1 /* Support routines for manipulating internal types for GDB.
3 Copyright (C) 1992-2015 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
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 = XCNEW (struct type);
202 TYPE_MAIN_TYPE (type) = XCNEW (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 /* Alloc a new type instance structure, fill it with some defaults,
256 and point it at OLDTYPE. Allocate the new type instance from the
257 same place as OLDTYPE. */
260 alloc_type_instance (struct type *oldtype)
264 /* Allocate the structure. */
266 if (! TYPE_OBJFILE_OWNED (oldtype))
267 type = XCNEW (struct type);
269 type = OBSTACK_ZALLOC (&TYPE_OBJFILE (oldtype)->objfile_obstack,
272 TYPE_MAIN_TYPE (type) = TYPE_MAIN_TYPE (oldtype);
274 TYPE_CHAIN (type) = type; /* Chain back to itself for now. */
279 /* Clear all remnants of the previous type at TYPE, in preparation for
280 replacing it with something else. Preserve owner information. */
283 smash_type (struct type *type)
285 int objfile_owned = TYPE_OBJFILE_OWNED (type);
286 union type_owner owner = TYPE_OWNER (type);
288 memset (TYPE_MAIN_TYPE (type), 0, sizeof (struct main_type));
290 /* Restore owner information. */
291 TYPE_OBJFILE_OWNED (type) = objfile_owned;
292 TYPE_OWNER (type) = owner;
294 /* For now, delete the rings. */
295 TYPE_CHAIN (type) = type;
297 /* For now, leave the pointer/reference types alone. */
300 /* Lookup a pointer to a type TYPE. TYPEPTR, if nonzero, points
301 to a pointer to memory where the pointer type should be stored.
302 If *TYPEPTR is zero, update it to point to the pointer type we return.
303 We allocate new memory if needed. */
306 make_pointer_type (struct type *type, struct type **typeptr)
308 struct type *ntype; /* New type */
311 ntype = TYPE_POINTER_TYPE (type);
316 return ntype; /* Don't care about alloc,
317 and have new type. */
318 else if (*typeptr == 0)
320 *typeptr = ntype; /* Tracking alloc, and have new type. */
325 if (typeptr == 0 || *typeptr == 0) /* We'll need to allocate one. */
327 ntype = alloc_type_copy (type);
331 else /* We have storage, but need to reset it. */
334 chain = TYPE_CHAIN (ntype);
336 TYPE_CHAIN (ntype) = chain;
339 TYPE_TARGET_TYPE (ntype) = type;
340 TYPE_POINTER_TYPE (type) = ntype;
342 /* FIXME! Assumes the machine has only one representation for pointers! */
345 = gdbarch_ptr_bit (get_type_arch (type)) / TARGET_CHAR_BIT;
346 TYPE_CODE (ntype) = TYPE_CODE_PTR;
348 /* Mark pointers as unsigned. The target converts between pointers
349 and addresses (CORE_ADDRs) using gdbarch_pointer_to_address and
350 gdbarch_address_to_pointer. */
351 TYPE_UNSIGNED (ntype) = 1;
353 /* Update the length of all the other variants of this type. */
354 chain = TYPE_CHAIN (ntype);
355 while (chain != ntype)
357 TYPE_LENGTH (chain) = TYPE_LENGTH (ntype);
358 chain = TYPE_CHAIN (chain);
364 /* Given a type TYPE, return a type of pointers to that type.
365 May need to construct such a type if this is the first use. */
368 lookup_pointer_type (struct type *type)
370 return make_pointer_type (type, (struct type **) 0);
373 /* Lookup a C++ `reference' to a type TYPE. TYPEPTR, if nonzero,
374 points to a pointer to memory where the reference type should be
375 stored. If *TYPEPTR is zero, update it to point to the reference
376 type we return. We allocate new memory if needed. */
379 make_reference_type (struct type *type, struct type **typeptr)
381 struct type *ntype; /* New type */
384 ntype = TYPE_REFERENCE_TYPE (type);
389 return ntype; /* Don't care about alloc,
390 and have new type. */
391 else if (*typeptr == 0)
393 *typeptr = ntype; /* Tracking alloc, and have new type. */
398 if (typeptr == 0 || *typeptr == 0) /* We'll need to allocate one. */
400 ntype = alloc_type_copy (type);
404 else /* We have storage, but need to reset it. */
407 chain = TYPE_CHAIN (ntype);
409 TYPE_CHAIN (ntype) = chain;
412 TYPE_TARGET_TYPE (ntype) = type;
413 TYPE_REFERENCE_TYPE (type) = ntype;
415 /* FIXME! Assume the machine has only one representation for
416 references, and that it matches the (only) representation for
419 TYPE_LENGTH (ntype) =
420 gdbarch_ptr_bit (get_type_arch (type)) / TARGET_CHAR_BIT;
421 TYPE_CODE (ntype) = TYPE_CODE_REF;
423 if (!TYPE_REFERENCE_TYPE (type)) /* Remember it, if don't have one. */
424 TYPE_REFERENCE_TYPE (type) = ntype;
426 /* Update the length of all the other variants of this type. */
427 chain = TYPE_CHAIN (ntype);
428 while (chain != ntype)
430 TYPE_LENGTH (chain) = TYPE_LENGTH (ntype);
431 chain = TYPE_CHAIN (chain);
437 /* Same as above, but caller doesn't care about memory allocation
441 lookup_reference_type (struct type *type)
443 return make_reference_type (type, (struct type **) 0);
446 /* Lookup a function type that returns type TYPE. TYPEPTR, if
447 nonzero, points to a pointer to memory where the function type
448 should be stored. If *TYPEPTR is zero, update it to point to the
449 function type we return. We allocate new memory if needed. */
452 make_function_type (struct type *type, struct type **typeptr)
454 struct type *ntype; /* New type */
456 if (typeptr == 0 || *typeptr == 0) /* We'll need to allocate one. */
458 ntype = alloc_type_copy (type);
462 else /* We have storage, but need to reset it. */
468 TYPE_TARGET_TYPE (ntype) = type;
470 TYPE_LENGTH (ntype) = 1;
471 TYPE_CODE (ntype) = TYPE_CODE_FUNC;
473 INIT_FUNC_SPECIFIC (ntype);
478 /* Given a type TYPE, return a type of functions that return that type.
479 May need to construct such a type if this is the first use. */
482 lookup_function_type (struct type *type)
484 return make_function_type (type, (struct type **) 0);
487 /* Given a type TYPE and argument types, return the appropriate
488 function type. If the final type in PARAM_TYPES is NULL, make a
492 lookup_function_type_with_arguments (struct type *type,
494 struct type **param_types)
496 struct type *fn = make_function_type (type, (struct type **) 0);
501 if (param_types[nparams - 1] == NULL)
504 TYPE_VARARGS (fn) = 1;
506 else if (TYPE_CODE (check_typedef (param_types[nparams - 1]))
510 /* Caller should have ensured this. */
511 gdb_assert (nparams == 0);
512 TYPE_PROTOTYPED (fn) = 1;
516 TYPE_NFIELDS (fn) = nparams;
517 TYPE_FIELDS (fn) = TYPE_ZALLOC (fn, nparams * sizeof (struct field));
518 for (i = 0; i < nparams; ++i)
519 TYPE_FIELD_TYPE (fn, i) = param_types[i];
524 /* Identify address space identifier by name --
525 return the integer flag defined in gdbtypes.h. */
528 address_space_name_to_int (struct gdbarch *gdbarch, char *space_identifier)
532 /* Check for known address space delimiters. */
533 if (!strcmp (space_identifier, "code"))
534 return TYPE_INSTANCE_FLAG_CODE_SPACE;
535 else if (!strcmp (space_identifier, "data"))
536 return TYPE_INSTANCE_FLAG_DATA_SPACE;
537 else if (gdbarch_address_class_name_to_type_flags_p (gdbarch)
538 && gdbarch_address_class_name_to_type_flags (gdbarch,
543 error (_("Unknown address space specifier: \"%s\""), space_identifier);
546 /* Identify address space identifier by integer flag as defined in
547 gdbtypes.h -- return the string version of the adress space name. */
550 address_space_int_to_name (struct gdbarch *gdbarch, int space_flag)
552 if (space_flag & TYPE_INSTANCE_FLAG_CODE_SPACE)
554 else if (space_flag & TYPE_INSTANCE_FLAG_DATA_SPACE)
556 else if ((space_flag & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL)
557 && gdbarch_address_class_type_flags_to_name_p (gdbarch))
558 return gdbarch_address_class_type_flags_to_name (gdbarch, space_flag);
563 /* Create a new type with instance flags NEW_FLAGS, based on TYPE.
565 If STORAGE is non-NULL, create the new type instance there.
566 STORAGE must be in the same obstack as TYPE. */
569 make_qualified_type (struct type *type, int new_flags,
570 struct type *storage)
577 if (TYPE_INSTANCE_FLAGS (ntype) == new_flags)
579 ntype = TYPE_CHAIN (ntype);
581 while (ntype != type);
583 /* Create a new type instance. */
585 ntype = alloc_type_instance (type);
588 /* If STORAGE was provided, it had better be in the same objfile
589 as TYPE. Otherwise, we can't link it into TYPE's cv chain:
590 if one objfile is freed and the other kept, we'd have
591 dangling pointers. */
592 gdb_assert (TYPE_OBJFILE (type) == TYPE_OBJFILE (storage));
595 TYPE_MAIN_TYPE (ntype) = TYPE_MAIN_TYPE (type);
596 TYPE_CHAIN (ntype) = ntype;
599 /* Pointers or references to the original type are not relevant to
601 TYPE_POINTER_TYPE (ntype) = (struct type *) 0;
602 TYPE_REFERENCE_TYPE (ntype) = (struct type *) 0;
604 /* Chain the new qualified type to the old type. */
605 TYPE_CHAIN (ntype) = TYPE_CHAIN (type);
606 TYPE_CHAIN (type) = ntype;
608 /* Now set the instance flags and return the new type. */
609 TYPE_INSTANCE_FLAGS (ntype) = new_flags;
611 /* Set length of new type to that of the original type. */
612 TYPE_LENGTH (ntype) = TYPE_LENGTH (type);
617 /* Make an address-space-delimited variant of a type -- a type that
618 is identical to the one supplied except that it has an address
619 space attribute attached to it (such as "code" or "data").
621 The space attributes "code" and "data" are for Harvard
622 architectures. The address space attributes are for architectures
623 which have alternately sized pointers or pointers with alternate
627 make_type_with_address_space (struct type *type, int space_flag)
629 int new_flags = ((TYPE_INSTANCE_FLAGS (type)
630 & ~(TYPE_INSTANCE_FLAG_CODE_SPACE
631 | TYPE_INSTANCE_FLAG_DATA_SPACE
632 | TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL))
635 return make_qualified_type (type, new_flags, NULL);
638 /* Make a "c-v" variant of a type -- a type that is identical to the
639 one supplied except that it may have const or volatile attributes
640 CNST is a flag for setting the const attribute
641 VOLTL is a flag for setting the volatile attribute
642 TYPE is the base type whose variant we are creating.
644 If TYPEPTR and *TYPEPTR are non-zero, then *TYPEPTR points to
645 storage to hold the new qualified type; *TYPEPTR and TYPE must be
646 in the same objfile. Otherwise, allocate fresh memory for the new
647 type whereever TYPE lives. If TYPEPTR is non-zero, set it to the
648 new type we construct. */
651 make_cv_type (int cnst, int voltl,
653 struct type **typeptr)
655 struct type *ntype; /* New type */
657 int new_flags = (TYPE_INSTANCE_FLAGS (type)
658 & ~(TYPE_INSTANCE_FLAG_CONST
659 | TYPE_INSTANCE_FLAG_VOLATILE));
662 new_flags |= TYPE_INSTANCE_FLAG_CONST;
665 new_flags |= TYPE_INSTANCE_FLAG_VOLATILE;
667 if (typeptr && *typeptr != NULL)
669 /* TYPE and *TYPEPTR must be in the same objfile. We can't have
670 a C-V variant chain that threads across objfiles: if one
671 objfile gets freed, then the other has a broken C-V chain.
673 This code used to try to copy over the main type from TYPE to
674 *TYPEPTR if they were in different objfiles, but that's
675 wrong, too: TYPE may have a field list or member function
676 lists, which refer to types of their own, etc. etc. The
677 whole shebang would need to be copied over recursively; you
678 can't have inter-objfile pointers. The only thing to do is
679 to leave stub types as stub types, and look them up afresh by
680 name each time you encounter them. */
681 gdb_assert (TYPE_OBJFILE (*typeptr) == TYPE_OBJFILE (type));
684 ntype = make_qualified_type (type, new_flags,
685 typeptr ? *typeptr : NULL);
693 /* Make a 'restrict'-qualified version of TYPE. */
696 make_restrict_type (struct type *type)
698 return make_qualified_type (type,
699 (TYPE_INSTANCE_FLAGS (type)
700 | TYPE_INSTANCE_FLAG_RESTRICT),
704 /* Make a type without const, volatile, or restrict. */
707 make_unqualified_type (struct type *type)
709 return make_qualified_type (type,
710 (TYPE_INSTANCE_FLAGS (type)
711 & ~(TYPE_INSTANCE_FLAG_CONST
712 | TYPE_INSTANCE_FLAG_VOLATILE
713 | TYPE_INSTANCE_FLAG_RESTRICT)),
717 /* Make a '_Atomic'-qualified version of TYPE. */
720 make_atomic_type (struct type *type)
722 return make_qualified_type (type,
723 (TYPE_INSTANCE_FLAGS (type)
724 | TYPE_INSTANCE_FLAG_ATOMIC),
728 /* Replace the contents of ntype with the type *type. This changes the
729 contents, rather than the pointer for TYPE_MAIN_TYPE (ntype); thus
730 the changes are propogated to all types in the TYPE_CHAIN.
732 In order to build recursive types, it's inevitable that we'll need
733 to update types in place --- but this sort of indiscriminate
734 smashing is ugly, and needs to be replaced with something more
735 controlled. TYPE_MAIN_TYPE is a step in this direction; it's not
736 clear if more steps are needed. */
739 replace_type (struct type *ntype, struct type *type)
743 /* These two types had better be in the same objfile. Otherwise,
744 the assignment of one type's main type structure to the other
745 will produce a type with references to objects (names; field
746 lists; etc.) allocated on an objfile other than its own. */
747 gdb_assert (TYPE_OBJFILE (ntype) == TYPE_OBJFILE (ntype));
749 *TYPE_MAIN_TYPE (ntype) = *TYPE_MAIN_TYPE (type);
751 /* The type length is not a part of the main type. Update it for
752 each type on the variant chain. */
756 /* Assert that this element of the chain has no address-class bits
757 set in its flags. Such type variants might have type lengths
758 which are supposed to be different from the non-address-class
759 variants. This assertion shouldn't ever be triggered because
760 symbol readers which do construct address-class variants don't
761 call replace_type(). */
762 gdb_assert (TYPE_ADDRESS_CLASS_ALL (chain) == 0);
764 TYPE_LENGTH (chain) = TYPE_LENGTH (type);
765 chain = TYPE_CHAIN (chain);
767 while (ntype != chain);
769 /* Assert that the two types have equivalent instance qualifiers.
770 This should be true for at least all of our debug readers. */
771 gdb_assert (TYPE_INSTANCE_FLAGS (ntype) == TYPE_INSTANCE_FLAGS (type));
774 /* Implement direct support for MEMBER_TYPE in GNU C++.
775 May need to construct such a type if this is the first use.
776 The TYPE is the type of the member. The DOMAIN is the type
777 of the aggregate that the member belongs to. */
780 lookup_memberptr_type (struct type *type, struct type *domain)
784 mtype = alloc_type_copy (type);
785 smash_to_memberptr_type (mtype, domain, type);
789 /* Return a pointer-to-method type, for a method of type TO_TYPE. */
792 lookup_methodptr_type (struct type *to_type)
796 mtype = alloc_type_copy (to_type);
797 smash_to_methodptr_type (mtype, to_type);
801 /* Allocate a stub method whose return type is TYPE. This apparently
802 happens for speed of symbol reading, since parsing out the
803 arguments to the method is cpu-intensive, the way we are doing it.
804 So, we will fill in arguments later. This always returns a fresh
808 allocate_stub_method (struct type *type)
812 mtype = alloc_type_copy (type);
813 TYPE_CODE (mtype) = TYPE_CODE_METHOD;
814 TYPE_LENGTH (mtype) = 1;
815 TYPE_STUB (mtype) = 1;
816 TYPE_TARGET_TYPE (mtype) = type;
817 /* TYPE_SELF_TYPE (mtype) = unknown yet */
821 /* Create a range type with a dynamic range from LOW_BOUND to
822 HIGH_BOUND, inclusive. See create_range_type for further details. */
825 create_range_type (struct type *result_type, struct type *index_type,
826 const struct dynamic_prop *low_bound,
827 const struct dynamic_prop *high_bound)
829 if (result_type == NULL)
830 result_type = alloc_type_copy (index_type);
831 TYPE_CODE (result_type) = TYPE_CODE_RANGE;
832 TYPE_TARGET_TYPE (result_type) = index_type;
833 if (TYPE_STUB (index_type))
834 TYPE_TARGET_STUB (result_type) = 1;
836 TYPE_LENGTH (result_type) = TYPE_LENGTH (check_typedef (index_type));
838 TYPE_RANGE_DATA (result_type) = (struct range_bounds *)
839 TYPE_ZALLOC (result_type, sizeof (struct range_bounds));
840 TYPE_RANGE_DATA (result_type)->low = *low_bound;
841 TYPE_RANGE_DATA (result_type)->high = *high_bound;
843 if (low_bound->kind == PROP_CONST && low_bound->data.const_val >= 0)
844 TYPE_UNSIGNED (result_type) = 1;
846 /* Ada allows the declaration of range types whose upper bound is
847 less than the lower bound, so checking the lower bound is not
848 enough. Make sure we do not mark a range type whose upper bound
849 is negative as unsigned. */
850 if (high_bound->kind == PROP_CONST && high_bound->data.const_val < 0)
851 TYPE_UNSIGNED (result_type) = 0;
856 /* Create a range type using either a blank type supplied in
857 RESULT_TYPE, or creating a new type, inheriting the objfile from
860 Indices will be of type INDEX_TYPE, and will range from LOW_BOUND
861 to HIGH_BOUND, inclusive.
863 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
864 sure it is TYPE_CODE_UNDEF before we bash it into a range type? */
867 create_static_range_type (struct type *result_type, struct type *index_type,
868 LONGEST low_bound, LONGEST high_bound)
870 struct dynamic_prop low, high;
872 low.kind = PROP_CONST;
873 low.data.const_val = low_bound;
875 high.kind = PROP_CONST;
876 high.data.const_val = high_bound;
878 result_type = create_range_type (result_type, index_type, &low, &high);
883 /* Predicate tests whether BOUNDS are static. Returns 1 if all bounds values
884 are static, otherwise returns 0. */
887 has_static_range (const struct range_bounds *bounds)
889 return (bounds->low.kind == PROP_CONST
890 && bounds->high.kind == PROP_CONST);
894 /* Set *LOWP and *HIGHP to the lower and upper bounds of discrete type
895 TYPE. Return 1 if type is a range type, 0 if it is discrete (and
896 bounds will fit in LONGEST), or -1 otherwise. */
899 get_discrete_bounds (struct type *type, LONGEST *lowp, LONGEST *highp)
901 type = check_typedef (type);
902 switch (TYPE_CODE (type))
904 case TYPE_CODE_RANGE:
905 *lowp = TYPE_LOW_BOUND (type);
906 *highp = TYPE_HIGH_BOUND (type);
909 if (TYPE_NFIELDS (type) > 0)
911 /* The enums may not be sorted by value, so search all
915 *lowp = *highp = TYPE_FIELD_ENUMVAL (type, 0);
916 for (i = 0; i < TYPE_NFIELDS (type); i++)
918 if (TYPE_FIELD_ENUMVAL (type, i) < *lowp)
919 *lowp = TYPE_FIELD_ENUMVAL (type, i);
920 if (TYPE_FIELD_ENUMVAL (type, i) > *highp)
921 *highp = TYPE_FIELD_ENUMVAL (type, i);
924 /* Set unsigned indicator if warranted. */
927 TYPE_UNSIGNED (type) = 1;
941 if (TYPE_LENGTH (type) > sizeof (LONGEST)) /* Too big */
943 if (!TYPE_UNSIGNED (type))
945 *lowp = -(1 << (TYPE_LENGTH (type) * TARGET_CHAR_BIT - 1));
949 /* ... fall through for unsigned ints ... */
952 /* This round-about calculation is to avoid shifting by
953 TYPE_LENGTH (type) * TARGET_CHAR_BIT, which will not work
954 if TYPE_LENGTH (type) == sizeof (LONGEST). */
955 *highp = 1 << (TYPE_LENGTH (type) * TARGET_CHAR_BIT - 1);
956 *highp = (*highp - 1) | *highp;
963 /* Assuming TYPE is a simple, non-empty array type, compute its upper
964 and lower bound. Save the low bound into LOW_BOUND if not NULL.
965 Save the high bound into HIGH_BOUND if not NULL.
967 Return 1 if the operation was successful. Return zero otherwise,
968 in which case the values of LOW_BOUND and HIGH_BOUNDS are unmodified.
970 We now simply use get_discrete_bounds call to get the values
971 of the low and high bounds.
972 get_discrete_bounds can return three values:
973 1, meaning that index is a range,
974 0, meaning that index is a discrete type,
975 or -1 for failure. */
978 get_array_bounds (struct type *type, LONGEST *low_bound, LONGEST *high_bound)
980 struct type *index = TYPE_INDEX_TYPE (type);
988 res = get_discrete_bounds (index, &low, &high);
992 /* Check if the array bounds are undefined. */
994 && ((low_bound && TYPE_ARRAY_LOWER_BOUND_IS_UNDEFINED (type))
995 || (high_bound && TYPE_ARRAY_UPPER_BOUND_IS_UNDEFINED (type))))
1007 /* Assuming that TYPE is a discrete type and VAL is a valid integer
1008 representation of a value of this type, save the corresponding
1009 position number in POS.
1011 Its differs from VAL only in the case of enumeration types. In
1012 this case, the position number of the value of the first listed
1013 enumeration literal is zero; the position number of the value of
1014 each subsequent enumeration literal is one more than that of its
1015 predecessor in the list.
1017 Return 1 if the operation was successful. Return zero otherwise,
1018 in which case the value of POS is unmodified.
1022 discrete_position (struct type *type, LONGEST val, LONGEST *pos)
1024 if (TYPE_CODE (type) == TYPE_CODE_ENUM)
1028 for (i = 0; i < TYPE_NFIELDS (type); i += 1)
1030 if (val == TYPE_FIELD_ENUMVAL (type, i))
1036 /* Invalid enumeration value. */
1046 /* Create an array type using either a blank type supplied in
1047 RESULT_TYPE, or creating a new type, inheriting the objfile from
1050 Elements will be of type ELEMENT_TYPE, the indices will be of type
1053 If BIT_STRIDE is not zero, build a packed array type whose element
1054 size is BIT_STRIDE. Otherwise, ignore this parameter.
1056 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
1057 sure it is TYPE_CODE_UNDEF before we bash it into an array
1061 create_array_type_with_stride (struct type *result_type,
1062 struct type *element_type,
1063 struct type *range_type,
1064 unsigned int bit_stride)
1066 if (result_type == NULL)
1067 result_type = alloc_type_copy (range_type);
1069 TYPE_CODE (result_type) = TYPE_CODE_ARRAY;
1070 TYPE_TARGET_TYPE (result_type) = element_type;
1071 if (has_static_range (TYPE_RANGE_DATA (range_type)))
1073 LONGEST low_bound, high_bound;
1075 if (get_discrete_bounds (range_type, &low_bound, &high_bound) < 0)
1076 low_bound = high_bound = 0;
1077 element_type = check_typedef (element_type);
1078 /* Be careful when setting the array length. Ada arrays can be
1079 empty arrays with the high_bound being smaller than the low_bound.
1080 In such cases, the array length should be zero. */
1081 if (high_bound < low_bound)
1082 TYPE_LENGTH (result_type) = 0;
1083 else if (bit_stride > 0)
1084 TYPE_LENGTH (result_type) =
1085 (bit_stride * (high_bound - low_bound + 1) + 7) / 8;
1087 TYPE_LENGTH (result_type) =
1088 TYPE_LENGTH (element_type) * (high_bound - low_bound + 1);
1092 /* This type is dynamic and its length needs to be computed
1093 on demand. In the meantime, avoid leaving the TYPE_LENGTH
1094 undefined by setting it to zero. Although we are not expected
1095 to trust TYPE_LENGTH in this case, setting the size to zero
1096 allows us to avoid allocating objects of random sizes in case
1097 we accidently do. */
1098 TYPE_LENGTH (result_type) = 0;
1101 TYPE_NFIELDS (result_type) = 1;
1102 TYPE_FIELDS (result_type) =
1103 (struct field *) TYPE_ZALLOC (result_type, sizeof (struct field));
1104 TYPE_INDEX_TYPE (result_type) = range_type;
1106 TYPE_FIELD_BITSIZE (result_type, 0) = bit_stride;
1108 /* TYPE_FLAG_TARGET_STUB will take care of zero length arrays. */
1109 if (TYPE_LENGTH (result_type) == 0)
1110 TYPE_TARGET_STUB (result_type) = 1;
1115 /* Same as create_array_type_with_stride but with no bit_stride
1116 (BIT_STRIDE = 0), thus building an unpacked array. */
1119 create_array_type (struct type *result_type,
1120 struct type *element_type,
1121 struct type *range_type)
1123 return create_array_type_with_stride (result_type, element_type,
1128 lookup_array_range_type (struct type *element_type,
1129 LONGEST low_bound, LONGEST high_bound)
1131 struct gdbarch *gdbarch = get_type_arch (element_type);
1132 struct type *index_type = builtin_type (gdbarch)->builtin_int;
1133 struct type *range_type
1134 = create_static_range_type (NULL, index_type, low_bound, high_bound);
1136 return create_array_type (NULL, element_type, range_type);
1139 /* Create a string type using either a blank type supplied in
1140 RESULT_TYPE, or creating a new type. String types are similar
1141 enough to array of char types that we can use create_array_type to
1142 build the basic type and then bash it into a string type.
1144 For fixed length strings, the range type contains 0 as the lower
1145 bound and the length of the string minus one as the upper bound.
1147 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
1148 sure it is TYPE_CODE_UNDEF before we bash it into a string
1152 create_string_type (struct type *result_type,
1153 struct type *string_char_type,
1154 struct type *range_type)
1156 result_type = create_array_type (result_type,
1159 TYPE_CODE (result_type) = TYPE_CODE_STRING;
1164 lookup_string_range_type (struct type *string_char_type,
1165 LONGEST low_bound, LONGEST high_bound)
1167 struct type *result_type;
1169 result_type = lookup_array_range_type (string_char_type,
1170 low_bound, high_bound);
1171 TYPE_CODE (result_type) = TYPE_CODE_STRING;
1176 create_set_type (struct type *result_type, struct type *domain_type)
1178 if (result_type == NULL)
1179 result_type = alloc_type_copy (domain_type);
1181 TYPE_CODE (result_type) = TYPE_CODE_SET;
1182 TYPE_NFIELDS (result_type) = 1;
1183 TYPE_FIELDS (result_type) = TYPE_ZALLOC (result_type, sizeof (struct field));
1185 if (!TYPE_STUB (domain_type))
1187 LONGEST low_bound, high_bound, bit_length;
1189 if (get_discrete_bounds (domain_type, &low_bound, &high_bound) < 0)
1190 low_bound = high_bound = 0;
1191 bit_length = high_bound - low_bound + 1;
1192 TYPE_LENGTH (result_type)
1193 = (bit_length + TARGET_CHAR_BIT - 1) / TARGET_CHAR_BIT;
1195 TYPE_UNSIGNED (result_type) = 1;
1197 TYPE_FIELD_TYPE (result_type, 0) = domain_type;
1202 /* Convert ARRAY_TYPE to a vector type. This may modify ARRAY_TYPE
1203 and any array types nested inside it. */
1206 make_vector_type (struct type *array_type)
1208 struct type *inner_array, *elt_type;
1211 /* Find the innermost array type, in case the array is
1212 multi-dimensional. */
1213 inner_array = array_type;
1214 while (TYPE_CODE (TYPE_TARGET_TYPE (inner_array)) == TYPE_CODE_ARRAY)
1215 inner_array = TYPE_TARGET_TYPE (inner_array);
1217 elt_type = TYPE_TARGET_TYPE (inner_array);
1218 if (TYPE_CODE (elt_type) == TYPE_CODE_INT)
1220 flags = TYPE_INSTANCE_FLAGS (elt_type) | TYPE_INSTANCE_FLAG_NOTTEXT;
1221 elt_type = make_qualified_type (elt_type, flags, NULL);
1222 TYPE_TARGET_TYPE (inner_array) = elt_type;
1225 TYPE_VECTOR (array_type) = 1;
1229 init_vector_type (struct type *elt_type, int n)
1231 struct type *array_type;
1233 array_type = lookup_array_range_type (elt_type, 0, n - 1);
1234 make_vector_type (array_type);
1238 /* Internal routine called by TYPE_SELF_TYPE to return the type that TYPE
1239 belongs to. In c++ this is the class of "this", but TYPE_THIS_TYPE is too
1240 confusing. "self" is a common enough replacement for "this".
1241 TYPE must be one of TYPE_CODE_METHODPTR, TYPE_CODE_MEMBERPTR, or
1242 TYPE_CODE_METHOD. */
1245 internal_type_self_type (struct type *type)
1247 switch (TYPE_CODE (type))
1249 case TYPE_CODE_METHODPTR:
1250 case TYPE_CODE_MEMBERPTR:
1251 if (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_NONE)
1253 gdb_assert (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_SELF_TYPE);
1254 return TYPE_MAIN_TYPE (type)->type_specific.self_type;
1255 case TYPE_CODE_METHOD:
1256 if (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_NONE)
1258 gdb_assert (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_FUNC);
1259 return TYPE_MAIN_TYPE (type)->type_specific.func_stuff->self_type;
1261 gdb_assert_not_reached ("bad type");
1265 /* Set the type of the class that TYPE belongs to.
1266 In c++ this is the class of "this".
1267 TYPE must be one of TYPE_CODE_METHODPTR, TYPE_CODE_MEMBERPTR, or
1268 TYPE_CODE_METHOD. */
1271 set_type_self_type (struct type *type, struct type *self_type)
1273 switch (TYPE_CODE (type))
1275 case TYPE_CODE_METHODPTR:
1276 case TYPE_CODE_MEMBERPTR:
1277 if (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_NONE)
1278 TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_SELF_TYPE;
1279 gdb_assert (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_SELF_TYPE);
1280 TYPE_MAIN_TYPE (type)->type_specific.self_type = self_type;
1282 case TYPE_CODE_METHOD:
1283 if (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_NONE)
1284 INIT_FUNC_SPECIFIC (type);
1285 gdb_assert (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_FUNC);
1286 TYPE_MAIN_TYPE (type)->type_specific.func_stuff->self_type = self_type;
1289 gdb_assert_not_reached ("bad type");
1293 /* Smash TYPE to be a type of pointers to members of SELF_TYPE with type
1294 TO_TYPE. A member pointer is a wierd thing -- it amounts to a
1295 typed offset into a struct, e.g. "an int at offset 8". A MEMBER
1296 TYPE doesn't include the offset (that's the value of the MEMBER
1297 itself), but does include the structure type into which it points
1300 When "smashing" the type, we preserve the objfile that the old type
1301 pointed to, since we aren't changing where the type is actually
1305 smash_to_memberptr_type (struct type *type, struct type *self_type,
1306 struct type *to_type)
1309 TYPE_CODE (type) = TYPE_CODE_MEMBERPTR;
1310 TYPE_TARGET_TYPE (type) = to_type;
1311 set_type_self_type (type, self_type);
1312 /* Assume that a data member pointer is the same size as a normal
1315 = gdbarch_ptr_bit (get_type_arch (to_type)) / TARGET_CHAR_BIT;
1318 /* Smash TYPE to be a type of pointer to methods type TO_TYPE.
1320 When "smashing" the type, we preserve the objfile that the old type
1321 pointed to, since we aren't changing where the type is actually
1325 smash_to_methodptr_type (struct type *type, struct type *to_type)
1328 TYPE_CODE (type) = TYPE_CODE_METHODPTR;
1329 TYPE_TARGET_TYPE (type) = to_type;
1330 set_type_self_type (type, TYPE_SELF_TYPE (to_type));
1331 TYPE_LENGTH (type) = cplus_method_ptr_size (to_type);
1334 /* Smash TYPE to be a type of method of SELF_TYPE with type TO_TYPE.
1335 METHOD just means `function that gets an extra "this" argument'.
1337 When "smashing" the type, we preserve the objfile that the old type
1338 pointed to, since we aren't changing where the type is actually
1342 smash_to_method_type (struct type *type, struct type *self_type,
1343 struct type *to_type, struct field *args,
1344 int nargs, int varargs)
1347 TYPE_CODE (type) = TYPE_CODE_METHOD;
1348 TYPE_TARGET_TYPE (type) = to_type;
1349 set_type_self_type (type, self_type);
1350 TYPE_FIELDS (type) = args;
1351 TYPE_NFIELDS (type) = nargs;
1353 TYPE_VARARGS (type) = 1;
1354 TYPE_LENGTH (type) = 1; /* In practice, this is never needed. */
1357 /* Return a typename for a struct/union/enum type without "struct ",
1358 "union ", or "enum ". If the type has a NULL name, return NULL. */
1361 type_name_no_tag (const struct type *type)
1363 if (TYPE_TAG_NAME (type) != NULL)
1364 return TYPE_TAG_NAME (type);
1366 /* Is there code which expects this to return the name if there is
1367 no tag name? My guess is that this is mainly used for C++ in
1368 cases where the two will always be the same. */
1369 return TYPE_NAME (type);
1372 /* A wrapper of type_name_no_tag which calls error if the type is anonymous.
1373 Since GCC PR debug/47510 DWARF provides associated information to detect the
1374 anonymous class linkage name from its typedef.
1376 Parameter TYPE should not yet have CHECK_TYPEDEF applied, this function will
1380 type_name_no_tag_or_error (struct type *type)
1382 struct type *saved_type = type;
1384 struct objfile *objfile;
1386 type = check_typedef (type);
1388 name = type_name_no_tag (type);
1392 name = type_name_no_tag (saved_type);
1393 objfile = TYPE_OBJFILE (saved_type);
1394 error (_("Invalid anonymous type %s [in module %s], GCC PR debug/47510 bug?"),
1395 name ? name : "<anonymous>",
1396 objfile ? objfile_name (objfile) : "<arch>");
1399 /* Lookup a typedef or primitive type named NAME, visible in lexical
1400 block BLOCK. If NOERR is nonzero, return zero if NAME is not
1401 suitably defined. */
1404 lookup_typename (const struct language_defn *language,
1405 struct gdbarch *gdbarch, const char *name,
1406 const struct block *block, int noerr)
1411 sym = lookup_symbol_in_language (name, block, VAR_DOMAIN,
1412 language->la_language, NULL);
1413 if (sym != NULL && SYMBOL_CLASS (sym) == LOC_TYPEDEF)
1414 return SYMBOL_TYPE (sym);
1418 error (_("No type named %s."), name);
1422 lookup_unsigned_typename (const struct language_defn *language,
1423 struct gdbarch *gdbarch, const char *name)
1425 char *uns = alloca (strlen (name) + 10);
1427 strcpy (uns, "unsigned ");
1428 strcpy (uns + 9, name);
1429 return lookup_typename (language, gdbarch, uns, (struct block *) NULL, 0);
1433 lookup_signed_typename (const struct language_defn *language,
1434 struct gdbarch *gdbarch, const char *name)
1437 char *uns = alloca (strlen (name) + 8);
1439 strcpy (uns, "signed ");
1440 strcpy (uns + 7, name);
1441 t = lookup_typename (language, gdbarch, uns, (struct block *) NULL, 1);
1442 /* If we don't find "signed FOO" just try again with plain "FOO". */
1445 return lookup_typename (language, gdbarch, name, (struct block *) NULL, 0);
1448 /* Lookup a structure type named "struct NAME",
1449 visible in lexical block BLOCK. */
1452 lookup_struct (const char *name, const struct block *block)
1456 sym = lookup_symbol (name, block, STRUCT_DOMAIN, 0);
1460 error (_("No struct type named %s."), name);
1462 if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_STRUCT)
1464 error (_("This context has class, union or enum %s, not a struct."),
1467 return (SYMBOL_TYPE (sym));
1470 /* Lookup a union type named "union NAME",
1471 visible in lexical block BLOCK. */
1474 lookup_union (const char *name, const struct block *block)
1479 sym = lookup_symbol (name, block, STRUCT_DOMAIN, 0);
1482 error (_("No union type named %s."), name);
1484 t = SYMBOL_TYPE (sym);
1486 if (TYPE_CODE (t) == TYPE_CODE_UNION)
1489 /* If we get here, it's not a union. */
1490 error (_("This context has class, struct or enum %s, not a union."),
1494 /* Lookup an enum type named "enum NAME",
1495 visible in lexical block BLOCK. */
1498 lookup_enum (const char *name, const struct block *block)
1502 sym = lookup_symbol (name, block, STRUCT_DOMAIN, 0);
1505 error (_("No enum type named %s."), name);
1507 if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_ENUM)
1509 error (_("This context has class, struct or union %s, not an enum."),
1512 return (SYMBOL_TYPE (sym));
1515 /* Lookup a template type named "template NAME<TYPE>",
1516 visible in lexical block BLOCK. */
1519 lookup_template_type (char *name, struct type *type,
1520 const struct block *block)
1523 char *nam = (char *)
1524 alloca (strlen (name) + strlen (TYPE_NAME (type)) + 4);
1528 strcat (nam, TYPE_NAME (type));
1529 strcat (nam, " >"); /* FIXME, extra space still introduced in gcc? */
1531 sym = lookup_symbol (nam, block, VAR_DOMAIN, 0);
1535 error (_("No template type named %s."), name);
1537 if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_STRUCT)
1539 error (_("This context has class, union or enum %s, not a struct."),
1542 return (SYMBOL_TYPE (sym));
1545 /* Given a type TYPE, lookup the type of the component of type named
1548 TYPE can be either a struct or union, or a pointer or reference to
1549 a struct or union. If it is a pointer or reference, its target
1550 type is automatically used. Thus '.' and '->' are interchangable,
1551 as specified for the definitions of the expression element types
1552 STRUCTOP_STRUCT and STRUCTOP_PTR.
1554 If NOERR is nonzero, return zero if NAME is not suitably defined.
1555 If NAME is the name of a baseclass type, return that type. */
1558 lookup_struct_elt_type (struct type *type, const char *name, int noerr)
1565 type = check_typedef (type);
1566 if (TYPE_CODE (type) != TYPE_CODE_PTR
1567 && TYPE_CODE (type) != TYPE_CODE_REF)
1569 type = TYPE_TARGET_TYPE (type);
1572 if (TYPE_CODE (type) != TYPE_CODE_STRUCT
1573 && TYPE_CODE (type) != TYPE_CODE_UNION)
1575 type_name = type_to_string (type);
1576 make_cleanup (xfree, type_name);
1577 error (_("Type %s is not a structure or union type."), type_name);
1581 /* FIXME: This change put in by Michael seems incorrect for the case
1582 where the structure tag name is the same as the member name.
1583 I.e. when doing "ptype bell->bar" for "struct foo { int bar; int
1584 foo; } bell;" Disabled by fnf. */
1588 type_name = type_name_no_tag (type);
1589 if (type_name != NULL && strcmp (type_name, name) == 0)
1594 for (i = TYPE_NFIELDS (type) - 1; i >= TYPE_N_BASECLASSES (type); i--)
1596 const char *t_field_name = TYPE_FIELD_NAME (type, i);
1598 if (t_field_name && (strcmp_iw (t_field_name, name) == 0))
1600 return TYPE_FIELD_TYPE (type, i);
1602 else if (!t_field_name || *t_field_name == '\0')
1604 struct type *subtype
1605 = lookup_struct_elt_type (TYPE_FIELD_TYPE (type, i), name, 1);
1607 if (subtype != NULL)
1612 /* OK, it's not in this class. Recursively check the baseclasses. */
1613 for (i = TYPE_N_BASECLASSES (type) - 1; i >= 0; i--)
1617 t = lookup_struct_elt_type (TYPE_BASECLASS (type, i), name, 1);
1629 type_name = type_to_string (type);
1630 make_cleanup (xfree, type_name);
1631 error (_("Type %s has no component named %s."), type_name, name);
1634 /* Store in *MAX the largest number representable by unsigned integer type
1638 get_unsigned_type_max (struct type *type, ULONGEST *max)
1642 type = check_typedef (type);
1643 gdb_assert (TYPE_CODE (type) == TYPE_CODE_INT && TYPE_UNSIGNED (type));
1644 gdb_assert (TYPE_LENGTH (type) <= sizeof (ULONGEST));
1646 /* Written this way to avoid overflow. */
1647 n = TYPE_LENGTH (type) * TARGET_CHAR_BIT;
1648 *max = ((((ULONGEST) 1 << (n - 1)) - 1) << 1) | 1;
1651 /* Store in *MIN, *MAX the smallest and largest numbers representable by
1652 signed integer type TYPE. */
1655 get_signed_type_minmax (struct type *type, LONGEST *min, LONGEST *max)
1659 type = check_typedef (type);
1660 gdb_assert (TYPE_CODE (type) == TYPE_CODE_INT && !TYPE_UNSIGNED (type));
1661 gdb_assert (TYPE_LENGTH (type) <= sizeof (LONGEST));
1663 n = TYPE_LENGTH (type) * TARGET_CHAR_BIT;
1664 *min = -((ULONGEST) 1 << (n - 1));
1665 *max = ((ULONGEST) 1 << (n - 1)) - 1;
1668 /* Internal routine called by TYPE_VPTR_FIELDNO to return the value of
1669 cplus_stuff.vptr_fieldno.
1671 cplus_stuff is initialized to cplus_struct_default which does not
1672 set vptr_fieldno to -1 for portability reasons (IWBN to use C99
1673 designated initializers). We cope with that here. */
1676 internal_type_vptr_fieldno (struct type *type)
1678 type = check_typedef (type);
1679 gdb_assert (TYPE_CODE (type) == TYPE_CODE_STRUCT
1680 || TYPE_CODE (type) == TYPE_CODE_UNION);
1681 if (!HAVE_CPLUS_STRUCT (type))
1683 return TYPE_RAW_CPLUS_SPECIFIC (type)->vptr_fieldno;
1686 /* Set the value of cplus_stuff.vptr_fieldno. */
1689 set_type_vptr_fieldno (struct type *type, int fieldno)
1691 type = check_typedef (type);
1692 gdb_assert (TYPE_CODE (type) == TYPE_CODE_STRUCT
1693 || TYPE_CODE (type) == TYPE_CODE_UNION);
1694 if (!HAVE_CPLUS_STRUCT (type))
1695 ALLOCATE_CPLUS_STRUCT_TYPE (type);
1696 TYPE_RAW_CPLUS_SPECIFIC (type)->vptr_fieldno = fieldno;
1699 /* Internal routine called by TYPE_VPTR_BASETYPE to return the value of
1700 cplus_stuff.vptr_basetype. */
1703 internal_type_vptr_basetype (struct type *type)
1705 type = check_typedef (type);
1706 gdb_assert (TYPE_CODE (type) == TYPE_CODE_STRUCT
1707 || TYPE_CODE (type) == TYPE_CODE_UNION);
1708 gdb_assert (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_CPLUS_STUFF);
1709 return TYPE_RAW_CPLUS_SPECIFIC (type)->vptr_basetype;
1712 /* Set the value of cplus_stuff.vptr_basetype. */
1715 set_type_vptr_basetype (struct type *type, struct type *basetype)
1717 type = check_typedef (type);
1718 gdb_assert (TYPE_CODE (type) == TYPE_CODE_STRUCT
1719 || TYPE_CODE (type) == TYPE_CODE_UNION);
1720 if (!HAVE_CPLUS_STRUCT (type))
1721 ALLOCATE_CPLUS_STRUCT_TYPE (type);
1722 TYPE_RAW_CPLUS_SPECIFIC (type)->vptr_basetype = basetype;
1725 /* Lookup the vptr basetype/fieldno values for TYPE.
1726 If found store vptr_basetype in *BASETYPEP if non-NULL, and return
1727 vptr_fieldno. Also, if found and basetype is from the same objfile,
1729 If not found, return -1 and ignore BASETYPEP.
1730 Callers should be aware that in some cases (for example,
1731 the type or one of its baseclasses is a stub type and we are
1732 debugging a .o file, or the compiler uses DWARF-2 and is not GCC),
1733 this function will not be able to find the
1734 virtual function table pointer, and vptr_fieldno will remain -1 and
1735 vptr_basetype will remain NULL or incomplete. */
1738 get_vptr_fieldno (struct type *type, struct type **basetypep)
1740 type = check_typedef (type);
1742 if (TYPE_VPTR_FIELDNO (type) < 0)
1746 /* We must start at zero in case the first (and only) baseclass
1747 is virtual (and hence we cannot share the table pointer). */
1748 for (i = 0; i < TYPE_N_BASECLASSES (type); i++)
1750 struct type *baseclass = check_typedef (TYPE_BASECLASS (type, i));
1752 struct type *basetype;
1754 fieldno = get_vptr_fieldno (baseclass, &basetype);
1757 /* If the type comes from a different objfile we can't cache
1758 it, it may have a different lifetime. PR 2384 */
1759 if (TYPE_OBJFILE (type) == TYPE_OBJFILE (basetype))
1761 set_type_vptr_fieldno (type, fieldno);
1762 set_type_vptr_basetype (type, basetype);
1765 *basetypep = basetype;
1776 *basetypep = TYPE_VPTR_BASETYPE (type);
1777 return TYPE_VPTR_FIELDNO (type);
1782 stub_noname_complaint (void)
1784 complaint (&symfile_complaints, _("stub type has NULL name"));
1787 /* Worker for is_dynamic_type. */
1790 is_dynamic_type_internal (struct type *type, int top_level)
1792 type = check_typedef (type);
1794 /* We only want to recognize references at the outermost level. */
1795 if (top_level && TYPE_CODE (type) == TYPE_CODE_REF)
1796 type = check_typedef (TYPE_TARGET_TYPE (type));
1798 /* Types that have a dynamic TYPE_DATA_LOCATION are considered
1799 dynamic, even if the type itself is statically defined.
1800 From a user's point of view, this may appear counter-intuitive;
1801 but it makes sense in this context, because the point is to determine
1802 whether any part of the type needs to be resolved before it can
1804 if (TYPE_DATA_LOCATION (type) != NULL
1805 && (TYPE_DATA_LOCATION_KIND (type) == PROP_LOCEXPR
1806 || TYPE_DATA_LOCATION_KIND (type) == PROP_LOCLIST))
1809 switch (TYPE_CODE (type))
1811 case TYPE_CODE_RANGE:
1813 /* A range type is obviously dynamic if it has at least one
1814 dynamic bound. But also consider the range type to be
1815 dynamic when its subtype is dynamic, even if the bounds
1816 of the range type are static. It allows us to assume that
1817 the subtype of a static range type is also static. */
1818 return (!has_static_range (TYPE_RANGE_DATA (type))
1819 || is_dynamic_type_internal (TYPE_TARGET_TYPE (type), 0));
1822 case TYPE_CODE_ARRAY:
1824 gdb_assert (TYPE_NFIELDS (type) == 1);
1826 /* The array is dynamic if either the bounds are dynamic,
1827 or the elements it contains have a dynamic contents. */
1828 if (is_dynamic_type_internal (TYPE_INDEX_TYPE (type), 0))
1830 return is_dynamic_type_internal (TYPE_TARGET_TYPE (type), 0);
1833 case TYPE_CODE_STRUCT:
1834 case TYPE_CODE_UNION:
1838 for (i = 0; i < TYPE_NFIELDS (type); ++i)
1839 if (!field_is_static (&TYPE_FIELD (type, i))
1840 && is_dynamic_type_internal (TYPE_FIELD_TYPE (type, i), 0))
1849 /* See gdbtypes.h. */
1852 is_dynamic_type (struct type *type)
1854 return is_dynamic_type_internal (type, 1);
1857 static struct type *resolve_dynamic_type_internal
1858 (struct type *type, struct property_addr_info *addr_stack, int top_level);
1860 /* Given a dynamic range type (dyn_range_type) and a stack of
1861 struct property_addr_info elements, return a static version
1864 static struct type *
1865 resolve_dynamic_range (struct type *dyn_range_type,
1866 struct property_addr_info *addr_stack)
1869 struct type *static_range_type, *static_target_type;
1870 const struct dynamic_prop *prop;
1871 const struct dwarf2_locexpr_baton *baton;
1872 struct dynamic_prop low_bound, high_bound;
1874 gdb_assert (TYPE_CODE (dyn_range_type) == TYPE_CODE_RANGE);
1876 prop = &TYPE_RANGE_DATA (dyn_range_type)->low;
1877 if (dwarf2_evaluate_property (prop, addr_stack, &value))
1879 low_bound.kind = PROP_CONST;
1880 low_bound.data.const_val = value;
1884 low_bound.kind = PROP_UNDEFINED;
1885 low_bound.data.const_val = 0;
1888 prop = &TYPE_RANGE_DATA (dyn_range_type)->high;
1889 if (dwarf2_evaluate_property (prop, addr_stack, &value))
1891 high_bound.kind = PROP_CONST;
1892 high_bound.data.const_val = value;
1894 if (TYPE_RANGE_DATA (dyn_range_type)->flag_upper_bound_is_count)
1895 high_bound.data.const_val
1896 = low_bound.data.const_val + high_bound.data.const_val - 1;
1900 high_bound.kind = PROP_UNDEFINED;
1901 high_bound.data.const_val = 0;
1905 = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (dyn_range_type),
1907 static_range_type = create_range_type (copy_type (dyn_range_type),
1909 &low_bound, &high_bound);
1910 TYPE_RANGE_DATA (static_range_type)->flag_bound_evaluated = 1;
1911 return static_range_type;
1914 /* Resolves dynamic bound values of an array type TYPE to static ones.
1915 ADDR_STACK is a stack of struct property_addr_info to be used
1916 if needed during the dynamic resolution. */
1918 static struct type *
1919 resolve_dynamic_array (struct type *type,
1920 struct property_addr_info *addr_stack)
1923 struct type *elt_type;
1924 struct type *range_type;
1925 struct type *ary_dim;
1927 gdb_assert (TYPE_CODE (type) == TYPE_CODE_ARRAY);
1930 range_type = check_typedef (TYPE_INDEX_TYPE (elt_type));
1931 range_type = resolve_dynamic_range (range_type, addr_stack);
1933 ary_dim = check_typedef (TYPE_TARGET_TYPE (elt_type));
1935 if (ary_dim != NULL && TYPE_CODE (ary_dim) == TYPE_CODE_ARRAY)
1936 elt_type = resolve_dynamic_array (ary_dim, addr_stack);
1938 elt_type = TYPE_TARGET_TYPE (type);
1940 return create_array_type_with_stride (copy_type (type),
1941 elt_type, range_type,
1942 TYPE_FIELD_BITSIZE (type, 0));
1945 /* Resolve dynamic bounds of members of the union TYPE to static
1946 bounds. ADDR_STACK is a stack of struct property_addr_info
1947 to be used if needed during the dynamic resolution. */
1949 static struct type *
1950 resolve_dynamic_union (struct type *type,
1951 struct property_addr_info *addr_stack)
1953 struct type *resolved_type;
1955 unsigned int max_len = 0;
1957 gdb_assert (TYPE_CODE (type) == TYPE_CODE_UNION);
1959 resolved_type = copy_type (type);
1960 TYPE_FIELDS (resolved_type)
1961 = TYPE_ALLOC (resolved_type,
1962 TYPE_NFIELDS (resolved_type) * sizeof (struct field));
1963 memcpy (TYPE_FIELDS (resolved_type),
1965 TYPE_NFIELDS (resolved_type) * sizeof (struct field));
1966 for (i = 0; i < TYPE_NFIELDS (resolved_type); ++i)
1970 if (field_is_static (&TYPE_FIELD (type, i)))
1973 t = resolve_dynamic_type_internal (TYPE_FIELD_TYPE (resolved_type, i),
1975 TYPE_FIELD_TYPE (resolved_type, i) = t;
1976 if (TYPE_LENGTH (t) > max_len)
1977 max_len = TYPE_LENGTH (t);
1980 TYPE_LENGTH (resolved_type) = max_len;
1981 return resolved_type;
1984 /* Resolve dynamic bounds of members of the struct TYPE to static
1985 bounds. ADDR_STACK is a stack of struct property_addr_info to
1986 be used if needed during the dynamic resolution. */
1988 static struct type *
1989 resolve_dynamic_struct (struct type *type,
1990 struct property_addr_info *addr_stack)
1992 struct type *resolved_type;
1994 unsigned resolved_type_bit_length = 0;
1996 gdb_assert (TYPE_CODE (type) == TYPE_CODE_STRUCT);
1997 gdb_assert (TYPE_NFIELDS (type) > 0);
1999 resolved_type = copy_type (type);
2000 TYPE_FIELDS (resolved_type)
2001 = TYPE_ALLOC (resolved_type,
2002 TYPE_NFIELDS (resolved_type) * sizeof (struct field));
2003 memcpy (TYPE_FIELDS (resolved_type),
2005 TYPE_NFIELDS (resolved_type) * sizeof (struct field));
2006 for (i = 0; i < TYPE_NFIELDS (resolved_type); ++i)
2008 unsigned new_bit_length;
2009 struct property_addr_info pinfo;
2011 if (field_is_static (&TYPE_FIELD (type, i)))
2014 /* As we know this field is not a static field, the field's
2015 field_loc_kind should be FIELD_LOC_KIND_BITPOS. Verify
2016 this is the case, but only trigger a simple error rather
2017 than an internal error if that fails. While failing
2018 that verification indicates a bug in our code, the error
2019 is not severe enough to suggest to the user he stops
2020 his debugging session because of it. */
2021 if (TYPE_FIELD_LOC_KIND (type, i) != FIELD_LOC_KIND_BITPOS)
2022 error (_("Cannot determine struct field location"
2023 " (invalid location kind)"));
2025 pinfo.type = check_typedef (TYPE_FIELD_TYPE (type, i));
2026 pinfo.valaddr = addr_stack->valaddr;
2027 pinfo.addr = addr_stack->addr;
2028 pinfo.next = addr_stack;
2030 TYPE_FIELD_TYPE (resolved_type, i)
2031 = resolve_dynamic_type_internal (TYPE_FIELD_TYPE (resolved_type, i),
2033 gdb_assert (TYPE_FIELD_LOC_KIND (resolved_type, i)
2034 == FIELD_LOC_KIND_BITPOS);
2036 new_bit_length = TYPE_FIELD_BITPOS (resolved_type, i);
2037 if (TYPE_FIELD_BITSIZE (resolved_type, i) != 0)
2038 new_bit_length += TYPE_FIELD_BITSIZE (resolved_type, i);
2040 new_bit_length += (TYPE_LENGTH (TYPE_FIELD_TYPE (resolved_type, i))
2043 /* Normally, we would use the position and size of the last field
2044 to determine the size of the enclosing structure. But GCC seems
2045 to be encoding the position of some fields incorrectly when
2046 the struct contains a dynamic field that is not placed last.
2047 So we compute the struct size based on the field that has
2048 the highest position + size - probably the best we can do. */
2049 if (new_bit_length > resolved_type_bit_length)
2050 resolved_type_bit_length = new_bit_length;
2053 TYPE_LENGTH (resolved_type)
2054 = (resolved_type_bit_length + TARGET_CHAR_BIT - 1) / TARGET_CHAR_BIT;
2056 /* The Ada language uses this field as a cache for static fixed types: reset
2057 it as RESOLVED_TYPE must have its own static fixed type. */
2058 TYPE_TARGET_TYPE (resolved_type) = NULL;
2060 return resolved_type;
2063 /* Worker for resolved_dynamic_type. */
2065 static struct type *
2066 resolve_dynamic_type_internal (struct type *type,
2067 struct property_addr_info *addr_stack,
2070 struct type *real_type = check_typedef (type);
2071 struct type *resolved_type = type;
2072 struct dynamic_prop *prop;
2075 if (!is_dynamic_type_internal (real_type, top_level))
2078 if (TYPE_CODE (type) == TYPE_CODE_TYPEDEF)
2080 resolved_type = copy_type (type);
2081 TYPE_TARGET_TYPE (resolved_type)
2082 = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (type), addr_stack,
2087 /* Before trying to resolve TYPE, make sure it is not a stub. */
2090 switch (TYPE_CODE (type))
2094 struct property_addr_info pinfo;
2096 pinfo.type = check_typedef (TYPE_TARGET_TYPE (type));
2097 pinfo.valaddr = NULL;
2098 if (addr_stack->valaddr != NULL)
2099 pinfo.addr = extract_typed_address (addr_stack->valaddr, type);
2101 pinfo.addr = read_memory_typed_address (addr_stack->addr, type);
2102 pinfo.next = addr_stack;
2104 resolved_type = copy_type (type);
2105 TYPE_TARGET_TYPE (resolved_type)
2106 = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (type),
2111 case TYPE_CODE_ARRAY:
2112 resolved_type = resolve_dynamic_array (type, addr_stack);
2115 case TYPE_CODE_RANGE:
2116 resolved_type = resolve_dynamic_range (type, addr_stack);
2119 case TYPE_CODE_UNION:
2120 resolved_type = resolve_dynamic_union (type, addr_stack);
2123 case TYPE_CODE_STRUCT:
2124 resolved_type = resolve_dynamic_struct (type, addr_stack);
2129 /* Resolve data_location attribute. */
2130 prop = TYPE_DATA_LOCATION (resolved_type);
2131 if (prop != NULL && dwarf2_evaluate_property (prop, addr_stack, &value))
2133 TYPE_DYN_PROP_ADDR (prop) = value;
2134 TYPE_DYN_PROP_KIND (prop) = PROP_CONST;
2137 return resolved_type;
2140 /* See gdbtypes.h */
2143 resolve_dynamic_type (struct type *type, const gdb_byte *valaddr,
2146 struct property_addr_info pinfo
2147 = {check_typedef (type), valaddr, addr, NULL};
2149 return resolve_dynamic_type_internal (type, &pinfo, 1);
2152 /* See gdbtypes.h */
2154 struct dynamic_prop *
2155 get_dyn_prop (enum dynamic_prop_node_kind prop_kind, const struct type *type)
2157 struct dynamic_prop_list *node = TYPE_DYN_PROP_LIST (type);
2159 while (node != NULL)
2161 if (node->prop_kind == prop_kind)
2168 /* See gdbtypes.h */
2171 add_dyn_prop (enum dynamic_prop_node_kind prop_kind, struct dynamic_prop prop,
2172 struct type *type, struct objfile *objfile)
2174 struct dynamic_prop_list *temp;
2176 gdb_assert (TYPE_OBJFILE_OWNED (type));
2178 temp = obstack_alloc (&objfile->objfile_obstack,
2179 sizeof (struct dynamic_prop_list));
2180 temp->prop_kind = prop_kind;
2182 temp->next = TYPE_DYN_PROP_LIST (type);
2184 TYPE_DYN_PROP_LIST (type) = temp;
2188 /* Find the real type of TYPE. This function returns the real type,
2189 after removing all layers of typedefs, and completing opaque or stub
2190 types. Completion changes the TYPE argument, but stripping of
2193 Instance flags (e.g. const/volatile) are preserved as typedefs are
2194 stripped. If necessary a new qualified form of the underlying type
2197 NOTE: This will return a typedef if TYPE_TARGET_TYPE for the typedef has
2198 not been computed and we're either in the middle of reading symbols, or
2199 there was no name for the typedef in the debug info.
2201 NOTE: Lookup of opaque types can throw errors for invalid symbol files.
2202 QUITs in the symbol reading code can also throw.
2203 Thus this function can throw an exception.
2205 If TYPE is a TYPE_CODE_TYPEDEF, its length is updated to the length of
2208 If this is a stubbed struct (i.e. declared as struct foo *), see if
2209 we can find a full definition in some other file. If so, copy this
2210 definition, so we can use it in future. There used to be a comment
2211 (but not any code) that if we don't find a full definition, we'd
2212 set a flag so we don't spend time in the future checking the same
2213 type. That would be a mistake, though--we might load in more
2214 symbols which contain a full definition for the type. */
2217 check_typedef (struct type *type)
2219 struct type *orig_type = type;
2220 /* While we're removing typedefs, we don't want to lose qualifiers.
2221 E.g., const/volatile. */
2222 int instance_flags = TYPE_INSTANCE_FLAGS (type);
2226 while (TYPE_CODE (type) == TYPE_CODE_TYPEDEF)
2228 if (!TYPE_TARGET_TYPE (type))
2233 /* It is dangerous to call lookup_symbol if we are currently
2234 reading a symtab. Infinite recursion is one danger. */
2235 if (currently_reading_symtab)
2236 return make_qualified_type (type, instance_flags, NULL);
2238 name = type_name_no_tag (type);
2239 /* FIXME: shouldn't we separately check the TYPE_NAME and
2240 the TYPE_TAG_NAME, and look in STRUCT_DOMAIN and/or
2241 VAR_DOMAIN as appropriate? (this code was written before
2242 TYPE_NAME and TYPE_TAG_NAME were separate). */
2245 stub_noname_complaint ();
2246 return make_qualified_type (type, instance_flags, NULL);
2248 sym = lookup_symbol (name, 0, STRUCT_DOMAIN, 0);
2250 TYPE_TARGET_TYPE (type) = SYMBOL_TYPE (sym);
2251 else /* TYPE_CODE_UNDEF */
2252 TYPE_TARGET_TYPE (type) = alloc_type_arch (get_type_arch (type));
2254 type = TYPE_TARGET_TYPE (type);
2256 /* Preserve the instance flags as we traverse down the typedef chain.
2258 Handling address spaces/classes is nasty, what do we do if there's a
2260 E.g., what if an outer typedef marks the type as class_1 and an inner
2261 typedef marks the type as class_2?
2262 This is the wrong place to do such error checking. We leave it to
2263 the code that created the typedef in the first place to flag the
2264 error. We just pick the outer address space (akin to letting the
2265 outer cast in a chain of casting win), instead of assuming
2266 "it can't happen". */
2268 const int ALL_SPACES = (TYPE_INSTANCE_FLAG_CODE_SPACE
2269 | TYPE_INSTANCE_FLAG_DATA_SPACE);
2270 const int ALL_CLASSES = TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL;
2271 int new_instance_flags = TYPE_INSTANCE_FLAGS (type);
2273 /* Treat code vs data spaces and address classes separately. */
2274 if ((instance_flags & ALL_SPACES) != 0)
2275 new_instance_flags &= ~ALL_SPACES;
2276 if ((instance_flags & ALL_CLASSES) != 0)
2277 new_instance_flags &= ~ALL_CLASSES;
2279 instance_flags |= new_instance_flags;
2283 /* If this is a struct/class/union with no fields, then check
2284 whether a full definition exists somewhere else. This is for
2285 systems where a type definition with no fields is issued for such
2286 types, instead of identifying them as stub types in the first
2289 if (TYPE_IS_OPAQUE (type)
2290 && opaque_type_resolution
2291 && !currently_reading_symtab)
2293 const char *name = type_name_no_tag (type);
2294 struct type *newtype;
2298 stub_noname_complaint ();
2299 return make_qualified_type (type, instance_flags, NULL);
2301 newtype = lookup_transparent_type (name);
2305 /* If the resolved type and the stub are in the same
2306 objfile, then replace the stub type with the real deal.
2307 But if they're in separate objfiles, leave the stub
2308 alone; we'll just look up the transparent type every time
2309 we call check_typedef. We can't create pointers between
2310 types allocated to different objfiles, since they may
2311 have different lifetimes. Trying to copy NEWTYPE over to
2312 TYPE's objfile is pointless, too, since you'll have to
2313 move over any other types NEWTYPE refers to, which could
2314 be an unbounded amount of stuff. */
2315 if (TYPE_OBJFILE (newtype) == TYPE_OBJFILE (type))
2316 type = make_qualified_type (newtype,
2317 TYPE_INSTANCE_FLAGS (type),
2323 /* Otherwise, rely on the stub flag being set for opaque/stubbed
2325 else if (TYPE_STUB (type) && !currently_reading_symtab)
2327 const char *name = type_name_no_tag (type);
2328 /* FIXME: shouldn't we separately check the TYPE_NAME and the
2329 TYPE_TAG_NAME, and look in STRUCT_DOMAIN and/or VAR_DOMAIN
2330 as appropriate? (this code was written before TYPE_NAME and
2331 TYPE_TAG_NAME were separate). */
2336 stub_noname_complaint ();
2337 return make_qualified_type (type, instance_flags, NULL);
2339 sym = lookup_symbol (name, 0, STRUCT_DOMAIN, 0);
2342 /* Same as above for opaque types, we can replace the stub
2343 with the complete type only if they are in the same
2345 if (TYPE_OBJFILE (SYMBOL_TYPE(sym)) == TYPE_OBJFILE (type))
2346 type = make_qualified_type (SYMBOL_TYPE (sym),
2347 TYPE_INSTANCE_FLAGS (type),
2350 type = SYMBOL_TYPE (sym);
2354 if (TYPE_TARGET_STUB (type))
2356 struct type *range_type;
2357 struct type *target_type = check_typedef (TYPE_TARGET_TYPE (type));
2359 if (TYPE_STUB (target_type) || TYPE_TARGET_STUB (target_type))
2361 /* Nothing we can do. */
2363 else if (TYPE_CODE (type) == TYPE_CODE_RANGE)
2365 TYPE_LENGTH (type) = TYPE_LENGTH (target_type);
2366 TYPE_TARGET_STUB (type) = 0;
2370 type = make_qualified_type (type, instance_flags, NULL);
2372 /* Cache TYPE_LENGTH for future use. */
2373 TYPE_LENGTH (orig_type) = TYPE_LENGTH (type);
2378 /* Parse a type expression in the string [P..P+LENGTH). If an error
2379 occurs, silently return a void type. */
2381 static struct type *
2382 safe_parse_type (struct gdbarch *gdbarch, char *p, int length)
2384 struct ui_file *saved_gdb_stderr;
2385 struct type *type = NULL; /* Initialize to keep gcc happy. */
2387 /* Suppress error messages. */
2388 saved_gdb_stderr = gdb_stderr;
2389 gdb_stderr = ui_file_new ();
2391 /* Call parse_and_eval_type() without fear of longjmp()s. */
2394 type = parse_and_eval_type (p, length);
2396 CATCH (except, RETURN_MASK_ERROR)
2398 type = builtin_type (gdbarch)->builtin_void;
2402 /* Stop suppressing error messages. */
2403 ui_file_delete (gdb_stderr);
2404 gdb_stderr = saved_gdb_stderr;
2409 /* Ugly hack to convert method stubs into method types.
2411 He ain't kiddin'. This demangles the name of the method into a
2412 string including argument types, parses out each argument type,
2413 generates a string casting a zero to that type, evaluates the
2414 string, and stuffs the resulting type into an argtype vector!!!
2415 Then it knows the type of the whole function (including argument
2416 types for overloading), which info used to be in the stab's but was
2417 removed to hack back the space required for them. */
2420 check_stub_method (struct type *type, int method_id, int signature_id)
2422 struct gdbarch *gdbarch = get_type_arch (type);
2424 char *mangled_name = gdb_mangle_name (type, method_id, signature_id);
2425 char *demangled_name = gdb_demangle (mangled_name,
2426 DMGL_PARAMS | DMGL_ANSI);
2427 char *argtypetext, *p;
2428 int depth = 0, argcount = 1;
2429 struct field *argtypes;
2432 /* Make sure we got back a function string that we can use. */
2434 p = strchr (demangled_name, '(');
2438 if (demangled_name == NULL || p == NULL)
2439 error (_("Internal: Cannot demangle mangled name `%s'."),
2442 /* Now, read in the parameters that define this type. */
2447 if (*p == '(' || *p == '<')
2451 else if (*p == ')' || *p == '>')
2455 else if (*p == ',' && depth == 0)
2463 /* If we read one argument and it was ``void'', don't count it. */
2464 if (startswith (argtypetext, "(void)"))
2467 /* We need one extra slot, for the THIS pointer. */
2469 argtypes = (struct field *)
2470 TYPE_ALLOC (type, (argcount + 1) * sizeof (struct field));
2473 /* Add THIS pointer for non-static methods. */
2474 f = TYPE_FN_FIELDLIST1 (type, method_id);
2475 if (TYPE_FN_FIELD_STATIC_P (f, signature_id))
2479 argtypes[0].type = lookup_pointer_type (type);
2483 if (*p != ')') /* () means no args, skip while. */
2488 if (depth <= 0 && (*p == ',' || *p == ')'))
2490 /* Avoid parsing of ellipsis, they will be handled below.
2491 Also avoid ``void'' as above. */
2492 if (strncmp (argtypetext, "...", p - argtypetext) != 0
2493 && strncmp (argtypetext, "void", p - argtypetext) != 0)
2495 argtypes[argcount].type =
2496 safe_parse_type (gdbarch, argtypetext, p - argtypetext);
2499 argtypetext = p + 1;
2502 if (*p == '(' || *p == '<')
2506 else if (*p == ')' || *p == '>')
2515 TYPE_FN_FIELD_PHYSNAME (f, signature_id) = mangled_name;
2517 /* Now update the old "stub" type into a real type. */
2518 mtype = TYPE_FN_FIELD_TYPE (f, signature_id);
2519 /* MTYPE may currently be a function (TYPE_CODE_FUNC).
2520 We want a method (TYPE_CODE_METHOD). */
2521 smash_to_method_type (mtype, type, TYPE_TARGET_TYPE (mtype),
2522 argtypes, argcount, p[-2] == '.');
2523 TYPE_STUB (mtype) = 0;
2524 TYPE_FN_FIELD_STUB (f, signature_id) = 0;
2526 xfree (demangled_name);
2529 /* This is the external interface to check_stub_method, above. This
2530 function unstubs all of the signatures for TYPE's METHOD_ID method
2531 name. After calling this function TYPE_FN_FIELD_STUB will be
2532 cleared for each signature and TYPE_FN_FIELDLIST_NAME will be
2535 This function unfortunately can not die until stabs do. */
2538 check_stub_method_group (struct type *type, int method_id)
2540 int len = TYPE_FN_FIELDLIST_LENGTH (type, method_id);
2541 struct fn_field *f = TYPE_FN_FIELDLIST1 (type, method_id);
2542 int j, found_stub = 0;
2544 for (j = 0; j < len; j++)
2545 if (TYPE_FN_FIELD_STUB (f, j))
2548 check_stub_method (type, method_id, j);
2551 /* GNU v3 methods with incorrect names were corrected when we read
2552 in type information, because it was cheaper to do it then. The
2553 only GNU v2 methods with incorrect method names are operators and
2554 destructors; destructors were also corrected when we read in type
2557 Therefore the only thing we need to handle here are v2 operator
2559 if (found_stub && !startswith (TYPE_FN_FIELD_PHYSNAME (f, 0), "_Z"))
2562 char dem_opname[256];
2564 ret = cplus_demangle_opname (TYPE_FN_FIELDLIST_NAME (type,
2566 dem_opname, DMGL_ANSI);
2568 ret = cplus_demangle_opname (TYPE_FN_FIELDLIST_NAME (type,
2572 TYPE_FN_FIELDLIST_NAME (type, method_id) = xstrdup (dem_opname);
2576 /* Ensure it is in .rodata (if available) by workarounding GCC PR 44690. */
2577 const struct cplus_struct_type cplus_struct_default = { };
2580 allocate_cplus_struct_type (struct type *type)
2582 if (HAVE_CPLUS_STRUCT (type))
2583 /* Structure was already allocated. Nothing more to do. */
2586 TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_CPLUS_STUFF;
2587 TYPE_RAW_CPLUS_SPECIFIC (type) = (struct cplus_struct_type *)
2588 TYPE_ALLOC (type, sizeof (struct cplus_struct_type));
2589 *(TYPE_RAW_CPLUS_SPECIFIC (type)) = cplus_struct_default;
2590 set_type_vptr_fieldno (type, -1);
2593 const struct gnat_aux_type gnat_aux_default =
2596 /* Set the TYPE's type-specific kind to TYPE_SPECIFIC_GNAT_STUFF,
2597 and allocate the associated gnat-specific data. The gnat-specific
2598 data is also initialized to gnat_aux_default. */
2601 allocate_gnat_aux_type (struct type *type)
2603 TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_GNAT_STUFF;
2604 TYPE_GNAT_SPECIFIC (type) = (struct gnat_aux_type *)
2605 TYPE_ALLOC (type, sizeof (struct gnat_aux_type));
2606 *(TYPE_GNAT_SPECIFIC (type)) = gnat_aux_default;
2609 /* Helper function to initialize the standard scalar types.
2611 If NAME is non-NULL, then it is used to initialize the type name.
2612 Note that NAME is not copied; it is required to have a lifetime at
2613 least as long as OBJFILE. */
2616 init_type (enum type_code code, int length, int flags,
2617 const char *name, struct objfile *objfile)
2621 type = alloc_type (objfile);
2622 TYPE_CODE (type) = code;
2623 TYPE_LENGTH (type) = length;
2625 gdb_assert (!(flags & (TYPE_FLAG_MIN - 1)));
2626 if (flags & TYPE_FLAG_UNSIGNED)
2627 TYPE_UNSIGNED (type) = 1;
2628 if (flags & TYPE_FLAG_NOSIGN)
2629 TYPE_NOSIGN (type) = 1;
2630 if (flags & TYPE_FLAG_STUB)
2631 TYPE_STUB (type) = 1;
2632 if (flags & TYPE_FLAG_TARGET_STUB)
2633 TYPE_TARGET_STUB (type) = 1;
2634 if (flags & TYPE_FLAG_STATIC)
2635 TYPE_STATIC (type) = 1;
2636 if (flags & TYPE_FLAG_PROTOTYPED)
2637 TYPE_PROTOTYPED (type) = 1;
2638 if (flags & TYPE_FLAG_INCOMPLETE)
2639 TYPE_INCOMPLETE (type) = 1;
2640 if (flags & TYPE_FLAG_VARARGS)
2641 TYPE_VARARGS (type) = 1;
2642 if (flags & TYPE_FLAG_VECTOR)
2643 TYPE_VECTOR (type) = 1;
2644 if (flags & TYPE_FLAG_STUB_SUPPORTED)
2645 TYPE_STUB_SUPPORTED (type) = 1;
2646 if (flags & TYPE_FLAG_FIXED_INSTANCE)
2647 TYPE_FIXED_INSTANCE (type) = 1;
2648 if (flags & TYPE_FLAG_GNU_IFUNC)
2649 TYPE_GNU_IFUNC (type) = 1;
2651 TYPE_NAME (type) = name;
2655 if (name && strcmp (name, "char") == 0)
2656 TYPE_NOSIGN (type) = 1;
2660 case TYPE_CODE_STRUCT:
2661 case TYPE_CODE_UNION:
2662 case TYPE_CODE_NAMESPACE:
2663 INIT_CPLUS_SPECIFIC (type);
2666 TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_FLOATFORMAT;
2668 case TYPE_CODE_FUNC:
2669 INIT_FUNC_SPECIFIC (type);
2675 /* Queries on types. */
2678 can_dereference (struct type *t)
2680 /* FIXME: Should we return true for references as well as
2682 t = check_typedef (t);
2685 && TYPE_CODE (t) == TYPE_CODE_PTR
2686 && TYPE_CODE (TYPE_TARGET_TYPE (t)) != TYPE_CODE_VOID);
2690 is_integral_type (struct type *t)
2692 t = check_typedef (t);
2695 && ((TYPE_CODE (t) == TYPE_CODE_INT)
2696 || (TYPE_CODE (t) == TYPE_CODE_ENUM)
2697 || (TYPE_CODE (t) == TYPE_CODE_FLAGS)
2698 || (TYPE_CODE (t) == TYPE_CODE_CHAR)
2699 || (TYPE_CODE (t) == TYPE_CODE_RANGE)
2700 || (TYPE_CODE (t) == TYPE_CODE_BOOL)));
2703 /* Return true if TYPE is scalar. */
2706 is_scalar_type (struct type *type)
2708 type = check_typedef (type);
2710 switch (TYPE_CODE (type))
2712 case TYPE_CODE_ARRAY:
2713 case TYPE_CODE_STRUCT:
2714 case TYPE_CODE_UNION:
2716 case TYPE_CODE_STRING:
2723 /* Return true if T is scalar, or a composite type which in practice has
2724 the memory layout of a scalar type. E.g., an array or struct with only
2725 one scalar element inside it, or a union with only scalar elements. */
2728 is_scalar_type_recursive (struct type *t)
2730 t = check_typedef (t);
2732 if (is_scalar_type (t))
2734 /* Are we dealing with an array or string of known dimensions? */
2735 else if ((TYPE_CODE (t) == TYPE_CODE_ARRAY
2736 || TYPE_CODE (t) == TYPE_CODE_STRING) && TYPE_NFIELDS (t) == 1
2737 && TYPE_CODE (TYPE_INDEX_TYPE (t)) == TYPE_CODE_RANGE)
2739 LONGEST low_bound, high_bound;
2740 struct type *elt_type = check_typedef (TYPE_TARGET_TYPE (t));
2742 get_discrete_bounds (TYPE_INDEX_TYPE (t), &low_bound, &high_bound);
2744 return high_bound == low_bound && is_scalar_type_recursive (elt_type);
2746 /* Are we dealing with a struct with one element? */
2747 else if (TYPE_CODE (t) == TYPE_CODE_STRUCT && TYPE_NFIELDS (t) == 1)
2748 return is_scalar_type_recursive (TYPE_FIELD_TYPE (t, 0));
2749 else if (TYPE_CODE (t) == TYPE_CODE_UNION)
2751 int i, n = TYPE_NFIELDS (t);
2753 /* If all elements of the union are scalar, then the union is scalar. */
2754 for (i = 0; i < n; i++)
2755 if (!is_scalar_type_recursive (TYPE_FIELD_TYPE (t, i)))
2764 /* Return true is T is a class or a union. False otherwise. */
2767 class_or_union_p (const struct type *t)
2769 return (TYPE_CODE (t) == TYPE_CODE_STRUCT
2770 || TYPE_CODE (t) == TYPE_CODE_UNION);
2773 /* A helper function which returns true if types A and B represent the
2774 "same" class type. This is true if the types have the same main
2775 type, or the same name. */
2778 class_types_same_p (const struct type *a, const struct type *b)
2780 return (TYPE_MAIN_TYPE (a) == TYPE_MAIN_TYPE (b)
2781 || (TYPE_NAME (a) && TYPE_NAME (b)
2782 && !strcmp (TYPE_NAME (a), TYPE_NAME (b))));
2785 /* If BASE is an ancestor of DCLASS return the distance between them.
2786 otherwise return -1;
2790 class B: public A {};
2791 class C: public B {};
2794 distance_to_ancestor (A, A, 0) = 0
2795 distance_to_ancestor (A, B, 0) = 1
2796 distance_to_ancestor (A, C, 0) = 2
2797 distance_to_ancestor (A, D, 0) = 3
2799 If PUBLIC is 1 then only public ancestors are considered,
2800 and the function returns the distance only if BASE is a public ancestor
2804 distance_to_ancestor (A, D, 1) = -1. */
2807 distance_to_ancestor (struct type *base, struct type *dclass, int is_public)
2812 base = check_typedef (base);
2813 dclass = check_typedef (dclass);
2815 if (class_types_same_p (base, dclass))
2818 for (i = 0; i < TYPE_N_BASECLASSES (dclass); i++)
2820 if (is_public && ! BASETYPE_VIA_PUBLIC (dclass, i))
2823 d = distance_to_ancestor (base, TYPE_BASECLASS (dclass, i), is_public);
2831 /* Check whether BASE is an ancestor or base class or DCLASS
2832 Return 1 if so, and 0 if not.
2833 Note: If BASE and DCLASS are of the same type, this function
2834 will return 1. So for some class A, is_ancestor (A, A) will
2838 is_ancestor (struct type *base, struct type *dclass)
2840 return distance_to_ancestor (base, dclass, 0) >= 0;
2843 /* Like is_ancestor, but only returns true when BASE is a public
2844 ancestor of DCLASS. */
2847 is_public_ancestor (struct type *base, struct type *dclass)
2849 return distance_to_ancestor (base, dclass, 1) >= 0;
2852 /* A helper function for is_unique_ancestor. */
2855 is_unique_ancestor_worker (struct type *base, struct type *dclass,
2857 const gdb_byte *valaddr, int embedded_offset,
2858 CORE_ADDR address, struct value *val)
2862 base = check_typedef (base);
2863 dclass = check_typedef (dclass);
2865 for (i = 0; i < TYPE_N_BASECLASSES (dclass) && count < 2; ++i)
2870 iter = check_typedef (TYPE_BASECLASS (dclass, i));
2872 this_offset = baseclass_offset (dclass, i, valaddr, embedded_offset,
2875 if (class_types_same_p (base, iter))
2877 /* If this is the first subclass, set *OFFSET and set count
2878 to 1. Otherwise, if this is at the same offset as
2879 previous instances, do nothing. Otherwise, increment
2883 *offset = this_offset;
2886 else if (this_offset == *offset)
2894 count += is_unique_ancestor_worker (base, iter, offset,
2896 embedded_offset + this_offset,
2903 /* Like is_ancestor, but only returns true if BASE is a unique base
2904 class of the type of VAL. */
2907 is_unique_ancestor (struct type *base, struct value *val)
2911 return is_unique_ancestor_worker (base, value_type (val), &offset,
2912 value_contents_for_printing (val),
2913 value_embedded_offset (val),
2914 value_address (val), val) == 1;
2918 /* Overload resolution. */
2920 /* Return the sum of the rank of A with the rank of B. */
2923 sum_ranks (struct rank a, struct rank b)
2926 c.rank = a.rank + b.rank;
2927 c.subrank = a.subrank + b.subrank;
2931 /* Compare rank A and B and return:
2933 1 if a is better than b
2934 -1 if b is better than a. */
2937 compare_ranks (struct rank a, struct rank b)
2939 if (a.rank == b.rank)
2941 if (a.subrank == b.subrank)
2943 if (a.subrank < b.subrank)
2945 if (a.subrank > b.subrank)
2949 if (a.rank < b.rank)
2952 /* a.rank > b.rank */
2956 /* Functions for overload resolution begin here. */
2958 /* Compare two badness vectors A and B and return the result.
2959 0 => A and B are identical
2960 1 => A and B are incomparable
2961 2 => A is better than B
2962 3 => A is worse than B */
2965 compare_badness (struct badness_vector *a, struct badness_vector *b)
2969 short found_pos = 0; /* any positives in c? */
2970 short found_neg = 0; /* any negatives in c? */
2972 /* differing lengths => incomparable */
2973 if (a->length != b->length)
2976 /* Subtract b from a */
2977 for (i = 0; i < a->length; i++)
2979 tmp = compare_ranks (b->rank[i], a->rank[i]);
2989 return 1; /* incomparable */
2991 return 3; /* A > B */
2997 return 2; /* A < B */
2999 return 0; /* A == B */
3003 /* Rank a function by comparing its parameter types (PARMS, length
3004 NPARMS), to the types of an argument list (ARGS, length NARGS).
3005 Return a pointer to a badness vector. This has NARGS + 1
3008 struct badness_vector *
3009 rank_function (struct type **parms, int nparms,
3010 struct value **args, int nargs)
3013 struct badness_vector *bv;
3014 int min_len = nparms < nargs ? nparms : nargs;
3016 bv = xmalloc (sizeof (struct badness_vector));
3017 bv->length = nargs + 1; /* add 1 for the length-match rank. */
3018 bv->rank = XNEWVEC (struct rank, nargs + 1);
3020 /* First compare the lengths of the supplied lists.
3021 If there is a mismatch, set it to a high value. */
3023 /* pai/1997-06-03 FIXME: when we have debug info about default
3024 arguments and ellipsis parameter lists, we should consider those
3025 and rank the length-match more finely. */
3027 LENGTH_MATCH (bv) = (nargs != nparms)
3028 ? LENGTH_MISMATCH_BADNESS
3029 : EXACT_MATCH_BADNESS;
3031 /* Now rank all the parameters of the candidate function. */
3032 for (i = 1; i <= min_len; i++)
3033 bv->rank[i] = rank_one_type (parms[i - 1], value_type (args[i - 1]),
3036 /* If more arguments than parameters, add dummy entries. */
3037 for (i = min_len + 1; i <= nargs; i++)
3038 bv->rank[i] = TOO_FEW_PARAMS_BADNESS;
3043 /* Compare the names of two integer types, assuming that any sign
3044 qualifiers have been checked already. We do it this way because
3045 there may be an "int" in the name of one of the types. */
3048 integer_types_same_name_p (const char *first, const char *second)
3050 int first_p, second_p;
3052 /* If both are shorts, return 1; if neither is a short, keep
3054 first_p = (strstr (first, "short") != NULL);
3055 second_p = (strstr (second, "short") != NULL);
3056 if (first_p && second_p)
3058 if (first_p || second_p)
3061 /* Likewise for long. */
3062 first_p = (strstr (first, "long") != NULL);
3063 second_p = (strstr (second, "long") != NULL);
3064 if (first_p && second_p)
3066 if (first_p || second_p)
3069 /* Likewise for char. */
3070 first_p = (strstr (first, "char") != NULL);
3071 second_p = (strstr (second, "char") != NULL);
3072 if (first_p && second_p)
3074 if (first_p || second_p)
3077 /* They must both be ints. */
3081 /* Compares type A to type B returns 1 if the represent the same type
3085 types_equal (struct type *a, struct type *b)
3087 /* Identical type pointers. */
3088 /* However, this still doesn't catch all cases of same type for b
3089 and a. The reason is that builtin types are different from
3090 the same ones constructed from the object. */
3094 /* Resolve typedefs */
3095 if (TYPE_CODE (a) == TYPE_CODE_TYPEDEF)
3096 a = check_typedef (a);
3097 if (TYPE_CODE (b) == TYPE_CODE_TYPEDEF)
3098 b = check_typedef (b);
3100 /* If after resolving typedefs a and b are not of the same type
3101 code then they are not equal. */
3102 if (TYPE_CODE (a) != TYPE_CODE (b))
3105 /* If a and b are both pointers types or both reference types then
3106 they are equal of the same type iff the objects they refer to are
3107 of the same type. */
3108 if (TYPE_CODE (a) == TYPE_CODE_PTR
3109 || TYPE_CODE (a) == TYPE_CODE_REF)
3110 return types_equal (TYPE_TARGET_TYPE (a),
3111 TYPE_TARGET_TYPE (b));
3113 /* Well, damnit, if the names are exactly the same, I'll say they
3114 are exactly the same. This happens when we generate method
3115 stubs. The types won't point to the same address, but they
3116 really are the same. */
3118 if (TYPE_NAME (a) && TYPE_NAME (b)
3119 && strcmp (TYPE_NAME (a), TYPE_NAME (b)) == 0)
3122 /* Check if identical after resolving typedefs. */
3126 /* Two function types are equal if their argument and return types
3128 if (TYPE_CODE (a) == TYPE_CODE_FUNC)
3132 if (TYPE_NFIELDS (a) != TYPE_NFIELDS (b))
3135 if (!types_equal (TYPE_TARGET_TYPE (a), TYPE_TARGET_TYPE (b)))
3138 for (i = 0; i < TYPE_NFIELDS (a); ++i)
3139 if (!types_equal (TYPE_FIELD_TYPE (a, i), TYPE_FIELD_TYPE (b, i)))
3148 /* Deep comparison of types. */
3150 /* An entry in the type-equality bcache. */
3152 typedef struct type_equality_entry
3154 struct type *type1, *type2;
3155 } type_equality_entry_d;
3157 DEF_VEC_O (type_equality_entry_d);
3159 /* A helper function to compare two strings. Returns 1 if they are
3160 the same, 0 otherwise. Handles NULLs properly. */
3163 compare_maybe_null_strings (const char *s, const char *t)
3165 if (s == NULL && t != NULL)
3167 else if (s != NULL && t == NULL)
3169 else if (s == NULL && t== NULL)
3171 return strcmp (s, t) == 0;
3174 /* A helper function for check_types_worklist that checks two types for
3175 "deep" equality. Returns non-zero if the types are considered the
3176 same, zero otherwise. */
3179 check_types_equal (struct type *type1, struct type *type2,
3180 VEC (type_equality_entry_d) **worklist)
3182 type1 = check_typedef (type1);
3183 type2 = check_typedef (type2);
3188 if (TYPE_CODE (type1) != TYPE_CODE (type2)
3189 || TYPE_LENGTH (type1) != TYPE_LENGTH (type2)
3190 || TYPE_UNSIGNED (type1) != TYPE_UNSIGNED (type2)
3191 || TYPE_NOSIGN (type1) != TYPE_NOSIGN (type2)
3192 || TYPE_VARARGS (type1) != TYPE_VARARGS (type2)
3193 || TYPE_VECTOR (type1) != TYPE_VECTOR (type2)
3194 || TYPE_NOTTEXT (type1) != TYPE_NOTTEXT (type2)
3195 || TYPE_INSTANCE_FLAGS (type1) != TYPE_INSTANCE_FLAGS (type2)
3196 || TYPE_NFIELDS (type1) != TYPE_NFIELDS (type2))
3199 if (!compare_maybe_null_strings (TYPE_TAG_NAME (type1),
3200 TYPE_TAG_NAME (type2)))
3202 if (!compare_maybe_null_strings (TYPE_NAME (type1), TYPE_NAME (type2)))
3205 if (TYPE_CODE (type1) == TYPE_CODE_RANGE)
3207 if (memcmp (TYPE_RANGE_DATA (type1), TYPE_RANGE_DATA (type2),
3208 sizeof (*TYPE_RANGE_DATA (type1))) != 0)
3215 for (i = 0; i < TYPE_NFIELDS (type1); ++i)
3217 const struct field *field1 = &TYPE_FIELD (type1, i);
3218 const struct field *field2 = &TYPE_FIELD (type2, i);
3219 struct type_equality_entry entry;
3221 if (FIELD_ARTIFICIAL (*field1) != FIELD_ARTIFICIAL (*field2)
3222 || FIELD_BITSIZE (*field1) != FIELD_BITSIZE (*field2)
3223 || FIELD_LOC_KIND (*field1) != FIELD_LOC_KIND (*field2))
3225 if (!compare_maybe_null_strings (FIELD_NAME (*field1),
3226 FIELD_NAME (*field2)))
3228 switch (FIELD_LOC_KIND (*field1))
3230 case FIELD_LOC_KIND_BITPOS:
3231 if (FIELD_BITPOS (*field1) != FIELD_BITPOS (*field2))
3234 case FIELD_LOC_KIND_ENUMVAL:
3235 if (FIELD_ENUMVAL (*field1) != FIELD_ENUMVAL (*field2))
3238 case FIELD_LOC_KIND_PHYSADDR:
3239 if (FIELD_STATIC_PHYSADDR (*field1)
3240 != FIELD_STATIC_PHYSADDR (*field2))
3243 case FIELD_LOC_KIND_PHYSNAME:
3244 if (!compare_maybe_null_strings (FIELD_STATIC_PHYSNAME (*field1),
3245 FIELD_STATIC_PHYSNAME (*field2)))
3248 case FIELD_LOC_KIND_DWARF_BLOCK:
3250 struct dwarf2_locexpr_baton *block1, *block2;
3252 block1 = FIELD_DWARF_BLOCK (*field1);
3253 block2 = FIELD_DWARF_BLOCK (*field2);
3254 if (block1->per_cu != block2->per_cu
3255 || block1->size != block2->size
3256 || memcmp (block1->data, block2->data, block1->size) != 0)
3261 internal_error (__FILE__, __LINE__, _("Unsupported field kind "
3262 "%d by check_types_equal"),
3263 FIELD_LOC_KIND (*field1));
3266 entry.type1 = FIELD_TYPE (*field1);
3267 entry.type2 = FIELD_TYPE (*field2);
3268 VEC_safe_push (type_equality_entry_d, *worklist, &entry);
3272 if (TYPE_TARGET_TYPE (type1) != NULL)
3274 struct type_equality_entry entry;
3276 if (TYPE_TARGET_TYPE (type2) == NULL)
3279 entry.type1 = TYPE_TARGET_TYPE (type1);
3280 entry.type2 = TYPE_TARGET_TYPE (type2);
3281 VEC_safe_push (type_equality_entry_d, *worklist, &entry);
3283 else if (TYPE_TARGET_TYPE (type2) != NULL)
3289 /* Check types on a worklist for equality. Returns zero if any pair
3290 is not equal, non-zero if they are all considered equal. */
3293 check_types_worklist (VEC (type_equality_entry_d) **worklist,
3294 struct bcache *cache)
3296 while (!VEC_empty (type_equality_entry_d, *worklist))
3298 struct type_equality_entry entry;
3301 entry = *VEC_last (type_equality_entry_d, *worklist);
3302 VEC_pop (type_equality_entry_d, *worklist);
3304 /* If the type pair has already been visited, we know it is
3306 bcache_full (&entry, sizeof (entry), cache, &added);
3310 if (check_types_equal (entry.type1, entry.type2, worklist) == 0)
3317 /* Return non-zero if types TYPE1 and TYPE2 are equal, as determined by a
3318 "deep comparison". Otherwise return zero. */
3321 types_deeply_equal (struct type *type1, struct type *type2)
3323 struct gdb_exception except = exception_none;
3325 struct bcache *cache;
3326 VEC (type_equality_entry_d) *worklist = NULL;
3327 struct type_equality_entry entry;
3329 gdb_assert (type1 != NULL && type2 != NULL);
3331 /* Early exit for the simple case. */
3335 cache = bcache_xmalloc (NULL, NULL);
3337 entry.type1 = type1;
3338 entry.type2 = type2;
3339 VEC_safe_push (type_equality_entry_d, worklist, &entry);
3341 /* check_types_worklist calls several nested helper functions, some
3342 of which can raise a GDB exception, so we just check and rethrow
3343 here. If there is a GDB exception, a comparison is not capable
3344 (or trusted), so exit. */
3347 result = check_types_worklist (&worklist, cache);
3349 CATCH (ex, RETURN_MASK_ALL)
3355 bcache_xfree (cache);
3356 VEC_free (type_equality_entry_d, worklist);
3358 /* Rethrow if there was a problem. */
3359 if (except.reason < 0)
3360 throw_exception (except);
3365 /* Compare one type (PARM) for compatibility with another (ARG).
3366 * PARM is intended to be the parameter type of a function; and
3367 * ARG is the supplied argument's type. This function tests if
3368 * the latter can be converted to the former.
3369 * VALUE is the argument's value or NULL if none (or called recursively)
3371 * Return 0 if they are identical types;
3372 * Otherwise, return an integer which corresponds to how compatible
3373 * PARM is to ARG. The higher the return value, the worse the match.
3374 * Generally the "bad" conversions are all uniformly assigned a 100. */
3377 rank_one_type (struct type *parm, struct type *arg, struct value *value)
3379 struct rank rank = {0,0};
3381 if (types_equal (parm, arg))
3382 return EXACT_MATCH_BADNESS;
3384 /* Resolve typedefs */
3385 if (TYPE_CODE (parm) == TYPE_CODE_TYPEDEF)
3386 parm = check_typedef (parm);
3387 if (TYPE_CODE (arg) == TYPE_CODE_TYPEDEF)
3388 arg = check_typedef (arg);
3390 /* See through references, since we can almost make non-references
3392 if (TYPE_CODE (arg) == TYPE_CODE_REF)
3393 return (sum_ranks (rank_one_type (parm, TYPE_TARGET_TYPE (arg), NULL),
3394 REFERENCE_CONVERSION_BADNESS));
3395 if (TYPE_CODE (parm) == TYPE_CODE_REF)
3396 return (sum_ranks (rank_one_type (TYPE_TARGET_TYPE (parm), arg, NULL),
3397 REFERENCE_CONVERSION_BADNESS));
3399 /* Debugging only. */
3400 fprintf_filtered (gdb_stderr,
3401 "------ Arg is %s [%d], parm is %s [%d]\n",
3402 TYPE_NAME (arg), TYPE_CODE (arg),
3403 TYPE_NAME (parm), TYPE_CODE (parm));
3405 /* x -> y means arg of type x being supplied for parameter of type y. */
3407 switch (TYPE_CODE (parm))
3410 switch (TYPE_CODE (arg))
3414 /* Allowed pointer conversions are:
3415 (a) pointer to void-pointer conversion. */
3416 if (TYPE_CODE (TYPE_TARGET_TYPE (parm)) == TYPE_CODE_VOID)
3417 return VOID_PTR_CONVERSION_BADNESS;
3419 /* (b) pointer to ancestor-pointer conversion. */
3420 rank.subrank = distance_to_ancestor (TYPE_TARGET_TYPE (parm),
3421 TYPE_TARGET_TYPE (arg),
3423 if (rank.subrank >= 0)
3424 return sum_ranks (BASE_PTR_CONVERSION_BADNESS, rank);
3426 return INCOMPATIBLE_TYPE_BADNESS;
3427 case TYPE_CODE_ARRAY:
3428 if (types_equal (TYPE_TARGET_TYPE (parm),
3429 TYPE_TARGET_TYPE (arg)))
3430 return EXACT_MATCH_BADNESS;
3431 return INCOMPATIBLE_TYPE_BADNESS;
3432 case TYPE_CODE_FUNC:
3433 return rank_one_type (TYPE_TARGET_TYPE (parm), arg, NULL);
3435 if (value != NULL && TYPE_CODE (value_type (value)) == TYPE_CODE_INT)
3437 if (value_as_long (value) == 0)
3439 /* Null pointer conversion: allow it to be cast to a pointer.
3440 [4.10.1 of C++ standard draft n3290] */
3441 return NULL_POINTER_CONVERSION_BADNESS;
3445 /* If type checking is disabled, allow the conversion. */
3446 if (!strict_type_checking)
3447 return NS_INTEGER_POINTER_CONVERSION_BADNESS;
3451 case TYPE_CODE_ENUM:
3452 case TYPE_CODE_FLAGS:
3453 case TYPE_CODE_CHAR:
3454 case TYPE_CODE_RANGE:
3455 case TYPE_CODE_BOOL:
3457 return INCOMPATIBLE_TYPE_BADNESS;
3459 case TYPE_CODE_ARRAY:
3460 switch (TYPE_CODE (arg))
3463 case TYPE_CODE_ARRAY:
3464 return rank_one_type (TYPE_TARGET_TYPE (parm),
3465 TYPE_TARGET_TYPE (arg), NULL);
3467 return INCOMPATIBLE_TYPE_BADNESS;
3469 case TYPE_CODE_FUNC:
3470 switch (TYPE_CODE (arg))
3472 case TYPE_CODE_PTR: /* funcptr -> func */
3473 return rank_one_type (parm, TYPE_TARGET_TYPE (arg), NULL);
3475 return INCOMPATIBLE_TYPE_BADNESS;
3478 switch (TYPE_CODE (arg))
3481 if (TYPE_LENGTH (arg) == TYPE_LENGTH (parm))
3483 /* Deal with signed, unsigned, and plain chars and
3484 signed and unsigned ints. */
3485 if (TYPE_NOSIGN (parm))
3487 /* This case only for character types. */
3488 if (TYPE_NOSIGN (arg))
3489 return EXACT_MATCH_BADNESS; /* plain char -> plain char */
3490 else /* signed/unsigned char -> plain char */
3491 return INTEGER_CONVERSION_BADNESS;
3493 else if (TYPE_UNSIGNED (parm))
3495 if (TYPE_UNSIGNED (arg))
3497 /* unsigned int -> unsigned int, or
3498 unsigned long -> unsigned long */
3499 if (integer_types_same_name_p (TYPE_NAME (parm),
3501 return EXACT_MATCH_BADNESS;
3502 else if (integer_types_same_name_p (TYPE_NAME (arg),
3504 && integer_types_same_name_p (TYPE_NAME (parm),
3506 /* unsigned int -> unsigned long */
3507 return INTEGER_PROMOTION_BADNESS;
3509 /* unsigned long -> unsigned int */
3510 return INTEGER_CONVERSION_BADNESS;
3514 if (integer_types_same_name_p (TYPE_NAME (arg),
3516 && integer_types_same_name_p (TYPE_NAME (parm),
3518 /* signed long -> unsigned int */
3519 return INTEGER_CONVERSION_BADNESS;
3521 /* signed int/long -> unsigned int/long */
3522 return INTEGER_CONVERSION_BADNESS;
3525 else if (!TYPE_NOSIGN (arg) && !TYPE_UNSIGNED (arg))
3527 if (integer_types_same_name_p (TYPE_NAME (parm),
3529 return EXACT_MATCH_BADNESS;
3530 else if (integer_types_same_name_p (TYPE_NAME (arg),
3532 && integer_types_same_name_p (TYPE_NAME (parm),
3534 return INTEGER_PROMOTION_BADNESS;
3536 return INTEGER_CONVERSION_BADNESS;
3539 return INTEGER_CONVERSION_BADNESS;
3541 else if (TYPE_LENGTH (arg) < TYPE_LENGTH (parm))
3542 return INTEGER_PROMOTION_BADNESS;
3544 return INTEGER_CONVERSION_BADNESS;
3545 case TYPE_CODE_ENUM:
3546 case TYPE_CODE_FLAGS:
3547 case TYPE_CODE_CHAR:
3548 case TYPE_CODE_RANGE:
3549 case TYPE_CODE_BOOL:
3550 if (TYPE_DECLARED_CLASS (arg))
3551 return INCOMPATIBLE_TYPE_BADNESS;
3552 return INTEGER_PROMOTION_BADNESS;
3554 return INT_FLOAT_CONVERSION_BADNESS;
3556 return NS_POINTER_CONVERSION_BADNESS;
3558 return INCOMPATIBLE_TYPE_BADNESS;
3561 case TYPE_CODE_ENUM:
3562 switch (TYPE_CODE (arg))
3565 case TYPE_CODE_CHAR:
3566 case TYPE_CODE_RANGE:
3567 case TYPE_CODE_BOOL:
3568 case TYPE_CODE_ENUM:
3569 if (TYPE_DECLARED_CLASS (parm) || TYPE_DECLARED_CLASS (arg))
3570 return INCOMPATIBLE_TYPE_BADNESS;
3571 return INTEGER_CONVERSION_BADNESS;
3573 return INT_FLOAT_CONVERSION_BADNESS;
3575 return INCOMPATIBLE_TYPE_BADNESS;
3578 case TYPE_CODE_CHAR:
3579 switch (TYPE_CODE (arg))
3581 case TYPE_CODE_RANGE:
3582 case TYPE_CODE_BOOL:
3583 case TYPE_CODE_ENUM:
3584 if (TYPE_DECLARED_CLASS (arg))
3585 return INCOMPATIBLE_TYPE_BADNESS;
3586 return INTEGER_CONVERSION_BADNESS;
3588 return INT_FLOAT_CONVERSION_BADNESS;
3590 if (TYPE_LENGTH (arg) > TYPE_LENGTH (parm))
3591 return INTEGER_CONVERSION_BADNESS;
3592 else if (TYPE_LENGTH (arg) < TYPE_LENGTH (parm))
3593 return INTEGER_PROMOTION_BADNESS;
3594 /* >>> !! else fall through !! <<< */
3595 case TYPE_CODE_CHAR:
3596 /* Deal with signed, unsigned, and plain chars for C++ and
3597 with int cases falling through from previous case. */
3598 if (TYPE_NOSIGN (parm))
3600 if (TYPE_NOSIGN (arg))
3601 return EXACT_MATCH_BADNESS;
3603 return INTEGER_CONVERSION_BADNESS;
3605 else if (TYPE_UNSIGNED (parm))
3607 if (TYPE_UNSIGNED (arg))
3608 return EXACT_MATCH_BADNESS;
3610 return INTEGER_PROMOTION_BADNESS;
3612 else if (!TYPE_NOSIGN (arg) && !TYPE_UNSIGNED (arg))
3613 return EXACT_MATCH_BADNESS;
3615 return INTEGER_CONVERSION_BADNESS;
3617 return INCOMPATIBLE_TYPE_BADNESS;
3620 case TYPE_CODE_RANGE:
3621 switch (TYPE_CODE (arg))
3624 case TYPE_CODE_CHAR:
3625 case TYPE_CODE_RANGE:
3626 case TYPE_CODE_BOOL:
3627 case TYPE_CODE_ENUM:
3628 return INTEGER_CONVERSION_BADNESS;
3630 return INT_FLOAT_CONVERSION_BADNESS;
3632 return INCOMPATIBLE_TYPE_BADNESS;
3635 case TYPE_CODE_BOOL:
3636 switch (TYPE_CODE (arg))
3638 /* n3290 draft, section 4.12.1 (conv.bool):
3640 "A prvalue of arithmetic, unscoped enumeration, pointer, or
3641 pointer to member type can be converted to a prvalue of type
3642 bool. A zero value, null pointer value, or null member pointer
3643 value is converted to false; any other value is converted to
3644 true. A prvalue of type std::nullptr_t can be converted to a
3645 prvalue of type bool; the resulting value is false." */
3647 case TYPE_CODE_CHAR:
3648 case TYPE_CODE_ENUM:
3650 case TYPE_CODE_MEMBERPTR:
3652 return BOOL_CONVERSION_BADNESS;
3653 case TYPE_CODE_RANGE:
3654 return INCOMPATIBLE_TYPE_BADNESS;
3655 case TYPE_CODE_BOOL:
3656 return EXACT_MATCH_BADNESS;
3658 return INCOMPATIBLE_TYPE_BADNESS;
3662 switch (TYPE_CODE (arg))
3665 if (TYPE_LENGTH (arg) < TYPE_LENGTH (parm))
3666 return FLOAT_PROMOTION_BADNESS;
3667 else if (TYPE_LENGTH (arg) == TYPE_LENGTH (parm))
3668 return EXACT_MATCH_BADNESS;
3670 return FLOAT_CONVERSION_BADNESS;
3672 case TYPE_CODE_BOOL:
3673 case TYPE_CODE_ENUM:
3674 case TYPE_CODE_RANGE:
3675 case TYPE_CODE_CHAR:
3676 return INT_FLOAT_CONVERSION_BADNESS;
3678 return INCOMPATIBLE_TYPE_BADNESS;
3681 case TYPE_CODE_COMPLEX:
3682 switch (TYPE_CODE (arg))
3683 { /* Strictly not needed for C++, but... */
3685 return FLOAT_PROMOTION_BADNESS;
3686 case TYPE_CODE_COMPLEX:
3687 return EXACT_MATCH_BADNESS;
3689 return INCOMPATIBLE_TYPE_BADNESS;
3692 case TYPE_CODE_STRUCT:
3693 switch (TYPE_CODE (arg))
3695 case TYPE_CODE_STRUCT:
3696 /* Check for derivation */
3697 rank.subrank = distance_to_ancestor (parm, arg, 0);
3698 if (rank.subrank >= 0)
3699 return sum_ranks (BASE_CONVERSION_BADNESS, rank);
3700 /* else fall through */
3702 return INCOMPATIBLE_TYPE_BADNESS;
3705 case TYPE_CODE_UNION:
3706 switch (TYPE_CODE (arg))
3708 case TYPE_CODE_UNION:
3710 return INCOMPATIBLE_TYPE_BADNESS;
3713 case TYPE_CODE_MEMBERPTR:
3714 switch (TYPE_CODE (arg))
3717 return INCOMPATIBLE_TYPE_BADNESS;
3720 case TYPE_CODE_METHOD:
3721 switch (TYPE_CODE (arg))
3725 return INCOMPATIBLE_TYPE_BADNESS;
3729 switch (TYPE_CODE (arg))
3733 return INCOMPATIBLE_TYPE_BADNESS;
3738 switch (TYPE_CODE (arg))
3742 return rank_one_type (TYPE_FIELD_TYPE (parm, 0),
3743 TYPE_FIELD_TYPE (arg, 0), NULL);
3745 return INCOMPATIBLE_TYPE_BADNESS;
3748 case TYPE_CODE_VOID:
3750 return INCOMPATIBLE_TYPE_BADNESS;
3751 } /* switch (TYPE_CODE (arg)) */
3754 /* End of functions for overload resolution. */
3756 /* Routines to pretty-print types. */
3759 print_bit_vector (B_TYPE *bits, int nbits)
3763 for (bitno = 0; bitno < nbits; bitno++)
3765 if ((bitno % 8) == 0)
3767 puts_filtered (" ");
3769 if (B_TST (bits, bitno))
3770 printf_filtered (("1"));
3772 printf_filtered (("0"));
3776 /* Note the first arg should be the "this" pointer, we may not want to
3777 include it since we may get into a infinitely recursive
3781 print_args (struct field *args, int nargs, int spaces)
3787 for (i = 0; i < nargs; i++)
3789 printfi_filtered (spaces, "[%d] name '%s'\n", i,
3790 args[i].name != NULL ? args[i].name : "<NULL>");
3791 recursive_dump_type (args[i].type, spaces + 2);
3797 field_is_static (struct field *f)
3799 /* "static" fields are the fields whose location is not relative
3800 to the address of the enclosing struct. It would be nice to
3801 have a dedicated flag that would be set for static fields when
3802 the type is being created. But in practice, checking the field
3803 loc_kind should give us an accurate answer. */
3804 return (FIELD_LOC_KIND (*f) == FIELD_LOC_KIND_PHYSNAME
3805 || FIELD_LOC_KIND (*f) == FIELD_LOC_KIND_PHYSADDR);
3809 dump_fn_fieldlists (struct type *type, int spaces)
3815 printfi_filtered (spaces, "fn_fieldlists ");
3816 gdb_print_host_address (TYPE_FN_FIELDLISTS (type), gdb_stdout);
3817 printf_filtered ("\n");
3818 for (method_idx = 0; method_idx < TYPE_NFN_FIELDS (type); method_idx++)
3820 f = TYPE_FN_FIELDLIST1 (type, method_idx);
3821 printfi_filtered (spaces + 2, "[%d] name '%s' (",
3823 TYPE_FN_FIELDLIST_NAME (type, method_idx));
3824 gdb_print_host_address (TYPE_FN_FIELDLIST_NAME (type, method_idx),
3826 printf_filtered (_(") length %d\n"),
3827 TYPE_FN_FIELDLIST_LENGTH (type, method_idx));
3828 for (overload_idx = 0;
3829 overload_idx < TYPE_FN_FIELDLIST_LENGTH (type, method_idx);
3832 printfi_filtered (spaces + 4, "[%d] physname '%s' (",
3834 TYPE_FN_FIELD_PHYSNAME (f, overload_idx));
3835 gdb_print_host_address (TYPE_FN_FIELD_PHYSNAME (f, overload_idx),
3837 printf_filtered (")\n");
3838 printfi_filtered (spaces + 8, "type ");
3839 gdb_print_host_address (TYPE_FN_FIELD_TYPE (f, overload_idx),
3841 printf_filtered ("\n");
3843 recursive_dump_type (TYPE_FN_FIELD_TYPE (f, overload_idx),
3846 printfi_filtered (spaces + 8, "args ");
3847 gdb_print_host_address (TYPE_FN_FIELD_ARGS (f, overload_idx),
3849 printf_filtered ("\n");
3850 print_args (TYPE_FN_FIELD_ARGS (f, overload_idx),
3851 TYPE_NFIELDS (TYPE_FN_FIELD_TYPE (f, overload_idx)),
3853 printfi_filtered (spaces + 8, "fcontext ");
3854 gdb_print_host_address (TYPE_FN_FIELD_FCONTEXT (f, overload_idx),
3856 printf_filtered ("\n");
3858 printfi_filtered (spaces + 8, "is_const %d\n",
3859 TYPE_FN_FIELD_CONST (f, overload_idx));
3860 printfi_filtered (spaces + 8, "is_volatile %d\n",
3861 TYPE_FN_FIELD_VOLATILE (f, overload_idx));
3862 printfi_filtered (spaces + 8, "is_private %d\n",
3863 TYPE_FN_FIELD_PRIVATE (f, overload_idx));
3864 printfi_filtered (spaces + 8, "is_protected %d\n",
3865 TYPE_FN_FIELD_PROTECTED (f, overload_idx));
3866 printfi_filtered (spaces + 8, "is_stub %d\n",
3867 TYPE_FN_FIELD_STUB (f, overload_idx));
3868 printfi_filtered (spaces + 8, "voffset %u\n",
3869 TYPE_FN_FIELD_VOFFSET (f, overload_idx));
3875 print_cplus_stuff (struct type *type, int spaces)
3877 printfi_filtered (spaces, "vptr_fieldno %d\n", TYPE_VPTR_FIELDNO (type));
3878 printfi_filtered (spaces, "vptr_basetype ");
3879 gdb_print_host_address (TYPE_VPTR_BASETYPE (type), gdb_stdout);
3880 puts_filtered ("\n");
3881 if (TYPE_VPTR_BASETYPE (type) != NULL)
3882 recursive_dump_type (TYPE_VPTR_BASETYPE (type), spaces + 2);
3884 printfi_filtered (spaces, "n_baseclasses %d\n",
3885 TYPE_N_BASECLASSES (type));
3886 printfi_filtered (spaces, "nfn_fields %d\n",
3887 TYPE_NFN_FIELDS (type));
3888 if (TYPE_N_BASECLASSES (type) > 0)
3890 printfi_filtered (spaces, "virtual_field_bits (%d bits at *",
3891 TYPE_N_BASECLASSES (type));
3892 gdb_print_host_address (TYPE_FIELD_VIRTUAL_BITS (type),
3894 printf_filtered (")");
3896 print_bit_vector (TYPE_FIELD_VIRTUAL_BITS (type),
3897 TYPE_N_BASECLASSES (type));
3898 puts_filtered ("\n");
3900 if (TYPE_NFIELDS (type) > 0)
3902 if (TYPE_FIELD_PRIVATE_BITS (type) != NULL)
3904 printfi_filtered (spaces,
3905 "private_field_bits (%d bits at *",
3906 TYPE_NFIELDS (type));
3907 gdb_print_host_address (TYPE_FIELD_PRIVATE_BITS (type),
3909 printf_filtered (")");
3910 print_bit_vector (TYPE_FIELD_PRIVATE_BITS (type),
3911 TYPE_NFIELDS (type));
3912 puts_filtered ("\n");
3914 if (TYPE_FIELD_PROTECTED_BITS (type) != NULL)
3916 printfi_filtered (spaces,
3917 "protected_field_bits (%d bits at *",
3918 TYPE_NFIELDS (type));
3919 gdb_print_host_address (TYPE_FIELD_PROTECTED_BITS (type),
3921 printf_filtered (")");
3922 print_bit_vector (TYPE_FIELD_PROTECTED_BITS (type),
3923 TYPE_NFIELDS (type));
3924 puts_filtered ("\n");
3927 if (TYPE_NFN_FIELDS (type) > 0)
3929 dump_fn_fieldlists (type, spaces);
3933 /* Print the contents of the TYPE's type_specific union, assuming that
3934 its type-specific kind is TYPE_SPECIFIC_GNAT_STUFF. */
3937 print_gnat_stuff (struct type *type, int spaces)
3939 struct type *descriptive_type = TYPE_DESCRIPTIVE_TYPE (type);
3941 if (descriptive_type == NULL)
3942 printfi_filtered (spaces + 2, "no descriptive type\n");
3945 printfi_filtered (spaces + 2, "descriptive type\n");
3946 recursive_dump_type (descriptive_type, spaces + 4);
3950 static struct obstack dont_print_type_obstack;
3953 recursive_dump_type (struct type *type, int spaces)
3958 obstack_begin (&dont_print_type_obstack, 0);
3960 if (TYPE_NFIELDS (type) > 0
3961 || (HAVE_CPLUS_STRUCT (type) && TYPE_NFN_FIELDS (type) > 0))
3963 struct type **first_dont_print
3964 = (struct type **) obstack_base (&dont_print_type_obstack);
3966 int i = (struct type **)
3967 obstack_next_free (&dont_print_type_obstack) - first_dont_print;
3971 if (type == first_dont_print[i])
3973 printfi_filtered (spaces, "type node ");
3974 gdb_print_host_address (type, gdb_stdout);
3975 printf_filtered (_(" <same as already seen type>\n"));
3980 obstack_ptr_grow (&dont_print_type_obstack, type);
3983 printfi_filtered (spaces, "type node ");
3984 gdb_print_host_address (type, gdb_stdout);
3985 printf_filtered ("\n");
3986 printfi_filtered (spaces, "name '%s' (",
3987 TYPE_NAME (type) ? TYPE_NAME (type) : "<NULL>");
3988 gdb_print_host_address (TYPE_NAME (type), gdb_stdout);
3989 printf_filtered (")\n");
3990 printfi_filtered (spaces, "tagname '%s' (",
3991 TYPE_TAG_NAME (type) ? TYPE_TAG_NAME (type) : "<NULL>");
3992 gdb_print_host_address (TYPE_TAG_NAME (type), gdb_stdout);
3993 printf_filtered (")\n");
3994 printfi_filtered (spaces, "code 0x%x ", TYPE_CODE (type));
3995 switch (TYPE_CODE (type))
3997 case TYPE_CODE_UNDEF:
3998 printf_filtered ("(TYPE_CODE_UNDEF)");
4001 printf_filtered ("(TYPE_CODE_PTR)");
4003 case TYPE_CODE_ARRAY:
4004 printf_filtered ("(TYPE_CODE_ARRAY)");
4006 case TYPE_CODE_STRUCT:
4007 printf_filtered ("(TYPE_CODE_STRUCT)");
4009 case TYPE_CODE_UNION:
4010 printf_filtered ("(TYPE_CODE_UNION)");
4012 case TYPE_CODE_ENUM:
4013 printf_filtered ("(TYPE_CODE_ENUM)");
4015 case TYPE_CODE_FLAGS:
4016 printf_filtered ("(TYPE_CODE_FLAGS)");
4018 case TYPE_CODE_FUNC:
4019 printf_filtered ("(TYPE_CODE_FUNC)");
4022 printf_filtered ("(TYPE_CODE_INT)");
4025 printf_filtered ("(TYPE_CODE_FLT)");
4027 case TYPE_CODE_VOID:
4028 printf_filtered ("(TYPE_CODE_VOID)");
4031 printf_filtered ("(TYPE_CODE_SET)");
4033 case TYPE_CODE_RANGE:
4034 printf_filtered ("(TYPE_CODE_RANGE)");
4036 case TYPE_CODE_STRING:
4037 printf_filtered ("(TYPE_CODE_STRING)");
4039 case TYPE_CODE_ERROR:
4040 printf_filtered ("(TYPE_CODE_ERROR)");
4042 case TYPE_CODE_MEMBERPTR:
4043 printf_filtered ("(TYPE_CODE_MEMBERPTR)");
4045 case TYPE_CODE_METHODPTR:
4046 printf_filtered ("(TYPE_CODE_METHODPTR)");
4048 case TYPE_CODE_METHOD:
4049 printf_filtered ("(TYPE_CODE_METHOD)");
4052 printf_filtered ("(TYPE_CODE_REF)");
4054 case TYPE_CODE_CHAR:
4055 printf_filtered ("(TYPE_CODE_CHAR)");
4057 case TYPE_CODE_BOOL:
4058 printf_filtered ("(TYPE_CODE_BOOL)");
4060 case TYPE_CODE_COMPLEX:
4061 printf_filtered ("(TYPE_CODE_COMPLEX)");
4063 case TYPE_CODE_TYPEDEF:
4064 printf_filtered ("(TYPE_CODE_TYPEDEF)");
4066 case TYPE_CODE_NAMESPACE:
4067 printf_filtered ("(TYPE_CODE_NAMESPACE)");
4070 printf_filtered ("(UNKNOWN TYPE CODE)");
4073 puts_filtered ("\n");
4074 printfi_filtered (spaces, "length %d\n", TYPE_LENGTH (type));
4075 if (TYPE_OBJFILE_OWNED (type))
4077 printfi_filtered (spaces, "objfile ");
4078 gdb_print_host_address (TYPE_OWNER (type).objfile, gdb_stdout);
4082 printfi_filtered (spaces, "gdbarch ");
4083 gdb_print_host_address (TYPE_OWNER (type).gdbarch, gdb_stdout);
4085 printf_filtered ("\n");
4086 printfi_filtered (spaces, "target_type ");
4087 gdb_print_host_address (TYPE_TARGET_TYPE (type), gdb_stdout);
4088 printf_filtered ("\n");
4089 if (TYPE_TARGET_TYPE (type) != NULL)
4091 recursive_dump_type (TYPE_TARGET_TYPE (type), spaces + 2);
4093 printfi_filtered (spaces, "pointer_type ");
4094 gdb_print_host_address (TYPE_POINTER_TYPE (type), gdb_stdout);
4095 printf_filtered ("\n");
4096 printfi_filtered (spaces, "reference_type ");
4097 gdb_print_host_address (TYPE_REFERENCE_TYPE (type), gdb_stdout);
4098 printf_filtered ("\n");
4099 printfi_filtered (spaces, "type_chain ");
4100 gdb_print_host_address (TYPE_CHAIN (type), gdb_stdout);
4101 printf_filtered ("\n");
4102 printfi_filtered (spaces, "instance_flags 0x%x",
4103 TYPE_INSTANCE_FLAGS (type));
4104 if (TYPE_CONST (type))
4106 puts_filtered (" TYPE_FLAG_CONST");
4108 if (TYPE_VOLATILE (type))
4110 puts_filtered (" TYPE_FLAG_VOLATILE");
4112 if (TYPE_CODE_SPACE (type))
4114 puts_filtered (" TYPE_FLAG_CODE_SPACE");
4116 if (TYPE_DATA_SPACE (type))
4118 puts_filtered (" TYPE_FLAG_DATA_SPACE");
4120 if (TYPE_ADDRESS_CLASS_1 (type))
4122 puts_filtered (" TYPE_FLAG_ADDRESS_CLASS_1");
4124 if (TYPE_ADDRESS_CLASS_2 (type))
4126 puts_filtered (" TYPE_FLAG_ADDRESS_CLASS_2");
4128 if (TYPE_RESTRICT (type))
4130 puts_filtered (" TYPE_FLAG_RESTRICT");
4132 if (TYPE_ATOMIC (type))
4134 puts_filtered (" TYPE_FLAG_ATOMIC");
4136 puts_filtered ("\n");
4138 printfi_filtered (spaces, "flags");
4139 if (TYPE_UNSIGNED (type))
4141 puts_filtered (" TYPE_FLAG_UNSIGNED");
4143 if (TYPE_NOSIGN (type))
4145 puts_filtered (" TYPE_FLAG_NOSIGN");
4147 if (TYPE_STUB (type))
4149 puts_filtered (" TYPE_FLAG_STUB");
4151 if (TYPE_TARGET_STUB (type))
4153 puts_filtered (" TYPE_FLAG_TARGET_STUB");
4155 if (TYPE_STATIC (type))
4157 puts_filtered (" TYPE_FLAG_STATIC");
4159 if (TYPE_PROTOTYPED (type))
4161 puts_filtered (" TYPE_FLAG_PROTOTYPED");
4163 if (TYPE_INCOMPLETE (type))
4165 puts_filtered (" TYPE_FLAG_INCOMPLETE");
4167 if (TYPE_VARARGS (type))
4169 puts_filtered (" TYPE_FLAG_VARARGS");
4171 /* This is used for things like AltiVec registers on ppc. Gcc emits
4172 an attribute for the array type, which tells whether or not we
4173 have a vector, instead of a regular array. */
4174 if (TYPE_VECTOR (type))
4176 puts_filtered (" TYPE_FLAG_VECTOR");
4178 if (TYPE_FIXED_INSTANCE (type))
4180 puts_filtered (" TYPE_FIXED_INSTANCE");
4182 if (TYPE_STUB_SUPPORTED (type))
4184 puts_filtered (" TYPE_STUB_SUPPORTED");
4186 if (TYPE_NOTTEXT (type))
4188 puts_filtered (" TYPE_NOTTEXT");
4190 puts_filtered ("\n");
4191 printfi_filtered (spaces, "nfields %d ", TYPE_NFIELDS (type));
4192 gdb_print_host_address (TYPE_FIELDS (type), gdb_stdout);
4193 puts_filtered ("\n");
4194 for (idx = 0; idx < TYPE_NFIELDS (type); idx++)
4196 if (TYPE_CODE (type) == TYPE_CODE_ENUM)
4197 printfi_filtered (spaces + 2,
4198 "[%d] enumval %s type ",
4199 idx, plongest (TYPE_FIELD_ENUMVAL (type, idx)));
4201 printfi_filtered (spaces + 2,
4202 "[%d] bitpos %d bitsize %d type ",
4203 idx, TYPE_FIELD_BITPOS (type, idx),
4204 TYPE_FIELD_BITSIZE (type, idx));
4205 gdb_print_host_address (TYPE_FIELD_TYPE (type, idx), gdb_stdout);
4206 printf_filtered (" name '%s' (",
4207 TYPE_FIELD_NAME (type, idx) != NULL
4208 ? TYPE_FIELD_NAME (type, idx)
4210 gdb_print_host_address (TYPE_FIELD_NAME (type, idx), gdb_stdout);
4211 printf_filtered (")\n");
4212 if (TYPE_FIELD_TYPE (type, idx) != NULL)
4214 recursive_dump_type (TYPE_FIELD_TYPE (type, idx), spaces + 4);
4217 if (TYPE_CODE (type) == TYPE_CODE_RANGE)
4219 printfi_filtered (spaces, "low %s%s high %s%s\n",
4220 plongest (TYPE_LOW_BOUND (type)),
4221 TYPE_LOW_BOUND_UNDEFINED (type) ? " (undefined)" : "",
4222 plongest (TYPE_HIGH_BOUND (type)),
4223 TYPE_HIGH_BOUND_UNDEFINED (type)
4224 ? " (undefined)" : "");
4227 switch (TYPE_SPECIFIC_FIELD (type))
4229 case TYPE_SPECIFIC_CPLUS_STUFF:
4230 printfi_filtered (spaces, "cplus_stuff ");
4231 gdb_print_host_address (TYPE_CPLUS_SPECIFIC (type),
4233 puts_filtered ("\n");
4234 print_cplus_stuff (type, spaces);
4237 case TYPE_SPECIFIC_GNAT_STUFF:
4238 printfi_filtered (spaces, "gnat_stuff ");
4239 gdb_print_host_address (TYPE_GNAT_SPECIFIC (type), gdb_stdout);
4240 puts_filtered ("\n");
4241 print_gnat_stuff (type, spaces);
4244 case TYPE_SPECIFIC_FLOATFORMAT:
4245 printfi_filtered (spaces, "floatformat ");
4246 if (TYPE_FLOATFORMAT (type) == NULL)
4247 puts_filtered ("(null)");
4250 puts_filtered ("{ ");
4251 if (TYPE_FLOATFORMAT (type)[0] == NULL
4252 || TYPE_FLOATFORMAT (type)[0]->name == NULL)
4253 puts_filtered ("(null)");
4255 puts_filtered (TYPE_FLOATFORMAT (type)[0]->name);
4257 puts_filtered (", ");
4258 if (TYPE_FLOATFORMAT (type)[1] == NULL
4259 || TYPE_FLOATFORMAT (type)[1]->name == NULL)
4260 puts_filtered ("(null)");
4262 puts_filtered (TYPE_FLOATFORMAT (type)[1]->name);
4264 puts_filtered (" }");
4266 puts_filtered ("\n");
4269 case TYPE_SPECIFIC_FUNC:
4270 printfi_filtered (spaces, "calling_convention %d\n",
4271 TYPE_CALLING_CONVENTION (type));
4272 /* tail_call_list is not printed. */
4275 case TYPE_SPECIFIC_SELF_TYPE:
4276 printfi_filtered (spaces, "self_type ");
4277 gdb_print_host_address (TYPE_SELF_TYPE (type), gdb_stdout);
4278 puts_filtered ("\n");
4283 obstack_free (&dont_print_type_obstack, NULL);
4286 /* Trivial helpers for the libiberty hash table, for mapping one
4291 struct type *old, *newobj;
4295 type_pair_hash (const void *item)
4297 const struct type_pair *pair = item;
4299 return htab_hash_pointer (pair->old);
4303 type_pair_eq (const void *item_lhs, const void *item_rhs)
4305 const struct type_pair *lhs = item_lhs, *rhs = item_rhs;
4307 return lhs->old == rhs->old;
4310 /* Allocate the hash table used by copy_type_recursive to walk
4311 types without duplicates. We use OBJFILE's obstack, because
4312 OBJFILE is about to be deleted. */
4315 create_copied_types_hash (struct objfile *objfile)
4317 return htab_create_alloc_ex (1, type_pair_hash, type_pair_eq,
4318 NULL, &objfile->objfile_obstack,
4319 hashtab_obstack_allocate,
4320 dummy_obstack_deallocate);
4323 /* Recursively copy (deep copy) a dynamic attribute list of a type. */
4325 static struct dynamic_prop_list *
4326 copy_dynamic_prop_list (struct obstack *objfile_obstack,
4327 struct dynamic_prop_list *list)
4329 struct dynamic_prop_list *copy = list;
4330 struct dynamic_prop_list **node_ptr = ©
4332 while (*node_ptr != NULL)
4334 struct dynamic_prop_list *node_copy;
4336 node_copy = obstack_copy (objfile_obstack, *node_ptr,
4337 sizeof (struct dynamic_prop_list));
4338 node_copy->prop = (*node_ptr)->prop;
4339 *node_ptr = node_copy;
4341 node_ptr = &node_copy->next;
4347 /* Recursively copy (deep copy) TYPE, if it is associated with
4348 OBJFILE. Return a new type allocated using malloc, a saved type if
4349 we have already visited TYPE (using COPIED_TYPES), or TYPE if it is
4350 not associated with OBJFILE. */
4353 copy_type_recursive (struct objfile *objfile,
4355 htab_t copied_types)
4357 struct type_pair *stored, pair;
4359 struct type *new_type;
4361 if (! TYPE_OBJFILE_OWNED (type))
4364 /* This type shouldn't be pointing to any types in other objfiles;
4365 if it did, the type might disappear unexpectedly. */
4366 gdb_assert (TYPE_OBJFILE (type) == objfile);
4369 slot = htab_find_slot (copied_types, &pair, INSERT);
4371 return ((struct type_pair *) *slot)->newobj;
4373 new_type = alloc_type_arch (get_type_arch (type));
4375 /* We must add the new type to the hash table immediately, in case
4376 we encounter this type again during a recursive call below. */
4378 = obstack_alloc (&objfile->objfile_obstack, sizeof (struct type_pair));
4380 stored->newobj = new_type;
4383 /* Copy the common fields of types. For the main type, we simply
4384 copy the entire thing and then update specific fields as needed. */
4385 *TYPE_MAIN_TYPE (new_type) = *TYPE_MAIN_TYPE (type);
4386 TYPE_OBJFILE_OWNED (new_type) = 0;
4387 TYPE_OWNER (new_type).gdbarch = get_type_arch (type);
4389 if (TYPE_NAME (type))
4390 TYPE_NAME (new_type) = xstrdup (TYPE_NAME (type));
4391 if (TYPE_TAG_NAME (type))
4392 TYPE_TAG_NAME (new_type) = xstrdup (TYPE_TAG_NAME (type));
4394 TYPE_INSTANCE_FLAGS (new_type) = TYPE_INSTANCE_FLAGS (type);
4395 TYPE_LENGTH (new_type) = TYPE_LENGTH (type);
4397 /* Copy the fields. */
4398 if (TYPE_NFIELDS (type))
4402 nfields = TYPE_NFIELDS (type);
4403 TYPE_FIELDS (new_type) = XCNEWVEC (struct field, nfields);
4404 for (i = 0; i < nfields; i++)
4406 TYPE_FIELD_ARTIFICIAL (new_type, i) =
4407 TYPE_FIELD_ARTIFICIAL (type, i);
4408 TYPE_FIELD_BITSIZE (new_type, i) = TYPE_FIELD_BITSIZE (type, i);
4409 if (TYPE_FIELD_TYPE (type, i))
4410 TYPE_FIELD_TYPE (new_type, i)
4411 = copy_type_recursive (objfile, TYPE_FIELD_TYPE (type, i),
4413 if (TYPE_FIELD_NAME (type, i))
4414 TYPE_FIELD_NAME (new_type, i) =
4415 xstrdup (TYPE_FIELD_NAME (type, i));
4416 switch (TYPE_FIELD_LOC_KIND (type, i))
4418 case FIELD_LOC_KIND_BITPOS:
4419 SET_FIELD_BITPOS (TYPE_FIELD (new_type, i),
4420 TYPE_FIELD_BITPOS (type, i));
4422 case FIELD_LOC_KIND_ENUMVAL:
4423 SET_FIELD_ENUMVAL (TYPE_FIELD (new_type, i),
4424 TYPE_FIELD_ENUMVAL (type, i));
4426 case FIELD_LOC_KIND_PHYSADDR:
4427 SET_FIELD_PHYSADDR (TYPE_FIELD (new_type, i),
4428 TYPE_FIELD_STATIC_PHYSADDR (type, i));
4430 case FIELD_LOC_KIND_PHYSNAME:
4431 SET_FIELD_PHYSNAME (TYPE_FIELD (new_type, i),
4432 xstrdup (TYPE_FIELD_STATIC_PHYSNAME (type,
4436 internal_error (__FILE__, __LINE__,
4437 _("Unexpected type field location kind: %d"),
4438 TYPE_FIELD_LOC_KIND (type, i));
4443 /* For range types, copy the bounds information. */
4444 if (TYPE_CODE (type) == TYPE_CODE_RANGE)
4446 TYPE_RANGE_DATA (new_type) = xmalloc (sizeof (struct range_bounds));
4447 *TYPE_RANGE_DATA (new_type) = *TYPE_RANGE_DATA (type);
4450 if (TYPE_DYN_PROP_LIST (type) != NULL)
4451 TYPE_DYN_PROP_LIST (new_type)
4452 = copy_dynamic_prop_list (&objfile->objfile_obstack,
4453 TYPE_DYN_PROP_LIST (type));
4456 /* Copy pointers to other types. */
4457 if (TYPE_TARGET_TYPE (type))
4458 TYPE_TARGET_TYPE (new_type) =
4459 copy_type_recursive (objfile,
4460 TYPE_TARGET_TYPE (type),
4463 /* Maybe copy the type_specific bits.
4465 NOTE drow/2005-12-09: We do not copy the C++-specific bits like
4466 base classes and methods. There's no fundamental reason why we
4467 can't, but at the moment it is not needed. */
4469 switch (TYPE_SPECIFIC_FIELD (type))
4471 case TYPE_SPECIFIC_NONE:
4473 case TYPE_SPECIFIC_FUNC:
4474 INIT_FUNC_SPECIFIC (new_type);
4475 TYPE_CALLING_CONVENTION (new_type) = TYPE_CALLING_CONVENTION (type);
4476 TYPE_NO_RETURN (new_type) = TYPE_NO_RETURN (type);
4477 TYPE_TAIL_CALL_LIST (new_type) = NULL;
4479 case TYPE_SPECIFIC_FLOATFORMAT:
4480 TYPE_FLOATFORMAT (new_type) = TYPE_FLOATFORMAT (type);
4482 case TYPE_SPECIFIC_CPLUS_STUFF:
4483 INIT_CPLUS_SPECIFIC (new_type);
4485 case TYPE_SPECIFIC_GNAT_STUFF:
4486 INIT_GNAT_SPECIFIC (new_type);
4488 case TYPE_SPECIFIC_SELF_TYPE:
4489 set_type_self_type (new_type,
4490 copy_type_recursive (objfile, TYPE_SELF_TYPE (type),
4494 gdb_assert_not_reached ("bad type_specific_kind");
4500 /* Make a copy of the given TYPE, except that the pointer & reference
4501 types are not preserved.
4503 This function assumes that the given type has an associated objfile.
4504 This objfile is used to allocate the new type. */
4507 copy_type (const struct type *type)
4509 struct type *new_type;
4511 gdb_assert (TYPE_OBJFILE_OWNED (type));
4513 new_type = alloc_type_copy (type);
4514 TYPE_INSTANCE_FLAGS (new_type) = TYPE_INSTANCE_FLAGS (type);
4515 TYPE_LENGTH (new_type) = TYPE_LENGTH (type);
4516 memcpy (TYPE_MAIN_TYPE (new_type), TYPE_MAIN_TYPE (type),
4517 sizeof (struct main_type));
4518 if (TYPE_DYN_PROP_LIST (type) != NULL)
4519 TYPE_DYN_PROP_LIST (new_type)
4520 = copy_dynamic_prop_list (&TYPE_OBJFILE (type) -> objfile_obstack,
4521 TYPE_DYN_PROP_LIST (type));
4526 /* Helper functions to initialize architecture-specific types. */
4528 /* Allocate a type structure associated with GDBARCH and set its
4529 CODE, LENGTH, and NAME fields. */
4532 arch_type (struct gdbarch *gdbarch,
4533 enum type_code code, int length, char *name)
4537 type = alloc_type_arch (gdbarch);
4538 TYPE_CODE (type) = code;
4539 TYPE_LENGTH (type) = length;
4542 TYPE_NAME (type) = xstrdup (name);
4547 /* Allocate a TYPE_CODE_INT type structure associated with GDBARCH.
4548 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
4549 the type's TYPE_UNSIGNED flag. NAME is the type name. */
4552 arch_integer_type (struct gdbarch *gdbarch,
4553 int bit, int unsigned_p, char *name)
4557 t = arch_type (gdbarch, TYPE_CODE_INT, bit / TARGET_CHAR_BIT, name);
4559 TYPE_UNSIGNED (t) = 1;
4560 if (name && strcmp (name, "char") == 0)
4561 TYPE_NOSIGN (t) = 1;
4566 /* Allocate a TYPE_CODE_CHAR type structure associated with GDBARCH.
4567 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
4568 the type's TYPE_UNSIGNED flag. NAME is the type name. */
4571 arch_character_type (struct gdbarch *gdbarch,
4572 int bit, int unsigned_p, char *name)
4576 t = arch_type (gdbarch, TYPE_CODE_CHAR, bit / TARGET_CHAR_BIT, name);
4578 TYPE_UNSIGNED (t) = 1;
4583 /* Allocate a TYPE_CODE_BOOL type structure associated with GDBARCH.
4584 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
4585 the type's TYPE_UNSIGNED flag. NAME is the type name. */
4588 arch_boolean_type (struct gdbarch *gdbarch,
4589 int bit, int unsigned_p, char *name)
4593 t = arch_type (gdbarch, TYPE_CODE_BOOL, bit / TARGET_CHAR_BIT, name);
4595 TYPE_UNSIGNED (t) = 1;
4600 /* Allocate a TYPE_CODE_FLT type structure associated with GDBARCH.
4601 BIT is the type size in bits; if BIT equals -1, the size is
4602 determined by the floatformat. NAME is the type name. Set the
4603 TYPE_FLOATFORMAT from FLOATFORMATS. */
4606 arch_float_type (struct gdbarch *gdbarch,
4607 int bit, char *name, const struct floatformat **floatformats)
4613 gdb_assert (floatformats != NULL);
4614 gdb_assert (floatformats[0] != NULL && floatformats[1] != NULL);
4615 bit = floatformats[0]->totalsize;
4617 gdb_assert (bit >= 0);
4619 t = arch_type (gdbarch, TYPE_CODE_FLT, bit / TARGET_CHAR_BIT, name);
4620 TYPE_FLOATFORMAT (t) = floatformats;
4624 /* Allocate a TYPE_CODE_COMPLEX type structure associated with GDBARCH.
4625 NAME is the type name. TARGET_TYPE is the component float type. */
4628 arch_complex_type (struct gdbarch *gdbarch,
4629 char *name, struct type *target_type)
4633 t = arch_type (gdbarch, TYPE_CODE_COMPLEX,
4634 2 * TYPE_LENGTH (target_type), name);
4635 TYPE_TARGET_TYPE (t) = target_type;
4639 /* Allocate a TYPE_CODE_FLAGS type structure associated with GDBARCH.
4640 NAME is the type name. LENGTH is the size of the flag word in bytes. */
4643 arch_flags_type (struct gdbarch *gdbarch, char *name, int length)
4645 int nfields = length * TARGET_CHAR_BIT;
4648 type = arch_type (gdbarch, TYPE_CODE_FLAGS, length, name);
4649 TYPE_UNSIGNED (type) = 1;
4650 TYPE_NFIELDS (type) = nfields;
4651 TYPE_FIELDS (type) = TYPE_ZALLOC (type, nfields * sizeof (struct field));
4656 /* Add field to TYPE_CODE_FLAGS type TYPE to indicate the bit at
4657 position BITPOS is called NAME. */
4660 append_flags_type_flag (struct type *type, int bitpos, char *name)
4662 gdb_assert (TYPE_CODE (type) == TYPE_CODE_FLAGS);
4663 gdb_assert (bitpos < TYPE_NFIELDS (type));
4664 gdb_assert (bitpos >= 0);
4668 TYPE_FIELD_NAME (type, bitpos) = xstrdup (name);
4669 SET_FIELD_BITPOS (TYPE_FIELD (type, bitpos), bitpos);
4673 /* Don't show this field to the user. */
4674 SET_FIELD_BITPOS (TYPE_FIELD (type, bitpos), -1);
4678 /* Allocate a TYPE_CODE_STRUCT or TYPE_CODE_UNION type structure (as
4679 specified by CODE) associated with GDBARCH. NAME is the type name. */
4682 arch_composite_type (struct gdbarch *gdbarch, char *name, enum type_code code)
4686 gdb_assert (code == TYPE_CODE_STRUCT || code == TYPE_CODE_UNION);
4687 t = arch_type (gdbarch, code, 0, NULL);
4688 TYPE_TAG_NAME (t) = name;
4689 INIT_CPLUS_SPECIFIC (t);
4693 /* Add new field with name NAME and type FIELD to composite type T.
4694 Do not set the field's position or adjust the type's length;
4695 the caller should do so. Return the new field. */
4698 append_composite_type_field_raw (struct type *t, char *name,
4703 TYPE_NFIELDS (t) = TYPE_NFIELDS (t) + 1;
4704 TYPE_FIELDS (t) = xrealloc (TYPE_FIELDS (t),
4705 sizeof (struct field) * TYPE_NFIELDS (t));
4706 f = &(TYPE_FIELDS (t)[TYPE_NFIELDS (t) - 1]);
4707 memset (f, 0, sizeof f[0]);
4708 FIELD_TYPE (f[0]) = field;
4709 FIELD_NAME (f[0]) = name;
4713 /* Add new field with name NAME and type FIELD to composite type T.
4714 ALIGNMENT (if non-zero) specifies the minimum field alignment. */
4717 append_composite_type_field_aligned (struct type *t, char *name,
4718 struct type *field, int alignment)
4720 struct field *f = append_composite_type_field_raw (t, name, field);
4722 if (TYPE_CODE (t) == TYPE_CODE_UNION)
4724 if (TYPE_LENGTH (t) < TYPE_LENGTH (field))
4725 TYPE_LENGTH (t) = TYPE_LENGTH (field);
4727 else if (TYPE_CODE (t) == TYPE_CODE_STRUCT)
4729 TYPE_LENGTH (t) = TYPE_LENGTH (t) + TYPE_LENGTH (field);
4730 if (TYPE_NFIELDS (t) > 1)
4732 SET_FIELD_BITPOS (f[0],
4733 (FIELD_BITPOS (f[-1])
4734 + (TYPE_LENGTH (FIELD_TYPE (f[-1]))
4735 * TARGET_CHAR_BIT)));
4741 alignment *= TARGET_CHAR_BIT;
4742 left = FIELD_BITPOS (f[0]) % alignment;
4746 SET_FIELD_BITPOS (f[0], FIELD_BITPOS (f[0]) + (alignment - left));
4747 TYPE_LENGTH (t) += (alignment - left) / TARGET_CHAR_BIT;
4754 /* Add new field with name NAME and type FIELD to composite type T. */
4757 append_composite_type_field (struct type *t, char *name,
4760 append_composite_type_field_aligned (t, name, field, 0);
4763 static struct gdbarch_data *gdbtypes_data;
4765 const struct builtin_type *
4766 builtin_type (struct gdbarch *gdbarch)
4768 return gdbarch_data (gdbarch, gdbtypes_data);
4772 gdbtypes_post_init (struct gdbarch *gdbarch)
4774 struct builtin_type *builtin_type
4775 = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct builtin_type);
4778 builtin_type->builtin_void
4779 = arch_type (gdbarch, TYPE_CODE_VOID, 1, "void");
4780 builtin_type->builtin_char
4781 = arch_integer_type (gdbarch, TARGET_CHAR_BIT,
4782 !gdbarch_char_signed (gdbarch), "char");
4783 builtin_type->builtin_signed_char
4784 = arch_integer_type (gdbarch, TARGET_CHAR_BIT,
4786 builtin_type->builtin_unsigned_char
4787 = arch_integer_type (gdbarch, TARGET_CHAR_BIT,
4788 1, "unsigned char");
4789 builtin_type->builtin_short
4790 = arch_integer_type (gdbarch, gdbarch_short_bit (gdbarch),
4792 builtin_type->builtin_unsigned_short
4793 = arch_integer_type (gdbarch, gdbarch_short_bit (gdbarch),
4794 1, "unsigned short");
4795 builtin_type->builtin_int
4796 = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch),
4798 builtin_type->builtin_unsigned_int
4799 = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch),
4801 builtin_type->builtin_long
4802 = arch_integer_type (gdbarch, gdbarch_long_bit (gdbarch),
4804 builtin_type->builtin_unsigned_long
4805 = arch_integer_type (gdbarch, gdbarch_long_bit (gdbarch),
4806 1, "unsigned long");
4807 builtin_type->builtin_long_long
4808 = arch_integer_type (gdbarch, gdbarch_long_long_bit (gdbarch),
4810 builtin_type->builtin_unsigned_long_long
4811 = arch_integer_type (gdbarch, gdbarch_long_long_bit (gdbarch),
4812 1, "unsigned long long");
4813 builtin_type->builtin_float
4814 = arch_float_type (gdbarch, gdbarch_float_bit (gdbarch),
4815 "float", gdbarch_float_format (gdbarch));
4816 builtin_type->builtin_double
4817 = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch),
4818 "double", gdbarch_double_format (gdbarch));
4819 builtin_type->builtin_long_double
4820 = arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch),
4821 "long double", gdbarch_long_double_format (gdbarch));
4822 builtin_type->builtin_complex
4823 = arch_complex_type (gdbarch, "complex",
4824 builtin_type->builtin_float);
4825 builtin_type->builtin_double_complex
4826 = arch_complex_type (gdbarch, "double complex",
4827 builtin_type->builtin_double);
4828 builtin_type->builtin_string
4829 = arch_type (gdbarch, TYPE_CODE_STRING, 1, "string");
4830 builtin_type->builtin_bool
4831 = arch_type (gdbarch, TYPE_CODE_BOOL, 1, "bool");
4833 /* The following three are about decimal floating point types, which
4834 are 32-bits, 64-bits and 128-bits respectively. */
4835 builtin_type->builtin_decfloat
4836 = arch_type (gdbarch, TYPE_CODE_DECFLOAT, 32 / 8, "_Decimal32");
4837 builtin_type->builtin_decdouble
4838 = arch_type (gdbarch, TYPE_CODE_DECFLOAT, 64 / 8, "_Decimal64");
4839 builtin_type->builtin_declong
4840 = arch_type (gdbarch, TYPE_CODE_DECFLOAT, 128 / 8, "_Decimal128");
4842 /* "True" character types. */
4843 builtin_type->builtin_true_char
4844 = arch_character_type (gdbarch, TARGET_CHAR_BIT, 0, "true character");
4845 builtin_type->builtin_true_unsigned_char
4846 = arch_character_type (gdbarch, TARGET_CHAR_BIT, 1, "true character");
4848 /* Fixed-size integer types. */
4849 builtin_type->builtin_int0
4850 = arch_integer_type (gdbarch, 0, 0, "int0_t");
4851 builtin_type->builtin_int8
4852 = arch_integer_type (gdbarch, 8, 0, "int8_t");
4853 builtin_type->builtin_uint8
4854 = arch_integer_type (gdbarch, 8, 1, "uint8_t");
4855 builtin_type->builtin_int16
4856 = arch_integer_type (gdbarch, 16, 0, "int16_t");
4857 builtin_type->builtin_uint16
4858 = arch_integer_type (gdbarch, 16, 1, "uint16_t");
4859 builtin_type->builtin_int32
4860 = arch_integer_type (gdbarch, 32, 0, "int32_t");
4861 builtin_type->builtin_uint32
4862 = arch_integer_type (gdbarch, 32, 1, "uint32_t");
4863 builtin_type->builtin_int64
4864 = arch_integer_type (gdbarch, 64, 0, "int64_t");
4865 builtin_type->builtin_uint64
4866 = arch_integer_type (gdbarch, 64, 1, "uint64_t");
4867 builtin_type->builtin_int128
4868 = arch_integer_type (gdbarch, 128, 0, "int128_t");
4869 builtin_type->builtin_uint128
4870 = arch_integer_type (gdbarch, 128, 1, "uint128_t");
4871 TYPE_INSTANCE_FLAGS (builtin_type->builtin_int8) |=
4872 TYPE_INSTANCE_FLAG_NOTTEXT;
4873 TYPE_INSTANCE_FLAGS (builtin_type->builtin_uint8) |=
4874 TYPE_INSTANCE_FLAG_NOTTEXT;
4876 /* Wide character types. */
4877 builtin_type->builtin_char16
4878 = arch_integer_type (gdbarch, 16, 0, "char16_t");
4879 builtin_type->builtin_char32
4880 = arch_integer_type (gdbarch, 32, 0, "char32_t");
4883 /* Default data/code pointer types. */
4884 builtin_type->builtin_data_ptr
4885 = lookup_pointer_type (builtin_type->builtin_void);
4886 builtin_type->builtin_func_ptr
4887 = lookup_pointer_type (lookup_function_type (builtin_type->builtin_void));
4888 builtin_type->builtin_func_func
4889 = lookup_function_type (builtin_type->builtin_func_ptr);
4891 /* This type represents a GDB internal function. */
4892 builtin_type->internal_fn
4893 = arch_type (gdbarch, TYPE_CODE_INTERNAL_FUNCTION, 0,
4894 "<internal function>");
4896 /* This type represents an xmethod. */
4897 builtin_type->xmethod
4898 = arch_type (gdbarch, TYPE_CODE_XMETHOD, 0, "<xmethod>");
4900 return builtin_type;
4903 /* This set of objfile-based types is intended to be used by symbol
4904 readers as basic types. */
4906 static const struct objfile_data *objfile_type_data;
4908 const struct objfile_type *
4909 objfile_type (struct objfile *objfile)
4911 struct gdbarch *gdbarch;
4912 struct objfile_type *objfile_type
4913 = objfile_data (objfile, objfile_type_data);
4916 return objfile_type;
4918 objfile_type = OBSTACK_CALLOC (&objfile->objfile_obstack,
4919 1, struct objfile_type);
4921 /* Use the objfile architecture to determine basic type properties. */
4922 gdbarch = get_objfile_arch (objfile);
4925 objfile_type->builtin_void
4926 = init_type (TYPE_CODE_VOID, 1,
4930 objfile_type->builtin_char
4931 = init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
4933 | (gdbarch_char_signed (gdbarch) ? 0 : TYPE_FLAG_UNSIGNED)),
4935 objfile_type->builtin_signed_char
4936 = init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
4938 "signed char", objfile);
4939 objfile_type->builtin_unsigned_char
4940 = init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
4942 "unsigned char", objfile);
4943 objfile_type->builtin_short
4944 = init_type (TYPE_CODE_INT,
4945 gdbarch_short_bit (gdbarch) / TARGET_CHAR_BIT,
4946 0, "short", objfile);
4947 objfile_type->builtin_unsigned_short
4948 = init_type (TYPE_CODE_INT,
4949 gdbarch_short_bit (gdbarch) / TARGET_CHAR_BIT,
4950 TYPE_FLAG_UNSIGNED, "unsigned short", objfile);
4951 objfile_type->builtin_int
4952 = init_type (TYPE_CODE_INT,
4953 gdbarch_int_bit (gdbarch) / TARGET_CHAR_BIT,
4955 objfile_type->builtin_unsigned_int
4956 = init_type (TYPE_CODE_INT,
4957 gdbarch_int_bit (gdbarch) / TARGET_CHAR_BIT,
4958 TYPE_FLAG_UNSIGNED, "unsigned int", objfile);
4959 objfile_type->builtin_long
4960 = init_type (TYPE_CODE_INT,
4961 gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT,
4962 0, "long", objfile);
4963 objfile_type->builtin_unsigned_long
4964 = init_type (TYPE_CODE_INT,
4965 gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT,
4966 TYPE_FLAG_UNSIGNED, "unsigned long", objfile);
4967 objfile_type->builtin_long_long
4968 = init_type (TYPE_CODE_INT,
4969 gdbarch_long_long_bit (gdbarch) / TARGET_CHAR_BIT,
4970 0, "long long", objfile);
4971 objfile_type->builtin_unsigned_long_long
4972 = init_type (TYPE_CODE_INT,
4973 gdbarch_long_long_bit (gdbarch) / TARGET_CHAR_BIT,
4974 TYPE_FLAG_UNSIGNED, "unsigned long long", objfile);
4976 objfile_type->builtin_float
4977 = init_type (TYPE_CODE_FLT,
4978 gdbarch_float_bit (gdbarch) / TARGET_CHAR_BIT,
4979 0, "float", objfile);
4980 TYPE_FLOATFORMAT (objfile_type->builtin_float)
4981 = gdbarch_float_format (gdbarch);
4982 objfile_type->builtin_double
4983 = init_type (TYPE_CODE_FLT,
4984 gdbarch_double_bit (gdbarch) / TARGET_CHAR_BIT,
4985 0, "double", objfile);
4986 TYPE_FLOATFORMAT (objfile_type->builtin_double)
4987 = gdbarch_double_format (gdbarch);
4988 objfile_type->builtin_long_double
4989 = init_type (TYPE_CODE_FLT,
4990 gdbarch_long_double_bit (gdbarch) / TARGET_CHAR_BIT,
4991 0, "long double", objfile);
4992 TYPE_FLOATFORMAT (objfile_type->builtin_long_double)
4993 = gdbarch_long_double_format (gdbarch);
4995 /* This type represents a type that was unrecognized in symbol read-in. */
4996 objfile_type->builtin_error
4997 = init_type (TYPE_CODE_ERROR, 0, 0, "<unknown type>", objfile);
4999 /* The following set of types is used for symbols with no
5000 debug information. */
5001 objfile_type->nodebug_text_symbol
5002 = init_type (TYPE_CODE_FUNC, 1, 0,
5003 "<text variable, no debug info>", objfile);
5004 TYPE_TARGET_TYPE (objfile_type->nodebug_text_symbol)
5005 = objfile_type->builtin_int;
5006 objfile_type->nodebug_text_gnu_ifunc_symbol
5007 = init_type (TYPE_CODE_FUNC, 1, TYPE_FLAG_GNU_IFUNC,
5008 "<text gnu-indirect-function variable, no debug info>",
5010 TYPE_TARGET_TYPE (objfile_type->nodebug_text_gnu_ifunc_symbol)
5011 = objfile_type->nodebug_text_symbol;
5012 objfile_type->nodebug_got_plt_symbol
5013 = init_type (TYPE_CODE_PTR, gdbarch_addr_bit (gdbarch) / 8, 0,
5014 "<text from jump slot in .got.plt, no debug info>",
5016 TYPE_TARGET_TYPE (objfile_type->nodebug_got_plt_symbol)
5017 = objfile_type->nodebug_text_symbol;
5018 objfile_type->nodebug_data_symbol
5019 = init_type (TYPE_CODE_INT,
5020 gdbarch_int_bit (gdbarch) / HOST_CHAR_BIT, 0,
5021 "<data variable, no debug info>", objfile);
5022 objfile_type->nodebug_unknown_symbol
5023 = init_type (TYPE_CODE_INT, 1, 0,
5024 "<variable (not text or data), no debug info>", objfile);
5025 objfile_type->nodebug_tls_symbol
5026 = init_type (TYPE_CODE_INT,
5027 gdbarch_int_bit (gdbarch) / HOST_CHAR_BIT, 0,
5028 "<thread local variable, no debug info>", objfile);
5030 /* NOTE: on some targets, addresses and pointers are not necessarily
5034 - gdb's `struct type' always describes the target's
5036 - gdb's `struct value' objects should always hold values in
5038 - gdb's CORE_ADDR values are addresses in the unified virtual
5039 address space that the assembler and linker work with. Thus,
5040 since target_read_memory takes a CORE_ADDR as an argument, it
5041 can access any memory on the target, even if the processor has
5042 separate code and data address spaces.
5044 In this context, objfile_type->builtin_core_addr is a bit odd:
5045 it's a target type for a value the target will never see. It's
5046 only used to hold the values of (typeless) linker symbols, which
5047 are indeed in the unified virtual address space. */
5049 objfile_type->builtin_core_addr
5050 = init_type (TYPE_CODE_INT,
5051 gdbarch_addr_bit (gdbarch) / 8,
5052 TYPE_FLAG_UNSIGNED, "__CORE_ADDR", objfile);
5054 set_objfile_data (objfile, objfile_type_data, objfile_type);
5055 return objfile_type;
5058 extern initialize_file_ftype _initialize_gdbtypes;
5061 _initialize_gdbtypes (void)
5063 gdbtypes_data = gdbarch_data_register_post_init (gdbtypes_post_init);
5064 objfile_type_data = register_objfile_data ();
5066 add_setshow_zuinteger_cmd ("overload", no_class, &overload_debug,
5067 _("Set debugging of C++ overloading."),
5068 _("Show debugging of C++ overloading."),
5069 _("When enabled, ranking of the "
5070 "functions is displayed."),
5072 show_overload_debug,
5073 &setdebuglist, &showdebuglist);
5075 /* Add user knob for controlling resolution of opaque types. */
5076 add_setshow_boolean_cmd ("opaque-type-resolution", class_support,
5077 &opaque_type_resolution,
5078 _("Set resolution of opaque struct/class/union"
5079 " types (if set before loading symbols)."),
5080 _("Show resolution of opaque struct/class/union"
5081 " types (if set before loading symbols)."),
5083 show_opaque_type_resolution,
5084 &setlist, &showlist);
5086 /* Add an option to permit non-strict type checking. */
5087 add_setshow_boolean_cmd ("type", class_support,
5088 &strict_type_checking,
5089 _("Set strict type checking."),
5090 _("Show strict type checking."),
5092 show_strict_type_checking,
5093 &setchecklist, &showchecklist);