1 /* Support routines for manipulating internal types for GDB.
3 Copyright (C) 1992-2015 Free Software Foundation, Inc.
5 Contributed by Cygnus Support, using pieces from other GDB modules.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
28 #include "expression.h"
33 #include "complaints.h"
37 #include "cp-support.h"
39 #include "dwarf2loc.h"
42 /* Initialize BADNESS constants. */
44 const struct rank LENGTH_MISMATCH_BADNESS = {100,0};
46 const struct rank TOO_FEW_PARAMS_BADNESS = {100,0};
47 const struct rank INCOMPATIBLE_TYPE_BADNESS = {100,0};
49 const struct rank EXACT_MATCH_BADNESS = {0,0};
51 const struct rank INTEGER_PROMOTION_BADNESS = {1,0};
52 const struct rank FLOAT_PROMOTION_BADNESS = {1,0};
53 const struct rank BASE_PTR_CONVERSION_BADNESS = {1,0};
54 const struct rank INTEGER_CONVERSION_BADNESS = {2,0};
55 const struct rank FLOAT_CONVERSION_BADNESS = {2,0};
56 const struct rank INT_FLOAT_CONVERSION_BADNESS = {2,0};
57 const struct rank VOID_PTR_CONVERSION_BADNESS = {2,0};
58 const struct rank BOOL_CONVERSION_BADNESS = {3,0};
59 const struct rank BASE_CONVERSION_BADNESS = {2,0};
60 const struct rank REFERENCE_CONVERSION_BADNESS = {2,0};
61 const struct rank NULL_POINTER_CONVERSION_BADNESS = {2,0};
62 const struct rank NS_POINTER_CONVERSION_BADNESS = {10,0};
63 const struct rank NS_INTEGER_POINTER_CONVERSION_BADNESS = {3,0};
65 /* Floatformat pairs. */
66 const struct floatformat *floatformats_ieee_half[BFD_ENDIAN_UNKNOWN] = {
67 &floatformat_ieee_half_big,
68 &floatformat_ieee_half_little
70 const struct floatformat *floatformats_ieee_single[BFD_ENDIAN_UNKNOWN] = {
71 &floatformat_ieee_single_big,
72 &floatformat_ieee_single_little
74 const struct floatformat *floatformats_ieee_double[BFD_ENDIAN_UNKNOWN] = {
75 &floatformat_ieee_double_big,
76 &floatformat_ieee_double_little
78 const struct floatformat *floatformats_ieee_double_littlebyte_bigword[BFD_ENDIAN_UNKNOWN] = {
79 &floatformat_ieee_double_big,
80 &floatformat_ieee_double_littlebyte_bigword
82 const struct floatformat *floatformats_i387_ext[BFD_ENDIAN_UNKNOWN] = {
83 &floatformat_i387_ext,
86 const struct floatformat *floatformats_m68881_ext[BFD_ENDIAN_UNKNOWN] = {
87 &floatformat_m68881_ext,
88 &floatformat_m68881_ext
90 const struct floatformat *floatformats_arm_ext[BFD_ENDIAN_UNKNOWN] = {
91 &floatformat_arm_ext_big,
92 &floatformat_arm_ext_littlebyte_bigword
94 const struct floatformat *floatformats_ia64_spill[BFD_ENDIAN_UNKNOWN] = {
95 &floatformat_ia64_spill_big,
96 &floatformat_ia64_spill_little
98 const struct floatformat *floatformats_ia64_quad[BFD_ENDIAN_UNKNOWN] = {
99 &floatformat_ia64_quad_big,
100 &floatformat_ia64_quad_little
102 const struct floatformat *floatformats_vax_f[BFD_ENDIAN_UNKNOWN] = {
106 const struct floatformat *floatformats_vax_d[BFD_ENDIAN_UNKNOWN] = {
110 const struct floatformat *floatformats_ibm_long_double[BFD_ENDIAN_UNKNOWN] = {
111 &floatformat_ibm_long_double_big,
112 &floatformat_ibm_long_double_little
115 /* Should opaque types be resolved? */
117 static int opaque_type_resolution = 1;
119 /* A flag to enable printing of debugging information of C++
122 unsigned int overload_debug = 0;
124 /* A flag to enable strict type checking. */
126 static int strict_type_checking = 1;
128 /* A function to show whether opaque types are resolved. */
131 show_opaque_type_resolution (struct ui_file *file, int from_tty,
132 struct cmd_list_element *c,
135 fprintf_filtered (file, _("Resolution of opaque struct/class/union types "
136 "(if set before loading symbols) is %s.\n"),
140 /* A function to show whether C++ overload debugging is enabled. */
143 show_overload_debug (struct ui_file *file, int from_tty,
144 struct cmd_list_element *c, const char *value)
146 fprintf_filtered (file, _("Debugging of C++ overloading is %s.\n"),
150 /* A function to show the status of strict type checking. */
153 show_strict_type_checking (struct ui_file *file, int from_tty,
154 struct cmd_list_element *c, const char *value)
156 fprintf_filtered (file, _("Strict type checking is %s.\n"), value);
160 /* Allocate a new OBJFILE-associated type structure and fill it
161 with some defaults. Space for the type structure is allocated
162 on the objfile's objfile_obstack. */
165 alloc_type (struct objfile *objfile)
169 gdb_assert (objfile != NULL);
171 /* Alloc the structure and start off with all fields zeroed. */
172 type = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct type);
173 TYPE_MAIN_TYPE (type) = OBSTACK_ZALLOC (&objfile->objfile_obstack,
175 OBJSTAT (objfile, n_types++);
177 TYPE_OBJFILE_OWNED (type) = 1;
178 TYPE_OWNER (type).objfile = objfile;
180 /* Initialize the fields that might not be zero. */
182 TYPE_CODE (type) = TYPE_CODE_UNDEF;
183 TYPE_CHAIN (type) = type; /* Chain back to itself. */
188 /* Allocate a new GDBARCH-associated type structure and fill it
189 with some defaults. Space for the type structure is allocated
193 alloc_type_arch (struct gdbarch *gdbarch)
197 gdb_assert (gdbarch != NULL);
199 /* Alloc the structure and start off with all fields zeroed. */
201 type = XCNEW (struct type);
202 TYPE_MAIN_TYPE (type) = XCNEW (struct main_type);
204 TYPE_OBJFILE_OWNED (type) = 0;
205 TYPE_OWNER (type).gdbarch = gdbarch;
207 /* Initialize the fields that might not be zero. */
209 TYPE_CODE (type) = TYPE_CODE_UNDEF;
210 TYPE_CHAIN (type) = type; /* Chain back to itself. */
215 /* If TYPE is objfile-associated, allocate a new type structure
216 associated with the same objfile. If TYPE is gdbarch-associated,
217 allocate a new type structure associated with the same gdbarch. */
220 alloc_type_copy (const struct type *type)
222 if (TYPE_OBJFILE_OWNED (type))
223 return alloc_type (TYPE_OWNER (type).objfile);
225 return alloc_type_arch (TYPE_OWNER (type).gdbarch);
228 /* If TYPE is gdbarch-associated, return that architecture.
229 If TYPE is objfile-associated, return that objfile's architecture. */
232 get_type_arch (const struct type *type)
234 if (TYPE_OBJFILE_OWNED (type))
235 return get_objfile_arch (TYPE_OWNER (type).objfile);
237 return TYPE_OWNER (type).gdbarch;
240 /* See gdbtypes.h. */
243 get_target_type (struct type *type)
247 type = TYPE_TARGET_TYPE (type);
249 type = check_typedef (type);
255 /* Alloc a new type instance structure, fill it with some defaults,
256 and point it at OLDTYPE. Allocate the new type instance from the
257 same place as OLDTYPE. */
260 alloc_type_instance (struct type *oldtype)
264 /* Allocate the structure. */
266 if (! TYPE_OBJFILE_OWNED (oldtype))
267 type = XCNEW (struct type);
269 type = OBSTACK_ZALLOC (&TYPE_OBJFILE (oldtype)->objfile_obstack,
272 TYPE_MAIN_TYPE (type) = TYPE_MAIN_TYPE (oldtype);
274 TYPE_CHAIN (type) = type; /* Chain back to itself for now. */
279 /* Clear all remnants of the previous type at TYPE, in preparation for
280 replacing it with something else. Preserve owner information. */
283 smash_type (struct type *type)
285 int objfile_owned = TYPE_OBJFILE_OWNED (type);
286 union type_owner owner = TYPE_OWNER (type);
288 memset (TYPE_MAIN_TYPE (type), 0, sizeof (struct main_type));
290 /* Restore owner information. */
291 TYPE_OBJFILE_OWNED (type) = objfile_owned;
292 TYPE_OWNER (type) = owner;
294 /* For now, delete the rings. */
295 TYPE_CHAIN (type) = type;
297 /* For now, leave the pointer/reference types alone. */
300 /* Lookup a pointer to a type TYPE. TYPEPTR, if nonzero, points
301 to a pointer to memory where the pointer type should be stored.
302 If *TYPEPTR is zero, update it to point to the pointer type we return.
303 We allocate new memory if needed. */
306 make_pointer_type (struct type *type, struct type **typeptr)
308 struct type *ntype; /* New type */
311 ntype = TYPE_POINTER_TYPE (type);
316 return ntype; /* Don't care about alloc,
317 and have new type. */
318 else if (*typeptr == 0)
320 *typeptr = ntype; /* Tracking alloc, and have new type. */
325 if (typeptr == 0 || *typeptr == 0) /* We'll need to allocate one. */
327 ntype = alloc_type_copy (type);
331 else /* We have storage, but need to reset it. */
334 chain = TYPE_CHAIN (ntype);
336 TYPE_CHAIN (ntype) = chain;
339 TYPE_TARGET_TYPE (ntype) = type;
340 TYPE_POINTER_TYPE (type) = ntype;
342 /* FIXME! Assumes the machine has only one representation for pointers! */
345 = gdbarch_ptr_bit (get_type_arch (type)) / TARGET_CHAR_BIT;
346 TYPE_CODE (ntype) = TYPE_CODE_PTR;
348 /* Mark pointers as unsigned. The target converts between pointers
349 and addresses (CORE_ADDRs) using gdbarch_pointer_to_address and
350 gdbarch_address_to_pointer. */
351 TYPE_UNSIGNED (ntype) = 1;
353 /* Update the length of all the other variants of this type. */
354 chain = TYPE_CHAIN (ntype);
355 while (chain != ntype)
357 TYPE_LENGTH (chain) = TYPE_LENGTH (ntype);
358 chain = TYPE_CHAIN (chain);
364 /* Given a type TYPE, return a type of pointers to that type.
365 May need to construct such a type if this is the first use. */
368 lookup_pointer_type (struct type *type)
370 return make_pointer_type (type, (struct type **) 0);
373 /* Lookup a C++ `reference' to a type TYPE. TYPEPTR, if nonzero,
374 points to a pointer to memory where the reference type should be
375 stored. If *TYPEPTR is zero, update it to point to the reference
376 type we return. We allocate new memory if needed. */
379 make_reference_type (struct type *type, struct type **typeptr)
381 struct type *ntype; /* New type */
384 ntype = TYPE_REFERENCE_TYPE (type);
389 return ntype; /* Don't care about alloc,
390 and have new type. */
391 else if (*typeptr == 0)
393 *typeptr = ntype; /* Tracking alloc, and have new type. */
398 if (typeptr == 0 || *typeptr == 0) /* We'll need to allocate one. */
400 ntype = alloc_type_copy (type);
404 else /* We have storage, but need to reset it. */
407 chain = TYPE_CHAIN (ntype);
409 TYPE_CHAIN (ntype) = chain;
412 TYPE_TARGET_TYPE (ntype) = type;
413 TYPE_REFERENCE_TYPE (type) = ntype;
415 /* FIXME! Assume the machine has only one representation for
416 references, and that it matches the (only) representation for
419 TYPE_LENGTH (ntype) =
420 gdbarch_ptr_bit (get_type_arch (type)) / TARGET_CHAR_BIT;
421 TYPE_CODE (ntype) = TYPE_CODE_REF;
423 if (!TYPE_REFERENCE_TYPE (type)) /* Remember it, if don't have one. */
424 TYPE_REFERENCE_TYPE (type) = ntype;
426 /* Update the length of all the other variants of this type. */
427 chain = TYPE_CHAIN (ntype);
428 while (chain != ntype)
430 TYPE_LENGTH (chain) = TYPE_LENGTH (ntype);
431 chain = TYPE_CHAIN (chain);
437 /* Same as above, but caller doesn't care about memory allocation
441 lookup_reference_type (struct type *type)
443 return make_reference_type (type, (struct type **) 0);
446 /* Lookup a function type that returns type TYPE. TYPEPTR, if
447 nonzero, points to a pointer to memory where the function type
448 should be stored. If *TYPEPTR is zero, update it to point to the
449 function type we return. We allocate new memory if needed. */
452 make_function_type (struct type *type, struct type **typeptr)
454 struct type *ntype; /* New type */
456 if (typeptr == 0 || *typeptr == 0) /* We'll need to allocate one. */
458 ntype = alloc_type_copy (type);
462 else /* We have storage, but need to reset it. */
468 TYPE_TARGET_TYPE (ntype) = type;
470 TYPE_LENGTH (ntype) = 1;
471 TYPE_CODE (ntype) = TYPE_CODE_FUNC;
473 INIT_FUNC_SPECIFIC (ntype);
478 /* Given a type TYPE, return a type of functions that return that type.
479 May need to construct such a type if this is the first use. */
482 lookup_function_type (struct type *type)
484 return make_function_type (type, (struct type **) 0);
487 /* Given a type TYPE and argument types, return the appropriate
488 function type. If the final type in PARAM_TYPES is NULL, make a
492 lookup_function_type_with_arguments (struct type *type,
494 struct type **param_types)
496 struct type *fn = make_function_type (type, (struct type **) 0);
501 if (param_types[nparams - 1] == NULL)
504 TYPE_VARARGS (fn) = 1;
506 else if (TYPE_CODE (check_typedef (param_types[nparams - 1]))
510 /* Caller should have ensured this. */
511 gdb_assert (nparams == 0);
512 TYPE_PROTOTYPED (fn) = 1;
516 TYPE_NFIELDS (fn) = nparams;
517 TYPE_FIELDS (fn) = TYPE_ZALLOC (fn, nparams * sizeof (struct field));
518 for (i = 0; i < nparams; ++i)
519 TYPE_FIELD_TYPE (fn, i) = param_types[i];
524 /* Identify address space identifier by name --
525 return the integer flag defined in gdbtypes.h. */
528 address_space_name_to_int (struct gdbarch *gdbarch, char *space_identifier)
532 /* Check for known address space delimiters. */
533 if (!strcmp (space_identifier, "code"))
534 return TYPE_INSTANCE_FLAG_CODE_SPACE;
535 else if (!strcmp (space_identifier, "data"))
536 return TYPE_INSTANCE_FLAG_DATA_SPACE;
537 else if (gdbarch_address_class_name_to_type_flags_p (gdbarch)
538 && gdbarch_address_class_name_to_type_flags (gdbarch,
543 error (_("Unknown address space specifier: \"%s\""), space_identifier);
546 /* Identify address space identifier by integer flag as defined in
547 gdbtypes.h -- return the string version of the adress space name. */
550 address_space_int_to_name (struct gdbarch *gdbarch, int space_flag)
552 if (space_flag & TYPE_INSTANCE_FLAG_CODE_SPACE)
554 else if (space_flag & TYPE_INSTANCE_FLAG_DATA_SPACE)
556 else if ((space_flag & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL)
557 && gdbarch_address_class_type_flags_to_name_p (gdbarch))
558 return gdbarch_address_class_type_flags_to_name (gdbarch, space_flag);
563 /* Create a new type with instance flags NEW_FLAGS, based on TYPE.
565 If STORAGE is non-NULL, create the new type instance there.
566 STORAGE must be in the same obstack as TYPE. */
569 make_qualified_type (struct type *type, int new_flags,
570 struct type *storage)
577 if (TYPE_INSTANCE_FLAGS (ntype) == new_flags)
579 ntype = TYPE_CHAIN (ntype);
581 while (ntype != type);
583 /* Create a new type instance. */
585 ntype = alloc_type_instance (type);
588 /* If STORAGE was provided, it had better be in the same objfile
589 as TYPE. Otherwise, we can't link it into TYPE's cv chain:
590 if one objfile is freed and the other kept, we'd have
591 dangling pointers. */
592 gdb_assert (TYPE_OBJFILE (type) == TYPE_OBJFILE (storage));
595 TYPE_MAIN_TYPE (ntype) = TYPE_MAIN_TYPE (type);
596 TYPE_CHAIN (ntype) = ntype;
599 /* Pointers or references to the original type are not relevant to
601 TYPE_POINTER_TYPE (ntype) = (struct type *) 0;
602 TYPE_REFERENCE_TYPE (ntype) = (struct type *) 0;
604 /* Chain the new qualified type to the old type. */
605 TYPE_CHAIN (ntype) = TYPE_CHAIN (type);
606 TYPE_CHAIN (type) = ntype;
608 /* Now set the instance flags and return the new type. */
609 TYPE_INSTANCE_FLAGS (ntype) = new_flags;
611 /* Set length of new type to that of the original type. */
612 TYPE_LENGTH (ntype) = TYPE_LENGTH (type);
617 /* Make an address-space-delimited variant of a type -- a type that
618 is identical to the one supplied except that it has an address
619 space attribute attached to it (such as "code" or "data").
621 The space attributes "code" and "data" are for Harvard
622 architectures. The address space attributes are for architectures
623 which have alternately sized pointers or pointers with alternate
627 make_type_with_address_space (struct type *type, int space_flag)
629 int new_flags = ((TYPE_INSTANCE_FLAGS (type)
630 & ~(TYPE_INSTANCE_FLAG_CODE_SPACE
631 | TYPE_INSTANCE_FLAG_DATA_SPACE
632 | TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL))
635 return make_qualified_type (type, new_flags, NULL);
638 /* Make a "c-v" variant of a type -- a type that is identical to the
639 one supplied except that it may have const or volatile attributes
640 CNST is a flag for setting the const attribute
641 VOLTL is a flag for setting the volatile attribute
642 TYPE is the base type whose variant we are creating.
644 If TYPEPTR and *TYPEPTR are non-zero, then *TYPEPTR points to
645 storage to hold the new qualified type; *TYPEPTR and TYPE must be
646 in the same objfile. Otherwise, allocate fresh memory for the new
647 type whereever TYPE lives. If TYPEPTR is non-zero, set it to the
648 new type we construct. */
651 make_cv_type (int cnst, int voltl,
653 struct type **typeptr)
655 struct type *ntype; /* New type */
657 int new_flags = (TYPE_INSTANCE_FLAGS (type)
658 & ~(TYPE_INSTANCE_FLAG_CONST
659 | TYPE_INSTANCE_FLAG_VOLATILE));
662 new_flags |= TYPE_INSTANCE_FLAG_CONST;
665 new_flags |= TYPE_INSTANCE_FLAG_VOLATILE;
667 if (typeptr && *typeptr != NULL)
669 /* TYPE and *TYPEPTR must be in the same objfile. We can't have
670 a C-V variant chain that threads across objfiles: if one
671 objfile gets freed, then the other has a broken C-V chain.
673 This code used to try to copy over the main type from TYPE to
674 *TYPEPTR if they were in different objfiles, but that's
675 wrong, too: TYPE may have a field list or member function
676 lists, which refer to types of their own, etc. etc. The
677 whole shebang would need to be copied over recursively; you
678 can't have inter-objfile pointers. The only thing to do is
679 to leave stub types as stub types, and look them up afresh by
680 name each time you encounter them. */
681 gdb_assert (TYPE_OBJFILE (*typeptr) == TYPE_OBJFILE (type));
684 ntype = make_qualified_type (type, new_flags,
685 typeptr ? *typeptr : NULL);
693 /* Make a 'restrict'-qualified version of TYPE. */
696 make_restrict_type (struct type *type)
698 return make_qualified_type (type,
699 (TYPE_INSTANCE_FLAGS (type)
700 | TYPE_INSTANCE_FLAG_RESTRICT),
704 /* Make a type without const, volatile, or restrict. */
707 make_unqualified_type (struct type *type)
709 return make_qualified_type (type,
710 (TYPE_INSTANCE_FLAGS (type)
711 & ~(TYPE_INSTANCE_FLAG_CONST
712 | TYPE_INSTANCE_FLAG_VOLATILE
713 | TYPE_INSTANCE_FLAG_RESTRICT)),
717 /* Make a '_Atomic'-qualified version of TYPE. */
720 make_atomic_type (struct type *type)
722 return make_qualified_type (type,
723 (TYPE_INSTANCE_FLAGS (type)
724 | TYPE_INSTANCE_FLAG_ATOMIC),
728 /* Replace the contents of ntype with the type *type. This changes the
729 contents, rather than the pointer for TYPE_MAIN_TYPE (ntype); thus
730 the changes are propogated to all types in the TYPE_CHAIN.
732 In order to build recursive types, it's inevitable that we'll need
733 to update types in place --- but this sort of indiscriminate
734 smashing is ugly, and needs to be replaced with something more
735 controlled. TYPE_MAIN_TYPE is a step in this direction; it's not
736 clear if more steps are needed. */
739 replace_type (struct type *ntype, struct type *type)
743 /* These two types had better be in the same objfile. Otherwise,
744 the assignment of one type's main type structure to the other
745 will produce a type with references to objects (names; field
746 lists; etc.) allocated on an objfile other than its own. */
747 gdb_assert (TYPE_OBJFILE (ntype) == TYPE_OBJFILE (ntype));
749 *TYPE_MAIN_TYPE (ntype) = *TYPE_MAIN_TYPE (type);
751 /* The type length is not a part of the main type. Update it for
752 each type on the variant chain. */
756 /* Assert that this element of the chain has no address-class bits
757 set in its flags. Such type variants might have type lengths
758 which are supposed to be different from the non-address-class
759 variants. This assertion shouldn't ever be triggered because
760 symbol readers which do construct address-class variants don't
761 call replace_type(). */
762 gdb_assert (TYPE_ADDRESS_CLASS_ALL (chain) == 0);
764 TYPE_LENGTH (chain) = TYPE_LENGTH (type);
765 chain = TYPE_CHAIN (chain);
767 while (ntype != chain);
769 /* Assert that the two types have equivalent instance qualifiers.
770 This should be true for at least all of our debug readers. */
771 gdb_assert (TYPE_INSTANCE_FLAGS (ntype) == TYPE_INSTANCE_FLAGS (type));
774 /* Implement direct support for MEMBER_TYPE in GNU C++.
775 May need to construct such a type if this is the first use.
776 The TYPE is the type of the member. The DOMAIN is the type
777 of the aggregate that the member belongs to. */
780 lookup_memberptr_type (struct type *type, struct type *domain)
784 mtype = alloc_type_copy (type);
785 smash_to_memberptr_type (mtype, domain, type);
789 /* Return a pointer-to-method type, for a method of type TO_TYPE. */
792 lookup_methodptr_type (struct type *to_type)
796 mtype = alloc_type_copy (to_type);
797 smash_to_methodptr_type (mtype, to_type);
801 /* Allocate a stub method whose return type is TYPE. This apparently
802 happens for speed of symbol reading, since parsing out the
803 arguments to the method is cpu-intensive, the way we are doing it.
804 So, we will fill in arguments later. This always returns a fresh
808 allocate_stub_method (struct type *type)
812 mtype = alloc_type_copy (type);
813 TYPE_CODE (mtype) = TYPE_CODE_METHOD;
814 TYPE_LENGTH (mtype) = 1;
815 TYPE_STUB (mtype) = 1;
816 TYPE_TARGET_TYPE (mtype) = type;
817 /* TYPE_SELF_TYPE (mtype) = unknown yet */
821 /* Create a range type with a dynamic range from LOW_BOUND to
822 HIGH_BOUND, inclusive. See create_range_type for further details. */
825 create_range_type (struct type *result_type, struct type *index_type,
826 const struct dynamic_prop *low_bound,
827 const struct dynamic_prop *high_bound)
829 if (result_type == NULL)
830 result_type = alloc_type_copy (index_type);
831 TYPE_CODE (result_type) = TYPE_CODE_RANGE;
832 TYPE_TARGET_TYPE (result_type) = index_type;
833 if (TYPE_STUB (index_type))
834 TYPE_TARGET_STUB (result_type) = 1;
836 TYPE_LENGTH (result_type) = TYPE_LENGTH (check_typedef (index_type));
838 TYPE_RANGE_DATA (result_type) = (struct range_bounds *)
839 TYPE_ZALLOC (result_type, sizeof (struct range_bounds));
840 TYPE_RANGE_DATA (result_type)->low = *low_bound;
841 TYPE_RANGE_DATA (result_type)->high = *high_bound;
843 if (low_bound->kind == PROP_CONST && low_bound->data.const_val >= 0)
844 TYPE_UNSIGNED (result_type) = 1;
846 /* Ada allows the declaration of range types whose upper bound is
847 less than the lower bound, so checking the lower bound is not
848 enough. Make sure we do not mark a range type whose upper bound
849 is negative as unsigned. */
850 if (high_bound->kind == PROP_CONST && high_bound->data.const_val < 0)
851 TYPE_UNSIGNED (result_type) = 0;
856 /* Create a range type using either a blank type supplied in
857 RESULT_TYPE, or creating a new type, inheriting the objfile from
860 Indices will be of type INDEX_TYPE, and will range from LOW_BOUND
861 to HIGH_BOUND, inclusive.
863 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
864 sure it is TYPE_CODE_UNDEF before we bash it into a range type? */
867 create_static_range_type (struct type *result_type, struct type *index_type,
868 LONGEST low_bound, LONGEST high_bound)
870 struct dynamic_prop low, high;
872 low.kind = PROP_CONST;
873 low.data.const_val = low_bound;
875 high.kind = PROP_CONST;
876 high.data.const_val = high_bound;
878 result_type = create_range_type (result_type, index_type, &low, &high);
883 /* Predicate tests whether BOUNDS are static. Returns 1 if all bounds values
884 are static, otherwise returns 0. */
887 has_static_range (const struct range_bounds *bounds)
889 return (bounds->low.kind == PROP_CONST
890 && bounds->high.kind == PROP_CONST);
894 /* Set *LOWP and *HIGHP to the lower and upper bounds of discrete type
895 TYPE. Return 1 if type is a range type, 0 if it is discrete (and
896 bounds will fit in LONGEST), or -1 otherwise. */
899 get_discrete_bounds (struct type *type, LONGEST *lowp, LONGEST *highp)
901 CHECK_TYPEDEF (type);
902 switch (TYPE_CODE (type))
904 case TYPE_CODE_RANGE:
905 *lowp = TYPE_LOW_BOUND (type);
906 *highp = TYPE_HIGH_BOUND (type);
909 if (TYPE_NFIELDS (type) > 0)
911 /* The enums may not be sorted by value, so search all
915 *lowp = *highp = TYPE_FIELD_ENUMVAL (type, 0);
916 for (i = 0; i < TYPE_NFIELDS (type); i++)
918 if (TYPE_FIELD_ENUMVAL (type, i) < *lowp)
919 *lowp = TYPE_FIELD_ENUMVAL (type, i);
920 if (TYPE_FIELD_ENUMVAL (type, i) > *highp)
921 *highp = TYPE_FIELD_ENUMVAL (type, i);
924 /* Set unsigned indicator if warranted. */
927 TYPE_UNSIGNED (type) = 1;
941 if (TYPE_LENGTH (type) > sizeof (LONGEST)) /* Too big */
943 if (!TYPE_UNSIGNED (type))
945 *lowp = -(1 << (TYPE_LENGTH (type) * TARGET_CHAR_BIT - 1));
949 /* ... fall through for unsigned ints ... */
952 /* This round-about calculation is to avoid shifting by
953 TYPE_LENGTH (type) * TARGET_CHAR_BIT, which will not work
954 if TYPE_LENGTH (type) == sizeof (LONGEST). */
955 *highp = 1 << (TYPE_LENGTH (type) * TARGET_CHAR_BIT - 1);
956 *highp = (*highp - 1) | *highp;
963 /* Assuming TYPE is a simple, non-empty array type, compute its upper
964 and lower bound. Save the low bound into LOW_BOUND if not NULL.
965 Save the high bound into HIGH_BOUND if not NULL.
967 Return 1 if the operation was successful. Return zero otherwise,
968 in which case the values of LOW_BOUND and HIGH_BOUNDS are unmodified.
970 We now simply use get_discrete_bounds call to get the values
971 of the low and high bounds.
972 get_discrete_bounds can return three values:
973 1, meaning that index is a range,
974 0, meaning that index is a discrete type,
975 or -1 for failure. */
978 get_array_bounds (struct type *type, LONGEST *low_bound, LONGEST *high_bound)
980 struct type *index = TYPE_INDEX_TYPE (type);
988 res = get_discrete_bounds (index, &low, &high);
992 /* Check if the array bounds are undefined. */
994 && ((low_bound && TYPE_ARRAY_LOWER_BOUND_IS_UNDEFINED (type))
995 || (high_bound && TYPE_ARRAY_UPPER_BOUND_IS_UNDEFINED (type))))
1007 /* Create an array type using either a blank type supplied in
1008 RESULT_TYPE, or creating a new type, inheriting the objfile from
1011 Elements will be of type ELEMENT_TYPE, the indices will be of type
1014 If BIT_STRIDE is not zero, build a packed array type whose element
1015 size is BIT_STRIDE. Otherwise, ignore this parameter.
1017 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
1018 sure it is TYPE_CODE_UNDEF before we bash it into an array
1022 create_array_type_with_stride (struct type *result_type,
1023 struct type *element_type,
1024 struct type *range_type,
1025 unsigned int bit_stride)
1027 if (result_type == NULL)
1028 result_type = alloc_type_copy (range_type);
1030 TYPE_CODE (result_type) = TYPE_CODE_ARRAY;
1031 TYPE_TARGET_TYPE (result_type) = element_type;
1032 if (has_static_range (TYPE_RANGE_DATA (range_type)))
1034 LONGEST low_bound, high_bound;
1036 if (get_discrete_bounds (range_type, &low_bound, &high_bound) < 0)
1037 low_bound = high_bound = 0;
1038 CHECK_TYPEDEF (element_type);
1039 /* Be careful when setting the array length. Ada arrays can be
1040 empty arrays with the high_bound being smaller than the low_bound.
1041 In such cases, the array length should be zero. */
1042 if (high_bound < low_bound)
1043 TYPE_LENGTH (result_type) = 0;
1044 else if (bit_stride > 0)
1045 TYPE_LENGTH (result_type) =
1046 (bit_stride * (high_bound - low_bound + 1) + 7) / 8;
1048 TYPE_LENGTH (result_type) =
1049 TYPE_LENGTH (element_type) * (high_bound - low_bound + 1);
1053 /* This type is dynamic and its length needs to be computed
1054 on demand. In the meantime, avoid leaving the TYPE_LENGTH
1055 undefined by setting it to zero. Although we are not expected
1056 to trust TYPE_LENGTH in this case, setting the size to zero
1057 allows us to avoid allocating objects of random sizes in case
1058 we accidently do. */
1059 TYPE_LENGTH (result_type) = 0;
1062 TYPE_NFIELDS (result_type) = 1;
1063 TYPE_FIELDS (result_type) =
1064 (struct field *) TYPE_ZALLOC (result_type, sizeof (struct field));
1065 TYPE_INDEX_TYPE (result_type) = range_type;
1067 TYPE_FIELD_BITSIZE (result_type, 0) = bit_stride;
1069 /* TYPE_FLAG_TARGET_STUB will take care of zero length arrays. */
1070 if (TYPE_LENGTH (result_type) == 0)
1071 TYPE_TARGET_STUB (result_type) = 1;
1076 /* Same as create_array_type_with_stride but with no bit_stride
1077 (BIT_STRIDE = 0), thus building an unpacked array. */
1080 create_array_type (struct type *result_type,
1081 struct type *element_type,
1082 struct type *range_type)
1084 return create_array_type_with_stride (result_type, element_type,
1089 lookup_array_range_type (struct type *element_type,
1090 LONGEST low_bound, LONGEST high_bound)
1092 struct gdbarch *gdbarch = get_type_arch (element_type);
1093 struct type *index_type = builtin_type (gdbarch)->builtin_int;
1094 struct type *range_type
1095 = create_static_range_type (NULL, index_type, low_bound, high_bound);
1097 return create_array_type (NULL, element_type, range_type);
1100 /* Create a string type using either a blank type supplied in
1101 RESULT_TYPE, or creating a new type. String types are similar
1102 enough to array of char types that we can use create_array_type to
1103 build the basic type and then bash it into a string type.
1105 For fixed length strings, the range type contains 0 as the lower
1106 bound and the length of the string minus one as the upper bound.
1108 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
1109 sure it is TYPE_CODE_UNDEF before we bash it into a string
1113 create_string_type (struct type *result_type,
1114 struct type *string_char_type,
1115 struct type *range_type)
1117 result_type = create_array_type (result_type,
1120 TYPE_CODE (result_type) = TYPE_CODE_STRING;
1125 lookup_string_range_type (struct type *string_char_type,
1126 LONGEST low_bound, LONGEST high_bound)
1128 struct type *result_type;
1130 result_type = lookup_array_range_type (string_char_type,
1131 low_bound, high_bound);
1132 TYPE_CODE (result_type) = TYPE_CODE_STRING;
1137 create_set_type (struct type *result_type, struct type *domain_type)
1139 if (result_type == NULL)
1140 result_type = alloc_type_copy (domain_type);
1142 TYPE_CODE (result_type) = TYPE_CODE_SET;
1143 TYPE_NFIELDS (result_type) = 1;
1144 TYPE_FIELDS (result_type) = TYPE_ZALLOC (result_type, sizeof (struct field));
1146 if (!TYPE_STUB (domain_type))
1148 LONGEST low_bound, high_bound, bit_length;
1150 if (get_discrete_bounds (domain_type, &low_bound, &high_bound) < 0)
1151 low_bound = high_bound = 0;
1152 bit_length = high_bound - low_bound + 1;
1153 TYPE_LENGTH (result_type)
1154 = (bit_length + TARGET_CHAR_BIT - 1) / TARGET_CHAR_BIT;
1156 TYPE_UNSIGNED (result_type) = 1;
1158 TYPE_FIELD_TYPE (result_type, 0) = domain_type;
1163 /* Convert ARRAY_TYPE to a vector type. This may modify ARRAY_TYPE
1164 and any array types nested inside it. */
1167 make_vector_type (struct type *array_type)
1169 struct type *inner_array, *elt_type;
1172 /* Find the innermost array type, in case the array is
1173 multi-dimensional. */
1174 inner_array = array_type;
1175 while (TYPE_CODE (TYPE_TARGET_TYPE (inner_array)) == TYPE_CODE_ARRAY)
1176 inner_array = TYPE_TARGET_TYPE (inner_array);
1178 elt_type = TYPE_TARGET_TYPE (inner_array);
1179 if (TYPE_CODE (elt_type) == TYPE_CODE_INT)
1181 flags = TYPE_INSTANCE_FLAGS (elt_type) | TYPE_INSTANCE_FLAG_NOTTEXT;
1182 elt_type = make_qualified_type (elt_type, flags, NULL);
1183 TYPE_TARGET_TYPE (inner_array) = elt_type;
1186 TYPE_VECTOR (array_type) = 1;
1190 init_vector_type (struct type *elt_type, int n)
1192 struct type *array_type;
1194 array_type = lookup_array_range_type (elt_type, 0, n - 1);
1195 make_vector_type (array_type);
1199 /* Internal routine called by TYPE_SELF_TYPE to return the type that TYPE
1200 belongs to. In c++ this is the class of "this", but TYPE_THIS_TYPE is too
1201 confusing. "self" is a common enough replacement for "this".
1202 TYPE must be one of TYPE_CODE_METHODPTR, TYPE_CODE_MEMBERPTR, or
1203 TYPE_CODE_METHOD. */
1206 internal_type_self_type (struct type *type)
1208 switch (TYPE_CODE (type))
1210 case TYPE_CODE_METHODPTR:
1211 case TYPE_CODE_MEMBERPTR:
1212 if (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_NONE)
1214 gdb_assert (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_SELF_TYPE);
1215 return TYPE_MAIN_TYPE (type)->type_specific.self_type;
1216 case TYPE_CODE_METHOD:
1217 if (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_NONE)
1219 gdb_assert (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_FUNC);
1220 return TYPE_MAIN_TYPE (type)->type_specific.func_stuff->self_type;
1222 gdb_assert_not_reached ("bad type");
1226 /* Set the type of the class that TYPE belongs to.
1227 In c++ this is the class of "this".
1228 TYPE must be one of TYPE_CODE_METHODPTR, TYPE_CODE_MEMBERPTR, or
1229 TYPE_CODE_METHOD. */
1232 set_type_self_type (struct type *type, struct type *self_type)
1234 switch (TYPE_CODE (type))
1236 case TYPE_CODE_METHODPTR:
1237 case TYPE_CODE_MEMBERPTR:
1238 if (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_NONE)
1239 TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_SELF_TYPE;
1240 gdb_assert (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_SELF_TYPE);
1241 TYPE_MAIN_TYPE (type)->type_specific.self_type = self_type;
1243 case TYPE_CODE_METHOD:
1244 if (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_NONE)
1245 INIT_FUNC_SPECIFIC (type);
1246 gdb_assert (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_FUNC);
1247 TYPE_MAIN_TYPE (type)->type_specific.func_stuff->self_type = self_type;
1250 gdb_assert_not_reached ("bad type");
1254 /* Smash TYPE to be a type of pointers to members of SELF_TYPE with type
1255 TO_TYPE. A member pointer is a wierd thing -- it amounts to a
1256 typed offset into a struct, e.g. "an int at offset 8". A MEMBER
1257 TYPE doesn't include the offset (that's the value of the MEMBER
1258 itself), but does include the structure type into which it points
1261 When "smashing" the type, we preserve the objfile that the old type
1262 pointed to, since we aren't changing where the type is actually
1266 smash_to_memberptr_type (struct type *type, struct type *self_type,
1267 struct type *to_type)
1270 TYPE_CODE (type) = TYPE_CODE_MEMBERPTR;
1271 TYPE_TARGET_TYPE (type) = to_type;
1272 set_type_self_type (type, self_type);
1273 /* Assume that a data member pointer is the same size as a normal
1276 = gdbarch_ptr_bit (get_type_arch (to_type)) / TARGET_CHAR_BIT;
1279 /* Smash TYPE to be a type of pointer to methods type TO_TYPE.
1281 When "smashing" the type, we preserve the objfile that the old type
1282 pointed to, since we aren't changing where the type is actually
1286 smash_to_methodptr_type (struct type *type, struct type *to_type)
1289 TYPE_CODE (type) = TYPE_CODE_METHODPTR;
1290 TYPE_TARGET_TYPE (type) = to_type;
1291 set_type_self_type (type, TYPE_SELF_TYPE (to_type));
1292 TYPE_LENGTH (type) = cplus_method_ptr_size (to_type);
1295 /* Smash TYPE to be a type of method of SELF_TYPE with type TO_TYPE.
1296 METHOD just means `function that gets an extra "this" argument'.
1298 When "smashing" the type, we preserve the objfile that the old type
1299 pointed to, since we aren't changing where the type is actually
1303 smash_to_method_type (struct type *type, struct type *self_type,
1304 struct type *to_type, struct field *args,
1305 int nargs, int varargs)
1308 TYPE_CODE (type) = TYPE_CODE_METHOD;
1309 TYPE_TARGET_TYPE (type) = to_type;
1310 set_type_self_type (type, self_type);
1311 TYPE_FIELDS (type) = args;
1312 TYPE_NFIELDS (type) = nargs;
1314 TYPE_VARARGS (type) = 1;
1315 TYPE_LENGTH (type) = 1; /* In practice, this is never needed. */
1318 /* Return a typename for a struct/union/enum type without "struct ",
1319 "union ", or "enum ". If the type has a NULL name, return NULL. */
1322 type_name_no_tag (const struct type *type)
1324 if (TYPE_TAG_NAME (type) != NULL)
1325 return TYPE_TAG_NAME (type);
1327 /* Is there code which expects this to return the name if there is
1328 no tag name? My guess is that this is mainly used for C++ in
1329 cases where the two will always be the same. */
1330 return TYPE_NAME (type);
1333 /* A wrapper of type_name_no_tag which calls error if the type is anonymous.
1334 Since GCC PR debug/47510 DWARF provides associated information to detect the
1335 anonymous class linkage name from its typedef.
1337 Parameter TYPE should not yet have CHECK_TYPEDEF applied, this function will
1341 type_name_no_tag_or_error (struct type *type)
1343 struct type *saved_type = type;
1345 struct objfile *objfile;
1347 CHECK_TYPEDEF (type);
1349 name = type_name_no_tag (type);
1353 name = type_name_no_tag (saved_type);
1354 objfile = TYPE_OBJFILE (saved_type);
1355 error (_("Invalid anonymous type %s [in module %s], GCC PR debug/47510 bug?"),
1356 name ? name : "<anonymous>",
1357 objfile ? objfile_name (objfile) : "<arch>");
1360 /* Lookup a typedef or primitive type named NAME, visible in lexical
1361 block BLOCK. If NOERR is nonzero, return zero if NAME is not
1362 suitably defined. */
1365 lookup_typename (const struct language_defn *language,
1366 struct gdbarch *gdbarch, const char *name,
1367 const struct block *block, int noerr)
1372 sym = lookup_symbol_in_language (name, block, VAR_DOMAIN,
1373 language->la_language, NULL);
1374 if (sym != NULL && SYMBOL_CLASS (sym) == LOC_TYPEDEF)
1375 return SYMBOL_TYPE (sym);
1379 error (_("No type named %s."), name);
1383 lookup_unsigned_typename (const struct language_defn *language,
1384 struct gdbarch *gdbarch, const char *name)
1386 char *uns = alloca (strlen (name) + 10);
1388 strcpy (uns, "unsigned ");
1389 strcpy (uns + 9, name);
1390 return lookup_typename (language, gdbarch, uns, (struct block *) NULL, 0);
1394 lookup_signed_typename (const struct language_defn *language,
1395 struct gdbarch *gdbarch, const char *name)
1398 char *uns = alloca (strlen (name) + 8);
1400 strcpy (uns, "signed ");
1401 strcpy (uns + 7, name);
1402 t = lookup_typename (language, gdbarch, uns, (struct block *) NULL, 1);
1403 /* If we don't find "signed FOO" just try again with plain "FOO". */
1406 return lookup_typename (language, gdbarch, name, (struct block *) NULL, 0);
1409 /* Lookup a structure type named "struct NAME",
1410 visible in lexical block BLOCK. */
1413 lookup_struct (const char *name, const struct block *block)
1417 sym = lookup_symbol (name, block, STRUCT_DOMAIN, 0);
1421 error (_("No struct type named %s."), name);
1423 if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_STRUCT)
1425 error (_("This context has class, union or enum %s, not a struct."),
1428 return (SYMBOL_TYPE (sym));
1431 /* Lookup a union type named "union NAME",
1432 visible in lexical block BLOCK. */
1435 lookup_union (const char *name, const struct block *block)
1440 sym = lookup_symbol (name, block, STRUCT_DOMAIN, 0);
1443 error (_("No union type named %s."), name);
1445 t = SYMBOL_TYPE (sym);
1447 if (TYPE_CODE (t) == TYPE_CODE_UNION)
1450 /* If we get here, it's not a union. */
1451 error (_("This context has class, struct or enum %s, not a union."),
1455 /* Lookup an enum type named "enum NAME",
1456 visible in lexical block BLOCK. */
1459 lookup_enum (const char *name, const struct block *block)
1463 sym = lookup_symbol (name, block, STRUCT_DOMAIN, 0);
1466 error (_("No enum type named %s."), name);
1468 if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_ENUM)
1470 error (_("This context has class, struct or union %s, not an enum."),
1473 return (SYMBOL_TYPE (sym));
1476 /* Lookup a template type named "template NAME<TYPE>",
1477 visible in lexical block BLOCK. */
1480 lookup_template_type (char *name, struct type *type,
1481 const struct block *block)
1484 char *nam = (char *)
1485 alloca (strlen (name) + strlen (TYPE_NAME (type)) + 4);
1489 strcat (nam, TYPE_NAME (type));
1490 strcat (nam, " >"); /* FIXME, extra space still introduced in gcc? */
1492 sym = lookup_symbol (nam, block, VAR_DOMAIN, 0);
1496 error (_("No template type named %s."), name);
1498 if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_STRUCT)
1500 error (_("This context has class, union or enum %s, not a struct."),
1503 return (SYMBOL_TYPE (sym));
1506 /* Given a type TYPE, lookup the type of the component of type named
1509 TYPE can be either a struct or union, or a pointer or reference to
1510 a struct or union. If it is a pointer or reference, its target
1511 type is automatically used. Thus '.' and '->' are interchangable,
1512 as specified for the definitions of the expression element types
1513 STRUCTOP_STRUCT and STRUCTOP_PTR.
1515 If NOERR is nonzero, return zero if NAME is not suitably defined.
1516 If NAME is the name of a baseclass type, return that type. */
1519 lookup_struct_elt_type (struct type *type, const char *name, int noerr)
1526 CHECK_TYPEDEF (type);
1527 if (TYPE_CODE (type) != TYPE_CODE_PTR
1528 && TYPE_CODE (type) != TYPE_CODE_REF)
1530 type = TYPE_TARGET_TYPE (type);
1533 if (TYPE_CODE (type) != TYPE_CODE_STRUCT
1534 && TYPE_CODE (type) != TYPE_CODE_UNION)
1536 type_name = type_to_string (type);
1537 make_cleanup (xfree, type_name);
1538 error (_("Type %s is not a structure or union type."), type_name);
1542 /* FIXME: This change put in by Michael seems incorrect for the case
1543 where the structure tag name is the same as the member name.
1544 I.e. when doing "ptype bell->bar" for "struct foo { int bar; int
1545 foo; } bell;" Disabled by fnf. */
1549 type_name = type_name_no_tag (type);
1550 if (type_name != NULL && strcmp (type_name, name) == 0)
1555 for (i = TYPE_NFIELDS (type) - 1; i >= TYPE_N_BASECLASSES (type); i--)
1557 const char *t_field_name = TYPE_FIELD_NAME (type, i);
1559 if (t_field_name && (strcmp_iw (t_field_name, name) == 0))
1561 return TYPE_FIELD_TYPE (type, i);
1563 else if (!t_field_name || *t_field_name == '\0')
1565 struct type *subtype
1566 = lookup_struct_elt_type (TYPE_FIELD_TYPE (type, i), name, 1);
1568 if (subtype != NULL)
1573 /* OK, it's not in this class. Recursively check the baseclasses. */
1574 for (i = TYPE_N_BASECLASSES (type) - 1; i >= 0; i--)
1578 t = lookup_struct_elt_type (TYPE_BASECLASS (type, i), name, 1);
1590 type_name = type_to_string (type);
1591 make_cleanup (xfree, type_name);
1592 error (_("Type %s has no component named %s."), type_name, name);
1595 /* Store in *MAX the largest number representable by unsigned integer type
1599 get_unsigned_type_max (struct type *type, ULONGEST *max)
1603 CHECK_TYPEDEF (type);
1604 gdb_assert (TYPE_CODE (type) == TYPE_CODE_INT && TYPE_UNSIGNED (type));
1605 gdb_assert (TYPE_LENGTH (type) <= sizeof (ULONGEST));
1607 /* Written this way to avoid overflow. */
1608 n = TYPE_LENGTH (type) * TARGET_CHAR_BIT;
1609 *max = ((((ULONGEST) 1 << (n - 1)) - 1) << 1) | 1;
1612 /* Store in *MIN, *MAX the smallest and largest numbers representable by
1613 signed integer type TYPE. */
1616 get_signed_type_minmax (struct type *type, LONGEST *min, LONGEST *max)
1620 CHECK_TYPEDEF (type);
1621 gdb_assert (TYPE_CODE (type) == TYPE_CODE_INT && !TYPE_UNSIGNED (type));
1622 gdb_assert (TYPE_LENGTH (type) <= sizeof (LONGEST));
1624 n = TYPE_LENGTH (type) * TARGET_CHAR_BIT;
1625 *min = -((ULONGEST) 1 << (n - 1));
1626 *max = ((ULONGEST) 1 << (n - 1)) - 1;
1629 /* Internal routine called by TYPE_VPTR_FIELDNO to return the value of
1630 cplus_stuff.vptr_fieldno.
1632 cplus_stuff is initialized to cplus_struct_default which does not
1633 set vptr_fieldno to -1 for portability reasons (IWBN to use C99
1634 designated initializers). We cope with that here. */
1637 internal_type_vptr_fieldno (struct type *type)
1639 CHECK_TYPEDEF (type);
1640 gdb_assert (TYPE_CODE (type) == TYPE_CODE_STRUCT
1641 || TYPE_CODE (type) == TYPE_CODE_UNION);
1642 if (!HAVE_CPLUS_STRUCT (type))
1644 return TYPE_RAW_CPLUS_SPECIFIC (type)->vptr_fieldno;
1647 /* Set the value of cplus_stuff.vptr_fieldno. */
1650 set_type_vptr_fieldno (struct type *type, int fieldno)
1652 CHECK_TYPEDEF (type);
1653 gdb_assert (TYPE_CODE (type) == TYPE_CODE_STRUCT
1654 || TYPE_CODE (type) == TYPE_CODE_UNION);
1655 if (!HAVE_CPLUS_STRUCT (type))
1656 ALLOCATE_CPLUS_STRUCT_TYPE (type);
1657 TYPE_RAW_CPLUS_SPECIFIC (type)->vptr_fieldno = fieldno;
1660 /* Internal routine called by TYPE_VPTR_BASETYPE to return the value of
1661 cplus_stuff.vptr_basetype. */
1664 internal_type_vptr_basetype (struct type *type)
1666 CHECK_TYPEDEF (type);
1667 gdb_assert (TYPE_CODE (type) == TYPE_CODE_STRUCT
1668 || TYPE_CODE (type) == TYPE_CODE_UNION);
1669 gdb_assert (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_CPLUS_STUFF);
1670 return TYPE_RAW_CPLUS_SPECIFIC (type)->vptr_basetype;
1673 /* Set the value of cplus_stuff.vptr_basetype. */
1676 set_type_vptr_basetype (struct type *type, struct type *basetype)
1678 CHECK_TYPEDEF (type);
1679 gdb_assert (TYPE_CODE (type) == TYPE_CODE_STRUCT
1680 || TYPE_CODE (type) == TYPE_CODE_UNION);
1681 if (!HAVE_CPLUS_STRUCT (type))
1682 ALLOCATE_CPLUS_STRUCT_TYPE (type);
1683 TYPE_RAW_CPLUS_SPECIFIC (type)->vptr_basetype = basetype;
1686 /* Lookup the vptr basetype/fieldno values for TYPE.
1687 If found store vptr_basetype in *BASETYPEP if non-NULL, and return
1688 vptr_fieldno. Also, if found and basetype is from the same objfile,
1690 If not found, return -1 and ignore BASETYPEP.
1691 Callers should be aware that in some cases (for example,
1692 the type or one of its baseclasses is a stub type and we are
1693 debugging a .o file, or the compiler uses DWARF-2 and is not GCC),
1694 this function will not be able to find the
1695 virtual function table pointer, and vptr_fieldno will remain -1 and
1696 vptr_basetype will remain NULL or incomplete. */
1699 get_vptr_fieldno (struct type *type, struct type **basetypep)
1701 CHECK_TYPEDEF (type);
1703 if (TYPE_VPTR_FIELDNO (type) < 0)
1707 /* We must start at zero in case the first (and only) baseclass
1708 is virtual (and hence we cannot share the table pointer). */
1709 for (i = 0; i < TYPE_N_BASECLASSES (type); i++)
1711 struct type *baseclass = check_typedef (TYPE_BASECLASS (type, i));
1713 struct type *basetype;
1715 fieldno = get_vptr_fieldno (baseclass, &basetype);
1718 /* If the type comes from a different objfile we can't cache
1719 it, it may have a different lifetime. PR 2384 */
1720 if (TYPE_OBJFILE (type) == TYPE_OBJFILE (basetype))
1722 set_type_vptr_fieldno (type, fieldno);
1723 set_type_vptr_basetype (type, basetype);
1726 *basetypep = basetype;
1737 *basetypep = TYPE_VPTR_BASETYPE (type);
1738 return TYPE_VPTR_FIELDNO (type);
1743 stub_noname_complaint (void)
1745 complaint (&symfile_complaints, _("stub type has NULL name"));
1748 /* Worker for is_dynamic_type. */
1751 is_dynamic_type_internal (struct type *type, int top_level)
1753 type = check_typedef (type);
1755 /* We only want to recognize references at the outermost level. */
1756 if (top_level && TYPE_CODE (type) == TYPE_CODE_REF)
1757 type = check_typedef (TYPE_TARGET_TYPE (type));
1759 /* Types that have a dynamic TYPE_DATA_LOCATION are considered
1760 dynamic, even if the type itself is statically defined.
1761 From a user's point of view, this may appear counter-intuitive;
1762 but it makes sense in this context, because the point is to determine
1763 whether any part of the type needs to be resolved before it can
1765 if (TYPE_DATA_LOCATION (type) != NULL
1766 && (TYPE_DATA_LOCATION_KIND (type) == PROP_LOCEXPR
1767 || TYPE_DATA_LOCATION_KIND (type) == PROP_LOCLIST))
1770 switch (TYPE_CODE (type))
1772 case TYPE_CODE_RANGE:
1774 /* A range type is obviously dynamic if it has at least one
1775 dynamic bound. But also consider the range type to be
1776 dynamic when its subtype is dynamic, even if the bounds
1777 of the range type are static. It allows us to assume that
1778 the subtype of a static range type is also static. */
1779 return (!has_static_range (TYPE_RANGE_DATA (type))
1780 || is_dynamic_type_internal (TYPE_TARGET_TYPE (type), 0));
1783 case TYPE_CODE_ARRAY:
1785 gdb_assert (TYPE_NFIELDS (type) == 1);
1787 /* The array is dynamic if either the bounds are dynamic,
1788 or the elements it contains have a dynamic contents. */
1789 if (is_dynamic_type_internal (TYPE_INDEX_TYPE (type), 0))
1791 return is_dynamic_type_internal (TYPE_TARGET_TYPE (type), 0);
1794 case TYPE_CODE_STRUCT:
1795 case TYPE_CODE_UNION:
1799 for (i = 0; i < TYPE_NFIELDS (type); ++i)
1800 if (!field_is_static (&TYPE_FIELD (type, i))
1801 && is_dynamic_type_internal (TYPE_FIELD_TYPE (type, i), 0))
1810 /* See gdbtypes.h. */
1813 is_dynamic_type (struct type *type)
1815 return is_dynamic_type_internal (type, 1);
1818 static struct type *resolve_dynamic_type_internal
1819 (struct type *type, struct property_addr_info *addr_stack, int top_level);
1821 /* Given a dynamic range type (dyn_range_type) and a stack of
1822 struct property_addr_info elements, return a static version
1825 static struct type *
1826 resolve_dynamic_range (struct type *dyn_range_type,
1827 struct property_addr_info *addr_stack)
1830 struct type *static_range_type, *static_target_type;
1831 const struct dynamic_prop *prop;
1832 const struct dwarf2_locexpr_baton *baton;
1833 struct dynamic_prop low_bound, high_bound;
1835 gdb_assert (TYPE_CODE (dyn_range_type) == TYPE_CODE_RANGE);
1837 prop = &TYPE_RANGE_DATA (dyn_range_type)->low;
1838 if (dwarf2_evaluate_property (prop, addr_stack, &value))
1840 low_bound.kind = PROP_CONST;
1841 low_bound.data.const_val = value;
1845 low_bound.kind = PROP_UNDEFINED;
1846 low_bound.data.const_val = 0;
1849 prop = &TYPE_RANGE_DATA (dyn_range_type)->high;
1850 if (dwarf2_evaluate_property (prop, addr_stack, &value))
1852 high_bound.kind = PROP_CONST;
1853 high_bound.data.const_val = value;
1855 if (TYPE_RANGE_DATA (dyn_range_type)->flag_upper_bound_is_count)
1856 high_bound.data.const_val
1857 = low_bound.data.const_val + high_bound.data.const_val - 1;
1861 high_bound.kind = PROP_UNDEFINED;
1862 high_bound.data.const_val = 0;
1866 = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (dyn_range_type),
1868 static_range_type = create_range_type (copy_type (dyn_range_type),
1870 &low_bound, &high_bound);
1871 TYPE_RANGE_DATA (static_range_type)->flag_bound_evaluated = 1;
1872 return static_range_type;
1875 /* Resolves dynamic bound values of an array type TYPE to static ones.
1876 ADDR_STACK is a stack of struct property_addr_info to be used
1877 if needed during the dynamic resolution. */
1879 static struct type *
1880 resolve_dynamic_array (struct type *type,
1881 struct property_addr_info *addr_stack)
1884 struct type *elt_type;
1885 struct type *range_type;
1886 struct type *ary_dim;
1888 gdb_assert (TYPE_CODE (type) == TYPE_CODE_ARRAY);
1891 range_type = check_typedef (TYPE_INDEX_TYPE (elt_type));
1892 range_type = resolve_dynamic_range (range_type, addr_stack);
1894 ary_dim = check_typedef (TYPE_TARGET_TYPE (elt_type));
1896 if (ary_dim != NULL && TYPE_CODE (ary_dim) == TYPE_CODE_ARRAY)
1897 elt_type = resolve_dynamic_array (TYPE_TARGET_TYPE (type), addr_stack);
1899 elt_type = TYPE_TARGET_TYPE (type);
1901 return create_array_type (copy_type (type),
1906 /* Resolve dynamic bounds of members of the union TYPE to static
1907 bounds. ADDR_STACK is a stack of struct property_addr_info
1908 to be used if needed during the dynamic resolution. */
1910 static struct type *
1911 resolve_dynamic_union (struct type *type,
1912 struct property_addr_info *addr_stack)
1914 struct type *resolved_type;
1916 unsigned int max_len = 0;
1918 gdb_assert (TYPE_CODE (type) == TYPE_CODE_UNION);
1920 resolved_type = copy_type (type);
1921 TYPE_FIELDS (resolved_type)
1922 = TYPE_ALLOC (resolved_type,
1923 TYPE_NFIELDS (resolved_type) * sizeof (struct field));
1924 memcpy (TYPE_FIELDS (resolved_type),
1926 TYPE_NFIELDS (resolved_type) * sizeof (struct field));
1927 for (i = 0; i < TYPE_NFIELDS (resolved_type); ++i)
1931 if (field_is_static (&TYPE_FIELD (type, i)))
1934 t = resolve_dynamic_type_internal (TYPE_FIELD_TYPE (resolved_type, i),
1936 TYPE_FIELD_TYPE (resolved_type, i) = t;
1937 if (TYPE_LENGTH (t) > max_len)
1938 max_len = TYPE_LENGTH (t);
1941 TYPE_LENGTH (resolved_type) = max_len;
1942 return resolved_type;
1945 /* Resolve dynamic bounds of members of the struct TYPE to static
1946 bounds. ADDR_STACK is a stack of struct property_addr_info to
1947 be used if needed during the dynamic resolution. */
1949 static struct type *
1950 resolve_dynamic_struct (struct type *type,
1951 struct property_addr_info *addr_stack)
1953 struct type *resolved_type;
1955 unsigned resolved_type_bit_length = 0;
1957 gdb_assert (TYPE_CODE (type) == TYPE_CODE_STRUCT);
1958 gdb_assert (TYPE_NFIELDS (type) > 0);
1960 resolved_type = copy_type (type);
1961 TYPE_FIELDS (resolved_type)
1962 = TYPE_ALLOC (resolved_type,
1963 TYPE_NFIELDS (resolved_type) * sizeof (struct field));
1964 memcpy (TYPE_FIELDS (resolved_type),
1966 TYPE_NFIELDS (resolved_type) * sizeof (struct field));
1967 for (i = 0; i < TYPE_NFIELDS (resolved_type); ++i)
1969 unsigned new_bit_length;
1970 struct property_addr_info pinfo;
1972 if (field_is_static (&TYPE_FIELD (type, i)))
1975 /* As we know this field is not a static field, the field's
1976 field_loc_kind should be FIELD_LOC_KIND_BITPOS. Verify
1977 this is the case, but only trigger a simple error rather
1978 than an internal error if that fails. While failing
1979 that verification indicates a bug in our code, the error
1980 is not severe enough to suggest to the user he stops
1981 his debugging session because of it. */
1982 if (TYPE_FIELD_LOC_KIND (type, i) != FIELD_LOC_KIND_BITPOS)
1983 error (_("Cannot determine struct field location"
1984 " (invalid location kind)"));
1986 pinfo.type = check_typedef (TYPE_FIELD_TYPE (type, i));
1987 pinfo.addr = addr_stack->addr;
1988 pinfo.next = addr_stack;
1990 TYPE_FIELD_TYPE (resolved_type, i)
1991 = resolve_dynamic_type_internal (TYPE_FIELD_TYPE (resolved_type, i),
1993 gdb_assert (TYPE_FIELD_LOC_KIND (resolved_type, i)
1994 == FIELD_LOC_KIND_BITPOS);
1996 new_bit_length = TYPE_FIELD_BITPOS (resolved_type, i);
1997 if (TYPE_FIELD_BITSIZE (resolved_type, i) != 0)
1998 new_bit_length += TYPE_FIELD_BITSIZE (resolved_type, i);
2000 new_bit_length += (TYPE_LENGTH (TYPE_FIELD_TYPE (resolved_type, i))
2003 /* Normally, we would use the position and size of the last field
2004 to determine the size of the enclosing structure. But GCC seems
2005 to be encoding the position of some fields incorrectly when
2006 the struct contains a dynamic field that is not placed last.
2007 So we compute the struct size based on the field that has
2008 the highest position + size - probably the best we can do. */
2009 if (new_bit_length > resolved_type_bit_length)
2010 resolved_type_bit_length = new_bit_length;
2013 TYPE_LENGTH (resolved_type)
2014 = (resolved_type_bit_length + TARGET_CHAR_BIT - 1) / TARGET_CHAR_BIT;
2016 return resolved_type;
2019 /* Worker for resolved_dynamic_type. */
2021 static struct type *
2022 resolve_dynamic_type_internal (struct type *type,
2023 struct property_addr_info *addr_stack,
2026 struct type *real_type = check_typedef (type);
2027 struct type *resolved_type = type;
2028 const struct dynamic_prop *prop;
2031 if (!is_dynamic_type_internal (real_type, top_level))
2034 if (TYPE_CODE (type) == TYPE_CODE_TYPEDEF)
2036 resolved_type = copy_type (type);
2037 TYPE_TARGET_TYPE (resolved_type)
2038 = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (type), addr_stack,
2043 /* Before trying to resolve TYPE, make sure it is not a stub. */
2046 switch (TYPE_CODE (type))
2050 struct property_addr_info pinfo;
2052 pinfo.type = check_typedef (TYPE_TARGET_TYPE (type));
2053 pinfo.addr = read_memory_typed_address (addr_stack->addr, type);
2054 pinfo.next = addr_stack;
2056 resolved_type = copy_type (type);
2057 TYPE_TARGET_TYPE (resolved_type)
2058 = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (type),
2063 case TYPE_CODE_ARRAY:
2064 resolved_type = resolve_dynamic_array (type, addr_stack);
2067 case TYPE_CODE_RANGE:
2068 resolved_type = resolve_dynamic_range (type, addr_stack);
2071 case TYPE_CODE_UNION:
2072 resolved_type = resolve_dynamic_union (type, addr_stack);
2075 case TYPE_CODE_STRUCT:
2076 resolved_type = resolve_dynamic_struct (type, addr_stack);
2081 /* Resolve data_location attribute. */
2082 prop = TYPE_DATA_LOCATION (resolved_type);
2083 if (dwarf2_evaluate_property (prop, addr_stack, &value))
2085 TYPE_DATA_LOCATION_ADDR (resolved_type) = value;
2086 TYPE_DATA_LOCATION_KIND (resolved_type) = PROP_CONST;
2089 TYPE_DATA_LOCATION (resolved_type) = NULL;
2091 return resolved_type;
2094 /* See gdbtypes.h */
2097 resolve_dynamic_type (struct type *type, CORE_ADDR addr)
2099 struct property_addr_info pinfo = {check_typedef (type), addr, NULL};
2101 return resolve_dynamic_type_internal (type, &pinfo, 1);
2104 /* Find the real type of TYPE. This function returns the real type,
2105 after removing all layers of typedefs, and completing opaque or stub
2106 types. Completion changes the TYPE argument, but stripping of
2109 Instance flags (e.g. const/volatile) are preserved as typedefs are
2110 stripped. If necessary a new qualified form of the underlying type
2113 NOTE: This will return a typedef if TYPE_TARGET_TYPE for the typedef has
2114 not been computed and we're either in the middle of reading symbols, or
2115 there was no name for the typedef in the debug info.
2117 NOTE: Lookup of opaque types can throw errors for invalid symbol files.
2118 QUITs in the symbol reading code can also throw.
2119 Thus this function can throw an exception.
2121 If TYPE is a TYPE_CODE_TYPEDEF, its length is updated to the length of
2124 If this is a stubbed struct (i.e. declared as struct foo *), see if
2125 we can find a full definition in some other file. If so, copy this
2126 definition, so we can use it in future. There used to be a comment
2127 (but not any code) that if we don't find a full definition, we'd
2128 set a flag so we don't spend time in the future checking the same
2129 type. That would be a mistake, though--we might load in more
2130 symbols which contain a full definition for the type. */
2133 check_typedef (struct type *type)
2135 struct type *orig_type = type;
2136 /* While we're removing typedefs, we don't want to lose qualifiers.
2137 E.g., const/volatile. */
2138 int instance_flags = TYPE_INSTANCE_FLAGS (type);
2142 while (TYPE_CODE (type) == TYPE_CODE_TYPEDEF)
2144 if (!TYPE_TARGET_TYPE (type))
2149 /* It is dangerous to call lookup_symbol if we are currently
2150 reading a symtab. Infinite recursion is one danger. */
2151 if (currently_reading_symtab)
2152 return make_qualified_type (type, instance_flags, NULL);
2154 name = type_name_no_tag (type);
2155 /* FIXME: shouldn't we separately check the TYPE_NAME and
2156 the TYPE_TAG_NAME, and look in STRUCT_DOMAIN and/or
2157 VAR_DOMAIN as appropriate? (this code was written before
2158 TYPE_NAME and TYPE_TAG_NAME were separate). */
2161 stub_noname_complaint ();
2162 return make_qualified_type (type, instance_flags, NULL);
2164 sym = lookup_symbol (name, 0, STRUCT_DOMAIN, 0);
2166 TYPE_TARGET_TYPE (type) = SYMBOL_TYPE (sym);
2167 else /* TYPE_CODE_UNDEF */
2168 TYPE_TARGET_TYPE (type) = alloc_type_arch (get_type_arch (type));
2170 type = TYPE_TARGET_TYPE (type);
2172 /* Preserve the instance flags as we traverse down the typedef chain.
2174 Handling address spaces/classes is nasty, what do we do if there's a
2176 E.g., what if an outer typedef marks the type as class_1 and an inner
2177 typedef marks the type as class_2?
2178 This is the wrong place to do such error checking. We leave it to
2179 the code that created the typedef in the first place to flag the
2180 error. We just pick the outer address space (akin to letting the
2181 outer cast in a chain of casting win), instead of assuming
2182 "it can't happen". */
2184 const int ALL_SPACES = (TYPE_INSTANCE_FLAG_CODE_SPACE
2185 | TYPE_INSTANCE_FLAG_DATA_SPACE);
2186 const int ALL_CLASSES = TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL;
2187 int new_instance_flags = TYPE_INSTANCE_FLAGS (type);
2189 /* Treat code vs data spaces and address classes separately. */
2190 if ((instance_flags & ALL_SPACES) != 0)
2191 new_instance_flags &= ~ALL_SPACES;
2192 if ((instance_flags & ALL_CLASSES) != 0)
2193 new_instance_flags &= ~ALL_CLASSES;
2195 instance_flags |= new_instance_flags;
2199 /* If this is a struct/class/union with no fields, then check
2200 whether a full definition exists somewhere else. This is for
2201 systems where a type definition with no fields is issued for such
2202 types, instead of identifying them as stub types in the first
2205 if (TYPE_IS_OPAQUE (type)
2206 && opaque_type_resolution
2207 && !currently_reading_symtab)
2209 const char *name = type_name_no_tag (type);
2210 struct type *newtype;
2214 stub_noname_complaint ();
2215 return make_qualified_type (type, instance_flags, NULL);
2217 newtype = lookup_transparent_type (name);
2221 /* If the resolved type and the stub are in the same
2222 objfile, then replace the stub type with the real deal.
2223 But if they're in separate objfiles, leave the stub
2224 alone; we'll just look up the transparent type every time
2225 we call check_typedef. We can't create pointers between
2226 types allocated to different objfiles, since they may
2227 have different lifetimes. Trying to copy NEWTYPE over to
2228 TYPE's objfile is pointless, too, since you'll have to
2229 move over any other types NEWTYPE refers to, which could
2230 be an unbounded amount of stuff. */
2231 if (TYPE_OBJFILE (newtype) == TYPE_OBJFILE (type))
2232 type = make_qualified_type (newtype,
2233 TYPE_INSTANCE_FLAGS (type),
2239 /* Otherwise, rely on the stub flag being set for opaque/stubbed
2241 else if (TYPE_STUB (type) && !currently_reading_symtab)
2243 const char *name = type_name_no_tag (type);
2244 /* FIXME: shouldn't we separately check the TYPE_NAME and the
2245 TYPE_TAG_NAME, and look in STRUCT_DOMAIN and/or VAR_DOMAIN
2246 as appropriate? (this code was written before TYPE_NAME and
2247 TYPE_TAG_NAME were separate). */
2252 stub_noname_complaint ();
2253 return make_qualified_type (type, instance_flags, NULL);
2255 sym = lookup_symbol (name, 0, STRUCT_DOMAIN, 0);
2258 /* Same as above for opaque types, we can replace the stub
2259 with the complete type only if they are in the same
2261 if (TYPE_OBJFILE (SYMBOL_TYPE(sym)) == TYPE_OBJFILE (type))
2262 type = make_qualified_type (SYMBOL_TYPE (sym),
2263 TYPE_INSTANCE_FLAGS (type),
2266 type = SYMBOL_TYPE (sym);
2270 if (TYPE_TARGET_STUB (type))
2272 struct type *range_type;
2273 struct type *target_type = check_typedef (TYPE_TARGET_TYPE (type));
2275 if (TYPE_STUB (target_type) || TYPE_TARGET_STUB (target_type))
2277 /* Nothing we can do. */
2279 else if (TYPE_CODE (type) == TYPE_CODE_RANGE)
2281 TYPE_LENGTH (type) = TYPE_LENGTH (target_type);
2282 TYPE_TARGET_STUB (type) = 0;
2286 type = make_qualified_type (type, instance_flags, NULL);
2288 /* Cache TYPE_LENGTH for future use. */
2289 TYPE_LENGTH (orig_type) = TYPE_LENGTH (type);
2294 /* Parse a type expression in the string [P..P+LENGTH). If an error
2295 occurs, silently return a void type. */
2297 static struct type *
2298 safe_parse_type (struct gdbarch *gdbarch, char *p, int length)
2300 struct ui_file *saved_gdb_stderr;
2301 struct type *type = NULL; /* Initialize to keep gcc happy. */
2303 /* Suppress error messages. */
2304 saved_gdb_stderr = gdb_stderr;
2305 gdb_stderr = ui_file_new ();
2307 /* Call parse_and_eval_type() without fear of longjmp()s. */
2310 type = parse_and_eval_type (p, length);
2312 CATCH (except, RETURN_MASK_ERROR)
2314 type = builtin_type (gdbarch)->builtin_void;
2318 /* Stop suppressing error messages. */
2319 ui_file_delete (gdb_stderr);
2320 gdb_stderr = saved_gdb_stderr;
2325 /* Ugly hack to convert method stubs into method types.
2327 He ain't kiddin'. This demangles the name of the method into a
2328 string including argument types, parses out each argument type,
2329 generates a string casting a zero to that type, evaluates the
2330 string, and stuffs the resulting type into an argtype vector!!!
2331 Then it knows the type of the whole function (including argument
2332 types for overloading), which info used to be in the stab's but was
2333 removed to hack back the space required for them. */
2336 check_stub_method (struct type *type, int method_id, int signature_id)
2338 struct gdbarch *gdbarch = get_type_arch (type);
2340 char *mangled_name = gdb_mangle_name (type, method_id, signature_id);
2341 char *demangled_name = gdb_demangle (mangled_name,
2342 DMGL_PARAMS | DMGL_ANSI);
2343 char *argtypetext, *p;
2344 int depth = 0, argcount = 1;
2345 struct field *argtypes;
2348 /* Make sure we got back a function string that we can use. */
2350 p = strchr (demangled_name, '(');
2354 if (demangled_name == NULL || p == NULL)
2355 error (_("Internal: Cannot demangle mangled name `%s'."),
2358 /* Now, read in the parameters that define this type. */
2363 if (*p == '(' || *p == '<')
2367 else if (*p == ')' || *p == '>')
2371 else if (*p == ',' && depth == 0)
2379 /* If we read one argument and it was ``void'', don't count it. */
2380 if (startswith (argtypetext, "(void)"))
2383 /* We need one extra slot, for the THIS pointer. */
2385 argtypes = (struct field *)
2386 TYPE_ALLOC (type, (argcount + 1) * sizeof (struct field));
2389 /* Add THIS pointer for non-static methods. */
2390 f = TYPE_FN_FIELDLIST1 (type, method_id);
2391 if (TYPE_FN_FIELD_STATIC_P (f, signature_id))
2395 argtypes[0].type = lookup_pointer_type (type);
2399 if (*p != ')') /* () means no args, skip while. */
2404 if (depth <= 0 && (*p == ',' || *p == ')'))
2406 /* Avoid parsing of ellipsis, they will be handled below.
2407 Also avoid ``void'' as above. */
2408 if (strncmp (argtypetext, "...", p - argtypetext) != 0
2409 && strncmp (argtypetext, "void", p - argtypetext) != 0)
2411 argtypes[argcount].type =
2412 safe_parse_type (gdbarch, argtypetext, p - argtypetext);
2415 argtypetext = p + 1;
2418 if (*p == '(' || *p == '<')
2422 else if (*p == ')' || *p == '>')
2431 TYPE_FN_FIELD_PHYSNAME (f, signature_id) = mangled_name;
2433 /* Now update the old "stub" type into a real type. */
2434 mtype = TYPE_FN_FIELD_TYPE (f, signature_id);
2435 /* MTYPE may currently be a function (TYPE_CODE_FUNC).
2436 We want a method (TYPE_CODE_METHOD). */
2437 smash_to_method_type (mtype, type, TYPE_TARGET_TYPE (mtype),
2438 argtypes, argcount, p[-2] == '.');
2439 TYPE_STUB (mtype) = 0;
2440 TYPE_FN_FIELD_STUB (f, signature_id) = 0;
2442 xfree (demangled_name);
2445 /* This is the external interface to check_stub_method, above. This
2446 function unstubs all of the signatures for TYPE's METHOD_ID method
2447 name. After calling this function TYPE_FN_FIELD_STUB will be
2448 cleared for each signature and TYPE_FN_FIELDLIST_NAME will be
2451 This function unfortunately can not die until stabs do. */
2454 check_stub_method_group (struct type *type, int method_id)
2456 int len = TYPE_FN_FIELDLIST_LENGTH (type, method_id);
2457 struct fn_field *f = TYPE_FN_FIELDLIST1 (type, method_id);
2458 int j, found_stub = 0;
2460 for (j = 0; j < len; j++)
2461 if (TYPE_FN_FIELD_STUB (f, j))
2464 check_stub_method (type, method_id, j);
2467 /* GNU v3 methods with incorrect names were corrected when we read
2468 in type information, because it was cheaper to do it then. The
2469 only GNU v2 methods with incorrect method names are operators and
2470 destructors; destructors were also corrected when we read in type
2473 Therefore the only thing we need to handle here are v2 operator
2475 if (found_stub && !startswith (TYPE_FN_FIELD_PHYSNAME (f, 0), "_Z"))
2478 char dem_opname[256];
2480 ret = cplus_demangle_opname (TYPE_FN_FIELDLIST_NAME (type,
2482 dem_opname, DMGL_ANSI);
2484 ret = cplus_demangle_opname (TYPE_FN_FIELDLIST_NAME (type,
2488 TYPE_FN_FIELDLIST_NAME (type, method_id) = xstrdup (dem_opname);
2492 /* Ensure it is in .rodata (if available) by workarounding GCC PR 44690. */
2493 const struct cplus_struct_type cplus_struct_default = { };
2496 allocate_cplus_struct_type (struct type *type)
2498 if (HAVE_CPLUS_STRUCT (type))
2499 /* Structure was already allocated. Nothing more to do. */
2502 TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_CPLUS_STUFF;
2503 TYPE_RAW_CPLUS_SPECIFIC (type) = (struct cplus_struct_type *)
2504 TYPE_ALLOC (type, sizeof (struct cplus_struct_type));
2505 *(TYPE_RAW_CPLUS_SPECIFIC (type)) = cplus_struct_default;
2506 set_type_vptr_fieldno (type, -1);
2509 const struct gnat_aux_type gnat_aux_default =
2512 /* Set the TYPE's type-specific kind to TYPE_SPECIFIC_GNAT_STUFF,
2513 and allocate the associated gnat-specific data. The gnat-specific
2514 data is also initialized to gnat_aux_default. */
2517 allocate_gnat_aux_type (struct type *type)
2519 TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_GNAT_STUFF;
2520 TYPE_GNAT_SPECIFIC (type) = (struct gnat_aux_type *)
2521 TYPE_ALLOC (type, sizeof (struct gnat_aux_type));
2522 *(TYPE_GNAT_SPECIFIC (type)) = gnat_aux_default;
2525 /* Helper function to initialize the standard scalar types.
2527 If NAME is non-NULL, then it is used to initialize the type name.
2528 Note that NAME is not copied; it is required to have a lifetime at
2529 least as long as OBJFILE. */
2532 init_type (enum type_code code, int length, int flags,
2533 const char *name, struct objfile *objfile)
2537 type = alloc_type (objfile);
2538 TYPE_CODE (type) = code;
2539 TYPE_LENGTH (type) = length;
2541 gdb_assert (!(flags & (TYPE_FLAG_MIN - 1)));
2542 if (flags & TYPE_FLAG_UNSIGNED)
2543 TYPE_UNSIGNED (type) = 1;
2544 if (flags & TYPE_FLAG_NOSIGN)
2545 TYPE_NOSIGN (type) = 1;
2546 if (flags & TYPE_FLAG_STUB)
2547 TYPE_STUB (type) = 1;
2548 if (flags & TYPE_FLAG_TARGET_STUB)
2549 TYPE_TARGET_STUB (type) = 1;
2550 if (flags & TYPE_FLAG_STATIC)
2551 TYPE_STATIC (type) = 1;
2552 if (flags & TYPE_FLAG_PROTOTYPED)
2553 TYPE_PROTOTYPED (type) = 1;
2554 if (flags & TYPE_FLAG_INCOMPLETE)
2555 TYPE_INCOMPLETE (type) = 1;
2556 if (flags & TYPE_FLAG_VARARGS)
2557 TYPE_VARARGS (type) = 1;
2558 if (flags & TYPE_FLAG_VECTOR)
2559 TYPE_VECTOR (type) = 1;
2560 if (flags & TYPE_FLAG_STUB_SUPPORTED)
2561 TYPE_STUB_SUPPORTED (type) = 1;
2562 if (flags & TYPE_FLAG_FIXED_INSTANCE)
2563 TYPE_FIXED_INSTANCE (type) = 1;
2564 if (flags & TYPE_FLAG_GNU_IFUNC)
2565 TYPE_GNU_IFUNC (type) = 1;
2567 TYPE_NAME (type) = name;
2571 if (name && strcmp (name, "char") == 0)
2572 TYPE_NOSIGN (type) = 1;
2576 case TYPE_CODE_STRUCT:
2577 case TYPE_CODE_UNION:
2578 case TYPE_CODE_NAMESPACE:
2579 INIT_CPLUS_SPECIFIC (type);
2582 TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_FLOATFORMAT;
2584 case TYPE_CODE_FUNC:
2585 INIT_FUNC_SPECIFIC (type);
2591 /* Queries on types. */
2594 can_dereference (struct type *t)
2596 /* FIXME: Should we return true for references as well as
2601 && TYPE_CODE (t) == TYPE_CODE_PTR
2602 && TYPE_CODE (TYPE_TARGET_TYPE (t)) != TYPE_CODE_VOID);
2606 is_integral_type (struct type *t)
2611 && ((TYPE_CODE (t) == TYPE_CODE_INT)
2612 || (TYPE_CODE (t) == TYPE_CODE_ENUM)
2613 || (TYPE_CODE (t) == TYPE_CODE_FLAGS)
2614 || (TYPE_CODE (t) == TYPE_CODE_CHAR)
2615 || (TYPE_CODE (t) == TYPE_CODE_RANGE)
2616 || (TYPE_CODE (t) == TYPE_CODE_BOOL)));
2619 /* Return true if TYPE is scalar. */
2622 is_scalar_type (struct type *type)
2624 CHECK_TYPEDEF (type);
2626 switch (TYPE_CODE (type))
2628 case TYPE_CODE_ARRAY:
2629 case TYPE_CODE_STRUCT:
2630 case TYPE_CODE_UNION:
2632 case TYPE_CODE_STRING:
2639 /* Return true if T is scalar, or a composite type which in practice has
2640 the memory layout of a scalar type. E.g., an array or struct with only
2641 one scalar element inside it, or a union with only scalar elements. */
2644 is_scalar_type_recursive (struct type *t)
2648 if (is_scalar_type (t))
2650 /* Are we dealing with an array or string of known dimensions? */
2651 else if ((TYPE_CODE (t) == TYPE_CODE_ARRAY
2652 || TYPE_CODE (t) == TYPE_CODE_STRING) && TYPE_NFIELDS (t) == 1
2653 && TYPE_CODE (TYPE_INDEX_TYPE (t)) == TYPE_CODE_RANGE)
2655 LONGEST low_bound, high_bound;
2656 struct type *elt_type = check_typedef (TYPE_TARGET_TYPE (t));
2658 get_discrete_bounds (TYPE_INDEX_TYPE (t), &low_bound, &high_bound);
2660 return high_bound == low_bound && is_scalar_type_recursive (elt_type);
2662 /* Are we dealing with a struct with one element? */
2663 else if (TYPE_CODE (t) == TYPE_CODE_STRUCT && TYPE_NFIELDS (t) == 1)
2664 return is_scalar_type_recursive (TYPE_FIELD_TYPE (t, 0));
2665 else if (TYPE_CODE (t) == TYPE_CODE_UNION)
2667 int i, n = TYPE_NFIELDS (t);
2669 /* If all elements of the union are scalar, then the union is scalar. */
2670 for (i = 0; i < n; i++)
2671 if (!is_scalar_type_recursive (TYPE_FIELD_TYPE (t, i)))
2680 /* Return true is T is a class or a union. False otherwise. */
2683 class_or_union_p (const struct type *t)
2685 return (TYPE_CODE (t) == TYPE_CODE_STRUCT
2686 || TYPE_CODE (t) == TYPE_CODE_UNION);
2689 /* A helper function which returns true if types A and B represent the
2690 "same" class type. This is true if the types have the same main
2691 type, or the same name. */
2694 class_types_same_p (const struct type *a, const struct type *b)
2696 return (TYPE_MAIN_TYPE (a) == TYPE_MAIN_TYPE (b)
2697 || (TYPE_NAME (a) && TYPE_NAME (b)
2698 && !strcmp (TYPE_NAME (a), TYPE_NAME (b))));
2701 /* If BASE is an ancestor of DCLASS return the distance between them.
2702 otherwise return -1;
2706 class B: public A {};
2707 class C: public B {};
2710 distance_to_ancestor (A, A, 0) = 0
2711 distance_to_ancestor (A, B, 0) = 1
2712 distance_to_ancestor (A, C, 0) = 2
2713 distance_to_ancestor (A, D, 0) = 3
2715 If PUBLIC is 1 then only public ancestors are considered,
2716 and the function returns the distance only if BASE is a public ancestor
2720 distance_to_ancestor (A, D, 1) = -1. */
2723 distance_to_ancestor (struct type *base, struct type *dclass, int is_public)
2728 CHECK_TYPEDEF (base);
2729 CHECK_TYPEDEF (dclass);
2731 if (class_types_same_p (base, dclass))
2734 for (i = 0; i < TYPE_N_BASECLASSES (dclass); i++)
2736 if (is_public && ! BASETYPE_VIA_PUBLIC (dclass, i))
2739 d = distance_to_ancestor (base, TYPE_BASECLASS (dclass, i), is_public);
2747 /* Check whether BASE is an ancestor or base class or DCLASS
2748 Return 1 if so, and 0 if not.
2749 Note: If BASE and DCLASS are of the same type, this function
2750 will return 1. So for some class A, is_ancestor (A, A) will
2754 is_ancestor (struct type *base, struct type *dclass)
2756 return distance_to_ancestor (base, dclass, 0) >= 0;
2759 /* Like is_ancestor, but only returns true when BASE is a public
2760 ancestor of DCLASS. */
2763 is_public_ancestor (struct type *base, struct type *dclass)
2765 return distance_to_ancestor (base, dclass, 1) >= 0;
2768 /* A helper function for is_unique_ancestor. */
2771 is_unique_ancestor_worker (struct type *base, struct type *dclass,
2773 const gdb_byte *valaddr, int embedded_offset,
2774 CORE_ADDR address, struct value *val)
2778 CHECK_TYPEDEF (base);
2779 CHECK_TYPEDEF (dclass);
2781 for (i = 0; i < TYPE_N_BASECLASSES (dclass) && count < 2; ++i)
2786 iter = check_typedef (TYPE_BASECLASS (dclass, i));
2788 this_offset = baseclass_offset (dclass, i, valaddr, embedded_offset,
2791 if (class_types_same_p (base, iter))
2793 /* If this is the first subclass, set *OFFSET and set count
2794 to 1. Otherwise, if this is at the same offset as
2795 previous instances, do nothing. Otherwise, increment
2799 *offset = this_offset;
2802 else if (this_offset == *offset)
2810 count += is_unique_ancestor_worker (base, iter, offset,
2812 embedded_offset + this_offset,
2819 /* Like is_ancestor, but only returns true if BASE is a unique base
2820 class of the type of VAL. */
2823 is_unique_ancestor (struct type *base, struct value *val)
2827 return is_unique_ancestor_worker (base, value_type (val), &offset,
2828 value_contents_for_printing (val),
2829 value_embedded_offset (val),
2830 value_address (val), val) == 1;
2834 /* Overload resolution. */
2836 /* Return the sum of the rank of A with the rank of B. */
2839 sum_ranks (struct rank a, struct rank b)
2842 c.rank = a.rank + b.rank;
2843 c.subrank = a.subrank + b.subrank;
2847 /* Compare rank A and B and return:
2849 1 if a is better than b
2850 -1 if b is better than a. */
2853 compare_ranks (struct rank a, struct rank b)
2855 if (a.rank == b.rank)
2857 if (a.subrank == b.subrank)
2859 if (a.subrank < b.subrank)
2861 if (a.subrank > b.subrank)
2865 if (a.rank < b.rank)
2868 /* a.rank > b.rank */
2872 /* Functions for overload resolution begin here. */
2874 /* Compare two badness vectors A and B and return the result.
2875 0 => A and B are identical
2876 1 => A and B are incomparable
2877 2 => A is better than B
2878 3 => A is worse than B */
2881 compare_badness (struct badness_vector *a, struct badness_vector *b)
2885 short found_pos = 0; /* any positives in c? */
2886 short found_neg = 0; /* any negatives in c? */
2888 /* differing lengths => incomparable */
2889 if (a->length != b->length)
2892 /* Subtract b from a */
2893 for (i = 0; i < a->length; i++)
2895 tmp = compare_ranks (b->rank[i], a->rank[i]);
2905 return 1; /* incomparable */
2907 return 3; /* A > B */
2913 return 2; /* A < B */
2915 return 0; /* A == B */
2919 /* Rank a function by comparing its parameter types (PARMS, length
2920 NPARMS), to the types of an argument list (ARGS, length NARGS).
2921 Return a pointer to a badness vector. This has NARGS + 1
2924 struct badness_vector *
2925 rank_function (struct type **parms, int nparms,
2926 struct value **args, int nargs)
2929 struct badness_vector *bv;
2930 int min_len = nparms < nargs ? nparms : nargs;
2932 bv = xmalloc (sizeof (struct badness_vector));
2933 bv->length = nargs + 1; /* add 1 for the length-match rank. */
2934 bv->rank = XNEWVEC (struct rank, nargs + 1);
2936 /* First compare the lengths of the supplied lists.
2937 If there is a mismatch, set it to a high value. */
2939 /* pai/1997-06-03 FIXME: when we have debug info about default
2940 arguments and ellipsis parameter lists, we should consider those
2941 and rank the length-match more finely. */
2943 LENGTH_MATCH (bv) = (nargs != nparms)
2944 ? LENGTH_MISMATCH_BADNESS
2945 : EXACT_MATCH_BADNESS;
2947 /* Now rank all the parameters of the candidate function. */
2948 for (i = 1; i <= min_len; i++)
2949 bv->rank[i] = rank_one_type (parms[i - 1], value_type (args[i - 1]),
2952 /* If more arguments than parameters, add dummy entries. */
2953 for (i = min_len + 1; i <= nargs; i++)
2954 bv->rank[i] = TOO_FEW_PARAMS_BADNESS;
2959 /* Compare the names of two integer types, assuming that any sign
2960 qualifiers have been checked already. We do it this way because
2961 there may be an "int" in the name of one of the types. */
2964 integer_types_same_name_p (const char *first, const char *second)
2966 int first_p, second_p;
2968 /* If both are shorts, return 1; if neither is a short, keep
2970 first_p = (strstr (first, "short") != NULL);
2971 second_p = (strstr (second, "short") != NULL);
2972 if (first_p && second_p)
2974 if (first_p || second_p)
2977 /* Likewise for long. */
2978 first_p = (strstr (first, "long") != NULL);
2979 second_p = (strstr (second, "long") != NULL);
2980 if (first_p && second_p)
2982 if (first_p || second_p)
2985 /* Likewise for char. */
2986 first_p = (strstr (first, "char") != NULL);
2987 second_p = (strstr (second, "char") != NULL);
2988 if (first_p && second_p)
2990 if (first_p || second_p)
2993 /* They must both be ints. */
2997 /* Compares type A to type B returns 1 if the represent the same type
3001 types_equal (struct type *a, struct type *b)
3003 /* Identical type pointers. */
3004 /* However, this still doesn't catch all cases of same type for b
3005 and a. The reason is that builtin types are different from
3006 the same ones constructed from the object. */
3010 /* Resolve typedefs */
3011 if (TYPE_CODE (a) == TYPE_CODE_TYPEDEF)
3012 a = check_typedef (a);
3013 if (TYPE_CODE (b) == TYPE_CODE_TYPEDEF)
3014 b = check_typedef (b);
3016 /* If after resolving typedefs a and b are not of the same type
3017 code then they are not equal. */
3018 if (TYPE_CODE (a) != TYPE_CODE (b))
3021 /* If a and b are both pointers types or both reference types then
3022 they are equal of the same type iff the objects they refer to are
3023 of the same type. */
3024 if (TYPE_CODE (a) == TYPE_CODE_PTR
3025 || TYPE_CODE (a) == TYPE_CODE_REF)
3026 return types_equal (TYPE_TARGET_TYPE (a),
3027 TYPE_TARGET_TYPE (b));
3029 /* Well, damnit, if the names are exactly the same, I'll say they
3030 are exactly the same. This happens when we generate method
3031 stubs. The types won't point to the same address, but they
3032 really are the same. */
3034 if (TYPE_NAME (a) && TYPE_NAME (b)
3035 && strcmp (TYPE_NAME (a), TYPE_NAME (b)) == 0)
3038 /* Check if identical after resolving typedefs. */
3042 /* Two function types are equal if their argument and return types
3044 if (TYPE_CODE (a) == TYPE_CODE_FUNC)
3048 if (TYPE_NFIELDS (a) != TYPE_NFIELDS (b))
3051 if (!types_equal (TYPE_TARGET_TYPE (a), TYPE_TARGET_TYPE (b)))
3054 for (i = 0; i < TYPE_NFIELDS (a); ++i)
3055 if (!types_equal (TYPE_FIELD_TYPE (a, i), TYPE_FIELD_TYPE (b, i)))
3064 /* Deep comparison of types. */
3066 /* An entry in the type-equality bcache. */
3068 typedef struct type_equality_entry
3070 struct type *type1, *type2;
3071 } type_equality_entry_d;
3073 DEF_VEC_O (type_equality_entry_d);
3075 /* A helper function to compare two strings. Returns 1 if they are
3076 the same, 0 otherwise. Handles NULLs properly. */
3079 compare_maybe_null_strings (const char *s, const char *t)
3081 if (s == NULL && t != NULL)
3083 else if (s != NULL && t == NULL)
3085 else if (s == NULL && t== NULL)
3087 return strcmp (s, t) == 0;
3090 /* A helper function for check_types_worklist that checks two types for
3091 "deep" equality. Returns non-zero if the types are considered the
3092 same, zero otherwise. */
3095 check_types_equal (struct type *type1, struct type *type2,
3096 VEC (type_equality_entry_d) **worklist)
3098 CHECK_TYPEDEF (type1);
3099 CHECK_TYPEDEF (type2);
3104 if (TYPE_CODE (type1) != TYPE_CODE (type2)
3105 || TYPE_LENGTH (type1) != TYPE_LENGTH (type2)
3106 || TYPE_UNSIGNED (type1) != TYPE_UNSIGNED (type2)
3107 || TYPE_NOSIGN (type1) != TYPE_NOSIGN (type2)
3108 || TYPE_VARARGS (type1) != TYPE_VARARGS (type2)
3109 || TYPE_VECTOR (type1) != TYPE_VECTOR (type2)
3110 || TYPE_NOTTEXT (type1) != TYPE_NOTTEXT (type2)
3111 || TYPE_INSTANCE_FLAGS (type1) != TYPE_INSTANCE_FLAGS (type2)
3112 || TYPE_NFIELDS (type1) != TYPE_NFIELDS (type2))
3115 if (!compare_maybe_null_strings (TYPE_TAG_NAME (type1),
3116 TYPE_TAG_NAME (type2)))
3118 if (!compare_maybe_null_strings (TYPE_NAME (type1), TYPE_NAME (type2)))
3121 if (TYPE_CODE (type1) == TYPE_CODE_RANGE)
3123 if (memcmp (TYPE_RANGE_DATA (type1), TYPE_RANGE_DATA (type2),
3124 sizeof (*TYPE_RANGE_DATA (type1))) != 0)
3131 for (i = 0; i < TYPE_NFIELDS (type1); ++i)
3133 const struct field *field1 = &TYPE_FIELD (type1, i);
3134 const struct field *field2 = &TYPE_FIELD (type2, i);
3135 struct type_equality_entry entry;
3137 if (FIELD_ARTIFICIAL (*field1) != FIELD_ARTIFICIAL (*field2)
3138 || FIELD_BITSIZE (*field1) != FIELD_BITSIZE (*field2)
3139 || FIELD_LOC_KIND (*field1) != FIELD_LOC_KIND (*field2))
3141 if (!compare_maybe_null_strings (FIELD_NAME (*field1),
3142 FIELD_NAME (*field2)))
3144 switch (FIELD_LOC_KIND (*field1))
3146 case FIELD_LOC_KIND_BITPOS:
3147 if (FIELD_BITPOS (*field1) != FIELD_BITPOS (*field2))
3150 case FIELD_LOC_KIND_ENUMVAL:
3151 if (FIELD_ENUMVAL (*field1) != FIELD_ENUMVAL (*field2))
3154 case FIELD_LOC_KIND_PHYSADDR:
3155 if (FIELD_STATIC_PHYSADDR (*field1)
3156 != FIELD_STATIC_PHYSADDR (*field2))
3159 case FIELD_LOC_KIND_PHYSNAME:
3160 if (!compare_maybe_null_strings (FIELD_STATIC_PHYSNAME (*field1),
3161 FIELD_STATIC_PHYSNAME (*field2)))
3164 case FIELD_LOC_KIND_DWARF_BLOCK:
3166 struct dwarf2_locexpr_baton *block1, *block2;
3168 block1 = FIELD_DWARF_BLOCK (*field1);
3169 block2 = FIELD_DWARF_BLOCK (*field2);
3170 if (block1->per_cu != block2->per_cu
3171 || block1->size != block2->size
3172 || memcmp (block1->data, block2->data, block1->size) != 0)
3177 internal_error (__FILE__, __LINE__, _("Unsupported field kind "
3178 "%d by check_types_equal"),
3179 FIELD_LOC_KIND (*field1));
3182 entry.type1 = FIELD_TYPE (*field1);
3183 entry.type2 = FIELD_TYPE (*field2);
3184 VEC_safe_push (type_equality_entry_d, *worklist, &entry);
3188 if (TYPE_TARGET_TYPE (type1) != NULL)
3190 struct type_equality_entry entry;
3192 if (TYPE_TARGET_TYPE (type2) == NULL)
3195 entry.type1 = TYPE_TARGET_TYPE (type1);
3196 entry.type2 = TYPE_TARGET_TYPE (type2);
3197 VEC_safe_push (type_equality_entry_d, *worklist, &entry);
3199 else if (TYPE_TARGET_TYPE (type2) != NULL)
3205 /* Check types on a worklist for equality. Returns zero if any pair
3206 is not equal, non-zero if they are all considered equal. */
3209 check_types_worklist (VEC (type_equality_entry_d) **worklist,
3210 struct bcache *cache)
3212 while (!VEC_empty (type_equality_entry_d, *worklist))
3214 struct type_equality_entry entry;
3217 entry = *VEC_last (type_equality_entry_d, *worklist);
3218 VEC_pop (type_equality_entry_d, *worklist);
3220 /* If the type pair has already been visited, we know it is
3222 bcache_full (&entry, sizeof (entry), cache, &added);
3226 if (check_types_equal (entry.type1, entry.type2, worklist) == 0)
3233 /* Return non-zero if types TYPE1 and TYPE2 are equal, as determined by a
3234 "deep comparison". Otherwise return zero. */
3237 types_deeply_equal (struct type *type1, struct type *type2)
3239 struct gdb_exception except = exception_none;
3241 struct bcache *cache;
3242 VEC (type_equality_entry_d) *worklist = NULL;
3243 struct type_equality_entry entry;
3245 gdb_assert (type1 != NULL && type2 != NULL);
3247 /* Early exit for the simple case. */
3251 cache = bcache_xmalloc (NULL, NULL);
3253 entry.type1 = type1;
3254 entry.type2 = type2;
3255 VEC_safe_push (type_equality_entry_d, worklist, &entry);
3257 /* check_types_worklist calls several nested helper functions, some
3258 of which can raise a GDB exception, so we just check and rethrow
3259 here. If there is a GDB exception, a comparison is not capable
3260 (or trusted), so exit. */
3263 result = check_types_worklist (&worklist, cache);
3265 CATCH (ex, RETURN_MASK_ALL)
3271 bcache_xfree (cache);
3272 VEC_free (type_equality_entry_d, worklist);
3274 /* Rethrow if there was a problem. */
3275 if (except.reason < 0)
3276 throw_exception (except);
3281 /* Compare one type (PARM) for compatibility with another (ARG).
3282 * PARM is intended to be the parameter type of a function; and
3283 * ARG is the supplied argument's type. This function tests if
3284 * the latter can be converted to the former.
3285 * VALUE is the argument's value or NULL if none (or called recursively)
3287 * Return 0 if they are identical types;
3288 * Otherwise, return an integer which corresponds to how compatible
3289 * PARM is to ARG. The higher the return value, the worse the match.
3290 * Generally the "bad" conversions are all uniformly assigned a 100. */
3293 rank_one_type (struct type *parm, struct type *arg, struct value *value)
3295 struct rank rank = {0,0};
3297 if (types_equal (parm, arg))
3298 return EXACT_MATCH_BADNESS;
3300 /* Resolve typedefs */
3301 if (TYPE_CODE (parm) == TYPE_CODE_TYPEDEF)
3302 parm = check_typedef (parm);
3303 if (TYPE_CODE (arg) == TYPE_CODE_TYPEDEF)
3304 arg = check_typedef (arg);
3306 /* See through references, since we can almost make non-references
3308 if (TYPE_CODE (arg) == TYPE_CODE_REF)
3309 return (sum_ranks (rank_one_type (parm, TYPE_TARGET_TYPE (arg), NULL),
3310 REFERENCE_CONVERSION_BADNESS));
3311 if (TYPE_CODE (parm) == TYPE_CODE_REF)
3312 return (sum_ranks (rank_one_type (TYPE_TARGET_TYPE (parm), arg, NULL),
3313 REFERENCE_CONVERSION_BADNESS));
3315 /* Debugging only. */
3316 fprintf_filtered (gdb_stderr,
3317 "------ Arg is %s [%d], parm is %s [%d]\n",
3318 TYPE_NAME (arg), TYPE_CODE (arg),
3319 TYPE_NAME (parm), TYPE_CODE (parm));
3321 /* x -> y means arg of type x being supplied for parameter of type y. */
3323 switch (TYPE_CODE (parm))
3326 switch (TYPE_CODE (arg))
3330 /* Allowed pointer conversions are:
3331 (a) pointer to void-pointer conversion. */
3332 if (TYPE_CODE (TYPE_TARGET_TYPE (parm)) == TYPE_CODE_VOID)
3333 return VOID_PTR_CONVERSION_BADNESS;
3335 /* (b) pointer to ancestor-pointer conversion. */
3336 rank.subrank = distance_to_ancestor (TYPE_TARGET_TYPE (parm),
3337 TYPE_TARGET_TYPE (arg),
3339 if (rank.subrank >= 0)
3340 return sum_ranks (BASE_PTR_CONVERSION_BADNESS, rank);
3342 return INCOMPATIBLE_TYPE_BADNESS;
3343 case TYPE_CODE_ARRAY:
3344 if (types_equal (TYPE_TARGET_TYPE (parm),
3345 TYPE_TARGET_TYPE (arg)))
3346 return EXACT_MATCH_BADNESS;
3347 return INCOMPATIBLE_TYPE_BADNESS;
3348 case TYPE_CODE_FUNC:
3349 return rank_one_type (TYPE_TARGET_TYPE (parm), arg, NULL);
3351 if (value != NULL && TYPE_CODE (value_type (value)) == TYPE_CODE_INT)
3353 if (value_as_long (value) == 0)
3355 /* Null pointer conversion: allow it to be cast to a pointer.
3356 [4.10.1 of C++ standard draft n3290] */
3357 return NULL_POINTER_CONVERSION_BADNESS;
3361 /* If type checking is disabled, allow the conversion. */
3362 if (!strict_type_checking)
3363 return NS_INTEGER_POINTER_CONVERSION_BADNESS;
3367 case TYPE_CODE_ENUM:
3368 case TYPE_CODE_FLAGS:
3369 case TYPE_CODE_CHAR:
3370 case TYPE_CODE_RANGE:
3371 case TYPE_CODE_BOOL:
3373 return INCOMPATIBLE_TYPE_BADNESS;
3375 case TYPE_CODE_ARRAY:
3376 switch (TYPE_CODE (arg))
3379 case TYPE_CODE_ARRAY:
3380 return rank_one_type (TYPE_TARGET_TYPE (parm),
3381 TYPE_TARGET_TYPE (arg), NULL);
3383 return INCOMPATIBLE_TYPE_BADNESS;
3385 case TYPE_CODE_FUNC:
3386 switch (TYPE_CODE (arg))
3388 case TYPE_CODE_PTR: /* funcptr -> func */
3389 return rank_one_type (parm, TYPE_TARGET_TYPE (arg), NULL);
3391 return INCOMPATIBLE_TYPE_BADNESS;
3394 switch (TYPE_CODE (arg))
3397 if (TYPE_LENGTH (arg) == TYPE_LENGTH (parm))
3399 /* Deal with signed, unsigned, and plain chars and
3400 signed and unsigned ints. */
3401 if (TYPE_NOSIGN (parm))
3403 /* This case only for character types. */
3404 if (TYPE_NOSIGN (arg))
3405 return EXACT_MATCH_BADNESS; /* plain char -> plain char */
3406 else /* signed/unsigned char -> plain char */
3407 return INTEGER_CONVERSION_BADNESS;
3409 else if (TYPE_UNSIGNED (parm))
3411 if (TYPE_UNSIGNED (arg))
3413 /* unsigned int -> unsigned int, or
3414 unsigned long -> unsigned long */
3415 if (integer_types_same_name_p (TYPE_NAME (parm),
3417 return EXACT_MATCH_BADNESS;
3418 else if (integer_types_same_name_p (TYPE_NAME (arg),
3420 && integer_types_same_name_p (TYPE_NAME (parm),
3422 /* unsigned int -> unsigned long */
3423 return INTEGER_PROMOTION_BADNESS;
3425 /* unsigned long -> unsigned int */
3426 return INTEGER_CONVERSION_BADNESS;
3430 if (integer_types_same_name_p (TYPE_NAME (arg),
3432 && integer_types_same_name_p (TYPE_NAME (parm),
3434 /* signed long -> unsigned int */
3435 return INTEGER_CONVERSION_BADNESS;
3437 /* signed int/long -> unsigned int/long */
3438 return INTEGER_CONVERSION_BADNESS;
3441 else if (!TYPE_NOSIGN (arg) && !TYPE_UNSIGNED (arg))
3443 if (integer_types_same_name_p (TYPE_NAME (parm),
3445 return EXACT_MATCH_BADNESS;
3446 else if (integer_types_same_name_p (TYPE_NAME (arg),
3448 && integer_types_same_name_p (TYPE_NAME (parm),
3450 return INTEGER_PROMOTION_BADNESS;
3452 return INTEGER_CONVERSION_BADNESS;
3455 return INTEGER_CONVERSION_BADNESS;
3457 else if (TYPE_LENGTH (arg) < TYPE_LENGTH (parm))
3458 return INTEGER_PROMOTION_BADNESS;
3460 return INTEGER_CONVERSION_BADNESS;
3461 case TYPE_CODE_ENUM:
3462 case TYPE_CODE_FLAGS:
3463 case TYPE_CODE_CHAR:
3464 case TYPE_CODE_RANGE:
3465 case TYPE_CODE_BOOL:
3466 if (TYPE_DECLARED_CLASS (arg))
3467 return INCOMPATIBLE_TYPE_BADNESS;
3468 return INTEGER_PROMOTION_BADNESS;
3470 return INT_FLOAT_CONVERSION_BADNESS;
3472 return NS_POINTER_CONVERSION_BADNESS;
3474 return INCOMPATIBLE_TYPE_BADNESS;
3477 case TYPE_CODE_ENUM:
3478 switch (TYPE_CODE (arg))
3481 case TYPE_CODE_CHAR:
3482 case TYPE_CODE_RANGE:
3483 case TYPE_CODE_BOOL:
3484 case TYPE_CODE_ENUM:
3485 if (TYPE_DECLARED_CLASS (parm) || TYPE_DECLARED_CLASS (arg))
3486 return INCOMPATIBLE_TYPE_BADNESS;
3487 return INTEGER_CONVERSION_BADNESS;
3489 return INT_FLOAT_CONVERSION_BADNESS;
3491 return INCOMPATIBLE_TYPE_BADNESS;
3494 case TYPE_CODE_CHAR:
3495 switch (TYPE_CODE (arg))
3497 case TYPE_CODE_RANGE:
3498 case TYPE_CODE_BOOL:
3499 case TYPE_CODE_ENUM:
3500 if (TYPE_DECLARED_CLASS (arg))
3501 return INCOMPATIBLE_TYPE_BADNESS;
3502 return INTEGER_CONVERSION_BADNESS;
3504 return INT_FLOAT_CONVERSION_BADNESS;
3506 if (TYPE_LENGTH (arg) > TYPE_LENGTH (parm))
3507 return INTEGER_CONVERSION_BADNESS;
3508 else if (TYPE_LENGTH (arg) < TYPE_LENGTH (parm))
3509 return INTEGER_PROMOTION_BADNESS;
3510 /* >>> !! else fall through !! <<< */
3511 case TYPE_CODE_CHAR:
3512 /* Deal with signed, unsigned, and plain chars for C++ and
3513 with int cases falling through from previous case. */
3514 if (TYPE_NOSIGN (parm))
3516 if (TYPE_NOSIGN (arg))
3517 return EXACT_MATCH_BADNESS;
3519 return INTEGER_CONVERSION_BADNESS;
3521 else if (TYPE_UNSIGNED (parm))
3523 if (TYPE_UNSIGNED (arg))
3524 return EXACT_MATCH_BADNESS;
3526 return INTEGER_PROMOTION_BADNESS;
3528 else if (!TYPE_NOSIGN (arg) && !TYPE_UNSIGNED (arg))
3529 return EXACT_MATCH_BADNESS;
3531 return INTEGER_CONVERSION_BADNESS;
3533 return INCOMPATIBLE_TYPE_BADNESS;
3536 case TYPE_CODE_RANGE:
3537 switch (TYPE_CODE (arg))
3540 case TYPE_CODE_CHAR:
3541 case TYPE_CODE_RANGE:
3542 case TYPE_CODE_BOOL:
3543 case TYPE_CODE_ENUM:
3544 return INTEGER_CONVERSION_BADNESS;
3546 return INT_FLOAT_CONVERSION_BADNESS;
3548 return INCOMPATIBLE_TYPE_BADNESS;
3551 case TYPE_CODE_BOOL:
3552 switch (TYPE_CODE (arg))
3554 /* n3290 draft, section 4.12.1 (conv.bool):
3556 "A prvalue of arithmetic, unscoped enumeration, pointer, or
3557 pointer to member type can be converted to a prvalue of type
3558 bool. A zero value, null pointer value, or null member pointer
3559 value is converted to false; any other value is converted to
3560 true. A prvalue of type std::nullptr_t can be converted to a
3561 prvalue of type bool; the resulting value is false." */
3563 case TYPE_CODE_CHAR:
3564 case TYPE_CODE_ENUM:
3566 case TYPE_CODE_MEMBERPTR:
3568 return BOOL_CONVERSION_BADNESS;
3569 case TYPE_CODE_RANGE:
3570 return INCOMPATIBLE_TYPE_BADNESS;
3571 case TYPE_CODE_BOOL:
3572 return EXACT_MATCH_BADNESS;
3574 return INCOMPATIBLE_TYPE_BADNESS;
3578 switch (TYPE_CODE (arg))
3581 if (TYPE_LENGTH (arg) < TYPE_LENGTH (parm))
3582 return FLOAT_PROMOTION_BADNESS;
3583 else if (TYPE_LENGTH (arg) == TYPE_LENGTH (parm))
3584 return EXACT_MATCH_BADNESS;
3586 return FLOAT_CONVERSION_BADNESS;
3588 case TYPE_CODE_BOOL:
3589 case TYPE_CODE_ENUM:
3590 case TYPE_CODE_RANGE:
3591 case TYPE_CODE_CHAR:
3592 return INT_FLOAT_CONVERSION_BADNESS;
3594 return INCOMPATIBLE_TYPE_BADNESS;
3597 case TYPE_CODE_COMPLEX:
3598 switch (TYPE_CODE (arg))
3599 { /* Strictly not needed for C++, but... */
3601 return FLOAT_PROMOTION_BADNESS;
3602 case TYPE_CODE_COMPLEX:
3603 return EXACT_MATCH_BADNESS;
3605 return INCOMPATIBLE_TYPE_BADNESS;
3608 case TYPE_CODE_STRUCT:
3609 switch (TYPE_CODE (arg))
3611 case TYPE_CODE_STRUCT:
3612 /* Check for derivation */
3613 rank.subrank = distance_to_ancestor (parm, arg, 0);
3614 if (rank.subrank >= 0)
3615 return sum_ranks (BASE_CONVERSION_BADNESS, rank);
3616 /* else fall through */
3618 return INCOMPATIBLE_TYPE_BADNESS;
3621 case TYPE_CODE_UNION:
3622 switch (TYPE_CODE (arg))
3624 case TYPE_CODE_UNION:
3626 return INCOMPATIBLE_TYPE_BADNESS;
3629 case TYPE_CODE_MEMBERPTR:
3630 switch (TYPE_CODE (arg))
3633 return INCOMPATIBLE_TYPE_BADNESS;
3636 case TYPE_CODE_METHOD:
3637 switch (TYPE_CODE (arg))
3641 return INCOMPATIBLE_TYPE_BADNESS;
3645 switch (TYPE_CODE (arg))
3649 return INCOMPATIBLE_TYPE_BADNESS;
3654 switch (TYPE_CODE (arg))
3658 return rank_one_type (TYPE_FIELD_TYPE (parm, 0),
3659 TYPE_FIELD_TYPE (arg, 0), NULL);
3661 return INCOMPATIBLE_TYPE_BADNESS;
3664 case TYPE_CODE_VOID:
3666 return INCOMPATIBLE_TYPE_BADNESS;
3667 } /* switch (TYPE_CODE (arg)) */
3670 /* End of functions for overload resolution. */
3672 /* Routines to pretty-print types. */
3675 print_bit_vector (B_TYPE *bits, int nbits)
3679 for (bitno = 0; bitno < nbits; bitno++)
3681 if ((bitno % 8) == 0)
3683 puts_filtered (" ");
3685 if (B_TST (bits, bitno))
3686 printf_filtered (("1"));
3688 printf_filtered (("0"));
3692 /* Note the first arg should be the "this" pointer, we may not want to
3693 include it since we may get into a infinitely recursive
3697 print_args (struct field *args, int nargs, int spaces)
3703 for (i = 0; i < nargs; i++)
3705 printfi_filtered (spaces, "[%d] name '%s'\n", i,
3706 args[i].name != NULL ? args[i].name : "<NULL>");
3707 recursive_dump_type (args[i].type, spaces + 2);
3713 field_is_static (struct field *f)
3715 /* "static" fields are the fields whose location is not relative
3716 to the address of the enclosing struct. It would be nice to
3717 have a dedicated flag that would be set for static fields when
3718 the type is being created. But in practice, checking the field
3719 loc_kind should give us an accurate answer. */
3720 return (FIELD_LOC_KIND (*f) == FIELD_LOC_KIND_PHYSNAME
3721 || FIELD_LOC_KIND (*f) == FIELD_LOC_KIND_PHYSADDR);
3725 dump_fn_fieldlists (struct type *type, int spaces)
3731 printfi_filtered (spaces, "fn_fieldlists ");
3732 gdb_print_host_address (TYPE_FN_FIELDLISTS (type), gdb_stdout);
3733 printf_filtered ("\n");
3734 for (method_idx = 0; method_idx < TYPE_NFN_FIELDS (type); method_idx++)
3736 f = TYPE_FN_FIELDLIST1 (type, method_idx);
3737 printfi_filtered (spaces + 2, "[%d] name '%s' (",
3739 TYPE_FN_FIELDLIST_NAME (type, method_idx));
3740 gdb_print_host_address (TYPE_FN_FIELDLIST_NAME (type, method_idx),
3742 printf_filtered (_(") length %d\n"),
3743 TYPE_FN_FIELDLIST_LENGTH (type, method_idx));
3744 for (overload_idx = 0;
3745 overload_idx < TYPE_FN_FIELDLIST_LENGTH (type, method_idx);
3748 printfi_filtered (spaces + 4, "[%d] physname '%s' (",
3750 TYPE_FN_FIELD_PHYSNAME (f, overload_idx));
3751 gdb_print_host_address (TYPE_FN_FIELD_PHYSNAME (f, overload_idx),
3753 printf_filtered (")\n");
3754 printfi_filtered (spaces + 8, "type ");
3755 gdb_print_host_address (TYPE_FN_FIELD_TYPE (f, overload_idx),
3757 printf_filtered ("\n");
3759 recursive_dump_type (TYPE_FN_FIELD_TYPE (f, overload_idx),
3762 printfi_filtered (spaces + 8, "args ");
3763 gdb_print_host_address (TYPE_FN_FIELD_ARGS (f, overload_idx),
3765 printf_filtered ("\n");
3766 print_args (TYPE_FN_FIELD_ARGS (f, overload_idx),
3767 TYPE_NFIELDS (TYPE_FN_FIELD_TYPE (f, overload_idx)),
3769 printfi_filtered (spaces + 8, "fcontext ");
3770 gdb_print_host_address (TYPE_FN_FIELD_FCONTEXT (f, overload_idx),
3772 printf_filtered ("\n");
3774 printfi_filtered (spaces + 8, "is_const %d\n",
3775 TYPE_FN_FIELD_CONST (f, overload_idx));
3776 printfi_filtered (spaces + 8, "is_volatile %d\n",
3777 TYPE_FN_FIELD_VOLATILE (f, overload_idx));
3778 printfi_filtered (spaces + 8, "is_private %d\n",
3779 TYPE_FN_FIELD_PRIVATE (f, overload_idx));
3780 printfi_filtered (spaces + 8, "is_protected %d\n",
3781 TYPE_FN_FIELD_PROTECTED (f, overload_idx));
3782 printfi_filtered (spaces + 8, "is_stub %d\n",
3783 TYPE_FN_FIELD_STUB (f, overload_idx));
3784 printfi_filtered (spaces + 8, "voffset %u\n",
3785 TYPE_FN_FIELD_VOFFSET (f, overload_idx));
3791 print_cplus_stuff (struct type *type, int spaces)
3793 printfi_filtered (spaces, "vptr_fieldno %d\n", TYPE_VPTR_FIELDNO (type));
3794 printfi_filtered (spaces, "vptr_basetype ");
3795 gdb_print_host_address (TYPE_VPTR_BASETYPE (type), gdb_stdout);
3796 puts_filtered ("\n");
3797 if (TYPE_VPTR_BASETYPE (type) != NULL)
3798 recursive_dump_type (TYPE_VPTR_BASETYPE (type), spaces + 2);
3800 printfi_filtered (spaces, "n_baseclasses %d\n",
3801 TYPE_N_BASECLASSES (type));
3802 printfi_filtered (spaces, "nfn_fields %d\n",
3803 TYPE_NFN_FIELDS (type));
3804 if (TYPE_N_BASECLASSES (type) > 0)
3806 printfi_filtered (spaces, "virtual_field_bits (%d bits at *",
3807 TYPE_N_BASECLASSES (type));
3808 gdb_print_host_address (TYPE_FIELD_VIRTUAL_BITS (type),
3810 printf_filtered (")");
3812 print_bit_vector (TYPE_FIELD_VIRTUAL_BITS (type),
3813 TYPE_N_BASECLASSES (type));
3814 puts_filtered ("\n");
3816 if (TYPE_NFIELDS (type) > 0)
3818 if (TYPE_FIELD_PRIVATE_BITS (type) != NULL)
3820 printfi_filtered (spaces,
3821 "private_field_bits (%d bits at *",
3822 TYPE_NFIELDS (type));
3823 gdb_print_host_address (TYPE_FIELD_PRIVATE_BITS (type),
3825 printf_filtered (")");
3826 print_bit_vector (TYPE_FIELD_PRIVATE_BITS (type),
3827 TYPE_NFIELDS (type));
3828 puts_filtered ("\n");
3830 if (TYPE_FIELD_PROTECTED_BITS (type) != NULL)
3832 printfi_filtered (spaces,
3833 "protected_field_bits (%d bits at *",
3834 TYPE_NFIELDS (type));
3835 gdb_print_host_address (TYPE_FIELD_PROTECTED_BITS (type),
3837 printf_filtered (")");
3838 print_bit_vector (TYPE_FIELD_PROTECTED_BITS (type),
3839 TYPE_NFIELDS (type));
3840 puts_filtered ("\n");
3843 if (TYPE_NFN_FIELDS (type) > 0)
3845 dump_fn_fieldlists (type, spaces);
3849 /* Print the contents of the TYPE's type_specific union, assuming that
3850 its type-specific kind is TYPE_SPECIFIC_GNAT_STUFF. */
3853 print_gnat_stuff (struct type *type, int spaces)
3855 struct type *descriptive_type = TYPE_DESCRIPTIVE_TYPE (type);
3857 recursive_dump_type (descriptive_type, spaces + 2);
3860 static struct obstack dont_print_type_obstack;
3863 recursive_dump_type (struct type *type, int spaces)
3868 obstack_begin (&dont_print_type_obstack, 0);
3870 if (TYPE_NFIELDS (type) > 0
3871 || (HAVE_CPLUS_STRUCT (type) && TYPE_NFN_FIELDS (type) > 0))
3873 struct type **first_dont_print
3874 = (struct type **) obstack_base (&dont_print_type_obstack);
3876 int i = (struct type **)
3877 obstack_next_free (&dont_print_type_obstack) - first_dont_print;
3881 if (type == first_dont_print[i])
3883 printfi_filtered (spaces, "type node ");
3884 gdb_print_host_address (type, gdb_stdout);
3885 printf_filtered (_(" <same as already seen type>\n"));
3890 obstack_ptr_grow (&dont_print_type_obstack, type);
3893 printfi_filtered (spaces, "type node ");
3894 gdb_print_host_address (type, gdb_stdout);
3895 printf_filtered ("\n");
3896 printfi_filtered (spaces, "name '%s' (",
3897 TYPE_NAME (type) ? TYPE_NAME (type) : "<NULL>");
3898 gdb_print_host_address (TYPE_NAME (type), gdb_stdout);
3899 printf_filtered (")\n");
3900 printfi_filtered (spaces, "tagname '%s' (",
3901 TYPE_TAG_NAME (type) ? TYPE_TAG_NAME (type) : "<NULL>");
3902 gdb_print_host_address (TYPE_TAG_NAME (type), gdb_stdout);
3903 printf_filtered (")\n");
3904 printfi_filtered (spaces, "code 0x%x ", TYPE_CODE (type));
3905 switch (TYPE_CODE (type))
3907 case TYPE_CODE_UNDEF:
3908 printf_filtered ("(TYPE_CODE_UNDEF)");
3911 printf_filtered ("(TYPE_CODE_PTR)");
3913 case TYPE_CODE_ARRAY:
3914 printf_filtered ("(TYPE_CODE_ARRAY)");
3916 case TYPE_CODE_STRUCT:
3917 printf_filtered ("(TYPE_CODE_STRUCT)");
3919 case TYPE_CODE_UNION:
3920 printf_filtered ("(TYPE_CODE_UNION)");
3922 case TYPE_CODE_ENUM:
3923 printf_filtered ("(TYPE_CODE_ENUM)");
3925 case TYPE_CODE_FLAGS:
3926 printf_filtered ("(TYPE_CODE_FLAGS)");
3928 case TYPE_CODE_FUNC:
3929 printf_filtered ("(TYPE_CODE_FUNC)");
3932 printf_filtered ("(TYPE_CODE_INT)");
3935 printf_filtered ("(TYPE_CODE_FLT)");
3937 case TYPE_CODE_VOID:
3938 printf_filtered ("(TYPE_CODE_VOID)");
3941 printf_filtered ("(TYPE_CODE_SET)");
3943 case TYPE_CODE_RANGE:
3944 printf_filtered ("(TYPE_CODE_RANGE)");
3946 case TYPE_CODE_STRING:
3947 printf_filtered ("(TYPE_CODE_STRING)");
3949 case TYPE_CODE_ERROR:
3950 printf_filtered ("(TYPE_CODE_ERROR)");
3952 case TYPE_CODE_MEMBERPTR:
3953 printf_filtered ("(TYPE_CODE_MEMBERPTR)");
3955 case TYPE_CODE_METHODPTR:
3956 printf_filtered ("(TYPE_CODE_METHODPTR)");
3958 case TYPE_CODE_METHOD:
3959 printf_filtered ("(TYPE_CODE_METHOD)");
3962 printf_filtered ("(TYPE_CODE_REF)");
3964 case TYPE_CODE_CHAR:
3965 printf_filtered ("(TYPE_CODE_CHAR)");
3967 case TYPE_CODE_BOOL:
3968 printf_filtered ("(TYPE_CODE_BOOL)");
3970 case TYPE_CODE_COMPLEX:
3971 printf_filtered ("(TYPE_CODE_COMPLEX)");
3973 case TYPE_CODE_TYPEDEF:
3974 printf_filtered ("(TYPE_CODE_TYPEDEF)");
3976 case TYPE_CODE_NAMESPACE:
3977 printf_filtered ("(TYPE_CODE_NAMESPACE)");
3980 printf_filtered ("(UNKNOWN TYPE CODE)");
3983 puts_filtered ("\n");
3984 printfi_filtered (spaces, "length %d\n", TYPE_LENGTH (type));
3985 if (TYPE_OBJFILE_OWNED (type))
3987 printfi_filtered (spaces, "objfile ");
3988 gdb_print_host_address (TYPE_OWNER (type).objfile, gdb_stdout);
3992 printfi_filtered (spaces, "gdbarch ");
3993 gdb_print_host_address (TYPE_OWNER (type).gdbarch, gdb_stdout);
3995 printf_filtered ("\n");
3996 printfi_filtered (spaces, "target_type ");
3997 gdb_print_host_address (TYPE_TARGET_TYPE (type), gdb_stdout);
3998 printf_filtered ("\n");
3999 if (TYPE_TARGET_TYPE (type) != NULL)
4001 recursive_dump_type (TYPE_TARGET_TYPE (type), spaces + 2);
4003 printfi_filtered (spaces, "pointer_type ");
4004 gdb_print_host_address (TYPE_POINTER_TYPE (type), gdb_stdout);
4005 printf_filtered ("\n");
4006 printfi_filtered (spaces, "reference_type ");
4007 gdb_print_host_address (TYPE_REFERENCE_TYPE (type), gdb_stdout);
4008 printf_filtered ("\n");
4009 printfi_filtered (spaces, "type_chain ");
4010 gdb_print_host_address (TYPE_CHAIN (type), gdb_stdout);
4011 printf_filtered ("\n");
4012 printfi_filtered (spaces, "instance_flags 0x%x",
4013 TYPE_INSTANCE_FLAGS (type));
4014 if (TYPE_CONST (type))
4016 puts_filtered (" TYPE_FLAG_CONST");
4018 if (TYPE_VOLATILE (type))
4020 puts_filtered (" TYPE_FLAG_VOLATILE");
4022 if (TYPE_CODE_SPACE (type))
4024 puts_filtered (" TYPE_FLAG_CODE_SPACE");
4026 if (TYPE_DATA_SPACE (type))
4028 puts_filtered (" TYPE_FLAG_DATA_SPACE");
4030 if (TYPE_ADDRESS_CLASS_1 (type))
4032 puts_filtered (" TYPE_FLAG_ADDRESS_CLASS_1");
4034 if (TYPE_ADDRESS_CLASS_2 (type))
4036 puts_filtered (" TYPE_FLAG_ADDRESS_CLASS_2");
4038 if (TYPE_RESTRICT (type))
4040 puts_filtered (" TYPE_FLAG_RESTRICT");
4042 if (TYPE_ATOMIC (type))
4044 puts_filtered (" TYPE_FLAG_ATOMIC");
4046 puts_filtered ("\n");
4048 printfi_filtered (spaces, "flags");
4049 if (TYPE_UNSIGNED (type))
4051 puts_filtered (" TYPE_FLAG_UNSIGNED");
4053 if (TYPE_NOSIGN (type))
4055 puts_filtered (" TYPE_FLAG_NOSIGN");
4057 if (TYPE_STUB (type))
4059 puts_filtered (" TYPE_FLAG_STUB");
4061 if (TYPE_TARGET_STUB (type))
4063 puts_filtered (" TYPE_FLAG_TARGET_STUB");
4065 if (TYPE_STATIC (type))
4067 puts_filtered (" TYPE_FLAG_STATIC");
4069 if (TYPE_PROTOTYPED (type))
4071 puts_filtered (" TYPE_FLAG_PROTOTYPED");
4073 if (TYPE_INCOMPLETE (type))
4075 puts_filtered (" TYPE_FLAG_INCOMPLETE");
4077 if (TYPE_VARARGS (type))
4079 puts_filtered (" TYPE_FLAG_VARARGS");
4081 /* This is used for things like AltiVec registers on ppc. Gcc emits
4082 an attribute for the array type, which tells whether or not we
4083 have a vector, instead of a regular array. */
4084 if (TYPE_VECTOR (type))
4086 puts_filtered (" TYPE_FLAG_VECTOR");
4088 if (TYPE_FIXED_INSTANCE (type))
4090 puts_filtered (" TYPE_FIXED_INSTANCE");
4092 if (TYPE_STUB_SUPPORTED (type))
4094 puts_filtered (" TYPE_STUB_SUPPORTED");
4096 if (TYPE_NOTTEXT (type))
4098 puts_filtered (" TYPE_NOTTEXT");
4100 puts_filtered ("\n");
4101 printfi_filtered (spaces, "nfields %d ", TYPE_NFIELDS (type));
4102 gdb_print_host_address (TYPE_FIELDS (type), gdb_stdout);
4103 puts_filtered ("\n");
4104 for (idx = 0; idx < TYPE_NFIELDS (type); idx++)
4106 if (TYPE_CODE (type) == TYPE_CODE_ENUM)
4107 printfi_filtered (spaces + 2,
4108 "[%d] enumval %s type ",
4109 idx, plongest (TYPE_FIELD_ENUMVAL (type, idx)));
4111 printfi_filtered (spaces + 2,
4112 "[%d] bitpos %d bitsize %d type ",
4113 idx, TYPE_FIELD_BITPOS (type, idx),
4114 TYPE_FIELD_BITSIZE (type, idx));
4115 gdb_print_host_address (TYPE_FIELD_TYPE (type, idx), gdb_stdout);
4116 printf_filtered (" name '%s' (",
4117 TYPE_FIELD_NAME (type, idx) != NULL
4118 ? TYPE_FIELD_NAME (type, idx)
4120 gdb_print_host_address (TYPE_FIELD_NAME (type, idx), gdb_stdout);
4121 printf_filtered (")\n");
4122 if (TYPE_FIELD_TYPE (type, idx) != NULL)
4124 recursive_dump_type (TYPE_FIELD_TYPE (type, idx), spaces + 4);
4127 if (TYPE_CODE (type) == TYPE_CODE_RANGE)
4129 printfi_filtered (spaces, "low %s%s high %s%s\n",
4130 plongest (TYPE_LOW_BOUND (type)),
4131 TYPE_LOW_BOUND_UNDEFINED (type) ? " (undefined)" : "",
4132 plongest (TYPE_HIGH_BOUND (type)),
4133 TYPE_HIGH_BOUND_UNDEFINED (type)
4134 ? " (undefined)" : "");
4137 switch (TYPE_SPECIFIC_FIELD (type))
4139 case TYPE_SPECIFIC_CPLUS_STUFF:
4140 printfi_filtered (spaces, "cplus_stuff ");
4141 gdb_print_host_address (TYPE_CPLUS_SPECIFIC (type),
4143 puts_filtered ("\n");
4144 print_cplus_stuff (type, spaces);
4147 case TYPE_SPECIFIC_GNAT_STUFF:
4148 printfi_filtered (spaces, "gnat_stuff ");
4149 gdb_print_host_address (TYPE_GNAT_SPECIFIC (type), gdb_stdout);
4150 puts_filtered ("\n");
4151 print_gnat_stuff (type, spaces);
4154 case TYPE_SPECIFIC_FLOATFORMAT:
4155 printfi_filtered (spaces, "floatformat ");
4156 if (TYPE_FLOATFORMAT (type) == NULL)
4157 puts_filtered ("(null)");
4160 puts_filtered ("{ ");
4161 if (TYPE_FLOATFORMAT (type)[0] == NULL
4162 || TYPE_FLOATFORMAT (type)[0]->name == NULL)
4163 puts_filtered ("(null)");
4165 puts_filtered (TYPE_FLOATFORMAT (type)[0]->name);
4167 puts_filtered (", ");
4168 if (TYPE_FLOATFORMAT (type)[1] == NULL
4169 || TYPE_FLOATFORMAT (type)[1]->name == NULL)
4170 puts_filtered ("(null)");
4172 puts_filtered (TYPE_FLOATFORMAT (type)[1]->name);
4174 puts_filtered (" }");
4176 puts_filtered ("\n");
4179 case TYPE_SPECIFIC_FUNC:
4180 printfi_filtered (spaces, "calling_convention %d\n",
4181 TYPE_CALLING_CONVENTION (type));
4182 /* tail_call_list is not printed. */
4185 case TYPE_SPECIFIC_SELF_TYPE:
4186 printfi_filtered (spaces, "self_type ");
4187 gdb_print_host_address (TYPE_SELF_TYPE (type), gdb_stdout);
4188 puts_filtered ("\n");
4193 obstack_free (&dont_print_type_obstack, NULL);
4196 /* Trivial helpers for the libiberty hash table, for mapping one
4201 struct type *old, *newobj;
4205 type_pair_hash (const void *item)
4207 const struct type_pair *pair = item;
4209 return htab_hash_pointer (pair->old);
4213 type_pair_eq (const void *item_lhs, const void *item_rhs)
4215 const struct type_pair *lhs = item_lhs, *rhs = item_rhs;
4217 return lhs->old == rhs->old;
4220 /* Allocate the hash table used by copy_type_recursive to walk
4221 types without duplicates. We use OBJFILE's obstack, because
4222 OBJFILE is about to be deleted. */
4225 create_copied_types_hash (struct objfile *objfile)
4227 return htab_create_alloc_ex (1, type_pair_hash, type_pair_eq,
4228 NULL, &objfile->objfile_obstack,
4229 hashtab_obstack_allocate,
4230 dummy_obstack_deallocate);
4233 /* Recursively copy (deep copy) TYPE, if it is associated with
4234 OBJFILE. Return a new type allocated using malloc, a saved type if
4235 we have already visited TYPE (using COPIED_TYPES), or TYPE if it is
4236 not associated with OBJFILE. */
4239 copy_type_recursive (struct objfile *objfile,
4241 htab_t copied_types)
4243 struct type_pair *stored, pair;
4245 struct type *new_type;
4247 if (! TYPE_OBJFILE_OWNED (type))
4250 /* This type shouldn't be pointing to any types in other objfiles;
4251 if it did, the type might disappear unexpectedly. */
4252 gdb_assert (TYPE_OBJFILE (type) == objfile);
4255 slot = htab_find_slot (copied_types, &pair, INSERT);
4257 return ((struct type_pair *) *slot)->newobj;
4259 new_type = alloc_type_arch (get_type_arch (type));
4261 /* We must add the new type to the hash table immediately, in case
4262 we encounter this type again during a recursive call below. */
4264 = obstack_alloc (&objfile->objfile_obstack, sizeof (struct type_pair));
4266 stored->newobj = new_type;
4269 /* Copy the common fields of types. For the main type, we simply
4270 copy the entire thing and then update specific fields as needed. */
4271 *TYPE_MAIN_TYPE (new_type) = *TYPE_MAIN_TYPE (type);
4272 TYPE_OBJFILE_OWNED (new_type) = 0;
4273 TYPE_OWNER (new_type).gdbarch = get_type_arch (type);
4275 if (TYPE_NAME (type))
4276 TYPE_NAME (new_type) = xstrdup (TYPE_NAME (type));
4277 if (TYPE_TAG_NAME (type))
4278 TYPE_TAG_NAME (new_type) = xstrdup (TYPE_TAG_NAME (type));
4280 TYPE_INSTANCE_FLAGS (new_type) = TYPE_INSTANCE_FLAGS (type);
4281 TYPE_LENGTH (new_type) = TYPE_LENGTH (type);
4283 /* Copy the fields. */
4284 if (TYPE_NFIELDS (type))
4288 nfields = TYPE_NFIELDS (type);
4289 TYPE_FIELDS (new_type) = XCNEWVEC (struct field, nfields);
4290 for (i = 0; i < nfields; i++)
4292 TYPE_FIELD_ARTIFICIAL (new_type, i) =
4293 TYPE_FIELD_ARTIFICIAL (type, i);
4294 TYPE_FIELD_BITSIZE (new_type, i) = TYPE_FIELD_BITSIZE (type, i);
4295 if (TYPE_FIELD_TYPE (type, i))
4296 TYPE_FIELD_TYPE (new_type, i)
4297 = copy_type_recursive (objfile, TYPE_FIELD_TYPE (type, i),
4299 if (TYPE_FIELD_NAME (type, i))
4300 TYPE_FIELD_NAME (new_type, i) =
4301 xstrdup (TYPE_FIELD_NAME (type, i));
4302 switch (TYPE_FIELD_LOC_KIND (type, i))
4304 case FIELD_LOC_KIND_BITPOS:
4305 SET_FIELD_BITPOS (TYPE_FIELD (new_type, i),
4306 TYPE_FIELD_BITPOS (type, i));
4308 case FIELD_LOC_KIND_ENUMVAL:
4309 SET_FIELD_ENUMVAL (TYPE_FIELD (new_type, i),
4310 TYPE_FIELD_ENUMVAL (type, i));
4312 case FIELD_LOC_KIND_PHYSADDR:
4313 SET_FIELD_PHYSADDR (TYPE_FIELD (new_type, i),
4314 TYPE_FIELD_STATIC_PHYSADDR (type, i));
4316 case FIELD_LOC_KIND_PHYSNAME:
4317 SET_FIELD_PHYSNAME (TYPE_FIELD (new_type, i),
4318 xstrdup (TYPE_FIELD_STATIC_PHYSNAME (type,
4322 internal_error (__FILE__, __LINE__,
4323 _("Unexpected type field location kind: %d"),
4324 TYPE_FIELD_LOC_KIND (type, i));
4329 /* For range types, copy the bounds information. */
4330 if (TYPE_CODE (type) == TYPE_CODE_RANGE)
4332 TYPE_RANGE_DATA (new_type) = xmalloc (sizeof (struct range_bounds));
4333 *TYPE_RANGE_DATA (new_type) = *TYPE_RANGE_DATA (type);
4336 /* Copy the data location information. */
4337 if (TYPE_DATA_LOCATION (type) != NULL)
4339 TYPE_DATA_LOCATION (new_type)
4340 = TYPE_ALLOC (new_type, sizeof (struct dynamic_prop));
4341 memcpy (TYPE_DATA_LOCATION (new_type), TYPE_DATA_LOCATION (type),
4342 sizeof (struct dynamic_prop));
4345 /* Copy pointers to other types. */
4346 if (TYPE_TARGET_TYPE (type))
4347 TYPE_TARGET_TYPE (new_type) =
4348 copy_type_recursive (objfile,
4349 TYPE_TARGET_TYPE (type),
4352 /* Maybe copy the type_specific bits.
4354 NOTE drow/2005-12-09: We do not copy the C++-specific bits like
4355 base classes and methods. There's no fundamental reason why we
4356 can't, but at the moment it is not needed. */
4358 switch (TYPE_SPECIFIC_FIELD (type))
4360 case TYPE_SPECIFIC_NONE:
4362 case TYPE_SPECIFIC_FUNC:
4363 INIT_FUNC_SPECIFIC (new_type);
4364 TYPE_CALLING_CONVENTION (new_type) = TYPE_CALLING_CONVENTION (type);
4365 TYPE_NO_RETURN (new_type) = TYPE_NO_RETURN (type);
4366 TYPE_TAIL_CALL_LIST (new_type) = NULL;
4368 case TYPE_SPECIFIC_FLOATFORMAT:
4369 TYPE_FLOATFORMAT (new_type) = TYPE_FLOATFORMAT (type);
4371 case TYPE_SPECIFIC_CPLUS_STUFF:
4372 INIT_CPLUS_SPECIFIC (new_type);
4374 case TYPE_SPECIFIC_GNAT_STUFF:
4375 INIT_GNAT_SPECIFIC (new_type);
4377 case TYPE_SPECIFIC_SELF_TYPE:
4378 set_type_self_type (new_type,
4379 copy_type_recursive (objfile, TYPE_SELF_TYPE (type),
4383 gdb_assert_not_reached ("bad type_specific_kind");
4389 /* Make a copy of the given TYPE, except that the pointer & reference
4390 types are not preserved.
4392 This function assumes that the given type has an associated objfile.
4393 This objfile is used to allocate the new type. */
4396 copy_type (const struct type *type)
4398 struct type *new_type;
4400 gdb_assert (TYPE_OBJFILE_OWNED (type));
4402 new_type = alloc_type_copy (type);
4403 TYPE_INSTANCE_FLAGS (new_type) = TYPE_INSTANCE_FLAGS (type);
4404 TYPE_LENGTH (new_type) = TYPE_LENGTH (type);
4405 memcpy (TYPE_MAIN_TYPE (new_type), TYPE_MAIN_TYPE (type),
4406 sizeof (struct main_type));
4407 if (TYPE_DATA_LOCATION (type) != NULL)
4409 TYPE_DATA_LOCATION (new_type)
4410 = TYPE_ALLOC (new_type, sizeof (struct dynamic_prop));
4411 memcpy (TYPE_DATA_LOCATION (new_type), TYPE_DATA_LOCATION (type),
4412 sizeof (struct dynamic_prop));
4418 /* Helper functions to initialize architecture-specific types. */
4420 /* Allocate a type structure associated with GDBARCH and set its
4421 CODE, LENGTH, and NAME fields. */
4424 arch_type (struct gdbarch *gdbarch,
4425 enum type_code code, int length, char *name)
4429 type = alloc_type_arch (gdbarch);
4430 TYPE_CODE (type) = code;
4431 TYPE_LENGTH (type) = length;
4434 TYPE_NAME (type) = xstrdup (name);
4439 /* Allocate a TYPE_CODE_INT type structure associated with GDBARCH.
4440 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
4441 the type's TYPE_UNSIGNED flag. NAME is the type name. */
4444 arch_integer_type (struct gdbarch *gdbarch,
4445 int bit, int unsigned_p, char *name)
4449 t = arch_type (gdbarch, TYPE_CODE_INT, bit / TARGET_CHAR_BIT, name);
4451 TYPE_UNSIGNED (t) = 1;
4452 if (name && strcmp (name, "char") == 0)
4453 TYPE_NOSIGN (t) = 1;
4458 /* Allocate a TYPE_CODE_CHAR type structure associated with GDBARCH.
4459 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
4460 the type's TYPE_UNSIGNED flag. NAME is the type name. */
4463 arch_character_type (struct gdbarch *gdbarch,
4464 int bit, int unsigned_p, char *name)
4468 t = arch_type (gdbarch, TYPE_CODE_CHAR, bit / TARGET_CHAR_BIT, name);
4470 TYPE_UNSIGNED (t) = 1;
4475 /* Allocate a TYPE_CODE_BOOL type structure associated with GDBARCH.
4476 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
4477 the type's TYPE_UNSIGNED flag. NAME is the type name. */
4480 arch_boolean_type (struct gdbarch *gdbarch,
4481 int bit, int unsigned_p, char *name)
4485 t = arch_type (gdbarch, TYPE_CODE_BOOL, bit / TARGET_CHAR_BIT, name);
4487 TYPE_UNSIGNED (t) = 1;
4492 /* Allocate a TYPE_CODE_FLT type structure associated with GDBARCH.
4493 BIT is the type size in bits; if BIT equals -1, the size is
4494 determined by the floatformat. NAME is the type name. Set the
4495 TYPE_FLOATFORMAT from FLOATFORMATS. */
4498 arch_float_type (struct gdbarch *gdbarch,
4499 int bit, char *name, const struct floatformat **floatformats)
4505 gdb_assert (floatformats != NULL);
4506 gdb_assert (floatformats[0] != NULL && floatformats[1] != NULL);
4507 bit = floatformats[0]->totalsize;
4509 gdb_assert (bit >= 0);
4511 t = arch_type (gdbarch, TYPE_CODE_FLT, bit / TARGET_CHAR_BIT, name);
4512 TYPE_FLOATFORMAT (t) = floatformats;
4516 /* Allocate a TYPE_CODE_COMPLEX type structure associated with GDBARCH.
4517 NAME is the type name. TARGET_TYPE is the component float type. */
4520 arch_complex_type (struct gdbarch *gdbarch,
4521 char *name, struct type *target_type)
4525 t = arch_type (gdbarch, TYPE_CODE_COMPLEX,
4526 2 * TYPE_LENGTH (target_type), name);
4527 TYPE_TARGET_TYPE (t) = target_type;
4531 /* Allocate a TYPE_CODE_FLAGS type structure associated with GDBARCH.
4532 NAME is the type name. LENGTH is the size of the flag word in bytes. */
4535 arch_flags_type (struct gdbarch *gdbarch, char *name, int length)
4537 int nfields = length * TARGET_CHAR_BIT;
4540 type = arch_type (gdbarch, TYPE_CODE_FLAGS, length, name);
4541 TYPE_UNSIGNED (type) = 1;
4542 TYPE_NFIELDS (type) = nfields;
4543 TYPE_FIELDS (type) = TYPE_ZALLOC (type, nfields * sizeof (struct field));
4548 /* Add field to TYPE_CODE_FLAGS type TYPE to indicate the bit at
4549 position BITPOS is called NAME. */
4552 append_flags_type_flag (struct type *type, int bitpos, char *name)
4554 gdb_assert (TYPE_CODE (type) == TYPE_CODE_FLAGS);
4555 gdb_assert (bitpos < TYPE_NFIELDS (type));
4556 gdb_assert (bitpos >= 0);
4560 TYPE_FIELD_NAME (type, bitpos) = xstrdup (name);
4561 SET_FIELD_BITPOS (TYPE_FIELD (type, bitpos), bitpos);
4565 /* Don't show this field to the user. */
4566 SET_FIELD_BITPOS (TYPE_FIELD (type, bitpos), -1);
4570 /* Allocate a TYPE_CODE_STRUCT or TYPE_CODE_UNION type structure (as
4571 specified by CODE) associated with GDBARCH. NAME is the type name. */
4574 arch_composite_type (struct gdbarch *gdbarch, char *name, enum type_code code)
4578 gdb_assert (code == TYPE_CODE_STRUCT || code == TYPE_CODE_UNION);
4579 t = arch_type (gdbarch, code, 0, NULL);
4580 TYPE_TAG_NAME (t) = name;
4581 INIT_CPLUS_SPECIFIC (t);
4585 /* Add new field with name NAME and type FIELD to composite type T.
4586 Do not set the field's position or adjust the type's length;
4587 the caller should do so. Return the new field. */
4590 append_composite_type_field_raw (struct type *t, char *name,
4595 TYPE_NFIELDS (t) = TYPE_NFIELDS (t) + 1;
4596 TYPE_FIELDS (t) = xrealloc (TYPE_FIELDS (t),
4597 sizeof (struct field) * TYPE_NFIELDS (t));
4598 f = &(TYPE_FIELDS (t)[TYPE_NFIELDS (t) - 1]);
4599 memset (f, 0, sizeof f[0]);
4600 FIELD_TYPE (f[0]) = field;
4601 FIELD_NAME (f[0]) = name;
4605 /* Add new field with name NAME and type FIELD to composite type T.
4606 ALIGNMENT (if non-zero) specifies the minimum field alignment. */
4609 append_composite_type_field_aligned (struct type *t, char *name,
4610 struct type *field, int alignment)
4612 struct field *f = append_composite_type_field_raw (t, name, field);
4614 if (TYPE_CODE (t) == TYPE_CODE_UNION)
4616 if (TYPE_LENGTH (t) < TYPE_LENGTH (field))
4617 TYPE_LENGTH (t) = TYPE_LENGTH (field);
4619 else if (TYPE_CODE (t) == TYPE_CODE_STRUCT)
4621 TYPE_LENGTH (t) = TYPE_LENGTH (t) + TYPE_LENGTH (field);
4622 if (TYPE_NFIELDS (t) > 1)
4624 SET_FIELD_BITPOS (f[0],
4625 (FIELD_BITPOS (f[-1])
4626 + (TYPE_LENGTH (FIELD_TYPE (f[-1]))
4627 * TARGET_CHAR_BIT)));
4633 alignment *= TARGET_CHAR_BIT;
4634 left = FIELD_BITPOS (f[0]) % alignment;
4638 SET_FIELD_BITPOS (f[0], FIELD_BITPOS (f[0]) + (alignment - left));
4639 TYPE_LENGTH (t) += (alignment - left) / TARGET_CHAR_BIT;
4646 /* Add new field with name NAME and type FIELD to composite type T. */
4649 append_composite_type_field (struct type *t, char *name,
4652 append_composite_type_field_aligned (t, name, field, 0);
4655 static struct gdbarch_data *gdbtypes_data;
4657 const struct builtin_type *
4658 builtin_type (struct gdbarch *gdbarch)
4660 return gdbarch_data (gdbarch, gdbtypes_data);
4664 gdbtypes_post_init (struct gdbarch *gdbarch)
4666 struct builtin_type *builtin_type
4667 = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct builtin_type);
4670 builtin_type->builtin_void
4671 = arch_type (gdbarch, TYPE_CODE_VOID, 1, "void");
4672 builtin_type->builtin_char
4673 = arch_integer_type (gdbarch, TARGET_CHAR_BIT,
4674 !gdbarch_char_signed (gdbarch), "char");
4675 builtin_type->builtin_signed_char
4676 = arch_integer_type (gdbarch, TARGET_CHAR_BIT,
4678 builtin_type->builtin_unsigned_char
4679 = arch_integer_type (gdbarch, TARGET_CHAR_BIT,
4680 1, "unsigned char");
4681 builtin_type->builtin_short
4682 = arch_integer_type (gdbarch, gdbarch_short_bit (gdbarch),
4684 builtin_type->builtin_unsigned_short
4685 = arch_integer_type (gdbarch, gdbarch_short_bit (gdbarch),
4686 1, "unsigned short");
4687 builtin_type->builtin_int
4688 = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch),
4690 builtin_type->builtin_unsigned_int
4691 = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch),
4693 builtin_type->builtin_long
4694 = arch_integer_type (gdbarch, gdbarch_long_bit (gdbarch),
4696 builtin_type->builtin_unsigned_long
4697 = arch_integer_type (gdbarch, gdbarch_long_bit (gdbarch),
4698 1, "unsigned long");
4699 builtin_type->builtin_long_long
4700 = arch_integer_type (gdbarch, gdbarch_long_long_bit (gdbarch),
4702 builtin_type->builtin_unsigned_long_long
4703 = arch_integer_type (gdbarch, gdbarch_long_long_bit (gdbarch),
4704 1, "unsigned long long");
4705 builtin_type->builtin_float
4706 = arch_float_type (gdbarch, gdbarch_float_bit (gdbarch),
4707 "float", gdbarch_float_format (gdbarch));
4708 builtin_type->builtin_double
4709 = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch),
4710 "double", gdbarch_double_format (gdbarch));
4711 builtin_type->builtin_long_double
4712 = arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch),
4713 "long double", gdbarch_long_double_format (gdbarch));
4714 builtin_type->builtin_complex
4715 = arch_complex_type (gdbarch, "complex",
4716 builtin_type->builtin_float);
4717 builtin_type->builtin_double_complex
4718 = arch_complex_type (gdbarch, "double complex",
4719 builtin_type->builtin_double);
4720 builtin_type->builtin_string
4721 = arch_type (gdbarch, TYPE_CODE_STRING, 1, "string");
4722 builtin_type->builtin_bool
4723 = arch_type (gdbarch, TYPE_CODE_BOOL, 1, "bool");
4725 /* The following three are about decimal floating point types, which
4726 are 32-bits, 64-bits and 128-bits respectively. */
4727 builtin_type->builtin_decfloat
4728 = arch_type (gdbarch, TYPE_CODE_DECFLOAT, 32 / 8, "_Decimal32");
4729 builtin_type->builtin_decdouble
4730 = arch_type (gdbarch, TYPE_CODE_DECFLOAT, 64 / 8, "_Decimal64");
4731 builtin_type->builtin_declong
4732 = arch_type (gdbarch, TYPE_CODE_DECFLOAT, 128 / 8, "_Decimal128");
4734 /* "True" character types. */
4735 builtin_type->builtin_true_char
4736 = arch_character_type (gdbarch, TARGET_CHAR_BIT, 0, "true character");
4737 builtin_type->builtin_true_unsigned_char
4738 = arch_character_type (gdbarch, TARGET_CHAR_BIT, 1, "true character");
4740 /* Fixed-size integer types. */
4741 builtin_type->builtin_int0
4742 = arch_integer_type (gdbarch, 0, 0, "int0_t");
4743 builtin_type->builtin_int8
4744 = arch_integer_type (gdbarch, 8, 0, "int8_t");
4745 builtin_type->builtin_uint8
4746 = arch_integer_type (gdbarch, 8, 1, "uint8_t");
4747 builtin_type->builtin_int16
4748 = arch_integer_type (gdbarch, 16, 0, "int16_t");
4749 builtin_type->builtin_uint16
4750 = arch_integer_type (gdbarch, 16, 1, "uint16_t");
4751 builtin_type->builtin_int32
4752 = arch_integer_type (gdbarch, 32, 0, "int32_t");
4753 builtin_type->builtin_uint32
4754 = arch_integer_type (gdbarch, 32, 1, "uint32_t");
4755 builtin_type->builtin_int64
4756 = arch_integer_type (gdbarch, 64, 0, "int64_t");
4757 builtin_type->builtin_uint64
4758 = arch_integer_type (gdbarch, 64, 1, "uint64_t");
4759 builtin_type->builtin_int128
4760 = arch_integer_type (gdbarch, 128, 0, "int128_t");
4761 builtin_type->builtin_uint128
4762 = arch_integer_type (gdbarch, 128, 1, "uint128_t");
4763 TYPE_INSTANCE_FLAGS (builtin_type->builtin_int8) |=
4764 TYPE_INSTANCE_FLAG_NOTTEXT;
4765 TYPE_INSTANCE_FLAGS (builtin_type->builtin_uint8) |=
4766 TYPE_INSTANCE_FLAG_NOTTEXT;
4768 /* Wide character types. */
4769 builtin_type->builtin_char16
4770 = arch_integer_type (gdbarch, 16, 0, "char16_t");
4771 builtin_type->builtin_char32
4772 = arch_integer_type (gdbarch, 32, 0, "char32_t");
4775 /* Default data/code pointer types. */
4776 builtin_type->builtin_data_ptr
4777 = lookup_pointer_type (builtin_type->builtin_void);
4778 builtin_type->builtin_func_ptr
4779 = lookup_pointer_type (lookup_function_type (builtin_type->builtin_void));
4780 builtin_type->builtin_func_func
4781 = lookup_function_type (builtin_type->builtin_func_ptr);
4783 /* This type represents a GDB internal function. */
4784 builtin_type->internal_fn
4785 = arch_type (gdbarch, TYPE_CODE_INTERNAL_FUNCTION, 0,
4786 "<internal function>");
4788 /* This type represents an xmethod. */
4789 builtin_type->xmethod
4790 = arch_type (gdbarch, TYPE_CODE_XMETHOD, 0, "<xmethod>");
4792 return builtin_type;
4795 /* This set of objfile-based types is intended to be used by symbol
4796 readers as basic types. */
4798 static const struct objfile_data *objfile_type_data;
4800 const struct objfile_type *
4801 objfile_type (struct objfile *objfile)
4803 struct gdbarch *gdbarch;
4804 struct objfile_type *objfile_type
4805 = objfile_data (objfile, objfile_type_data);
4808 return objfile_type;
4810 objfile_type = OBSTACK_CALLOC (&objfile->objfile_obstack,
4811 1, struct objfile_type);
4813 /* Use the objfile architecture to determine basic type properties. */
4814 gdbarch = get_objfile_arch (objfile);
4817 objfile_type->builtin_void
4818 = init_type (TYPE_CODE_VOID, 1,
4822 objfile_type->builtin_char
4823 = init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
4825 | (gdbarch_char_signed (gdbarch) ? 0 : TYPE_FLAG_UNSIGNED)),
4827 objfile_type->builtin_signed_char
4828 = init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
4830 "signed char", objfile);
4831 objfile_type->builtin_unsigned_char
4832 = init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
4834 "unsigned char", objfile);
4835 objfile_type->builtin_short
4836 = init_type (TYPE_CODE_INT,
4837 gdbarch_short_bit (gdbarch) / TARGET_CHAR_BIT,
4838 0, "short", objfile);
4839 objfile_type->builtin_unsigned_short
4840 = init_type (TYPE_CODE_INT,
4841 gdbarch_short_bit (gdbarch) / TARGET_CHAR_BIT,
4842 TYPE_FLAG_UNSIGNED, "unsigned short", objfile);
4843 objfile_type->builtin_int
4844 = init_type (TYPE_CODE_INT,
4845 gdbarch_int_bit (gdbarch) / TARGET_CHAR_BIT,
4847 objfile_type->builtin_unsigned_int
4848 = init_type (TYPE_CODE_INT,
4849 gdbarch_int_bit (gdbarch) / TARGET_CHAR_BIT,
4850 TYPE_FLAG_UNSIGNED, "unsigned int", objfile);
4851 objfile_type->builtin_long
4852 = init_type (TYPE_CODE_INT,
4853 gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT,
4854 0, "long", objfile);
4855 objfile_type->builtin_unsigned_long
4856 = init_type (TYPE_CODE_INT,
4857 gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT,
4858 TYPE_FLAG_UNSIGNED, "unsigned long", objfile);
4859 objfile_type->builtin_long_long
4860 = init_type (TYPE_CODE_INT,
4861 gdbarch_long_long_bit (gdbarch) / TARGET_CHAR_BIT,
4862 0, "long long", objfile);
4863 objfile_type->builtin_unsigned_long_long
4864 = init_type (TYPE_CODE_INT,
4865 gdbarch_long_long_bit (gdbarch) / TARGET_CHAR_BIT,
4866 TYPE_FLAG_UNSIGNED, "unsigned long long", objfile);
4868 objfile_type->builtin_float
4869 = init_type (TYPE_CODE_FLT,
4870 gdbarch_float_bit (gdbarch) / TARGET_CHAR_BIT,
4871 0, "float", objfile);
4872 TYPE_FLOATFORMAT (objfile_type->builtin_float)
4873 = gdbarch_float_format (gdbarch);
4874 objfile_type->builtin_double
4875 = init_type (TYPE_CODE_FLT,
4876 gdbarch_double_bit (gdbarch) / TARGET_CHAR_BIT,
4877 0, "double", objfile);
4878 TYPE_FLOATFORMAT (objfile_type->builtin_double)
4879 = gdbarch_double_format (gdbarch);
4880 objfile_type->builtin_long_double
4881 = init_type (TYPE_CODE_FLT,
4882 gdbarch_long_double_bit (gdbarch) / TARGET_CHAR_BIT,
4883 0, "long double", objfile);
4884 TYPE_FLOATFORMAT (objfile_type->builtin_long_double)
4885 = gdbarch_long_double_format (gdbarch);
4887 /* This type represents a type that was unrecognized in symbol read-in. */
4888 objfile_type->builtin_error
4889 = init_type (TYPE_CODE_ERROR, 0, 0, "<unknown type>", objfile);
4891 /* The following set of types is used for symbols with no
4892 debug information. */
4893 objfile_type->nodebug_text_symbol
4894 = init_type (TYPE_CODE_FUNC, 1, 0,
4895 "<text variable, no debug info>", objfile);
4896 TYPE_TARGET_TYPE (objfile_type->nodebug_text_symbol)
4897 = objfile_type->builtin_int;
4898 objfile_type->nodebug_text_gnu_ifunc_symbol
4899 = init_type (TYPE_CODE_FUNC, 1, TYPE_FLAG_GNU_IFUNC,
4900 "<text gnu-indirect-function variable, no debug info>",
4902 TYPE_TARGET_TYPE (objfile_type->nodebug_text_gnu_ifunc_symbol)
4903 = objfile_type->nodebug_text_symbol;
4904 objfile_type->nodebug_got_plt_symbol
4905 = init_type (TYPE_CODE_PTR, gdbarch_addr_bit (gdbarch) / 8, 0,
4906 "<text from jump slot in .got.plt, no debug info>",
4908 TYPE_TARGET_TYPE (objfile_type->nodebug_got_plt_symbol)
4909 = objfile_type->nodebug_text_symbol;
4910 objfile_type->nodebug_data_symbol
4911 = init_type (TYPE_CODE_INT,
4912 gdbarch_int_bit (gdbarch) / HOST_CHAR_BIT, 0,
4913 "<data variable, no debug info>", objfile);
4914 objfile_type->nodebug_unknown_symbol
4915 = init_type (TYPE_CODE_INT, 1, 0,
4916 "<variable (not text or data), no debug info>", objfile);
4917 objfile_type->nodebug_tls_symbol
4918 = init_type (TYPE_CODE_INT,
4919 gdbarch_int_bit (gdbarch) / HOST_CHAR_BIT, 0,
4920 "<thread local variable, no debug info>", objfile);
4922 /* NOTE: on some targets, addresses and pointers are not necessarily
4926 - gdb's `struct type' always describes the target's
4928 - gdb's `struct value' objects should always hold values in
4930 - gdb's CORE_ADDR values are addresses in the unified virtual
4931 address space that the assembler and linker work with. Thus,
4932 since target_read_memory takes a CORE_ADDR as an argument, it
4933 can access any memory on the target, even if the processor has
4934 separate code and data address spaces.
4936 In this context, objfile_type->builtin_core_addr is a bit odd:
4937 it's a target type for a value the target will never see. It's
4938 only used to hold the values of (typeless) linker symbols, which
4939 are indeed in the unified virtual address space. */
4941 objfile_type->builtin_core_addr
4942 = init_type (TYPE_CODE_INT,
4943 gdbarch_addr_bit (gdbarch) / 8,
4944 TYPE_FLAG_UNSIGNED, "__CORE_ADDR", objfile);
4946 set_objfile_data (objfile, objfile_type_data, objfile_type);
4947 return objfile_type;
4950 extern initialize_file_ftype _initialize_gdbtypes;
4953 _initialize_gdbtypes (void)
4955 gdbtypes_data = gdbarch_data_register_post_init (gdbtypes_post_init);
4956 objfile_type_data = register_objfile_data ();
4958 add_setshow_zuinteger_cmd ("overload", no_class, &overload_debug,
4959 _("Set debugging of C++ overloading."),
4960 _("Show debugging of C++ overloading."),
4961 _("When enabled, ranking of the "
4962 "functions is displayed."),
4964 show_overload_debug,
4965 &setdebuglist, &showdebuglist);
4967 /* Add user knob for controlling resolution of opaque types. */
4968 add_setshow_boolean_cmd ("opaque-type-resolution", class_support,
4969 &opaque_type_resolution,
4970 _("Set resolution of opaque struct/class/union"
4971 " types (if set before loading symbols)."),
4972 _("Show resolution of opaque struct/class/union"
4973 " types (if set before loading symbols)."),
4975 show_opaque_type_resolution,
4976 &setlist, &showlist);
4978 /* Add an option to permit non-strict type checking. */
4979 add_setshow_boolean_cmd ("type", class_support,
4980 &strict_type_checking,
4981 _("Set strict type checking."),
4982 _("Show strict type checking."),
4984 show_strict_type_checking,
4985 &setchecklist, &showchecklist);