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 "cp-support.h"
39 #include "dwarf2loc.h"
42 /* Initialize BADNESS constants. */
44 const struct rank LENGTH_MISMATCH_BADNESS = {100,0};
46 const struct rank TOO_FEW_PARAMS_BADNESS = {100,0};
47 const struct rank INCOMPATIBLE_TYPE_BADNESS = {100,0};
49 const struct rank EXACT_MATCH_BADNESS = {0,0};
51 const struct rank INTEGER_PROMOTION_BADNESS = {1,0};
52 const struct rank FLOAT_PROMOTION_BADNESS = {1,0};
53 const struct rank BASE_PTR_CONVERSION_BADNESS = {1,0};
54 const struct rank INTEGER_CONVERSION_BADNESS = {2,0};
55 const struct rank FLOAT_CONVERSION_BADNESS = {2,0};
56 const struct rank INT_FLOAT_CONVERSION_BADNESS = {2,0};
57 const struct rank VOID_PTR_CONVERSION_BADNESS = {2,0};
58 const struct rank BOOL_CONVERSION_BADNESS = {3,0};
59 const struct rank BASE_CONVERSION_BADNESS = {2,0};
60 const struct rank REFERENCE_CONVERSION_BADNESS = {2,0};
61 const struct rank NULL_POINTER_CONVERSION_BADNESS = {2,0};
62 const struct rank NS_POINTER_CONVERSION_BADNESS = {10,0};
63 const struct rank NS_INTEGER_POINTER_CONVERSION_BADNESS = {3,0};
65 /* Floatformat pairs. */
66 const struct floatformat *floatformats_ieee_half[BFD_ENDIAN_UNKNOWN] = {
67 &floatformat_ieee_half_big,
68 &floatformat_ieee_half_little
70 const struct floatformat *floatformats_ieee_single[BFD_ENDIAN_UNKNOWN] = {
71 &floatformat_ieee_single_big,
72 &floatformat_ieee_single_little
74 const struct floatformat *floatformats_ieee_double[BFD_ENDIAN_UNKNOWN] = {
75 &floatformat_ieee_double_big,
76 &floatformat_ieee_double_little
78 const struct floatformat *floatformats_ieee_double_littlebyte_bigword[BFD_ENDIAN_UNKNOWN] = {
79 &floatformat_ieee_double_big,
80 &floatformat_ieee_double_littlebyte_bigword
82 const struct floatformat *floatformats_i387_ext[BFD_ENDIAN_UNKNOWN] = {
83 &floatformat_i387_ext,
86 const struct floatformat *floatformats_m68881_ext[BFD_ENDIAN_UNKNOWN] = {
87 &floatformat_m68881_ext,
88 &floatformat_m68881_ext
90 const struct floatformat *floatformats_arm_ext[BFD_ENDIAN_UNKNOWN] = {
91 &floatformat_arm_ext_big,
92 &floatformat_arm_ext_littlebyte_bigword
94 const struct floatformat *floatformats_ia64_spill[BFD_ENDIAN_UNKNOWN] = {
95 &floatformat_ia64_spill_big,
96 &floatformat_ia64_spill_little
98 const struct floatformat *floatformats_ia64_quad[BFD_ENDIAN_UNKNOWN] = {
99 &floatformat_ia64_quad_big,
100 &floatformat_ia64_quad_little
102 const struct floatformat *floatformats_vax_f[BFD_ENDIAN_UNKNOWN] = {
106 const struct floatformat *floatformats_vax_d[BFD_ENDIAN_UNKNOWN] = {
110 const struct floatformat *floatformats_ibm_long_double[BFD_ENDIAN_UNKNOWN] = {
111 &floatformat_ibm_long_double_big,
112 &floatformat_ibm_long_double_little
115 /* Should opaque types be resolved? */
117 static int opaque_type_resolution = 1;
119 /* A flag to enable printing of debugging information of C++
122 unsigned int overload_debug = 0;
124 /* A flag to enable strict type checking. */
126 static int strict_type_checking = 1;
128 /* A function to show whether opaque types are resolved. */
131 show_opaque_type_resolution (struct ui_file *file, int from_tty,
132 struct cmd_list_element *c,
135 fprintf_filtered (file, _("Resolution of opaque struct/class/union types "
136 "(if set before loading symbols) is %s.\n"),
140 /* A function to show whether C++ overload debugging is enabled. */
143 show_overload_debug (struct ui_file *file, int from_tty,
144 struct cmd_list_element *c, const char *value)
146 fprintf_filtered (file, _("Debugging of C++ overloading is %s.\n"),
150 /* A function to show the status of strict type checking. */
153 show_strict_type_checking (struct ui_file *file, int from_tty,
154 struct cmd_list_element *c, const char *value)
156 fprintf_filtered (file, _("Strict type checking is %s.\n"), value);
160 /* Allocate a new OBJFILE-associated type structure and fill it
161 with some defaults. Space for the type structure is allocated
162 on the objfile's objfile_obstack. */
165 alloc_type (struct objfile *objfile)
169 gdb_assert (objfile != NULL);
171 /* Alloc the structure and start off with all fields zeroed. */
172 type = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct type);
173 TYPE_MAIN_TYPE (type) = OBSTACK_ZALLOC (&objfile->objfile_obstack,
175 OBJSTAT (objfile, n_types++);
177 TYPE_OBJFILE_OWNED (type) = 1;
178 TYPE_OWNER (type).objfile = objfile;
180 /* Initialize the fields that might not be zero. */
182 TYPE_CODE (type) = TYPE_CODE_UNDEF;
183 TYPE_VPTR_FIELDNO (type) = -1;
184 TYPE_CHAIN (type) = type; /* Chain back to itself. */
189 /* Allocate a new GDBARCH-associated type structure and fill it
190 with some defaults. Space for the type structure is allocated
194 alloc_type_arch (struct gdbarch *gdbarch)
198 gdb_assert (gdbarch != NULL);
200 /* Alloc the structure and start off with all fields zeroed. */
202 type = XCNEW (struct type);
203 TYPE_MAIN_TYPE (type) = XCNEW (struct main_type);
205 TYPE_OBJFILE_OWNED (type) = 0;
206 TYPE_OWNER (type).gdbarch = gdbarch;
208 /* Initialize the fields that might not be zero. */
210 TYPE_CODE (type) = TYPE_CODE_UNDEF;
211 TYPE_VPTR_FIELDNO (type) = -1;
212 TYPE_CHAIN (type) = type; /* Chain back to itself. */
217 /* If TYPE is objfile-associated, allocate a new type structure
218 associated with the same objfile. If TYPE is gdbarch-associated,
219 allocate a new type structure associated with the same gdbarch. */
222 alloc_type_copy (const struct type *type)
224 if (TYPE_OBJFILE_OWNED (type))
225 return alloc_type (TYPE_OWNER (type).objfile);
227 return alloc_type_arch (TYPE_OWNER (type).gdbarch);
230 /* If TYPE is gdbarch-associated, return that architecture.
231 If TYPE is objfile-associated, return that objfile's architecture. */
234 get_type_arch (const struct type *type)
236 if (TYPE_OBJFILE_OWNED (type))
237 return get_objfile_arch (TYPE_OWNER (type).objfile);
239 return TYPE_OWNER (type).gdbarch;
242 /* See gdbtypes.h. */
245 get_target_type (struct type *type)
249 type = TYPE_TARGET_TYPE (type);
251 type = check_typedef (type);
257 /* Alloc a new type instance structure, fill it with some defaults,
258 and point it at OLDTYPE. Allocate the new type instance from the
259 same place as OLDTYPE. */
262 alloc_type_instance (struct type *oldtype)
266 /* Allocate the structure. */
268 if (! TYPE_OBJFILE_OWNED (oldtype))
269 type = XCNEW (struct type);
271 type = OBSTACK_ZALLOC (&TYPE_OBJFILE (oldtype)->objfile_obstack,
274 TYPE_MAIN_TYPE (type) = TYPE_MAIN_TYPE (oldtype);
276 TYPE_CHAIN (type) = type; /* Chain back to itself for now. */
281 /* Clear all remnants of the previous type at TYPE, in preparation for
282 replacing it with something else. Preserve owner information. */
285 smash_type (struct type *type)
287 int objfile_owned = TYPE_OBJFILE_OWNED (type);
288 union type_owner owner = TYPE_OWNER (type);
290 memset (TYPE_MAIN_TYPE (type), 0, sizeof (struct main_type));
292 /* Restore owner information. */
293 TYPE_OBJFILE_OWNED (type) = objfile_owned;
294 TYPE_OWNER (type) = owner;
296 /* For now, delete the rings. */
297 TYPE_CHAIN (type) = type;
299 /* For now, leave the pointer/reference types alone. */
302 /* Lookup a pointer to a type TYPE. TYPEPTR, if nonzero, points
303 to a pointer to memory where the pointer type should be stored.
304 If *TYPEPTR is zero, update it to point to the pointer type we return.
305 We allocate new memory if needed. */
308 make_pointer_type (struct type *type, struct type **typeptr)
310 struct type *ntype; /* New type */
313 ntype = TYPE_POINTER_TYPE (type);
318 return ntype; /* Don't care about alloc,
319 and have new type. */
320 else if (*typeptr == 0)
322 *typeptr = ntype; /* Tracking alloc, and have new type. */
327 if (typeptr == 0 || *typeptr == 0) /* We'll need to allocate one. */
329 ntype = alloc_type_copy (type);
333 else /* We have storage, but need to reset it. */
336 chain = TYPE_CHAIN (ntype);
338 TYPE_CHAIN (ntype) = chain;
341 TYPE_TARGET_TYPE (ntype) = type;
342 TYPE_POINTER_TYPE (type) = ntype;
344 /* FIXME! Assumes the machine has only one representation for pointers! */
347 = gdbarch_ptr_bit (get_type_arch (type)) / TARGET_CHAR_BIT;
348 TYPE_CODE (ntype) = TYPE_CODE_PTR;
350 /* Mark pointers as unsigned. The target converts between pointers
351 and addresses (CORE_ADDRs) using gdbarch_pointer_to_address and
352 gdbarch_address_to_pointer. */
353 TYPE_UNSIGNED (ntype) = 1;
355 /* Update the length of all the other variants of this type. */
356 chain = TYPE_CHAIN (ntype);
357 while (chain != ntype)
359 TYPE_LENGTH (chain) = TYPE_LENGTH (ntype);
360 chain = TYPE_CHAIN (chain);
366 /* Given a type TYPE, return a type of pointers to that type.
367 May need to construct such a type if this is the first use. */
370 lookup_pointer_type (struct type *type)
372 return make_pointer_type (type, (struct type **) 0);
375 /* Lookup a C++ `reference' to a type TYPE. TYPEPTR, if nonzero,
376 points to a pointer to memory where the reference type should be
377 stored. If *TYPEPTR is zero, update it to point to the reference
378 type we return. We allocate new memory if needed. */
381 make_reference_type (struct type *type, struct type **typeptr)
383 struct type *ntype; /* New type */
386 ntype = TYPE_REFERENCE_TYPE (type);
391 return ntype; /* Don't care about alloc,
392 and have new type. */
393 else if (*typeptr == 0)
395 *typeptr = ntype; /* Tracking alloc, and have new type. */
400 if (typeptr == 0 || *typeptr == 0) /* We'll need to allocate one. */
402 ntype = alloc_type_copy (type);
406 else /* We have storage, but need to reset it. */
409 chain = TYPE_CHAIN (ntype);
411 TYPE_CHAIN (ntype) = chain;
414 TYPE_TARGET_TYPE (ntype) = type;
415 TYPE_REFERENCE_TYPE (type) = ntype;
417 /* FIXME! Assume the machine has only one representation for
418 references, and that it matches the (only) representation for
421 TYPE_LENGTH (ntype) =
422 gdbarch_ptr_bit (get_type_arch (type)) / TARGET_CHAR_BIT;
423 TYPE_CODE (ntype) = TYPE_CODE_REF;
425 if (!TYPE_REFERENCE_TYPE (type)) /* Remember it, if don't have one. */
426 TYPE_REFERENCE_TYPE (type) = ntype;
428 /* Update the length of all the other variants of this type. */
429 chain = TYPE_CHAIN (ntype);
430 while (chain != ntype)
432 TYPE_LENGTH (chain) = TYPE_LENGTH (ntype);
433 chain = TYPE_CHAIN (chain);
439 /* Same as above, but caller doesn't care about memory allocation
443 lookup_reference_type (struct type *type)
445 return make_reference_type (type, (struct type **) 0);
448 /* Lookup a function type that returns type TYPE. TYPEPTR, if
449 nonzero, points to a pointer to memory where the function type
450 should be stored. If *TYPEPTR is zero, update it to point to the
451 function type we return. We allocate new memory if needed. */
454 make_function_type (struct type *type, struct type **typeptr)
456 struct type *ntype; /* New type */
458 if (typeptr == 0 || *typeptr == 0) /* We'll need to allocate one. */
460 ntype = alloc_type_copy (type);
464 else /* We have storage, but need to reset it. */
470 TYPE_TARGET_TYPE (ntype) = type;
472 TYPE_LENGTH (ntype) = 1;
473 TYPE_CODE (ntype) = TYPE_CODE_FUNC;
475 INIT_FUNC_SPECIFIC (ntype);
480 /* Given a type TYPE, return a type of functions that return that type.
481 May need to construct such a type if this is the first use. */
484 lookup_function_type (struct type *type)
486 return make_function_type (type, (struct type **) 0);
489 /* Given a type TYPE and argument types, return the appropriate
490 function type. If the final type in PARAM_TYPES is NULL, make a
494 lookup_function_type_with_arguments (struct type *type,
496 struct type **param_types)
498 struct type *fn = make_function_type (type, (struct type **) 0);
503 if (param_types[nparams - 1] == NULL)
506 TYPE_VARARGS (fn) = 1;
508 else if (TYPE_CODE (check_typedef (param_types[nparams - 1]))
512 /* Caller should have ensured this. */
513 gdb_assert (nparams == 0);
514 TYPE_PROTOTYPED (fn) = 1;
518 TYPE_NFIELDS (fn) = nparams;
519 TYPE_FIELDS (fn) = TYPE_ZALLOC (fn, nparams * sizeof (struct field));
520 for (i = 0; i < nparams; ++i)
521 TYPE_FIELD_TYPE (fn, i) = param_types[i];
526 /* Identify address space identifier by name --
527 return the integer flag defined in gdbtypes.h. */
530 address_space_name_to_int (struct gdbarch *gdbarch, char *space_identifier)
534 /* Check for known address space delimiters. */
535 if (!strcmp (space_identifier, "code"))
536 return TYPE_INSTANCE_FLAG_CODE_SPACE;
537 else if (!strcmp (space_identifier, "data"))
538 return TYPE_INSTANCE_FLAG_DATA_SPACE;
539 else if (gdbarch_address_class_name_to_type_flags_p (gdbarch)
540 && gdbarch_address_class_name_to_type_flags (gdbarch,
545 error (_("Unknown address space specifier: \"%s\""), space_identifier);
548 /* Identify address space identifier by integer flag as defined in
549 gdbtypes.h -- return the string version of the adress space name. */
552 address_space_int_to_name (struct gdbarch *gdbarch, int space_flag)
554 if (space_flag & TYPE_INSTANCE_FLAG_CODE_SPACE)
556 else if (space_flag & TYPE_INSTANCE_FLAG_DATA_SPACE)
558 else if ((space_flag & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL)
559 && gdbarch_address_class_type_flags_to_name_p (gdbarch))
560 return gdbarch_address_class_type_flags_to_name (gdbarch, space_flag);
565 /* Create a new type with instance flags NEW_FLAGS, based on TYPE.
567 If STORAGE is non-NULL, create the new type instance there.
568 STORAGE must be in the same obstack as TYPE. */
571 make_qualified_type (struct type *type, int new_flags,
572 struct type *storage)
579 if (TYPE_INSTANCE_FLAGS (ntype) == new_flags)
581 ntype = TYPE_CHAIN (ntype);
583 while (ntype != type);
585 /* Create a new type instance. */
587 ntype = alloc_type_instance (type);
590 /* If STORAGE was provided, it had better be in the same objfile
591 as TYPE. Otherwise, we can't link it into TYPE's cv chain:
592 if one objfile is freed and the other kept, we'd have
593 dangling pointers. */
594 gdb_assert (TYPE_OBJFILE (type) == TYPE_OBJFILE (storage));
597 TYPE_MAIN_TYPE (ntype) = TYPE_MAIN_TYPE (type);
598 TYPE_CHAIN (ntype) = ntype;
601 /* Pointers or references to the original type are not relevant to
603 TYPE_POINTER_TYPE (ntype) = (struct type *) 0;
604 TYPE_REFERENCE_TYPE (ntype) = (struct type *) 0;
606 /* Chain the new qualified type to the old type. */
607 TYPE_CHAIN (ntype) = TYPE_CHAIN (type);
608 TYPE_CHAIN (type) = ntype;
610 /* Now set the instance flags and return the new type. */
611 TYPE_INSTANCE_FLAGS (ntype) = new_flags;
613 /* Set length of new type to that of the original type. */
614 TYPE_LENGTH (ntype) = TYPE_LENGTH (type);
619 /* Make an address-space-delimited variant of a type -- a type that
620 is identical to the one supplied except that it has an address
621 space attribute attached to it (such as "code" or "data").
623 The space attributes "code" and "data" are for Harvard
624 architectures. The address space attributes are for architectures
625 which have alternately sized pointers or pointers with alternate
629 make_type_with_address_space (struct type *type, int space_flag)
631 int new_flags = ((TYPE_INSTANCE_FLAGS (type)
632 & ~(TYPE_INSTANCE_FLAG_CODE_SPACE
633 | TYPE_INSTANCE_FLAG_DATA_SPACE
634 | TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL))
637 return make_qualified_type (type, new_flags, NULL);
640 /* Make a "c-v" variant of a type -- a type that is identical to the
641 one supplied except that it may have const or volatile attributes
642 CNST is a flag for setting the const attribute
643 VOLTL is a flag for setting the volatile attribute
644 TYPE is the base type whose variant we are creating.
646 If TYPEPTR and *TYPEPTR are non-zero, then *TYPEPTR points to
647 storage to hold the new qualified type; *TYPEPTR and TYPE must be
648 in the same objfile. Otherwise, allocate fresh memory for the new
649 type whereever TYPE lives. If TYPEPTR is non-zero, set it to the
650 new type we construct. */
653 make_cv_type (int cnst, int voltl,
655 struct type **typeptr)
657 struct type *ntype; /* New type */
659 int new_flags = (TYPE_INSTANCE_FLAGS (type)
660 & ~(TYPE_INSTANCE_FLAG_CONST
661 | TYPE_INSTANCE_FLAG_VOLATILE));
664 new_flags |= TYPE_INSTANCE_FLAG_CONST;
667 new_flags |= TYPE_INSTANCE_FLAG_VOLATILE;
669 if (typeptr && *typeptr != NULL)
671 /* TYPE and *TYPEPTR must be in the same objfile. We can't have
672 a C-V variant chain that threads across objfiles: if one
673 objfile gets freed, then the other has a broken C-V chain.
675 This code used to try to copy over the main type from TYPE to
676 *TYPEPTR if they were in different objfiles, but that's
677 wrong, too: TYPE may have a field list or member function
678 lists, which refer to types of their own, etc. etc. The
679 whole shebang would need to be copied over recursively; you
680 can't have inter-objfile pointers. The only thing to do is
681 to leave stub types as stub types, and look them up afresh by
682 name each time you encounter them. */
683 gdb_assert (TYPE_OBJFILE (*typeptr) == TYPE_OBJFILE (type));
686 ntype = make_qualified_type (type, new_flags,
687 typeptr ? *typeptr : NULL);
695 /* Make a 'restrict'-qualified version of TYPE. */
698 make_restrict_type (struct type *type)
700 return make_qualified_type (type,
701 (TYPE_INSTANCE_FLAGS (type)
702 | TYPE_INSTANCE_FLAG_RESTRICT),
706 /* Replace the contents of ntype with the type *type. This changes the
707 contents, rather than the pointer for TYPE_MAIN_TYPE (ntype); thus
708 the changes are propogated to all types in the TYPE_CHAIN.
710 In order to build recursive types, it's inevitable that we'll need
711 to update types in place --- but this sort of indiscriminate
712 smashing is ugly, and needs to be replaced with something more
713 controlled. TYPE_MAIN_TYPE is a step in this direction; it's not
714 clear if more steps are needed. */
717 replace_type (struct type *ntype, struct type *type)
721 /* These two types had better be in the same objfile. Otherwise,
722 the assignment of one type's main type structure to the other
723 will produce a type with references to objects (names; field
724 lists; etc.) allocated on an objfile other than its own. */
725 gdb_assert (TYPE_OBJFILE (ntype) == TYPE_OBJFILE (ntype));
727 *TYPE_MAIN_TYPE (ntype) = *TYPE_MAIN_TYPE (type);
729 /* The type length is not a part of the main type. Update it for
730 each type on the variant chain. */
734 /* Assert that this element of the chain has no address-class bits
735 set in its flags. Such type variants might have type lengths
736 which are supposed to be different from the non-address-class
737 variants. This assertion shouldn't ever be triggered because
738 symbol readers which do construct address-class variants don't
739 call replace_type(). */
740 gdb_assert (TYPE_ADDRESS_CLASS_ALL (chain) == 0);
742 TYPE_LENGTH (chain) = TYPE_LENGTH (type);
743 chain = TYPE_CHAIN (chain);
745 while (ntype != chain);
747 /* Assert that the two types have equivalent instance qualifiers.
748 This should be true for at least all of our debug readers. */
749 gdb_assert (TYPE_INSTANCE_FLAGS (ntype) == TYPE_INSTANCE_FLAGS (type));
752 /* Implement direct support for MEMBER_TYPE in GNU C++.
753 May need to construct such a type if this is the first use.
754 The TYPE is the type of the member. The DOMAIN is the type
755 of the aggregate that the member belongs to. */
758 lookup_memberptr_type (struct type *type, struct type *domain)
762 mtype = alloc_type_copy (type);
763 smash_to_memberptr_type (mtype, domain, type);
767 /* Return a pointer-to-method type, for a method of type TO_TYPE. */
770 lookup_methodptr_type (struct type *to_type)
774 mtype = alloc_type_copy (to_type);
775 smash_to_methodptr_type (mtype, to_type);
779 /* Allocate a stub method whose return type is TYPE. This apparently
780 happens for speed of symbol reading, since parsing out the
781 arguments to the method is cpu-intensive, the way we are doing it.
782 So, we will fill in arguments later. This always returns a fresh
786 allocate_stub_method (struct type *type)
790 mtype = alloc_type_copy (type);
791 TYPE_CODE (mtype) = TYPE_CODE_METHOD;
792 TYPE_LENGTH (mtype) = 1;
793 TYPE_STUB (mtype) = 1;
794 TYPE_TARGET_TYPE (mtype) = type;
795 /* _DOMAIN_TYPE (mtype) = unknown yet */
799 /* Create a range type with a dynamic range from LOW_BOUND to
800 HIGH_BOUND, inclusive. See create_range_type for further details. */
803 create_range_type (struct type *result_type, struct type *index_type,
804 const struct dynamic_prop *low_bound,
805 const struct dynamic_prop *high_bound)
807 if (result_type == NULL)
808 result_type = alloc_type_copy (index_type);
809 TYPE_CODE (result_type) = TYPE_CODE_RANGE;
810 TYPE_TARGET_TYPE (result_type) = index_type;
811 if (TYPE_STUB (index_type))
812 TYPE_TARGET_STUB (result_type) = 1;
814 TYPE_LENGTH (result_type) = TYPE_LENGTH (check_typedef (index_type));
816 TYPE_RANGE_DATA (result_type) = (struct range_bounds *)
817 TYPE_ZALLOC (result_type, sizeof (struct range_bounds));
818 TYPE_RANGE_DATA (result_type)->low = *low_bound;
819 TYPE_RANGE_DATA (result_type)->high = *high_bound;
821 if (low_bound->kind == PROP_CONST && low_bound->data.const_val >= 0)
822 TYPE_UNSIGNED (result_type) = 1;
827 /* Create a range type using either a blank type supplied in
828 RESULT_TYPE, or creating a new type, inheriting the objfile from
831 Indices will be of type INDEX_TYPE, and will range from LOW_BOUND
832 to HIGH_BOUND, inclusive.
834 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
835 sure it is TYPE_CODE_UNDEF before we bash it into a range type? */
838 create_static_range_type (struct type *result_type, struct type *index_type,
839 LONGEST low_bound, LONGEST high_bound)
841 struct dynamic_prop low, high;
843 low.kind = PROP_CONST;
844 low.data.const_val = low_bound;
846 high.kind = PROP_CONST;
847 high.data.const_val = high_bound;
849 result_type = create_range_type (result_type, index_type, &low, &high);
854 /* Predicate tests whether BOUNDS are static. Returns 1 if all bounds values
855 are static, otherwise returns 0. */
858 has_static_range (const struct range_bounds *bounds)
860 return (bounds->low.kind == PROP_CONST
861 && bounds->high.kind == PROP_CONST);
865 /* Set *LOWP and *HIGHP to the lower and upper bounds of discrete type
866 TYPE. Return 1 if type is a range type, 0 if it is discrete (and
867 bounds will fit in LONGEST), or -1 otherwise. */
870 get_discrete_bounds (struct type *type, LONGEST *lowp, LONGEST *highp)
872 CHECK_TYPEDEF (type);
873 switch (TYPE_CODE (type))
875 case TYPE_CODE_RANGE:
876 *lowp = TYPE_LOW_BOUND (type);
877 *highp = TYPE_HIGH_BOUND (type);
880 if (TYPE_NFIELDS (type) > 0)
882 /* The enums may not be sorted by value, so search all
886 *lowp = *highp = TYPE_FIELD_ENUMVAL (type, 0);
887 for (i = 0; i < TYPE_NFIELDS (type); i++)
889 if (TYPE_FIELD_ENUMVAL (type, i) < *lowp)
890 *lowp = TYPE_FIELD_ENUMVAL (type, i);
891 if (TYPE_FIELD_ENUMVAL (type, i) > *highp)
892 *highp = TYPE_FIELD_ENUMVAL (type, i);
895 /* Set unsigned indicator if warranted. */
898 TYPE_UNSIGNED (type) = 1;
912 if (TYPE_LENGTH (type) > sizeof (LONGEST)) /* Too big */
914 if (!TYPE_UNSIGNED (type))
916 *lowp = -(1 << (TYPE_LENGTH (type) * TARGET_CHAR_BIT - 1));
920 /* ... fall through for unsigned ints ... */
923 /* This round-about calculation is to avoid shifting by
924 TYPE_LENGTH (type) * TARGET_CHAR_BIT, which will not work
925 if TYPE_LENGTH (type) == sizeof (LONGEST). */
926 *highp = 1 << (TYPE_LENGTH (type) * TARGET_CHAR_BIT - 1);
927 *highp = (*highp - 1) | *highp;
934 /* Assuming TYPE is a simple, non-empty array type, compute its upper
935 and lower bound. Save the low bound into LOW_BOUND if not NULL.
936 Save the high bound into HIGH_BOUND if not NULL.
938 Return 1 if the operation was successful. Return zero otherwise,
939 in which case the values of LOW_BOUND and HIGH_BOUNDS are unmodified.
941 We now simply use get_discrete_bounds call to get the values
942 of the low and high bounds.
943 get_discrete_bounds can return three values:
944 1, meaning that index is a range,
945 0, meaning that index is a discrete type,
946 or -1 for failure. */
949 get_array_bounds (struct type *type, LONGEST *low_bound, LONGEST *high_bound)
951 struct type *index = TYPE_INDEX_TYPE (type);
959 res = get_discrete_bounds (index, &low, &high);
963 /* Check if the array bounds are undefined. */
965 && ((low_bound && TYPE_ARRAY_LOWER_BOUND_IS_UNDEFINED (type))
966 || (high_bound && TYPE_ARRAY_UPPER_BOUND_IS_UNDEFINED (type))))
978 /* Create an array type using either a blank type supplied in
979 RESULT_TYPE, or creating a new type, inheriting the objfile from
982 Elements will be of type ELEMENT_TYPE, the indices will be of type
985 If BIT_STRIDE is not zero, build a packed array type whose element
986 size is BIT_STRIDE. Otherwise, ignore this parameter.
988 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
989 sure it is TYPE_CODE_UNDEF before we bash it into an array
993 create_array_type_with_stride (struct type *result_type,
994 struct type *element_type,
995 struct type *range_type,
996 unsigned int bit_stride)
998 if (result_type == NULL)
999 result_type = alloc_type_copy (range_type);
1001 TYPE_CODE (result_type) = TYPE_CODE_ARRAY;
1002 TYPE_TARGET_TYPE (result_type) = element_type;
1003 if (has_static_range (TYPE_RANGE_DATA (range_type)))
1005 LONGEST low_bound, high_bound;
1007 if (get_discrete_bounds (range_type, &low_bound, &high_bound) < 0)
1008 low_bound = high_bound = 0;
1009 CHECK_TYPEDEF (element_type);
1010 /* Be careful when setting the array length. Ada arrays can be
1011 empty arrays with the high_bound being smaller than the low_bound.
1012 In such cases, the array length should be zero. */
1013 if (high_bound < low_bound)
1014 TYPE_LENGTH (result_type) = 0;
1015 else if (bit_stride > 0)
1016 TYPE_LENGTH (result_type) =
1017 (bit_stride * (high_bound - low_bound + 1) + 7) / 8;
1019 TYPE_LENGTH (result_type) =
1020 TYPE_LENGTH (element_type) * (high_bound - low_bound + 1);
1024 /* This type is dynamic and its length needs to be computed
1025 on demand. In the meantime, avoid leaving the TYPE_LENGTH
1026 undefined by setting it to zero. Although we are not expected
1027 to trust TYPE_LENGTH in this case, setting the size to zero
1028 allows us to avoid allocating objects of random sizes in case
1029 we accidently do. */
1030 TYPE_LENGTH (result_type) = 0;
1033 TYPE_NFIELDS (result_type) = 1;
1034 TYPE_FIELDS (result_type) =
1035 (struct field *) TYPE_ZALLOC (result_type, sizeof (struct field));
1036 TYPE_INDEX_TYPE (result_type) = range_type;
1037 TYPE_VPTR_FIELDNO (result_type) = -1;
1039 TYPE_FIELD_BITSIZE (result_type, 0) = bit_stride;
1041 /* TYPE_FLAG_TARGET_STUB will take care of zero length arrays. */
1042 if (TYPE_LENGTH (result_type) == 0)
1043 TYPE_TARGET_STUB (result_type) = 1;
1048 /* Same as create_array_type_with_stride but with no bit_stride
1049 (BIT_STRIDE = 0), thus building an unpacked array. */
1052 create_array_type (struct type *result_type,
1053 struct type *element_type,
1054 struct type *range_type)
1056 return create_array_type_with_stride (result_type, element_type,
1061 lookup_array_range_type (struct type *element_type,
1062 LONGEST low_bound, LONGEST high_bound)
1064 struct gdbarch *gdbarch = get_type_arch (element_type);
1065 struct type *index_type = builtin_type (gdbarch)->builtin_int;
1066 struct type *range_type
1067 = create_static_range_type (NULL, index_type, low_bound, high_bound);
1069 return create_array_type (NULL, element_type, range_type);
1072 /* Create a string type using either a blank type supplied in
1073 RESULT_TYPE, or creating a new type. String types are similar
1074 enough to array of char types that we can use create_array_type to
1075 build the basic type and then bash it into a string type.
1077 For fixed length strings, the range type contains 0 as the lower
1078 bound and the length of the string minus one as the upper bound.
1080 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
1081 sure it is TYPE_CODE_UNDEF before we bash it into a string
1085 create_string_type (struct type *result_type,
1086 struct type *string_char_type,
1087 struct type *range_type)
1089 result_type = create_array_type (result_type,
1092 TYPE_CODE (result_type) = TYPE_CODE_STRING;
1097 lookup_string_range_type (struct type *string_char_type,
1098 LONGEST low_bound, LONGEST high_bound)
1100 struct type *result_type;
1102 result_type = lookup_array_range_type (string_char_type,
1103 low_bound, high_bound);
1104 TYPE_CODE (result_type) = TYPE_CODE_STRING;
1109 create_set_type (struct type *result_type, struct type *domain_type)
1111 if (result_type == NULL)
1112 result_type = alloc_type_copy (domain_type);
1114 TYPE_CODE (result_type) = TYPE_CODE_SET;
1115 TYPE_NFIELDS (result_type) = 1;
1116 TYPE_FIELDS (result_type) = TYPE_ZALLOC (result_type, sizeof (struct field));
1118 if (!TYPE_STUB (domain_type))
1120 LONGEST low_bound, high_bound, bit_length;
1122 if (get_discrete_bounds (domain_type, &low_bound, &high_bound) < 0)
1123 low_bound = high_bound = 0;
1124 bit_length = high_bound - low_bound + 1;
1125 TYPE_LENGTH (result_type)
1126 = (bit_length + TARGET_CHAR_BIT - 1) / TARGET_CHAR_BIT;
1128 TYPE_UNSIGNED (result_type) = 1;
1130 TYPE_FIELD_TYPE (result_type, 0) = domain_type;
1135 /* Convert ARRAY_TYPE to a vector type. This may modify ARRAY_TYPE
1136 and any array types nested inside it. */
1139 make_vector_type (struct type *array_type)
1141 struct type *inner_array, *elt_type;
1144 /* Find the innermost array type, in case the array is
1145 multi-dimensional. */
1146 inner_array = array_type;
1147 while (TYPE_CODE (TYPE_TARGET_TYPE (inner_array)) == TYPE_CODE_ARRAY)
1148 inner_array = TYPE_TARGET_TYPE (inner_array);
1150 elt_type = TYPE_TARGET_TYPE (inner_array);
1151 if (TYPE_CODE (elt_type) == TYPE_CODE_INT)
1153 flags = TYPE_INSTANCE_FLAGS (elt_type) | TYPE_INSTANCE_FLAG_NOTTEXT;
1154 elt_type = make_qualified_type (elt_type, flags, NULL);
1155 TYPE_TARGET_TYPE (inner_array) = elt_type;
1158 TYPE_VECTOR (array_type) = 1;
1162 init_vector_type (struct type *elt_type, int n)
1164 struct type *array_type;
1166 array_type = lookup_array_range_type (elt_type, 0, n - 1);
1167 make_vector_type (array_type);
1171 /* Smash TYPE to be a type of pointers to members of DOMAIN with type
1172 TO_TYPE. A member pointer is a wierd thing -- it amounts to a
1173 typed offset into a struct, e.g. "an int at offset 8". A MEMBER
1174 TYPE doesn't include the offset (that's the value of the MEMBER
1175 itself), but does include the structure type into which it points
1178 When "smashing" the type, we preserve the objfile that the old type
1179 pointed to, since we aren't changing where the type is actually
1183 smash_to_memberptr_type (struct type *type, struct type *domain,
1184 struct type *to_type)
1187 TYPE_TARGET_TYPE (type) = to_type;
1188 TYPE_DOMAIN_TYPE (type) = domain;
1189 /* Assume that a data member pointer is the same size as a normal
1192 = gdbarch_ptr_bit (get_type_arch (to_type)) / TARGET_CHAR_BIT;
1193 TYPE_CODE (type) = TYPE_CODE_MEMBERPTR;
1196 /* Smash TYPE to be a type of pointer to methods type TO_TYPE.
1198 When "smashing" the type, we preserve the objfile that the old type
1199 pointed to, since we aren't changing where the type is actually
1203 smash_to_methodptr_type (struct type *type, struct type *to_type)
1206 TYPE_TARGET_TYPE (type) = to_type;
1207 TYPE_DOMAIN_TYPE (type) = TYPE_DOMAIN_TYPE (to_type);
1208 TYPE_LENGTH (type) = cplus_method_ptr_size (to_type);
1209 TYPE_CODE (type) = TYPE_CODE_METHODPTR;
1212 /* Smash TYPE to be a type of method of DOMAIN with type TO_TYPE.
1213 METHOD just means `function that gets an extra "this" argument'.
1215 When "smashing" the type, we preserve the objfile that the old type
1216 pointed to, since we aren't changing where the type is actually
1220 smash_to_method_type (struct type *type, struct type *domain,
1221 struct type *to_type, struct field *args,
1222 int nargs, int varargs)
1225 TYPE_TARGET_TYPE (type) = to_type;
1226 TYPE_DOMAIN_TYPE (type) = domain;
1227 TYPE_FIELDS (type) = args;
1228 TYPE_NFIELDS (type) = nargs;
1230 TYPE_VARARGS (type) = 1;
1231 TYPE_LENGTH (type) = 1; /* In practice, this is never needed. */
1232 TYPE_CODE (type) = TYPE_CODE_METHOD;
1235 /* Return a typename for a struct/union/enum type without "struct ",
1236 "union ", or "enum ". If the type has a NULL name, return NULL. */
1239 type_name_no_tag (const struct type *type)
1241 if (TYPE_TAG_NAME (type) != NULL)
1242 return TYPE_TAG_NAME (type);
1244 /* Is there code which expects this to return the name if there is
1245 no tag name? My guess is that this is mainly used for C++ in
1246 cases where the two will always be the same. */
1247 return TYPE_NAME (type);
1250 /* A wrapper of type_name_no_tag which calls error if the type is anonymous.
1251 Since GCC PR debug/47510 DWARF provides associated information to detect the
1252 anonymous class linkage name from its typedef.
1254 Parameter TYPE should not yet have CHECK_TYPEDEF applied, this function will
1258 type_name_no_tag_or_error (struct type *type)
1260 struct type *saved_type = type;
1262 struct objfile *objfile;
1264 CHECK_TYPEDEF (type);
1266 name = type_name_no_tag (type);
1270 name = type_name_no_tag (saved_type);
1271 objfile = TYPE_OBJFILE (saved_type);
1272 error (_("Invalid anonymous type %s [in module %s], GCC PR debug/47510 bug?"),
1273 name ? name : "<anonymous>",
1274 objfile ? objfile_name (objfile) : "<arch>");
1277 /* Lookup a typedef or primitive type named NAME, visible in lexical
1278 block BLOCK. If NOERR is nonzero, return zero if NAME is not
1279 suitably defined. */
1282 lookup_typename (const struct language_defn *language,
1283 struct gdbarch *gdbarch, const char *name,
1284 const struct block *block, int noerr)
1289 sym = lookup_symbol (name, block, VAR_DOMAIN, 0);
1290 if (sym != NULL && SYMBOL_CLASS (sym) == LOC_TYPEDEF)
1291 return SYMBOL_TYPE (sym);
1293 type = language_lookup_primitive_type_by_name (language, gdbarch, name);
1299 error (_("No type named %s."), name);
1303 lookup_unsigned_typename (const struct language_defn *language,
1304 struct gdbarch *gdbarch, const char *name)
1306 char *uns = alloca (strlen (name) + 10);
1308 strcpy (uns, "unsigned ");
1309 strcpy (uns + 9, name);
1310 return lookup_typename (language, gdbarch, uns, (struct block *) NULL, 0);
1314 lookup_signed_typename (const struct language_defn *language,
1315 struct gdbarch *gdbarch, const char *name)
1318 char *uns = alloca (strlen (name) + 8);
1320 strcpy (uns, "signed ");
1321 strcpy (uns + 7, name);
1322 t = lookup_typename (language, gdbarch, uns, (struct block *) NULL, 1);
1323 /* If we don't find "signed FOO" just try again with plain "FOO". */
1326 return lookup_typename (language, gdbarch, name, (struct block *) NULL, 0);
1329 /* Lookup a structure type named "struct NAME",
1330 visible in lexical block BLOCK. */
1333 lookup_struct (const char *name, const struct block *block)
1337 sym = lookup_symbol (name, block, STRUCT_DOMAIN, 0);
1341 error (_("No struct type named %s."), name);
1343 if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_STRUCT)
1345 error (_("This context has class, union or enum %s, not a struct."),
1348 return (SYMBOL_TYPE (sym));
1351 /* Lookup a union type named "union NAME",
1352 visible in lexical block BLOCK. */
1355 lookup_union (const char *name, const struct block *block)
1360 sym = lookup_symbol (name, block, STRUCT_DOMAIN, 0);
1363 error (_("No union type named %s."), name);
1365 t = SYMBOL_TYPE (sym);
1367 if (TYPE_CODE (t) == TYPE_CODE_UNION)
1370 /* If we get here, it's not a union. */
1371 error (_("This context has class, struct or enum %s, not a union."),
1375 /* Lookup an enum type named "enum NAME",
1376 visible in lexical block BLOCK. */
1379 lookup_enum (const char *name, const struct block *block)
1383 sym = lookup_symbol (name, block, STRUCT_DOMAIN, 0);
1386 error (_("No enum type named %s."), name);
1388 if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_ENUM)
1390 error (_("This context has class, struct or union %s, not an enum."),
1393 return (SYMBOL_TYPE (sym));
1396 /* Lookup a template type named "template NAME<TYPE>",
1397 visible in lexical block BLOCK. */
1400 lookup_template_type (char *name, struct type *type,
1401 const struct block *block)
1404 char *nam = (char *)
1405 alloca (strlen (name) + strlen (TYPE_NAME (type)) + 4);
1409 strcat (nam, TYPE_NAME (type));
1410 strcat (nam, " >"); /* FIXME, extra space still introduced in gcc? */
1412 sym = lookup_symbol (nam, block, VAR_DOMAIN, 0);
1416 error (_("No template type named %s."), name);
1418 if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_STRUCT)
1420 error (_("This context has class, union or enum %s, not a struct."),
1423 return (SYMBOL_TYPE (sym));
1426 /* Given a type TYPE, lookup the type of the component of type named
1429 TYPE can be either a struct or union, or a pointer or reference to
1430 a struct or union. If it is a pointer or reference, its target
1431 type is automatically used. Thus '.' and '->' are interchangable,
1432 as specified for the definitions of the expression element types
1433 STRUCTOP_STRUCT and STRUCTOP_PTR.
1435 If NOERR is nonzero, return zero if NAME is not suitably defined.
1436 If NAME is the name of a baseclass type, return that type. */
1439 lookup_struct_elt_type (struct type *type, const char *name, int noerr)
1446 CHECK_TYPEDEF (type);
1447 if (TYPE_CODE (type) != TYPE_CODE_PTR
1448 && TYPE_CODE (type) != TYPE_CODE_REF)
1450 type = TYPE_TARGET_TYPE (type);
1453 if (TYPE_CODE (type) != TYPE_CODE_STRUCT
1454 && TYPE_CODE (type) != TYPE_CODE_UNION)
1456 typename = type_to_string (type);
1457 make_cleanup (xfree, typename);
1458 error (_("Type %s is not a structure or union type."), typename);
1462 /* FIXME: This change put in by Michael seems incorrect for the case
1463 where the structure tag name is the same as the member name.
1464 I.e. when doing "ptype bell->bar" for "struct foo { int bar; int
1465 foo; } bell;" Disabled by fnf. */
1469 typename = type_name_no_tag (type);
1470 if (typename != NULL && strcmp (typename, name) == 0)
1475 for (i = TYPE_NFIELDS (type) - 1; i >= TYPE_N_BASECLASSES (type); i--)
1477 const char *t_field_name = TYPE_FIELD_NAME (type, i);
1479 if (t_field_name && (strcmp_iw (t_field_name, name) == 0))
1481 return TYPE_FIELD_TYPE (type, i);
1483 else if (!t_field_name || *t_field_name == '\0')
1485 struct type *subtype
1486 = lookup_struct_elt_type (TYPE_FIELD_TYPE (type, i), name, 1);
1488 if (subtype != NULL)
1493 /* OK, it's not in this class. Recursively check the baseclasses. */
1494 for (i = TYPE_N_BASECLASSES (type) - 1; i >= 0; i--)
1498 t = lookup_struct_elt_type (TYPE_BASECLASS (type, i), name, 1);
1510 typename = type_to_string (type);
1511 make_cleanup (xfree, typename);
1512 error (_("Type %s has no component named %s."), typename, name);
1515 /* Store in *MAX the largest number representable by unsigned integer type
1519 get_unsigned_type_max (struct type *type, ULONGEST *max)
1523 CHECK_TYPEDEF (type);
1524 gdb_assert (TYPE_CODE (type) == TYPE_CODE_INT && TYPE_UNSIGNED (type));
1525 gdb_assert (TYPE_LENGTH (type) <= sizeof (ULONGEST));
1527 /* Written this way to avoid overflow. */
1528 n = TYPE_LENGTH (type) * TARGET_CHAR_BIT;
1529 *max = ((((ULONGEST) 1 << (n - 1)) - 1) << 1) | 1;
1532 /* Store in *MIN, *MAX the smallest and largest numbers representable by
1533 signed integer type TYPE. */
1536 get_signed_type_minmax (struct type *type, LONGEST *min, LONGEST *max)
1540 CHECK_TYPEDEF (type);
1541 gdb_assert (TYPE_CODE (type) == TYPE_CODE_INT && !TYPE_UNSIGNED (type));
1542 gdb_assert (TYPE_LENGTH (type) <= sizeof (LONGEST));
1544 n = TYPE_LENGTH (type) * TARGET_CHAR_BIT;
1545 *min = -((ULONGEST) 1 << (n - 1));
1546 *max = ((ULONGEST) 1 << (n - 1)) - 1;
1549 /* Lookup the vptr basetype/fieldno values for TYPE.
1550 If found store vptr_basetype in *BASETYPEP if non-NULL, and return
1551 vptr_fieldno. Also, if found and basetype is from the same objfile,
1553 If not found, return -1 and ignore BASETYPEP.
1554 Callers should be aware that in some cases (for example,
1555 the type or one of its baseclasses is a stub type and we are
1556 debugging a .o file, or the compiler uses DWARF-2 and is not GCC),
1557 this function will not be able to find the
1558 virtual function table pointer, and vptr_fieldno will remain -1 and
1559 vptr_basetype will remain NULL or incomplete. */
1562 get_vptr_fieldno (struct type *type, struct type **basetypep)
1564 CHECK_TYPEDEF (type);
1566 if (TYPE_VPTR_FIELDNO (type) < 0)
1570 /* We must start at zero in case the first (and only) baseclass
1571 is virtual (and hence we cannot share the table pointer). */
1572 for (i = 0; i < TYPE_N_BASECLASSES (type); i++)
1574 struct type *baseclass = check_typedef (TYPE_BASECLASS (type, i));
1576 struct type *basetype;
1578 fieldno = get_vptr_fieldno (baseclass, &basetype);
1581 /* If the type comes from a different objfile we can't cache
1582 it, it may have a different lifetime. PR 2384 */
1583 if (TYPE_OBJFILE (type) == TYPE_OBJFILE (basetype))
1585 TYPE_VPTR_FIELDNO (type) = fieldno;
1586 TYPE_VPTR_BASETYPE (type) = basetype;
1589 *basetypep = basetype;
1600 *basetypep = TYPE_VPTR_BASETYPE (type);
1601 return TYPE_VPTR_FIELDNO (type);
1606 stub_noname_complaint (void)
1608 complaint (&symfile_complaints, _("stub type has NULL name"));
1611 /* Worker for is_dynamic_type. */
1614 is_dynamic_type_internal (struct type *type, int top_level)
1616 type = check_typedef (type);
1618 /* We only want to recognize references at the outermost level. */
1619 if (top_level && TYPE_CODE (type) == TYPE_CODE_REF)
1620 type = check_typedef (TYPE_TARGET_TYPE (type));
1622 /* Types that have a dynamic TYPE_DATA_LOCATION are considered
1623 dynamic, even if the type itself is statically defined.
1624 From a user's point of view, this may appear counter-intuitive;
1625 but it makes sense in this context, because the point is to determine
1626 whether any part of the type needs to be resolved before it can
1628 if (TYPE_DATA_LOCATION (type) != NULL
1629 && (TYPE_DATA_LOCATION_KIND (type) == PROP_LOCEXPR
1630 || TYPE_DATA_LOCATION_KIND (type) == PROP_LOCLIST))
1633 switch (TYPE_CODE (type))
1635 case TYPE_CODE_RANGE:
1636 return !has_static_range (TYPE_RANGE_DATA (type));
1638 case TYPE_CODE_ARRAY:
1640 gdb_assert (TYPE_NFIELDS (type) == 1);
1642 /* The array is dynamic if either the bounds are dynamic,
1643 or the elements it contains have a dynamic contents. */
1644 if (is_dynamic_type_internal (TYPE_INDEX_TYPE (type), 0))
1646 return is_dynamic_type_internal (TYPE_TARGET_TYPE (type), 0);
1649 case TYPE_CODE_STRUCT:
1650 case TYPE_CODE_UNION:
1654 for (i = 0; i < TYPE_NFIELDS (type); ++i)
1655 if (!field_is_static (&TYPE_FIELD (type, i))
1656 && is_dynamic_type_internal (TYPE_FIELD_TYPE (type, i), 0))
1665 /* See gdbtypes.h. */
1668 is_dynamic_type (struct type *type)
1670 return is_dynamic_type_internal (type, 1);
1673 static struct type *resolve_dynamic_type_internal (struct type *type,
1677 /* Given a dynamic range type (dyn_range_type) and address,
1678 return a static version of that type. */
1680 static struct type *
1681 resolve_dynamic_range (struct type *dyn_range_type, CORE_ADDR addr)
1684 struct type *static_range_type;
1685 const struct dynamic_prop *prop;
1686 const struct dwarf2_locexpr_baton *baton;
1687 struct dynamic_prop low_bound, high_bound;
1689 gdb_assert (TYPE_CODE (dyn_range_type) == TYPE_CODE_RANGE);
1691 prop = &TYPE_RANGE_DATA (dyn_range_type)->low;
1692 if (dwarf2_evaluate_property (prop, addr, &value))
1694 low_bound.kind = PROP_CONST;
1695 low_bound.data.const_val = value;
1699 low_bound.kind = PROP_UNDEFINED;
1700 low_bound.data.const_val = 0;
1703 prop = &TYPE_RANGE_DATA (dyn_range_type)->high;
1704 if (dwarf2_evaluate_property (prop, addr, &value))
1706 high_bound.kind = PROP_CONST;
1707 high_bound.data.const_val = value;
1709 if (TYPE_RANGE_DATA (dyn_range_type)->flag_upper_bound_is_count)
1710 high_bound.data.const_val
1711 = low_bound.data.const_val + high_bound.data.const_val - 1;
1715 high_bound.kind = PROP_UNDEFINED;
1716 high_bound.data.const_val = 0;
1719 static_range_type = create_range_type (copy_type (dyn_range_type),
1720 TYPE_TARGET_TYPE (dyn_range_type),
1721 &low_bound, &high_bound);
1722 TYPE_RANGE_DATA (static_range_type)->flag_bound_evaluated = 1;
1723 return static_range_type;
1726 /* Resolves dynamic bound values of an array type TYPE to static ones.
1727 ADDRESS might be needed to resolve the subrange bounds, it is the location
1728 of the associated array. */
1730 static struct type *
1731 resolve_dynamic_array (struct type *type, CORE_ADDR addr)
1734 struct type *elt_type;
1735 struct type *range_type;
1736 struct type *ary_dim;
1738 gdb_assert (TYPE_CODE (type) == TYPE_CODE_ARRAY);
1741 range_type = check_typedef (TYPE_INDEX_TYPE (elt_type));
1742 range_type = resolve_dynamic_range (range_type, addr);
1744 ary_dim = check_typedef (TYPE_TARGET_TYPE (elt_type));
1746 if (ary_dim != NULL && TYPE_CODE (ary_dim) == TYPE_CODE_ARRAY)
1747 elt_type = resolve_dynamic_array (TYPE_TARGET_TYPE (type), addr);
1749 elt_type = TYPE_TARGET_TYPE (type);
1751 return create_array_type (copy_type (type),
1756 /* Resolve dynamic bounds of members of the union TYPE to static
1759 static struct type *
1760 resolve_dynamic_union (struct type *type, CORE_ADDR addr)
1762 struct type *resolved_type;
1764 unsigned int max_len = 0;
1766 gdb_assert (TYPE_CODE (type) == TYPE_CODE_UNION);
1768 resolved_type = copy_type (type);
1769 TYPE_FIELDS (resolved_type)
1770 = TYPE_ALLOC (resolved_type,
1771 TYPE_NFIELDS (resolved_type) * sizeof (struct field));
1772 memcpy (TYPE_FIELDS (resolved_type),
1774 TYPE_NFIELDS (resolved_type) * sizeof (struct field));
1775 for (i = 0; i < TYPE_NFIELDS (resolved_type); ++i)
1779 if (field_is_static (&TYPE_FIELD (type, i)))
1782 t = resolve_dynamic_type_internal (TYPE_FIELD_TYPE (resolved_type, i),
1784 TYPE_FIELD_TYPE (resolved_type, i) = t;
1785 if (TYPE_LENGTH (t) > max_len)
1786 max_len = TYPE_LENGTH (t);
1789 TYPE_LENGTH (resolved_type) = max_len;
1790 return resolved_type;
1793 /* Resolve dynamic bounds of members of the struct TYPE to static
1796 static struct type *
1797 resolve_dynamic_struct (struct type *type, CORE_ADDR addr)
1799 struct type *resolved_type;
1801 unsigned resolved_type_bit_length = 0;
1803 gdb_assert (TYPE_CODE (type) == TYPE_CODE_STRUCT);
1804 gdb_assert (TYPE_NFIELDS (type) > 0);
1806 resolved_type = copy_type (type);
1807 TYPE_FIELDS (resolved_type)
1808 = TYPE_ALLOC (resolved_type,
1809 TYPE_NFIELDS (resolved_type) * sizeof (struct field));
1810 memcpy (TYPE_FIELDS (resolved_type),
1812 TYPE_NFIELDS (resolved_type) * sizeof (struct field));
1813 for (i = 0; i < TYPE_NFIELDS (resolved_type); ++i)
1815 unsigned new_bit_length;
1817 if (field_is_static (&TYPE_FIELD (type, i)))
1820 TYPE_FIELD_TYPE (resolved_type, i)
1821 = resolve_dynamic_type_internal (TYPE_FIELD_TYPE (resolved_type, i),
1824 /* As we know this field is not a static field, the field's
1825 field_loc_kind should be FIELD_LOC_KIND_BITPOS. Verify
1826 this is the case, but only trigger a simple error rather
1827 than an internal error if that fails. While failing
1828 that verification indicates a bug in our code, the error
1829 is not severe enough to suggest to the user he stops
1830 his debugging session because of it. */
1831 if (TYPE_FIELD_LOC_KIND (resolved_type, i) != FIELD_LOC_KIND_BITPOS)
1832 error (_("Cannot determine struct field location"
1833 " (invalid location kind)"));
1834 new_bit_length = TYPE_FIELD_BITPOS (resolved_type, i);
1835 if (TYPE_FIELD_BITSIZE (resolved_type, i) != 0)
1836 new_bit_length += TYPE_FIELD_BITSIZE (resolved_type, i);
1838 new_bit_length += (TYPE_LENGTH (TYPE_FIELD_TYPE (resolved_type, i))
1841 /* Normally, we would use the position and size of the last field
1842 to determine the size of the enclosing structure. But GCC seems
1843 to be encoding the position of some fields incorrectly when
1844 the struct contains a dynamic field that is not placed last.
1845 So we compute the struct size based on the field that has
1846 the highest position + size - probably the best we can do. */
1847 if (new_bit_length > resolved_type_bit_length)
1848 resolved_type_bit_length = new_bit_length;
1851 TYPE_LENGTH (resolved_type)
1852 = (resolved_type_bit_length + TARGET_CHAR_BIT - 1) / TARGET_CHAR_BIT;
1854 return resolved_type;
1857 /* Worker for resolved_dynamic_type. */
1859 static struct type *
1860 resolve_dynamic_type_internal (struct type *type, CORE_ADDR addr,
1863 struct type *real_type = check_typedef (type);
1864 struct type *resolved_type = type;
1865 const struct dynamic_prop *prop;
1868 if (!is_dynamic_type_internal (real_type, top_level))
1871 switch (TYPE_CODE (type))
1873 case TYPE_CODE_TYPEDEF:
1874 resolved_type = copy_type (type);
1875 TYPE_TARGET_TYPE (resolved_type)
1876 = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (type), addr,
1882 CORE_ADDR target_addr = read_memory_typed_address (addr, type);
1884 resolved_type = copy_type (type);
1885 TYPE_TARGET_TYPE (resolved_type)
1886 = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (type),
1887 target_addr, top_level);
1891 case TYPE_CODE_ARRAY:
1892 resolved_type = resolve_dynamic_array (type, addr);
1895 case TYPE_CODE_RANGE:
1896 resolved_type = resolve_dynamic_range (type, addr);
1899 case TYPE_CODE_UNION:
1900 resolved_type = resolve_dynamic_union (type, addr);
1903 case TYPE_CODE_STRUCT:
1904 resolved_type = resolve_dynamic_struct (type, addr);
1908 /* Resolve data_location attribute. */
1909 prop = TYPE_DATA_LOCATION (resolved_type);
1910 if (dwarf2_evaluate_property (prop, addr, &value))
1912 TYPE_DATA_LOCATION_ADDR (resolved_type) = value;
1913 TYPE_DATA_LOCATION_KIND (resolved_type) = PROP_CONST;
1916 TYPE_DATA_LOCATION (resolved_type) = NULL;
1918 return resolved_type;
1921 /* See gdbtypes.h */
1924 resolve_dynamic_type (struct type *type, CORE_ADDR addr)
1926 return resolve_dynamic_type_internal (type, addr, 1);
1929 /* Find the real type of TYPE. This function returns the real type,
1930 after removing all layers of typedefs, and completing opaque or stub
1931 types. Completion changes the TYPE argument, but stripping of
1934 Instance flags (e.g. const/volatile) are preserved as typedefs are
1935 stripped. If necessary a new qualified form of the underlying type
1938 NOTE: This will return a typedef if TYPE_TARGET_TYPE for the typedef has
1939 not been computed and we're either in the middle of reading symbols, or
1940 there was no name for the typedef in the debug info.
1942 NOTE: Lookup of opaque types can throw errors for invalid symbol files.
1943 QUITs in the symbol reading code can also throw.
1944 Thus this function can throw an exception.
1946 If TYPE is a TYPE_CODE_TYPEDEF, its length is updated to the length of
1949 If this is a stubbed struct (i.e. declared as struct foo *), see if
1950 we can find a full definition in some other file. If so, copy this
1951 definition, so we can use it in future. There used to be a comment
1952 (but not any code) that if we don't find a full definition, we'd
1953 set a flag so we don't spend time in the future checking the same
1954 type. That would be a mistake, though--we might load in more
1955 symbols which contain a full definition for the type. */
1958 check_typedef (struct type *type)
1960 struct type *orig_type = type;
1961 /* While we're removing typedefs, we don't want to lose qualifiers.
1962 E.g., const/volatile. */
1963 int instance_flags = TYPE_INSTANCE_FLAGS (type);
1967 while (TYPE_CODE (type) == TYPE_CODE_TYPEDEF)
1969 if (!TYPE_TARGET_TYPE (type))
1974 /* It is dangerous to call lookup_symbol if we are currently
1975 reading a symtab. Infinite recursion is one danger. */
1976 if (currently_reading_symtab)
1977 return make_qualified_type (type, instance_flags, NULL);
1979 name = type_name_no_tag (type);
1980 /* FIXME: shouldn't we separately check the TYPE_NAME and
1981 the TYPE_TAG_NAME, and look in STRUCT_DOMAIN and/or
1982 VAR_DOMAIN as appropriate? (this code was written before
1983 TYPE_NAME and TYPE_TAG_NAME were separate). */
1986 stub_noname_complaint ();
1987 return make_qualified_type (type, instance_flags, NULL);
1989 sym = lookup_symbol (name, 0, STRUCT_DOMAIN, 0);
1991 TYPE_TARGET_TYPE (type) = SYMBOL_TYPE (sym);
1992 else /* TYPE_CODE_UNDEF */
1993 TYPE_TARGET_TYPE (type) = alloc_type_arch (get_type_arch (type));
1995 type = TYPE_TARGET_TYPE (type);
1997 /* Preserve the instance flags as we traverse down the typedef chain.
1999 Handling address spaces/classes is nasty, what do we do if there's a
2001 E.g., what if an outer typedef marks the type as class_1 and an inner
2002 typedef marks the type as class_2?
2003 This is the wrong place to do such error checking. We leave it to
2004 the code that created the typedef in the first place to flag the
2005 error. We just pick the outer address space (akin to letting the
2006 outer cast in a chain of casting win), instead of assuming
2007 "it can't happen". */
2009 const int ALL_SPACES = (TYPE_INSTANCE_FLAG_CODE_SPACE
2010 | TYPE_INSTANCE_FLAG_DATA_SPACE);
2011 const int ALL_CLASSES = TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL;
2012 int new_instance_flags = TYPE_INSTANCE_FLAGS (type);
2014 /* Treat code vs data spaces and address classes separately. */
2015 if ((instance_flags & ALL_SPACES) != 0)
2016 new_instance_flags &= ~ALL_SPACES;
2017 if ((instance_flags & ALL_CLASSES) != 0)
2018 new_instance_flags &= ~ALL_CLASSES;
2020 instance_flags |= new_instance_flags;
2024 /* If this is a struct/class/union with no fields, then check
2025 whether a full definition exists somewhere else. This is for
2026 systems where a type definition with no fields is issued for such
2027 types, instead of identifying them as stub types in the first
2030 if (TYPE_IS_OPAQUE (type)
2031 && opaque_type_resolution
2032 && !currently_reading_symtab)
2034 const char *name = type_name_no_tag (type);
2035 struct type *newtype;
2039 stub_noname_complaint ();
2040 return make_qualified_type (type, instance_flags, NULL);
2042 newtype = lookup_transparent_type (name);
2046 /* If the resolved type and the stub are in the same
2047 objfile, then replace the stub type with the real deal.
2048 But if they're in separate objfiles, leave the stub
2049 alone; we'll just look up the transparent type every time
2050 we call check_typedef. We can't create pointers between
2051 types allocated to different objfiles, since they may
2052 have different lifetimes. Trying to copy NEWTYPE over to
2053 TYPE's objfile is pointless, too, since you'll have to
2054 move over any other types NEWTYPE refers to, which could
2055 be an unbounded amount of stuff. */
2056 if (TYPE_OBJFILE (newtype) == TYPE_OBJFILE (type))
2057 type = make_qualified_type (newtype,
2058 TYPE_INSTANCE_FLAGS (type),
2064 /* Otherwise, rely on the stub flag being set for opaque/stubbed
2066 else if (TYPE_STUB (type) && !currently_reading_symtab)
2068 const char *name = type_name_no_tag (type);
2069 /* FIXME: shouldn't we separately check the TYPE_NAME and the
2070 TYPE_TAG_NAME, and look in STRUCT_DOMAIN and/or VAR_DOMAIN
2071 as appropriate? (this code was written before TYPE_NAME and
2072 TYPE_TAG_NAME were separate). */
2077 stub_noname_complaint ();
2078 return make_qualified_type (type, instance_flags, NULL);
2080 sym = lookup_symbol (name, 0, STRUCT_DOMAIN, 0);
2083 /* Same as above for opaque types, we can replace the stub
2084 with the complete type only if they are in the same
2086 if (TYPE_OBJFILE (SYMBOL_TYPE(sym)) == TYPE_OBJFILE (type))
2087 type = make_qualified_type (SYMBOL_TYPE (sym),
2088 TYPE_INSTANCE_FLAGS (type),
2091 type = SYMBOL_TYPE (sym);
2095 if (TYPE_TARGET_STUB (type))
2097 struct type *range_type;
2098 struct type *target_type = check_typedef (TYPE_TARGET_TYPE (type));
2100 if (TYPE_STUB (target_type) || TYPE_TARGET_STUB (target_type))
2102 /* Nothing we can do. */
2104 else if (TYPE_CODE (type) == TYPE_CODE_RANGE)
2106 TYPE_LENGTH (type) = TYPE_LENGTH (target_type);
2107 TYPE_TARGET_STUB (type) = 0;
2111 type = make_qualified_type (type, instance_flags, NULL);
2113 /* Cache TYPE_LENGTH for future use. */
2114 TYPE_LENGTH (orig_type) = TYPE_LENGTH (type);
2119 /* Parse a type expression in the string [P..P+LENGTH). If an error
2120 occurs, silently return a void type. */
2122 static struct type *
2123 safe_parse_type (struct gdbarch *gdbarch, char *p, int length)
2125 struct ui_file *saved_gdb_stderr;
2126 struct type *type = NULL; /* Initialize to keep gcc happy. */
2127 volatile struct gdb_exception except;
2129 /* Suppress error messages. */
2130 saved_gdb_stderr = gdb_stderr;
2131 gdb_stderr = ui_file_new ();
2133 /* Call parse_and_eval_type() without fear of longjmp()s. */
2134 TRY_CATCH (except, RETURN_MASK_ERROR)
2136 type = parse_and_eval_type (p, length);
2139 if (except.reason < 0)
2140 type = builtin_type (gdbarch)->builtin_void;
2142 /* Stop suppressing error messages. */
2143 ui_file_delete (gdb_stderr);
2144 gdb_stderr = saved_gdb_stderr;
2149 /* Ugly hack to convert method stubs into method types.
2151 He ain't kiddin'. This demangles the name of the method into a
2152 string including argument types, parses out each argument type,
2153 generates a string casting a zero to that type, evaluates the
2154 string, and stuffs the resulting type into an argtype vector!!!
2155 Then it knows the type of the whole function (including argument
2156 types for overloading), which info used to be in the stab's but was
2157 removed to hack back the space required for them. */
2160 check_stub_method (struct type *type, int method_id, int signature_id)
2162 struct gdbarch *gdbarch = get_type_arch (type);
2164 char *mangled_name = gdb_mangle_name (type, method_id, signature_id);
2165 char *demangled_name = gdb_demangle (mangled_name,
2166 DMGL_PARAMS | DMGL_ANSI);
2167 char *argtypetext, *p;
2168 int depth = 0, argcount = 1;
2169 struct field *argtypes;
2172 /* Make sure we got back a function string that we can use. */
2174 p = strchr (demangled_name, '(');
2178 if (demangled_name == NULL || p == NULL)
2179 error (_("Internal: Cannot demangle mangled name `%s'."),
2182 /* Now, read in the parameters that define this type. */
2187 if (*p == '(' || *p == '<')
2191 else if (*p == ')' || *p == '>')
2195 else if (*p == ',' && depth == 0)
2203 /* If we read one argument and it was ``void'', don't count it. */
2204 if (strncmp (argtypetext, "(void)", 6) == 0)
2207 /* We need one extra slot, for the THIS pointer. */
2209 argtypes = (struct field *)
2210 TYPE_ALLOC (type, (argcount + 1) * sizeof (struct field));
2213 /* Add THIS pointer for non-static methods. */
2214 f = TYPE_FN_FIELDLIST1 (type, method_id);
2215 if (TYPE_FN_FIELD_STATIC_P (f, signature_id))
2219 argtypes[0].type = lookup_pointer_type (type);
2223 if (*p != ')') /* () means no args, skip while. */
2228 if (depth <= 0 && (*p == ',' || *p == ')'))
2230 /* Avoid parsing of ellipsis, they will be handled below.
2231 Also avoid ``void'' as above. */
2232 if (strncmp (argtypetext, "...", p - argtypetext) != 0
2233 && strncmp (argtypetext, "void", p - argtypetext) != 0)
2235 argtypes[argcount].type =
2236 safe_parse_type (gdbarch, argtypetext, p - argtypetext);
2239 argtypetext = p + 1;
2242 if (*p == '(' || *p == '<')
2246 else if (*p == ')' || *p == '>')
2255 TYPE_FN_FIELD_PHYSNAME (f, signature_id) = mangled_name;
2257 /* Now update the old "stub" type into a real type. */
2258 mtype = TYPE_FN_FIELD_TYPE (f, signature_id);
2259 TYPE_DOMAIN_TYPE (mtype) = type;
2260 TYPE_FIELDS (mtype) = argtypes;
2261 TYPE_NFIELDS (mtype) = argcount;
2262 TYPE_STUB (mtype) = 0;
2263 TYPE_FN_FIELD_STUB (f, signature_id) = 0;
2265 TYPE_VARARGS (mtype) = 1;
2267 xfree (demangled_name);
2270 /* This is the external interface to check_stub_method, above. This
2271 function unstubs all of the signatures for TYPE's METHOD_ID method
2272 name. After calling this function TYPE_FN_FIELD_STUB will be
2273 cleared for each signature and TYPE_FN_FIELDLIST_NAME will be
2276 This function unfortunately can not die until stabs do. */
2279 check_stub_method_group (struct type *type, int method_id)
2281 int len = TYPE_FN_FIELDLIST_LENGTH (type, method_id);
2282 struct fn_field *f = TYPE_FN_FIELDLIST1 (type, method_id);
2283 int j, found_stub = 0;
2285 for (j = 0; j < len; j++)
2286 if (TYPE_FN_FIELD_STUB (f, j))
2289 check_stub_method (type, method_id, j);
2292 /* GNU v3 methods with incorrect names were corrected when we read
2293 in type information, because it was cheaper to do it then. The
2294 only GNU v2 methods with incorrect method names are operators and
2295 destructors; destructors were also corrected when we read in type
2298 Therefore the only thing we need to handle here are v2 operator
2300 if (found_stub && strncmp (TYPE_FN_FIELD_PHYSNAME (f, 0), "_Z", 2) != 0)
2303 char dem_opname[256];
2305 ret = cplus_demangle_opname (TYPE_FN_FIELDLIST_NAME (type,
2307 dem_opname, DMGL_ANSI);
2309 ret = cplus_demangle_opname (TYPE_FN_FIELDLIST_NAME (type,
2313 TYPE_FN_FIELDLIST_NAME (type, method_id) = xstrdup (dem_opname);
2317 /* Ensure it is in .rodata (if available) by workarounding GCC PR 44690. */
2318 const struct cplus_struct_type cplus_struct_default = { };
2321 allocate_cplus_struct_type (struct type *type)
2323 if (HAVE_CPLUS_STRUCT (type))
2324 /* Structure was already allocated. Nothing more to do. */
2327 TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_CPLUS_STUFF;
2328 TYPE_RAW_CPLUS_SPECIFIC (type) = (struct cplus_struct_type *)
2329 TYPE_ALLOC (type, sizeof (struct cplus_struct_type));
2330 *(TYPE_RAW_CPLUS_SPECIFIC (type)) = cplus_struct_default;
2333 const struct gnat_aux_type gnat_aux_default =
2336 /* Set the TYPE's type-specific kind to TYPE_SPECIFIC_GNAT_STUFF,
2337 and allocate the associated gnat-specific data. The gnat-specific
2338 data is also initialized to gnat_aux_default. */
2341 allocate_gnat_aux_type (struct type *type)
2343 TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_GNAT_STUFF;
2344 TYPE_GNAT_SPECIFIC (type) = (struct gnat_aux_type *)
2345 TYPE_ALLOC (type, sizeof (struct gnat_aux_type));
2346 *(TYPE_GNAT_SPECIFIC (type)) = gnat_aux_default;
2349 /* Helper function to initialize the standard scalar types.
2351 If NAME is non-NULL, then it is used to initialize the type name.
2352 Note that NAME is not copied; it is required to have a lifetime at
2353 least as long as OBJFILE. */
2356 init_type (enum type_code code, int length, int flags,
2357 const char *name, struct objfile *objfile)
2361 type = alloc_type (objfile);
2362 TYPE_CODE (type) = code;
2363 TYPE_LENGTH (type) = length;
2365 gdb_assert (!(flags & (TYPE_FLAG_MIN - 1)));
2366 if (flags & TYPE_FLAG_UNSIGNED)
2367 TYPE_UNSIGNED (type) = 1;
2368 if (flags & TYPE_FLAG_NOSIGN)
2369 TYPE_NOSIGN (type) = 1;
2370 if (flags & TYPE_FLAG_STUB)
2371 TYPE_STUB (type) = 1;
2372 if (flags & TYPE_FLAG_TARGET_STUB)
2373 TYPE_TARGET_STUB (type) = 1;
2374 if (flags & TYPE_FLAG_STATIC)
2375 TYPE_STATIC (type) = 1;
2376 if (flags & TYPE_FLAG_PROTOTYPED)
2377 TYPE_PROTOTYPED (type) = 1;
2378 if (flags & TYPE_FLAG_INCOMPLETE)
2379 TYPE_INCOMPLETE (type) = 1;
2380 if (flags & TYPE_FLAG_VARARGS)
2381 TYPE_VARARGS (type) = 1;
2382 if (flags & TYPE_FLAG_VECTOR)
2383 TYPE_VECTOR (type) = 1;
2384 if (flags & TYPE_FLAG_STUB_SUPPORTED)
2385 TYPE_STUB_SUPPORTED (type) = 1;
2386 if (flags & TYPE_FLAG_FIXED_INSTANCE)
2387 TYPE_FIXED_INSTANCE (type) = 1;
2388 if (flags & TYPE_FLAG_GNU_IFUNC)
2389 TYPE_GNU_IFUNC (type) = 1;
2391 TYPE_NAME (type) = name;
2395 if (name && strcmp (name, "char") == 0)
2396 TYPE_NOSIGN (type) = 1;
2400 case TYPE_CODE_STRUCT:
2401 case TYPE_CODE_UNION:
2402 case TYPE_CODE_NAMESPACE:
2403 INIT_CPLUS_SPECIFIC (type);
2406 TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_FLOATFORMAT;
2408 case TYPE_CODE_FUNC:
2409 INIT_FUNC_SPECIFIC (type);
2415 /* Queries on types. */
2418 can_dereference (struct type *t)
2420 /* FIXME: Should we return true for references as well as
2425 && TYPE_CODE (t) == TYPE_CODE_PTR
2426 && TYPE_CODE (TYPE_TARGET_TYPE (t)) != TYPE_CODE_VOID);
2430 is_integral_type (struct type *t)
2435 && ((TYPE_CODE (t) == TYPE_CODE_INT)
2436 || (TYPE_CODE (t) == TYPE_CODE_ENUM)
2437 || (TYPE_CODE (t) == TYPE_CODE_FLAGS)
2438 || (TYPE_CODE (t) == TYPE_CODE_CHAR)
2439 || (TYPE_CODE (t) == TYPE_CODE_RANGE)
2440 || (TYPE_CODE (t) == TYPE_CODE_BOOL)));
2443 /* Return true if TYPE is scalar. */
2446 is_scalar_type (struct type *type)
2448 CHECK_TYPEDEF (type);
2450 switch (TYPE_CODE (type))
2452 case TYPE_CODE_ARRAY:
2453 case TYPE_CODE_STRUCT:
2454 case TYPE_CODE_UNION:
2456 case TYPE_CODE_STRING:
2463 /* Return true if T is scalar, or a composite type which in practice has
2464 the memory layout of a scalar type. E.g., an array or struct with only
2465 one scalar element inside it, or a union with only scalar elements. */
2468 is_scalar_type_recursive (struct type *t)
2472 if (is_scalar_type (t))
2474 /* Are we dealing with an array or string of known dimensions? */
2475 else if ((TYPE_CODE (t) == TYPE_CODE_ARRAY
2476 || TYPE_CODE (t) == TYPE_CODE_STRING) && TYPE_NFIELDS (t) == 1
2477 && TYPE_CODE (TYPE_INDEX_TYPE (t)) == TYPE_CODE_RANGE)
2479 LONGEST low_bound, high_bound;
2480 struct type *elt_type = check_typedef (TYPE_TARGET_TYPE (t));
2482 get_discrete_bounds (TYPE_INDEX_TYPE (t), &low_bound, &high_bound);
2484 return high_bound == low_bound && is_scalar_type_recursive (elt_type);
2486 /* Are we dealing with a struct with one element? */
2487 else if (TYPE_CODE (t) == TYPE_CODE_STRUCT && TYPE_NFIELDS (t) == 1)
2488 return is_scalar_type_recursive (TYPE_FIELD_TYPE (t, 0));
2489 else if (TYPE_CODE (t) == TYPE_CODE_UNION)
2491 int i, n = TYPE_NFIELDS (t);
2493 /* If all elements of the union are scalar, then the union is scalar. */
2494 for (i = 0; i < n; i++)
2495 if (!is_scalar_type_recursive (TYPE_FIELD_TYPE (t, i)))
2504 /* A helper function which returns true if types A and B represent the
2505 "same" class type. This is true if the types have the same main
2506 type, or the same name. */
2509 class_types_same_p (const struct type *a, const struct type *b)
2511 return (TYPE_MAIN_TYPE (a) == TYPE_MAIN_TYPE (b)
2512 || (TYPE_NAME (a) && TYPE_NAME (b)
2513 && !strcmp (TYPE_NAME (a), TYPE_NAME (b))));
2516 /* If BASE is an ancestor of DCLASS return the distance between them.
2517 otherwise return -1;
2521 class B: public A {};
2522 class C: public B {};
2525 distance_to_ancestor (A, A, 0) = 0
2526 distance_to_ancestor (A, B, 0) = 1
2527 distance_to_ancestor (A, C, 0) = 2
2528 distance_to_ancestor (A, D, 0) = 3
2530 If PUBLIC is 1 then only public ancestors are considered,
2531 and the function returns the distance only if BASE is a public ancestor
2535 distance_to_ancestor (A, D, 1) = -1. */
2538 distance_to_ancestor (struct type *base, struct type *dclass, int public)
2543 CHECK_TYPEDEF (base);
2544 CHECK_TYPEDEF (dclass);
2546 if (class_types_same_p (base, dclass))
2549 for (i = 0; i < TYPE_N_BASECLASSES (dclass); i++)
2551 if (public && ! BASETYPE_VIA_PUBLIC (dclass, i))
2554 d = distance_to_ancestor (base, TYPE_BASECLASS (dclass, i), public);
2562 /* Check whether BASE is an ancestor or base class or DCLASS
2563 Return 1 if so, and 0 if not.
2564 Note: If BASE and DCLASS are of the same type, this function
2565 will return 1. So for some class A, is_ancestor (A, A) will
2569 is_ancestor (struct type *base, struct type *dclass)
2571 return distance_to_ancestor (base, dclass, 0) >= 0;
2574 /* Like is_ancestor, but only returns true when BASE is a public
2575 ancestor of DCLASS. */
2578 is_public_ancestor (struct type *base, struct type *dclass)
2580 return distance_to_ancestor (base, dclass, 1) >= 0;
2583 /* A helper function for is_unique_ancestor. */
2586 is_unique_ancestor_worker (struct type *base, struct type *dclass,
2588 const gdb_byte *valaddr, int embedded_offset,
2589 CORE_ADDR address, struct value *val)
2593 CHECK_TYPEDEF (base);
2594 CHECK_TYPEDEF (dclass);
2596 for (i = 0; i < TYPE_N_BASECLASSES (dclass) && count < 2; ++i)
2601 iter = check_typedef (TYPE_BASECLASS (dclass, i));
2603 this_offset = baseclass_offset (dclass, i, valaddr, embedded_offset,
2606 if (class_types_same_p (base, iter))
2608 /* If this is the first subclass, set *OFFSET and set count
2609 to 1. Otherwise, if this is at the same offset as
2610 previous instances, do nothing. Otherwise, increment
2614 *offset = this_offset;
2617 else if (this_offset == *offset)
2625 count += is_unique_ancestor_worker (base, iter, offset,
2627 embedded_offset + this_offset,
2634 /* Like is_ancestor, but only returns true if BASE is a unique base
2635 class of the type of VAL. */
2638 is_unique_ancestor (struct type *base, struct value *val)
2642 return is_unique_ancestor_worker (base, value_type (val), &offset,
2643 value_contents_for_printing (val),
2644 value_embedded_offset (val),
2645 value_address (val), val) == 1;
2649 /* Overload resolution. */
2651 /* Return the sum of the rank of A with the rank of B. */
2654 sum_ranks (struct rank a, struct rank b)
2657 c.rank = a.rank + b.rank;
2658 c.subrank = a.subrank + b.subrank;
2662 /* Compare rank A and B and return:
2664 1 if a is better than b
2665 -1 if b is better than a. */
2668 compare_ranks (struct rank a, struct rank b)
2670 if (a.rank == b.rank)
2672 if (a.subrank == b.subrank)
2674 if (a.subrank < b.subrank)
2676 if (a.subrank > b.subrank)
2680 if (a.rank < b.rank)
2683 /* a.rank > b.rank */
2687 /* Functions for overload resolution begin here. */
2689 /* Compare two badness vectors A and B and return the result.
2690 0 => A and B are identical
2691 1 => A and B are incomparable
2692 2 => A is better than B
2693 3 => A is worse than B */
2696 compare_badness (struct badness_vector *a, struct badness_vector *b)
2700 short found_pos = 0; /* any positives in c? */
2701 short found_neg = 0; /* any negatives in c? */
2703 /* differing lengths => incomparable */
2704 if (a->length != b->length)
2707 /* Subtract b from a */
2708 for (i = 0; i < a->length; i++)
2710 tmp = compare_ranks (b->rank[i], a->rank[i]);
2720 return 1; /* incomparable */
2722 return 3; /* A > B */
2728 return 2; /* A < B */
2730 return 0; /* A == B */
2734 /* Rank a function by comparing its parameter types (PARMS, length
2735 NPARMS), to the types of an argument list (ARGS, length NARGS).
2736 Return a pointer to a badness vector. This has NARGS + 1
2739 struct badness_vector *
2740 rank_function (struct type **parms, int nparms,
2741 struct value **args, int nargs)
2744 struct badness_vector *bv;
2745 int min_len = nparms < nargs ? nparms : nargs;
2747 bv = xmalloc (sizeof (struct badness_vector));
2748 bv->length = nargs + 1; /* add 1 for the length-match rank. */
2749 bv->rank = XNEWVEC (struct rank, nargs + 1);
2751 /* First compare the lengths of the supplied lists.
2752 If there is a mismatch, set it to a high value. */
2754 /* pai/1997-06-03 FIXME: when we have debug info about default
2755 arguments and ellipsis parameter lists, we should consider those
2756 and rank the length-match more finely. */
2758 LENGTH_MATCH (bv) = (nargs != nparms)
2759 ? LENGTH_MISMATCH_BADNESS
2760 : EXACT_MATCH_BADNESS;
2762 /* Now rank all the parameters of the candidate function. */
2763 for (i = 1; i <= min_len; i++)
2764 bv->rank[i] = rank_one_type (parms[i - 1], value_type (args[i - 1]),
2767 /* If more arguments than parameters, add dummy entries. */
2768 for (i = min_len + 1; i <= nargs; i++)
2769 bv->rank[i] = TOO_FEW_PARAMS_BADNESS;
2774 /* Compare the names of two integer types, assuming that any sign
2775 qualifiers have been checked already. We do it this way because
2776 there may be an "int" in the name of one of the types. */
2779 integer_types_same_name_p (const char *first, const char *second)
2781 int first_p, second_p;
2783 /* If both are shorts, return 1; if neither is a short, keep
2785 first_p = (strstr (first, "short") != NULL);
2786 second_p = (strstr (second, "short") != NULL);
2787 if (first_p && second_p)
2789 if (first_p || second_p)
2792 /* Likewise for long. */
2793 first_p = (strstr (first, "long") != NULL);
2794 second_p = (strstr (second, "long") != NULL);
2795 if (first_p && second_p)
2797 if (first_p || second_p)
2800 /* Likewise for char. */
2801 first_p = (strstr (first, "char") != NULL);
2802 second_p = (strstr (second, "char") != NULL);
2803 if (first_p && second_p)
2805 if (first_p || second_p)
2808 /* They must both be ints. */
2812 /* Compares type A to type B returns 1 if the represent the same type
2816 types_equal (struct type *a, struct type *b)
2818 /* Identical type pointers. */
2819 /* However, this still doesn't catch all cases of same type for b
2820 and a. The reason is that builtin types are different from
2821 the same ones constructed from the object. */
2825 /* Resolve typedefs */
2826 if (TYPE_CODE (a) == TYPE_CODE_TYPEDEF)
2827 a = check_typedef (a);
2828 if (TYPE_CODE (b) == TYPE_CODE_TYPEDEF)
2829 b = check_typedef (b);
2831 /* If after resolving typedefs a and b are not of the same type
2832 code then they are not equal. */
2833 if (TYPE_CODE (a) != TYPE_CODE (b))
2836 /* If a and b are both pointers types or both reference types then
2837 they are equal of the same type iff the objects they refer to are
2838 of the same type. */
2839 if (TYPE_CODE (a) == TYPE_CODE_PTR
2840 || TYPE_CODE (a) == TYPE_CODE_REF)
2841 return types_equal (TYPE_TARGET_TYPE (a),
2842 TYPE_TARGET_TYPE (b));
2844 /* Well, damnit, if the names are exactly the same, I'll say they
2845 are exactly the same. This happens when we generate method
2846 stubs. The types won't point to the same address, but they
2847 really are the same. */
2849 if (TYPE_NAME (a) && TYPE_NAME (b)
2850 && strcmp (TYPE_NAME (a), TYPE_NAME (b)) == 0)
2853 /* Check if identical after resolving typedefs. */
2857 /* Two function types are equal if their argument and return types
2859 if (TYPE_CODE (a) == TYPE_CODE_FUNC)
2863 if (TYPE_NFIELDS (a) != TYPE_NFIELDS (b))
2866 if (!types_equal (TYPE_TARGET_TYPE (a), TYPE_TARGET_TYPE (b)))
2869 for (i = 0; i < TYPE_NFIELDS (a); ++i)
2870 if (!types_equal (TYPE_FIELD_TYPE (a, i), TYPE_FIELD_TYPE (b, i)))
2879 /* Deep comparison of types. */
2881 /* An entry in the type-equality bcache. */
2883 typedef struct type_equality_entry
2885 struct type *type1, *type2;
2886 } type_equality_entry_d;
2888 DEF_VEC_O (type_equality_entry_d);
2890 /* A helper function to compare two strings. Returns 1 if they are
2891 the same, 0 otherwise. Handles NULLs properly. */
2894 compare_maybe_null_strings (const char *s, const char *t)
2896 if (s == NULL && t != NULL)
2898 else if (s != NULL && t == NULL)
2900 else if (s == NULL && t== NULL)
2902 return strcmp (s, t) == 0;
2905 /* A helper function for check_types_worklist that checks two types for
2906 "deep" equality. Returns non-zero if the types are considered the
2907 same, zero otherwise. */
2910 check_types_equal (struct type *type1, struct type *type2,
2911 VEC (type_equality_entry_d) **worklist)
2913 CHECK_TYPEDEF (type1);
2914 CHECK_TYPEDEF (type2);
2919 if (TYPE_CODE (type1) != TYPE_CODE (type2)
2920 || TYPE_LENGTH (type1) != TYPE_LENGTH (type2)
2921 || TYPE_UNSIGNED (type1) != TYPE_UNSIGNED (type2)
2922 || TYPE_NOSIGN (type1) != TYPE_NOSIGN (type2)
2923 || TYPE_VARARGS (type1) != TYPE_VARARGS (type2)
2924 || TYPE_VECTOR (type1) != TYPE_VECTOR (type2)
2925 || TYPE_NOTTEXT (type1) != TYPE_NOTTEXT (type2)
2926 || TYPE_INSTANCE_FLAGS (type1) != TYPE_INSTANCE_FLAGS (type2)
2927 || TYPE_NFIELDS (type1) != TYPE_NFIELDS (type2))
2930 if (!compare_maybe_null_strings (TYPE_TAG_NAME (type1),
2931 TYPE_TAG_NAME (type2)))
2933 if (!compare_maybe_null_strings (TYPE_NAME (type1), TYPE_NAME (type2)))
2936 if (TYPE_CODE (type1) == TYPE_CODE_RANGE)
2938 if (memcmp (TYPE_RANGE_DATA (type1), TYPE_RANGE_DATA (type2),
2939 sizeof (*TYPE_RANGE_DATA (type1))) != 0)
2946 for (i = 0; i < TYPE_NFIELDS (type1); ++i)
2948 const struct field *field1 = &TYPE_FIELD (type1, i);
2949 const struct field *field2 = &TYPE_FIELD (type2, i);
2950 struct type_equality_entry entry;
2952 if (FIELD_ARTIFICIAL (*field1) != FIELD_ARTIFICIAL (*field2)
2953 || FIELD_BITSIZE (*field1) != FIELD_BITSIZE (*field2)
2954 || FIELD_LOC_KIND (*field1) != FIELD_LOC_KIND (*field2))
2956 if (!compare_maybe_null_strings (FIELD_NAME (*field1),
2957 FIELD_NAME (*field2)))
2959 switch (FIELD_LOC_KIND (*field1))
2961 case FIELD_LOC_KIND_BITPOS:
2962 if (FIELD_BITPOS (*field1) != FIELD_BITPOS (*field2))
2965 case FIELD_LOC_KIND_ENUMVAL:
2966 if (FIELD_ENUMVAL (*field1) != FIELD_ENUMVAL (*field2))
2969 case FIELD_LOC_KIND_PHYSADDR:
2970 if (FIELD_STATIC_PHYSADDR (*field1)
2971 != FIELD_STATIC_PHYSADDR (*field2))
2974 case FIELD_LOC_KIND_PHYSNAME:
2975 if (!compare_maybe_null_strings (FIELD_STATIC_PHYSNAME (*field1),
2976 FIELD_STATIC_PHYSNAME (*field2)))
2979 case FIELD_LOC_KIND_DWARF_BLOCK:
2981 struct dwarf2_locexpr_baton *block1, *block2;
2983 block1 = FIELD_DWARF_BLOCK (*field1);
2984 block2 = FIELD_DWARF_BLOCK (*field2);
2985 if (block1->per_cu != block2->per_cu
2986 || block1->size != block2->size
2987 || memcmp (block1->data, block2->data, block1->size) != 0)
2992 internal_error (__FILE__, __LINE__, _("Unsupported field kind "
2993 "%d by check_types_equal"),
2994 FIELD_LOC_KIND (*field1));
2997 entry.type1 = FIELD_TYPE (*field1);
2998 entry.type2 = FIELD_TYPE (*field2);
2999 VEC_safe_push (type_equality_entry_d, *worklist, &entry);
3003 if (TYPE_TARGET_TYPE (type1) != NULL)
3005 struct type_equality_entry entry;
3007 if (TYPE_TARGET_TYPE (type2) == NULL)
3010 entry.type1 = TYPE_TARGET_TYPE (type1);
3011 entry.type2 = TYPE_TARGET_TYPE (type2);
3012 VEC_safe_push (type_equality_entry_d, *worklist, &entry);
3014 else if (TYPE_TARGET_TYPE (type2) != NULL)
3020 /* Check types on a worklist for equality. Returns zero if any pair
3021 is not equal, non-zero if they are all considered equal. */
3024 check_types_worklist (VEC (type_equality_entry_d) **worklist,
3025 struct bcache *cache)
3027 while (!VEC_empty (type_equality_entry_d, *worklist))
3029 struct type_equality_entry entry;
3032 entry = *VEC_last (type_equality_entry_d, *worklist);
3033 VEC_pop (type_equality_entry_d, *worklist);
3035 /* If the type pair has already been visited, we know it is
3037 bcache_full (&entry, sizeof (entry), cache, &added);
3041 if (check_types_equal (entry.type1, entry.type2, worklist) == 0)
3048 /* Return non-zero if types TYPE1 and TYPE2 are equal, as determined by a
3049 "deep comparison". Otherwise return zero. */
3052 types_deeply_equal (struct type *type1, struct type *type2)
3054 volatile struct gdb_exception except;
3056 struct bcache *cache;
3057 VEC (type_equality_entry_d) *worklist = NULL;
3058 struct type_equality_entry entry;
3060 gdb_assert (type1 != NULL && type2 != NULL);
3062 /* Early exit for the simple case. */
3066 cache = bcache_xmalloc (NULL, NULL);
3068 entry.type1 = type1;
3069 entry.type2 = type2;
3070 VEC_safe_push (type_equality_entry_d, worklist, &entry);
3072 TRY_CATCH (except, RETURN_MASK_ALL)
3074 result = check_types_worklist (&worklist, cache);
3076 /* check_types_worklist calls several nested helper functions,
3077 some of which can raise a GDB Exception, so we just check
3078 and rethrow here. If there is a GDB exception, a comparison
3079 is not capable (or trusted), so exit. */
3080 bcache_xfree (cache);
3081 VEC_free (type_equality_entry_d, worklist);
3082 /* Rethrow if there was a problem. */
3083 if (except.reason < 0)
3084 throw_exception (except);
3089 /* Compare one type (PARM) for compatibility with another (ARG).
3090 * PARM is intended to be the parameter type of a function; and
3091 * ARG is the supplied argument's type. This function tests if
3092 * the latter can be converted to the former.
3093 * VALUE is the argument's value or NULL if none (or called recursively)
3095 * Return 0 if they are identical types;
3096 * Otherwise, return an integer which corresponds to how compatible
3097 * PARM is to ARG. The higher the return value, the worse the match.
3098 * Generally the "bad" conversions are all uniformly assigned a 100. */
3101 rank_one_type (struct type *parm, struct type *arg, struct value *value)
3103 struct rank rank = {0,0};
3105 if (types_equal (parm, arg))
3106 return EXACT_MATCH_BADNESS;
3108 /* Resolve typedefs */
3109 if (TYPE_CODE (parm) == TYPE_CODE_TYPEDEF)
3110 parm = check_typedef (parm);
3111 if (TYPE_CODE (arg) == TYPE_CODE_TYPEDEF)
3112 arg = check_typedef (arg);
3114 /* See through references, since we can almost make non-references
3116 if (TYPE_CODE (arg) == TYPE_CODE_REF)
3117 return (sum_ranks (rank_one_type (parm, TYPE_TARGET_TYPE (arg), NULL),
3118 REFERENCE_CONVERSION_BADNESS));
3119 if (TYPE_CODE (parm) == TYPE_CODE_REF)
3120 return (sum_ranks (rank_one_type (TYPE_TARGET_TYPE (parm), arg, NULL),
3121 REFERENCE_CONVERSION_BADNESS));
3123 /* Debugging only. */
3124 fprintf_filtered (gdb_stderr,
3125 "------ Arg is %s [%d], parm is %s [%d]\n",
3126 TYPE_NAME (arg), TYPE_CODE (arg),
3127 TYPE_NAME (parm), TYPE_CODE (parm));
3129 /* x -> y means arg of type x being supplied for parameter of type y. */
3131 switch (TYPE_CODE (parm))
3134 switch (TYPE_CODE (arg))
3138 /* Allowed pointer conversions are:
3139 (a) pointer to void-pointer conversion. */
3140 if (TYPE_CODE (TYPE_TARGET_TYPE (parm)) == TYPE_CODE_VOID)
3141 return VOID_PTR_CONVERSION_BADNESS;
3143 /* (b) pointer to ancestor-pointer conversion. */
3144 rank.subrank = distance_to_ancestor (TYPE_TARGET_TYPE (parm),
3145 TYPE_TARGET_TYPE (arg),
3147 if (rank.subrank >= 0)
3148 return sum_ranks (BASE_PTR_CONVERSION_BADNESS, rank);
3150 return INCOMPATIBLE_TYPE_BADNESS;
3151 case TYPE_CODE_ARRAY:
3152 if (types_equal (TYPE_TARGET_TYPE (parm),
3153 TYPE_TARGET_TYPE (arg)))
3154 return EXACT_MATCH_BADNESS;
3155 return INCOMPATIBLE_TYPE_BADNESS;
3156 case TYPE_CODE_FUNC:
3157 return rank_one_type (TYPE_TARGET_TYPE (parm), arg, NULL);
3159 if (value != NULL && TYPE_CODE (value_type (value)) == TYPE_CODE_INT)
3161 if (value_as_long (value) == 0)
3163 /* Null pointer conversion: allow it to be cast to a pointer.
3164 [4.10.1 of C++ standard draft n3290] */
3165 return NULL_POINTER_CONVERSION_BADNESS;
3169 /* If type checking is disabled, allow the conversion. */
3170 if (!strict_type_checking)
3171 return NS_INTEGER_POINTER_CONVERSION_BADNESS;
3175 case TYPE_CODE_ENUM:
3176 case TYPE_CODE_FLAGS:
3177 case TYPE_CODE_CHAR:
3178 case TYPE_CODE_RANGE:
3179 case TYPE_CODE_BOOL:
3181 return INCOMPATIBLE_TYPE_BADNESS;
3183 case TYPE_CODE_ARRAY:
3184 switch (TYPE_CODE (arg))
3187 case TYPE_CODE_ARRAY:
3188 return rank_one_type (TYPE_TARGET_TYPE (parm),
3189 TYPE_TARGET_TYPE (arg), NULL);
3191 return INCOMPATIBLE_TYPE_BADNESS;
3193 case TYPE_CODE_FUNC:
3194 switch (TYPE_CODE (arg))
3196 case TYPE_CODE_PTR: /* funcptr -> func */
3197 return rank_one_type (parm, TYPE_TARGET_TYPE (arg), NULL);
3199 return INCOMPATIBLE_TYPE_BADNESS;
3202 switch (TYPE_CODE (arg))
3205 if (TYPE_LENGTH (arg) == TYPE_LENGTH (parm))
3207 /* Deal with signed, unsigned, and plain chars and
3208 signed and unsigned ints. */
3209 if (TYPE_NOSIGN (parm))
3211 /* This case only for character types. */
3212 if (TYPE_NOSIGN (arg))
3213 return EXACT_MATCH_BADNESS; /* plain char -> plain char */
3214 else /* signed/unsigned char -> plain char */
3215 return INTEGER_CONVERSION_BADNESS;
3217 else if (TYPE_UNSIGNED (parm))
3219 if (TYPE_UNSIGNED (arg))
3221 /* unsigned int -> unsigned int, or
3222 unsigned long -> unsigned long */
3223 if (integer_types_same_name_p (TYPE_NAME (parm),
3225 return EXACT_MATCH_BADNESS;
3226 else if (integer_types_same_name_p (TYPE_NAME (arg),
3228 && integer_types_same_name_p (TYPE_NAME (parm),
3230 /* unsigned int -> unsigned long */
3231 return INTEGER_PROMOTION_BADNESS;
3233 /* unsigned long -> unsigned int */
3234 return INTEGER_CONVERSION_BADNESS;
3238 if (integer_types_same_name_p (TYPE_NAME (arg),
3240 && integer_types_same_name_p (TYPE_NAME (parm),
3242 /* signed long -> unsigned int */
3243 return INTEGER_CONVERSION_BADNESS;
3245 /* signed int/long -> unsigned int/long */
3246 return INTEGER_CONVERSION_BADNESS;
3249 else if (!TYPE_NOSIGN (arg) && !TYPE_UNSIGNED (arg))
3251 if (integer_types_same_name_p (TYPE_NAME (parm),
3253 return EXACT_MATCH_BADNESS;
3254 else if (integer_types_same_name_p (TYPE_NAME (arg),
3256 && integer_types_same_name_p (TYPE_NAME (parm),
3258 return INTEGER_PROMOTION_BADNESS;
3260 return INTEGER_CONVERSION_BADNESS;
3263 return INTEGER_CONVERSION_BADNESS;
3265 else if (TYPE_LENGTH (arg) < TYPE_LENGTH (parm))
3266 return INTEGER_PROMOTION_BADNESS;
3268 return INTEGER_CONVERSION_BADNESS;
3269 case TYPE_CODE_ENUM:
3270 case TYPE_CODE_FLAGS:
3271 case TYPE_CODE_CHAR:
3272 case TYPE_CODE_RANGE:
3273 case TYPE_CODE_BOOL:
3274 if (TYPE_DECLARED_CLASS (arg))
3275 return INCOMPATIBLE_TYPE_BADNESS;
3276 return INTEGER_PROMOTION_BADNESS;
3278 return INT_FLOAT_CONVERSION_BADNESS;
3280 return NS_POINTER_CONVERSION_BADNESS;
3282 return INCOMPATIBLE_TYPE_BADNESS;
3285 case TYPE_CODE_ENUM:
3286 switch (TYPE_CODE (arg))
3289 case TYPE_CODE_CHAR:
3290 case TYPE_CODE_RANGE:
3291 case TYPE_CODE_BOOL:
3292 case TYPE_CODE_ENUM:
3293 if (TYPE_DECLARED_CLASS (parm) || TYPE_DECLARED_CLASS (arg))
3294 return INCOMPATIBLE_TYPE_BADNESS;
3295 return INTEGER_CONVERSION_BADNESS;
3297 return INT_FLOAT_CONVERSION_BADNESS;
3299 return INCOMPATIBLE_TYPE_BADNESS;
3302 case TYPE_CODE_CHAR:
3303 switch (TYPE_CODE (arg))
3305 case TYPE_CODE_RANGE:
3306 case TYPE_CODE_BOOL:
3307 case TYPE_CODE_ENUM:
3308 if (TYPE_DECLARED_CLASS (arg))
3309 return INCOMPATIBLE_TYPE_BADNESS;
3310 return INTEGER_CONVERSION_BADNESS;
3312 return INT_FLOAT_CONVERSION_BADNESS;
3314 if (TYPE_LENGTH (arg) > TYPE_LENGTH (parm))
3315 return INTEGER_CONVERSION_BADNESS;
3316 else if (TYPE_LENGTH (arg) < TYPE_LENGTH (parm))
3317 return INTEGER_PROMOTION_BADNESS;
3318 /* >>> !! else fall through !! <<< */
3319 case TYPE_CODE_CHAR:
3320 /* Deal with signed, unsigned, and plain chars for C++ and
3321 with int cases falling through from previous case. */
3322 if (TYPE_NOSIGN (parm))
3324 if (TYPE_NOSIGN (arg))
3325 return EXACT_MATCH_BADNESS;
3327 return INTEGER_CONVERSION_BADNESS;
3329 else if (TYPE_UNSIGNED (parm))
3331 if (TYPE_UNSIGNED (arg))
3332 return EXACT_MATCH_BADNESS;
3334 return INTEGER_PROMOTION_BADNESS;
3336 else if (!TYPE_NOSIGN (arg) && !TYPE_UNSIGNED (arg))
3337 return EXACT_MATCH_BADNESS;
3339 return INTEGER_CONVERSION_BADNESS;
3341 return INCOMPATIBLE_TYPE_BADNESS;
3344 case TYPE_CODE_RANGE:
3345 switch (TYPE_CODE (arg))
3348 case TYPE_CODE_CHAR:
3349 case TYPE_CODE_RANGE:
3350 case TYPE_CODE_BOOL:
3351 case TYPE_CODE_ENUM:
3352 return INTEGER_CONVERSION_BADNESS;
3354 return INT_FLOAT_CONVERSION_BADNESS;
3356 return INCOMPATIBLE_TYPE_BADNESS;
3359 case TYPE_CODE_BOOL:
3360 switch (TYPE_CODE (arg))
3362 /* n3290 draft, section 4.12.1 (conv.bool):
3364 "A prvalue of arithmetic, unscoped enumeration, pointer, or
3365 pointer to member type can be converted to a prvalue of type
3366 bool. A zero value, null pointer value, or null member pointer
3367 value is converted to false; any other value is converted to
3368 true. A prvalue of type std::nullptr_t can be converted to a
3369 prvalue of type bool; the resulting value is false." */
3371 case TYPE_CODE_CHAR:
3372 case TYPE_CODE_ENUM:
3374 case TYPE_CODE_MEMBERPTR:
3376 return BOOL_CONVERSION_BADNESS;
3377 case TYPE_CODE_RANGE:
3378 return INCOMPATIBLE_TYPE_BADNESS;
3379 case TYPE_CODE_BOOL:
3380 return EXACT_MATCH_BADNESS;
3382 return INCOMPATIBLE_TYPE_BADNESS;
3386 switch (TYPE_CODE (arg))
3389 if (TYPE_LENGTH (arg) < TYPE_LENGTH (parm))
3390 return FLOAT_PROMOTION_BADNESS;
3391 else if (TYPE_LENGTH (arg) == TYPE_LENGTH (parm))
3392 return EXACT_MATCH_BADNESS;
3394 return FLOAT_CONVERSION_BADNESS;
3396 case TYPE_CODE_BOOL:
3397 case TYPE_CODE_ENUM:
3398 case TYPE_CODE_RANGE:
3399 case TYPE_CODE_CHAR:
3400 return INT_FLOAT_CONVERSION_BADNESS;
3402 return INCOMPATIBLE_TYPE_BADNESS;
3405 case TYPE_CODE_COMPLEX:
3406 switch (TYPE_CODE (arg))
3407 { /* Strictly not needed for C++, but... */
3409 return FLOAT_PROMOTION_BADNESS;
3410 case TYPE_CODE_COMPLEX:
3411 return EXACT_MATCH_BADNESS;
3413 return INCOMPATIBLE_TYPE_BADNESS;
3416 case TYPE_CODE_STRUCT:
3417 /* currently same as TYPE_CODE_CLASS. */
3418 switch (TYPE_CODE (arg))
3420 case TYPE_CODE_STRUCT:
3421 /* Check for derivation */
3422 rank.subrank = distance_to_ancestor (parm, arg, 0);
3423 if (rank.subrank >= 0)
3424 return sum_ranks (BASE_CONVERSION_BADNESS, rank);
3425 /* else fall through */
3427 return INCOMPATIBLE_TYPE_BADNESS;
3430 case TYPE_CODE_UNION:
3431 switch (TYPE_CODE (arg))
3433 case TYPE_CODE_UNION:
3435 return INCOMPATIBLE_TYPE_BADNESS;
3438 case TYPE_CODE_MEMBERPTR:
3439 switch (TYPE_CODE (arg))
3442 return INCOMPATIBLE_TYPE_BADNESS;
3445 case TYPE_CODE_METHOD:
3446 switch (TYPE_CODE (arg))
3450 return INCOMPATIBLE_TYPE_BADNESS;
3454 switch (TYPE_CODE (arg))
3458 return INCOMPATIBLE_TYPE_BADNESS;
3463 switch (TYPE_CODE (arg))
3467 return rank_one_type (TYPE_FIELD_TYPE (parm, 0),
3468 TYPE_FIELD_TYPE (arg, 0), NULL);
3470 return INCOMPATIBLE_TYPE_BADNESS;
3473 case TYPE_CODE_VOID:
3475 return INCOMPATIBLE_TYPE_BADNESS;
3476 } /* switch (TYPE_CODE (arg)) */
3479 /* End of functions for overload resolution. */
3481 /* Routines to pretty-print types. */
3484 print_bit_vector (B_TYPE *bits, int nbits)
3488 for (bitno = 0; bitno < nbits; bitno++)
3490 if ((bitno % 8) == 0)
3492 puts_filtered (" ");
3494 if (B_TST (bits, bitno))
3495 printf_filtered (("1"));
3497 printf_filtered (("0"));
3501 /* Note the first arg should be the "this" pointer, we may not want to
3502 include it since we may get into a infinitely recursive
3506 print_arg_types (struct field *args, int nargs, int spaces)
3512 for (i = 0; i < nargs; i++)
3513 recursive_dump_type (args[i].type, spaces + 2);
3518 field_is_static (struct field *f)
3520 /* "static" fields are the fields whose location is not relative
3521 to the address of the enclosing struct. It would be nice to
3522 have a dedicated flag that would be set for static fields when
3523 the type is being created. But in practice, checking the field
3524 loc_kind should give us an accurate answer. */
3525 return (FIELD_LOC_KIND (*f) == FIELD_LOC_KIND_PHYSNAME
3526 || FIELD_LOC_KIND (*f) == FIELD_LOC_KIND_PHYSADDR);
3530 dump_fn_fieldlists (struct type *type, int spaces)
3536 printfi_filtered (spaces, "fn_fieldlists ");
3537 gdb_print_host_address (TYPE_FN_FIELDLISTS (type), gdb_stdout);
3538 printf_filtered ("\n");
3539 for (method_idx = 0; method_idx < TYPE_NFN_FIELDS (type); method_idx++)
3541 f = TYPE_FN_FIELDLIST1 (type, method_idx);
3542 printfi_filtered (spaces + 2, "[%d] name '%s' (",
3544 TYPE_FN_FIELDLIST_NAME (type, method_idx));
3545 gdb_print_host_address (TYPE_FN_FIELDLIST_NAME (type, method_idx),
3547 printf_filtered (_(") length %d\n"),
3548 TYPE_FN_FIELDLIST_LENGTH (type, method_idx));
3549 for (overload_idx = 0;
3550 overload_idx < TYPE_FN_FIELDLIST_LENGTH (type, method_idx);
3553 printfi_filtered (spaces + 4, "[%d] physname '%s' (",
3555 TYPE_FN_FIELD_PHYSNAME (f, overload_idx));
3556 gdb_print_host_address (TYPE_FN_FIELD_PHYSNAME (f, overload_idx),
3558 printf_filtered (")\n");
3559 printfi_filtered (spaces + 8, "type ");
3560 gdb_print_host_address (TYPE_FN_FIELD_TYPE (f, overload_idx),
3562 printf_filtered ("\n");
3564 recursive_dump_type (TYPE_FN_FIELD_TYPE (f, overload_idx),
3567 printfi_filtered (spaces + 8, "args ");
3568 gdb_print_host_address (TYPE_FN_FIELD_ARGS (f, overload_idx),
3570 printf_filtered ("\n");
3572 print_arg_types (TYPE_FN_FIELD_ARGS (f, overload_idx),
3573 TYPE_NFIELDS (TYPE_FN_FIELD_TYPE (f,
3576 printfi_filtered (spaces + 8, "fcontext ");
3577 gdb_print_host_address (TYPE_FN_FIELD_FCONTEXT (f, overload_idx),
3579 printf_filtered ("\n");
3581 printfi_filtered (spaces + 8, "is_const %d\n",
3582 TYPE_FN_FIELD_CONST (f, overload_idx));
3583 printfi_filtered (spaces + 8, "is_volatile %d\n",
3584 TYPE_FN_FIELD_VOLATILE (f, overload_idx));
3585 printfi_filtered (spaces + 8, "is_private %d\n",
3586 TYPE_FN_FIELD_PRIVATE (f, overload_idx));
3587 printfi_filtered (spaces + 8, "is_protected %d\n",
3588 TYPE_FN_FIELD_PROTECTED (f, overload_idx));
3589 printfi_filtered (spaces + 8, "is_stub %d\n",
3590 TYPE_FN_FIELD_STUB (f, overload_idx));
3591 printfi_filtered (spaces + 8, "voffset %u\n",
3592 TYPE_FN_FIELD_VOFFSET (f, overload_idx));
3598 print_cplus_stuff (struct type *type, int spaces)
3600 printfi_filtered (spaces, "n_baseclasses %d\n",
3601 TYPE_N_BASECLASSES (type));
3602 printfi_filtered (spaces, "nfn_fields %d\n",
3603 TYPE_NFN_FIELDS (type));
3604 if (TYPE_N_BASECLASSES (type) > 0)
3606 printfi_filtered (spaces, "virtual_field_bits (%d bits at *",
3607 TYPE_N_BASECLASSES (type));
3608 gdb_print_host_address (TYPE_FIELD_VIRTUAL_BITS (type),
3610 printf_filtered (")");
3612 print_bit_vector (TYPE_FIELD_VIRTUAL_BITS (type),
3613 TYPE_N_BASECLASSES (type));
3614 puts_filtered ("\n");
3616 if (TYPE_NFIELDS (type) > 0)
3618 if (TYPE_FIELD_PRIVATE_BITS (type) != NULL)
3620 printfi_filtered (spaces,
3621 "private_field_bits (%d bits at *",
3622 TYPE_NFIELDS (type));
3623 gdb_print_host_address (TYPE_FIELD_PRIVATE_BITS (type),
3625 printf_filtered (")");
3626 print_bit_vector (TYPE_FIELD_PRIVATE_BITS (type),
3627 TYPE_NFIELDS (type));
3628 puts_filtered ("\n");
3630 if (TYPE_FIELD_PROTECTED_BITS (type) != NULL)
3632 printfi_filtered (spaces,
3633 "protected_field_bits (%d bits at *",
3634 TYPE_NFIELDS (type));
3635 gdb_print_host_address (TYPE_FIELD_PROTECTED_BITS (type),
3637 printf_filtered (")");
3638 print_bit_vector (TYPE_FIELD_PROTECTED_BITS (type),
3639 TYPE_NFIELDS (type));
3640 puts_filtered ("\n");
3643 if (TYPE_NFN_FIELDS (type) > 0)
3645 dump_fn_fieldlists (type, spaces);
3649 /* Print the contents of the TYPE's type_specific union, assuming that
3650 its type-specific kind is TYPE_SPECIFIC_GNAT_STUFF. */
3653 print_gnat_stuff (struct type *type, int spaces)
3655 struct type *descriptive_type = TYPE_DESCRIPTIVE_TYPE (type);
3657 recursive_dump_type (descriptive_type, spaces + 2);
3660 static struct obstack dont_print_type_obstack;
3663 recursive_dump_type (struct type *type, int spaces)
3668 obstack_begin (&dont_print_type_obstack, 0);
3670 if (TYPE_NFIELDS (type) > 0
3671 || (HAVE_CPLUS_STRUCT (type) && TYPE_NFN_FIELDS (type) > 0))
3673 struct type **first_dont_print
3674 = (struct type **) obstack_base (&dont_print_type_obstack);
3676 int i = (struct type **)
3677 obstack_next_free (&dont_print_type_obstack) - first_dont_print;
3681 if (type == first_dont_print[i])
3683 printfi_filtered (spaces, "type node ");
3684 gdb_print_host_address (type, gdb_stdout);
3685 printf_filtered (_(" <same as already seen type>\n"));
3690 obstack_ptr_grow (&dont_print_type_obstack, type);
3693 printfi_filtered (spaces, "type node ");
3694 gdb_print_host_address (type, gdb_stdout);
3695 printf_filtered ("\n");
3696 printfi_filtered (spaces, "name '%s' (",
3697 TYPE_NAME (type) ? TYPE_NAME (type) : "<NULL>");
3698 gdb_print_host_address (TYPE_NAME (type), gdb_stdout);
3699 printf_filtered (")\n");
3700 printfi_filtered (spaces, "tagname '%s' (",
3701 TYPE_TAG_NAME (type) ? TYPE_TAG_NAME (type) : "<NULL>");
3702 gdb_print_host_address (TYPE_TAG_NAME (type), gdb_stdout);
3703 printf_filtered (")\n");
3704 printfi_filtered (spaces, "code 0x%x ", TYPE_CODE (type));
3705 switch (TYPE_CODE (type))
3707 case TYPE_CODE_UNDEF:
3708 printf_filtered ("(TYPE_CODE_UNDEF)");
3711 printf_filtered ("(TYPE_CODE_PTR)");
3713 case TYPE_CODE_ARRAY:
3714 printf_filtered ("(TYPE_CODE_ARRAY)");
3716 case TYPE_CODE_STRUCT:
3717 printf_filtered ("(TYPE_CODE_STRUCT)");
3719 case TYPE_CODE_UNION:
3720 printf_filtered ("(TYPE_CODE_UNION)");
3722 case TYPE_CODE_ENUM:
3723 printf_filtered ("(TYPE_CODE_ENUM)");
3725 case TYPE_CODE_FLAGS:
3726 printf_filtered ("(TYPE_CODE_FLAGS)");
3728 case TYPE_CODE_FUNC:
3729 printf_filtered ("(TYPE_CODE_FUNC)");
3732 printf_filtered ("(TYPE_CODE_INT)");
3735 printf_filtered ("(TYPE_CODE_FLT)");
3737 case TYPE_CODE_VOID:
3738 printf_filtered ("(TYPE_CODE_VOID)");
3741 printf_filtered ("(TYPE_CODE_SET)");
3743 case TYPE_CODE_RANGE:
3744 printf_filtered ("(TYPE_CODE_RANGE)");
3746 case TYPE_CODE_STRING:
3747 printf_filtered ("(TYPE_CODE_STRING)");
3749 case TYPE_CODE_ERROR:
3750 printf_filtered ("(TYPE_CODE_ERROR)");
3752 case TYPE_CODE_MEMBERPTR:
3753 printf_filtered ("(TYPE_CODE_MEMBERPTR)");
3755 case TYPE_CODE_METHODPTR:
3756 printf_filtered ("(TYPE_CODE_METHODPTR)");
3758 case TYPE_CODE_METHOD:
3759 printf_filtered ("(TYPE_CODE_METHOD)");
3762 printf_filtered ("(TYPE_CODE_REF)");
3764 case TYPE_CODE_CHAR:
3765 printf_filtered ("(TYPE_CODE_CHAR)");
3767 case TYPE_CODE_BOOL:
3768 printf_filtered ("(TYPE_CODE_BOOL)");
3770 case TYPE_CODE_COMPLEX:
3771 printf_filtered ("(TYPE_CODE_COMPLEX)");
3773 case TYPE_CODE_TYPEDEF:
3774 printf_filtered ("(TYPE_CODE_TYPEDEF)");
3776 case TYPE_CODE_NAMESPACE:
3777 printf_filtered ("(TYPE_CODE_NAMESPACE)");
3780 printf_filtered ("(UNKNOWN TYPE CODE)");
3783 puts_filtered ("\n");
3784 printfi_filtered (spaces, "length %d\n", TYPE_LENGTH (type));
3785 if (TYPE_OBJFILE_OWNED (type))
3787 printfi_filtered (spaces, "objfile ");
3788 gdb_print_host_address (TYPE_OWNER (type).objfile, gdb_stdout);
3792 printfi_filtered (spaces, "gdbarch ");
3793 gdb_print_host_address (TYPE_OWNER (type).gdbarch, gdb_stdout);
3795 printf_filtered ("\n");
3796 printfi_filtered (spaces, "target_type ");
3797 gdb_print_host_address (TYPE_TARGET_TYPE (type), gdb_stdout);
3798 printf_filtered ("\n");
3799 if (TYPE_TARGET_TYPE (type) != NULL)
3801 recursive_dump_type (TYPE_TARGET_TYPE (type), spaces + 2);
3803 printfi_filtered (spaces, "pointer_type ");
3804 gdb_print_host_address (TYPE_POINTER_TYPE (type), gdb_stdout);
3805 printf_filtered ("\n");
3806 printfi_filtered (spaces, "reference_type ");
3807 gdb_print_host_address (TYPE_REFERENCE_TYPE (type), gdb_stdout);
3808 printf_filtered ("\n");
3809 printfi_filtered (spaces, "type_chain ");
3810 gdb_print_host_address (TYPE_CHAIN (type), gdb_stdout);
3811 printf_filtered ("\n");
3812 printfi_filtered (spaces, "instance_flags 0x%x",
3813 TYPE_INSTANCE_FLAGS (type));
3814 if (TYPE_CONST (type))
3816 puts_filtered (" TYPE_FLAG_CONST");
3818 if (TYPE_VOLATILE (type))
3820 puts_filtered (" TYPE_FLAG_VOLATILE");
3822 if (TYPE_CODE_SPACE (type))
3824 puts_filtered (" TYPE_FLAG_CODE_SPACE");
3826 if (TYPE_DATA_SPACE (type))
3828 puts_filtered (" TYPE_FLAG_DATA_SPACE");
3830 if (TYPE_ADDRESS_CLASS_1 (type))
3832 puts_filtered (" TYPE_FLAG_ADDRESS_CLASS_1");
3834 if (TYPE_ADDRESS_CLASS_2 (type))
3836 puts_filtered (" TYPE_FLAG_ADDRESS_CLASS_2");
3838 if (TYPE_RESTRICT (type))
3840 puts_filtered (" TYPE_FLAG_RESTRICT");
3842 puts_filtered ("\n");
3844 printfi_filtered (spaces, "flags");
3845 if (TYPE_UNSIGNED (type))
3847 puts_filtered (" TYPE_FLAG_UNSIGNED");
3849 if (TYPE_NOSIGN (type))
3851 puts_filtered (" TYPE_FLAG_NOSIGN");
3853 if (TYPE_STUB (type))
3855 puts_filtered (" TYPE_FLAG_STUB");
3857 if (TYPE_TARGET_STUB (type))
3859 puts_filtered (" TYPE_FLAG_TARGET_STUB");
3861 if (TYPE_STATIC (type))
3863 puts_filtered (" TYPE_FLAG_STATIC");
3865 if (TYPE_PROTOTYPED (type))
3867 puts_filtered (" TYPE_FLAG_PROTOTYPED");
3869 if (TYPE_INCOMPLETE (type))
3871 puts_filtered (" TYPE_FLAG_INCOMPLETE");
3873 if (TYPE_VARARGS (type))
3875 puts_filtered (" TYPE_FLAG_VARARGS");
3877 /* This is used for things like AltiVec registers on ppc. Gcc emits
3878 an attribute for the array type, which tells whether or not we
3879 have a vector, instead of a regular array. */
3880 if (TYPE_VECTOR (type))
3882 puts_filtered (" TYPE_FLAG_VECTOR");
3884 if (TYPE_FIXED_INSTANCE (type))
3886 puts_filtered (" TYPE_FIXED_INSTANCE");
3888 if (TYPE_STUB_SUPPORTED (type))
3890 puts_filtered (" TYPE_STUB_SUPPORTED");
3892 if (TYPE_NOTTEXT (type))
3894 puts_filtered (" TYPE_NOTTEXT");
3896 puts_filtered ("\n");
3897 printfi_filtered (spaces, "nfields %d ", TYPE_NFIELDS (type));
3898 gdb_print_host_address (TYPE_FIELDS (type), gdb_stdout);
3899 puts_filtered ("\n");
3900 for (idx = 0; idx < TYPE_NFIELDS (type); idx++)
3902 if (TYPE_CODE (type) == TYPE_CODE_ENUM)
3903 printfi_filtered (spaces + 2,
3904 "[%d] enumval %s type ",
3905 idx, plongest (TYPE_FIELD_ENUMVAL (type, idx)));
3907 printfi_filtered (spaces + 2,
3908 "[%d] bitpos %d bitsize %d type ",
3909 idx, TYPE_FIELD_BITPOS (type, idx),
3910 TYPE_FIELD_BITSIZE (type, idx));
3911 gdb_print_host_address (TYPE_FIELD_TYPE (type, idx), gdb_stdout);
3912 printf_filtered (" name '%s' (",
3913 TYPE_FIELD_NAME (type, idx) != NULL
3914 ? TYPE_FIELD_NAME (type, idx)
3916 gdb_print_host_address (TYPE_FIELD_NAME (type, idx), gdb_stdout);
3917 printf_filtered (")\n");
3918 if (TYPE_FIELD_TYPE (type, idx) != NULL)
3920 recursive_dump_type (TYPE_FIELD_TYPE (type, idx), spaces + 4);
3923 if (TYPE_CODE (type) == TYPE_CODE_RANGE)
3925 printfi_filtered (spaces, "low %s%s high %s%s\n",
3926 plongest (TYPE_LOW_BOUND (type)),
3927 TYPE_LOW_BOUND_UNDEFINED (type) ? " (undefined)" : "",
3928 plongest (TYPE_HIGH_BOUND (type)),
3929 TYPE_HIGH_BOUND_UNDEFINED (type)
3930 ? " (undefined)" : "");
3932 printfi_filtered (spaces, "vptr_basetype ");
3933 gdb_print_host_address (TYPE_VPTR_BASETYPE (type), gdb_stdout);
3934 puts_filtered ("\n");
3935 if (TYPE_VPTR_BASETYPE (type) != NULL)
3937 recursive_dump_type (TYPE_VPTR_BASETYPE (type), spaces + 2);
3939 printfi_filtered (spaces, "vptr_fieldno %d\n",
3940 TYPE_VPTR_FIELDNO (type));
3942 switch (TYPE_SPECIFIC_FIELD (type))
3944 case TYPE_SPECIFIC_CPLUS_STUFF:
3945 printfi_filtered (spaces, "cplus_stuff ");
3946 gdb_print_host_address (TYPE_CPLUS_SPECIFIC (type),
3948 puts_filtered ("\n");
3949 print_cplus_stuff (type, spaces);
3952 case TYPE_SPECIFIC_GNAT_STUFF:
3953 printfi_filtered (spaces, "gnat_stuff ");
3954 gdb_print_host_address (TYPE_GNAT_SPECIFIC (type), gdb_stdout);
3955 puts_filtered ("\n");
3956 print_gnat_stuff (type, spaces);
3959 case TYPE_SPECIFIC_FLOATFORMAT:
3960 printfi_filtered (spaces, "floatformat ");
3961 if (TYPE_FLOATFORMAT (type) == NULL)
3962 puts_filtered ("(null)");
3965 puts_filtered ("{ ");
3966 if (TYPE_FLOATFORMAT (type)[0] == NULL
3967 || TYPE_FLOATFORMAT (type)[0]->name == NULL)
3968 puts_filtered ("(null)");
3970 puts_filtered (TYPE_FLOATFORMAT (type)[0]->name);
3972 puts_filtered (", ");
3973 if (TYPE_FLOATFORMAT (type)[1] == NULL
3974 || TYPE_FLOATFORMAT (type)[1]->name == NULL)
3975 puts_filtered ("(null)");
3977 puts_filtered (TYPE_FLOATFORMAT (type)[1]->name);
3979 puts_filtered (" }");
3981 puts_filtered ("\n");
3984 case TYPE_SPECIFIC_FUNC:
3985 printfi_filtered (spaces, "calling_convention %d\n",
3986 TYPE_CALLING_CONVENTION (type));
3987 /* tail_call_list is not printed. */
3992 obstack_free (&dont_print_type_obstack, NULL);
3995 /* Trivial helpers for the libiberty hash table, for mapping one
4000 struct type *old, *new;
4004 type_pair_hash (const void *item)
4006 const struct type_pair *pair = item;
4008 return htab_hash_pointer (pair->old);
4012 type_pair_eq (const void *item_lhs, const void *item_rhs)
4014 const struct type_pair *lhs = item_lhs, *rhs = item_rhs;
4016 return lhs->old == rhs->old;
4019 /* Allocate the hash table used by copy_type_recursive to walk
4020 types without duplicates. We use OBJFILE's obstack, because
4021 OBJFILE is about to be deleted. */
4024 create_copied_types_hash (struct objfile *objfile)
4026 return htab_create_alloc_ex (1, type_pair_hash, type_pair_eq,
4027 NULL, &objfile->objfile_obstack,
4028 hashtab_obstack_allocate,
4029 dummy_obstack_deallocate);
4032 /* Recursively copy (deep copy) TYPE, if it is associated with
4033 OBJFILE. Return a new type allocated using malloc, a saved type if
4034 we have already visited TYPE (using COPIED_TYPES), or TYPE if it is
4035 not associated with OBJFILE. */
4038 copy_type_recursive (struct objfile *objfile,
4040 htab_t copied_types)
4042 struct type_pair *stored, pair;
4044 struct type *new_type;
4046 if (! TYPE_OBJFILE_OWNED (type))
4049 /* This type shouldn't be pointing to any types in other objfiles;
4050 if it did, the type might disappear unexpectedly. */
4051 gdb_assert (TYPE_OBJFILE (type) == objfile);
4054 slot = htab_find_slot (copied_types, &pair, INSERT);
4056 return ((struct type_pair *) *slot)->new;
4058 new_type = alloc_type_arch (get_type_arch (type));
4060 /* We must add the new type to the hash table immediately, in case
4061 we encounter this type again during a recursive call below. */
4063 = obstack_alloc (&objfile->objfile_obstack, sizeof (struct type_pair));
4065 stored->new = new_type;
4068 /* Copy the common fields of types. For the main type, we simply
4069 copy the entire thing and then update specific fields as needed. */
4070 *TYPE_MAIN_TYPE (new_type) = *TYPE_MAIN_TYPE (type);
4071 TYPE_OBJFILE_OWNED (new_type) = 0;
4072 TYPE_OWNER (new_type).gdbarch = get_type_arch (type);
4074 if (TYPE_NAME (type))
4075 TYPE_NAME (new_type) = xstrdup (TYPE_NAME (type));
4076 if (TYPE_TAG_NAME (type))
4077 TYPE_TAG_NAME (new_type) = xstrdup (TYPE_TAG_NAME (type));
4079 TYPE_INSTANCE_FLAGS (new_type) = TYPE_INSTANCE_FLAGS (type);
4080 TYPE_LENGTH (new_type) = TYPE_LENGTH (type);
4082 /* Copy the fields. */
4083 if (TYPE_NFIELDS (type))
4087 nfields = TYPE_NFIELDS (type);
4088 TYPE_FIELDS (new_type) = XCNEWVEC (struct field, nfields);
4089 for (i = 0; i < nfields; i++)
4091 TYPE_FIELD_ARTIFICIAL (new_type, i) =
4092 TYPE_FIELD_ARTIFICIAL (type, i);
4093 TYPE_FIELD_BITSIZE (new_type, i) = TYPE_FIELD_BITSIZE (type, i);
4094 if (TYPE_FIELD_TYPE (type, i))
4095 TYPE_FIELD_TYPE (new_type, i)
4096 = copy_type_recursive (objfile, TYPE_FIELD_TYPE (type, i),
4098 if (TYPE_FIELD_NAME (type, i))
4099 TYPE_FIELD_NAME (new_type, i) =
4100 xstrdup (TYPE_FIELD_NAME (type, i));
4101 switch (TYPE_FIELD_LOC_KIND (type, i))
4103 case FIELD_LOC_KIND_BITPOS:
4104 SET_FIELD_BITPOS (TYPE_FIELD (new_type, i),
4105 TYPE_FIELD_BITPOS (type, i));
4107 case FIELD_LOC_KIND_ENUMVAL:
4108 SET_FIELD_ENUMVAL (TYPE_FIELD (new_type, i),
4109 TYPE_FIELD_ENUMVAL (type, i));
4111 case FIELD_LOC_KIND_PHYSADDR:
4112 SET_FIELD_PHYSADDR (TYPE_FIELD (new_type, i),
4113 TYPE_FIELD_STATIC_PHYSADDR (type, i));
4115 case FIELD_LOC_KIND_PHYSNAME:
4116 SET_FIELD_PHYSNAME (TYPE_FIELD (new_type, i),
4117 xstrdup (TYPE_FIELD_STATIC_PHYSNAME (type,
4121 internal_error (__FILE__, __LINE__,
4122 _("Unexpected type field location kind: %d"),
4123 TYPE_FIELD_LOC_KIND (type, i));
4128 /* For range types, copy the bounds information. */
4129 if (TYPE_CODE (type) == TYPE_CODE_RANGE)
4131 TYPE_RANGE_DATA (new_type) = xmalloc (sizeof (struct range_bounds));
4132 *TYPE_RANGE_DATA (new_type) = *TYPE_RANGE_DATA (type);
4135 /* Copy the data location information. */
4136 if (TYPE_DATA_LOCATION (type) != NULL)
4138 TYPE_DATA_LOCATION (new_type)
4139 = TYPE_ALLOC (new_type, sizeof (struct dynamic_prop));
4140 memcpy (TYPE_DATA_LOCATION (new_type), TYPE_DATA_LOCATION (type),
4141 sizeof (struct dynamic_prop));
4144 /* Copy pointers to other types. */
4145 if (TYPE_TARGET_TYPE (type))
4146 TYPE_TARGET_TYPE (new_type) =
4147 copy_type_recursive (objfile,
4148 TYPE_TARGET_TYPE (type),
4150 if (TYPE_VPTR_BASETYPE (type))
4151 TYPE_VPTR_BASETYPE (new_type) =
4152 copy_type_recursive (objfile,
4153 TYPE_VPTR_BASETYPE (type),
4155 /* Maybe copy the type_specific bits.
4157 NOTE drow/2005-12-09: We do not copy the C++-specific bits like
4158 base classes and methods. There's no fundamental reason why we
4159 can't, but at the moment it is not needed. */
4161 if (TYPE_CODE (type) == TYPE_CODE_FLT)
4162 TYPE_FLOATFORMAT (new_type) = TYPE_FLOATFORMAT (type);
4163 else if (TYPE_CODE (type) == TYPE_CODE_STRUCT
4164 || TYPE_CODE (type) == TYPE_CODE_UNION
4165 || TYPE_CODE (type) == TYPE_CODE_NAMESPACE)
4166 INIT_CPLUS_SPECIFIC (new_type);
4171 /* Make a copy of the given TYPE, except that the pointer & reference
4172 types are not preserved.
4174 This function assumes that the given type has an associated objfile.
4175 This objfile is used to allocate the new type. */
4178 copy_type (const struct type *type)
4180 struct type *new_type;
4182 gdb_assert (TYPE_OBJFILE_OWNED (type));
4184 new_type = alloc_type_copy (type);
4185 TYPE_INSTANCE_FLAGS (new_type) = TYPE_INSTANCE_FLAGS (type);
4186 TYPE_LENGTH (new_type) = TYPE_LENGTH (type);
4187 memcpy (TYPE_MAIN_TYPE (new_type), TYPE_MAIN_TYPE (type),
4188 sizeof (struct main_type));
4189 if (TYPE_DATA_LOCATION (type) != NULL)
4191 TYPE_DATA_LOCATION (new_type)
4192 = TYPE_ALLOC (new_type, sizeof (struct dynamic_prop));
4193 memcpy (TYPE_DATA_LOCATION (new_type), TYPE_DATA_LOCATION (type),
4194 sizeof (struct dynamic_prop));
4200 /* Helper functions to initialize architecture-specific types. */
4202 /* Allocate a type structure associated with GDBARCH and set its
4203 CODE, LENGTH, and NAME fields. */
4206 arch_type (struct gdbarch *gdbarch,
4207 enum type_code code, int length, char *name)
4211 type = alloc_type_arch (gdbarch);
4212 TYPE_CODE (type) = code;
4213 TYPE_LENGTH (type) = length;
4216 TYPE_NAME (type) = xstrdup (name);
4221 /* Allocate a TYPE_CODE_INT type structure associated with GDBARCH.
4222 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
4223 the type's TYPE_UNSIGNED flag. NAME is the type name. */
4226 arch_integer_type (struct gdbarch *gdbarch,
4227 int bit, int unsigned_p, char *name)
4231 t = arch_type (gdbarch, TYPE_CODE_INT, bit / TARGET_CHAR_BIT, name);
4233 TYPE_UNSIGNED (t) = 1;
4234 if (name && strcmp (name, "char") == 0)
4235 TYPE_NOSIGN (t) = 1;
4240 /* Allocate a TYPE_CODE_CHAR type structure associated with GDBARCH.
4241 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
4242 the type's TYPE_UNSIGNED flag. NAME is the type name. */
4245 arch_character_type (struct gdbarch *gdbarch,
4246 int bit, int unsigned_p, char *name)
4250 t = arch_type (gdbarch, TYPE_CODE_CHAR, bit / TARGET_CHAR_BIT, name);
4252 TYPE_UNSIGNED (t) = 1;
4257 /* Allocate a TYPE_CODE_BOOL type structure associated with GDBARCH.
4258 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
4259 the type's TYPE_UNSIGNED flag. NAME is the type name. */
4262 arch_boolean_type (struct gdbarch *gdbarch,
4263 int bit, int unsigned_p, char *name)
4267 t = arch_type (gdbarch, TYPE_CODE_BOOL, bit / TARGET_CHAR_BIT, name);
4269 TYPE_UNSIGNED (t) = 1;
4274 /* Allocate a TYPE_CODE_FLT type structure associated with GDBARCH.
4275 BIT is the type size in bits; if BIT equals -1, the size is
4276 determined by the floatformat. NAME is the type name. Set the
4277 TYPE_FLOATFORMAT from FLOATFORMATS. */
4280 arch_float_type (struct gdbarch *gdbarch,
4281 int bit, char *name, const struct floatformat **floatformats)
4287 gdb_assert (floatformats != NULL);
4288 gdb_assert (floatformats[0] != NULL && floatformats[1] != NULL);
4289 bit = floatformats[0]->totalsize;
4291 gdb_assert (bit >= 0);
4293 t = arch_type (gdbarch, TYPE_CODE_FLT, bit / TARGET_CHAR_BIT, name);
4294 TYPE_FLOATFORMAT (t) = floatformats;
4298 /* Allocate a TYPE_CODE_COMPLEX type structure associated with GDBARCH.
4299 NAME is the type name. TARGET_TYPE is the component float type. */
4302 arch_complex_type (struct gdbarch *gdbarch,
4303 char *name, struct type *target_type)
4307 t = arch_type (gdbarch, TYPE_CODE_COMPLEX,
4308 2 * TYPE_LENGTH (target_type), name);
4309 TYPE_TARGET_TYPE (t) = target_type;
4313 /* Allocate a TYPE_CODE_FLAGS type structure associated with GDBARCH.
4314 NAME is the type name. LENGTH is the size of the flag word in bytes. */
4317 arch_flags_type (struct gdbarch *gdbarch, char *name, int length)
4319 int nfields = length * TARGET_CHAR_BIT;
4322 type = arch_type (gdbarch, TYPE_CODE_FLAGS, length, name);
4323 TYPE_UNSIGNED (type) = 1;
4324 TYPE_NFIELDS (type) = nfields;
4325 TYPE_FIELDS (type) = TYPE_ZALLOC (type, nfields * sizeof (struct field));
4330 /* Add field to TYPE_CODE_FLAGS type TYPE to indicate the bit at
4331 position BITPOS is called NAME. */
4334 append_flags_type_flag (struct type *type, int bitpos, char *name)
4336 gdb_assert (TYPE_CODE (type) == TYPE_CODE_FLAGS);
4337 gdb_assert (bitpos < TYPE_NFIELDS (type));
4338 gdb_assert (bitpos >= 0);
4342 TYPE_FIELD_NAME (type, bitpos) = xstrdup (name);
4343 SET_FIELD_BITPOS (TYPE_FIELD (type, bitpos), bitpos);
4347 /* Don't show this field to the user. */
4348 SET_FIELD_BITPOS (TYPE_FIELD (type, bitpos), -1);
4352 /* Allocate a TYPE_CODE_STRUCT or TYPE_CODE_UNION type structure (as
4353 specified by CODE) associated with GDBARCH. NAME is the type name. */
4356 arch_composite_type (struct gdbarch *gdbarch, char *name, enum type_code code)
4360 gdb_assert (code == TYPE_CODE_STRUCT || code == TYPE_CODE_UNION);
4361 t = arch_type (gdbarch, code, 0, NULL);
4362 TYPE_TAG_NAME (t) = name;
4363 INIT_CPLUS_SPECIFIC (t);
4367 /* Add new field with name NAME and type FIELD to composite type T.
4368 Do not set the field's position or adjust the type's length;
4369 the caller should do so. Return the new field. */
4372 append_composite_type_field_raw (struct type *t, char *name,
4377 TYPE_NFIELDS (t) = TYPE_NFIELDS (t) + 1;
4378 TYPE_FIELDS (t) = xrealloc (TYPE_FIELDS (t),
4379 sizeof (struct field) * TYPE_NFIELDS (t));
4380 f = &(TYPE_FIELDS (t)[TYPE_NFIELDS (t) - 1]);
4381 memset (f, 0, sizeof f[0]);
4382 FIELD_TYPE (f[0]) = field;
4383 FIELD_NAME (f[0]) = name;
4387 /* Add new field with name NAME and type FIELD to composite type T.
4388 ALIGNMENT (if non-zero) specifies the minimum field alignment. */
4391 append_composite_type_field_aligned (struct type *t, char *name,
4392 struct type *field, int alignment)
4394 struct field *f = append_composite_type_field_raw (t, name, field);
4396 if (TYPE_CODE (t) == TYPE_CODE_UNION)
4398 if (TYPE_LENGTH (t) < TYPE_LENGTH (field))
4399 TYPE_LENGTH (t) = TYPE_LENGTH (field);
4401 else if (TYPE_CODE (t) == TYPE_CODE_STRUCT)
4403 TYPE_LENGTH (t) = TYPE_LENGTH (t) + TYPE_LENGTH (field);
4404 if (TYPE_NFIELDS (t) > 1)
4406 SET_FIELD_BITPOS (f[0],
4407 (FIELD_BITPOS (f[-1])
4408 + (TYPE_LENGTH (FIELD_TYPE (f[-1]))
4409 * TARGET_CHAR_BIT)));
4415 alignment *= TARGET_CHAR_BIT;
4416 left = FIELD_BITPOS (f[0]) % alignment;
4420 SET_FIELD_BITPOS (f[0], FIELD_BITPOS (f[0]) + (alignment - left));
4421 TYPE_LENGTH (t) += (alignment - left) / TARGET_CHAR_BIT;
4428 /* Add new field with name NAME and type FIELD to composite type T. */
4431 append_composite_type_field (struct type *t, char *name,
4434 append_composite_type_field_aligned (t, name, field, 0);
4437 static struct gdbarch_data *gdbtypes_data;
4439 const struct builtin_type *
4440 builtin_type (struct gdbarch *gdbarch)
4442 return gdbarch_data (gdbarch, gdbtypes_data);
4446 gdbtypes_post_init (struct gdbarch *gdbarch)
4448 struct builtin_type *builtin_type
4449 = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct builtin_type);
4452 builtin_type->builtin_void
4453 = arch_type (gdbarch, TYPE_CODE_VOID, 1, "void");
4454 builtin_type->builtin_char
4455 = arch_integer_type (gdbarch, TARGET_CHAR_BIT,
4456 !gdbarch_char_signed (gdbarch), "char");
4457 builtin_type->builtin_signed_char
4458 = arch_integer_type (gdbarch, TARGET_CHAR_BIT,
4460 builtin_type->builtin_unsigned_char
4461 = arch_integer_type (gdbarch, TARGET_CHAR_BIT,
4462 1, "unsigned char");
4463 builtin_type->builtin_short
4464 = arch_integer_type (gdbarch, gdbarch_short_bit (gdbarch),
4466 builtin_type->builtin_unsigned_short
4467 = arch_integer_type (gdbarch, gdbarch_short_bit (gdbarch),
4468 1, "unsigned short");
4469 builtin_type->builtin_int
4470 = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch),
4472 builtin_type->builtin_unsigned_int
4473 = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch),
4475 builtin_type->builtin_long
4476 = arch_integer_type (gdbarch, gdbarch_long_bit (gdbarch),
4478 builtin_type->builtin_unsigned_long
4479 = arch_integer_type (gdbarch, gdbarch_long_bit (gdbarch),
4480 1, "unsigned long");
4481 builtin_type->builtin_long_long
4482 = arch_integer_type (gdbarch, gdbarch_long_long_bit (gdbarch),
4484 builtin_type->builtin_unsigned_long_long
4485 = arch_integer_type (gdbarch, gdbarch_long_long_bit (gdbarch),
4486 1, "unsigned long long");
4487 builtin_type->builtin_float
4488 = arch_float_type (gdbarch, gdbarch_float_bit (gdbarch),
4489 "float", gdbarch_float_format (gdbarch));
4490 builtin_type->builtin_double
4491 = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch),
4492 "double", gdbarch_double_format (gdbarch));
4493 builtin_type->builtin_long_double
4494 = arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch),
4495 "long double", gdbarch_long_double_format (gdbarch));
4496 builtin_type->builtin_complex
4497 = arch_complex_type (gdbarch, "complex",
4498 builtin_type->builtin_float);
4499 builtin_type->builtin_double_complex
4500 = arch_complex_type (gdbarch, "double complex",
4501 builtin_type->builtin_double);
4502 builtin_type->builtin_string
4503 = arch_type (gdbarch, TYPE_CODE_STRING, 1, "string");
4504 builtin_type->builtin_bool
4505 = arch_type (gdbarch, TYPE_CODE_BOOL, 1, "bool");
4507 /* The following three are about decimal floating point types, which
4508 are 32-bits, 64-bits and 128-bits respectively. */
4509 builtin_type->builtin_decfloat
4510 = arch_type (gdbarch, TYPE_CODE_DECFLOAT, 32 / 8, "_Decimal32");
4511 builtin_type->builtin_decdouble
4512 = arch_type (gdbarch, TYPE_CODE_DECFLOAT, 64 / 8, "_Decimal64");
4513 builtin_type->builtin_declong
4514 = arch_type (gdbarch, TYPE_CODE_DECFLOAT, 128 / 8, "_Decimal128");
4516 /* "True" character types. */
4517 builtin_type->builtin_true_char
4518 = arch_character_type (gdbarch, TARGET_CHAR_BIT, 0, "true character");
4519 builtin_type->builtin_true_unsigned_char
4520 = arch_character_type (gdbarch, TARGET_CHAR_BIT, 1, "true character");
4522 /* Fixed-size integer types. */
4523 builtin_type->builtin_int0
4524 = arch_integer_type (gdbarch, 0, 0, "int0_t");
4525 builtin_type->builtin_int8
4526 = arch_integer_type (gdbarch, 8, 0, "int8_t");
4527 builtin_type->builtin_uint8
4528 = arch_integer_type (gdbarch, 8, 1, "uint8_t");
4529 builtin_type->builtin_int16
4530 = arch_integer_type (gdbarch, 16, 0, "int16_t");
4531 builtin_type->builtin_uint16
4532 = arch_integer_type (gdbarch, 16, 1, "uint16_t");
4533 builtin_type->builtin_int32
4534 = arch_integer_type (gdbarch, 32, 0, "int32_t");
4535 builtin_type->builtin_uint32
4536 = arch_integer_type (gdbarch, 32, 1, "uint32_t");
4537 builtin_type->builtin_int64
4538 = arch_integer_type (gdbarch, 64, 0, "int64_t");
4539 builtin_type->builtin_uint64
4540 = arch_integer_type (gdbarch, 64, 1, "uint64_t");
4541 builtin_type->builtin_int128
4542 = arch_integer_type (gdbarch, 128, 0, "int128_t");
4543 builtin_type->builtin_uint128
4544 = arch_integer_type (gdbarch, 128, 1, "uint128_t");
4545 TYPE_INSTANCE_FLAGS (builtin_type->builtin_int8) |=
4546 TYPE_INSTANCE_FLAG_NOTTEXT;
4547 TYPE_INSTANCE_FLAGS (builtin_type->builtin_uint8) |=
4548 TYPE_INSTANCE_FLAG_NOTTEXT;
4550 /* Wide character types. */
4551 builtin_type->builtin_char16
4552 = arch_integer_type (gdbarch, 16, 0, "char16_t");
4553 builtin_type->builtin_char32
4554 = arch_integer_type (gdbarch, 32, 0, "char32_t");
4557 /* Default data/code pointer types. */
4558 builtin_type->builtin_data_ptr
4559 = lookup_pointer_type (builtin_type->builtin_void);
4560 builtin_type->builtin_func_ptr
4561 = lookup_pointer_type (lookup_function_type (builtin_type->builtin_void));
4562 builtin_type->builtin_func_func
4563 = lookup_function_type (builtin_type->builtin_func_ptr);
4565 /* This type represents a GDB internal function. */
4566 builtin_type->internal_fn
4567 = arch_type (gdbarch, TYPE_CODE_INTERNAL_FUNCTION, 0,
4568 "<internal function>");
4570 /* This type represents an xmethod. */
4571 builtin_type->xmethod
4572 = arch_type (gdbarch, TYPE_CODE_XMETHOD, 0, "<xmethod>");
4574 return builtin_type;
4577 /* This set of objfile-based types is intended to be used by symbol
4578 readers as basic types. */
4580 static const struct objfile_data *objfile_type_data;
4582 const struct objfile_type *
4583 objfile_type (struct objfile *objfile)
4585 struct gdbarch *gdbarch;
4586 struct objfile_type *objfile_type
4587 = objfile_data (objfile, objfile_type_data);
4590 return objfile_type;
4592 objfile_type = OBSTACK_CALLOC (&objfile->objfile_obstack,
4593 1, struct objfile_type);
4595 /* Use the objfile architecture to determine basic type properties. */
4596 gdbarch = get_objfile_arch (objfile);
4599 objfile_type->builtin_void
4600 = init_type (TYPE_CODE_VOID, 1,
4604 objfile_type->builtin_char
4605 = init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
4607 | (gdbarch_char_signed (gdbarch) ? 0 : TYPE_FLAG_UNSIGNED)),
4609 objfile_type->builtin_signed_char
4610 = init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
4612 "signed char", objfile);
4613 objfile_type->builtin_unsigned_char
4614 = init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
4616 "unsigned char", objfile);
4617 objfile_type->builtin_short
4618 = init_type (TYPE_CODE_INT,
4619 gdbarch_short_bit (gdbarch) / TARGET_CHAR_BIT,
4620 0, "short", objfile);
4621 objfile_type->builtin_unsigned_short
4622 = init_type (TYPE_CODE_INT,
4623 gdbarch_short_bit (gdbarch) / TARGET_CHAR_BIT,
4624 TYPE_FLAG_UNSIGNED, "unsigned short", objfile);
4625 objfile_type->builtin_int
4626 = init_type (TYPE_CODE_INT,
4627 gdbarch_int_bit (gdbarch) / TARGET_CHAR_BIT,
4629 objfile_type->builtin_unsigned_int
4630 = init_type (TYPE_CODE_INT,
4631 gdbarch_int_bit (gdbarch) / TARGET_CHAR_BIT,
4632 TYPE_FLAG_UNSIGNED, "unsigned int", objfile);
4633 objfile_type->builtin_long
4634 = init_type (TYPE_CODE_INT,
4635 gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT,
4636 0, "long", objfile);
4637 objfile_type->builtin_unsigned_long
4638 = init_type (TYPE_CODE_INT,
4639 gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT,
4640 TYPE_FLAG_UNSIGNED, "unsigned long", objfile);
4641 objfile_type->builtin_long_long
4642 = init_type (TYPE_CODE_INT,
4643 gdbarch_long_long_bit (gdbarch) / TARGET_CHAR_BIT,
4644 0, "long long", objfile);
4645 objfile_type->builtin_unsigned_long_long
4646 = init_type (TYPE_CODE_INT,
4647 gdbarch_long_long_bit (gdbarch) / TARGET_CHAR_BIT,
4648 TYPE_FLAG_UNSIGNED, "unsigned long long", objfile);
4650 objfile_type->builtin_float
4651 = init_type (TYPE_CODE_FLT,
4652 gdbarch_float_bit (gdbarch) / TARGET_CHAR_BIT,
4653 0, "float", objfile);
4654 TYPE_FLOATFORMAT (objfile_type->builtin_float)
4655 = gdbarch_float_format (gdbarch);
4656 objfile_type->builtin_double
4657 = init_type (TYPE_CODE_FLT,
4658 gdbarch_double_bit (gdbarch) / TARGET_CHAR_BIT,
4659 0, "double", objfile);
4660 TYPE_FLOATFORMAT (objfile_type->builtin_double)
4661 = gdbarch_double_format (gdbarch);
4662 objfile_type->builtin_long_double
4663 = init_type (TYPE_CODE_FLT,
4664 gdbarch_long_double_bit (gdbarch) / TARGET_CHAR_BIT,
4665 0, "long double", objfile);
4666 TYPE_FLOATFORMAT (objfile_type->builtin_long_double)
4667 = gdbarch_long_double_format (gdbarch);
4669 /* This type represents a type that was unrecognized in symbol read-in. */
4670 objfile_type->builtin_error
4671 = init_type (TYPE_CODE_ERROR, 0, 0, "<unknown type>", objfile);
4673 /* The following set of types is used for symbols with no
4674 debug information. */
4675 objfile_type->nodebug_text_symbol
4676 = init_type (TYPE_CODE_FUNC, 1, 0,
4677 "<text variable, no debug info>", objfile);
4678 TYPE_TARGET_TYPE (objfile_type->nodebug_text_symbol)
4679 = objfile_type->builtin_int;
4680 objfile_type->nodebug_text_gnu_ifunc_symbol
4681 = init_type (TYPE_CODE_FUNC, 1, TYPE_FLAG_GNU_IFUNC,
4682 "<text gnu-indirect-function variable, no debug info>",
4684 TYPE_TARGET_TYPE (objfile_type->nodebug_text_gnu_ifunc_symbol)
4685 = objfile_type->nodebug_text_symbol;
4686 objfile_type->nodebug_got_plt_symbol
4687 = init_type (TYPE_CODE_PTR, gdbarch_addr_bit (gdbarch) / 8, 0,
4688 "<text from jump slot in .got.plt, no debug info>",
4690 TYPE_TARGET_TYPE (objfile_type->nodebug_got_plt_symbol)
4691 = objfile_type->nodebug_text_symbol;
4692 objfile_type->nodebug_data_symbol
4693 = init_type (TYPE_CODE_INT,
4694 gdbarch_int_bit (gdbarch) / HOST_CHAR_BIT, 0,
4695 "<data variable, no debug info>", objfile);
4696 objfile_type->nodebug_unknown_symbol
4697 = init_type (TYPE_CODE_INT, 1, 0,
4698 "<variable (not text or data), no debug info>", objfile);
4699 objfile_type->nodebug_tls_symbol
4700 = init_type (TYPE_CODE_INT,
4701 gdbarch_int_bit (gdbarch) / HOST_CHAR_BIT, 0,
4702 "<thread local variable, no debug info>", objfile);
4704 /* NOTE: on some targets, addresses and pointers are not necessarily
4708 - gdb's `struct type' always describes the target's
4710 - gdb's `struct value' objects should always hold values in
4712 - gdb's CORE_ADDR values are addresses in the unified virtual
4713 address space that the assembler and linker work with. Thus,
4714 since target_read_memory takes a CORE_ADDR as an argument, it
4715 can access any memory on the target, even if the processor has
4716 separate code and data address spaces.
4718 In this context, objfile_type->builtin_core_addr is a bit odd:
4719 it's a target type for a value the target will never see. It's
4720 only used to hold the values of (typeless) linker symbols, which
4721 are indeed in the unified virtual address space. */
4723 objfile_type->builtin_core_addr
4724 = init_type (TYPE_CODE_INT,
4725 gdbarch_addr_bit (gdbarch) / 8,
4726 TYPE_FLAG_UNSIGNED, "__CORE_ADDR", objfile);
4728 set_objfile_data (objfile, objfile_type_data, objfile_type);
4729 return objfile_type;
4732 extern initialize_file_ftype _initialize_gdbtypes;
4735 _initialize_gdbtypes (void)
4737 gdbtypes_data = gdbarch_data_register_post_init (gdbtypes_post_init);
4738 objfile_type_data = register_objfile_data ();
4740 add_setshow_zuinteger_cmd ("overload", no_class, &overload_debug,
4741 _("Set debugging of C++ overloading."),
4742 _("Show debugging of C++ overloading."),
4743 _("When enabled, ranking of the "
4744 "functions is displayed."),
4746 show_overload_debug,
4747 &setdebuglist, &showdebuglist);
4749 /* Add user knob for controlling resolution of opaque types. */
4750 add_setshow_boolean_cmd ("opaque-type-resolution", class_support,
4751 &opaque_type_resolution,
4752 _("Set resolution of opaque struct/class/union"
4753 " types (if set before loading symbols)."),
4754 _("Show resolution of opaque struct/class/union"
4755 " types (if set before loading symbols)."),
4757 show_opaque_type_resolution,
4758 &setlist, &showlist);
4760 /* Add an option to permit non-strict type checking. */
4761 add_setshow_boolean_cmd ("type", class_support,
4762 &strict_type_checking,
4763 _("Set strict type checking."),
4764 _("Show strict type checking."),
4766 show_strict_type_checking,
4767 &setchecklist, &showchecklist);