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 /* See gdbtypes.h. */
1617 is_dynamic_type (struct type
*type
)
1619 type
= check_typedef (type
);
1621 if (TYPE_CODE (type
) == TYPE_CODE_REF
)
1622 type
= check_typedef (TYPE_TARGET_TYPE (type
));
1624 switch (TYPE_CODE (type
))
1626 case TYPE_CODE_ARRAY
:
1628 const struct type
*range_type
;
1630 gdb_assert (TYPE_NFIELDS (type
) == 1);
1631 range_type
= TYPE_INDEX_TYPE (type
);
1632 if (!has_static_range (TYPE_RANGE_DATA (range_type
)))
1635 return is_dynamic_type (TYPE_TARGET_TYPE (type
));
1644 /* Resolves dynamic bound values of an array type TYPE to static ones.
1645 ADDRESS might be needed to resolve the subrange bounds, it is the location
1646 of the associated array. */
1648 static struct type
*
1649 resolve_dynamic_bounds (struct type
*type
, CORE_ADDR addr
)
1652 struct type
*elt_type
;
1653 struct type
*range_type
;
1654 struct type
*ary_dim
;
1655 const struct dynamic_prop
*prop
;
1656 const struct dwarf2_locexpr_baton
*baton
;
1657 struct dynamic_prop low_bound
, high_bound
;
1659 if (TYPE_CODE (type
) == TYPE_CODE_TYPEDEF
)
1661 struct type
*copy
= copy_type (type
);
1663 TYPE_TARGET_TYPE (copy
)
1664 = resolve_dynamic_bounds (TYPE_TARGET_TYPE (type
), addr
);
1669 if (TYPE_CODE (type
) == TYPE_CODE_REF
)
1671 struct type
*copy
= copy_type (type
);
1672 CORE_ADDR target_addr
= read_memory_typed_address (addr
, type
);
1674 TYPE_TARGET_TYPE (copy
)
1675 = resolve_dynamic_bounds (TYPE_TARGET_TYPE (type
), target_addr
);
1679 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_ARRAY
);
1682 range_type
= check_typedef (TYPE_INDEX_TYPE (elt_type
));
1684 prop
= &TYPE_RANGE_DATA (range_type
)->low
;
1685 if (dwarf2_evaluate_property (prop
, addr
, &value
))
1687 low_bound
.kind
= PROP_CONST
;
1688 low_bound
.data
.const_val
= value
;
1692 low_bound
.kind
= PROP_UNDEFINED
;
1693 low_bound
.data
.const_val
= 0;
1696 prop
= &TYPE_RANGE_DATA (range_type
)->high
;
1697 if (dwarf2_evaluate_property (prop
, addr
, &value
))
1699 high_bound
.kind
= PROP_CONST
;
1700 high_bound
.data
.const_val
= value
;
1704 high_bound
.kind
= PROP_UNDEFINED
;
1705 high_bound
.data
.const_val
= 0;
1708 ary_dim
= check_typedef (TYPE_TARGET_TYPE (elt_type
));
1710 if (ary_dim
!= NULL
&& TYPE_CODE (ary_dim
) == TYPE_CODE_ARRAY
)
1711 elt_type
= resolve_dynamic_bounds (TYPE_TARGET_TYPE (type
), addr
);
1713 elt_type
= TYPE_TARGET_TYPE (type
);
1715 range_type
= create_range_type (NULL
,
1716 TYPE_TARGET_TYPE (range_type
),
1717 &low_bound
, &high_bound
);
1718 return create_array_type (copy_type (type
),
1723 /* See gdbtypes.h */
1726 resolve_dynamic_type (struct type
*type
, CORE_ADDR addr
)
1728 struct type
*real_type
= check_typedef (type
);
1729 struct type
*resolved_type
;
1731 if (!is_dynamic_type (real_type
))
1734 resolved_type
= resolve_dynamic_bounds (type
, addr
);
1736 return resolved_type
;
1739 /* Find the real type of TYPE. This function returns the real type,
1740 after removing all layers of typedefs, and completing opaque or stub
1741 types. Completion changes the TYPE argument, but stripping of
1744 Instance flags (e.g. const/volatile) are preserved as typedefs are
1745 stripped. If necessary a new qualified form of the underlying type
1748 NOTE: This will return a typedef if TYPE_TARGET_TYPE for the typedef has
1749 not been computed and we're either in the middle of reading symbols, or
1750 there was no name for the typedef in the debug info.
1752 NOTE: Lookup of opaque types can throw errors for invalid symbol files.
1753 QUITs in the symbol reading code can also throw.
1754 Thus this function can throw an exception.
1756 If TYPE is a TYPE_CODE_TYPEDEF, its length is updated to the length of
1759 If this is a stubbed struct (i.e. declared as struct foo *), see if
1760 we can find a full definition in some other file. If so, copy this
1761 definition, so we can use it in future. There used to be a comment
1762 (but not any code) that if we don't find a full definition, we'd
1763 set a flag so we don't spend time in the future checking the same
1764 type. That would be a mistake, though--we might load in more
1765 symbols which contain a full definition for the type. */
1768 check_typedef (struct type
*type
)
1770 struct type
*orig_type
= type
;
1771 /* While we're removing typedefs, we don't want to lose qualifiers.
1772 E.g., const/volatile. */
1773 int instance_flags
= TYPE_INSTANCE_FLAGS (type
);
1777 while (TYPE_CODE (type
) == TYPE_CODE_TYPEDEF
)
1779 if (!TYPE_TARGET_TYPE (type
))
1784 /* It is dangerous to call lookup_symbol if we are currently
1785 reading a symtab. Infinite recursion is one danger. */
1786 if (currently_reading_symtab
)
1787 return make_qualified_type (type
, instance_flags
, NULL
);
1789 name
= type_name_no_tag (type
);
1790 /* FIXME: shouldn't we separately check the TYPE_NAME and
1791 the TYPE_TAG_NAME, and look in STRUCT_DOMAIN and/or
1792 VAR_DOMAIN as appropriate? (this code was written before
1793 TYPE_NAME and TYPE_TAG_NAME were separate). */
1796 stub_noname_complaint ();
1797 return make_qualified_type (type
, instance_flags
, NULL
);
1799 sym
= lookup_symbol (name
, 0, STRUCT_DOMAIN
, 0);
1801 TYPE_TARGET_TYPE (type
) = SYMBOL_TYPE (sym
);
1802 else /* TYPE_CODE_UNDEF */
1803 TYPE_TARGET_TYPE (type
) = alloc_type_arch (get_type_arch (type
));
1805 type
= TYPE_TARGET_TYPE (type
);
1807 /* Preserve the instance flags as we traverse down the typedef chain.
1809 Handling address spaces/classes is nasty, what do we do if there's a
1811 E.g., what if an outer typedef marks the type as class_1 and an inner
1812 typedef marks the type as class_2?
1813 This is the wrong place to do such error checking. We leave it to
1814 the code that created the typedef in the first place to flag the
1815 error. We just pick the outer address space (akin to letting the
1816 outer cast in a chain of casting win), instead of assuming
1817 "it can't happen". */
1819 const int ALL_SPACES
= (TYPE_INSTANCE_FLAG_CODE_SPACE
1820 | TYPE_INSTANCE_FLAG_DATA_SPACE
);
1821 const int ALL_CLASSES
= TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL
;
1822 int new_instance_flags
= TYPE_INSTANCE_FLAGS (type
);
1824 /* Treat code vs data spaces and address classes separately. */
1825 if ((instance_flags
& ALL_SPACES
) != 0)
1826 new_instance_flags
&= ~ALL_SPACES
;
1827 if ((instance_flags
& ALL_CLASSES
) != 0)
1828 new_instance_flags
&= ~ALL_CLASSES
;
1830 instance_flags
|= new_instance_flags
;
1834 /* If this is a struct/class/union with no fields, then check
1835 whether a full definition exists somewhere else. This is for
1836 systems where a type definition with no fields is issued for such
1837 types, instead of identifying them as stub types in the first
1840 if (TYPE_IS_OPAQUE (type
)
1841 && opaque_type_resolution
1842 && !currently_reading_symtab
)
1844 const char *name
= type_name_no_tag (type
);
1845 struct type
*newtype
;
1849 stub_noname_complaint ();
1850 return make_qualified_type (type
, instance_flags
, NULL
);
1852 newtype
= lookup_transparent_type (name
);
1856 /* If the resolved type and the stub are in the same
1857 objfile, then replace the stub type with the real deal.
1858 But if they're in separate objfiles, leave the stub
1859 alone; we'll just look up the transparent type every time
1860 we call check_typedef. We can't create pointers between
1861 types allocated to different objfiles, since they may
1862 have different lifetimes. Trying to copy NEWTYPE over to
1863 TYPE's objfile is pointless, too, since you'll have to
1864 move over any other types NEWTYPE refers to, which could
1865 be an unbounded amount of stuff. */
1866 if (TYPE_OBJFILE (newtype
) == TYPE_OBJFILE (type
))
1867 type
= make_qualified_type (newtype
,
1868 TYPE_INSTANCE_FLAGS (type
),
1874 /* Otherwise, rely on the stub flag being set for opaque/stubbed
1876 else if (TYPE_STUB (type
) && !currently_reading_symtab
)
1878 const char *name
= type_name_no_tag (type
);
1879 /* FIXME: shouldn't we separately check the TYPE_NAME and the
1880 TYPE_TAG_NAME, and look in STRUCT_DOMAIN and/or VAR_DOMAIN
1881 as appropriate? (this code was written before TYPE_NAME and
1882 TYPE_TAG_NAME were separate). */
1887 stub_noname_complaint ();
1888 return make_qualified_type (type
, instance_flags
, NULL
);
1890 sym
= lookup_symbol (name
, 0, STRUCT_DOMAIN
, 0);
1893 /* Same as above for opaque types, we can replace the stub
1894 with the complete type only if they are in the same
1896 if (TYPE_OBJFILE (SYMBOL_TYPE(sym
)) == TYPE_OBJFILE (type
))
1897 type
= make_qualified_type (SYMBOL_TYPE (sym
),
1898 TYPE_INSTANCE_FLAGS (type
),
1901 type
= SYMBOL_TYPE (sym
);
1905 if (TYPE_TARGET_STUB (type
))
1907 struct type
*range_type
;
1908 struct type
*target_type
= check_typedef (TYPE_TARGET_TYPE (type
));
1910 if (TYPE_STUB (target_type
) || TYPE_TARGET_STUB (target_type
))
1912 /* Nothing we can do. */
1914 else if (TYPE_CODE (type
) == TYPE_CODE_RANGE
)
1916 TYPE_LENGTH (type
) = TYPE_LENGTH (target_type
);
1917 TYPE_TARGET_STUB (type
) = 0;
1921 type
= make_qualified_type (type
, instance_flags
, NULL
);
1923 /* Cache TYPE_LENGTH for future use. */
1924 TYPE_LENGTH (orig_type
) = TYPE_LENGTH (type
);
1929 /* Parse a type expression in the string [P..P+LENGTH). If an error
1930 occurs, silently return a void type. */
1932 static struct type
*
1933 safe_parse_type (struct gdbarch
*gdbarch
, char *p
, int length
)
1935 struct ui_file
*saved_gdb_stderr
;
1936 struct type
*type
= NULL
; /* Initialize to keep gcc happy. */
1937 volatile struct gdb_exception except
;
1939 /* Suppress error messages. */
1940 saved_gdb_stderr
= gdb_stderr
;
1941 gdb_stderr
= ui_file_new ();
1943 /* Call parse_and_eval_type() without fear of longjmp()s. */
1944 TRY_CATCH (except
, RETURN_MASK_ERROR
)
1946 type
= parse_and_eval_type (p
, length
);
1949 if (except
.reason
< 0)
1950 type
= builtin_type (gdbarch
)->builtin_void
;
1952 /* Stop suppressing error messages. */
1953 ui_file_delete (gdb_stderr
);
1954 gdb_stderr
= saved_gdb_stderr
;
1959 /* Ugly hack to convert method stubs into method types.
1961 He ain't kiddin'. This demangles the name of the method into a
1962 string including argument types, parses out each argument type,
1963 generates a string casting a zero to that type, evaluates the
1964 string, and stuffs the resulting type into an argtype vector!!!
1965 Then it knows the type of the whole function (including argument
1966 types for overloading), which info used to be in the stab's but was
1967 removed to hack back the space required for them. */
1970 check_stub_method (struct type
*type
, int method_id
, int signature_id
)
1972 struct gdbarch
*gdbarch
= get_type_arch (type
);
1974 char *mangled_name
= gdb_mangle_name (type
, method_id
, signature_id
);
1975 char *demangled_name
= gdb_demangle (mangled_name
,
1976 DMGL_PARAMS
| DMGL_ANSI
);
1977 char *argtypetext
, *p
;
1978 int depth
= 0, argcount
= 1;
1979 struct field
*argtypes
;
1982 /* Make sure we got back a function string that we can use. */
1984 p
= strchr (demangled_name
, '(');
1988 if (demangled_name
== NULL
|| p
== NULL
)
1989 error (_("Internal: Cannot demangle mangled name `%s'."),
1992 /* Now, read in the parameters that define this type. */
1997 if (*p
== '(' || *p
== '<')
2001 else if (*p
== ')' || *p
== '>')
2005 else if (*p
== ',' && depth
== 0)
2013 /* If we read one argument and it was ``void'', don't count it. */
2014 if (strncmp (argtypetext
, "(void)", 6) == 0)
2017 /* We need one extra slot, for the THIS pointer. */
2019 argtypes
= (struct field
*)
2020 TYPE_ALLOC (type
, (argcount
+ 1) * sizeof (struct field
));
2023 /* Add THIS pointer for non-static methods. */
2024 f
= TYPE_FN_FIELDLIST1 (type
, method_id
);
2025 if (TYPE_FN_FIELD_STATIC_P (f
, signature_id
))
2029 argtypes
[0].type
= lookup_pointer_type (type
);
2033 if (*p
!= ')') /* () means no args, skip while. */
2038 if (depth
<= 0 && (*p
== ',' || *p
== ')'))
2040 /* Avoid parsing of ellipsis, they will be handled below.
2041 Also avoid ``void'' as above. */
2042 if (strncmp (argtypetext
, "...", p
- argtypetext
) != 0
2043 && strncmp (argtypetext
, "void", p
- argtypetext
) != 0)
2045 argtypes
[argcount
].type
=
2046 safe_parse_type (gdbarch
, argtypetext
, p
- argtypetext
);
2049 argtypetext
= p
+ 1;
2052 if (*p
== '(' || *p
== '<')
2056 else if (*p
== ')' || *p
== '>')
2065 TYPE_FN_FIELD_PHYSNAME (f
, signature_id
) = mangled_name
;
2067 /* Now update the old "stub" type into a real type. */
2068 mtype
= TYPE_FN_FIELD_TYPE (f
, signature_id
);
2069 TYPE_DOMAIN_TYPE (mtype
) = type
;
2070 TYPE_FIELDS (mtype
) = argtypes
;
2071 TYPE_NFIELDS (mtype
) = argcount
;
2072 TYPE_STUB (mtype
) = 0;
2073 TYPE_FN_FIELD_STUB (f
, signature_id
) = 0;
2075 TYPE_VARARGS (mtype
) = 1;
2077 xfree (demangled_name
);
2080 /* This is the external interface to check_stub_method, above. This
2081 function unstubs all of the signatures for TYPE's METHOD_ID method
2082 name. After calling this function TYPE_FN_FIELD_STUB will be
2083 cleared for each signature and TYPE_FN_FIELDLIST_NAME will be
2086 This function unfortunately can not die until stabs do. */
2089 check_stub_method_group (struct type
*type
, int method_id
)
2091 int len
= TYPE_FN_FIELDLIST_LENGTH (type
, method_id
);
2092 struct fn_field
*f
= TYPE_FN_FIELDLIST1 (type
, method_id
);
2093 int j
, found_stub
= 0;
2095 for (j
= 0; j
< len
; j
++)
2096 if (TYPE_FN_FIELD_STUB (f
, j
))
2099 check_stub_method (type
, method_id
, j
);
2102 /* GNU v3 methods with incorrect names were corrected when we read
2103 in type information, because it was cheaper to do it then. The
2104 only GNU v2 methods with incorrect method names are operators and
2105 destructors; destructors were also corrected when we read in type
2108 Therefore the only thing we need to handle here are v2 operator
2110 if (found_stub
&& strncmp (TYPE_FN_FIELD_PHYSNAME (f
, 0), "_Z", 2) != 0)
2113 char dem_opname
[256];
2115 ret
= cplus_demangle_opname (TYPE_FN_FIELDLIST_NAME (type
,
2117 dem_opname
, DMGL_ANSI
);
2119 ret
= cplus_demangle_opname (TYPE_FN_FIELDLIST_NAME (type
,
2123 TYPE_FN_FIELDLIST_NAME (type
, method_id
) = xstrdup (dem_opname
);
2127 /* Ensure it is in .rodata (if available) by workarounding GCC PR 44690. */
2128 const struct cplus_struct_type cplus_struct_default
= { };
2131 allocate_cplus_struct_type (struct type
*type
)
2133 if (HAVE_CPLUS_STRUCT (type
))
2134 /* Structure was already allocated. Nothing more to do. */
2137 TYPE_SPECIFIC_FIELD (type
) = TYPE_SPECIFIC_CPLUS_STUFF
;
2138 TYPE_RAW_CPLUS_SPECIFIC (type
) = (struct cplus_struct_type
*)
2139 TYPE_ALLOC (type
, sizeof (struct cplus_struct_type
));
2140 *(TYPE_RAW_CPLUS_SPECIFIC (type
)) = cplus_struct_default
;
2143 const struct gnat_aux_type gnat_aux_default
=
2146 /* Set the TYPE's type-specific kind to TYPE_SPECIFIC_GNAT_STUFF,
2147 and allocate the associated gnat-specific data. The gnat-specific
2148 data is also initialized to gnat_aux_default. */
2151 allocate_gnat_aux_type (struct type
*type
)
2153 TYPE_SPECIFIC_FIELD (type
) = TYPE_SPECIFIC_GNAT_STUFF
;
2154 TYPE_GNAT_SPECIFIC (type
) = (struct gnat_aux_type
*)
2155 TYPE_ALLOC (type
, sizeof (struct gnat_aux_type
));
2156 *(TYPE_GNAT_SPECIFIC (type
)) = gnat_aux_default
;
2159 /* Helper function to initialize the standard scalar types.
2161 If NAME is non-NULL, then it is used to initialize the type name.
2162 Note that NAME is not copied; it is required to have a lifetime at
2163 least as long as OBJFILE. */
2166 init_type (enum type_code code
, int length
, int flags
,
2167 const char *name
, struct objfile
*objfile
)
2171 type
= alloc_type (objfile
);
2172 TYPE_CODE (type
) = code
;
2173 TYPE_LENGTH (type
) = length
;
2175 gdb_assert (!(flags
& (TYPE_FLAG_MIN
- 1)));
2176 if (flags
& TYPE_FLAG_UNSIGNED
)
2177 TYPE_UNSIGNED (type
) = 1;
2178 if (flags
& TYPE_FLAG_NOSIGN
)
2179 TYPE_NOSIGN (type
) = 1;
2180 if (flags
& TYPE_FLAG_STUB
)
2181 TYPE_STUB (type
) = 1;
2182 if (flags
& TYPE_FLAG_TARGET_STUB
)
2183 TYPE_TARGET_STUB (type
) = 1;
2184 if (flags
& TYPE_FLAG_STATIC
)
2185 TYPE_STATIC (type
) = 1;
2186 if (flags
& TYPE_FLAG_PROTOTYPED
)
2187 TYPE_PROTOTYPED (type
) = 1;
2188 if (flags
& TYPE_FLAG_INCOMPLETE
)
2189 TYPE_INCOMPLETE (type
) = 1;
2190 if (flags
& TYPE_FLAG_VARARGS
)
2191 TYPE_VARARGS (type
) = 1;
2192 if (flags
& TYPE_FLAG_VECTOR
)
2193 TYPE_VECTOR (type
) = 1;
2194 if (flags
& TYPE_FLAG_STUB_SUPPORTED
)
2195 TYPE_STUB_SUPPORTED (type
) = 1;
2196 if (flags
& TYPE_FLAG_FIXED_INSTANCE
)
2197 TYPE_FIXED_INSTANCE (type
) = 1;
2198 if (flags
& TYPE_FLAG_GNU_IFUNC
)
2199 TYPE_GNU_IFUNC (type
) = 1;
2201 TYPE_NAME (type
) = name
;
2205 if (name
&& strcmp (name
, "char") == 0)
2206 TYPE_NOSIGN (type
) = 1;
2210 case TYPE_CODE_STRUCT
:
2211 case TYPE_CODE_UNION
:
2212 case TYPE_CODE_NAMESPACE
:
2213 INIT_CPLUS_SPECIFIC (type
);
2216 TYPE_SPECIFIC_FIELD (type
) = TYPE_SPECIFIC_FLOATFORMAT
;
2218 case TYPE_CODE_FUNC
:
2219 INIT_FUNC_SPECIFIC (type
);
2225 /* Queries on types. */
2228 can_dereference (struct type
*t
)
2230 /* FIXME: Should we return true for references as well as
2235 && TYPE_CODE (t
) == TYPE_CODE_PTR
2236 && TYPE_CODE (TYPE_TARGET_TYPE (t
)) != TYPE_CODE_VOID
);
2240 is_integral_type (struct type
*t
)
2245 && ((TYPE_CODE (t
) == TYPE_CODE_INT
)
2246 || (TYPE_CODE (t
) == TYPE_CODE_ENUM
)
2247 || (TYPE_CODE (t
) == TYPE_CODE_FLAGS
)
2248 || (TYPE_CODE (t
) == TYPE_CODE_CHAR
)
2249 || (TYPE_CODE (t
) == TYPE_CODE_RANGE
)
2250 || (TYPE_CODE (t
) == TYPE_CODE_BOOL
)));
2253 /* Return true if TYPE is scalar. */
2256 is_scalar_type (struct type
*type
)
2258 CHECK_TYPEDEF (type
);
2260 switch (TYPE_CODE (type
))
2262 case TYPE_CODE_ARRAY
:
2263 case TYPE_CODE_STRUCT
:
2264 case TYPE_CODE_UNION
:
2266 case TYPE_CODE_STRING
:
2273 /* Return true if T is scalar, or a composite type which in practice has
2274 the memory layout of a scalar type. E.g., an array or struct with only
2275 one scalar element inside it, or a union with only scalar elements. */
2278 is_scalar_type_recursive (struct type
*t
)
2282 if (is_scalar_type (t
))
2284 /* Are we dealing with an array or string of known dimensions? */
2285 else if ((TYPE_CODE (t
) == TYPE_CODE_ARRAY
2286 || TYPE_CODE (t
) == TYPE_CODE_STRING
) && TYPE_NFIELDS (t
) == 1
2287 && TYPE_CODE (TYPE_INDEX_TYPE (t
)) == TYPE_CODE_RANGE
)
2289 LONGEST low_bound
, high_bound
;
2290 struct type
*elt_type
= check_typedef (TYPE_TARGET_TYPE (t
));
2292 get_discrete_bounds (TYPE_INDEX_TYPE (t
), &low_bound
, &high_bound
);
2294 return high_bound
== low_bound
&& is_scalar_type_recursive (elt_type
);
2296 /* Are we dealing with a struct with one element? */
2297 else if (TYPE_CODE (t
) == TYPE_CODE_STRUCT
&& TYPE_NFIELDS (t
) == 1)
2298 return is_scalar_type_recursive (TYPE_FIELD_TYPE (t
, 0));
2299 else if (TYPE_CODE (t
) == TYPE_CODE_UNION
)
2301 int i
, n
= TYPE_NFIELDS (t
);
2303 /* If all elements of the union are scalar, then the union is scalar. */
2304 for (i
= 0; i
< n
; i
++)
2305 if (!is_scalar_type_recursive (TYPE_FIELD_TYPE (t
, i
)))
2314 /* A helper function which returns true if types A and B represent the
2315 "same" class type. This is true if the types have the same main
2316 type, or the same name. */
2319 class_types_same_p (const struct type
*a
, const struct type
*b
)
2321 return (TYPE_MAIN_TYPE (a
) == TYPE_MAIN_TYPE (b
)
2322 || (TYPE_NAME (a
) && TYPE_NAME (b
)
2323 && !strcmp (TYPE_NAME (a
), TYPE_NAME (b
))));
2326 /* If BASE is an ancestor of DCLASS return the distance between them.
2327 otherwise return -1;
2331 class B: public A {};
2332 class C: public B {};
2335 distance_to_ancestor (A, A, 0) = 0
2336 distance_to_ancestor (A, B, 0) = 1
2337 distance_to_ancestor (A, C, 0) = 2
2338 distance_to_ancestor (A, D, 0) = 3
2340 If PUBLIC is 1 then only public ancestors are considered,
2341 and the function returns the distance only if BASE is a public ancestor
2345 distance_to_ancestor (A, D, 1) = -1. */
2348 distance_to_ancestor (struct type
*base
, struct type
*dclass
, int public)
2353 CHECK_TYPEDEF (base
);
2354 CHECK_TYPEDEF (dclass
);
2356 if (class_types_same_p (base
, dclass
))
2359 for (i
= 0; i
< TYPE_N_BASECLASSES (dclass
); i
++)
2361 if (public && ! BASETYPE_VIA_PUBLIC (dclass
, i
))
2364 d
= distance_to_ancestor (base
, TYPE_BASECLASS (dclass
, i
), public);
2372 /* Check whether BASE is an ancestor or base class or DCLASS
2373 Return 1 if so, and 0 if not.
2374 Note: If BASE and DCLASS are of the same type, this function
2375 will return 1. So for some class A, is_ancestor (A, A) will
2379 is_ancestor (struct type
*base
, struct type
*dclass
)
2381 return distance_to_ancestor (base
, dclass
, 0) >= 0;
2384 /* Like is_ancestor, but only returns true when BASE is a public
2385 ancestor of DCLASS. */
2388 is_public_ancestor (struct type
*base
, struct type
*dclass
)
2390 return distance_to_ancestor (base
, dclass
, 1) >= 0;
2393 /* A helper function for is_unique_ancestor. */
2396 is_unique_ancestor_worker (struct type
*base
, struct type
*dclass
,
2398 const gdb_byte
*valaddr
, int embedded_offset
,
2399 CORE_ADDR address
, struct value
*val
)
2403 CHECK_TYPEDEF (base
);
2404 CHECK_TYPEDEF (dclass
);
2406 for (i
= 0; i
< TYPE_N_BASECLASSES (dclass
) && count
< 2; ++i
)
2411 iter
= check_typedef (TYPE_BASECLASS (dclass
, i
));
2413 this_offset
= baseclass_offset (dclass
, i
, valaddr
, embedded_offset
,
2416 if (class_types_same_p (base
, iter
))
2418 /* If this is the first subclass, set *OFFSET and set count
2419 to 1. Otherwise, if this is at the same offset as
2420 previous instances, do nothing. Otherwise, increment
2424 *offset
= this_offset
;
2427 else if (this_offset
== *offset
)
2435 count
+= is_unique_ancestor_worker (base
, iter
, offset
,
2437 embedded_offset
+ this_offset
,
2444 /* Like is_ancestor, but only returns true if BASE is a unique base
2445 class of the type of VAL. */
2448 is_unique_ancestor (struct type
*base
, struct value
*val
)
2452 return is_unique_ancestor_worker (base
, value_type (val
), &offset
,
2453 value_contents_for_printing (val
),
2454 value_embedded_offset (val
),
2455 value_address (val
), val
) == 1;
2459 /* Overload resolution. */
2461 /* Return the sum of the rank of A with the rank of B. */
2464 sum_ranks (struct rank a
, struct rank b
)
2467 c
.rank
= a
.rank
+ b
.rank
;
2468 c
.subrank
= a
.subrank
+ b
.subrank
;
2472 /* Compare rank A and B and return:
2474 1 if a is better than b
2475 -1 if b is better than a. */
2478 compare_ranks (struct rank a
, struct rank b
)
2480 if (a
.rank
== b
.rank
)
2482 if (a
.subrank
== b
.subrank
)
2484 if (a
.subrank
< b
.subrank
)
2486 if (a
.subrank
> b
.subrank
)
2490 if (a
.rank
< b
.rank
)
2493 /* a.rank > b.rank */
2497 /* Functions for overload resolution begin here. */
2499 /* Compare two badness vectors A and B and return the result.
2500 0 => A and B are identical
2501 1 => A and B are incomparable
2502 2 => A is better than B
2503 3 => A is worse than B */
2506 compare_badness (struct badness_vector
*a
, struct badness_vector
*b
)
2510 short found_pos
= 0; /* any positives in c? */
2511 short found_neg
= 0; /* any negatives in c? */
2513 /* differing lengths => incomparable */
2514 if (a
->length
!= b
->length
)
2517 /* Subtract b from a */
2518 for (i
= 0; i
< a
->length
; i
++)
2520 tmp
= compare_ranks (b
->rank
[i
], a
->rank
[i
]);
2530 return 1; /* incomparable */
2532 return 3; /* A > B */
2538 return 2; /* A < B */
2540 return 0; /* A == B */
2544 /* Rank a function by comparing its parameter types (PARMS, length
2545 NPARMS), to the types of an argument list (ARGS, length NARGS).
2546 Return a pointer to a badness vector. This has NARGS + 1
2549 struct badness_vector
*
2550 rank_function (struct type
**parms
, int nparms
,
2551 struct value
**args
, int nargs
)
2554 struct badness_vector
*bv
;
2555 int min_len
= nparms
< nargs
? nparms
: nargs
;
2557 bv
= xmalloc (sizeof (struct badness_vector
));
2558 bv
->length
= nargs
+ 1; /* add 1 for the length-match rank. */
2559 bv
->rank
= xmalloc ((nargs
+ 1) * sizeof (int));
2561 /* First compare the lengths of the supplied lists.
2562 If there is a mismatch, set it to a high value. */
2564 /* pai/1997-06-03 FIXME: when we have debug info about default
2565 arguments and ellipsis parameter lists, we should consider those
2566 and rank the length-match more finely. */
2568 LENGTH_MATCH (bv
) = (nargs
!= nparms
)
2569 ? LENGTH_MISMATCH_BADNESS
2570 : EXACT_MATCH_BADNESS
;
2572 /* Now rank all the parameters of the candidate function. */
2573 for (i
= 1; i
<= min_len
; i
++)
2574 bv
->rank
[i
] = rank_one_type (parms
[i
- 1], value_type (args
[i
- 1]),
2577 /* If more arguments than parameters, add dummy entries. */
2578 for (i
= min_len
+ 1; i
<= nargs
; i
++)
2579 bv
->rank
[i
] = TOO_FEW_PARAMS_BADNESS
;
2584 /* Compare the names of two integer types, assuming that any sign
2585 qualifiers have been checked already. We do it this way because
2586 there may be an "int" in the name of one of the types. */
2589 integer_types_same_name_p (const char *first
, const char *second
)
2591 int first_p
, second_p
;
2593 /* If both are shorts, return 1; if neither is a short, keep
2595 first_p
= (strstr (first
, "short") != NULL
);
2596 second_p
= (strstr (second
, "short") != NULL
);
2597 if (first_p
&& second_p
)
2599 if (first_p
|| second_p
)
2602 /* Likewise for long. */
2603 first_p
= (strstr (first
, "long") != NULL
);
2604 second_p
= (strstr (second
, "long") != NULL
);
2605 if (first_p
&& second_p
)
2607 if (first_p
|| second_p
)
2610 /* Likewise for char. */
2611 first_p
= (strstr (first
, "char") != NULL
);
2612 second_p
= (strstr (second
, "char") != NULL
);
2613 if (first_p
&& second_p
)
2615 if (first_p
|| second_p
)
2618 /* They must both be ints. */
2622 /* Compares type A to type B returns 1 if the represent the same type
2626 types_equal (struct type
*a
, struct type
*b
)
2628 /* Identical type pointers. */
2629 /* However, this still doesn't catch all cases of same type for b
2630 and a. The reason is that builtin types are different from
2631 the same ones constructed from the object. */
2635 /* Resolve typedefs */
2636 if (TYPE_CODE (a
) == TYPE_CODE_TYPEDEF
)
2637 a
= check_typedef (a
);
2638 if (TYPE_CODE (b
) == TYPE_CODE_TYPEDEF
)
2639 b
= check_typedef (b
);
2641 /* If after resolving typedefs a and b are not of the same type
2642 code then they are not equal. */
2643 if (TYPE_CODE (a
) != TYPE_CODE (b
))
2646 /* If a and b are both pointers types or both reference types then
2647 they are equal of the same type iff the objects they refer to are
2648 of the same type. */
2649 if (TYPE_CODE (a
) == TYPE_CODE_PTR
2650 || TYPE_CODE (a
) == TYPE_CODE_REF
)
2651 return types_equal (TYPE_TARGET_TYPE (a
),
2652 TYPE_TARGET_TYPE (b
));
2654 /* Well, damnit, if the names are exactly the same, I'll say they
2655 are exactly the same. This happens when we generate method
2656 stubs. The types won't point to the same address, but they
2657 really are the same. */
2659 if (TYPE_NAME (a
) && TYPE_NAME (b
)
2660 && strcmp (TYPE_NAME (a
), TYPE_NAME (b
)) == 0)
2663 /* Check if identical after resolving typedefs. */
2667 /* Two function types are equal if their argument and return types
2669 if (TYPE_CODE (a
) == TYPE_CODE_FUNC
)
2673 if (TYPE_NFIELDS (a
) != TYPE_NFIELDS (b
))
2676 if (!types_equal (TYPE_TARGET_TYPE (a
), TYPE_TARGET_TYPE (b
)))
2679 for (i
= 0; i
< TYPE_NFIELDS (a
); ++i
)
2680 if (!types_equal (TYPE_FIELD_TYPE (a
, i
), TYPE_FIELD_TYPE (b
, i
)))
2689 /* Deep comparison of types. */
2691 /* An entry in the type-equality bcache. */
2693 typedef struct type_equality_entry
2695 struct type
*type1
, *type2
;
2696 } type_equality_entry_d
;
2698 DEF_VEC_O (type_equality_entry_d
);
2700 /* A helper function to compare two strings. Returns 1 if they are
2701 the same, 0 otherwise. Handles NULLs properly. */
2704 compare_maybe_null_strings (const char *s
, const char *t
)
2706 if (s
== NULL
&& t
!= NULL
)
2708 else if (s
!= NULL
&& t
== NULL
)
2710 else if (s
== NULL
&& t
== NULL
)
2712 return strcmp (s
, t
) == 0;
2715 /* A helper function for check_types_worklist that checks two types for
2716 "deep" equality. Returns non-zero if the types are considered the
2717 same, zero otherwise. */
2720 check_types_equal (struct type
*type1
, struct type
*type2
,
2721 VEC (type_equality_entry_d
) **worklist
)
2723 CHECK_TYPEDEF (type1
);
2724 CHECK_TYPEDEF (type2
);
2729 if (TYPE_CODE (type1
) != TYPE_CODE (type2
)
2730 || TYPE_LENGTH (type1
) != TYPE_LENGTH (type2
)
2731 || TYPE_UNSIGNED (type1
) != TYPE_UNSIGNED (type2
)
2732 || TYPE_NOSIGN (type1
) != TYPE_NOSIGN (type2
)
2733 || TYPE_VARARGS (type1
) != TYPE_VARARGS (type2
)
2734 || TYPE_VECTOR (type1
) != TYPE_VECTOR (type2
)
2735 || TYPE_NOTTEXT (type1
) != TYPE_NOTTEXT (type2
)
2736 || TYPE_INSTANCE_FLAGS (type1
) != TYPE_INSTANCE_FLAGS (type2
)
2737 || TYPE_NFIELDS (type1
) != TYPE_NFIELDS (type2
))
2740 if (!compare_maybe_null_strings (TYPE_TAG_NAME (type1
),
2741 TYPE_TAG_NAME (type2
)))
2743 if (!compare_maybe_null_strings (TYPE_NAME (type1
), TYPE_NAME (type2
)))
2746 if (TYPE_CODE (type1
) == TYPE_CODE_RANGE
)
2748 if (memcmp (TYPE_RANGE_DATA (type1
), TYPE_RANGE_DATA (type2
),
2749 sizeof (*TYPE_RANGE_DATA (type1
))) != 0)
2756 for (i
= 0; i
< TYPE_NFIELDS (type1
); ++i
)
2758 const struct field
*field1
= &TYPE_FIELD (type1
, i
);
2759 const struct field
*field2
= &TYPE_FIELD (type2
, i
);
2760 struct type_equality_entry entry
;
2762 if (FIELD_ARTIFICIAL (*field1
) != FIELD_ARTIFICIAL (*field2
)
2763 || FIELD_BITSIZE (*field1
) != FIELD_BITSIZE (*field2
)
2764 || FIELD_LOC_KIND (*field1
) != FIELD_LOC_KIND (*field2
))
2766 if (!compare_maybe_null_strings (FIELD_NAME (*field1
),
2767 FIELD_NAME (*field2
)))
2769 switch (FIELD_LOC_KIND (*field1
))
2771 case FIELD_LOC_KIND_BITPOS
:
2772 if (FIELD_BITPOS (*field1
) != FIELD_BITPOS (*field2
))
2775 case FIELD_LOC_KIND_ENUMVAL
:
2776 if (FIELD_ENUMVAL (*field1
) != FIELD_ENUMVAL (*field2
))
2779 case FIELD_LOC_KIND_PHYSADDR
:
2780 if (FIELD_STATIC_PHYSADDR (*field1
)
2781 != FIELD_STATIC_PHYSADDR (*field2
))
2784 case FIELD_LOC_KIND_PHYSNAME
:
2785 if (!compare_maybe_null_strings (FIELD_STATIC_PHYSNAME (*field1
),
2786 FIELD_STATIC_PHYSNAME (*field2
)))
2789 case FIELD_LOC_KIND_DWARF_BLOCK
:
2791 struct dwarf2_locexpr_baton
*block1
, *block2
;
2793 block1
= FIELD_DWARF_BLOCK (*field1
);
2794 block2
= FIELD_DWARF_BLOCK (*field2
);
2795 if (block1
->per_cu
!= block2
->per_cu
2796 || block1
->size
!= block2
->size
2797 || memcmp (block1
->data
, block2
->data
, block1
->size
) != 0)
2802 internal_error (__FILE__
, __LINE__
, _("Unsupported field kind "
2803 "%d by check_types_equal"),
2804 FIELD_LOC_KIND (*field1
));
2807 entry
.type1
= FIELD_TYPE (*field1
);
2808 entry
.type2
= FIELD_TYPE (*field2
);
2809 VEC_safe_push (type_equality_entry_d
, *worklist
, &entry
);
2813 if (TYPE_TARGET_TYPE (type1
) != NULL
)
2815 struct type_equality_entry entry
;
2817 if (TYPE_TARGET_TYPE (type2
) == NULL
)
2820 entry
.type1
= TYPE_TARGET_TYPE (type1
);
2821 entry
.type2
= TYPE_TARGET_TYPE (type2
);
2822 VEC_safe_push (type_equality_entry_d
, *worklist
, &entry
);
2824 else if (TYPE_TARGET_TYPE (type2
) != NULL
)
2830 /* Check types on a worklist for equality. Returns zero if any pair
2831 is not equal, non-zero if they are all considered equal. */
2834 check_types_worklist (VEC (type_equality_entry_d
) **worklist
,
2835 struct bcache
*cache
)
2837 while (!VEC_empty (type_equality_entry_d
, *worklist
))
2839 struct type_equality_entry entry
;
2842 entry
= *VEC_last (type_equality_entry_d
, *worklist
);
2843 VEC_pop (type_equality_entry_d
, *worklist
);
2845 /* If the type pair has already been visited, we know it is
2847 bcache_full (&entry
, sizeof (entry
), cache
, &added
);
2851 if (check_types_equal (entry
.type1
, entry
.type2
, worklist
) == 0)
2858 /* Return non-zero if types TYPE1 and TYPE2 are equal, as determined by a
2859 "deep comparison". Otherwise return zero. */
2862 types_deeply_equal (struct type
*type1
, struct type
*type2
)
2864 volatile struct gdb_exception except
;
2866 struct bcache
*cache
;
2867 VEC (type_equality_entry_d
) *worklist
= NULL
;
2868 struct type_equality_entry entry
;
2870 gdb_assert (type1
!= NULL
&& type2
!= NULL
);
2872 /* Early exit for the simple case. */
2876 cache
= bcache_xmalloc (NULL
, NULL
);
2878 entry
.type1
= type1
;
2879 entry
.type2
= type2
;
2880 VEC_safe_push (type_equality_entry_d
, worklist
, &entry
);
2882 TRY_CATCH (except
, RETURN_MASK_ALL
)
2884 result
= check_types_worklist (&worklist
, cache
);
2886 /* check_types_worklist calls several nested helper functions,
2887 some of which can raise a GDB Exception, so we just check
2888 and rethrow here. If there is a GDB exception, a comparison
2889 is not capable (or trusted), so exit. */
2890 bcache_xfree (cache
);
2891 VEC_free (type_equality_entry_d
, worklist
);
2892 /* Rethrow if there was a problem. */
2893 if (except
.reason
< 0)
2894 throw_exception (except
);
2899 /* Compare one type (PARM) for compatibility with another (ARG).
2900 * PARM is intended to be the parameter type of a function; and
2901 * ARG is the supplied argument's type. This function tests if
2902 * the latter can be converted to the former.
2903 * VALUE is the argument's value or NULL if none (or called recursively)
2905 * Return 0 if they are identical types;
2906 * Otherwise, return an integer which corresponds to how compatible
2907 * PARM is to ARG. The higher the return value, the worse the match.
2908 * Generally the "bad" conversions are all uniformly assigned a 100. */
2911 rank_one_type (struct type
*parm
, struct type
*arg
, struct value
*value
)
2913 struct rank rank
= {0,0};
2915 if (types_equal (parm
, arg
))
2916 return EXACT_MATCH_BADNESS
;
2918 /* Resolve typedefs */
2919 if (TYPE_CODE (parm
) == TYPE_CODE_TYPEDEF
)
2920 parm
= check_typedef (parm
);
2921 if (TYPE_CODE (arg
) == TYPE_CODE_TYPEDEF
)
2922 arg
= check_typedef (arg
);
2924 /* See through references, since we can almost make non-references
2926 if (TYPE_CODE (arg
) == TYPE_CODE_REF
)
2927 return (sum_ranks (rank_one_type (parm
, TYPE_TARGET_TYPE (arg
), NULL
),
2928 REFERENCE_CONVERSION_BADNESS
));
2929 if (TYPE_CODE (parm
) == TYPE_CODE_REF
)
2930 return (sum_ranks (rank_one_type (TYPE_TARGET_TYPE (parm
), arg
, NULL
),
2931 REFERENCE_CONVERSION_BADNESS
));
2933 /* Debugging only. */
2934 fprintf_filtered (gdb_stderr
,
2935 "------ Arg is %s [%d], parm is %s [%d]\n",
2936 TYPE_NAME (arg
), TYPE_CODE (arg
),
2937 TYPE_NAME (parm
), TYPE_CODE (parm
));
2939 /* x -> y means arg of type x being supplied for parameter of type y. */
2941 switch (TYPE_CODE (parm
))
2944 switch (TYPE_CODE (arg
))
2948 /* Allowed pointer conversions are:
2949 (a) pointer to void-pointer conversion. */
2950 if (TYPE_CODE (TYPE_TARGET_TYPE (parm
)) == TYPE_CODE_VOID
)
2951 return VOID_PTR_CONVERSION_BADNESS
;
2953 /* (b) pointer to ancestor-pointer conversion. */
2954 rank
.subrank
= distance_to_ancestor (TYPE_TARGET_TYPE (parm
),
2955 TYPE_TARGET_TYPE (arg
),
2957 if (rank
.subrank
>= 0)
2958 return sum_ranks (BASE_PTR_CONVERSION_BADNESS
, rank
);
2960 return INCOMPATIBLE_TYPE_BADNESS
;
2961 case TYPE_CODE_ARRAY
:
2962 if (types_equal (TYPE_TARGET_TYPE (parm
),
2963 TYPE_TARGET_TYPE (arg
)))
2964 return EXACT_MATCH_BADNESS
;
2965 return INCOMPATIBLE_TYPE_BADNESS
;
2966 case TYPE_CODE_FUNC
:
2967 return rank_one_type (TYPE_TARGET_TYPE (parm
), arg
, NULL
);
2969 if (value
!= NULL
&& TYPE_CODE (value_type (value
)) == TYPE_CODE_INT
)
2971 if (value_as_long (value
) == 0)
2973 /* Null pointer conversion: allow it to be cast to a pointer.
2974 [4.10.1 of C++ standard draft n3290] */
2975 return NULL_POINTER_CONVERSION_BADNESS
;
2979 /* If type checking is disabled, allow the conversion. */
2980 if (!strict_type_checking
)
2981 return NS_INTEGER_POINTER_CONVERSION_BADNESS
;
2985 case TYPE_CODE_ENUM
:
2986 case TYPE_CODE_FLAGS
:
2987 case TYPE_CODE_CHAR
:
2988 case TYPE_CODE_RANGE
:
2989 case TYPE_CODE_BOOL
:
2991 return INCOMPATIBLE_TYPE_BADNESS
;
2993 case TYPE_CODE_ARRAY
:
2994 switch (TYPE_CODE (arg
))
2997 case TYPE_CODE_ARRAY
:
2998 return rank_one_type (TYPE_TARGET_TYPE (parm
),
2999 TYPE_TARGET_TYPE (arg
), NULL
);
3001 return INCOMPATIBLE_TYPE_BADNESS
;
3003 case TYPE_CODE_FUNC
:
3004 switch (TYPE_CODE (arg
))
3006 case TYPE_CODE_PTR
: /* funcptr -> func */
3007 return rank_one_type (parm
, TYPE_TARGET_TYPE (arg
), NULL
);
3009 return INCOMPATIBLE_TYPE_BADNESS
;
3012 switch (TYPE_CODE (arg
))
3015 if (TYPE_LENGTH (arg
) == TYPE_LENGTH (parm
))
3017 /* Deal with signed, unsigned, and plain chars and
3018 signed and unsigned ints. */
3019 if (TYPE_NOSIGN (parm
))
3021 /* This case only for character types. */
3022 if (TYPE_NOSIGN (arg
))
3023 return EXACT_MATCH_BADNESS
; /* plain char -> plain char */
3024 else /* signed/unsigned char -> plain char */
3025 return INTEGER_CONVERSION_BADNESS
;
3027 else if (TYPE_UNSIGNED (parm
))
3029 if (TYPE_UNSIGNED (arg
))
3031 /* unsigned int -> unsigned int, or
3032 unsigned long -> unsigned long */
3033 if (integer_types_same_name_p (TYPE_NAME (parm
),
3035 return EXACT_MATCH_BADNESS
;
3036 else if (integer_types_same_name_p (TYPE_NAME (arg
),
3038 && integer_types_same_name_p (TYPE_NAME (parm
),
3040 /* unsigned int -> unsigned long */
3041 return INTEGER_PROMOTION_BADNESS
;
3043 /* unsigned long -> unsigned int */
3044 return INTEGER_CONVERSION_BADNESS
;
3048 if (integer_types_same_name_p (TYPE_NAME (arg
),
3050 && integer_types_same_name_p (TYPE_NAME (parm
),
3052 /* signed long -> unsigned int */
3053 return INTEGER_CONVERSION_BADNESS
;
3055 /* signed int/long -> unsigned int/long */
3056 return INTEGER_CONVERSION_BADNESS
;
3059 else if (!TYPE_NOSIGN (arg
) && !TYPE_UNSIGNED (arg
))
3061 if (integer_types_same_name_p (TYPE_NAME (parm
),
3063 return EXACT_MATCH_BADNESS
;
3064 else if (integer_types_same_name_p (TYPE_NAME (arg
),
3066 && integer_types_same_name_p (TYPE_NAME (parm
),
3068 return INTEGER_PROMOTION_BADNESS
;
3070 return INTEGER_CONVERSION_BADNESS
;
3073 return INTEGER_CONVERSION_BADNESS
;
3075 else if (TYPE_LENGTH (arg
) < TYPE_LENGTH (parm
))
3076 return INTEGER_PROMOTION_BADNESS
;
3078 return INTEGER_CONVERSION_BADNESS
;
3079 case TYPE_CODE_ENUM
:
3080 case TYPE_CODE_FLAGS
:
3081 case TYPE_CODE_CHAR
:
3082 case TYPE_CODE_RANGE
:
3083 case TYPE_CODE_BOOL
:
3084 return INTEGER_PROMOTION_BADNESS
;
3086 return INT_FLOAT_CONVERSION_BADNESS
;
3088 return NS_POINTER_CONVERSION_BADNESS
;
3090 return INCOMPATIBLE_TYPE_BADNESS
;
3093 case TYPE_CODE_ENUM
:
3094 switch (TYPE_CODE (arg
))
3097 case TYPE_CODE_CHAR
:
3098 case TYPE_CODE_RANGE
:
3099 case TYPE_CODE_BOOL
:
3100 case TYPE_CODE_ENUM
:
3101 return INTEGER_CONVERSION_BADNESS
;
3103 return INT_FLOAT_CONVERSION_BADNESS
;
3105 return INCOMPATIBLE_TYPE_BADNESS
;
3108 case TYPE_CODE_CHAR
:
3109 switch (TYPE_CODE (arg
))
3111 case TYPE_CODE_RANGE
:
3112 case TYPE_CODE_BOOL
:
3113 case TYPE_CODE_ENUM
:
3114 return INTEGER_CONVERSION_BADNESS
;
3116 return INT_FLOAT_CONVERSION_BADNESS
;
3118 if (TYPE_LENGTH (arg
) > TYPE_LENGTH (parm
))
3119 return INTEGER_CONVERSION_BADNESS
;
3120 else if (TYPE_LENGTH (arg
) < TYPE_LENGTH (parm
))
3121 return INTEGER_PROMOTION_BADNESS
;
3122 /* >>> !! else fall through !! <<< */
3123 case TYPE_CODE_CHAR
:
3124 /* Deal with signed, unsigned, and plain chars for C++ and
3125 with int cases falling through from previous case. */
3126 if (TYPE_NOSIGN (parm
))
3128 if (TYPE_NOSIGN (arg
))
3129 return EXACT_MATCH_BADNESS
;
3131 return INTEGER_CONVERSION_BADNESS
;
3133 else if (TYPE_UNSIGNED (parm
))
3135 if (TYPE_UNSIGNED (arg
))
3136 return EXACT_MATCH_BADNESS
;
3138 return INTEGER_PROMOTION_BADNESS
;
3140 else if (!TYPE_NOSIGN (arg
) && !TYPE_UNSIGNED (arg
))
3141 return EXACT_MATCH_BADNESS
;
3143 return INTEGER_CONVERSION_BADNESS
;
3145 return INCOMPATIBLE_TYPE_BADNESS
;
3148 case TYPE_CODE_RANGE
:
3149 switch (TYPE_CODE (arg
))
3152 case TYPE_CODE_CHAR
:
3153 case TYPE_CODE_RANGE
:
3154 case TYPE_CODE_BOOL
:
3155 case TYPE_CODE_ENUM
:
3156 return INTEGER_CONVERSION_BADNESS
;
3158 return INT_FLOAT_CONVERSION_BADNESS
;
3160 return INCOMPATIBLE_TYPE_BADNESS
;
3163 case TYPE_CODE_BOOL
:
3164 switch (TYPE_CODE (arg
))
3166 /* n3290 draft, section 4.12.1 (conv.bool):
3168 "A prvalue of arithmetic, unscoped enumeration, pointer, or
3169 pointer to member type can be converted to a prvalue of type
3170 bool. A zero value, null pointer value, or null member pointer
3171 value is converted to false; any other value is converted to
3172 true. A prvalue of type std::nullptr_t can be converted to a
3173 prvalue of type bool; the resulting value is false." */
3175 case TYPE_CODE_CHAR
:
3176 case TYPE_CODE_ENUM
:
3178 case TYPE_CODE_MEMBERPTR
:
3180 return BOOL_CONVERSION_BADNESS
;
3181 case TYPE_CODE_RANGE
:
3182 return INCOMPATIBLE_TYPE_BADNESS
;
3183 case TYPE_CODE_BOOL
:
3184 return EXACT_MATCH_BADNESS
;
3186 return INCOMPATIBLE_TYPE_BADNESS
;
3190 switch (TYPE_CODE (arg
))
3193 if (TYPE_LENGTH (arg
) < TYPE_LENGTH (parm
))
3194 return FLOAT_PROMOTION_BADNESS
;
3195 else if (TYPE_LENGTH (arg
) == TYPE_LENGTH (parm
))
3196 return EXACT_MATCH_BADNESS
;
3198 return FLOAT_CONVERSION_BADNESS
;
3200 case TYPE_CODE_BOOL
:
3201 case TYPE_CODE_ENUM
:
3202 case TYPE_CODE_RANGE
:
3203 case TYPE_CODE_CHAR
:
3204 return INT_FLOAT_CONVERSION_BADNESS
;
3206 return INCOMPATIBLE_TYPE_BADNESS
;
3209 case TYPE_CODE_COMPLEX
:
3210 switch (TYPE_CODE (arg
))
3211 { /* Strictly not needed for C++, but... */
3213 return FLOAT_PROMOTION_BADNESS
;
3214 case TYPE_CODE_COMPLEX
:
3215 return EXACT_MATCH_BADNESS
;
3217 return INCOMPATIBLE_TYPE_BADNESS
;
3220 case TYPE_CODE_STRUCT
:
3221 /* currently same as TYPE_CODE_CLASS. */
3222 switch (TYPE_CODE (arg
))
3224 case TYPE_CODE_STRUCT
:
3225 /* Check for derivation */
3226 rank
.subrank
= distance_to_ancestor (parm
, arg
, 0);
3227 if (rank
.subrank
>= 0)
3228 return sum_ranks (BASE_CONVERSION_BADNESS
, rank
);
3229 /* else fall through */
3231 return INCOMPATIBLE_TYPE_BADNESS
;
3234 case TYPE_CODE_UNION
:
3235 switch (TYPE_CODE (arg
))
3237 case TYPE_CODE_UNION
:
3239 return INCOMPATIBLE_TYPE_BADNESS
;
3242 case TYPE_CODE_MEMBERPTR
:
3243 switch (TYPE_CODE (arg
))
3246 return INCOMPATIBLE_TYPE_BADNESS
;
3249 case TYPE_CODE_METHOD
:
3250 switch (TYPE_CODE (arg
))
3254 return INCOMPATIBLE_TYPE_BADNESS
;
3258 switch (TYPE_CODE (arg
))
3262 return INCOMPATIBLE_TYPE_BADNESS
;
3267 switch (TYPE_CODE (arg
))
3271 return rank_one_type (TYPE_FIELD_TYPE (parm
, 0),
3272 TYPE_FIELD_TYPE (arg
, 0), NULL
);
3274 return INCOMPATIBLE_TYPE_BADNESS
;
3277 case TYPE_CODE_VOID
:
3279 return INCOMPATIBLE_TYPE_BADNESS
;
3280 } /* switch (TYPE_CODE (arg)) */
3283 /* End of functions for overload resolution. */
3285 /* Routines to pretty-print types. */
3288 print_bit_vector (B_TYPE
*bits
, int nbits
)
3292 for (bitno
= 0; bitno
< nbits
; bitno
++)
3294 if ((bitno
% 8) == 0)
3296 puts_filtered (" ");
3298 if (B_TST (bits
, bitno
))
3299 printf_filtered (("1"));
3301 printf_filtered (("0"));
3305 /* Note the first arg should be the "this" pointer, we may not want to
3306 include it since we may get into a infinitely recursive
3310 print_arg_types (struct field
*args
, int nargs
, int spaces
)
3316 for (i
= 0; i
< nargs
; i
++)
3317 recursive_dump_type (args
[i
].type
, spaces
+ 2);
3322 field_is_static (struct field
*f
)
3324 /* "static" fields are the fields whose location is not relative
3325 to the address of the enclosing struct. It would be nice to
3326 have a dedicated flag that would be set for static fields when
3327 the type is being created. But in practice, checking the field
3328 loc_kind should give us an accurate answer. */
3329 return (FIELD_LOC_KIND (*f
) == FIELD_LOC_KIND_PHYSNAME
3330 || FIELD_LOC_KIND (*f
) == FIELD_LOC_KIND_PHYSADDR
);
3334 dump_fn_fieldlists (struct type
*type
, int spaces
)
3340 printfi_filtered (spaces
, "fn_fieldlists ");
3341 gdb_print_host_address (TYPE_FN_FIELDLISTS (type
), gdb_stdout
);
3342 printf_filtered ("\n");
3343 for (method_idx
= 0; method_idx
< TYPE_NFN_FIELDS (type
); method_idx
++)
3345 f
= TYPE_FN_FIELDLIST1 (type
, method_idx
);
3346 printfi_filtered (spaces
+ 2, "[%d] name '%s' (",
3348 TYPE_FN_FIELDLIST_NAME (type
, method_idx
));
3349 gdb_print_host_address (TYPE_FN_FIELDLIST_NAME (type
, method_idx
),
3351 printf_filtered (_(") length %d\n"),
3352 TYPE_FN_FIELDLIST_LENGTH (type
, method_idx
));
3353 for (overload_idx
= 0;
3354 overload_idx
< TYPE_FN_FIELDLIST_LENGTH (type
, method_idx
);
3357 printfi_filtered (spaces
+ 4, "[%d] physname '%s' (",
3359 TYPE_FN_FIELD_PHYSNAME (f
, overload_idx
));
3360 gdb_print_host_address (TYPE_FN_FIELD_PHYSNAME (f
, overload_idx
),
3362 printf_filtered (")\n");
3363 printfi_filtered (spaces
+ 8, "type ");
3364 gdb_print_host_address (TYPE_FN_FIELD_TYPE (f
, overload_idx
),
3366 printf_filtered ("\n");
3368 recursive_dump_type (TYPE_FN_FIELD_TYPE (f
, overload_idx
),
3371 printfi_filtered (spaces
+ 8, "args ");
3372 gdb_print_host_address (TYPE_FN_FIELD_ARGS (f
, overload_idx
),
3374 printf_filtered ("\n");
3376 print_arg_types (TYPE_FN_FIELD_ARGS (f
, overload_idx
),
3377 TYPE_NFIELDS (TYPE_FN_FIELD_TYPE (f
,
3380 printfi_filtered (spaces
+ 8, "fcontext ");
3381 gdb_print_host_address (TYPE_FN_FIELD_FCONTEXT (f
, overload_idx
),
3383 printf_filtered ("\n");
3385 printfi_filtered (spaces
+ 8, "is_const %d\n",
3386 TYPE_FN_FIELD_CONST (f
, overload_idx
));
3387 printfi_filtered (spaces
+ 8, "is_volatile %d\n",
3388 TYPE_FN_FIELD_VOLATILE (f
, overload_idx
));
3389 printfi_filtered (spaces
+ 8, "is_private %d\n",
3390 TYPE_FN_FIELD_PRIVATE (f
, overload_idx
));
3391 printfi_filtered (spaces
+ 8, "is_protected %d\n",
3392 TYPE_FN_FIELD_PROTECTED (f
, overload_idx
));
3393 printfi_filtered (spaces
+ 8, "is_stub %d\n",
3394 TYPE_FN_FIELD_STUB (f
, overload_idx
));
3395 printfi_filtered (spaces
+ 8, "voffset %u\n",
3396 TYPE_FN_FIELD_VOFFSET (f
, overload_idx
));
3402 print_cplus_stuff (struct type
*type
, int spaces
)
3404 printfi_filtered (spaces
, "n_baseclasses %d\n",
3405 TYPE_N_BASECLASSES (type
));
3406 printfi_filtered (spaces
, "nfn_fields %d\n",
3407 TYPE_NFN_FIELDS (type
));
3408 if (TYPE_N_BASECLASSES (type
) > 0)
3410 printfi_filtered (spaces
, "virtual_field_bits (%d bits at *",
3411 TYPE_N_BASECLASSES (type
));
3412 gdb_print_host_address (TYPE_FIELD_VIRTUAL_BITS (type
),
3414 printf_filtered (")");
3416 print_bit_vector (TYPE_FIELD_VIRTUAL_BITS (type
),
3417 TYPE_N_BASECLASSES (type
));
3418 puts_filtered ("\n");
3420 if (TYPE_NFIELDS (type
) > 0)
3422 if (TYPE_FIELD_PRIVATE_BITS (type
) != NULL
)
3424 printfi_filtered (spaces
,
3425 "private_field_bits (%d bits at *",
3426 TYPE_NFIELDS (type
));
3427 gdb_print_host_address (TYPE_FIELD_PRIVATE_BITS (type
),
3429 printf_filtered (")");
3430 print_bit_vector (TYPE_FIELD_PRIVATE_BITS (type
),
3431 TYPE_NFIELDS (type
));
3432 puts_filtered ("\n");
3434 if (TYPE_FIELD_PROTECTED_BITS (type
) != NULL
)
3436 printfi_filtered (spaces
,
3437 "protected_field_bits (%d bits at *",
3438 TYPE_NFIELDS (type
));
3439 gdb_print_host_address (TYPE_FIELD_PROTECTED_BITS (type
),
3441 printf_filtered (")");
3442 print_bit_vector (TYPE_FIELD_PROTECTED_BITS (type
),
3443 TYPE_NFIELDS (type
));
3444 puts_filtered ("\n");
3447 if (TYPE_NFN_FIELDS (type
) > 0)
3449 dump_fn_fieldlists (type
, spaces
);
3453 /* Print the contents of the TYPE's type_specific union, assuming that
3454 its type-specific kind is TYPE_SPECIFIC_GNAT_STUFF. */
3457 print_gnat_stuff (struct type
*type
, int spaces
)
3459 struct type
*descriptive_type
= TYPE_DESCRIPTIVE_TYPE (type
);
3461 recursive_dump_type (descriptive_type
, spaces
+ 2);
3464 static struct obstack dont_print_type_obstack
;
3467 recursive_dump_type (struct type
*type
, int spaces
)
3472 obstack_begin (&dont_print_type_obstack
, 0);
3474 if (TYPE_NFIELDS (type
) > 0
3475 || (HAVE_CPLUS_STRUCT (type
) && TYPE_NFN_FIELDS (type
) > 0))
3477 struct type
**first_dont_print
3478 = (struct type
**) obstack_base (&dont_print_type_obstack
);
3480 int i
= (struct type
**)
3481 obstack_next_free (&dont_print_type_obstack
) - first_dont_print
;
3485 if (type
== first_dont_print
[i
])
3487 printfi_filtered (spaces
, "type node ");
3488 gdb_print_host_address (type
, gdb_stdout
);
3489 printf_filtered (_(" <same as already seen type>\n"));
3494 obstack_ptr_grow (&dont_print_type_obstack
, type
);
3497 printfi_filtered (spaces
, "type node ");
3498 gdb_print_host_address (type
, gdb_stdout
);
3499 printf_filtered ("\n");
3500 printfi_filtered (spaces
, "name '%s' (",
3501 TYPE_NAME (type
) ? TYPE_NAME (type
) : "<NULL>");
3502 gdb_print_host_address (TYPE_NAME (type
), gdb_stdout
);
3503 printf_filtered (")\n");
3504 printfi_filtered (spaces
, "tagname '%s' (",
3505 TYPE_TAG_NAME (type
) ? TYPE_TAG_NAME (type
) : "<NULL>");
3506 gdb_print_host_address (TYPE_TAG_NAME (type
), gdb_stdout
);
3507 printf_filtered (")\n");
3508 printfi_filtered (spaces
, "code 0x%x ", TYPE_CODE (type
));
3509 switch (TYPE_CODE (type
))
3511 case TYPE_CODE_UNDEF
:
3512 printf_filtered ("(TYPE_CODE_UNDEF)");
3515 printf_filtered ("(TYPE_CODE_PTR)");
3517 case TYPE_CODE_ARRAY
:
3518 printf_filtered ("(TYPE_CODE_ARRAY)");
3520 case TYPE_CODE_STRUCT
:
3521 printf_filtered ("(TYPE_CODE_STRUCT)");
3523 case TYPE_CODE_UNION
:
3524 printf_filtered ("(TYPE_CODE_UNION)");
3526 case TYPE_CODE_ENUM
:
3527 printf_filtered ("(TYPE_CODE_ENUM)");
3529 case TYPE_CODE_FLAGS
:
3530 printf_filtered ("(TYPE_CODE_FLAGS)");
3532 case TYPE_CODE_FUNC
:
3533 printf_filtered ("(TYPE_CODE_FUNC)");
3536 printf_filtered ("(TYPE_CODE_INT)");
3539 printf_filtered ("(TYPE_CODE_FLT)");
3541 case TYPE_CODE_VOID
:
3542 printf_filtered ("(TYPE_CODE_VOID)");
3545 printf_filtered ("(TYPE_CODE_SET)");
3547 case TYPE_CODE_RANGE
:
3548 printf_filtered ("(TYPE_CODE_RANGE)");
3550 case TYPE_CODE_STRING
:
3551 printf_filtered ("(TYPE_CODE_STRING)");
3553 case TYPE_CODE_ERROR
:
3554 printf_filtered ("(TYPE_CODE_ERROR)");
3556 case TYPE_CODE_MEMBERPTR
:
3557 printf_filtered ("(TYPE_CODE_MEMBERPTR)");
3559 case TYPE_CODE_METHODPTR
:
3560 printf_filtered ("(TYPE_CODE_METHODPTR)");
3562 case TYPE_CODE_METHOD
:
3563 printf_filtered ("(TYPE_CODE_METHOD)");
3566 printf_filtered ("(TYPE_CODE_REF)");
3568 case TYPE_CODE_CHAR
:
3569 printf_filtered ("(TYPE_CODE_CHAR)");
3571 case TYPE_CODE_BOOL
:
3572 printf_filtered ("(TYPE_CODE_BOOL)");
3574 case TYPE_CODE_COMPLEX
:
3575 printf_filtered ("(TYPE_CODE_COMPLEX)");
3577 case TYPE_CODE_TYPEDEF
:
3578 printf_filtered ("(TYPE_CODE_TYPEDEF)");
3580 case TYPE_CODE_NAMESPACE
:
3581 printf_filtered ("(TYPE_CODE_NAMESPACE)");
3584 printf_filtered ("(UNKNOWN TYPE CODE)");
3587 puts_filtered ("\n");
3588 printfi_filtered (spaces
, "length %d\n", TYPE_LENGTH (type
));
3589 if (TYPE_OBJFILE_OWNED (type
))
3591 printfi_filtered (spaces
, "objfile ");
3592 gdb_print_host_address (TYPE_OWNER (type
).objfile
, gdb_stdout
);
3596 printfi_filtered (spaces
, "gdbarch ");
3597 gdb_print_host_address (TYPE_OWNER (type
).gdbarch
, gdb_stdout
);
3599 printf_filtered ("\n");
3600 printfi_filtered (spaces
, "target_type ");
3601 gdb_print_host_address (TYPE_TARGET_TYPE (type
), gdb_stdout
);
3602 printf_filtered ("\n");
3603 if (TYPE_TARGET_TYPE (type
) != NULL
)
3605 recursive_dump_type (TYPE_TARGET_TYPE (type
), spaces
+ 2);
3607 printfi_filtered (spaces
, "pointer_type ");
3608 gdb_print_host_address (TYPE_POINTER_TYPE (type
), gdb_stdout
);
3609 printf_filtered ("\n");
3610 printfi_filtered (spaces
, "reference_type ");
3611 gdb_print_host_address (TYPE_REFERENCE_TYPE (type
), gdb_stdout
);
3612 printf_filtered ("\n");
3613 printfi_filtered (spaces
, "type_chain ");
3614 gdb_print_host_address (TYPE_CHAIN (type
), gdb_stdout
);
3615 printf_filtered ("\n");
3616 printfi_filtered (spaces
, "instance_flags 0x%x",
3617 TYPE_INSTANCE_FLAGS (type
));
3618 if (TYPE_CONST (type
))
3620 puts_filtered (" TYPE_FLAG_CONST");
3622 if (TYPE_VOLATILE (type
))
3624 puts_filtered (" TYPE_FLAG_VOLATILE");
3626 if (TYPE_CODE_SPACE (type
))
3628 puts_filtered (" TYPE_FLAG_CODE_SPACE");
3630 if (TYPE_DATA_SPACE (type
))
3632 puts_filtered (" TYPE_FLAG_DATA_SPACE");
3634 if (TYPE_ADDRESS_CLASS_1 (type
))
3636 puts_filtered (" TYPE_FLAG_ADDRESS_CLASS_1");
3638 if (TYPE_ADDRESS_CLASS_2 (type
))
3640 puts_filtered (" TYPE_FLAG_ADDRESS_CLASS_2");
3642 if (TYPE_RESTRICT (type
))
3644 puts_filtered (" TYPE_FLAG_RESTRICT");
3646 puts_filtered ("\n");
3648 printfi_filtered (spaces
, "flags");
3649 if (TYPE_UNSIGNED (type
))
3651 puts_filtered (" TYPE_FLAG_UNSIGNED");
3653 if (TYPE_NOSIGN (type
))
3655 puts_filtered (" TYPE_FLAG_NOSIGN");
3657 if (TYPE_STUB (type
))
3659 puts_filtered (" TYPE_FLAG_STUB");
3661 if (TYPE_TARGET_STUB (type
))
3663 puts_filtered (" TYPE_FLAG_TARGET_STUB");
3665 if (TYPE_STATIC (type
))
3667 puts_filtered (" TYPE_FLAG_STATIC");
3669 if (TYPE_PROTOTYPED (type
))
3671 puts_filtered (" TYPE_FLAG_PROTOTYPED");
3673 if (TYPE_INCOMPLETE (type
))
3675 puts_filtered (" TYPE_FLAG_INCOMPLETE");
3677 if (TYPE_VARARGS (type
))
3679 puts_filtered (" TYPE_FLAG_VARARGS");
3681 /* This is used for things like AltiVec registers on ppc. Gcc emits
3682 an attribute for the array type, which tells whether or not we
3683 have a vector, instead of a regular array. */
3684 if (TYPE_VECTOR (type
))
3686 puts_filtered (" TYPE_FLAG_VECTOR");
3688 if (TYPE_FIXED_INSTANCE (type
))
3690 puts_filtered (" TYPE_FIXED_INSTANCE");
3692 if (TYPE_STUB_SUPPORTED (type
))
3694 puts_filtered (" TYPE_STUB_SUPPORTED");
3696 if (TYPE_NOTTEXT (type
))
3698 puts_filtered (" TYPE_NOTTEXT");
3700 puts_filtered ("\n");
3701 printfi_filtered (spaces
, "nfields %d ", TYPE_NFIELDS (type
));
3702 gdb_print_host_address (TYPE_FIELDS (type
), gdb_stdout
);
3703 puts_filtered ("\n");
3704 for (idx
= 0; idx
< TYPE_NFIELDS (type
); idx
++)
3706 if (TYPE_CODE (type
) == TYPE_CODE_ENUM
)
3707 printfi_filtered (spaces
+ 2,
3708 "[%d] enumval %s type ",
3709 idx
, plongest (TYPE_FIELD_ENUMVAL (type
, idx
)));
3711 printfi_filtered (spaces
+ 2,
3712 "[%d] bitpos %d bitsize %d type ",
3713 idx
, TYPE_FIELD_BITPOS (type
, idx
),
3714 TYPE_FIELD_BITSIZE (type
, idx
));
3715 gdb_print_host_address (TYPE_FIELD_TYPE (type
, idx
), gdb_stdout
);
3716 printf_filtered (" name '%s' (",
3717 TYPE_FIELD_NAME (type
, idx
) != NULL
3718 ? TYPE_FIELD_NAME (type
, idx
)
3720 gdb_print_host_address (TYPE_FIELD_NAME (type
, idx
), gdb_stdout
);
3721 printf_filtered (")\n");
3722 if (TYPE_FIELD_TYPE (type
, idx
) != NULL
)
3724 recursive_dump_type (TYPE_FIELD_TYPE (type
, idx
), spaces
+ 4);
3727 if (TYPE_CODE (type
) == TYPE_CODE_RANGE
)
3729 printfi_filtered (spaces
, "low %s%s high %s%s\n",
3730 plongest (TYPE_LOW_BOUND (type
)),
3731 TYPE_LOW_BOUND_UNDEFINED (type
) ? " (undefined)" : "",
3732 plongest (TYPE_HIGH_BOUND (type
)),
3733 TYPE_HIGH_BOUND_UNDEFINED (type
)
3734 ? " (undefined)" : "");
3736 printfi_filtered (spaces
, "vptr_basetype ");
3737 gdb_print_host_address (TYPE_VPTR_BASETYPE (type
), gdb_stdout
);
3738 puts_filtered ("\n");
3739 if (TYPE_VPTR_BASETYPE (type
) != NULL
)
3741 recursive_dump_type (TYPE_VPTR_BASETYPE (type
), spaces
+ 2);
3743 printfi_filtered (spaces
, "vptr_fieldno %d\n",
3744 TYPE_VPTR_FIELDNO (type
));
3746 switch (TYPE_SPECIFIC_FIELD (type
))
3748 case TYPE_SPECIFIC_CPLUS_STUFF
:
3749 printfi_filtered (spaces
, "cplus_stuff ");
3750 gdb_print_host_address (TYPE_CPLUS_SPECIFIC (type
),
3752 puts_filtered ("\n");
3753 print_cplus_stuff (type
, spaces
);
3756 case TYPE_SPECIFIC_GNAT_STUFF
:
3757 printfi_filtered (spaces
, "gnat_stuff ");
3758 gdb_print_host_address (TYPE_GNAT_SPECIFIC (type
), gdb_stdout
);
3759 puts_filtered ("\n");
3760 print_gnat_stuff (type
, spaces
);
3763 case TYPE_SPECIFIC_FLOATFORMAT
:
3764 printfi_filtered (spaces
, "floatformat ");
3765 if (TYPE_FLOATFORMAT (type
) == NULL
)
3766 puts_filtered ("(null)");
3769 puts_filtered ("{ ");
3770 if (TYPE_FLOATFORMAT (type
)[0] == NULL
3771 || TYPE_FLOATFORMAT (type
)[0]->name
== NULL
)
3772 puts_filtered ("(null)");
3774 puts_filtered (TYPE_FLOATFORMAT (type
)[0]->name
);
3776 puts_filtered (", ");
3777 if (TYPE_FLOATFORMAT (type
)[1] == NULL
3778 || TYPE_FLOATFORMAT (type
)[1]->name
== NULL
)
3779 puts_filtered ("(null)");
3781 puts_filtered (TYPE_FLOATFORMAT (type
)[1]->name
);
3783 puts_filtered (" }");
3785 puts_filtered ("\n");
3788 case TYPE_SPECIFIC_FUNC
:
3789 printfi_filtered (spaces
, "calling_convention %d\n",
3790 TYPE_CALLING_CONVENTION (type
));
3791 /* tail_call_list is not printed. */
3796 obstack_free (&dont_print_type_obstack
, NULL
);
3799 /* Trivial helpers for the libiberty hash table, for mapping one
3804 struct type
*old
, *new;
3808 type_pair_hash (const void *item
)
3810 const struct type_pair
*pair
= item
;
3812 return htab_hash_pointer (pair
->old
);
3816 type_pair_eq (const void *item_lhs
, const void *item_rhs
)
3818 const struct type_pair
*lhs
= item_lhs
, *rhs
= item_rhs
;
3820 return lhs
->old
== rhs
->old
;
3823 /* Allocate the hash table used by copy_type_recursive to walk
3824 types without duplicates. We use OBJFILE's obstack, because
3825 OBJFILE is about to be deleted. */
3828 create_copied_types_hash (struct objfile
*objfile
)
3830 return htab_create_alloc_ex (1, type_pair_hash
, type_pair_eq
,
3831 NULL
, &objfile
->objfile_obstack
,
3832 hashtab_obstack_allocate
,
3833 dummy_obstack_deallocate
);
3836 /* Recursively copy (deep copy) TYPE, if it is associated with
3837 OBJFILE. Return a new type allocated using malloc, a saved type if
3838 we have already visited TYPE (using COPIED_TYPES), or TYPE if it is
3839 not associated with OBJFILE. */
3842 copy_type_recursive (struct objfile
*objfile
,
3844 htab_t copied_types
)
3846 struct type_pair
*stored
, pair
;
3848 struct type
*new_type
;
3850 if (! TYPE_OBJFILE_OWNED (type
))
3853 /* This type shouldn't be pointing to any types in other objfiles;
3854 if it did, the type might disappear unexpectedly. */
3855 gdb_assert (TYPE_OBJFILE (type
) == objfile
);
3858 slot
= htab_find_slot (copied_types
, &pair
, INSERT
);
3860 return ((struct type_pair
*) *slot
)->new;
3862 new_type
= alloc_type_arch (get_type_arch (type
));
3864 /* We must add the new type to the hash table immediately, in case
3865 we encounter this type again during a recursive call below. */
3867 = obstack_alloc (&objfile
->objfile_obstack
, sizeof (struct type_pair
));
3869 stored
->new = new_type
;
3872 /* Copy the common fields of types. For the main type, we simply
3873 copy the entire thing and then update specific fields as needed. */
3874 *TYPE_MAIN_TYPE (new_type
) = *TYPE_MAIN_TYPE (type
);
3875 TYPE_OBJFILE_OWNED (new_type
) = 0;
3876 TYPE_OWNER (new_type
).gdbarch
= get_type_arch (type
);
3878 if (TYPE_NAME (type
))
3879 TYPE_NAME (new_type
) = xstrdup (TYPE_NAME (type
));
3880 if (TYPE_TAG_NAME (type
))
3881 TYPE_TAG_NAME (new_type
) = xstrdup (TYPE_TAG_NAME (type
));
3883 TYPE_INSTANCE_FLAGS (new_type
) = TYPE_INSTANCE_FLAGS (type
);
3884 TYPE_LENGTH (new_type
) = TYPE_LENGTH (type
);
3886 /* Copy the fields. */
3887 if (TYPE_NFIELDS (type
))
3891 nfields
= TYPE_NFIELDS (type
);
3892 TYPE_FIELDS (new_type
) = XCNEWVEC (struct field
, nfields
);
3893 for (i
= 0; i
< nfields
; i
++)
3895 TYPE_FIELD_ARTIFICIAL (new_type
, i
) =
3896 TYPE_FIELD_ARTIFICIAL (type
, i
);
3897 TYPE_FIELD_BITSIZE (new_type
, i
) = TYPE_FIELD_BITSIZE (type
, i
);
3898 if (TYPE_FIELD_TYPE (type
, i
))
3899 TYPE_FIELD_TYPE (new_type
, i
)
3900 = copy_type_recursive (objfile
, TYPE_FIELD_TYPE (type
, i
),
3902 if (TYPE_FIELD_NAME (type
, i
))
3903 TYPE_FIELD_NAME (new_type
, i
) =
3904 xstrdup (TYPE_FIELD_NAME (type
, i
));
3905 switch (TYPE_FIELD_LOC_KIND (type
, i
))
3907 case FIELD_LOC_KIND_BITPOS
:
3908 SET_FIELD_BITPOS (TYPE_FIELD (new_type
, i
),
3909 TYPE_FIELD_BITPOS (type
, i
));
3911 case FIELD_LOC_KIND_ENUMVAL
:
3912 SET_FIELD_ENUMVAL (TYPE_FIELD (new_type
, i
),
3913 TYPE_FIELD_ENUMVAL (type
, i
));
3915 case FIELD_LOC_KIND_PHYSADDR
:
3916 SET_FIELD_PHYSADDR (TYPE_FIELD (new_type
, i
),
3917 TYPE_FIELD_STATIC_PHYSADDR (type
, i
));
3919 case FIELD_LOC_KIND_PHYSNAME
:
3920 SET_FIELD_PHYSNAME (TYPE_FIELD (new_type
, i
),
3921 xstrdup (TYPE_FIELD_STATIC_PHYSNAME (type
,
3925 internal_error (__FILE__
, __LINE__
,
3926 _("Unexpected type field location kind: %d"),
3927 TYPE_FIELD_LOC_KIND (type
, i
));
3932 /* For range types, copy the bounds information. */
3933 if (TYPE_CODE (type
) == TYPE_CODE_RANGE
)
3935 TYPE_RANGE_DATA (new_type
) = xmalloc (sizeof (struct range_bounds
));
3936 *TYPE_RANGE_DATA (new_type
) = *TYPE_RANGE_DATA (type
);
3939 /* Copy pointers to other types. */
3940 if (TYPE_TARGET_TYPE (type
))
3941 TYPE_TARGET_TYPE (new_type
) =
3942 copy_type_recursive (objfile
,
3943 TYPE_TARGET_TYPE (type
),
3945 if (TYPE_VPTR_BASETYPE (type
))
3946 TYPE_VPTR_BASETYPE (new_type
) =
3947 copy_type_recursive (objfile
,
3948 TYPE_VPTR_BASETYPE (type
),
3950 /* Maybe copy the type_specific bits.
3952 NOTE drow/2005-12-09: We do not copy the C++-specific bits like
3953 base classes and methods. There's no fundamental reason why we
3954 can't, but at the moment it is not needed. */
3956 if (TYPE_CODE (type
) == TYPE_CODE_FLT
)
3957 TYPE_FLOATFORMAT (new_type
) = TYPE_FLOATFORMAT (type
);
3958 else if (TYPE_CODE (type
) == TYPE_CODE_STRUCT
3959 || TYPE_CODE (type
) == TYPE_CODE_UNION
3960 || TYPE_CODE (type
) == TYPE_CODE_NAMESPACE
)
3961 INIT_CPLUS_SPECIFIC (new_type
);
3966 /* Make a copy of the given TYPE, except that the pointer & reference
3967 types are not preserved.
3969 This function assumes that the given type has an associated objfile.
3970 This objfile is used to allocate the new type. */
3973 copy_type (const struct type
*type
)
3975 struct type
*new_type
;
3977 gdb_assert (TYPE_OBJFILE_OWNED (type
));
3979 new_type
= alloc_type_copy (type
);
3980 TYPE_INSTANCE_FLAGS (new_type
) = TYPE_INSTANCE_FLAGS (type
);
3981 TYPE_LENGTH (new_type
) = TYPE_LENGTH (type
);
3982 memcpy (TYPE_MAIN_TYPE (new_type
), TYPE_MAIN_TYPE (type
),
3983 sizeof (struct main_type
));
3988 /* Helper functions to initialize architecture-specific types. */
3990 /* Allocate a type structure associated with GDBARCH and set its
3991 CODE, LENGTH, and NAME fields. */
3994 arch_type (struct gdbarch
*gdbarch
,
3995 enum type_code code
, int length
, char *name
)
3999 type
= alloc_type_arch (gdbarch
);
4000 TYPE_CODE (type
) = code
;
4001 TYPE_LENGTH (type
) = length
;
4004 TYPE_NAME (type
) = xstrdup (name
);
4009 /* Allocate a TYPE_CODE_INT type structure associated with GDBARCH.
4010 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
4011 the type's TYPE_UNSIGNED flag. NAME is the type name. */
4014 arch_integer_type (struct gdbarch
*gdbarch
,
4015 int bit
, int unsigned_p
, char *name
)
4019 t
= arch_type (gdbarch
, TYPE_CODE_INT
, bit
/ TARGET_CHAR_BIT
, name
);
4021 TYPE_UNSIGNED (t
) = 1;
4022 if (name
&& strcmp (name
, "char") == 0)
4023 TYPE_NOSIGN (t
) = 1;
4028 /* Allocate a TYPE_CODE_CHAR type structure associated with GDBARCH.
4029 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
4030 the type's TYPE_UNSIGNED flag. NAME is the type name. */
4033 arch_character_type (struct gdbarch
*gdbarch
,
4034 int bit
, int unsigned_p
, char *name
)
4038 t
= arch_type (gdbarch
, TYPE_CODE_CHAR
, bit
/ TARGET_CHAR_BIT
, name
);
4040 TYPE_UNSIGNED (t
) = 1;
4045 /* Allocate a TYPE_CODE_BOOL type structure associated with GDBARCH.
4046 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
4047 the type's TYPE_UNSIGNED flag. NAME is the type name. */
4050 arch_boolean_type (struct gdbarch
*gdbarch
,
4051 int bit
, int unsigned_p
, char *name
)
4055 t
= arch_type (gdbarch
, TYPE_CODE_BOOL
, bit
/ TARGET_CHAR_BIT
, name
);
4057 TYPE_UNSIGNED (t
) = 1;
4062 /* Allocate a TYPE_CODE_FLT type structure associated with GDBARCH.
4063 BIT is the type size in bits; if BIT equals -1, the size is
4064 determined by the floatformat. NAME is the type name. Set the
4065 TYPE_FLOATFORMAT from FLOATFORMATS. */
4068 arch_float_type (struct gdbarch
*gdbarch
,
4069 int bit
, char *name
, const struct floatformat
**floatformats
)
4075 gdb_assert (floatformats
!= NULL
);
4076 gdb_assert (floatformats
[0] != NULL
&& floatformats
[1] != NULL
);
4077 bit
= floatformats
[0]->totalsize
;
4079 gdb_assert (bit
>= 0);
4081 t
= arch_type (gdbarch
, TYPE_CODE_FLT
, bit
/ TARGET_CHAR_BIT
, name
);
4082 TYPE_FLOATFORMAT (t
) = floatformats
;
4086 /* Allocate a TYPE_CODE_COMPLEX type structure associated with GDBARCH.
4087 NAME is the type name. TARGET_TYPE is the component float type. */
4090 arch_complex_type (struct gdbarch
*gdbarch
,
4091 char *name
, struct type
*target_type
)
4095 t
= arch_type (gdbarch
, TYPE_CODE_COMPLEX
,
4096 2 * TYPE_LENGTH (target_type
), name
);
4097 TYPE_TARGET_TYPE (t
) = target_type
;
4101 /* Allocate a TYPE_CODE_FLAGS type structure associated with GDBARCH.
4102 NAME is the type name. LENGTH is the size of the flag word in bytes. */
4105 arch_flags_type (struct gdbarch
*gdbarch
, char *name
, int length
)
4107 int nfields
= length
* TARGET_CHAR_BIT
;
4110 type
= arch_type (gdbarch
, TYPE_CODE_FLAGS
, length
, name
);
4111 TYPE_UNSIGNED (type
) = 1;
4112 TYPE_NFIELDS (type
) = nfields
;
4113 TYPE_FIELDS (type
) = TYPE_ZALLOC (type
, nfields
* sizeof (struct field
));
4118 /* Add field to TYPE_CODE_FLAGS type TYPE to indicate the bit at
4119 position BITPOS is called NAME. */
4122 append_flags_type_flag (struct type
*type
, int bitpos
, char *name
)
4124 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_FLAGS
);
4125 gdb_assert (bitpos
< TYPE_NFIELDS (type
));
4126 gdb_assert (bitpos
>= 0);
4130 TYPE_FIELD_NAME (type
, bitpos
) = xstrdup (name
);
4131 SET_FIELD_BITPOS (TYPE_FIELD (type
, bitpos
), bitpos
);
4135 /* Don't show this field to the user. */
4136 SET_FIELD_BITPOS (TYPE_FIELD (type
, bitpos
), -1);
4140 /* Allocate a TYPE_CODE_STRUCT or TYPE_CODE_UNION type structure (as
4141 specified by CODE) associated with GDBARCH. NAME is the type name. */
4144 arch_composite_type (struct gdbarch
*gdbarch
, char *name
, enum type_code code
)
4148 gdb_assert (code
== TYPE_CODE_STRUCT
|| code
== TYPE_CODE_UNION
);
4149 t
= arch_type (gdbarch
, code
, 0, NULL
);
4150 TYPE_TAG_NAME (t
) = name
;
4151 INIT_CPLUS_SPECIFIC (t
);
4155 /* Add new field with name NAME and type FIELD to composite type T.
4156 Do not set the field's position or adjust the type's length;
4157 the caller should do so. Return the new field. */
4160 append_composite_type_field_raw (struct type
*t
, char *name
,
4165 TYPE_NFIELDS (t
) = TYPE_NFIELDS (t
) + 1;
4166 TYPE_FIELDS (t
) = xrealloc (TYPE_FIELDS (t
),
4167 sizeof (struct field
) * TYPE_NFIELDS (t
));
4168 f
= &(TYPE_FIELDS (t
)[TYPE_NFIELDS (t
) - 1]);
4169 memset (f
, 0, sizeof f
[0]);
4170 FIELD_TYPE (f
[0]) = field
;
4171 FIELD_NAME (f
[0]) = name
;
4175 /* Add new field with name NAME and type FIELD to composite type T.
4176 ALIGNMENT (if non-zero) specifies the minimum field alignment. */
4179 append_composite_type_field_aligned (struct type
*t
, char *name
,
4180 struct type
*field
, int alignment
)
4182 struct field
*f
= append_composite_type_field_raw (t
, name
, field
);
4184 if (TYPE_CODE (t
) == TYPE_CODE_UNION
)
4186 if (TYPE_LENGTH (t
) < TYPE_LENGTH (field
))
4187 TYPE_LENGTH (t
) = TYPE_LENGTH (field
);
4189 else if (TYPE_CODE (t
) == TYPE_CODE_STRUCT
)
4191 TYPE_LENGTH (t
) = TYPE_LENGTH (t
) + TYPE_LENGTH (field
);
4192 if (TYPE_NFIELDS (t
) > 1)
4194 SET_FIELD_BITPOS (f
[0],
4195 (FIELD_BITPOS (f
[-1])
4196 + (TYPE_LENGTH (FIELD_TYPE (f
[-1]))
4197 * TARGET_CHAR_BIT
)));
4203 alignment
*= TARGET_CHAR_BIT
;
4204 left
= FIELD_BITPOS (f
[0]) % alignment
;
4208 SET_FIELD_BITPOS (f
[0], FIELD_BITPOS (f
[0]) + (alignment
- left
));
4209 TYPE_LENGTH (t
) += (alignment
- left
) / TARGET_CHAR_BIT
;
4216 /* Add new field with name NAME and type FIELD to composite type T. */
4219 append_composite_type_field (struct type
*t
, char *name
,
4222 append_composite_type_field_aligned (t
, name
, field
, 0);
4225 static struct gdbarch_data
*gdbtypes_data
;
4227 const struct builtin_type
*
4228 builtin_type (struct gdbarch
*gdbarch
)
4230 return gdbarch_data (gdbarch
, gdbtypes_data
);
4234 gdbtypes_post_init (struct gdbarch
*gdbarch
)
4236 struct builtin_type
*builtin_type
4237 = GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct builtin_type
);
4240 builtin_type
->builtin_void
4241 = arch_type (gdbarch
, TYPE_CODE_VOID
, 1, "void");
4242 builtin_type
->builtin_char
4243 = arch_integer_type (gdbarch
, TARGET_CHAR_BIT
,
4244 !gdbarch_char_signed (gdbarch
), "char");
4245 builtin_type
->builtin_signed_char
4246 = arch_integer_type (gdbarch
, TARGET_CHAR_BIT
,
4248 builtin_type
->builtin_unsigned_char
4249 = arch_integer_type (gdbarch
, TARGET_CHAR_BIT
,
4250 1, "unsigned char");
4251 builtin_type
->builtin_short
4252 = arch_integer_type (gdbarch
, gdbarch_short_bit (gdbarch
),
4254 builtin_type
->builtin_unsigned_short
4255 = arch_integer_type (gdbarch
, gdbarch_short_bit (gdbarch
),
4256 1, "unsigned short");
4257 builtin_type
->builtin_int
4258 = arch_integer_type (gdbarch
, gdbarch_int_bit (gdbarch
),
4260 builtin_type
->builtin_unsigned_int
4261 = arch_integer_type (gdbarch
, gdbarch_int_bit (gdbarch
),
4263 builtin_type
->builtin_long
4264 = arch_integer_type (gdbarch
, gdbarch_long_bit (gdbarch
),
4266 builtin_type
->builtin_unsigned_long
4267 = arch_integer_type (gdbarch
, gdbarch_long_bit (gdbarch
),
4268 1, "unsigned long");
4269 builtin_type
->builtin_long_long
4270 = arch_integer_type (gdbarch
, gdbarch_long_long_bit (gdbarch
),
4272 builtin_type
->builtin_unsigned_long_long
4273 = arch_integer_type (gdbarch
, gdbarch_long_long_bit (gdbarch
),
4274 1, "unsigned long long");
4275 builtin_type
->builtin_float
4276 = arch_float_type (gdbarch
, gdbarch_float_bit (gdbarch
),
4277 "float", gdbarch_float_format (gdbarch
));
4278 builtin_type
->builtin_double
4279 = arch_float_type (gdbarch
, gdbarch_double_bit (gdbarch
),
4280 "double", gdbarch_double_format (gdbarch
));
4281 builtin_type
->builtin_long_double
4282 = arch_float_type (gdbarch
, gdbarch_long_double_bit (gdbarch
),
4283 "long double", gdbarch_long_double_format (gdbarch
));
4284 builtin_type
->builtin_complex
4285 = arch_complex_type (gdbarch
, "complex",
4286 builtin_type
->builtin_float
);
4287 builtin_type
->builtin_double_complex
4288 = arch_complex_type (gdbarch
, "double complex",
4289 builtin_type
->builtin_double
);
4290 builtin_type
->builtin_string
4291 = arch_type (gdbarch
, TYPE_CODE_STRING
, 1, "string");
4292 builtin_type
->builtin_bool
4293 = arch_type (gdbarch
, TYPE_CODE_BOOL
, 1, "bool");
4295 /* The following three are about decimal floating point types, which
4296 are 32-bits, 64-bits and 128-bits respectively. */
4297 builtin_type
->builtin_decfloat
4298 = arch_type (gdbarch
, TYPE_CODE_DECFLOAT
, 32 / 8, "_Decimal32");
4299 builtin_type
->builtin_decdouble
4300 = arch_type (gdbarch
, TYPE_CODE_DECFLOAT
, 64 / 8, "_Decimal64");
4301 builtin_type
->builtin_declong
4302 = arch_type (gdbarch
, TYPE_CODE_DECFLOAT
, 128 / 8, "_Decimal128");
4304 /* "True" character types. */
4305 builtin_type
->builtin_true_char
4306 = arch_character_type (gdbarch
, TARGET_CHAR_BIT
, 0, "true character");
4307 builtin_type
->builtin_true_unsigned_char
4308 = arch_character_type (gdbarch
, TARGET_CHAR_BIT
, 1, "true character");
4310 /* Fixed-size integer types. */
4311 builtin_type
->builtin_int0
4312 = arch_integer_type (gdbarch
, 0, 0, "int0_t");
4313 builtin_type
->builtin_int8
4314 = arch_integer_type (gdbarch
, 8, 0, "int8_t");
4315 builtin_type
->builtin_uint8
4316 = arch_integer_type (gdbarch
, 8, 1, "uint8_t");
4317 builtin_type
->builtin_int16
4318 = arch_integer_type (gdbarch
, 16, 0, "int16_t");
4319 builtin_type
->builtin_uint16
4320 = arch_integer_type (gdbarch
, 16, 1, "uint16_t");
4321 builtin_type
->builtin_int32
4322 = arch_integer_type (gdbarch
, 32, 0, "int32_t");
4323 builtin_type
->builtin_uint32
4324 = arch_integer_type (gdbarch
, 32, 1, "uint32_t");
4325 builtin_type
->builtin_int64
4326 = arch_integer_type (gdbarch
, 64, 0, "int64_t");
4327 builtin_type
->builtin_uint64
4328 = arch_integer_type (gdbarch
, 64, 1, "uint64_t");
4329 builtin_type
->builtin_int128
4330 = arch_integer_type (gdbarch
, 128, 0, "int128_t");
4331 builtin_type
->builtin_uint128
4332 = arch_integer_type (gdbarch
, 128, 1, "uint128_t");
4333 TYPE_INSTANCE_FLAGS (builtin_type
->builtin_int8
) |=
4334 TYPE_INSTANCE_FLAG_NOTTEXT
;
4335 TYPE_INSTANCE_FLAGS (builtin_type
->builtin_uint8
) |=
4336 TYPE_INSTANCE_FLAG_NOTTEXT
;
4338 /* Wide character types. */
4339 builtin_type
->builtin_char16
4340 = arch_integer_type (gdbarch
, 16, 0, "char16_t");
4341 builtin_type
->builtin_char32
4342 = arch_integer_type (gdbarch
, 32, 0, "char32_t");
4345 /* Default data/code pointer types. */
4346 builtin_type
->builtin_data_ptr
4347 = lookup_pointer_type (builtin_type
->builtin_void
);
4348 builtin_type
->builtin_func_ptr
4349 = lookup_pointer_type (lookup_function_type (builtin_type
->builtin_void
));
4350 builtin_type
->builtin_func_func
4351 = lookup_function_type (builtin_type
->builtin_func_ptr
);
4353 /* This type represents a GDB internal function. */
4354 builtin_type
->internal_fn
4355 = arch_type (gdbarch
, TYPE_CODE_INTERNAL_FUNCTION
, 0,
4356 "<internal function>");
4358 return builtin_type
;
4361 /* This set of objfile-based types is intended to be used by symbol
4362 readers as basic types. */
4364 static const struct objfile_data
*objfile_type_data
;
4366 const struct objfile_type
*
4367 objfile_type (struct objfile
*objfile
)
4369 struct gdbarch
*gdbarch
;
4370 struct objfile_type
*objfile_type
4371 = objfile_data (objfile
, objfile_type_data
);
4374 return objfile_type
;
4376 objfile_type
= OBSTACK_CALLOC (&objfile
->objfile_obstack
,
4377 1, struct objfile_type
);
4379 /* Use the objfile architecture to determine basic type properties. */
4380 gdbarch
= get_objfile_arch (objfile
);
4383 objfile_type
->builtin_void
4384 = init_type (TYPE_CODE_VOID
, 1,
4388 objfile_type
->builtin_char
4389 = init_type (TYPE_CODE_INT
, TARGET_CHAR_BIT
/ TARGET_CHAR_BIT
,
4391 | (gdbarch_char_signed (gdbarch
) ? 0 : TYPE_FLAG_UNSIGNED
)),
4393 objfile_type
->builtin_signed_char
4394 = init_type (TYPE_CODE_INT
, TARGET_CHAR_BIT
/ TARGET_CHAR_BIT
,
4396 "signed char", objfile
);
4397 objfile_type
->builtin_unsigned_char
4398 = init_type (TYPE_CODE_INT
, TARGET_CHAR_BIT
/ TARGET_CHAR_BIT
,
4400 "unsigned char", objfile
);
4401 objfile_type
->builtin_short
4402 = init_type (TYPE_CODE_INT
,
4403 gdbarch_short_bit (gdbarch
) / TARGET_CHAR_BIT
,
4404 0, "short", objfile
);
4405 objfile_type
->builtin_unsigned_short
4406 = init_type (TYPE_CODE_INT
,
4407 gdbarch_short_bit (gdbarch
) / TARGET_CHAR_BIT
,
4408 TYPE_FLAG_UNSIGNED
, "unsigned short", objfile
);
4409 objfile_type
->builtin_int
4410 = init_type (TYPE_CODE_INT
,
4411 gdbarch_int_bit (gdbarch
) / TARGET_CHAR_BIT
,
4413 objfile_type
->builtin_unsigned_int
4414 = init_type (TYPE_CODE_INT
,
4415 gdbarch_int_bit (gdbarch
) / TARGET_CHAR_BIT
,
4416 TYPE_FLAG_UNSIGNED
, "unsigned int", objfile
);
4417 objfile_type
->builtin_long
4418 = init_type (TYPE_CODE_INT
,
4419 gdbarch_long_bit (gdbarch
) / TARGET_CHAR_BIT
,
4420 0, "long", objfile
);
4421 objfile_type
->builtin_unsigned_long
4422 = init_type (TYPE_CODE_INT
,
4423 gdbarch_long_bit (gdbarch
) / TARGET_CHAR_BIT
,
4424 TYPE_FLAG_UNSIGNED
, "unsigned long", objfile
);
4425 objfile_type
->builtin_long_long
4426 = init_type (TYPE_CODE_INT
,
4427 gdbarch_long_long_bit (gdbarch
) / TARGET_CHAR_BIT
,
4428 0, "long long", objfile
);
4429 objfile_type
->builtin_unsigned_long_long
4430 = init_type (TYPE_CODE_INT
,
4431 gdbarch_long_long_bit (gdbarch
) / TARGET_CHAR_BIT
,
4432 TYPE_FLAG_UNSIGNED
, "unsigned long long", objfile
);
4434 objfile_type
->builtin_float
4435 = init_type (TYPE_CODE_FLT
,
4436 gdbarch_float_bit (gdbarch
) / TARGET_CHAR_BIT
,
4437 0, "float", objfile
);
4438 TYPE_FLOATFORMAT (objfile_type
->builtin_float
)
4439 = gdbarch_float_format (gdbarch
);
4440 objfile_type
->builtin_double
4441 = init_type (TYPE_CODE_FLT
,
4442 gdbarch_double_bit (gdbarch
) / TARGET_CHAR_BIT
,
4443 0, "double", objfile
);
4444 TYPE_FLOATFORMAT (objfile_type
->builtin_double
)
4445 = gdbarch_double_format (gdbarch
);
4446 objfile_type
->builtin_long_double
4447 = init_type (TYPE_CODE_FLT
,
4448 gdbarch_long_double_bit (gdbarch
) / TARGET_CHAR_BIT
,
4449 0, "long double", objfile
);
4450 TYPE_FLOATFORMAT (objfile_type
->builtin_long_double
)
4451 = gdbarch_long_double_format (gdbarch
);
4453 /* This type represents a type that was unrecognized in symbol read-in. */
4454 objfile_type
->builtin_error
4455 = init_type (TYPE_CODE_ERROR
, 0, 0, "<unknown type>", objfile
);
4457 /* The following set of types is used for symbols with no
4458 debug information. */
4459 objfile_type
->nodebug_text_symbol
4460 = init_type (TYPE_CODE_FUNC
, 1, 0,
4461 "<text variable, no debug info>", objfile
);
4462 TYPE_TARGET_TYPE (objfile_type
->nodebug_text_symbol
)
4463 = objfile_type
->builtin_int
;
4464 objfile_type
->nodebug_text_gnu_ifunc_symbol
4465 = init_type (TYPE_CODE_FUNC
, 1, TYPE_FLAG_GNU_IFUNC
,
4466 "<text gnu-indirect-function variable, no debug info>",
4468 TYPE_TARGET_TYPE (objfile_type
->nodebug_text_gnu_ifunc_symbol
)
4469 = objfile_type
->nodebug_text_symbol
;
4470 objfile_type
->nodebug_got_plt_symbol
4471 = init_type (TYPE_CODE_PTR
, gdbarch_addr_bit (gdbarch
) / 8, 0,
4472 "<text from jump slot in .got.plt, no debug info>",
4474 TYPE_TARGET_TYPE (objfile_type
->nodebug_got_plt_symbol
)
4475 = objfile_type
->nodebug_text_symbol
;
4476 objfile_type
->nodebug_data_symbol
4477 = init_type (TYPE_CODE_INT
,
4478 gdbarch_int_bit (gdbarch
) / HOST_CHAR_BIT
, 0,
4479 "<data variable, no debug info>", objfile
);
4480 objfile_type
->nodebug_unknown_symbol
4481 = init_type (TYPE_CODE_INT
, 1, 0,
4482 "<variable (not text or data), no debug info>", objfile
);
4483 objfile_type
->nodebug_tls_symbol
4484 = init_type (TYPE_CODE_INT
,
4485 gdbarch_int_bit (gdbarch
) / HOST_CHAR_BIT
, 0,
4486 "<thread local variable, no debug info>", objfile
);
4488 /* NOTE: on some targets, addresses and pointers are not necessarily
4492 - gdb's `struct type' always describes the target's
4494 - gdb's `struct value' objects should always hold values in
4496 - gdb's CORE_ADDR values are addresses in the unified virtual
4497 address space that the assembler and linker work with. Thus,
4498 since target_read_memory takes a CORE_ADDR as an argument, it
4499 can access any memory on the target, even if the processor has
4500 separate code and data address spaces.
4502 In this context, objfile_type->builtin_core_addr is a bit odd:
4503 it's a target type for a value the target will never see. It's
4504 only used to hold the values of (typeless) linker symbols, which
4505 are indeed in the unified virtual address space. */
4507 objfile_type
->builtin_core_addr
4508 = init_type (TYPE_CODE_INT
,
4509 gdbarch_addr_bit (gdbarch
) / 8,
4510 TYPE_FLAG_UNSIGNED
, "__CORE_ADDR", objfile
);
4512 set_objfile_data (objfile
, objfile_type_data
, objfile_type
);
4513 return objfile_type
;
4516 extern initialize_file_ftype _initialize_gdbtypes
;
4519 _initialize_gdbtypes (void)
4521 gdbtypes_data
= gdbarch_data_register_post_init (gdbtypes_post_init
);
4522 objfile_type_data
= register_objfile_data ();
4524 add_setshow_zuinteger_cmd ("overload", no_class
, &overload_debug
,
4525 _("Set debugging of C++ overloading."),
4526 _("Show debugging of C++ overloading."),
4527 _("When enabled, ranking of the "
4528 "functions is displayed."),
4530 show_overload_debug
,
4531 &setdebuglist
, &showdebuglist
);
4533 /* Add user knob for controlling resolution of opaque types. */
4534 add_setshow_boolean_cmd ("opaque-type-resolution", class_support
,
4535 &opaque_type_resolution
,
4536 _("Set resolution of opaque struct/class/union"
4537 " types (if set before loading symbols)."),
4538 _("Show resolution of opaque struct/class/union"
4539 " types (if set before loading symbols)."),
4541 show_opaque_type_resolution
,
4542 &setlist
, &showlist
);
4544 /* Add an option to permit non-strict type checking. */
4545 add_setshow_boolean_cmd ("type", class_support
,
4546 &strict_type_checking
,
4547 _("Set strict type checking."),
4548 _("Show strict type checking."),
4550 show_strict_type_checking
,
4551 &setchecklist
, &showchecklist
);