1 /* Support routines for manipulating internal types for GDB.
3 Copyright (C) 1992-2019 Free Software Foundation, Inc.
5 Contributed by Cygnus Support, using pieces from other GDB modules.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
28 #include "expression.h"
33 #include "complaints.h"
37 #include "cp-support.h"
39 #include "dwarf2loc.h"
41 #include "floatformat.h"
43 /* Initialize BADNESS constants. */
45 const struct rank LENGTH_MISMATCH_BADNESS = {100,0};
47 const struct rank TOO_FEW_PARAMS_BADNESS = {100,0};
48 const struct rank INCOMPATIBLE_TYPE_BADNESS = {100,0};
50 const struct rank EXACT_MATCH_BADNESS = {0,0};
52 const struct rank INTEGER_PROMOTION_BADNESS = {1,0};
53 const struct rank FLOAT_PROMOTION_BADNESS = {1,0};
54 const struct rank BASE_PTR_CONVERSION_BADNESS = {1,0};
55 const struct rank CV_CONVERSION_BADNESS = {1, 0};
56 const struct rank INTEGER_CONVERSION_BADNESS = {2,0};
57 const struct rank FLOAT_CONVERSION_BADNESS = {2,0};
58 const struct rank INT_FLOAT_CONVERSION_BADNESS = {2,0};
59 const struct rank VOID_PTR_CONVERSION_BADNESS = {2,0};
60 const struct rank BOOL_CONVERSION_BADNESS = {3,0};
61 const struct rank BASE_CONVERSION_BADNESS = {2,0};
62 const struct rank REFERENCE_CONVERSION_BADNESS = {2,0};
63 const struct rank NULL_POINTER_CONVERSION_BADNESS = {2,0};
64 const struct rank NS_POINTER_CONVERSION_BADNESS = {10,0};
65 const struct rank NS_INTEGER_POINTER_CONVERSION_BADNESS = {3,0};
67 /* Floatformat pairs. */
68 const struct floatformat *floatformats_ieee_half[BFD_ENDIAN_UNKNOWN] = {
69 &floatformat_ieee_half_big,
70 &floatformat_ieee_half_little
72 const struct floatformat *floatformats_ieee_single[BFD_ENDIAN_UNKNOWN] = {
73 &floatformat_ieee_single_big,
74 &floatformat_ieee_single_little
76 const struct floatformat *floatformats_ieee_double[BFD_ENDIAN_UNKNOWN] = {
77 &floatformat_ieee_double_big,
78 &floatformat_ieee_double_little
80 const struct floatformat *floatformats_ieee_double_littlebyte_bigword[BFD_ENDIAN_UNKNOWN] = {
81 &floatformat_ieee_double_big,
82 &floatformat_ieee_double_littlebyte_bigword
84 const struct floatformat *floatformats_i387_ext[BFD_ENDIAN_UNKNOWN] = {
85 &floatformat_i387_ext,
88 const struct floatformat *floatformats_m68881_ext[BFD_ENDIAN_UNKNOWN] = {
89 &floatformat_m68881_ext,
90 &floatformat_m68881_ext
92 const struct floatformat *floatformats_arm_ext[BFD_ENDIAN_UNKNOWN] = {
93 &floatformat_arm_ext_big,
94 &floatformat_arm_ext_littlebyte_bigword
96 const struct floatformat *floatformats_ia64_spill[BFD_ENDIAN_UNKNOWN] = {
97 &floatformat_ia64_spill_big,
98 &floatformat_ia64_spill_little
100 const struct floatformat *floatformats_ia64_quad[BFD_ENDIAN_UNKNOWN] = {
101 &floatformat_ia64_quad_big,
102 &floatformat_ia64_quad_little
104 const struct floatformat *floatformats_vax_f[BFD_ENDIAN_UNKNOWN] = {
108 const struct floatformat *floatformats_vax_d[BFD_ENDIAN_UNKNOWN] = {
112 const struct floatformat *floatformats_ibm_long_double[BFD_ENDIAN_UNKNOWN] = {
113 &floatformat_ibm_long_double_big,
114 &floatformat_ibm_long_double_little
117 /* Should opaque types be resolved? */
119 static int opaque_type_resolution = 1;
121 /* A flag to enable printing of debugging information of C++
124 unsigned int overload_debug = 0;
126 /* A flag to enable strict type checking. */
128 static int strict_type_checking = 1;
130 /* A function to show whether opaque types are resolved. */
133 show_opaque_type_resolution (struct ui_file *file, int from_tty,
134 struct cmd_list_element *c,
137 fprintf_filtered (file, _("Resolution of opaque struct/class/union types "
138 "(if set before loading symbols) is %s.\n"),
142 /* A function to show whether C++ overload debugging is enabled. */
145 show_overload_debug (struct ui_file *file, int from_tty,
146 struct cmd_list_element *c, const char *value)
148 fprintf_filtered (file, _("Debugging of C++ overloading is %s.\n"),
152 /* A function to show the status of strict type checking. */
155 show_strict_type_checking (struct ui_file *file, int from_tty,
156 struct cmd_list_element *c, const char *value)
158 fprintf_filtered (file, _("Strict type checking is %s.\n"), value);
162 /* Allocate a new OBJFILE-associated type structure and fill it
163 with some defaults. Space for the type structure is allocated
164 on the objfile's objfile_obstack. */
167 alloc_type (struct objfile *objfile)
171 gdb_assert (objfile != NULL);
173 /* Alloc the structure and start off with all fields zeroed. */
174 type = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct type);
175 TYPE_MAIN_TYPE (type) = OBSTACK_ZALLOC (&objfile->objfile_obstack,
177 OBJSTAT (objfile, n_types++);
179 TYPE_OBJFILE_OWNED (type) = 1;
180 TYPE_OWNER (type).objfile = objfile;
182 /* Initialize the fields that might not be zero. */
184 TYPE_CODE (type) = TYPE_CODE_UNDEF;
185 TYPE_CHAIN (type) = type; /* Chain back to itself. */
190 /* Allocate a new GDBARCH-associated type structure and fill it
191 with some defaults. Space for the type structure is allocated
192 on the obstack associated with GDBARCH. */
195 alloc_type_arch (struct gdbarch *gdbarch)
199 gdb_assert (gdbarch != NULL);
201 /* Alloc the structure and start off with all fields zeroed. */
203 type = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct type);
204 TYPE_MAIN_TYPE (type) = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct main_type);
206 TYPE_OBJFILE_OWNED (type) = 0;
207 TYPE_OWNER (type).gdbarch = gdbarch;
209 /* Initialize the fields that might not be zero. */
211 TYPE_CODE (type) = TYPE_CODE_UNDEF;
212 TYPE_CHAIN (type) = type; /* Chain back to itself. */
217 /* If TYPE is objfile-associated, allocate a new type structure
218 associated with the same objfile. If TYPE is gdbarch-associated,
219 allocate a new type structure associated with the same gdbarch. */
222 alloc_type_copy (const struct type *type)
224 if (TYPE_OBJFILE_OWNED (type))
225 return alloc_type (TYPE_OWNER (type).objfile);
227 return alloc_type_arch (TYPE_OWNER (type).gdbarch);
230 /* If TYPE is gdbarch-associated, return that architecture.
231 If TYPE is objfile-associated, return that objfile's architecture. */
234 get_type_arch (const struct type *type)
236 struct gdbarch *arch;
238 if (TYPE_OBJFILE_OWNED (type))
239 arch = get_objfile_arch (TYPE_OWNER (type).objfile);
241 arch = TYPE_OWNER (type).gdbarch;
243 /* The ARCH can be NULL if TYPE is associated with neither an objfile nor
244 a gdbarch, however, this is very rare, and even then, in most cases
245 that get_type_arch is called, we assume that a non-NULL value is
247 gdb_assert (arch != NULL);
251 /* See gdbtypes.h. */
254 get_target_type (struct type *type)
258 type = TYPE_TARGET_TYPE (type);
260 type = check_typedef (type);
266 /* See gdbtypes.h. */
269 type_length_units (struct type *type)
271 struct gdbarch *arch = get_type_arch (type);
272 int unit_size = gdbarch_addressable_memory_unit_size (arch);
274 return TYPE_LENGTH (type) / unit_size;
277 /* Alloc a new type instance structure, fill it with some defaults,
278 and point it at OLDTYPE. Allocate the new type instance from the
279 same place as OLDTYPE. */
282 alloc_type_instance (struct type *oldtype)
286 /* Allocate the structure. */
288 if (! TYPE_OBJFILE_OWNED (oldtype))
289 type = GDBARCH_OBSTACK_ZALLOC (get_type_arch (oldtype), struct type);
291 type = OBSTACK_ZALLOC (&TYPE_OBJFILE (oldtype)->objfile_obstack,
294 TYPE_MAIN_TYPE (type) = TYPE_MAIN_TYPE (oldtype);
296 TYPE_CHAIN (type) = type; /* Chain back to itself for now. */
301 /* Clear all remnants of the previous type at TYPE, in preparation for
302 replacing it with something else. Preserve owner information. */
305 smash_type (struct type *type)
307 int objfile_owned = TYPE_OBJFILE_OWNED (type);
308 union type_owner owner = TYPE_OWNER (type);
310 memset (TYPE_MAIN_TYPE (type), 0, sizeof (struct main_type));
312 /* Restore owner information. */
313 TYPE_OBJFILE_OWNED (type) = objfile_owned;
314 TYPE_OWNER (type) = owner;
316 /* For now, delete the rings. */
317 TYPE_CHAIN (type) = type;
319 /* For now, leave the pointer/reference types alone. */
322 /* Lookup a pointer to a type TYPE. TYPEPTR, if nonzero, points
323 to a pointer to memory where the pointer type should be stored.
324 If *TYPEPTR is zero, update it to point to the pointer type we return.
325 We allocate new memory if needed. */
328 make_pointer_type (struct type *type, struct type **typeptr)
330 struct type *ntype; /* New type */
333 ntype = TYPE_POINTER_TYPE (type);
338 return ntype; /* Don't care about alloc,
339 and have new type. */
340 else if (*typeptr == 0)
342 *typeptr = ntype; /* Tracking alloc, and have new type. */
347 if (typeptr == 0 || *typeptr == 0) /* We'll need to allocate one. */
349 ntype = alloc_type_copy (type);
353 else /* We have storage, but need to reset it. */
356 chain = TYPE_CHAIN (ntype);
358 TYPE_CHAIN (ntype) = chain;
361 TYPE_TARGET_TYPE (ntype) = type;
362 TYPE_POINTER_TYPE (type) = ntype;
364 /* FIXME! Assumes the machine has only one representation for pointers! */
367 = gdbarch_ptr_bit (get_type_arch (type)) / TARGET_CHAR_BIT;
368 TYPE_CODE (ntype) = TYPE_CODE_PTR;
370 /* Mark pointers as unsigned. The target converts between pointers
371 and addresses (CORE_ADDRs) using gdbarch_pointer_to_address and
372 gdbarch_address_to_pointer. */
373 TYPE_UNSIGNED (ntype) = 1;
375 /* Update the length of all the other variants of this type. */
376 chain = TYPE_CHAIN (ntype);
377 while (chain != ntype)
379 TYPE_LENGTH (chain) = TYPE_LENGTH (ntype);
380 chain = TYPE_CHAIN (chain);
386 /* Given a type TYPE, return a type of pointers to that type.
387 May need to construct such a type if this is the first use. */
390 lookup_pointer_type (struct type *type)
392 return make_pointer_type (type, (struct type **) 0);
395 /* Lookup a C++ `reference' to a type TYPE. TYPEPTR, if nonzero,
396 points to a pointer to memory where the reference type should be
397 stored. If *TYPEPTR is zero, update it to point to the reference
398 type we return. We allocate new memory if needed. REFCODE denotes
399 the kind of reference type to lookup (lvalue or rvalue reference). */
402 make_reference_type (struct type *type, struct type **typeptr,
403 enum type_code refcode)
405 struct type *ntype; /* New type */
406 struct type **reftype;
409 gdb_assert (refcode == TYPE_CODE_REF || refcode == TYPE_CODE_RVALUE_REF);
411 ntype = (refcode == TYPE_CODE_REF ? TYPE_REFERENCE_TYPE (type)
412 : TYPE_RVALUE_REFERENCE_TYPE (type));
417 return ntype; /* Don't care about alloc,
418 and have new type. */
419 else if (*typeptr == 0)
421 *typeptr = ntype; /* Tracking alloc, and have new type. */
426 if (typeptr == 0 || *typeptr == 0) /* We'll need to allocate one. */
428 ntype = alloc_type_copy (type);
432 else /* We have storage, but need to reset it. */
435 chain = TYPE_CHAIN (ntype);
437 TYPE_CHAIN (ntype) = chain;
440 TYPE_TARGET_TYPE (ntype) = type;
441 reftype = (refcode == TYPE_CODE_REF ? &TYPE_REFERENCE_TYPE (type)
442 : &TYPE_RVALUE_REFERENCE_TYPE (type));
446 /* FIXME! Assume the machine has only one representation for
447 references, and that it matches the (only) representation for
450 TYPE_LENGTH (ntype) =
451 gdbarch_ptr_bit (get_type_arch (type)) / TARGET_CHAR_BIT;
452 TYPE_CODE (ntype) = refcode;
456 /* Update the length of all the other variants of this type. */
457 chain = TYPE_CHAIN (ntype);
458 while (chain != ntype)
460 TYPE_LENGTH (chain) = TYPE_LENGTH (ntype);
461 chain = TYPE_CHAIN (chain);
467 /* Same as above, but caller doesn't care about memory allocation
471 lookup_reference_type (struct type *type, enum type_code refcode)
473 return make_reference_type (type, (struct type **) 0, refcode);
476 /* Lookup the lvalue reference type for the type TYPE. */
479 lookup_lvalue_reference_type (struct type *type)
481 return lookup_reference_type (type, TYPE_CODE_REF);
484 /* Lookup the rvalue reference type for the type TYPE. */
487 lookup_rvalue_reference_type (struct type *type)
489 return lookup_reference_type (type, TYPE_CODE_RVALUE_REF);
492 /* Lookup a function type that returns type TYPE. TYPEPTR, if
493 nonzero, points to a pointer to memory where the function type
494 should be stored. If *TYPEPTR is zero, update it to point to the
495 function type we return. We allocate new memory if needed. */
498 make_function_type (struct type *type, struct type **typeptr)
500 struct type *ntype; /* New type */
502 if (typeptr == 0 || *typeptr == 0) /* We'll need to allocate one. */
504 ntype = alloc_type_copy (type);
508 else /* We have storage, but need to reset it. */
514 TYPE_TARGET_TYPE (ntype) = type;
516 TYPE_LENGTH (ntype) = 1;
517 TYPE_CODE (ntype) = TYPE_CODE_FUNC;
519 INIT_FUNC_SPECIFIC (ntype);
524 /* Given a type TYPE, return a type of functions that return that type.
525 May need to construct such a type if this is the first use. */
528 lookup_function_type (struct type *type)
530 return make_function_type (type, (struct type **) 0);
533 /* Given a type TYPE and argument types, return the appropriate
534 function type. If the final type in PARAM_TYPES is NULL, make a
538 lookup_function_type_with_arguments (struct type *type,
540 struct type **param_types)
542 struct type *fn = make_function_type (type, (struct type **) 0);
547 if (param_types[nparams - 1] == NULL)
550 TYPE_VARARGS (fn) = 1;
552 else if (TYPE_CODE (check_typedef (param_types[nparams - 1]))
556 /* Caller should have ensured this. */
557 gdb_assert (nparams == 0);
558 TYPE_PROTOTYPED (fn) = 1;
561 TYPE_PROTOTYPED (fn) = 1;
564 TYPE_NFIELDS (fn) = nparams;
566 = (struct field *) TYPE_ZALLOC (fn, nparams * sizeof (struct field));
567 for (i = 0; i < nparams; ++i)
568 TYPE_FIELD_TYPE (fn, i) = param_types[i];
573 /* Identify address space identifier by name --
574 return the integer flag defined in gdbtypes.h. */
577 address_space_name_to_int (struct gdbarch *gdbarch, char *space_identifier)
581 /* Check for known address space delimiters. */
582 if (!strcmp (space_identifier, "code"))
583 return TYPE_INSTANCE_FLAG_CODE_SPACE;
584 else if (!strcmp (space_identifier, "data"))
585 return TYPE_INSTANCE_FLAG_DATA_SPACE;
586 else if (gdbarch_address_class_name_to_type_flags_p (gdbarch)
587 && gdbarch_address_class_name_to_type_flags (gdbarch,
592 error (_("Unknown address space specifier: \"%s\""), space_identifier);
595 /* Identify address space identifier by integer flag as defined in
596 gdbtypes.h -- return the string version of the adress space name. */
599 address_space_int_to_name (struct gdbarch *gdbarch, int space_flag)
601 if (space_flag & TYPE_INSTANCE_FLAG_CODE_SPACE)
603 else if (space_flag & TYPE_INSTANCE_FLAG_DATA_SPACE)
605 else if ((space_flag & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL)
606 && gdbarch_address_class_type_flags_to_name_p (gdbarch))
607 return gdbarch_address_class_type_flags_to_name (gdbarch, space_flag);
612 /* Create a new type with instance flags NEW_FLAGS, based on TYPE.
614 If STORAGE is non-NULL, create the new type instance there.
615 STORAGE must be in the same obstack as TYPE. */
618 make_qualified_type (struct type *type, int new_flags,
619 struct type *storage)
626 if (TYPE_INSTANCE_FLAGS (ntype) == new_flags)
628 ntype = TYPE_CHAIN (ntype);
630 while (ntype != type);
632 /* Create a new type instance. */
634 ntype = alloc_type_instance (type);
637 /* If STORAGE was provided, it had better be in the same objfile
638 as TYPE. Otherwise, we can't link it into TYPE's cv chain:
639 if one objfile is freed and the other kept, we'd have
640 dangling pointers. */
641 gdb_assert (TYPE_OBJFILE (type) == TYPE_OBJFILE (storage));
644 TYPE_MAIN_TYPE (ntype) = TYPE_MAIN_TYPE (type);
645 TYPE_CHAIN (ntype) = ntype;
648 /* Pointers or references to the original type are not relevant to
650 TYPE_POINTER_TYPE (ntype) = (struct type *) 0;
651 TYPE_REFERENCE_TYPE (ntype) = (struct type *) 0;
653 /* Chain the new qualified type to the old type. */
654 TYPE_CHAIN (ntype) = TYPE_CHAIN (type);
655 TYPE_CHAIN (type) = ntype;
657 /* Now set the instance flags and return the new type. */
658 TYPE_INSTANCE_FLAGS (ntype) = new_flags;
660 /* Set length of new type to that of the original type. */
661 TYPE_LENGTH (ntype) = TYPE_LENGTH (type);
666 /* Make an address-space-delimited variant of a type -- a type that
667 is identical to the one supplied except that it has an address
668 space attribute attached to it (such as "code" or "data").
670 The space attributes "code" and "data" are for Harvard
671 architectures. The address space attributes are for architectures
672 which have alternately sized pointers or pointers with alternate
676 make_type_with_address_space (struct type *type, int space_flag)
678 int new_flags = ((TYPE_INSTANCE_FLAGS (type)
679 & ~(TYPE_INSTANCE_FLAG_CODE_SPACE
680 | TYPE_INSTANCE_FLAG_DATA_SPACE
681 | TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL))
684 return make_qualified_type (type, new_flags, NULL);
687 /* Make a "c-v" variant of a type -- a type that is identical to the
688 one supplied except that it may have const or volatile attributes
689 CNST is a flag for setting the const attribute
690 VOLTL is a flag for setting the volatile attribute
691 TYPE is the base type whose variant we are creating.
693 If TYPEPTR and *TYPEPTR are non-zero, then *TYPEPTR points to
694 storage to hold the new qualified type; *TYPEPTR and TYPE must be
695 in the same objfile. Otherwise, allocate fresh memory for the new
696 type whereever TYPE lives. If TYPEPTR is non-zero, set it to the
697 new type we construct. */
700 make_cv_type (int cnst, int voltl,
702 struct type **typeptr)
704 struct type *ntype; /* New type */
706 int new_flags = (TYPE_INSTANCE_FLAGS (type)
707 & ~(TYPE_INSTANCE_FLAG_CONST
708 | TYPE_INSTANCE_FLAG_VOLATILE));
711 new_flags |= TYPE_INSTANCE_FLAG_CONST;
714 new_flags |= TYPE_INSTANCE_FLAG_VOLATILE;
716 if (typeptr && *typeptr != NULL)
718 /* TYPE and *TYPEPTR must be in the same objfile. We can't have
719 a C-V variant chain that threads across objfiles: if one
720 objfile gets freed, then the other has a broken C-V chain.
722 This code used to try to copy over the main type from TYPE to
723 *TYPEPTR if they were in different objfiles, but that's
724 wrong, too: TYPE may have a field list or member function
725 lists, which refer to types of their own, etc. etc. The
726 whole shebang would need to be copied over recursively; you
727 can't have inter-objfile pointers. The only thing to do is
728 to leave stub types as stub types, and look them up afresh by
729 name each time you encounter them. */
730 gdb_assert (TYPE_OBJFILE (*typeptr) == TYPE_OBJFILE (type));
733 ntype = make_qualified_type (type, new_flags,
734 typeptr ? *typeptr : NULL);
742 /* Make a 'restrict'-qualified version of TYPE. */
745 make_restrict_type (struct type *type)
747 return make_qualified_type (type,
748 (TYPE_INSTANCE_FLAGS (type)
749 | TYPE_INSTANCE_FLAG_RESTRICT),
753 /* Make a type without const, volatile, or restrict. */
756 make_unqualified_type (struct type *type)
758 return make_qualified_type (type,
759 (TYPE_INSTANCE_FLAGS (type)
760 & ~(TYPE_INSTANCE_FLAG_CONST
761 | TYPE_INSTANCE_FLAG_VOLATILE
762 | TYPE_INSTANCE_FLAG_RESTRICT)),
766 /* Make a '_Atomic'-qualified version of TYPE. */
769 make_atomic_type (struct type *type)
771 return make_qualified_type (type,
772 (TYPE_INSTANCE_FLAGS (type)
773 | TYPE_INSTANCE_FLAG_ATOMIC),
777 /* Replace the contents of ntype with the type *type. This changes the
778 contents, rather than the pointer for TYPE_MAIN_TYPE (ntype); thus
779 the changes are propogated to all types in the TYPE_CHAIN.
781 In order to build recursive types, it's inevitable that we'll need
782 to update types in place --- but this sort of indiscriminate
783 smashing is ugly, and needs to be replaced with something more
784 controlled. TYPE_MAIN_TYPE is a step in this direction; it's not
785 clear if more steps are needed. */
788 replace_type (struct type *ntype, struct type *type)
792 /* These two types had better be in the same objfile. Otherwise,
793 the assignment of one type's main type structure to the other
794 will produce a type with references to objects (names; field
795 lists; etc.) allocated on an objfile other than its own. */
796 gdb_assert (TYPE_OBJFILE (ntype) == TYPE_OBJFILE (type));
798 *TYPE_MAIN_TYPE (ntype) = *TYPE_MAIN_TYPE (type);
800 /* The type length is not a part of the main type. Update it for
801 each type on the variant chain. */
805 /* Assert that this element of the chain has no address-class bits
806 set in its flags. Such type variants might have type lengths
807 which are supposed to be different from the non-address-class
808 variants. This assertion shouldn't ever be triggered because
809 symbol readers which do construct address-class variants don't
810 call replace_type(). */
811 gdb_assert (TYPE_ADDRESS_CLASS_ALL (chain) == 0);
813 TYPE_LENGTH (chain) = TYPE_LENGTH (type);
814 chain = TYPE_CHAIN (chain);
816 while (ntype != chain);
818 /* Assert that the two types have equivalent instance qualifiers.
819 This should be true for at least all of our debug readers. */
820 gdb_assert (TYPE_INSTANCE_FLAGS (ntype) == TYPE_INSTANCE_FLAGS (type));
823 /* Implement direct support for MEMBER_TYPE in GNU C++.
824 May need to construct such a type if this is the first use.
825 The TYPE is the type of the member. The DOMAIN is the type
826 of the aggregate that the member belongs to. */
829 lookup_memberptr_type (struct type *type, struct type *domain)
833 mtype = alloc_type_copy (type);
834 smash_to_memberptr_type (mtype, domain, type);
838 /* Return a pointer-to-method type, for a method of type TO_TYPE. */
841 lookup_methodptr_type (struct type *to_type)
845 mtype = alloc_type_copy (to_type);
846 smash_to_methodptr_type (mtype, to_type);
850 /* Allocate a stub method whose return type is TYPE. This apparently
851 happens for speed of symbol reading, since parsing out the
852 arguments to the method is cpu-intensive, the way we are doing it.
853 So, we will fill in arguments later. This always returns a fresh
857 allocate_stub_method (struct type *type)
861 mtype = alloc_type_copy (type);
862 TYPE_CODE (mtype) = TYPE_CODE_METHOD;
863 TYPE_LENGTH (mtype) = 1;
864 TYPE_STUB (mtype) = 1;
865 TYPE_TARGET_TYPE (mtype) = type;
866 /* TYPE_SELF_TYPE (mtype) = unknown yet */
870 /* See gdbtypes.h. */
873 operator== (const dynamic_prop &l, const dynamic_prop &r)
875 if (l.kind != r.kind)
883 return l.data.const_val == r.data.const_val;
884 case PROP_ADDR_OFFSET:
887 return l.data.baton == r.data.baton;
890 gdb_assert_not_reached ("unhandled dynamic_prop kind");
893 /* See gdbtypes.h. */
896 operator== (const range_bounds &l, const range_bounds &r)
898 #define FIELD_EQ(FIELD) (l.FIELD == r.FIELD)
900 return (FIELD_EQ (low)
902 && FIELD_EQ (flag_upper_bound_is_count)
903 && FIELD_EQ (flag_bound_evaluated));
908 /* Create a range type with a dynamic range from LOW_BOUND to
909 HIGH_BOUND, inclusive. See create_range_type for further details. */
912 create_range_type (struct type *result_type, struct type *index_type,
913 const struct dynamic_prop *low_bound,
914 const struct dynamic_prop *high_bound)
916 if (result_type == NULL)
917 result_type = alloc_type_copy (index_type);
918 TYPE_CODE (result_type) = TYPE_CODE_RANGE;
919 TYPE_TARGET_TYPE (result_type) = index_type;
920 if (TYPE_STUB (index_type))
921 TYPE_TARGET_STUB (result_type) = 1;
923 TYPE_LENGTH (result_type) = TYPE_LENGTH (check_typedef (index_type));
925 TYPE_RANGE_DATA (result_type) = (struct range_bounds *)
926 TYPE_ZALLOC (result_type, sizeof (struct range_bounds));
927 TYPE_RANGE_DATA (result_type)->low = *low_bound;
928 TYPE_RANGE_DATA (result_type)->high = *high_bound;
930 if (low_bound->kind == PROP_CONST && low_bound->data.const_val >= 0)
931 TYPE_UNSIGNED (result_type) = 1;
933 /* Ada allows the declaration of range types whose upper bound is
934 less than the lower bound, so checking the lower bound is not
935 enough. Make sure we do not mark a range type whose upper bound
936 is negative as unsigned. */
937 if (high_bound->kind == PROP_CONST && high_bound->data.const_val < 0)
938 TYPE_UNSIGNED (result_type) = 0;
943 /* Create a range type using either a blank type supplied in
944 RESULT_TYPE, or creating a new type, inheriting the objfile from
947 Indices will be of type INDEX_TYPE, and will range from LOW_BOUND
948 to HIGH_BOUND, inclusive.
950 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
951 sure it is TYPE_CODE_UNDEF before we bash it into a range type? */
954 create_static_range_type (struct type *result_type, struct type *index_type,
955 LONGEST low_bound, LONGEST high_bound)
957 struct dynamic_prop low, high;
959 low.kind = PROP_CONST;
960 low.data.const_val = low_bound;
962 high.kind = PROP_CONST;
963 high.data.const_val = high_bound;
965 result_type = create_range_type (result_type, index_type, &low, &high);
970 /* Predicate tests whether BOUNDS are static. Returns 1 if all bounds values
971 are static, otherwise returns 0. */
974 has_static_range (const struct range_bounds *bounds)
976 return (bounds->low.kind == PROP_CONST
977 && bounds->high.kind == PROP_CONST);
981 /* Set *LOWP and *HIGHP to the lower and upper bounds of discrete type
982 TYPE. Return 1 if type is a range type, 0 if it is discrete (and
983 bounds will fit in LONGEST), or -1 otherwise. */
986 get_discrete_bounds (struct type *type, LONGEST *lowp, LONGEST *highp)
988 type = check_typedef (type);
989 switch (TYPE_CODE (type))
991 case TYPE_CODE_RANGE:
992 *lowp = TYPE_LOW_BOUND (type);
993 *highp = TYPE_HIGH_BOUND (type);
996 if (TYPE_NFIELDS (type) > 0)
998 /* The enums may not be sorted by value, so search all
1002 *lowp = *highp = TYPE_FIELD_ENUMVAL (type, 0);
1003 for (i = 0; i < TYPE_NFIELDS (type); i++)
1005 if (TYPE_FIELD_ENUMVAL (type, i) < *lowp)
1006 *lowp = TYPE_FIELD_ENUMVAL (type, i);
1007 if (TYPE_FIELD_ENUMVAL (type, i) > *highp)
1008 *highp = TYPE_FIELD_ENUMVAL (type, i);
1011 /* Set unsigned indicator if warranted. */
1014 TYPE_UNSIGNED (type) = 1;
1023 case TYPE_CODE_BOOL:
1028 if (TYPE_LENGTH (type) > sizeof (LONGEST)) /* Too big */
1030 if (!TYPE_UNSIGNED (type))
1032 *lowp = -(1 << (TYPE_LENGTH (type) * TARGET_CHAR_BIT - 1));
1033 *highp = -*lowp - 1;
1037 case TYPE_CODE_CHAR:
1039 /* This round-about calculation is to avoid shifting by
1040 TYPE_LENGTH (type) * TARGET_CHAR_BIT, which will not work
1041 if TYPE_LENGTH (type) == sizeof (LONGEST). */
1042 *highp = 1 << (TYPE_LENGTH (type) * TARGET_CHAR_BIT - 1);
1043 *highp = (*highp - 1) | *highp;
1050 /* Assuming TYPE is a simple, non-empty array type, compute its upper
1051 and lower bound. Save the low bound into LOW_BOUND if not NULL.
1052 Save the high bound into HIGH_BOUND if not NULL.
1054 Return 1 if the operation was successful. Return zero otherwise,
1055 in which case the values of LOW_BOUND and HIGH_BOUNDS are unmodified.
1057 We now simply use get_discrete_bounds call to get the values
1058 of the low and high bounds.
1059 get_discrete_bounds can return three values:
1060 1, meaning that index is a range,
1061 0, meaning that index is a discrete type,
1062 or -1 for failure. */
1065 get_array_bounds (struct type *type, LONGEST *low_bound, LONGEST *high_bound)
1067 struct type *index = TYPE_INDEX_TYPE (type);
1075 res = get_discrete_bounds (index, &low, &high);
1079 /* Check if the array bounds are undefined. */
1081 && ((low_bound && TYPE_ARRAY_LOWER_BOUND_IS_UNDEFINED (type))
1082 || (high_bound && TYPE_ARRAY_UPPER_BOUND_IS_UNDEFINED (type))))
1094 /* Assuming that TYPE is a discrete type and VAL is a valid integer
1095 representation of a value of this type, save the corresponding
1096 position number in POS.
1098 Its differs from VAL only in the case of enumeration types. In
1099 this case, the position number of the value of the first listed
1100 enumeration literal is zero; the position number of the value of
1101 each subsequent enumeration literal is one more than that of its
1102 predecessor in the list.
1104 Return 1 if the operation was successful. Return zero otherwise,
1105 in which case the value of POS is unmodified.
1109 discrete_position (struct type *type, LONGEST val, LONGEST *pos)
1111 if (TYPE_CODE (type) == TYPE_CODE_ENUM)
1115 for (i = 0; i < TYPE_NFIELDS (type); i += 1)
1117 if (val == TYPE_FIELD_ENUMVAL (type, i))
1123 /* Invalid enumeration value. */
1133 /* Create an array type using either a blank type supplied in
1134 RESULT_TYPE, or creating a new type, inheriting the objfile from
1137 Elements will be of type ELEMENT_TYPE, the indices will be of type
1140 BYTE_STRIDE_PROP, when not NULL, provides the array's byte stride.
1141 This byte stride property is added to the resulting array type
1142 as a DYN_PROP_BYTE_STRIDE. As a consequence, the BYTE_STRIDE_PROP
1143 argument can only be used to create types that are objfile-owned
1144 (see add_dyn_prop), meaning that either this function must be called
1145 with an objfile-owned RESULT_TYPE, or an objfile-owned RANGE_TYPE.
1147 BIT_STRIDE is taken into account only when BYTE_STRIDE_PROP is NULL.
1148 If BIT_STRIDE is not zero, build a packed array type whose element
1149 size is BIT_STRIDE. Otherwise, ignore this parameter.
1151 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
1152 sure it is TYPE_CODE_UNDEF before we bash it into an array
1156 create_array_type_with_stride (struct type *result_type,
1157 struct type *element_type,
1158 struct type *range_type,
1159 struct dynamic_prop *byte_stride_prop,
1160 unsigned int bit_stride)
1162 if (byte_stride_prop != NULL
1163 && byte_stride_prop->kind == PROP_CONST)
1165 /* The byte stride is actually not dynamic. Pretend we were
1166 called with bit_stride set instead of byte_stride_prop.
1167 This will give us the same result type, while avoiding
1168 the need to handle this as a special case. */
1169 bit_stride = byte_stride_prop->data.const_val * 8;
1170 byte_stride_prop = NULL;
1173 if (result_type == NULL)
1174 result_type = alloc_type_copy (range_type);
1176 TYPE_CODE (result_type) = TYPE_CODE_ARRAY;
1177 TYPE_TARGET_TYPE (result_type) = element_type;
1178 if (byte_stride_prop == NULL
1179 && has_static_range (TYPE_RANGE_DATA (range_type))
1180 && (!type_not_associated (result_type)
1181 && !type_not_allocated (result_type)))
1183 LONGEST low_bound, high_bound;
1185 if (get_discrete_bounds (range_type, &low_bound, &high_bound) < 0)
1186 low_bound = high_bound = 0;
1187 element_type = check_typedef (element_type);
1188 /* Be careful when setting the array length. Ada arrays can be
1189 empty arrays with the high_bound being smaller than the low_bound.
1190 In such cases, the array length should be zero. */
1191 if (high_bound < low_bound)
1192 TYPE_LENGTH (result_type) = 0;
1193 else if (bit_stride > 0)
1194 TYPE_LENGTH (result_type) =
1195 (bit_stride * (high_bound - low_bound + 1) + 7) / 8;
1197 TYPE_LENGTH (result_type) =
1198 TYPE_LENGTH (element_type) * (high_bound - low_bound + 1);
1202 /* This type is dynamic and its length needs to be computed
1203 on demand. In the meantime, avoid leaving the TYPE_LENGTH
1204 undefined by setting it to zero. Although we are not expected
1205 to trust TYPE_LENGTH in this case, setting the size to zero
1206 allows us to avoid allocating objects of random sizes in case
1207 we accidently do. */
1208 TYPE_LENGTH (result_type) = 0;
1211 TYPE_NFIELDS (result_type) = 1;
1212 TYPE_FIELDS (result_type) =
1213 (struct field *) TYPE_ZALLOC (result_type, sizeof (struct field));
1214 TYPE_INDEX_TYPE (result_type) = range_type;
1215 if (byte_stride_prop != NULL)
1216 add_dyn_prop (DYN_PROP_BYTE_STRIDE, *byte_stride_prop, result_type);
1217 else if (bit_stride > 0)
1218 TYPE_FIELD_BITSIZE (result_type, 0) = bit_stride;
1220 /* TYPE_TARGET_STUB will take care of zero length arrays. */
1221 if (TYPE_LENGTH (result_type) == 0)
1222 TYPE_TARGET_STUB (result_type) = 1;
1227 /* Same as create_array_type_with_stride but with no bit_stride
1228 (BIT_STRIDE = 0), thus building an unpacked array. */
1231 create_array_type (struct type *result_type,
1232 struct type *element_type,
1233 struct type *range_type)
1235 return create_array_type_with_stride (result_type, element_type,
1236 range_type, NULL, 0);
1240 lookup_array_range_type (struct type *element_type,
1241 LONGEST low_bound, LONGEST high_bound)
1243 struct type *index_type;
1244 struct type *range_type;
1246 if (TYPE_OBJFILE_OWNED (element_type))
1247 index_type = objfile_type (TYPE_OWNER (element_type).objfile)->builtin_int;
1249 index_type = builtin_type (get_type_arch (element_type))->builtin_int;
1250 range_type = create_static_range_type (NULL, index_type,
1251 low_bound, high_bound);
1253 return create_array_type (NULL, element_type, range_type);
1256 /* Create a string type using either a blank type supplied in
1257 RESULT_TYPE, or creating a new type. String types are similar
1258 enough to array of char types that we can use create_array_type to
1259 build the basic type and then bash it into a string type.
1261 For fixed length strings, the range type contains 0 as the lower
1262 bound and the length of the string minus one as the upper bound.
1264 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
1265 sure it is TYPE_CODE_UNDEF before we bash it into a string
1269 create_string_type (struct type *result_type,
1270 struct type *string_char_type,
1271 struct type *range_type)
1273 result_type = create_array_type (result_type,
1276 TYPE_CODE (result_type) = TYPE_CODE_STRING;
1281 lookup_string_range_type (struct type *string_char_type,
1282 LONGEST low_bound, LONGEST high_bound)
1284 struct type *result_type;
1286 result_type = lookup_array_range_type (string_char_type,
1287 low_bound, high_bound);
1288 TYPE_CODE (result_type) = TYPE_CODE_STRING;
1293 create_set_type (struct type *result_type, struct type *domain_type)
1295 if (result_type == NULL)
1296 result_type = alloc_type_copy (domain_type);
1298 TYPE_CODE (result_type) = TYPE_CODE_SET;
1299 TYPE_NFIELDS (result_type) = 1;
1300 TYPE_FIELDS (result_type)
1301 = (struct field *) TYPE_ZALLOC (result_type, sizeof (struct field));
1303 if (!TYPE_STUB (domain_type))
1305 LONGEST low_bound, high_bound, bit_length;
1307 if (get_discrete_bounds (domain_type, &low_bound, &high_bound) < 0)
1308 low_bound = high_bound = 0;
1309 bit_length = high_bound - low_bound + 1;
1310 TYPE_LENGTH (result_type)
1311 = (bit_length + TARGET_CHAR_BIT - 1) / TARGET_CHAR_BIT;
1313 TYPE_UNSIGNED (result_type) = 1;
1315 TYPE_FIELD_TYPE (result_type, 0) = domain_type;
1320 /* Convert ARRAY_TYPE to a vector type. This may modify ARRAY_TYPE
1321 and any array types nested inside it. */
1324 make_vector_type (struct type *array_type)
1326 struct type *inner_array, *elt_type;
1329 /* Find the innermost array type, in case the array is
1330 multi-dimensional. */
1331 inner_array = array_type;
1332 while (TYPE_CODE (TYPE_TARGET_TYPE (inner_array)) == TYPE_CODE_ARRAY)
1333 inner_array = TYPE_TARGET_TYPE (inner_array);
1335 elt_type = TYPE_TARGET_TYPE (inner_array);
1336 if (TYPE_CODE (elt_type) == TYPE_CODE_INT)
1338 flags = TYPE_INSTANCE_FLAGS (elt_type) | TYPE_INSTANCE_FLAG_NOTTEXT;
1339 elt_type = make_qualified_type (elt_type, flags, NULL);
1340 TYPE_TARGET_TYPE (inner_array) = elt_type;
1343 TYPE_VECTOR (array_type) = 1;
1347 init_vector_type (struct type *elt_type, int n)
1349 struct type *array_type;
1351 array_type = lookup_array_range_type (elt_type, 0, n - 1);
1352 make_vector_type (array_type);
1356 /* Internal routine called by TYPE_SELF_TYPE to return the type that TYPE
1357 belongs to. In c++ this is the class of "this", but TYPE_THIS_TYPE is too
1358 confusing. "self" is a common enough replacement for "this".
1359 TYPE must be one of TYPE_CODE_METHODPTR, TYPE_CODE_MEMBERPTR, or
1360 TYPE_CODE_METHOD. */
1363 internal_type_self_type (struct type *type)
1365 switch (TYPE_CODE (type))
1367 case TYPE_CODE_METHODPTR:
1368 case TYPE_CODE_MEMBERPTR:
1369 if (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_NONE)
1371 gdb_assert (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_SELF_TYPE);
1372 return TYPE_MAIN_TYPE (type)->type_specific.self_type;
1373 case TYPE_CODE_METHOD:
1374 if (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_NONE)
1376 gdb_assert (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_FUNC);
1377 return TYPE_MAIN_TYPE (type)->type_specific.func_stuff->self_type;
1379 gdb_assert_not_reached ("bad type");
1383 /* Set the type of the class that TYPE belongs to.
1384 In c++ this is the class of "this".
1385 TYPE must be one of TYPE_CODE_METHODPTR, TYPE_CODE_MEMBERPTR, or
1386 TYPE_CODE_METHOD. */
1389 set_type_self_type (struct type *type, struct type *self_type)
1391 switch (TYPE_CODE (type))
1393 case TYPE_CODE_METHODPTR:
1394 case TYPE_CODE_MEMBERPTR:
1395 if (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_NONE)
1396 TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_SELF_TYPE;
1397 gdb_assert (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_SELF_TYPE);
1398 TYPE_MAIN_TYPE (type)->type_specific.self_type = self_type;
1400 case TYPE_CODE_METHOD:
1401 if (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_NONE)
1402 INIT_FUNC_SPECIFIC (type);
1403 gdb_assert (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_FUNC);
1404 TYPE_MAIN_TYPE (type)->type_specific.func_stuff->self_type = self_type;
1407 gdb_assert_not_reached ("bad type");
1411 /* Smash TYPE to be a type of pointers to members of SELF_TYPE with type
1412 TO_TYPE. A member pointer is a wierd thing -- it amounts to a
1413 typed offset into a struct, e.g. "an int at offset 8". A MEMBER
1414 TYPE doesn't include the offset (that's the value of the MEMBER
1415 itself), but does include the structure type into which it points
1418 When "smashing" the type, we preserve the objfile that the old type
1419 pointed to, since we aren't changing where the type is actually
1423 smash_to_memberptr_type (struct type *type, struct type *self_type,
1424 struct type *to_type)
1427 TYPE_CODE (type) = TYPE_CODE_MEMBERPTR;
1428 TYPE_TARGET_TYPE (type) = to_type;
1429 set_type_self_type (type, self_type);
1430 /* Assume that a data member pointer is the same size as a normal
1433 = gdbarch_ptr_bit (get_type_arch (to_type)) / TARGET_CHAR_BIT;
1436 /* Smash TYPE to be a type of pointer to methods type TO_TYPE.
1438 When "smashing" the type, we preserve the objfile that the old type
1439 pointed to, since we aren't changing where the type is actually
1443 smash_to_methodptr_type (struct type *type, struct type *to_type)
1446 TYPE_CODE (type) = TYPE_CODE_METHODPTR;
1447 TYPE_TARGET_TYPE (type) = to_type;
1448 set_type_self_type (type, TYPE_SELF_TYPE (to_type));
1449 TYPE_LENGTH (type) = cplus_method_ptr_size (to_type);
1452 /* Smash TYPE to be a type of method of SELF_TYPE with type TO_TYPE.
1453 METHOD just means `function that gets an extra "this" argument'.
1455 When "smashing" the type, we preserve the objfile that the old type
1456 pointed to, since we aren't changing where the type is actually
1460 smash_to_method_type (struct type *type, struct type *self_type,
1461 struct type *to_type, struct field *args,
1462 int nargs, int varargs)
1465 TYPE_CODE (type) = TYPE_CODE_METHOD;
1466 TYPE_TARGET_TYPE (type) = to_type;
1467 set_type_self_type (type, self_type);
1468 TYPE_FIELDS (type) = args;
1469 TYPE_NFIELDS (type) = nargs;
1471 TYPE_VARARGS (type) = 1;
1472 TYPE_LENGTH (type) = 1; /* In practice, this is never needed. */
1475 /* A wrapper of TYPE_NAME which calls error if the type is anonymous.
1476 Since GCC PR debug/47510 DWARF provides associated information to detect the
1477 anonymous class linkage name from its typedef.
1479 Parameter TYPE should not yet have CHECK_TYPEDEF applied, this function will
1483 type_name_or_error (struct type *type)
1485 struct type *saved_type = type;
1487 struct objfile *objfile;
1489 type = check_typedef (type);
1491 name = TYPE_NAME (type);
1495 name = TYPE_NAME (saved_type);
1496 objfile = TYPE_OBJFILE (saved_type);
1497 error (_("Invalid anonymous type %s [in module %s], GCC PR debug/47510 bug?"),
1498 name ? name : "<anonymous>",
1499 objfile ? objfile_name (objfile) : "<arch>");
1502 /* Lookup a typedef or primitive type named NAME, visible in lexical
1503 block BLOCK. If NOERR is nonzero, return zero if NAME is not
1504 suitably defined. */
1507 lookup_typename (const struct language_defn *language,
1508 struct gdbarch *gdbarch, const char *name,
1509 const struct block *block, int noerr)
1513 sym = lookup_symbol_in_language (name, block, VAR_DOMAIN,
1514 language->la_language, NULL).symbol;
1515 if (sym != NULL && SYMBOL_CLASS (sym) == LOC_TYPEDEF)
1516 return SYMBOL_TYPE (sym);
1520 error (_("No type named %s."), name);
1524 lookup_unsigned_typename (const struct language_defn *language,
1525 struct gdbarch *gdbarch, const char *name)
1527 char *uns = (char *) alloca (strlen (name) + 10);
1529 strcpy (uns, "unsigned ");
1530 strcpy (uns + 9, name);
1531 return lookup_typename (language, gdbarch, uns, (struct block *) NULL, 0);
1535 lookup_signed_typename (const struct language_defn *language,
1536 struct gdbarch *gdbarch, const char *name)
1539 char *uns = (char *) alloca (strlen (name) + 8);
1541 strcpy (uns, "signed ");
1542 strcpy (uns + 7, name);
1543 t = lookup_typename (language, gdbarch, uns, (struct block *) NULL, 1);
1544 /* If we don't find "signed FOO" just try again with plain "FOO". */
1547 return lookup_typename (language, gdbarch, name, (struct block *) NULL, 0);
1550 /* Lookup a structure type named "struct NAME",
1551 visible in lexical block BLOCK. */
1554 lookup_struct (const char *name, const struct block *block)
1558 sym = lookup_symbol (name, block, STRUCT_DOMAIN, 0).symbol;
1562 error (_("No struct type named %s."), name);
1564 if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_STRUCT)
1566 error (_("This context has class, union or enum %s, not a struct."),
1569 return (SYMBOL_TYPE (sym));
1572 /* Lookup a union type named "union NAME",
1573 visible in lexical block BLOCK. */
1576 lookup_union (const char *name, const struct block *block)
1581 sym = lookup_symbol (name, block, STRUCT_DOMAIN, 0).symbol;
1584 error (_("No union type named %s."), name);
1586 t = SYMBOL_TYPE (sym);
1588 if (TYPE_CODE (t) == TYPE_CODE_UNION)
1591 /* If we get here, it's not a union. */
1592 error (_("This context has class, struct or enum %s, not a union."),
1596 /* Lookup an enum type named "enum NAME",
1597 visible in lexical block BLOCK. */
1600 lookup_enum (const char *name, const struct block *block)
1604 sym = lookup_symbol (name, block, STRUCT_DOMAIN, 0).symbol;
1607 error (_("No enum type named %s."), name);
1609 if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_ENUM)
1611 error (_("This context has class, struct or union %s, not an enum."),
1614 return (SYMBOL_TYPE (sym));
1617 /* Lookup a template type named "template NAME<TYPE>",
1618 visible in lexical block BLOCK. */
1621 lookup_template_type (char *name, struct type *type,
1622 const struct block *block)
1625 char *nam = (char *)
1626 alloca (strlen (name) + strlen (TYPE_NAME (type)) + 4);
1630 strcat (nam, TYPE_NAME (type));
1631 strcat (nam, " >"); /* FIXME, extra space still introduced in gcc? */
1633 sym = lookup_symbol (nam, block, VAR_DOMAIN, 0).symbol;
1637 error (_("No template type named %s."), name);
1639 if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_STRUCT)
1641 error (_("This context has class, union or enum %s, not a struct."),
1644 return (SYMBOL_TYPE (sym));
1647 /* Given a type TYPE, lookup the type of the component of type named
1650 TYPE can be either a struct or union, or a pointer or reference to
1651 a struct or union. If it is a pointer or reference, its target
1652 type is automatically used. Thus '.' and '->' are interchangable,
1653 as specified for the definitions of the expression element types
1654 STRUCTOP_STRUCT and STRUCTOP_PTR.
1656 If NOERR is nonzero, return zero if NAME is not suitably defined.
1657 If NAME is the name of a baseclass type, return that type. */
1660 lookup_struct_elt_type (struct type *type, const char *name, int noerr)
1666 type = check_typedef (type);
1667 if (TYPE_CODE (type) != TYPE_CODE_PTR
1668 && TYPE_CODE (type) != TYPE_CODE_REF)
1670 type = TYPE_TARGET_TYPE (type);
1673 if (TYPE_CODE (type) != TYPE_CODE_STRUCT
1674 && TYPE_CODE (type) != TYPE_CODE_UNION)
1676 std::string type_name = type_to_string (type);
1677 error (_("Type %s is not a structure or union type."),
1678 type_name.c_str ());
1682 /* FIXME: This change put in by Michael seems incorrect for the case
1683 where the structure tag name is the same as the member name.
1684 I.e. when doing "ptype bell->bar" for "struct foo { int bar; int
1685 foo; } bell;" Disabled by fnf. */
1689 type_name = TYPE_NAME (type);
1690 if (type_name != NULL && strcmp (type_name, name) == 0)
1695 for (i = TYPE_NFIELDS (type) - 1; i >= TYPE_N_BASECLASSES (type); i--)
1697 const char *t_field_name = TYPE_FIELD_NAME (type, i);
1699 if (t_field_name && (strcmp_iw (t_field_name, name) == 0))
1701 return TYPE_FIELD_TYPE (type, i);
1703 else if (!t_field_name || *t_field_name == '\0')
1705 struct type *subtype
1706 = lookup_struct_elt_type (TYPE_FIELD_TYPE (type, i), name, 1);
1708 if (subtype != NULL)
1713 /* OK, it's not in this class. Recursively check the baseclasses. */
1714 for (i = TYPE_N_BASECLASSES (type) - 1; i >= 0; i--)
1718 t = lookup_struct_elt_type (TYPE_BASECLASS (type, i), name, 1);
1730 std::string type_name = type_to_string (type);
1731 error (_("Type %s has no component named %s."), type_name.c_str (), name);
1734 /* Store in *MAX the largest number representable by unsigned integer type
1738 get_unsigned_type_max (struct type *type, ULONGEST *max)
1742 type = check_typedef (type);
1743 gdb_assert (TYPE_CODE (type) == TYPE_CODE_INT && TYPE_UNSIGNED (type));
1744 gdb_assert (TYPE_LENGTH (type) <= sizeof (ULONGEST));
1746 /* Written this way to avoid overflow. */
1747 n = TYPE_LENGTH (type) * TARGET_CHAR_BIT;
1748 *max = ((((ULONGEST) 1 << (n - 1)) - 1) << 1) | 1;
1751 /* Store in *MIN, *MAX the smallest and largest numbers representable by
1752 signed integer type TYPE. */
1755 get_signed_type_minmax (struct type *type, LONGEST *min, LONGEST *max)
1759 type = check_typedef (type);
1760 gdb_assert (TYPE_CODE (type) == TYPE_CODE_INT && !TYPE_UNSIGNED (type));
1761 gdb_assert (TYPE_LENGTH (type) <= sizeof (LONGEST));
1763 n = TYPE_LENGTH (type) * TARGET_CHAR_BIT;
1764 *min = -((ULONGEST) 1 << (n - 1));
1765 *max = ((ULONGEST) 1 << (n - 1)) - 1;
1768 /* Internal routine called by TYPE_VPTR_FIELDNO to return the value of
1769 cplus_stuff.vptr_fieldno.
1771 cplus_stuff is initialized to cplus_struct_default which does not
1772 set vptr_fieldno to -1 for portability reasons (IWBN to use C99
1773 designated initializers). We cope with that here. */
1776 internal_type_vptr_fieldno (struct type *type)
1778 type = check_typedef (type);
1779 gdb_assert (TYPE_CODE (type) == TYPE_CODE_STRUCT
1780 || TYPE_CODE (type) == TYPE_CODE_UNION);
1781 if (!HAVE_CPLUS_STRUCT (type))
1783 return TYPE_RAW_CPLUS_SPECIFIC (type)->vptr_fieldno;
1786 /* Set the value of cplus_stuff.vptr_fieldno. */
1789 set_type_vptr_fieldno (struct type *type, int fieldno)
1791 type = check_typedef (type);
1792 gdb_assert (TYPE_CODE (type) == TYPE_CODE_STRUCT
1793 || TYPE_CODE (type) == TYPE_CODE_UNION);
1794 if (!HAVE_CPLUS_STRUCT (type))
1795 ALLOCATE_CPLUS_STRUCT_TYPE (type);
1796 TYPE_RAW_CPLUS_SPECIFIC (type)->vptr_fieldno = fieldno;
1799 /* Internal routine called by TYPE_VPTR_BASETYPE to return the value of
1800 cplus_stuff.vptr_basetype. */
1803 internal_type_vptr_basetype (struct type *type)
1805 type = check_typedef (type);
1806 gdb_assert (TYPE_CODE (type) == TYPE_CODE_STRUCT
1807 || TYPE_CODE (type) == TYPE_CODE_UNION);
1808 gdb_assert (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_CPLUS_STUFF);
1809 return TYPE_RAW_CPLUS_SPECIFIC (type)->vptr_basetype;
1812 /* Set the value of cplus_stuff.vptr_basetype. */
1815 set_type_vptr_basetype (struct type *type, struct type *basetype)
1817 type = check_typedef (type);
1818 gdb_assert (TYPE_CODE (type) == TYPE_CODE_STRUCT
1819 || TYPE_CODE (type) == TYPE_CODE_UNION);
1820 if (!HAVE_CPLUS_STRUCT (type))
1821 ALLOCATE_CPLUS_STRUCT_TYPE (type);
1822 TYPE_RAW_CPLUS_SPECIFIC (type)->vptr_basetype = basetype;
1825 /* Lookup the vptr basetype/fieldno values for TYPE.
1826 If found store vptr_basetype in *BASETYPEP if non-NULL, and return
1827 vptr_fieldno. Also, if found and basetype is from the same objfile,
1829 If not found, return -1 and ignore BASETYPEP.
1830 Callers should be aware that in some cases (for example,
1831 the type or one of its baseclasses is a stub type and we are
1832 debugging a .o file, or the compiler uses DWARF-2 and is not GCC),
1833 this function will not be able to find the
1834 virtual function table pointer, and vptr_fieldno will remain -1 and
1835 vptr_basetype will remain NULL or incomplete. */
1838 get_vptr_fieldno (struct type *type, struct type **basetypep)
1840 type = check_typedef (type);
1842 if (TYPE_VPTR_FIELDNO (type) < 0)
1846 /* We must start at zero in case the first (and only) baseclass
1847 is virtual (and hence we cannot share the table pointer). */
1848 for (i = 0; i < TYPE_N_BASECLASSES (type); i++)
1850 struct type *baseclass = check_typedef (TYPE_BASECLASS (type, i));
1852 struct type *basetype;
1854 fieldno = get_vptr_fieldno (baseclass, &basetype);
1857 /* If the type comes from a different objfile we can't cache
1858 it, it may have a different lifetime. PR 2384 */
1859 if (TYPE_OBJFILE (type) == TYPE_OBJFILE (basetype))
1861 set_type_vptr_fieldno (type, fieldno);
1862 set_type_vptr_basetype (type, basetype);
1865 *basetypep = basetype;
1876 *basetypep = TYPE_VPTR_BASETYPE (type);
1877 return TYPE_VPTR_FIELDNO (type);
1882 stub_noname_complaint (void)
1884 complaint (_("stub type has NULL name"));
1887 /* Return nonzero if TYPE has a DYN_PROP_BYTE_STRIDE dynamic property
1888 attached to it, and that property has a non-constant value. */
1891 array_type_has_dynamic_stride (struct type *type)
1893 struct dynamic_prop *prop = get_dyn_prop (DYN_PROP_BYTE_STRIDE, type);
1895 return (prop != NULL && prop->kind != PROP_CONST);
1898 /* Worker for is_dynamic_type. */
1901 is_dynamic_type_internal (struct type *type, int top_level)
1903 type = check_typedef (type);
1905 /* We only want to recognize references at the outermost level. */
1906 if (top_level && TYPE_CODE (type) == TYPE_CODE_REF)
1907 type = check_typedef (TYPE_TARGET_TYPE (type));
1909 /* Types that have a dynamic TYPE_DATA_LOCATION are considered
1910 dynamic, even if the type itself is statically defined.
1911 From a user's point of view, this may appear counter-intuitive;
1912 but it makes sense in this context, because the point is to determine
1913 whether any part of the type needs to be resolved before it can
1915 if (TYPE_DATA_LOCATION (type) != NULL
1916 && (TYPE_DATA_LOCATION_KIND (type) == PROP_LOCEXPR
1917 || TYPE_DATA_LOCATION_KIND (type) == PROP_LOCLIST))
1920 if (TYPE_ASSOCIATED_PROP (type))
1923 if (TYPE_ALLOCATED_PROP (type))
1926 switch (TYPE_CODE (type))
1928 case TYPE_CODE_RANGE:
1930 /* A range type is obviously dynamic if it has at least one
1931 dynamic bound. But also consider the range type to be
1932 dynamic when its subtype is dynamic, even if the bounds
1933 of the range type are static. It allows us to assume that
1934 the subtype of a static range type is also static. */
1935 return (!has_static_range (TYPE_RANGE_DATA (type))
1936 || is_dynamic_type_internal (TYPE_TARGET_TYPE (type), 0));
1939 case TYPE_CODE_ARRAY:
1941 gdb_assert (TYPE_NFIELDS (type) == 1);
1943 /* The array is dynamic if either the bounds are dynamic... */
1944 if (is_dynamic_type_internal (TYPE_INDEX_TYPE (type), 0))
1946 /* ... or the elements it contains have a dynamic contents... */
1947 if (is_dynamic_type_internal (TYPE_TARGET_TYPE (type), 0))
1949 /* ... or if it has a dynamic stride... */
1950 if (array_type_has_dynamic_stride (type))
1955 case TYPE_CODE_STRUCT:
1956 case TYPE_CODE_UNION:
1960 for (i = 0; i < TYPE_NFIELDS (type); ++i)
1961 if (!field_is_static (&TYPE_FIELD (type, i))
1962 && is_dynamic_type_internal (TYPE_FIELD_TYPE (type, i), 0))
1971 /* See gdbtypes.h. */
1974 is_dynamic_type (struct type *type)
1976 return is_dynamic_type_internal (type, 1);
1979 static struct type *resolve_dynamic_type_internal
1980 (struct type *type, struct property_addr_info *addr_stack, int top_level);
1982 /* Given a dynamic range type (dyn_range_type) and a stack of
1983 struct property_addr_info elements, return a static version
1986 static struct type *
1987 resolve_dynamic_range (struct type *dyn_range_type,
1988 struct property_addr_info *addr_stack)
1991 struct type *static_range_type, *static_target_type;
1992 const struct dynamic_prop *prop;
1993 struct dynamic_prop low_bound, high_bound;
1995 gdb_assert (TYPE_CODE (dyn_range_type) == TYPE_CODE_RANGE);
1997 prop = &TYPE_RANGE_DATA (dyn_range_type)->low;
1998 if (dwarf2_evaluate_property (prop, NULL, addr_stack, &value))
2000 low_bound.kind = PROP_CONST;
2001 low_bound.data.const_val = value;
2005 low_bound.kind = PROP_UNDEFINED;
2006 low_bound.data.const_val = 0;
2009 prop = &TYPE_RANGE_DATA (dyn_range_type)->high;
2010 if (dwarf2_evaluate_property (prop, NULL, addr_stack, &value))
2012 high_bound.kind = PROP_CONST;
2013 high_bound.data.const_val = value;
2015 if (TYPE_RANGE_DATA (dyn_range_type)->flag_upper_bound_is_count)
2016 high_bound.data.const_val
2017 = low_bound.data.const_val + high_bound.data.const_val - 1;
2021 high_bound.kind = PROP_UNDEFINED;
2022 high_bound.data.const_val = 0;
2026 = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (dyn_range_type),
2028 static_range_type = create_range_type (copy_type (dyn_range_type),
2030 &low_bound, &high_bound);
2031 TYPE_RANGE_DATA (static_range_type)->flag_bound_evaluated = 1;
2032 return static_range_type;
2035 /* Resolves dynamic bound values of an array type TYPE to static ones.
2036 ADDR_STACK is a stack of struct property_addr_info to be used
2037 if needed during the dynamic resolution. */
2039 static struct type *
2040 resolve_dynamic_array (struct type *type,
2041 struct property_addr_info *addr_stack)
2044 struct type *elt_type;
2045 struct type *range_type;
2046 struct type *ary_dim;
2047 struct dynamic_prop *prop;
2048 unsigned int bit_stride = 0;
2050 gdb_assert (TYPE_CODE (type) == TYPE_CODE_ARRAY);
2052 type = copy_type (type);
2055 range_type = check_typedef (TYPE_INDEX_TYPE (elt_type));
2056 range_type = resolve_dynamic_range (range_type, addr_stack);
2058 /* Resolve allocated/associated here before creating a new array type, which
2059 will update the length of the array accordingly. */
2060 prop = TYPE_ALLOCATED_PROP (type);
2061 if (prop != NULL && dwarf2_evaluate_property (prop, NULL, addr_stack, &value))
2063 TYPE_DYN_PROP_ADDR (prop) = value;
2064 TYPE_DYN_PROP_KIND (prop) = PROP_CONST;
2066 prop = TYPE_ASSOCIATED_PROP (type);
2067 if (prop != NULL && dwarf2_evaluate_property (prop, NULL, addr_stack, &value))
2069 TYPE_DYN_PROP_ADDR (prop) = value;
2070 TYPE_DYN_PROP_KIND (prop) = PROP_CONST;
2073 ary_dim = check_typedef (TYPE_TARGET_TYPE (elt_type));
2075 if (ary_dim != NULL && TYPE_CODE (ary_dim) == TYPE_CODE_ARRAY)
2076 elt_type = resolve_dynamic_array (ary_dim, addr_stack);
2078 elt_type = TYPE_TARGET_TYPE (type);
2080 prop = get_dyn_prop (DYN_PROP_BYTE_STRIDE, type);
2084 = dwarf2_evaluate_property (prop, NULL, addr_stack, &value);
2088 remove_dyn_prop (DYN_PROP_BYTE_STRIDE, type);
2089 bit_stride = (unsigned int) (value * 8);
2093 /* Could be a bug in our code, but it could also happen
2094 if the DWARF info is not correct. Issue a warning,
2095 and assume no byte/bit stride (leave bit_stride = 0). */
2096 warning (_("cannot determine array stride for type %s"),
2097 TYPE_NAME (type) ? TYPE_NAME (type) : "<no name>");
2101 bit_stride = TYPE_FIELD_BITSIZE (type, 0);
2103 return create_array_type_with_stride (type, elt_type, range_type, NULL,
2107 /* Resolve dynamic bounds of members of the union TYPE to static
2108 bounds. ADDR_STACK is a stack of struct property_addr_info
2109 to be used if needed during the dynamic resolution. */
2111 static struct type *
2112 resolve_dynamic_union (struct type *type,
2113 struct property_addr_info *addr_stack)
2115 struct type *resolved_type;
2117 unsigned int max_len = 0;
2119 gdb_assert (TYPE_CODE (type) == TYPE_CODE_UNION);
2121 resolved_type = copy_type (type);
2122 TYPE_FIELDS (resolved_type)
2123 = (struct field *) TYPE_ALLOC (resolved_type,
2124 TYPE_NFIELDS (resolved_type)
2125 * sizeof (struct field));
2126 memcpy (TYPE_FIELDS (resolved_type),
2128 TYPE_NFIELDS (resolved_type) * sizeof (struct field));
2129 for (i = 0; i < TYPE_NFIELDS (resolved_type); ++i)
2133 if (field_is_static (&TYPE_FIELD (type, i)))
2136 t = resolve_dynamic_type_internal (TYPE_FIELD_TYPE (resolved_type, i),
2138 TYPE_FIELD_TYPE (resolved_type, i) = t;
2139 if (TYPE_LENGTH (t) > max_len)
2140 max_len = TYPE_LENGTH (t);
2143 TYPE_LENGTH (resolved_type) = max_len;
2144 return resolved_type;
2147 /* Resolve dynamic bounds of members of the struct TYPE to static
2148 bounds. ADDR_STACK is a stack of struct property_addr_info to
2149 be used if needed during the dynamic resolution. */
2151 static struct type *
2152 resolve_dynamic_struct (struct type *type,
2153 struct property_addr_info *addr_stack)
2155 struct type *resolved_type;
2157 unsigned resolved_type_bit_length = 0;
2159 gdb_assert (TYPE_CODE (type) == TYPE_CODE_STRUCT);
2160 gdb_assert (TYPE_NFIELDS (type) > 0);
2162 resolved_type = copy_type (type);
2163 TYPE_FIELDS (resolved_type)
2164 = (struct field *) TYPE_ALLOC (resolved_type,
2165 TYPE_NFIELDS (resolved_type)
2166 * sizeof (struct field));
2167 memcpy (TYPE_FIELDS (resolved_type),
2169 TYPE_NFIELDS (resolved_type) * sizeof (struct field));
2170 for (i = 0; i < TYPE_NFIELDS (resolved_type); ++i)
2172 unsigned new_bit_length;
2173 struct property_addr_info pinfo;
2175 if (field_is_static (&TYPE_FIELD (type, i)))
2178 /* As we know this field is not a static field, the field's
2179 field_loc_kind should be FIELD_LOC_KIND_BITPOS. Verify
2180 this is the case, but only trigger a simple error rather
2181 than an internal error if that fails. While failing
2182 that verification indicates a bug in our code, the error
2183 is not severe enough to suggest to the user he stops
2184 his debugging session because of it. */
2185 if (TYPE_FIELD_LOC_KIND (type, i) != FIELD_LOC_KIND_BITPOS)
2186 error (_("Cannot determine struct field location"
2187 " (invalid location kind)"));
2189 pinfo.type = check_typedef (TYPE_FIELD_TYPE (type, i));
2190 pinfo.valaddr = addr_stack->valaddr;
2193 + (TYPE_FIELD_BITPOS (resolved_type, i) / TARGET_CHAR_BIT));
2194 pinfo.next = addr_stack;
2196 TYPE_FIELD_TYPE (resolved_type, i)
2197 = resolve_dynamic_type_internal (TYPE_FIELD_TYPE (resolved_type, i),
2199 gdb_assert (TYPE_FIELD_LOC_KIND (resolved_type, i)
2200 == FIELD_LOC_KIND_BITPOS);
2202 new_bit_length = TYPE_FIELD_BITPOS (resolved_type, i);
2203 if (TYPE_FIELD_BITSIZE (resolved_type, i) != 0)
2204 new_bit_length += TYPE_FIELD_BITSIZE (resolved_type, i);
2206 new_bit_length += (TYPE_LENGTH (TYPE_FIELD_TYPE (resolved_type, i))
2209 /* Normally, we would use the position and size of the last field
2210 to determine the size of the enclosing structure. But GCC seems
2211 to be encoding the position of some fields incorrectly when
2212 the struct contains a dynamic field that is not placed last.
2213 So we compute the struct size based on the field that has
2214 the highest position + size - probably the best we can do. */
2215 if (new_bit_length > resolved_type_bit_length)
2216 resolved_type_bit_length = new_bit_length;
2219 /* The length of a type won't change for fortran, but it does for C and Ada.
2220 For fortran the size of dynamic fields might change over time but not the
2221 type length of the structure. If we adapt it, we run into problems
2222 when calculating the element offset for arrays of structs. */
2223 if (current_language->la_language != language_fortran)
2224 TYPE_LENGTH (resolved_type)
2225 = (resolved_type_bit_length + TARGET_CHAR_BIT - 1) / TARGET_CHAR_BIT;
2227 /* The Ada language uses this field as a cache for static fixed types: reset
2228 it as RESOLVED_TYPE must have its own static fixed type. */
2229 TYPE_TARGET_TYPE (resolved_type) = NULL;
2231 return resolved_type;
2234 /* Worker for resolved_dynamic_type. */
2236 static struct type *
2237 resolve_dynamic_type_internal (struct type *type,
2238 struct property_addr_info *addr_stack,
2241 struct type *real_type = check_typedef (type);
2242 struct type *resolved_type = type;
2243 struct dynamic_prop *prop;
2246 if (!is_dynamic_type_internal (real_type, top_level))
2249 if (TYPE_CODE (type) == TYPE_CODE_TYPEDEF)
2251 resolved_type = copy_type (type);
2252 TYPE_TARGET_TYPE (resolved_type)
2253 = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (type), addr_stack,
2258 /* Before trying to resolve TYPE, make sure it is not a stub. */
2261 switch (TYPE_CODE (type))
2265 struct property_addr_info pinfo;
2267 pinfo.type = check_typedef (TYPE_TARGET_TYPE (type));
2268 pinfo.valaddr = NULL;
2269 if (addr_stack->valaddr != NULL)
2270 pinfo.addr = extract_typed_address (addr_stack->valaddr, type);
2272 pinfo.addr = read_memory_typed_address (addr_stack->addr, type);
2273 pinfo.next = addr_stack;
2275 resolved_type = copy_type (type);
2276 TYPE_TARGET_TYPE (resolved_type)
2277 = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (type),
2282 case TYPE_CODE_ARRAY:
2283 resolved_type = resolve_dynamic_array (type, addr_stack);
2286 case TYPE_CODE_RANGE:
2287 resolved_type = resolve_dynamic_range (type, addr_stack);
2290 case TYPE_CODE_UNION:
2291 resolved_type = resolve_dynamic_union (type, addr_stack);
2294 case TYPE_CODE_STRUCT:
2295 resolved_type = resolve_dynamic_struct (type, addr_stack);
2300 /* Resolve data_location attribute. */
2301 prop = TYPE_DATA_LOCATION (resolved_type);
2303 && dwarf2_evaluate_property (prop, NULL, addr_stack, &value))
2305 TYPE_DYN_PROP_ADDR (prop) = value;
2306 TYPE_DYN_PROP_KIND (prop) = PROP_CONST;
2309 return resolved_type;
2312 /* See gdbtypes.h */
2315 resolve_dynamic_type (struct type *type, const gdb_byte *valaddr,
2318 struct property_addr_info pinfo
2319 = {check_typedef (type), valaddr, addr, NULL};
2321 return resolve_dynamic_type_internal (type, &pinfo, 1);
2324 /* See gdbtypes.h */
2326 struct dynamic_prop *
2327 get_dyn_prop (enum dynamic_prop_node_kind prop_kind, const struct type *type)
2329 struct dynamic_prop_list *node = TYPE_DYN_PROP_LIST (type);
2331 while (node != NULL)
2333 if (node->prop_kind == prop_kind)
2340 /* See gdbtypes.h */
2343 add_dyn_prop (enum dynamic_prop_node_kind prop_kind, struct dynamic_prop prop,
2346 struct dynamic_prop_list *temp;
2348 gdb_assert (TYPE_OBJFILE_OWNED (type));
2350 temp = XOBNEW (&TYPE_OBJFILE (type)->objfile_obstack,
2351 struct dynamic_prop_list);
2352 temp->prop_kind = prop_kind;
2354 temp->next = TYPE_DYN_PROP_LIST (type);
2356 TYPE_DYN_PROP_LIST (type) = temp;
2359 /* Remove dynamic property from TYPE in case it exists. */
2362 remove_dyn_prop (enum dynamic_prop_node_kind prop_kind,
2365 struct dynamic_prop_list *prev_node, *curr_node;
2367 curr_node = TYPE_DYN_PROP_LIST (type);
2370 while (NULL != curr_node)
2372 if (curr_node->prop_kind == prop_kind)
2374 /* Update the linked list but don't free anything.
2375 The property was allocated on objstack and it is not known
2376 if we are on top of it. Nevertheless, everything is released
2377 when the complete objstack is freed. */
2378 if (NULL == prev_node)
2379 TYPE_DYN_PROP_LIST (type) = curr_node->next;
2381 prev_node->next = curr_node->next;
2386 prev_node = curr_node;
2387 curr_node = curr_node->next;
2391 /* Find the real type of TYPE. This function returns the real type,
2392 after removing all layers of typedefs, and completing opaque or stub
2393 types. Completion changes the TYPE argument, but stripping of
2396 Instance flags (e.g. const/volatile) are preserved as typedefs are
2397 stripped. If necessary a new qualified form of the underlying type
2400 NOTE: This will return a typedef if TYPE_TARGET_TYPE for the typedef has
2401 not been computed and we're either in the middle of reading symbols, or
2402 there was no name for the typedef in the debug info.
2404 NOTE: Lookup of opaque types can throw errors for invalid symbol files.
2405 QUITs in the symbol reading code can also throw.
2406 Thus this function can throw an exception.
2408 If TYPE is a TYPE_CODE_TYPEDEF, its length is updated to the length of
2411 If this is a stubbed struct (i.e. declared as struct foo *), see if
2412 we can find a full definition in some other file. If so, copy this
2413 definition, so we can use it in future. There used to be a comment
2414 (but not any code) that if we don't find a full definition, we'd
2415 set a flag so we don't spend time in the future checking the same
2416 type. That would be a mistake, though--we might load in more
2417 symbols which contain a full definition for the type. */
2420 check_typedef (struct type *type)
2422 struct type *orig_type = type;
2423 /* While we're removing typedefs, we don't want to lose qualifiers.
2424 E.g., const/volatile. */
2425 int instance_flags = TYPE_INSTANCE_FLAGS (type);
2429 while (TYPE_CODE (type) == TYPE_CODE_TYPEDEF)
2431 if (!TYPE_TARGET_TYPE (type))
2436 /* It is dangerous to call lookup_symbol if we are currently
2437 reading a symtab. Infinite recursion is one danger. */
2438 if (currently_reading_symtab)
2439 return make_qualified_type (type, instance_flags, NULL);
2441 name = TYPE_NAME (type);
2442 /* FIXME: shouldn't we look in STRUCT_DOMAIN and/or
2443 VAR_DOMAIN as appropriate? */
2446 stub_noname_complaint ();
2447 return make_qualified_type (type, instance_flags, NULL);
2449 sym = lookup_symbol (name, 0, STRUCT_DOMAIN, 0).symbol;
2451 TYPE_TARGET_TYPE (type) = SYMBOL_TYPE (sym);
2452 else /* TYPE_CODE_UNDEF */
2453 TYPE_TARGET_TYPE (type) = alloc_type_arch (get_type_arch (type));
2455 type = TYPE_TARGET_TYPE (type);
2457 /* Preserve the instance flags as we traverse down the typedef chain.
2459 Handling address spaces/classes is nasty, what do we do if there's a
2461 E.g., what if an outer typedef marks the type as class_1 and an inner
2462 typedef marks the type as class_2?
2463 This is the wrong place to do such error checking. We leave it to
2464 the code that created the typedef in the first place to flag the
2465 error. We just pick the outer address space (akin to letting the
2466 outer cast in a chain of casting win), instead of assuming
2467 "it can't happen". */
2469 const int ALL_SPACES = (TYPE_INSTANCE_FLAG_CODE_SPACE
2470 | TYPE_INSTANCE_FLAG_DATA_SPACE);
2471 const int ALL_CLASSES = TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL;
2472 int new_instance_flags = TYPE_INSTANCE_FLAGS (type);
2474 /* Treat code vs data spaces and address classes separately. */
2475 if ((instance_flags & ALL_SPACES) != 0)
2476 new_instance_flags &= ~ALL_SPACES;
2477 if ((instance_flags & ALL_CLASSES) != 0)
2478 new_instance_flags &= ~ALL_CLASSES;
2480 instance_flags |= new_instance_flags;
2484 /* If this is a struct/class/union with no fields, then check
2485 whether a full definition exists somewhere else. This is for
2486 systems where a type definition with no fields is issued for such
2487 types, instead of identifying them as stub types in the first
2490 if (TYPE_IS_OPAQUE (type)
2491 && opaque_type_resolution
2492 && !currently_reading_symtab)
2494 const char *name = TYPE_NAME (type);
2495 struct type *newtype;
2499 stub_noname_complaint ();
2500 return make_qualified_type (type, instance_flags, NULL);
2502 newtype = lookup_transparent_type (name);
2506 /* If the resolved type and the stub are in the same
2507 objfile, then replace the stub type with the real deal.
2508 But if they're in separate objfiles, leave the stub
2509 alone; we'll just look up the transparent type every time
2510 we call check_typedef. We can't create pointers between
2511 types allocated to different objfiles, since they may
2512 have different lifetimes. Trying to copy NEWTYPE over to
2513 TYPE's objfile is pointless, too, since you'll have to
2514 move over any other types NEWTYPE refers to, which could
2515 be an unbounded amount of stuff. */
2516 if (TYPE_OBJFILE (newtype) == TYPE_OBJFILE (type))
2517 type = make_qualified_type (newtype,
2518 TYPE_INSTANCE_FLAGS (type),
2524 /* Otherwise, rely on the stub flag being set for opaque/stubbed
2526 else if (TYPE_STUB (type) && !currently_reading_symtab)
2528 const char *name = TYPE_NAME (type);
2529 /* FIXME: shouldn't we look in STRUCT_DOMAIN and/or VAR_DOMAIN
2535 stub_noname_complaint ();
2536 return make_qualified_type (type, instance_flags, NULL);
2538 sym = lookup_symbol (name, 0, STRUCT_DOMAIN, 0).symbol;
2541 /* Same as above for opaque types, we can replace the stub
2542 with the complete type only if they are in the same
2544 if (TYPE_OBJFILE (SYMBOL_TYPE(sym)) == TYPE_OBJFILE (type))
2545 type = make_qualified_type (SYMBOL_TYPE (sym),
2546 TYPE_INSTANCE_FLAGS (type),
2549 type = SYMBOL_TYPE (sym);
2553 if (TYPE_TARGET_STUB (type))
2555 struct type *target_type = check_typedef (TYPE_TARGET_TYPE (type));
2557 if (TYPE_STUB (target_type) || TYPE_TARGET_STUB (target_type))
2559 /* Nothing we can do. */
2561 else if (TYPE_CODE (type) == TYPE_CODE_RANGE)
2563 TYPE_LENGTH (type) = TYPE_LENGTH (target_type);
2564 TYPE_TARGET_STUB (type) = 0;
2568 type = make_qualified_type (type, instance_flags, NULL);
2570 /* Cache TYPE_LENGTH for future use. */
2571 TYPE_LENGTH (orig_type) = TYPE_LENGTH (type);
2576 /* Parse a type expression in the string [P..P+LENGTH). If an error
2577 occurs, silently return a void type. */
2579 static struct type *
2580 safe_parse_type (struct gdbarch *gdbarch, char *p, int length)
2582 struct ui_file *saved_gdb_stderr;
2583 struct type *type = NULL; /* Initialize to keep gcc happy. */
2585 /* Suppress error messages. */
2586 saved_gdb_stderr = gdb_stderr;
2587 gdb_stderr = &null_stream;
2589 /* Call parse_and_eval_type() without fear of longjmp()s. */
2592 type = parse_and_eval_type (p, length);
2594 CATCH (except, RETURN_MASK_ERROR)
2596 type = builtin_type (gdbarch)->builtin_void;
2600 /* Stop suppressing error messages. */
2601 gdb_stderr = saved_gdb_stderr;
2606 /* Ugly hack to convert method stubs into method types.
2608 He ain't kiddin'. This demangles the name of the method into a
2609 string including argument types, parses out each argument type,
2610 generates a string casting a zero to that type, evaluates the
2611 string, and stuffs the resulting type into an argtype vector!!!
2612 Then it knows the type of the whole function (including argument
2613 types for overloading), which info used to be in the stab's but was
2614 removed to hack back the space required for them. */
2617 check_stub_method (struct type *type, int method_id, int signature_id)
2619 struct gdbarch *gdbarch = get_type_arch (type);
2621 char *mangled_name = gdb_mangle_name (type, method_id, signature_id);
2622 char *demangled_name = gdb_demangle (mangled_name,
2623 DMGL_PARAMS | DMGL_ANSI);
2624 char *argtypetext, *p;
2625 int depth = 0, argcount = 1;
2626 struct field *argtypes;
2629 /* Make sure we got back a function string that we can use. */
2631 p = strchr (demangled_name, '(');
2635 if (demangled_name == NULL || p == NULL)
2636 error (_("Internal: Cannot demangle mangled name `%s'."),
2639 /* Now, read in the parameters that define this type. */
2644 if (*p == '(' || *p == '<')
2648 else if (*p == ')' || *p == '>')
2652 else if (*p == ',' && depth == 0)
2660 /* If we read one argument and it was ``void'', don't count it. */
2661 if (startswith (argtypetext, "(void)"))
2664 /* We need one extra slot, for the THIS pointer. */
2666 argtypes = (struct field *)
2667 TYPE_ALLOC (type, (argcount + 1) * sizeof (struct field));
2670 /* Add THIS pointer for non-static methods. */
2671 f = TYPE_FN_FIELDLIST1 (type, method_id);
2672 if (TYPE_FN_FIELD_STATIC_P (f, signature_id))
2676 argtypes[0].type = lookup_pointer_type (type);
2680 if (*p != ')') /* () means no args, skip while. */
2685 if (depth <= 0 && (*p == ',' || *p == ')'))
2687 /* Avoid parsing of ellipsis, they will be handled below.
2688 Also avoid ``void'' as above. */
2689 if (strncmp (argtypetext, "...", p - argtypetext) != 0
2690 && strncmp (argtypetext, "void", p - argtypetext) != 0)
2692 argtypes[argcount].type =
2693 safe_parse_type (gdbarch, argtypetext, p - argtypetext);
2696 argtypetext = p + 1;
2699 if (*p == '(' || *p == '<')
2703 else if (*p == ')' || *p == '>')
2712 TYPE_FN_FIELD_PHYSNAME (f, signature_id) = mangled_name;
2714 /* Now update the old "stub" type into a real type. */
2715 mtype = TYPE_FN_FIELD_TYPE (f, signature_id);
2716 /* MTYPE may currently be a function (TYPE_CODE_FUNC).
2717 We want a method (TYPE_CODE_METHOD). */
2718 smash_to_method_type (mtype, type, TYPE_TARGET_TYPE (mtype),
2719 argtypes, argcount, p[-2] == '.');
2720 TYPE_STUB (mtype) = 0;
2721 TYPE_FN_FIELD_STUB (f, signature_id) = 0;
2723 xfree (demangled_name);
2726 /* This is the external interface to check_stub_method, above. This
2727 function unstubs all of the signatures for TYPE's METHOD_ID method
2728 name. After calling this function TYPE_FN_FIELD_STUB will be
2729 cleared for each signature and TYPE_FN_FIELDLIST_NAME will be
2732 This function unfortunately can not die until stabs do. */
2735 check_stub_method_group (struct type *type, int method_id)
2737 int len = TYPE_FN_FIELDLIST_LENGTH (type, method_id);
2738 struct fn_field *f = TYPE_FN_FIELDLIST1 (type, method_id);
2740 for (int j = 0; j < len; j++)
2742 if (TYPE_FN_FIELD_STUB (f, j))
2743 check_stub_method (type, method_id, j);
2747 /* Ensure it is in .rodata (if available) by workarounding GCC PR 44690. */
2748 const struct cplus_struct_type cplus_struct_default = { };
2751 allocate_cplus_struct_type (struct type *type)
2753 if (HAVE_CPLUS_STRUCT (type))
2754 /* Structure was already allocated. Nothing more to do. */
2757 TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_CPLUS_STUFF;
2758 TYPE_RAW_CPLUS_SPECIFIC (type) = (struct cplus_struct_type *)
2759 TYPE_ALLOC (type, sizeof (struct cplus_struct_type));
2760 *(TYPE_RAW_CPLUS_SPECIFIC (type)) = cplus_struct_default;
2761 set_type_vptr_fieldno (type, -1);
2764 const struct gnat_aux_type gnat_aux_default =
2767 /* Set the TYPE's type-specific kind to TYPE_SPECIFIC_GNAT_STUFF,
2768 and allocate the associated gnat-specific data. The gnat-specific
2769 data is also initialized to gnat_aux_default. */
2772 allocate_gnat_aux_type (struct type *type)
2774 TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_GNAT_STUFF;
2775 TYPE_GNAT_SPECIFIC (type) = (struct gnat_aux_type *)
2776 TYPE_ALLOC (type, sizeof (struct gnat_aux_type));
2777 *(TYPE_GNAT_SPECIFIC (type)) = gnat_aux_default;
2780 /* Helper function to initialize a newly allocated type. Set type code
2781 to CODE and initialize the type-specific fields accordingly. */
2784 set_type_code (struct type *type, enum type_code code)
2786 TYPE_CODE (type) = code;
2790 case TYPE_CODE_STRUCT:
2791 case TYPE_CODE_UNION:
2792 case TYPE_CODE_NAMESPACE:
2793 INIT_CPLUS_SPECIFIC (type);
2796 TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_FLOATFORMAT;
2798 case TYPE_CODE_FUNC:
2799 INIT_FUNC_SPECIFIC (type);
2804 /* Helper function to verify floating-point format and size.
2805 BIT is the type size in bits; if BIT equals -1, the size is
2806 determined by the floatformat. Returns size to be used. */
2809 verify_floatformat (int bit, const struct floatformat *floatformat)
2811 gdb_assert (floatformat != NULL);
2814 bit = floatformat->totalsize;
2816 gdb_assert (bit >= 0);
2817 gdb_assert (bit >= floatformat->totalsize);
2822 /* Return the floating-point format for a floating-point variable of
2825 const struct floatformat *
2826 floatformat_from_type (const struct type *type)
2828 gdb_assert (TYPE_CODE (type) == TYPE_CODE_FLT);
2829 gdb_assert (TYPE_FLOATFORMAT (type));
2830 return TYPE_FLOATFORMAT (type);
2833 /* Helper function to initialize the standard scalar types.
2835 If NAME is non-NULL, then it is used to initialize the type name.
2836 Note that NAME is not copied; it is required to have a lifetime at
2837 least as long as OBJFILE. */
2840 init_type (struct objfile *objfile, enum type_code code, int bit,
2845 type = alloc_type (objfile);
2846 set_type_code (type, code);
2847 gdb_assert ((bit % TARGET_CHAR_BIT) == 0);
2848 TYPE_LENGTH (type) = bit / TARGET_CHAR_BIT;
2849 TYPE_NAME (type) = name;
2854 /* Allocate a TYPE_CODE_ERROR type structure associated with OBJFILE,
2855 to use with variables that have no debug info. NAME is the type
2858 static struct type *
2859 init_nodebug_var_type (struct objfile *objfile, const char *name)
2861 return init_type (objfile, TYPE_CODE_ERROR, 0, name);
2864 /* Allocate a TYPE_CODE_INT type structure associated with OBJFILE.
2865 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
2866 the type's TYPE_UNSIGNED flag. NAME is the type name. */
2869 init_integer_type (struct objfile *objfile,
2870 int bit, int unsigned_p, const char *name)
2874 t = init_type (objfile, TYPE_CODE_INT, bit, name);
2876 TYPE_UNSIGNED (t) = 1;
2881 /* Allocate a TYPE_CODE_CHAR type structure associated with OBJFILE.
2882 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
2883 the type's TYPE_UNSIGNED flag. NAME is the type name. */
2886 init_character_type (struct objfile *objfile,
2887 int bit, int unsigned_p, const char *name)
2891 t = init_type (objfile, TYPE_CODE_CHAR, bit, name);
2893 TYPE_UNSIGNED (t) = 1;
2898 /* Allocate a TYPE_CODE_BOOL type structure associated with OBJFILE.
2899 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
2900 the type's TYPE_UNSIGNED flag. NAME is the type name. */
2903 init_boolean_type (struct objfile *objfile,
2904 int bit, int unsigned_p, const char *name)
2908 t = init_type (objfile, TYPE_CODE_BOOL, bit, name);
2910 TYPE_UNSIGNED (t) = 1;
2915 /* Allocate a TYPE_CODE_FLT type structure associated with OBJFILE.
2916 BIT is the type size in bits; if BIT equals -1, the size is
2917 determined by the floatformat. NAME is the type name. Set the
2918 TYPE_FLOATFORMAT from FLOATFORMATS. */
2921 init_float_type (struct objfile *objfile,
2922 int bit, const char *name,
2923 const struct floatformat **floatformats)
2925 struct gdbarch *gdbarch = get_objfile_arch (objfile);
2926 const struct floatformat *fmt = floatformats[gdbarch_byte_order (gdbarch)];
2929 bit = verify_floatformat (bit, fmt);
2930 t = init_type (objfile, TYPE_CODE_FLT, bit, name);
2931 TYPE_FLOATFORMAT (t) = fmt;
2936 /* Allocate a TYPE_CODE_DECFLOAT type structure associated with OBJFILE.
2937 BIT is the type size in bits. NAME is the type name. */
2940 init_decfloat_type (struct objfile *objfile, int bit, const char *name)
2944 t = init_type (objfile, TYPE_CODE_DECFLOAT, bit, name);
2948 /* Allocate a TYPE_CODE_COMPLEX type structure associated with OBJFILE.
2949 NAME is the type name. TARGET_TYPE is the component float type. */
2952 init_complex_type (struct objfile *objfile,
2953 const char *name, struct type *target_type)
2957 t = init_type (objfile, TYPE_CODE_COMPLEX,
2958 2 * TYPE_LENGTH (target_type) * TARGET_CHAR_BIT, name);
2959 TYPE_TARGET_TYPE (t) = target_type;
2963 /* Allocate a TYPE_CODE_PTR type structure associated with OBJFILE.
2964 BIT is the pointer type size in bits. NAME is the type name.
2965 TARGET_TYPE is the pointer target type. Always sets the pointer type's
2966 TYPE_UNSIGNED flag. */
2969 init_pointer_type (struct objfile *objfile,
2970 int bit, const char *name, struct type *target_type)
2974 t = init_type (objfile, TYPE_CODE_PTR, bit, name);
2975 TYPE_TARGET_TYPE (t) = target_type;
2976 TYPE_UNSIGNED (t) = 1;
2980 /* See gdbtypes.h. */
2983 type_raw_align (struct type *type)
2985 if (type->align_log2 != 0)
2986 return 1 << (type->align_log2 - 1);
2990 /* See gdbtypes.h. */
2993 type_align (struct type *type)
2995 /* Check alignment provided in the debug information. */
2996 unsigned raw_align = type_raw_align (type);
3000 /* Allow the architecture to provide an alignment. */
3001 struct gdbarch *arch = get_type_arch (type);
3002 ULONGEST align = gdbarch_type_align (arch, type);
3006 switch (TYPE_CODE (type))
3009 case TYPE_CODE_FUNC:
3010 case TYPE_CODE_FLAGS:
3012 case TYPE_CODE_RANGE:
3014 case TYPE_CODE_ENUM:
3016 case TYPE_CODE_RVALUE_REF:
3017 case TYPE_CODE_CHAR:
3018 case TYPE_CODE_BOOL:
3019 case TYPE_CODE_DECFLOAT:
3020 case TYPE_CODE_METHODPTR:
3021 case TYPE_CODE_MEMBERPTR:
3022 align = type_length_units (check_typedef (type));
3025 case TYPE_CODE_ARRAY:
3026 case TYPE_CODE_COMPLEX:
3027 case TYPE_CODE_TYPEDEF:
3028 align = type_align (TYPE_TARGET_TYPE (type));
3031 case TYPE_CODE_STRUCT:
3032 case TYPE_CODE_UNION:
3034 if (TYPE_NFIELDS (type) == 0)
3036 /* An empty struct has alignment 1. */
3040 for (unsigned i = 0; i < TYPE_NFIELDS (type); ++i)
3042 if (!field_is_static (&TYPE_FIELD (type, i)))
3044 ULONGEST f_align = type_align (TYPE_FIELD_TYPE (type, i));
3047 /* Don't pretend we know something we don't. */
3051 if (f_align > align)
3059 case TYPE_CODE_STRING:
3060 /* Not sure what to do here, and these can't appear in C or C++
3064 case TYPE_CODE_VOID:
3068 case TYPE_CODE_ERROR:
3069 case TYPE_CODE_METHOD:
3074 if ((align & (align - 1)) != 0)
3076 /* Not a power of 2, so pass. */
3083 /* See gdbtypes.h. */
3086 set_type_align (struct type *type, ULONGEST align)
3088 /* Must be a power of 2. Zero is ok. */
3089 gdb_assert ((align & (align - 1)) == 0);
3091 unsigned result = 0;
3098 if (result >= (1 << TYPE_ALIGN_BITS))
3101 type->align_log2 = result;
3106 /* Queries on types. */
3109 can_dereference (struct type *t)
3111 /* FIXME: Should we return true for references as well as
3113 t = check_typedef (t);
3116 && TYPE_CODE (t) == TYPE_CODE_PTR
3117 && TYPE_CODE (TYPE_TARGET_TYPE (t)) != TYPE_CODE_VOID);
3121 is_integral_type (struct type *t)
3123 t = check_typedef (t);
3126 && ((TYPE_CODE (t) == TYPE_CODE_INT)
3127 || (TYPE_CODE (t) == TYPE_CODE_ENUM)
3128 || (TYPE_CODE (t) == TYPE_CODE_FLAGS)
3129 || (TYPE_CODE (t) == TYPE_CODE_CHAR)
3130 || (TYPE_CODE (t) == TYPE_CODE_RANGE)
3131 || (TYPE_CODE (t) == TYPE_CODE_BOOL)));
3135 is_floating_type (struct type *t)
3137 t = check_typedef (t);
3140 && ((TYPE_CODE (t) == TYPE_CODE_FLT)
3141 || (TYPE_CODE (t) == TYPE_CODE_DECFLOAT)));
3144 /* Return true if TYPE is scalar. */
3147 is_scalar_type (struct type *type)
3149 type = check_typedef (type);
3151 switch (TYPE_CODE (type))
3153 case TYPE_CODE_ARRAY:
3154 case TYPE_CODE_STRUCT:
3155 case TYPE_CODE_UNION:
3157 case TYPE_CODE_STRING:
3164 /* Return true if T is scalar, or a composite type which in practice has
3165 the memory layout of a scalar type. E.g., an array or struct with only
3166 one scalar element inside it, or a union with only scalar elements. */
3169 is_scalar_type_recursive (struct type *t)
3171 t = check_typedef (t);
3173 if (is_scalar_type (t))
3175 /* Are we dealing with an array or string of known dimensions? */
3176 else if ((TYPE_CODE (t) == TYPE_CODE_ARRAY
3177 || TYPE_CODE (t) == TYPE_CODE_STRING) && TYPE_NFIELDS (t) == 1
3178 && TYPE_CODE (TYPE_INDEX_TYPE (t)) == TYPE_CODE_RANGE)
3180 LONGEST low_bound, high_bound;
3181 struct type *elt_type = check_typedef (TYPE_TARGET_TYPE (t));
3183 get_discrete_bounds (TYPE_INDEX_TYPE (t), &low_bound, &high_bound);
3185 return high_bound == low_bound && is_scalar_type_recursive (elt_type);
3187 /* Are we dealing with a struct with one element? */
3188 else if (TYPE_CODE (t) == TYPE_CODE_STRUCT && TYPE_NFIELDS (t) == 1)
3189 return is_scalar_type_recursive (TYPE_FIELD_TYPE (t, 0));
3190 else if (TYPE_CODE (t) == TYPE_CODE_UNION)
3192 int i, n = TYPE_NFIELDS (t);
3194 /* If all elements of the union are scalar, then the union is scalar. */
3195 for (i = 0; i < n; i++)
3196 if (!is_scalar_type_recursive (TYPE_FIELD_TYPE (t, i)))
3205 /* Return true is T is a class or a union. False otherwise. */
3208 class_or_union_p (const struct type *t)
3210 return (TYPE_CODE (t) == TYPE_CODE_STRUCT
3211 || TYPE_CODE (t) == TYPE_CODE_UNION);
3214 /* A helper function which returns true if types A and B represent the
3215 "same" class type. This is true if the types have the same main
3216 type, or the same name. */
3219 class_types_same_p (const struct type *a, const struct type *b)
3221 return (TYPE_MAIN_TYPE (a) == TYPE_MAIN_TYPE (b)
3222 || (TYPE_NAME (a) && TYPE_NAME (b)
3223 && !strcmp (TYPE_NAME (a), TYPE_NAME (b))));
3226 /* If BASE is an ancestor of DCLASS return the distance between them.
3227 otherwise return -1;
3231 class B: public A {};
3232 class C: public B {};
3235 distance_to_ancestor (A, A, 0) = 0
3236 distance_to_ancestor (A, B, 0) = 1
3237 distance_to_ancestor (A, C, 0) = 2
3238 distance_to_ancestor (A, D, 0) = 3
3240 If PUBLIC is 1 then only public ancestors are considered,
3241 and the function returns the distance only if BASE is a public ancestor
3245 distance_to_ancestor (A, D, 1) = -1. */
3248 distance_to_ancestor (struct type *base, struct type *dclass, int is_public)
3253 base = check_typedef (base);
3254 dclass = check_typedef (dclass);
3256 if (class_types_same_p (base, dclass))
3259 for (i = 0; i < TYPE_N_BASECLASSES (dclass); i++)
3261 if (is_public && ! BASETYPE_VIA_PUBLIC (dclass, i))
3264 d = distance_to_ancestor (base, TYPE_BASECLASS (dclass, i), is_public);
3272 /* Check whether BASE is an ancestor or base class or DCLASS
3273 Return 1 if so, and 0 if not.
3274 Note: If BASE and DCLASS are of the same type, this function
3275 will return 1. So for some class A, is_ancestor (A, A) will
3279 is_ancestor (struct type *base, struct type *dclass)
3281 return distance_to_ancestor (base, dclass, 0) >= 0;
3284 /* Like is_ancestor, but only returns true when BASE is a public
3285 ancestor of DCLASS. */
3288 is_public_ancestor (struct type *base, struct type *dclass)
3290 return distance_to_ancestor (base, dclass, 1) >= 0;
3293 /* A helper function for is_unique_ancestor. */
3296 is_unique_ancestor_worker (struct type *base, struct type *dclass,
3298 const gdb_byte *valaddr, int embedded_offset,
3299 CORE_ADDR address, struct value *val)
3303 base = check_typedef (base);
3304 dclass = check_typedef (dclass);
3306 for (i = 0; i < TYPE_N_BASECLASSES (dclass) && count < 2; ++i)
3311 iter = check_typedef (TYPE_BASECLASS (dclass, i));
3313 this_offset = baseclass_offset (dclass, i, valaddr, embedded_offset,
3316 if (class_types_same_p (base, iter))
3318 /* If this is the first subclass, set *OFFSET and set count
3319 to 1. Otherwise, if this is at the same offset as
3320 previous instances, do nothing. Otherwise, increment
3324 *offset = this_offset;
3327 else if (this_offset == *offset)
3335 count += is_unique_ancestor_worker (base, iter, offset,
3337 embedded_offset + this_offset,
3344 /* Like is_ancestor, but only returns true if BASE is a unique base
3345 class of the type of VAL. */
3348 is_unique_ancestor (struct type *base, struct value *val)
3352 return is_unique_ancestor_worker (base, value_type (val), &offset,
3353 value_contents_for_printing (val),
3354 value_embedded_offset (val),
3355 value_address (val), val) == 1;
3359 /* Overload resolution. */
3361 /* Return the sum of the rank of A with the rank of B. */
3364 sum_ranks (struct rank a, struct rank b)
3367 c.rank = a.rank + b.rank;
3368 c.subrank = a.subrank + b.subrank;
3372 /* Compare rank A and B and return:
3374 1 if a is better than b
3375 -1 if b is better than a. */
3378 compare_ranks (struct rank a, struct rank b)
3380 if (a.rank == b.rank)
3382 if (a.subrank == b.subrank)
3384 if (a.subrank < b.subrank)
3386 if (a.subrank > b.subrank)
3390 if (a.rank < b.rank)
3393 /* a.rank > b.rank */
3397 /* Functions for overload resolution begin here. */
3399 /* Compare two badness vectors A and B and return the result.
3400 0 => A and B are identical
3401 1 => A and B are incomparable
3402 2 => A is better than B
3403 3 => A is worse than B */
3406 compare_badness (const badness_vector &a, const badness_vector &b)
3410 short found_pos = 0; /* any positives in c? */
3411 short found_neg = 0; /* any negatives in c? */
3413 /* differing sizes => incomparable */
3414 if (a.size () != b.size ())
3417 /* Subtract b from a */
3418 for (i = 0; i < a.size (); i++)
3420 tmp = compare_ranks (b[i], a[i]);
3430 return 1; /* incomparable */
3432 return 3; /* A > B */
3438 return 2; /* A < B */
3440 return 0; /* A == B */
3444 /* Rank a function by comparing its parameter types (PARMS), to the
3445 types of an argument list (ARGS). Return the badness vector. This
3446 has ARGS.size() + 1 entries. */
3449 rank_function (gdb::array_view<type *> parms,
3450 gdb::array_view<value *> args)
3452 /* add 1 for the length-match rank. */
3454 bv.reserve (1 + args.size ());
3456 /* First compare the lengths of the supplied lists.
3457 If there is a mismatch, set it to a high value. */
3459 /* pai/1997-06-03 FIXME: when we have debug info about default
3460 arguments and ellipsis parameter lists, we should consider those
3461 and rank the length-match more finely. */
3463 bv.push_back ((args.size () != parms.size ())
3464 ? LENGTH_MISMATCH_BADNESS
3465 : EXACT_MATCH_BADNESS);
3467 /* Now rank all the parameters of the candidate function. */
3468 size_t min_len = std::min (parms.size (), args.size ());
3470 for (size_t i = 0; i < min_len; i++)
3471 bv.push_back (rank_one_type (parms[i], value_type (args[i]),
3474 /* If more arguments than parameters, add dummy entries. */
3475 for (size_t i = min_len; i < args.size (); i++)
3476 bv.push_back (TOO_FEW_PARAMS_BADNESS);
3481 /* Compare the names of two integer types, assuming that any sign
3482 qualifiers have been checked already. We do it this way because
3483 there may be an "int" in the name of one of the types. */
3486 integer_types_same_name_p (const char *first, const char *second)
3488 int first_p, second_p;
3490 /* If both are shorts, return 1; if neither is a short, keep
3492 first_p = (strstr (first, "short") != NULL);
3493 second_p = (strstr (second, "short") != NULL);
3494 if (first_p && second_p)
3496 if (first_p || second_p)
3499 /* Likewise for long. */
3500 first_p = (strstr (first, "long") != NULL);
3501 second_p = (strstr (second, "long") != NULL);
3502 if (first_p && second_p)
3504 if (first_p || second_p)
3507 /* Likewise for char. */
3508 first_p = (strstr (first, "char") != NULL);
3509 second_p = (strstr (second, "char") != NULL);
3510 if (first_p && second_p)
3512 if (first_p || second_p)
3515 /* They must both be ints. */
3519 /* Compares type A to type B. Returns true if they represent the same
3520 type, false otherwise. */
3523 types_equal (struct type *a, struct type *b)
3525 /* Identical type pointers. */
3526 /* However, this still doesn't catch all cases of same type for b
3527 and a. The reason is that builtin types are different from
3528 the same ones constructed from the object. */
3532 /* Resolve typedefs */
3533 if (TYPE_CODE (a) == TYPE_CODE_TYPEDEF)
3534 a = check_typedef (a);
3535 if (TYPE_CODE (b) == TYPE_CODE_TYPEDEF)
3536 b = check_typedef (b);
3538 /* If after resolving typedefs a and b are not of the same type
3539 code then they are not equal. */
3540 if (TYPE_CODE (a) != TYPE_CODE (b))
3543 /* If a and b are both pointers types or both reference types then
3544 they are equal of the same type iff the objects they refer to are
3545 of the same type. */
3546 if (TYPE_CODE (a) == TYPE_CODE_PTR
3547 || TYPE_CODE (a) == TYPE_CODE_REF)
3548 return types_equal (TYPE_TARGET_TYPE (a),
3549 TYPE_TARGET_TYPE (b));
3551 /* Well, damnit, if the names are exactly the same, I'll say they
3552 are exactly the same. This happens when we generate method
3553 stubs. The types won't point to the same address, but they
3554 really are the same. */
3556 if (TYPE_NAME (a) && TYPE_NAME (b)
3557 && strcmp (TYPE_NAME (a), TYPE_NAME (b)) == 0)
3560 /* Check if identical after resolving typedefs. */
3564 /* Two function types are equal if their argument and return types
3566 if (TYPE_CODE (a) == TYPE_CODE_FUNC)
3570 if (TYPE_NFIELDS (a) != TYPE_NFIELDS (b))
3573 if (!types_equal (TYPE_TARGET_TYPE (a), TYPE_TARGET_TYPE (b)))
3576 for (i = 0; i < TYPE_NFIELDS (a); ++i)
3577 if (!types_equal (TYPE_FIELD_TYPE (a, i), TYPE_FIELD_TYPE (b, i)))
3586 /* Deep comparison of types. */
3588 /* An entry in the type-equality bcache. */
3590 struct type_equality_entry
3592 type_equality_entry (struct type *t1, struct type *t2)
3598 struct type *type1, *type2;
3601 /* A helper function to compare two strings. Returns true if they are
3602 the same, false otherwise. Handles NULLs properly. */
3605 compare_maybe_null_strings (const char *s, const char *t)
3607 if (s == NULL || t == NULL)
3609 return strcmp (s, t) == 0;
3612 /* A helper function for check_types_worklist that checks two types for
3613 "deep" equality. Returns true if the types are considered the
3614 same, false otherwise. */
3617 check_types_equal (struct type *type1, struct type *type2,
3618 std::vector<type_equality_entry> *worklist)
3620 type1 = check_typedef (type1);
3621 type2 = check_typedef (type2);
3626 if (TYPE_CODE (type1) != TYPE_CODE (type2)
3627 || TYPE_LENGTH (type1) != TYPE_LENGTH (type2)
3628 || TYPE_UNSIGNED (type1) != TYPE_UNSIGNED (type2)
3629 || TYPE_NOSIGN (type1) != TYPE_NOSIGN (type2)
3630 || TYPE_VARARGS (type1) != TYPE_VARARGS (type2)
3631 || TYPE_VECTOR (type1) != TYPE_VECTOR (type2)
3632 || TYPE_NOTTEXT (type1) != TYPE_NOTTEXT (type2)
3633 || TYPE_INSTANCE_FLAGS (type1) != TYPE_INSTANCE_FLAGS (type2)
3634 || TYPE_NFIELDS (type1) != TYPE_NFIELDS (type2))
3637 if (!compare_maybe_null_strings (TYPE_NAME (type1), TYPE_NAME (type2)))
3639 if (!compare_maybe_null_strings (TYPE_NAME (type1), TYPE_NAME (type2)))
3642 if (TYPE_CODE (type1) == TYPE_CODE_RANGE)
3644 if (*TYPE_RANGE_DATA (type1) != *TYPE_RANGE_DATA (type2))
3651 for (i = 0; i < TYPE_NFIELDS (type1); ++i)
3653 const struct field *field1 = &TYPE_FIELD (type1, i);
3654 const struct field *field2 = &TYPE_FIELD (type2, i);
3656 if (FIELD_ARTIFICIAL (*field1) != FIELD_ARTIFICIAL (*field2)
3657 || FIELD_BITSIZE (*field1) != FIELD_BITSIZE (*field2)
3658 || FIELD_LOC_KIND (*field1) != FIELD_LOC_KIND (*field2))
3660 if (!compare_maybe_null_strings (FIELD_NAME (*field1),
3661 FIELD_NAME (*field2)))
3663 switch (FIELD_LOC_KIND (*field1))
3665 case FIELD_LOC_KIND_BITPOS:
3666 if (FIELD_BITPOS (*field1) != FIELD_BITPOS (*field2))
3669 case FIELD_LOC_KIND_ENUMVAL:
3670 if (FIELD_ENUMVAL (*field1) != FIELD_ENUMVAL (*field2))
3673 case FIELD_LOC_KIND_PHYSADDR:
3674 if (FIELD_STATIC_PHYSADDR (*field1)
3675 != FIELD_STATIC_PHYSADDR (*field2))
3678 case FIELD_LOC_KIND_PHYSNAME:
3679 if (!compare_maybe_null_strings (FIELD_STATIC_PHYSNAME (*field1),
3680 FIELD_STATIC_PHYSNAME (*field2)))
3683 case FIELD_LOC_KIND_DWARF_BLOCK:
3685 struct dwarf2_locexpr_baton *block1, *block2;
3687 block1 = FIELD_DWARF_BLOCK (*field1);
3688 block2 = FIELD_DWARF_BLOCK (*field2);
3689 if (block1->per_cu != block2->per_cu
3690 || block1->size != block2->size
3691 || memcmp (block1->data, block2->data, block1->size) != 0)
3696 internal_error (__FILE__, __LINE__, _("Unsupported field kind "
3697 "%d by check_types_equal"),
3698 FIELD_LOC_KIND (*field1));
3701 worklist->emplace_back (FIELD_TYPE (*field1), FIELD_TYPE (*field2));
3705 if (TYPE_TARGET_TYPE (type1) != NULL)
3707 if (TYPE_TARGET_TYPE (type2) == NULL)
3710 worklist->emplace_back (TYPE_TARGET_TYPE (type1),
3711 TYPE_TARGET_TYPE (type2));
3713 else if (TYPE_TARGET_TYPE (type2) != NULL)
3719 /* Check types on a worklist for equality. Returns false if any pair
3720 is not equal, true if they are all considered equal. */
3723 check_types_worklist (std::vector<type_equality_entry> *worklist,
3724 struct bcache *cache)
3726 while (!worklist->empty ())
3730 struct type_equality_entry entry = std::move (worklist->back ());
3731 worklist->pop_back ();
3733 /* If the type pair has already been visited, we know it is
3735 cache->insert (&entry, sizeof (entry), &added);
3739 if (!check_types_equal (entry.type1, entry.type2, worklist))
3746 /* Return true if types TYPE1 and TYPE2 are equal, as determined by a
3747 "deep comparison". Otherwise return false. */
3750 types_deeply_equal (struct type *type1, struct type *type2)
3752 std::vector<type_equality_entry> worklist;
3754 gdb_assert (type1 != NULL && type2 != NULL);
3756 /* Early exit for the simple case. */
3760 struct bcache cache (nullptr, nullptr);
3761 worklist.emplace_back (type1, type2);
3762 return check_types_worklist (&worklist, &cache);
3765 /* Allocated status of type TYPE. Return zero if type TYPE is allocated.
3766 Otherwise return one. */
3769 type_not_allocated (const struct type *type)
3771 struct dynamic_prop *prop = TYPE_ALLOCATED_PROP (type);
3773 return (prop && TYPE_DYN_PROP_KIND (prop) == PROP_CONST
3774 && !TYPE_DYN_PROP_ADDR (prop));
3777 /* Associated status of type TYPE. Return zero if type TYPE is associated.
3778 Otherwise return one. */
3781 type_not_associated (const struct type *type)
3783 struct dynamic_prop *prop = TYPE_ASSOCIATED_PROP (type);
3785 return (prop && TYPE_DYN_PROP_KIND (prop) == PROP_CONST
3786 && !TYPE_DYN_PROP_ADDR (prop));
3789 /* rank_one_type helper for when PARM's type code is TYPE_CODE_PTR. */
3792 rank_one_type_parm_ptr (struct type *parm, struct type *arg, struct value *value)
3794 struct rank rank = {0,0};
3796 switch (TYPE_CODE (arg))
3800 /* Allowed pointer conversions are:
3801 (a) pointer to void-pointer conversion. */
3802 if (TYPE_CODE (TYPE_TARGET_TYPE (parm)) == TYPE_CODE_VOID)
3803 return VOID_PTR_CONVERSION_BADNESS;
3805 /* (b) pointer to ancestor-pointer conversion. */
3806 rank.subrank = distance_to_ancestor (TYPE_TARGET_TYPE (parm),
3807 TYPE_TARGET_TYPE (arg),
3809 if (rank.subrank >= 0)
3810 return sum_ranks (BASE_PTR_CONVERSION_BADNESS, rank);
3812 return INCOMPATIBLE_TYPE_BADNESS;
3813 case TYPE_CODE_ARRAY:
3815 struct type *t1 = TYPE_TARGET_TYPE (parm);
3816 struct type *t2 = TYPE_TARGET_TYPE (arg);
3818 if (types_equal (t1, t2))
3820 /* Make sure they are CV equal. */
3821 if (TYPE_CONST (t1) != TYPE_CONST (t2))
3822 rank.subrank |= CV_CONVERSION_CONST;
3823 if (TYPE_VOLATILE (t1) != TYPE_VOLATILE (t2))
3824 rank.subrank |= CV_CONVERSION_VOLATILE;
3825 if (rank.subrank != 0)
3826 return sum_ranks (CV_CONVERSION_BADNESS, rank);
3827 return EXACT_MATCH_BADNESS;
3829 return INCOMPATIBLE_TYPE_BADNESS;
3831 case TYPE_CODE_FUNC:
3832 return rank_one_type (TYPE_TARGET_TYPE (parm), arg, NULL);
3834 if (value != NULL && TYPE_CODE (value_type (value)) == TYPE_CODE_INT)
3836 if (value_as_long (value) == 0)
3838 /* Null pointer conversion: allow it to be cast to a pointer.
3839 [4.10.1 of C++ standard draft n3290] */
3840 return NULL_POINTER_CONVERSION_BADNESS;
3844 /* If type checking is disabled, allow the conversion. */
3845 if (!strict_type_checking)
3846 return NS_INTEGER_POINTER_CONVERSION_BADNESS;
3850 case TYPE_CODE_ENUM:
3851 case TYPE_CODE_FLAGS:
3852 case TYPE_CODE_CHAR:
3853 case TYPE_CODE_RANGE:
3854 case TYPE_CODE_BOOL:
3856 return INCOMPATIBLE_TYPE_BADNESS;
3860 /* rank_one_type helper for when PARM's type code is TYPE_CODE_ARRAY. */
3863 rank_one_type_parm_array (struct type *parm, struct type *arg, struct value *value)
3865 switch (TYPE_CODE (arg))
3868 case TYPE_CODE_ARRAY:
3869 return rank_one_type (TYPE_TARGET_TYPE (parm),
3870 TYPE_TARGET_TYPE (arg), NULL);
3872 return INCOMPATIBLE_TYPE_BADNESS;
3876 /* rank_one_type helper for when PARM's type code is TYPE_CODE_FUNC. */
3879 rank_one_type_parm_func (struct type *parm, struct type *arg, struct value *value)
3881 switch (TYPE_CODE (arg))
3883 case TYPE_CODE_PTR: /* funcptr -> func */
3884 return rank_one_type (parm, TYPE_TARGET_TYPE (arg), NULL);
3886 return INCOMPATIBLE_TYPE_BADNESS;
3890 /* rank_one_type helper for when PARM's type code is TYPE_CODE_INT. */
3893 rank_one_type_parm_int (struct type *parm, struct type *arg, struct value *value)
3895 switch (TYPE_CODE (arg))
3898 if (TYPE_LENGTH (arg) == TYPE_LENGTH (parm))
3900 /* Deal with signed, unsigned, and plain chars and
3901 signed and unsigned ints. */
3902 if (TYPE_NOSIGN (parm))
3904 /* This case only for character types. */
3905 if (TYPE_NOSIGN (arg))
3906 return EXACT_MATCH_BADNESS; /* plain char -> plain char */
3907 else /* signed/unsigned char -> plain char */
3908 return INTEGER_CONVERSION_BADNESS;
3910 else if (TYPE_UNSIGNED (parm))
3912 if (TYPE_UNSIGNED (arg))
3914 /* unsigned int -> unsigned int, or
3915 unsigned long -> unsigned long */
3916 if (integer_types_same_name_p (TYPE_NAME (parm),
3918 return EXACT_MATCH_BADNESS;
3919 else if (integer_types_same_name_p (TYPE_NAME (arg),
3921 && integer_types_same_name_p (TYPE_NAME (parm),
3923 /* unsigned int -> unsigned long */
3924 return INTEGER_PROMOTION_BADNESS;
3926 /* unsigned long -> unsigned int */
3927 return INTEGER_CONVERSION_BADNESS;
3931 if (integer_types_same_name_p (TYPE_NAME (arg),
3933 && integer_types_same_name_p (TYPE_NAME (parm),
3935 /* signed long -> unsigned int */
3936 return INTEGER_CONVERSION_BADNESS;
3938 /* signed int/long -> unsigned int/long */
3939 return INTEGER_CONVERSION_BADNESS;
3942 else if (!TYPE_NOSIGN (arg) && !TYPE_UNSIGNED (arg))
3944 if (integer_types_same_name_p (TYPE_NAME (parm),
3946 return EXACT_MATCH_BADNESS;
3947 else if (integer_types_same_name_p (TYPE_NAME (arg),
3949 && integer_types_same_name_p (TYPE_NAME (parm),
3951 return INTEGER_PROMOTION_BADNESS;
3953 return INTEGER_CONVERSION_BADNESS;
3956 return INTEGER_CONVERSION_BADNESS;
3958 else if (TYPE_LENGTH (arg) < TYPE_LENGTH (parm))
3959 return INTEGER_PROMOTION_BADNESS;
3961 return INTEGER_CONVERSION_BADNESS;
3962 case TYPE_CODE_ENUM:
3963 case TYPE_CODE_FLAGS:
3964 case TYPE_CODE_CHAR:
3965 case TYPE_CODE_RANGE:
3966 case TYPE_CODE_BOOL:
3967 if (TYPE_DECLARED_CLASS (arg))
3968 return INCOMPATIBLE_TYPE_BADNESS;
3969 return INTEGER_PROMOTION_BADNESS;
3971 return INT_FLOAT_CONVERSION_BADNESS;
3973 return NS_POINTER_CONVERSION_BADNESS;
3975 return INCOMPATIBLE_TYPE_BADNESS;
3979 /* rank_one_type helper for when PARM's type code is TYPE_CODE_ENUM. */
3982 rank_one_type_parm_enum (struct type *parm, struct type *arg, struct value *value)
3984 switch (TYPE_CODE (arg))
3987 case TYPE_CODE_CHAR:
3988 case TYPE_CODE_RANGE:
3989 case TYPE_CODE_BOOL:
3990 case TYPE_CODE_ENUM:
3991 if (TYPE_DECLARED_CLASS (parm) || TYPE_DECLARED_CLASS (arg))
3992 return INCOMPATIBLE_TYPE_BADNESS;
3993 return INTEGER_CONVERSION_BADNESS;
3995 return INT_FLOAT_CONVERSION_BADNESS;
3997 return INCOMPATIBLE_TYPE_BADNESS;
4001 /* rank_one_type helper for when PARM's type code is TYPE_CODE_CHAR. */
4004 rank_one_type_parm_char (struct type *parm, struct type *arg, struct value *value)
4006 switch (TYPE_CODE (arg))
4008 case TYPE_CODE_RANGE:
4009 case TYPE_CODE_BOOL:
4010 case TYPE_CODE_ENUM:
4011 if (TYPE_DECLARED_CLASS (arg))
4012 return INCOMPATIBLE_TYPE_BADNESS;
4013 return INTEGER_CONVERSION_BADNESS;
4015 return INT_FLOAT_CONVERSION_BADNESS;
4017 if (TYPE_LENGTH (arg) > TYPE_LENGTH (parm))
4018 return INTEGER_CONVERSION_BADNESS;
4019 else if (TYPE_LENGTH (arg) < TYPE_LENGTH (parm))
4020 return INTEGER_PROMOTION_BADNESS;
4022 case TYPE_CODE_CHAR:
4023 /* Deal with signed, unsigned, and plain chars for C++ and
4024 with int cases falling through from previous case. */
4025 if (TYPE_NOSIGN (parm))
4027 if (TYPE_NOSIGN (arg))
4028 return EXACT_MATCH_BADNESS;
4030 return INTEGER_CONVERSION_BADNESS;
4032 else if (TYPE_UNSIGNED (parm))
4034 if (TYPE_UNSIGNED (arg))
4035 return EXACT_MATCH_BADNESS;
4037 return INTEGER_PROMOTION_BADNESS;
4039 else if (!TYPE_NOSIGN (arg) && !TYPE_UNSIGNED (arg))
4040 return EXACT_MATCH_BADNESS;
4042 return INTEGER_CONVERSION_BADNESS;
4044 return INCOMPATIBLE_TYPE_BADNESS;
4048 /* rank_one_type helper for when PARM's type code is TYPE_CODE_RANGE. */
4051 rank_one_type_parm_range (struct type *parm, struct type *arg, struct value *value)
4053 switch (TYPE_CODE (arg))
4056 case TYPE_CODE_CHAR:
4057 case TYPE_CODE_RANGE:
4058 case TYPE_CODE_BOOL:
4059 case TYPE_CODE_ENUM:
4060 return INTEGER_CONVERSION_BADNESS;
4062 return INT_FLOAT_CONVERSION_BADNESS;
4064 return INCOMPATIBLE_TYPE_BADNESS;
4068 /* Compare one type (PARM) for compatibility with another (ARG).
4069 * PARM is intended to be the parameter type of a function; and
4070 * ARG is the supplied argument's type. This function tests if
4071 * the latter can be converted to the former.
4072 * VALUE is the argument's value or NULL if none (or called recursively)
4074 * Return 0 if they are identical types;
4075 * Otherwise, return an integer which corresponds to how compatible
4076 * PARM is to ARG. The higher the return value, the worse the match.
4077 * Generally the "bad" conversions are all uniformly assigned a 100. */
4080 rank_one_type (struct type *parm, struct type *arg, struct value *value)
4082 struct rank rank = {0,0};
4084 /* Resolve typedefs */
4085 if (TYPE_CODE (parm) == TYPE_CODE_TYPEDEF)
4086 parm = check_typedef (parm);
4087 if (TYPE_CODE (arg) == TYPE_CODE_TYPEDEF)
4088 arg = check_typedef (arg);
4090 if (TYPE_IS_REFERENCE (parm) && value != NULL)
4092 if (VALUE_LVAL (value) == not_lval)
4094 /* Rvalues should preferably bind to rvalue references or const
4095 lvalue references. */
4096 if (TYPE_CODE (parm) == TYPE_CODE_RVALUE_REF)
4097 rank.subrank = REFERENCE_CONVERSION_RVALUE;
4098 else if (TYPE_CONST (TYPE_TARGET_TYPE (parm)))
4099 rank.subrank = REFERENCE_CONVERSION_CONST_LVALUE;
4101 return INCOMPATIBLE_TYPE_BADNESS;
4102 return sum_ranks (rank, REFERENCE_CONVERSION_BADNESS);
4106 /* Lvalues should prefer lvalue overloads. */
4107 if (TYPE_CODE (parm) == TYPE_CODE_RVALUE_REF)
4109 rank.subrank = REFERENCE_CONVERSION_RVALUE;
4110 return sum_ranks (rank, REFERENCE_CONVERSION_BADNESS);
4115 if (types_equal (parm, arg))
4117 struct type *t1 = parm;
4118 struct type *t2 = arg;
4120 /* For pointers and references, compare target type. */
4121 if (TYPE_CODE (parm) == TYPE_CODE_PTR || TYPE_IS_REFERENCE (parm))
4123 t1 = TYPE_TARGET_TYPE (parm);
4124 t2 = TYPE_TARGET_TYPE (arg);
4127 /* Make sure they are CV equal, too. */
4128 if (TYPE_CONST (t1) != TYPE_CONST (t2))
4129 rank.subrank |= CV_CONVERSION_CONST;
4130 if (TYPE_VOLATILE (t1) != TYPE_VOLATILE (t2))
4131 rank.subrank |= CV_CONVERSION_VOLATILE;
4132 if (rank.subrank != 0)
4133 return sum_ranks (CV_CONVERSION_BADNESS, rank);
4134 return EXACT_MATCH_BADNESS;
4137 /* See through references, since we can almost make non-references
4140 if (TYPE_IS_REFERENCE (arg))
4141 return (sum_ranks (rank_one_type (parm, TYPE_TARGET_TYPE (arg), NULL),
4142 REFERENCE_CONVERSION_BADNESS));
4143 if (TYPE_IS_REFERENCE (parm))
4144 return (sum_ranks (rank_one_type (TYPE_TARGET_TYPE (parm), arg, NULL),
4145 REFERENCE_CONVERSION_BADNESS));
4147 /* Debugging only. */
4148 fprintf_filtered (gdb_stderr,
4149 "------ Arg is %s [%d], parm is %s [%d]\n",
4150 TYPE_NAME (arg), TYPE_CODE (arg),
4151 TYPE_NAME (parm), TYPE_CODE (parm));
4153 /* x -> y means arg of type x being supplied for parameter of type y. */
4155 switch (TYPE_CODE (parm))
4158 return rank_one_type_parm_ptr (parm, arg, value);
4159 case TYPE_CODE_ARRAY:
4160 return rank_one_type_parm_array (parm, arg, value);
4161 case TYPE_CODE_FUNC:
4162 return rank_one_type_parm_func (parm, arg, value);
4164 return rank_one_type_parm_int (parm, arg, value);
4165 case TYPE_CODE_ENUM:
4166 return rank_one_type_parm_enum (parm, arg, value);
4167 case TYPE_CODE_CHAR:
4168 return rank_one_type_parm_char (parm, arg, value);
4169 case TYPE_CODE_RANGE:
4170 return rank_one_type_parm_range (parm, arg, value);
4171 case TYPE_CODE_BOOL:
4172 switch (TYPE_CODE (arg))
4174 /* n3290 draft, section 4.12.1 (conv.bool):
4176 "A prvalue of arithmetic, unscoped enumeration, pointer, or
4177 pointer to member type can be converted to a prvalue of type
4178 bool. A zero value, null pointer value, or null member pointer
4179 value is converted to false; any other value is converted to
4180 true. A prvalue of type std::nullptr_t can be converted to a
4181 prvalue of type bool; the resulting value is false." */
4183 case TYPE_CODE_CHAR:
4184 case TYPE_CODE_ENUM:
4186 case TYPE_CODE_MEMBERPTR:
4188 return BOOL_CONVERSION_BADNESS;
4189 case TYPE_CODE_RANGE:
4190 return INCOMPATIBLE_TYPE_BADNESS;
4191 case TYPE_CODE_BOOL:
4192 return EXACT_MATCH_BADNESS;
4194 return INCOMPATIBLE_TYPE_BADNESS;
4198 switch (TYPE_CODE (arg))
4201 if (TYPE_LENGTH (arg) < TYPE_LENGTH (parm))
4202 return FLOAT_PROMOTION_BADNESS;
4203 else if (TYPE_LENGTH (arg) == TYPE_LENGTH (parm))
4204 return EXACT_MATCH_BADNESS;
4206 return FLOAT_CONVERSION_BADNESS;
4208 case TYPE_CODE_BOOL:
4209 case TYPE_CODE_ENUM:
4210 case TYPE_CODE_RANGE:
4211 case TYPE_CODE_CHAR:
4212 return INT_FLOAT_CONVERSION_BADNESS;
4214 return INCOMPATIBLE_TYPE_BADNESS;
4217 case TYPE_CODE_COMPLEX:
4218 switch (TYPE_CODE (arg))
4219 { /* Strictly not needed for C++, but... */
4221 return FLOAT_PROMOTION_BADNESS;
4222 case TYPE_CODE_COMPLEX:
4223 return EXACT_MATCH_BADNESS;
4225 return INCOMPATIBLE_TYPE_BADNESS;
4228 case TYPE_CODE_STRUCT:
4229 switch (TYPE_CODE (arg))
4231 case TYPE_CODE_STRUCT:
4232 /* Check for derivation */
4233 rank.subrank = distance_to_ancestor (parm, arg, 0);
4234 if (rank.subrank >= 0)
4235 return sum_ranks (BASE_CONVERSION_BADNESS, rank);
4238 return INCOMPATIBLE_TYPE_BADNESS;
4241 case TYPE_CODE_UNION:
4242 switch (TYPE_CODE (arg))
4244 case TYPE_CODE_UNION:
4246 return INCOMPATIBLE_TYPE_BADNESS;
4249 case TYPE_CODE_MEMBERPTR:
4250 switch (TYPE_CODE (arg))
4253 return INCOMPATIBLE_TYPE_BADNESS;
4256 case TYPE_CODE_METHOD:
4257 switch (TYPE_CODE (arg))
4261 return INCOMPATIBLE_TYPE_BADNESS;
4265 switch (TYPE_CODE (arg))
4269 return INCOMPATIBLE_TYPE_BADNESS;
4274 switch (TYPE_CODE (arg))
4278 return rank_one_type (TYPE_FIELD_TYPE (parm, 0),
4279 TYPE_FIELD_TYPE (arg, 0), NULL);
4281 return INCOMPATIBLE_TYPE_BADNESS;
4284 case TYPE_CODE_VOID:
4286 return INCOMPATIBLE_TYPE_BADNESS;
4287 } /* switch (TYPE_CODE (arg)) */
4290 /* End of functions for overload resolution. */
4292 /* Routines to pretty-print types. */
4295 print_bit_vector (B_TYPE *bits, int nbits)
4299 for (bitno = 0; bitno < nbits; bitno++)
4301 if ((bitno % 8) == 0)
4303 puts_filtered (" ");
4305 if (B_TST (bits, bitno))
4306 printf_filtered (("1"));
4308 printf_filtered (("0"));
4312 /* Note the first arg should be the "this" pointer, we may not want to
4313 include it since we may get into a infinitely recursive
4317 print_args (struct field *args, int nargs, int spaces)
4323 for (i = 0; i < nargs; i++)
4325 printfi_filtered (spaces, "[%d] name '%s'\n", i,
4326 args[i].name != NULL ? args[i].name : "<NULL>");
4327 recursive_dump_type (args[i].type, spaces + 2);
4333 field_is_static (struct field *f)
4335 /* "static" fields are the fields whose location is not relative
4336 to the address of the enclosing struct. It would be nice to
4337 have a dedicated flag that would be set for static fields when
4338 the type is being created. But in practice, checking the field
4339 loc_kind should give us an accurate answer. */
4340 return (FIELD_LOC_KIND (*f) == FIELD_LOC_KIND_PHYSNAME
4341 || FIELD_LOC_KIND (*f) == FIELD_LOC_KIND_PHYSADDR);
4345 dump_fn_fieldlists (struct type *type, int spaces)
4351 printfi_filtered (spaces, "fn_fieldlists ");
4352 gdb_print_host_address (TYPE_FN_FIELDLISTS (type), gdb_stdout);
4353 printf_filtered ("\n");
4354 for (method_idx = 0; method_idx < TYPE_NFN_FIELDS (type); method_idx++)
4356 f = TYPE_FN_FIELDLIST1 (type, method_idx);
4357 printfi_filtered (spaces + 2, "[%d] name '%s' (",
4359 TYPE_FN_FIELDLIST_NAME (type, method_idx));
4360 gdb_print_host_address (TYPE_FN_FIELDLIST_NAME (type, method_idx),
4362 printf_filtered (_(") length %d\n"),
4363 TYPE_FN_FIELDLIST_LENGTH (type, method_idx));
4364 for (overload_idx = 0;
4365 overload_idx < TYPE_FN_FIELDLIST_LENGTH (type, method_idx);
4368 printfi_filtered (spaces + 4, "[%d] physname '%s' (",
4370 TYPE_FN_FIELD_PHYSNAME (f, overload_idx));
4371 gdb_print_host_address (TYPE_FN_FIELD_PHYSNAME (f, overload_idx),
4373 printf_filtered (")\n");
4374 printfi_filtered (spaces + 8, "type ");
4375 gdb_print_host_address (TYPE_FN_FIELD_TYPE (f, overload_idx),
4377 printf_filtered ("\n");
4379 recursive_dump_type (TYPE_FN_FIELD_TYPE (f, overload_idx),
4382 printfi_filtered (spaces + 8, "args ");
4383 gdb_print_host_address (TYPE_FN_FIELD_ARGS (f, overload_idx),
4385 printf_filtered ("\n");
4386 print_args (TYPE_FN_FIELD_ARGS (f, overload_idx),
4387 TYPE_NFIELDS (TYPE_FN_FIELD_TYPE (f, overload_idx)),
4389 printfi_filtered (spaces + 8, "fcontext ");
4390 gdb_print_host_address (TYPE_FN_FIELD_FCONTEXT (f, overload_idx),
4392 printf_filtered ("\n");
4394 printfi_filtered (spaces + 8, "is_const %d\n",
4395 TYPE_FN_FIELD_CONST (f, overload_idx));
4396 printfi_filtered (spaces + 8, "is_volatile %d\n",
4397 TYPE_FN_FIELD_VOLATILE (f, overload_idx));
4398 printfi_filtered (spaces + 8, "is_private %d\n",
4399 TYPE_FN_FIELD_PRIVATE (f, overload_idx));
4400 printfi_filtered (spaces + 8, "is_protected %d\n",
4401 TYPE_FN_FIELD_PROTECTED (f, overload_idx));
4402 printfi_filtered (spaces + 8, "is_stub %d\n",
4403 TYPE_FN_FIELD_STUB (f, overload_idx));
4404 printfi_filtered (spaces + 8, "voffset %u\n",
4405 TYPE_FN_FIELD_VOFFSET (f, overload_idx));
4411 print_cplus_stuff (struct type *type, int spaces)
4413 printfi_filtered (spaces, "vptr_fieldno %d\n", TYPE_VPTR_FIELDNO (type));
4414 printfi_filtered (spaces, "vptr_basetype ");
4415 gdb_print_host_address (TYPE_VPTR_BASETYPE (type), gdb_stdout);
4416 puts_filtered ("\n");
4417 if (TYPE_VPTR_BASETYPE (type) != NULL)
4418 recursive_dump_type (TYPE_VPTR_BASETYPE (type), spaces + 2);
4420 printfi_filtered (spaces, "n_baseclasses %d\n",
4421 TYPE_N_BASECLASSES (type));
4422 printfi_filtered (spaces, "nfn_fields %d\n",
4423 TYPE_NFN_FIELDS (type));
4424 if (TYPE_N_BASECLASSES (type) > 0)
4426 printfi_filtered (spaces, "virtual_field_bits (%d bits at *",
4427 TYPE_N_BASECLASSES (type));
4428 gdb_print_host_address (TYPE_FIELD_VIRTUAL_BITS (type),
4430 printf_filtered (")");
4432 print_bit_vector (TYPE_FIELD_VIRTUAL_BITS (type),
4433 TYPE_N_BASECLASSES (type));
4434 puts_filtered ("\n");
4436 if (TYPE_NFIELDS (type) > 0)
4438 if (TYPE_FIELD_PRIVATE_BITS (type) != NULL)
4440 printfi_filtered (spaces,
4441 "private_field_bits (%d bits at *",
4442 TYPE_NFIELDS (type));
4443 gdb_print_host_address (TYPE_FIELD_PRIVATE_BITS (type),
4445 printf_filtered (")");
4446 print_bit_vector (TYPE_FIELD_PRIVATE_BITS (type),
4447 TYPE_NFIELDS (type));
4448 puts_filtered ("\n");
4450 if (TYPE_FIELD_PROTECTED_BITS (type) != NULL)
4452 printfi_filtered (spaces,
4453 "protected_field_bits (%d bits at *",
4454 TYPE_NFIELDS (type));
4455 gdb_print_host_address (TYPE_FIELD_PROTECTED_BITS (type),
4457 printf_filtered (")");
4458 print_bit_vector (TYPE_FIELD_PROTECTED_BITS (type),
4459 TYPE_NFIELDS (type));
4460 puts_filtered ("\n");
4463 if (TYPE_NFN_FIELDS (type) > 0)
4465 dump_fn_fieldlists (type, spaces);
4469 /* Print the contents of the TYPE's type_specific union, assuming that
4470 its type-specific kind is TYPE_SPECIFIC_GNAT_STUFF. */
4473 print_gnat_stuff (struct type *type, int spaces)
4475 struct type *descriptive_type = TYPE_DESCRIPTIVE_TYPE (type);
4477 if (descriptive_type == NULL)
4478 printfi_filtered (spaces + 2, "no descriptive type\n");
4481 printfi_filtered (spaces + 2, "descriptive type\n");
4482 recursive_dump_type (descriptive_type, spaces + 4);
4486 static struct obstack dont_print_type_obstack;
4489 recursive_dump_type (struct type *type, int spaces)
4494 obstack_begin (&dont_print_type_obstack, 0);
4496 if (TYPE_NFIELDS (type) > 0
4497 || (HAVE_CPLUS_STRUCT (type) && TYPE_NFN_FIELDS (type) > 0))
4499 struct type **first_dont_print
4500 = (struct type **) obstack_base (&dont_print_type_obstack);
4502 int i = (struct type **)
4503 obstack_next_free (&dont_print_type_obstack) - first_dont_print;
4507 if (type == first_dont_print[i])
4509 printfi_filtered (spaces, "type node ");
4510 gdb_print_host_address (type, gdb_stdout);
4511 printf_filtered (_(" <same as already seen type>\n"));
4516 obstack_ptr_grow (&dont_print_type_obstack, type);
4519 printfi_filtered (spaces, "type node ");
4520 gdb_print_host_address (type, gdb_stdout);
4521 printf_filtered ("\n");
4522 printfi_filtered (spaces, "name '%s' (",
4523 TYPE_NAME (type) ? TYPE_NAME (type) : "<NULL>");
4524 gdb_print_host_address (TYPE_NAME (type), gdb_stdout);
4525 printf_filtered (")\n");
4526 printfi_filtered (spaces, "code 0x%x ", TYPE_CODE (type));
4527 switch (TYPE_CODE (type))
4529 case TYPE_CODE_UNDEF:
4530 printf_filtered ("(TYPE_CODE_UNDEF)");
4533 printf_filtered ("(TYPE_CODE_PTR)");
4535 case TYPE_CODE_ARRAY:
4536 printf_filtered ("(TYPE_CODE_ARRAY)");
4538 case TYPE_CODE_STRUCT:
4539 printf_filtered ("(TYPE_CODE_STRUCT)");
4541 case TYPE_CODE_UNION:
4542 printf_filtered ("(TYPE_CODE_UNION)");
4544 case TYPE_CODE_ENUM:
4545 printf_filtered ("(TYPE_CODE_ENUM)");
4547 case TYPE_CODE_FLAGS:
4548 printf_filtered ("(TYPE_CODE_FLAGS)");
4550 case TYPE_CODE_FUNC:
4551 printf_filtered ("(TYPE_CODE_FUNC)");
4554 printf_filtered ("(TYPE_CODE_INT)");
4557 printf_filtered ("(TYPE_CODE_FLT)");
4559 case TYPE_CODE_VOID:
4560 printf_filtered ("(TYPE_CODE_VOID)");
4563 printf_filtered ("(TYPE_CODE_SET)");
4565 case TYPE_CODE_RANGE:
4566 printf_filtered ("(TYPE_CODE_RANGE)");
4568 case TYPE_CODE_STRING:
4569 printf_filtered ("(TYPE_CODE_STRING)");
4571 case TYPE_CODE_ERROR:
4572 printf_filtered ("(TYPE_CODE_ERROR)");
4574 case TYPE_CODE_MEMBERPTR:
4575 printf_filtered ("(TYPE_CODE_MEMBERPTR)");
4577 case TYPE_CODE_METHODPTR:
4578 printf_filtered ("(TYPE_CODE_METHODPTR)");
4580 case TYPE_CODE_METHOD:
4581 printf_filtered ("(TYPE_CODE_METHOD)");
4584 printf_filtered ("(TYPE_CODE_REF)");
4586 case TYPE_CODE_CHAR:
4587 printf_filtered ("(TYPE_CODE_CHAR)");
4589 case TYPE_CODE_BOOL:
4590 printf_filtered ("(TYPE_CODE_BOOL)");
4592 case TYPE_CODE_COMPLEX:
4593 printf_filtered ("(TYPE_CODE_COMPLEX)");
4595 case TYPE_CODE_TYPEDEF:
4596 printf_filtered ("(TYPE_CODE_TYPEDEF)");
4598 case TYPE_CODE_NAMESPACE:
4599 printf_filtered ("(TYPE_CODE_NAMESPACE)");
4602 printf_filtered ("(UNKNOWN TYPE CODE)");
4605 puts_filtered ("\n");
4606 printfi_filtered (spaces, "length %d\n", TYPE_LENGTH (type));
4607 if (TYPE_OBJFILE_OWNED (type))
4609 printfi_filtered (spaces, "objfile ");
4610 gdb_print_host_address (TYPE_OWNER (type).objfile, gdb_stdout);
4614 printfi_filtered (spaces, "gdbarch ");
4615 gdb_print_host_address (TYPE_OWNER (type).gdbarch, gdb_stdout);
4617 printf_filtered ("\n");
4618 printfi_filtered (spaces, "target_type ");
4619 gdb_print_host_address (TYPE_TARGET_TYPE (type), gdb_stdout);
4620 printf_filtered ("\n");
4621 if (TYPE_TARGET_TYPE (type) != NULL)
4623 recursive_dump_type (TYPE_TARGET_TYPE (type), spaces + 2);
4625 printfi_filtered (spaces, "pointer_type ");
4626 gdb_print_host_address (TYPE_POINTER_TYPE (type), gdb_stdout);
4627 printf_filtered ("\n");
4628 printfi_filtered (spaces, "reference_type ");
4629 gdb_print_host_address (TYPE_REFERENCE_TYPE (type), gdb_stdout);
4630 printf_filtered ("\n");
4631 printfi_filtered (spaces, "type_chain ");
4632 gdb_print_host_address (TYPE_CHAIN (type), gdb_stdout);
4633 printf_filtered ("\n");
4634 printfi_filtered (spaces, "instance_flags 0x%x",
4635 TYPE_INSTANCE_FLAGS (type));
4636 if (TYPE_CONST (type))
4638 puts_filtered (" TYPE_CONST");
4640 if (TYPE_VOLATILE (type))
4642 puts_filtered (" TYPE_VOLATILE");
4644 if (TYPE_CODE_SPACE (type))
4646 puts_filtered (" TYPE_CODE_SPACE");
4648 if (TYPE_DATA_SPACE (type))
4650 puts_filtered (" TYPE_DATA_SPACE");
4652 if (TYPE_ADDRESS_CLASS_1 (type))
4654 puts_filtered (" TYPE_ADDRESS_CLASS_1");
4656 if (TYPE_ADDRESS_CLASS_2 (type))
4658 puts_filtered (" TYPE_ADDRESS_CLASS_2");
4660 if (TYPE_RESTRICT (type))
4662 puts_filtered (" TYPE_RESTRICT");
4664 if (TYPE_ATOMIC (type))
4666 puts_filtered (" TYPE_ATOMIC");
4668 puts_filtered ("\n");
4670 printfi_filtered (spaces, "flags");
4671 if (TYPE_UNSIGNED (type))
4673 puts_filtered (" TYPE_UNSIGNED");
4675 if (TYPE_NOSIGN (type))
4677 puts_filtered (" TYPE_NOSIGN");
4679 if (TYPE_STUB (type))
4681 puts_filtered (" TYPE_STUB");
4683 if (TYPE_TARGET_STUB (type))
4685 puts_filtered (" TYPE_TARGET_STUB");
4687 if (TYPE_PROTOTYPED (type))
4689 puts_filtered (" TYPE_PROTOTYPED");
4691 if (TYPE_INCOMPLETE (type))
4693 puts_filtered (" TYPE_INCOMPLETE");
4695 if (TYPE_VARARGS (type))
4697 puts_filtered (" TYPE_VARARGS");
4699 /* This is used for things like AltiVec registers on ppc. Gcc emits
4700 an attribute for the array type, which tells whether or not we
4701 have a vector, instead of a regular array. */
4702 if (TYPE_VECTOR (type))
4704 puts_filtered (" TYPE_VECTOR");
4706 if (TYPE_FIXED_INSTANCE (type))
4708 puts_filtered (" TYPE_FIXED_INSTANCE");
4710 if (TYPE_STUB_SUPPORTED (type))
4712 puts_filtered (" TYPE_STUB_SUPPORTED");
4714 if (TYPE_NOTTEXT (type))
4716 puts_filtered (" TYPE_NOTTEXT");
4718 puts_filtered ("\n");
4719 printfi_filtered (spaces, "nfields %d ", TYPE_NFIELDS (type));
4720 gdb_print_host_address (TYPE_FIELDS (type), gdb_stdout);
4721 puts_filtered ("\n");
4722 for (idx = 0; idx < TYPE_NFIELDS (type); idx++)
4724 if (TYPE_CODE (type) == TYPE_CODE_ENUM)
4725 printfi_filtered (spaces + 2,
4726 "[%d] enumval %s type ",
4727 idx, plongest (TYPE_FIELD_ENUMVAL (type, idx)));
4729 printfi_filtered (spaces + 2,
4730 "[%d] bitpos %s bitsize %d type ",
4731 idx, plongest (TYPE_FIELD_BITPOS (type, idx)),
4732 TYPE_FIELD_BITSIZE (type, idx));
4733 gdb_print_host_address (TYPE_FIELD_TYPE (type, idx), gdb_stdout);
4734 printf_filtered (" name '%s' (",
4735 TYPE_FIELD_NAME (type, idx) != NULL
4736 ? TYPE_FIELD_NAME (type, idx)
4738 gdb_print_host_address (TYPE_FIELD_NAME (type, idx), gdb_stdout);
4739 printf_filtered (")\n");
4740 if (TYPE_FIELD_TYPE (type, idx) != NULL)
4742 recursive_dump_type (TYPE_FIELD_TYPE (type, idx), spaces + 4);
4745 if (TYPE_CODE (type) == TYPE_CODE_RANGE)
4747 printfi_filtered (spaces, "low %s%s high %s%s\n",
4748 plongest (TYPE_LOW_BOUND (type)),
4749 TYPE_LOW_BOUND_UNDEFINED (type) ? " (undefined)" : "",
4750 plongest (TYPE_HIGH_BOUND (type)),
4751 TYPE_HIGH_BOUND_UNDEFINED (type)
4752 ? " (undefined)" : "");
4755 switch (TYPE_SPECIFIC_FIELD (type))
4757 case TYPE_SPECIFIC_CPLUS_STUFF:
4758 printfi_filtered (spaces, "cplus_stuff ");
4759 gdb_print_host_address (TYPE_CPLUS_SPECIFIC (type),
4761 puts_filtered ("\n");
4762 print_cplus_stuff (type, spaces);
4765 case TYPE_SPECIFIC_GNAT_STUFF:
4766 printfi_filtered (spaces, "gnat_stuff ");
4767 gdb_print_host_address (TYPE_GNAT_SPECIFIC (type), gdb_stdout);
4768 puts_filtered ("\n");
4769 print_gnat_stuff (type, spaces);
4772 case TYPE_SPECIFIC_FLOATFORMAT:
4773 printfi_filtered (spaces, "floatformat ");
4774 if (TYPE_FLOATFORMAT (type) == NULL
4775 || TYPE_FLOATFORMAT (type)->name == NULL)
4776 puts_filtered ("(null)");
4778 puts_filtered (TYPE_FLOATFORMAT (type)->name);
4779 puts_filtered ("\n");
4782 case TYPE_SPECIFIC_FUNC:
4783 printfi_filtered (spaces, "calling_convention %d\n",
4784 TYPE_CALLING_CONVENTION (type));
4785 /* tail_call_list is not printed. */
4788 case TYPE_SPECIFIC_SELF_TYPE:
4789 printfi_filtered (spaces, "self_type ");
4790 gdb_print_host_address (TYPE_SELF_TYPE (type), gdb_stdout);
4791 puts_filtered ("\n");
4796 obstack_free (&dont_print_type_obstack, NULL);
4799 /* Trivial helpers for the libiberty hash table, for mapping one
4802 struct type_pair : public allocate_on_obstack
4804 type_pair (struct type *old_, struct type *newobj_)
4805 : old (old_), newobj (newobj_)
4808 struct type * const old, * const newobj;
4812 type_pair_hash (const void *item)
4814 const struct type_pair *pair = (const struct type_pair *) item;
4816 return htab_hash_pointer (pair->old);
4820 type_pair_eq (const void *item_lhs, const void *item_rhs)
4822 const struct type_pair *lhs = (const struct type_pair *) item_lhs;
4823 const struct type_pair *rhs = (const struct type_pair *) item_rhs;
4825 return lhs->old == rhs->old;
4828 /* Allocate the hash table used by copy_type_recursive to walk
4829 types without duplicates. We use OBJFILE's obstack, because
4830 OBJFILE is about to be deleted. */
4833 create_copied_types_hash (struct objfile *objfile)
4835 return htab_create_alloc_ex (1, type_pair_hash, type_pair_eq,
4836 NULL, &objfile->objfile_obstack,
4837 hashtab_obstack_allocate,
4838 dummy_obstack_deallocate);
4841 /* Recursively copy (deep copy) a dynamic attribute list of a type. */
4843 static struct dynamic_prop_list *
4844 copy_dynamic_prop_list (struct obstack *objfile_obstack,
4845 struct dynamic_prop_list *list)
4847 struct dynamic_prop_list *copy = list;
4848 struct dynamic_prop_list **node_ptr = ©
4850 while (*node_ptr != NULL)
4852 struct dynamic_prop_list *node_copy;
4854 node_copy = ((struct dynamic_prop_list *)
4855 obstack_copy (objfile_obstack, *node_ptr,
4856 sizeof (struct dynamic_prop_list)));
4857 node_copy->prop = (*node_ptr)->prop;
4858 *node_ptr = node_copy;
4860 node_ptr = &node_copy->next;
4866 /* Recursively copy (deep copy) TYPE, if it is associated with
4867 OBJFILE. Return a new type owned by the gdbarch associated with the type, a
4868 saved type if we have already visited TYPE (using COPIED_TYPES), or TYPE if
4869 it is not associated with OBJFILE. */
4872 copy_type_recursive (struct objfile *objfile,
4874 htab_t copied_types)
4877 struct type *new_type;
4879 if (! TYPE_OBJFILE_OWNED (type))
4882 /* This type shouldn't be pointing to any types in other objfiles;
4883 if it did, the type might disappear unexpectedly. */
4884 gdb_assert (TYPE_OBJFILE (type) == objfile);
4886 struct type_pair pair (type, nullptr);
4888 slot = htab_find_slot (copied_types, &pair, INSERT);
4890 return ((struct type_pair *) *slot)->newobj;
4892 new_type = alloc_type_arch (get_type_arch (type));
4894 /* We must add the new type to the hash table immediately, in case
4895 we encounter this type again during a recursive call below. */
4896 struct type_pair *stored
4897 = new (&objfile->objfile_obstack) struct type_pair (type, new_type);
4901 /* Copy the common fields of types. For the main type, we simply
4902 copy the entire thing and then update specific fields as needed. */
4903 *TYPE_MAIN_TYPE (new_type) = *TYPE_MAIN_TYPE (type);
4904 TYPE_OBJFILE_OWNED (new_type) = 0;
4905 TYPE_OWNER (new_type).gdbarch = get_type_arch (type);
4907 if (TYPE_NAME (type))
4908 TYPE_NAME (new_type) = xstrdup (TYPE_NAME (type));
4910 TYPE_INSTANCE_FLAGS (new_type) = TYPE_INSTANCE_FLAGS (type);
4911 TYPE_LENGTH (new_type) = TYPE_LENGTH (type);
4913 /* Copy the fields. */
4914 if (TYPE_NFIELDS (type))
4918 nfields = TYPE_NFIELDS (type);
4919 TYPE_FIELDS (new_type) = (struct field *)
4920 TYPE_ZALLOC (new_type, nfields * sizeof (struct field));
4921 for (i = 0; i < nfields; i++)
4923 TYPE_FIELD_ARTIFICIAL (new_type, i) =
4924 TYPE_FIELD_ARTIFICIAL (type, i);
4925 TYPE_FIELD_BITSIZE (new_type, i) = TYPE_FIELD_BITSIZE (type, i);
4926 if (TYPE_FIELD_TYPE (type, i))
4927 TYPE_FIELD_TYPE (new_type, i)
4928 = copy_type_recursive (objfile, TYPE_FIELD_TYPE (type, i),
4930 if (TYPE_FIELD_NAME (type, i))
4931 TYPE_FIELD_NAME (new_type, i) =
4932 xstrdup (TYPE_FIELD_NAME (type, i));
4933 switch (TYPE_FIELD_LOC_KIND (type, i))
4935 case FIELD_LOC_KIND_BITPOS:
4936 SET_FIELD_BITPOS (TYPE_FIELD (new_type, i),
4937 TYPE_FIELD_BITPOS (type, i));
4939 case FIELD_LOC_KIND_ENUMVAL:
4940 SET_FIELD_ENUMVAL (TYPE_FIELD (new_type, i),
4941 TYPE_FIELD_ENUMVAL (type, i));
4943 case FIELD_LOC_KIND_PHYSADDR:
4944 SET_FIELD_PHYSADDR (TYPE_FIELD (new_type, i),
4945 TYPE_FIELD_STATIC_PHYSADDR (type, i));
4947 case FIELD_LOC_KIND_PHYSNAME:
4948 SET_FIELD_PHYSNAME (TYPE_FIELD (new_type, i),
4949 xstrdup (TYPE_FIELD_STATIC_PHYSNAME (type,
4953 internal_error (__FILE__, __LINE__,
4954 _("Unexpected type field location kind: %d"),
4955 TYPE_FIELD_LOC_KIND (type, i));
4960 /* For range types, copy the bounds information. */
4961 if (TYPE_CODE (type) == TYPE_CODE_RANGE)
4963 TYPE_RANGE_DATA (new_type) = (struct range_bounds *)
4964 TYPE_ALLOC (new_type, sizeof (struct range_bounds));
4965 *TYPE_RANGE_DATA (new_type) = *TYPE_RANGE_DATA (type);
4968 if (TYPE_DYN_PROP_LIST (type) != NULL)
4969 TYPE_DYN_PROP_LIST (new_type)
4970 = copy_dynamic_prop_list (&objfile->objfile_obstack,
4971 TYPE_DYN_PROP_LIST (type));
4974 /* Copy pointers to other types. */
4975 if (TYPE_TARGET_TYPE (type))
4976 TYPE_TARGET_TYPE (new_type) =
4977 copy_type_recursive (objfile,
4978 TYPE_TARGET_TYPE (type),
4981 /* Maybe copy the type_specific bits.
4983 NOTE drow/2005-12-09: We do not copy the C++-specific bits like
4984 base classes and methods. There's no fundamental reason why we
4985 can't, but at the moment it is not needed. */
4987 switch (TYPE_SPECIFIC_FIELD (type))
4989 case TYPE_SPECIFIC_NONE:
4991 case TYPE_SPECIFIC_FUNC:
4992 INIT_FUNC_SPECIFIC (new_type);
4993 TYPE_CALLING_CONVENTION (new_type) = TYPE_CALLING_CONVENTION (type);
4994 TYPE_NO_RETURN (new_type) = TYPE_NO_RETURN (type);
4995 TYPE_TAIL_CALL_LIST (new_type) = NULL;
4997 case TYPE_SPECIFIC_FLOATFORMAT:
4998 TYPE_FLOATFORMAT (new_type) = TYPE_FLOATFORMAT (type);
5000 case TYPE_SPECIFIC_CPLUS_STUFF:
5001 INIT_CPLUS_SPECIFIC (new_type);
5003 case TYPE_SPECIFIC_GNAT_STUFF:
5004 INIT_GNAT_SPECIFIC (new_type);
5006 case TYPE_SPECIFIC_SELF_TYPE:
5007 set_type_self_type (new_type,
5008 copy_type_recursive (objfile, TYPE_SELF_TYPE (type),
5012 gdb_assert_not_reached ("bad type_specific_kind");
5018 /* Make a copy of the given TYPE, except that the pointer & reference
5019 types are not preserved.
5021 This function assumes that the given type has an associated objfile.
5022 This objfile is used to allocate the new type. */
5025 copy_type (const struct type *type)
5027 struct type *new_type;
5029 gdb_assert (TYPE_OBJFILE_OWNED (type));
5031 new_type = alloc_type_copy (type);
5032 TYPE_INSTANCE_FLAGS (new_type) = TYPE_INSTANCE_FLAGS (type);
5033 TYPE_LENGTH (new_type) = TYPE_LENGTH (type);
5034 memcpy (TYPE_MAIN_TYPE (new_type), TYPE_MAIN_TYPE (type),
5035 sizeof (struct main_type));
5036 if (TYPE_DYN_PROP_LIST (type) != NULL)
5037 TYPE_DYN_PROP_LIST (new_type)
5038 = copy_dynamic_prop_list (&TYPE_OBJFILE (type) -> objfile_obstack,
5039 TYPE_DYN_PROP_LIST (type));
5044 /* Helper functions to initialize architecture-specific types. */
5046 /* Allocate a type structure associated with GDBARCH and set its
5047 CODE, LENGTH, and NAME fields. */
5050 arch_type (struct gdbarch *gdbarch,
5051 enum type_code code, int bit, const char *name)
5055 type = alloc_type_arch (gdbarch);
5056 set_type_code (type, code);
5057 gdb_assert ((bit % TARGET_CHAR_BIT) == 0);
5058 TYPE_LENGTH (type) = bit / TARGET_CHAR_BIT;
5061 TYPE_NAME (type) = gdbarch_obstack_strdup (gdbarch, name);
5066 /* Allocate a TYPE_CODE_INT type structure associated with GDBARCH.
5067 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
5068 the type's TYPE_UNSIGNED flag. NAME is the type name. */
5071 arch_integer_type (struct gdbarch *gdbarch,
5072 int bit, int unsigned_p, const char *name)
5076 t = arch_type (gdbarch, TYPE_CODE_INT, bit, name);
5078 TYPE_UNSIGNED (t) = 1;
5083 /* Allocate a TYPE_CODE_CHAR type structure associated with GDBARCH.
5084 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
5085 the type's TYPE_UNSIGNED flag. NAME is the type name. */
5088 arch_character_type (struct gdbarch *gdbarch,
5089 int bit, int unsigned_p, const char *name)
5093 t = arch_type (gdbarch, TYPE_CODE_CHAR, bit, name);
5095 TYPE_UNSIGNED (t) = 1;
5100 /* Allocate a TYPE_CODE_BOOL type structure associated with GDBARCH.
5101 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
5102 the type's TYPE_UNSIGNED flag. NAME is the type name. */
5105 arch_boolean_type (struct gdbarch *gdbarch,
5106 int bit, int unsigned_p, const char *name)
5110 t = arch_type (gdbarch, TYPE_CODE_BOOL, bit, name);
5112 TYPE_UNSIGNED (t) = 1;
5117 /* Allocate a TYPE_CODE_FLT type structure associated with GDBARCH.
5118 BIT is the type size in bits; if BIT equals -1, the size is
5119 determined by the floatformat. NAME is the type name. Set the
5120 TYPE_FLOATFORMAT from FLOATFORMATS. */
5123 arch_float_type (struct gdbarch *gdbarch,
5124 int bit, const char *name,
5125 const struct floatformat **floatformats)
5127 const struct floatformat *fmt = floatformats[gdbarch_byte_order (gdbarch)];
5130 bit = verify_floatformat (bit, fmt);
5131 t = arch_type (gdbarch, TYPE_CODE_FLT, bit, name);
5132 TYPE_FLOATFORMAT (t) = fmt;
5137 /* Allocate a TYPE_CODE_DECFLOAT type structure associated with GDBARCH.
5138 BIT is the type size in bits. NAME is the type name. */
5141 arch_decfloat_type (struct gdbarch *gdbarch, int bit, const char *name)
5145 t = arch_type (gdbarch, TYPE_CODE_DECFLOAT, bit, name);
5149 /* Allocate a TYPE_CODE_COMPLEX type structure associated with GDBARCH.
5150 NAME is the type name. TARGET_TYPE is the component float type. */
5153 arch_complex_type (struct gdbarch *gdbarch,
5154 const char *name, struct type *target_type)
5158 t = arch_type (gdbarch, TYPE_CODE_COMPLEX,
5159 2 * TYPE_LENGTH (target_type) * TARGET_CHAR_BIT, name);
5160 TYPE_TARGET_TYPE (t) = target_type;
5164 /* Allocate a TYPE_CODE_PTR type structure associated with GDBARCH.
5165 BIT is the pointer type size in bits. NAME is the type name.
5166 TARGET_TYPE is the pointer target type. Always sets the pointer type's
5167 TYPE_UNSIGNED flag. */
5170 arch_pointer_type (struct gdbarch *gdbarch,
5171 int bit, const char *name, struct type *target_type)
5175 t = arch_type (gdbarch, TYPE_CODE_PTR, bit, name);
5176 TYPE_TARGET_TYPE (t) = target_type;
5177 TYPE_UNSIGNED (t) = 1;
5181 /* Allocate a TYPE_CODE_FLAGS type structure associated with GDBARCH.
5182 NAME is the type name. BIT is the size of the flag word in bits. */
5185 arch_flags_type (struct gdbarch *gdbarch, const char *name, int bit)
5189 type = arch_type (gdbarch, TYPE_CODE_FLAGS, bit, name);
5190 TYPE_UNSIGNED (type) = 1;
5191 TYPE_NFIELDS (type) = 0;
5192 /* Pre-allocate enough space assuming every field is one bit. */
5194 = (struct field *) TYPE_ZALLOC (type, bit * sizeof (struct field));
5199 /* Add field to TYPE_CODE_FLAGS type TYPE to indicate the bit at
5200 position BITPOS is called NAME. Pass NAME as "" for fields that
5201 should not be printed. */
5204 append_flags_type_field (struct type *type, int start_bitpos, int nr_bits,
5205 struct type *field_type, const char *name)
5207 int type_bitsize = TYPE_LENGTH (type) * TARGET_CHAR_BIT;
5208 int field_nr = TYPE_NFIELDS (type);
5210 gdb_assert (TYPE_CODE (type) == TYPE_CODE_FLAGS);
5211 gdb_assert (TYPE_NFIELDS (type) + 1 <= type_bitsize);
5212 gdb_assert (start_bitpos >= 0 && start_bitpos < type_bitsize);
5213 gdb_assert (nr_bits >= 1 && nr_bits <= type_bitsize);
5214 gdb_assert (name != NULL);
5216 TYPE_FIELD_NAME (type, field_nr) = xstrdup (name);
5217 TYPE_FIELD_TYPE (type, field_nr) = field_type;
5218 SET_FIELD_BITPOS (TYPE_FIELD (type, field_nr), start_bitpos);
5219 TYPE_FIELD_BITSIZE (type, field_nr) = nr_bits;
5220 ++TYPE_NFIELDS (type);
5223 /* Special version of append_flags_type_field to add a flag field.
5224 Add field to TYPE_CODE_FLAGS type TYPE to indicate the bit at
5225 position BITPOS is called NAME. */
5228 append_flags_type_flag (struct type *type, int bitpos, const char *name)
5230 struct gdbarch *gdbarch = get_type_arch (type);
5232 append_flags_type_field (type, bitpos, 1,
5233 builtin_type (gdbarch)->builtin_bool,
5237 /* Allocate a TYPE_CODE_STRUCT or TYPE_CODE_UNION type structure (as
5238 specified by CODE) associated with GDBARCH. NAME is the type name. */
5241 arch_composite_type (struct gdbarch *gdbarch, const char *name,
5242 enum type_code code)
5246 gdb_assert (code == TYPE_CODE_STRUCT || code == TYPE_CODE_UNION);
5247 t = arch_type (gdbarch, code, 0, NULL);
5248 TYPE_NAME (t) = name;
5249 INIT_CPLUS_SPECIFIC (t);
5253 /* Add new field with name NAME and type FIELD to composite type T.
5254 Do not set the field's position or adjust the type's length;
5255 the caller should do so. Return the new field. */
5258 append_composite_type_field_raw (struct type *t, const char *name,
5263 TYPE_NFIELDS (t) = TYPE_NFIELDS (t) + 1;
5264 TYPE_FIELDS (t) = XRESIZEVEC (struct field, TYPE_FIELDS (t),
5266 f = &(TYPE_FIELDS (t)[TYPE_NFIELDS (t) - 1]);
5267 memset (f, 0, sizeof f[0]);
5268 FIELD_TYPE (f[0]) = field;
5269 FIELD_NAME (f[0]) = name;
5273 /* Add new field with name NAME and type FIELD to composite type T.
5274 ALIGNMENT (if non-zero) specifies the minimum field alignment. */
5277 append_composite_type_field_aligned (struct type *t, const char *name,
5278 struct type *field, int alignment)
5280 struct field *f = append_composite_type_field_raw (t, name, field);
5282 if (TYPE_CODE (t) == TYPE_CODE_UNION)
5284 if (TYPE_LENGTH (t) < TYPE_LENGTH (field))
5285 TYPE_LENGTH (t) = TYPE_LENGTH (field);
5287 else if (TYPE_CODE (t) == TYPE_CODE_STRUCT)
5289 TYPE_LENGTH (t) = TYPE_LENGTH (t) + TYPE_LENGTH (field);
5290 if (TYPE_NFIELDS (t) > 1)
5292 SET_FIELD_BITPOS (f[0],
5293 (FIELD_BITPOS (f[-1])
5294 + (TYPE_LENGTH (FIELD_TYPE (f[-1]))
5295 * TARGET_CHAR_BIT)));
5301 alignment *= TARGET_CHAR_BIT;
5302 left = FIELD_BITPOS (f[0]) % alignment;
5306 SET_FIELD_BITPOS (f[0], FIELD_BITPOS (f[0]) + (alignment - left));
5307 TYPE_LENGTH (t) += (alignment - left) / TARGET_CHAR_BIT;
5314 /* Add new field with name NAME and type FIELD to composite type T. */
5317 append_composite_type_field (struct type *t, const char *name,
5320 append_composite_type_field_aligned (t, name, field, 0);
5323 static struct gdbarch_data *gdbtypes_data;
5325 const struct builtin_type *
5326 builtin_type (struct gdbarch *gdbarch)
5328 return (const struct builtin_type *) gdbarch_data (gdbarch, gdbtypes_data);
5332 gdbtypes_post_init (struct gdbarch *gdbarch)
5334 struct builtin_type *builtin_type
5335 = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct builtin_type);
5338 builtin_type->builtin_void
5339 = arch_type (gdbarch, TYPE_CODE_VOID, TARGET_CHAR_BIT, "void");
5340 builtin_type->builtin_char
5341 = arch_integer_type (gdbarch, TARGET_CHAR_BIT,
5342 !gdbarch_char_signed (gdbarch), "char");
5343 TYPE_NOSIGN (builtin_type->builtin_char) = 1;
5344 builtin_type->builtin_signed_char
5345 = arch_integer_type (gdbarch, TARGET_CHAR_BIT,
5347 builtin_type->builtin_unsigned_char
5348 = arch_integer_type (gdbarch, TARGET_CHAR_BIT,
5349 1, "unsigned char");
5350 builtin_type->builtin_short
5351 = arch_integer_type (gdbarch, gdbarch_short_bit (gdbarch),
5353 builtin_type->builtin_unsigned_short
5354 = arch_integer_type (gdbarch, gdbarch_short_bit (gdbarch),
5355 1, "unsigned short");
5356 builtin_type->builtin_int
5357 = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch),
5359 builtin_type->builtin_unsigned_int
5360 = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch),
5362 builtin_type->builtin_long
5363 = arch_integer_type (gdbarch, gdbarch_long_bit (gdbarch),
5365 builtin_type->builtin_unsigned_long
5366 = arch_integer_type (gdbarch, gdbarch_long_bit (gdbarch),
5367 1, "unsigned long");
5368 builtin_type->builtin_long_long
5369 = arch_integer_type (gdbarch, gdbarch_long_long_bit (gdbarch),
5371 builtin_type->builtin_unsigned_long_long
5372 = arch_integer_type (gdbarch, gdbarch_long_long_bit (gdbarch),
5373 1, "unsigned long long");
5374 builtin_type->builtin_float
5375 = arch_float_type (gdbarch, gdbarch_float_bit (gdbarch),
5376 "float", gdbarch_float_format (gdbarch));
5377 builtin_type->builtin_double
5378 = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch),
5379 "double", gdbarch_double_format (gdbarch));
5380 builtin_type->builtin_long_double
5381 = arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch),
5382 "long double", gdbarch_long_double_format (gdbarch));
5383 builtin_type->builtin_complex
5384 = arch_complex_type (gdbarch, "complex",
5385 builtin_type->builtin_float);
5386 builtin_type->builtin_double_complex
5387 = arch_complex_type (gdbarch, "double complex",
5388 builtin_type->builtin_double);
5389 builtin_type->builtin_string
5390 = arch_type (gdbarch, TYPE_CODE_STRING, TARGET_CHAR_BIT, "string");
5391 builtin_type->builtin_bool
5392 = arch_type (gdbarch, TYPE_CODE_BOOL, TARGET_CHAR_BIT, "bool");
5394 /* The following three are about decimal floating point types, which
5395 are 32-bits, 64-bits and 128-bits respectively. */
5396 builtin_type->builtin_decfloat
5397 = arch_decfloat_type (gdbarch, 32, "_Decimal32");
5398 builtin_type->builtin_decdouble
5399 = arch_decfloat_type (gdbarch, 64, "_Decimal64");
5400 builtin_type->builtin_declong
5401 = arch_decfloat_type (gdbarch, 128, "_Decimal128");
5403 /* "True" character types. */
5404 builtin_type->builtin_true_char
5405 = arch_character_type (gdbarch, TARGET_CHAR_BIT, 0, "true character");
5406 builtin_type->builtin_true_unsigned_char
5407 = arch_character_type (gdbarch, TARGET_CHAR_BIT, 1, "true character");
5409 /* Fixed-size integer types. */
5410 builtin_type->builtin_int0
5411 = arch_integer_type (gdbarch, 0, 0, "int0_t");
5412 builtin_type->builtin_int8
5413 = arch_integer_type (gdbarch, 8, 0, "int8_t");
5414 builtin_type->builtin_uint8
5415 = arch_integer_type (gdbarch, 8, 1, "uint8_t");
5416 builtin_type->builtin_int16
5417 = arch_integer_type (gdbarch, 16, 0, "int16_t");
5418 builtin_type->builtin_uint16
5419 = arch_integer_type (gdbarch, 16, 1, "uint16_t");
5420 builtin_type->builtin_int24
5421 = arch_integer_type (gdbarch, 24, 0, "int24_t");
5422 builtin_type->builtin_uint24
5423 = arch_integer_type (gdbarch, 24, 1, "uint24_t");
5424 builtin_type->builtin_int32
5425 = arch_integer_type (gdbarch, 32, 0, "int32_t");
5426 builtin_type->builtin_uint32
5427 = arch_integer_type (gdbarch, 32, 1, "uint32_t");
5428 builtin_type->builtin_int64
5429 = arch_integer_type (gdbarch, 64, 0, "int64_t");
5430 builtin_type->builtin_uint64
5431 = arch_integer_type (gdbarch, 64, 1, "uint64_t");
5432 builtin_type->builtin_int128
5433 = arch_integer_type (gdbarch, 128, 0, "int128_t");
5434 builtin_type->builtin_uint128
5435 = arch_integer_type (gdbarch, 128, 1, "uint128_t");
5436 TYPE_INSTANCE_FLAGS (builtin_type->builtin_int8) |=
5437 TYPE_INSTANCE_FLAG_NOTTEXT;
5438 TYPE_INSTANCE_FLAGS (builtin_type->builtin_uint8) |=
5439 TYPE_INSTANCE_FLAG_NOTTEXT;
5441 /* Wide character types. */
5442 builtin_type->builtin_char16
5443 = arch_integer_type (gdbarch, 16, 1, "char16_t");
5444 builtin_type->builtin_char32
5445 = arch_integer_type (gdbarch, 32, 1, "char32_t");
5446 builtin_type->builtin_wchar
5447 = arch_integer_type (gdbarch, gdbarch_wchar_bit (gdbarch),
5448 !gdbarch_wchar_signed (gdbarch), "wchar_t");
5450 /* Default data/code pointer types. */
5451 builtin_type->builtin_data_ptr
5452 = lookup_pointer_type (builtin_type->builtin_void);
5453 builtin_type->builtin_func_ptr
5454 = lookup_pointer_type (lookup_function_type (builtin_type->builtin_void));
5455 builtin_type->builtin_func_func
5456 = lookup_function_type (builtin_type->builtin_func_ptr);
5458 /* This type represents a GDB internal function. */
5459 builtin_type->internal_fn
5460 = arch_type (gdbarch, TYPE_CODE_INTERNAL_FUNCTION, 0,
5461 "<internal function>");
5463 /* This type represents an xmethod. */
5464 builtin_type->xmethod
5465 = arch_type (gdbarch, TYPE_CODE_XMETHOD, 0, "<xmethod>");
5467 return builtin_type;
5470 /* This set of objfile-based types is intended to be used by symbol
5471 readers as basic types. */
5473 static const struct objfile_data *objfile_type_data;
5475 const struct objfile_type *
5476 objfile_type (struct objfile *objfile)
5478 struct gdbarch *gdbarch;
5479 struct objfile_type *objfile_type
5480 = (struct objfile_type *) objfile_data (objfile, objfile_type_data);
5483 return objfile_type;
5485 objfile_type = OBSTACK_CALLOC (&objfile->objfile_obstack,
5486 1, struct objfile_type);
5488 /* Use the objfile architecture to determine basic type properties. */
5489 gdbarch = get_objfile_arch (objfile);
5492 objfile_type->builtin_void
5493 = init_type (objfile, TYPE_CODE_VOID, TARGET_CHAR_BIT, "void");
5494 objfile_type->builtin_char
5495 = init_integer_type (objfile, TARGET_CHAR_BIT,
5496 !gdbarch_char_signed (gdbarch), "char");
5497 TYPE_NOSIGN (objfile_type->builtin_char) = 1;
5498 objfile_type->builtin_signed_char
5499 = init_integer_type (objfile, TARGET_CHAR_BIT,
5501 objfile_type->builtin_unsigned_char
5502 = init_integer_type (objfile, TARGET_CHAR_BIT,
5503 1, "unsigned char");
5504 objfile_type->builtin_short
5505 = init_integer_type (objfile, gdbarch_short_bit (gdbarch),
5507 objfile_type->builtin_unsigned_short
5508 = init_integer_type (objfile, gdbarch_short_bit (gdbarch),
5509 1, "unsigned short");
5510 objfile_type->builtin_int
5511 = init_integer_type (objfile, gdbarch_int_bit (gdbarch),
5513 objfile_type->builtin_unsigned_int
5514 = init_integer_type (objfile, gdbarch_int_bit (gdbarch),
5516 objfile_type->builtin_long
5517 = init_integer_type (objfile, gdbarch_long_bit (gdbarch),
5519 objfile_type->builtin_unsigned_long
5520 = init_integer_type (objfile, gdbarch_long_bit (gdbarch),
5521 1, "unsigned long");
5522 objfile_type->builtin_long_long
5523 = init_integer_type (objfile, gdbarch_long_long_bit (gdbarch),
5525 objfile_type->builtin_unsigned_long_long
5526 = init_integer_type (objfile, gdbarch_long_long_bit (gdbarch),
5527 1, "unsigned long long");
5528 objfile_type->builtin_float
5529 = init_float_type (objfile, gdbarch_float_bit (gdbarch),
5530 "float", gdbarch_float_format (gdbarch));
5531 objfile_type->builtin_double
5532 = init_float_type (objfile, gdbarch_double_bit (gdbarch),
5533 "double", gdbarch_double_format (gdbarch));
5534 objfile_type->builtin_long_double
5535 = init_float_type (objfile, gdbarch_long_double_bit (gdbarch),
5536 "long double", gdbarch_long_double_format (gdbarch));
5538 /* This type represents a type that was unrecognized in symbol read-in. */
5539 objfile_type->builtin_error
5540 = init_type (objfile, TYPE_CODE_ERROR, 0, "<unknown type>");
5542 /* The following set of types is used for symbols with no
5543 debug information. */
5544 objfile_type->nodebug_text_symbol
5545 = init_type (objfile, TYPE_CODE_FUNC, TARGET_CHAR_BIT,
5546 "<text variable, no debug info>");
5547 objfile_type->nodebug_text_gnu_ifunc_symbol
5548 = init_type (objfile, TYPE_CODE_FUNC, TARGET_CHAR_BIT,
5549 "<text gnu-indirect-function variable, no debug info>");
5550 TYPE_GNU_IFUNC (objfile_type->nodebug_text_gnu_ifunc_symbol) = 1;
5551 objfile_type->nodebug_got_plt_symbol
5552 = init_pointer_type (objfile, gdbarch_addr_bit (gdbarch),
5553 "<text from jump slot in .got.plt, no debug info>",
5554 objfile_type->nodebug_text_symbol);
5555 objfile_type->nodebug_data_symbol
5556 = init_nodebug_var_type (objfile, "<data variable, no debug info>");
5557 objfile_type->nodebug_unknown_symbol
5558 = init_nodebug_var_type (objfile, "<variable (not text or data), no debug info>");
5559 objfile_type->nodebug_tls_symbol
5560 = init_nodebug_var_type (objfile, "<thread local variable, no debug info>");
5562 /* NOTE: on some targets, addresses and pointers are not necessarily
5566 - gdb's `struct type' always describes the target's
5568 - gdb's `struct value' objects should always hold values in
5570 - gdb's CORE_ADDR values are addresses in the unified virtual
5571 address space that the assembler and linker work with. Thus,
5572 since target_read_memory takes a CORE_ADDR as an argument, it
5573 can access any memory on the target, even if the processor has
5574 separate code and data address spaces.
5576 In this context, objfile_type->builtin_core_addr is a bit odd:
5577 it's a target type for a value the target will never see. It's
5578 only used to hold the values of (typeless) linker symbols, which
5579 are indeed in the unified virtual address space. */
5581 objfile_type->builtin_core_addr
5582 = init_integer_type (objfile, gdbarch_addr_bit (gdbarch), 1,
5585 set_objfile_data (objfile, objfile_type_data, objfile_type);
5586 return objfile_type;
5590 _initialize_gdbtypes (void)
5592 gdbtypes_data = gdbarch_data_register_post_init (gdbtypes_post_init);
5593 objfile_type_data = register_objfile_data ();
5595 add_setshow_zuinteger_cmd ("overload", no_class, &overload_debug,
5596 _("Set debugging of C++ overloading."),
5597 _("Show debugging of C++ overloading."),
5598 _("When enabled, ranking of the "
5599 "functions is displayed."),
5601 show_overload_debug,
5602 &setdebuglist, &showdebuglist);
5604 /* Add user knob for controlling resolution of opaque types. */
5605 add_setshow_boolean_cmd ("opaque-type-resolution", class_support,
5606 &opaque_type_resolution,
5607 _("Set resolution of opaque struct/class/union"
5608 " types (if set before loading symbols)."),
5609 _("Show resolution of opaque struct/class/union"
5610 " types (if set before loading symbols)."),
5612 show_opaque_type_resolution,
5613 &setlist, &showlist);
5615 /* Add an option to permit non-strict type checking. */
5616 add_setshow_boolean_cmd ("type", class_support,
5617 &strict_type_checking,
5618 _("Set strict type checking."),
5619 _("Show strict type checking."),
5621 show_strict_type_checking,
5622 &setchecklist, &showchecklist);