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_ARRAY
:
1972 gdb_assert (TYPE_NFIELDS (type
) == 1);
1974 /* The array is dynamic if either the bounds are dynamic... */
1975 if (is_dynamic_type_internal (TYPE_INDEX_TYPE (type
), 0))
1977 /* ... or the elements it contains have a dynamic contents... */
1978 if (is_dynamic_type_internal (TYPE_TARGET_TYPE (type
), 0))
1980 /* ... or if it has a dynamic stride... */
1981 if (array_type_has_dynamic_stride (type
))
1986 case TYPE_CODE_STRUCT
:
1987 case TYPE_CODE_UNION
:
1991 for (i
= 0; i
< TYPE_NFIELDS (type
); ++i
)
1992 if (!field_is_static (&TYPE_FIELD (type
, i
))
1993 && is_dynamic_type_internal (TYPE_FIELD_TYPE (type
, i
), 0))
2002 /* See gdbtypes.h. */
2005 is_dynamic_type (struct type
*type
)
2007 return is_dynamic_type_internal (type
, 1);
2010 static struct type
*resolve_dynamic_type_internal
2011 (struct type
*type
, struct property_addr_info
*addr_stack
, int top_level
);
2013 /* Given a dynamic range type (dyn_range_type) and a stack of
2014 struct property_addr_info elements, return a static version
2017 static struct type
*
2018 resolve_dynamic_range (struct type
*dyn_range_type
,
2019 struct property_addr_info
*addr_stack
)
2022 struct type
*static_range_type
, *static_target_type
;
2023 const struct dynamic_prop
*prop
;
2024 struct dynamic_prop low_bound
, high_bound
, stride
;
2026 gdb_assert (TYPE_CODE (dyn_range_type
) == TYPE_CODE_RANGE
);
2028 prop
= &TYPE_RANGE_DATA (dyn_range_type
)->low
;
2029 if (dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2031 low_bound
.kind
= PROP_CONST
;
2032 low_bound
.data
.const_val
= value
;
2036 low_bound
.kind
= PROP_UNDEFINED
;
2037 low_bound
.data
.const_val
= 0;
2040 prop
= &TYPE_RANGE_DATA (dyn_range_type
)->high
;
2041 if (dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2043 high_bound
.kind
= PROP_CONST
;
2044 high_bound
.data
.const_val
= value
;
2046 if (TYPE_RANGE_DATA (dyn_range_type
)->flag_upper_bound_is_count
)
2047 high_bound
.data
.const_val
2048 = low_bound
.data
.const_val
+ high_bound
.data
.const_val
- 1;
2052 high_bound
.kind
= PROP_UNDEFINED
;
2053 high_bound
.data
.const_val
= 0;
2056 bool byte_stride_p
= TYPE_RANGE_DATA (dyn_range_type
)->flag_is_byte_stride
;
2057 prop
= &TYPE_RANGE_DATA (dyn_range_type
)->stride
;
2058 if (dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2060 stride
.kind
= PROP_CONST
;
2061 stride
.data
.const_val
= value
;
2063 /* If we have a bit stride that is not an exact number of bytes then
2064 I really don't think this is going to work with current GDB, the
2065 array indexing code in GDB seems to be pretty heavily tied to byte
2066 offsets right now. Assuming 8 bits in a byte. */
2067 struct gdbarch
*gdbarch
= get_type_arch (dyn_range_type
);
2068 int unit_size
= gdbarch_addressable_memory_unit_size (gdbarch
);
2069 if (!byte_stride_p
&& (value
% (unit_size
* 8)) != 0)
2070 error (_("bit strides that are not a multiple of the byte size "
2071 "are currently not supported"));
2075 stride
.kind
= PROP_UNDEFINED
;
2076 stride
.data
.const_val
= 0;
2077 byte_stride_p
= true;
2081 = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (dyn_range_type
),
2083 LONGEST bias
= TYPE_RANGE_DATA (dyn_range_type
)->bias
;
2084 static_range_type
= create_range_type_with_stride
2085 (copy_type (dyn_range_type
), static_target_type
,
2086 &low_bound
, &high_bound
, bias
, &stride
, byte_stride_p
);
2087 TYPE_RANGE_DATA (static_range_type
)->flag_bound_evaluated
= 1;
2088 return static_range_type
;
2091 /* Resolves dynamic bound values of an array type TYPE to static ones.
2092 ADDR_STACK is a stack of struct property_addr_info to be used
2093 if needed during the dynamic resolution. */
2095 static struct type
*
2096 resolve_dynamic_array (struct type
*type
,
2097 struct property_addr_info
*addr_stack
)
2100 struct type
*elt_type
;
2101 struct type
*range_type
;
2102 struct type
*ary_dim
;
2103 struct dynamic_prop
*prop
;
2104 unsigned int bit_stride
= 0;
2106 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_ARRAY
);
2108 type
= copy_type (type
);
2111 range_type
= check_typedef (TYPE_INDEX_TYPE (elt_type
));
2112 range_type
= resolve_dynamic_range (range_type
, addr_stack
);
2114 /* Resolve allocated/associated here before creating a new array type, which
2115 will update the length of the array accordingly. */
2116 prop
= TYPE_ALLOCATED_PROP (type
);
2117 if (prop
!= NULL
&& dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2119 TYPE_DYN_PROP_ADDR (prop
) = value
;
2120 TYPE_DYN_PROP_KIND (prop
) = PROP_CONST
;
2122 prop
= TYPE_ASSOCIATED_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
;
2129 ary_dim
= check_typedef (TYPE_TARGET_TYPE (elt_type
));
2131 if (ary_dim
!= NULL
&& TYPE_CODE (ary_dim
) == TYPE_CODE_ARRAY
)
2132 elt_type
= resolve_dynamic_array (ary_dim
, addr_stack
);
2134 elt_type
= TYPE_TARGET_TYPE (type
);
2136 prop
= get_dyn_prop (DYN_PROP_BYTE_STRIDE
, type
);
2139 if (dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2141 remove_dyn_prop (DYN_PROP_BYTE_STRIDE
, type
);
2142 bit_stride
= (unsigned int) (value
* 8);
2146 /* Could be a bug in our code, but it could also happen
2147 if the DWARF info is not correct. Issue a warning,
2148 and assume no byte/bit stride (leave bit_stride = 0). */
2149 warning (_("cannot determine array stride for type %s"),
2150 TYPE_NAME (type
) ? TYPE_NAME (type
) : "<no name>");
2154 bit_stride
= TYPE_FIELD_BITSIZE (type
, 0);
2156 return create_array_type_with_stride (type
, elt_type
, range_type
, NULL
,
2160 /* Resolve dynamic bounds of members of the union TYPE to static
2161 bounds. ADDR_STACK is a stack of struct property_addr_info
2162 to be used if needed during the dynamic resolution. */
2164 static struct type
*
2165 resolve_dynamic_union (struct type
*type
,
2166 struct property_addr_info
*addr_stack
)
2168 struct type
*resolved_type
;
2170 unsigned int max_len
= 0;
2172 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_UNION
);
2174 resolved_type
= copy_type (type
);
2175 TYPE_FIELDS (resolved_type
)
2176 = (struct field
*) TYPE_ALLOC (resolved_type
,
2177 TYPE_NFIELDS (resolved_type
)
2178 * sizeof (struct field
));
2179 memcpy (TYPE_FIELDS (resolved_type
),
2181 TYPE_NFIELDS (resolved_type
) * sizeof (struct field
));
2182 for (i
= 0; i
< TYPE_NFIELDS (resolved_type
); ++i
)
2186 if (field_is_static (&TYPE_FIELD (type
, i
)))
2189 t
= resolve_dynamic_type_internal (TYPE_FIELD_TYPE (resolved_type
, i
),
2191 TYPE_FIELD_TYPE (resolved_type
, i
) = t
;
2192 if (TYPE_LENGTH (t
) > max_len
)
2193 max_len
= TYPE_LENGTH (t
);
2196 TYPE_LENGTH (resolved_type
) = max_len
;
2197 return resolved_type
;
2200 /* Resolve dynamic bounds of members of the struct TYPE to static
2201 bounds. ADDR_STACK is a stack of struct property_addr_info to
2202 be used if needed during the dynamic resolution. */
2204 static struct type
*
2205 resolve_dynamic_struct (struct type
*type
,
2206 struct property_addr_info
*addr_stack
)
2208 struct type
*resolved_type
;
2210 unsigned resolved_type_bit_length
= 0;
2212 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_STRUCT
);
2213 gdb_assert (TYPE_NFIELDS (type
) > 0);
2215 resolved_type
= copy_type (type
);
2216 TYPE_FIELDS (resolved_type
)
2217 = (struct field
*) TYPE_ALLOC (resolved_type
,
2218 TYPE_NFIELDS (resolved_type
)
2219 * sizeof (struct field
));
2220 memcpy (TYPE_FIELDS (resolved_type
),
2222 TYPE_NFIELDS (resolved_type
) * sizeof (struct field
));
2223 for (i
= 0; i
< TYPE_NFIELDS (resolved_type
); ++i
)
2225 unsigned new_bit_length
;
2226 struct property_addr_info pinfo
;
2228 if (field_is_static (&TYPE_FIELD (type
, i
)))
2231 /* As we know this field is not a static field, the field's
2232 field_loc_kind should be FIELD_LOC_KIND_BITPOS. Verify
2233 this is the case, but only trigger a simple error rather
2234 than an internal error if that fails. While failing
2235 that verification indicates a bug in our code, the error
2236 is not severe enough to suggest to the user he stops
2237 his debugging session because of it. */
2238 if (TYPE_FIELD_LOC_KIND (type
, i
) != FIELD_LOC_KIND_BITPOS
)
2239 error (_("Cannot determine struct field location"
2240 " (invalid location kind)"));
2242 pinfo
.type
= check_typedef (TYPE_FIELD_TYPE (type
, i
));
2243 pinfo
.valaddr
= addr_stack
->valaddr
;
2246 + (TYPE_FIELD_BITPOS (resolved_type
, i
) / TARGET_CHAR_BIT
));
2247 pinfo
.next
= addr_stack
;
2249 TYPE_FIELD_TYPE (resolved_type
, i
)
2250 = resolve_dynamic_type_internal (TYPE_FIELD_TYPE (resolved_type
, i
),
2252 gdb_assert (TYPE_FIELD_LOC_KIND (resolved_type
, i
)
2253 == FIELD_LOC_KIND_BITPOS
);
2255 new_bit_length
= TYPE_FIELD_BITPOS (resolved_type
, i
);
2256 if (TYPE_FIELD_BITSIZE (resolved_type
, i
) != 0)
2257 new_bit_length
+= TYPE_FIELD_BITSIZE (resolved_type
, i
);
2259 new_bit_length
+= (TYPE_LENGTH (TYPE_FIELD_TYPE (resolved_type
, i
))
2262 /* Normally, we would use the position and size of the last field
2263 to determine the size of the enclosing structure. But GCC seems
2264 to be encoding the position of some fields incorrectly when
2265 the struct contains a dynamic field that is not placed last.
2266 So we compute the struct size based on the field that has
2267 the highest position + size - probably the best we can do. */
2268 if (new_bit_length
> resolved_type_bit_length
)
2269 resolved_type_bit_length
= new_bit_length
;
2272 /* The length of a type won't change for fortran, but it does for C and Ada.
2273 For fortran the size of dynamic fields might change over time but not the
2274 type length of the structure. If we adapt it, we run into problems
2275 when calculating the element offset for arrays of structs. */
2276 if (current_language
->la_language
!= language_fortran
)
2277 TYPE_LENGTH (resolved_type
)
2278 = (resolved_type_bit_length
+ TARGET_CHAR_BIT
- 1) / TARGET_CHAR_BIT
;
2280 /* The Ada language uses this field as a cache for static fixed types: reset
2281 it as RESOLVED_TYPE must have its own static fixed type. */
2282 TYPE_TARGET_TYPE (resolved_type
) = NULL
;
2284 return resolved_type
;
2287 /* Worker for resolved_dynamic_type. */
2289 static struct type
*
2290 resolve_dynamic_type_internal (struct type
*type
,
2291 struct property_addr_info
*addr_stack
,
2294 struct type
*real_type
= check_typedef (type
);
2295 struct type
*resolved_type
= type
;
2296 struct dynamic_prop
*prop
;
2299 if (!is_dynamic_type_internal (real_type
, top_level
))
2302 if (TYPE_CODE (type
) == TYPE_CODE_TYPEDEF
)
2304 resolved_type
= copy_type (type
);
2305 TYPE_TARGET_TYPE (resolved_type
)
2306 = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (type
), addr_stack
,
2311 /* Before trying to resolve TYPE, make sure it is not a stub. */
2314 switch (TYPE_CODE (type
))
2318 struct property_addr_info pinfo
;
2320 pinfo
.type
= check_typedef (TYPE_TARGET_TYPE (type
));
2321 pinfo
.valaddr
= NULL
;
2322 if (addr_stack
->valaddr
!= NULL
)
2323 pinfo
.addr
= extract_typed_address (addr_stack
->valaddr
, type
);
2325 pinfo
.addr
= read_memory_typed_address (addr_stack
->addr
, type
);
2326 pinfo
.next
= addr_stack
;
2328 resolved_type
= copy_type (type
);
2329 TYPE_TARGET_TYPE (resolved_type
)
2330 = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (type
),
2335 case TYPE_CODE_ARRAY
:
2336 resolved_type
= resolve_dynamic_array (type
, addr_stack
);
2339 case TYPE_CODE_RANGE
:
2340 resolved_type
= resolve_dynamic_range (type
, addr_stack
);
2343 case TYPE_CODE_UNION
:
2344 resolved_type
= resolve_dynamic_union (type
, addr_stack
);
2347 case TYPE_CODE_STRUCT
:
2348 resolved_type
= resolve_dynamic_struct (type
, addr_stack
);
2353 /* Resolve data_location attribute. */
2354 prop
= TYPE_DATA_LOCATION (resolved_type
);
2356 && dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2358 TYPE_DYN_PROP_ADDR (prop
) = value
;
2359 TYPE_DYN_PROP_KIND (prop
) = PROP_CONST
;
2362 return resolved_type
;
2365 /* See gdbtypes.h */
2368 resolve_dynamic_type (struct type
*type
, const gdb_byte
*valaddr
,
2371 struct property_addr_info pinfo
2372 = {check_typedef (type
), valaddr
, addr
, NULL
};
2374 return resolve_dynamic_type_internal (type
, &pinfo
, 1);
2377 /* See gdbtypes.h */
2379 struct dynamic_prop
*
2380 get_dyn_prop (enum dynamic_prop_node_kind prop_kind
, const struct type
*type
)
2382 struct dynamic_prop_list
*node
= TYPE_DYN_PROP_LIST (type
);
2384 while (node
!= NULL
)
2386 if (node
->prop_kind
== prop_kind
)
2393 /* See gdbtypes.h */
2396 add_dyn_prop (enum dynamic_prop_node_kind prop_kind
, struct dynamic_prop prop
,
2399 struct dynamic_prop_list
*temp
;
2401 gdb_assert (TYPE_OBJFILE_OWNED (type
));
2403 temp
= XOBNEW (&TYPE_OBJFILE (type
)->objfile_obstack
,
2404 struct dynamic_prop_list
);
2405 temp
->prop_kind
= prop_kind
;
2407 temp
->next
= TYPE_DYN_PROP_LIST (type
);
2409 TYPE_DYN_PROP_LIST (type
) = temp
;
2412 /* Remove dynamic property from TYPE in case it exists. */
2415 remove_dyn_prop (enum dynamic_prop_node_kind prop_kind
,
2418 struct dynamic_prop_list
*prev_node
, *curr_node
;
2420 curr_node
= TYPE_DYN_PROP_LIST (type
);
2423 while (NULL
!= curr_node
)
2425 if (curr_node
->prop_kind
== prop_kind
)
2427 /* Update the linked list but don't free anything.
2428 The property was allocated on objstack and it is not known
2429 if we are on top of it. Nevertheless, everything is released
2430 when the complete objstack is freed. */
2431 if (NULL
== prev_node
)
2432 TYPE_DYN_PROP_LIST (type
) = curr_node
->next
;
2434 prev_node
->next
= curr_node
->next
;
2439 prev_node
= curr_node
;
2440 curr_node
= curr_node
->next
;
2444 /* Find the real type of TYPE. This function returns the real type,
2445 after removing all layers of typedefs, and completing opaque or stub
2446 types. Completion changes the TYPE argument, but stripping of
2449 Instance flags (e.g. const/volatile) are preserved as typedefs are
2450 stripped. If necessary a new qualified form of the underlying type
2453 NOTE: This will return a typedef if TYPE_TARGET_TYPE for the typedef has
2454 not been computed and we're either in the middle of reading symbols, or
2455 there was no name for the typedef in the debug info.
2457 NOTE: Lookup of opaque types can throw errors for invalid symbol files.
2458 QUITs in the symbol reading code can also throw.
2459 Thus this function can throw an exception.
2461 If TYPE is a TYPE_CODE_TYPEDEF, its length is updated to the length of
2464 If this is a stubbed struct (i.e. declared as struct foo *), see if
2465 we can find a full definition in some other file. If so, copy this
2466 definition, so we can use it in future. There used to be a comment
2467 (but not any code) that if we don't find a full definition, we'd
2468 set a flag so we don't spend time in the future checking the same
2469 type. That would be a mistake, though--we might load in more
2470 symbols which contain a full definition for the type. */
2473 check_typedef (struct type
*type
)
2475 struct type
*orig_type
= type
;
2476 /* While we're removing typedefs, we don't want to lose qualifiers.
2477 E.g., const/volatile. */
2478 int instance_flags
= TYPE_INSTANCE_FLAGS (type
);
2482 while (TYPE_CODE (type
) == TYPE_CODE_TYPEDEF
)
2484 if (!TYPE_TARGET_TYPE (type
))
2489 /* It is dangerous to call lookup_symbol if we are currently
2490 reading a symtab. Infinite recursion is one danger. */
2491 if (currently_reading_symtab
)
2492 return make_qualified_type (type
, instance_flags
, NULL
);
2494 name
= TYPE_NAME (type
);
2495 /* FIXME: shouldn't we look in STRUCT_DOMAIN and/or
2496 VAR_DOMAIN as appropriate? */
2499 stub_noname_complaint ();
2500 return make_qualified_type (type
, instance_flags
, NULL
);
2502 sym
= lookup_symbol (name
, 0, STRUCT_DOMAIN
, 0).symbol
;
2504 TYPE_TARGET_TYPE (type
) = SYMBOL_TYPE (sym
);
2505 else /* TYPE_CODE_UNDEF */
2506 TYPE_TARGET_TYPE (type
) = alloc_type_arch (get_type_arch (type
));
2508 type
= TYPE_TARGET_TYPE (type
);
2510 /* Preserve the instance flags as we traverse down the typedef chain.
2512 Handling address spaces/classes is nasty, what do we do if there's a
2514 E.g., what if an outer typedef marks the type as class_1 and an inner
2515 typedef marks the type as class_2?
2516 This is the wrong place to do such error checking. We leave it to
2517 the code that created the typedef in the first place to flag the
2518 error. We just pick the outer address space (akin to letting the
2519 outer cast in a chain of casting win), instead of assuming
2520 "it can't happen". */
2522 const int ALL_SPACES
= (TYPE_INSTANCE_FLAG_CODE_SPACE
2523 | TYPE_INSTANCE_FLAG_DATA_SPACE
);
2524 const int ALL_CLASSES
= TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL
;
2525 int new_instance_flags
= TYPE_INSTANCE_FLAGS (type
);
2527 /* Treat code vs data spaces and address classes separately. */
2528 if ((instance_flags
& ALL_SPACES
) != 0)
2529 new_instance_flags
&= ~ALL_SPACES
;
2530 if ((instance_flags
& ALL_CLASSES
) != 0)
2531 new_instance_flags
&= ~ALL_CLASSES
;
2533 instance_flags
|= new_instance_flags
;
2537 /* If this is a struct/class/union with no fields, then check
2538 whether a full definition exists somewhere else. This is for
2539 systems where a type definition with no fields is issued for such
2540 types, instead of identifying them as stub types in the first
2543 if (TYPE_IS_OPAQUE (type
)
2544 && opaque_type_resolution
2545 && !currently_reading_symtab
)
2547 const char *name
= TYPE_NAME (type
);
2548 struct type
*newtype
;
2552 stub_noname_complaint ();
2553 return make_qualified_type (type
, instance_flags
, NULL
);
2555 newtype
= lookup_transparent_type (name
);
2559 /* If the resolved type and the stub are in the same
2560 objfile, then replace the stub type with the real deal.
2561 But if they're in separate objfiles, leave the stub
2562 alone; we'll just look up the transparent type every time
2563 we call check_typedef. We can't create pointers between
2564 types allocated to different objfiles, since they may
2565 have different lifetimes. Trying to copy NEWTYPE over to
2566 TYPE's objfile is pointless, too, since you'll have to
2567 move over any other types NEWTYPE refers to, which could
2568 be an unbounded amount of stuff. */
2569 if (TYPE_OBJFILE (newtype
) == TYPE_OBJFILE (type
))
2570 type
= make_qualified_type (newtype
,
2571 TYPE_INSTANCE_FLAGS (type
),
2577 /* Otherwise, rely on the stub flag being set for opaque/stubbed
2579 else if (TYPE_STUB (type
) && !currently_reading_symtab
)
2581 const char *name
= TYPE_NAME (type
);
2582 /* FIXME: shouldn't we look in STRUCT_DOMAIN and/or VAR_DOMAIN
2588 stub_noname_complaint ();
2589 return make_qualified_type (type
, instance_flags
, NULL
);
2591 sym
= lookup_symbol (name
, 0, STRUCT_DOMAIN
, 0).symbol
;
2594 /* Same as above for opaque types, we can replace the stub
2595 with the complete type only if they are in the same
2597 if (TYPE_OBJFILE (SYMBOL_TYPE(sym
)) == TYPE_OBJFILE (type
))
2598 type
= make_qualified_type (SYMBOL_TYPE (sym
),
2599 TYPE_INSTANCE_FLAGS (type
),
2602 type
= SYMBOL_TYPE (sym
);
2606 if (TYPE_TARGET_STUB (type
))
2608 struct type
*target_type
= check_typedef (TYPE_TARGET_TYPE (type
));
2610 if (TYPE_STUB (target_type
) || TYPE_TARGET_STUB (target_type
))
2612 /* Nothing we can do. */
2614 else if (TYPE_CODE (type
) == TYPE_CODE_RANGE
)
2616 TYPE_LENGTH (type
) = TYPE_LENGTH (target_type
);
2617 TYPE_TARGET_STUB (type
) = 0;
2621 type
= make_qualified_type (type
, instance_flags
, NULL
);
2623 /* Cache TYPE_LENGTH for future use. */
2624 TYPE_LENGTH (orig_type
) = TYPE_LENGTH (type
);
2629 /* Parse a type expression in the string [P..P+LENGTH). If an error
2630 occurs, silently return a void type. */
2632 static struct type
*
2633 safe_parse_type (struct gdbarch
*gdbarch
, char *p
, int length
)
2635 struct ui_file
*saved_gdb_stderr
;
2636 struct type
*type
= NULL
; /* Initialize to keep gcc happy. */
2638 /* Suppress error messages. */
2639 saved_gdb_stderr
= gdb_stderr
;
2640 gdb_stderr
= &null_stream
;
2642 /* Call parse_and_eval_type() without fear of longjmp()s. */
2645 type
= parse_and_eval_type (p
, length
);
2647 catch (const gdb_exception_error
&except
)
2649 type
= builtin_type (gdbarch
)->builtin_void
;
2652 /* Stop suppressing error messages. */
2653 gdb_stderr
= saved_gdb_stderr
;
2658 /* Ugly hack to convert method stubs into method types.
2660 He ain't kiddin'. This demangles the name of the method into a
2661 string including argument types, parses out each argument type,
2662 generates a string casting a zero to that type, evaluates the
2663 string, and stuffs the resulting type into an argtype vector!!!
2664 Then it knows the type of the whole function (including argument
2665 types for overloading), which info used to be in the stab's but was
2666 removed to hack back the space required for them. */
2669 check_stub_method (struct type
*type
, int method_id
, int signature_id
)
2671 struct gdbarch
*gdbarch
= get_type_arch (type
);
2673 char *mangled_name
= gdb_mangle_name (type
, method_id
, signature_id
);
2674 char *demangled_name
= gdb_demangle (mangled_name
,
2675 DMGL_PARAMS
| DMGL_ANSI
);
2676 char *argtypetext
, *p
;
2677 int depth
= 0, argcount
= 1;
2678 struct field
*argtypes
;
2681 /* Make sure we got back a function string that we can use. */
2683 p
= strchr (demangled_name
, '(');
2687 if (demangled_name
== NULL
|| p
== NULL
)
2688 error (_("Internal: Cannot demangle mangled name `%s'."),
2691 /* Now, read in the parameters that define this type. */
2696 if (*p
== '(' || *p
== '<')
2700 else if (*p
== ')' || *p
== '>')
2704 else if (*p
== ',' && depth
== 0)
2712 /* If we read one argument and it was ``void'', don't count it. */
2713 if (startswith (argtypetext
, "(void)"))
2716 /* We need one extra slot, for the THIS pointer. */
2718 argtypes
= (struct field
*)
2719 TYPE_ALLOC (type
, (argcount
+ 1) * sizeof (struct field
));
2722 /* Add THIS pointer for non-static methods. */
2723 f
= TYPE_FN_FIELDLIST1 (type
, method_id
);
2724 if (TYPE_FN_FIELD_STATIC_P (f
, signature_id
))
2728 argtypes
[0].type
= lookup_pointer_type (type
);
2732 if (*p
!= ')') /* () means no args, skip while. */
2737 if (depth
<= 0 && (*p
== ',' || *p
== ')'))
2739 /* Avoid parsing of ellipsis, they will be handled below.
2740 Also avoid ``void'' as above. */
2741 if (strncmp (argtypetext
, "...", p
- argtypetext
) != 0
2742 && strncmp (argtypetext
, "void", p
- argtypetext
) != 0)
2744 argtypes
[argcount
].type
=
2745 safe_parse_type (gdbarch
, argtypetext
, p
- argtypetext
);
2748 argtypetext
= p
+ 1;
2751 if (*p
== '(' || *p
== '<')
2755 else if (*p
== ')' || *p
== '>')
2764 TYPE_FN_FIELD_PHYSNAME (f
, signature_id
) = mangled_name
;
2766 /* Now update the old "stub" type into a real type. */
2767 mtype
= TYPE_FN_FIELD_TYPE (f
, signature_id
);
2768 /* MTYPE may currently be a function (TYPE_CODE_FUNC).
2769 We want a method (TYPE_CODE_METHOD). */
2770 smash_to_method_type (mtype
, type
, TYPE_TARGET_TYPE (mtype
),
2771 argtypes
, argcount
, p
[-2] == '.');
2772 TYPE_STUB (mtype
) = 0;
2773 TYPE_FN_FIELD_STUB (f
, signature_id
) = 0;
2775 xfree (demangled_name
);
2778 /* This is the external interface to check_stub_method, above. This
2779 function unstubs all of the signatures for TYPE's METHOD_ID method
2780 name. After calling this function TYPE_FN_FIELD_STUB will be
2781 cleared for each signature and TYPE_FN_FIELDLIST_NAME will be
2784 This function unfortunately can not die until stabs do. */
2787 check_stub_method_group (struct type
*type
, int method_id
)
2789 int len
= TYPE_FN_FIELDLIST_LENGTH (type
, method_id
);
2790 struct fn_field
*f
= TYPE_FN_FIELDLIST1 (type
, method_id
);
2792 for (int j
= 0; j
< len
; j
++)
2794 if (TYPE_FN_FIELD_STUB (f
, j
))
2795 check_stub_method (type
, method_id
, j
);
2799 /* Ensure it is in .rodata (if available) by working around GCC PR 44690. */
2800 const struct cplus_struct_type cplus_struct_default
= { };
2803 allocate_cplus_struct_type (struct type
*type
)
2805 if (HAVE_CPLUS_STRUCT (type
))
2806 /* Structure was already allocated. Nothing more to do. */
2809 TYPE_SPECIFIC_FIELD (type
) = TYPE_SPECIFIC_CPLUS_STUFF
;
2810 TYPE_RAW_CPLUS_SPECIFIC (type
) = (struct cplus_struct_type
*)
2811 TYPE_ALLOC (type
, sizeof (struct cplus_struct_type
));
2812 *(TYPE_RAW_CPLUS_SPECIFIC (type
)) = cplus_struct_default
;
2813 set_type_vptr_fieldno (type
, -1);
2816 const struct gnat_aux_type gnat_aux_default
=
2819 /* Set the TYPE's type-specific kind to TYPE_SPECIFIC_GNAT_STUFF,
2820 and allocate the associated gnat-specific data. The gnat-specific
2821 data is also initialized to gnat_aux_default. */
2824 allocate_gnat_aux_type (struct type
*type
)
2826 TYPE_SPECIFIC_FIELD (type
) = TYPE_SPECIFIC_GNAT_STUFF
;
2827 TYPE_GNAT_SPECIFIC (type
) = (struct gnat_aux_type
*)
2828 TYPE_ALLOC (type
, sizeof (struct gnat_aux_type
));
2829 *(TYPE_GNAT_SPECIFIC (type
)) = gnat_aux_default
;
2832 /* Helper function to initialize a newly allocated type. Set type code
2833 to CODE and initialize the type-specific fields accordingly. */
2836 set_type_code (struct type
*type
, enum type_code code
)
2838 TYPE_CODE (type
) = code
;
2842 case TYPE_CODE_STRUCT
:
2843 case TYPE_CODE_UNION
:
2844 case TYPE_CODE_NAMESPACE
:
2845 INIT_CPLUS_SPECIFIC (type
);
2848 TYPE_SPECIFIC_FIELD (type
) = TYPE_SPECIFIC_FLOATFORMAT
;
2850 case TYPE_CODE_FUNC
:
2851 INIT_FUNC_SPECIFIC (type
);
2856 /* Helper function to verify floating-point format and size.
2857 BIT is the type size in bits; if BIT equals -1, the size is
2858 determined by the floatformat. Returns size to be used. */
2861 verify_floatformat (int bit
, const struct floatformat
*floatformat
)
2863 gdb_assert (floatformat
!= NULL
);
2866 bit
= floatformat
->totalsize
;
2868 gdb_assert (bit
>= 0);
2869 gdb_assert (bit
>= floatformat
->totalsize
);
2874 /* Return the floating-point format for a floating-point variable of
2877 const struct floatformat
*
2878 floatformat_from_type (const struct type
*type
)
2880 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_FLT
);
2881 gdb_assert (TYPE_FLOATFORMAT (type
));
2882 return TYPE_FLOATFORMAT (type
);
2885 /* Helper function to initialize the standard scalar types.
2887 If NAME is non-NULL, then it is used to initialize the type name.
2888 Note that NAME is not copied; it is required to have a lifetime at
2889 least as long as OBJFILE. */
2892 init_type (struct objfile
*objfile
, enum type_code code
, int bit
,
2897 type
= alloc_type (objfile
);
2898 set_type_code (type
, code
);
2899 gdb_assert ((bit
% TARGET_CHAR_BIT
) == 0);
2900 TYPE_LENGTH (type
) = bit
/ TARGET_CHAR_BIT
;
2901 TYPE_NAME (type
) = name
;
2906 /* Allocate a TYPE_CODE_ERROR type structure associated with OBJFILE,
2907 to use with variables that have no debug info. NAME is the type
2910 static struct type
*
2911 init_nodebug_var_type (struct objfile
*objfile
, const char *name
)
2913 return init_type (objfile
, TYPE_CODE_ERROR
, 0, name
);
2916 /* Allocate a TYPE_CODE_INT type structure associated with OBJFILE.
2917 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
2918 the type's TYPE_UNSIGNED flag. NAME is the type name. */
2921 init_integer_type (struct objfile
*objfile
,
2922 int bit
, int unsigned_p
, const char *name
)
2926 t
= init_type (objfile
, TYPE_CODE_INT
, bit
, name
);
2928 TYPE_UNSIGNED (t
) = 1;
2933 /* Allocate a TYPE_CODE_CHAR type structure associated with OBJFILE.
2934 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
2935 the type's TYPE_UNSIGNED flag. NAME is the type name. */
2938 init_character_type (struct objfile
*objfile
,
2939 int bit
, int unsigned_p
, const char *name
)
2943 t
= init_type (objfile
, TYPE_CODE_CHAR
, bit
, name
);
2945 TYPE_UNSIGNED (t
) = 1;
2950 /* Allocate a TYPE_CODE_BOOL type structure associated with OBJFILE.
2951 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
2952 the type's TYPE_UNSIGNED flag. NAME is the type name. */
2955 init_boolean_type (struct objfile
*objfile
,
2956 int bit
, int unsigned_p
, const char *name
)
2960 t
= init_type (objfile
, TYPE_CODE_BOOL
, bit
, name
);
2962 TYPE_UNSIGNED (t
) = 1;
2967 /* Allocate a TYPE_CODE_FLT type structure associated with OBJFILE.
2968 BIT is the type size in bits; if BIT equals -1, the size is
2969 determined by the floatformat. NAME is the type name. Set the
2970 TYPE_FLOATFORMAT from FLOATFORMATS. */
2973 init_float_type (struct objfile
*objfile
,
2974 int bit
, const char *name
,
2975 const struct floatformat
**floatformats
)
2977 struct gdbarch
*gdbarch
= get_objfile_arch (objfile
);
2978 const struct floatformat
*fmt
= floatformats
[gdbarch_byte_order (gdbarch
)];
2981 bit
= verify_floatformat (bit
, fmt
);
2982 t
= init_type (objfile
, TYPE_CODE_FLT
, bit
, name
);
2983 TYPE_FLOATFORMAT (t
) = fmt
;
2988 /* Allocate a TYPE_CODE_DECFLOAT type structure associated with OBJFILE.
2989 BIT is the type size in bits. NAME is the type name. */
2992 init_decfloat_type (struct objfile
*objfile
, int bit
, const char *name
)
2996 t
= init_type (objfile
, TYPE_CODE_DECFLOAT
, bit
, name
);
3000 /* Allocate a TYPE_CODE_COMPLEX type structure associated with OBJFILE.
3001 NAME is the type name. TARGET_TYPE is the component float type. */
3004 init_complex_type (struct objfile
*objfile
,
3005 const char *name
, struct type
*target_type
)
3009 t
= init_type (objfile
, TYPE_CODE_COMPLEX
,
3010 2 * TYPE_LENGTH (target_type
) * TARGET_CHAR_BIT
, name
);
3011 TYPE_TARGET_TYPE (t
) = target_type
;
3015 /* Allocate a TYPE_CODE_PTR type structure associated with OBJFILE.
3016 BIT is the pointer type size in bits. NAME is the type name.
3017 TARGET_TYPE is the pointer target type. Always sets the pointer type's
3018 TYPE_UNSIGNED flag. */
3021 init_pointer_type (struct objfile
*objfile
,
3022 int bit
, const char *name
, struct type
*target_type
)
3026 t
= init_type (objfile
, TYPE_CODE_PTR
, bit
, name
);
3027 TYPE_TARGET_TYPE (t
) = target_type
;
3028 TYPE_UNSIGNED (t
) = 1;
3032 /* See gdbtypes.h. */
3035 type_raw_align (struct type
*type
)
3037 if (type
->align_log2
!= 0)
3038 return 1 << (type
->align_log2
- 1);
3042 /* See gdbtypes.h. */
3045 type_align (struct type
*type
)
3047 /* Check alignment provided in the debug information. */
3048 unsigned raw_align
= type_raw_align (type
);
3052 /* Allow the architecture to provide an alignment. */
3053 struct gdbarch
*arch
= get_type_arch (type
);
3054 ULONGEST align
= gdbarch_type_align (arch
, type
);
3058 switch (TYPE_CODE (type
))
3061 case TYPE_CODE_FUNC
:
3062 case TYPE_CODE_FLAGS
:
3064 case TYPE_CODE_RANGE
:
3066 case TYPE_CODE_ENUM
:
3068 case TYPE_CODE_RVALUE_REF
:
3069 case TYPE_CODE_CHAR
:
3070 case TYPE_CODE_BOOL
:
3071 case TYPE_CODE_DECFLOAT
:
3072 case TYPE_CODE_METHODPTR
:
3073 case TYPE_CODE_MEMBERPTR
:
3074 align
= type_length_units (check_typedef (type
));
3077 case TYPE_CODE_ARRAY
:
3078 case TYPE_CODE_COMPLEX
:
3079 case TYPE_CODE_TYPEDEF
:
3080 align
= type_align (TYPE_TARGET_TYPE (type
));
3083 case TYPE_CODE_STRUCT
:
3084 case TYPE_CODE_UNION
:
3086 int number_of_non_static_fields
= 0;
3087 for (unsigned i
= 0; i
< TYPE_NFIELDS (type
); ++i
)
3089 if (!field_is_static (&TYPE_FIELD (type
, i
)))
3091 number_of_non_static_fields
++;
3092 ULONGEST f_align
= type_align (TYPE_FIELD_TYPE (type
, i
));
3095 /* Don't pretend we know something we don't. */
3099 if (f_align
> align
)
3103 /* A struct with no fields, or with only static fields has an
3105 if (number_of_non_static_fields
== 0)
3111 case TYPE_CODE_STRING
:
3112 /* Not sure what to do here, and these can't appear in C or C++
3116 case TYPE_CODE_VOID
:
3120 case TYPE_CODE_ERROR
:
3121 case TYPE_CODE_METHOD
:
3126 if ((align
& (align
- 1)) != 0)
3128 /* Not a power of 2, so pass. */
3135 /* See gdbtypes.h. */
3138 set_type_align (struct type
*type
, ULONGEST align
)
3140 /* Must be a power of 2. Zero is ok. */
3141 gdb_assert ((align
& (align
- 1)) == 0);
3143 unsigned result
= 0;
3150 if (result
>= (1 << TYPE_ALIGN_BITS
))
3153 type
->align_log2
= result
;
3158 /* Queries on types. */
3161 can_dereference (struct type
*t
)
3163 /* FIXME: Should we return true for references as well as
3165 t
= check_typedef (t
);
3168 && TYPE_CODE (t
) == TYPE_CODE_PTR
3169 && TYPE_CODE (TYPE_TARGET_TYPE (t
)) != TYPE_CODE_VOID
);
3173 is_integral_type (struct type
*t
)
3175 t
= check_typedef (t
);
3178 && ((TYPE_CODE (t
) == TYPE_CODE_INT
)
3179 || (TYPE_CODE (t
) == TYPE_CODE_ENUM
)
3180 || (TYPE_CODE (t
) == TYPE_CODE_FLAGS
)
3181 || (TYPE_CODE (t
) == TYPE_CODE_CHAR
)
3182 || (TYPE_CODE (t
) == TYPE_CODE_RANGE
)
3183 || (TYPE_CODE (t
) == TYPE_CODE_BOOL
)));
3187 is_floating_type (struct type
*t
)
3189 t
= check_typedef (t
);
3192 && ((TYPE_CODE (t
) == TYPE_CODE_FLT
)
3193 || (TYPE_CODE (t
) == TYPE_CODE_DECFLOAT
)));
3196 /* Return true if TYPE is scalar. */
3199 is_scalar_type (struct type
*type
)
3201 type
= check_typedef (type
);
3203 switch (TYPE_CODE (type
))
3205 case TYPE_CODE_ARRAY
:
3206 case TYPE_CODE_STRUCT
:
3207 case TYPE_CODE_UNION
:
3209 case TYPE_CODE_STRING
:
3216 /* Return true if T is scalar, or a composite type which in practice has
3217 the memory layout of a scalar type. E.g., an array or struct with only
3218 one scalar element inside it, or a union with only scalar elements. */
3221 is_scalar_type_recursive (struct type
*t
)
3223 t
= check_typedef (t
);
3225 if (is_scalar_type (t
))
3227 /* Are we dealing with an array or string of known dimensions? */
3228 else if ((TYPE_CODE (t
) == TYPE_CODE_ARRAY
3229 || TYPE_CODE (t
) == TYPE_CODE_STRING
) && TYPE_NFIELDS (t
) == 1
3230 && TYPE_CODE (TYPE_INDEX_TYPE (t
)) == TYPE_CODE_RANGE
)
3232 LONGEST low_bound
, high_bound
;
3233 struct type
*elt_type
= check_typedef (TYPE_TARGET_TYPE (t
));
3235 get_discrete_bounds (TYPE_INDEX_TYPE (t
), &low_bound
, &high_bound
);
3237 return high_bound
== low_bound
&& is_scalar_type_recursive (elt_type
);
3239 /* Are we dealing with a struct with one element? */
3240 else if (TYPE_CODE (t
) == TYPE_CODE_STRUCT
&& TYPE_NFIELDS (t
) == 1)
3241 return is_scalar_type_recursive (TYPE_FIELD_TYPE (t
, 0));
3242 else if (TYPE_CODE (t
) == TYPE_CODE_UNION
)
3244 int i
, n
= TYPE_NFIELDS (t
);
3246 /* If all elements of the union are scalar, then the union is scalar. */
3247 for (i
= 0; i
< n
; i
++)
3248 if (!is_scalar_type_recursive (TYPE_FIELD_TYPE (t
, i
)))
3257 /* Return true is T is a class or a union. False otherwise. */
3260 class_or_union_p (const struct type
*t
)
3262 return (TYPE_CODE (t
) == TYPE_CODE_STRUCT
3263 || TYPE_CODE (t
) == TYPE_CODE_UNION
);
3266 /* A helper function which returns true if types A and B represent the
3267 "same" class type. This is true if the types have the same main
3268 type, or the same name. */
3271 class_types_same_p (const struct type
*a
, const struct type
*b
)
3273 return (TYPE_MAIN_TYPE (a
) == TYPE_MAIN_TYPE (b
)
3274 || (TYPE_NAME (a
) && TYPE_NAME (b
)
3275 && !strcmp (TYPE_NAME (a
), TYPE_NAME (b
))));
3278 /* If BASE is an ancestor of DCLASS return the distance between them.
3279 otherwise return -1;
3283 class B: public A {};
3284 class C: public B {};
3287 distance_to_ancestor (A, A, 0) = 0
3288 distance_to_ancestor (A, B, 0) = 1
3289 distance_to_ancestor (A, C, 0) = 2
3290 distance_to_ancestor (A, D, 0) = 3
3292 If PUBLIC is 1 then only public ancestors are considered,
3293 and the function returns the distance only if BASE is a public ancestor
3297 distance_to_ancestor (A, D, 1) = -1. */
3300 distance_to_ancestor (struct type
*base
, struct type
*dclass
, int is_public
)
3305 base
= check_typedef (base
);
3306 dclass
= check_typedef (dclass
);
3308 if (class_types_same_p (base
, dclass
))
3311 for (i
= 0; i
< TYPE_N_BASECLASSES (dclass
); i
++)
3313 if (is_public
&& ! BASETYPE_VIA_PUBLIC (dclass
, i
))
3316 d
= distance_to_ancestor (base
, TYPE_BASECLASS (dclass
, i
), is_public
);
3324 /* Check whether BASE is an ancestor or base class or DCLASS
3325 Return 1 if so, and 0 if not.
3326 Note: If BASE and DCLASS are of the same type, this function
3327 will return 1. So for some class A, is_ancestor (A, A) will
3331 is_ancestor (struct type
*base
, struct type
*dclass
)
3333 return distance_to_ancestor (base
, dclass
, 0) >= 0;
3336 /* Like is_ancestor, but only returns true when BASE is a public
3337 ancestor of DCLASS. */
3340 is_public_ancestor (struct type
*base
, struct type
*dclass
)
3342 return distance_to_ancestor (base
, dclass
, 1) >= 0;
3345 /* A helper function for is_unique_ancestor. */
3348 is_unique_ancestor_worker (struct type
*base
, struct type
*dclass
,
3350 const gdb_byte
*valaddr
, int embedded_offset
,
3351 CORE_ADDR address
, struct value
*val
)
3355 base
= check_typedef (base
);
3356 dclass
= check_typedef (dclass
);
3358 for (i
= 0; i
< TYPE_N_BASECLASSES (dclass
) && count
< 2; ++i
)
3363 iter
= check_typedef (TYPE_BASECLASS (dclass
, i
));
3365 this_offset
= baseclass_offset (dclass
, i
, valaddr
, embedded_offset
,
3368 if (class_types_same_p (base
, iter
))
3370 /* If this is the first subclass, set *OFFSET and set count
3371 to 1. Otherwise, if this is at the same offset as
3372 previous instances, do nothing. Otherwise, increment
3376 *offset
= this_offset
;
3379 else if (this_offset
== *offset
)
3387 count
+= is_unique_ancestor_worker (base
, iter
, offset
,
3389 embedded_offset
+ this_offset
,
3396 /* Like is_ancestor, but only returns true if BASE is a unique base
3397 class of the type of VAL. */
3400 is_unique_ancestor (struct type
*base
, struct value
*val
)
3404 return is_unique_ancestor_worker (base
, value_type (val
), &offset
,
3405 value_contents_for_printing (val
),
3406 value_embedded_offset (val
),
3407 value_address (val
), val
) == 1;
3411 /* Overload resolution. */
3413 /* Return the sum of the rank of A with the rank of B. */
3416 sum_ranks (struct rank a
, struct rank b
)
3419 c
.rank
= a
.rank
+ b
.rank
;
3420 c
.subrank
= a
.subrank
+ b
.subrank
;
3424 /* Compare rank A and B and return:
3426 1 if a is better than b
3427 -1 if b is better than a. */
3430 compare_ranks (struct rank a
, struct rank b
)
3432 if (a
.rank
== b
.rank
)
3434 if (a
.subrank
== b
.subrank
)
3436 if (a
.subrank
< b
.subrank
)
3438 if (a
.subrank
> b
.subrank
)
3442 if (a
.rank
< b
.rank
)
3445 /* a.rank > b.rank */
3449 /* Functions for overload resolution begin here. */
3451 /* Compare two badness vectors A and B and return the result.
3452 0 => A and B are identical
3453 1 => A and B are incomparable
3454 2 => A is better than B
3455 3 => A is worse than B */
3458 compare_badness (const badness_vector
&a
, const badness_vector
&b
)
3462 short found_pos
= 0; /* any positives in c? */
3463 short found_neg
= 0; /* any negatives in c? */
3465 /* differing sizes => incomparable */
3466 if (a
.size () != b
.size ())
3469 /* Subtract b from a */
3470 for (i
= 0; i
< a
.size (); i
++)
3472 tmp
= compare_ranks (b
[i
], a
[i
]);
3482 return 1; /* incomparable */
3484 return 3; /* A > B */
3490 return 2; /* A < B */
3492 return 0; /* A == B */
3496 /* Rank a function by comparing its parameter types (PARMS), to the
3497 types of an argument list (ARGS). Return the badness vector. This
3498 has ARGS.size() + 1 entries. */
3501 rank_function (gdb::array_view
<type
*> parms
,
3502 gdb::array_view
<value
*> args
)
3504 /* add 1 for the length-match rank. */
3506 bv
.reserve (1 + args
.size ());
3508 /* First compare the lengths of the supplied lists.
3509 If there is a mismatch, set it to a high value. */
3511 /* pai/1997-06-03 FIXME: when we have debug info about default
3512 arguments and ellipsis parameter lists, we should consider those
3513 and rank the length-match more finely. */
3515 bv
.push_back ((args
.size () != parms
.size ())
3516 ? LENGTH_MISMATCH_BADNESS
3517 : EXACT_MATCH_BADNESS
);
3519 /* Now rank all the parameters of the candidate function. */
3520 size_t min_len
= std::min (parms
.size (), args
.size ());
3522 for (size_t i
= 0; i
< min_len
; i
++)
3523 bv
.push_back (rank_one_type (parms
[i
], value_type (args
[i
]),
3526 /* If more arguments than parameters, add dummy entries. */
3527 for (size_t i
= min_len
; i
< args
.size (); i
++)
3528 bv
.push_back (TOO_FEW_PARAMS_BADNESS
);
3533 /* Compare the names of two integer types, assuming that any sign
3534 qualifiers have been checked already. We do it this way because
3535 there may be an "int" in the name of one of the types. */
3538 integer_types_same_name_p (const char *first
, const char *second
)
3540 int first_p
, second_p
;
3542 /* If both are shorts, return 1; if neither is a short, keep
3544 first_p
= (strstr (first
, "short") != NULL
);
3545 second_p
= (strstr (second
, "short") != NULL
);
3546 if (first_p
&& second_p
)
3548 if (first_p
|| second_p
)
3551 /* Likewise for long. */
3552 first_p
= (strstr (first
, "long") != NULL
);
3553 second_p
= (strstr (second
, "long") != NULL
);
3554 if (first_p
&& second_p
)
3556 if (first_p
|| second_p
)
3559 /* Likewise for char. */
3560 first_p
= (strstr (first
, "char") != NULL
);
3561 second_p
= (strstr (second
, "char") != NULL
);
3562 if (first_p
&& second_p
)
3564 if (first_p
|| second_p
)
3567 /* They must both be ints. */
3571 /* Compares type A to type B. Returns true if they represent the same
3572 type, false otherwise. */
3575 types_equal (struct type
*a
, struct type
*b
)
3577 /* Identical type pointers. */
3578 /* However, this still doesn't catch all cases of same type for b
3579 and a. The reason is that builtin types are different from
3580 the same ones constructed from the object. */
3584 /* Resolve typedefs */
3585 if (TYPE_CODE (a
) == TYPE_CODE_TYPEDEF
)
3586 a
= check_typedef (a
);
3587 if (TYPE_CODE (b
) == TYPE_CODE_TYPEDEF
)
3588 b
= check_typedef (b
);
3590 /* If after resolving typedefs a and b are not of the same type
3591 code then they are not equal. */
3592 if (TYPE_CODE (a
) != TYPE_CODE (b
))
3595 /* If a and b are both pointers types or both reference types then
3596 they are equal of the same type iff the objects they refer to are
3597 of the same type. */
3598 if (TYPE_CODE (a
) == TYPE_CODE_PTR
3599 || TYPE_CODE (a
) == TYPE_CODE_REF
)
3600 return types_equal (TYPE_TARGET_TYPE (a
),
3601 TYPE_TARGET_TYPE (b
));
3603 /* Well, damnit, if the names are exactly the same, I'll say they
3604 are exactly the same. This happens when we generate method
3605 stubs. The types won't point to the same address, but they
3606 really are the same. */
3608 if (TYPE_NAME (a
) && TYPE_NAME (b
)
3609 && strcmp (TYPE_NAME (a
), TYPE_NAME (b
)) == 0)
3612 /* Check if identical after resolving typedefs. */
3616 /* Two function types are equal if their argument and return types
3618 if (TYPE_CODE (a
) == TYPE_CODE_FUNC
)
3622 if (TYPE_NFIELDS (a
) != TYPE_NFIELDS (b
))
3625 if (!types_equal (TYPE_TARGET_TYPE (a
), TYPE_TARGET_TYPE (b
)))
3628 for (i
= 0; i
< TYPE_NFIELDS (a
); ++i
)
3629 if (!types_equal (TYPE_FIELD_TYPE (a
, i
), TYPE_FIELD_TYPE (b
, i
)))
3638 /* Deep comparison of types. */
3640 /* An entry in the type-equality bcache. */
3642 struct type_equality_entry
3644 type_equality_entry (struct type
*t1
, struct type
*t2
)
3650 struct type
*type1
, *type2
;
3653 /* A helper function to compare two strings. Returns true if they are
3654 the same, false otherwise. Handles NULLs properly. */
3657 compare_maybe_null_strings (const char *s
, const char *t
)
3659 if (s
== NULL
|| t
== NULL
)
3661 return strcmp (s
, t
) == 0;
3664 /* A helper function for check_types_worklist that checks two types for
3665 "deep" equality. Returns true if the types are considered the
3666 same, false otherwise. */
3669 check_types_equal (struct type
*type1
, struct type
*type2
,
3670 std::vector
<type_equality_entry
> *worklist
)
3672 type1
= check_typedef (type1
);
3673 type2
= check_typedef (type2
);
3678 if (TYPE_CODE (type1
) != TYPE_CODE (type2
)
3679 || TYPE_LENGTH (type1
) != TYPE_LENGTH (type2
)
3680 || TYPE_UNSIGNED (type1
) != TYPE_UNSIGNED (type2
)
3681 || TYPE_NOSIGN (type1
) != TYPE_NOSIGN (type2
)
3682 || TYPE_ENDIANITY_NOT_DEFAULT (type1
) != TYPE_ENDIANITY_NOT_DEFAULT (type2
)
3683 || TYPE_VARARGS (type1
) != TYPE_VARARGS (type2
)
3684 || TYPE_VECTOR (type1
) != TYPE_VECTOR (type2
)
3685 || TYPE_NOTTEXT (type1
) != TYPE_NOTTEXT (type2
)
3686 || TYPE_INSTANCE_FLAGS (type1
) != TYPE_INSTANCE_FLAGS (type2
)
3687 || TYPE_NFIELDS (type1
) != TYPE_NFIELDS (type2
))
3690 if (!compare_maybe_null_strings (TYPE_NAME (type1
), TYPE_NAME (type2
)))
3692 if (!compare_maybe_null_strings (TYPE_NAME (type1
), TYPE_NAME (type2
)))
3695 if (TYPE_CODE (type1
) == TYPE_CODE_RANGE
)
3697 if (*TYPE_RANGE_DATA (type1
) != *TYPE_RANGE_DATA (type2
))
3704 for (i
= 0; i
< TYPE_NFIELDS (type1
); ++i
)
3706 const struct field
*field1
= &TYPE_FIELD (type1
, i
);
3707 const struct field
*field2
= &TYPE_FIELD (type2
, i
);
3709 if (FIELD_ARTIFICIAL (*field1
) != FIELD_ARTIFICIAL (*field2
)
3710 || FIELD_BITSIZE (*field1
) != FIELD_BITSIZE (*field2
)
3711 || FIELD_LOC_KIND (*field1
) != FIELD_LOC_KIND (*field2
))
3713 if (!compare_maybe_null_strings (FIELD_NAME (*field1
),
3714 FIELD_NAME (*field2
)))
3716 switch (FIELD_LOC_KIND (*field1
))
3718 case FIELD_LOC_KIND_BITPOS
:
3719 if (FIELD_BITPOS (*field1
) != FIELD_BITPOS (*field2
))
3722 case FIELD_LOC_KIND_ENUMVAL
:
3723 if (FIELD_ENUMVAL (*field1
) != FIELD_ENUMVAL (*field2
))
3726 case FIELD_LOC_KIND_PHYSADDR
:
3727 if (FIELD_STATIC_PHYSADDR (*field1
)
3728 != FIELD_STATIC_PHYSADDR (*field2
))
3731 case FIELD_LOC_KIND_PHYSNAME
:
3732 if (!compare_maybe_null_strings (FIELD_STATIC_PHYSNAME (*field1
),
3733 FIELD_STATIC_PHYSNAME (*field2
)))
3736 case FIELD_LOC_KIND_DWARF_BLOCK
:
3738 struct dwarf2_locexpr_baton
*block1
, *block2
;
3740 block1
= FIELD_DWARF_BLOCK (*field1
);
3741 block2
= FIELD_DWARF_BLOCK (*field2
);
3742 if (block1
->per_cu
!= block2
->per_cu
3743 || block1
->size
!= block2
->size
3744 || memcmp (block1
->data
, block2
->data
, block1
->size
) != 0)
3749 internal_error (__FILE__
, __LINE__
, _("Unsupported field kind "
3750 "%d by check_types_equal"),
3751 FIELD_LOC_KIND (*field1
));
3754 worklist
->emplace_back (FIELD_TYPE (*field1
), FIELD_TYPE (*field2
));
3758 if (TYPE_TARGET_TYPE (type1
) != NULL
)
3760 if (TYPE_TARGET_TYPE (type2
) == NULL
)
3763 worklist
->emplace_back (TYPE_TARGET_TYPE (type1
),
3764 TYPE_TARGET_TYPE (type2
));
3766 else if (TYPE_TARGET_TYPE (type2
) != NULL
)
3772 /* Check types on a worklist for equality. Returns false if any pair
3773 is not equal, true if they are all considered equal. */
3776 check_types_worklist (std::vector
<type_equality_entry
> *worklist
,
3777 struct bcache
*cache
)
3779 while (!worklist
->empty ())
3783 struct type_equality_entry entry
= std::move (worklist
->back ());
3784 worklist
->pop_back ();
3786 /* If the type pair has already been visited, we know it is
3788 cache
->insert (&entry
, sizeof (entry
), &added
);
3792 if (!check_types_equal (entry
.type1
, entry
.type2
, worklist
))
3799 /* Return true if types TYPE1 and TYPE2 are equal, as determined by a
3800 "deep comparison". Otherwise return false. */
3803 types_deeply_equal (struct type
*type1
, struct type
*type2
)
3805 std::vector
<type_equality_entry
> worklist
;
3807 gdb_assert (type1
!= NULL
&& type2
!= NULL
);
3809 /* Early exit for the simple case. */
3813 struct bcache
cache (nullptr, nullptr);
3814 worklist
.emplace_back (type1
, type2
);
3815 return check_types_worklist (&worklist
, &cache
);
3818 /* Allocated status of type TYPE. Return zero if type TYPE is allocated.
3819 Otherwise return one. */
3822 type_not_allocated (const struct type
*type
)
3824 struct dynamic_prop
*prop
= TYPE_ALLOCATED_PROP (type
);
3826 return (prop
&& TYPE_DYN_PROP_KIND (prop
) == PROP_CONST
3827 && !TYPE_DYN_PROP_ADDR (prop
));
3830 /* Associated status of type TYPE. Return zero if type TYPE is associated.
3831 Otherwise return one. */
3834 type_not_associated (const struct type
*type
)
3836 struct dynamic_prop
*prop
= TYPE_ASSOCIATED_PROP (type
);
3838 return (prop
&& TYPE_DYN_PROP_KIND (prop
) == PROP_CONST
3839 && !TYPE_DYN_PROP_ADDR (prop
));
3842 /* rank_one_type helper for when PARM's type code is TYPE_CODE_PTR. */
3845 rank_one_type_parm_ptr (struct type
*parm
, struct type
*arg
, struct value
*value
)
3847 struct rank rank
= {0,0};
3849 switch (TYPE_CODE (arg
))
3853 /* Allowed pointer conversions are:
3854 (a) pointer to void-pointer conversion. */
3855 if (TYPE_CODE (TYPE_TARGET_TYPE (parm
)) == TYPE_CODE_VOID
)
3856 return VOID_PTR_CONVERSION_BADNESS
;
3858 /* (b) pointer to ancestor-pointer conversion. */
3859 rank
.subrank
= distance_to_ancestor (TYPE_TARGET_TYPE (parm
),
3860 TYPE_TARGET_TYPE (arg
),
3862 if (rank
.subrank
>= 0)
3863 return sum_ranks (BASE_PTR_CONVERSION_BADNESS
, rank
);
3865 return INCOMPATIBLE_TYPE_BADNESS
;
3866 case TYPE_CODE_ARRAY
:
3868 struct type
*t1
= TYPE_TARGET_TYPE (parm
);
3869 struct type
*t2
= TYPE_TARGET_TYPE (arg
);
3871 if (types_equal (t1
, t2
))
3873 /* Make sure they are CV equal. */
3874 if (TYPE_CONST (t1
) != TYPE_CONST (t2
))
3875 rank
.subrank
|= CV_CONVERSION_CONST
;
3876 if (TYPE_VOLATILE (t1
) != TYPE_VOLATILE (t2
))
3877 rank
.subrank
|= CV_CONVERSION_VOLATILE
;
3878 if (rank
.subrank
!= 0)
3879 return sum_ranks (CV_CONVERSION_BADNESS
, rank
);
3880 return EXACT_MATCH_BADNESS
;
3882 return INCOMPATIBLE_TYPE_BADNESS
;
3884 case TYPE_CODE_FUNC
:
3885 return rank_one_type (TYPE_TARGET_TYPE (parm
), arg
, NULL
);
3887 if (value
!= NULL
&& TYPE_CODE (value_type (value
)) == TYPE_CODE_INT
)
3889 if (value_as_long (value
) == 0)
3891 /* Null pointer conversion: allow it to be cast to a pointer.
3892 [4.10.1 of C++ standard draft n3290] */
3893 return NULL_POINTER_CONVERSION_BADNESS
;
3897 /* If type checking is disabled, allow the conversion. */
3898 if (!strict_type_checking
)
3899 return NS_INTEGER_POINTER_CONVERSION_BADNESS
;
3903 case TYPE_CODE_ENUM
:
3904 case TYPE_CODE_FLAGS
:
3905 case TYPE_CODE_CHAR
:
3906 case TYPE_CODE_RANGE
:
3907 case TYPE_CODE_BOOL
:
3909 return INCOMPATIBLE_TYPE_BADNESS
;
3913 /* rank_one_type helper for when PARM's type code is TYPE_CODE_ARRAY. */
3916 rank_one_type_parm_array (struct type
*parm
, struct type
*arg
, struct value
*value
)
3918 switch (TYPE_CODE (arg
))
3921 case TYPE_CODE_ARRAY
:
3922 return rank_one_type (TYPE_TARGET_TYPE (parm
),
3923 TYPE_TARGET_TYPE (arg
), NULL
);
3925 return INCOMPATIBLE_TYPE_BADNESS
;
3929 /* rank_one_type helper for when PARM's type code is TYPE_CODE_FUNC. */
3932 rank_one_type_parm_func (struct type
*parm
, struct type
*arg
, struct value
*value
)
3934 switch (TYPE_CODE (arg
))
3936 case TYPE_CODE_PTR
: /* funcptr -> func */
3937 return rank_one_type (parm
, TYPE_TARGET_TYPE (arg
), NULL
);
3939 return INCOMPATIBLE_TYPE_BADNESS
;
3943 /* rank_one_type helper for when PARM's type code is TYPE_CODE_INT. */
3946 rank_one_type_parm_int (struct type
*parm
, struct type
*arg
, struct value
*value
)
3948 switch (TYPE_CODE (arg
))
3951 if (TYPE_LENGTH (arg
) == TYPE_LENGTH (parm
))
3953 /* Deal with signed, unsigned, and plain chars and
3954 signed and unsigned ints. */
3955 if (TYPE_NOSIGN (parm
))
3957 /* This case only for character types. */
3958 if (TYPE_NOSIGN (arg
))
3959 return EXACT_MATCH_BADNESS
; /* plain char -> plain char */
3960 else /* signed/unsigned char -> plain char */
3961 return INTEGER_CONVERSION_BADNESS
;
3963 else if (TYPE_UNSIGNED (parm
))
3965 if (TYPE_UNSIGNED (arg
))
3967 /* unsigned int -> unsigned int, or
3968 unsigned long -> unsigned long */
3969 if (integer_types_same_name_p (TYPE_NAME (parm
),
3971 return EXACT_MATCH_BADNESS
;
3972 else if (integer_types_same_name_p (TYPE_NAME (arg
),
3974 && integer_types_same_name_p (TYPE_NAME (parm
),
3976 /* unsigned int -> unsigned long */
3977 return INTEGER_PROMOTION_BADNESS
;
3979 /* unsigned long -> unsigned int */
3980 return INTEGER_CONVERSION_BADNESS
;
3984 if (integer_types_same_name_p (TYPE_NAME (arg
),
3986 && integer_types_same_name_p (TYPE_NAME (parm
),
3988 /* signed long -> unsigned int */
3989 return INTEGER_CONVERSION_BADNESS
;
3991 /* signed int/long -> unsigned int/long */
3992 return INTEGER_CONVERSION_BADNESS
;
3995 else if (!TYPE_NOSIGN (arg
) && !TYPE_UNSIGNED (arg
))
3997 if (integer_types_same_name_p (TYPE_NAME (parm
),
3999 return EXACT_MATCH_BADNESS
;
4000 else if (integer_types_same_name_p (TYPE_NAME (arg
),
4002 && integer_types_same_name_p (TYPE_NAME (parm
),
4004 return INTEGER_PROMOTION_BADNESS
;
4006 return INTEGER_CONVERSION_BADNESS
;
4009 return INTEGER_CONVERSION_BADNESS
;
4011 else if (TYPE_LENGTH (arg
) < TYPE_LENGTH (parm
))
4012 return INTEGER_PROMOTION_BADNESS
;
4014 return INTEGER_CONVERSION_BADNESS
;
4015 case TYPE_CODE_ENUM
:
4016 case TYPE_CODE_FLAGS
:
4017 case TYPE_CODE_CHAR
:
4018 case TYPE_CODE_RANGE
:
4019 case TYPE_CODE_BOOL
:
4020 if (TYPE_DECLARED_CLASS (arg
))
4021 return INCOMPATIBLE_TYPE_BADNESS
;
4022 return INTEGER_PROMOTION_BADNESS
;
4024 return INT_FLOAT_CONVERSION_BADNESS
;
4026 return NS_POINTER_CONVERSION_BADNESS
;
4028 return INCOMPATIBLE_TYPE_BADNESS
;
4032 /* rank_one_type helper for when PARM's type code is TYPE_CODE_ENUM. */
4035 rank_one_type_parm_enum (struct type
*parm
, struct type
*arg
, struct value
*value
)
4037 switch (TYPE_CODE (arg
))
4040 case TYPE_CODE_CHAR
:
4041 case TYPE_CODE_RANGE
:
4042 case TYPE_CODE_BOOL
:
4043 case TYPE_CODE_ENUM
:
4044 if (TYPE_DECLARED_CLASS (parm
) || TYPE_DECLARED_CLASS (arg
))
4045 return INCOMPATIBLE_TYPE_BADNESS
;
4046 return INTEGER_CONVERSION_BADNESS
;
4048 return INT_FLOAT_CONVERSION_BADNESS
;
4050 return INCOMPATIBLE_TYPE_BADNESS
;
4054 /* rank_one_type helper for when PARM's type code is TYPE_CODE_CHAR. */
4057 rank_one_type_parm_char (struct type
*parm
, struct type
*arg
, struct value
*value
)
4059 switch (TYPE_CODE (arg
))
4061 case TYPE_CODE_RANGE
:
4062 case TYPE_CODE_BOOL
:
4063 case TYPE_CODE_ENUM
:
4064 if (TYPE_DECLARED_CLASS (arg
))
4065 return INCOMPATIBLE_TYPE_BADNESS
;
4066 return INTEGER_CONVERSION_BADNESS
;
4068 return INT_FLOAT_CONVERSION_BADNESS
;
4070 if (TYPE_LENGTH (arg
) > TYPE_LENGTH (parm
))
4071 return INTEGER_CONVERSION_BADNESS
;
4072 else if (TYPE_LENGTH (arg
) < TYPE_LENGTH (parm
))
4073 return INTEGER_PROMOTION_BADNESS
;
4075 case TYPE_CODE_CHAR
:
4076 /* Deal with signed, unsigned, and plain chars for C++ and
4077 with int cases falling through from previous case. */
4078 if (TYPE_NOSIGN (parm
))
4080 if (TYPE_NOSIGN (arg
))
4081 return EXACT_MATCH_BADNESS
;
4083 return INTEGER_CONVERSION_BADNESS
;
4085 else if (TYPE_UNSIGNED (parm
))
4087 if (TYPE_UNSIGNED (arg
))
4088 return EXACT_MATCH_BADNESS
;
4090 return INTEGER_PROMOTION_BADNESS
;
4092 else if (!TYPE_NOSIGN (arg
) && !TYPE_UNSIGNED (arg
))
4093 return EXACT_MATCH_BADNESS
;
4095 return INTEGER_CONVERSION_BADNESS
;
4097 return INCOMPATIBLE_TYPE_BADNESS
;
4101 /* rank_one_type helper for when PARM's type code is TYPE_CODE_RANGE. */
4104 rank_one_type_parm_range (struct type
*parm
, struct type
*arg
, struct value
*value
)
4106 switch (TYPE_CODE (arg
))
4109 case TYPE_CODE_CHAR
:
4110 case TYPE_CODE_RANGE
:
4111 case TYPE_CODE_BOOL
:
4112 case TYPE_CODE_ENUM
:
4113 return INTEGER_CONVERSION_BADNESS
;
4115 return INT_FLOAT_CONVERSION_BADNESS
;
4117 return INCOMPATIBLE_TYPE_BADNESS
;
4121 /* rank_one_type helper for when PARM's type code is TYPE_CODE_BOOL. */
4124 rank_one_type_parm_bool (struct type
*parm
, struct type
*arg
, struct value
*value
)
4126 switch (TYPE_CODE (arg
))
4128 /* n3290 draft, section 4.12.1 (conv.bool):
4130 "A prvalue of arithmetic, unscoped enumeration, pointer, or
4131 pointer to member type can be converted to a prvalue of type
4132 bool. A zero value, null pointer value, or null member pointer
4133 value is converted to false; any other value is converted to
4134 true. A prvalue of type std::nullptr_t can be converted to a
4135 prvalue of type bool; the resulting value is false." */
4137 case TYPE_CODE_CHAR
:
4138 case TYPE_CODE_ENUM
:
4140 case TYPE_CODE_MEMBERPTR
:
4142 return BOOL_CONVERSION_BADNESS
;
4143 case TYPE_CODE_RANGE
:
4144 return INCOMPATIBLE_TYPE_BADNESS
;
4145 case TYPE_CODE_BOOL
:
4146 return EXACT_MATCH_BADNESS
;
4148 return INCOMPATIBLE_TYPE_BADNESS
;
4152 /* rank_one_type helper for when PARM's type code is TYPE_CODE_FLOAT. */
4155 rank_one_type_parm_float (struct type
*parm
, struct type
*arg
, struct value
*value
)
4157 switch (TYPE_CODE (arg
))
4160 if (TYPE_LENGTH (arg
) < TYPE_LENGTH (parm
))
4161 return FLOAT_PROMOTION_BADNESS
;
4162 else if (TYPE_LENGTH (arg
) == TYPE_LENGTH (parm
))
4163 return EXACT_MATCH_BADNESS
;
4165 return FLOAT_CONVERSION_BADNESS
;
4167 case TYPE_CODE_BOOL
:
4168 case TYPE_CODE_ENUM
:
4169 case TYPE_CODE_RANGE
:
4170 case TYPE_CODE_CHAR
:
4171 return INT_FLOAT_CONVERSION_BADNESS
;
4173 return INCOMPATIBLE_TYPE_BADNESS
;
4177 /* rank_one_type helper for when PARM's type code is TYPE_CODE_COMPLEX. */
4180 rank_one_type_parm_complex (struct type
*parm
, struct type
*arg
, struct value
*value
)
4182 switch (TYPE_CODE (arg
))
4183 { /* Strictly not needed for C++, but... */
4185 return FLOAT_PROMOTION_BADNESS
;
4186 case TYPE_CODE_COMPLEX
:
4187 return EXACT_MATCH_BADNESS
;
4189 return INCOMPATIBLE_TYPE_BADNESS
;
4193 /* rank_one_type helper for when PARM's type code is TYPE_CODE_STRUCT. */
4196 rank_one_type_parm_struct (struct type
*parm
, struct type
*arg
, struct value
*value
)
4198 struct rank rank
= {0, 0};
4200 switch (TYPE_CODE (arg
))
4202 case TYPE_CODE_STRUCT
:
4203 /* Check for derivation */
4204 rank
.subrank
= distance_to_ancestor (parm
, arg
, 0);
4205 if (rank
.subrank
>= 0)
4206 return sum_ranks (BASE_CONVERSION_BADNESS
, rank
);
4209 return INCOMPATIBLE_TYPE_BADNESS
;
4213 /* rank_one_type helper for when PARM's type code is TYPE_CODE_SET. */
4216 rank_one_type_parm_set (struct type
*parm
, struct type
*arg
, struct value
*value
)
4218 switch (TYPE_CODE (arg
))
4222 return rank_one_type (TYPE_FIELD_TYPE (parm
, 0),
4223 TYPE_FIELD_TYPE (arg
, 0), NULL
);
4225 return INCOMPATIBLE_TYPE_BADNESS
;
4229 /* Compare one type (PARM) for compatibility with another (ARG).
4230 * PARM is intended to be the parameter type of a function; and
4231 * ARG is the supplied argument's type. This function tests if
4232 * the latter can be converted to the former.
4233 * VALUE is the argument's value or NULL if none (or called recursively)
4235 * Return 0 if they are identical types;
4236 * Otherwise, return an integer which corresponds to how compatible
4237 * PARM is to ARG. The higher the return value, the worse the match.
4238 * Generally the "bad" conversions are all uniformly assigned a 100. */
4241 rank_one_type (struct type
*parm
, struct type
*arg
, struct value
*value
)
4243 struct rank rank
= {0,0};
4245 /* Resolve typedefs */
4246 if (TYPE_CODE (parm
) == TYPE_CODE_TYPEDEF
)
4247 parm
= check_typedef (parm
);
4248 if (TYPE_CODE (arg
) == TYPE_CODE_TYPEDEF
)
4249 arg
= check_typedef (arg
);
4251 if (TYPE_IS_REFERENCE (parm
) && value
!= NULL
)
4253 if (VALUE_LVAL (value
) == not_lval
)
4255 /* Rvalues should preferably bind to rvalue references or const
4256 lvalue references. */
4257 if (TYPE_CODE (parm
) == TYPE_CODE_RVALUE_REF
)
4258 rank
.subrank
= REFERENCE_CONVERSION_RVALUE
;
4259 else if (TYPE_CONST (TYPE_TARGET_TYPE (parm
)))
4260 rank
.subrank
= REFERENCE_CONVERSION_CONST_LVALUE
;
4262 return INCOMPATIBLE_TYPE_BADNESS
;
4263 return sum_ranks (rank
, REFERENCE_CONVERSION_BADNESS
);
4267 /* Lvalues should prefer lvalue overloads. */
4268 if (TYPE_CODE (parm
) == TYPE_CODE_RVALUE_REF
)
4270 rank
.subrank
= REFERENCE_CONVERSION_RVALUE
;
4271 return sum_ranks (rank
, REFERENCE_CONVERSION_BADNESS
);
4276 if (types_equal (parm
, arg
))
4278 struct type
*t1
= parm
;
4279 struct type
*t2
= arg
;
4281 /* For pointers and references, compare target type. */
4282 if (TYPE_CODE (parm
) == TYPE_CODE_PTR
|| TYPE_IS_REFERENCE (parm
))
4284 t1
= TYPE_TARGET_TYPE (parm
);
4285 t2
= TYPE_TARGET_TYPE (arg
);
4288 /* Make sure they are CV equal, too. */
4289 if (TYPE_CONST (t1
) != TYPE_CONST (t2
))
4290 rank
.subrank
|= CV_CONVERSION_CONST
;
4291 if (TYPE_VOLATILE (t1
) != TYPE_VOLATILE (t2
))
4292 rank
.subrank
|= CV_CONVERSION_VOLATILE
;
4293 if (rank
.subrank
!= 0)
4294 return sum_ranks (CV_CONVERSION_BADNESS
, rank
);
4295 return EXACT_MATCH_BADNESS
;
4298 /* See through references, since we can almost make non-references
4301 if (TYPE_IS_REFERENCE (arg
))
4302 return (sum_ranks (rank_one_type (parm
, TYPE_TARGET_TYPE (arg
), NULL
),
4303 REFERENCE_CONVERSION_BADNESS
));
4304 if (TYPE_IS_REFERENCE (parm
))
4305 return (sum_ranks (rank_one_type (TYPE_TARGET_TYPE (parm
), arg
, NULL
),
4306 REFERENCE_CONVERSION_BADNESS
));
4308 /* Debugging only. */
4309 fprintf_filtered (gdb_stderr
,
4310 "------ Arg is %s [%d], parm is %s [%d]\n",
4311 TYPE_NAME (arg
), TYPE_CODE (arg
),
4312 TYPE_NAME (parm
), TYPE_CODE (parm
));
4314 /* x -> y means arg of type x being supplied for parameter of type y. */
4316 switch (TYPE_CODE (parm
))
4319 return rank_one_type_parm_ptr (parm
, arg
, value
);
4320 case TYPE_CODE_ARRAY
:
4321 return rank_one_type_parm_array (parm
, arg
, value
);
4322 case TYPE_CODE_FUNC
:
4323 return rank_one_type_parm_func (parm
, arg
, value
);
4325 return rank_one_type_parm_int (parm
, arg
, value
);
4326 case TYPE_CODE_ENUM
:
4327 return rank_one_type_parm_enum (parm
, arg
, value
);
4328 case TYPE_CODE_CHAR
:
4329 return rank_one_type_parm_char (parm
, arg
, value
);
4330 case TYPE_CODE_RANGE
:
4331 return rank_one_type_parm_range (parm
, arg
, value
);
4332 case TYPE_CODE_BOOL
:
4333 return rank_one_type_parm_bool (parm
, arg
, value
);
4335 return rank_one_type_parm_float (parm
, arg
, value
);
4336 case TYPE_CODE_COMPLEX
:
4337 return rank_one_type_parm_complex (parm
, arg
, value
);
4338 case TYPE_CODE_STRUCT
:
4339 return rank_one_type_parm_struct (parm
, arg
, value
);
4341 return rank_one_type_parm_set (parm
, arg
, value
);
4343 return INCOMPATIBLE_TYPE_BADNESS
;
4344 } /* switch (TYPE_CODE (arg)) */
4347 /* End of functions for overload resolution. */
4349 /* Routines to pretty-print types. */
4352 print_bit_vector (B_TYPE
*bits
, int nbits
)
4356 for (bitno
= 0; bitno
< nbits
; bitno
++)
4358 if ((bitno
% 8) == 0)
4360 puts_filtered (" ");
4362 if (B_TST (bits
, bitno
))
4363 printf_filtered (("1"));
4365 printf_filtered (("0"));
4369 /* Note the first arg should be the "this" pointer, we may not want to
4370 include it since we may get into a infinitely recursive
4374 print_args (struct field
*args
, int nargs
, int spaces
)
4380 for (i
= 0; i
< nargs
; i
++)
4382 printfi_filtered (spaces
, "[%d] name '%s'\n", i
,
4383 args
[i
].name
!= NULL
? args
[i
].name
: "<NULL>");
4384 recursive_dump_type (args
[i
].type
, spaces
+ 2);
4390 field_is_static (struct field
*f
)
4392 /* "static" fields are the fields whose location is not relative
4393 to the address of the enclosing struct. It would be nice to
4394 have a dedicated flag that would be set for static fields when
4395 the type is being created. But in practice, checking the field
4396 loc_kind should give us an accurate answer. */
4397 return (FIELD_LOC_KIND (*f
) == FIELD_LOC_KIND_PHYSNAME
4398 || FIELD_LOC_KIND (*f
) == FIELD_LOC_KIND_PHYSADDR
);
4402 dump_fn_fieldlists (struct type
*type
, int spaces
)
4408 printfi_filtered (spaces
, "fn_fieldlists ");
4409 gdb_print_host_address (TYPE_FN_FIELDLISTS (type
), gdb_stdout
);
4410 printf_filtered ("\n");
4411 for (method_idx
= 0; method_idx
< TYPE_NFN_FIELDS (type
); method_idx
++)
4413 f
= TYPE_FN_FIELDLIST1 (type
, method_idx
);
4414 printfi_filtered (spaces
+ 2, "[%d] name '%s' (",
4416 TYPE_FN_FIELDLIST_NAME (type
, method_idx
));
4417 gdb_print_host_address (TYPE_FN_FIELDLIST_NAME (type
, method_idx
),
4419 printf_filtered (_(") length %d\n"),
4420 TYPE_FN_FIELDLIST_LENGTH (type
, method_idx
));
4421 for (overload_idx
= 0;
4422 overload_idx
< TYPE_FN_FIELDLIST_LENGTH (type
, method_idx
);
4425 printfi_filtered (spaces
+ 4, "[%d] physname '%s' (",
4427 TYPE_FN_FIELD_PHYSNAME (f
, overload_idx
));
4428 gdb_print_host_address (TYPE_FN_FIELD_PHYSNAME (f
, overload_idx
),
4430 printf_filtered (")\n");
4431 printfi_filtered (spaces
+ 8, "type ");
4432 gdb_print_host_address (TYPE_FN_FIELD_TYPE (f
, overload_idx
),
4434 printf_filtered ("\n");
4436 recursive_dump_type (TYPE_FN_FIELD_TYPE (f
, overload_idx
),
4439 printfi_filtered (spaces
+ 8, "args ");
4440 gdb_print_host_address (TYPE_FN_FIELD_ARGS (f
, overload_idx
),
4442 printf_filtered ("\n");
4443 print_args (TYPE_FN_FIELD_ARGS (f
, overload_idx
),
4444 TYPE_NFIELDS (TYPE_FN_FIELD_TYPE (f
, overload_idx
)),
4446 printfi_filtered (spaces
+ 8, "fcontext ");
4447 gdb_print_host_address (TYPE_FN_FIELD_FCONTEXT (f
, overload_idx
),
4449 printf_filtered ("\n");
4451 printfi_filtered (spaces
+ 8, "is_const %d\n",
4452 TYPE_FN_FIELD_CONST (f
, overload_idx
));
4453 printfi_filtered (spaces
+ 8, "is_volatile %d\n",
4454 TYPE_FN_FIELD_VOLATILE (f
, overload_idx
));
4455 printfi_filtered (spaces
+ 8, "is_private %d\n",
4456 TYPE_FN_FIELD_PRIVATE (f
, overload_idx
));
4457 printfi_filtered (spaces
+ 8, "is_protected %d\n",
4458 TYPE_FN_FIELD_PROTECTED (f
, overload_idx
));
4459 printfi_filtered (spaces
+ 8, "is_stub %d\n",
4460 TYPE_FN_FIELD_STUB (f
, overload_idx
));
4461 printfi_filtered (spaces
+ 8, "voffset %u\n",
4462 TYPE_FN_FIELD_VOFFSET (f
, overload_idx
));
4468 print_cplus_stuff (struct type
*type
, int spaces
)
4470 printfi_filtered (spaces
, "vptr_fieldno %d\n", TYPE_VPTR_FIELDNO (type
));
4471 printfi_filtered (spaces
, "vptr_basetype ");
4472 gdb_print_host_address (TYPE_VPTR_BASETYPE (type
), gdb_stdout
);
4473 puts_filtered ("\n");
4474 if (TYPE_VPTR_BASETYPE (type
) != NULL
)
4475 recursive_dump_type (TYPE_VPTR_BASETYPE (type
), spaces
+ 2);
4477 printfi_filtered (spaces
, "n_baseclasses %d\n",
4478 TYPE_N_BASECLASSES (type
));
4479 printfi_filtered (spaces
, "nfn_fields %d\n",
4480 TYPE_NFN_FIELDS (type
));
4481 if (TYPE_N_BASECLASSES (type
) > 0)
4483 printfi_filtered (spaces
, "virtual_field_bits (%d bits at *",
4484 TYPE_N_BASECLASSES (type
));
4485 gdb_print_host_address (TYPE_FIELD_VIRTUAL_BITS (type
),
4487 printf_filtered (")");
4489 print_bit_vector (TYPE_FIELD_VIRTUAL_BITS (type
),
4490 TYPE_N_BASECLASSES (type
));
4491 puts_filtered ("\n");
4493 if (TYPE_NFIELDS (type
) > 0)
4495 if (TYPE_FIELD_PRIVATE_BITS (type
) != NULL
)
4497 printfi_filtered (spaces
,
4498 "private_field_bits (%d bits at *",
4499 TYPE_NFIELDS (type
));
4500 gdb_print_host_address (TYPE_FIELD_PRIVATE_BITS (type
),
4502 printf_filtered (")");
4503 print_bit_vector (TYPE_FIELD_PRIVATE_BITS (type
),
4504 TYPE_NFIELDS (type
));
4505 puts_filtered ("\n");
4507 if (TYPE_FIELD_PROTECTED_BITS (type
) != NULL
)
4509 printfi_filtered (spaces
,
4510 "protected_field_bits (%d bits at *",
4511 TYPE_NFIELDS (type
));
4512 gdb_print_host_address (TYPE_FIELD_PROTECTED_BITS (type
),
4514 printf_filtered (")");
4515 print_bit_vector (TYPE_FIELD_PROTECTED_BITS (type
),
4516 TYPE_NFIELDS (type
));
4517 puts_filtered ("\n");
4520 if (TYPE_NFN_FIELDS (type
) > 0)
4522 dump_fn_fieldlists (type
, spaces
);
4526 /* Print the contents of the TYPE's type_specific union, assuming that
4527 its type-specific kind is TYPE_SPECIFIC_GNAT_STUFF. */
4530 print_gnat_stuff (struct type
*type
, int spaces
)
4532 struct type
*descriptive_type
= TYPE_DESCRIPTIVE_TYPE (type
);
4534 if (descriptive_type
== NULL
)
4535 printfi_filtered (spaces
+ 2, "no descriptive type\n");
4538 printfi_filtered (spaces
+ 2, "descriptive type\n");
4539 recursive_dump_type (descriptive_type
, spaces
+ 4);
4543 static struct obstack dont_print_type_obstack
;
4546 recursive_dump_type (struct type
*type
, int spaces
)
4551 obstack_begin (&dont_print_type_obstack
, 0);
4553 if (TYPE_NFIELDS (type
) > 0
4554 || (HAVE_CPLUS_STRUCT (type
) && TYPE_NFN_FIELDS (type
) > 0))
4556 struct type
**first_dont_print
4557 = (struct type
**) obstack_base (&dont_print_type_obstack
);
4559 int i
= (struct type
**)
4560 obstack_next_free (&dont_print_type_obstack
) - first_dont_print
;
4564 if (type
== first_dont_print
[i
])
4566 printfi_filtered (spaces
, "type node ");
4567 gdb_print_host_address (type
, gdb_stdout
);
4568 printf_filtered (_(" <same as already seen type>\n"));
4573 obstack_ptr_grow (&dont_print_type_obstack
, type
);
4576 printfi_filtered (spaces
, "type node ");
4577 gdb_print_host_address (type
, gdb_stdout
);
4578 printf_filtered ("\n");
4579 printfi_filtered (spaces
, "name '%s' (",
4580 TYPE_NAME (type
) ? TYPE_NAME (type
) : "<NULL>");
4581 gdb_print_host_address (TYPE_NAME (type
), gdb_stdout
);
4582 printf_filtered (")\n");
4583 printfi_filtered (spaces
, "code 0x%x ", TYPE_CODE (type
));
4584 switch (TYPE_CODE (type
))
4586 case TYPE_CODE_UNDEF
:
4587 printf_filtered ("(TYPE_CODE_UNDEF)");
4590 printf_filtered ("(TYPE_CODE_PTR)");
4592 case TYPE_CODE_ARRAY
:
4593 printf_filtered ("(TYPE_CODE_ARRAY)");
4595 case TYPE_CODE_STRUCT
:
4596 printf_filtered ("(TYPE_CODE_STRUCT)");
4598 case TYPE_CODE_UNION
:
4599 printf_filtered ("(TYPE_CODE_UNION)");
4601 case TYPE_CODE_ENUM
:
4602 printf_filtered ("(TYPE_CODE_ENUM)");
4604 case TYPE_CODE_FLAGS
:
4605 printf_filtered ("(TYPE_CODE_FLAGS)");
4607 case TYPE_CODE_FUNC
:
4608 printf_filtered ("(TYPE_CODE_FUNC)");
4611 printf_filtered ("(TYPE_CODE_INT)");
4614 printf_filtered ("(TYPE_CODE_FLT)");
4616 case TYPE_CODE_VOID
:
4617 printf_filtered ("(TYPE_CODE_VOID)");
4620 printf_filtered ("(TYPE_CODE_SET)");
4622 case TYPE_CODE_RANGE
:
4623 printf_filtered ("(TYPE_CODE_RANGE)");
4625 case TYPE_CODE_STRING
:
4626 printf_filtered ("(TYPE_CODE_STRING)");
4628 case TYPE_CODE_ERROR
:
4629 printf_filtered ("(TYPE_CODE_ERROR)");
4631 case TYPE_CODE_MEMBERPTR
:
4632 printf_filtered ("(TYPE_CODE_MEMBERPTR)");
4634 case TYPE_CODE_METHODPTR
:
4635 printf_filtered ("(TYPE_CODE_METHODPTR)");
4637 case TYPE_CODE_METHOD
:
4638 printf_filtered ("(TYPE_CODE_METHOD)");
4641 printf_filtered ("(TYPE_CODE_REF)");
4643 case TYPE_CODE_CHAR
:
4644 printf_filtered ("(TYPE_CODE_CHAR)");
4646 case TYPE_CODE_BOOL
:
4647 printf_filtered ("(TYPE_CODE_BOOL)");
4649 case TYPE_CODE_COMPLEX
:
4650 printf_filtered ("(TYPE_CODE_COMPLEX)");
4652 case TYPE_CODE_TYPEDEF
:
4653 printf_filtered ("(TYPE_CODE_TYPEDEF)");
4655 case TYPE_CODE_NAMESPACE
:
4656 printf_filtered ("(TYPE_CODE_NAMESPACE)");
4659 printf_filtered ("(UNKNOWN TYPE CODE)");
4662 puts_filtered ("\n");
4663 printfi_filtered (spaces
, "length %s\n", pulongest (TYPE_LENGTH (type
)));
4664 if (TYPE_OBJFILE_OWNED (type
))
4666 printfi_filtered (spaces
, "objfile ");
4667 gdb_print_host_address (TYPE_OWNER (type
).objfile
, gdb_stdout
);
4671 printfi_filtered (spaces
, "gdbarch ");
4672 gdb_print_host_address (TYPE_OWNER (type
).gdbarch
, gdb_stdout
);
4674 printf_filtered ("\n");
4675 printfi_filtered (spaces
, "target_type ");
4676 gdb_print_host_address (TYPE_TARGET_TYPE (type
), gdb_stdout
);
4677 printf_filtered ("\n");
4678 if (TYPE_TARGET_TYPE (type
) != NULL
)
4680 recursive_dump_type (TYPE_TARGET_TYPE (type
), spaces
+ 2);
4682 printfi_filtered (spaces
, "pointer_type ");
4683 gdb_print_host_address (TYPE_POINTER_TYPE (type
), gdb_stdout
);
4684 printf_filtered ("\n");
4685 printfi_filtered (spaces
, "reference_type ");
4686 gdb_print_host_address (TYPE_REFERENCE_TYPE (type
), gdb_stdout
);
4687 printf_filtered ("\n");
4688 printfi_filtered (spaces
, "type_chain ");
4689 gdb_print_host_address (TYPE_CHAIN (type
), gdb_stdout
);
4690 printf_filtered ("\n");
4691 printfi_filtered (spaces
, "instance_flags 0x%x",
4692 TYPE_INSTANCE_FLAGS (type
));
4693 if (TYPE_CONST (type
))
4695 puts_filtered (" TYPE_CONST");
4697 if (TYPE_VOLATILE (type
))
4699 puts_filtered (" TYPE_VOLATILE");
4701 if (TYPE_CODE_SPACE (type
))
4703 puts_filtered (" TYPE_CODE_SPACE");
4705 if (TYPE_DATA_SPACE (type
))
4707 puts_filtered (" TYPE_DATA_SPACE");
4709 if (TYPE_ADDRESS_CLASS_1 (type
))
4711 puts_filtered (" TYPE_ADDRESS_CLASS_1");
4713 if (TYPE_ADDRESS_CLASS_2 (type
))
4715 puts_filtered (" TYPE_ADDRESS_CLASS_2");
4717 if (TYPE_RESTRICT (type
))
4719 puts_filtered (" TYPE_RESTRICT");
4721 if (TYPE_ATOMIC (type
))
4723 puts_filtered (" TYPE_ATOMIC");
4725 puts_filtered ("\n");
4727 printfi_filtered (spaces
, "flags");
4728 if (TYPE_UNSIGNED (type
))
4730 puts_filtered (" TYPE_UNSIGNED");
4732 if (TYPE_NOSIGN (type
))
4734 puts_filtered (" TYPE_NOSIGN");
4736 if (TYPE_ENDIANITY_NOT_DEFAULT (type
))
4738 puts_filtered (" TYPE_ENDIANITY_NOT_DEFAULT");
4740 if (TYPE_STUB (type
))
4742 puts_filtered (" TYPE_STUB");
4744 if (TYPE_TARGET_STUB (type
))
4746 puts_filtered (" TYPE_TARGET_STUB");
4748 if (TYPE_PROTOTYPED (type
))
4750 puts_filtered (" TYPE_PROTOTYPED");
4752 if (TYPE_INCOMPLETE (type
))
4754 puts_filtered (" TYPE_INCOMPLETE");
4756 if (TYPE_VARARGS (type
))
4758 puts_filtered (" TYPE_VARARGS");
4760 /* This is used for things like AltiVec registers on ppc. Gcc emits
4761 an attribute for the array type, which tells whether or not we
4762 have a vector, instead of a regular array. */
4763 if (TYPE_VECTOR (type
))
4765 puts_filtered (" TYPE_VECTOR");
4767 if (TYPE_FIXED_INSTANCE (type
))
4769 puts_filtered (" TYPE_FIXED_INSTANCE");
4771 if (TYPE_STUB_SUPPORTED (type
))
4773 puts_filtered (" TYPE_STUB_SUPPORTED");
4775 if (TYPE_NOTTEXT (type
))
4777 puts_filtered (" TYPE_NOTTEXT");
4779 puts_filtered ("\n");
4780 printfi_filtered (spaces
, "nfields %d ", TYPE_NFIELDS (type
));
4781 gdb_print_host_address (TYPE_FIELDS (type
), gdb_stdout
);
4782 puts_filtered ("\n");
4783 for (idx
= 0; idx
< TYPE_NFIELDS (type
); idx
++)
4785 if (TYPE_CODE (type
) == TYPE_CODE_ENUM
)
4786 printfi_filtered (spaces
+ 2,
4787 "[%d] enumval %s type ",
4788 idx
, plongest (TYPE_FIELD_ENUMVAL (type
, idx
)));
4790 printfi_filtered (spaces
+ 2,
4791 "[%d] bitpos %s bitsize %d type ",
4792 idx
, plongest (TYPE_FIELD_BITPOS (type
, idx
)),
4793 TYPE_FIELD_BITSIZE (type
, idx
));
4794 gdb_print_host_address (TYPE_FIELD_TYPE (type
, idx
), gdb_stdout
);
4795 printf_filtered (" name '%s' (",
4796 TYPE_FIELD_NAME (type
, idx
) != NULL
4797 ? TYPE_FIELD_NAME (type
, idx
)
4799 gdb_print_host_address (TYPE_FIELD_NAME (type
, idx
), gdb_stdout
);
4800 printf_filtered (")\n");
4801 if (TYPE_FIELD_TYPE (type
, idx
) != NULL
)
4803 recursive_dump_type (TYPE_FIELD_TYPE (type
, idx
), spaces
+ 4);
4806 if (TYPE_CODE (type
) == TYPE_CODE_RANGE
)
4808 printfi_filtered (spaces
, "low %s%s high %s%s\n",
4809 plongest (TYPE_LOW_BOUND (type
)),
4810 TYPE_LOW_BOUND_UNDEFINED (type
) ? " (undefined)" : "",
4811 plongest (TYPE_HIGH_BOUND (type
)),
4812 TYPE_HIGH_BOUND_UNDEFINED (type
)
4813 ? " (undefined)" : "");
4816 switch (TYPE_SPECIFIC_FIELD (type
))
4818 case TYPE_SPECIFIC_CPLUS_STUFF
:
4819 printfi_filtered (spaces
, "cplus_stuff ");
4820 gdb_print_host_address (TYPE_CPLUS_SPECIFIC (type
),
4822 puts_filtered ("\n");
4823 print_cplus_stuff (type
, spaces
);
4826 case TYPE_SPECIFIC_GNAT_STUFF
:
4827 printfi_filtered (spaces
, "gnat_stuff ");
4828 gdb_print_host_address (TYPE_GNAT_SPECIFIC (type
), gdb_stdout
);
4829 puts_filtered ("\n");
4830 print_gnat_stuff (type
, spaces
);
4833 case TYPE_SPECIFIC_FLOATFORMAT
:
4834 printfi_filtered (spaces
, "floatformat ");
4835 if (TYPE_FLOATFORMAT (type
) == NULL
4836 || TYPE_FLOATFORMAT (type
)->name
== NULL
)
4837 puts_filtered ("(null)");
4839 puts_filtered (TYPE_FLOATFORMAT (type
)->name
);
4840 puts_filtered ("\n");
4843 case TYPE_SPECIFIC_FUNC
:
4844 printfi_filtered (spaces
, "calling_convention %d\n",
4845 TYPE_CALLING_CONVENTION (type
));
4846 /* tail_call_list is not printed. */
4849 case TYPE_SPECIFIC_SELF_TYPE
:
4850 printfi_filtered (spaces
, "self_type ");
4851 gdb_print_host_address (TYPE_SELF_TYPE (type
), gdb_stdout
);
4852 puts_filtered ("\n");
4857 obstack_free (&dont_print_type_obstack
, NULL
);
4860 /* Trivial helpers for the libiberty hash table, for mapping one
4863 struct type_pair
: public allocate_on_obstack
4865 type_pair (struct type
*old_
, struct type
*newobj_
)
4866 : old (old_
), newobj (newobj_
)
4869 struct type
* const old
, * const newobj
;
4873 type_pair_hash (const void *item
)
4875 const struct type_pair
*pair
= (const struct type_pair
*) item
;
4877 return htab_hash_pointer (pair
->old
);
4881 type_pair_eq (const void *item_lhs
, const void *item_rhs
)
4883 const struct type_pair
*lhs
= (const struct type_pair
*) item_lhs
;
4884 const struct type_pair
*rhs
= (const struct type_pair
*) item_rhs
;
4886 return lhs
->old
== rhs
->old
;
4889 /* Allocate the hash table used by copy_type_recursive to walk
4890 types without duplicates. We use OBJFILE's obstack, because
4891 OBJFILE is about to be deleted. */
4894 create_copied_types_hash (struct objfile
*objfile
)
4896 return htab_create_alloc_ex (1, type_pair_hash
, type_pair_eq
,
4897 NULL
, &objfile
->objfile_obstack
,
4898 hashtab_obstack_allocate
,
4899 dummy_obstack_deallocate
);
4902 /* Recursively copy (deep copy) a dynamic attribute list of a type. */
4904 static struct dynamic_prop_list
*
4905 copy_dynamic_prop_list (struct obstack
*objfile_obstack
,
4906 struct dynamic_prop_list
*list
)
4908 struct dynamic_prop_list
*copy
= list
;
4909 struct dynamic_prop_list
**node_ptr
= ©
;
4911 while (*node_ptr
!= NULL
)
4913 struct dynamic_prop_list
*node_copy
;
4915 node_copy
= ((struct dynamic_prop_list
*)
4916 obstack_copy (objfile_obstack
, *node_ptr
,
4917 sizeof (struct dynamic_prop_list
)));
4918 node_copy
->prop
= (*node_ptr
)->prop
;
4919 *node_ptr
= node_copy
;
4921 node_ptr
= &node_copy
->next
;
4927 /* Recursively copy (deep copy) TYPE, if it is associated with
4928 OBJFILE. Return a new type owned by the gdbarch associated with the type, a
4929 saved type if we have already visited TYPE (using COPIED_TYPES), or TYPE if
4930 it is not associated with OBJFILE. */
4933 copy_type_recursive (struct objfile
*objfile
,
4935 htab_t copied_types
)
4938 struct type
*new_type
;
4940 if (! TYPE_OBJFILE_OWNED (type
))
4943 /* This type shouldn't be pointing to any types in other objfiles;
4944 if it did, the type might disappear unexpectedly. */
4945 gdb_assert (TYPE_OBJFILE (type
) == objfile
);
4947 struct type_pair
pair (type
, nullptr);
4949 slot
= htab_find_slot (copied_types
, &pair
, INSERT
);
4951 return ((struct type_pair
*) *slot
)->newobj
;
4953 new_type
= alloc_type_arch (get_type_arch (type
));
4955 /* We must add the new type to the hash table immediately, in case
4956 we encounter this type again during a recursive call below. */
4957 struct type_pair
*stored
4958 = new (&objfile
->objfile_obstack
) struct type_pair (type
, new_type
);
4962 /* Copy the common fields of types. For the main type, we simply
4963 copy the entire thing and then update specific fields as needed. */
4964 *TYPE_MAIN_TYPE (new_type
) = *TYPE_MAIN_TYPE (type
);
4965 TYPE_OBJFILE_OWNED (new_type
) = 0;
4966 TYPE_OWNER (new_type
).gdbarch
= get_type_arch (type
);
4968 if (TYPE_NAME (type
))
4969 TYPE_NAME (new_type
) = xstrdup (TYPE_NAME (type
));
4971 TYPE_INSTANCE_FLAGS (new_type
) = TYPE_INSTANCE_FLAGS (type
);
4972 TYPE_LENGTH (new_type
) = TYPE_LENGTH (type
);
4974 /* Copy the fields. */
4975 if (TYPE_NFIELDS (type
))
4979 nfields
= TYPE_NFIELDS (type
);
4980 TYPE_FIELDS (new_type
) = (struct field
*)
4981 TYPE_ZALLOC (new_type
, nfields
* sizeof (struct field
));
4982 for (i
= 0; i
< nfields
; i
++)
4984 TYPE_FIELD_ARTIFICIAL (new_type
, i
) =
4985 TYPE_FIELD_ARTIFICIAL (type
, i
);
4986 TYPE_FIELD_BITSIZE (new_type
, i
) = TYPE_FIELD_BITSIZE (type
, i
);
4987 if (TYPE_FIELD_TYPE (type
, i
))
4988 TYPE_FIELD_TYPE (new_type
, i
)
4989 = copy_type_recursive (objfile
, TYPE_FIELD_TYPE (type
, i
),
4991 if (TYPE_FIELD_NAME (type
, i
))
4992 TYPE_FIELD_NAME (new_type
, i
) =
4993 xstrdup (TYPE_FIELD_NAME (type
, i
));
4994 switch (TYPE_FIELD_LOC_KIND (type
, i
))
4996 case FIELD_LOC_KIND_BITPOS
:
4997 SET_FIELD_BITPOS (TYPE_FIELD (new_type
, i
),
4998 TYPE_FIELD_BITPOS (type
, i
));
5000 case FIELD_LOC_KIND_ENUMVAL
:
5001 SET_FIELD_ENUMVAL (TYPE_FIELD (new_type
, i
),
5002 TYPE_FIELD_ENUMVAL (type
, i
));
5004 case FIELD_LOC_KIND_PHYSADDR
:
5005 SET_FIELD_PHYSADDR (TYPE_FIELD (new_type
, i
),
5006 TYPE_FIELD_STATIC_PHYSADDR (type
, i
));
5008 case FIELD_LOC_KIND_PHYSNAME
:
5009 SET_FIELD_PHYSNAME (TYPE_FIELD (new_type
, i
),
5010 xstrdup (TYPE_FIELD_STATIC_PHYSNAME (type
,
5014 internal_error (__FILE__
, __LINE__
,
5015 _("Unexpected type field location kind: %d"),
5016 TYPE_FIELD_LOC_KIND (type
, i
));
5021 /* For range types, copy the bounds information. */
5022 if (TYPE_CODE (type
) == TYPE_CODE_RANGE
)
5024 TYPE_RANGE_DATA (new_type
) = (struct range_bounds
*)
5025 TYPE_ALLOC (new_type
, sizeof (struct range_bounds
));
5026 *TYPE_RANGE_DATA (new_type
) = *TYPE_RANGE_DATA (type
);
5029 if (TYPE_DYN_PROP_LIST (type
) != NULL
)
5030 TYPE_DYN_PROP_LIST (new_type
)
5031 = copy_dynamic_prop_list (&objfile
->objfile_obstack
,
5032 TYPE_DYN_PROP_LIST (type
));
5035 /* Copy pointers to other types. */
5036 if (TYPE_TARGET_TYPE (type
))
5037 TYPE_TARGET_TYPE (new_type
) =
5038 copy_type_recursive (objfile
,
5039 TYPE_TARGET_TYPE (type
),
5042 /* Maybe copy the type_specific bits.
5044 NOTE drow/2005-12-09: We do not copy the C++-specific bits like
5045 base classes and methods. There's no fundamental reason why we
5046 can't, but at the moment it is not needed. */
5048 switch (TYPE_SPECIFIC_FIELD (type
))
5050 case TYPE_SPECIFIC_NONE
:
5052 case TYPE_SPECIFIC_FUNC
:
5053 INIT_FUNC_SPECIFIC (new_type
);
5054 TYPE_CALLING_CONVENTION (new_type
) = TYPE_CALLING_CONVENTION (type
);
5055 TYPE_NO_RETURN (new_type
) = TYPE_NO_RETURN (type
);
5056 TYPE_TAIL_CALL_LIST (new_type
) = NULL
;
5058 case TYPE_SPECIFIC_FLOATFORMAT
:
5059 TYPE_FLOATFORMAT (new_type
) = TYPE_FLOATFORMAT (type
);
5061 case TYPE_SPECIFIC_CPLUS_STUFF
:
5062 INIT_CPLUS_SPECIFIC (new_type
);
5064 case TYPE_SPECIFIC_GNAT_STUFF
:
5065 INIT_GNAT_SPECIFIC (new_type
);
5067 case TYPE_SPECIFIC_SELF_TYPE
:
5068 set_type_self_type (new_type
,
5069 copy_type_recursive (objfile
, TYPE_SELF_TYPE (type
),
5073 gdb_assert_not_reached ("bad type_specific_kind");
5079 /* Make a copy of the given TYPE, except that the pointer & reference
5080 types are not preserved.
5082 This function assumes that the given type has an associated objfile.
5083 This objfile is used to allocate the new type. */
5086 copy_type (const struct type
*type
)
5088 struct type
*new_type
;
5090 gdb_assert (TYPE_OBJFILE_OWNED (type
));
5092 new_type
= alloc_type_copy (type
);
5093 TYPE_INSTANCE_FLAGS (new_type
) = TYPE_INSTANCE_FLAGS (type
);
5094 TYPE_LENGTH (new_type
) = TYPE_LENGTH (type
);
5095 memcpy (TYPE_MAIN_TYPE (new_type
), TYPE_MAIN_TYPE (type
),
5096 sizeof (struct main_type
));
5097 if (TYPE_DYN_PROP_LIST (type
) != NULL
)
5098 TYPE_DYN_PROP_LIST (new_type
)
5099 = copy_dynamic_prop_list (&TYPE_OBJFILE (type
) -> objfile_obstack
,
5100 TYPE_DYN_PROP_LIST (type
));
5105 /* Helper functions to initialize architecture-specific types. */
5107 /* Allocate a type structure associated with GDBARCH and set its
5108 CODE, LENGTH, and NAME fields. */
5111 arch_type (struct gdbarch
*gdbarch
,
5112 enum type_code code
, int bit
, const char *name
)
5116 type
= alloc_type_arch (gdbarch
);
5117 set_type_code (type
, code
);
5118 gdb_assert ((bit
% TARGET_CHAR_BIT
) == 0);
5119 TYPE_LENGTH (type
) = bit
/ TARGET_CHAR_BIT
;
5122 TYPE_NAME (type
) = gdbarch_obstack_strdup (gdbarch
, name
);
5127 /* Allocate a TYPE_CODE_INT type structure associated with GDBARCH.
5128 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
5129 the type's TYPE_UNSIGNED flag. NAME is the type name. */
5132 arch_integer_type (struct gdbarch
*gdbarch
,
5133 int bit
, int unsigned_p
, const char *name
)
5137 t
= arch_type (gdbarch
, TYPE_CODE_INT
, bit
, name
);
5139 TYPE_UNSIGNED (t
) = 1;
5144 /* Allocate a TYPE_CODE_CHAR type structure associated with GDBARCH.
5145 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
5146 the type's TYPE_UNSIGNED flag. NAME is the type name. */
5149 arch_character_type (struct gdbarch
*gdbarch
,
5150 int bit
, int unsigned_p
, const char *name
)
5154 t
= arch_type (gdbarch
, TYPE_CODE_CHAR
, bit
, name
);
5156 TYPE_UNSIGNED (t
) = 1;
5161 /* Allocate a TYPE_CODE_BOOL type structure associated with GDBARCH.
5162 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
5163 the type's TYPE_UNSIGNED flag. NAME is the type name. */
5166 arch_boolean_type (struct gdbarch
*gdbarch
,
5167 int bit
, int unsigned_p
, const char *name
)
5171 t
= arch_type (gdbarch
, TYPE_CODE_BOOL
, bit
, name
);
5173 TYPE_UNSIGNED (t
) = 1;
5178 /* Allocate a TYPE_CODE_FLT type structure associated with GDBARCH.
5179 BIT is the type size in bits; if BIT equals -1, the size is
5180 determined by the floatformat. NAME is the type name. Set the
5181 TYPE_FLOATFORMAT from FLOATFORMATS. */
5184 arch_float_type (struct gdbarch
*gdbarch
,
5185 int bit
, const char *name
,
5186 const struct floatformat
**floatformats
)
5188 const struct floatformat
*fmt
= floatformats
[gdbarch_byte_order (gdbarch
)];
5191 bit
= verify_floatformat (bit
, fmt
);
5192 t
= arch_type (gdbarch
, TYPE_CODE_FLT
, bit
, name
);
5193 TYPE_FLOATFORMAT (t
) = fmt
;
5198 /* Allocate a TYPE_CODE_DECFLOAT type structure associated with GDBARCH.
5199 BIT is the type size in bits. NAME is the type name. */
5202 arch_decfloat_type (struct gdbarch
*gdbarch
, int bit
, const char *name
)
5206 t
= arch_type (gdbarch
, TYPE_CODE_DECFLOAT
, bit
, name
);
5210 /* Allocate a TYPE_CODE_COMPLEX type structure associated with GDBARCH.
5211 NAME is the type name. TARGET_TYPE is the component float type. */
5214 arch_complex_type (struct gdbarch
*gdbarch
,
5215 const char *name
, struct type
*target_type
)
5219 t
= arch_type (gdbarch
, TYPE_CODE_COMPLEX
,
5220 2 * TYPE_LENGTH (target_type
) * TARGET_CHAR_BIT
, name
);
5221 TYPE_TARGET_TYPE (t
) = target_type
;
5225 /* Allocate a TYPE_CODE_PTR type structure associated with GDBARCH.
5226 BIT is the pointer type size in bits. NAME is the type name.
5227 TARGET_TYPE is the pointer target type. Always sets the pointer type's
5228 TYPE_UNSIGNED flag. */
5231 arch_pointer_type (struct gdbarch
*gdbarch
,
5232 int bit
, const char *name
, struct type
*target_type
)
5236 t
= arch_type (gdbarch
, TYPE_CODE_PTR
, bit
, name
);
5237 TYPE_TARGET_TYPE (t
) = target_type
;
5238 TYPE_UNSIGNED (t
) = 1;
5242 /* Allocate a TYPE_CODE_FLAGS type structure associated with GDBARCH.
5243 NAME is the type name. BIT is the size of the flag word in bits. */
5246 arch_flags_type (struct gdbarch
*gdbarch
, const char *name
, int bit
)
5250 type
= arch_type (gdbarch
, TYPE_CODE_FLAGS
, bit
, name
);
5251 TYPE_UNSIGNED (type
) = 1;
5252 TYPE_NFIELDS (type
) = 0;
5253 /* Pre-allocate enough space assuming every field is one bit. */
5255 = (struct field
*) TYPE_ZALLOC (type
, bit
* sizeof (struct field
));
5260 /* Add field to TYPE_CODE_FLAGS type TYPE to indicate the bit at
5261 position BITPOS is called NAME. Pass NAME as "" for fields that
5262 should not be printed. */
5265 append_flags_type_field (struct type
*type
, int start_bitpos
, int nr_bits
,
5266 struct type
*field_type
, const char *name
)
5268 int type_bitsize
= TYPE_LENGTH (type
) * TARGET_CHAR_BIT
;
5269 int field_nr
= TYPE_NFIELDS (type
);
5271 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_FLAGS
);
5272 gdb_assert (TYPE_NFIELDS (type
) + 1 <= type_bitsize
);
5273 gdb_assert (start_bitpos
>= 0 && start_bitpos
< type_bitsize
);
5274 gdb_assert (nr_bits
>= 1 && nr_bits
<= type_bitsize
);
5275 gdb_assert (name
!= NULL
);
5277 TYPE_FIELD_NAME (type
, field_nr
) = xstrdup (name
);
5278 TYPE_FIELD_TYPE (type
, field_nr
) = field_type
;
5279 SET_FIELD_BITPOS (TYPE_FIELD (type
, field_nr
), start_bitpos
);
5280 TYPE_FIELD_BITSIZE (type
, field_nr
) = nr_bits
;
5281 ++TYPE_NFIELDS (type
);
5284 /* Special version of append_flags_type_field to add a flag field.
5285 Add field to TYPE_CODE_FLAGS type TYPE to indicate the bit at
5286 position BITPOS is called NAME. */
5289 append_flags_type_flag (struct type
*type
, int bitpos
, const char *name
)
5291 struct gdbarch
*gdbarch
= get_type_arch (type
);
5293 append_flags_type_field (type
, bitpos
, 1,
5294 builtin_type (gdbarch
)->builtin_bool
,
5298 /* Allocate a TYPE_CODE_STRUCT or TYPE_CODE_UNION type structure (as
5299 specified by CODE) associated with GDBARCH. NAME is the type name. */
5302 arch_composite_type (struct gdbarch
*gdbarch
, const char *name
,
5303 enum type_code code
)
5307 gdb_assert (code
== TYPE_CODE_STRUCT
|| code
== TYPE_CODE_UNION
);
5308 t
= arch_type (gdbarch
, code
, 0, NULL
);
5309 TYPE_NAME (t
) = name
;
5310 INIT_CPLUS_SPECIFIC (t
);
5314 /* Add new field with name NAME and type FIELD to composite type T.
5315 Do not set the field's position or adjust the type's length;
5316 the caller should do so. Return the new field. */
5319 append_composite_type_field_raw (struct type
*t
, const char *name
,
5324 TYPE_NFIELDS (t
) = TYPE_NFIELDS (t
) + 1;
5325 TYPE_FIELDS (t
) = XRESIZEVEC (struct field
, TYPE_FIELDS (t
),
5327 f
= &(TYPE_FIELDS (t
)[TYPE_NFIELDS (t
) - 1]);
5328 memset (f
, 0, sizeof f
[0]);
5329 FIELD_TYPE (f
[0]) = field
;
5330 FIELD_NAME (f
[0]) = name
;
5334 /* Add new field with name NAME and type FIELD to composite type T.
5335 ALIGNMENT (if non-zero) specifies the minimum field alignment. */
5338 append_composite_type_field_aligned (struct type
*t
, const char *name
,
5339 struct type
*field
, int alignment
)
5341 struct field
*f
= append_composite_type_field_raw (t
, name
, field
);
5343 if (TYPE_CODE (t
) == TYPE_CODE_UNION
)
5345 if (TYPE_LENGTH (t
) < TYPE_LENGTH (field
))
5346 TYPE_LENGTH (t
) = TYPE_LENGTH (field
);
5348 else if (TYPE_CODE (t
) == TYPE_CODE_STRUCT
)
5350 TYPE_LENGTH (t
) = TYPE_LENGTH (t
) + TYPE_LENGTH (field
);
5351 if (TYPE_NFIELDS (t
) > 1)
5353 SET_FIELD_BITPOS (f
[0],
5354 (FIELD_BITPOS (f
[-1])
5355 + (TYPE_LENGTH (FIELD_TYPE (f
[-1]))
5356 * TARGET_CHAR_BIT
)));
5362 alignment
*= TARGET_CHAR_BIT
;
5363 left
= FIELD_BITPOS (f
[0]) % alignment
;
5367 SET_FIELD_BITPOS (f
[0], FIELD_BITPOS (f
[0]) + (alignment
- left
));
5368 TYPE_LENGTH (t
) += (alignment
- left
) / TARGET_CHAR_BIT
;
5375 /* Add new field with name NAME and type FIELD to composite type T. */
5378 append_composite_type_field (struct type
*t
, const char *name
,
5381 append_composite_type_field_aligned (t
, name
, field
, 0);
5384 static struct gdbarch_data
*gdbtypes_data
;
5386 const struct builtin_type
*
5387 builtin_type (struct gdbarch
*gdbarch
)
5389 return (const struct builtin_type
*) gdbarch_data (gdbarch
, gdbtypes_data
);
5393 gdbtypes_post_init (struct gdbarch
*gdbarch
)
5395 struct builtin_type
*builtin_type
5396 = GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct builtin_type
);
5399 builtin_type
->builtin_void
5400 = arch_type (gdbarch
, TYPE_CODE_VOID
, TARGET_CHAR_BIT
, "void");
5401 builtin_type
->builtin_char
5402 = arch_integer_type (gdbarch
, TARGET_CHAR_BIT
,
5403 !gdbarch_char_signed (gdbarch
), "char");
5404 TYPE_NOSIGN (builtin_type
->builtin_char
) = 1;
5405 builtin_type
->builtin_signed_char
5406 = arch_integer_type (gdbarch
, TARGET_CHAR_BIT
,
5408 builtin_type
->builtin_unsigned_char
5409 = arch_integer_type (gdbarch
, TARGET_CHAR_BIT
,
5410 1, "unsigned char");
5411 builtin_type
->builtin_short
5412 = arch_integer_type (gdbarch
, gdbarch_short_bit (gdbarch
),
5414 builtin_type
->builtin_unsigned_short
5415 = arch_integer_type (gdbarch
, gdbarch_short_bit (gdbarch
),
5416 1, "unsigned short");
5417 builtin_type
->builtin_int
5418 = arch_integer_type (gdbarch
, gdbarch_int_bit (gdbarch
),
5420 builtin_type
->builtin_unsigned_int
5421 = arch_integer_type (gdbarch
, gdbarch_int_bit (gdbarch
),
5423 builtin_type
->builtin_long
5424 = arch_integer_type (gdbarch
, gdbarch_long_bit (gdbarch
),
5426 builtin_type
->builtin_unsigned_long
5427 = arch_integer_type (gdbarch
, gdbarch_long_bit (gdbarch
),
5428 1, "unsigned long");
5429 builtin_type
->builtin_long_long
5430 = arch_integer_type (gdbarch
, gdbarch_long_long_bit (gdbarch
),
5432 builtin_type
->builtin_unsigned_long_long
5433 = arch_integer_type (gdbarch
, gdbarch_long_long_bit (gdbarch
),
5434 1, "unsigned long long");
5435 builtin_type
->builtin_half
5436 = arch_float_type (gdbarch
, gdbarch_half_bit (gdbarch
),
5437 "half", gdbarch_half_format (gdbarch
));
5438 builtin_type
->builtin_float
5439 = arch_float_type (gdbarch
, gdbarch_float_bit (gdbarch
),
5440 "float", gdbarch_float_format (gdbarch
));
5441 builtin_type
->builtin_double
5442 = arch_float_type (gdbarch
, gdbarch_double_bit (gdbarch
),
5443 "double", gdbarch_double_format (gdbarch
));
5444 builtin_type
->builtin_long_double
5445 = arch_float_type (gdbarch
, gdbarch_long_double_bit (gdbarch
),
5446 "long double", gdbarch_long_double_format (gdbarch
));
5447 builtin_type
->builtin_complex
5448 = arch_complex_type (gdbarch
, "complex",
5449 builtin_type
->builtin_float
);
5450 builtin_type
->builtin_double_complex
5451 = arch_complex_type (gdbarch
, "double complex",
5452 builtin_type
->builtin_double
);
5453 builtin_type
->builtin_string
5454 = arch_type (gdbarch
, TYPE_CODE_STRING
, TARGET_CHAR_BIT
, "string");
5455 builtin_type
->builtin_bool
5456 = arch_type (gdbarch
, TYPE_CODE_BOOL
, TARGET_CHAR_BIT
, "bool");
5458 /* The following three are about decimal floating point types, which
5459 are 32-bits, 64-bits and 128-bits respectively. */
5460 builtin_type
->builtin_decfloat
5461 = arch_decfloat_type (gdbarch
, 32, "_Decimal32");
5462 builtin_type
->builtin_decdouble
5463 = arch_decfloat_type (gdbarch
, 64, "_Decimal64");
5464 builtin_type
->builtin_declong
5465 = arch_decfloat_type (gdbarch
, 128, "_Decimal128");
5467 /* "True" character types. */
5468 builtin_type
->builtin_true_char
5469 = arch_character_type (gdbarch
, TARGET_CHAR_BIT
, 0, "true character");
5470 builtin_type
->builtin_true_unsigned_char
5471 = arch_character_type (gdbarch
, TARGET_CHAR_BIT
, 1, "true character");
5473 /* Fixed-size integer types. */
5474 builtin_type
->builtin_int0
5475 = arch_integer_type (gdbarch
, 0, 0, "int0_t");
5476 builtin_type
->builtin_int8
5477 = arch_integer_type (gdbarch
, 8, 0, "int8_t");
5478 builtin_type
->builtin_uint8
5479 = arch_integer_type (gdbarch
, 8, 1, "uint8_t");
5480 builtin_type
->builtin_int16
5481 = arch_integer_type (gdbarch
, 16, 0, "int16_t");
5482 builtin_type
->builtin_uint16
5483 = arch_integer_type (gdbarch
, 16, 1, "uint16_t");
5484 builtin_type
->builtin_int24
5485 = arch_integer_type (gdbarch
, 24, 0, "int24_t");
5486 builtin_type
->builtin_uint24
5487 = arch_integer_type (gdbarch
, 24, 1, "uint24_t");
5488 builtin_type
->builtin_int32
5489 = arch_integer_type (gdbarch
, 32, 0, "int32_t");
5490 builtin_type
->builtin_uint32
5491 = arch_integer_type (gdbarch
, 32, 1, "uint32_t");
5492 builtin_type
->builtin_int64
5493 = arch_integer_type (gdbarch
, 64, 0, "int64_t");
5494 builtin_type
->builtin_uint64
5495 = arch_integer_type (gdbarch
, 64, 1, "uint64_t");
5496 builtin_type
->builtin_int128
5497 = arch_integer_type (gdbarch
, 128, 0, "int128_t");
5498 builtin_type
->builtin_uint128
5499 = arch_integer_type (gdbarch
, 128, 1, "uint128_t");
5500 TYPE_INSTANCE_FLAGS (builtin_type
->builtin_int8
) |=
5501 TYPE_INSTANCE_FLAG_NOTTEXT
;
5502 TYPE_INSTANCE_FLAGS (builtin_type
->builtin_uint8
) |=
5503 TYPE_INSTANCE_FLAG_NOTTEXT
;
5505 /* Wide character types. */
5506 builtin_type
->builtin_char16
5507 = arch_integer_type (gdbarch
, 16, 1, "char16_t");
5508 builtin_type
->builtin_char32
5509 = arch_integer_type (gdbarch
, 32, 1, "char32_t");
5510 builtin_type
->builtin_wchar
5511 = arch_integer_type (gdbarch
, gdbarch_wchar_bit (gdbarch
),
5512 !gdbarch_wchar_signed (gdbarch
), "wchar_t");
5514 /* Default data/code pointer types. */
5515 builtin_type
->builtin_data_ptr
5516 = lookup_pointer_type (builtin_type
->builtin_void
);
5517 builtin_type
->builtin_func_ptr
5518 = lookup_pointer_type (lookup_function_type (builtin_type
->builtin_void
));
5519 builtin_type
->builtin_func_func
5520 = lookup_function_type (builtin_type
->builtin_func_ptr
);
5522 /* This type represents a GDB internal function. */
5523 builtin_type
->internal_fn
5524 = arch_type (gdbarch
, TYPE_CODE_INTERNAL_FUNCTION
, 0,
5525 "<internal function>");
5527 /* This type represents an xmethod. */
5528 builtin_type
->xmethod
5529 = arch_type (gdbarch
, TYPE_CODE_XMETHOD
, 0, "<xmethod>");
5531 return builtin_type
;
5534 /* This set of objfile-based types is intended to be used by symbol
5535 readers as basic types. */
5537 static const struct objfile_key
<struct objfile_type
,
5538 gdb::noop_deleter
<struct objfile_type
>>
5541 const struct objfile_type
*
5542 objfile_type (struct objfile
*objfile
)
5544 struct gdbarch
*gdbarch
;
5545 struct objfile_type
*objfile_type
= objfile_type_data
.get (objfile
);
5548 return objfile_type
;
5550 objfile_type
= OBSTACK_CALLOC (&objfile
->objfile_obstack
,
5551 1, struct objfile_type
);
5553 /* Use the objfile architecture to determine basic type properties. */
5554 gdbarch
= get_objfile_arch (objfile
);
5557 objfile_type
->builtin_void
5558 = init_type (objfile
, TYPE_CODE_VOID
, TARGET_CHAR_BIT
, "void");
5559 objfile_type
->builtin_char
5560 = init_integer_type (objfile
, TARGET_CHAR_BIT
,
5561 !gdbarch_char_signed (gdbarch
), "char");
5562 TYPE_NOSIGN (objfile_type
->builtin_char
) = 1;
5563 objfile_type
->builtin_signed_char
5564 = init_integer_type (objfile
, TARGET_CHAR_BIT
,
5566 objfile_type
->builtin_unsigned_char
5567 = init_integer_type (objfile
, TARGET_CHAR_BIT
,
5568 1, "unsigned char");
5569 objfile_type
->builtin_short
5570 = init_integer_type (objfile
, gdbarch_short_bit (gdbarch
),
5572 objfile_type
->builtin_unsigned_short
5573 = init_integer_type (objfile
, gdbarch_short_bit (gdbarch
),
5574 1, "unsigned short");
5575 objfile_type
->builtin_int
5576 = init_integer_type (objfile
, gdbarch_int_bit (gdbarch
),
5578 objfile_type
->builtin_unsigned_int
5579 = init_integer_type (objfile
, gdbarch_int_bit (gdbarch
),
5581 objfile_type
->builtin_long
5582 = init_integer_type (objfile
, gdbarch_long_bit (gdbarch
),
5584 objfile_type
->builtin_unsigned_long
5585 = init_integer_type (objfile
, gdbarch_long_bit (gdbarch
),
5586 1, "unsigned long");
5587 objfile_type
->builtin_long_long
5588 = init_integer_type (objfile
, gdbarch_long_long_bit (gdbarch
),
5590 objfile_type
->builtin_unsigned_long_long
5591 = init_integer_type (objfile
, gdbarch_long_long_bit (gdbarch
),
5592 1, "unsigned long long");
5593 objfile_type
->builtin_float
5594 = init_float_type (objfile
, gdbarch_float_bit (gdbarch
),
5595 "float", gdbarch_float_format (gdbarch
));
5596 objfile_type
->builtin_double
5597 = init_float_type (objfile
, gdbarch_double_bit (gdbarch
),
5598 "double", gdbarch_double_format (gdbarch
));
5599 objfile_type
->builtin_long_double
5600 = init_float_type (objfile
, gdbarch_long_double_bit (gdbarch
),
5601 "long double", gdbarch_long_double_format (gdbarch
));
5603 /* This type represents a type that was unrecognized in symbol read-in. */
5604 objfile_type
->builtin_error
5605 = init_type (objfile
, TYPE_CODE_ERROR
, 0, "<unknown type>");
5607 /* The following set of types is used for symbols with no
5608 debug information. */
5609 objfile_type
->nodebug_text_symbol
5610 = init_type (objfile
, TYPE_CODE_FUNC
, TARGET_CHAR_BIT
,
5611 "<text variable, no debug info>");
5612 objfile_type
->nodebug_text_gnu_ifunc_symbol
5613 = init_type (objfile
, TYPE_CODE_FUNC
, TARGET_CHAR_BIT
,
5614 "<text gnu-indirect-function variable, no debug info>");
5615 TYPE_GNU_IFUNC (objfile_type
->nodebug_text_gnu_ifunc_symbol
) = 1;
5616 objfile_type
->nodebug_got_plt_symbol
5617 = init_pointer_type (objfile
, gdbarch_addr_bit (gdbarch
),
5618 "<text from jump slot in .got.plt, no debug info>",
5619 objfile_type
->nodebug_text_symbol
);
5620 objfile_type
->nodebug_data_symbol
5621 = init_nodebug_var_type (objfile
, "<data variable, no debug info>");
5622 objfile_type
->nodebug_unknown_symbol
5623 = init_nodebug_var_type (objfile
, "<variable (not text or data), no debug info>");
5624 objfile_type
->nodebug_tls_symbol
5625 = init_nodebug_var_type (objfile
, "<thread local variable, no debug info>");
5627 /* NOTE: on some targets, addresses and pointers are not necessarily
5631 - gdb's `struct type' always describes the target's
5633 - gdb's `struct value' objects should always hold values in
5635 - gdb's CORE_ADDR values are addresses in the unified virtual
5636 address space that the assembler and linker work with. Thus,
5637 since target_read_memory takes a CORE_ADDR as an argument, it
5638 can access any memory on the target, even if the processor has
5639 separate code and data address spaces.
5641 In this context, objfile_type->builtin_core_addr is a bit odd:
5642 it's a target type for a value the target will never see. It's
5643 only used to hold the values of (typeless) linker symbols, which
5644 are indeed in the unified virtual address space. */
5646 objfile_type
->builtin_core_addr
5647 = init_integer_type (objfile
, gdbarch_addr_bit (gdbarch
), 1,
5650 objfile_type_data
.set (objfile
, objfile_type
);
5651 return objfile_type
;
5655 _initialize_gdbtypes (void)
5657 gdbtypes_data
= gdbarch_data_register_post_init (gdbtypes_post_init
);
5659 add_setshow_zuinteger_cmd ("overload", no_class
, &overload_debug
,
5660 _("Set debugging of C++ overloading."),
5661 _("Show debugging of C++ overloading."),
5662 _("When enabled, ranking of the "
5663 "functions is displayed."),
5665 show_overload_debug
,
5666 &setdebuglist
, &showdebuglist
);
5668 /* Add user knob for controlling resolution of opaque types. */
5669 add_setshow_boolean_cmd ("opaque-type-resolution", class_support
,
5670 &opaque_type_resolution
,
5671 _("Set resolution of opaque struct/class/union"
5672 " types (if set before loading symbols)."),
5673 _("Show resolution of opaque struct/class/union"
5674 " types (if set before loading symbols)."),
5676 show_opaque_type_resolution
,
5677 &setlist
, &showlist
);
5679 /* Add an option to permit non-strict type checking. */
5680 add_setshow_boolean_cmd ("type", class_support
,
5681 &strict_type_checking
,
5682 _("Set strict type checking."),
5683 _("Show strict type checking."),
5685 show_strict_type_checking
,
5686 &setchecklist
, &showchecklist
);
5689 /* See gdbtypes.h. */
5691 type_byte_order (const struct type
*type
)
5693 bfd_endian byteorder
= gdbarch_byte_order (get_type_arch (type
));
5694 if (TYPE_ENDIANITY_NOT_DEFAULT (type
))
5696 if (byteorder
== BFD_ENDIAN_BIG
)
5697 return BFD_ENDIAN_LITTLE
;
5698 else if (byteorder
== BFD_ENDIAN_LITTLE
)
5699 return BFD_ENDIAN_BIG
;
5701 return BFD_ENDIAN_UNKNOWN
;