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
190 on the obstack associated with GDBARCH. */
193 alloc_type_arch (struct gdbarch *gdbarch)
197 gdb_assert (gdbarch != NULL);
199 /* Alloc the structure and start off with all fields zeroed. */
201 type = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct type);
202 TYPE_MAIN_TYPE (type) = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct main_type);
204 TYPE_OBJFILE_OWNED (type) = 0;
205 TYPE_OWNER (type).gdbarch = gdbarch;
207 /* Initialize the fields that might not be zero. */
209 TYPE_CODE (type) = TYPE_CODE_UNDEF;
210 TYPE_CHAIN (type) = type; /* Chain back to itself. */
215 /* If TYPE is objfile-associated, allocate a new type structure
216 associated with the same objfile. If TYPE is gdbarch-associated,
217 allocate a new type structure associated with the same gdbarch. */
220 alloc_type_copy (const struct type *type)
222 if (TYPE_OBJFILE_OWNED (type))
223 return alloc_type (TYPE_OWNER (type).objfile);
225 return alloc_type_arch (TYPE_OWNER (type).gdbarch);
228 /* If TYPE is gdbarch-associated, return that architecture.
229 If TYPE is objfile-associated, return that objfile's architecture. */
232 get_type_arch (const struct type *type)
234 if (TYPE_OBJFILE_OWNED (type))
235 return get_objfile_arch (TYPE_OWNER (type).objfile);
237 return TYPE_OWNER (type).gdbarch;
240 /* See gdbtypes.h. */
243 get_target_type (struct type *type)
247 type = TYPE_TARGET_TYPE (type);
249 type = check_typedef (type);
255 /* See gdbtypes.h. */
258 type_length_units (struct type *type)
260 struct gdbarch *arch = get_type_arch (type);
261 int unit_size = gdbarch_addressable_memory_unit_size (arch);
263 return TYPE_LENGTH (type) / unit_size;
266 /* Alloc a new type instance structure, fill it with some defaults,
267 and point it at OLDTYPE. Allocate the new type instance from the
268 same place as OLDTYPE. */
271 alloc_type_instance (struct type *oldtype)
275 /* Allocate the structure. */
277 if (! TYPE_OBJFILE_OWNED (oldtype))
278 type = XCNEW (struct type);
280 type = OBSTACK_ZALLOC (&TYPE_OBJFILE (oldtype)->objfile_obstack,
283 TYPE_MAIN_TYPE (type) = TYPE_MAIN_TYPE (oldtype);
285 TYPE_CHAIN (type) = type; /* Chain back to itself for now. */
290 /* Clear all remnants of the previous type at TYPE, in preparation for
291 replacing it with something else. Preserve owner information. */
294 smash_type (struct type *type)
296 int objfile_owned = TYPE_OBJFILE_OWNED (type);
297 union type_owner owner = TYPE_OWNER (type);
299 memset (TYPE_MAIN_TYPE (type), 0, sizeof (struct main_type));
301 /* Restore owner information. */
302 TYPE_OBJFILE_OWNED (type) = objfile_owned;
303 TYPE_OWNER (type) = owner;
305 /* For now, delete the rings. */
306 TYPE_CHAIN (type) = type;
308 /* For now, leave the pointer/reference types alone. */
311 /* Lookup a pointer to a type TYPE. TYPEPTR, if nonzero, points
312 to a pointer to memory where the pointer type should be stored.
313 If *TYPEPTR is zero, update it to point to the pointer type we return.
314 We allocate new memory if needed. */
317 make_pointer_type (struct type *type, struct type **typeptr)
319 struct type *ntype; /* New type */
322 ntype = TYPE_POINTER_TYPE (type);
327 return ntype; /* Don't care about alloc,
328 and have new type. */
329 else if (*typeptr == 0)
331 *typeptr = ntype; /* Tracking alloc, and have new type. */
336 if (typeptr == 0 || *typeptr == 0) /* We'll need to allocate one. */
338 ntype = alloc_type_copy (type);
342 else /* We have storage, but need to reset it. */
345 chain = TYPE_CHAIN (ntype);
347 TYPE_CHAIN (ntype) = chain;
350 TYPE_TARGET_TYPE (ntype) = type;
351 TYPE_POINTER_TYPE (type) = ntype;
353 /* FIXME! Assumes the machine has only one representation for pointers! */
356 = gdbarch_ptr_bit (get_type_arch (type)) / TARGET_CHAR_BIT;
357 TYPE_CODE (ntype) = TYPE_CODE_PTR;
359 /* Mark pointers as unsigned. The target converts between pointers
360 and addresses (CORE_ADDRs) using gdbarch_pointer_to_address and
361 gdbarch_address_to_pointer. */
362 TYPE_UNSIGNED (ntype) = 1;
364 /* Update the length of all the other variants of this type. */
365 chain = TYPE_CHAIN (ntype);
366 while (chain != ntype)
368 TYPE_LENGTH (chain) = TYPE_LENGTH (ntype);
369 chain = TYPE_CHAIN (chain);
375 /* Given a type TYPE, return a type of pointers to that type.
376 May need to construct such a type if this is the first use. */
379 lookup_pointer_type (struct type *type)
381 return make_pointer_type (type, (struct type **) 0);
384 /* Lookup a C++ `reference' to a type TYPE. TYPEPTR, if nonzero,
385 points to a pointer to memory where the reference type should be
386 stored. If *TYPEPTR is zero, update it to point to the reference
387 type we return. We allocate new memory if needed. */
390 make_reference_type (struct type *type, struct type **typeptr)
392 struct type *ntype; /* New type */
395 ntype = TYPE_REFERENCE_TYPE (type);
400 return ntype; /* Don't care about alloc,
401 and have new type. */
402 else if (*typeptr == 0)
404 *typeptr = ntype; /* Tracking alloc, and have new type. */
409 if (typeptr == 0 || *typeptr == 0) /* We'll need to allocate one. */
411 ntype = alloc_type_copy (type);
415 else /* We have storage, but need to reset it. */
418 chain = TYPE_CHAIN (ntype);
420 TYPE_CHAIN (ntype) = chain;
423 TYPE_TARGET_TYPE (ntype) = type;
424 TYPE_REFERENCE_TYPE (type) = ntype;
426 /* FIXME! Assume the machine has only one representation for
427 references, and that it matches the (only) representation for
430 TYPE_LENGTH (ntype) =
431 gdbarch_ptr_bit (get_type_arch (type)) / TARGET_CHAR_BIT;
432 TYPE_CODE (ntype) = TYPE_CODE_REF;
434 if (!TYPE_REFERENCE_TYPE (type)) /* Remember it, if don't have one. */
435 TYPE_REFERENCE_TYPE (type) = ntype;
437 /* Update the length of all the other variants of this type. */
438 chain = TYPE_CHAIN (ntype);
439 while (chain != ntype)
441 TYPE_LENGTH (chain) = TYPE_LENGTH (ntype);
442 chain = TYPE_CHAIN (chain);
448 /* Same as above, but caller doesn't care about memory allocation
452 lookup_reference_type (struct type *type)
454 return make_reference_type (type, (struct type **) 0);
457 /* Lookup a function type that returns type TYPE. TYPEPTR, if
458 nonzero, points to a pointer to memory where the function type
459 should be stored. If *TYPEPTR is zero, update it to point to the
460 function type we return. We allocate new memory if needed. */
463 make_function_type (struct type *type, struct type **typeptr)
465 struct type *ntype; /* New type */
467 if (typeptr == 0 || *typeptr == 0) /* We'll need to allocate one. */
469 ntype = alloc_type_copy (type);
473 else /* We have storage, but need to reset it. */
479 TYPE_TARGET_TYPE (ntype) = type;
481 TYPE_LENGTH (ntype) = 1;
482 TYPE_CODE (ntype) = TYPE_CODE_FUNC;
484 INIT_FUNC_SPECIFIC (ntype);
489 /* Given a type TYPE, return a type of functions that return that type.
490 May need to construct such a type if this is the first use. */
493 lookup_function_type (struct type *type)
495 return make_function_type (type, (struct type **) 0);
498 /* Given a type TYPE and argument types, return the appropriate
499 function type. If the final type in PARAM_TYPES is NULL, make a
503 lookup_function_type_with_arguments (struct type *type,
505 struct type **param_types)
507 struct type *fn = make_function_type (type, (struct type **) 0);
512 if (param_types[nparams - 1] == NULL)
515 TYPE_VARARGS (fn) = 1;
517 else if (TYPE_CODE (check_typedef (param_types[nparams - 1]))
521 /* Caller should have ensured this. */
522 gdb_assert (nparams == 0);
523 TYPE_PROTOTYPED (fn) = 1;
527 TYPE_NFIELDS (fn) = nparams;
529 = (struct field *) TYPE_ZALLOC (fn, nparams * sizeof (struct field));
530 for (i = 0; i < nparams; ++i)
531 TYPE_FIELD_TYPE (fn, i) = param_types[i];
536 /* Identify address space identifier by name --
537 return the integer flag defined in gdbtypes.h. */
540 address_space_name_to_int (struct gdbarch *gdbarch, char *space_identifier)
544 /* Check for known address space delimiters. */
545 if (!strcmp (space_identifier, "code"))
546 return TYPE_INSTANCE_FLAG_CODE_SPACE;
547 else if (!strcmp (space_identifier, "data"))
548 return TYPE_INSTANCE_FLAG_DATA_SPACE;
549 else if (gdbarch_address_class_name_to_type_flags_p (gdbarch)
550 && gdbarch_address_class_name_to_type_flags (gdbarch,
555 error (_("Unknown address space specifier: \"%s\""), space_identifier);
558 /* Identify address space identifier by integer flag as defined in
559 gdbtypes.h -- return the string version of the adress space name. */
562 address_space_int_to_name (struct gdbarch *gdbarch, int space_flag)
564 if (space_flag & TYPE_INSTANCE_FLAG_CODE_SPACE)
566 else if (space_flag & TYPE_INSTANCE_FLAG_DATA_SPACE)
568 else if ((space_flag & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL)
569 && gdbarch_address_class_type_flags_to_name_p (gdbarch))
570 return gdbarch_address_class_type_flags_to_name (gdbarch, space_flag);
575 /* Create a new type with instance flags NEW_FLAGS, based on TYPE.
577 If STORAGE is non-NULL, create the new type instance there.
578 STORAGE must be in the same obstack as TYPE. */
581 make_qualified_type (struct type *type, int new_flags,
582 struct type *storage)
589 if (TYPE_INSTANCE_FLAGS (ntype) == new_flags)
591 ntype = TYPE_CHAIN (ntype);
593 while (ntype != type);
595 /* Create a new type instance. */
597 ntype = alloc_type_instance (type);
600 /* If STORAGE was provided, it had better be in the same objfile
601 as TYPE. Otherwise, we can't link it into TYPE's cv chain:
602 if one objfile is freed and the other kept, we'd have
603 dangling pointers. */
604 gdb_assert (TYPE_OBJFILE (type) == TYPE_OBJFILE (storage));
607 TYPE_MAIN_TYPE (ntype) = TYPE_MAIN_TYPE (type);
608 TYPE_CHAIN (ntype) = ntype;
611 /* Pointers or references to the original type are not relevant to
613 TYPE_POINTER_TYPE (ntype) = (struct type *) 0;
614 TYPE_REFERENCE_TYPE (ntype) = (struct type *) 0;
616 /* Chain the new qualified type to the old type. */
617 TYPE_CHAIN (ntype) = TYPE_CHAIN (type);
618 TYPE_CHAIN (type) = ntype;
620 /* Now set the instance flags and return the new type. */
621 TYPE_INSTANCE_FLAGS (ntype) = new_flags;
623 /* Set length of new type to that of the original type. */
624 TYPE_LENGTH (ntype) = TYPE_LENGTH (type);
629 /* Make an address-space-delimited variant of a type -- a type that
630 is identical to the one supplied except that it has an address
631 space attribute attached to it (such as "code" or "data").
633 The space attributes "code" and "data" are for Harvard
634 architectures. The address space attributes are for architectures
635 which have alternately sized pointers or pointers with alternate
639 make_type_with_address_space (struct type *type, int space_flag)
641 int new_flags = ((TYPE_INSTANCE_FLAGS (type)
642 & ~(TYPE_INSTANCE_FLAG_CODE_SPACE
643 | TYPE_INSTANCE_FLAG_DATA_SPACE
644 | TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL))
647 return make_qualified_type (type, new_flags, NULL);
650 /* Make a "c-v" variant of a type -- a type that is identical to the
651 one supplied except that it may have const or volatile attributes
652 CNST is a flag for setting the const attribute
653 VOLTL is a flag for setting the volatile attribute
654 TYPE is the base type whose variant we are creating.
656 If TYPEPTR and *TYPEPTR are non-zero, then *TYPEPTR points to
657 storage to hold the new qualified type; *TYPEPTR and TYPE must be
658 in the same objfile. Otherwise, allocate fresh memory for the new
659 type whereever TYPE lives. If TYPEPTR is non-zero, set it to the
660 new type we construct. */
663 make_cv_type (int cnst, int voltl,
665 struct type **typeptr)
667 struct type *ntype; /* New type */
669 int new_flags = (TYPE_INSTANCE_FLAGS (type)
670 & ~(TYPE_INSTANCE_FLAG_CONST
671 | TYPE_INSTANCE_FLAG_VOLATILE));
674 new_flags |= TYPE_INSTANCE_FLAG_CONST;
677 new_flags |= TYPE_INSTANCE_FLAG_VOLATILE;
679 if (typeptr && *typeptr != NULL)
681 /* TYPE and *TYPEPTR must be in the same objfile. We can't have
682 a C-V variant chain that threads across objfiles: if one
683 objfile gets freed, then the other has a broken C-V chain.
685 This code used to try to copy over the main type from TYPE to
686 *TYPEPTR if they were in different objfiles, but that's
687 wrong, too: TYPE may have a field list or member function
688 lists, which refer to types of their own, etc. etc. The
689 whole shebang would need to be copied over recursively; you
690 can't have inter-objfile pointers. The only thing to do is
691 to leave stub types as stub types, and look them up afresh by
692 name each time you encounter them. */
693 gdb_assert (TYPE_OBJFILE (*typeptr) == TYPE_OBJFILE (type));
696 ntype = make_qualified_type (type, new_flags,
697 typeptr ? *typeptr : NULL);
705 /* Make a 'restrict'-qualified version of TYPE. */
708 make_restrict_type (struct type *type)
710 return make_qualified_type (type,
711 (TYPE_INSTANCE_FLAGS (type)
712 | TYPE_INSTANCE_FLAG_RESTRICT),
716 /* Make a type without const, volatile, or restrict. */
719 make_unqualified_type (struct type *type)
721 return make_qualified_type (type,
722 (TYPE_INSTANCE_FLAGS (type)
723 & ~(TYPE_INSTANCE_FLAG_CONST
724 | TYPE_INSTANCE_FLAG_VOLATILE
725 | TYPE_INSTANCE_FLAG_RESTRICT)),
729 /* Make a '_Atomic'-qualified version of TYPE. */
732 make_atomic_type (struct type *type)
734 return make_qualified_type (type,
735 (TYPE_INSTANCE_FLAGS (type)
736 | TYPE_INSTANCE_FLAG_ATOMIC),
740 /* Replace the contents of ntype with the type *type. This changes the
741 contents, rather than the pointer for TYPE_MAIN_TYPE (ntype); thus
742 the changes are propogated to all types in the TYPE_CHAIN.
744 In order to build recursive types, it's inevitable that we'll need
745 to update types in place --- but this sort of indiscriminate
746 smashing is ugly, and needs to be replaced with something more
747 controlled. TYPE_MAIN_TYPE is a step in this direction; it's not
748 clear if more steps are needed. */
751 replace_type (struct type *ntype, struct type *type)
755 /* These two types had better be in the same objfile. Otherwise,
756 the assignment of one type's main type structure to the other
757 will produce a type with references to objects (names; field
758 lists; etc.) allocated on an objfile other than its own. */
759 gdb_assert (TYPE_OBJFILE (ntype) == TYPE_OBJFILE (ntype));
761 *TYPE_MAIN_TYPE (ntype) = *TYPE_MAIN_TYPE (type);
763 /* The type length is not a part of the main type. Update it for
764 each type on the variant chain. */
768 /* Assert that this element of the chain has no address-class bits
769 set in its flags. Such type variants might have type lengths
770 which are supposed to be different from the non-address-class
771 variants. This assertion shouldn't ever be triggered because
772 symbol readers which do construct address-class variants don't
773 call replace_type(). */
774 gdb_assert (TYPE_ADDRESS_CLASS_ALL (chain) == 0);
776 TYPE_LENGTH (chain) = TYPE_LENGTH (type);
777 chain = TYPE_CHAIN (chain);
779 while (ntype != chain);
781 /* Assert that the two types have equivalent instance qualifiers.
782 This should be true for at least all of our debug readers. */
783 gdb_assert (TYPE_INSTANCE_FLAGS (ntype) == TYPE_INSTANCE_FLAGS (type));
786 /* Implement direct support for MEMBER_TYPE in GNU C++.
787 May need to construct such a type if this is the first use.
788 The TYPE is the type of the member. The DOMAIN is the type
789 of the aggregate that the member belongs to. */
792 lookup_memberptr_type (struct type *type, struct type *domain)
796 mtype = alloc_type_copy (type);
797 smash_to_memberptr_type (mtype, domain, type);
801 /* Return a pointer-to-method type, for a method of type TO_TYPE. */
804 lookup_methodptr_type (struct type *to_type)
808 mtype = alloc_type_copy (to_type);
809 smash_to_methodptr_type (mtype, to_type);
813 /* Allocate a stub method whose return type is TYPE. This apparently
814 happens for speed of symbol reading, since parsing out the
815 arguments to the method is cpu-intensive, the way we are doing it.
816 So, we will fill in arguments later. This always returns a fresh
820 allocate_stub_method (struct type *type)
824 mtype = alloc_type_copy (type);
825 TYPE_CODE (mtype) = TYPE_CODE_METHOD;
826 TYPE_LENGTH (mtype) = 1;
827 TYPE_STUB (mtype) = 1;
828 TYPE_TARGET_TYPE (mtype) = type;
829 /* TYPE_SELF_TYPE (mtype) = unknown yet */
833 /* Create a range type with a dynamic range from LOW_BOUND to
834 HIGH_BOUND, inclusive. See create_range_type for further details. */
837 create_range_type (struct type *result_type, struct type *index_type,
838 const struct dynamic_prop *low_bound,
839 const struct dynamic_prop *high_bound)
841 if (result_type == NULL)
842 result_type = alloc_type_copy (index_type);
843 TYPE_CODE (result_type) = TYPE_CODE_RANGE;
844 TYPE_TARGET_TYPE (result_type) = index_type;
845 if (TYPE_STUB (index_type))
846 TYPE_TARGET_STUB (result_type) = 1;
848 TYPE_LENGTH (result_type) = TYPE_LENGTH (check_typedef (index_type));
850 TYPE_RANGE_DATA (result_type) = (struct range_bounds *)
851 TYPE_ZALLOC (result_type, sizeof (struct range_bounds));
852 TYPE_RANGE_DATA (result_type)->low = *low_bound;
853 TYPE_RANGE_DATA (result_type)->high = *high_bound;
855 if (low_bound->kind == PROP_CONST && low_bound->data.const_val >= 0)
856 TYPE_UNSIGNED (result_type) = 1;
858 /* Ada allows the declaration of range types whose upper bound is
859 less than the lower bound, so checking the lower bound is not
860 enough. Make sure we do not mark a range type whose upper bound
861 is negative as unsigned. */
862 if (high_bound->kind == PROP_CONST && high_bound->data.const_val < 0)
863 TYPE_UNSIGNED (result_type) = 0;
868 /* Create a range type using either a blank type supplied in
869 RESULT_TYPE, or creating a new type, inheriting the objfile from
872 Indices will be of type INDEX_TYPE, and will range from LOW_BOUND
873 to HIGH_BOUND, inclusive.
875 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
876 sure it is TYPE_CODE_UNDEF before we bash it into a range type? */
879 create_static_range_type (struct type *result_type, struct type *index_type,
880 LONGEST low_bound, LONGEST high_bound)
882 struct dynamic_prop low, high;
884 low.kind = PROP_CONST;
885 low.data.const_val = low_bound;
887 high.kind = PROP_CONST;
888 high.data.const_val = high_bound;
890 result_type = create_range_type (result_type, index_type, &low, &high);
895 /* Predicate tests whether BOUNDS are static. Returns 1 if all bounds values
896 are static, otherwise returns 0. */
899 has_static_range (const struct range_bounds *bounds)
901 return (bounds->low.kind == PROP_CONST
902 && bounds->high.kind == PROP_CONST);
906 /* Set *LOWP and *HIGHP to the lower and upper bounds of discrete type
907 TYPE. Return 1 if type is a range type, 0 if it is discrete (and
908 bounds will fit in LONGEST), or -1 otherwise. */
911 get_discrete_bounds (struct type *type, LONGEST *lowp, LONGEST *highp)
913 type = check_typedef (type);
914 switch (TYPE_CODE (type))
916 case TYPE_CODE_RANGE:
917 *lowp = TYPE_LOW_BOUND (type);
918 *highp = TYPE_HIGH_BOUND (type);
921 if (TYPE_NFIELDS (type) > 0)
923 /* The enums may not be sorted by value, so search all
927 *lowp = *highp = TYPE_FIELD_ENUMVAL (type, 0);
928 for (i = 0; i < TYPE_NFIELDS (type); i++)
930 if (TYPE_FIELD_ENUMVAL (type, i) < *lowp)
931 *lowp = TYPE_FIELD_ENUMVAL (type, i);
932 if (TYPE_FIELD_ENUMVAL (type, i) > *highp)
933 *highp = TYPE_FIELD_ENUMVAL (type, i);
936 /* Set unsigned indicator if warranted. */
939 TYPE_UNSIGNED (type) = 1;
953 if (TYPE_LENGTH (type) > sizeof (LONGEST)) /* Too big */
955 if (!TYPE_UNSIGNED (type))
957 *lowp = -(1 << (TYPE_LENGTH (type) * TARGET_CHAR_BIT - 1));
961 /* ... fall through for unsigned ints ... */
964 /* This round-about calculation is to avoid shifting by
965 TYPE_LENGTH (type) * TARGET_CHAR_BIT, which will not work
966 if TYPE_LENGTH (type) == sizeof (LONGEST). */
967 *highp = 1 << (TYPE_LENGTH (type) * TARGET_CHAR_BIT - 1);
968 *highp = (*highp - 1) | *highp;
975 /* Assuming TYPE is a simple, non-empty array type, compute its upper
976 and lower bound. Save the low bound into LOW_BOUND if not NULL.
977 Save the high bound into HIGH_BOUND if not NULL.
979 Return 1 if the operation was successful. Return zero otherwise,
980 in which case the values of LOW_BOUND and HIGH_BOUNDS are unmodified.
982 We now simply use get_discrete_bounds call to get the values
983 of the low and high bounds.
984 get_discrete_bounds can return three values:
985 1, meaning that index is a range,
986 0, meaning that index is a discrete type,
987 or -1 for failure. */
990 get_array_bounds (struct type *type, LONGEST *low_bound, LONGEST *high_bound)
992 struct type *index = TYPE_INDEX_TYPE (type);
1000 res = get_discrete_bounds (index, &low, &high);
1004 /* Check if the array bounds are undefined. */
1006 && ((low_bound && TYPE_ARRAY_LOWER_BOUND_IS_UNDEFINED (type))
1007 || (high_bound && TYPE_ARRAY_UPPER_BOUND_IS_UNDEFINED (type))))
1019 /* Assuming that TYPE is a discrete type and VAL is a valid integer
1020 representation of a value of this type, save the corresponding
1021 position number in POS.
1023 Its differs from VAL only in the case of enumeration types. In
1024 this case, the position number of the value of the first listed
1025 enumeration literal is zero; the position number of the value of
1026 each subsequent enumeration literal is one more than that of its
1027 predecessor in the list.
1029 Return 1 if the operation was successful. Return zero otherwise,
1030 in which case the value of POS is unmodified.
1034 discrete_position (struct type *type, LONGEST val, LONGEST *pos)
1036 if (TYPE_CODE (type) == TYPE_CODE_ENUM)
1040 for (i = 0; i < TYPE_NFIELDS (type); i += 1)
1042 if (val == TYPE_FIELD_ENUMVAL (type, i))
1048 /* Invalid enumeration value. */
1058 /* Create an array type using either a blank type supplied in
1059 RESULT_TYPE, or creating a new type, inheriting the objfile from
1062 Elements will be of type ELEMENT_TYPE, the indices will be of type
1065 If BIT_STRIDE is not zero, build a packed array type whose element
1066 size is BIT_STRIDE. Otherwise, ignore this parameter.
1068 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
1069 sure it is TYPE_CODE_UNDEF before we bash it into an array
1073 create_array_type_with_stride (struct type *result_type,
1074 struct type *element_type,
1075 struct type *range_type,
1076 unsigned int bit_stride)
1078 if (result_type == NULL)
1079 result_type = alloc_type_copy (range_type);
1081 TYPE_CODE (result_type) = TYPE_CODE_ARRAY;
1082 TYPE_TARGET_TYPE (result_type) = element_type;
1083 if (has_static_range (TYPE_RANGE_DATA (range_type)))
1085 LONGEST low_bound, high_bound;
1087 if (get_discrete_bounds (range_type, &low_bound, &high_bound) < 0)
1088 low_bound = high_bound = 0;
1089 element_type = check_typedef (element_type);
1090 /* Be careful when setting the array length. Ada arrays can be
1091 empty arrays with the high_bound being smaller than the low_bound.
1092 In such cases, the array length should be zero. */
1093 if (high_bound < low_bound)
1094 TYPE_LENGTH (result_type) = 0;
1095 else if (bit_stride > 0)
1096 TYPE_LENGTH (result_type) =
1097 (bit_stride * (high_bound - low_bound + 1) + 7) / 8;
1099 TYPE_LENGTH (result_type) =
1100 TYPE_LENGTH (element_type) * (high_bound - low_bound + 1);
1104 /* This type is dynamic and its length needs to be computed
1105 on demand. In the meantime, avoid leaving the TYPE_LENGTH
1106 undefined by setting it to zero. Although we are not expected
1107 to trust TYPE_LENGTH in this case, setting the size to zero
1108 allows us to avoid allocating objects of random sizes in case
1109 we accidently do. */
1110 TYPE_LENGTH (result_type) = 0;
1113 TYPE_NFIELDS (result_type) = 1;
1114 TYPE_FIELDS (result_type) =
1115 (struct field *) TYPE_ZALLOC (result_type, sizeof (struct field));
1116 TYPE_INDEX_TYPE (result_type) = range_type;
1118 TYPE_FIELD_BITSIZE (result_type, 0) = bit_stride;
1120 /* TYPE_FLAG_TARGET_STUB will take care of zero length arrays. */
1121 if (TYPE_LENGTH (result_type) == 0)
1122 TYPE_TARGET_STUB (result_type) = 1;
1127 /* Same as create_array_type_with_stride but with no bit_stride
1128 (BIT_STRIDE = 0), thus building an unpacked array. */
1131 create_array_type (struct type *result_type,
1132 struct type *element_type,
1133 struct type *range_type)
1135 return create_array_type_with_stride (result_type, element_type,
1140 lookup_array_range_type (struct type *element_type,
1141 LONGEST low_bound, LONGEST high_bound)
1143 struct gdbarch *gdbarch = get_type_arch (element_type);
1144 struct type *index_type = builtin_type (gdbarch)->builtin_int;
1145 struct type *range_type
1146 = create_static_range_type (NULL, index_type, low_bound, high_bound);
1148 return create_array_type (NULL, element_type, range_type);
1151 /* Create a string type using either a blank type supplied in
1152 RESULT_TYPE, or creating a new type. String types are similar
1153 enough to array of char types that we can use create_array_type to
1154 build the basic type and then bash it into a string type.
1156 For fixed length strings, the range type contains 0 as the lower
1157 bound and the length of the string minus one as the upper bound.
1159 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
1160 sure it is TYPE_CODE_UNDEF before we bash it into a string
1164 create_string_type (struct type *result_type,
1165 struct type *string_char_type,
1166 struct type *range_type)
1168 result_type = create_array_type (result_type,
1171 TYPE_CODE (result_type) = TYPE_CODE_STRING;
1176 lookup_string_range_type (struct type *string_char_type,
1177 LONGEST low_bound, LONGEST high_bound)
1179 struct type *result_type;
1181 result_type = lookup_array_range_type (string_char_type,
1182 low_bound, high_bound);
1183 TYPE_CODE (result_type) = TYPE_CODE_STRING;
1188 create_set_type (struct type *result_type, struct type *domain_type)
1190 if (result_type == NULL)
1191 result_type = alloc_type_copy (domain_type);
1193 TYPE_CODE (result_type) = TYPE_CODE_SET;
1194 TYPE_NFIELDS (result_type) = 1;
1195 TYPE_FIELDS (result_type)
1196 = (struct field *) TYPE_ZALLOC (result_type, sizeof (struct field));
1198 if (!TYPE_STUB (domain_type))
1200 LONGEST low_bound, high_bound, bit_length;
1202 if (get_discrete_bounds (domain_type, &low_bound, &high_bound) < 0)
1203 low_bound = high_bound = 0;
1204 bit_length = high_bound - low_bound + 1;
1205 TYPE_LENGTH (result_type)
1206 = (bit_length + TARGET_CHAR_BIT - 1) / TARGET_CHAR_BIT;
1208 TYPE_UNSIGNED (result_type) = 1;
1210 TYPE_FIELD_TYPE (result_type, 0) = domain_type;
1215 /* Convert ARRAY_TYPE to a vector type. This may modify ARRAY_TYPE
1216 and any array types nested inside it. */
1219 make_vector_type (struct type *array_type)
1221 struct type *inner_array, *elt_type;
1224 /* Find the innermost array type, in case the array is
1225 multi-dimensional. */
1226 inner_array = array_type;
1227 while (TYPE_CODE (TYPE_TARGET_TYPE (inner_array)) == TYPE_CODE_ARRAY)
1228 inner_array = TYPE_TARGET_TYPE (inner_array);
1230 elt_type = TYPE_TARGET_TYPE (inner_array);
1231 if (TYPE_CODE (elt_type) == TYPE_CODE_INT)
1233 flags = TYPE_INSTANCE_FLAGS (elt_type) | TYPE_INSTANCE_FLAG_NOTTEXT;
1234 elt_type = make_qualified_type (elt_type, flags, NULL);
1235 TYPE_TARGET_TYPE (inner_array) = elt_type;
1238 TYPE_VECTOR (array_type) = 1;
1242 init_vector_type (struct type *elt_type, int n)
1244 struct type *array_type;
1246 array_type = lookup_array_range_type (elt_type, 0, n - 1);
1247 make_vector_type (array_type);
1251 /* Internal routine called by TYPE_SELF_TYPE to return the type that TYPE
1252 belongs to. In c++ this is the class of "this", but TYPE_THIS_TYPE is too
1253 confusing. "self" is a common enough replacement for "this".
1254 TYPE must be one of TYPE_CODE_METHODPTR, TYPE_CODE_MEMBERPTR, or
1255 TYPE_CODE_METHOD. */
1258 internal_type_self_type (struct type *type)
1260 switch (TYPE_CODE (type))
1262 case TYPE_CODE_METHODPTR:
1263 case TYPE_CODE_MEMBERPTR:
1264 if (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_NONE)
1266 gdb_assert (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_SELF_TYPE);
1267 return TYPE_MAIN_TYPE (type)->type_specific.self_type;
1268 case TYPE_CODE_METHOD:
1269 if (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_NONE)
1271 gdb_assert (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_FUNC);
1272 return TYPE_MAIN_TYPE (type)->type_specific.func_stuff->self_type;
1274 gdb_assert_not_reached ("bad type");
1278 /* Set the type of the class that TYPE belongs to.
1279 In c++ this is the class of "this".
1280 TYPE must be one of TYPE_CODE_METHODPTR, TYPE_CODE_MEMBERPTR, or
1281 TYPE_CODE_METHOD. */
1284 set_type_self_type (struct type *type, struct type *self_type)
1286 switch (TYPE_CODE (type))
1288 case TYPE_CODE_METHODPTR:
1289 case TYPE_CODE_MEMBERPTR:
1290 if (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_NONE)
1291 TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_SELF_TYPE;
1292 gdb_assert (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_SELF_TYPE);
1293 TYPE_MAIN_TYPE (type)->type_specific.self_type = self_type;
1295 case TYPE_CODE_METHOD:
1296 if (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_NONE)
1297 INIT_FUNC_SPECIFIC (type);
1298 gdb_assert (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_FUNC);
1299 TYPE_MAIN_TYPE (type)->type_specific.func_stuff->self_type = self_type;
1302 gdb_assert_not_reached ("bad type");
1306 /* Smash TYPE to be a type of pointers to members of SELF_TYPE with type
1307 TO_TYPE. A member pointer is a wierd thing -- it amounts to a
1308 typed offset into a struct, e.g. "an int at offset 8". A MEMBER
1309 TYPE doesn't include the offset (that's the value of the MEMBER
1310 itself), but does include the structure type into which it points
1313 When "smashing" the type, we preserve the objfile that the old type
1314 pointed to, since we aren't changing where the type is actually
1318 smash_to_memberptr_type (struct type *type, struct type *self_type,
1319 struct type *to_type)
1322 TYPE_CODE (type) = TYPE_CODE_MEMBERPTR;
1323 TYPE_TARGET_TYPE (type) = to_type;
1324 set_type_self_type (type, self_type);
1325 /* Assume that a data member pointer is the same size as a normal
1328 = gdbarch_ptr_bit (get_type_arch (to_type)) / TARGET_CHAR_BIT;
1331 /* Smash TYPE to be a type of pointer to methods type TO_TYPE.
1333 When "smashing" the type, we preserve the objfile that the old type
1334 pointed to, since we aren't changing where the type is actually
1338 smash_to_methodptr_type (struct type *type, struct type *to_type)
1341 TYPE_CODE (type) = TYPE_CODE_METHODPTR;
1342 TYPE_TARGET_TYPE (type) = to_type;
1343 set_type_self_type (type, TYPE_SELF_TYPE (to_type));
1344 TYPE_LENGTH (type) = cplus_method_ptr_size (to_type);
1347 /* Smash TYPE to be a type of method of SELF_TYPE with type TO_TYPE.
1348 METHOD just means `function that gets an extra "this" argument'.
1350 When "smashing" the type, we preserve the objfile that the old type
1351 pointed to, since we aren't changing where the type is actually
1355 smash_to_method_type (struct type *type, struct type *self_type,
1356 struct type *to_type, struct field *args,
1357 int nargs, int varargs)
1360 TYPE_CODE (type) = TYPE_CODE_METHOD;
1361 TYPE_TARGET_TYPE (type) = to_type;
1362 set_type_self_type (type, self_type);
1363 TYPE_FIELDS (type) = args;
1364 TYPE_NFIELDS (type) = nargs;
1366 TYPE_VARARGS (type) = 1;
1367 TYPE_LENGTH (type) = 1; /* In practice, this is never needed. */
1370 /* Return a typename for a struct/union/enum type without "struct ",
1371 "union ", or "enum ". If the type has a NULL name, return NULL. */
1374 type_name_no_tag (const struct type *type)
1376 if (TYPE_TAG_NAME (type) != NULL)
1377 return TYPE_TAG_NAME (type);
1379 /* Is there code which expects this to return the name if there is
1380 no tag name? My guess is that this is mainly used for C++ in
1381 cases where the two will always be the same. */
1382 return TYPE_NAME (type);
1385 /* A wrapper of type_name_no_tag which calls error if the type is anonymous.
1386 Since GCC PR debug/47510 DWARF provides associated information to detect the
1387 anonymous class linkage name from its typedef.
1389 Parameter TYPE should not yet have CHECK_TYPEDEF applied, this function will
1393 type_name_no_tag_or_error (struct type *type)
1395 struct type *saved_type = type;
1397 struct objfile *objfile;
1399 type = check_typedef (type);
1401 name = type_name_no_tag (type);
1405 name = type_name_no_tag (saved_type);
1406 objfile = TYPE_OBJFILE (saved_type);
1407 error (_("Invalid anonymous type %s [in module %s], GCC PR debug/47510 bug?"),
1408 name ? name : "<anonymous>",
1409 objfile ? objfile_name (objfile) : "<arch>");
1412 /* Lookup a typedef or primitive type named NAME, visible in lexical
1413 block BLOCK. If NOERR is nonzero, return zero if NAME is not
1414 suitably defined. */
1417 lookup_typename (const struct language_defn *language,
1418 struct gdbarch *gdbarch, const char *name,
1419 const struct block *block, int noerr)
1424 sym = lookup_symbol_in_language (name, block, VAR_DOMAIN,
1425 language->la_language, NULL).symbol;
1426 if (sym != NULL && SYMBOL_CLASS (sym) == LOC_TYPEDEF)
1427 return SYMBOL_TYPE (sym);
1431 error (_("No type named %s."), name);
1435 lookup_unsigned_typename (const struct language_defn *language,
1436 struct gdbarch *gdbarch, const char *name)
1438 char *uns = (char *) alloca (strlen (name) + 10);
1440 strcpy (uns, "unsigned ");
1441 strcpy (uns + 9, name);
1442 return lookup_typename (language, gdbarch, uns, (struct block *) NULL, 0);
1446 lookup_signed_typename (const struct language_defn *language,
1447 struct gdbarch *gdbarch, const char *name)
1450 char *uns = (char *) alloca (strlen (name) + 8);
1452 strcpy (uns, "signed ");
1453 strcpy (uns + 7, name);
1454 t = lookup_typename (language, gdbarch, uns, (struct block *) NULL, 1);
1455 /* If we don't find "signed FOO" just try again with plain "FOO". */
1458 return lookup_typename (language, gdbarch, name, (struct block *) NULL, 0);
1461 /* Lookup a structure type named "struct NAME",
1462 visible in lexical block BLOCK. */
1465 lookup_struct (const char *name, const struct block *block)
1469 sym = lookup_symbol (name, block, STRUCT_DOMAIN, 0).symbol;
1473 error (_("No struct type named %s."), name);
1475 if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_STRUCT)
1477 error (_("This context has class, union or enum %s, not a struct."),
1480 return (SYMBOL_TYPE (sym));
1483 /* Lookup a union type named "union NAME",
1484 visible in lexical block BLOCK. */
1487 lookup_union (const char *name, const struct block *block)
1492 sym = lookup_symbol (name, block, STRUCT_DOMAIN, 0).symbol;
1495 error (_("No union type named %s."), name);
1497 t = SYMBOL_TYPE (sym);
1499 if (TYPE_CODE (t) == TYPE_CODE_UNION)
1502 /* If we get here, it's not a union. */
1503 error (_("This context has class, struct or enum %s, not a union."),
1507 /* Lookup an enum type named "enum NAME",
1508 visible in lexical block BLOCK. */
1511 lookup_enum (const char *name, const struct block *block)
1515 sym = lookup_symbol (name, block, STRUCT_DOMAIN, 0).symbol;
1518 error (_("No enum type named %s."), name);
1520 if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_ENUM)
1522 error (_("This context has class, struct or union %s, not an enum."),
1525 return (SYMBOL_TYPE (sym));
1528 /* Lookup a template type named "template NAME<TYPE>",
1529 visible in lexical block BLOCK. */
1532 lookup_template_type (char *name, struct type *type,
1533 const struct block *block)
1536 char *nam = (char *)
1537 alloca (strlen (name) + strlen (TYPE_NAME (type)) + 4);
1541 strcat (nam, TYPE_NAME (type));
1542 strcat (nam, " >"); /* FIXME, extra space still introduced in gcc? */
1544 sym = lookup_symbol (nam, block, VAR_DOMAIN, 0).symbol;
1548 error (_("No template type named %s."), name);
1550 if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_STRUCT)
1552 error (_("This context has class, union or enum %s, not a struct."),
1555 return (SYMBOL_TYPE (sym));
1558 /* Given a type TYPE, lookup the type of the component of type named
1561 TYPE can be either a struct or union, or a pointer or reference to
1562 a struct or union. If it is a pointer or reference, its target
1563 type is automatically used. Thus '.' and '->' are interchangable,
1564 as specified for the definitions of the expression element types
1565 STRUCTOP_STRUCT and STRUCTOP_PTR.
1567 If NOERR is nonzero, return zero if NAME is not suitably defined.
1568 If NAME is the name of a baseclass type, return that type. */
1571 lookup_struct_elt_type (struct type *type, const char *name, int noerr)
1578 type = check_typedef (type);
1579 if (TYPE_CODE (type) != TYPE_CODE_PTR
1580 && TYPE_CODE (type) != TYPE_CODE_REF)
1582 type = TYPE_TARGET_TYPE (type);
1585 if (TYPE_CODE (type) != TYPE_CODE_STRUCT
1586 && TYPE_CODE (type) != TYPE_CODE_UNION)
1588 type_name = type_to_string (type);
1589 make_cleanup (xfree, type_name);
1590 error (_("Type %s is not a structure or union type."), type_name);
1594 /* FIXME: This change put in by Michael seems incorrect for the case
1595 where the structure tag name is the same as the member name.
1596 I.e. when doing "ptype bell->bar" for "struct foo { int bar; int
1597 foo; } bell;" Disabled by fnf. */
1601 type_name = type_name_no_tag (type);
1602 if (type_name != NULL && strcmp (type_name, name) == 0)
1607 for (i = TYPE_NFIELDS (type) - 1; i >= TYPE_N_BASECLASSES (type); i--)
1609 const char *t_field_name = TYPE_FIELD_NAME (type, i);
1611 if (t_field_name && (strcmp_iw (t_field_name, name) == 0))
1613 return TYPE_FIELD_TYPE (type, i);
1615 else if (!t_field_name || *t_field_name == '\0')
1617 struct type *subtype
1618 = lookup_struct_elt_type (TYPE_FIELD_TYPE (type, i), name, 1);
1620 if (subtype != NULL)
1625 /* OK, it's not in this class. Recursively check the baseclasses. */
1626 for (i = TYPE_N_BASECLASSES (type) - 1; i >= 0; i--)
1630 t = lookup_struct_elt_type (TYPE_BASECLASS (type, i), name, 1);
1642 type_name = type_to_string (type);
1643 make_cleanup (xfree, type_name);
1644 error (_("Type %s has no component named %s."), type_name, name);
1647 /* Store in *MAX the largest number representable by unsigned integer type
1651 get_unsigned_type_max (struct type *type, ULONGEST *max)
1655 type = check_typedef (type);
1656 gdb_assert (TYPE_CODE (type) == TYPE_CODE_INT && TYPE_UNSIGNED (type));
1657 gdb_assert (TYPE_LENGTH (type) <= sizeof (ULONGEST));
1659 /* Written this way to avoid overflow. */
1660 n = TYPE_LENGTH (type) * TARGET_CHAR_BIT;
1661 *max = ((((ULONGEST) 1 << (n - 1)) - 1) << 1) | 1;
1664 /* Store in *MIN, *MAX the smallest and largest numbers representable by
1665 signed integer type TYPE. */
1668 get_signed_type_minmax (struct type *type, LONGEST *min, LONGEST *max)
1672 type = check_typedef (type);
1673 gdb_assert (TYPE_CODE (type) == TYPE_CODE_INT && !TYPE_UNSIGNED (type));
1674 gdb_assert (TYPE_LENGTH (type) <= sizeof (LONGEST));
1676 n = TYPE_LENGTH (type) * TARGET_CHAR_BIT;
1677 *min = -((ULONGEST) 1 << (n - 1));
1678 *max = ((ULONGEST) 1 << (n - 1)) - 1;
1681 /* Internal routine called by TYPE_VPTR_FIELDNO to return the value of
1682 cplus_stuff.vptr_fieldno.
1684 cplus_stuff is initialized to cplus_struct_default which does not
1685 set vptr_fieldno to -1 for portability reasons (IWBN to use C99
1686 designated initializers). We cope with that here. */
1689 internal_type_vptr_fieldno (struct type *type)
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))
1696 return TYPE_RAW_CPLUS_SPECIFIC (type)->vptr_fieldno;
1699 /* Set the value of cplus_stuff.vptr_fieldno. */
1702 set_type_vptr_fieldno (struct type *type, int fieldno)
1704 type = check_typedef (type);
1705 gdb_assert (TYPE_CODE (type) == TYPE_CODE_STRUCT
1706 || TYPE_CODE (type) == TYPE_CODE_UNION);
1707 if (!HAVE_CPLUS_STRUCT (type))
1708 ALLOCATE_CPLUS_STRUCT_TYPE (type);
1709 TYPE_RAW_CPLUS_SPECIFIC (type)->vptr_fieldno = fieldno;
1712 /* Internal routine called by TYPE_VPTR_BASETYPE to return the value of
1713 cplus_stuff.vptr_basetype. */
1716 internal_type_vptr_basetype (struct type *type)
1718 type = check_typedef (type);
1719 gdb_assert (TYPE_CODE (type) == TYPE_CODE_STRUCT
1720 || TYPE_CODE (type) == TYPE_CODE_UNION);
1721 gdb_assert (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_CPLUS_STUFF);
1722 return TYPE_RAW_CPLUS_SPECIFIC (type)->vptr_basetype;
1725 /* Set the value of cplus_stuff.vptr_basetype. */
1728 set_type_vptr_basetype (struct type *type, struct type *basetype)
1730 type = check_typedef (type);
1731 gdb_assert (TYPE_CODE (type) == TYPE_CODE_STRUCT
1732 || TYPE_CODE (type) == TYPE_CODE_UNION);
1733 if (!HAVE_CPLUS_STRUCT (type))
1734 ALLOCATE_CPLUS_STRUCT_TYPE (type);
1735 TYPE_RAW_CPLUS_SPECIFIC (type)->vptr_basetype = basetype;
1738 /* Lookup the vptr basetype/fieldno values for TYPE.
1739 If found store vptr_basetype in *BASETYPEP if non-NULL, and return
1740 vptr_fieldno. Also, if found and basetype is from the same objfile,
1742 If not found, return -1 and ignore BASETYPEP.
1743 Callers should be aware that in some cases (for example,
1744 the type or one of its baseclasses is a stub type and we are
1745 debugging a .o file, or the compiler uses DWARF-2 and is not GCC),
1746 this function will not be able to find the
1747 virtual function table pointer, and vptr_fieldno will remain -1 and
1748 vptr_basetype will remain NULL or incomplete. */
1751 get_vptr_fieldno (struct type *type, struct type **basetypep)
1753 type = check_typedef (type);
1755 if (TYPE_VPTR_FIELDNO (type) < 0)
1759 /* We must start at zero in case the first (and only) baseclass
1760 is virtual (and hence we cannot share the table pointer). */
1761 for (i = 0; i < TYPE_N_BASECLASSES (type); i++)
1763 struct type *baseclass = check_typedef (TYPE_BASECLASS (type, i));
1765 struct type *basetype;
1767 fieldno = get_vptr_fieldno (baseclass, &basetype);
1770 /* If the type comes from a different objfile we can't cache
1771 it, it may have a different lifetime. PR 2384 */
1772 if (TYPE_OBJFILE (type) == TYPE_OBJFILE (basetype))
1774 set_type_vptr_fieldno (type, fieldno);
1775 set_type_vptr_basetype (type, basetype);
1778 *basetypep = basetype;
1789 *basetypep = TYPE_VPTR_BASETYPE (type);
1790 return TYPE_VPTR_FIELDNO (type);
1795 stub_noname_complaint (void)
1797 complaint (&symfile_complaints, _("stub type has NULL name"));
1800 /* Worker for is_dynamic_type. */
1803 is_dynamic_type_internal (struct type *type, int top_level)
1805 type = check_typedef (type);
1807 /* We only want to recognize references at the outermost level. */
1808 if (top_level && TYPE_CODE (type) == TYPE_CODE_REF)
1809 type = check_typedef (TYPE_TARGET_TYPE (type));
1811 /* Types that have a dynamic TYPE_DATA_LOCATION are considered
1812 dynamic, even if the type itself is statically defined.
1813 From a user's point of view, this may appear counter-intuitive;
1814 but it makes sense in this context, because the point is to determine
1815 whether any part of the type needs to be resolved before it can
1817 if (TYPE_DATA_LOCATION (type) != NULL
1818 && (TYPE_DATA_LOCATION_KIND (type) == PROP_LOCEXPR
1819 || TYPE_DATA_LOCATION_KIND (type) == PROP_LOCLIST))
1822 switch (TYPE_CODE (type))
1824 case TYPE_CODE_RANGE:
1826 /* A range type is obviously dynamic if it has at least one
1827 dynamic bound. But also consider the range type to be
1828 dynamic when its subtype is dynamic, even if the bounds
1829 of the range type are static. It allows us to assume that
1830 the subtype of a static range type is also static. */
1831 return (!has_static_range (TYPE_RANGE_DATA (type))
1832 || is_dynamic_type_internal (TYPE_TARGET_TYPE (type), 0));
1835 case TYPE_CODE_ARRAY:
1837 gdb_assert (TYPE_NFIELDS (type) == 1);
1839 /* The array is dynamic if either the bounds are dynamic,
1840 or the elements it contains have a dynamic contents. */
1841 if (is_dynamic_type_internal (TYPE_INDEX_TYPE (type), 0))
1843 return is_dynamic_type_internal (TYPE_TARGET_TYPE (type), 0);
1846 case TYPE_CODE_STRUCT:
1847 case TYPE_CODE_UNION:
1851 for (i = 0; i < TYPE_NFIELDS (type); ++i)
1852 if (!field_is_static (&TYPE_FIELD (type, i))
1853 && is_dynamic_type_internal (TYPE_FIELD_TYPE (type, i), 0))
1862 /* See gdbtypes.h. */
1865 is_dynamic_type (struct type *type)
1867 return is_dynamic_type_internal (type, 1);
1870 static struct type *resolve_dynamic_type_internal
1871 (struct type *type, struct property_addr_info *addr_stack, int top_level);
1873 /* Given a dynamic range type (dyn_range_type) and a stack of
1874 struct property_addr_info elements, return a static version
1877 static struct type *
1878 resolve_dynamic_range (struct type *dyn_range_type,
1879 struct property_addr_info *addr_stack)
1882 struct type *static_range_type, *static_target_type;
1883 const struct dynamic_prop *prop;
1884 const struct dwarf2_locexpr_baton *baton;
1885 struct dynamic_prop low_bound, high_bound;
1887 gdb_assert (TYPE_CODE (dyn_range_type) == TYPE_CODE_RANGE);
1889 prop = &TYPE_RANGE_DATA (dyn_range_type)->low;
1890 if (dwarf2_evaluate_property (prop, NULL, addr_stack, &value))
1892 low_bound.kind = PROP_CONST;
1893 low_bound.data.const_val = value;
1897 low_bound.kind = PROP_UNDEFINED;
1898 low_bound.data.const_val = 0;
1901 prop = &TYPE_RANGE_DATA (dyn_range_type)->high;
1902 if (dwarf2_evaluate_property (prop, NULL, addr_stack, &value))
1904 high_bound.kind = PROP_CONST;
1905 high_bound.data.const_val = value;
1907 if (TYPE_RANGE_DATA (dyn_range_type)->flag_upper_bound_is_count)
1908 high_bound.data.const_val
1909 = low_bound.data.const_val + high_bound.data.const_val - 1;
1913 high_bound.kind = PROP_UNDEFINED;
1914 high_bound.data.const_val = 0;
1918 = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (dyn_range_type),
1920 static_range_type = create_range_type (copy_type (dyn_range_type),
1922 &low_bound, &high_bound);
1923 TYPE_RANGE_DATA (static_range_type)->flag_bound_evaluated = 1;
1924 return static_range_type;
1927 /* Resolves dynamic bound values of an array type TYPE to static ones.
1928 ADDR_STACK is a stack of struct property_addr_info to be used
1929 if needed during the dynamic resolution. */
1931 static struct type *
1932 resolve_dynamic_array (struct type *type,
1933 struct property_addr_info *addr_stack)
1936 struct type *elt_type;
1937 struct type *range_type;
1938 struct type *ary_dim;
1940 gdb_assert (TYPE_CODE (type) == TYPE_CODE_ARRAY);
1943 range_type = check_typedef (TYPE_INDEX_TYPE (elt_type));
1944 range_type = resolve_dynamic_range (range_type, addr_stack);
1946 ary_dim = check_typedef (TYPE_TARGET_TYPE (elt_type));
1948 if (ary_dim != NULL && TYPE_CODE (ary_dim) == TYPE_CODE_ARRAY)
1949 elt_type = resolve_dynamic_array (ary_dim, addr_stack);
1951 elt_type = TYPE_TARGET_TYPE (type);
1953 return create_array_type_with_stride (copy_type (type),
1954 elt_type, range_type,
1955 TYPE_FIELD_BITSIZE (type, 0));
1958 /* Resolve dynamic bounds of members of the union TYPE to static
1959 bounds. ADDR_STACK is a stack of struct property_addr_info
1960 to be used if needed during the dynamic resolution. */
1962 static struct type *
1963 resolve_dynamic_union (struct type *type,
1964 struct property_addr_info *addr_stack)
1966 struct type *resolved_type;
1968 unsigned int max_len = 0;
1970 gdb_assert (TYPE_CODE (type) == TYPE_CODE_UNION);
1972 resolved_type = copy_type (type);
1973 TYPE_FIELDS (resolved_type)
1974 = (struct field *) TYPE_ALLOC (resolved_type,
1975 TYPE_NFIELDS (resolved_type)
1976 * sizeof (struct field));
1977 memcpy (TYPE_FIELDS (resolved_type),
1979 TYPE_NFIELDS (resolved_type) * sizeof (struct field));
1980 for (i = 0; i < TYPE_NFIELDS (resolved_type); ++i)
1984 if (field_is_static (&TYPE_FIELD (type, i)))
1987 t = resolve_dynamic_type_internal (TYPE_FIELD_TYPE (resolved_type, i),
1989 TYPE_FIELD_TYPE (resolved_type, i) = t;
1990 if (TYPE_LENGTH (t) > max_len)
1991 max_len = TYPE_LENGTH (t);
1994 TYPE_LENGTH (resolved_type) = max_len;
1995 return resolved_type;
1998 /* Resolve dynamic bounds of members of the struct TYPE to static
1999 bounds. ADDR_STACK is a stack of struct property_addr_info to
2000 be used if needed during the dynamic resolution. */
2002 static struct type *
2003 resolve_dynamic_struct (struct type *type,
2004 struct property_addr_info *addr_stack)
2006 struct type *resolved_type;
2008 unsigned resolved_type_bit_length = 0;
2010 gdb_assert (TYPE_CODE (type) == TYPE_CODE_STRUCT);
2011 gdb_assert (TYPE_NFIELDS (type) > 0);
2013 resolved_type = copy_type (type);
2014 TYPE_FIELDS (resolved_type)
2015 = (struct field *) TYPE_ALLOC (resolved_type,
2016 TYPE_NFIELDS (resolved_type)
2017 * sizeof (struct field));
2018 memcpy (TYPE_FIELDS (resolved_type),
2020 TYPE_NFIELDS (resolved_type) * sizeof (struct field));
2021 for (i = 0; i < TYPE_NFIELDS (resolved_type); ++i)
2023 unsigned new_bit_length;
2024 struct property_addr_info pinfo;
2026 if (field_is_static (&TYPE_FIELD (type, i)))
2029 /* As we know this field is not a static field, the field's
2030 field_loc_kind should be FIELD_LOC_KIND_BITPOS. Verify
2031 this is the case, but only trigger a simple error rather
2032 than an internal error if that fails. While failing
2033 that verification indicates a bug in our code, the error
2034 is not severe enough to suggest to the user he stops
2035 his debugging session because of it. */
2036 if (TYPE_FIELD_LOC_KIND (type, i) != FIELD_LOC_KIND_BITPOS)
2037 error (_("Cannot determine struct field location"
2038 " (invalid location kind)"));
2040 pinfo.type = check_typedef (TYPE_FIELD_TYPE (type, i));
2041 pinfo.valaddr = addr_stack->valaddr;
2042 pinfo.addr = addr_stack->addr;
2043 pinfo.next = addr_stack;
2045 TYPE_FIELD_TYPE (resolved_type, i)
2046 = resolve_dynamic_type_internal (TYPE_FIELD_TYPE (resolved_type, i),
2048 gdb_assert (TYPE_FIELD_LOC_KIND (resolved_type, i)
2049 == FIELD_LOC_KIND_BITPOS);
2051 new_bit_length = TYPE_FIELD_BITPOS (resolved_type, i);
2052 if (TYPE_FIELD_BITSIZE (resolved_type, i) != 0)
2053 new_bit_length += TYPE_FIELD_BITSIZE (resolved_type, i);
2055 new_bit_length += (TYPE_LENGTH (TYPE_FIELD_TYPE (resolved_type, i))
2058 /* Normally, we would use the position and size of the last field
2059 to determine the size of the enclosing structure. But GCC seems
2060 to be encoding the position of some fields incorrectly when
2061 the struct contains a dynamic field that is not placed last.
2062 So we compute the struct size based on the field that has
2063 the highest position + size - probably the best we can do. */
2064 if (new_bit_length > resolved_type_bit_length)
2065 resolved_type_bit_length = new_bit_length;
2068 TYPE_LENGTH (resolved_type)
2069 = (resolved_type_bit_length + TARGET_CHAR_BIT - 1) / TARGET_CHAR_BIT;
2071 /* The Ada language uses this field as a cache for static fixed types: reset
2072 it as RESOLVED_TYPE must have its own static fixed type. */
2073 TYPE_TARGET_TYPE (resolved_type) = NULL;
2075 return resolved_type;
2078 /* Worker for resolved_dynamic_type. */
2080 static struct type *
2081 resolve_dynamic_type_internal (struct type *type,
2082 struct property_addr_info *addr_stack,
2085 struct type *real_type = check_typedef (type);
2086 struct type *resolved_type = type;
2087 struct dynamic_prop *prop;
2090 if (!is_dynamic_type_internal (real_type, top_level))
2093 if (TYPE_CODE (type) == TYPE_CODE_TYPEDEF)
2095 resolved_type = copy_type (type);
2096 TYPE_TARGET_TYPE (resolved_type)
2097 = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (type), addr_stack,
2102 /* Before trying to resolve TYPE, make sure it is not a stub. */
2105 switch (TYPE_CODE (type))
2109 struct property_addr_info pinfo;
2111 pinfo.type = check_typedef (TYPE_TARGET_TYPE (type));
2112 pinfo.valaddr = NULL;
2113 if (addr_stack->valaddr != NULL)
2114 pinfo.addr = extract_typed_address (addr_stack->valaddr, type);
2116 pinfo.addr = read_memory_typed_address (addr_stack->addr, type);
2117 pinfo.next = addr_stack;
2119 resolved_type = copy_type (type);
2120 TYPE_TARGET_TYPE (resolved_type)
2121 = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (type),
2126 case TYPE_CODE_ARRAY:
2127 resolved_type = resolve_dynamic_array (type, addr_stack);
2130 case TYPE_CODE_RANGE:
2131 resolved_type = resolve_dynamic_range (type, addr_stack);
2134 case TYPE_CODE_UNION:
2135 resolved_type = resolve_dynamic_union (type, addr_stack);
2138 case TYPE_CODE_STRUCT:
2139 resolved_type = resolve_dynamic_struct (type, addr_stack);
2144 /* Resolve data_location attribute. */
2145 prop = TYPE_DATA_LOCATION (resolved_type);
2147 && dwarf2_evaluate_property (prop, NULL, addr_stack, &value))
2149 TYPE_DYN_PROP_ADDR (prop) = value;
2150 TYPE_DYN_PROP_KIND (prop) = PROP_CONST;
2153 return resolved_type;
2156 /* See gdbtypes.h */
2159 resolve_dynamic_type (struct type *type, const gdb_byte *valaddr,
2162 struct property_addr_info pinfo
2163 = {check_typedef (type), valaddr, addr, NULL};
2165 return resolve_dynamic_type_internal (type, &pinfo, 1);
2168 /* See gdbtypes.h */
2170 struct dynamic_prop *
2171 get_dyn_prop (enum dynamic_prop_node_kind prop_kind, const struct type *type)
2173 struct dynamic_prop_list *node = TYPE_DYN_PROP_LIST (type);
2175 while (node != NULL)
2177 if (node->prop_kind == prop_kind)
2184 /* See gdbtypes.h */
2187 add_dyn_prop (enum dynamic_prop_node_kind prop_kind, struct dynamic_prop prop,
2188 struct type *type, struct objfile *objfile)
2190 struct dynamic_prop_list *temp;
2192 gdb_assert (TYPE_OBJFILE_OWNED (type));
2194 temp = XOBNEW (&objfile->objfile_obstack, struct dynamic_prop_list);
2195 temp->prop_kind = prop_kind;
2197 temp->next = TYPE_DYN_PROP_LIST (type);
2199 TYPE_DYN_PROP_LIST (type) = temp;
2203 /* Find the real type of TYPE. This function returns the real type,
2204 after removing all layers of typedefs, and completing opaque or stub
2205 types. Completion changes the TYPE argument, but stripping of
2208 Instance flags (e.g. const/volatile) are preserved as typedefs are
2209 stripped. If necessary a new qualified form of the underlying type
2212 NOTE: This will return a typedef if TYPE_TARGET_TYPE for the typedef has
2213 not been computed and we're either in the middle of reading symbols, or
2214 there was no name for the typedef in the debug info.
2216 NOTE: Lookup of opaque types can throw errors for invalid symbol files.
2217 QUITs in the symbol reading code can also throw.
2218 Thus this function can throw an exception.
2220 If TYPE is a TYPE_CODE_TYPEDEF, its length is updated to the length of
2223 If this is a stubbed struct (i.e. declared as struct foo *), see if
2224 we can find a full definition in some other file. If so, copy this
2225 definition, so we can use it in future. There used to be a comment
2226 (but not any code) that if we don't find a full definition, we'd
2227 set a flag so we don't spend time in the future checking the same
2228 type. That would be a mistake, though--we might load in more
2229 symbols which contain a full definition for the type. */
2232 check_typedef (struct type *type)
2234 struct type *orig_type = type;
2235 /* While we're removing typedefs, we don't want to lose qualifiers.
2236 E.g., const/volatile. */
2237 int instance_flags = TYPE_INSTANCE_FLAGS (type);
2241 while (TYPE_CODE (type) == TYPE_CODE_TYPEDEF)
2243 if (!TYPE_TARGET_TYPE (type))
2248 /* It is dangerous to call lookup_symbol if we are currently
2249 reading a symtab. Infinite recursion is one danger. */
2250 if (currently_reading_symtab)
2251 return make_qualified_type (type, instance_flags, NULL);
2253 name = type_name_no_tag (type);
2254 /* FIXME: shouldn't we separately check the TYPE_NAME and
2255 the TYPE_TAG_NAME, and look in STRUCT_DOMAIN and/or
2256 VAR_DOMAIN as appropriate? (this code was written before
2257 TYPE_NAME and TYPE_TAG_NAME were separate). */
2260 stub_noname_complaint ();
2261 return make_qualified_type (type, instance_flags, NULL);
2263 sym = lookup_symbol (name, 0, STRUCT_DOMAIN, 0).symbol;
2265 TYPE_TARGET_TYPE (type) = SYMBOL_TYPE (sym);
2266 else /* TYPE_CODE_UNDEF */
2267 TYPE_TARGET_TYPE (type) = alloc_type_arch (get_type_arch (type));
2269 type = TYPE_TARGET_TYPE (type);
2271 /* Preserve the instance flags as we traverse down the typedef chain.
2273 Handling address spaces/classes is nasty, what do we do if there's a
2275 E.g., what if an outer typedef marks the type as class_1 and an inner
2276 typedef marks the type as class_2?
2277 This is the wrong place to do such error checking. We leave it to
2278 the code that created the typedef in the first place to flag the
2279 error. We just pick the outer address space (akin to letting the
2280 outer cast in a chain of casting win), instead of assuming
2281 "it can't happen". */
2283 const int ALL_SPACES = (TYPE_INSTANCE_FLAG_CODE_SPACE
2284 | TYPE_INSTANCE_FLAG_DATA_SPACE);
2285 const int ALL_CLASSES = TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL;
2286 int new_instance_flags = TYPE_INSTANCE_FLAGS (type);
2288 /* Treat code vs data spaces and address classes separately. */
2289 if ((instance_flags & ALL_SPACES) != 0)
2290 new_instance_flags &= ~ALL_SPACES;
2291 if ((instance_flags & ALL_CLASSES) != 0)
2292 new_instance_flags &= ~ALL_CLASSES;
2294 instance_flags |= new_instance_flags;
2298 /* If this is a struct/class/union with no fields, then check
2299 whether a full definition exists somewhere else. This is for
2300 systems where a type definition with no fields is issued for such
2301 types, instead of identifying them as stub types in the first
2304 if (TYPE_IS_OPAQUE (type)
2305 && opaque_type_resolution
2306 && !currently_reading_symtab)
2308 const char *name = type_name_no_tag (type);
2309 struct type *newtype;
2313 stub_noname_complaint ();
2314 return make_qualified_type (type, instance_flags, NULL);
2316 newtype = lookup_transparent_type (name);
2320 /* If the resolved type and the stub are in the same
2321 objfile, then replace the stub type with the real deal.
2322 But if they're in separate objfiles, leave the stub
2323 alone; we'll just look up the transparent type every time
2324 we call check_typedef. We can't create pointers between
2325 types allocated to different objfiles, since they may
2326 have different lifetimes. Trying to copy NEWTYPE over to
2327 TYPE's objfile is pointless, too, since you'll have to
2328 move over any other types NEWTYPE refers to, which could
2329 be an unbounded amount of stuff. */
2330 if (TYPE_OBJFILE (newtype) == TYPE_OBJFILE (type))
2331 type = make_qualified_type (newtype,
2332 TYPE_INSTANCE_FLAGS (type),
2338 /* Otherwise, rely on the stub flag being set for opaque/stubbed
2340 else if (TYPE_STUB (type) && !currently_reading_symtab)
2342 const char *name = type_name_no_tag (type);
2343 /* FIXME: shouldn't we separately check the TYPE_NAME and the
2344 TYPE_TAG_NAME, and look in STRUCT_DOMAIN and/or VAR_DOMAIN
2345 as appropriate? (this code was written before TYPE_NAME and
2346 TYPE_TAG_NAME were separate). */
2351 stub_noname_complaint ();
2352 return make_qualified_type (type, instance_flags, NULL);
2354 sym = lookup_symbol (name, 0, STRUCT_DOMAIN, 0).symbol;
2357 /* Same as above for opaque types, we can replace the stub
2358 with the complete type only if they are in the same
2360 if (TYPE_OBJFILE (SYMBOL_TYPE(sym)) == TYPE_OBJFILE (type))
2361 type = make_qualified_type (SYMBOL_TYPE (sym),
2362 TYPE_INSTANCE_FLAGS (type),
2365 type = SYMBOL_TYPE (sym);
2369 if (TYPE_TARGET_STUB (type))
2371 struct type *range_type;
2372 struct type *target_type = check_typedef (TYPE_TARGET_TYPE (type));
2374 if (TYPE_STUB (target_type) || TYPE_TARGET_STUB (target_type))
2376 /* Nothing we can do. */
2378 else if (TYPE_CODE (type) == TYPE_CODE_RANGE)
2380 TYPE_LENGTH (type) = TYPE_LENGTH (target_type);
2381 TYPE_TARGET_STUB (type) = 0;
2385 type = make_qualified_type (type, instance_flags, NULL);
2387 /* Cache TYPE_LENGTH for future use. */
2388 TYPE_LENGTH (orig_type) = TYPE_LENGTH (type);
2393 /* Parse a type expression in the string [P..P+LENGTH). If an error
2394 occurs, silently return a void type. */
2396 static struct type *
2397 safe_parse_type (struct gdbarch *gdbarch, char *p, int length)
2399 struct ui_file *saved_gdb_stderr;
2400 struct type *type = NULL; /* Initialize to keep gcc happy. */
2402 /* Suppress error messages. */
2403 saved_gdb_stderr = gdb_stderr;
2404 gdb_stderr = ui_file_new ();
2406 /* Call parse_and_eval_type() without fear of longjmp()s. */
2409 type = parse_and_eval_type (p, length);
2411 CATCH (except, RETURN_MASK_ERROR)
2413 type = builtin_type (gdbarch)->builtin_void;
2417 /* Stop suppressing error messages. */
2418 ui_file_delete (gdb_stderr);
2419 gdb_stderr = saved_gdb_stderr;
2424 /* Ugly hack to convert method stubs into method types.
2426 He ain't kiddin'. This demangles the name of the method into a
2427 string including argument types, parses out each argument type,
2428 generates a string casting a zero to that type, evaluates the
2429 string, and stuffs the resulting type into an argtype vector!!!
2430 Then it knows the type of the whole function (including argument
2431 types for overloading), which info used to be in the stab's but was
2432 removed to hack back the space required for them. */
2435 check_stub_method (struct type *type, int method_id, int signature_id)
2437 struct gdbarch *gdbarch = get_type_arch (type);
2439 char *mangled_name = gdb_mangle_name (type, method_id, signature_id);
2440 char *demangled_name = gdb_demangle (mangled_name,
2441 DMGL_PARAMS | DMGL_ANSI);
2442 char *argtypetext, *p;
2443 int depth = 0, argcount = 1;
2444 struct field *argtypes;
2447 /* Make sure we got back a function string that we can use. */
2449 p = strchr (demangled_name, '(');
2453 if (demangled_name == NULL || p == NULL)
2454 error (_("Internal: Cannot demangle mangled name `%s'."),
2457 /* Now, read in the parameters that define this type. */
2462 if (*p == '(' || *p == '<')
2466 else if (*p == ')' || *p == '>')
2470 else if (*p == ',' && depth == 0)
2478 /* If we read one argument and it was ``void'', don't count it. */
2479 if (startswith (argtypetext, "(void)"))
2482 /* We need one extra slot, for the THIS pointer. */
2484 argtypes = (struct field *)
2485 TYPE_ALLOC (type, (argcount + 1) * sizeof (struct field));
2488 /* Add THIS pointer for non-static methods. */
2489 f = TYPE_FN_FIELDLIST1 (type, method_id);
2490 if (TYPE_FN_FIELD_STATIC_P (f, signature_id))
2494 argtypes[0].type = lookup_pointer_type (type);
2498 if (*p != ')') /* () means no args, skip while. */
2503 if (depth <= 0 && (*p == ',' || *p == ')'))
2505 /* Avoid parsing of ellipsis, they will be handled below.
2506 Also avoid ``void'' as above. */
2507 if (strncmp (argtypetext, "...", p - argtypetext) != 0
2508 && strncmp (argtypetext, "void", p - argtypetext) != 0)
2510 argtypes[argcount].type =
2511 safe_parse_type (gdbarch, argtypetext, p - argtypetext);
2514 argtypetext = p + 1;
2517 if (*p == '(' || *p == '<')
2521 else if (*p == ')' || *p == '>')
2530 TYPE_FN_FIELD_PHYSNAME (f, signature_id) = mangled_name;
2532 /* Now update the old "stub" type into a real type. */
2533 mtype = TYPE_FN_FIELD_TYPE (f, signature_id);
2534 /* MTYPE may currently be a function (TYPE_CODE_FUNC).
2535 We want a method (TYPE_CODE_METHOD). */
2536 smash_to_method_type (mtype, type, TYPE_TARGET_TYPE (mtype),
2537 argtypes, argcount, p[-2] == '.');
2538 TYPE_STUB (mtype) = 0;
2539 TYPE_FN_FIELD_STUB (f, signature_id) = 0;
2541 xfree (demangled_name);
2544 /* This is the external interface to check_stub_method, above. This
2545 function unstubs all of the signatures for TYPE's METHOD_ID method
2546 name. After calling this function TYPE_FN_FIELD_STUB will be
2547 cleared for each signature and TYPE_FN_FIELDLIST_NAME will be
2550 This function unfortunately can not die until stabs do. */
2553 check_stub_method_group (struct type *type, int method_id)
2555 int len = TYPE_FN_FIELDLIST_LENGTH (type, method_id);
2556 struct fn_field *f = TYPE_FN_FIELDLIST1 (type, method_id);
2557 int j, found_stub = 0;
2559 for (j = 0; j < len; j++)
2560 if (TYPE_FN_FIELD_STUB (f, j))
2563 check_stub_method (type, method_id, j);
2566 /* GNU v3 methods with incorrect names were corrected when we read
2567 in type information, because it was cheaper to do it then. The
2568 only GNU v2 methods with incorrect method names are operators and
2569 destructors; destructors were also corrected when we read in type
2572 Therefore the only thing we need to handle here are v2 operator
2574 if (found_stub && !startswith (TYPE_FN_FIELD_PHYSNAME (f, 0), "_Z"))
2577 char dem_opname[256];
2579 ret = cplus_demangle_opname (TYPE_FN_FIELDLIST_NAME (type,
2581 dem_opname, DMGL_ANSI);
2583 ret = cplus_demangle_opname (TYPE_FN_FIELDLIST_NAME (type,
2587 TYPE_FN_FIELDLIST_NAME (type, method_id) = xstrdup (dem_opname);
2591 /* Ensure it is in .rodata (if available) by workarounding GCC PR 44690. */
2592 const struct cplus_struct_type cplus_struct_default = { };
2595 allocate_cplus_struct_type (struct type *type)
2597 if (HAVE_CPLUS_STRUCT (type))
2598 /* Structure was already allocated. Nothing more to do. */
2601 TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_CPLUS_STUFF;
2602 TYPE_RAW_CPLUS_SPECIFIC (type) = (struct cplus_struct_type *)
2603 TYPE_ALLOC (type, sizeof (struct cplus_struct_type));
2604 *(TYPE_RAW_CPLUS_SPECIFIC (type)) = cplus_struct_default;
2605 set_type_vptr_fieldno (type, -1);
2608 const struct gnat_aux_type gnat_aux_default =
2611 /* Set the TYPE's type-specific kind to TYPE_SPECIFIC_GNAT_STUFF,
2612 and allocate the associated gnat-specific data. The gnat-specific
2613 data is also initialized to gnat_aux_default. */
2616 allocate_gnat_aux_type (struct type *type)
2618 TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_GNAT_STUFF;
2619 TYPE_GNAT_SPECIFIC (type) = (struct gnat_aux_type *)
2620 TYPE_ALLOC (type, sizeof (struct gnat_aux_type));
2621 *(TYPE_GNAT_SPECIFIC (type)) = gnat_aux_default;
2624 /* Helper function to initialize the standard scalar types.
2626 If NAME is non-NULL, then it is used to initialize the type name.
2627 Note that NAME is not copied; it is required to have a lifetime at
2628 least as long as OBJFILE. */
2631 init_type (enum type_code code, int length, int flags,
2632 const char *name, struct objfile *objfile)
2636 type = alloc_type (objfile);
2637 TYPE_CODE (type) = code;
2638 TYPE_LENGTH (type) = length;
2640 gdb_assert (!(flags & (TYPE_FLAG_MIN - 1)));
2641 if (flags & TYPE_FLAG_UNSIGNED)
2642 TYPE_UNSIGNED (type) = 1;
2643 if (flags & TYPE_FLAG_NOSIGN)
2644 TYPE_NOSIGN (type) = 1;
2645 if (flags & TYPE_FLAG_STUB)
2646 TYPE_STUB (type) = 1;
2647 if (flags & TYPE_FLAG_TARGET_STUB)
2648 TYPE_TARGET_STUB (type) = 1;
2649 if (flags & TYPE_FLAG_STATIC)
2650 TYPE_STATIC (type) = 1;
2651 if (flags & TYPE_FLAG_PROTOTYPED)
2652 TYPE_PROTOTYPED (type) = 1;
2653 if (flags & TYPE_FLAG_INCOMPLETE)
2654 TYPE_INCOMPLETE (type) = 1;
2655 if (flags & TYPE_FLAG_VARARGS)
2656 TYPE_VARARGS (type) = 1;
2657 if (flags & TYPE_FLAG_VECTOR)
2658 TYPE_VECTOR (type) = 1;
2659 if (flags & TYPE_FLAG_STUB_SUPPORTED)
2660 TYPE_STUB_SUPPORTED (type) = 1;
2661 if (flags & TYPE_FLAG_FIXED_INSTANCE)
2662 TYPE_FIXED_INSTANCE (type) = 1;
2663 if (flags & TYPE_FLAG_GNU_IFUNC)
2664 TYPE_GNU_IFUNC (type) = 1;
2666 TYPE_NAME (type) = name;
2670 if (name && strcmp (name, "char") == 0)
2671 TYPE_NOSIGN (type) = 1;
2675 case TYPE_CODE_STRUCT:
2676 case TYPE_CODE_UNION:
2677 case TYPE_CODE_NAMESPACE:
2678 INIT_CPLUS_SPECIFIC (type);
2681 TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_FLOATFORMAT;
2683 case TYPE_CODE_FUNC:
2684 INIT_FUNC_SPECIFIC (type);
2690 /* Queries on types. */
2693 can_dereference (struct type *t)
2695 /* FIXME: Should we return true for references as well as
2697 t = check_typedef (t);
2700 && TYPE_CODE (t) == TYPE_CODE_PTR
2701 && TYPE_CODE (TYPE_TARGET_TYPE (t)) != TYPE_CODE_VOID);
2705 is_integral_type (struct type *t)
2707 t = check_typedef (t);
2710 && ((TYPE_CODE (t) == TYPE_CODE_INT)
2711 || (TYPE_CODE (t) == TYPE_CODE_ENUM)
2712 || (TYPE_CODE (t) == TYPE_CODE_FLAGS)
2713 || (TYPE_CODE (t) == TYPE_CODE_CHAR)
2714 || (TYPE_CODE (t) == TYPE_CODE_RANGE)
2715 || (TYPE_CODE (t) == TYPE_CODE_BOOL)));
2718 /* Return true if TYPE is scalar. */
2721 is_scalar_type (struct type *type)
2723 type = check_typedef (type);
2725 switch (TYPE_CODE (type))
2727 case TYPE_CODE_ARRAY:
2728 case TYPE_CODE_STRUCT:
2729 case TYPE_CODE_UNION:
2731 case TYPE_CODE_STRING:
2738 /* Return true if T is scalar, or a composite type which in practice has
2739 the memory layout of a scalar type. E.g., an array or struct with only
2740 one scalar element inside it, or a union with only scalar elements. */
2743 is_scalar_type_recursive (struct type *t)
2745 t = check_typedef (t);
2747 if (is_scalar_type (t))
2749 /* Are we dealing with an array or string of known dimensions? */
2750 else if ((TYPE_CODE (t) == TYPE_CODE_ARRAY
2751 || TYPE_CODE (t) == TYPE_CODE_STRING) && TYPE_NFIELDS (t) == 1
2752 && TYPE_CODE (TYPE_INDEX_TYPE (t)) == TYPE_CODE_RANGE)
2754 LONGEST low_bound, high_bound;
2755 struct type *elt_type = check_typedef (TYPE_TARGET_TYPE (t));
2757 get_discrete_bounds (TYPE_INDEX_TYPE (t), &low_bound, &high_bound);
2759 return high_bound == low_bound && is_scalar_type_recursive (elt_type);
2761 /* Are we dealing with a struct with one element? */
2762 else if (TYPE_CODE (t) == TYPE_CODE_STRUCT && TYPE_NFIELDS (t) == 1)
2763 return is_scalar_type_recursive (TYPE_FIELD_TYPE (t, 0));
2764 else if (TYPE_CODE (t) == TYPE_CODE_UNION)
2766 int i, n = TYPE_NFIELDS (t);
2768 /* If all elements of the union are scalar, then the union is scalar. */
2769 for (i = 0; i < n; i++)
2770 if (!is_scalar_type_recursive (TYPE_FIELD_TYPE (t, i)))
2779 /* Return true is T is a class or a union. False otherwise. */
2782 class_or_union_p (const struct type *t)
2784 return (TYPE_CODE (t) == TYPE_CODE_STRUCT
2785 || TYPE_CODE (t) == TYPE_CODE_UNION);
2788 /* A helper function which returns true if types A and B represent the
2789 "same" class type. This is true if the types have the same main
2790 type, or the same name. */
2793 class_types_same_p (const struct type *a, const struct type *b)
2795 return (TYPE_MAIN_TYPE (a) == TYPE_MAIN_TYPE (b)
2796 || (TYPE_NAME (a) && TYPE_NAME (b)
2797 && !strcmp (TYPE_NAME (a), TYPE_NAME (b))));
2800 /* If BASE is an ancestor of DCLASS return the distance between them.
2801 otherwise return -1;
2805 class B: public A {};
2806 class C: public B {};
2809 distance_to_ancestor (A, A, 0) = 0
2810 distance_to_ancestor (A, B, 0) = 1
2811 distance_to_ancestor (A, C, 0) = 2
2812 distance_to_ancestor (A, D, 0) = 3
2814 If PUBLIC is 1 then only public ancestors are considered,
2815 and the function returns the distance only if BASE is a public ancestor
2819 distance_to_ancestor (A, D, 1) = -1. */
2822 distance_to_ancestor (struct type *base, struct type *dclass, int is_public)
2827 base = check_typedef (base);
2828 dclass = check_typedef (dclass);
2830 if (class_types_same_p (base, dclass))
2833 for (i = 0; i < TYPE_N_BASECLASSES (dclass); i++)
2835 if (is_public && ! BASETYPE_VIA_PUBLIC (dclass, i))
2838 d = distance_to_ancestor (base, TYPE_BASECLASS (dclass, i), is_public);
2846 /* Check whether BASE is an ancestor or base class or DCLASS
2847 Return 1 if so, and 0 if not.
2848 Note: If BASE and DCLASS are of the same type, this function
2849 will return 1. So for some class A, is_ancestor (A, A) will
2853 is_ancestor (struct type *base, struct type *dclass)
2855 return distance_to_ancestor (base, dclass, 0) >= 0;
2858 /* Like is_ancestor, but only returns true when BASE is a public
2859 ancestor of DCLASS. */
2862 is_public_ancestor (struct type *base, struct type *dclass)
2864 return distance_to_ancestor (base, dclass, 1) >= 0;
2867 /* A helper function for is_unique_ancestor. */
2870 is_unique_ancestor_worker (struct type *base, struct type *dclass,
2872 const gdb_byte *valaddr, int embedded_offset,
2873 CORE_ADDR address, struct value *val)
2877 base = check_typedef (base);
2878 dclass = check_typedef (dclass);
2880 for (i = 0; i < TYPE_N_BASECLASSES (dclass) && count < 2; ++i)
2885 iter = check_typedef (TYPE_BASECLASS (dclass, i));
2887 this_offset = baseclass_offset (dclass, i, valaddr, embedded_offset,
2890 if (class_types_same_p (base, iter))
2892 /* If this is the first subclass, set *OFFSET and set count
2893 to 1. Otherwise, if this is at the same offset as
2894 previous instances, do nothing. Otherwise, increment
2898 *offset = this_offset;
2901 else if (this_offset == *offset)
2909 count += is_unique_ancestor_worker (base, iter, offset,
2911 embedded_offset + this_offset,
2918 /* Like is_ancestor, but only returns true if BASE is a unique base
2919 class of the type of VAL. */
2922 is_unique_ancestor (struct type *base, struct value *val)
2926 return is_unique_ancestor_worker (base, value_type (val), &offset,
2927 value_contents_for_printing (val),
2928 value_embedded_offset (val),
2929 value_address (val), val) == 1;
2933 /* Overload resolution. */
2935 /* Return the sum of the rank of A with the rank of B. */
2938 sum_ranks (struct rank a, struct rank b)
2941 c.rank = a.rank + b.rank;
2942 c.subrank = a.subrank + b.subrank;
2946 /* Compare rank A and B and return:
2948 1 if a is better than b
2949 -1 if b is better than a. */
2952 compare_ranks (struct rank a, struct rank b)
2954 if (a.rank == b.rank)
2956 if (a.subrank == b.subrank)
2958 if (a.subrank < b.subrank)
2960 if (a.subrank > b.subrank)
2964 if (a.rank < b.rank)
2967 /* a.rank > b.rank */
2971 /* Functions for overload resolution begin here. */
2973 /* Compare two badness vectors A and B and return the result.
2974 0 => A and B are identical
2975 1 => A and B are incomparable
2976 2 => A is better than B
2977 3 => A is worse than B */
2980 compare_badness (struct badness_vector *a, struct badness_vector *b)
2984 short found_pos = 0; /* any positives in c? */
2985 short found_neg = 0; /* any negatives in c? */
2987 /* differing lengths => incomparable */
2988 if (a->length != b->length)
2991 /* Subtract b from a */
2992 for (i = 0; i < a->length; i++)
2994 tmp = compare_ranks (b->rank[i], a->rank[i]);
3004 return 1; /* incomparable */
3006 return 3; /* A > B */
3012 return 2; /* A < B */
3014 return 0; /* A == B */
3018 /* Rank a function by comparing its parameter types (PARMS, length
3019 NPARMS), to the types of an argument list (ARGS, length NARGS).
3020 Return a pointer to a badness vector. This has NARGS + 1
3023 struct badness_vector *
3024 rank_function (struct type **parms, int nparms,
3025 struct value **args, int nargs)
3028 struct badness_vector *bv = XNEW (struct badness_vector);
3029 int min_len = nparms < nargs ? nparms : nargs;
3031 bv->length = nargs + 1; /* add 1 for the length-match rank. */
3032 bv->rank = XNEWVEC (struct rank, nargs + 1);
3034 /* First compare the lengths of the supplied lists.
3035 If there is a mismatch, set it to a high value. */
3037 /* pai/1997-06-03 FIXME: when we have debug info about default
3038 arguments and ellipsis parameter lists, we should consider those
3039 and rank the length-match more finely. */
3041 LENGTH_MATCH (bv) = (nargs != nparms)
3042 ? LENGTH_MISMATCH_BADNESS
3043 : EXACT_MATCH_BADNESS;
3045 /* Now rank all the parameters of the candidate function. */
3046 for (i = 1; i <= min_len; i++)
3047 bv->rank[i] = rank_one_type (parms[i - 1], value_type (args[i - 1]),
3050 /* If more arguments than parameters, add dummy entries. */
3051 for (i = min_len + 1; i <= nargs; i++)
3052 bv->rank[i] = TOO_FEW_PARAMS_BADNESS;
3057 /* Compare the names of two integer types, assuming that any sign
3058 qualifiers have been checked already. We do it this way because
3059 there may be an "int" in the name of one of the types. */
3062 integer_types_same_name_p (const char *first, const char *second)
3064 int first_p, second_p;
3066 /* If both are shorts, return 1; if neither is a short, keep
3068 first_p = (strstr (first, "short") != NULL);
3069 second_p = (strstr (second, "short") != NULL);
3070 if (first_p && second_p)
3072 if (first_p || second_p)
3075 /* Likewise for long. */
3076 first_p = (strstr (first, "long") != NULL);
3077 second_p = (strstr (second, "long") != NULL);
3078 if (first_p && second_p)
3080 if (first_p || second_p)
3083 /* Likewise for char. */
3084 first_p = (strstr (first, "char") != NULL);
3085 second_p = (strstr (second, "char") != NULL);
3086 if (first_p && second_p)
3088 if (first_p || second_p)
3091 /* They must both be ints. */
3095 /* Compares type A to type B returns 1 if the represent the same type
3099 types_equal (struct type *a, struct type *b)
3101 /* Identical type pointers. */
3102 /* However, this still doesn't catch all cases of same type for b
3103 and a. The reason is that builtin types are different from
3104 the same ones constructed from the object. */
3108 /* Resolve typedefs */
3109 if (TYPE_CODE (a) == TYPE_CODE_TYPEDEF)
3110 a = check_typedef (a);
3111 if (TYPE_CODE (b) == TYPE_CODE_TYPEDEF)
3112 b = check_typedef (b);
3114 /* If after resolving typedefs a and b are not of the same type
3115 code then they are not equal. */
3116 if (TYPE_CODE (a) != TYPE_CODE (b))
3119 /* If a and b are both pointers types or both reference types then
3120 they are equal of the same type iff the objects they refer to are
3121 of the same type. */
3122 if (TYPE_CODE (a) == TYPE_CODE_PTR
3123 || TYPE_CODE (a) == TYPE_CODE_REF)
3124 return types_equal (TYPE_TARGET_TYPE (a),
3125 TYPE_TARGET_TYPE (b));
3127 /* Well, damnit, if the names are exactly the same, I'll say they
3128 are exactly the same. This happens when we generate method
3129 stubs. The types won't point to the same address, but they
3130 really are the same. */
3132 if (TYPE_NAME (a) && TYPE_NAME (b)
3133 && strcmp (TYPE_NAME (a), TYPE_NAME (b)) == 0)
3136 /* Check if identical after resolving typedefs. */
3140 /* Two function types are equal if their argument and return types
3142 if (TYPE_CODE (a) == TYPE_CODE_FUNC)
3146 if (TYPE_NFIELDS (a) != TYPE_NFIELDS (b))
3149 if (!types_equal (TYPE_TARGET_TYPE (a), TYPE_TARGET_TYPE (b)))
3152 for (i = 0; i < TYPE_NFIELDS (a); ++i)
3153 if (!types_equal (TYPE_FIELD_TYPE (a, i), TYPE_FIELD_TYPE (b, i)))
3162 /* Deep comparison of types. */
3164 /* An entry in the type-equality bcache. */
3166 typedef struct type_equality_entry
3168 struct type *type1, *type2;
3169 } type_equality_entry_d;
3171 DEF_VEC_O (type_equality_entry_d);
3173 /* A helper function to compare two strings. Returns 1 if they are
3174 the same, 0 otherwise. Handles NULLs properly. */
3177 compare_maybe_null_strings (const char *s, const char *t)
3179 if (s == NULL && t != NULL)
3181 else if (s != NULL && t == NULL)
3183 else if (s == NULL && t== NULL)
3185 return strcmp (s, t) == 0;
3188 /* A helper function for check_types_worklist that checks two types for
3189 "deep" equality. Returns non-zero if the types are considered the
3190 same, zero otherwise. */
3193 check_types_equal (struct type *type1, struct type *type2,
3194 VEC (type_equality_entry_d) **worklist)
3196 type1 = check_typedef (type1);
3197 type2 = check_typedef (type2);
3202 if (TYPE_CODE (type1) != TYPE_CODE (type2)
3203 || TYPE_LENGTH (type1) != TYPE_LENGTH (type2)
3204 || TYPE_UNSIGNED (type1) != TYPE_UNSIGNED (type2)
3205 || TYPE_NOSIGN (type1) != TYPE_NOSIGN (type2)
3206 || TYPE_VARARGS (type1) != TYPE_VARARGS (type2)
3207 || TYPE_VECTOR (type1) != TYPE_VECTOR (type2)
3208 || TYPE_NOTTEXT (type1) != TYPE_NOTTEXT (type2)
3209 || TYPE_INSTANCE_FLAGS (type1) != TYPE_INSTANCE_FLAGS (type2)
3210 || TYPE_NFIELDS (type1) != TYPE_NFIELDS (type2))
3213 if (!compare_maybe_null_strings (TYPE_TAG_NAME (type1),
3214 TYPE_TAG_NAME (type2)))
3216 if (!compare_maybe_null_strings (TYPE_NAME (type1), TYPE_NAME (type2)))
3219 if (TYPE_CODE (type1) == TYPE_CODE_RANGE)
3221 if (memcmp (TYPE_RANGE_DATA (type1), TYPE_RANGE_DATA (type2),
3222 sizeof (*TYPE_RANGE_DATA (type1))) != 0)
3229 for (i = 0; i < TYPE_NFIELDS (type1); ++i)
3231 const struct field *field1 = &TYPE_FIELD (type1, i);
3232 const struct field *field2 = &TYPE_FIELD (type2, i);
3233 struct type_equality_entry entry;
3235 if (FIELD_ARTIFICIAL (*field1) != FIELD_ARTIFICIAL (*field2)
3236 || FIELD_BITSIZE (*field1) != FIELD_BITSIZE (*field2)
3237 || FIELD_LOC_KIND (*field1) != FIELD_LOC_KIND (*field2))
3239 if (!compare_maybe_null_strings (FIELD_NAME (*field1),
3240 FIELD_NAME (*field2)))
3242 switch (FIELD_LOC_KIND (*field1))
3244 case FIELD_LOC_KIND_BITPOS:
3245 if (FIELD_BITPOS (*field1) != FIELD_BITPOS (*field2))
3248 case FIELD_LOC_KIND_ENUMVAL:
3249 if (FIELD_ENUMVAL (*field1) != FIELD_ENUMVAL (*field2))
3252 case FIELD_LOC_KIND_PHYSADDR:
3253 if (FIELD_STATIC_PHYSADDR (*field1)
3254 != FIELD_STATIC_PHYSADDR (*field2))
3257 case FIELD_LOC_KIND_PHYSNAME:
3258 if (!compare_maybe_null_strings (FIELD_STATIC_PHYSNAME (*field1),
3259 FIELD_STATIC_PHYSNAME (*field2)))
3262 case FIELD_LOC_KIND_DWARF_BLOCK:
3264 struct dwarf2_locexpr_baton *block1, *block2;
3266 block1 = FIELD_DWARF_BLOCK (*field1);
3267 block2 = FIELD_DWARF_BLOCK (*field2);
3268 if (block1->per_cu != block2->per_cu
3269 || block1->size != block2->size
3270 || memcmp (block1->data, block2->data, block1->size) != 0)
3275 internal_error (__FILE__, __LINE__, _("Unsupported field kind "
3276 "%d by check_types_equal"),
3277 FIELD_LOC_KIND (*field1));
3280 entry.type1 = FIELD_TYPE (*field1);
3281 entry.type2 = FIELD_TYPE (*field2);
3282 VEC_safe_push (type_equality_entry_d, *worklist, &entry);
3286 if (TYPE_TARGET_TYPE (type1) != NULL)
3288 struct type_equality_entry entry;
3290 if (TYPE_TARGET_TYPE (type2) == NULL)
3293 entry.type1 = TYPE_TARGET_TYPE (type1);
3294 entry.type2 = TYPE_TARGET_TYPE (type2);
3295 VEC_safe_push (type_equality_entry_d, *worklist, &entry);
3297 else if (TYPE_TARGET_TYPE (type2) != NULL)
3303 /* Check types on a worklist for equality. Returns zero if any pair
3304 is not equal, non-zero if they are all considered equal. */
3307 check_types_worklist (VEC (type_equality_entry_d) **worklist,
3308 struct bcache *cache)
3310 while (!VEC_empty (type_equality_entry_d, *worklist))
3312 struct type_equality_entry entry;
3315 entry = *VEC_last (type_equality_entry_d, *worklist);
3316 VEC_pop (type_equality_entry_d, *worklist);
3318 /* If the type pair has already been visited, we know it is
3320 bcache_full (&entry, sizeof (entry), cache, &added);
3324 if (check_types_equal (entry.type1, entry.type2, worklist) == 0)
3331 /* Return non-zero if types TYPE1 and TYPE2 are equal, as determined by a
3332 "deep comparison". Otherwise return zero. */
3335 types_deeply_equal (struct type *type1, struct type *type2)
3337 struct gdb_exception except = exception_none;
3339 struct bcache *cache;
3340 VEC (type_equality_entry_d) *worklist = NULL;
3341 struct type_equality_entry entry;
3343 gdb_assert (type1 != NULL && type2 != NULL);
3345 /* Early exit for the simple case. */
3349 cache = bcache_xmalloc (NULL, NULL);
3351 entry.type1 = type1;
3352 entry.type2 = type2;
3353 VEC_safe_push (type_equality_entry_d, worklist, &entry);
3355 /* check_types_worklist calls several nested helper functions, some
3356 of which can raise a GDB exception, so we just check and rethrow
3357 here. If there is a GDB exception, a comparison is not capable
3358 (or trusted), so exit. */
3361 result = check_types_worklist (&worklist, cache);
3363 CATCH (ex, RETURN_MASK_ALL)
3369 bcache_xfree (cache);
3370 VEC_free (type_equality_entry_d, worklist);
3372 /* Rethrow if there was a problem. */
3373 if (except.reason < 0)
3374 throw_exception (except);
3379 /* Compare one type (PARM) for compatibility with another (ARG).
3380 * PARM is intended to be the parameter type of a function; and
3381 * ARG is the supplied argument's type. This function tests if
3382 * the latter can be converted to the former.
3383 * VALUE is the argument's value or NULL if none (or called recursively)
3385 * Return 0 if they are identical types;
3386 * Otherwise, return an integer which corresponds to how compatible
3387 * PARM is to ARG. The higher the return value, the worse the match.
3388 * Generally the "bad" conversions are all uniformly assigned a 100. */
3391 rank_one_type (struct type *parm, struct type *arg, struct value *value)
3393 struct rank rank = {0,0};
3395 if (types_equal (parm, arg))
3396 return EXACT_MATCH_BADNESS;
3398 /* Resolve typedefs */
3399 if (TYPE_CODE (parm) == TYPE_CODE_TYPEDEF)
3400 parm = check_typedef (parm);
3401 if (TYPE_CODE (arg) == TYPE_CODE_TYPEDEF)
3402 arg = check_typedef (arg);
3404 /* See through references, since we can almost make non-references
3406 if (TYPE_CODE (arg) == TYPE_CODE_REF)
3407 return (sum_ranks (rank_one_type (parm, TYPE_TARGET_TYPE (arg), NULL),
3408 REFERENCE_CONVERSION_BADNESS));
3409 if (TYPE_CODE (parm) == TYPE_CODE_REF)
3410 return (sum_ranks (rank_one_type (TYPE_TARGET_TYPE (parm), arg, NULL),
3411 REFERENCE_CONVERSION_BADNESS));
3413 /* Debugging only. */
3414 fprintf_filtered (gdb_stderr,
3415 "------ Arg is %s [%d], parm is %s [%d]\n",
3416 TYPE_NAME (arg), TYPE_CODE (arg),
3417 TYPE_NAME (parm), TYPE_CODE (parm));
3419 /* x -> y means arg of type x being supplied for parameter of type y. */
3421 switch (TYPE_CODE (parm))
3424 switch (TYPE_CODE (arg))
3428 /* Allowed pointer conversions are:
3429 (a) pointer to void-pointer conversion. */
3430 if (TYPE_CODE (TYPE_TARGET_TYPE (parm)) == TYPE_CODE_VOID)
3431 return VOID_PTR_CONVERSION_BADNESS;
3433 /* (b) pointer to ancestor-pointer conversion. */
3434 rank.subrank = distance_to_ancestor (TYPE_TARGET_TYPE (parm),
3435 TYPE_TARGET_TYPE (arg),
3437 if (rank.subrank >= 0)
3438 return sum_ranks (BASE_PTR_CONVERSION_BADNESS, rank);
3440 return INCOMPATIBLE_TYPE_BADNESS;
3441 case TYPE_CODE_ARRAY:
3442 if (types_equal (TYPE_TARGET_TYPE (parm),
3443 TYPE_TARGET_TYPE (arg)))
3444 return EXACT_MATCH_BADNESS;
3445 return INCOMPATIBLE_TYPE_BADNESS;
3446 case TYPE_CODE_FUNC:
3447 return rank_one_type (TYPE_TARGET_TYPE (parm), arg, NULL);
3449 if (value != NULL && TYPE_CODE (value_type (value)) == TYPE_CODE_INT)
3451 if (value_as_long (value) == 0)
3453 /* Null pointer conversion: allow it to be cast to a pointer.
3454 [4.10.1 of C++ standard draft n3290] */
3455 return NULL_POINTER_CONVERSION_BADNESS;
3459 /* If type checking is disabled, allow the conversion. */
3460 if (!strict_type_checking)
3461 return NS_INTEGER_POINTER_CONVERSION_BADNESS;
3465 case TYPE_CODE_ENUM:
3466 case TYPE_CODE_FLAGS:
3467 case TYPE_CODE_CHAR:
3468 case TYPE_CODE_RANGE:
3469 case TYPE_CODE_BOOL:
3471 return INCOMPATIBLE_TYPE_BADNESS;
3473 case TYPE_CODE_ARRAY:
3474 switch (TYPE_CODE (arg))
3477 case TYPE_CODE_ARRAY:
3478 return rank_one_type (TYPE_TARGET_TYPE (parm),
3479 TYPE_TARGET_TYPE (arg), NULL);
3481 return INCOMPATIBLE_TYPE_BADNESS;
3483 case TYPE_CODE_FUNC:
3484 switch (TYPE_CODE (arg))
3486 case TYPE_CODE_PTR: /* funcptr -> func */
3487 return rank_one_type (parm, TYPE_TARGET_TYPE (arg), NULL);
3489 return INCOMPATIBLE_TYPE_BADNESS;
3492 switch (TYPE_CODE (arg))
3495 if (TYPE_LENGTH (arg) == TYPE_LENGTH (parm))
3497 /* Deal with signed, unsigned, and plain chars and
3498 signed and unsigned ints. */
3499 if (TYPE_NOSIGN (parm))
3501 /* This case only for character types. */
3502 if (TYPE_NOSIGN (arg))
3503 return EXACT_MATCH_BADNESS; /* plain char -> plain char */
3504 else /* signed/unsigned char -> plain char */
3505 return INTEGER_CONVERSION_BADNESS;
3507 else if (TYPE_UNSIGNED (parm))
3509 if (TYPE_UNSIGNED (arg))
3511 /* unsigned int -> unsigned int, or
3512 unsigned long -> unsigned long */
3513 if (integer_types_same_name_p (TYPE_NAME (parm),
3515 return EXACT_MATCH_BADNESS;
3516 else if (integer_types_same_name_p (TYPE_NAME (arg),
3518 && integer_types_same_name_p (TYPE_NAME (parm),
3520 /* unsigned int -> unsigned long */
3521 return INTEGER_PROMOTION_BADNESS;
3523 /* unsigned long -> unsigned int */
3524 return INTEGER_CONVERSION_BADNESS;
3528 if (integer_types_same_name_p (TYPE_NAME (arg),
3530 && integer_types_same_name_p (TYPE_NAME (parm),
3532 /* signed long -> unsigned int */
3533 return INTEGER_CONVERSION_BADNESS;
3535 /* signed int/long -> unsigned int/long */
3536 return INTEGER_CONVERSION_BADNESS;
3539 else if (!TYPE_NOSIGN (arg) && !TYPE_UNSIGNED (arg))
3541 if (integer_types_same_name_p (TYPE_NAME (parm),
3543 return EXACT_MATCH_BADNESS;
3544 else if (integer_types_same_name_p (TYPE_NAME (arg),
3546 && integer_types_same_name_p (TYPE_NAME (parm),
3548 return INTEGER_PROMOTION_BADNESS;
3550 return INTEGER_CONVERSION_BADNESS;
3553 return INTEGER_CONVERSION_BADNESS;
3555 else if (TYPE_LENGTH (arg) < TYPE_LENGTH (parm))
3556 return INTEGER_PROMOTION_BADNESS;
3558 return INTEGER_CONVERSION_BADNESS;
3559 case TYPE_CODE_ENUM:
3560 case TYPE_CODE_FLAGS:
3561 case TYPE_CODE_CHAR:
3562 case TYPE_CODE_RANGE:
3563 case TYPE_CODE_BOOL:
3564 if (TYPE_DECLARED_CLASS (arg))
3565 return INCOMPATIBLE_TYPE_BADNESS;
3566 return INTEGER_PROMOTION_BADNESS;
3568 return INT_FLOAT_CONVERSION_BADNESS;
3570 return NS_POINTER_CONVERSION_BADNESS;
3572 return INCOMPATIBLE_TYPE_BADNESS;
3575 case TYPE_CODE_ENUM:
3576 switch (TYPE_CODE (arg))
3579 case TYPE_CODE_CHAR:
3580 case TYPE_CODE_RANGE:
3581 case TYPE_CODE_BOOL:
3582 case TYPE_CODE_ENUM:
3583 if (TYPE_DECLARED_CLASS (parm) || TYPE_DECLARED_CLASS (arg))
3584 return INCOMPATIBLE_TYPE_BADNESS;
3585 return INTEGER_CONVERSION_BADNESS;
3587 return INT_FLOAT_CONVERSION_BADNESS;
3589 return INCOMPATIBLE_TYPE_BADNESS;
3592 case TYPE_CODE_CHAR:
3593 switch (TYPE_CODE (arg))
3595 case TYPE_CODE_RANGE:
3596 case TYPE_CODE_BOOL:
3597 case TYPE_CODE_ENUM:
3598 if (TYPE_DECLARED_CLASS (arg))
3599 return INCOMPATIBLE_TYPE_BADNESS;
3600 return INTEGER_CONVERSION_BADNESS;
3602 return INT_FLOAT_CONVERSION_BADNESS;
3604 if (TYPE_LENGTH (arg) > TYPE_LENGTH (parm))
3605 return INTEGER_CONVERSION_BADNESS;
3606 else if (TYPE_LENGTH (arg) < TYPE_LENGTH (parm))
3607 return INTEGER_PROMOTION_BADNESS;
3608 /* >>> !! else fall through !! <<< */
3609 case TYPE_CODE_CHAR:
3610 /* Deal with signed, unsigned, and plain chars for C++ and
3611 with int cases falling through from previous case. */
3612 if (TYPE_NOSIGN (parm))
3614 if (TYPE_NOSIGN (arg))
3615 return EXACT_MATCH_BADNESS;
3617 return INTEGER_CONVERSION_BADNESS;
3619 else if (TYPE_UNSIGNED (parm))
3621 if (TYPE_UNSIGNED (arg))
3622 return EXACT_MATCH_BADNESS;
3624 return INTEGER_PROMOTION_BADNESS;
3626 else if (!TYPE_NOSIGN (arg) && !TYPE_UNSIGNED (arg))
3627 return EXACT_MATCH_BADNESS;
3629 return INTEGER_CONVERSION_BADNESS;
3631 return INCOMPATIBLE_TYPE_BADNESS;
3634 case TYPE_CODE_RANGE:
3635 switch (TYPE_CODE (arg))
3638 case TYPE_CODE_CHAR:
3639 case TYPE_CODE_RANGE:
3640 case TYPE_CODE_BOOL:
3641 case TYPE_CODE_ENUM:
3642 return INTEGER_CONVERSION_BADNESS;
3644 return INT_FLOAT_CONVERSION_BADNESS;
3646 return INCOMPATIBLE_TYPE_BADNESS;
3649 case TYPE_CODE_BOOL:
3650 switch (TYPE_CODE (arg))
3652 /* n3290 draft, section 4.12.1 (conv.bool):
3654 "A prvalue of arithmetic, unscoped enumeration, pointer, or
3655 pointer to member type can be converted to a prvalue of type
3656 bool. A zero value, null pointer value, or null member pointer
3657 value is converted to false; any other value is converted to
3658 true. A prvalue of type std::nullptr_t can be converted to a
3659 prvalue of type bool; the resulting value is false." */
3661 case TYPE_CODE_CHAR:
3662 case TYPE_CODE_ENUM:
3664 case TYPE_CODE_MEMBERPTR:
3666 return BOOL_CONVERSION_BADNESS;
3667 case TYPE_CODE_RANGE:
3668 return INCOMPATIBLE_TYPE_BADNESS;
3669 case TYPE_CODE_BOOL:
3670 return EXACT_MATCH_BADNESS;
3672 return INCOMPATIBLE_TYPE_BADNESS;
3676 switch (TYPE_CODE (arg))
3679 if (TYPE_LENGTH (arg) < TYPE_LENGTH (parm))
3680 return FLOAT_PROMOTION_BADNESS;
3681 else if (TYPE_LENGTH (arg) == TYPE_LENGTH (parm))
3682 return EXACT_MATCH_BADNESS;
3684 return FLOAT_CONVERSION_BADNESS;
3686 case TYPE_CODE_BOOL:
3687 case TYPE_CODE_ENUM:
3688 case TYPE_CODE_RANGE:
3689 case TYPE_CODE_CHAR:
3690 return INT_FLOAT_CONVERSION_BADNESS;
3692 return INCOMPATIBLE_TYPE_BADNESS;
3695 case TYPE_CODE_COMPLEX:
3696 switch (TYPE_CODE (arg))
3697 { /* Strictly not needed for C++, but... */
3699 return FLOAT_PROMOTION_BADNESS;
3700 case TYPE_CODE_COMPLEX:
3701 return EXACT_MATCH_BADNESS;
3703 return INCOMPATIBLE_TYPE_BADNESS;
3706 case TYPE_CODE_STRUCT:
3707 switch (TYPE_CODE (arg))
3709 case TYPE_CODE_STRUCT:
3710 /* Check for derivation */
3711 rank.subrank = distance_to_ancestor (parm, arg, 0);
3712 if (rank.subrank >= 0)
3713 return sum_ranks (BASE_CONVERSION_BADNESS, rank);
3714 /* else fall through */
3716 return INCOMPATIBLE_TYPE_BADNESS;
3719 case TYPE_CODE_UNION:
3720 switch (TYPE_CODE (arg))
3722 case TYPE_CODE_UNION:
3724 return INCOMPATIBLE_TYPE_BADNESS;
3727 case TYPE_CODE_MEMBERPTR:
3728 switch (TYPE_CODE (arg))
3731 return INCOMPATIBLE_TYPE_BADNESS;
3734 case TYPE_CODE_METHOD:
3735 switch (TYPE_CODE (arg))
3739 return INCOMPATIBLE_TYPE_BADNESS;
3743 switch (TYPE_CODE (arg))
3747 return INCOMPATIBLE_TYPE_BADNESS;
3752 switch (TYPE_CODE (arg))
3756 return rank_one_type (TYPE_FIELD_TYPE (parm, 0),
3757 TYPE_FIELD_TYPE (arg, 0), NULL);
3759 return INCOMPATIBLE_TYPE_BADNESS;
3762 case TYPE_CODE_VOID:
3764 return INCOMPATIBLE_TYPE_BADNESS;
3765 } /* switch (TYPE_CODE (arg)) */
3768 /* End of functions for overload resolution. */
3770 /* Routines to pretty-print types. */
3773 print_bit_vector (B_TYPE *bits, int nbits)
3777 for (bitno = 0; bitno < nbits; bitno++)
3779 if ((bitno % 8) == 0)
3781 puts_filtered (" ");
3783 if (B_TST (bits, bitno))
3784 printf_filtered (("1"));
3786 printf_filtered (("0"));
3790 /* Note the first arg should be the "this" pointer, we may not want to
3791 include it since we may get into a infinitely recursive
3795 print_args (struct field *args, int nargs, int spaces)
3801 for (i = 0; i < nargs; i++)
3803 printfi_filtered (spaces, "[%d] name '%s'\n", i,
3804 args[i].name != NULL ? args[i].name : "<NULL>");
3805 recursive_dump_type (args[i].type, spaces + 2);
3811 field_is_static (struct field *f)
3813 /* "static" fields are the fields whose location is not relative
3814 to the address of the enclosing struct. It would be nice to
3815 have a dedicated flag that would be set for static fields when
3816 the type is being created. But in practice, checking the field
3817 loc_kind should give us an accurate answer. */
3818 return (FIELD_LOC_KIND (*f) == FIELD_LOC_KIND_PHYSNAME
3819 || FIELD_LOC_KIND (*f) == FIELD_LOC_KIND_PHYSADDR);
3823 dump_fn_fieldlists (struct type *type, int spaces)
3829 printfi_filtered (spaces, "fn_fieldlists ");
3830 gdb_print_host_address (TYPE_FN_FIELDLISTS (type), gdb_stdout);
3831 printf_filtered ("\n");
3832 for (method_idx = 0; method_idx < TYPE_NFN_FIELDS (type); method_idx++)
3834 f = TYPE_FN_FIELDLIST1 (type, method_idx);
3835 printfi_filtered (spaces + 2, "[%d] name '%s' (",
3837 TYPE_FN_FIELDLIST_NAME (type, method_idx));
3838 gdb_print_host_address (TYPE_FN_FIELDLIST_NAME (type, method_idx),
3840 printf_filtered (_(") length %d\n"),
3841 TYPE_FN_FIELDLIST_LENGTH (type, method_idx));
3842 for (overload_idx = 0;
3843 overload_idx < TYPE_FN_FIELDLIST_LENGTH (type, method_idx);
3846 printfi_filtered (spaces + 4, "[%d] physname '%s' (",
3848 TYPE_FN_FIELD_PHYSNAME (f, overload_idx));
3849 gdb_print_host_address (TYPE_FN_FIELD_PHYSNAME (f, overload_idx),
3851 printf_filtered (")\n");
3852 printfi_filtered (spaces + 8, "type ");
3853 gdb_print_host_address (TYPE_FN_FIELD_TYPE (f, overload_idx),
3855 printf_filtered ("\n");
3857 recursive_dump_type (TYPE_FN_FIELD_TYPE (f, overload_idx),
3860 printfi_filtered (spaces + 8, "args ");
3861 gdb_print_host_address (TYPE_FN_FIELD_ARGS (f, overload_idx),
3863 printf_filtered ("\n");
3864 print_args (TYPE_FN_FIELD_ARGS (f, overload_idx),
3865 TYPE_NFIELDS (TYPE_FN_FIELD_TYPE (f, overload_idx)),
3867 printfi_filtered (spaces + 8, "fcontext ");
3868 gdb_print_host_address (TYPE_FN_FIELD_FCONTEXT (f, overload_idx),
3870 printf_filtered ("\n");
3872 printfi_filtered (spaces + 8, "is_const %d\n",
3873 TYPE_FN_FIELD_CONST (f, overload_idx));
3874 printfi_filtered (spaces + 8, "is_volatile %d\n",
3875 TYPE_FN_FIELD_VOLATILE (f, overload_idx));
3876 printfi_filtered (spaces + 8, "is_private %d\n",
3877 TYPE_FN_FIELD_PRIVATE (f, overload_idx));
3878 printfi_filtered (spaces + 8, "is_protected %d\n",
3879 TYPE_FN_FIELD_PROTECTED (f, overload_idx));
3880 printfi_filtered (spaces + 8, "is_stub %d\n",
3881 TYPE_FN_FIELD_STUB (f, overload_idx));
3882 printfi_filtered (spaces + 8, "voffset %u\n",
3883 TYPE_FN_FIELD_VOFFSET (f, overload_idx));
3889 print_cplus_stuff (struct type *type, int spaces)
3891 printfi_filtered (spaces, "vptr_fieldno %d\n", TYPE_VPTR_FIELDNO (type));
3892 printfi_filtered (spaces, "vptr_basetype ");
3893 gdb_print_host_address (TYPE_VPTR_BASETYPE (type), gdb_stdout);
3894 puts_filtered ("\n");
3895 if (TYPE_VPTR_BASETYPE (type) != NULL)
3896 recursive_dump_type (TYPE_VPTR_BASETYPE (type), spaces + 2);
3898 printfi_filtered (spaces, "n_baseclasses %d\n",
3899 TYPE_N_BASECLASSES (type));
3900 printfi_filtered (spaces, "nfn_fields %d\n",
3901 TYPE_NFN_FIELDS (type));
3902 if (TYPE_N_BASECLASSES (type) > 0)
3904 printfi_filtered (spaces, "virtual_field_bits (%d bits at *",
3905 TYPE_N_BASECLASSES (type));
3906 gdb_print_host_address (TYPE_FIELD_VIRTUAL_BITS (type),
3908 printf_filtered (")");
3910 print_bit_vector (TYPE_FIELD_VIRTUAL_BITS (type),
3911 TYPE_N_BASECLASSES (type));
3912 puts_filtered ("\n");
3914 if (TYPE_NFIELDS (type) > 0)
3916 if (TYPE_FIELD_PRIVATE_BITS (type) != NULL)
3918 printfi_filtered (spaces,
3919 "private_field_bits (%d bits at *",
3920 TYPE_NFIELDS (type));
3921 gdb_print_host_address (TYPE_FIELD_PRIVATE_BITS (type),
3923 printf_filtered (")");
3924 print_bit_vector (TYPE_FIELD_PRIVATE_BITS (type),
3925 TYPE_NFIELDS (type));
3926 puts_filtered ("\n");
3928 if (TYPE_FIELD_PROTECTED_BITS (type) != NULL)
3930 printfi_filtered (spaces,
3931 "protected_field_bits (%d bits at *",
3932 TYPE_NFIELDS (type));
3933 gdb_print_host_address (TYPE_FIELD_PROTECTED_BITS (type),
3935 printf_filtered (")");
3936 print_bit_vector (TYPE_FIELD_PROTECTED_BITS (type),
3937 TYPE_NFIELDS (type));
3938 puts_filtered ("\n");
3941 if (TYPE_NFN_FIELDS (type) > 0)
3943 dump_fn_fieldlists (type, spaces);
3947 /* Print the contents of the TYPE's type_specific union, assuming that
3948 its type-specific kind is TYPE_SPECIFIC_GNAT_STUFF. */
3951 print_gnat_stuff (struct type *type, int spaces)
3953 struct type *descriptive_type = TYPE_DESCRIPTIVE_TYPE (type);
3955 if (descriptive_type == NULL)
3956 printfi_filtered (spaces + 2, "no descriptive type\n");
3959 printfi_filtered (spaces + 2, "descriptive type\n");
3960 recursive_dump_type (descriptive_type, spaces + 4);
3964 static struct obstack dont_print_type_obstack;
3967 recursive_dump_type (struct type *type, int spaces)
3972 obstack_begin (&dont_print_type_obstack, 0);
3974 if (TYPE_NFIELDS (type) > 0
3975 || (HAVE_CPLUS_STRUCT (type) && TYPE_NFN_FIELDS (type) > 0))
3977 struct type **first_dont_print
3978 = (struct type **) obstack_base (&dont_print_type_obstack);
3980 int i = (struct type **)
3981 obstack_next_free (&dont_print_type_obstack) - first_dont_print;
3985 if (type == first_dont_print[i])
3987 printfi_filtered (spaces, "type node ");
3988 gdb_print_host_address (type, gdb_stdout);
3989 printf_filtered (_(" <same as already seen type>\n"));
3994 obstack_ptr_grow (&dont_print_type_obstack, type);
3997 printfi_filtered (spaces, "type node ");
3998 gdb_print_host_address (type, gdb_stdout);
3999 printf_filtered ("\n");
4000 printfi_filtered (spaces, "name '%s' (",
4001 TYPE_NAME (type) ? TYPE_NAME (type) : "<NULL>");
4002 gdb_print_host_address (TYPE_NAME (type), gdb_stdout);
4003 printf_filtered (")\n");
4004 printfi_filtered (spaces, "tagname '%s' (",
4005 TYPE_TAG_NAME (type) ? TYPE_TAG_NAME (type) : "<NULL>");
4006 gdb_print_host_address (TYPE_TAG_NAME (type), gdb_stdout);
4007 printf_filtered (")\n");
4008 printfi_filtered (spaces, "code 0x%x ", TYPE_CODE (type));
4009 switch (TYPE_CODE (type))
4011 case TYPE_CODE_UNDEF:
4012 printf_filtered ("(TYPE_CODE_UNDEF)");
4015 printf_filtered ("(TYPE_CODE_PTR)");
4017 case TYPE_CODE_ARRAY:
4018 printf_filtered ("(TYPE_CODE_ARRAY)");
4020 case TYPE_CODE_STRUCT:
4021 printf_filtered ("(TYPE_CODE_STRUCT)");
4023 case TYPE_CODE_UNION:
4024 printf_filtered ("(TYPE_CODE_UNION)");
4026 case TYPE_CODE_ENUM:
4027 printf_filtered ("(TYPE_CODE_ENUM)");
4029 case TYPE_CODE_FLAGS:
4030 printf_filtered ("(TYPE_CODE_FLAGS)");
4032 case TYPE_CODE_FUNC:
4033 printf_filtered ("(TYPE_CODE_FUNC)");
4036 printf_filtered ("(TYPE_CODE_INT)");
4039 printf_filtered ("(TYPE_CODE_FLT)");
4041 case TYPE_CODE_VOID:
4042 printf_filtered ("(TYPE_CODE_VOID)");
4045 printf_filtered ("(TYPE_CODE_SET)");
4047 case TYPE_CODE_RANGE:
4048 printf_filtered ("(TYPE_CODE_RANGE)");
4050 case TYPE_CODE_STRING:
4051 printf_filtered ("(TYPE_CODE_STRING)");
4053 case TYPE_CODE_ERROR:
4054 printf_filtered ("(TYPE_CODE_ERROR)");
4056 case TYPE_CODE_MEMBERPTR:
4057 printf_filtered ("(TYPE_CODE_MEMBERPTR)");
4059 case TYPE_CODE_METHODPTR:
4060 printf_filtered ("(TYPE_CODE_METHODPTR)");
4062 case TYPE_CODE_METHOD:
4063 printf_filtered ("(TYPE_CODE_METHOD)");
4066 printf_filtered ("(TYPE_CODE_REF)");
4068 case TYPE_CODE_CHAR:
4069 printf_filtered ("(TYPE_CODE_CHAR)");
4071 case TYPE_CODE_BOOL:
4072 printf_filtered ("(TYPE_CODE_BOOL)");
4074 case TYPE_CODE_COMPLEX:
4075 printf_filtered ("(TYPE_CODE_COMPLEX)");
4077 case TYPE_CODE_TYPEDEF:
4078 printf_filtered ("(TYPE_CODE_TYPEDEF)");
4080 case TYPE_CODE_NAMESPACE:
4081 printf_filtered ("(TYPE_CODE_NAMESPACE)");
4084 printf_filtered ("(UNKNOWN TYPE CODE)");
4087 puts_filtered ("\n");
4088 printfi_filtered (spaces, "length %d\n", TYPE_LENGTH (type));
4089 if (TYPE_OBJFILE_OWNED (type))
4091 printfi_filtered (spaces, "objfile ");
4092 gdb_print_host_address (TYPE_OWNER (type).objfile, gdb_stdout);
4096 printfi_filtered (spaces, "gdbarch ");
4097 gdb_print_host_address (TYPE_OWNER (type).gdbarch, gdb_stdout);
4099 printf_filtered ("\n");
4100 printfi_filtered (spaces, "target_type ");
4101 gdb_print_host_address (TYPE_TARGET_TYPE (type), gdb_stdout);
4102 printf_filtered ("\n");
4103 if (TYPE_TARGET_TYPE (type) != NULL)
4105 recursive_dump_type (TYPE_TARGET_TYPE (type), spaces + 2);
4107 printfi_filtered (spaces, "pointer_type ");
4108 gdb_print_host_address (TYPE_POINTER_TYPE (type), gdb_stdout);
4109 printf_filtered ("\n");
4110 printfi_filtered (spaces, "reference_type ");
4111 gdb_print_host_address (TYPE_REFERENCE_TYPE (type), gdb_stdout);
4112 printf_filtered ("\n");
4113 printfi_filtered (spaces, "type_chain ");
4114 gdb_print_host_address (TYPE_CHAIN (type), gdb_stdout);
4115 printf_filtered ("\n");
4116 printfi_filtered (spaces, "instance_flags 0x%x",
4117 TYPE_INSTANCE_FLAGS (type));
4118 if (TYPE_CONST (type))
4120 puts_filtered (" TYPE_FLAG_CONST");
4122 if (TYPE_VOLATILE (type))
4124 puts_filtered (" TYPE_FLAG_VOLATILE");
4126 if (TYPE_CODE_SPACE (type))
4128 puts_filtered (" TYPE_FLAG_CODE_SPACE");
4130 if (TYPE_DATA_SPACE (type))
4132 puts_filtered (" TYPE_FLAG_DATA_SPACE");
4134 if (TYPE_ADDRESS_CLASS_1 (type))
4136 puts_filtered (" TYPE_FLAG_ADDRESS_CLASS_1");
4138 if (TYPE_ADDRESS_CLASS_2 (type))
4140 puts_filtered (" TYPE_FLAG_ADDRESS_CLASS_2");
4142 if (TYPE_RESTRICT (type))
4144 puts_filtered (" TYPE_FLAG_RESTRICT");
4146 if (TYPE_ATOMIC (type))
4148 puts_filtered (" TYPE_FLAG_ATOMIC");
4150 puts_filtered ("\n");
4152 printfi_filtered (spaces, "flags");
4153 if (TYPE_UNSIGNED (type))
4155 puts_filtered (" TYPE_FLAG_UNSIGNED");
4157 if (TYPE_NOSIGN (type))
4159 puts_filtered (" TYPE_FLAG_NOSIGN");
4161 if (TYPE_STUB (type))
4163 puts_filtered (" TYPE_FLAG_STUB");
4165 if (TYPE_TARGET_STUB (type))
4167 puts_filtered (" TYPE_FLAG_TARGET_STUB");
4169 if (TYPE_STATIC (type))
4171 puts_filtered (" TYPE_FLAG_STATIC");
4173 if (TYPE_PROTOTYPED (type))
4175 puts_filtered (" TYPE_FLAG_PROTOTYPED");
4177 if (TYPE_INCOMPLETE (type))
4179 puts_filtered (" TYPE_FLAG_INCOMPLETE");
4181 if (TYPE_VARARGS (type))
4183 puts_filtered (" TYPE_FLAG_VARARGS");
4185 /* This is used for things like AltiVec registers on ppc. Gcc emits
4186 an attribute for the array type, which tells whether or not we
4187 have a vector, instead of a regular array. */
4188 if (TYPE_VECTOR (type))
4190 puts_filtered (" TYPE_FLAG_VECTOR");
4192 if (TYPE_FIXED_INSTANCE (type))
4194 puts_filtered (" TYPE_FIXED_INSTANCE");
4196 if (TYPE_STUB_SUPPORTED (type))
4198 puts_filtered (" TYPE_STUB_SUPPORTED");
4200 if (TYPE_NOTTEXT (type))
4202 puts_filtered (" TYPE_NOTTEXT");
4204 puts_filtered ("\n");
4205 printfi_filtered (spaces, "nfields %d ", TYPE_NFIELDS (type));
4206 gdb_print_host_address (TYPE_FIELDS (type), gdb_stdout);
4207 puts_filtered ("\n");
4208 for (idx = 0; idx < TYPE_NFIELDS (type); idx++)
4210 if (TYPE_CODE (type) == TYPE_CODE_ENUM)
4211 printfi_filtered (spaces + 2,
4212 "[%d] enumval %s type ",
4213 idx, plongest (TYPE_FIELD_ENUMVAL (type, idx)));
4215 printfi_filtered (spaces + 2,
4216 "[%d] bitpos %d bitsize %d type ",
4217 idx, TYPE_FIELD_BITPOS (type, idx),
4218 TYPE_FIELD_BITSIZE (type, idx));
4219 gdb_print_host_address (TYPE_FIELD_TYPE (type, idx), gdb_stdout);
4220 printf_filtered (" name '%s' (",
4221 TYPE_FIELD_NAME (type, idx) != NULL
4222 ? TYPE_FIELD_NAME (type, idx)
4224 gdb_print_host_address (TYPE_FIELD_NAME (type, idx), gdb_stdout);
4225 printf_filtered (")\n");
4226 if (TYPE_FIELD_TYPE (type, idx) != NULL)
4228 recursive_dump_type (TYPE_FIELD_TYPE (type, idx), spaces + 4);
4231 if (TYPE_CODE (type) == TYPE_CODE_RANGE)
4233 printfi_filtered (spaces, "low %s%s high %s%s\n",
4234 plongest (TYPE_LOW_BOUND (type)),
4235 TYPE_LOW_BOUND_UNDEFINED (type) ? " (undefined)" : "",
4236 plongest (TYPE_HIGH_BOUND (type)),
4237 TYPE_HIGH_BOUND_UNDEFINED (type)
4238 ? " (undefined)" : "");
4241 switch (TYPE_SPECIFIC_FIELD (type))
4243 case TYPE_SPECIFIC_CPLUS_STUFF:
4244 printfi_filtered (spaces, "cplus_stuff ");
4245 gdb_print_host_address (TYPE_CPLUS_SPECIFIC (type),
4247 puts_filtered ("\n");
4248 print_cplus_stuff (type, spaces);
4251 case TYPE_SPECIFIC_GNAT_STUFF:
4252 printfi_filtered (spaces, "gnat_stuff ");
4253 gdb_print_host_address (TYPE_GNAT_SPECIFIC (type), gdb_stdout);
4254 puts_filtered ("\n");
4255 print_gnat_stuff (type, spaces);
4258 case TYPE_SPECIFIC_FLOATFORMAT:
4259 printfi_filtered (spaces, "floatformat ");
4260 if (TYPE_FLOATFORMAT (type) == NULL)
4261 puts_filtered ("(null)");
4264 puts_filtered ("{ ");
4265 if (TYPE_FLOATFORMAT (type)[0] == NULL
4266 || TYPE_FLOATFORMAT (type)[0]->name == NULL)
4267 puts_filtered ("(null)");
4269 puts_filtered (TYPE_FLOATFORMAT (type)[0]->name);
4271 puts_filtered (", ");
4272 if (TYPE_FLOATFORMAT (type)[1] == NULL
4273 || TYPE_FLOATFORMAT (type)[1]->name == NULL)
4274 puts_filtered ("(null)");
4276 puts_filtered (TYPE_FLOATFORMAT (type)[1]->name);
4278 puts_filtered (" }");
4280 puts_filtered ("\n");
4283 case TYPE_SPECIFIC_FUNC:
4284 printfi_filtered (spaces, "calling_convention %d\n",
4285 TYPE_CALLING_CONVENTION (type));
4286 /* tail_call_list is not printed. */
4289 case TYPE_SPECIFIC_SELF_TYPE:
4290 printfi_filtered (spaces, "self_type ");
4291 gdb_print_host_address (TYPE_SELF_TYPE (type), gdb_stdout);
4292 puts_filtered ("\n");
4297 obstack_free (&dont_print_type_obstack, NULL);
4300 /* Trivial helpers for the libiberty hash table, for mapping one
4305 struct type *old, *newobj;
4309 type_pair_hash (const void *item)
4311 const struct type_pair *pair = item;
4313 return htab_hash_pointer (pair->old);
4317 type_pair_eq (const void *item_lhs, const void *item_rhs)
4319 const struct type_pair *lhs = item_lhs, *rhs = item_rhs;
4321 return lhs->old == rhs->old;
4324 /* Allocate the hash table used by copy_type_recursive to walk
4325 types without duplicates. We use OBJFILE's obstack, because
4326 OBJFILE is about to be deleted. */
4329 create_copied_types_hash (struct objfile *objfile)
4331 return htab_create_alloc_ex (1, type_pair_hash, type_pair_eq,
4332 NULL, &objfile->objfile_obstack,
4333 hashtab_obstack_allocate,
4334 dummy_obstack_deallocate);
4337 /* Recursively copy (deep copy) a dynamic attribute list of a type. */
4339 static struct dynamic_prop_list *
4340 copy_dynamic_prop_list (struct obstack *objfile_obstack,
4341 struct dynamic_prop_list *list)
4343 struct dynamic_prop_list *copy = list;
4344 struct dynamic_prop_list **node_ptr = ©
4346 while (*node_ptr != NULL)
4348 struct dynamic_prop_list *node_copy;
4350 node_copy = ((struct dynamic_prop_list *)
4351 obstack_copy (objfile_obstack, *node_ptr,
4352 sizeof (struct dynamic_prop_list)));
4353 node_copy->prop = (*node_ptr)->prop;
4354 *node_ptr = node_copy;
4356 node_ptr = &node_copy->next;
4362 /* Recursively copy (deep copy) TYPE, if it is associated with
4363 OBJFILE. Return a new type owned by the gdbarch associated with the type, a
4364 saved type if we have already visited TYPE (using COPIED_TYPES), or TYPE if
4365 it is not associated with OBJFILE. */
4368 copy_type_recursive (struct objfile *objfile,
4370 htab_t copied_types)
4372 struct type_pair *stored, pair;
4374 struct type *new_type;
4376 if (! TYPE_OBJFILE_OWNED (type))
4379 /* This type shouldn't be pointing to any types in other objfiles;
4380 if it did, the type might disappear unexpectedly. */
4381 gdb_assert (TYPE_OBJFILE (type) == objfile);
4384 slot = htab_find_slot (copied_types, &pair, INSERT);
4386 return ((struct type_pair *) *slot)->newobj;
4388 new_type = alloc_type_arch (get_type_arch (type));
4390 /* We must add the new type to the hash table immediately, in case
4391 we encounter this type again during a recursive call below. */
4392 stored = XOBNEW (&objfile->objfile_obstack, struct type_pair);
4394 stored->newobj = new_type;
4397 /* Copy the common fields of types. For the main type, we simply
4398 copy the entire thing and then update specific fields as needed. */
4399 *TYPE_MAIN_TYPE (new_type) = *TYPE_MAIN_TYPE (type);
4400 TYPE_OBJFILE_OWNED (new_type) = 0;
4401 TYPE_OWNER (new_type).gdbarch = get_type_arch (type);
4403 if (TYPE_NAME (type))
4404 TYPE_NAME (new_type) = xstrdup (TYPE_NAME (type));
4405 if (TYPE_TAG_NAME (type))
4406 TYPE_TAG_NAME (new_type) = xstrdup (TYPE_TAG_NAME (type));
4408 TYPE_INSTANCE_FLAGS (new_type) = TYPE_INSTANCE_FLAGS (type);
4409 TYPE_LENGTH (new_type) = TYPE_LENGTH (type);
4411 /* Copy the fields. */
4412 if (TYPE_NFIELDS (type))
4416 nfields = TYPE_NFIELDS (type);
4417 TYPE_FIELDS (new_type) = XCNEWVEC (struct field, nfields);
4418 for (i = 0; i < nfields; i++)
4420 TYPE_FIELD_ARTIFICIAL (new_type, i) =
4421 TYPE_FIELD_ARTIFICIAL (type, i);
4422 TYPE_FIELD_BITSIZE (new_type, i) = TYPE_FIELD_BITSIZE (type, i);
4423 if (TYPE_FIELD_TYPE (type, i))
4424 TYPE_FIELD_TYPE (new_type, i)
4425 = copy_type_recursive (objfile, TYPE_FIELD_TYPE (type, i),
4427 if (TYPE_FIELD_NAME (type, i))
4428 TYPE_FIELD_NAME (new_type, i) =
4429 xstrdup (TYPE_FIELD_NAME (type, i));
4430 switch (TYPE_FIELD_LOC_KIND (type, i))
4432 case FIELD_LOC_KIND_BITPOS:
4433 SET_FIELD_BITPOS (TYPE_FIELD (new_type, i),
4434 TYPE_FIELD_BITPOS (type, i));
4436 case FIELD_LOC_KIND_ENUMVAL:
4437 SET_FIELD_ENUMVAL (TYPE_FIELD (new_type, i),
4438 TYPE_FIELD_ENUMVAL (type, i));
4440 case FIELD_LOC_KIND_PHYSADDR:
4441 SET_FIELD_PHYSADDR (TYPE_FIELD (new_type, i),
4442 TYPE_FIELD_STATIC_PHYSADDR (type, i));
4444 case FIELD_LOC_KIND_PHYSNAME:
4445 SET_FIELD_PHYSNAME (TYPE_FIELD (new_type, i),
4446 xstrdup (TYPE_FIELD_STATIC_PHYSNAME (type,
4450 internal_error (__FILE__, __LINE__,
4451 _("Unexpected type field location kind: %d"),
4452 TYPE_FIELD_LOC_KIND (type, i));
4457 /* For range types, copy the bounds information. */
4458 if (TYPE_CODE (type) == TYPE_CODE_RANGE)
4460 TYPE_RANGE_DATA (new_type) = XNEW (struct range_bounds);
4461 *TYPE_RANGE_DATA (new_type) = *TYPE_RANGE_DATA (type);
4464 if (TYPE_DYN_PROP_LIST (type) != NULL)
4465 TYPE_DYN_PROP_LIST (new_type)
4466 = copy_dynamic_prop_list (&objfile->objfile_obstack,
4467 TYPE_DYN_PROP_LIST (type));
4470 /* Copy pointers to other types. */
4471 if (TYPE_TARGET_TYPE (type))
4472 TYPE_TARGET_TYPE (new_type) =
4473 copy_type_recursive (objfile,
4474 TYPE_TARGET_TYPE (type),
4477 /* Maybe copy the type_specific bits.
4479 NOTE drow/2005-12-09: We do not copy the C++-specific bits like
4480 base classes and methods. There's no fundamental reason why we
4481 can't, but at the moment it is not needed. */
4483 switch (TYPE_SPECIFIC_FIELD (type))
4485 case TYPE_SPECIFIC_NONE:
4487 case TYPE_SPECIFIC_FUNC:
4488 INIT_FUNC_SPECIFIC (new_type);
4489 TYPE_CALLING_CONVENTION (new_type) = TYPE_CALLING_CONVENTION (type);
4490 TYPE_NO_RETURN (new_type) = TYPE_NO_RETURN (type);
4491 TYPE_TAIL_CALL_LIST (new_type) = NULL;
4493 case TYPE_SPECIFIC_FLOATFORMAT:
4494 TYPE_FLOATFORMAT (new_type) = TYPE_FLOATFORMAT (type);
4496 case TYPE_SPECIFIC_CPLUS_STUFF:
4497 INIT_CPLUS_SPECIFIC (new_type);
4499 case TYPE_SPECIFIC_GNAT_STUFF:
4500 INIT_GNAT_SPECIFIC (new_type);
4502 case TYPE_SPECIFIC_SELF_TYPE:
4503 set_type_self_type (new_type,
4504 copy_type_recursive (objfile, TYPE_SELF_TYPE (type),
4508 gdb_assert_not_reached ("bad type_specific_kind");
4514 /* Make a copy of the given TYPE, except that the pointer & reference
4515 types are not preserved.
4517 This function assumes that the given type has an associated objfile.
4518 This objfile is used to allocate the new type. */
4521 copy_type (const struct type *type)
4523 struct type *new_type;
4525 gdb_assert (TYPE_OBJFILE_OWNED (type));
4527 new_type = alloc_type_copy (type);
4528 TYPE_INSTANCE_FLAGS (new_type) = TYPE_INSTANCE_FLAGS (type);
4529 TYPE_LENGTH (new_type) = TYPE_LENGTH (type);
4530 memcpy (TYPE_MAIN_TYPE (new_type), TYPE_MAIN_TYPE (type),
4531 sizeof (struct main_type));
4532 if (TYPE_DYN_PROP_LIST (type) != NULL)
4533 TYPE_DYN_PROP_LIST (new_type)
4534 = copy_dynamic_prop_list (&TYPE_OBJFILE (type) -> objfile_obstack,
4535 TYPE_DYN_PROP_LIST (type));
4540 /* Helper functions to initialize architecture-specific types. */
4542 /* Allocate a type structure associated with GDBARCH and set its
4543 CODE, LENGTH, and NAME fields. */
4546 arch_type (struct gdbarch *gdbarch,
4547 enum type_code code, int length, char *name)
4551 type = alloc_type_arch (gdbarch);
4552 TYPE_CODE (type) = code;
4553 TYPE_LENGTH (type) = length;
4556 TYPE_NAME (type) = gdbarch_obstack_strdup (gdbarch, name);
4561 /* Allocate a TYPE_CODE_INT type structure associated with GDBARCH.
4562 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
4563 the type's TYPE_UNSIGNED flag. NAME is the type name. */
4566 arch_integer_type (struct gdbarch *gdbarch,
4567 int bit, int unsigned_p, char *name)
4571 t = arch_type (gdbarch, TYPE_CODE_INT, bit / TARGET_CHAR_BIT, name);
4573 TYPE_UNSIGNED (t) = 1;
4574 if (name && strcmp (name, "char") == 0)
4575 TYPE_NOSIGN (t) = 1;
4580 /* Allocate a TYPE_CODE_CHAR type structure associated with GDBARCH.
4581 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
4582 the type's TYPE_UNSIGNED flag. NAME is the type name. */
4585 arch_character_type (struct gdbarch *gdbarch,
4586 int bit, int unsigned_p, char *name)
4590 t = arch_type (gdbarch, TYPE_CODE_CHAR, bit / TARGET_CHAR_BIT, name);
4592 TYPE_UNSIGNED (t) = 1;
4597 /* Allocate a TYPE_CODE_BOOL type structure associated with GDBARCH.
4598 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
4599 the type's TYPE_UNSIGNED flag. NAME is the type name. */
4602 arch_boolean_type (struct gdbarch *gdbarch,
4603 int bit, int unsigned_p, char *name)
4607 t = arch_type (gdbarch, TYPE_CODE_BOOL, bit / TARGET_CHAR_BIT, name);
4609 TYPE_UNSIGNED (t) = 1;
4614 /* Allocate a TYPE_CODE_FLT type structure associated with GDBARCH.
4615 BIT is the type size in bits; if BIT equals -1, the size is
4616 determined by the floatformat. NAME is the type name. Set the
4617 TYPE_FLOATFORMAT from FLOATFORMATS. */
4620 arch_float_type (struct gdbarch *gdbarch,
4621 int bit, char *name, const struct floatformat **floatformats)
4627 gdb_assert (floatformats != NULL);
4628 gdb_assert (floatformats[0] != NULL && floatformats[1] != NULL);
4629 bit = floatformats[0]->totalsize;
4631 gdb_assert (bit >= 0);
4633 t = arch_type (gdbarch, TYPE_CODE_FLT, bit / TARGET_CHAR_BIT, name);
4634 TYPE_FLOATFORMAT (t) = floatformats;
4638 /* Allocate a TYPE_CODE_COMPLEX type structure associated with GDBARCH.
4639 NAME is the type name. TARGET_TYPE is the component float type. */
4642 arch_complex_type (struct gdbarch *gdbarch,
4643 char *name, struct type *target_type)
4647 t = arch_type (gdbarch, TYPE_CODE_COMPLEX,
4648 2 * TYPE_LENGTH (target_type), name);
4649 TYPE_TARGET_TYPE (t) = target_type;
4653 /* Allocate a TYPE_CODE_FLAGS type structure associated with GDBARCH.
4654 NAME is the type name. LENGTH is the size of the flag word in bytes. */
4657 arch_flags_type (struct gdbarch *gdbarch, char *name, int length)
4659 int nfields = length * TARGET_CHAR_BIT;
4662 type = arch_type (gdbarch, TYPE_CODE_FLAGS, length, name);
4663 TYPE_UNSIGNED (type) = 1;
4664 TYPE_NFIELDS (type) = nfields;
4666 = (struct field *) TYPE_ZALLOC (type, nfields * sizeof (struct field));
4671 /* Add field to TYPE_CODE_FLAGS type TYPE to indicate the bit at
4672 position BITPOS is called NAME. */
4675 append_flags_type_flag (struct type *type, int bitpos, char *name)
4677 gdb_assert (TYPE_CODE (type) == TYPE_CODE_FLAGS);
4678 gdb_assert (bitpos < TYPE_NFIELDS (type));
4679 gdb_assert (bitpos >= 0);
4683 TYPE_FIELD_NAME (type, bitpos) = xstrdup (name);
4684 SET_FIELD_BITPOS (TYPE_FIELD (type, bitpos), bitpos);
4688 /* Don't show this field to the user. */
4689 SET_FIELD_BITPOS (TYPE_FIELD (type, bitpos), -1);
4693 /* Allocate a TYPE_CODE_STRUCT or TYPE_CODE_UNION type structure (as
4694 specified by CODE) associated with GDBARCH. NAME is the type name. */
4697 arch_composite_type (struct gdbarch *gdbarch, char *name, enum type_code code)
4701 gdb_assert (code == TYPE_CODE_STRUCT || code == TYPE_CODE_UNION);
4702 t = arch_type (gdbarch, code, 0, NULL);
4703 TYPE_TAG_NAME (t) = name;
4704 INIT_CPLUS_SPECIFIC (t);
4708 /* Add new field with name NAME and type FIELD to composite type T.
4709 Do not set the field's position or adjust the type's length;
4710 the caller should do so. Return the new field. */
4713 append_composite_type_field_raw (struct type *t, char *name,
4718 TYPE_NFIELDS (t) = TYPE_NFIELDS (t) + 1;
4719 TYPE_FIELDS (t) = XRESIZEVEC (struct field, TYPE_FIELDS (t),
4721 f = &(TYPE_FIELDS (t)[TYPE_NFIELDS (t) - 1]);
4722 memset (f, 0, sizeof f[0]);
4723 FIELD_TYPE (f[0]) = field;
4724 FIELD_NAME (f[0]) = name;
4728 /* Add new field with name NAME and type FIELD to composite type T.
4729 ALIGNMENT (if non-zero) specifies the minimum field alignment. */
4732 append_composite_type_field_aligned (struct type *t, char *name,
4733 struct type *field, int alignment)
4735 struct field *f = append_composite_type_field_raw (t, name, field);
4737 if (TYPE_CODE (t) == TYPE_CODE_UNION)
4739 if (TYPE_LENGTH (t) < TYPE_LENGTH (field))
4740 TYPE_LENGTH (t) = TYPE_LENGTH (field);
4742 else if (TYPE_CODE (t) == TYPE_CODE_STRUCT)
4744 TYPE_LENGTH (t) = TYPE_LENGTH (t) + TYPE_LENGTH (field);
4745 if (TYPE_NFIELDS (t) > 1)
4747 SET_FIELD_BITPOS (f[0],
4748 (FIELD_BITPOS (f[-1])
4749 + (TYPE_LENGTH (FIELD_TYPE (f[-1]))
4750 * TARGET_CHAR_BIT)));
4756 alignment *= TARGET_CHAR_BIT;
4757 left = FIELD_BITPOS (f[0]) % alignment;
4761 SET_FIELD_BITPOS (f[0], FIELD_BITPOS (f[0]) + (alignment - left));
4762 TYPE_LENGTH (t) += (alignment - left) / TARGET_CHAR_BIT;
4769 /* Add new field with name NAME and type FIELD to composite type T. */
4772 append_composite_type_field (struct type *t, char *name,
4775 append_composite_type_field_aligned (t, name, field, 0);
4778 static struct gdbarch_data *gdbtypes_data;
4780 const struct builtin_type *
4781 builtin_type (struct gdbarch *gdbarch)
4783 return gdbarch_data (gdbarch, gdbtypes_data);
4787 gdbtypes_post_init (struct gdbarch *gdbarch)
4789 struct builtin_type *builtin_type
4790 = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct builtin_type);
4793 builtin_type->builtin_void
4794 = arch_type (gdbarch, TYPE_CODE_VOID, 1, "void");
4795 builtin_type->builtin_char
4796 = arch_integer_type (gdbarch, TARGET_CHAR_BIT,
4797 !gdbarch_char_signed (gdbarch), "char");
4798 builtin_type->builtin_signed_char
4799 = arch_integer_type (gdbarch, TARGET_CHAR_BIT,
4801 builtin_type->builtin_unsigned_char
4802 = arch_integer_type (gdbarch, TARGET_CHAR_BIT,
4803 1, "unsigned char");
4804 builtin_type->builtin_short
4805 = arch_integer_type (gdbarch, gdbarch_short_bit (gdbarch),
4807 builtin_type->builtin_unsigned_short
4808 = arch_integer_type (gdbarch, gdbarch_short_bit (gdbarch),
4809 1, "unsigned short");
4810 builtin_type->builtin_int
4811 = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch),
4813 builtin_type->builtin_unsigned_int
4814 = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch),
4816 builtin_type->builtin_long
4817 = arch_integer_type (gdbarch, gdbarch_long_bit (gdbarch),
4819 builtin_type->builtin_unsigned_long
4820 = arch_integer_type (gdbarch, gdbarch_long_bit (gdbarch),
4821 1, "unsigned long");
4822 builtin_type->builtin_long_long
4823 = arch_integer_type (gdbarch, gdbarch_long_long_bit (gdbarch),
4825 builtin_type->builtin_unsigned_long_long
4826 = arch_integer_type (gdbarch, gdbarch_long_long_bit (gdbarch),
4827 1, "unsigned long long");
4828 builtin_type->builtin_float
4829 = arch_float_type (gdbarch, gdbarch_float_bit (gdbarch),
4830 "float", gdbarch_float_format (gdbarch));
4831 builtin_type->builtin_double
4832 = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch),
4833 "double", gdbarch_double_format (gdbarch));
4834 builtin_type->builtin_long_double
4835 = arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch),
4836 "long double", gdbarch_long_double_format (gdbarch));
4837 builtin_type->builtin_complex
4838 = arch_complex_type (gdbarch, "complex",
4839 builtin_type->builtin_float);
4840 builtin_type->builtin_double_complex
4841 = arch_complex_type (gdbarch, "double complex",
4842 builtin_type->builtin_double);
4843 builtin_type->builtin_string
4844 = arch_type (gdbarch, TYPE_CODE_STRING, 1, "string");
4845 builtin_type->builtin_bool
4846 = arch_type (gdbarch, TYPE_CODE_BOOL, 1, "bool");
4848 /* The following three are about decimal floating point types, which
4849 are 32-bits, 64-bits and 128-bits respectively. */
4850 builtin_type->builtin_decfloat
4851 = arch_type (gdbarch, TYPE_CODE_DECFLOAT, 32 / 8, "_Decimal32");
4852 builtin_type->builtin_decdouble
4853 = arch_type (gdbarch, TYPE_CODE_DECFLOAT, 64 / 8, "_Decimal64");
4854 builtin_type->builtin_declong
4855 = arch_type (gdbarch, TYPE_CODE_DECFLOAT, 128 / 8, "_Decimal128");
4857 /* "True" character types. */
4858 builtin_type->builtin_true_char
4859 = arch_character_type (gdbarch, TARGET_CHAR_BIT, 0, "true character");
4860 builtin_type->builtin_true_unsigned_char
4861 = arch_character_type (gdbarch, TARGET_CHAR_BIT, 1, "true character");
4863 /* Fixed-size integer types. */
4864 builtin_type->builtin_int0
4865 = arch_integer_type (gdbarch, 0, 0, "int0_t");
4866 builtin_type->builtin_int8
4867 = arch_integer_type (gdbarch, 8, 0, "int8_t");
4868 builtin_type->builtin_uint8
4869 = arch_integer_type (gdbarch, 8, 1, "uint8_t");
4870 builtin_type->builtin_int16
4871 = arch_integer_type (gdbarch, 16, 0, "int16_t");
4872 builtin_type->builtin_uint16
4873 = arch_integer_type (gdbarch, 16, 1, "uint16_t");
4874 builtin_type->builtin_int32
4875 = arch_integer_type (gdbarch, 32, 0, "int32_t");
4876 builtin_type->builtin_uint32
4877 = arch_integer_type (gdbarch, 32, 1, "uint32_t");
4878 builtin_type->builtin_int64
4879 = arch_integer_type (gdbarch, 64, 0, "int64_t");
4880 builtin_type->builtin_uint64
4881 = arch_integer_type (gdbarch, 64, 1, "uint64_t");
4882 builtin_type->builtin_int128
4883 = arch_integer_type (gdbarch, 128, 0, "int128_t");
4884 builtin_type->builtin_uint128
4885 = arch_integer_type (gdbarch, 128, 1, "uint128_t");
4886 TYPE_INSTANCE_FLAGS (builtin_type->builtin_int8) |=
4887 TYPE_INSTANCE_FLAG_NOTTEXT;
4888 TYPE_INSTANCE_FLAGS (builtin_type->builtin_uint8) |=
4889 TYPE_INSTANCE_FLAG_NOTTEXT;
4891 /* Wide character types. */
4892 builtin_type->builtin_char16
4893 = arch_integer_type (gdbarch, 16, 0, "char16_t");
4894 builtin_type->builtin_char32
4895 = arch_integer_type (gdbarch, 32, 0, "char32_t");
4898 /* Default data/code pointer types. */
4899 builtin_type->builtin_data_ptr
4900 = lookup_pointer_type (builtin_type->builtin_void);
4901 builtin_type->builtin_func_ptr
4902 = lookup_pointer_type (lookup_function_type (builtin_type->builtin_void));
4903 builtin_type->builtin_func_func
4904 = lookup_function_type (builtin_type->builtin_func_ptr);
4906 /* This type represents a GDB internal function. */
4907 builtin_type->internal_fn
4908 = arch_type (gdbarch, TYPE_CODE_INTERNAL_FUNCTION, 0,
4909 "<internal function>");
4911 /* This type represents an xmethod. */
4912 builtin_type->xmethod
4913 = arch_type (gdbarch, TYPE_CODE_XMETHOD, 0, "<xmethod>");
4915 return builtin_type;
4918 /* This set of objfile-based types is intended to be used by symbol
4919 readers as basic types. */
4921 static const struct objfile_data *objfile_type_data;
4923 const struct objfile_type *
4924 objfile_type (struct objfile *objfile)
4926 struct gdbarch *gdbarch;
4927 struct objfile_type *objfile_type
4928 = objfile_data (objfile, objfile_type_data);
4931 return objfile_type;
4933 objfile_type = OBSTACK_CALLOC (&objfile->objfile_obstack,
4934 1, struct objfile_type);
4936 /* Use the objfile architecture to determine basic type properties. */
4937 gdbarch = get_objfile_arch (objfile);
4940 objfile_type->builtin_void
4941 = init_type (TYPE_CODE_VOID, 1,
4945 objfile_type->builtin_char
4946 = init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
4948 | (gdbarch_char_signed (gdbarch) ? 0 : TYPE_FLAG_UNSIGNED)),
4950 objfile_type->builtin_signed_char
4951 = init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
4953 "signed char", objfile);
4954 objfile_type->builtin_unsigned_char
4955 = init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
4957 "unsigned char", objfile);
4958 objfile_type->builtin_short
4959 = init_type (TYPE_CODE_INT,
4960 gdbarch_short_bit (gdbarch) / TARGET_CHAR_BIT,
4961 0, "short", objfile);
4962 objfile_type->builtin_unsigned_short
4963 = init_type (TYPE_CODE_INT,
4964 gdbarch_short_bit (gdbarch) / TARGET_CHAR_BIT,
4965 TYPE_FLAG_UNSIGNED, "unsigned short", objfile);
4966 objfile_type->builtin_int
4967 = init_type (TYPE_CODE_INT,
4968 gdbarch_int_bit (gdbarch) / TARGET_CHAR_BIT,
4970 objfile_type->builtin_unsigned_int
4971 = init_type (TYPE_CODE_INT,
4972 gdbarch_int_bit (gdbarch) / TARGET_CHAR_BIT,
4973 TYPE_FLAG_UNSIGNED, "unsigned int", objfile);
4974 objfile_type->builtin_long
4975 = init_type (TYPE_CODE_INT,
4976 gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT,
4977 0, "long", objfile);
4978 objfile_type->builtin_unsigned_long
4979 = init_type (TYPE_CODE_INT,
4980 gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT,
4981 TYPE_FLAG_UNSIGNED, "unsigned long", objfile);
4982 objfile_type->builtin_long_long
4983 = init_type (TYPE_CODE_INT,
4984 gdbarch_long_long_bit (gdbarch) / TARGET_CHAR_BIT,
4985 0, "long long", objfile);
4986 objfile_type->builtin_unsigned_long_long
4987 = init_type (TYPE_CODE_INT,
4988 gdbarch_long_long_bit (gdbarch) / TARGET_CHAR_BIT,
4989 TYPE_FLAG_UNSIGNED, "unsigned long long", objfile);
4991 objfile_type->builtin_float
4992 = init_type (TYPE_CODE_FLT,
4993 gdbarch_float_bit (gdbarch) / TARGET_CHAR_BIT,
4994 0, "float", objfile);
4995 TYPE_FLOATFORMAT (objfile_type->builtin_float)
4996 = gdbarch_float_format (gdbarch);
4997 objfile_type->builtin_double
4998 = init_type (TYPE_CODE_FLT,
4999 gdbarch_double_bit (gdbarch) / TARGET_CHAR_BIT,
5000 0, "double", objfile);
5001 TYPE_FLOATFORMAT (objfile_type->builtin_double)
5002 = gdbarch_double_format (gdbarch);
5003 objfile_type->builtin_long_double
5004 = init_type (TYPE_CODE_FLT,
5005 gdbarch_long_double_bit (gdbarch) / TARGET_CHAR_BIT,
5006 0, "long double", objfile);
5007 TYPE_FLOATFORMAT (objfile_type->builtin_long_double)
5008 = gdbarch_long_double_format (gdbarch);
5010 /* This type represents a type that was unrecognized in symbol read-in. */
5011 objfile_type->builtin_error
5012 = init_type (TYPE_CODE_ERROR, 0, 0, "<unknown type>", objfile);
5014 /* The following set of types is used for symbols with no
5015 debug information. */
5016 objfile_type->nodebug_text_symbol
5017 = init_type (TYPE_CODE_FUNC, 1, 0,
5018 "<text variable, no debug info>", objfile);
5019 TYPE_TARGET_TYPE (objfile_type->nodebug_text_symbol)
5020 = objfile_type->builtin_int;
5021 objfile_type->nodebug_text_gnu_ifunc_symbol
5022 = init_type (TYPE_CODE_FUNC, 1, TYPE_FLAG_GNU_IFUNC,
5023 "<text gnu-indirect-function variable, no debug info>",
5025 TYPE_TARGET_TYPE (objfile_type->nodebug_text_gnu_ifunc_symbol)
5026 = objfile_type->nodebug_text_symbol;
5027 objfile_type->nodebug_got_plt_symbol
5028 = init_type (TYPE_CODE_PTR, gdbarch_addr_bit (gdbarch) / 8, 0,
5029 "<text from jump slot in .got.plt, no debug info>",
5031 TYPE_TARGET_TYPE (objfile_type->nodebug_got_plt_symbol)
5032 = objfile_type->nodebug_text_symbol;
5033 objfile_type->nodebug_data_symbol
5034 = init_type (TYPE_CODE_INT,
5035 gdbarch_int_bit (gdbarch) / HOST_CHAR_BIT, 0,
5036 "<data variable, no debug info>", objfile);
5037 objfile_type->nodebug_unknown_symbol
5038 = init_type (TYPE_CODE_INT, 1, 0,
5039 "<variable (not text or data), no debug info>", objfile);
5040 objfile_type->nodebug_tls_symbol
5041 = init_type (TYPE_CODE_INT,
5042 gdbarch_int_bit (gdbarch) / HOST_CHAR_BIT, 0,
5043 "<thread local variable, no debug info>", objfile);
5045 /* NOTE: on some targets, addresses and pointers are not necessarily
5049 - gdb's `struct type' always describes the target's
5051 - gdb's `struct value' objects should always hold values in
5053 - gdb's CORE_ADDR values are addresses in the unified virtual
5054 address space that the assembler and linker work with. Thus,
5055 since target_read_memory takes a CORE_ADDR as an argument, it
5056 can access any memory on the target, even if the processor has
5057 separate code and data address spaces.
5059 In this context, objfile_type->builtin_core_addr is a bit odd:
5060 it's a target type for a value the target will never see. It's
5061 only used to hold the values of (typeless) linker symbols, which
5062 are indeed in the unified virtual address space. */
5064 objfile_type->builtin_core_addr
5065 = init_type (TYPE_CODE_INT,
5066 gdbarch_addr_bit (gdbarch) / 8,
5067 TYPE_FLAG_UNSIGNED, "__CORE_ADDR", objfile);
5069 set_objfile_data (objfile, objfile_type_data, objfile_type);
5070 return objfile_type;
5073 extern initialize_file_ftype _initialize_gdbtypes;
5076 _initialize_gdbtypes (void)
5078 gdbtypes_data = gdbarch_data_register_post_init (gdbtypes_post_init);
5079 objfile_type_data = register_objfile_data ();
5081 add_setshow_zuinteger_cmd ("overload", no_class, &overload_debug,
5082 _("Set debugging of C++ overloading."),
5083 _("Show debugging of C++ overloading."),
5084 _("When enabled, ranking of the "
5085 "functions is displayed."),
5087 show_overload_debug,
5088 &setdebuglist, &showdebuglist);
5090 /* Add user knob for controlling resolution of opaque types. */
5091 add_setshow_boolean_cmd ("opaque-type-resolution", class_support,
5092 &opaque_type_resolution,
5093 _("Set resolution of opaque struct/class/union"
5094 " types (if set before loading symbols)."),
5095 _("Show resolution of opaque struct/class/union"
5096 " types (if set before loading symbols)."),
5098 show_opaque_type_resolution,
5099 &setlist, &showlist);
5101 /* Add an option to permit non-strict type checking. */
5102 add_setshow_boolean_cmd ("type", class_support,
5103 &strict_type_checking,
5104 _("Set strict type checking."),
5105 _("Show strict type checking."),
5107 show_strict_type_checking,
5108 &setchecklist, &showchecklist);