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 Free Software Foundation, Inc.
6 Contributed by Cygnus Support, using pieces from other GDB modules.
8 This file is part of GDB.
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 3 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program. If not, see <http://www.gnu.org/licenses/>. */
24 #include "gdb_string.h"
30 #include "expression.h"
35 #include "complaints.h"
39 #include "gdb_assert.h"
43 /* Floatformat pairs. */
44 const struct floatformat *floatformats_ieee_single[BFD_ENDIAN_UNKNOWN] = {
45 &floatformat_ieee_single_big,
46 &floatformat_ieee_single_little
48 const struct floatformat *floatformats_ieee_double[BFD_ENDIAN_UNKNOWN] = {
49 &floatformat_ieee_double_big,
50 &floatformat_ieee_double_little
52 const struct floatformat *floatformats_ieee_double_littlebyte_bigword[BFD_ENDIAN_UNKNOWN] = {
53 &floatformat_ieee_double_big,
54 &floatformat_ieee_double_littlebyte_bigword
56 const struct floatformat *floatformats_i387_ext[BFD_ENDIAN_UNKNOWN] = {
57 &floatformat_i387_ext,
60 const struct floatformat *floatformats_m68881_ext[BFD_ENDIAN_UNKNOWN] = {
61 &floatformat_m68881_ext,
62 &floatformat_m68881_ext
64 const struct floatformat *floatformats_arm_ext[BFD_ENDIAN_UNKNOWN] = {
65 &floatformat_arm_ext_big,
66 &floatformat_arm_ext_littlebyte_bigword
68 const struct floatformat *floatformats_ia64_spill[BFD_ENDIAN_UNKNOWN] = {
69 &floatformat_ia64_spill_big,
70 &floatformat_ia64_spill_little
72 const struct floatformat *floatformats_ia64_quad[BFD_ENDIAN_UNKNOWN] = {
73 &floatformat_ia64_quad_big,
74 &floatformat_ia64_quad_little
76 const struct floatformat *floatformats_vax_f[BFD_ENDIAN_UNKNOWN] = {
80 const struct floatformat *floatformats_vax_d[BFD_ENDIAN_UNKNOWN] = {
84 const struct floatformat *floatformats_ibm_long_double[BFD_ENDIAN_UNKNOWN] = {
85 &floatformat_ibm_long_double,
86 &floatformat_ibm_long_double
90 int opaque_type_resolution = 1;
92 show_opaque_type_resolution (struct ui_file *file, int from_tty,
93 struct cmd_list_element *c,
96 fprintf_filtered (file, _("\
97 Resolution of opaque struct/class/union types (if set before loading symbols) is %s.\n"),
101 int overload_debug = 0;
103 show_overload_debug (struct ui_file *file, int from_tty,
104 struct cmd_list_element *c, const char *value)
106 fprintf_filtered (file, _("Debugging of C++ overloading is %s.\n"),
114 }; /* Maximum extension is 128! FIXME */
116 static void print_bit_vector (B_TYPE *, int);
117 static void print_arg_types (struct field *, int, int);
118 static void dump_fn_fieldlists (struct type *, int);
119 static void print_cplus_stuff (struct type *, int);
122 /* Allocate a new OBJFILE-associated type structure and fill it
123 with some defaults. Space for the type structure is allocated
124 on the objfile's objfile_obstack. */
127 alloc_type (struct objfile *objfile)
131 gdb_assert (objfile != NULL);
133 /* Alloc the structure and start off with all fields zeroed. */
134 type = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct type);
135 TYPE_MAIN_TYPE (type) = OBSTACK_ZALLOC (&objfile->objfile_obstack,
137 OBJSTAT (objfile, n_types++);
139 TYPE_OBJFILE_OWNED (type) = 1;
140 TYPE_OWNER (type).objfile = objfile;
142 /* Initialize the fields that might not be zero. */
144 TYPE_CODE (type) = TYPE_CODE_UNDEF;
145 TYPE_VPTR_FIELDNO (type) = -1;
146 TYPE_CHAIN (type) = type; /* Chain back to itself. */
151 /* Allocate a new GDBARCH-associated type structure and fill it
152 with some defaults. Space for the type structure is allocated
156 alloc_type_arch (struct gdbarch *gdbarch)
160 gdb_assert (gdbarch != NULL);
162 /* Alloc the structure and start off with all fields zeroed. */
164 type = XZALLOC (struct type);
165 TYPE_MAIN_TYPE (type) = XZALLOC (struct main_type);
167 TYPE_OBJFILE_OWNED (type) = 0;
168 TYPE_OWNER (type).gdbarch = gdbarch;
170 /* Initialize the fields that might not be zero. */
172 TYPE_CODE (type) = TYPE_CODE_UNDEF;
173 TYPE_VPTR_FIELDNO (type) = -1;
174 TYPE_CHAIN (type) = type; /* Chain back to itself. */
179 /* If TYPE is objfile-associated, allocate a new type structure
180 associated with the same objfile. If TYPE is gdbarch-associated,
181 allocate a new type structure associated with the same gdbarch. */
184 alloc_type_copy (const struct type *type)
186 if (TYPE_OBJFILE_OWNED (type))
187 return alloc_type (TYPE_OWNER (type).objfile);
189 return alloc_type_arch (TYPE_OWNER (type).gdbarch);
192 /* If TYPE is gdbarch-associated, return that architecture.
193 If TYPE is objfile-associated, return that objfile's architecture. */
196 get_type_arch (const struct type *type)
198 if (TYPE_OBJFILE_OWNED (type))
199 return get_objfile_arch (TYPE_OWNER (type).objfile);
201 return TYPE_OWNER (type).gdbarch;
205 /* Alloc a new type instance structure, fill it with some defaults,
206 and point it at OLDTYPE. Allocate the new type instance from the
207 same place as OLDTYPE. */
210 alloc_type_instance (struct type *oldtype)
214 /* Allocate the structure. */
216 if (! TYPE_OBJFILE_OWNED (oldtype))
217 type = XZALLOC (struct type);
219 type = OBSTACK_ZALLOC (&TYPE_OBJFILE (oldtype)->objfile_obstack,
222 TYPE_MAIN_TYPE (type) = TYPE_MAIN_TYPE (oldtype);
224 TYPE_CHAIN (type) = type; /* Chain back to itself for now. */
229 /* Clear all remnants of the previous type at TYPE, in preparation for
230 replacing it with something else. Preserve owner information. */
232 smash_type (struct type *type)
234 int objfile_owned = TYPE_OBJFILE_OWNED (type);
235 union type_owner owner = TYPE_OWNER (type);
237 memset (TYPE_MAIN_TYPE (type), 0, sizeof (struct main_type));
239 /* Restore owner information. */
240 TYPE_OBJFILE_OWNED (type) = objfile_owned;
241 TYPE_OWNER (type) = owner;
243 /* For now, delete the rings. */
244 TYPE_CHAIN (type) = type;
246 /* For now, leave the pointer/reference types alone. */
249 /* Lookup a pointer to a type TYPE. TYPEPTR, if nonzero, points
250 to a pointer to memory where the pointer type should be stored.
251 If *TYPEPTR is zero, update it to point to the pointer type we return.
252 We allocate new memory if needed. */
255 make_pointer_type (struct type *type, struct type **typeptr)
257 struct type *ntype; /* New type */
260 ntype = TYPE_POINTER_TYPE (type);
265 return ntype; /* Don't care about alloc,
266 and have new type. */
267 else if (*typeptr == 0)
269 *typeptr = ntype; /* Tracking alloc, and have new type. */
274 if (typeptr == 0 || *typeptr == 0) /* We'll need to allocate one. */
276 ntype = alloc_type_copy (type);
280 else /* We have storage, but need to reset it. */
283 chain = TYPE_CHAIN (ntype);
285 TYPE_CHAIN (ntype) = chain;
288 TYPE_TARGET_TYPE (ntype) = type;
289 TYPE_POINTER_TYPE (type) = ntype;
291 /* FIXME! Assume the machine has only one representation for
295 = gdbarch_ptr_bit (get_type_arch (type)) / TARGET_CHAR_BIT;
296 TYPE_CODE (ntype) = TYPE_CODE_PTR;
298 /* Mark pointers as unsigned. The target converts between pointers
299 and addresses (CORE_ADDRs) using gdbarch_pointer_to_address and
300 gdbarch_address_to_pointer. */
301 TYPE_UNSIGNED (ntype) = 1;
303 if (!TYPE_POINTER_TYPE (type)) /* Remember it, if don't have one. */
304 TYPE_POINTER_TYPE (type) = ntype;
306 /* Update the length of all the other variants of this type. */
307 chain = TYPE_CHAIN (ntype);
308 while (chain != ntype)
310 TYPE_LENGTH (chain) = TYPE_LENGTH (ntype);
311 chain = TYPE_CHAIN (chain);
317 /* Given a type TYPE, return a type of pointers to that type.
318 May need to construct such a type if this is the first use. */
321 lookup_pointer_type (struct type *type)
323 return make_pointer_type (type, (struct type **) 0);
326 /* Lookup a C++ `reference' to a type TYPE. TYPEPTR, if nonzero,
327 points to a pointer to memory where the reference type should be
328 stored. If *TYPEPTR is zero, update it to point to the reference
329 type we return. We allocate new memory if needed. */
332 make_reference_type (struct type *type, struct type **typeptr)
334 struct type *ntype; /* New type */
337 ntype = TYPE_REFERENCE_TYPE (type);
342 return ntype; /* Don't care about alloc,
343 and have new type. */
344 else if (*typeptr == 0)
346 *typeptr = ntype; /* Tracking alloc, and have new type. */
351 if (typeptr == 0 || *typeptr == 0) /* We'll need to allocate one. */
353 ntype = alloc_type_copy (type);
357 else /* We have storage, but need to reset it. */
360 chain = TYPE_CHAIN (ntype);
362 TYPE_CHAIN (ntype) = chain;
365 TYPE_TARGET_TYPE (ntype) = type;
366 TYPE_REFERENCE_TYPE (type) = ntype;
368 /* FIXME! Assume the machine has only one representation for
369 references, and that it matches the (only) representation for
372 TYPE_LENGTH (ntype) =
373 gdbarch_ptr_bit (get_type_arch (type)) / TARGET_CHAR_BIT;
374 TYPE_CODE (ntype) = TYPE_CODE_REF;
376 if (!TYPE_REFERENCE_TYPE (type)) /* Remember it, if don't have one. */
377 TYPE_REFERENCE_TYPE (type) = ntype;
379 /* Update the length of all the other variants of this type. */
380 chain = TYPE_CHAIN (ntype);
381 while (chain != ntype)
383 TYPE_LENGTH (chain) = TYPE_LENGTH (ntype);
384 chain = TYPE_CHAIN (chain);
390 /* Same as above, but caller doesn't care about memory allocation
394 lookup_reference_type (struct type *type)
396 return make_reference_type (type, (struct type **) 0);
399 /* Lookup a function type that returns type TYPE. TYPEPTR, if
400 nonzero, points to a pointer to memory where the function type
401 should be stored. If *TYPEPTR is zero, update it to point to the
402 function type we return. We allocate new memory if needed. */
405 make_function_type (struct type *type, struct type **typeptr)
407 struct type *ntype; /* New type */
409 if (typeptr == 0 || *typeptr == 0) /* We'll need to allocate one. */
411 ntype = alloc_type_copy (type);
415 else /* We have storage, but need to reset it. */
421 TYPE_TARGET_TYPE (ntype) = type;
423 TYPE_LENGTH (ntype) = 1;
424 TYPE_CODE (ntype) = TYPE_CODE_FUNC;
430 /* Given a type TYPE, return a type of functions that return that type.
431 May need to construct such a type if this is the first use. */
434 lookup_function_type (struct type *type)
436 return make_function_type (type, (struct type **) 0);
439 /* Identify address space identifier by name --
440 return the integer flag defined in gdbtypes.h. */
442 address_space_name_to_int (struct gdbarch *gdbarch, char *space_identifier)
445 /* Check for known address space delimiters. */
446 if (!strcmp (space_identifier, "code"))
447 return TYPE_INSTANCE_FLAG_CODE_SPACE;
448 else if (!strcmp (space_identifier, "data"))
449 return TYPE_INSTANCE_FLAG_DATA_SPACE;
450 else if (gdbarch_address_class_name_to_type_flags_p (gdbarch)
451 && gdbarch_address_class_name_to_type_flags (gdbarch,
456 error (_("Unknown address space specifier: \"%s\""), space_identifier);
459 /* Identify address space identifier by integer flag as defined in
460 gdbtypes.h -- return the string version of the adress space name. */
463 address_space_int_to_name (struct gdbarch *gdbarch, int space_flag)
465 if (space_flag & TYPE_INSTANCE_FLAG_CODE_SPACE)
467 else if (space_flag & TYPE_INSTANCE_FLAG_DATA_SPACE)
469 else if ((space_flag & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL)
470 && gdbarch_address_class_type_flags_to_name_p (gdbarch))
471 return gdbarch_address_class_type_flags_to_name (gdbarch, space_flag);
476 /* Create a new type with instance flags NEW_FLAGS, based on TYPE.
478 If STORAGE is non-NULL, create the new type instance there.
479 STORAGE must be in the same obstack as TYPE. */
482 make_qualified_type (struct type *type, int new_flags,
483 struct type *storage)
490 if (TYPE_INSTANCE_FLAGS (ntype) == new_flags)
492 ntype = TYPE_CHAIN (ntype);
494 while (ntype != type);
496 /* Create a new type instance. */
498 ntype = alloc_type_instance (type);
501 /* If STORAGE was provided, it had better be in the same objfile
502 as TYPE. Otherwise, we can't link it into TYPE's cv chain:
503 if one objfile is freed and the other kept, we'd have
504 dangling pointers. */
505 gdb_assert (TYPE_OBJFILE (type) == TYPE_OBJFILE (storage));
508 TYPE_MAIN_TYPE (ntype) = TYPE_MAIN_TYPE (type);
509 TYPE_CHAIN (ntype) = ntype;
512 /* Pointers or references to the original type are not relevant to
514 TYPE_POINTER_TYPE (ntype) = (struct type *) 0;
515 TYPE_REFERENCE_TYPE (ntype) = (struct type *) 0;
517 /* Chain the new qualified type to the old type. */
518 TYPE_CHAIN (ntype) = TYPE_CHAIN (type);
519 TYPE_CHAIN (type) = ntype;
521 /* Now set the instance flags and return the new type. */
522 TYPE_INSTANCE_FLAGS (ntype) = new_flags;
524 /* Set length of new type to that of the original type. */
525 TYPE_LENGTH (ntype) = TYPE_LENGTH (type);
530 /* Make an address-space-delimited variant of a type -- a type that
531 is identical to the one supplied except that it has an address
532 space attribute attached to it (such as "code" or "data").
534 The space attributes "code" and "data" are for Harvard
535 architectures. The address space attributes are for architectures
536 which have alternately sized pointers or pointers with alternate
540 make_type_with_address_space (struct type *type, int space_flag)
543 int new_flags = ((TYPE_INSTANCE_FLAGS (type)
544 & ~(TYPE_INSTANCE_FLAG_CODE_SPACE
545 | TYPE_INSTANCE_FLAG_DATA_SPACE
546 | TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL))
549 return make_qualified_type (type, new_flags, NULL);
552 /* Make a "c-v" variant of a type -- a type that is identical to the
553 one supplied except that it may have const or volatile attributes
554 CNST is a flag for setting the const attribute
555 VOLTL is a flag for setting the volatile attribute
556 TYPE is the base type whose variant we are creating.
558 If TYPEPTR and *TYPEPTR are non-zero, then *TYPEPTR points to
559 storage to hold the new qualified type; *TYPEPTR and TYPE must be
560 in the same objfile. Otherwise, allocate fresh memory for the new
561 type whereever TYPE lives. If TYPEPTR is non-zero, set it to the
562 new type we construct. */
564 make_cv_type (int cnst, int voltl,
566 struct type **typeptr)
568 struct type *ntype; /* New type */
569 struct type *tmp_type = type; /* tmp type */
570 struct objfile *objfile;
572 int new_flags = (TYPE_INSTANCE_FLAGS (type)
573 & ~(TYPE_INSTANCE_FLAG_CONST | TYPE_INSTANCE_FLAG_VOLATILE));
576 new_flags |= TYPE_INSTANCE_FLAG_CONST;
579 new_flags |= TYPE_INSTANCE_FLAG_VOLATILE;
581 if (typeptr && *typeptr != NULL)
583 /* TYPE and *TYPEPTR must be in the same objfile. We can't have
584 a C-V variant chain that threads across objfiles: if one
585 objfile gets freed, then the other has a broken C-V chain.
587 This code used to try to copy over the main type from TYPE to
588 *TYPEPTR if they were in different objfiles, but that's
589 wrong, too: TYPE may have a field list or member function
590 lists, which refer to types of their own, etc. etc. The
591 whole shebang would need to be copied over recursively; you
592 can't have inter-objfile pointers. The only thing to do is
593 to leave stub types as stub types, and look them up afresh by
594 name each time you encounter them. */
595 gdb_assert (TYPE_OBJFILE (*typeptr) == TYPE_OBJFILE (type));
598 ntype = make_qualified_type (type, new_flags,
599 typeptr ? *typeptr : NULL);
607 /* Replace the contents of ntype with the type *type. This changes the
608 contents, rather than the pointer for TYPE_MAIN_TYPE (ntype); thus
609 the changes are propogated to all types in the TYPE_CHAIN.
611 In order to build recursive types, it's inevitable that we'll need
612 to update types in place --- but this sort of indiscriminate
613 smashing is ugly, and needs to be replaced with something more
614 controlled. TYPE_MAIN_TYPE is a step in this direction; it's not
615 clear if more steps are needed. */
617 replace_type (struct type *ntype, struct type *type)
621 /* These two types had better be in the same objfile. Otherwise,
622 the assignment of one type's main type structure to the other
623 will produce a type with references to objects (names; field
624 lists; etc.) allocated on an objfile other than its own. */
625 gdb_assert (TYPE_OBJFILE (ntype) == TYPE_OBJFILE (ntype));
627 *TYPE_MAIN_TYPE (ntype) = *TYPE_MAIN_TYPE (type);
629 /* The type length is not a part of the main type. Update it for
630 each type on the variant chain. */
634 /* Assert that this element of the chain has no address-class bits
635 set in its flags. Such type variants might have type lengths
636 which are supposed to be different from the non-address-class
637 variants. This assertion shouldn't ever be triggered because
638 symbol readers which do construct address-class variants don't
639 call replace_type(). */
640 gdb_assert (TYPE_ADDRESS_CLASS_ALL (chain) == 0);
642 TYPE_LENGTH (chain) = TYPE_LENGTH (type);
643 chain = TYPE_CHAIN (chain);
645 while (ntype != chain);
647 /* Assert that the two types have equivalent instance qualifiers.
648 This should be true for at least all of our debug readers. */
649 gdb_assert (TYPE_INSTANCE_FLAGS (ntype) == TYPE_INSTANCE_FLAGS (type));
652 /* Implement direct support for MEMBER_TYPE in GNU C++.
653 May need to construct such a type if this is the first use.
654 The TYPE is the type of the member. The DOMAIN is the type
655 of the aggregate that the member belongs to. */
658 lookup_memberptr_type (struct type *type, struct type *domain)
662 mtype = alloc_type_copy (type);
663 smash_to_memberptr_type (mtype, domain, type);
667 /* Return a pointer-to-method type, for a method of type TO_TYPE. */
670 lookup_methodptr_type (struct type *to_type)
674 mtype = alloc_type_copy (to_type);
675 TYPE_TARGET_TYPE (mtype) = to_type;
676 TYPE_DOMAIN_TYPE (mtype) = TYPE_DOMAIN_TYPE (to_type);
677 TYPE_LENGTH (mtype) = cplus_method_ptr_size (to_type);
678 TYPE_CODE (mtype) = TYPE_CODE_METHODPTR;
682 /* Allocate a stub method whose return type is TYPE. This apparently
683 happens for speed of symbol reading, since parsing out the
684 arguments to the method is cpu-intensive, the way we are doing it.
685 So, we will fill in arguments later. This always returns a fresh
689 allocate_stub_method (struct type *type)
693 mtype = alloc_type_copy (type);
694 TYPE_CODE (mtype) = TYPE_CODE_METHOD;
695 TYPE_LENGTH (mtype) = 1;
696 TYPE_STUB (mtype) = 1;
697 TYPE_TARGET_TYPE (mtype) = type;
698 /* _DOMAIN_TYPE (mtype) = unknown yet */
702 /* Create a range type using either a blank type supplied in
703 RESULT_TYPE, or creating a new type, inheriting the objfile from
706 Indices will be of type INDEX_TYPE, and will range from LOW_BOUND
707 to HIGH_BOUND, inclusive.
709 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
710 sure it is TYPE_CODE_UNDEF before we bash it into a range type? */
713 create_range_type (struct type *result_type, struct type *index_type,
714 int low_bound, int high_bound)
716 if (result_type == NULL)
717 result_type = alloc_type_copy (index_type);
718 TYPE_CODE (result_type) = TYPE_CODE_RANGE;
719 TYPE_TARGET_TYPE (result_type) = index_type;
720 if (TYPE_STUB (index_type))
721 TYPE_TARGET_STUB (result_type) = 1;
723 TYPE_LENGTH (result_type) = TYPE_LENGTH (check_typedef (index_type));
724 TYPE_NFIELDS (result_type) = 2;
725 TYPE_FIELDS (result_type) = TYPE_ZALLOC (result_type,
726 TYPE_NFIELDS (result_type)
727 * sizeof (struct field));
728 TYPE_LOW_BOUND (result_type) = low_bound;
729 TYPE_HIGH_BOUND (result_type) = high_bound;
732 TYPE_UNSIGNED (result_type) = 1;
737 /* Set *LOWP and *HIGHP to the lower and upper bounds of discrete type
738 TYPE. Return 1 if type is a range type, 0 if it is discrete (and
739 bounds will fit in LONGEST), or -1 otherwise. */
742 get_discrete_bounds (struct type *type, LONGEST *lowp, LONGEST *highp)
744 CHECK_TYPEDEF (type);
745 switch (TYPE_CODE (type))
747 case TYPE_CODE_RANGE:
748 *lowp = TYPE_LOW_BOUND (type);
749 *highp = TYPE_HIGH_BOUND (type);
752 if (TYPE_NFIELDS (type) > 0)
754 /* The enums may not be sorted by value, so search all
758 *lowp = *highp = TYPE_FIELD_BITPOS (type, 0);
759 for (i = 0; i < TYPE_NFIELDS (type); i++)
761 if (TYPE_FIELD_BITPOS (type, i) < *lowp)
762 *lowp = TYPE_FIELD_BITPOS (type, i);
763 if (TYPE_FIELD_BITPOS (type, i) > *highp)
764 *highp = TYPE_FIELD_BITPOS (type, i);
767 /* Set unsigned indicator if warranted. */
770 TYPE_UNSIGNED (type) = 1;
784 if (TYPE_LENGTH (type) > sizeof (LONGEST)) /* Too big */
786 if (!TYPE_UNSIGNED (type))
788 *lowp = -(1 << (TYPE_LENGTH (type) * TARGET_CHAR_BIT - 1));
792 /* ... fall through for unsigned ints ... */
795 /* This round-about calculation is to avoid shifting by
796 TYPE_LENGTH (type) * TARGET_CHAR_BIT, which will not work
797 if TYPE_LENGTH (type) == sizeof (LONGEST). */
798 *highp = 1 << (TYPE_LENGTH (type) * TARGET_CHAR_BIT - 1);
799 *highp = (*highp - 1) | *highp;
806 /* Create an array type using either a blank type supplied in
807 RESULT_TYPE, or creating a new type, inheriting the objfile from
810 Elements will be of type ELEMENT_TYPE, the indices will be of type
813 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
814 sure it is TYPE_CODE_UNDEF before we bash it into an array
818 create_array_type (struct type *result_type,
819 struct type *element_type,
820 struct type *range_type)
822 LONGEST low_bound, high_bound;
824 if (result_type == NULL)
825 result_type = alloc_type_copy (range_type);
827 TYPE_CODE (result_type) = TYPE_CODE_ARRAY;
828 TYPE_TARGET_TYPE (result_type) = element_type;
829 if (get_discrete_bounds (range_type, &low_bound, &high_bound) < 0)
830 low_bound = high_bound = 0;
831 CHECK_TYPEDEF (element_type);
832 /* Be careful when setting the array length. Ada arrays can be
833 empty arrays with the high_bound being smaller than the low_bound.
834 In such cases, the array length should be zero. */
835 if (high_bound < low_bound)
836 TYPE_LENGTH (result_type) = 0;
838 TYPE_LENGTH (result_type) =
839 TYPE_LENGTH (element_type) * (high_bound - low_bound + 1);
840 TYPE_NFIELDS (result_type) = 1;
841 TYPE_FIELDS (result_type) =
842 (struct field *) TYPE_ZALLOC (result_type, sizeof (struct field));
843 TYPE_INDEX_TYPE (result_type) = range_type;
844 TYPE_VPTR_FIELDNO (result_type) = -1;
846 /* TYPE_FLAG_TARGET_STUB will take care of zero length arrays */
847 if (TYPE_LENGTH (result_type) == 0)
848 TYPE_TARGET_STUB (result_type) = 1;
854 lookup_array_range_type (struct type *element_type,
855 int low_bound, int high_bound)
857 struct gdbarch *gdbarch = get_type_arch (element_type);
858 struct type *index_type = builtin_type (gdbarch)->builtin_int;
859 struct type *range_type
860 = create_range_type (NULL, index_type, low_bound, high_bound);
861 return create_array_type (NULL, element_type, range_type);
864 /* Create a string type using either a blank type supplied in
865 RESULT_TYPE, or creating a new type. String types are similar
866 enough to array of char types that we can use create_array_type to
867 build the basic type and then bash it into a string type.
869 For fixed length strings, the range type contains 0 as the lower
870 bound and the length of the string minus one as the upper bound.
872 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
873 sure it is TYPE_CODE_UNDEF before we bash it into a string
877 create_string_type (struct type *result_type,
878 struct type *string_char_type,
879 struct type *range_type)
881 result_type = create_array_type (result_type,
884 TYPE_CODE (result_type) = TYPE_CODE_STRING;
889 lookup_string_range_type (struct type *string_char_type,
890 int low_bound, int high_bound)
892 struct type *result_type;
893 result_type = lookup_array_range_type (string_char_type,
894 low_bound, high_bound);
895 TYPE_CODE (result_type) = TYPE_CODE_STRING;
900 create_set_type (struct type *result_type, struct type *domain_type)
902 if (result_type == NULL)
903 result_type = alloc_type_copy (domain_type);
905 TYPE_CODE (result_type) = TYPE_CODE_SET;
906 TYPE_NFIELDS (result_type) = 1;
907 TYPE_FIELDS (result_type) = TYPE_ZALLOC (result_type, sizeof (struct field));
909 if (!TYPE_STUB (domain_type))
911 LONGEST low_bound, high_bound, bit_length;
912 if (get_discrete_bounds (domain_type, &low_bound, &high_bound) < 0)
913 low_bound = high_bound = 0;
914 bit_length = high_bound - low_bound + 1;
915 TYPE_LENGTH (result_type)
916 = (bit_length + TARGET_CHAR_BIT - 1) / TARGET_CHAR_BIT;
918 TYPE_UNSIGNED (result_type) = 1;
920 TYPE_FIELD_TYPE (result_type, 0) = domain_type;
925 /* Convert ARRAY_TYPE to a vector type. This may modify ARRAY_TYPE
926 and any array types nested inside it. */
929 make_vector_type (struct type *array_type)
931 struct type *inner_array, *elt_type;
934 /* Find the innermost array type, in case the array is
935 multi-dimensional. */
936 inner_array = array_type;
937 while (TYPE_CODE (TYPE_TARGET_TYPE (inner_array)) == TYPE_CODE_ARRAY)
938 inner_array = TYPE_TARGET_TYPE (inner_array);
940 elt_type = TYPE_TARGET_TYPE (inner_array);
941 if (TYPE_CODE (elt_type) == TYPE_CODE_INT)
943 flags = TYPE_INSTANCE_FLAGS (elt_type) | TYPE_FLAG_NOTTEXT;
944 elt_type = make_qualified_type (elt_type, flags, NULL);
945 TYPE_TARGET_TYPE (inner_array) = elt_type;
948 TYPE_VECTOR (array_type) = 1;
952 init_vector_type (struct type *elt_type, int n)
954 struct type *array_type;
955 array_type = lookup_array_range_type (elt_type, 0, n - 1);
956 make_vector_type (array_type);
960 /* Smash TYPE to be a type of pointers to members of DOMAIN with type
961 TO_TYPE. A member pointer is a wierd thing -- it amounts to a
962 typed offset into a struct, e.g. "an int at offset 8". A MEMBER
963 TYPE doesn't include the offset (that's the value of the MEMBER
964 itself), but does include the structure type into which it points
967 When "smashing" the type, we preserve the objfile that the old type
968 pointed to, since we aren't changing where the type is actually
972 smash_to_memberptr_type (struct type *type, struct type *domain,
973 struct type *to_type)
976 TYPE_TARGET_TYPE (type) = to_type;
977 TYPE_DOMAIN_TYPE (type) = domain;
978 /* Assume that a data member pointer is the same size as a normal
981 = gdbarch_ptr_bit (get_type_arch (to_type)) / TARGET_CHAR_BIT;
982 TYPE_CODE (type) = TYPE_CODE_MEMBERPTR;
985 /* Smash TYPE to be a type of method of DOMAIN with type TO_TYPE.
986 METHOD just means `function that gets an extra "this" argument'.
988 When "smashing" the type, we preserve the objfile that the old type
989 pointed to, since we aren't changing where the type is actually
993 smash_to_method_type (struct type *type, struct type *domain,
994 struct type *to_type, struct field *args,
995 int nargs, int varargs)
998 TYPE_TARGET_TYPE (type) = to_type;
999 TYPE_DOMAIN_TYPE (type) = domain;
1000 TYPE_FIELDS (type) = args;
1001 TYPE_NFIELDS (type) = nargs;
1003 TYPE_VARARGS (type) = 1;
1004 TYPE_LENGTH (type) = 1; /* In practice, this is never needed. */
1005 TYPE_CODE (type) = TYPE_CODE_METHOD;
1008 /* Return a typename for a struct/union/enum type without "struct ",
1009 "union ", or "enum ". If the type has a NULL name, return NULL. */
1012 type_name_no_tag (const struct type *type)
1014 if (TYPE_TAG_NAME (type) != NULL)
1015 return TYPE_TAG_NAME (type);
1017 /* Is there code which expects this to return the name if there is
1018 no tag name? My guess is that this is mainly used for C++ in
1019 cases where the two will always be the same. */
1020 return TYPE_NAME (type);
1023 /* Lookup a typedef or primitive type named NAME, visible in lexical
1024 block BLOCK. If NOERR is nonzero, return zero if NAME is not
1025 suitably defined. */
1028 lookup_typename (const struct language_defn *language,
1029 struct gdbarch *gdbarch, char *name,
1030 struct block *block, int noerr)
1035 sym = lookup_symbol (name, block, VAR_DOMAIN, 0);
1036 if (sym == NULL || SYMBOL_CLASS (sym) != LOC_TYPEDEF)
1038 tmp = language_lookup_primitive_type_by_name (language, gdbarch, name);
1043 else if (!tmp && noerr)
1049 error (_("No type named %s."), name);
1052 return (SYMBOL_TYPE (sym));
1056 lookup_unsigned_typename (const struct language_defn *language,
1057 struct gdbarch *gdbarch, char *name)
1059 char *uns = alloca (strlen (name) + 10);
1061 strcpy (uns, "unsigned ");
1062 strcpy (uns + 9, name);
1063 return lookup_typename (language, gdbarch, uns, (struct block *) NULL, 0);
1067 lookup_signed_typename (const struct language_defn *language,
1068 struct gdbarch *gdbarch, char *name)
1071 char *uns = alloca (strlen (name) + 8);
1073 strcpy (uns, "signed ");
1074 strcpy (uns + 7, name);
1075 t = lookup_typename (language, gdbarch, uns, (struct block *) NULL, 1);
1076 /* If we don't find "signed FOO" just try again with plain "FOO". */
1079 return lookup_typename (language, gdbarch, name, (struct block *) NULL, 0);
1082 /* Lookup a structure type named "struct NAME",
1083 visible in lexical block BLOCK. */
1086 lookup_struct (char *name, struct block *block)
1090 sym = lookup_symbol (name, block, STRUCT_DOMAIN, 0);
1094 error (_("No struct type named %s."), name);
1096 if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_STRUCT)
1098 error (_("This context has class, union or enum %s, not a struct."),
1101 return (SYMBOL_TYPE (sym));
1104 /* Lookup a union type named "union NAME",
1105 visible in lexical block BLOCK. */
1108 lookup_union (char *name, struct block *block)
1113 sym = lookup_symbol (name, block, STRUCT_DOMAIN, 0);
1116 error (_("No union type named %s."), name);
1118 t = SYMBOL_TYPE (sym);
1120 if (TYPE_CODE (t) == TYPE_CODE_UNION)
1123 /* C++ unions may come out with TYPE_CODE_CLASS, but we look at
1124 * a further "declared_type" field to discover it is really a union.
1126 if (HAVE_CPLUS_STRUCT (t))
1127 if (TYPE_DECLARED_TYPE (t) == DECLARED_TYPE_UNION)
1130 /* If we get here, it's not a union. */
1131 error (_("This context has class, struct or enum %s, not a union."),
1136 /* Lookup an enum type named "enum NAME",
1137 visible in lexical block BLOCK. */
1140 lookup_enum (char *name, struct block *block)
1144 sym = lookup_symbol (name, block, STRUCT_DOMAIN, 0);
1147 error (_("No enum type named %s."), name);
1149 if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_ENUM)
1151 error (_("This context has class, struct or union %s, not an enum."),
1154 return (SYMBOL_TYPE (sym));
1157 /* Lookup a template type named "template NAME<TYPE>",
1158 visible in lexical block BLOCK. */
1161 lookup_template_type (char *name, struct type *type,
1162 struct block *block)
1165 char *nam = (char *)
1166 alloca (strlen (name) + strlen (TYPE_NAME (type)) + 4);
1169 strcat (nam, TYPE_NAME (type));
1170 strcat (nam, " >"); /* FIXME, extra space still introduced in gcc? */
1172 sym = lookup_symbol (nam, block, VAR_DOMAIN, 0);
1176 error (_("No template type named %s."), name);
1178 if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_STRUCT)
1180 error (_("This context has class, union or enum %s, not a struct."),
1183 return (SYMBOL_TYPE (sym));
1186 /* Given a type TYPE, lookup the type of the component of type named
1189 TYPE can be either a struct or union, or a pointer or reference to
1190 a struct or union. If it is a pointer or reference, its target
1191 type is automatically used. Thus '.' and '->' are interchangable,
1192 as specified for the definitions of the expression element types
1193 STRUCTOP_STRUCT and STRUCTOP_PTR.
1195 If NOERR is nonzero, return zero if NAME is not suitably defined.
1196 If NAME is the name of a baseclass type, return that type. */
1199 lookup_struct_elt_type (struct type *type, char *name, int noerr)
1205 CHECK_TYPEDEF (type);
1206 if (TYPE_CODE (type) != TYPE_CODE_PTR
1207 && TYPE_CODE (type) != TYPE_CODE_REF)
1209 type = TYPE_TARGET_TYPE (type);
1212 if (TYPE_CODE (type) != TYPE_CODE_STRUCT
1213 && TYPE_CODE (type) != TYPE_CODE_UNION)
1215 target_terminal_ours ();
1216 gdb_flush (gdb_stdout);
1217 fprintf_unfiltered (gdb_stderr, "Type ");
1218 type_print (type, "", gdb_stderr, -1);
1219 error (_(" is not a structure or union type."));
1223 /* FIXME: This change put in by Michael seems incorrect for the case
1224 where the structure tag name is the same as the member name.
1225 I.E. when doing "ptype bell->bar" for "struct foo { int bar; int
1226 foo; } bell;" Disabled by fnf. */
1230 typename = type_name_no_tag (type);
1231 if (typename != NULL && strcmp (typename, name) == 0)
1236 for (i = TYPE_NFIELDS (type) - 1; i >= TYPE_N_BASECLASSES (type); i--)
1238 char *t_field_name = TYPE_FIELD_NAME (type, i);
1240 if (t_field_name && (strcmp_iw (t_field_name, name) == 0))
1242 return TYPE_FIELD_TYPE (type, i);
1246 /* OK, it's not in this class. Recursively check the baseclasses. */
1247 for (i = TYPE_N_BASECLASSES (type) - 1; i >= 0; i--)
1251 t = lookup_struct_elt_type (TYPE_BASECLASS (type, i), name, 1);
1263 target_terminal_ours ();
1264 gdb_flush (gdb_stdout);
1265 fprintf_unfiltered (gdb_stderr, "Type ");
1266 type_print (type, "", gdb_stderr, -1);
1267 fprintf_unfiltered (gdb_stderr, " has no component named ");
1268 fputs_filtered (name, gdb_stderr);
1270 return (struct type *) -1; /* For lint */
1273 /* Lookup the vptr basetype/fieldno values for TYPE.
1274 If found store vptr_basetype in *BASETYPEP if non-NULL, and return
1275 vptr_fieldno. Also, if found and basetype is from the same objfile,
1277 If not found, return -1 and ignore BASETYPEP.
1278 Callers should be aware that in some cases (for example,
1279 the type or one of its baseclasses is a stub type and we are
1280 debugging a .o file), 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
1350 typedefs does not. */
1353 check_typedef (struct type *type)
1355 struct type *orig_type = type;
1356 int is_const, is_volatile;
1360 while (TYPE_CODE (type) == TYPE_CODE_TYPEDEF)
1362 if (!TYPE_TARGET_TYPE (type))
1367 /* It is dangerous to call lookup_symbol if we are currently
1368 reading a symtab. Infinite recursion is one danger. */
1369 if (currently_reading_symtab)
1372 name = type_name_no_tag (type);
1373 /* FIXME: shouldn't we separately check the TYPE_NAME and
1374 the TYPE_TAG_NAME, and look in STRUCT_DOMAIN and/or
1375 VAR_DOMAIN as appropriate? (this code was written before
1376 TYPE_NAME and TYPE_TAG_NAME were separate). */
1379 stub_noname_complaint ();
1382 sym = lookup_symbol (name, 0, STRUCT_DOMAIN, 0);
1384 TYPE_TARGET_TYPE (type) = SYMBOL_TYPE (sym);
1385 else /* TYPE_CODE_UNDEF */
1386 TYPE_TARGET_TYPE (type) = alloc_type_arch (get_type_arch (type));
1388 type = TYPE_TARGET_TYPE (type);
1391 is_const = TYPE_CONST (type);
1392 is_volatile = TYPE_VOLATILE (type);
1394 /* If this is a struct/class/union with no fields, then check
1395 whether a full definition exists somewhere else. This is for
1396 systems where a type definition with no fields is issued for such
1397 types, instead of identifying them as stub types in the first
1400 if (TYPE_IS_OPAQUE (type)
1401 && opaque_type_resolution
1402 && !currently_reading_symtab)
1404 char *name = type_name_no_tag (type);
1405 struct type *newtype;
1408 stub_noname_complaint ();
1411 newtype = lookup_transparent_type (name);
1415 /* If the resolved type and the stub are in the same
1416 objfile, then replace the stub type with the real deal.
1417 But if they're in separate objfiles, leave the stub
1418 alone; we'll just look up the transparent type every time
1419 we call check_typedef. We can't create pointers between
1420 types allocated to different objfiles, since they may
1421 have different lifetimes. Trying to copy NEWTYPE over to
1422 TYPE's objfile is pointless, too, since you'll have to
1423 move over any other types NEWTYPE refers to, which could
1424 be an unbounded amount of stuff. */
1425 if (TYPE_OBJFILE (newtype) == TYPE_OBJFILE (type))
1426 make_cv_type (is_const, is_volatile, newtype, &type);
1431 /* Otherwise, rely on the stub flag being set for opaque/stubbed
1433 else if (TYPE_STUB (type) && !currently_reading_symtab)
1435 char *name = type_name_no_tag (type);
1436 /* FIXME: shouldn't we separately check the TYPE_NAME and the
1437 TYPE_TAG_NAME, and look in STRUCT_DOMAIN and/or VAR_DOMAIN
1438 as appropriate? (this code was written before TYPE_NAME and
1439 TYPE_TAG_NAME were separate). */
1443 stub_noname_complaint ();
1446 sym = lookup_symbol (name, 0, STRUCT_DOMAIN, 0);
1449 /* Same as above for opaque types, we can replace the stub
1450 with the complete type only if they are int the same
1452 if (TYPE_OBJFILE (SYMBOL_TYPE(sym)) == TYPE_OBJFILE (type))
1453 make_cv_type (is_const, is_volatile,
1454 SYMBOL_TYPE (sym), &type);
1456 type = SYMBOL_TYPE (sym);
1460 if (TYPE_TARGET_STUB (type))
1462 struct type *range_type;
1463 struct type *target_type = check_typedef (TYPE_TARGET_TYPE (type));
1465 if (TYPE_STUB (target_type) || TYPE_TARGET_STUB (target_type))
1469 else if (TYPE_CODE (type) == TYPE_CODE_ARRAY
1470 && TYPE_NFIELDS (type) == 1
1471 && (TYPE_CODE (range_type = TYPE_INDEX_TYPE (type))
1472 == TYPE_CODE_RANGE))
1474 /* Now recompute the length of the array type, based on its
1475 number of elements and the target type's length.
1476 Watch out for Ada null Ada arrays where the high bound
1477 is smaller than the low bound. */
1478 const int low_bound = TYPE_LOW_BOUND (range_type);
1479 const int high_bound = TYPE_HIGH_BOUND (range_type);
1482 if (high_bound < low_bound)
1485 nb_elements = high_bound - low_bound + 1;
1487 TYPE_LENGTH (type) = nb_elements * TYPE_LENGTH (target_type);
1488 TYPE_TARGET_STUB (type) = 0;
1490 else if (TYPE_CODE (type) == TYPE_CODE_RANGE)
1492 TYPE_LENGTH (type) = TYPE_LENGTH (target_type);
1493 TYPE_TARGET_STUB (type) = 0;
1496 /* Cache TYPE_LENGTH for future use. */
1497 TYPE_LENGTH (orig_type) = TYPE_LENGTH (type);
1501 /* Parse a type expression in the string [P..P+LENGTH). If an error
1502 occurs, silently return a void type. */
1504 static struct type *
1505 safe_parse_type (struct gdbarch *gdbarch, char *p, int length)
1507 struct ui_file *saved_gdb_stderr;
1510 /* Suppress error messages. */
1511 saved_gdb_stderr = gdb_stderr;
1512 gdb_stderr = ui_file_new ();
1514 /* Call parse_and_eval_type() without fear of longjmp()s. */
1515 if (!gdb_parse_and_eval_type (p, length, &type))
1516 type = builtin_type (gdbarch)->builtin_void;
1518 /* Stop suppressing error messages. */
1519 ui_file_delete (gdb_stderr);
1520 gdb_stderr = saved_gdb_stderr;
1525 /* Ugly hack to convert method stubs into method types.
1527 He ain't kiddin'. This demangles the name of the method into a
1528 string including argument types, parses out each argument type,
1529 generates a string casting a zero to that type, evaluates the
1530 string, and stuffs the resulting type into an argtype vector!!!
1531 Then it knows the type of the whole function (including argument
1532 types for overloading), which info used to be in the stab's but was
1533 removed to hack back the space required for them. */
1536 check_stub_method (struct type *type, int method_id, int signature_id)
1538 struct gdbarch *gdbarch = get_type_arch (type);
1540 char *mangled_name = gdb_mangle_name (type, method_id, signature_id);
1541 char *demangled_name = cplus_demangle (mangled_name,
1542 DMGL_PARAMS | DMGL_ANSI);
1543 char *argtypetext, *p;
1544 int depth = 0, argcount = 1;
1545 struct field *argtypes;
1548 /* Make sure we got back a function string that we can use. */
1550 p = strchr (demangled_name, '(');
1554 if (demangled_name == NULL || p == NULL)
1555 error (_("Internal: Cannot demangle mangled name `%s'."),
1558 /* Now, read in the parameters that define this type. */
1563 if (*p == '(' || *p == '<')
1567 else if (*p == ')' || *p == '>')
1571 else if (*p == ',' && depth == 0)
1579 /* If we read one argument and it was ``void'', don't count it. */
1580 if (strncmp (argtypetext, "(void)", 6) == 0)
1583 /* We need one extra slot, for the THIS pointer. */
1585 argtypes = (struct field *)
1586 TYPE_ALLOC (type, (argcount + 1) * sizeof (struct field));
1589 /* Add THIS pointer for non-static methods. */
1590 f = TYPE_FN_FIELDLIST1 (type, method_id);
1591 if (TYPE_FN_FIELD_STATIC_P (f, signature_id))
1595 argtypes[0].type = lookup_pointer_type (type);
1599 if (*p != ')') /* () means no args, skip while */
1604 if (depth <= 0 && (*p == ',' || *p == ')'))
1606 /* Avoid parsing of ellipsis, they will be handled below.
1607 Also avoid ``void'' as above. */
1608 if (strncmp (argtypetext, "...", p - argtypetext) != 0
1609 && strncmp (argtypetext, "void", p - argtypetext) != 0)
1611 argtypes[argcount].type =
1612 safe_parse_type (gdbarch, argtypetext, p - argtypetext);
1615 argtypetext = p + 1;
1618 if (*p == '(' || *p == '<')
1622 else if (*p == ')' || *p == '>')
1631 TYPE_FN_FIELD_PHYSNAME (f, signature_id) = mangled_name;
1633 /* Now update the old "stub" type into a real type. */
1634 mtype = TYPE_FN_FIELD_TYPE (f, signature_id);
1635 TYPE_DOMAIN_TYPE (mtype) = type;
1636 TYPE_FIELDS (mtype) = argtypes;
1637 TYPE_NFIELDS (mtype) = argcount;
1638 TYPE_STUB (mtype) = 0;
1639 TYPE_FN_FIELD_STUB (f, signature_id) = 0;
1641 TYPE_VARARGS (mtype) = 1;
1643 xfree (demangled_name);
1646 /* This is the external interface to check_stub_method, above. This
1647 function unstubs all of the signatures for TYPE's METHOD_ID method
1648 name. After calling this function TYPE_FN_FIELD_STUB will be
1649 cleared for each signature and TYPE_FN_FIELDLIST_NAME will be
1652 This function unfortunately can not die until stabs do. */
1655 check_stub_method_group (struct type *type, int method_id)
1657 int len = TYPE_FN_FIELDLIST_LENGTH (type, method_id);
1658 struct fn_field *f = TYPE_FN_FIELDLIST1 (type, method_id);
1659 int j, found_stub = 0;
1661 for (j = 0; j < len; j++)
1662 if (TYPE_FN_FIELD_STUB (f, j))
1665 check_stub_method (type, method_id, j);
1668 /* GNU v3 methods with incorrect names were corrected when we read
1669 in type information, because it was cheaper to do it then. The
1670 only GNU v2 methods with incorrect method names are operators and
1671 destructors; destructors were also corrected when we read in type
1674 Therefore the only thing we need to handle here are v2 operator
1676 if (found_stub && strncmp (TYPE_FN_FIELD_PHYSNAME (f, 0), "_Z", 2) != 0)
1679 char dem_opname[256];
1681 ret = cplus_demangle_opname (TYPE_FN_FIELDLIST_NAME (type,
1683 dem_opname, DMGL_ANSI);
1685 ret = cplus_demangle_opname (TYPE_FN_FIELDLIST_NAME (type,
1689 TYPE_FN_FIELDLIST_NAME (type, method_id) = xstrdup (dem_opname);
1693 const struct cplus_struct_type cplus_struct_default;
1696 allocate_cplus_struct_type (struct type *type)
1698 if (!HAVE_CPLUS_STRUCT (type))
1700 TYPE_CPLUS_SPECIFIC (type) = (struct cplus_struct_type *)
1701 TYPE_ALLOC (type, sizeof (struct cplus_struct_type));
1702 *(TYPE_CPLUS_SPECIFIC (type)) = cplus_struct_default;
1706 /* Helper function to initialize the standard scalar types.
1708 If NAME is non-NULL, then we make a copy of the string pointed
1709 to by name in the objfile_obstack for that objfile, and initialize
1710 the type name to that copy. There are places (mipsread.c in particular),
1711 where init_type is called with a NULL value for NAME). */
1714 init_type (enum type_code code, int length, int flags,
1715 char *name, struct objfile *objfile)
1719 type = alloc_type (objfile);
1720 TYPE_CODE (type) = code;
1721 TYPE_LENGTH (type) = length;
1723 gdb_assert (!(flags & (TYPE_FLAG_MIN - 1)));
1724 if (flags & TYPE_FLAG_UNSIGNED)
1725 TYPE_UNSIGNED (type) = 1;
1726 if (flags & TYPE_FLAG_NOSIGN)
1727 TYPE_NOSIGN (type) = 1;
1728 if (flags & TYPE_FLAG_STUB)
1729 TYPE_STUB (type) = 1;
1730 if (flags & TYPE_FLAG_TARGET_STUB)
1731 TYPE_TARGET_STUB (type) = 1;
1732 if (flags & TYPE_FLAG_STATIC)
1733 TYPE_STATIC (type) = 1;
1734 if (flags & TYPE_FLAG_PROTOTYPED)
1735 TYPE_PROTOTYPED (type) = 1;
1736 if (flags & TYPE_FLAG_INCOMPLETE)
1737 TYPE_INCOMPLETE (type) = 1;
1738 if (flags & TYPE_FLAG_VARARGS)
1739 TYPE_VARARGS (type) = 1;
1740 if (flags & TYPE_FLAG_VECTOR)
1741 TYPE_VECTOR (type) = 1;
1742 if (flags & TYPE_FLAG_STUB_SUPPORTED)
1743 TYPE_STUB_SUPPORTED (type) = 1;
1744 if (flags & TYPE_FLAG_NOTTEXT)
1745 TYPE_NOTTEXT (type) = 1;
1746 if (flags & TYPE_FLAG_FIXED_INSTANCE)
1747 TYPE_FIXED_INSTANCE (type) = 1;
1750 TYPE_NAME (type) = obsavestring (name, strlen (name),
1751 &objfile->objfile_obstack);
1755 if (name && strcmp (name, "char") == 0)
1756 TYPE_NOSIGN (type) = 1;
1758 if (code == TYPE_CODE_STRUCT || code == TYPE_CODE_UNION
1759 || code == TYPE_CODE_NAMESPACE)
1761 INIT_CPLUS_SPECIFIC (type);
1767 can_dereference (struct type *t)
1769 /* FIXME: Should we return true for references as well as
1774 && TYPE_CODE (t) == TYPE_CODE_PTR
1775 && TYPE_CODE (TYPE_TARGET_TYPE (t)) != TYPE_CODE_VOID);
1779 is_integral_type (struct type *t)
1784 && ((TYPE_CODE (t) == TYPE_CODE_INT)
1785 || (TYPE_CODE (t) == TYPE_CODE_ENUM)
1786 || (TYPE_CODE (t) == TYPE_CODE_FLAGS)
1787 || (TYPE_CODE (t) == TYPE_CODE_CHAR)
1788 || (TYPE_CODE (t) == TYPE_CODE_RANGE)
1789 || (TYPE_CODE (t) == TYPE_CODE_BOOL)));
1792 /* Check whether BASE is an ancestor or base class or DCLASS
1793 Return 1 if so, and 0 if not.
1794 Note: callers may want to check for identity of the types before
1795 calling this function -- identical types are considered to satisfy
1796 the ancestor relationship even if they're identical. */
1799 is_ancestor (struct type *base, struct type *dclass)
1803 CHECK_TYPEDEF (base);
1804 CHECK_TYPEDEF (dclass);
1808 if (TYPE_NAME (base) && TYPE_NAME (dclass)
1809 && !strcmp (TYPE_NAME (base), TYPE_NAME (dclass)))
1812 for (i = 0; i < TYPE_N_BASECLASSES (dclass); i++)
1813 if (is_ancestor (base, TYPE_BASECLASS (dclass, i)))
1821 /* Functions for overload resolution begin here */
1823 /* Compare two badness vectors A and B and return the result.
1824 0 => A and B are identical
1825 1 => A and B are incomparable
1826 2 => A is better than B
1827 3 => A is worse than B */
1830 compare_badness (struct badness_vector *a, struct badness_vector *b)
1834 short found_pos = 0; /* any positives in c? */
1835 short found_neg = 0; /* any negatives in c? */
1837 /* differing lengths => incomparable */
1838 if (a->length != b->length)
1841 /* Subtract b from a */
1842 for (i = 0; i < a->length; i++)
1844 tmp = a->rank[i] - b->rank[i];
1854 return 1; /* incomparable */
1856 return 3; /* A > B */
1862 return 2; /* A < B */
1864 return 0; /* A == B */
1868 /* Rank a function by comparing its parameter types (PARMS, length
1869 NPARMS), to the types of an argument list (ARGS, length NARGS).
1870 Return a pointer to a badness vector. This has NARGS + 1
1873 struct badness_vector *
1874 rank_function (struct type **parms, int nparms,
1875 struct type **args, int nargs)
1878 struct badness_vector *bv;
1879 int min_len = nparms < nargs ? nparms : nargs;
1881 bv = xmalloc (sizeof (struct badness_vector));
1882 bv->length = nargs + 1; /* add 1 for the length-match rank */
1883 bv->rank = xmalloc ((nargs + 1) * sizeof (int));
1885 /* First compare the lengths of the supplied lists.
1886 If there is a mismatch, set it to a high value. */
1888 /* pai/1997-06-03 FIXME: when we have debug info about default
1889 arguments and ellipsis parameter lists, we should consider those
1890 and rank the length-match more finely. */
1892 LENGTH_MATCH (bv) = (nargs != nparms) ? LENGTH_MISMATCH_BADNESS : 0;
1894 /* Now rank all the parameters of the candidate function */
1895 for (i = 1; i <= min_len; i++)
1896 bv->rank[i] = rank_one_type (parms[i-1], args[i-1]);
1898 /* If more arguments than parameters, add dummy entries */
1899 for (i = min_len + 1; i <= nargs; i++)
1900 bv->rank[i] = TOO_FEW_PARAMS_BADNESS;
1905 /* Compare the names of two integer types, assuming that any sign
1906 qualifiers have been checked already. We do it this way because
1907 there may be an "int" in the name of one of the types. */
1910 integer_types_same_name_p (const char *first, const char *second)
1912 int first_p, second_p;
1914 /* If both are shorts, return 1; if neither is a short, keep
1916 first_p = (strstr (first, "short") != NULL);
1917 second_p = (strstr (second, "short") != NULL);
1918 if (first_p && second_p)
1920 if (first_p || second_p)
1923 /* Likewise for long. */
1924 first_p = (strstr (first, "long") != NULL);
1925 second_p = (strstr (second, "long") != NULL);
1926 if (first_p && second_p)
1928 if (first_p || second_p)
1931 /* Likewise for char. */
1932 first_p = (strstr (first, "char") != NULL);
1933 second_p = (strstr (second, "char") != NULL);
1934 if (first_p && second_p)
1936 if (first_p || second_p)
1939 /* They must both be ints. */
1943 /* Compare one type (PARM) for compatibility with another (ARG).
1944 * PARM is intended to be the parameter type of a function; and
1945 * ARG is the supplied argument's type. This function tests if
1946 * the latter can be converted to the former.
1948 * Return 0 if they are identical types;
1949 * Otherwise, return an integer which corresponds to how compatible
1950 * PARM is to ARG. The higher the return value, the worse the match.
1951 * Generally the "bad" conversions are all uniformly assigned a 100. */
1954 rank_one_type (struct type *parm, struct type *arg)
1956 /* Identical type pointers. */
1957 /* However, this still doesn't catch all cases of same type for arg
1958 and param. The reason is that builtin types are different from
1959 the same ones constructed from the object. */
1963 /* Resolve typedefs */
1964 if (TYPE_CODE (parm) == TYPE_CODE_TYPEDEF)
1965 parm = check_typedef (parm);
1966 if (TYPE_CODE (arg) == TYPE_CODE_TYPEDEF)
1967 arg = check_typedef (arg);
1970 Well, damnit, if the names are exactly the same, I'll say they
1971 are exactly the same. This happens when we generate method
1972 stubs. The types won't point to the same address, but they
1973 really are the same.
1976 if (TYPE_NAME (parm) && TYPE_NAME (arg)
1977 && !strcmp (TYPE_NAME (parm), TYPE_NAME (arg)))
1980 /* Check if identical after resolving typedefs. */
1984 /* See through references, since we can almost make non-references
1986 if (TYPE_CODE (arg) == TYPE_CODE_REF)
1987 return (rank_one_type (parm, TYPE_TARGET_TYPE (arg))
1988 + REFERENCE_CONVERSION_BADNESS);
1989 if (TYPE_CODE (parm) == TYPE_CODE_REF)
1990 return (rank_one_type (TYPE_TARGET_TYPE (parm), arg)
1991 + REFERENCE_CONVERSION_BADNESS);
1993 /* Debugging only. */
1994 fprintf_filtered (gdb_stderr,
1995 "------ Arg is %s [%d], parm is %s [%d]\n",
1996 TYPE_NAME (arg), TYPE_CODE (arg),
1997 TYPE_NAME (parm), TYPE_CODE (parm));
1999 /* x -> y means arg of type x being supplied for parameter of type y */
2001 switch (TYPE_CODE (parm))
2004 switch (TYPE_CODE (arg))
2007 if (TYPE_CODE (TYPE_TARGET_TYPE (parm)) == TYPE_CODE_VOID
2008 && TYPE_CODE (TYPE_TARGET_TYPE (arg)) != TYPE_CODE_VOID)
2009 return VOID_PTR_CONVERSION_BADNESS;
2011 return rank_one_type (TYPE_TARGET_TYPE (parm),
2012 TYPE_TARGET_TYPE (arg));
2013 case TYPE_CODE_ARRAY:
2014 return rank_one_type (TYPE_TARGET_TYPE (parm),
2015 TYPE_TARGET_TYPE (arg));
2016 case TYPE_CODE_FUNC:
2017 return rank_one_type (TYPE_TARGET_TYPE (parm), arg);
2019 case TYPE_CODE_ENUM:
2020 case TYPE_CODE_FLAGS:
2021 case TYPE_CODE_CHAR:
2022 case TYPE_CODE_RANGE:
2023 case TYPE_CODE_BOOL:
2024 return POINTER_CONVERSION_BADNESS;
2026 return INCOMPATIBLE_TYPE_BADNESS;
2028 case TYPE_CODE_ARRAY:
2029 switch (TYPE_CODE (arg))
2032 case TYPE_CODE_ARRAY:
2033 return rank_one_type (TYPE_TARGET_TYPE (parm),
2034 TYPE_TARGET_TYPE (arg));
2036 return INCOMPATIBLE_TYPE_BADNESS;
2038 case TYPE_CODE_FUNC:
2039 switch (TYPE_CODE (arg))
2041 case TYPE_CODE_PTR: /* funcptr -> func */
2042 return rank_one_type (parm, TYPE_TARGET_TYPE (arg));
2044 return INCOMPATIBLE_TYPE_BADNESS;
2047 switch (TYPE_CODE (arg))
2050 if (TYPE_LENGTH (arg) == TYPE_LENGTH (parm))
2052 /* Deal with signed, unsigned, and plain chars and
2053 signed and unsigned ints. */
2054 if (TYPE_NOSIGN (parm))
2056 /* This case only for character types */
2057 if (TYPE_NOSIGN (arg))
2058 return 0; /* plain char -> plain char */
2059 else /* signed/unsigned char -> plain char */
2060 return INTEGER_CONVERSION_BADNESS;
2062 else if (TYPE_UNSIGNED (parm))
2064 if (TYPE_UNSIGNED (arg))
2066 /* unsigned int -> unsigned int, or
2067 unsigned long -> unsigned long */
2068 if (integer_types_same_name_p (TYPE_NAME (parm),
2071 else if (integer_types_same_name_p (TYPE_NAME (arg),
2073 && integer_types_same_name_p (TYPE_NAME (parm),
2075 return INTEGER_PROMOTION_BADNESS; /* unsigned int -> unsigned long */
2077 return INTEGER_CONVERSION_BADNESS; /* unsigned long -> unsigned int */
2081 if (integer_types_same_name_p (TYPE_NAME (arg),
2083 && integer_types_same_name_p (TYPE_NAME (parm),
2085 return INTEGER_CONVERSION_BADNESS; /* signed long -> unsigned int */
2087 return INTEGER_CONVERSION_BADNESS; /* signed int/long -> unsigned int/long */
2090 else if (!TYPE_NOSIGN (arg) && !TYPE_UNSIGNED (arg))
2092 if (integer_types_same_name_p (TYPE_NAME (parm),
2095 else if (integer_types_same_name_p (TYPE_NAME (arg),
2097 && integer_types_same_name_p (TYPE_NAME (parm),
2099 return INTEGER_PROMOTION_BADNESS;
2101 return INTEGER_CONVERSION_BADNESS;
2104 return INTEGER_CONVERSION_BADNESS;
2106 else if (TYPE_LENGTH (arg) < TYPE_LENGTH (parm))
2107 return INTEGER_PROMOTION_BADNESS;
2109 return INTEGER_CONVERSION_BADNESS;
2110 case TYPE_CODE_ENUM:
2111 case TYPE_CODE_FLAGS:
2112 case TYPE_CODE_CHAR:
2113 case TYPE_CODE_RANGE:
2114 case TYPE_CODE_BOOL:
2115 return INTEGER_PROMOTION_BADNESS;
2117 return INT_FLOAT_CONVERSION_BADNESS;
2119 return NS_POINTER_CONVERSION_BADNESS;
2121 return INCOMPATIBLE_TYPE_BADNESS;
2124 case TYPE_CODE_ENUM:
2125 switch (TYPE_CODE (arg))
2128 case TYPE_CODE_CHAR:
2129 case TYPE_CODE_RANGE:
2130 case TYPE_CODE_BOOL:
2131 case TYPE_CODE_ENUM:
2132 return INTEGER_CONVERSION_BADNESS;
2134 return INT_FLOAT_CONVERSION_BADNESS;
2136 return INCOMPATIBLE_TYPE_BADNESS;
2139 case TYPE_CODE_CHAR:
2140 switch (TYPE_CODE (arg))
2142 case TYPE_CODE_RANGE:
2143 case TYPE_CODE_BOOL:
2144 case TYPE_CODE_ENUM:
2145 return INTEGER_CONVERSION_BADNESS;
2147 return INT_FLOAT_CONVERSION_BADNESS;
2149 if (TYPE_LENGTH (arg) > TYPE_LENGTH (parm))
2150 return INTEGER_CONVERSION_BADNESS;
2151 else if (TYPE_LENGTH (arg) < TYPE_LENGTH (parm))
2152 return INTEGER_PROMOTION_BADNESS;
2153 /* >>> !! else fall through !! <<< */
2154 case TYPE_CODE_CHAR:
2155 /* Deal with signed, unsigned, and plain chars for C++ and
2156 with int cases falling through from previous case. */
2157 if (TYPE_NOSIGN (parm))
2159 if (TYPE_NOSIGN (arg))
2162 return INTEGER_CONVERSION_BADNESS;
2164 else if (TYPE_UNSIGNED (parm))
2166 if (TYPE_UNSIGNED (arg))
2169 return INTEGER_PROMOTION_BADNESS;
2171 else if (!TYPE_NOSIGN (arg) && !TYPE_UNSIGNED (arg))
2174 return INTEGER_CONVERSION_BADNESS;
2176 return INCOMPATIBLE_TYPE_BADNESS;
2179 case TYPE_CODE_RANGE:
2180 switch (TYPE_CODE (arg))
2183 case TYPE_CODE_CHAR:
2184 case TYPE_CODE_RANGE:
2185 case TYPE_CODE_BOOL:
2186 case TYPE_CODE_ENUM:
2187 return INTEGER_CONVERSION_BADNESS;
2189 return INT_FLOAT_CONVERSION_BADNESS;
2191 return INCOMPATIBLE_TYPE_BADNESS;
2194 case TYPE_CODE_BOOL:
2195 switch (TYPE_CODE (arg))
2198 case TYPE_CODE_CHAR:
2199 case TYPE_CODE_RANGE:
2200 case TYPE_CODE_ENUM:
2203 return BOOLEAN_CONVERSION_BADNESS;
2204 case TYPE_CODE_BOOL:
2207 return INCOMPATIBLE_TYPE_BADNESS;
2211 switch (TYPE_CODE (arg))
2214 if (TYPE_LENGTH (arg) < TYPE_LENGTH (parm))
2215 return FLOAT_PROMOTION_BADNESS;
2216 else if (TYPE_LENGTH (arg) == TYPE_LENGTH (parm))
2219 return FLOAT_CONVERSION_BADNESS;
2221 case TYPE_CODE_BOOL:
2222 case TYPE_CODE_ENUM:
2223 case TYPE_CODE_RANGE:
2224 case TYPE_CODE_CHAR:
2225 return INT_FLOAT_CONVERSION_BADNESS;
2227 return INCOMPATIBLE_TYPE_BADNESS;
2230 case TYPE_CODE_COMPLEX:
2231 switch (TYPE_CODE (arg))
2232 { /* Strictly not needed for C++, but... */
2234 return FLOAT_PROMOTION_BADNESS;
2235 case TYPE_CODE_COMPLEX:
2238 return INCOMPATIBLE_TYPE_BADNESS;
2241 case TYPE_CODE_STRUCT:
2242 /* currently same as TYPE_CODE_CLASS */
2243 switch (TYPE_CODE (arg))
2245 case TYPE_CODE_STRUCT:
2246 /* Check for derivation */
2247 if (is_ancestor (parm, arg))
2248 return BASE_CONVERSION_BADNESS;
2249 /* else fall through */
2251 return INCOMPATIBLE_TYPE_BADNESS;
2254 case TYPE_CODE_UNION:
2255 switch (TYPE_CODE (arg))
2257 case TYPE_CODE_UNION:
2259 return INCOMPATIBLE_TYPE_BADNESS;
2262 case TYPE_CODE_MEMBERPTR:
2263 switch (TYPE_CODE (arg))
2266 return INCOMPATIBLE_TYPE_BADNESS;
2269 case TYPE_CODE_METHOD:
2270 switch (TYPE_CODE (arg))
2274 return INCOMPATIBLE_TYPE_BADNESS;
2278 switch (TYPE_CODE (arg))
2282 return INCOMPATIBLE_TYPE_BADNESS;
2287 switch (TYPE_CODE (arg))
2291 return rank_one_type (TYPE_FIELD_TYPE (parm, 0),
2292 TYPE_FIELD_TYPE (arg, 0));
2294 return INCOMPATIBLE_TYPE_BADNESS;
2297 case TYPE_CODE_VOID:
2299 return INCOMPATIBLE_TYPE_BADNESS;
2300 } /* switch (TYPE_CODE (arg)) */
2304 /* End of functions for overload resolution */
2307 print_bit_vector (B_TYPE *bits, int nbits)
2311 for (bitno = 0; bitno < nbits; bitno++)
2313 if ((bitno % 8) == 0)
2315 puts_filtered (" ");
2317 if (B_TST (bits, bitno))
2318 printf_filtered (("1"));
2320 printf_filtered (("0"));
2324 /* Note the first arg should be the "this" pointer, we may not want to
2325 include it since we may get into a infinitely recursive
2329 print_arg_types (struct field *args, int nargs, int spaces)
2335 for (i = 0; i < nargs; i++)
2336 recursive_dump_type (args[i].type, spaces + 2);
2341 field_is_static (struct field *f)
2343 /* "static" fields are the fields whose location is not relative
2344 to the address of the enclosing struct. It would be nice to
2345 have a dedicated flag that would be set for static fields when
2346 the type is being created. But in practice, checking the field
2347 loc_kind should give us an accurate answer (at least as long as
2348 we assume that DWARF block locations are not going to be used
2349 for static fields). FIXME? */
2350 return (FIELD_LOC_KIND (*f) == FIELD_LOC_KIND_PHYSNAME
2351 || FIELD_LOC_KIND (*f) == FIELD_LOC_KIND_PHYSADDR);
2355 dump_fn_fieldlists (struct type *type, int spaces)
2361 printfi_filtered (spaces, "fn_fieldlists ");
2362 gdb_print_host_address (TYPE_FN_FIELDLISTS (type), gdb_stdout);
2363 printf_filtered ("\n");
2364 for (method_idx = 0; method_idx < TYPE_NFN_FIELDS (type); method_idx++)
2366 f = TYPE_FN_FIELDLIST1 (type, method_idx);
2367 printfi_filtered (spaces + 2, "[%d] name '%s' (",
2369 TYPE_FN_FIELDLIST_NAME (type, method_idx));
2370 gdb_print_host_address (TYPE_FN_FIELDLIST_NAME (type, method_idx),
2372 printf_filtered (_(") length %d\n"),
2373 TYPE_FN_FIELDLIST_LENGTH (type, method_idx));
2374 for (overload_idx = 0;
2375 overload_idx < TYPE_FN_FIELDLIST_LENGTH (type, method_idx);
2378 printfi_filtered (spaces + 4, "[%d] physname '%s' (",
2380 TYPE_FN_FIELD_PHYSNAME (f, overload_idx));
2381 gdb_print_host_address (TYPE_FN_FIELD_PHYSNAME (f, overload_idx),
2383 printf_filtered (")\n");
2384 printfi_filtered (spaces + 8, "type ");
2385 gdb_print_host_address (TYPE_FN_FIELD_TYPE (f, overload_idx),
2387 printf_filtered ("\n");
2389 recursive_dump_type (TYPE_FN_FIELD_TYPE (f, overload_idx),
2392 printfi_filtered (spaces + 8, "args ");
2393 gdb_print_host_address (TYPE_FN_FIELD_ARGS (f, overload_idx),
2395 printf_filtered ("\n");
2397 print_arg_types (TYPE_FN_FIELD_ARGS (f, overload_idx),
2398 TYPE_NFIELDS (TYPE_FN_FIELD_TYPE (f,
2401 printfi_filtered (spaces + 8, "fcontext ");
2402 gdb_print_host_address (TYPE_FN_FIELD_FCONTEXT (f, overload_idx),
2404 printf_filtered ("\n");
2406 printfi_filtered (spaces + 8, "is_const %d\n",
2407 TYPE_FN_FIELD_CONST (f, overload_idx));
2408 printfi_filtered (spaces + 8, "is_volatile %d\n",
2409 TYPE_FN_FIELD_VOLATILE (f, overload_idx));
2410 printfi_filtered (spaces + 8, "is_private %d\n",
2411 TYPE_FN_FIELD_PRIVATE (f, overload_idx));
2412 printfi_filtered (spaces + 8, "is_protected %d\n",
2413 TYPE_FN_FIELD_PROTECTED (f, overload_idx));
2414 printfi_filtered (spaces + 8, "is_stub %d\n",
2415 TYPE_FN_FIELD_STUB (f, overload_idx));
2416 printfi_filtered (spaces + 8, "voffset %u\n",
2417 TYPE_FN_FIELD_VOFFSET (f, overload_idx));
2423 print_cplus_stuff (struct type *type, int spaces)
2425 printfi_filtered (spaces, "n_baseclasses %d\n",
2426 TYPE_N_BASECLASSES (type));
2427 printfi_filtered (spaces, "nfn_fields %d\n",
2428 TYPE_NFN_FIELDS (type));
2429 printfi_filtered (spaces, "nfn_fields_total %d\n",
2430 TYPE_NFN_FIELDS_TOTAL (type));
2431 if (TYPE_N_BASECLASSES (type) > 0)
2433 printfi_filtered (spaces, "virtual_field_bits (%d bits at *",
2434 TYPE_N_BASECLASSES (type));
2435 gdb_print_host_address (TYPE_FIELD_VIRTUAL_BITS (type),
2437 printf_filtered (")");
2439 print_bit_vector (TYPE_FIELD_VIRTUAL_BITS (type),
2440 TYPE_N_BASECLASSES (type));
2441 puts_filtered ("\n");
2443 if (TYPE_NFIELDS (type) > 0)
2445 if (TYPE_FIELD_PRIVATE_BITS (type) != NULL)
2447 printfi_filtered (spaces,
2448 "private_field_bits (%d bits at *",
2449 TYPE_NFIELDS (type));
2450 gdb_print_host_address (TYPE_FIELD_PRIVATE_BITS (type),
2452 printf_filtered (")");
2453 print_bit_vector (TYPE_FIELD_PRIVATE_BITS (type),
2454 TYPE_NFIELDS (type));
2455 puts_filtered ("\n");
2457 if (TYPE_FIELD_PROTECTED_BITS (type) != NULL)
2459 printfi_filtered (spaces,
2460 "protected_field_bits (%d bits at *",
2461 TYPE_NFIELDS (type));
2462 gdb_print_host_address (TYPE_FIELD_PROTECTED_BITS (type),
2464 printf_filtered (")");
2465 print_bit_vector (TYPE_FIELD_PROTECTED_BITS (type),
2466 TYPE_NFIELDS (type));
2467 puts_filtered ("\n");
2470 if (TYPE_NFN_FIELDS (type) > 0)
2472 dump_fn_fieldlists (type, spaces);
2476 static struct obstack dont_print_type_obstack;
2479 recursive_dump_type (struct type *type, int spaces)
2484 obstack_begin (&dont_print_type_obstack, 0);
2486 if (TYPE_NFIELDS (type) > 0
2487 || (TYPE_CPLUS_SPECIFIC (type) && TYPE_NFN_FIELDS (type) > 0))
2489 struct type **first_dont_print
2490 = (struct type **) obstack_base (&dont_print_type_obstack);
2492 int i = (struct type **)
2493 obstack_next_free (&dont_print_type_obstack) - first_dont_print;
2497 if (type == first_dont_print[i])
2499 printfi_filtered (spaces, "type node ");
2500 gdb_print_host_address (type, gdb_stdout);
2501 printf_filtered (_(" <same as already seen type>\n"));
2506 obstack_ptr_grow (&dont_print_type_obstack, type);
2509 printfi_filtered (spaces, "type node ");
2510 gdb_print_host_address (type, gdb_stdout);
2511 printf_filtered ("\n");
2512 printfi_filtered (spaces, "name '%s' (",
2513 TYPE_NAME (type) ? TYPE_NAME (type) : "<NULL>");
2514 gdb_print_host_address (TYPE_NAME (type), gdb_stdout);
2515 printf_filtered (")\n");
2516 printfi_filtered (spaces, "tagname '%s' (",
2517 TYPE_TAG_NAME (type) ? TYPE_TAG_NAME (type) : "<NULL>");
2518 gdb_print_host_address (TYPE_TAG_NAME (type), gdb_stdout);
2519 printf_filtered (")\n");
2520 printfi_filtered (spaces, "code 0x%x ", TYPE_CODE (type));
2521 switch (TYPE_CODE (type))
2523 case TYPE_CODE_UNDEF:
2524 printf_filtered ("(TYPE_CODE_UNDEF)");
2527 printf_filtered ("(TYPE_CODE_PTR)");
2529 case TYPE_CODE_ARRAY:
2530 printf_filtered ("(TYPE_CODE_ARRAY)");
2532 case TYPE_CODE_STRUCT:
2533 printf_filtered ("(TYPE_CODE_STRUCT)");
2535 case TYPE_CODE_UNION:
2536 printf_filtered ("(TYPE_CODE_UNION)");
2538 case TYPE_CODE_ENUM:
2539 printf_filtered ("(TYPE_CODE_ENUM)");
2541 case TYPE_CODE_FLAGS:
2542 printf_filtered ("(TYPE_CODE_FLAGS)");
2544 case TYPE_CODE_FUNC:
2545 printf_filtered ("(TYPE_CODE_FUNC)");
2548 printf_filtered ("(TYPE_CODE_INT)");
2551 printf_filtered ("(TYPE_CODE_FLT)");
2553 case TYPE_CODE_VOID:
2554 printf_filtered ("(TYPE_CODE_VOID)");
2557 printf_filtered ("(TYPE_CODE_SET)");
2559 case TYPE_CODE_RANGE:
2560 printf_filtered ("(TYPE_CODE_RANGE)");
2562 case TYPE_CODE_STRING:
2563 printf_filtered ("(TYPE_CODE_STRING)");
2565 case TYPE_CODE_BITSTRING:
2566 printf_filtered ("(TYPE_CODE_BITSTRING)");
2568 case TYPE_CODE_ERROR:
2569 printf_filtered ("(TYPE_CODE_ERROR)");
2571 case TYPE_CODE_MEMBERPTR:
2572 printf_filtered ("(TYPE_CODE_MEMBERPTR)");
2574 case TYPE_CODE_METHODPTR:
2575 printf_filtered ("(TYPE_CODE_METHODPTR)");
2577 case TYPE_CODE_METHOD:
2578 printf_filtered ("(TYPE_CODE_METHOD)");
2581 printf_filtered ("(TYPE_CODE_REF)");
2583 case TYPE_CODE_CHAR:
2584 printf_filtered ("(TYPE_CODE_CHAR)");
2586 case TYPE_CODE_BOOL:
2587 printf_filtered ("(TYPE_CODE_BOOL)");
2589 case TYPE_CODE_COMPLEX:
2590 printf_filtered ("(TYPE_CODE_COMPLEX)");
2592 case TYPE_CODE_TYPEDEF:
2593 printf_filtered ("(TYPE_CODE_TYPEDEF)");
2595 case TYPE_CODE_TEMPLATE:
2596 printf_filtered ("(TYPE_CODE_TEMPLATE)");
2598 case TYPE_CODE_TEMPLATE_ARG:
2599 printf_filtered ("(TYPE_CODE_TEMPLATE_ARG)");
2601 case TYPE_CODE_NAMESPACE:
2602 printf_filtered ("(TYPE_CODE_NAMESPACE)");
2605 printf_filtered ("(UNKNOWN TYPE CODE)");
2608 puts_filtered ("\n");
2609 printfi_filtered (spaces, "length %d\n", TYPE_LENGTH (type));
2610 if (TYPE_OBJFILE_OWNED (type))
2612 printfi_filtered (spaces, "objfile ");
2613 gdb_print_host_address (TYPE_OWNER (type).objfile, gdb_stdout);
2617 printfi_filtered (spaces, "gdbarch ");
2618 gdb_print_host_address (TYPE_OWNER (type).gdbarch, gdb_stdout);
2620 printf_filtered ("\n");
2621 printfi_filtered (spaces, "target_type ");
2622 gdb_print_host_address (TYPE_TARGET_TYPE (type), gdb_stdout);
2623 printf_filtered ("\n");
2624 if (TYPE_TARGET_TYPE (type) != NULL)
2626 recursive_dump_type (TYPE_TARGET_TYPE (type), spaces + 2);
2628 printfi_filtered (spaces, "pointer_type ");
2629 gdb_print_host_address (TYPE_POINTER_TYPE (type), gdb_stdout);
2630 printf_filtered ("\n");
2631 printfi_filtered (spaces, "reference_type ");
2632 gdb_print_host_address (TYPE_REFERENCE_TYPE (type), gdb_stdout);
2633 printf_filtered ("\n");
2634 printfi_filtered (spaces, "type_chain ");
2635 gdb_print_host_address (TYPE_CHAIN (type), gdb_stdout);
2636 printf_filtered ("\n");
2637 printfi_filtered (spaces, "instance_flags 0x%x",
2638 TYPE_INSTANCE_FLAGS (type));
2639 if (TYPE_CONST (type))
2641 puts_filtered (" TYPE_FLAG_CONST");
2643 if (TYPE_VOLATILE (type))
2645 puts_filtered (" TYPE_FLAG_VOLATILE");
2647 if (TYPE_CODE_SPACE (type))
2649 puts_filtered (" TYPE_FLAG_CODE_SPACE");
2651 if (TYPE_DATA_SPACE (type))
2653 puts_filtered (" TYPE_FLAG_DATA_SPACE");
2655 if (TYPE_ADDRESS_CLASS_1 (type))
2657 puts_filtered (" TYPE_FLAG_ADDRESS_CLASS_1");
2659 if (TYPE_ADDRESS_CLASS_2 (type))
2661 puts_filtered (" TYPE_FLAG_ADDRESS_CLASS_2");
2663 puts_filtered ("\n");
2665 printfi_filtered (spaces, "flags");
2666 if (TYPE_UNSIGNED (type))
2668 puts_filtered (" TYPE_FLAG_UNSIGNED");
2670 if (TYPE_NOSIGN (type))
2672 puts_filtered (" TYPE_FLAG_NOSIGN");
2674 if (TYPE_STUB (type))
2676 puts_filtered (" TYPE_FLAG_STUB");
2678 if (TYPE_TARGET_STUB (type))
2680 puts_filtered (" TYPE_FLAG_TARGET_STUB");
2682 if (TYPE_STATIC (type))
2684 puts_filtered (" TYPE_FLAG_STATIC");
2686 if (TYPE_PROTOTYPED (type))
2688 puts_filtered (" TYPE_FLAG_PROTOTYPED");
2690 if (TYPE_INCOMPLETE (type))
2692 puts_filtered (" TYPE_FLAG_INCOMPLETE");
2694 if (TYPE_VARARGS (type))
2696 puts_filtered (" TYPE_FLAG_VARARGS");
2698 /* This is used for things like AltiVec registers on ppc. Gcc emits
2699 an attribute for the array type, which tells whether or not we
2700 have a vector, instead of a regular array. */
2701 if (TYPE_VECTOR (type))
2703 puts_filtered (" TYPE_FLAG_VECTOR");
2705 if (TYPE_FIXED_INSTANCE (type))
2707 puts_filtered (" TYPE_FIXED_INSTANCE");
2709 if (TYPE_STUB_SUPPORTED (type))
2711 puts_filtered (" TYPE_STUB_SUPPORTED");
2713 if (TYPE_NOTTEXT (type))
2715 puts_filtered (" TYPE_NOTTEXT");
2717 puts_filtered ("\n");
2718 printfi_filtered (spaces, "nfields %d ", TYPE_NFIELDS (type));
2719 gdb_print_host_address (TYPE_FIELDS (type), gdb_stdout);
2720 puts_filtered ("\n");
2721 for (idx = 0; idx < TYPE_NFIELDS (type); idx++)
2723 printfi_filtered (spaces + 2,
2724 "[%d] bitpos %d bitsize %d type ",
2725 idx, TYPE_FIELD_BITPOS (type, idx),
2726 TYPE_FIELD_BITSIZE (type, idx));
2727 gdb_print_host_address (TYPE_FIELD_TYPE (type, idx), gdb_stdout);
2728 printf_filtered (" name '%s' (",
2729 TYPE_FIELD_NAME (type, idx) != NULL
2730 ? TYPE_FIELD_NAME (type, idx)
2732 gdb_print_host_address (TYPE_FIELD_NAME (type, idx), gdb_stdout);
2733 printf_filtered (")\n");
2734 if (TYPE_FIELD_TYPE (type, idx) != NULL)
2736 recursive_dump_type (TYPE_FIELD_TYPE (type, idx), spaces + 4);
2739 printfi_filtered (spaces, "vptr_basetype ");
2740 gdb_print_host_address (TYPE_VPTR_BASETYPE (type), gdb_stdout);
2741 puts_filtered ("\n");
2742 if (TYPE_VPTR_BASETYPE (type) != NULL)
2744 recursive_dump_type (TYPE_VPTR_BASETYPE (type), spaces + 2);
2746 printfi_filtered (spaces, "vptr_fieldno %d\n",
2747 TYPE_VPTR_FIELDNO (type));
2748 switch (TYPE_CODE (type))
2750 case TYPE_CODE_STRUCT:
2751 printfi_filtered (spaces, "cplus_stuff ");
2752 gdb_print_host_address (TYPE_CPLUS_SPECIFIC (type),
2754 puts_filtered ("\n");
2755 print_cplus_stuff (type, spaces);
2759 printfi_filtered (spaces, "floatformat ");
2760 if (TYPE_FLOATFORMAT (type) == NULL)
2761 puts_filtered ("(null)");
2764 puts_filtered ("{ ");
2765 if (TYPE_FLOATFORMAT (type)[0] == NULL
2766 || TYPE_FLOATFORMAT (type)[0]->name == NULL)
2767 puts_filtered ("(null)");
2769 puts_filtered (TYPE_FLOATFORMAT (type)[0]->name);
2771 puts_filtered (", ");
2772 if (TYPE_FLOATFORMAT (type)[1] == NULL
2773 || TYPE_FLOATFORMAT (type)[1]->name == NULL)
2774 puts_filtered ("(null)");
2776 puts_filtered (TYPE_FLOATFORMAT (type)[1]->name);
2778 puts_filtered (" }");
2780 puts_filtered ("\n");
2784 /* We have to pick one of the union types to be able print and
2785 test the value. Pick cplus_struct_type, even though we know
2786 it isn't any particular one. */
2787 printfi_filtered (spaces, "type_specific ");
2788 gdb_print_host_address (TYPE_CPLUS_SPECIFIC (type), gdb_stdout);
2789 if (TYPE_CPLUS_SPECIFIC (type) != NULL)
2791 printf_filtered (_(" (unknown data form)"));
2793 printf_filtered ("\n");
2798 obstack_free (&dont_print_type_obstack, NULL);
2801 /* Trivial helpers for the libiberty hash table, for mapping one
2806 struct type *old, *new;
2810 type_pair_hash (const void *item)
2812 const struct type_pair *pair = item;
2813 return htab_hash_pointer (pair->old);
2817 type_pair_eq (const void *item_lhs, const void *item_rhs)
2819 const struct type_pair *lhs = item_lhs, *rhs = item_rhs;
2820 return lhs->old == rhs->old;
2823 /* Allocate the hash table used by copy_type_recursive to walk
2824 types without duplicates. We use OBJFILE's obstack, because
2825 OBJFILE is about to be deleted. */
2828 create_copied_types_hash (struct objfile *objfile)
2830 return htab_create_alloc_ex (1, type_pair_hash, type_pair_eq,
2831 NULL, &objfile->objfile_obstack,
2832 hashtab_obstack_allocate,
2833 dummy_obstack_deallocate);
2836 /* Recursively copy (deep copy) TYPE, if it is associated with
2837 OBJFILE. Return a new type allocated using malloc, a saved type if
2838 we have already visited TYPE (using COPIED_TYPES), or TYPE if it is
2839 not associated with OBJFILE. */
2842 copy_type_recursive (struct objfile *objfile,
2844 htab_t copied_types)
2846 struct type_pair *stored, pair;
2848 struct type *new_type;
2850 if (! TYPE_OBJFILE_OWNED (type))
2853 /* This type shouldn't be pointing to any types in other objfiles;
2854 if it did, the type might disappear unexpectedly. */
2855 gdb_assert (TYPE_OBJFILE (type) == objfile);
2858 slot = htab_find_slot (copied_types, &pair, INSERT);
2860 return ((struct type_pair *) *slot)->new;
2862 new_type = alloc_type_arch (get_type_arch (type));
2864 /* We must add the new type to the hash table immediately, in case
2865 we encounter this type again during a recursive call below. */
2866 stored = obstack_alloc (&objfile->objfile_obstack, sizeof (struct type_pair));
2868 stored->new = new_type;
2871 /* Copy the common fields of types. For the main type, we simply
2872 copy the entire thing and then update specific fields as needed. */
2873 *TYPE_MAIN_TYPE (new_type) = *TYPE_MAIN_TYPE (type);
2874 TYPE_OBJFILE_OWNED (new_type) = 0;
2875 TYPE_OWNER (new_type).gdbarch = get_type_arch (type);
2877 if (TYPE_NAME (type))
2878 TYPE_NAME (new_type) = xstrdup (TYPE_NAME (type));
2879 if (TYPE_TAG_NAME (type))
2880 TYPE_TAG_NAME (new_type) = xstrdup (TYPE_TAG_NAME (type));
2882 TYPE_INSTANCE_FLAGS (new_type) = TYPE_INSTANCE_FLAGS (type);
2883 TYPE_LENGTH (new_type) = TYPE_LENGTH (type);
2885 /* Copy the fields. */
2886 if (TYPE_NFIELDS (type))
2890 nfields = TYPE_NFIELDS (type);
2891 TYPE_FIELDS (new_type) = XCALLOC (nfields, struct field);
2892 for (i = 0; i < nfields; i++)
2894 TYPE_FIELD_ARTIFICIAL (new_type, i) =
2895 TYPE_FIELD_ARTIFICIAL (type, i);
2896 TYPE_FIELD_BITSIZE (new_type, i) = TYPE_FIELD_BITSIZE (type, i);
2897 if (TYPE_FIELD_TYPE (type, i))
2898 TYPE_FIELD_TYPE (new_type, i)
2899 = copy_type_recursive (objfile, TYPE_FIELD_TYPE (type, i),
2901 if (TYPE_FIELD_NAME (type, i))
2902 TYPE_FIELD_NAME (new_type, i) =
2903 xstrdup (TYPE_FIELD_NAME (type, i));
2904 switch (TYPE_FIELD_LOC_KIND (type, i))
2906 case FIELD_LOC_KIND_BITPOS:
2907 SET_FIELD_BITPOS (TYPE_FIELD (new_type, i),
2908 TYPE_FIELD_BITPOS (type, i));
2910 case FIELD_LOC_KIND_PHYSADDR:
2911 SET_FIELD_PHYSADDR (TYPE_FIELD (new_type, i),
2912 TYPE_FIELD_STATIC_PHYSADDR (type, i));
2914 case FIELD_LOC_KIND_PHYSNAME:
2915 SET_FIELD_PHYSNAME (TYPE_FIELD (new_type, i),
2916 xstrdup (TYPE_FIELD_STATIC_PHYSNAME (type,
2920 internal_error (__FILE__, __LINE__,
2921 _("Unexpected type field location kind: %d"),
2922 TYPE_FIELD_LOC_KIND (type, i));
2927 /* Copy pointers to other types. */
2928 if (TYPE_TARGET_TYPE (type))
2929 TYPE_TARGET_TYPE (new_type) =
2930 copy_type_recursive (objfile,
2931 TYPE_TARGET_TYPE (type),
2933 if (TYPE_VPTR_BASETYPE (type))
2934 TYPE_VPTR_BASETYPE (new_type) =
2935 copy_type_recursive (objfile,
2936 TYPE_VPTR_BASETYPE (type),
2938 /* Maybe copy the type_specific bits.
2940 NOTE drow/2005-12-09: We do not copy the C++-specific bits like
2941 base classes and methods. There's no fundamental reason why we
2942 can't, but at the moment it is not needed. */
2944 if (TYPE_CODE (type) == TYPE_CODE_FLT)
2945 TYPE_FLOATFORMAT (new_type) = TYPE_FLOATFORMAT (type);
2946 else if (TYPE_CODE (type) == TYPE_CODE_STRUCT
2947 || TYPE_CODE (type) == TYPE_CODE_UNION
2948 || TYPE_CODE (type) == TYPE_CODE_TEMPLATE
2949 || TYPE_CODE (type) == TYPE_CODE_NAMESPACE)
2950 INIT_CPLUS_SPECIFIC (new_type);
2955 /* Make a copy of the given TYPE, except that the pointer & reference
2956 types are not preserved.
2958 This function assumes that the given type has an associated objfile.
2959 This objfile is used to allocate the new type. */
2962 copy_type (const struct type *type)
2964 struct type *new_type;
2966 gdb_assert (TYPE_OBJFILE_OWNED (type));
2968 new_type = alloc_type_copy (type);
2969 TYPE_INSTANCE_FLAGS (new_type) = TYPE_INSTANCE_FLAGS (type);
2970 TYPE_LENGTH (new_type) = TYPE_LENGTH (type);
2971 memcpy (TYPE_MAIN_TYPE (new_type), TYPE_MAIN_TYPE (type),
2972 sizeof (struct main_type));
2978 /* Helper functions to initialize architecture-specific types. */
2980 /* Allocate a type structure associated with GDBARCH and set its
2981 CODE, LENGTH, and NAME fields. */
2983 arch_type (struct gdbarch *gdbarch,
2984 enum type_code code, int length, char *name)
2988 type = alloc_type_arch (gdbarch);
2989 TYPE_CODE (type) = code;
2990 TYPE_LENGTH (type) = length;
2993 TYPE_NAME (type) = xstrdup (name);
2998 /* Allocate a TYPE_CODE_INT type structure associated with GDBARCH.
2999 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
3000 the type's TYPE_UNSIGNED flag. NAME is the type name. */
3002 arch_integer_type (struct gdbarch *gdbarch,
3003 int bit, int unsigned_p, char *name)
3007 t = arch_type (gdbarch, TYPE_CODE_INT, bit / TARGET_CHAR_BIT, name);
3009 TYPE_UNSIGNED (t) = 1;
3010 if (name && strcmp (name, "char") == 0)
3011 TYPE_NOSIGN (t) = 1;
3016 /* Allocate a TYPE_CODE_CHAR type structure associated with GDBARCH.
3017 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
3018 the type's TYPE_UNSIGNED flag. NAME is the type name. */
3020 arch_character_type (struct gdbarch *gdbarch,
3021 int bit, int unsigned_p, char *name)
3025 t = arch_type (gdbarch, TYPE_CODE_CHAR, bit / TARGET_CHAR_BIT, name);
3027 TYPE_UNSIGNED (t) = 1;
3032 /* Allocate a TYPE_CODE_BOOL type structure associated with GDBARCH.
3033 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
3034 the type's TYPE_UNSIGNED flag. NAME is the type name. */
3036 arch_boolean_type (struct gdbarch *gdbarch,
3037 int bit, int unsigned_p, char *name)
3041 t = arch_type (gdbarch, TYPE_CODE_BOOL, bit / TARGET_CHAR_BIT, name);
3043 TYPE_UNSIGNED (t) = 1;
3048 /* Allocate a TYPE_CODE_FLT type structure associated with GDBARCH.
3049 BIT is the type size in bits; if BIT equals -1, the size is
3050 determined by the floatformat. NAME is the type name. Set the
3051 TYPE_FLOATFORMAT from FLOATFORMATS. */
3053 arch_float_type (struct gdbarch *gdbarch,
3054 int bit, char *name, const struct floatformat **floatformats)
3060 gdb_assert (floatformats != NULL);
3061 gdb_assert (floatformats[0] != NULL && floatformats[1] != NULL);
3062 bit = floatformats[0]->totalsize;
3064 gdb_assert (bit >= 0);
3066 t = arch_type (gdbarch, TYPE_CODE_FLT, bit / TARGET_CHAR_BIT, name);
3067 TYPE_FLOATFORMAT (t) = floatformats;
3071 /* Allocate a TYPE_CODE_COMPLEX type structure associated with GDBARCH.
3072 NAME is the type name. TARGET_TYPE is the component float type. */
3074 arch_complex_type (struct gdbarch *gdbarch,
3075 char *name, struct type *target_type)
3078 t = arch_type (gdbarch, TYPE_CODE_COMPLEX,
3079 2 * TYPE_LENGTH (target_type), name);
3080 TYPE_TARGET_TYPE (t) = target_type;
3084 /* Allocate a TYPE_CODE_FLAGS type structure associated with GDBARCH.
3085 NAME is the type name. LENGTH is the number of flag bits. */
3087 arch_flags_type (struct gdbarch *gdbarch, char *name, int length)
3089 int nfields = length * TARGET_CHAR_BIT;
3092 type = arch_type (gdbarch, TYPE_CODE_FLAGS, length, name);
3093 TYPE_UNSIGNED (type) = 1;
3094 TYPE_NFIELDS (type) = nfields;
3095 TYPE_FIELDS (type) = TYPE_ZALLOC (type, nfields * sizeof (struct field));
3100 /* Add field to TYPE_CODE_FLAGS type TYPE to indicate the bit at
3101 position BITPOS is called NAME. */
3103 append_flags_type_flag (struct type *type, int bitpos, char *name)
3105 gdb_assert (TYPE_CODE (type) == TYPE_CODE_FLAGS);
3106 gdb_assert (bitpos < TYPE_NFIELDS (type));
3107 gdb_assert (bitpos >= 0);
3111 TYPE_FIELD_NAME (type, bitpos) = xstrdup (name);
3112 TYPE_FIELD_BITPOS (type, bitpos) = bitpos;
3116 /* Don't show this field to the user. */
3117 TYPE_FIELD_BITPOS (type, bitpos) = -1;
3121 /* Allocate a TYPE_CODE_STRUCT or TYPE_CODE_UNION type structure (as
3122 specified by CODE) associated with GDBARCH. NAME is the type name. */
3124 arch_composite_type (struct gdbarch *gdbarch, char *name, enum type_code code)
3127 gdb_assert (code == TYPE_CODE_STRUCT || code == TYPE_CODE_UNION);
3128 t = arch_type (gdbarch, code, 0, NULL);
3129 TYPE_TAG_NAME (t) = name;
3130 INIT_CPLUS_SPECIFIC (t);
3134 /* Add new field with name NAME and type FIELD to composite type T.
3135 ALIGNMENT (if non-zero) specifies the minimum field alignment. */
3137 append_composite_type_field_aligned (struct type *t, char *name,
3138 struct type *field, int alignment)
3141 TYPE_NFIELDS (t) = TYPE_NFIELDS (t) + 1;
3142 TYPE_FIELDS (t) = xrealloc (TYPE_FIELDS (t),
3143 sizeof (struct field) * TYPE_NFIELDS (t));
3144 f = &(TYPE_FIELDS (t)[TYPE_NFIELDS (t) - 1]);
3145 memset (f, 0, sizeof f[0]);
3146 FIELD_TYPE (f[0]) = field;
3147 FIELD_NAME (f[0]) = name;
3148 if (TYPE_CODE (t) == TYPE_CODE_UNION)
3150 if (TYPE_LENGTH (t) < TYPE_LENGTH (field))
3151 TYPE_LENGTH (t) = TYPE_LENGTH (field);
3153 else if (TYPE_CODE (t) == TYPE_CODE_STRUCT)
3155 TYPE_LENGTH (t) = TYPE_LENGTH (t) + TYPE_LENGTH (field);
3156 if (TYPE_NFIELDS (t) > 1)
3158 FIELD_BITPOS (f[0]) = (FIELD_BITPOS (f[-1])
3159 + (TYPE_LENGTH (FIELD_TYPE (f[-1]))
3160 * TARGET_CHAR_BIT));
3164 int left = FIELD_BITPOS (f[0]) % (alignment * TARGET_CHAR_BIT);
3167 FIELD_BITPOS (f[0]) += left;
3168 TYPE_LENGTH (t) += left / TARGET_CHAR_BIT;
3175 /* Add new field with name NAME and type FIELD to composite type T. */
3177 append_composite_type_field (struct type *t, char *name,
3180 append_composite_type_field_aligned (t, name, field, 0);
3184 static struct gdbarch_data *gdbtypes_data;
3186 const struct builtin_type *
3187 builtin_type (struct gdbarch *gdbarch)
3189 return gdbarch_data (gdbarch, gdbtypes_data);
3193 gdbtypes_post_init (struct gdbarch *gdbarch)
3195 struct builtin_type *builtin_type
3196 = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct builtin_type);
3199 builtin_type->builtin_void
3200 = arch_type (gdbarch, TYPE_CODE_VOID, 1, "void");
3201 builtin_type->builtin_char
3202 = arch_integer_type (gdbarch, TARGET_CHAR_BIT,
3203 !gdbarch_char_signed (gdbarch), "char");
3204 builtin_type->builtin_signed_char
3205 = arch_integer_type (gdbarch, TARGET_CHAR_BIT,
3207 builtin_type->builtin_unsigned_char
3208 = arch_integer_type (gdbarch, TARGET_CHAR_BIT,
3209 1, "unsigned char");
3210 builtin_type->builtin_short
3211 = arch_integer_type (gdbarch, gdbarch_short_bit (gdbarch),
3213 builtin_type->builtin_unsigned_short
3214 = arch_integer_type (gdbarch, gdbarch_short_bit (gdbarch),
3215 1, "unsigned short");
3216 builtin_type->builtin_int
3217 = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch),
3219 builtin_type->builtin_unsigned_int
3220 = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch),
3222 builtin_type->builtin_long
3223 = arch_integer_type (gdbarch, gdbarch_long_bit (gdbarch),
3225 builtin_type->builtin_unsigned_long
3226 = arch_integer_type (gdbarch, gdbarch_long_bit (gdbarch),
3227 1, "unsigned long");
3228 builtin_type->builtin_long_long
3229 = arch_integer_type (gdbarch, gdbarch_long_long_bit (gdbarch),
3231 builtin_type->builtin_unsigned_long_long
3232 = arch_integer_type (gdbarch, gdbarch_long_long_bit (gdbarch),
3233 1, "unsigned long long");
3234 builtin_type->builtin_float
3235 = arch_float_type (gdbarch, gdbarch_float_bit (gdbarch),
3236 "float", gdbarch_float_format (gdbarch));
3237 builtin_type->builtin_double
3238 = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch),
3239 "double", gdbarch_double_format (gdbarch));
3240 builtin_type->builtin_long_double
3241 = arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch),
3242 "long double", gdbarch_long_double_format (gdbarch));
3243 builtin_type->builtin_complex
3244 = arch_complex_type (gdbarch, "complex",
3245 builtin_type->builtin_float);
3246 builtin_type->builtin_double_complex
3247 = arch_complex_type (gdbarch, "double complex",
3248 builtin_type->builtin_double);
3249 builtin_type->builtin_string
3250 = arch_type (gdbarch, TYPE_CODE_STRING, 1, "string");
3251 builtin_type->builtin_bool
3252 = arch_type (gdbarch, TYPE_CODE_BOOL, 1, "bool");
3254 /* The following three are about decimal floating point types, which
3255 are 32-bits, 64-bits and 128-bits respectively. */
3256 builtin_type->builtin_decfloat
3257 = arch_type (gdbarch, TYPE_CODE_DECFLOAT, 32 / 8, "_Decimal32");
3258 builtin_type->builtin_decdouble
3259 = arch_type (gdbarch, TYPE_CODE_DECFLOAT, 64 / 8, "_Decimal64");
3260 builtin_type->builtin_declong
3261 = arch_type (gdbarch, TYPE_CODE_DECFLOAT, 128 / 8, "_Decimal128");
3263 /* "True" character types. */
3264 builtin_type->builtin_true_char
3265 = arch_character_type (gdbarch, TARGET_CHAR_BIT, 0, "true character");
3266 builtin_type->builtin_true_unsigned_char
3267 = arch_character_type (gdbarch, TARGET_CHAR_BIT, 1, "true character");
3269 /* Fixed-size integer types. */
3270 builtin_type->builtin_int0
3271 = arch_integer_type (gdbarch, 0, 0, "int0_t");
3272 builtin_type->builtin_int8
3273 = arch_integer_type (gdbarch, 8, 0, "int8_t");
3274 builtin_type->builtin_uint8
3275 = arch_integer_type (gdbarch, 8, 1, "uint8_t");
3276 builtin_type->builtin_int16
3277 = arch_integer_type (gdbarch, 16, 0, "int16_t");
3278 builtin_type->builtin_uint16
3279 = arch_integer_type (gdbarch, 16, 1, "uint16_t");
3280 builtin_type->builtin_int32
3281 = arch_integer_type (gdbarch, 32, 0, "int32_t");
3282 builtin_type->builtin_uint32
3283 = arch_integer_type (gdbarch, 32, 1, "uint32_t");
3284 builtin_type->builtin_int64
3285 = arch_integer_type (gdbarch, 64, 0, "int64_t");
3286 builtin_type->builtin_uint64
3287 = arch_integer_type (gdbarch, 64, 1, "uint64_t");
3288 builtin_type->builtin_int128
3289 = arch_integer_type (gdbarch, 128, 0, "int128_t");
3290 builtin_type->builtin_uint128
3291 = arch_integer_type (gdbarch, 128, 1, "uint128_t");
3292 TYPE_NOTTEXT (builtin_type->builtin_int8) = 1;
3293 TYPE_NOTTEXT (builtin_type->builtin_uint8) = 1;
3295 /* Default data/code pointer types. */
3296 builtin_type->builtin_data_ptr
3297 = lookup_pointer_type (builtin_type->builtin_void);
3298 builtin_type->builtin_func_ptr
3299 = lookup_pointer_type (lookup_function_type (builtin_type->builtin_void));
3301 /* This type represents a GDB internal function. */
3302 builtin_type->internal_fn
3303 = arch_type (gdbarch, TYPE_CODE_INTERNAL_FUNCTION, 0,
3304 "<internal function>");
3306 return builtin_type;
3310 /* This set of objfile-based types is intended to be used by symbol
3311 readers as basic types. */
3313 static const struct objfile_data *objfile_type_data;
3315 const struct objfile_type *
3316 objfile_type (struct objfile *objfile)
3318 struct gdbarch *gdbarch;
3319 struct objfile_type *objfile_type
3320 = objfile_data (objfile, objfile_type_data);
3323 return objfile_type;
3325 objfile_type = OBSTACK_CALLOC (&objfile->objfile_obstack,
3326 1, struct objfile_type);
3328 /* Use the objfile architecture to determine basic type properties. */
3329 gdbarch = get_objfile_arch (objfile);
3332 objfile_type->builtin_void
3333 = init_type (TYPE_CODE_VOID, 1,
3337 objfile_type->builtin_char
3338 = init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
3340 | (gdbarch_char_signed (gdbarch) ? 0 : TYPE_FLAG_UNSIGNED)),
3342 objfile_type->builtin_signed_char
3343 = init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
3345 "signed char", objfile);
3346 objfile_type->builtin_unsigned_char
3347 = init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
3349 "unsigned char", objfile);
3350 objfile_type->builtin_short
3351 = init_type (TYPE_CODE_INT,
3352 gdbarch_short_bit (gdbarch) / TARGET_CHAR_BIT,
3353 0, "short", objfile);
3354 objfile_type->builtin_unsigned_short
3355 = init_type (TYPE_CODE_INT,
3356 gdbarch_short_bit (gdbarch) / TARGET_CHAR_BIT,
3357 TYPE_FLAG_UNSIGNED, "unsigned short", objfile);
3358 objfile_type->builtin_int
3359 = init_type (TYPE_CODE_INT,
3360 gdbarch_int_bit (gdbarch) / TARGET_CHAR_BIT,
3362 objfile_type->builtin_unsigned_int
3363 = init_type (TYPE_CODE_INT,
3364 gdbarch_int_bit (gdbarch) / TARGET_CHAR_BIT,
3365 TYPE_FLAG_UNSIGNED, "unsigned int", objfile);
3366 objfile_type->builtin_long
3367 = init_type (TYPE_CODE_INT,
3368 gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT,
3369 0, "long", objfile);
3370 objfile_type->builtin_unsigned_long
3371 = init_type (TYPE_CODE_INT,
3372 gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT,
3373 TYPE_FLAG_UNSIGNED, "unsigned long", objfile);
3374 objfile_type->builtin_long_long
3375 = init_type (TYPE_CODE_INT,
3376 gdbarch_long_long_bit (gdbarch) / TARGET_CHAR_BIT,
3377 0, "long long", objfile);
3378 objfile_type->builtin_unsigned_long_long
3379 = init_type (TYPE_CODE_INT,
3380 gdbarch_long_long_bit (gdbarch) / TARGET_CHAR_BIT,
3381 TYPE_FLAG_UNSIGNED, "unsigned long long", objfile);
3383 objfile_type->builtin_float
3384 = init_type (TYPE_CODE_FLT,
3385 gdbarch_float_bit (gdbarch) / TARGET_CHAR_BIT,
3386 0, "float", objfile);
3387 TYPE_FLOATFORMAT (objfile_type->builtin_float)
3388 = gdbarch_float_format (gdbarch);
3389 objfile_type->builtin_double
3390 = init_type (TYPE_CODE_FLT,
3391 gdbarch_double_bit (gdbarch) / TARGET_CHAR_BIT,
3392 0, "double", objfile);
3393 TYPE_FLOATFORMAT (objfile_type->builtin_double)
3394 = gdbarch_double_format (gdbarch);
3395 objfile_type->builtin_long_double
3396 = init_type (TYPE_CODE_FLT,
3397 gdbarch_long_double_bit (gdbarch) / TARGET_CHAR_BIT,
3398 0, "long double", objfile);
3399 TYPE_FLOATFORMAT (objfile_type->builtin_long_double)
3400 = gdbarch_long_double_format (gdbarch);
3402 /* This type represents a type that was unrecognized in symbol read-in. */
3403 objfile_type->builtin_error
3404 = init_type (TYPE_CODE_ERROR, 0, 0, "<unknown type>", objfile);
3406 /* The following set of types is used for symbols with no
3407 debug information. */
3408 objfile_type->nodebug_text_symbol
3409 = init_type (TYPE_CODE_FUNC, 1, 0,
3410 "<text variable, no debug info>", objfile);
3411 TYPE_TARGET_TYPE (objfile_type->nodebug_text_symbol)
3412 = objfile_type->builtin_int;
3413 objfile_type->nodebug_data_symbol
3414 = init_type (TYPE_CODE_INT,
3415 gdbarch_int_bit (gdbarch) / HOST_CHAR_BIT, 0,
3416 "<data variable, no debug info>", objfile);
3417 objfile_type->nodebug_unknown_symbol
3418 = init_type (TYPE_CODE_INT, 1, 0,
3419 "<variable (not text or data), no debug info>", objfile);
3420 objfile_type->nodebug_tls_symbol
3421 = init_type (TYPE_CODE_INT,
3422 gdbarch_int_bit (gdbarch) / HOST_CHAR_BIT, 0,
3423 "<thread local variable, no debug info>", objfile);
3425 /* NOTE: on some targets, addresses and pointers are not necessarily
3426 the same --- for example, on the D10V, pointers are 16 bits long,
3427 but addresses are 32 bits long. See doc/gdbint.texinfo,
3428 ``Pointers Are Not Always Addresses''.
3431 - gdb's `struct type' always describes the target's
3433 - gdb's `struct value' objects should always hold values in
3435 - gdb's CORE_ADDR values are addresses in the unified virtual
3436 address space that the assembler and linker work with. Thus,
3437 since target_read_memory takes a CORE_ADDR as an argument, it
3438 can access any memory on the target, even if the processor has
3439 separate code and data address spaces.
3442 - If v is a value holding a D10V code pointer, its contents are
3443 in target form: a big-endian address left-shifted two bits.
3444 - If p is a D10V pointer type, TYPE_LENGTH (p) == 2, just as
3445 sizeof (void *) == 2 on the target.
3447 In this context, objfile_type->builtin_core_addr is a bit odd:
3448 it's a target type for a value the target will never see. It's
3449 only used to hold the values of (typeless) linker symbols, which
3450 are indeed in the unified virtual address space. */
3452 objfile_type->builtin_core_addr
3453 = init_type (TYPE_CODE_INT,
3454 gdbarch_addr_bit (gdbarch) / 8,
3455 TYPE_FLAG_UNSIGNED, "__CORE_ADDR", objfile);
3457 set_objfile_data (objfile, objfile_type_data, objfile_type);
3458 return objfile_type;
3462 extern void _initialize_gdbtypes (void);
3464 _initialize_gdbtypes (void)
3466 gdbtypes_data = gdbarch_data_register_post_init (gdbtypes_post_init);
3467 objfile_type_data = register_objfile_data ();
3469 add_setshow_zinteger_cmd ("overload", no_class, &overload_debug, _("\
3470 Set debugging of C++ overloading."), _("\
3471 Show debugging of C++ overloading."), _("\
3472 When enabled, ranking of the functions is displayed."),
3474 show_overload_debug,
3475 &setdebuglist, &showdebuglist);
3477 /* Add user knob for controlling resolution of opaque types. */
3478 add_setshow_boolean_cmd ("opaque-type-resolution", class_support,
3479 &opaque_type_resolution, _("\
3480 Set resolution of opaque struct/class/union types (if set before loading symbols)."), _("\
3481 Show resolution of opaque struct/class/union types (if set before loading symbols)."), NULL,
3483 show_opaque_type_resolution,
3484 &setlist, &showlist);