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_RANGE:
1627 return !has_static_range (TYPE_RANGE_DATA (type));
1629 case TYPE_CODE_ARRAY:
1631 gdb_assert (TYPE_NFIELDS (type) == 1);
1633 /* The array is dynamic if either the bounds are dynamic,
1634 or the elements it contains have a dynamic contents. */
1635 if (is_dynamic_type (TYPE_INDEX_TYPE (type)))
1637 return is_dynamic_type (TYPE_TARGET_TYPE (type));
1644 static struct type *
1645 resolve_dynamic_range (struct type *dyn_range_type)
1648 struct type *static_range_type;
1649 const struct dynamic_prop *prop;
1650 const struct dwarf2_locexpr_baton *baton;
1651 struct dynamic_prop low_bound, high_bound;
1653 gdb_assert (TYPE_CODE (dyn_range_type) == TYPE_CODE_RANGE);
1655 prop = &TYPE_RANGE_DATA (dyn_range_type)->low;
1656 if (dwarf2_evaluate_property (prop, &value))
1658 low_bound.kind = PROP_CONST;
1659 low_bound.data.const_val = value;
1663 low_bound.kind = PROP_UNDEFINED;
1664 low_bound.data.const_val = 0;
1667 prop = &TYPE_RANGE_DATA (dyn_range_type)->high;
1668 if (dwarf2_evaluate_property (prop, &value))
1670 high_bound.kind = PROP_CONST;
1671 high_bound.data.const_val = value;
1673 if (TYPE_RANGE_DATA (dyn_range_type)->flag_upper_bound_is_count)
1674 high_bound.data.const_val
1675 = low_bound.data.const_val + high_bound.data.const_val - 1;
1679 high_bound.kind = PROP_UNDEFINED;
1680 high_bound.data.const_val = 0;
1683 static_range_type = create_range_type (copy_type (dyn_range_type),
1684 TYPE_TARGET_TYPE (dyn_range_type),
1685 &low_bound, &high_bound);
1686 TYPE_RANGE_DATA (static_range_type)->flag_bound_evaluated = 1;
1687 return static_range_type;
1690 /* Resolves dynamic bound values of an array type TYPE to static ones.
1691 ADDRESS might be needed to resolve the subrange bounds, it is the location
1692 of the associated array. */
1694 static struct type *
1695 resolve_dynamic_array (struct type *type)
1698 struct type *elt_type;
1699 struct type *range_type;
1700 struct type *ary_dim;
1702 gdb_assert (TYPE_CODE (type) == TYPE_CODE_ARRAY);
1705 range_type = check_typedef (TYPE_INDEX_TYPE (elt_type));
1706 range_type = resolve_dynamic_range (range_type);
1708 ary_dim = check_typedef (TYPE_TARGET_TYPE (elt_type));
1710 if (ary_dim != NULL && TYPE_CODE (ary_dim) == TYPE_CODE_ARRAY)
1711 elt_type = resolve_dynamic_array (TYPE_TARGET_TYPE (type));
1713 elt_type = TYPE_TARGET_TYPE (type);
1715 return create_array_type (copy_type (type),
1720 /* See gdbtypes.h */
1723 resolve_dynamic_type (struct type *type, CORE_ADDR addr)
1725 struct type *real_type = check_typedef (type);
1726 struct type *resolved_type = type;
1728 if (!is_dynamic_type (real_type))
1731 switch (TYPE_CODE (type))
1733 case TYPE_CODE_TYPEDEF:
1734 resolved_type = copy_type (type);
1735 TYPE_TARGET_TYPE (resolved_type)
1736 = resolve_dynamic_type (TYPE_TARGET_TYPE (type), addr);
1741 CORE_ADDR target_addr = read_memory_typed_address (addr, type);
1743 resolved_type = copy_type (type);
1744 TYPE_TARGET_TYPE (resolved_type)
1745 = resolve_dynamic_type (TYPE_TARGET_TYPE (type), target_addr);
1749 case TYPE_CODE_ARRAY:
1750 resolved_type = resolve_dynamic_array (type);
1753 case TYPE_CODE_RANGE:
1754 resolved_type = resolve_dynamic_range (type);
1758 return resolved_type;
1761 /* Find the real type of TYPE. This function returns the real type,
1762 after removing all layers of typedefs, and completing opaque or stub
1763 types. Completion changes the TYPE argument, but stripping of
1766 Instance flags (e.g. const/volatile) are preserved as typedefs are
1767 stripped. If necessary a new qualified form of the underlying type
1770 NOTE: This will return a typedef if TYPE_TARGET_TYPE for the typedef has
1771 not been computed and we're either in the middle of reading symbols, or
1772 there was no name for the typedef in the debug info.
1774 NOTE: Lookup of opaque types can throw errors for invalid symbol files.
1775 QUITs in the symbol reading code can also throw.
1776 Thus this function can throw an exception.
1778 If TYPE is a TYPE_CODE_TYPEDEF, its length is updated to the length of
1781 If this is a stubbed struct (i.e. declared as struct foo *), see if
1782 we can find a full definition in some other file. If so, copy this
1783 definition, so we can use it in future. There used to be a comment
1784 (but not any code) that if we don't find a full definition, we'd
1785 set a flag so we don't spend time in the future checking the same
1786 type. That would be a mistake, though--we might load in more
1787 symbols which contain a full definition for the type. */
1790 check_typedef (struct type *type)
1792 struct type *orig_type = type;
1793 /* While we're removing typedefs, we don't want to lose qualifiers.
1794 E.g., const/volatile. */
1795 int instance_flags = TYPE_INSTANCE_FLAGS (type);
1799 while (TYPE_CODE (type) == TYPE_CODE_TYPEDEF)
1801 if (!TYPE_TARGET_TYPE (type))
1806 /* It is dangerous to call lookup_symbol if we are currently
1807 reading a symtab. Infinite recursion is one danger. */
1808 if (currently_reading_symtab)
1809 return make_qualified_type (type, instance_flags, NULL);
1811 name = type_name_no_tag (type);
1812 /* FIXME: shouldn't we separately check the TYPE_NAME and
1813 the TYPE_TAG_NAME, and look in STRUCT_DOMAIN and/or
1814 VAR_DOMAIN as appropriate? (this code was written before
1815 TYPE_NAME and TYPE_TAG_NAME were separate). */
1818 stub_noname_complaint ();
1819 return make_qualified_type (type, instance_flags, NULL);
1821 sym = lookup_symbol (name, 0, STRUCT_DOMAIN, 0);
1823 TYPE_TARGET_TYPE (type) = SYMBOL_TYPE (sym);
1824 else /* TYPE_CODE_UNDEF */
1825 TYPE_TARGET_TYPE (type) = alloc_type_arch (get_type_arch (type));
1827 type = TYPE_TARGET_TYPE (type);
1829 /* Preserve the instance flags as we traverse down the typedef chain.
1831 Handling address spaces/classes is nasty, what do we do if there's a
1833 E.g., what if an outer typedef marks the type as class_1 and an inner
1834 typedef marks the type as class_2?
1835 This is the wrong place to do such error checking. We leave it to
1836 the code that created the typedef in the first place to flag the
1837 error. We just pick the outer address space (akin to letting the
1838 outer cast in a chain of casting win), instead of assuming
1839 "it can't happen". */
1841 const int ALL_SPACES = (TYPE_INSTANCE_FLAG_CODE_SPACE
1842 | TYPE_INSTANCE_FLAG_DATA_SPACE);
1843 const int ALL_CLASSES = TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL;
1844 int new_instance_flags = TYPE_INSTANCE_FLAGS (type);
1846 /* Treat code vs data spaces and address classes separately. */
1847 if ((instance_flags & ALL_SPACES) != 0)
1848 new_instance_flags &= ~ALL_SPACES;
1849 if ((instance_flags & ALL_CLASSES) != 0)
1850 new_instance_flags &= ~ALL_CLASSES;
1852 instance_flags |= new_instance_flags;
1856 /* If this is a struct/class/union with no fields, then check
1857 whether a full definition exists somewhere else. This is for
1858 systems where a type definition with no fields is issued for such
1859 types, instead of identifying them as stub types in the first
1862 if (TYPE_IS_OPAQUE (type)
1863 && opaque_type_resolution
1864 && !currently_reading_symtab)
1866 const char *name = type_name_no_tag (type);
1867 struct type *newtype;
1871 stub_noname_complaint ();
1872 return make_qualified_type (type, instance_flags, NULL);
1874 newtype = lookup_transparent_type (name);
1878 /* If the resolved type and the stub are in the same
1879 objfile, then replace the stub type with the real deal.
1880 But if they're in separate objfiles, leave the stub
1881 alone; we'll just look up the transparent type every time
1882 we call check_typedef. We can't create pointers between
1883 types allocated to different objfiles, since they may
1884 have different lifetimes. Trying to copy NEWTYPE over to
1885 TYPE's objfile is pointless, too, since you'll have to
1886 move over any other types NEWTYPE refers to, which could
1887 be an unbounded amount of stuff. */
1888 if (TYPE_OBJFILE (newtype) == TYPE_OBJFILE (type))
1889 type = make_qualified_type (newtype,
1890 TYPE_INSTANCE_FLAGS (type),
1896 /* Otherwise, rely on the stub flag being set for opaque/stubbed
1898 else if (TYPE_STUB (type) && !currently_reading_symtab)
1900 const char *name = type_name_no_tag (type);
1901 /* FIXME: shouldn't we separately check the TYPE_NAME and the
1902 TYPE_TAG_NAME, and look in STRUCT_DOMAIN and/or VAR_DOMAIN
1903 as appropriate? (this code was written before TYPE_NAME and
1904 TYPE_TAG_NAME were separate). */
1909 stub_noname_complaint ();
1910 return make_qualified_type (type, instance_flags, NULL);
1912 sym = lookup_symbol (name, 0, STRUCT_DOMAIN, 0);
1915 /* Same as above for opaque types, we can replace the stub
1916 with the complete type only if they are in the same
1918 if (TYPE_OBJFILE (SYMBOL_TYPE(sym)) == TYPE_OBJFILE (type))
1919 type = make_qualified_type (SYMBOL_TYPE (sym),
1920 TYPE_INSTANCE_FLAGS (type),
1923 type = SYMBOL_TYPE (sym);
1927 if (TYPE_TARGET_STUB (type))
1929 struct type *range_type;
1930 struct type *target_type = check_typedef (TYPE_TARGET_TYPE (type));
1932 if (TYPE_STUB (target_type) || TYPE_TARGET_STUB (target_type))
1934 /* Nothing we can do. */
1936 else if (TYPE_CODE (type) == TYPE_CODE_RANGE)
1938 TYPE_LENGTH (type) = TYPE_LENGTH (target_type);
1939 TYPE_TARGET_STUB (type) = 0;
1943 type = make_qualified_type (type, instance_flags, NULL);
1945 /* Cache TYPE_LENGTH for future use. */
1946 TYPE_LENGTH (orig_type) = TYPE_LENGTH (type);
1951 /* Parse a type expression in the string [P..P+LENGTH). If an error
1952 occurs, silently return a void type. */
1954 static struct type *
1955 safe_parse_type (struct gdbarch *gdbarch, char *p, int length)
1957 struct ui_file *saved_gdb_stderr;
1958 struct type *type = NULL; /* Initialize to keep gcc happy. */
1959 volatile struct gdb_exception except;
1961 /* Suppress error messages. */
1962 saved_gdb_stderr = gdb_stderr;
1963 gdb_stderr = ui_file_new ();
1965 /* Call parse_and_eval_type() without fear of longjmp()s. */
1966 TRY_CATCH (except, RETURN_MASK_ERROR)
1968 type = parse_and_eval_type (p, length);
1971 if (except.reason < 0)
1972 type = builtin_type (gdbarch)->builtin_void;
1974 /* Stop suppressing error messages. */
1975 ui_file_delete (gdb_stderr);
1976 gdb_stderr = saved_gdb_stderr;
1981 /* Ugly hack to convert method stubs into method types.
1983 He ain't kiddin'. This demangles the name of the method into a
1984 string including argument types, parses out each argument type,
1985 generates a string casting a zero to that type, evaluates the
1986 string, and stuffs the resulting type into an argtype vector!!!
1987 Then it knows the type of the whole function (including argument
1988 types for overloading), which info used to be in the stab's but was
1989 removed to hack back the space required for them. */
1992 check_stub_method (struct type *type, int method_id, int signature_id)
1994 struct gdbarch *gdbarch = get_type_arch (type);
1996 char *mangled_name = gdb_mangle_name (type, method_id, signature_id);
1997 char *demangled_name = gdb_demangle (mangled_name,
1998 DMGL_PARAMS | DMGL_ANSI);
1999 char *argtypetext, *p;
2000 int depth = 0, argcount = 1;
2001 struct field *argtypes;
2004 /* Make sure we got back a function string that we can use. */
2006 p = strchr (demangled_name, '(');
2010 if (demangled_name == NULL || p == NULL)
2011 error (_("Internal: Cannot demangle mangled name `%s'."),
2014 /* Now, read in the parameters that define this type. */
2019 if (*p == '(' || *p == '<')
2023 else if (*p == ')' || *p == '>')
2027 else if (*p == ',' && depth == 0)
2035 /* If we read one argument and it was ``void'', don't count it. */
2036 if (strncmp (argtypetext, "(void)", 6) == 0)
2039 /* We need one extra slot, for the THIS pointer. */
2041 argtypes = (struct field *)
2042 TYPE_ALLOC (type, (argcount + 1) * sizeof (struct field));
2045 /* Add THIS pointer for non-static methods. */
2046 f = TYPE_FN_FIELDLIST1 (type, method_id);
2047 if (TYPE_FN_FIELD_STATIC_P (f, signature_id))
2051 argtypes[0].type = lookup_pointer_type (type);
2055 if (*p != ')') /* () means no args, skip while. */
2060 if (depth <= 0 && (*p == ',' || *p == ')'))
2062 /* Avoid parsing of ellipsis, they will be handled below.
2063 Also avoid ``void'' as above. */
2064 if (strncmp (argtypetext, "...", p - argtypetext) != 0
2065 && strncmp (argtypetext, "void", p - argtypetext) != 0)
2067 argtypes[argcount].type =
2068 safe_parse_type (gdbarch, argtypetext, p - argtypetext);
2071 argtypetext = p + 1;
2074 if (*p == '(' || *p == '<')
2078 else if (*p == ')' || *p == '>')
2087 TYPE_FN_FIELD_PHYSNAME (f, signature_id) = mangled_name;
2089 /* Now update the old "stub" type into a real type. */
2090 mtype = TYPE_FN_FIELD_TYPE (f, signature_id);
2091 TYPE_DOMAIN_TYPE (mtype) = type;
2092 TYPE_FIELDS (mtype) = argtypes;
2093 TYPE_NFIELDS (mtype) = argcount;
2094 TYPE_STUB (mtype) = 0;
2095 TYPE_FN_FIELD_STUB (f, signature_id) = 0;
2097 TYPE_VARARGS (mtype) = 1;
2099 xfree (demangled_name);
2102 /* This is the external interface to check_stub_method, above. This
2103 function unstubs all of the signatures for TYPE's METHOD_ID method
2104 name. After calling this function TYPE_FN_FIELD_STUB will be
2105 cleared for each signature and TYPE_FN_FIELDLIST_NAME will be
2108 This function unfortunately can not die until stabs do. */
2111 check_stub_method_group (struct type *type, int method_id)
2113 int len = TYPE_FN_FIELDLIST_LENGTH (type, method_id);
2114 struct fn_field *f = TYPE_FN_FIELDLIST1 (type, method_id);
2115 int j, found_stub = 0;
2117 for (j = 0; j < len; j++)
2118 if (TYPE_FN_FIELD_STUB (f, j))
2121 check_stub_method (type, method_id, j);
2124 /* GNU v3 methods with incorrect names were corrected when we read
2125 in type information, because it was cheaper to do it then. The
2126 only GNU v2 methods with incorrect method names are operators and
2127 destructors; destructors were also corrected when we read in type
2130 Therefore the only thing we need to handle here are v2 operator
2132 if (found_stub && strncmp (TYPE_FN_FIELD_PHYSNAME (f, 0), "_Z", 2) != 0)
2135 char dem_opname[256];
2137 ret = cplus_demangle_opname (TYPE_FN_FIELDLIST_NAME (type,
2139 dem_opname, DMGL_ANSI);
2141 ret = cplus_demangle_opname (TYPE_FN_FIELDLIST_NAME (type,
2145 TYPE_FN_FIELDLIST_NAME (type, method_id) = xstrdup (dem_opname);
2149 /* Ensure it is in .rodata (if available) by workarounding GCC PR 44690. */
2150 const struct cplus_struct_type cplus_struct_default = { };
2153 allocate_cplus_struct_type (struct type *type)
2155 if (HAVE_CPLUS_STRUCT (type))
2156 /* Structure was already allocated. Nothing more to do. */
2159 TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_CPLUS_STUFF;
2160 TYPE_RAW_CPLUS_SPECIFIC (type) = (struct cplus_struct_type *)
2161 TYPE_ALLOC (type, sizeof (struct cplus_struct_type));
2162 *(TYPE_RAW_CPLUS_SPECIFIC (type)) = cplus_struct_default;
2165 const struct gnat_aux_type gnat_aux_default =
2168 /* Set the TYPE's type-specific kind to TYPE_SPECIFIC_GNAT_STUFF,
2169 and allocate the associated gnat-specific data. The gnat-specific
2170 data is also initialized to gnat_aux_default. */
2173 allocate_gnat_aux_type (struct type *type)
2175 TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_GNAT_STUFF;
2176 TYPE_GNAT_SPECIFIC (type) = (struct gnat_aux_type *)
2177 TYPE_ALLOC (type, sizeof (struct gnat_aux_type));
2178 *(TYPE_GNAT_SPECIFIC (type)) = gnat_aux_default;
2181 /* Helper function to initialize the standard scalar types.
2183 If NAME is non-NULL, then it is used to initialize the type name.
2184 Note that NAME is not copied; it is required to have a lifetime at
2185 least as long as OBJFILE. */
2188 init_type (enum type_code code, int length, int flags,
2189 const char *name, struct objfile *objfile)
2193 type = alloc_type (objfile);
2194 TYPE_CODE (type) = code;
2195 TYPE_LENGTH (type) = length;
2197 gdb_assert (!(flags & (TYPE_FLAG_MIN - 1)));
2198 if (flags & TYPE_FLAG_UNSIGNED)
2199 TYPE_UNSIGNED (type) = 1;
2200 if (flags & TYPE_FLAG_NOSIGN)
2201 TYPE_NOSIGN (type) = 1;
2202 if (flags & TYPE_FLAG_STUB)
2203 TYPE_STUB (type) = 1;
2204 if (flags & TYPE_FLAG_TARGET_STUB)
2205 TYPE_TARGET_STUB (type) = 1;
2206 if (flags & TYPE_FLAG_STATIC)
2207 TYPE_STATIC (type) = 1;
2208 if (flags & TYPE_FLAG_PROTOTYPED)
2209 TYPE_PROTOTYPED (type) = 1;
2210 if (flags & TYPE_FLAG_INCOMPLETE)
2211 TYPE_INCOMPLETE (type) = 1;
2212 if (flags & TYPE_FLAG_VARARGS)
2213 TYPE_VARARGS (type) = 1;
2214 if (flags & TYPE_FLAG_VECTOR)
2215 TYPE_VECTOR (type) = 1;
2216 if (flags & TYPE_FLAG_STUB_SUPPORTED)
2217 TYPE_STUB_SUPPORTED (type) = 1;
2218 if (flags & TYPE_FLAG_FIXED_INSTANCE)
2219 TYPE_FIXED_INSTANCE (type) = 1;
2220 if (flags & TYPE_FLAG_GNU_IFUNC)
2221 TYPE_GNU_IFUNC (type) = 1;
2223 TYPE_NAME (type) = name;
2227 if (name && strcmp (name, "char") == 0)
2228 TYPE_NOSIGN (type) = 1;
2232 case TYPE_CODE_STRUCT:
2233 case TYPE_CODE_UNION:
2234 case TYPE_CODE_NAMESPACE:
2235 INIT_CPLUS_SPECIFIC (type);
2238 TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_FLOATFORMAT;
2240 case TYPE_CODE_FUNC:
2241 INIT_FUNC_SPECIFIC (type);
2247 /* Queries on types. */
2250 can_dereference (struct type *t)
2252 /* FIXME: Should we return true for references as well as
2257 && TYPE_CODE (t) == TYPE_CODE_PTR
2258 && TYPE_CODE (TYPE_TARGET_TYPE (t)) != TYPE_CODE_VOID);
2262 is_integral_type (struct type *t)
2267 && ((TYPE_CODE (t) == TYPE_CODE_INT)
2268 || (TYPE_CODE (t) == TYPE_CODE_ENUM)
2269 || (TYPE_CODE (t) == TYPE_CODE_FLAGS)
2270 || (TYPE_CODE (t) == TYPE_CODE_CHAR)
2271 || (TYPE_CODE (t) == TYPE_CODE_RANGE)
2272 || (TYPE_CODE (t) == TYPE_CODE_BOOL)));
2275 /* Return true if TYPE is scalar. */
2278 is_scalar_type (struct type *type)
2280 CHECK_TYPEDEF (type);
2282 switch (TYPE_CODE (type))
2284 case TYPE_CODE_ARRAY:
2285 case TYPE_CODE_STRUCT:
2286 case TYPE_CODE_UNION:
2288 case TYPE_CODE_STRING:
2295 /* Return true if T is scalar, or a composite type which in practice has
2296 the memory layout of a scalar type. E.g., an array or struct with only
2297 one scalar element inside it, or a union with only scalar elements. */
2300 is_scalar_type_recursive (struct type *t)
2304 if (is_scalar_type (t))
2306 /* Are we dealing with an array or string of known dimensions? */
2307 else if ((TYPE_CODE (t) == TYPE_CODE_ARRAY
2308 || TYPE_CODE (t) == TYPE_CODE_STRING) && TYPE_NFIELDS (t) == 1
2309 && TYPE_CODE (TYPE_INDEX_TYPE (t)) == TYPE_CODE_RANGE)
2311 LONGEST low_bound, high_bound;
2312 struct type *elt_type = check_typedef (TYPE_TARGET_TYPE (t));
2314 get_discrete_bounds (TYPE_INDEX_TYPE (t), &low_bound, &high_bound);
2316 return high_bound == low_bound && is_scalar_type_recursive (elt_type);
2318 /* Are we dealing with a struct with one element? */
2319 else if (TYPE_CODE (t) == TYPE_CODE_STRUCT && TYPE_NFIELDS (t) == 1)
2320 return is_scalar_type_recursive (TYPE_FIELD_TYPE (t, 0));
2321 else if (TYPE_CODE (t) == TYPE_CODE_UNION)
2323 int i, n = TYPE_NFIELDS (t);
2325 /* If all elements of the union are scalar, then the union is scalar. */
2326 for (i = 0; i < n; i++)
2327 if (!is_scalar_type_recursive (TYPE_FIELD_TYPE (t, i)))
2336 /* A helper function which returns true if types A and B represent the
2337 "same" class type. This is true if the types have the same main
2338 type, or the same name. */
2341 class_types_same_p (const struct type *a, const struct type *b)
2343 return (TYPE_MAIN_TYPE (a) == TYPE_MAIN_TYPE (b)
2344 || (TYPE_NAME (a) && TYPE_NAME (b)
2345 && !strcmp (TYPE_NAME (a), TYPE_NAME (b))));
2348 /* If BASE is an ancestor of DCLASS return the distance between them.
2349 otherwise return -1;
2353 class B: public A {};
2354 class C: public B {};
2357 distance_to_ancestor (A, A, 0) = 0
2358 distance_to_ancestor (A, B, 0) = 1
2359 distance_to_ancestor (A, C, 0) = 2
2360 distance_to_ancestor (A, D, 0) = 3
2362 If PUBLIC is 1 then only public ancestors are considered,
2363 and the function returns the distance only if BASE is a public ancestor
2367 distance_to_ancestor (A, D, 1) = -1. */
2370 distance_to_ancestor (struct type *base, struct type *dclass, int public)
2375 CHECK_TYPEDEF (base);
2376 CHECK_TYPEDEF (dclass);
2378 if (class_types_same_p (base, dclass))
2381 for (i = 0; i < TYPE_N_BASECLASSES (dclass); i++)
2383 if (public && ! BASETYPE_VIA_PUBLIC (dclass, i))
2386 d = distance_to_ancestor (base, TYPE_BASECLASS (dclass, i), public);
2394 /* Check whether BASE is an ancestor or base class or DCLASS
2395 Return 1 if so, and 0 if not.
2396 Note: If BASE and DCLASS are of the same type, this function
2397 will return 1. So for some class A, is_ancestor (A, A) will
2401 is_ancestor (struct type *base, struct type *dclass)
2403 return distance_to_ancestor (base, dclass, 0) >= 0;
2406 /* Like is_ancestor, but only returns true when BASE is a public
2407 ancestor of DCLASS. */
2410 is_public_ancestor (struct type *base, struct type *dclass)
2412 return distance_to_ancestor (base, dclass, 1) >= 0;
2415 /* A helper function for is_unique_ancestor. */
2418 is_unique_ancestor_worker (struct type *base, struct type *dclass,
2420 const gdb_byte *valaddr, int embedded_offset,
2421 CORE_ADDR address, struct value *val)
2425 CHECK_TYPEDEF (base);
2426 CHECK_TYPEDEF (dclass);
2428 for (i = 0; i < TYPE_N_BASECLASSES (dclass) && count < 2; ++i)
2433 iter = check_typedef (TYPE_BASECLASS (dclass, i));
2435 this_offset = baseclass_offset (dclass, i, valaddr, embedded_offset,
2438 if (class_types_same_p (base, iter))
2440 /* If this is the first subclass, set *OFFSET and set count
2441 to 1. Otherwise, if this is at the same offset as
2442 previous instances, do nothing. Otherwise, increment
2446 *offset = this_offset;
2449 else if (this_offset == *offset)
2457 count += is_unique_ancestor_worker (base, iter, offset,
2459 embedded_offset + this_offset,
2466 /* Like is_ancestor, but only returns true if BASE is a unique base
2467 class of the type of VAL. */
2470 is_unique_ancestor (struct type *base, struct value *val)
2474 return is_unique_ancestor_worker (base, value_type (val), &offset,
2475 value_contents_for_printing (val),
2476 value_embedded_offset (val),
2477 value_address (val), val) == 1;
2481 /* Overload resolution. */
2483 /* Return the sum of the rank of A with the rank of B. */
2486 sum_ranks (struct rank a, struct rank b)
2489 c.rank = a.rank + b.rank;
2490 c.subrank = a.subrank + b.subrank;
2494 /* Compare rank A and B and return:
2496 1 if a is better than b
2497 -1 if b is better than a. */
2500 compare_ranks (struct rank a, struct rank b)
2502 if (a.rank == b.rank)
2504 if (a.subrank == b.subrank)
2506 if (a.subrank < b.subrank)
2508 if (a.subrank > b.subrank)
2512 if (a.rank < b.rank)
2515 /* a.rank > b.rank */
2519 /* Functions for overload resolution begin here. */
2521 /* Compare two badness vectors A and B and return the result.
2522 0 => A and B are identical
2523 1 => A and B are incomparable
2524 2 => A is better than B
2525 3 => A is worse than B */
2528 compare_badness (struct badness_vector *a, struct badness_vector *b)
2532 short found_pos = 0; /* any positives in c? */
2533 short found_neg = 0; /* any negatives in c? */
2535 /* differing lengths => incomparable */
2536 if (a->length != b->length)
2539 /* Subtract b from a */
2540 for (i = 0; i < a->length; i++)
2542 tmp = compare_ranks (b->rank[i], a->rank[i]);
2552 return 1; /* incomparable */
2554 return 3; /* A > B */
2560 return 2; /* A < B */
2562 return 0; /* A == B */
2566 /* Rank a function by comparing its parameter types (PARMS, length
2567 NPARMS), to the types of an argument list (ARGS, length NARGS).
2568 Return a pointer to a badness vector. This has NARGS + 1
2571 struct badness_vector *
2572 rank_function (struct type **parms, int nparms,
2573 struct value **args, int nargs)
2576 struct badness_vector *bv;
2577 int min_len = nparms < nargs ? nparms : nargs;
2579 bv = xmalloc (sizeof (struct badness_vector));
2580 bv->length = nargs + 1; /* add 1 for the length-match rank. */
2581 bv->rank = XNEWVEC (struct rank, nargs + 1);
2583 /* First compare the lengths of the supplied lists.
2584 If there is a mismatch, set it to a high value. */
2586 /* pai/1997-06-03 FIXME: when we have debug info about default
2587 arguments and ellipsis parameter lists, we should consider those
2588 and rank the length-match more finely. */
2590 LENGTH_MATCH (bv) = (nargs != nparms)
2591 ? LENGTH_MISMATCH_BADNESS
2592 : EXACT_MATCH_BADNESS;
2594 /* Now rank all the parameters of the candidate function. */
2595 for (i = 1; i <= min_len; i++)
2596 bv->rank[i] = rank_one_type (parms[i - 1], value_type (args[i - 1]),
2599 /* If more arguments than parameters, add dummy entries. */
2600 for (i = min_len + 1; i <= nargs; i++)
2601 bv->rank[i] = TOO_FEW_PARAMS_BADNESS;
2606 /* Compare the names of two integer types, assuming that any sign
2607 qualifiers have been checked already. We do it this way because
2608 there may be an "int" in the name of one of the types. */
2611 integer_types_same_name_p (const char *first, const char *second)
2613 int first_p, second_p;
2615 /* If both are shorts, return 1; if neither is a short, keep
2617 first_p = (strstr (first, "short") != NULL);
2618 second_p = (strstr (second, "short") != NULL);
2619 if (first_p && second_p)
2621 if (first_p || second_p)
2624 /* Likewise for long. */
2625 first_p = (strstr (first, "long") != NULL);
2626 second_p = (strstr (second, "long") != NULL);
2627 if (first_p && second_p)
2629 if (first_p || second_p)
2632 /* Likewise for char. */
2633 first_p = (strstr (first, "char") != NULL);
2634 second_p = (strstr (second, "char") != NULL);
2635 if (first_p && second_p)
2637 if (first_p || second_p)
2640 /* They must both be ints. */
2644 /* Compares type A to type B returns 1 if the represent the same type
2648 types_equal (struct type *a, struct type *b)
2650 /* Identical type pointers. */
2651 /* However, this still doesn't catch all cases of same type for b
2652 and a. The reason is that builtin types are different from
2653 the same ones constructed from the object. */
2657 /* Resolve typedefs */
2658 if (TYPE_CODE (a) == TYPE_CODE_TYPEDEF)
2659 a = check_typedef (a);
2660 if (TYPE_CODE (b) == TYPE_CODE_TYPEDEF)
2661 b = check_typedef (b);
2663 /* If after resolving typedefs a and b are not of the same type
2664 code then they are not equal. */
2665 if (TYPE_CODE (a) != TYPE_CODE (b))
2668 /* If a and b are both pointers types or both reference types then
2669 they are equal of the same type iff the objects they refer to are
2670 of the same type. */
2671 if (TYPE_CODE (a) == TYPE_CODE_PTR
2672 || TYPE_CODE (a) == TYPE_CODE_REF)
2673 return types_equal (TYPE_TARGET_TYPE (a),
2674 TYPE_TARGET_TYPE (b));
2676 /* Well, damnit, if the names are exactly the same, I'll say they
2677 are exactly the same. This happens when we generate method
2678 stubs. The types won't point to the same address, but they
2679 really are the same. */
2681 if (TYPE_NAME (a) && TYPE_NAME (b)
2682 && strcmp (TYPE_NAME (a), TYPE_NAME (b)) == 0)
2685 /* Check if identical after resolving typedefs. */
2689 /* Two function types are equal if their argument and return types
2691 if (TYPE_CODE (a) == TYPE_CODE_FUNC)
2695 if (TYPE_NFIELDS (a) != TYPE_NFIELDS (b))
2698 if (!types_equal (TYPE_TARGET_TYPE (a), TYPE_TARGET_TYPE (b)))
2701 for (i = 0; i < TYPE_NFIELDS (a); ++i)
2702 if (!types_equal (TYPE_FIELD_TYPE (a, i), TYPE_FIELD_TYPE (b, i)))
2711 /* Deep comparison of types. */
2713 /* An entry in the type-equality bcache. */
2715 typedef struct type_equality_entry
2717 struct type *type1, *type2;
2718 } type_equality_entry_d;
2720 DEF_VEC_O (type_equality_entry_d);
2722 /* A helper function to compare two strings. Returns 1 if they are
2723 the same, 0 otherwise. Handles NULLs properly. */
2726 compare_maybe_null_strings (const char *s, const char *t)
2728 if (s == NULL && t != NULL)
2730 else if (s != NULL && t == NULL)
2732 else if (s == NULL && t== NULL)
2734 return strcmp (s, t) == 0;
2737 /* A helper function for check_types_worklist that checks two types for
2738 "deep" equality. Returns non-zero if the types are considered the
2739 same, zero otherwise. */
2742 check_types_equal (struct type *type1, struct type *type2,
2743 VEC (type_equality_entry_d) **worklist)
2745 CHECK_TYPEDEF (type1);
2746 CHECK_TYPEDEF (type2);
2751 if (TYPE_CODE (type1) != TYPE_CODE (type2)
2752 || TYPE_LENGTH (type1) != TYPE_LENGTH (type2)
2753 || TYPE_UNSIGNED (type1) != TYPE_UNSIGNED (type2)
2754 || TYPE_NOSIGN (type1) != TYPE_NOSIGN (type2)
2755 || TYPE_VARARGS (type1) != TYPE_VARARGS (type2)
2756 || TYPE_VECTOR (type1) != TYPE_VECTOR (type2)
2757 || TYPE_NOTTEXT (type1) != TYPE_NOTTEXT (type2)
2758 || TYPE_INSTANCE_FLAGS (type1) != TYPE_INSTANCE_FLAGS (type2)
2759 || TYPE_NFIELDS (type1) != TYPE_NFIELDS (type2))
2762 if (!compare_maybe_null_strings (TYPE_TAG_NAME (type1),
2763 TYPE_TAG_NAME (type2)))
2765 if (!compare_maybe_null_strings (TYPE_NAME (type1), TYPE_NAME (type2)))
2768 if (TYPE_CODE (type1) == TYPE_CODE_RANGE)
2770 if (memcmp (TYPE_RANGE_DATA (type1), TYPE_RANGE_DATA (type2),
2771 sizeof (*TYPE_RANGE_DATA (type1))) != 0)
2778 for (i = 0; i < TYPE_NFIELDS (type1); ++i)
2780 const struct field *field1 = &TYPE_FIELD (type1, i);
2781 const struct field *field2 = &TYPE_FIELD (type2, i);
2782 struct type_equality_entry entry;
2784 if (FIELD_ARTIFICIAL (*field1) != FIELD_ARTIFICIAL (*field2)
2785 || FIELD_BITSIZE (*field1) != FIELD_BITSIZE (*field2)
2786 || FIELD_LOC_KIND (*field1) != FIELD_LOC_KIND (*field2))
2788 if (!compare_maybe_null_strings (FIELD_NAME (*field1),
2789 FIELD_NAME (*field2)))
2791 switch (FIELD_LOC_KIND (*field1))
2793 case FIELD_LOC_KIND_BITPOS:
2794 if (FIELD_BITPOS (*field1) != FIELD_BITPOS (*field2))
2797 case FIELD_LOC_KIND_ENUMVAL:
2798 if (FIELD_ENUMVAL (*field1) != FIELD_ENUMVAL (*field2))
2801 case FIELD_LOC_KIND_PHYSADDR:
2802 if (FIELD_STATIC_PHYSADDR (*field1)
2803 != FIELD_STATIC_PHYSADDR (*field2))
2806 case FIELD_LOC_KIND_PHYSNAME:
2807 if (!compare_maybe_null_strings (FIELD_STATIC_PHYSNAME (*field1),
2808 FIELD_STATIC_PHYSNAME (*field2)))
2811 case FIELD_LOC_KIND_DWARF_BLOCK:
2813 struct dwarf2_locexpr_baton *block1, *block2;
2815 block1 = FIELD_DWARF_BLOCK (*field1);
2816 block2 = FIELD_DWARF_BLOCK (*field2);
2817 if (block1->per_cu != block2->per_cu
2818 || block1->size != block2->size
2819 || memcmp (block1->data, block2->data, block1->size) != 0)
2824 internal_error (__FILE__, __LINE__, _("Unsupported field kind "
2825 "%d by check_types_equal"),
2826 FIELD_LOC_KIND (*field1));
2829 entry.type1 = FIELD_TYPE (*field1);
2830 entry.type2 = FIELD_TYPE (*field2);
2831 VEC_safe_push (type_equality_entry_d, *worklist, &entry);
2835 if (TYPE_TARGET_TYPE (type1) != NULL)
2837 struct type_equality_entry entry;
2839 if (TYPE_TARGET_TYPE (type2) == NULL)
2842 entry.type1 = TYPE_TARGET_TYPE (type1);
2843 entry.type2 = TYPE_TARGET_TYPE (type2);
2844 VEC_safe_push (type_equality_entry_d, *worklist, &entry);
2846 else if (TYPE_TARGET_TYPE (type2) != NULL)
2852 /* Check types on a worklist for equality. Returns zero if any pair
2853 is not equal, non-zero if they are all considered equal. */
2856 check_types_worklist (VEC (type_equality_entry_d) **worklist,
2857 struct bcache *cache)
2859 while (!VEC_empty (type_equality_entry_d, *worklist))
2861 struct type_equality_entry entry;
2864 entry = *VEC_last (type_equality_entry_d, *worklist);
2865 VEC_pop (type_equality_entry_d, *worklist);
2867 /* If the type pair has already been visited, we know it is
2869 bcache_full (&entry, sizeof (entry), cache, &added);
2873 if (check_types_equal (entry.type1, entry.type2, worklist) == 0)
2880 /* Return non-zero if types TYPE1 and TYPE2 are equal, as determined by a
2881 "deep comparison". Otherwise return zero. */
2884 types_deeply_equal (struct type *type1, struct type *type2)
2886 volatile struct gdb_exception except;
2888 struct bcache *cache;
2889 VEC (type_equality_entry_d) *worklist = NULL;
2890 struct type_equality_entry entry;
2892 gdb_assert (type1 != NULL && type2 != NULL);
2894 /* Early exit for the simple case. */
2898 cache = bcache_xmalloc (NULL, NULL);
2900 entry.type1 = type1;
2901 entry.type2 = type2;
2902 VEC_safe_push (type_equality_entry_d, worklist, &entry);
2904 TRY_CATCH (except, RETURN_MASK_ALL)
2906 result = check_types_worklist (&worklist, cache);
2908 /* check_types_worklist calls several nested helper functions,
2909 some of which can raise a GDB Exception, so we just check
2910 and rethrow here. If there is a GDB exception, a comparison
2911 is not capable (or trusted), so exit. */
2912 bcache_xfree (cache);
2913 VEC_free (type_equality_entry_d, worklist);
2914 /* Rethrow if there was a problem. */
2915 if (except.reason < 0)
2916 throw_exception (except);
2921 /* Compare one type (PARM) for compatibility with another (ARG).
2922 * PARM is intended to be the parameter type of a function; and
2923 * ARG is the supplied argument's type. This function tests if
2924 * the latter can be converted to the former.
2925 * VALUE is the argument's value or NULL if none (or called recursively)
2927 * Return 0 if they are identical types;
2928 * Otherwise, return an integer which corresponds to how compatible
2929 * PARM is to ARG. The higher the return value, the worse the match.
2930 * Generally the "bad" conversions are all uniformly assigned a 100. */
2933 rank_one_type (struct type *parm, struct type *arg, struct value *value)
2935 struct rank rank = {0,0};
2937 if (types_equal (parm, arg))
2938 return EXACT_MATCH_BADNESS;
2940 /* Resolve typedefs */
2941 if (TYPE_CODE (parm) == TYPE_CODE_TYPEDEF)
2942 parm = check_typedef (parm);
2943 if (TYPE_CODE (arg) == TYPE_CODE_TYPEDEF)
2944 arg = check_typedef (arg);
2946 /* See through references, since we can almost make non-references
2948 if (TYPE_CODE (arg) == TYPE_CODE_REF)
2949 return (sum_ranks (rank_one_type (parm, TYPE_TARGET_TYPE (arg), NULL),
2950 REFERENCE_CONVERSION_BADNESS));
2951 if (TYPE_CODE (parm) == TYPE_CODE_REF)
2952 return (sum_ranks (rank_one_type (TYPE_TARGET_TYPE (parm), arg, NULL),
2953 REFERENCE_CONVERSION_BADNESS));
2955 /* Debugging only. */
2956 fprintf_filtered (gdb_stderr,
2957 "------ Arg is %s [%d], parm is %s [%d]\n",
2958 TYPE_NAME (arg), TYPE_CODE (arg),
2959 TYPE_NAME (parm), TYPE_CODE (parm));
2961 /* x -> y means arg of type x being supplied for parameter of type y. */
2963 switch (TYPE_CODE (parm))
2966 switch (TYPE_CODE (arg))
2970 /* Allowed pointer conversions are:
2971 (a) pointer to void-pointer conversion. */
2972 if (TYPE_CODE (TYPE_TARGET_TYPE (parm)) == TYPE_CODE_VOID)
2973 return VOID_PTR_CONVERSION_BADNESS;
2975 /* (b) pointer to ancestor-pointer conversion. */
2976 rank.subrank = distance_to_ancestor (TYPE_TARGET_TYPE (parm),
2977 TYPE_TARGET_TYPE (arg),
2979 if (rank.subrank >= 0)
2980 return sum_ranks (BASE_PTR_CONVERSION_BADNESS, rank);
2982 return INCOMPATIBLE_TYPE_BADNESS;
2983 case TYPE_CODE_ARRAY:
2984 if (types_equal (TYPE_TARGET_TYPE (parm),
2985 TYPE_TARGET_TYPE (arg)))
2986 return EXACT_MATCH_BADNESS;
2987 return INCOMPATIBLE_TYPE_BADNESS;
2988 case TYPE_CODE_FUNC:
2989 return rank_one_type (TYPE_TARGET_TYPE (parm), arg, NULL);
2991 if (value != NULL && TYPE_CODE (value_type (value)) == TYPE_CODE_INT)
2993 if (value_as_long (value) == 0)
2995 /* Null pointer conversion: allow it to be cast to a pointer.
2996 [4.10.1 of C++ standard draft n3290] */
2997 return NULL_POINTER_CONVERSION_BADNESS;
3001 /* If type checking is disabled, allow the conversion. */
3002 if (!strict_type_checking)
3003 return NS_INTEGER_POINTER_CONVERSION_BADNESS;
3007 case TYPE_CODE_ENUM:
3008 case TYPE_CODE_FLAGS:
3009 case TYPE_CODE_CHAR:
3010 case TYPE_CODE_RANGE:
3011 case TYPE_CODE_BOOL:
3013 return INCOMPATIBLE_TYPE_BADNESS;
3015 case TYPE_CODE_ARRAY:
3016 switch (TYPE_CODE (arg))
3019 case TYPE_CODE_ARRAY:
3020 return rank_one_type (TYPE_TARGET_TYPE (parm),
3021 TYPE_TARGET_TYPE (arg), NULL);
3023 return INCOMPATIBLE_TYPE_BADNESS;
3025 case TYPE_CODE_FUNC:
3026 switch (TYPE_CODE (arg))
3028 case TYPE_CODE_PTR: /* funcptr -> func */
3029 return rank_one_type (parm, TYPE_TARGET_TYPE (arg), NULL);
3031 return INCOMPATIBLE_TYPE_BADNESS;
3034 switch (TYPE_CODE (arg))
3037 if (TYPE_LENGTH (arg) == TYPE_LENGTH (parm))
3039 /* Deal with signed, unsigned, and plain chars and
3040 signed and unsigned ints. */
3041 if (TYPE_NOSIGN (parm))
3043 /* This case only for character types. */
3044 if (TYPE_NOSIGN (arg))
3045 return EXACT_MATCH_BADNESS; /* plain char -> plain char */
3046 else /* signed/unsigned char -> plain char */
3047 return INTEGER_CONVERSION_BADNESS;
3049 else if (TYPE_UNSIGNED (parm))
3051 if (TYPE_UNSIGNED (arg))
3053 /* unsigned int -> unsigned int, or
3054 unsigned long -> unsigned long */
3055 if (integer_types_same_name_p (TYPE_NAME (parm),
3057 return EXACT_MATCH_BADNESS;
3058 else if (integer_types_same_name_p (TYPE_NAME (arg),
3060 && integer_types_same_name_p (TYPE_NAME (parm),
3062 /* unsigned int -> unsigned long */
3063 return INTEGER_PROMOTION_BADNESS;
3065 /* unsigned long -> unsigned int */
3066 return INTEGER_CONVERSION_BADNESS;
3070 if (integer_types_same_name_p (TYPE_NAME (arg),
3072 && integer_types_same_name_p (TYPE_NAME (parm),
3074 /* signed long -> unsigned int */
3075 return INTEGER_CONVERSION_BADNESS;
3077 /* signed int/long -> unsigned int/long */
3078 return INTEGER_CONVERSION_BADNESS;
3081 else if (!TYPE_NOSIGN (arg) && !TYPE_UNSIGNED (arg))
3083 if (integer_types_same_name_p (TYPE_NAME (parm),
3085 return EXACT_MATCH_BADNESS;
3086 else if (integer_types_same_name_p (TYPE_NAME (arg),
3088 && integer_types_same_name_p (TYPE_NAME (parm),
3090 return INTEGER_PROMOTION_BADNESS;
3092 return INTEGER_CONVERSION_BADNESS;
3095 return INTEGER_CONVERSION_BADNESS;
3097 else if (TYPE_LENGTH (arg) < TYPE_LENGTH (parm))
3098 return INTEGER_PROMOTION_BADNESS;
3100 return INTEGER_CONVERSION_BADNESS;
3101 case TYPE_CODE_ENUM:
3102 case TYPE_CODE_FLAGS:
3103 case TYPE_CODE_CHAR:
3104 case TYPE_CODE_RANGE:
3105 case TYPE_CODE_BOOL:
3106 if (TYPE_DECLARED_CLASS (arg))
3107 return INCOMPATIBLE_TYPE_BADNESS;
3108 return INTEGER_PROMOTION_BADNESS;
3110 return INT_FLOAT_CONVERSION_BADNESS;
3112 return NS_POINTER_CONVERSION_BADNESS;
3114 return INCOMPATIBLE_TYPE_BADNESS;
3117 case TYPE_CODE_ENUM:
3118 switch (TYPE_CODE (arg))
3121 case TYPE_CODE_CHAR:
3122 case TYPE_CODE_RANGE:
3123 case TYPE_CODE_BOOL:
3124 case TYPE_CODE_ENUM:
3125 if (TYPE_DECLARED_CLASS (parm) || TYPE_DECLARED_CLASS (arg))
3126 return INCOMPATIBLE_TYPE_BADNESS;
3127 return INTEGER_CONVERSION_BADNESS;
3129 return INT_FLOAT_CONVERSION_BADNESS;
3131 return INCOMPATIBLE_TYPE_BADNESS;
3134 case TYPE_CODE_CHAR:
3135 switch (TYPE_CODE (arg))
3137 case TYPE_CODE_RANGE:
3138 case TYPE_CODE_BOOL:
3139 case TYPE_CODE_ENUM:
3140 if (TYPE_DECLARED_CLASS (arg))
3141 return INCOMPATIBLE_TYPE_BADNESS;
3142 return INTEGER_CONVERSION_BADNESS;
3144 return INT_FLOAT_CONVERSION_BADNESS;
3146 if (TYPE_LENGTH (arg) > TYPE_LENGTH (parm))
3147 return INTEGER_CONVERSION_BADNESS;
3148 else if (TYPE_LENGTH (arg) < TYPE_LENGTH (parm))
3149 return INTEGER_PROMOTION_BADNESS;
3150 /* >>> !! else fall through !! <<< */
3151 case TYPE_CODE_CHAR:
3152 /* Deal with signed, unsigned, and plain chars for C++ and
3153 with int cases falling through from previous case. */
3154 if (TYPE_NOSIGN (parm))
3156 if (TYPE_NOSIGN (arg))
3157 return EXACT_MATCH_BADNESS;
3159 return INTEGER_CONVERSION_BADNESS;
3161 else if (TYPE_UNSIGNED (parm))
3163 if (TYPE_UNSIGNED (arg))
3164 return EXACT_MATCH_BADNESS;
3166 return INTEGER_PROMOTION_BADNESS;
3168 else if (!TYPE_NOSIGN (arg) && !TYPE_UNSIGNED (arg))
3169 return EXACT_MATCH_BADNESS;
3171 return INTEGER_CONVERSION_BADNESS;
3173 return INCOMPATIBLE_TYPE_BADNESS;
3176 case TYPE_CODE_RANGE:
3177 switch (TYPE_CODE (arg))
3180 case TYPE_CODE_CHAR:
3181 case TYPE_CODE_RANGE:
3182 case TYPE_CODE_BOOL:
3183 case TYPE_CODE_ENUM:
3184 return INTEGER_CONVERSION_BADNESS;
3186 return INT_FLOAT_CONVERSION_BADNESS;
3188 return INCOMPATIBLE_TYPE_BADNESS;
3191 case TYPE_CODE_BOOL:
3192 switch (TYPE_CODE (arg))
3194 /* n3290 draft, section 4.12.1 (conv.bool):
3196 "A prvalue of arithmetic, unscoped enumeration, pointer, or
3197 pointer to member type can be converted to a prvalue of type
3198 bool. A zero value, null pointer value, or null member pointer
3199 value is converted to false; any other value is converted to
3200 true. A prvalue of type std::nullptr_t can be converted to a
3201 prvalue of type bool; the resulting value is false." */
3203 case TYPE_CODE_CHAR:
3204 case TYPE_CODE_ENUM:
3206 case TYPE_CODE_MEMBERPTR:
3208 return BOOL_CONVERSION_BADNESS;
3209 case TYPE_CODE_RANGE:
3210 return INCOMPATIBLE_TYPE_BADNESS;
3211 case TYPE_CODE_BOOL:
3212 return EXACT_MATCH_BADNESS;
3214 return INCOMPATIBLE_TYPE_BADNESS;
3218 switch (TYPE_CODE (arg))
3221 if (TYPE_LENGTH (arg) < TYPE_LENGTH (parm))
3222 return FLOAT_PROMOTION_BADNESS;
3223 else if (TYPE_LENGTH (arg) == TYPE_LENGTH (parm))
3224 return EXACT_MATCH_BADNESS;
3226 return FLOAT_CONVERSION_BADNESS;
3228 case TYPE_CODE_BOOL:
3229 case TYPE_CODE_ENUM:
3230 case TYPE_CODE_RANGE:
3231 case TYPE_CODE_CHAR:
3232 return INT_FLOAT_CONVERSION_BADNESS;
3234 return INCOMPATIBLE_TYPE_BADNESS;
3237 case TYPE_CODE_COMPLEX:
3238 switch (TYPE_CODE (arg))
3239 { /* Strictly not needed for C++, but... */
3241 return FLOAT_PROMOTION_BADNESS;
3242 case TYPE_CODE_COMPLEX:
3243 return EXACT_MATCH_BADNESS;
3245 return INCOMPATIBLE_TYPE_BADNESS;
3248 case TYPE_CODE_STRUCT:
3249 /* currently same as TYPE_CODE_CLASS. */
3250 switch (TYPE_CODE (arg))
3252 case TYPE_CODE_STRUCT:
3253 /* Check for derivation */
3254 rank.subrank = distance_to_ancestor (parm, arg, 0);
3255 if (rank.subrank >= 0)
3256 return sum_ranks (BASE_CONVERSION_BADNESS, rank);
3257 /* else fall through */
3259 return INCOMPATIBLE_TYPE_BADNESS;
3262 case TYPE_CODE_UNION:
3263 switch (TYPE_CODE (arg))
3265 case TYPE_CODE_UNION:
3267 return INCOMPATIBLE_TYPE_BADNESS;
3270 case TYPE_CODE_MEMBERPTR:
3271 switch (TYPE_CODE (arg))
3274 return INCOMPATIBLE_TYPE_BADNESS;
3277 case TYPE_CODE_METHOD:
3278 switch (TYPE_CODE (arg))
3282 return INCOMPATIBLE_TYPE_BADNESS;
3286 switch (TYPE_CODE (arg))
3290 return INCOMPATIBLE_TYPE_BADNESS;
3295 switch (TYPE_CODE (arg))
3299 return rank_one_type (TYPE_FIELD_TYPE (parm, 0),
3300 TYPE_FIELD_TYPE (arg, 0), NULL);
3302 return INCOMPATIBLE_TYPE_BADNESS;
3305 case TYPE_CODE_VOID:
3307 return INCOMPATIBLE_TYPE_BADNESS;
3308 } /* switch (TYPE_CODE (arg)) */
3311 /* End of functions for overload resolution. */
3313 /* Routines to pretty-print types. */
3316 print_bit_vector (B_TYPE *bits, int nbits)
3320 for (bitno = 0; bitno < nbits; bitno++)
3322 if ((bitno % 8) == 0)
3324 puts_filtered (" ");
3326 if (B_TST (bits, bitno))
3327 printf_filtered (("1"));
3329 printf_filtered (("0"));
3333 /* Note the first arg should be the "this" pointer, we may not want to
3334 include it since we may get into a infinitely recursive
3338 print_arg_types (struct field *args, int nargs, int spaces)
3344 for (i = 0; i < nargs; i++)
3345 recursive_dump_type (args[i].type, spaces + 2);
3350 field_is_static (struct field *f)
3352 /* "static" fields are the fields whose location is not relative
3353 to the address of the enclosing struct. It would be nice to
3354 have a dedicated flag that would be set for static fields when
3355 the type is being created. But in practice, checking the field
3356 loc_kind should give us an accurate answer. */
3357 return (FIELD_LOC_KIND (*f) == FIELD_LOC_KIND_PHYSNAME
3358 || FIELD_LOC_KIND (*f) == FIELD_LOC_KIND_PHYSADDR);
3362 dump_fn_fieldlists (struct type *type, int spaces)
3368 printfi_filtered (spaces, "fn_fieldlists ");
3369 gdb_print_host_address (TYPE_FN_FIELDLISTS (type), gdb_stdout);
3370 printf_filtered ("\n");
3371 for (method_idx = 0; method_idx < TYPE_NFN_FIELDS (type); method_idx++)
3373 f = TYPE_FN_FIELDLIST1 (type, method_idx);
3374 printfi_filtered (spaces + 2, "[%d] name '%s' (",
3376 TYPE_FN_FIELDLIST_NAME (type, method_idx));
3377 gdb_print_host_address (TYPE_FN_FIELDLIST_NAME (type, method_idx),
3379 printf_filtered (_(") length %d\n"),
3380 TYPE_FN_FIELDLIST_LENGTH (type, method_idx));
3381 for (overload_idx = 0;
3382 overload_idx < TYPE_FN_FIELDLIST_LENGTH (type, method_idx);
3385 printfi_filtered (spaces + 4, "[%d] physname '%s' (",
3387 TYPE_FN_FIELD_PHYSNAME (f, overload_idx));
3388 gdb_print_host_address (TYPE_FN_FIELD_PHYSNAME (f, overload_idx),
3390 printf_filtered (")\n");
3391 printfi_filtered (spaces + 8, "type ");
3392 gdb_print_host_address (TYPE_FN_FIELD_TYPE (f, overload_idx),
3394 printf_filtered ("\n");
3396 recursive_dump_type (TYPE_FN_FIELD_TYPE (f, overload_idx),
3399 printfi_filtered (spaces + 8, "args ");
3400 gdb_print_host_address (TYPE_FN_FIELD_ARGS (f, overload_idx),
3402 printf_filtered ("\n");
3404 print_arg_types (TYPE_FN_FIELD_ARGS (f, overload_idx),
3405 TYPE_NFIELDS (TYPE_FN_FIELD_TYPE (f,
3408 printfi_filtered (spaces + 8, "fcontext ");
3409 gdb_print_host_address (TYPE_FN_FIELD_FCONTEXT (f, overload_idx),
3411 printf_filtered ("\n");
3413 printfi_filtered (spaces + 8, "is_const %d\n",
3414 TYPE_FN_FIELD_CONST (f, overload_idx));
3415 printfi_filtered (spaces + 8, "is_volatile %d\n",
3416 TYPE_FN_FIELD_VOLATILE (f, overload_idx));
3417 printfi_filtered (spaces + 8, "is_private %d\n",
3418 TYPE_FN_FIELD_PRIVATE (f, overload_idx));
3419 printfi_filtered (spaces + 8, "is_protected %d\n",
3420 TYPE_FN_FIELD_PROTECTED (f, overload_idx));
3421 printfi_filtered (spaces + 8, "is_stub %d\n",
3422 TYPE_FN_FIELD_STUB (f, overload_idx));
3423 printfi_filtered (spaces + 8, "voffset %u\n",
3424 TYPE_FN_FIELD_VOFFSET (f, overload_idx));
3430 print_cplus_stuff (struct type *type, int spaces)
3432 printfi_filtered (spaces, "n_baseclasses %d\n",
3433 TYPE_N_BASECLASSES (type));
3434 printfi_filtered (spaces, "nfn_fields %d\n",
3435 TYPE_NFN_FIELDS (type));
3436 if (TYPE_N_BASECLASSES (type) > 0)
3438 printfi_filtered (spaces, "virtual_field_bits (%d bits at *",
3439 TYPE_N_BASECLASSES (type));
3440 gdb_print_host_address (TYPE_FIELD_VIRTUAL_BITS (type),
3442 printf_filtered (")");
3444 print_bit_vector (TYPE_FIELD_VIRTUAL_BITS (type),
3445 TYPE_N_BASECLASSES (type));
3446 puts_filtered ("\n");
3448 if (TYPE_NFIELDS (type) > 0)
3450 if (TYPE_FIELD_PRIVATE_BITS (type) != NULL)
3452 printfi_filtered (spaces,
3453 "private_field_bits (%d bits at *",
3454 TYPE_NFIELDS (type));
3455 gdb_print_host_address (TYPE_FIELD_PRIVATE_BITS (type),
3457 printf_filtered (")");
3458 print_bit_vector (TYPE_FIELD_PRIVATE_BITS (type),
3459 TYPE_NFIELDS (type));
3460 puts_filtered ("\n");
3462 if (TYPE_FIELD_PROTECTED_BITS (type) != NULL)
3464 printfi_filtered (spaces,
3465 "protected_field_bits (%d bits at *",
3466 TYPE_NFIELDS (type));
3467 gdb_print_host_address (TYPE_FIELD_PROTECTED_BITS (type),
3469 printf_filtered (")");
3470 print_bit_vector (TYPE_FIELD_PROTECTED_BITS (type),
3471 TYPE_NFIELDS (type));
3472 puts_filtered ("\n");
3475 if (TYPE_NFN_FIELDS (type) > 0)
3477 dump_fn_fieldlists (type, spaces);
3481 /* Print the contents of the TYPE's type_specific union, assuming that
3482 its type-specific kind is TYPE_SPECIFIC_GNAT_STUFF. */
3485 print_gnat_stuff (struct type *type, int spaces)
3487 struct type *descriptive_type = TYPE_DESCRIPTIVE_TYPE (type);
3489 recursive_dump_type (descriptive_type, spaces + 2);
3492 static struct obstack dont_print_type_obstack;
3495 recursive_dump_type (struct type *type, int spaces)
3500 obstack_begin (&dont_print_type_obstack, 0);
3502 if (TYPE_NFIELDS (type) > 0
3503 || (HAVE_CPLUS_STRUCT (type) && TYPE_NFN_FIELDS (type) > 0))
3505 struct type **first_dont_print
3506 = (struct type **) obstack_base (&dont_print_type_obstack);
3508 int i = (struct type **)
3509 obstack_next_free (&dont_print_type_obstack) - first_dont_print;
3513 if (type == first_dont_print[i])
3515 printfi_filtered (spaces, "type node ");
3516 gdb_print_host_address (type, gdb_stdout);
3517 printf_filtered (_(" <same as already seen type>\n"));
3522 obstack_ptr_grow (&dont_print_type_obstack, type);
3525 printfi_filtered (spaces, "type node ");
3526 gdb_print_host_address (type, gdb_stdout);
3527 printf_filtered ("\n");
3528 printfi_filtered (spaces, "name '%s' (",
3529 TYPE_NAME (type) ? TYPE_NAME (type) : "<NULL>");
3530 gdb_print_host_address (TYPE_NAME (type), gdb_stdout);
3531 printf_filtered (")\n");
3532 printfi_filtered (spaces, "tagname '%s' (",
3533 TYPE_TAG_NAME (type) ? TYPE_TAG_NAME (type) : "<NULL>");
3534 gdb_print_host_address (TYPE_TAG_NAME (type), gdb_stdout);
3535 printf_filtered (")\n");
3536 printfi_filtered (spaces, "code 0x%x ", TYPE_CODE (type));
3537 switch (TYPE_CODE (type))
3539 case TYPE_CODE_UNDEF:
3540 printf_filtered ("(TYPE_CODE_UNDEF)");
3543 printf_filtered ("(TYPE_CODE_PTR)");
3545 case TYPE_CODE_ARRAY:
3546 printf_filtered ("(TYPE_CODE_ARRAY)");
3548 case TYPE_CODE_STRUCT:
3549 printf_filtered ("(TYPE_CODE_STRUCT)");
3551 case TYPE_CODE_UNION:
3552 printf_filtered ("(TYPE_CODE_UNION)");
3554 case TYPE_CODE_ENUM:
3555 printf_filtered ("(TYPE_CODE_ENUM)");
3557 case TYPE_CODE_FLAGS:
3558 printf_filtered ("(TYPE_CODE_FLAGS)");
3560 case TYPE_CODE_FUNC:
3561 printf_filtered ("(TYPE_CODE_FUNC)");
3564 printf_filtered ("(TYPE_CODE_INT)");
3567 printf_filtered ("(TYPE_CODE_FLT)");
3569 case TYPE_CODE_VOID:
3570 printf_filtered ("(TYPE_CODE_VOID)");
3573 printf_filtered ("(TYPE_CODE_SET)");
3575 case TYPE_CODE_RANGE:
3576 printf_filtered ("(TYPE_CODE_RANGE)");
3578 case TYPE_CODE_STRING:
3579 printf_filtered ("(TYPE_CODE_STRING)");
3581 case TYPE_CODE_ERROR:
3582 printf_filtered ("(TYPE_CODE_ERROR)");
3584 case TYPE_CODE_MEMBERPTR:
3585 printf_filtered ("(TYPE_CODE_MEMBERPTR)");
3587 case TYPE_CODE_METHODPTR:
3588 printf_filtered ("(TYPE_CODE_METHODPTR)");
3590 case TYPE_CODE_METHOD:
3591 printf_filtered ("(TYPE_CODE_METHOD)");
3594 printf_filtered ("(TYPE_CODE_REF)");
3596 case TYPE_CODE_CHAR:
3597 printf_filtered ("(TYPE_CODE_CHAR)");
3599 case TYPE_CODE_BOOL:
3600 printf_filtered ("(TYPE_CODE_BOOL)");
3602 case TYPE_CODE_COMPLEX:
3603 printf_filtered ("(TYPE_CODE_COMPLEX)");
3605 case TYPE_CODE_TYPEDEF:
3606 printf_filtered ("(TYPE_CODE_TYPEDEF)");
3608 case TYPE_CODE_NAMESPACE:
3609 printf_filtered ("(TYPE_CODE_NAMESPACE)");
3612 printf_filtered ("(UNKNOWN TYPE CODE)");
3615 puts_filtered ("\n");
3616 printfi_filtered (spaces, "length %d\n", TYPE_LENGTH (type));
3617 if (TYPE_OBJFILE_OWNED (type))
3619 printfi_filtered (spaces, "objfile ");
3620 gdb_print_host_address (TYPE_OWNER (type).objfile, gdb_stdout);
3624 printfi_filtered (spaces, "gdbarch ");
3625 gdb_print_host_address (TYPE_OWNER (type).gdbarch, gdb_stdout);
3627 printf_filtered ("\n");
3628 printfi_filtered (spaces, "target_type ");
3629 gdb_print_host_address (TYPE_TARGET_TYPE (type), gdb_stdout);
3630 printf_filtered ("\n");
3631 if (TYPE_TARGET_TYPE (type) != NULL)
3633 recursive_dump_type (TYPE_TARGET_TYPE (type), spaces + 2);
3635 printfi_filtered (spaces, "pointer_type ");
3636 gdb_print_host_address (TYPE_POINTER_TYPE (type), gdb_stdout);
3637 printf_filtered ("\n");
3638 printfi_filtered (spaces, "reference_type ");
3639 gdb_print_host_address (TYPE_REFERENCE_TYPE (type), gdb_stdout);
3640 printf_filtered ("\n");
3641 printfi_filtered (spaces, "type_chain ");
3642 gdb_print_host_address (TYPE_CHAIN (type), gdb_stdout);
3643 printf_filtered ("\n");
3644 printfi_filtered (spaces, "instance_flags 0x%x",
3645 TYPE_INSTANCE_FLAGS (type));
3646 if (TYPE_CONST (type))
3648 puts_filtered (" TYPE_FLAG_CONST");
3650 if (TYPE_VOLATILE (type))
3652 puts_filtered (" TYPE_FLAG_VOLATILE");
3654 if (TYPE_CODE_SPACE (type))
3656 puts_filtered (" TYPE_FLAG_CODE_SPACE");
3658 if (TYPE_DATA_SPACE (type))
3660 puts_filtered (" TYPE_FLAG_DATA_SPACE");
3662 if (TYPE_ADDRESS_CLASS_1 (type))
3664 puts_filtered (" TYPE_FLAG_ADDRESS_CLASS_1");
3666 if (TYPE_ADDRESS_CLASS_2 (type))
3668 puts_filtered (" TYPE_FLAG_ADDRESS_CLASS_2");
3670 if (TYPE_RESTRICT (type))
3672 puts_filtered (" TYPE_FLAG_RESTRICT");
3674 puts_filtered ("\n");
3676 printfi_filtered (spaces, "flags");
3677 if (TYPE_UNSIGNED (type))
3679 puts_filtered (" TYPE_FLAG_UNSIGNED");
3681 if (TYPE_NOSIGN (type))
3683 puts_filtered (" TYPE_FLAG_NOSIGN");
3685 if (TYPE_STUB (type))
3687 puts_filtered (" TYPE_FLAG_STUB");
3689 if (TYPE_TARGET_STUB (type))
3691 puts_filtered (" TYPE_FLAG_TARGET_STUB");
3693 if (TYPE_STATIC (type))
3695 puts_filtered (" TYPE_FLAG_STATIC");
3697 if (TYPE_PROTOTYPED (type))
3699 puts_filtered (" TYPE_FLAG_PROTOTYPED");
3701 if (TYPE_INCOMPLETE (type))
3703 puts_filtered (" TYPE_FLAG_INCOMPLETE");
3705 if (TYPE_VARARGS (type))
3707 puts_filtered (" TYPE_FLAG_VARARGS");
3709 /* This is used for things like AltiVec registers on ppc. Gcc emits
3710 an attribute for the array type, which tells whether or not we
3711 have a vector, instead of a regular array. */
3712 if (TYPE_VECTOR (type))
3714 puts_filtered (" TYPE_FLAG_VECTOR");
3716 if (TYPE_FIXED_INSTANCE (type))
3718 puts_filtered (" TYPE_FIXED_INSTANCE");
3720 if (TYPE_STUB_SUPPORTED (type))
3722 puts_filtered (" TYPE_STUB_SUPPORTED");
3724 if (TYPE_NOTTEXT (type))
3726 puts_filtered (" TYPE_NOTTEXT");
3728 puts_filtered ("\n");
3729 printfi_filtered (spaces, "nfields %d ", TYPE_NFIELDS (type));
3730 gdb_print_host_address (TYPE_FIELDS (type), gdb_stdout);
3731 puts_filtered ("\n");
3732 for (idx = 0; idx < TYPE_NFIELDS (type); idx++)
3734 if (TYPE_CODE (type) == TYPE_CODE_ENUM)
3735 printfi_filtered (spaces + 2,
3736 "[%d] enumval %s type ",
3737 idx, plongest (TYPE_FIELD_ENUMVAL (type, idx)));
3739 printfi_filtered (spaces + 2,
3740 "[%d] bitpos %d bitsize %d type ",
3741 idx, TYPE_FIELD_BITPOS (type, idx),
3742 TYPE_FIELD_BITSIZE (type, idx));
3743 gdb_print_host_address (TYPE_FIELD_TYPE (type, idx), gdb_stdout);
3744 printf_filtered (" name '%s' (",
3745 TYPE_FIELD_NAME (type, idx) != NULL
3746 ? TYPE_FIELD_NAME (type, idx)
3748 gdb_print_host_address (TYPE_FIELD_NAME (type, idx), gdb_stdout);
3749 printf_filtered (")\n");
3750 if (TYPE_FIELD_TYPE (type, idx) != NULL)
3752 recursive_dump_type (TYPE_FIELD_TYPE (type, idx), spaces + 4);
3755 if (TYPE_CODE (type) == TYPE_CODE_RANGE)
3757 printfi_filtered (spaces, "low %s%s high %s%s\n",
3758 plongest (TYPE_LOW_BOUND (type)),
3759 TYPE_LOW_BOUND_UNDEFINED (type) ? " (undefined)" : "",
3760 plongest (TYPE_HIGH_BOUND (type)),
3761 TYPE_HIGH_BOUND_UNDEFINED (type)
3762 ? " (undefined)" : "");
3764 printfi_filtered (spaces, "vptr_basetype ");
3765 gdb_print_host_address (TYPE_VPTR_BASETYPE (type), gdb_stdout);
3766 puts_filtered ("\n");
3767 if (TYPE_VPTR_BASETYPE (type) != NULL)
3769 recursive_dump_type (TYPE_VPTR_BASETYPE (type), spaces + 2);
3771 printfi_filtered (spaces, "vptr_fieldno %d\n",
3772 TYPE_VPTR_FIELDNO (type));
3774 switch (TYPE_SPECIFIC_FIELD (type))
3776 case TYPE_SPECIFIC_CPLUS_STUFF:
3777 printfi_filtered (spaces, "cplus_stuff ");
3778 gdb_print_host_address (TYPE_CPLUS_SPECIFIC (type),
3780 puts_filtered ("\n");
3781 print_cplus_stuff (type, spaces);
3784 case TYPE_SPECIFIC_GNAT_STUFF:
3785 printfi_filtered (spaces, "gnat_stuff ");
3786 gdb_print_host_address (TYPE_GNAT_SPECIFIC (type), gdb_stdout);
3787 puts_filtered ("\n");
3788 print_gnat_stuff (type, spaces);
3791 case TYPE_SPECIFIC_FLOATFORMAT:
3792 printfi_filtered (spaces, "floatformat ");
3793 if (TYPE_FLOATFORMAT (type) == NULL)
3794 puts_filtered ("(null)");
3797 puts_filtered ("{ ");
3798 if (TYPE_FLOATFORMAT (type)[0] == NULL
3799 || TYPE_FLOATFORMAT (type)[0]->name == NULL)
3800 puts_filtered ("(null)");
3802 puts_filtered (TYPE_FLOATFORMAT (type)[0]->name);
3804 puts_filtered (", ");
3805 if (TYPE_FLOATFORMAT (type)[1] == NULL
3806 || TYPE_FLOATFORMAT (type)[1]->name == NULL)
3807 puts_filtered ("(null)");
3809 puts_filtered (TYPE_FLOATFORMAT (type)[1]->name);
3811 puts_filtered (" }");
3813 puts_filtered ("\n");
3816 case TYPE_SPECIFIC_FUNC:
3817 printfi_filtered (spaces, "calling_convention %d\n",
3818 TYPE_CALLING_CONVENTION (type));
3819 /* tail_call_list is not printed. */
3824 obstack_free (&dont_print_type_obstack, NULL);
3827 /* Trivial helpers for the libiberty hash table, for mapping one
3832 struct type *old, *new;
3836 type_pair_hash (const void *item)
3838 const struct type_pair *pair = item;
3840 return htab_hash_pointer (pair->old);
3844 type_pair_eq (const void *item_lhs, const void *item_rhs)
3846 const struct type_pair *lhs = item_lhs, *rhs = item_rhs;
3848 return lhs->old == rhs->old;
3851 /* Allocate the hash table used by copy_type_recursive to walk
3852 types without duplicates. We use OBJFILE's obstack, because
3853 OBJFILE is about to be deleted. */
3856 create_copied_types_hash (struct objfile *objfile)
3858 return htab_create_alloc_ex (1, type_pair_hash, type_pair_eq,
3859 NULL, &objfile->objfile_obstack,
3860 hashtab_obstack_allocate,
3861 dummy_obstack_deallocate);
3864 /* Recursively copy (deep copy) TYPE, if it is associated with
3865 OBJFILE. Return a new type allocated using malloc, a saved type if
3866 we have already visited TYPE (using COPIED_TYPES), or TYPE if it is
3867 not associated with OBJFILE. */
3870 copy_type_recursive (struct objfile *objfile,
3872 htab_t copied_types)
3874 struct type_pair *stored, pair;
3876 struct type *new_type;
3878 if (! TYPE_OBJFILE_OWNED (type))
3881 /* This type shouldn't be pointing to any types in other objfiles;
3882 if it did, the type might disappear unexpectedly. */
3883 gdb_assert (TYPE_OBJFILE (type) == objfile);
3886 slot = htab_find_slot (copied_types, &pair, INSERT);
3888 return ((struct type_pair *) *slot)->new;
3890 new_type = alloc_type_arch (get_type_arch (type));
3892 /* We must add the new type to the hash table immediately, in case
3893 we encounter this type again during a recursive call below. */
3895 = obstack_alloc (&objfile->objfile_obstack, sizeof (struct type_pair));
3897 stored->new = new_type;
3900 /* Copy the common fields of types. For the main type, we simply
3901 copy the entire thing and then update specific fields as needed. */
3902 *TYPE_MAIN_TYPE (new_type) = *TYPE_MAIN_TYPE (type);
3903 TYPE_OBJFILE_OWNED (new_type) = 0;
3904 TYPE_OWNER (new_type).gdbarch = get_type_arch (type);
3906 if (TYPE_NAME (type))
3907 TYPE_NAME (new_type) = xstrdup (TYPE_NAME (type));
3908 if (TYPE_TAG_NAME (type))
3909 TYPE_TAG_NAME (new_type) = xstrdup (TYPE_TAG_NAME (type));
3911 TYPE_INSTANCE_FLAGS (new_type) = TYPE_INSTANCE_FLAGS (type);
3912 TYPE_LENGTH (new_type) = TYPE_LENGTH (type);
3914 /* Copy the fields. */
3915 if (TYPE_NFIELDS (type))
3919 nfields = TYPE_NFIELDS (type);
3920 TYPE_FIELDS (new_type) = XCNEWVEC (struct field, nfields);
3921 for (i = 0; i < nfields; i++)
3923 TYPE_FIELD_ARTIFICIAL (new_type, i) =
3924 TYPE_FIELD_ARTIFICIAL (type, i);
3925 TYPE_FIELD_BITSIZE (new_type, i) = TYPE_FIELD_BITSIZE (type, i);
3926 if (TYPE_FIELD_TYPE (type, i))
3927 TYPE_FIELD_TYPE (new_type, i)
3928 = copy_type_recursive (objfile, TYPE_FIELD_TYPE (type, i),
3930 if (TYPE_FIELD_NAME (type, i))
3931 TYPE_FIELD_NAME (new_type, i) =
3932 xstrdup (TYPE_FIELD_NAME (type, i));
3933 switch (TYPE_FIELD_LOC_KIND (type, i))
3935 case FIELD_LOC_KIND_BITPOS:
3936 SET_FIELD_BITPOS (TYPE_FIELD (new_type, i),
3937 TYPE_FIELD_BITPOS (type, i));
3939 case FIELD_LOC_KIND_ENUMVAL:
3940 SET_FIELD_ENUMVAL (TYPE_FIELD (new_type, i),
3941 TYPE_FIELD_ENUMVAL (type, i));
3943 case FIELD_LOC_KIND_PHYSADDR:
3944 SET_FIELD_PHYSADDR (TYPE_FIELD (new_type, i),
3945 TYPE_FIELD_STATIC_PHYSADDR (type, i));
3947 case FIELD_LOC_KIND_PHYSNAME:
3948 SET_FIELD_PHYSNAME (TYPE_FIELD (new_type, i),
3949 xstrdup (TYPE_FIELD_STATIC_PHYSNAME (type,
3953 internal_error (__FILE__, __LINE__,
3954 _("Unexpected type field location kind: %d"),
3955 TYPE_FIELD_LOC_KIND (type, i));
3960 /* For range types, copy the bounds information. */
3961 if (TYPE_CODE (type) == TYPE_CODE_RANGE)
3963 TYPE_RANGE_DATA (new_type) = xmalloc (sizeof (struct range_bounds));
3964 *TYPE_RANGE_DATA (new_type) = *TYPE_RANGE_DATA (type);
3967 /* Copy pointers to other types. */
3968 if (TYPE_TARGET_TYPE (type))
3969 TYPE_TARGET_TYPE (new_type) =
3970 copy_type_recursive (objfile,
3971 TYPE_TARGET_TYPE (type),
3973 if (TYPE_VPTR_BASETYPE (type))
3974 TYPE_VPTR_BASETYPE (new_type) =
3975 copy_type_recursive (objfile,
3976 TYPE_VPTR_BASETYPE (type),
3978 /* Maybe copy the type_specific bits.
3980 NOTE drow/2005-12-09: We do not copy the C++-specific bits like
3981 base classes and methods. There's no fundamental reason why we
3982 can't, but at the moment it is not needed. */
3984 if (TYPE_CODE (type) == TYPE_CODE_FLT)
3985 TYPE_FLOATFORMAT (new_type) = TYPE_FLOATFORMAT (type);
3986 else if (TYPE_CODE (type) == TYPE_CODE_STRUCT
3987 || TYPE_CODE (type) == TYPE_CODE_UNION
3988 || TYPE_CODE (type) == TYPE_CODE_NAMESPACE)
3989 INIT_CPLUS_SPECIFIC (new_type);
3994 /* Make a copy of the given TYPE, except that the pointer & reference
3995 types are not preserved.
3997 This function assumes that the given type has an associated objfile.
3998 This objfile is used to allocate the new type. */
4001 copy_type (const struct type *type)
4003 struct type *new_type;
4005 gdb_assert (TYPE_OBJFILE_OWNED (type));
4007 new_type = alloc_type_copy (type);
4008 TYPE_INSTANCE_FLAGS (new_type) = TYPE_INSTANCE_FLAGS (type);
4009 TYPE_LENGTH (new_type) = TYPE_LENGTH (type);
4010 memcpy (TYPE_MAIN_TYPE (new_type), TYPE_MAIN_TYPE (type),
4011 sizeof (struct main_type));
4016 /* Helper functions to initialize architecture-specific types. */
4018 /* Allocate a type structure associated with GDBARCH and set its
4019 CODE, LENGTH, and NAME fields. */
4022 arch_type (struct gdbarch *gdbarch,
4023 enum type_code code, int length, char *name)
4027 type = alloc_type_arch (gdbarch);
4028 TYPE_CODE (type) = code;
4029 TYPE_LENGTH (type) = length;
4032 TYPE_NAME (type) = xstrdup (name);
4037 /* Allocate a TYPE_CODE_INT type structure associated with GDBARCH.
4038 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
4039 the type's TYPE_UNSIGNED flag. NAME is the type name. */
4042 arch_integer_type (struct gdbarch *gdbarch,
4043 int bit, int unsigned_p, char *name)
4047 t = arch_type (gdbarch, TYPE_CODE_INT, bit / TARGET_CHAR_BIT, name);
4049 TYPE_UNSIGNED (t) = 1;
4050 if (name && strcmp (name, "char") == 0)
4051 TYPE_NOSIGN (t) = 1;
4056 /* Allocate a TYPE_CODE_CHAR type structure associated with GDBARCH.
4057 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
4058 the type's TYPE_UNSIGNED flag. NAME is the type name. */
4061 arch_character_type (struct gdbarch *gdbarch,
4062 int bit, int unsigned_p, char *name)
4066 t = arch_type (gdbarch, TYPE_CODE_CHAR, bit / TARGET_CHAR_BIT, name);
4068 TYPE_UNSIGNED (t) = 1;
4073 /* Allocate a TYPE_CODE_BOOL type structure associated with GDBARCH.
4074 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
4075 the type's TYPE_UNSIGNED flag. NAME is the type name. */
4078 arch_boolean_type (struct gdbarch *gdbarch,
4079 int bit, int unsigned_p, char *name)
4083 t = arch_type (gdbarch, TYPE_CODE_BOOL, bit / TARGET_CHAR_BIT, name);
4085 TYPE_UNSIGNED (t) = 1;
4090 /* Allocate a TYPE_CODE_FLT type structure associated with GDBARCH.
4091 BIT is the type size in bits; if BIT equals -1, the size is
4092 determined by the floatformat. NAME is the type name. Set the
4093 TYPE_FLOATFORMAT from FLOATFORMATS. */
4096 arch_float_type (struct gdbarch *gdbarch,
4097 int bit, char *name, const struct floatformat **floatformats)
4103 gdb_assert (floatformats != NULL);
4104 gdb_assert (floatformats[0] != NULL && floatformats[1] != NULL);
4105 bit = floatformats[0]->totalsize;
4107 gdb_assert (bit >= 0);
4109 t = arch_type (gdbarch, TYPE_CODE_FLT, bit / TARGET_CHAR_BIT, name);
4110 TYPE_FLOATFORMAT (t) = floatformats;
4114 /* Allocate a TYPE_CODE_COMPLEX type structure associated with GDBARCH.
4115 NAME is the type name. TARGET_TYPE is the component float type. */
4118 arch_complex_type (struct gdbarch *gdbarch,
4119 char *name, struct type *target_type)
4123 t = arch_type (gdbarch, TYPE_CODE_COMPLEX,
4124 2 * TYPE_LENGTH (target_type), name);
4125 TYPE_TARGET_TYPE (t) = target_type;
4129 /* Allocate a TYPE_CODE_FLAGS type structure associated with GDBARCH.
4130 NAME is the type name. LENGTH is the size of the flag word in bytes. */
4133 arch_flags_type (struct gdbarch *gdbarch, char *name, int length)
4135 int nfields = length * TARGET_CHAR_BIT;
4138 type = arch_type (gdbarch, TYPE_CODE_FLAGS, length, name);
4139 TYPE_UNSIGNED (type) = 1;
4140 TYPE_NFIELDS (type) = nfields;
4141 TYPE_FIELDS (type) = TYPE_ZALLOC (type, nfields * sizeof (struct field));
4146 /* Add field to TYPE_CODE_FLAGS type TYPE to indicate the bit at
4147 position BITPOS is called NAME. */
4150 append_flags_type_flag (struct type *type, int bitpos, char *name)
4152 gdb_assert (TYPE_CODE (type) == TYPE_CODE_FLAGS);
4153 gdb_assert (bitpos < TYPE_NFIELDS (type));
4154 gdb_assert (bitpos >= 0);
4158 TYPE_FIELD_NAME (type, bitpos) = xstrdup (name);
4159 SET_FIELD_BITPOS (TYPE_FIELD (type, bitpos), bitpos);
4163 /* Don't show this field to the user. */
4164 SET_FIELD_BITPOS (TYPE_FIELD (type, bitpos), -1);
4168 /* Allocate a TYPE_CODE_STRUCT or TYPE_CODE_UNION type structure (as
4169 specified by CODE) associated with GDBARCH. NAME is the type name. */
4172 arch_composite_type (struct gdbarch *gdbarch, char *name, enum type_code code)
4176 gdb_assert (code == TYPE_CODE_STRUCT || code == TYPE_CODE_UNION);
4177 t = arch_type (gdbarch, code, 0, NULL);
4178 TYPE_TAG_NAME (t) = name;
4179 INIT_CPLUS_SPECIFIC (t);
4183 /* Add new field with name NAME and type FIELD to composite type T.
4184 Do not set the field's position or adjust the type's length;
4185 the caller should do so. Return the new field. */
4188 append_composite_type_field_raw (struct type *t, char *name,
4193 TYPE_NFIELDS (t) = TYPE_NFIELDS (t) + 1;
4194 TYPE_FIELDS (t) = xrealloc (TYPE_FIELDS (t),
4195 sizeof (struct field) * TYPE_NFIELDS (t));
4196 f = &(TYPE_FIELDS (t)[TYPE_NFIELDS (t) - 1]);
4197 memset (f, 0, sizeof f[0]);
4198 FIELD_TYPE (f[0]) = field;
4199 FIELD_NAME (f[0]) = name;
4203 /* Add new field with name NAME and type FIELD to composite type T.
4204 ALIGNMENT (if non-zero) specifies the minimum field alignment. */
4207 append_composite_type_field_aligned (struct type *t, char *name,
4208 struct type *field, int alignment)
4210 struct field *f = append_composite_type_field_raw (t, name, field);
4212 if (TYPE_CODE (t) == TYPE_CODE_UNION)
4214 if (TYPE_LENGTH (t) < TYPE_LENGTH (field))
4215 TYPE_LENGTH (t) = TYPE_LENGTH (field);
4217 else if (TYPE_CODE (t) == TYPE_CODE_STRUCT)
4219 TYPE_LENGTH (t) = TYPE_LENGTH (t) + TYPE_LENGTH (field);
4220 if (TYPE_NFIELDS (t) > 1)
4222 SET_FIELD_BITPOS (f[0],
4223 (FIELD_BITPOS (f[-1])
4224 + (TYPE_LENGTH (FIELD_TYPE (f[-1]))
4225 * TARGET_CHAR_BIT)));
4231 alignment *= TARGET_CHAR_BIT;
4232 left = FIELD_BITPOS (f[0]) % alignment;
4236 SET_FIELD_BITPOS (f[0], FIELD_BITPOS (f[0]) + (alignment - left));
4237 TYPE_LENGTH (t) += (alignment - left) / TARGET_CHAR_BIT;
4244 /* Add new field with name NAME and type FIELD to composite type T. */
4247 append_composite_type_field (struct type *t, char *name,
4250 append_composite_type_field_aligned (t, name, field, 0);
4253 static struct gdbarch_data *gdbtypes_data;
4255 const struct builtin_type *
4256 builtin_type (struct gdbarch *gdbarch)
4258 return gdbarch_data (gdbarch, gdbtypes_data);
4262 gdbtypes_post_init (struct gdbarch *gdbarch)
4264 struct builtin_type *builtin_type
4265 = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct builtin_type);
4268 builtin_type->builtin_void
4269 = arch_type (gdbarch, TYPE_CODE_VOID, 1, "void");
4270 builtin_type->builtin_char
4271 = arch_integer_type (gdbarch, TARGET_CHAR_BIT,
4272 !gdbarch_char_signed (gdbarch), "char");
4273 builtin_type->builtin_signed_char
4274 = arch_integer_type (gdbarch, TARGET_CHAR_BIT,
4276 builtin_type->builtin_unsigned_char
4277 = arch_integer_type (gdbarch, TARGET_CHAR_BIT,
4278 1, "unsigned char");
4279 builtin_type->builtin_short
4280 = arch_integer_type (gdbarch, gdbarch_short_bit (gdbarch),
4282 builtin_type->builtin_unsigned_short
4283 = arch_integer_type (gdbarch, gdbarch_short_bit (gdbarch),
4284 1, "unsigned short");
4285 builtin_type->builtin_int
4286 = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch),
4288 builtin_type->builtin_unsigned_int
4289 = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch),
4291 builtin_type->builtin_long
4292 = arch_integer_type (gdbarch, gdbarch_long_bit (gdbarch),
4294 builtin_type->builtin_unsigned_long
4295 = arch_integer_type (gdbarch, gdbarch_long_bit (gdbarch),
4296 1, "unsigned long");
4297 builtin_type->builtin_long_long
4298 = arch_integer_type (gdbarch, gdbarch_long_long_bit (gdbarch),
4300 builtin_type->builtin_unsigned_long_long
4301 = arch_integer_type (gdbarch, gdbarch_long_long_bit (gdbarch),
4302 1, "unsigned long long");
4303 builtin_type->builtin_float
4304 = arch_float_type (gdbarch, gdbarch_float_bit (gdbarch),
4305 "float", gdbarch_float_format (gdbarch));
4306 builtin_type->builtin_double
4307 = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch),
4308 "double", gdbarch_double_format (gdbarch));
4309 builtin_type->builtin_long_double
4310 = arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch),
4311 "long double", gdbarch_long_double_format (gdbarch));
4312 builtin_type->builtin_complex
4313 = arch_complex_type (gdbarch, "complex",
4314 builtin_type->builtin_float);
4315 builtin_type->builtin_double_complex
4316 = arch_complex_type (gdbarch, "double complex",
4317 builtin_type->builtin_double);
4318 builtin_type->builtin_string
4319 = arch_type (gdbarch, TYPE_CODE_STRING, 1, "string");
4320 builtin_type->builtin_bool
4321 = arch_type (gdbarch, TYPE_CODE_BOOL, 1, "bool");
4323 /* The following three are about decimal floating point types, which
4324 are 32-bits, 64-bits and 128-bits respectively. */
4325 builtin_type->builtin_decfloat
4326 = arch_type (gdbarch, TYPE_CODE_DECFLOAT, 32 / 8, "_Decimal32");
4327 builtin_type->builtin_decdouble
4328 = arch_type (gdbarch, TYPE_CODE_DECFLOAT, 64 / 8, "_Decimal64");
4329 builtin_type->builtin_declong
4330 = arch_type (gdbarch, TYPE_CODE_DECFLOAT, 128 / 8, "_Decimal128");
4332 /* "True" character types. */
4333 builtin_type->builtin_true_char
4334 = arch_character_type (gdbarch, TARGET_CHAR_BIT, 0, "true character");
4335 builtin_type->builtin_true_unsigned_char
4336 = arch_character_type (gdbarch, TARGET_CHAR_BIT, 1, "true character");
4338 /* Fixed-size integer types. */
4339 builtin_type->builtin_int0
4340 = arch_integer_type (gdbarch, 0, 0, "int0_t");
4341 builtin_type->builtin_int8
4342 = arch_integer_type (gdbarch, 8, 0, "int8_t");
4343 builtin_type->builtin_uint8
4344 = arch_integer_type (gdbarch, 8, 1, "uint8_t");
4345 builtin_type->builtin_int16
4346 = arch_integer_type (gdbarch, 16, 0, "int16_t");
4347 builtin_type->builtin_uint16
4348 = arch_integer_type (gdbarch, 16, 1, "uint16_t");
4349 builtin_type->builtin_int32
4350 = arch_integer_type (gdbarch, 32, 0, "int32_t");
4351 builtin_type->builtin_uint32
4352 = arch_integer_type (gdbarch, 32, 1, "uint32_t");
4353 builtin_type->builtin_int64
4354 = arch_integer_type (gdbarch, 64, 0, "int64_t");
4355 builtin_type->builtin_uint64
4356 = arch_integer_type (gdbarch, 64, 1, "uint64_t");
4357 builtin_type->builtin_int128
4358 = arch_integer_type (gdbarch, 128, 0, "int128_t");
4359 builtin_type->builtin_uint128
4360 = arch_integer_type (gdbarch, 128, 1, "uint128_t");
4361 TYPE_INSTANCE_FLAGS (builtin_type->builtin_int8) |=
4362 TYPE_INSTANCE_FLAG_NOTTEXT;
4363 TYPE_INSTANCE_FLAGS (builtin_type->builtin_uint8) |=
4364 TYPE_INSTANCE_FLAG_NOTTEXT;
4366 /* Wide character types. */
4367 builtin_type->builtin_char16
4368 = arch_integer_type (gdbarch, 16, 0, "char16_t");
4369 builtin_type->builtin_char32
4370 = arch_integer_type (gdbarch, 32, 0, "char32_t");
4373 /* Default data/code pointer types. */
4374 builtin_type->builtin_data_ptr
4375 = lookup_pointer_type (builtin_type->builtin_void);
4376 builtin_type->builtin_func_ptr
4377 = lookup_pointer_type (lookup_function_type (builtin_type->builtin_void));
4378 builtin_type->builtin_func_func
4379 = lookup_function_type (builtin_type->builtin_func_ptr);
4381 /* This type represents a GDB internal function. */
4382 builtin_type->internal_fn
4383 = arch_type (gdbarch, TYPE_CODE_INTERNAL_FUNCTION, 0,
4384 "<internal function>");
4386 /* This type represents an xmethod. */
4387 builtin_type->xmethod
4388 = arch_type (gdbarch, TYPE_CODE_XMETHOD, 0, "<xmethod>");
4390 return builtin_type;
4393 /* This set of objfile-based types is intended to be used by symbol
4394 readers as basic types. */
4396 static const struct objfile_data *objfile_type_data;
4398 const struct objfile_type *
4399 objfile_type (struct objfile *objfile)
4401 struct gdbarch *gdbarch;
4402 struct objfile_type *objfile_type
4403 = objfile_data (objfile, objfile_type_data);
4406 return objfile_type;
4408 objfile_type = OBSTACK_CALLOC (&objfile->objfile_obstack,
4409 1, struct objfile_type);
4411 /* Use the objfile architecture to determine basic type properties. */
4412 gdbarch = get_objfile_arch (objfile);
4415 objfile_type->builtin_void
4416 = init_type (TYPE_CODE_VOID, 1,
4420 objfile_type->builtin_char
4421 = init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
4423 | (gdbarch_char_signed (gdbarch) ? 0 : TYPE_FLAG_UNSIGNED)),
4425 objfile_type->builtin_signed_char
4426 = init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
4428 "signed char", objfile);
4429 objfile_type->builtin_unsigned_char
4430 = init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
4432 "unsigned char", objfile);
4433 objfile_type->builtin_short
4434 = init_type (TYPE_CODE_INT,
4435 gdbarch_short_bit (gdbarch) / TARGET_CHAR_BIT,
4436 0, "short", objfile);
4437 objfile_type->builtin_unsigned_short
4438 = init_type (TYPE_CODE_INT,
4439 gdbarch_short_bit (gdbarch) / TARGET_CHAR_BIT,
4440 TYPE_FLAG_UNSIGNED, "unsigned short", objfile);
4441 objfile_type->builtin_int
4442 = init_type (TYPE_CODE_INT,
4443 gdbarch_int_bit (gdbarch) / TARGET_CHAR_BIT,
4445 objfile_type->builtin_unsigned_int
4446 = init_type (TYPE_CODE_INT,
4447 gdbarch_int_bit (gdbarch) / TARGET_CHAR_BIT,
4448 TYPE_FLAG_UNSIGNED, "unsigned int", objfile);
4449 objfile_type->builtin_long
4450 = init_type (TYPE_CODE_INT,
4451 gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT,
4452 0, "long", objfile);
4453 objfile_type->builtin_unsigned_long
4454 = init_type (TYPE_CODE_INT,
4455 gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT,
4456 TYPE_FLAG_UNSIGNED, "unsigned long", objfile);
4457 objfile_type->builtin_long_long
4458 = init_type (TYPE_CODE_INT,
4459 gdbarch_long_long_bit (gdbarch) / TARGET_CHAR_BIT,
4460 0, "long long", objfile);
4461 objfile_type->builtin_unsigned_long_long
4462 = init_type (TYPE_CODE_INT,
4463 gdbarch_long_long_bit (gdbarch) / TARGET_CHAR_BIT,
4464 TYPE_FLAG_UNSIGNED, "unsigned long long", objfile);
4466 objfile_type->builtin_float
4467 = init_type (TYPE_CODE_FLT,
4468 gdbarch_float_bit (gdbarch) / TARGET_CHAR_BIT,
4469 0, "float", objfile);
4470 TYPE_FLOATFORMAT (objfile_type->builtin_float)
4471 = gdbarch_float_format (gdbarch);
4472 objfile_type->builtin_double
4473 = init_type (TYPE_CODE_FLT,
4474 gdbarch_double_bit (gdbarch) / TARGET_CHAR_BIT,
4475 0, "double", objfile);
4476 TYPE_FLOATFORMAT (objfile_type->builtin_double)
4477 = gdbarch_double_format (gdbarch);
4478 objfile_type->builtin_long_double
4479 = init_type (TYPE_CODE_FLT,
4480 gdbarch_long_double_bit (gdbarch) / TARGET_CHAR_BIT,
4481 0, "long double", objfile);
4482 TYPE_FLOATFORMAT (objfile_type->builtin_long_double)
4483 = gdbarch_long_double_format (gdbarch);
4485 /* This type represents a type that was unrecognized in symbol read-in. */
4486 objfile_type->builtin_error
4487 = init_type (TYPE_CODE_ERROR, 0, 0, "<unknown type>", objfile);
4489 /* The following set of types is used for symbols with no
4490 debug information. */
4491 objfile_type->nodebug_text_symbol
4492 = init_type (TYPE_CODE_FUNC, 1, 0,
4493 "<text variable, no debug info>", objfile);
4494 TYPE_TARGET_TYPE (objfile_type->nodebug_text_symbol)
4495 = objfile_type->builtin_int;
4496 objfile_type->nodebug_text_gnu_ifunc_symbol
4497 = init_type (TYPE_CODE_FUNC, 1, TYPE_FLAG_GNU_IFUNC,
4498 "<text gnu-indirect-function variable, no debug info>",
4500 TYPE_TARGET_TYPE (objfile_type->nodebug_text_gnu_ifunc_symbol)
4501 = objfile_type->nodebug_text_symbol;
4502 objfile_type->nodebug_got_plt_symbol
4503 = init_type (TYPE_CODE_PTR, gdbarch_addr_bit (gdbarch) / 8, 0,
4504 "<text from jump slot in .got.plt, no debug info>",
4506 TYPE_TARGET_TYPE (objfile_type->nodebug_got_plt_symbol)
4507 = objfile_type->nodebug_text_symbol;
4508 objfile_type->nodebug_data_symbol
4509 = init_type (TYPE_CODE_INT,
4510 gdbarch_int_bit (gdbarch) / HOST_CHAR_BIT, 0,
4511 "<data variable, no debug info>", objfile);
4512 objfile_type->nodebug_unknown_symbol
4513 = init_type (TYPE_CODE_INT, 1, 0,
4514 "<variable (not text or data), no debug info>", objfile);
4515 objfile_type->nodebug_tls_symbol
4516 = init_type (TYPE_CODE_INT,
4517 gdbarch_int_bit (gdbarch) / HOST_CHAR_BIT, 0,
4518 "<thread local variable, no debug info>", objfile);
4520 /* NOTE: on some targets, addresses and pointers are not necessarily
4524 - gdb's `struct type' always describes the target's
4526 - gdb's `struct value' objects should always hold values in
4528 - gdb's CORE_ADDR values are addresses in the unified virtual
4529 address space that the assembler and linker work with. Thus,
4530 since target_read_memory takes a CORE_ADDR as an argument, it
4531 can access any memory on the target, even if the processor has
4532 separate code and data address spaces.
4534 In this context, objfile_type->builtin_core_addr is a bit odd:
4535 it's a target type for a value the target will never see. It's
4536 only used to hold the values of (typeless) linker symbols, which
4537 are indeed in the unified virtual address space. */
4539 objfile_type->builtin_core_addr
4540 = init_type (TYPE_CODE_INT,
4541 gdbarch_addr_bit (gdbarch) / 8,
4542 TYPE_FLAG_UNSIGNED, "__CORE_ADDR", objfile);
4544 set_objfile_data (objfile, objfile_type_data, objfile_type);
4545 return objfile_type;
4548 extern initialize_file_ftype _initialize_gdbtypes;
4551 _initialize_gdbtypes (void)
4553 gdbtypes_data = gdbarch_data_register_post_init (gdbtypes_post_init);
4554 objfile_type_data = register_objfile_data ();
4556 add_setshow_zuinteger_cmd ("overload", no_class, &overload_debug,
4557 _("Set debugging of C++ overloading."),
4558 _("Show debugging of C++ overloading."),
4559 _("When enabled, ranking of the "
4560 "functions is displayed."),
4562 show_overload_debug,
4563 &setdebuglist, &showdebuglist);
4565 /* Add user knob for controlling resolution of opaque types. */
4566 add_setshow_boolean_cmd ("opaque-type-resolution", class_support,
4567 &opaque_type_resolution,
4568 _("Set resolution of opaque struct/class/union"
4569 " types (if set before loading symbols)."),
4570 _("Show resolution of opaque struct/class/union"
4571 " types (if set before loading symbols)."),
4573 show_opaque_type_resolution,
4574 &setlist, &showlist);
4576 /* Add an option to permit non-strict type checking. */
4577 add_setshow_boolean_cmd ("type", class_support,
4578 &strict_type_checking,
4579 _("Set strict type checking."),
4580 _("Show strict type checking."),
4582 show_strict_type_checking,
4583 &setchecklist, &showchecklist);