1 /* Support routines for manipulating internal types for GDB.
3 Copyright (C) 1992-2016 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"
42 /* Initialize BADNESS constants. */
44 const struct rank LENGTH_MISMATCH_BADNESS = {100,0};
46 const struct rank TOO_FEW_PARAMS_BADNESS = {100,0};
47 const struct rank INCOMPATIBLE_TYPE_BADNESS = {100,0};
49 const struct rank EXACT_MATCH_BADNESS = {0,0};
51 const struct rank INTEGER_PROMOTION_BADNESS = {1,0};
52 const struct rank FLOAT_PROMOTION_BADNESS = {1,0};
53 const struct rank BASE_PTR_CONVERSION_BADNESS = {1,0};
54 const struct rank INTEGER_CONVERSION_BADNESS = {2,0};
55 const struct rank FLOAT_CONVERSION_BADNESS = {2,0};
56 const struct rank INT_FLOAT_CONVERSION_BADNESS = {2,0};
57 const struct rank VOID_PTR_CONVERSION_BADNESS = {2,0};
58 const struct rank BOOL_CONVERSION_BADNESS = {3,0};
59 const struct rank BASE_CONVERSION_BADNESS = {2,0};
60 const struct rank REFERENCE_CONVERSION_BADNESS = {2,0};
61 const struct rank NULL_POINTER_CONVERSION_BADNESS = {2,0};
62 const struct rank NS_POINTER_CONVERSION_BADNESS = {10,0};
63 const struct rank NS_INTEGER_POINTER_CONVERSION_BADNESS = {3,0};
65 /* Floatformat pairs. */
66 const struct floatformat *floatformats_ieee_half[BFD_ENDIAN_UNKNOWN] = {
67 &floatformat_ieee_half_big,
68 &floatformat_ieee_half_little
70 const struct floatformat *floatformats_ieee_single[BFD_ENDIAN_UNKNOWN] = {
71 &floatformat_ieee_single_big,
72 &floatformat_ieee_single_little
74 const struct floatformat *floatformats_ieee_double[BFD_ENDIAN_UNKNOWN] = {
75 &floatformat_ieee_double_big,
76 &floatformat_ieee_double_little
78 const struct floatformat *floatformats_ieee_double_littlebyte_bigword[BFD_ENDIAN_UNKNOWN] = {
79 &floatformat_ieee_double_big,
80 &floatformat_ieee_double_littlebyte_bigword
82 const struct floatformat *floatformats_i387_ext[BFD_ENDIAN_UNKNOWN] = {
83 &floatformat_i387_ext,
86 const struct floatformat *floatformats_m68881_ext[BFD_ENDIAN_UNKNOWN] = {
87 &floatformat_m68881_ext,
88 &floatformat_m68881_ext
90 const struct floatformat *floatformats_arm_ext[BFD_ENDIAN_UNKNOWN] = {
91 &floatformat_arm_ext_big,
92 &floatformat_arm_ext_littlebyte_bigword
94 const struct floatformat *floatformats_ia64_spill[BFD_ENDIAN_UNKNOWN] = {
95 &floatformat_ia64_spill_big,
96 &floatformat_ia64_spill_little
98 const struct floatformat *floatformats_ia64_quad[BFD_ENDIAN_UNKNOWN] = {
99 &floatformat_ia64_quad_big,
100 &floatformat_ia64_quad_little
102 const struct floatformat *floatformats_vax_f[BFD_ENDIAN_UNKNOWN] = {
106 const struct floatformat *floatformats_vax_d[BFD_ENDIAN_UNKNOWN] = {
110 const struct floatformat *floatformats_ibm_long_double[BFD_ENDIAN_UNKNOWN] = {
111 &floatformat_ibm_long_double_big,
112 &floatformat_ibm_long_double_little
115 /* Should opaque types be resolved? */
117 static int opaque_type_resolution = 1;
119 /* A flag to enable printing of debugging information of C++
122 unsigned int overload_debug = 0;
124 /* A flag to enable strict type checking. */
126 static int strict_type_checking = 1;
128 /* A function to show whether opaque types are resolved. */
131 show_opaque_type_resolution (struct ui_file *file, int from_tty,
132 struct cmd_list_element *c,
135 fprintf_filtered (file, _("Resolution of opaque struct/class/union types "
136 "(if set before loading symbols) is %s.\n"),
140 /* A function to show whether C++ overload debugging is enabled. */
143 show_overload_debug (struct ui_file *file, int from_tty,
144 struct cmd_list_element *c, const char *value)
146 fprintf_filtered (file, _("Debugging of C++ overloading is %s.\n"),
150 /* A function to show the status of strict type checking. */
153 show_strict_type_checking (struct ui_file *file, int from_tty,
154 struct cmd_list_element *c, const char *value)
156 fprintf_filtered (file, _("Strict type checking is %s.\n"), value);
160 /* Allocate a new OBJFILE-associated type structure and fill it
161 with some defaults. Space for the type structure is allocated
162 on the objfile's objfile_obstack. */
165 alloc_type (struct objfile *objfile)
169 gdb_assert (objfile != NULL);
171 /* Alloc the structure and start off with all fields zeroed. */
172 type = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct type);
173 TYPE_MAIN_TYPE (type) = OBSTACK_ZALLOC (&objfile->objfile_obstack,
175 OBJSTAT (objfile, n_types++);
177 TYPE_OBJFILE_OWNED (type) = 1;
178 TYPE_OWNER (type).objfile = objfile;
180 /* Initialize the fields that might not be zero. */
182 TYPE_CODE (type) = TYPE_CODE_UNDEF;
183 TYPE_CHAIN (type) = type; /* Chain back to itself. */
188 /* Allocate a new GDBARCH-associated type structure and fill it
189 with some defaults. Space for the type structure is allocated
190 on the obstack associated with GDBARCH. */
193 alloc_type_arch (struct gdbarch *gdbarch)
197 gdb_assert (gdbarch != NULL);
199 /* Alloc the structure and start off with all fields zeroed. */
201 type = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct type);
202 TYPE_MAIN_TYPE (type) = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct main_type);
204 TYPE_OBJFILE_OWNED (type) = 0;
205 TYPE_OWNER (type).gdbarch = gdbarch;
207 /* Initialize the fields that might not be zero. */
209 TYPE_CODE (type) = TYPE_CODE_UNDEF;
210 TYPE_CHAIN (type) = type; /* Chain back to itself. */
215 /* If TYPE is objfile-associated, allocate a new type structure
216 associated with the same objfile. If TYPE is gdbarch-associated,
217 allocate a new type structure associated with the same gdbarch. */
220 alloc_type_copy (const struct type *type)
222 if (TYPE_OBJFILE_OWNED (type))
223 return alloc_type (TYPE_OWNER (type).objfile);
225 return alloc_type_arch (TYPE_OWNER (type).gdbarch);
228 /* If TYPE is gdbarch-associated, return that architecture.
229 If TYPE is objfile-associated, return that objfile's architecture. */
232 get_type_arch (const struct type *type)
234 if (TYPE_OBJFILE_OWNED (type))
235 return get_objfile_arch (TYPE_OWNER (type).objfile);
237 return TYPE_OWNER (type).gdbarch;
240 /* See gdbtypes.h. */
243 get_target_type (struct type *type)
247 type = TYPE_TARGET_TYPE (type);
249 type = check_typedef (type);
255 /* See gdbtypes.h. */
258 type_length_units (struct type *type)
260 struct gdbarch *arch = get_type_arch (type);
261 int unit_size = gdbarch_addressable_memory_unit_size (arch);
263 return TYPE_LENGTH (type) / unit_size;
266 /* Alloc a new type instance structure, fill it with some defaults,
267 and point it at OLDTYPE. Allocate the new type instance from the
268 same place as OLDTYPE. */
271 alloc_type_instance (struct type *oldtype)
275 /* Allocate the structure. */
277 if (! TYPE_OBJFILE_OWNED (oldtype))
278 type = XCNEW (struct type);
280 type = OBSTACK_ZALLOC (&TYPE_OBJFILE (oldtype)->objfile_obstack,
283 TYPE_MAIN_TYPE (type) = TYPE_MAIN_TYPE (oldtype);
285 TYPE_CHAIN (type) = type; /* Chain back to itself for now. */
290 /* Clear all remnants of the previous type at TYPE, in preparation for
291 replacing it with something else. Preserve owner information. */
294 smash_type (struct type *type)
296 int objfile_owned = TYPE_OBJFILE_OWNED (type);
297 union type_owner owner = TYPE_OWNER (type);
299 memset (TYPE_MAIN_TYPE (type), 0, sizeof (struct main_type));
301 /* Restore owner information. */
302 TYPE_OBJFILE_OWNED (type) = objfile_owned;
303 TYPE_OWNER (type) = owner;
305 /* For now, delete the rings. */
306 TYPE_CHAIN (type) = type;
308 /* For now, leave the pointer/reference types alone. */
311 /* Lookup a pointer to a type TYPE. TYPEPTR, if nonzero, points
312 to a pointer to memory where the pointer type should be stored.
313 If *TYPEPTR is zero, update it to point to the pointer type we return.
314 We allocate new memory if needed. */
317 make_pointer_type (struct type *type, struct type **typeptr)
319 struct type *ntype; /* New type */
322 ntype = TYPE_POINTER_TYPE (type);
327 return ntype; /* Don't care about alloc,
328 and have new type. */
329 else if (*typeptr == 0)
331 *typeptr = ntype; /* Tracking alloc, and have new type. */
336 if (typeptr == 0 || *typeptr == 0) /* We'll need to allocate one. */
338 ntype = alloc_type_copy (type);
342 else /* We have storage, but need to reset it. */
345 chain = TYPE_CHAIN (ntype);
347 TYPE_CHAIN (ntype) = chain;
350 TYPE_TARGET_TYPE (ntype) = type;
351 TYPE_POINTER_TYPE (type) = ntype;
353 /* FIXME! Assumes the machine has only one representation for pointers! */
356 = gdbarch_ptr_bit (get_type_arch (type)) / TARGET_CHAR_BIT;
357 TYPE_CODE (ntype) = TYPE_CODE_PTR;
359 /* Mark pointers as unsigned. The target converts between pointers
360 and addresses (CORE_ADDRs) using gdbarch_pointer_to_address and
361 gdbarch_address_to_pointer. */
362 TYPE_UNSIGNED (ntype) = 1;
364 /* Update the length of all the other variants of this type. */
365 chain = TYPE_CHAIN (ntype);
366 while (chain != ntype)
368 TYPE_LENGTH (chain) = TYPE_LENGTH (ntype);
369 chain = TYPE_CHAIN (chain);
375 /* Given a type TYPE, return a type of pointers to that type.
376 May need to construct such a type if this is the first use. */
379 lookup_pointer_type (struct type *type)
381 return make_pointer_type (type, (struct type **) 0);
384 /* Lookup a C++ `reference' to a type TYPE. TYPEPTR, if nonzero,
385 points to a pointer to memory where the reference type should be
386 stored. If *TYPEPTR is zero, update it to point to the reference
387 type we return. We allocate new memory if needed. */
390 make_reference_type (struct type *type, struct type **typeptr)
392 struct type *ntype; /* New type */
395 ntype = TYPE_REFERENCE_TYPE (type);
400 return ntype; /* Don't care about alloc,
401 and have new type. */
402 else if (*typeptr == 0)
404 *typeptr = ntype; /* Tracking alloc, and have new type. */
409 if (typeptr == 0 || *typeptr == 0) /* We'll need to allocate one. */
411 ntype = alloc_type_copy (type);
415 else /* We have storage, but need to reset it. */
418 chain = TYPE_CHAIN (ntype);
420 TYPE_CHAIN (ntype) = chain;
423 TYPE_TARGET_TYPE (ntype) = type;
424 TYPE_REFERENCE_TYPE (type) = ntype;
426 /* FIXME! Assume the machine has only one representation for
427 references, and that it matches the (only) representation for
430 TYPE_LENGTH (ntype) =
431 gdbarch_ptr_bit (get_type_arch (type)) / TARGET_CHAR_BIT;
432 TYPE_CODE (ntype) = TYPE_CODE_REF;
434 if (!TYPE_REFERENCE_TYPE (type)) /* Remember it, if don't have one. */
435 TYPE_REFERENCE_TYPE (type) = ntype;
437 /* Update the length of all the other variants of this type. */
438 chain = TYPE_CHAIN (ntype);
439 while (chain != ntype)
441 TYPE_LENGTH (chain) = TYPE_LENGTH (ntype);
442 chain = TYPE_CHAIN (chain);
448 /* Same as above, but caller doesn't care about memory allocation
452 lookup_reference_type (struct type *type)
454 return make_reference_type (type, (struct type **) 0);
457 /* Lookup a function type that returns type TYPE. TYPEPTR, if
458 nonzero, points to a pointer to memory where the function type
459 should be stored. If *TYPEPTR is zero, update it to point to the
460 function type we return. We allocate new memory if needed. */
463 make_function_type (struct type *type, struct type **typeptr)
465 struct type *ntype; /* New type */
467 if (typeptr == 0 || *typeptr == 0) /* We'll need to allocate one. */
469 ntype = alloc_type_copy (type);
473 else /* We have storage, but need to reset it. */
479 TYPE_TARGET_TYPE (ntype) = type;
481 TYPE_LENGTH (ntype) = 1;
482 TYPE_CODE (ntype) = TYPE_CODE_FUNC;
484 INIT_FUNC_SPECIFIC (ntype);
489 /* Given a type TYPE, return a type of functions that return that type.
490 May need to construct such a type if this is the first use. */
493 lookup_function_type (struct type *type)
495 return make_function_type (type, (struct type **) 0);
498 /* Given a type TYPE and argument types, return the appropriate
499 function type. If the final type in PARAM_TYPES is NULL, make a
503 lookup_function_type_with_arguments (struct type *type,
505 struct type **param_types)
507 struct type *fn = make_function_type (type, (struct type **) 0);
512 if (param_types[nparams - 1] == NULL)
515 TYPE_VARARGS (fn) = 1;
517 else if (TYPE_CODE (check_typedef (param_types[nparams - 1]))
521 /* Caller should have ensured this. */
522 gdb_assert (nparams == 0);
523 TYPE_PROTOTYPED (fn) = 1;
527 TYPE_NFIELDS (fn) = nparams;
529 = (struct field *) TYPE_ZALLOC (fn, nparams * sizeof (struct field));
530 for (i = 0; i < nparams; ++i)
531 TYPE_FIELD_TYPE (fn, i) = param_types[i];
536 /* Identify address space identifier by name --
537 return the integer flag defined in gdbtypes.h. */
540 address_space_name_to_int (struct gdbarch *gdbarch, char *space_identifier)
544 /* Check for known address space delimiters. */
545 if (!strcmp (space_identifier, "code"))
546 return TYPE_INSTANCE_FLAG_CODE_SPACE;
547 else if (!strcmp (space_identifier, "data"))
548 return TYPE_INSTANCE_FLAG_DATA_SPACE;
549 else if (gdbarch_address_class_name_to_type_flags_p (gdbarch)
550 && gdbarch_address_class_name_to_type_flags (gdbarch,
555 error (_("Unknown address space specifier: \"%s\""), space_identifier);
558 /* Identify address space identifier by integer flag as defined in
559 gdbtypes.h -- return the string version of the adress space name. */
562 address_space_int_to_name (struct gdbarch *gdbarch, int space_flag)
564 if (space_flag & TYPE_INSTANCE_FLAG_CODE_SPACE)
566 else if (space_flag & TYPE_INSTANCE_FLAG_DATA_SPACE)
568 else if ((space_flag & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL)
569 && gdbarch_address_class_type_flags_to_name_p (gdbarch))
570 return gdbarch_address_class_type_flags_to_name (gdbarch, space_flag);
575 /* Create a new type with instance flags NEW_FLAGS, based on TYPE.
577 If STORAGE is non-NULL, create the new type instance there.
578 STORAGE must be in the same obstack as TYPE. */
581 make_qualified_type (struct type *type, int new_flags,
582 struct type *storage)
589 if (TYPE_INSTANCE_FLAGS (ntype) == new_flags)
591 ntype = TYPE_CHAIN (ntype);
593 while (ntype != type);
595 /* Create a new type instance. */
597 ntype = alloc_type_instance (type);
600 /* If STORAGE was provided, it had better be in the same objfile
601 as TYPE. Otherwise, we can't link it into TYPE's cv chain:
602 if one objfile is freed and the other kept, we'd have
603 dangling pointers. */
604 gdb_assert (TYPE_OBJFILE (type) == TYPE_OBJFILE (storage));
607 TYPE_MAIN_TYPE (ntype) = TYPE_MAIN_TYPE (type);
608 TYPE_CHAIN (ntype) = ntype;
611 /* Pointers or references to the original type are not relevant to
613 TYPE_POINTER_TYPE (ntype) = (struct type *) 0;
614 TYPE_REFERENCE_TYPE (ntype) = (struct type *) 0;
616 /* Chain the new qualified type to the old type. */
617 TYPE_CHAIN (ntype) = TYPE_CHAIN (type);
618 TYPE_CHAIN (type) = ntype;
620 /* Now set the instance flags and return the new type. */
621 TYPE_INSTANCE_FLAGS (ntype) = new_flags;
623 /* Set length of new type to that of the original type. */
624 TYPE_LENGTH (ntype) = TYPE_LENGTH (type);
629 /* Make an address-space-delimited variant of a type -- a type that
630 is identical to the one supplied except that it has an address
631 space attribute attached to it (such as "code" or "data").
633 The space attributes "code" and "data" are for Harvard
634 architectures. The address space attributes are for architectures
635 which have alternately sized pointers or pointers with alternate
639 make_type_with_address_space (struct type *type, int space_flag)
641 int new_flags = ((TYPE_INSTANCE_FLAGS (type)
642 & ~(TYPE_INSTANCE_FLAG_CODE_SPACE
643 | TYPE_INSTANCE_FLAG_DATA_SPACE
644 | TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL))
647 return make_qualified_type (type, new_flags, NULL);
650 /* Make a "c-v" variant of a type -- a type that is identical to the
651 one supplied except that it may have const or volatile attributes
652 CNST is a flag for setting the const attribute
653 VOLTL is a flag for setting the volatile attribute
654 TYPE is the base type whose variant we are creating.
656 If TYPEPTR and *TYPEPTR are non-zero, then *TYPEPTR points to
657 storage to hold the new qualified type; *TYPEPTR and TYPE must be
658 in the same objfile. Otherwise, allocate fresh memory for the new
659 type whereever TYPE lives. If TYPEPTR is non-zero, set it to the
660 new type we construct. */
663 make_cv_type (int cnst, int voltl,
665 struct type **typeptr)
667 struct type *ntype; /* New type */
669 int new_flags = (TYPE_INSTANCE_FLAGS (type)
670 & ~(TYPE_INSTANCE_FLAG_CONST
671 | TYPE_INSTANCE_FLAG_VOLATILE));
674 new_flags |= TYPE_INSTANCE_FLAG_CONST;
677 new_flags |= TYPE_INSTANCE_FLAG_VOLATILE;
679 if (typeptr && *typeptr != NULL)
681 /* TYPE and *TYPEPTR must be in the same objfile. We can't have
682 a C-V variant chain that threads across objfiles: if one
683 objfile gets freed, then the other has a broken C-V chain.
685 This code used to try to copy over the main type from TYPE to
686 *TYPEPTR if they were in different objfiles, but that's
687 wrong, too: TYPE may have a field list or member function
688 lists, which refer to types of their own, etc. etc. The
689 whole shebang would need to be copied over recursively; you
690 can't have inter-objfile pointers. The only thing to do is
691 to leave stub types as stub types, and look them up afresh by
692 name each time you encounter them. */
693 gdb_assert (TYPE_OBJFILE (*typeptr) == TYPE_OBJFILE (type));
696 ntype = make_qualified_type (type, new_flags,
697 typeptr ? *typeptr : NULL);
705 /* Make a 'restrict'-qualified version of TYPE. */
708 make_restrict_type (struct type *type)
710 return make_qualified_type (type,
711 (TYPE_INSTANCE_FLAGS (type)
712 | TYPE_INSTANCE_FLAG_RESTRICT),
716 /* Make a type without const, volatile, or restrict. */
719 make_unqualified_type (struct type *type)
721 return make_qualified_type (type,
722 (TYPE_INSTANCE_FLAGS (type)
723 & ~(TYPE_INSTANCE_FLAG_CONST
724 | TYPE_INSTANCE_FLAG_VOLATILE
725 | TYPE_INSTANCE_FLAG_RESTRICT)),
729 /* Make a '_Atomic'-qualified version of TYPE. */
732 make_atomic_type (struct type *type)
734 return make_qualified_type (type,
735 (TYPE_INSTANCE_FLAGS (type)
736 | TYPE_INSTANCE_FLAG_ATOMIC),
740 /* Replace the contents of ntype with the type *type. This changes the
741 contents, rather than the pointer for TYPE_MAIN_TYPE (ntype); thus
742 the changes are propogated to all types in the TYPE_CHAIN.
744 In order to build recursive types, it's inevitable that we'll need
745 to update types in place --- but this sort of indiscriminate
746 smashing is ugly, and needs to be replaced with something more
747 controlled. TYPE_MAIN_TYPE is a step in this direction; it's not
748 clear if more steps are needed. */
751 replace_type (struct type *ntype, struct type *type)
755 /* These two types had better be in the same objfile. Otherwise,
756 the assignment of one type's main type structure to the other
757 will produce a type with references to objects (names; field
758 lists; etc.) allocated on an objfile other than its own. */
759 gdb_assert (TYPE_OBJFILE (ntype) == TYPE_OBJFILE (type));
761 *TYPE_MAIN_TYPE (ntype) = *TYPE_MAIN_TYPE (type);
763 /* The type length is not a part of the main type. Update it for
764 each type on the variant chain. */
768 /* Assert that this element of the chain has no address-class bits
769 set in its flags. Such type variants might have type lengths
770 which are supposed to be different from the non-address-class
771 variants. This assertion shouldn't ever be triggered because
772 symbol readers which do construct address-class variants don't
773 call replace_type(). */
774 gdb_assert (TYPE_ADDRESS_CLASS_ALL (chain) == 0);
776 TYPE_LENGTH (chain) = TYPE_LENGTH (type);
777 chain = TYPE_CHAIN (chain);
779 while (ntype != chain);
781 /* Assert that the two types have equivalent instance qualifiers.
782 This should be true for at least all of our debug readers. */
783 gdb_assert (TYPE_INSTANCE_FLAGS (ntype) == TYPE_INSTANCE_FLAGS (type));
786 /* Implement direct support for MEMBER_TYPE in GNU C++.
787 May need to construct such a type if this is the first use.
788 The TYPE is the type of the member. The DOMAIN is the type
789 of the aggregate that the member belongs to. */
792 lookup_memberptr_type (struct type *type, struct type *domain)
796 mtype = alloc_type_copy (type);
797 smash_to_memberptr_type (mtype, domain, type);
801 /* Return a pointer-to-method type, for a method of type TO_TYPE. */
804 lookup_methodptr_type (struct type *to_type)
808 mtype = alloc_type_copy (to_type);
809 smash_to_methodptr_type (mtype, to_type);
813 /* Allocate a stub method whose return type is TYPE. This apparently
814 happens for speed of symbol reading, since parsing out the
815 arguments to the method is cpu-intensive, the way we are doing it.
816 So, we will fill in arguments later. This always returns a fresh
820 allocate_stub_method (struct type *type)
824 mtype = alloc_type_copy (type);
825 TYPE_CODE (mtype) = TYPE_CODE_METHOD;
826 TYPE_LENGTH (mtype) = 1;
827 TYPE_STUB (mtype) = 1;
828 TYPE_TARGET_TYPE (mtype) = type;
829 /* TYPE_SELF_TYPE (mtype) = unknown yet */
833 /* Create a range type with a dynamic range from LOW_BOUND to
834 HIGH_BOUND, inclusive. See create_range_type for further details. */
837 create_range_type (struct type *result_type, struct type *index_type,
838 const struct dynamic_prop *low_bound,
839 const struct dynamic_prop *high_bound)
841 if (result_type == NULL)
842 result_type = alloc_type_copy (index_type);
843 TYPE_CODE (result_type) = TYPE_CODE_RANGE;
844 TYPE_TARGET_TYPE (result_type) = index_type;
845 if (TYPE_STUB (index_type))
846 TYPE_TARGET_STUB (result_type) = 1;
848 TYPE_LENGTH (result_type) = TYPE_LENGTH (check_typedef (index_type));
850 TYPE_RANGE_DATA (result_type) = (struct range_bounds *)
851 TYPE_ZALLOC (result_type, sizeof (struct range_bounds));
852 TYPE_RANGE_DATA (result_type)->low = *low_bound;
853 TYPE_RANGE_DATA (result_type)->high = *high_bound;
855 if (low_bound->kind == PROP_CONST && low_bound->data.const_val >= 0)
856 TYPE_UNSIGNED (result_type) = 1;
858 /* Ada allows the declaration of range types whose upper bound is
859 less than the lower bound, so checking the lower bound is not
860 enough. Make sure we do not mark a range type whose upper bound
861 is negative as unsigned. */
862 if (high_bound->kind == PROP_CONST && high_bound->data.const_val < 0)
863 TYPE_UNSIGNED (result_type) = 0;
868 /* Create a range type using either a blank type supplied in
869 RESULT_TYPE, or creating a new type, inheriting the objfile from
872 Indices will be of type INDEX_TYPE, and will range from LOW_BOUND
873 to HIGH_BOUND, inclusive.
875 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
876 sure it is TYPE_CODE_UNDEF before we bash it into a range type? */
879 create_static_range_type (struct type *result_type, struct type *index_type,
880 LONGEST low_bound, LONGEST high_bound)
882 struct dynamic_prop low, high;
884 low.kind = PROP_CONST;
885 low.data.const_val = low_bound;
887 high.kind = PROP_CONST;
888 high.data.const_val = high_bound;
890 result_type = create_range_type (result_type, index_type, &low, &high);
895 /* Predicate tests whether BOUNDS are static. Returns 1 if all bounds values
896 are static, otherwise returns 0. */
899 has_static_range (const struct range_bounds *bounds)
901 return (bounds->low.kind == PROP_CONST
902 && bounds->high.kind == PROP_CONST);
906 /* Set *LOWP and *HIGHP to the lower and upper bounds of discrete type
907 TYPE. Return 1 if type is a range type, 0 if it is discrete (and
908 bounds will fit in LONGEST), or -1 otherwise. */
911 get_discrete_bounds (struct type *type, LONGEST *lowp, LONGEST *highp)
913 type = check_typedef (type);
914 switch (TYPE_CODE (type))
916 case TYPE_CODE_RANGE:
917 *lowp = TYPE_LOW_BOUND (type);
918 *highp = TYPE_HIGH_BOUND (type);
921 if (TYPE_NFIELDS (type) > 0)
923 /* The enums may not be sorted by value, so search all
927 *lowp = *highp = TYPE_FIELD_ENUMVAL (type, 0);
928 for (i = 0; i < TYPE_NFIELDS (type); i++)
930 if (TYPE_FIELD_ENUMVAL (type, i) < *lowp)
931 *lowp = TYPE_FIELD_ENUMVAL (type, i);
932 if (TYPE_FIELD_ENUMVAL (type, i) > *highp)
933 *highp = TYPE_FIELD_ENUMVAL (type, i);
936 /* Set unsigned indicator if warranted. */
939 TYPE_UNSIGNED (type) = 1;
953 if (TYPE_LENGTH (type) > sizeof (LONGEST)) /* Too big */
955 if (!TYPE_UNSIGNED (type))
957 *lowp = -(1 << (TYPE_LENGTH (type) * TARGET_CHAR_BIT - 1));
961 /* ... fall through for unsigned ints ... */
964 /* This round-about calculation is to avoid shifting by
965 TYPE_LENGTH (type) * TARGET_CHAR_BIT, which will not work
966 if TYPE_LENGTH (type) == sizeof (LONGEST). */
967 *highp = 1 << (TYPE_LENGTH (type) * TARGET_CHAR_BIT - 1);
968 *highp = (*highp - 1) | *highp;
975 /* Assuming TYPE is a simple, non-empty array type, compute its upper
976 and lower bound. Save the low bound into LOW_BOUND if not NULL.
977 Save the high bound into HIGH_BOUND if not NULL.
979 Return 1 if the operation was successful. Return zero otherwise,
980 in which case the values of LOW_BOUND and HIGH_BOUNDS are unmodified.
982 We now simply use get_discrete_bounds call to get the values
983 of the low and high bounds.
984 get_discrete_bounds can return three values:
985 1, meaning that index is a range,
986 0, meaning that index is a discrete type,
987 or -1 for failure. */
990 get_array_bounds (struct type *type, LONGEST *low_bound, LONGEST *high_bound)
992 struct type *index = TYPE_INDEX_TYPE (type);
1000 res = get_discrete_bounds (index, &low, &high);
1004 /* Check if the array bounds are undefined. */
1006 && ((low_bound && TYPE_ARRAY_LOWER_BOUND_IS_UNDEFINED (type))
1007 || (high_bound && TYPE_ARRAY_UPPER_BOUND_IS_UNDEFINED (type))))
1019 /* Assuming that TYPE is a discrete type and VAL is a valid integer
1020 representation of a value of this type, save the corresponding
1021 position number in POS.
1023 Its differs from VAL only in the case of enumeration types. In
1024 this case, the position number of the value of the first listed
1025 enumeration literal is zero; the position number of the value of
1026 each subsequent enumeration literal is one more than that of its
1027 predecessor in the list.
1029 Return 1 if the operation was successful. Return zero otherwise,
1030 in which case the value of POS is unmodified.
1034 discrete_position (struct type *type, LONGEST val, LONGEST *pos)
1036 if (TYPE_CODE (type) == TYPE_CODE_ENUM)
1040 for (i = 0; i < TYPE_NFIELDS (type); i += 1)
1042 if (val == TYPE_FIELD_ENUMVAL (type, i))
1048 /* Invalid enumeration value. */
1058 /* Create an array type using either a blank type supplied in
1059 RESULT_TYPE, or creating a new type, inheriting the objfile from
1062 Elements will be of type ELEMENT_TYPE, the indices will be of type
1065 If BIT_STRIDE is not zero, build a packed array type whose element
1066 size is BIT_STRIDE. Otherwise, ignore this parameter.
1068 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
1069 sure it is TYPE_CODE_UNDEF before we bash it into an array
1073 create_array_type_with_stride (struct type *result_type,
1074 struct type *element_type,
1075 struct type *range_type,
1076 unsigned int bit_stride)
1078 if (result_type == NULL)
1079 result_type = alloc_type_copy (range_type);
1081 TYPE_CODE (result_type) = TYPE_CODE_ARRAY;
1082 TYPE_TARGET_TYPE (result_type) = element_type;
1083 if (has_static_range (TYPE_RANGE_DATA (range_type))
1084 && (!type_not_associated (result_type)
1085 && !type_not_allocated (result_type)))
1087 LONGEST low_bound, high_bound;
1089 if (get_discrete_bounds (range_type, &low_bound, &high_bound) < 0)
1090 low_bound = high_bound = 0;
1091 element_type = check_typedef (element_type);
1092 /* Be careful when setting the array length. Ada arrays can be
1093 empty arrays with the high_bound being smaller than the low_bound.
1094 In such cases, the array length should be zero. */
1095 if (high_bound < low_bound)
1096 TYPE_LENGTH (result_type) = 0;
1097 else if (bit_stride > 0)
1098 TYPE_LENGTH (result_type) =
1099 (bit_stride * (high_bound - low_bound + 1) + 7) / 8;
1101 TYPE_LENGTH (result_type) =
1102 TYPE_LENGTH (element_type) * (high_bound - low_bound + 1);
1106 /* This type is dynamic and its length needs to be computed
1107 on demand. In the meantime, avoid leaving the TYPE_LENGTH
1108 undefined by setting it to zero. Although we are not expected
1109 to trust TYPE_LENGTH in this case, setting the size to zero
1110 allows us to avoid allocating objects of random sizes in case
1111 we accidently do. */
1112 TYPE_LENGTH (result_type) = 0;
1115 TYPE_NFIELDS (result_type) = 1;
1116 TYPE_FIELDS (result_type) =
1117 (struct field *) TYPE_ZALLOC (result_type, sizeof (struct field));
1118 TYPE_INDEX_TYPE (result_type) = range_type;
1120 TYPE_FIELD_BITSIZE (result_type, 0) = bit_stride;
1122 /* TYPE_FLAG_TARGET_STUB will take care of zero length arrays. */
1123 if (TYPE_LENGTH (result_type) == 0)
1124 TYPE_TARGET_STUB (result_type) = 1;
1129 /* Same as create_array_type_with_stride but with no bit_stride
1130 (BIT_STRIDE = 0), thus building an unpacked array. */
1133 create_array_type (struct type *result_type,
1134 struct type *element_type,
1135 struct type *range_type)
1137 return create_array_type_with_stride (result_type, element_type,
1142 lookup_array_range_type (struct type *element_type,
1143 LONGEST low_bound, LONGEST high_bound)
1145 struct gdbarch *gdbarch = get_type_arch (element_type);
1146 struct type *index_type = builtin_type (gdbarch)->builtin_int;
1147 struct type *range_type
1148 = create_static_range_type (NULL, index_type, low_bound, high_bound);
1150 return create_array_type (NULL, element_type, range_type);
1153 /* Create a string type using either a blank type supplied in
1154 RESULT_TYPE, or creating a new type. String types are similar
1155 enough to array of char types that we can use create_array_type to
1156 build the basic type and then bash it into a string type.
1158 For fixed length strings, the range type contains 0 as the lower
1159 bound and the length of the string minus one as the upper bound.
1161 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
1162 sure it is TYPE_CODE_UNDEF before we bash it into a string
1166 create_string_type (struct type *result_type,
1167 struct type *string_char_type,
1168 struct type *range_type)
1170 result_type = create_array_type (result_type,
1173 TYPE_CODE (result_type) = TYPE_CODE_STRING;
1178 lookup_string_range_type (struct type *string_char_type,
1179 LONGEST low_bound, LONGEST high_bound)
1181 struct type *result_type;
1183 result_type = lookup_array_range_type (string_char_type,
1184 low_bound, high_bound);
1185 TYPE_CODE (result_type) = TYPE_CODE_STRING;
1190 create_set_type (struct type *result_type, struct type *domain_type)
1192 if (result_type == NULL)
1193 result_type = alloc_type_copy (domain_type);
1195 TYPE_CODE (result_type) = TYPE_CODE_SET;
1196 TYPE_NFIELDS (result_type) = 1;
1197 TYPE_FIELDS (result_type)
1198 = (struct field *) TYPE_ZALLOC (result_type, sizeof (struct field));
1200 if (!TYPE_STUB (domain_type))
1202 LONGEST low_bound, high_bound, bit_length;
1204 if (get_discrete_bounds (domain_type, &low_bound, &high_bound) < 0)
1205 low_bound = high_bound = 0;
1206 bit_length = high_bound - low_bound + 1;
1207 TYPE_LENGTH (result_type)
1208 = (bit_length + TARGET_CHAR_BIT - 1) / TARGET_CHAR_BIT;
1210 TYPE_UNSIGNED (result_type) = 1;
1212 TYPE_FIELD_TYPE (result_type, 0) = domain_type;
1217 /* Convert ARRAY_TYPE to a vector type. This may modify ARRAY_TYPE
1218 and any array types nested inside it. */
1221 make_vector_type (struct type *array_type)
1223 struct type *inner_array, *elt_type;
1226 /* Find the innermost array type, in case the array is
1227 multi-dimensional. */
1228 inner_array = array_type;
1229 while (TYPE_CODE (TYPE_TARGET_TYPE (inner_array)) == TYPE_CODE_ARRAY)
1230 inner_array = TYPE_TARGET_TYPE (inner_array);
1232 elt_type = TYPE_TARGET_TYPE (inner_array);
1233 if (TYPE_CODE (elt_type) == TYPE_CODE_INT)
1235 flags = TYPE_INSTANCE_FLAGS (elt_type) | TYPE_INSTANCE_FLAG_NOTTEXT;
1236 elt_type = make_qualified_type (elt_type, flags, NULL);
1237 TYPE_TARGET_TYPE (inner_array) = elt_type;
1240 TYPE_VECTOR (array_type) = 1;
1244 init_vector_type (struct type *elt_type, int n)
1246 struct type *array_type;
1248 array_type = lookup_array_range_type (elt_type, 0, n - 1);
1249 make_vector_type (array_type);
1253 /* Internal routine called by TYPE_SELF_TYPE to return the type that TYPE
1254 belongs to. In c++ this is the class of "this", but TYPE_THIS_TYPE is too
1255 confusing. "self" is a common enough replacement for "this".
1256 TYPE must be one of TYPE_CODE_METHODPTR, TYPE_CODE_MEMBERPTR, or
1257 TYPE_CODE_METHOD. */
1260 internal_type_self_type (struct type *type)
1262 switch (TYPE_CODE (type))
1264 case TYPE_CODE_METHODPTR:
1265 case TYPE_CODE_MEMBERPTR:
1266 if (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_NONE)
1268 gdb_assert (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_SELF_TYPE);
1269 return TYPE_MAIN_TYPE (type)->type_specific.self_type;
1270 case TYPE_CODE_METHOD:
1271 if (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_NONE)
1273 gdb_assert (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_FUNC);
1274 return TYPE_MAIN_TYPE (type)->type_specific.func_stuff->self_type;
1276 gdb_assert_not_reached ("bad type");
1280 /* Set the type of the class that TYPE belongs to.
1281 In c++ this is the class of "this".
1282 TYPE must be one of TYPE_CODE_METHODPTR, TYPE_CODE_MEMBERPTR, or
1283 TYPE_CODE_METHOD. */
1286 set_type_self_type (struct type *type, struct type *self_type)
1288 switch (TYPE_CODE (type))
1290 case TYPE_CODE_METHODPTR:
1291 case TYPE_CODE_MEMBERPTR:
1292 if (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_NONE)
1293 TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_SELF_TYPE;
1294 gdb_assert (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_SELF_TYPE);
1295 TYPE_MAIN_TYPE (type)->type_specific.self_type = self_type;
1297 case TYPE_CODE_METHOD:
1298 if (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_NONE)
1299 INIT_FUNC_SPECIFIC (type);
1300 gdb_assert (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_FUNC);
1301 TYPE_MAIN_TYPE (type)->type_specific.func_stuff->self_type = self_type;
1304 gdb_assert_not_reached ("bad type");
1308 /* Smash TYPE to be a type of pointers to members of SELF_TYPE with type
1309 TO_TYPE. A member pointer is a wierd thing -- it amounts to a
1310 typed offset into a struct, e.g. "an int at offset 8". A MEMBER
1311 TYPE doesn't include the offset (that's the value of the MEMBER
1312 itself), but does include the structure type into which it points
1315 When "smashing" the type, we preserve the objfile that the old type
1316 pointed to, since we aren't changing where the type is actually
1320 smash_to_memberptr_type (struct type *type, struct type *self_type,
1321 struct type *to_type)
1324 TYPE_CODE (type) = TYPE_CODE_MEMBERPTR;
1325 TYPE_TARGET_TYPE (type) = to_type;
1326 set_type_self_type (type, self_type);
1327 /* Assume that a data member pointer is the same size as a normal
1330 = gdbarch_ptr_bit (get_type_arch (to_type)) / TARGET_CHAR_BIT;
1333 /* Smash TYPE to be a type of pointer to methods type TO_TYPE.
1335 When "smashing" the type, we preserve the objfile that the old type
1336 pointed to, since we aren't changing where the type is actually
1340 smash_to_methodptr_type (struct type *type, struct type *to_type)
1343 TYPE_CODE (type) = TYPE_CODE_METHODPTR;
1344 TYPE_TARGET_TYPE (type) = to_type;
1345 set_type_self_type (type, TYPE_SELF_TYPE (to_type));
1346 TYPE_LENGTH (type) = cplus_method_ptr_size (to_type);
1349 /* Smash TYPE to be a type of method of SELF_TYPE with type TO_TYPE.
1350 METHOD just means `function that gets an extra "this" argument'.
1352 When "smashing" the type, we preserve the objfile that the old type
1353 pointed to, since we aren't changing where the type is actually
1357 smash_to_method_type (struct type *type, struct type *self_type,
1358 struct type *to_type, struct field *args,
1359 int nargs, int varargs)
1362 TYPE_CODE (type) = TYPE_CODE_METHOD;
1363 TYPE_TARGET_TYPE (type) = to_type;
1364 set_type_self_type (type, self_type);
1365 TYPE_FIELDS (type) = args;
1366 TYPE_NFIELDS (type) = nargs;
1368 TYPE_VARARGS (type) = 1;
1369 TYPE_LENGTH (type) = 1; /* In practice, this is never needed. */
1372 /* Return a typename for a struct/union/enum type without "struct ",
1373 "union ", or "enum ". If the type has a NULL name, return NULL. */
1376 type_name_no_tag (const struct type *type)
1378 if (TYPE_TAG_NAME (type) != NULL)
1379 return TYPE_TAG_NAME (type);
1381 /* Is there code which expects this to return the name if there is
1382 no tag name? My guess is that this is mainly used for C++ in
1383 cases where the two will always be the same. */
1384 return TYPE_NAME (type);
1387 /* A wrapper of type_name_no_tag which calls error if the type is anonymous.
1388 Since GCC PR debug/47510 DWARF provides associated information to detect the
1389 anonymous class linkage name from its typedef.
1391 Parameter TYPE should not yet have CHECK_TYPEDEF applied, this function will
1395 type_name_no_tag_or_error (struct type *type)
1397 struct type *saved_type = type;
1399 struct objfile *objfile;
1401 type = check_typedef (type);
1403 name = type_name_no_tag (type);
1407 name = type_name_no_tag (saved_type);
1408 objfile = TYPE_OBJFILE (saved_type);
1409 error (_("Invalid anonymous type %s [in module %s], GCC PR debug/47510 bug?"),
1410 name ? name : "<anonymous>",
1411 objfile ? objfile_name (objfile) : "<arch>");
1414 /* Lookup a typedef or primitive type named NAME, visible in lexical
1415 block BLOCK. If NOERR is nonzero, return zero if NAME is not
1416 suitably defined. */
1419 lookup_typename (const struct language_defn *language,
1420 struct gdbarch *gdbarch, const char *name,
1421 const struct block *block, int noerr)
1425 sym = lookup_symbol_in_language (name, block, VAR_DOMAIN,
1426 language->la_language, NULL).symbol;
1427 if (sym != NULL && SYMBOL_CLASS (sym) == LOC_TYPEDEF)
1428 return SYMBOL_TYPE (sym);
1432 error (_("No type named %s."), name);
1436 lookup_unsigned_typename (const struct language_defn *language,
1437 struct gdbarch *gdbarch, const char *name)
1439 char *uns = (char *) alloca (strlen (name) + 10);
1441 strcpy (uns, "unsigned ");
1442 strcpy (uns + 9, name);
1443 return lookup_typename (language, gdbarch, uns, (struct block *) NULL, 0);
1447 lookup_signed_typename (const struct language_defn *language,
1448 struct gdbarch *gdbarch, const char *name)
1451 char *uns = (char *) alloca (strlen (name) + 8);
1453 strcpy (uns, "signed ");
1454 strcpy (uns + 7, name);
1455 t = lookup_typename (language, gdbarch, uns, (struct block *) NULL, 1);
1456 /* If we don't find "signed FOO" just try again with plain "FOO". */
1459 return lookup_typename (language, gdbarch, name, (struct block *) NULL, 0);
1462 /* Lookup a structure type named "struct NAME",
1463 visible in lexical block BLOCK. */
1466 lookup_struct (const char *name, const struct block *block)
1470 sym = lookup_symbol (name, block, STRUCT_DOMAIN, 0).symbol;
1474 error (_("No struct type named %s."), name);
1476 if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_STRUCT)
1478 error (_("This context has class, union or enum %s, not a struct."),
1481 return (SYMBOL_TYPE (sym));
1484 /* Lookup a union type named "union NAME",
1485 visible in lexical block BLOCK. */
1488 lookup_union (const char *name, const struct block *block)
1493 sym = lookup_symbol (name, block, STRUCT_DOMAIN, 0).symbol;
1496 error (_("No union type named %s."), name);
1498 t = SYMBOL_TYPE (sym);
1500 if (TYPE_CODE (t) == TYPE_CODE_UNION)
1503 /* If we get here, it's not a union. */
1504 error (_("This context has class, struct or enum %s, not a union."),
1508 /* Lookup an enum type named "enum NAME",
1509 visible in lexical block BLOCK. */
1512 lookup_enum (const char *name, const struct block *block)
1516 sym = lookup_symbol (name, block, STRUCT_DOMAIN, 0).symbol;
1519 error (_("No enum type named %s."), name);
1521 if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_ENUM)
1523 error (_("This context has class, struct or union %s, not an enum."),
1526 return (SYMBOL_TYPE (sym));
1529 /* Lookup a template type named "template NAME<TYPE>",
1530 visible in lexical block BLOCK. */
1533 lookup_template_type (char *name, struct type *type,
1534 const struct block *block)
1537 char *nam = (char *)
1538 alloca (strlen (name) + strlen (TYPE_NAME (type)) + 4);
1542 strcat (nam, TYPE_NAME (type));
1543 strcat (nam, " >"); /* FIXME, extra space still introduced in gcc? */
1545 sym = lookup_symbol (nam, block, VAR_DOMAIN, 0).symbol;
1549 error (_("No template type named %s."), name);
1551 if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_STRUCT)
1553 error (_("This context has class, union or enum %s, not a struct."),
1556 return (SYMBOL_TYPE (sym));
1559 /* Given a type TYPE, lookup the type of the component of type named
1562 TYPE can be either a struct or union, or a pointer or reference to
1563 a struct or union. If it is a pointer or reference, its target
1564 type is automatically used. Thus '.' and '->' are interchangable,
1565 as specified for the definitions of the expression element types
1566 STRUCTOP_STRUCT and STRUCTOP_PTR.
1568 If NOERR is nonzero, return zero if NAME is not suitably defined.
1569 If NAME is the name of a baseclass type, return that type. */
1572 lookup_struct_elt_type (struct type *type, const char *name, int noerr)
1579 type = check_typedef (type);
1580 if (TYPE_CODE (type) != TYPE_CODE_PTR
1581 && TYPE_CODE (type) != TYPE_CODE_REF)
1583 type = TYPE_TARGET_TYPE (type);
1586 if (TYPE_CODE (type) != TYPE_CODE_STRUCT
1587 && TYPE_CODE (type) != TYPE_CODE_UNION)
1589 type_name = type_to_string (type);
1590 make_cleanup (xfree, type_name);
1591 error (_("Type %s is not a structure or union type."), type_name);
1595 /* FIXME: This change put in by Michael seems incorrect for the case
1596 where the structure tag name is the same as the member name.
1597 I.e. when doing "ptype bell->bar" for "struct foo { int bar; int
1598 foo; } bell;" Disabled by fnf. */
1602 type_name = type_name_no_tag (type);
1603 if (type_name != NULL && strcmp (type_name, name) == 0)
1608 for (i = TYPE_NFIELDS (type) - 1; i >= TYPE_N_BASECLASSES (type); i--)
1610 const char *t_field_name = TYPE_FIELD_NAME (type, i);
1612 if (t_field_name && (strcmp_iw (t_field_name, name) == 0))
1614 return TYPE_FIELD_TYPE (type, i);
1616 else if (!t_field_name || *t_field_name == '\0')
1618 struct type *subtype
1619 = lookup_struct_elt_type (TYPE_FIELD_TYPE (type, i), name, 1);
1621 if (subtype != NULL)
1626 /* OK, it's not in this class. Recursively check the baseclasses. */
1627 for (i = TYPE_N_BASECLASSES (type) - 1; i >= 0; i--)
1631 t = lookup_struct_elt_type (TYPE_BASECLASS (type, i), name, 1);
1643 type_name = type_to_string (type);
1644 make_cleanup (xfree, type_name);
1645 error (_("Type %s has no component named %s."), type_name, name);
1648 /* Store in *MAX the largest number representable by unsigned integer type
1652 get_unsigned_type_max (struct type *type, ULONGEST *max)
1656 type = check_typedef (type);
1657 gdb_assert (TYPE_CODE (type) == TYPE_CODE_INT && TYPE_UNSIGNED (type));
1658 gdb_assert (TYPE_LENGTH (type) <= sizeof (ULONGEST));
1660 /* Written this way to avoid overflow. */
1661 n = TYPE_LENGTH (type) * TARGET_CHAR_BIT;
1662 *max = ((((ULONGEST) 1 << (n - 1)) - 1) << 1) | 1;
1665 /* Store in *MIN, *MAX the smallest and largest numbers representable by
1666 signed integer type TYPE. */
1669 get_signed_type_minmax (struct type *type, LONGEST *min, LONGEST *max)
1673 type = check_typedef (type);
1674 gdb_assert (TYPE_CODE (type) == TYPE_CODE_INT && !TYPE_UNSIGNED (type));
1675 gdb_assert (TYPE_LENGTH (type) <= sizeof (LONGEST));
1677 n = TYPE_LENGTH (type) * TARGET_CHAR_BIT;
1678 *min = -((ULONGEST) 1 << (n - 1));
1679 *max = ((ULONGEST) 1 << (n - 1)) - 1;
1682 /* Internal routine called by TYPE_VPTR_FIELDNO to return the value of
1683 cplus_stuff.vptr_fieldno.
1685 cplus_stuff is initialized to cplus_struct_default which does not
1686 set vptr_fieldno to -1 for portability reasons (IWBN to use C99
1687 designated initializers). We cope with that here. */
1690 internal_type_vptr_fieldno (struct type *type)
1692 type = check_typedef (type);
1693 gdb_assert (TYPE_CODE (type) == TYPE_CODE_STRUCT
1694 || TYPE_CODE (type) == TYPE_CODE_UNION);
1695 if (!HAVE_CPLUS_STRUCT (type))
1697 return TYPE_RAW_CPLUS_SPECIFIC (type)->vptr_fieldno;
1700 /* Set the value of cplus_stuff.vptr_fieldno. */
1703 set_type_vptr_fieldno (struct type *type, int fieldno)
1705 type = check_typedef (type);
1706 gdb_assert (TYPE_CODE (type) == TYPE_CODE_STRUCT
1707 || TYPE_CODE (type) == TYPE_CODE_UNION);
1708 if (!HAVE_CPLUS_STRUCT (type))
1709 ALLOCATE_CPLUS_STRUCT_TYPE (type);
1710 TYPE_RAW_CPLUS_SPECIFIC (type)->vptr_fieldno = fieldno;
1713 /* Internal routine called by TYPE_VPTR_BASETYPE to return the value of
1714 cplus_stuff.vptr_basetype. */
1717 internal_type_vptr_basetype (struct type *type)
1719 type = check_typedef (type);
1720 gdb_assert (TYPE_CODE (type) == TYPE_CODE_STRUCT
1721 || TYPE_CODE (type) == TYPE_CODE_UNION);
1722 gdb_assert (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_CPLUS_STUFF);
1723 return TYPE_RAW_CPLUS_SPECIFIC (type)->vptr_basetype;
1726 /* Set the value of cplus_stuff.vptr_basetype. */
1729 set_type_vptr_basetype (struct type *type, struct type *basetype)
1731 type = check_typedef (type);
1732 gdb_assert (TYPE_CODE (type) == TYPE_CODE_STRUCT
1733 || TYPE_CODE (type) == TYPE_CODE_UNION);
1734 if (!HAVE_CPLUS_STRUCT (type))
1735 ALLOCATE_CPLUS_STRUCT_TYPE (type);
1736 TYPE_RAW_CPLUS_SPECIFIC (type)->vptr_basetype = basetype;
1739 /* Lookup the vptr basetype/fieldno values for TYPE.
1740 If found store vptr_basetype in *BASETYPEP if non-NULL, and return
1741 vptr_fieldno. Also, if found and basetype is from the same objfile,
1743 If not found, return -1 and ignore BASETYPEP.
1744 Callers should be aware that in some cases (for example,
1745 the type or one of its baseclasses is a stub type and we are
1746 debugging a .o file, or the compiler uses DWARF-2 and is not GCC),
1747 this function will not be able to find the
1748 virtual function table pointer, and vptr_fieldno will remain -1 and
1749 vptr_basetype will remain NULL or incomplete. */
1752 get_vptr_fieldno (struct type *type, struct type **basetypep)
1754 type = check_typedef (type);
1756 if (TYPE_VPTR_FIELDNO (type) < 0)
1760 /* We must start at zero in case the first (and only) baseclass
1761 is virtual (and hence we cannot share the table pointer). */
1762 for (i = 0; i < TYPE_N_BASECLASSES (type); i++)
1764 struct type *baseclass = check_typedef (TYPE_BASECLASS (type, i));
1766 struct type *basetype;
1768 fieldno = get_vptr_fieldno (baseclass, &basetype);
1771 /* If the type comes from a different objfile we can't cache
1772 it, it may have a different lifetime. PR 2384 */
1773 if (TYPE_OBJFILE (type) == TYPE_OBJFILE (basetype))
1775 set_type_vptr_fieldno (type, fieldno);
1776 set_type_vptr_basetype (type, basetype);
1779 *basetypep = basetype;
1790 *basetypep = TYPE_VPTR_BASETYPE (type);
1791 return TYPE_VPTR_FIELDNO (type);
1796 stub_noname_complaint (void)
1798 complaint (&symfile_complaints, _("stub type has NULL name"));
1801 /* Worker for is_dynamic_type. */
1804 is_dynamic_type_internal (struct type *type, int top_level)
1806 type = check_typedef (type);
1808 /* We only want to recognize references at the outermost level. */
1809 if (top_level && TYPE_CODE (type) == TYPE_CODE_REF)
1810 type = check_typedef (TYPE_TARGET_TYPE (type));
1812 /* Types that have a dynamic TYPE_DATA_LOCATION are considered
1813 dynamic, even if the type itself is statically defined.
1814 From a user's point of view, this may appear counter-intuitive;
1815 but it makes sense in this context, because the point is to determine
1816 whether any part of the type needs to be resolved before it can
1818 if (TYPE_DATA_LOCATION (type) != NULL
1819 && (TYPE_DATA_LOCATION_KIND (type) == PROP_LOCEXPR
1820 || TYPE_DATA_LOCATION_KIND (type) == PROP_LOCLIST))
1823 if (TYPE_ASSOCIATED_PROP (type))
1826 if (TYPE_ALLOCATED_PROP (type))
1829 switch (TYPE_CODE (type))
1831 case TYPE_CODE_RANGE:
1833 /* A range type is obviously dynamic if it has at least one
1834 dynamic bound. But also consider the range type to be
1835 dynamic when its subtype is dynamic, even if the bounds
1836 of the range type are static. It allows us to assume that
1837 the subtype of a static range type is also static. */
1838 return (!has_static_range (TYPE_RANGE_DATA (type))
1839 || is_dynamic_type_internal (TYPE_TARGET_TYPE (type), 0));
1842 case TYPE_CODE_ARRAY:
1844 gdb_assert (TYPE_NFIELDS (type) == 1);
1846 /* The array is dynamic if either the bounds are dynamic,
1847 or the elements it contains have a dynamic contents. */
1848 if (is_dynamic_type_internal (TYPE_INDEX_TYPE (type), 0))
1850 return is_dynamic_type_internal (TYPE_TARGET_TYPE (type), 0);
1853 case TYPE_CODE_STRUCT:
1854 case TYPE_CODE_UNION:
1858 for (i = 0; i < TYPE_NFIELDS (type); ++i)
1859 if (!field_is_static (&TYPE_FIELD (type, i))
1860 && is_dynamic_type_internal (TYPE_FIELD_TYPE (type, i), 0))
1869 /* See gdbtypes.h. */
1872 is_dynamic_type (struct type *type)
1874 return is_dynamic_type_internal (type, 1);
1877 static struct type *resolve_dynamic_type_internal
1878 (struct type *type, struct property_addr_info *addr_stack, int top_level);
1880 /* Given a dynamic range type (dyn_range_type) and a stack of
1881 struct property_addr_info elements, return a static version
1884 static struct type *
1885 resolve_dynamic_range (struct type *dyn_range_type,
1886 struct property_addr_info *addr_stack)
1889 struct type *static_range_type, *static_target_type;
1890 const struct dynamic_prop *prop;
1891 struct dynamic_prop low_bound, high_bound;
1893 gdb_assert (TYPE_CODE (dyn_range_type) == TYPE_CODE_RANGE);
1895 prop = &TYPE_RANGE_DATA (dyn_range_type)->low;
1896 if (dwarf2_evaluate_property (prop, NULL, addr_stack, &value))
1898 low_bound.kind = PROP_CONST;
1899 low_bound.data.const_val = value;
1903 low_bound.kind = PROP_UNDEFINED;
1904 low_bound.data.const_val = 0;
1907 prop = &TYPE_RANGE_DATA (dyn_range_type)->high;
1908 if (dwarf2_evaluate_property (prop, NULL, addr_stack, &value))
1910 high_bound.kind = PROP_CONST;
1911 high_bound.data.const_val = value;
1913 if (TYPE_RANGE_DATA (dyn_range_type)->flag_upper_bound_is_count)
1914 high_bound.data.const_val
1915 = low_bound.data.const_val + high_bound.data.const_val - 1;
1919 high_bound.kind = PROP_UNDEFINED;
1920 high_bound.data.const_val = 0;
1924 = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (dyn_range_type),
1926 static_range_type = create_range_type (copy_type (dyn_range_type),
1928 &low_bound, &high_bound);
1929 TYPE_RANGE_DATA (static_range_type)->flag_bound_evaluated = 1;
1930 return static_range_type;
1933 /* Resolves dynamic bound values of an array type TYPE to static ones.
1934 ADDR_STACK is a stack of struct property_addr_info to be used
1935 if needed during the dynamic resolution. */
1937 static struct type *
1938 resolve_dynamic_array (struct type *type,
1939 struct property_addr_info *addr_stack)
1942 struct type *elt_type;
1943 struct type *range_type;
1944 struct type *ary_dim;
1945 struct dynamic_prop *prop;
1947 gdb_assert (TYPE_CODE (type) == TYPE_CODE_ARRAY);
1949 type = copy_type (type);
1952 range_type = check_typedef (TYPE_INDEX_TYPE (elt_type));
1953 range_type = resolve_dynamic_range (range_type, addr_stack);
1955 /* Resolve allocated/associated here before creating a new array type, which
1956 will update the length of the array accordingly. */
1957 prop = TYPE_ALLOCATED_PROP (type);
1958 if (prop != NULL && dwarf2_evaluate_property (prop, NULL, addr_stack, &value))
1960 TYPE_DYN_PROP_ADDR (prop) = value;
1961 TYPE_DYN_PROP_KIND (prop) = PROP_CONST;
1963 prop = TYPE_ASSOCIATED_PROP (type);
1964 if (prop != NULL && dwarf2_evaluate_property (prop, NULL, addr_stack, &value))
1966 TYPE_DYN_PROP_ADDR (prop) = value;
1967 TYPE_DYN_PROP_KIND (prop) = PROP_CONST;
1970 ary_dim = check_typedef (TYPE_TARGET_TYPE (elt_type));
1972 if (ary_dim != NULL && TYPE_CODE (ary_dim) == TYPE_CODE_ARRAY)
1973 elt_type = resolve_dynamic_array (ary_dim, addr_stack);
1975 elt_type = TYPE_TARGET_TYPE (type);
1977 return create_array_type_with_stride (type, elt_type, range_type,
1978 TYPE_FIELD_BITSIZE (type, 0));
1981 /* Resolve dynamic bounds of members of the union TYPE to static
1982 bounds. ADDR_STACK is a stack of struct property_addr_info
1983 to be used if needed during the dynamic resolution. */
1985 static struct type *
1986 resolve_dynamic_union (struct type *type,
1987 struct property_addr_info *addr_stack)
1989 struct type *resolved_type;
1991 unsigned int max_len = 0;
1993 gdb_assert (TYPE_CODE (type) == TYPE_CODE_UNION);
1995 resolved_type = copy_type (type);
1996 TYPE_FIELDS (resolved_type)
1997 = (struct field *) TYPE_ALLOC (resolved_type,
1998 TYPE_NFIELDS (resolved_type)
1999 * sizeof (struct field));
2000 memcpy (TYPE_FIELDS (resolved_type),
2002 TYPE_NFIELDS (resolved_type) * sizeof (struct field));
2003 for (i = 0; i < TYPE_NFIELDS (resolved_type); ++i)
2007 if (field_is_static (&TYPE_FIELD (type, i)))
2010 t = resolve_dynamic_type_internal (TYPE_FIELD_TYPE (resolved_type, i),
2012 TYPE_FIELD_TYPE (resolved_type, i) = t;
2013 if (TYPE_LENGTH (t) > max_len)
2014 max_len = TYPE_LENGTH (t);
2017 TYPE_LENGTH (resolved_type) = max_len;
2018 return resolved_type;
2021 /* Resolve dynamic bounds of members of the struct TYPE to static
2022 bounds. ADDR_STACK is a stack of struct property_addr_info to
2023 be used if needed during the dynamic resolution. */
2025 static struct type *
2026 resolve_dynamic_struct (struct type *type,
2027 struct property_addr_info *addr_stack)
2029 struct type *resolved_type;
2031 unsigned resolved_type_bit_length = 0;
2033 gdb_assert (TYPE_CODE (type) == TYPE_CODE_STRUCT);
2034 gdb_assert (TYPE_NFIELDS (type) > 0);
2036 resolved_type = copy_type (type);
2037 TYPE_FIELDS (resolved_type)
2038 = (struct field *) TYPE_ALLOC (resolved_type,
2039 TYPE_NFIELDS (resolved_type)
2040 * sizeof (struct field));
2041 memcpy (TYPE_FIELDS (resolved_type),
2043 TYPE_NFIELDS (resolved_type) * sizeof (struct field));
2044 for (i = 0; i < TYPE_NFIELDS (resolved_type); ++i)
2046 unsigned new_bit_length;
2047 struct property_addr_info pinfo;
2049 if (field_is_static (&TYPE_FIELD (type, i)))
2052 /* As we know this field is not a static field, the field's
2053 field_loc_kind should be FIELD_LOC_KIND_BITPOS. Verify
2054 this is the case, but only trigger a simple error rather
2055 than an internal error if that fails. While failing
2056 that verification indicates a bug in our code, the error
2057 is not severe enough to suggest to the user he stops
2058 his debugging session because of it. */
2059 if (TYPE_FIELD_LOC_KIND (type, i) != FIELD_LOC_KIND_BITPOS)
2060 error (_("Cannot determine struct field location"
2061 " (invalid location kind)"));
2063 pinfo.type = check_typedef (TYPE_FIELD_TYPE (type, i));
2064 pinfo.valaddr = addr_stack->valaddr;
2067 + (TYPE_FIELD_BITPOS (resolved_type, i) / TARGET_CHAR_BIT));
2068 pinfo.next = addr_stack;
2070 TYPE_FIELD_TYPE (resolved_type, i)
2071 = resolve_dynamic_type_internal (TYPE_FIELD_TYPE (resolved_type, i),
2073 gdb_assert (TYPE_FIELD_LOC_KIND (resolved_type, i)
2074 == FIELD_LOC_KIND_BITPOS);
2076 new_bit_length = TYPE_FIELD_BITPOS (resolved_type, i);
2077 if (TYPE_FIELD_BITSIZE (resolved_type, i) != 0)
2078 new_bit_length += TYPE_FIELD_BITSIZE (resolved_type, i);
2080 new_bit_length += (TYPE_LENGTH (TYPE_FIELD_TYPE (resolved_type, i))
2083 /* Normally, we would use the position and size of the last field
2084 to determine the size of the enclosing structure. But GCC seems
2085 to be encoding the position of some fields incorrectly when
2086 the struct contains a dynamic field that is not placed last.
2087 So we compute the struct size based on the field that has
2088 the highest position + size - probably the best we can do. */
2089 if (new_bit_length > resolved_type_bit_length)
2090 resolved_type_bit_length = new_bit_length;
2093 /* The length of a type won't change for fortran, but it does for C and Ada.
2094 For fortran the size of dynamic fields might change over time but not the
2095 type length of the structure. If we adapt it, we run into problems
2096 when calculating the element offset for arrays of structs. */
2097 if (current_language->la_language != language_fortran)
2098 TYPE_LENGTH (resolved_type)
2099 = (resolved_type_bit_length + TARGET_CHAR_BIT - 1) / TARGET_CHAR_BIT;
2101 /* The Ada language uses this field as a cache for static fixed types: reset
2102 it as RESOLVED_TYPE must have its own static fixed type. */
2103 TYPE_TARGET_TYPE (resolved_type) = NULL;
2105 return resolved_type;
2108 /* Worker for resolved_dynamic_type. */
2110 static struct type *
2111 resolve_dynamic_type_internal (struct type *type,
2112 struct property_addr_info *addr_stack,
2115 struct type *real_type = check_typedef (type);
2116 struct type *resolved_type = type;
2117 struct dynamic_prop *prop;
2120 if (!is_dynamic_type_internal (real_type, top_level))
2123 if (TYPE_CODE (type) == TYPE_CODE_TYPEDEF)
2125 resolved_type = copy_type (type);
2126 TYPE_TARGET_TYPE (resolved_type)
2127 = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (type), addr_stack,
2132 /* Before trying to resolve TYPE, make sure it is not a stub. */
2135 switch (TYPE_CODE (type))
2139 struct property_addr_info pinfo;
2141 pinfo.type = check_typedef (TYPE_TARGET_TYPE (type));
2142 pinfo.valaddr = NULL;
2143 if (addr_stack->valaddr != NULL)
2144 pinfo.addr = extract_typed_address (addr_stack->valaddr, type);
2146 pinfo.addr = read_memory_typed_address (addr_stack->addr, type);
2147 pinfo.next = addr_stack;
2149 resolved_type = copy_type (type);
2150 TYPE_TARGET_TYPE (resolved_type)
2151 = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (type),
2156 case TYPE_CODE_ARRAY:
2157 resolved_type = resolve_dynamic_array (type, addr_stack);
2160 case TYPE_CODE_RANGE:
2161 resolved_type = resolve_dynamic_range (type, addr_stack);
2164 case TYPE_CODE_UNION:
2165 resolved_type = resolve_dynamic_union (type, addr_stack);
2168 case TYPE_CODE_STRUCT:
2169 resolved_type = resolve_dynamic_struct (type, addr_stack);
2174 /* Resolve data_location attribute. */
2175 prop = TYPE_DATA_LOCATION (resolved_type);
2177 && dwarf2_evaluate_property (prop, NULL, addr_stack, &value))
2179 TYPE_DYN_PROP_ADDR (prop) = value;
2180 TYPE_DYN_PROP_KIND (prop) = PROP_CONST;
2183 return resolved_type;
2186 /* See gdbtypes.h */
2189 resolve_dynamic_type (struct type *type, const gdb_byte *valaddr,
2192 struct property_addr_info pinfo
2193 = {check_typedef (type), valaddr, addr, NULL};
2195 return resolve_dynamic_type_internal (type, &pinfo, 1);
2198 /* See gdbtypes.h */
2200 struct dynamic_prop *
2201 get_dyn_prop (enum dynamic_prop_node_kind prop_kind, const struct type *type)
2203 struct dynamic_prop_list *node = TYPE_DYN_PROP_LIST (type);
2205 while (node != NULL)
2207 if (node->prop_kind == prop_kind)
2214 /* See gdbtypes.h */
2217 add_dyn_prop (enum dynamic_prop_node_kind prop_kind, struct dynamic_prop prop,
2218 struct type *type, struct objfile *objfile)
2220 struct dynamic_prop_list *temp;
2222 gdb_assert (TYPE_OBJFILE_OWNED (type));
2224 temp = XOBNEW (&objfile->objfile_obstack, struct dynamic_prop_list);
2225 temp->prop_kind = prop_kind;
2227 temp->next = TYPE_DYN_PROP_LIST (type);
2229 TYPE_DYN_PROP_LIST (type) = temp;
2232 /* Remove dynamic property from TYPE in case it exists. */
2235 remove_dyn_prop (enum dynamic_prop_node_kind prop_kind,
2238 struct dynamic_prop_list *prev_node, *curr_node;
2240 curr_node = TYPE_DYN_PROP_LIST (type);
2243 while (NULL != curr_node)
2245 if (curr_node->prop_kind == prop_kind)
2247 /* Update the linked list but don't free anything.
2248 The property was allocated on objstack and it is not known
2249 if we are on top of it. Nevertheless, everything is released
2250 when the complete objstack is freed. */
2251 if (NULL == prev_node)
2252 TYPE_DYN_PROP_LIST (type) = curr_node->next;
2254 prev_node->next = curr_node->next;
2259 prev_node = curr_node;
2260 curr_node = curr_node->next;
2264 /* Find the real type of TYPE. This function returns the real type,
2265 after removing all layers of typedefs, and completing opaque or stub
2266 types. Completion changes the TYPE argument, but stripping of
2269 Instance flags (e.g. const/volatile) are preserved as typedefs are
2270 stripped. If necessary a new qualified form of the underlying type
2273 NOTE: This will return a typedef if TYPE_TARGET_TYPE for the typedef has
2274 not been computed and we're either in the middle of reading symbols, or
2275 there was no name for the typedef in the debug info.
2277 NOTE: Lookup of opaque types can throw errors for invalid symbol files.
2278 QUITs in the symbol reading code can also throw.
2279 Thus this function can throw an exception.
2281 If TYPE is a TYPE_CODE_TYPEDEF, its length is updated to the length of
2284 If this is a stubbed struct (i.e. declared as struct foo *), see if
2285 we can find a full definition in some other file. If so, copy this
2286 definition, so we can use it in future. There used to be a comment
2287 (but not any code) that if we don't find a full definition, we'd
2288 set a flag so we don't spend time in the future checking the same
2289 type. That would be a mistake, though--we might load in more
2290 symbols which contain a full definition for the type. */
2293 check_typedef (struct type *type)
2295 struct type *orig_type = type;
2296 /* While we're removing typedefs, we don't want to lose qualifiers.
2297 E.g., const/volatile. */
2298 int instance_flags = TYPE_INSTANCE_FLAGS (type);
2302 while (TYPE_CODE (type) == TYPE_CODE_TYPEDEF)
2304 if (!TYPE_TARGET_TYPE (type))
2309 /* It is dangerous to call lookup_symbol if we are currently
2310 reading a symtab. Infinite recursion is one danger. */
2311 if (currently_reading_symtab)
2312 return make_qualified_type (type, instance_flags, NULL);
2314 name = type_name_no_tag (type);
2315 /* FIXME: shouldn't we separately check the TYPE_NAME and
2316 the TYPE_TAG_NAME, and look in STRUCT_DOMAIN and/or
2317 VAR_DOMAIN as appropriate? (this code was written before
2318 TYPE_NAME and TYPE_TAG_NAME were separate). */
2321 stub_noname_complaint ();
2322 return make_qualified_type (type, instance_flags, NULL);
2324 sym = lookup_symbol (name, 0, STRUCT_DOMAIN, 0).symbol;
2326 TYPE_TARGET_TYPE (type) = SYMBOL_TYPE (sym);
2327 else /* TYPE_CODE_UNDEF */
2328 TYPE_TARGET_TYPE (type) = alloc_type_arch (get_type_arch (type));
2330 type = TYPE_TARGET_TYPE (type);
2332 /* Preserve the instance flags as we traverse down the typedef chain.
2334 Handling address spaces/classes is nasty, what do we do if there's a
2336 E.g., what if an outer typedef marks the type as class_1 and an inner
2337 typedef marks the type as class_2?
2338 This is the wrong place to do such error checking. We leave it to
2339 the code that created the typedef in the first place to flag the
2340 error. We just pick the outer address space (akin to letting the
2341 outer cast in a chain of casting win), instead of assuming
2342 "it can't happen". */
2344 const int ALL_SPACES = (TYPE_INSTANCE_FLAG_CODE_SPACE
2345 | TYPE_INSTANCE_FLAG_DATA_SPACE);
2346 const int ALL_CLASSES = TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL;
2347 int new_instance_flags = TYPE_INSTANCE_FLAGS (type);
2349 /* Treat code vs data spaces and address classes separately. */
2350 if ((instance_flags & ALL_SPACES) != 0)
2351 new_instance_flags &= ~ALL_SPACES;
2352 if ((instance_flags & ALL_CLASSES) != 0)
2353 new_instance_flags &= ~ALL_CLASSES;
2355 instance_flags |= new_instance_flags;
2359 /* If this is a struct/class/union with no fields, then check
2360 whether a full definition exists somewhere else. This is for
2361 systems where a type definition with no fields is issued for such
2362 types, instead of identifying them as stub types in the first
2365 if (TYPE_IS_OPAQUE (type)
2366 && opaque_type_resolution
2367 && !currently_reading_symtab)
2369 const char *name = type_name_no_tag (type);
2370 struct type *newtype;
2374 stub_noname_complaint ();
2375 return make_qualified_type (type, instance_flags, NULL);
2377 newtype = lookup_transparent_type (name);
2381 /* If the resolved type and the stub are in the same
2382 objfile, then replace the stub type with the real deal.
2383 But if they're in separate objfiles, leave the stub
2384 alone; we'll just look up the transparent type every time
2385 we call check_typedef. We can't create pointers between
2386 types allocated to different objfiles, since they may
2387 have different lifetimes. Trying to copy NEWTYPE over to
2388 TYPE's objfile is pointless, too, since you'll have to
2389 move over any other types NEWTYPE refers to, which could
2390 be an unbounded amount of stuff. */
2391 if (TYPE_OBJFILE (newtype) == TYPE_OBJFILE (type))
2392 type = make_qualified_type (newtype,
2393 TYPE_INSTANCE_FLAGS (type),
2399 /* Otherwise, rely on the stub flag being set for opaque/stubbed
2401 else if (TYPE_STUB (type) && !currently_reading_symtab)
2403 const char *name = type_name_no_tag (type);
2404 /* FIXME: shouldn't we separately check the TYPE_NAME and the
2405 TYPE_TAG_NAME, and look in STRUCT_DOMAIN and/or VAR_DOMAIN
2406 as appropriate? (this code was written before TYPE_NAME and
2407 TYPE_TAG_NAME were separate). */
2412 stub_noname_complaint ();
2413 return make_qualified_type (type, instance_flags, NULL);
2415 sym = lookup_symbol (name, 0, STRUCT_DOMAIN, 0).symbol;
2418 /* Same as above for opaque types, we can replace the stub
2419 with the complete type only if they are in the same
2421 if (TYPE_OBJFILE (SYMBOL_TYPE(sym)) == TYPE_OBJFILE (type))
2422 type = make_qualified_type (SYMBOL_TYPE (sym),
2423 TYPE_INSTANCE_FLAGS (type),
2426 type = SYMBOL_TYPE (sym);
2430 if (TYPE_TARGET_STUB (type))
2432 struct type *target_type = check_typedef (TYPE_TARGET_TYPE (type));
2434 if (TYPE_STUB (target_type) || TYPE_TARGET_STUB (target_type))
2436 /* Nothing we can do. */
2438 else if (TYPE_CODE (type) == TYPE_CODE_RANGE)
2440 TYPE_LENGTH (type) = TYPE_LENGTH (target_type);
2441 TYPE_TARGET_STUB (type) = 0;
2445 type = make_qualified_type (type, instance_flags, NULL);
2447 /* Cache TYPE_LENGTH for future use. */
2448 TYPE_LENGTH (orig_type) = TYPE_LENGTH (type);
2453 /* Parse a type expression in the string [P..P+LENGTH). If an error
2454 occurs, silently return a void type. */
2456 static struct type *
2457 safe_parse_type (struct gdbarch *gdbarch, char *p, int length)
2459 struct ui_file *saved_gdb_stderr;
2460 struct type *type = NULL; /* Initialize to keep gcc happy. */
2462 /* Suppress error messages. */
2463 saved_gdb_stderr = gdb_stderr;
2464 gdb_stderr = ui_file_new ();
2466 /* Call parse_and_eval_type() without fear of longjmp()s. */
2469 type = parse_and_eval_type (p, length);
2471 CATCH (except, RETURN_MASK_ERROR)
2473 type = builtin_type (gdbarch)->builtin_void;
2477 /* Stop suppressing error messages. */
2478 ui_file_delete (gdb_stderr);
2479 gdb_stderr = saved_gdb_stderr;
2484 /* Ugly hack to convert method stubs into method types.
2486 He ain't kiddin'. This demangles the name of the method into a
2487 string including argument types, parses out each argument type,
2488 generates a string casting a zero to that type, evaluates the
2489 string, and stuffs the resulting type into an argtype vector!!!
2490 Then it knows the type of the whole function (including argument
2491 types for overloading), which info used to be in the stab's but was
2492 removed to hack back the space required for them. */
2495 check_stub_method (struct type *type, int method_id, int signature_id)
2497 struct gdbarch *gdbarch = get_type_arch (type);
2499 char *mangled_name = gdb_mangle_name (type, method_id, signature_id);
2500 char *demangled_name = gdb_demangle (mangled_name,
2501 DMGL_PARAMS | DMGL_ANSI);
2502 char *argtypetext, *p;
2503 int depth = 0, argcount = 1;
2504 struct field *argtypes;
2507 /* Make sure we got back a function string that we can use. */
2509 p = strchr (demangled_name, '(');
2513 if (demangled_name == NULL || p == NULL)
2514 error (_("Internal: Cannot demangle mangled name `%s'."),
2517 /* Now, read in the parameters that define this type. */
2522 if (*p == '(' || *p == '<')
2526 else if (*p == ')' || *p == '>')
2530 else if (*p == ',' && depth == 0)
2538 /* If we read one argument and it was ``void'', don't count it. */
2539 if (startswith (argtypetext, "(void)"))
2542 /* We need one extra slot, for the THIS pointer. */
2544 argtypes = (struct field *)
2545 TYPE_ALLOC (type, (argcount + 1) * sizeof (struct field));
2548 /* Add THIS pointer for non-static methods. */
2549 f = TYPE_FN_FIELDLIST1 (type, method_id);
2550 if (TYPE_FN_FIELD_STATIC_P (f, signature_id))
2554 argtypes[0].type = lookup_pointer_type (type);
2558 if (*p != ')') /* () means no args, skip while. */
2563 if (depth <= 0 && (*p == ',' || *p == ')'))
2565 /* Avoid parsing of ellipsis, they will be handled below.
2566 Also avoid ``void'' as above. */
2567 if (strncmp (argtypetext, "...", p - argtypetext) != 0
2568 && strncmp (argtypetext, "void", p - argtypetext) != 0)
2570 argtypes[argcount].type =
2571 safe_parse_type (gdbarch, argtypetext, p - argtypetext);
2574 argtypetext = p + 1;
2577 if (*p == '(' || *p == '<')
2581 else if (*p == ')' || *p == '>')
2590 TYPE_FN_FIELD_PHYSNAME (f, signature_id) = mangled_name;
2592 /* Now update the old "stub" type into a real type. */
2593 mtype = TYPE_FN_FIELD_TYPE (f, signature_id);
2594 /* MTYPE may currently be a function (TYPE_CODE_FUNC).
2595 We want a method (TYPE_CODE_METHOD). */
2596 smash_to_method_type (mtype, type, TYPE_TARGET_TYPE (mtype),
2597 argtypes, argcount, p[-2] == '.');
2598 TYPE_STUB (mtype) = 0;
2599 TYPE_FN_FIELD_STUB (f, signature_id) = 0;
2601 xfree (demangled_name);
2604 /* This is the external interface to check_stub_method, above. This
2605 function unstubs all of the signatures for TYPE's METHOD_ID method
2606 name. After calling this function TYPE_FN_FIELD_STUB will be
2607 cleared for each signature and TYPE_FN_FIELDLIST_NAME will be
2610 This function unfortunately can not die until stabs do. */
2613 check_stub_method_group (struct type *type, int method_id)
2615 int len = TYPE_FN_FIELDLIST_LENGTH (type, method_id);
2616 struct fn_field *f = TYPE_FN_FIELDLIST1 (type, method_id);
2617 int j, found_stub = 0;
2619 for (j = 0; j < len; j++)
2620 if (TYPE_FN_FIELD_STUB (f, j))
2623 check_stub_method (type, method_id, j);
2626 /* GNU v3 methods with incorrect names were corrected when we read
2627 in type information, because it was cheaper to do it then. The
2628 only GNU v2 methods with incorrect method names are operators and
2629 destructors; destructors were also corrected when we read in type
2632 Therefore the only thing we need to handle here are v2 operator
2634 if (found_stub && !startswith (TYPE_FN_FIELD_PHYSNAME (f, 0), "_Z"))
2637 char dem_opname[256];
2639 ret = cplus_demangle_opname (TYPE_FN_FIELDLIST_NAME (type,
2641 dem_opname, DMGL_ANSI);
2643 ret = cplus_demangle_opname (TYPE_FN_FIELDLIST_NAME (type,
2647 TYPE_FN_FIELDLIST_NAME (type, method_id) = xstrdup (dem_opname);
2651 /* Ensure it is in .rodata (if available) by workarounding GCC PR 44690. */
2652 const struct cplus_struct_type cplus_struct_default = { };
2655 allocate_cplus_struct_type (struct type *type)
2657 if (HAVE_CPLUS_STRUCT (type))
2658 /* Structure was already allocated. Nothing more to do. */
2661 TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_CPLUS_STUFF;
2662 TYPE_RAW_CPLUS_SPECIFIC (type) = (struct cplus_struct_type *)
2663 TYPE_ALLOC (type, sizeof (struct cplus_struct_type));
2664 *(TYPE_RAW_CPLUS_SPECIFIC (type)) = cplus_struct_default;
2665 set_type_vptr_fieldno (type, -1);
2668 const struct gnat_aux_type gnat_aux_default =
2671 /* Set the TYPE's type-specific kind to TYPE_SPECIFIC_GNAT_STUFF,
2672 and allocate the associated gnat-specific data. The gnat-specific
2673 data is also initialized to gnat_aux_default. */
2676 allocate_gnat_aux_type (struct type *type)
2678 TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_GNAT_STUFF;
2679 TYPE_GNAT_SPECIFIC (type) = (struct gnat_aux_type *)
2680 TYPE_ALLOC (type, sizeof (struct gnat_aux_type));
2681 *(TYPE_GNAT_SPECIFIC (type)) = gnat_aux_default;
2684 /* Helper function to initialize a newly allocated type. Set type code
2685 to CODE and initialize the type-specific fields accordingly. */
2688 set_type_code (struct type *type, enum type_code code)
2690 TYPE_CODE (type) = code;
2694 case TYPE_CODE_STRUCT:
2695 case TYPE_CODE_UNION:
2696 case TYPE_CODE_NAMESPACE:
2697 INIT_CPLUS_SPECIFIC (type);
2700 TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_FLOATFORMAT;
2702 case TYPE_CODE_FUNC:
2703 INIT_FUNC_SPECIFIC (type);
2708 /* Helper function to initialize the standard scalar types.
2710 If NAME is non-NULL, then it is used to initialize the type name.
2711 Note that NAME is not copied; it is required to have a lifetime at
2712 least as long as OBJFILE. */
2715 init_type (enum type_code code, int length, int flags,
2716 const char *name, struct objfile *objfile)
2720 type = alloc_type (objfile);
2721 set_type_code (type, code);
2722 TYPE_LENGTH (type) = length;
2724 gdb_assert (!(flags & (TYPE_FLAG_MIN - 1)));
2725 if (flags & TYPE_FLAG_UNSIGNED)
2726 TYPE_UNSIGNED (type) = 1;
2727 if (flags & TYPE_FLAG_NOSIGN)
2728 TYPE_NOSIGN (type) = 1;
2729 if (flags & TYPE_FLAG_STUB)
2730 TYPE_STUB (type) = 1;
2731 if (flags & TYPE_FLAG_TARGET_STUB)
2732 TYPE_TARGET_STUB (type) = 1;
2733 if (flags & TYPE_FLAG_STATIC)
2734 TYPE_STATIC (type) = 1;
2735 if (flags & TYPE_FLAG_PROTOTYPED)
2736 TYPE_PROTOTYPED (type) = 1;
2737 if (flags & TYPE_FLAG_INCOMPLETE)
2738 TYPE_INCOMPLETE (type) = 1;
2739 if (flags & TYPE_FLAG_VARARGS)
2740 TYPE_VARARGS (type) = 1;
2741 if (flags & TYPE_FLAG_VECTOR)
2742 TYPE_VECTOR (type) = 1;
2743 if (flags & TYPE_FLAG_STUB_SUPPORTED)
2744 TYPE_STUB_SUPPORTED (type) = 1;
2745 if (flags & TYPE_FLAG_FIXED_INSTANCE)
2746 TYPE_FIXED_INSTANCE (type) = 1;
2747 if (flags & TYPE_FLAG_GNU_IFUNC)
2748 TYPE_GNU_IFUNC (type) = 1;
2750 TYPE_NAME (type) = name;
2754 if (name && strcmp (name, "char") == 0)
2755 TYPE_NOSIGN (type) = 1;
2760 /* Queries on types. */
2763 can_dereference (struct type *t)
2765 /* FIXME: Should we return true for references as well as
2767 t = check_typedef (t);
2770 && TYPE_CODE (t) == TYPE_CODE_PTR
2771 && TYPE_CODE (TYPE_TARGET_TYPE (t)) != TYPE_CODE_VOID);
2775 is_integral_type (struct type *t)
2777 t = check_typedef (t);
2780 && ((TYPE_CODE (t) == TYPE_CODE_INT)
2781 || (TYPE_CODE (t) == TYPE_CODE_ENUM)
2782 || (TYPE_CODE (t) == TYPE_CODE_FLAGS)
2783 || (TYPE_CODE (t) == TYPE_CODE_CHAR)
2784 || (TYPE_CODE (t) == TYPE_CODE_RANGE)
2785 || (TYPE_CODE (t) == TYPE_CODE_BOOL)));
2788 /* Return true if TYPE is scalar. */
2791 is_scalar_type (struct type *type)
2793 type = check_typedef (type);
2795 switch (TYPE_CODE (type))
2797 case TYPE_CODE_ARRAY:
2798 case TYPE_CODE_STRUCT:
2799 case TYPE_CODE_UNION:
2801 case TYPE_CODE_STRING:
2808 /* Return true if T is scalar, or a composite type which in practice has
2809 the memory layout of a scalar type. E.g., an array or struct with only
2810 one scalar element inside it, or a union with only scalar elements. */
2813 is_scalar_type_recursive (struct type *t)
2815 t = check_typedef (t);
2817 if (is_scalar_type (t))
2819 /* Are we dealing with an array or string of known dimensions? */
2820 else if ((TYPE_CODE (t) == TYPE_CODE_ARRAY
2821 || TYPE_CODE (t) == TYPE_CODE_STRING) && TYPE_NFIELDS (t) == 1
2822 && TYPE_CODE (TYPE_INDEX_TYPE (t)) == TYPE_CODE_RANGE)
2824 LONGEST low_bound, high_bound;
2825 struct type *elt_type = check_typedef (TYPE_TARGET_TYPE (t));
2827 get_discrete_bounds (TYPE_INDEX_TYPE (t), &low_bound, &high_bound);
2829 return high_bound == low_bound && is_scalar_type_recursive (elt_type);
2831 /* Are we dealing with a struct with one element? */
2832 else if (TYPE_CODE (t) == TYPE_CODE_STRUCT && TYPE_NFIELDS (t) == 1)
2833 return is_scalar_type_recursive (TYPE_FIELD_TYPE (t, 0));
2834 else if (TYPE_CODE (t) == TYPE_CODE_UNION)
2836 int i, n = TYPE_NFIELDS (t);
2838 /* If all elements of the union are scalar, then the union is scalar. */
2839 for (i = 0; i < n; i++)
2840 if (!is_scalar_type_recursive (TYPE_FIELD_TYPE (t, i)))
2849 /* Return true is T is a class or a union. False otherwise. */
2852 class_or_union_p (const struct type *t)
2854 return (TYPE_CODE (t) == TYPE_CODE_STRUCT
2855 || TYPE_CODE (t) == TYPE_CODE_UNION);
2858 /* A helper function which returns true if types A and B represent the
2859 "same" class type. This is true if the types have the same main
2860 type, or the same name. */
2863 class_types_same_p (const struct type *a, const struct type *b)
2865 return (TYPE_MAIN_TYPE (a) == TYPE_MAIN_TYPE (b)
2866 || (TYPE_NAME (a) && TYPE_NAME (b)
2867 && !strcmp (TYPE_NAME (a), TYPE_NAME (b))));
2870 /* If BASE is an ancestor of DCLASS return the distance between them.
2871 otherwise return -1;
2875 class B: public A {};
2876 class C: public B {};
2879 distance_to_ancestor (A, A, 0) = 0
2880 distance_to_ancestor (A, B, 0) = 1
2881 distance_to_ancestor (A, C, 0) = 2
2882 distance_to_ancestor (A, D, 0) = 3
2884 If PUBLIC is 1 then only public ancestors are considered,
2885 and the function returns the distance only if BASE is a public ancestor
2889 distance_to_ancestor (A, D, 1) = -1. */
2892 distance_to_ancestor (struct type *base, struct type *dclass, int is_public)
2897 base = check_typedef (base);
2898 dclass = check_typedef (dclass);
2900 if (class_types_same_p (base, dclass))
2903 for (i = 0; i < TYPE_N_BASECLASSES (dclass); i++)
2905 if (is_public && ! BASETYPE_VIA_PUBLIC (dclass, i))
2908 d = distance_to_ancestor (base, TYPE_BASECLASS (dclass, i), is_public);
2916 /* Check whether BASE is an ancestor or base class or DCLASS
2917 Return 1 if so, and 0 if not.
2918 Note: If BASE and DCLASS are of the same type, this function
2919 will return 1. So for some class A, is_ancestor (A, A) will
2923 is_ancestor (struct type *base, struct type *dclass)
2925 return distance_to_ancestor (base, dclass, 0) >= 0;
2928 /* Like is_ancestor, but only returns true when BASE is a public
2929 ancestor of DCLASS. */
2932 is_public_ancestor (struct type *base, struct type *dclass)
2934 return distance_to_ancestor (base, dclass, 1) >= 0;
2937 /* A helper function for is_unique_ancestor. */
2940 is_unique_ancestor_worker (struct type *base, struct type *dclass,
2942 const gdb_byte *valaddr, int embedded_offset,
2943 CORE_ADDR address, struct value *val)
2947 base = check_typedef (base);
2948 dclass = check_typedef (dclass);
2950 for (i = 0; i < TYPE_N_BASECLASSES (dclass) && count < 2; ++i)
2955 iter = check_typedef (TYPE_BASECLASS (dclass, i));
2957 this_offset = baseclass_offset (dclass, i, valaddr, embedded_offset,
2960 if (class_types_same_p (base, iter))
2962 /* If this is the first subclass, set *OFFSET and set count
2963 to 1. Otherwise, if this is at the same offset as
2964 previous instances, do nothing. Otherwise, increment
2968 *offset = this_offset;
2971 else if (this_offset == *offset)
2979 count += is_unique_ancestor_worker (base, iter, offset,
2981 embedded_offset + this_offset,
2988 /* Like is_ancestor, but only returns true if BASE is a unique base
2989 class of the type of VAL. */
2992 is_unique_ancestor (struct type *base, struct value *val)
2996 return is_unique_ancestor_worker (base, value_type (val), &offset,
2997 value_contents_for_printing (val),
2998 value_embedded_offset (val),
2999 value_address (val), val) == 1;
3003 /* Overload resolution. */
3005 /* Return the sum of the rank of A with the rank of B. */
3008 sum_ranks (struct rank a, struct rank b)
3011 c.rank = a.rank + b.rank;
3012 c.subrank = a.subrank + b.subrank;
3016 /* Compare rank A and B and return:
3018 1 if a is better than b
3019 -1 if b is better than a. */
3022 compare_ranks (struct rank a, struct rank b)
3024 if (a.rank == b.rank)
3026 if (a.subrank == b.subrank)
3028 if (a.subrank < b.subrank)
3030 if (a.subrank > b.subrank)
3034 if (a.rank < b.rank)
3037 /* a.rank > b.rank */
3041 /* Functions for overload resolution begin here. */
3043 /* Compare two badness vectors A and B and return the result.
3044 0 => A and B are identical
3045 1 => A and B are incomparable
3046 2 => A is better than B
3047 3 => A is worse than B */
3050 compare_badness (struct badness_vector *a, struct badness_vector *b)
3054 short found_pos = 0; /* any positives in c? */
3055 short found_neg = 0; /* any negatives in c? */
3057 /* differing lengths => incomparable */
3058 if (a->length != b->length)
3061 /* Subtract b from a */
3062 for (i = 0; i < a->length; i++)
3064 tmp = compare_ranks (b->rank[i], a->rank[i]);
3074 return 1; /* incomparable */
3076 return 3; /* A > B */
3082 return 2; /* A < B */
3084 return 0; /* A == B */
3088 /* Rank a function by comparing its parameter types (PARMS, length
3089 NPARMS), to the types of an argument list (ARGS, length NARGS).
3090 Return a pointer to a badness vector. This has NARGS + 1
3093 struct badness_vector *
3094 rank_function (struct type **parms, int nparms,
3095 struct value **args, int nargs)
3098 struct badness_vector *bv = XNEW (struct badness_vector);
3099 int min_len = nparms < nargs ? nparms : nargs;
3101 bv->length = nargs + 1; /* add 1 for the length-match rank. */
3102 bv->rank = XNEWVEC (struct rank, nargs + 1);
3104 /* First compare the lengths of the supplied lists.
3105 If there is a mismatch, set it to a high value. */
3107 /* pai/1997-06-03 FIXME: when we have debug info about default
3108 arguments and ellipsis parameter lists, we should consider those
3109 and rank the length-match more finely. */
3111 LENGTH_MATCH (bv) = (nargs != nparms)
3112 ? LENGTH_MISMATCH_BADNESS
3113 : EXACT_MATCH_BADNESS;
3115 /* Now rank all the parameters of the candidate function. */
3116 for (i = 1; i <= min_len; i++)
3117 bv->rank[i] = rank_one_type (parms[i - 1], value_type (args[i - 1]),
3120 /* If more arguments than parameters, add dummy entries. */
3121 for (i = min_len + 1; i <= nargs; i++)
3122 bv->rank[i] = TOO_FEW_PARAMS_BADNESS;
3127 /* Compare the names of two integer types, assuming that any sign
3128 qualifiers have been checked already. We do it this way because
3129 there may be an "int" in the name of one of the types. */
3132 integer_types_same_name_p (const char *first, const char *second)
3134 int first_p, second_p;
3136 /* If both are shorts, return 1; if neither is a short, keep
3138 first_p = (strstr (first, "short") != NULL);
3139 second_p = (strstr (second, "short") != NULL);
3140 if (first_p && second_p)
3142 if (first_p || second_p)
3145 /* Likewise for long. */
3146 first_p = (strstr (first, "long") != NULL);
3147 second_p = (strstr (second, "long") != NULL);
3148 if (first_p && second_p)
3150 if (first_p || second_p)
3153 /* Likewise for char. */
3154 first_p = (strstr (first, "char") != NULL);
3155 second_p = (strstr (second, "char") != NULL);
3156 if (first_p && second_p)
3158 if (first_p || second_p)
3161 /* They must both be ints. */
3165 /* Compares type A to type B returns 1 if the represent the same type
3169 types_equal (struct type *a, struct type *b)
3171 /* Identical type pointers. */
3172 /* However, this still doesn't catch all cases of same type for b
3173 and a. The reason is that builtin types are different from
3174 the same ones constructed from the object. */
3178 /* Resolve typedefs */
3179 if (TYPE_CODE (a) == TYPE_CODE_TYPEDEF)
3180 a = check_typedef (a);
3181 if (TYPE_CODE (b) == TYPE_CODE_TYPEDEF)
3182 b = check_typedef (b);
3184 /* If after resolving typedefs a and b are not of the same type
3185 code then they are not equal. */
3186 if (TYPE_CODE (a) != TYPE_CODE (b))
3189 /* If a and b are both pointers types or both reference types then
3190 they are equal of the same type iff the objects they refer to are
3191 of the same type. */
3192 if (TYPE_CODE (a) == TYPE_CODE_PTR
3193 || TYPE_CODE (a) == TYPE_CODE_REF)
3194 return types_equal (TYPE_TARGET_TYPE (a),
3195 TYPE_TARGET_TYPE (b));
3197 /* Well, damnit, if the names are exactly the same, I'll say they
3198 are exactly the same. This happens when we generate method
3199 stubs. The types won't point to the same address, but they
3200 really are the same. */
3202 if (TYPE_NAME (a) && TYPE_NAME (b)
3203 && strcmp (TYPE_NAME (a), TYPE_NAME (b)) == 0)
3206 /* Check if identical after resolving typedefs. */
3210 /* Two function types are equal if their argument and return types
3212 if (TYPE_CODE (a) == TYPE_CODE_FUNC)
3216 if (TYPE_NFIELDS (a) != TYPE_NFIELDS (b))
3219 if (!types_equal (TYPE_TARGET_TYPE (a), TYPE_TARGET_TYPE (b)))
3222 for (i = 0; i < TYPE_NFIELDS (a); ++i)
3223 if (!types_equal (TYPE_FIELD_TYPE (a, i), TYPE_FIELD_TYPE (b, i)))
3232 /* Deep comparison of types. */
3234 /* An entry in the type-equality bcache. */
3236 typedef struct type_equality_entry
3238 struct type *type1, *type2;
3239 } type_equality_entry_d;
3241 DEF_VEC_O (type_equality_entry_d);
3243 /* A helper function to compare two strings. Returns 1 if they are
3244 the same, 0 otherwise. Handles NULLs properly. */
3247 compare_maybe_null_strings (const char *s, const char *t)
3249 if (s == NULL && t != NULL)
3251 else if (s != NULL && t == NULL)
3253 else if (s == NULL && t== NULL)
3255 return strcmp (s, t) == 0;
3258 /* A helper function for check_types_worklist that checks two types for
3259 "deep" equality. Returns non-zero if the types are considered the
3260 same, zero otherwise. */
3263 check_types_equal (struct type *type1, struct type *type2,
3264 VEC (type_equality_entry_d) **worklist)
3266 type1 = check_typedef (type1);
3267 type2 = check_typedef (type2);
3272 if (TYPE_CODE (type1) != TYPE_CODE (type2)
3273 || TYPE_LENGTH (type1) != TYPE_LENGTH (type2)
3274 || TYPE_UNSIGNED (type1) != TYPE_UNSIGNED (type2)
3275 || TYPE_NOSIGN (type1) != TYPE_NOSIGN (type2)
3276 || TYPE_VARARGS (type1) != TYPE_VARARGS (type2)
3277 || TYPE_VECTOR (type1) != TYPE_VECTOR (type2)
3278 || TYPE_NOTTEXT (type1) != TYPE_NOTTEXT (type2)
3279 || TYPE_INSTANCE_FLAGS (type1) != TYPE_INSTANCE_FLAGS (type2)
3280 || TYPE_NFIELDS (type1) != TYPE_NFIELDS (type2))
3283 if (!compare_maybe_null_strings (TYPE_TAG_NAME (type1),
3284 TYPE_TAG_NAME (type2)))
3286 if (!compare_maybe_null_strings (TYPE_NAME (type1), TYPE_NAME (type2)))
3289 if (TYPE_CODE (type1) == TYPE_CODE_RANGE)
3291 if (memcmp (TYPE_RANGE_DATA (type1), TYPE_RANGE_DATA (type2),
3292 sizeof (*TYPE_RANGE_DATA (type1))) != 0)
3299 for (i = 0; i < TYPE_NFIELDS (type1); ++i)
3301 const struct field *field1 = &TYPE_FIELD (type1, i);
3302 const struct field *field2 = &TYPE_FIELD (type2, i);
3303 struct type_equality_entry entry;
3305 if (FIELD_ARTIFICIAL (*field1) != FIELD_ARTIFICIAL (*field2)
3306 || FIELD_BITSIZE (*field1) != FIELD_BITSIZE (*field2)
3307 || FIELD_LOC_KIND (*field1) != FIELD_LOC_KIND (*field2))
3309 if (!compare_maybe_null_strings (FIELD_NAME (*field1),
3310 FIELD_NAME (*field2)))
3312 switch (FIELD_LOC_KIND (*field1))
3314 case FIELD_LOC_KIND_BITPOS:
3315 if (FIELD_BITPOS (*field1) != FIELD_BITPOS (*field2))
3318 case FIELD_LOC_KIND_ENUMVAL:
3319 if (FIELD_ENUMVAL (*field1) != FIELD_ENUMVAL (*field2))
3322 case FIELD_LOC_KIND_PHYSADDR:
3323 if (FIELD_STATIC_PHYSADDR (*field1)
3324 != FIELD_STATIC_PHYSADDR (*field2))
3327 case FIELD_LOC_KIND_PHYSNAME:
3328 if (!compare_maybe_null_strings (FIELD_STATIC_PHYSNAME (*field1),
3329 FIELD_STATIC_PHYSNAME (*field2)))
3332 case FIELD_LOC_KIND_DWARF_BLOCK:
3334 struct dwarf2_locexpr_baton *block1, *block2;
3336 block1 = FIELD_DWARF_BLOCK (*field1);
3337 block2 = FIELD_DWARF_BLOCK (*field2);
3338 if (block1->per_cu != block2->per_cu
3339 || block1->size != block2->size
3340 || memcmp (block1->data, block2->data, block1->size) != 0)
3345 internal_error (__FILE__, __LINE__, _("Unsupported field kind "
3346 "%d by check_types_equal"),
3347 FIELD_LOC_KIND (*field1));
3350 entry.type1 = FIELD_TYPE (*field1);
3351 entry.type2 = FIELD_TYPE (*field2);
3352 VEC_safe_push (type_equality_entry_d, *worklist, &entry);
3356 if (TYPE_TARGET_TYPE (type1) != NULL)
3358 struct type_equality_entry entry;
3360 if (TYPE_TARGET_TYPE (type2) == NULL)
3363 entry.type1 = TYPE_TARGET_TYPE (type1);
3364 entry.type2 = TYPE_TARGET_TYPE (type2);
3365 VEC_safe_push (type_equality_entry_d, *worklist, &entry);
3367 else if (TYPE_TARGET_TYPE (type2) != NULL)
3373 /* Check types on a worklist for equality. Returns zero if any pair
3374 is not equal, non-zero if they are all considered equal. */
3377 check_types_worklist (VEC (type_equality_entry_d) **worklist,
3378 struct bcache *cache)
3380 while (!VEC_empty (type_equality_entry_d, *worklist))
3382 struct type_equality_entry entry;
3385 entry = *VEC_last (type_equality_entry_d, *worklist);
3386 VEC_pop (type_equality_entry_d, *worklist);
3388 /* If the type pair has already been visited, we know it is
3390 bcache_full (&entry, sizeof (entry), cache, &added);
3394 if (check_types_equal (entry.type1, entry.type2, worklist) == 0)
3401 /* Return non-zero if types TYPE1 and TYPE2 are equal, as determined by a
3402 "deep comparison". Otherwise return zero. */
3405 types_deeply_equal (struct type *type1, struct type *type2)
3407 struct gdb_exception except = exception_none;
3409 struct bcache *cache;
3410 VEC (type_equality_entry_d) *worklist = NULL;
3411 struct type_equality_entry entry;
3413 gdb_assert (type1 != NULL && type2 != NULL);
3415 /* Early exit for the simple case. */
3419 cache = bcache_xmalloc (NULL, NULL);
3421 entry.type1 = type1;
3422 entry.type2 = type2;
3423 VEC_safe_push (type_equality_entry_d, worklist, &entry);
3425 /* check_types_worklist calls several nested helper functions, some
3426 of which can raise a GDB exception, so we just check and rethrow
3427 here. If there is a GDB exception, a comparison is not capable
3428 (or trusted), so exit. */
3431 result = check_types_worklist (&worklist, cache);
3433 CATCH (ex, RETURN_MASK_ALL)
3439 bcache_xfree (cache);
3440 VEC_free (type_equality_entry_d, worklist);
3442 /* Rethrow if there was a problem. */
3443 if (except.reason < 0)
3444 throw_exception (except);
3449 /* Allocated status of type TYPE. Return zero if type TYPE is allocated.
3450 Otherwise return one. */
3453 type_not_allocated (const struct type *type)
3455 struct dynamic_prop *prop = TYPE_ALLOCATED_PROP (type);
3457 return (prop && TYPE_DYN_PROP_KIND (prop) == PROP_CONST
3458 && !TYPE_DYN_PROP_ADDR (prop));
3461 /* Associated status of type TYPE. Return zero if type TYPE is associated.
3462 Otherwise return one. */
3465 type_not_associated (const struct type *type)
3467 struct dynamic_prop *prop = TYPE_ASSOCIATED_PROP (type);
3469 return (prop && TYPE_DYN_PROP_KIND (prop) == PROP_CONST
3470 && !TYPE_DYN_PROP_ADDR (prop));
3473 /* Compare one type (PARM) for compatibility with another (ARG).
3474 * PARM is intended to be the parameter type of a function; and
3475 * ARG is the supplied argument's type. This function tests if
3476 * the latter can be converted to the former.
3477 * VALUE is the argument's value or NULL if none (or called recursively)
3479 * Return 0 if they are identical types;
3480 * Otherwise, return an integer which corresponds to how compatible
3481 * PARM is to ARG. The higher the return value, the worse the match.
3482 * Generally the "bad" conversions are all uniformly assigned a 100. */
3485 rank_one_type (struct type *parm, struct type *arg, struct value *value)
3487 struct rank rank = {0,0};
3489 if (types_equal (parm, arg))
3490 return EXACT_MATCH_BADNESS;
3492 /* Resolve typedefs */
3493 if (TYPE_CODE (parm) == TYPE_CODE_TYPEDEF)
3494 parm = check_typedef (parm);
3495 if (TYPE_CODE (arg) == TYPE_CODE_TYPEDEF)
3496 arg = check_typedef (arg);
3498 /* See through references, since we can almost make non-references
3500 if (TYPE_CODE (arg) == TYPE_CODE_REF)
3501 return (sum_ranks (rank_one_type (parm, TYPE_TARGET_TYPE (arg), NULL),
3502 REFERENCE_CONVERSION_BADNESS));
3503 if (TYPE_CODE (parm) == TYPE_CODE_REF)
3504 return (sum_ranks (rank_one_type (TYPE_TARGET_TYPE (parm), arg, NULL),
3505 REFERENCE_CONVERSION_BADNESS));
3507 /* Debugging only. */
3508 fprintf_filtered (gdb_stderr,
3509 "------ Arg is %s [%d], parm is %s [%d]\n",
3510 TYPE_NAME (arg), TYPE_CODE (arg),
3511 TYPE_NAME (parm), TYPE_CODE (parm));
3513 /* x -> y means arg of type x being supplied for parameter of type y. */
3515 switch (TYPE_CODE (parm))
3518 switch (TYPE_CODE (arg))
3522 /* Allowed pointer conversions are:
3523 (a) pointer to void-pointer conversion. */
3524 if (TYPE_CODE (TYPE_TARGET_TYPE (parm)) == TYPE_CODE_VOID)
3525 return VOID_PTR_CONVERSION_BADNESS;
3527 /* (b) pointer to ancestor-pointer conversion. */
3528 rank.subrank = distance_to_ancestor (TYPE_TARGET_TYPE (parm),
3529 TYPE_TARGET_TYPE (arg),
3531 if (rank.subrank >= 0)
3532 return sum_ranks (BASE_PTR_CONVERSION_BADNESS, rank);
3534 return INCOMPATIBLE_TYPE_BADNESS;
3535 case TYPE_CODE_ARRAY:
3536 if (types_equal (TYPE_TARGET_TYPE (parm),
3537 TYPE_TARGET_TYPE (arg)))
3538 return EXACT_MATCH_BADNESS;
3539 return INCOMPATIBLE_TYPE_BADNESS;
3540 case TYPE_CODE_FUNC:
3541 return rank_one_type (TYPE_TARGET_TYPE (parm), arg, NULL);
3543 if (value != NULL && TYPE_CODE (value_type (value)) == TYPE_CODE_INT)
3545 if (value_as_long (value) == 0)
3547 /* Null pointer conversion: allow it to be cast to a pointer.
3548 [4.10.1 of C++ standard draft n3290] */
3549 return NULL_POINTER_CONVERSION_BADNESS;
3553 /* If type checking is disabled, allow the conversion. */
3554 if (!strict_type_checking)
3555 return NS_INTEGER_POINTER_CONVERSION_BADNESS;
3559 case TYPE_CODE_ENUM:
3560 case TYPE_CODE_FLAGS:
3561 case TYPE_CODE_CHAR:
3562 case TYPE_CODE_RANGE:
3563 case TYPE_CODE_BOOL:
3565 return INCOMPATIBLE_TYPE_BADNESS;
3567 case TYPE_CODE_ARRAY:
3568 switch (TYPE_CODE (arg))
3571 case TYPE_CODE_ARRAY:
3572 return rank_one_type (TYPE_TARGET_TYPE (parm),
3573 TYPE_TARGET_TYPE (arg), NULL);
3575 return INCOMPATIBLE_TYPE_BADNESS;
3577 case TYPE_CODE_FUNC:
3578 switch (TYPE_CODE (arg))
3580 case TYPE_CODE_PTR: /* funcptr -> func */
3581 return rank_one_type (parm, TYPE_TARGET_TYPE (arg), NULL);
3583 return INCOMPATIBLE_TYPE_BADNESS;
3586 switch (TYPE_CODE (arg))
3589 if (TYPE_LENGTH (arg) == TYPE_LENGTH (parm))
3591 /* Deal with signed, unsigned, and plain chars and
3592 signed and unsigned ints. */
3593 if (TYPE_NOSIGN (parm))
3595 /* This case only for character types. */
3596 if (TYPE_NOSIGN (arg))
3597 return EXACT_MATCH_BADNESS; /* plain char -> plain char */
3598 else /* signed/unsigned char -> plain char */
3599 return INTEGER_CONVERSION_BADNESS;
3601 else if (TYPE_UNSIGNED (parm))
3603 if (TYPE_UNSIGNED (arg))
3605 /* unsigned int -> unsigned int, or
3606 unsigned long -> unsigned long */
3607 if (integer_types_same_name_p (TYPE_NAME (parm),
3609 return EXACT_MATCH_BADNESS;
3610 else if (integer_types_same_name_p (TYPE_NAME (arg),
3612 && integer_types_same_name_p (TYPE_NAME (parm),
3614 /* unsigned int -> unsigned long */
3615 return INTEGER_PROMOTION_BADNESS;
3617 /* unsigned long -> unsigned int */
3618 return INTEGER_CONVERSION_BADNESS;
3622 if (integer_types_same_name_p (TYPE_NAME (arg),
3624 && integer_types_same_name_p (TYPE_NAME (parm),
3626 /* signed long -> unsigned int */
3627 return INTEGER_CONVERSION_BADNESS;
3629 /* signed int/long -> unsigned int/long */
3630 return INTEGER_CONVERSION_BADNESS;
3633 else if (!TYPE_NOSIGN (arg) && !TYPE_UNSIGNED (arg))
3635 if (integer_types_same_name_p (TYPE_NAME (parm),
3637 return EXACT_MATCH_BADNESS;
3638 else if (integer_types_same_name_p (TYPE_NAME (arg),
3640 && integer_types_same_name_p (TYPE_NAME (parm),
3642 return INTEGER_PROMOTION_BADNESS;
3644 return INTEGER_CONVERSION_BADNESS;
3647 return INTEGER_CONVERSION_BADNESS;
3649 else if (TYPE_LENGTH (arg) < TYPE_LENGTH (parm))
3650 return INTEGER_PROMOTION_BADNESS;
3652 return INTEGER_CONVERSION_BADNESS;
3653 case TYPE_CODE_ENUM:
3654 case TYPE_CODE_FLAGS:
3655 case TYPE_CODE_CHAR:
3656 case TYPE_CODE_RANGE:
3657 case TYPE_CODE_BOOL:
3658 if (TYPE_DECLARED_CLASS (arg))
3659 return INCOMPATIBLE_TYPE_BADNESS;
3660 return INTEGER_PROMOTION_BADNESS;
3662 return INT_FLOAT_CONVERSION_BADNESS;
3664 return NS_POINTER_CONVERSION_BADNESS;
3666 return INCOMPATIBLE_TYPE_BADNESS;
3669 case TYPE_CODE_ENUM:
3670 switch (TYPE_CODE (arg))
3673 case TYPE_CODE_CHAR:
3674 case TYPE_CODE_RANGE:
3675 case TYPE_CODE_BOOL:
3676 case TYPE_CODE_ENUM:
3677 if (TYPE_DECLARED_CLASS (parm) || TYPE_DECLARED_CLASS (arg))
3678 return INCOMPATIBLE_TYPE_BADNESS;
3679 return INTEGER_CONVERSION_BADNESS;
3681 return INT_FLOAT_CONVERSION_BADNESS;
3683 return INCOMPATIBLE_TYPE_BADNESS;
3686 case TYPE_CODE_CHAR:
3687 switch (TYPE_CODE (arg))
3689 case TYPE_CODE_RANGE:
3690 case TYPE_CODE_BOOL:
3691 case TYPE_CODE_ENUM:
3692 if (TYPE_DECLARED_CLASS (arg))
3693 return INCOMPATIBLE_TYPE_BADNESS;
3694 return INTEGER_CONVERSION_BADNESS;
3696 return INT_FLOAT_CONVERSION_BADNESS;
3698 if (TYPE_LENGTH (arg) > TYPE_LENGTH (parm))
3699 return INTEGER_CONVERSION_BADNESS;
3700 else if (TYPE_LENGTH (arg) < TYPE_LENGTH (parm))
3701 return INTEGER_PROMOTION_BADNESS;
3702 /* >>> !! else fall through !! <<< */
3703 case TYPE_CODE_CHAR:
3704 /* Deal with signed, unsigned, and plain chars for C++ and
3705 with int cases falling through from previous case. */
3706 if (TYPE_NOSIGN (parm))
3708 if (TYPE_NOSIGN (arg))
3709 return EXACT_MATCH_BADNESS;
3711 return INTEGER_CONVERSION_BADNESS;
3713 else if (TYPE_UNSIGNED (parm))
3715 if (TYPE_UNSIGNED (arg))
3716 return EXACT_MATCH_BADNESS;
3718 return INTEGER_PROMOTION_BADNESS;
3720 else if (!TYPE_NOSIGN (arg) && !TYPE_UNSIGNED (arg))
3721 return EXACT_MATCH_BADNESS;
3723 return INTEGER_CONVERSION_BADNESS;
3725 return INCOMPATIBLE_TYPE_BADNESS;
3728 case TYPE_CODE_RANGE:
3729 switch (TYPE_CODE (arg))
3732 case TYPE_CODE_CHAR:
3733 case TYPE_CODE_RANGE:
3734 case TYPE_CODE_BOOL:
3735 case TYPE_CODE_ENUM:
3736 return INTEGER_CONVERSION_BADNESS;
3738 return INT_FLOAT_CONVERSION_BADNESS;
3740 return INCOMPATIBLE_TYPE_BADNESS;
3743 case TYPE_CODE_BOOL:
3744 switch (TYPE_CODE (arg))
3746 /* n3290 draft, section 4.12.1 (conv.bool):
3748 "A prvalue of arithmetic, unscoped enumeration, pointer, or
3749 pointer to member type can be converted to a prvalue of type
3750 bool. A zero value, null pointer value, or null member pointer
3751 value is converted to false; any other value is converted to
3752 true. A prvalue of type std::nullptr_t can be converted to a
3753 prvalue of type bool; the resulting value is false." */
3755 case TYPE_CODE_CHAR:
3756 case TYPE_CODE_ENUM:
3758 case TYPE_CODE_MEMBERPTR:
3760 return BOOL_CONVERSION_BADNESS;
3761 case TYPE_CODE_RANGE:
3762 return INCOMPATIBLE_TYPE_BADNESS;
3763 case TYPE_CODE_BOOL:
3764 return EXACT_MATCH_BADNESS;
3766 return INCOMPATIBLE_TYPE_BADNESS;
3770 switch (TYPE_CODE (arg))
3773 if (TYPE_LENGTH (arg) < TYPE_LENGTH (parm))
3774 return FLOAT_PROMOTION_BADNESS;
3775 else if (TYPE_LENGTH (arg) == TYPE_LENGTH (parm))
3776 return EXACT_MATCH_BADNESS;
3778 return FLOAT_CONVERSION_BADNESS;
3780 case TYPE_CODE_BOOL:
3781 case TYPE_CODE_ENUM:
3782 case TYPE_CODE_RANGE:
3783 case TYPE_CODE_CHAR:
3784 return INT_FLOAT_CONVERSION_BADNESS;
3786 return INCOMPATIBLE_TYPE_BADNESS;
3789 case TYPE_CODE_COMPLEX:
3790 switch (TYPE_CODE (arg))
3791 { /* Strictly not needed for C++, but... */
3793 return FLOAT_PROMOTION_BADNESS;
3794 case TYPE_CODE_COMPLEX:
3795 return EXACT_MATCH_BADNESS;
3797 return INCOMPATIBLE_TYPE_BADNESS;
3800 case TYPE_CODE_STRUCT:
3801 switch (TYPE_CODE (arg))
3803 case TYPE_CODE_STRUCT:
3804 /* Check for derivation */
3805 rank.subrank = distance_to_ancestor (parm, arg, 0);
3806 if (rank.subrank >= 0)
3807 return sum_ranks (BASE_CONVERSION_BADNESS, rank);
3808 /* else fall through */
3810 return INCOMPATIBLE_TYPE_BADNESS;
3813 case TYPE_CODE_UNION:
3814 switch (TYPE_CODE (arg))
3816 case TYPE_CODE_UNION:
3818 return INCOMPATIBLE_TYPE_BADNESS;
3821 case TYPE_CODE_MEMBERPTR:
3822 switch (TYPE_CODE (arg))
3825 return INCOMPATIBLE_TYPE_BADNESS;
3828 case TYPE_CODE_METHOD:
3829 switch (TYPE_CODE (arg))
3833 return INCOMPATIBLE_TYPE_BADNESS;
3837 switch (TYPE_CODE (arg))
3841 return INCOMPATIBLE_TYPE_BADNESS;
3846 switch (TYPE_CODE (arg))
3850 return rank_one_type (TYPE_FIELD_TYPE (parm, 0),
3851 TYPE_FIELD_TYPE (arg, 0), NULL);
3853 return INCOMPATIBLE_TYPE_BADNESS;
3856 case TYPE_CODE_VOID:
3858 return INCOMPATIBLE_TYPE_BADNESS;
3859 } /* switch (TYPE_CODE (arg)) */
3862 /* End of functions for overload resolution. */
3864 /* Routines to pretty-print types. */
3867 print_bit_vector (B_TYPE *bits, int nbits)
3871 for (bitno = 0; bitno < nbits; bitno++)
3873 if ((bitno % 8) == 0)
3875 puts_filtered (" ");
3877 if (B_TST (bits, bitno))
3878 printf_filtered (("1"));
3880 printf_filtered (("0"));
3884 /* Note the first arg should be the "this" pointer, we may not want to
3885 include it since we may get into a infinitely recursive
3889 print_args (struct field *args, int nargs, int spaces)
3895 for (i = 0; i < nargs; i++)
3897 printfi_filtered (spaces, "[%d] name '%s'\n", i,
3898 args[i].name != NULL ? args[i].name : "<NULL>");
3899 recursive_dump_type (args[i].type, spaces + 2);
3905 field_is_static (struct field *f)
3907 /* "static" fields are the fields whose location is not relative
3908 to the address of the enclosing struct. It would be nice to
3909 have a dedicated flag that would be set for static fields when
3910 the type is being created. But in practice, checking the field
3911 loc_kind should give us an accurate answer. */
3912 return (FIELD_LOC_KIND (*f) == FIELD_LOC_KIND_PHYSNAME
3913 || FIELD_LOC_KIND (*f) == FIELD_LOC_KIND_PHYSADDR);
3917 dump_fn_fieldlists (struct type *type, int spaces)
3923 printfi_filtered (spaces, "fn_fieldlists ");
3924 gdb_print_host_address (TYPE_FN_FIELDLISTS (type), gdb_stdout);
3925 printf_filtered ("\n");
3926 for (method_idx = 0; method_idx < TYPE_NFN_FIELDS (type); method_idx++)
3928 f = TYPE_FN_FIELDLIST1 (type, method_idx);
3929 printfi_filtered (spaces + 2, "[%d] name '%s' (",
3931 TYPE_FN_FIELDLIST_NAME (type, method_idx));
3932 gdb_print_host_address (TYPE_FN_FIELDLIST_NAME (type, method_idx),
3934 printf_filtered (_(") length %d\n"),
3935 TYPE_FN_FIELDLIST_LENGTH (type, method_idx));
3936 for (overload_idx = 0;
3937 overload_idx < TYPE_FN_FIELDLIST_LENGTH (type, method_idx);
3940 printfi_filtered (spaces + 4, "[%d] physname '%s' (",
3942 TYPE_FN_FIELD_PHYSNAME (f, overload_idx));
3943 gdb_print_host_address (TYPE_FN_FIELD_PHYSNAME (f, overload_idx),
3945 printf_filtered (")\n");
3946 printfi_filtered (spaces + 8, "type ");
3947 gdb_print_host_address (TYPE_FN_FIELD_TYPE (f, overload_idx),
3949 printf_filtered ("\n");
3951 recursive_dump_type (TYPE_FN_FIELD_TYPE (f, overload_idx),
3954 printfi_filtered (spaces + 8, "args ");
3955 gdb_print_host_address (TYPE_FN_FIELD_ARGS (f, overload_idx),
3957 printf_filtered ("\n");
3958 print_args (TYPE_FN_FIELD_ARGS (f, overload_idx),
3959 TYPE_NFIELDS (TYPE_FN_FIELD_TYPE (f, overload_idx)),
3961 printfi_filtered (spaces + 8, "fcontext ");
3962 gdb_print_host_address (TYPE_FN_FIELD_FCONTEXT (f, overload_idx),
3964 printf_filtered ("\n");
3966 printfi_filtered (spaces + 8, "is_const %d\n",
3967 TYPE_FN_FIELD_CONST (f, overload_idx));
3968 printfi_filtered (spaces + 8, "is_volatile %d\n",
3969 TYPE_FN_FIELD_VOLATILE (f, overload_idx));
3970 printfi_filtered (spaces + 8, "is_private %d\n",
3971 TYPE_FN_FIELD_PRIVATE (f, overload_idx));
3972 printfi_filtered (spaces + 8, "is_protected %d\n",
3973 TYPE_FN_FIELD_PROTECTED (f, overload_idx));
3974 printfi_filtered (spaces + 8, "is_stub %d\n",
3975 TYPE_FN_FIELD_STUB (f, overload_idx));
3976 printfi_filtered (spaces + 8, "voffset %u\n",
3977 TYPE_FN_FIELD_VOFFSET (f, overload_idx));
3983 print_cplus_stuff (struct type *type, int spaces)
3985 printfi_filtered (spaces, "vptr_fieldno %d\n", TYPE_VPTR_FIELDNO (type));
3986 printfi_filtered (spaces, "vptr_basetype ");
3987 gdb_print_host_address (TYPE_VPTR_BASETYPE (type), gdb_stdout);
3988 puts_filtered ("\n");
3989 if (TYPE_VPTR_BASETYPE (type) != NULL)
3990 recursive_dump_type (TYPE_VPTR_BASETYPE (type), spaces + 2);
3992 printfi_filtered (spaces, "n_baseclasses %d\n",
3993 TYPE_N_BASECLASSES (type));
3994 printfi_filtered (spaces, "nfn_fields %d\n",
3995 TYPE_NFN_FIELDS (type));
3996 if (TYPE_N_BASECLASSES (type) > 0)
3998 printfi_filtered (spaces, "virtual_field_bits (%d bits at *",
3999 TYPE_N_BASECLASSES (type));
4000 gdb_print_host_address (TYPE_FIELD_VIRTUAL_BITS (type),
4002 printf_filtered (")");
4004 print_bit_vector (TYPE_FIELD_VIRTUAL_BITS (type),
4005 TYPE_N_BASECLASSES (type));
4006 puts_filtered ("\n");
4008 if (TYPE_NFIELDS (type) > 0)
4010 if (TYPE_FIELD_PRIVATE_BITS (type) != NULL)
4012 printfi_filtered (spaces,
4013 "private_field_bits (%d bits at *",
4014 TYPE_NFIELDS (type));
4015 gdb_print_host_address (TYPE_FIELD_PRIVATE_BITS (type),
4017 printf_filtered (")");
4018 print_bit_vector (TYPE_FIELD_PRIVATE_BITS (type),
4019 TYPE_NFIELDS (type));
4020 puts_filtered ("\n");
4022 if (TYPE_FIELD_PROTECTED_BITS (type) != NULL)
4024 printfi_filtered (spaces,
4025 "protected_field_bits (%d bits at *",
4026 TYPE_NFIELDS (type));
4027 gdb_print_host_address (TYPE_FIELD_PROTECTED_BITS (type),
4029 printf_filtered (")");
4030 print_bit_vector (TYPE_FIELD_PROTECTED_BITS (type),
4031 TYPE_NFIELDS (type));
4032 puts_filtered ("\n");
4035 if (TYPE_NFN_FIELDS (type) > 0)
4037 dump_fn_fieldlists (type, spaces);
4041 /* Print the contents of the TYPE's type_specific union, assuming that
4042 its type-specific kind is TYPE_SPECIFIC_GNAT_STUFF. */
4045 print_gnat_stuff (struct type *type, int spaces)
4047 struct type *descriptive_type = TYPE_DESCRIPTIVE_TYPE (type);
4049 if (descriptive_type == NULL)
4050 printfi_filtered (spaces + 2, "no descriptive type\n");
4053 printfi_filtered (spaces + 2, "descriptive type\n");
4054 recursive_dump_type (descriptive_type, spaces + 4);
4058 static struct obstack dont_print_type_obstack;
4061 recursive_dump_type (struct type *type, int spaces)
4066 obstack_begin (&dont_print_type_obstack, 0);
4068 if (TYPE_NFIELDS (type) > 0
4069 || (HAVE_CPLUS_STRUCT (type) && TYPE_NFN_FIELDS (type) > 0))
4071 struct type **first_dont_print
4072 = (struct type **) obstack_base (&dont_print_type_obstack);
4074 int i = (struct type **)
4075 obstack_next_free (&dont_print_type_obstack) - first_dont_print;
4079 if (type == first_dont_print[i])
4081 printfi_filtered (spaces, "type node ");
4082 gdb_print_host_address (type, gdb_stdout);
4083 printf_filtered (_(" <same as already seen type>\n"));
4088 obstack_ptr_grow (&dont_print_type_obstack, type);
4091 printfi_filtered (spaces, "type node ");
4092 gdb_print_host_address (type, gdb_stdout);
4093 printf_filtered ("\n");
4094 printfi_filtered (spaces, "name '%s' (",
4095 TYPE_NAME (type) ? TYPE_NAME (type) : "<NULL>");
4096 gdb_print_host_address (TYPE_NAME (type), gdb_stdout);
4097 printf_filtered (")\n");
4098 printfi_filtered (spaces, "tagname '%s' (",
4099 TYPE_TAG_NAME (type) ? TYPE_TAG_NAME (type) : "<NULL>");
4100 gdb_print_host_address (TYPE_TAG_NAME (type), gdb_stdout);
4101 printf_filtered (")\n");
4102 printfi_filtered (spaces, "code 0x%x ", TYPE_CODE (type));
4103 switch (TYPE_CODE (type))
4105 case TYPE_CODE_UNDEF:
4106 printf_filtered ("(TYPE_CODE_UNDEF)");
4109 printf_filtered ("(TYPE_CODE_PTR)");
4111 case TYPE_CODE_ARRAY:
4112 printf_filtered ("(TYPE_CODE_ARRAY)");
4114 case TYPE_CODE_STRUCT:
4115 printf_filtered ("(TYPE_CODE_STRUCT)");
4117 case TYPE_CODE_UNION:
4118 printf_filtered ("(TYPE_CODE_UNION)");
4120 case TYPE_CODE_ENUM:
4121 printf_filtered ("(TYPE_CODE_ENUM)");
4123 case TYPE_CODE_FLAGS:
4124 printf_filtered ("(TYPE_CODE_FLAGS)");
4126 case TYPE_CODE_FUNC:
4127 printf_filtered ("(TYPE_CODE_FUNC)");
4130 printf_filtered ("(TYPE_CODE_INT)");
4133 printf_filtered ("(TYPE_CODE_FLT)");
4135 case TYPE_CODE_VOID:
4136 printf_filtered ("(TYPE_CODE_VOID)");
4139 printf_filtered ("(TYPE_CODE_SET)");
4141 case TYPE_CODE_RANGE:
4142 printf_filtered ("(TYPE_CODE_RANGE)");
4144 case TYPE_CODE_STRING:
4145 printf_filtered ("(TYPE_CODE_STRING)");
4147 case TYPE_CODE_ERROR:
4148 printf_filtered ("(TYPE_CODE_ERROR)");
4150 case TYPE_CODE_MEMBERPTR:
4151 printf_filtered ("(TYPE_CODE_MEMBERPTR)");
4153 case TYPE_CODE_METHODPTR:
4154 printf_filtered ("(TYPE_CODE_METHODPTR)");
4156 case TYPE_CODE_METHOD:
4157 printf_filtered ("(TYPE_CODE_METHOD)");
4160 printf_filtered ("(TYPE_CODE_REF)");
4162 case TYPE_CODE_CHAR:
4163 printf_filtered ("(TYPE_CODE_CHAR)");
4165 case TYPE_CODE_BOOL:
4166 printf_filtered ("(TYPE_CODE_BOOL)");
4168 case TYPE_CODE_COMPLEX:
4169 printf_filtered ("(TYPE_CODE_COMPLEX)");
4171 case TYPE_CODE_TYPEDEF:
4172 printf_filtered ("(TYPE_CODE_TYPEDEF)");
4174 case TYPE_CODE_NAMESPACE:
4175 printf_filtered ("(TYPE_CODE_NAMESPACE)");
4178 printf_filtered ("(UNKNOWN TYPE CODE)");
4181 puts_filtered ("\n");
4182 printfi_filtered (spaces, "length %d\n", TYPE_LENGTH (type));
4183 if (TYPE_OBJFILE_OWNED (type))
4185 printfi_filtered (spaces, "objfile ");
4186 gdb_print_host_address (TYPE_OWNER (type).objfile, gdb_stdout);
4190 printfi_filtered (spaces, "gdbarch ");
4191 gdb_print_host_address (TYPE_OWNER (type).gdbarch, gdb_stdout);
4193 printf_filtered ("\n");
4194 printfi_filtered (spaces, "target_type ");
4195 gdb_print_host_address (TYPE_TARGET_TYPE (type), gdb_stdout);
4196 printf_filtered ("\n");
4197 if (TYPE_TARGET_TYPE (type) != NULL)
4199 recursive_dump_type (TYPE_TARGET_TYPE (type), spaces + 2);
4201 printfi_filtered (spaces, "pointer_type ");
4202 gdb_print_host_address (TYPE_POINTER_TYPE (type), gdb_stdout);
4203 printf_filtered ("\n");
4204 printfi_filtered (spaces, "reference_type ");
4205 gdb_print_host_address (TYPE_REFERENCE_TYPE (type), gdb_stdout);
4206 printf_filtered ("\n");
4207 printfi_filtered (spaces, "type_chain ");
4208 gdb_print_host_address (TYPE_CHAIN (type), gdb_stdout);
4209 printf_filtered ("\n");
4210 printfi_filtered (spaces, "instance_flags 0x%x",
4211 TYPE_INSTANCE_FLAGS (type));
4212 if (TYPE_CONST (type))
4214 puts_filtered (" TYPE_FLAG_CONST");
4216 if (TYPE_VOLATILE (type))
4218 puts_filtered (" TYPE_FLAG_VOLATILE");
4220 if (TYPE_CODE_SPACE (type))
4222 puts_filtered (" TYPE_FLAG_CODE_SPACE");
4224 if (TYPE_DATA_SPACE (type))
4226 puts_filtered (" TYPE_FLAG_DATA_SPACE");
4228 if (TYPE_ADDRESS_CLASS_1 (type))
4230 puts_filtered (" TYPE_FLAG_ADDRESS_CLASS_1");
4232 if (TYPE_ADDRESS_CLASS_2 (type))
4234 puts_filtered (" TYPE_FLAG_ADDRESS_CLASS_2");
4236 if (TYPE_RESTRICT (type))
4238 puts_filtered (" TYPE_FLAG_RESTRICT");
4240 if (TYPE_ATOMIC (type))
4242 puts_filtered (" TYPE_FLAG_ATOMIC");
4244 puts_filtered ("\n");
4246 printfi_filtered (spaces, "flags");
4247 if (TYPE_UNSIGNED (type))
4249 puts_filtered (" TYPE_FLAG_UNSIGNED");
4251 if (TYPE_NOSIGN (type))
4253 puts_filtered (" TYPE_FLAG_NOSIGN");
4255 if (TYPE_STUB (type))
4257 puts_filtered (" TYPE_FLAG_STUB");
4259 if (TYPE_TARGET_STUB (type))
4261 puts_filtered (" TYPE_FLAG_TARGET_STUB");
4263 if (TYPE_STATIC (type))
4265 puts_filtered (" TYPE_FLAG_STATIC");
4267 if (TYPE_PROTOTYPED (type))
4269 puts_filtered (" TYPE_FLAG_PROTOTYPED");
4271 if (TYPE_INCOMPLETE (type))
4273 puts_filtered (" TYPE_FLAG_INCOMPLETE");
4275 if (TYPE_VARARGS (type))
4277 puts_filtered (" TYPE_FLAG_VARARGS");
4279 /* This is used for things like AltiVec registers on ppc. Gcc emits
4280 an attribute for the array type, which tells whether or not we
4281 have a vector, instead of a regular array. */
4282 if (TYPE_VECTOR (type))
4284 puts_filtered (" TYPE_FLAG_VECTOR");
4286 if (TYPE_FIXED_INSTANCE (type))
4288 puts_filtered (" TYPE_FIXED_INSTANCE");
4290 if (TYPE_STUB_SUPPORTED (type))
4292 puts_filtered (" TYPE_STUB_SUPPORTED");
4294 if (TYPE_NOTTEXT (type))
4296 puts_filtered (" TYPE_NOTTEXT");
4298 puts_filtered ("\n");
4299 printfi_filtered (spaces, "nfields %d ", TYPE_NFIELDS (type));
4300 gdb_print_host_address (TYPE_FIELDS (type), gdb_stdout);
4301 puts_filtered ("\n");
4302 for (idx = 0; idx < TYPE_NFIELDS (type); idx++)
4304 if (TYPE_CODE (type) == TYPE_CODE_ENUM)
4305 printfi_filtered (spaces + 2,
4306 "[%d] enumval %s type ",
4307 idx, plongest (TYPE_FIELD_ENUMVAL (type, idx)));
4309 printfi_filtered (spaces + 2,
4310 "[%d] bitpos %s bitsize %d type ",
4311 idx, plongest (TYPE_FIELD_BITPOS (type, idx)),
4312 TYPE_FIELD_BITSIZE (type, idx));
4313 gdb_print_host_address (TYPE_FIELD_TYPE (type, idx), gdb_stdout);
4314 printf_filtered (" name '%s' (",
4315 TYPE_FIELD_NAME (type, idx) != NULL
4316 ? TYPE_FIELD_NAME (type, idx)
4318 gdb_print_host_address (TYPE_FIELD_NAME (type, idx), gdb_stdout);
4319 printf_filtered (")\n");
4320 if (TYPE_FIELD_TYPE (type, idx) != NULL)
4322 recursive_dump_type (TYPE_FIELD_TYPE (type, idx), spaces + 4);
4325 if (TYPE_CODE (type) == TYPE_CODE_RANGE)
4327 printfi_filtered (spaces, "low %s%s high %s%s\n",
4328 plongest (TYPE_LOW_BOUND (type)),
4329 TYPE_LOW_BOUND_UNDEFINED (type) ? " (undefined)" : "",
4330 plongest (TYPE_HIGH_BOUND (type)),
4331 TYPE_HIGH_BOUND_UNDEFINED (type)
4332 ? " (undefined)" : "");
4335 switch (TYPE_SPECIFIC_FIELD (type))
4337 case TYPE_SPECIFIC_CPLUS_STUFF:
4338 printfi_filtered (spaces, "cplus_stuff ");
4339 gdb_print_host_address (TYPE_CPLUS_SPECIFIC (type),
4341 puts_filtered ("\n");
4342 print_cplus_stuff (type, spaces);
4345 case TYPE_SPECIFIC_GNAT_STUFF:
4346 printfi_filtered (spaces, "gnat_stuff ");
4347 gdb_print_host_address (TYPE_GNAT_SPECIFIC (type), gdb_stdout);
4348 puts_filtered ("\n");
4349 print_gnat_stuff (type, spaces);
4352 case TYPE_SPECIFIC_FLOATFORMAT:
4353 printfi_filtered (spaces, "floatformat ");
4354 if (TYPE_FLOATFORMAT (type) == NULL)
4355 puts_filtered ("(null)");
4358 puts_filtered ("{ ");
4359 if (TYPE_FLOATFORMAT (type)[0] == NULL
4360 || TYPE_FLOATFORMAT (type)[0]->name == NULL)
4361 puts_filtered ("(null)");
4363 puts_filtered (TYPE_FLOATFORMAT (type)[0]->name);
4365 puts_filtered (", ");
4366 if (TYPE_FLOATFORMAT (type)[1] == NULL
4367 || TYPE_FLOATFORMAT (type)[1]->name == NULL)
4368 puts_filtered ("(null)");
4370 puts_filtered (TYPE_FLOATFORMAT (type)[1]->name);
4372 puts_filtered (" }");
4374 puts_filtered ("\n");
4377 case TYPE_SPECIFIC_FUNC:
4378 printfi_filtered (spaces, "calling_convention %d\n",
4379 TYPE_CALLING_CONVENTION (type));
4380 /* tail_call_list is not printed. */
4383 case TYPE_SPECIFIC_SELF_TYPE:
4384 printfi_filtered (spaces, "self_type ");
4385 gdb_print_host_address (TYPE_SELF_TYPE (type), gdb_stdout);
4386 puts_filtered ("\n");
4391 obstack_free (&dont_print_type_obstack, NULL);
4394 /* Trivial helpers for the libiberty hash table, for mapping one
4399 struct type *old, *newobj;
4403 type_pair_hash (const void *item)
4405 const struct type_pair *pair = (const struct type_pair *) item;
4407 return htab_hash_pointer (pair->old);
4411 type_pair_eq (const void *item_lhs, const void *item_rhs)
4413 const struct type_pair *lhs = (const struct type_pair *) item_lhs;
4414 const struct type_pair *rhs = (const struct type_pair *) item_rhs;
4416 return lhs->old == rhs->old;
4419 /* Allocate the hash table used by copy_type_recursive to walk
4420 types without duplicates. We use OBJFILE's obstack, because
4421 OBJFILE is about to be deleted. */
4424 create_copied_types_hash (struct objfile *objfile)
4426 return htab_create_alloc_ex (1, type_pair_hash, type_pair_eq,
4427 NULL, &objfile->objfile_obstack,
4428 hashtab_obstack_allocate,
4429 dummy_obstack_deallocate);
4432 /* Recursively copy (deep copy) a dynamic attribute list of a type. */
4434 static struct dynamic_prop_list *
4435 copy_dynamic_prop_list (struct obstack *objfile_obstack,
4436 struct dynamic_prop_list *list)
4438 struct dynamic_prop_list *copy = list;
4439 struct dynamic_prop_list **node_ptr = ©
4441 while (*node_ptr != NULL)
4443 struct dynamic_prop_list *node_copy;
4445 node_copy = ((struct dynamic_prop_list *)
4446 obstack_copy (objfile_obstack, *node_ptr,
4447 sizeof (struct dynamic_prop_list)));
4448 node_copy->prop = (*node_ptr)->prop;
4449 *node_ptr = node_copy;
4451 node_ptr = &node_copy->next;
4457 /* Recursively copy (deep copy) TYPE, if it is associated with
4458 OBJFILE. Return a new type owned by the gdbarch associated with the type, a
4459 saved type if we have already visited TYPE (using COPIED_TYPES), or TYPE if
4460 it is not associated with OBJFILE. */
4463 copy_type_recursive (struct objfile *objfile,
4465 htab_t copied_types)
4467 struct type_pair *stored, pair;
4469 struct type *new_type;
4471 if (! TYPE_OBJFILE_OWNED (type))
4474 /* This type shouldn't be pointing to any types in other objfiles;
4475 if it did, the type might disappear unexpectedly. */
4476 gdb_assert (TYPE_OBJFILE (type) == objfile);
4479 slot = htab_find_slot (copied_types, &pair, INSERT);
4481 return ((struct type_pair *) *slot)->newobj;
4483 new_type = alloc_type_arch (get_type_arch (type));
4485 /* We must add the new type to the hash table immediately, in case
4486 we encounter this type again during a recursive call below. */
4487 stored = XOBNEW (&objfile->objfile_obstack, struct type_pair);
4489 stored->newobj = new_type;
4492 /* Copy the common fields of types. For the main type, we simply
4493 copy the entire thing and then update specific fields as needed. */
4494 *TYPE_MAIN_TYPE (new_type) = *TYPE_MAIN_TYPE (type);
4495 TYPE_OBJFILE_OWNED (new_type) = 0;
4496 TYPE_OWNER (new_type).gdbarch = get_type_arch (type);
4498 if (TYPE_NAME (type))
4499 TYPE_NAME (new_type) = xstrdup (TYPE_NAME (type));
4500 if (TYPE_TAG_NAME (type))
4501 TYPE_TAG_NAME (new_type) = xstrdup (TYPE_TAG_NAME (type));
4503 TYPE_INSTANCE_FLAGS (new_type) = TYPE_INSTANCE_FLAGS (type);
4504 TYPE_LENGTH (new_type) = TYPE_LENGTH (type);
4506 /* Copy the fields. */
4507 if (TYPE_NFIELDS (type))
4511 nfields = TYPE_NFIELDS (type);
4512 TYPE_FIELDS (new_type) = XCNEWVEC (struct field, nfields);
4513 for (i = 0; i < nfields; i++)
4515 TYPE_FIELD_ARTIFICIAL (new_type, i) =
4516 TYPE_FIELD_ARTIFICIAL (type, i);
4517 TYPE_FIELD_BITSIZE (new_type, i) = TYPE_FIELD_BITSIZE (type, i);
4518 if (TYPE_FIELD_TYPE (type, i))
4519 TYPE_FIELD_TYPE (new_type, i)
4520 = copy_type_recursive (objfile, TYPE_FIELD_TYPE (type, i),
4522 if (TYPE_FIELD_NAME (type, i))
4523 TYPE_FIELD_NAME (new_type, i) =
4524 xstrdup (TYPE_FIELD_NAME (type, i));
4525 switch (TYPE_FIELD_LOC_KIND (type, i))
4527 case FIELD_LOC_KIND_BITPOS:
4528 SET_FIELD_BITPOS (TYPE_FIELD (new_type, i),
4529 TYPE_FIELD_BITPOS (type, i));
4531 case FIELD_LOC_KIND_ENUMVAL:
4532 SET_FIELD_ENUMVAL (TYPE_FIELD (new_type, i),
4533 TYPE_FIELD_ENUMVAL (type, i));
4535 case FIELD_LOC_KIND_PHYSADDR:
4536 SET_FIELD_PHYSADDR (TYPE_FIELD (new_type, i),
4537 TYPE_FIELD_STATIC_PHYSADDR (type, i));
4539 case FIELD_LOC_KIND_PHYSNAME:
4540 SET_FIELD_PHYSNAME (TYPE_FIELD (new_type, i),
4541 xstrdup (TYPE_FIELD_STATIC_PHYSNAME (type,
4545 internal_error (__FILE__, __LINE__,
4546 _("Unexpected type field location kind: %d"),
4547 TYPE_FIELD_LOC_KIND (type, i));
4552 /* For range types, copy the bounds information. */
4553 if (TYPE_CODE (type) == TYPE_CODE_RANGE)
4555 TYPE_RANGE_DATA (new_type) = XNEW (struct range_bounds);
4556 *TYPE_RANGE_DATA (new_type) = *TYPE_RANGE_DATA (type);
4559 if (TYPE_DYN_PROP_LIST (type) != NULL)
4560 TYPE_DYN_PROP_LIST (new_type)
4561 = copy_dynamic_prop_list (&objfile->objfile_obstack,
4562 TYPE_DYN_PROP_LIST (type));
4565 /* Copy pointers to other types. */
4566 if (TYPE_TARGET_TYPE (type))
4567 TYPE_TARGET_TYPE (new_type) =
4568 copy_type_recursive (objfile,
4569 TYPE_TARGET_TYPE (type),
4572 /* Maybe copy the type_specific bits.
4574 NOTE drow/2005-12-09: We do not copy the C++-specific bits like
4575 base classes and methods. There's no fundamental reason why we
4576 can't, but at the moment it is not needed. */
4578 switch (TYPE_SPECIFIC_FIELD (type))
4580 case TYPE_SPECIFIC_NONE:
4582 case TYPE_SPECIFIC_FUNC:
4583 INIT_FUNC_SPECIFIC (new_type);
4584 TYPE_CALLING_CONVENTION (new_type) = TYPE_CALLING_CONVENTION (type);
4585 TYPE_NO_RETURN (new_type) = TYPE_NO_RETURN (type);
4586 TYPE_TAIL_CALL_LIST (new_type) = NULL;
4588 case TYPE_SPECIFIC_FLOATFORMAT:
4589 TYPE_FLOATFORMAT (new_type) = TYPE_FLOATFORMAT (type);
4591 case TYPE_SPECIFIC_CPLUS_STUFF:
4592 INIT_CPLUS_SPECIFIC (new_type);
4594 case TYPE_SPECIFIC_GNAT_STUFF:
4595 INIT_GNAT_SPECIFIC (new_type);
4597 case TYPE_SPECIFIC_SELF_TYPE:
4598 set_type_self_type (new_type,
4599 copy_type_recursive (objfile, TYPE_SELF_TYPE (type),
4603 gdb_assert_not_reached ("bad type_specific_kind");
4609 /* Make a copy of the given TYPE, except that the pointer & reference
4610 types are not preserved.
4612 This function assumes that the given type has an associated objfile.
4613 This objfile is used to allocate the new type. */
4616 copy_type (const struct type *type)
4618 struct type *new_type;
4620 gdb_assert (TYPE_OBJFILE_OWNED (type));
4622 new_type = alloc_type_copy (type);
4623 TYPE_INSTANCE_FLAGS (new_type) = TYPE_INSTANCE_FLAGS (type);
4624 TYPE_LENGTH (new_type) = TYPE_LENGTH (type);
4625 memcpy (TYPE_MAIN_TYPE (new_type), TYPE_MAIN_TYPE (type),
4626 sizeof (struct main_type));
4627 if (TYPE_DYN_PROP_LIST (type) != NULL)
4628 TYPE_DYN_PROP_LIST (new_type)
4629 = copy_dynamic_prop_list (&TYPE_OBJFILE (type) -> objfile_obstack,
4630 TYPE_DYN_PROP_LIST (type));
4635 /* Helper functions to initialize architecture-specific types. */
4637 /* Allocate a type structure associated with GDBARCH and set its
4638 CODE, LENGTH, and NAME fields. */
4641 arch_type (struct gdbarch *gdbarch,
4642 enum type_code code, int length, const char *name)
4646 type = alloc_type_arch (gdbarch);
4647 set_type_code (type, code);
4648 TYPE_LENGTH (type) = length;
4651 TYPE_NAME (type) = gdbarch_obstack_strdup (gdbarch, name);
4656 /* Allocate a TYPE_CODE_INT type structure associated with GDBARCH.
4657 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
4658 the type's TYPE_UNSIGNED flag. NAME is the type name. */
4661 arch_integer_type (struct gdbarch *gdbarch,
4662 int bit, int unsigned_p, const char *name)
4666 t = arch_type (gdbarch, TYPE_CODE_INT, bit / TARGET_CHAR_BIT, name);
4668 TYPE_UNSIGNED (t) = 1;
4669 if (name && strcmp (name, "char") == 0)
4670 TYPE_NOSIGN (t) = 1;
4675 /* Allocate a TYPE_CODE_CHAR type structure associated with GDBARCH.
4676 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
4677 the type's TYPE_UNSIGNED flag. NAME is the type name. */
4680 arch_character_type (struct gdbarch *gdbarch,
4681 int bit, int unsigned_p, const char *name)
4685 t = arch_type (gdbarch, TYPE_CODE_CHAR, bit / TARGET_CHAR_BIT, name);
4687 TYPE_UNSIGNED (t) = 1;
4692 /* Allocate a TYPE_CODE_BOOL type structure associated with GDBARCH.
4693 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
4694 the type's TYPE_UNSIGNED flag. NAME is the type name. */
4697 arch_boolean_type (struct gdbarch *gdbarch,
4698 int bit, int unsigned_p, const char *name)
4702 t = arch_type (gdbarch, TYPE_CODE_BOOL, bit / TARGET_CHAR_BIT, name);
4704 TYPE_UNSIGNED (t) = 1;
4709 /* Allocate a TYPE_CODE_FLT type structure associated with GDBARCH.
4710 BIT is the type size in bits; if BIT equals -1, the size is
4711 determined by the floatformat. NAME is the type name. Set the
4712 TYPE_FLOATFORMAT from FLOATFORMATS. */
4715 arch_float_type (struct gdbarch *gdbarch,
4716 int bit, const char *name,
4717 const struct floatformat **floatformats)
4723 gdb_assert (floatformats != NULL);
4724 gdb_assert (floatformats[0] != NULL && floatformats[1] != NULL);
4725 bit = floatformats[0]->totalsize;
4727 gdb_assert (bit >= 0);
4729 t = arch_type (gdbarch, TYPE_CODE_FLT, bit / TARGET_CHAR_BIT, name);
4730 TYPE_FLOATFORMAT (t) = floatformats;
4732 if (floatformats != NULL)
4734 size_t len = TYPE_LENGTH (t);
4736 gdb_assert (len >= floatformat_totalsize_bytes (floatformats[0]));
4737 gdb_assert (len >= floatformat_totalsize_bytes (floatformats[1]));
4743 /* Allocate a TYPE_CODE_COMPLEX type structure associated with GDBARCH.
4744 NAME is the type name. TARGET_TYPE is the component float type. */
4747 arch_complex_type (struct gdbarch *gdbarch,
4748 const char *name, struct type *target_type)
4752 t = arch_type (gdbarch, TYPE_CODE_COMPLEX,
4753 2 * TYPE_LENGTH (target_type), name);
4754 TYPE_TARGET_TYPE (t) = target_type;
4758 /* Allocate a TYPE_CODE_FLAGS type structure associated with GDBARCH.
4759 NAME is the type name. LENGTH is the size of the flag word in bytes. */
4762 arch_flags_type (struct gdbarch *gdbarch, const char *name, int length)
4764 int max_nfields = length * TARGET_CHAR_BIT;
4767 type = arch_type (gdbarch, TYPE_CODE_FLAGS, length, name);
4768 TYPE_UNSIGNED (type) = 1;
4769 TYPE_NFIELDS (type) = 0;
4770 /* Pre-allocate enough space assuming every field is one bit. */
4772 = (struct field *) TYPE_ZALLOC (type, max_nfields * sizeof (struct field));
4777 /* Add field to TYPE_CODE_FLAGS type TYPE to indicate the bit at
4778 position BITPOS is called NAME. Pass NAME as "" for fields that
4779 should not be printed. */
4782 append_flags_type_field (struct type *type, int start_bitpos, int nr_bits,
4783 struct type *field_type, const char *name)
4785 int type_bitsize = TYPE_LENGTH (type) * TARGET_CHAR_BIT;
4786 int field_nr = TYPE_NFIELDS (type);
4788 gdb_assert (TYPE_CODE (type) == TYPE_CODE_FLAGS);
4789 gdb_assert (TYPE_NFIELDS (type) + 1 <= type_bitsize);
4790 gdb_assert (start_bitpos >= 0 && start_bitpos < type_bitsize);
4791 gdb_assert (nr_bits >= 1 && nr_bits <= type_bitsize);
4792 gdb_assert (name != NULL);
4794 TYPE_FIELD_NAME (type, field_nr) = xstrdup (name);
4795 TYPE_FIELD_TYPE (type, field_nr) = field_type;
4796 SET_FIELD_BITPOS (TYPE_FIELD (type, field_nr), start_bitpos);
4797 TYPE_FIELD_BITSIZE (type, field_nr) = nr_bits;
4798 ++TYPE_NFIELDS (type);
4801 /* Special version of append_flags_type_field to add a flag field.
4802 Add field to TYPE_CODE_FLAGS type TYPE to indicate the bit at
4803 position BITPOS is called NAME. */
4806 append_flags_type_flag (struct type *type, int bitpos, const char *name)
4808 struct gdbarch *gdbarch = get_type_arch (type);
4810 append_flags_type_field (type, bitpos, 1,
4811 builtin_type (gdbarch)->builtin_bool,
4815 /* Allocate a TYPE_CODE_STRUCT or TYPE_CODE_UNION type structure (as
4816 specified by CODE) associated with GDBARCH. NAME is the type name. */
4819 arch_composite_type (struct gdbarch *gdbarch, const char *name,
4820 enum type_code code)
4824 gdb_assert (code == TYPE_CODE_STRUCT || code == TYPE_CODE_UNION);
4825 t = arch_type (gdbarch, code, 0, NULL);
4826 TYPE_TAG_NAME (t) = name;
4827 INIT_CPLUS_SPECIFIC (t);
4831 /* Add new field with name NAME and type FIELD to composite type T.
4832 Do not set the field's position or adjust the type's length;
4833 the caller should do so. Return the new field. */
4836 append_composite_type_field_raw (struct type *t, const char *name,
4841 TYPE_NFIELDS (t) = TYPE_NFIELDS (t) + 1;
4842 TYPE_FIELDS (t) = XRESIZEVEC (struct field, TYPE_FIELDS (t),
4844 f = &(TYPE_FIELDS (t)[TYPE_NFIELDS (t) - 1]);
4845 memset (f, 0, sizeof f[0]);
4846 FIELD_TYPE (f[0]) = field;
4847 FIELD_NAME (f[0]) = name;
4851 /* Add new field with name NAME and type FIELD to composite type T.
4852 ALIGNMENT (if non-zero) specifies the minimum field alignment. */
4855 append_composite_type_field_aligned (struct type *t, const char *name,
4856 struct type *field, int alignment)
4858 struct field *f = append_composite_type_field_raw (t, name, field);
4860 if (TYPE_CODE (t) == TYPE_CODE_UNION)
4862 if (TYPE_LENGTH (t) < TYPE_LENGTH (field))
4863 TYPE_LENGTH (t) = TYPE_LENGTH (field);
4865 else if (TYPE_CODE (t) == TYPE_CODE_STRUCT)
4867 TYPE_LENGTH (t) = TYPE_LENGTH (t) + TYPE_LENGTH (field);
4868 if (TYPE_NFIELDS (t) > 1)
4870 SET_FIELD_BITPOS (f[0],
4871 (FIELD_BITPOS (f[-1])
4872 + (TYPE_LENGTH (FIELD_TYPE (f[-1]))
4873 * TARGET_CHAR_BIT)));
4879 alignment *= TARGET_CHAR_BIT;
4880 left = FIELD_BITPOS (f[0]) % alignment;
4884 SET_FIELD_BITPOS (f[0], FIELD_BITPOS (f[0]) + (alignment - left));
4885 TYPE_LENGTH (t) += (alignment - left) / TARGET_CHAR_BIT;
4892 /* Add new field with name NAME and type FIELD to composite type T. */
4895 append_composite_type_field (struct type *t, const char *name,
4898 append_composite_type_field_aligned (t, name, field, 0);
4901 static struct gdbarch_data *gdbtypes_data;
4903 const struct builtin_type *
4904 builtin_type (struct gdbarch *gdbarch)
4906 return (const struct builtin_type *) gdbarch_data (gdbarch, gdbtypes_data);
4910 gdbtypes_post_init (struct gdbarch *gdbarch)
4912 struct builtin_type *builtin_type
4913 = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct builtin_type);
4916 builtin_type->builtin_void
4917 = arch_type (gdbarch, TYPE_CODE_VOID, 1, "void");
4918 builtin_type->builtin_char
4919 = arch_integer_type (gdbarch, TARGET_CHAR_BIT,
4920 !gdbarch_char_signed (gdbarch), "char");
4921 builtin_type->builtin_signed_char
4922 = arch_integer_type (gdbarch, TARGET_CHAR_BIT,
4924 builtin_type->builtin_unsigned_char
4925 = arch_integer_type (gdbarch, TARGET_CHAR_BIT,
4926 1, "unsigned char");
4927 builtin_type->builtin_short
4928 = arch_integer_type (gdbarch, gdbarch_short_bit (gdbarch),
4930 builtin_type->builtin_unsigned_short
4931 = arch_integer_type (gdbarch, gdbarch_short_bit (gdbarch),
4932 1, "unsigned short");
4933 builtin_type->builtin_int
4934 = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch),
4936 builtin_type->builtin_unsigned_int
4937 = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch),
4939 builtin_type->builtin_long
4940 = arch_integer_type (gdbarch, gdbarch_long_bit (gdbarch),
4942 builtin_type->builtin_unsigned_long
4943 = arch_integer_type (gdbarch, gdbarch_long_bit (gdbarch),
4944 1, "unsigned long");
4945 builtin_type->builtin_long_long
4946 = arch_integer_type (gdbarch, gdbarch_long_long_bit (gdbarch),
4948 builtin_type->builtin_unsigned_long_long
4949 = arch_integer_type (gdbarch, gdbarch_long_long_bit (gdbarch),
4950 1, "unsigned long long");
4951 builtin_type->builtin_float
4952 = arch_float_type (gdbarch, gdbarch_float_bit (gdbarch),
4953 "float", gdbarch_float_format (gdbarch));
4954 builtin_type->builtin_double
4955 = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch),
4956 "double", gdbarch_double_format (gdbarch));
4957 builtin_type->builtin_long_double
4958 = arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch),
4959 "long double", gdbarch_long_double_format (gdbarch));
4960 builtin_type->builtin_complex
4961 = arch_complex_type (gdbarch, "complex",
4962 builtin_type->builtin_float);
4963 builtin_type->builtin_double_complex
4964 = arch_complex_type (gdbarch, "double complex",
4965 builtin_type->builtin_double);
4966 builtin_type->builtin_string
4967 = arch_type (gdbarch, TYPE_CODE_STRING, 1, "string");
4968 builtin_type->builtin_bool
4969 = arch_type (gdbarch, TYPE_CODE_BOOL, 1, "bool");
4971 /* The following three are about decimal floating point types, which
4972 are 32-bits, 64-bits and 128-bits respectively. */
4973 builtin_type->builtin_decfloat
4974 = arch_type (gdbarch, TYPE_CODE_DECFLOAT, 32 / 8, "_Decimal32");
4975 builtin_type->builtin_decdouble
4976 = arch_type (gdbarch, TYPE_CODE_DECFLOAT, 64 / 8, "_Decimal64");
4977 builtin_type->builtin_declong
4978 = arch_type (gdbarch, TYPE_CODE_DECFLOAT, 128 / 8, "_Decimal128");
4980 /* "True" character types. */
4981 builtin_type->builtin_true_char
4982 = arch_character_type (gdbarch, TARGET_CHAR_BIT, 0, "true character");
4983 builtin_type->builtin_true_unsigned_char
4984 = arch_character_type (gdbarch, TARGET_CHAR_BIT, 1, "true character");
4986 /* Fixed-size integer types. */
4987 builtin_type->builtin_int0
4988 = arch_integer_type (gdbarch, 0, 0, "int0_t");
4989 builtin_type->builtin_int8
4990 = arch_integer_type (gdbarch, 8, 0, "int8_t");
4991 builtin_type->builtin_uint8
4992 = arch_integer_type (gdbarch, 8, 1, "uint8_t");
4993 builtin_type->builtin_int16
4994 = arch_integer_type (gdbarch, 16, 0, "int16_t");
4995 builtin_type->builtin_uint16
4996 = arch_integer_type (gdbarch, 16, 1, "uint16_t");
4997 builtin_type->builtin_int32
4998 = arch_integer_type (gdbarch, 32, 0, "int32_t");
4999 builtin_type->builtin_uint32
5000 = arch_integer_type (gdbarch, 32, 1, "uint32_t");
5001 builtin_type->builtin_int64
5002 = arch_integer_type (gdbarch, 64, 0, "int64_t");
5003 builtin_type->builtin_uint64
5004 = arch_integer_type (gdbarch, 64, 1, "uint64_t");
5005 builtin_type->builtin_int128
5006 = arch_integer_type (gdbarch, 128, 0, "int128_t");
5007 builtin_type->builtin_uint128
5008 = arch_integer_type (gdbarch, 128, 1, "uint128_t");
5009 TYPE_INSTANCE_FLAGS (builtin_type->builtin_int8) |=
5010 TYPE_INSTANCE_FLAG_NOTTEXT;
5011 TYPE_INSTANCE_FLAGS (builtin_type->builtin_uint8) |=
5012 TYPE_INSTANCE_FLAG_NOTTEXT;
5014 /* Wide character types. */
5015 builtin_type->builtin_char16
5016 = arch_integer_type (gdbarch, 16, 0, "char16_t");
5017 builtin_type->builtin_char32
5018 = arch_integer_type (gdbarch, 32, 0, "char32_t");
5021 /* Default data/code pointer types. */
5022 builtin_type->builtin_data_ptr
5023 = lookup_pointer_type (builtin_type->builtin_void);
5024 builtin_type->builtin_func_ptr
5025 = lookup_pointer_type (lookup_function_type (builtin_type->builtin_void));
5026 builtin_type->builtin_func_func
5027 = lookup_function_type (builtin_type->builtin_func_ptr);
5029 /* This type represents a GDB internal function. */
5030 builtin_type->internal_fn
5031 = arch_type (gdbarch, TYPE_CODE_INTERNAL_FUNCTION, 0,
5032 "<internal function>");
5034 /* This type represents an xmethod. */
5035 builtin_type->xmethod
5036 = arch_type (gdbarch, TYPE_CODE_XMETHOD, 0, "<xmethod>");
5038 return builtin_type;
5041 /* This set of objfile-based types is intended to be used by symbol
5042 readers as basic types. */
5044 static const struct objfile_data *objfile_type_data;
5046 const struct objfile_type *
5047 objfile_type (struct objfile *objfile)
5049 struct gdbarch *gdbarch;
5050 struct objfile_type *objfile_type
5051 = (struct objfile_type *) objfile_data (objfile, objfile_type_data);
5054 return objfile_type;
5056 objfile_type = OBSTACK_CALLOC (&objfile->objfile_obstack,
5057 1, struct objfile_type);
5059 /* Use the objfile architecture to determine basic type properties. */
5060 gdbarch = get_objfile_arch (objfile);
5063 objfile_type->builtin_void
5064 = init_type (TYPE_CODE_VOID, 1,
5068 objfile_type->builtin_char
5069 = init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
5071 | (gdbarch_char_signed (gdbarch) ? 0 : TYPE_FLAG_UNSIGNED)),
5073 objfile_type->builtin_signed_char
5074 = init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
5076 "signed char", objfile);
5077 objfile_type->builtin_unsigned_char
5078 = init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
5080 "unsigned char", objfile);
5081 objfile_type->builtin_short
5082 = init_type (TYPE_CODE_INT,
5083 gdbarch_short_bit (gdbarch) / TARGET_CHAR_BIT,
5084 0, "short", objfile);
5085 objfile_type->builtin_unsigned_short
5086 = init_type (TYPE_CODE_INT,
5087 gdbarch_short_bit (gdbarch) / TARGET_CHAR_BIT,
5088 TYPE_FLAG_UNSIGNED, "unsigned short", objfile);
5089 objfile_type->builtin_int
5090 = init_type (TYPE_CODE_INT,
5091 gdbarch_int_bit (gdbarch) / TARGET_CHAR_BIT,
5093 objfile_type->builtin_unsigned_int
5094 = init_type (TYPE_CODE_INT,
5095 gdbarch_int_bit (gdbarch) / TARGET_CHAR_BIT,
5096 TYPE_FLAG_UNSIGNED, "unsigned int", objfile);
5097 objfile_type->builtin_long
5098 = init_type (TYPE_CODE_INT,
5099 gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT,
5100 0, "long", objfile);
5101 objfile_type->builtin_unsigned_long
5102 = init_type (TYPE_CODE_INT,
5103 gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT,
5104 TYPE_FLAG_UNSIGNED, "unsigned long", objfile);
5105 objfile_type->builtin_long_long
5106 = init_type (TYPE_CODE_INT,
5107 gdbarch_long_long_bit (gdbarch) / TARGET_CHAR_BIT,
5108 0, "long long", objfile);
5109 objfile_type->builtin_unsigned_long_long
5110 = init_type (TYPE_CODE_INT,
5111 gdbarch_long_long_bit (gdbarch) / TARGET_CHAR_BIT,
5112 TYPE_FLAG_UNSIGNED, "unsigned long long", objfile);
5114 objfile_type->builtin_float
5115 = init_type (TYPE_CODE_FLT,
5116 gdbarch_float_bit (gdbarch) / TARGET_CHAR_BIT,
5117 0, "float", objfile);
5118 TYPE_FLOATFORMAT (objfile_type->builtin_float)
5119 = gdbarch_float_format (gdbarch);
5120 objfile_type->builtin_double
5121 = init_type (TYPE_CODE_FLT,
5122 gdbarch_double_bit (gdbarch) / TARGET_CHAR_BIT,
5123 0, "double", objfile);
5124 TYPE_FLOATFORMAT (objfile_type->builtin_double)
5125 = gdbarch_double_format (gdbarch);
5126 objfile_type->builtin_long_double
5127 = init_type (TYPE_CODE_FLT,
5128 gdbarch_long_double_bit (gdbarch) / TARGET_CHAR_BIT,
5129 0, "long double", objfile);
5130 TYPE_FLOATFORMAT (objfile_type->builtin_long_double)
5131 = gdbarch_long_double_format (gdbarch);
5133 /* This type represents a type that was unrecognized in symbol read-in. */
5134 objfile_type->builtin_error
5135 = init_type (TYPE_CODE_ERROR, 0, 0, "<unknown type>", objfile);
5137 /* The following set of types is used for symbols with no
5138 debug information. */
5139 objfile_type->nodebug_text_symbol
5140 = init_type (TYPE_CODE_FUNC, 1, 0,
5141 "<text variable, no debug info>", objfile);
5142 TYPE_TARGET_TYPE (objfile_type->nodebug_text_symbol)
5143 = objfile_type->builtin_int;
5144 objfile_type->nodebug_text_gnu_ifunc_symbol
5145 = init_type (TYPE_CODE_FUNC, 1, TYPE_FLAG_GNU_IFUNC,
5146 "<text gnu-indirect-function variable, no debug info>",
5148 TYPE_TARGET_TYPE (objfile_type->nodebug_text_gnu_ifunc_symbol)
5149 = objfile_type->nodebug_text_symbol;
5150 objfile_type->nodebug_got_plt_symbol
5151 = init_type (TYPE_CODE_PTR, gdbarch_addr_bit (gdbarch) / 8, 0,
5152 "<text from jump slot in .got.plt, no debug info>",
5154 TYPE_TARGET_TYPE (objfile_type->nodebug_got_plt_symbol)
5155 = objfile_type->nodebug_text_symbol;
5156 objfile_type->nodebug_data_symbol
5157 = init_type (TYPE_CODE_INT,
5158 gdbarch_int_bit (gdbarch) / HOST_CHAR_BIT, 0,
5159 "<data variable, no debug info>", objfile);
5160 objfile_type->nodebug_unknown_symbol
5161 = init_type (TYPE_CODE_INT, 1, 0,
5162 "<variable (not text or data), no debug info>", objfile);
5163 objfile_type->nodebug_tls_symbol
5164 = init_type (TYPE_CODE_INT,
5165 gdbarch_int_bit (gdbarch) / HOST_CHAR_BIT, 0,
5166 "<thread local variable, no debug info>", objfile);
5168 /* NOTE: on some targets, addresses and pointers are not necessarily
5172 - gdb's `struct type' always describes the target's
5174 - gdb's `struct value' objects should always hold values in
5176 - gdb's CORE_ADDR values are addresses in the unified virtual
5177 address space that the assembler and linker work with. Thus,
5178 since target_read_memory takes a CORE_ADDR as an argument, it
5179 can access any memory on the target, even if the processor has
5180 separate code and data address spaces.
5182 In this context, objfile_type->builtin_core_addr is a bit odd:
5183 it's a target type for a value the target will never see. It's
5184 only used to hold the values of (typeless) linker symbols, which
5185 are indeed in the unified virtual address space. */
5187 objfile_type->builtin_core_addr
5188 = init_type (TYPE_CODE_INT,
5189 gdbarch_addr_bit (gdbarch) / 8,
5190 TYPE_FLAG_UNSIGNED, "__CORE_ADDR", objfile);
5192 set_objfile_data (objfile, objfile_type_data, objfile_type);
5193 return objfile_type;
5196 extern initialize_file_ftype _initialize_gdbtypes;
5199 _initialize_gdbtypes (void)
5201 gdbtypes_data = gdbarch_data_register_post_init (gdbtypes_post_init);
5202 objfile_type_data = register_objfile_data ();
5204 add_setshow_zuinteger_cmd ("overload", no_class, &overload_debug,
5205 _("Set debugging of C++ overloading."),
5206 _("Show debugging of C++ overloading."),
5207 _("When enabled, ranking of the "
5208 "functions is displayed."),
5210 show_overload_debug,
5211 &setdebuglist, &showdebuglist);
5213 /* Add user knob for controlling resolution of opaque types. */
5214 add_setshow_boolean_cmd ("opaque-type-resolution", class_support,
5215 &opaque_type_resolution,
5216 _("Set resolution of opaque struct/class/union"
5217 " types (if set before loading symbols)."),
5218 _("Show resolution of opaque struct/class/union"
5219 " types (if set before loading symbols)."),
5221 show_opaque_type_resolution,
5222 &setlist, &showlist);
5224 /* Add an option to permit non-strict type checking. */
5225 add_setshow_boolean_cmd ("type", class_support,
5226 &strict_type_checking,
5227 _("Set strict type checking."),
5228 _("Show strict type checking."),
5230 show_strict_type_checking,
5231 &setchecklist, &showchecklist);