);
409 else /* We have storage, but need to reset it. */
412 chain
= TYPE_CHAIN (ntype
);
414 TYPE_CHAIN (ntype
) = chain
;
417 TYPE_TARGET_TYPE (ntype
) = type
;
418 TYPE_REFERENCE_TYPE (type
) = ntype
;
420 /* FIXME! Assume the machine has only one representation for
421 references, and that it matches the (only) representation for
424 TYPE_LENGTH (ntype
) =
425 gdbarch_ptr_bit (get_type_arch (type
)) / TARGET_CHAR_BIT
;
426 TYPE_CODE (ntype
) = TYPE_CODE_REF
;
428 if (!TYPE_REFERENCE_TYPE (type
)) /* Remember it, if don't have one. */
429 TYPE_REFERENCE_TYPE (type
) = ntype
;
431 /* Update the length of all the other variants of this type. */
432 chain
= TYPE_CHAIN (ntype
);
433 while (chain
!= ntype
)
435 TYPE_LENGTH (chain
) = TYPE_LENGTH (ntype
);
436 chain
= TYPE_CHAIN (chain
);
442 /* Same as above, but caller doesn't care about memory allocation
446 lookup_reference_type (struct type
*type
)
448 return make_reference_type (type
, (struct type
**) 0);
451 /* Lookup a function type that returns type TYPE. TYPEPTR, if
452 nonzero, points to a pointer to memory where the function type
453 should be stored. If *TYPEPTR is zero, update it to point to the
454 function type we return. We allocate new memory if needed. */
457 make_function_type (struct type
*type
, struct type
**typeptr
)
459 struct type
*ntype
; /* New type */
461 if (typeptr
== 0 || *typeptr
== 0) /* We'll need to allocate one. */
463 ntype
= alloc_type_copy (type
);
467 else /* We have storage, but need to reset it. */
473 TYPE_TARGET_TYPE (ntype
) = type
;
475 TYPE_LENGTH (ntype
) = 1;
476 TYPE_CODE (ntype
) = TYPE_CODE_FUNC
;
478 INIT_FUNC_SPECIFIC (ntype
);
483 /* Given a type TYPE, return a type of functions that return that type.
484 May need to construct such a type if this is the first use. */
487 lookup_function_type (struct type
*type
)
489 return make_function_type (type
, (struct type
**) 0);
492 /* Given a type TYPE and argument types, return the appropriate
493 function type. If the final type in PARAM_TYPES is NULL, make a
497 lookup_function_type_with_arguments (struct type
*type
,
499 struct type
**param_types
)
501 struct type
*fn
= make_function_type (type
, (struct type
**) 0);
506 if (param_types
[nparams
- 1] == NULL
)
509 TYPE_VARARGS (fn
) = 1;
511 else if (TYPE_CODE (check_typedef (param_types
[nparams
- 1]))
515 /* Caller should have ensured this. */
516 gdb_assert (nparams
== 0);
517 TYPE_PROTOTYPED (fn
) = 1;
521 TYPE_NFIELDS (fn
) = nparams
;
522 TYPE_FIELDS (fn
) = TYPE_ZALLOC (fn
, nparams
* sizeof (struct field
));
523 for (i
= 0; i
< nparams
; ++i
)
524 TYPE_FIELD_TYPE (fn
, i
) = param_types
[i
];
529 /* Identify address space identifier by name --
530 return the integer flag defined in gdbtypes.h. */
533 address_space_name_to_int (struct gdbarch
*gdbarch
, char *space_identifier
)
537 /* Check for known address space delimiters. */
538 if (!strcmp (space_identifier
, "code"))
539 return TYPE_INSTANCE_FLAG_CODE_SPACE
;
540 else if (!strcmp (space_identifier
, "data"))
541 return TYPE_INSTANCE_FLAG_DATA_SPACE
;
542 else if (gdbarch_address_class_name_to_type_flags_p (gdbarch
)
543 && gdbarch_address_class_name_to_type_flags (gdbarch
,
548 error (_("Unknown address space specifier: \"%s\""), space_identifier
);
551 /* Identify address space identifier by integer flag as defined in
552 gdbtypes.h -- return the string version of the adress space name. */
555 address_space_int_to_name (struct gdbarch
*gdbarch
, int space_flag
)
557 if (space_flag
& TYPE_INSTANCE_FLAG_CODE_SPACE
)
559 else if (space_flag
& TYPE_INSTANCE_FLAG_DATA_SPACE
)
561 else if ((space_flag
& TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL
)
562 && gdbarch_address_class_type_flags_to_name_p (gdbarch
))
563 return gdbarch_address_class_type_flags_to_name (gdbarch
, space_flag
);
568 /* Create a new type with instance flags NEW_FLAGS, based on TYPE.
570 If STORAGE is non-NULL, create the new type instance there.
571 STORAGE must be in the same obstack as TYPE. */
574 make_qualified_type (struct type
*type
, int new_flags
,
575 struct type
*storage
)
582 if (TYPE_INSTANCE_FLAGS (ntype
) == new_flags
)
584 ntype
= TYPE_CHAIN (ntype
);
586 while (ntype
!= type
);
588 /* Create a new type instance. */
590 ntype
= alloc_type_instance (type
);
593 /* If STORAGE was provided, it had better be in the same objfile
594 as TYPE. Otherwise, we can't link it into TYPE's cv chain:
595 if one objfile is freed and the other kept, we'd have
596 dangling pointers. */
597 gdb_assert (TYPE_OBJFILE (type
) == TYPE_OBJFILE (storage
));
600 TYPE_MAIN_TYPE (ntype
) = TYPE_MAIN_TYPE (type
);
601 TYPE_CHAIN (ntype
) = ntype
;
604 /* Pointers or references to the original type are not relevant to
606 TYPE_POINTER_TYPE (ntype
) = (struct type
*) 0;
607 TYPE_REFERENCE_TYPE (ntype
) = (struct type
*) 0;
609 /* Chain the new qualified type to the old type. */
610 TYPE_CHAIN (ntype
) = TYPE_CHAIN (type
);
611 TYPE_CHAIN (type
) = ntype
;
613 /* Now set the instance flags and return the new type. */
614 TYPE_INSTANCE_FLAGS (ntype
) = new_flags
;
616 /* Set length of new type to that of the original type. */
617 TYPE_LENGTH (ntype
) = TYPE_LENGTH (type
);
622 /* Make an address-space-delimited variant of a type -- a type that
623 is identical to the one supplied except that it has an address
624 space attribute attached to it (such as "code" or "data").
626 The space attributes "code" and "data" are for Harvard
627 architectures. The address space attributes are for architectures
628 which have alternately sized pointers or pointers with alternate
632 make_type_with_address_space (struct type
*type
, int space_flag
)
634 int new_flags
= ((TYPE_INSTANCE_FLAGS (type
)
635 & ~(TYPE_INSTANCE_FLAG_CODE_SPACE
636 | TYPE_INSTANCE_FLAG_DATA_SPACE
637 | TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL
))
640 return make_qualified_type (type
, new_flags
, NULL
);
643 /* Make a "c-v" variant of a type -- a type that is identical to the
644 one supplied except that it may have const or volatile attributes
645 CNST is a flag for setting the const attribute
646 VOLTL is a flag for setting the volatile attribute
647 TYPE is the base type whose variant we are creating.
649 If TYPEPTR and *TYPEPTR are non-zero, then *TYPEPTR points to
650 storage to hold the new qualified type; *TYPEPTR and TYPE must be
651 in the same objfile. Otherwise, allocate fresh memory for the new
652 type whereever TYPE lives. If TYPEPTR is non-zero, set it to the
653 new type we construct. */
656 make_cv_type (int cnst
, int voltl
,
658 struct type
**typeptr
)
660 struct type
*ntype
; /* New type */
662 int new_flags
= (TYPE_INSTANCE_FLAGS (type
)
663 & ~(TYPE_INSTANCE_FLAG_CONST
664 | TYPE_INSTANCE_FLAG_VOLATILE
));
667 new_flags
|= TYPE_INSTANCE_FLAG_CONST
;
670 new_flags
|= TYPE_INSTANCE_FLAG_VOLATILE
;
672 if (typeptr
&& *typeptr
!= NULL
)
674 /* TYPE and *TYPEPTR must be in the same objfile. We can't have
675 a C-V variant chain that threads across objfiles: if one
676 objfile gets freed, then the other has a broken C-V chain.
678 This code used to try to copy over the main type from TYPE to
679 *TYPEPTR if they were in different objfiles, but that's
680 wrong, too: TYPE may have a field list or member function
681 lists, which refer to types of their own, etc. etc. The
682 whole shebang would need to be copied over recursively; you
683 can't have inter-objfile pointers. The only thing to do is
684 to leave stub types as stub types, and look them up afresh by
685 name each time you encounter them. */
686 gdb_assert (TYPE_OBJFILE (*typeptr
) == TYPE_OBJFILE (type
));
689 ntype
= make_qualified_type (type
, new_flags
,
690 typeptr
? *typeptr
: NULL
);
698 /* Make a 'restrict'-qualified version of TYPE. */
701 make_restrict_type (struct type
*type
)
703 return make_qualified_type (type
,
704 (TYPE_INSTANCE_FLAGS (type
)
705 | TYPE_INSTANCE_FLAG_RESTRICT
),
709 /* Replace the contents of ntype with the type *type. This changes the
710 contents, rather than the pointer for TYPE_MAIN_TYPE (ntype); thus
711 the changes are propogated to all types in the TYPE_CHAIN.
713 In order to build recursive types, it's inevitable that we'll need
714 to update types in place --- but this sort of indiscriminate
715 smashing is ugly, and needs to be replaced with something more
716 controlled. TYPE_MAIN_TYPE is a step in this direction; it's not
717 clear if more steps are needed. */
720 replace_type (struct type
*ntype
, struct type
*type
)
724 /* These two types had better be in the same objfile. Otherwise,
725 the assignment of one type's main type structure to the other
726 will produce a type with references to objects (names; field
727 lists; etc.) allocated on an objfile other than its own. */
728 gdb_assert (TYPE_OBJFILE (ntype
) == TYPE_OBJFILE (ntype
));
730 *TYPE_MAIN_TYPE (ntype
) = *TYPE_MAIN_TYPE (type
);
732 /* The type length is not a part of the main type. Update it for
733 each type on the variant chain. */
737 /* Assert that this element of the chain has no address-class bits
738 set in its flags. Such type variants might have type lengths
739 which are supposed to be different from the non-address-class
740 variants. This assertion shouldn't ever be triggered because
741 symbol readers which do construct address-class variants don't
742 call replace_type(). */
743 gdb_assert (TYPE_ADDRESS_CLASS_ALL (chain
) == 0);
745 TYPE_LENGTH (chain
) = TYPE_LENGTH (type
);
746 chain
= TYPE_CHAIN (chain
);
748 while (ntype
!= chain
);
750 /* Assert that the two types have equivalent instance qualifiers.
751 This should be true for at least all of our debug readers. */
752 gdb_assert (TYPE_INSTANCE_FLAGS (ntype
) == TYPE_INSTANCE_FLAGS (type
));
755 /* Implement direct support for MEMBER_TYPE in GNU C++.
756 May need to construct such a type if this is the first use.
757 The TYPE is the type of the member. The DOMAIN is the type
758 of the aggregate that the member belongs to. */
761 lookup_memberptr_type (struct type
*type
, struct type
*domain
)
765 mtype
= alloc_type_copy (type
);
766 smash_to_memberptr_type (mtype
, domain
, type
);
770 /* Return a pointer-to-method type, for a method of type TO_TYPE. */
773 lookup_methodptr_type (struct type
*to_type
)
777 mtype
= alloc_type_copy (to_type
);
778 smash_to_methodptr_type (mtype
, to_type
);
782 /* Allocate a stub method whose return type is TYPE. This apparently
783 happens for speed of symbol reading, since parsing out the
784 arguments to the method is cpu-intensive, the way we are doing it.
785 So, we will fill in arguments later. This always returns a fresh
789 allocate_stub_method (struct type
*type
)
793 mtype
= alloc_type_copy (type
);
794 TYPE_CODE (mtype
) = TYPE_CODE_METHOD
;
795 TYPE_LENGTH (mtype
) = 1;
796 TYPE_STUB (mtype
) = 1;
797 TYPE_TARGET_TYPE (mtype
) = type
;
798 /* _DOMAIN_TYPE (mtype) = unknown yet */
802 /* Create a range type with a dynamic range from LOW_BOUND to
803 HIGH_BOUND, inclusive. See create_range_type for further details. */
806 create_range_type (struct type
*result_type
, struct type
*index_type
,
807 const struct dynamic_prop
*low_bound
,
808 const struct dynamic_prop
*high_bound
)
810 if (result_type
== NULL
)
811 result_type
= alloc_type_copy (index_type
);
812 TYPE_CODE (result_type
) = TYPE_CODE_RANGE
;
813 TYPE_TARGET_TYPE (result_type
) = index_type
;
814 if (TYPE_STUB (index_type
))
815 TYPE_TARGET_STUB (result_type
) = 1;
817 TYPE_LENGTH (result_type
) = TYPE_LENGTH (check_typedef (index_type
));
819 TYPE_RANGE_DATA (result_type
) = (struct range_bounds
*)
820 TYPE_ZALLOC (result_type
, sizeof (struct range_bounds
));
821 TYPE_RANGE_DATA (result_type
)->low
= *low_bound
;
822 TYPE_RANGE_DATA (result_type
)->high
= *high_bound
;
824 if (low_bound
->kind
== PROP_CONST
&& low_bound
->data
.const_val
>= 0)
825 TYPE_UNSIGNED (result_type
) = 1;
830 /* Create a range type using either a blank type supplied in
831 RESULT_TYPE, or creating a new type, inheriting the objfile from
834 Indices will be of type INDEX_TYPE, and will range from LOW_BOUND
835 to HIGH_BOUND, inclusive.
837 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
838 sure it is TYPE_CODE_UNDEF before we bash it into a range type? */
841 create_static_range_type (struct type
*result_type
, struct type
*index_type
,
842 LONGEST low_bound
, LONGEST high_bound
)
844 struct dynamic_prop low
, high
;
846 low
.kind
= PROP_CONST
;
847 low
.data
.const_val
= low_bound
;
849 high
.kind
= PROP_CONST
;
850 high
.data
.const_val
= high_bound
;
852 result_type
= create_range_type (result_type
, index_type
, &low
, &high
);
857 /* Predicate tests whether BOUNDS are static. Returns 1 if all bounds values
858 are static, otherwise returns 0. */
861 has_static_range (const struct range_bounds
*bounds
)
863 return (bounds
->low
.kind
== PROP_CONST
864 && bounds
->high
.kind
== PROP_CONST
);
868 /* Set *LOWP and *HIGHP to the lower and upper bounds of discrete type
869 TYPE. Return 1 if type is a range type, 0 if it is discrete (and
870 bounds will fit in LONGEST), or -1 otherwise. */
873 get_discrete_bounds (struct type
*type
, LONGEST
*lowp
, LONGEST
*highp
)
875 CHECK_TYPEDEF (type
);
876 switch (TYPE_CODE (type
))
878 case TYPE_CODE_RANGE
:
879 *lowp
= TYPE_LOW_BOUND (type
);
880 *highp
= TYPE_HIGH_BOUND (type
);
883 if (TYPE_NFIELDS (type
) > 0)
885 /* The enums may not be sorted by value, so search all
889 *lowp
= *highp
= TYPE_FIELD_ENUMVAL (type
, 0);
890 for (i
= 0; i
< TYPE_NFIELDS (type
); i
++)
892 if (TYPE_FIELD_ENUMVAL (type
, i
) < *lowp
)
893 *lowp
= TYPE_FIELD_ENUMVAL (type
, i
);
894 if (TYPE_FIELD_ENUMVAL (type
, i
) > *highp
)
895 *highp
= TYPE_FIELD_ENUMVAL (type
, i
);
898 /* Set unsigned indicator if warranted. */
901 TYPE_UNSIGNED (type
) = 1;
915 if (TYPE_LENGTH (type
) > sizeof (LONGEST
)) /* Too big */
917 if (!TYPE_UNSIGNED (type
))
919 *lowp
= -(1 << (TYPE_LENGTH (type
) * TARGET_CHAR_BIT
- 1));
923 /* ... fall through for unsigned ints ... */
926 /* This round-about calculation is to avoid shifting by
927 TYPE_LENGTH (type) * TARGET_CHAR_BIT, which will not work
928 if TYPE_LENGTH (type) == sizeof (LONGEST). */
929 *highp
= 1 << (TYPE_LENGTH (type
) * TARGET_CHAR_BIT
- 1);
930 *highp
= (*highp
- 1) | *highp
;
937 /* Assuming TYPE is a simple, non-empty array type, compute its upper
938 and lower bound. Save the low bound into LOW_BOUND if not NULL.
939 Save the high bound into HIGH_BOUND if not NULL.
941 Return 1 if the operation was successful. Return zero otherwise,
942 in which case the values of LOW_BOUND and HIGH_BOUNDS are unmodified.
944 We now simply use get_discrete_bounds call to get the values
945 of the low and high bounds.
946 get_discrete_bounds can return three values:
947 1, meaning that index is a range,
948 0, meaning that index is a discrete type,
949 or -1 for failure. */
952 get_array_bounds (struct type
*type
, LONGEST
*low_bound
, LONGEST
*high_bound
)
954 struct type
*index
= TYPE_INDEX_TYPE (type
);
962 res
= get_discrete_bounds (index
, &low
, &high
);
966 /* Check if the array bounds are undefined. */
968 && ((low_bound
&& TYPE_ARRAY_LOWER_BOUND_IS_UNDEFINED (type
))
969 || (high_bound
&& TYPE_ARRAY_UPPER_BOUND_IS_UNDEFINED (type
))))
981 /* Create an array type using either a blank type supplied in
982 RESULT_TYPE, or creating a new type, inheriting the objfile from
985 Elements will be of type ELEMENT_TYPE, the indices will be of type
988 If BIT_STRIDE is not zero, build a packed array type whose element
989 size is BIT_STRIDE. Otherwise, ignore this parameter.
991 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
992 sure it is TYPE_CODE_UNDEF before we bash it into an array
996 create_array_type_with_stride (struct type
*result_type
,
997 struct type
*element_type
,
998 struct type
*range_type
,
999 unsigned int bit_stride
)
1001 if (result_type
== NULL
)
1002 result_type
= alloc_type_copy (range_type
);
1004 TYPE_CODE (result_type
) = TYPE_CODE_ARRAY
;
1005 TYPE_TARGET_TYPE (result_type
) = element_type
;
1006 if (has_static_range (TYPE_RANGE_DATA (range_type
)))
1008 LONGEST low_bound
, high_bound
;
1010 if (get_discrete_bounds (range_type
, &low_bound
, &high_bound
) < 0)
1011 low_bound
= high_bound
= 0;
1012 CHECK_TYPEDEF (element_type
);
1013 /* Be careful when setting the array length. Ada arrays can be
1014 empty arrays with the high_bound being smaller than the low_bound.
1015 In such cases, the array length should be zero. */
1016 if (high_bound
< low_bound
)
1017 TYPE_LENGTH (result_type
) = 0;
1018 else if (bit_stride
> 0)
1019 TYPE_LENGTH (result_type
) =
1020 (bit_stride
* (high_bound
- low_bound
+ 1) + 7) / 8;
1022 TYPE_LENGTH (result_type
) =
1023 TYPE_LENGTH (element_type
) * (high_bound
- low_bound
+ 1);
1027 /* This type is dynamic and its length needs to be computed
1028 on demand. In the meantime, avoid leaving the TYPE_LENGTH
1029 undefined by setting it to zero. Although we are not expected
1030 to trust TYPE_LENGTH in this case, setting the size to zero
1031 allows us to avoid allocating objects of random sizes in case
1032 we accidently do. */
1033 TYPE_LENGTH (result_type
) = 0;
1036 TYPE_NFIELDS (result_type
) = 1;
1037 TYPE_FIELDS (result_type
) =
1038 (struct field
*) TYPE_ZALLOC (result_type
, sizeof (struct field
));
1039 TYPE_INDEX_TYPE (result_type
) = range_type
;
1040 TYPE_VPTR_FIELDNO (result_type
) = -1;
1042 TYPE_FIELD_BITSIZE (result_type
, 0) = bit_stride
;
1044 /* TYPE_FLAG_TARGET_STUB will take care of zero length arrays. */
1045 if (TYPE_LENGTH (result_type
) == 0)
1046 TYPE_TARGET_STUB (result_type
) = 1;
1051 /* Same as create_array_type_with_stride but with no bit_stride
1052 (BIT_STRIDE = 0), thus building an unpacked array. */
1055 create_array_type (struct type
*result_type
,
1056 struct type
*element_type
,
1057 struct type
*range_type
)
1059 return create_array_type_with_stride (result_type
, element_type
,
1064 lookup_array_range_type (struct type
*element_type
,
1065 LONGEST low_bound
, LONGEST high_bound
)
1067 struct gdbarch
*gdbarch
= get_type_arch (element_type
);
1068 struct type
*index_type
= builtin_type (gdbarch
)->builtin_int
;
1069 struct type
*range_type
1070 = create_static_range_type (NULL
, index_type
, low_bound
, high_bound
);
1072 return create_array_type (NULL
, element_type
, range_type
);
1075 /* Create a string type using either a blank type supplied in
1076 RESULT_TYPE, or creating a new type. String types are similar
1077 enough to array of char types that we can use create_array_type to
1078 build the basic type and then bash it into a string type.
1080 For fixed length strings, the range type contains 0 as the lower
1081 bound and the length of the string minus one as the upper bound.
1083 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
1084 sure it is TYPE_CODE_UNDEF before we bash it into a string
1088 create_string_type (struct type
*result_type
,
1089 struct type
*string_char_type
,
1090 struct type
*range_type
)
1092 result_type
= create_array_type (result_type
,
1095 TYPE_CODE (result_type
) = TYPE_CODE_STRING
;
1100 lookup_string_range_type (struct type
*string_char_type
,
1101 LONGEST low_bound
, LONGEST high_bound
)
1103 struct type
*result_type
;
1105 result_type
= lookup_array_range_type (string_char_type
,
1106 low_bound
, high_bound
);
1107 TYPE_CODE (result_type
) = TYPE_CODE_STRING
;
1112 create_set_type (struct type
*result_type
, struct type
*domain_type
)
1114 if (result_type
== NULL
)
1115 result_type
= alloc_type_copy (domain_type
);
1117 TYPE_CODE (result_type
) = TYPE_CODE_SET
;
1118 TYPE_NFIELDS (result_type
) = 1;
1119 TYPE_FIELDS (result_type
) = TYPE_ZALLOC (result_type
, sizeof (struct field
));
1121 if (!TYPE_STUB (domain_type
))
1123 LONGEST low_bound
, high_bound
, bit_length
;
1125 if (get_discrete_bounds (domain_type
, &low_bound
, &high_bound
) < 0)
1126 low_bound
= high_bound
= 0;
1127 bit_length
= high_bound
- low_bound
+ 1;
1128 TYPE_LENGTH (result_type
)
1129 = (bit_length
+ TARGET_CHAR_BIT
- 1) / TARGET_CHAR_BIT
;
1131 TYPE_UNSIGNED (result_type
) = 1;
1133 TYPE_FIELD_TYPE (result_type
, 0) = domain_type
;
1138 /* Convert ARRAY_TYPE to a vector type. This may modify ARRAY_TYPE
1139 and any array types nested inside it. */
1142 make_vector_type (struct type
*array_type
)
1144 struct type
*inner_array
, *elt_type
;
1147 /* Find the innermost array type, in case the array is
1148 multi-dimensional. */
1149 inner_array
= array_type
;
1150 while (TYPE_CODE (TYPE_TARGET_TYPE (inner_array
)) == TYPE_CODE_ARRAY
)
1151 inner_array
= TYPE_TARGET_TYPE (inner_array
);
1153 elt_type
= TYPE_TARGET_TYPE (inner_array
);
1154 if (TYPE_CODE (elt_type
) == TYPE_CODE_INT
)
1156 flags
= TYPE_INSTANCE_FLAGS (elt_type
) | TYPE_INSTANCE_FLAG_NOTTEXT
;
1157 elt_type
= make_qualified_type (elt_type
, flags
, NULL
);
1158 TYPE_TARGET_TYPE (inner_array
) = elt_type
;
1161 TYPE_VECTOR (array_type
) = 1;
1165 init_vector_type (struct type
*elt_type
, int n
)
1167 struct type
*array_type
;
1169 array_type
= lookup_array_range_type (elt_type
, 0, n
- 1);
1170 make_vector_type (array_type
);
1174 /* Smash TYPE to be a type of pointers to members of DOMAIN with type
1175 TO_TYPE. A member pointer is a wierd thing -- it amounts to a
1176 typed offset into a struct, e.g. "an int at offset 8". A MEMBER
1177 TYPE doesn't include the offset (that's the value of the MEMBER
1178 itself), but does include the structure type into which it points
1181 When "smashing" the type, we preserve the objfile that the old type
1182 pointed to, since we aren't changing where the type is actually
1186 smash_to_memberptr_type (struct type
*type
, struct type
*domain
,
1187 struct type
*to_type
)
1190 TYPE_TARGET_TYPE (type
) = to_type
;
1191 TYPE_DOMAIN_TYPE (type
) = domain
;
1192 /* Assume that a data member pointer is the same size as a normal
1195 = gdbarch_ptr_bit (get_type_arch (to_type
)) / TARGET_CHAR_BIT
;
1196 TYPE_CODE (type
) = TYPE_CODE_MEMBERPTR
;
1199 /* Smash TYPE to be a type of pointer to methods type TO_TYPE.
1201 When "smashing" the type, we preserve the objfile that the old type
1202 pointed to, since we aren't changing where the type is actually
1206 smash_to_methodptr_type (struct type
*type
, struct type
*to_type
)
1209 TYPE_TARGET_TYPE (type
) = to_type
;
1210 TYPE_DOMAIN_TYPE (type
) = TYPE_DOMAIN_TYPE (to_type
);
1211 TYPE_LENGTH (type
) = cplus_method_ptr_size (to_type
);
1212 TYPE_CODE (type
) = TYPE_CODE_METHODPTR
;
1215 /* Smash TYPE to be a type of method of DOMAIN with type TO_TYPE.
1216 METHOD just means `function that gets an extra "this" argument'.
1218 When "smashing" the type, we preserve the objfile that the old type
1219 pointed to, since we aren't changing where the type is actually
1223 smash_to_method_type (struct type
*type
, struct type
*domain
,
1224 struct type
*to_type
, struct field
*args
,
1225 int nargs
, int varargs
)
1228 TYPE_TARGET_TYPE (type
) = to_type
;
1229 TYPE_DOMAIN_TYPE (type
) = domain
;
1230 TYPE_FIELDS (type
) = args
;
1231 TYPE_NFIELDS (type
) = nargs
;
1233 TYPE_VARARGS (type
) = 1;
1234 TYPE_LENGTH (type
) = 1; /* In practice, this is never needed. */
1235 TYPE_CODE (type
) = TYPE_CODE_METHOD
;
1238 /* Return a typename for a struct/union/enum type without "struct ",
1239 "union ", or "enum ". If the type has a NULL name, return NULL. */
1242 type_name_no_tag (const struct type
*type
)
1244 if (TYPE_TAG_NAME (type
) != NULL
)
1245 return TYPE_TAG_NAME (type
);
1247 /* Is there code which expects this to return the name if there is
1248 no tag name? My guess is that this is mainly used for C++ in
1249 cases where the two will always be the same. */
1250 return TYPE_NAME (type
);
1253 /* A wrapper of type_name_no_tag which calls error if the type is anonymous.
1254 Since GCC PR debug/47510 DWARF provides associated information to detect the
1255 anonymous class linkage name from its typedef.
1257 Parameter TYPE should not yet have CHECK_TYPEDEF applied, this function will
1261 type_name_no_tag_or_error (struct type
*type
)
1263 struct type
*saved_type
= type
;
1265 struct objfile
*objfile
;
1267 CHECK_TYPEDEF (type
);
1269 name
= type_name_no_tag (type
);
1273 name
= type_name_no_tag (saved_type
);
1274 objfile
= TYPE_OBJFILE (saved_type
);
1275 error (_("Invalid anonymous type %s [in module %s], GCC PR debug/47510 bug?"),
1276 name
? name
: "<anonymous>",
1277 objfile
? objfile_name (objfile
) : "<arch>");
1280 /* Lookup a typedef or primitive type named NAME, visible in lexical
1281 block BLOCK. If NOERR is nonzero, return zero if NAME is not
1282 suitably defined. */
1285 lookup_typename (const struct language_defn
*language
,
1286 struct gdbarch
*gdbarch
, const char *name
,
1287 const struct block
*block
, int noerr
)
1292 sym
= lookup_symbol (name
, block
, VAR_DOMAIN
, 0);
1293 if (sym
!= NULL
&& SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
1294 return SYMBOL_TYPE (sym
);
1296 type
= language_lookup_primitive_type_by_name (language
, gdbarch
, name
);
1302 error (_("No type named %s."), name
);
1306 lookup_unsigned_typename (const struct language_defn
*language
,
1307 struct gdbarch
*gdbarch
, const char *name
)
1309 char *uns
= alloca (strlen (name
) + 10);
1311 strcpy (uns
, "unsigned ");
1312 strcpy (uns
+ 9, name
);
1313 return lookup_typename (language
, gdbarch
, uns
, (struct block
*) NULL
, 0);
1317 lookup_signed_typename (const struct language_defn
*language
,
1318 struct gdbarch
*gdbarch
, const char *name
)
1321 char *uns
= alloca (strlen (name
) + 8);
1323 strcpy (uns
, "signed ");
1324 strcpy (uns
+ 7, name
);
1325 t
= lookup_typename (language
, gdbarch
, uns
, (struct block
*) NULL
, 1);
1326 /* If we don't find "signed FOO" just try again with plain "FOO". */
1329 return lookup_typename (language
, gdbarch
, name
, (struct block
*) NULL
, 0);
1332 /* Lookup a structure type named "struct NAME",
1333 visible in lexical block BLOCK. */
1336 lookup_struct (const char *name
, const struct block
*block
)
1340 sym
= lookup_symbol (name
, block
, STRUCT_DOMAIN
, 0);
1344 error (_("No struct type named %s."), name
);
1346 if (TYPE_CODE (SYMBOL_TYPE (sym
)) != TYPE_CODE_STRUCT
)
1348 error (_("This context has class, union or enum %s, not a struct."),
1351 return (SYMBOL_TYPE (sym
));
1354 /* Lookup a union type named "union NAME",
1355 visible in lexical block BLOCK. */
1358 lookup_union (const char *name
, const struct block
*block
)
1363 sym
= lookup_symbol (name
, block
, STRUCT_DOMAIN
, 0);
1366 error (_("No union type named %s."), name
);
1368 t
= SYMBOL_TYPE (sym
);
1370 if (TYPE_CODE (t
) == TYPE_CODE_UNION
)
1373 /* If we get here, it's not a union. */
1374 error (_("This context has class, struct or enum %s, not a union."),
1378 /* Lookup an enum type named "enum NAME",
1379 visible in lexical block BLOCK. */
1382 lookup_enum (const char *name
, const struct block
*block
)
1386 sym
= lookup_symbol (name
, block
, STRUCT_DOMAIN
, 0);
1389 error (_("No enum type named %s."), name
);
1391 if (TYPE_CODE (SYMBOL_TYPE (sym
)) != TYPE_CODE_ENUM
)
1393 error (_("This context has class, struct or union %s, not an enum."),
1396 return (SYMBOL_TYPE (sym
));
1399 /* Lookup a template type named "template NAME<TYPE>",
1400 visible in lexical block BLOCK. */
1403 lookup_template_type (char *name
, struct type
*type
,
1404 const struct block
*block
)
1407 char *nam
= (char *)
1408 alloca (strlen (name
) + strlen (TYPE_NAME (type
)) + 4);
1412 strcat (nam
, TYPE_NAME (type
));
1413 strcat (nam
, " >"); /* FIXME, extra space still introduced in gcc? */
1415 sym
= lookup_symbol (nam
, block
, VAR_DOMAIN
, 0);
1419 error (_("No template type named %s."), name
);
1421 if (TYPE_CODE (SYMBOL_TYPE (sym
)) != TYPE_CODE_STRUCT
)
1423 error (_("This context has class, union or enum %s, not a struct."),
1426 return (SYMBOL_TYPE (sym
));
1429 /* Given a type TYPE, lookup the type of the component of type named
1432 TYPE can be either a struct or union, or a pointer or reference to
1433 a struct or union. If it is a pointer or reference, its target
1434 type is automatically used. Thus '.' and '->' are interchangable,
1435 as specified for the definitions of the expression element types
1436 STRUCTOP_STRUCT and STRUCTOP_PTR.
1438 If NOERR is nonzero, return zero if NAME is not suitably defined.
1439 If NAME is the name of a baseclass type, return that type. */
1442 lookup_struct_elt_type (struct type
*type
, const char *name
, int noerr
)
1449 CHECK_TYPEDEF (type
);
1450 if (TYPE_CODE (type
) != TYPE_CODE_PTR
1451 && TYPE_CODE (type
) != TYPE_CODE_REF
)
1453 type
= TYPE_TARGET_TYPE (type
);
1456 if (TYPE_CODE (type
) != TYPE_CODE_STRUCT
1457 && TYPE_CODE (type
) != TYPE_CODE_UNION
)
1459 typename
= type_to_string (type
);
1460 make_cleanup (xfree
, typename
);
1461 error (_("Type %s is not a structure or union type."), typename
);
1465 /* FIXME: This change put in by Michael seems incorrect for the case
1466 where the structure tag name is the same as the member name.
1467 I.e. when doing "ptype bell->bar" for "struct foo { int bar; int
1468 foo; } bell;" Disabled by fnf. */
1472 typename
= type_name_no_tag (type
);
1473 if (typename
!= NULL
&& strcmp (typename
, name
) == 0)
1478 for (i
= TYPE_NFIELDS (type
) - 1; i
>= TYPE_N_BASECLASSES (type
); i
--)
1480 const char *t_field_name
= TYPE_FIELD_NAME (type
, i
);
1482 if (t_field_name
&& (strcmp_iw (t_field_name
, name
) == 0))
1484 return TYPE_FIELD_TYPE (type
, i
);
1486 else if (!t_field_name
|| *t_field_name
== '\0')
1488 struct type
*subtype
1489 = lookup_struct_elt_type (TYPE_FIELD_TYPE (type
, i
), name
, 1);
1491 if (subtype
!= NULL
)
1496 /* OK, it's not in this class. Recursively check the baseclasses. */
1497 for (i
= TYPE_N_BASECLASSES (type
) - 1; i
>= 0; i
--)
1501 t
= lookup_struct_elt_type (TYPE_BASECLASS (type
, i
), name
, 1);
1513 typename
= type_to_string (type
);
1514 make_cleanup (xfree
, typename
);
1515 error (_("Type %s has no component named %s."), typename
, name
);
1518 /* Store in *MAX the largest number representable by unsigned integer type
1522 get_unsigned_type_max (struct type
*type
, ULONGEST
*max
)
1526 CHECK_TYPEDEF (type
);
1527 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_INT
&& TYPE_UNSIGNED (type
));
1528 gdb_assert (TYPE_LENGTH (type
) <= sizeof (ULONGEST
));
1530 /* Written this way to avoid overflow. */
1531 n
= TYPE_LENGTH (type
) * TARGET_CHAR_BIT
;
1532 *max
= ((((ULONGEST
) 1 << (n
- 1)) - 1) << 1) | 1;
1535 /* Store in *MIN, *MAX the smallest and largest numbers representable by
1536 signed integer type TYPE. */
1539 get_signed_type_minmax (struct type
*type
, LONGEST
*min
, LONGEST
*max
)
1543 CHECK_TYPEDEF (type
);
1544 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_INT
&& !TYPE_UNSIGNED (type
));
1545 gdb_assert (TYPE_LENGTH (type
) <= sizeof (LONGEST
));
1547 n
= TYPE_LENGTH (type
) * TARGET_CHAR_BIT
;
1548 *min
= -((ULONGEST
) 1 << (n
- 1));
1549 *max
= ((ULONGEST
) 1 << (n
- 1)) - 1;
1552 /* Lookup the vptr basetype/fieldno values for TYPE.
1553 If found store vptr_basetype in *BASETYPEP if non-NULL, and return
1554 vptr_fieldno. Also, if found and basetype is from the same objfile,
1556 If not found, return -1 and ignore BASETYPEP.
1557 Callers should be aware that in some cases (for example,
1558 the type or one of its baseclasses is a stub type and we are
1559 debugging a .o file, or the compiler uses DWARF-2 and is not GCC),
1560 this function will not be able to find the
1561 virtual function table pointer, and vptr_fieldno will remain -1 and
1562 vptr_basetype will remain NULL or incomplete. */
1565 get_vptr_fieldno (struct type
*type
, struct type
**basetypep
)
1567 CHECK_TYPEDEF (type
);
1569 if (TYPE_VPTR_FIELDNO (type
) < 0)
1573 /* We must start at zero in case the first (and only) baseclass
1574 is virtual (and hence we cannot share the table pointer). */
1575 for (i
= 0; i
< TYPE_N_BASECLASSES (type
); i
++)
1577 struct type
*baseclass
= check_typedef (TYPE_BASECLASS (type
, i
));
1579 struct type
*basetype
;
1581 fieldno
= get_vptr_fieldno (baseclass
, &basetype
);
1584 /* If the type comes from a different objfile we can't cache
1585 it, it may have a different lifetime. PR 2384 */
1586 if (TYPE_OBJFILE (type
) == TYPE_OBJFILE (basetype
))
1588 TYPE_VPTR_FIELDNO (type
) = fieldno
;
1589 TYPE_VPTR_BASETYPE (type
) = basetype
;
1592 *basetypep
= basetype
;
1603 *basetypep
= TYPE_VPTR_BASETYPE (type
);
1604 return TYPE_VPTR_FIELDNO (type
);
1609 stub_noname_complaint (void)
1611 complaint (&symfile_complaints
, _("stub type has NULL name"));
1614 /* Worker for is_dynamic_type. */
1617 is_dynamic_type_internal (struct type
*type
, int top_level
)
1619 type
= check_typedef (type
);
1621 /* We only want to recognize references at the outermost level. */
1622 if (top_level
&& TYPE_CODE (type
) == TYPE_CODE_REF
)
1623 type
= check_typedef (TYPE_TARGET_TYPE (type
));
1625 switch (TYPE_CODE (type
))
1627 case TYPE_CODE_RANGE
:
1628 return !has_static_range (TYPE_RANGE_DATA (type
));
1630 case TYPE_CODE_ARRAY
:
1632 gdb_assert (TYPE_NFIELDS (type
) == 1);
1634 /* The array is dynamic if either the bounds are dynamic,
1635 or the elements it contains have a dynamic contents. */
1636 if (is_dynamic_type_internal (TYPE_INDEX_TYPE (type
), 0))
1638 return is_dynamic_type_internal (TYPE_TARGET_TYPE (type
), 0);
1641 case TYPE_CODE_STRUCT
:
1642 case TYPE_CODE_UNION
:
1646 for (i
= 0; i
< TYPE_NFIELDS (type
); ++i
)
1647 if (!field_is_static (&TYPE_FIELD (type
, i
))
1648 && is_dynamic_type_internal (TYPE_FIELD_TYPE (type
, i
), 0))
1657 /* See gdbtypes.h. */
1660 is_dynamic_type (struct type
*type
)
1662 return is_dynamic_type_internal (type
, 1);
1665 static struct type
*resolve_dynamic_type_internal (struct type
*type
,
1669 /* Given a dynamic range type (dyn_range_type), return a static version
1672 static struct type
*
1673 resolve_dynamic_range (struct type
*dyn_range_type
)
1676 struct type
*static_range_type
;
1677 const struct dynamic_prop
*prop
;
1678 const struct dwarf2_locexpr_baton
*baton
;
1679 struct dynamic_prop low_bound
, high_bound
;
1681 gdb_assert (TYPE_CODE (dyn_range_type
) == TYPE_CODE_RANGE
);
1683 prop
= &TYPE_RANGE_DATA (dyn_range_type
)->low
;
1684 if (dwarf2_evaluate_property (prop
, &value
))
1686 low_bound
.kind
= PROP_CONST
;
1687 low_bound
.data
.const_val
= value
;
1691 low_bound
.kind
= PROP_UNDEFINED
;
1692 low_bound
.data
.const_val
= 0;
1695 prop
= &TYPE_RANGE_DATA (dyn_range_type
)->high
;
1696 if (dwarf2_evaluate_property (prop
, &value
))
1698 high_bound
.kind
= PROP_CONST
;
1699 high_bound
.data
.const_val
= value
;
1701 if (TYPE_RANGE_DATA (dyn_range_type
)->flag_upper_bound_is_count
)
1702 high_bound
.data
.const_val
1703 = low_bound
.data
.const_val
+ high_bound
.data
.const_val
- 1;
1707 high_bound
.kind
= PROP_UNDEFINED
;
1708 high_bound
.data
.const_val
= 0;
1711 static_range_type
= create_range_type (copy_type (dyn_range_type
),
1712 TYPE_TARGET_TYPE (dyn_range_type
),
1713 &low_bound
, &high_bound
);
1714 TYPE_RANGE_DATA (static_range_type
)->flag_bound_evaluated
= 1;
1715 return static_range_type
;
1718 /* Resolves dynamic bound values of an array type TYPE to static ones.
1719 ADDRESS might be needed to resolve the subrange bounds, it is the location
1720 of the associated array. */
1722 static struct type
*
1723 resolve_dynamic_array (struct type
*type
)
1726 struct type
*elt_type
;
1727 struct type
*range_type
;
1728 struct type
*ary_dim
;
1730 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_ARRAY
);
1733 range_type
= check_typedef (TYPE_INDEX_TYPE (elt_type
));
1734 range_type
= resolve_dynamic_range (range_type
);
1736 ary_dim
= check_typedef (TYPE_TARGET_TYPE (elt_type
));
1738 if (ary_dim
!= NULL
&& TYPE_CODE (ary_dim
) == TYPE_CODE_ARRAY
)
1739 elt_type
= resolve_dynamic_array (TYPE_TARGET_TYPE (type
));
1741 elt_type
= TYPE_TARGET_TYPE (type
);
1743 return create_array_type (copy_type (type
),
1748 /* Resolve dynamic bounds of members of the union TYPE to static
1751 static struct type
*
1752 resolve_dynamic_union (struct type
*type
, CORE_ADDR addr
)
1754 struct type
*resolved_type
;
1756 unsigned int max_len
= 0;
1758 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_UNION
);
1760 resolved_type
= copy_type (type
);
1761 TYPE_FIELDS (resolved_type
)
1762 = TYPE_ALLOC (resolved_type
,
1763 TYPE_NFIELDS (resolved_type
) * sizeof (struct field
));
1764 memcpy (TYPE_FIELDS (resolved_type
),
1766 TYPE_NFIELDS (resolved_type
) * sizeof (struct field
));
1767 for (i
= 0; i
< TYPE_NFIELDS (resolved_type
); ++i
)
1771 if (field_is_static (&TYPE_FIELD (type
, i
)))
1774 t
= resolve_dynamic_type_internal (TYPE_FIELD_TYPE (resolved_type
, i
),
1776 TYPE_FIELD_TYPE (resolved_type
, i
) = t
;
1777 if (TYPE_LENGTH (t
) > max_len
)
1778 max_len
= TYPE_LENGTH (t
);
1781 TYPE_LENGTH (resolved_type
) = max_len
;
1782 return resolved_type
;
1785 /* Resolve dynamic bounds of members of the struct TYPE to static
1788 static struct type
*
1789 resolve_dynamic_struct (struct type
*type
, CORE_ADDR addr
)
1791 struct type
*resolved_type
;
1793 int vla_field
= TYPE_NFIELDS (type
) - 1;
1795 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_STRUCT
);
1796 gdb_assert (TYPE_NFIELDS (type
) > 0);
1798 resolved_type
= copy_type (type
);
1799 TYPE_FIELDS (resolved_type
)
1800 = TYPE_ALLOC (resolved_type
,
1801 TYPE_NFIELDS (resolved_type
) * sizeof (struct field
));
1802 memcpy (TYPE_FIELDS (resolved_type
),
1804 TYPE_NFIELDS (resolved_type
) * sizeof (struct field
));
1805 for (i
= 0; i
< TYPE_NFIELDS (resolved_type
); ++i
)
1809 if (field_is_static (&TYPE_FIELD (type
, i
)))
1812 t
= resolve_dynamic_type_internal (TYPE_FIELD_TYPE (resolved_type
, i
),
1815 /* This is a bit odd. We do not support a VLA in any position
1816 of a struct except for the last. GCC does have an extension
1817 that allows a VLA in the middle of a structure, but the DWARF
1818 it emits is relatively useless to us, so we can't represent
1819 such a type properly -- and even if we could, we do not have
1820 enough information to redo structure layout anyway.
1821 Nevertheless, we check all the fields in case something odd
1822 slips through, since it's better to see an error than
1823 incorrect results. */
1824 if (t
!= TYPE_FIELD_TYPE (resolved_type
, i
)
1826 error (_("Attempt to resolve a variably-sized type which appears "
1827 "in the interior of a structure type"));
1829 TYPE_FIELD_TYPE (resolved_type
, i
) = t
;
1832 /* Due to the above restrictions we can successfully compute
1833 the size of the resulting structure here, as the offset of
1834 the final field plus its size. */
1835 TYPE_LENGTH (resolved_type
)
1836 = (TYPE_FIELD_BITPOS (resolved_type
, vla_field
) / TARGET_CHAR_BIT
1837 + TYPE_LENGTH (TYPE_FIELD_TYPE (resolved_type
, vla_field
)));
1838 return resolved_type
;
1841 /* Worker for resolved_dynamic_type. */
1843 static struct type
*
1844 resolve_dynamic_type_internal (struct type
*type
, CORE_ADDR addr
,
1847 struct type
*real_type
= check_typedef (type
);
1848 struct type
*resolved_type
= type
;
1850 if (!is_dynamic_type_internal (real_type
, top_level
))
1853 switch (TYPE_CODE (type
))
1855 case TYPE_CODE_TYPEDEF
:
1856 resolved_type
= copy_type (type
);
1857 TYPE_TARGET_TYPE (resolved_type
)
1858 = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (type
), addr
,
1864 CORE_ADDR target_addr
= read_memory_typed_address (addr
, type
);
1866 resolved_type
= copy_type (type
);
1867 TYPE_TARGET_TYPE (resolved_type
)
1868 = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (type
),
1869 target_addr
, top_level
);
1873 case TYPE_CODE_ARRAY
:
1874 resolved_type
= resolve_dynamic_array (type
);
1877 case TYPE_CODE_RANGE
:
1878 resolved_type
= resolve_dynamic_range (type
);
1881 case TYPE_CODE_UNION
:
1882 resolved_type
= resolve_dynamic_union (type
, addr
);
1885 case TYPE_CODE_STRUCT
:
1886 resolved_type
= resolve_dynamic_struct (type
, addr
);
1890 return resolved_type
;
1893 /* See gdbtypes.h */
1896 resolve_dynamic_type (struct type
*type
, CORE_ADDR addr
)
1898 return resolve_dynamic_type_internal (type
, addr
, 1);
1901 /* Find the real type of TYPE. This function returns the real type,
1902 after removing all layers of typedefs, and completing opaque or stub
1903 types. Completion changes the TYPE argument, but stripping of
1906 Instance flags (e.g. const/volatile) are preserved as typedefs are
1907 stripped. If necessary a new qualified form of the underlying type
1910 NOTE: This will return a typedef if TYPE_TARGET_TYPE for the typedef has
1911 not been computed and we're either in the middle of reading symbols, or
1912 there was no name for the typedef in the debug info.
1914 NOTE: Lookup of opaque types can throw errors for invalid symbol files.
1915 QUITs in the symbol reading code can also throw.
1916 Thus this function can throw an exception.
1918 If TYPE is a TYPE_CODE_TYPEDEF, its length is updated to the length of
1921 If this is a stubbed struct (i.e. declared as struct foo *), see if
1922 we can find a full definition in some other file. If so, copy this
1923 definition, so we can use it in future. There used to be a comment
1924 (but not any code) that if we don't find a full definition, we'd
1925 set a flag so we don't spend time in the future checking the same
1926 type. That would be a mistake, though--we might load in more
1927 symbols which contain a full definition for the type. */
1930 check_typedef (struct type
*type
)
1932 struct type
*orig_type
= type
;
1933 /* While we're removing typedefs, we don't want to lose qualifiers.
1934 E.g., const/volatile. */
1935 int instance_flags
= TYPE_INSTANCE_FLAGS (type
);
1939 while (TYPE_CODE (type
) == TYPE_CODE_TYPEDEF
)
1941 if (!TYPE_TARGET_TYPE (type
))
1946 /* It is dangerous to call lookup_symbol if we are currently
1947 reading a symtab. Infinite recursion is one danger. */
1948 if (currently_reading_symtab
)
1949 return make_qualified_type (type
, instance_flags
, NULL
);
1951 name
= type_name_no_tag (type
);
1952 /* FIXME: shouldn't we separately check the TYPE_NAME and
1953 the TYPE_TAG_NAME, and look in STRUCT_DOMAIN and/or
1954 VAR_DOMAIN as appropriate? (this code was written before
1955 TYPE_NAME and TYPE_TAG_NAME were separate). */
1958 stub_noname_complaint ();
1959 return make_qualified_type (type
, instance_flags
, NULL
);
1961 sym
= lookup_symbol (name
, 0, STRUCT_DOMAIN
, 0);
1963 TYPE_TARGET_TYPE (type
) = SYMBOL_TYPE (sym
);
1964 else /* TYPE_CODE_UNDEF */
1965 TYPE_TARGET_TYPE (type
) = alloc_type_arch (get_type_arch (type
));
1967 type
= TYPE_TARGET_TYPE (type
);
1969 /* Preserve the instance flags as we traverse down the typedef chain.
1971 Handling address spaces/classes is nasty, what do we do if there's a
1973 E.g., what if an outer typedef marks the type as class_1 and an inner
1974 typedef marks the type as class_2?
1975 This is the wrong place to do such error checking. We leave it to
1976 the code that created the typedef in the first place to flag the
1977 error. We just pick the outer address space (akin to letting the
1978 outer cast in a chain of casting win), instead of assuming
1979 "it can't happen". */
1981 const int ALL_SPACES
= (TYPE_INSTANCE_FLAG_CODE_SPACE
1982 | TYPE_INSTANCE_FLAG_DATA_SPACE
);
1983 const int ALL_CLASSES
= TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL
;
1984 int new_instance_flags
= TYPE_INSTANCE_FLAGS (type
);
1986 /* Treat code vs data spaces and address classes separately. */
1987 if ((instance_flags
& ALL_SPACES
) != 0)
1988 new_instance_flags
&= ~ALL_SPACES
;
1989 if ((instance_flags
& ALL_CLASSES
) != 0)
1990 new_instance_flags
&= ~ALL_CLASSES
;
1992 instance_flags
|= new_instance_flags
;
1996 /* If this is a struct/class/union with no fields, then check
1997 whether a full definition exists somewhere else. This is for
1998 systems where a type definition with no fields is issued for such
1999 types, instead of identifying them as stub types in the first
2002 if (TYPE_IS_OPAQUE (type
)
2003 && opaque_type_resolution
2004 && !currently_reading_symtab
)
2006 const char *name
= type_name_no_tag (type
);
2007 struct type
*newtype
;
2011 stub_noname_complaint ();
2012 return make_qualified_type (type
, instance_flags
, NULL
);
2014 newtype
= lookup_transparent_type (name
);
2018 /* If the resolved type and the stub are in the same
2019 objfile, then replace the stub type with the real deal.
2020 But if they're in separate objfiles, leave the stub
2021 alone; we'll just look up the transparent type every time
2022 we call check_typedef. We can't create pointers between
2023 types allocated to different objfiles, since they may
2024 have different lifetimes. Trying to copy NEWTYPE over to
2025 TYPE's objfile is pointless, too, since you'll have to
2026 move over any other types NEWTYPE refers to, which could
2027 be an unbounded amount of stuff. */
2028 if (TYPE_OBJFILE (newtype
) == TYPE_OBJFILE (type
))
2029 type
= make_qualified_type (newtype
,
2030 TYPE_INSTANCE_FLAGS (type
),
2036 /* Otherwise, rely on the stub flag being set for opaque/stubbed
2038 else if (TYPE_STUB (type
) && !currently_reading_symtab
)
2040 const char *name
= type_name_no_tag (type
);
2041 /* FIXME: shouldn't we separately check the TYPE_NAME and the
2042 TYPE_TAG_NAME, and look in STRUCT_DOMAIN and/or VAR_DOMAIN
2043 as appropriate? (this code was written before TYPE_NAME and
2044 TYPE_TAG_NAME were separate). */
2049 stub_noname_complaint ();
2050 return make_qualified_type (type
, instance_flags
, NULL
);
2052 sym
= lookup_symbol (name
, 0, STRUCT_DOMAIN
, 0);
2055 /* Same as above for opaque types, we can replace the stub
2056 with the complete type only if they are in the same
2058 if (TYPE_OBJFILE (SYMBOL_TYPE(sym
)) == TYPE_OBJFILE (type
))
2059 type
= make_qualified_type (SYMBOL_TYPE (sym
),
2060 TYPE_INSTANCE_FLAGS (type
),
2063 type
= SYMBOL_TYPE (sym
);
2067 if (TYPE_TARGET_STUB (type
))
2069 struct type
*range_type
;
2070 struct type
*target_type
= check_typedef (TYPE_TARGET_TYPE (type
));
2072 if (TYPE_STUB (target_type
) || TYPE_TARGET_STUB (target_type
))
2074 /* Nothing we can do. */
2076 else if (TYPE_CODE (type
) == TYPE_CODE_RANGE
)
2078 TYPE_LENGTH (type
) = TYPE_LENGTH (target_type
);
2079 TYPE_TARGET_STUB (type
) = 0;
2083 type
= make_qualified_type (type
, instance_flags
, NULL
);
2085 /* Cache TYPE_LENGTH for future use. */
2086 TYPE_LENGTH (orig_type
) = TYPE_LENGTH (type
);
2091 /* Parse a type expression in the string [P..P+LENGTH). If an error
2092 occurs, silently return a void type. */
2094 static struct type
*
2095 safe_parse_type (struct gdbarch
*gdbarch
, char *p
, int length
)
2097 struct ui_file
*saved_gdb_stderr
;
2098 struct type
*type
= NULL
; /* Initialize to keep gcc happy. */
2099 volatile struct gdb_exception except
;
2101 /* Suppress error messages. */
2102 saved_gdb_stderr
= gdb_stderr
;
2103 gdb_stderr
= ui_file_new ();
2105 /* Call parse_and_eval_type() without fear of longjmp()s. */
2106 TRY_CATCH (except
, RETURN_MASK_ERROR
)
2108 type
= parse_and_eval_type (p
, length
);
2111 if (except
.reason
< 0)
2112 type
= builtin_type (gdbarch
)->builtin_void
;
2114 /* Stop suppressing error messages. */
2115 ui_file_delete (gdb_stderr
);
2116 gdb_stderr
= saved_gdb_stderr
;
2121 /* Ugly hack to convert method stubs into method types.
2123 He ain't kiddin'. This demangles the name of the method into a
2124 string including argument types, parses out each argument type,
2125 generates a string casting a zero to that type, evaluates the
2126 string, and stuffs the resulting type into an argtype vector!!!
2127 Then it knows the type of the whole function (including argument
2128 types for overloading), which info used to be in the stab's but was
2129 removed to hack back the space required for them. */
2132 check_stub_method (struct type
*type
, int method_id
, int signature_id
)
2134 struct gdbarch
*gdbarch
= get_type_arch (type
);
2136 char *mangled_name
= gdb_mangle_name (type
, method_id
, signature_id
);
2137 char *demangled_name
= gdb_demangle (mangled_name
,
2138 DMGL_PARAMS
| DMGL_ANSI
);
2139 char *argtypetext
, *p
;
2140 int depth
= 0, argcount
= 1;
2141 struct field
*argtypes
;
2144 /* Make sure we got back a function string that we can use. */
2146 p
= strchr (demangled_name
, '(');
2150 if (demangled_name
== NULL
|| p
== NULL
)
2151 error (_("Internal: Cannot demangle mangled name `%s'."),
2154 /* Now, read in the parameters that define this type. */
2159 if (*p
== '(' || *p
== '<')
2163 else if (*p
== ')' || *p
== '>')
2167 else if (*p
== ',' && depth
== 0)
2175 /* If we read one argument and it was ``void'', don't count it. */
2176 if (strncmp (argtypetext
, "(void)", 6) == 0)
2179 /* We need one extra slot, for the THIS pointer. */
2181 argtypes
= (struct field
*)
2182 TYPE_ALLOC (type
, (argcount
+ 1) * sizeof (struct field
));
2185 /* Add THIS pointer for non-static methods. */
2186 f
= TYPE_FN_FIELDLIST1 (type
, method_id
);
2187 if (TYPE_FN_FIELD_STATIC_P (f
, signature_id
))
2191 argtypes
[0].type
= lookup_pointer_type (type
);
2195 if (*p
!= ')') /* () means no args, skip while. */
2200 if (depth
<= 0 && (*p
== ',' || *p
== ')'))
2202 /* Avoid parsing of ellipsis, they will be handled below.
2203 Also avoid ``void'' as above. */
2204 if (strncmp (argtypetext
, "...", p
- argtypetext
) != 0
2205 && strncmp (argtypetext
, "void", p
- argtypetext
) != 0)
2207 argtypes
[argcount
].type
=
2208 safe_parse_type (gdbarch
, argtypetext
, p
- argtypetext
);
2211 argtypetext
= p
+ 1;
2214 if (*p
== '(' || *p
== '<')
2218 else if (*p
== ')' || *p
== '>')
2227 TYPE_FN_FIELD_PHYSNAME (f
, signature_id
) = mangled_name
;
2229 /* Now update the old "stub" type into a real type. */
2230 mtype
= TYPE_FN_FIELD_TYPE (f
, signature_id
);
2231 TYPE_DOMAIN_TYPE (mtype
) = type
;
2232 TYPE_FIELDS (mtype
) = argtypes
;
2233 TYPE_NFIELDS (mtype
) = argcount
;
2234 TYPE_STUB (mtype
) = 0;
2235 TYPE_FN_FIELD_STUB (f
, signature_id
) = 0;
2237 TYPE_VARARGS (mtype
) = 1;
2239 xfree (demangled_name
);
2242 /* This is the external interface to check_stub_method, above. This
2243 function unstubs all of the signatures for TYPE's METHOD_ID method
2244 name. After calling this function TYPE_FN_FIELD_STUB will be
2245 cleared for each signature and TYPE_FN_FIELDLIST_NAME will be
2248 This function unfortunately can not die until stabs do. */
2251 check_stub_method_group (struct type
*type
, int method_id
)
2253 int len
= TYPE_FN_FIELDLIST_LENGTH (type
, method_id
);
2254 struct fn_field
*f
= TYPE_FN_FIELDLIST1 (type
, method_id
);
2255 int j
, found_stub
= 0;
2257 for (j
= 0; j
< len
; j
++)
2258 if (TYPE_FN_FIELD_STUB (f
, j
))
2261 check_stub_method (type
, method_id
, j
);
2264 /* GNU v3 methods with incorrect names were corrected when we read
2265 in type information, because it was cheaper to do it then. The
2266 only GNU v2 methods with incorrect method names are operators and
2267 destructors; destructors were also corrected when we read in type
2270 Therefore the only thing we need to handle here are v2 operator
2272 if (found_stub
&& strncmp (TYPE_FN_FIELD_PHYSNAME (f
, 0), "_Z", 2) != 0)
2275 char dem_opname
[256];
2277 ret
= cplus_demangle_opname (TYPE_FN_FIELDLIST_NAME (type
,
2279 dem_opname
, DMGL_ANSI
);
2281 ret
= cplus_demangle_opname (TYPE_FN_FIELDLIST_NAME (type
,
2285 TYPE_FN_FIELDLIST_NAME (type
, method_id
) = xstrdup (dem_opname
);
2289 /* Ensure it is in .rodata (if available) by workarounding GCC PR 44690. */
2290 const struct cplus_struct_type cplus_struct_default
= { };
2293 allocate_cplus_struct_type (struct type
*type
)
2295 if (HAVE_CPLUS_STRUCT (type
))
2296 /* Structure was already allocated. Nothing more to do. */
2299 TYPE_SPECIFIC_FIELD (type
) = TYPE_SPECIFIC_CPLUS_STUFF
;
2300 TYPE_RAW_CPLUS_SPECIFIC (type
) = (struct cplus_struct_type
*)
2301 TYPE_ALLOC (type
, sizeof (struct cplus_struct_type
));
2302 *(TYPE_RAW_CPLUS_SPECIFIC (type
)) = cplus_struct_default
;
2305 const struct gnat_aux_type gnat_aux_default
=
2308 /* Set the TYPE's type-specific kind to TYPE_SPECIFIC_GNAT_STUFF,
2309 and allocate the associated gnat-specific data. The gnat-specific
2310 data is also initialized to gnat_aux_default. */
2313 allocate_gnat_aux_type (struct type
*type
)
2315 TYPE_SPECIFIC_FIELD (type
) = TYPE_SPECIFIC_GNAT_STUFF
;
2316 TYPE_GNAT_SPECIFIC (type
) = (struct gnat_aux_type
*)
2317 TYPE_ALLOC (type
, sizeof (struct gnat_aux_type
));
2318 *(TYPE_GNAT_SPECIFIC (type
)) = gnat_aux_default
;
2321 /* Helper function to initialize the standard scalar types.
2323 If NAME is non-NULL, then it is used to initialize the type name.
2324 Note that NAME is not copied; it is required to have a lifetime at
2325 least as long as OBJFILE. */
2328 init_type (enum type_code code
, int length
, int flags
,
2329 const char *name
, struct objfile
*objfile
)
2333 type
= alloc_type (objfile
);
2334 TYPE_CODE (type
) = code
;
2335 TYPE_LENGTH (type
) = length
;
2337 gdb_assert (!(flags
& (TYPE_FLAG_MIN
- 1)));
2338 if (flags
& TYPE_FLAG_UNSIGNED
)
2339 TYPE_UNSIGNED (type
) = 1;
2340 if (flags
& TYPE_FLAG_NOSIGN
)
2341 TYPE_NOSIGN (type
) = 1;
2342 if (flags
& TYPE_FLAG_STUB
)
2343 TYPE_STUB (type
) = 1;
2344 if (flags
& TYPE_FLAG_TARGET_STUB
)
2345 TYPE_TARGET_STUB (type
) = 1;
2346 if (flags
& TYPE_FLAG_STATIC
)
2347 TYPE_STATIC (type
) = 1;
2348 if (flags
& TYPE_FLAG_PROTOTYPED
)
2349 TYPE_PROTOTYPED (type
) = 1;
2350 if (flags
& TYPE_FLAG_INCOMPLETE
)
2351 TYPE_INCOMPLETE (type
) = 1;
2352 if (flags
& TYPE_FLAG_VARARGS
)
2353 TYPE_VARARGS (type
) = 1;
2354 if (flags
& TYPE_FLAG_VECTOR
)
2355 TYPE_VECTOR (type
) = 1;
2356 if (flags
& TYPE_FLAG_STUB_SUPPORTED
)
2357 TYPE_STUB_SUPPORTED (type
) = 1;
2358 if (flags
& TYPE_FLAG_FIXED_INSTANCE
)
2359 TYPE_FIXED_INSTANCE (type
) = 1;
2360 if (flags
& TYPE_FLAG_GNU_IFUNC
)
2361 TYPE_GNU_IFUNC (type
) = 1;
2363 TYPE_NAME (type
) = name
;
2367 if (name
&& strcmp (name
, "char") == 0)
2368 TYPE_NOSIGN (type
) = 1;
2372 case TYPE_CODE_STRUCT
:
2373 case TYPE_CODE_UNION
:
2374 case TYPE_CODE_NAMESPACE
:
2375 INIT_CPLUS_SPECIFIC (type
);
2378 TYPE_SPECIFIC_FIELD (type
) = TYPE_SPECIFIC_FLOATFORMAT
;
2380 case TYPE_CODE_FUNC
:
2381 INIT_FUNC_SPECIFIC (type
);
2387 /* Queries on types. */
2390 can_dereference (struct type
*t
)
2392 /* FIXME: Should we return true for references as well as
2397 && TYPE_CODE (t
) == TYPE_CODE_PTR
2398 && TYPE_CODE (TYPE_TARGET_TYPE (t
)) != TYPE_CODE_VOID
);
2402 is_integral_type (struct type
*t
)
2407 && ((TYPE_CODE (t
) == TYPE_CODE_INT
)
2408 || (TYPE_CODE (t
) == TYPE_CODE_ENUM
)
2409 || (TYPE_CODE (t
) == TYPE_CODE_FLAGS
)
2410 || (TYPE_CODE (t
) == TYPE_CODE_CHAR
)
2411 || (TYPE_CODE (t
) == TYPE_CODE_RANGE
)
2412 || (TYPE_CODE (t
) == TYPE_CODE_BOOL
)));
2415 /* Return true if TYPE is scalar. */
2418 is_scalar_type (struct type
*type
)
2420 CHECK_TYPEDEF (type
);
2422 switch (TYPE_CODE (type
))
2424 case TYPE_CODE_ARRAY
:
2425 case TYPE_CODE_STRUCT
:
2426 case TYPE_CODE_UNION
:
2428 case TYPE_CODE_STRING
:
2435 /* Return true if T is scalar, or a composite type which in practice has
2436 the memory layout of a scalar type. E.g., an array or struct with only
2437 one scalar element inside it, or a union with only scalar elements. */
2440 is_scalar_type_recursive (struct type
*t
)
2444 if (is_scalar_type (t
))
2446 /* Are we dealing with an array or string of known dimensions? */
2447 else if ((TYPE_CODE (t
) == TYPE_CODE_ARRAY
2448 || TYPE_CODE (t
) == TYPE_CODE_STRING
) && TYPE_NFIELDS (t
) == 1
2449 && TYPE_CODE (TYPE_INDEX_TYPE (t
)) == TYPE_CODE_RANGE
)
2451 LONGEST low_bound
, high_bound
;
2452 struct type
*elt_type
= check_typedef (TYPE_TARGET_TYPE (t
));
2454 get_discrete_bounds (TYPE_INDEX_TYPE (t
), &low_bound
, &high_bound
);
2456 return high_bound
== low_bound
&& is_scalar_type_recursive (elt_type
);
2458 /* Are we dealing with a struct with one element? */
2459 else if (TYPE_CODE (t
) == TYPE_CODE_STRUCT
&& TYPE_NFIELDS (t
) == 1)
2460 return is_scalar_type_recursive (TYPE_FIELD_TYPE (t
, 0));
2461 else if (TYPE_CODE (t
) == TYPE_CODE_UNION
)
2463 int i
, n
= TYPE_NFIELDS (t
);
2465 /* If all elements of the union are scalar, then the union is scalar. */
2466 for (i
= 0; i
< n
; i
++)
2467 if (!is_scalar_type_recursive (TYPE_FIELD_TYPE (t
, i
)))
2476 /* A helper function which returns true if types A and B represent the
2477 "same" class type. This is true if the types have the same main
2478 type, or the same name. */
2481 class_types_same_p (const struct type
*a
, const struct type
*b
)
2483 return (TYPE_MAIN_TYPE (a
) == TYPE_MAIN_TYPE (b
)
2484 || (TYPE_NAME (a
) && TYPE_NAME (b
)
2485 && !strcmp (TYPE_NAME (a
), TYPE_NAME (b
))));
2488 /* If BASE is an ancestor of DCLASS return the distance between them.
2489 otherwise return -1;
2493 class B: public A {};
2494 class C: public B {};
2497 distance_to_ancestor (A, A, 0) = 0
2498 distance_to_ancestor (A, B, 0) = 1
2499 distance_to_ancestor (A, C, 0) = 2
2500 distance_to_ancestor (A, D, 0) = 3
2502 If PUBLIC is 1 then only public ancestors are considered,
2503 and the function returns the distance only if BASE is a public ancestor
2507 distance_to_ancestor (A, D, 1) = -1. */
2510 distance_to_ancestor (struct type
*base
, struct type
*dclass
, int public)
2515 CHECK_TYPEDEF (base
);
2516 CHECK_TYPEDEF (dclass
);
2518 if (class_types_same_p (base
, dclass
))
2521 for (i
= 0; i
< TYPE_N_BASECLASSES (dclass
); i
++)
2523 if (public && ! BASETYPE_VIA_PUBLIC (dclass
, i
))
2526 d
= distance_to_ancestor (base
, TYPE_BASECLASS (dclass
, i
), public);
2534 /* Check whether BASE is an ancestor or base class or DCLASS
2535 Return 1 if so, and 0 if not.
2536 Note: If BASE and DCLASS are of the same type, this function
2537 will return 1. So for some class A, is_ancestor (A, A) will
2541 is_ancestor (struct type
*base
, struct type
*dclass
)
2543 return distance_to_ancestor (base
, dclass
, 0) >= 0;
2546 /* Like is_ancestor, but only returns true when BASE is a public
2547 ancestor of DCLASS. */
2550 is_public_ancestor (struct type
*base
, struct type
*dclass
)
2552 return distance_to_ancestor (base
, dclass
, 1) >= 0;
2555 /* A helper function for is_unique_ancestor. */
2558 is_unique_ancestor_worker (struct type
*base
, struct type
*dclass
,
2560 const gdb_byte
*valaddr
, int embedded_offset
,
2561 CORE_ADDR address
, struct value
*val
)
2565 CHECK_TYPEDEF (base
);
2566 CHECK_TYPEDEF (dclass
);
2568 for (i
= 0; i
< TYPE_N_BASECLASSES (dclass
) && count
< 2; ++i
)
2573 iter
= check_typedef (TYPE_BASECLASS (dclass
, i
));
2575 this_offset
= baseclass_offset (dclass
, i
, valaddr
, embedded_offset
,
2578 if (class_types_same_p (base
, iter
))
2580 /* If this is the first subclass, set *OFFSET and set count
2581 to 1. Otherwise, if this is at the same offset as
2582 previous instances, do nothing. Otherwise, increment
2586 *offset
= this_offset
;
2589 else if (this_offset
== *offset
)
2597 count
+= is_unique_ancestor_worker (base
, iter
, offset
,
2599 embedded_offset
+ this_offset
,
2606 /* Like is_ancestor, but only returns true if BASE is a unique base
2607 class of the type of VAL. */
2610 is_unique_ancestor (struct type
*base
, struct value
*val
)
2614 return is_unique_ancestor_worker (base
, value_type (val
), &offset
,
2615 value_contents_for_printing (val
),
2616 value_embedded_offset (val
),
2617 value_address (val
), val
) == 1;
2621 /* Overload resolution. */
2623 /* Return the sum of the rank of A with the rank of B. */
2626 sum_ranks (struct rank a
, struct rank b
)
2629 c
.rank
= a
.rank
+ b
.rank
;
2630 c
.subrank
= a
.subrank
+ b
.subrank
;
2634 /* Compare rank A and B and return:
2636 1 if a is better than b
2637 -1 if b is better than a. */
2640 compare_ranks (struct rank a
, struct rank b
)
2642 if (a
.rank
== b
.rank
)
2644 if (a
.subrank
== b
.subrank
)
2646 if (a
.subrank
< b
.subrank
)
2648 if (a
.subrank
> b
.subrank
)
2652 if (a
.rank
< b
.rank
)
2655 /* a.rank > b.rank */
2659 /* Functions for overload resolution begin here. */
2661 /* Compare two badness vectors A and B and return the result.
2662 0 => A and B are identical
2663 1 => A and B are incomparable
2664 2 => A is better than B
2665 3 => A is worse than B */
2668 compare_badness (struct badness_vector
*a
, struct badness_vector
*b
)
2672 short found_pos
= 0; /* any positives in c? */
2673 short found_neg
= 0; /* any negatives in c? */
2675 /* differing lengths => incomparable */
2676 if (a
->length
!= b
->length
)
2679 /* Subtract b from a */
2680 for (i
= 0; i
< a
->length
; i
++)
2682 tmp
= compare_ranks (b
->rank
[i
], a
->rank
[i
]);
2692 return 1; /* incomparable */
2694 return 3; /* A > B */
2700 return 2; /* A < B */
2702 return 0; /* A == B */
2706 /* Rank a function by comparing its parameter types (PARMS, length
2707 NPARMS), to the types of an argument list (ARGS, length NARGS).
2708 Return a pointer to a badness vector. This has NARGS + 1
2711 struct badness_vector
*
2712 rank_function (struct type
**parms
, int nparms
,
2713 struct value
**args
, int nargs
)
2716 struct badness_vector
*bv
;
2717 int min_len
= nparms
< nargs
? nparms
: nargs
;
2719 bv
= xmalloc (sizeof (struct badness_vector
));
2720 bv
->length
= nargs
+ 1; /* add 1 for the length-match rank. */
2721 bv
->rank
= XNEWVEC (struct rank
, nargs
+ 1);
2723 /* First compare the lengths of the supplied lists.
2724 If there is a mismatch, set it to a high value. */
2726 /* pai/1997-06-03 FIXME: when we have debug info about default
2727 arguments and ellipsis parameter lists, we should consider those
2728 and rank the length-match more finely. */
2730 LENGTH_MATCH (bv
) = (nargs
!= nparms
)
2731 ? LENGTH_MISMATCH_BADNESS
2732 : EXACT_MATCH_BADNESS
;
2734 /* Now rank all the parameters of the candidate function. */
2735 for (i
= 1; i
<= min_len
; i
++)
2736 bv
->rank
[i
] = rank_one_type (parms
[i
- 1], value_type (args
[i
- 1]),
2739 /* If more arguments than parameters, add dummy entries. */
2740 for (i
= min_len
+ 1; i
<= nargs
; i
++)
2741 bv
->rank
[i
] = TOO_FEW_PARAMS_BADNESS
;
2746 /* Compare the names of two integer types, assuming that any sign
2747 qualifiers have been checked already. We do it this way because
2748 there may be an "int" in the name of one of the types. */
2751 integer_types_same_name_p (const char *first
, const char *second
)
2753 int first_p
, second_p
;
2755 /* If both are shorts, return 1; if neither is a short, keep
2757 first_p
= (strstr (first
, "short") != NULL
);
2758 second_p
= (strstr (second
, "short") != NULL
);
2759 if (first_p
&& second_p
)
2761 if (first_p
|| second_p
)
2764 /* Likewise for long. */
2765 first_p
= (strstr (first
, "long") != NULL
);
2766 second_p
= (strstr (second
, "long") != NULL
);
2767 if (first_p
&& second_p
)
2769 if (first_p
|| second_p
)
2772 /* Likewise for char. */
2773 first_p
= (strstr (first
, "char") != NULL
);
2774 second_p
= (strstr (second
, "char") != NULL
);
2775 if (first_p
&& second_p
)
2777 if (first_p
|| second_p
)
2780 /* They must both be ints. */
2784 /* Compares type A to type B returns 1 if the represent the same type
2788 types_equal (struct type
*a
, struct type
*b
)
2790 /* Identical type pointers. */
2791 /* However, this still doesn't catch all cases of same type for b
2792 and a. The reason is that builtin types are different from
2793 the same ones constructed from the object. */
2797 /* Resolve typedefs */
2798 if (TYPE_CODE (a
) == TYPE_CODE_TYPEDEF
)
2799 a
= check_typedef (a
);
2800 if (TYPE_CODE (b
) == TYPE_CODE_TYPEDEF
)
2801 b
= check_typedef (b
);
2803 /* If after resolving typedefs a and b are not of the same type
2804 code then they are not equal. */
2805 if (TYPE_CODE (a
) != TYPE_CODE (b
))
2808 /* If a and b are both pointers types or both reference types then
2809 they are equal of the same type iff the objects they refer to are
2810 of the same type. */
2811 if (TYPE_CODE (a
) == TYPE_CODE_PTR
2812 || TYPE_CODE (a
) == TYPE_CODE_REF
)
2813 return types_equal (TYPE_TARGET_TYPE (a
),
2814 TYPE_TARGET_TYPE (b
));
2816 /* Well, damnit, if the names are exactly the same, I'll say they
2817 are exactly the same. This happens when we generate method
2818 stubs. The types won't point to the same address, but they
2819 really are the same. */
2821 if (TYPE_NAME (a
) && TYPE_NAME (b
)
2822 && strcmp (TYPE_NAME (a
), TYPE_NAME (b
)) == 0)
2825 /* Check if identical after resolving typedefs. */
2829 /* Two function types are equal if their argument and return types
2831 if (TYPE_CODE (a
) == TYPE_CODE_FUNC
)
2835 if (TYPE_NFIELDS (a
) != TYPE_NFIELDS (b
))
2838 if (!types_equal (TYPE_TARGET_TYPE (a
), TYPE_TARGET_TYPE (b
)))
2841 for (i
= 0; i
< TYPE_NFIELDS (a
); ++i
)
2842 if (!types_equal (TYPE_FIELD_TYPE (a
, i
), TYPE_FIELD_TYPE (b
, i
)))
2851 /* Deep comparison of types. */
2853 /* An entry in the type-equality bcache. */
2855 typedef struct type_equality_entry
2857 struct type
*type1
, *type2
;
2858 } type_equality_entry_d
;
2860 DEF_VEC_O (type_equality_entry_d
);
2862 /* A helper function to compare two strings. Returns 1 if they are
2863 the same, 0 otherwise. Handles NULLs properly. */
2866 compare_maybe_null_strings (const char *s
, const char *t
)
2868 if (s
== NULL
&& t
!= NULL
)
2870 else if (s
!= NULL
&& t
== NULL
)
2872 else if (s
== NULL
&& t
== NULL
)
2874 return strcmp (s
, t
) == 0;
2877 /* A helper function for check_types_worklist that checks two types for
2878 "deep" equality. Returns non-zero if the types are considered the
2879 same, zero otherwise. */
2882 check_types_equal (struct type
*type1
, struct type
*type2
,
2883 VEC (type_equality_entry_d
) **worklist
)
2885 CHECK_TYPEDEF (type1
);
2886 CHECK_TYPEDEF (type2
);
2891 if (TYPE_CODE (type1
) != TYPE_CODE (type2
)
2892 || TYPE_LENGTH (type1
) != TYPE_LENGTH (type2
)
2893 || TYPE_UNSIGNED (type1
) != TYPE_UNSIGNED (type2
)
2894 || TYPE_NOSIGN (type1
) != TYPE_NOSIGN (type2
)
2895 || TYPE_VARARGS (type1
) != TYPE_VARARGS (type2
)
2896 || TYPE_VECTOR (type1
) != TYPE_VECTOR (type2
)
2897 || TYPE_NOTTEXT (type1
) != TYPE_NOTTEXT (type2
)
2898 || TYPE_INSTANCE_FLAGS (type1
) != TYPE_INSTANCE_FLAGS (type2
)
2899 || TYPE_NFIELDS (type1
) != TYPE_NFIELDS (type2
))
2902 if (!compare_maybe_null_strings (TYPE_TAG_NAME (type1
),
2903 TYPE_TAG_NAME (type2
)))
2905 if (!compare_maybe_null_strings (TYPE_NAME (type1
), TYPE_NAME (type2
)))
2908 if (TYPE_CODE (type1
) == TYPE_CODE_RANGE
)
2910 if (memcmp (TYPE_RANGE_DATA (type1
), TYPE_RANGE_DATA (type2
),
2911 sizeof (*TYPE_RANGE_DATA (type1
))) != 0)
2918 for (i
= 0; i
< TYPE_NFIELDS (type1
); ++i
)
2920 const struct field
*field1
= &TYPE_FIELD (type1
, i
);
2921 const struct field
*field2
= &TYPE_FIELD (type2
, i
);
2922 struct type_equality_entry entry
;
2924 if (FIELD_ARTIFICIAL (*field1
) != FIELD_ARTIFICIAL (*field2
)
2925 || FIELD_BITSIZE (*field1
) != FIELD_BITSIZE (*field2
)
2926 || FIELD_LOC_KIND (*field1
) != FIELD_LOC_KIND (*field2
))
2928 if (!compare_maybe_null_strings (FIELD_NAME (*field1
),
2929 FIELD_NAME (*field2
)))
2931 switch (FIELD_LOC_KIND (*field1
))
2933 case FIELD_LOC_KIND_BITPOS
:
2934 if (FIELD_BITPOS (*field1
) != FIELD_BITPOS (*field2
))
2937 case FIELD_LOC_KIND_ENUMVAL
:
2938 if (FIELD_ENUMVAL (*field1
) != FIELD_ENUMVAL (*field2
))
2941 case FIELD_LOC_KIND_PHYSADDR
:
2942 if (FIELD_STATIC_PHYSADDR (*field1
)
2943 != FIELD_STATIC_PHYSADDR (*field2
))
2946 case FIELD_LOC_KIND_PHYSNAME
:
2947 if (!compare_maybe_null_strings (FIELD_STATIC_PHYSNAME (*field1
),
2948 FIELD_STATIC_PHYSNAME (*field2
)))
2951 case FIELD_LOC_KIND_DWARF_BLOCK
:
2953 struct dwarf2_locexpr_baton
*block1
, *block2
;
2955 block1
= FIELD_DWARF_BLOCK (*field1
);
2956 block2
= FIELD_DWARF_BLOCK (*field2
);
2957 if (block1
->per_cu
!= block2
->per_cu
2958 || block1
->size
!= block2
->size
2959 || memcmp (block1
->data
, block2
->data
, block1
->size
) != 0)
2964 internal_error (__FILE__
, __LINE__
, _("Unsupported field kind "
2965 "%d by check_types_equal"),
2966 FIELD_LOC_KIND (*field1
));
2969 entry
.type1
= FIELD_TYPE (*field1
);
2970 entry
.type2
= FIELD_TYPE (*field2
);
2971 VEC_safe_push (type_equality_entry_d
, *worklist
, &entry
);
2975 if (TYPE_TARGET_TYPE (type1
) != NULL
)
2977 struct type_equality_entry entry
;
2979 if (TYPE_TARGET_TYPE (type2
) == NULL
)
2982 entry
.type1
= TYPE_TARGET_TYPE (type1
);
2983 entry
.type2
= TYPE_TARGET_TYPE (type2
);
2984 VEC_safe_push (type_equality_entry_d
, *worklist
, &entry
);
2986 else if (TYPE_TARGET_TYPE (type2
) != NULL
)
2992 /* Check types on a worklist for equality. Returns zero if any pair
2993 is not equal, non-zero if they are all considered equal. */
2996 check_types_worklist (VEC (type_equality_entry_d
) **worklist
,
2997 struct bcache
*cache
)
2999 while (!VEC_empty (type_equality_entry_d
, *worklist
))
3001 struct type_equality_entry entry
;
3004 entry
= *VEC_last (type_equality_entry_d
, *worklist
);
3005 VEC_pop (type_equality_entry_d
, *worklist
);
3007 /* If the type pair has already been visited, we know it is
3009 bcache_full (&entry
, sizeof (entry
), cache
, &added
);
3013 if (check_types_equal (entry
.type1
, entry
.type2
, worklist
) == 0)
3020 /* Return non-zero if types TYPE1 and TYPE2 are equal, as determined by a
3021 "deep comparison". Otherwise return zero. */
3024 types_deeply_equal (struct type
*type1
, struct type
*type2
)
3026 volatile struct gdb_exception except
;
3028 struct bcache
*cache
;
3029 VEC (type_equality_entry_d
) *worklist
= NULL
;
3030 struct type_equality_entry entry
;
3032 gdb_assert (type1
!= NULL
&& type2
!= NULL
);
3034 /* Early exit for the simple case. */
3038 cache
= bcache_xmalloc (NULL
, NULL
);
3040 entry
.type1
= type1
;
3041 entry
.type2
= type2
;
3042 VEC_safe_push (type_equality_entry_d
, worklist
, &entry
);
3044 TRY_CATCH (except
, RETURN_MASK_ALL
)
3046 result
= check_types_worklist (&worklist
, cache
);
3048 /* check_types_worklist calls several nested helper functions,
3049 some of which can raise a GDB Exception, so we just check
3050 and rethrow here. If there is a GDB exception, a comparison
3051 is not capable (or trusted), so exit. */
3052 bcache_xfree (cache
);
3053 VEC_free (type_equality_entry_d
, worklist
);
3054 /* Rethrow if there was a problem. */
3055 if (except
.reason
< 0)
3056 throw_exception (except
);
3061 /* Compare one type (PARM) for compatibility with another (ARG).
3062 * PARM is intended to be the parameter type of a function; and
3063 * ARG is the supplied argument's type. This function tests if
3064 * the latter can be converted to the former.
3065 * VALUE is the argument's value or NULL if none (or called recursively)
3067 * Return 0 if they are identical types;
3068 * Otherwise, return an integer which corresponds to how compatible
3069 * PARM is to ARG. The higher the return value, the worse the match.
3070 * Generally the "bad" conversions are all uniformly assigned a 100. */
3073 rank_one_type (struct type
*parm
, struct type
*arg
, struct value
*value
)
3075 struct rank rank
= {0,0};
3077 if (types_equal (parm
, arg
))
3078 return EXACT_MATCH_BADNESS
;
3080 /* Resolve typedefs */
3081 if (TYPE_CODE (parm
) == TYPE_CODE_TYPEDEF
)
3082 parm
= check_typedef (parm
);
3083 if (TYPE_CODE (arg
) == TYPE_CODE_TYPEDEF
)
3084 arg
= check_typedef (arg
);
3086 /* See through references, since we can almost make non-references
3088 if (TYPE_CODE (arg
) == TYPE_CODE_REF
)
3089 return (sum_ranks (rank_one_type (parm
, TYPE_TARGET_TYPE (arg
), NULL
),
3090 REFERENCE_CONVERSION_BADNESS
));
3091 if (TYPE_CODE (parm
) == TYPE_CODE_REF
)
3092 return (sum_ranks (rank_one_type (TYPE_TARGET_TYPE (parm
), arg
, NULL
),
3093 REFERENCE_CONVERSION_BADNESS
));
3095 /* Debugging only. */
3096 fprintf_filtered (gdb_stderr
,
3097 "------ Arg is %s [%d], parm is %s [%d]\n",
3098 TYPE_NAME (arg
), TYPE_CODE (arg
),
3099 TYPE_NAME (parm
), TYPE_CODE (parm
));
3101 /* x -> y means arg of type x being supplied for parameter of type y. */
3103 switch (TYPE_CODE (parm
))
3106 switch (TYPE_CODE (arg
))
3110 /* Allowed pointer conversions are:
3111 (a) pointer to void-pointer conversion. */
3112 if (TYPE_CODE (TYPE_TARGET_TYPE (parm
)) == TYPE_CODE_VOID
)
3113 return VOID_PTR_CONVERSION_BADNESS
;
3115 /* (b) pointer to ancestor-pointer conversion. */
3116 rank
.subrank
= distance_to_ancestor (TYPE_TARGET_TYPE (parm
),
3117 TYPE_TARGET_TYPE (arg
),
3119 if (rank
.subrank
>= 0)
3120 return sum_ranks (BASE_PTR_CONVERSION_BADNESS
, rank
);
3122 return INCOMPATIBLE_TYPE_BADNESS
;
3123 case TYPE_CODE_ARRAY
:
3124 if (types_equal (TYPE_TARGET_TYPE (parm
),
3125 TYPE_TARGET_TYPE (arg
)))
3126 return EXACT_MATCH_BADNESS
;
3127 return INCOMPATIBLE_TYPE_BADNESS
;
3128 case TYPE_CODE_FUNC
:
3129 return rank_one_type (TYPE_TARGET_TYPE (parm
), arg
, NULL
);
3131 if (value
!= NULL
&& TYPE_CODE (value_type (value
)) == TYPE_CODE_INT
)
3133 if (value_as_long (value
) == 0)
3135 /* Null pointer conversion: allow it to be cast to a pointer.
3136 [4.10.1 of C++ standard draft n3290] */
3137 return NULL_POINTER_CONVERSION_BADNESS
;
3141 /* If type checking is disabled, allow the conversion. */
3142 if (!strict_type_checking
)
3143 return NS_INTEGER_POINTER_CONVERSION_BADNESS
;
3147 case TYPE_CODE_ENUM
:
3148 case TYPE_CODE_FLAGS
:
3149 case TYPE_CODE_CHAR
:
3150 case TYPE_CODE_RANGE
:
3151 case TYPE_CODE_BOOL
:
3153 return INCOMPATIBLE_TYPE_BADNESS
;
3155 case TYPE_CODE_ARRAY
:
3156 switch (TYPE_CODE (arg
))
3159 case TYPE_CODE_ARRAY
:
3160 return rank_one_type (TYPE_TARGET_TYPE (parm
),
3161 TYPE_TARGET_TYPE (arg
), NULL
);
3163 return INCOMPATIBLE_TYPE_BADNESS
;
3165 case TYPE_CODE_FUNC
:
3166 switch (TYPE_CODE (arg
))
3168 case TYPE_CODE_PTR
: /* funcptr -> func */
3169 return rank_one_type (parm
, TYPE_TARGET_TYPE (arg
), NULL
);
3171 return INCOMPATIBLE_TYPE_BADNESS
;
3174 switch (TYPE_CODE (arg
))
3177 if (TYPE_LENGTH (arg
) == TYPE_LENGTH (parm
))
3179 /* Deal with signed, unsigned, and plain chars and
3180 signed and unsigned ints. */
3181 if (TYPE_NOSIGN (parm
))
3183 /* This case only for character types. */
3184 if (TYPE_NOSIGN (arg
))
3185 return EXACT_MATCH_BADNESS
; /* plain char -> plain char */
3186 else /* signed/unsigned char -> plain char */
3187 return INTEGER_CONVERSION_BADNESS
;
3189 else if (TYPE_UNSIGNED (parm
))
3191 if (TYPE_UNSIGNED (arg
))
3193 /* unsigned int -> unsigned int, or
3194 unsigned long -> unsigned long */
3195 if (integer_types_same_name_p (TYPE_NAME (parm
),
3197 return EXACT_MATCH_BADNESS
;
3198 else if (integer_types_same_name_p (TYPE_NAME (arg
),
3200 && integer_types_same_name_p (TYPE_NAME (parm
),
3202 /* unsigned int -> unsigned long */
3203 return INTEGER_PROMOTION_BADNESS
;
3205 /* unsigned long -> unsigned int */
3206 return INTEGER_CONVERSION_BADNESS
;
3210 if (integer_types_same_name_p (TYPE_NAME (arg
),
3212 && integer_types_same_name_p (TYPE_NAME (parm
),
3214 /* signed long -> unsigned int */
3215 return INTEGER_CONVERSION_BADNESS
;
3217 /* signed int/long -> unsigned int/long */
3218 return INTEGER_CONVERSION_BADNESS
;
3221 else if (!TYPE_NOSIGN (arg
) && !TYPE_UNSIGNED (arg
))
3223 if (integer_types_same_name_p (TYPE_NAME (parm
),
3225 return EXACT_MATCH_BADNESS
;
3226 else if (integer_types_same_name_p (TYPE_NAME (arg
),
3228 && integer_types_same_name_p (TYPE_NAME (parm
),
3230 return INTEGER_PROMOTION_BADNESS
;
3232 return INTEGER_CONVERSION_BADNESS
;
3235 return INTEGER_CONVERSION_BADNESS
;
3237 else if (TYPE_LENGTH (arg
) < TYPE_LENGTH (parm
))
3238 return INTEGER_PROMOTION_BADNESS
;
3240 return INTEGER_CONVERSION_BADNESS
;
3241 case TYPE_CODE_ENUM
:
3242 case TYPE_CODE_FLAGS
:
3243 case TYPE_CODE_CHAR
:
3244 case TYPE_CODE_RANGE
:
3245 case TYPE_CODE_BOOL
:
3246 if (TYPE_DECLARED_CLASS (arg
))
3247 return INCOMPATIBLE_TYPE_BADNESS
;
3248 return INTEGER_PROMOTION_BADNESS
;
3250 return INT_FLOAT_CONVERSION_BADNESS
;
3252 return NS_POINTER_CONVERSION_BADNESS
;
3254 return INCOMPATIBLE_TYPE_BADNESS
;
3257 case TYPE_CODE_ENUM
:
3258 switch (TYPE_CODE (arg
))
3261 case TYPE_CODE_CHAR
:
3262 case TYPE_CODE_RANGE
:
3263 case TYPE_CODE_BOOL
:
3264 case TYPE_CODE_ENUM
:
3265 if (TYPE_DECLARED_CLASS (parm
) || TYPE_DECLARED_CLASS (arg
))
3266 return INCOMPATIBLE_TYPE_BADNESS
;
3267 return INTEGER_CONVERSION_BADNESS
;
3269 return INT_FLOAT_CONVERSION_BADNESS
;
3271 return INCOMPATIBLE_TYPE_BADNESS
;
3274 case TYPE_CODE_CHAR
:
3275 switch (TYPE_CODE (arg
))
3277 case TYPE_CODE_RANGE
:
3278 case TYPE_CODE_BOOL
:
3279 case TYPE_CODE_ENUM
:
3280 if (TYPE_DECLARED_CLASS (arg
))
3281 return INCOMPATIBLE_TYPE_BADNESS
;
3282 return INTEGER_CONVERSION_BADNESS
;
3284 return INT_FLOAT_CONVERSION_BADNESS
;
3286 if (TYPE_LENGTH (arg
) > TYPE_LENGTH (parm
))
3287 return INTEGER_CONVERSION_BADNESS
;
3288 else if (TYPE_LENGTH (arg
) < TYPE_LENGTH (parm
))
3289 return INTEGER_PROMOTION_BADNESS
;
3290 /* >>> !! else fall through !! <<< */
3291 case TYPE_CODE_CHAR
:
3292 /* Deal with signed, unsigned, and plain chars for C++ and
3293 with int cases falling through from previous case. */
3294 if (TYPE_NOSIGN (parm
))
3296 if (TYPE_NOSIGN (arg
))
3297 return EXACT_MATCH_BADNESS
;
3299 return INTEGER_CONVERSION_BADNESS
;
3301 else if (TYPE_UNSIGNED (parm
))
3303 if (TYPE_UNSIGNED (arg
))
3304 return EXACT_MATCH_BADNESS
;
3306 return INTEGER_PROMOTION_BADNESS
;
3308 else if (!TYPE_NOSIGN (arg
) && !TYPE_UNSIGNED (arg
))
3309 return EXACT_MATCH_BADNESS
;
3311 return INTEGER_CONVERSION_BADNESS
;
3313 return INCOMPATIBLE_TYPE_BADNESS
;
3316 case TYPE_CODE_RANGE
:
3317 switch (TYPE_CODE (arg
))
3320 case TYPE_CODE_CHAR
:
3321 case TYPE_CODE_RANGE
:
3322 case TYPE_CODE_BOOL
:
3323 case TYPE_CODE_ENUM
:
3324 return INTEGER_CONVERSION_BADNESS
;
3326 return INT_FLOAT_CONVERSION_BADNESS
;
3328 return INCOMPATIBLE_TYPE_BADNESS
;
3331 case TYPE_CODE_BOOL
:
3332 switch (TYPE_CODE (arg
))
3334 /* n3290 draft, section 4.12.1 (conv.bool):
3336 "A prvalue of arithmetic, unscoped enumeration, pointer, or
3337 pointer to member type can be converted to a prvalue of type
3338 bool. A zero value, null pointer value, or null member pointer
3339 value is converted to false; any other value is converted to
3340 true. A prvalue of type std::nullptr_t can be converted to a
3341 prvalue of type bool; the resulting value is false." */
3343 case TYPE_CODE_CHAR
:
3344 case TYPE_CODE_ENUM
:
3346 case TYPE_CODE_MEMBERPTR
:
3348 return BOOL_CONVERSION_BADNESS
;
3349 case TYPE_CODE_RANGE
:
3350 return INCOMPATIBLE_TYPE_BADNESS
;
3351 case TYPE_CODE_BOOL
:
3352 return EXACT_MATCH_BADNESS
;
3354 return INCOMPATIBLE_TYPE_BADNESS
;
3358 switch (TYPE_CODE (arg
))
3361 if (TYPE_LENGTH (arg
) < TYPE_LENGTH (parm
))
3362 return FLOAT_PROMOTION_BADNESS
;
3363 else if (TYPE_LENGTH (arg
) == TYPE_LENGTH (parm
))
3364 return EXACT_MATCH_BADNESS
;
3366 return FLOAT_CONVERSION_BADNESS
;
3368 case TYPE_CODE_BOOL
:
3369 case TYPE_CODE_ENUM
:
3370 case TYPE_CODE_RANGE
:
3371 case TYPE_CODE_CHAR
:
3372 return INT_FLOAT_CONVERSION_BADNESS
;
3374 return INCOMPATIBLE_TYPE_BADNESS
;
3377 case TYPE_CODE_COMPLEX
:
3378 switch (TYPE_CODE (arg
))
3379 { /* Strictly not needed for C++, but... */
3381 return FLOAT_PROMOTION_BADNESS
;
3382 case TYPE_CODE_COMPLEX
:
3383 return EXACT_MATCH_BADNESS
;
3385 return INCOMPATIBLE_TYPE_BADNESS
;
3388 case TYPE_CODE_STRUCT
:
3389 /* currently same as TYPE_CODE_CLASS. */
3390 switch (TYPE_CODE (arg
))
3392 case TYPE_CODE_STRUCT
:
3393 /* Check for derivation */
3394 rank
.subrank
= distance_to_ancestor (parm
, arg
, 0);
3395 if (rank
.subrank
>= 0)
3396 return sum_ranks (BASE_CONVERSION_BADNESS
, rank
);
3397 /* else fall through */
3399 return INCOMPATIBLE_TYPE_BADNESS
;
3402 case TYPE_CODE_UNION
:
3403 switch (TYPE_CODE (arg
))
3405 case TYPE_CODE_UNION
:
3407 return INCOMPATIBLE_TYPE_BADNESS
;
3410 case TYPE_CODE_MEMBERPTR
:
3411 switch (TYPE_CODE (arg
))
3414 return INCOMPATIBLE_TYPE_BADNESS
;
3417 case TYPE_CODE_METHOD
:
3418 switch (TYPE_CODE (arg
))
3422 return INCOMPATIBLE_TYPE_BADNESS
;
3426 switch (TYPE_CODE (arg
))
3430 return INCOMPATIBLE_TYPE_BADNESS
;
3435 switch (TYPE_CODE (arg
))
3439 return rank_one_type (TYPE_FIELD_TYPE (parm
, 0),
3440 TYPE_FIELD_TYPE (arg
, 0), NULL
);
3442 return INCOMPATIBLE_TYPE_BADNESS
;
3445 case TYPE_CODE_VOID
:
3447 return INCOMPATIBLE_TYPE_BADNESS
;
3448 } /* switch (TYPE_CODE (arg)) */
3451 /* End of functions for overload resolution. */
3453 /* Routines to pretty-print types. */
3456 print_bit_vector (B_TYPE
*bits
, int nbits
)
3460 for (bitno
= 0; bitno
< nbits
; bitno
++)
3462 if ((bitno
% 8) == 0)
3464 puts_filtered (" ");
3466 if (B_TST (bits
, bitno
))
3467 printf_filtered (("1"));
3469 printf_filtered (("0"));
3473 /* Note the first arg should be the "this" pointer, we may not want to
3474 include it since we may get into a infinitely recursive
3478 print_arg_types (struct field
*args
, int nargs
, int spaces
)
3484 for (i
= 0; i
< nargs
; i
++)
3485 recursive_dump_type (args
[i
].type
, spaces
+ 2);
3490 field_is_static (struct field
*f
)
3492 /* "static" fields are the fields whose location is not relative
3493 to the address of the enclosing struct. It would be nice to
3494 have a dedicated flag that would be set for static fields when
3495 the type is being created. But in practice, checking the field
3496 loc_kind should give us an accurate answer. */
3497 return (FIELD_LOC_KIND (*f
) == FIELD_LOC_KIND_PHYSNAME
3498 || FIELD_LOC_KIND (*f
) == FIELD_LOC_KIND_PHYSADDR
);
3502 dump_fn_fieldlists (struct type
*type
, int spaces
)
3508 printfi_filtered (spaces
, "fn_fieldlists ");
3509 gdb_print_host_address (TYPE_FN_FIELDLISTS (type
), gdb_stdout
);
3510 printf_filtered ("\n");
3511 for (method_idx
= 0; method_idx
< TYPE_NFN_FIELDS (type
); method_idx
++)
3513 f
= TYPE_FN_FIELDLIST1 (type
, method_idx
);
3514 printfi_filtered (spaces
+ 2, "[%d] name '%s' (",
3516 TYPE_FN_FIELDLIST_NAME (type
, method_idx
));
3517 gdb_print_host_address (TYPE_FN_FIELDLIST_NAME (type
, method_idx
),
3519 printf_filtered (_(") length %d\n"),
3520 TYPE_FN_FIELDLIST_LENGTH (type
, method_idx
));
3521 for (overload_idx
= 0;
3522 overload_idx
< TYPE_FN_FIELDLIST_LENGTH (type
, method_idx
);
3525 printfi_filtered (spaces
+ 4, "[%d] physname '%s' (",
3527 TYPE_FN_FIELD_PHYSNAME (f
, overload_idx
));
3528 gdb_print_host_address (TYPE_FN_FIELD_PHYSNAME (f
, overload_idx
),
3530 printf_filtered (")\n");
3531 printfi_filtered (spaces
+ 8, "type ");
3532 gdb_print_host_address (TYPE_FN_FIELD_TYPE (f
, overload_idx
),
3534 printf_filtered ("\n");
3536 recursive_dump_type (TYPE_FN_FIELD_TYPE (f
, overload_idx
),
3539 printfi_filtered (spaces
+ 8, "args ");
3540 gdb_print_host_address (TYPE_FN_FIELD_ARGS (f
, overload_idx
),
3542 printf_filtered ("\n");
3544 print_arg_types (TYPE_FN_FIELD_ARGS (f
, overload_idx
),
3545 TYPE_NFIELDS (TYPE_FN_FIELD_TYPE (f
,
3548 printfi_filtered (spaces
+ 8, "fcontext ");
3549 gdb_print_host_address (TYPE_FN_FIELD_FCONTEXT (f
, overload_idx
),
3551 printf_filtered ("\n");
3553 printfi_filtered (spaces
+ 8, "is_const %d\n",
3554 TYPE_FN_FIELD_CONST (f
, overload_idx
));
3555 printfi_filtered (spaces
+ 8, "is_volatile %d\n",
3556 TYPE_FN_FIELD_VOLATILE (f
, overload_idx
));
3557 printfi_filtered (spaces
+ 8, "is_private %d\n",
3558 TYPE_FN_FIELD_PRIVATE (f
, overload_idx
));
3559 printfi_filtered (spaces
+ 8, "is_protected %d\n",
3560 TYPE_FN_FIELD_PROTECTED (f
, overload_idx
));
3561 printfi_filtered (spaces
+ 8, "is_stub %d\n",
3562 TYPE_FN_FIELD_STUB (f
, overload_idx
));
3563 printfi_filtered (spaces
+ 8, "voffset %u\n",
3564 TYPE_FN_FIELD_VOFFSET (f
, overload_idx
));
3570 print_cplus_stuff (struct type
*type
, int spaces
)
3572 printfi_filtered (spaces
, "n_baseclasses %d\n",
3573 TYPE_N_BASECLASSES (type
));
3574 printfi_filtered (spaces
, "nfn_fields %d\n",
3575 TYPE_NFN_FIELDS (type
));
3576 if (TYPE_N_BASECLASSES (type
) > 0)
3578 printfi_filtered (spaces
, "virtual_field_bits (%d bits at *",
3579 TYPE_N_BASECLASSES (type
));
3580 gdb_print_host_address (TYPE_FIELD_VIRTUAL_BITS (type
),
3582 printf_filtered (")");
3584 print_bit_vector (TYPE_FIELD_VIRTUAL_BITS (type
),
3585 TYPE_N_BASECLASSES (type
));
3586 puts_filtered ("\n");
3588 if (TYPE_NFIELDS (type
) > 0)
3590 if (TYPE_FIELD_PRIVATE_BITS (type
) != NULL
)
3592 printfi_filtered (spaces
,
3593 "private_field_bits (%d bits at *",
3594 TYPE_NFIELDS (type
));
3595 gdb_print_host_address (TYPE_FIELD_PRIVATE_BITS (type
),
3597 printf_filtered (")");
3598 print_bit_vector (TYPE_FIELD_PRIVATE_BITS (type
),
3599 TYPE_NFIELDS (type
));
3600 puts_filtered ("\n");
3602 if (TYPE_FIELD_PROTECTED_BITS (type
) != NULL
)
3604 printfi_filtered (spaces
,
3605 "protected_field_bits (%d bits at *",
3606 TYPE_NFIELDS (type
));
3607 gdb_print_host_address (TYPE_FIELD_PROTECTED_BITS (type
),
3609 printf_filtered (")");
3610 print_bit_vector (TYPE_FIELD_PROTECTED_BITS (type
),
3611 TYPE_NFIELDS (type
));
3612 puts_filtered ("\n");
3615 if (TYPE_NFN_FIELDS (type
) > 0)
3617 dump_fn_fieldlists (type
, spaces
);
3621 /* Print the contents of the TYPE's type_specific union, assuming that
3622 its type-specific kind is TYPE_SPECIFIC_GNAT_STUFF. */
3625 print_gnat_stuff (struct type
*type
, int spaces
)
3627 struct type
*descriptive_type
= TYPE_DESCRIPTIVE_TYPE (type
);
3629 recursive_dump_type (descriptive_type
, spaces
+ 2);
3632 static struct obstack dont_print_type_obstack
;
3635 recursive_dump_type (struct type
*type
, int spaces
)
3640 obstack_begin (&dont_print_type_obstack
, 0);
3642 if (TYPE_NFIELDS (type
) > 0
3643 || (HAVE_CPLUS_STRUCT (type
) && TYPE_NFN_FIELDS (type
) > 0))
3645 struct type
**first_dont_print
3646 = (struct type
**) obstack_base (&dont_print_type_obstack
);
3648 int i
= (struct type
**)
3649 obstack_next_free (&dont_print_type_obstack
) - first_dont_print
;
3653 if (type
== first_dont_print
[i
])
3655 printfi_filtered (spaces
, "type node ");
3656 gdb_print_host_address (type
, gdb_stdout
);
3657 printf_filtered (_(" <same as already seen type>\n"));
3662 obstack_ptr_grow (&dont_print_type_obstack
, type
);
3665 printfi_filtered (spaces
, "type node ");
3666 gdb_print_host_address (type
, gdb_stdout
);
3667 printf_filtered ("\n");
3668 printfi_filtered (spaces
, "name '%s' (",
3669 TYPE_NAME (type
) ? TYPE_NAME (type
) : "<NULL>");
3670 gdb_print_host_address (TYPE_NAME (type
), gdb_stdout
);
3671 printf_filtered (")\n");
3672 printfi_filtered (spaces
, "tagname '%s' (",
3673 TYPE_TAG_NAME (type
) ? TYPE_TAG_NAME (type
) : "<NULL>");
3674 gdb_print_host_address (TYPE_TAG_NAME (type
), gdb_stdout
);
3675 printf_filtered (")\n");
3676 printfi_filtered (spaces
, "code 0x%x ", TYPE_CODE (type
));
3677 switch (TYPE_CODE (type
))
3679 case TYPE_CODE_UNDEF
:
3680 printf_filtered ("(TYPE_CODE_UNDEF)");
3683 printf_filtered ("(TYPE_CODE_PTR)");
3685 case TYPE_CODE_ARRAY
:
3686 printf_filtered ("(TYPE_CODE_ARRAY)");
3688 case TYPE_CODE_STRUCT
:
3689 printf_filtered ("(TYPE_CODE_STRUCT)");
3691 case TYPE_CODE_UNION
:
3692 printf_filtered ("(TYPE_CODE_UNION)");
3694 case TYPE_CODE_ENUM
:
3695 printf_filtered ("(TYPE_CODE_ENUM)");
3697 case TYPE_CODE_FLAGS
:
3698 printf_filtered ("(TYPE_CODE_FLAGS)");
3700 case TYPE_CODE_FUNC
:
3701 printf_filtered ("(TYPE_CODE_FUNC)");
3704 printf_filtered ("(TYPE_CODE_INT)");
3707 printf_filtered ("(TYPE_CODE_FLT)");
3709 case TYPE_CODE_VOID
:
3710 printf_filtered ("(TYPE_CODE_VOID)");
3713 printf_filtered ("(TYPE_CODE_SET)");
3715 case TYPE_CODE_RANGE
:
3716 printf_filtered ("(TYPE_CODE_RANGE)");
3718 case TYPE_CODE_STRING
:
3719 printf_filtered ("(TYPE_CODE_STRING)");
3721 case TYPE_CODE_ERROR
:
3722 printf_filtered ("(TYPE_CODE_ERROR)");
3724 case TYPE_CODE_MEMBERPTR
:
3725 printf_filtered ("(TYPE_CODE_MEMBERPTR)");
3727 case TYPE_CODE_METHODPTR
:
3728 printf_filtered ("(TYPE_CODE_METHODPTR)");
3730 case TYPE_CODE_METHOD
:
3731 printf_filtered ("(TYPE_CODE_METHOD)");
3734 printf_filtered ("(TYPE_CODE_REF)");
3736 case TYPE_CODE_CHAR
:
3737 printf_filtered ("(TYPE_CODE_CHAR)");
3739 case TYPE_CODE_BOOL
:
3740 printf_filtered ("(TYPE_CODE_BOOL)");
3742 case TYPE_CODE_COMPLEX
:
3743 printf_filtered ("(TYPE_CODE_COMPLEX)");
3745 case TYPE_CODE_TYPEDEF
:
3746 printf_filtered ("(TYPE_CODE_TYPEDEF)");
3748 case TYPE_CODE_NAMESPACE
:
3749 printf_filtered ("(TYPE_CODE_NAMESPACE)");
3752 printf_filtered ("(UNKNOWN TYPE CODE)");
3755 puts_filtered ("\n");
3756 printfi_filtered (spaces
, "length %d\n", TYPE_LENGTH (type
));
3757 if (TYPE_OBJFILE_OWNED (type
))
3759 printfi_filtered (spaces
, "objfile ");
3760 gdb_print_host_address (TYPE_OWNER (type
).objfile
, gdb_stdout
);
3764 printfi_filtered (spaces
, "gdbarch ");
3765 gdb_print_host_address (TYPE_OWNER (type
).gdbarch
, gdb_stdout
);
3767 printf_filtered ("\n");
3768 printfi_filtered (spaces
, "target_type ");
3769 gdb_print_host_address (TYPE_TARGET_TYPE (type
), gdb_stdout
);
3770 printf_filtered ("\n");
3771 if (TYPE_TARGET_TYPE (type
) != NULL
)
3773 recursive_dump_type (TYPE_TARGET_TYPE (type
), spaces
+ 2);
3775 printfi_filtered (spaces
, "pointer_type ");
3776 gdb_print_host_address (TYPE_POINTER_TYPE (type
), gdb_stdout
);
3777 printf_filtered ("\n");
3778 printfi_filtered (spaces
, "reference_type ");
3779 gdb_print_host_address (TYPE_REFERENCE_TYPE (type
), gdb_stdout
);
3780 printf_filtered ("\n");
3781 printfi_filtered (spaces
, "type_chain ");
3782 gdb_print_host_address (TYPE_CHAIN (type
), gdb_stdout
);
3783 printf_filtered ("\n");
3784 printfi_filtered (spaces
, "instance_flags 0x%x",
3785 TYPE_INSTANCE_FLAGS (type
));
3786 if (TYPE_CONST (type
))
3788 puts_filtered (" TYPE_FLAG_CONST");
3790 if (TYPE_VOLATILE (type
))
3792 puts_filtered (" TYPE_FLAG_VOLATILE");
3794 if (TYPE_CODE_SPACE (type
))
3796 puts_filtered (" TYPE_FLAG_CODE_SPACE");
3798 if (TYPE_DATA_SPACE (type
))
3800 puts_filtered (" TYPE_FLAG_DATA_SPACE");
3802 if (TYPE_ADDRESS_CLASS_1 (type
))
3804 puts_filtered (" TYPE_FLAG_ADDRESS_CLASS_1");
3806 if (TYPE_ADDRESS_CLASS_2 (type
))
3808 puts_filtered (" TYPE_FLAG_ADDRESS_CLASS_2");
3810 if (TYPE_RESTRICT (type
))
3812 puts_filtered (" TYPE_FLAG_RESTRICT");
3814 puts_filtered ("\n");
3816 printfi_filtered (spaces
, "flags");
3817 if (TYPE_UNSIGNED (type
))
3819 puts_filtered (" TYPE_FLAG_UNSIGNED");
3821 if (TYPE_NOSIGN (type
))
3823 puts_filtered (" TYPE_FLAG_NOSIGN");
3825 if (TYPE_STUB (type
))
3827 puts_filtered (" TYPE_FLAG_STUB");
3829 if (TYPE_TARGET_STUB (type
))
3831 puts_filtered (" TYPE_FLAG_TARGET_STUB");
3833 if (TYPE_STATIC (type
))
3835 puts_filtered (" TYPE_FLAG_STATIC");
3837 if (TYPE_PROTOTYPED (type
))
3839 puts_filtered (" TYPE_FLAG_PROTOTYPED");
3841 if (TYPE_INCOMPLETE (type
))
3843 puts_filtered (" TYPE_FLAG_INCOMPLETE");
3845 if (TYPE_VARARGS (type
))
3847 puts_filtered (" TYPE_FLAG_VARARGS");
3849 /* This is used for things like AltiVec registers on ppc. Gcc emits
3850 an attribute for the array type, which tells whether or not we
3851 have a vector, instead of a regular array. */
3852 if (TYPE_VECTOR (type
))
3854 puts_filtered (" TYPE_FLAG_VECTOR");
3856 if (TYPE_FIXED_INSTANCE (type
))
3858 puts_filtered (" TYPE_FIXED_INSTANCE");
3860 if (TYPE_STUB_SUPPORTED (type
))
3862 puts_filtered (" TYPE_STUB_SUPPORTED");
3864 if (TYPE_NOTTEXT (type
))
3866 puts_filtered (" TYPE_NOTTEXT");
3868 puts_filtered ("\n");
3869 printfi_filtered (spaces
, "nfields %d ", TYPE_NFIELDS (type
));
3870 gdb_print_host_address (TYPE_FIELDS (type
), gdb_stdout
);
3871 puts_filtered ("\n");
3872 for (idx
= 0; idx
< TYPE_NFIELDS (type
); idx
++)
3874 if (TYPE_CODE (type
) == TYPE_CODE_ENUM
)
3875 printfi_filtered (spaces
+ 2,
3876 "[%d] enumval %s type ",
3877 idx
, plongest (TYPE_FIELD_ENUMVAL (type
, idx
)));
3879 printfi_filtered (spaces
+ 2,
3880 "[%d] bitpos %d bitsize %d type ",
3881 idx
, TYPE_FIELD_BITPOS (type
, idx
),
3882 TYPE_FIELD_BITSIZE (type
, idx
));
3883 gdb_print_host_address (TYPE_FIELD_TYPE (type
, idx
), gdb_stdout
);
3884 printf_filtered (" name '%s' (",
3885 TYPE_FIELD_NAME (type
, idx
) != NULL
3886 ? TYPE_FIELD_NAME (type
, idx
)
3888 gdb_print_host_address (TYPE_FIELD_NAME (type
, idx
), gdb_stdout
);
3889 printf_filtered (")\n");
3890 if (TYPE_FIELD_TYPE (type
, idx
) != NULL
)
3892 recursive_dump_type (TYPE_FIELD_TYPE (type
, idx
), spaces
+ 4);
3895 if (TYPE_CODE (type
) == TYPE_CODE_RANGE
)
3897 printfi_filtered (spaces
, "low %s%s high %s%s\n",
3898 plongest (TYPE_LOW_BOUND (type
)),
3899 TYPE_LOW_BOUND_UNDEFINED (type
) ? " (undefined)" : "",
3900 plongest (TYPE_HIGH_BOUND (type
)),
3901 TYPE_HIGH_BOUND_UNDEFINED (type
)
3902 ? " (undefined)" : "");
3904 printfi_filtered (spaces
, "vptr_basetype ");
3905 gdb_print_host_address (TYPE_VPTR_BASETYPE (type
), gdb_stdout
);
3906 puts_filtered ("\n");
3907 if (TYPE_VPTR_BASETYPE (type
) != NULL
)
3909 recursive_dump_type (TYPE_VPTR_BASETYPE (type
), spaces
+ 2);
3911 printfi_filtered (spaces
, "vptr_fieldno %d\n",
3912 TYPE_VPTR_FIELDNO (type
));
3914 switch (TYPE_SPECIFIC_FIELD (type
))
3916 case TYPE_SPECIFIC_CPLUS_STUFF
:
3917 printfi_filtered (spaces
, "cplus_stuff ");
3918 gdb_print_host_address (TYPE_CPLUS_SPECIFIC (type
),
3920 puts_filtered ("\n");
3921 print_cplus_stuff (type
, spaces
);
3924 case TYPE_SPECIFIC_GNAT_STUFF
:
3925 printfi_filtered (spaces
, "gnat_stuff ");
3926 gdb_print_host_address (TYPE_GNAT_SPECIFIC (type
), gdb_stdout
);
3927 puts_filtered ("\n");
3928 print_gnat_stuff (type
, spaces
);
3931 case TYPE_SPECIFIC_FLOATFORMAT
:
3932 printfi_filtered (spaces
, "floatformat ");
3933 if (TYPE_FLOATFORMAT (type
) == NULL
)
3934 puts_filtered ("(null)");
3937 puts_filtered ("{ ");
3938 if (TYPE_FLOATFORMAT (type
)[0] == NULL
3939 || TYPE_FLOATFORMAT (type
)[0]->name
== NULL
)
3940 puts_filtered ("(null)");
3942 puts_filtered (TYPE_FLOATFORMAT (type
)[0]->name
);
3944 puts_filtered (", ");
3945 if (TYPE_FLOATFORMAT (type
)[1] == NULL
3946 || TYPE_FLOATFORMAT (type
)[1]->name
== NULL
)
3947 puts_filtered ("(null)");
3949 puts_filtered (TYPE_FLOATFORMAT (type
)[1]->name
);
3951 puts_filtered (" }");
3953 puts_filtered ("\n");
3956 case TYPE_SPECIFIC_FUNC
:
3957 printfi_filtered (spaces
, "calling_convention %d\n",
3958 TYPE_CALLING_CONVENTION (type
));
3959 /* tail_call_list is not printed. */
3964 obstack_free (&dont_print_type_obstack
, NULL
);
3967 /* Trivial helpers for the libiberty hash table, for mapping one
3972 struct type
*old
, *new;
3976 type_pair_hash (const void *item
)
3978 const struct type_pair
*pair
= item
;
3980 return htab_hash_pointer (pair
->old
);
3984 type_pair_eq (const void *item_lhs
, const void *item_rhs
)
3986 const struct type_pair
*lhs
= item_lhs
, *rhs
= item_rhs
;
3988 return lhs
->old
== rhs
->old
;
3991 /* Allocate the hash table used by copy_type_recursive to walk
3992 types without duplicates. We use OBJFILE's obstack, because
3993 OBJFILE is about to be deleted. */
3996 create_copied_types_hash (struct objfile
*objfile
)
3998 return htab_create_alloc_ex (1, type_pair_hash
, type_pair_eq
,
3999 NULL
, &objfile
->objfile_obstack
,
4000 hashtab_obstack_allocate
,
4001 dummy_obstack_deallocate
);
4004 /* Recursively copy (deep copy) TYPE, if it is associated with
4005 OBJFILE. Return a new type allocated using malloc, a saved type if
4006 we have already visited TYPE (using COPIED_TYPES), or TYPE if it is
4007 not associated with OBJFILE. */
4010 copy_type_recursive (struct objfile
*objfile
,
4012 htab_t copied_types
)
4014 struct type_pair
*stored
, pair
;
4016 struct type
*new_type
;
4018 if (! TYPE_OBJFILE_OWNED (type
))
4021 /* This type shouldn't be pointing to any types in other objfiles;
4022 if it did, the type might disappear unexpectedly. */
4023 gdb_assert (TYPE_OBJFILE (type
) == objfile
);
4026 slot
= htab_find_slot (copied_types
, &pair
, INSERT
);
4028 return ((struct type_pair
*) *slot
)->new;
4030 new_type
= alloc_type_arch (get_type_arch (type
));
4032 /* We must add the new type to the hash table immediately, in case
4033 we encounter this type again during a recursive call below. */
4035 = obstack_alloc (&objfile
->objfile_obstack
, sizeof (struct type_pair
));
4037 stored
->new = new_type
;
4040 /* Copy the common fields of types. For the main type, we simply
4041 copy the entire thing and then update specific fields as needed. */
4042 *TYPE_MAIN_TYPE (new_type
) = *TYPE_MAIN_TYPE (type
);
4043 TYPE_OBJFILE_OWNED (new_type
) = 0;
4044 TYPE_OWNER (new_type
).gdbarch
= get_type_arch (type
);
4046 if (TYPE_NAME (type
))
4047 TYPE_NAME (new_type
) = xstrdup (TYPE_NAME (type
));
4048 if (TYPE_TAG_NAME (type
))
4049 TYPE_TAG_NAME (new_type
) = xstrdup (TYPE_TAG_NAME (type
));
4051 TYPE_INSTANCE_FLAGS (new_type
) = TYPE_INSTANCE_FLAGS (type
);
4052 TYPE_LENGTH (new_type
) = TYPE_LENGTH (type
);
4054 /* Copy the fields. */
4055 if (TYPE_NFIELDS (type
))
4059 nfields
= TYPE_NFIELDS (type
);
4060 TYPE_FIELDS (new_type
) = XCNEWVEC (struct field
, nfields
);
4061 for (i
= 0; i
< nfields
; i
++)
4063 TYPE_FIELD_ARTIFICIAL (new_type
, i
) =
4064 TYPE_FIELD_ARTIFICIAL (type
, i
);
4065 TYPE_FIELD_BITSIZE (new_type
, i
) = TYPE_FIELD_BITSIZE (type
, i
);
4066 if (TYPE_FIELD_TYPE (type
, i
))
4067 TYPE_FIELD_TYPE (new_type
, i
)
4068 = copy_type_recursive (objfile
, TYPE_FIELD_TYPE (type
, i
),
4070 if (TYPE_FIELD_NAME (type
, i
))
4071 TYPE_FIELD_NAME (new_type
, i
) =
4072 xstrdup (TYPE_FIELD_NAME (type
, i
));
4073 switch (TYPE_FIELD_LOC_KIND (type
, i
))
4075 case FIELD_LOC_KIND_BITPOS
:
4076 SET_FIELD_BITPOS (TYPE_FIELD (new_type
, i
),
4077 TYPE_FIELD_BITPOS (type
, i
));
4079 case FIELD_LOC_KIND_ENUMVAL
:
4080 SET_FIELD_ENUMVAL (TYPE_FIELD (new_type
, i
),
4081 TYPE_FIELD_ENUMVAL (type
, i
));
4083 case FIELD_LOC_KIND_PHYSADDR
:
4084 SET_FIELD_PHYSADDR (TYPE_FIELD (new_type
, i
),
4085 TYPE_FIELD_STATIC_PHYSADDR (type
, i
));
4087 case FIELD_LOC_KIND_PHYSNAME
:
4088 SET_FIELD_PHYSNAME (TYPE_FIELD (new_type
, i
),
4089 xstrdup (TYPE_FIELD_STATIC_PHYSNAME (type
,
4093 internal_error (__FILE__
, __LINE__
,
4094 _("Unexpected type field location kind: %d"),
4095 TYPE_FIELD_LOC_KIND (type
, i
));
4100 /* For range types, copy the bounds information. */
4101 if (TYPE_CODE (type
) == TYPE_CODE_RANGE
)
4103 TYPE_RANGE_DATA (new_type
) = xmalloc (sizeof (struct range_bounds
));
4104 *TYPE_RANGE_DATA (new_type
) = *TYPE_RANGE_DATA (type
);
4107 /* Copy pointers to other types. */
4108 if (TYPE_TARGET_TYPE (type
))
4109 TYPE_TARGET_TYPE (new_type
) =
4110 copy_type_recursive (objfile
,
4111 TYPE_TARGET_TYPE (type
),
4113 if (TYPE_VPTR_BASETYPE (type
))
4114 TYPE_VPTR_BASETYPE (new_type
) =
4115 copy_type_recursive (objfile
,
4116 TYPE_VPTR_BASETYPE (type
),
4118 /* Maybe copy the type_specific bits.
4120 NOTE drow/2005-12-09: We do not copy the C++-specific bits like
4121 base classes and methods. There's no fundamental reason why we
4122 can't, but at the moment it is not needed. */
4124 if (TYPE_CODE (type
) == TYPE_CODE_FLT
)
4125 TYPE_FLOATFORMAT (new_type
) = TYPE_FLOATFORMAT (type
);
4126 else if (TYPE_CODE (type
) == TYPE_CODE_STRUCT
4127 || TYPE_CODE (type
) == TYPE_CODE_UNION
4128 || TYPE_CODE (type
) == TYPE_CODE_NAMESPACE
)
4129 INIT_CPLUS_SPECIFIC (new_type
);
4134 /* Make a copy of the given TYPE, except that the pointer & reference
4135 types are not preserved.
4137 This function assumes that the given type has an associated objfile.
4138 This objfile is used to allocate the new type. */
4141 copy_type (const struct type
*type
)
4143 struct type
*new_type
;
4145 gdb_assert (TYPE_OBJFILE_OWNED (type
));
4147 new_type
= alloc_type_copy (type
);
4148 TYPE_INSTANCE_FLAGS (new_type
) = TYPE_INSTANCE_FLAGS (type
);
4149 TYPE_LENGTH (new_type
) = TYPE_LENGTH (type
);
4150 memcpy (TYPE_MAIN_TYPE (new_type
), TYPE_MAIN_TYPE (type
),
4151 sizeof (struct main_type
));
4156 /* Helper functions to initialize architecture-specific types. */
4158 /* Allocate a type structure associated with GDBARCH and set its
4159 CODE, LENGTH, and NAME fields. */
4162 arch_type (struct gdbarch
*gdbarch
,
4163 enum type_code code
, int length
, char *name
)
4167 type
= alloc_type_arch (gdbarch
);
4168 TYPE_CODE (type
) = code
;
4169 TYPE_LENGTH (type
) = length
;
4172 TYPE_NAME (type
) = xstrdup (name
);
4177 /* Allocate a TYPE_CODE_INT type structure associated with GDBARCH.
4178 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
4179 the type's TYPE_UNSIGNED flag. NAME is the type name. */
4182 arch_integer_type (struct gdbarch
*gdbarch
,
4183 int bit
, int unsigned_p
, char *name
)
4187 t
= arch_type (gdbarch
, TYPE_CODE_INT
, bit
/ TARGET_CHAR_BIT
, name
);
4189 TYPE_UNSIGNED (t
) = 1;
4190 if (name
&& strcmp (name
, "char") == 0)
4191 TYPE_NOSIGN (t
) = 1;
4196 /* Allocate a TYPE_CODE_CHAR type structure associated with GDBARCH.
4197 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
4198 the type's TYPE_UNSIGNED flag. NAME is the type name. */
4201 arch_character_type (struct gdbarch
*gdbarch
,
4202 int bit
, int unsigned_p
, char *name
)
4206 t
= arch_type (gdbarch
, TYPE_CODE_CHAR
, bit
/ TARGET_CHAR_BIT
, name
);
4208 TYPE_UNSIGNED (t
) = 1;
4213 /* Allocate a TYPE_CODE_BOOL type structure associated with GDBARCH.
4214 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
4215 the type's TYPE_UNSIGNED flag. NAME is the type name. */
4218 arch_boolean_type (struct gdbarch
*gdbarch
,
4219 int bit
, int unsigned_p
, char *name
)
4223 t
= arch_type (gdbarch
, TYPE_CODE_BOOL
, bit
/ TARGET_CHAR_BIT
, name
);
4225 TYPE_UNSIGNED (t
) = 1;
4230 /* Allocate a TYPE_CODE_FLT type structure associated with GDBARCH.
4231 BIT is the type size in bits; if BIT equals -1, the size is
4232 determined by the floatformat. NAME is the type name. Set the
4233 TYPE_FLOATFORMAT from FLOATFORMATS. */
4236 arch_float_type (struct gdbarch
*gdbarch
,
4237 int bit
, char *name
, const struct floatformat
**floatformats
)
4243 gdb_assert (floatformats
!= NULL
);
4244 gdb_assert (floatformats
[0] != NULL
&& floatformats
[1] != NULL
);
4245 bit
= floatformats
[0]->totalsize
;
4247 gdb_assert (bit
>= 0);
4249 t
= arch_type (gdbarch
, TYPE_CODE_FLT
, bit
/ TARGET_CHAR_BIT
, name
);
4250 TYPE_FLOATFORMAT (t
) = floatformats
;
4254 /* Allocate a TYPE_CODE_COMPLEX type structure associated with GDBARCH.
4255 NAME is the type name. TARGET_TYPE is the component float type. */
4258 arch_complex_type (struct gdbarch
*gdbarch
,
4259 char *name
, struct type
*target_type
)
4263 t
= arch_type (gdbarch
, TYPE_CODE_COMPLEX
,
4264 2 * TYPE_LENGTH (target_type
), name
);
4265 TYPE_TARGET_TYPE (t
) = target_type
;
4269 /* Allocate a TYPE_CODE_FLAGS type structure associated with GDBARCH.
4270 NAME is the type name. LENGTH is the size of the flag word in bytes. */
4273 arch_flags_type (struct gdbarch
*gdbarch
, char *name
, int length
)
4275 int nfields
= length
* TARGET_CHAR_BIT
;
4278 type
= arch_type (gdbarch
, TYPE_CODE_FLAGS
, length
, name
);
4279 TYPE_UNSIGNED (type
) = 1;
4280 TYPE_NFIELDS (type
) = nfields
;
4281 TYPE_FIELDS (type
) = TYPE_ZALLOC (type
, nfields
* sizeof (struct field
));
4286 /* Add field to TYPE_CODE_FLAGS type TYPE to indicate the bit at
4287 position BITPOS is called NAME. */
4290 append_flags_type_flag (struct type
*type
, int bitpos
, char *name
)
4292 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_FLAGS
);
4293 gdb_assert (bitpos
< TYPE_NFIELDS (type
));
4294 gdb_assert (bitpos
>= 0);
4298 TYPE_FIELD_NAME (type
, bitpos
) = xstrdup (name
);
4299 SET_FIELD_BITPOS (TYPE_FIELD (type
, bitpos
), bitpos
);
4303 /* Don't show this field to the user. */
4304 SET_FIELD_BITPOS (TYPE_FIELD (type
, bitpos
), -1);
4308 /* Allocate a TYPE_CODE_STRUCT or TYPE_CODE_UNION type structure (as
4309 specified by CODE) associated with GDBARCH. NAME is the type name. */
4312 arch_composite_type (struct gdbarch
*gdbarch
, char *name
, enum type_code code
)
4316 gdb_assert (code
== TYPE_CODE_STRUCT
|| code
== TYPE_CODE_UNION
);
4317 t
= arch_type (gdbarch
, code
, 0, NULL
);
4318 TYPE_TAG_NAME (t
) = name
;
4319 INIT_CPLUS_SPECIFIC (t
);
4323 /* Add new field with name NAME and type FIELD to composite type T.
4324 Do not set the field's position or adjust the type's length;
4325 the caller should do so. Return the new field. */
4328 append_composite_type_field_raw (struct type
*t
, char *name
,
4333 TYPE_NFIELDS (t
) = TYPE_NFIELDS (t
) + 1;
4334 TYPE_FIELDS (t
) = xrealloc (TYPE_FIELDS (t
),
4335 sizeof (struct field
) * TYPE_NFIELDS (t
));
4336 f
= &(TYPE_FIELDS (t
)[TYPE_NFIELDS (t
) - 1]);
4337 memset (f
, 0, sizeof f
[0]);
4338 FIELD_TYPE (f
[0]) = field
;
4339 FIELD_NAME (f
[0]) = name
;
4343 /* Add new field with name NAME and type FIELD to composite type T.
4344 ALIGNMENT (if non-zero) specifies the minimum field alignment. */
4347 append_composite_type_field_aligned (struct type
*t
, char *name
,
4348 struct type
*field
, int alignment
)
4350 struct field
*f
= append_composite_type_field_raw (t
, name
, field
);
4352 if (TYPE_CODE (t
) == TYPE_CODE_UNION
)
4354 if (TYPE_LENGTH (t
) < TYPE_LENGTH (field
))
4355 TYPE_LENGTH (t
) = TYPE_LENGTH (field
);
4357 else if (TYPE_CODE (t
) == TYPE_CODE_STRUCT
)
4359 TYPE_LENGTH (t
) = TYPE_LENGTH (t
) + TYPE_LENGTH (field
);
4360 if (TYPE_NFIELDS (t
) > 1)
4362 SET_FIELD_BITPOS (f
[0],
4363 (FIELD_BITPOS (f
[-1])
4364 + (TYPE_LENGTH (FIELD_TYPE (f
[-1]))
4365 * TARGET_CHAR_BIT
)));
4371 alignment
*= TARGET_CHAR_BIT
;
4372 left
= FIELD_BITPOS (f
[0]) % alignment
;
4376 SET_FIELD_BITPOS (f
[0], FIELD_BITPOS (f
[0]) + (alignment
- left
));
4377 TYPE_LENGTH (t
) += (alignment
- left
) / TARGET_CHAR_BIT
;
4384 /* Add new field with name NAME and type FIELD to composite type T. */
4387 append_composite_type_field (struct type
*t
, char *name
,
4390 append_composite_type_field_aligned (t
, name
, field
, 0);
4393 static struct gdbarch_data
*gdbtypes_data
;
4395 const struct builtin_type
*
4396 builtin_type (struct gdbarch
*gdbarch
)
4398 return gdbarch_data (gdbarch
, gdbtypes_data
);
4402 gdbtypes_post_init (struct gdbarch
*gdbarch
)
4404 struct builtin_type
*builtin_type
4405 = GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct builtin_type
);
4408 builtin_type
->builtin_void
4409 = arch_type (gdbarch
, TYPE_CODE_VOID
, 1, "void");
4410 builtin_type
->builtin_char
4411 = arch_integer_type (gdbarch
, TARGET_CHAR_BIT
,
4412 !gdbarch_char_signed (gdbarch
), "char");
4413 builtin_type
->builtin_signed_char
4414 = arch_integer_type (gdbarch
, TARGET_CHAR_BIT
,
4416 builtin_type
->builtin_unsigned_char
4417 = arch_integer_type (gdbarch
, TARGET_CHAR_BIT
,
4418 1, "unsigned char");
4419 builtin_type
->builtin_short
4420 = arch_integer_type (gdbarch
, gdbarch_short_bit (gdbarch
),
4422 builtin_type
->builtin_unsigned_short
4423 = arch_integer_type (gdbarch
, gdbarch_short_bit (gdbarch
),
4424 1, "unsigned short");
4425 builtin_type
->builtin_int
4426 = arch_integer_type (gdbarch
, gdbarch_int_bit (gdbarch
),
4428 builtin_type
->builtin_unsigned_int
4429 = arch_integer_type (gdbarch
, gdbarch_int_bit (gdbarch
),
4431 builtin_type
->builtin_long
4432 = arch_integer_type (gdbarch
, gdbarch_long_bit (gdbarch
),
4434 builtin_type
->builtin_unsigned_long
4435 = arch_integer_type (gdbarch
, gdbarch_long_bit (gdbarch
),
4436 1, "unsigned long");
4437 builtin_type
->builtin_long_long
4438 = arch_integer_type (gdbarch
, gdbarch_long_long_bit (gdbarch
),
4440 builtin_type
->builtin_unsigned_long_long
4441 = arch_integer_type (gdbarch
, gdbarch_long_long_bit (gdbarch
),
4442 1, "unsigned long long");
4443 builtin_type
->builtin_float
4444 = arch_float_type (gdbarch
, gdbarch_float_bit (gdbarch
),
4445 "float", gdbarch_float_format (gdbarch
));
4446 builtin_type
->builtin_double
4447 = arch_float_type (gdbarch
, gdbarch_double_bit (gdbarch
),
4448 "double", gdbarch_double_format (gdbarch
));
4449 builtin_type
->builtin_long_double
4450 = arch_float_type (gdbarch
, gdbarch_long_double_bit (gdbarch
),
4451 "long double", gdbarch_long_double_format (gdbarch
));
4452 builtin_type
->builtin_complex
4453 = arch_complex_type (gdbarch
, "complex",
4454 builtin_type
->builtin_float
);
4455 builtin_type
->builtin_double_complex
4456 = arch_complex_type (gdbarch
, "double complex",
4457 builtin_type
->builtin_double
);
4458 builtin_type
->builtin_string
4459 = arch_type (gdbarch
, TYPE_CODE_STRING
, 1, "string");
4460 builtin_type
->builtin_bool
4461 = arch_type (gdbarch
, TYPE_CODE_BOOL
, 1, "bool");
4463 /* The following three are about decimal floating point types, which
4464 are 32-bits, 64-bits and 128-bits respectively. */
4465 builtin_type
->builtin_decfloat
4466 = arch_type (gdbarch
, TYPE_CODE_DECFLOAT
, 32 / 8, "_Decimal32");
4467 builtin_type
->builtin_decdouble
4468 = arch_type (gdbarch
, TYPE_CODE_DECFLOAT
, 64 / 8, "_Decimal64");
4469 builtin_type
->builtin_declong
4470 = arch_type (gdbarch
, TYPE_CODE_DECFLOAT
, 128 / 8, "_Decimal128");
4472 /* "True" character types. */
4473 builtin_type
->builtin_true_char
4474 = arch_character_type (gdbarch
, TARGET_CHAR_BIT
, 0, "true character");
4475 builtin_type
->builtin_true_unsigned_char
4476 = arch_character_type (gdbarch
, TARGET_CHAR_BIT
, 1, "true character");
4478 /* Fixed-size integer types. */
4479 builtin_type
->builtin_int0
4480 = arch_integer_type (gdbarch
, 0, 0, "int0_t");
4481 builtin_type
->builtin_int8
4482 = arch_integer_type (gdbarch
, 8, 0, "int8_t");
4483 builtin_type
->builtin_uint8
4484 = arch_integer_type (gdbarch
, 8, 1, "uint8_t");
4485 builtin_type
->builtin_int16
4486 = arch_integer_type (gdbarch
, 16, 0, "int16_t");
4487 builtin_type
->builtin_uint16
4488 = arch_integer_type (gdbarch
, 16, 1, "uint16_t");
4489 builtin_type
->builtin_int32
4490 = arch_integer_type (gdbarch
, 32, 0, "int32_t");
4491 builtin_type
->builtin_uint32
4492 = arch_integer_type (gdbarch
, 32, 1, "uint32_t");
4493 builtin_type
->builtin_int64
4494 = arch_integer_type (gdbarch
, 64, 0, "int64_t");
4495 builtin_type
->builtin_uint64
4496 = arch_integer_type (gdbarch
, 64, 1, "uint64_t");
4497 builtin_type
->builtin_int128
4498 = arch_integer_type (gdbarch
, 128, 0, "int128_t");
4499 builtin_type
->builtin_uint128
4500 = arch_integer_type (gdbarch
, 128, 1, "uint128_t");
4501 TYPE_INSTANCE_FLAGS (builtin_type
->builtin_int8
) |=
4502 TYPE_INSTANCE_FLAG_NOTTEXT
;
4503 TYPE_INSTANCE_FLAGS (builtin_type
->builtin_uint8
) |=
4504 TYPE_INSTANCE_FLAG_NOTTEXT
;
4506 /* Wide character types. */
4507 builtin_type
->builtin_char16
4508 = arch_integer_type (gdbarch
, 16, 0, "char16_t");
4509 builtin_type
->builtin_char32
4510 = arch_integer_type (gdbarch
, 32, 0, "char32_t");
4513 /* Default data/code pointer types. */
4514 builtin_type
->builtin_data_ptr
4515 = lookup_pointer_type (builtin_type
->builtin_void
);
4516 builtin_type
->builtin_func_ptr
4517 = lookup_pointer_type (lookup_function_type (builtin_type
->builtin_void
));
4518 builtin_type
->builtin_func_func
4519 = lookup_function_type (builtin_type
->builtin_func_ptr
);
4521 /* This type represents a GDB internal function. */
4522 builtin_type
->internal_fn
4523 = arch_type (gdbarch
, TYPE_CODE_INTERNAL_FUNCTION
, 0,
4524 "<internal function>");
4526 /* This type represents an xmethod. */
4527 builtin_type
->xmethod
4528 = arch_type (gdbarch
, TYPE_CODE_XMETHOD
, 0, "<xmethod>");
4530 return builtin_type
;
4533 /* This set of objfile-based types is intended to be used by symbol
4534 readers as basic types. */
4536 static const struct objfile_data
*objfile_type_data
;
4538 const struct objfile_type
*
4539 objfile_type (struct objfile
*objfile
)
4541 struct gdbarch
*gdbarch
;
4542 struct objfile_type
*objfile_type
4543 = objfile_data (objfile
, objfile_type_data
);
4546 return objfile_type
;
4548 objfile_type
= OBSTACK_CALLOC (&objfile
->objfile_obstack
,
4549 1, struct objfile_type
);
4551 /* Use the objfile architecture to determine basic type properties. */
4552 gdbarch
= get_objfile_arch (objfile
);
4555 objfile_type
->builtin_void
4556 = init_type (TYPE_CODE_VOID
, 1,
4560 objfile_type
->builtin_char
4561 = init_type (TYPE_CODE_INT
, TARGET_CHAR_BIT
/ TARGET_CHAR_BIT
,
4563 | (gdbarch_char_signed (gdbarch
) ? 0 : TYPE_FLAG_UNSIGNED
)),
4565 objfile_type
->builtin_signed_char
4566 = init_type (TYPE_CODE_INT
, TARGET_CHAR_BIT
/ TARGET_CHAR_BIT
,
4568 "signed char", objfile
);
4569 objfile_type
->builtin_unsigned_char
4570 = init_type (TYPE_CODE_INT
, TARGET_CHAR_BIT
/ TARGET_CHAR_BIT
,
4572 "unsigned char", objfile
);
4573 objfile_type
->builtin_short
4574 = init_type (TYPE_CODE_INT
,
4575 gdbarch_short_bit (gdbarch
) / TARGET_CHAR_BIT
,
4576 0, "short", objfile
);
4577 objfile_type
->builtin_unsigned_short
4578 = init_type (TYPE_CODE_INT
,
4579 gdbarch_short_bit (gdbarch
) / TARGET_CHAR_BIT
,
4580 TYPE_FLAG_UNSIGNED
, "unsigned short", objfile
);
4581 objfile_type
->builtin_int
4582 = init_type (TYPE_CODE_INT
,
4583 gdbarch_int_bit (gdbarch
) / TARGET_CHAR_BIT
,
4585 objfile_type
->builtin_unsigned_int
4586 = init_type (TYPE_CODE_INT
,
4587 gdbarch_int_bit (gdbarch
) / TARGET_CHAR_BIT
,
4588 TYPE_FLAG_UNSIGNED
, "unsigned int", objfile
);
4589 objfile_type
->builtin_long
4590 = init_type (TYPE_CODE_INT
,
4591 gdbarch_long_bit (gdbarch
) / TARGET_CHAR_BIT
,
4592 0, "long", objfile
);
4593 objfile_type
->builtin_unsigned_long
4594 = init_type (TYPE_CODE_INT
,
4595 gdbarch_long_bit (gdbarch
) / TARGET_CHAR_BIT
,
4596 TYPE_FLAG_UNSIGNED
, "unsigned long", objfile
);
4597 objfile_type
->builtin_long_long
4598 = init_type (TYPE_CODE_INT
,
4599 gdbarch_long_long_bit (gdbarch
) / TARGET_CHAR_BIT
,
4600 0, "long long", objfile
);
4601 objfile_type
->builtin_unsigned_long_long
4602 = init_type (TYPE_CODE_INT
,
4603 gdbarch_long_long_bit (gdbarch
) / TARGET_CHAR_BIT
,
4604 TYPE_FLAG_UNSIGNED
, "unsigned long long", objfile
);
4606 objfile_type
->builtin_float
4607 = init_type (TYPE_CODE_FLT
,
4608 gdbarch_float_bit (gdbarch
) / TARGET_CHAR_BIT
,
4609 0, "float", objfile
);
4610 TYPE_FLOATFORMAT (objfile_type
->builtin_float
)
4611 = gdbarch_float_format (gdbarch
);
4612 objfile_type
->builtin_double
4613 = init_type (TYPE_CODE_FLT
,
4614 gdbarch_double_bit (gdbarch
) / TARGET_CHAR_BIT
,
4615 0, "double", objfile
);
4616 TYPE_FLOATFORMAT (objfile_type
->builtin_double
)
4617 = gdbarch_double_format (gdbarch
);
4618 objfile_type
->builtin_long_double
4619 = init_type (TYPE_CODE_FLT
,
4620 gdbarch_long_double_bit (gdbarch
) / TARGET_CHAR_BIT
,
4621 0, "long double", objfile
);
4622 TYPE_FLOATFORMAT (objfile_type
->builtin_long_double
)
4623 = gdbarch_long_double_format (gdbarch
);
4625 /* This type represents a type that was unrecognized in symbol read-in. */
4626 objfile_type
->builtin_error
4627 = init_type (TYPE_CODE_ERROR
, 0, 0, "<unknown type>", objfile
);
4629 /* The following set of types is used for symbols with no
4630 debug information. */
4631 objfile_type
->nodebug_text_symbol
4632 = init_type (TYPE_CODE_FUNC
, 1, 0,
4633 "<text variable, no debug info>", objfile
);
4634 TYPE_TARGET_TYPE (objfile_type
->nodebug_text_symbol
)
4635 = objfile_type
->builtin_int
;
4636 objfile_type
->nodebug_text_gnu_ifunc_symbol
4637 = init_type (TYPE_CODE_FUNC
, 1, TYPE_FLAG_GNU_IFUNC
,
4638 "<text gnu-indirect-function variable, no debug info>",
4640 TYPE_TARGET_TYPE (objfile_type
->nodebug_text_gnu_ifunc_symbol
)
4641 = objfile_type
->nodebug_text_symbol
;
4642 objfile_type
->nodebug_got_plt_symbol
4643 = init_type (TYPE_CODE_PTR
, gdbarch_addr_bit (gdbarch
) / 8, 0,
4644 "<text from jump slot in .got.plt, no debug info>",
4646 TYPE_TARGET_TYPE (objfile_type
->nodebug_got_plt_symbol
)
4647 = objfile_type
->nodebug_text_symbol
;
4648 objfile_type
->nodebug_data_symbol
4649 = init_type (TYPE_CODE_INT
,
4650 gdbarch_int_bit (gdbarch
) / HOST_CHAR_BIT
, 0,
4651 "<data variable, no debug info>", objfile
);
4652 objfile_type
->nodebug_unknown_symbol
4653 = init_type (TYPE_CODE_INT
, 1, 0,
4654 "<variable (not text or data), no debug info>", objfile
);
4655 objfile_type
->nodebug_tls_symbol
4656 = init_type (TYPE_CODE_INT
,
4657 gdbarch_int_bit (gdbarch
) / HOST_CHAR_BIT
, 0,
4658 "<thread local variable, no debug info>", objfile
);
4660 /* NOTE: on some targets, addresses and pointers are not necessarily
4664 - gdb's `struct type' always describes the target's
4666 - gdb's `struct value' objects should always hold values in
4668 - gdb's CORE_ADDR values are addresses in the unified virtual
4669 address space that the assembler and linker work with. Thus,
4670 since target_read_memory takes a CORE_ADDR as an argument, it
4671 can access any memory on the target, even if the processor has
4672 separate code and data address spaces.
4674 In this context, objfile_type->builtin_core_addr is a bit odd:
4675 it's a target type for a value the target will never see. It's
4676 only used to hold the values of (typeless) linker symbols, which
4677 are indeed in the unified virtual address space. */
4679 objfile_type
->builtin_core_addr
4680 = init_type (TYPE_CODE_INT
,
4681 gdbarch_addr_bit (gdbarch
) / 8,
4682 TYPE_FLAG_UNSIGNED
, "__CORE_ADDR", objfile
);
4684 set_objfile_data (objfile
, objfile_type_data
, objfile_type
);
4685 return objfile_type
;
4688 extern initialize_file_ftype _initialize_gdbtypes
;
4691 _initialize_gdbtypes (void)
4693 gdbtypes_data
= gdbarch_data_register_post_init (gdbtypes_post_init
);
4694 objfile_type_data
= register_objfile_data ();
4696 add_setshow_zuinteger_cmd ("overload", no_class
, &overload_debug
,
4697 _("Set debugging of C++ overloading."),
4698 _("Show debugging of C++ overloading."),
4699 _("When enabled, ranking of the "
4700 "functions is displayed."),
4702 show_overload_debug
,
4703 &setdebuglist
, &showdebuglist
);
4705 /* Add user knob for controlling resolution of opaque types. */
4706 add_setshow_boolean_cmd ("opaque-type-resolution", class_support
,
4707 &opaque_type_resolution
,
4708 _("Set resolution of opaque struct/class/union"
4709 " types (if set before loading symbols)."),
4710 _("Show resolution of opaque struct/class/union"
4711 " types (if set before loading symbols)."),
4713 show_opaque_type_resolution
,
4714 &setlist
, &showlist
);
4716 /* Add an option to permit non-strict type checking. */
4717 add_setshow_boolean_cmd ("type", class_support
,
4718 &strict_type_checking
,
4719 _("Set strict type checking."),
4720 _("Show strict type checking."),
4722 show_strict_type_checking
,
4723 &setchecklist
, &showchecklist
);