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)
446 /* Check for known address space delimiters. */
447 if (!strcmp (space_identifier, "code"))
448 return TYPE_INSTANCE_FLAG_CODE_SPACE;
449 else if (!strcmp (space_identifier, "data"))
450 return TYPE_INSTANCE_FLAG_DATA_SPACE;
451 else if (gdbarch_address_class_name_to_type_flags_p (gdbarch)
452 && gdbarch_address_class_name_to_type_flags (gdbarch,
457 error (_("Unknown address space specifier: \"%s\""), space_identifier);
460 /* Identify address space identifier by integer flag as defined in
461 gdbtypes.h -- return the string version of the adress space name. */
464 address_space_int_to_name (struct gdbarch *gdbarch, int space_flag)
466 if (space_flag & TYPE_INSTANCE_FLAG_CODE_SPACE)
468 else if (space_flag & TYPE_INSTANCE_FLAG_DATA_SPACE)
470 else if ((space_flag & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL)
471 && gdbarch_address_class_type_flags_to_name_p (gdbarch))
472 return gdbarch_address_class_type_flags_to_name (gdbarch, space_flag);
477 /* Create a new type with instance flags NEW_FLAGS, based on TYPE.
479 If STORAGE is non-NULL, create the new type instance there.
480 STORAGE must be in the same obstack as TYPE. */
483 make_qualified_type (struct type *type, int new_flags,
484 struct type *storage)
491 if (TYPE_INSTANCE_FLAGS (ntype) == new_flags)
493 ntype = TYPE_CHAIN (ntype);
495 while (ntype != type);
497 /* Create a new type instance. */
499 ntype = alloc_type_instance (type);
502 /* If STORAGE was provided, it had better be in the same objfile
503 as TYPE. Otherwise, we can't link it into TYPE's cv chain:
504 if one objfile is freed and the other kept, we'd have
505 dangling pointers. */
506 gdb_assert (TYPE_OBJFILE (type) == TYPE_OBJFILE (storage));
509 TYPE_MAIN_TYPE (ntype) = TYPE_MAIN_TYPE (type);
510 TYPE_CHAIN (ntype) = ntype;
513 /* Pointers or references to the original type are not relevant to
515 TYPE_POINTER_TYPE (ntype) = (struct type *) 0;
516 TYPE_REFERENCE_TYPE (ntype) = (struct type *) 0;
518 /* Chain the new qualified type to the old type. */
519 TYPE_CHAIN (ntype) = TYPE_CHAIN (type);
520 TYPE_CHAIN (type) = ntype;
522 /* Now set the instance flags and return the new type. */
523 TYPE_INSTANCE_FLAGS (ntype) = new_flags;
525 /* Set length of new type to that of the original type. */
526 TYPE_LENGTH (ntype) = TYPE_LENGTH (type);
531 /* Make an address-space-delimited variant of a type -- a type that
532 is identical to the one supplied except that it has an address
533 space attribute attached to it (such as "code" or "data").
535 The space attributes "code" and "data" are for Harvard
536 architectures. The address space attributes are for architectures
537 which have alternately sized pointers or pointers with alternate
541 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 */
570 struct type *tmp_type = type; /* tmp type */
571 struct objfile *objfile;
573 int new_flags = (TYPE_INSTANCE_FLAGS (type)
574 & ~(TYPE_INSTANCE_FLAG_CONST | TYPE_INSTANCE_FLAG_VOLATILE));
577 new_flags |= TYPE_INSTANCE_FLAG_CONST;
580 new_flags |= TYPE_INSTANCE_FLAG_VOLATILE;
582 if (typeptr && *typeptr != NULL)
584 /* TYPE and *TYPEPTR must be in the same objfile. We can't have
585 a C-V variant chain that threads across objfiles: if one
586 objfile gets freed, then the other has a broken C-V chain.
588 This code used to try to copy over the main type from TYPE to
589 *TYPEPTR if they were in different objfiles, but that's
590 wrong, too: TYPE may have a field list or member function
591 lists, which refer to types of their own, etc. etc. The
592 whole shebang would need to be copied over recursively; you
593 can't have inter-objfile pointers. The only thing to do is
594 to leave stub types as stub types, and look them up afresh by
595 name each time you encounter them. */
596 gdb_assert (TYPE_OBJFILE (*typeptr) == TYPE_OBJFILE (type));
599 ntype = make_qualified_type (type, new_flags,
600 typeptr ? *typeptr : NULL);
608 /* Replace the contents of ntype with the type *type. This changes the
609 contents, rather than the pointer for TYPE_MAIN_TYPE (ntype); thus
610 the changes are propogated to all types in the TYPE_CHAIN.
612 In order to build recursive types, it's inevitable that we'll need
613 to update types in place --- but this sort of indiscriminate
614 smashing is ugly, and needs to be replaced with something more
615 controlled. TYPE_MAIN_TYPE is a step in this direction; it's not
616 clear if more steps are needed. */
618 replace_type (struct type *ntype, struct type *type)
622 /* These two types had better be in the same objfile. Otherwise,
623 the assignment of one type's main type structure to the other
624 will produce a type with references to objects (names; field
625 lists; etc.) allocated on an objfile other than its own. */
626 gdb_assert (TYPE_OBJFILE (ntype) == TYPE_OBJFILE (ntype));
628 *TYPE_MAIN_TYPE (ntype) = *TYPE_MAIN_TYPE (type);
630 /* The type length is not a part of the main type. Update it for
631 each type on the variant chain. */
635 /* Assert that this element of the chain has no address-class bits
636 set in its flags. Such type variants might have type lengths
637 which are supposed to be different from the non-address-class
638 variants. This assertion shouldn't ever be triggered because
639 symbol readers which do construct address-class variants don't
640 call replace_type(). */
641 gdb_assert (TYPE_ADDRESS_CLASS_ALL (chain) == 0);
643 TYPE_LENGTH (chain) = TYPE_LENGTH (type);
644 chain = TYPE_CHAIN (chain);
646 while (ntype != chain);
648 /* Assert that the two types have equivalent instance qualifiers.
649 This should be true for at least all of our debug readers. */
650 gdb_assert (TYPE_INSTANCE_FLAGS (ntype) == TYPE_INSTANCE_FLAGS (type));
653 /* Implement direct support for MEMBER_TYPE in GNU C++.
654 May need to construct such a type if this is the first use.
655 The TYPE is the type of the member. The DOMAIN is the type
656 of the aggregate that the member belongs to. */
659 lookup_memberptr_type (struct type *type, struct type *domain)
663 mtype = alloc_type_copy (type);
664 smash_to_memberptr_type (mtype, domain, type);
668 /* Return a pointer-to-method type, for a method of type TO_TYPE. */
671 lookup_methodptr_type (struct type *to_type)
675 mtype = alloc_type_copy (to_type);
676 TYPE_TARGET_TYPE (mtype) = to_type;
677 TYPE_DOMAIN_TYPE (mtype) = TYPE_DOMAIN_TYPE (to_type);
678 TYPE_LENGTH (mtype) = cplus_method_ptr_size (to_type);
679 TYPE_CODE (mtype) = TYPE_CODE_METHODPTR;
683 /* Allocate a stub method whose return type is TYPE. This apparently
684 happens for speed of symbol reading, since parsing out the
685 arguments to the method is cpu-intensive, the way we are doing it.
686 So, we will fill in arguments later. This always returns a fresh
690 allocate_stub_method (struct type *type)
694 mtype = alloc_type_copy (type);
695 TYPE_CODE (mtype) = TYPE_CODE_METHOD;
696 TYPE_LENGTH (mtype) = 1;
697 TYPE_STUB (mtype) = 1;
698 TYPE_TARGET_TYPE (mtype) = type;
699 /* _DOMAIN_TYPE (mtype) = unknown yet */
703 /* Create a range type using either a blank type supplied in
704 RESULT_TYPE, or creating a new type, inheriting the objfile from
707 Indices will be of type INDEX_TYPE, and will range from LOW_BOUND
708 to HIGH_BOUND, inclusive.
710 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
711 sure it is TYPE_CODE_UNDEF before we bash it into a range type? */
714 create_range_type (struct type *result_type, struct type *index_type,
715 LONGEST low_bound, LONGEST high_bound)
717 if (result_type == NULL)
718 result_type = alloc_type_copy (index_type);
719 TYPE_CODE (result_type) = TYPE_CODE_RANGE;
720 TYPE_TARGET_TYPE (result_type) = index_type;
721 if (TYPE_STUB (index_type))
722 TYPE_TARGET_STUB (result_type) = 1;
724 TYPE_LENGTH (result_type) = TYPE_LENGTH (check_typedef (index_type));
725 TYPE_RANGE_DATA (result_type) = (struct range_bounds *)
726 TYPE_ZALLOC (result_type, sizeof (struct range_bounds));
727 TYPE_LOW_BOUND (result_type) = low_bound;
728 TYPE_HIGH_BOUND (result_type) = high_bound;
731 TYPE_UNSIGNED (result_type) = 1;
736 /* Set *LOWP and *HIGHP to the lower and upper bounds of discrete type
737 TYPE. Return 1 if type is a range type, 0 if it is discrete (and
738 bounds will fit in LONGEST), or -1 otherwise. */
741 get_discrete_bounds (struct type *type, LONGEST *lowp, LONGEST *highp)
743 CHECK_TYPEDEF (type);
744 switch (TYPE_CODE (type))
746 case TYPE_CODE_RANGE:
747 *lowp = TYPE_LOW_BOUND (type);
748 *highp = TYPE_HIGH_BOUND (type);
751 if (TYPE_NFIELDS (type) > 0)
753 /* The enums may not be sorted by value, so search all
757 *lowp = *highp = TYPE_FIELD_BITPOS (type, 0);
758 for (i = 0; i < TYPE_NFIELDS (type); i++)
760 if (TYPE_FIELD_BITPOS (type, i) < *lowp)
761 *lowp = TYPE_FIELD_BITPOS (type, i);
762 if (TYPE_FIELD_BITPOS (type, i) > *highp)
763 *highp = TYPE_FIELD_BITPOS (type, i);
766 /* Set unsigned indicator if warranted. */
769 TYPE_UNSIGNED (type) = 1;
783 if (TYPE_LENGTH (type) > sizeof (LONGEST)) /* Too big */
785 if (!TYPE_UNSIGNED (type))
787 *lowp = -(1 << (TYPE_LENGTH (type) * TARGET_CHAR_BIT - 1));
791 /* ... fall through for unsigned ints ... */
794 /* This round-about calculation is to avoid shifting by
795 TYPE_LENGTH (type) * TARGET_CHAR_BIT, which will not work
796 if TYPE_LENGTH (type) == sizeof (LONGEST). */
797 *highp = 1 << (TYPE_LENGTH (type) * TARGET_CHAR_BIT - 1);
798 *highp = (*highp - 1) | *highp;
805 /* Create an array type using either a blank type supplied in
806 RESULT_TYPE, or creating a new type, inheriting the objfile from
809 Elements will be of type ELEMENT_TYPE, the indices will be of type
812 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
813 sure it is TYPE_CODE_UNDEF before we bash it into an array
817 create_array_type (struct type *result_type,
818 struct type *element_type,
819 struct type *range_type)
821 LONGEST low_bound, high_bound;
823 if (result_type == NULL)
824 result_type = alloc_type_copy (range_type);
826 TYPE_CODE (result_type) = TYPE_CODE_ARRAY;
827 TYPE_TARGET_TYPE (result_type) = element_type;
828 if (get_discrete_bounds (range_type, &low_bound, &high_bound) < 0)
829 low_bound = high_bound = 0;
830 CHECK_TYPEDEF (element_type);
831 /* Be careful when setting the array length. Ada arrays can be
832 empty arrays with the high_bound being smaller than the low_bound.
833 In such cases, the array length should be zero. */
834 if (high_bound < low_bound)
835 TYPE_LENGTH (result_type) = 0;
837 TYPE_LENGTH (result_type) =
838 TYPE_LENGTH (element_type) * (high_bound - low_bound + 1);
839 TYPE_NFIELDS (result_type) = 1;
840 TYPE_FIELDS (result_type) =
841 (struct field *) TYPE_ZALLOC (result_type, sizeof (struct field));
842 TYPE_INDEX_TYPE (result_type) = range_type;
843 TYPE_VPTR_FIELDNO (result_type) = -1;
845 /* TYPE_FLAG_TARGET_STUB will take care of zero length arrays */
846 if (TYPE_LENGTH (result_type) == 0)
847 TYPE_TARGET_STUB (result_type) = 1;
853 lookup_array_range_type (struct type *element_type,
854 int low_bound, int high_bound)
856 struct gdbarch *gdbarch = get_type_arch (element_type);
857 struct type *index_type = builtin_type (gdbarch)->builtin_int;
858 struct type *range_type
859 = create_range_type (NULL, index_type, low_bound, high_bound);
860 return create_array_type (NULL, element_type, range_type);
863 /* Create a string type using either a blank type supplied in
864 RESULT_TYPE, or creating a new type. String types are similar
865 enough to array of char types that we can use create_array_type to
866 build the basic type and then bash it into a string type.
868 For fixed length strings, the range type contains 0 as the lower
869 bound and the length of the string minus one as the upper bound.
871 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
872 sure it is TYPE_CODE_UNDEF before we bash it into a string
876 create_string_type (struct type *result_type,
877 struct type *string_char_type,
878 struct type *range_type)
880 result_type = create_array_type (result_type,
883 TYPE_CODE (result_type) = TYPE_CODE_STRING;
888 lookup_string_range_type (struct type *string_char_type,
889 int low_bound, int high_bound)
891 struct type *result_type;
892 result_type = lookup_array_range_type (string_char_type,
893 low_bound, high_bound);
894 TYPE_CODE (result_type) = TYPE_CODE_STRING;
899 create_set_type (struct type *result_type, struct type *domain_type)
901 if (result_type == NULL)
902 result_type = alloc_type_copy (domain_type);
904 TYPE_CODE (result_type) = TYPE_CODE_SET;
905 TYPE_NFIELDS (result_type) = 1;
906 TYPE_FIELDS (result_type) = TYPE_ZALLOC (result_type, sizeof (struct field));
908 if (!TYPE_STUB (domain_type))
910 LONGEST low_bound, high_bound, bit_length;
911 if (get_discrete_bounds (domain_type, &low_bound, &high_bound) < 0)
912 low_bound = high_bound = 0;
913 bit_length = high_bound - low_bound + 1;
914 TYPE_LENGTH (result_type)
915 = (bit_length + TARGET_CHAR_BIT - 1) / TARGET_CHAR_BIT;
917 TYPE_UNSIGNED (result_type) = 1;
919 TYPE_FIELD_TYPE (result_type, 0) = domain_type;
924 /* Convert ARRAY_TYPE to a vector type. This may modify ARRAY_TYPE
925 and any array types nested inside it. */
928 make_vector_type (struct type *array_type)
930 struct type *inner_array, *elt_type;
933 /* Find the innermost array type, in case the array is
934 multi-dimensional. */
935 inner_array = array_type;
936 while (TYPE_CODE (TYPE_TARGET_TYPE (inner_array)) == TYPE_CODE_ARRAY)
937 inner_array = TYPE_TARGET_TYPE (inner_array);
939 elt_type = TYPE_TARGET_TYPE (inner_array);
940 if (TYPE_CODE (elt_type) == TYPE_CODE_INT)
942 flags = TYPE_INSTANCE_FLAGS (elt_type) | TYPE_FLAG_NOTTEXT;
943 elt_type = make_qualified_type (elt_type, flags, NULL);
944 TYPE_TARGET_TYPE (inner_array) = elt_type;
947 TYPE_VECTOR (array_type) = 1;
951 init_vector_type (struct type *elt_type, int n)
953 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 method of DOMAIN with type TO_TYPE.
985 METHOD just means `function that gets an extra "this" argument'.
987 When "smashing" the type, we preserve the objfile that the old type
988 pointed to, since we aren't changing where the type is actually
992 smash_to_method_type (struct type *type, struct type *domain,
993 struct type *to_type, struct field *args,
994 int nargs, int varargs)
997 TYPE_TARGET_TYPE (type) = to_type;
998 TYPE_DOMAIN_TYPE (type) = domain;
999 TYPE_FIELDS (type) = args;
1000 TYPE_NFIELDS (type) = nargs;
1002 TYPE_VARARGS (type) = 1;
1003 TYPE_LENGTH (type) = 1; /* In practice, this is never needed. */
1004 TYPE_CODE (type) = TYPE_CODE_METHOD;
1007 /* Return a typename for a struct/union/enum type without "struct ",
1008 "union ", or "enum ". If the type has a NULL name, return NULL. */
1011 type_name_no_tag (const struct type *type)
1013 if (TYPE_TAG_NAME (type) != NULL)
1014 return TYPE_TAG_NAME (type);
1016 /* Is there code which expects this to return the name if there is
1017 no tag name? My guess is that this is mainly used for C++ in
1018 cases where the two will always be the same. */
1019 return TYPE_NAME (type);
1022 /* Lookup a typedef or primitive type named NAME, visible in lexical
1023 block BLOCK. If NOERR is nonzero, return zero if NAME is not
1024 suitably defined. */
1027 lookup_typename (const struct language_defn *language,
1028 struct gdbarch *gdbarch, char *name,
1029 struct block *block, int noerr)
1034 sym = lookup_symbol (name, block, VAR_DOMAIN, 0);
1035 if (sym == NULL || SYMBOL_CLASS (sym) != LOC_TYPEDEF)
1037 tmp = language_lookup_primitive_type_by_name (language, gdbarch, name);
1042 else if (!tmp && noerr)
1048 error (_("No type named %s."), name);
1051 return (SYMBOL_TYPE (sym));
1055 lookup_unsigned_typename (const struct language_defn *language,
1056 struct gdbarch *gdbarch, char *name)
1058 char *uns = alloca (strlen (name) + 10);
1060 strcpy (uns, "unsigned ");
1061 strcpy (uns + 9, name);
1062 return lookup_typename (language, gdbarch, uns, (struct block *) NULL, 0);
1066 lookup_signed_typename (const struct language_defn *language,
1067 struct gdbarch *gdbarch, char *name)
1070 char *uns = alloca (strlen (name) + 8);
1072 strcpy (uns, "signed ");
1073 strcpy (uns + 7, name);
1074 t = lookup_typename (language, gdbarch, uns, (struct block *) NULL, 1);
1075 /* If we don't find "signed FOO" just try again with plain "FOO". */
1078 return lookup_typename (language, gdbarch, name, (struct block *) NULL, 0);
1081 /* Lookup a structure type named "struct NAME",
1082 visible in lexical block BLOCK. */
1085 lookup_struct (char *name, struct block *block)
1089 sym = lookup_symbol (name, block, STRUCT_DOMAIN, 0);
1093 error (_("No struct type named %s."), name);
1095 if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_STRUCT)
1097 error (_("This context has class, union or enum %s, not a struct."),
1100 return (SYMBOL_TYPE (sym));
1103 /* Lookup a union type named "union NAME",
1104 visible in lexical block BLOCK. */
1107 lookup_union (char *name, struct block *block)
1112 sym = lookup_symbol (name, block, STRUCT_DOMAIN, 0);
1115 error (_("No union type named %s."), name);
1117 t = SYMBOL_TYPE (sym);
1119 if (TYPE_CODE (t) == TYPE_CODE_UNION)
1122 /* C++ unions may come out with TYPE_CODE_CLASS, but we look at
1123 * a further "declared_type" field to discover it is really a union.
1125 if (HAVE_CPLUS_STRUCT (t))
1126 if (TYPE_DECLARED_TYPE (t) == DECLARED_TYPE_UNION)
1129 /* If we get here, it's not a union. */
1130 error (_("This context has class, struct or enum %s, not a union."),
1135 /* Lookup an enum type named "enum NAME",
1136 visible in lexical block BLOCK. */
1139 lookup_enum (char *name, struct block *block)
1143 sym = lookup_symbol (name, block, STRUCT_DOMAIN, 0);
1146 error (_("No enum type named %s."), name);
1148 if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_ENUM)
1150 error (_("This context has class, struct or union %s, not an enum."),
1153 return (SYMBOL_TYPE (sym));
1156 /* Lookup a template type named "template NAME<TYPE>",
1157 visible in lexical block BLOCK. */
1160 lookup_template_type (char *name, struct type *type,
1161 struct block *block)
1164 char *nam = (char *)
1165 alloca (strlen (name) + strlen (TYPE_NAME (type)) + 4);
1168 strcat (nam, TYPE_NAME (type));
1169 strcat (nam, " >"); /* FIXME, extra space still introduced in gcc? */
1171 sym = lookup_symbol (nam, block, VAR_DOMAIN, 0);
1175 error (_("No template type named %s."), name);
1177 if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_STRUCT)
1179 error (_("This context has class, union or enum %s, not a struct."),
1182 return (SYMBOL_TYPE (sym));
1185 /* Given a type TYPE, lookup the type of the component of type named
1188 TYPE can be either a struct or union, or a pointer or reference to
1189 a struct or union. If it is a pointer or reference, its target
1190 type is automatically used. Thus '.' and '->' are interchangable,
1191 as specified for the definitions of the expression element types
1192 STRUCTOP_STRUCT and STRUCTOP_PTR.
1194 If NOERR is nonzero, return zero if NAME is not suitably defined.
1195 If NAME is the name of a baseclass type, return that type. */
1198 lookup_struct_elt_type (struct type *type, char *name, int noerr)
1204 CHECK_TYPEDEF (type);
1205 if (TYPE_CODE (type) != TYPE_CODE_PTR
1206 && TYPE_CODE (type) != TYPE_CODE_REF)
1208 type = TYPE_TARGET_TYPE (type);
1211 if (TYPE_CODE (type) != TYPE_CODE_STRUCT
1212 && TYPE_CODE (type) != TYPE_CODE_UNION)
1214 target_terminal_ours ();
1215 gdb_flush (gdb_stdout);
1216 fprintf_unfiltered (gdb_stderr, "Type ");
1217 type_print (type, "", gdb_stderr, -1);
1218 error (_(" is not a structure or union type."));
1222 /* FIXME: This change put in by Michael seems incorrect for the case
1223 where the structure tag name is the same as the member name.
1224 I.E. when doing "ptype bell->bar" for "struct foo { int bar; int
1225 foo; } bell;" Disabled by fnf. */
1229 typename = type_name_no_tag (type);
1230 if (typename != NULL && strcmp (typename, name) == 0)
1235 for (i = TYPE_NFIELDS (type) - 1; i >= TYPE_N_BASECLASSES (type); i--)
1237 char *t_field_name = TYPE_FIELD_NAME (type, i);
1239 if (t_field_name && (strcmp_iw (t_field_name, name) == 0))
1241 return TYPE_FIELD_TYPE (type, i);
1245 /* OK, it's not in this class. Recursively check the baseclasses. */
1246 for (i = TYPE_N_BASECLASSES (type) - 1; i >= 0; i--)
1250 t = lookup_struct_elt_type (TYPE_BASECLASS (type, i), name, 1);
1262 target_terminal_ours ();
1263 gdb_flush (gdb_stdout);
1264 fprintf_unfiltered (gdb_stderr, "Type ");
1265 type_print (type, "", gdb_stderr, -1);
1266 fprintf_unfiltered (gdb_stderr, " has no component named ");
1267 fputs_filtered (name, gdb_stderr);
1269 return (struct type *) -1; /* For lint */
1272 /* Lookup the vptr basetype/fieldno values for TYPE.
1273 If found store vptr_basetype in *BASETYPEP if non-NULL, and return
1274 vptr_fieldno. Also, if found and basetype is from the same objfile,
1276 If not found, return -1 and ignore BASETYPEP.
1277 Callers should be aware that in some cases (for example,
1278 the type or one of its baseclasses is a stub type and we are
1279 debugging a .o file, or the compiler uses DWARF-2 and is not GCC),
1280 this function will not be able to find the
1281 virtual function table pointer, and vptr_fieldno will remain -1 and
1282 vptr_basetype will remain NULL or incomplete. */
1285 get_vptr_fieldno (struct type *type, struct type **basetypep)
1287 CHECK_TYPEDEF (type);
1289 if (TYPE_VPTR_FIELDNO (type) < 0)
1293 /* We must start at zero in case the first (and only) baseclass
1294 is virtual (and hence we cannot share the table pointer). */
1295 for (i = 0; i < TYPE_N_BASECLASSES (type); i++)
1297 struct type *baseclass = check_typedef (TYPE_BASECLASS (type, i));
1299 struct type *basetype;
1301 fieldno = get_vptr_fieldno (baseclass, &basetype);
1304 /* If the type comes from a different objfile we can't cache
1305 it, it may have a different lifetime. PR 2384 */
1306 if (TYPE_OBJFILE (type) == TYPE_OBJFILE (basetype))
1308 TYPE_VPTR_FIELDNO (type) = fieldno;
1309 TYPE_VPTR_BASETYPE (type) = basetype;
1312 *basetypep = basetype;
1323 *basetypep = TYPE_VPTR_BASETYPE (type);
1324 return TYPE_VPTR_FIELDNO (type);
1329 stub_noname_complaint (void)
1331 complaint (&symfile_complaints, _("stub type has NULL name"));
1334 /* Added by Bryan Boreham, Kewill, Sun Sep 17 18:07:17 1989.
1336 If this is a stubbed struct (i.e. declared as struct foo *), see if
1337 we can find a full definition in some other file. If so, copy this
1338 definition, so we can use it in future. There used to be a comment
1339 (but not any code) that if we don't find a full definition, we'd
1340 set a flag so we don't spend time in the future checking the same
1341 type. That would be a mistake, though--we might load in more
1342 symbols which contain a full definition for the type.
1344 This used to be coded as a macro, but I don't think it is called
1345 often enough to merit such treatment.
1347 Find the real type of TYPE. This function returns the real type,
1348 after removing all layers of typedefs and completing opaque or stub
1349 types. Completion changes the TYPE argument, but stripping of
1352 If TYPE is a TYPE_CODE_TYPEDEF, its length is (also) set to the length of
1353 the target type instead of zero. However, in the case of TYPE_CODE_TYPEDEF
1354 check_typedef can still return different type than the original TYPE
1358 check_typedef (struct type *type)
1360 struct type *orig_type = type;
1361 int is_const, is_volatile;
1365 while (TYPE_CODE (type) == TYPE_CODE_TYPEDEF)
1367 if (!TYPE_TARGET_TYPE (type))
1372 /* It is dangerous to call lookup_symbol if we are currently
1373 reading a symtab. Infinite recursion is one danger. */
1374 if (currently_reading_symtab)
1377 name = type_name_no_tag (type);
1378 /* FIXME: shouldn't we separately check the TYPE_NAME and
1379 the TYPE_TAG_NAME, and look in STRUCT_DOMAIN and/or
1380 VAR_DOMAIN as appropriate? (this code was written before
1381 TYPE_NAME and TYPE_TAG_NAME were separate). */
1384 stub_noname_complaint ();
1387 sym = lookup_symbol (name, 0, STRUCT_DOMAIN, 0);
1389 TYPE_TARGET_TYPE (type) = SYMBOL_TYPE (sym);
1390 else /* TYPE_CODE_UNDEF */
1391 TYPE_TARGET_TYPE (type) = alloc_type_arch (get_type_arch (type));
1393 type = TYPE_TARGET_TYPE (type);
1396 is_const = TYPE_CONST (type);
1397 is_volatile = TYPE_VOLATILE (type);
1399 /* If this is a struct/class/union with no fields, then check
1400 whether a full definition exists somewhere else. This is for
1401 systems where a type definition with no fields is issued for such
1402 types, instead of identifying them as stub types in the first
1405 if (TYPE_IS_OPAQUE (type)
1406 && opaque_type_resolution
1407 && !currently_reading_symtab)
1409 char *name = type_name_no_tag (type);
1410 struct type *newtype;
1413 stub_noname_complaint ();
1416 newtype = lookup_transparent_type (name);
1420 /* If the resolved type and the stub are in the same
1421 objfile, then replace the stub type with the real deal.
1422 But if they're in separate objfiles, leave the stub
1423 alone; we'll just look up the transparent type every time
1424 we call check_typedef. We can't create pointers between
1425 types allocated to different objfiles, since they may
1426 have different lifetimes. Trying to copy NEWTYPE over to
1427 TYPE's objfile is pointless, too, since you'll have to
1428 move over any other types NEWTYPE refers to, which could
1429 be an unbounded amount of stuff. */
1430 if (TYPE_OBJFILE (newtype) == TYPE_OBJFILE (type))
1431 make_cv_type (is_const, is_volatile, newtype, &type);
1436 /* Otherwise, rely on the stub flag being set for opaque/stubbed
1438 else if (TYPE_STUB (type) && !currently_reading_symtab)
1440 char *name = type_name_no_tag (type);
1441 /* FIXME: shouldn't we separately check the TYPE_NAME and the
1442 TYPE_TAG_NAME, and look in STRUCT_DOMAIN and/or VAR_DOMAIN
1443 as appropriate? (this code was written before TYPE_NAME and
1444 TYPE_TAG_NAME were separate). */
1448 stub_noname_complaint ();
1451 sym = lookup_symbol (name, 0, STRUCT_DOMAIN, 0);
1454 /* Same as above for opaque types, we can replace the stub
1455 with the complete type only if they are int the same
1457 if (TYPE_OBJFILE (SYMBOL_TYPE(sym)) == TYPE_OBJFILE (type))
1458 make_cv_type (is_const, is_volatile,
1459 SYMBOL_TYPE (sym), &type);
1461 type = SYMBOL_TYPE (sym);
1465 if (TYPE_TARGET_STUB (type))
1467 struct type *range_type;
1468 struct type *target_type = check_typedef (TYPE_TARGET_TYPE (type));
1470 if (TYPE_STUB (target_type) || TYPE_TARGET_STUB (target_type))
1474 else if (TYPE_CODE (type) == TYPE_CODE_ARRAY
1475 && TYPE_NFIELDS (type) == 1
1476 && (TYPE_CODE (range_type = TYPE_INDEX_TYPE (type))
1477 == TYPE_CODE_RANGE))
1479 /* Now recompute the length of the array type, based on its
1480 number of elements and the target type's length.
1481 Watch out for Ada null Ada arrays where the high bound
1482 is smaller than the low bound. */
1483 const LONGEST low_bound = TYPE_LOW_BOUND (range_type);
1484 const LONGEST high_bound = TYPE_HIGH_BOUND (range_type);
1487 if (high_bound < low_bound)
1490 /* For now, we conservatively take the array length to be 0
1491 if its length exceeds UINT_MAX. The code below assumes
1492 that for x < 0, (ULONGEST) x == -x + ULONGEST_MAX + 1,
1493 which is technically not guaranteed by C, but is usually true
1494 (because it would be true if x were unsigned with its
1495 high-order bit on). It uses the fact that
1496 high_bound-low_bound is always representable in
1497 ULONGEST and that if high_bound-low_bound+1 overflows,
1498 it overflows to 0. We must change these tests if we
1499 decide to increase the representation of TYPE_LENGTH
1500 from unsigned int to ULONGEST. */
1501 ULONGEST ulow = low_bound, uhigh = high_bound;
1502 ULONGEST tlen = TYPE_LENGTH (target_type);
1504 len = tlen * (uhigh - ulow + 1);
1505 if (tlen == 0 || (len / tlen - 1 + ulow) != uhigh
1509 TYPE_LENGTH (type) = len;
1510 TYPE_TARGET_STUB (type) = 0;
1512 else if (TYPE_CODE (type) == TYPE_CODE_RANGE)
1514 TYPE_LENGTH (type) = TYPE_LENGTH (target_type);
1515 TYPE_TARGET_STUB (type) = 0;
1518 /* Cache TYPE_LENGTH for future use. */
1519 TYPE_LENGTH (orig_type) = TYPE_LENGTH (type);
1523 /* Parse a type expression in the string [P..P+LENGTH). If an error
1524 occurs, silently return a void type. */
1526 static struct type *
1527 safe_parse_type (struct gdbarch *gdbarch, char *p, int length)
1529 struct ui_file *saved_gdb_stderr;
1532 /* Suppress error messages. */
1533 saved_gdb_stderr = gdb_stderr;
1534 gdb_stderr = ui_file_new ();
1536 /* Call parse_and_eval_type() without fear of longjmp()s. */
1537 if (!gdb_parse_and_eval_type (p, length, &type))
1538 type = builtin_type (gdbarch)->builtin_void;
1540 /* Stop suppressing error messages. */
1541 ui_file_delete (gdb_stderr);
1542 gdb_stderr = saved_gdb_stderr;
1547 /* Ugly hack to convert method stubs into method types.
1549 He ain't kiddin'. This demangles the name of the method into a
1550 string including argument types, parses out each argument type,
1551 generates a string casting a zero to that type, evaluates the
1552 string, and stuffs the resulting type into an argtype vector!!!
1553 Then it knows the type of the whole function (including argument
1554 types for overloading), which info used to be in the stab's but was
1555 removed to hack back the space required for them. */
1558 check_stub_method (struct type *type, int method_id, int signature_id)
1560 struct gdbarch *gdbarch = get_type_arch (type);
1562 char *mangled_name = gdb_mangle_name (type, method_id, signature_id);
1563 char *demangled_name = cplus_demangle (mangled_name,
1564 DMGL_PARAMS | DMGL_ANSI);
1565 char *argtypetext, *p;
1566 int depth = 0, argcount = 1;
1567 struct field *argtypes;
1570 /* Make sure we got back a function string that we can use. */
1572 p = strchr (demangled_name, '(');
1576 if (demangled_name == NULL || p == NULL)
1577 error (_("Internal: Cannot demangle mangled name `%s'."),
1580 /* Now, read in the parameters that define this type. */
1585 if (*p == '(' || *p == '<')
1589 else if (*p == ')' || *p == '>')
1593 else if (*p == ',' && depth == 0)
1601 /* If we read one argument and it was ``void'', don't count it. */
1602 if (strncmp (argtypetext, "(void)", 6) == 0)
1605 /* We need one extra slot, for the THIS pointer. */
1607 argtypes = (struct field *)
1608 TYPE_ALLOC (type, (argcount + 1) * sizeof (struct field));
1611 /* Add THIS pointer for non-static methods. */
1612 f = TYPE_FN_FIELDLIST1 (type, method_id);
1613 if (TYPE_FN_FIELD_STATIC_P (f, signature_id))
1617 argtypes[0].type = lookup_pointer_type (type);
1621 if (*p != ')') /* () means no args, skip while */
1626 if (depth <= 0 && (*p == ',' || *p == ')'))
1628 /* Avoid parsing of ellipsis, they will be handled below.
1629 Also avoid ``void'' as above. */
1630 if (strncmp (argtypetext, "...", p - argtypetext) != 0
1631 && strncmp (argtypetext, "void", p - argtypetext) != 0)
1633 argtypes[argcount].type =
1634 safe_parse_type (gdbarch, argtypetext, p - argtypetext);
1637 argtypetext = p + 1;
1640 if (*p == '(' || *p == '<')
1644 else if (*p == ')' || *p == '>')
1653 TYPE_FN_FIELD_PHYSNAME (f, signature_id) = mangled_name;
1655 /* Now update the old "stub" type into a real type. */
1656 mtype = TYPE_FN_FIELD_TYPE (f, signature_id);
1657 TYPE_DOMAIN_TYPE (mtype) = type;
1658 TYPE_FIELDS (mtype) = argtypes;
1659 TYPE_NFIELDS (mtype) = argcount;
1660 TYPE_STUB (mtype) = 0;
1661 TYPE_FN_FIELD_STUB (f, signature_id) = 0;
1663 TYPE_VARARGS (mtype) = 1;
1665 xfree (demangled_name);
1668 /* This is the external interface to check_stub_method, above. This
1669 function unstubs all of the signatures for TYPE's METHOD_ID method
1670 name. After calling this function TYPE_FN_FIELD_STUB will be
1671 cleared for each signature and TYPE_FN_FIELDLIST_NAME will be
1674 This function unfortunately can not die until stabs do. */
1677 check_stub_method_group (struct type *type, int method_id)
1679 int len = TYPE_FN_FIELDLIST_LENGTH (type, method_id);
1680 struct fn_field *f = TYPE_FN_FIELDLIST1 (type, method_id);
1681 int j, found_stub = 0;
1683 for (j = 0; j < len; j++)
1684 if (TYPE_FN_FIELD_STUB (f, j))
1687 check_stub_method (type, method_id, j);
1690 /* GNU v3 methods with incorrect names were corrected when we read
1691 in type information, because it was cheaper to do it then. The
1692 only GNU v2 methods with incorrect method names are operators and
1693 destructors; destructors were also corrected when we read in type
1696 Therefore the only thing we need to handle here are v2 operator
1698 if (found_stub && strncmp (TYPE_FN_FIELD_PHYSNAME (f, 0), "_Z", 2) != 0)
1701 char dem_opname[256];
1703 ret = cplus_demangle_opname (TYPE_FN_FIELDLIST_NAME (type,
1705 dem_opname, DMGL_ANSI);
1707 ret = cplus_demangle_opname (TYPE_FN_FIELDLIST_NAME (type,
1711 TYPE_FN_FIELDLIST_NAME (type, method_id) = xstrdup (dem_opname);
1715 const struct cplus_struct_type cplus_struct_default;
1718 allocate_cplus_struct_type (struct type *type)
1720 if (HAVE_CPLUS_STRUCT (type))
1721 /* Structure was already allocated. Nothing more to do. */
1724 TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_CPLUS_STUFF;
1725 TYPE_RAW_CPLUS_SPECIFIC (type) = (struct cplus_struct_type *)
1726 TYPE_ALLOC (type, sizeof (struct cplus_struct_type));
1727 *(TYPE_RAW_CPLUS_SPECIFIC (type)) = cplus_struct_default;
1730 const struct gnat_aux_type gnat_aux_default =
1733 /* Set the TYPE's type-specific kind to TYPE_SPECIFIC_GNAT_STUFF,
1734 and allocate the associated gnat-specific data. The gnat-specific
1735 data is also initialized to gnat_aux_default. */
1737 allocate_gnat_aux_type (struct type *type)
1739 TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_GNAT_STUFF;
1740 TYPE_GNAT_SPECIFIC (type) = (struct gnat_aux_type *)
1741 TYPE_ALLOC (type, sizeof (struct gnat_aux_type));
1742 *(TYPE_GNAT_SPECIFIC (type)) = gnat_aux_default;
1746 /* Helper function to initialize the standard scalar types.
1748 If NAME is non-NULL, then we make a copy of the string pointed
1749 to by name in the objfile_obstack for that objfile, and initialize
1750 the type name to that copy. There are places (mipsread.c in particular),
1751 where init_type is called with a NULL value for NAME). */
1754 init_type (enum type_code code, int length, int flags,
1755 char *name, struct objfile *objfile)
1759 type = alloc_type (objfile);
1760 TYPE_CODE (type) = code;
1761 TYPE_LENGTH (type) = length;
1763 gdb_assert (!(flags & (TYPE_FLAG_MIN - 1)));
1764 if (flags & TYPE_FLAG_UNSIGNED)
1765 TYPE_UNSIGNED (type) = 1;
1766 if (flags & TYPE_FLAG_NOSIGN)
1767 TYPE_NOSIGN (type) = 1;
1768 if (flags & TYPE_FLAG_STUB)
1769 TYPE_STUB (type) = 1;
1770 if (flags & TYPE_FLAG_TARGET_STUB)
1771 TYPE_TARGET_STUB (type) = 1;
1772 if (flags & TYPE_FLAG_STATIC)
1773 TYPE_STATIC (type) = 1;
1774 if (flags & TYPE_FLAG_PROTOTYPED)
1775 TYPE_PROTOTYPED (type) = 1;
1776 if (flags & TYPE_FLAG_INCOMPLETE)
1777 TYPE_INCOMPLETE (type) = 1;
1778 if (flags & TYPE_FLAG_VARARGS)
1779 TYPE_VARARGS (type) = 1;
1780 if (flags & TYPE_FLAG_VECTOR)
1781 TYPE_VECTOR (type) = 1;
1782 if (flags & TYPE_FLAG_STUB_SUPPORTED)
1783 TYPE_STUB_SUPPORTED (type) = 1;
1784 if (flags & TYPE_FLAG_NOTTEXT)
1785 TYPE_NOTTEXT (type) = 1;
1786 if (flags & TYPE_FLAG_FIXED_INSTANCE)
1787 TYPE_FIXED_INSTANCE (type) = 1;
1790 TYPE_NAME (type) = obsavestring (name, strlen (name),
1791 &objfile->objfile_obstack);
1795 if (name && strcmp (name, "char") == 0)
1796 TYPE_NOSIGN (type) = 1;
1800 case TYPE_CODE_STRUCT:
1801 case TYPE_CODE_UNION:
1802 case TYPE_CODE_NAMESPACE:
1803 INIT_CPLUS_SPECIFIC (type);
1806 TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_FLOATFORMAT;
1808 case TYPE_CODE_FUNC:
1809 TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_CALLING_CONVENTION;
1816 can_dereference (struct type *t)
1818 /* FIXME: Should we return true for references as well as
1823 && TYPE_CODE (t) == TYPE_CODE_PTR
1824 && TYPE_CODE (TYPE_TARGET_TYPE (t)) != TYPE_CODE_VOID);
1828 is_integral_type (struct type *t)
1833 && ((TYPE_CODE (t) == TYPE_CODE_INT)
1834 || (TYPE_CODE (t) == TYPE_CODE_ENUM)
1835 || (TYPE_CODE (t) == TYPE_CODE_FLAGS)
1836 || (TYPE_CODE (t) == TYPE_CODE_CHAR)
1837 || (TYPE_CODE (t) == TYPE_CODE_RANGE)
1838 || (TYPE_CODE (t) == TYPE_CODE_BOOL)));
1841 /* A helper function which returns true if types A and B represent the
1842 "same" class type. This is true if the types have the same main
1843 type, or the same name. */
1846 class_types_same_p (const struct type *a, const struct type *b)
1848 return (TYPE_MAIN_TYPE (a) == TYPE_MAIN_TYPE (b)
1849 || (TYPE_NAME (a) && TYPE_NAME (b)
1850 && !strcmp (TYPE_NAME (a), TYPE_NAME (b))));
1853 /* Check whether BASE is an ancestor or base class or DCLASS
1854 Return 1 if so, and 0 if not.
1855 Note: callers may want to check for identity of the types before
1856 calling this function -- identical types are considered to satisfy
1857 the ancestor relationship even if they're identical. */
1860 is_ancestor (struct type *base, struct type *dclass)
1864 CHECK_TYPEDEF (base);
1865 CHECK_TYPEDEF (dclass);
1867 if (class_types_same_p (base, dclass))
1870 for (i = 0; i < TYPE_N_BASECLASSES (dclass); i++)
1872 if (is_ancestor (base, TYPE_BASECLASS (dclass, i)))
1879 /* Like is_ancestor, but only returns true when BASE is a public
1880 ancestor of DCLASS. */
1883 is_public_ancestor (struct type *base, struct type *dclass)
1887 CHECK_TYPEDEF (base);
1888 CHECK_TYPEDEF (dclass);
1890 if (class_types_same_p (base, dclass))
1893 for (i = 0; i < TYPE_N_BASECLASSES (dclass); ++i)
1895 if (! BASETYPE_VIA_PUBLIC (dclass, i))
1897 if (is_public_ancestor (base, TYPE_BASECLASS (dclass, i)))
1904 /* A helper function for is_unique_ancestor. */
1907 is_unique_ancestor_worker (struct type *base, struct type *dclass,
1909 const bfd_byte *contents, CORE_ADDR address)
1913 CHECK_TYPEDEF (base);
1914 CHECK_TYPEDEF (dclass);
1916 for (i = 0; i < TYPE_N_BASECLASSES (dclass) && count < 2; ++i)
1918 struct type *iter = check_typedef (TYPE_BASECLASS (dclass, i));
1919 int this_offset = baseclass_offset (dclass, i, contents, address);
1921 if (this_offset == -1)
1922 error (_("virtual baseclass botch"));
1924 if (class_types_same_p (base, iter))
1926 /* If this is the first subclass, set *OFFSET and set count
1927 to 1. Otherwise, if this is at the same offset as
1928 previous instances, do nothing. Otherwise, increment
1932 *offset = this_offset;
1935 else if (this_offset == *offset)
1943 count += is_unique_ancestor_worker (base, iter, offset,
1944 contents + this_offset,
1945 address + this_offset);
1951 /* Like is_ancestor, but only returns true if BASE is a unique base
1952 class of the type of VAL. */
1955 is_unique_ancestor (struct type *base, struct value *val)
1959 return is_unique_ancestor_worker (base, value_type (val), &offset,
1960 value_contents (val),
1961 value_address (val)) == 1;
1967 /* Functions for overload resolution begin here */
1969 /* Compare two badness vectors A and B and return the result.
1970 0 => A and B are identical
1971 1 => A and B are incomparable
1972 2 => A is better than B
1973 3 => A is worse than B */
1976 compare_badness (struct badness_vector *a, struct badness_vector *b)
1980 short found_pos = 0; /* any positives in c? */
1981 short found_neg = 0; /* any negatives in c? */
1983 /* differing lengths => incomparable */
1984 if (a->length != b->length)
1987 /* Subtract b from a */
1988 for (i = 0; i < a->length; i++)
1990 tmp = a->rank[i] - b->rank[i];
2000 return 1; /* incomparable */
2002 return 3; /* A > B */
2008 return 2; /* A < B */
2010 return 0; /* A == B */
2014 /* Rank a function by comparing its parameter types (PARMS, length
2015 NPARMS), to the types of an argument list (ARGS, length NARGS).
2016 Return a pointer to a badness vector. This has NARGS + 1
2019 struct badness_vector *
2020 rank_function (struct type **parms, int nparms,
2021 struct type **args, int nargs)
2024 struct badness_vector *bv;
2025 int min_len = nparms < nargs ? nparms : nargs;
2027 bv = xmalloc (sizeof (struct badness_vector));
2028 bv->length = nargs + 1; /* add 1 for the length-match rank */
2029 bv->rank = xmalloc ((nargs + 1) * sizeof (int));
2031 /* First compare the lengths of the supplied lists.
2032 If there is a mismatch, set it to a high value. */
2034 /* pai/1997-06-03 FIXME: when we have debug info about default
2035 arguments and ellipsis parameter lists, we should consider those
2036 and rank the length-match more finely. */
2038 LENGTH_MATCH (bv) = (nargs != nparms) ? LENGTH_MISMATCH_BADNESS : 0;
2040 /* Now rank all the parameters of the candidate function */
2041 for (i = 1; i <= min_len; i++)
2042 bv->rank[i] = rank_one_type (parms[i-1], args[i-1]);
2044 /* If more arguments than parameters, add dummy entries */
2045 for (i = min_len + 1; i <= nargs; i++)
2046 bv->rank[i] = TOO_FEW_PARAMS_BADNESS;
2051 /* Compare the names of two integer types, assuming that any sign
2052 qualifiers have been checked already. We do it this way because
2053 there may be an "int" in the name of one of the types. */
2056 integer_types_same_name_p (const char *first, const char *second)
2058 int first_p, second_p;
2060 /* If both are shorts, return 1; if neither is a short, keep
2062 first_p = (strstr (first, "short") != NULL);
2063 second_p = (strstr (second, "short") != NULL);
2064 if (first_p && second_p)
2066 if (first_p || second_p)
2069 /* Likewise for long. */
2070 first_p = (strstr (first, "long") != NULL);
2071 second_p = (strstr (second, "long") != NULL);
2072 if (first_p && second_p)
2074 if (first_p || second_p)
2077 /* Likewise for char. */
2078 first_p = (strstr (first, "char") != NULL);
2079 second_p = (strstr (second, "char") != NULL);
2080 if (first_p && second_p)
2082 if (first_p || second_p)
2085 /* They must both be ints. */
2089 /* Compare one type (PARM) for compatibility with another (ARG).
2090 * PARM is intended to be the parameter type of a function; and
2091 * ARG is the supplied argument's type. This function tests if
2092 * the latter can be converted to the former.
2094 * Return 0 if they are identical types;
2095 * Otherwise, return an integer which corresponds to how compatible
2096 * PARM is to ARG. The higher the return value, the worse the match.
2097 * Generally the "bad" conversions are all uniformly assigned a 100. */
2100 rank_one_type (struct type *parm, struct type *arg)
2102 /* Identical type pointers. */
2103 /* However, this still doesn't catch all cases of same type for arg
2104 and param. The reason is that builtin types are different from
2105 the same ones constructed from the object. */
2109 /* Resolve typedefs */
2110 if (TYPE_CODE (parm) == TYPE_CODE_TYPEDEF)
2111 parm = check_typedef (parm);
2112 if (TYPE_CODE (arg) == TYPE_CODE_TYPEDEF)
2113 arg = check_typedef (arg);
2116 Well, damnit, if the names are exactly the same, I'll say they
2117 are exactly the same. This happens when we generate method
2118 stubs. The types won't point to the same address, but they
2119 really are the same.
2122 if (TYPE_NAME (parm) && TYPE_NAME (arg)
2123 && !strcmp (TYPE_NAME (parm), TYPE_NAME (arg)))
2126 /* Check if identical after resolving typedefs. */
2130 /* See through references, since we can almost make non-references
2132 if (TYPE_CODE (arg) == TYPE_CODE_REF)
2133 return (rank_one_type (parm, TYPE_TARGET_TYPE (arg))
2134 + REFERENCE_CONVERSION_BADNESS);
2135 if (TYPE_CODE (parm) == TYPE_CODE_REF)
2136 return (rank_one_type (TYPE_TARGET_TYPE (parm), arg)
2137 + REFERENCE_CONVERSION_BADNESS);
2139 /* Debugging only. */
2140 fprintf_filtered (gdb_stderr,
2141 "------ Arg is %s [%d], parm is %s [%d]\n",
2142 TYPE_NAME (arg), TYPE_CODE (arg),
2143 TYPE_NAME (parm), TYPE_CODE (parm));
2145 /* x -> y means arg of type x being supplied for parameter of type y */
2147 switch (TYPE_CODE (parm))
2150 switch (TYPE_CODE (arg))
2153 if (TYPE_CODE (TYPE_TARGET_TYPE (parm)) == TYPE_CODE_VOID
2154 && TYPE_CODE (TYPE_TARGET_TYPE (arg)) != TYPE_CODE_VOID)
2155 return VOID_PTR_CONVERSION_BADNESS;
2157 return rank_one_type (TYPE_TARGET_TYPE (parm),
2158 TYPE_TARGET_TYPE (arg));
2159 case TYPE_CODE_ARRAY:
2160 return rank_one_type (TYPE_TARGET_TYPE (parm),
2161 TYPE_TARGET_TYPE (arg));
2162 case TYPE_CODE_FUNC:
2163 return rank_one_type (TYPE_TARGET_TYPE (parm), arg);
2165 case TYPE_CODE_ENUM:
2166 case TYPE_CODE_FLAGS:
2167 case TYPE_CODE_CHAR:
2168 case TYPE_CODE_RANGE:
2169 case TYPE_CODE_BOOL:
2170 return POINTER_CONVERSION_BADNESS;
2172 return INCOMPATIBLE_TYPE_BADNESS;
2174 case TYPE_CODE_ARRAY:
2175 switch (TYPE_CODE (arg))
2178 case TYPE_CODE_ARRAY:
2179 return rank_one_type (TYPE_TARGET_TYPE (parm),
2180 TYPE_TARGET_TYPE (arg));
2182 return INCOMPATIBLE_TYPE_BADNESS;
2184 case TYPE_CODE_FUNC:
2185 switch (TYPE_CODE (arg))
2187 case TYPE_CODE_PTR: /* funcptr -> func */
2188 return rank_one_type (parm, TYPE_TARGET_TYPE (arg));
2190 return INCOMPATIBLE_TYPE_BADNESS;
2193 switch (TYPE_CODE (arg))
2196 if (TYPE_LENGTH (arg) == TYPE_LENGTH (parm))
2198 /* Deal with signed, unsigned, and plain chars and
2199 signed and unsigned ints. */
2200 if (TYPE_NOSIGN (parm))
2202 /* This case only for character types */
2203 if (TYPE_NOSIGN (arg))
2204 return 0; /* plain char -> plain char */
2205 else /* signed/unsigned char -> plain char */
2206 return INTEGER_CONVERSION_BADNESS;
2208 else if (TYPE_UNSIGNED (parm))
2210 if (TYPE_UNSIGNED (arg))
2212 /* unsigned int -> unsigned int, or
2213 unsigned long -> unsigned long */
2214 if (integer_types_same_name_p (TYPE_NAME (parm),
2217 else if (integer_types_same_name_p (TYPE_NAME (arg),
2219 && integer_types_same_name_p (TYPE_NAME (parm),
2221 return INTEGER_PROMOTION_BADNESS; /* unsigned int -> unsigned long */
2223 return INTEGER_CONVERSION_BADNESS; /* unsigned long -> unsigned int */
2227 if (integer_types_same_name_p (TYPE_NAME (arg),
2229 && integer_types_same_name_p (TYPE_NAME (parm),
2231 return INTEGER_CONVERSION_BADNESS; /* signed long -> unsigned int */
2233 return INTEGER_CONVERSION_BADNESS; /* signed int/long -> unsigned int/long */
2236 else if (!TYPE_NOSIGN (arg) && !TYPE_UNSIGNED (arg))
2238 if (integer_types_same_name_p (TYPE_NAME (parm),
2241 else if (integer_types_same_name_p (TYPE_NAME (arg),
2243 && integer_types_same_name_p (TYPE_NAME (parm),
2245 return INTEGER_PROMOTION_BADNESS;
2247 return INTEGER_CONVERSION_BADNESS;
2250 return INTEGER_CONVERSION_BADNESS;
2252 else if (TYPE_LENGTH (arg) < TYPE_LENGTH (parm))
2253 return INTEGER_PROMOTION_BADNESS;
2255 return INTEGER_CONVERSION_BADNESS;
2256 case TYPE_CODE_ENUM:
2257 case TYPE_CODE_FLAGS:
2258 case TYPE_CODE_CHAR:
2259 case TYPE_CODE_RANGE:
2260 case TYPE_CODE_BOOL:
2261 return INTEGER_PROMOTION_BADNESS;
2263 return INT_FLOAT_CONVERSION_BADNESS;
2265 return NS_POINTER_CONVERSION_BADNESS;
2267 return INCOMPATIBLE_TYPE_BADNESS;
2270 case TYPE_CODE_ENUM:
2271 switch (TYPE_CODE (arg))
2274 case TYPE_CODE_CHAR:
2275 case TYPE_CODE_RANGE:
2276 case TYPE_CODE_BOOL:
2277 case TYPE_CODE_ENUM:
2278 return INTEGER_CONVERSION_BADNESS;
2280 return INT_FLOAT_CONVERSION_BADNESS;
2282 return INCOMPATIBLE_TYPE_BADNESS;
2285 case TYPE_CODE_CHAR:
2286 switch (TYPE_CODE (arg))
2288 case TYPE_CODE_RANGE:
2289 case TYPE_CODE_BOOL:
2290 case TYPE_CODE_ENUM:
2291 return INTEGER_CONVERSION_BADNESS;
2293 return INT_FLOAT_CONVERSION_BADNESS;
2295 if (TYPE_LENGTH (arg) > TYPE_LENGTH (parm))
2296 return INTEGER_CONVERSION_BADNESS;
2297 else if (TYPE_LENGTH (arg) < TYPE_LENGTH (parm))
2298 return INTEGER_PROMOTION_BADNESS;
2299 /* >>> !! else fall through !! <<< */
2300 case TYPE_CODE_CHAR:
2301 /* Deal with signed, unsigned, and plain chars for C++ and
2302 with int cases falling through from previous case. */
2303 if (TYPE_NOSIGN (parm))
2305 if (TYPE_NOSIGN (arg))
2308 return INTEGER_CONVERSION_BADNESS;
2310 else if (TYPE_UNSIGNED (parm))
2312 if (TYPE_UNSIGNED (arg))
2315 return INTEGER_PROMOTION_BADNESS;
2317 else if (!TYPE_NOSIGN (arg) && !TYPE_UNSIGNED (arg))
2320 return INTEGER_CONVERSION_BADNESS;
2322 return INCOMPATIBLE_TYPE_BADNESS;
2325 case TYPE_CODE_RANGE:
2326 switch (TYPE_CODE (arg))
2329 case TYPE_CODE_CHAR:
2330 case TYPE_CODE_RANGE:
2331 case TYPE_CODE_BOOL:
2332 case TYPE_CODE_ENUM:
2333 return INTEGER_CONVERSION_BADNESS;
2335 return INT_FLOAT_CONVERSION_BADNESS;
2337 return INCOMPATIBLE_TYPE_BADNESS;
2340 case TYPE_CODE_BOOL:
2341 switch (TYPE_CODE (arg))
2344 case TYPE_CODE_CHAR:
2345 case TYPE_CODE_RANGE:
2346 case TYPE_CODE_ENUM:
2349 return BOOLEAN_CONVERSION_BADNESS;
2350 case TYPE_CODE_BOOL:
2353 return INCOMPATIBLE_TYPE_BADNESS;
2357 switch (TYPE_CODE (arg))
2360 if (TYPE_LENGTH (arg) < TYPE_LENGTH (parm))
2361 return FLOAT_PROMOTION_BADNESS;
2362 else if (TYPE_LENGTH (arg) == TYPE_LENGTH (parm))
2365 return FLOAT_CONVERSION_BADNESS;
2367 case TYPE_CODE_BOOL:
2368 case TYPE_CODE_ENUM:
2369 case TYPE_CODE_RANGE:
2370 case TYPE_CODE_CHAR:
2371 return INT_FLOAT_CONVERSION_BADNESS;
2373 return INCOMPATIBLE_TYPE_BADNESS;
2376 case TYPE_CODE_COMPLEX:
2377 switch (TYPE_CODE (arg))
2378 { /* Strictly not needed for C++, but... */
2380 return FLOAT_PROMOTION_BADNESS;
2381 case TYPE_CODE_COMPLEX:
2384 return INCOMPATIBLE_TYPE_BADNESS;
2387 case TYPE_CODE_STRUCT:
2388 /* currently same as TYPE_CODE_CLASS */
2389 switch (TYPE_CODE (arg))
2391 case TYPE_CODE_STRUCT:
2392 /* Check for derivation */
2393 if (is_ancestor (parm, arg))
2394 return BASE_CONVERSION_BADNESS;
2395 /* else fall through */
2397 return INCOMPATIBLE_TYPE_BADNESS;
2400 case TYPE_CODE_UNION:
2401 switch (TYPE_CODE (arg))
2403 case TYPE_CODE_UNION:
2405 return INCOMPATIBLE_TYPE_BADNESS;
2408 case TYPE_CODE_MEMBERPTR:
2409 switch (TYPE_CODE (arg))
2412 return INCOMPATIBLE_TYPE_BADNESS;
2415 case TYPE_CODE_METHOD:
2416 switch (TYPE_CODE (arg))
2420 return INCOMPATIBLE_TYPE_BADNESS;
2424 switch (TYPE_CODE (arg))
2428 return INCOMPATIBLE_TYPE_BADNESS;
2433 switch (TYPE_CODE (arg))
2437 return rank_one_type (TYPE_FIELD_TYPE (parm, 0),
2438 TYPE_FIELD_TYPE (arg, 0));
2440 return INCOMPATIBLE_TYPE_BADNESS;
2443 case TYPE_CODE_VOID:
2445 return INCOMPATIBLE_TYPE_BADNESS;
2446 } /* switch (TYPE_CODE (arg)) */
2450 /* End of functions for overload resolution */
2453 print_bit_vector (B_TYPE *bits, int nbits)
2457 for (bitno = 0; bitno < nbits; bitno++)
2459 if ((bitno % 8) == 0)
2461 puts_filtered (" ");
2463 if (B_TST (bits, bitno))
2464 printf_filtered (("1"));
2466 printf_filtered (("0"));
2470 /* Note the first arg should be the "this" pointer, we may not want to
2471 include it since we may get into a infinitely recursive
2475 print_arg_types (struct field *args, int nargs, int spaces)
2481 for (i = 0; i < nargs; i++)
2482 recursive_dump_type (args[i].type, spaces + 2);
2487 field_is_static (struct field *f)
2489 /* "static" fields are the fields whose location is not relative
2490 to the address of the enclosing struct. It would be nice to
2491 have a dedicated flag that would be set for static fields when
2492 the type is being created. But in practice, checking the field
2493 loc_kind should give us an accurate answer (at least as long as
2494 we assume that DWARF block locations are not going to be used
2495 for static fields). FIXME? */
2496 return (FIELD_LOC_KIND (*f) == FIELD_LOC_KIND_PHYSNAME
2497 || FIELD_LOC_KIND (*f) == FIELD_LOC_KIND_PHYSADDR);
2501 dump_fn_fieldlists (struct type *type, int spaces)
2507 printfi_filtered (spaces, "fn_fieldlists ");
2508 gdb_print_host_address (TYPE_FN_FIELDLISTS (type), gdb_stdout);
2509 printf_filtered ("\n");
2510 for (method_idx = 0; method_idx < TYPE_NFN_FIELDS (type); method_idx++)
2512 f = TYPE_FN_FIELDLIST1 (type, method_idx);
2513 printfi_filtered (spaces + 2, "[%d] name '%s' (",
2515 TYPE_FN_FIELDLIST_NAME (type, method_idx));
2516 gdb_print_host_address (TYPE_FN_FIELDLIST_NAME (type, method_idx),
2518 printf_filtered (_(") length %d\n"),
2519 TYPE_FN_FIELDLIST_LENGTH (type, method_idx));
2520 for (overload_idx = 0;
2521 overload_idx < TYPE_FN_FIELDLIST_LENGTH (type, method_idx);
2524 printfi_filtered (spaces + 4, "[%d] physname '%s' (",
2526 TYPE_FN_FIELD_PHYSNAME (f, overload_idx));
2527 gdb_print_host_address (TYPE_FN_FIELD_PHYSNAME (f, overload_idx),
2529 printf_filtered (")\n");
2530 printfi_filtered (spaces + 8, "type ");
2531 gdb_print_host_address (TYPE_FN_FIELD_TYPE (f, overload_idx),
2533 printf_filtered ("\n");
2535 recursive_dump_type (TYPE_FN_FIELD_TYPE (f, overload_idx),
2538 printfi_filtered (spaces + 8, "args ");
2539 gdb_print_host_address (TYPE_FN_FIELD_ARGS (f, overload_idx),
2541 printf_filtered ("\n");
2543 print_arg_types (TYPE_FN_FIELD_ARGS (f, overload_idx),
2544 TYPE_NFIELDS (TYPE_FN_FIELD_TYPE (f,
2547 printfi_filtered (spaces + 8, "fcontext ");
2548 gdb_print_host_address (TYPE_FN_FIELD_FCONTEXT (f, overload_idx),
2550 printf_filtered ("\n");
2552 printfi_filtered (spaces + 8, "is_const %d\n",
2553 TYPE_FN_FIELD_CONST (f, overload_idx));
2554 printfi_filtered (spaces + 8, "is_volatile %d\n",
2555 TYPE_FN_FIELD_VOLATILE (f, overload_idx));
2556 printfi_filtered (spaces + 8, "is_private %d\n",
2557 TYPE_FN_FIELD_PRIVATE (f, overload_idx));
2558 printfi_filtered (spaces + 8, "is_protected %d\n",
2559 TYPE_FN_FIELD_PROTECTED (f, overload_idx));
2560 printfi_filtered (spaces + 8, "is_stub %d\n",
2561 TYPE_FN_FIELD_STUB (f, overload_idx));
2562 printfi_filtered (spaces + 8, "voffset %u\n",
2563 TYPE_FN_FIELD_VOFFSET (f, overload_idx));
2569 print_cplus_stuff (struct type *type, int spaces)
2571 printfi_filtered (spaces, "n_baseclasses %d\n",
2572 TYPE_N_BASECLASSES (type));
2573 printfi_filtered (spaces, "nfn_fields %d\n",
2574 TYPE_NFN_FIELDS (type));
2575 printfi_filtered (spaces, "nfn_fields_total %d\n",
2576 TYPE_NFN_FIELDS_TOTAL (type));
2577 if (TYPE_N_BASECLASSES (type) > 0)
2579 printfi_filtered (spaces, "virtual_field_bits (%d bits at *",
2580 TYPE_N_BASECLASSES (type));
2581 gdb_print_host_address (TYPE_FIELD_VIRTUAL_BITS (type),
2583 printf_filtered (")");
2585 print_bit_vector (TYPE_FIELD_VIRTUAL_BITS (type),
2586 TYPE_N_BASECLASSES (type));
2587 puts_filtered ("\n");
2589 if (TYPE_NFIELDS (type) > 0)
2591 if (TYPE_FIELD_PRIVATE_BITS (type) != NULL)
2593 printfi_filtered (spaces,
2594 "private_field_bits (%d bits at *",
2595 TYPE_NFIELDS (type));
2596 gdb_print_host_address (TYPE_FIELD_PRIVATE_BITS (type),
2598 printf_filtered (")");
2599 print_bit_vector (TYPE_FIELD_PRIVATE_BITS (type),
2600 TYPE_NFIELDS (type));
2601 puts_filtered ("\n");
2603 if (TYPE_FIELD_PROTECTED_BITS (type) != NULL)
2605 printfi_filtered (spaces,
2606 "protected_field_bits (%d bits at *",
2607 TYPE_NFIELDS (type));
2608 gdb_print_host_address (TYPE_FIELD_PROTECTED_BITS (type),
2610 printf_filtered (")");
2611 print_bit_vector (TYPE_FIELD_PROTECTED_BITS (type),
2612 TYPE_NFIELDS (type));
2613 puts_filtered ("\n");
2616 if (TYPE_NFN_FIELDS (type) > 0)
2618 dump_fn_fieldlists (type, spaces);
2622 /* Print the contents of the TYPE's type_specific union, assuming that
2623 its type-specific kind is TYPE_SPECIFIC_GNAT_STUFF. */
2626 print_gnat_stuff (struct type *type, int spaces)
2628 struct type *descriptive_type = TYPE_DESCRIPTIVE_TYPE (type);
2630 recursive_dump_type (descriptive_type, spaces + 2);
2633 static struct obstack dont_print_type_obstack;
2636 recursive_dump_type (struct type *type, int spaces)
2641 obstack_begin (&dont_print_type_obstack, 0);
2643 if (TYPE_NFIELDS (type) > 0
2644 || (HAVE_CPLUS_STRUCT (type) && TYPE_NFN_FIELDS (type) > 0))
2646 struct type **first_dont_print
2647 = (struct type **) obstack_base (&dont_print_type_obstack);
2649 int i = (struct type **)
2650 obstack_next_free (&dont_print_type_obstack) - first_dont_print;
2654 if (type == first_dont_print[i])
2656 printfi_filtered (spaces, "type node ");
2657 gdb_print_host_address (type, gdb_stdout);
2658 printf_filtered (_(" <same as already seen type>\n"));
2663 obstack_ptr_grow (&dont_print_type_obstack, type);
2666 printfi_filtered (spaces, "type node ");
2667 gdb_print_host_address (type, gdb_stdout);
2668 printf_filtered ("\n");
2669 printfi_filtered (spaces, "name '%s' (",
2670 TYPE_NAME (type) ? TYPE_NAME (type) : "<NULL>");
2671 gdb_print_host_address (TYPE_NAME (type), gdb_stdout);
2672 printf_filtered (")\n");
2673 printfi_filtered (spaces, "tagname '%s' (",
2674 TYPE_TAG_NAME (type) ? TYPE_TAG_NAME (type) : "<NULL>");
2675 gdb_print_host_address (TYPE_TAG_NAME (type), gdb_stdout);
2676 printf_filtered (")\n");
2677 printfi_filtered (spaces, "code 0x%x ", TYPE_CODE (type));
2678 switch (TYPE_CODE (type))
2680 case TYPE_CODE_UNDEF:
2681 printf_filtered ("(TYPE_CODE_UNDEF)");
2684 printf_filtered ("(TYPE_CODE_PTR)");
2686 case TYPE_CODE_ARRAY:
2687 printf_filtered ("(TYPE_CODE_ARRAY)");
2689 case TYPE_CODE_STRUCT:
2690 printf_filtered ("(TYPE_CODE_STRUCT)");
2692 case TYPE_CODE_UNION:
2693 printf_filtered ("(TYPE_CODE_UNION)");
2695 case TYPE_CODE_ENUM:
2696 printf_filtered ("(TYPE_CODE_ENUM)");
2698 case TYPE_CODE_FLAGS:
2699 printf_filtered ("(TYPE_CODE_FLAGS)");
2701 case TYPE_CODE_FUNC:
2702 printf_filtered ("(TYPE_CODE_FUNC)");
2705 printf_filtered ("(TYPE_CODE_INT)");
2708 printf_filtered ("(TYPE_CODE_FLT)");
2710 case TYPE_CODE_VOID:
2711 printf_filtered ("(TYPE_CODE_VOID)");
2714 printf_filtered ("(TYPE_CODE_SET)");
2716 case TYPE_CODE_RANGE:
2717 printf_filtered ("(TYPE_CODE_RANGE)");
2719 case TYPE_CODE_STRING:
2720 printf_filtered ("(TYPE_CODE_STRING)");
2722 case TYPE_CODE_BITSTRING:
2723 printf_filtered ("(TYPE_CODE_BITSTRING)");
2725 case TYPE_CODE_ERROR:
2726 printf_filtered ("(TYPE_CODE_ERROR)");
2728 case TYPE_CODE_MEMBERPTR:
2729 printf_filtered ("(TYPE_CODE_MEMBERPTR)");
2731 case TYPE_CODE_METHODPTR:
2732 printf_filtered ("(TYPE_CODE_METHODPTR)");
2734 case TYPE_CODE_METHOD:
2735 printf_filtered ("(TYPE_CODE_METHOD)");
2738 printf_filtered ("(TYPE_CODE_REF)");
2740 case TYPE_CODE_CHAR:
2741 printf_filtered ("(TYPE_CODE_CHAR)");
2743 case TYPE_CODE_BOOL:
2744 printf_filtered ("(TYPE_CODE_BOOL)");
2746 case TYPE_CODE_COMPLEX:
2747 printf_filtered ("(TYPE_CODE_COMPLEX)");
2749 case TYPE_CODE_TYPEDEF:
2750 printf_filtered ("(TYPE_CODE_TYPEDEF)");
2752 case TYPE_CODE_TEMPLATE:
2753 printf_filtered ("(TYPE_CODE_TEMPLATE)");
2755 case TYPE_CODE_TEMPLATE_ARG:
2756 printf_filtered ("(TYPE_CODE_TEMPLATE_ARG)");
2758 case TYPE_CODE_NAMESPACE:
2759 printf_filtered ("(TYPE_CODE_NAMESPACE)");
2762 printf_filtered ("(UNKNOWN TYPE CODE)");
2765 puts_filtered ("\n");
2766 printfi_filtered (spaces, "length %d\n", TYPE_LENGTH (type));
2767 if (TYPE_OBJFILE_OWNED (type))
2769 printfi_filtered (spaces, "objfile ");
2770 gdb_print_host_address (TYPE_OWNER (type).objfile, gdb_stdout);
2774 printfi_filtered (spaces, "gdbarch ");
2775 gdb_print_host_address (TYPE_OWNER (type).gdbarch, gdb_stdout);
2777 printf_filtered ("\n");
2778 printfi_filtered (spaces, "target_type ");
2779 gdb_print_host_address (TYPE_TARGET_TYPE (type), gdb_stdout);
2780 printf_filtered ("\n");
2781 if (TYPE_TARGET_TYPE (type) != NULL)
2783 recursive_dump_type (TYPE_TARGET_TYPE (type), spaces + 2);
2785 printfi_filtered (spaces, "pointer_type ");
2786 gdb_print_host_address (TYPE_POINTER_TYPE (type), gdb_stdout);
2787 printf_filtered ("\n");
2788 printfi_filtered (spaces, "reference_type ");
2789 gdb_print_host_address (TYPE_REFERENCE_TYPE (type), gdb_stdout);
2790 printf_filtered ("\n");
2791 printfi_filtered (spaces, "type_chain ");
2792 gdb_print_host_address (TYPE_CHAIN (type), gdb_stdout);
2793 printf_filtered ("\n");
2794 printfi_filtered (spaces, "instance_flags 0x%x",
2795 TYPE_INSTANCE_FLAGS (type));
2796 if (TYPE_CONST (type))
2798 puts_filtered (" TYPE_FLAG_CONST");
2800 if (TYPE_VOLATILE (type))
2802 puts_filtered (" TYPE_FLAG_VOLATILE");
2804 if (TYPE_CODE_SPACE (type))
2806 puts_filtered (" TYPE_FLAG_CODE_SPACE");
2808 if (TYPE_DATA_SPACE (type))
2810 puts_filtered (" TYPE_FLAG_DATA_SPACE");
2812 if (TYPE_ADDRESS_CLASS_1 (type))
2814 puts_filtered (" TYPE_FLAG_ADDRESS_CLASS_1");
2816 if (TYPE_ADDRESS_CLASS_2 (type))
2818 puts_filtered (" TYPE_FLAG_ADDRESS_CLASS_2");
2820 puts_filtered ("\n");
2822 printfi_filtered (spaces, "flags");
2823 if (TYPE_UNSIGNED (type))
2825 puts_filtered (" TYPE_FLAG_UNSIGNED");
2827 if (TYPE_NOSIGN (type))
2829 puts_filtered (" TYPE_FLAG_NOSIGN");
2831 if (TYPE_STUB (type))
2833 puts_filtered (" TYPE_FLAG_STUB");
2835 if (TYPE_TARGET_STUB (type))
2837 puts_filtered (" TYPE_FLAG_TARGET_STUB");
2839 if (TYPE_STATIC (type))
2841 puts_filtered (" TYPE_FLAG_STATIC");
2843 if (TYPE_PROTOTYPED (type))
2845 puts_filtered (" TYPE_FLAG_PROTOTYPED");
2847 if (TYPE_INCOMPLETE (type))
2849 puts_filtered (" TYPE_FLAG_INCOMPLETE");
2851 if (TYPE_VARARGS (type))
2853 puts_filtered (" TYPE_FLAG_VARARGS");
2855 /* This is used for things like AltiVec registers on ppc. Gcc emits
2856 an attribute for the array type, which tells whether or not we
2857 have a vector, instead of a regular array. */
2858 if (TYPE_VECTOR (type))
2860 puts_filtered (" TYPE_FLAG_VECTOR");
2862 if (TYPE_FIXED_INSTANCE (type))
2864 puts_filtered (" TYPE_FIXED_INSTANCE");
2866 if (TYPE_STUB_SUPPORTED (type))
2868 puts_filtered (" TYPE_STUB_SUPPORTED");
2870 if (TYPE_NOTTEXT (type))
2872 puts_filtered (" TYPE_NOTTEXT");
2874 puts_filtered ("\n");
2875 printfi_filtered (spaces, "nfields %d ", TYPE_NFIELDS (type));
2876 gdb_print_host_address (TYPE_FIELDS (type), gdb_stdout);
2877 puts_filtered ("\n");
2878 for (idx = 0; idx < TYPE_NFIELDS (type); idx++)
2880 printfi_filtered (spaces + 2,
2881 "[%d] bitpos %d bitsize %d type ",
2882 idx, TYPE_FIELD_BITPOS (type, idx),
2883 TYPE_FIELD_BITSIZE (type, idx));
2884 gdb_print_host_address (TYPE_FIELD_TYPE (type, idx), gdb_stdout);
2885 printf_filtered (" name '%s' (",
2886 TYPE_FIELD_NAME (type, idx) != NULL
2887 ? TYPE_FIELD_NAME (type, idx)
2889 gdb_print_host_address (TYPE_FIELD_NAME (type, idx), gdb_stdout);
2890 printf_filtered (")\n");
2891 if (TYPE_FIELD_TYPE (type, idx) != NULL)
2893 recursive_dump_type (TYPE_FIELD_TYPE (type, idx), spaces + 4);
2896 if (TYPE_CODE (type) == TYPE_CODE_RANGE)
2898 printfi_filtered (spaces, "low %s%s high %s%s\n",
2899 plongest (TYPE_LOW_BOUND (type)),
2900 TYPE_LOW_BOUND_UNDEFINED (type) ? " (undefined)" : "",
2901 plongest (TYPE_HIGH_BOUND (type)),
2902 TYPE_HIGH_BOUND_UNDEFINED (type) ? " (undefined)" : "");
2904 printfi_filtered (spaces, "vptr_basetype ");
2905 gdb_print_host_address (TYPE_VPTR_BASETYPE (type), gdb_stdout);
2906 puts_filtered ("\n");
2907 if (TYPE_VPTR_BASETYPE (type) != NULL)
2909 recursive_dump_type (TYPE_VPTR_BASETYPE (type), spaces + 2);
2911 printfi_filtered (spaces, "vptr_fieldno %d\n",
2912 TYPE_VPTR_FIELDNO (type));
2914 switch (TYPE_SPECIFIC_FIELD (type))
2916 case TYPE_SPECIFIC_CPLUS_STUFF:
2917 printfi_filtered (spaces, "cplus_stuff ");
2918 gdb_print_host_address (TYPE_CPLUS_SPECIFIC (type),
2920 puts_filtered ("\n");
2921 print_cplus_stuff (type, spaces);
2924 case TYPE_SPECIFIC_GNAT_STUFF:
2925 printfi_filtered (spaces, "gnat_stuff ");
2926 gdb_print_host_address (TYPE_GNAT_SPECIFIC (type), gdb_stdout);
2927 puts_filtered ("\n");
2928 print_gnat_stuff (type, spaces);
2931 case TYPE_SPECIFIC_FLOATFORMAT:
2932 printfi_filtered (spaces, "floatformat ");
2933 if (TYPE_FLOATFORMAT (type) == NULL)
2934 puts_filtered ("(null)");
2937 puts_filtered ("{ ");
2938 if (TYPE_FLOATFORMAT (type)[0] == NULL
2939 || TYPE_FLOATFORMAT (type)[0]->name == NULL)
2940 puts_filtered ("(null)");
2942 puts_filtered (TYPE_FLOATFORMAT (type)[0]->name);
2944 puts_filtered (", ");
2945 if (TYPE_FLOATFORMAT (type)[1] == NULL
2946 || TYPE_FLOATFORMAT (type)[1]->name == NULL)
2947 puts_filtered ("(null)");
2949 puts_filtered (TYPE_FLOATFORMAT (type)[1]->name);
2951 puts_filtered (" }");
2953 puts_filtered ("\n");
2956 case TYPE_SPECIFIC_CALLING_CONVENTION:
2957 printfi_filtered (spaces, "calling_convention %d\n",
2958 TYPE_CALLING_CONVENTION (type));
2963 obstack_free (&dont_print_type_obstack, NULL);
2966 /* Trivial helpers for the libiberty hash table, for mapping one
2971 struct type *old, *new;
2975 type_pair_hash (const void *item)
2977 const struct type_pair *pair = item;
2978 return htab_hash_pointer (pair->old);
2982 type_pair_eq (const void *item_lhs, const void *item_rhs)
2984 const struct type_pair *lhs = item_lhs, *rhs = item_rhs;
2985 return lhs->old == rhs->old;
2988 /* Allocate the hash table used by copy_type_recursive to walk
2989 types without duplicates. We use OBJFILE's obstack, because
2990 OBJFILE is about to be deleted. */
2993 create_copied_types_hash (struct objfile *objfile)
2995 return htab_create_alloc_ex (1, type_pair_hash, type_pair_eq,
2996 NULL, &objfile->objfile_obstack,
2997 hashtab_obstack_allocate,
2998 dummy_obstack_deallocate);
3001 /* Recursively copy (deep copy) TYPE, if it is associated with
3002 OBJFILE. Return a new type allocated using malloc, a saved type if
3003 we have already visited TYPE (using COPIED_TYPES), or TYPE if it is
3004 not associated with OBJFILE. */
3007 copy_type_recursive (struct objfile *objfile,
3009 htab_t copied_types)
3011 struct type_pair *stored, pair;
3013 struct type *new_type;
3015 if (! TYPE_OBJFILE_OWNED (type))
3018 /* This type shouldn't be pointing to any types in other objfiles;
3019 if it did, the type might disappear unexpectedly. */
3020 gdb_assert (TYPE_OBJFILE (type) == objfile);
3023 slot = htab_find_slot (copied_types, &pair, INSERT);
3025 return ((struct type_pair *) *slot)->new;
3027 new_type = alloc_type_arch (get_type_arch (type));
3029 /* We must add the new type to the hash table immediately, in case
3030 we encounter this type again during a recursive call below. */
3031 stored = obstack_alloc (&objfile->objfile_obstack, sizeof (struct type_pair));
3033 stored->new = new_type;
3036 /* Copy the common fields of types. For the main type, we simply
3037 copy the entire thing and then update specific fields as needed. */
3038 *TYPE_MAIN_TYPE (new_type) = *TYPE_MAIN_TYPE (type);
3039 TYPE_OBJFILE_OWNED (new_type) = 0;
3040 TYPE_OWNER (new_type).gdbarch = get_type_arch (type);
3042 if (TYPE_NAME (type))
3043 TYPE_NAME (new_type) = xstrdup (TYPE_NAME (type));
3044 if (TYPE_TAG_NAME (type))
3045 TYPE_TAG_NAME (new_type) = xstrdup (TYPE_TAG_NAME (type));
3047 TYPE_INSTANCE_FLAGS (new_type) = TYPE_INSTANCE_FLAGS (type);
3048 TYPE_LENGTH (new_type) = TYPE_LENGTH (type);
3050 /* Copy the fields. */
3051 if (TYPE_NFIELDS (type))
3055 nfields = TYPE_NFIELDS (type);
3056 TYPE_FIELDS (new_type) = XCALLOC (nfields, struct field);
3057 for (i = 0; i < nfields; i++)
3059 TYPE_FIELD_ARTIFICIAL (new_type, i) =
3060 TYPE_FIELD_ARTIFICIAL (type, i);
3061 TYPE_FIELD_BITSIZE (new_type, i) = TYPE_FIELD_BITSIZE (type, i);
3062 if (TYPE_FIELD_TYPE (type, i))
3063 TYPE_FIELD_TYPE (new_type, i)
3064 = copy_type_recursive (objfile, TYPE_FIELD_TYPE (type, i),
3066 if (TYPE_FIELD_NAME (type, i))
3067 TYPE_FIELD_NAME (new_type, i) =
3068 xstrdup (TYPE_FIELD_NAME (type, i));
3069 switch (TYPE_FIELD_LOC_KIND (type, i))
3071 case FIELD_LOC_KIND_BITPOS:
3072 SET_FIELD_BITPOS (TYPE_FIELD (new_type, i),
3073 TYPE_FIELD_BITPOS (type, i));
3075 case FIELD_LOC_KIND_PHYSADDR:
3076 SET_FIELD_PHYSADDR (TYPE_FIELD (new_type, i),
3077 TYPE_FIELD_STATIC_PHYSADDR (type, i));
3079 case FIELD_LOC_KIND_PHYSNAME:
3080 SET_FIELD_PHYSNAME (TYPE_FIELD (new_type, i),
3081 xstrdup (TYPE_FIELD_STATIC_PHYSNAME (type,
3085 internal_error (__FILE__, __LINE__,
3086 _("Unexpected type field location kind: %d"),
3087 TYPE_FIELD_LOC_KIND (type, i));
3092 /* For range types, copy the bounds information. */
3093 if (TYPE_CODE (type) == TYPE_CODE_RANGE)
3095 TYPE_RANGE_DATA (new_type) = xmalloc (sizeof (struct range_bounds));
3096 *TYPE_RANGE_DATA (new_type) = *TYPE_RANGE_DATA (type);
3099 /* Copy pointers to other types. */
3100 if (TYPE_TARGET_TYPE (type))
3101 TYPE_TARGET_TYPE (new_type) =
3102 copy_type_recursive (objfile,
3103 TYPE_TARGET_TYPE (type),
3105 if (TYPE_VPTR_BASETYPE (type))
3106 TYPE_VPTR_BASETYPE (new_type) =
3107 copy_type_recursive (objfile,
3108 TYPE_VPTR_BASETYPE (type),
3110 /* Maybe copy the type_specific bits.
3112 NOTE drow/2005-12-09: We do not copy the C++-specific bits like
3113 base classes and methods. There's no fundamental reason why we
3114 can't, but at the moment it is not needed. */
3116 if (TYPE_CODE (type) == TYPE_CODE_FLT)
3117 TYPE_FLOATFORMAT (new_type) = TYPE_FLOATFORMAT (type);
3118 else if (TYPE_CODE (type) == TYPE_CODE_STRUCT
3119 || TYPE_CODE (type) == TYPE_CODE_UNION
3120 || TYPE_CODE (type) == TYPE_CODE_TEMPLATE
3121 || TYPE_CODE (type) == TYPE_CODE_NAMESPACE)
3122 INIT_CPLUS_SPECIFIC (new_type);
3127 /* Make a copy of the given TYPE, except that the pointer & reference
3128 types are not preserved.
3130 This function assumes that the given type has an associated objfile.
3131 This objfile is used to allocate the new type. */
3134 copy_type (const struct type *type)
3136 struct type *new_type;
3138 gdb_assert (TYPE_OBJFILE_OWNED (type));
3140 new_type = alloc_type_copy (type);
3141 TYPE_INSTANCE_FLAGS (new_type) = TYPE_INSTANCE_FLAGS (type);
3142 TYPE_LENGTH (new_type) = TYPE_LENGTH (type);
3143 memcpy (TYPE_MAIN_TYPE (new_type), TYPE_MAIN_TYPE (type),
3144 sizeof (struct main_type));
3150 /* Helper functions to initialize architecture-specific types. */
3152 /* Allocate a type structure associated with GDBARCH and set its
3153 CODE, LENGTH, and NAME fields. */
3155 arch_type (struct gdbarch *gdbarch,
3156 enum type_code code, int length, char *name)
3160 type = alloc_type_arch (gdbarch);
3161 TYPE_CODE (type) = code;
3162 TYPE_LENGTH (type) = length;
3165 TYPE_NAME (type) = xstrdup (name);
3170 /* Allocate a TYPE_CODE_INT type structure associated with GDBARCH.
3171 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
3172 the type's TYPE_UNSIGNED flag. NAME is the type name. */
3174 arch_integer_type (struct gdbarch *gdbarch,
3175 int bit, int unsigned_p, char *name)
3179 t = arch_type (gdbarch, TYPE_CODE_INT, bit / TARGET_CHAR_BIT, name);
3181 TYPE_UNSIGNED (t) = 1;
3182 if (name && strcmp (name, "char") == 0)
3183 TYPE_NOSIGN (t) = 1;
3188 /* Allocate a TYPE_CODE_CHAR type structure associated with GDBARCH.
3189 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
3190 the type's TYPE_UNSIGNED flag. NAME is the type name. */
3192 arch_character_type (struct gdbarch *gdbarch,
3193 int bit, int unsigned_p, char *name)
3197 t = arch_type (gdbarch, TYPE_CODE_CHAR, bit / TARGET_CHAR_BIT, name);
3199 TYPE_UNSIGNED (t) = 1;
3204 /* Allocate a TYPE_CODE_BOOL type structure associated with GDBARCH.
3205 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
3206 the type's TYPE_UNSIGNED flag. NAME is the type name. */
3208 arch_boolean_type (struct gdbarch *gdbarch,
3209 int bit, int unsigned_p, char *name)
3213 t = arch_type (gdbarch, TYPE_CODE_BOOL, bit / TARGET_CHAR_BIT, name);
3215 TYPE_UNSIGNED (t) = 1;
3220 /* Allocate a TYPE_CODE_FLT type structure associated with GDBARCH.
3221 BIT is the type size in bits; if BIT equals -1, the size is
3222 determined by the floatformat. NAME is the type name. Set the
3223 TYPE_FLOATFORMAT from FLOATFORMATS. */
3225 arch_float_type (struct gdbarch *gdbarch,
3226 int bit, char *name, const struct floatformat **floatformats)
3232 gdb_assert (floatformats != NULL);
3233 gdb_assert (floatformats[0] != NULL && floatformats[1] != NULL);
3234 bit = floatformats[0]->totalsize;
3236 gdb_assert (bit >= 0);
3238 t = arch_type (gdbarch, TYPE_CODE_FLT, bit / TARGET_CHAR_BIT, name);
3239 TYPE_FLOATFORMAT (t) = floatformats;
3243 /* Allocate a TYPE_CODE_COMPLEX type structure associated with GDBARCH.
3244 NAME is the type name. TARGET_TYPE is the component float type. */
3246 arch_complex_type (struct gdbarch *gdbarch,
3247 char *name, struct type *target_type)
3250 t = arch_type (gdbarch, TYPE_CODE_COMPLEX,
3251 2 * TYPE_LENGTH (target_type), name);
3252 TYPE_TARGET_TYPE (t) = target_type;
3256 /* Allocate a TYPE_CODE_FLAGS type structure associated with GDBARCH.
3257 NAME is the type name. LENGTH is the size of the flag word in bytes. */
3259 arch_flags_type (struct gdbarch *gdbarch, char *name, int length)
3261 int nfields = length * TARGET_CHAR_BIT;
3264 type = arch_type (gdbarch, TYPE_CODE_FLAGS, length, name);
3265 TYPE_UNSIGNED (type) = 1;
3266 TYPE_NFIELDS (type) = nfields;
3267 TYPE_FIELDS (type) = TYPE_ZALLOC (type, nfields * sizeof (struct field));
3272 /* Add field to TYPE_CODE_FLAGS type TYPE to indicate the bit at
3273 position BITPOS is called NAME. */
3275 append_flags_type_flag (struct type *type, int bitpos, char *name)
3277 gdb_assert (TYPE_CODE (type) == TYPE_CODE_FLAGS);
3278 gdb_assert (bitpos < TYPE_NFIELDS (type));
3279 gdb_assert (bitpos >= 0);
3283 TYPE_FIELD_NAME (type, bitpos) = xstrdup (name);
3284 TYPE_FIELD_BITPOS (type, bitpos) = bitpos;
3288 /* Don't show this field to the user. */
3289 TYPE_FIELD_BITPOS (type, bitpos) = -1;
3293 /* Allocate a TYPE_CODE_STRUCT or TYPE_CODE_UNION type structure (as
3294 specified by CODE) associated with GDBARCH. NAME is the type name. */
3296 arch_composite_type (struct gdbarch *gdbarch, char *name, enum type_code code)
3299 gdb_assert (code == TYPE_CODE_STRUCT || code == TYPE_CODE_UNION);
3300 t = arch_type (gdbarch, code, 0, NULL);
3301 TYPE_TAG_NAME (t) = name;
3302 INIT_CPLUS_SPECIFIC (t);
3306 /* Add new field with name NAME and type FIELD to composite type T.
3307 ALIGNMENT (if non-zero) specifies the minimum field alignment. */
3309 append_composite_type_field_aligned (struct type *t, char *name,
3310 struct type *field, int alignment)
3313 TYPE_NFIELDS (t) = TYPE_NFIELDS (t) + 1;
3314 TYPE_FIELDS (t) = xrealloc (TYPE_FIELDS (t),
3315 sizeof (struct field) * TYPE_NFIELDS (t));
3316 f = &(TYPE_FIELDS (t)[TYPE_NFIELDS (t) - 1]);
3317 memset (f, 0, sizeof f[0]);
3318 FIELD_TYPE (f[0]) = field;
3319 FIELD_NAME (f[0]) = name;
3320 if (TYPE_CODE (t) == TYPE_CODE_UNION)
3322 if (TYPE_LENGTH (t) < TYPE_LENGTH (field))
3323 TYPE_LENGTH (t) = TYPE_LENGTH (field);
3325 else if (TYPE_CODE (t) == TYPE_CODE_STRUCT)
3327 TYPE_LENGTH (t) = TYPE_LENGTH (t) + TYPE_LENGTH (field);
3328 if (TYPE_NFIELDS (t) > 1)
3330 FIELD_BITPOS (f[0]) = (FIELD_BITPOS (f[-1])
3331 + (TYPE_LENGTH (FIELD_TYPE (f[-1]))
3332 * TARGET_CHAR_BIT));
3336 int left = FIELD_BITPOS (f[0]) % (alignment * TARGET_CHAR_BIT);
3339 FIELD_BITPOS (f[0]) += left;
3340 TYPE_LENGTH (t) += left / TARGET_CHAR_BIT;
3347 /* Add new field with name NAME and type FIELD to composite type T. */
3349 append_composite_type_field (struct type *t, char *name,
3352 append_composite_type_field_aligned (t, name, field, 0);
3356 static struct gdbarch_data *gdbtypes_data;
3358 const struct builtin_type *
3359 builtin_type (struct gdbarch *gdbarch)
3361 return gdbarch_data (gdbarch, gdbtypes_data);
3365 gdbtypes_post_init (struct gdbarch *gdbarch)
3367 struct builtin_type *builtin_type
3368 = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct builtin_type);
3371 builtin_type->builtin_void
3372 = arch_type (gdbarch, TYPE_CODE_VOID, 1, "void");
3373 builtin_type->builtin_char
3374 = arch_integer_type (gdbarch, TARGET_CHAR_BIT,
3375 !gdbarch_char_signed (gdbarch), "char");
3376 builtin_type->builtin_signed_char
3377 = arch_integer_type (gdbarch, TARGET_CHAR_BIT,
3379 builtin_type->builtin_unsigned_char
3380 = arch_integer_type (gdbarch, TARGET_CHAR_BIT,
3381 1, "unsigned char");
3382 builtin_type->builtin_short
3383 = arch_integer_type (gdbarch, gdbarch_short_bit (gdbarch),
3385 builtin_type->builtin_unsigned_short
3386 = arch_integer_type (gdbarch, gdbarch_short_bit (gdbarch),
3387 1, "unsigned short");
3388 builtin_type->builtin_int
3389 = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch),
3391 builtin_type->builtin_unsigned_int
3392 = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch),
3394 builtin_type->builtin_long
3395 = arch_integer_type (gdbarch, gdbarch_long_bit (gdbarch),
3397 builtin_type->builtin_unsigned_long
3398 = arch_integer_type (gdbarch, gdbarch_long_bit (gdbarch),
3399 1, "unsigned long");
3400 builtin_type->builtin_long_long
3401 = arch_integer_type (gdbarch, gdbarch_long_long_bit (gdbarch),
3403 builtin_type->builtin_unsigned_long_long
3404 = arch_integer_type (gdbarch, gdbarch_long_long_bit (gdbarch),
3405 1, "unsigned long long");
3406 builtin_type->builtin_float
3407 = arch_float_type (gdbarch, gdbarch_float_bit (gdbarch),
3408 "float", gdbarch_float_format (gdbarch));
3409 builtin_type->builtin_double
3410 = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch),
3411 "double", gdbarch_double_format (gdbarch));
3412 builtin_type->builtin_long_double
3413 = arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch),
3414 "long double", gdbarch_long_double_format (gdbarch));
3415 builtin_type->builtin_complex
3416 = arch_complex_type (gdbarch, "complex",
3417 builtin_type->builtin_float);
3418 builtin_type->builtin_double_complex
3419 = arch_complex_type (gdbarch, "double complex",
3420 builtin_type->builtin_double);
3421 builtin_type->builtin_string
3422 = arch_type (gdbarch, TYPE_CODE_STRING, 1, "string");
3423 builtin_type->builtin_bool
3424 = arch_type (gdbarch, TYPE_CODE_BOOL, 1, "bool");
3426 /* The following three are about decimal floating point types, which
3427 are 32-bits, 64-bits and 128-bits respectively. */
3428 builtin_type->builtin_decfloat
3429 = arch_type (gdbarch, TYPE_CODE_DECFLOAT, 32 / 8, "_Decimal32");
3430 builtin_type->builtin_decdouble
3431 = arch_type (gdbarch, TYPE_CODE_DECFLOAT, 64 / 8, "_Decimal64");
3432 builtin_type->builtin_declong
3433 = arch_type (gdbarch, TYPE_CODE_DECFLOAT, 128 / 8, "_Decimal128");
3435 /* "True" character types. */
3436 builtin_type->builtin_true_char
3437 = arch_character_type (gdbarch, TARGET_CHAR_BIT, 0, "true character");
3438 builtin_type->builtin_true_unsigned_char
3439 = arch_character_type (gdbarch, TARGET_CHAR_BIT, 1, "true character");
3441 /* Fixed-size integer types. */
3442 builtin_type->builtin_int0
3443 = arch_integer_type (gdbarch, 0, 0, "int0_t");
3444 builtin_type->builtin_int8
3445 = arch_integer_type (gdbarch, 8, 0, "int8_t");
3446 builtin_type->builtin_uint8
3447 = arch_integer_type (gdbarch, 8, 1, "uint8_t");
3448 builtin_type->builtin_int16
3449 = arch_integer_type (gdbarch, 16, 0, "int16_t");
3450 builtin_type->builtin_uint16
3451 = arch_integer_type (gdbarch, 16, 1, "uint16_t");
3452 builtin_type->builtin_int32
3453 = arch_integer_type (gdbarch, 32, 0, "int32_t");
3454 builtin_type->builtin_uint32
3455 = arch_integer_type (gdbarch, 32, 1, "uint32_t");
3456 builtin_type->builtin_int64
3457 = arch_integer_type (gdbarch, 64, 0, "int64_t");
3458 builtin_type->builtin_uint64
3459 = arch_integer_type (gdbarch, 64, 1, "uint64_t");
3460 builtin_type->builtin_int128
3461 = arch_integer_type (gdbarch, 128, 0, "int128_t");
3462 builtin_type->builtin_uint128
3463 = arch_integer_type (gdbarch, 128, 1, "uint128_t");
3464 TYPE_NOTTEXT (builtin_type->builtin_int8) = 1;
3465 TYPE_NOTTEXT (builtin_type->builtin_uint8) = 1;
3467 /* Default data/code pointer types. */
3468 builtin_type->builtin_data_ptr
3469 = lookup_pointer_type (builtin_type->builtin_void);
3470 builtin_type->builtin_func_ptr
3471 = lookup_pointer_type (lookup_function_type (builtin_type->builtin_void));
3473 /* This type represents a GDB internal function. */
3474 builtin_type->internal_fn
3475 = arch_type (gdbarch, TYPE_CODE_INTERNAL_FUNCTION, 0,
3476 "<internal function>");
3478 return builtin_type;
3482 /* This set of objfile-based types is intended to be used by symbol
3483 readers as basic types. */
3485 static const struct objfile_data *objfile_type_data;
3487 const struct objfile_type *
3488 objfile_type (struct objfile *objfile)
3490 struct gdbarch *gdbarch;
3491 struct objfile_type *objfile_type
3492 = objfile_data (objfile, objfile_type_data);
3495 return objfile_type;
3497 objfile_type = OBSTACK_CALLOC (&objfile->objfile_obstack,
3498 1, struct objfile_type);
3500 /* Use the objfile architecture to determine basic type properties. */
3501 gdbarch = get_objfile_arch (objfile);
3504 objfile_type->builtin_void
3505 = init_type (TYPE_CODE_VOID, 1,
3509 objfile_type->builtin_char
3510 = init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
3512 | (gdbarch_char_signed (gdbarch) ? 0 : TYPE_FLAG_UNSIGNED)),
3514 objfile_type->builtin_signed_char
3515 = init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
3517 "signed char", objfile);
3518 objfile_type->builtin_unsigned_char
3519 = init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
3521 "unsigned char", objfile);
3522 objfile_type->builtin_short
3523 = init_type (TYPE_CODE_INT,
3524 gdbarch_short_bit (gdbarch) / TARGET_CHAR_BIT,
3525 0, "short", objfile);
3526 objfile_type->builtin_unsigned_short
3527 = init_type (TYPE_CODE_INT,
3528 gdbarch_short_bit (gdbarch) / TARGET_CHAR_BIT,
3529 TYPE_FLAG_UNSIGNED, "unsigned short", objfile);
3530 objfile_type->builtin_int
3531 = init_type (TYPE_CODE_INT,
3532 gdbarch_int_bit (gdbarch) / TARGET_CHAR_BIT,
3534 objfile_type->builtin_unsigned_int
3535 = init_type (TYPE_CODE_INT,
3536 gdbarch_int_bit (gdbarch) / TARGET_CHAR_BIT,
3537 TYPE_FLAG_UNSIGNED, "unsigned int", objfile);
3538 objfile_type->builtin_long
3539 = init_type (TYPE_CODE_INT,
3540 gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT,
3541 0, "long", objfile);
3542 objfile_type->builtin_unsigned_long
3543 = init_type (TYPE_CODE_INT,
3544 gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT,
3545 TYPE_FLAG_UNSIGNED, "unsigned long", objfile);
3546 objfile_type->builtin_long_long
3547 = init_type (TYPE_CODE_INT,
3548 gdbarch_long_long_bit (gdbarch) / TARGET_CHAR_BIT,
3549 0, "long long", objfile);
3550 objfile_type->builtin_unsigned_long_long
3551 = init_type (TYPE_CODE_INT,
3552 gdbarch_long_long_bit (gdbarch) / TARGET_CHAR_BIT,
3553 TYPE_FLAG_UNSIGNED, "unsigned long long", objfile);
3555 objfile_type->builtin_float
3556 = init_type (TYPE_CODE_FLT,
3557 gdbarch_float_bit (gdbarch) / TARGET_CHAR_BIT,
3558 0, "float", objfile);
3559 TYPE_FLOATFORMAT (objfile_type->builtin_float)
3560 = gdbarch_float_format (gdbarch);
3561 objfile_type->builtin_double
3562 = init_type (TYPE_CODE_FLT,
3563 gdbarch_double_bit (gdbarch) / TARGET_CHAR_BIT,
3564 0, "double", objfile);
3565 TYPE_FLOATFORMAT (objfile_type->builtin_double)
3566 = gdbarch_double_format (gdbarch);
3567 objfile_type->builtin_long_double
3568 = init_type (TYPE_CODE_FLT,
3569 gdbarch_long_double_bit (gdbarch) / TARGET_CHAR_BIT,
3570 0, "long double", objfile);
3571 TYPE_FLOATFORMAT (objfile_type->builtin_long_double)
3572 = gdbarch_long_double_format (gdbarch);
3574 /* This type represents a type that was unrecognized in symbol read-in. */
3575 objfile_type->builtin_error
3576 = init_type (TYPE_CODE_ERROR, 0, 0, "<unknown type>", objfile);
3578 /* The following set of types is used for symbols with no
3579 debug information. */
3580 objfile_type->nodebug_text_symbol
3581 = init_type (TYPE_CODE_FUNC, 1, 0,
3582 "<text variable, no debug info>", objfile);
3583 TYPE_TARGET_TYPE (objfile_type->nodebug_text_symbol)
3584 = objfile_type->builtin_int;
3585 objfile_type->nodebug_data_symbol
3586 = init_type (TYPE_CODE_INT,
3587 gdbarch_int_bit (gdbarch) / HOST_CHAR_BIT, 0,
3588 "<data variable, no debug info>", objfile);
3589 objfile_type->nodebug_unknown_symbol
3590 = init_type (TYPE_CODE_INT, 1, 0,
3591 "<variable (not text or data), no debug info>", objfile);
3592 objfile_type->nodebug_tls_symbol
3593 = init_type (TYPE_CODE_INT,
3594 gdbarch_int_bit (gdbarch) / HOST_CHAR_BIT, 0,
3595 "<thread local variable, no debug info>", objfile);
3597 /* NOTE: on some targets, addresses and pointers are not necessarily
3598 the same --- for example, on the D10V, pointers are 16 bits long,
3599 but addresses are 32 bits long. See doc/gdbint.texinfo,
3600 ``Pointers Are Not Always Addresses''.
3603 - gdb's `struct type' always describes the target's
3605 - gdb's `struct value' objects should always hold values in
3607 - gdb's CORE_ADDR values are addresses in the unified virtual
3608 address space that the assembler and linker work with. Thus,
3609 since target_read_memory takes a CORE_ADDR as an argument, it
3610 can access any memory on the target, even if the processor has
3611 separate code and data address spaces.
3614 - If v is a value holding a D10V code pointer, its contents are
3615 in target form: a big-endian address left-shifted two bits.
3616 - If p is a D10V pointer type, TYPE_LENGTH (p) == 2, just as
3617 sizeof (void *) == 2 on the target.
3619 In this context, objfile_type->builtin_core_addr is a bit odd:
3620 it's a target type for a value the target will never see. It's
3621 only used to hold the values of (typeless) linker symbols, which
3622 are indeed in the unified virtual address space. */
3624 objfile_type->builtin_core_addr
3625 = init_type (TYPE_CODE_INT,
3626 gdbarch_addr_bit (gdbarch) / 8,
3627 TYPE_FLAG_UNSIGNED, "__CORE_ADDR", objfile);
3629 set_objfile_data (objfile, objfile_type_data, objfile_type);
3630 return objfile_type;
3634 extern void _initialize_gdbtypes (void);
3636 _initialize_gdbtypes (void)
3638 gdbtypes_data = gdbarch_data_register_post_init (gdbtypes_post_init);
3639 objfile_type_data = register_objfile_data ();
3641 add_setshow_zinteger_cmd ("overload", no_class, &overload_debug, _("\
3642 Set debugging of C++ overloading."), _("\
3643 Show debugging of C++ overloading."), _("\
3644 When enabled, ranking of the functions is displayed."),
3646 show_overload_debug,
3647 &setdebuglist, &showdebuglist);
3649 /* Add user knob for controlling resolution of opaque types. */
3650 add_setshow_boolean_cmd ("opaque-type-resolution", class_support,
3651 &opaque_type_resolution, _("\
3652 Set resolution of opaque struct/class/union types (if set before loading symbols)."), _("\
3653 Show resolution of opaque struct/class/union types (if set before loading symbols)."), NULL,
3655 show_opaque_type_resolution,
3656 &setlist, &showlist);