1 /* Support routines for manipulating internal types for GDB.
3 Copyright (C) 1992-2014 Free Software Foundation, Inc.
5 Contributed by Cygnus Support, using pieces from other GDB modules.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
29 #include "expression.h"
34 #include "complaints.h"
37 #include "gdb_assert.h"
39 #include "exceptions.h"
40 #include "cp-support.h"
42 #include "dwarf2loc.h"
45 /* Initialize BADNESS constants. */
47 const struct rank LENGTH_MISMATCH_BADNESS = {100,0};
49 const struct rank TOO_FEW_PARAMS_BADNESS = {100,0};
50 const struct rank INCOMPATIBLE_TYPE_BADNESS = {100,0};
52 const struct rank EXACT_MATCH_BADNESS = {0,0};
54 const struct rank INTEGER_PROMOTION_BADNESS = {1,0};
55 const struct rank FLOAT_PROMOTION_BADNESS = {1,0};
56 const struct rank BASE_PTR_CONVERSION_BADNESS = {1,0};
57 const struct rank INTEGER_CONVERSION_BADNESS = {2,0};
58 const struct rank FLOAT_CONVERSION_BADNESS = {2,0};
59 const struct rank INT_FLOAT_CONVERSION_BADNESS = {2,0};
60 const struct rank VOID_PTR_CONVERSION_BADNESS = {2,0};
61 const struct rank BOOL_CONVERSION_BADNESS = {3,0};
62 const struct rank BASE_CONVERSION_BADNESS = {2,0};
63 const struct rank REFERENCE_CONVERSION_BADNESS = {2,0};
64 const struct rank NULL_POINTER_CONVERSION_BADNESS = {2,0};
65 const struct rank NS_POINTER_CONVERSION_BADNESS = {10,0};
66 const struct rank NS_INTEGER_POINTER_CONVERSION_BADNESS = {3,0};
68 /* Floatformat pairs. */
69 const struct floatformat *floatformats_ieee_half[BFD_ENDIAN_UNKNOWN] = {
70 &floatformat_ieee_half_big,
71 &floatformat_ieee_half_little
73 const struct floatformat *floatformats_ieee_single[BFD_ENDIAN_UNKNOWN] = {
74 &floatformat_ieee_single_big,
75 &floatformat_ieee_single_little
77 const struct floatformat *floatformats_ieee_double[BFD_ENDIAN_UNKNOWN] = {
78 &floatformat_ieee_double_big,
79 &floatformat_ieee_double_little
81 const struct floatformat *floatformats_ieee_double_littlebyte_bigword[BFD_ENDIAN_UNKNOWN] = {
82 &floatformat_ieee_double_big,
83 &floatformat_ieee_double_littlebyte_bigword
85 const struct floatformat *floatformats_i387_ext[BFD_ENDIAN_UNKNOWN] = {
86 &floatformat_i387_ext,
89 const struct floatformat *floatformats_m68881_ext[BFD_ENDIAN_UNKNOWN] = {
90 &floatformat_m68881_ext,
91 &floatformat_m68881_ext
93 const struct floatformat *floatformats_arm_ext[BFD_ENDIAN_UNKNOWN] = {
94 &floatformat_arm_ext_big,
95 &floatformat_arm_ext_littlebyte_bigword
97 const struct floatformat *floatformats_ia64_spill[BFD_ENDIAN_UNKNOWN] = {
98 &floatformat_ia64_spill_big,
99 &floatformat_ia64_spill_little
101 const struct floatformat *floatformats_ia64_quad[BFD_ENDIAN_UNKNOWN] = {
102 &floatformat_ia64_quad_big,
103 &floatformat_ia64_quad_little
105 const struct floatformat *floatformats_vax_f[BFD_ENDIAN_UNKNOWN] = {
109 const struct floatformat *floatformats_vax_d[BFD_ENDIAN_UNKNOWN] = {
113 const struct floatformat *floatformats_ibm_long_double[BFD_ENDIAN_UNKNOWN] = {
114 &floatformat_ibm_long_double_big,
115 &floatformat_ibm_long_double_little
118 /* Should opaque types be resolved? */
120 static int opaque_type_resolution = 1;
122 /* A flag to enable printing of debugging information of C++
125 unsigned int overload_debug = 0;
127 /* A flag to enable strict type checking. */
129 static int strict_type_checking = 1;
131 /* A function to show whether opaque types are resolved. */
134 show_opaque_type_resolution (struct ui_file *file, int from_tty,
135 struct cmd_list_element *c,
138 fprintf_filtered (file, _("Resolution of opaque struct/class/union types "
139 "(if set before loading symbols) is %s.\n"),
143 /* A function to show whether C++ overload debugging is enabled. */
146 show_overload_debug (struct ui_file *file, int from_tty,
147 struct cmd_list_element *c, const char *value)
149 fprintf_filtered (file, _("Debugging of C++ overloading is %s.\n"),
153 /* A function to show the status of strict type checking. */
156 show_strict_type_checking (struct ui_file *file, int from_tty,
157 struct cmd_list_element *c, const char *value)
159 fprintf_filtered (file, _("Strict type checking is %s.\n"), value);
163 /* Allocate a new OBJFILE-associated type structure and fill it
164 with some defaults. Space for the type structure is allocated
165 on the objfile's objfile_obstack. */
168 alloc_type (struct objfile *objfile)
172 gdb_assert (objfile != NULL);
174 /* Alloc the structure and start off with all fields zeroed. */
175 type = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct type);
176 TYPE_MAIN_TYPE (type) = OBSTACK_ZALLOC (&objfile->objfile_obstack,
178 OBJSTAT (objfile, n_types++);
180 TYPE_OBJFILE_OWNED (type) = 1;
181 TYPE_OWNER (type).objfile = objfile;
183 /* Initialize the fields that might not be zero. */
185 TYPE_CODE (type) = TYPE_CODE_UNDEF;
186 TYPE_VPTR_FIELDNO (type) = -1;
187 TYPE_CHAIN (type) = type; /* Chain back to itself. */
192 /* Allocate a new GDBARCH-associated type structure and fill it
193 with some defaults. Space for the type structure is allocated
197 alloc_type_arch (struct gdbarch *gdbarch)
201 gdb_assert (gdbarch != NULL);
203 /* Alloc the structure and start off with all fields zeroed. */
205 type = XCNEW (struct type);
206 TYPE_MAIN_TYPE (type) = XCNEW (struct main_type);
208 TYPE_OBJFILE_OWNED (type) = 0;
209 TYPE_OWNER (type).gdbarch = gdbarch;
211 /* Initialize the fields that might not be zero. */
213 TYPE_CODE (type) = TYPE_CODE_UNDEF;
214 TYPE_VPTR_FIELDNO (type) = -1;
215 TYPE_CHAIN (type) = type; /* Chain back to itself. */
220 /* If TYPE is objfile-associated, allocate a new type structure
221 associated with the same objfile. If TYPE is gdbarch-associated,
222 allocate a new type structure associated with the same gdbarch. */
225 alloc_type_copy (const struct type *type)
227 if (TYPE_OBJFILE_OWNED (type))
228 return alloc_type (TYPE_OWNER (type).objfile);
230 return alloc_type_arch (TYPE_OWNER (type).gdbarch);
233 /* If TYPE is gdbarch-associated, return that architecture.
234 If TYPE is objfile-associated, return that objfile's architecture. */
237 get_type_arch (const struct type *type)
239 if (TYPE_OBJFILE_OWNED (type))
240 return get_objfile_arch (TYPE_OWNER (type).objfile);
242 return TYPE_OWNER (type).gdbarch;
245 /* See gdbtypes.h. */
248 get_target_type (struct type *type)
252 type = TYPE_TARGET_TYPE (type);
254 type = check_typedef (type);
260 /* Alloc a new type instance structure, fill it with some defaults,
261 and point it at OLDTYPE. Allocate the new type instance from the
262 same place as OLDTYPE. */
265 alloc_type_instance (struct type *oldtype)
269 /* Allocate the structure. */
271 if (! TYPE_OBJFILE_OWNED (oldtype))
272 type = XCNEW (struct type);
274 type = OBSTACK_ZALLOC (&TYPE_OBJFILE (oldtype)->objfile_obstack,
277 TYPE_MAIN_TYPE (type) = TYPE_MAIN_TYPE (oldtype);
279 TYPE_CHAIN (type) = type; /* Chain back to itself for now. */
284 /* Clear all remnants of the previous type at TYPE, in preparation for
285 replacing it with something else. Preserve owner information. */
288 smash_type (struct type *type)
290 int objfile_owned = TYPE_OBJFILE_OWNED (type);
291 union type_owner owner = TYPE_OWNER (type);
293 memset (TYPE_MAIN_TYPE (type), 0, sizeof (struct main_type));
295 /* Restore owner information. */
296 TYPE_OBJFILE_OWNED (type) = objfile_owned;
297 TYPE_OWNER (type) = owner;
299 /* For now, delete the rings. */
300 TYPE_CHAIN (type) = type;
302 /* For now, leave the pointer/reference types alone. */
305 /* Lookup a pointer to a type TYPE. TYPEPTR, if nonzero, points
306 to a pointer to memory where the pointer type should be stored.
307 If *TYPEPTR is zero, update it to point to the pointer type we return.
308 We allocate new memory if needed. */
311 make_pointer_type (struct type *type, struct type **typeptr)
313 struct type *ntype; /* New type */
316 ntype = TYPE_POINTER_TYPE (type);
321 return ntype; /* Don't care about alloc,
322 and have new type. */
323 else if (*typeptr == 0)
325 *typeptr = ntype; /* Tracking alloc, and have new type. */
330 if (typeptr == 0 || *typeptr == 0) /* We'll need to allocate one. */
332 ntype = alloc_type_copy (type);
336 else /* We have storage, but need to reset it. */
339 chain = TYPE_CHAIN (ntype);
341 TYPE_CHAIN (ntype) = chain;
344 TYPE_TARGET_TYPE (ntype) = type;
345 TYPE_POINTER_TYPE (type) = ntype;
347 /* FIXME! Assumes the machine has only one representation for pointers! */
350 = gdbarch_ptr_bit (get_type_arch (type)) / TARGET_CHAR_BIT;
351 TYPE_CODE (ntype) = TYPE_CODE_PTR;
353 /* Mark pointers as unsigned. The target converts between pointers
354 and addresses (CORE_ADDRs) using gdbarch_pointer_to_address and
355 gdbarch_address_to_pointer. */
356 TYPE_UNSIGNED (ntype) = 1;
358 /* Update the length of all the other variants of this type. */
359 chain = TYPE_CHAIN (ntype);
360 while (chain != ntype)
362 TYPE_LENGTH (chain) = TYPE_LENGTH (ntype);
363 chain = TYPE_CHAIN (chain);
369 /* Given a type TYPE, return a type of pointers to that type.
370 May need to construct such a type if this is the first use. */
373 lookup_pointer_type (struct type *type)
375 return make_pointer_type (type, (struct type **) 0);
378 /* Lookup a C++ `reference' to a type TYPE. TYPEPTR, if nonzero,
379 points to a pointer to memory where the reference type should be
380 stored. If *TYPEPTR is zero, update it to point to the reference
381 type we return. We allocate new memory if needed. */
384 make_reference_type (struct type *type, struct type **typeptr)
386 struct type *ntype; /* New type */
389 ntype = TYPE_REFERENCE_TYPE (type);
394 return ntype; /* Don't care about alloc,
395 and have new type. */
396 else if (*typeptr == 0)
398 *typeptr = ntype; /* Tracking alloc, and have new type. */
403 if (typeptr == 0 || *typeptr == 0) /* We'll need to allocate one. */
405 ntype = alloc_type_copy (type);
409 else /* We have storage, but need to reset it. */
412 chain = TYPE_CHAIN (ntype);
414 TYPE_CHAIN (ntype) = chain;
417 TYPE_TARGET_TYPE (ntype) = type;
418 TYPE_REFERENCE_TYPE (type) = ntype;
420 /* FIXME! Assume the machine has only one representation for
421 references, and that it matches the (only) representation for
424 TYPE_LENGTH (ntype) =
425 gdbarch_ptr_bit (get_type_arch (type)) / TARGET_CHAR_BIT;
426 TYPE_CODE (ntype) = TYPE_CODE_REF;
428 if (!TYPE_REFERENCE_TYPE (type)) /* Remember it, if don't have one. */
429 TYPE_REFERENCE_TYPE (type) = ntype;
431 /* Update the length of all the other variants of this type. */
432 chain = TYPE_CHAIN (ntype);
433 while (chain != ntype)
435 TYPE_LENGTH (chain) = TYPE_LENGTH (ntype);
436 chain = TYPE_CHAIN (chain);
442 /* Same as above, but caller doesn't care about memory allocation
446 lookup_reference_type (struct type *type)
448 return make_reference_type (type, (struct type **) 0);
451 /* Lookup a function type that returns type TYPE. TYPEPTR, if
452 nonzero, points to a pointer to memory where the function type
453 should be stored. If *TYPEPTR is zero, update it to point to the
454 function type we return. We allocate new memory if needed. */
457 make_function_type (struct type *type, struct type **typeptr)
459 struct type *ntype; /* New type */
461 if (typeptr == 0 || *typeptr == 0) /* We'll need to allocate one. */
463 ntype = alloc_type_copy (type);
467 else /* We have storage, but need to reset it. */
473 TYPE_TARGET_TYPE (ntype) = type;
475 TYPE_LENGTH (ntype) = 1;
476 TYPE_CODE (ntype) = TYPE_CODE_FUNC;
478 INIT_FUNC_SPECIFIC (ntype);
483 /* Given a type TYPE, return a type of functions that return that type.
484 May need to construct such a type if this is the first use. */
487 lookup_function_type (struct type *type)
489 return make_function_type (type, (struct type **) 0);
492 /* Given a type TYPE and argument types, return the appropriate
493 function type. If the final type in PARAM_TYPES is NULL, make a
497 lookup_function_type_with_arguments (struct type *type,
499 struct type **param_types)
501 struct type *fn = make_function_type (type, (struct type **) 0);
506 if (param_types[nparams - 1] == NULL)
509 TYPE_VARARGS (fn) = 1;
511 else if (TYPE_CODE (check_typedef (param_types[nparams - 1]))
515 /* Caller should have ensured this. */
516 gdb_assert (nparams == 0);
517 TYPE_PROTOTYPED (fn) = 1;
521 TYPE_NFIELDS (fn) = nparams;
522 TYPE_FIELDS (fn) = TYPE_ZALLOC (fn, nparams * sizeof (struct field));
523 for (i = 0; i < nparams; ++i)
524 TYPE_FIELD_TYPE (fn, i) = param_types[i];
529 /* Identify address space identifier by name --
530 return the integer flag defined in gdbtypes.h. */
533 address_space_name_to_int (struct gdbarch *gdbarch, char *space_identifier)
537 /* Check for known address space delimiters. */
538 if (!strcmp (space_identifier, "code"))
539 return TYPE_INSTANCE_FLAG_CODE_SPACE;
540 else if (!strcmp (space_identifier, "data"))
541 return TYPE_INSTANCE_FLAG_DATA_SPACE;
542 else if (gdbarch_address_class_name_to_type_flags_p (gdbarch)
543 && gdbarch_address_class_name_to_type_flags (gdbarch,
548 error (_("Unknown address space specifier: \"%s\""), space_identifier);
551 /* Identify address space identifier by integer flag as defined in
552 gdbtypes.h -- return the string version of the adress space name. */
555 address_space_int_to_name (struct gdbarch *gdbarch, int space_flag)
557 if (space_flag & TYPE_INSTANCE_FLAG_CODE_SPACE)
559 else if (space_flag & TYPE_INSTANCE_FLAG_DATA_SPACE)
561 else if ((space_flag & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL)
562 && gdbarch_address_class_type_flags_to_name_p (gdbarch))
563 return gdbarch_address_class_type_flags_to_name (gdbarch, space_flag);
568 /* Create a new type with instance flags NEW_FLAGS, based on TYPE.
570 If STORAGE is non-NULL, create the new type instance there.
571 STORAGE must be in the same obstack as TYPE. */
574 make_qualified_type (struct type *type, int new_flags,
575 struct type *storage)
582 if (TYPE_INSTANCE_FLAGS (ntype) == new_flags)
584 ntype = TYPE_CHAIN (ntype);
586 while (ntype != type);
588 /* Create a new type instance. */
590 ntype = alloc_type_instance (type);
593 /* If STORAGE was provided, it had better be in the same objfile
594 as TYPE. Otherwise, we can't link it into TYPE's cv chain:
595 if one objfile is freed and the other kept, we'd have
596 dangling pointers. */
597 gdb_assert (TYPE_OBJFILE (type) == TYPE_OBJFILE (storage));
600 TYPE_MAIN_TYPE (ntype) = TYPE_MAIN_TYPE (type);
601 TYPE_CHAIN (ntype) = ntype;
604 /* Pointers or references to the original type are not relevant to
606 TYPE_POINTER_TYPE (ntype) = (struct type *) 0;
607 TYPE_REFERENCE_TYPE (ntype) = (struct type *) 0;
609 /* Chain the new qualified type to the old type. */
610 TYPE_CHAIN (ntype) = TYPE_CHAIN (type);
611 TYPE_CHAIN (type) = ntype;
613 /* Now set the instance flags and return the new type. */
614 TYPE_INSTANCE_FLAGS (ntype) = new_flags;
616 /* Set length of new type to that of the original type. */
617 TYPE_LENGTH (ntype) = TYPE_LENGTH (type);
622 /* Make an address-space-delimited variant of a type -- a type that
623 is identical to the one supplied except that it has an address
624 space attribute attached to it (such as "code" or "data").
626 The space attributes "code" and "data" are for Harvard
627 architectures. The address space attributes are for architectures
628 which have alternately sized pointers or pointers with alternate
632 make_type_with_address_space (struct type *type, int space_flag)
634 int new_flags = ((TYPE_INSTANCE_FLAGS (type)
635 & ~(TYPE_INSTANCE_FLAG_CODE_SPACE
636 | TYPE_INSTANCE_FLAG_DATA_SPACE
637 | TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL))
640 return make_qualified_type (type, new_flags, NULL);
643 /* Make a "c-v" variant of a type -- a type that is identical to the
644 one supplied except that it may have const or volatile attributes
645 CNST is a flag for setting the const attribute
646 VOLTL is a flag for setting the volatile attribute
647 TYPE is the base type whose variant we are creating.
649 If TYPEPTR and *TYPEPTR are non-zero, then *TYPEPTR points to
650 storage to hold the new qualified type; *TYPEPTR and TYPE must be
651 in the same objfile. Otherwise, allocate fresh memory for the new
652 type whereever TYPE lives. If TYPEPTR is non-zero, set it to the
653 new type we construct. */
656 make_cv_type (int cnst, int voltl,
658 struct type **typeptr)
660 struct type *ntype; /* New type */
662 int new_flags = (TYPE_INSTANCE_FLAGS (type)
663 & ~(TYPE_INSTANCE_FLAG_CONST
664 | TYPE_INSTANCE_FLAG_VOLATILE));
667 new_flags |= TYPE_INSTANCE_FLAG_CONST;
670 new_flags |= TYPE_INSTANCE_FLAG_VOLATILE;
672 if (typeptr && *typeptr != NULL)
674 /* TYPE and *TYPEPTR must be in the same objfile. We can't have
675 a C-V variant chain that threads across objfiles: if one
676 objfile gets freed, then the other has a broken C-V chain.
678 This code used to try to copy over the main type from TYPE to
679 *TYPEPTR if they were in different objfiles, but that's
680 wrong, too: TYPE may have a field list or member function
681 lists, which refer to types of their own, etc. etc. The
682 whole shebang would need to be copied over recursively; you
683 can't have inter-objfile pointers. The only thing to do is
684 to leave stub types as stub types, and look them up afresh by
685 name each time you encounter them. */
686 gdb_assert (TYPE_OBJFILE (*typeptr) == TYPE_OBJFILE (type));
689 ntype = make_qualified_type (type, new_flags,
690 typeptr ? *typeptr : NULL);
698 /* Make a 'restrict'-qualified version of TYPE. */
701 make_restrict_type (struct type *type)
703 return make_qualified_type (type,
704 (TYPE_INSTANCE_FLAGS (type)
705 | TYPE_INSTANCE_FLAG_RESTRICT),
709 /* Replace the contents of ntype with the type *type. This changes the
710 contents, rather than the pointer for TYPE_MAIN_TYPE (ntype); thus
711 the changes are propogated to all types in the TYPE_CHAIN.
713 In order to build recursive types, it's inevitable that we'll need
714 to update types in place --- but this sort of indiscriminate
715 smashing is ugly, and needs to be replaced with something more
716 controlled. TYPE_MAIN_TYPE is a step in this direction; it's not
717 clear if more steps are needed. */
720 replace_type (struct type *ntype, struct type *type)
724 /* These two types had better be in the same objfile. Otherwise,
725 the assignment of one type's main type structure to the other
726 will produce a type with references to objects (names; field
727 lists; etc.) allocated on an objfile other than its own. */
728 gdb_assert (TYPE_OBJFILE (ntype) == TYPE_OBJFILE (ntype));
730 *TYPE_MAIN_TYPE (ntype) = *TYPE_MAIN_TYPE (type);
732 /* The type length is not a part of the main type. Update it for
733 each type on the variant chain. */
737 /* Assert that this element of the chain has no address-class bits
738 set in its flags. Such type variants might have type lengths
739 which are supposed to be different from the non-address-class
740 variants. This assertion shouldn't ever be triggered because
741 symbol readers which do construct address-class variants don't
742 call replace_type(). */
743 gdb_assert (TYPE_ADDRESS_CLASS_ALL (chain) == 0);
745 TYPE_LENGTH (chain) = TYPE_LENGTH (type);
746 chain = TYPE_CHAIN (chain);
748 while (ntype != chain);
750 /* Assert that the two types have equivalent instance qualifiers.
751 This should be true for at least all of our debug readers. */
752 gdb_assert (TYPE_INSTANCE_FLAGS (ntype) == TYPE_INSTANCE_FLAGS (type));
755 /* Implement direct support for MEMBER_TYPE in GNU C++.
756 May need to construct such a type if this is the first use.
757 The TYPE is the type of the member. The DOMAIN is the type
758 of the aggregate that the member belongs to. */
761 lookup_memberptr_type (struct type *type, struct type *domain)
765 mtype = alloc_type_copy (type);
766 smash_to_memberptr_type (mtype, domain, type);
770 /* Return a pointer-to-method type, for a method of type TO_TYPE. */
773 lookup_methodptr_type (struct type *to_type)
777 mtype = alloc_type_copy (to_type);
778 smash_to_methodptr_type (mtype, to_type);
782 /* Allocate a stub method whose return type is TYPE. This apparently
783 happens for speed of symbol reading, since parsing out the
784 arguments to the method is cpu-intensive, the way we are doing it.
785 So, we will fill in arguments later. This always returns a fresh
789 allocate_stub_method (struct type *type)
793 mtype = alloc_type_copy (type);
794 TYPE_CODE (mtype) = TYPE_CODE_METHOD;
795 TYPE_LENGTH (mtype) = 1;
796 TYPE_STUB (mtype) = 1;
797 TYPE_TARGET_TYPE (mtype) = type;
798 /* _DOMAIN_TYPE (mtype) = unknown yet */
802 /* Create a range type with a dynamic range from LOW_BOUND to
803 HIGH_BOUND, inclusive. See create_range_type for further details. */
806 create_range_type (struct type *result_type, struct type *index_type,
807 const struct dynamic_prop *low_bound,
808 const struct dynamic_prop *high_bound)
810 if (result_type == NULL)
811 result_type = alloc_type_copy (index_type);
812 TYPE_CODE (result_type) = TYPE_CODE_RANGE;
813 TYPE_TARGET_TYPE (result_type) = index_type;
814 if (TYPE_STUB (index_type))
815 TYPE_TARGET_STUB (result_type) = 1;
817 TYPE_LENGTH (result_type) = TYPE_LENGTH (check_typedef (index_type));
819 TYPE_RANGE_DATA (result_type) = (struct range_bounds *)
820 TYPE_ZALLOC (result_type, sizeof (struct range_bounds));
821 TYPE_RANGE_DATA (result_type)->low = *low_bound;
822 TYPE_RANGE_DATA (result_type)->high = *high_bound;
824 if (low_bound->kind == PROP_CONST && low_bound->data.const_val >= 0)
825 TYPE_UNSIGNED (result_type) = 1;
830 /* Create a range type using either a blank type supplied in
831 RESULT_TYPE, or creating a new type, inheriting the objfile from
834 Indices will be of type INDEX_TYPE, and will range from LOW_BOUND
835 to HIGH_BOUND, inclusive.
837 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
838 sure it is TYPE_CODE_UNDEF before we bash it into a range type? */
841 create_static_range_type (struct type *result_type, struct type *index_type,
842 LONGEST low_bound, LONGEST high_bound)
844 struct dynamic_prop low, high;
846 low.kind = PROP_CONST;
847 low.data.const_val = low_bound;
849 high.kind = PROP_CONST;
850 high.data.const_val = high_bound;
852 result_type = create_range_type (result_type, index_type, &low, &high);
857 /* Predicate tests whether BOUNDS are static. Returns 1 if all bounds values
858 are static, otherwise returns 0. */
861 has_static_range (const struct range_bounds *bounds)
863 return (bounds->low.kind == PROP_CONST
864 && bounds->high.kind == PROP_CONST);
868 /* Set *LOWP and *HIGHP to the lower and upper bounds of discrete type
869 TYPE. Return 1 if type is a range type, 0 if it is discrete (and
870 bounds will fit in LONGEST), or -1 otherwise. */
873 get_discrete_bounds (struct type *type, LONGEST *lowp, LONGEST *highp)
875 CHECK_TYPEDEF (type);
876 switch (TYPE_CODE (type))
878 case TYPE_CODE_RANGE:
879 *lowp = TYPE_LOW_BOUND (type);
880 *highp = TYPE_HIGH_BOUND (type);
883 if (TYPE_NFIELDS (type) > 0)
885 /* The enums may not be sorted by value, so search all
889 *lowp = *highp = TYPE_FIELD_ENUMVAL (type, 0);
890 for (i = 0; i < TYPE_NFIELDS (type); i++)
892 if (TYPE_FIELD_ENUMVAL (type, i) < *lowp)
893 *lowp = TYPE_FIELD_ENUMVAL (type, i);
894 if (TYPE_FIELD_ENUMVAL (type, i) > *highp)
895 *highp = TYPE_FIELD_ENUMVAL (type, i);
898 /* Set unsigned indicator if warranted. */
901 TYPE_UNSIGNED (type) = 1;
915 if (TYPE_LENGTH (type) > sizeof (LONGEST)) /* Too big */
917 if (!TYPE_UNSIGNED (type))
919 *lowp = -(1 << (TYPE_LENGTH (type) * TARGET_CHAR_BIT - 1));
923 /* ... fall through for unsigned ints ... */
926 /* This round-about calculation is to avoid shifting by
927 TYPE_LENGTH (type) * TARGET_CHAR_BIT, which will not work
928 if TYPE_LENGTH (type) == sizeof (LONGEST). */
929 *highp = 1 << (TYPE_LENGTH (type) * TARGET_CHAR_BIT - 1);
930 *highp = (*highp - 1) | *highp;
937 /* Assuming TYPE is a simple, non-empty array type, compute its upper
938 and lower bound. Save the low bound into LOW_BOUND if not NULL.
939 Save the high bound into HIGH_BOUND if not NULL.
941 Return 1 if the operation was successful. Return zero otherwise,
942 in which case the values of LOW_BOUND and HIGH_BOUNDS are unmodified.
944 We now simply use get_discrete_bounds call to get the values
945 of the low and high bounds.
946 get_discrete_bounds can return three values:
947 1, meaning that index is a range,
948 0, meaning that index is a discrete type,
949 or -1 for failure. */
952 get_array_bounds (struct type *type, LONGEST *low_bound, LONGEST *high_bound)
954 struct type *index = TYPE_INDEX_TYPE (type);
962 res = get_discrete_bounds (index, &low, &high);
966 /* Check if the array bounds are undefined. */
968 && ((low_bound && TYPE_ARRAY_LOWER_BOUND_IS_UNDEFINED (type))
969 || (high_bound && TYPE_ARRAY_UPPER_BOUND_IS_UNDEFINED (type))))
981 /* Create an array type using either a blank type supplied in
982 RESULT_TYPE, or creating a new type, inheriting the objfile from
985 Elements will be of type ELEMENT_TYPE, the indices will be of type
988 If BIT_STRIDE is not zero, build a packed array type whose element
989 size is BIT_STRIDE. Otherwise, ignore this parameter.
991 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
992 sure it is TYPE_CODE_UNDEF before we bash it into an array
996 create_array_type_with_stride (struct type *result_type,
997 struct type *element_type,
998 struct type *range_type,
999 unsigned int bit_stride)
1001 if (result_type == NULL)
1002 result_type = alloc_type_copy (range_type);
1004 TYPE_CODE (result_type) = TYPE_CODE_ARRAY;
1005 TYPE_TARGET_TYPE (result_type) = element_type;
1006 if (has_static_range (TYPE_RANGE_DATA (range_type)))
1008 LONGEST low_bound, high_bound;
1010 if (get_discrete_bounds (range_type, &low_bound, &high_bound) < 0)
1011 low_bound = high_bound = 0;
1012 CHECK_TYPEDEF (element_type);
1013 /* Be careful when setting the array length. Ada arrays can be
1014 empty arrays with the high_bound being smaller than the low_bound.
1015 In such cases, the array length should be zero. */
1016 if (high_bound < low_bound)
1017 TYPE_LENGTH (result_type) = 0;
1018 else if (bit_stride > 0)
1019 TYPE_LENGTH (result_type) =
1020 (bit_stride * (high_bound - low_bound + 1) + 7) / 8;
1022 TYPE_LENGTH (result_type) =
1023 TYPE_LENGTH (element_type) * (high_bound - low_bound + 1);
1027 /* This type is dynamic and its length needs to be computed
1028 on demand. In the meantime, avoid leaving the TYPE_LENGTH
1029 undefined by setting it to zero. Although we are not expected
1030 to trust TYPE_LENGTH in this case, setting the size to zero
1031 allows us to avoid allocating objects of random sizes in case
1032 we accidently do. */
1033 TYPE_LENGTH (result_type) = 0;
1036 TYPE_NFIELDS (result_type) = 1;
1037 TYPE_FIELDS (result_type) =
1038 (struct field *) TYPE_ZALLOC (result_type, sizeof (struct field));
1039 TYPE_INDEX_TYPE (result_type) = range_type;
1040 TYPE_VPTR_FIELDNO (result_type) = -1;
1042 TYPE_FIELD_BITSIZE (result_type, 0) = bit_stride;
1044 /* TYPE_FLAG_TARGET_STUB will take care of zero length arrays. */
1045 if (TYPE_LENGTH (result_type) == 0)
1046 TYPE_TARGET_STUB (result_type) = 1;
1051 /* Same as create_array_type_with_stride but with no bit_stride
1052 (BIT_STRIDE = 0), thus building an unpacked array. */
1055 create_array_type (struct type *result_type,
1056 struct type *element_type,
1057 struct type *range_type)
1059 return create_array_type_with_stride (result_type, element_type,
1064 lookup_array_range_type (struct type *element_type,
1065 LONGEST low_bound, LONGEST high_bound)
1067 struct gdbarch *gdbarch = get_type_arch (element_type);
1068 struct type *index_type = builtin_type (gdbarch)->builtin_int;
1069 struct type *range_type
1070 = create_static_range_type (NULL, index_type, low_bound, high_bound);
1072 return create_array_type (NULL, element_type, range_type);
1075 /* Create a string type using either a blank type supplied in
1076 RESULT_TYPE, or creating a new type. String types are similar
1077 enough to array of char types that we can use create_array_type to
1078 build the basic type and then bash it into a string type.
1080 For fixed length strings, the range type contains 0 as the lower
1081 bound and the length of the string minus one as the upper bound.
1083 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
1084 sure it is TYPE_CODE_UNDEF before we bash it into a string
1088 create_string_type (struct type *result_type,
1089 struct type *string_char_type,
1090 struct type *range_type)
1092 result_type = create_array_type (result_type,
1095 TYPE_CODE (result_type) = TYPE_CODE_STRING;
1100 lookup_string_range_type (struct type *string_char_type,
1101 LONGEST low_bound, LONGEST high_bound)
1103 struct type *result_type;
1105 result_type = lookup_array_range_type (string_char_type,
1106 low_bound, high_bound);
1107 TYPE_CODE (result_type) = TYPE_CODE_STRING;
1112 create_set_type (struct type *result_type, struct type *domain_type)
1114 if (result_type == NULL)
1115 result_type = alloc_type_copy (domain_type);
1117 TYPE_CODE (result_type) = TYPE_CODE_SET;
1118 TYPE_NFIELDS (result_type) = 1;
1119 TYPE_FIELDS (result_type) = TYPE_ZALLOC (result_type, sizeof (struct field));
1121 if (!TYPE_STUB (domain_type))
1123 LONGEST low_bound, high_bound, bit_length;
1125 if (get_discrete_bounds (domain_type, &low_bound, &high_bound) < 0)
1126 low_bound = high_bound = 0;
1127 bit_length = high_bound - low_bound + 1;
1128 TYPE_LENGTH (result_type)
1129 = (bit_length + TARGET_CHAR_BIT - 1) / TARGET_CHAR_BIT;
1131 TYPE_UNSIGNED (result_type) = 1;
1133 TYPE_FIELD_TYPE (result_type, 0) = domain_type;
1138 /* Convert ARRAY_TYPE to a vector type. This may modify ARRAY_TYPE
1139 and any array types nested inside it. */
1142 make_vector_type (struct type *array_type)
1144 struct type *inner_array, *elt_type;
1147 /* Find the innermost array type, in case the array is
1148 multi-dimensional. */
1149 inner_array = array_type;
1150 while (TYPE_CODE (TYPE_TARGET_TYPE (inner_array)) == TYPE_CODE_ARRAY)
1151 inner_array = TYPE_TARGET_TYPE (inner_array);
1153 elt_type = TYPE_TARGET_TYPE (inner_array);
1154 if (TYPE_CODE (elt_type) == TYPE_CODE_INT)
1156 flags = TYPE_INSTANCE_FLAGS (elt_type) | TYPE_INSTANCE_FLAG_NOTTEXT;
1157 elt_type = make_qualified_type (elt_type, flags, NULL);
1158 TYPE_TARGET_TYPE (inner_array) = elt_type;
1161 TYPE_VECTOR (array_type) = 1;
1165 init_vector_type (struct type *elt_type, int n)
1167 struct type *array_type;
1169 array_type = lookup_array_range_type (elt_type, 0, n - 1);
1170 make_vector_type (array_type);
1174 /* Smash TYPE to be a type of pointers to members of DOMAIN with type
1175 TO_TYPE. A member pointer is a wierd thing -- it amounts to a
1176 typed offset into a struct, e.g. "an int at offset 8". A MEMBER
1177 TYPE doesn't include the offset (that's the value of the MEMBER
1178 itself), but does include the structure type into which it points
1181 When "smashing" the type, we preserve the objfile that the old type
1182 pointed to, since we aren't changing where the type is actually
1186 smash_to_memberptr_type (struct type *type, struct type *domain,
1187 struct type *to_type)
1190 TYPE_TARGET_TYPE (type) = to_type;
1191 TYPE_DOMAIN_TYPE (type) = domain;
1192 /* Assume that a data member pointer is the same size as a normal
1195 = gdbarch_ptr_bit (get_type_arch (to_type)) / TARGET_CHAR_BIT;
1196 TYPE_CODE (type) = TYPE_CODE_MEMBERPTR;
1199 /* Smash TYPE to be a type of pointer to methods type TO_TYPE.
1201 When "smashing" the type, we preserve the objfile that the old type
1202 pointed to, since we aren't changing where the type is actually
1206 smash_to_methodptr_type (struct type *type, struct type *to_type)
1209 TYPE_TARGET_TYPE (type) = to_type;
1210 TYPE_DOMAIN_TYPE (type) = TYPE_DOMAIN_TYPE (to_type);
1211 TYPE_LENGTH (type) = cplus_method_ptr_size (to_type);
1212 TYPE_CODE (type) = TYPE_CODE_METHODPTR;
1215 /* Smash TYPE to be a type of method of DOMAIN with type TO_TYPE.
1216 METHOD just means `function that gets an extra "this" argument'.
1218 When "smashing" the type, we preserve the objfile that the old type
1219 pointed to, since we aren't changing where the type is actually
1223 smash_to_method_type (struct type *type, struct type *domain,
1224 struct type *to_type, struct field *args,
1225 int nargs, int varargs)
1228 TYPE_TARGET_TYPE (type) = to_type;
1229 TYPE_DOMAIN_TYPE (type) = domain;
1230 TYPE_FIELDS (type) = args;
1231 TYPE_NFIELDS (type) = nargs;
1233 TYPE_VARARGS (type) = 1;
1234 TYPE_LENGTH (type) = 1; /* In practice, this is never needed. */
1235 TYPE_CODE (type) = TYPE_CODE_METHOD;
1238 /* Return a typename for a struct/union/enum type without "struct ",
1239 "union ", or "enum ". If the type has a NULL name, return NULL. */
1242 type_name_no_tag (const struct type *type)
1244 if (TYPE_TAG_NAME (type) != NULL)
1245 return TYPE_TAG_NAME (type);
1247 /* Is there code which expects this to return the name if there is
1248 no tag name? My guess is that this is mainly used for C++ in
1249 cases where the two will always be the same. */
1250 return TYPE_NAME (type);
1253 /* A wrapper of type_name_no_tag which calls error if the type is anonymous.
1254 Since GCC PR debug/47510 DWARF provides associated information to detect the
1255 anonymous class linkage name from its typedef.
1257 Parameter TYPE should not yet have CHECK_TYPEDEF applied, this function will
1261 type_name_no_tag_or_error (struct type *type)
1263 struct type *saved_type = type;
1265 struct objfile *objfile;
1267 CHECK_TYPEDEF (type);
1269 name = type_name_no_tag (type);
1273 name = type_name_no_tag (saved_type);
1274 objfile = TYPE_OBJFILE (saved_type);
1275 error (_("Invalid anonymous type %s [in module %s], GCC PR debug/47510 bug?"),
1276 name ? name : "<anonymous>",
1277 objfile ? objfile_name (objfile) : "<arch>");
1280 /* Lookup a typedef or primitive type named NAME, visible in lexical
1281 block BLOCK. If NOERR is nonzero, return zero if NAME is not
1282 suitably defined. */
1285 lookup_typename (const struct language_defn *language,
1286 struct gdbarch *gdbarch, const char *name,
1287 const struct block *block, int noerr)
1292 sym = lookup_symbol (name, block, VAR_DOMAIN, 0);
1293 if (sym != NULL && SYMBOL_CLASS (sym) == LOC_TYPEDEF)
1294 return SYMBOL_TYPE (sym);
1296 type = language_lookup_primitive_type_by_name (language, gdbarch, name);
1302 error (_("No type named %s."), name);
1306 lookup_unsigned_typename (const struct language_defn *language,
1307 struct gdbarch *gdbarch, const char *name)
1309 char *uns = alloca (strlen (name) + 10);
1311 strcpy (uns, "unsigned ");
1312 strcpy (uns + 9, name);
1313 return lookup_typename (language, gdbarch, uns, (struct block *) NULL, 0);
1317 lookup_signed_typename (const struct language_defn *language,
1318 struct gdbarch *gdbarch, const char *name)
1321 char *uns = alloca (strlen (name) + 8);
1323 strcpy (uns, "signed ");
1324 strcpy (uns + 7, name);
1325 t = lookup_typename (language, gdbarch, uns, (struct block *) NULL, 1);
1326 /* If we don't find "signed FOO" just try again with plain "FOO". */
1329 return lookup_typename (language, gdbarch, name, (struct block *) NULL, 0);
1332 /* Lookup a structure type named "struct NAME",
1333 visible in lexical block BLOCK. */
1336 lookup_struct (const char *name, const struct block *block)
1340 sym = lookup_symbol (name, block, STRUCT_DOMAIN, 0);
1344 error (_("No struct type named %s."), name);
1346 if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_STRUCT)
1348 error (_("This context has class, union or enum %s, not a struct."),
1351 return (SYMBOL_TYPE (sym));
1354 /* Lookup a union type named "union NAME",
1355 visible in lexical block BLOCK. */
1358 lookup_union (const char *name, const struct block *block)
1363 sym = lookup_symbol (name, block, STRUCT_DOMAIN, 0);
1366 error (_("No union type named %s."), name);
1368 t = SYMBOL_TYPE (sym);
1370 if (TYPE_CODE (t) == TYPE_CODE_UNION)
1373 /* If we get here, it's not a union. */
1374 error (_("This context has class, struct or enum %s, not a union."),
1378 /* Lookup an enum type named "enum NAME",
1379 visible in lexical block BLOCK. */
1382 lookup_enum (const char *name, const struct block *block)
1386 sym = lookup_symbol (name, block, STRUCT_DOMAIN, 0);
1389 error (_("No enum type named %s."), name);
1391 if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_ENUM)
1393 error (_("This context has class, struct or union %s, not an enum."),
1396 return (SYMBOL_TYPE (sym));
1399 /* Lookup a template type named "template NAME<TYPE>",
1400 visible in lexical block BLOCK. */
1403 lookup_template_type (char *name, struct type *type,
1404 const struct block *block)
1407 char *nam = (char *)
1408 alloca (strlen (name) + strlen (TYPE_NAME (type)) + 4);
1412 strcat (nam, TYPE_NAME (type));
1413 strcat (nam, " >"); /* FIXME, extra space still introduced in gcc? */
1415 sym = lookup_symbol (nam, block, VAR_DOMAIN, 0);
1419 error (_("No template type named %s."), name);
1421 if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_STRUCT)
1423 error (_("This context has class, union or enum %s, not a struct."),
1426 return (SYMBOL_TYPE (sym));
1429 /* Given a type TYPE, lookup the type of the component of type named
1432 TYPE can be either a struct or union, or a pointer or reference to
1433 a struct or union. If it is a pointer or reference, its target
1434 type is automatically used. Thus '.' and '->' are interchangable,
1435 as specified for the definitions of the expression element types
1436 STRUCTOP_STRUCT and STRUCTOP_PTR.
1438 If NOERR is nonzero, return zero if NAME is not suitably defined.
1439 If NAME is the name of a baseclass type, return that type. */
1442 lookup_struct_elt_type (struct type *type, const char *name, int noerr)
1449 CHECK_TYPEDEF (type);
1450 if (TYPE_CODE (type) != TYPE_CODE_PTR
1451 && TYPE_CODE (type) != TYPE_CODE_REF)
1453 type = TYPE_TARGET_TYPE (type);
1456 if (TYPE_CODE (type) != TYPE_CODE_STRUCT
1457 && TYPE_CODE (type) != TYPE_CODE_UNION)
1459 typename = type_to_string (type);
1460 make_cleanup (xfree, typename);
1461 error (_("Type %s is not a structure or union type."), typename);
1465 /* FIXME: This change put in by Michael seems incorrect for the case
1466 where the structure tag name is the same as the member name.
1467 I.e. when doing "ptype bell->bar" for "struct foo { int bar; int
1468 foo; } bell;" Disabled by fnf. */
1472 typename = type_name_no_tag (type);
1473 if (typename != NULL && strcmp (typename, name) == 0)
1478 for (i = TYPE_NFIELDS (type) - 1; i >= TYPE_N_BASECLASSES (type); i--)
1480 const char *t_field_name = TYPE_FIELD_NAME (type, i);
1482 if (t_field_name && (strcmp_iw (t_field_name, name) == 0))
1484 return TYPE_FIELD_TYPE (type, i);
1486 else if (!t_field_name || *t_field_name == '\0')
1488 struct type *subtype
1489 = lookup_struct_elt_type (TYPE_FIELD_TYPE (type, i), name, 1);
1491 if (subtype != NULL)
1496 /* OK, it's not in this class. Recursively check the baseclasses. */
1497 for (i = TYPE_N_BASECLASSES (type) - 1; i >= 0; i--)
1501 t = lookup_struct_elt_type (TYPE_BASECLASS (type, i), name, 1);
1513 typename = type_to_string (type);
1514 make_cleanup (xfree, typename);
1515 error (_("Type %s has no component named %s."), typename, name);
1518 /* Store in *MAX the largest number representable by unsigned integer type
1522 get_unsigned_type_max (struct type *type, ULONGEST *max)
1526 CHECK_TYPEDEF (type);
1527 gdb_assert (TYPE_CODE (type) == TYPE_CODE_INT && TYPE_UNSIGNED (type));
1528 gdb_assert (TYPE_LENGTH (type) <= sizeof (ULONGEST));
1530 /* Written this way to avoid overflow. */
1531 n = TYPE_LENGTH (type) * TARGET_CHAR_BIT;
1532 *max = ((((ULONGEST) 1 << (n - 1)) - 1) << 1) | 1;
1535 /* Store in *MIN, *MAX the smallest and largest numbers representable by
1536 signed integer type TYPE. */
1539 get_signed_type_minmax (struct type *type, LONGEST *min, LONGEST *max)
1543 CHECK_TYPEDEF (type);
1544 gdb_assert (TYPE_CODE (type) == TYPE_CODE_INT && !TYPE_UNSIGNED (type));
1545 gdb_assert (TYPE_LENGTH (type) <= sizeof (LONGEST));
1547 n = TYPE_LENGTH (type) * TARGET_CHAR_BIT;
1548 *min = -((ULONGEST) 1 << (n - 1));
1549 *max = ((ULONGEST) 1 << (n - 1)) - 1;
1552 /* Lookup the vptr basetype/fieldno values for TYPE.
1553 If found store vptr_basetype in *BASETYPEP if non-NULL, and return
1554 vptr_fieldno. Also, if found and basetype is from the same objfile,
1556 If not found, return -1 and ignore BASETYPEP.
1557 Callers should be aware that in some cases (for example,
1558 the type or one of its baseclasses is a stub type and we are
1559 debugging a .o file, or the compiler uses DWARF-2 and is not GCC),
1560 this function will not be able to find the
1561 virtual function table pointer, and vptr_fieldno will remain -1 and
1562 vptr_basetype will remain NULL or incomplete. */
1565 get_vptr_fieldno (struct type *type, struct type **basetypep)
1567 CHECK_TYPEDEF (type);
1569 if (TYPE_VPTR_FIELDNO (type) < 0)
1573 /* We must start at zero in case the first (and only) baseclass
1574 is virtual (and hence we cannot share the table pointer). */
1575 for (i = 0; i < TYPE_N_BASECLASSES (type); i++)
1577 struct type *baseclass = check_typedef (TYPE_BASECLASS (type, i));
1579 struct type *basetype;
1581 fieldno = get_vptr_fieldno (baseclass, &basetype);
1584 /* If the type comes from a different objfile we can't cache
1585 it, it may have a different lifetime. PR 2384 */
1586 if (TYPE_OBJFILE (type) == TYPE_OBJFILE (basetype))
1588 TYPE_VPTR_FIELDNO (type) = fieldno;
1589 TYPE_VPTR_BASETYPE (type) = basetype;
1592 *basetypep = basetype;
1603 *basetypep = TYPE_VPTR_BASETYPE (type);
1604 return TYPE_VPTR_FIELDNO (type);
1609 stub_noname_complaint (void)
1611 complaint (&symfile_complaints, _("stub type has NULL name"));
1614 /* See gdbtypes.h. */
1617 is_dynamic_type (struct type *type)
1619 type = check_typedef (type);
1621 if (TYPE_CODE (type) == TYPE_CODE_REF)
1622 type = check_typedef (TYPE_TARGET_TYPE (type));
1624 switch (TYPE_CODE (type))
1626 case TYPE_CODE_ARRAY:
1628 const struct type *range_type;
1630 gdb_assert (TYPE_NFIELDS (type) == 1);
1631 range_type = TYPE_INDEX_TYPE (type);
1632 if (!has_static_range (TYPE_RANGE_DATA (range_type)))
1635 return is_dynamic_type (TYPE_TARGET_TYPE (type));
1644 /* Resolves dynamic bound values of an array type TYPE to static ones.
1645 ADDRESS might be needed to resolve the subrange bounds, it is the location
1646 of the associated array. */
1648 static struct type *
1649 resolve_dynamic_bounds (struct type *type, CORE_ADDR addr)
1652 struct type *elt_type;
1653 struct type *range_type;
1654 struct type *ary_dim;
1655 const struct dynamic_prop *prop;
1656 const struct dwarf2_locexpr_baton *baton;
1657 struct dynamic_prop low_bound, high_bound;
1659 if (TYPE_CODE (type) == TYPE_CODE_TYPEDEF)
1661 struct type *copy = copy_type (type);
1663 TYPE_TARGET_TYPE (copy)
1664 = resolve_dynamic_bounds (TYPE_TARGET_TYPE (type), addr);
1669 if (TYPE_CODE (type) == TYPE_CODE_REF)
1671 struct type *copy = copy_type (type);
1672 CORE_ADDR target_addr = read_memory_typed_address (addr, type);
1674 TYPE_TARGET_TYPE (copy)
1675 = resolve_dynamic_bounds (TYPE_TARGET_TYPE (type), target_addr);
1679 gdb_assert (TYPE_CODE (type) == TYPE_CODE_ARRAY);
1682 range_type = check_typedef (TYPE_INDEX_TYPE (elt_type));
1684 prop = &TYPE_RANGE_DATA (range_type)->low;
1685 if (dwarf2_evaluate_property (prop, addr, &value))
1687 low_bound.kind = PROP_CONST;
1688 low_bound.data.const_val = value;
1692 low_bound.kind = PROP_UNDEFINED;
1693 low_bound.data.const_val = 0;
1696 prop = &TYPE_RANGE_DATA (range_type)->high;
1697 if (dwarf2_evaluate_property (prop, addr, &value))
1699 high_bound.kind = PROP_CONST;
1700 high_bound.data.const_val = value;
1702 if (TYPE_RANGE_DATA (range_type)->flag_upper_bound_is_count)
1703 high_bound.data.const_val
1704 = low_bound.data.const_val + high_bound.data.const_val - 1;
1708 high_bound.kind = PROP_UNDEFINED;
1709 high_bound.data.const_val = 0;
1712 ary_dim = check_typedef (TYPE_TARGET_TYPE (elt_type));
1714 if (ary_dim != NULL && TYPE_CODE (ary_dim) == TYPE_CODE_ARRAY)
1715 elt_type = resolve_dynamic_bounds (TYPE_TARGET_TYPE (type), addr);
1717 elt_type = TYPE_TARGET_TYPE (type);
1719 range_type = create_range_type (NULL,
1720 TYPE_TARGET_TYPE (range_type),
1721 &low_bound, &high_bound);
1722 return create_array_type (copy_type (type),
1727 /* See gdbtypes.h */
1730 resolve_dynamic_type (struct type *type, CORE_ADDR addr)
1732 struct type *real_type = check_typedef (type);
1733 struct type *resolved_type;
1735 if (!is_dynamic_type (real_type))
1738 resolved_type = resolve_dynamic_bounds (type, addr);
1740 return resolved_type;
1743 /* Find the real type of TYPE. This function returns the real type,
1744 after removing all layers of typedefs, and completing opaque or stub
1745 types. Completion changes the TYPE argument, but stripping of
1748 Instance flags (e.g. const/volatile) are preserved as typedefs are
1749 stripped. If necessary a new qualified form of the underlying type
1752 NOTE: This will return a typedef if TYPE_TARGET_TYPE for the typedef has
1753 not been computed and we're either in the middle of reading symbols, or
1754 there was no name for the typedef in the debug info.
1756 NOTE: Lookup of opaque types can throw errors for invalid symbol files.
1757 QUITs in the symbol reading code can also throw.
1758 Thus this function can throw an exception.
1760 If TYPE is a TYPE_CODE_TYPEDEF, its length is updated to the length of
1763 If this is a stubbed struct (i.e. declared as struct foo *), see if
1764 we can find a full definition in some other file. If so, copy this
1765 definition, so we can use it in future. There used to be a comment
1766 (but not any code) that if we don't find a full definition, we'd
1767 set a flag so we don't spend time in the future checking the same
1768 type. That would be a mistake, though--we might load in more
1769 symbols which contain a full definition for the type. */
1772 check_typedef (struct type *type)
1774 struct type *orig_type = type;
1775 /* While we're removing typedefs, we don't want to lose qualifiers.
1776 E.g., const/volatile. */
1777 int instance_flags = TYPE_INSTANCE_FLAGS (type);
1781 while (TYPE_CODE (type) == TYPE_CODE_TYPEDEF)
1783 if (!TYPE_TARGET_TYPE (type))
1788 /* It is dangerous to call lookup_symbol if we are currently
1789 reading a symtab. Infinite recursion is one danger. */
1790 if (currently_reading_symtab)
1791 return make_qualified_type (type, instance_flags, NULL);
1793 name = type_name_no_tag (type);
1794 /* FIXME: shouldn't we separately check the TYPE_NAME and
1795 the TYPE_TAG_NAME, and look in STRUCT_DOMAIN and/or
1796 VAR_DOMAIN as appropriate? (this code was written before
1797 TYPE_NAME and TYPE_TAG_NAME were separate). */
1800 stub_noname_complaint ();
1801 return make_qualified_type (type, instance_flags, NULL);
1803 sym = lookup_symbol (name, 0, STRUCT_DOMAIN, 0);
1805 TYPE_TARGET_TYPE (type) = SYMBOL_TYPE (sym);
1806 else /* TYPE_CODE_UNDEF */
1807 TYPE_TARGET_TYPE (type) = alloc_type_arch (get_type_arch (type));
1809 type = TYPE_TARGET_TYPE (type);
1811 /* Preserve the instance flags as we traverse down the typedef chain.
1813 Handling address spaces/classes is nasty, what do we do if there's a
1815 E.g., what if an outer typedef marks the type as class_1 and an inner
1816 typedef marks the type as class_2?
1817 This is the wrong place to do such error checking. We leave it to
1818 the code that created the typedef in the first place to flag the
1819 error. We just pick the outer address space (akin to letting the
1820 outer cast in a chain of casting win), instead of assuming
1821 "it can't happen". */
1823 const int ALL_SPACES = (TYPE_INSTANCE_FLAG_CODE_SPACE
1824 | TYPE_INSTANCE_FLAG_DATA_SPACE);
1825 const int ALL_CLASSES = TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL;
1826 int new_instance_flags = TYPE_INSTANCE_FLAGS (type);
1828 /* Treat code vs data spaces and address classes separately. */
1829 if ((instance_flags & ALL_SPACES) != 0)
1830 new_instance_flags &= ~ALL_SPACES;
1831 if ((instance_flags & ALL_CLASSES) != 0)
1832 new_instance_flags &= ~ALL_CLASSES;
1834 instance_flags |= new_instance_flags;
1838 /* If this is a struct/class/union with no fields, then check
1839 whether a full definition exists somewhere else. This is for
1840 systems where a type definition with no fields is issued for such
1841 types, instead of identifying them as stub types in the first
1844 if (TYPE_IS_OPAQUE (type)
1845 && opaque_type_resolution
1846 && !currently_reading_symtab)
1848 const char *name = type_name_no_tag (type);
1849 struct type *newtype;
1853 stub_noname_complaint ();
1854 return make_qualified_type (type, instance_flags, NULL);
1856 newtype = lookup_transparent_type (name);
1860 /* If the resolved type and the stub are in the same
1861 objfile, then replace the stub type with the real deal.
1862 But if they're in separate objfiles, leave the stub
1863 alone; we'll just look up the transparent type every time
1864 we call check_typedef. We can't create pointers between
1865 types allocated to different objfiles, since they may
1866 have different lifetimes. Trying to copy NEWTYPE over to
1867 TYPE's objfile is pointless, too, since you'll have to
1868 move over any other types NEWTYPE refers to, which could
1869 be an unbounded amount of stuff. */
1870 if (TYPE_OBJFILE (newtype) == TYPE_OBJFILE (type))
1871 type = make_qualified_type (newtype,
1872 TYPE_INSTANCE_FLAGS (type),
1878 /* Otherwise, rely on the stub flag being set for opaque/stubbed
1880 else if (TYPE_STUB (type) && !currently_reading_symtab)
1882 const char *name = type_name_no_tag (type);
1883 /* FIXME: shouldn't we separately check the TYPE_NAME and the
1884 TYPE_TAG_NAME, and look in STRUCT_DOMAIN and/or VAR_DOMAIN
1885 as appropriate? (this code was written before TYPE_NAME and
1886 TYPE_TAG_NAME were separate). */
1891 stub_noname_complaint ();
1892 return make_qualified_type (type, instance_flags, NULL);
1894 sym = lookup_symbol (name, 0, STRUCT_DOMAIN, 0);
1897 /* Same as above for opaque types, we can replace the stub
1898 with the complete type only if they are in the same
1900 if (TYPE_OBJFILE (SYMBOL_TYPE(sym)) == TYPE_OBJFILE (type))
1901 type = make_qualified_type (SYMBOL_TYPE (sym),
1902 TYPE_INSTANCE_FLAGS (type),
1905 type = SYMBOL_TYPE (sym);
1909 if (TYPE_TARGET_STUB (type))
1911 struct type *range_type;
1912 struct type *target_type = check_typedef (TYPE_TARGET_TYPE (type));
1914 if (TYPE_STUB (target_type) || TYPE_TARGET_STUB (target_type))
1916 /* Nothing we can do. */
1918 else if (TYPE_CODE (type) == TYPE_CODE_RANGE)
1920 TYPE_LENGTH (type) = TYPE_LENGTH (target_type);
1921 TYPE_TARGET_STUB (type) = 0;
1925 type = make_qualified_type (type, instance_flags, NULL);
1927 /* Cache TYPE_LENGTH for future use. */
1928 TYPE_LENGTH (orig_type) = TYPE_LENGTH (type);
1933 /* Parse a type expression in the string [P..P+LENGTH). If an error
1934 occurs, silently return a void type. */
1936 static struct type *
1937 safe_parse_type (struct gdbarch *gdbarch, char *p, int length)
1939 struct ui_file *saved_gdb_stderr;
1940 struct type *type = NULL; /* Initialize to keep gcc happy. */
1941 volatile struct gdb_exception except;
1943 /* Suppress error messages. */
1944 saved_gdb_stderr = gdb_stderr;
1945 gdb_stderr = ui_file_new ();
1947 /* Call parse_and_eval_type() without fear of longjmp()s. */
1948 TRY_CATCH (except, RETURN_MASK_ERROR)
1950 type = parse_and_eval_type (p, length);
1953 if (except.reason < 0)
1954 type = builtin_type (gdbarch)->builtin_void;
1956 /* Stop suppressing error messages. */
1957 ui_file_delete (gdb_stderr);
1958 gdb_stderr = saved_gdb_stderr;
1963 /* Ugly hack to convert method stubs into method types.
1965 He ain't kiddin'. This demangles the name of the method into a
1966 string including argument types, parses out each argument type,
1967 generates a string casting a zero to that type, evaluates the
1968 string, and stuffs the resulting type into an argtype vector!!!
1969 Then it knows the type of the whole function (including argument
1970 types for overloading), which info used to be in the stab's but was
1971 removed to hack back the space required for them. */
1974 check_stub_method (struct type *type, int method_id, int signature_id)
1976 struct gdbarch *gdbarch = get_type_arch (type);
1978 char *mangled_name = gdb_mangle_name (type, method_id, signature_id);
1979 char *demangled_name = gdb_demangle (mangled_name,
1980 DMGL_PARAMS | DMGL_ANSI);
1981 char *argtypetext, *p;
1982 int depth = 0, argcount = 1;
1983 struct field *argtypes;
1986 /* Make sure we got back a function string that we can use. */
1988 p = strchr (demangled_name, '(');
1992 if (demangled_name == NULL || p == NULL)
1993 error (_("Internal: Cannot demangle mangled name `%s'."),
1996 /* Now, read in the parameters that define this type. */
2001 if (*p == '(' || *p == '<')
2005 else if (*p == ')' || *p == '>')
2009 else if (*p == ',' && depth == 0)
2017 /* If we read one argument and it was ``void'', don't count it. */
2018 if (strncmp (argtypetext, "(void)", 6) == 0)
2021 /* We need one extra slot, for the THIS pointer. */
2023 argtypes = (struct field *)
2024 TYPE_ALLOC (type, (argcount + 1) * sizeof (struct field));
2027 /* Add THIS pointer for non-static methods. */
2028 f = TYPE_FN_FIELDLIST1 (type, method_id);
2029 if (TYPE_FN_FIELD_STATIC_P (f, signature_id))
2033 argtypes[0].type = lookup_pointer_type (type);
2037 if (*p != ')') /* () means no args, skip while. */
2042 if (depth <= 0 && (*p == ',' || *p == ')'))
2044 /* Avoid parsing of ellipsis, they will be handled below.
2045 Also avoid ``void'' as above. */
2046 if (strncmp (argtypetext, "...", p - argtypetext) != 0
2047 && strncmp (argtypetext, "void", p - argtypetext) != 0)
2049 argtypes[argcount].type =
2050 safe_parse_type (gdbarch, argtypetext, p - argtypetext);
2053 argtypetext = p + 1;
2056 if (*p == '(' || *p == '<')
2060 else if (*p == ')' || *p == '>')
2069 TYPE_FN_FIELD_PHYSNAME (f, signature_id) = mangled_name;
2071 /* Now update the old "stub" type into a real type. */
2072 mtype = TYPE_FN_FIELD_TYPE (f, signature_id);
2073 TYPE_DOMAIN_TYPE (mtype) = type;
2074 TYPE_FIELDS (mtype) = argtypes;
2075 TYPE_NFIELDS (mtype) = argcount;
2076 TYPE_STUB (mtype) = 0;
2077 TYPE_FN_FIELD_STUB (f, signature_id) = 0;
2079 TYPE_VARARGS (mtype) = 1;
2081 xfree (demangled_name);
2084 /* This is the external interface to check_stub_method, above. This
2085 function unstubs all of the signatures for TYPE's METHOD_ID method
2086 name. After calling this function TYPE_FN_FIELD_STUB will be
2087 cleared for each signature and TYPE_FN_FIELDLIST_NAME will be
2090 This function unfortunately can not die until stabs do. */
2093 check_stub_method_group (struct type *type, int method_id)
2095 int len = TYPE_FN_FIELDLIST_LENGTH (type, method_id);
2096 struct fn_field *f = TYPE_FN_FIELDLIST1 (type, method_id);
2097 int j, found_stub = 0;
2099 for (j = 0; j < len; j++)
2100 if (TYPE_FN_FIELD_STUB (f, j))
2103 check_stub_method (type, method_id, j);
2106 /* GNU v3 methods with incorrect names were corrected when we read
2107 in type information, because it was cheaper to do it then. The
2108 only GNU v2 methods with incorrect method names are operators and
2109 destructors; destructors were also corrected when we read in type
2112 Therefore the only thing we need to handle here are v2 operator
2114 if (found_stub && strncmp (TYPE_FN_FIELD_PHYSNAME (f, 0), "_Z", 2) != 0)
2117 char dem_opname[256];
2119 ret = cplus_demangle_opname (TYPE_FN_FIELDLIST_NAME (type,
2121 dem_opname, DMGL_ANSI);
2123 ret = cplus_demangle_opname (TYPE_FN_FIELDLIST_NAME (type,
2127 TYPE_FN_FIELDLIST_NAME (type, method_id) = xstrdup (dem_opname);
2131 /* Ensure it is in .rodata (if available) by workarounding GCC PR 44690. */
2132 const struct cplus_struct_type cplus_struct_default = { };
2135 allocate_cplus_struct_type (struct type *type)
2137 if (HAVE_CPLUS_STRUCT (type))
2138 /* Structure was already allocated. Nothing more to do. */
2141 TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_CPLUS_STUFF;
2142 TYPE_RAW_CPLUS_SPECIFIC (type) = (struct cplus_struct_type *)
2143 TYPE_ALLOC (type, sizeof (struct cplus_struct_type));
2144 *(TYPE_RAW_CPLUS_SPECIFIC (type)) = cplus_struct_default;
2147 const struct gnat_aux_type gnat_aux_default =
2150 /* Set the TYPE's type-specific kind to TYPE_SPECIFIC_GNAT_STUFF,
2151 and allocate the associated gnat-specific data. The gnat-specific
2152 data is also initialized to gnat_aux_default. */
2155 allocate_gnat_aux_type (struct type *type)
2157 TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_GNAT_STUFF;
2158 TYPE_GNAT_SPECIFIC (type) = (struct gnat_aux_type *)
2159 TYPE_ALLOC (type, sizeof (struct gnat_aux_type));
2160 *(TYPE_GNAT_SPECIFIC (type)) = gnat_aux_default;
2163 /* Helper function to initialize the standard scalar types.
2165 If NAME is non-NULL, then it is used to initialize the type name.
2166 Note that NAME is not copied; it is required to have a lifetime at
2167 least as long as OBJFILE. */
2170 init_type (enum type_code code, int length, int flags,
2171 const char *name, struct objfile *objfile)
2175 type = alloc_type (objfile);
2176 TYPE_CODE (type) = code;
2177 TYPE_LENGTH (type) = length;
2179 gdb_assert (!(flags & (TYPE_FLAG_MIN - 1)));
2180 if (flags & TYPE_FLAG_UNSIGNED)
2181 TYPE_UNSIGNED (type) = 1;
2182 if (flags & TYPE_FLAG_NOSIGN)
2183 TYPE_NOSIGN (type) = 1;
2184 if (flags & TYPE_FLAG_STUB)
2185 TYPE_STUB (type) = 1;
2186 if (flags & TYPE_FLAG_TARGET_STUB)
2187 TYPE_TARGET_STUB (type) = 1;
2188 if (flags & TYPE_FLAG_STATIC)
2189 TYPE_STATIC (type) = 1;
2190 if (flags & TYPE_FLAG_PROTOTYPED)
2191 TYPE_PROTOTYPED (type) = 1;
2192 if (flags & TYPE_FLAG_INCOMPLETE)
2193 TYPE_INCOMPLETE (type) = 1;
2194 if (flags & TYPE_FLAG_VARARGS)
2195 TYPE_VARARGS (type) = 1;
2196 if (flags & TYPE_FLAG_VECTOR)
2197 TYPE_VECTOR (type) = 1;
2198 if (flags & TYPE_FLAG_STUB_SUPPORTED)
2199 TYPE_STUB_SUPPORTED (type) = 1;
2200 if (flags & TYPE_FLAG_FIXED_INSTANCE)
2201 TYPE_FIXED_INSTANCE (type) = 1;
2202 if (flags & TYPE_FLAG_GNU_IFUNC)
2203 TYPE_GNU_IFUNC (type) = 1;
2205 TYPE_NAME (type) = name;
2209 if (name && strcmp (name, "char") == 0)
2210 TYPE_NOSIGN (type) = 1;
2214 case TYPE_CODE_STRUCT:
2215 case TYPE_CODE_UNION:
2216 case TYPE_CODE_NAMESPACE:
2217 INIT_CPLUS_SPECIFIC (type);
2220 TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_FLOATFORMAT;
2222 case TYPE_CODE_FUNC:
2223 INIT_FUNC_SPECIFIC (type);
2229 /* Queries on types. */
2232 can_dereference (struct type *t)
2234 /* FIXME: Should we return true for references as well as
2239 && TYPE_CODE (t) == TYPE_CODE_PTR
2240 && TYPE_CODE (TYPE_TARGET_TYPE (t)) != TYPE_CODE_VOID);
2244 is_integral_type (struct type *t)
2249 && ((TYPE_CODE (t) == TYPE_CODE_INT)
2250 || (TYPE_CODE (t) == TYPE_CODE_ENUM)
2251 || (TYPE_CODE (t) == TYPE_CODE_FLAGS)
2252 || (TYPE_CODE (t) == TYPE_CODE_CHAR)
2253 || (TYPE_CODE (t) == TYPE_CODE_RANGE)
2254 || (TYPE_CODE (t) == TYPE_CODE_BOOL)));
2257 /* Return true if TYPE is scalar. */
2260 is_scalar_type (struct type *type)
2262 CHECK_TYPEDEF (type);
2264 switch (TYPE_CODE (type))
2266 case TYPE_CODE_ARRAY:
2267 case TYPE_CODE_STRUCT:
2268 case TYPE_CODE_UNION:
2270 case TYPE_CODE_STRING:
2277 /* Return true if T is scalar, or a composite type which in practice has
2278 the memory layout of a scalar type. E.g., an array or struct with only
2279 one scalar element inside it, or a union with only scalar elements. */
2282 is_scalar_type_recursive (struct type *t)
2286 if (is_scalar_type (t))
2288 /* Are we dealing with an array or string of known dimensions? */
2289 else if ((TYPE_CODE (t) == TYPE_CODE_ARRAY
2290 || TYPE_CODE (t) == TYPE_CODE_STRING) && TYPE_NFIELDS (t) == 1
2291 && TYPE_CODE (TYPE_INDEX_TYPE (t)) == TYPE_CODE_RANGE)
2293 LONGEST low_bound, high_bound;
2294 struct type *elt_type = check_typedef (TYPE_TARGET_TYPE (t));
2296 get_discrete_bounds (TYPE_INDEX_TYPE (t), &low_bound, &high_bound);
2298 return high_bound == low_bound && is_scalar_type_recursive (elt_type);
2300 /* Are we dealing with a struct with one element? */
2301 else if (TYPE_CODE (t) == TYPE_CODE_STRUCT && TYPE_NFIELDS (t) == 1)
2302 return is_scalar_type_recursive (TYPE_FIELD_TYPE (t, 0));
2303 else if (TYPE_CODE (t) == TYPE_CODE_UNION)
2305 int i, n = TYPE_NFIELDS (t);
2307 /* If all elements of the union are scalar, then the union is scalar. */
2308 for (i = 0; i < n; i++)
2309 if (!is_scalar_type_recursive (TYPE_FIELD_TYPE (t, i)))
2318 /* A helper function which returns true if types A and B represent the
2319 "same" class type. This is true if the types have the same main
2320 type, or the same name. */
2323 class_types_same_p (const struct type *a, const struct type *b)
2325 return (TYPE_MAIN_TYPE (a) == TYPE_MAIN_TYPE (b)
2326 || (TYPE_NAME (a) && TYPE_NAME (b)
2327 && !strcmp (TYPE_NAME (a), TYPE_NAME (b))));
2330 /* If BASE is an ancestor of DCLASS return the distance between them.
2331 otherwise return -1;
2335 class B: public A {};
2336 class C: public B {};
2339 distance_to_ancestor (A, A, 0) = 0
2340 distance_to_ancestor (A, B, 0) = 1
2341 distance_to_ancestor (A, C, 0) = 2
2342 distance_to_ancestor (A, D, 0) = 3
2344 If PUBLIC is 1 then only public ancestors are considered,
2345 and the function returns the distance only if BASE is a public ancestor
2349 distance_to_ancestor (A, D, 1) = -1. */
2352 distance_to_ancestor (struct type *base, struct type *dclass, int public)
2357 CHECK_TYPEDEF (base);
2358 CHECK_TYPEDEF (dclass);
2360 if (class_types_same_p (base, dclass))
2363 for (i = 0; i < TYPE_N_BASECLASSES (dclass); i++)
2365 if (public && ! BASETYPE_VIA_PUBLIC (dclass, i))
2368 d = distance_to_ancestor (base, TYPE_BASECLASS (dclass, i), public);
2376 /* Check whether BASE is an ancestor or base class or DCLASS
2377 Return 1 if so, and 0 if not.
2378 Note: If BASE and DCLASS are of the same type, this function
2379 will return 1. So for some class A, is_ancestor (A, A) will
2383 is_ancestor (struct type *base, struct type *dclass)
2385 return distance_to_ancestor (base, dclass, 0) >= 0;
2388 /* Like is_ancestor, but only returns true when BASE is a public
2389 ancestor of DCLASS. */
2392 is_public_ancestor (struct type *base, struct type *dclass)
2394 return distance_to_ancestor (base, dclass, 1) >= 0;
2397 /* A helper function for is_unique_ancestor. */
2400 is_unique_ancestor_worker (struct type *base, struct type *dclass,
2402 const gdb_byte *valaddr, int embedded_offset,
2403 CORE_ADDR address, struct value *val)
2407 CHECK_TYPEDEF (base);
2408 CHECK_TYPEDEF (dclass);
2410 for (i = 0; i < TYPE_N_BASECLASSES (dclass) && count < 2; ++i)
2415 iter = check_typedef (TYPE_BASECLASS (dclass, i));
2417 this_offset = baseclass_offset (dclass, i, valaddr, embedded_offset,
2420 if (class_types_same_p (base, iter))
2422 /* If this is the first subclass, set *OFFSET and set count
2423 to 1. Otherwise, if this is at the same offset as
2424 previous instances, do nothing. Otherwise, increment
2428 *offset = this_offset;
2431 else if (this_offset == *offset)
2439 count += is_unique_ancestor_worker (base, iter, offset,
2441 embedded_offset + this_offset,
2448 /* Like is_ancestor, but only returns true if BASE is a unique base
2449 class of the type of VAL. */
2452 is_unique_ancestor (struct type *base, struct value *val)
2456 return is_unique_ancestor_worker (base, value_type (val), &offset,
2457 value_contents_for_printing (val),
2458 value_embedded_offset (val),
2459 value_address (val), val) == 1;
2463 /* Overload resolution. */
2465 /* Return the sum of the rank of A with the rank of B. */
2468 sum_ranks (struct rank a, struct rank b)
2471 c.rank = a.rank + b.rank;
2472 c.subrank = a.subrank + b.subrank;
2476 /* Compare rank A and B and return:
2478 1 if a is better than b
2479 -1 if b is better than a. */
2482 compare_ranks (struct rank a, struct rank b)
2484 if (a.rank == b.rank)
2486 if (a.subrank == b.subrank)
2488 if (a.subrank < b.subrank)
2490 if (a.subrank > b.subrank)
2494 if (a.rank < b.rank)
2497 /* a.rank > b.rank */
2501 /* Functions for overload resolution begin here. */
2503 /* Compare two badness vectors A and B and return the result.
2504 0 => A and B are identical
2505 1 => A and B are incomparable
2506 2 => A is better than B
2507 3 => A is worse than B */
2510 compare_badness (struct badness_vector *a, struct badness_vector *b)
2514 short found_pos = 0; /* any positives in c? */
2515 short found_neg = 0; /* any negatives in c? */
2517 /* differing lengths => incomparable */
2518 if (a->length != b->length)
2521 /* Subtract b from a */
2522 for (i = 0; i < a->length; i++)
2524 tmp = compare_ranks (b->rank[i], a->rank[i]);
2534 return 1; /* incomparable */
2536 return 3; /* A > B */
2542 return 2; /* A < B */
2544 return 0; /* A == B */
2548 /* Rank a function by comparing its parameter types (PARMS, length
2549 NPARMS), to the types of an argument list (ARGS, length NARGS).
2550 Return a pointer to a badness vector. This has NARGS + 1
2553 struct badness_vector *
2554 rank_function (struct type **parms, int nparms,
2555 struct value **args, int nargs)
2558 struct badness_vector *bv;
2559 int min_len = nparms < nargs ? nparms : nargs;
2561 bv = xmalloc (sizeof (struct badness_vector));
2562 bv->length = nargs + 1; /* add 1 for the length-match rank. */
2563 bv->rank = xmalloc ((nargs + 1) * sizeof (int));
2565 /* First compare the lengths of the supplied lists.
2566 If there is a mismatch, set it to a high value. */
2568 /* pai/1997-06-03 FIXME: when we have debug info about default
2569 arguments and ellipsis parameter lists, we should consider those
2570 and rank the length-match more finely. */
2572 LENGTH_MATCH (bv) = (nargs != nparms)
2573 ? LENGTH_MISMATCH_BADNESS
2574 : EXACT_MATCH_BADNESS;
2576 /* Now rank all the parameters of the candidate function. */
2577 for (i = 1; i <= min_len; i++)
2578 bv->rank[i] = rank_one_type (parms[i - 1], value_type (args[i - 1]),
2581 /* If more arguments than parameters, add dummy entries. */
2582 for (i = min_len + 1; i <= nargs; i++)
2583 bv->rank[i] = TOO_FEW_PARAMS_BADNESS;
2588 /* Compare the names of two integer types, assuming that any sign
2589 qualifiers have been checked already. We do it this way because
2590 there may be an "int" in the name of one of the types. */
2593 integer_types_same_name_p (const char *first, const char *second)
2595 int first_p, second_p;
2597 /* If both are shorts, return 1; if neither is a short, keep
2599 first_p = (strstr (first, "short") != NULL);
2600 second_p = (strstr (second, "short") != NULL);
2601 if (first_p && second_p)
2603 if (first_p || second_p)
2606 /* Likewise for long. */
2607 first_p = (strstr (first, "long") != NULL);
2608 second_p = (strstr (second, "long") != NULL);
2609 if (first_p && second_p)
2611 if (first_p || second_p)
2614 /* Likewise for char. */
2615 first_p = (strstr (first, "char") != NULL);
2616 second_p = (strstr (second, "char") != NULL);
2617 if (first_p && second_p)
2619 if (first_p || second_p)
2622 /* They must both be ints. */
2626 /* Compares type A to type B returns 1 if the represent the same type
2630 types_equal (struct type *a, struct type *b)
2632 /* Identical type pointers. */
2633 /* However, this still doesn't catch all cases of same type for b
2634 and a. The reason is that builtin types are different from
2635 the same ones constructed from the object. */
2639 /* Resolve typedefs */
2640 if (TYPE_CODE (a) == TYPE_CODE_TYPEDEF)
2641 a = check_typedef (a);
2642 if (TYPE_CODE (b) == TYPE_CODE_TYPEDEF)
2643 b = check_typedef (b);
2645 /* If after resolving typedefs a and b are not of the same type
2646 code then they are not equal. */
2647 if (TYPE_CODE (a) != TYPE_CODE (b))
2650 /* If a and b are both pointers types or both reference types then
2651 they are equal of the same type iff the objects they refer to are
2652 of the same type. */
2653 if (TYPE_CODE (a) == TYPE_CODE_PTR
2654 || TYPE_CODE (a) == TYPE_CODE_REF)
2655 return types_equal (TYPE_TARGET_TYPE (a),
2656 TYPE_TARGET_TYPE (b));
2658 /* Well, damnit, if the names are exactly the same, I'll say they
2659 are exactly the same. This happens when we generate method
2660 stubs. The types won't point to the same address, but they
2661 really are the same. */
2663 if (TYPE_NAME (a) && TYPE_NAME (b)
2664 && strcmp (TYPE_NAME (a), TYPE_NAME (b)) == 0)
2667 /* Check if identical after resolving typedefs. */
2671 /* Two function types are equal if their argument and return types
2673 if (TYPE_CODE (a) == TYPE_CODE_FUNC)
2677 if (TYPE_NFIELDS (a) != TYPE_NFIELDS (b))
2680 if (!types_equal (TYPE_TARGET_TYPE (a), TYPE_TARGET_TYPE (b)))
2683 for (i = 0; i < TYPE_NFIELDS (a); ++i)
2684 if (!types_equal (TYPE_FIELD_TYPE (a, i), TYPE_FIELD_TYPE (b, i)))
2693 /* Deep comparison of types. */
2695 /* An entry in the type-equality bcache. */
2697 typedef struct type_equality_entry
2699 struct type *type1, *type2;
2700 } type_equality_entry_d;
2702 DEF_VEC_O (type_equality_entry_d);
2704 /* A helper function to compare two strings. Returns 1 if they are
2705 the same, 0 otherwise. Handles NULLs properly. */
2708 compare_maybe_null_strings (const char *s, const char *t)
2710 if (s == NULL && t != NULL)
2712 else if (s != NULL && t == NULL)
2714 else if (s == NULL && t== NULL)
2716 return strcmp (s, t) == 0;
2719 /* A helper function for check_types_worklist that checks two types for
2720 "deep" equality. Returns non-zero if the types are considered the
2721 same, zero otherwise. */
2724 check_types_equal (struct type *type1, struct type *type2,
2725 VEC (type_equality_entry_d) **worklist)
2727 CHECK_TYPEDEF (type1);
2728 CHECK_TYPEDEF (type2);
2733 if (TYPE_CODE (type1) != TYPE_CODE (type2)
2734 || TYPE_LENGTH (type1) != TYPE_LENGTH (type2)
2735 || TYPE_UNSIGNED (type1) != TYPE_UNSIGNED (type2)
2736 || TYPE_NOSIGN (type1) != TYPE_NOSIGN (type2)
2737 || TYPE_VARARGS (type1) != TYPE_VARARGS (type2)
2738 || TYPE_VECTOR (type1) != TYPE_VECTOR (type2)
2739 || TYPE_NOTTEXT (type1) != TYPE_NOTTEXT (type2)
2740 || TYPE_INSTANCE_FLAGS (type1) != TYPE_INSTANCE_FLAGS (type2)
2741 || TYPE_NFIELDS (type1) != TYPE_NFIELDS (type2))
2744 if (!compare_maybe_null_strings (TYPE_TAG_NAME (type1),
2745 TYPE_TAG_NAME (type2)))
2747 if (!compare_maybe_null_strings (TYPE_NAME (type1), TYPE_NAME (type2)))
2750 if (TYPE_CODE (type1) == TYPE_CODE_RANGE)
2752 if (memcmp (TYPE_RANGE_DATA (type1), TYPE_RANGE_DATA (type2),
2753 sizeof (*TYPE_RANGE_DATA (type1))) != 0)
2760 for (i = 0; i < TYPE_NFIELDS (type1); ++i)
2762 const struct field *field1 = &TYPE_FIELD (type1, i);
2763 const struct field *field2 = &TYPE_FIELD (type2, i);
2764 struct type_equality_entry entry;
2766 if (FIELD_ARTIFICIAL (*field1) != FIELD_ARTIFICIAL (*field2)
2767 || FIELD_BITSIZE (*field1) != FIELD_BITSIZE (*field2)
2768 || FIELD_LOC_KIND (*field1) != FIELD_LOC_KIND (*field2))
2770 if (!compare_maybe_null_strings (FIELD_NAME (*field1),
2771 FIELD_NAME (*field2)))
2773 switch (FIELD_LOC_KIND (*field1))
2775 case FIELD_LOC_KIND_BITPOS:
2776 if (FIELD_BITPOS (*field1) != FIELD_BITPOS (*field2))
2779 case FIELD_LOC_KIND_ENUMVAL:
2780 if (FIELD_ENUMVAL (*field1) != FIELD_ENUMVAL (*field2))
2783 case FIELD_LOC_KIND_PHYSADDR:
2784 if (FIELD_STATIC_PHYSADDR (*field1)
2785 != FIELD_STATIC_PHYSADDR (*field2))
2788 case FIELD_LOC_KIND_PHYSNAME:
2789 if (!compare_maybe_null_strings (FIELD_STATIC_PHYSNAME (*field1),
2790 FIELD_STATIC_PHYSNAME (*field2)))
2793 case FIELD_LOC_KIND_DWARF_BLOCK:
2795 struct dwarf2_locexpr_baton *block1, *block2;
2797 block1 = FIELD_DWARF_BLOCK (*field1);
2798 block2 = FIELD_DWARF_BLOCK (*field2);
2799 if (block1->per_cu != block2->per_cu
2800 || block1->size != block2->size
2801 || memcmp (block1->data, block2->data, block1->size) != 0)
2806 internal_error (__FILE__, __LINE__, _("Unsupported field kind "
2807 "%d by check_types_equal"),
2808 FIELD_LOC_KIND (*field1));
2811 entry.type1 = FIELD_TYPE (*field1);
2812 entry.type2 = FIELD_TYPE (*field2);
2813 VEC_safe_push (type_equality_entry_d, *worklist, &entry);
2817 if (TYPE_TARGET_TYPE (type1) != NULL)
2819 struct type_equality_entry entry;
2821 if (TYPE_TARGET_TYPE (type2) == NULL)
2824 entry.type1 = TYPE_TARGET_TYPE (type1);
2825 entry.type2 = TYPE_TARGET_TYPE (type2);
2826 VEC_safe_push (type_equality_entry_d, *worklist, &entry);
2828 else if (TYPE_TARGET_TYPE (type2) != NULL)
2834 /* Check types on a worklist for equality. Returns zero if any pair
2835 is not equal, non-zero if they are all considered equal. */
2838 check_types_worklist (VEC (type_equality_entry_d) **worklist,
2839 struct bcache *cache)
2841 while (!VEC_empty (type_equality_entry_d, *worklist))
2843 struct type_equality_entry entry;
2846 entry = *VEC_last (type_equality_entry_d, *worklist);
2847 VEC_pop (type_equality_entry_d, *worklist);
2849 /* If the type pair has already been visited, we know it is
2851 bcache_full (&entry, sizeof (entry), cache, &added);
2855 if (check_types_equal (entry.type1, entry.type2, worklist) == 0)
2862 /* Return non-zero if types TYPE1 and TYPE2 are equal, as determined by a
2863 "deep comparison". Otherwise return zero. */
2866 types_deeply_equal (struct type *type1, struct type *type2)
2868 volatile struct gdb_exception except;
2870 struct bcache *cache;
2871 VEC (type_equality_entry_d) *worklist = NULL;
2872 struct type_equality_entry entry;
2874 gdb_assert (type1 != NULL && type2 != NULL);
2876 /* Early exit for the simple case. */
2880 cache = bcache_xmalloc (NULL, NULL);
2882 entry.type1 = type1;
2883 entry.type2 = type2;
2884 VEC_safe_push (type_equality_entry_d, worklist, &entry);
2886 TRY_CATCH (except, RETURN_MASK_ALL)
2888 result = check_types_worklist (&worklist, cache);
2890 /* check_types_worklist calls several nested helper functions,
2891 some of which can raise a GDB Exception, so we just check
2892 and rethrow here. If there is a GDB exception, a comparison
2893 is not capable (or trusted), so exit. */
2894 bcache_xfree (cache);
2895 VEC_free (type_equality_entry_d, worklist);
2896 /* Rethrow if there was a problem. */
2897 if (except.reason < 0)
2898 throw_exception (except);
2903 /* Compare one type (PARM) for compatibility with another (ARG).
2904 * PARM is intended to be the parameter type of a function; and
2905 * ARG is the supplied argument's type. This function tests if
2906 * the latter can be converted to the former.
2907 * VALUE is the argument's value or NULL if none (or called recursively)
2909 * Return 0 if they are identical types;
2910 * Otherwise, return an integer which corresponds to how compatible
2911 * PARM is to ARG. The higher the return value, the worse the match.
2912 * Generally the "bad" conversions are all uniformly assigned a 100. */
2915 rank_one_type (struct type *parm, struct type *arg, struct value *value)
2917 struct rank rank = {0,0};
2919 if (types_equal (parm, arg))
2920 return EXACT_MATCH_BADNESS;
2922 /* Resolve typedefs */
2923 if (TYPE_CODE (parm) == TYPE_CODE_TYPEDEF)
2924 parm = check_typedef (parm);
2925 if (TYPE_CODE (arg) == TYPE_CODE_TYPEDEF)
2926 arg = check_typedef (arg);
2928 /* See through references, since we can almost make non-references
2930 if (TYPE_CODE (arg) == TYPE_CODE_REF)
2931 return (sum_ranks (rank_one_type (parm, TYPE_TARGET_TYPE (arg), NULL),
2932 REFERENCE_CONVERSION_BADNESS));
2933 if (TYPE_CODE (parm) == TYPE_CODE_REF)
2934 return (sum_ranks (rank_one_type (TYPE_TARGET_TYPE (parm), arg, NULL),
2935 REFERENCE_CONVERSION_BADNESS));
2937 /* Debugging only. */
2938 fprintf_filtered (gdb_stderr,
2939 "------ Arg is %s [%d], parm is %s [%d]\n",
2940 TYPE_NAME (arg), TYPE_CODE (arg),
2941 TYPE_NAME (parm), TYPE_CODE (parm));
2943 /* x -> y means arg of type x being supplied for parameter of type y. */
2945 switch (TYPE_CODE (parm))
2948 switch (TYPE_CODE (arg))
2952 /* Allowed pointer conversions are:
2953 (a) pointer to void-pointer conversion. */
2954 if (TYPE_CODE (TYPE_TARGET_TYPE (parm)) == TYPE_CODE_VOID)
2955 return VOID_PTR_CONVERSION_BADNESS;
2957 /* (b) pointer to ancestor-pointer conversion. */
2958 rank.subrank = distance_to_ancestor (TYPE_TARGET_TYPE (parm),
2959 TYPE_TARGET_TYPE (arg),
2961 if (rank.subrank >= 0)
2962 return sum_ranks (BASE_PTR_CONVERSION_BADNESS, rank);
2964 return INCOMPATIBLE_TYPE_BADNESS;
2965 case TYPE_CODE_ARRAY:
2966 if (types_equal (TYPE_TARGET_TYPE (parm),
2967 TYPE_TARGET_TYPE (arg)))
2968 return EXACT_MATCH_BADNESS;
2969 return INCOMPATIBLE_TYPE_BADNESS;
2970 case TYPE_CODE_FUNC:
2971 return rank_one_type (TYPE_TARGET_TYPE (parm), arg, NULL);
2973 if (value != NULL && TYPE_CODE (value_type (value)) == TYPE_CODE_INT)
2975 if (value_as_long (value) == 0)
2977 /* Null pointer conversion: allow it to be cast to a pointer.
2978 [4.10.1 of C++ standard draft n3290] */
2979 return NULL_POINTER_CONVERSION_BADNESS;
2983 /* If type checking is disabled, allow the conversion. */
2984 if (!strict_type_checking)
2985 return NS_INTEGER_POINTER_CONVERSION_BADNESS;
2989 case TYPE_CODE_ENUM:
2990 case TYPE_CODE_FLAGS:
2991 case TYPE_CODE_CHAR:
2992 case TYPE_CODE_RANGE:
2993 case TYPE_CODE_BOOL:
2995 return INCOMPATIBLE_TYPE_BADNESS;
2997 case TYPE_CODE_ARRAY:
2998 switch (TYPE_CODE (arg))
3001 case TYPE_CODE_ARRAY:
3002 return rank_one_type (TYPE_TARGET_TYPE (parm),
3003 TYPE_TARGET_TYPE (arg), NULL);
3005 return INCOMPATIBLE_TYPE_BADNESS;
3007 case TYPE_CODE_FUNC:
3008 switch (TYPE_CODE (arg))
3010 case TYPE_CODE_PTR: /* funcptr -> func */
3011 return rank_one_type (parm, TYPE_TARGET_TYPE (arg), NULL);
3013 return INCOMPATIBLE_TYPE_BADNESS;
3016 switch (TYPE_CODE (arg))
3019 if (TYPE_LENGTH (arg) == TYPE_LENGTH (parm))
3021 /* Deal with signed, unsigned, and plain chars and
3022 signed and unsigned ints. */
3023 if (TYPE_NOSIGN (parm))
3025 /* This case only for character types. */
3026 if (TYPE_NOSIGN (arg))
3027 return EXACT_MATCH_BADNESS; /* plain char -> plain char */
3028 else /* signed/unsigned char -> plain char */
3029 return INTEGER_CONVERSION_BADNESS;
3031 else if (TYPE_UNSIGNED (parm))
3033 if (TYPE_UNSIGNED (arg))
3035 /* unsigned int -> unsigned int, or
3036 unsigned long -> unsigned long */
3037 if (integer_types_same_name_p (TYPE_NAME (parm),
3039 return EXACT_MATCH_BADNESS;
3040 else if (integer_types_same_name_p (TYPE_NAME (arg),
3042 && integer_types_same_name_p (TYPE_NAME (parm),
3044 /* unsigned int -> unsigned long */
3045 return INTEGER_PROMOTION_BADNESS;
3047 /* unsigned long -> unsigned int */
3048 return INTEGER_CONVERSION_BADNESS;
3052 if (integer_types_same_name_p (TYPE_NAME (arg),
3054 && integer_types_same_name_p (TYPE_NAME (parm),
3056 /* signed long -> unsigned int */
3057 return INTEGER_CONVERSION_BADNESS;
3059 /* signed int/long -> unsigned int/long */
3060 return INTEGER_CONVERSION_BADNESS;
3063 else if (!TYPE_NOSIGN (arg) && !TYPE_UNSIGNED (arg))
3065 if (integer_types_same_name_p (TYPE_NAME (parm),
3067 return EXACT_MATCH_BADNESS;
3068 else if (integer_types_same_name_p (TYPE_NAME (arg),
3070 && integer_types_same_name_p (TYPE_NAME (parm),
3072 return INTEGER_PROMOTION_BADNESS;
3074 return INTEGER_CONVERSION_BADNESS;
3077 return INTEGER_CONVERSION_BADNESS;
3079 else if (TYPE_LENGTH (arg) < TYPE_LENGTH (parm))
3080 return INTEGER_PROMOTION_BADNESS;
3082 return INTEGER_CONVERSION_BADNESS;
3083 case TYPE_CODE_ENUM:
3084 case TYPE_CODE_FLAGS:
3085 case TYPE_CODE_CHAR:
3086 case TYPE_CODE_RANGE:
3087 case TYPE_CODE_BOOL:
3088 return INTEGER_PROMOTION_BADNESS;
3090 return INT_FLOAT_CONVERSION_BADNESS;
3092 return NS_POINTER_CONVERSION_BADNESS;
3094 return INCOMPATIBLE_TYPE_BADNESS;
3097 case TYPE_CODE_ENUM:
3098 switch (TYPE_CODE (arg))
3101 case TYPE_CODE_CHAR:
3102 case TYPE_CODE_RANGE:
3103 case TYPE_CODE_BOOL:
3104 case TYPE_CODE_ENUM:
3105 return INTEGER_CONVERSION_BADNESS;
3107 return INT_FLOAT_CONVERSION_BADNESS;
3109 return INCOMPATIBLE_TYPE_BADNESS;
3112 case TYPE_CODE_CHAR:
3113 switch (TYPE_CODE (arg))
3115 case TYPE_CODE_RANGE:
3116 case TYPE_CODE_BOOL:
3117 case TYPE_CODE_ENUM:
3118 return INTEGER_CONVERSION_BADNESS;
3120 return INT_FLOAT_CONVERSION_BADNESS;
3122 if (TYPE_LENGTH (arg) > TYPE_LENGTH (parm))
3123 return INTEGER_CONVERSION_BADNESS;
3124 else if (TYPE_LENGTH (arg) < TYPE_LENGTH (parm))
3125 return INTEGER_PROMOTION_BADNESS;
3126 /* >>> !! else fall through !! <<< */
3127 case TYPE_CODE_CHAR:
3128 /* Deal with signed, unsigned, and plain chars for C++ and
3129 with int cases falling through from previous case. */
3130 if (TYPE_NOSIGN (parm))
3132 if (TYPE_NOSIGN (arg))
3133 return EXACT_MATCH_BADNESS;
3135 return INTEGER_CONVERSION_BADNESS;
3137 else if (TYPE_UNSIGNED (parm))
3139 if (TYPE_UNSIGNED (arg))
3140 return EXACT_MATCH_BADNESS;
3142 return INTEGER_PROMOTION_BADNESS;
3144 else if (!TYPE_NOSIGN (arg) && !TYPE_UNSIGNED (arg))
3145 return EXACT_MATCH_BADNESS;
3147 return INTEGER_CONVERSION_BADNESS;
3149 return INCOMPATIBLE_TYPE_BADNESS;
3152 case TYPE_CODE_RANGE:
3153 switch (TYPE_CODE (arg))
3156 case TYPE_CODE_CHAR:
3157 case TYPE_CODE_RANGE:
3158 case TYPE_CODE_BOOL:
3159 case TYPE_CODE_ENUM:
3160 return INTEGER_CONVERSION_BADNESS;
3162 return INT_FLOAT_CONVERSION_BADNESS;
3164 return INCOMPATIBLE_TYPE_BADNESS;
3167 case TYPE_CODE_BOOL:
3168 switch (TYPE_CODE (arg))
3170 /* n3290 draft, section 4.12.1 (conv.bool):
3172 "A prvalue of arithmetic, unscoped enumeration, pointer, or
3173 pointer to member type can be converted to a prvalue of type
3174 bool. A zero value, null pointer value, or null member pointer
3175 value is converted to false; any other value is converted to
3176 true. A prvalue of type std::nullptr_t can be converted to a
3177 prvalue of type bool; the resulting value is false." */
3179 case TYPE_CODE_CHAR:
3180 case TYPE_CODE_ENUM:
3182 case TYPE_CODE_MEMBERPTR:
3184 return BOOL_CONVERSION_BADNESS;
3185 case TYPE_CODE_RANGE:
3186 return INCOMPATIBLE_TYPE_BADNESS;
3187 case TYPE_CODE_BOOL:
3188 return EXACT_MATCH_BADNESS;
3190 return INCOMPATIBLE_TYPE_BADNESS;
3194 switch (TYPE_CODE (arg))
3197 if (TYPE_LENGTH (arg) < TYPE_LENGTH (parm))
3198 return FLOAT_PROMOTION_BADNESS;
3199 else if (TYPE_LENGTH (arg) == TYPE_LENGTH (parm))
3200 return EXACT_MATCH_BADNESS;
3202 return FLOAT_CONVERSION_BADNESS;
3204 case TYPE_CODE_BOOL:
3205 case TYPE_CODE_ENUM:
3206 case TYPE_CODE_RANGE:
3207 case TYPE_CODE_CHAR:
3208 return INT_FLOAT_CONVERSION_BADNESS;
3210 return INCOMPATIBLE_TYPE_BADNESS;
3213 case TYPE_CODE_COMPLEX:
3214 switch (TYPE_CODE (arg))
3215 { /* Strictly not needed for C++, but... */
3217 return FLOAT_PROMOTION_BADNESS;
3218 case TYPE_CODE_COMPLEX:
3219 return EXACT_MATCH_BADNESS;
3221 return INCOMPATIBLE_TYPE_BADNESS;
3224 case TYPE_CODE_STRUCT:
3225 /* currently same as TYPE_CODE_CLASS. */
3226 switch (TYPE_CODE (arg))
3228 case TYPE_CODE_STRUCT:
3229 /* Check for derivation */
3230 rank.subrank = distance_to_ancestor (parm, arg, 0);
3231 if (rank.subrank >= 0)
3232 return sum_ranks (BASE_CONVERSION_BADNESS, rank);
3233 /* else fall through */
3235 return INCOMPATIBLE_TYPE_BADNESS;
3238 case TYPE_CODE_UNION:
3239 switch (TYPE_CODE (arg))
3241 case TYPE_CODE_UNION:
3243 return INCOMPATIBLE_TYPE_BADNESS;
3246 case TYPE_CODE_MEMBERPTR:
3247 switch (TYPE_CODE (arg))
3250 return INCOMPATIBLE_TYPE_BADNESS;
3253 case TYPE_CODE_METHOD:
3254 switch (TYPE_CODE (arg))
3258 return INCOMPATIBLE_TYPE_BADNESS;
3262 switch (TYPE_CODE (arg))
3266 return INCOMPATIBLE_TYPE_BADNESS;
3271 switch (TYPE_CODE (arg))
3275 return rank_one_type (TYPE_FIELD_TYPE (parm, 0),
3276 TYPE_FIELD_TYPE (arg, 0), NULL);
3278 return INCOMPATIBLE_TYPE_BADNESS;
3281 case TYPE_CODE_VOID:
3283 return INCOMPATIBLE_TYPE_BADNESS;
3284 } /* switch (TYPE_CODE (arg)) */
3287 /* End of functions for overload resolution. */
3289 /* Routines to pretty-print types. */
3292 print_bit_vector (B_TYPE *bits, int nbits)
3296 for (bitno = 0; bitno < nbits; bitno++)
3298 if ((bitno % 8) == 0)
3300 puts_filtered (" ");
3302 if (B_TST (bits, bitno))
3303 printf_filtered (("1"));
3305 printf_filtered (("0"));
3309 /* Note the first arg should be the "this" pointer, we may not want to
3310 include it since we may get into a infinitely recursive
3314 print_arg_types (struct field *args, int nargs, int spaces)
3320 for (i = 0; i < nargs; i++)
3321 recursive_dump_type (args[i].type, spaces + 2);
3326 field_is_static (struct field *f)
3328 /* "static" fields are the fields whose location is not relative
3329 to the address of the enclosing struct. It would be nice to
3330 have a dedicated flag that would be set for static fields when
3331 the type is being created. But in practice, checking the field
3332 loc_kind should give us an accurate answer. */
3333 return (FIELD_LOC_KIND (*f) == FIELD_LOC_KIND_PHYSNAME
3334 || FIELD_LOC_KIND (*f) == FIELD_LOC_KIND_PHYSADDR);
3338 dump_fn_fieldlists (struct type *type, int spaces)
3344 printfi_filtered (spaces, "fn_fieldlists ");
3345 gdb_print_host_address (TYPE_FN_FIELDLISTS (type), gdb_stdout);
3346 printf_filtered ("\n");
3347 for (method_idx = 0; method_idx < TYPE_NFN_FIELDS (type); method_idx++)
3349 f = TYPE_FN_FIELDLIST1 (type, method_idx);
3350 printfi_filtered (spaces + 2, "[%d] name '%s' (",
3352 TYPE_FN_FIELDLIST_NAME (type, method_idx));
3353 gdb_print_host_address (TYPE_FN_FIELDLIST_NAME (type, method_idx),
3355 printf_filtered (_(") length %d\n"),
3356 TYPE_FN_FIELDLIST_LENGTH (type, method_idx));
3357 for (overload_idx = 0;
3358 overload_idx < TYPE_FN_FIELDLIST_LENGTH (type, method_idx);
3361 printfi_filtered (spaces + 4, "[%d] physname '%s' (",
3363 TYPE_FN_FIELD_PHYSNAME (f, overload_idx));
3364 gdb_print_host_address (TYPE_FN_FIELD_PHYSNAME (f, overload_idx),
3366 printf_filtered (")\n");
3367 printfi_filtered (spaces + 8, "type ");
3368 gdb_print_host_address (TYPE_FN_FIELD_TYPE (f, overload_idx),
3370 printf_filtered ("\n");
3372 recursive_dump_type (TYPE_FN_FIELD_TYPE (f, overload_idx),
3375 printfi_filtered (spaces + 8, "args ");
3376 gdb_print_host_address (TYPE_FN_FIELD_ARGS (f, overload_idx),
3378 printf_filtered ("\n");
3380 print_arg_types (TYPE_FN_FIELD_ARGS (f, overload_idx),
3381 TYPE_NFIELDS (TYPE_FN_FIELD_TYPE (f,
3384 printfi_filtered (spaces + 8, "fcontext ");
3385 gdb_print_host_address (TYPE_FN_FIELD_FCONTEXT (f, overload_idx),
3387 printf_filtered ("\n");
3389 printfi_filtered (spaces + 8, "is_const %d\n",
3390 TYPE_FN_FIELD_CONST (f, overload_idx));
3391 printfi_filtered (spaces + 8, "is_volatile %d\n",
3392 TYPE_FN_FIELD_VOLATILE (f, overload_idx));
3393 printfi_filtered (spaces + 8, "is_private %d\n",
3394 TYPE_FN_FIELD_PRIVATE (f, overload_idx));
3395 printfi_filtered (spaces + 8, "is_protected %d\n",
3396 TYPE_FN_FIELD_PROTECTED (f, overload_idx));
3397 printfi_filtered (spaces + 8, "is_stub %d\n",
3398 TYPE_FN_FIELD_STUB (f, overload_idx));
3399 printfi_filtered (spaces + 8, "voffset %u\n",
3400 TYPE_FN_FIELD_VOFFSET (f, overload_idx));
3406 print_cplus_stuff (struct type *type, int spaces)
3408 printfi_filtered (spaces, "n_baseclasses %d\n",
3409 TYPE_N_BASECLASSES (type));
3410 printfi_filtered (spaces, "nfn_fields %d\n",
3411 TYPE_NFN_FIELDS (type));
3412 if (TYPE_N_BASECLASSES (type) > 0)
3414 printfi_filtered (spaces, "virtual_field_bits (%d bits at *",
3415 TYPE_N_BASECLASSES (type));
3416 gdb_print_host_address (TYPE_FIELD_VIRTUAL_BITS (type),
3418 printf_filtered (")");
3420 print_bit_vector (TYPE_FIELD_VIRTUAL_BITS (type),
3421 TYPE_N_BASECLASSES (type));
3422 puts_filtered ("\n");
3424 if (TYPE_NFIELDS (type) > 0)
3426 if (TYPE_FIELD_PRIVATE_BITS (type) != NULL)
3428 printfi_filtered (spaces,
3429 "private_field_bits (%d bits at *",
3430 TYPE_NFIELDS (type));
3431 gdb_print_host_address (TYPE_FIELD_PRIVATE_BITS (type),
3433 printf_filtered (")");
3434 print_bit_vector (TYPE_FIELD_PRIVATE_BITS (type),
3435 TYPE_NFIELDS (type));
3436 puts_filtered ("\n");
3438 if (TYPE_FIELD_PROTECTED_BITS (type) != NULL)
3440 printfi_filtered (spaces,
3441 "protected_field_bits (%d bits at *",
3442 TYPE_NFIELDS (type));
3443 gdb_print_host_address (TYPE_FIELD_PROTECTED_BITS (type),
3445 printf_filtered (")");
3446 print_bit_vector (TYPE_FIELD_PROTECTED_BITS (type),
3447 TYPE_NFIELDS (type));
3448 puts_filtered ("\n");
3451 if (TYPE_NFN_FIELDS (type) > 0)
3453 dump_fn_fieldlists (type, spaces);
3457 /* Print the contents of the TYPE's type_specific union, assuming that
3458 its type-specific kind is TYPE_SPECIFIC_GNAT_STUFF. */
3461 print_gnat_stuff (struct type *type, int spaces)
3463 struct type *descriptive_type = TYPE_DESCRIPTIVE_TYPE (type);
3465 recursive_dump_type (descriptive_type, spaces + 2);
3468 static struct obstack dont_print_type_obstack;
3471 recursive_dump_type (struct type *type, int spaces)
3476 obstack_begin (&dont_print_type_obstack, 0);
3478 if (TYPE_NFIELDS (type) > 0
3479 || (HAVE_CPLUS_STRUCT (type) && TYPE_NFN_FIELDS (type) > 0))
3481 struct type **first_dont_print
3482 = (struct type **) obstack_base (&dont_print_type_obstack);
3484 int i = (struct type **)
3485 obstack_next_free (&dont_print_type_obstack) - first_dont_print;
3489 if (type == first_dont_print[i])
3491 printfi_filtered (spaces, "type node ");
3492 gdb_print_host_address (type, gdb_stdout);
3493 printf_filtered (_(" <same as already seen type>\n"));
3498 obstack_ptr_grow (&dont_print_type_obstack, type);
3501 printfi_filtered (spaces, "type node ");
3502 gdb_print_host_address (type, gdb_stdout);
3503 printf_filtered ("\n");
3504 printfi_filtered (spaces, "name '%s' (",
3505 TYPE_NAME (type) ? TYPE_NAME (type) : "<NULL>");
3506 gdb_print_host_address (TYPE_NAME (type), gdb_stdout);
3507 printf_filtered (")\n");
3508 printfi_filtered (spaces, "tagname '%s' (",
3509 TYPE_TAG_NAME (type) ? TYPE_TAG_NAME (type) : "<NULL>");
3510 gdb_print_host_address (TYPE_TAG_NAME (type), gdb_stdout);
3511 printf_filtered (")\n");
3512 printfi_filtered (spaces, "code 0x%x ", TYPE_CODE (type));
3513 switch (TYPE_CODE (type))
3515 case TYPE_CODE_UNDEF:
3516 printf_filtered ("(TYPE_CODE_UNDEF)");
3519 printf_filtered ("(TYPE_CODE_PTR)");
3521 case TYPE_CODE_ARRAY:
3522 printf_filtered ("(TYPE_CODE_ARRAY)");
3524 case TYPE_CODE_STRUCT:
3525 printf_filtered ("(TYPE_CODE_STRUCT)");
3527 case TYPE_CODE_UNION:
3528 printf_filtered ("(TYPE_CODE_UNION)");
3530 case TYPE_CODE_ENUM:
3531 printf_filtered ("(TYPE_CODE_ENUM)");
3533 case TYPE_CODE_FLAGS:
3534 printf_filtered ("(TYPE_CODE_FLAGS)");
3536 case TYPE_CODE_FUNC:
3537 printf_filtered ("(TYPE_CODE_FUNC)");
3540 printf_filtered ("(TYPE_CODE_INT)");
3543 printf_filtered ("(TYPE_CODE_FLT)");
3545 case TYPE_CODE_VOID:
3546 printf_filtered ("(TYPE_CODE_VOID)");
3549 printf_filtered ("(TYPE_CODE_SET)");
3551 case TYPE_CODE_RANGE:
3552 printf_filtered ("(TYPE_CODE_RANGE)");
3554 case TYPE_CODE_STRING:
3555 printf_filtered ("(TYPE_CODE_STRING)");
3557 case TYPE_CODE_ERROR:
3558 printf_filtered ("(TYPE_CODE_ERROR)");
3560 case TYPE_CODE_MEMBERPTR:
3561 printf_filtered ("(TYPE_CODE_MEMBERPTR)");
3563 case TYPE_CODE_METHODPTR:
3564 printf_filtered ("(TYPE_CODE_METHODPTR)");
3566 case TYPE_CODE_METHOD:
3567 printf_filtered ("(TYPE_CODE_METHOD)");
3570 printf_filtered ("(TYPE_CODE_REF)");
3572 case TYPE_CODE_CHAR:
3573 printf_filtered ("(TYPE_CODE_CHAR)");
3575 case TYPE_CODE_BOOL:
3576 printf_filtered ("(TYPE_CODE_BOOL)");
3578 case TYPE_CODE_COMPLEX:
3579 printf_filtered ("(TYPE_CODE_COMPLEX)");
3581 case TYPE_CODE_TYPEDEF:
3582 printf_filtered ("(TYPE_CODE_TYPEDEF)");
3584 case TYPE_CODE_NAMESPACE:
3585 printf_filtered ("(TYPE_CODE_NAMESPACE)");
3588 printf_filtered ("(UNKNOWN TYPE CODE)");
3591 puts_filtered ("\n");
3592 printfi_filtered (spaces, "length %d\n", TYPE_LENGTH (type));
3593 if (TYPE_OBJFILE_OWNED (type))
3595 printfi_filtered (spaces, "objfile ");
3596 gdb_print_host_address (TYPE_OWNER (type).objfile, gdb_stdout);
3600 printfi_filtered (spaces, "gdbarch ");
3601 gdb_print_host_address (TYPE_OWNER (type).gdbarch, gdb_stdout);
3603 printf_filtered ("\n");
3604 printfi_filtered (spaces, "target_type ");
3605 gdb_print_host_address (TYPE_TARGET_TYPE (type), gdb_stdout);
3606 printf_filtered ("\n");
3607 if (TYPE_TARGET_TYPE (type) != NULL)
3609 recursive_dump_type (TYPE_TARGET_TYPE (type), spaces + 2);
3611 printfi_filtered (spaces, "pointer_type ");
3612 gdb_print_host_address (TYPE_POINTER_TYPE (type), gdb_stdout);
3613 printf_filtered ("\n");
3614 printfi_filtered (spaces, "reference_type ");
3615 gdb_print_host_address (TYPE_REFERENCE_TYPE (type), gdb_stdout);
3616 printf_filtered ("\n");
3617 printfi_filtered (spaces, "type_chain ");
3618 gdb_print_host_address (TYPE_CHAIN (type), gdb_stdout);
3619 printf_filtered ("\n");
3620 printfi_filtered (spaces, "instance_flags 0x%x",
3621 TYPE_INSTANCE_FLAGS (type));
3622 if (TYPE_CONST (type))
3624 puts_filtered (" TYPE_FLAG_CONST");
3626 if (TYPE_VOLATILE (type))
3628 puts_filtered (" TYPE_FLAG_VOLATILE");
3630 if (TYPE_CODE_SPACE (type))
3632 puts_filtered (" TYPE_FLAG_CODE_SPACE");
3634 if (TYPE_DATA_SPACE (type))
3636 puts_filtered (" TYPE_FLAG_DATA_SPACE");
3638 if (TYPE_ADDRESS_CLASS_1 (type))
3640 puts_filtered (" TYPE_FLAG_ADDRESS_CLASS_1");
3642 if (TYPE_ADDRESS_CLASS_2 (type))
3644 puts_filtered (" TYPE_FLAG_ADDRESS_CLASS_2");
3646 if (TYPE_RESTRICT (type))
3648 puts_filtered (" TYPE_FLAG_RESTRICT");
3650 puts_filtered ("\n");
3652 printfi_filtered (spaces, "flags");
3653 if (TYPE_UNSIGNED (type))
3655 puts_filtered (" TYPE_FLAG_UNSIGNED");
3657 if (TYPE_NOSIGN (type))
3659 puts_filtered (" TYPE_FLAG_NOSIGN");
3661 if (TYPE_STUB (type))
3663 puts_filtered (" TYPE_FLAG_STUB");
3665 if (TYPE_TARGET_STUB (type))
3667 puts_filtered (" TYPE_FLAG_TARGET_STUB");
3669 if (TYPE_STATIC (type))
3671 puts_filtered (" TYPE_FLAG_STATIC");
3673 if (TYPE_PROTOTYPED (type))
3675 puts_filtered (" TYPE_FLAG_PROTOTYPED");
3677 if (TYPE_INCOMPLETE (type))
3679 puts_filtered (" TYPE_FLAG_INCOMPLETE");
3681 if (TYPE_VARARGS (type))
3683 puts_filtered (" TYPE_FLAG_VARARGS");
3685 /* This is used for things like AltiVec registers on ppc. Gcc emits
3686 an attribute for the array type, which tells whether or not we
3687 have a vector, instead of a regular array. */
3688 if (TYPE_VECTOR (type))
3690 puts_filtered (" TYPE_FLAG_VECTOR");
3692 if (TYPE_FIXED_INSTANCE (type))
3694 puts_filtered (" TYPE_FIXED_INSTANCE");
3696 if (TYPE_STUB_SUPPORTED (type))
3698 puts_filtered (" TYPE_STUB_SUPPORTED");
3700 if (TYPE_NOTTEXT (type))
3702 puts_filtered (" TYPE_NOTTEXT");
3704 puts_filtered ("\n");
3705 printfi_filtered (spaces, "nfields %d ", TYPE_NFIELDS (type));
3706 gdb_print_host_address (TYPE_FIELDS (type), gdb_stdout);
3707 puts_filtered ("\n");
3708 for (idx = 0; idx < TYPE_NFIELDS (type); idx++)
3710 if (TYPE_CODE (type) == TYPE_CODE_ENUM)
3711 printfi_filtered (spaces + 2,
3712 "[%d] enumval %s type ",
3713 idx, plongest (TYPE_FIELD_ENUMVAL (type, idx)));
3715 printfi_filtered (spaces + 2,
3716 "[%d] bitpos %d bitsize %d type ",
3717 idx, TYPE_FIELD_BITPOS (type, idx),
3718 TYPE_FIELD_BITSIZE (type, idx));
3719 gdb_print_host_address (TYPE_FIELD_TYPE (type, idx), gdb_stdout);
3720 printf_filtered (" name '%s' (",
3721 TYPE_FIELD_NAME (type, idx) != NULL
3722 ? TYPE_FIELD_NAME (type, idx)
3724 gdb_print_host_address (TYPE_FIELD_NAME (type, idx), gdb_stdout);
3725 printf_filtered (")\n");
3726 if (TYPE_FIELD_TYPE (type, idx) != NULL)
3728 recursive_dump_type (TYPE_FIELD_TYPE (type, idx), spaces + 4);
3731 if (TYPE_CODE (type) == TYPE_CODE_RANGE)
3733 printfi_filtered (spaces, "low %s%s high %s%s\n",
3734 plongest (TYPE_LOW_BOUND (type)),
3735 TYPE_LOW_BOUND_UNDEFINED (type) ? " (undefined)" : "",
3736 plongest (TYPE_HIGH_BOUND (type)),
3737 TYPE_HIGH_BOUND_UNDEFINED (type)
3738 ? " (undefined)" : "");
3740 printfi_filtered (spaces, "vptr_basetype ");
3741 gdb_print_host_address (TYPE_VPTR_BASETYPE (type), gdb_stdout);
3742 puts_filtered ("\n");
3743 if (TYPE_VPTR_BASETYPE (type) != NULL)
3745 recursive_dump_type (TYPE_VPTR_BASETYPE (type), spaces + 2);
3747 printfi_filtered (spaces, "vptr_fieldno %d\n",
3748 TYPE_VPTR_FIELDNO (type));
3750 switch (TYPE_SPECIFIC_FIELD (type))
3752 case TYPE_SPECIFIC_CPLUS_STUFF:
3753 printfi_filtered (spaces, "cplus_stuff ");
3754 gdb_print_host_address (TYPE_CPLUS_SPECIFIC (type),
3756 puts_filtered ("\n");
3757 print_cplus_stuff (type, spaces);
3760 case TYPE_SPECIFIC_GNAT_STUFF:
3761 printfi_filtered (spaces, "gnat_stuff ");
3762 gdb_print_host_address (TYPE_GNAT_SPECIFIC (type), gdb_stdout);
3763 puts_filtered ("\n");
3764 print_gnat_stuff (type, spaces);
3767 case TYPE_SPECIFIC_FLOATFORMAT:
3768 printfi_filtered (spaces, "floatformat ");
3769 if (TYPE_FLOATFORMAT (type) == NULL)
3770 puts_filtered ("(null)");
3773 puts_filtered ("{ ");
3774 if (TYPE_FLOATFORMAT (type)[0] == NULL
3775 || TYPE_FLOATFORMAT (type)[0]->name == NULL)
3776 puts_filtered ("(null)");
3778 puts_filtered (TYPE_FLOATFORMAT (type)[0]->name);
3780 puts_filtered (", ");
3781 if (TYPE_FLOATFORMAT (type)[1] == NULL
3782 || TYPE_FLOATFORMAT (type)[1]->name == NULL)
3783 puts_filtered ("(null)");
3785 puts_filtered (TYPE_FLOATFORMAT (type)[1]->name);
3787 puts_filtered (" }");
3789 puts_filtered ("\n");
3792 case TYPE_SPECIFIC_FUNC:
3793 printfi_filtered (spaces, "calling_convention %d\n",
3794 TYPE_CALLING_CONVENTION (type));
3795 /* tail_call_list is not printed. */
3800 obstack_free (&dont_print_type_obstack, NULL);
3803 /* Trivial helpers for the libiberty hash table, for mapping one
3808 struct type *old, *new;
3812 type_pair_hash (const void *item)
3814 const struct type_pair *pair = item;
3816 return htab_hash_pointer (pair->old);
3820 type_pair_eq (const void *item_lhs, const void *item_rhs)
3822 const struct type_pair *lhs = item_lhs, *rhs = item_rhs;
3824 return lhs->old == rhs->old;
3827 /* Allocate the hash table used by copy_type_recursive to walk
3828 types without duplicates. We use OBJFILE's obstack, because
3829 OBJFILE is about to be deleted. */
3832 create_copied_types_hash (struct objfile *objfile)
3834 return htab_create_alloc_ex (1, type_pair_hash, type_pair_eq,
3835 NULL, &objfile->objfile_obstack,
3836 hashtab_obstack_allocate,
3837 dummy_obstack_deallocate);
3840 /* Recursively copy (deep copy) TYPE, if it is associated with
3841 OBJFILE. Return a new type allocated using malloc, a saved type if
3842 we have already visited TYPE (using COPIED_TYPES), or TYPE if it is
3843 not associated with OBJFILE. */
3846 copy_type_recursive (struct objfile *objfile,
3848 htab_t copied_types)
3850 struct type_pair *stored, pair;
3852 struct type *new_type;
3854 if (! TYPE_OBJFILE_OWNED (type))
3857 /* This type shouldn't be pointing to any types in other objfiles;
3858 if it did, the type might disappear unexpectedly. */
3859 gdb_assert (TYPE_OBJFILE (type) == objfile);
3862 slot = htab_find_slot (copied_types, &pair, INSERT);
3864 return ((struct type_pair *) *slot)->new;
3866 new_type = alloc_type_arch (get_type_arch (type));
3868 /* We must add the new type to the hash table immediately, in case
3869 we encounter this type again during a recursive call below. */
3871 = obstack_alloc (&objfile->objfile_obstack, sizeof (struct type_pair));
3873 stored->new = new_type;
3876 /* Copy the common fields of types. For the main type, we simply
3877 copy the entire thing and then update specific fields as needed. */
3878 *TYPE_MAIN_TYPE (new_type) = *TYPE_MAIN_TYPE (type);
3879 TYPE_OBJFILE_OWNED (new_type) = 0;
3880 TYPE_OWNER (new_type).gdbarch = get_type_arch (type);
3882 if (TYPE_NAME (type))
3883 TYPE_NAME (new_type) = xstrdup (TYPE_NAME (type));
3884 if (TYPE_TAG_NAME (type))
3885 TYPE_TAG_NAME (new_type) = xstrdup (TYPE_TAG_NAME (type));
3887 TYPE_INSTANCE_FLAGS (new_type) = TYPE_INSTANCE_FLAGS (type);
3888 TYPE_LENGTH (new_type) = TYPE_LENGTH (type);
3890 /* Copy the fields. */
3891 if (TYPE_NFIELDS (type))
3895 nfields = TYPE_NFIELDS (type);
3896 TYPE_FIELDS (new_type) = XCNEWVEC (struct field, nfields);
3897 for (i = 0; i < nfields; i++)
3899 TYPE_FIELD_ARTIFICIAL (new_type, i) =
3900 TYPE_FIELD_ARTIFICIAL (type, i);
3901 TYPE_FIELD_BITSIZE (new_type, i) = TYPE_FIELD_BITSIZE (type, i);
3902 if (TYPE_FIELD_TYPE (type, i))
3903 TYPE_FIELD_TYPE (new_type, i)
3904 = copy_type_recursive (objfile, TYPE_FIELD_TYPE (type, i),
3906 if (TYPE_FIELD_NAME (type, i))
3907 TYPE_FIELD_NAME (new_type, i) =
3908 xstrdup (TYPE_FIELD_NAME (type, i));
3909 switch (TYPE_FIELD_LOC_KIND (type, i))
3911 case FIELD_LOC_KIND_BITPOS:
3912 SET_FIELD_BITPOS (TYPE_FIELD (new_type, i),
3913 TYPE_FIELD_BITPOS (type, i));
3915 case FIELD_LOC_KIND_ENUMVAL:
3916 SET_FIELD_ENUMVAL (TYPE_FIELD (new_type, i),
3917 TYPE_FIELD_ENUMVAL (type, i));
3919 case FIELD_LOC_KIND_PHYSADDR:
3920 SET_FIELD_PHYSADDR (TYPE_FIELD (new_type, i),
3921 TYPE_FIELD_STATIC_PHYSADDR (type, i));
3923 case FIELD_LOC_KIND_PHYSNAME:
3924 SET_FIELD_PHYSNAME (TYPE_FIELD (new_type, i),
3925 xstrdup (TYPE_FIELD_STATIC_PHYSNAME (type,
3929 internal_error (__FILE__, __LINE__,
3930 _("Unexpected type field location kind: %d"),
3931 TYPE_FIELD_LOC_KIND (type, i));
3936 /* For range types, copy the bounds information. */
3937 if (TYPE_CODE (type) == TYPE_CODE_RANGE)
3939 TYPE_RANGE_DATA (new_type) = xmalloc (sizeof (struct range_bounds));
3940 *TYPE_RANGE_DATA (new_type) = *TYPE_RANGE_DATA (type);
3943 /* Copy pointers to other types. */
3944 if (TYPE_TARGET_TYPE (type))
3945 TYPE_TARGET_TYPE (new_type) =
3946 copy_type_recursive (objfile,
3947 TYPE_TARGET_TYPE (type),
3949 if (TYPE_VPTR_BASETYPE (type))
3950 TYPE_VPTR_BASETYPE (new_type) =
3951 copy_type_recursive (objfile,
3952 TYPE_VPTR_BASETYPE (type),
3954 /* Maybe copy the type_specific bits.
3956 NOTE drow/2005-12-09: We do not copy the C++-specific bits like
3957 base classes and methods. There's no fundamental reason why we
3958 can't, but at the moment it is not needed. */
3960 if (TYPE_CODE (type) == TYPE_CODE_FLT)
3961 TYPE_FLOATFORMAT (new_type) = TYPE_FLOATFORMAT (type);
3962 else if (TYPE_CODE (type) == TYPE_CODE_STRUCT
3963 || TYPE_CODE (type) == TYPE_CODE_UNION
3964 || TYPE_CODE (type) == TYPE_CODE_NAMESPACE)
3965 INIT_CPLUS_SPECIFIC (new_type);
3970 /* Make a copy of the given TYPE, except that the pointer & reference
3971 types are not preserved.
3973 This function assumes that the given type has an associated objfile.
3974 This objfile is used to allocate the new type. */
3977 copy_type (const struct type *type)
3979 struct type *new_type;
3981 gdb_assert (TYPE_OBJFILE_OWNED (type));
3983 new_type = alloc_type_copy (type);
3984 TYPE_INSTANCE_FLAGS (new_type) = TYPE_INSTANCE_FLAGS (type);
3985 TYPE_LENGTH (new_type) = TYPE_LENGTH (type);
3986 memcpy (TYPE_MAIN_TYPE (new_type), TYPE_MAIN_TYPE (type),
3987 sizeof (struct main_type));
3992 /* Helper functions to initialize architecture-specific types. */
3994 /* Allocate a type structure associated with GDBARCH and set its
3995 CODE, LENGTH, and NAME fields. */
3998 arch_type (struct gdbarch *gdbarch,
3999 enum type_code code, int length, char *name)
4003 type = alloc_type_arch (gdbarch);
4004 TYPE_CODE (type) = code;
4005 TYPE_LENGTH (type) = length;
4008 TYPE_NAME (type) = xstrdup (name);
4013 /* Allocate a TYPE_CODE_INT type structure associated with GDBARCH.
4014 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
4015 the type's TYPE_UNSIGNED flag. NAME is the type name. */
4018 arch_integer_type (struct gdbarch *gdbarch,
4019 int bit, int unsigned_p, char *name)
4023 t = arch_type (gdbarch, TYPE_CODE_INT, bit / TARGET_CHAR_BIT, name);
4025 TYPE_UNSIGNED (t) = 1;
4026 if (name && strcmp (name, "char") == 0)
4027 TYPE_NOSIGN (t) = 1;
4032 /* Allocate a TYPE_CODE_CHAR type structure associated with GDBARCH.
4033 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
4034 the type's TYPE_UNSIGNED flag. NAME is the type name. */
4037 arch_character_type (struct gdbarch *gdbarch,
4038 int bit, int unsigned_p, char *name)
4042 t = arch_type (gdbarch, TYPE_CODE_CHAR, bit / TARGET_CHAR_BIT, name);
4044 TYPE_UNSIGNED (t) = 1;
4049 /* Allocate a TYPE_CODE_BOOL type structure associated with GDBARCH.
4050 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
4051 the type's TYPE_UNSIGNED flag. NAME is the type name. */
4054 arch_boolean_type (struct gdbarch *gdbarch,
4055 int bit, int unsigned_p, char *name)
4059 t = arch_type (gdbarch, TYPE_CODE_BOOL, bit / TARGET_CHAR_BIT, name);
4061 TYPE_UNSIGNED (t) = 1;
4066 /* Allocate a TYPE_CODE_FLT type structure associated with GDBARCH.
4067 BIT is the type size in bits; if BIT equals -1, the size is
4068 determined by the floatformat. NAME is the type name. Set the
4069 TYPE_FLOATFORMAT from FLOATFORMATS. */
4072 arch_float_type (struct gdbarch *gdbarch,
4073 int bit, char *name, const struct floatformat **floatformats)
4079 gdb_assert (floatformats != NULL);
4080 gdb_assert (floatformats[0] != NULL && floatformats[1] != NULL);
4081 bit = floatformats[0]->totalsize;
4083 gdb_assert (bit >= 0);
4085 t = arch_type (gdbarch, TYPE_CODE_FLT, bit / TARGET_CHAR_BIT, name);
4086 TYPE_FLOATFORMAT (t) = floatformats;
4090 /* Allocate a TYPE_CODE_COMPLEX type structure associated with GDBARCH.
4091 NAME is the type name. TARGET_TYPE is the component float type. */
4094 arch_complex_type (struct gdbarch *gdbarch,
4095 char *name, struct type *target_type)
4099 t = arch_type (gdbarch, TYPE_CODE_COMPLEX,
4100 2 * TYPE_LENGTH (target_type), name);
4101 TYPE_TARGET_TYPE (t) = target_type;
4105 /* Allocate a TYPE_CODE_FLAGS type structure associated with GDBARCH.
4106 NAME is the type name. LENGTH is the size of the flag word in bytes. */
4109 arch_flags_type (struct gdbarch *gdbarch, char *name, int length)
4111 int nfields = length * TARGET_CHAR_BIT;
4114 type = arch_type (gdbarch, TYPE_CODE_FLAGS, length, name);
4115 TYPE_UNSIGNED (type) = 1;
4116 TYPE_NFIELDS (type) = nfields;
4117 TYPE_FIELDS (type) = TYPE_ZALLOC (type, nfields * sizeof (struct field));
4122 /* Add field to TYPE_CODE_FLAGS type TYPE to indicate the bit at
4123 position BITPOS is called NAME. */
4126 append_flags_type_flag (struct type *type, int bitpos, char *name)
4128 gdb_assert (TYPE_CODE (type) == TYPE_CODE_FLAGS);
4129 gdb_assert (bitpos < TYPE_NFIELDS (type));
4130 gdb_assert (bitpos >= 0);
4134 TYPE_FIELD_NAME (type, bitpos) = xstrdup (name);
4135 SET_FIELD_BITPOS (TYPE_FIELD (type, bitpos), bitpos);
4139 /* Don't show this field to the user. */
4140 SET_FIELD_BITPOS (TYPE_FIELD (type, bitpos), -1);
4144 /* Allocate a TYPE_CODE_STRUCT or TYPE_CODE_UNION type structure (as
4145 specified by CODE) associated with GDBARCH. NAME is the type name. */
4148 arch_composite_type (struct gdbarch *gdbarch, char *name, enum type_code code)
4152 gdb_assert (code == TYPE_CODE_STRUCT || code == TYPE_CODE_UNION);
4153 t = arch_type (gdbarch, code, 0, NULL);
4154 TYPE_TAG_NAME (t) = name;
4155 INIT_CPLUS_SPECIFIC (t);
4159 /* Add new field with name NAME and type FIELD to composite type T.
4160 Do not set the field's position or adjust the type's length;
4161 the caller should do so. Return the new field. */
4164 append_composite_type_field_raw (struct type *t, char *name,
4169 TYPE_NFIELDS (t) = TYPE_NFIELDS (t) + 1;
4170 TYPE_FIELDS (t) = xrealloc (TYPE_FIELDS (t),
4171 sizeof (struct field) * TYPE_NFIELDS (t));
4172 f = &(TYPE_FIELDS (t)[TYPE_NFIELDS (t) - 1]);
4173 memset (f, 0, sizeof f[0]);
4174 FIELD_TYPE (f[0]) = field;
4175 FIELD_NAME (f[0]) = name;
4179 /* Add new field with name NAME and type FIELD to composite type T.
4180 ALIGNMENT (if non-zero) specifies the minimum field alignment. */
4183 append_composite_type_field_aligned (struct type *t, char *name,
4184 struct type *field, int alignment)
4186 struct field *f = append_composite_type_field_raw (t, name, field);
4188 if (TYPE_CODE (t) == TYPE_CODE_UNION)
4190 if (TYPE_LENGTH (t) < TYPE_LENGTH (field))
4191 TYPE_LENGTH (t) = TYPE_LENGTH (field);
4193 else if (TYPE_CODE (t) == TYPE_CODE_STRUCT)
4195 TYPE_LENGTH (t) = TYPE_LENGTH (t) + TYPE_LENGTH (field);
4196 if (TYPE_NFIELDS (t) > 1)
4198 SET_FIELD_BITPOS (f[0],
4199 (FIELD_BITPOS (f[-1])
4200 + (TYPE_LENGTH (FIELD_TYPE (f[-1]))
4201 * TARGET_CHAR_BIT)));
4207 alignment *= TARGET_CHAR_BIT;
4208 left = FIELD_BITPOS (f[0]) % alignment;
4212 SET_FIELD_BITPOS (f[0], FIELD_BITPOS (f[0]) + (alignment - left));
4213 TYPE_LENGTH (t) += (alignment - left) / TARGET_CHAR_BIT;
4220 /* Add new field with name NAME and type FIELD to composite type T. */
4223 append_composite_type_field (struct type *t, char *name,
4226 append_composite_type_field_aligned (t, name, field, 0);
4229 static struct gdbarch_data *gdbtypes_data;
4231 const struct builtin_type *
4232 builtin_type (struct gdbarch *gdbarch)
4234 return gdbarch_data (gdbarch, gdbtypes_data);
4238 gdbtypes_post_init (struct gdbarch *gdbarch)
4240 struct builtin_type *builtin_type
4241 = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct builtin_type);
4244 builtin_type->builtin_void
4245 = arch_type (gdbarch, TYPE_CODE_VOID, 1, "void");
4246 builtin_type->builtin_char
4247 = arch_integer_type (gdbarch, TARGET_CHAR_BIT,
4248 !gdbarch_char_signed (gdbarch), "char");
4249 builtin_type->builtin_signed_char
4250 = arch_integer_type (gdbarch, TARGET_CHAR_BIT,
4252 builtin_type->builtin_unsigned_char
4253 = arch_integer_type (gdbarch, TARGET_CHAR_BIT,
4254 1, "unsigned char");
4255 builtin_type->builtin_short
4256 = arch_integer_type (gdbarch, gdbarch_short_bit (gdbarch),
4258 builtin_type->builtin_unsigned_short
4259 = arch_integer_type (gdbarch, gdbarch_short_bit (gdbarch),
4260 1, "unsigned short");
4261 builtin_type->builtin_int
4262 = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch),
4264 builtin_type->builtin_unsigned_int
4265 = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch),
4267 builtin_type->builtin_long
4268 = arch_integer_type (gdbarch, gdbarch_long_bit (gdbarch),
4270 builtin_type->builtin_unsigned_long
4271 = arch_integer_type (gdbarch, gdbarch_long_bit (gdbarch),
4272 1, "unsigned long");
4273 builtin_type->builtin_long_long
4274 = arch_integer_type (gdbarch, gdbarch_long_long_bit (gdbarch),
4276 builtin_type->builtin_unsigned_long_long
4277 = arch_integer_type (gdbarch, gdbarch_long_long_bit (gdbarch),
4278 1, "unsigned long long");
4279 builtin_type->builtin_float
4280 = arch_float_type (gdbarch, gdbarch_float_bit (gdbarch),
4281 "float", gdbarch_float_format (gdbarch));
4282 builtin_type->builtin_double
4283 = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch),
4284 "double", gdbarch_double_format (gdbarch));
4285 builtin_type->builtin_long_double
4286 = arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch),
4287 "long double", gdbarch_long_double_format (gdbarch));
4288 builtin_type->builtin_complex
4289 = arch_complex_type (gdbarch, "complex",
4290 builtin_type->builtin_float);
4291 builtin_type->builtin_double_complex
4292 = arch_complex_type (gdbarch, "double complex",
4293 builtin_type->builtin_double);
4294 builtin_type->builtin_string
4295 = arch_type (gdbarch, TYPE_CODE_STRING, 1, "string");
4296 builtin_type->builtin_bool
4297 = arch_type (gdbarch, TYPE_CODE_BOOL, 1, "bool");
4299 /* The following three are about decimal floating point types, which
4300 are 32-bits, 64-bits and 128-bits respectively. */
4301 builtin_type->builtin_decfloat
4302 = arch_type (gdbarch, TYPE_CODE_DECFLOAT, 32 / 8, "_Decimal32");
4303 builtin_type->builtin_decdouble
4304 = arch_type (gdbarch, TYPE_CODE_DECFLOAT, 64 / 8, "_Decimal64");
4305 builtin_type->builtin_declong
4306 = arch_type (gdbarch, TYPE_CODE_DECFLOAT, 128 / 8, "_Decimal128");
4308 /* "True" character types. */
4309 builtin_type->builtin_true_char
4310 = arch_character_type (gdbarch, TARGET_CHAR_BIT, 0, "true character");
4311 builtin_type->builtin_true_unsigned_char
4312 = arch_character_type (gdbarch, TARGET_CHAR_BIT, 1, "true character");
4314 /* Fixed-size integer types. */
4315 builtin_type->builtin_int0
4316 = arch_integer_type (gdbarch, 0, 0, "int0_t");
4317 builtin_type->builtin_int8
4318 = arch_integer_type (gdbarch, 8, 0, "int8_t");
4319 builtin_type->builtin_uint8
4320 = arch_integer_type (gdbarch, 8, 1, "uint8_t");
4321 builtin_type->builtin_int16
4322 = arch_integer_type (gdbarch, 16, 0, "int16_t");
4323 builtin_type->builtin_uint16
4324 = arch_integer_type (gdbarch, 16, 1, "uint16_t");
4325 builtin_type->builtin_int32
4326 = arch_integer_type (gdbarch, 32, 0, "int32_t");
4327 builtin_type->builtin_uint32
4328 = arch_integer_type (gdbarch, 32, 1, "uint32_t");
4329 builtin_type->builtin_int64
4330 = arch_integer_type (gdbarch, 64, 0, "int64_t");
4331 builtin_type->builtin_uint64
4332 = arch_integer_type (gdbarch, 64, 1, "uint64_t");
4333 builtin_type->builtin_int128
4334 = arch_integer_type (gdbarch, 128, 0, "int128_t");
4335 builtin_type->builtin_uint128
4336 = arch_integer_type (gdbarch, 128, 1, "uint128_t");
4337 TYPE_INSTANCE_FLAGS (builtin_type->builtin_int8) |=
4338 TYPE_INSTANCE_FLAG_NOTTEXT;
4339 TYPE_INSTANCE_FLAGS (builtin_type->builtin_uint8) |=
4340 TYPE_INSTANCE_FLAG_NOTTEXT;
4342 /* Wide character types. */
4343 builtin_type->builtin_char16
4344 = arch_integer_type (gdbarch, 16, 0, "char16_t");
4345 builtin_type->builtin_char32
4346 = arch_integer_type (gdbarch, 32, 0, "char32_t");
4349 /* Default data/code pointer types. */
4350 builtin_type->builtin_data_ptr
4351 = lookup_pointer_type (builtin_type->builtin_void);
4352 builtin_type->builtin_func_ptr
4353 = lookup_pointer_type (lookup_function_type (builtin_type->builtin_void));
4354 builtin_type->builtin_func_func
4355 = lookup_function_type (builtin_type->builtin_func_ptr);
4357 /* This type represents a GDB internal function. */
4358 builtin_type->internal_fn
4359 = arch_type (gdbarch, TYPE_CODE_INTERNAL_FUNCTION, 0,
4360 "<internal function>");
4362 return builtin_type;
4365 /* This set of objfile-based types is intended to be used by symbol
4366 readers as basic types. */
4368 static const struct objfile_data *objfile_type_data;
4370 const struct objfile_type *
4371 objfile_type (struct objfile *objfile)
4373 struct gdbarch *gdbarch;
4374 struct objfile_type *objfile_type
4375 = objfile_data (objfile, objfile_type_data);
4378 return objfile_type;
4380 objfile_type = OBSTACK_CALLOC (&objfile->objfile_obstack,
4381 1, struct objfile_type);
4383 /* Use the objfile architecture to determine basic type properties. */
4384 gdbarch = get_objfile_arch (objfile);
4387 objfile_type->builtin_void
4388 = init_type (TYPE_CODE_VOID, 1,
4392 objfile_type->builtin_char
4393 = init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
4395 | (gdbarch_char_signed (gdbarch) ? 0 : TYPE_FLAG_UNSIGNED)),
4397 objfile_type->builtin_signed_char
4398 = init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
4400 "signed char", objfile);
4401 objfile_type->builtin_unsigned_char
4402 = init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
4404 "unsigned char", objfile);
4405 objfile_type->builtin_short
4406 = init_type (TYPE_CODE_INT,
4407 gdbarch_short_bit (gdbarch) / TARGET_CHAR_BIT,
4408 0, "short", objfile);
4409 objfile_type->builtin_unsigned_short
4410 = init_type (TYPE_CODE_INT,
4411 gdbarch_short_bit (gdbarch) / TARGET_CHAR_BIT,
4412 TYPE_FLAG_UNSIGNED, "unsigned short", objfile);
4413 objfile_type->builtin_int
4414 = init_type (TYPE_CODE_INT,
4415 gdbarch_int_bit (gdbarch) / TARGET_CHAR_BIT,
4417 objfile_type->builtin_unsigned_int
4418 = init_type (TYPE_CODE_INT,
4419 gdbarch_int_bit (gdbarch) / TARGET_CHAR_BIT,
4420 TYPE_FLAG_UNSIGNED, "unsigned int", objfile);
4421 objfile_type->builtin_long
4422 = init_type (TYPE_CODE_INT,
4423 gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT,
4424 0, "long", objfile);
4425 objfile_type->builtin_unsigned_long
4426 = init_type (TYPE_CODE_INT,
4427 gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT,
4428 TYPE_FLAG_UNSIGNED, "unsigned long", objfile);
4429 objfile_type->builtin_long_long
4430 = init_type (TYPE_CODE_INT,
4431 gdbarch_long_long_bit (gdbarch) / TARGET_CHAR_BIT,
4432 0, "long long", objfile);
4433 objfile_type->builtin_unsigned_long_long
4434 = init_type (TYPE_CODE_INT,
4435 gdbarch_long_long_bit (gdbarch) / TARGET_CHAR_BIT,
4436 TYPE_FLAG_UNSIGNED, "unsigned long long", objfile);
4438 objfile_type->builtin_float
4439 = init_type (TYPE_CODE_FLT,
4440 gdbarch_float_bit (gdbarch) / TARGET_CHAR_BIT,
4441 0, "float", objfile);
4442 TYPE_FLOATFORMAT (objfile_type->builtin_float)
4443 = gdbarch_float_format (gdbarch);
4444 objfile_type->builtin_double
4445 = init_type (TYPE_CODE_FLT,
4446 gdbarch_double_bit (gdbarch) / TARGET_CHAR_BIT,
4447 0, "double", objfile);
4448 TYPE_FLOATFORMAT (objfile_type->builtin_double)
4449 = gdbarch_double_format (gdbarch);
4450 objfile_type->builtin_long_double
4451 = init_type (TYPE_CODE_FLT,
4452 gdbarch_long_double_bit (gdbarch) / TARGET_CHAR_BIT,
4453 0, "long double", objfile);
4454 TYPE_FLOATFORMAT (objfile_type->builtin_long_double)
4455 = gdbarch_long_double_format (gdbarch);
4457 /* This type represents a type that was unrecognized in symbol read-in. */
4458 objfile_type->builtin_error
4459 = init_type (TYPE_CODE_ERROR, 0, 0, "<unknown type>", objfile);
4461 /* The following set of types is used for symbols with no
4462 debug information. */
4463 objfile_type->nodebug_text_symbol
4464 = init_type (TYPE_CODE_FUNC, 1, 0,
4465 "<text variable, no debug info>", objfile);
4466 TYPE_TARGET_TYPE (objfile_type->nodebug_text_symbol)
4467 = objfile_type->builtin_int;
4468 objfile_type->nodebug_text_gnu_ifunc_symbol
4469 = init_type (TYPE_CODE_FUNC, 1, TYPE_FLAG_GNU_IFUNC,
4470 "<text gnu-indirect-function variable, no debug info>",
4472 TYPE_TARGET_TYPE (objfile_type->nodebug_text_gnu_ifunc_symbol)
4473 = objfile_type->nodebug_text_symbol;
4474 objfile_type->nodebug_got_plt_symbol
4475 = init_type (TYPE_CODE_PTR, gdbarch_addr_bit (gdbarch) / 8, 0,
4476 "<text from jump slot in .got.plt, no debug info>",
4478 TYPE_TARGET_TYPE (objfile_type->nodebug_got_plt_symbol)
4479 = objfile_type->nodebug_text_symbol;
4480 objfile_type->nodebug_data_symbol
4481 = init_type (TYPE_CODE_INT,
4482 gdbarch_int_bit (gdbarch) / HOST_CHAR_BIT, 0,
4483 "<data variable, no debug info>", objfile);
4484 objfile_type->nodebug_unknown_symbol
4485 = init_type (TYPE_CODE_INT, 1, 0,
4486 "<variable (not text or data), no debug info>", objfile);
4487 objfile_type->nodebug_tls_symbol
4488 = init_type (TYPE_CODE_INT,
4489 gdbarch_int_bit (gdbarch) / HOST_CHAR_BIT, 0,
4490 "<thread local variable, no debug info>", objfile);
4492 /* NOTE: on some targets, addresses and pointers are not necessarily
4496 - gdb's `struct type' always describes the target's
4498 - gdb's `struct value' objects should always hold values in
4500 - gdb's CORE_ADDR values are addresses in the unified virtual
4501 address space that the assembler and linker work with. Thus,
4502 since target_read_memory takes a CORE_ADDR as an argument, it
4503 can access any memory on the target, even if the processor has
4504 separate code and data address spaces.
4506 In this context, objfile_type->builtin_core_addr is a bit odd:
4507 it's a target type for a value the target will never see. It's
4508 only used to hold the values of (typeless) linker symbols, which
4509 are indeed in the unified virtual address space. */
4511 objfile_type->builtin_core_addr
4512 = init_type (TYPE_CODE_INT,
4513 gdbarch_addr_bit (gdbarch) / 8,
4514 TYPE_FLAG_UNSIGNED, "__CORE_ADDR", objfile);
4516 set_objfile_data (objfile, objfile_type_data, objfile_type);
4517 return objfile_type;
4520 extern initialize_file_ftype _initialize_gdbtypes;
4523 _initialize_gdbtypes (void)
4525 gdbtypes_data = gdbarch_data_register_post_init (gdbtypes_post_init);
4526 objfile_type_data = register_objfile_data ();
4528 add_setshow_zuinteger_cmd ("overload", no_class, &overload_debug,
4529 _("Set debugging of C++ overloading."),
4530 _("Show debugging of C++ overloading."),
4531 _("When enabled, ranking of the "
4532 "functions is displayed."),
4534 show_overload_debug,
4535 &setdebuglist, &showdebuglist);
4537 /* Add user knob for controlling resolution of opaque types. */
4538 add_setshow_boolean_cmd ("opaque-type-resolution", class_support,
4539 &opaque_type_resolution,
4540 _("Set resolution of opaque struct/class/union"
4541 " types (if set before loading symbols)."),
4542 _("Show resolution of opaque struct/class/union"
4543 " types (if set before loading symbols)."),
4545 show_opaque_type_resolution,
4546 &setlist, &showlist);
4548 /* Add an option to permit non-strict type checking. */
4549 add_setshow_boolean_cmd ("type", class_support,
4550 &strict_type_checking,
4551 _("Set strict type checking."),
4552 _("Show strict type checking."),
4554 show_strict_type_checking,
4555 &setchecklist, &showchecklist);