1 /* Support routines for manipulating internal types for GDB.
3 Copyright (C) 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001, 2002,
4 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
5 Free Software Foundation, Inc.
7 Contributed by Cygnus Support, using pieces from other GDB modules.
9 This file is part of GDB.
11 This program is free software; you can redistribute it and/or modify
12 it under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 3 of the License, or
14 (at your option) any later version.
16 This program is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 GNU General Public License for more details.
21 You should have received a copy of the GNU General Public License
22 along with this program. If not, see <http://www.gnu.org/licenses/>. */
25 #include "gdb_string.h"
31 #include "expression.h"
36 #include "complaints.h"
40 #include "gdb_assert.h"
44 /* Floatformat pairs. */
45 const struct floatformat *floatformats_ieee_single[BFD_ENDIAN_UNKNOWN] = {
46 &floatformat_ieee_single_big,
47 &floatformat_ieee_single_little
49 const struct floatformat *floatformats_ieee_double[BFD_ENDIAN_UNKNOWN] = {
50 &floatformat_ieee_double_big,
51 &floatformat_ieee_double_little
53 const struct floatformat *floatformats_ieee_double_littlebyte_bigword[BFD_ENDIAN_UNKNOWN] = {
54 &floatformat_ieee_double_big,
55 &floatformat_ieee_double_littlebyte_bigword
57 const struct floatformat *floatformats_i387_ext[BFD_ENDIAN_UNKNOWN] = {
58 &floatformat_i387_ext,
61 const struct floatformat *floatformats_m68881_ext[BFD_ENDIAN_UNKNOWN] = {
62 &floatformat_m68881_ext,
63 &floatformat_m68881_ext
65 const struct floatformat *floatformats_arm_ext[BFD_ENDIAN_UNKNOWN] = {
66 &floatformat_arm_ext_big,
67 &floatformat_arm_ext_littlebyte_bigword
69 const struct floatformat *floatformats_ia64_spill[BFD_ENDIAN_UNKNOWN] = {
70 &floatformat_ia64_spill_big,
71 &floatformat_ia64_spill_little
73 const struct floatformat *floatformats_ia64_quad[BFD_ENDIAN_UNKNOWN] = {
74 &floatformat_ia64_quad_big,
75 &floatformat_ia64_quad_little
77 const struct floatformat *floatformats_vax_f[BFD_ENDIAN_UNKNOWN] = {
81 const struct floatformat *floatformats_vax_d[BFD_ENDIAN_UNKNOWN] = {
85 const struct floatformat *floatformats_ibm_long_double[BFD_ENDIAN_UNKNOWN] = {
86 &floatformat_ibm_long_double,
87 &floatformat_ibm_long_double
91 int opaque_type_resolution = 1;
93 show_opaque_type_resolution (struct ui_file *file, int from_tty,
94 struct cmd_list_element *c,
97 fprintf_filtered (file, _("\
98 Resolution of opaque struct/class/union types (if set before loading symbols) is %s.\n"),
102 int overload_debug = 0;
104 show_overload_debug (struct ui_file *file, int from_tty,
105 struct cmd_list_element *c, const char *value)
107 fprintf_filtered (file, _("Debugging of C++ overloading is %s.\n"),
115 }; /* Maximum extension is 128! FIXME */
117 static void print_bit_vector (B_TYPE *, int);
118 static void print_arg_types (struct field *, int, int);
119 static void dump_fn_fieldlists (struct type *, int);
120 static void print_cplus_stuff (struct type *, int);
123 /* Allocate a new OBJFILE-associated type structure and fill it
124 with some defaults. Space for the type structure is allocated
125 on the objfile's objfile_obstack. */
128 alloc_type (struct objfile *objfile)
132 gdb_assert (objfile != NULL);
134 /* Alloc the structure and start off with all fields zeroed. */
135 type = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct type);
136 TYPE_MAIN_TYPE (type) = OBSTACK_ZALLOC (&objfile->objfile_obstack,
138 OBJSTAT (objfile, n_types++);
140 TYPE_OBJFILE_OWNED (type) = 1;
141 TYPE_OWNER (type).objfile = objfile;
143 /* Initialize the fields that might not be zero. */
145 TYPE_CODE (type) = TYPE_CODE_UNDEF;
146 TYPE_VPTR_FIELDNO (type) = -1;
147 TYPE_CHAIN (type) = type; /* Chain back to itself. */
152 /* Allocate a new GDBARCH-associated type structure and fill it
153 with some defaults. Space for the type structure is allocated
157 alloc_type_arch (struct gdbarch *gdbarch)
161 gdb_assert (gdbarch != NULL);
163 /* Alloc the structure and start off with all fields zeroed. */
165 type = XZALLOC (struct type);
166 TYPE_MAIN_TYPE (type) = XZALLOC (struct main_type);
168 TYPE_OBJFILE_OWNED (type) = 0;
169 TYPE_OWNER (type).gdbarch = gdbarch;
171 /* Initialize the fields that might not be zero. */
173 TYPE_CODE (type) = TYPE_CODE_UNDEF;
174 TYPE_VPTR_FIELDNO (type) = -1;
175 TYPE_CHAIN (type) = type; /* Chain back to itself. */
180 /* If TYPE is objfile-associated, allocate a new type structure
181 associated with the same objfile. If TYPE is gdbarch-associated,
182 allocate a new type structure associated with the same gdbarch. */
185 alloc_type_copy (const struct type *type)
187 if (TYPE_OBJFILE_OWNED (type))
188 return alloc_type (TYPE_OWNER (type).objfile);
190 return alloc_type_arch (TYPE_OWNER (type).gdbarch);
193 /* If TYPE is gdbarch-associated, return that architecture.
194 If TYPE is objfile-associated, return that objfile's architecture. */
197 get_type_arch (const struct type *type)
199 if (TYPE_OBJFILE_OWNED (type))
200 return get_objfile_arch (TYPE_OWNER (type).objfile);
202 return TYPE_OWNER (type).gdbarch;
206 /* Alloc a new type instance structure, fill it with some defaults,
207 and point it at OLDTYPE. Allocate the new type instance from the
208 same place as OLDTYPE. */
211 alloc_type_instance (struct type *oldtype)
215 /* Allocate the structure. */
217 if (! TYPE_OBJFILE_OWNED (oldtype))
218 type = XZALLOC (struct type);
220 type = OBSTACK_ZALLOC (&TYPE_OBJFILE (oldtype)->objfile_obstack,
223 TYPE_MAIN_TYPE (type) = TYPE_MAIN_TYPE (oldtype);
225 TYPE_CHAIN (type) = type; /* Chain back to itself for now. */
230 /* Clear all remnants of the previous type at TYPE, in preparation for
231 replacing it with something else. Preserve owner information. */
233 smash_type (struct type *type)
235 int objfile_owned = TYPE_OBJFILE_OWNED (type);
236 union type_owner owner = TYPE_OWNER (type);
238 memset (TYPE_MAIN_TYPE (type), 0, sizeof (struct main_type));
240 /* Restore owner information. */
241 TYPE_OBJFILE_OWNED (type) = objfile_owned;
242 TYPE_OWNER (type) = owner;
244 /* For now, delete the rings. */
245 TYPE_CHAIN (type) = type;
247 /* For now, leave the pointer/reference types alone. */
250 /* Lookup a pointer to a type TYPE. TYPEPTR, if nonzero, points
251 to a pointer to memory where the pointer type should be stored.
252 If *TYPEPTR is zero, update it to point to the pointer type we return.
253 We allocate new memory if needed. */
256 make_pointer_type (struct type *type, struct type **typeptr)
258 struct type *ntype; /* New type */
261 ntype = TYPE_POINTER_TYPE (type);
266 return ntype; /* Don't care about alloc,
267 and have new type. */
268 else if (*typeptr == 0)
270 *typeptr = ntype; /* Tracking alloc, and have new type. */
275 if (typeptr == 0 || *typeptr == 0) /* We'll need to allocate one. */
277 ntype = alloc_type_copy (type);
281 else /* We have storage, but need to reset it. */
284 chain = TYPE_CHAIN (ntype);
286 TYPE_CHAIN (ntype) = chain;
289 TYPE_TARGET_TYPE (ntype) = type;
290 TYPE_POINTER_TYPE (type) = ntype;
292 /* FIXME! Assume the machine has only one representation for
296 = gdbarch_ptr_bit (get_type_arch (type)) / TARGET_CHAR_BIT;
297 TYPE_CODE (ntype) = TYPE_CODE_PTR;
299 /* Mark pointers as unsigned. The target converts between pointers
300 and addresses (CORE_ADDRs) using gdbarch_pointer_to_address and
301 gdbarch_address_to_pointer. */
302 TYPE_UNSIGNED (ntype) = 1;
304 if (!TYPE_POINTER_TYPE (type)) /* Remember it, if don't have one. */
305 TYPE_POINTER_TYPE (type) = ntype;
307 /* Update the length of all the other variants of this type. */
308 chain = TYPE_CHAIN (ntype);
309 while (chain != ntype)
311 TYPE_LENGTH (chain) = TYPE_LENGTH (ntype);
312 chain = TYPE_CHAIN (chain);
318 /* Given a type TYPE, return a type of pointers to that type.
319 May need to construct such a type if this is the first use. */
322 lookup_pointer_type (struct type *type)
324 return make_pointer_type (type, (struct type **) 0);
327 /* Lookup a C++ `reference' to a type TYPE. TYPEPTR, if nonzero,
328 points to a pointer to memory where the reference type should be
329 stored. If *TYPEPTR is zero, update it to point to the reference
330 type we return. We allocate new memory if needed. */
333 make_reference_type (struct type *type, struct type **typeptr)
335 struct type *ntype; /* New type */
338 ntype = TYPE_REFERENCE_TYPE (type);
343 return ntype; /* Don't care about alloc,
344 and have new type. */
345 else if (*typeptr == 0)
347 *typeptr = ntype; /* Tracking alloc, and have new type. */
352 if (typeptr == 0 || *typeptr == 0) /* We'll need to allocate one. */
354 ntype = alloc_type_copy (type);
358 else /* We have storage, but need to reset it. */
361 chain = TYPE_CHAIN (ntype);
363 TYPE_CHAIN (ntype) = chain;
366 TYPE_TARGET_TYPE (ntype) = type;
367 TYPE_REFERENCE_TYPE (type) = ntype;
369 /* FIXME! Assume the machine has only one representation for
370 references, and that it matches the (only) representation for
373 TYPE_LENGTH (ntype) =
374 gdbarch_ptr_bit (get_type_arch (type)) / TARGET_CHAR_BIT;
375 TYPE_CODE (ntype) = TYPE_CODE_REF;
377 if (!TYPE_REFERENCE_TYPE (type)) /* Remember it, if don't have one. */
378 TYPE_REFERENCE_TYPE (type) = ntype;
380 /* Update the length of all the other variants of this type. */
381 chain = TYPE_CHAIN (ntype);
382 while (chain != ntype)
384 TYPE_LENGTH (chain) = TYPE_LENGTH (ntype);
385 chain = TYPE_CHAIN (chain);
391 /* Same as above, but caller doesn't care about memory allocation
395 lookup_reference_type (struct type *type)
397 return make_reference_type (type, (struct type **) 0);
400 /* Lookup a function type that returns type TYPE. TYPEPTR, if
401 nonzero, points to a pointer to memory where the function type
402 should be stored. If *TYPEPTR is zero, update it to point to the
403 function type we return. We allocate new memory if needed. */
406 make_function_type (struct type *type, struct type **typeptr)
408 struct type *ntype; /* New type */
410 if (typeptr == 0 || *typeptr == 0) /* We'll need to allocate one. */
412 ntype = alloc_type_copy (type);
416 else /* We have storage, but need to reset it. */
422 TYPE_TARGET_TYPE (ntype) = type;
424 TYPE_LENGTH (ntype) = 1;
425 TYPE_CODE (ntype) = TYPE_CODE_FUNC;
431 /* Given a type TYPE, return a type of functions that return that type.
432 May need to construct such a type if this is the first use. */
435 lookup_function_type (struct type *type)
437 return make_function_type (type, (struct type **) 0);
440 /* Identify address space identifier by name --
441 return the integer flag defined in gdbtypes.h. */
443 address_space_name_to_int (struct gdbarch *gdbarch, char *space_identifier)
447 /* Check for known address space delimiters. */
448 if (!strcmp (space_identifier, "code"))
449 return TYPE_INSTANCE_FLAG_CODE_SPACE;
450 else if (!strcmp (space_identifier, "data"))
451 return TYPE_INSTANCE_FLAG_DATA_SPACE;
452 else if (gdbarch_address_class_name_to_type_flags_p (gdbarch)
453 && gdbarch_address_class_name_to_type_flags (gdbarch,
458 error (_("Unknown address space specifier: \"%s\""), space_identifier);
461 /* Identify address space identifier by integer flag as defined in
462 gdbtypes.h -- return the string version of the adress space name. */
465 address_space_int_to_name (struct gdbarch *gdbarch, int space_flag)
467 if (space_flag & TYPE_INSTANCE_FLAG_CODE_SPACE)
469 else if (space_flag & TYPE_INSTANCE_FLAG_DATA_SPACE)
471 else if ((space_flag & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL)
472 && gdbarch_address_class_type_flags_to_name_p (gdbarch))
473 return gdbarch_address_class_type_flags_to_name (gdbarch, space_flag);
478 /* Create a new type with instance flags NEW_FLAGS, based on TYPE.
480 If STORAGE is non-NULL, create the new type instance there.
481 STORAGE must be in the same obstack as TYPE. */
484 make_qualified_type (struct type *type, int new_flags,
485 struct type *storage)
492 if (TYPE_INSTANCE_FLAGS (ntype) == new_flags)
494 ntype = TYPE_CHAIN (ntype);
496 while (ntype != type);
498 /* Create a new type instance. */
500 ntype = alloc_type_instance (type);
503 /* If STORAGE was provided, it had better be in the same objfile
504 as TYPE. Otherwise, we can't link it into TYPE's cv chain:
505 if one objfile is freed and the other kept, we'd have
506 dangling pointers. */
507 gdb_assert (TYPE_OBJFILE (type) == TYPE_OBJFILE (storage));
510 TYPE_MAIN_TYPE (ntype) = TYPE_MAIN_TYPE (type);
511 TYPE_CHAIN (ntype) = ntype;
514 /* Pointers or references to the original type are not relevant to
516 TYPE_POINTER_TYPE (ntype) = (struct type *) 0;
517 TYPE_REFERENCE_TYPE (ntype) = (struct type *) 0;
519 /* Chain the new qualified type to the old type. */
520 TYPE_CHAIN (ntype) = TYPE_CHAIN (type);
521 TYPE_CHAIN (type) = ntype;
523 /* Now set the instance flags and return the new type. */
524 TYPE_INSTANCE_FLAGS (ntype) = new_flags;
526 /* Set length of new type to that of the original type. */
527 TYPE_LENGTH (ntype) = TYPE_LENGTH (type);
532 /* Make an address-space-delimited variant of a type -- a type that
533 is identical to the one supplied except that it has an address
534 space attribute attached to it (such as "code" or "data").
536 The space attributes "code" and "data" are for Harvard
537 architectures. The address space attributes are for architectures
538 which have alternately sized pointers or pointers with alternate
542 make_type_with_address_space (struct type *type, int space_flag)
544 int new_flags = ((TYPE_INSTANCE_FLAGS (type)
545 & ~(TYPE_INSTANCE_FLAG_CODE_SPACE
546 | TYPE_INSTANCE_FLAG_DATA_SPACE
547 | TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL))
550 return make_qualified_type (type, new_flags, NULL);
553 /* Make a "c-v" variant of a type -- a type that is identical to the
554 one supplied except that it may have const or volatile attributes
555 CNST is a flag for setting the const attribute
556 VOLTL is a flag for setting the volatile attribute
557 TYPE is the base type whose variant we are creating.
559 If TYPEPTR and *TYPEPTR are non-zero, then *TYPEPTR points to
560 storage to hold the new qualified type; *TYPEPTR and TYPE must be
561 in the same objfile. Otherwise, allocate fresh memory for the new
562 type whereever TYPE lives. If TYPEPTR is non-zero, set it to the
563 new type we construct. */
565 make_cv_type (int cnst, int voltl,
567 struct type **typeptr)
569 struct type *ntype; /* New type */
571 int new_flags = (TYPE_INSTANCE_FLAGS (type)
572 & ~(TYPE_INSTANCE_FLAG_CONST
573 | TYPE_INSTANCE_FLAG_VOLATILE));
576 new_flags |= TYPE_INSTANCE_FLAG_CONST;
579 new_flags |= TYPE_INSTANCE_FLAG_VOLATILE;
581 if (typeptr && *typeptr != NULL)
583 /* TYPE and *TYPEPTR must be in the same objfile. We can't have
584 a C-V variant chain that threads across objfiles: if one
585 objfile gets freed, then the other has a broken C-V chain.
587 This code used to try to copy over the main type from TYPE to
588 *TYPEPTR if they were in different objfiles, but that's
589 wrong, too: TYPE may have a field list or member function
590 lists, which refer to types of their own, etc. etc. The
591 whole shebang would need to be copied over recursively; you
592 can't have inter-objfile pointers. The only thing to do is
593 to leave stub types as stub types, and look them up afresh by
594 name each time you encounter them. */
595 gdb_assert (TYPE_OBJFILE (*typeptr) == TYPE_OBJFILE (type));
598 ntype = make_qualified_type (type, new_flags,
599 typeptr ? *typeptr : NULL);
607 /* Replace the contents of ntype with the type *type. This changes the
608 contents, rather than the pointer for TYPE_MAIN_TYPE (ntype); thus
609 the changes are propogated to all types in the TYPE_CHAIN.
611 In order to build recursive types, it's inevitable that we'll need
612 to update types in place --- but this sort of indiscriminate
613 smashing is ugly, and needs to be replaced with something more
614 controlled. TYPE_MAIN_TYPE is a step in this direction; it's not
615 clear if more steps are needed. */
617 replace_type (struct type *ntype, struct type *type)
621 /* These two types had better be in the same objfile. Otherwise,
622 the assignment of one type's main type structure to the other
623 will produce a type with references to objects (names; field
624 lists; etc.) allocated on an objfile other than its own. */
625 gdb_assert (TYPE_OBJFILE (ntype) == TYPE_OBJFILE (ntype));
627 *TYPE_MAIN_TYPE (ntype) = *TYPE_MAIN_TYPE (type);
629 /* The type length is not a part of the main type. Update it for
630 each type on the variant chain. */
634 /* Assert that this element of the chain has no address-class bits
635 set in its flags. Such type variants might have type lengths
636 which are supposed to be different from the non-address-class
637 variants. This assertion shouldn't ever be triggered because
638 symbol readers which do construct address-class variants don't
639 call replace_type(). */
640 gdb_assert (TYPE_ADDRESS_CLASS_ALL (chain) == 0);
642 TYPE_LENGTH (chain) = TYPE_LENGTH (type);
643 chain = TYPE_CHAIN (chain);
645 while (ntype != chain);
647 /* Assert that the two types have equivalent instance qualifiers.
648 This should be true for at least all of our debug readers. */
649 gdb_assert (TYPE_INSTANCE_FLAGS (ntype) == TYPE_INSTANCE_FLAGS (type));
652 /* Implement direct support for MEMBER_TYPE in GNU C++.
653 May need to construct such a type if this is the first use.
654 The TYPE is the type of the member. The DOMAIN is the type
655 of the aggregate that the member belongs to. */
658 lookup_memberptr_type (struct type *type, struct type *domain)
662 mtype = alloc_type_copy (type);
663 smash_to_memberptr_type (mtype, domain, type);
667 /* Return a pointer-to-method type, for a method of type TO_TYPE. */
670 lookup_methodptr_type (struct type *to_type)
674 mtype = alloc_type_copy (to_type);
675 smash_to_methodptr_type (mtype, to_type);
679 /* Allocate a stub method whose return type is TYPE. This apparently
680 happens for speed of symbol reading, since parsing out the
681 arguments to the method is cpu-intensive, the way we are doing it.
682 So, we will fill in arguments later. This always returns a fresh
686 allocate_stub_method (struct type *type)
690 mtype = alloc_type_copy (type);
691 TYPE_CODE (mtype) = TYPE_CODE_METHOD;
692 TYPE_LENGTH (mtype) = 1;
693 TYPE_STUB (mtype) = 1;
694 TYPE_TARGET_TYPE (mtype) = type;
695 /* _DOMAIN_TYPE (mtype) = unknown yet */
699 /* Create a range type using either a blank type supplied in
700 RESULT_TYPE, or creating a new type, inheriting the objfile from
703 Indices will be of type INDEX_TYPE, and will range from LOW_BOUND
704 to HIGH_BOUND, inclusive.
706 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
707 sure it is TYPE_CODE_UNDEF before we bash it into a range type? */
710 create_range_type (struct type *result_type, struct type *index_type,
711 LONGEST low_bound, LONGEST high_bound)
713 if (result_type == NULL)
714 result_type = alloc_type_copy (index_type);
715 TYPE_CODE (result_type) = TYPE_CODE_RANGE;
716 TYPE_TARGET_TYPE (result_type) = index_type;
717 if (TYPE_STUB (index_type))
718 TYPE_TARGET_STUB (result_type) = 1;
720 TYPE_LENGTH (result_type) = TYPE_LENGTH (check_typedef (index_type));
721 TYPE_RANGE_DATA (result_type) = (struct range_bounds *)
722 TYPE_ZALLOC (result_type, sizeof (struct range_bounds));
723 TYPE_LOW_BOUND (result_type) = low_bound;
724 TYPE_HIGH_BOUND (result_type) = high_bound;
727 TYPE_UNSIGNED (result_type) = 1;
732 /* Set *LOWP and *HIGHP to the lower and upper bounds of discrete type
733 TYPE. Return 1 if type is a range type, 0 if it is discrete (and
734 bounds will fit in LONGEST), or -1 otherwise. */
737 get_discrete_bounds (struct type *type, LONGEST *lowp, LONGEST *highp)
739 CHECK_TYPEDEF (type);
740 switch (TYPE_CODE (type))
742 case TYPE_CODE_RANGE:
743 *lowp = TYPE_LOW_BOUND (type);
744 *highp = TYPE_HIGH_BOUND (type);
747 if (TYPE_NFIELDS (type) > 0)
749 /* The enums may not be sorted by value, so search all
753 *lowp = *highp = TYPE_FIELD_BITPOS (type, 0);
754 for (i = 0; i < TYPE_NFIELDS (type); i++)
756 if (TYPE_FIELD_BITPOS (type, i) < *lowp)
757 *lowp = TYPE_FIELD_BITPOS (type, i);
758 if (TYPE_FIELD_BITPOS (type, i) > *highp)
759 *highp = TYPE_FIELD_BITPOS (type, i);
762 /* Set unsigned indicator if warranted. */
765 TYPE_UNSIGNED (type) = 1;
779 if (TYPE_LENGTH (type) > sizeof (LONGEST)) /* Too big */
781 if (!TYPE_UNSIGNED (type))
783 *lowp = -(1 << (TYPE_LENGTH (type) * TARGET_CHAR_BIT - 1));
787 /* ... fall through for unsigned ints ... */
790 /* This round-about calculation is to avoid shifting by
791 TYPE_LENGTH (type) * TARGET_CHAR_BIT, which will not work
792 if TYPE_LENGTH (type) == sizeof (LONGEST). */
793 *highp = 1 << (TYPE_LENGTH (type) * TARGET_CHAR_BIT - 1);
794 *highp = (*highp - 1) | *highp;
801 /* Create an array type using either a blank type supplied in
802 RESULT_TYPE, or creating a new type, inheriting the objfile from
805 Elements will be of type ELEMENT_TYPE, the indices will be of type
808 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
809 sure it is TYPE_CODE_UNDEF before we bash it into an array
813 create_array_type (struct type *result_type,
814 struct type *element_type,
815 struct type *range_type)
817 LONGEST low_bound, high_bound;
819 if (result_type == NULL)
820 result_type = alloc_type_copy (range_type);
822 TYPE_CODE (result_type) = TYPE_CODE_ARRAY;
823 TYPE_TARGET_TYPE (result_type) = element_type;
824 if (get_discrete_bounds (range_type, &low_bound, &high_bound) < 0)
825 low_bound = high_bound = 0;
826 CHECK_TYPEDEF (element_type);
827 /* Be careful when setting the array length. Ada arrays can be
828 empty arrays with the high_bound being smaller than the low_bound.
829 In such cases, the array length should be zero. */
830 if (high_bound < low_bound)
831 TYPE_LENGTH (result_type) = 0;
833 TYPE_LENGTH (result_type) =
834 TYPE_LENGTH (element_type) * (high_bound - low_bound + 1);
835 TYPE_NFIELDS (result_type) = 1;
836 TYPE_FIELDS (result_type) =
837 (struct field *) TYPE_ZALLOC (result_type, sizeof (struct field));
838 TYPE_INDEX_TYPE (result_type) = range_type;
839 TYPE_VPTR_FIELDNO (result_type) = -1;
841 /* TYPE_FLAG_TARGET_STUB will take care of zero length arrays */
842 if (TYPE_LENGTH (result_type) == 0)
843 TYPE_TARGET_STUB (result_type) = 1;
849 lookup_array_range_type (struct type *element_type,
850 int low_bound, int high_bound)
852 struct gdbarch *gdbarch = get_type_arch (element_type);
853 struct type *index_type = builtin_type (gdbarch)->builtin_int;
854 struct type *range_type
855 = create_range_type (NULL, index_type, low_bound, high_bound);
857 return create_array_type (NULL, element_type, range_type);
860 /* Create a string type using either a blank type supplied in
861 RESULT_TYPE, or creating a new type. String types are similar
862 enough to array of char types that we can use create_array_type to
863 build the basic type and then bash it into a string type.
865 For fixed length strings, the range type contains 0 as the lower
866 bound and the length of the string minus one as the upper bound.
868 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
869 sure it is TYPE_CODE_UNDEF before we bash it into a string
873 create_string_type (struct type *result_type,
874 struct type *string_char_type,
875 struct type *range_type)
877 result_type = create_array_type (result_type,
880 TYPE_CODE (result_type) = TYPE_CODE_STRING;
885 lookup_string_range_type (struct type *string_char_type,
886 int low_bound, int high_bound)
888 struct type *result_type;
890 result_type = lookup_array_range_type (string_char_type,
891 low_bound, high_bound);
892 TYPE_CODE (result_type) = TYPE_CODE_STRING;
897 create_set_type (struct type *result_type, struct type *domain_type)
899 if (result_type == NULL)
900 result_type = alloc_type_copy (domain_type);
902 TYPE_CODE (result_type) = TYPE_CODE_SET;
903 TYPE_NFIELDS (result_type) = 1;
904 TYPE_FIELDS (result_type) = TYPE_ZALLOC (result_type, sizeof (struct field));
906 if (!TYPE_STUB (domain_type))
908 LONGEST low_bound, high_bound, bit_length;
910 if (get_discrete_bounds (domain_type, &low_bound, &high_bound) < 0)
911 low_bound = high_bound = 0;
912 bit_length = high_bound - low_bound + 1;
913 TYPE_LENGTH (result_type)
914 = (bit_length + TARGET_CHAR_BIT - 1) / TARGET_CHAR_BIT;
916 TYPE_UNSIGNED (result_type) = 1;
918 TYPE_FIELD_TYPE (result_type, 0) = domain_type;
923 /* Convert ARRAY_TYPE to a vector type. This may modify ARRAY_TYPE
924 and any array types nested inside it. */
927 make_vector_type (struct type *array_type)
929 struct type *inner_array, *elt_type;
932 /* Find the innermost array type, in case the array is
933 multi-dimensional. */
934 inner_array = array_type;
935 while (TYPE_CODE (TYPE_TARGET_TYPE (inner_array)) == TYPE_CODE_ARRAY)
936 inner_array = TYPE_TARGET_TYPE (inner_array);
938 elt_type = TYPE_TARGET_TYPE (inner_array);
939 if (TYPE_CODE (elt_type) == TYPE_CODE_INT)
941 flags = TYPE_INSTANCE_FLAGS (elt_type) | TYPE_FLAG_NOTTEXT;
942 elt_type = make_qualified_type (elt_type, flags, NULL);
943 TYPE_TARGET_TYPE (inner_array) = elt_type;
946 TYPE_VECTOR (array_type) = 1;
950 init_vector_type (struct type *elt_type, int n)
952 struct type *array_type;
954 array_type = lookup_array_range_type (elt_type, 0, n - 1);
955 make_vector_type (array_type);
959 /* Smash TYPE to be a type of pointers to members of DOMAIN with type
960 TO_TYPE. A member pointer is a wierd thing -- it amounts to a
961 typed offset into a struct, e.g. "an int at offset 8". A MEMBER
962 TYPE doesn't include the offset (that's the value of the MEMBER
963 itself), but does include the structure type into which it points
966 When "smashing" the type, we preserve the objfile that the old type
967 pointed to, since we aren't changing where the type is actually
971 smash_to_memberptr_type (struct type *type, struct type *domain,
972 struct type *to_type)
975 TYPE_TARGET_TYPE (type) = to_type;
976 TYPE_DOMAIN_TYPE (type) = domain;
977 /* Assume that a data member pointer is the same size as a normal
980 = gdbarch_ptr_bit (get_type_arch (to_type)) / TARGET_CHAR_BIT;
981 TYPE_CODE (type) = TYPE_CODE_MEMBERPTR;
984 /* Smash TYPE to be a type of pointer to methods type TO_TYPE.
986 When "smashing" the type, we preserve the objfile that the old type
987 pointed to, since we aren't changing where the type is actually
991 smash_to_methodptr_type (struct type *type, struct type *to_type)
994 TYPE_TARGET_TYPE (type) = to_type;
995 TYPE_DOMAIN_TYPE (type) = TYPE_DOMAIN_TYPE (to_type);
996 TYPE_LENGTH (type) = cplus_method_ptr_size (to_type);
997 TYPE_CODE (type) = TYPE_CODE_METHODPTR;
1000 /* Smash TYPE to be a type of method of DOMAIN with type TO_TYPE.
1001 METHOD just means `function that gets an extra "this" argument'.
1003 When "smashing" the type, we preserve the objfile that the old type
1004 pointed to, since we aren't changing where the type is actually
1008 smash_to_method_type (struct type *type, struct type *domain,
1009 struct type *to_type, struct field *args,
1010 int nargs, int varargs)
1013 TYPE_TARGET_TYPE (type) = to_type;
1014 TYPE_DOMAIN_TYPE (type) = domain;
1015 TYPE_FIELDS (type) = args;
1016 TYPE_NFIELDS (type) = nargs;
1018 TYPE_VARARGS (type) = 1;
1019 TYPE_LENGTH (type) = 1; /* In practice, this is never needed. */
1020 TYPE_CODE (type) = TYPE_CODE_METHOD;
1023 /* Return a typename for a struct/union/enum type without "struct ",
1024 "union ", or "enum ". If the type has a NULL name, return NULL. */
1027 type_name_no_tag (const struct type *type)
1029 if (TYPE_TAG_NAME (type) != NULL)
1030 return TYPE_TAG_NAME (type);
1032 /* Is there code which expects this to return the name if there is
1033 no tag name? My guess is that this is mainly used for C++ in
1034 cases where the two will always be the same. */
1035 return TYPE_NAME (type);
1038 /* Lookup a typedef or primitive type named NAME, visible in lexical
1039 block BLOCK. If NOERR is nonzero, return zero if NAME is not
1040 suitably defined. */
1043 lookup_typename (const struct language_defn *language,
1044 struct gdbarch *gdbarch, char *name,
1045 struct block *block, int noerr)
1050 sym = lookup_symbol (name, block, VAR_DOMAIN, 0);
1051 if (sym == NULL || SYMBOL_CLASS (sym) != LOC_TYPEDEF)
1053 tmp = language_lookup_primitive_type_by_name (language, gdbarch, name);
1058 else if (!tmp && noerr)
1064 error (_("No type named %s."), name);
1067 return (SYMBOL_TYPE (sym));
1071 lookup_unsigned_typename (const struct language_defn *language,
1072 struct gdbarch *gdbarch, char *name)
1074 char *uns = alloca (strlen (name) + 10);
1076 strcpy (uns, "unsigned ");
1077 strcpy (uns + 9, name);
1078 return lookup_typename (language, gdbarch, uns, (struct block *) NULL, 0);
1082 lookup_signed_typename (const struct language_defn *language,
1083 struct gdbarch *gdbarch, char *name)
1086 char *uns = alloca (strlen (name) + 8);
1088 strcpy (uns, "signed ");
1089 strcpy (uns + 7, name);
1090 t = lookup_typename (language, gdbarch, uns, (struct block *) NULL, 1);
1091 /* If we don't find "signed FOO" just try again with plain "FOO". */
1094 return lookup_typename (language, gdbarch, name, (struct block *) NULL, 0);
1097 /* Lookup a structure type named "struct NAME",
1098 visible in lexical block BLOCK. */
1101 lookup_struct (char *name, struct block *block)
1105 sym = lookup_symbol (name, block, STRUCT_DOMAIN, 0);
1109 error (_("No struct type named %s."), name);
1111 if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_STRUCT)
1113 error (_("This context has class, union or enum %s, not a struct."),
1116 return (SYMBOL_TYPE (sym));
1119 /* Lookup a union type named "union NAME",
1120 visible in lexical block BLOCK. */
1123 lookup_union (char *name, struct block *block)
1128 sym = lookup_symbol (name, block, STRUCT_DOMAIN, 0);
1131 error (_("No union type named %s."), name);
1133 t = SYMBOL_TYPE (sym);
1135 if (TYPE_CODE (t) == TYPE_CODE_UNION)
1138 /* If we get here, it's not a union. */
1139 error (_("This context has class, struct or enum %s, not a union."),
1144 /* Lookup an enum type named "enum NAME",
1145 visible in lexical block BLOCK. */
1148 lookup_enum (char *name, struct block *block)
1152 sym = lookup_symbol (name, block, STRUCT_DOMAIN, 0);
1155 error (_("No enum type named %s."), name);
1157 if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_ENUM)
1159 error (_("This context has class, struct or union %s, not an enum."),
1162 return (SYMBOL_TYPE (sym));
1165 /* Lookup a template type named "template NAME<TYPE>",
1166 visible in lexical block BLOCK. */
1169 lookup_template_type (char *name, struct type *type,
1170 struct block *block)
1173 char *nam = (char *)
1174 alloca (strlen (name) + strlen (TYPE_NAME (type)) + 4);
1178 strcat (nam, TYPE_NAME (type));
1179 strcat (nam, " >"); /* FIXME, extra space still introduced in gcc? */
1181 sym = lookup_symbol (nam, block, VAR_DOMAIN, 0);
1185 error (_("No template type named %s."), name);
1187 if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_STRUCT)
1189 error (_("This context has class, union or enum %s, not a struct."),
1192 return (SYMBOL_TYPE (sym));
1195 /* Given a type TYPE, lookup the type of the component of type named
1198 TYPE can be either a struct or union, or a pointer or reference to
1199 a struct or union. If it is a pointer or reference, its target
1200 type is automatically used. Thus '.' and '->' are interchangable,
1201 as specified for the definitions of the expression element types
1202 STRUCTOP_STRUCT and STRUCTOP_PTR.
1204 If NOERR is nonzero, return zero if NAME is not suitably defined.
1205 If NAME is the name of a baseclass type, return that type. */
1208 lookup_struct_elt_type (struct type *type, char *name, int noerr)
1214 CHECK_TYPEDEF (type);
1215 if (TYPE_CODE (type) != TYPE_CODE_PTR
1216 && TYPE_CODE (type) != TYPE_CODE_REF)
1218 type = TYPE_TARGET_TYPE (type);
1221 if (TYPE_CODE (type) != TYPE_CODE_STRUCT
1222 && TYPE_CODE (type) != TYPE_CODE_UNION)
1224 target_terminal_ours ();
1225 gdb_flush (gdb_stdout);
1226 fprintf_unfiltered (gdb_stderr, "Type ");
1227 type_print (type, "", gdb_stderr, -1);
1228 error (_(" is not a structure or union type."));
1232 /* FIXME: This change put in by Michael seems incorrect for the case
1233 where the structure tag name is the same as the member name.
1234 I.E. when doing "ptype bell->bar" for "struct foo { int bar; int
1235 foo; } bell;" Disabled by fnf. */
1239 typename = type_name_no_tag (type);
1240 if (typename != NULL && strcmp (typename, name) == 0)
1245 for (i = TYPE_NFIELDS (type) - 1; i >= TYPE_N_BASECLASSES (type); i--)
1247 char *t_field_name = TYPE_FIELD_NAME (type, i);
1249 if (t_field_name && (strcmp_iw (t_field_name, name) == 0))
1251 return TYPE_FIELD_TYPE (type, i);
1253 else if (!t_field_name || *t_field_name == '\0')
1255 struct type *subtype
1256 = lookup_struct_elt_type (TYPE_FIELD_TYPE (type, i), name, 1);
1258 if (subtype != NULL)
1263 /* OK, it's not in this class. Recursively check the baseclasses. */
1264 for (i = TYPE_N_BASECLASSES (type) - 1; i >= 0; i--)
1268 t = lookup_struct_elt_type (TYPE_BASECLASS (type, i), name, 1);
1280 target_terminal_ours ();
1281 gdb_flush (gdb_stdout);
1282 fprintf_unfiltered (gdb_stderr, "Type ");
1283 type_print (type, "", gdb_stderr, -1);
1284 fprintf_unfiltered (gdb_stderr, " has no component named ");
1285 fputs_filtered (name, gdb_stderr);
1287 return (struct type *) -1; /* For lint */
1290 /* Lookup the vptr basetype/fieldno values for TYPE.
1291 If found store vptr_basetype in *BASETYPEP if non-NULL, and return
1292 vptr_fieldno. Also, if found and basetype is from the same objfile,
1294 If not found, return -1 and ignore BASETYPEP.
1295 Callers should be aware that in some cases (for example,
1296 the type or one of its baseclasses is a stub type and we are
1297 debugging a .o file, or the compiler uses DWARF-2 and is not GCC),
1298 this function will not be able to find the
1299 virtual function table pointer, and vptr_fieldno will remain -1 and
1300 vptr_basetype will remain NULL or incomplete. */
1303 get_vptr_fieldno (struct type *type, struct type **basetypep)
1305 CHECK_TYPEDEF (type);
1307 if (TYPE_VPTR_FIELDNO (type) < 0)
1311 /* We must start at zero in case the first (and only) baseclass
1312 is virtual (and hence we cannot share the table pointer). */
1313 for (i = 0; i < TYPE_N_BASECLASSES (type); i++)
1315 struct type *baseclass = check_typedef (TYPE_BASECLASS (type, i));
1317 struct type *basetype;
1319 fieldno = get_vptr_fieldno (baseclass, &basetype);
1322 /* If the type comes from a different objfile we can't cache
1323 it, it may have a different lifetime. PR 2384 */
1324 if (TYPE_OBJFILE (type) == TYPE_OBJFILE (basetype))
1326 TYPE_VPTR_FIELDNO (type) = fieldno;
1327 TYPE_VPTR_BASETYPE (type) = basetype;
1330 *basetypep = basetype;
1341 *basetypep = TYPE_VPTR_BASETYPE (type);
1342 return TYPE_VPTR_FIELDNO (type);
1347 stub_noname_complaint (void)
1349 complaint (&symfile_complaints, _("stub type has NULL name"));
1352 /* Added by Bryan Boreham, Kewill, Sun Sep 17 18:07:17 1989.
1354 If this is a stubbed struct (i.e. declared as struct foo *), see if
1355 we can find a full definition in some other file. If so, copy this
1356 definition, so we can use it in future. There used to be a comment
1357 (but not any code) that if we don't find a full definition, we'd
1358 set a flag so we don't spend time in the future checking the same
1359 type. That would be a mistake, though--we might load in more
1360 symbols which contain a full definition for the type.
1362 This used to be coded as a macro, but I don't think it is called
1363 often enough to merit such treatment.
1365 Find the real type of TYPE. This function returns the real type,
1366 after removing all layers of typedefs and completing opaque or stub
1367 types. Completion changes the TYPE argument, but stripping of
1370 If TYPE is a TYPE_CODE_TYPEDEF, its length is (also) set to the length of
1371 the target type instead of zero. However, in the case of TYPE_CODE_TYPEDEF
1372 check_typedef can still return different type than the original TYPE
1376 check_typedef (struct type *type)
1378 struct type *orig_type = type;
1379 int is_const, is_volatile;
1383 while (TYPE_CODE (type) == TYPE_CODE_TYPEDEF)
1385 if (!TYPE_TARGET_TYPE (type))
1390 /* It is dangerous to call lookup_symbol if we are currently
1391 reading a symtab. Infinite recursion is one danger. */
1392 if (currently_reading_symtab)
1395 name = type_name_no_tag (type);
1396 /* FIXME: shouldn't we separately check the TYPE_NAME and
1397 the TYPE_TAG_NAME, and look in STRUCT_DOMAIN and/or
1398 VAR_DOMAIN as appropriate? (this code was written before
1399 TYPE_NAME and TYPE_TAG_NAME were separate). */
1402 stub_noname_complaint ();
1405 sym = lookup_symbol (name, 0, STRUCT_DOMAIN, 0);
1407 TYPE_TARGET_TYPE (type) = SYMBOL_TYPE (sym);
1408 else /* TYPE_CODE_UNDEF */
1409 TYPE_TARGET_TYPE (type) = alloc_type_arch (get_type_arch (type));
1411 type = TYPE_TARGET_TYPE (type);
1414 is_const = TYPE_CONST (type);
1415 is_volatile = TYPE_VOLATILE (type);
1417 /* If this is a struct/class/union with no fields, then check
1418 whether a full definition exists somewhere else. This is for
1419 systems where a type definition with no fields is issued for such
1420 types, instead of identifying them as stub types in the first
1423 if (TYPE_IS_OPAQUE (type)
1424 && opaque_type_resolution
1425 && !currently_reading_symtab)
1427 char *name = type_name_no_tag (type);
1428 struct type *newtype;
1432 stub_noname_complaint ();
1435 newtype = lookup_transparent_type (name);
1439 /* If the resolved type and the stub are in the same
1440 objfile, then replace the stub type with the real deal.
1441 But if they're in separate objfiles, leave the stub
1442 alone; we'll just look up the transparent type every time
1443 we call check_typedef. We can't create pointers between
1444 types allocated to different objfiles, since they may
1445 have different lifetimes. Trying to copy NEWTYPE over to
1446 TYPE's objfile is pointless, too, since you'll have to
1447 move over any other types NEWTYPE refers to, which could
1448 be an unbounded amount of stuff. */
1449 if (TYPE_OBJFILE (newtype) == TYPE_OBJFILE (type))
1450 make_cv_type (is_const, is_volatile, newtype, &type);
1455 /* Otherwise, rely on the stub flag being set for opaque/stubbed
1457 else if (TYPE_STUB (type) && !currently_reading_symtab)
1459 char *name = type_name_no_tag (type);
1460 /* FIXME: shouldn't we separately check the TYPE_NAME and the
1461 TYPE_TAG_NAME, and look in STRUCT_DOMAIN and/or VAR_DOMAIN
1462 as appropriate? (this code was written before TYPE_NAME and
1463 TYPE_TAG_NAME were separate). */
1468 stub_noname_complaint ();
1471 sym = lookup_symbol (name, 0, STRUCT_DOMAIN, 0);
1474 /* Same as above for opaque types, we can replace the stub
1475 with the complete type only if they are int the same
1477 if (TYPE_OBJFILE (SYMBOL_TYPE(sym)) == TYPE_OBJFILE (type))
1478 make_cv_type (is_const, is_volatile,
1479 SYMBOL_TYPE (sym), &type);
1481 type = SYMBOL_TYPE (sym);
1485 if (TYPE_TARGET_STUB (type))
1487 struct type *range_type;
1488 struct type *target_type = check_typedef (TYPE_TARGET_TYPE (type));
1490 if (TYPE_STUB (target_type) || TYPE_TARGET_STUB (target_type))
1494 else if (TYPE_CODE (type) == TYPE_CODE_ARRAY
1495 && TYPE_NFIELDS (type) == 1
1496 && (TYPE_CODE (range_type = TYPE_INDEX_TYPE (type))
1497 == TYPE_CODE_RANGE))
1499 /* Now recompute the length of the array type, based on its
1500 number of elements and the target type's length.
1501 Watch out for Ada null Ada arrays where the high bound
1502 is smaller than the low bound. */
1503 const LONGEST low_bound = TYPE_LOW_BOUND (range_type);
1504 const LONGEST high_bound = TYPE_HIGH_BOUND (range_type);
1507 if (high_bound < low_bound)
1511 /* For now, we conservatively take the array length to be 0
1512 if its length exceeds UINT_MAX. The code below assumes
1513 that for x < 0, (ULONGEST) x == -x + ULONGEST_MAX + 1,
1514 which is technically not guaranteed by C, but is usually true
1515 (because it would be true if x were unsigned with its
1516 high-order bit on). It uses the fact that
1517 high_bound-low_bound is always representable in
1518 ULONGEST and that if high_bound-low_bound+1 overflows,
1519 it overflows to 0. We must change these tests if we
1520 decide to increase the representation of TYPE_LENGTH
1521 from unsigned int to ULONGEST. */
1522 ULONGEST ulow = low_bound, uhigh = high_bound;
1523 ULONGEST tlen = TYPE_LENGTH (target_type);
1525 len = tlen * (uhigh - ulow + 1);
1526 if (tlen == 0 || (len / tlen - 1 + ulow) != uhigh
1530 TYPE_LENGTH (type) = len;
1531 TYPE_TARGET_STUB (type) = 0;
1533 else if (TYPE_CODE (type) == TYPE_CODE_RANGE)
1535 TYPE_LENGTH (type) = TYPE_LENGTH (target_type);
1536 TYPE_TARGET_STUB (type) = 0;
1539 /* Cache TYPE_LENGTH for future use. */
1540 TYPE_LENGTH (orig_type) = TYPE_LENGTH (type);
1544 /* Parse a type expression in the string [P..P+LENGTH). If an error
1545 occurs, silently return a void type. */
1547 static struct type *
1548 safe_parse_type (struct gdbarch *gdbarch, char *p, int length)
1550 struct ui_file *saved_gdb_stderr;
1553 /* Suppress error messages. */
1554 saved_gdb_stderr = gdb_stderr;
1555 gdb_stderr = ui_file_new ();
1557 /* Call parse_and_eval_type() without fear of longjmp()s. */
1558 if (!gdb_parse_and_eval_type (p, length, &type))
1559 type = builtin_type (gdbarch)->builtin_void;
1561 /* Stop suppressing error messages. */
1562 ui_file_delete (gdb_stderr);
1563 gdb_stderr = saved_gdb_stderr;
1568 /* Ugly hack to convert method stubs into method types.
1570 He ain't kiddin'. This demangles the name of the method into a
1571 string including argument types, parses out each argument type,
1572 generates a string casting a zero to that type, evaluates the
1573 string, and stuffs the resulting type into an argtype vector!!!
1574 Then it knows the type of the whole function (including argument
1575 types for overloading), which info used to be in the stab's but was
1576 removed to hack back the space required for them. */
1579 check_stub_method (struct type *type, int method_id, int signature_id)
1581 struct gdbarch *gdbarch = get_type_arch (type);
1583 char *mangled_name = gdb_mangle_name (type, method_id, signature_id);
1584 char *demangled_name = cplus_demangle (mangled_name,
1585 DMGL_PARAMS | DMGL_ANSI);
1586 char *argtypetext, *p;
1587 int depth = 0, argcount = 1;
1588 struct field *argtypes;
1591 /* Make sure we got back a function string that we can use. */
1593 p = strchr (demangled_name, '(');
1597 if (demangled_name == NULL || p == NULL)
1598 error (_("Internal: Cannot demangle mangled name `%s'."),
1601 /* Now, read in the parameters that define this type. */
1606 if (*p == '(' || *p == '<')
1610 else if (*p == ')' || *p == '>')
1614 else if (*p == ',' && depth == 0)
1622 /* If we read one argument and it was ``void'', don't count it. */
1623 if (strncmp (argtypetext, "(void)", 6) == 0)
1626 /* We need one extra slot, for the THIS pointer. */
1628 argtypes = (struct field *)
1629 TYPE_ALLOC (type, (argcount + 1) * sizeof (struct field));
1632 /* Add THIS pointer for non-static methods. */
1633 f = TYPE_FN_FIELDLIST1 (type, method_id);
1634 if (TYPE_FN_FIELD_STATIC_P (f, signature_id))
1638 argtypes[0].type = lookup_pointer_type (type);
1642 if (*p != ')') /* () means no args, skip while */
1647 if (depth <= 0 && (*p == ',' || *p == ')'))
1649 /* Avoid parsing of ellipsis, they will be handled below.
1650 Also avoid ``void'' as above. */
1651 if (strncmp (argtypetext, "...", p - argtypetext) != 0
1652 && strncmp (argtypetext, "void", p - argtypetext) != 0)
1654 argtypes[argcount].type =
1655 safe_parse_type (gdbarch, argtypetext, p - argtypetext);
1658 argtypetext = p + 1;
1661 if (*p == '(' || *p == '<')
1665 else if (*p == ')' || *p == '>')
1674 TYPE_FN_FIELD_PHYSNAME (f, signature_id) = mangled_name;
1676 /* Now update the old "stub" type into a real type. */
1677 mtype = TYPE_FN_FIELD_TYPE (f, signature_id);
1678 TYPE_DOMAIN_TYPE (mtype) = type;
1679 TYPE_FIELDS (mtype) = argtypes;
1680 TYPE_NFIELDS (mtype) = argcount;
1681 TYPE_STUB (mtype) = 0;
1682 TYPE_FN_FIELD_STUB (f, signature_id) = 0;
1684 TYPE_VARARGS (mtype) = 1;
1686 xfree (demangled_name);
1689 /* This is the external interface to check_stub_method, above. This
1690 function unstubs all of the signatures for TYPE's METHOD_ID method
1691 name. After calling this function TYPE_FN_FIELD_STUB will be
1692 cleared for each signature and TYPE_FN_FIELDLIST_NAME will be
1695 This function unfortunately can not die until stabs do. */
1698 check_stub_method_group (struct type *type, int method_id)
1700 int len = TYPE_FN_FIELDLIST_LENGTH (type, method_id);
1701 struct fn_field *f = TYPE_FN_FIELDLIST1 (type, method_id);
1702 int j, found_stub = 0;
1704 for (j = 0; j < len; j++)
1705 if (TYPE_FN_FIELD_STUB (f, j))
1708 check_stub_method (type, method_id, j);
1711 /* GNU v3 methods with incorrect names were corrected when we read
1712 in type information, because it was cheaper to do it then. The
1713 only GNU v2 methods with incorrect method names are operators and
1714 destructors; destructors were also corrected when we read in type
1717 Therefore the only thing we need to handle here are v2 operator
1719 if (found_stub && strncmp (TYPE_FN_FIELD_PHYSNAME (f, 0), "_Z", 2) != 0)
1722 char dem_opname[256];
1724 ret = cplus_demangle_opname (TYPE_FN_FIELDLIST_NAME (type,
1726 dem_opname, DMGL_ANSI);
1728 ret = cplus_demangle_opname (TYPE_FN_FIELDLIST_NAME (type,
1732 TYPE_FN_FIELDLIST_NAME (type, method_id) = xstrdup (dem_opname);
1736 /* Ensure it is in .rodata (if available) by workarounding GCC PR 44690. */
1737 const struct cplus_struct_type cplus_struct_default = { };
1740 allocate_cplus_struct_type (struct type *type)
1742 if (HAVE_CPLUS_STRUCT (type))
1743 /* Structure was already allocated. Nothing more to do. */
1746 TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_CPLUS_STUFF;
1747 TYPE_RAW_CPLUS_SPECIFIC (type) = (struct cplus_struct_type *)
1748 TYPE_ALLOC (type, sizeof (struct cplus_struct_type));
1749 *(TYPE_RAW_CPLUS_SPECIFIC (type)) = cplus_struct_default;
1752 const struct gnat_aux_type gnat_aux_default =
1755 /* Set the TYPE's type-specific kind to TYPE_SPECIFIC_GNAT_STUFF,
1756 and allocate the associated gnat-specific data. The gnat-specific
1757 data is also initialized to gnat_aux_default. */
1759 allocate_gnat_aux_type (struct type *type)
1761 TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_GNAT_STUFF;
1762 TYPE_GNAT_SPECIFIC (type) = (struct gnat_aux_type *)
1763 TYPE_ALLOC (type, sizeof (struct gnat_aux_type));
1764 *(TYPE_GNAT_SPECIFIC (type)) = gnat_aux_default;
1768 /* Helper function to initialize the standard scalar types.
1770 If NAME is non-NULL, then we make a copy of the string pointed
1771 to by name in the objfile_obstack for that objfile, and initialize
1772 the type name to that copy. There are places (mipsread.c in particular),
1773 where init_type is called with a NULL value for NAME). */
1776 init_type (enum type_code code, int length, int flags,
1777 char *name, struct objfile *objfile)
1781 type = alloc_type (objfile);
1782 TYPE_CODE (type) = code;
1783 TYPE_LENGTH (type) = length;
1785 gdb_assert (!(flags & (TYPE_FLAG_MIN - 1)));
1786 if (flags & TYPE_FLAG_UNSIGNED)
1787 TYPE_UNSIGNED (type) = 1;
1788 if (flags & TYPE_FLAG_NOSIGN)
1789 TYPE_NOSIGN (type) = 1;
1790 if (flags & TYPE_FLAG_STUB)
1791 TYPE_STUB (type) = 1;
1792 if (flags & TYPE_FLAG_TARGET_STUB)
1793 TYPE_TARGET_STUB (type) = 1;
1794 if (flags & TYPE_FLAG_STATIC)
1795 TYPE_STATIC (type) = 1;
1796 if (flags & TYPE_FLAG_PROTOTYPED)
1797 TYPE_PROTOTYPED (type) = 1;
1798 if (flags & TYPE_FLAG_INCOMPLETE)
1799 TYPE_INCOMPLETE (type) = 1;
1800 if (flags & TYPE_FLAG_VARARGS)
1801 TYPE_VARARGS (type) = 1;
1802 if (flags & TYPE_FLAG_VECTOR)
1803 TYPE_VECTOR (type) = 1;
1804 if (flags & TYPE_FLAG_STUB_SUPPORTED)
1805 TYPE_STUB_SUPPORTED (type) = 1;
1806 if (flags & TYPE_FLAG_NOTTEXT)
1807 TYPE_NOTTEXT (type) = 1;
1808 if (flags & TYPE_FLAG_FIXED_INSTANCE)
1809 TYPE_FIXED_INSTANCE (type) = 1;
1812 TYPE_NAME (type) = obsavestring (name, strlen (name),
1813 &objfile->objfile_obstack);
1817 if (name && strcmp (name, "char") == 0)
1818 TYPE_NOSIGN (type) = 1;
1822 case TYPE_CODE_STRUCT:
1823 case TYPE_CODE_UNION:
1824 case TYPE_CODE_NAMESPACE:
1825 INIT_CPLUS_SPECIFIC (type);
1828 TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_FLOATFORMAT;
1830 case TYPE_CODE_FUNC:
1831 TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_CALLING_CONVENTION;
1838 can_dereference (struct type *t)
1840 /* FIXME: Should we return true for references as well as
1845 && TYPE_CODE (t) == TYPE_CODE_PTR
1846 && TYPE_CODE (TYPE_TARGET_TYPE (t)) != TYPE_CODE_VOID);
1850 is_integral_type (struct type *t)
1855 && ((TYPE_CODE (t) == TYPE_CODE_INT)
1856 || (TYPE_CODE (t) == TYPE_CODE_ENUM)
1857 || (TYPE_CODE (t) == TYPE_CODE_FLAGS)
1858 || (TYPE_CODE (t) == TYPE_CODE_CHAR)
1859 || (TYPE_CODE (t) == TYPE_CODE_RANGE)
1860 || (TYPE_CODE (t) == TYPE_CODE_BOOL)));
1863 /* A helper function which returns true if types A and B represent the
1864 "same" class type. This is true if the types have the same main
1865 type, or the same name. */
1868 class_types_same_p (const struct type *a, const struct type *b)
1870 return (TYPE_MAIN_TYPE (a) == TYPE_MAIN_TYPE (b)
1871 || (TYPE_NAME (a) && TYPE_NAME (b)
1872 && !strcmp (TYPE_NAME (a), TYPE_NAME (b))));
1875 /* Check whether BASE is an ancestor or base class or DCLASS
1876 Return 1 if so, and 0 if not.
1877 Note: callers may want to check for identity of the types before
1878 calling this function -- identical types are considered to satisfy
1879 the ancestor relationship even if they're identical. */
1882 is_ancestor (struct type *base, struct type *dclass)
1886 CHECK_TYPEDEF (base);
1887 CHECK_TYPEDEF (dclass);
1889 if (class_types_same_p (base, dclass))
1892 for (i = 0; i < TYPE_N_BASECLASSES (dclass); i++)
1894 if (is_ancestor (base, TYPE_BASECLASS (dclass, i)))
1901 /* Like is_ancestor, but only returns true when BASE is a public
1902 ancestor of DCLASS. */
1905 is_public_ancestor (struct type *base, struct type *dclass)
1909 CHECK_TYPEDEF (base);
1910 CHECK_TYPEDEF (dclass);
1912 if (class_types_same_p (base, dclass))
1915 for (i = 0; i < TYPE_N_BASECLASSES (dclass); ++i)
1917 if (! BASETYPE_VIA_PUBLIC (dclass, i))
1919 if (is_public_ancestor (base, TYPE_BASECLASS (dclass, i)))
1926 /* A helper function for is_unique_ancestor. */
1929 is_unique_ancestor_worker (struct type *base, struct type *dclass,
1931 const bfd_byte *contents, CORE_ADDR address)
1935 CHECK_TYPEDEF (base);
1936 CHECK_TYPEDEF (dclass);
1938 for (i = 0; i < TYPE_N_BASECLASSES (dclass) && count < 2; ++i)
1940 struct type *iter = check_typedef (TYPE_BASECLASS (dclass, i));
1941 int this_offset = baseclass_offset (dclass, i, contents, address);
1943 if (this_offset == -1)
1944 error (_("virtual baseclass botch"));
1946 if (class_types_same_p (base, iter))
1948 /* If this is the first subclass, set *OFFSET and set count
1949 to 1. Otherwise, if this is at the same offset as
1950 previous instances, do nothing. Otherwise, increment
1954 *offset = this_offset;
1957 else if (this_offset == *offset)
1965 count += is_unique_ancestor_worker (base, iter, offset,
1966 contents + this_offset,
1967 address + this_offset);
1973 /* Like is_ancestor, but only returns true if BASE is a unique base
1974 class of the type of VAL. */
1977 is_unique_ancestor (struct type *base, struct value *val)
1981 return is_unique_ancestor_worker (base, value_type (val), &offset,
1982 value_contents (val),
1983 value_address (val)) == 1;
1989 /* Functions for overload resolution begin here */
1991 /* Compare two badness vectors A and B and return the result.
1992 0 => A and B are identical
1993 1 => A and B are incomparable
1994 2 => A is better than B
1995 3 => A is worse than B */
1998 compare_badness (struct badness_vector *a, struct badness_vector *b)
2002 short found_pos = 0; /* any positives in c? */
2003 short found_neg = 0; /* any negatives in c? */
2005 /* differing lengths => incomparable */
2006 if (a->length != b->length)
2009 /* Subtract b from a */
2010 for (i = 0; i < a->length; i++)
2012 tmp = a->rank[i] - b->rank[i];
2022 return 1; /* incomparable */
2024 return 3; /* A > B */
2030 return 2; /* A < B */
2032 return 0; /* A == B */
2036 /* Rank a function by comparing its parameter types (PARMS, length
2037 NPARMS), to the types of an argument list (ARGS, length NARGS).
2038 Return a pointer to a badness vector. This has NARGS + 1
2041 struct badness_vector *
2042 rank_function (struct type **parms, int nparms,
2043 struct type **args, int nargs)
2046 struct badness_vector *bv;
2047 int min_len = nparms < nargs ? nparms : nargs;
2049 bv = xmalloc (sizeof (struct badness_vector));
2050 bv->length = nargs + 1; /* add 1 for the length-match rank */
2051 bv->rank = xmalloc ((nargs + 1) * sizeof (int));
2053 /* First compare the lengths of the supplied lists.
2054 If there is a mismatch, set it to a high value. */
2056 /* pai/1997-06-03 FIXME: when we have debug info about default
2057 arguments and ellipsis parameter lists, we should consider those
2058 and rank the length-match more finely. */
2060 LENGTH_MATCH (bv) = (nargs != nparms) ? LENGTH_MISMATCH_BADNESS : 0;
2062 /* Now rank all the parameters of the candidate function */
2063 for (i = 1; i <= min_len; i++)
2064 bv->rank[i] = rank_one_type (parms[i-1], args[i-1]);
2066 /* If more arguments than parameters, add dummy entries */
2067 for (i = min_len + 1; i <= nargs; i++)
2068 bv->rank[i] = TOO_FEW_PARAMS_BADNESS;
2073 /* Compare the names of two integer types, assuming that any sign
2074 qualifiers have been checked already. We do it this way because
2075 there may be an "int" in the name of one of the types. */
2078 integer_types_same_name_p (const char *first, const char *second)
2080 int first_p, second_p;
2082 /* If both are shorts, return 1; if neither is a short, keep
2084 first_p = (strstr (first, "short") != NULL);
2085 second_p = (strstr (second, "short") != NULL);
2086 if (first_p && second_p)
2088 if (first_p || second_p)
2091 /* Likewise for long. */
2092 first_p = (strstr (first, "long") != NULL);
2093 second_p = (strstr (second, "long") != NULL);
2094 if (first_p && second_p)
2096 if (first_p || second_p)
2099 /* Likewise for char. */
2100 first_p = (strstr (first, "char") != NULL);
2101 second_p = (strstr (second, "char") != NULL);
2102 if (first_p && second_p)
2104 if (first_p || second_p)
2107 /* They must both be ints. */
2111 /* Compare one type (PARM) for compatibility with another (ARG).
2112 * PARM is intended to be the parameter type of a function; and
2113 * ARG is the supplied argument's type. This function tests if
2114 * the latter can be converted to the former.
2116 * Return 0 if they are identical types;
2117 * Otherwise, return an integer which corresponds to how compatible
2118 * PARM is to ARG. The higher the return value, the worse the match.
2119 * Generally the "bad" conversions are all uniformly assigned a 100. */
2122 rank_one_type (struct type *parm, struct type *arg)
2124 /* Identical type pointers. */
2125 /* However, this still doesn't catch all cases of same type for arg
2126 and param. The reason is that builtin types are different from
2127 the same ones constructed from the object. */
2131 /* Resolve typedefs */
2132 if (TYPE_CODE (parm) == TYPE_CODE_TYPEDEF)
2133 parm = check_typedef (parm);
2134 if (TYPE_CODE (arg) == TYPE_CODE_TYPEDEF)
2135 arg = check_typedef (arg);
2138 Well, damnit, if the names are exactly the same, I'll say they
2139 are exactly the same. This happens when we generate method
2140 stubs. The types won't point to the same address, but they
2141 really are the same.
2144 if (TYPE_NAME (parm) && TYPE_NAME (arg)
2145 && !strcmp (TYPE_NAME (parm), TYPE_NAME (arg)))
2148 /* Check if identical after resolving typedefs. */
2152 /* See through references, since we can almost make non-references
2154 if (TYPE_CODE (arg) == TYPE_CODE_REF)
2155 return (rank_one_type (parm, TYPE_TARGET_TYPE (arg))
2156 + REFERENCE_CONVERSION_BADNESS);
2157 if (TYPE_CODE (parm) == TYPE_CODE_REF)
2158 return (rank_one_type (TYPE_TARGET_TYPE (parm), arg)
2159 + REFERENCE_CONVERSION_BADNESS);
2161 /* Debugging only. */
2162 fprintf_filtered (gdb_stderr,
2163 "------ Arg is %s [%d], parm is %s [%d]\n",
2164 TYPE_NAME (arg), TYPE_CODE (arg),
2165 TYPE_NAME (parm), TYPE_CODE (parm));
2167 /* x -> y means arg of type x being supplied for parameter of type y */
2169 switch (TYPE_CODE (parm))
2172 switch (TYPE_CODE (arg))
2175 if (TYPE_CODE (TYPE_TARGET_TYPE (parm)) == TYPE_CODE_VOID
2176 && TYPE_CODE (TYPE_TARGET_TYPE (arg)) != TYPE_CODE_VOID)
2177 return VOID_PTR_CONVERSION_BADNESS;
2179 return rank_one_type (TYPE_TARGET_TYPE (parm),
2180 TYPE_TARGET_TYPE (arg));
2181 case TYPE_CODE_ARRAY:
2182 return rank_one_type (TYPE_TARGET_TYPE (parm),
2183 TYPE_TARGET_TYPE (arg));
2184 case TYPE_CODE_FUNC:
2185 return rank_one_type (TYPE_TARGET_TYPE (parm), arg);
2187 case TYPE_CODE_ENUM:
2188 case TYPE_CODE_FLAGS:
2189 case TYPE_CODE_CHAR:
2190 case TYPE_CODE_RANGE:
2191 case TYPE_CODE_BOOL:
2192 return POINTER_CONVERSION_BADNESS;
2194 return INCOMPATIBLE_TYPE_BADNESS;
2196 case TYPE_CODE_ARRAY:
2197 switch (TYPE_CODE (arg))
2200 case TYPE_CODE_ARRAY:
2201 return rank_one_type (TYPE_TARGET_TYPE (parm),
2202 TYPE_TARGET_TYPE (arg));
2204 return INCOMPATIBLE_TYPE_BADNESS;
2206 case TYPE_CODE_FUNC:
2207 switch (TYPE_CODE (arg))
2209 case TYPE_CODE_PTR: /* funcptr -> func */
2210 return rank_one_type (parm, TYPE_TARGET_TYPE (arg));
2212 return INCOMPATIBLE_TYPE_BADNESS;
2215 switch (TYPE_CODE (arg))
2218 if (TYPE_LENGTH (arg) == TYPE_LENGTH (parm))
2220 /* Deal with signed, unsigned, and plain chars and
2221 signed and unsigned ints. */
2222 if (TYPE_NOSIGN (parm))
2224 /* This case only for character types */
2225 if (TYPE_NOSIGN (arg))
2226 return 0; /* plain char -> plain char */
2227 else /* signed/unsigned char -> plain char */
2228 return INTEGER_CONVERSION_BADNESS;
2230 else if (TYPE_UNSIGNED (parm))
2232 if (TYPE_UNSIGNED (arg))
2234 /* unsigned int -> unsigned int, or
2235 unsigned long -> unsigned long */
2236 if (integer_types_same_name_p (TYPE_NAME (parm),
2239 else if (integer_types_same_name_p (TYPE_NAME (arg),
2241 && integer_types_same_name_p (TYPE_NAME (parm),
2243 return INTEGER_PROMOTION_BADNESS; /* unsigned int -> unsigned long */
2245 return INTEGER_CONVERSION_BADNESS; /* unsigned long -> unsigned int */
2249 if (integer_types_same_name_p (TYPE_NAME (arg),
2251 && integer_types_same_name_p (TYPE_NAME (parm),
2253 return INTEGER_CONVERSION_BADNESS; /* signed long -> unsigned int */
2255 return INTEGER_CONVERSION_BADNESS; /* signed int/long -> unsigned int/long */
2258 else if (!TYPE_NOSIGN (arg) && !TYPE_UNSIGNED (arg))
2260 if (integer_types_same_name_p (TYPE_NAME (parm),
2263 else if (integer_types_same_name_p (TYPE_NAME (arg),
2265 && integer_types_same_name_p (TYPE_NAME (parm),
2267 return INTEGER_PROMOTION_BADNESS;
2269 return INTEGER_CONVERSION_BADNESS;
2272 return INTEGER_CONVERSION_BADNESS;
2274 else if (TYPE_LENGTH (arg) < TYPE_LENGTH (parm))
2275 return INTEGER_PROMOTION_BADNESS;
2277 return INTEGER_CONVERSION_BADNESS;
2278 case TYPE_CODE_ENUM:
2279 case TYPE_CODE_FLAGS:
2280 case TYPE_CODE_CHAR:
2281 case TYPE_CODE_RANGE:
2282 case TYPE_CODE_BOOL:
2283 return INTEGER_PROMOTION_BADNESS;
2285 return INT_FLOAT_CONVERSION_BADNESS;
2287 return NS_POINTER_CONVERSION_BADNESS;
2289 return INCOMPATIBLE_TYPE_BADNESS;
2292 case TYPE_CODE_ENUM:
2293 switch (TYPE_CODE (arg))
2296 case TYPE_CODE_CHAR:
2297 case TYPE_CODE_RANGE:
2298 case TYPE_CODE_BOOL:
2299 case TYPE_CODE_ENUM:
2300 return INTEGER_CONVERSION_BADNESS;
2302 return INT_FLOAT_CONVERSION_BADNESS;
2304 return INCOMPATIBLE_TYPE_BADNESS;
2307 case TYPE_CODE_CHAR:
2308 switch (TYPE_CODE (arg))
2310 case TYPE_CODE_RANGE:
2311 case TYPE_CODE_BOOL:
2312 case TYPE_CODE_ENUM:
2313 return INTEGER_CONVERSION_BADNESS;
2315 return INT_FLOAT_CONVERSION_BADNESS;
2317 if (TYPE_LENGTH (arg) > TYPE_LENGTH (parm))
2318 return INTEGER_CONVERSION_BADNESS;
2319 else if (TYPE_LENGTH (arg) < TYPE_LENGTH (parm))
2320 return INTEGER_PROMOTION_BADNESS;
2321 /* >>> !! else fall through !! <<< */
2322 case TYPE_CODE_CHAR:
2323 /* Deal with signed, unsigned, and plain chars for C++ and
2324 with int cases falling through from previous case. */
2325 if (TYPE_NOSIGN (parm))
2327 if (TYPE_NOSIGN (arg))
2330 return INTEGER_CONVERSION_BADNESS;
2332 else if (TYPE_UNSIGNED (parm))
2334 if (TYPE_UNSIGNED (arg))
2337 return INTEGER_PROMOTION_BADNESS;
2339 else if (!TYPE_NOSIGN (arg) && !TYPE_UNSIGNED (arg))
2342 return INTEGER_CONVERSION_BADNESS;
2344 return INCOMPATIBLE_TYPE_BADNESS;
2347 case TYPE_CODE_RANGE:
2348 switch (TYPE_CODE (arg))
2351 case TYPE_CODE_CHAR:
2352 case TYPE_CODE_RANGE:
2353 case TYPE_CODE_BOOL:
2354 case TYPE_CODE_ENUM:
2355 return INTEGER_CONVERSION_BADNESS;
2357 return INT_FLOAT_CONVERSION_BADNESS;
2359 return INCOMPATIBLE_TYPE_BADNESS;
2362 case TYPE_CODE_BOOL:
2363 switch (TYPE_CODE (arg))
2366 case TYPE_CODE_CHAR:
2367 case TYPE_CODE_RANGE:
2368 case TYPE_CODE_ENUM:
2371 return BOOLEAN_CONVERSION_BADNESS;
2372 case TYPE_CODE_BOOL:
2375 return INCOMPATIBLE_TYPE_BADNESS;
2379 switch (TYPE_CODE (arg))
2382 if (TYPE_LENGTH (arg) < TYPE_LENGTH (parm))
2383 return FLOAT_PROMOTION_BADNESS;
2384 else if (TYPE_LENGTH (arg) == TYPE_LENGTH (parm))
2387 return FLOAT_CONVERSION_BADNESS;
2389 case TYPE_CODE_BOOL:
2390 case TYPE_CODE_ENUM:
2391 case TYPE_CODE_RANGE:
2392 case TYPE_CODE_CHAR:
2393 return INT_FLOAT_CONVERSION_BADNESS;
2395 return INCOMPATIBLE_TYPE_BADNESS;
2398 case TYPE_CODE_COMPLEX:
2399 switch (TYPE_CODE (arg))
2400 { /* Strictly not needed for C++, but... */
2402 return FLOAT_PROMOTION_BADNESS;
2403 case TYPE_CODE_COMPLEX:
2406 return INCOMPATIBLE_TYPE_BADNESS;
2409 case TYPE_CODE_STRUCT:
2410 /* currently same as TYPE_CODE_CLASS */
2411 switch (TYPE_CODE (arg))
2413 case TYPE_CODE_STRUCT:
2414 /* Check for derivation */
2415 if (is_ancestor (parm, arg))
2416 return BASE_CONVERSION_BADNESS;
2417 /* else fall through */
2419 return INCOMPATIBLE_TYPE_BADNESS;
2422 case TYPE_CODE_UNION:
2423 switch (TYPE_CODE (arg))
2425 case TYPE_CODE_UNION:
2427 return INCOMPATIBLE_TYPE_BADNESS;
2430 case TYPE_CODE_MEMBERPTR:
2431 switch (TYPE_CODE (arg))
2434 return INCOMPATIBLE_TYPE_BADNESS;
2437 case TYPE_CODE_METHOD:
2438 switch (TYPE_CODE (arg))
2442 return INCOMPATIBLE_TYPE_BADNESS;
2446 switch (TYPE_CODE (arg))
2450 return INCOMPATIBLE_TYPE_BADNESS;
2455 switch (TYPE_CODE (arg))
2459 return rank_one_type (TYPE_FIELD_TYPE (parm, 0),
2460 TYPE_FIELD_TYPE (arg, 0));
2462 return INCOMPATIBLE_TYPE_BADNESS;
2465 case TYPE_CODE_VOID:
2467 return INCOMPATIBLE_TYPE_BADNESS;
2468 } /* switch (TYPE_CODE (arg)) */
2472 /* End of functions for overload resolution */
2475 print_bit_vector (B_TYPE *bits, int nbits)
2479 for (bitno = 0; bitno < nbits; bitno++)
2481 if ((bitno % 8) == 0)
2483 puts_filtered (" ");
2485 if (B_TST (bits, bitno))
2486 printf_filtered (("1"));
2488 printf_filtered (("0"));
2492 /* Note the first arg should be the "this" pointer, we may not want to
2493 include it since we may get into a infinitely recursive
2497 print_arg_types (struct field *args, int nargs, int spaces)
2503 for (i = 0; i < nargs; i++)
2504 recursive_dump_type (args[i].type, spaces + 2);
2509 field_is_static (struct field *f)
2511 /* "static" fields are the fields whose location is not relative
2512 to the address of the enclosing struct. It would be nice to
2513 have a dedicated flag that would be set for static fields when
2514 the type is being created. But in practice, checking the field
2515 loc_kind should give us an accurate answer. */
2516 return (FIELD_LOC_KIND (*f) == FIELD_LOC_KIND_PHYSNAME
2517 || FIELD_LOC_KIND (*f) == FIELD_LOC_KIND_PHYSADDR);
2521 dump_fn_fieldlists (struct type *type, int spaces)
2527 printfi_filtered (spaces, "fn_fieldlists ");
2528 gdb_print_host_address (TYPE_FN_FIELDLISTS (type), gdb_stdout);
2529 printf_filtered ("\n");
2530 for (method_idx = 0; method_idx < TYPE_NFN_FIELDS (type); method_idx++)
2532 f = TYPE_FN_FIELDLIST1 (type, method_idx);
2533 printfi_filtered (spaces + 2, "[%d] name '%s' (",
2535 TYPE_FN_FIELDLIST_NAME (type, method_idx));
2536 gdb_print_host_address (TYPE_FN_FIELDLIST_NAME (type, method_idx),
2538 printf_filtered (_(") length %d\n"),
2539 TYPE_FN_FIELDLIST_LENGTH (type, method_idx));
2540 for (overload_idx = 0;
2541 overload_idx < TYPE_FN_FIELDLIST_LENGTH (type, method_idx);
2544 printfi_filtered (spaces + 4, "[%d] physname '%s' (",
2546 TYPE_FN_FIELD_PHYSNAME (f, overload_idx));
2547 gdb_print_host_address (TYPE_FN_FIELD_PHYSNAME (f, overload_idx),
2549 printf_filtered (")\n");
2550 printfi_filtered (spaces + 8, "type ");
2551 gdb_print_host_address (TYPE_FN_FIELD_TYPE (f, overload_idx),
2553 printf_filtered ("\n");
2555 recursive_dump_type (TYPE_FN_FIELD_TYPE (f, overload_idx),
2558 printfi_filtered (spaces + 8, "args ");
2559 gdb_print_host_address (TYPE_FN_FIELD_ARGS (f, overload_idx),
2561 printf_filtered ("\n");
2563 print_arg_types (TYPE_FN_FIELD_ARGS (f, overload_idx),
2564 TYPE_NFIELDS (TYPE_FN_FIELD_TYPE (f,
2567 printfi_filtered (spaces + 8, "fcontext ");
2568 gdb_print_host_address (TYPE_FN_FIELD_FCONTEXT (f, overload_idx),
2570 printf_filtered ("\n");
2572 printfi_filtered (spaces + 8, "is_const %d\n",
2573 TYPE_FN_FIELD_CONST (f, overload_idx));
2574 printfi_filtered (spaces + 8, "is_volatile %d\n",
2575 TYPE_FN_FIELD_VOLATILE (f, overload_idx));
2576 printfi_filtered (spaces + 8, "is_private %d\n",
2577 TYPE_FN_FIELD_PRIVATE (f, overload_idx));
2578 printfi_filtered (spaces + 8, "is_protected %d\n",
2579 TYPE_FN_FIELD_PROTECTED (f, overload_idx));
2580 printfi_filtered (spaces + 8, "is_stub %d\n",
2581 TYPE_FN_FIELD_STUB (f, overload_idx));
2582 printfi_filtered (spaces + 8, "voffset %u\n",
2583 TYPE_FN_FIELD_VOFFSET (f, overload_idx));
2589 print_cplus_stuff (struct type *type, int spaces)
2591 printfi_filtered (spaces, "n_baseclasses %d\n",
2592 TYPE_N_BASECLASSES (type));
2593 printfi_filtered (spaces, "nfn_fields %d\n",
2594 TYPE_NFN_FIELDS (type));
2595 printfi_filtered (spaces, "nfn_fields_total %d\n",
2596 TYPE_NFN_FIELDS_TOTAL (type));
2597 if (TYPE_N_BASECLASSES (type) > 0)
2599 printfi_filtered (spaces, "virtual_field_bits (%d bits at *",
2600 TYPE_N_BASECLASSES (type));
2601 gdb_print_host_address (TYPE_FIELD_VIRTUAL_BITS (type),
2603 printf_filtered (")");
2605 print_bit_vector (TYPE_FIELD_VIRTUAL_BITS (type),
2606 TYPE_N_BASECLASSES (type));
2607 puts_filtered ("\n");
2609 if (TYPE_NFIELDS (type) > 0)
2611 if (TYPE_FIELD_PRIVATE_BITS (type) != NULL)
2613 printfi_filtered (spaces,
2614 "private_field_bits (%d bits at *",
2615 TYPE_NFIELDS (type));
2616 gdb_print_host_address (TYPE_FIELD_PRIVATE_BITS (type),
2618 printf_filtered (")");
2619 print_bit_vector (TYPE_FIELD_PRIVATE_BITS (type),
2620 TYPE_NFIELDS (type));
2621 puts_filtered ("\n");
2623 if (TYPE_FIELD_PROTECTED_BITS (type) != NULL)
2625 printfi_filtered (spaces,
2626 "protected_field_bits (%d bits at *",
2627 TYPE_NFIELDS (type));
2628 gdb_print_host_address (TYPE_FIELD_PROTECTED_BITS (type),
2630 printf_filtered (")");
2631 print_bit_vector (TYPE_FIELD_PROTECTED_BITS (type),
2632 TYPE_NFIELDS (type));
2633 puts_filtered ("\n");
2636 if (TYPE_NFN_FIELDS (type) > 0)
2638 dump_fn_fieldlists (type, spaces);
2642 /* Print the contents of the TYPE's type_specific union, assuming that
2643 its type-specific kind is TYPE_SPECIFIC_GNAT_STUFF. */
2646 print_gnat_stuff (struct type *type, int spaces)
2648 struct type *descriptive_type = TYPE_DESCRIPTIVE_TYPE (type);
2650 recursive_dump_type (descriptive_type, spaces + 2);
2653 static struct obstack dont_print_type_obstack;
2656 recursive_dump_type (struct type *type, int spaces)
2661 obstack_begin (&dont_print_type_obstack, 0);
2663 if (TYPE_NFIELDS (type) > 0
2664 || (HAVE_CPLUS_STRUCT (type) && TYPE_NFN_FIELDS (type) > 0))
2666 struct type **first_dont_print
2667 = (struct type **) obstack_base (&dont_print_type_obstack);
2669 int i = (struct type **)
2670 obstack_next_free (&dont_print_type_obstack) - first_dont_print;
2674 if (type == first_dont_print[i])
2676 printfi_filtered (spaces, "type node ");
2677 gdb_print_host_address (type, gdb_stdout);
2678 printf_filtered (_(" <same as already seen type>\n"));
2683 obstack_ptr_grow (&dont_print_type_obstack, type);
2686 printfi_filtered (spaces, "type node ");
2687 gdb_print_host_address (type, gdb_stdout);
2688 printf_filtered ("\n");
2689 printfi_filtered (spaces, "name '%s' (",
2690 TYPE_NAME (type) ? TYPE_NAME (type) : "<NULL>");
2691 gdb_print_host_address (TYPE_NAME (type), gdb_stdout);
2692 printf_filtered (")\n");
2693 printfi_filtered (spaces, "tagname '%s' (",
2694 TYPE_TAG_NAME (type) ? TYPE_TAG_NAME (type) : "<NULL>");
2695 gdb_print_host_address (TYPE_TAG_NAME (type), gdb_stdout);
2696 printf_filtered (")\n");
2697 printfi_filtered (spaces, "code 0x%x ", TYPE_CODE (type));
2698 switch (TYPE_CODE (type))
2700 case TYPE_CODE_UNDEF:
2701 printf_filtered ("(TYPE_CODE_UNDEF)");
2704 printf_filtered ("(TYPE_CODE_PTR)");
2706 case TYPE_CODE_ARRAY:
2707 printf_filtered ("(TYPE_CODE_ARRAY)");
2709 case TYPE_CODE_STRUCT:
2710 printf_filtered ("(TYPE_CODE_STRUCT)");
2712 case TYPE_CODE_UNION:
2713 printf_filtered ("(TYPE_CODE_UNION)");
2715 case TYPE_CODE_ENUM:
2716 printf_filtered ("(TYPE_CODE_ENUM)");
2718 case TYPE_CODE_FLAGS:
2719 printf_filtered ("(TYPE_CODE_FLAGS)");
2721 case TYPE_CODE_FUNC:
2722 printf_filtered ("(TYPE_CODE_FUNC)");
2725 printf_filtered ("(TYPE_CODE_INT)");
2728 printf_filtered ("(TYPE_CODE_FLT)");
2730 case TYPE_CODE_VOID:
2731 printf_filtered ("(TYPE_CODE_VOID)");
2734 printf_filtered ("(TYPE_CODE_SET)");
2736 case TYPE_CODE_RANGE:
2737 printf_filtered ("(TYPE_CODE_RANGE)");
2739 case TYPE_CODE_STRING:
2740 printf_filtered ("(TYPE_CODE_STRING)");
2742 case TYPE_CODE_BITSTRING:
2743 printf_filtered ("(TYPE_CODE_BITSTRING)");
2745 case TYPE_CODE_ERROR:
2746 printf_filtered ("(TYPE_CODE_ERROR)");
2748 case TYPE_CODE_MEMBERPTR:
2749 printf_filtered ("(TYPE_CODE_MEMBERPTR)");
2751 case TYPE_CODE_METHODPTR:
2752 printf_filtered ("(TYPE_CODE_METHODPTR)");
2754 case TYPE_CODE_METHOD:
2755 printf_filtered ("(TYPE_CODE_METHOD)");
2758 printf_filtered ("(TYPE_CODE_REF)");
2760 case TYPE_CODE_CHAR:
2761 printf_filtered ("(TYPE_CODE_CHAR)");
2763 case TYPE_CODE_BOOL:
2764 printf_filtered ("(TYPE_CODE_BOOL)");
2766 case TYPE_CODE_COMPLEX:
2767 printf_filtered ("(TYPE_CODE_COMPLEX)");
2769 case TYPE_CODE_TYPEDEF:
2770 printf_filtered ("(TYPE_CODE_TYPEDEF)");
2772 case TYPE_CODE_NAMESPACE:
2773 printf_filtered ("(TYPE_CODE_NAMESPACE)");
2776 printf_filtered ("(UNKNOWN TYPE CODE)");
2779 puts_filtered ("\n");
2780 printfi_filtered (spaces, "length %d\n", TYPE_LENGTH (type));
2781 if (TYPE_OBJFILE_OWNED (type))
2783 printfi_filtered (spaces, "objfile ");
2784 gdb_print_host_address (TYPE_OWNER (type).objfile, gdb_stdout);
2788 printfi_filtered (spaces, "gdbarch ");
2789 gdb_print_host_address (TYPE_OWNER (type).gdbarch, gdb_stdout);
2791 printf_filtered ("\n");
2792 printfi_filtered (spaces, "target_type ");
2793 gdb_print_host_address (TYPE_TARGET_TYPE (type), gdb_stdout);
2794 printf_filtered ("\n");
2795 if (TYPE_TARGET_TYPE (type) != NULL)
2797 recursive_dump_type (TYPE_TARGET_TYPE (type), spaces + 2);
2799 printfi_filtered (spaces, "pointer_type ");
2800 gdb_print_host_address (TYPE_POINTER_TYPE (type), gdb_stdout);
2801 printf_filtered ("\n");
2802 printfi_filtered (spaces, "reference_type ");
2803 gdb_print_host_address (TYPE_REFERENCE_TYPE (type), gdb_stdout);
2804 printf_filtered ("\n");
2805 printfi_filtered (spaces, "type_chain ");
2806 gdb_print_host_address (TYPE_CHAIN (type), gdb_stdout);
2807 printf_filtered ("\n");
2808 printfi_filtered (spaces, "instance_flags 0x%x",
2809 TYPE_INSTANCE_FLAGS (type));
2810 if (TYPE_CONST (type))
2812 puts_filtered (" TYPE_FLAG_CONST");
2814 if (TYPE_VOLATILE (type))
2816 puts_filtered (" TYPE_FLAG_VOLATILE");
2818 if (TYPE_CODE_SPACE (type))
2820 puts_filtered (" TYPE_FLAG_CODE_SPACE");
2822 if (TYPE_DATA_SPACE (type))
2824 puts_filtered (" TYPE_FLAG_DATA_SPACE");
2826 if (TYPE_ADDRESS_CLASS_1 (type))
2828 puts_filtered (" TYPE_FLAG_ADDRESS_CLASS_1");
2830 if (TYPE_ADDRESS_CLASS_2 (type))
2832 puts_filtered (" TYPE_FLAG_ADDRESS_CLASS_2");
2834 puts_filtered ("\n");
2836 printfi_filtered (spaces, "flags");
2837 if (TYPE_UNSIGNED (type))
2839 puts_filtered (" TYPE_FLAG_UNSIGNED");
2841 if (TYPE_NOSIGN (type))
2843 puts_filtered (" TYPE_FLAG_NOSIGN");
2845 if (TYPE_STUB (type))
2847 puts_filtered (" TYPE_FLAG_STUB");
2849 if (TYPE_TARGET_STUB (type))
2851 puts_filtered (" TYPE_FLAG_TARGET_STUB");
2853 if (TYPE_STATIC (type))
2855 puts_filtered (" TYPE_FLAG_STATIC");
2857 if (TYPE_PROTOTYPED (type))
2859 puts_filtered (" TYPE_FLAG_PROTOTYPED");
2861 if (TYPE_INCOMPLETE (type))
2863 puts_filtered (" TYPE_FLAG_INCOMPLETE");
2865 if (TYPE_VARARGS (type))
2867 puts_filtered (" TYPE_FLAG_VARARGS");
2869 /* This is used for things like AltiVec registers on ppc. Gcc emits
2870 an attribute for the array type, which tells whether or not we
2871 have a vector, instead of a regular array. */
2872 if (TYPE_VECTOR (type))
2874 puts_filtered (" TYPE_FLAG_VECTOR");
2876 if (TYPE_FIXED_INSTANCE (type))
2878 puts_filtered (" TYPE_FIXED_INSTANCE");
2880 if (TYPE_STUB_SUPPORTED (type))
2882 puts_filtered (" TYPE_STUB_SUPPORTED");
2884 if (TYPE_NOTTEXT (type))
2886 puts_filtered (" TYPE_NOTTEXT");
2888 puts_filtered ("\n");
2889 printfi_filtered (spaces, "nfields %d ", TYPE_NFIELDS (type));
2890 gdb_print_host_address (TYPE_FIELDS (type), gdb_stdout);
2891 puts_filtered ("\n");
2892 for (idx = 0; idx < TYPE_NFIELDS (type); idx++)
2894 printfi_filtered (spaces + 2,
2895 "[%d] bitpos %d bitsize %d type ",
2896 idx, TYPE_FIELD_BITPOS (type, idx),
2897 TYPE_FIELD_BITSIZE (type, idx));
2898 gdb_print_host_address (TYPE_FIELD_TYPE (type, idx), gdb_stdout);
2899 printf_filtered (" name '%s' (",
2900 TYPE_FIELD_NAME (type, idx) != NULL
2901 ? TYPE_FIELD_NAME (type, idx)
2903 gdb_print_host_address (TYPE_FIELD_NAME (type, idx), gdb_stdout);
2904 printf_filtered (")\n");
2905 if (TYPE_FIELD_TYPE (type, idx) != NULL)
2907 recursive_dump_type (TYPE_FIELD_TYPE (type, idx), spaces + 4);
2910 if (TYPE_CODE (type) == TYPE_CODE_RANGE)
2912 printfi_filtered (spaces, "low %s%s high %s%s\n",
2913 plongest (TYPE_LOW_BOUND (type)),
2914 TYPE_LOW_BOUND_UNDEFINED (type) ? " (undefined)" : "",
2915 plongest (TYPE_HIGH_BOUND (type)),
2916 TYPE_HIGH_BOUND_UNDEFINED (type) ? " (undefined)" : "");
2918 printfi_filtered (spaces, "vptr_basetype ");
2919 gdb_print_host_address (TYPE_VPTR_BASETYPE (type), gdb_stdout);
2920 puts_filtered ("\n");
2921 if (TYPE_VPTR_BASETYPE (type) != NULL)
2923 recursive_dump_type (TYPE_VPTR_BASETYPE (type), spaces + 2);
2925 printfi_filtered (spaces, "vptr_fieldno %d\n",
2926 TYPE_VPTR_FIELDNO (type));
2928 switch (TYPE_SPECIFIC_FIELD (type))
2930 case TYPE_SPECIFIC_CPLUS_STUFF:
2931 printfi_filtered (spaces, "cplus_stuff ");
2932 gdb_print_host_address (TYPE_CPLUS_SPECIFIC (type),
2934 puts_filtered ("\n");
2935 print_cplus_stuff (type, spaces);
2938 case TYPE_SPECIFIC_GNAT_STUFF:
2939 printfi_filtered (spaces, "gnat_stuff ");
2940 gdb_print_host_address (TYPE_GNAT_SPECIFIC (type), gdb_stdout);
2941 puts_filtered ("\n");
2942 print_gnat_stuff (type, spaces);
2945 case TYPE_SPECIFIC_FLOATFORMAT:
2946 printfi_filtered (spaces, "floatformat ");
2947 if (TYPE_FLOATFORMAT (type) == NULL)
2948 puts_filtered ("(null)");
2951 puts_filtered ("{ ");
2952 if (TYPE_FLOATFORMAT (type)[0] == NULL
2953 || TYPE_FLOATFORMAT (type)[0]->name == NULL)
2954 puts_filtered ("(null)");
2956 puts_filtered (TYPE_FLOATFORMAT (type)[0]->name);
2958 puts_filtered (", ");
2959 if (TYPE_FLOATFORMAT (type)[1] == NULL
2960 || TYPE_FLOATFORMAT (type)[1]->name == NULL)
2961 puts_filtered ("(null)");
2963 puts_filtered (TYPE_FLOATFORMAT (type)[1]->name);
2965 puts_filtered (" }");
2967 puts_filtered ("\n");
2970 case TYPE_SPECIFIC_CALLING_CONVENTION:
2971 printfi_filtered (spaces, "calling_convention %d\n",
2972 TYPE_CALLING_CONVENTION (type));
2977 obstack_free (&dont_print_type_obstack, NULL);
2980 /* Trivial helpers for the libiberty hash table, for mapping one
2985 struct type *old, *new;
2989 type_pair_hash (const void *item)
2991 const struct type_pair *pair = item;
2993 return htab_hash_pointer (pair->old);
2997 type_pair_eq (const void *item_lhs, const void *item_rhs)
2999 const struct type_pair *lhs = item_lhs, *rhs = item_rhs;
3001 return lhs->old == rhs->old;
3004 /* Allocate the hash table used by copy_type_recursive to walk
3005 types without duplicates. We use OBJFILE's obstack, because
3006 OBJFILE is about to be deleted. */
3009 create_copied_types_hash (struct objfile *objfile)
3011 return htab_create_alloc_ex (1, type_pair_hash, type_pair_eq,
3012 NULL, &objfile->objfile_obstack,
3013 hashtab_obstack_allocate,
3014 dummy_obstack_deallocate);
3017 /* Recursively copy (deep copy) TYPE, if it is associated with
3018 OBJFILE. Return a new type allocated using malloc, a saved type if
3019 we have already visited TYPE (using COPIED_TYPES), or TYPE if it is
3020 not associated with OBJFILE. */
3023 copy_type_recursive (struct objfile *objfile,
3025 htab_t copied_types)
3027 struct type_pair *stored, pair;
3029 struct type *new_type;
3031 if (! TYPE_OBJFILE_OWNED (type))
3034 /* This type shouldn't be pointing to any types in other objfiles;
3035 if it did, the type might disappear unexpectedly. */
3036 gdb_assert (TYPE_OBJFILE (type) == objfile);
3039 slot = htab_find_slot (copied_types, &pair, INSERT);
3041 return ((struct type_pair *) *slot)->new;
3043 new_type = alloc_type_arch (get_type_arch (type));
3045 /* We must add the new type to the hash table immediately, in case
3046 we encounter this type again during a recursive call below. */
3047 stored = obstack_alloc (&objfile->objfile_obstack, sizeof (struct type_pair));
3049 stored->new = new_type;
3052 /* Copy the common fields of types. For the main type, we simply
3053 copy the entire thing and then update specific fields as needed. */
3054 *TYPE_MAIN_TYPE (new_type) = *TYPE_MAIN_TYPE (type);
3055 TYPE_OBJFILE_OWNED (new_type) = 0;
3056 TYPE_OWNER (new_type).gdbarch = get_type_arch (type);
3058 if (TYPE_NAME (type))
3059 TYPE_NAME (new_type) = xstrdup (TYPE_NAME (type));
3060 if (TYPE_TAG_NAME (type))
3061 TYPE_TAG_NAME (new_type) = xstrdup (TYPE_TAG_NAME (type));
3063 TYPE_INSTANCE_FLAGS (new_type) = TYPE_INSTANCE_FLAGS (type);
3064 TYPE_LENGTH (new_type) = TYPE_LENGTH (type);
3066 /* Copy the fields. */
3067 if (TYPE_NFIELDS (type))
3071 nfields = TYPE_NFIELDS (type);
3072 TYPE_FIELDS (new_type) = XCALLOC (nfields, struct field);
3073 for (i = 0; i < nfields; i++)
3075 TYPE_FIELD_ARTIFICIAL (new_type, i) =
3076 TYPE_FIELD_ARTIFICIAL (type, i);
3077 TYPE_FIELD_BITSIZE (new_type, i) = TYPE_FIELD_BITSIZE (type, i);
3078 if (TYPE_FIELD_TYPE (type, i))
3079 TYPE_FIELD_TYPE (new_type, i)
3080 = copy_type_recursive (objfile, TYPE_FIELD_TYPE (type, i),
3082 if (TYPE_FIELD_NAME (type, i))
3083 TYPE_FIELD_NAME (new_type, i) =
3084 xstrdup (TYPE_FIELD_NAME (type, i));
3085 switch (TYPE_FIELD_LOC_KIND (type, i))
3087 case FIELD_LOC_KIND_BITPOS:
3088 SET_FIELD_BITPOS (TYPE_FIELD (new_type, i),
3089 TYPE_FIELD_BITPOS (type, i));
3091 case FIELD_LOC_KIND_PHYSADDR:
3092 SET_FIELD_PHYSADDR (TYPE_FIELD (new_type, i),
3093 TYPE_FIELD_STATIC_PHYSADDR (type, i));
3095 case FIELD_LOC_KIND_PHYSNAME:
3096 SET_FIELD_PHYSNAME (TYPE_FIELD (new_type, i),
3097 xstrdup (TYPE_FIELD_STATIC_PHYSNAME (type,
3101 internal_error (__FILE__, __LINE__,
3102 _("Unexpected type field location kind: %d"),
3103 TYPE_FIELD_LOC_KIND (type, i));
3108 /* For range types, copy the bounds information. */
3109 if (TYPE_CODE (type) == TYPE_CODE_RANGE)
3111 TYPE_RANGE_DATA (new_type) = xmalloc (sizeof (struct range_bounds));
3112 *TYPE_RANGE_DATA (new_type) = *TYPE_RANGE_DATA (type);
3115 /* Copy pointers to other types. */
3116 if (TYPE_TARGET_TYPE (type))
3117 TYPE_TARGET_TYPE (new_type) =
3118 copy_type_recursive (objfile,
3119 TYPE_TARGET_TYPE (type),
3121 if (TYPE_VPTR_BASETYPE (type))
3122 TYPE_VPTR_BASETYPE (new_type) =
3123 copy_type_recursive (objfile,
3124 TYPE_VPTR_BASETYPE (type),
3126 /* Maybe copy the type_specific bits.
3128 NOTE drow/2005-12-09: We do not copy the C++-specific bits like
3129 base classes and methods. There's no fundamental reason why we
3130 can't, but at the moment it is not needed. */
3132 if (TYPE_CODE (type) == TYPE_CODE_FLT)
3133 TYPE_FLOATFORMAT (new_type) = TYPE_FLOATFORMAT (type);
3134 else if (TYPE_CODE (type) == TYPE_CODE_STRUCT
3135 || TYPE_CODE (type) == TYPE_CODE_UNION
3136 || TYPE_CODE (type) == TYPE_CODE_NAMESPACE)
3137 INIT_CPLUS_SPECIFIC (new_type);
3142 /* Make a copy of the given TYPE, except that the pointer & reference
3143 types are not preserved.
3145 This function assumes that the given type has an associated objfile.
3146 This objfile is used to allocate the new type. */
3149 copy_type (const struct type *type)
3151 struct type *new_type;
3153 gdb_assert (TYPE_OBJFILE_OWNED (type));
3155 new_type = alloc_type_copy (type);
3156 TYPE_INSTANCE_FLAGS (new_type) = TYPE_INSTANCE_FLAGS (type);
3157 TYPE_LENGTH (new_type) = TYPE_LENGTH (type);
3158 memcpy (TYPE_MAIN_TYPE (new_type), TYPE_MAIN_TYPE (type),
3159 sizeof (struct main_type));
3165 /* Helper functions to initialize architecture-specific types. */
3167 /* Allocate a type structure associated with GDBARCH and set its
3168 CODE, LENGTH, and NAME fields. */
3170 arch_type (struct gdbarch *gdbarch,
3171 enum type_code code, int length, char *name)
3175 type = alloc_type_arch (gdbarch);
3176 TYPE_CODE (type) = code;
3177 TYPE_LENGTH (type) = length;
3180 TYPE_NAME (type) = xstrdup (name);
3185 /* Allocate a TYPE_CODE_INT type structure associated with GDBARCH.
3186 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
3187 the type's TYPE_UNSIGNED flag. NAME is the type name. */
3189 arch_integer_type (struct gdbarch *gdbarch,
3190 int bit, int unsigned_p, char *name)
3194 t = arch_type (gdbarch, TYPE_CODE_INT, bit / TARGET_CHAR_BIT, name);
3196 TYPE_UNSIGNED (t) = 1;
3197 if (name && strcmp (name, "char") == 0)
3198 TYPE_NOSIGN (t) = 1;
3203 /* Allocate a TYPE_CODE_CHAR type structure associated with GDBARCH.
3204 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
3205 the type's TYPE_UNSIGNED flag. NAME is the type name. */
3207 arch_character_type (struct gdbarch *gdbarch,
3208 int bit, int unsigned_p, char *name)
3212 t = arch_type (gdbarch, TYPE_CODE_CHAR, bit / TARGET_CHAR_BIT, name);
3214 TYPE_UNSIGNED (t) = 1;
3219 /* Allocate a TYPE_CODE_BOOL type structure associated with GDBARCH.
3220 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
3221 the type's TYPE_UNSIGNED flag. NAME is the type name. */
3223 arch_boolean_type (struct gdbarch *gdbarch,
3224 int bit, int unsigned_p, char *name)
3228 t = arch_type (gdbarch, TYPE_CODE_BOOL, bit / TARGET_CHAR_BIT, name);
3230 TYPE_UNSIGNED (t) = 1;
3235 /* Allocate a TYPE_CODE_FLT type structure associated with GDBARCH.
3236 BIT is the type size in bits; if BIT equals -1, the size is
3237 determined by the floatformat. NAME is the type name. Set the
3238 TYPE_FLOATFORMAT from FLOATFORMATS. */
3240 arch_float_type (struct gdbarch *gdbarch,
3241 int bit, char *name, const struct floatformat **floatformats)
3247 gdb_assert (floatformats != NULL);
3248 gdb_assert (floatformats[0] != NULL && floatformats[1] != NULL);
3249 bit = floatformats[0]->totalsize;
3251 gdb_assert (bit >= 0);
3253 t = arch_type (gdbarch, TYPE_CODE_FLT, bit / TARGET_CHAR_BIT, name);
3254 TYPE_FLOATFORMAT (t) = floatformats;
3258 /* Allocate a TYPE_CODE_COMPLEX type structure associated with GDBARCH.
3259 NAME is the type name. TARGET_TYPE is the component float type. */
3261 arch_complex_type (struct gdbarch *gdbarch,
3262 char *name, struct type *target_type)
3266 t = arch_type (gdbarch, TYPE_CODE_COMPLEX,
3267 2 * TYPE_LENGTH (target_type), name);
3268 TYPE_TARGET_TYPE (t) = target_type;
3272 /* Allocate a TYPE_CODE_FLAGS type structure associated with GDBARCH.
3273 NAME is the type name. LENGTH is the size of the flag word in bytes. */
3275 arch_flags_type (struct gdbarch *gdbarch, char *name, int length)
3277 int nfields = length * TARGET_CHAR_BIT;
3280 type = arch_type (gdbarch, TYPE_CODE_FLAGS, length, name);
3281 TYPE_UNSIGNED (type) = 1;
3282 TYPE_NFIELDS (type) = nfields;
3283 TYPE_FIELDS (type) = TYPE_ZALLOC (type, nfields * sizeof (struct field));
3288 /* Add field to TYPE_CODE_FLAGS type TYPE to indicate the bit at
3289 position BITPOS is called NAME. */
3291 append_flags_type_flag (struct type *type, int bitpos, char *name)
3293 gdb_assert (TYPE_CODE (type) == TYPE_CODE_FLAGS);
3294 gdb_assert (bitpos < TYPE_NFIELDS (type));
3295 gdb_assert (bitpos >= 0);
3299 TYPE_FIELD_NAME (type, bitpos) = xstrdup (name);
3300 TYPE_FIELD_BITPOS (type, bitpos) = bitpos;
3304 /* Don't show this field to the user. */
3305 TYPE_FIELD_BITPOS (type, bitpos) = -1;
3309 /* Allocate a TYPE_CODE_STRUCT or TYPE_CODE_UNION type structure (as
3310 specified by CODE) associated with GDBARCH. NAME is the type name. */
3312 arch_composite_type (struct gdbarch *gdbarch, char *name, enum type_code code)
3316 gdb_assert (code == TYPE_CODE_STRUCT || code == TYPE_CODE_UNION);
3317 t = arch_type (gdbarch, code, 0, NULL);
3318 TYPE_TAG_NAME (t) = name;
3319 INIT_CPLUS_SPECIFIC (t);
3323 /* Add new field with name NAME and type FIELD to composite type T.
3324 Do not set the field's position or adjust the type's length;
3325 the caller should do so. Return the new field. */
3327 append_composite_type_field_raw (struct type *t, char *name,
3332 TYPE_NFIELDS (t) = TYPE_NFIELDS (t) + 1;
3333 TYPE_FIELDS (t) = xrealloc (TYPE_FIELDS (t),
3334 sizeof (struct field) * TYPE_NFIELDS (t));
3335 f = &(TYPE_FIELDS (t)[TYPE_NFIELDS (t) - 1]);
3336 memset (f, 0, sizeof f[0]);
3337 FIELD_TYPE (f[0]) = field;
3338 FIELD_NAME (f[0]) = name;
3342 /* Add new field with name NAME and type FIELD to composite type T.
3343 ALIGNMENT (if non-zero) specifies the minimum field alignment. */
3345 append_composite_type_field_aligned (struct type *t, char *name,
3346 struct type *field, int alignment)
3348 struct field *f = append_composite_type_field_raw (t, name, field);
3350 if (TYPE_CODE (t) == TYPE_CODE_UNION)
3352 if (TYPE_LENGTH (t) < TYPE_LENGTH (field))
3353 TYPE_LENGTH (t) = TYPE_LENGTH (field);
3355 else if (TYPE_CODE (t) == TYPE_CODE_STRUCT)
3357 TYPE_LENGTH (t) = TYPE_LENGTH (t) + TYPE_LENGTH (field);
3358 if (TYPE_NFIELDS (t) > 1)
3360 FIELD_BITPOS (f[0]) = (FIELD_BITPOS (f[-1])
3361 + (TYPE_LENGTH (FIELD_TYPE (f[-1]))
3362 * TARGET_CHAR_BIT));
3366 int left = FIELD_BITPOS (f[0]) % (alignment * TARGET_CHAR_BIT);
3370 FIELD_BITPOS (f[0]) += left;
3371 TYPE_LENGTH (t) += left / TARGET_CHAR_BIT;
3378 /* Add new field with name NAME and type FIELD to composite type T. */
3380 append_composite_type_field (struct type *t, char *name,
3383 append_composite_type_field_aligned (t, name, field, 0);
3387 static struct gdbarch_data *gdbtypes_data;
3389 const struct builtin_type *
3390 builtin_type (struct gdbarch *gdbarch)
3392 return gdbarch_data (gdbarch, gdbtypes_data);
3396 gdbtypes_post_init (struct gdbarch *gdbarch)
3398 struct builtin_type *builtin_type
3399 = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct builtin_type);
3402 builtin_type->builtin_void
3403 = arch_type (gdbarch, TYPE_CODE_VOID, 1, "void");
3404 builtin_type->builtin_char
3405 = arch_integer_type (gdbarch, TARGET_CHAR_BIT,
3406 !gdbarch_char_signed (gdbarch), "char");
3407 builtin_type->builtin_signed_char
3408 = arch_integer_type (gdbarch, TARGET_CHAR_BIT,
3410 builtin_type->builtin_unsigned_char
3411 = arch_integer_type (gdbarch, TARGET_CHAR_BIT,
3412 1, "unsigned char");
3413 builtin_type->builtin_short
3414 = arch_integer_type (gdbarch, gdbarch_short_bit (gdbarch),
3416 builtin_type->builtin_unsigned_short
3417 = arch_integer_type (gdbarch, gdbarch_short_bit (gdbarch),
3418 1, "unsigned short");
3419 builtin_type->builtin_int
3420 = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch),
3422 builtin_type->builtin_unsigned_int
3423 = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch),
3425 builtin_type->builtin_long
3426 = arch_integer_type (gdbarch, gdbarch_long_bit (gdbarch),
3428 builtin_type->builtin_unsigned_long
3429 = arch_integer_type (gdbarch, gdbarch_long_bit (gdbarch),
3430 1, "unsigned long");
3431 builtin_type->builtin_long_long
3432 = arch_integer_type (gdbarch, gdbarch_long_long_bit (gdbarch),
3434 builtin_type->builtin_unsigned_long_long
3435 = arch_integer_type (gdbarch, gdbarch_long_long_bit (gdbarch),
3436 1, "unsigned long long");
3437 builtin_type->builtin_float
3438 = arch_float_type (gdbarch, gdbarch_float_bit (gdbarch),
3439 "float", gdbarch_float_format (gdbarch));
3440 builtin_type->builtin_double
3441 = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch),
3442 "double", gdbarch_double_format (gdbarch));
3443 builtin_type->builtin_long_double
3444 = arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch),
3445 "long double", gdbarch_long_double_format (gdbarch));
3446 builtin_type->builtin_complex
3447 = arch_complex_type (gdbarch, "complex",
3448 builtin_type->builtin_float);
3449 builtin_type->builtin_double_complex
3450 = arch_complex_type (gdbarch, "double complex",
3451 builtin_type->builtin_double);
3452 builtin_type->builtin_string
3453 = arch_type (gdbarch, TYPE_CODE_STRING, 1, "string");
3454 builtin_type->builtin_bool
3455 = arch_type (gdbarch, TYPE_CODE_BOOL, 1, "bool");
3457 /* The following three are about decimal floating point types, which
3458 are 32-bits, 64-bits and 128-bits respectively. */
3459 builtin_type->builtin_decfloat
3460 = arch_type (gdbarch, TYPE_CODE_DECFLOAT, 32 / 8, "_Decimal32");
3461 builtin_type->builtin_decdouble
3462 = arch_type (gdbarch, TYPE_CODE_DECFLOAT, 64 / 8, "_Decimal64");
3463 builtin_type->builtin_declong
3464 = arch_type (gdbarch, TYPE_CODE_DECFLOAT, 128 / 8, "_Decimal128");
3466 /* "True" character types. */
3467 builtin_type->builtin_true_char
3468 = arch_character_type (gdbarch, TARGET_CHAR_BIT, 0, "true character");
3469 builtin_type->builtin_true_unsigned_char
3470 = arch_character_type (gdbarch, TARGET_CHAR_BIT, 1, "true character");
3472 /* Fixed-size integer types. */
3473 builtin_type->builtin_int0
3474 = arch_integer_type (gdbarch, 0, 0, "int0_t");
3475 builtin_type->builtin_int8
3476 = arch_integer_type (gdbarch, 8, 0, "int8_t");
3477 builtin_type->builtin_uint8
3478 = arch_integer_type (gdbarch, 8, 1, "uint8_t");
3479 builtin_type->builtin_int16
3480 = arch_integer_type (gdbarch, 16, 0, "int16_t");
3481 builtin_type->builtin_uint16
3482 = arch_integer_type (gdbarch, 16, 1, "uint16_t");
3483 builtin_type->builtin_int32
3484 = arch_integer_type (gdbarch, 32, 0, "int32_t");
3485 builtin_type->builtin_uint32
3486 = arch_integer_type (gdbarch, 32, 1, "uint32_t");
3487 builtin_type->builtin_int64
3488 = arch_integer_type (gdbarch, 64, 0, "int64_t");
3489 builtin_type->builtin_uint64
3490 = arch_integer_type (gdbarch, 64, 1, "uint64_t");
3491 builtin_type->builtin_int128
3492 = arch_integer_type (gdbarch, 128, 0, "int128_t");
3493 builtin_type->builtin_uint128
3494 = arch_integer_type (gdbarch, 128, 1, "uint128_t");
3495 TYPE_NOTTEXT (builtin_type->builtin_int8) = 1;
3496 TYPE_NOTTEXT (builtin_type->builtin_uint8) = 1;
3498 /* Wide character types. */
3499 builtin_type->builtin_char16
3500 = arch_integer_type (gdbarch, 16, 0, "char16_t");
3501 builtin_type->builtin_char32
3502 = arch_integer_type (gdbarch, 32, 0, "char32_t");
3505 /* Default data/code pointer types. */
3506 builtin_type->builtin_data_ptr
3507 = lookup_pointer_type (builtin_type->builtin_void);
3508 builtin_type->builtin_func_ptr
3509 = lookup_pointer_type (lookup_function_type (builtin_type->builtin_void));
3511 /* This type represents a GDB internal function. */
3512 builtin_type->internal_fn
3513 = arch_type (gdbarch, TYPE_CODE_INTERNAL_FUNCTION, 0,
3514 "<internal function>");
3516 return builtin_type;
3520 /* This set of objfile-based types is intended to be used by symbol
3521 readers as basic types. */
3523 static const struct objfile_data *objfile_type_data;
3525 const struct objfile_type *
3526 objfile_type (struct objfile *objfile)
3528 struct gdbarch *gdbarch;
3529 struct objfile_type *objfile_type
3530 = objfile_data (objfile, objfile_type_data);
3533 return objfile_type;
3535 objfile_type = OBSTACK_CALLOC (&objfile->objfile_obstack,
3536 1, struct objfile_type);
3538 /* Use the objfile architecture to determine basic type properties. */
3539 gdbarch = get_objfile_arch (objfile);
3542 objfile_type->builtin_void
3543 = init_type (TYPE_CODE_VOID, 1,
3547 objfile_type->builtin_char
3548 = init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
3550 | (gdbarch_char_signed (gdbarch) ? 0 : TYPE_FLAG_UNSIGNED)),
3552 objfile_type->builtin_signed_char
3553 = init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
3555 "signed char", objfile);
3556 objfile_type->builtin_unsigned_char
3557 = init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
3559 "unsigned char", objfile);
3560 objfile_type->builtin_short
3561 = init_type (TYPE_CODE_INT,
3562 gdbarch_short_bit (gdbarch) / TARGET_CHAR_BIT,
3563 0, "short", objfile);
3564 objfile_type->builtin_unsigned_short
3565 = init_type (TYPE_CODE_INT,
3566 gdbarch_short_bit (gdbarch) / TARGET_CHAR_BIT,
3567 TYPE_FLAG_UNSIGNED, "unsigned short", objfile);
3568 objfile_type->builtin_int
3569 = init_type (TYPE_CODE_INT,
3570 gdbarch_int_bit (gdbarch) / TARGET_CHAR_BIT,
3572 objfile_type->builtin_unsigned_int
3573 = init_type (TYPE_CODE_INT,
3574 gdbarch_int_bit (gdbarch) / TARGET_CHAR_BIT,
3575 TYPE_FLAG_UNSIGNED, "unsigned int", objfile);
3576 objfile_type->builtin_long
3577 = init_type (TYPE_CODE_INT,
3578 gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT,
3579 0, "long", objfile);
3580 objfile_type->builtin_unsigned_long
3581 = init_type (TYPE_CODE_INT,
3582 gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT,
3583 TYPE_FLAG_UNSIGNED, "unsigned long", objfile);
3584 objfile_type->builtin_long_long
3585 = init_type (TYPE_CODE_INT,
3586 gdbarch_long_long_bit (gdbarch) / TARGET_CHAR_BIT,
3587 0, "long long", objfile);
3588 objfile_type->builtin_unsigned_long_long
3589 = init_type (TYPE_CODE_INT,
3590 gdbarch_long_long_bit (gdbarch) / TARGET_CHAR_BIT,
3591 TYPE_FLAG_UNSIGNED, "unsigned long long", objfile);
3593 objfile_type->builtin_float
3594 = init_type (TYPE_CODE_FLT,
3595 gdbarch_float_bit (gdbarch) / TARGET_CHAR_BIT,
3596 0, "float", objfile);
3597 TYPE_FLOATFORMAT (objfile_type->builtin_float)
3598 = gdbarch_float_format (gdbarch);
3599 objfile_type->builtin_double
3600 = init_type (TYPE_CODE_FLT,
3601 gdbarch_double_bit (gdbarch) / TARGET_CHAR_BIT,
3602 0, "double", objfile);
3603 TYPE_FLOATFORMAT (objfile_type->builtin_double)
3604 = gdbarch_double_format (gdbarch);
3605 objfile_type->builtin_long_double
3606 = init_type (TYPE_CODE_FLT,
3607 gdbarch_long_double_bit (gdbarch) / TARGET_CHAR_BIT,
3608 0, "long double", objfile);
3609 TYPE_FLOATFORMAT (objfile_type->builtin_long_double)
3610 = gdbarch_long_double_format (gdbarch);
3612 /* This type represents a type that was unrecognized in symbol read-in. */
3613 objfile_type->builtin_error
3614 = init_type (TYPE_CODE_ERROR, 0, 0, "<unknown type>", objfile);
3616 /* The following set of types is used for symbols with no
3617 debug information. */
3618 objfile_type->nodebug_text_symbol
3619 = init_type (TYPE_CODE_FUNC, 1, 0,
3620 "<text variable, no debug info>", objfile);
3621 TYPE_TARGET_TYPE (objfile_type->nodebug_text_symbol)
3622 = objfile_type->builtin_int;
3623 objfile_type->nodebug_data_symbol
3624 = init_type (TYPE_CODE_INT,
3625 gdbarch_int_bit (gdbarch) / HOST_CHAR_BIT, 0,
3626 "<data variable, no debug info>", objfile);
3627 objfile_type->nodebug_unknown_symbol
3628 = init_type (TYPE_CODE_INT, 1, 0,
3629 "<variable (not text or data), no debug info>", objfile);
3630 objfile_type->nodebug_tls_symbol
3631 = init_type (TYPE_CODE_INT,
3632 gdbarch_int_bit (gdbarch) / HOST_CHAR_BIT, 0,
3633 "<thread local variable, no debug info>", objfile);
3635 /* NOTE: on some targets, addresses and pointers are not necessarily
3636 the same --- for example, on the D10V, pointers are 16 bits long,
3637 but addresses are 32 bits long. See doc/gdbint.texinfo,
3638 ``Pointers Are Not Always Addresses''.
3641 - gdb's `struct type' always describes the target's
3643 - gdb's `struct value' objects should always hold values in
3645 - gdb's CORE_ADDR values are addresses in the unified virtual
3646 address space that the assembler and linker work with. Thus,
3647 since target_read_memory takes a CORE_ADDR as an argument, it
3648 can access any memory on the target, even if the processor has
3649 separate code and data address spaces.
3652 - If v is a value holding a D10V code pointer, its contents are
3653 in target form: a big-endian address left-shifted two bits.
3654 - If p is a D10V pointer type, TYPE_LENGTH (p) == 2, just as
3655 sizeof (void *) == 2 on the target.
3657 In this context, objfile_type->builtin_core_addr is a bit odd:
3658 it's a target type for a value the target will never see. It's
3659 only used to hold the values of (typeless) linker symbols, which
3660 are indeed in the unified virtual address space. */
3662 objfile_type->builtin_core_addr
3663 = init_type (TYPE_CODE_INT,
3664 gdbarch_addr_bit (gdbarch) / 8,
3665 TYPE_FLAG_UNSIGNED, "__CORE_ADDR", objfile);
3667 set_objfile_data (objfile, objfile_type_data, objfile_type);
3668 return objfile_type;
3672 extern void _initialize_gdbtypes (void);
3674 _initialize_gdbtypes (void)
3676 gdbtypes_data = gdbarch_data_register_post_init (gdbtypes_post_init);
3677 objfile_type_data = register_objfile_data ();
3679 add_setshow_zinteger_cmd ("overload", no_class, &overload_debug, _("\
3680 Set debugging of C++ overloading."), _("\
3681 Show debugging of C++ overloading."), _("\
3682 When enabled, ranking of the functions is displayed."),
3684 show_overload_debug,
3685 &setdebuglist, &showdebuglist);
3687 /* Add user knob for controlling resolution of opaque types. */
3688 add_setshow_boolean_cmd ("opaque-type-resolution", class_support,
3689 &opaque_type_resolution, _("\
3690 Set resolution of opaque struct/class/union types (if set before loading symbols)."), _("\
3691 Show resolution of opaque struct/class/union types (if set before loading symbols)."), NULL,
3693 show_opaque_type_resolution,
3694 &setlist, &showlist);