1 /* Support routines for manipulating internal types for GDB.
3 Copyright (C) 1992-2014 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 "exceptions.h"
38 #include "cp-support.h"
40 #include "dwarf2loc.h"
43 /* Initialize BADNESS constants. */
45 const struct rank LENGTH_MISMATCH_BADNESS = {100,0};
47 const struct rank TOO_FEW_PARAMS_BADNESS = {100,0};
48 const struct rank INCOMPATIBLE_TYPE_BADNESS = {100,0};
50 const struct rank EXACT_MATCH_BADNESS = {0,0};
52 const struct rank INTEGER_PROMOTION_BADNESS = {1,0};
53 const struct rank FLOAT_PROMOTION_BADNESS = {1,0};
54 const struct rank BASE_PTR_CONVERSION_BADNESS = {1,0};
55 const struct rank INTEGER_CONVERSION_BADNESS = {2,0};
56 const struct rank FLOAT_CONVERSION_BADNESS = {2,0};
57 const struct rank INT_FLOAT_CONVERSION_BADNESS = {2,0};
58 const struct rank VOID_PTR_CONVERSION_BADNESS = {2,0};
59 const struct rank BOOL_CONVERSION_BADNESS = {3,0};
60 const struct rank BASE_CONVERSION_BADNESS = {2,0};
61 const struct rank REFERENCE_CONVERSION_BADNESS = {2,0};
62 const struct rank NULL_POINTER_CONVERSION_BADNESS = {2,0};
63 const struct rank NS_POINTER_CONVERSION_BADNESS = {10,0};
64 const struct rank NS_INTEGER_POINTER_CONVERSION_BADNESS = {3,0};
66 /* Floatformat pairs. */
67 const struct floatformat *floatformats_ieee_half[BFD_ENDIAN_UNKNOWN] = {
68 &floatformat_ieee_half_big,
69 &floatformat_ieee_half_little
71 const struct floatformat *floatformats_ieee_single[BFD_ENDIAN_UNKNOWN] = {
72 &floatformat_ieee_single_big,
73 &floatformat_ieee_single_little
75 const struct floatformat *floatformats_ieee_double[BFD_ENDIAN_UNKNOWN] = {
76 &floatformat_ieee_double_big,
77 &floatformat_ieee_double_little
79 const struct floatformat *floatformats_ieee_double_littlebyte_bigword[BFD_ENDIAN_UNKNOWN] = {
80 &floatformat_ieee_double_big,
81 &floatformat_ieee_double_littlebyte_bigword
83 const struct floatformat *floatformats_i387_ext[BFD_ENDIAN_UNKNOWN] = {
84 &floatformat_i387_ext,
87 const struct floatformat *floatformats_m68881_ext[BFD_ENDIAN_UNKNOWN] = {
88 &floatformat_m68881_ext,
89 &floatformat_m68881_ext
91 const struct floatformat *floatformats_arm_ext[BFD_ENDIAN_UNKNOWN] = {
92 &floatformat_arm_ext_big,
93 &floatformat_arm_ext_littlebyte_bigword
95 const struct floatformat *floatformats_ia64_spill[BFD_ENDIAN_UNKNOWN] = {
96 &floatformat_ia64_spill_big,
97 &floatformat_ia64_spill_little
99 const struct floatformat *floatformats_ia64_quad[BFD_ENDIAN_UNKNOWN] = {
100 &floatformat_ia64_quad_big,
101 &floatformat_ia64_quad_little
103 const struct floatformat *floatformats_vax_f[BFD_ENDIAN_UNKNOWN] = {
107 const struct floatformat *floatformats_vax_d[BFD_ENDIAN_UNKNOWN] = {
111 const struct floatformat *floatformats_ibm_long_double[BFD_ENDIAN_UNKNOWN] = {
112 &floatformat_ibm_long_double_big,
113 &floatformat_ibm_long_double_little
116 /* Should opaque types be resolved? */
118 static int opaque_type_resolution = 1;
120 /* A flag to enable printing of debugging information of C++
123 unsigned int overload_debug = 0;
125 /* A flag to enable strict type checking. */
127 static int strict_type_checking = 1;
129 /* A function to show whether opaque types are resolved. */
132 show_opaque_type_resolution (struct ui_file *file, int from_tty,
133 struct cmd_list_element *c,
136 fprintf_filtered (file, _("Resolution of opaque struct/class/union types "
137 "(if set before loading symbols) is %s.\n"),
141 /* A function to show whether C++ overload debugging is enabled. */
144 show_overload_debug (struct ui_file *file, int from_tty,
145 struct cmd_list_element *c, const char *value)
147 fprintf_filtered (file, _("Debugging of C++ overloading is %s.\n"),
151 /* A function to show the status of strict type checking. */
154 show_strict_type_checking (struct ui_file *file, int from_tty,
155 struct cmd_list_element *c, const char *value)
157 fprintf_filtered (file, _("Strict type checking is %s.\n"), value);
161 /* Allocate a new OBJFILE-associated type structure and fill it
162 with some defaults. Space for the type structure is allocated
163 on the objfile's objfile_obstack. */
166 alloc_type (struct objfile *objfile)
170 gdb_assert (objfile != NULL);
172 /* Alloc the structure and start off with all fields zeroed. */
173 type = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct type);
174 TYPE_MAIN_TYPE (type) = OBSTACK_ZALLOC (&objfile->objfile_obstack,
176 OBJSTAT (objfile, n_types++);
178 TYPE_OBJFILE_OWNED (type) = 1;
179 TYPE_OWNER (type).objfile = objfile;
181 /* Initialize the fields that might not be zero. */
183 TYPE_CODE (type) = TYPE_CODE_UNDEF;
184 TYPE_VPTR_FIELDNO (type) = -1;
185 TYPE_CHAIN (type) = type; /* Chain back to itself. */
190 /* Allocate a new GDBARCH-associated type structure and fill it
191 with some defaults. Space for the type structure is allocated
195 alloc_type_arch (struct gdbarch *gdbarch)
199 gdb_assert (gdbarch != NULL);
201 /* Alloc the structure and start off with all fields zeroed. */
203 type = XCNEW (struct type);
204 TYPE_MAIN_TYPE (type) = XCNEW (struct main_type);
206 TYPE_OBJFILE_OWNED (type) = 0;
207 TYPE_OWNER (type).gdbarch = gdbarch;
209 /* Initialize the fields that might not be zero. */
211 TYPE_CODE (type) = TYPE_CODE_UNDEF;
212 TYPE_VPTR_FIELDNO (type) = -1;
213 TYPE_CHAIN (type) = type; /* Chain back to itself. */
218 /* If TYPE is objfile-associated, allocate a new type structure
219 associated with the same objfile. If TYPE is gdbarch-associated,
220 allocate a new type structure associated with the same gdbarch. */
223 alloc_type_copy (const struct type *type)
225 if (TYPE_OBJFILE_OWNED (type))
226 return alloc_type (TYPE_OWNER (type).objfile);
228 return alloc_type_arch (TYPE_OWNER (type).gdbarch);
231 /* If TYPE is gdbarch-associated, return that architecture.
232 If TYPE is objfile-associated, return that objfile's architecture. */
235 get_type_arch (const struct type *type)
237 if (TYPE_OBJFILE_OWNED (type))
238 return get_objfile_arch (TYPE_OWNER (type).objfile);
240 return TYPE_OWNER (type).gdbarch;
243 /* See gdbtypes.h. */
246 get_target_type (struct type *type)
250 type = TYPE_TARGET_TYPE (type);
252 type = check_typedef (type);
258 /* Alloc a new type instance structure, fill it with some defaults,
259 and point it at OLDTYPE. Allocate the new type instance from the
260 same place as OLDTYPE. */
263 alloc_type_instance (struct type *oldtype)
267 /* Allocate the structure. */
269 if (! TYPE_OBJFILE_OWNED (oldtype))
270 type = XCNEW (struct type);
272 type = OBSTACK_ZALLOC (&TYPE_OBJFILE (oldtype)->objfile_obstack,
275 TYPE_MAIN_TYPE (type) = TYPE_MAIN_TYPE (oldtype);
277 TYPE_CHAIN (type) = type; /* Chain back to itself for now. */
282 /* Clear all remnants of the previous type at TYPE, in preparation for
283 replacing it with something else. Preserve owner information. */
286 smash_type (struct type *type)
288 int objfile_owned = TYPE_OBJFILE_OWNED (type);
289 union type_owner owner = TYPE_OWNER (type);
291 memset (TYPE_MAIN_TYPE (type), 0, sizeof (struct main_type));
293 /* Restore owner information. */
294 TYPE_OBJFILE_OWNED (type) = objfile_owned;
295 TYPE_OWNER (type) = owner;
297 /* For now, delete the rings. */
298 TYPE_CHAIN (type) = type;
300 /* For now, leave the pointer/reference types alone. */
303 /* Lookup a pointer to a type TYPE. TYPEPTR, if nonzero, points
304 to a pointer to memory where the pointer type should be stored.
305 If *TYPEPTR is zero, update it to point to the pointer type we return.
306 We allocate new memory if needed. */
309 make_pointer_type (struct type *type, struct type **typeptr)
311 struct type *ntype; /* New type */
314 ntype = TYPE_POINTER_TYPE (type);
319 return ntype; /* Don't care about alloc,
320 and have new type. */
321 else if (*typeptr == 0)
323 *typeptr = ntype; /* Tracking alloc, and have new type. */
328 if (typeptr == 0 || *typeptr == 0) /* We'll need to allocate one. */
330 ntype = alloc_type_copy (type);
334 else /* We have storage, but need to reset it. */
337 chain = TYPE_CHAIN (ntype);
339 TYPE_CHAIN (ntype) = chain;
342 TYPE_TARGET_TYPE (ntype) = type;
343 TYPE_POINTER_TYPE (type) = ntype;
345 /* FIXME! Assumes the machine has only one representation for pointers! */
348 = gdbarch_ptr_bit (get_type_arch (type)) / TARGET_CHAR_BIT;
349 TYPE_CODE (ntype) = TYPE_CODE_PTR;
351 /* Mark pointers as unsigned. The target converts between pointers
352 and addresses (CORE_ADDRs) using gdbarch_pointer_to_address and
353 gdbarch_address_to_pointer. */
354 TYPE_UNSIGNED (ntype) = 1;
356 /* Update the length of all the other variants of this type. */
357 chain = TYPE_CHAIN (ntype);
358 while (chain != ntype)
360 TYPE_LENGTH (chain) = TYPE_LENGTH (ntype);
361 chain = TYPE_CHAIN (chain);
367 /* Given a type TYPE, return a type of pointers to that type.
368 May need to construct such a type if this is the first use. */
371 lookup_pointer_type (struct type *type)
373 return make_pointer_type (type, (struct type **) 0);
376 /* Lookup a C++ `reference' to a type TYPE. TYPEPTR, if nonzero,
377 points to a pointer to memory where the reference type should be
378 stored. If *TYPEPTR is zero, update it to point to the reference
379 type we return. We allocate new memory if needed. */
382 make_reference_type (struct type *type, struct type **typeptr)
384 struct type *ntype; /* New type */
387 ntype = TYPE_REFERENCE_TYPE (type);
392 return ntype; /* Don't care about alloc,
393 and have new type. */
394 else if (*typeptr == 0)
396 *typeptr = ntype; /* Tracking alloc, and have new type. */
401 if (typeptr == 0 || *typeptr == 0) /* We'll need to allocate one. */
403 ntype = alloc_type_copy (type);
407 else /* We have storage, but need to reset it. */
410 chain = TYPE_CHAIN (ntype);
412 TYPE_CHAIN (ntype) = chain;
415 TYPE_TARGET_TYPE (ntype) = type;
416 TYPE_REFERENCE_TYPE (type) = ntype;
418 /* FIXME! Assume the machine has only one representation for
419 references, and that it matches the (only) representation for
422 TYPE_LENGTH (ntype) =
423 gdbarch_ptr_bit (get_type_arch (type)) / TARGET_CHAR_BIT;
424 TYPE_CODE (ntype) = TYPE_CODE_REF;
426 if (!TYPE_REFERENCE_TYPE (type)) /* Remember it, if don't have one. */
427 TYPE_REFERENCE_TYPE (type) = ntype;
429 /* Update the length of all the other variants of this type. */
430 chain = TYPE_CHAIN (ntype);
431 while (chain != ntype)
433 TYPE_LENGTH (chain) = TYPE_LENGTH (ntype);
434 chain = TYPE_CHAIN (chain);
440 /* Same as above, but caller doesn't care about memory allocation
444 lookup_reference_type (struct type *type)
446 return make_reference_type (type, (struct type **) 0);
449 /* Lookup a function type that returns type TYPE. TYPEPTR, if
450 nonzero, points to a pointer to memory where the function type
451 should be stored. If *TYPEPTR is zero, update it to point to the
452 function type we return. We allocate new memory if needed. */
455 make_function_type (struct type *type, struct type **typeptr)
457 struct type *ntype; /* New type */
459 if (typeptr == 0 || *typeptr == 0) /* We'll need to allocate one. */
461 ntype = alloc_type_copy (type);
465 else /* We have storage, but need to reset it. */
471 TYPE_TARGET_TYPE (ntype) = type;
473 TYPE_LENGTH (ntype) = 1;
474 TYPE_CODE (ntype) = TYPE_CODE_FUNC;
476 INIT_FUNC_SPECIFIC (ntype);
481 /* Given a type TYPE, return a type of functions that return that type.
482 May need to construct such a type if this is the first use. */
485 lookup_function_type (struct type *type)
487 return make_function_type (type, (struct type **) 0);
490 /* Given a type TYPE and argument types, return the appropriate
491 function type. If the final type in PARAM_TYPES is NULL, make a
495 lookup_function_type_with_arguments (struct type *type,
497 struct type **param_types)
499 struct type *fn = make_function_type (type, (struct type **) 0);
504 if (param_types[nparams - 1] == NULL)
507 TYPE_VARARGS (fn) = 1;
509 else if (TYPE_CODE (check_typedef (param_types[nparams - 1]))
513 /* Caller should have ensured this. */
514 gdb_assert (nparams == 0);
515 TYPE_PROTOTYPED (fn) = 1;
519 TYPE_NFIELDS (fn) = nparams;
520 TYPE_FIELDS (fn) = TYPE_ZALLOC (fn, nparams * sizeof (struct field));
521 for (i = 0; i < nparams; ++i)
522 TYPE_FIELD_TYPE (fn, i) = param_types[i];
527 /* Identify address space identifier by name --
528 return the integer flag defined in gdbtypes.h. */
531 address_space_name_to_int (struct gdbarch *gdbarch, char *space_identifier)
535 /* Check for known address space delimiters. */
536 if (!strcmp (space_identifier, "code"))
537 return TYPE_INSTANCE_FLAG_CODE_SPACE;
538 else if (!strcmp (space_identifier, "data"))
539 return TYPE_INSTANCE_FLAG_DATA_SPACE;
540 else if (gdbarch_address_class_name_to_type_flags_p (gdbarch)
541 && gdbarch_address_class_name_to_type_flags (gdbarch,
546 error (_("Unknown address space specifier: \"%s\""), space_identifier);
549 /* Identify address space identifier by integer flag as defined in
550 gdbtypes.h -- return the string version of the adress space name. */
553 address_space_int_to_name (struct gdbarch *gdbarch, int space_flag)
555 if (space_flag & TYPE_INSTANCE_FLAG_CODE_SPACE)
557 else if (space_flag & TYPE_INSTANCE_FLAG_DATA_SPACE)
559 else if ((space_flag & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL)
560 && gdbarch_address_class_type_flags_to_name_p (gdbarch))
561 return gdbarch_address_class_type_flags_to_name (gdbarch, space_flag);
566 /* Create a new type with instance flags NEW_FLAGS, based on TYPE.
568 If STORAGE is non-NULL, create the new type instance there.
569 STORAGE must be in the same obstack as TYPE. */
572 make_qualified_type (struct type *type, int new_flags,
573 struct type *storage)
580 if (TYPE_INSTANCE_FLAGS (ntype) == new_flags)
582 ntype = TYPE_CHAIN (ntype);
584 while (ntype != type);
586 /* Create a new type instance. */
588 ntype = alloc_type_instance (type);
591 /* If STORAGE was provided, it had better be in the same objfile
592 as TYPE. Otherwise, we can't link it into TYPE's cv chain:
593 if one objfile is freed and the other kept, we'd have
594 dangling pointers. */
595 gdb_assert (TYPE_OBJFILE (type) == TYPE_OBJFILE (storage));
598 TYPE_MAIN_TYPE (ntype) = TYPE_MAIN_TYPE (type);
599 TYPE_CHAIN (ntype) = ntype;
602 /* Pointers or references to the original type are not relevant to
604 TYPE_POINTER_TYPE (ntype) = (struct type *) 0;
605 TYPE_REFERENCE_TYPE (ntype) = (struct type *) 0;
607 /* Chain the new qualified type to the old type. */
608 TYPE_CHAIN (ntype) = TYPE_CHAIN (type);
609 TYPE_CHAIN (type) = ntype;
611 /* Now set the instance flags and return the new type. */
612 TYPE_INSTANCE_FLAGS (ntype) = new_flags;
614 /* Set length of new type to that of the original type. */
615 TYPE_LENGTH (ntype) = TYPE_LENGTH (type);
620 /* Make an address-space-delimited variant of a type -- a type that
621 is identical to the one supplied except that it has an address
622 space attribute attached to it (such as "code" or "data").
624 The space attributes "code" and "data" are for Harvard
625 architectures. The address space attributes are for architectures
626 which have alternately sized pointers or pointers with alternate
630 make_type_with_address_space (struct type *type, int space_flag)
632 int new_flags = ((TYPE_INSTANCE_FLAGS (type)
633 & ~(TYPE_INSTANCE_FLAG_CODE_SPACE
634 | TYPE_INSTANCE_FLAG_DATA_SPACE
635 | TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL))
638 return make_qualified_type (type, new_flags, NULL);
641 /* Make a "c-v" variant of a type -- a type that is identical to the
642 one supplied except that it may have const or volatile attributes
643 CNST is a flag for setting the const attribute
644 VOLTL is a flag for setting the volatile attribute
645 TYPE is the base type whose variant we are creating.
647 If TYPEPTR and *TYPEPTR are non-zero, then *TYPEPTR points to
648 storage to hold the new qualified type; *TYPEPTR and TYPE must be
649 in the same objfile. Otherwise, allocate fresh memory for the new
650 type whereever TYPE lives. If TYPEPTR is non-zero, set it to the
651 new type we construct. */
654 make_cv_type (int cnst, int voltl,
656 struct type **typeptr)
658 struct type *ntype; /* New type */
660 int new_flags = (TYPE_INSTANCE_FLAGS (type)
661 & ~(TYPE_INSTANCE_FLAG_CONST
662 | TYPE_INSTANCE_FLAG_VOLATILE));
665 new_flags |= TYPE_INSTANCE_FLAG_CONST;
668 new_flags |= TYPE_INSTANCE_FLAG_VOLATILE;
670 if (typeptr && *typeptr != NULL)
672 /* TYPE and *TYPEPTR must be in the same objfile. We can't have
673 a C-V variant chain that threads across objfiles: if one
674 objfile gets freed, then the other has a broken C-V chain.
676 This code used to try to copy over the main type from TYPE to
677 *TYPEPTR if they were in different objfiles, but that's
678 wrong, too: TYPE may have a field list or member function
679 lists, which refer to types of their own, etc. etc. The
680 whole shebang would need to be copied over recursively; you
681 can't have inter-objfile pointers. The only thing to do is
682 to leave stub types as stub types, and look them up afresh by
683 name each time you encounter them. */
684 gdb_assert (TYPE_OBJFILE (*typeptr) == TYPE_OBJFILE (type));
687 ntype = make_qualified_type (type, new_flags,
688 typeptr ? *typeptr : NULL);
696 /* Make a 'restrict'-qualified version of TYPE. */
699 make_restrict_type (struct type *type)
701 return make_qualified_type (type,
702 (TYPE_INSTANCE_FLAGS (type)
703 | TYPE_INSTANCE_FLAG_RESTRICT),
707 /* Replace the contents of ntype with the type *type. This changes the
708 contents, rather than the pointer for TYPE_MAIN_TYPE (ntype); thus
709 the changes are propogated to all types in the TYPE_CHAIN.
711 In order to build recursive types, it's inevitable that we'll need
712 to update types in place --- but this sort of indiscriminate
713 smashing is ugly, and needs to be replaced with something more
714 controlled. TYPE_MAIN_TYPE is a step in this direction; it's not
715 clear if more steps are needed. */
718 replace_type (struct type *ntype, struct type *type)
722 /* These two types had better be in the same objfile. Otherwise,
723 the assignment of one type's main type structure to the other
724 will produce a type with references to objects (names; field
725 lists; etc.) allocated on an objfile other than its own. */
726 gdb_assert (TYPE_OBJFILE (ntype) == TYPE_OBJFILE (ntype));
728 *TYPE_MAIN_TYPE (ntype) = *TYPE_MAIN_TYPE (type);
730 /* The type length is not a part of the main type. Update it for
731 each type on the variant chain. */
735 /* Assert that this element of the chain has no address-class bits
736 set in its flags. Such type variants might have type lengths
737 which are supposed to be different from the non-address-class
738 variants. This assertion shouldn't ever be triggered because
739 symbol readers which do construct address-class variants don't
740 call replace_type(). */
741 gdb_assert (TYPE_ADDRESS_CLASS_ALL (chain) == 0);
743 TYPE_LENGTH (chain) = TYPE_LENGTH (type);
744 chain = TYPE_CHAIN (chain);
746 while (ntype != chain);
748 /* Assert that the two types have equivalent instance qualifiers.
749 This should be true for at least all of our debug readers. */
750 gdb_assert (TYPE_INSTANCE_FLAGS (ntype) == TYPE_INSTANCE_FLAGS (type));
753 /* Implement direct support for MEMBER_TYPE in GNU C++.
754 May need to construct such a type if this is the first use.
755 The TYPE is the type of the member. The DOMAIN is the type
756 of the aggregate that the member belongs to. */
759 lookup_memberptr_type (struct type *type, struct type *domain)
763 mtype = alloc_type_copy (type);
764 smash_to_memberptr_type (mtype, domain, type);
768 /* Return a pointer-to-method type, for a method of type TO_TYPE. */
771 lookup_methodptr_type (struct type *to_type)
775 mtype = alloc_type_copy (to_type);
776 smash_to_methodptr_type (mtype, to_type);
780 /* Allocate a stub method whose return type is TYPE. This apparently
781 happens for speed of symbol reading, since parsing out the
782 arguments to the method is cpu-intensive, the way we are doing it.
783 So, we will fill in arguments later. This always returns a fresh
787 allocate_stub_method (struct type *type)
791 mtype = alloc_type_copy (type);
792 TYPE_CODE (mtype) = TYPE_CODE_METHOD;
793 TYPE_LENGTH (mtype) = 1;
794 TYPE_STUB (mtype) = 1;
795 TYPE_TARGET_TYPE (mtype) = type;
796 /* _DOMAIN_TYPE (mtype) = unknown yet */
800 /* Create a range type with a dynamic range from LOW_BOUND to
801 HIGH_BOUND, inclusive. See create_range_type for further details. */
804 create_range_type (struct type *result_type, struct type *index_type,
805 const struct dynamic_prop *low_bound,
806 const struct dynamic_prop *high_bound)
808 if (result_type == NULL)
809 result_type = alloc_type_copy (index_type);
810 TYPE_CODE (result_type) = TYPE_CODE_RANGE;
811 TYPE_TARGET_TYPE (result_type) = index_type;
812 if (TYPE_STUB (index_type))
813 TYPE_TARGET_STUB (result_type) = 1;
815 TYPE_LENGTH (result_type) = TYPE_LENGTH (check_typedef (index_type));
817 TYPE_RANGE_DATA (result_type) = (struct range_bounds *)
818 TYPE_ZALLOC (result_type, sizeof (struct range_bounds));
819 TYPE_RANGE_DATA (result_type)->low = *low_bound;
820 TYPE_RANGE_DATA (result_type)->high = *high_bound;
822 if (low_bound->kind == PROP_CONST && low_bound->data.const_val >= 0)
823 TYPE_UNSIGNED (result_type) = 1;
828 /* Create a range type using either a blank type supplied in
829 RESULT_TYPE, or creating a new type, inheriting the objfile from
832 Indices will be of type INDEX_TYPE, and will range from LOW_BOUND
833 to HIGH_BOUND, inclusive.
835 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
836 sure it is TYPE_CODE_UNDEF before we bash it into a range type? */
839 create_static_range_type (struct type *result_type, struct type *index_type,
840 LONGEST low_bound, LONGEST high_bound)
842 struct dynamic_prop low, high;
844 low.kind = PROP_CONST;
845 low.data.const_val = low_bound;
847 high.kind = PROP_CONST;
848 high.data.const_val = high_bound;
850 result_type = create_range_type (result_type, index_type, &low, &high);
855 /* Predicate tests whether BOUNDS are static. Returns 1 if all bounds values
856 are static, otherwise returns 0. */
859 has_static_range (const struct range_bounds *bounds)
861 return (bounds->low.kind == PROP_CONST
862 && bounds->high.kind == PROP_CONST);
866 /* Set *LOWP and *HIGHP to the lower and upper bounds of discrete type
867 TYPE. Return 1 if type is a range type, 0 if it is discrete (and
868 bounds will fit in LONGEST), or -1 otherwise. */
871 get_discrete_bounds (struct type *type, LONGEST *lowp, LONGEST *highp)
873 CHECK_TYPEDEF (type);
874 switch (TYPE_CODE (type))
876 case TYPE_CODE_RANGE:
877 *lowp = TYPE_LOW_BOUND (type);
878 *highp = TYPE_HIGH_BOUND (type);
881 if (TYPE_NFIELDS (type) > 0)
883 /* The enums may not be sorted by value, so search all
887 *lowp = *highp = TYPE_FIELD_ENUMVAL (type, 0);
888 for (i = 0; i < TYPE_NFIELDS (type); i++)
890 if (TYPE_FIELD_ENUMVAL (type, i) < *lowp)
891 *lowp = TYPE_FIELD_ENUMVAL (type, i);
892 if (TYPE_FIELD_ENUMVAL (type, i) > *highp)
893 *highp = TYPE_FIELD_ENUMVAL (type, i);
896 /* Set unsigned indicator if warranted. */
899 TYPE_UNSIGNED (type) = 1;
913 if (TYPE_LENGTH (type) > sizeof (LONGEST)) /* Too big */
915 if (!TYPE_UNSIGNED (type))
917 *lowp = -(1 << (TYPE_LENGTH (type) * TARGET_CHAR_BIT - 1));
921 /* ... fall through for unsigned ints ... */
924 /* This round-about calculation is to avoid shifting by
925 TYPE_LENGTH (type) * TARGET_CHAR_BIT, which will not work
926 if TYPE_LENGTH (type) == sizeof (LONGEST). */
927 *highp = 1 << (TYPE_LENGTH (type) * TARGET_CHAR_BIT - 1);
928 *highp = (*highp - 1) | *highp;
935 /* Assuming TYPE is a simple, non-empty array type, compute its upper
936 and lower bound. Save the low bound into LOW_BOUND if not NULL.
937 Save the high bound into HIGH_BOUND if not NULL.
939 Return 1 if the operation was successful. Return zero otherwise,
940 in which case the values of LOW_BOUND and HIGH_BOUNDS are unmodified.
942 We now simply use get_discrete_bounds call to get the values
943 of the low and high bounds.
944 get_discrete_bounds can return three values:
945 1, meaning that index is a range,
946 0, meaning that index is a discrete type,
947 or -1 for failure. */
950 get_array_bounds (struct type *type, LONGEST *low_bound, LONGEST *high_bound)
952 struct type *index = TYPE_INDEX_TYPE (type);
960 res = get_discrete_bounds (index, &low, &high);
964 /* Check if the array bounds are undefined. */
966 && ((low_bound && TYPE_ARRAY_LOWER_BOUND_IS_UNDEFINED (type))
967 || (high_bound && TYPE_ARRAY_UPPER_BOUND_IS_UNDEFINED (type))))
979 /* Create an array type using either a blank type supplied in
980 RESULT_TYPE, or creating a new type, inheriting the objfile from
983 Elements will be of type ELEMENT_TYPE, the indices will be of type
986 If BIT_STRIDE is not zero, build a packed array type whose element
987 size is BIT_STRIDE. Otherwise, ignore this parameter.
989 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
990 sure it is TYPE_CODE_UNDEF before we bash it into an array
994 create_array_type_with_stride (struct type *result_type,
995 struct type *element_type,
996 struct type *range_type,
997 unsigned int bit_stride)
999 if (result_type == NULL)
1000 result_type = alloc_type_copy (range_type);
1002 TYPE_CODE (result_type) = TYPE_CODE_ARRAY;
1003 TYPE_TARGET_TYPE (result_type) = element_type;
1004 if (has_static_range (TYPE_RANGE_DATA (range_type)))
1006 LONGEST low_bound, high_bound;
1008 if (get_discrete_bounds (range_type, &low_bound, &high_bound) < 0)
1009 low_bound = high_bound = 0;
1010 CHECK_TYPEDEF (element_type);
1011 /* Be careful when setting the array length. Ada arrays can be
1012 empty arrays with the high_bound being smaller than the low_bound.
1013 In such cases, the array length should be zero. */
1014 if (high_bound < low_bound)
1015 TYPE_LENGTH (result_type) = 0;
1016 else if (bit_stride > 0)
1017 TYPE_LENGTH (result_type) =
1018 (bit_stride * (high_bound - low_bound + 1) + 7) / 8;
1020 TYPE_LENGTH (result_type) =
1021 TYPE_LENGTH (element_type) * (high_bound - low_bound + 1);
1025 /* This type is dynamic and its length needs to be computed
1026 on demand. In the meantime, avoid leaving the TYPE_LENGTH
1027 undefined by setting it to zero. Although we are not expected
1028 to trust TYPE_LENGTH in this case, setting the size to zero
1029 allows us to avoid allocating objects of random sizes in case
1030 we accidently do. */
1031 TYPE_LENGTH (result_type) = 0;
1034 TYPE_NFIELDS (result_type) = 1;
1035 TYPE_FIELDS (result_type) =
1036 (struct field *) TYPE_ZALLOC (result_type, sizeof (struct field));
1037 TYPE_INDEX_TYPE (result_type) = range_type;
1038 TYPE_VPTR_FIELDNO (result_type) = -1;
1040 TYPE_FIELD_BITSIZE (result_type, 0) = bit_stride;
1042 /* TYPE_FLAG_TARGET_STUB will take care of zero length arrays. */
1043 if (TYPE_LENGTH (result_type) == 0)
1044 TYPE_TARGET_STUB (result_type) = 1;
1049 /* Same as create_array_type_with_stride but with no bit_stride
1050 (BIT_STRIDE = 0), thus building an unpacked array. */
1053 create_array_type (struct type *result_type,
1054 struct type *element_type,
1055 struct type *range_type)
1057 return create_array_type_with_stride (result_type, element_type,
1062 lookup_array_range_type (struct type *element_type,
1063 LONGEST low_bound, LONGEST high_bound)
1065 struct gdbarch *gdbarch = get_type_arch (element_type);
1066 struct type *index_type = builtin_type (gdbarch)->builtin_int;
1067 struct type *range_type
1068 = create_static_range_type (NULL, index_type, low_bound, high_bound);
1070 return create_array_type (NULL, element_type, range_type);
1073 /* Create a string type using either a blank type supplied in
1074 RESULT_TYPE, or creating a new type. String types are similar
1075 enough to array of char types that we can use create_array_type to
1076 build the basic type and then bash it into a string type.
1078 For fixed length strings, the range type contains 0 as the lower
1079 bound and the length of the string minus one as the upper bound.
1081 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
1082 sure it is TYPE_CODE_UNDEF before we bash it into a string
1086 create_string_type (struct type *result_type,
1087 struct type *string_char_type,
1088 struct type *range_type)
1090 result_type = create_array_type (result_type,
1093 TYPE_CODE (result_type) = TYPE_CODE_STRING;
1098 lookup_string_range_type (struct type *string_char_type,
1099 LONGEST low_bound, LONGEST high_bound)
1101 struct type *result_type;
1103 result_type = lookup_array_range_type (string_char_type,
1104 low_bound, high_bound);
1105 TYPE_CODE (result_type) = TYPE_CODE_STRING;
1110 create_set_type (struct type *result_type, struct type *domain_type)
1112 if (result_type == NULL)
1113 result_type = alloc_type_copy (domain_type);
1115 TYPE_CODE (result_type) = TYPE_CODE_SET;
1116 TYPE_NFIELDS (result_type) = 1;
1117 TYPE_FIELDS (result_type) = TYPE_ZALLOC (result_type, sizeof (struct field));
1119 if (!TYPE_STUB (domain_type))
1121 LONGEST low_bound, high_bound, bit_length;
1123 if (get_discrete_bounds (domain_type, &low_bound, &high_bound) < 0)
1124 low_bound = high_bound = 0;
1125 bit_length = high_bound - low_bound + 1;
1126 TYPE_LENGTH (result_type)
1127 = (bit_length + TARGET_CHAR_BIT - 1) / TARGET_CHAR_BIT;
1129 TYPE_UNSIGNED (result_type) = 1;
1131 TYPE_FIELD_TYPE (result_type, 0) = domain_type;
1136 /* Convert ARRAY_TYPE to a vector type. This may modify ARRAY_TYPE
1137 and any array types nested inside it. */
1140 make_vector_type (struct type *array_type)
1142 struct type *inner_array, *elt_type;
1145 /* Find the innermost array type, in case the array is
1146 multi-dimensional. */
1147 inner_array = array_type;
1148 while (TYPE_CODE (TYPE_TARGET_TYPE (inner_array)) == TYPE_CODE_ARRAY)
1149 inner_array = TYPE_TARGET_TYPE (inner_array);
1151 elt_type = TYPE_TARGET_TYPE (inner_array);
1152 if (TYPE_CODE (elt_type) == TYPE_CODE_INT)
1154 flags = TYPE_INSTANCE_FLAGS (elt_type) | TYPE_INSTANCE_FLAG_NOTTEXT;
1155 elt_type = make_qualified_type (elt_type, flags, NULL);
1156 TYPE_TARGET_TYPE (inner_array) = elt_type;
1159 TYPE_VECTOR (array_type) = 1;
1163 init_vector_type (struct type *elt_type, int n)
1165 struct type *array_type;
1167 array_type = lookup_array_range_type (elt_type, 0, n - 1);
1168 make_vector_type (array_type);
1172 /* Smash TYPE to be a type of pointers to members of DOMAIN with type
1173 TO_TYPE. A member pointer is a wierd thing -- it amounts to a
1174 typed offset into a struct, e.g. "an int at offset 8". A MEMBER
1175 TYPE doesn't include the offset (that's the value of the MEMBER
1176 itself), but does include the structure type into which it points
1179 When "smashing" the type, we preserve the objfile that the old type
1180 pointed to, since we aren't changing where the type is actually
1184 smash_to_memberptr_type (struct type *type, struct type *domain,
1185 struct type *to_type)
1188 TYPE_TARGET_TYPE (type) = to_type;
1189 TYPE_DOMAIN_TYPE (type) = domain;
1190 /* Assume that a data member pointer is the same size as a normal
1193 = gdbarch_ptr_bit (get_type_arch (to_type)) / TARGET_CHAR_BIT;
1194 TYPE_CODE (type) = TYPE_CODE_MEMBERPTR;
1197 /* Smash TYPE to be a type of pointer to methods type TO_TYPE.
1199 When "smashing" the type, we preserve the objfile that the old type
1200 pointed to, since we aren't changing where the type is actually
1204 smash_to_methodptr_type (struct type *type, struct type *to_type)
1207 TYPE_TARGET_TYPE (type) = to_type;
1208 TYPE_DOMAIN_TYPE (type) = TYPE_DOMAIN_TYPE (to_type);
1209 TYPE_LENGTH (type) = cplus_method_ptr_size (to_type);
1210 TYPE_CODE (type) = TYPE_CODE_METHODPTR;
1213 /* Smash TYPE to be a type of method of DOMAIN with type TO_TYPE.
1214 METHOD just means `function that gets an extra "this" argument'.
1216 When "smashing" the type, we preserve the objfile that the old type
1217 pointed to, since we aren't changing where the type is actually
1221 smash_to_method_type (struct type *type, struct type *domain,
1222 struct type *to_type, struct field *args,
1223 int nargs, int varargs)
1226 TYPE_TARGET_TYPE (type) = to_type;
1227 TYPE_DOMAIN_TYPE (type) = domain;
1228 TYPE_FIELDS (type) = args;
1229 TYPE_NFIELDS (type) = nargs;
1231 TYPE_VARARGS (type) = 1;
1232 TYPE_LENGTH (type) = 1; /* In practice, this is never needed. */
1233 TYPE_CODE (type) = TYPE_CODE_METHOD;
1236 /* Return a typename for a struct/union/enum type without "struct ",
1237 "union ", or "enum ". If the type has a NULL name, return NULL. */
1240 type_name_no_tag (const struct type *type)
1242 if (TYPE_TAG_NAME (type) != NULL)
1243 return TYPE_TAG_NAME (type);
1245 /* Is there code which expects this to return the name if there is
1246 no tag name? My guess is that this is mainly used for C++ in
1247 cases where the two will always be the same. */
1248 return TYPE_NAME (type);
1251 /* A wrapper of type_name_no_tag which calls error if the type is anonymous.
1252 Since GCC PR debug/47510 DWARF provides associated information to detect the
1253 anonymous class linkage name from its typedef.
1255 Parameter TYPE should not yet have CHECK_TYPEDEF applied, this function will
1259 type_name_no_tag_or_error (struct type *type)
1261 struct type *saved_type = type;
1263 struct objfile *objfile;
1265 CHECK_TYPEDEF (type);
1267 name = type_name_no_tag (type);
1271 name = type_name_no_tag (saved_type);
1272 objfile = TYPE_OBJFILE (saved_type);
1273 error (_("Invalid anonymous type %s [in module %s], GCC PR debug/47510 bug?"),
1274 name ? name : "<anonymous>",
1275 objfile ? objfile_name (objfile) : "<arch>");
1278 /* Lookup a typedef or primitive type named NAME, visible in lexical
1279 block BLOCK. If NOERR is nonzero, return zero if NAME is not
1280 suitably defined. */
1283 lookup_typename (const struct language_defn *language,
1284 struct gdbarch *gdbarch, const char *name,
1285 const struct block *block, int noerr)
1290 sym = lookup_symbol (name, block, VAR_DOMAIN, 0);
1291 if (sym != NULL && SYMBOL_CLASS (sym) == LOC_TYPEDEF)
1292 return SYMBOL_TYPE (sym);
1294 type = language_lookup_primitive_type_by_name (language, gdbarch, name);
1300 error (_("No type named %s."), name);
1304 lookup_unsigned_typename (const struct language_defn *language,
1305 struct gdbarch *gdbarch, const char *name)
1307 char *uns = alloca (strlen (name) + 10);
1309 strcpy (uns, "unsigned ");
1310 strcpy (uns + 9, name);
1311 return lookup_typename (language, gdbarch, uns, (struct block *) NULL, 0);
1315 lookup_signed_typename (const struct language_defn *language,
1316 struct gdbarch *gdbarch, const char *name)
1319 char *uns = alloca (strlen (name) + 8);
1321 strcpy (uns, "signed ");
1322 strcpy (uns + 7, name);
1323 t = lookup_typename (language, gdbarch, uns, (struct block *) NULL, 1);
1324 /* If we don't find "signed FOO" just try again with plain "FOO". */
1327 return lookup_typename (language, gdbarch, name, (struct block *) NULL, 0);
1330 /* Lookup a structure type named "struct NAME",
1331 visible in lexical block BLOCK. */
1334 lookup_struct (const char *name, const struct block *block)
1338 sym = lookup_symbol (name, block, STRUCT_DOMAIN, 0);
1342 error (_("No struct type named %s."), name);
1344 if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_STRUCT)
1346 error (_("This context has class, union or enum %s, not a struct."),
1349 return (SYMBOL_TYPE (sym));
1352 /* Lookup a union type named "union NAME",
1353 visible in lexical block BLOCK. */
1356 lookup_union (const char *name, const struct block *block)
1361 sym = lookup_symbol (name, block, STRUCT_DOMAIN, 0);
1364 error (_("No union type named %s."), name);
1366 t = SYMBOL_TYPE (sym);
1368 if (TYPE_CODE (t) == TYPE_CODE_UNION)
1371 /* If we get here, it's not a union. */
1372 error (_("This context has class, struct or enum %s, not a union."),
1376 /* Lookup an enum type named "enum NAME",
1377 visible in lexical block BLOCK. */
1380 lookup_enum (const char *name, const struct block *block)
1384 sym = lookup_symbol (name, block, STRUCT_DOMAIN, 0);
1387 error (_("No enum type named %s."), name);
1389 if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_ENUM)
1391 error (_("This context has class, struct or union %s, not an enum."),
1394 return (SYMBOL_TYPE (sym));
1397 /* Lookup a template type named "template NAME<TYPE>",
1398 visible in lexical block BLOCK. */
1401 lookup_template_type (char *name, struct type *type,
1402 const struct block *block)
1405 char *nam = (char *)
1406 alloca (strlen (name) + strlen (TYPE_NAME (type)) + 4);
1410 strcat (nam, TYPE_NAME (type));
1411 strcat (nam, " >"); /* FIXME, extra space still introduced in gcc? */
1413 sym = lookup_symbol (nam, block, VAR_DOMAIN, 0);
1417 error (_("No template type named %s."), name);
1419 if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_STRUCT)
1421 error (_("This context has class, union or enum %s, not a struct."),
1424 return (SYMBOL_TYPE (sym));
1427 /* Given a type TYPE, lookup the type of the component of type named
1430 TYPE can be either a struct or union, or a pointer or reference to
1431 a struct or union. If it is a pointer or reference, its target
1432 type is automatically used. Thus '.' and '->' are interchangable,
1433 as specified for the definitions of the expression element types
1434 STRUCTOP_STRUCT and STRUCTOP_PTR.
1436 If NOERR is nonzero, return zero if NAME is not suitably defined.
1437 If NAME is the name of a baseclass type, return that type. */
1440 lookup_struct_elt_type (struct type *type, const char *name, int noerr)
1447 CHECK_TYPEDEF (type);
1448 if (TYPE_CODE (type) != TYPE_CODE_PTR
1449 && TYPE_CODE (type) != TYPE_CODE_REF)
1451 type = TYPE_TARGET_TYPE (type);
1454 if (TYPE_CODE (type) != TYPE_CODE_STRUCT
1455 && TYPE_CODE (type) != TYPE_CODE_UNION)
1457 typename = type_to_string (type);
1458 make_cleanup (xfree, typename);
1459 error (_("Type %s is not a structure or union type."), typename);
1463 /* FIXME: This change put in by Michael seems incorrect for the case
1464 where the structure tag name is the same as the member name.
1465 I.e. when doing "ptype bell->bar" for "struct foo { int bar; int
1466 foo; } bell;" Disabled by fnf. */
1470 typename = type_name_no_tag (type);
1471 if (typename != NULL && strcmp (typename, name) == 0)
1476 for (i = TYPE_NFIELDS (type) - 1; i >= TYPE_N_BASECLASSES (type); i--)
1478 const char *t_field_name = TYPE_FIELD_NAME (type, i);
1480 if (t_field_name && (strcmp_iw (t_field_name, name) == 0))
1482 return TYPE_FIELD_TYPE (type, i);
1484 else if (!t_field_name || *t_field_name == '\0')
1486 struct type *subtype
1487 = lookup_struct_elt_type (TYPE_FIELD_TYPE (type, i), name, 1);
1489 if (subtype != NULL)
1494 /* OK, it's not in this class. Recursively check the baseclasses. */
1495 for (i = TYPE_N_BASECLASSES (type) - 1; i >= 0; i--)
1499 t = lookup_struct_elt_type (TYPE_BASECLASS (type, i), name, 1);
1511 typename = type_to_string (type);
1512 make_cleanup (xfree, typename);
1513 error (_("Type %s has no component named %s."), typename, name);
1516 /* Store in *MAX the largest number representable by unsigned integer type
1520 get_unsigned_type_max (struct type *type, ULONGEST *max)
1524 CHECK_TYPEDEF (type);
1525 gdb_assert (TYPE_CODE (type) == TYPE_CODE_INT && TYPE_UNSIGNED (type));
1526 gdb_assert (TYPE_LENGTH (type) <= sizeof (ULONGEST));
1528 /* Written this way to avoid overflow. */
1529 n = TYPE_LENGTH (type) * TARGET_CHAR_BIT;
1530 *max = ((((ULONGEST) 1 << (n - 1)) - 1) << 1) | 1;
1533 /* Store in *MIN, *MAX the smallest and largest numbers representable by
1534 signed integer type TYPE. */
1537 get_signed_type_minmax (struct type *type, LONGEST *min, LONGEST *max)
1541 CHECK_TYPEDEF (type);
1542 gdb_assert (TYPE_CODE (type) == TYPE_CODE_INT && !TYPE_UNSIGNED (type));
1543 gdb_assert (TYPE_LENGTH (type) <= sizeof (LONGEST));
1545 n = TYPE_LENGTH (type) * TARGET_CHAR_BIT;
1546 *min = -((ULONGEST) 1 << (n - 1));
1547 *max = ((ULONGEST) 1 << (n - 1)) - 1;
1550 /* Lookup the vptr basetype/fieldno values for TYPE.
1551 If found store vptr_basetype in *BASETYPEP if non-NULL, and return
1552 vptr_fieldno. Also, if found and basetype is from the same objfile,
1554 If not found, return -1 and ignore BASETYPEP.
1555 Callers should be aware that in some cases (for example,
1556 the type or one of its baseclasses is a stub type and we are
1557 debugging a .o file, or the compiler uses DWARF-2 and is not GCC),
1558 this function will not be able to find the
1559 virtual function table pointer, and vptr_fieldno will remain -1 and
1560 vptr_basetype will remain NULL or incomplete. */
1563 get_vptr_fieldno (struct type *type, struct type **basetypep)
1565 CHECK_TYPEDEF (type);
1567 if (TYPE_VPTR_FIELDNO (type) < 0)
1571 /* We must start at zero in case the first (and only) baseclass
1572 is virtual (and hence we cannot share the table pointer). */
1573 for (i = 0; i < TYPE_N_BASECLASSES (type); i++)
1575 struct type *baseclass = check_typedef (TYPE_BASECLASS (type, i));
1577 struct type *basetype;
1579 fieldno = get_vptr_fieldno (baseclass, &basetype);
1582 /* If the type comes from a different objfile we can't cache
1583 it, it may have a different lifetime. PR 2384 */
1584 if (TYPE_OBJFILE (type) == TYPE_OBJFILE (basetype))
1586 TYPE_VPTR_FIELDNO (type) = fieldno;
1587 TYPE_VPTR_BASETYPE (type) = basetype;
1590 *basetypep = basetype;
1601 *basetypep = TYPE_VPTR_BASETYPE (type);
1602 return TYPE_VPTR_FIELDNO (type);
1607 stub_noname_complaint (void)
1609 complaint (&symfile_complaints, _("stub type has NULL name"));
1612 /* Worker for is_dynamic_type. */
1615 is_dynamic_type_internal (struct type *type, int top_level)
1617 type = check_typedef (type);
1619 /* We only want to recognize references at the outermost level. */
1620 if (top_level && TYPE_CODE (type) == TYPE_CODE_REF)
1621 type = check_typedef (TYPE_TARGET_TYPE (type));
1623 switch (TYPE_CODE (type))
1625 case TYPE_CODE_RANGE:
1626 return !has_static_range (TYPE_RANGE_DATA (type));
1628 case TYPE_CODE_ARRAY:
1630 gdb_assert (TYPE_NFIELDS (type) == 1);
1632 /* The array is dynamic if either the bounds are dynamic,
1633 or the elements it contains have a dynamic contents. */
1634 if (is_dynamic_type_internal (TYPE_INDEX_TYPE (type), 0))
1636 return is_dynamic_type_internal (TYPE_TARGET_TYPE (type), 0);
1639 case TYPE_CODE_STRUCT:
1640 case TYPE_CODE_UNION:
1644 for (i = 0; i < TYPE_NFIELDS (type); ++i)
1645 if (!field_is_static (&TYPE_FIELD (type, i))
1646 && is_dynamic_type_internal (TYPE_FIELD_TYPE (type, i), 0))
1655 /* See gdbtypes.h. */
1658 is_dynamic_type (struct type *type)
1660 return is_dynamic_type_internal (type, 1);
1663 static struct type *resolve_dynamic_type_internal (struct type *type,
1667 /* Given a dynamic range type (dyn_range_type) and address,
1668 return a static version of that type. */
1670 static struct type *
1671 resolve_dynamic_range (struct type *dyn_range_type, CORE_ADDR addr)
1674 struct type *static_range_type;
1675 const struct dynamic_prop *prop;
1676 const struct dwarf2_locexpr_baton *baton;
1677 struct dynamic_prop low_bound, high_bound;
1679 gdb_assert (TYPE_CODE (dyn_range_type) == TYPE_CODE_RANGE);
1681 prop = &TYPE_RANGE_DATA (dyn_range_type)->low;
1682 if (dwarf2_evaluate_property (prop, addr, &value))
1684 low_bound.kind = PROP_CONST;
1685 low_bound.data.const_val = value;
1689 low_bound.kind = PROP_UNDEFINED;
1690 low_bound.data.const_val = 0;
1693 prop = &TYPE_RANGE_DATA (dyn_range_type)->high;
1694 if (dwarf2_evaluate_property (prop, addr, &value))
1696 high_bound.kind = PROP_CONST;
1697 high_bound.data.const_val = value;
1699 if (TYPE_RANGE_DATA (dyn_range_type)->flag_upper_bound_is_count)
1700 high_bound.data.const_val
1701 = low_bound.data.const_val + high_bound.data.const_val - 1;
1705 high_bound.kind = PROP_UNDEFINED;
1706 high_bound.data.const_val = 0;
1709 static_range_type = create_range_type (copy_type (dyn_range_type),
1710 TYPE_TARGET_TYPE (dyn_range_type),
1711 &low_bound, &high_bound);
1712 TYPE_RANGE_DATA (static_range_type)->flag_bound_evaluated = 1;
1713 return static_range_type;
1716 /* Resolves dynamic bound values of an array type TYPE to static ones.
1717 ADDRESS might be needed to resolve the subrange bounds, it is the location
1718 of the associated array. */
1720 static struct type *
1721 resolve_dynamic_array (struct type *type, CORE_ADDR addr)
1724 struct type *elt_type;
1725 struct type *range_type;
1726 struct type *ary_dim;
1728 gdb_assert (TYPE_CODE (type) == TYPE_CODE_ARRAY);
1731 range_type = check_typedef (TYPE_INDEX_TYPE (elt_type));
1732 range_type = resolve_dynamic_range (range_type, addr);
1734 ary_dim = check_typedef (TYPE_TARGET_TYPE (elt_type));
1736 if (ary_dim != NULL && TYPE_CODE (ary_dim) == TYPE_CODE_ARRAY)
1737 elt_type = resolve_dynamic_array (TYPE_TARGET_TYPE (type), addr);
1739 elt_type = TYPE_TARGET_TYPE (type);
1741 return create_array_type (copy_type (type),
1746 /* Resolve dynamic bounds of members of the union TYPE to static
1749 static struct type *
1750 resolve_dynamic_union (struct type *type, CORE_ADDR addr)
1752 struct type *resolved_type;
1754 unsigned int max_len = 0;
1756 gdb_assert (TYPE_CODE (type) == TYPE_CODE_UNION);
1758 resolved_type = copy_type (type);
1759 TYPE_FIELDS (resolved_type)
1760 = TYPE_ALLOC (resolved_type,
1761 TYPE_NFIELDS (resolved_type) * sizeof (struct field));
1762 memcpy (TYPE_FIELDS (resolved_type),
1764 TYPE_NFIELDS (resolved_type) * sizeof (struct field));
1765 for (i = 0; i < TYPE_NFIELDS (resolved_type); ++i)
1769 if (field_is_static (&TYPE_FIELD (type, i)))
1772 t = resolve_dynamic_type_internal (TYPE_FIELD_TYPE (resolved_type, i),
1774 TYPE_FIELD_TYPE (resolved_type, i) = t;
1775 if (TYPE_LENGTH (t) > max_len)
1776 max_len = TYPE_LENGTH (t);
1779 TYPE_LENGTH (resolved_type) = max_len;
1780 return resolved_type;
1783 /* Resolve dynamic bounds of members of the struct TYPE to static
1786 static struct type *
1787 resolve_dynamic_struct (struct type *type, CORE_ADDR addr)
1789 struct type *resolved_type;
1791 unsigned resolved_type_bit_length = 0;
1793 gdb_assert (TYPE_CODE (type) == TYPE_CODE_STRUCT);
1794 gdb_assert (TYPE_NFIELDS (type) > 0);
1796 resolved_type = copy_type (type);
1797 TYPE_FIELDS (resolved_type)
1798 = TYPE_ALLOC (resolved_type,
1799 TYPE_NFIELDS (resolved_type) * sizeof (struct field));
1800 memcpy (TYPE_FIELDS (resolved_type),
1802 TYPE_NFIELDS (resolved_type) * sizeof (struct field));
1803 for (i = 0; i < TYPE_NFIELDS (resolved_type); ++i)
1805 unsigned new_bit_length;
1807 if (field_is_static (&TYPE_FIELD (type, i)))
1810 TYPE_FIELD_TYPE (resolved_type, i)
1811 = resolve_dynamic_type_internal (TYPE_FIELD_TYPE (resolved_type, i),
1814 /* As we know this field is not a static field, the field's
1815 field_loc_kind should be FIELD_LOC_KIND_BITPOS. Verify
1816 this is the case, but only trigger a simple error rather
1817 than an internal error if that fails. While failing
1818 that verification indicates a bug in our code, the error
1819 is not severe enough to suggest to the user he stops
1820 his debugging session because of it. */
1821 if (TYPE_FIELD_LOC_KIND (resolved_type, i) != FIELD_LOC_KIND_BITPOS)
1822 error (_("Cannot determine struct field location"
1823 " (invalid location kind)"));
1824 new_bit_length = TYPE_FIELD_BITPOS (resolved_type, i);
1825 if (TYPE_FIELD_BITSIZE (resolved_type, i) != 0)
1826 new_bit_length += TYPE_FIELD_BITSIZE (resolved_type, i);
1828 new_bit_length += (TYPE_LENGTH (TYPE_FIELD_TYPE (resolved_type, i))
1831 /* Normally, we would use the position and size of the last field
1832 to determine the size of the enclosing structure. But GCC seems
1833 to be encoding the position of some fields incorrectly when
1834 the struct contains a dynamic field that is not placed last.
1835 So we compute the struct size based on the field that has
1836 the highest position + size - probably the best we can do. */
1837 if (new_bit_length > resolved_type_bit_length)
1838 resolved_type_bit_length = new_bit_length;
1841 TYPE_LENGTH (resolved_type)
1842 = (resolved_type_bit_length + TARGET_CHAR_BIT - 1) / TARGET_CHAR_BIT;
1844 return resolved_type;
1847 /* Worker for resolved_dynamic_type. */
1849 static struct type *
1850 resolve_dynamic_type_internal (struct type *type, CORE_ADDR addr,
1853 struct type *real_type = check_typedef (type);
1854 struct type *resolved_type = type;
1856 if (!is_dynamic_type_internal (real_type, top_level))
1859 switch (TYPE_CODE (type))
1861 case TYPE_CODE_TYPEDEF:
1862 resolved_type = copy_type (type);
1863 TYPE_TARGET_TYPE (resolved_type)
1864 = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (type), addr,
1870 CORE_ADDR target_addr = read_memory_typed_address (addr, type);
1872 resolved_type = copy_type (type);
1873 TYPE_TARGET_TYPE (resolved_type)
1874 = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (type),
1875 target_addr, top_level);
1879 case TYPE_CODE_ARRAY:
1880 resolved_type = resolve_dynamic_array (type, addr);
1883 case TYPE_CODE_RANGE:
1884 resolved_type = resolve_dynamic_range (type, addr);
1887 case TYPE_CODE_UNION:
1888 resolved_type = resolve_dynamic_union (type, addr);
1891 case TYPE_CODE_STRUCT:
1892 resolved_type = resolve_dynamic_struct (type, addr);
1896 return resolved_type;
1899 /* See gdbtypes.h */
1902 resolve_dynamic_type (struct type *type, CORE_ADDR addr)
1904 return resolve_dynamic_type_internal (type, addr, 1);
1907 /* Find the real type of TYPE. This function returns the real type,
1908 after removing all layers of typedefs, and completing opaque or stub
1909 types. Completion changes the TYPE argument, but stripping of
1912 Instance flags (e.g. const/volatile) are preserved as typedefs are
1913 stripped. If necessary a new qualified form of the underlying type
1916 NOTE: This will return a typedef if TYPE_TARGET_TYPE for the typedef has
1917 not been computed and we're either in the middle of reading symbols, or
1918 there was no name for the typedef in the debug info.
1920 NOTE: Lookup of opaque types can throw errors for invalid symbol files.
1921 QUITs in the symbol reading code can also throw.
1922 Thus this function can throw an exception.
1924 If TYPE is a TYPE_CODE_TYPEDEF, its length is updated to the length of
1927 If this is a stubbed struct (i.e. declared as struct foo *), see if
1928 we can find a full definition in some other file. If so, copy this
1929 definition, so we can use it in future. There used to be a comment
1930 (but not any code) that if we don't find a full definition, we'd
1931 set a flag so we don't spend time in the future checking the same
1932 type. That would be a mistake, though--we might load in more
1933 symbols which contain a full definition for the type. */
1936 check_typedef (struct type *type)
1938 struct type *orig_type = type;
1939 /* While we're removing typedefs, we don't want to lose qualifiers.
1940 E.g., const/volatile. */
1941 int instance_flags = TYPE_INSTANCE_FLAGS (type);
1945 while (TYPE_CODE (type) == TYPE_CODE_TYPEDEF)
1947 if (!TYPE_TARGET_TYPE (type))
1952 /* It is dangerous to call lookup_symbol if we are currently
1953 reading a symtab. Infinite recursion is one danger. */
1954 if (currently_reading_symtab)
1955 return make_qualified_type (type, instance_flags, NULL);
1957 name = type_name_no_tag (type);
1958 /* FIXME: shouldn't we separately check the TYPE_NAME and
1959 the TYPE_TAG_NAME, and look in STRUCT_DOMAIN and/or
1960 VAR_DOMAIN as appropriate? (this code was written before
1961 TYPE_NAME and TYPE_TAG_NAME were separate). */
1964 stub_noname_complaint ();
1965 return make_qualified_type (type, instance_flags, NULL);
1967 sym = lookup_symbol (name, 0, STRUCT_DOMAIN, 0);
1969 TYPE_TARGET_TYPE (type) = SYMBOL_TYPE (sym);
1970 else /* TYPE_CODE_UNDEF */
1971 TYPE_TARGET_TYPE (type) = alloc_type_arch (get_type_arch (type));
1973 type = TYPE_TARGET_TYPE (type);
1975 /* Preserve the instance flags as we traverse down the typedef chain.
1977 Handling address spaces/classes is nasty, what do we do if there's a
1979 E.g., what if an outer typedef marks the type as class_1 and an inner
1980 typedef marks the type as class_2?
1981 This is the wrong place to do such error checking. We leave it to
1982 the code that created the typedef in the first place to flag the
1983 error. We just pick the outer address space (akin to letting the
1984 outer cast in a chain of casting win), instead of assuming
1985 "it can't happen". */
1987 const int ALL_SPACES = (TYPE_INSTANCE_FLAG_CODE_SPACE
1988 | TYPE_INSTANCE_FLAG_DATA_SPACE);
1989 const int ALL_CLASSES = TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL;
1990 int new_instance_flags = TYPE_INSTANCE_FLAGS (type);
1992 /* Treat code vs data spaces and address classes separately. */
1993 if ((instance_flags & ALL_SPACES) != 0)
1994 new_instance_flags &= ~ALL_SPACES;
1995 if ((instance_flags & ALL_CLASSES) != 0)
1996 new_instance_flags &= ~ALL_CLASSES;
1998 instance_flags |= new_instance_flags;
2002 /* If this is a struct/class/union with no fields, then check
2003 whether a full definition exists somewhere else. This is for
2004 systems where a type definition with no fields is issued for such
2005 types, instead of identifying them as stub types in the first
2008 if (TYPE_IS_OPAQUE (type)
2009 && opaque_type_resolution
2010 && !currently_reading_symtab)
2012 const char *name = type_name_no_tag (type);
2013 struct type *newtype;
2017 stub_noname_complaint ();
2018 return make_qualified_type (type, instance_flags, NULL);
2020 newtype = lookup_transparent_type (name);
2024 /* If the resolved type and the stub are in the same
2025 objfile, then replace the stub type with the real deal.
2026 But if they're in separate objfiles, leave the stub
2027 alone; we'll just look up the transparent type every time
2028 we call check_typedef. We can't create pointers between
2029 types allocated to different objfiles, since they may
2030 have different lifetimes. Trying to copy NEWTYPE over to
2031 TYPE's objfile is pointless, too, since you'll have to
2032 move over any other types NEWTYPE refers to, which could
2033 be an unbounded amount of stuff. */
2034 if (TYPE_OBJFILE (newtype) == TYPE_OBJFILE (type))
2035 type = make_qualified_type (newtype,
2036 TYPE_INSTANCE_FLAGS (type),
2042 /* Otherwise, rely on the stub flag being set for opaque/stubbed
2044 else if (TYPE_STUB (type) && !currently_reading_symtab)
2046 const char *name = type_name_no_tag (type);
2047 /* FIXME: shouldn't we separately check the TYPE_NAME and the
2048 TYPE_TAG_NAME, and look in STRUCT_DOMAIN and/or VAR_DOMAIN
2049 as appropriate? (this code was written before TYPE_NAME and
2050 TYPE_TAG_NAME were separate). */
2055 stub_noname_complaint ();
2056 return make_qualified_type (type, instance_flags, NULL);
2058 sym = lookup_symbol (name, 0, STRUCT_DOMAIN, 0);
2061 /* Same as above for opaque types, we can replace the stub
2062 with the complete type only if they are in the same
2064 if (TYPE_OBJFILE (SYMBOL_TYPE(sym)) == TYPE_OBJFILE (type))
2065 type = make_qualified_type (SYMBOL_TYPE (sym),
2066 TYPE_INSTANCE_FLAGS (type),
2069 type = SYMBOL_TYPE (sym);
2073 if (TYPE_TARGET_STUB (type))
2075 struct type *range_type;
2076 struct type *target_type = check_typedef (TYPE_TARGET_TYPE (type));
2078 if (TYPE_STUB (target_type) || TYPE_TARGET_STUB (target_type))
2080 /* Nothing we can do. */
2082 else if (TYPE_CODE (type) == TYPE_CODE_RANGE)
2084 TYPE_LENGTH (type) = TYPE_LENGTH (target_type);
2085 TYPE_TARGET_STUB (type) = 0;
2089 type = make_qualified_type (type, instance_flags, NULL);
2091 /* Cache TYPE_LENGTH for future use. */
2092 TYPE_LENGTH (orig_type) = TYPE_LENGTH (type);
2097 /* Parse a type expression in the string [P..P+LENGTH). If an error
2098 occurs, silently return a void type. */
2100 static struct type *
2101 safe_parse_type (struct gdbarch *gdbarch, char *p, int length)
2103 struct ui_file *saved_gdb_stderr;
2104 struct type *type = NULL; /* Initialize to keep gcc happy. */
2105 volatile struct gdb_exception except;
2107 /* Suppress error messages. */
2108 saved_gdb_stderr = gdb_stderr;
2109 gdb_stderr = ui_file_new ();
2111 /* Call parse_and_eval_type() without fear of longjmp()s. */
2112 TRY_CATCH (except, RETURN_MASK_ERROR)
2114 type = parse_and_eval_type (p, length);
2117 if (except.reason < 0)
2118 type = builtin_type (gdbarch)->builtin_void;
2120 /* Stop suppressing error messages. */
2121 ui_file_delete (gdb_stderr);
2122 gdb_stderr = saved_gdb_stderr;
2127 /* Ugly hack to convert method stubs into method types.
2129 He ain't kiddin'. This demangles the name of the method into a
2130 string including argument types, parses out each argument type,
2131 generates a string casting a zero to that type, evaluates the
2132 string, and stuffs the resulting type into an argtype vector!!!
2133 Then it knows the type of the whole function (including argument
2134 types for overloading), which info used to be in the stab's but was
2135 removed to hack back the space required for them. */
2138 check_stub_method (struct type *type, int method_id, int signature_id)
2140 struct gdbarch *gdbarch = get_type_arch (type);
2142 char *mangled_name = gdb_mangle_name (type, method_id, signature_id);
2143 char *demangled_name = gdb_demangle (mangled_name,
2144 DMGL_PARAMS | DMGL_ANSI);
2145 char *argtypetext, *p;
2146 int depth = 0, argcount = 1;
2147 struct field *argtypes;
2150 /* Make sure we got back a function string that we can use. */
2152 p = strchr (demangled_name, '(');
2156 if (demangled_name == NULL || p == NULL)
2157 error (_("Internal: Cannot demangle mangled name `%s'."),
2160 /* Now, read in the parameters that define this type. */
2165 if (*p == '(' || *p == '<')
2169 else if (*p == ')' || *p == '>')
2173 else if (*p == ',' && depth == 0)
2181 /* If we read one argument and it was ``void'', don't count it. */
2182 if (strncmp (argtypetext, "(void)", 6) == 0)
2185 /* We need one extra slot, for the THIS pointer. */
2187 argtypes = (struct field *)
2188 TYPE_ALLOC (type, (argcount + 1) * sizeof (struct field));
2191 /* Add THIS pointer for non-static methods. */
2192 f = TYPE_FN_FIELDLIST1 (type, method_id);
2193 if (TYPE_FN_FIELD_STATIC_P (f, signature_id))
2197 argtypes[0].type = lookup_pointer_type (type);
2201 if (*p != ')') /* () means no args, skip while. */
2206 if (depth <= 0 && (*p == ',' || *p == ')'))
2208 /* Avoid parsing of ellipsis, they will be handled below.
2209 Also avoid ``void'' as above. */
2210 if (strncmp (argtypetext, "...", p - argtypetext) != 0
2211 && strncmp (argtypetext, "void", p - argtypetext) != 0)
2213 argtypes[argcount].type =
2214 safe_parse_type (gdbarch, argtypetext, p - argtypetext);
2217 argtypetext = p + 1;
2220 if (*p == '(' || *p == '<')
2224 else if (*p == ')' || *p == '>')
2233 TYPE_FN_FIELD_PHYSNAME (f, signature_id) = mangled_name;
2235 /* Now update the old "stub" type into a real type. */
2236 mtype = TYPE_FN_FIELD_TYPE (f, signature_id);
2237 TYPE_DOMAIN_TYPE (mtype) = type;
2238 TYPE_FIELDS (mtype) = argtypes;
2239 TYPE_NFIELDS (mtype) = argcount;
2240 TYPE_STUB (mtype) = 0;
2241 TYPE_FN_FIELD_STUB (f, signature_id) = 0;
2243 TYPE_VARARGS (mtype) = 1;
2245 xfree (demangled_name);
2248 /* This is the external interface to check_stub_method, above. This
2249 function unstubs all of the signatures for TYPE's METHOD_ID method
2250 name. After calling this function TYPE_FN_FIELD_STUB will be
2251 cleared for each signature and TYPE_FN_FIELDLIST_NAME will be
2254 This function unfortunately can not die until stabs do. */
2257 check_stub_method_group (struct type *type, int method_id)
2259 int len = TYPE_FN_FIELDLIST_LENGTH (type, method_id);
2260 struct fn_field *f = TYPE_FN_FIELDLIST1 (type, method_id);
2261 int j, found_stub = 0;
2263 for (j = 0; j < len; j++)
2264 if (TYPE_FN_FIELD_STUB (f, j))
2267 check_stub_method (type, method_id, j);
2270 /* GNU v3 methods with incorrect names were corrected when we read
2271 in type information, because it was cheaper to do it then. The
2272 only GNU v2 methods with incorrect method names are operators and
2273 destructors; destructors were also corrected when we read in type
2276 Therefore the only thing we need to handle here are v2 operator
2278 if (found_stub && strncmp (TYPE_FN_FIELD_PHYSNAME (f, 0), "_Z", 2) != 0)
2281 char dem_opname[256];
2283 ret = cplus_demangle_opname (TYPE_FN_FIELDLIST_NAME (type,
2285 dem_opname, DMGL_ANSI);
2287 ret = cplus_demangle_opname (TYPE_FN_FIELDLIST_NAME (type,
2291 TYPE_FN_FIELDLIST_NAME (type, method_id) = xstrdup (dem_opname);
2295 /* Ensure it is in .rodata (if available) by workarounding GCC PR 44690. */
2296 const struct cplus_struct_type cplus_struct_default = { };
2299 allocate_cplus_struct_type (struct type *type)
2301 if (HAVE_CPLUS_STRUCT (type))
2302 /* Structure was already allocated. Nothing more to do. */
2305 TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_CPLUS_STUFF;
2306 TYPE_RAW_CPLUS_SPECIFIC (type) = (struct cplus_struct_type *)
2307 TYPE_ALLOC (type, sizeof (struct cplus_struct_type));
2308 *(TYPE_RAW_CPLUS_SPECIFIC (type)) = cplus_struct_default;
2311 const struct gnat_aux_type gnat_aux_default =
2314 /* Set the TYPE's type-specific kind to TYPE_SPECIFIC_GNAT_STUFF,
2315 and allocate the associated gnat-specific data. The gnat-specific
2316 data is also initialized to gnat_aux_default. */
2319 allocate_gnat_aux_type (struct type *type)
2321 TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_GNAT_STUFF;
2322 TYPE_GNAT_SPECIFIC (type) = (struct gnat_aux_type *)
2323 TYPE_ALLOC (type, sizeof (struct gnat_aux_type));
2324 *(TYPE_GNAT_SPECIFIC (type)) = gnat_aux_default;
2327 /* Helper function to initialize the standard scalar types.
2329 If NAME is non-NULL, then it is used to initialize the type name.
2330 Note that NAME is not copied; it is required to have a lifetime at
2331 least as long as OBJFILE. */
2334 init_type (enum type_code code, int length, int flags,
2335 const char *name, struct objfile *objfile)
2339 type = alloc_type (objfile);
2340 TYPE_CODE (type) = code;
2341 TYPE_LENGTH (type) = length;
2343 gdb_assert (!(flags & (TYPE_FLAG_MIN - 1)));
2344 if (flags & TYPE_FLAG_UNSIGNED)
2345 TYPE_UNSIGNED (type) = 1;
2346 if (flags & TYPE_FLAG_NOSIGN)
2347 TYPE_NOSIGN (type) = 1;
2348 if (flags & TYPE_FLAG_STUB)
2349 TYPE_STUB (type) = 1;
2350 if (flags & TYPE_FLAG_TARGET_STUB)
2351 TYPE_TARGET_STUB (type) = 1;
2352 if (flags & TYPE_FLAG_STATIC)
2353 TYPE_STATIC (type) = 1;
2354 if (flags & TYPE_FLAG_PROTOTYPED)
2355 TYPE_PROTOTYPED (type) = 1;
2356 if (flags & TYPE_FLAG_INCOMPLETE)
2357 TYPE_INCOMPLETE (type) = 1;
2358 if (flags & TYPE_FLAG_VARARGS)
2359 TYPE_VARARGS (type) = 1;
2360 if (flags & TYPE_FLAG_VECTOR)
2361 TYPE_VECTOR (type) = 1;
2362 if (flags & TYPE_FLAG_STUB_SUPPORTED)
2363 TYPE_STUB_SUPPORTED (type) = 1;
2364 if (flags & TYPE_FLAG_FIXED_INSTANCE)
2365 TYPE_FIXED_INSTANCE (type) = 1;
2366 if (flags & TYPE_FLAG_GNU_IFUNC)
2367 TYPE_GNU_IFUNC (type) = 1;
2369 TYPE_NAME (type) = name;
2373 if (name && strcmp (name, "char") == 0)
2374 TYPE_NOSIGN (type) = 1;
2378 case TYPE_CODE_STRUCT:
2379 case TYPE_CODE_UNION:
2380 case TYPE_CODE_NAMESPACE:
2381 INIT_CPLUS_SPECIFIC (type);
2384 TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_FLOATFORMAT;
2386 case TYPE_CODE_FUNC:
2387 INIT_FUNC_SPECIFIC (type);
2393 /* Queries on types. */
2396 can_dereference (struct type *t)
2398 /* FIXME: Should we return true for references as well as
2403 && TYPE_CODE (t) == TYPE_CODE_PTR
2404 && TYPE_CODE (TYPE_TARGET_TYPE (t)) != TYPE_CODE_VOID);
2408 is_integral_type (struct type *t)
2413 && ((TYPE_CODE (t) == TYPE_CODE_INT)
2414 || (TYPE_CODE (t) == TYPE_CODE_ENUM)
2415 || (TYPE_CODE (t) == TYPE_CODE_FLAGS)
2416 || (TYPE_CODE (t) == TYPE_CODE_CHAR)
2417 || (TYPE_CODE (t) == TYPE_CODE_RANGE)
2418 || (TYPE_CODE (t) == TYPE_CODE_BOOL)));
2421 /* Return true if TYPE is scalar. */
2424 is_scalar_type (struct type *type)
2426 CHECK_TYPEDEF (type);
2428 switch (TYPE_CODE (type))
2430 case TYPE_CODE_ARRAY:
2431 case TYPE_CODE_STRUCT:
2432 case TYPE_CODE_UNION:
2434 case TYPE_CODE_STRING:
2441 /* Return true if T is scalar, or a composite type which in practice has
2442 the memory layout of a scalar type. E.g., an array or struct with only
2443 one scalar element inside it, or a union with only scalar elements. */
2446 is_scalar_type_recursive (struct type *t)
2450 if (is_scalar_type (t))
2452 /* Are we dealing with an array or string of known dimensions? */
2453 else if ((TYPE_CODE (t) == TYPE_CODE_ARRAY
2454 || TYPE_CODE (t) == TYPE_CODE_STRING) && TYPE_NFIELDS (t) == 1
2455 && TYPE_CODE (TYPE_INDEX_TYPE (t)) == TYPE_CODE_RANGE)
2457 LONGEST low_bound, high_bound;
2458 struct type *elt_type = check_typedef (TYPE_TARGET_TYPE (t));
2460 get_discrete_bounds (TYPE_INDEX_TYPE (t), &low_bound, &high_bound);
2462 return high_bound == low_bound && is_scalar_type_recursive (elt_type);
2464 /* Are we dealing with a struct with one element? */
2465 else if (TYPE_CODE (t) == TYPE_CODE_STRUCT && TYPE_NFIELDS (t) == 1)
2466 return is_scalar_type_recursive (TYPE_FIELD_TYPE (t, 0));
2467 else if (TYPE_CODE (t) == TYPE_CODE_UNION)
2469 int i, n = TYPE_NFIELDS (t);
2471 /* If all elements of the union are scalar, then the union is scalar. */
2472 for (i = 0; i < n; i++)
2473 if (!is_scalar_type_recursive (TYPE_FIELD_TYPE (t, i)))
2482 /* A helper function which returns true if types A and B represent the
2483 "same" class type. This is true if the types have the same main
2484 type, or the same name. */
2487 class_types_same_p (const struct type *a, const struct type *b)
2489 return (TYPE_MAIN_TYPE (a) == TYPE_MAIN_TYPE (b)
2490 || (TYPE_NAME (a) && TYPE_NAME (b)
2491 && !strcmp (TYPE_NAME (a), TYPE_NAME (b))));
2494 /* If BASE is an ancestor of DCLASS return the distance between them.
2495 otherwise return -1;
2499 class B: public A {};
2500 class C: public B {};
2503 distance_to_ancestor (A, A, 0) = 0
2504 distance_to_ancestor (A, B, 0) = 1
2505 distance_to_ancestor (A, C, 0) = 2
2506 distance_to_ancestor (A, D, 0) = 3
2508 If PUBLIC is 1 then only public ancestors are considered,
2509 and the function returns the distance only if BASE is a public ancestor
2513 distance_to_ancestor (A, D, 1) = -1. */
2516 distance_to_ancestor (struct type *base, struct type *dclass, int public)
2521 CHECK_TYPEDEF (base);
2522 CHECK_TYPEDEF (dclass);
2524 if (class_types_same_p (base, dclass))
2527 for (i = 0; i < TYPE_N_BASECLASSES (dclass); i++)
2529 if (public && ! BASETYPE_VIA_PUBLIC (dclass, i))
2532 d = distance_to_ancestor (base, TYPE_BASECLASS (dclass, i), public);
2540 /* Check whether BASE is an ancestor or base class or DCLASS
2541 Return 1 if so, and 0 if not.
2542 Note: If BASE and DCLASS are of the same type, this function
2543 will return 1. So for some class A, is_ancestor (A, A) will
2547 is_ancestor (struct type *base, struct type *dclass)
2549 return distance_to_ancestor (base, dclass, 0) >= 0;
2552 /* Like is_ancestor, but only returns true when BASE is a public
2553 ancestor of DCLASS. */
2556 is_public_ancestor (struct type *base, struct type *dclass)
2558 return distance_to_ancestor (base, dclass, 1) >= 0;
2561 /* A helper function for is_unique_ancestor. */
2564 is_unique_ancestor_worker (struct type *base, struct type *dclass,
2566 const gdb_byte *valaddr, int embedded_offset,
2567 CORE_ADDR address, struct value *val)
2571 CHECK_TYPEDEF (base);
2572 CHECK_TYPEDEF (dclass);
2574 for (i = 0; i < TYPE_N_BASECLASSES (dclass) && count < 2; ++i)
2579 iter = check_typedef (TYPE_BASECLASS (dclass, i));
2581 this_offset = baseclass_offset (dclass, i, valaddr, embedded_offset,
2584 if (class_types_same_p (base, iter))
2586 /* If this is the first subclass, set *OFFSET and set count
2587 to 1. Otherwise, if this is at the same offset as
2588 previous instances, do nothing. Otherwise, increment
2592 *offset = this_offset;
2595 else if (this_offset == *offset)
2603 count += is_unique_ancestor_worker (base, iter, offset,
2605 embedded_offset + this_offset,
2612 /* Like is_ancestor, but only returns true if BASE is a unique base
2613 class of the type of VAL. */
2616 is_unique_ancestor (struct type *base, struct value *val)
2620 return is_unique_ancestor_worker (base, value_type (val), &offset,
2621 value_contents_for_printing (val),
2622 value_embedded_offset (val),
2623 value_address (val), val) == 1;
2627 /* Overload resolution. */
2629 /* Return the sum of the rank of A with the rank of B. */
2632 sum_ranks (struct rank a, struct rank b)
2635 c.rank = a.rank + b.rank;
2636 c.subrank = a.subrank + b.subrank;
2640 /* Compare rank A and B and return:
2642 1 if a is better than b
2643 -1 if b is better than a. */
2646 compare_ranks (struct rank a, struct rank b)
2648 if (a.rank == b.rank)
2650 if (a.subrank == b.subrank)
2652 if (a.subrank < b.subrank)
2654 if (a.subrank > b.subrank)
2658 if (a.rank < b.rank)
2661 /* a.rank > b.rank */
2665 /* Functions for overload resolution begin here. */
2667 /* Compare two badness vectors A and B and return the result.
2668 0 => A and B are identical
2669 1 => A and B are incomparable
2670 2 => A is better than B
2671 3 => A is worse than B */
2674 compare_badness (struct badness_vector *a, struct badness_vector *b)
2678 short found_pos = 0; /* any positives in c? */
2679 short found_neg = 0; /* any negatives in c? */
2681 /* differing lengths => incomparable */
2682 if (a->length != b->length)
2685 /* Subtract b from a */
2686 for (i = 0; i < a->length; i++)
2688 tmp = compare_ranks (b->rank[i], a->rank[i]);
2698 return 1; /* incomparable */
2700 return 3; /* A > B */
2706 return 2; /* A < B */
2708 return 0; /* A == B */
2712 /* Rank a function by comparing its parameter types (PARMS, length
2713 NPARMS), to the types of an argument list (ARGS, length NARGS).
2714 Return a pointer to a badness vector. This has NARGS + 1
2717 struct badness_vector *
2718 rank_function (struct type **parms, int nparms,
2719 struct value **args, int nargs)
2722 struct badness_vector *bv;
2723 int min_len = nparms < nargs ? nparms : nargs;
2725 bv = xmalloc (sizeof (struct badness_vector));
2726 bv->length = nargs + 1; /* add 1 for the length-match rank. */
2727 bv->rank = XNEWVEC (struct rank, nargs + 1);
2729 /* First compare the lengths of the supplied lists.
2730 If there is a mismatch, set it to a high value. */
2732 /* pai/1997-06-03 FIXME: when we have debug info about default
2733 arguments and ellipsis parameter lists, we should consider those
2734 and rank the length-match more finely. */
2736 LENGTH_MATCH (bv) = (nargs != nparms)
2737 ? LENGTH_MISMATCH_BADNESS
2738 : EXACT_MATCH_BADNESS;
2740 /* Now rank all the parameters of the candidate function. */
2741 for (i = 1; i <= min_len; i++)
2742 bv->rank[i] = rank_one_type (parms[i - 1], value_type (args[i - 1]),
2745 /* If more arguments than parameters, add dummy entries. */
2746 for (i = min_len + 1; i <= nargs; i++)
2747 bv->rank[i] = TOO_FEW_PARAMS_BADNESS;
2752 /* Compare the names of two integer types, assuming that any sign
2753 qualifiers have been checked already. We do it this way because
2754 there may be an "int" in the name of one of the types. */
2757 integer_types_same_name_p (const char *first, const char *second)
2759 int first_p, second_p;
2761 /* If both are shorts, return 1; if neither is a short, keep
2763 first_p = (strstr (first, "short") != NULL);
2764 second_p = (strstr (second, "short") != NULL);
2765 if (first_p && second_p)
2767 if (first_p || second_p)
2770 /* Likewise for long. */
2771 first_p = (strstr (first, "long") != NULL);
2772 second_p = (strstr (second, "long") != NULL);
2773 if (first_p && second_p)
2775 if (first_p || second_p)
2778 /* Likewise for char. */
2779 first_p = (strstr (first, "char") != NULL);
2780 second_p = (strstr (second, "char") != NULL);
2781 if (first_p && second_p)
2783 if (first_p || second_p)
2786 /* They must both be ints. */
2790 /* Compares type A to type B returns 1 if the represent the same type
2794 types_equal (struct type *a, struct type *b)
2796 /* Identical type pointers. */
2797 /* However, this still doesn't catch all cases of same type for b
2798 and a. The reason is that builtin types are different from
2799 the same ones constructed from the object. */
2803 /* Resolve typedefs */
2804 if (TYPE_CODE (a) == TYPE_CODE_TYPEDEF)
2805 a = check_typedef (a);
2806 if (TYPE_CODE (b) == TYPE_CODE_TYPEDEF)
2807 b = check_typedef (b);
2809 /* If after resolving typedefs a and b are not of the same type
2810 code then they are not equal. */
2811 if (TYPE_CODE (a) != TYPE_CODE (b))
2814 /* If a and b are both pointers types or both reference types then
2815 they are equal of the same type iff the objects they refer to are
2816 of the same type. */
2817 if (TYPE_CODE (a) == TYPE_CODE_PTR
2818 || TYPE_CODE (a) == TYPE_CODE_REF)
2819 return types_equal (TYPE_TARGET_TYPE (a),
2820 TYPE_TARGET_TYPE (b));
2822 /* Well, damnit, if the names are exactly the same, I'll say they
2823 are exactly the same. This happens when we generate method
2824 stubs. The types won't point to the same address, but they
2825 really are the same. */
2827 if (TYPE_NAME (a) && TYPE_NAME (b)
2828 && strcmp (TYPE_NAME (a), TYPE_NAME (b)) == 0)
2831 /* Check if identical after resolving typedefs. */
2835 /* Two function types are equal if their argument and return types
2837 if (TYPE_CODE (a) == TYPE_CODE_FUNC)
2841 if (TYPE_NFIELDS (a) != TYPE_NFIELDS (b))
2844 if (!types_equal (TYPE_TARGET_TYPE (a), TYPE_TARGET_TYPE (b)))
2847 for (i = 0; i < TYPE_NFIELDS (a); ++i)
2848 if (!types_equal (TYPE_FIELD_TYPE (a, i), TYPE_FIELD_TYPE (b, i)))
2857 /* Deep comparison of types. */
2859 /* An entry in the type-equality bcache. */
2861 typedef struct type_equality_entry
2863 struct type *type1, *type2;
2864 } type_equality_entry_d;
2866 DEF_VEC_O (type_equality_entry_d);
2868 /* A helper function to compare two strings. Returns 1 if they are
2869 the same, 0 otherwise. Handles NULLs properly. */
2872 compare_maybe_null_strings (const char *s, const char *t)
2874 if (s == NULL && t != NULL)
2876 else if (s != NULL && t == NULL)
2878 else if (s == NULL && t== NULL)
2880 return strcmp (s, t) == 0;
2883 /* A helper function for check_types_worklist that checks two types for
2884 "deep" equality. Returns non-zero if the types are considered the
2885 same, zero otherwise. */
2888 check_types_equal (struct type *type1, struct type *type2,
2889 VEC (type_equality_entry_d) **worklist)
2891 CHECK_TYPEDEF (type1);
2892 CHECK_TYPEDEF (type2);
2897 if (TYPE_CODE (type1) != TYPE_CODE (type2)
2898 || TYPE_LENGTH (type1) != TYPE_LENGTH (type2)
2899 || TYPE_UNSIGNED (type1) != TYPE_UNSIGNED (type2)
2900 || TYPE_NOSIGN (type1) != TYPE_NOSIGN (type2)
2901 || TYPE_VARARGS (type1) != TYPE_VARARGS (type2)
2902 || TYPE_VECTOR (type1) != TYPE_VECTOR (type2)
2903 || TYPE_NOTTEXT (type1) != TYPE_NOTTEXT (type2)
2904 || TYPE_INSTANCE_FLAGS (type1) != TYPE_INSTANCE_FLAGS (type2)
2905 || TYPE_NFIELDS (type1) != TYPE_NFIELDS (type2))
2908 if (!compare_maybe_null_strings (TYPE_TAG_NAME (type1),
2909 TYPE_TAG_NAME (type2)))
2911 if (!compare_maybe_null_strings (TYPE_NAME (type1), TYPE_NAME (type2)))
2914 if (TYPE_CODE (type1) == TYPE_CODE_RANGE)
2916 if (memcmp (TYPE_RANGE_DATA (type1), TYPE_RANGE_DATA (type2),
2917 sizeof (*TYPE_RANGE_DATA (type1))) != 0)
2924 for (i = 0; i < TYPE_NFIELDS (type1); ++i)
2926 const struct field *field1 = &TYPE_FIELD (type1, i);
2927 const struct field *field2 = &TYPE_FIELD (type2, i);
2928 struct type_equality_entry entry;
2930 if (FIELD_ARTIFICIAL (*field1) != FIELD_ARTIFICIAL (*field2)
2931 || FIELD_BITSIZE (*field1) != FIELD_BITSIZE (*field2)
2932 || FIELD_LOC_KIND (*field1) != FIELD_LOC_KIND (*field2))
2934 if (!compare_maybe_null_strings (FIELD_NAME (*field1),
2935 FIELD_NAME (*field2)))
2937 switch (FIELD_LOC_KIND (*field1))
2939 case FIELD_LOC_KIND_BITPOS:
2940 if (FIELD_BITPOS (*field1) != FIELD_BITPOS (*field2))
2943 case FIELD_LOC_KIND_ENUMVAL:
2944 if (FIELD_ENUMVAL (*field1) != FIELD_ENUMVAL (*field2))
2947 case FIELD_LOC_KIND_PHYSADDR:
2948 if (FIELD_STATIC_PHYSADDR (*field1)
2949 != FIELD_STATIC_PHYSADDR (*field2))
2952 case FIELD_LOC_KIND_PHYSNAME:
2953 if (!compare_maybe_null_strings (FIELD_STATIC_PHYSNAME (*field1),
2954 FIELD_STATIC_PHYSNAME (*field2)))
2957 case FIELD_LOC_KIND_DWARF_BLOCK:
2959 struct dwarf2_locexpr_baton *block1, *block2;
2961 block1 = FIELD_DWARF_BLOCK (*field1);
2962 block2 = FIELD_DWARF_BLOCK (*field2);
2963 if (block1->per_cu != block2->per_cu
2964 || block1->size != block2->size
2965 || memcmp (block1->data, block2->data, block1->size) != 0)
2970 internal_error (__FILE__, __LINE__, _("Unsupported field kind "
2971 "%d by check_types_equal"),
2972 FIELD_LOC_KIND (*field1));
2975 entry.type1 = FIELD_TYPE (*field1);
2976 entry.type2 = FIELD_TYPE (*field2);
2977 VEC_safe_push (type_equality_entry_d, *worklist, &entry);
2981 if (TYPE_TARGET_TYPE (type1) != NULL)
2983 struct type_equality_entry entry;
2985 if (TYPE_TARGET_TYPE (type2) == NULL)
2988 entry.type1 = TYPE_TARGET_TYPE (type1);
2989 entry.type2 = TYPE_TARGET_TYPE (type2);
2990 VEC_safe_push (type_equality_entry_d, *worklist, &entry);
2992 else if (TYPE_TARGET_TYPE (type2) != NULL)
2998 /* Check types on a worklist for equality. Returns zero if any pair
2999 is not equal, non-zero if they are all considered equal. */
3002 check_types_worklist (VEC (type_equality_entry_d) **worklist,
3003 struct bcache *cache)
3005 while (!VEC_empty (type_equality_entry_d, *worklist))
3007 struct type_equality_entry entry;
3010 entry = *VEC_last (type_equality_entry_d, *worklist);
3011 VEC_pop (type_equality_entry_d, *worklist);
3013 /* If the type pair has already been visited, we know it is
3015 bcache_full (&entry, sizeof (entry), cache, &added);
3019 if (check_types_equal (entry.type1, entry.type2, worklist) == 0)
3026 /* Return non-zero if types TYPE1 and TYPE2 are equal, as determined by a
3027 "deep comparison". Otherwise return zero. */
3030 types_deeply_equal (struct type *type1, struct type *type2)
3032 volatile struct gdb_exception except;
3034 struct bcache *cache;
3035 VEC (type_equality_entry_d) *worklist = NULL;
3036 struct type_equality_entry entry;
3038 gdb_assert (type1 != NULL && type2 != NULL);
3040 /* Early exit for the simple case. */
3044 cache = bcache_xmalloc (NULL, NULL);
3046 entry.type1 = type1;
3047 entry.type2 = type2;
3048 VEC_safe_push (type_equality_entry_d, worklist, &entry);
3050 TRY_CATCH (except, RETURN_MASK_ALL)
3052 result = check_types_worklist (&worklist, cache);
3054 /* check_types_worklist calls several nested helper functions,
3055 some of which can raise a GDB Exception, so we just check
3056 and rethrow here. If there is a GDB exception, a comparison
3057 is not capable (or trusted), so exit. */
3058 bcache_xfree (cache);
3059 VEC_free (type_equality_entry_d, worklist);
3060 /* Rethrow if there was a problem. */
3061 if (except.reason < 0)
3062 throw_exception (except);
3067 /* Compare one type (PARM) for compatibility with another (ARG).
3068 * PARM is intended to be the parameter type of a function; and
3069 * ARG is the supplied argument's type. This function tests if
3070 * the latter can be converted to the former.
3071 * VALUE is the argument's value or NULL if none (or called recursively)
3073 * Return 0 if they are identical types;
3074 * Otherwise, return an integer which corresponds to how compatible
3075 * PARM is to ARG. The higher the return value, the worse the match.
3076 * Generally the "bad" conversions are all uniformly assigned a 100. */
3079 rank_one_type (struct type *parm, struct type *arg, struct value *value)
3081 struct rank rank = {0,0};
3083 if (types_equal (parm, arg))
3084 return EXACT_MATCH_BADNESS;
3086 /* Resolve typedefs */
3087 if (TYPE_CODE (parm) == TYPE_CODE_TYPEDEF)
3088 parm = check_typedef (parm);
3089 if (TYPE_CODE (arg) == TYPE_CODE_TYPEDEF)
3090 arg = check_typedef (arg);
3092 /* See through references, since we can almost make non-references
3094 if (TYPE_CODE (arg) == TYPE_CODE_REF)
3095 return (sum_ranks (rank_one_type (parm, TYPE_TARGET_TYPE (arg), NULL),
3096 REFERENCE_CONVERSION_BADNESS));
3097 if (TYPE_CODE (parm) == TYPE_CODE_REF)
3098 return (sum_ranks (rank_one_type (TYPE_TARGET_TYPE (parm), arg, NULL),
3099 REFERENCE_CONVERSION_BADNESS));
3101 /* Debugging only. */
3102 fprintf_filtered (gdb_stderr,
3103 "------ Arg is %s [%d], parm is %s [%d]\n",
3104 TYPE_NAME (arg), TYPE_CODE (arg),
3105 TYPE_NAME (parm), TYPE_CODE (parm));
3107 /* x -> y means arg of type x being supplied for parameter of type y. */
3109 switch (TYPE_CODE (parm))
3112 switch (TYPE_CODE (arg))
3116 /* Allowed pointer conversions are:
3117 (a) pointer to void-pointer conversion. */
3118 if (TYPE_CODE (TYPE_TARGET_TYPE (parm)) == TYPE_CODE_VOID)
3119 return VOID_PTR_CONVERSION_BADNESS;
3121 /* (b) pointer to ancestor-pointer conversion. */
3122 rank.subrank = distance_to_ancestor (TYPE_TARGET_TYPE (parm),
3123 TYPE_TARGET_TYPE (arg),
3125 if (rank.subrank >= 0)
3126 return sum_ranks (BASE_PTR_CONVERSION_BADNESS, rank);
3128 return INCOMPATIBLE_TYPE_BADNESS;
3129 case TYPE_CODE_ARRAY:
3130 if (types_equal (TYPE_TARGET_TYPE (parm),
3131 TYPE_TARGET_TYPE (arg)))
3132 return EXACT_MATCH_BADNESS;
3133 return INCOMPATIBLE_TYPE_BADNESS;
3134 case TYPE_CODE_FUNC:
3135 return rank_one_type (TYPE_TARGET_TYPE (parm), arg, NULL);
3137 if (value != NULL && TYPE_CODE (value_type (value)) == TYPE_CODE_INT)
3139 if (value_as_long (value) == 0)
3141 /* Null pointer conversion: allow it to be cast to a pointer.
3142 [4.10.1 of C++ standard draft n3290] */
3143 return NULL_POINTER_CONVERSION_BADNESS;
3147 /* If type checking is disabled, allow the conversion. */
3148 if (!strict_type_checking)
3149 return NS_INTEGER_POINTER_CONVERSION_BADNESS;
3153 case TYPE_CODE_ENUM:
3154 case TYPE_CODE_FLAGS:
3155 case TYPE_CODE_CHAR:
3156 case TYPE_CODE_RANGE:
3157 case TYPE_CODE_BOOL:
3159 return INCOMPATIBLE_TYPE_BADNESS;
3161 case TYPE_CODE_ARRAY:
3162 switch (TYPE_CODE (arg))
3165 case TYPE_CODE_ARRAY:
3166 return rank_one_type (TYPE_TARGET_TYPE (parm),
3167 TYPE_TARGET_TYPE (arg), NULL);
3169 return INCOMPATIBLE_TYPE_BADNESS;
3171 case TYPE_CODE_FUNC:
3172 switch (TYPE_CODE (arg))
3174 case TYPE_CODE_PTR: /* funcptr -> func */
3175 return rank_one_type (parm, TYPE_TARGET_TYPE (arg), NULL);
3177 return INCOMPATIBLE_TYPE_BADNESS;
3180 switch (TYPE_CODE (arg))
3183 if (TYPE_LENGTH (arg) == TYPE_LENGTH (parm))
3185 /* Deal with signed, unsigned, and plain chars and
3186 signed and unsigned ints. */
3187 if (TYPE_NOSIGN (parm))
3189 /* This case only for character types. */
3190 if (TYPE_NOSIGN (arg))
3191 return EXACT_MATCH_BADNESS; /* plain char -> plain char */
3192 else /* signed/unsigned char -> plain char */
3193 return INTEGER_CONVERSION_BADNESS;
3195 else if (TYPE_UNSIGNED (parm))
3197 if (TYPE_UNSIGNED (arg))
3199 /* unsigned int -> unsigned int, or
3200 unsigned long -> unsigned long */
3201 if (integer_types_same_name_p (TYPE_NAME (parm),
3203 return EXACT_MATCH_BADNESS;
3204 else if (integer_types_same_name_p (TYPE_NAME (arg),
3206 && integer_types_same_name_p (TYPE_NAME (parm),
3208 /* unsigned int -> unsigned long */
3209 return INTEGER_PROMOTION_BADNESS;
3211 /* unsigned long -> unsigned int */
3212 return INTEGER_CONVERSION_BADNESS;
3216 if (integer_types_same_name_p (TYPE_NAME (arg),
3218 && integer_types_same_name_p (TYPE_NAME (parm),
3220 /* signed long -> unsigned int */
3221 return INTEGER_CONVERSION_BADNESS;
3223 /* signed int/long -> unsigned int/long */
3224 return INTEGER_CONVERSION_BADNESS;
3227 else if (!TYPE_NOSIGN (arg) && !TYPE_UNSIGNED (arg))
3229 if (integer_types_same_name_p (TYPE_NAME (parm),
3231 return EXACT_MATCH_BADNESS;
3232 else if (integer_types_same_name_p (TYPE_NAME (arg),
3234 && integer_types_same_name_p (TYPE_NAME (parm),
3236 return INTEGER_PROMOTION_BADNESS;
3238 return INTEGER_CONVERSION_BADNESS;
3241 return INTEGER_CONVERSION_BADNESS;
3243 else if (TYPE_LENGTH (arg) < TYPE_LENGTH (parm))
3244 return INTEGER_PROMOTION_BADNESS;
3246 return INTEGER_CONVERSION_BADNESS;
3247 case TYPE_CODE_ENUM:
3248 case TYPE_CODE_FLAGS:
3249 case TYPE_CODE_CHAR:
3250 case TYPE_CODE_RANGE:
3251 case TYPE_CODE_BOOL:
3252 if (TYPE_DECLARED_CLASS (arg))
3253 return INCOMPATIBLE_TYPE_BADNESS;
3254 return INTEGER_PROMOTION_BADNESS;
3256 return INT_FLOAT_CONVERSION_BADNESS;
3258 return NS_POINTER_CONVERSION_BADNESS;
3260 return INCOMPATIBLE_TYPE_BADNESS;
3263 case TYPE_CODE_ENUM:
3264 switch (TYPE_CODE (arg))
3267 case TYPE_CODE_CHAR:
3268 case TYPE_CODE_RANGE:
3269 case TYPE_CODE_BOOL:
3270 case TYPE_CODE_ENUM:
3271 if (TYPE_DECLARED_CLASS (parm) || TYPE_DECLARED_CLASS (arg))
3272 return INCOMPATIBLE_TYPE_BADNESS;
3273 return INTEGER_CONVERSION_BADNESS;
3275 return INT_FLOAT_CONVERSION_BADNESS;
3277 return INCOMPATIBLE_TYPE_BADNESS;
3280 case TYPE_CODE_CHAR:
3281 switch (TYPE_CODE (arg))
3283 case TYPE_CODE_RANGE:
3284 case TYPE_CODE_BOOL:
3285 case TYPE_CODE_ENUM:
3286 if (TYPE_DECLARED_CLASS (arg))
3287 return INCOMPATIBLE_TYPE_BADNESS;
3288 return INTEGER_CONVERSION_BADNESS;
3290 return INT_FLOAT_CONVERSION_BADNESS;
3292 if (TYPE_LENGTH (arg) > TYPE_LENGTH (parm))
3293 return INTEGER_CONVERSION_BADNESS;
3294 else if (TYPE_LENGTH (arg) < TYPE_LENGTH (parm))
3295 return INTEGER_PROMOTION_BADNESS;
3296 /* >>> !! else fall through !! <<< */
3297 case TYPE_CODE_CHAR:
3298 /* Deal with signed, unsigned, and plain chars for C++ and
3299 with int cases falling through from previous case. */
3300 if (TYPE_NOSIGN (parm))
3302 if (TYPE_NOSIGN (arg))
3303 return EXACT_MATCH_BADNESS;
3305 return INTEGER_CONVERSION_BADNESS;
3307 else if (TYPE_UNSIGNED (parm))
3309 if (TYPE_UNSIGNED (arg))
3310 return EXACT_MATCH_BADNESS;
3312 return INTEGER_PROMOTION_BADNESS;
3314 else if (!TYPE_NOSIGN (arg) && !TYPE_UNSIGNED (arg))
3315 return EXACT_MATCH_BADNESS;
3317 return INTEGER_CONVERSION_BADNESS;
3319 return INCOMPATIBLE_TYPE_BADNESS;
3322 case TYPE_CODE_RANGE:
3323 switch (TYPE_CODE (arg))
3326 case TYPE_CODE_CHAR:
3327 case TYPE_CODE_RANGE:
3328 case TYPE_CODE_BOOL:
3329 case TYPE_CODE_ENUM:
3330 return INTEGER_CONVERSION_BADNESS;
3332 return INT_FLOAT_CONVERSION_BADNESS;
3334 return INCOMPATIBLE_TYPE_BADNESS;
3337 case TYPE_CODE_BOOL:
3338 switch (TYPE_CODE (arg))
3340 /* n3290 draft, section 4.12.1 (conv.bool):
3342 "A prvalue of arithmetic, unscoped enumeration, pointer, or
3343 pointer to member type can be converted to a prvalue of type
3344 bool. A zero value, null pointer value, or null member pointer
3345 value is converted to false; any other value is converted to
3346 true. A prvalue of type std::nullptr_t can be converted to a
3347 prvalue of type bool; the resulting value is false." */
3349 case TYPE_CODE_CHAR:
3350 case TYPE_CODE_ENUM:
3352 case TYPE_CODE_MEMBERPTR:
3354 return BOOL_CONVERSION_BADNESS;
3355 case TYPE_CODE_RANGE:
3356 return INCOMPATIBLE_TYPE_BADNESS;
3357 case TYPE_CODE_BOOL:
3358 return EXACT_MATCH_BADNESS;
3360 return INCOMPATIBLE_TYPE_BADNESS;
3364 switch (TYPE_CODE (arg))
3367 if (TYPE_LENGTH (arg) < TYPE_LENGTH (parm))
3368 return FLOAT_PROMOTION_BADNESS;
3369 else if (TYPE_LENGTH (arg) == TYPE_LENGTH (parm))
3370 return EXACT_MATCH_BADNESS;
3372 return FLOAT_CONVERSION_BADNESS;
3374 case TYPE_CODE_BOOL:
3375 case TYPE_CODE_ENUM:
3376 case TYPE_CODE_RANGE:
3377 case TYPE_CODE_CHAR:
3378 return INT_FLOAT_CONVERSION_BADNESS;
3380 return INCOMPATIBLE_TYPE_BADNESS;
3383 case TYPE_CODE_COMPLEX:
3384 switch (TYPE_CODE (arg))
3385 { /* Strictly not needed for C++, but... */
3387 return FLOAT_PROMOTION_BADNESS;
3388 case TYPE_CODE_COMPLEX:
3389 return EXACT_MATCH_BADNESS;
3391 return INCOMPATIBLE_TYPE_BADNESS;
3394 case TYPE_CODE_STRUCT:
3395 /* currently same as TYPE_CODE_CLASS. */
3396 switch (TYPE_CODE (arg))
3398 case TYPE_CODE_STRUCT:
3399 /* Check for derivation */
3400 rank.subrank = distance_to_ancestor (parm, arg, 0);
3401 if (rank.subrank >= 0)
3402 return sum_ranks (BASE_CONVERSION_BADNESS, rank);
3403 /* else fall through */
3405 return INCOMPATIBLE_TYPE_BADNESS;
3408 case TYPE_CODE_UNION:
3409 switch (TYPE_CODE (arg))
3411 case TYPE_CODE_UNION:
3413 return INCOMPATIBLE_TYPE_BADNESS;
3416 case TYPE_CODE_MEMBERPTR:
3417 switch (TYPE_CODE (arg))
3420 return INCOMPATIBLE_TYPE_BADNESS;
3423 case TYPE_CODE_METHOD:
3424 switch (TYPE_CODE (arg))
3428 return INCOMPATIBLE_TYPE_BADNESS;
3432 switch (TYPE_CODE (arg))
3436 return INCOMPATIBLE_TYPE_BADNESS;
3441 switch (TYPE_CODE (arg))
3445 return rank_one_type (TYPE_FIELD_TYPE (parm, 0),
3446 TYPE_FIELD_TYPE (arg, 0), NULL);
3448 return INCOMPATIBLE_TYPE_BADNESS;
3451 case TYPE_CODE_VOID:
3453 return INCOMPATIBLE_TYPE_BADNESS;
3454 } /* switch (TYPE_CODE (arg)) */
3457 /* End of functions for overload resolution. */
3459 /* Routines to pretty-print types. */
3462 print_bit_vector (B_TYPE *bits, int nbits)
3466 for (bitno = 0; bitno < nbits; bitno++)
3468 if ((bitno % 8) == 0)
3470 puts_filtered (" ");
3472 if (B_TST (bits, bitno))
3473 printf_filtered (("1"));
3475 printf_filtered (("0"));
3479 /* Note the first arg should be the "this" pointer, we may not want to
3480 include it since we may get into a infinitely recursive
3484 print_arg_types (struct field *args, int nargs, int spaces)
3490 for (i = 0; i < nargs; i++)
3491 recursive_dump_type (args[i].type, spaces + 2);
3496 field_is_static (struct field *f)
3498 /* "static" fields are the fields whose location is not relative
3499 to the address of the enclosing struct. It would be nice to
3500 have a dedicated flag that would be set for static fields when
3501 the type is being created. But in practice, checking the field
3502 loc_kind should give us an accurate answer. */
3503 return (FIELD_LOC_KIND (*f) == FIELD_LOC_KIND_PHYSNAME
3504 || FIELD_LOC_KIND (*f) == FIELD_LOC_KIND_PHYSADDR);
3508 dump_fn_fieldlists (struct type *type, int spaces)
3514 printfi_filtered (spaces, "fn_fieldlists ");
3515 gdb_print_host_address (TYPE_FN_FIELDLISTS (type), gdb_stdout);
3516 printf_filtered ("\n");
3517 for (method_idx = 0; method_idx < TYPE_NFN_FIELDS (type); method_idx++)
3519 f = TYPE_FN_FIELDLIST1 (type, method_idx);
3520 printfi_filtered (spaces + 2, "[%d] name '%s' (",
3522 TYPE_FN_FIELDLIST_NAME (type, method_idx));
3523 gdb_print_host_address (TYPE_FN_FIELDLIST_NAME (type, method_idx),
3525 printf_filtered (_(") length %d\n"),
3526 TYPE_FN_FIELDLIST_LENGTH (type, method_idx));
3527 for (overload_idx = 0;
3528 overload_idx < TYPE_FN_FIELDLIST_LENGTH (type, method_idx);
3531 printfi_filtered (spaces + 4, "[%d] physname '%s' (",
3533 TYPE_FN_FIELD_PHYSNAME (f, overload_idx));
3534 gdb_print_host_address (TYPE_FN_FIELD_PHYSNAME (f, overload_idx),
3536 printf_filtered (")\n");
3537 printfi_filtered (spaces + 8, "type ");
3538 gdb_print_host_address (TYPE_FN_FIELD_TYPE (f, overload_idx),
3540 printf_filtered ("\n");
3542 recursive_dump_type (TYPE_FN_FIELD_TYPE (f, overload_idx),
3545 printfi_filtered (spaces + 8, "args ");
3546 gdb_print_host_address (TYPE_FN_FIELD_ARGS (f, overload_idx),
3548 printf_filtered ("\n");
3550 print_arg_types (TYPE_FN_FIELD_ARGS (f, overload_idx),
3551 TYPE_NFIELDS (TYPE_FN_FIELD_TYPE (f,
3554 printfi_filtered (spaces + 8, "fcontext ");
3555 gdb_print_host_address (TYPE_FN_FIELD_FCONTEXT (f, overload_idx),
3557 printf_filtered ("\n");
3559 printfi_filtered (spaces + 8, "is_const %d\n",
3560 TYPE_FN_FIELD_CONST (f, overload_idx));
3561 printfi_filtered (spaces + 8, "is_volatile %d\n",
3562 TYPE_FN_FIELD_VOLATILE (f, overload_idx));
3563 printfi_filtered (spaces + 8, "is_private %d\n",
3564 TYPE_FN_FIELD_PRIVATE (f, overload_idx));
3565 printfi_filtered (spaces + 8, "is_protected %d\n",
3566 TYPE_FN_FIELD_PROTECTED (f, overload_idx));
3567 printfi_filtered (spaces + 8, "is_stub %d\n",
3568 TYPE_FN_FIELD_STUB (f, overload_idx));
3569 printfi_filtered (spaces + 8, "voffset %u\n",
3570 TYPE_FN_FIELD_VOFFSET (f, overload_idx));
3576 print_cplus_stuff (struct type *type, int spaces)
3578 printfi_filtered (spaces, "n_baseclasses %d\n",
3579 TYPE_N_BASECLASSES (type));
3580 printfi_filtered (spaces, "nfn_fields %d\n",
3581 TYPE_NFN_FIELDS (type));
3582 if (TYPE_N_BASECLASSES (type) > 0)
3584 printfi_filtered (spaces, "virtual_field_bits (%d bits at *",
3585 TYPE_N_BASECLASSES (type));
3586 gdb_print_host_address (TYPE_FIELD_VIRTUAL_BITS (type),
3588 printf_filtered (")");
3590 print_bit_vector (TYPE_FIELD_VIRTUAL_BITS (type),
3591 TYPE_N_BASECLASSES (type));
3592 puts_filtered ("\n");
3594 if (TYPE_NFIELDS (type) > 0)
3596 if (TYPE_FIELD_PRIVATE_BITS (type) != NULL)
3598 printfi_filtered (spaces,
3599 "private_field_bits (%d bits at *",
3600 TYPE_NFIELDS (type));
3601 gdb_print_host_address (TYPE_FIELD_PRIVATE_BITS (type),
3603 printf_filtered (")");
3604 print_bit_vector (TYPE_FIELD_PRIVATE_BITS (type),
3605 TYPE_NFIELDS (type));
3606 puts_filtered ("\n");
3608 if (TYPE_FIELD_PROTECTED_BITS (type) != NULL)
3610 printfi_filtered (spaces,
3611 "protected_field_bits (%d bits at *",
3612 TYPE_NFIELDS (type));
3613 gdb_print_host_address (TYPE_FIELD_PROTECTED_BITS (type),
3615 printf_filtered (")");
3616 print_bit_vector (TYPE_FIELD_PROTECTED_BITS (type),
3617 TYPE_NFIELDS (type));
3618 puts_filtered ("\n");
3621 if (TYPE_NFN_FIELDS (type) > 0)
3623 dump_fn_fieldlists (type, spaces);
3627 /* Print the contents of the TYPE's type_specific union, assuming that
3628 its type-specific kind is TYPE_SPECIFIC_GNAT_STUFF. */
3631 print_gnat_stuff (struct type *type, int spaces)
3633 struct type *descriptive_type = TYPE_DESCRIPTIVE_TYPE (type);
3635 recursive_dump_type (descriptive_type, spaces + 2);
3638 static struct obstack dont_print_type_obstack;
3641 recursive_dump_type (struct type *type, int spaces)
3646 obstack_begin (&dont_print_type_obstack, 0);
3648 if (TYPE_NFIELDS (type) > 0
3649 || (HAVE_CPLUS_STRUCT (type) && TYPE_NFN_FIELDS (type) > 0))
3651 struct type **first_dont_print
3652 = (struct type **) obstack_base (&dont_print_type_obstack);
3654 int i = (struct type **)
3655 obstack_next_free (&dont_print_type_obstack) - first_dont_print;
3659 if (type == first_dont_print[i])
3661 printfi_filtered (spaces, "type node ");
3662 gdb_print_host_address (type, gdb_stdout);
3663 printf_filtered (_(" <same as already seen type>\n"));
3668 obstack_ptr_grow (&dont_print_type_obstack, type);
3671 printfi_filtered (spaces, "type node ");
3672 gdb_print_host_address (type, gdb_stdout);
3673 printf_filtered ("\n");
3674 printfi_filtered (spaces, "name '%s' (",
3675 TYPE_NAME (type) ? TYPE_NAME (type) : "<NULL>");
3676 gdb_print_host_address (TYPE_NAME (type), gdb_stdout);
3677 printf_filtered (")\n");
3678 printfi_filtered (spaces, "tagname '%s' (",
3679 TYPE_TAG_NAME (type) ? TYPE_TAG_NAME (type) : "<NULL>");
3680 gdb_print_host_address (TYPE_TAG_NAME (type), gdb_stdout);
3681 printf_filtered (")\n");
3682 printfi_filtered (spaces, "code 0x%x ", TYPE_CODE (type));
3683 switch (TYPE_CODE (type))
3685 case TYPE_CODE_UNDEF:
3686 printf_filtered ("(TYPE_CODE_UNDEF)");
3689 printf_filtered ("(TYPE_CODE_PTR)");
3691 case TYPE_CODE_ARRAY:
3692 printf_filtered ("(TYPE_CODE_ARRAY)");
3694 case TYPE_CODE_STRUCT:
3695 printf_filtered ("(TYPE_CODE_STRUCT)");
3697 case TYPE_CODE_UNION:
3698 printf_filtered ("(TYPE_CODE_UNION)");
3700 case TYPE_CODE_ENUM:
3701 printf_filtered ("(TYPE_CODE_ENUM)");
3703 case TYPE_CODE_FLAGS:
3704 printf_filtered ("(TYPE_CODE_FLAGS)");
3706 case TYPE_CODE_FUNC:
3707 printf_filtered ("(TYPE_CODE_FUNC)");
3710 printf_filtered ("(TYPE_CODE_INT)");
3713 printf_filtered ("(TYPE_CODE_FLT)");
3715 case TYPE_CODE_VOID:
3716 printf_filtered ("(TYPE_CODE_VOID)");
3719 printf_filtered ("(TYPE_CODE_SET)");
3721 case TYPE_CODE_RANGE:
3722 printf_filtered ("(TYPE_CODE_RANGE)");
3724 case TYPE_CODE_STRING:
3725 printf_filtered ("(TYPE_CODE_STRING)");
3727 case TYPE_CODE_ERROR:
3728 printf_filtered ("(TYPE_CODE_ERROR)");
3730 case TYPE_CODE_MEMBERPTR:
3731 printf_filtered ("(TYPE_CODE_MEMBERPTR)");
3733 case TYPE_CODE_METHODPTR:
3734 printf_filtered ("(TYPE_CODE_METHODPTR)");
3736 case TYPE_CODE_METHOD:
3737 printf_filtered ("(TYPE_CODE_METHOD)");
3740 printf_filtered ("(TYPE_CODE_REF)");
3742 case TYPE_CODE_CHAR:
3743 printf_filtered ("(TYPE_CODE_CHAR)");
3745 case TYPE_CODE_BOOL:
3746 printf_filtered ("(TYPE_CODE_BOOL)");
3748 case TYPE_CODE_COMPLEX:
3749 printf_filtered ("(TYPE_CODE_COMPLEX)");
3751 case TYPE_CODE_TYPEDEF:
3752 printf_filtered ("(TYPE_CODE_TYPEDEF)");
3754 case TYPE_CODE_NAMESPACE:
3755 printf_filtered ("(TYPE_CODE_NAMESPACE)");
3758 printf_filtered ("(UNKNOWN TYPE CODE)");
3761 puts_filtered ("\n");
3762 printfi_filtered (spaces, "length %d\n", TYPE_LENGTH (type));
3763 if (TYPE_OBJFILE_OWNED (type))
3765 printfi_filtered (spaces, "objfile ");
3766 gdb_print_host_address (TYPE_OWNER (type).objfile, gdb_stdout);
3770 printfi_filtered (spaces, "gdbarch ");
3771 gdb_print_host_address (TYPE_OWNER (type).gdbarch, gdb_stdout);
3773 printf_filtered ("\n");
3774 printfi_filtered (spaces, "target_type ");
3775 gdb_print_host_address (TYPE_TARGET_TYPE (type), gdb_stdout);
3776 printf_filtered ("\n");
3777 if (TYPE_TARGET_TYPE (type) != NULL)
3779 recursive_dump_type (TYPE_TARGET_TYPE (type), spaces + 2);
3781 printfi_filtered (spaces, "pointer_type ");
3782 gdb_print_host_address (TYPE_POINTER_TYPE (type), gdb_stdout);
3783 printf_filtered ("\n");
3784 printfi_filtered (spaces, "reference_type ");
3785 gdb_print_host_address (TYPE_REFERENCE_TYPE (type), gdb_stdout);
3786 printf_filtered ("\n");
3787 printfi_filtered (spaces, "type_chain ");
3788 gdb_print_host_address (TYPE_CHAIN (type), gdb_stdout);
3789 printf_filtered ("\n");
3790 printfi_filtered (spaces, "instance_flags 0x%x",
3791 TYPE_INSTANCE_FLAGS (type));
3792 if (TYPE_CONST (type))
3794 puts_filtered (" TYPE_FLAG_CONST");
3796 if (TYPE_VOLATILE (type))
3798 puts_filtered (" TYPE_FLAG_VOLATILE");
3800 if (TYPE_CODE_SPACE (type))
3802 puts_filtered (" TYPE_FLAG_CODE_SPACE");
3804 if (TYPE_DATA_SPACE (type))
3806 puts_filtered (" TYPE_FLAG_DATA_SPACE");
3808 if (TYPE_ADDRESS_CLASS_1 (type))
3810 puts_filtered (" TYPE_FLAG_ADDRESS_CLASS_1");
3812 if (TYPE_ADDRESS_CLASS_2 (type))
3814 puts_filtered (" TYPE_FLAG_ADDRESS_CLASS_2");
3816 if (TYPE_RESTRICT (type))
3818 puts_filtered (" TYPE_FLAG_RESTRICT");
3820 puts_filtered ("\n");
3822 printfi_filtered (spaces, "flags");
3823 if (TYPE_UNSIGNED (type))
3825 puts_filtered (" TYPE_FLAG_UNSIGNED");
3827 if (TYPE_NOSIGN (type))
3829 puts_filtered (" TYPE_FLAG_NOSIGN");
3831 if (TYPE_STUB (type))
3833 puts_filtered (" TYPE_FLAG_STUB");
3835 if (TYPE_TARGET_STUB (type))
3837 puts_filtered (" TYPE_FLAG_TARGET_STUB");
3839 if (TYPE_STATIC (type))
3841 puts_filtered (" TYPE_FLAG_STATIC");
3843 if (TYPE_PROTOTYPED (type))
3845 puts_filtered (" TYPE_FLAG_PROTOTYPED");
3847 if (TYPE_INCOMPLETE (type))
3849 puts_filtered (" TYPE_FLAG_INCOMPLETE");
3851 if (TYPE_VARARGS (type))
3853 puts_filtered (" TYPE_FLAG_VARARGS");
3855 /* This is used for things like AltiVec registers on ppc. Gcc emits
3856 an attribute for the array type, which tells whether or not we
3857 have a vector, instead of a regular array. */
3858 if (TYPE_VECTOR (type))
3860 puts_filtered (" TYPE_FLAG_VECTOR");
3862 if (TYPE_FIXED_INSTANCE (type))
3864 puts_filtered (" TYPE_FIXED_INSTANCE");
3866 if (TYPE_STUB_SUPPORTED (type))
3868 puts_filtered (" TYPE_STUB_SUPPORTED");
3870 if (TYPE_NOTTEXT (type))
3872 puts_filtered (" TYPE_NOTTEXT");
3874 puts_filtered ("\n");
3875 printfi_filtered (spaces, "nfields %d ", TYPE_NFIELDS (type));
3876 gdb_print_host_address (TYPE_FIELDS (type), gdb_stdout);
3877 puts_filtered ("\n");
3878 for (idx = 0; idx < TYPE_NFIELDS (type); idx++)
3880 if (TYPE_CODE (type) == TYPE_CODE_ENUM)
3881 printfi_filtered (spaces + 2,
3882 "[%d] enumval %s type ",
3883 idx, plongest (TYPE_FIELD_ENUMVAL (type, idx)));
3885 printfi_filtered (spaces + 2,
3886 "[%d] bitpos %d bitsize %d type ",
3887 idx, TYPE_FIELD_BITPOS (type, idx),
3888 TYPE_FIELD_BITSIZE (type, idx));
3889 gdb_print_host_address (TYPE_FIELD_TYPE (type, idx), gdb_stdout);
3890 printf_filtered (" name '%s' (",
3891 TYPE_FIELD_NAME (type, idx) != NULL
3892 ? TYPE_FIELD_NAME (type, idx)
3894 gdb_print_host_address (TYPE_FIELD_NAME (type, idx), gdb_stdout);
3895 printf_filtered (")\n");
3896 if (TYPE_FIELD_TYPE (type, idx) != NULL)
3898 recursive_dump_type (TYPE_FIELD_TYPE (type, idx), spaces + 4);
3901 if (TYPE_CODE (type) == TYPE_CODE_RANGE)
3903 printfi_filtered (spaces, "low %s%s high %s%s\n",
3904 plongest (TYPE_LOW_BOUND (type)),
3905 TYPE_LOW_BOUND_UNDEFINED (type) ? " (undefined)" : "",
3906 plongest (TYPE_HIGH_BOUND (type)),
3907 TYPE_HIGH_BOUND_UNDEFINED (type)
3908 ? " (undefined)" : "");
3910 printfi_filtered (spaces, "vptr_basetype ");
3911 gdb_print_host_address (TYPE_VPTR_BASETYPE (type), gdb_stdout);
3912 puts_filtered ("\n");
3913 if (TYPE_VPTR_BASETYPE (type) != NULL)
3915 recursive_dump_type (TYPE_VPTR_BASETYPE (type), spaces + 2);
3917 printfi_filtered (spaces, "vptr_fieldno %d\n",
3918 TYPE_VPTR_FIELDNO (type));
3920 switch (TYPE_SPECIFIC_FIELD (type))
3922 case TYPE_SPECIFIC_CPLUS_STUFF:
3923 printfi_filtered (spaces, "cplus_stuff ");
3924 gdb_print_host_address (TYPE_CPLUS_SPECIFIC (type),
3926 puts_filtered ("\n");
3927 print_cplus_stuff (type, spaces);
3930 case TYPE_SPECIFIC_GNAT_STUFF:
3931 printfi_filtered (spaces, "gnat_stuff ");
3932 gdb_print_host_address (TYPE_GNAT_SPECIFIC (type), gdb_stdout);
3933 puts_filtered ("\n");
3934 print_gnat_stuff (type, spaces);
3937 case TYPE_SPECIFIC_FLOATFORMAT:
3938 printfi_filtered (spaces, "floatformat ");
3939 if (TYPE_FLOATFORMAT (type) == NULL)
3940 puts_filtered ("(null)");
3943 puts_filtered ("{ ");
3944 if (TYPE_FLOATFORMAT (type)[0] == NULL
3945 || TYPE_FLOATFORMAT (type)[0]->name == NULL)
3946 puts_filtered ("(null)");
3948 puts_filtered (TYPE_FLOATFORMAT (type)[0]->name);
3950 puts_filtered (", ");
3951 if (TYPE_FLOATFORMAT (type)[1] == NULL
3952 || TYPE_FLOATFORMAT (type)[1]->name == NULL)
3953 puts_filtered ("(null)");
3955 puts_filtered (TYPE_FLOATFORMAT (type)[1]->name);
3957 puts_filtered (" }");
3959 puts_filtered ("\n");
3962 case TYPE_SPECIFIC_FUNC:
3963 printfi_filtered (spaces, "calling_convention %d\n",
3964 TYPE_CALLING_CONVENTION (type));
3965 /* tail_call_list is not printed. */
3970 obstack_free (&dont_print_type_obstack, NULL);
3973 /* Trivial helpers for the libiberty hash table, for mapping one
3978 struct type *old, *new;
3982 type_pair_hash (const void *item)
3984 const struct type_pair *pair = item;
3986 return htab_hash_pointer (pair->old);
3990 type_pair_eq (const void *item_lhs, const void *item_rhs)
3992 const struct type_pair *lhs = item_lhs, *rhs = item_rhs;
3994 return lhs->old == rhs->old;
3997 /* Allocate the hash table used by copy_type_recursive to walk
3998 types without duplicates. We use OBJFILE's obstack, because
3999 OBJFILE is about to be deleted. */
4002 create_copied_types_hash (struct objfile *objfile)
4004 return htab_create_alloc_ex (1, type_pair_hash, type_pair_eq,
4005 NULL, &objfile->objfile_obstack,
4006 hashtab_obstack_allocate,
4007 dummy_obstack_deallocate);
4010 /* Recursively copy (deep copy) TYPE, if it is associated with
4011 OBJFILE. Return a new type allocated using malloc, a saved type if
4012 we have already visited TYPE (using COPIED_TYPES), or TYPE if it is
4013 not associated with OBJFILE. */
4016 copy_type_recursive (struct objfile *objfile,
4018 htab_t copied_types)
4020 struct type_pair *stored, pair;
4022 struct type *new_type;
4024 if (! TYPE_OBJFILE_OWNED (type))
4027 /* This type shouldn't be pointing to any types in other objfiles;
4028 if it did, the type might disappear unexpectedly. */
4029 gdb_assert (TYPE_OBJFILE (type) == objfile);
4032 slot = htab_find_slot (copied_types, &pair, INSERT);
4034 return ((struct type_pair *) *slot)->new;
4036 new_type = alloc_type_arch (get_type_arch (type));
4038 /* We must add the new type to the hash table immediately, in case
4039 we encounter this type again during a recursive call below. */
4041 = obstack_alloc (&objfile->objfile_obstack, sizeof (struct type_pair));
4043 stored->new = new_type;
4046 /* Copy the common fields of types. For the main type, we simply
4047 copy the entire thing and then update specific fields as needed. */
4048 *TYPE_MAIN_TYPE (new_type) = *TYPE_MAIN_TYPE (type);
4049 TYPE_OBJFILE_OWNED (new_type) = 0;
4050 TYPE_OWNER (new_type).gdbarch = get_type_arch (type);
4052 if (TYPE_NAME (type))
4053 TYPE_NAME (new_type) = xstrdup (TYPE_NAME (type));
4054 if (TYPE_TAG_NAME (type))
4055 TYPE_TAG_NAME (new_type) = xstrdup (TYPE_TAG_NAME (type));
4057 TYPE_INSTANCE_FLAGS (new_type) = TYPE_INSTANCE_FLAGS (type);
4058 TYPE_LENGTH (new_type) = TYPE_LENGTH (type);
4060 /* Copy the fields. */
4061 if (TYPE_NFIELDS (type))
4065 nfields = TYPE_NFIELDS (type);
4066 TYPE_FIELDS (new_type) = XCNEWVEC (struct field, nfields);
4067 for (i = 0; i < nfields; i++)
4069 TYPE_FIELD_ARTIFICIAL (new_type, i) =
4070 TYPE_FIELD_ARTIFICIAL (type, i);
4071 TYPE_FIELD_BITSIZE (new_type, i) = TYPE_FIELD_BITSIZE (type, i);
4072 if (TYPE_FIELD_TYPE (type, i))
4073 TYPE_FIELD_TYPE (new_type, i)
4074 = copy_type_recursive (objfile, TYPE_FIELD_TYPE (type, i),
4076 if (TYPE_FIELD_NAME (type, i))
4077 TYPE_FIELD_NAME (new_type, i) =
4078 xstrdup (TYPE_FIELD_NAME (type, i));
4079 switch (TYPE_FIELD_LOC_KIND (type, i))
4081 case FIELD_LOC_KIND_BITPOS:
4082 SET_FIELD_BITPOS (TYPE_FIELD (new_type, i),
4083 TYPE_FIELD_BITPOS (type, i));
4085 case FIELD_LOC_KIND_ENUMVAL:
4086 SET_FIELD_ENUMVAL (TYPE_FIELD (new_type, i),
4087 TYPE_FIELD_ENUMVAL (type, i));
4089 case FIELD_LOC_KIND_PHYSADDR:
4090 SET_FIELD_PHYSADDR (TYPE_FIELD (new_type, i),
4091 TYPE_FIELD_STATIC_PHYSADDR (type, i));
4093 case FIELD_LOC_KIND_PHYSNAME:
4094 SET_FIELD_PHYSNAME (TYPE_FIELD (new_type, i),
4095 xstrdup (TYPE_FIELD_STATIC_PHYSNAME (type,
4099 internal_error (__FILE__, __LINE__,
4100 _("Unexpected type field location kind: %d"),
4101 TYPE_FIELD_LOC_KIND (type, i));
4106 /* For range types, copy the bounds information. */
4107 if (TYPE_CODE (type) == TYPE_CODE_RANGE)
4109 TYPE_RANGE_DATA (new_type) = xmalloc (sizeof (struct range_bounds));
4110 *TYPE_RANGE_DATA (new_type) = *TYPE_RANGE_DATA (type);
4113 /* Copy pointers to other types. */
4114 if (TYPE_TARGET_TYPE (type))
4115 TYPE_TARGET_TYPE (new_type) =
4116 copy_type_recursive (objfile,
4117 TYPE_TARGET_TYPE (type),
4119 if (TYPE_VPTR_BASETYPE (type))
4120 TYPE_VPTR_BASETYPE (new_type) =
4121 copy_type_recursive (objfile,
4122 TYPE_VPTR_BASETYPE (type),
4124 /* Maybe copy the type_specific bits.
4126 NOTE drow/2005-12-09: We do not copy the C++-specific bits like
4127 base classes and methods. There's no fundamental reason why we
4128 can't, but at the moment it is not needed. */
4130 if (TYPE_CODE (type) == TYPE_CODE_FLT)
4131 TYPE_FLOATFORMAT (new_type) = TYPE_FLOATFORMAT (type);
4132 else if (TYPE_CODE (type) == TYPE_CODE_STRUCT
4133 || TYPE_CODE (type) == TYPE_CODE_UNION
4134 || TYPE_CODE (type) == TYPE_CODE_NAMESPACE)
4135 INIT_CPLUS_SPECIFIC (new_type);
4140 /* Make a copy of the given TYPE, except that the pointer & reference
4141 types are not preserved.
4143 This function assumes that the given type has an associated objfile.
4144 This objfile is used to allocate the new type. */
4147 copy_type (const struct type *type)
4149 struct type *new_type;
4151 gdb_assert (TYPE_OBJFILE_OWNED (type));
4153 new_type = alloc_type_copy (type);
4154 TYPE_INSTANCE_FLAGS (new_type) = TYPE_INSTANCE_FLAGS (type);
4155 TYPE_LENGTH (new_type) = TYPE_LENGTH (type);
4156 memcpy (TYPE_MAIN_TYPE (new_type), TYPE_MAIN_TYPE (type),
4157 sizeof (struct main_type));
4162 /* Helper functions to initialize architecture-specific types. */
4164 /* Allocate a type structure associated with GDBARCH and set its
4165 CODE, LENGTH, and NAME fields. */
4168 arch_type (struct gdbarch *gdbarch,
4169 enum type_code code, int length, char *name)
4173 type = alloc_type_arch (gdbarch);
4174 TYPE_CODE (type) = code;
4175 TYPE_LENGTH (type) = length;
4178 TYPE_NAME (type) = xstrdup (name);
4183 /* Allocate a TYPE_CODE_INT type structure associated with GDBARCH.
4184 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
4185 the type's TYPE_UNSIGNED flag. NAME is the type name. */
4188 arch_integer_type (struct gdbarch *gdbarch,
4189 int bit, int unsigned_p, char *name)
4193 t = arch_type (gdbarch, TYPE_CODE_INT, bit / TARGET_CHAR_BIT, name);
4195 TYPE_UNSIGNED (t) = 1;
4196 if (name && strcmp (name, "char") == 0)
4197 TYPE_NOSIGN (t) = 1;
4202 /* Allocate a TYPE_CODE_CHAR type structure associated with GDBARCH.
4203 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
4204 the type's TYPE_UNSIGNED flag. NAME is the type name. */
4207 arch_character_type (struct gdbarch *gdbarch,
4208 int bit, int unsigned_p, char *name)
4212 t = arch_type (gdbarch, TYPE_CODE_CHAR, bit / TARGET_CHAR_BIT, name);
4214 TYPE_UNSIGNED (t) = 1;
4219 /* Allocate a TYPE_CODE_BOOL type structure associated with GDBARCH.
4220 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
4221 the type's TYPE_UNSIGNED flag. NAME is the type name. */
4224 arch_boolean_type (struct gdbarch *gdbarch,
4225 int bit, int unsigned_p, char *name)
4229 t = arch_type (gdbarch, TYPE_CODE_BOOL, bit / TARGET_CHAR_BIT, name);
4231 TYPE_UNSIGNED (t) = 1;
4236 /* Allocate a TYPE_CODE_FLT type structure associated with GDBARCH.
4237 BIT is the type size in bits; if BIT equals -1, the size is
4238 determined by the floatformat. NAME is the type name. Set the
4239 TYPE_FLOATFORMAT from FLOATFORMATS. */
4242 arch_float_type (struct gdbarch *gdbarch,
4243 int bit, char *name, const struct floatformat **floatformats)
4249 gdb_assert (floatformats != NULL);
4250 gdb_assert (floatformats[0] != NULL && floatformats[1] != NULL);
4251 bit = floatformats[0]->totalsize;
4253 gdb_assert (bit >= 0);
4255 t = arch_type (gdbarch, TYPE_CODE_FLT, bit / TARGET_CHAR_BIT, name);
4256 TYPE_FLOATFORMAT (t) = floatformats;
4260 /* Allocate a TYPE_CODE_COMPLEX type structure associated with GDBARCH.
4261 NAME is the type name. TARGET_TYPE is the component float type. */
4264 arch_complex_type (struct gdbarch *gdbarch,
4265 char *name, struct type *target_type)
4269 t = arch_type (gdbarch, TYPE_CODE_COMPLEX,
4270 2 * TYPE_LENGTH (target_type), name);
4271 TYPE_TARGET_TYPE (t) = target_type;
4275 /* Allocate a TYPE_CODE_FLAGS type structure associated with GDBARCH.
4276 NAME is the type name. LENGTH is the size of the flag word in bytes. */
4279 arch_flags_type (struct gdbarch *gdbarch, char *name, int length)
4281 int nfields = length * TARGET_CHAR_BIT;
4284 type = arch_type (gdbarch, TYPE_CODE_FLAGS, length, name);
4285 TYPE_UNSIGNED (type) = 1;
4286 TYPE_NFIELDS (type) = nfields;
4287 TYPE_FIELDS (type) = TYPE_ZALLOC (type, nfields * sizeof (struct field));
4292 /* Add field to TYPE_CODE_FLAGS type TYPE to indicate the bit at
4293 position BITPOS is called NAME. */
4296 append_flags_type_flag (struct type *type, int bitpos, char *name)
4298 gdb_assert (TYPE_CODE (type) == TYPE_CODE_FLAGS);
4299 gdb_assert (bitpos < TYPE_NFIELDS (type));
4300 gdb_assert (bitpos >= 0);
4304 TYPE_FIELD_NAME (type, bitpos) = xstrdup (name);
4305 SET_FIELD_BITPOS (TYPE_FIELD (type, bitpos), bitpos);
4309 /* Don't show this field to the user. */
4310 SET_FIELD_BITPOS (TYPE_FIELD (type, bitpos), -1);
4314 /* Allocate a TYPE_CODE_STRUCT or TYPE_CODE_UNION type structure (as
4315 specified by CODE) associated with GDBARCH. NAME is the type name. */
4318 arch_composite_type (struct gdbarch *gdbarch, char *name, enum type_code code)
4322 gdb_assert (code == TYPE_CODE_STRUCT || code == TYPE_CODE_UNION);
4323 t = arch_type (gdbarch, code, 0, NULL);
4324 TYPE_TAG_NAME (t) = name;
4325 INIT_CPLUS_SPECIFIC (t);
4329 /* Add new field with name NAME and type FIELD to composite type T.
4330 Do not set the field's position or adjust the type's length;
4331 the caller should do so. Return the new field. */
4334 append_composite_type_field_raw (struct type *t, char *name,
4339 TYPE_NFIELDS (t) = TYPE_NFIELDS (t) + 1;
4340 TYPE_FIELDS (t) = xrealloc (TYPE_FIELDS (t),
4341 sizeof (struct field) * TYPE_NFIELDS (t));
4342 f = &(TYPE_FIELDS (t)[TYPE_NFIELDS (t) - 1]);
4343 memset (f, 0, sizeof f[0]);
4344 FIELD_TYPE (f[0]) = field;
4345 FIELD_NAME (f[0]) = name;
4349 /* Add new field with name NAME and type FIELD to composite type T.
4350 ALIGNMENT (if non-zero) specifies the minimum field alignment. */
4353 append_composite_type_field_aligned (struct type *t, char *name,
4354 struct type *field, int alignment)
4356 struct field *f = append_composite_type_field_raw (t, name, field);
4358 if (TYPE_CODE (t) == TYPE_CODE_UNION)
4360 if (TYPE_LENGTH (t) < TYPE_LENGTH (field))
4361 TYPE_LENGTH (t) = TYPE_LENGTH (field);
4363 else if (TYPE_CODE (t) == TYPE_CODE_STRUCT)
4365 TYPE_LENGTH (t) = TYPE_LENGTH (t) + TYPE_LENGTH (field);
4366 if (TYPE_NFIELDS (t) > 1)
4368 SET_FIELD_BITPOS (f[0],
4369 (FIELD_BITPOS (f[-1])
4370 + (TYPE_LENGTH (FIELD_TYPE (f[-1]))
4371 * TARGET_CHAR_BIT)));
4377 alignment *= TARGET_CHAR_BIT;
4378 left = FIELD_BITPOS (f[0]) % alignment;
4382 SET_FIELD_BITPOS (f[0], FIELD_BITPOS (f[0]) + (alignment - left));
4383 TYPE_LENGTH (t) += (alignment - left) / TARGET_CHAR_BIT;
4390 /* Add new field with name NAME and type FIELD to composite type T. */
4393 append_composite_type_field (struct type *t, char *name,
4396 append_composite_type_field_aligned (t, name, field, 0);
4399 static struct gdbarch_data *gdbtypes_data;
4401 const struct builtin_type *
4402 builtin_type (struct gdbarch *gdbarch)
4404 return gdbarch_data (gdbarch, gdbtypes_data);
4408 gdbtypes_post_init (struct gdbarch *gdbarch)
4410 struct builtin_type *builtin_type
4411 = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct builtin_type);
4414 builtin_type->builtin_void
4415 = arch_type (gdbarch, TYPE_CODE_VOID, 1, "void");
4416 builtin_type->builtin_char
4417 = arch_integer_type (gdbarch, TARGET_CHAR_BIT,
4418 !gdbarch_char_signed (gdbarch), "char");
4419 builtin_type->builtin_signed_char
4420 = arch_integer_type (gdbarch, TARGET_CHAR_BIT,
4422 builtin_type->builtin_unsigned_char
4423 = arch_integer_type (gdbarch, TARGET_CHAR_BIT,
4424 1, "unsigned char");
4425 builtin_type->builtin_short
4426 = arch_integer_type (gdbarch, gdbarch_short_bit (gdbarch),
4428 builtin_type->builtin_unsigned_short
4429 = arch_integer_type (gdbarch, gdbarch_short_bit (gdbarch),
4430 1, "unsigned short");
4431 builtin_type->builtin_int
4432 = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch),
4434 builtin_type->builtin_unsigned_int
4435 = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch),
4437 builtin_type->builtin_long
4438 = arch_integer_type (gdbarch, gdbarch_long_bit (gdbarch),
4440 builtin_type->builtin_unsigned_long
4441 = arch_integer_type (gdbarch, gdbarch_long_bit (gdbarch),
4442 1, "unsigned long");
4443 builtin_type->builtin_long_long
4444 = arch_integer_type (gdbarch, gdbarch_long_long_bit (gdbarch),
4446 builtin_type->builtin_unsigned_long_long
4447 = arch_integer_type (gdbarch, gdbarch_long_long_bit (gdbarch),
4448 1, "unsigned long long");
4449 builtin_type->builtin_float
4450 = arch_float_type (gdbarch, gdbarch_float_bit (gdbarch),
4451 "float", gdbarch_float_format (gdbarch));
4452 builtin_type->builtin_double
4453 = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch),
4454 "double", gdbarch_double_format (gdbarch));
4455 builtin_type->builtin_long_double
4456 = arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch),
4457 "long double", gdbarch_long_double_format (gdbarch));
4458 builtin_type->builtin_complex
4459 = arch_complex_type (gdbarch, "complex",
4460 builtin_type->builtin_float);
4461 builtin_type->builtin_double_complex
4462 = arch_complex_type (gdbarch, "double complex",
4463 builtin_type->builtin_double);
4464 builtin_type->builtin_string
4465 = arch_type (gdbarch, TYPE_CODE_STRING, 1, "string");
4466 builtin_type->builtin_bool
4467 = arch_type (gdbarch, TYPE_CODE_BOOL, 1, "bool");
4469 /* The following three are about decimal floating point types, which
4470 are 32-bits, 64-bits and 128-bits respectively. */
4471 builtin_type->builtin_decfloat
4472 = arch_type (gdbarch, TYPE_CODE_DECFLOAT, 32 / 8, "_Decimal32");
4473 builtin_type->builtin_decdouble
4474 = arch_type (gdbarch, TYPE_CODE_DECFLOAT, 64 / 8, "_Decimal64");
4475 builtin_type->builtin_declong
4476 = arch_type (gdbarch, TYPE_CODE_DECFLOAT, 128 / 8, "_Decimal128");
4478 /* "True" character types. */
4479 builtin_type->builtin_true_char
4480 = arch_character_type (gdbarch, TARGET_CHAR_BIT, 0, "true character");
4481 builtin_type->builtin_true_unsigned_char
4482 = arch_character_type (gdbarch, TARGET_CHAR_BIT, 1, "true character");
4484 /* Fixed-size integer types. */
4485 builtin_type->builtin_int0
4486 = arch_integer_type (gdbarch, 0, 0, "int0_t");
4487 builtin_type->builtin_int8
4488 = arch_integer_type (gdbarch, 8, 0, "int8_t");
4489 builtin_type->builtin_uint8
4490 = arch_integer_type (gdbarch, 8, 1, "uint8_t");
4491 builtin_type->builtin_int16
4492 = arch_integer_type (gdbarch, 16, 0, "int16_t");
4493 builtin_type->builtin_uint16
4494 = arch_integer_type (gdbarch, 16, 1, "uint16_t");
4495 builtin_type->builtin_int32
4496 = arch_integer_type (gdbarch, 32, 0, "int32_t");
4497 builtin_type->builtin_uint32
4498 = arch_integer_type (gdbarch, 32, 1, "uint32_t");
4499 builtin_type->builtin_int64
4500 = arch_integer_type (gdbarch, 64, 0, "int64_t");
4501 builtin_type->builtin_uint64
4502 = arch_integer_type (gdbarch, 64, 1, "uint64_t");
4503 builtin_type->builtin_int128
4504 = arch_integer_type (gdbarch, 128, 0, "int128_t");
4505 builtin_type->builtin_uint128
4506 = arch_integer_type (gdbarch, 128, 1, "uint128_t");
4507 TYPE_INSTANCE_FLAGS (builtin_type->builtin_int8) |=
4508 TYPE_INSTANCE_FLAG_NOTTEXT;
4509 TYPE_INSTANCE_FLAGS (builtin_type->builtin_uint8) |=
4510 TYPE_INSTANCE_FLAG_NOTTEXT;
4512 /* Wide character types. */
4513 builtin_type->builtin_char16
4514 = arch_integer_type (gdbarch, 16, 0, "char16_t");
4515 builtin_type->builtin_char32
4516 = arch_integer_type (gdbarch, 32, 0, "char32_t");
4519 /* Default data/code pointer types. */
4520 builtin_type->builtin_data_ptr
4521 = lookup_pointer_type (builtin_type->builtin_void);
4522 builtin_type->builtin_func_ptr
4523 = lookup_pointer_type (lookup_function_type (builtin_type->builtin_void));
4524 builtin_type->builtin_func_func
4525 = lookup_function_type (builtin_type->builtin_func_ptr);
4527 /* This type represents a GDB internal function. */
4528 builtin_type->internal_fn
4529 = arch_type (gdbarch, TYPE_CODE_INTERNAL_FUNCTION, 0,
4530 "<internal function>");
4532 /* This type represents an xmethod. */
4533 builtin_type->xmethod
4534 = arch_type (gdbarch, TYPE_CODE_XMETHOD, 0, "<xmethod>");
4536 return builtin_type;
4539 /* This set of objfile-based types is intended to be used by symbol
4540 readers as basic types. */
4542 static const struct objfile_data *objfile_type_data;
4544 const struct objfile_type *
4545 objfile_type (struct objfile *objfile)
4547 struct gdbarch *gdbarch;
4548 struct objfile_type *objfile_type
4549 = objfile_data (objfile, objfile_type_data);
4552 return objfile_type;
4554 objfile_type = OBSTACK_CALLOC (&objfile->objfile_obstack,
4555 1, struct objfile_type);
4557 /* Use the objfile architecture to determine basic type properties. */
4558 gdbarch = get_objfile_arch (objfile);
4561 objfile_type->builtin_void
4562 = init_type (TYPE_CODE_VOID, 1,
4566 objfile_type->builtin_char
4567 = init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
4569 | (gdbarch_char_signed (gdbarch) ? 0 : TYPE_FLAG_UNSIGNED)),
4571 objfile_type->builtin_signed_char
4572 = init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
4574 "signed char", objfile);
4575 objfile_type->builtin_unsigned_char
4576 = init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
4578 "unsigned char", objfile);
4579 objfile_type->builtin_short
4580 = init_type (TYPE_CODE_INT,
4581 gdbarch_short_bit (gdbarch) / TARGET_CHAR_BIT,
4582 0, "short", objfile);
4583 objfile_type->builtin_unsigned_short
4584 = init_type (TYPE_CODE_INT,
4585 gdbarch_short_bit (gdbarch) / TARGET_CHAR_BIT,
4586 TYPE_FLAG_UNSIGNED, "unsigned short", objfile);
4587 objfile_type->builtin_int
4588 = init_type (TYPE_CODE_INT,
4589 gdbarch_int_bit (gdbarch) / TARGET_CHAR_BIT,
4591 objfile_type->builtin_unsigned_int
4592 = init_type (TYPE_CODE_INT,
4593 gdbarch_int_bit (gdbarch) / TARGET_CHAR_BIT,
4594 TYPE_FLAG_UNSIGNED, "unsigned int", objfile);
4595 objfile_type->builtin_long
4596 = init_type (TYPE_CODE_INT,
4597 gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT,
4598 0, "long", objfile);
4599 objfile_type->builtin_unsigned_long
4600 = init_type (TYPE_CODE_INT,
4601 gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT,
4602 TYPE_FLAG_UNSIGNED, "unsigned long", objfile);
4603 objfile_type->builtin_long_long
4604 = init_type (TYPE_CODE_INT,
4605 gdbarch_long_long_bit (gdbarch) / TARGET_CHAR_BIT,
4606 0, "long long", objfile);
4607 objfile_type->builtin_unsigned_long_long
4608 = init_type (TYPE_CODE_INT,
4609 gdbarch_long_long_bit (gdbarch) / TARGET_CHAR_BIT,
4610 TYPE_FLAG_UNSIGNED, "unsigned long long", objfile);
4612 objfile_type->builtin_float
4613 = init_type (TYPE_CODE_FLT,
4614 gdbarch_float_bit (gdbarch) / TARGET_CHAR_BIT,
4615 0, "float", objfile);
4616 TYPE_FLOATFORMAT (objfile_type->builtin_float)
4617 = gdbarch_float_format (gdbarch);
4618 objfile_type->builtin_double
4619 = init_type (TYPE_CODE_FLT,
4620 gdbarch_double_bit (gdbarch) / TARGET_CHAR_BIT,
4621 0, "double", objfile);
4622 TYPE_FLOATFORMAT (objfile_type->builtin_double)
4623 = gdbarch_double_format (gdbarch);
4624 objfile_type->builtin_long_double
4625 = init_type (TYPE_CODE_FLT,
4626 gdbarch_long_double_bit (gdbarch) / TARGET_CHAR_BIT,
4627 0, "long double", objfile);
4628 TYPE_FLOATFORMAT (objfile_type->builtin_long_double)
4629 = gdbarch_long_double_format (gdbarch);
4631 /* This type represents a type that was unrecognized in symbol read-in. */
4632 objfile_type->builtin_error
4633 = init_type (TYPE_CODE_ERROR, 0, 0, "<unknown type>", objfile);
4635 /* The following set of types is used for symbols with no
4636 debug information. */
4637 objfile_type->nodebug_text_symbol
4638 = init_type (TYPE_CODE_FUNC, 1, 0,
4639 "<text variable, no debug info>", objfile);
4640 TYPE_TARGET_TYPE (objfile_type->nodebug_text_symbol)
4641 = objfile_type->builtin_int;
4642 objfile_type->nodebug_text_gnu_ifunc_symbol
4643 = init_type (TYPE_CODE_FUNC, 1, TYPE_FLAG_GNU_IFUNC,
4644 "<text gnu-indirect-function variable, no debug info>",
4646 TYPE_TARGET_TYPE (objfile_type->nodebug_text_gnu_ifunc_symbol)
4647 = objfile_type->nodebug_text_symbol;
4648 objfile_type->nodebug_got_plt_symbol
4649 = init_type (TYPE_CODE_PTR, gdbarch_addr_bit (gdbarch) / 8, 0,
4650 "<text from jump slot in .got.plt, no debug info>",
4652 TYPE_TARGET_TYPE (objfile_type->nodebug_got_plt_symbol)
4653 = objfile_type->nodebug_text_symbol;
4654 objfile_type->nodebug_data_symbol
4655 = init_type (TYPE_CODE_INT,
4656 gdbarch_int_bit (gdbarch) / HOST_CHAR_BIT, 0,
4657 "<data variable, no debug info>", objfile);
4658 objfile_type->nodebug_unknown_symbol
4659 = init_type (TYPE_CODE_INT, 1, 0,
4660 "<variable (not text or data), no debug info>", objfile);
4661 objfile_type->nodebug_tls_symbol
4662 = init_type (TYPE_CODE_INT,
4663 gdbarch_int_bit (gdbarch) / HOST_CHAR_BIT, 0,
4664 "<thread local variable, no debug info>", objfile);
4666 /* NOTE: on some targets, addresses and pointers are not necessarily
4670 - gdb's `struct type' always describes the target's
4672 - gdb's `struct value' objects should always hold values in
4674 - gdb's CORE_ADDR values are addresses in the unified virtual
4675 address space that the assembler and linker work with. Thus,
4676 since target_read_memory takes a CORE_ADDR as an argument, it
4677 can access any memory on the target, even if the processor has
4678 separate code and data address spaces.
4680 In this context, objfile_type->builtin_core_addr is a bit odd:
4681 it's a target type for a value the target will never see. It's
4682 only used to hold the values of (typeless) linker symbols, which
4683 are indeed in the unified virtual address space. */
4685 objfile_type->builtin_core_addr
4686 = init_type (TYPE_CODE_INT,
4687 gdbarch_addr_bit (gdbarch) / 8,
4688 TYPE_FLAG_UNSIGNED, "__CORE_ADDR", objfile);
4690 set_objfile_data (objfile, objfile_type_data, objfile_type);
4691 return objfile_type;
4694 extern initialize_file_ftype _initialize_gdbtypes;
4697 _initialize_gdbtypes (void)
4699 gdbtypes_data = gdbarch_data_register_post_init (gdbtypes_post_init);
4700 objfile_type_data = register_objfile_data ();
4702 add_setshow_zuinteger_cmd ("overload", no_class, &overload_debug,
4703 _("Set debugging of C++ overloading."),
4704 _("Show debugging of C++ overloading."),
4705 _("When enabled, ranking of the "
4706 "functions is displayed."),
4708 show_overload_debug,
4709 &setdebuglist, &showdebuglist);
4711 /* Add user knob for controlling resolution of opaque types. */
4712 add_setshow_boolean_cmd ("opaque-type-resolution", class_support,
4713 &opaque_type_resolution,
4714 _("Set resolution of opaque struct/class/union"
4715 " types (if set before loading symbols)."),
4716 _("Show resolution of opaque struct/class/union"
4717 " types (if set before loading symbols)."),
4719 show_opaque_type_resolution,
4720 &setlist, &showlist);
4722 /* Add an option to permit non-strict type checking. */
4723 add_setshow_boolean_cmd ("type", class_support,
4724 &strict_type_checking,
4725 _("Set strict type checking."),
4726 _("Show strict type checking."),
4728 show_strict_type_checking,
4729 &setchecklist, &showchecklist);