1 /* Support routines for manipulating internal types for GDB.
3 Copyright (C) 1992-2015 Free Software Foundation, Inc.
5 Contributed by Cygnus Support, using pieces from other GDB modules.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
28 #include "expression.h"
33 #include "complaints.h"
37 #include "cp-support.h"
39 #include "dwarf2loc.h"
42 /* Initialize BADNESS constants. */
44 const struct rank LENGTH_MISMATCH_BADNESS = {100,0};
46 const struct rank TOO_FEW_PARAMS_BADNESS = {100,0};
47 const struct rank INCOMPATIBLE_TYPE_BADNESS = {100,0};
49 const struct rank EXACT_MATCH_BADNESS = {0,0};
51 const struct rank INTEGER_PROMOTION_BADNESS = {1,0};
52 const struct rank FLOAT_PROMOTION_BADNESS = {1,0};
53 const struct rank BASE_PTR_CONVERSION_BADNESS = {1,0};
54 const struct rank INTEGER_CONVERSION_BADNESS = {2,0};
55 const struct rank FLOAT_CONVERSION_BADNESS = {2,0};
56 const struct rank INT_FLOAT_CONVERSION_BADNESS = {2,0};
57 const struct rank VOID_PTR_CONVERSION_BADNESS = {2,0};
58 const struct rank BOOL_CONVERSION_BADNESS = {3,0};
59 const struct rank BASE_CONVERSION_BADNESS = {2,0};
60 const struct rank REFERENCE_CONVERSION_BADNESS = {2,0};
61 const struct rank NULL_POINTER_CONVERSION_BADNESS = {2,0};
62 const struct rank NS_POINTER_CONVERSION_BADNESS = {10,0};
63 const struct rank NS_INTEGER_POINTER_CONVERSION_BADNESS = {3,0};
65 /* Floatformat pairs. */
66 const struct floatformat *floatformats_ieee_half[BFD_ENDIAN_UNKNOWN] = {
67 &floatformat_ieee_half_big,
68 &floatformat_ieee_half_little
70 const struct floatformat *floatformats_ieee_single[BFD_ENDIAN_UNKNOWN] = {
71 &floatformat_ieee_single_big,
72 &floatformat_ieee_single_little
74 const struct floatformat *floatformats_ieee_double[BFD_ENDIAN_UNKNOWN] = {
75 &floatformat_ieee_double_big,
76 &floatformat_ieee_double_little
78 const struct floatformat *floatformats_ieee_double_littlebyte_bigword[BFD_ENDIAN_UNKNOWN] = {
79 &floatformat_ieee_double_big,
80 &floatformat_ieee_double_littlebyte_bigword
82 const struct floatformat *floatformats_i387_ext[BFD_ENDIAN_UNKNOWN] = {
83 &floatformat_i387_ext,
86 const struct floatformat *floatformats_m68881_ext[BFD_ENDIAN_UNKNOWN] = {
87 &floatformat_m68881_ext,
88 &floatformat_m68881_ext
90 const struct floatformat *floatformats_arm_ext[BFD_ENDIAN_UNKNOWN] = {
91 &floatformat_arm_ext_big,
92 &floatformat_arm_ext_littlebyte_bigword
94 const struct floatformat *floatformats_ia64_spill[BFD_ENDIAN_UNKNOWN] = {
95 &floatformat_ia64_spill_big,
96 &floatformat_ia64_spill_little
98 const struct floatformat *floatformats_ia64_quad[BFD_ENDIAN_UNKNOWN] = {
99 &floatformat_ia64_quad_big,
100 &floatformat_ia64_quad_little
102 const struct floatformat *floatformats_vax_f[BFD_ENDIAN_UNKNOWN] = {
106 const struct floatformat *floatformats_vax_d[BFD_ENDIAN_UNKNOWN] = {
110 const struct floatformat *floatformats_ibm_long_double[BFD_ENDIAN_UNKNOWN] = {
111 &floatformat_ibm_long_double_big,
112 &floatformat_ibm_long_double_little
115 /* Should opaque types be resolved? */
117 static int opaque_type_resolution = 1;
119 /* A flag to enable printing of debugging information of C++
122 unsigned int overload_debug = 0;
124 /* A flag to enable strict type checking. */
126 static int strict_type_checking = 1;
128 /* A function to show whether opaque types are resolved. */
131 show_opaque_type_resolution (struct ui_file *file, int from_tty,
132 struct cmd_list_element *c,
135 fprintf_filtered (file, _("Resolution of opaque struct/class/union types "
136 "(if set before loading symbols) is %s.\n"),
140 /* A function to show whether C++ overload debugging is enabled. */
143 show_overload_debug (struct ui_file *file, int from_tty,
144 struct cmd_list_element *c, const char *value)
146 fprintf_filtered (file, _("Debugging of C++ overloading is %s.\n"),
150 /* A function to show the status of strict type checking. */
153 show_strict_type_checking (struct ui_file *file, int from_tty,
154 struct cmd_list_element *c, const char *value)
156 fprintf_filtered (file, _("Strict type checking is %s.\n"), value);
160 /* Allocate a new OBJFILE-associated type structure and fill it
161 with some defaults. Space for the type structure is allocated
162 on the objfile's objfile_obstack. */
165 alloc_type (struct objfile *objfile)
169 gdb_assert (objfile != NULL);
171 /* Alloc the structure and start off with all fields zeroed. */
172 type = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct type);
173 TYPE_MAIN_TYPE (type) = OBSTACK_ZALLOC (&objfile->objfile_obstack,
175 OBJSTAT (objfile, n_types++);
177 TYPE_OBJFILE_OWNED (type) = 1;
178 TYPE_OWNER (type).objfile = objfile;
180 /* Initialize the fields that might not be zero. */
182 TYPE_CODE (type) = TYPE_CODE_UNDEF;
183 TYPE_CHAIN (type) = type; /* Chain back to itself. */
188 /* Allocate a new GDBARCH-associated type structure and fill it
189 with some defaults. Space for the type structure is allocated
193 alloc_type_arch (struct gdbarch *gdbarch)
197 gdb_assert (gdbarch != NULL);
199 /* Alloc the structure and start off with all fields zeroed. */
201 type = XCNEW (struct type);
202 TYPE_MAIN_TYPE (type) = XCNEW (struct main_type);
204 TYPE_OBJFILE_OWNED (type) = 0;
205 TYPE_OWNER (type).gdbarch = gdbarch;
207 /* Initialize the fields that might not be zero. */
209 TYPE_CODE (type) = TYPE_CODE_UNDEF;
210 TYPE_CHAIN (type) = type; /* Chain back to itself. */
215 /* If TYPE is objfile-associated, allocate a new type structure
216 associated with the same objfile. If TYPE is gdbarch-associated,
217 allocate a new type structure associated with the same gdbarch. */
220 alloc_type_copy (const struct type *type)
222 if (TYPE_OBJFILE_OWNED (type))
223 return alloc_type (TYPE_OWNER (type).objfile);
225 return alloc_type_arch (TYPE_OWNER (type).gdbarch);
228 /* If TYPE is gdbarch-associated, return that architecture.
229 If TYPE is objfile-associated, return that objfile's architecture. */
232 get_type_arch (const struct type *type)
234 if (TYPE_OBJFILE_OWNED (type))
235 return get_objfile_arch (TYPE_OWNER (type).objfile);
237 return TYPE_OWNER (type).gdbarch;
240 /* See gdbtypes.h. */
243 get_target_type (struct type *type)
247 type = TYPE_TARGET_TYPE (type);
249 type = check_typedef (type);
255 /* Alloc a new type instance structure, fill it with some defaults,
256 and point it at OLDTYPE. Allocate the new type instance from the
257 same place as OLDTYPE. */
260 alloc_type_instance (struct type *oldtype)
264 /* Allocate the structure. */
266 if (! TYPE_OBJFILE_OWNED (oldtype))
267 type = XCNEW (struct type);
269 type = OBSTACK_ZALLOC (&TYPE_OBJFILE (oldtype)->objfile_obstack,
272 TYPE_MAIN_TYPE (type) = TYPE_MAIN_TYPE (oldtype);
274 TYPE_CHAIN (type) = type; /* Chain back to itself for now. */
279 /* Clear all remnants of the previous type at TYPE, in preparation for
280 replacing it with something else. Preserve owner information. */
283 smash_type (struct type *type)
285 int objfile_owned = TYPE_OBJFILE_OWNED (type);
286 union type_owner owner = TYPE_OWNER (type);
288 memset (TYPE_MAIN_TYPE (type), 0, sizeof (struct main_type));
290 /* Restore owner information. */
291 TYPE_OBJFILE_OWNED (type) = objfile_owned;
292 TYPE_OWNER (type) = owner;
294 /* For now, delete the rings. */
295 TYPE_CHAIN (type) = type;
297 /* For now, leave the pointer/reference types alone. */
300 /* Lookup a pointer to a type TYPE. TYPEPTR, if nonzero, points
301 to a pointer to memory where the pointer type should be stored.
302 If *TYPEPTR is zero, update it to point to the pointer type we return.
303 We allocate new memory if needed. */
306 make_pointer_type (struct type *type, struct type **typeptr)
308 struct type *ntype; /* New type */
311 ntype = TYPE_POINTER_TYPE (type);
316 return ntype; /* Don't care about alloc,
317 and have new type. */
318 else if (*typeptr == 0)
320 *typeptr = ntype; /* Tracking alloc, and have new type. */
325 if (typeptr == 0 || *typeptr == 0) /* We'll need to allocate one. */
327 ntype = alloc_type_copy (type);
331 else /* We have storage, but need to reset it. */
334 chain = TYPE_CHAIN (ntype);
336 TYPE_CHAIN (ntype) = chain;
339 TYPE_TARGET_TYPE (ntype) = type;
340 TYPE_POINTER_TYPE (type) = ntype;
342 /* FIXME! Assumes the machine has only one representation for pointers! */
345 = gdbarch_ptr_bit (get_type_arch (type)) / TARGET_CHAR_BIT;
346 TYPE_CODE (ntype) = TYPE_CODE_PTR;
348 /* Mark pointers as unsigned. The target converts between pointers
349 and addresses (CORE_ADDRs) using gdbarch_pointer_to_address and
350 gdbarch_address_to_pointer. */
351 TYPE_UNSIGNED (ntype) = 1;
353 /* Update the length of all the other variants of this type. */
354 chain = TYPE_CHAIN (ntype);
355 while (chain != ntype)
357 TYPE_LENGTH (chain) = TYPE_LENGTH (ntype);
358 chain = TYPE_CHAIN (chain);
364 /* Given a type TYPE, return a type of pointers to that type.
365 May need to construct such a type if this is the first use. */
368 lookup_pointer_type (struct type *type)
370 return make_pointer_type (type, (struct type **) 0);
373 /* Lookup a C++ `reference' to a type TYPE. TYPEPTR, if nonzero,
374 points to a pointer to memory where the reference type should be
375 stored. If *TYPEPTR is zero, update it to point to the reference
376 type we return. We allocate new memory if needed. */
379 make_reference_type (struct type *type, struct type **typeptr)
381 struct type *ntype; /* New type */
384 ntype = TYPE_REFERENCE_TYPE (type);
389 return ntype; /* Don't care about alloc,
390 and have new type. */
391 else if (*typeptr == 0)
393 *typeptr = ntype; /* Tracking alloc, and have new type. */
398 if (typeptr == 0 || *typeptr == 0) /* We'll need to allocate one. */
400 ntype = alloc_type_copy (type);
404 else /* We have storage, but need to reset it. */
407 chain = TYPE_CHAIN (ntype);
409 TYPE_CHAIN (ntype) = chain;
412 TYPE_TARGET_TYPE (ntype) = type;
413 TYPE_REFERENCE_TYPE (type) = ntype;
415 /* FIXME! Assume the machine has only one representation for
416 references, and that it matches the (only) representation for
419 TYPE_LENGTH (ntype) =
420 gdbarch_ptr_bit (get_type_arch (type)) / TARGET_CHAR_BIT;
421 TYPE_CODE (ntype) = TYPE_CODE_REF;
423 if (!TYPE_REFERENCE_TYPE (type)) /* Remember it, if don't have one. */
424 TYPE_REFERENCE_TYPE (type) = ntype;
426 /* Update the length of all the other variants of this type. */
427 chain = TYPE_CHAIN (ntype);
428 while (chain != ntype)
430 TYPE_LENGTH (chain) = TYPE_LENGTH (ntype);
431 chain = TYPE_CHAIN (chain);
437 /* Same as above, but caller doesn't care about memory allocation
441 lookup_reference_type (struct type *type)
443 return make_reference_type (type, (struct type **) 0);
446 /* Lookup a function type that returns type TYPE. TYPEPTR, if
447 nonzero, points to a pointer to memory where the function type
448 should be stored. If *TYPEPTR is zero, update it to point to the
449 function type we return. We allocate new memory if needed. */
452 make_function_type (struct type *type, struct type **typeptr)
454 struct type *ntype; /* New type */
456 if (typeptr == 0 || *typeptr == 0) /* We'll need to allocate one. */
458 ntype = alloc_type_copy (type);
462 else /* We have storage, but need to reset it. */
468 TYPE_TARGET_TYPE (ntype) = type;
470 TYPE_LENGTH (ntype) = 1;
471 TYPE_CODE (ntype) = TYPE_CODE_FUNC;
473 INIT_FUNC_SPECIFIC (ntype);
478 /* Given a type TYPE, return a type of functions that return that type.
479 May need to construct such a type if this is the first use. */
482 lookup_function_type (struct type *type)
484 return make_function_type (type, (struct type **) 0);
487 /* Given a type TYPE and argument types, return the appropriate
488 function type. If the final type in PARAM_TYPES is NULL, make a
492 lookup_function_type_with_arguments (struct type *type,
494 struct type **param_types)
496 struct type *fn = make_function_type (type, (struct type **) 0);
501 if (param_types[nparams - 1] == NULL)
504 TYPE_VARARGS (fn) = 1;
506 else if (TYPE_CODE (check_typedef (param_types[nparams - 1]))
510 /* Caller should have ensured this. */
511 gdb_assert (nparams == 0);
512 TYPE_PROTOTYPED (fn) = 1;
516 TYPE_NFIELDS (fn) = nparams;
517 TYPE_FIELDS (fn) = TYPE_ZALLOC (fn, nparams * sizeof (struct field));
518 for (i = 0; i < nparams; ++i)
519 TYPE_FIELD_TYPE (fn, i) = param_types[i];
524 /* Identify address space identifier by name --
525 return the integer flag defined in gdbtypes.h. */
528 address_space_name_to_int (struct gdbarch *gdbarch, char *space_identifier)
532 /* Check for known address space delimiters. */
533 if (!strcmp (space_identifier, "code"))
534 return TYPE_INSTANCE_FLAG_CODE_SPACE;
535 else if (!strcmp (space_identifier, "data"))
536 return TYPE_INSTANCE_FLAG_DATA_SPACE;
537 else if (gdbarch_address_class_name_to_type_flags_p (gdbarch)
538 && gdbarch_address_class_name_to_type_flags (gdbarch,
543 error (_("Unknown address space specifier: \"%s\""), space_identifier);
546 /* Identify address space identifier by integer flag as defined in
547 gdbtypes.h -- return the string version of the adress space name. */
550 address_space_int_to_name (struct gdbarch *gdbarch, int space_flag)
552 if (space_flag & TYPE_INSTANCE_FLAG_CODE_SPACE)
554 else if (space_flag & TYPE_INSTANCE_FLAG_DATA_SPACE)
556 else if ((space_flag & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL)
557 && gdbarch_address_class_type_flags_to_name_p (gdbarch))
558 return gdbarch_address_class_type_flags_to_name (gdbarch, space_flag);
563 /* Create a new type with instance flags NEW_FLAGS, based on TYPE.
565 If STORAGE is non-NULL, create the new type instance there.
566 STORAGE must be in the same obstack as TYPE. */
569 make_qualified_type (struct type *type, int new_flags,
570 struct type *storage)
577 if (TYPE_INSTANCE_FLAGS (ntype) == new_flags)
579 ntype = TYPE_CHAIN (ntype);
581 while (ntype != type);
583 /* Create a new type instance. */
585 ntype = alloc_type_instance (type);
588 /* If STORAGE was provided, it had better be in the same objfile
589 as TYPE. Otherwise, we can't link it into TYPE's cv chain:
590 if one objfile is freed and the other kept, we'd have
591 dangling pointers. */
592 gdb_assert (TYPE_OBJFILE (type) == TYPE_OBJFILE (storage));
595 TYPE_MAIN_TYPE (ntype) = TYPE_MAIN_TYPE (type);
596 TYPE_CHAIN (ntype) = ntype;
599 /* Pointers or references to the original type are not relevant to
601 TYPE_POINTER_TYPE (ntype) = (struct type *) 0;
602 TYPE_REFERENCE_TYPE (ntype) = (struct type *) 0;
604 /* Chain the new qualified type to the old type. */
605 TYPE_CHAIN (ntype) = TYPE_CHAIN (type);
606 TYPE_CHAIN (type) = ntype;
608 /* Now set the instance flags and return the new type. */
609 TYPE_INSTANCE_FLAGS (ntype) = new_flags;
611 /* Set length of new type to that of the original type. */
612 TYPE_LENGTH (ntype) = TYPE_LENGTH (type);
617 /* Make an address-space-delimited variant of a type -- a type that
618 is identical to the one supplied except that it has an address
619 space attribute attached to it (such as "code" or "data").
621 The space attributes "code" and "data" are for Harvard
622 architectures. The address space attributes are for architectures
623 which have alternately sized pointers or pointers with alternate
627 make_type_with_address_space (struct type *type, int space_flag)
629 int new_flags = ((TYPE_INSTANCE_FLAGS (type)
630 & ~(TYPE_INSTANCE_FLAG_CODE_SPACE
631 | TYPE_INSTANCE_FLAG_DATA_SPACE
632 | TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL))
635 return make_qualified_type (type, new_flags, NULL);
638 /* Make a "c-v" variant of a type -- a type that is identical to the
639 one supplied except that it may have const or volatile attributes
640 CNST is a flag for setting the const attribute
641 VOLTL is a flag for setting the volatile attribute
642 TYPE is the base type whose variant we are creating.
644 If TYPEPTR and *TYPEPTR are non-zero, then *TYPEPTR points to
645 storage to hold the new qualified type; *TYPEPTR and TYPE must be
646 in the same objfile. Otherwise, allocate fresh memory for the new
647 type whereever TYPE lives. If TYPEPTR is non-zero, set it to the
648 new type we construct. */
651 make_cv_type (int cnst, int voltl,
653 struct type **typeptr)
655 struct type *ntype; /* New type */
657 int new_flags = (TYPE_INSTANCE_FLAGS (type)
658 & ~(TYPE_INSTANCE_FLAG_CONST
659 | TYPE_INSTANCE_FLAG_VOLATILE));
662 new_flags |= TYPE_INSTANCE_FLAG_CONST;
665 new_flags |= TYPE_INSTANCE_FLAG_VOLATILE;
667 if (typeptr && *typeptr != NULL)
669 /* TYPE and *TYPEPTR must be in the same objfile. We can't have
670 a C-V variant chain that threads across objfiles: if one
671 objfile gets freed, then the other has a broken C-V chain.
673 This code used to try to copy over the main type from TYPE to
674 *TYPEPTR if they were in different objfiles, but that's
675 wrong, too: TYPE may have a field list or member function
676 lists, which refer to types of their own, etc. etc. The
677 whole shebang would need to be copied over recursively; you
678 can't have inter-objfile pointers. The only thing to do is
679 to leave stub types as stub types, and look them up afresh by
680 name each time you encounter them. */
681 gdb_assert (TYPE_OBJFILE (*typeptr) == TYPE_OBJFILE (type));
684 ntype = make_qualified_type (type, new_flags,
685 typeptr ? *typeptr : NULL);
693 /* Make a 'restrict'-qualified version of TYPE. */
696 make_restrict_type (struct type *type)
698 return make_qualified_type (type,
699 (TYPE_INSTANCE_FLAGS (type)
700 | TYPE_INSTANCE_FLAG_RESTRICT),
704 /* Make a type without const, volatile, or restrict. */
707 make_unqualified_type (struct type *type)
709 return make_qualified_type (type,
710 (TYPE_INSTANCE_FLAGS (type)
711 & ~(TYPE_INSTANCE_FLAG_CONST
712 | TYPE_INSTANCE_FLAG_VOLATILE
713 | TYPE_INSTANCE_FLAG_RESTRICT)),
717 /* Make a '_Atomic'-qualified version of TYPE. */
720 make_atomic_type (struct type *type)
722 return make_qualified_type (type,
723 (TYPE_INSTANCE_FLAGS (type)
724 | TYPE_INSTANCE_FLAG_ATOMIC),
728 /* Replace the contents of ntype with the type *type. This changes the
729 contents, rather than the pointer for TYPE_MAIN_TYPE (ntype); thus
730 the changes are propogated to all types in the TYPE_CHAIN.
732 In order to build recursive types, it's inevitable that we'll need
733 to update types in place --- but this sort of indiscriminate
734 smashing is ugly, and needs to be replaced with something more
735 controlled. TYPE_MAIN_TYPE is a step in this direction; it's not
736 clear if more steps are needed. */
739 replace_type (struct type *ntype, struct type *type)
743 /* These two types had better be in the same objfile. Otherwise,
744 the assignment of one type's main type structure to the other
745 will produce a type with references to objects (names; field
746 lists; etc.) allocated on an objfile other than its own. */
747 gdb_assert (TYPE_OBJFILE (ntype) == TYPE_OBJFILE (ntype));
749 *TYPE_MAIN_TYPE (ntype) = *TYPE_MAIN_TYPE (type);
751 /* The type length is not a part of the main type. Update it for
752 each type on the variant chain. */
756 /* Assert that this element of the chain has no address-class bits
757 set in its flags. Such type variants might have type lengths
758 which are supposed to be different from the non-address-class
759 variants. This assertion shouldn't ever be triggered because
760 symbol readers which do construct address-class variants don't
761 call replace_type(). */
762 gdb_assert (TYPE_ADDRESS_CLASS_ALL (chain) == 0);
764 TYPE_LENGTH (chain) = TYPE_LENGTH (type);
765 chain = TYPE_CHAIN (chain);
767 while (ntype != chain);
769 /* Assert that the two types have equivalent instance qualifiers.
770 This should be true for at least all of our debug readers. */
771 gdb_assert (TYPE_INSTANCE_FLAGS (ntype) == TYPE_INSTANCE_FLAGS (type));
774 /* Implement direct support for MEMBER_TYPE in GNU C++.
775 May need to construct such a type if this is the first use.
776 The TYPE is the type of the member. The DOMAIN is the type
777 of the aggregate that the member belongs to. */
780 lookup_memberptr_type (struct type *type, struct type *domain)
784 mtype = alloc_type_copy (type);
785 smash_to_memberptr_type (mtype, domain, type);
789 /* Return a pointer-to-method type, for a method of type TO_TYPE. */
792 lookup_methodptr_type (struct type *to_type)
796 mtype = alloc_type_copy (to_type);
797 smash_to_methodptr_type (mtype, to_type);
801 /* Allocate a stub method whose return type is TYPE. This apparently
802 happens for speed of symbol reading, since parsing out the
803 arguments to the method is cpu-intensive, the way we are doing it.
804 So, we will fill in arguments later. This always returns a fresh
808 allocate_stub_method (struct type *type)
812 mtype = alloc_type_copy (type);
813 TYPE_CODE (mtype) = TYPE_CODE_METHOD;
814 TYPE_LENGTH (mtype) = 1;
815 TYPE_STUB (mtype) = 1;
816 TYPE_TARGET_TYPE (mtype) = type;
817 /* TYPE_SELF_TYPE (mtype) = unknown yet */
821 /* Create a range type with a dynamic range from LOW_BOUND to
822 HIGH_BOUND, inclusive. See create_range_type for further details. */
825 create_range_type (struct type *result_type, struct type *index_type,
826 const struct dynamic_prop *low_bound,
827 const struct dynamic_prop *high_bound)
829 if (result_type == NULL)
830 result_type = alloc_type_copy (index_type);
831 TYPE_CODE (result_type) = TYPE_CODE_RANGE;
832 TYPE_TARGET_TYPE (result_type) = index_type;
833 if (TYPE_STUB (index_type))
834 TYPE_TARGET_STUB (result_type) = 1;
836 TYPE_LENGTH (result_type) = TYPE_LENGTH (check_typedef (index_type));
838 TYPE_RANGE_DATA (result_type) = (struct range_bounds *)
839 TYPE_ZALLOC (result_type, sizeof (struct range_bounds));
840 TYPE_RANGE_DATA (result_type)->low = *low_bound;
841 TYPE_RANGE_DATA (result_type)->high = *high_bound;
843 if (low_bound->kind == PROP_CONST && low_bound->data.const_val >= 0)
844 TYPE_UNSIGNED (result_type) = 1;
846 /* Ada allows the declaration of range types whose upper bound is
847 less than the lower bound, so checking the lower bound is not
848 enough. Make sure we do not mark a range type whose upper bound
849 is negative as unsigned. */
850 if (high_bound->kind == PROP_CONST && high_bound->data.const_val < 0)
851 TYPE_UNSIGNED (result_type) = 0;
856 /* Create a range type using either a blank type supplied in
857 RESULT_TYPE, or creating a new type, inheriting the objfile from
860 Indices will be of type INDEX_TYPE, and will range from LOW_BOUND
861 to HIGH_BOUND, inclusive.
863 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
864 sure it is TYPE_CODE_UNDEF before we bash it into a range type? */
867 create_static_range_type (struct type *result_type, struct type *index_type,
868 LONGEST low_bound, LONGEST high_bound)
870 struct dynamic_prop low, high;
872 low.kind = PROP_CONST;
873 low.data.const_val = low_bound;
875 high.kind = PROP_CONST;
876 high.data.const_val = high_bound;
878 result_type = create_range_type (result_type, index_type, &low, &high);
883 /* Predicate tests whether BOUNDS are static. Returns 1 if all bounds values
884 are static, otherwise returns 0. */
887 has_static_range (const struct range_bounds *bounds)
889 return (bounds->low.kind == PROP_CONST
890 && bounds->high.kind == PROP_CONST);
894 /* Set *LOWP and *HIGHP to the lower and upper bounds of discrete type
895 TYPE. Return 1 if type is a range type, 0 if it is discrete (and
896 bounds will fit in LONGEST), or -1 otherwise. */
899 get_discrete_bounds (struct type *type, LONGEST *lowp, LONGEST *highp)
901 CHECK_TYPEDEF (type);
902 switch (TYPE_CODE (type))
904 case TYPE_CODE_RANGE:
905 *lowp = TYPE_LOW_BOUND (type);
906 *highp = TYPE_HIGH_BOUND (type);
909 if (TYPE_NFIELDS (type) > 0)
911 /* The enums may not be sorted by value, so search all
915 *lowp = *highp = TYPE_FIELD_ENUMVAL (type, 0);
916 for (i = 0; i < TYPE_NFIELDS (type); i++)
918 if (TYPE_FIELD_ENUMVAL (type, i) < *lowp)
919 *lowp = TYPE_FIELD_ENUMVAL (type, i);
920 if (TYPE_FIELD_ENUMVAL (type, i) > *highp)
921 *highp = TYPE_FIELD_ENUMVAL (type, i);
924 /* Set unsigned indicator if warranted. */
927 TYPE_UNSIGNED (type) = 1;
941 if (TYPE_LENGTH (type) > sizeof (LONGEST)) /* Too big */
943 if (!TYPE_UNSIGNED (type))
945 *lowp = -(1 << (TYPE_LENGTH (type) * TARGET_CHAR_BIT - 1));
949 /* ... fall through for unsigned ints ... */
952 /* This round-about calculation is to avoid shifting by
953 TYPE_LENGTH (type) * TARGET_CHAR_BIT, which will not work
954 if TYPE_LENGTH (type) == sizeof (LONGEST). */
955 *highp = 1 << (TYPE_LENGTH (type) * TARGET_CHAR_BIT - 1);
956 *highp = (*highp - 1) | *highp;
963 /* Assuming TYPE is a simple, non-empty array type, compute its upper
964 and lower bound. Save the low bound into LOW_BOUND if not NULL.
965 Save the high bound into HIGH_BOUND if not NULL.
967 Return 1 if the operation was successful. Return zero otherwise,
968 in which case the values of LOW_BOUND and HIGH_BOUNDS are unmodified.
970 We now simply use get_discrete_bounds call to get the values
971 of the low and high bounds.
972 get_discrete_bounds can return three values:
973 1, meaning that index is a range,
974 0, meaning that index is a discrete type,
975 or -1 for failure. */
978 get_array_bounds (struct type *type, LONGEST *low_bound, LONGEST *high_bound)
980 struct type *index = TYPE_INDEX_TYPE (type);
988 res = get_discrete_bounds (index, &low, &high);
992 /* Check if the array bounds are undefined. */
994 && ((low_bound && TYPE_ARRAY_LOWER_BOUND_IS_UNDEFINED (type))
995 || (high_bound && TYPE_ARRAY_UPPER_BOUND_IS_UNDEFINED (type))))
1007 /* Create an array type using either a blank type supplied in
1008 RESULT_TYPE, or creating a new type, inheriting the objfile from
1011 Elements will be of type ELEMENT_TYPE, the indices will be of type
1014 If BIT_STRIDE is not zero, build a packed array type whose element
1015 size is BIT_STRIDE. Otherwise, ignore this parameter.
1017 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
1018 sure it is TYPE_CODE_UNDEF before we bash it into an array
1022 create_array_type_with_stride (struct type *result_type,
1023 struct type *element_type,
1024 struct type *range_type,
1025 unsigned int bit_stride)
1027 if (result_type == NULL)
1028 result_type = alloc_type_copy (range_type);
1030 TYPE_CODE (result_type) = TYPE_CODE_ARRAY;
1031 TYPE_TARGET_TYPE (result_type) = element_type;
1032 if (has_static_range (TYPE_RANGE_DATA (range_type)))
1034 LONGEST low_bound, high_bound;
1036 if (get_discrete_bounds (range_type, &low_bound, &high_bound) < 0)
1037 low_bound = high_bound = 0;
1038 CHECK_TYPEDEF (element_type);
1039 /* Be careful when setting the array length. Ada arrays can be
1040 empty arrays with the high_bound being smaller than the low_bound.
1041 In such cases, the array length should be zero. */
1042 if (high_bound < low_bound)
1043 TYPE_LENGTH (result_type) = 0;
1044 else if (bit_stride > 0)
1045 TYPE_LENGTH (result_type) =
1046 (bit_stride * (high_bound - low_bound + 1) + 7) / 8;
1048 TYPE_LENGTH (result_type) =
1049 TYPE_LENGTH (element_type) * (high_bound - low_bound + 1);
1053 /* This type is dynamic and its length needs to be computed
1054 on demand. In the meantime, avoid leaving the TYPE_LENGTH
1055 undefined by setting it to zero. Although we are not expected
1056 to trust TYPE_LENGTH in this case, setting the size to zero
1057 allows us to avoid allocating objects of random sizes in case
1058 we accidently do. */
1059 TYPE_LENGTH (result_type) = 0;
1062 TYPE_NFIELDS (result_type) = 1;
1063 TYPE_FIELDS (result_type) =
1064 (struct field *) TYPE_ZALLOC (result_type, sizeof (struct field));
1065 TYPE_INDEX_TYPE (result_type) = range_type;
1067 TYPE_FIELD_BITSIZE (result_type, 0) = bit_stride;
1069 /* TYPE_FLAG_TARGET_STUB will take care of zero length arrays. */
1070 if (TYPE_LENGTH (result_type) == 0)
1071 TYPE_TARGET_STUB (result_type) = 1;
1076 /* Same as create_array_type_with_stride but with no bit_stride
1077 (BIT_STRIDE = 0), thus building an unpacked array. */
1080 create_array_type (struct type *result_type,
1081 struct type *element_type,
1082 struct type *range_type)
1084 return create_array_type_with_stride (result_type, element_type,
1089 lookup_array_range_type (struct type *element_type,
1090 LONGEST low_bound, LONGEST high_bound)
1092 struct gdbarch *gdbarch = get_type_arch (element_type);
1093 struct type *index_type = builtin_type (gdbarch)->builtin_int;
1094 struct type *range_type
1095 = create_static_range_type (NULL, index_type, low_bound, high_bound);
1097 return create_array_type (NULL, element_type, range_type);
1100 /* Create a string type using either a blank type supplied in
1101 RESULT_TYPE, or creating a new type. String types are similar
1102 enough to array of char types that we can use create_array_type to
1103 build the basic type and then bash it into a string type.
1105 For fixed length strings, the range type contains 0 as the lower
1106 bound and the length of the string minus one as the upper bound.
1108 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
1109 sure it is TYPE_CODE_UNDEF before we bash it into a string
1113 create_string_type (struct type *result_type,
1114 struct type *string_char_type,
1115 struct type *range_type)
1117 result_type = create_array_type (result_type,
1120 TYPE_CODE (result_type) = TYPE_CODE_STRING;
1125 lookup_string_range_type (struct type *string_char_type,
1126 LONGEST low_bound, LONGEST high_bound)
1128 struct type *result_type;
1130 result_type = lookup_array_range_type (string_char_type,
1131 low_bound, high_bound);
1132 TYPE_CODE (result_type) = TYPE_CODE_STRING;
1137 create_set_type (struct type *result_type, struct type *domain_type)
1139 if (result_type == NULL)
1140 result_type = alloc_type_copy (domain_type);
1142 TYPE_CODE (result_type) = TYPE_CODE_SET;
1143 TYPE_NFIELDS (result_type) = 1;
1144 TYPE_FIELDS (result_type) = TYPE_ZALLOC (result_type, sizeof (struct field));
1146 if (!TYPE_STUB (domain_type))
1148 LONGEST low_bound, high_bound, bit_length;
1150 if (get_discrete_bounds (domain_type, &low_bound, &high_bound) < 0)
1151 low_bound = high_bound = 0;
1152 bit_length = high_bound - low_bound + 1;
1153 TYPE_LENGTH (result_type)
1154 = (bit_length + TARGET_CHAR_BIT - 1) / TARGET_CHAR_BIT;
1156 TYPE_UNSIGNED (result_type) = 1;
1158 TYPE_FIELD_TYPE (result_type, 0) = domain_type;
1163 /* Convert ARRAY_TYPE to a vector type. This may modify ARRAY_TYPE
1164 and any array types nested inside it. */
1167 make_vector_type (struct type *array_type)
1169 struct type *inner_array, *elt_type;
1172 /* Find the innermost array type, in case the array is
1173 multi-dimensional. */
1174 inner_array = array_type;
1175 while (TYPE_CODE (TYPE_TARGET_TYPE (inner_array)) == TYPE_CODE_ARRAY)
1176 inner_array = TYPE_TARGET_TYPE (inner_array);
1178 elt_type = TYPE_TARGET_TYPE (inner_array);
1179 if (TYPE_CODE (elt_type) == TYPE_CODE_INT)
1181 flags = TYPE_INSTANCE_FLAGS (elt_type) | TYPE_INSTANCE_FLAG_NOTTEXT;
1182 elt_type = make_qualified_type (elt_type, flags, NULL);
1183 TYPE_TARGET_TYPE (inner_array) = elt_type;
1186 TYPE_VECTOR (array_type) = 1;
1190 init_vector_type (struct type *elt_type, int n)
1192 struct type *array_type;
1194 array_type = lookup_array_range_type (elt_type, 0, n - 1);
1195 make_vector_type (array_type);
1199 /* Internal routine called by TYPE_SELF_TYPE to return the type that TYPE
1200 belongs to. In c++ this is the class of "this", but TYPE_THIS_TYPE is too
1201 confusing. "self" is a common enough replacement for "this".
1202 TYPE must be one of TYPE_CODE_METHODPTR, TYPE_CODE_MEMBERPTR, or
1203 TYPE_CODE_METHOD. */
1206 internal_type_self_type (struct type *type)
1208 switch (TYPE_CODE (type))
1210 case TYPE_CODE_METHODPTR:
1211 case TYPE_CODE_MEMBERPTR:
1212 if (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_NONE)
1214 gdb_assert (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_SELF_TYPE);
1215 return TYPE_MAIN_TYPE (type)->type_specific.self_type;
1216 case TYPE_CODE_METHOD:
1217 if (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_NONE)
1219 gdb_assert (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_FUNC);
1220 return TYPE_MAIN_TYPE (type)->type_specific.func_stuff->self_type;
1222 gdb_assert_not_reached ("bad type");
1226 /* Set the type of the class that TYPE belongs to.
1227 In c++ this is the class of "this".
1228 TYPE must be one of TYPE_CODE_METHODPTR, TYPE_CODE_MEMBERPTR, or
1229 TYPE_CODE_METHOD. */
1232 set_type_self_type (struct type *type, struct type *self_type)
1234 switch (TYPE_CODE (type))
1236 case TYPE_CODE_METHODPTR:
1237 case TYPE_CODE_MEMBERPTR:
1238 if (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_NONE)
1239 TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_SELF_TYPE;
1240 gdb_assert (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_SELF_TYPE);
1241 TYPE_MAIN_TYPE (type)->type_specific.self_type = self_type;
1243 case TYPE_CODE_METHOD:
1244 if (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_NONE)
1245 INIT_FUNC_SPECIFIC (type);
1246 gdb_assert (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_FUNC);
1247 TYPE_MAIN_TYPE (type)->type_specific.func_stuff->self_type = self_type;
1250 gdb_assert_not_reached ("bad type");
1254 /* Smash TYPE to be a type of pointers to members of SELF_TYPE with type
1255 TO_TYPE. A member pointer is a wierd thing -- it amounts to a
1256 typed offset into a struct, e.g. "an int at offset 8". A MEMBER
1257 TYPE doesn't include the offset (that's the value of the MEMBER
1258 itself), but does include the structure type into which it points
1261 When "smashing" the type, we preserve the objfile that the old type
1262 pointed to, since we aren't changing where the type is actually
1266 smash_to_memberptr_type (struct type *type, struct type *self_type,
1267 struct type *to_type)
1270 TYPE_CODE (type) = TYPE_CODE_MEMBERPTR;
1271 TYPE_TARGET_TYPE (type) = to_type;
1272 set_type_self_type (type, self_type);
1273 /* Assume that a data member pointer is the same size as a normal
1276 = gdbarch_ptr_bit (get_type_arch (to_type)) / TARGET_CHAR_BIT;
1279 /* Smash TYPE to be a type of pointer to methods type TO_TYPE.
1281 When "smashing" the type, we preserve the objfile that the old type
1282 pointed to, since we aren't changing where the type is actually
1286 smash_to_methodptr_type (struct type *type, struct type *to_type)
1289 TYPE_CODE (type) = TYPE_CODE_METHODPTR;
1290 TYPE_TARGET_TYPE (type) = to_type;
1291 set_type_self_type (type, TYPE_SELF_TYPE (to_type));
1292 TYPE_LENGTH (type) = cplus_method_ptr_size (to_type);
1295 /* Smash TYPE to be a type of method of SELF_TYPE with type TO_TYPE.
1296 METHOD just means `function that gets an extra "this" argument'.
1298 When "smashing" the type, we preserve the objfile that the old type
1299 pointed to, since we aren't changing where the type is actually
1303 smash_to_method_type (struct type *type, struct type *self_type,
1304 struct type *to_type, struct field *args,
1305 int nargs, int varargs)
1308 TYPE_CODE (type) = TYPE_CODE_METHOD;
1309 TYPE_TARGET_TYPE (type) = to_type;
1310 set_type_self_type (type, self_type);
1311 TYPE_FIELDS (type) = args;
1312 TYPE_NFIELDS (type) = nargs;
1314 TYPE_VARARGS (type) = 1;
1315 TYPE_LENGTH (type) = 1; /* In practice, this is never needed. */
1318 /* Return a typename for a struct/union/enum type without "struct ",
1319 "union ", or "enum ". If the type has a NULL name, return NULL. */
1322 type_name_no_tag (const struct type *type)
1324 if (TYPE_TAG_NAME (type) != NULL)
1325 return TYPE_TAG_NAME (type);
1327 /* Is there code which expects this to return the name if there is
1328 no tag name? My guess is that this is mainly used for C++ in
1329 cases where the two will always be the same. */
1330 return TYPE_NAME (type);
1333 /* A wrapper of type_name_no_tag which calls error if the type is anonymous.
1334 Since GCC PR debug/47510 DWARF provides associated information to detect the
1335 anonymous class linkage name from its typedef.
1337 Parameter TYPE should not yet have CHECK_TYPEDEF applied, this function will
1341 type_name_no_tag_or_error (struct type *type)
1343 struct type *saved_type = type;
1345 struct objfile *objfile;
1347 CHECK_TYPEDEF (type);
1349 name = type_name_no_tag (type);
1353 name = type_name_no_tag (saved_type);
1354 objfile = TYPE_OBJFILE (saved_type);
1355 error (_("Invalid anonymous type %s [in module %s], GCC PR debug/47510 bug?"),
1356 name ? name : "<anonymous>",
1357 objfile ? objfile_name (objfile) : "<arch>");
1360 /* Lookup a typedef or primitive type named NAME, visible in lexical
1361 block BLOCK. If NOERR is nonzero, return zero if NAME is not
1362 suitably defined. */
1365 lookup_typename (const struct language_defn *language,
1366 struct gdbarch *gdbarch, const char *name,
1367 const struct block *block, int noerr)
1372 sym = lookup_symbol_in_language (name, block, VAR_DOMAIN,
1373 language->la_language, NULL);
1374 if (sym != NULL && SYMBOL_CLASS (sym) == LOC_TYPEDEF)
1375 return SYMBOL_TYPE (sym);
1379 error (_("No type named %s."), name);
1383 lookup_unsigned_typename (const struct language_defn *language,
1384 struct gdbarch *gdbarch, const char *name)
1386 char *uns = alloca (strlen (name) + 10);
1388 strcpy (uns, "unsigned ");
1389 strcpy (uns + 9, name);
1390 return lookup_typename (language, gdbarch, uns, (struct block *) NULL, 0);
1394 lookup_signed_typename (const struct language_defn *language,
1395 struct gdbarch *gdbarch, const char *name)
1398 char *uns = alloca (strlen (name) + 8);
1400 strcpy (uns, "signed ");
1401 strcpy (uns + 7, name);
1402 t = lookup_typename (language, gdbarch, uns, (struct block *) NULL, 1);
1403 /* If we don't find "signed FOO" just try again with plain "FOO". */
1406 return lookup_typename (language, gdbarch, name, (struct block *) NULL, 0);
1409 /* Lookup a structure type named "struct NAME",
1410 visible in lexical block BLOCK. */
1413 lookup_struct (const char *name, const struct block *block)
1417 sym = lookup_symbol (name, block, STRUCT_DOMAIN, 0);
1421 error (_("No struct type named %s."), name);
1423 if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_STRUCT)
1425 error (_("This context has class, union or enum %s, not a struct."),
1428 return (SYMBOL_TYPE (sym));
1431 /* Lookup a union type named "union NAME",
1432 visible in lexical block BLOCK. */
1435 lookup_union (const char *name, const struct block *block)
1440 sym = lookup_symbol (name, block, STRUCT_DOMAIN, 0);
1443 error (_("No union type named %s."), name);
1445 t = SYMBOL_TYPE (sym);
1447 if (TYPE_CODE (t) == TYPE_CODE_UNION)
1450 /* If we get here, it's not a union. */
1451 error (_("This context has class, struct or enum %s, not a union."),
1455 /* Lookup an enum type named "enum NAME",
1456 visible in lexical block BLOCK. */
1459 lookup_enum (const char *name, const struct block *block)
1463 sym = lookup_symbol (name, block, STRUCT_DOMAIN, 0);
1466 error (_("No enum type named %s."), name);
1468 if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_ENUM)
1470 error (_("This context has class, struct or union %s, not an enum."),
1473 return (SYMBOL_TYPE (sym));
1476 /* Lookup a template type named "template NAME<TYPE>",
1477 visible in lexical block BLOCK. */
1480 lookup_template_type (char *name, struct type *type,
1481 const struct block *block)
1484 char *nam = (char *)
1485 alloca (strlen (name) + strlen (TYPE_NAME (type)) + 4);
1489 strcat (nam, TYPE_NAME (type));
1490 strcat (nam, " >"); /* FIXME, extra space still introduced in gcc? */
1492 sym = lookup_symbol (nam, block, VAR_DOMAIN, 0);
1496 error (_("No template type named %s."), name);
1498 if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_STRUCT)
1500 error (_("This context has class, union or enum %s, not a struct."),
1503 return (SYMBOL_TYPE (sym));
1506 /* Given a type TYPE, lookup the type of the component of type named
1509 TYPE can be either a struct or union, or a pointer or reference to
1510 a struct or union. If it is a pointer or reference, its target
1511 type is automatically used. Thus '.' and '->' are interchangable,
1512 as specified for the definitions of the expression element types
1513 STRUCTOP_STRUCT and STRUCTOP_PTR.
1515 If NOERR is nonzero, return zero if NAME is not suitably defined.
1516 If NAME is the name of a baseclass type, return that type. */
1519 lookup_struct_elt_type (struct type *type, const char *name, int noerr)
1526 CHECK_TYPEDEF (type);
1527 if (TYPE_CODE (type) != TYPE_CODE_PTR
1528 && TYPE_CODE (type) != TYPE_CODE_REF)
1530 type = TYPE_TARGET_TYPE (type);
1533 if (TYPE_CODE (type) != TYPE_CODE_STRUCT
1534 && TYPE_CODE (type) != TYPE_CODE_UNION)
1536 type_name = type_to_string (type);
1537 make_cleanup (xfree, type_name);
1538 error (_("Type %s is not a structure or union type."), type_name);
1542 /* FIXME: This change put in by Michael seems incorrect for the case
1543 where the structure tag name is the same as the member name.
1544 I.e. when doing "ptype bell->bar" for "struct foo { int bar; int
1545 foo; } bell;" Disabled by fnf. */
1549 type_name = type_name_no_tag (type);
1550 if (type_name != NULL && strcmp (type_name, name) == 0)
1555 for (i = TYPE_NFIELDS (type) - 1; i >= TYPE_N_BASECLASSES (type); i--)
1557 const char *t_field_name = TYPE_FIELD_NAME (type, i);
1559 if (t_field_name && (strcmp_iw (t_field_name, name) == 0))
1561 return TYPE_FIELD_TYPE (type, i);
1563 else if (!t_field_name || *t_field_name == '\0')
1565 struct type *subtype
1566 = lookup_struct_elt_type (TYPE_FIELD_TYPE (type, i), name, 1);
1568 if (subtype != NULL)
1573 /* OK, it's not in this class. Recursively check the baseclasses. */
1574 for (i = TYPE_N_BASECLASSES (type) - 1; i >= 0; i--)
1578 t = lookup_struct_elt_type (TYPE_BASECLASS (type, i), name, 1);
1590 type_name = type_to_string (type);
1591 make_cleanup (xfree, type_name);
1592 error (_("Type %s has no component named %s."), type_name, name);
1595 /* Store in *MAX the largest number representable by unsigned integer type
1599 get_unsigned_type_max (struct type *type, ULONGEST *max)
1603 CHECK_TYPEDEF (type);
1604 gdb_assert (TYPE_CODE (type) == TYPE_CODE_INT && TYPE_UNSIGNED (type));
1605 gdb_assert (TYPE_LENGTH (type) <= sizeof (ULONGEST));
1607 /* Written this way to avoid overflow. */
1608 n = TYPE_LENGTH (type) * TARGET_CHAR_BIT;
1609 *max = ((((ULONGEST) 1 << (n - 1)) - 1) << 1) | 1;
1612 /* Store in *MIN, *MAX the smallest and largest numbers representable by
1613 signed integer type TYPE. */
1616 get_signed_type_minmax (struct type *type, LONGEST *min, LONGEST *max)
1620 CHECK_TYPEDEF (type);
1621 gdb_assert (TYPE_CODE (type) == TYPE_CODE_INT && !TYPE_UNSIGNED (type));
1622 gdb_assert (TYPE_LENGTH (type) <= sizeof (LONGEST));
1624 n = TYPE_LENGTH (type) * TARGET_CHAR_BIT;
1625 *min = -((ULONGEST) 1 << (n - 1));
1626 *max = ((ULONGEST) 1 << (n - 1)) - 1;
1629 /* Internal routine called by TYPE_VPTR_FIELDNO to return the value of
1630 cplus_stuff.vptr_fieldno.
1632 cplus_stuff is initialized to cplus_struct_default which does not
1633 set vptr_fieldno to -1 for portability reasons (IWBN to use C99
1634 designated initializers). We cope with that here. */
1637 internal_type_vptr_fieldno (struct type *type)
1639 CHECK_TYPEDEF (type);
1640 gdb_assert (TYPE_CODE (type) == TYPE_CODE_STRUCT
1641 || TYPE_CODE (type) == TYPE_CODE_UNION);
1642 if (!HAVE_CPLUS_STRUCT (type))
1644 return TYPE_RAW_CPLUS_SPECIFIC (type)->vptr_fieldno;
1647 /* Set the value of cplus_stuff.vptr_fieldno. */
1650 set_type_vptr_fieldno (struct type *type, int fieldno)
1652 CHECK_TYPEDEF (type);
1653 gdb_assert (TYPE_CODE (type) == TYPE_CODE_STRUCT
1654 || TYPE_CODE (type) == TYPE_CODE_UNION);
1655 if (!HAVE_CPLUS_STRUCT (type))
1656 ALLOCATE_CPLUS_STRUCT_TYPE (type);
1657 TYPE_RAW_CPLUS_SPECIFIC (type)->vptr_fieldno = fieldno;
1660 /* Internal routine called by TYPE_VPTR_BASETYPE to return the value of
1661 cplus_stuff.vptr_basetype. */
1664 internal_type_vptr_basetype (struct type *type)
1666 CHECK_TYPEDEF (type);
1667 gdb_assert (TYPE_CODE (type) == TYPE_CODE_STRUCT
1668 || TYPE_CODE (type) == TYPE_CODE_UNION);
1669 gdb_assert (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_CPLUS_STUFF);
1670 return TYPE_RAW_CPLUS_SPECIFIC (type)->vptr_basetype;
1673 /* Set the value of cplus_stuff.vptr_basetype. */
1676 set_type_vptr_basetype (struct type *type, struct type *basetype)
1678 CHECK_TYPEDEF (type);
1679 gdb_assert (TYPE_CODE (type) == TYPE_CODE_STRUCT
1680 || TYPE_CODE (type) == TYPE_CODE_UNION);
1681 if (!HAVE_CPLUS_STRUCT (type))
1682 ALLOCATE_CPLUS_STRUCT_TYPE (type);
1683 TYPE_RAW_CPLUS_SPECIFIC (type)->vptr_basetype = basetype;
1686 /* Lookup the vptr basetype/fieldno values for TYPE.
1687 If found store vptr_basetype in *BASETYPEP if non-NULL, and return
1688 vptr_fieldno. Also, if found and basetype is from the same objfile,
1690 If not found, return -1 and ignore BASETYPEP.
1691 Callers should be aware that in some cases (for example,
1692 the type or one of its baseclasses is a stub type and we are
1693 debugging a .o file, or the compiler uses DWARF-2 and is not GCC),
1694 this function will not be able to find the
1695 virtual function table pointer, and vptr_fieldno will remain -1 and
1696 vptr_basetype will remain NULL or incomplete. */
1699 get_vptr_fieldno (struct type *type, struct type **basetypep)
1701 CHECK_TYPEDEF (type);
1703 if (TYPE_VPTR_FIELDNO (type) < 0)
1707 /* We must start at zero in case the first (and only) baseclass
1708 is virtual (and hence we cannot share the table pointer). */
1709 for (i = 0; i < TYPE_N_BASECLASSES (type); i++)
1711 struct type *baseclass = check_typedef (TYPE_BASECLASS (type, i));
1713 struct type *basetype;
1715 fieldno = get_vptr_fieldno (baseclass, &basetype);
1718 /* If the type comes from a different objfile we can't cache
1719 it, it may have a different lifetime. PR 2384 */
1720 if (TYPE_OBJFILE (type) == TYPE_OBJFILE (basetype))
1722 set_type_vptr_fieldno (type, fieldno);
1723 set_type_vptr_basetype (type, basetype);
1726 *basetypep = basetype;
1737 *basetypep = TYPE_VPTR_BASETYPE (type);
1738 return TYPE_VPTR_FIELDNO (type);
1743 stub_noname_complaint (void)
1745 complaint (&symfile_complaints, _("stub type has NULL name"));
1748 /* Worker for is_dynamic_type. */
1751 is_dynamic_type_internal (struct type *type, int top_level)
1753 type = check_typedef (type);
1755 /* We only want to recognize references at the outermost level. */
1756 if (top_level && TYPE_CODE (type) == TYPE_CODE_REF)
1757 type = check_typedef (TYPE_TARGET_TYPE (type));
1759 /* Types that have a dynamic TYPE_DATA_LOCATION are considered
1760 dynamic, even if the type itself is statically defined.
1761 From a user's point of view, this may appear counter-intuitive;
1762 but it makes sense in this context, because the point is to determine
1763 whether any part of the type needs to be resolved before it can
1765 if (TYPE_DATA_LOCATION (type) != NULL
1766 && (TYPE_DATA_LOCATION_KIND (type) == PROP_LOCEXPR
1767 || TYPE_DATA_LOCATION_KIND (type) == PROP_LOCLIST))
1770 switch (TYPE_CODE (type))
1772 case TYPE_CODE_RANGE:
1774 /* A range type is obviously dynamic if it has at least one
1775 dynamic bound. But also consider the range type to be
1776 dynamic when its subtype is dynamic, even if the bounds
1777 of the range type are static. It allows us to assume that
1778 the subtype of a static range type is also static. */
1779 return (!has_static_range (TYPE_RANGE_DATA (type))
1780 || is_dynamic_type_internal (TYPE_TARGET_TYPE (type), 0));
1783 case TYPE_CODE_ARRAY:
1785 gdb_assert (TYPE_NFIELDS (type) == 1);
1787 /* The array is dynamic if either the bounds are dynamic,
1788 or the elements it contains have a dynamic contents. */
1789 if (is_dynamic_type_internal (TYPE_INDEX_TYPE (type), 0))
1791 return is_dynamic_type_internal (TYPE_TARGET_TYPE (type), 0);
1794 case TYPE_CODE_STRUCT:
1795 case TYPE_CODE_UNION:
1799 for (i = 0; i < TYPE_NFIELDS (type); ++i)
1800 if (!field_is_static (&TYPE_FIELD (type, i))
1801 && is_dynamic_type_internal (TYPE_FIELD_TYPE (type, i), 0))
1810 /* See gdbtypes.h. */
1813 is_dynamic_type (struct type *type)
1815 return is_dynamic_type_internal (type, 1);
1818 static struct type *resolve_dynamic_type_internal
1819 (struct type *type, struct property_addr_info *addr_stack, int top_level);
1821 /* Given a dynamic range type (dyn_range_type) and a stack of
1822 struct property_addr_info elements, return a static version
1825 static struct type *
1826 resolve_dynamic_range (struct type *dyn_range_type,
1827 struct property_addr_info *addr_stack)
1830 struct type *static_range_type, *static_target_type;
1831 const struct dynamic_prop *prop;
1832 const struct dwarf2_locexpr_baton *baton;
1833 struct dynamic_prop low_bound, high_bound;
1835 gdb_assert (TYPE_CODE (dyn_range_type) == TYPE_CODE_RANGE);
1837 prop = &TYPE_RANGE_DATA (dyn_range_type)->low;
1838 if (dwarf2_evaluate_property (prop, addr_stack, &value))
1840 low_bound.kind = PROP_CONST;
1841 low_bound.data.const_val = value;
1845 low_bound.kind = PROP_UNDEFINED;
1846 low_bound.data.const_val = 0;
1849 prop = &TYPE_RANGE_DATA (dyn_range_type)->high;
1850 if (dwarf2_evaluate_property (prop, addr_stack, &value))
1852 high_bound.kind = PROP_CONST;
1853 high_bound.data.const_val = value;
1855 if (TYPE_RANGE_DATA (dyn_range_type)->flag_upper_bound_is_count)
1856 high_bound.data.const_val
1857 = low_bound.data.const_val + high_bound.data.const_val - 1;
1861 high_bound.kind = PROP_UNDEFINED;
1862 high_bound.data.const_val = 0;
1866 = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (dyn_range_type),
1868 static_range_type = create_range_type (copy_type (dyn_range_type),
1870 &low_bound, &high_bound);
1871 TYPE_RANGE_DATA (static_range_type)->flag_bound_evaluated = 1;
1872 return static_range_type;
1875 /* Resolves dynamic bound values of an array type TYPE to static ones.
1876 ADDR_STACK is a stack of struct property_addr_info to be used
1877 if needed during the dynamic resolution. */
1879 static struct type *
1880 resolve_dynamic_array (struct type *type,
1881 struct property_addr_info *addr_stack)
1884 struct type *elt_type;
1885 struct type *range_type;
1886 struct type *ary_dim;
1888 gdb_assert (TYPE_CODE (type) == TYPE_CODE_ARRAY);
1891 range_type = check_typedef (TYPE_INDEX_TYPE (elt_type));
1892 range_type = resolve_dynamic_range (range_type, addr_stack);
1894 ary_dim = check_typedef (TYPE_TARGET_TYPE (elt_type));
1896 if (ary_dim != NULL && TYPE_CODE (ary_dim) == TYPE_CODE_ARRAY)
1897 elt_type = resolve_dynamic_array (TYPE_TARGET_TYPE (type), addr_stack);
1899 elt_type = TYPE_TARGET_TYPE (type);
1901 return create_array_type (copy_type (type),
1906 /* Resolve dynamic bounds of members of the union TYPE to static
1907 bounds. ADDR_STACK is a stack of struct property_addr_info
1908 to be used if needed during the dynamic resolution. */
1910 static struct type *
1911 resolve_dynamic_union (struct type *type,
1912 struct property_addr_info *addr_stack)
1914 struct type *resolved_type;
1916 unsigned int max_len = 0;
1918 gdb_assert (TYPE_CODE (type) == TYPE_CODE_UNION);
1920 resolved_type = copy_type (type);
1921 TYPE_FIELDS (resolved_type)
1922 = TYPE_ALLOC (resolved_type,
1923 TYPE_NFIELDS (resolved_type) * sizeof (struct field));
1924 memcpy (TYPE_FIELDS (resolved_type),
1926 TYPE_NFIELDS (resolved_type) * sizeof (struct field));
1927 for (i = 0; i < TYPE_NFIELDS (resolved_type); ++i)
1931 if (field_is_static (&TYPE_FIELD (type, i)))
1934 t = resolve_dynamic_type_internal (TYPE_FIELD_TYPE (resolved_type, i),
1936 TYPE_FIELD_TYPE (resolved_type, i) = t;
1937 if (TYPE_LENGTH (t) > max_len)
1938 max_len = TYPE_LENGTH (t);
1941 TYPE_LENGTH (resolved_type) = max_len;
1942 return resolved_type;
1945 /* Resolve dynamic bounds of members of the struct TYPE to static
1946 bounds. ADDR_STACK is a stack of struct property_addr_info to
1947 be used if needed during the dynamic resolution. */
1949 static struct type *
1950 resolve_dynamic_struct (struct type *type,
1951 struct property_addr_info *addr_stack)
1953 struct type *resolved_type;
1955 unsigned resolved_type_bit_length = 0;
1957 gdb_assert (TYPE_CODE (type) == TYPE_CODE_STRUCT);
1958 gdb_assert (TYPE_NFIELDS (type) > 0);
1960 resolved_type = copy_type (type);
1961 TYPE_FIELDS (resolved_type)
1962 = TYPE_ALLOC (resolved_type,
1963 TYPE_NFIELDS (resolved_type) * sizeof (struct field));
1964 memcpy (TYPE_FIELDS (resolved_type),
1966 TYPE_NFIELDS (resolved_type) * sizeof (struct field));
1967 for (i = 0; i < TYPE_NFIELDS (resolved_type); ++i)
1969 unsigned new_bit_length;
1970 struct property_addr_info pinfo;
1972 if (field_is_static (&TYPE_FIELD (type, i)))
1975 /* As we know this field is not a static field, the field's
1976 field_loc_kind should be FIELD_LOC_KIND_BITPOS. Verify
1977 this is the case, but only trigger a simple error rather
1978 than an internal error if that fails. While failing
1979 that verification indicates a bug in our code, the error
1980 is not severe enough to suggest to the user he stops
1981 his debugging session because of it. */
1982 if (TYPE_FIELD_LOC_KIND (type, i) != FIELD_LOC_KIND_BITPOS)
1983 error (_("Cannot determine struct field location"
1984 " (invalid location kind)"));
1986 pinfo.type = check_typedef (TYPE_FIELD_TYPE (type, i));
1987 pinfo.addr = addr_stack->addr;
1988 pinfo.next = addr_stack;
1990 TYPE_FIELD_TYPE (resolved_type, i)
1991 = resolve_dynamic_type_internal (TYPE_FIELD_TYPE (resolved_type, i),
1993 gdb_assert (TYPE_FIELD_LOC_KIND (resolved_type, i)
1994 == FIELD_LOC_KIND_BITPOS);
1996 new_bit_length = TYPE_FIELD_BITPOS (resolved_type, i);
1997 if (TYPE_FIELD_BITSIZE (resolved_type, i) != 0)
1998 new_bit_length += TYPE_FIELD_BITSIZE (resolved_type, i);
2000 new_bit_length += (TYPE_LENGTH (TYPE_FIELD_TYPE (resolved_type, i))
2003 /* Normally, we would use the position and size of the last field
2004 to determine the size of the enclosing structure. But GCC seems
2005 to be encoding the position of some fields incorrectly when
2006 the struct contains a dynamic field that is not placed last.
2007 So we compute the struct size based on the field that has
2008 the highest position + size - probably the best we can do. */
2009 if (new_bit_length > resolved_type_bit_length)
2010 resolved_type_bit_length = new_bit_length;
2013 TYPE_LENGTH (resolved_type)
2014 = (resolved_type_bit_length + TARGET_CHAR_BIT - 1) / TARGET_CHAR_BIT;
2016 return resolved_type;
2019 /* Worker for resolved_dynamic_type. */
2021 static struct type *
2022 resolve_dynamic_type_internal (struct type *type,
2023 struct property_addr_info *addr_stack,
2026 struct type *real_type = check_typedef (type);
2027 struct type *resolved_type = type;
2028 struct dynamic_prop *prop;
2031 if (!is_dynamic_type_internal (real_type, top_level))
2034 if (TYPE_CODE (type) == TYPE_CODE_TYPEDEF)
2036 resolved_type = copy_type (type);
2037 TYPE_TARGET_TYPE (resolved_type)
2038 = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (type), addr_stack,
2043 /* Before trying to resolve TYPE, make sure it is not a stub. */
2046 switch (TYPE_CODE (type))
2050 struct property_addr_info pinfo;
2052 pinfo.type = check_typedef (TYPE_TARGET_TYPE (type));
2053 pinfo.addr = read_memory_typed_address (addr_stack->addr, type);
2054 pinfo.next = addr_stack;
2056 resolved_type = copy_type (type);
2057 TYPE_TARGET_TYPE (resolved_type)
2058 = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (type),
2063 case TYPE_CODE_ARRAY:
2064 resolved_type = resolve_dynamic_array (type, addr_stack);
2067 case TYPE_CODE_RANGE:
2068 resolved_type = resolve_dynamic_range (type, addr_stack);
2071 case TYPE_CODE_UNION:
2072 resolved_type = resolve_dynamic_union (type, addr_stack);
2075 case TYPE_CODE_STRUCT:
2076 resolved_type = resolve_dynamic_struct (type, addr_stack);
2081 /* Resolve data_location attribute. */
2082 prop = TYPE_DATA_LOCATION (resolved_type);
2083 if (prop != NULL && dwarf2_evaluate_property (prop, addr_stack, &value))
2085 TYPE_DYN_PROP_ADDR (prop) = value;
2086 TYPE_DYN_PROP_KIND (prop) = PROP_CONST;
2089 return resolved_type;
2092 /* See gdbtypes.h */
2095 resolve_dynamic_type (struct type *type, CORE_ADDR addr)
2097 struct property_addr_info pinfo = {check_typedef (type), addr, NULL};
2099 return resolve_dynamic_type_internal (type, &pinfo, 1);
2102 /* See gdbtypes.h */
2104 struct dynamic_prop *
2105 get_dyn_prop (enum dynamic_prop_node_kind prop_kind, const struct type *type)
2107 struct dynamic_prop_list *node = TYPE_DYN_PROP_LIST (type);
2109 while (node != NULL)
2111 if (node->prop_kind == prop_kind)
2118 /* See gdbtypes.h */
2121 add_dyn_prop (enum dynamic_prop_node_kind prop_kind, struct dynamic_prop prop,
2122 struct type *type, struct objfile *objfile)
2124 struct dynamic_prop_list *temp;
2126 gdb_assert (TYPE_OBJFILE_OWNED (type));
2128 temp = obstack_alloc (&objfile->objfile_obstack,
2129 sizeof (struct dynamic_prop_list));
2130 temp->prop_kind = prop_kind;
2132 temp->next = TYPE_DYN_PROP_LIST (type);
2134 TYPE_DYN_PROP_LIST (type) = temp;
2138 /* Find the real type of TYPE. This function returns the real type,
2139 after removing all layers of typedefs, and completing opaque or stub
2140 types. Completion changes the TYPE argument, but stripping of
2143 Instance flags (e.g. const/volatile) are preserved as typedefs are
2144 stripped. If necessary a new qualified form of the underlying type
2147 NOTE: This will return a typedef if TYPE_TARGET_TYPE for the typedef has
2148 not been computed and we're either in the middle of reading symbols, or
2149 there was no name for the typedef in the debug info.
2151 NOTE: Lookup of opaque types can throw errors for invalid symbol files.
2152 QUITs in the symbol reading code can also throw.
2153 Thus this function can throw an exception.
2155 If TYPE is a TYPE_CODE_TYPEDEF, its length is updated to the length of
2158 If this is a stubbed struct (i.e. declared as struct foo *), see if
2159 we can find a full definition in some other file. If so, copy this
2160 definition, so we can use it in future. There used to be a comment
2161 (but not any code) that if we don't find a full definition, we'd
2162 set a flag so we don't spend time in the future checking the same
2163 type. That would be a mistake, though--we might load in more
2164 symbols which contain a full definition for the type. */
2167 check_typedef (struct type *type)
2169 struct type *orig_type = type;
2170 /* While we're removing typedefs, we don't want to lose qualifiers.
2171 E.g., const/volatile. */
2172 int instance_flags = TYPE_INSTANCE_FLAGS (type);
2176 while (TYPE_CODE (type) == TYPE_CODE_TYPEDEF)
2178 if (!TYPE_TARGET_TYPE (type))
2183 /* It is dangerous to call lookup_symbol if we are currently
2184 reading a symtab. Infinite recursion is one danger. */
2185 if (currently_reading_symtab)
2186 return make_qualified_type (type, instance_flags, NULL);
2188 name = type_name_no_tag (type);
2189 /* FIXME: shouldn't we separately check the TYPE_NAME and
2190 the TYPE_TAG_NAME, and look in STRUCT_DOMAIN and/or
2191 VAR_DOMAIN as appropriate? (this code was written before
2192 TYPE_NAME and TYPE_TAG_NAME were separate). */
2195 stub_noname_complaint ();
2196 return make_qualified_type (type, instance_flags, NULL);
2198 sym = lookup_symbol (name, 0, STRUCT_DOMAIN, 0);
2200 TYPE_TARGET_TYPE (type) = SYMBOL_TYPE (sym);
2201 else /* TYPE_CODE_UNDEF */
2202 TYPE_TARGET_TYPE (type) = alloc_type_arch (get_type_arch (type));
2204 type = TYPE_TARGET_TYPE (type);
2206 /* Preserve the instance flags as we traverse down the typedef chain.
2208 Handling address spaces/classes is nasty, what do we do if there's a
2210 E.g., what if an outer typedef marks the type as class_1 and an inner
2211 typedef marks the type as class_2?
2212 This is the wrong place to do such error checking. We leave it to
2213 the code that created the typedef in the first place to flag the
2214 error. We just pick the outer address space (akin to letting the
2215 outer cast in a chain of casting win), instead of assuming
2216 "it can't happen". */
2218 const int ALL_SPACES = (TYPE_INSTANCE_FLAG_CODE_SPACE
2219 | TYPE_INSTANCE_FLAG_DATA_SPACE);
2220 const int ALL_CLASSES = TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL;
2221 int new_instance_flags = TYPE_INSTANCE_FLAGS (type);
2223 /* Treat code vs data spaces and address classes separately. */
2224 if ((instance_flags & ALL_SPACES) != 0)
2225 new_instance_flags &= ~ALL_SPACES;
2226 if ((instance_flags & ALL_CLASSES) != 0)
2227 new_instance_flags &= ~ALL_CLASSES;
2229 instance_flags |= new_instance_flags;
2233 /* If this is a struct/class/union with no fields, then check
2234 whether a full definition exists somewhere else. This is for
2235 systems where a type definition with no fields is issued for such
2236 types, instead of identifying them as stub types in the first
2239 if (TYPE_IS_OPAQUE (type)
2240 && opaque_type_resolution
2241 && !currently_reading_symtab)
2243 const char *name = type_name_no_tag (type);
2244 struct type *newtype;
2248 stub_noname_complaint ();
2249 return make_qualified_type (type, instance_flags, NULL);
2251 newtype = lookup_transparent_type (name);
2255 /* If the resolved type and the stub are in the same
2256 objfile, then replace the stub type with the real deal.
2257 But if they're in separate objfiles, leave the stub
2258 alone; we'll just look up the transparent type every time
2259 we call check_typedef. We can't create pointers between
2260 types allocated to different objfiles, since they may
2261 have different lifetimes. Trying to copy NEWTYPE over to
2262 TYPE's objfile is pointless, too, since you'll have to
2263 move over any other types NEWTYPE refers to, which could
2264 be an unbounded amount of stuff. */
2265 if (TYPE_OBJFILE (newtype) == TYPE_OBJFILE (type))
2266 type = make_qualified_type (newtype,
2267 TYPE_INSTANCE_FLAGS (type),
2273 /* Otherwise, rely on the stub flag being set for opaque/stubbed
2275 else if (TYPE_STUB (type) && !currently_reading_symtab)
2277 const char *name = type_name_no_tag (type);
2278 /* FIXME: shouldn't we separately check the TYPE_NAME and the
2279 TYPE_TAG_NAME, and look in STRUCT_DOMAIN and/or VAR_DOMAIN
2280 as appropriate? (this code was written before TYPE_NAME and
2281 TYPE_TAG_NAME were separate). */
2286 stub_noname_complaint ();
2287 return make_qualified_type (type, instance_flags, NULL);
2289 sym = lookup_symbol (name, 0, STRUCT_DOMAIN, 0);
2292 /* Same as above for opaque types, we can replace the stub
2293 with the complete type only if they are in the same
2295 if (TYPE_OBJFILE (SYMBOL_TYPE(sym)) == TYPE_OBJFILE (type))
2296 type = make_qualified_type (SYMBOL_TYPE (sym),
2297 TYPE_INSTANCE_FLAGS (type),
2300 type = SYMBOL_TYPE (sym);
2304 if (TYPE_TARGET_STUB (type))
2306 struct type *range_type;
2307 struct type *target_type = check_typedef (TYPE_TARGET_TYPE (type));
2309 if (TYPE_STUB (target_type) || TYPE_TARGET_STUB (target_type))
2311 /* Nothing we can do. */
2313 else if (TYPE_CODE (type) == TYPE_CODE_RANGE)
2315 TYPE_LENGTH (type) = TYPE_LENGTH (target_type);
2316 TYPE_TARGET_STUB (type) = 0;
2320 type = make_qualified_type (type, instance_flags, NULL);
2322 /* Cache TYPE_LENGTH for future use. */
2323 TYPE_LENGTH (orig_type) = TYPE_LENGTH (type);
2328 /* Parse a type expression in the string [P..P+LENGTH). If an error
2329 occurs, silently return a void type. */
2331 static struct type *
2332 safe_parse_type (struct gdbarch *gdbarch, char *p, int length)
2334 struct ui_file *saved_gdb_stderr;
2335 struct type *type = NULL; /* Initialize to keep gcc happy. */
2337 /* Suppress error messages. */
2338 saved_gdb_stderr = gdb_stderr;
2339 gdb_stderr = ui_file_new ();
2341 /* Call parse_and_eval_type() without fear of longjmp()s. */
2344 type = parse_and_eval_type (p, length);
2346 CATCH (except, RETURN_MASK_ERROR)
2348 type = builtin_type (gdbarch)->builtin_void;
2352 /* Stop suppressing error messages. */
2353 ui_file_delete (gdb_stderr);
2354 gdb_stderr = saved_gdb_stderr;
2359 /* Ugly hack to convert method stubs into method types.
2361 He ain't kiddin'. This demangles the name of the method into a
2362 string including argument types, parses out each argument type,
2363 generates a string casting a zero to that type, evaluates the
2364 string, and stuffs the resulting type into an argtype vector!!!
2365 Then it knows the type of the whole function (including argument
2366 types for overloading), which info used to be in the stab's but was
2367 removed to hack back the space required for them. */
2370 check_stub_method (struct type *type, int method_id, int signature_id)
2372 struct gdbarch *gdbarch = get_type_arch (type);
2374 char *mangled_name = gdb_mangle_name (type, method_id, signature_id);
2375 char *demangled_name = gdb_demangle (mangled_name,
2376 DMGL_PARAMS | DMGL_ANSI);
2377 char *argtypetext, *p;
2378 int depth = 0, argcount = 1;
2379 struct field *argtypes;
2382 /* Make sure we got back a function string that we can use. */
2384 p = strchr (demangled_name, '(');
2388 if (demangled_name == NULL || p == NULL)
2389 error (_("Internal: Cannot demangle mangled name `%s'."),
2392 /* Now, read in the parameters that define this type. */
2397 if (*p == '(' || *p == '<')
2401 else if (*p == ')' || *p == '>')
2405 else if (*p == ',' && depth == 0)
2413 /* If we read one argument and it was ``void'', don't count it. */
2414 if (startswith (argtypetext, "(void)"))
2417 /* We need one extra slot, for the THIS pointer. */
2419 argtypes = (struct field *)
2420 TYPE_ALLOC (type, (argcount + 1) * sizeof (struct field));
2423 /* Add THIS pointer for non-static methods. */
2424 f = TYPE_FN_FIELDLIST1 (type, method_id);
2425 if (TYPE_FN_FIELD_STATIC_P (f, signature_id))
2429 argtypes[0].type = lookup_pointer_type (type);
2433 if (*p != ')') /* () means no args, skip while. */
2438 if (depth <= 0 && (*p == ',' || *p == ')'))
2440 /* Avoid parsing of ellipsis, they will be handled below.
2441 Also avoid ``void'' as above. */
2442 if (strncmp (argtypetext, "...", p - argtypetext) != 0
2443 && strncmp (argtypetext, "void", p - argtypetext) != 0)
2445 argtypes[argcount].type =
2446 safe_parse_type (gdbarch, argtypetext, p - argtypetext);
2449 argtypetext = p + 1;
2452 if (*p == '(' || *p == '<')
2456 else if (*p == ')' || *p == '>')
2465 TYPE_FN_FIELD_PHYSNAME (f, signature_id) = mangled_name;
2467 /* Now update the old "stub" type into a real type. */
2468 mtype = TYPE_FN_FIELD_TYPE (f, signature_id);
2469 /* MTYPE may currently be a function (TYPE_CODE_FUNC).
2470 We want a method (TYPE_CODE_METHOD). */
2471 smash_to_method_type (mtype, type, TYPE_TARGET_TYPE (mtype),
2472 argtypes, argcount, p[-2] == '.');
2473 TYPE_STUB (mtype) = 0;
2474 TYPE_FN_FIELD_STUB (f, signature_id) = 0;
2476 xfree (demangled_name);
2479 /* This is the external interface to check_stub_method, above. This
2480 function unstubs all of the signatures for TYPE's METHOD_ID method
2481 name. After calling this function TYPE_FN_FIELD_STUB will be
2482 cleared for each signature and TYPE_FN_FIELDLIST_NAME will be
2485 This function unfortunately can not die until stabs do. */
2488 check_stub_method_group (struct type *type, int method_id)
2490 int len = TYPE_FN_FIELDLIST_LENGTH (type, method_id);
2491 struct fn_field *f = TYPE_FN_FIELDLIST1 (type, method_id);
2492 int j, found_stub = 0;
2494 for (j = 0; j < len; j++)
2495 if (TYPE_FN_FIELD_STUB (f, j))
2498 check_stub_method (type, method_id, j);
2501 /* GNU v3 methods with incorrect names were corrected when we read
2502 in type information, because it was cheaper to do it then. The
2503 only GNU v2 methods with incorrect method names are operators and
2504 destructors; destructors were also corrected when we read in type
2507 Therefore the only thing we need to handle here are v2 operator
2509 if (found_stub && !startswith (TYPE_FN_FIELD_PHYSNAME (f, 0), "_Z"))
2512 char dem_opname[256];
2514 ret = cplus_demangle_opname (TYPE_FN_FIELDLIST_NAME (type,
2516 dem_opname, DMGL_ANSI);
2518 ret = cplus_demangle_opname (TYPE_FN_FIELDLIST_NAME (type,
2522 TYPE_FN_FIELDLIST_NAME (type, method_id) = xstrdup (dem_opname);
2526 /* Ensure it is in .rodata (if available) by workarounding GCC PR 44690. */
2527 const struct cplus_struct_type cplus_struct_default = { };
2530 allocate_cplus_struct_type (struct type *type)
2532 if (HAVE_CPLUS_STRUCT (type))
2533 /* Structure was already allocated. Nothing more to do. */
2536 TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_CPLUS_STUFF;
2537 TYPE_RAW_CPLUS_SPECIFIC (type) = (struct cplus_struct_type *)
2538 TYPE_ALLOC (type, sizeof (struct cplus_struct_type));
2539 *(TYPE_RAW_CPLUS_SPECIFIC (type)) = cplus_struct_default;
2540 set_type_vptr_fieldno (type, -1);
2543 const struct gnat_aux_type gnat_aux_default =
2546 /* Set the TYPE's type-specific kind to TYPE_SPECIFIC_GNAT_STUFF,
2547 and allocate the associated gnat-specific data. The gnat-specific
2548 data is also initialized to gnat_aux_default. */
2551 allocate_gnat_aux_type (struct type *type)
2553 TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_GNAT_STUFF;
2554 TYPE_GNAT_SPECIFIC (type) = (struct gnat_aux_type *)
2555 TYPE_ALLOC (type, sizeof (struct gnat_aux_type));
2556 *(TYPE_GNAT_SPECIFIC (type)) = gnat_aux_default;
2559 /* Helper function to initialize the standard scalar types.
2561 If NAME is non-NULL, then it is used to initialize the type name.
2562 Note that NAME is not copied; it is required to have a lifetime at
2563 least as long as OBJFILE. */
2566 init_type (enum type_code code, int length, int flags,
2567 const char *name, struct objfile *objfile)
2571 type = alloc_type (objfile);
2572 TYPE_CODE (type) = code;
2573 TYPE_LENGTH (type) = length;
2575 gdb_assert (!(flags & (TYPE_FLAG_MIN - 1)));
2576 if (flags & TYPE_FLAG_UNSIGNED)
2577 TYPE_UNSIGNED (type) = 1;
2578 if (flags & TYPE_FLAG_NOSIGN)
2579 TYPE_NOSIGN (type) = 1;
2580 if (flags & TYPE_FLAG_STUB)
2581 TYPE_STUB (type) = 1;
2582 if (flags & TYPE_FLAG_TARGET_STUB)
2583 TYPE_TARGET_STUB (type) = 1;
2584 if (flags & TYPE_FLAG_STATIC)
2585 TYPE_STATIC (type) = 1;
2586 if (flags & TYPE_FLAG_PROTOTYPED)
2587 TYPE_PROTOTYPED (type) = 1;
2588 if (flags & TYPE_FLAG_INCOMPLETE)
2589 TYPE_INCOMPLETE (type) = 1;
2590 if (flags & TYPE_FLAG_VARARGS)
2591 TYPE_VARARGS (type) = 1;
2592 if (flags & TYPE_FLAG_VECTOR)
2593 TYPE_VECTOR (type) = 1;
2594 if (flags & TYPE_FLAG_STUB_SUPPORTED)
2595 TYPE_STUB_SUPPORTED (type) = 1;
2596 if (flags & TYPE_FLAG_FIXED_INSTANCE)
2597 TYPE_FIXED_INSTANCE (type) = 1;
2598 if (flags & TYPE_FLAG_GNU_IFUNC)
2599 TYPE_GNU_IFUNC (type) = 1;
2601 TYPE_NAME (type) = name;
2605 if (name && strcmp (name, "char") == 0)
2606 TYPE_NOSIGN (type) = 1;
2610 case TYPE_CODE_STRUCT:
2611 case TYPE_CODE_UNION:
2612 case TYPE_CODE_NAMESPACE:
2613 INIT_CPLUS_SPECIFIC (type);
2616 TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_FLOATFORMAT;
2618 case TYPE_CODE_FUNC:
2619 INIT_FUNC_SPECIFIC (type);
2625 /* Queries on types. */
2628 can_dereference (struct type *t)
2630 /* FIXME: Should we return true for references as well as
2635 && TYPE_CODE (t) == TYPE_CODE_PTR
2636 && TYPE_CODE (TYPE_TARGET_TYPE (t)) != TYPE_CODE_VOID);
2640 is_integral_type (struct type *t)
2645 && ((TYPE_CODE (t) == TYPE_CODE_INT)
2646 || (TYPE_CODE (t) == TYPE_CODE_ENUM)
2647 || (TYPE_CODE (t) == TYPE_CODE_FLAGS)
2648 || (TYPE_CODE (t) == TYPE_CODE_CHAR)
2649 || (TYPE_CODE (t) == TYPE_CODE_RANGE)
2650 || (TYPE_CODE (t) == TYPE_CODE_BOOL)));
2653 /* Return true if TYPE is scalar. */
2656 is_scalar_type (struct type *type)
2658 CHECK_TYPEDEF (type);
2660 switch (TYPE_CODE (type))
2662 case TYPE_CODE_ARRAY:
2663 case TYPE_CODE_STRUCT:
2664 case TYPE_CODE_UNION:
2666 case TYPE_CODE_STRING:
2673 /* Return true if T is scalar, or a composite type which in practice has
2674 the memory layout of a scalar type. E.g., an array or struct with only
2675 one scalar element inside it, or a union with only scalar elements. */
2678 is_scalar_type_recursive (struct type *t)
2682 if (is_scalar_type (t))
2684 /* Are we dealing with an array or string of known dimensions? */
2685 else if ((TYPE_CODE (t) == TYPE_CODE_ARRAY
2686 || TYPE_CODE (t) == TYPE_CODE_STRING) && TYPE_NFIELDS (t) == 1
2687 && TYPE_CODE (TYPE_INDEX_TYPE (t)) == TYPE_CODE_RANGE)
2689 LONGEST low_bound, high_bound;
2690 struct type *elt_type = check_typedef (TYPE_TARGET_TYPE (t));
2692 get_discrete_bounds (TYPE_INDEX_TYPE (t), &low_bound, &high_bound);
2694 return high_bound == low_bound && is_scalar_type_recursive (elt_type);
2696 /* Are we dealing with a struct with one element? */
2697 else if (TYPE_CODE (t) == TYPE_CODE_STRUCT && TYPE_NFIELDS (t) == 1)
2698 return is_scalar_type_recursive (TYPE_FIELD_TYPE (t, 0));
2699 else if (TYPE_CODE (t) == TYPE_CODE_UNION)
2701 int i, n = TYPE_NFIELDS (t);
2703 /* If all elements of the union are scalar, then the union is scalar. */
2704 for (i = 0; i < n; i++)
2705 if (!is_scalar_type_recursive (TYPE_FIELD_TYPE (t, i)))
2714 /* Return true is T is a class or a union. False otherwise. */
2717 class_or_union_p (const struct type *t)
2719 return (TYPE_CODE (t) == TYPE_CODE_STRUCT
2720 || TYPE_CODE (t) == TYPE_CODE_UNION);
2723 /* A helper function which returns true if types A and B represent the
2724 "same" class type. This is true if the types have the same main
2725 type, or the same name. */
2728 class_types_same_p (const struct type *a, const struct type *b)
2730 return (TYPE_MAIN_TYPE (a) == TYPE_MAIN_TYPE (b)
2731 || (TYPE_NAME (a) && TYPE_NAME (b)
2732 && !strcmp (TYPE_NAME (a), TYPE_NAME (b))));
2735 /* If BASE is an ancestor of DCLASS return the distance between them.
2736 otherwise return -1;
2740 class B: public A {};
2741 class C: public B {};
2744 distance_to_ancestor (A, A, 0) = 0
2745 distance_to_ancestor (A, B, 0) = 1
2746 distance_to_ancestor (A, C, 0) = 2
2747 distance_to_ancestor (A, D, 0) = 3
2749 If PUBLIC is 1 then only public ancestors are considered,
2750 and the function returns the distance only if BASE is a public ancestor
2754 distance_to_ancestor (A, D, 1) = -1. */
2757 distance_to_ancestor (struct type *base, struct type *dclass, int is_public)
2762 CHECK_TYPEDEF (base);
2763 CHECK_TYPEDEF (dclass);
2765 if (class_types_same_p (base, dclass))
2768 for (i = 0; i < TYPE_N_BASECLASSES (dclass); i++)
2770 if (is_public && ! BASETYPE_VIA_PUBLIC (dclass, i))
2773 d = distance_to_ancestor (base, TYPE_BASECLASS (dclass, i), is_public);
2781 /* Check whether BASE is an ancestor or base class or DCLASS
2782 Return 1 if so, and 0 if not.
2783 Note: If BASE and DCLASS are of the same type, this function
2784 will return 1. So for some class A, is_ancestor (A, A) will
2788 is_ancestor (struct type *base, struct type *dclass)
2790 return distance_to_ancestor (base, dclass, 0) >= 0;
2793 /* Like is_ancestor, but only returns true when BASE is a public
2794 ancestor of DCLASS. */
2797 is_public_ancestor (struct type *base, struct type *dclass)
2799 return distance_to_ancestor (base, dclass, 1) >= 0;
2802 /* A helper function for is_unique_ancestor. */
2805 is_unique_ancestor_worker (struct type *base, struct type *dclass,
2807 const gdb_byte *valaddr, int embedded_offset,
2808 CORE_ADDR address, struct value *val)
2812 CHECK_TYPEDEF (base);
2813 CHECK_TYPEDEF (dclass);
2815 for (i = 0; i < TYPE_N_BASECLASSES (dclass) && count < 2; ++i)
2820 iter = check_typedef (TYPE_BASECLASS (dclass, i));
2822 this_offset = baseclass_offset (dclass, i, valaddr, embedded_offset,
2825 if (class_types_same_p (base, iter))
2827 /* If this is the first subclass, set *OFFSET and set count
2828 to 1. Otherwise, if this is at the same offset as
2829 previous instances, do nothing. Otherwise, increment
2833 *offset = this_offset;
2836 else if (this_offset == *offset)
2844 count += is_unique_ancestor_worker (base, iter, offset,
2846 embedded_offset + this_offset,
2853 /* Like is_ancestor, but only returns true if BASE is a unique base
2854 class of the type of VAL. */
2857 is_unique_ancestor (struct type *base, struct value *val)
2861 return is_unique_ancestor_worker (base, value_type (val), &offset,
2862 value_contents_for_printing (val),
2863 value_embedded_offset (val),
2864 value_address (val), val) == 1;
2868 /* Overload resolution. */
2870 /* Return the sum of the rank of A with the rank of B. */
2873 sum_ranks (struct rank a, struct rank b)
2876 c.rank = a.rank + b.rank;
2877 c.subrank = a.subrank + b.subrank;
2881 /* Compare rank A and B and return:
2883 1 if a is better than b
2884 -1 if b is better than a. */
2887 compare_ranks (struct rank a, struct rank b)
2889 if (a.rank == b.rank)
2891 if (a.subrank == b.subrank)
2893 if (a.subrank < b.subrank)
2895 if (a.subrank > b.subrank)
2899 if (a.rank < b.rank)
2902 /* a.rank > b.rank */
2906 /* Functions for overload resolution begin here. */
2908 /* Compare two badness vectors A and B and return the result.
2909 0 => A and B are identical
2910 1 => A and B are incomparable
2911 2 => A is better than B
2912 3 => A is worse than B */
2915 compare_badness (struct badness_vector *a, struct badness_vector *b)
2919 short found_pos = 0; /* any positives in c? */
2920 short found_neg = 0; /* any negatives in c? */
2922 /* differing lengths => incomparable */
2923 if (a->length != b->length)
2926 /* Subtract b from a */
2927 for (i = 0; i < a->length; i++)
2929 tmp = compare_ranks (b->rank[i], a->rank[i]);
2939 return 1; /* incomparable */
2941 return 3; /* A > B */
2947 return 2; /* A < B */
2949 return 0; /* A == B */
2953 /* Rank a function by comparing its parameter types (PARMS, length
2954 NPARMS), to the types of an argument list (ARGS, length NARGS).
2955 Return a pointer to a badness vector. This has NARGS + 1
2958 struct badness_vector *
2959 rank_function (struct type **parms, int nparms,
2960 struct value **args, int nargs)
2963 struct badness_vector *bv;
2964 int min_len = nparms < nargs ? nparms : nargs;
2966 bv = xmalloc (sizeof (struct badness_vector));
2967 bv->length = nargs + 1; /* add 1 for the length-match rank. */
2968 bv->rank = XNEWVEC (struct rank, nargs + 1);
2970 /* First compare the lengths of the supplied lists.
2971 If there is a mismatch, set it to a high value. */
2973 /* pai/1997-06-03 FIXME: when we have debug info about default
2974 arguments and ellipsis parameter lists, we should consider those
2975 and rank the length-match more finely. */
2977 LENGTH_MATCH (bv) = (nargs != nparms)
2978 ? LENGTH_MISMATCH_BADNESS
2979 : EXACT_MATCH_BADNESS;
2981 /* Now rank all the parameters of the candidate function. */
2982 for (i = 1; i <= min_len; i++)
2983 bv->rank[i] = rank_one_type (parms[i - 1], value_type (args[i - 1]),
2986 /* If more arguments than parameters, add dummy entries. */
2987 for (i = min_len + 1; i <= nargs; i++)
2988 bv->rank[i] = TOO_FEW_PARAMS_BADNESS;
2993 /* Compare the names of two integer types, assuming that any sign
2994 qualifiers have been checked already. We do it this way because
2995 there may be an "int" in the name of one of the types. */
2998 integer_types_same_name_p (const char *first, const char *second)
3000 int first_p, second_p;
3002 /* If both are shorts, return 1; if neither is a short, keep
3004 first_p = (strstr (first, "short") != NULL);
3005 second_p = (strstr (second, "short") != NULL);
3006 if (first_p && second_p)
3008 if (first_p || second_p)
3011 /* Likewise for long. */
3012 first_p = (strstr (first, "long") != NULL);
3013 second_p = (strstr (second, "long") != NULL);
3014 if (first_p && second_p)
3016 if (first_p || second_p)
3019 /* Likewise for char. */
3020 first_p = (strstr (first, "char") != NULL);
3021 second_p = (strstr (second, "char") != NULL);
3022 if (first_p && second_p)
3024 if (first_p || second_p)
3027 /* They must both be ints. */
3031 /* Compares type A to type B returns 1 if the represent the same type
3035 types_equal (struct type *a, struct type *b)
3037 /* Identical type pointers. */
3038 /* However, this still doesn't catch all cases of same type for b
3039 and a. The reason is that builtin types are different from
3040 the same ones constructed from the object. */
3044 /* Resolve typedefs */
3045 if (TYPE_CODE (a) == TYPE_CODE_TYPEDEF)
3046 a = check_typedef (a);
3047 if (TYPE_CODE (b) == TYPE_CODE_TYPEDEF)
3048 b = check_typedef (b);
3050 /* If after resolving typedefs a and b are not of the same type
3051 code then they are not equal. */
3052 if (TYPE_CODE (a) != TYPE_CODE (b))
3055 /* If a and b are both pointers types or both reference types then
3056 they are equal of the same type iff the objects they refer to are
3057 of the same type. */
3058 if (TYPE_CODE (a) == TYPE_CODE_PTR
3059 || TYPE_CODE (a) == TYPE_CODE_REF)
3060 return types_equal (TYPE_TARGET_TYPE (a),
3061 TYPE_TARGET_TYPE (b));
3063 /* Well, damnit, if the names are exactly the same, I'll say they
3064 are exactly the same. This happens when we generate method
3065 stubs. The types won't point to the same address, but they
3066 really are the same. */
3068 if (TYPE_NAME (a) && TYPE_NAME (b)
3069 && strcmp (TYPE_NAME (a), TYPE_NAME (b)) == 0)
3072 /* Check if identical after resolving typedefs. */
3076 /* Two function types are equal if their argument and return types
3078 if (TYPE_CODE (a) == TYPE_CODE_FUNC)
3082 if (TYPE_NFIELDS (a) != TYPE_NFIELDS (b))
3085 if (!types_equal (TYPE_TARGET_TYPE (a), TYPE_TARGET_TYPE (b)))
3088 for (i = 0; i < TYPE_NFIELDS (a); ++i)
3089 if (!types_equal (TYPE_FIELD_TYPE (a, i), TYPE_FIELD_TYPE (b, i)))
3098 /* Deep comparison of types. */
3100 /* An entry in the type-equality bcache. */
3102 typedef struct type_equality_entry
3104 struct type *type1, *type2;
3105 } type_equality_entry_d;
3107 DEF_VEC_O (type_equality_entry_d);
3109 /* A helper function to compare two strings. Returns 1 if they are
3110 the same, 0 otherwise. Handles NULLs properly. */
3113 compare_maybe_null_strings (const char *s, const char *t)
3115 if (s == NULL && t != NULL)
3117 else if (s != NULL && t == NULL)
3119 else if (s == NULL && t== NULL)
3121 return strcmp (s, t) == 0;
3124 /* A helper function for check_types_worklist that checks two types for
3125 "deep" equality. Returns non-zero if the types are considered the
3126 same, zero otherwise. */
3129 check_types_equal (struct type *type1, struct type *type2,
3130 VEC (type_equality_entry_d) **worklist)
3132 CHECK_TYPEDEF (type1);
3133 CHECK_TYPEDEF (type2);
3138 if (TYPE_CODE (type1) != TYPE_CODE (type2)
3139 || TYPE_LENGTH (type1) != TYPE_LENGTH (type2)
3140 || TYPE_UNSIGNED (type1) != TYPE_UNSIGNED (type2)
3141 || TYPE_NOSIGN (type1) != TYPE_NOSIGN (type2)
3142 || TYPE_VARARGS (type1) != TYPE_VARARGS (type2)
3143 || TYPE_VECTOR (type1) != TYPE_VECTOR (type2)
3144 || TYPE_NOTTEXT (type1) != TYPE_NOTTEXT (type2)
3145 || TYPE_INSTANCE_FLAGS (type1) != TYPE_INSTANCE_FLAGS (type2)
3146 || TYPE_NFIELDS (type1) != TYPE_NFIELDS (type2))
3149 if (!compare_maybe_null_strings (TYPE_TAG_NAME (type1),
3150 TYPE_TAG_NAME (type2)))
3152 if (!compare_maybe_null_strings (TYPE_NAME (type1), TYPE_NAME (type2)))
3155 if (TYPE_CODE (type1) == TYPE_CODE_RANGE)
3157 if (memcmp (TYPE_RANGE_DATA (type1), TYPE_RANGE_DATA (type2),
3158 sizeof (*TYPE_RANGE_DATA (type1))) != 0)
3165 for (i = 0; i < TYPE_NFIELDS (type1); ++i)
3167 const struct field *field1 = &TYPE_FIELD (type1, i);
3168 const struct field *field2 = &TYPE_FIELD (type2, i);
3169 struct type_equality_entry entry;
3171 if (FIELD_ARTIFICIAL (*field1) != FIELD_ARTIFICIAL (*field2)
3172 || FIELD_BITSIZE (*field1) != FIELD_BITSIZE (*field2)
3173 || FIELD_LOC_KIND (*field1) != FIELD_LOC_KIND (*field2))
3175 if (!compare_maybe_null_strings (FIELD_NAME (*field1),
3176 FIELD_NAME (*field2)))
3178 switch (FIELD_LOC_KIND (*field1))
3180 case FIELD_LOC_KIND_BITPOS:
3181 if (FIELD_BITPOS (*field1) != FIELD_BITPOS (*field2))
3184 case FIELD_LOC_KIND_ENUMVAL:
3185 if (FIELD_ENUMVAL (*field1) != FIELD_ENUMVAL (*field2))
3188 case FIELD_LOC_KIND_PHYSADDR:
3189 if (FIELD_STATIC_PHYSADDR (*field1)
3190 != FIELD_STATIC_PHYSADDR (*field2))
3193 case FIELD_LOC_KIND_PHYSNAME:
3194 if (!compare_maybe_null_strings (FIELD_STATIC_PHYSNAME (*field1),
3195 FIELD_STATIC_PHYSNAME (*field2)))
3198 case FIELD_LOC_KIND_DWARF_BLOCK:
3200 struct dwarf2_locexpr_baton *block1, *block2;
3202 block1 = FIELD_DWARF_BLOCK (*field1);
3203 block2 = FIELD_DWARF_BLOCK (*field2);
3204 if (block1->per_cu != block2->per_cu
3205 || block1->size != block2->size
3206 || memcmp (block1->data, block2->data, block1->size) != 0)
3211 internal_error (__FILE__, __LINE__, _("Unsupported field kind "
3212 "%d by check_types_equal"),
3213 FIELD_LOC_KIND (*field1));
3216 entry.type1 = FIELD_TYPE (*field1);
3217 entry.type2 = FIELD_TYPE (*field2);
3218 VEC_safe_push (type_equality_entry_d, *worklist, &entry);
3222 if (TYPE_TARGET_TYPE (type1) != NULL)
3224 struct type_equality_entry entry;
3226 if (TYPE_TARGET_TYPE (type2) == NULL)
3229 entry.type1 = TYPE_TARGET_TYPE (type1);
3230 entry.type2 = TYPE_TARGET_TYPE (type2);
3231 VEC_safe_push (type_equality_entry_d, *worklist, &entry);
3233 else if (TYPE_TARGET_TYPE (type2) != NULL)
3239 /* Check types on a worklist for equality. Returns zero if any pair
3240 is not equal, non-zero if they are all considered equal. */
3243 check_types_worklist (VEC (type_equality_entry_d) **worklist,
3244 struct bcache *cache)
3246 while (!VEC_empty (type_equality_entry_d, *worklist))
3248 struct type_equality_entry entry;
3251 entry = *VEC_last (type_equality_entry_d, *worklist);
3252 VEC_pop (type_equality_entry_d, *worklist);
3254 /* If the type pair has already been visited, we know it is
3256 bcache_full (&entry, sizeof (entry), cache, &added);
3260 if (check_types_equal (entry.type1, entry.type2, worklist) == 0)
3267 /* Return non-zero if types TYPE1 and TYPE2 are equal, as determined by a
3268 "deep comparison". Otherwise return zero. */
3271 types_deeply_equal (struct type *type1, struct type *type2)
3273 struct gdb_exception except = exception_none;
3275 struct bcache *cache;
3276 VEC (type_equality_entry_d) *worklist = NULL;
3277 struct type_equality_entry entry;
3279 gdb_assert (type1 != NULL && type2 != NULL);
3281 /* Early exit for the simple case. */
3285 cache = bcache_xmalloc (NULL, NULL);
3287 entry.type1 = type1;
3288 entry.type2 = type2;
3289 VEC_safe_push (type_equality_entry_d, worklist, &entry);
3291 /* check_types_worklist calls several nested helper functions, some
3292 of which can raise a GDB exception, so we just check and rethrow
3293 here. If there is a GDB exception, a comparison is not capable
3294 (or trusted), so exit. */
3297 result = check_types_worklist (&worklist, cache);
3299 CATCH (ex, RETURN_MASK_ALL)
3305 bcache_xfree (cache);
3306 VEC_free (type_equality_entry_d, worklist);
3308 /* Rethrow if there was a problem. */
3309 if (except.reason < 0)
3310 throw_exception (except);
3315 /* Compare one type (PARM) for compatibility with another (ARG).
3316 * PARM is intended to be the parameter type of a function; and
3317 * ARG is the supplied argument's type. This function tests if
3318 * the latter can be converted to the former.
3319 * VALUE is the argument's value or NULL if none (or called recursively)
3321 * Return 0 if they are identical types;
3322 * Otherwise, return an integer which corresponds to how compatible
3323 * PARM is to ARG. The higher the return value, the worse the match.
3324 * Generally the "bad" conversions are all uniformly assigned a 100. */
3327 rank_one_type (struct type *parm, struct type *arg, struct value *value)
3329 struct rank rank = {0,0};
3331 if (types_equal (parm, arg))
3332 return EXACT_MATCH_BADNESS;
3334 /* Resolve typedefs */
3335 if (TYPE_CODE (parm) == TYPE_CODE_TYPEDEF)
3336 parm = check_typedef (parm);
3337 if (TYPE_CODE (arg) == TYPE_CODE_TYPEDEF)
3338 arg = check_typedef (arg);
3340 /* See through references, since we can almost make non-references
3342 if (TYPE_CODE (arg) == TYPE_CODE_REF)
3343 return (sum_ranks (rank_one_type (parm, TYPE_TARGET_TYPE (arg), NULL),
3344 REFERENCE_CONVERSION_BADNESS));
3345 if (TYPE_CODE (parm) == TYPE_CODE_REF)
3346 return (sum_ranks (rank_one_type (TYPE_TARGET_TYPE (parm), arg, NULL),
3347 REFERENCE_CONVERSION_BADNESS));
3349 /* Debugging only. */
3350 fprintf_filtered (gdb_stderr,
3351 "------ Arg is %s [%d], parm is %s [%d]\n",
3352 TYPE_NAME (arg), TYPE_CODE (arg),
3353 TYPE_NAME (parm), TYPE_CODE (parm));
3355 /* x -> y means arg of type x being supplied for parameter of type y. */
3357 switch (TYPE_CODE (parm))
3360 switch (TYPE_CODE (arg))
3364 /* Allowed pointer conversions are:
3365 (a) pointer to void-pointer conversion. */
3366 if (TYPE_CODE (TYPE_TARGET_TYPE (parm)) == TYPE_CODE_VOID)
3367 return VOID_PTR_CONVERSION_BADNESS;
3369 /* (b) pointer to ancestor-pointer conversion. */
3370 rank.subrank = distance_to_ancestor (TYPE_TARGET_TYPE (parm),
3371 TYPE_TARGET_TYPE (arg),
3373 if (rank.subrank >= 0)
3374 return sum_ranks (BASE_PTR_CONVERSION_BADNESS, rank);
3376 return INCOMPATIBLE_TYPE_BADNESS;
3377 case TYPE_CODE_ARRAY:
3378 if (types_equal (TYPE_TARGET_TYPE (parm),
3379 TYPE_TARGET_TYPE (arg)))
3380 return EXACT_MATCH_BADNESS;
3381 return INCOMPATIBLE_TYPE_BADNESS;
3382 case TYPE_CODE_FUNC:
3383 return rank_one_type (TYPE_TARGET_TYPE (parm), arg, NULL);
3385 if (value != NULL && TYPE_CODE (value_type (value)) == TYPE_CODE_INT)
3387 if (value_as_long (value) == 0)
3389 /* Null pointer conversion: allow it to be cast to a pointer.
3390 [4.10.1 of C++ standard draft n3290] */
3391 return NULL_POINTER_CONVERSION_BADNESS;
3395 /* If type checking is disabled, allow the conversion. */
3396 if (!strict_type_checking)
3397 return NS_INTEGER_POINTER_CONVERSION_BADNESS;
3401 case TYPE_CODE_ENUM:
3402 case TYPE_CODE_FLAGS:
3403 case TYPE_CODE_CHAR:
3404 case TYPE_CODE_RANGE:
3405 case TYPE_CODE_BOOL:
3407 return INCOMPATIBLE_TYPE_BADNESS;
3409 case TYPE_CODE_ARRAY:
3410 switch (TYPE_CODE (arg))
3413 case TYPE_CODE_ARRAY:
3414 return rank_one_type (TYPE_TARGET_TYPE (parm),
3415 TYPE_TARGET_TYPE (arg), NULL);
3417 return INCOMPATIBLE_TYPE_BADNESS;
3419 case TYPE_CODE_FUNC:
3420 switch (TYPE_CODE (arg))
3422 case TYPE_CODE_PTR: /* funcptr -> func */
3423 return rank_one_type (parm, TYPE_TARGET_TYPE (arg), NULL);
3425 return INCOMPATIBLE_TYPE_BADNESS;
3428 switch (TYPE_CODE (arg))
3431 if (TYPE_LENGTH (arg) == TYPE_LENGTH (parm))
3433 /* Deal with signed, unsigned, and plain chars and
3434 signed and unsigned ints. */
3435 if (TYPE_NOSIGN (parm))
3437 /* This case only for character types. */
3438 if (TYPE_NOSIGN (arg))
3439 return EXACT_MATCH_BADNESS; /* plain char -> plain char */
3440 else /* signed/unsigned char -> plain char */
3441 return INTEGER_CONVERSION_BADNESS;
3443 else if (TYPE_UNSIGNED (parm))
3445 if (TYPE_UNSIGNED (arg))
3447 /* unsigned int -> unsigned int, or
3448 unsigned long -> unsigned long */
3449 if (integer_types_same_name_p (TYPE_NAME (parm),
3451 return EXACT_MATCH_BADNESS;
3452 else if (integer_types_same_name_p (TYPE_NAME (arg),
3454 && integer_types_same_name_p (TYPE_NAME (parm),
3456 /* unsigned int -> unsigned long */
3457 return INTEGER_PROMOTION_BADNESS;
3459 /* unsigned long -> unsigned int */
3460 return INTEGER_CONVERSION_BADNESS;
3464 if (integer_types_same_name_p (TYPE_NAME (arg),
3466 && integer_types_same_name_p (TYPE_NAME (parm),
3468 /* signed long -> unsigned int */
3469 return INTEGER_CONVERSION_BADNESS;
3471 /* signed int/long -> unsigned int/long */
3472 return INTEGER_CONVERSION_BADNESS;
3475 else if (!TYPE_NOSIGN (arg) && !TYPE_UNSIGNED (arg))
3477 if (integer_types_same_name_p (TYPE_NAME (parm),
3479 return EXACT_MATCH_BADNESS;
3480 else if (integer_types_same_name_p (TYPE_NAME (arg),
3482 && integer_types_same_name_p (TYPE_NAME (parm),
3484 return INTEGER_PROMOTION_BADNESS;
3486 return INTEGER_CONVERSION_BADNESS;
3489 return INTEGER_CONVERSION_BADNESS;
3491 else if (TYPE_LENGTH (arg) < TYPE_LENGTH (parm))
3492 return INTEGER_PROMOTION_BADNESS;
3494 return INTEGER_CONVERSION_BADNESS;
3495 case TYPE_CODE_ENUM:
3496 case TYPE_CODE_FLAGS:
3497 case TYPE_CODE_CHAR:
3498 case TYPE_CODE_RANGE:
3499 case TYPE_CODE_BOOL:
3500 if (TYPE_DECLARED_CLASS (arg))
3501 return INCOMPATIBLE_TYPE_BADNESS;
3502 return INTEGER_PROMOTION_BADNESS;
3504 return INT_FLOAT_CONVERSION_BADNESS;
3506 return NS_POINTER_CONVERSION_BADNESS;
3508 return INCOMPATIBLE_TYPE_BADNESS;
3511 case TYPE_CODE_ENUM:
3512 switch (TYPE_CODE (arg))
3515 case TYPE_CODE_CHAR:
3516 case TYPE_CODE_RANGE:
3517 case TYPE_CODE_BOOL:
3518 case TYPE_CODE_ENUM:
3519 if (TYPE_DECLARED_CLASS (parm) || TYPE_DECLARED_CLASS (arg))
3520 return INCOMPATIBLE_TYPE_BADNESS;
3521 return INTEGER_CONVERSION_BADNESS;
3523 return INT_FLOAT_CONVERSION_BADNESS;
3525 return INCOMPATIBLE_TYPE_BADNESS;
3528 case TYPE_CODE_CHAR:
3529 switch (TYPE_CODE (arg))
3531 case TYPE_CODE_RANGE:
3532 case TYPE_CODE_BOOL:
3533 case TYPE_CODE_ENUM:
3534 if (TYPE_DECLARED_CLASS (arg))
3535 return INCOMPATIBLE_TYPE_BADNESS;
3536 return INTEGER_CONVERSION_BADNESS;
3538 return INT_FLOAT_CONVERSION_BADNESS;
3540 if (TYPE_LENGTH (arg) > TYPE_LENGTH (parm))
3541 return INTEGER_CONVERSION_BADNESS;
3542 else if (TYPE_LENGTH (arg) < TYPE_LENGTH (parm))
3543 return INTEGER_PROMOTION_BADNESS;
3544 /* >>> !! else fall through !! <<< */
3545 case TYPE_CODE_CHAR:
3546 /* Deal with signed, unsigned, and plain chars for C++ and
3547 with int cases falling through from previous case. */
3548 if (TYPE_NOSIGN (parm))
3550 if (TYPE_NOSIGN (arg))
3551 return EXACT_MATCH_BADNESS;
3553 return INTEGER_CONVERSION_BADNESS;
3555 else if (TYPE_UNSIGNED (parm))
3557 if (TYPE_UNSIGNED (arg))
3558 return EXACT_MATCH_BADNESS;
3560 return INTEGER_PROMOTION_BADNESS;
3562 else if (!TYPE_NOSIGN (arg) && !TYPE_UNSIGNED (arg))
3563 return EXACT_MATCH_BADNESS;
3565 return INTEGER_CONVERSION_BADNESS;
3567 return INCOMPATIBLE_TYPE_BADNESS;
3570 case TYPE_CODE_RANGE:
3571 switch (TYPE_CODE (arg))
3574 case TYPE_CODE_CHAR:
3575 case TYPE_CODE_RANGE:
3576 case TYPE_CODE_BOOL:
3577 case TYPE_CODE_ENUM:
3578 return INTEGER_CONVERSION_BADNESS;
3580 return INT_FLOAT_CONVERSION_BADNESS;
3582 return INCOMPATIBLE_TYPE_BADNESS;
3585 case TYPE_CODE_BOOL:
3586 switch (TYPE_CODE (arg))
3588 /* n3290 draft, section 4.12.1 (conv.bool):
3590 "A prvalue of arithmetic, unscoped enumeration, pointer, or
3591 pointer to member type can be converted to a prvalue of type
3592 bool. A zero value, null pointer value, or null member pointer
3593 value is converted to false; any other value is converted to
3594 true. A prvalue of type std::nullptr_t can be converted to a
3595 prvalue of type bool; the resulting value is false." */
3597 case TYPE_CODE_CHAR:
3598 case TYPE_CODE_ENUM:
3600 case TYPE_CODE_MEMBERPTR:
3602 return BOOL_CONVERSION_BADNESS;
3603 case TYPE_CODE_RANGE:
3604 return INCOMPATIBLE_TYPE_BADNESS;
3605 case TYPE_CODE_BOOL:
3606 return EXACT_MATCH_BADNESS;
3608 return INCOMPATIBLE_TYPE_BADNESS;
3612 switch (TYPE_CODE (arg))
3615 if (TYPE_LENGTH (arg) < TYPE_LENGTH (parm))
3616 return FLOAT_PROMOTION_BADNESS;
3617 else if (TYPE_LENGTH (arg) == TYPE_LENGTH (parm))
3618 return EXACT_MATCH_BADNESS;
3620 return FLOAT_CONVERSION_BADNESS;
3622 case TYPE_CODE_BOOL:
3623 case TYPE_CODE_ENUM:
3624 case TYPE_CODE_RANGE:
3625 case TYPE_CODE_CHAR:
3626 return INT_FLOAT_CONVERSION_BADNESS;
3628 return INCOMPATIBLE_TYPE_BADNESS;
3631 case TYPE_CODE_COMPLEX:
3632 switch (TYPE_CODE (arg))
3633 { /* Strictly not needed for C++, but... */
3635 return FLOAT_PROMOTION_BADNESS;
3636 case TYPE_CODE_COMPLEX:
3637 return EXACT_MATCH_BADNESS;
3639 return INCOMPATIBLE_TYPE_BADNESS;
3642 case TYPE_CODE_STRUCT:
3643 switch (TYPE_CODE (arg))
3645 case TYPE_CODE_STRUCT:
3646 /* Check for derivation */
3647 rank.subrank = distance_to_ancestor (parm, arg, 0);
3648 if (rank.subrank >= 0)
3649 return sum_ranks (BASE_CONVERSION_BADNESS, rank);
3650 /* else fall through */
3652 return INCOMPATIBLE_TYPE_BADNESS;
3655 case TYPE_CODE_UNION:
3656 switch (TYPE_CODE (arg))
3658 case TYPE_CODE_UNION:
3660 return INCOMPATIBLE_TYPE_BADNESS;
3663 case TYPE_CODE_MEMBERPTR:
3664 switch (TYPE_CODE (arg))
3667 return INCOMPATIBLE_TYPE_BADNESS;
3670 case TYPE_CODE_METHOD:
3671 switch (TYPE_CODE (arg))
3675 return INCOMPATIBLE_TYPE_BADNESS;
3679 switch (TYPE_CODE (arg))
3683 return INCOMPATIBLE_TYPE_BADNESS;
3688 switch (TYPE_CODE (arg))
3692 return rank_one_type (TYPE_FIELD_TYPE (parm, 0),
3693 TYPE_FIELD_TYPE (arg, 0), NULL);
3695 return INCOMPATIBLE_TYPE_BADNESS;
3698 case TYPE_CODE_VOID:
3700 return INCOMPATIBLE_TYPE_BADNESS;
3701 } /* switch (TYPE_CODE (arg)) */
3704 /* End of functions for overload resolution. */
3706 /* Routines to pretty-print types. */
3709 print_bit_vector (B_TYPE *bits, int nbits)
3713 for (bitno = 0; bitno < nbits; bitno++)
3715 if ((bitno % 8) == 0)
3717 puts_filtered (" ");
3719 if (B_TST (bits, bitno))
3720 printf_filtered (("1"));
3722 printf_filtered (("0"));
3726 /* Note the first arg should be the "this" pointer, we may not want to
3727 include it since we may get into a infinitely recursive
3731 print_args (struct field *args, int nargs, int spaces)
3737 for (i = 0; i < nargs; i++)
3739 printfi_filtered (spaces, "[%d] name '%s'\n", i,
3740 args[i].name != NULL ? args[i].name : "<NULL>");
3741 recursive_dump_type (args[i].type, spaces + 2);
3747 field_is_static (struct field *f)
3749 /* "static" fields are the fields whose location is not relative
3750 to the address of the enclosing struct. It would be nice to
3751 have a dedicated flag that would be set for static fields when
3752 the type is being created. But in practice, checking the field
3753 loc_kind should give us an accurate answer. */
3754 return (FIELD_LOC_KIND (*f) == FIELD_LOC_KIND_PHYSNAME
3755 || FIELD_LOC_KIND (*f) == FIELD_LOC_KIND_PHYSADDR);
3759 dump_fn_fieldlists (struct type *type, int spaces)
3765 printfi_filtered (spaces, "fn_fieldlists ");
3766 gdb_print_host_address (TYPE_FN_FIELDLISTS (type), gdb_stdout);
3767 printf_filtered ("\n");
3768 for (method_idx = 0; method_idx < TYPE_NFN_FIELDS (type); method_idx++)
3770 f = TYPE_FN_FIELDLIST1 (type, method_idx);
3771 printfi_filtered (spaces + 2, "[%d] name '%s' (",
3773 TYPE_FN_FIELDLIST_NAME (type, method_idx));
3774 gdb_print_host_address (TYPE_FN_FIELDLIST_NAME (type, method_idx),
3776 printf_filtered (_(") length %d\n"),
3777 TYPE_FN_FIELDLIST_LENGTH (type, method_idx));
3778 for (overload_idx = 0;
3779 overload_idx < TYPE_FN_FIELDLIST_LENGTH (type, method_idx);
3782 printfi_filtered (spaces + 4, "[%d] physname '%s' (",
3784 TYPE_FN_FIELD_PHYSNAME (f, overload_idx));
3785 gdb_print_host_address (TYPE_FN_FIELD_PHYSNAME (f, overload_idx),
3787 printf_filtered (")\n");
3788 printfi_filtered (spaces + 8, "type ");
3789 gdb_print_host_address (TYPE_FN_FIELD_TYPE (f, overload_idx),
3791 printf_filtered ("\n");
3793 recursive_dump_type (TYPE_FN_FIELD_TYPE (f, overload_idx),
3796 printfi_filtered (spaces + 8, "args ");
3797 gdb_print_host_address (TYPE_FN_FIELD_ARGS (f, overload_idx),
3799 printf_filtered ("\n");
3800 print_args (TYPE_FN_FIELD_ARGS (f, overload_idx),
3801 TYPE_NFIELDS (TYPE_FN_FIELD_TYPE (f, overload_idx)),
3803 printfi_filtered (spaces + 8, "fcontext ");
3804 gdb_print_host_address (TYPE_FN_FIELD_FCONTEXT (f, overload_idx),
3806 printf_filtered ("\n");
3808 printfi_filtered (spaces + 8, "is_const %d\n",
3809 TYPE_FN_FIELD_CONST (f, overload_idx));
3810 printfi_filtered (spaces + 8, "is_volatile %d\n",
3811 TYPE_FN_FIELD_VOLATILE (f, overload_idx));
3812 printfi_filtered (spaces + 8, "is_private %d\n",
3813 TYPE_FN_FIELD_PRIVATE (f, overload_idx));
3814 printfi_filtered (spaces + 8, "is_protected %d\n",
3815 TYPE_FN_FIELD_PROTECTED (f, overload_idx));
3816 printfi_filtered (spaces + 8, "is_stub %d\n",
3817 TYPE_FN_FIELD_STUB (f, overload_idx));
3818 printfi_filtered (spaces + 8, "voffset %u\n",
3819 TYPE_FN_FIELD_VOFFSET (f, overload_idx));
3825 print_cplus_stuff (struct type *type, int spaces)
3827 printfi_filtered (spaces, "vptr_fieldno %d\n", TYPE_VPTR_FIELDNO (type));
3828 printfi_filtered (spaces, "vptr_basetype ");
3829 gdb_print_host_address (TYPE_VPTR_BASETYPE (type), gdb_stdout);
3830 puts_filtered ("\n");
3831 if (TYPE_VPTR_BASETYPE (type) != NULL)
3832 recursive_dump_type (TYPE_VPTR_BASETYPE (type), spaces + 2);
3834 printfi_filtered (spaces, "n_baseclasses %d\n",
3835 TYPE_N_BASECLASSES (type));
3836 printfi_filtered (spaces, "nfn_fields %d\n",
3837 TYPE_NFN_FIELDS (type));
3838 if (TYPE_N_BASECLASSES (type) > 0)
3840 printfi_filtered (spaces, "virtual_field_bits (%d bits at *",
3841 TYPE_N_BASECLASSES (type));
3842 gdb_print_host_address (TYPE_FIELD_VIRTUAL_BITS (type),
3844 printf_filtered (")");
3846 print_bit_vector (TYPE_FIELD_VIRTUAL_BITS (type),
3847 TYPE_N_BASECLASSES (type));
3848 puts_filtered ("\n");
3850 if (TYPE_NFIELDS (type) > 0)
3852 if (TYPE_FIELD_PRIVATE_BITS (type) != NULL)
3854 printfi_filtered (spaces,
3855 "private_field_bits (%d bits at *",
3856 TYPE_NFIELDS (type));
3857 gdb_print_host_address (TYPE_FIELD_PRIVATE_BITS (type),
3859 printf_filtered (")");
3860 print_bit_vector (TYPE_FIELD_PRIVATE_BITS (type),
3861 TYPE_NFIELDS (type));
3862 puts_filtered ("\n");
3864 if (TYPE_FIELD_PROTECTED_BITS (type) != NULL)
3866 printfi_filtered (spaces,
3867 "protected_field_bits (%d bits at *",
3868 TYPE_NFIELDS (type));
3869 gdb_print_host_address (TYPE_FIELD_PROTECTED_BITS (type),
3871 printf_filtered (")");
3872 print_bit_vector (TYPE_FIELD_PROTECTED_BITS (type),
3873 TYPE_NFIELDS (type));
3874 puts_filtered ("\n");
3877 if (TYPE_NFN_FIELDS (type) > 0)
3879 dump_fn_fieldlists (type, spaces);
3883 /* Print the contents of the TYPE's type_specific union, assuming that
3884 its type-specific kind is TYPE_SPECIFIC_GNAT_STUFF. */
3887 print_gnat_stuff (struct type *type, int spaces)
3889 struct type *descriptive_type = TYPE_DESCRIPTIVE_TYPE (type);
3891 if (descriptive_type == NULL)
3892 printfi_filtered (spaces + 2, "no descriptive type\n");
3895 printfi_filtered (spaces + 2, "descriptive type\n");
3896 recursive_dump_type (descriptive_type, spaces + 4);
3900 static struct obstack dont_print_type_obstack;
3903 recursive_dump_type (struct type *type, int spaces)
3908 obstack_begin (&dont_print_type_obstack, 0);
3910 if (TYPE_NFIELDS (type) > 0
3911 || (HAVE_CPLUS_STRUCT (type) && TYPE_NFN_FIELDS (type) > 0))
3913 struct type **first_dont_print
3914 = (struct type **) obstack_base (&dont_print_type_obstack);
3916 int i = (struct type **)
3917 obstack_next_free (&dont_print_type_obstack) - first_dont_print;
3921 if (type == first_dont_print[i])
3923 printfi_filtered (spaces, "type node ");
3924 gdb_print_host_address (type, gdb_stdout);
3925 printf_filtered (_(" <same as already seen type>\n"));
3930 obstack_ptr_grow (&dont_print_type_obstack, type);
3933 printfi_filtered (spaces, "type node ");
3934 gdb_print_host_address (type, gdb_stdout);
3935 printf_filtered ("\n");
3936 printfi_filtered (spaces, "name '%s' (",
3937 TYPE_NAME (type) ? TYPE_NAME (type) : "<NULL>");
3938 gdb_print_host_address (TYPE_NAME (type), gdb_stdout);
3939 printf_filtered (")\n");
3940 printfi_filtered (spaces, "tagname '%s' (",
3941 TYPE_TAG_NAME (type) ? TYPE_TAG_NAME (type) : "<NULL>");
3942 gdb_print_host_address (TYPE_TAG_NAME (type), gdb_stdout);
3943 printf_filtered (")\n");
3944 printfi_filtered (spaces, "code 0x%x ", TYPE_CODE (type));
3945 switch (TYPE_CODE (type))
3947 case TYPE_CODE_UNDEF:
3948 printf_filtered ("(TYPE_CODE_UNDEF)");
3951 printf_filtered ("(TYPE_CODE_PTR)");
3953 case TYPE_CODE_ARRAY:
3954 printf_filtered ("(TYPE_CODE_ARRAY)");
3956 case TYPE_CODE_STRUCT:
3957 printf_filtered ("(TYPE_CODE_STRUCT)");
3959 case TYPE_CODE_UNION:
3960 printf_filtered ("(TYPE_CODE_UNION)");
3962 case TYPE_CODE_ENUM:
3963 printf_filtered ("(TYPE_CODE_ENUM)");
3965 case TYPE_CODE_FLAGS:
3966 printf_filtered ("(TYPE_CODE_FLAGS)");
3968 case TYPE_CODE_FUNC:
3969 printf_filtered ("(TYPE_CODE_FUNC)");
3972 printf_filtered ("(TYPE_CODE_INT)");
3975 printf_filtered ("(TYPE_CODE_FLT)");
3977 case TYPE_CODE_VOID:
3978 printf_filtered ("(TYPE_CODE_VOID)");
3981 printf_filtered ("(TYPE_CODE_SET)");
3983 case TYPE_CODE_RANGE:
3984 printf_filtered ("(TYPE_CODE_RANGE)");
3986 case TYPE_CODE_STRING:
3987 printf_filtered ("(TYPE_CODE_STRING)");
3989 case TYPE_CODE_ERROR:
3990 printf_filtered ("(TYPE_CODE_ERROR)");
3992 case TYPE_CODE_MEMBERPTR:
3993 printf_filtered ("(TYPE_CODE_MEMBERPTR)");
3995 case TYPE_CODE_METHODPTR:
3996 printf_filtered ("(TYPE_CODE_METHODPTR)");
3998 case TYPE_CODE_METHOD:
3999 printf_filtered ("(TYPE_CODE_METHOD)");
4002 printf_filtered ("(TYPE_CODE_REF)");
4004 case TYPE_CODE_CHAR:
4005 printf_filtered ("(TYPE_CODE_CHAR)");
4007 case TYPE_CODE_BOOL:
4008 printf_filtered ("(TYPE_CODE_BOOL)");
4010 case TYPE_CODE_COMPLEX:
4011 printf_filtered ("(TYPE_CODE_COMPLEX)");
4013 case TYPE_CODE_TYPEDEF:
4014 printf_filtered ("(TYPE_CODE_TYPEDEF)");
4016 case TYPE_CODE_NAMESPACE:
4017 printf_filtered ("(TYPE_CODE_NAMESPACE)");
4020 printf_filtered ("(UNKNOWN TYPE CODE)");
4023 puts_filtered ("\n");
4024 printfi_filtered (spaces, "length %d\n", TYPE_LENGTH (type));
4025 if (TYPE_OBJFILE_OWNED (type))
4027 printfi_filtered (spaces, "objfile ");
4028 gdb_print_host_address (TYPE_OWNER (type).objfile, gdb_stdout);
4032 printfi_filtered (spaces, "gdbarch ");
4033 gdb_print_host_address (TYPE_OWNER (type).gdbarch, gdb_stdout);
4035 printf_filtered ("\n");
4036 printfi_filtered (spaces, "target_type ");
4037 gdb_print_host_address (TYPE_TARGET_TYPE (type), gdb_stdout);
4038 printf_filtered ("\n");
4039 if (TYPE_TARGET_TYPE (type) != NULL)
4041 recursive_dump_type (TYPE_TARGET_TYPE (type), spaces + 2);
4043 printfi_filtered (spaces, "pointer_type ");
4044 gdb_print_host_address (TYPE_POINTER_TYPE (type), gdb_stdout);
4045 printf_filtered ("\n");
4046 printfi_filtered (spaces, "reference_type ");
4047 gdb_print_host_address (TYPE_REFERENCE_TYPE (type), gdb_stdout);
4048 printf_filtered ("\n");
4049 printfi_filtered (spaces, "type_chain ");
4050 gdb_print_host_address (TYPE_CHAIN (type), gdb_stdout);
4051 printf_filtered ("\n");
4052 printfi_filtered (spaces, "instance_flags 0x%x",
4053 TYPE_INSTANCE_FLAGS (type));
4054 if (TYPE_CONST (type))
4056 puts_filtered (" TYPE_FLAG_CONST");
4058 if (TYPE_VOLATILE (type))
4060 puts_filtered (" TYPE_FLAG_VOLATILE");
4062 if (TYPE_CODE_SPACE (type))
4064 puts_filtered (" TYPE_FLAG_CODE_SPACE");
4066 if (TYPE_DATA_SPACE (type))
4068 puts_filtered (" TYPE_FLAG_DATA_SPACE");
4070 if (TYPE_ADDRESS_CLASS_1 (type))
4072 puts_filtered (" TYPE_FLAG_ADDRESS_CLASS_1");
4074 if (TYPE_ADDRESS_CLASS_2 (type))
4076 puts_filtered (" TYPE_FLAG_ADDRESS_CLASS_2");
4078 if (TYPE_RESTRICT (type))
4080 puts_filtered (" TYPE_FLAG_RESTRICT");
4082 if (TYPE_ATOMIC (type))
4084 puts_filtered (" TYPE_FLAG_ATOMIC");
4086 puts_filtered ("\n");
4088 printfi_filtered (spaces, "flags");
4089 if (TYPE_UNSIGNED (type))
4091 puts_filtered (" TYPE_FLAG_UNSIGNED");
4093 if (TYPE_NOSIGN (type))
4095 puts_filtered (" TYPE_FLAG_NOSIGN");
4097 if (TYPE_STUB (type))
4099 puts_filtered (" TYPE_FLAG_STUB");
4101 if (TYPE_TARGET_STUB (type))
4103 puts_filtered (" TYPE_FLAG_TARGET_STUB");
4105 if (TYPE_STATIC (type))
4107 puts_filtered (" TYPE_FLAG_STATIC");
4109 if (TYPE_PROTOTYPED (type))
4111 puts_filtered (" TYPE_FLAG_PROTOTYPED");
4113 if (TYPE_INCOMPLETE (type))
4115 puts_filtered (" TYPE_FLAG_INCOMPLETE");
4117 if (TYPE_VARARGS (type))
4119 puts_filtered (" TYPE_FLAG_VARARGS");
4121 /* This is used for things like AltiVec registers on ppc. Gcc emits
4122 an attribute for the array type, which tells whether or not we
4123 have a vector, instead of a regular array. */
4124 if (TYPE_VECTOR (type))
4126 puts_filtered (" TYPE_FLAG_VECTOR");
4128 if (TYPE_FIXED_INSTANCE (type))
4130 puts_filtered (" TYPE_FIXED_INSTANCE");
4132 if (TYPE_STUB_SUPPORTED (type))
4134 puts_filtered (" TYPE_STUB_SUPPORTED");
4136 if (TYPE_NOTTEXT (type))
4138 puts_filtered (" TYPE_NOTTEXT");
4140 puts_filtered ("\n");
4141 printfi_filtered (spaces, "nfields %d ", TYPE_NFIELDS (type));
4142 gdb_print_host_address (TYPE_FIELDS (type), gdb_stdout);
4143 puts_filtered ("\n");
4144 for (idx = 0; idx < TYPE_NFIELDS (type); idx++)
4146 if (TYPE_CODE (type) == TYPE_CODE_ENUM)
4147 printfi_filtered (spaces + 2,
4148 "[%d] enumval %s type ",
4149 idx, plongest (TYPE_FIELD_ENUMVAL (type, idx)));
4151 printfi_filtered (spaces + 2,
4152 "[%d] bitpos %d bitsize %d type ",
4153 idx, TYPE_FIELD_BITPOS (type, idx),
4154 TYPE_FIELD_BITSIZE (type, idx));
4155 gdb_print_host_address (TYPE_FIELD_TYPE (type, idx), gdb_stdout);
4156 printf_filtered (" name '%s' (",
4157 TYPE_FIELD_NAME (type, idx) != NULL
4158 ? TYPE_FIELD_NAME (type, idx)
4160 gdb_print_host_address (TYPE_FIELD_NAME (type, idx), gdb_stdout);
4161 printf_filtered (")\n");
4162 if (TYPE_FIELD_TYPE (type, idx) != NULL)
4164 recursive_dump_type (TYPE_FIELD_TYPE (type, idx), spaces + 4);
4167 if (TYPE_CODE (type) == TYPE_CODE_RANGE)
4169 printfi_filtered (spaces, "low %s%s high %s%s\n",
4170 plongest (TYPE_LOW_BOUND (type)),
4171 TYPE_LOW_BOUND_UNDEFINED (type) ? " (undefined)" : "",
4172 plongest (TYPE_HIGH_BOUND (type)),
4173 TYPE_HIGH_BOUND_UNDEFINED (type)
4174 ? " (undefined)" : "");
4177 switch (TYPE_SPECIFIC_FIELD (type))
4179 case TYPE_SPECIFIC_CPLUS_STUFF:
4180 printfi_filtered (spaces, "cplus_stuff ");
4181 gdb_print_host_address (TYPE_CPLUS_SPECIFIC (type),
4183 puts_filtered ("\n");
4184 print_cplus_stuff (type, spaces);
4187 case TYPE_SPECIFIC_GNAT_STUFF:
4188 printfi_filtered (spaces, "gnat_stuff ");
4189 gdb_print_host_address (TYPE_GNAT_SPECIFIC (type), gdb_stdout);
4190 puts_filtered ("\n");
4191 print_gnat_stuff (type, spaces);
4194 case TYPE_SPECIFIC_FLOATFORMAT:
4195 printfi_filtered (spaces, "floatformat ");
4196 if (TYPE_FLOATFORMAT (type) == NULL)
4197 puts_filtered ("(null)");
4200 puts_filtered ("{ ");
4201 if (TYPE_FLOATFORMAT (type)[0] == NULL
4202 || TYPE_FLOATFORMAT (type)[0]->name == NULL)
4203 puts_filtered ("(null)");
4205 puts_filtered (TYPE_FLOATFORMAT (type)[0]->name);
4207 puts_filtered (", ");
4208 if (TYPE_FLOATFORMAT (type)[1] == NULL
4209 || TYPE_FLOATFORMAT (type)[1]->name == NULL)
4210 puts_filtered ("(null)");
4212 puts_filtered (TYPE_FLOATFORMAT (type)[1]->name);
4214 puts_filtered (" }");
4216 puts_filtered ("\n");
4219 case TYPE_SPECIFIC_FUNC:
4220 printfi_filtered (spaces, "calling_convention %d\n",
4221 TYPE_CALLING_CONVENTION (type));
4222 /* tail_call_list is not printed. */
4225 case TYPE_SPECIFIC_SELF_TYPE:
4226 printfi_filtered (spaces, "self_type ");
4227 gdb_print_host_address (TYPE_SELF_TYPE (type), gdb_stdout);
4228 puts_filtered ("\n");
4233 obstack_free (&dont_print_type_obstack, NULL);
4236 /* Trivial helpers for the libiberty hash table, for mapping one
4241 struct type *old, *newobj;
4245 type_pair_hash (const void *item)
4247 const struct type_pair *pair = item;
4249 return htab_hash_pointer (pair->old);
4253 type_pair_eq (const void *item_lhs, const void *item_rhs)
4255 const struct type_pair *lhs = item_lhs, *rhs = item_rhs;
4257 return lhs->old == rhs->old;
4260 /* Allocate the hash table used by copy_type_recursive to walk
4261 types without duplicates. We use OBJFILE's obstack, because
4262 OBJFILE is about to be deleted. */
4265 create_copied_types_hash (struct objfile *objfile)
4267 return htab_create_alloc_ex (1, type_pair_hash, type_pair_eq,
4268 NULL, &objfile->objfile_obstack,
4269 hashtab_obstack_allocate,
4270 dummy_obstack_deallocate);
4273 /* Recursively copy (deep copy) a dynamic attribute list of a type. */
4275 static struct dynamic_prop_list *
4276 copy_dynamic_prop_list (struct obstack *objfile_obstack,
4277 struct dynamic_prop_list *list)
4279 struct dynamic_prop_list *copy = list;
4280 struct dynamic_prop_list **node_ptr = ©
4282 while (*node_ptr != NULL)
4284 struct dynamic_prop_list *node_copy;
4286 node_copy = obstack_copy (objfile_obstack, *node_ptr,
4287 sizeof (struct dynamic_prop_list));
4288 node_copy->prop = (*node_ptr)->prop;
4289 *node_ptr = node_copy;
4291 node_ptr = &node_copy->next;
4297 /* Recursively copy (deep copy) TYPE, if it is associated with
4298 OBJFILE. Return a new type allocated using malloc, a saved type if
4299 we have already visited TYPE (using COPIED_TYPES), or TYPE if it is
4300 not associated with OBJFILE. */
4303 copy_type_recursive (struct objfile *objfile,
4305 htab_t copied_types)
4307 struct type_pair *stored, pair;
4309 struct type *new_type;
4311 if (! TYPE_OBJFILE_OWNED (type))
4314 /* This type shouldn't be pointing to any types in other objfiles;
4315 if it did, the type might disappear unexpectedly. */
4316 gdb_assert (TYPE_OBJFILE (type) == objfile);
4319 slot = htab_find_slot (copied_types, &pair, INSERT);
4321 return ((struct type_pair *) *slot)->newobj;
4323 new_type = alloc_type_arch (get_type_arch (type));
4325 /* We must add the new type to the hash table immediately, in case
4326 we encounter this type again during a recursive call below. */
4328 = obstack_alloc (&objfile->objfile_obstack, sizeof (struct type_pair));
4330 stored->newobj = new_type;
4333 /* Copy the common fields of types. For the main type, we simply
4334 copy the entire thing and then update specific fields as needed. */
4335 *TYPE_MAIN_TYPE (new_type) = *TYPE_MAIN_TYPE (type);
4336 TYPE_OBJFILE_OWNED (new_type) = 0;
4337 TYPE_OWNER (new_type).gdbarch = get_type_arch (type);
4339 if (TYPE_NAME (type))
4340 TYPE_NAME (new_type) = xstrdup (TYPE_NAME (type));
4341 if (TYPE_TAG_NAME (type))
4342 TYPE_TAG_NAME (new_type) = xstrdup (TYPE_TAG_NAME (type));
4344 TYPE_INSTANCE_FLAGS (new_type) = TYPE_INSTANCE_FLAGS (type);
4345 TYPE_LENGTH (new_type) = TYPE_LENGTH (type);
4347 /* Copy the fields. */
4348 if (TYPE_NFIELDS (type))
4352 nfields = TYPE_NFIELDS (type);
4353 TYPE_FIELDS (new_type) = XCNEWVEC (struct field, nfields);
4354 for (i = 0; i < nfields; i++)
4356 TYPE_FIELD_ARTIFICIAL (new_type, i) =
4357 TYPE_FIELD_ARTIFICIAL (type, i);
4358 TYPE_FIELD_BITSIZE (new_type, i) = TYPE_FIELD_BITSIZE (type, i);
4359 if (TYPE_FIELD_TYPE (type, i))
4360 TYPE_FIELD_TYPE (new_type, i)
4361 = copy_type_recursive (objfile, TYPE_FIELD_TYPE (type, i),
4363 if (TYPE_FIELD_NAME (type, i))
4364 TYPE_FIELD_NAME (new_type, i) =
4365 xstrdup (TYPE_FIELD_NAME (type, i));
4366 switch (TYPE_FIELD_LOC_KIND (type, i))
4368 case FIELD_LOC_KIND_BITPOS:
4369 SET_FIELD_BITPOS (TYPE_FIELD (new_type, i),
4370 TYPE_FIELD_BITPOS (type, i));
4372 case FIELD_LOC_KIND_ENUMVAL:
4373 SET_FIELD_ENUMVAL (TYPE_FIELD (new_type, i),
4374 TYPE_FIELD_ENUMVAL (type, i));
4376 case FIELD_LOC_KIND_PHYSADDR:
4377 SET_FIELD_PHYSADDR (TYPE_FIELD (new_type, i),
4378 TYPE_FIELD_STATIC_PHYSADDR (type, i));
4380 case FIELD_LOC_KIND_PHYSNAME:
4381 SET_FIELD_PHYSNAME (TYPE_FIELD (new_type, i),
4382 xstrdup (TYPE_FIELD_STATIC_PHYSNAME (type,
4386 internal_error (__FILE__, __LINE__,
4387 _("Unexpected type field location kind: %d"),
4388 TYPE_FIELD_LOC_KIND (type, i));
4393 /* For range types, copy the bounds information. */
4394 if (TYPE_CODE (type) == TYPE_CODE_RANGE)
4396 TYPE_RANGE_DATA (new_type) = xmalloc (sizeof (struct range_bounds));
4397 *TYPE_RANGE_DATA (new_type) = *TYPE_RANGE_DATA (type);
4400 if (TYPE_DYN_PROP_LIST (type) != NULL)
4401 TYPE_DYN_PROP_LIST (new_type)
4402 = copy_dynamic_prop_list (&objfile->objfile_obstack,
4403 TYPE_DYN_PROP_LIST (type));
4406 /* Copy pointers to other types. */
4407 if (TYPE_TARGET_TYPE (type))
4408 TYPE_TARGET_TYPE (new_type) =
4409 copy_type_recursive (objfile,
4410 TYPE_TARGET_TYPE (type),
4413 /* Maybe copy the type_specific bits.
4415 NOTE drow/2005-12-09: We do not copy the C++-specific bits like
4416 base classes and methods. There's no fundamental reason why we
4417 can't, but at the moment it is not needed. */
4419 switch (TYPE_SPECIFIC_FIELD (type))
4421 case TYPE_SPECIFIC_NONE:
4423 case TYPE_SPECIFIC_FUNC:
4424 INIT_FUNC_SPECIFIC (new_type);
4425 TYPE_CALLING_CONVENTION (new_type) = TYPE_CALLING_CONVENTION (type);
4426 TYPE_NO_RETURN (new_type) = TYPE_NO_RETURN (type);
4427 TYPE_TAIL_CALL_LIST (new_type) = NULL;
4429 case TYPE_SPECIFIC_FLOATFORMAT:
4430 TYPE_FLOATFORMAT (new_type) = TYPE_FLOATFORMAT (type);
4432 case TYPE_SPECIFIC_CPLUS_STUFF:
4433 INIT_CPLUS_SPECIFIC (new_type);
4435 case TYPE_SPECIFIC_GNAT_STUFF:
4436 INIT_GNAT_SPECIFIC (new_type);
4438 case TYPE_SPECIFIC_SELF_TYPE:
4439 set_type_self_type (new_type,
4440 copy_type_recursive (objfile, TYPE_SELF_TYPE (type),
4444 gdb_assert_not_reached ("bad type_specific_kind");
4450 /* Make a copy of the given TYPE, except that the pointer & reference
4451 types are not preserved.
4453 This function assumes that the given type has an associated objfile.
4454 This objfile is used to allocate the new type. */
4457 copy_type (const struct type *type)
4459 struct type *new_type;
4461 gdb_assert (TYPE_OBJFILE_OWNED (type));
4463 new_type = alloc_type_copy (type);
4464 TYPE_INSTANCE_FLAGS (new_type) = TYPE_INSTANCE_FLAGS (type);
4465 TYPE_LENGTH (new_type) = TYPE_LENGTH (type);
4466 memcpy (TYPE_MAIN_TYPE (new_type), TYPE_MAIN_TYPE (type),
4467 sizeof (struct main_type));
4468 if (TYPE_DYN_PROP_LIST (type) != NULL)
4469 TYPE_DYN_PROP_LIST (new_type)
4470 = copy_dynamic_prop_list (&TYPE_OBJFILE (type) -> objfile_obstack,
4471 TYPE_DYN_PROP_LIST (type));
4476 /* Helper functions to initialize architecture-specific types. */
4478 /* Allocate a type structure associated with GDBARCH and set its
4479 CODE, LENGTH, and NAME fields. */
4482 arch_type (struct gdbarch *gdbarch,
4483 enum type_code code, int length, char *name)
4487 type = alloc_type_arch (gdbarch);
4488 TYPE_CODE (type) = code;
4489 TYPE_LENGTH (type) = length;
4492 TYPE_NAME (type) = xstrdup (name);
4497 /* Allocate a TYPE_CODE_INT type structure associated with GDBARCH.
4498 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
4499 the type's TYPE_UNSIGNED flag. NAME is the type name. */
4502 arch_integer_type (struct gdbarch *gdbarch,
4503 int bit, int unsigned_p, char *name)
4507 t = arch_type (gdbarch, TYPE_CODE_INT, bit / TARGET_CHAR_BIT, name);
4509 TYPE_UNSIGNED (t) = 1;
4510 if (name && strcmp (name, "char") == 0)
4511 TYPE_NOSIGN (t) = 1;
4516 /* Allocate a TYPE_CODE_CHAR type structure associated with GDBARCH.
4517 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
4518 the type's TYPE_UNSIGNED flag. NAME is the type name. */
4521 arch_character_type (struct gdbarch *gdbarch,
4522 int bit, int unsigned_p, char *name)
4526 t = arch_type (gdbarch, TYPE_CODE_CHAR, bit / TARGET_CHAR_BIT, name);
4528 TYPE_UNSIGNED (t) = 1;
4533 /* Allocate a TYPE_CODE_BOOL type structure associated with GDBARCH.
4534 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
4535 the type's TYPE_UNSIGNED flag. NAME is the type name. */
4538 arch_boolean_type (struct gdbarch *gdbarch,
4539 int bit, int unsigned_p, char *name)
4543 t = arch_type (gdbarch, TYPE_CODE_BOOL, bit / TARGET_CHAR_BIT, name);
4545 TYPE_UNSIGNED (t) = 1;
4550 /* Allocate a TYPE_CODE_FLT type structure associated with GDBARCH.
4551 BIT is the type size in bits; if BIT equals -1, the size is
4552 determined by the floatformat. NAME is the type name. Set the
4553 TYPE_FLOATFORMAT from FLOATFORMATS. */
4556 arch_float_type (struct gdbarch *gdbarch,
4557 int bit, char *name, const struct floatformat **floatformats)
4563 gdb_assert (floatformats != NULL);
4564 gdb_assert (floatformats[0] != NULL && floatformats[1] != NULL);
4565 bit = floatformats[0]->totalsize;
4567 gdb_assert (bit >= 0);
4569 t = arch_type (gdbarch, TYPE_CODE_FLT, bit / TARGET_CHAR_BIT, name);
4570 TYPE_FLOATFORMAT (t) = floatformats;
4574 /* Allocate a TYPE_CODE_COMPLEX type structure associated with GDBARCH.
4575 NAME is the type name. TARGET_TYPE is the component float type. */
4578 arch_complex_type (struct gdbarch *gdbarch,
4579 char *name, struct type *target_type)
4583 t = arch_type (gdbarch, TYPE_CODE_COMPLEX,
4584 2 * TYPE_LENGTH (target_type), name);
4585 TYPE_TARGET_TYPE (t) = target_type;
4589 /* Allocate a TYPE_CODE_FLAGS type structure associated with GDBARCH.
4590 NAME is the type name. LENGTH is the size of the flag word in bytes. */
4593 arch_flags_type (struct gdbarch *gdbarch, char *name, int length)
4595 int nfields = length * TARGET_CHAR_BIT;
4598 type = arch_type (gdbarch, TYPE_CODE_FLAGS, length, name);
4599 TYPE_UNSIGNED (type) = 1;
4600 TYPE_NFIELDS (type) = nfields;
4601 TYPE_FIELDS (type) = TYPE_ZALLOC (type, nfields * sizeof (struct field));
4606 /* Add field to TYPE_CODE_FLAGS type TYPE to indicate the bit at
4607 position BITPOS is called NAME. */
4610 append_flags_type_flag (struct type *type, int bitpos, char *name)
4612 gdb_assert (TYPE_CODE (type) == TYPE_CODE_FLAGS);
4613 gdb_assert (bitpos < TYPE_NFIELDS (type));
4614 gdb_assert (bitpos >= 0);
4618 TYPE_FIELD_NAME (type, bitpos) = xstrdup (name);
4619 SET_FIELD_BITPOS (TYPE_FIELD (type, bitpos), bitpos);
4623 /* Don't show this field to the user. */
4624 SET_FIELD_BITPOS (TYPE_FIELD (type, bitpos), -1);
4628 /* Allocate a TYPE_CODE_STRUCT or TYPE_CODE_UNION type structure (as
4629 specified by CODE) associated with GDBARCH. NAME is the type name. */
4632 arch_composite_type (struct gdbarch *gdbarch, char *name, enum type_code code)
4636 gdb_assert (code == TYPE_CODE_STRUCT || code == TYPE_CODE_UNION);
4637 t = arch_type (gdbarch, code, 0, NULL);
4638 TYPE_TAG_NAME (t) = name;
4639 INIT_CPLUS_SPECIFIC (t);
4643 /* Add new field with name NAME and type FIELD to composite type T.
4644 Do not set the field's position or adjust the type's length;
4645 the caller should do so. Return the new field. */
4648 append_composite_type_field_raw (struct type *t, char *name,
4653 TYPE_NFIELDS (t) = TYPE_NFIELDS (t) + 1;
4654 TYPE_FIELDS (t) = xrealloc (TYPE_FIELDS (t),
4655 sizeof (struct field) * TYPE_NFIELDS (t));
4656 f = &(TYPE_FIELDS (t)[TYPE_NFIELDS (t) - 1]);
4657 memset (f, 0, sizeof f[0]);
4658 FIELD_TYPE (f[0]) = field;
4659 FIELD_NAME (f[0]) = name;
4663 /* Add new field with name NAME and type FIELD to composite type T.
4664 ALIGNMENT (if non-zero) specifies the minimum field alignment. */
4667 append_composite_type_field_aligned (struct type *t, char *name,
4668 struct type *field, int alignment)
4670 struct field *f = append_composite_type_field_raw (t, name, field);
4672 if (TYPE_CODE (t) == TYPE_CODE_UNION)
4674 if (TYPE_LENGTH (t) < TYPE_LENGTH (field))
4675 TYPE_LENGTH (t) = TYPE_LENGTH (field);
4677 else if (TYPE_CODE (t) == TYPE_CODE_STRUCT)
4679 TYPE_LENGTH (t) = TYPE_LENGTH (t) + TYPE_LENGTH (field);
4680 if (TYPE_NFIELDS (t) > 1)
4682 SET_FIELD_BITPOS (f[0],
4683 (FIELD_BITPOS (f[-1])
4684 + (TYPE_LENGTH (FIELD_TYPE (f[-1]))
4685 * TARGET_CHAR_BIT)));
4691 alignment *= TARGET_CHAR_BIT;
4692 left = FIELD_BITPOS (f[0]) % alignment;
4696 SET_FIELD_BITPOS (f[0], FIELD_BITPOS (f[0]) + (alignment - left));
4697 TYPE_LENGTH (t) += (alignment - left) / TARGET_CHAR_BIT;
4704 /* Add new field with name NAME and type FIELD to composite type T. */
4707 append_composite_type_field (struct type *t, char *name,
4710 append_composite_type_field_aligned (t, name, field, 0);
4713 static struct gdbarch_data *gdbtypes_data;
4715 const struct builtin_type *
4716 builtin_type (struct gdbarch *gdbarch)
4718 return gdbarch_data (gdbarch, gdbtypes_data);
4722 gdbtypes_post_init (struct gdbarch *gdbarch)
4724 struct builtin_type *builtin_type
4725 = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct builtin_type);
4728 builtin_type->builtin_void
4729 = arch_type (gdbarch, TYPE_CODE_VOID, 1, "void");
4730 builtin_type->builtin_char
4731 = arch_integer_type (gdbarch, TARGET_CHAR_BIT,
4732 !gdbarch_char_signed (gdbarch), "char");
4733 builtin_type->builtin_signed_char
4734 = arch_integer_type (gdbarch, TARGET_CHAR_BIT,
4736 builtin_type->builtin_unsigned_char
4737 = arch_integer_type (gdbarch, TARGET_CHAR_BIT,
4738 1, "unsigned char");
4739 builtin_type->builtin_short
4740 = arch_integer_type (gdbarch, gdbarch_short_bit (gdbarch),
4742 builtin_type->builtin_unsigned_short
4743 = arch_integer_type (gdbarch, gdbarch_short_bit (gdbarch),
4744 1, "unsigned short");
4745 builtin_type->builtin_int
4746 = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch),
4748 builtin_type->builtin_unsigned_int
4749 = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch),
4751 builtin_type->builtin_long
4752 = arch_integer_type (gdbarch, gdbarch_long_bit (gdbarch),
4754 builtin_type->builtin_unsigned_long
4755 = arch_integer_type (gdbarch, gdbarch_long_bit (gdbarch),
4756 1, "unsigned long");
4757 builtin_type->builtin_long_long
4758 = arch_integer_type (gdbarch, gdbarch_long_long_bit (gdbarch),
4760 builtin_type->builtin_unsigned_long_long
4761 = arch_integer_type (gdbarch, gdbarch_long_long_bit (gdbarch),
4762 1, "unsigned long long");
4763 builtin_type->builtin_float
4764 = arch_float_type (gdbarch, gdbarch_float_bit (gdbarch),
4765 "float", gdbarch_float_format (gdbarch));
4766 builtin_type->builtin_double
4767 = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch),
4768 "double", gdbarch_double_format (gdbarch));
4769 builtin_type->builtin_long_double
4770 = arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch),
4771 "long double", gdbarch_long_double_format (gdbarch));
4772 builtin_type->builtin_complex
4773 = arch_complex_type (gdbarch, "complex",
4774 builtin_type->builtin_float);
4775 builtin_type->builtin_double_complex
4776 = arch_complex_type (gdbarch, "double complex",
4777 builtin_type->builtin_double);
4778 builtin_type->builtin_string
4779 = arch_type (gdbarch, TYPE_CODE_STRING, 1, "string");
4780 builtin_type->builtin_bool
4781 = arch_type (gdbarch, TYPE_CODE_BOOL, 1, "bool");
4783 /* The following three are about decimal floating point types, which
4784 are 32-bits, 64-bits and 128-bits respectively. */
4785 builtin_type->builtin_decfloat
4786 = arch_type (gdbarch, TYPE_CODE_DECFLOAT, 32 / 8, "_Decimal32");
4787 builtin_type->builtin_decdouble
4788 = arch_type (gdbarch, TYPE_CODE_DECFLOAT, 64 / 8, "_Decimal64");
4789 builtin_type->builtin_declong
4790 = arch_type (gdbarch, TYPE_CODE_DECFLOAT, 128 / 8, "_Decimal128");
4792 /* "True" character types. */
4793 builtin_type->builtin_true_char
4794 = arch_character_type (gdbarch, TARGET_CHAR_BIT, 0, "true character");
4795 builtin_type->builtin_true_unsigned_char
4796 = arch_character_type (gdbarch, TARGET_CHAR_BIT, 1, "true character");
4798 /* Fixed-size integer types. */
4799 builtin_type->builtin_int0
4800 = arch_integer_type (gdbarch, 0, 0, "int0_t");
4801 builtin_type->builtin_int8
4802 = arch_integer_type (gdbarch, 8, 0, "int8_t");
4803 builtin_type->builtin_uint8
4804 = arch_integer_type (gdbarch, 8, 1, "uint8_t");
4805 builtin_type->builtin_int16
4806 = arch_integer_type (gdbarch, 16, 0, "int16_t");
4807 builtin_type->builtin_uint16
4808 = arch_integer_type (gdbarch, 16, 1, "uint16_t");
4809 builtin_type->builtin_int32
4810 = arch_integer_type (gdbarch, 32, 0, "int32_t");
4811 builtin_type->builtin_uint32
4812 = arch_integer_type (gdbarch, 32, 1, "uint32_t");
4813 builtin_type->builtin_int64
4814 = arch_integer_type (gdbarch, 64, 0, "int64_t");
4815 builtin_type->builtin_uint64
4816 = arch_integer_type (gdbarch, 64, 1, "uint64_t");
4817 builtin_type->builtin_int128
4818 = arch_integer_type (gdbarch, 128, 0, "int128_t");
4819 builtin_type->builtin_uint128
4820 = arch_integer_type (gdbarch, 128, 1, "uint128_t");
4821 TYPE_INSTANCE_FLAGS (builtin_type->builtin_int8) |=
4822 TYPE_INSTANCE_FLAG_NOTTEXT;
4823 TYPE_INSTANCE_FLAGS (builtin_type->builtin_uint8) |=
4824 TYPE_INSTANCE_FLAG_NOTTEXT;
4826 /* Wide character types. */
4827 builtin_type->builtin_char16
4828 = arch_integer_type (gdbarch, 16, 0, "char16_t");
4829 builtin_type->builtin_char32
4830 = arch_integer_type (gdbarch, 32, 0, "char32_t");
4833 /* Default data/code pointer types. */
4834 builtin_type->builtin_data_ptr
4835 = lookup_pointer_type (builtin_type->builtin_void);
4836 builtin_type->builtin_func_ptr
4837 = lookup_pointer_type (lookup_function_type (builtin_type->builtin_void));
4838 builtin_type->builtin_func_func
4839 = lookup_function_type (builtin_type->builtin_func_ptr);
4841 /* This type represents a GDB internal function. */
4842 builtin_type->internal_fn
4843 = arch_type (gdbarch, TYPE_CODE_INTERNAL_FUNCTION, 0,
4844 "<internal function>");
4846 /* This type represents an xmethod. */
4847 builtin_type->xmethod
4848 = arch_type (gdbarch, TYPE_CODE_XMETHOD, 0, "<xmethod>");
4850 return builtin_type;
4853 /* This set of objfile-based types is intended to be used by symbol
4854 readers as basic types. */
4856 static const struct objfile_data *objfile_type_data;
4858 const struct objfile_type *
4859 objfile_type (struct objfile *objfile)
4861 struct gdbarch *gdbarch;
4862 struct objfile_type *objfile_type
4863 = objfile_data (objfile, objfile_type_data);
4866 return objfile_type;
4868 objfile_type = OBSTACK_CALLOC (&objfile->objfile_obstack,
4869 1, struct objfile_type);
4871 /* Use the objfile architecture to determine basic type properties. */
4872 gdbarch = get_objfile_arch (objfile);
4875 objfile_type->builtin_void
4876 = init_type (TYPE_CODE_VOID, 1,
4880 objfile_type->builtin_char
4881 = init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
4883 | (gdbarch_char_signed (gdbarch) ? 0 : TYPE_FLAG_UNSIGNED)),
4885 objfile_type->builtin_signed_char
4886 = init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
4888 "signed char", objfile);
4889 objfile_type->builtin_unsigned_char
4890 = init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
4892 "unsigned char", objfile);
4893 objfile_type->builtin_short
4894 = init_type (TYPE_CODE_INT,
4895 gdbarch_short_bit (gdbarch) / TARGET_CHAR_BIT,
4896 0, "short", objfile);
4897 objfile_type->builtin_unsigned_short
4898 = init_type (TYPE_CODE_INT,
4899 gdbarch_short_bit (gdbarch) / TARGET_CHAR_BIT,
4900 TYPE_FLAG_UNSIGNED, "unsigned short", objfile);
4901 objfile_type->builtin_int
4902 = init_type (TYPE_CODE_INT,
4903 gdbarch_int_bit (gdbarch) / TARGET_CHAR_BIT,
4905 objfile_type->builtin_unsigned_int
4906 = init_type (TYPE_CODE_INT,
4907 gdbarch_int_bit (gdbarch) / TARGET_CHAR_BIT,
4908 TYPE_FLAG_UNSIGNED, "unsigned int", objfile);
4909 objfile_type->builtin_long
4910 = init_type (TYPE_CODE_INT,
4911 gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT,
4912 0, "long", objfile);
4913 objfile_type->builtin_unsigned_long
4914 = init_type (TYPE_CODE_INT,
4915 gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT,
4916 TYPE_FLAG_UNSIGNED, "unsigned long", objfile);
4917 objfile_type->builtin_long_long
4918 = init_type (TYPE_CODE_INT,
4919 gdbarch_long_long_bit (gdbarch) / TARGET_CHAR_BIT,
4920 0, "long long", objfile);
4921 objfile_type->builtin_unsigned_long_long
4922 = init_type (TYPE_CODE_INT,
4923 gdbarch_long_long_bit (gdbarch) / TARGET_CHAR_BIT,
4924 TYPE_FLAG_UNSIGNED, "unsigned long long", objfile);
4926 objfile_type->builtin_float
4927 = init_type (TYPE_CODE_FLT,
4928 gdbarch_float_bit (gdbarch) / TARGET_CHAR_BIT,
4929 0, "float", objfile);
4930 TYPE_FLOATFORMAT (objfile_type->builtin_float)
4931 = gdbarch_float_format (gdbarch);
4932 objfile_type->builtin_double
4933 = init_type (TYPE_CODE_FLT,
4934 gdbarch_double_bit (gdbarch) / TARGET_CHAR_BIT,
4935 0, "double", objfile);
4936 TYPE_FLOATFORMAT (objfile_type->builtin_double)
4937 = gdbarch_double_format (gdbarch);
4938 objfile_type->builtin_long_double
4939 = init_type (TYPE_CODE_FLT,
4940 gdbarch_long_double_bit (gdbarch) / TARGET_CHAR_BIT,
4941 0, "long double", objfile);
4942 TYPE_FLOATFORMAT (objfile_type->builtin_long_double)
4943 = gdbarch_long_double_format (gdbarch);
4945 /* This type represents a type that was unrecognized in symbol read-in. */
4946 objfile_type->builtin_error
4947 = init_type (TYPE_CODE_ERROR, 0, 0, "<unknown type>", objfile);
4949 /* The following set of types is used for symbols with no
4950 debug information. */
4951 objfile_type->nodebug_text_symbol
4952 = init_type (TYPE_CODE_FUNC, 1, 0,
4953 "<text variable, no debug info>", objfile);
4954 TYPE_TARGET_TYPE (objfile_type->nodebug_text_symbol)
4955 = objfile_type->builtin_int;
4956 objfile_type->nodebug_text_gnu_ifunc_symbol
4957 = init_type (TYPE_CODE_FUNC, 1, TYPE_FLAG_GNU_IFUNC,
4958 "<text gnu-indirect-function variable, no debug info>",
4960 TYPE_TARGET_TYPE (objfile_type->nodebug_text_gnu_ifunc_symbol)
4961 = objfile_type->nodebug_text_symbol;
4962 objfile_type->nodebug_got_plt_symbol
4963 = init_type (TYPE_CODE_PTR, gdbarch_addr_bit (gdbarch) / 8, 0,
4964 "<text from jump slot in .got.plt, no debug info>",
4966 TYPE_TARGET_TYPE (objfile_type->nodebug_got_plt_symbol)
4967 = objfile_type->nodebug_text_symbol;
4968 objfile_type->nodebug_data_symbol
4969 = init_type (TYPE_CODE_INT,
4970 gdbarch_int_bit (gdbarch) / HOST_CHAR_BIT, 0,
4971 "<data variable, no debug info>", objfile);
4972 objfile_type->nodebug_unknown_symbol
4973 = init_type (TYPE_CODE_INT, 1, 0,
4974 "<variable (not text or data), no debug info>", objfile);
4975 objfile_type->nodebug_tls_symbol
4976 = init_type (TYPE_CODE_INT,
4977 gdbarch_int_bit (gdbarch) / HOST_CHAR_BIT, 0,
4978 "<thread local variable, no debug info>", objfile);
4980 /* NOTE: on some targets, addresses and pointers are not necessarily
4984 - gdb's `struct type' always describes the target's
4986 - gdb's `struct value' objects should always hold values in
4988 - gdb's CORE_ADDR values are addresses in the unified virtual
4989 address space that the assembler and linker work with. Thus,
4990 since target_read_memory takes a CORE_ADDR as an argument, it
4991 can access any memory on the target, even if the processor has
4992 separate code and data address spaces.
4994 In this context, objfile_type->builtin_core_addr is a bit odd:
4995 it's a target type for a value the target will never see. It's
4996 only used to hold the values of (typeless) linker symbols, which
4997 are indeed in the unified virtual address space. */
4999 objfile_type->builtin_core_addr
5000 = init_type (TYPE_CODE_INT,
5001 gdbarch_addr_bit (gdbarch) / 8,
5002 TYPE_FLAG_UNSIGNED, "__CORE_ADDR", objfile);
5004 set_objfile_data (objfile, objfile_type_data, objfile_type);
5005 return objfile_type;
5008 extern initialize_file_ftype _initialize_gdbtypes;
5011 _initialize_gdbtypes (void)
5013 gdbtypes_data = gdbarch_data_register_post_init (gdbtypes_post_init);
5014 objfile_type_data = register_objfile_data ();
5016 add_setshow_zuinteger_cmd ("overload", no_class, &overload_debug,
5017 _("Set debugging of C++ overloading."),
5018 _("Show debugging of C++ overloading."),
5019 _("When enabled, ranking of the "
5020 "functions is displayed."),
5022 show_overload_debug,
5023 &setdebuglist, &showdebuglist);
5025 /* Add user knob for controlling resolution of opaque types. */
5026 add_setshow_boolean_cmd ("opaque-type-resolution", class_support,
5027 &opaque_type_resolution,
5028 _("Set resolution of opaque struct/class/union"
5029 " types (if set before loading symbols)."),
5030 _("Show resolution of opaque struct/class/union"
5031 " types (if set before loading symbols)."),
5033 show_opaque_type_resolution,
5034 &setlist, &showlist);
5036 /* Add an option to permit non-strict type checking. */
5037 add_setshow_boolean_cmd ("type", class_support,
5038 &strict_type_checking,
5039 _("Set strict type checking."),
5040 _("Show strict type checking."),
5042 show_strict_type_checking,
5043 &setchecklist, &showchecklist);