1 /* Support routines for manipulating internal types for GDB.
3 Copyright (C) 1992-2019 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/>. */
28 #include "expression.h"
33 #include "complaints.h"
37 #include "cp-support.h"
39 #include "dwarf2loc.h"
41 #include "floatformat.h"
43 /* Initialize BADNESS constants. */
45 const struct rank LENGTH_MISMATCH_BADNESS
= {100,0};
47 const struct rank TOO_FEW_PARAMS_BADNESS
= {100,0};
48 const struct rank INCOMPATIBLE_TYPE_BADNESS
= {100,0};
50 const struct rank EXACT_MATCH_BADNESS
= {0,0};
52 const struct rank INTEGER_PROMOTION_BADNESS
= {1,0};
53 const struct rank FLOAT_PROMOTION_BADNESS
= {1,0};
54 const struct rank BASE_PTR_CONVERSION_BADNESS
= {1,0};
55 const struct rank CV_CONVERSION_BADNESS
= {1, 0};
56 const struct rank INTEGER_CONVERSION_BADNESS
= {2,0};
57 const struct rank FLOAT_CONVERSION_BADNESS
= {2,0};
58 const struct rank INT_FLOAT_CONVERSION_BADNESS
= {2,0};
59 const struct rank VOID_PTR_CONVERSION_BADNESS
= {2,0};
60 const struct rank BOOL_CONVERSION_BADNESS
= {3,0};
61 const struct rank BASE_CONVERSION_BADNESS
= {2,0};
62 const struct rank REFERENCE_CONVERSION_BADNESS
= {2,0};
63 const struct rank NULL_POINTER_CONVERSION_BADNESS
= {2,0};
64 const struct rank NS_POINTER_CONVERSION_BADNESS
= {10,0};
65 const struct rank NS_INTEGER_POINTER_CONVERSION_BADNESS
= {3,0};
67 /* Floatformat pairs. */
68 const struct floatformat
*floatformats_ieee_half
[BFD_ENDIAN_UNKNOWN
] = {
69 &floatformat_ieee_half_big
,
70 &floatformat_ieee_half_little
72 const struct floatformat
*floatformats_ieee_single
[BFD_ENDIAN_UNKNOWN
] = {
73 &floatformat_ieee_single_big
,
74 &floatformat_ieee_single_little
76 const struct floatformat
*floatformats_ieee_double
[BFD_ENDIAN_UNKNOWN
] = {
77 &floatformat_ieee_double_big
,
78 &floatformat_ieee_double_little
80 const struct floatformat
*floatformats_ieee_double_littlebyte_bigword
[BFD_ENDIAN_UNKNOWN
] = {
81 &floatformat_ieee_double_big
,
82 &floatformat_ieee_double_littlebyte_bigword
84 const struct floatformat
*floatformats_i387_ext
[BFD_ENDIAN_UNKNOWN
] = {
85 &floatformat_i387_ext
,
88 const struct floatformat
*floatformats_m68881_ext
[BFD_ENDIAN_UNKNOWN
] = {
89 &floatformat_m68881_ext
,
90 &floatformat_m68881_ext
92 const struct floatformat
*floatformats_arm_ext
[BFD_ENDIAN_UNKNOWN
] = {
93 &floatformat_arm_ext_big
,
94 &floatformat_arm_ext_littlebyte_bigword
96 const struct floatformat
*floatformats_ia64_spill
[BFD_ENDIAN_UNKNOWN
] = {
97 &floatformat_ia64_spill_big
,
98 &floatformat_ia64_spill_little
100 const struct floatformat
*floatformats_ia64_quad
[BFD_ENDIAN_UNKNOWN
] = {
101 &floatformat_ia64_quad_big
,
102 &floatformat_ia64_quad_little
104 const struct floatformat
*floatformats_vax_f
[BFD_ENDIAN_UNKNOWN
] = {
108 const struct floatformat
*floatformats_vax_d
[BFD_ENDIAN_UNKNOWN
] = {
112 const struct floatformat
*floatformats_ibm_long_double
[BFD_ENDIAN_UNKNOWN
] = {
113 &floatformat_ibm_long_double_big
,
114 &floatformat_ibm_long_double_little
117 /* Should opaque types be resolved? */
119 static bool opaque_type_resolution
= true;
121 /* See gdbtypes.h. */
123 unsigned int overload_debug
= 0;
125 /* A flag to enable strict type checking. */
127 static bool strict_type_checking
= true;
129 /* A function to show whether opaque types are resolved. */
132 show_opaque_type_resolution (struct ui_file
*file
, int from_tty
,
133 struct cmd_list_element
*c
,
136 fprintf_filtered (file
, _("Resolution of opaque struct/class/union types "
137 "(if set before loading symbols) is %s.\n"),
141 /* A function to show whether C++ overload debugging is enabled. */
144 show_overload_debug (struct ui_file
*file
, int from_tty
,
145 struct cmd_list_element
*c
, const char *value
)
147 fprintf_filtered (file
, _("Debugging of C++ overloading is %s.\n"),
151 /* A function to show the status of strict type checking. */
154 show_strict_type_checking (struct ui_file
*file
, int from_tty
,
155 struct cmd_list_element
*c
, const char *value
)
157 fprintf_filtered (file
, _("Strict type checking is %s.\n"), value
);
161 /* Allocate a new OBJFILE-associated type structure and fill it
162 with some defaults. Space for the type structure is allocated
163 on the objfile's objfile_obstack. */
166 alloc_type (struct objfile
*objfile
)
170 gdb_assert (objfile
!= NULL
);
172 /* Alloc the structure and start off with all fields zeroed. */
173 type
= OBSTACK_ZALLOC (&objfile
->objfile_obstack
, struct type
);
174 TYPE_MAIN_TYPE (type
) = OBSTACK_ZALLOC (&objfile
->objfile_obstack
,
176 OBJSTAT (objfile
, n_types
++);
178 TYPE_OBJFILE_OWNED (type
) = 1;
179 TYPE_OWNER (type
).objfile
= objfile
;
181 /* Initialize the fields that might not be zero. */
183 TYPE_CODE (type
) = TYPE_CODE_UNDEF
;
184 TYPE_CHAIN (type
) = type
; /* Chain back to itself. */
189 /* Allocate a new GDBARCH-associated type structure and fill it
190 with some defaults. Space for the type structure is allocated
191 on the obstack associated with GDBARCH. */
194 alloc_type_arch (struct gdbarch
*gdbarch
)
198 gdb_assert (gdbarch
!= NULL
);
200 /* Alloc the structure and start off with all fields zeroed. */
202 type
= GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct type
);
203 TYPE_MAIN_TYPE (type
) = GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct main_type
);
205 TYPE_OBJFILE_OWNED (type
) = 0;
206 TYPE_OWNER (type
).gdbarch
= gdbarch
;
208 /* Initialize the fields that might not be zero. */
210 TYPE_CODE (type
) = TYPE_CODE_UNDEF
;
211 TYPE_CHAIN (type
) = type
; /* Chain back to itself. */
216 /* If TYPE is objfile-associated, allocate a new type structure
217 associated with the same objfile. If TYPE is gdbarch-associated,
218 allocate a new type structure associated with the same gdbarch. */
221 alloc_type_copy (const struct type
*type
)
223 if (TYPE_OBJFILE_OWNED (type
))
224 return alloc_type (TYPE_OWNER (type
).objfile
);
226 return alloc_type_arch (TYPE_OWNER (type
).gdbarch
);
229 /* If TYPE is gdbarch-associated, return that architecture.
230 If TYPE is objfile-associated, return that objfile's architecture. */
233 get_type_arch (const struct type
*type
)
235 struct gdbarch
*arch
;
237 if (TYPE_OBJFILE_OWNED (type
))
238 arch
= get_objfile_arch (TYPE_OWNER (type
).objfile
);
240 arch
= TYPE_OWNER (type
).gdbarch
;
242 /* The ARCH can be NULL if TYPE is associated with neither an objfile nor
243 a gdbarch, however, this is very rare, and even then, in most cases
244 that get_type_arch is called, we assume that a non-NULL value is
246 gdb_assert (arch
!= NULL
);
250 /* See gdbtypes.h. */
253 get_target_type (struct type
*type
)
257 type
= TYPE_TARGET_TYPE (type
);
259 type
= check_typedef (type
);
265 /* See gdbtypes.h. */
268 type_length_units (struct type
*type
)
270 struct gdbarch
*arch
= get_type_arch (type
);
271 int unit_size
= gdbarch_addressable_memory_unit_size (arch
);
273 return TYPE_LENGTH (type
) / unit_size
;
276 /* Alloc a new type instance structure, fill it with some defaults,
277 and point it at OLDTYPE. Allocate the new type instance from the
278 same place as OLDTYPE. */
281 alloc_type_instance (struct type
*oldtype
)
285 /* Allocate the structure. */
287 if (! TYPE_OBJFILE_OWNED (oldtype
))
288 type
= GDBARCH_OBSTACK_ZALLOC (get_type_arch (oldtype
), struct type
);
290 type
= OBSTACK_ZALLOC (&TYPE_OBJFILE (oldtype
)->objfile_obstack
,
293 TYPE_MAIN_TYPE (type
) = TYPE_MAIN_TYPE (oldtype
);
295 TYPE_CHAIN (type
) = type
; /* Chain back to itself for now. */
300 /* Clear all remnants of the previous type at TYPE, in preparation for
301 replacing it with something else. Preserve owner information. */
304 smash_type (struct type
*type
)
306 int objfile_owned
= TYPE_OBJFILE_OWNED (type
);
307 union type_owner owner
= TYPE_OWNER (type
);
309 memset (TYPE_MAIN_TYPE (type
), 0, sizeof (struct main_type
));
311 /* Restore owner information. */
312 TYPE_OBJFILE_OWNED (type
) = objfile_owned
;
313 TYPE_OWNER (type
) = owner
;
315 /* For now, delete the rings. */
316 TYPE_CHAIN (type
) = type
;
318 /* For now, leave the pointer/reference types alone. */
321 /* Lookup a pointer to a type TYPE. TYPEPTR, if nonzero, points
322 to a pointer to memory where the pointer type should be stored.
323 If *TYPEPTR is zero, update it to point to the pointer type we return.
324 We allocate new memory if needed. */
327 make_pointer_type (struct type
*type
, struct type
**typeptr
)
329 struct type
*ntype
; /* New type */
332 ntype
= TYPE_POINTER_TYPE (type
);
337 return ntype
; /* Don't care about alloc,
338 and have new type. */
339 else if (*typeptr
== 0)
341 *typeptr
= ntype
; /* Tracking alloc, and have new type. */
346 if (typeptr
== 0 || *typeptr
== 0) /* We'll need to allocate one. */
348 ntype
= alloc_type_copy (type
);
352 else /* We have storage, but need to reset it. */
355 chain
= TYPE_CHAIN (ntype
);
357 TYPE_CHAIN (ntype
) = chain
;
360 TYPE_TARGET_TYPE (ntype
) = type
;
361 TYPE_POINTER_TYPE (type
) = ntype
;
363 /* FIXME! Assumes the machine has only one representation for pointers! */
366 = gdbarch_ptr_bit (get_type_arch (type
)) / TARGET_CHAR_BIT
;
367 TYPE_CODE (ntype
) = TYPE_CODE_PTR
;
369 /* Mark pointers as unsigned. The target converts between pointers
370 and addresses (CORE_ADDRs) using gdbarch_pointer_to_address and
371 gdbarch_address_to_pointer. */
372 TYPE_UNSIGNED (ntype
) = 1;
374 /* Update the length of all the other variants of this type. */
375 chain
= TYPE_CHAIN (ntype
);
376 while (chain
!= ntype
)
378 TYPE_LENGTH (chain
) = TYPE_LENGTH (ntype
);
379 chain
= TYPE_CHAIN (chain
);
385 /* Given a type TYPE, return a type of pointers to that type.
386 May need to construct such a type if this is the first use. */
389 lookup_pointer_type (struct type
*type
)
391 return make_pointer_type (type
, (struct type
**) 0);
394 /* Lookup a C++ `reference' to a type TYPE. TYPEPTR, if nonzero,
395 points to a pointer to memory where the reference type should be
396 stored. If *TYPEPTR is zero, update it to point to the reference
397 type we return. We allocate new memory if needed. REFCODE denotes
398 the kind of reference type to lookup (lvalue or rvalue reference). */
401 make_reference_type (struct type
*type
, struct type
**typeptr
,
402 enum type_code refcode
)
404 struct type
*ntype
; /* New type */
405 struct type
**reftype
;
408 gdb_assert (refcode
== TYPE_CODE_REF
|| refcode
== TYPE_CODE_RVALUE_REF
);
410 ntype
= (refcode
== TYPE_CODE_REF
? TYPE_REFERENCE_TYPE (type
)
411 : TYPE_RVALUE_REFERENCE_TYPE (type
));
416 return ntype
; /* Don't care about alloc,
417 and have new type. */
418 else if (*typeptr
== 0)
420 *typeptr
= ntype
; /* Tracking alloc, and have new type. */
425 if (typeptr
== 0 || *typeptr
== 0) /* We'll need to allocate one. */
427 ntype
= alloc_type_copy (type
);
431 else /* We have storage, but need to reset it. */
434 chain
= TYPE_CHAIN (ntype
);
436 TYPE_CHAIN (ntype
) = chain
;
439 TYPE_TARGET_TYPE (ntype
) = type
;
440 reftype
= (refcode
== TYPE_CODE_REF
? &TYPE_REFERENCE_TYPE (type
)
441 : &TYPE_RVALUE_REFERENCE_TYPE (type
));
445 /* FIXME! Assume the machine has only one representation for
446 references, and that it matches the (only) representation for
449 TYPE_LENGTH (ntype
) =
450 gdbarch_ptr_bit (get_type_arch (type
)) / TARGET_CHAR_BIT
;
451 TYPE_CODE (ntype
) = refcode
;
455 /* Update the length of all the other variants of this type. */
456 chain
= TYPE_CHAIN (ntype
);
457 while (chain
!= ntype
)
459 TYPE_LENGTH (chain
) = TYPE_LENGTH (ntype
);
460 chain
= TYPE_CHAIN (chain
);
466 /* Same as above, but caller doesn't care about memory allocation
470 lookup_reference_type (struct type
*type
, enum type_code refcode
)
472 return make_reference_type (type
, (struct type
**) 0, refcode
);
475 /* Lookup the lvalue reference type for the type TYPE. */
478 lookup_lvalue_reference_type (struct type
*type
)
480 return lookup_reference_type (type
, TYPE_CODE_REF
);
483 /* Lookup the rvalue reference type for the type TYPE. */
486 lookup_rvalue_reference_type (struct type
*type
)
488 return lookup_reference_type (type
, TYPE_CODE_RVALUE_REF
);
491 /* Lookup a function type that returns type TYPE. TYPEPTR, if
492 nonzero, points to a pointer to memory where the function type
493 should be stored. If *TYPEPTR is zero, update it to point to the
494 function type we return. We allocate new memory if needed. */
497 make_function_type (struct type
*type
, struct type
**typeptr
)
499 struct type
*ntype
; /* New type */
501 if (typeptr
== 0 || *typeptr
== 0) /* We'll need to allocate one. */
503 ntype
= alloc_type_copy (type
);
507 else /* We have storage, but need to reset it. */
513 TYPE_TARGET_TYPE (ntype
) = type
;
515 TYPE_LENGTH (ntype
) = 1;
516 TYPE_CODE (ntype
) = TYPE_CODE_FUNC
;
518 INIT_FUNC_SPECIFIC (ntype
);
523 /* Given a type TYPE, return a type of functions that return that type.
524 May need to construct such a type if this is the first use. */
527 lookup_function_type (struct type
*type
)
529 return make_function_type (type
, (struct type
**) 0);
532 /* Given a type TYPE and argument types, return the appropriate
533 function type. If the final type in PARAM_TYPES is NULL, make a
537 lookup_function_type_with_arguments (struct type
*type
,
539 struct type
**param_types
)
541 struct type
*fn
= make_function_type (type
, (struct type
**) 0);
546 if (param_types
[nparams
- 1] == NULL
)
549 TYPE_VARARGS (fn
) = 1;
551 else if (TYPE_CODE (check_typedef (param_types
[nparams
- 1]))
555 /* Caller should have ensured this. */
556 gdb_assert (nparams
== 0);
557 TYPE_PROTOTYPED (fn
) = 1;
560 TYPE_PROTOTYPED (fn
) = 1;
563 TYPE_NFIELDS (fn
) = nparams
;
565 = (struct field
*) TYPE_ZALLOC (fn
, nparams
* sizeof (struct field
));
566 for (i
= 0; i
< nparams
; ++i
)
567 TYPE_FIELD_TYPE (fn
, i
) = param_types
[i
];
572 /* Identify address space identifier by name --
573 return the integer flag defined in gdbtypes.h. */
576 address_space_name_to_int (struct gdbarch
*gdbarch
,
577 const char *space_identifier
)
581 /* Check for known address space delimiters. */
582 if (!strcmp (space_identifier
, "code"))
583 return TYPE_INSTANCE_FLAG_CODE_SPACE
;
584 else if (!strcmp (space_identifier
, "data"))
585 return TYPE_INSTANCE_FLAG_DATA_SPACE
;
586 else if (gdbarch_address_class_name_to_type_flags_p (gdbarch
)
587 && gdbarch_address_class_name_to_type_flags (gdbarch
,
592 error (_("Unknown address space specifier: \"%s\""), space_identifier
);
595 /* Identify address space identifier by integer flag as defined in
596 gdbtypes.h -- return the string version of the adress space name. */
599 address_space_int_to_name (struct gdbarch
*gdbarch
, int space_flag
)
601 if (space_flag
& TYPE_INSTANCE_FLAG_CODE_SPACE
)
603 else if (space_flag
& TYPE_INSTANCE_FLAG_DATA_SPACE
)
605 else if ((space_flag
& TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL
)
606 && gdbarch_address_class_type_flags_to_name_p (gdbarch
))
607 return gdbarch_address_class_type_flags_to_name (gdbarch
, space_flag
);
612 /* Create a new type with instance flags NEW_FLAGS, based on TYPE.
614 If STORAGE is non-NULL, create the new type instance there.
615 STORAGE must be in the same obstack as TYPE. */
618 make_qualified_type (struct type
*type
, int new_flags
,
619 struct type
*storage
)
626 if (TYPE_INSTANCE_FLAGS (ntype
) == new_flags
)
628 ntype
= TYPE_CHAIN (ntype
);
630 while (ntype
!= type
);
632 /* Create a new type instance. */
634 ntype
= alloc_type_instance (type
);
637 /* If STORAGE was provided, it had better be in the same objfile
638 as TYPE. Otherwise, we can't link it into TYPE's cv chain:
639 if one objfile is freed and the other kept, we'd have
640 dangling pointers. */
641 gdb_assert (TYPE_OBJFILE (type
) == TYPE_OBJFILE (storage
));
644 TYPE_MAIN_TYPE (ntype
) = TYPE_MAIN_TYPE (type
);
645 TYPE_CHAIN (ntype
) = ntype
;
648 /* Pointers or references to the original type are not relevant to
650 TYPE_POINTER_TYPE (ntype
) = (struct type
*) 0;
651 TYPE_REFERENCE_TYPE (ntype
) = (struct type
*) 0;
653 /* Chain the new qualified type to the old type. */
654 TYPE_CHAIN (ntype
) = TYPE_CHAIN (type
);
655 TYPE_CHAIN (type
) = ntype
;
657 /* Now set the instance flags and return the new type. */
658 TYPE_INSTANCE_FLAGS (ntype
) = new_flags
;
660 /* Set length of new type to that of the original type. */
661 TYPE_LENGTH (ntype
) = TYPE_LENGTH (type
);
666 /* Make an address-space-delimited variant of a type -- a type that
667 is identical to the one supplied except that it has an address
668 space attribute attached to it (such as "code" or "data").
670 The space attributes "code" and "data" are for Harvard
671 architectures. The address space attributes are for architectures
672 which have alternately sized pointers or pointers with alternate
676 make_type_with_address_space (struct type
*type
, int space_flag
)
678 int new_flags
= ((TYPE_INSTANCE_FLAGS (type
)
679 & ~(TYPE_INSTANCE_FLAG_CODE_SPACE
680 | TYPE_INSTANCE_FLAG_DATA_SPACE
681 | TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL
))
684 return make_qualified_type (type
, new_flags
, NULL
);
687 /* Make a "c-v" variant of a type -- a type that is identical to the
688 one supplied except that it may have const or volatile attributes
689 CNST is a flag for setting the const attribute
690 VOLTL is a flag for setting the volatile attribute
691 TYPE is the base type whose variant we are creating.
693 If TYPEPTR and *TYPEPTR are non-zero, then *TYPEPTR points to
694 storage to hold the new qualified type; *TYPEPTR and TYPE must be
695 in the same objfile. Otherwise, allocate fresh memory for the new
696 type whereever TYPE lives. If TYPEPTR is non-zero, set it to the
697 new type we construct. */
700 make_cv_type (int cnst
, int voltl
,
702 struct type
**typeptr
)
704 struct type
*ntype
; /* New type */
706 int new_flags
= (TYPE_INSTANCE_FLAGS (type
)
707 & ~(TYPE_INSTANCE_FLAG_CONST
708 | TYPE_INSTANCE_FLAG_VOLATILE
));
711 new_flags
|= TYPE_INSTANCE_FLAG_CONST
;
714 new_flags
|= TYPE_INSTANCE_FLAG_VOLATILE
;
716 if (typeptr
&& *typeptr
!= NULL
)
718 /* TYPE and *TYPEPTR must be in the same objfile. We can't have
719 a C-V variant chain that threads across objfiles: if one
720 objfile gets freed, then the other has a broken C-V chain.
722 This code used to try to copy over the main type from TYPE to
723 *TYPEPTR if they were in different objfiles, but that's
724 wrong, too: TYPE may have a field list or member function
725 lists, which refer to types of their own, etc. etc. The
726 whole shebang would need to be copied over recursively; you
727 can't have inter-objfile pointers. The only thing to do is
728 to leave stub types as stub types, and look them up afresh by
729 name each time you encounter them. */
730 gdb_assert (TYPE_OBJFILE (*typeptr
) == TYPE_OBJFILE (type
));
733 ntype
= make_qualified_type (type
, new_flags
,
734 typeptr
? *typeptr
: NULL
);
742 /* Make a 'restrict'-qualified version of TYPE. */
745 make_restrict_type (struct type
*type
)
747 return make_qualified_type (type
,
748 (TYPE_INSTANCE_FLAGS (type
)
749 | TYPE_INSTANCE_FLAG_RESTRICT
),
753 /* Make a type without const, volatile, or restrict. */
756 make_unqualified_type (struct type
*type
)
758 return make_qualified_type (type
,
759 (TYPE_INSTANCE_FLAGS (type
)
760 & ~(TYPE_INSTANCE_FLAG_CONST
761 | TYPE_INSTANCE_FLAG_VOLATILE
762 | TYPE_INSTANCE_FLAG_RESTRICT
)),
766 /* Make a '_Atomic'-qualified version of TYPE. */
769 make_atomic_type (struct type
*type
)
771 return make_qualified_type (type
,
772 (TYPE_INSTANCE_FLAGS (type
)
773 | TYPE_INSTANCE_FLAG_ATOMIC
),
777 /* Replace the contents of ntype with the type *type. This changes the
778 contents, rather than the pointer for TYPE_MAIN_TYPE (ntype); thus
779 the changes are propogated to all types in the TYPE_CHAIN.
781 In order to build recursive types, it's inevitable that we'll need
782 to update types in place --- but this sort of indiscriminate
783 smashing is ugly, and needs to be replaced with something more
784 controlled. TYPE_MAIN_TYPE is a step in this direction; it's not
785 clear if more steps are needed. */
788 replace_type (struct type
*ntype
, struct type
*type
)
792 /* These two types had better be in the same objfile. Otherwise,
793 the assignment of one type's main type structure to the other
794 will produce a type with references to objects (names; field
795 lists; etc.) allocated on an objfile other than its own. */
796 gdb_assert (TYPE_OBJFILE (ntype
) == TYPE_OBJFILE (type
));
798 *TYPE_MAIN_TYPE (ntype
) = *TYPE_MAIN_TYPE (type
);
800 /* The type length is not a part of the main type. Update it for
801 each type on the variant chain. */
805 /* Assert that this element of the chain has no address-class bits
806 set in its flags. Such type variants might have type lengths
807 which are supposed to be different from the non-address-class
808 variants. This assertion shouldn't ever be triggered because
809 symbol readers which do construct address-class variants don't
810 call replace_type(). */
811 gdb_assert (TYPE_ADDRESS_CLASS_ALL (chain
) == 0);
813 TYPE_LENGTH (chain
) = TYPE_LENGTH (type
);
814 chain
= TYPE_CHAIN (chain
);
816 while (ntype
!= chain
);
818 /* Assert that the two types have equivalent instance qualifiers.
819 This should be true for at least all of our debug readers. */
820 gdb_assert (TYPE_INSTANCE_FLAGS (ntype
) == TYPE_INSTANCE_FLAGS (type
));
823 /* Implement direct support for MEMBER_TYPE in GNU C++.
824 May need to construct such a type if this is the first use.
825 The TYPE is the type of the member. The DOMAIN is the type
826 of the aggregate that the member belongs to. */
829 lookup_memberptr_type (struct type
*type
, struct type
*domain
)
833 mtype
= alloc_type_copy (type
);
834 smash_to_memberptr_type (mtype
, domain
, type
);
838 /* Return a pointer-to-method type, for a method of type TO_TYPE. */
841 lookup_methodptr_type (struct type
*to_type
)
845 mtype
= alloc_type_copy (to_type
);
846 smash_to_methodptr_type (mtype
, to_type
);
850 /* Allocate a stub method whose return type is TYPE. This apparently
851 happens for speed of symbol reading, since parsing out the
852 arguments to the method is cpu-intensive, the way we are doing it.
853 So, we will fill in arguments later. This always returns a fresh
857 allocate_stub_method (struct type
*type
)
861 mtype
= alloc_type_copy (type
);
862 TYPE_CODE (mtype
) = TYPE_CODE_METHOD
;
863 TYPE_LENGTH (mtype
) = 1;
864 TYPE_STUB (mtype
) = 1;
865 TYPE_TARGET_TYPE (mtype
) = type
;
866 /* TYPE_SELF_TYPE (mtype) = unknown yet */
870 /* See gdbtypes.h. */
873 operator== (const dynamic_prop
&l
, const dynamic_prop
&r
)
875 if (l
.kind
!= r
.kind
)
883 return l
.data
.const_val
== r
.data
.const_val
;
884 case PROP_ADDR_OFFSET
:
887 return l
.data
.baton
== r
.data
.baton
;
890 gdb_assert_not_reached ("unhandled dynamic_prop kind");
893 /* See gdbtypes.h. */
896 operator== (const range_bounds
&l
, const range_bounds
&r
)
898 #define FIELD_EQ(FIELD) (l.FIELD == r.FIELD)
900 return (FIELD_EQ (low
)
902 && FIELD_EQ (flag_upper_bound_is_count
)
903 && FIELD_EQ (flag_bound_evaluated
)
909 /* Create a range type with a dynamic range from LOW_BOUND to
910 HIGH_BOUND, inclusive. See create_range_type for further details. */
913 create_range_type (struct type
*result_type
, struct type
*index_type
,
914 const struct dynamic_prop
*low_bound
,
915 const struct dynamic_prop
*high_bound
,
918 /* The INDEX_TYPE should be a type capable of holding the upper and lower
919 bounds, as such a zero sized, or void type makes no sense. */
920 gdb_assert (TYPE_CODE (index_type
) != TYPE_CODE_VOID
);
921 gdb_assert (TYPE_LENGTH (index_type
) > 0);
923 if (result_type
== NULL
)
924 result_type
= alloc_type_copy (index_type
);
925 TYPE_CODE (result_type
) = TYPE_CODE_RANGE
;
926 TYPE_TARGET_TYPE (result_type
) = index_type
;
927 if (TYPE_STUB (index_type
))
928 TYPE_TARGET_STUB (result_type
) = 1;
930 TYPE_LENGTH (result_type
) = TYPE_LENGTH (check_typedef (index_type
));
932 TYPE_RANGE_DATA (result_type
) = (struct range_bounds
*)
933 TYPE_ZALLOC (result_type
, sizeof (struct range_bounds
));
934 TYPE_RANGE_DATA (result_type
)->low
= *low_bound
;
935 TYPE_RANGE_DATA (result_type
)->high
= *high_bound
;
936 TYPE_RANGE_DATA (result_type
)->bias
= bias
;
938 /* Initialize the stride to be a constant, the value will already be zero
939 thanks to the use of TYPE_ZALLOC above. */
940 TYPE_RANGE_DATA (result_type
)->stride
.kind
= PROP_CONST
;
942 if (low_bound
->kind
== PROP_CONST
&& low_bound
->data
.const_val
>= 0)
943 TYPE_UNSIGNED (result_type
) = 1;
945 /* Ada allows the declaration of range types whose upper bound is
946 less than the lower bound, so checking the lower bound is not
947 enough. Make sure we do not mark a range type whose upper bound
948 is negative as unsigned. */
949 if (high_bound
->kind
== PROP_CONST
&& high_bound
->data
.const_val
< 0)
950 TYPE_UNSIGNED (result_type
) = 0;
955 /* See gdbtypes.h. */
958 create_range_type_with_stride (struct type
*result_type
,
959 struct type
*index_type
,
960 const struct dynamic_prop
*low_bound
,
961 const struct dynamic_prop
*high_bound
,
963 const struct dynamic_prop
*stride
,
966 result_type
= create_range_type (result_type
, index_type
, low_bound
,
969 gdb_assert (stride
!= nullptr);
970 TYPE_RANGE_DATA (result_type
)->stride
= *stride
;
971 TYPE_RANGE_DATA (result_type
)->flag_is_byte_stride
= byte_stride_p
;
978 /* Create a range type using either a blank type supplied in
979 RESULT_TYPE, or creating a new type, inheriting the objfile from
982 Indices will be of type INDEX_TYPE, and will range from LOW_BOUND
983 to HIGH_BOUND, inclusive.
985 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
986 sure it is TYPE_CODE_UNDEF before we bash it into a range type? */
989 create_static_range_type (struct type
*result_type
, struct type
*index_type
,
990 LONGEST low_bound
, LONGEST high_bound
)
992 struct dynamic_prop low
, high
;
994 low
.kind
= PROP_CONST
;
995 low
.data
.const_val
= low_bound
;
997 high
.kind
= PROP_CONST
;
998 high
.data
.const_val
= high_bound
;
1000 result_type
= create_range_type (result_type
, index_type
, &low
, &high
, 0);
1005 /* Predicate tests whether BOUNDS are static. Returns 1 if all bounds values
1006 are static, otherwise returns 0. */
1009 has_static_range (const struct range_bounds
*bounds
)
1011 /* If the range doesn't have a defined stride then its stride field will
1012 be initialized to the constant 0. */
1013 return (bounds
->low
.kind
== PROP_CONST
1014 && bounds
->high
.kind
== PROP_CONST
1015 && bounds
->stride
.kind
== PROP_CONST
);
1019 /* Set *LOWP and *HIGHP to the lower and upper bounds of discrete type
1020 TYPE. Return 1 if type is a range type, 0 if it is discrete (and
1021 bounds will fit in LONGEST), or -1 otherwise. */
1024 get_discrete_bounds (struct type
*type
, LONGEST
*lowp
, LONGEST
*highp
)
1026 type
= check_typedef (type
);
1027 switch (TYPE_CODE (type
))
1029 case TYPE_CODE_RANGE
:
1030 *lowp
= TYPE_LOW_BOUND (type
);
1031 *highp
= TYPE_HIGH_BOUND (type
);
1033 case TYPE_CODE_ENUM
:
1034 if (TYPE_NFIELDS (type
) > 0)
1036 /* The enums may not be sorted by value, so search all
1040 *lowp
= *highp
= TYPE_FIELD_ENUMVAL (type
, 0);
1041 for (i
= 0; i
< TYPE_NFIELDS (type
); i
++)
1043 if (TYPE_FIELD_ENUMVAL (type
, i
) < *lowp
)
1044 *lowp
= TYPE_FIELD_ENUMVAL (type
, i
);
1045 if (TYPE_FIELD_ENUMVAL (type
, i
) > *highp
)
1046 *highp
= TYPE_FIELD_ENUMVAL (type
, i
);
1049 /* Set unsigned indicator if warranted. */
1052 TYPE_UNSIGNED (type
) = 1;
1061 case TYPE_CODE_BOOL
:
1066 if (TYPE_LENGTH (type
) > sizeof (LONGEST
)) /* Too big */
1068 if (!TYPE_UNSIGNED (type
))
1070 *lowp
= -(1 << (TYPE_LENGTH (type
) * TARGET_CHAR_BIT
- 1));
1071 *highp
= -*lowp
- 1;
1075 case TYPE_CODE_CHAR
:
1077 /* This round-about calculation is to avoid shifting by
1078 TYPE_LENGTH (type) * TARGET_CHAR_BIT, which will not work
1079 if TYPE_LENGTH (type) == sizeof (LONGEST). */
1080 *highp
= 1 << (TYPE_LENGTH (type
) * TARGET_CHAR_BIT
- 1);
1081 *highp
= (*highp
- 1) | *highp
;
1088 /* Assuming TYPE is a simple, non-empty array type, compute its upper
1089 and lower bound. Save the low bound into LOW_BOUND if not NULL.
1090 Save the high bound into HIGH_BOUND if not NULL.
1092 Return 1 if the operation was successful. Return zero otherwise,
1093 in which case the values of LOW_BOUND and HIGH_BOUNDS are unmodified.
1095 We now simply use get_discrete_bounds call to get the values
1096 of the low and high bounds.
1097 get_discrete_bounds can return three values:
1098 1, meaning that index is a range,
1099 0, meaning that index is a discrete type,
1100 or -1 for failure. */
1103 get_array_bounds (struct type
*type
, LONGEST
*low_bound
, LONGEST
*high_bound
)
1105 struct type
*index
= TYPE_INDEX_TYPE (type
);
1113 res
= get_discrete_bounds (index
, &low
, &high
);
1117 /* Check if the array bounds are undefined. */
1119 && ((low_bound
&& TYPE_ARRAY_LOWER_BOUND_IS_UNDEFINED (type
))
1120 || (high_bound
&& TYPE_ARRAY_UPPER_BOUND_IS_UNDEFINED (type
))))
1132 /* Assuming that TYPE is a discrete type and VAL is a valid integer
1133 representation of a value of this type, save the corresponding
1134 position number in POS.
1136 Its differs from VAL only in the case of enumeration types. In
1137 this case, the position number of the value of the first listed
1138 enumeration literal is zero; the position number of the value of
1139 each subsequent enumeration literal is one more than that of its
1140 predecessor in the list.
1142 Return 1 if the operation was successful. Return zero otherwise,
1143 in which case the value of POS is unmodified.
1147 discrete_position (struct type
*type
, LONGEST val
, LONGEST
*pos
)
1149 if (TYPE_CODE (type
) == TYPE_CODE_ENUM
)
1153 for (i
= 0; i
< TYPE_NFIELDS (type
); i
+= 1)
1155 if (val
== TYPE_FIELD_ENUMVAL (type
, i
))
1161 /* Invalid enumeration value. */
1171 /* Create an array type using either a blank type supplied in
1172 RESULT_TYPE, or creating a new type, inheriting the objfile from
1175 Elements will be of type ELEMENT_TYPE, the indices will be of type
1178 BYTE_STRIDE_PROP, when not NULL, provides the array's byte stride.
1179 This byte stride property is added to the resulting array type
1180 as a DYN_PROP_BYTE_STRIDE. As a consequence, the BYTE_STRIDE_PROP
1181 argument can only be used to create types that are objfile-owned
1182 (see add_dyn_prop), meaning that either this function must be called
1183 with an objfile-owned RESULT_TYPE, or an objfile-owned RANGE_TYPE.
1185 BIT_STRIDE is taken into account only when BYTE_STRIDE_PROP is NULL.
1186 If BIT_STRIDE is not zero, build a packed array type whose element
1187 size is BIT_STRIDE. Otherwise, ignore this parameter.
1189 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
1190 sure it is TYPE_CODE_UNDEF before we bash it into an array
1194 create_array_type_with_stride (struct type
*result_type
,
1195 struct type
*element_type
,
1196 struct type
*range_type
,
1197 struct dynamic_prop
*byte_stride_prop
,
1198 unsigned int bit_stride
)
1200 if (byte_stride_prop
!= NULL
1201 && byte_stride_prop
->kind
== PROP_CONST
)
1203 /* The byte stride is actually not dynamic. Pretend we were
1204 called with bit_stride set instead of byte_stride_prop.
1205 This will give us the same result type, while avoiding
1206 the need to handle this as a special case. */
1207 bit_stride
= byte_stride_prop
->data
.const_val
* 8;
1208 byte_stride_prop
= NULL
;
1211 if (result_type
== NULL
)
1212 result_type
= alloc_type_copy (range_type
);
1214 TYPE_CODE (result_type
) = TYPE_CODE_ARRAY
;
1215 TYPE_TARGET_TYPE (result_type
) = element_type
;
1216 if (byte_stride_prop
== NULL
1217 && has_static_range (TYPE_RANGE_DATA (range_type
))
1218 && (!type_not_associated (result_type
)
1219 && !type_not_allocated (result_type
)))
1221 LONGEST low_bound
, high_bound
;
1222 unsigned int stride
;
1224 /* If the array itself doesn't provide a stride value then take
1225 whatever stride the range provides. Don't update BIT_STRIDE as
1226 we don't want to place the stride value from the range into this
1227 arrays bit size field. */
1228 stride
= bit_stride
;
1230 stride
= TYPE_BIT_STRIDE (range_type
);
1232 if (get_discrete_bounds (range_type
, &low_bound
, &high_bound
) < 0)
1233 low_bound
= high_bound
= 0;
1234 element_type
= check_typedef (element_type
);
1235 /* Be careful when setting the array length. Ada arrays can be
1236 empty arrays with the high_bound being smaller than the low_bound.
1237 In such cases, the array length should be zero. */
1238 if (high_bound
< low_bound
)
1239 TYPE_LENGTH (result_type
) = 0;
1240 else if (stride
> 0)
1241 TYPE_LENGTH (result_type
) =
1242 (stride
* (high_bound
- low_bound
+ 1) + 7) / 8;
1244 TYPE_LENGTH (result_type
) =
1245 TYPE_LENGTH (element_type
) * (high_bound
- low_bound
+ 1);
1249 /* This type is dynamic and its length needs to be computed
1250 on demand. In the meantime, avoid leaving the TYPE_LENGTH
1251 undefined by setting it to zero. Although we are not expected
1252 to trust TYPE_LENGTH in this case, setting the size to zero
1253 allows us to avoid allocating objects of random sizes in case
1254 we accidently do. */
1255 TYPE_LENGTH (result_type
) = 0;
1258 TYPE_NFIELDS (result_type
) = 1;
1259 TYPE_FIELDS (result_type
) =
1260 (struct field
*) TYPE_ZALLOC (result_type
, sizeof (struct field
));
1261 TYPE_INDEX_TYPE (result_type
) = range_type
;
1262 if (byte_stride_prop
!= NULL
)
1263 add_dyn_prop (DYN_PROP_BYTE_STRIDE
, *byte_stride_prop
, result_type
);
1264 else if (bit_stride
> 0)
1265 TYPE_FIELD_BITSIZE (result_type
, 0) = bit_stride
;
1267 /* TYPE_TARGET_STUB will take care of zero length arrays. */
1268 if (TYPE_LENGTH (result_type
) == 0)
1269 TYPE_TARGET_STUB (result_type
) = 1;
1274 /* Same as create_array_type_with_stride but with no bit_stride
1275 (BIT_STRIDE = 0), thus building an unpacked array. */
1278 create_array_type (struct type
*result_type
,
1279 struct type
*element_type
,
1280 struct type
*range_type
)
1282 return create_array_type_with_stride (result_type
, element_type
,
1283 range_type
, NULL
, 0);
1287 lookup_array_range_type (struct type
*element_type
,
1288 LONGEST low_bound
, LONGEST high_bound
)
1290 struct type
*index_type
;
1291 struct type
*range_type
;
1293 if (TYPE_OBJFILE_OWNED (element_type
))
1294 index_type
= objfile_type (TYPE_OWNER (element_type
).objfile
)->builtin_int
;
1296 index_type
= builtin_type (get_type_arch (element_type
))->builtin_int
;
1297 range_type
= create_static_range_type (NULL
, index_type
,
1298 low_bound
, high_bound
);
1300 return create_array_type (NULL
, element_type
, range_type
);
1303 /* Create a string type using either a blank type supplied in
1304 RESULT_TYPE, or creating a new type. String types are similar
1305 enough to array of char types that we can use create_array_type to
1306 build the basic type and then bash it into a string type.
1308 For fixed length strings, the range type contains 0 as the lower
1309 bound and the length of the string minus one as the upper bound.
1311 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
1312 sure it is TYPE_CODE_UNDEF before we bash it into a string
1316 create_string_type (struct type
*result_type
,
1317 struct type
*string_char_type
,
1318 struct type
*range_type
)
1320 result_type
= create_array_type (result_type
,
1323 TYPE_CODE (result_type
) = TYPE_CODE_STRING
;
1328 lookup_string_range_type (struct type
*string_char_type
,
1329 LONGEST low_bound
, LONGEST high_bound
)
1331 struct type
*result_type
;
1333 result_type
= lookup_array_range_type (string_char_type
,
1334 low_bound
, high_bound
);
1335 TYPE_CODE (result_type
) = TYPE_CODE_STRING
;
1340 create_set_type (struct type
*result_type
, struct type
*domain_type
)
1342 if (result_type
== NULL
)
1343 result_type
= alloc_type_copy (domain_type
);
1345 TYPE_CODE (result_type
) = TYPE_CODE_SET
;
1346 TYPE_NFIELDS (result_type
) = 1;
1347 TYPE_FIELDS (result_type
)
1348 = (struct field
*) TYPE_ZALLOC (result_type
, sizeof (struct field
));
1350 if (!TYPE_STUB (domain_type
))
1352 LONGEST low_bound
, high_bound
, bit_length
;
1354 if (get_discrete_bounds (domain_type
, &low_bound
, &high_bound
) < 0)
1355 low_bound
= high_bound
= 0;
1356 bit_length
= high_bound
- low_bound
+ 1;
1357 TYPE_LENGTH (result_type
)
1358 = (bit_length
+ TARGET_CHAR_BIT
- 1) / TARGET_CHAR_BIT
;
1360 TYPE_UNSIGNED (result_type
) = 1;
1362 TYPE_FIELD_TYPE (result_type
, 0) = domain_type
;
1367 /* Convert ARRAY_TYPE to a vector type. This may modify ARRAY_TYPE
1368 and any array types nested inside it. */
1371 make_vector_type (struct type
*array_type
)
1373 struct type
*inner_array
, *elt_type
;
1376 /* Find the innermost array type, in case the array is
1377 multi-dimensional. */
1378 inner_array
= array_type
;
1379 while (TYPE_CODE (TYPE_TARGET_TYPE (inner_array
)) == TYPE_CODE_ARRAY
)
1380 inner_array
= TYPE_TARGET_TYPE (inner_array
);
1382 elt_type
= TYPE_TARGET_TYPE (inner_array
);
1383 if (TYPE_CODE (elt_type
) == TYPE_CODE_INT
)
1385 flags
= TYPE_INSTANCE_FLAGS (elt_type
) | TYPE_INSTANCE_FLAG_NOTTEXT
;
1386 elt_type
= make_qualified_type (elt_type
, flags
, NULL
);
1387 TYPE_TARGET_TYPE (inner_array
) = elt_type
;
1390 TYPE_VECTOR (array_type
) = 1;
1394 init_vector_type (struct type
*elt_type
, int n
)
1396 struct type
*array_type
;
1398 array_type
= lookup_array_range_type (elt_type
, 0, n
- 1);
1399 make_vector_type (array_type
);
1403 /* Internal routine called by TYPE_SELF_TYPE to return the type that TYPE
1404 belongs to. In c++ this is the class of "this", but TYPE_THIS_TYPE is too
1405 confusing. "self" is a common enough replacement for "this".
1406 TYPE must be one of TYPE_CODE_METHODPTR, TYPE_CODE_MEMBERPTR, or
1407 TYPE_CODE_METHOD. */
1410 internal_type_self_type (struct type
*type
)
1412 switch (TYPE_CODE (type
))
1414 case TYPE_CODE_METHODPTR
:
1415 case TYPE_CODE_MEMBERPTR
:
1416 if (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_NONE
)
1418 gdb_assert (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_SELF_TYPE
);
1419 return TYPE_MAIN_TYPE (type
)->type_specific
.self_type
;
1420 case TYPE_CODE_METHOD
:
1421 if (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_NONE
)
1423 gdb_assert (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_FUNC
);
1424 return TYPE_MAIN_TYPE (type
)->type_specific
.func_stuff
->self_type
;
1426 gdb_assert_not_reached ("bad type");
1430 /* Set the type of the class that TYPE belongs to.
1431 In c++ this is the class of "this".
1432 TYPE must be one of TYPE_CODE_METHODPTR, TYPE_CODE_MEMBERPTR, or
1433 TYPE_CODE_METHOD. */
1436 set_type_self_type (struct type
*type
, struct type
*self_type
)
1438 switch (TYPE_CODE (type
))
1440 case TYPE_CODE_METHODPTR
:
1441 case TYPE_CODE_MEMBERPTR
:
1442 if (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_NONE
)
1443 TYPE_SPECIFIC_FIELD (type
) = TYPE_SPECIFIC_SELF_TYPE
;
1444 gdb_assert (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_SELF_TYPE
);
1445 TYPE_MAIN_TYPE (type
)->type_specific
.self_type
= self_type
;
1447 case TYPE_CODE_METHOD
:
1448 if (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_NONE
)
1449 INIT_FUNC_SPECIFIC (type
);
1450 gdb_assert (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_FUNC
);
1451 TYPE_MAIN_TYPE (type
)->type_specific
.func_stuff
->self_type
= self_type
;
1454 gdb_assert_not_reached ("bad type");
1458 /* Smash TYPE to be a type of pointers to members of SELF_TYPE with type
1459 TO_TYPE. A member pointer is a wierd thing -- it amounts to a
1460 typed offset into a struct, e.g. "an int at offset 8". A MEMBER
1461 TYPE doesn't include the offset (that's the value of the MEMBER
1462 itself), but does include the structure type into which it points
1465 When "smashing" the type, we preserve the objfile that the old type
1466 pointed to, since we aren't changing where the type is actually
1470 smash_to_memberptr_type (struct type
*type
, struct type
*self_type
,
1471 struct type
*to_type
)
1474 TYPE_CODE (type
) = TYPE_CODE_MEMBERPTR
;
1475 TYPE_TARGET_TYPE (type
) = to_type
;
1476 set_type_self_type (type
, self_type
);
1477 /* Assume that a data member pointer is the same size as a normal
1480 = gdbarch_ptr_bit (get_type_arch (to_type
)) / TARGET_CHAR_BIT
;
1483 /* Smash TYPE to be a type of pointer to methods type TO_TYPE.
1485 When "smashing" the type, we preserve the objfile that the old type
1486 pointed to, since we aren't changing where the type is actually
1490 smash_to_methodptr_type (struct type
*type
, struct type
*to_type
)
1493 TYPE_CODE (type
) = TYPE_CODE_METHODPTR
;
1494 TYPE_TARGET_TYPE (type
) = to_type
;
1495 set_type_self_type (type
, TYPE_SELF_TYPE (to_type
));
1496 TYPE_LENGTH (type
) = cplus_method_ptr_size (to_type
);
1499 /* Smash TYPE to be a type of method of SELF_TYPE with type TO_TYPE.
1500 METHOD just means `function that gets an extra "this" argument'.
1502 When "smashing" the type, we preserve the objfile that the old type
1503 pointed to, since we aren't changing where the type is actually
1507 smash_to_method_type (struct type
*type
, struct type
*self_type
,
1508 struct type
*to_type
, struct field
*args
,
1509 int nargs
, int varargs
)
1512 TYPE_CODE (type
) = TYPE_CODE_METHOD
;
1513 TYPE_TARGET_TYPE (type
) = to_type
;
1514 set_type_self_type (type
, self_type
);
1515 TYPE_FIELDS (type
) = args
;
1516 TYPE_NFIELDS (type
) = nargs
;
1518 TYPE_VARARGS (type
) = 1;
1519 TYPE_LENGTH (type
) = 1; /* In practice, this is never needed. */
1522 /* A wrapper of TYPE_NAME which calls error if the type is anonymous.
1523 Since GCC PR debug/47510 DWARF provides associated information to detect the
1524 anonymous class linkage name from its typedef.
1526 Parameter TYPE should not yet have CHECK_TYPEDEF applied, this function will
1530 type_name_or_error (struct type
*type
)
1532 struct type
*saved_type
= type
;
1534 struct objfile
*objfile
;
1536 type
= check_typedef (type
);
1538 name
= TYPE_NAME (type
);
1542 name
= TYPE_NAME (saved_type
);
1543 objfile
= TYPE_OBJFILE (saved_type
);
1544 error (_("Invalid anonymous type %s [in module %s], GCC PR debug/47510 bug?"),
1545 name
? name
: "<anonymous>",
1546 objfile
? objfile_name (objfile
) : "<arch>");
1549 /* Lookup a typedef or primitive type named NAME, visible in lexical
1550 block BLOCK. If NOERR is nonzero, return zero if NAME is not
1551 suitably defined. */
1554 lookup_typename (const struct language_defn
*language
,
1555 struct gdbarch
*gdbarch
, const char *name
,
1556 const struct block
*block
, int noerr
)
1560 sym
= lookup_symbol_in_language (name
, block
, VAR_DOMAIN
,
1561 language
->la_language
, NULL
).symbol
;
1562 if (sym
!= NULL
&& SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
1563 return SYMBOL_TYPE (sym
);
1567 error (_("No type named %s."), name
);
1571 lookup_unsigned_typename (const struct language_defn
*language
,
1572 struct gdbarch
*gdbarch
, const char *name
)
1574 char *uns
= (char *) alloca (strlen (name
) + 10);
1576 strcpy (uns
, "unsigned ");
1577 strcpy (uns
+ 9, name
);
1578 return lookup_typename (language
, gdbarch
, uns
, NULL
, 0);
1582 lookup_signed_typename (const struct language_defn
*language
,
1583 struct gdbarch
*gdbarch
, const char *name
)
1586 char *uns
= (char *) alloca (strlen (name
) + 8);
1588 strcpy (uns
, "signed ");
1589 strcpy (uns
+ 7, name
);
1590 t
= lookup_typename (language
, gdbarch
, uns
, NULL
, 1);
1591 /* If we don't find "signed FOO" just try again with plain "FOO". */
1594 return lookup_typename (language
, gdbarch
, name
, NULL
, 0);
1597 /* Lookup a structure type named "struct NAME",
1598 visible in lexical block BLOCK. */
1601 lookup_struct (const char *name
, const struct block
*block
)
1605 sym
= lookup_symbol (name
, block
, STRUCT_DOMAIN
, 0).symbol
;
1609 error (_("No struct type named %s."), name
);
1611 if (TYPE_CODE (SYMBOL_TYPE (sym
)) != TYPE_CODE_STRUCT
)
1613 error (_("This context has class, union or enum %s, not a struct."),
1616 return (SYMBOL_TYPE (sym
));
1619 /* Lookup a union type named "union NAME",
1620 visible in lexical block BLOCK. */
1623 lookup_union (const char *name
, const struct block
*block
)
1628 sym
= lookup_symbol (name
, block
, STRUCT_DOMAIN
, 0).symbol
;
1631 error (_("No union type named %s."), name
);
1633 t
= SYMBOL_TYPE (sym
);
1635 if (TYPE_CODE (t
) == TYPE_CODE_UNION
)
1638 /* If we get here, it's not a union. */
1639 error (_("This context has class, struct or enum %s, not a union."),
1643 /* Lookup an enum type named "enum NAME",
1644 visible in lexical block BLOCK. */
1647 lookup_enum (const char *name
, const struct block
*block
)
1651 sym
= lookup_symbol (name
, block
, STRUCT_DOMAIN
, 0).symbol
;
1654 error (_("No enum type named %s."), name
);
1656 if (TYPE_CODE (SYMBOL_TYPE (sym
)) != TYPE_CODE_ENUM
)
1658 error (_("This context has class, struct or union %s, not an enum."),
1661 return (SYMBOL_TYPE (sym
));
1664 /* Lookup a template type named "template NAME<TYPE>",
1665 visible in lexical block BLOCK. */
1668 lookup_template_type (const char *name
, struct type
*type
,
1669 const struct block
*block
)
1672 char *nam
= (char *)
1673 alloca (strlen (name
) + strlen (TYPE_NAME (type
)) + 4);
1677 strcat (nam
, TYPE_NAME (type
));
1678 strcat (nam
, " >"); /* FIXME, extra space still introduced in gcc? */
1680 sym
= lookup_symbol (nam
, block
, VAR_DOMAIN
, 0).symbol
;
1684 error (_("No template type named %s."), name
);
1686 if (TYPE_CODE (SYMBOL_TYPE (sym
)) != TYPE_CODE_STRUCT
)
1688 error (_("This context has class, union or enum %s, not a struct."),
1691 return (SYMBOL_TYPE (sym
));
1694 /* See gdbtypes.h. */
1697 lookup_struct_elt (struct type
*type
, const char *name
, int noerr
)
1703 type
= check_typedef (type
);
1704 if (TYPE_CODE (type
) != TYPE_CODE_PTR
1705 && TYPE_CODE (type
) != TYPE_CODE_REF
)
1707 type
= TYPE_TARGET_TYPE (type
);
1710 if (TYPE_CODE (type
) != TYPE_CODE_STRUCT
1711 && TYPE_CODE (type
) != TYPE_CODE_UNION
)
1713 std::string type_name
= type_to_string (type
);
1714 error (_("Type %s is not a structure or union type."),
1715 type_name
.c_str ());
1718 for (i
= TYPE_NFIELDS (type
) - 1; i
>= TYPE_N_BASECLASSES (type
); i
--)
1720 const char *t_field_name
= TYPE_FIELD_NAME (type
, i
);
1722 if (t_field_name
&& (strcmp_iw (t_field_name
, name
) == 0))
1724 return {&TYPE_FIELD (type
, i
), TYPE_FIELD_BITPOS (type
, i
)};
1726 else if (!t_field_name
|| *t_field_name
== '\0')
1729 = lookup_struct_elt (TYPE_FIELD_TYPE (type
, i
), name
, 1);
1730 if (elt
.field
!= NULL
)
1732 elt
.offset
+= TYPE_FIELD_BITPOS (type
, i
);
1738 /* OK, it's not in this class. Recursively check the baseclasses. */
1739 for (i
= TYPE_N_BASECLASSES (type
) - 1; i
>= 0; i
--)
1741 struct_elt elt
= lookup_struct_elt (TYPE_BASECLASS (type
, i
), name
, 1);
1742 if (elt
.field
!= NULL
)
1747 return {nullptr, 0};
1749 std::string type_name
= type_to_string (type
);
1750 error (_("Type %s has no component named %s."), type_name
.c_str (), name
);
1753 /* See gdbtypes.h. */
1756 lookup_struct_elt_type (struct type
*type
, const char *name
, int noerr
)
1758 struct_elt elt
= lookup_struct_elt (type
, name
, noerr
);
1759 if (elt
.field
!= NULL
)
1760 return FIELD_TYPE (*elt
.field
);
1765 /* Store in *MAX the largest number representable by unsigned integer type
1769 get_unsigned_type_max (struct type
*type
, ULONGEST
*max
)
1773 type
= check_typedef (type
);
1774 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_INT
&& TYPE_UNSIGNED (type
));
1775 gdb_assert (TYPE_LENGTH (type
) <= sizeof (ULONGEST
));
1777 /* Written this way to avoid overflow. */
1778 n
= TYPE_LENGTH (type
) * TARGET_CHAR_BIT
;
1779 *max
= ((((ULONGEST
) 1 << (n
- 1)) - 1) << 1) | 1;
1782 /* Store in *MIN, *MAX the smallest and largest numbers representable by
1783 signed integer type TYPE. */
1786 get_signed_type_minmax (struct type
*type
, LONGEST
*min
, LONGEST
*max
)
1790 type
= check_typedef (type
);
1791 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_INT
&& !TYPE_UNSIGNED (type
));
1792 gdb_assert (TYPE_LENGTH (type
) <= sizeof (LONGEST
));
1794 n
= TYPE_LENGTH (type
) * TARGET_CHAR_BIT
;
1795 *min
= -((ULONGEST
) 1 << (n
- 1));
1796 *max
= ((ULONGEST
) 1 << (n
- 1)) - 1;
1799 /* Internal routine called by TYPE_VPTR_FIELDNO to return the value of
1800 cplus_stuff.vptr_fieldno.
1802 cplus_stuff is initialized to cplus_struct_default which does not
1803 set vptr_fieldno to -1 for portability reasons (IWBN to use C99
1804 designated initializers). We cope with that here. */
1807 internal_type_vptr_fieldno (struct type
*type
)
1809 type
= check_typedef (type
);
1810 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_STRUCT
1811 || TYPE_CODE (type
) == TYPE_CODE_UNION
);
1812 if (!HAVE_CPLUS_STRUCT (type
))
1814 return TYPE_RAW_CPLUS_SPECIFIC (type
)->vptr_fieldno
;
1817 /* Set the value of cplus_stuff.vptr_fieldno. */
1820 set_type_vptr_fieldno (struct type
*type
, int fieldno
)
1822 type
= check_typedef (type
);
1823 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_STRUCT
1824 || TYPE_CODE (type
) == TYPE_CODE_UNION
);
1825 if (!HAVE_CPLUS_STRUCT (type
))
1826 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
1827 TYPE_RAW_CPLUS_SPECIFIC (type
)->vptr_fieldno
= fieldno
;
1830 /* Internal routine called by TYPE_VPTR_BASETYPE to return the value of
1831 cplus_stuff.vptr_basetype. */
1834 internal_type_vptr_basetype (struct type
*type
)
1836 type
= check_typedef (type
);
1837 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_STRUCT
1838 || TYPE_CODE (type
) == TYPE_CODE_UNION
);
1839 gdb_assert (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_CPLUS_STUFF
);
1840 return TYPE_RAW_CPLUS_SPECIFIC (type
)->vptr_basetype
;
1843 /* Set the value of cplus_stuff.vptr_basetype. */
1846 set_type_vptr_basetype (struct type
*type
, struct type
*basetype
)
1848 type
= check_typedef (type
);
1849 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_STRUCT
1850 || TYPE_CODE (type
) == TYPE_CODE_UNION
);
1851 if (!HAVE_CPLUS_STRUCT (type
))
1852 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
1853 TYPE_RAW_CPLUS_SPECIFIC (type
)->vptr_basetype
= basetype
;
1856 /* Lookup the vptr basetype/fieldno values for TYPE.
1857 If found store vptr_basetype in *BASETYPEP if non-NULL, and return
1858 vptr_fieldno. Also, if found and basetype is from the same objfile,
1860 If not found, return -1 and ignore BASETYPEP.
1861 Callers should be aware that in some cases (for example,
1862 the type or one of its baseclasses is a stub type and we are
1863 debugging a .o file, or the compiler uses DWARF-2 and is not GCC),
1864 this function will not be able to find the
1865 virtual function table pointer, and vptr_fieldno will remain -1 and
1866 vptr_basetype will remain NULL or incomplete. */
1869 get_vptr_fieldno (struct type
*type
, struct type
**basetypep
)
1871 type
= check_typedef (type
);
1873 if (TYPE_VPTR_FIELDNO (type
) < 0)
1877 /* We must start at zero in case the first (and only) baseclass
1878 is virtual (and hence we cannot share the table pointer). */
1879 for (i
= 0; i
< TYPE_N_BASECLASSES (type
); i
++)
1881 struct type
*baseclass
= check_typedef (TYPE_BASECLASS (type
, i
));
1883 struct type
*basetype
;
1885 fieldno
= get_vptr_fieldno (baseclass
, &basetype
);
1888 /* If the type comes from a different objfile we can't cache
1889 it, it may have a different lifetime. PR 2384 */
1890 if (TYPE_OBJFILE (type
) == TYPE_OBJFILE (basetype
))
1892 set_type_vptr_fieldno (type
, fieldno
);
1893 set_type_vptr_basetype (type
, basetype
);
1896 *basetypep
= basetype
;
1907 *basetypep
= TYPE_VPTR_BASETYPE (type
);
1908 return TYPE_VPTR_FIELDNO (type
);
1913 stub_noname_complaint (void)
1915 complaint (_("stub type has NULL name"));
1918 /* Return nonzero if TYPE has a DYN_PROP_BYTE_STRIDE dynamic property
1919 attached to it, and that property has a non-constant value. */
1922 array_type_has_dynamic_stride (struct type
*type
)
1924 struct dynamic_prop
*prop
= get_dyn_prop (DYN_PROP_BYTE_STRIDE
, type
);
1926 return (prop
!= NULL
&& prop
->kind
!= PROP_CONST
);
1929 /* Worker for is_dynamic_type. */
1932 is_dynamic_type_internal (struct type
*type
, int top_level
)
1934 type
= check_typedef (type
);
1936 /* We only want to recognize references at the outermost level. */
1937 if (top_level
&& TYPE_CODE (type
) == TYPE_CODE_REF
)
1938 type
= check_typedef (TYPE_TARGET_TYPE (type
));
1940 /* Types that have a dynamic TYPE_DATA_LOCATION are considered
1941 dynamic, even if the type itself is statically defined.
1942 From a user's point of view, this may appear counter-intuitive;
1943 but it makes sense in this context, because the point is to determine
1944 whether any part of the type needs to be resolved before it can
1946 if (TYPE_DATA_LOCATION (type
) != NULL
1947 && (TYPE_DATA_LOCATION_KIND (type
) == PROP_LOCEXPR
1948 || TYPE_DATA_LOCATION_KIND (type
) == PROP_LOCLIST
))
1951 if (TYPE_ASSOCIATED_PROP (type
))
1954 if (TYPE_ALLOCATED_PROP (type
))
1957 switch (TYPE_CODE (type
))
1959 case TYPE_CODE_RANGE
:
1961 /* A range type is obviously dynamic if it has at least one
1962 dynamic bound. But also consider the range type to be
1963 dynamic when its subtype is dynamic, even if the bounds
1964 of the range type are static. It allows us to assume that
1965 the subtype of a static range type is also static. */
1966 return (!has_static_range (TYPE_RANGE_DATA (type
))
1967 || is_dynamic_type_internal (TYPE_TARGET_TYPE (type
), 0));
1970 case TYPE_CODE_STRING
:
1971 /* Strings are very much like an array of characters, and can be
1972 treated as one here. */
1973 case TYPE_CODE_ARRAY
:
1975 gdb_assert (TYPE_NFIELDS (type
) == 1);
1977 /* The array is dynamic if either the bounds are dynamic... */
1978 if (is_dynamic_type_internal (TYPE_INDEX_TYPE (type
), 0))
1980 /* ... or the elements it contains have a dynamic contents... */
1981 if (is_dynamic_type_internal (TYPE_TARGET_TYPE (type
), 0))
1983 /* ... or if it has a dynamic stride... */
1984 if (array_type_has_dynamic_stride (type
))
1989 case TYPE_CODE_STRUCT
:
1990 case TYPE_CODE_UNION
:
1994 for (i
= 0; i
< TYPE_NFIELDS (type
); ++i
)
1995 if (!field_is_static (&TYPE_FIELD (type
, i
))
1996 && is_dynamic_type_internal (TYPE_FIELD_TYPE (type
, i
), 0))
2005 /* See gdbtypes.h. */
2008 is_dynamic_type (struct type
*type
)
2010 return is_dynamic_type_internal (type
, 1);
2013 static struct type
*resolve_dynamic_type_internal
2014 (struct type
*type
, struct property_addr_info
*addr_stack
, int top_level
);
2016 /* Given a dynamic range type (dyn_range_type) and a stack of
2017 struct property_addr_info elements, return a static version
2020 static struct type
*
2021 resolve_dynamic_range (struct type
*dyn_range_type
,
2022 struct property_addr_info
*addr_stack
)
2025 struct type
*static_range_type
, *static_target_type
;
2026 const struct dynamic_prop
*prop
;
2027 struct dynamic_prop low_bound
, high_bound
, stride
;
2029 gdb_assert (TYPE_CODE (dyn_range_type
) == TYPE_CODE_RANGE
);
2031 prop
= &TYPE_RANGE_DATA (dyn_range_type
)->low
;
2032 if (dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2034 low_bound
.kind
= PROP_CONST
;
2035 low_bound
.data
.const_val
= value
;
2039 low_bound
.kind
= PROP_UNDEFINED
;
2040 low_bound
.data
.const_val
= 0;
2043 prop
= &TYPE_RANGE_DATA (dyn_range_type
)->high
;
2044 if (dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2046 high_bound
.kind
= PROP_CONST
;
2047 high_bound
.data
.const_val
= value
;
2049 if (TYPE_RANGE_DATA (dyn_range_type
)->flag_upper_bound_is_count
)
2050 high_bound
.data
.const_val
2051 = low_bound
.data
.const_val
+ high_bound
.data
.const_val
- 1;
2055 high_bound
.kind
= PROP_UNDEFINED
;
2056 high_bound
.data
.const_val
= 0;
2059 bool byte_stride_p
= TYPE_RANGE_DATA (dyn_range_type
)->flag_is_byte_stride
;
2060 prop
= &TYPE_RANGE_DATA (dyn_range_type
)->stride
;
2061 if (dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2063 stride
.kind
= PROP_CONST
;
2064 stride
.data
.const_val
= value
;
2066 /* If we have a bit stride that is not an exact number of bytes then
2067 I really don't think this is going to work with current GDB, the
2068 array indexing code in GDB seems to be pretty heavily tied to byte
2069 offsets right now. Assuming 8 bits in a byte. */
2070 struct gdbarch
*gdbarch
= get_type_arch (dyn_range_type
);
2071 int unit_size
= gdbarch_addressable_memory_unit_size (gdbarch
);
2072 if (!byte_stride_p
&& (value
% (unit_size
* 8)) != 0)
2073 error (_("bit strides that are not a multiple of the byte size "
2074 "are currently not supported"));
2078 stride
.kind
= PROP_UNDEFINED
;
2079 stride
.data
.const_val
= 0;
2080 byte_stride_p
= true;
2084 = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (dyn_range_type
),
2086 LONGEST bias
= TYPE_RANGE_DATA (dyn_range_type
)->bias
;
2087 static_range_type
= create_range_type_with_stride
2088 (copy_type (dyn_range_type
), static_target_type
,
2089 &low_bound
, &high_bound
, bias
, &stride
, byte_stride_p
);
2090 TYPE_RANGE_DATA (static_range_type
)->flag_bound_evaluated
= 1;
2091 return static_range_type
;
2094 /* Resolves dynamic bound values of an array or string type TYPE to static
2095 ones. ADDR_STACK is a stack of struct property_addr_info to be used if
2096 needed during the dynamic resolution. */
2098 static struct type
*
2099 resolve_dynamic_array_or_string (struct type
*type
,
2100 struct property_addr_info
*addr_stack
)
2103 struct type
*elt_type
;
2104 struct type
*range_type
;
2105 struct type
*ary_dim
;
2106 struct dynamic_prop
*prop
;
2107 unsigned int bit_stride
= 0;
2109 /* For dynamic type resolution strings can be treated like arrays of
2111 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_ARRAY
2112 || TYPE_CODE (type
) == TYPE_CODE_STRING
);
2114 type
= copy_type (type
);
2117 range_type
= check_typedef (TYPE_INDEX_TYPE (elt_type
));
2118 range_type
= resolve_dynamic_range (range_type
, addr_stack
);
2120 /* Resolve allocated/associated here before creating a new array type, which
2121 will update the length of the array accordingly. */
2122 prop
= TYPE_ALLOCATED_PROP (type
);
2123 if (prop
!= NULL
&& dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2125 TYPE_DYN_PROP_ADDR (prop
) = value
;
2126 TYPE_DYN_PROP_KIND (prop
) = PROP_CONST
;
2128 prop
= TYPE_ASSOCIATED_PROP (type
);
2129 if (prop
!= NULL
&& dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2131 TYPE_DYN_PROP_ADDR (prop
) = value
;
2132 TYPE_DYN_PROP_KIND (prop
) = PROP_CONST
;
2135 ary_dim
= check_typedef (TYPE_TARGET_TYPE (elt_type
));
2137 if (ary_dim
!= NULL
&& TYPE_CODE (ary_dim
) == TYPE_CODE_ARRAY
)
2138 elt_type
= resolve_dynamic_array_or_string (ary_dim
, addr_stack
);
2140 elt_type
= TYPE_TARGET_TYPE (type
);
2142 prop
= get_dyn_prop (DYN_PROP_BYTE_STRIDE
, type
);
2145 if (dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2147 remove_dyn_prop (DYN_PROP_BYTE_STRIDE
, type
);
2148 bit_stride
= (unsigned int) (value
* 8);
2152 /* Could be a bug in our code, but it could also happen
2153 if the DWARF info is not correct. Issue a warning,
2154 and assume no byte/bit stride (leave bit_stride = 0). */
2155 warning (_("cannot determine array stride for type %s"),
2156 TYPE_NAME (type
) ? TYPE_NAME (type
) : "<no name>");
2160 bit_stride
= TYPE_FIELD_BITSIZE (type
, 0);
2162 return create_array_type_with_stride (type
, elt_type
, range_type
, NULL
,
2166 /* Resolve dynamic bounds of members of the union TYPE to static
2167 bounds. ADDR_STACK is a stack of struct property_addr_info
2168 to be used if needed during the dynamic resolution. */
2170 static struct type
*
2171 resolve_dynamic_union (struct type
*type
,
2172 struct property_addr_info
*addr_stack
)
2174 struct type
*resolved_type
;
2176 unsigned int max_len
= 0;
2178 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_UNION
);
2180 resolved_type
= copy_type (type
);
2181 TYPE_FIELDS (resolved_type
)
2182 = (struct field
*) TYPE_ALLOC (resolved_type
,
2183 TYPE_NFIELDS (resolved_type
)
2184 * sizeof (struct field
));
2185 memcpy (TYPE_FIELDS (resolved_type
),
2187 TYPE_NFIELDS (resolved_type
) * sizeof (struct field
));
2188 for (i
= 0; i
< TYPE_NFIELDS (resolved_type
); ++i
)
2192 if (field_is_static (&TYPE_FIELD (type
, i
)))
2195 t
= resolve_dynamic_type_internal (TYPE_FIELD_TYPE (resolved_type
, i
),
2197 TYPE_FIELD_TYPE (resolved_type
, i
) = t
;
2198 if (TYPE_LENGTH (t
) > max_len
)
2199 max_len
= TYPE_LENGTH (t
);
2202 TYPE_LENGTH (resolved_type
) = max_len
;
2203 return resolved_type
;
2206 /* Resolve dynamic bounds of members of the struct TYPE to static
2207 bounds. ADDR_STACK is a stack of struct property_addr_info to
2208 be used if needed during the dynamic resolution. */
2210 static struct type
*
2211 resolve_dynamic_struct (struct type
*type
,
2212 struct property_addr_info
*addr_stack
)
2214 struct type
*resolved_type
;
2216 unsigned resolved_type_bit_length
= 0;
2218 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_STRUCT
);
2219 gdb_assert (TYPE_NFIELDS (type
) > 0);
2221 resolved_type
= copy_type (type
);
2222 TYPE_FIELDS (resolved_type
)
2223 = (struct field
*) TYPE_ALLOC (resolved_type
,
2224 TYPE_NFIELDS (resolved_type
)
2225 * sizeof (struct field
));
2226 memcpy (TYPE_FIELDS (resolved_type
),
2228 TYPE_NFIELDS (resolved_type
) * sizeof (struct field
));
2229 for (i
= 0; i
< TYPE_NFIELDS (resolved_type
); ++i
)
2231 unsigned new_bit_length
;
2232 struct property_addr_info pinfo
;
2234 if (field_is_static (&TYPE_FIELD (type
, i
)))
2237 /* As we know this field is not a static field, the field's
2238 field_loc_kind should be FIELD_LOC_KIND_BITPOS. Verify
2239 this is the case, but only trigger a simple error rather
2240 than an internal error if that fails. While failing
2241 that verification indicates a bug in our code, the error
2242 is not severe enough to suggest to the user he stops
2243 his debugging session because of it. */
2244 if (TYPE_FIELD_LOC_KIND (type
, i
) != FIELD_LOC_KIND_BITPOS
)
2245 error (_("Cannot determine struct field location"
2246 " (invalid location kind)"));
2248 pinfo
.type
= check_typedef (TYPE_FIELD_TYPE (type
, i
));
2249 pinfo
.valaddr
= addr_stack
->valaddr
;
2252 + (TYPE_FIELD_BITPOS (resolved_type
, i
) / TARGET_CHAR_BIT
));
2253 pinfo
.next
= addr_stack
;
2255 TYPE_FIELD_TYPE (resolved_type
, i
)
2256 = resolve_dynamic_type_internal (TYPE_FIELD_TYPE (resolved_type
, i
),
2258 gdb_assert (TYPE_FIELD_LOC_KIND (resolved_type
, i
)
2259 == FIELD_LOC_KIND_BITPOS
);
2261 new_bit_length
= TYPE_FIELD_BITPOS (resolved_type
, i
);
2262 if (TYPE_FIELD_BITSIZE (resolved_type
, i
) != 0)
2263 new_bit_length
+= TYPE_FIELD_BITSIZE (resolved_type
, i
);
2265 new_bit_length
+= (TYPE_LENGTH (TYPE_FIELD_TYPE (resolved_type
, i
))
2268 /* Normally, we would use the position and size of the last field
2269 to determine the size of the enclosing structure. But GCC seems
2270 to be encoding the position of some fields incorrectly when
2271 the struct contains a dynamic field that is not placed last.
2272 So we compute the struct size based on the field that has
2273 the highest position + size - probably the best we can do. */
2274 if (new_bit_length
> resolved_type_bit_length
)
2275 resolved_type_bit_length
= new_bit_length
;
2278 /* The length of a type won't change for fortran, but it does for C and Ada.
2279 For fortran the size of dynamic fields might change over time but not the
2280 type length of the structure. If we adapt it, we run into problems
2281 when calculating the element offset for arrays of structs. */
2282 if (current_language
->la_language
!= language_fortran
)
2283 TYPE_LENGTH (resolved_type
)
2284 = (resolved_type_bit_length
+ TARGET_CHAR_BIT
- 1) / TARGET_CHAR_BIT
;
2286 /* The Ada language uses this field as a cache for static fixed types: reset
2287 it as RESOLVED_TYPE must have its own static fixed type. */
2288 TYPE_TARGET_TYPE (resolved_type
) = NULL
;
2290 return resolved_type
;
2293 /* Worker for resolved_dynamic_type. */
2295 static struct type
*
2296 resolve_dynamic_type_internal (struct type
*type
,
2297 struct property_addr_info
*addr_stack
,
2300 struct type
*real_type
= check_typedef (type
);
2301 struct type
*resolved_type
= type
;
2302 struct dynamic_prop
*prop
;
2305 if (!is_dynamic_type_internal (real_type
, top_level
))
2308 if (TYPE_CODE (type
) == TYPE_CODE_TYPEDEF
)
2310 resolved_type
= copy_type (type
);
2311 TYPE_TARGET_TYPE (resolved_type
)
2312 = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (type
), addr_stack
,
2317 /* Before trying to resolve TYPE, make sure it is not a stub. */
2320 switch (TYPE_CODE (type
))
2324 struct property_addr_info pinfo
;
2326 pinfo
.type
= check_typedef (TYPE_TARGET_TYPE (type
));
2327 pinfo
.valaddr
= NULL
;
2328 if (addr_stack
->valaddr
!= NULL
)
2329 pinfo
.addr
= extract_typed_address (addr_stack
->valaddr
, type
);
2331 pinfo
.addr
= read_memory_typed_address (addr_stack
->addr
, type
);
2332 pinfo
.next
= addr_stack
;
2334 resolved_type
= copy_type (type
);
2335 TYPE_TARGET_TYPE (resolved_type
)
2336 = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (type
),
2341 case TYPE_CODE_STRING
:
2342 /* Strings are very much like an array of characters, and can be
2343 treated as one here. */
2344 case TYPE_CODE_ARRAY
:
2345 resolved_type
= resolve_dynamic_array_or_string (type
, addr_stack
);
2348 case TYPE_CODE_RANGE
:
2349 resolved_type
= resolve_dynamic_range (type
, addr_stack
);
2352 case TYPE_CODE_UNION
:
2353 resolved_type
= resolve_dynamic_union (type
, addr_stack
);
2356 case TYPE_CODE_STRUCT
:
2357 resolved_type
= resolve_dynamic_struct (type
, addr_stack
);
2362 /* Resolve data_location attribute. */
2363 prop
= TYPE_DATA_LOCATION (resolved_type
);
2365 && dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2367 TYPE_DYN_PROP_ADDR (prop
) = value
;
2368 TYPE_DYN_PROP_KIND (prop
) = PROP_CONST
;
2371 return resolved_type
;
2374 /* See gdbtypes.h */
2377 resolve_dynamic_type (struct type
*type
, const gdb_byte
*valaddr
,
2380 struct property_addr_info pinfo
2381 = {check_typedef (type
), valaddr
, addr
, NULL
};
2383 return resolve_dynamic_type_internal (type
, &pinfo
, 1);
2386 /* See gdbtypes.h */
2388 struct dynamic_prop
*
2389 get_dyn_prop (enum dynamic_prop_node_kind prop_kind
, const struct type
*type
)
2391 struct dynamic_prop_list
*node
= TYPE_DYN_PROP_LIST (type
);
2393 while (node
!= NULL
)
2395 if (node
->prop_kind
== prop_kind
)
2402 /* See gdbtypes.h */
2405 add_dyn_prop (enum dynamic_prop_node_kind prop_kind
, struct dynamic_prop prop
,
2408 struct dynamic_prop_list
*temp
;
2410 gdb_assert (TYPE_OBJFILE_OWNED (type
));
2412 temp
= XOBNEW (&TYPE_OBJFILE (type
)->objfile_obstack
,
2413 struct dynamic_prop_list
);
2414 temp
->prop_kind
= prop_kind
;
2416 temp
->next
= TYPE_DYN_PROP_LIST (type
);
2418 TYPE_DYN_PROP_LIST (type
) = temp
;
2421 /* Remove dynamic property from TYPE in case it exists. */
2424 remove_dyn_prop (enum dynamic_prop_node_kind prop_kind
,
2427 struct dynamic_prop_list
*prev_node
, *curr_node
;
2429 curr_node
= TYPE_DYN_PROP_LIST (type
);
2432 while (NULL
!= curr_node
)
2434 if (curr_node
->prop_kind
== prop_kind
)
2436 /* Update the linked list but don't free anything.
2437 The property was allocated on objstack and it is not known
2438 if we are on top of it. Nevertheless, everything is released
2439 when the complete objstack is freed. */
2440 if (NULL
== prev_node
)
2441 TYPE_DYN_PROP_LIST (type
) = curr_node
->next
;
2443 prev_node
->next
= curr_node
->next
;
2448 prev_node
= curr_node
;
2449 curr_node
= curr_node
->next
;
2453 /* Find the real type of TYPE. This function returns the real type,
2454 after removing all layers of typedefs, and completing opaque or stub
2455 types. Completion changes the TYPE argument, but stripping of
2458 Instance flags (e.g. const/volatile) are preserved as typedefs are
2459 stripped. If necessary a new qualified form of the underlying type
2462 NOTE: This will return a typedef if TYPE_TARGET_TYPE for the typedef has
2463 not been computed and we're either in the middle of reading symbols, or
2464 there was no name for the typedef in the debug info.
2466 NOTE: Lookup of opaque types can throw errors for invalid symbol files.
2467 QUITs in the symbol reading code can also throw.
2468 Thus this function can throw an exception.
2470 If TYPE is a TYPE_CODE_TYPEDEF, its length is updated to the length of
2473 If this is a stubbed struct (i.e. declared as struct foo *), see if
2474 we can find a full definition in some other file. If so, copy this
2475 definition, so we can use it in future. There used to be a comment
2476 (but not any code) that if we don't find a full definition, we'd
2477 set a flag so we don't spend time in the future checking the same
2478 type. That would be a mistake, though--we might load in more
2479 symbols which contain a full definition for the type. */
2482 check_typedef (struct type
*type
)
2484 struct type
*orig_type
= type
;
2485 /* While we're removing typedefs, we don't want to lose qualifiers.
2486 E.g., const/volatile. */
2487 int instance_flags
= TYPE_INSTANCE_FLAGS (type
);
2491 while (TYPE_CODE (type
) == TYPE_CODE_TYPEDEF
)
2493 if (!TYPE_TARGET_TYPE (type
))
2498 /* It is dangerous to call lookup_symbol if we are currently
2499 reading a symtab. Infinite recursion is one danger. */
2500 if (currently_reading_symtab
)
2501 return make_qualified_type (type
, instance_flags
, NULL
);
2503 name
= TYPE_NAME (type
);
2504 /* FIXME: shouldn't we look in STRUCT_DOMAIN and/or
2505 VAR_DOMAIN as appropriate? */
2508 stub_noname_complaint ();
2509 return make_qualified_type (type
, instance_flags
, NULL
);
2511 sym
= lookup_symbol (name
, 0, STRUCT_DOMAIN
, 0).symbol
;
2513 TYPE_TARGET_TYPE (type
) = SYMBOL_TYPE (sym
);
2514 else /* TYPE_CODE_UNDEF */
2515 TYPE_TARGET_TYPE (type
) = alloc_type_arch (get_type_arch (type
));
2517 type
= TYPE_TARGET_TYPE (type
);
2519 /* Preserve the instance flags as we traverse down the typedef chain.
2521 Handling address spaces/classes is nasty, what do we do if there's a
2523 E.g., what if an outer typedef marks the type as class_1 and an inner
2524 typedef marks the type as class_2?
2525 This is the wrong place to do such error checking. We leave it to
2526 the code that created the typedef in the first place to flag the
2527 error. We just pick the outer address space (akin to letting the
2528 outer cast in a chain of casting win), instead of assuming
2529 "it can't happen". */
2531 const int ALL_SPACES
= (TYPE_INSTANCE_FLAG_CODE_SPACE
2532 | TYPE_INSTANCE_FLAG_DATA_SPACE
);
2533 const int ALL_CLASSES
= TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL
;
2534 int new_instance_flags
= TYPE_INSTANCE_FLAGS (type
);
2536 /* Treat code vs data spaces and address classes separately. */
2537 if ((instance_flags
& ALL_SPACES
) != 0)
2538 new_instance_flags
&= ~ALL_SPACES
;
2539 if ((instance_flags
& ALL_CLASSES
) != 0)
2540 new_instance_flags
&= ~ALL_CLASSES
;
2542 instance_flags
|= new_instance_flags
;
2546 /* If this is a struct/class/union with no fields, then check
2547 whether a full definition exists somewhere else. This is for
2548 systems where a type definition with no fields is issued for such
2549 types, instead of identifying them as stub types in the first
2552 if (TYPE_IS_OPAQUE (type
)
2553 && opaque_type_resolution
2554 && !currently_reading_symtab
)
2556 const char *name
= TYPE_NAME (type
);
2557 struct type
*newtype
;
2561 stub_noname_complaint ();
2562 return make_qualified_type (type
, instance_flags
, NULL
);
2564 newtype
= lookup_transparent_type (name
);
2568 /* If the resolved type and the stub are in the same
2569 objfile, then replace the stub type with the real deal.
2570 But if they're in separate objfiles, leave the stub
2571 alone; we'll just look up the transparent type every time
2572 we call check_typedef. We can't create pointers between
2573 types allocated to different objfiles, since they may
2574 have different lifetimes. Trying to copy NEWTYPE over to
2575 TYPE's objfile is pointless, too, since you'll have to
2576 move over any other types NEWTYPE refers to, which could
2577 be an unbounded amount of stuff. */
2578 if (TYPE_OBJFILE (newtype
) == TYPE_OBJFILE (type
))
2579 type
= make_qualified_type (newtype
,
2580 TYPE_INSTANCE_FLAGS (type
),
2586 /* Otherwise, rely on the stub flag being set for opaque/stubbed
2588 else if (TYPE_STUB (type
) && !currently_reading_symtab
)
2590 const char *name
= TYPE_NAME (type
);
2591 /* FIXME: shouldn't we look in STRUCT_DOMAIN and/or VAR_DOMAIN
2597 stub_noname_complaint ();
2598 return make_qualified_type (type
, instance_flags
, NULL
);
2600 sym
= lookup_symbol (name
, 0, STRUCT_DOMAIN
, 0).symbol
;
2603 /* Same as above for opaque types, we can replace the stub
2604 with the complete type only if they are in the same
2606 if (TYPE_OBJFILE (SYMBOL_TYPE(sym
)) == TYPE_OBJFILE (type
))
2607 type
= make_qualified_type (SYMBOL_TYPE (sym
),
2608 TYPE_INSTANCE_FLAGS (type
),
2611 type
= SYMBOL_TYPE (sym
);
2615 if (TYPE_TARGET_STUB (type
))
2617 struct type
*target_type
= check_typedef (TYPE_TARGET_TYPE (type
));
2619 if (TYPE_STUB (target_type
) || TYPE_TARGET_STUB (target_type
))
2621 /* Nothing we can do. */
2623 else if (TYPE_CODE (type
) == TYPE_CODE_RANGE
)
2625 TYPE_LENGTH (type
) = TYPE_LENGTH (target_type
);
2626 TYPE_TARGET_STUB (type
) = 0;
2630 type
= make_qualified_type (type
, instance_flags
, NULL
);
2632 /* Cache TYPE_LENGTH for future use. */
2633 TYPE_LENGTH (orig_type
) = TYPE_LENGTH (type
);
2638 /* Parse a type expression in the string [P..P+LENGTH). If an error
2639 occurs, silently return a void type. */
2641 static struct type
*
2642 safe_parse_type (struct gdbarch
*gdbarch
, char *p
, int length
)
2644 struct ui_file
*saved_gdb_stderr
;
2645 struct type
*type
= NULL
; /* Initialize to keep gcc happy. */
2647 /* Suppress error messages. */
2648 saved_gdb_stderr
= gdb_stderr
;
2649 gdb_stderr
= &null_stream
;
2651 /* Call parse_and_eval_type() without fear of longjmp()s. */
2654 type
= parse_and_eval_type (p
, length
);
2656 catch (const gdb_exception_error
&except
)
2658 type
= builtin_type (gdbarch
)->builtin_void
;
2661 /* Stop suppressing error messages. */
2662 gdb_stderr
= saved_gdb_stderr
;
2667 /* Ugly hack to convert method stubs into method types.
2669 He ain't kiddin'. This demangles the name of the method into a
2670 string including argument types, parses out each argument type,
2671 generates a string casting a zero to that type, evaluates the
2672 string, and stuffs the resulting type into an argtype vector!!!
2673 Then it knows the type of the whole function (including argument
2674 types for overloading), which info used to be in the stab's but was
2675 removed to hack back the space required for them. */
2678 check_stub_method (struct type
*type
, int method_id
, int signature_id
)
2680 struct gdbarch
*gdbarch
= get_type_arch (type
);
2682 char *mangled_name
= gdb_mangle_name (type
, method_id
, signature_id
);
2683 char *demangled_name
= gdb_demangle (mangled_name
,
2684 DMGL_PARAMS
| DMGL_ANSI
);
2685 char *argtypetext
, *p
;
2686 int depth
= 0, argcount
= 1;
2687 struct field
*argtypes
;
2690 /* Make sure we got back a function string that we can use. */
2692 p
= strchr (demangled_name
, '(');
2696 if (demangled_name
== NULL
|| p
== NULL
)
2697 error (_("Internal: Cannot demangle mangled name `%s'."),
2700 /* Now, read in the parameters that define this type. */
2705 if (*p
== '(' || *p
== '<')
2709 else if (*p
== ')' || *p
== '>')
2713 else if (*p
== ',' && depth
== 0)
2721 /* If we read one argument and it was ``void'', don't count it. */
2722 if (startswith (argtypetext
, "(void)"))
2725 /* We need one extra slot, for the THIS pointer. */
2727 argtypes
= (struct field
*)
2728 TYPE_ALLOC (type
, (argcount
+ 1) * sizeof (struct field
));
2731 /* Add THIS pointer for non-static methods. */
2732 f
= TYPE_FN_FIELDLIST1 (type
, method_id
);
2733 if (TYPE_FN_FIELD_STATIC_P (f
, signature_id
))
2737 argtypes
[0].type
= lookup_pointer_type (type
);
2741 if (*p
!= ')') /* () means no args, skip while. */
2746 if (depth
<= 0 && (*p
== ',' || *p
== ')'))
2748 /* Avoid parsing of ellipsis, they will be handled below.
2749 Also avoid ``void'' as above. */
2750 if (strncmp (argtypetext
, "...", p
- argtypetext
) != 0
2751 && strncmp (argtypetext
, "void", p
- argtypetext
) != 0)
2753 argtypes
[argcount
].type
=
2754 safe_parse_type (gdbarch
, argtypetext
, p
- argtypetext
);
2757 argtypetext
= p
+ 1;
2760 if (*p
== '(' || *p
== '<')
2764 else if (*p
== ')' || *p
== '>')
2773 TYPE_FN_FIELD_PHYSNAME (f
, signature_id
) = mangled_name
;
2775 /* Now update the old "stub" type into a real type. */
2776 mtype
= TYPE_FN_FIELD_TYPE (f
, signature_id
);
2777 /* MTYPE may currently be a function (TYPE_CODE_FUNC).
2778 We want a method (TYPE_CODE_METHOD). */
2779 smash_to_method_type (mtype
, type
, TYPE_TARGET_TYPE (mtype
),
2780 argtypes
, argcount
, p
[-2] == '.');
2781 TYPE_STUB (mtype
) = 0;
2782 TYPE_FN_FIELD_STUB (f
, signature_id
) = 0;
2784 xfree (demangled_name
);
2787 /* This is the external interface to check_stub_method, above. This
2788 function unstubs all of the signatures for TYPE's METHOD_ID method
2789 name. After calling this function TYPE_FN_FIELD_STUB will be
2790 cleared for each signature and TYPE_FN_FIELDLIST_NAME will be
2793 This function unfortunately can not die until stabs do. */
2796 check_stub_method_group (struct type
*type
, int method_id
)
2798 int len
= TYPE_FN_FIELDLIST_LENGTH (type
, method_id
);
2799 struct fn_field
*f
= TYPE_FN_FIELDLIST1 (type
, method_id
);
2801 for (int j
= 0; j
< len
; j
++)
2803 if (TYPE_FN_FIELD_STUB (f
, j
))
2804 check_stub_method (type
, method_id
, j
);
2808 /* Ensure it is in .rodata (if available) by working around GCC PR 44690. */
2809 const struct cplus_struct_type cplus_struct_default
= { };
2812 allocate_cplus_struct_type (struct type
*type
)
2814 if (HAVE_CPLUS_STRUCT (type
))
2815 /* Structure was already allocated. Nothing more to do. */
2818 TYPE_SPECIFIC_FIELD (type
) = TYPE_SPECIFIC_CPLUS_STUFF
;
2819 TYPE_RAW_CPLUS_SPECIFIC (type
) = (struct cplus_struct_type
*)
2820 TYPE_ALLOC (type
, sizeof (struct cplus_struct_type
));
2821 *(TYPE_RAW_CPLUS_SPECIFIC (type
)) = cplus_struct_default
;
2822 set_type_vptr_fieldno (type
, -1);
2825 const struct gnat_aux_type gnat_aux_default
=
2828 /* Set the TYPE's type-specific kind to TYPE_SPECIFIC_GNAT_STUFF,
2829 and allocate the associated gnat-specific data. The gnat-specific
2830 data is also initialized to gnat_aux_default. */
2833 allocate_gnat_aux_type (struct type
*type
)
2835 TYPE_SPECIFIC_FIELD (type
) = TYPE_SPECIFIC_GNAT_STUFF
;
2836 TYPE_GNAT_SPECIFIC (type
) = (struct gnat_aux_type
*)
2837 TYPE_ALLOC (type
, sizeof (struct gnat_aux_type
));
2838 *(TYPE_GNAT_SPECIFIC (type
)) = gnat_aux_default
;
2841 /* Helper function to initialize a newly allocated type. Set type code
2842 to CODE and initialize the type-specific fields accordingly. */
2845 set_type_code (struct type
*type
, enum type_code code
)
2847 TYPE_CODE (type
) = code
;
2851 case TYPE_CODE_STRUCT
:
2852 case TYPE_CODE_UNION
:
2853 case TYPE_CODE_NAMESPACE
:
2854 INIT_CPLUS_SPECIFIC (type
);
2857 TYPE_SPECIFIC_FIELD (type
) = TYPE_SPECIFIC_FLOATFORMAT
;
2859 case TYPE_CODE_FUNC
:
2860 INIT_FUNC_SPECIFIC (type
);
2865 /* Helper function to verify floating-point format and size.
2866 BIT is the type size in bits; if BIT equals -1, the size is
2867 determined by the floatformat. Returns size to be used. */
2870 verify_floatformat (int bit
, const struct floatformat
*floatformat
)
2872 gdb_assert (floatformat
!= NULL
);
2875 bit
= floatformat
->totalsize
;
2877 gdb_assert (bit
>= 0);
2878 gdb_assert (bit
>= floatformat
->totalsize
);
2883 /* Return the floating-point format for a floating-point variable of
2886 const struct floatformat
*
2887 floatformat_from_type (const struct type
*type
)
2889 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_FLT
);
2890 gdb_assert (TYPE_FLOATFORMAT (type
));
2891 return TYPE_FLOATFORMAT (type
);
2894 /* Helper function to initialize the standard scalar types.
2896 If NAME is non-NULL, then it is used to initialize the type name.
2897 Note that NAME is not copied; it is required to have a lifetime at
2898 least as long as OBJFILE. */
2901 init_type (struct objfile
*objfile
, enum type_code code
, int bit
,
2906 type
= alloc_type (objfile
);
2907 set_type_code (type
, code
);
2908 gdb_assert ((bit
% TARGET_CHAR_BIT
) == 0);
2909 TYPE_LENGTH (type
) = bit
/ TARGET_CHAR_BIT
;
2910 TYPE_NAME (type
) = name
;
2915 /* Allocate a TYPE_CODE_ERROR type structure associated with OBJFILE,
2916 to use with variables that have no debug info. NAME is the type
2919 static struct type
*
2920 init_nodebug_var_type (struct objfile
*objfile
, const char *name
)
2922 return init_type (objfile
, TYPE_CODE_ERROR
, 0, name
);
2925 /* Allocate a TYPE_CODE_INT type structure associated with OBJFILE.
2926 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
2927 the type's TYPE_UNSIGNED flag. NAME is the type name. */
2930 init_integer_type (struct objfile
*objfile
,
2931 int bit
, int unsigned_p
, const char *name
)
2935 t
= init_type (objfile
, TYPE_CODE_INT
, bit
, name
);
2937 TYPE_UNSIGNED (t
) = 1;
2942 /* Allocate a TYPE_CODE_CHAR type structure associated with OBJFILE.
2943 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
2944 the type's TYPE_UNSIGNED flag. NAME is the type name. */
2947 init_character_type (struct objfile
*objfile
,
2948 int bit
, int unsigned_p
, const char *name
)
2952 t
= init_type (objfile
, TYPE_CODE_CHAR
, bit
, name
);
2954 TYPE_UNSIGNED (t
) = 1;
2959 /* Allocate a TYPE_CODE_BOOL type structure associated with OBJFILE.
2960 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
2961 the type's TYPE_UNSIGNED flag. NAME is the type name. */
2964 init_boolean_type (struct objfile
*objfile
,
2965 int bit
, int unsigned_p
, const char *name
)
2969 t
= init_type (objfile
, TYPE_CODE_BOOL
, bit
, name
);
2971 TYPE_UNSIGNED (t
) = 1;
2976 /* Allocate a TYPE_CODE_FLT type structure associated with OBJFILE.
2977 BIT is the type size in bits; if BIT equals -1, the size is
2978 determined by the floatformat. NAME is the type name. Set the
2979 TYPE_FLOATFORMAT from FLOATFORMATS. */
2982 init_float_type (struct objfile
*objfile
,
2983 int bit
, const char *name
,
2984 const struct floatformat
**floatformats
)
2986 struct gdbarch
*gdbarch
= get_objfile_arch (objfile
);
2987 const struct floatformat
*fmt
= floatformats
[gdbarch_byte_order (gdbarch
)];
2990 bit
= verify_floatformat (bit
, fmt
);
2991 t
= init_type (objfile
, TYPE_CODE_FLT
, bit
, name
);
2992 TYPE_FLOATFORMAT (t
) = fmt
;
2997 /* Allocate a TYPE_CODE_DECFLOAT type structure associated with OBJFILE.
2998 BIT is the type size in bits. NAME is the type name. */
3001 init_decfloat_type (struct objfile
*objfile
, int bit
, const char *name
)
3005 t
= init_type (objfile
, TYPE_CODE_DECFLOAT
, bit
, name
);
3009 /* Allocate a TYPE_CODE_COMPLEX type structure associated with OBJFILE.
3010 NAME is the type name. TARGET_TYPE is the component float type. */
3013 init_complex_type (struct objfile
*objfile
,
3014 const char *name
, struct type
*target_type
)
3018 t
= init_type (objfile
, TYPE_CODE_COMPLEX
,
3019 2 * TYPE_LENGTH (target_type
) * TARGET_CHAR_BIT
, name
);
3020 TYPE_TARGET_TYPE (t
) = target_type
;
3024 /* Allocate a TYPE_CODE_PTR type structure associated with OBJFILE.
3025 BIT is the pointer type size in bits. NAME is the type name.
3026 TARGET_TYPE is the pointer target type. Always sets the pointer type's
3027 TYPE_UNSIGNED flag. */
3030 init_pointer_type (struct objfile
*objfile
,
3031 int bit
, const char *name
, struct type
*target_type
)
3035 t
= init_type (objfile
, TYPE_CODE_PTR
, bit
, name
);
3036 TYPE_TARGET_TYPE (t
) = target_type
;
3037 TYPE_UNSIGNED (t
) = 1;
3041 /* See gdbtypes.h. */
3044 type_raw_align (struct type
*type
)
3046 if (type
->align_log2
!= 0)
3047 return 1 << (type
->align_log2
- 1);
3051 /* See gdbtypes.h. */
3054 type_align (struct type
*type
)
3056 /* Check alignment provided in the debug information. */
3057 unsigned raw_align
= type_raw_align (type
);
3061 /* Allow the architecture to provide an alignment. */
3062 struct gdbarch
*arch
= get_type_arch (type
);
3063 ULONGEST align
= gdbarch_type_align (arch
, type
);
3067 switch (TYPE_CODE (type
))
3070 case TYPE_CODE_FUNC
:
3071 case TYPE_CODE_FLAGS
:
3073 case TYPE_CODE_RANGE
:
3075 case TYPE_CODE_ENUM
:
3077 case TYPE_CODE_RVALUE_REF
:
3078 case TYPE_CODE_CHAR
:
3079 case TYPE_CODE_BOOL
:
3080 case TYPE_CODE_DECFLOAT
:
3081 case TYPE_CODE_METHODPTR
:
3082 case TYPE_CODE_MEMBERPTR
:
3083 align
= type_length_units (check_typedef (type
));
3086 case TYPE_CODE_ARRAY
:
3087 case TYPE_CODE_COMPLEX
:
3088 case TYPE_CODE_TYPEDEF
:
3089 align
= type_align (TYPE_TARGET_TYPE (type
));
3092 case TYPE_CODE_STRUCT
:
3093 case TYPE_CODE_UNION
:
3095 int number_of_non_static_fields
= 0;
3096 for (unsigned i
= 0; i
< TYPE_NFIELDS (type
); ++i
)
3098 if (!field_is_static (&TYPE_FIELD (type
, i
)))
3100 number_of_non_static_fields
++;
3101 ULONGEST f_align
= type_align (TYPE_FIELD_TYPE (type
, i
));
3104 /* Don't pretend we know something we don't. */
3108 if (f_align
> align
)
3112 /* A struct with no fields, or with only static fields has an
3114 if (number_of_non_static_fields
== 0)
3120 case TYPE_CODE_STRING
:
3121 /* Not sure what to do here, and these can't appear in C or C++
3125 case TYPE_CODE_VOID
:
3129 case TYPE_CODE_ERROR
:
3130 case TYPE_CODE_METHOD
:
3135 if ((align
& (align
- 1)) != 0)
3137 /* Not a power of 2, so pass. */
3144 /* See gdbtypes.h. */
3147 set_type_align (struct type
*type
, ULONGEST align
)
3149 /* Must be a power of 2. Zero is ok. */
3150 gdb_assert ((align
& (align
- 1)) == 0);
3152 unsigned result
= 0;
3159 if (result
>= (1 << TYPE_ALIGN_BITS
))
3162 type
->align_log2
= result
;
3167 /* Queries on types. */
3170 can_dereference (struct type
*t
)
3172 /* FIXME: Should we return true for references as well as
3174 t
= check_typedef (t
);
3177 && TYPE_CODE (t
) == TYPE_CODE_PTR
3178 && TYPE_CODE (TYPE_TARGET_TYPE (t
)) != TYPE_CODE_VOID
);
3182 is_integral_type (struct type
*t
)
3184 t
= check_typedef (t
);
3187 && ((TYPE_CODE (t
) == TYPE_CODE_INT
)
3188 || (TYPE_CODE (t
) == TYPE_CODE_ENUM
)
3189 || (TYPE_CODE (t
) == TYPE_CODE_FLAGS
)
3190 || (TYPE_CODE (t
) == TYPE_CODE_CHAR
)
3191 || (TYPE_CODE (t
) == TYPE_CODE_RANGE
)
3192 || (TYPE_CODE (t
) == TYPE_CODE_BOOL
)));
3196 is_floating_type (struct type
*t
)
3198 t
= check_typedef (t
);
3201 && ((TYPE_CODE (t
) == TYPE_CODE_FLT
)
3202 || (TYPE_CODE (t
) == TYPE_CODE_DECFLOAT
)));
3205 /* Return true if TYPE is scalar. */
3208 is_scalar_type (struct type
*type
)
3210 type
= check_typedef (type
);
3212 switch (TYPE_CODE (type
))
3214 case TYPE_CODE_ARRAY
:
3215 case TYPE_CODE_STRUCT
:
3216 case TYPE_CODE_UNION
:
3218 case TYPE_CODE_STRING
:
3225 /* Return true if T is scalar, or a composite type which in practice has
3226 the memory layout of a scalar type. E.g., an array or struct with only
3227 one scalar element inside it, or a union with only scalar elements. */
3230 is_scalar_type_recursive (struct type
*t
)
3232 t
= check_typedef (t
);
3234 if (is_scalar_type (t
))
3236 /* Are we dealing with an array or string of known dimensions? */
3237 else if ((TYPE_CODE (t
) == TYPE_CODE_ARRAY
3238 || TYPE_CODE (t
) == TYPE_CODE_STRING
) && TYPE_NFIELDS (t
) == 1
3239 && TYPE_CODE (TYPE_INDEX_TYPE (t
)) == TYPE_CODE_RANGE
)
3241 LONGEST low_bound
, high_bound
;
3242 struct type
*elt_type
= check_typedef (TYPE_TARGET_TYPE (t
));
3244 get_discrete_bounds (TYPE_INDEX_TYPE (t
), &low_bound
, &high_bound
);
3246 return high_bound
== low_bound
&& is_scalar_type_recursive (elt_type
);
3248 /* Are we dealing with a struct with one element? */
3249 else if (TYPE_CODE (t
) == TYPE_CODE_STRUCT
&& TYPE_NFIELDS (t
) == 1)
3250 return is_scalar_type_recursive (TYPE_FIELD_TYPE (t
, 0));
3251 else if (TYPE_CODE (t
) == TYPE_CODE_UNION
)
3253 int i
, n
= TYPE_NFIELDS (t
);
3255 /* If all elements of the union are scalar, then the union is scalar. */
3256 for (i
= 0; i
< n
; i
++)
3257 if (!is_scalar_type_recursive (TYPE_FIELD_TYPE (t
, i
)))
3266 /* Return true is T is a class or a union. False otherwise. */
3269 class_or_union_p (const struct type
*t
)
3271 return (TYPE_CODE (t
) == TYPE_CODE_STRUCT
3272 || TYPE_CODE (t
) == TYPE_CODE_UNION
);
3275 /* A helper function which returns true if types A and B represent the
3276 "same" class type. This is true if the types have the same main
3277 type, or the same name. */
3280 class_types_same_p (const struct type
*a
, const struct type
*b
)
3282 return (TYPE_MAIN_TYPE (a
) == TYPE_MAIN_TYPE (b
)
3283 || (TYPE_NAME (a
) && TYPE_NAME (b
)
3284 && !strcmp (TYPE_NAME (a
), TYPE_NAME (b
))));
3287 /* If BASE is an ancestor of DCLASS return the distance between them.
3288 otherwise return -1;
3292 class B: public A {};
3293 class C: public B {};
3296 distance_to_ancestor (A, A, 0) = 0
3297 distance_to_ancestor (A, B, 0) = 1
3298 distance_to_ancestor (A, C, 0) = 2
3299 distance_to_ancestor (A, D, 0) = 3
3301 If PUBLIC is 1 then only public ancestors are considered,
3302 and the function returns the distance only if BASE is a public ancestor
3306 distance_to_ancestor (A, D, 1) = -1. */
3309 distance_to_ancestor (struct type
*base
, struct type
*dclass
, int is_public
)
3314 base
= check_typedef (base
);
3315 dclass
= check_typedef (dclass
);
3317 if (class_types_same_p (base
, dclass
))
3320 for (i
= 0; i
< TYPE_N_BASECLASSES (dclass
); i
++)
3322 if (is_public
&& ! BASETYPE_VIA_PUBLIC (dclass
, i
))
3325 d
= distance_to_ancestor (base
, TYPE_BASECLASS (dclass
, i
), is_public
);
3333 /* Check whether BASE is an ancestor or base class or DCLASS
3334 Return 1 if so, and 0 if not.
3335 Note: If BASE and DCLASS are of the same type, this function
3336 will return 1. So for some class A, is_ancestor (A, A) will
3340 is_ancestor (struct type
*base
, struct type
*dclass
)
3342 return distance_to_ancestor (base
, dclass
, 0) >= 0;
3345 /* Like is_ancestor, but only returns true when BASE is a public
3346 ancestor of DCLASS. */
3349 is_public_ancestor (struct type
*base
, struct type
*dclass
)
3351 return distance_to_ancestor (base
, dclass
, 1) >= 0;
3354 /* A helper function for is_unique_ancestor. */
3357 is_unique_ancestor_worker (struct type
*base
, struct type
*dclass
,
3359 const gdb_byte
*valaddr
, int embedded_offset
,
3360 CORE_ADDR address
, struct value
*val
)
3364 base
= check_typedef (base
);
3365 dclass
= check_typedef (dclass
);
3367 for (i
= 0; i
< TYPE_N_BASECLASSES (dclass
) && count
< 2; ++i
)
3372 iter
= check_typedef (TYPE_BASECLASS (dclass
, i
));
3374 this_offset
= baseclass_offset (dclass
, i
, valaddr
, embedded_offset
,
3377 if (class_types_same_p (base
, iter
))
3379 /* If this is the first subclass, set *OFFSET and set count
3380 to 1. Otherwise, if this is at the same offset as
3381 previous instances, do nothing. Otherwise, increment
3385 *offset
= this_offset
;
3388 else if (this_offset
== *offset
)
3396 count
+= is_unique_ancestor_worker (base
, iter
, offset
,
3398 embedded_offset
+ this_offset
,
3405 /* Like is_ancestor, but only returns true if BASE is a unique base
3406 class of the type of VAL. */
3409 is_unique_ancestor (struct type
*base
, struct value
*val
)
3413 return is_unique_ancestor_worker (base
, value_type (val
), &offset
,
3414 value_contents_for_printing (val
),
3415 value_embedded_offset (val
),
3416 value_address (val
), val
) == 1;
3420 /* Overload resolution. */
3422 /* Return the sum of the rank of A with the rank of B. */
3425 sum_ranks (struct rank a
, struct rank b
)
3428 c
.rank
= a
.rank
+ b
.rank
;
3429 c
.subrank
= a
.subrank
+ b
.subrank
;
3433 /* Compare rank A and B and return:
3435 1 if a is better than b
3436 -1 if b is better than a. */
3439 compare_ranks (struct rank a
, struct rank b
)
3441 if (a
.rank
== b
.rank
)
3443 if (a
.subrank
== b
.subrank
)
3445 if (a
.subrank
< b
.subrank
)
3447 if (a
.subrank
> b
.subrank
)
3451 if (a
.rank
< b
.rank
)
3454 /* a.rank > b.rank */
3458 /* Functions for overload resolution begin here. */
3460 /* Compare two badness vectors A and B and return the result.
3461 0 => A and B are identical
3462 1 => A and B are incomparable
3463 2 => A is better than B
3464 3 => A is worse than B */
3467 compare_badness (const badness_vector
&a
, const badness_vector
&b
)
3471 short found_pos
= 0; /* any positives in c? */
3472 short found_neg
= 0; /* any negatives in c? */
3474 /* differing sizes => incomparable */
3475 if (a
.size () != b
.size ())
3478 /* Subtract b from a */
3479 for (i
= 0; i
< a
.size (); i
++)
3481 tmp
= compare_ranks (b
[i
], a
[i
]);
3491 return 1; /* incomparable */
3493 return 3; /* A > B */
3499 return 2; /* A < B */
3501 return 0; /* A == B */
3505 /* Rank a function by comparing its parameter types (PARMS), to the
3506 types of an argument list (ARGS). Return the badness vector. This
3507 has ARGS.size() + 1 entries. */
3510 rank_function (gdb::array_view
<type
*> parms
,
3511 gdb::array_view
<value
*> args
)
3513 /* add 1 for the length-match rank. */
3515 bv
.reserve (1 + args
.size ());
3517 /* First compare the lengths of the supplied lists.
3518 If there is a mismatch, set it to a high value. */
3520 /* pai/1997-06-03 FIXME: when we have debug info about default
3521 arguments and ellipsis parameter lists, we should consider those
3522 and rank the length-match more finely. */
3524 bv
.push_back ((args
.size () != parms
.size ())
3525 ? LENGTH_MISMATCH_BADNESS
3526 : EXACT_MATCH_BADNESS
);
3528 /* Now rank all the parameters of the candidate function. */
3529 size_t min_len
= std::min (parms
.size (), args
.size ());
3531 for (size_t i
= 0; i
< min_len
; i
++)
3532 bv
.push_back (rank_one_type (parms
[i
], value_type (args
[i
]),
3535 /* If more arguments than parameters, add dummy entries. */
3536 for (size_t i
= min_len
; i
< args
.size (); i
++)
3537 bv
.push_back (TOO_FEW_PARAMS_BADNESS
);
3542 /* Compare the names of two integer types, assuming that any sign
3543 qualifiers have been checked already. We do it this way because
3544 there may be an "int" in the name of one of the types. */
3547 integer_types_same_name_p (const char *first
, const char *second
)
3549 int first_p
, second_p
;
3551 /* If both are shorts, return 1; if neither is a short, keep
3553 first_p
= (strstr (first
, "short") != NULL
);
3554 second_p
= (strstr (second
, "short") != NULL
);
3555 if (first_p
&& second_p
)
3557 if (first_p
|| second_p
)
3560 /* Likewise for long. */
3561 first_p
= (strstr (first
, "long") != NULL
);
3562 second_p
= (strstr (second
, "long") != NULL
);
3563 if (first_p
&& second_p
)
3565 if (first_p
|| second_p
)
3568 /* Likewise for char. */
3569 first_p
= (strstr (first
, "char") != NULL
);
3570 second_p
= (strstr (second
, "char") != NULL
);
3571 if (first_p
&& second_p
)
3573 if (first_p
|| second_p
)
3576 /* They must both be ints. */
3580 /* Compares type A to type B. Returns true if they represent the same
3581 type, false otherwise. */
3584 types_equal (struct type
*a
, struct type
*b
)
3586 /* Identical type pointers. */
3587 /* However, this still doesn't catch all cases of same type for b
3588 and a. The reason is that builtin types are different from
3589 the same ones constructed from the object. */
3593 /* Resolve typedefs */
3594 if (TYPE_CODE (a
) == TYPE_CODE_TYPEDEF
)
3595 a
= check_typedef (a
);
3596 if (TYPE_CODE (b
) == TYPE_CODE_TYPEDEF
)
3597 b
= check_typedef (b
);
3599 /* If after resolving typedefs a and b are not of the same type
3600 code then they are not equal. */
3601 if (TYPE_CODE (a
) != TYPE_CODE (b
))
3604 /* If a and b are both pointers types or both reference types then
3605 they are equal of the same type iff the objects they refer to are
3606 of the same type. */
3607 if (TYPE_CODE (a
) == TYPE_CODE_PTR
3608 || TYPE_CODE (a
) == TYPE_CODE_REF
)
3609 return types_equal (TYPE_TARGET_TYPE (a
),
3610 TYPE_TARGET_TYPE (b
));
3612 /* Well, damnit, if the names are exactly the same, I'll say they
3613 are exactly the same. This happens when we generate method
3614 stubs. The types won't point to the same address, but they
3615 really are the same. */
3617 if (TYPE_NAME (a
) && TYPE_NAME (b
)
3618 && strcmp (TYPE_NAME (a
), TYPE_NAME (b
)) == 0)
3621 /* Check if identical after resolving typedefs. */
3625 /* Two function types are equal if their argument and return types
3627 if (TYPE_CODE (a
) == TYPE_CODE_FUNC
)
3631 if (TYPE_NFIELDS (a
) != TYPE_NFIELDS (b
))
3634 if (!types_equal (TYPE_TARGET_TYPE (a
), TYPE_TARGET_TYPE (b
)))
3637 for (i
= 0; i
< TYPE_NFIELDS (a
); ++i
)
3638 if (!types_equal (TYPE_FIELD_TYPE (a
, i
), TYPE_FIELD_TYPE (b
, i
)))
3647 /* Deep comparison of types. */
3649 /* An entry in the type-equality bcache. */
3651 struct type_equality_entry
3653 type_equality_entry (struct type
*t1
, struct type
*t2
)
3659 struct type
*type1
, *type2
;
3662 /* A helper function to compare two strings. Returns true if they are
3663 the same, false otherwise. Handles NULLs properly. */
3666 compare_maybe_null_strings (const char *s
, const char *t
)
3668 if (s
== NULL
|| t
== NULL
)
3670 return strcmp (s
, t
) == 0;
3673 /* A helper function for check_types_worklist that checks two types for
3674 "deep" equality. Returns true if the types are considered the
3675 same, false otherwise. */
3678 check_types_equal (struct type
*type1
, struct type
*type2
,
3679 std::vector
<type_equality_entry
> *worklist
)
3681 type1
= check_typedef (type1
);
3682 type2
= check_typedef (type2
);
3687 if (TYPE_CODE (type1
) != TYPE_CODE (type2
)
3688 || TYPE_LENGTH (type1
) != TYPE_LENGTH (type2
)
3689 || TYPE_UNSIGNED (type1
) != TYPE_UNSIGNED (type2
)
3690 || TYPE_NOSIGN (type1
) != TYPE_NOSIGN (type2
)
3691 || TYPE_ENDIANITY_NOT_DEFAULT (type1
) != TYPE_ENDIANITY_NOT_DEFAULT (type2
)
3692 || TYPE_VARARGS (type1
) != TYPE_VARARGS (type2
)
3693 || TYPE_VECTOR (type1
) != TYPE_VECTOR (type2
)
3694 || TYPE_NOTTEXT (type1
) != TYPE_NOTTEXT (type2
)
3695 || TYPE_INSTANCE_FLAGS (type1
) != TYPE_INSTANCE_FLAGS (type2
)
3696 || TYPE_NFIELDS (type1
) != TYPE_NFIELDS (type2
))
3699 if (!compare_maybe_null_strings (TYPE_NAME (type1
), TYPE_NAME (type2
)))
3701 if (!compare_maybe_null_strings (TYPE_NAME (type1
), TYPE_NAME (type2
)))
3704 if (TYPE_CODE (type1
) == TYPE_CODE_RANGE
)
3706 if (*TYPE_RANGE_DATA (type1
) != *TYPE_RANGE_DATA (type2
))
3713 for (i
= 0; i
< TYPE_NFIELDS (type1
); ++i
)
3715 const struct field
*field1
= &TYPE_FIELD (type1
, i
);
3716 const struct field
*field2
= &TYPE_FIELD (type2
, i
);
3718 if (FIELD_ARTIFICIAL (*field1
) != FIELD_ARTIFICIAL (*field2
)
3719 || FIELD_BITSIZE (*field1
) != FIELD_BITSIZE (*field2
)
3720 || FIELD_LOC_KIND (*field1
) != FIELD_LOC_KIND (*field2
))
3722 if (!compare_maybe_null_strings (FIELD_NAME (*field1
),
3723 FIELD_NAME (*field2
)))
3725 switch (FIELD_LOC_KIND (*field1
))
3727 case FIELD_LOC_KIND_BITPOS
:
3728 if (FIELD_BITPOS (*field1
) != FIELD_BITPOS (*field2
))
3731 case FIELD_LOC_KIND_ENUMVAL
:
3732 if (FIELD_ENUMVAL (*field1
) != FIELD_ENUMVAL (*field2
))
3735 case FIELD_LOC_KIND_PHYSADDR
:
3736 if (FIELD_STATIC_PHYSADDR (*field1
)
3737 != FIELD_STATIC_PHYSADDR (*field2
))
3740 case FIELD_LOC_KIND_PHYSNAME
:
3741 if (!compare_maybe_null_strings (FIELD_STATIC_PHYSNAME (*field1
),
3742 FIELD_STATIC_PHYSNAME (*field2
)))
3745 case FIELD_LOC_KIND_DWARF_BLOCK
:
3747 struct dwarf2_locexpr_baton
*block1
, *block2
;
3749 block1
= FIELD_DWARF_BLOCK (*field1
);
3750 block2
= FIELD_DWARF_BLOCK (*field2
);
3751 if (block1
->per_cu
!= block2
->per_cu
3752 || block1
->size
!= block2
->size
3753 || memcmp (block1
->data
, block2
->data
, block1
->size
) != 0)
3758 internal_error (__FILE__
, __LINE__
, _("Unsupported field kind "
3759 "%d by check_types_equal"),
3760 FIELD_LOC_KIND (*field1
));
3763 worklist
->emplace_back (FIELD_TYPE (*field1
), FIELD_TYPE (*field2
));
3767 if (TYPE_TARGET_TYPE (type1
) != NULL
)
3769 if (TYPE_TARGET_TYPE (type2
) == NULL
)
3772 worklist
->emplace_back (TYPE_TARGET_TYPE (type1
),
3773 TYPE_TARGET_TYPE (type2
));
3775 else if (TYPE_TARGET_TYPE (type2
) != NULL
)
3781 /* Check types on a worklist for equality. Returns false if any pair
3782 is not equal, true if they are all considered equal. */
3785 check_types_worklist (std::vector
<type_equality_entry
> *worklist
,
3786 struct bcache
*cache
)
3788 while (!worklist
->empty ())
3792 struct type_equality_entry entry
= std::move (worklist
->back ());
3793 worklist
->pop_back ();
3795 /* If the type pair has already been visited, we know it is
3797 cache
->insert (&entry
, sizeof (entry
), &added
);
3801 if (!check_types_equal (entry
.type1
, entry
.type2
, worklist
))
3808 /* Return true if types TYPE1 and TYPE2 are equal, as determined by a
3809 "deep comparison". Otherwise return false. */
3812 types_deeply_equal (struct type
*type1
, struct type
*type2
)
3814 std::vector
<type_equality_entry
> worklist
;
3816 gdb_assert (type1
!= NULL
&& type2
!= NULL
);
3818 /* Early exit for the simple case. */
3822 struct bcache
cache (nullptr, nullptr);
3823 worklist
.emplace_back (type1
, type2
);
3824 return check_types_worklist (&worklist
, &cache
);
3827 /* Allocated status of type TYPE. Return zero if type TYPE is allocated.
3828 Otherwise return one. */
3831 type_not_allocated (const struct type
*type
)
3833 struct dynamic_prop
*prop
= TYPE_ALLOCATED_PROP (type
);
3835 return (prop
&& TYPE_DYN_PROP_KIND (prop
) == PROP_CONST
3836 && !TYPE_DYN_PROP_ADDR (prop
));
3839 /* Associated status of type TYPE. Return zero if type TYPE is associated.
3840 Otherwise return one. */
3843 type_not_associated (const struct type
*type
)
3845 struct dynamic_prop
*prop
= TYPE_ASSOCIATED_PROP (type
);
3847 return (prop
&& TYPE_DYN_PROP_KIND (prop
) == PROP_CONST
3848 && !TYPE_DYN_PROP_ADDR (prop
));
3851 /* rank_one_type helper for when PARM's type code is TYPE_CODE_PTR. */
3854 rank_one_type_parm_ptr (struct type
*parm
, struct type
*arg
, struct value
*value
)
3856 struct rank rank
= {0,0};
3858 switch (TYPE_CODE (arg
))
3862 /* Allowed pointer conversions are:
3863 (a) pointer to void-pointer conversion. */
3864 if (TYPE_CODE (TYPE_TARGET_TYPE (parm
)) == TYPE_CODE_VOID
)
3865 return VOID_PTR_CONVERSION_BADNESS
;
3867 /* (b) pointer to ancestor-pointer conversion. */
3868 rank
.subrank
= distance_to_ancestor (TYPE_TARGET_TYPE (parm
),
3869 TYPE_TARGET_TYPE (arg
),
3871 if (rank
.subrank
>= 0)
3872 return sum_ranks (BASE_PTR_CONVERSION_BADNESS
, rank
);
3874 return INCOMPATIBLE_TYPE_BADNESS
;
3875 case TYPE_CODE_ARRAY
:
3877 struct type
*t1
= TYPE_TARGET_TYPE (parm
);
3878 struct type
*t2
= TYPE_TARGET_TYPE (arg
);
3880 if (types_equal (t1
, t2
))
3882 /* Make sure they are CV equal. */
3883 if (TYPE_CONST (t1
) != TYPE_CONST (t2
))
3884 rank
.subrank
|= CV_CONVERSION_CONST
;
3885 if (TYPE_VOLATILE (t1
) != TYPE_VOLATILE (t2
))
3886 rank
.subrank
|= CV_CONVERSION_VOLATILE
;
3887 if (rank
.subrank
!= 0)
3888 return sum_ranks (CV_CONVERSION_BADNESS
, rank
);
3889 return EXACT_MATCH_BADNESS
;
3891 return INCOMPATIBLE_TYPE_BADNESS
;
3893 case TYPE_CODE_FUNC
:
3894 return rank_one_type (TYPE_TARGET_TYPE (parm
), arg
, NULL
);
3896 if (value
!= NULL
&& TYPE_CODE (value_type (value
)) == TYPE_CODE_INT
)
3898 if (value_as_long (value
) == 0)
3900 /* Null pointer conversion: allow it to be cast to a pointer.
3901 [4.10.1 of C++ standard draft n3290] */
3902 return NULL_POINTER_CONVERSION_BADNESS
;
3906 /* If type checking is disabled, allow the conversion. */
3907 if (!strict_type_checking
)
3908 return NS_INTEGER_POINTER_CONVERSION_BADNESS
;
3912 case TYPE_CODE_ENUM
:
3913 case TYPE_CODE_FLAGS
:
3914 case TYPE_CODE_CHAR
:
3915 case TYPE_CODE_RANGE
:
3916 case TYPE_CODE_BOOL
:
3918 return INCOMPATIBLE_TYPE_BADNESS
;
3922 /* rank_one_type helper for when PARM's type code is TYPE_CODE_ARRAY. */
3925 rank_one_type_parm_array (struct type
*parm
, struct type
*arg
, struct value
*value
)
3927 switch (TYPE_CODE (arg
))
3930 case TYPE_CODE_ARRAY
:
3931 return rank_one_type (TYPE_TARGET_TYPE (parm
),
3932 TYPE_TARGET_TYPE (arg
), NULL
);
3934 return INCOMPATIBLE_TYPE_BADNESS
;
3938 /* rank_one_type helper for when PARM's type code is TYPE_CODE_FUNC. */
3941 rank_one_type_parm_func (struct type
*parm
, struct type
*arg
, struct value
*value
)
3943 switch (TYPE_CODE (arg
))
3945 case TYPE_CODE_PTR
: /* funcptr -> func */
3946 return rank_one_type (parm
, TYPE_TARGET_TYPE (arg
), NULL
);
3948 return INCOMPATIBLE_TYPE_BADNESS
;
3952 /* rank_one_type helper for when PARM's type code is TYPE_CODE_INT. */
3955 rank_one_type_parm_int (struct type
*parm
, struct type
*arg
, struct value
*value
)
3957 switch (TYPE_CODE (arg
))
3960 if (TYPE_LENGTH (arg
) == TYPE_LENGTH (parm
))
3962 /* Deal with signed, unsigned, and plain chars and
3963 signed and unsigned ints. */
3964 if (TYPE_NOSIGN (parm
))
3966 /* This case only for character types. */
3967 if (TYPE_NOSIGN (arg
))
3968 return EXACT_MATCH_BADNESS
; /* plain char -> plain char */
3969 else /* signed/unsigned char -> plain char */
3970 return INTEGER_CONVERSION_BADNESS
;
3972 else if (TYPE_UNSIGNED (parm
))
3974 if (TYPE_UNSIGNED (arg
))
3976 /* unsigned int -> unsigned int, or
3977 unsigned long -> unsigned long */
3978 if (integer_types_same_name_p (TYPE_NAME (parm
),
3980 return EXACT_MATCH_BADNESS
;
3981 else if (integer_types_same_name_p (TYPE_NAME (arg
),
3983 && integer_types_same_name_p (TYPE_NAME (parm
),
3985 /* unsigned int -> unsigned long */
3986 return INTEGER_PROMOTION_BADNESS
;
3988 /* unsigned long -> unsigned int */
3989 return INTEGER_CONVERSION_BADNESS
;
3993 if (integer_types_same_name_p (TYPE_NAME (arg
),
3995 && integer_types_same_name_p (TYPE_NAME (parm
),
3997 /* signed long -> unsigned int */
3998 return INTEGER_CONVERSION_BADNESS
;
4000 /* signed int/long -> unsigned int/long */
4001 return INTEGER_CONVERSION_BADNESS
;
4004 else if (!TYPE_NOSIGN (arg
) && !TYPE_UNSIGNED (arg
))
4006 if (integer_types_same_name_p (TYPE_NAME (parm
),
4008 return EXACT_MATCH_BADNESS
;
4009 else if (integer_types_same_name_p (TYPE_NAME (arg
),
4011 && integer_types_same_name_p (TYPE_NAME (parm
),
4013 return INTEGER_PROMOTION_BADNESS
;
4015 return INTEGER_CONVERSION_BADNESS
;
4018 return INTEGER_CONVERSION_BADNESS
;
4020 else if (TYPE_LENGTH (arg
) < TYPE_LENGTH (parm
))
4021 return INTEGER_PROMOTION_BADNESS
;
4023 return INTEGER_CONVERSION_BADNESS
;
4024 case TYPE_CODE_ENUM
:
4025 case TYPE_CODE_FLAGS
:
4026 case TYPE_CODE_CHAR
:
4027 case TYPE_CODE_RANGE
:
4028 case TYPE_CODE_BOOL
:
4029 if (TYPE_DECLARED_CLASS (arg
))
4030 return INCOMPATIBLE_TYPE_BADNESS
;
4031 return INTEGER_PROMOTION_BADNESS
;
4033 return INT_FLOAT_CONVERSION_BADNESS
;
4035 return NS_POINTER_CONVERSION_BADNESS
;
4037 return INCOMPATIBLE_TYPE_BADNESS
;
4041 /* rank_one_type helper for when PARM's type code is TYPE_CODE_ENUM. */
4044 rank_one_type_parm_enum (struct type
*parm
, struct type
*arg
, struct value
*value
)
4046 switch (TYPE_CODE (arg
))
4049 case TYPE_CODE_CHAR
:
4050 case TYPE_CODE_RANGE
:
4051 case TYPE_CODE_BOOL
:
4052 case TYPE_CODE_ENUM
:
4053 if (TYPE_DECLARED_CLASS (parm
) || TYPE_DECLARED_CLASS (arg
))
4054 return INCOMPATIBLE_TYPE_BADNESS
;
4055 return INTEGER_CONVERSION_BADNESS
;
4057 return INT_FLOAT_CONVERSION_BADNESS
;
4059 return INCOMPATIBLE_TYPE_BADNESS
;
4063 /* rank_one_type helper for when PARM's type code is TYPE_CODE_CHAR. */
4066 rank_one_type_parm_char (struct type
*parm
, struct type
*arg
, struct value
*value
)
4068 switch (TYPE_CODE (arg
))
4070 case TYPE_CODE_RANGE
:
4071 case TYPE_CODE_BOOL
:
4072 case TYPE_CODE_ENUM
:
4073 if (TYPE_DECLARED_CLASS (arg
))
4074 return INCOMPATIBLE_TYPE_BADNESS
;
4075 return INTEGER_CONVERSION_BADNESS
;
4077 return INT_FLOAT_CONVERSION_BADNESS
;
4079 if (TYPE_LENGTH (arg
) > TYPE_LENGTH (parm
))
4080 return INTEGER_CONVERSION_BADNESS
;
4081 else if (TYPE_LENGTH (arg
) < TYPE_LENGTH (parm
))
4082 return INTEGER_PROMOTION_BADNESS
;
4084 case TYPE_CODE_CHAR
:
4085 /* Deal with signed, unsigned, and plain chars for C++ and
4086 with int cases falling through from previous case. */
4087 if (TYPE_NOSIGN (parm
))
4089 if (TYPE_NOSIGN (arg
))
4090 return EXACT_MATCH_BADNESS
;
4092 return INTEGER_CONVERSION_BADNESS
;
4094 else if (TYPE_UNSIGNED (parm
))
4096 if (TYPE_UNSIGNED (arg
))
4097 return EXACT_MATCH_BADNESS
;
4099 return INTEGER_PROMOTION_BADNESS
;
4101 else if (!TYPE_NOSIGN (arg
) && !TYPE_UNSIGNED (arg
))
4102 return EXACT_MATCH_BADNESS
;
4104 return INTEGER_CONVERSION_BADNESS
;
4106 return INCOMPATIBLE_TYPE_BADNESS
;
4110 /* rank_one_type helper for when PARM's type code is TYPE_CODE_RANGE. */
4113 rank_one_type_parm_range (struct type
*parm
, struct type
*arg
, struct value
*value
)
4115 switch (TYPE_CODE (arg
))
4118 case TYPE_CODE_CHAR
:
4119 case TYPE_CODE_RANGE
:
4120 case TYPE_CODE_BOOL
:
4121 case TYPE_CODE_ENUM
:
4122 return INTEGER_CONVERSION_BADNESS
;
4124 return INT_FLOAT_CONVERSION_BADNESS
;
4126 return INCOMPATIBLE_TYPE_BADNESS
;
4130 /* rank_one_type helper for when PARM's type code is TYPE_CODE_BOOL. */
4133 rank_one_type_parm_bool (struct type
*parm
, struct type
*arg
, struct value
*value
)
4135 switch (TYPE_CODE (arg
))
4137 /* n3290 draft, section 4.12.1 (conv.bool):
4139 "A prvalue of arithmetic, unscoped enumeration, pointer, or
4140 pointer to member type can be converted to a prvalue of type
4141 bool. A zero value, null pointer value, or null member pointer
4142 value is converted to false; any other value is converted to
4143 true. A prvalue of type std::nullptr_t can be converted to a
4144 prvalue of type bool; the resulting value is false." */
4146 case TYPE_CODE_CHAR
:
4147 case TYPE_CODE_ENUM
:
4149 case TYPE_CODE_MEMBERPTR
:
4151 return BOOL_CONVERSION_BADNESS
;
4152 case TYPE_CODE_RANGE
:
4153 return INCOMPATIBLE_TYPE_BADNESS
;
4154 case TYPE_CODE_BOOL
:
4155 return EXACT_MATCH_BADNESS
;
4157 return INCOMPATIBLE_TYPE_BADNESS
;
4161 /* rank_one_type helper for when PARM's type code is TYPE_CODE_FLOAT. */
4164 rank_one_type_parm_float (struct type
*parm
, struct type
*arg
, struct value
*value
)
4166 switch (TYPE_CODE (arg
))
4169 if (TYPE_LENGTH (arg
) < TYPE_LENGTH (parm
))
4170 return FLOAT_PROMOTION_BADNESS
;
4171 else if (TYPE_LENGTH (arg
) == TYPE_LENGTH (parm
))
4172 return EXACT_MATCH_BADNESS
;
4174 return FLOAT_CONVERSION_BADNESS
;
4176 case TYPE_CODE_BOOL
:
4177 case TYPE_CODE_ENUM
:
4178 case TYPE_CODE_RANGE
:
4179 case TYPE_CODE_CHAR
:
4180 return INT_FLOAT_CONVERSION_BADNESS
;
4182 return INCOMPATIBLE_TYPE_BADNESS
;
4186 /* rank_one_type helper for when PARM's type code is TYPE_CODE_COMPLEX. */
4189 rank_one_type_parm_complex (struct type
*parm
, struct type
*arg
, struct value
*value
)
4191 switch (TYPE_CODE (arg
))
4192 { /* Strictly not needed for C++, but... */
4194 return FLOAT_PROMOTION_BADNESS
;
4195 case TYPE_CODE_COMPLEX
:
4196 return EXACT_MATCH_BADNESS
;
4198 return INCOMPATIBLE_TYPE_BADNESS
;
4202 /* rank_one_type helper for when PARM's type code is TYPE_CODE_STRUCT. */
4205 rank_one_type_parm_struct (struct type
*parm
, struct type
*arg
, struct value
*value
)
4207 struct rank rank
= {0, 0};
4209 switch (TYPE_CODE (arg
))
4211 case TYPE_CODE_STRUCT
:
4212 /* Check for derivation */
4213 rank
.subrank
= distance_to_ancestor (parm
, arg
, 0);
4214 if (rank
.subrank
>= 0)
4215 return sum_ranks (BASE_CONVERSION_BADNESS
, rank
);
4218 return INCOMPATIBLE_TYPE_BADNESS
;
4222 /* rank_one_type helper for when PARM's type code is TYPE_CODE_SET. */
4225 rank_one_type_parm_set (struct type
*parm
, struct type
*arg
, struct value
*value
)
4227 switch (TYPE_CODE (arg
))
4231 return rank_one_type (TYPE_FIELD_TYPE (parm
, 0),
4232 TYPE_FIELD_TYPE (arg
, 0), NULL
);
4234 return INCOMPATIBLE_TYPE_BADNESS
;
4238 /* Compare one type (PARM) for compatibility with another (ARG).
4239 * PARM is intended to be the parameter type of a function; and
4240 * ARG is the supplied argument's type. This function tests if
4241 * the latter can be converted to the former.
4242 * VALUE is the argument's value or NULL if none (or called recursively)
4244 * Return 0 if they are identical types;
4245 * Otherwise, return an integer which corresponds to how compatible
4246 * PARM is to ARG. The higher the return value, the worse the match.
4247 * Generally the "bad" conversions are all uniformly assigned a 100. */
4250 rank_one_type (struct type
*parm
, struct type
*arg
, struct value
*value
)
4252 struct rank rank
= {0,0};
4254 /* Resolve typedefs */
4255 if (TYPE_CODE (parm
) == TYPE_CODE_TYPEDEF
)
4256 parm
= check_typedef (parm
);
4257 if (TYPE_CODE (arg
) == TYPE_CODE_TYPEDEF
)
4258 arg
= check_typedef (arg
);
4260 if (TYPE_IS_REFERENCE (parm
) && value
!= NULL
)
4262 if (VALUE_LVAL (value
) == not_lval
)
4264 /* Rvalues should preferably bind to rvalue references or const
4265 lvalue references. */
4266 if (TYPE_CODE (parm
) == TYPE_CODE_RVALUE_REF
)
4267 rank
.subrank
= REFERENCE_CONVERSION_RVALUE
;
4268 else if (TYPE_CONST (TYPE_TARGET_TYPE (parm
)))
4269 rank
.subrank
= REFERENCE_CONVERSION_CONST_LVALUE
;
4271 return INCOMPATIBLE_TYPE_BADNESS
;
4272 return sum_ranks (rank
, REFERENCE_CONVERSION_BADNESS
);
4276 /* Lvalues should prefer lvalue overloads. */
4277 if (TYPE_CODE (parm
) == TYPE_CODE_RVALUE_REF
)
4279 rank
.subrank
= REFERENCE_CONVERSION_RVALUE
;
4280 return sum_ranks (rank
, REFERENCE_CONVERSION_BADNESS
);
4285 if (types_equal (parm
, arg
))
4287 struct type
*t1
= parm
;
4288 struct type
*t2
= arg
;
4290 /* For pointers and references, compare target type. */
4291 if (TYPE_CODE (parm
) == TYPE_CODE_PTR
|| TYPE_IS_REFERENCE (parm
))
4293 t1
= TYPE_TARGET_TYPE (parm
);
4294 t2
= TYPE_TARGET_TYPE (arg
);
4297 /* Make sure they are CV equal, too. */
4298 if (TYPE_CONST (t1
) != TYPE_CONST (t2
))
4299 rank
.subrank
|= CV_CONVERSION_CONST
;
4300 if (TYPE_VOLATILE (t1
) != TYPE_VOLATILE (t2
))
4301 rank
.subrank
|= CV_CONVERSION_VOLATILE
;
4302 if (rank
.subrank
!= 0)
4303 return sum_ranks (CV_CONVERSION_BADNESS
, rank
);
4304 return EXACT_MATCH_BADNESS
;
4307 /* See through references, since we can almost make non-references
4310 if (TYPE_IS_REFERENCE (arg
))
4311 return (sum_ranks (rank_one_type (parm
, TYPE_TARGET_TYPE (arg
), NULL
),
4312 REFERENCE_CONVERSION_BADNESS
));
4313 if (TYPE_IS_REFERENCE (parm
))
4314 return (sum_ranks (rank_one_type (TYPE_TARGET_TYPE (parm
), arg
, NULL
),
4315 REFERENCE_CONVERSION_BADNESS
));
4317 /* Debugging only. */
4318 fprintf_filtered (gdb_stderr
,
4319 "------ Arg is %s [%d], parm is %s [%d]\n",
4320 TYPE_NAME (arg
), TYPE_CODE (arg
),
4321 TYPE_NAME (parm
), TYPE_CODE (parm
));
4323 /* x -> y means arg of type x being supplied for parameter of type y. */
4325 switch (TYPE_CODE (parm
))
4328 return rank_one_type_parm_ptr (parm
, arg
, value
);
4329 case TYPE_CODE_ARRAY
:
4330 return rank_one_type_parm_array (parm
, arg
, value
);
4331 case TYPE_CODE_FUNC
:
4332 return rank_one_type_parm_func (parm
, arg
, value
);
4334 return rank_one_type_parm_int (parm
, arg
, value
);
4335 case TYPE_CODE_ENUM
:
4336 return rank_one_type_parm_enum (parm
, arg
, value
);
4337 case TYPE_CODE_CHAR
:
4338 return rank_one_type_parm_char (parm
, arg
, value
);
4339 case TYPE_CODE_RANGE
:
4340 return rank_one_type_parm_range (parm
, arg
, value
);
4341 case TYPE_CODE_BOOL
:
4342 return rank_one_type_parm_bool (parm
, arg
, value
);
4344 return rank_one_type_parm_float (parm
, arg
, value
);
4345 case TYPE_CODE_COMPLEX
:
4346 return rank_one_type_parm_complex (parm
, arg
, value
);
4347 case TYPE_CODE_STRUCT
:
4348 return rank_one_type_parm_struct (parm
, arg
, value
);
4350 return rank_one_type_parm_set (parm
, arg
, value
);
4352 return INCOMPATIBLE_TYPE_BADNESS
;
4353 } /* switch (TYPE_CODE (arg)) */
4356 /* End of functions for overload resolution. */
4358 /* Routines to pretty-print types. */
4361 print_bit_vector (B_TYPE
*bits
, int nbits
)
4365 for (bitno
= 0; bitno
< nbits
; bitno
++)
4367 if ((bitno
% 8) == 0)
4369 puts_filtered (" ");
4371 if (B_TST (bits
, bitno
))
4372 printf_filtered (("1"));
4374 printf_filtered (("0"));
4378 /* Note the first arg should be the "this" pointer, we may not want to
4379 include it since we may get into a infinitely recursive
4383 print_args (struct field
*args
, int nargs
, int spaces
)
4389 for (i
= 0; i
< nargs
; i
++)
4391 printfi_filtered (spaces
, "[%d] name '%s'\n", i
,
4392 args
[i
].name
!= NULL
? args
[i
].name
: "<NULL>");
4393 recursive_dump_type (args
[i
].type
, spaces
+ 2);
4399 field_is_static (struct field
*f
)
4401 /* "static" fields are the fields whose location is not relative
4402 to the address of the enclosing struct. It would be nice to
4403 have a dedicated flag that would be set for static fields when
4404 the type is being created. But in practice, checking the field
4405 loc_kind should give us an accurate answer. */
4406 return (FIELD_LOC_KIND (*f
) == FIELD_LOC_KIND_PHYSNAME
4407 || FIELD_LOC_KIND (*f
) == FIELD_LOC_KIND_PHYSADDR
);
4411 dump_fn_fieldlists (struct type
*type
, int spaces
)
4417 printfi_filtered (spaces
, "fn_fieldlists ");
4418 gdb_print_host_address (TYPE_FN_FIELDLISTS (type
), gdb_stdout
);
4419 printf_filtered ("\n");
4420 for (method_idx
= 0; method_idx
< TYPE_NFN_FIELDS (type
); method_idx
++)
4422 f
= TYPE_FN_FIELDLIST1 (type
, method_idx
);
4423 printfi_filtered (spaces
+ 2, "[%d] name '%s' (",
4425 TYPE_FN_FIELDLIST_NAME (type
, method_idx
));
4426 gdb_print_host_address (TYPE_FN_FIELDLIST_NAME (type
, method_idx
),
4428 printf_filtered (_(") length %d\n"),
4429 TYPE_FN_FIELDLIST_LENGTH (type
, method_idx
));
4430 for (overload_idx
= 0;
4431 overload_idx
< TYPE_FN_FIELDLIST_LENGTH (type
, method_idx
);
4434 printfi_filtered (spaces
+ 4, "[%d] physname '%s' (",
4436 TYPE_FN_FIELD_PHYSNAME (f
, overload_idx
));
4437 gdb_print_host_address (TYPE_FN_FIELD_PHYSNAME (f
, overload_idx
),
4439 printf_filtered (")\n");
4440 printfi_filtered (spaces
+ 8, "type ");
4441 gdb_print_host_address (TYPE_FN_FIELD_TYPE (f
, overload_idx
),
4443 printf_filtered ("\n");
4445 recursive_dump_type (TYPE_FN_FIELD_TYPE (f
, overload_idx
),
4448 printfi_filtered (spaces
+ 8, "args ");
4449 gdb_print_host_address (TYPE_FN_FIELD_ARGS (f
, overload_idx
),
4451 printf_filtered ("\n");
4452 print_args (TYPE_FN_FIELD_ARGS (f
, overload_idx
),
4453 TYPE_NFIELDS (TYPE_FN_FIELD_TYPE (f
, overload_idx
)),
4455 printfi_filtered (spaces
+ 8, "fcontext ");
4456 gdb_print_host_address (TYPE_FN_FIELD_FCONTEXT (f
, overload_idx
),
4458 printf_filtered ("\n");
4460 printfi_filtered (spaces
+ 8, "is_const %d\n",
4461 TYPE_FN_FIELD_CONST (f
, overload_idx
));
4462 printfi_filtered (spaces
+ 8, "is_volatile %d\n",
4463 TYPE_FN_FIELD_VOLATILE (f
, overload_idx
));
4464 printfi_filtered (spaces
+ 8, "is_private %d\n",
4465 TYPE_FN_FIELD_PRIVATE (f
, overload_idx
));
4466 printfi_filtered (spaces
+ 8, "is_protected %d\n",
4467 TYPE_FN_FIELD_PROTECTED (f
, overload_idx
));
4468 printfi_filtered (spaces
+ 8, "is_stub %d\n",
4469 TYPE_FN_FIELD_STUB (f
, overload_idx
));
4470 printfi_filtered (spaces
+ 8, "voffset %u\n",
4471 TYPE_FN_FIELD_VOFFSET (f
, overload_idx
));
4477 print_cplus_stuff (struct type
*type
, int spaces
)
4479 printfi_filtered (spaces
, "vptr_fieldno %d\n", TYPE_VPTR_FIELDNO (type
));
4480 printfi_filtered (spaces
, "vptr_basetype ");
4481 gdb_print_host_address (TYPE_VPTR_BASETYPE (type
), gdb_stdout
);
4482 puts_filtered ("\n");
4483 if (TYPE_VPTR_BASETYPE (type
) != NULL
)
4484 recursive_dump_type (TYPE_VPTR_BASETYPE (type
), spaces
+ 2);
4486 printfi_filtered (spaces
, "n_baseclasses %d\n",
4487 TYPE_N_BASECLASSES (type
));
4488 printfi_filtered (spaces
, "nfn_fields %d\n",
4489 TYPE_NFN_FIELDS (type
));
4490 if (TYPE_N_BASECLASSES (type
) > 0)
4492 printfi_filtered (spaces
, "virtual_field_bits (%d bits at *",
4493 TYPE_N_BASECLASSES (type
));
4494 gdb_print_host_address (TYPE_FIELD_VIRTUAL_BITS (type
),
4496 printf_filtered (")");
4498 print_bit_vector (TYPE_FIELD_VIRTUAL_BITS (type
),
4499 TYPE_N_BASECLASSES (type
));
4500 puts_filtered ("\n");
4502 if (TYPE_NFIELDS (type
) > 0)
4504 if (TYPE_FIELD_PRIVATE_BITS (type
) != NULL
)
4506 printfi_filtered (spaces
,
4507 "private_field_bits (%d bits at *",
4508 TYPE_NFIELDS (type
));
4509 gdb_print_host_address (TYPE_FIELD_PRIVATE_BITS (type
),
4511 printf_filtered (")");
4512 print_bit_vector (TYPE_FIELD_PRIVATE_BITS (type
),
4513 TYPE_NFIELDS (type
));
4514 puts_filtered ("\n");
4516 if (TYPE_FIELD_PROTECTED_BITS (type
) != NULL
)
4518 printfi_filtered (spaces
,
4519 "protected_field_bits (%d bits at *",
4520 TYPE_NFIELDS (type
));
4521 gdb_print_host_address (TYPE_FIELD_PROTECTED_BITS (type
),
4523 printf_filtered (")");
4524 print_bit_vector (TYPE_FIELD_PROTECTED_BITS (type
),
4525 TYPE_NFIELDS (type
));
4526 puts_filtered ("\n");
4529 if (TYPE_NFN_FIELDS (type
) > 0)
4531 dump_fn_fieldlists (type
, spaces
);
4535 /* Print the contents of the TYPE's type_specific union, assuming that
4536 its type-specific kind is TYPE_SPECIFIC_GNAT_STUFF. */
4539 print_gnat_stuff (struct type
*type
, int spaces
)
4541 struct type
*descriptive_type
= TYPE_DESCRIPTIVE_TYPE (type
);
4543 if (descriptive_type
== NULL
)
4544 printfi_filtered (spaces
+ 2, "no descriptive type\n");
4547 printfi_filtered (spaces
+ 2, "descriptive type\n");
4548 recursive_dump_type (descriptive_type
, spaces
+ 4);
4552 static struct obstack dont_print_type_obstack
;
4555 recursive_dump_type (struct type
*type
, int spaces
)
4560 obstack_begin (&dont_print_type_obstack
, 0);
4562 if (TYPE_NFIELDS (type
) > 0
4563 || (HAVE_CPLUS_STRUCT (type
) && TYPE_NFN_FIELDS (type
) > 0))
4565 struct type
**first_dont_print
4566 = (struct type
**) obstack_base (&dont_print_type_obstack
);
4568 int i
= (struct type
**)
4569 obstack_next_free (&dont_print_type_obstack
) - first_dont_print
;
4573 if (type
== first_dont_print
[i
])
4575 printfi_filtered (spaces
, "type node ");
4576 gdb_print_host_address (type
, gdb_stdout
);
4577 printf_filtered (_(" <same as already seen type>\n"));
4582 obstack_ptr_grow (&dont_print_type_obstack
, type
);
4585 printfi_filtered (spaces
, "type node ");
4586 gdb_print_host_address (type
, gdb_stdout
);
4587 printf_filtered ("\n");
4588 printfi_filtered (spaces
, "name '%s' (",
4589 TYPE_NAME (type
) ? TYPE_NAME (type
) : "<NULL>");
4590 gdb_print_host_address (TYPE_NAME (type
), gdb_stdout
);
4591 printf_filtered (")\n");
4592 printfi_filtered (spaces
, "code 0x%x ", TYPE_CODE (type
));
4593 switch (TYPE_CODE (type
))
4595 case TYPE_CODE_UNDEF
:
4596 printf_filtered ("(TYPE_CODE_UNDEF)");
4599 printf_filtered ("(TYPE_CODE_PTR)");
4601 case TYPE_CODE_ARRAY
:
4602 printf_filtered ("(TYPE_CODE_ARRAY)");
4604 case TYPE_CODE_STRUCT
:
4605 printf_filtered ("(TYPE_CODE_STRUCT)");
4607 case TYPE_CODE_UNION
:
4608 printf_filtered ("(TYPE_CODE_UNION)");
4610 case TYPE_CODE_ENUM
:
4611 printf_filtered ("(TYPE_CODE_ENUM)");
4613 case TYPE_CODE_FLAGS
:
4614 printf_filtered ("(TYPE_CODE_FLAGS)");
4616 case TYPE_CODE_FUNC
:
4617 printf_filtered ("(TYPE_CODE_FUNC)");
4620 printf_filtered ("(TYPE_CODE_INT)");
4623 printf_filtered ("(TYPE_CODE_FLT)");
4625 case TYPE_CODE_VOID
:
4626 printf_filtered ("(TYPE_CODE_VOID)");
4629 printf_filtered ("(TYPE_CODE_SET)");
4631 case TYPE_CODE_RANGE
:
4632 printf_filtered ("(TYPE_CODE_RANGE)");
4634 case TYPE_CODE_STRING
:
4635 printf_filtered ("(TYPE_CODE_STRING)");
4637 case TYPE_CODE_ERROR
:
4638 printf_filtered ("(TYPE_CODE_ERROR)");
4640 case TYPE_CODE_MEMBERPTR
:
4641 printf_filtered ("(TYPE_CODE_MEMBERPTR)");
4643 case TYPE_CODE_METHODPTR
:
4644 printf_filtered ("(TYPE_CODE_METHODPTR)");
4646 case TYPE_CODE_METHOD
:
4647 printf_filtered ("(TYPE_CODE_METHOD)");
4650 printf_filtered ("(TYPE_CODE_REF)");
4652 case TYPE_CODE_CHAR
:
4653 printf_filtered ("(TYPE_CODE_CHAR)");
4655 case TYPE_CODE_BOOL
:
4656 printf_filtered ("(TYPE_CODE_BOOL)");
4658 case TYPE_CODE_COMPLEX
:
4659 printf_filtered ("(TYPE_CODE_COMPLEX)");
4661 case TYPE_CODE_TYPEDEF
:
4662 printf_filtered ("(TYPE_CODE_TYPEDEF)");
4664 case TYPE_CODE_NAMESPACE
:
4665 printf_filtered ("(TYPE_CODE_NAMESPACE)");
4668 printf_filtered ("(UNKNOWN TYPE CODE)");
4671 puts_filtered ("\n");
4672 printfi_filtered (spaces
, "length %s\n", pulongest (TYPE_LENGTH (type
)));
4673 if (TYPE_OBJFILE_OWNED (type
))
4675 printfi_filtered (spaces
, "objfile ");
4676 gdb_print_host_address (TYPE_OWNER (type
).objfile
, gdb_stdout
);
4680 printfi_filtered (spaces
, "gdbarch ");
4681 gdb_print_host_address (TYPE_OWNER (type
).gdbarch
, gdb_stdout
);
4683 printf_filtered ("\n");
4684 printfi_filtered (spaces
, "target_type ");
4685 gdb_print_host_address (TYPE_TARGET_TYPE (type
), gdb_stdout
);
4686 printf_filtered ("\n");
4687 if (TYPE_TARGET_TYPE (type
) != NULL
)
4689 recursive_dump_type (TYPE_TARGET_TYPE (type
), spaces
+ 2);
4691 printfi_filtered (spaces
, "pointer_type ");
4692 gdb_print_host_address (TYPE_POINTER_TYPE (type
), gdb_stdout
);
4693 printf_filtered ("\n");
4694 printfi_filtered (spaces
, "reference_type ");
4695 gdb_print_host_address (TYPE_REFERENCE_TYPE (type
), gdb_stdout
);
4696 printf_filtered ("\n");
4697 printfi_filtered (spaces
, "type_chain ");
4698 gdb_print_host_address (TYPE_CHAIN (type
), gdb_stdout
);
4699 printf_filtered ("\n");
4700 printfi_filtered (spaces
, "instance_flags 0x%x",
4701 TYPE_INSTANCE_FLAGS (type
));
4702 if (TYPE_CONST (type
))
4704 puts_filtered (" TYPE_CONST");
4706 if (TYPE_VOLATILE (type
))
4708 puts_filtered (" TYPE_VOLATILE");
4710 if (TYPE_CODE_SPACE (type
))
4712 puts_filtered (" TYPE_CODE_SPACE");
4714 if (TYPE_DATA_SPACE (type
))
4716 puts_filtered (" TYPE_DATA_SPACE");
4718 if (TYPE_ADDRESS_CLASS_1 (type
))
4720 puts_filtered (" TYPE_ADDRESS_CLASS_1");
4722 if (TYPE_ADDRESS_CLASS_2 (type
))
4724 puts_filtered (" TYPE_ADDRESS_CLASS_2");
4726 if (TYPE_RESTRICT (type
))
4728 puts_filtered (" TYPE_RESTRICT");
4730 if (TYPE_ATOMIC (type
))
4732 puts_filtered (" TYPE_ATOMIC");
4734 puts_filtered ("\n");
4736 printfi_filtered (spaces
, "flags");
4737 if (TYPE_UNSIGNED (type
))
4739 puts_filtered (" TYPE_UNSIGNED");
4741 if (TYPE_NOSIGN (type
))
4743 puts_filtered (" TYPE_NOSIGN");
4745 if (TYPE_ENDIANITY_NOT_DEFAULT (type
))
4747 puts_filtered (" TYPE_ENDIANITY_NOT_DEFAULT");
4749 if (TYPE_STUB (type
))
4751 puts_filtered (" TYPE_STUB");
4753 if (TYPE_TARGET_STUB (type
))
4755 puts_filtered (" TYPE_TARGET_STUB");
4757 if (TYPE_PROTOTYPED (type
))
4759 puts_filtered (" TYPE_PROTOTYPED");
4761 if (TYPE_INCOMPLETE (type
))
4763 puts_filtered (" TYPE_INCOMPLETE");
4765 if (TYPE_VARARGS (type
))
4767 puts_filtered (" TYPE_VARARGS");
4769 /* This is used for things like AltiVec registers on ppc. Gcc emits
4770 an attribute for the array type, which tells whether or not we
4771 have a vector, instead of a regular array. */
4772 if (TYPE_VECTOR (type
))
4774 puts_filtered (" TYPE_VECTOR");
4776 if (TYPE_FIXED_INSTANCE (type
))
4778 puts_filtered (" TYPE_FIXED_INSTANCE");
4780 if (TYPE_STUB_SUPPORTED (type
))
4782 puts_filtered (" TYPE_STUB_SUPPORTED");
4784 if (TYPE_NOTTEXT (type
))
4786 puts_filtered (" TYPE_NOTTEXT");
4788 puts_filtered ("\n");
4789 printfi_filtered (spaces
, "nfields %d ", TYPE_NFIELDS (type
));
4790 gdb_print_host_address (TYPE_FIELDS (type
), gdb_stdout
);
4791 puts_filtered ("\n");
4792 for (idx
= 0; idx
< TYPE_NFIELDS (type
); idx
++)
4794 if (TYPE_CODE (type
) == TYPE_CODE_ENUM
)
4795 printfi_filtered (spaces
+ 2,
4796 "[%d] enumval %s type ",
4797 idx
, plongest (TYPE_FIELD_ENUMVAL (type
, idx
)));
4799 printfi_filtered (spaces
+ 2,
4800 "[%d] bitpos %s bitsize %d type ",
4801 idx
, plongest (TYPE_FIELD_BITPOS (type
, idx
)),
4802 TYPE_FIELD_BITSIZE (type
, idx
));
4803 gdb_print_host_address (TYPE_FIELD_TYPE (type
, idx
), gdb_stdout
);
4804 printf_filtered (" name '%s' (",
4805 TYPE_FIELD_NAME (type
, idx
) != NULL
4806 ? TYPE_FIELD_NAME (type
, idx
)
4808 gdb_print_host_address (TYPE_FIELD_NAME (type
, idx
), gdb_stdout
);
4809 printf_filtered (")\n");
4810 if (TYPE_FIELD_TYPE (type
, idx
) != NULL
)
4812 recursive_dump_type (TYPE_FIELD_TYPE (type
, idx
), spaces
+ 4);
4815 if (TYPE_CODE (type
) == TYPE_CODE_RANGE
)
4817 printfi_filtered (spaces
, "low %s%s high %s%s\n",
4818 plongest (TYPE_LOW_BOUND (type
)),
4819 TYPE_LOW_BOUND_UNDEFINED (type
) ? " (undefined)" : "",
4820 plongest (TYPE_HIGH_BOUND (type
)),
4821 TYPE_HIGH_BOUND_UNDEFINED (type
)
4822 ? " (undefined)" : "");
4825 switch (TYPE_SPECIFIC_FIELD (type
))
4827 case TYPE_SPECIFIC_CPLUS_STUFF
:
4828 printfi_filtered (spaces
, "cplus_stuff ");
4829 gdb_print_host_address (TYPE_CPLUS_SPECIFIC (type
),
4831 puts_filtered ("\n");
4832 print_cplus_stuff (type
, spaces
);
4835 case TYPE_SPECIFIC_GNAT_STUFF
:
4836 printfi_filtered (spaces
, "gnat_stuff ");
4837 gdb_print_host_address (TYPE_GNAT_SPECIFIC (type
), gdb_stdout
);
4838 puts_filtered ("\n");
4839 print_gnat_stuff (type
, spaces
);
4842 case TYPE_SPECIFIC_FLOATFORMAT
:
4843 printfi_filtered (spaces
, "floatformat ");
4844 if (TYPE_FLOATFORMAT (type
) == NULL
4845 || TYPE_FLOATFORMAT (type
)->name
== NULL
)
4846 puts_filtered ("(null)");
4848 puts_filtered (TYPE_FLOATFORMAT (type
)->name
);
4849 puts_filtered ("\n");
4852 case TYPE_SPECIFIC_FUNC
:
4853 printfi_filtered (spaces
, "calling_convention %d\n",
4854 TYPE_CALLING_CONVENTION (type
));
4855 /* tail_call_list is not printed. */
4858 case TYPE_SPECIFIC_SELF_TYPE
:
4859 printfi_filtered (spaces
, "self_type ");
4860 gdb_print_host_address (TYPE_SELF_TYPE (type
), gdb_stdout
);
4861 puts_filtered ("\n");
4866 obstack_free (&dont_print_type_obstack
, NULL
);
4869 /* Trivial helpers for the libiberty hash table, for mapping one
4872 struct type_pair
: public allocate_on_obstack
4874 type_pair (struct type
*old_
, struct type
*newobj_
)
4875 : old (old_
), newobj (newobj_
)
4878 struct type
* const old
, * const newobj
;
4882 type_pair_hash (const void *item
)
4884 const struct type_pair
*pair
= (const struct type_pair
*) item
;
4886 return htab_hash_pointer (pair
->old
);
4890 type_pair_eq (const void *item_lhs
, const void *item_rhs
)
4892 const struct type_pair
*lhs
= (const struct type_pair
*) item_lhs
;
4893 const struct type_pair
*rhs
= (const struct type_pair
*) item_rhs
;
4895 return lhs
->old
== rhs
->old
;
4898 /* Allocate the hash table used by copy_type_recursive to walk
4899 types without duplicates. We use OBJFILE's obstack, because
4900 OBJFILE is about to be deleted. */
4903 create_copied_types_hash (struct objfile
*objfile
)
4905 return htab_create_alloc_ex (1, type_pair_hash
, type_pair_eq
,
4906 NULL
, &objfile
->objfile_obstack
,
4907 hashtab_obstack_allocate
,
4908 dummy_obstack_deallocate
);
4911 /* Recursively copy (deep copy) a dynamic attribute list of a type. */
4913 static struct dynamic_prop_list
*
4914 copy_dynamic_prop_list (struct obstack
*objfile_obstack
,
4915 struct dynamic_prop_list
*list
)
4917 struct dynamic_prop_list
*copy
= list
;
4918 struct dynamic_prop_list
**node_ptr
= ©
;
4920 while (*node_ptr
!= NULL
)
4922 struct dynamic_prop_list
*node_copy
;
4924 node_copy
= ((struct dynamic_prop_list
*)
4925 obstack_copy (objfile_obstack
, *node_ptr
,
4926 sizeof (struct dynamic_prop_list
)));
4927 node_copy
->prop
= (*node_ptr
)->prop
;
4928 *node_ptr
= node_copy
;
4930 node_ptr
= &node_copy
->next
;
4936 /* Recursively copy (deep copy) TYPE, if it is associated with
4937 OBJFILE. Return a new type owned by the gdbarch associated with the type, a
4938 saved type if we have already visited TYPE (using COPIED_TYPES), or TYPE if
4939 it is not associated with OBJFILE. */
4942 copy_type_recursive (struct objfile
*objfile
,
4944 htab_t copied_types
)
4947 struct type
*new_type
;
4949 if (! TYPE_OBJFILE_OWNED (type
))
4952 /* This type shouldn't be pointing to any types in other objfiles;
4953 if it did, the type might disappear unexpectedly. */
4954 gdb_assert (TYPE_OBJFILE (type
) == objfile
);
4956 struct type_pair
pair (type
, nullptr);
4958 slot
= htab_find_slot (copied_types
, &pair
, INSERT
);
4960 return ((struct type_pair
*) *slot
)->newobj
;
4962 new_type
= alloc_type_arch (get_type_arch (type
));
4964 /* We must add the new type to the hash table immediately, in case
4965 we encounter this type again during a recursive call below. */
4966 struct type_pair
*stored
4967 = new (&objfile
->objfile_obstack
) struct type_pair (type
, new_type
);
4971 /* Copy the common fields of types. For the main type, we simply
4972 copy the entire thing and then update specific fields as needed. */
4973 *TYPE_MAIN_TYPE (new_type
) = *TYPE_MAIN_TYPE (type
);
4974 TYPE_OBJFILE_OWNED (new_type
) = 0;
4975 TYPE_OWNER (new_type
).gdbarch
= get_type_arch (type
);
4977 if (TYPE_NAME (type
))
4978 TYPE_NAME (new_type
) = xstrdup (TYPE_NAME (type
));
4980 TYPE_INSTANCE_FLAGS (new_type
) = TYPE_INSTANCE_FLAGS (type
);
4981 TYPE_LENGTH (new_type
) = TYPE_LENGTH (type
);
4983 /* Copy the fields. */
4984 if (TYPE_NFIELDS (type
))
4988 nfields
= TYPE_NFIELDS (type
);
4989 TYPE_FIELDS (new_type
) = (struct field
*)
4990 TYPE_ZALLOC (new_type
, nfields
* sizeof (struct field
));
4991 for (i
= 0; i
< nfields
; i
++)
4993 TYPE_FIELD_ARTIFICIAL (new_type
, i
) =
4994 TYPE_FIELD_ARTIFICIAL (type
, i
);
4995 TYPE_FIELD_BITSIZE (new_type
, i
) = TYPE_FIELD_BITSIZE (type
, i
);
4996 if (TYPE_FIELD_TYPE (type
, i
))
4997 TYPE_FIELD_TYPE (new_type
, i
)
4998 = copy_type_recursive (objfile
, TYPE_FIELD_TYPE (type
, i
),
5000 if (TYPE_FIELD_NAME (type
, i
))
5001 TYPE_FIELD_NAME (new_type
, i
) =
5002 xstrdup (TYPE_FIELD_NAME (type
, i
));
5003 switch (TYPE_FIELD_LOC_KIND (type
, i
))
5005 case FIELD_LOC_KIND_BITPOS
:
5006 SET_FIELD_BITPOS (TYPE_FIELD (new_type
, i
),
5007 TYPE_FIELD_BITPOS (type
, i
));
5009 case FIELD_LOC_KIND_ENUMVAL
:
5010 SET_FIELD_ENUMVAL (TYPE_FIELD (new_type
, i
),
5011 TYPE_FIELD_ENUMVAL (type
, i
));
5013 case FIELD_LOC_KIND_PHYSADDR
:
5014 SET_FIELD_PHYSADDR (TYPE_FIELD (new_type
, i
),
5015 TYPE_FIELD_STATIC_PHYSADDR (type
, i
));
5017 case FIELD_LOC_KIND_PHYSNAME
:
5018 SET_FIELD_PHYSNAME (TYPE_FIELD (new_type
, i
),
5019 xstrdup (TYPE_FIELD_STATIC_PHYSNAME (type
,
5023 internal_error (__FILE__
, __LINE__
,
5024 _("Unexpected type field location kind: %d"),
5025 TYPE_FIELD_LOC_KIND (type
, i
));
5030 /* For range types, copy the bounds information. */
5031 if (TYPE_CODE (type
) == TYPE_CODE_RANGE
)
5033 TYPE_RANGE_DATA (new_type
) = (struct range_bounds
*)
5034 TYPE_ALLOC (new_type
, sizeof (struct range_bounds
));
5035 *TYPE_RANGE_DATA (new_type
) = *TYPE_RANGE_DATA (type
);
5038 if (TYPE_DYN_PROP_LIST (type
) != NULL
)
5039 TYPE_DYN_PROP_LIST (new_type
)
5040 = copy_dynamic_prop_list (&objfile
->objfile_obstack
,
5041 TYPE_DYN_PROP_LIST (type
));
5044 /* Copy pointers to other types. */
5045 if (TYPE_TARGET_TYPE (type
))
5046 TYPE_TARGET_TYPE (new_type
) =
5047 copy_type_recursive (objfile
,
5048 TYPE_TARGET_TYPE (type
),
5051 /* Maybe copy the type_specific bits.
5053 NOTE drow/2005-12-09: We do not copy the C++-specific bits like
5054 base classes and methods. There's no fundamental reason why we
5055 can't, but at the moment it is not needed. */
5057 switch (TYPE_SPECIFIC_FIELD (type
))
5059 case TYPE_SPECIFIC_NONE
:
5061 case TYPE_SPECIFIC_FUNC
:
5062 INIT_FUNC_SPECIFIC (new_type
);
5063 TYPE_CALLING_CONVENTION (new_type
) = TYPE_CALLING_CONVENTION (type
);
5064 TYPE_NO_RETURN (new_type
) = TYPE_NO_RETURN (type
);
5065 TYPE_TAIL_CALL_LIST (new_type
) = NULL
;
5067 case TYPE_SPECIFIC_FLOATFORMAT
:
5068 TYPE_FLOATFORMAT (new_type
) = TYPE_FLOATFORMAT (type
);
5070 case TYPE_SPECIFIC_CPLUS_STUFF
:
5071 INIT_CPLUS_SPECIFIC (new_type
);
5073 case TYPE_SPECIFIC_GNAT_STUFF
:
5074 INIT_GNAT_SPECIFIC (new_type
);
5076 case TYPE_SPECIFIC_SELF_TYPE
:
5077 set_type_self_type (new_type
,
5078 copy_type_recursive (objfile
, TYPE_SELF_TYPE (type
),
5082 gdb_assert_not_reached ("bad type_specific_kind");
5088 /* Make a copy of the given TYPE, except that the pointer & reference
5089 types are not preserved.
5091 This function assumes that the given type has an associated objfile.
5092 This objfile is used to allocate the new type. */
5095 copy_type (const struct type
*type
)
5097 struct type
*new_type
;
5099 gdb_assert (TYPE_OBJFILE_OWNED (type
));
5101 new_type
= alloc_type_copy (type
);
5102 TYPE_INSTANCE_FLAGS (new_type
) = TYPE_INSTANCE_FLAGS (type
);
5103 TYPE_LENGTH (new_type
) = TYPE_LENGTH (type
);
5104 memcpy (TYPE_MAIN_TYPE (new_type
), TYPE_MAIN_TYPE (type
),
5105 sizeof (struct main_type
));
5106 if (TYPE_DYN_PROP_LIST (type
) != NULL
)
5107 TYPE_DYN_PROP_LIST (new_type
)
5108 = copy_dynamic_prop_list (&TYPE_OBJFILE (type
) -> objfile_obstack
,
5109 TYPE_DYN_PROP_LIST (type
));
5114 /* Helper functions to initialize architecture-specific types. */
5116 /* Allocate a type structure associated with GDBARCH and set its
5117 CODE, LENGTH, and NAME fields. */
5120 arch_type (struct gdbarch
*gdbarch
,
5121 enum type_code code
, int bit
, const char *name
)
5125 type
= alloc_type_arch (gdbarch
);
5126 set_type_code (type
, code
);
5127 gdb_assert ((bit
% TARGET_CHAR_BIT
) == 0);
5128 TYPE_LENGTH (type
) = bit
/ TARGET_CHAR_BIT
;
5131 TYPE_NAME (type
) = gdbarch_obstack_strdup (gdbarch
, name
);
5136 /* Allocate a TYPE_CODE_INT type structure associated with GDBARCH.
5137 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
5138 the type's TYPE_UNSIGNED flag. NAME is the type name. */
5141 arch_integer_type (struct gdbarch
*gdbarch
,
5142 int bit
, int unsigned_p
, const char *name
)
5146 t
= arch_type (gdbarch
, TYPE_CODE_INT
, bit
, name
);
5148 TYPE_UNSIGNED (t
) = 1;
5153 /* Allocate a TYPE_CODE_CHAR type structure associated with GDBARCH.
5154 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
5155 the type's TYPE_UNSIGNED flag. NAME is the type name. */
5158 arch_character_type (struct gdbarch
*gdbarch
,
5159 int bit
, int unsigned_p
, const char *name
)
5163 t
= arch_type (gdbarch
, TYPE_CODE_CHAR
, bit
, name
);
5165 TYPE_UNSIGNED (t
) = 1;
5170 /* Allocate a TYPE_CODE_BOOL type structure associated with GDBARCH.
5171 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
5172 the type's TYPE_UNSIGNED flag. NAME is the type name. */
5175 arch_boolean_type (struct gdbarch
*gdbarch
,
5176 int bit
, int unsigned_p
, const char *name
)
5180 t
= arch_type (gdbarch
, TYPE_CODE_BOOL
, bit
, name
);
5182 TYPE_UNSIGNED (t
) = 1;
5187 /* Allocate a TYPE_CODE_FLT type structure associated with GDBARCH.
5188 BIT is the type size in bits; if BIT equals -1, the size is
5189 determined by the floatformat. NAME is the type name. Set the
5190 TYPE_FLOATFORMAT from FLOATFORMATS. */
5193 arch_float_type (struct gdbarch
*gdbarch
,
5194 int bit
, const char *name
,
5195 const struct floatformat
**floatformats
)
5197 const struct floatformat
*fmt
= floatformats
[gdbarch_byte_order (gdbarch
)];
5200 bit
= verify_floatformat (bit
, fmt
);
5201 t
= arch_type (gdbarch
, TYPE_CODE_FLT
, bit
, name
);
5202 TYPE_FLOATFORMAT (t
) = fmt
;
5207 /* Allocate a TYPE_CODE_DECFLOAT type structure associated with GDBARCH.
5208 BIT is the type size in bits. NAME is the type name. */
5211 arch_decfloat_type (struct gdbarch
*gdbarch
, int bit
, const char *name
)
5215 t
= arch_type (gdbarch
, TYPE_CODE_DECFLOAT
, bit
, name
);
5219 /* Allocate a TYPE_CODE_COMPLEX type structure associated with GDBARCH.
5220 NAME is the type name. TARGET_TYPE is the component float type. */
5223 arch_complex_type (struct gdbarch
*gdbarch
,
5224 const char *name
, struct type
*target_type
)
5228 t
= arch_type (gdbarch
, TYPE_CODE_COMPLEX
,
5229 2 * TYPE_LENGTH (target_type
) * TARGET_CHAR_BIT
, name
);
5230 TYPE_TARGET_TYPE (t
) = target_type
;
5234 /* Allocate a TYPE_CODE_PTR type structure associated with GDBARCH.
5235 BIT is the pointer type size in bits. NAME is the type name.
5236 TARGET_TYPE is the pointer target type. Always sets the pointer type's
5237 TYPE_UNSIGNED flag. */
5240 arch_pointer_type (struct gdbarch
*gdbarch
,
5241 int bit
, const char *name
, struct type
*target_type
)
5245 t
= arch_type (gdbarch
, TYPE_CODE_PTR
, bit
, name
);
5246 TYPE_TARGET_TYPE (t
) = target_type
;
5247 TYPE_UNSIGNED (t
) = 1;
5251 /* Allocate a TYPE_CODE_FLAGS type structure associated with GDBARCH.
5252 NAME is the type name. BIT is the size of the flag word in bits. */
5255 arch_flags_type (struct gdbarch
*gdbarch
, const char *name
, int bit
)
5259 type
= arch_type (gdbarch
, TYPE_CODE_FLAGS
, bit
, name
);
5260 TYPE_UNSIGNED (type
) = 1;
5261 TYPE_NFIELDS (type
) = 0;
5262 /* Pre-allocate enough space assuming every field is one bit. */
5264 = (struct field
*) TYPE_ZALLOC (type
, bit
* sizeof (struct field
));
5269 /* Add field to TYPE_CODE_FLAGS type TYPE to indicate the bit at
5270 position BITPOS is called NAME. Pass NAME as "" for fields that
5271 should not be printed. */
5274 append_flags_type_field (struct type
*type
, int start_bitpos
, int nr_bits
,
5275 struct type
*field_type
, const char *name
)
5277 int type_bitsize
= TYPE_LENGTH (type
) * TARGET_CHAR_BIT
;
5278 int field_nr
= TYPE_NFIELDS (type
);
5280 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_FLAGS
);
5281 gdb_assert (TYPE_NFIELDS (type
) + 1 <= type_bitsize
);
5282 gdb_assert (start_bitpos
>= 0 && start_bitpos
< type_bitsize
);
5283 gdb_assert (nr_bits
>= 1 && nr_bits
<= type_bitsize
);
5284 gdb_assert (name
!= NULL
);
5286 TYPE_FIELD_NAME (type
, field_nr
) = xstrdup (name
);
5287 TYPE_FIELD_TYPE (type
, field_nr
) = field_type
;
5288 SET_FIELD_BITPOS (TYPE_FIELD (type
, field_nr
), start_bitpos
);
5289 TYPE_FIELD_BITSIZE (type
, field_nr
) = nr_bits
;
5290 ++TYPE_NFIELDS (type
);
5293 /* Special version of append_flags_type_field to add a flag field.
5294 Add field to TYPE_CODE_FLAGS type TYPE to indicate the bit at
5295 position BITPOS is called NAME. */
5298 append_flags_type_flag (struct type
*type
, int bitpos
, const char *name
)
5300 struct gdbarch
*gdbarch
= get_type_arch (type
);
5302 append_flags_type_field (type
, bitpos
, 1,
5303 builtin_type (gdbarch
)->builtin_bool
,
5307 /* Allocate a TYPE_CODE_STRUCT or TYPE_CODE_UNION type structure (as
5308 specified by CODE) associated with GDBARCH. NAME is the type name. */
5311 arch_composite_type (struct gdbarch
*gdbarch
, const char *name
,
5312 enum type_code code
)
5316 gdb_assert (code
== TYPE_CODE_STRUCT
|| code
== TYPE_CODE_UNION
);
5317 t
= arch_type (gdbarch
, code
, 0, NULL
);
5318 TYPE_NAME (t
) = name
;
5319 INIT_CPLUS_SPECIFIC (t
);
5323 /* Add new field with name NAME and type FIELD to composite type T.
5324 Do not set the field's position or adjust the type's length;
5325 the caller should do so. Return the new field. */
5328 append_composite_type_field_raw (struct type
*t
, const char *name
,
5333 TYPE_NFIELDS (t
) = TYPE_NFIELDS (t
) + 1;
5334 TYPE_FIELDS (t
) = XRESIZEVEC (struct field
, TYPE_FIELDS (t
),
5336 f
= &(TYPE_FIELDS (t
)[TYPE_NFIELDS (t
) - 1]);
5337 memset (f
, 0, sizeof f
[0]);
5338 FIELD_TYPE (f
[0]) = field
;
5339 FIELD_NAME (f
[0]) = name
;
5343 /* Add new field with name NAME and type FIELD to composite type T.
5344 ALIGNMENT (if non-zero) specifies the minimum field alignment. */
5347 append_composite_type_field_aligned (struct type
*t
, const char *name
,
5348 struct type
*field
, int alignment
)
5350 struct field
*f
= append_composite_type_field_raw (t
, name
, field
);
5352 if (TYPE_CODE (t
) == TYPE_CODE_UNION
)
5354 if (TYPE_LENGTH (t
) < TYPE_LENGTH (field
))
5355 TYPE_LENGTH (t
) = TYPE_LENGTH (field
);
5357 else if (TYPE_CODE (t
) == TYPE_CODE_STRUCT
)
5359 TYPE_LENGTH (t
) = TYPE_LENGTH (t
) + TYPE_LENGTH (field
);
5360 if (TYPE_NFIELDS (t
) > 1)
5362 SET_FIELD_BITPOS (f
[0],
5363 (FIELD_BITPOS (f
[-1])
5364 + (TYPE_LENGTH (FIELD_TYPE (f
[-1]))
5365 * TARGET_CHAR_BIT
)));
5371 alignment
*= TARGET_CHAR_BIT
;
5372 left
= FIELD_BITPOS (f
[0]) % alignment
;
5376 SET_FIELD_BITPOS (f
[0], FIELD_BITPOS (f
[0]) + (alignment
- left
));
5377 TYPE_LENGTH (t
) += (alignment
- left
) / TARGET_CHAR_BIT
;
5384 /* Add new field with name NAME and type FIELD to composite type T. */
5387 append_composite_type_field (struct type
*t
, const char *name
,
5390 append_composite_type_field_aligned (t
, name
, field
, 0);
5393 static struct gdbarch_data
*gdbtypes_data
;
5395 const struct builtin_type
*
5396 builtin_type (struct gdbarch
*gdbarch
)
5398 return (const struct builtin_type
*) gdbarch_data (gdbarch
, gdbtypes_data
);
5402 gdbtypes_post_init (struct gdbarch
*gdbarch
)
5404 struct builtin_type
*builtin_type
5405 = GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct builtin_type
);
5408 builtin_type
->builtin_void
5409 = arch_type (gdbarch
, TYPE_CODE_VOID
, TARGET_CHAR_BIT
, "void");
5410 builtin_type
->builtin_char
5411 = arch_integer_type (gdbarch
, TARGET_CHAR_BIT
,
5412 !gdbarch_char_signed (gdbarch
), "char");
5413 TYPE_NOSIGN (builtin_type
->builtin_char
) = 1;
5414 builtin_type
->builtin_signed_char
5415 = arch_integer_type (gdbarch
, TARGET_CHAR_BIT
,
5417 builtin_type
->builtin_unsigned_char
5418 = arch_integer_type (gdbarch
, TARGET_CHAR_BIT
,
5419 1, "unsigned char");
5420 builtin_type
->builtin_short
5421 = arch_integer_type (gdbarch
, gdbarch_short_bit (gdbarch
),
5423 builtin_type
->builtin_unsigned_short
5424 = arch_integer_type (gdbarch
, gdbarch_short_bit (gdbarch
),
5425 1, "unsigned short");
5426 builtin_type
->builtin_int
5427 = arch_integer_type (gdbarch
, gdbarch_int_bit (gdbarch
),
5429 builtin_type
->builtin_unsigned_int
5430 = arch_integer_type (gdbarch
, gdbarch_int_bit (gdbarch
),
5432 builtin_type
->builtin_long
5433 = arch_integer_type (gdbarch
, gdbarch_long_bit (gdbarch
),
5435 builtin_type
->builtin_unsigned_long
5436 = arch_integer_type (gdbarch
, gdbarch_long_bit (gdbarch
),
5437 1, "unsigned long");
5438 builtin_type
->builtin_long_long
5439 = arch_integer_type (gdbarch
, gdbarch_long_long_bit (gdbarch
),
5441 builtin_type
->builtin_unsigned_long_long
5442 = arch_integer_type (gdbarch
, gdbarch_long_long_bit (gdbarch
),
5443 1, "unsigned long long");
5444 builtin_type
->builtin_half
5445 = arch_float_type (gdbarch
, gdbarch_half_bit (gdbarch
),
5446 "half", gdbarch_half_format (gdbarch
));
5447 builtin_type
->builtin_float
5448 = arch_float_type (gdbarch
, gdbarch_float_bit (gdbarch
),
5449 "float", gdbarch_float_format (gdbarch
));
5450 builtin_type
->builtin_double
5451 = arch_float_type (gdbarch
, gdbarch_double_bit (gdbarch
),
5452 "double", gdbarch_double_format (gdbarch
));
5453 builtin_type
->builtin_long_double
5454 = arch_float_type (gdbarch
, gdbarch_long_double_bit (gdbarch
),
5455 "long double", gdbarch_long_double_format (gdbarch
));
5456 builtin_type
->builtin_complex
5457 = arch_complex_type (gdbarch
, "complex",
5458 builtin_type
->builtin_float
);
5459 builtin_type
->builtin_double_complex
5460 = arch_complex_type (gdbarch
, "double complex",
5461 builtin_type
->builtin_double
);
5462 builtin_type
->builtin_string
5463 = arch_type (gdbarch
, TYPE_CODE_STRING
, TARGET_CHAR_BIT
, "string");
5464 builtin_type
->builtin_bool
5465 = arch_type (gdbarch
, TYPE_CODE_BOOL
, TARGET_CHAR_BIT
, "bool");
5467 /* The following three are about decimal floating point types, which
5468 are 32-bits, 64-bits and 128-bits respectively. */
5469 builtin_type
->builtin_decfloat
5470 = arch_decfloat_type (gdbarch
, 32, "_Decimal32");
5471 builtin_type
->builtin_decdouble
5472 = arch_decfloat_type (gdbarch
, 64, "_Decimal64");
5473 builtin_type
->builtin_declong
5474 = arch_decfloat_type (gdbarch
, 128, "_Decimal128");
5476 /* "True" character types. */
5477 builtin_type
->builtin_true_char
5478 = arch_character_type (gdbarch
, TARGET_CHAR_BIT
, 0, "true character");
5479 builtin_type
->builtin_true_unsigned_char
5480 = arch_character_type (gdbarch
, TARGET_CHAR_BIT
, 1, "true character");
5482 /* Fixed-size integer types. */
5483 builtin_type
->builtin_int0
5484 = arch_integer_type (gdbarch
, 0, 0, "int0_t");
5485 builtin_type
->builtin_int8
5486 = arch_integer_type (gdbarch
, 8, 0, "int8_t");
5487 builtin_type
->builtin_uint8
5488 = arch_integer_type (gdbarch
, 8, 1, "uint8_t");
5489 builtin_type
->builtin_int16
5490 = arch_integer_type (gdbarch
, 16, 0, "int16_t");
5491 builtin_type
->builtin_uint16
5492 = arch_integer_type (gdbarch
, 16, 1, "uint16_t");
5493 builtin_type
->builtin_int24
5494 = arch_integer_type (gdbarch
, 24, 0, "int24_t");
5495 builtin_type
->builtin_uint24
5496 = arch_integer_type (gdbarch
, 24, 1, "uint24_t");
5497 builtin_type
->builtin_int32
5498 = arch_integer_type (gdbarch
, 32, 0, "int32_t");
5499 builtin_type
->builtin_uint32
5500 = arch_integer_type (gdbarch
, 32, 1, "uint32_t");
5501 builtin_type
->builtin_int64
5502 = arch_integer_type (gdbarch
, 64, 0, "int64_t");
5503 builtin_type
->builtin_uint64
5504 = arch_integer_type (gdbarch
, 64, 1, "uint64_t");
5505 builtin_type
->builtin_int128
5506 = arch_integer_type (gdbarch
, 128, 0, "int128_t");
5507 builtin_type
->builtin_uint128
5508 = arch_integer_type (gdbarch
, 128, 1, "uint128_t");
5509 TYPE_INSTANCE_FLAGS (builtin_type
->builtin_int8
) |=
5510 TYPE_INSTANCE_FLAG_NOTTEXT
;
5511 TYPE_INSTANCE_FLAGS (builtin_type
->builtin_uint8
) |=
5512 TYPE_INSTANCE_FLAG_NOTTEXT
;
5514 /* Wide character types. */
5515 builtin_type
->builtin_char16
5516 = arch_integer_type (gdbarch
, 16, 1, "char16_t");
5517 builtin_type
->builtin_char32
5518 = arch_integer_type (gdbarch
, 32, 1, "char32_t");
5519 builtin_type
->builtin_wchar
5520 = arch_integer_type (gdbarch
, gdbarch_wchar_bit (gdbarch
),
5521 !gdbarch_wchar_signed (gdbarch
), "wchar_t");
5523 /* Default data/code pointer types. */
5524 builtin_type
->builtin_data_ptr
5525 = lookup_pointer_type (builtin_type
->builtin_void
);
5526 builtin_type
->builtin_func_ptr
5527 = lookup_pointer_type (lookup_function_type (builtin_type
->builtin_void
));
5528 builtin_type
->builtin_func_func
5529 = lookup_function_type (builtin_type
->builtin_func_ptr
);
5531 /* This type represents a GDB internal function. */
5532 builtin_type
->internal_fn
5533 = arch_type (gdbarch
, TYPE_CODE_INTERNAL_FUNCTION
, 0,
5534 "<internal function>");
5536 /* This type represents an xmethod. */
5537 builtin_type
->xmethod
5538 = arch_type (gdbarch
, TYPE_CODE_XMETHOD
, 0, "<xmethod>");
5540 return builtin_type
;
5543 /* This set of objfile-based types is intended to be used by symbol
5544 readers as basic types. */
5546 static const struct objfile_key
<struct objfile_type
,
5547 gdb::noop_deleter
<struct objfile_type
>>
5550 const struct objfile_type
*
5551 objfile_type (struct objfile
*objfile
)
5553 struct gdbarch
*gdbarch
;
5554 struct objfile_type
*objfile_type
= objfile_type_data
.get (objfile
);
5557 return objfile_type
;
5559 objfile_type
= OBSTACK_CALLOC (&objfile
->objfile_obstack
,
5560 1, struct objfile_type
);
5562 /* Use the objfile architecture to determine basic type properties. */
5563 gdbarch
= get_objfile_arch (objfile
);
5566 objfile_type
->builtin_void
5567 = init_type (objfile
, TYPE_CODE_VOID
, TARGET_CHAR_BIT
, "void");
5568 objfile_type
->builtin_char
5569 = init_integer_type (objfile
, TARGET_CHAR_BIT
,
5570 !gdbarch_char_signed (gdbarch
), "char");
5571 TYPE_NOSIGN (objfile_type
->builtin_char
) = 1;
5572 objfile_type
->builtin_signed_char
5573 = init_integer_type (objfile
, TARGET_CHAR_BIT
,
5575 objfile_type
->builtin_unsigned_char
5576 = init_integer_type (objfile
, TARGET_CHAR_BIT
,
5577 1, "unsigned char");
5578 objfile_type
->builtin_short
5579 = init_integer_type (objfile
, gdbarch_short_bit (gdbarch
),
5581 objfile_type
->builtin_unsigned_short
5582 = init_integer_type (objfile
, gdbarch_short_bit (gdbarch
),
5583 1, "unsigned short");
5584 objfile_type
->builtin_int
5585 = init_integer_type (objfile
, gdbarch_int_bit (gdbarch
),
5587 objfile_type
->builtin_unsigned_int
5588 = init_integer_type (objfile
, gdbarch_int_bit (gdbarch
),
5590 objfile_type
->builtin_long
5591 = init_integer_type (objfile
, gdbarch_long_bit (gdbarch
),
5593 objfile_type
->builtin_unsigned_long
5594 = init_integer_type (objfile
, gdbarch_long_bit (gdbarch
),
5595 1, "unsigned long");
5596 objfile_type
->builtin_long_long
5597 = init_integer_type (objfile
, gdbarch_long_long_bit (gdbarch
),
5599 objfile_type
->builtin_unsigned_long_long
5600 = init_integer_type (objfile
, gdbarch_long_long_bit (gdbarch
),
5601 1, "unsigned long long");
5602 objfile_type
->builtin_float
5603 = init_float_type (objfile
, gdbarch_float_bit (gdbarch
),
5604 "float", gdbarch_float_format (gdbarch
));
5605 objfile_type
->builtin_double
5606 = init_float_type (objfile
, gdbarch_double_bit (gdbarch
),
5607 "double", gdbarch_double_format (gdbarch
));
5608 objfile_type
->builtin_long_double
5609 = init_float_type (objfile
, gdbarch_long_double_bit (gdbarch
),
5610 "long double", gdbarch_long_double_format (gdbarch
));
5612 /* This type represents a type that was unrecognized in symbol read-in. */
5613 objfile_type
->builtin_error
5614 = init_type (objfile
, TYPE_CODE_ERROR
, 0, "<unknown type>");
5616 /* The following set of types is used for symbols with no
5617 debug information. */
5618 objfile_type
->nodebug_text_symbol
5619 = init_type (objfile
, TYPE_CODE_FUNC
, TARGET_CHAR_BIT
,
5620 "<text variable, no debug info>");
5621 objfile_type
->nodebug_text_gnu_ifunc_symbol
5622 = init_type (objfile
, TYPE_CODE_FUNC
, TARGET_CHAR_BIT
,
5623 "<text gnu-indirect-function variable, no debug info>");
5624 TYPE_GNU_IFUNC (objfile_type
->nodebug_text_gnu_ifunc_symbol
) = 1;
5625 objfile_type
->nodebug_got_plt_symbol
5626 = init_pointer_type (objfile
, gdbarch_addr_bit (gdbarch
),
5627 "<text from jump slot in .got.plt, no debug info>",
5628 objfile_type
->nodebug_text_symbol
);
5629 objfile_type
->nodebug_data_symbol
5630 = init_nodebug_var_type (objfile
, "<data variable, no debug info>");
5631 objfile_type
->nodebug_unknown_symbol
5632 = init_nodebug_var_type (objfile
, "<variable (not text or data), no debug info>");
5633 objfile_type
->nodebug_tls_symbol
5634 = init_nodebug_var_type (objfile
, "<thread local variable, no debug info>");
5636 /* NOTE: on some targets, addresses and pointers are not necessarily
5640 - gdb's `struct type' always describes the target's
5642 - gdb's `struct value' objects should always hold values in
5644 - gdb's CORE_ADDR values are addresses in the unified virtual
5645 address space that the assembler and linker work with. Thus,
5646 since target_read_memory takes a CORE_ADDR as an argument, it
5647 can access any memory on the target, even if the processor has
5648 separate code and data address spaces.
5650 In this context, objfile_type->builtin_core_addr is a bit odd:
5651 it's a target type for a value the target will never see. It's
5652 only used to hold the values of (typeless) linker symbols, which
5653 are indeed in the unified virtual address space. */
5655 objfile_type
->builtin_core_addr
5656 = init_integer_type (objfile
, gdbarch_addr_bit (gdbarch
), 1,
5659 objfile_type_data
.set (objfile
, objfile_type
);
5660 return objfile_type
;
5664 _initialize_gdbtypes (void)
5666 gdbtypes_data
= gdbarch_data_register_post_init (gdbtypes_post_init
);
5668 add_setshow_zuinteger_cmd ("overload", no_class
, &overload_debug
,
5669 _("Set debugging of C++ overloading."),
5670 _("Show debugging of C++ overloading."),
5671 _("When enabled, ranking of the "
5672 "functions is displayed."),
5674 show_overload_debug
,
5675 &setdebuglist
, &showdebuglist
);
5677 /* Add user knob for controlling resolution of opaque types. */
5678 add_setshow_boolean_cmd ("opaque-type-resolution", class_support
,
5679 &opaque_type_resolution
,
5680 _("Set resolution of opaque struct/class/union"
5681 " types (if set before loading symbols)."),
5682 _("Show resolution of opaque struct/class/union"
5683 " types (if set before loading symbols)."),
5685 show_opaque_type_resolution
,
5686 &setlist
, &showlist
);
5688 /* Add an option to permit non-strict type checking. */
5689 add_setshow_boolean_cmd ("type", class_support
,
5690 &strict_type_checking
,
5691 _("Set strict type checking."),
5692 _("Show strict type checking."),
5694 show_strict_type_checking
,
5695 &setchecklist
, &showchecklist
);
5698 /* See gdbtypes.h. */
5700 type_byte_order (const struct type
*type
)
5702 bfd_endian byteorder
= gdbarch_byte_order (get_type_arch (type
));
5703 if (TYPE_ENDIANITY_NOT_DEFAULT (type
))
5705 if (byteorder
== BFD_ENDIAN_BIG
)
5706 return BFD_ENDIAN_LITTLE
;
5707 else if (byteorder
== BFD_ENDIAN_LITTLE
)
5708 return BFD_ENDIAN_BIG
;
5710 return BFD_ENDIAN_UNKNOWN
;