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)
1753 type = check_typedef (type);
1755 /* Types that have a dynamic TYPE_DATA_LOCATION are considered
1756 dynamic, even if the type itself is statically defined.
1757 From a user's point of view, this may appear counter-intuitive;
1758 but it makes sense in this context, because the point is to determine
1759 whether any part of the type needs to be resolved before it can
1761 if (TYPE_DATA_LOCATION (type) != NULL
1762 && (TYPE_DATA_LOCATION_KIND (type) == PROP_LOCEXPR
1763 || TYPE_DATA_LOCATION_KIND (type) == PROP_LOCLIST))
1766 switch (TYPE_CODE (type))
1768 case TYPE_CODE_RANGE:
1770 /* A range type is obviously dynamic if it has at least one
1771 dynamic bound. But also consider the range type to be
1772 dynamic when its subtype is dynamic, even if the bounds
1773 of the range type are static. It allows us to assume that
1774 the subtype of a static range type is also static. */
1775 return (!has_static_range (TYPE_RANGE_DATA (type))
1776 || is_dynamic_type_internal (TYPE_TARGET_TYPE (type)));
1779 case TYPE_CODE_ARRAY:
1781 gdb_assert (TYPE_NFIELDS (type) == 1);
1783 /* The array is dynamic if either the bounds are dynamic,
1784 or the elements it contains have a dynamic contents. */
1785 if (is_dynamic_type_internal (TYPE_INDEX_TYPE (type)))
1787 return is_dynamic_type_internal (TYPE_TARGET_TYPE (type));
1790 case TYPE_CODE_STRUCT:
1791 case TYPE_CODE_UNION:
1795 for (i = 0; i < TYPE_NFIELDS (type); ++i)
1796 if (!field_is_static (&TYPE_FIELD (type, i))
1797 && is_dynamic_type_internal (TYPE_FIELD_TYPE (type, i)))
1806 /* See gdbtypes.h. */
1809 is_dynamic_type (struct type *type)
1811 return is_dynamic_type_internal (type);
1814 static struct type *resolve_dynamic_type_internal
1815 (struct type *type, struct property_addr_info *addr_stack);
1817 /* Given a dynamic range type (dyn_range_type) and a stack of
1818 struct property_addr_info elements, return a static version
1821 static struct type *
1822 resolve_dynamic_range (struct type *dyn_range_type,
1823 struct property_addr_info *addr_stack)
1826 struct type *static_range_type, *static_target_type;
1827 const struct dynamic_prop *prop;
1828 const struct dwarf2_locexpr_baton *baton;
1829 struct dynamic_prop low_bound, high_bound;
1831 gdb_assert (TYPE_CODE (dyn_range_type) == TYPE_CODE_RANGE);
1833 prop = &TYPE_RANGE_DATA (dyn_range_type)->low;
1834 if (dwarf2_evaluate_property (prop, addr_stack, &value))
1836 low_bound.kind = PROP_CONST;
1837 low_bound.data.const_val = value;
1841 low_bound.kind = PROP_UNDEFINED;
1842 low_bound.data.const_val = 0;
1845 prop = &TYPE_RANGE_DATA (dyn_range_type)->high;
1846 if (dwarf2_evaluate_property (prop, addr_stack, &value))
1848 high_bound.kind = PROP_CONST;
1849 high_bound.data.const_val = value;
1851 if (TYPE_RANGE_DATA (dyn_range_type)->flag_upper_bound_is_count)
1852 high_bound.data.const_val
1853 = low_bound.data.const_val + high_bound.data.const_val - 1;
1857 high_bound.kind = PROP_UNDEFINED;
1858 high_bound.data.const_val = 0;
1862 = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (dyn_range_type),
1864 static_range_type = create_range_type (copy_type (dyn_range_type),
1866 &low_bound, &high_bound);
1867 TYPE_RANGE_DATA (static_range_type)->flag_bound_evaluated = 1;
1868 return static_range_type;
1871 /* Resolves dynamic bound values of an array type TYPE to static ones.
1872 ADDR_STACK is a stack of struct property_addr_info to be used
1873 if needed during the dynamic resolution. */
1875 static struct type *
1876 resolve_dynamic_array (struct type *type,
1877 struct property_addr_info *addr_stack)
1880 struct type *elt_type;
1881 struct type *range_type;
1882 struct type *ary_dim;
1884 gdb_assert (TYPE_CODE (type) == TYPE_CODE_ARRAY);
1887 range_type = check_typedef (TYPE_INDEX_TYPE (elt_type));
1888 range_type = resolve_dynamic_range (range_type, addr_stack);
1890 ary_dim = check_typedef (TYPE_TARGET_TYPE (elt_type));
1892 if (ary_dim != NULL && TYPE_CODE (ary_dim) == TYPE_CODE_ARRAY)
1893 elt_type = resolve_dynamic_array (TYPE_TARGET_TYPE (type), addr_stack);
1895 elt_type = TYPE_TARGET_TYPE (type);
1897 return create_array_type (copy_type (type),
1902 /* Resolve dynamic bounds of members of the union TYPE to static
1903 bounds. ADDR_STACK is a stack of struct property_addr_info
1904 to be used if needed during the dynamic resolution. */
1906 static struct type *
1907 resolve_dynamic_union (struct type *type,
1908 struct property_addr_info *addr_stack)
1910 struct type *resolved_type;
1912 unsigned int max_len = 0;
1914 gdb_assert (TYPE_CODE (type) == TYPE_CODE_UNION);
1916 resolved_type = copy_type (type);
1917 TYPE_FIELDS (resolved_type)
1918 = TYPE_ALLOC (resolved_type,
1919 TYPE_NFIELDS (resolved_type) * sizeof (struct field));
1920 memcpy (TYPE_FIELDS (resolved_type),
1922 TYPE_NFIELDS (resolved_type) * sizeof (struct field));
1923 for (i = 0; i < TYPE_NFIELDS (resolved_type); ++i)
1927 if (field_is_static (&TYPE_FIELD (type, i)))
1930 t = resolve_dynamic_type_internal (TYPE_FIELD_TYPE (resolved_type, i),
1932 TYPE_FIELD_TYPE (resolved_type, i) = t;
1933 if (TYPE_LENGTH (t) > max_len)
1934 max_len = TYPE_LENGTH (t);
1937 TYPE_LENGTH (resolved_type) = max_len;
1938 return resolved_type;
1941 /* Resolve dynamic bounds of members of the struct TYPE to static
1942 bounds. ADDR_STACK is a stack of struct property_addr_info to
1943 be used if needed during the dynamic resolution. */
1945 static struct type *
1946 resolve_dynamic_struct (struct type *type,
1947 struct property_addr_info *addr_stack)
1949 struct type *resolved_type;
1951 unsigned resolved_type_bit_length = 0;
1953 gdb_assert (TYPE_CODE (type) == TYPE_CODE_STRUCT);
1954 gdb_assert (TYPE_NFIELDS (type) > 0);
1956 resolved_type = copy_type (type);
1957 TYPE_FIELDS (resolved_type)
1958 = TYPE_ALLOC (resolved_type,
1959 TYPE_NFIELDS (resolved_type) * sizeof (struct field));
1960 memcpy (TYPE_FIELDS (resolved_type),
1962 TYPE_NFIELDS (resolved_type) * sizeof (struct field));
1963 for (i = 0; i < TYPE_NFIELDS (resolved_type); ++i)
1965 unsigned new_bit_length;
1966 struct property_addr_info pinfo;
1968 if (field_is_static (&TYPE_FIELD (type, i)))
1971 /* As we know this field is not a static field, the field's
1972 field_loc_kind should be FIELD_LOC_KIND_BITPOS. Verify
1973 this is the case, but only trigger a simple error rather
1974 than an internal error if that fails. While failing
1975 that verification indicates a bug in our code, the error
1976 is not severe enough to suggest to the user he stops
1977 his debugging session because of it. */
1978 if (TYPE_FIELD_LOC_KIND (type, i) != FIELD_LOC_KIND_BITPOS)
1979 error (_("Cannot determine struct field location"
1980 " (invalid location kind)"));
1982 pinfo.type = check_typedef (TYPE_FIELD_TYPE (type, i));
1983 pinfo.addr = addr_stack->addr;
1984 pinfo.next = addr_stack;
1986 TYPE_FIELD_TYPE (resolved_type, i)
1987 = resolve_dynamic_type_internal (TYPE_FIELD_TYPE (resolved_type, i),
1989 gdb_assert (TYPE_FIELD_LOC_KIND (resolved_type, i)
1990 == FIELD_LOC_KIND_BITPOS);
1992 new_bit_length = TYPE_FIELD_BITPOS (resolved_type, i);
1993 if (TYPE_FIELD_BITSIZE (resolved_type, i) != 0)
1994 new_bit_length += TYPE_FIELD_BITSIZE (resolved_type, i);
1996 new_bit_length += (TYPE_LENGTH (TYPE_FIELD_TYPE (resolved_type, i))
1999 /* Normally, we would use the position and size of the last field
2000 to determine the size of the enclosing structure. But GCC seems
2001 to be encoding the position of some fields incorrectly when
2002 the struct contains a dynamic field that is not placed last.
2003 So we compute the struct size based on the field that has
2004 the highest position + size - probably the best we can do. */
2005 if (new_bit_length > resolved_type_bit_length)
2006 resolved_type_bit_length = new_bit_length;
2009 TYPE_LENGTH (resolved_type)
2010 = (resolved_type_bit_length + TARGET_CHAR_BIT - 1) / TARGET_CHAR_BIT;
2012 return resolved_type;
2015 /* Worker for resolved_dynamic_type. */
2017 static struct type *
2018 resolve_dynamic_type_internal (struct type *type,
2019 struct property_addr_info *addr_stack)
2021 struct type *real_type = check_typedef (type);
2022 struct type *resolved_type = type;
2023 struct dynamic_prop *prop;
2026 if (!is_dynamic_type_internal (real_type))
2029 if (TYPE_CODE (type) == TYPE_CODE_TYPEDEF)
2031 resolved_type = copy_type (type);
2032 TYPE_TARGET_TYPE (resolved_type)
2033 = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (type), addr_stack);
2037 /* Before trying to resolve TYPE, make sure it is not a stub. */
2040 switch (TYPE_CODE (type))
2042 case TYPE_CODE_ARRAY:
2043 resolved_type = resolve_dynamic_array (type, addr_stack);
2046 case TYPE_CODE_RANGE:
2047 resolved_type = resolve_dynamic_range (type, addr_stack);
2050 case TYPE_CODE_UNION:
2051 resolved_type = resolve_dynamic_union (type, addr_stack);
2054 case TYPE_CODE_STRUCT:
2055 resolved_type = resolve_dynamic_struct (type, addr_stack);
2060 /* Resolve data_location attribute. */
2061 prop = TYPE_DATA_LOCATION (resolved_type);
2062 if (prop != NULL && dwarf2_evaluate_property (prop, addr_stack, &value))
2064 TYPE_DYN_PROP_ADDR (prop) = value;
2065 TYPE_DYN_PROP_KIND (prop) = PROP_CONST;
2068 return resolved_type;
2071 /* See gdbtypes.h */
2074 resolve_dynamic_type (struct type *type, CORE_ADDR addr)
2076 struct property_addr_info pinfo = {check_typedef (type), addr, NULL};
2078 return resolve_dynamic_type_internal (type, &pinfo);
2081 /* See gdbtypes.h */
2083 struct dynamic_prop *
2084 get_dyn_prop (enum dynamic_prop_node_kind prop_kind, const struct type *type)
2086 struct dynamic_prop_list *node = TYPE_DYN_PROP_LIST (type);
2088 while (node != NULL)
2090 if (node->prop_kind == prop_kind)
2097 /* See gdbtypes.h */
2100 add_dyn_prop (enum dynamic_prop_node_kind prop_kind, struct dynamic_prop prop,
2101 struct type *type, struct objfile *objfile)
2103 struct dynamic_prop_list *temp;
2105 gdb_assert (TYPE_OBJFILE_OWNED (type));
2107 temp = obstack_alloc (&objfile->objfile_obstack,
2108 sizeof (struct dynamic_prop_list));
2109 temp->prop_kind = prop_kind;
2111 temp->next = TYPE_DYN_PROP_LIST (type);
2113 TYPE_DYN_PROP_LIST (type) = temp;
2117 /* Find the real type of TYPE. This function returns the real type,
2118 after removing all layers of typedefs, and completing opaque or stub
2119 types. Completion changes the TYPE argument, but stripping of
2122 Instance flags (e.g. const/volatile) are preserved as typedefs are
2123 stripped. If necessary a new qualified form of the underlying type
2126 NOTE: This will return a typedef if TYPE_TARGET_TYPE for the typedef has
2127 not been computed and we're either in the middle of reading symbols, or
2128 there was no name for the typedef in the debug info.
2130 NOTE: Lookup of opaque types can throw errors for invalid symbol files.
2131 QUITs in the symbol reading code can also throw.
2132 Thus this function can throw an exception.
2134 If TYPE is a TYPE_CODE_TYPEDEF, its length is updated to the length of
2137 If this is a stubbed struct (i.e. declared as struct foo *), see if
2138 we can find a full definition in some other file. If so, copy this
2139 definition, so we can use it in future. There used to be a comment
2140 (but not any code) that if we don't find a full definition, we'd
2141 set a flag so we don't spend time in the future checking the same
2142 type. That would be a mistake, though--we might load in more
2143 symbols which contain a full definition for the type. */
2146 check_typedef (struct type *type)
2148 struct type *orig_type = type;
2149 /* While we're removing typedefs, we don't want to lose qualifiers.
2150 E.g., const/volatile. */
2151 int instance_flags = TYPE_INSTANCE_FLAGS (type);
2155 while (TYPE_CODE (type) == TYPE_CODE_TYPEDEF)
2157 if (!TYPE_TARGET_TYPE (type))
2162 /* It is dangerous to call lookup_symbol if we are currently
2163 reading a symtab. Infinite recursion is one danger. */
2164 if (currently_reading_symtab)
2165 return make_qualified_type (type, instance_flags, NULL);
2167 name = type_name_no_tag (type);
2168 /* FIXME: shouldn't we separately check the TYPE_NAME and
2169 the TYPE_TAG_NAME, and look in STRUCT_DOMAIN and/or
2170 VAR_DOMAIN as appropriate? (this code was written before
2171 TYPE_NAME and TYPE_TAG_NAME were separate). */
2174 stub_noname_complaint ();
2175 return make_qualified_type (type, instance_flags, NULL);
2177 sym = lookup_symbol (name, 0, STRUCT_DOMAIN, 0);
2179 TYPE_TARGET_TYPE (type) = SYMBOL_TYPE (sym);
2180 else /* TYPE_CODE_UNDEF */
2181 TYPE_TARGET_TYPE (type) = alloc_type_arch (get_type_arch (type));
2183 type = TYPE_TARGET_TYPE (type);
2185 /* Preserve the instance flags as we traverse down the typedef chain.
2187 Handling address spaces/classes is nasty, what do we do if there's a
2189 E.g., what if an outer typedef marks the type as class_1 and an inner
2190 typedef marks the type as class_2?
2191 This is the wrong place to do such error checking. We leave it to
2192 the code that created the typedef in the first place to flag the
2193 error. We just pick the outer address space (akin to letting the
2194 outer cast in a chain of casting win), instead of assuming
2195 "it can't happen". */
2197 const int ALL_SPACES = (TYPE_INSTANCE_FLAG_CODE_SPACE
2198 | TYPE_INSTANCE_FLAG_DATA_SPACE);
2199 const int ALL_CLASSES = TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL;
2200 int new_instance_flags = TYPE_INSTANCE_FLAGS (type);
2202 /* Treat code vs data spaces and address classes separately. */
2203 if ((instance_flags & ALL_SPACES) != 0)
2204 new_instance_flags &= ~ALL_SPACES;
2205 if ((instance_flags & ALL_CLASSES) != 0)
2206 new_instance_flags &= ~ALL_CLASSES;
2208 instance_flags |= new_instance_flags;
2212 /* If this is a struct/class/union with no fields, then check
2213 whether a full definition exists somewhere else. This is for
2214 systems where a type definition with no fields is issued for such
2215 types, instead of identifying them as stub types in the first
2218 if (TYPE_IS_OPAQUE (type)
2219 && opaque_type_resolution
2220 && !currently_reading_symtab)
2222 const char *name = type_name_no_tag (type);
2223 struct type *newtype;
2227 stub_noname_complaint ();
2228 return make_qualified_type (type, instance_flags, NULL);
2230 newtype = lookup_transparent_type (name);
2234 /* If the resolved type and the stub are in the same
2235 objfile, then replace the stub type with the real deal.
2236 But if they're in separate objfiles, leave the stub
2237 alone; we'll just look up the transparent type every time
2238 we call check_typedef. We can't create pointers between
2239 types allocated to different objfiles, since they may
2240 have different lifetimes. Trying to copy NEWTYPE over to
2241 TYPE's objfile is pointless, too, since you'll have to
2242 move over any other types NEWTYPE refers to, which could
2243 be an unbounded amount of stuff. */
2244 if (TYPE_OBJFILE (newtype) == TYPE_OBJFILE (type))
2245 type = make_qualified_type (newtype,
2246 TYPE_INSTANCE_FLAGS (type),
2252 /* Otherwise, rely on the stub flag being set for opaque/stubbed
2254 else if (TYPE_STUB (type) && !currently_reading_symtab)
2256 const char *name = type_name_no_tag (type);
2257 /* FIXME: shouldn't we separately check the TYPE_NAME and the
2258 TYPE_TAG_NAME, and look in STRUCT_DOMAIN and/or VAR_DOMAIN
2259 as appropriate? (this code was written before TYPE_NAME and
2260 TYPE_TAG_NAME were separate). */
2265 stub_noname_complaint ();
2266 return make_qualified_type (type, instance_flags, NULL);
2268 sym = lookup_symbol (name, 0, STRUCT_DOMAIN, 0);
2271 /* Same as above for opaque types, we can replace the stub
2272 with the complete type only if they are in the same
2274 if (TYPE_OBJFILE (SYMBOL_TYPE(sym)) == TYPE_OBJFILE (type))
2275 type = make_qualified_type (SYMBOL_TYPE (sym),
2276 TYPE_INSTANCE_FLAGS (type),
2279 type = SYMBOL_TYPE (sym);
2283 if (TYPE_TARGET_STUB (type))
2285 struct type *range_type;
2286 struct type *target_type = check_typedef (TYPE_TARGET_TYPE (type));
2288 if (TYPE_STUB (target_type) || TYPE_TARGET_STUB (target_type))
2290 /* Nothing we can do. */
2292 else if (TYPE_CODE (type) == TYPE_CODE_RANGE)
2294 TYPE_LENGTH (type) = TYPE_LENGTH (target_type);
2295 TYPE_TARGET_STUB (type) = 0;
2299 type = make_qualified_type (type, instance_flags, NULL);
2301 /* Cache TYPE_LENGTH for future use. */
2302 TYPE_LENGTH (orig_type) = TYPE_LENGTH (type);
2307 /* Parse a type expression in the string [P..P+LENGTH). If an error
2308 occurs, silently return a void type. */
2310 static struct type *
2311 safe_parse_type (struct gdbarch *gdbarch, char *p, int length)
2313 struct ui_file *saved_gdb_stderr;
2314 struct type *type = NULL; /* Initialize to keep gcc happy. */
2316 /* Suppress error messages. */
2317 saved_gdb_stderr = gdb_stderr;
2318 gdb_stderr = ui_file_new ();
2320 /* Call parse_and_eval_type() without fear of longjmp()s. */
2323 type = parse_and_eval_type (p, length);
2325 CATCH (except, RETURN_MASK_ERROR)
2327 type = builtin_type (gdbarch)->builtin_void;
2331 /* Stop suppressing error messages. */
2332 ui_file_delete (gdb_stderr);
2333 gdb_stderr = saved_gdb_stderr;
2338 /* Ugly hack to convert method stubs into method types.
2340 He ain't kiddin'. This demangles the name of the method into a
2341 string including argument types, parses out each argument type,
2342 generates a string casting a zero to that type, evaluates the
2343 string, and stuffs the resulting type into an argtype vector!!!
2344 Then it knows the type of the whole function (including argument
2345 types for overloading), which info used to be in the stab's but was
2346 removed to hack back the space required for them. */
2349 check_stub_method (struct type *type, int method_id, int signature_id)
2351 struct gdbarch *gdbarch = get_type_arch (type);
2353 char *mangled_name = gdb_mangle_name (type, method_id, signature_id);
2354 char *demangled_name = gdb_demangle (mangled_name,
2355 DMGL_PARAMS | DMGL_ANSI);
2356 char *argtypetext, *p;
2357 int depth = 0, argcount = 1;
2358 struct field *argtypes;
2361 /* Make sure we got back a function string that we can use. */
2363 p = strchr (demangled_name, '(');
2367 if (demangled_name == NULL || p == NULL)
2368 error (_("Internal: Cannot demangle mangled name `%s'."),
2371 /* Now, read in the parameters that define this type. */
2376 if (*p == '(' || *p == '<')
2380 else if (*p == ')' || *p == '>')
2384 else if (*p == ',' && depth == 0)
2392 /* If we read one argument and it was ``void'', don't count it. */
2393 if (startswith (argtypetext, "(void)"))
2396 /* We need one extra slot, for the THIS pointer. */
2398 argtypes = (struct field *)
2399 TYPE_ALLOC (type, (argcount + 1) * sizeof (struct field));
2402 /* Add THIS pointer for non-static methods. */
2403 f = TYPE_FN_FIELDLIST1 (type, method_id);
2404 if (TYPE_FN_FIELD_STATIC_P (f, signature_id))
2408 argtypes[0].type = lookup_pointer_type (type);
2412 if (*p != ')') /* () means no args, skip while. */
2417 if (depth <= 0 && (*p == ',' || *p == ')'))
2419 /* Avoid parsing of ellipsis, they will be handled below.
2420 Also avoid ``void'' as above. */
2421 if (strncmp (argtypetext, "...", p - argtypetext) != 0
2422 && strncmp (argtypetext, "void", p - argtypetext) != 0)
2424 argtypes[argcount].type =
2425 safe_parse_type (gdbarch, argtypetext, p - argtypetext);
2428 argtypetext = p + 1;
2431 if (*p == '(' || *p == '<')
2435 else if (*p == ')' || *p == '>')
2444 TYPE_FN_FIELD_PHYSNAME (f, signature_id) = mangled_name;
2446 /* Now update the old "stub" type into a real type. */
2447 mtype = TYPE_FN_FIELD_TYPE (f, signature_id);
2448 /* MTYPE may currently be a function (TYPE_CODE_FUNC).
2449 We want a method (TYPE_CODE_METHOD). */
2450 smash_to_method_type (mtype, type, TYPE_TARGET_TYPE (mtype),
2451 argtypes, argcount, p[-2] == '.');
2452 TYPE_STUB (mtype) = 0;
2453 TYPE_FN_FIELD_STUB (f, signature_id) = 0;
2455 xfree (demangled_name);
2458 /* This is the external interface to check_stub_method, above. This
2459 function unstubs all of the signatures for TYPE's METHOD_ID method
2460 name. After calling this function TYPE_FN_FIELD_STUB will be
2461 cleared for each signature and TYPE_FN_FIELDLIST_NAME will be
2464 This function unfortunately can not die until stabs do. */
2467 check_stub_method_group (struct type *type, int method_id)
2469 int len = TYPE_FN_FIELDLIST_LENGTH (type, method_id);
2470 struct fn_field *f = TYPE_FN_FIELDLIST1 (type, method_id);
2471 int j, found_stub = 0;
2473 for (j = 0; j < len; j++)
2474 if (TYPE_FN_FIELD_STUB (f, j))
2477 check_stub_method (type, method_id, j);
2480 /* GNU v3 methods with incorrect names were corrected when we read
2481 in type information, because it was cheaper to do it then. The
2482 only GNU v2 methods with incorrect method names are operators and
2483 destructors; destructors were also corrected when we read in type
2486 Therefore the only thing we need to handle here are v2 operator
2488 if (found_stub && !startswith (TYPE_FN_FIELD_PHYSNAME (f, 0), "_Z"))
2491 char dem_opname[256];
2493 ret = cplus_demangle_opname (TYPE_FN_FIELDLIST_NAME (type,
2495 dem_opname, DMGL_ANSI);
2497 ret = cplus_demangle_opname (TYPE_FN_FIELDLIST_NAME (type,
2501 TYPE_FN_FIELDLIST_NAME (type, method_id) = xstrdup (dem_opname);
2505 /* Ensure it is in .rodata (if available) by workarounding GCC PR 44690. */
2506 const struct cplus_struct_type cplus_struct_default = { };
2509 allocate_cplus_struct_type (struct type *type)
2511 if (HAVE_CPLUS_STRUCT (type))
2512 /* Structure was already allocated. Nothing more to do. */
2515 TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_CPLUS_STUFF;
2516 TYPE_RAW_CPLUS_SPECIFIC (type) = (struct cplus_struct_type *)
2517 TYPE_ALLOC (type, sizeof (struct cplus_struct_type));
2518 *(TYPE_RAW_CPLUS_SPECIFIC (type)) = cplus_struct_default;
2519 set_type_vptr_fieldno (type, -1);
2522 const struct gnat_aux_type gnat_aux_default =
2525 /* Set the TYPE's type-specific kind to TYPE_SPECIFIC_GNAT_STUFF,
2526 and allocate the associated gnat-specific data. The gnat-specific
2527 data is also initialized to gnat_aux_default. */
2530 allocate_gnat_aux_type (struct type *type)
2532 TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_GNAT_STUFF;
2533 TYPE_GNAT_SPECIFIC (type) = (struct gnat_aux_type *)
2534 TYPE_ALLOC (type, sizeof (struct gnat_aux_type));
2535 *(TYPE_GNAT_SPECIFIC (type)) = gnat_aux_default;
2538 /* Helper function to initialize the standard scalar types.
2540 If NAME is non-NULL, then it is used to initialize the type name.
2541 Note that NAME is not copied; it is required to have a lifetime at
2542 least as long as OBJFILE. */
2545 init_type (enum type_code code, int length, int flags,
2546 const char *name, struct objfile *objfile)
2550 type = alloc_type (objfile);
2551 TYPE_CODE (type) = code;
2552 TYPE_LENGTH (type) = length;
2554 gdb_assert (!(flags & (TYPE_FLAG_MIN - 1)));
2555 if (flags & TYPE_FLAG_UNSIGNED)
2556 TYPE_UNSIGNED (type) = 1;
2557 if (flags & TYPE_FLAG_NOSIGN)
2558 TYPE_NOSIGN (type) = 1;
2559 if (flags & TYPE_FLAG_STUB)
2560 TYPE_STUB (type) = 1;
2561 if (flags & TYPE_FLAG_TARGET_STUB)
2562 TYPE_TARGET_STUB (type) = 1;
2563 if (flags & TYPE_FLAG_STATIC)
2564 TYPE_STATIC (type) = 1;
2565 if (flags & TYPE_FLAG_PROTOTYPED)
2566 TYPE_PROTOTYPED (type) = 1;
2567 if (flags & TYPE_FLAG_INCOMPLETE)
2568 TYPE_INCOMPLETE (type) = 1;
2569 if (flags & TYPE_FLAG_VARARGS)
2570 TYPE_VARARGS (type) = 1;
2571 if (flags & TYPE_FLAG_VECTOR)
2572 TYPE_VECTOR (type) = 1;
2573 if (flags & TYPE_FLAG_STUB_SUPPORTED)
2574 TYPE_STUB_SUPPORTED (type) = 1;
2575 if (flags & TYPE_FLAG_FIXED_INSTANCE)
2576 TYPE_FIXED_INSTANCE (type) = 1;
2577 if (flags & TYPE_FLAG_GNU_IFUNC)
2578 TYPE_GNU_IFUNC (type) = 1;
2580 TYPE_NAME (type) = name;
2584 if (name && strcmp (name, "char") == 0)
2585 TYPE_NOSIGN (type) = 1;
2589 case TYPE_CODE_STRUCT:
2590 case TYPE_CODE_UNION:
2591 case TYPE_CODE_NAMESPACE:
2592 INIT_CPLUS_SPECIFIC (type);
2595 TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_FLOATFORMAT;
2597 case TYPE_CODE_FUNC:
2598 INIT_FUNC_SPECIFIC (type);
2604 /* Queries on types. */
2607 can_dereference (struct type *t)
2609 /* FIXME: Should we return true for references as well as
2614 && TYPE_CODE (t) == TYPE_CODE_PTR
2615 && TYPE_CODE (TYPE_TARGET_TYPE (t)) != TYPE_CODE_VOID);
2619 is_integral_type (struct type *t)
2624 && ((TYPE_CODE (t) == TYPE_CODE_INT)
2625 || (TYPE_CODE (t) == TYPE_CODE_ENUM)
2626 || (TYPE_CODE (t) == TYPE_CODE_FLAGS)
2627 || (TYPE_CODE (t) == TYPE_CODE_CHAR)
2628 || (TYPE_CODE (t) == TYPE_CODE_RANGE)
2629 || (TYPE_CODE (t) == TYPE_CODE_BOOL)));
2632 /* Return true if TYPE is scalar. */
2635 is_scalar_type (struct type *type)
2637 CHECK_TYPEDEF (type);
2639 switch (TYPE_CODE (type))
2641 case TYPE_CODE_ARRAY:
2642 case TYPE_CODE_STRUCT:
2643 case TYPE_CODE_UNION:
2645 case TYPE_CODE_STRING:
2652 /* Return true if T is scalar, or a composite type which in practice has
2653 the memory layout of a scalar type. E.g., an array or struct with only
2654 one scalar element inside it, or a union with only scalar elements. */
2657 is_scalar_type_recursive (struct type *t)
2661 if (is_scalar_type (t))
2663 /* Are we dealing with an array or string of known dimensions? */
2664 else if ((TYPE_CODE (t) == TYPE_CODE_ARRAY
2665 || TYPE_CODE (t) == TYPE_CODE_STRING) && TYPE_NFIELDS (t) == 1
2666 && TYPE_CODE (TYPE_INDEX_TYPE (t)) == TYPE_CODE_RANGE)
2668 LONGEST low_bound, high_bound;
2669 struct type *elt_type = check_typedef (TYPE_TARGET_TYPE (t));
2671 get_discrete_bounds (TYPE_INDEX_TYPE (t), &low_bound, &high_bound);
2673 return high_bound == low_bound && is_scalar_type_recursive (elt_type);
2675 /* Are we dealing with a struct with one element? */
2676 else if (TYPE_CODE (t) == TYPE_CODE_STRUCT && TYPE_NFIELDS (t) == 1)
2677 return is_scalar_type_recursive (TYPE_FIELD_TYPE (t, 0));
2678 else if (TYPE_CODE (t) == TYPE_CODE_UNION)
2680 int i, n = TYPE_NFIELDS (t);
2682 /* If all elements of the union are scalar, then the union is scalar. */
2683 for (i = 0; i < n; i++)
2684 if (!is_scalar_type_recursive (TYPE_FIELD_TYPE (t, i)))
2693 /* Return true is T is a class or a union. False otherwise. */
2696 class_or_union_p (const struct type *t)
2698 return (TYPE_CODE (t) == TYPE_CODE_STRUCT
2699 || TYPE_CODE (t) == TYPE_CODE_UNION);
2702 /* A helper function which returns true if types A and B represent the
2703 "same" class type. This is true if the types have the same main
2704 type, or the same name. */
2707 class_types_same_p (const struct type *a, const struct type *b)
2709 return (TYPE_MAIN_TYPE (a) == TYPE_MAIN_TYPE (b)
2710 || (TYPE_NAME (a) && TYPE_NAME (b)
2711 && !strcmp (TYPE_NAME (a), TYPE_NAME (b))));
2714 /* If BASE is an ancestor of DCLASS return the distance between them.
2715 otherwise return -1;
2719 class B: public A {};
2720 class C: public B {};
2723 distance_to_ancestor (A, A, 0) = 0
2724 distance_to_ancestor (A, B, 0) = 1
2725 distance_to_ancestor (A, C, 0) = 2
2726 distance_to_ancestor (A, D, 0) = 3
2728 If PUBLIC is 1 then only public ancestors are considered,
2729 and the function returns the distance only if BASE is a public ancestor
2733 distance_to_ancestor (A, D, 1) = -1. */
2736 distance_to_ancestor (struct type *base, struct type *dclass, int is_public)
2741 CHECK_TYPEDEF (base);
2742 CHECK_TYPEDEF (dclass);
2744 if (class_types_same_p (base, dclass))
2747 for (i = 0; i < TYPE_N_BASECLASSES (dclass); i++)
2749 if (is_public && ! BASETYPE_VIA_PUBLIC (dclass, i))
2752 d = distance_to_ancestor (base, TYPE_BASECLASS (dclass, i), is_public);
2760 /* Check whether BASE is an ancestor or base class or DCLASS
2761 Return 1 if so, and 0 if not.
2762 Note: If BASE and DCLASS are of the same type, this function
2763 will return 1. So for some class A, is_ancestor (A, A) will
2767 is_ancestor (struct type *base, struct type *dclass)
2769 return distance_to_ancestor (base, dclass, 0) >= 0;
2772 /* Like is_ancestor, but only returns true when BASE is a public
2773 ancestor of DCLASS. */
2776 is_public_ancestor (struct type *base, struct type *dclass)
2778 return distance_to_ancestor (base, dclass, 1) >= 0;
2781 /* A helper function for is_unique_ancestor. */
2784 is_unique_ancestor_worker (struct type *base, struct type *dclass,
2786 const gdb_byte *valaddr, int embedded_offset,
2787 CORE_ADDR address, struct value *val)
2791 CHECK_TYPEDEF (base);
2792 CHECK_TYPEDEF (dclass);
2794 for (i = 0; i < TYPE_N_BASECLASSES (dclass) && count < 2; ++i)
2799 iter = check_typedef (TYPE_BASECLASS (dclass, i));
2801 this_offset = baseclass_offset (dclass, i, valaddr, embedded_offset,
2804 if (class_types_same_p (base, iter))
2806 /* If this is the first subclass, set *OFFSET and set count
2807 to 1. Otherwise, if this is at the same offset as
2808 previous instances, do nothing. Otherwise, increment
2812 *offset = this_offset;
2815 else if (this_offset == *offset)
2823 count += is_unique_ancestor_worker (base, iter, offset,
2825 embedded_offset + this_offset,
2832 /* Like is_ancestor, but only returns true if BASE is a unique base
2833 class of the type of VAL. */
2836 is_unique_ancestor (struct type *base, struct value *val)
2840 return is_unique_ancestor_worker (base, value_type (val), &offset,
2841 value_contents_for_printing (val),
2842 value_embedded_offset (val),
2843 value_address (val), val) == 1;
2847 /* Overload resolution. */
2849 /* Return the sum of the rank of A with the rank of B. */
2852 sum_ranks (struct rank a, struct rank b)
2855 c.rank = a.rank + b.rank;
2856 c.subrank = a.subrank + b.subrank;
2860 /* Compare rank A and B and return:
2862 1 if a is better than b
2863 -1 if b is better than a. */
2866 compare_ranks (struct rank a, struct rank b)
2868 if (a.rank == b.rank)
2870 if (a.subrank == b.subrank)
2872 if (a.subrank < b.subrank)
2874 if (a.subrank > b.subrank)
2878 if (a.rank < b.rank)
2881 /* a.rank > b.rank */
2885 /* Functions for overload resolution begin here. */
2887 /* Compare two badness vectors A and B and return the result.
2888 0 => A and B are identical
2889 1 => A and B are incomparable
2890 2 => A is better than B
2891 3 => A is worse than B */
2894 compare_badness (struct badness_vector *a, struct badness_vector *b)
2898 short found_pos = 0; /* any positives in c? */
2899 short found_neg = 0; /* any negatives in c? */
2901 /* differing lengths => incomparable */
2902 if (a->length != b->length)
2905 /* Subtract b from a */
2906 for (i = 0; i < a->length; i++)
2908 tmp = compare_ranks (b->rank[i], a->rank[i]);
2918 return 1; /* incomparable */
2920 return 3; /* A > B */
2926 return 2; /* A < B */
2928 return 0; /* A == B */
2932 /* Rank a function by comparing its parameter types (PARMS, length
2933 NPARMS), to the types of an argument list (ARGS, length NARGS).
2934 Return a pointer to a badness vector. This has NARGS + 1
2937 struct badness_vector *
2938 rank_function (struct type **parms, int nparms,
2939 struct value **args, int nargs)
2942 struct badness_vector *bv;
2943 int min_len = nparms < nargs ? nparms : nargs;
2945 bv = xmalloc (sizeof (struct badness_vector));
2946 bv->length = nargs + 1; /* add 1 for the length-match rank. */
2947 bv->rank = XNEWVEC (struct rank, nargs + 1);
2949 /* First compare the lengths of the supplied lists.
2950 If there is a mismatch, set it to a high value. */
2952 /* pai/1997-06-03 FIXME: when we have debug info about default
2953 arguments and ellipsis parameter lists, we should consider those
2954 and rank the length-match more finely. */
2956 LENGTH_MATCH (bv) = (nargs != nparms)
2957 ? LENGTH_MISMATCH_BADNESS
2958 : EXACT_MATCH_BADNESS;
2960 /* Now rank all the parameters of the candidate function. */
2961 for (i = 1; i <= min_len; i++)
2962 bv->rank[i] = rank_one_type (parms[i - 1], value_type (args[i - 1]),
2965 /* If more arguments than parameters, add dummy entries. */
2966 for (i = min_len + 1; i <= nargs; i++)
2967 bv->rank[i] = TOO_FEW_PARAMS_BADNESS;
2972 /* Compare the names of two integer types, assuming that any sign
2973 qualifiers have been checked already. We do it this way because
2974 there may be an "int" in the name of one of the types. */
2977 integer_types_same_name_p (const char *first, const char *second)
2979 int first_p, second_p;
2981 /* If both are shorts, return 1; if neither is a short, keep
2983 first_p = (strstr (first, "short") != NULL);
2984 second_p = (strstr (second, "short") != NULL);
2985 if (first_p && second_p)
2987 if (first_p || second_p)
2990 /* Likewise for long. */
2991 first_p = (strstr (first, "long") != NULL);
2992 second_p = (strstr (second, "long") != NULL);
2993 if (first_p && second_p)
2995 if (first_p || second_p)
2998 /* Likewise for char. */
2999 first_p = (strstr (first, "char") != NULL);
3000 second_p = (strstr (second, "char") != NULL);
3001 if (first_p && second_p)
3003 if (first_p || second_p)
3006 /* They must both be ints. */
3010 /* Compares type A to type B returns 1 if the represent the same type
3014 types_equal (struct type *a, struct type *b)
3016 /* Identical type pointers. */
3017 /* However, this still doesn't catch all cases of same type for b
3018 and a. The reason is that builtin types are different from
3019 the same ones constructed from the object. */
3023 /* Resolve typedefs */
3024 if (TYPE_CODE (a) == TYPE_CODE_TYPEDEF)
3025 a = check_typedef (a);
3026 if (TYPE_CODE (b) == TYPE_CODE_TYPEDEF)
3027 b = check_typedef (b);
3029 /* If after resolving typedefs a and b are not of the same type
3030 code then they are not equal. */
3031 if (TYPE_CODE (a) != TYPE_CODE (b))
3034 /* If a and b are both pointers types or both reference types then
3035 they are equal of the same type iff the objects they refer to are
3036 of the same type. */
3037 if (TYPE_CODE (a) == TYPE_CODE_PTR
3038 || TYPE_CODE (a) == TYPE_CODE_REF)
3039 return types_equal (TYPE_TARGET_TYPE (a),
3040 TYPE_TARGET_TYPE (b));
3042 /* Well, damnit, if the names are exactly the same, I'll say they
3043 are exactly the same. This happens when we generate method
3044 stubs. The types won't point to the same address, but they
3045 really are the same. */
3047 if (TYPE_NAME (a) && TYPE_NAME (b)
3048 && strcmp (TYPE_NAME (a), TYPE_NAME (b)) == 0)
3051 /* Check if identical after resolving typedefs. */
3055 /* Two function types are equal if their argument and return types
3057 if (TYPE_CODE (a) == TYPE_CODE_FUNC)
3061 if (TYPE_NFIELDS (a) != TYPE_NFIELDS (b))
3064 if (!types_equal (TYPE_TARGET_TYPE (a), TYPE_TARGET_TYPE (b)))
3067 for (i = 0; i < TYPE_NFIELDS (a); ++i)
3068 if (!types_equal (TYPE_FIELD_TYPE (a, i), TYPE_FIELD_TYPE (b, i)))
3077 /* Deep comparison of types. */
3079 /* An entry in the type-equality bcache. */
3081 typedef struct type_equality_entry
3083 struct type *type1, *type2;
3084 } type_equality_entry_d;
3086 DEF_VEC_O (type_equality_entry_d);
3088 /* A helper function to compare two strings. Returns 1 if they are
3089 the same, 0 otherwise. Handles NULLs properly. */
3092 compare_maybe_null_strings (const char *s, const char *t)
3094 if (s == NULL && t != NULL)
3096 else if (s != NULL && t == NULL)
3098 else if (s == NULL && t== NULL)
3100 return strcmp (s, t) == 0;
3103 /* A helper function for check_types_worklist that checks two types for
3104 "deep" equality. Returns non-zero if the types are considered the
3105 same, zero otherwise. */
3108 check_types_equal (struct type *type1, struct type *type2,
3109 VEC (type_equality_entry_d) **worklist)
3111 CHECK_TYPEDEF (type1);
3112 CHECK_TYPEDEF (type2);
3117 if (TYPE_CODE (type1) != TYPE_CODE (type2)
3118 || TYPE_LENGTH (type1) != TYPE_LENGTH (type2)
3119 || TYPE_UNSIGNED (type1) != TYPE_UNSIGNED (type2)
3120 || TYPE_NOSIGN (type1) != TYPE_NOSIGN (type2)
3121 || TYPE_VARARGS (type1) != TYPE_VARARGS (type2)
3122 || TYPE_VECTOR (type1) != TYPE_VECTOR (type2)
3123 || TYPE_NOTTEXT (type1) != TYPE_NOTTEXT (type2)
3124 || TYPE_INSTANCE_FLAGS (type1) != TYPE_INSTANCE_FLAGS (type2)
3125 || TYPE_NFIELDS (type1) != TYPE_NFIELDS (type2))
3128 if (!compare_maybe_null_strings (TYPE_TAG_NAME (type1),
3129 TYPE_TAG_NAME (type2)))
3131 if (!compare_maybe_null_strings (TYPE_NAME (type1), TYPE_NAME (type2)))
3134 if (TYPE_CODE (type1) == TYPE_CODE_RANGE)
3136 if (memcmp (TYPE_RANGE_DATA (type1), TYPE_RANGE_DATA (type2),
3137 sizeof (*TYPE_RANGE_DATA (type1))) != 0)
3144 for (i = 0; i < TYPE_NFIELDS (type1); ++i)
3146 const struct field *field1 = &TYPE_FIELD (type1, i);
3147 const struct field *field2 = &TYPE_FIELD (type2, i);
3148 struct type_equality_entry entry;
3150 if (FIELD_ARTIFICIAL (*field1) != FIELD_ARTIFICIAL (*field2)
3151 || FIELD_BITSIZE (*field1) != FIELD_BITSIZE (*field2)
3152 || FIELD_LOC_KIND (*field1) != FIELD_LOC_KIND (*field2))
3154 if (!compare_maybe_null_strings (FIELD_NAME (*field1),
3155 FIELD_NAME (*field2)))
3157 switch (FIELD_LOC_KIND (*field1))
3159 case FIELD_LOC_KIND_BITPOS:
3160 if (FIELD_BITPOS (*field1) != FIELD_BITPOS (*field2))
3163 case FIELD_LOC_KIND_ENUMVAL:
3164 if (FIELD_ENUMVAL (*field1) != FIELD_ENUMVAL (*field2))
3167 case FIELD_LOC_KIND_PHYSADDR:
3168 if (FIELD_STATIC_PHYSADDR (*field1)
3169 != FIELD_STATIC_PHYSADDR (*field2))
3172 case FIELD_LOC_KIND_PHYSNAME:
3173 if (!compare_maybe_null_strings (FIELD_STATIC_PHYSNAME (*field1),
3174 FIELD_STATIC_PHYSNAME (*field2)))
3177 case FIELD_LOC_KIND_DWARF_BLOCK:
3179 struct dwarf2_locexpr_baton *block1, *block2;
3181 block1 = FIELD_DWARF_BLOCK (*field1);
3182 block2 = FIELD_DWARF_BLOCK (*field2);
3183 if (block1->per_cu != block2->per_cu
3184 || block1->size != block2->size
3185 || memcmp (block1->data, block2->data, block1->size) != 0)
3190 internal_error (__FILE__, __LINE__, _("Unsupported field kind "
3191 "%d by check_types_equal"),
3192 FIELD_LOC_KIND (*field1));
3195 entry.type1 = FIELD_TYPE (*field1);
3196 entry.type2 = FIELD_TYPE (*field2);
3197 VEC_safe_push (type_equality_entry_d, *worklist, &entry);
3201 if (TYPE_TARGET_TYPE (type1) != NULL)
3203 struct type_equality_entry entry;
3205 if (TYPE_TARGET_TYPE (type2) == NULL)
3208 entry.type1 = TYPE_TARGET_TYPE (type1);
3209 entry.type2 = TYPE_TARGET_TYPE (type2);
3210 VEC_safe_push (type_equality_entry_d, *worklist, &entry);
3212 else if (TYPE_TARGET_TYPE (type2) != NULL)
3218 /* Check types on a worklist for equality. Returns zero if any pair
3219 is not equal, non-zero if they are all considered equal. */
3222 check_types_worklist (VEC (type_equality_entry_d) **worklist,
3223 struct bcache *cache)
3225 while (!VEC_empty (type_equality_entry_d, *worklist))
3227 struct type_equality_entry entry;
3230 entry = *VEC_last (type_equality_entry_d, *worklist);
3231 VEC_pop (type_equality_entry_d, *worklist);
3233 /* If the type pair has already been visited, we know it is
3235 bcache_full (&entry, sizeof (entry), cache, &added);
3239 if (check_types_equal (entry.type1, entry.type2, worklist) == 0)
3246 /* Return non-zero if types TYPE1 and TYPE2 are equal, as determined by a
3247 "deep comparison". Otherwise return zero. */
3250 types_deeply_equal (struct type *type1, struct type *type2)
3252 struct gdb_exception except = exception_none;
3254 struct bcache *cache;
3255 VEC (type_equality_entry_d) *worklist = NULL;
3256 struct type_equality_entry entry;
3258 gdb_assert (type1 != NULL && type2 != NULL);
3260 /* Early exit for the simple case. */
3264 cache = bcache_xmalloc (NULL, NULL);
3266 entry.type1 = type1;
3267 entry.type2 = type2;
3268 VEC_safe_push (type_equality_entry_d, worklist, &entry);
3270 /* check_types_worklist calls several nested helper functions, some
3271 of which can raise a GDB exception, so we just check and rethrow
3272 here. If there is a GDB exception, a comparison is not capable
3273 (or trusted), so exit. */
3276 result = check_types_worklist (&worklist, cache);
3278 CATCH (ex, RETURN_MASK_ALL)
3284 bcache_xfree (cache);
3285 VEC_free (type_equality_entry_d, worklist);
3287 /* Rethrow if there was a problem. */
3288 if (except.reason < 0)
3289 throw_exception (except);
3294 /* Compare one type (PARM) for compatibility with another (ARG).
3295 * PARM is intended to be the parameter type of a function; and
3296 * ARG is the supplied argument's type. This function tests if
3297 * the latter can be converted to the former.
3298 * VALUE is the argument's value or NULL if none (or called recursively)
3300 * Return 0 if they are identical types;
3301 * Otherwise, return an integer which corresponds to how compatible
3302 * PARM is to ARG. The higher the return value, the worse the match.
3303 * Generally the "bad" conversions are all uniformly assigned a 100. */
3306 rank_one_type (struct type *parm, struct type *arg, struct value *value)
3308 struct rank rank = {0,0};
3310 if (types_equal (parm, arg))
3311 return EXACT_MATCH_BADNESS;
3313 /* Resolve typedefs */
3314 if (TYPE_CODE (parm) == TYPE_CODE_TYPEDEF)
3315 parm = check_typedef (parm);
3316 if (TYPE_CODE (arg) == TYPE_CODE_TYPEDEF)
3317 arg = check_typedef (arg);
3319 /* See through references, since we can almost make non-references
3321 if (TYPE_CODE (arg) == TYPE_CODE_REF)
3322 return (sum_ranks (rank_one_type (parm, TYPE_TARGET_TYPE (arg), NULL),
3323 REFERENCE_CONVERSION_BADNESS));
3324 if (TYPE_CODE (parm) == TYPE_CODE_REF)
3325 return (sum_ranks (rank_one_type (TYPE_TARGET_TYPE (parm), arg, NULL),
3326 REFERENCE_CONVERSION_BADNESS));
3328 /* Debugging only. */
3329 fprintf_filtered (gdb_stderr,
3330 "------ Arg is %s [%d], parm is %s [%d]\n",
3331 TYPE_NAME (arg), TYPE_CODE (arg),
3332 TYPE_NAME (parm), TYPE_CODE (parm));
3334 /* x -> y means arg of type x being supplied for parameter of type y. */
3336 switch (TYPE_CODE (parm))
3339 switch (TYPE_CODE (arg))
3343 /* Allowed pointer conversions are:
3344 (a) pointer to void-pointer conversion. */
3345 if (TYPE_CODE (TYPE_TARGET_TYPE (parm)) == TYPE_CODE_VOID)
3346 return VOID_PTR_CONVERSION_BADNESS;
3348 /* (b) pointer to ancestor-pointer conversion. */
3349 rank.subrank = distance_to_ancestor (TYPE_TARGET_TYPE (parm),
3350 TYPE_TARGET_TYPE (arg),
3352 if (rank.subrank >= 0)
3353 return sum_ranks (BASE_PTR_CONVERSION_BADNESS, rank);
3355 return INCOMPATIBLE_TYPE_BADNESS;
3356 case TYPE_CODE_ARRAY:
3357 if (types_equal (TYPE_TARGET_TYPE (parm),
3358 TYPE_TARGET_TYPE (arg)))
3359 return EXACT_MATCH_BADNESS;
3360 return INCOMPATIBLE_TYPE_BADNESS;
3361 case TYPE_CODE_FUNC:
3362 return rank_one_type (TYPE_TARGET_TYPE (parm), arg, NULL);
3364 if (value != NULL && TYPE_CODE (value_type (value)) == TYPE_CODE_INT)
3366 if (value_as_long (value) == 0)
3368 /* Null pointer conversion: allow it to be cast to a pointer.
3369 [4.10.1 of C++ standard draft n3290] */
3370 return NULL_POINTER_CONVERSION_BADNESS;
3374 /* If type checking is disabled, allow the conversion. */
3375 if (!strict_type_checking)
3376 return NS_INTEGER_POINTER_CONVERSION_BADNESS;
3380 case TYPE_CODE_ENUM:
3381 case TYPE_CODE_FLAGS:
3382 case TYPE_CODE_CHAR:
3383 case TYPE_CODE_RANGE:
3384 case TYPE_CODE_BOOL:
3386 return INCOMPATIBLE_TYPE_BADNESS;
3388 case TYPE_CODE_ARRAY:
3389 switch (TYPE_CODE (arg))
3392 case TYPE_CODE_ARRAY:
3393 return rank_one_type (TYPE_TARGET_TYPE (parm),
3394 TYPE_TARGET_TYPE (arg), NULL);
3396 return INCOMPATIBLE_TYPE_BADNESS;
3398 case TYPE_CODE_FUNC:
3399 switch (TYPE_CODE (arg))
3401 case TYPE_CODE_PTR: /* funcptr -> func */
3402 return rank_one_type (parm, TYPE_TARGET_TYPE (arg), NULL);
3404 return INCOMPATIBLE_TYPE_BADNESS;
3407 switch (TYPE_CODE (arg))
3410 if (TYPE_LENGTH (arg) == TYPE_LENGTH (parm))
3412 /* Deal with signed, unsigned, and plain chars and
3413 signed and unsigned ints. */
3414 if (TYPE_NOSIGN (parm))
3416 /* This case only for character types. */
3417 if (TYPE_NOSIGN (arg))
3418 return EXACT_MATCH_BADNESS; /* plain char -> plain char */
3419 else /* signed/unsigned char -> plain char */
3420 return INTEGER_CONVERSION_BADNESS;
3422 else if (TYPE_UNSIGNED (parm))
3424 if (TYPE_UNSIGNED (arg))
3426 /* unsigned int -> unsigned int, or
3427 unsigned long -> unsigned long */
3428 if (integer_types_same_name_p (TYPE_NAME (parm),
3430 return EXACT_MATCH_BADNESS;
3431 else if (integer_types_same_name_p (TYPE_NAME (arg),
3433 && integer_types_same_name_p (TYPE_NAME (parm),
3435 /* unsigned int -> unsigned long */
3436 return INTEGER_PROMOTION_BADNESS;
3438 /* unsigned long -> unsigned int */
3439 return INTEGER_CONVERSION_BADNESS;
3443 if (integer_types_same_name_p (TYPE_NAME (arg),
3445 && integer_types_same_name_p (TYPE_NAME (parm),
3447 /* signed long -> unsigned int */
3448 return INTEGER_CONVERSION_BADNESS;
3450 /* signed int/long -> unsigned int/long */
3451 return INTEGER_CONVERSION_BADNESS;
3454 else if (!TYPE_NOSIGN (arg) && !TYPE_UNSIGNED (arg))
3456 if (integer_types_same_name_p (TYPE_NAME (parm),
3458 return EXACT_MATCH_BADNESS;
3459 else if (integer_types_same_name_p (TYPE_NAME (arg),
3461 && integer_types_same_name_p (TYPE_NAME (parm),
3463 return INTEGER_PROMOTION_BADNESS;
3465 return INTEGER_CONVERSION_BADNESS;
3468 return INTEGER_CONVERSION_BADNESS;
3470 else if (TYPE_LENGTH (arg) < TYPE_LENGTH (parm))
3471 return INTEGER_PROMOTION_BADNESS;
3473 return INTEGER_CONVERSION_BADNESS;
3474 case TYPE_CODE_ENUM:
3475 case TYPE_CODE_FLAGS:
3476 case TYPE_CODE_CHAR:
3477 case TYPE_CODE_RANGE:
3478 case TYPE_CODE_BOOL:
3479 if (TYPE_DECLARED_CLASS (arg))
3480 return INCOMPATIBLE_TYPE_BADNESS;
3481 return INTEGER_PROMOTION_BADNESS;
3483 return INT_FLOAT_CONVERSION_BADNESS;
3485 return NS_POINTER_CONVERSION_BADNESS;
3487 return INCOMPATIBLE_TYPE_BADNESS;
3490 case TYPE_CODE_ENUM:
3491 switch (TYPE_CODE (arg))
3494 case TYPE_CODE_CHAR:
3495 case TYPE_CODE_RANGE:
3496 case TYPE_CODE_BOOL:
3497 case TYPE_CODE_ENUM:
3498 if (TYPE_DECLARED_CLASS (parm) || TYPE_DECLARED_CLASS (arg))
3499 return INCOMPATIBLE_TYPE_BADNESS;
3500 return INTEGER_CONVERSION_BADNESS;
3502 return INT_FLOAT_CONVERSION_BADNESS;
3504 return INCOMPATIBLE_TYPE_BADNESS;
3507 case TYPE_CODE_CHAR:
3508 switch (TYPE_CODE (arg))
3510 case TYPE_CODE_RANGE:
3511 case TYPE_CODE_BOOL:
3512 case TYPE_CODE_ENUM:
3513 if (TYPE_DECLARED_CLASS (arg))
3514 return INCOMPATIBLE_TYPE_BADNESS;
3515 return INTEGER_CONVERSION_BADNESS;
3517 return INT_FLOAT_CONVERSION_BADNESS;
3519 if (TYPE_LENGTH (arg) > TYPE_LENGTH (parm))
3520 return INTEGER_CONVERSION_BADNESS;
3521 else if (TYPE_LENGTH (arg) < TYPE_LENGTH (parm))
3522 return INTEGER_PROMOTION_BADNESS;
3523 /* >>> !! else fall through !! <<< */
3524 case TYPE_CODE_CHAR:
3525 /* Deal with signed, unsigned, and plain chars for C++ and
3526 with int cases falling through from previous case. */
3527 if (TYPE_NOSIGN (parm))
3529 if (TYPE_NOSIGN (arg))
3530 return EXACT_MATCH_BADNESS;
3532 return INTEGER_CONVERSION_BADNESS;
3534 else if (TYPE_UNSIGNED (parm))
3536 if (TYPE_UNSIGNED (arg))
3537 return EXACT_MATCH_BADNESS;
3539 return INTEGER_PROMOTION_BADNESS;
3541 else if (!TYPE_NOSIGN (arg) && !TYPE_UNSIGNED (arg))
3542 return EXACT_MATCH_BADNESS;
3544 return INTEGER_CONVERSION_BADNESS;
3546 return INCOMPATIBLE_TYPE_BADNESS;
3549 case TYPE_CODE_RANGE:
3550 switch (TYPE_CODE (arg))
3553 case TYPE_CODE_CHAR:
3554 case TYPE_CODE_RANGE:
3555 case TYPE_CODE_BOOL:
3556 case TYPE_CODE_ENUM:
3557 return INTEGER_CONVERSION_BADNESS;
3559 return INT_FLOAT_CONVERSION_BADNESS;
3561 return INCOMPATIBLE_TYPE_BADNESS;
3564 case TYPE_CODE_BOOL:
3565 switch (TYPE_CODE (arg))
3567 /* n3290 draft, section 4.12.1 (conv.bool):
3569 "A prvalue of arithmetic, unscoped enumeration, pointer, or
3570 pointer to member type can be converted to a prvalue of type
3571 bool. A zero value, null pointer value, or null member pointer
3572 value is converted to false; any other value is converted to
3573 true. A prvalue of type std::nullptr_t can be converted to a
3574 prvalue of type bool; the resulting value is false." */
3576 case TYPE_CODE_CHAR:
3577 case TYPE_CODE_ENUM:
3579 case TYPE_CODE_MEMBERPTR:
3581 return BOOL_CONVERSION_BADNESS;
3582 case TYPE_CODE_RANGE:
3583 return INCOMPATIBLE_TYPE_BADNESS;
3584 case TYPE_CODE_BOOL:
3585 return EXACT_MATCH_BADNESS;
3587 return INCOMPATIBLE_TYPE_BADNESS;
3591 switch (TYPE_CODE (arg))
3594 if (TYPE_LENGTH (arg) < TYPE_LENGTH (parm))
3595 return FLOAT_PROMOTION_BADNESS;
3596 else if (TYPE_LENGTH (arg) == TYPE_LENGTH (parm))
3597 return EXACT_MATCH_BADNESS;
3599 return FLOAT_CONVERSION_BADNESS;
3601 case TYPE_CODE_BOOL:
3602 case TYPE_CODE_ENUM:
3603 case TYPE_CODE_RANGE:
3604 case TYPE_CODE_CHAR:
3605 return INT_FLOAT_CONVERSION_BADNESS;
3607 return INCOMPATIBLE_TYPE_BADNESS;
3610 case TYPE_CODE_COMPLEX:
3611 switch (TYPE_CODE (arg))
3612 { /* Strictly not needed for C++, but... */
3614 return FLOAT_PROMOTION_BADNESS;
3615 case TYPE_CODE_COMPLEX:
3616 return EXACT_MATCH_BADNESS;
3618 return INCOMPATIBLE_TYPE_BADNESS;
3621 case TYPE_CODE_STRUCT:
3622 switch (TYPE_CODE (arg))
3624 case TYPE_CODE_STRUCT:
3625 /* Check for derivation */
3626 rank.subrank = distance_to_ancestor (parm, arg, 0);
3627 if (rank.subrank >= 0)
3628 return sum_ranks (BASE_CONVERSION_BADNESS, rank);
3629 /* else fall through */
3631 return INCOMPATIBLE_TYPE_BADNESS;
3634 case TYPE_CODE_UNION:
3635 switch (TYPE_CODE (arg))
3637 case TYPE_CODE_UNION:
3639 return INCOMPATIBLE_TYPE_BADNESS;
3642 case TYPE_CODE_MEMBERPTR:
3643 switch (TYPE_CODE (arg))
3646 return INCOMPATIBLE_TYPE_BADNESS;
3649 case TYPE_CODE_METHOD:
3650 switch (TYPE_CODE (arg))
3654 return INCOMPATIBLE_TYPE_BADNESS;
3658 switch (TYPE_CODE (arg))
3662 return INCOMPATIBLE_TYPE_BADNESS;
3667 switch (TYPE_CODE (arg))
3671 return rank_one_type (TYPE_FIELD_TYPE (parm, 0),
3672 TYPE_FIELD_TYPE (arg, 0), NULL);
3674 return INCOMPATIBLE_TYPE_BADNESS;
3677 case TYPE_CODE_VOID:
3679 return INCOMPATIBLE_TYPE_BADNESS;
3680 } /* switch (TYPE_CODE (arg)) */
3683 /* End of functions for overload resolution. */
3685 /* Routines to pretty-print types. */
3688 print_bit_vector (B_TYPE *bits, int nbits)
3692 for (bitno = 0; bitno < nbits; bitno++)
3694 if ((bitno % 8) == 0)
3696 puts_filtered (" ");
3698 if (B_TST (bits, bitno))
3699 printf_filtered (("1"));
3701 printf_filtered (("0"));
3705 /* Note the first arg should be the "this" pointer, we may not want to
3706 include it since we may get into a infinitely recursive
3710 print_args (struct field *args, int nargs, int spaces)
3716 for (i = 0; i < nargs; i++)
3718 printfi_filtered (spaces, "[%d] name '%s'\n", i,
3719 args[i].name != NULL ? args[i].name : "<NULL>");
3720 recursive_dump_type (args[i].type, spaces + 2);
3726 field_is_static (struct field *f)
3728 /* "static" fields are the fields whose location is not relative
3729 to the address of the enclosing struct. It would be nice to
3730 have a dedicated flag that would be set for static fields when
3731 the type is being created. But in practice, checking the field
3732 loc_kind should give us an accurate answer. */
3733 return (FIELD_LOC_KIND (*f) == FIELD_LOC_KIND_PHYSNAME
3734 || FIELD_LOC_KIND (*f) == FIELD_LOC_KIND_PHYSADDR);
3738 dump_fn_fieldlists (struct type *type, int spaces)
3744 printfi_filtered (spaces, "fn_fieldlists ");
3745 gdb_print_host_address (TYPE_FN_FIELDLISTS (type), gdb_stdout);
3746 printf_filtered ("\n");
3747 for (method_idx = 0; method_idx < TYPE_NFN_FIELDS (type); method_idx++)
3749 f = TYPE_FN_FIELDLIST1 (type, method_idx);
3750 printfi_filtered (spaces + 2, "[%d] name '%s' (",
3752 TYPE_FN_FIELDLIST_NAME (type, method_idx));
3753 gdb_print_host_address (TYPE_FN_FIELDLIST_NAME (type, method_idx),
3755 printf_filtered (_(") length %d\n"),
3756 TYPE_FN_FIELDLIST_LENGTH (type, method_idx));
3757 for (overload_idx = 0;
3758 overload_idx < TYPE_FN_FIELDLIST_LENGTH (type, method_idx);
3761 printfi_filtered (spaces + 4, "[%d] physname '%s' (",
3763 TYPE_FN_FIELD_PHYSNAME (f, overload_idx));
3764 gdb_print_host_address (TYPE_FN_FIELD_PHYSNAME (f, overload_idx),
3766 printf_filtered (")\n");
3767 printfi_filtered (spaces + 8, "type ");
3768 gdb_print_host_address (TYPE_FN_FIELD_TYPE (f, overload_idx),
3770 printf_filtered ("\n");
3772 recursive_dump_type (TYPE_FN_FIELD_TYPE (f, overload_idx),
3775 printfi_filtered (spaces + 8, "args ");
3776 gdb_print_host_address (TYPE_FN_FIELD_ARGS (f, overload_idx),
3778 printf_filtered ("\n");
3779 print_args (TYPE_FN_FIELD_ARGS (f, overload_idx),
3780 TYPE_NFIELDS (TYPE_FN_FIELD_TYPE (f, overload_idx)),
3782 printfi_filtered (spaces + 8, "fcontext ");
3783 gdb_print_host_address (TYPE_FN_FIELD_FCONTEXT (f, overload_idx),
3785 printf_filtered ("\n");
3787 printfi_filtered (spaces + 8, "is_const %d\n",
3788 TYPE_FN_FIELD_CONST (f, overload_idx));
3789 printfi_filtered (spaces + 8, "is_volatile %d\n",
3790 TYPE_FN_FIELD_VOLATILE (f, overload_idx));
3791 printfi_filtered (spaces + 8, "is_private %d\n",
3792 TYPE_FN_FIELD_PRIVATE (f, overload_idx));
3793 printfi_filtered (spaces + 8, "is_protected %d\n",
3794 TYPE_FN_FIELD_PROTECTED (f, overload_idx));
3795 printfi_filtered (spaces + 8, "is_stub %d\n",
3796 TYPE_FN_FIELD_STUB (f, overload_idx));
3797 printfi_filtered (spaces + 8, "voffset %u\n",
3798 TYPE_FN_FIELD_VOFFSET (f, overload_idx));
3804 print_cplus_stuff (struct type *type, int spaces)
3806 printfi_filtered (spaces, "vptr_fieldno %d\n", TYPE_VPTR_FIELDNO (type));
3807 printfi_filtered (spaces, "vptr_basetype ");
3808 gdb_print_host_address (TYPE_VPTR_BASETYPE (type), gdb_stdout);
3809 puts_filtered ("\n");
3810 if (TYPE_VPTR_BASETYPE (type) != NULL)
3811 recursive_dump_type (TYPE_VPTR_BASETYPE (type), spaces + 2);
3813 printfi_filtered (spaces, "n_baseclasses %d\n",
3814 TYPE_N_BASECLASSES (type));
3815 printfi_filtered (spaces, "nfn_fields %d\n",
3816 TYPE_NFN_FIELDS (type));
3817 if (TYPE_N_BASECLASSES (type) > 0)
3819 printfi_filtered (spaces, "virtual_field_bits (%d bits at *",
3820 TYPE_N_BASECLASSES (type));
3821 gdb_print_host_address (TYPE_FIELD_VIRTUAL_BITS (type),
3823 printf_filtered (")");
3825 print_bit_vector (TYPE_FIELD_VIRTUAL_BITS (type),
3826 TYPE_N_BASECLASSES (type));
3827 puts_filtered ("\n");
3829 if (TYPE_NFIELDS (type) > 0)
3831 if (TYPE_FIELD_PRIVATE_BITS (type) != NULL)
3833 printfi_filtered (spaces,
3834 "private_field_bits (%d bits at *",
3835 TYPE_NFIELDS (type));
3836 gdb_print_host_address (TYPE_FIELD_PRIVATE_BITS (type),
3838 printf_filtered (")");
3839 print_bit_vector (TYPE_FIELD_PRIVATE_BITS (type),
3840 TYPE_NFIELDS (type));
3841 puts_filtered ("\n");
3843 if (TYPE_FIELD_PROTECTED_BITS (type) != NULL)
3845 printfi_filtered (spaces,
3846 "protected_field_bits (%d bits at *",
3847 TYPE_NFIELDS (type));
3848 gdb_print_host_address (TYPE_FIELD_PROTECTED_BITS (type),
3850 printf_filtered (")");
3851 print_bit_vector (TYPE_FIELD_PROTECTED_BITS (type),
3852 TYPE_NFIELDS (type));
3853 puts_filtered ("\n");
3856 if (TYPE_NFN_FIELDS (type) > 0)
3858 dump_fn_fieldlists (type, spaces);
3862 /* Print the contents of the TYPE's type_specific union, assuming that
3863 its type-specific kind is TYPE_SPECIFIC_GNAT_STUFF. */
3866 print_gnat_stuff (struct type *type, int spaces)
3868 struct type *descriptive_type = TYPE_DESCRIPTIVE_TYPE (type);
3870 recursive_dump_type (descriptive_type, spaces + 2);
3873 static struct obstack dont_print_type_obstack;
3876 recursive_dump_type (struct type *type, int spaces)
3881 obstack_begin (&dont_print_type_obstack, 0);
3883 if (TYPE_NFIELDS (type) > 0
3884 || (HAVE_CPLUS_STRUCT (type) && TYPE_NFN_FIELDS (type) > 0))
3886 struct type **first_dont_print
3887 = (struct type **) obstack_base (&dont_print_type_obstack);
3889 int i = (struct type **)
3890 obstack_next_free (&dont_print_type_obstack) - first_dont_print;
3894 if (type == first_dont_print[i])
3896 printfi_filtered (spaces, "type node ");
3897 gdb_print_host_address (type, gdb_stdout);
3898 printf_filtered (_(" <same as already seen type>\n"));
3903 obstack_ptr_grow (&dont_print_type_obstack, type);
3906 printfi_filtered (spaces, "type node ");
3907 gdb_print_host_address (type, gdb_stdout);
3908 printf_filtered ("\n");
3909 printfi_filtered (spaces, "name '%s' (",
3910 TYPE_NAME (type) ? TYPE_NAME (type) : "<NULL>");
3911 gdb_print_host_address (TYPE_NAME (type), gdb_stdout);
3912 printf_filtered (")\n");
3913 printfi_filtered (spaces, "tagname '%s' (",
3914 TYPE_TAG_NAME (type) ? TYPE_TAG_NAME (type) : "<NULL>");
3915 gdb_print_host_address (TYPE_TAG_NAME (type), gdb_stdout);
3916 printf_filtered (")\n");
3917 printfi_filtered (spaces, "code 0x%x ", TYPE_CODE (type));
3918 switch (TYPE_CODE (type))
3920 case TYPE_CODE_UNDEF:
3921 printf_filtered ("(TYPE_CODE_UNDEF)");
3924 printf_filtered ("(TYPE_CODE_PTR)");
3926 case TYPE_CODE_ARRAY:
3927 printf_filtered ("(TYPE_CODE_ARRAY)");
3929 case TYPE_CODE_STRUCT:
3930 printf_filtered ("(TYPE_CODE_STRUCT)");
3932 case TYPE_CODE_UNION:
3933 printf_filtered ("(TYPE_CODE_UNION)");
3935 case TYPE_CODE_ENUM:
3936 printf_filtered ("(TYPE_CODE_ENUM)");
3938 case TYPE_CODE_FLAGS:
3939 printf_filtered ("(TYPE_CODE_FLAGS)");
3941 case TYPE_CODE_FUNC:
3942 printf_filtered ("(TYPE_CODE_FUNC)");
3945 printf_filtered ("(TYPE_CODE_INT)");
3948 printf_filtered ("(TYPE_CODE_FLT)");
3950 case TYPE_CODE_VOID:
3951 printf_filtered ("(TYPE_CODE_VOID)");
3954 printf_filtered ("(TYPE_CODE_SET)");
3956 case TYPE_CODE_RANGE:
3957 printf_filtered ("(TYPE_CODE_RANGE)");
3959 case TYPE_CODE_STRING:
3960 printf_filtered ("(TYPE_CODE_STRING)");
3962 case TYPE_CODE_ERROR:
3963 printf_filtered ("(TYPE_CODE_ERROR)");
3965 case TYPE_CODE_MEMBERPTR:
3966 printf_filtered ("(TYPE_CODE_MEMBERPTR)");
3968 case TYPE_CODE_METHODPTR:
3969 printf_filtered ("(TYPE_CODE_METHODPTR)");
3971 case TYPE_CODE_METHOD:
3972 printf_filtered ("(TYPE_CODE_METHOD)");
3975 printf_filtered ("(TYPE_CODE_REF)");
3977 case TYPE_CODE_CHAR:
3978 printf_filtered ("(TYPE_CODE_CHAR)");
3980 case TYPE_CODE_BOOL:
3981 printf_filtered ("(TYPE_CODE_BOOL)");
3983 case TYPE_CODE_COMPLEX:
3984 printf_filtered ("(TYPE_CODE_COMPLEX)");
3986 case TYPE_CODE_TYPEDEF:
3987 printf_filtered ("(TYPE_CODE_TYPEDEF)");
3989 case TYPE_CODE_NAMESPACE:
3990 printf_filtered ("(TYPE_CODE_NAMESPACE)");
3993 printf_filtered ("(UNKNOWN TYPE CODE)");
3996 puts_filtered ("\n");
3997 printfi_filtered (spaces, "length %d\n", TYPE_LENGTH (type));
3998 if (TYPE_OBJFILE_OWNED (type))
4000 printfi_filtered (spaces, "objfile ");
4001 gdb_print_host_address (TYPE_OWNER (type).objfile, gdb_stdout);
4005 printfi_filtered (spaces, "gdbarch ");
4006 gdb_print_host_address (TYPE_OWNER (type).gdbarch, gdb_stdout);
4008 printf_filtered ("\n");
4009 printfi_filtered (spaces, "target_type ");
4010 gdb_print_host_address (TYPE_TARGET_TYPE (type), gdb_stdout);
4011 printf_filtered ("\n");
4012 if (TYPE_TARGET_TYPE (type) != NULL)
4014 recursive_dump_type (TYPE_TARGET_TYPE (type), spaces + 2);
4016 printfi_filtered (spaces, "pointer_type ");
4017 gdb_print_host_address (TYPE_POINTER_TYPE (type), gdb_stdout);
4018 printf_filtered ("\n");
4019 printfi_filtered (spaces, "reference_type ");
4020 gdb_print_host_address (TYPE_REFERENCE_TYPE (type), gdb_stdout);
4021 printf_filtered ("\n");
4022 printfi_filtered (spaces, "type_chain ");
4023 gdb_print_host_address (TYPE_CHAIN (type), gdb_stdout);
4024 printf_filtered ("\n");
4025 printfi_filtered (spaces, "instance_flags 0x%x",
4026 TYPE_INSTANCE_FLAGS (type));
4027 if (TYPE_CONST (type))
4029 puts_filtered (" TYPE_FLAG_CONST");
4031 if (TYPE_VOLATILE (type))
4033 puts_filtered (" TYPE_FLAG_VOLATILE");
4035 if (TYPE_CODE_SPACE (type))
4037 puts_filtered (" TYPE_FLAG_CODE_SPACE");
4039 if (TYPE_DATA_SPACE (type))
4041 puts_filtered (" TYPE_FLAG_DATA_SPACE");
4043 if (TYPE_ADDRESS_CLASS_1 (type))
4045 puts_filtered (" TYPE_FLAG_ADDRESS_CLASS_1");
4047 if (TYPE_ADDRESS_CLASS_2 (type))
4049 puts_filtered (" TYPE_FLAG_ADDRESS_CLASS_2");
4051 if (TYPE_RESTRICT (type))
4053 puts_filtered (" TYPE_FLAG_RESTRICT");
4055 if (TYPE_ATOMIC (type))
4057 puts_filtered (" TYPE_FLAG_ATOMIC");
4059 puts_filtered ("\n");
4061 printfi_filtered (spaces, "flags");
4062 if (TYPE_UNSIGNED (type))
4064 puts_filtered (" TYPE_FLAG_UNSIGNED");
4066 if (TYPE_NOSIGN (type))
4068 puts_filtered (" TYPE_FLAG_NOSIGN");
4070 if (TYPE_STUB (type))
4072 puts_filtered (" TYPE_FLAG_STUB");
4074 if (TYPE_TARGET_STUB (type))
4076 puts_filtered (" TYPE_FLAG_TARGET_STUB");
4078 if (TYPE_STATIC (type))
4080 puts_filtered (" TYPE_FLAG_STATIC");
4082 if (TYPE_PROTOTYPED (type))
4084 puts_filtered (" TYPE_FLAG_PROTOTYPED");
4086 if (TYPE_INCOMPLETE (type))
4088 puts_filtered (" TYPE_FLAG_INCOMPLETE");
4090 if (TYPE_VARARGS (type))
4092 puts_filtered (" TYPE_FLAG_VARARGS");
4094 /* This is used for things like AltiVec registers on ppc. Gcc emits
4095 an attribute for the array type, which tells whether or not we
4096 have a vector, instead of a regular array. */
4097 if (TYPE_VECTOR (type))
4099 puts_filtered (" TYPE_FLAG_VECTOR");
4101 if (TYPE_FIXED_INSTANCE (type))
4103 puts_filtered (" TYPE_FIXED_INSTANCE");
4105 if (TYPE_STUB_SUPPORTED (type))
4107 puts_filtered (" TYPE_STUB_SUPPORTED");
4109 if (TYPE_NOTTEXT (type))
4111 puts_filtered (" TYPE_NOTTEXT");
4113 puts_filtered ("\n");
4114 printfi_filtered (spaces, "nfields %d ", TYPE_NFIELDS (type));
4115 gdb_print_host_address (TYPE_FIELDS (type), gdb_stdout);
4116 puts_filtered ("\n");
4117 for (idx = 0; idx < TYPE_NFIELDS (type); idx++)
4119 if (TYPE_CODE (type) == TYPE_CODE_ENUM)
4120 printfi_filtered (spaces + 2,
4121 "[%d] enumval %s type ",
4122 idx, plongest (TYPE_FIELD_ENUMVAL (type, idx)));
4124 printfi_filtered (spaces + 2,
4125 "[%d] bitpos %d bitsize %d type ",
4126 idx, TYPE_FIELD_BITPOS (type, idx),
4127 TYPE_FIELD_BITSIZE (type, idx));
4128 gdb_print_host_address (TYPE_FIELD_TYPE (type, idx), gdb_stdout);
4129 printf_filtered (" name '%s' (",
4130 TYPE_FIELD_NAME (type, idx) != NULL
4131 ? TYPE_FIELD_NAME (type, idx)
4133 gdb_print_host_address (TYPE_FIELD_NAME (type, idx), gdb_stdout);
4134 printf_filtered (")\n");
4135 if (TYPE_FIELD_TYPE (type, idx) != NULL)
4137 recursive_dump_type (TYPE_FIELD_TYPE (type, idx), spaces + 4);
4140 if (TYPE_CODE (type) == TYPE_CODE_RANGE)
4142 printfi_filtered (spaces, "low %s%s high %s%s\n",
4143 plongest (TYPE_LOW_BOUND (type)),
4144 TYPE_LOW_BOUND_UNDEFINED (type) ? " (undefined)" : "",
4145 plongest (TYPE_HIGH_BOUND (type)),
4146 TYPE_HIGH_BOUND_UNDEFINED (type)
4147 ? " (undefined)" : "");
4150 switch (TYPE_SPECIFIC_FIELD (type))
4152 case TYPE_SPECIFIC_CPLUS_STUFF:
4153 printfi_filtered (spaces, "cplus_stuff ");
4154 gdb_print_host_address (TYPE_CPLUS_SPECIFIC (type),
4156 puts_filtered ("\n");
4157 print_cplus_stuff (type, spaces);
4160 case TYPE_SPECIFIC_GNAT_STUFF:
4161 printfi_filtered (spaces, "gnat_stuff ");
4162 gdb_print_host_address (TYPE_GNAT_SPECIFIC (type), gdb_stdout);
4163 puts_filtered ("\n");
4164 print_gnat_stuff (type, spaces);
4167 case TYPE_SPECIFIC_FLOATFORMAT:
4168 printfi_filtered (spaces, "floatformat ");
4169 if (TYPE_FLOATFORMAT (type) == NULL)
4170 puts_filtered ("(null)");
4173 puts_filtered ("{ ");
4174 if (TYPE_FLOATFORMAT (type)[0] == NULL
4175 || TYPE_FLOATFORMAT (type)[0]->name == NULL)
4176 puts_filtered ("(null)");
4178 puts_filtered (TYPE_FLOATFORMAT (type)[0]->name);
4180 puts_filtered (", ");
4181 if (TYPE_FLOATFORMAT (type)[1] == NULL
4182 || TYPE_FLOATFORMAT (type)[1]->name == NULL)
4183 puts_filtered ("(null)");
4185 puts_filtered (TYPE_FLOATFORMAT (type)[1]->name);
4187 puts_filtered (" }");
4189 puts_filtered ("\n");
4192 case TYPE_SPECIFIC_FUNC:
4193 printfi_filtered (spaces, "calling_convention %d\n",
4194 TYPE_CALLING_CONVENTION (type));
4195 /* tail_call_list is not printed. */
4198 case TYPE_SPECIFIC_SELF_TYPE:
4199 printfi_filtered (spaces, "self_type ");
4200 gdb_print_host_address (TYPE_SELF_TYPE (type), gdb_stdout);
4201 puts_filtered ("\n");
4206 obstack_free (&dont_print_type_obstack, NULL);
4209 /* Trivial helpers for the libiberty hash table, for mapping one
4214 struct type *old, *newobj;
4218 type_pair_hash (const void *item)
4220 const struct type_pair *pair = item;
4222 return htab_hash_pointer (pair->old);
4226 type_pair_eq (const void *item_lhs, const void *item_rhs)
4228 const struct type_pair *lhs = item_lhs, *rhs = item_rhs;
4230 return lhs->old == rhs->old;
4233 /* Allocate the hash table used by copy_type_recursive to walk
4234 types without duplicates. We use OBJFILE's obstack, because
4235 OBJFILE is about to be deleted. */
4238 create_copied_types_hash (struct objfile *objfile)
4240 return htab_create_alloc_ex (1, type_pair_hash, type_pair_eq,
4241 NULL, &objfile->objfile_obstack,
4242 hashtab_obstack_allocate,
4243 dummy_obstack_deallocate);
4246 /* Recursively copy (deep copy) a dynamic attribute list of a type. */
4248 static struct dynamic_prop_list *
4249 copy_dynamic_prop_list (struct obstack *objfile_obstack,
4250 struct dynamic_prop_list *list)
4252 struct dynamic_prop_list *copy = list;
4253 struct dynamic_prop_list **node_ptr = ©
4255 while (*node_ptr != NULL)
4257 struct dynamic_prop_list *node_copy;
4259 node_copy = obstack_copy (objfile_obstack, *node_ptr,
4260 sizeof (struct dynamic_prop_list));
4261 node_copy->prop = (*node_ptr)->prop;
4262 *node_ptr = node_copy;
4264 node_ptr = &node_copy->next;
4270 /* Recursively copy (deep copy) TYPE, if it is associated with
4271 OBJFILE. Return a new type allocated using malloc, a saved type if
4272 we have already visited TYPE (using COPIED_TYPES), or TYPE if it is
4273 not associated with OBJFILE. */
4276 copy_type_recursive (struct objfile *objfile,
4278 htab_t copied_types)
4280 struct type_pair *stored, pair;
4282 struct type *new_type;
4284 if (! TYPE_OBJFILE_OWNED (type))
4287 /* This type shouldn't be pointing to any types in other objfiles;
4288 if it did, the type might disappear unexpectedly. */
4289 gdb_assert (TYPE_OBJFILE (type) == objfile);
4292 slot = htab_find_slot (copied_types, &pair, INSERT);
4294 return ((struct type_pair *) *slot)->newobj;
4296 new_type = alloc_type_arch (get_type_arch (type));
4298 /* We must add the new type to the hash table immediately, in case
4299 we encounter this type again during a recursive call below. */
4301 = obstack_alloc (&objfile->objfile_obstack, sizeof (struct type_pair));
4303 stored->newobj = new_type;
4306 /* Copy the common fields of types. For the main type, we simply
4307 copy the entire thing and then update specific fields as needed. */
4308 *TYPE_MAIN_TYPE (new_type) = *TYPE_MAIN_TYPE (type);
4309 TYPE_OBJFILE_OWNED (new_type) = 0;
4310 TYPE_OWNER (new_type).gdbarch = get_type_arch (type);
4312 if (TYPE_NAME (type))
4313 TYPE_NAME (new_type) = xstrdup (TYPE_NAME (type));
4314 if (TYPE_TAG_NAME (type))
4315 TYPE_TAG_NAME (new_type) = xstrdup (TYPE_TAG_NAME (type));
4317 TYPE_INSTANCE_FLAGS (new_type) = TYPE_INSTANCE_FLAGS (type);
4318 TYPE_LENGTH (new_type) = TYPE_LENGTH (type);
4320 /* Copy the fields. */
4321 if (TYPE_NFIELDS (type))
4325 nfields = TYPE_NFIELDS (type);
4326 TYPE_FIELDS (new_type) = XCNEWVEC (struct field, nfields);
4327 for (i = 0; i < nfields; i++)
4329 TYPE_FIELD_ARTIFICIAL (new_type, i) =
4330 TYPE_FIELD_ARTIFICIAL (type, i);
4331 TYPE_FIELD_BITSIZE (new_type, i) = TYPE_FIELD_BITSIZE (type, i);
4332 if (TYPE_FIELD_TYPE (type, i))
4333 TYPE_FIELD_TYPE (new_type, i)
4334 = copy_type_recursive (objfile, TYPE_FIELD_TYPE (type, i),
4336 if (TYPE_FIELD_NAME (type, i))
4337 TYPE_FIELD_NAME (new_type, i) =
4338 xstrdup (TYPE_FIELD_NAME (type, i));
4339 switch (TYPE_FIELD_LOC_KIND (type, i))
4341 case FIELD_LOC_KIND_BITPOS:
4342 SET_FIELD_BITPOS (TYPE_FIELD (new_type, i),
4343 TYPE_FIELD_BITPOS (type, i));
4345 case FIELD_LOC_KIND_ENUMVAL:
4346 SET_FIELD_ENUMVAL (TYPE_FIELD (new_type, i),
4347 TYPE_FIELD_ENUMVAL (type, i));
4349 case FIELD_LOC_KIND_PHYSADDR:
4350 SET_FIELD_PHYSADDR (TYPE_FIELD (new_type, i),
4351 TYPE_FIELD_STATIC_PHYSADDR (type, i));
4353 case FIELD_LOC_KIND_PHYSNAME:
4354 SET_FIELD_PHYSNAME (TYPE_FIELD (new_type, i),
4355 xstrdup (TYPE_FIELD_STATIC_PHYSNAME (type,
4359 internal_error (__FILE__, __LINE__,
4360 _("Unexpected type field location kind: %d"),
4361 TYPE_FIELD_LOC_KIND (type, i));
4366 /* For range types, copy the bounds information. */
4367 if (TYPE_CODE (type) == TYPE_CODE_RANGE)
4369 TYPE_RANGE_DATA (new_type) = xmalloc (sizeof (struct range_bounds));
4370 *TYPE_RANGE_DATA (new_type) = *TYPE_RANGE_DATA (type);
4373 if (TYPE_DYN_PROP_LIST (type) != NULL)
4374 TYPE_DYN_PROP_LIST (new_type)
4375 = copy_dynamic_prop_list (&objfile->objfile_obstack,
4376 TYPE_DYN_PROP_LIST (type));
4379 /* Copy pointers to other types. */
4380 if (TYPE_TARGET_TYPE (type))
4381 TYPE_TARGET_TYPE (new_type) =
4382 copy_type_recursive (objfile,
4383 TYPE_TARGET_TYPE (type),
4386 /* Maybe copy the type_specific bits.
4388 NOTE drow/2005-12-09: We do not copy the C++-specific bits like
4389 base classes and methods. There's no fundamental reason why we
4390 can't, but at the moment it is not needed. */
4392 switch (TYPE_SPECIFIC_FIELD (type))
4394 case TYPE_SPECIFIC_NONE:
4396 case TYPE_SPECIFIC_FUNC:
4397 INIT_FUNC_SPECIFIC (new_type);
4398 TYPE_CALLING_CONVENTION (new_type) = TYPE_CALLING_CONVENTION (type);
4399 TYPE_NO_RETURN (new_type) = TYPE_NO_RETURN (type);
4400 TYPE_TAIL_CALL_LIST (new_type) = NULL;
4402 case TYPE_SPECIFIC_FLOATFORMAT:
4403 TYPE_FLOATFORMAT (new_type) = TYPE_FLOATFORMAT (type);
4405 case TYPE_SPECIFIC_CPLUS_STUFF:
4406 INIT_CPLUS_SPECIFIC (new_type);
4408 case TYPE_SPECIFIC_GNAT_STUFF:
4409 INIT_GNAT_SPECIFIC (new_type);
4411 case TYPE_SPECIFIC_SELF_TYPE:
4412 set_type_self_type (new_type,
4413 copy_type_recursive (objfile, TYPE_SELF_TYPE (type),
4417 gdb_assert_not_reached ("bad type_specific_kind");
4423 /* Make a copy of the given TYPE, except that the pointer & reference
4424 types are not preserved.
4426 This function assumes that the given type has an associated objfile.
4427 This objfile is used to allocate the new type. */
4430 copy_type (const struct type *type)
4432 struct type *new_type;
4434 gdb_assert (TYPE_OBJFILE_OWNED (type));
4436 new_type = alloc_type_copy (type);
4437 TYPE_INSTANCE_FLAGS (new_type) = TYPE_INSTANCE_FLAGS (type);
4438 TYPE_LENGTH (new_type) = TYPE_LENGTH (type);
4439 memcpy (TYPE_MAIN_TYPE (new_type), TYPE_MAIN_TYPE (type),
4440 sizeof (struct main_type));
4441 if (TYPE_DYN_PROP_LIST (type) != NULL)
4442 TYPE_DYN_PROP_LIST (new_type)
4443 = copy_dynamic_prop_list (&TYPE_OBJFILE (type) -> objfile_obstack,
4444 TYPE_DYN_PROP_LIST (type));
4449 /* Helper functions to initialize architecture-specific types. */
4451 /* Allocate a type structure associated with GDBARCH and set its
4452 CODE, LENGTH, and NAME fields. */
4455 arch_type (struct gdbarch *gdbarch,
4456 enum type_code code, int length, char *name)
4460 type = alloc_type_arch (gdbarch);
4461 TYPE_CODE (type) = code;
4462 TYPE_LENGTH (type) = length;
4465 TYPE_NAME (type) = xstrdup (name);
4470 /* Allocate a TYPE_CODE_INT type structure associated with GDBARCH.
4471 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
4472 the type's TYPE_UNSIGNED flag. NAME is the type name. */
4475 arch_integer_type (struct gdbarch *gdbarch,
4476 int bit, int unsigned_p, char *name)
4480 t = arch_type (gdbarch, TYPE_CODE_INT, bit / TARGET_CHAR_BIT, name);
4482 TYPE_UNSIGNED (t) = 1;
4483 if (name && strcmp (name, "char") == 0)
4484 TYPE_NOSIGN (t) = 1;
4489 /* Allocate a TYPE_CODE_CHAR type structure associated with GDBARCH.
4490 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
4491 the type's TYPE_UNSIGNED flag. NAME is the type name. */
4494 arch_character_type (struct gdbarch *gdbarch,
4495 int bit, int unsigned_p, char *name)
4499 t = arch_type (gdbarch, TYPE_CODE_CHAR, bit / TARGET_CHAR_BIT, name);
4501 TYPE_UNSIGNED (t) = 1;
4506 /* Allocate a TYPE_CODE_BOOL type structure associated with GDBARCH.
4507 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
4508 the type's TYPE_UNSIGNED flag. NAME is the type name. */
4511 arch_boolean_type (struct gdbarch *gdbarch,
4512 int bit, int unsigned_p, char *name)
4516 t = arch_type (gdbarch, TYPE_CODE_BOOL, bit / TARGET_CHAR_BIT, name);
4518 TYPE_UNSIGNED (t) = 1;
4523 /* Allocate a TYPE_CODE_FLT type structure associated with GDBARCH.
4524 BIT is the type size in bits; if BIT equals -1, the size is
4525 determined by the floatformat. NAME is the type name. Set the
4526 TYPE_FLOATFORMAT from FLOATFORMATS. */
4529 arch_float_type (struct gdbarch *gdbarch,
4530 int bit, char *name, const struct floatformat **floatformats)
4536 gdb_assert (floatformats != NULL);
4537 gdb_assert (floatformats[0] != NULL && floatformats[1] != NULL);
4538 bit = floatformats[0]->totalsize;
4540 gdb_assert (bit >= 0);
4542 t = arch_type (gdbarch, TYPE_CODE_FLT, bit / TARGET_CHAR_BIT, name);
4543 TYPE_FLOATFORMAT (t) = floatformats;
4547 /* Allocate a TYPE_CODE_COMPLEX type structure associated with GDBARCH.
4548 NAME is the type name. TARGET_TYPE is the component float type. */
4551 arch_complex_type (struct gdbarch *gdbarch,
4552 char *name, struct type *target_type)
4556 t = arch_type (gdbarch, TYPE_CODE_COMPLEX,
4557 2 * TYPE_LENGTH (target_type), name);
4558 TYPE_TARGET_TYPE (t) = target_type;
4562 /* Allocate a TYPE_CODE_FLAGS type structure associated with GDBARCH.
4563 NAME is the type name. LENGTH is the size of the flag word in bytes. */
4566 arch_flags_type (struct gdbarch *gdbarch, char *name, int length)
4568 int nfields = length * TARGET_CHAR_BIT;
4571 type = arch_type (gdbarch, TYPE_CODE_FLAGS, length, name);
4572 TYPE_UNSIGNED (type) = 1;
4573 TYPE_NFIELDS (type) = nfields;
4574 TYPE_FIELDS (type) = TYPE_ZALLOC (type, nfields * sizeof (struct field));
4579 /* Add field to TYPE_CODE_FLAGS type TYPE to indicate the bit at
4580 position BITPOS is called NAME. */
4583 append_flags_type_flag (struct type *type, int bitpos, char *name)
4585 gdb_assert (TYPE_CODE (type) == TYPE_CODE_FLAGS);
4586 gdb_assert (bitpos < TYPE_NFIELDS (type));
4587 gdb_assert (bitpos >= 0);
4591 TYPE_FIELD_NAME (type, bitpos) = xstrdup (name);
4592 SET_FIELD_BITPOS (TYPE_FIELD (type, bitpos), bitpos);
4596 /* Don't show this field to the user. */
4597 SET_FIELD_BITPOS (TYPE_FIELD (type, bitpos), -1);
4601 /* Allocate a TYPE_CODE_STRUCT or TYPE_CODE_UNION type structure (as
4602 specified by CODE) associated with GDBARCH. NAME is the type name. */
4605 arch_composite_type (struct gdbarch *gdbarch, char *name, enum type_code code)
4609 gdb_assert (code == TYPE_CODE_STRUCT || code == TYPE_CODE_UNION);
4610 t = arch_type (gdbarch, code, 0, NULL);
4611 TYPE_TAG_NAME (t) = name;
4612 INIT_CPLUS_SPECIFIC (t);
4616 /* Add new field with name NAME and type FIELD to composite type T.
4617 Do not set the field's position or adjust the type's length;
4618 the caller should do so. Return the new field. */
4621 append_composite_type_field_raw (struct type *t, char *name,
4626 TYPE_NFIELDS (t) = TYPE_NFIELDS (t) + 1;
4627 TYPE_FIELDS (t) = xrealloc (TYPE_FIELDS (t),
4628 sizeof (struct field) * TYPE_NFIELDS (t));
4629 f = &(TYPE_FIELDS (t)[TYPE_NFIELDS (t) - 1]);
4630 memset (f, 0, sizeof f[0]);
4631 FIELD_TYPE (f[0]) = field;
4632 FIELD_NAME (f[0]) = name;
4636 /* Add new field with name NAME and type FIELD to composite type T.
4637 ALIGNMENT (if non-zero) specifies the minimum field alignment. */
4640 append_composite_type_field_aligned (struct type *t, char *name,
4641 struct type *field, int alignment)
4643 struct field *f = append_composite_type_field_raw (t, name, field);
4645 if (TYPE_CODE (t) == TYPE_CODE_UNION)
4647 if (TYPE_LENGTH (t) < TYPE_LENGTH (field))
4648 TYPE_LENGTH (t) = TYPE_LENGTH (field);
4650 else if (TYPE_CODE (t) == TYPE_CODE_STRUCT)
4652 TYPE_LENGTH (t) = TYPE_LENGTH (t) + TYPE_LENGTH (field);
4653 if (TYPE_NFIELDS (t) > 1)
4655 SET_FIELD_BITPOS (f[0],
4656 (FIELD_BITPOS (f[-1])
4657 + (TYPE_LENGTH (FIELD_TYPE (f[-1]))
4658 * TARGET_CHAR_BIT)));
4664 alignment *= TARGET_CHAR_BIT;
4665 left = FIELD_BITPOS (f[0]) % alignment;
4669 SET_FIELD_BITPOS (f[0], FIELD_BITPOS (f[0]) + (alignment - left));
4670 TYPE_LENGTH (t) += (alignment - left) / TARGET_CHAR_BIT;
4677 /* Add new field with name NAME and type FIELD to composite type T. */
4680 append_composite_type_field (struct type *t, char *name,
4683 append_composite_type_field_aligned (t, name, field, 0);
4686 static struct gdbarch_data *gdbtypes_data;
4688 const struct builtin_type *
4689 builtin_type (struct gdbarch *gdbarch)
4691 return gdbarch_data (gdbarch, gdbtypes_data);
4695 gdbtypes_post_init (struct gdbarch *gdbarch)
4697 struct builtin_type *builtin_type
4698 = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct builtin_type);
4701 builtin_type->builtin_void
4702 = arch_type (gdbarch, TYPE_CODE_VOID, 1, "void");
4703 builtin_type->builtin_char
4704 = arch_integer_type (gdbarch, TARGET_CHAR_BIT,
4705 !gdbarch_char_signed (gdbarch), "char");
4706 builtin_type->builtin_signed_char
4707 = arch_integer_type (gdbarch, TARGET_CHAR_BIT,
4709 builtin_type->builtin_unsigned_char
4710 = arch_integer_type (gdbarch, TARGET_CHAR_BIT,
4711 1, "unsigned char");
4712 builtin_type->builtin_short
4713 = arch_integer_type (gdbarch, gdbarch_short_bit (gdbarch),
4715 builtin_type->builtin_unsigned_short
4716 = arch_integer_type (gdbarch, gdbarch_short_bit (gdbarch),
4717 1, "unsigned short");
4718 builtin_type->builtin_int
4719 = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch),
4721 builtin_type->builtin_unsigned_int
4722 = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch),
4724 builtin_type->builtin_long
4725 = arch_integer_type (gdbarch, gdbarch_long_bit (gdbarch),
4727 builtin_type->builtin_unsigned_long
4728 = arch_integer_type (gdbarch, gdbarch_long_bit (gdbarch),
4729 1, "unsigned long");
4730 builtin_type->builtin_long_long
4731 = arch_integer_type (gdbarch, gdbarch_long_long_bit (gdbarch),
4733 builtin_type->builtin_unsigned_long_long
4734 = arch_integer_type (gdbarch, gdbarch_long_long_bit (gdbarch),
4735 1, "unsigned long long");
4736 builtin_type->builtin_float
4737 = arch_float_type (gdbarch, gdbarch_float_bit (gdbarch),
4738 "float", gdbarch_float_format (gdbarch));
4739 builtin_type->builtin_double
4740 = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch),
4741 "double", gdbarch_double_format (gdbarch));
4742 builtin_type->builtin_long_double
4743 = arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch),
4744 "long double", gdbarch_long_double_format (gdbarch));
4745 builtin_type->builtin_complex
4746 = arch_complex_type (gdbarch, "complex",
4747 builtin_type->builtin_float);
4748 builtin_type->builtin_double_complex
4749 = arch_complex_type (gdbarch, "double complex",
4750 builtin_type->builtin_double);
4751 builtin_type->builtin_string
4752 = arch_type (gdbarch, TYPE_CODE_STRING, 1, "string");
4753 builtin_type->builtin_bool
4754 = arch_type (gdbarch, TYPE_CODE_BOOL, 1, "bool");
4756 /* The following three are about decimal floating point types, which
4757 are 32-bits, 64-bits and 128-bits respectively. */
4758 builtin_type->builtin_decfloat
4759 = arch_type (gdbarch, TYPE_CODE_DECFLOAT, 32 / 8, "_Decimal32");
4760 builtin_type->builtin_decdouble
4761 = arch_type (gdbarch, TYPE_CODE_DECFLOAT, 64 / 8, "_Decimal64");
4762 builtin_type->builtin_declong
4763 = arch_type (gdbarch, TYPE_CODE_DECFLOAT, 128 / 8, "_Decimal128");
4765 /* "True" character types. */
4766 builtin_type->builtin_true_char
4767 = arch_character_type (gdbarch, TARGET_CHAR_BIT, 0, "true character");
4768 builtin_type->builtin_true_unsigned_char
4769 = arch_character_type (gdbarch, TARGET_CHAR_BIT, 1, "true character");
4771 /* Fixed-size integer types. */
4772 builtin_type->builtin_int0
4773 = arch_integer_type (gdbarch, 0, 0, "int0_t");
4774 builtin_type->builtin_int8
4775 = arch_integer_type (gdbarch, 8, 0, "int8_t");
4776 builtin_type->builtin_uint8
4777 = arch_integer_type (gdbarch, 8, 1, "uint8_t");
4778 builtin_type->builtin_int16
4779 = arch_integer_type (gdbarch, 16, 0, "int16_t");
4780 builtin_type->builtin_uint16
4781 = arch_integer_type (gdbarch, 16, 1, "uint16_t");
4782 builtin_type->builtin_int32
4783 = arch_integer_type (gdbarch, 32, 0, "int32_t");
4784 builtin_type->builtin_uint32
4785 = arch_integer_type (gdbarch, 32, 1, "uint32_t");
4786 builtin_type->builtin_int64
4787 = arch_integer_type (gdbarch, 64, 0, "int64_t");
4788 builtin_type->builtin_uint64
4789 = arch_integer_type (gdbarch, 64, 1, "uint64_t");
4790 builtin_type->builtin_int128
4791 = arch_integer_type (gdbarch, 128, 0, "int128_t");
4792 builtin_type->builtin_uint128
4793 = arch_integer_type (gdbarch, 128, 1, "uint128_t");
4794 TYPE_INSTANCE_FLAGS (builtin_type->builtin_int8) |=
4795 TYPE_INSTANCE_FLAG_NOTTEXT;
4796 TYPE_INSTANCE_FLAGS (builtin_type->builtin_uint8) |=
4797 TYPE_INSTANCE_FLAG_NOTTEXT;
4799 /* Wide character types. */
4800 builtin_type->builtin_char16
4801 = arch_integer_type (gdbarch, 16, 0, "char16_t");
4802 builtin_type->builtin_char32
4803 = arch_integer_type (gdbarch, 32, 0, "char32_t");
4806 /* Default data/code pointer types. */
4807 builtin_type->builtin_data_ptr
4808 = lookup_pointer_type (builtin_type->builtin_void);
4809 builtin_type->builtin_func_ptr
4810 = lookup_pointer_type (lookup_function_type (builtin_type->builtin_void));
4811 builtin_type->builtin_func_func
4812 = lookup_function_type (builtin_type->builtin_func_ptr);
4814 /* This type represents a GDB internal function. */
4815 builtin_type->internal_fn
4816 = arch_type (gdbarch, TYPE_CODE_INTERNAL_FUNCTION, 0,
4817 "<internal function>");
4819 /* This type represents an xmethod. */
4820 builtin_type->xmethod
4821 = arch_type (gdbarch, TYPE_CODE_XMETHOD, 0, "<xmethod>");
4823 return builtin_type;
4826 /* This set of objfile-based types is intended to be used by symbol
4827 readers as basic types. */
4829 static const struct objfile_data *objfile_type_data;
4831 const struct objfile_type *
4832 objfile_type (struct objfile *objfile)
4834 struct gdbarch *gdbarch;
4835 struct objfile_type *objfile_type
4836 = objfile_data (objfile, objfile_type_data);
4839 return objfile_type;
4841 objfile_type = OBSTACK_CALLOC (&objfile->objfile_obstack,
4842 1, struct objfile_type);
4844 /* Use the objfile architecture to determine basic type properties. */
4845 gdbarch = get_objfile_arch (objfile);
4848 objfile_type->builtin_void
4849 = init_type (TYPE_CODE_VOID, 1,
4853 objfile_type->builtin_char
4854 = init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
4856 | (gdbarch_char_signed (gdbarch) ? 0 : TYPE_FLAG_UNSIGNED)),
4858 objfile_type->builtin_signed_char
4859 = init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
4861 "signed char", objfile);
4862 objfile_type->builtin_unsigned_char
4863 = init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
4865 "unsigned char", objfile);
4866 objfile_type->builtin_short
4867 = init_type (TYPE_CODE_INT,
4868 gdbarch_short_bit (gdbarch) / TARGET_CHAR_BIT,
4869 0, "short", objfile);
4870 objfile_type->builtin_unsigned_short
4871 = init_type (TYPE_CODE_INT,
4872 gdbarch_short_bit (gdbarch) / TARGET_CHAR_BIT,
4873 TYPE_FLAG_UNSIGNED, "unsigned short", objfile);
4874 objfile_type->builtin_int
4875 = init_type (TYPE_CODE_INT,
4876 gdbarch_int_bit (gdbarch) / TARGET_CHAR_BIT,
4878 objfile_type->builtin_unsigned_int
4879 = init_type (TYPE_CODE_INT,
4880 gdbarch_int_bit (gdbarch) / TARGET_CHAR_BIT,
4881 TYPE_FLAG_UNSIGNED, "unsigned int", objfile);
4882 objfile_type->builtin_long
4883 = init_type (TYPE_CODE_INT,
4884 gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT,
4885 0, "long", objfile);
4886 objfile_type->builtin_unsigned_long
4887 = init_type (TYPE_CODE_INT,
4888 gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT,
4889 TYPE_FLAG_UNSIGNED, "unsigned long", objfile);
4890 objfile_type->builtin_long_long
4891 = init_type (TYPE_CODE_INT,
4892 gdbarch_long_long_bit (gdbarch) / TARGET_CHAR_BIT,
4893 0, "long long", objfile);
4894 objfile_type->builtin_unsigned_long_long
4895 = init_type (TYPE_CODE_INT,
4896 gdbarch_long_long_bit (gdbarch) / TARGET_CHAR_BIT,
4897 TYPE_FLAG_UNSIGNED, "unsigned long long", objfile);
4899 objfile_type->builtin_float
4900 = init_type (TYPE_CODE_FLT,
4901 gdbarch_float_bit (gdbarch) / TARGET_CHAR_BIT,
4902 0, "float", objfile);
4903 TYPE_FLOATFORMAT (objfile_type->builtin_float)
4904 = gdbarch_float_format (gdbarch);
4905 objfile_type->builtin_double
4906 = init_type (TYPE_CODE_FLT,
4907 gdbarch_double_bit (gdbarch) / TARGET_CHAR_BIT,
4908 0, "double", objfile);
4909 TYPE_FLOATFORMAT (objfile_type->builtin_double)
4910 = gdbarch_double_format (gdbarch);
4911 objfile_type->builtin_long_double
4912 = init_type (TYPE_CODE_FLT,
4913 gdbarch_long_double_bit (gdbarch) / TARGET_CHAR_BIT,
4914 0, "long double", objfile);
4915 TYPE_FLOATFORMAT (objfile_type->builtin_long_double)
4916 = gdbarch_long_double_format (gdbarch);
4918 /* This type represents a type that was unrecognized in symbol read-in. */
4919 objfile_type->builtin_error
4920 = init_type (TYPE_CODE_ERROR, 0, 0, "<unknown type>", objfile);
4922 /* The following set of types is used for symbols with no
4923 debug information. */
4924 objfile_type->nodebug_text_symbol
4925 = init_type (TYPE_CODE_FUNC, 1, 0,
4926 "<text variable, no debug info>", objfile);
4927 TYPE_TARGET_TYPE (objfile_type->nodebug_text_symbol)
4928 = objfile_type->builtin_int;
4929 objfile_type->nodebug_text_gnu_ifunc_symbol
4930 = init_type (TYPE_CODE_FUNC, 1, TYPE_FLAG_GNU_IFUNC,
4931 "<text gnu-indirect-function variable, no debug info>",
4933 TYPE_TARGET_TYPE (objfile_type->nodebug_text_gnu_ifunc_symbol)
4934 = objfile_type->nodebug_text_symbol;
4935 objfile_type->nodebug_got_plt_symbol
4936 = init_type (TYPE_CODE_PTR, gdbarch_addr_bit (gdbarch) / 8, 0,
4937 "<text from jump slot in .got.plt, no debug info>",
4939 TYPE_TARGET_TYPE (objfile_type->nodebug_got_plt_symbol)
4940 = objfile_type->nodebug_text_symbol;
4941 objfile_type->nodebug_data_symbol
4942 = init_type (TYPE_CODE_INT,
4943 gdbarch_int_bit (gdbarch) / HOST_CHAR_BIT, 0,
4944 "<data variable, no debug info>", objfile);
4945 objfile_type->nodebug_unknown_symbol
4946 = init_type (TYPE_CODE_INT, 1, 0,
4947 "<variable (not text or data), no debug info>", objfile);
4948 objfile_type->nodebug_tls_symbol
4949 = init_type (TYPE_CODE_INT,
4950 gdbarch_int_bit (gdbarch) / HOST_CHAR_BIT, 0,
4951 "<thread local variable, no debug info>", objfile);
4953 /* NOTE: on some targets, addresses and pointers are not necessarily
4957 - gdb's `struct type' always describes the target's
4959 - gdb's `struct value' objects should always hold values in
4961 - gdb's CORE_ADDR values are addresses in the unified virtual
4962 address space that the assembler and linker work with. Thus,
4963 since target_read_memory takes a CORE_ADDR as an argument, it
4964 can access any memory on the target, even if the processor has
4965 separate code and data address spaces.
4967 In this context, objfile_type->builtin_core_addr is a bit odd:
4968 it's a target type for a value the target will never see. It's
4969 only used to hold the values of (typeless) linker symbols, which
4970 are indeed in the unified virtual address space. */
4972 objfile_type->builtin_core_addr
4973 = init_type (TYPE_CODE_INT,
4974 gdbarch_addr_bit (gdbarch) / 8,
4975 TYPE_FLAG_UNSIGNED, "__CORE_ADDR", objfile);
4977 set_objfile_data (objfile, objfile_type_data, objfile_type);
4978 return objfile_type;
4981 extern initialize_file_ftype _initialize_gdbtypes;
4984 _initialize_gdbtypes (void)
4986 gdbtypes_data = gdbarch_data_register_post_init (gdbtypes_post_init);
4987 objfile_type_data = register_objfile_data ();
4989 add_setshow_zuinteger_cmd ("overload", no_class, &overload_debug,
4990 _("Set debugging of C++ overloading."),
4991 _("Show debugging of C++ overloading."),
4992 _("When enabled, ranking of the "
4993 "functions is displayed."),
4995 show_overload_debug,
4996 &setdebuglist, &showdebuglist);
4998 /* Add user knob for controlling resolution of opaque types. */
4999 add_setshow_boolean_cmd ("opaque-type-resolution", class_support,
5000 &opaque_type_resolution,
5001 _("Set resolution of opaque struct/class/union"
5002 " types (if set before loading symbols)."),
5003 _("Show resolution of opaque struct/class/union"
5004 " types (if set before loading symbols)."),
5006 show_opaque_type_resolution,
5007 &setlist, &showlist);
5009 /* Add an option to permit non-strict type checking. */
5010 add_setshow_boolean_cmd ("type", class_support,
5011 &strict_type_checking,
5012 _("Set strict type checking."),
5013 _("Show strict type checking."),
5015 show_strict_type_checking,
5016 &setchecklist, &showchecklist);