1 /* Support routines for manipulating internal types for GDB.
3 Copyright (C) 1992-1996, 1998-2012 Free Software Foundation, Inc.
5 Contributed by Cygnus Support, using pieces from other GDB modules.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
23 #include "gdb_string.h"
29 #include "expression.h"
34 #include "complaints.h"
37 #include "gdb_assert.h"
39 #include "exceptions.h"
41 /* Initialize BADNESS constants. */
43 const struct rank LENGTH_MISMATCH_BADNESS = {100,0};
45 const struct rank TOO_FEW_PARAMS_BADNESS = {100,0};
46 const struct rank INCOMPATIBLE_TYPE_BADNESS = {100,0};
48 const struct rank EXACT_MATCH_BADNESS = {0,0};
50 const struct rank INTEGER_PROMOTION_BADNESS = {1,0};
51 const struct rank FLOAT_PROMOTION_BADNESS = {1,0};
52 const struct rank BASE_PTR_CONVERSION_BADNESS = {1,0};
53 const struct rank INTEGER_CONVERSION_BADNESS = {2,0};
54 const struct rank FLOAT_CONVERSION_BADNESS = {2,0};
55 const struct rank INT_FLOAT_CONVERSION_BADNESS = {2,0};
56 const struct rank VOID_PTR_CONVERSION_BADNESS = {2,0};
57 const struct rank BOOL_PTR_CONVERSION_BADNESS = {3,0};
58 const struct rank BASE_CONVERSION_BADNESS = {2,0};
59 const struct rank REFERENCE_CONVERSION_BADNESS = {2,0};
60 const struct rank NULL_POINTER_CONVERSION_BADNESS = {2,0};
61 const struct rank NS_POINTER_CONVERSION_BADNESS = {10,0};
63 /* Floatformat pairs. */
64 const struct floatformat *floatformats_ieee_half[BFD_ENDIAN_UNKNOWN] = {
65 &floatformat_ieee_half_big,
66 &floatformat_ieee_half_little
68 const struct floatformat *floatformats_ieee_single[BFD_ENDIAN_UNKNOWN] = {
69 &floatformat_ieee_single_big,
70 &floatformat_ieee_single_little
72 const struct floatformat *floatformats_ieee_double[BFD_ENDIAN_UNKNOWN] = {
73 &floatformat_ieee_double_big,
74 &floatformat_ieee_double_little
76 const struct floatformat *floatformats_ieee_double_littlebyte_bigword[BFD_ENDIAN_UNKNOWN] = {
77 &floatformat_ieee_double_big,
78 &floatformat_ieee_double_littlebyte_bigword
80 const struct floatformat *floatformats_i387_ext[BFD_ENDIAN_UNKNOWN] = {
81 &floatformat_i387_ext,
84 const struct floatformat *floatformats_m68881_ext[BFD_ENDIAN_UNKNOWN] = {
85 &floatformat_m68881_ext,
86 &floatformat_m68881_ext
88 const struct floatformat *floatformats_arm_ext[BFD_ENDIAN_UNKNOWN] = {
89 &floatformat_arm_ext_big,
90 &floatformat_arm_ext_littlebyte_bigword
92 const struct floatformat *floatformats_ia64_spill[BFD_ENDIAN_UNKNOWN] = {
93 &floatformat_ia64_spill_big,
94 &floatformat_ia64_spill_little
96 const struct floatformat *floatformats_ia64_quad[BFD_ENDIAN_UNKNOWN] = {
97 &floatformat_ia64_quad_big,
98 &floatformat_ia64_quad_little
100 const struct floatformat *floatformats_vax_f[BFD_ENDIAN_UNKNOWN] = {
104 const struct floatformat *floatformats_vax_d[BFD_ENDIAN_UNKNOWN] = {
108 const struct floatformat *floatformats_ibm_long_double[BFD_ENDIAN_UNKNOWN] = {
109 &floatformat_ibm_long_double,
110 &floatformat_ibm_long_double
114 int opaque_type_resolution = 1;
116 show_opaque_type_resolution (struct ui_file *file, int from_tty,
117 struct cmd_list_element *c,
120 fprintf_filtered (file, _("Resolution of opaque struct/class/union types "
121 "(if set before loading symbols) is %s.\n"),
125 int overload_debug = 0;
127 show_overload_debug (struct ui_file *file, int from_tty,
128 struct cmd_list_element *c, const char *value)
130 fprintf_filtered (file, _("Debugging of C++ overloading is %s.\n"),
138 }; /* Maximum extension is 128! FIXME */
140 static void print_bit_vector (B_TYPE *, int);
141 static void print_arg_types (struct field *, int, int);
142 static void dump_fn_fieldlists (struct type *, int);
143 static void print_cplus_stuff (struct type *, int);
146 /* Allocate a new OBJFILE-associated type structure and fill it
147 with some defaults. Space for the type structure is allocated
148 on the objfile's objfile_obstack. */
151 alloc_type (struct objfile *objfile)
155 gdb_assert (objfile != NULL);
157 /* Alloc the structure and start off with all fields zeroed. */
158 type = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct type);
159 TYPE_MAIN_TYPE (type) = OBSTACK_ZALLOC (&objfile->objfile_obstack,
161 OBJSTAT (objfile, n_types++);
163 TYPE_OBJFILE_OWNED (type) = 1;
164 TYPE_OWNER (type).objfile = objfile;
166 /* Initialize the fields that might not be zero. */
168 TYPE_CODE (type) = TYPE_CODE_UNDEF;
169 TYPE_VPTR_FIELDNO (type) = -1;
170 TYPE_CHAIN (type) = type; /* Chain back to itself. */
175 /* Allocate a new GDBARCH-associated type structure and fill it
176 with some defaults. Space for the type structure is allocated
180 alloc_type_arch (struct gdbarch *gdbarch)
184 gdb_assert (gdbarch != NULL);
186 /* Alloc the structure and start off with all fields zeroed. */
188 type = XZALLOC (struct type);
189 TYPE_MAIN_TYPE (type) = XZALLOC (struct main_type);
191 TYPE_OBJFILE_OWNED (type) = 0;
192 TYPE_OWNER (type).gdbarch = gdbarch;
194 /* Initialize the fields that might not be zero. */
196 TYPE_CODE (type) = TYPE_CODE_UNDEF;
197 TYPE_VPTR_FIELDNO (type) = -1;
198 TYPE_CHAIN (type) = type; /* Chain back to itself. */
203 /* If TYPE is objfile-associated, allocate a new type structure
204 associated with the same objfile. If TYPE is gdbarch-associated,
205 allocate a new type structure associated with the same gdbarch. */
208 alloc_type_copy (const struct type *type)
210 if (TYPE_OBJFILE_OWNED (type))
211 return alloc_type (TYPE_OWNER (type).objfile);
213 return alloc_type_arch (TYPE_OWNER (type).gdbarch);
216 /* If TYPE is gdbarch-associated, return that architecture.
217 If TYPE is objfile-associated, return that objfile's architecture. */
220 get_type_arch (const struct type *type)
222 if (TYPE_OBJFILE_OWNED (type))
223 return get_objfile_arch (TYPE_OWNER (type).objfile);
225 return TYPE_OWNER (type).gdbarch;
229 /* Alloc a new type instance structure, fill it with some defaults,
230 and point it at OLDTYPE. Allocate the new type instance from the
231 same place as OLDTYPE. */
234 alloc_type_instance (struct type *oldtype)
238 /* Allocate the structure. */
240 if (! TYPE_OBJFILE_OWNED (oldtype))
241 type = XZALLOC (struct type);
243 type = OBSTACK_ZALLOC (&TYPE_OBJFILE (oldtype)->objfile_obstack,
246 TYPE_MAIN_TYPE (type) = TYPE_MAIN_TYPE (oldtype);
248 TYPE_CHAIN (type) = type; /* Chain back to itself for now. */
253 /* Clear all remnants of the previous type at TYPE, in preparation for
254 replacing it with something else. Preserve owner information. */
256 smash_type (struct type *type)
258 int objfile_owned = TYPE_OBJFILE_OWNED (type);
259 union type_owner owner = TYPE_OWNER (type);
261 memset (TYPE_MAIN_TYPE (type), 0, sizeof (struct main_type));
263 /* Restore owner information. */
264 TYPE_OBJFILE_OWNED (type) = objfile_owned;
265 TYPE_OWNER (type) = owner;
267 /* For now, delete the rings. */
268 TYPE_CHAIN (type) = type;
270 /* For now, leave the pointer/reference types alone. */
273 /* Lookup a pointer to a type TYPE. TYPEPTR, if nonzero, points
274 to a pointer to memory where the pointer type should be stored.
275 If *TYPEPTR is zero, update it to point to the pointer type we return.
276 We allocate new memory if needed. */
279 make_pointer_type (struct type *type, struct type **typeptr)
281 struct type *ntype; /* New type */
284 ntype = TYPE_POINTER_TYPE (type);
289 return ntype; /* Don't care about alloc,
290 and have new type. */
291 else if (*typeptr == 0)
293 *typeptr = ntype; /* Tracking alloc, and have new type. */
298 if (typeptr == 0 || *typeptr == 0) /* We'll need to allocate one. */
300 ntype = alloc_type_copy (type);
304 else /* We have storage, but need to reset it. */
307 chain = TYPE_CHAIN (ntype);
309 TYPE_CHAIN (ntype) = chain;
312 TYPE_TARGET_TYPE (ntype) = type;
313 TYPE_POINTER_TYPE (type) = ntype;
315 /* FIXME! Assume the machine has only one representation for
319 = gdbarch_ptr_bit (get_type_arch (type)) / TARGET_CHAR_BIT;
320 TYPE_CODE (ntype) = TYPE_CODE_PTR;
322 /* Mark pointers as unsigned. The target converts between pointers
323 and addresses (CORE_ADDRs) using gdbarch_pointer_to_address and
324 gdbarch_address_to_pointer. */
325 TYPE_UNSIGNED (ntype) = 1;
327 if (!TYPE_POINTER_TYPE (type)) /* Remember it, if don't have one. */
328 TYPE_POINTER_TYPE (type) = ntype;
330 /* Update the length of all the other variants of this type. */
331 chain = TYPE_CHAIN (ntype);
332 while (chain != ntype)
334 TYPE_LENGTH (chain) = TYPE_LENGTH (ntype);
335 chain = TYPE_CHAIN (chain);
341 /* Given a type TYPE, return a type of pointers to that type.
342 May need to construct such a type if this is the first use. */
345 lookup_pointer_type (struct type *type)
347 return make_pointer_type (type, (struct type **) 0);
350 /* Lookup a C++ `reference' to a type TYPE. TYPEPTR, if nonzero,
351 points to a pointer to memory where the reference type should be
352 stored. If *TYPEPTR is zero, update it to point to the reference
353 type we return. We allocate new memory if needed. */
356 make_reference_type (struct type *type, struct type **typeptr)
358 struct type *ntype; /* New type */
361 ntype = TYPE_REFERENCE_TYPE (type);
366 return ntype; /* Don't care about alloc,
367 and have new type. */
368 else if (*typeptr == 0)
370 *typeptr = ntype; /* Tracking alloc, and have new type. */
375 if (typeptr == 0 || *typeptr == 0) /* We'll need to allocate one. */
377 ntype = alloc_type_copy (type);
381 else /* We have storage, but need to reset it. */
384 chain = TYPE_CHAIN (ntype);
386 TYPE_CHAIN (ntype) = chain;
389 TYPE_TARGET_TYPE (ntype) = type;
390 TYPE_REFERENCE_TYPE (type) = ntype;
392 /* FIXME! Assume the machine has only one representation for
393 references, and that it matches the (only) representation for
396 TYPE_LENGTH (ntype) =
397 gdbarch_ptr_bit (get_type_arch (type)) / TARGET_CHAR_BIT;
398 TYPE_CODE (ntype) = TYPE_CODE_REF;
400 if (!TYPE_REFERENCE_TYPE (type)) /* Remember it, if don't have one. */
401 TYPE_REFERENCE_TYPE (type) = ntype;
403 /* Update the length of all the other variants of this type. */
404 chain = TYPE_CHAIN (ntype);
405 while (chain != ntype)
407 TYPE_LENGTH (chain) = TYPE_LENGTH (ntype);
408 chain = TYPE_CHAIN (chain);
414 /* Same as above, but caller doesn't care about memory allocation
418 lookup_reference_type (struct type *type)
420 return make_reference_type (type, (struct type **) 0);
423 /* Lookup a function type that returns type TYPE. TYPEPTR, if
424 nonzero, points to a pointer to memory where the function type
425 should be stored. If *TYPEPTR is zero, update it to point to the
426 function type we return. We allocate new memory if needed. */
429 make_function_type (struct type *type, struct type **typeptr)
431 struct type *ntype; /* New type */
433 if (typeptr == 0 || *typeptr == 0) /* We'll need to allocate one. */
435 ntype = alloc_type_copy (type);
439 else /* We have storage, but need to reset it. */
445 TYPE_TARGET_TYPE (ntype) = type;
447 TYPE_LENGTH (ntype) = 1;
448 TYPE_CODE (ntype) = TYPE_CODE_FUNC;
450 INIT_FUNC_SPECIFIC (ntype);
456 /* Given a type TYPE, return a type of functions that return that type.
457 May need to construct such a type if this is the first use. */
460 lookup_function_type (struct type *type)
462 return make_function_type (type, (struct type **) 0);
465 /* Identify address space identifier by name --
466 return the integer flag defined in gdbtypes.h. */
468 address_space_name_to_int (struct gdbarch *gdbarch, char *space_identifier)
472 /* Check for known address space delimiters. */
473 if (!strcmp (space_identifier, "code"))
474 return TYPE_INSTANCE_FLAG_CODE_SPACE;
475 else if (!strcmp (space_identifier, "data"))
476 return TYPE_INSTANCE_FLAG_DATA_SPACE;
477 else if (gdbarch_address_class_name_to_type_flags_p (gdbarch)
478 && gdbarch_address_class_name_to_type_flags (gdbarch,
483 error (_("Unknown address space specifier: \"%s\""), space_identifier);
486 /* Identify address space identifier by integer flag as defined in
487 gdbtypes.h -- return the string version of the adress space name. */
490 address_space_int_to_name (struct gdbarch *gdbarch, int space_flag)
492 if (space_flag & TYPE_INSTANCE_FLAG_CODE_SPACE)
494 else if (space_flag & TYPE_INSTANCE_FLAG_DATA_SPACE)
496 else if ((space_flag & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL)
497 && gdbarch_address_class_type_flags_to_name_p (gdbarch))
498 return gdbarch_address_class_type_flags_to_name (gdbarch, space_flag);
503 /* Create a new type with instance flags NEW_FLAGS, based on TYPE.
505 If STORAGE is non-NULL, create the new type instance there.
506 STORAGE must be in the same obstack as TYPE. */
509 make_qualified_type (struct type *type, int new_flags,
510 struct type *storage)
517 if (TYPE_INSTANCE_FLAGS (ntype) == new_flags)
519 ntype = TYPE_CHAIN (ntype);
521 while (ntype != type);
523 /* Create a new type instance. */
525 ntype = alloc_type_instance (type);
528 /* If STORAGE was provided, it had better be in the same objfile
529 as TYPE. Otherwise, we can't link it into TYPE's cv chain:
530 if one objfile is freed and the other kept, we'd have
531 dangling pointers. */
532 gdb_assert (TYPE_OBJFILE (type) == TYPE_OBJFILE (storage));
535 TYPE_MAIN_TYPE (ntype) = TYPE_MAIN_TYPE (type);
536 TYPE_CHAIN (ntype) = ntype;
539 /* Pointers or references to the original type are not relevant to
541 TYPE_POINTER_TYPE (ntype) = (struct type *) 0;
542 TYPE_REFERENCE_TYPE (ntype) = (struct type *) 0;
544 /* Chain the new qualified type to the old type. */
545 TYPE_CHAIN (ntype) = TYPE_CHAIN (type);
546 TYPE_CHAIN (type) = ntype;
548 /* Now set the instance flags and return the new type. */
549 TYPE_INSTANCE_FLAGS (ntype) = new_flags;
551 /* Set length of new type to that of the original type. */
552 TYPE_LENGTH (ntype) = TYPE_LENGTH (type);
557 /* Make an address-space-delimited variant of a type -- a type that
558 is identical to the one supplied except that it has an address
559 space attribute attached to it (such as "code" or "data").
561 The space attributes "code" and "data" are for Harvard
562 architectures. The address space attributes are for architectures
563 which have alternately sized pointers or pointers with alternate
567 make_type_with_address_space (struct type *type, int space_flag)
569 int new_flags = ((TYPE_INSTANCE_FLAGS (type)
570 & ~(TYPE_INSTANCE_FLAG_CODE_SPACE
571 | TYPE_INSTANCE_FLAG_DATA_SPACE
572 | TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL))
575 return make_qualified_type (type, new_flags, NULL);
578 /* Make a "c-v" variant of a type -- a type that is identical to the
579 one supplied except that it may have const or volatile attributes
580 CNST is a flag for setting the const attribute
581 VOLTL is a flag for setting the volatile attribute
582 TYPE is the base type whose variant we are creating.
584 If TYPEPTR and *TYPEPTR are non-zero, then *TYPEPTR points to
585 storage to hold the new qualified type; *TYPEPTR and TYPE must be
586 in the same objfile. Otherwise, allocate fresh memory for the new
587 type whereever TYPE lives. If TYPEPTR is non-zero, set it to the
588 new type we construct. */
590 make_cv_type (int cnst, int voltl,
592 struct type **typeptr)
594 struct type *ntype; /* New type */
596 int new_flags = (TYPE_INSTANCE_FLAGS (type)
597 & ~(TYPE_INSTANCE_FLAG_CONST
598 | TYPE_INSTANCE_FLAG_VOLATILE));
601 new_flags |= TYPE_INSTANCE_FLAG_CONST;
604 new_flags |= TYPE_INSTANCE_FLAG_VOLATILE;
606 if (typeptr && *typeptr != NULL)
608 /* TYPE and *TYPEPTR must be in the same objfile. We can't have
609 a C-V variant chain that threads across objfiles: if one
610 objfile gets freed, then the other has a broken C-V chain.
612 This code used to try to copy over the main type from TYPE to
613 *TYPEPTR if they were in different objfiles, but that's
614 wrong, too: TYPE may have a field list or member function
615 lists, which refer to types of their own, etc. etc. The
616 whole shebang would need to be copied over recursively; you
617 can't have inter-objfile pointers. The only thing to do is
618 to leave stub types as stub types, and look them up afresh by
619 name each time you encounter them. */
620 gdb_assert (TYPE_OBJFILE (*typeptr) == TYPE_OBJFILE (type));
623 ntype = make_qualified_type (type, new_flags,
624 typeptr ? *typeptr : NULL);
632 /* Replace the contents of ntype with the type *type. This changes the
633 contents, rather than the pointer for TYPE_MAIN_TYPE (ntype); thus
634 the changes are propogated to all types in the TYPE_CHAIN.
636 In order to build recursive types, it's inevitable that we'll need
637 to update types in place --- but this sort of indiscriminate
638 smashing is ugly, and needs to be replaced with something more
639 controlled. TYPE_MAIN_TYPE is a step in this direction; it's not
640 clear if more steps are needed. */
642 replace_type (struct type *ntype, struct type *type)
646 /* These two types had better be in the same objfile. Otherwise,
647 the assignment of one type's main type structure to the other
648 will produce a type with references to objects (names; field
649 lists; etc.) allocated on an objfile other than its own. */
650 gdb_assert (TYPE_OBJFILE (ntype) == TYPE_OBJFILE (ntype));
652 *TYPE_MAIN_TYPE (ntype) = *TYPE_MAIN_TYPE (type);
654 /* The type length is not a part of the main type. Update it for
655 each type on the variant chain. */
659 /* Assert that this element of the chain has no address-class bits
660 set in its flags. Such type variants might have type lengths
661 which are supposed to be different from the non-address-class
662 variants. This assertion shouldn't ever be triggered because
663 symbol readers which do construct address-class variants don't
664 call replace_type(). */
665 gdb_assert (TYPE_ADDRESS_CLASS_ALL (chain) == 0);
667 TYPE_LENGTH (chain) = TYPE_LENGTH (type);
668 chain = TYPE_CHAIN (chain);
670 while (ntype != chain);
672 /* Assert that the two types have equivalent instance qualifiers.
673 This should be true for at least all of our debug readers. */
674 gdb_assert (TYPE_INSTANCE_FLAGS (ntype) == TYPE_INSTANCE_FLAGS (type));
677 /* Implement direct support for MEMBER_TYPE in GNU C++.
678 May need to construct such a type if this is the first use.
679 The TYPE is the type of the member. The DOMAIN is the type
680 of the aggregate that the member belongs to. */
683 lookup_memberptr_type (struct type *type, struct type *domain)
687 mtype = alloc_type_copy (type);
688 smash_to_memberptr_type (mtype, domain, type);
692 /* Return a pointer-to-method type, for a method of type TO_TYPE. */
695 lookup_methodptr_type (struct type *to_type)
699 mtype = alloc_type_copy (to_type);
700 smash_to_methodptr_type (mtype, to_type);
704 /* Allocate a stub method whose return type is TYPE. This apparently
705 happens for speed of symbol reading, since parsing out the
706 arguments to the method is cpu-intensive, the way we are doing it.
707 So, we will fill in arguments later. This always returns a fresh
711 allocate_stub_method (struct type *type)
715 mtype = alloc_type_copy (type);
716 TYPE_CODE (mtype) = TYPE_CODE_METHOD;
717 TYPE_LENGTH (mtype) = 1;
718 TYPE_STUB (mtype) = 1;
719 TYPE_TARGET_TYPE (mtype) = type;
720 /* _DOMAIN_TYPE (mtype) = unknown yet */
724 /* Create a range type using either a blank type supplied in
725 RESULT_TYPE, or creating a new type, inheriting the objfile from
728 Indices will be of type INDEX_TYPE, and will range from LOW_BOUND
729 to HIGH_BOUND, inclusive.
731 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
732 sure it is TYPE_CODE_UNDEF before we bash it into a range type? */
735 create_range_type (struct type *result_type, struct type *index_type,
736 LONGEST low_bound, LONGEST high_bound)
738 if (result_type == NULL)
739 result_type = alloc_type_copy (index_type);
740 TYPE_CODE (result_type) = TYPE_CODE_RANGE;
741 TYPE_TARGET_TYPE (result_type) = index_type;
742 if (TYPE_STUB (index_type))
743 TYPE_TARGET_STUB (result_type) = 1;
745 TYPE_LENGTH (result_type) = TYPE_LENGTH (check_typedef (index_type));
746 TYPE_RANGE_DATA (result_type) = (struct range_bounds *)
747 TYPE_ZALLOC (result_type, sizeof (struct range_bounds));
748 TYPE_LOW_BOUND (result_type) = low_bound;
749 TYPE_HIGH_BOUND (result_type) = high_bound;
752 TYPE_UNSIGNED (result_type) = 1;
757 /* Set *LOWP and *HIGHP to the lower and upper bounds of discrete type
758 TYPE. Return 1 if type is a range type, 0 if it is discrete (and
759 bounds will fit in LONGEST), or -1 otherwise. */
762 get_discrete_bounds (struct type *type, LONGEST *lowp, LONGEST *highp)
764 CHECK_TYPEDEF (type);
765 switch (TYPE_CODE (type))
767 case TYPE_CODE_RANGE:
768 *lowp = TYPE_LOW_BOUND (type);
769 *highp = TYPE_HIGH_BOUND (type);
772 if (TYPE_NFIELDS (type) > 0)
774 /* The enums may not be sorted by value, so search all
778 *lowp = *highp = TYPE_FIELD_BITPOS (type, 0);
779 for (i = 0; i < TYPE_NFIELDS (type); i++)
781 if (TYPE_FIELD_BITPOS (type, i) < *lowp)
782 *lowp = TYPE_FIELD_BITPOS (type, i);
783 if (TYPE_FIELD_BITPOS (type, i) > *highp)
784 *highp = TYPE_FIELD_BITPOS (type, i);
787 /* Set unsigned indicator if warranted. */
790 TYPE_UNSIGNED (type) = 1;
804 if (TYPE_LENGTH (type) > sizeof (LONGEST)) /* Too big */
806 if (!TYPE_UNSIGNED (type))
808 *lowp = -(1 << (TYPE_LENGTH (type) * TARGET_CHAR_BIT - 1));
812 /* ... fall through for unsigned ints ... */
815 /* This round-about calculation is to avoid shifting by
816 TYPE_LENGTH (type) * TARGET_CHAR_BIT, which will not work
817 if TYPE_LENGTH (type) == sizeof (LONGEST). */
818 *highp = 1 << (TYPE_LENGTH (type) * TARGET_CHAR_BIT - 1);
819 *highp = (*highp - 1) | *highp;
826 /* Assuming TYPE is a simple, non-empty array type, compute its upper
827 and lower bound. Save the low bound into LOW_BOUND if not NULL.
828 Save the high bound into HIGH_BOUND if not NULL.
830 Return 1 if the operation was successful. Return zero otherwise,
831 in which case the values of LOW_BOUND and HIGH_BOUNDS are unmodified.
833 We now simply use get_discrete_bounds call to get the values
834 of the low and high bounds.
835 get_discrete_bounds can return three values:
836 1, meaning that index is a range,
837 0, meaning that index is a discrete type,
838 or -1 for failure. */
841 get_array_bounds (struct type *type, LONGEST *low_bound, LONGEST *high_bound)
843 struct type *index = TYPE_INDEX_TYPE (type);
851 res = get_discrete_bounds (index, &low, &high);
855 /* Check if the array bounds are undefined. */
857 && ((low_bound && TYPE_ARRAY_LOWER_BOUND_IS_UNDEFINED (type))
858 || (high_bound && TYPE_ARRAY_UPPER_BOUND_IS_UNDEFINED (type))))
870 /* Create an array type using either a blank type supplied in
871 RESULT_TYPE, or creating a new type, inheriting the objfile from
874 Elements will be of type ELEMENT_TYPE, the indices will be of type
877 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
878 sure it is TYPE_CODE_UNDEF before we bash it into an array
882 create_array_type (struct type *result_type,
883 struct type *element_type,
884 struct type *range_type)
886 LONGEST low_bound, high_bound;
888 if (result_type == NULL)
889 result_type = alloc_type_copy (range_type);
891 TYPE_CODE (result_type) = TYPE_CODE_ARRAY;
892 TYPE_TARGET_TYPE (result_type) = element_type;
893 if (get_discrete_bounds (range_type, &low_bound, &high_bound) < 0)
894 low_bound = high_bound = 0;
895 CHECK_TYPEDEF (element_type);
896 /* Be careful when setting the array length. Ada arrays can be
897 empty arrays with the high_bound being smaller than the low_bound.
898 In such cases, the array length should be zero. */
899 if (high_bound < low_bound)
900 TYPE_LENGTH (result_type) = 0;
902 TYPE_LENGTH (result_type) =
903 TYPE_LENGTH (element_type) * (high_bound - low_bound + 1);
904 TYPE_NFIELDS (result_type) = 1;
905 TYPE_FIELDS (result_type) =
906 (struct field *) TYPE_ZALLOC (result_type, sizeof (struct field));
907 TYPE_INDEX_TYPE (result_type) = range_type;
908 TYPE_VPTR_FIELDNO (result_type) = -1;
910 /* TYPE_FLAG_TARGET_STUB will take care of zero length arrays. */
911 if (TYPE_LENGTH (result_type) == 0)
912 TYPE_TARGET_STUB (result_type) = 1;
918 lookup_array_range_type (struct type *element_type,
919 int low_bound, int high_bound)
921 struct gdbarch *gdbarch = get_type_arch (element_type);
922 struct type *index_type = builtin_type (gdbarch)->builtin_int;
923 struct type *range_type
924 = create_range_type (NULL, index_type, low_bound, high_bound);
926 return create_array_type (NULL, element_type, range_type);
929 /* Create a string type using either a blank type supplied in
930 RESULT_TYPE, or creating a new type. String types are similar
931 enough to array of char types that we can use create_array_type to
932 build the basic type and then bash it into a string type.
934 For fixed length strings, the range type contains 0 as the lower
935 bound and the length of the string minus one as the upper bound.
937 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
938 sure it is TYPE_CODE_UNDEF before we bash it into a string
942 create_string_type (struct type *result_type,
943 struct type *string_char_type,
944 struct type *range_type)
946 result_type = create_array_type (result_type,
949 TYPE_CODE (result_type) = TYPE_CODE_STRING;
954 lookup_string_range_type (struct type *string_char_type,
955 int low_bound, int high_bound)
957 struct type *result_type;
959 result_type = lookup_array_range_type (string_char_type,
960 low_bound, high_bound);
961 TYPE_CODE (result_type) = TYPE_CODE_STRING;
966 create_set_type (struct type *result_type, struct type *domain_type)
968 if (result_type == NULL)
969 result_type = alloc_type_copy (domain_type);
971 TYPE_CODE (result_type) = TYPE_CODE_SET;
972 TYPE_NFIELDS (result_type) = 1;
973 TYPE_FIELDS (result_type) = TYPE_ZALLOC (result_type, sizeof (struct field));
975 if (!TYPE_STUB (domain_type))
977 LONGEST low_bound, high_bound, bit_length;
979 if (get_discrete_bounds (domain_type, &low_bound, &high_bound) < 0)
980 low_bound = high_bound = 0;
981 bit_length = high_bound - low_bound + 1;
982 TYPE_LENGTH (result_type)
983 = (bit_length + TARGET_CHAR_BIT - 1) / TARGET_CHAR_BIT;
985 TYPE_UNSIGNED (result_type) = 1;
987 TYPE_FIELD_TYPE (result_type, 0) = domain_type;
992 /* Convert ARRAY_TYPE to a vector type. This may modify ARRAY_TYPE
993 and any array types nested inside it. */
996 make_vector_type (struct type *array_type)
998 struct type *inner_array, *elt_type;
1001 /* Find the innermost array type, in case the array is
1002 multi-dimensional. */
1003 inner_array = array_type;
1004 while (TYPE_CODE (TYPE_TARGET_TYPE (inner_array)) == TYPE_CODE_ARRAY)
1005 inner_array = TYPE_TARGET_TYPE (inner_array);
1007 elt_type = TYPE_TARGET_TYPE (inner_array);
1008 if (TYPE_CODE (elt_type) == TYPE_CODE_INT)
1010 flags = TYPE_INSTANCE_FLAGS (elt_type) | TYPE_INSTANCE_FLAG_NOTTEXT;
1011 elt_type = make_qualified_type (elt_type, flags, NULL);
1012 TYPE_TARGET_TYPE (inner_array) = elt_type;
1015 TYPE_VECTOR (array_type) = 1;
1019 init_vector_type (struct type *elt_type, int n)
1021 struct type *array_type;
1023 array_type = lookup_array_range_type (elt_type, 0, n - 1);
1024 make_vector_type (array_type);
1028 /* Smash TYPE to be a type of pointers to members of DOMAIN with type
1029 TO_TYPE. A member pointer is a wierd thing -- it amounts to a
1030 typed offset into a struct, e.g. "an int at offset 8". A MEMBER
1031 TYPE doesn't include the offset (that's the value of the MEMBER
1032 itself), but does include the structure type into which it points
1035 When "smashing" the type, we preserve the objfile that the old type
1036 pointed to, since we aren't changing where the type is actually
1040 smash_to_memberptr_type (struct type *type, struct type *domain,
1041 struct type *to_type)
1044 TYPE_TARGET_TYPE (type) = to_type;
1045 TYPE_DOMAIN_TYPE (type) = domain;
1046 /* Assume that a data member pointer is the same size as a normal
1049 = gdbarch_ptr_bit (get_type_arch (to_type)) / TARGET_CHAR_BIT;
1050 TYPE_CODE (type) = TYPE_CODE_MEMBERPTR;
1053 /* Smash TYPE to be a type of pointer to methods type TO_TYPE.
1055 When "smashing" the type, we preserve the objfile that the old type
1056 pointed to, since we aren't changing where the type is actually
1060 smash_to_methodptr_type (struct type *type, struct type *to_type)
1063 TYPE_TARGET_TYPE (type) = to_type;
1064 TYPE_DOMAIN_TYPE (type) = TYPE_DOMAIN_TYPE (to_type);
1065 TYPE_LENGTH (type) = cplus_method_ptr_size (to_type);
1066 TYPE_CODE (type) = TYPE_CODE_METHODPTR;
1069 /* Smash TYPE to be a type of method of DOMAIN with type TO_TYPE.
1070 METHOD just means `function that gets an extra "this" argument'.
1072 When "smashing" the type, we preserve the objfile that the old type
1073 pointed to, since we aren't changing where the type is actually
1077 smash_to_method_type (struct type *type, struct type *domain,
1078 struct type *to_type, struct field *args,
1079 int nargs, int varargs)
1082 TYPE_TARGET_TYPE (type) = to_type;
1083 TYPE_DOMAIN_TYPE (type) = domain;
1084 TYPE_FIELDS (type) = args;
1085 TYPE_NFIELDS (type) = nargs;
1087 TYPE_VARARGS (type) = 1;
1088 TYPE_LENGTH (type) = 1; /* In practice, this is never needed. */
1089 TYPE_CODE (type) = TYPE_CODE_METHOD;
1092 /* Return a typename for a struct/union/enum type without "struct ",
1093 "union ", or "enum ". If the type has a NULL name, return NULL. */
1096 type_name_no_tag (const struct type *type)
1098 if (TYPE_TAG_NAME (type) != NULL)
1099 return TYPE_TAG_NAME (type);
1101 /* Is there code which expects this to return the name if there is
1102 no tag name? My guess is that this is mainly used for C++ in
1103 cases where the two will always be the same. */
1104 return TYPE_NAME (type);
1107 /* A wrapper of type_name_no_tag which calls error if the type is anonymous.
1108 Since GCC PR debug/47510 DWARF provides associated information to detect the
1109 anonymous class linkage name from its typedef.
1111 Parameter TYPE should not yet have CHECK_TYPEDEF applied, this function will
1115 type_name_no_tag_or_error (struct type *type)
1117 struct type *saved_type = type;
1119 struct objfile *objfile;
1121 CHECK_TYPEDEF (type);
1123 name = type_name_no_tag (type);
1127 name = type_name_no_tag (saved_type);
1128 objfile = TYPE_OBJFILE (saved_type);
1129 error (_("Invalid anonymous type %s [in module %s], GCC PR debug/47510 bug?"),
1130 name ? name : "<anonymous>", objfile ? objfile->name : "<arch>");
1133 /* Lookup a typedef or primitive type named NAME, visible in lexical
1134 block BLOCK. If NOERR is nonzero, return zero if NAME is not
1135 suitably defined. */
1138 lookup_typename (const struct language_defn *language,
1139 struct gdbarch *gdbarch, const char *name,
1140 const struct block *block, int noerr)
1145 sym = lookup_symbol (name, block, VAR_DOMAIN, 0);
1146 if (sym == NULL || SYMBOL_CLASS (sym) != LOC_TYPEDEF)
1148 tmp = language_lookup_primitive_type_by_name (language, gdbarch, name);
1153 else if (!tmp && noerr)
1159 error (_("No type named %s."), name);
1162 return (SYMBOL_TYPE (sym));
1166 lookup_unsigned_typename (const struct language_defn *language,
1167 struct gdbarch *gdbarch, char *name)
1169 char *uns = alloca (strlen (name) + 10);
1171 strcpy (uns, "unsigned ");
1172 strcpy (uns + 9, name);
1173 return lookup_typename (language, gdbarch, uns, (struct block *) NULL, 0);
1177 lookup_signed_typename (const struct language_defn *language,
1178 struct gdbarch *gdbarch, char *name)
1181 char *uns = alloca (strlen (name) + 8);
1183 strcpy (uns, "signed ");
1184 strcpy (uns + 7, name);
1185 t = lookup_typename (language, gdbarch, uns, (struct block *) NULL, 1);
1186 /* If we don't find "signed FOO" just try again with plain "FOO". */
1189 return lookup_typename (language, gdbarch, name, (struct block *) NULL, 0);
1192 /* Lookup a structure type named "struct NAME",
1193 visible in lexical block BLOCK. */
1196 lookup_struct (const char *name, struct block *block)
1200 sym = lookup_symbol (name, block, STRUCT_DOMAIN, 0);
1204 error (_("No struct type named %s."), name);
1206 if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_STRUCT)
1208 error (_("This context has class, union or enum %s, not a struct."),
1211 return (SYMBOL_TYPE (sym));
1214 /* Lookup a union type named "union NAME",
1215 visible in lexical block BLOCK. */
1218 lookup_union (const char *name, struct block *block)
1223 sym = lookup_symbol (name, block, STRUCT_DOMAIN, 0);
1226 error (_("No union type named %s."), name);
1228 t = SYMBOL_TYPE (sym);
1230 if (TYPE_CODE (t) == TYPE_CODE_UNION)
1233 /* If we get here, it's not a union. */
1234 error (_("This context has class, struct or enum %s, not a union."),
1239 /* Lookup an enum type named "enum NAME",
1240 visible in lexical block BLOCK. */
1243 lookup_enum (const char *name, struct block *block)
1247 sym = lookup_symbol (name, block, STRUCT_DOMAIN, 0);
1250 error (_("No enum type named %s."), name);
1252 if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_ENUM)
1254 error (_("This context has class, struct or union %s, not an enum."),
1257 return (SYMBOL_TYPE (sym));
1260 /* Lookup a template type named "template NAME<TYPE>",
1261 visible in lexical block BLOCK. */
1264 lookup_template_type (char *name, struct type *type,
1265 struct block *block)
1268 char *nam = (char *)
1269 alloca (strlen (name) + strlen (TYPE_NAME (type)) + 4);
1273 strcat (nam, TYPE_NAME (type));
1274 strcat (nam, " >"); /* FIXME, extra space still introduced in gcc? */
1276 sym = lookup_symbol (nam, block, VAR_DOMAIN, 0);
1280 error (_("No template type named %s."), name);
1282 if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_STRUCT)
1284 error (_("This context has class, union or enum %s, not a struct."),
1287 return (SYMBOL_TYPE (sym));
1290 /* Given a type TYPE, lookup the type of the component of type named
1293 TYPE can be either a struct or union, or a pointer or reference to
1294 a struct or union. If it is a pointer or reference, its target
1295 type is automatically used. Thus '.' and '->' are interchangable,
1296 as specified for the definitions of the expression element types
1297 STRUCTOP_STRUCT and STRUCTOP_PTR.
1299 If NOERR is nonzero, return zero if NAME is not suitably defined.
1300 If NAME is the name of a baseclass type, return that type. */
1303 lookup_struct_elt_type (struct type *type, char *name, int noerr)
1310 CHECK_TYPEDEF (type);
1311 if (TYPE_CODE (type) != TYPE_CODE_PTR
1312 && TYPE_CODE (type) != TYPE_CODE_REF)
1314 type = TYPE_TARGET_TYPE (type);
1317 if (TYPE_CODE (type) != TYPE_CODE_STRUCT
1318 && TYPE_CODE (type) != TYPE_CODE_UNION)
1320 typename = type_to_string (type);
1321 make_cleanup (xfree, typename);
1322 error (_("Type %s is not a structure or union type."), typename);
1326 /* FIXME: This change put in by Michael seems incorrect for the case
1327 where the structure tag name is the same as the member name.
1328 I.e. when doing "ptype bell->bar" for "struct foo { int bar; int
1329 foo; } bell;" Disabled by fnf. */
1333 typename = type_name_no_tag (type);
1334 if (typename != NULL && strcmp (typename, name) == 0)
1339 for (i = TYPE_NFIELDS (type) - 1; i >= TYPE_N_BASECLASSES (type); i--)
1341 char *t_field_name = TYPE_FIELD_NAME (type, i);
1343 if (t_field_name && (strcmp_iw (t_field_name, name) == 0))
1345 return TYPE_FIELD_TYPE (type, i);
1347 else if (!t_field_name || *t_field_name == '\0')
1349 struct type *subtype
1350 = lookup_struct_elt_type (TYPE_FIELD_TYPE (type, i), name, 1);
1352 if (subtype != NULL)
1357 /* OK, it's not in this class. Recursively check the baseclasses. */
1358 for (i = TYPE_N_BASECLASSES (type) - 1; i >= 0; i--)
1362 t = lookup_struct_elt_type (TYPE_BASECLASS (type, i), name, 1);
1374 typename = type_to_string (type);
1375 make_cleanup (xfree, typename);
1376 error (_("Type %s has no component named %s."), typename, name);
1379 /* Lookup the vptr basetype/fieldno values for TYPE.
1380 If found store vptr_basetype in *BASETYPEP if non-NULL, and return
1381 vptr_fieldno. Also, if found and basetype is from the same objfile,
1383 If not found, return -1 and ignore BASETYPEP.
1384 Callers should be aware that in some cases (for example,
1385 the type or one of its baseclasses is a stub type and we are
1386 debugging a .o file, or the compiler uses DWARF-2 and is not GCC),
1387 this function will not be able to find the
1388 virtual function table pointer, and vptr_fieldno will remain -1 and
1389 vptr_basetype will remain NULL or incomplete. */
1392 get_vptr_fieldno (struct type *type, struct type **basetypep)
1394 CHECK_TYPEDEF (type);
1396 if (TYPE_VPTR_FIELDNO (type) < 0)
1400 /* We must start at zero in case the first (and only) baseclass
1401 is virtual (and hence we cannot share the table pointer). */
1402 for (i = 0; i < TYPE_N_BASECLASSES (type); i++)
1404 struct type *baseclass = check_typedef (TYPE_BASECLASS (type, i));
1406 struct type *basetype;
1408 fieldno = get_vptr_fieldno (baseclass, &basetype);
1411 /* If the type comes from a different objfile we can't cache
1412 it, it may have a different lifetime. PR 2384 */
1413 if (TYPE_OBJFILE (type) == TYPE_OBJFILE (basetype))
1415 TYPE_VPTR_FIELDNO (type) = fieldno;
1416 TYPE_VPTR_BASETYPE (type) = basetype;
1419 *basetypep = basetype;
1430 *basetypep = TYPE_VPTR_BASETYPE (type);
1431 return TYPE_VPTR_FIELDNO (type);
1436 stub_noname_complaint (void)
1438 complaint (&symfile_complaints, _("stub type has NULL name"));
1441 /* Find the real type of TYPE. This function returns the real type,
1442 after removing all layers of typedefs, and completing opaque or stub
1443 types. Completion changes the TYPE argument, but stripping of
1446 Instance flags (e.g. const/volatile) are preserved as typedefs are
1447 stripped. If necessary a new qualified form of the underlying type
1450 NOTE: This will return a typedef if TYPE_TARGET_TYPE for the typedef has
1451 not been computed and we're either in the middle of reading symbols, or
1452 there was no name for the typedef in the debug info.
1454 NOTE: Lookup of opaque types can throw errors for invalid symbol files.
1455 QUITs in the symbol reading code can also throw.
1456 Thus this function can throw an exception.
1458 If TYPE is a TYPE_CODE_TYPEDEF, its length is updated to the length of
1461 If this is a stubbed struct (i.e. declared as struct foo *), see if
1462 we can find a full definition in some other file. If so, copy this
1463 definition, so we can use it in future. There used to be a comment
1464 (but not any code) that if we don't find a full definition, we'd
1465 set a flag so we don't spend time in the future checking the same
1466 type. That would be a mistake, though--we might load in more
1467 symbols which contain a full definition for the type. */
1470 check_typedef (struct type *type)
1472 struct type *orig_type = type;
1473 /* While we're removing typedefs, we don't want to lose qualifiers.
1474 E.g., const/volatile. */
1475 int instance_flags = TYPE_INSTANCE_FLAGS (type);
1479 while (TYPE_CODE (type) == TYPE_CODE_TYPEDEF)
1481 if (!TYPE_TARGET_TYPE (type))
1486 /* It is dangerous to call lookup_symbol if we are currently
1487 reading a symtab. Infinite recursion is one danger. */
1488 if (currently_reading_symtab)
1489 return make_qualified_type (type, instance_flags, NULL);
1491 name = type_name_no_tag (type);
1492 /* FIXME: shouldn't we separately check the TYPE_NAME and
1493 the TYPE_TAG_NAME, and look in STRUCT_DOMAIN and/or
1494 VAR_DOMAIN as appropriate? (this code was written before
1495 TYPE_NAME and TYPE_TAG_NAME were separate). */
1498 stub_noname_complaint ();
1499 return make_qualified_type (type, instance_flags, NULL);
1501 sym = lookup_symbol (name, 0, STRUCT_DOMAIN, 0);
1503 TYPE_TARGET_TYPE (type) = SYMBOL_TYPE (sym);
1504 else /* TYPE_CODE_UNDEF */
1505 TYPE_TARGET_TYPE (type) = alloc_type_arch (get_type_arch (type));
1507 type = TYPE_TARGET_TYPE (type);
1509 /* Preserve the instance flags as we traverse down the typedef chain.
1511 Handling address spaces/classes is nasty, what do we do if there's a
1513 E.g., what if an outer typedef marks the type as class_1 and an inner
1514 typedef marks the type as class_2?
1515 This is the wrong place to do such error checking. We leave it to
1516 the code that created the typedef in the first place to flag the
1517 error. We just pick the outer address space (akin to letting the
1518 outer cast in a chain of casting win), instead of assuming
1519 "it can't happen". */
1521 const int ALL_SPACES = (TYPE_INSTANCE_FLAG_CODE_SPACE
1522 | TYPE_INSTANCE_FLAG_DATA_SPACE);
1523 const int ALL_CLASSES = TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL;
1524 int new_instance_flags = TYPE_INSTANCE_FLAGS (type);
1526 /* Treat code vs data spaces and address classes separately. */
1527 if ((instance_flags & ALL_SPACES) != 0)
1528 new_instance_flags &= ~ALL_SPACES;
1529 if ((instance_flags & ALL_CLASSES) != 0)
1530 new_instance_flags &= ~ALL_CLASSES;
1532 instance_flags |= new_instance_flags;
1536 /* If this is a struct/class/union with no fields, then check
1537 whether a full definition exists somewhere else. This is for
1538 systems where a type definition with no fields is issued for such
1539 types, instead of identifying them as stub types in the first
1542 if (TYPE_IS_OPAQUE (type)
1543 && opaque_type_resolution
1544 && !currently_reading_symtab)
1546 char *name = type_name_no_tag (type);
1547 struct type *newtype;
1551 stub_noname_complaint ();
1552 return make_qualified_type (type, instance_flags, NULL);
1554 newtype = lookup_transparent_type (name);
1558 /* If the resolved type and the stub are in the same
1559 objfile, then replace the stub type with the real deal.
1560 But if they're in separate objfiles, leave the stub
1561 alone; we'll just look up the transparent type every time
1562 we call check_typedef. We can't create pointers between
1563 types allocated to different objfiles, since they may
1564 have different lifetimes. Trying to copy NEWTYPE over to
1565 TYPE's objfile is pointless, too, since you'll have to
1566 move over any other types NEWTYPE refers to, which could
1567 be an unbounded amount of stuff. */
1568 if (TYPE_OBJFILE (newtype) == TYPE_OBJFILE (type))
1569 type = make_qualified_type (newtype,
1570 TYPE_INSTANCE_FLAGS (type),
1576 /* Otherwise, rely on the stub flag being set for opaque/stubbed
1578 else if (TYPE_STUB (type) && !currently_reading_symtab)
1580 char *name = type_name_no_tag (type);
1581 /* FIXME: shouldn't we separately check the TYPE_NAME and the
1582 TYPE_TAG_NAME, and look in STRUCT_DOMAIN and/or VAR_DOMAIN
1583 as appropriate? (this code was written before TYPE_NAME and
1584 TYPE_TAG_NAME were separate). */
1589 stub_noname_complaint ();
1590 return make_qualified_type (type, instance_flags, NULL);
1592 sym = lookup_symbol (name, 0, STRUCT_DOMAIN, 0);
1595 /* Same as above for opaque types, we can replace the stub
1596 with the complete type only if they are in the same
1598 if (TYPE_OBJFILE (SYMBOL_TYPE(sym)) == TYPE_OBJFILE (type))
1599 type = make_qualified_type (SYMBOL_TYPE (sym),
1600 TYPE_INSTANCE_FLAGS (type),
1603 type = SYMBOL_TYPE (sym);
1607 if (TYPE_TARGET_STUB (type))
1609 struct type *range_type;
1610 struct type *target_type = check_typedef (TYPE_TARGET_TYPE (type));
1612 if (TYPE_STUB (target_type) || TYPE_TARGET_STUB (target_type))
1614 /* Nothing we can do. */
1616 else if (TYPE_CODE (type) == TYPE_CODE_ARRAY
1617 && TYPE_NFIELDS (type) == 1
1618 && (TYPE_CODE (range_type = TYPE_INDEX_TYPE (type))
1619 == TYPE_CODE_RANGE))
1621 /* Now recompute the length of the array type, based on its
1622 number of elements and the target type's length.
1623 Watch out for Ada null Ada arrays where the high bound
1624 is smaller than the low bound. */
1625 const LONGEST low_bound = TYPE_LOW_BOUND (range_type);
1626 const LONGEST high_bound = TYPE_HIGH_BOUND (range_type);
1629 if (high_bound < low_bound)
1633 /* For now, we conservatively take the array length to be 0
1634 if its length exceeds UINT_MAX. The code below assumes
1635 that for x < 0, (ULONGEST) x == -x + ULONGEST_MAX + 1,
1636 which is technically not guaranteed by C, but is usually true
1637 (because it would be true if x were unsigned with its
1638 high-order bit on). It uses the fact that
1639 high_bound-low_bound is always representable in
1640 ULONGEST and that if high_bound-low_bound+1 overflows,
1641 it overflows to 0. We must change these tests if we
1642 decide to increase the representation of TYPE_LENGTH
1643 from unsigned int to ULONGEST. */
1644 ULONGEST ulow = low_bound, uhigh = high_bound;
1645 ULONGEST tlen = TYPE_LENGTH (target_type);
1647 len = tlen * (uhigh - ulow + 1);
1648 if (tlen == 0 || (len / tlen - 1 + ulow) != uhigh
1652 TYPE_LENGTH (type) = len;
1653 TYPE_TARGET_STUB (type) = 0;
1655 else if (TYPE_CODE (type) == TYPE_CODE_RANGE)
1657 TYPE_LENGTH (type) = TYPE_LENGTH (target_type);
1658 TYPE_TARGET_STUB (type) = 0;
1662 type = make_qualified_type (type, instance_flags, NULL);
1664 /* Cache TYPE_LENGTH for future use. */
1665 TYPE_LENGTH (orig_type) = TYPE_LENGTH (type);
1670 /* Parse a type expression in the string [P..P+LENGTH). If an error
1671 occurs, silently return a void type. */
1673 static struct type *
1674 safe_parse_type (struct gdbarch *gdbarch, char *p, int length)
1676 struct ui_file *saved_gdb_stderr;
1677 struct type *type = NULL; /* Initialize to keep gcc happy. */
1678 volatile struct gdb_exception except;
1680 /* Suppress error messages. */
1681 saved_gdb_stderr = gdb_stderr;
1682 gdb_stderr = ui_file_new ();
1684 /* Call parse_and_eval_type() without fear of longjmp()s. */
1685 TRY_CATCH (except, RETURN_MASK_ERROR)
1687 type = parse_and_eval_type (p, length);
1690 if (except.reason < 0)
1691 type = builtin_type (gdbarch)->builtin_void;
1693 /* Stop suppressing error messages. */
1694 ui_file_delete (gdb_stderr);
1695 gdb_stderr = saved_gdb_stderr;
1700 /* Ugly hack to convert method stubs into method types.
1702 He ain't kiddin'. This demangles the name of the method into a
1703 string including argument types, parses out each argument type,
1704 generates a string casting a zero to that type, evaluates the
1705 string, and stuffs the resulting type into an argtype vector!!!
1706 Then it knows the type of the whole function (including argument
1707 types for overloading), which info used to be in the stab's but was
1708 removed to hack back the space required for them. */
1711 check_stub_method (struct type *type, int method_id, int signature_id)
1713 struct gdbarch *gdbarch = get_type_arch (type);
1715 char *mangled_name = gdb_mangle_name (type, method_id, signature_id);
1716 char *demangled_name = cplus_demangle (mangled_name,
1717 DMGL_PARAMS | DMGL_ANSI);
1718 char *argtypetext, *p;
1719 int depth = 0, argcount = 1;
1720 struct field *argtypes;
1723 /* Make sure we got back a function string that we can use. */
1725 p = strchr (demangled_name, '(');
1729 if (demangled_name == NULL || p == NULL)
1730 error (_("Internal: Cannot demangle mangled name `%s'."),
1733 /* Now, read in the parameters that define this type. */
1738 if (*p == '(' || *p == '<')
1742 else if (*p == ')' || *p == '>')
1746 else if (*p == ',' && depth == 0)
1754 /* If we read one argument and it was ``void'', don't count it. */
1755 if (strncmp (argtypetext, "(void)", 6) == 0)
1758 /* We need one extra slot, for the THIS pointer. */
1760 argtypes = (struct field *)
1761 TYPE_ALLOC (type, (argcount + 1) * sizeof (struct field));
1764 /* Add THIS pointer for non-static methods. */
1765 f = TYPE_FN_FIELDLIST1 (type, method_id);
1766 if (TYPE_FN_FIELD_STATIC_P (f, signature_id))
1770 argtypes[0].type = lookup_pointer_type (type);
1774 if (*p != ')') /* () means no args, skip while. */
1779 if (depth <= 0 && (*p == ',' || *p == ')'))
1781 /* Avoid parsing of ellipsis, they will be handled below.
1782 Also avoid ``void'' as above. */
1783 if (strncmp (argtypetext, "...", p - argtypetext) != 0
1784 && strncmp (argtypetext, "void", p - argtypetext) != 0)
1786 argtypes[argcount].type =
1787 safe_parse_type (gdbarch, argtypetext, p - argtypetext);
1790 argtypetext = p + 1;
1793 if (*p == '(' || *p == '<')
1797 else if (*p == ')' || *p == '>')
1806 TYPE_FN_FIELD_PHYSNAME (f, signature_id) = mangled_name;
1808 /* Now update the old "stub" type into a real type. */
1809 mtype = TYPE_FN_FIELD_TYPE (f, signature_id);
1810 TYPE_DOMAIN_TYPE (mtype) = type;
1811 TYPE_FIELDS (mtype) = argtypes;
1812 TYPE_NFIELDS (mtype) = argcount;
1813 TYPE_STUB (mtype) = 0;
1814 TYPE_FN_FIELD_STUB (f, signature_id) = 0;
1816 TYPE_VARARGS (mtype) = 1;
1818 xfree (demangled_name);
1821 /* This is the external interface to check_stub_method, above. This
1822 function unstubs all of the signatures for TYPE's METHOD_ID method
1823 name. After calling this function TYPE_FN_FIELD_STUB will be
1824 cleared for each signature and TYPE_FN_FIELDLIST_NAME will be
1827 This function unfortunately can not die until stabs do. */
1830 check_stub_method_group (struct type *type, int method_id)
1832 int len = TYPE_FN_FIELDLIST_LENGTH (type, method_id);
1833 struct fn_field *f = TYPE_FN_FIELDLIST1 (type, method_id);
1834 int j, found_stub = 0;
1836 for (j = 0; j < len; j++)
1837 if (TYPE_FN_FIELD_STUB (f, j))
1840 check_stub_method (type, method_id, j);
1843 /* GNU v3 methods with incorrect names were corrected when we read
1844 in type information, because it was cheaper to do it then. The
1845 only GNU v2 methods with incorrect method names are operators and
1846 destructors; destructors were also corrected when we read in type
1849 Therefore the only thing we need to handle here are v2 operator
1851 if (found_stub && strncmp (TYPE_FN_FIELD_PHYSNAME (f, 0), "_Z", 2) != 0)
1854 char dem_opname[256];
1856 ret = cplus_demangle_opname (TYPE_FN_FIELDLIST_NAME (type,
1858 dem_opname, DMGL_ANSI);
1860 ret = cplus_demangle_opname (TYPE_FN_FIELDLIST_NAME (type,
1864 TYPE_FN_FIELDLIST_NAME (type, method_id) = xstrdup (dem_opname);
1868 /* Ensure it is in .rodata (if available) by workarounding GCC PR 44690. */
1869 const struct cplus_struct_type cplus_struct_default = { };
1872 allocate_cplus_struct_type (struct type *type)
1874 if (HAVE_CPLUS_STRUCT (type))
1875 /* Structure was already allocated. Nothing more to do. */
1878 TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_CPLUS_STUFF;
1879 TYPE_RAW_CPLUS_SPECIFIC (type) = (struct cplus_struct_type *)
1880 TYPE_ALLOC (type, sizeof (struct cplus_struct_type));
1881 *(TYPE_RAW_CPLUS_SPECIFIC (type)) = cplus_struct_default;
1884 const struct gnat_aux_type gnat_aux_default =
1887 /* Set the TYPE's type-specific kind to TYPE_SPECIFIC_GNAT_STUFF,
1888 and allocate the associated gnat-specific data. The gnat-specific
1889 data is also initialized to gnat_aux_default. */
1891 allocate_gnat_aux_type (struct type *type)
1893 TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_GNAT_STUFF;
1894 TYPE_GNAT_SPECIFIC (type) = (struct gnat_aux_type *)
1895 TYPE_ALLOC (type, sizeof (struct gnat_aux_type));
1896 *(TYPE_GNAT_SPECIFIC (type)) = gnat_aux_default;
1900 /* Helper function to initialize the standard scalar types.
1902 If NAME is non-NULL, then we make a copy of the string pointed
1903 to by name in the objfile_obstack for that objfile, and initialize
1904 the type name to that copy. There are places (mipsread.c in particular),
1905 where init_type is called with a NULL value for NAME). */
1908 init_type (enum type_code code, int length, int flags,
1909 char *name, struct objfile *objfile)
1913 type = alloc_type (objfile);
1914 TYPE_CODE (type) = code;
1915 TYPE_LENGTH (type) = length;
1917 gdb_assert (!(flags & (TYPE_FLAG_MIN - 1)));
1918 if (flags & TYPE_FLAG_UNSIGNED)
1919 TYPE_UNSIGNED (type) = 1;
1920 if (flags & TYPE_FLAG_NOSIGN)
1921 TYPE_NOSIGN (type) = 1;
1922 if (flags & TYPE_FLAG_STUB)
1923 TYPE_STUB (type) = 1;
1924 if (flags & TYPE_FLAG_TARGET_STUB)
1925 TYPE_TARGET_STUB (type) = 1;
1926 if (flags & TYPE_FLAG_STATIC)
1927 TYPE_STATIC (type) = 1;
1928 if (flags & TYPE_FLAG_PROTOTYPED)
1929 TYPE_PROTOTYPED (type) = 1;
1930 if (flags & TYPE_FLAG_INCOMPLETE)
1931 TYPE_INCOMPLETE (type) = 1;
1932 if (flags & TYPE_FLAG_VARARGS)
1933 TYPE_VARARGS (type) = 1;
1934 if (flags & TYPE_FLAG_VECTOR)
1935 TYPE_VECTOR (type) = 1;
1936 if (flags & TYPE_FLAG_STUB_SUPPORTED)
1937 TYPE_STUB_SUPPORTED (type) = 1;
1938 if (flags & TYPE_FLAG_FIXED_INSTANCE)
1939 TYPE_FIXED_INSTANCE (type) = 1;
1940 if (flags & TYPE_FLAG_GNU_IFUNC)
1941 TYPE_GNU_IFUNC (type) = 1;
1944 TYPE_NAME (type) = obsavestring (name, strlen (name),
1945 &objfile->objfile_obstack);
1949 if (name && strcmp (name, "char") == 0)
1950 TYPE_NOSIGN (type) = 1;
1954 case TYPE_CODE_STRUCT:
1955 case TYPE_CODE_UNION:
1956 case TYPE_CODE_NAMESPACE:
1957 INIT_CPLUS_SPECIFIC (type);
1960 TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_FLOATFORMAT;
1962 case TYPE_CODE_FUNC:
1963 INIT_FUNC_SPECIFIC (type);
1970 can_dereference (struct type *t)
1972 /* FIXME: Should we return true for references as well as
1977 && TYPE_CODE (t) == TYPE_CODE_PTR
1978 && TYPE_CODE (TYPE_TARGET_TYPE (t)) != TYPE_CODE_VOID);
1982 is_integral_type (struct type *t)
1987 && ((TYPE_CODE (t) == TYPE_CODE_INT)
1988 || (TYPE_CODE (t) == TYPE_CODE_ENUM)
1989 || (TYPE_CODE (t) == TYPE_CODE_FLAGS)
1990 || (TYPE_CODE (t) == TYPE_CODE_CHAR)
1991 || (TYPE_CODE (t) == TYPE_CODE_RANGE)
1992 || (TYPE_CODE (t) == TYPE_CODE_BOOL)));
1995 /* Return true if TYPE is scalar. */
1998 is_scalar_type (struct type *type)
2000 CHECK_TYPEDEF (type);
2002 switch (TYPE_CODE (type))
2004 case TYPE_CODE_ARRAY:
2005 case TYPE_CODE_STRUCT:
2006 case TYPE_CODE_UNION:
2008 case TYPE_CODE_STRING:
2009 case TYPE_CODE_BITSTRING:
2016 /* Return true if T is scalar, or a composite type which in practice has
2017 the memory layout of a scalar type. E.g., an array or struct with only
2018 one scalar element inside it, or a union with only scalar elements. */
2021 is_scalar_type_recursive (struct type *t)
2025 if (is_scalar_type (t))
2027 /* Are we dealing with an array or string of known dimensions? */
2028 else if ((TYPE_CODE (t) == TYPE_CODE_ARRAY
2029 || TYPE_CODE (t) == TYPE_CODE_STRING) && TYPE_NFIELDS (t) == 1
2030 && TYPE_CODE (TYPE_INDEX_TYPE (t)) == TYPE_CODE_RANGE)
2032 LONGEST low_bound, high_bound;
2033 struct type *elt_type = check_typedef (TYPE_TARGET_TYPE (t));
2035 get_discrete_bounds (TYPE_INDEX_TYPE (t), &low_bound, &high_bound);
2037 return high_bound == low_bound && is_scalar_type_recursive (elt_type);
2039 /* Are we dealing with a struct with one element? */
2040 else if (TYPE_CODE (t) == TYPE_CODE_STRUCT && TYPE_NFIELDS (t) == 1)
2041 return is_scalar_type_recursive (TYPE_FIELD_TYPE (t, 0));
2042 else if (TYPE_CODE (t) == TYPE_CODE_UNION)
2044 int i, n = TYPE_NFIELDS (t);
2046 /* If all elements of the union are scalar, then the union is scalar. */
2047 for (i = 0; i < n; i++)
2048 if (!is_scalar_type_recursive (TYPE_FIELD_TYPE (t, i)))
2057 /* A helper function which returns true if types A and B represent the
2058 "same" class type. This is true if the types have the same main
2059 type, or the same name. */
2062 class_types_same_p (const struct type *a, const struct type *b)
2064 return (TYPE_MAIN_TYPE (a) == TYPE_MAIN_TYPE (b)
2065 || (TYPE_NAME (a) && TYPE_NAME (b)
2066 && !strcmp (TYPE_NAME (a), TYPE_NAME (b))));
2069 /* If BASE is an ancestor of DCLASS return the distance between them.
2070 otherwise return -1;
2074 class B: public A {};
2075 class C: public B {};
2078 distance_to_ancestor (A, A, 0) = 0
2079 distance_to_ancestor (A, B, 0) = 1
2080 distance_to_ancestor (A, C, 0) = 2
2081 distance_to_ancestor (A, D, 0) = 3
2083 If PUBLIC is 1 then only public ancestors are considered,
2084 and the function returns the distance only if BASE is a public ancestor
2088 distance_to_ancestor (A, D, 1) = -1. */
2091 distance_to_ancestor (struct type *base, struct type *dclass, int public)
2096 CHECK_TYPEDEF (base);
2097 CHECK_TYPEDEF (dclass);
2099 if (class_types_same_p (base, dclass))
2102 for (i = 0; i < TYPE_N_BASECLASSES (dclass); i++)
2104 if (public && ! BASETYPE_VIA_PUBLIC (dclass, i))
2107 d = distance_to_ancestor (base, TYPE_BASECLASS (dclass, i), public);
2115 /* Check whether BASE is an ancestor or base class or DCLASS
2116 Return 1 if so, and 0 if not.
2117 Note: If BASE and DCLASS are of the same type, this function
2118 will return 1. So for some class A, is_ancestor (A, A) will
2122 is_ancestor (struct type *base, struct type *dclass)
2124 return distance_to_ancestor (base, dclass, 0) >= 0;
2127 /* Like is_ancestor, but only returns true when BASE is a public
2128 ancestor of DCLASS. */
2131 is_public_ancestor (struct type *base, struct type *dclass)
2133 return distance_to_ancestor (base, dclass, 1) >= 0;
2136 /* A helper function for is_unique_ancestor. */
2139 is_unique_ancestor_worker (struct type *base, struct type *dclass,
2141 const gdb_byte *valaddr, int embedded_offset,
2142 CORE_ADDR address, struct value *val)
2146 CHECK_TYPEDEF (base);
2147 CHECK_TYPEDEF (dclass);
2149 for (i = 0; i < TYPE_N_BASECLASSES (dclass) && count < 2; ++i)
2154 iter = check_typedef (TYPE_BASECLASS (dclass, i));
2156 this_offset = baseclass_offset (dclass, i, valaddr, embedded_offset,
2159 if (class_types_same_p (base, iter))
2161 /* If this is the first subclass, set *OFFSET and set count
2162 to 1. Otherwise, if this is at the same offset as
2163 previous instances, do nothing. Otherwise, increment
2167 *offset = this_offset;
2170 else if (this_offset == *offset)
2178 count += is_unique_ancestor_worker (base, iter, offset,
2180 embedded_offset + this_offset,
2187 /* Like is_ancestor, but only returns true if BASE is a unique base
2188 class of the type of VAL. */
2191 is_unique_ancestor (struct type *base, struct value *val)
2195 return is_unique_ancestor_worker (base, value_type (val), &offset,
2196 value_contents_for_printing (val),
2197 value_embedded_offset (val),
2198 value_address (val), val) == 1;
2203 /* Return the sum of the rank of A with the rank of B. */
2206 sum_ranks (struct rank a, struct rank b)
2209 c.rank = a.rank + b.rank;
2210 c.subrank = a.subrank + b.subrank;
2214 /* Compare rank A and B and return:
2216 1 if a is better than b
2217 -1 if b is better than a. */
2220 compare_ranks (struct rank a, struct rank b)
2222 if (a.rank == b.rank)
2224 if (a.subrank == b.subrank)
2226 if (a.subrank < b.subrank)
2228 if (a.subrank > b.subrank)
2232 if (a.rank < b.rank)
2235 /* a.rank > b.rank */
2239 /* Functions for overload resolution begin here. */
2241 /* Compare two badness vectors A and B and return the result.
2242 0 => A and B are identical
2243 1 => A and B are incomparable
2244 2 => A is better than B
2245 3 => A is worse than B */
2248 compare_badness (struct badness_vector *a, struct badness_vector *b)
2252 short found_pos = 0; /* any positives in c? */
2253 short found_neg = 0; /* any negatives in c? */
2255 /* differing lengths => incomparable */
2256 if (a->length != b->length)
2259 /* Subtract b from a */
2260 for (i = 0; i < a->length; i++)
2262 tmp = compare_ranks (b->rank[i], a->rank[i]);
2272 return 1; /* incomparable */
2274 return 3; /* A > B */
2280 return 2; /* A < B */
2282 return 0; /* A == B */
2286 /* Rank a function by comparing its parameter types (PARMS, length
2287 NPARMS), to the types of an argument list (ARGS, length NARGS).
2288 Return a pointer to a badness vector. This has NARGS + 1
2291 struct badness_vector *
2292 rank_function (struct type **parms, int nparms,
2293 struct value **args, int nargs)
2296 struct badness_vector *bv;
2297 int min_len = nparms < nargs ? nparms : nargs;
2299 bv = xmalloc (sizeof (struct badness_vector));
2300 bv->length = nargs + 1; /* add 1 for the length-match rank. */
2301 bv->rank = xmalloc ((nargs + 1) * sizeof (int));
2303 /* First compare the lengths of the supplied lists.
2304 If there is a mismatch, set it to a high value. */
2306 /* pai/1997-06-03 FIXME: when we have debug info about default
2307 arguments and ellipsis parameter lists, we should consider those
2308 and rank the length-match more finely. */
2310 LENGTH_MATCH (bv) = (nargs != nparms)
2311 ? LENGTH_MISMATCH_BADNESS
2312 : EXACT_MATCH_BADNESS;
2314 /* Now rank all the parameters of the candidate function. */
2315 for (i = 1; i <= min_len; i++)
2316 bv->rank[i] = rank_one_type (parms[i - 1], value_type (args[i - 1]),
2319 /* If more arguments than parameters, add dummy entries. */
2320 for (i = min_len + 1; i <= nargs; i++)
2321 bv->rank[i] = TOO_FEW_PARAMS_BADNESS;
2326 /* Compare the names of two integer types, assuming that any sign
2327 qualifiers have been checked already. We do it this way because
2328 there may be an "int" in the name of one of the types. */
2331 integer_types_same_name_p (const char *first, const char *second)
2333 int first_p, second_p;
2335 /* If both are shorts, return 1; if neither is a short, keep
2337 first_p = (strstr (first, "short") != NULL);
2338 second_p = (strstr (second, "short") != NULL);
2339 if (first_p && second_p)
2341 if (first_p || second_p)
2344 /* Likewise for long. */
2345 first_p = (strstr (first, "long") != NULL);
2346 second_p = (strstr (second, "long") != NULL);
2347 if (first_p && second_p)
2349 if (first_p || second_p)
2352 /* Likewise for char. */
2353 first_p = (strstr (first, "char") != NULL);
2354 second_p = (strstr (second, "char") != NULL);
2355 if (first_p && second_p)
2357 if (first_p || second_p)
2360 /* They must both be ints. */
2364 /* Compares type A to type B returns 1 if the represent the same type
2368 types_equal (struct type *a, struct type *b)
2370 /* Identical type pointers. */
2371 /* However, this still doesn't catch all cases of same type for b
2372 and a. The reason is that builtin types are different from
2373 the same ones constructed from the object. */
2377 /* Resolve typedefs */
2378 if (TYPE_CODE (a) == TYPE_CODE_TYPEDEF)
2379 a = check_typedef (a);
2380 if (TYPE_CODE (b) == TYPE_CODE_TYPEDEF)
2381 b = check_typedef (b);
2383 /* If after resolving typedefs a and b are not of the same type
2384 code then they are not equal. */
2385 if (TYPE_CODE (a) != TYPE_CODE (b))
2388 /* If a and b are both pointers types or both reference types then
2389 they are equal of the same type iff the objects they refer to are
2390 of the same type. */
2391 if (TYPE_CODE (a) == TYPE_CODE_PTR
2392 || TYPE_CODE (a) == TYPE_CODE_REF)
2393 return types_equal (TYPE_TARGET_TYPE (a),
2394 TYPE_TARGET_TYPE (b));
2396 /* Well, damnit, if the names are exactly the same, I'll say they
2397 are exactly the same. This happens when we generate method
2398 stubs. The types won't point to the same address, but they
2399 really are the same. */
2401 if (TYPE_NAME (a) && TYPE_NAME (b)
2402 && strcmp (TYPE_NAME (a), TYPE_NAME (b)) == 0)
2405 /* Check if identical after resolving typedefs. */
2412 /* Compare one type (PARM) for compatibility with another (ARG).
2413 * PARM is intended to be the parameter type of a function; and
2414 * ARG is the supplied argument's type. This function tests if
2415 * the latter can be converted to the former.
2416 * VALUE is the argument's value or NULL if none (or called recursively)
2418 * Return 0 if they are identical types;
2419 * Otherwise, return an integer which corresponds to how compatible
2420 * PARM is to ARG. The higher the return value, the worse the match.
2421 * Generally the "bad" conversions are all uniformly assigned a 100. */
2424 rank_one_type (struct type *parm, struct type *arg, struct value *value)
2426 struct rank rank = {0,0};
2428 if (types_equal (parm, arg))
2429 return EXACT_MATCH_BADNESS;
2431 /* Resolve typedefs */
2432 if (TYPE_CODE (parm) == TYPE_CODE_TYPEDEF)
2433 parm = check_typedef (parm);
2434 if (TYPE_CODE (arg) == TYPE_CODE_TYPEDEF)
2435 arg = check_typedef (arg);
2437 /* See through references, since we can almost make non-references
2439 if (TYPE_CODE (arg) == TYPE_CODE_REF)
2440 return (sum_ranks (rank_one_type (parm, TYPE_TARGET_TYPE (arg), NULL),
2441 REFERENCE_CONVERSION_BADNESS));
2442 if (TYPE_CODE (parm) == TYPE_CODE_REF)
2443 return (sum_ranks (rank_one_type (TYPE_TARGET_TYPE (parm), arg, NULL),
2444 REFERENCE_CONVERSION_BADNESS));
2446 /* Debugging only. */
2447 fprintf_filtered (gdb_stderr,
2448 "------ Arg is %s [%d], parm is %s [%d]\n",
2449 TYPE_NAME (arg), TYPE_CODE (arg),
2450 TYPE_NAME (parm), TYPE_CODE (parm));
2452 /* x -> y means arg of type x being supplied for parameter of type y. */
2454 switch (TYPE_CODE (parm))
2457 switch (TYPE_CODE (arg))
2461 /* Allowed pointer conversions are:
2462 (a) pointer to void-pointer conversion. */
2463 if (TYPE_CODE (TYPE_TARGET_TYPE (parm)) == TYPE_CODE_VOID)
2464 return VOID_PTR_CONVERSION_BADNESS;
2466 /* (b) pointer to ancestor-pointer conversion. */
2467 rank.subrank = distance_to_ancestor (TYPE_TARGET_TYPE (parm),
2468 TYPE_TARGET_TYPE (arg),
2470 if (rank.subrank >= 0)
2471 return sum_ranks (BASE_PTR_CONVERSION_BADNESS, rank);
2473 return INCOMPATIBLE_TYPE_BADNESS;
2474 case TYPE_CODE_ARRAY:
2475 if (types_equal (TYPE_TARGET_TYPE (parm),
2476 TYPE_TARGET_TYPE (arg)))
2477 return EXACT_MATCH_BADNESS;
2478 return INCOMPATIBLE_TYPE_BADNESS;
2479 case TYPE_CODE_FUNC:
2480 return rank_one_type (TYPE_TARGET_TYPE (parm), arg, NULL);
2482 if (value != NULL && TYPE_CODE (value_type (value)) == TYPE_CODE_INT
2483 && value_as_long (value) == 0)
2485 /* Null pointer conversion: allow it to be cast to a pointer.
2486 [4.10.1 of C++ standard draft n3290] */
2487 return NULL_POINTER_CONVERSION_BADNESS;
2490 case TYPE_CODE_ENUM:
2491 case TYPE_CODE_FLAGS:
2492 case TYPE_CODE_CHAR:
2493 case TYPE_CODE_RANGE:
2494 case TYPE_CODE_BOOL:
2496 return INCOMPATIBLE_TYPE_BADNESS;
2498 case TYPE_CODE_ARRAY:
2499 switch (TYPE_CODE (arg))
2502 case TYPE_CODE_ARRAY:
2503 return rank_one_type (TYPE_TARGET_TYPE (parm),
2504 TYPE_TARGET_TYPE (arg), NULL);
2506 return INCOMPATIBLE_TYPE_BADNESS;
2508 case TYPE_CODE_FUNC:
2509 switch (TYPE_CODE (arg))
2511 case TYPE_CODE_PTR: /* funcptr -> func */
2512 return rank_one_type (parm, TYPE_TARGET_TYPE (arg), NULL);
2514 return INCOMPATIBLE_TYPE_BADNESS;
2517 switch (TYPE_CODE (arg))
2520 if (TYPE_LENGTH (arg) == TYPE_LENGTH (parm))
2522 /* Deal with signed, unsigned, and plain chars and
2523 signed and unsigned ints. */
2524 if (TYPE_NOSIGN (parm))
2526 /* This case only for character types. */
2527 if (TYPE_NOSIGN (arg))
2528 return EXACT_MATCH_BADNESS; /* plain char -> plain char */
2529 else /* signed/unsigned char -> plain char */
2530 return INTEGER_CONVERSION_BADNESS;
2532 else if (TYPE_UNSIGNED (parm))
2534 if (TYPE_UNSIGNED (arg))
2536 /* unsigned int -> unsigned int, or
2537 unsigned long -> unsigned long */
2538 if (integer_types_same_name_p (TYPE_NAME (parm),
2540 return EXACT_MATCH_BADNESS;
2541 else if (integer_types_same_name_p (TYPE_NAME (arg),
2543 && integer_types_same_name_p (TYPE_NAME (parm),
2545 /* unsigned int -> unsigned long */
2546 return INTEGER_PROMOTION_BADNESS;
2548 /* unsigned long -> unsigned int */
2549 return INTEGER_CONVERSION_BADNESS;
2553 if (integer_types_same_name_p (TYPE_NAME (arg),
2555 && integer_types_same_name_p (TYPE_NAME (parm),
2557 /* signed long -> unsigned int */
2558 return INTEGER_CONVERSION_BADNESS;
2560 /* signed int/long -> unsigned int/long */
2561 return INTEGER_CONVERSION_BADNESS;
2564 else if (!TYPE_NOSIGN (arg) && !TYPE_UNSIGNED (arg))
2566 if (integer_types_same_name_p (TYPE_NAME (parm),
2568 return EXACT_MATCH_BADNESS;
2569 else if (integer_types_same_name_p (TYPE_NAME (arg),
2571 && integer_types_same_name_p (TYPE_NAME (parm),
2573 return INTEGER_PROMOTION_BADNESS;
2575 return INTEGER_CONVERSION_BADNESS;
2578 return INTEGER_CONVERSION_BADNESS;
2580 else if (TYPE_LENGTH (arg) < TYPE_LENGTH (parm))
2581 return INTEGER_PROMOTION_BADNESS;
2583 return INTEGER_CONVERSION_BADNESS;
2584 case TYPE_CODE_ENUM:
2585 case TYPE_CODE_FLAGS:
2586 case TYPE_CODE_CHAR:
2587 case TYPE_CODE_RANGE:
2588 case TYPE_CODE_BOOL:
2589 return INTEGER_PROMOTION_BADNESS;
2591 return INT_FLOAT_CONVERSION_BADNESS;
2593 return NS_POINTER_CONVERSION_BADNESS;
2595 return INCOMPATIBLE_TYPE_BADNESS;
2598 case TYPE_CODE_ENUM:
2599 switch (TYPE_CODE (arg))
2602 case TYPE_CODE_CHAR:
2603 case TYPE_CODE_RANGE:
2604 case TYPE_CODE_BOOL:
2605 case TYPE_CODE_ENUM:
2606 return INTEGER_CONVERSION_BADNESS;
2608 return INT_FLOAT_CONVERSION_BADNESS;
2610 return INCOMPATIBLE_TYPE_BADNESS;
2613 case TYPE_CODE_CHAR:
2614 switch (TYPE_CODE (arg))
2616 case TYPE_CODE_RANGE:
2617 case TYPE_CODE_BOOL:
2618 case TYPE_CODE_ENUM:
2619 return INTEGER_CONVERSION_BADNESS;
2621 return INT_FLOAT_CONVERSION_BADNESS;
2623 if (TYPE_LENGTH (arg) > TYPE_LENGTH (parm))
2624 return INTEGER_CONVERSION_BADNESS;
2625 else if (TYPE_LENGTH (arg) < TYPE_LENGTH (parm))
2626 return INTEGER_PROMOTION_BADNESS;
2627 /* >>> !! else fall through !! <<< */
2628 case TYPE_CODE_CHAR:
2629 /* Deal with signed, unsigned, and plain chars for C++ and
2630 with int cases falling through from previous case. */
2631 if (TYPE_NOSIGN (parm))
2633 if (TYPE_NOSIGN (arg))
2634 return EXACT_MATCH_BADNESS;
2636 return INTEGER_CONVERSION_BADNESS;
2638 else if (TYPE_UNSIGNED (parm))
2640 if (TYPE_UNSIGNED (arg))
2641 return EXACT_MATCH_BADNESS;
2643 return INTEGER_PROMOTION_BADNESS;
2645 else if (!TYPE_NOSIGN (arg) && !TYPE_UNSIGNED (arg))
2646 return EXACT_MATCH_BADNESS;
2648 return INTEGER_CONVERSION_BADNESS;
2650 return INCOMPATIBLE_TYPE_BADNESS;
2653 case TYPE_CODE_RANGE:
2654 switch (TYPE_CODE (arg))
2657 case TYPE_CODE_CHAR:
2658 case TYPE_CODE_RANGE:
2659 case TYPE_CODE_BOOL:
2660 case TYPE_CODE_ENUM:
2661 return INTEGER_CONVERSION_BADNESS;
2663 return INT_FLOAT_CONVERSION_BADNESS;
2665 return INCOMPATIBLE_TYPE_BADNESS;
2668 case TYPE_CODE_BOOL:
2669 switch (TYPE_CODE (arg))
2672 case TYPE_CODE_CHAR:
2673 case TYPE_CODE_RANGE:
2674 case TYPE_CODE_ENUM:
2676 return INCOMPATIBLE_TYPE_BADNESS;
2678 return BOOL_PTR_CONVERSION_BADNESS;
2679 case TYPE_CODE_BOOL:
2680 return EXACT_MATCH_BADNESS;
2682 return INCOMPATIBLE_TYPE_BADNESS;
2686 switch (TYPE_CODE (arg))
2689 if (TYPE_LENGTH (arg) < TYPE_LENGTH (parm))
2690 return FLOAT_PROMOTION_BADNESS;
2691 else if (TYPE_LENGTH (arg) == TYPE_LENGTH (parm))
2692 return EXACT_MATCH_BADNESS;
2694 return FLOAT_CONVERSION_BADNESS;
2696 case TYPE_CODE_BOOL:
2697 case TYPE_CODE_ENUM:
2698 case TYPE_CODE_RANGE:
2699 case TYPE_CODE_CHAR:
2700 return INT_FLOAT_CONVERSION_BADNESS;
2702 return INCOMPATIBLE_TYPE_BADNESS;
2705 case TYPE_CODE_COMPLEX:
2706 switch (TYPE_CODE (arg))
2707 { /* Strictly not needed for C++, but... */
2709 return FLOAT_PROMOTION_BADNESS;
2710 case TYPE_CODE_COMPLEX:
2711 return EXACT_MATCH_BADNESS;
2713 return INCOMPATIBLE_TYPE_BADNESS;
2716 case TYPE_CODE_STRUCT:
2717 /* currently same as TYPE_CODE_CLASS. */
2718 switch (TYPE_CODE (arg))
2720 case TYPE_CODE_STRUCT:
2721 /* Check for derivation */
2722 rank.subrank = distance_to_ancestor (parm, arg, 0);
2723 if (rank.subrank >= 0)
2724 return sum_ranks (BASE_CONVERSION_BADNESS, rank);
2725 /* else fall through */
2727 return INCOMPATIBLE_TYPE_BADNESS;
2730 case TYPE_CODE_UNION:
2731 switch (TYPE_CODE (arg))
2733 case TYPE_CODE_UNION:
2735 return INCOMPATIBLE_TYPE_BADNESS;
2738 case TYPE_CODE_MEMBERPTR:
2739 switch (TYPE_CODE (arg))
2742 return INCOMPATIBLE_TYPE_BADNESS;
2745 case TYPE_CODE_METHOD:
2746 switch (TYPE_CODE (arg))
2750 return INCOMPATIBLE_TYPE_BADNESS;
2754 switch (TYPE_CODE (arg))
2758 return INCOMPATIBLE_TYPE_BADNESS;
2763 switch (TYPE_CODE (arg))
2767 return rank_one_type (TYPE_FIELD_TYPE (parm, 0),
2768 TYPE_FIELD_TYPE (arg, 0), NULL);
2770 return INCOMPATIBLE_TYPE_BADNESS;
2773 case TYPE_CODE_VOID:
2775 return INCOMPATIBLE_TYPE_BADNESS;
2776 } /* switch (TYPE_CODE (arg)) */
2780 /* End of functions for overload resolution. */
2783 print_bit_vector (B_TYPE *bits, int nbits)
2787 for (bitno = 0; bitno < nbits; bitno++)
2789 if ((bitno % 8) == 0)
2791 puts_filtered (" ");
2793 if (B_TST (bits, bitno))
2794 printf_filtered (("1"));
2796 printf_filtered (("0"));
2800 /* Note the first arg should be the "this" pointer, we may not want to
2801 include it since we may get into a infinitely recursive
2805 print_arg_types (struct field *args, int nargs, int spaces)
2811 for (i = 0; i < nargs; i++)
2812 recursive_dump_type (args[i].type, spaces + 2);
2817 field_is_static (struct field *f)
2819 /* "static" fields are the fields whose location is not relative
2820 to the address of the enclosing struct. It would be nice to
2821 have a dedicated flag that would be set for static fields when
2822 the type is being created. But in practice, checking the field
2823 loc_kind should give us an accurate answer. */
2824 return (FIELD_LOC_KIND (*f) == FIELD_LOC_KIND_PHYSNAME
2825 || FIELD_LOC_KIND (*f) == FIELD_LOC_KIND_PHYSADDR);
2829 dump_fn_fieldlists (struct type *type, int spaces)
2835 printfi_filtered (spaces, "fn_fieldlists ");
2836 gdb_print_host_address (TYPE_FN_FIELDLISTS (type), gdb_stdout);
2837 printf_filtered ("\n");
2838 for (method_idx = 0; method_idx < TYPE_NFN_FIELDS (type); method_idx++)
2840 f = TYPE_FN_FIELDLIST1 (type, method_idx);
2841 printfi_filtered (spaces + 2, "[%d] name '%s' (",
2843 TYPE_FN_FIELDLIST_NAME (type, method_idx));
2844 gdb_print_host_address (TYPE_FN_FIELDLIST_NAME (type, method_idx),
2846 printf_filtered (_(") length %d\n"),
2847 TYPE_FN_FIELDLIST_LENGTH (type, method_idx));
2848 for (overload_idx = 0;
2849 overload_idx < TYPE_FN_FIELDLIST_LENGTH (type, method_idx);
2852 printfi_filtered (spaces + 4, "[%d] physname '%s' (",
2854 TYPE_FN_FIELD_PHYSNAME (f, overload_idx));
2855 gdb_print_host_address (TYPE_FN_FIELD_PHYSNAME (f, overload_idx),
2857 printf_filtered (")\n");
2858 printfi_filtered (spaces + 8, "type ");
2859 gdb_print_host_address (TYPE_FN_FIELD_TYPE (f, overload_idx),
2861 printf_filtered ("\n");
2863 recursive_dump_type (TYPE_FN_FIELD_TYPE (f, overload_idx),
2866 printfi_filtered (spaces + 8, "args ");
2867 gdb_print_host_address (TYPE_FN_FIELD_ARGS (f, overload_idx),
2869 printf_filtered ("\n");
2871 print_arg_types (TYPE_FN_FIELD_ARGS (f, overload_idx),
2872 TYPE_NFIELDS (TYPE_FN_FIELD_TYPE (f,
2875 printfi_filtered (spaces + 8, "fcontext ");
2876 gdb_print_host_address (TYPE_FN_FIELD_FCONTEXT (f, overload_idx),
2878 printf_filtered ("\n");
2880 printfi_filtered (spaces + 8, "is_const %d\n",
2881 TYPE_FN_FIELD_CONST (f, overload_idx));
2882 printfi_filtered (spaces + 8, "is_volatile %d\n",
2883 TYPE_FN_FIELD_VOLATILE (f, overload_idx));
2884 printfi_filtered (spaces + 8, "is_private %d\n",
2885 TYPE_FN_FIELD_PRIVATE (f, overload_idx));
2886 printfi_filtered (spaces + 8, "is_protected %d\n",
2887 TYPE_FN_FIELD_PROTECTED (f, overload_idx));
2888 printfi_filtered (spaces + 8, "is_stub %d\n",
2889 TYPE_FN_FIELD_STUB (f, overload_idx));
2890 printfi_filtered (spaces + 8, "voffset %u\n",
2891 TYPE_FN_FIELD_VOFFSET (f, overload_idx));
2897 print_cplus_stuff (struct type *type, int spaces)
2899 printfi_filtered (spaces, "n_baseclasses %d\n",
2900 TYPE_N_BASECLASSES (type));
2901 printfi_filtered (spaces, "nfn_fields %d\n",
2902 TYPE_NFN_FIELDS (type));
2903 if (TYPE_N_BASECLASSES (type) > 0)
2905 printfi_filtered (spaces, "virtual_field_bits (%d bits at *",
2906 TYPE_N_BASECLASSES (type));
2907 gdb_print_host_address (TYPE_FIELD_VIRTUAL_BITS (type),
2909 printf_filtered (")");
2911 print_bit_vector (TYPE_FIELD_VIRTUAL_BITS (type),
2912 TYPE_N_BASECLASSES (type));
2913 puts_filtered ("\n");
2915 if (TYPE_NFIELDS (type) > 0)
2917 if (TYPE_FIELD_PRIVATE_BITS (type) != NULL)
2919 printfi_filtered (spaces,
2920 "private_field_bits (%d bits at *",
2921 TYPE_NFIELDS (type));
2922 gdb_print_host_address (TYPE_FIELD_PRIVATE_BITS (type),
2924 printf_filtered (")");
2925 print_bit_vector (TYPE_FIELD_PRIVATE_BITS (type),
2926 TYPE_NFIELDS (type));
2927 puts_filtered ("\n");
2929 if (TYPE_FIELD_PROTECTED_BITS (type) != NULL)
2931 printfi_filtered (spaces,
2932 "protected_field_bits (%d bits at *",
2933 TYPE_NFIELDS (type));
2934 gdb_print_host_address (TYPE_FIELD_PROTECTED_BITS (type),
2936 printf_filtered (")");
2937 print_bit_vector (TYPE_FIELD_PROTECTED_BITS (type),
2938 TYPE_NFIELDS (type));
2939 puts_filtered ("\n");
2942 if (TYPE_NFN_FIELDS (type) > 0)
2944 dump_fn_fieldlists (type, spaces);
2948 /* Print the contents of the TYPE's type_specific union, assuming that
2949 its type-specific kind is TYPE_SPECIFIC_GNAT_STUFF. */
2952 print_gnat_stuff (struct type *type, int spaces)
2954 struct type *descriptive_type = TYPE_DESCRIPTIVE_TYPE (type);
2956 recursive_dump_type (descriptive_type, spaces + 2);
2959 static struct obstack dont_print_type_obstack;
2962 recursive_dump_type (struct type *type, int spaces)
2967 obstack_begin (&dont_print_type_obstack, 0);
2969 if (TYPE_NFIELDS (type) > 0
2970 || (HAVE_CPLUS_STRUCT (type) && TYPE_NFN_FIELDS (type) > 0))
2972 struct type **first_dont_print
2973 = (struct type **) obstack_base (&dont_print_type_obstack);
2975 int i = (struct type **)
2976 obstack_next_free (&dont_print_type_obstack) - first_dont_print;
2980 if (type == first_dont_print[i])
2982 printfi_filtered (spaces, "type node ");
2983 gdb_print_host_address (type, gdb_stdout);
2984 printf_filtered (_(" <same as already seen type>\n"));
2989 obstack_ptr_grow (&dont_print_type_obstack, type);
2992 printfi_filtered (spaces, "type node ");
2993 gdb_print_host_address (type, gdb_stdout);
2994 printf_filtered ("\n");
2995 printfi_filtered (spaces, "name '%s' (",
2996 TYPE_NAME (type) ? TYPE_NAME (type) : "<NULL>");
2997 gdb_print_host_address (TYPE_NAME (type), gdb_stdout);
2998 printf_filtered (")\n");
2999 printfi_filtered (spaces, "tagname '%s' (",
3000 TYPE_TAG_NAME (type) ? TYPE_TAG_NAME (type) : "<NULL>");
3001 gdb_print_host_address (TYPE_TAG_NAME (type), gdb_stdout);
3002 printf_filtered (")\n");
3003 printfi_filtered (spaces, "code 0x%x ", TYPE_CODE (type));
3004 switch (TYPE_CODE (type))
3006 case TYPE_CODE_UNDEF:
3007 printf_filtered ("(TYPE_CODE_UNDEF)");
3010 printf_filtered ("(TYPE_CODE_PTR)");
3012 case TYPE_CODE_ARRAY:
3013 printf_filtered ("(TYPE_CODE_ARRAY)");
3015 case TYPE_CODE_STRUCT:
3016 printf_filtered ("(TYPE_CODE_STRUCT)");
3018 case TYPE_CODE_UNION:
3019 printf_filtered ("(TYPE_CODE_UNION)");
3021 case TYPE_CODE_ENUM:
3022 printf_filtered ("(TYPE_CODE_ENUM)");
3024 case TYPE_CODE_FLAGS:
3025 printf_filtered ("(TYPE_CODE_FLAGS)");
3027 case TYPE_CODE_FUNC:
3028 printf_filtered ("(TYPE_CODE_FUNC)");
3031 printf_filtered ("(TYPE_CODE_INT)");
3034 printf_filtered ("(TYPE_CODE_FLT)");
3036 case TYPE_CODE_VOID:
3037 printf_filtered ("(TYPE_CODE_VOID)");
3040 printf_filtered ("(TYPE_CODE_SET)");
3042 case TYPE_CODE_RANGE:
3043 printf_filtered ("(TYPE_CODE_RANGE)");
3045 case TYPE_CODE_STRING:
3046 printf_filtered ("(TYPE_CODE_STRING)");
3048 case TYPE_CODE_BITSTRING:
3049 printf_filtered ("(TYPE_CODE_BITSTRING)");
3051 case TYPE_CODE_ERROR:
3052 printf_filtered ("(TYPE_CODE_ERROR)");
3054 case TYPE_CODE_MEMBERPTR:
3055 printf_filtered ("(TYPE_CODE_MEMBERPTR)");
3057 case TYPE_CODE_METHODPTR:
3058 printf_filtered ("(TYPE_CODE_METHODPTR)");
3060 case TYPE_CODE_METHOD:
3061 printf_filtered ("(TYPE_CODE_METHOD)");
3064 printf_filtered ("(TYPE_CODE_REF)");
3066 case TYPE_CODE_CHAR:
3067 printf_filtered ("(TYPE_CODE_CHAR)");
3069 case TYPE_CODE_BOOL:
3070 printf_filtered ("(TYPE_CODE_BOOL)");
3072 case TYPE_CODE_COMPLEX:
3073 printf_filtered ("(TYPE_CODE_COMPLEX)");
3075 case TYPE_CODE_TYPEDEF:
3076 printf_filtered ("(TYPE_CODE_TYPEDEF)");
3078 case TYPE_CODE_NAMESPACE:
3079 printf_filtered ("(TYPE_CODE_NAMESPACE)");
3082 printf_filtered ("(UNKNOWN TYPE CODE)");
3085 puts_filtered ("\n");
3086 printfi_filtered (spaces, "length %d\n", TYPE_LENGTH (type));
3087 if (TYPE_OBJFILE_OWNED (type))
3089 printfi_filtered (spaces, "objfile ");
3090 gdb_print_host_address (TYPE_OWNER (type).objfile, gdb_stdout);
3094 printfi_filtered (spaces, "gdbarch ");
3095 gdb_print_host_address (TYPE_OWNER (type).gdbarch, gdb_stdout);
3097 printf_filtered ("\n");
3098 printfi_filtered (spaces, "target_type ");
3099 gdb_print_host_address (TYPE_TARGET_TYPE (type), gdb_stdout);
3100 printf_filtered ("\n");
3101 if (TYPE_TARGET_TYPE (type) != NULL)
3103 recursive_dump_type (TYPE_TARGET_TYPE (type), spaces + 2);
3105 printfi_filtered (spaces, "pointer_type ");
3106 gdb_print_host_address (TYPE_POINTER_TYPE (type), gdb_stdout);
3107 printf_filtered ("\n");
3108 printfi_filtered (spaces, "reference_type ");
3109 gdb_print_host_address (TYPE_REFERENCE_TYPE (type), gdb_stdout);
3110 printf_filtered ("\n");
3111 printfi_filtered (spaces, "type_chain ");
3112 gdb_print_host_address (TYPE_CHAIN (type), gdb_stdout);
3113 printf_filtered ("\n");
3114 printfi_filtered (spaces, "instance_flags 0x%x",
3115 TYPE_INSTANCE_FLAGS (type));
3116 if (TYPE_CONST (type))
3118 puts_filtered (" TYPE_FLAG_CONST");
3120 if (TYPE_VOLATILE (type))
3122 puts_filtered (" TYPE_FLAG_VOLATILE");
3124 if (TYPE_CODE_SPACE (type))
3126 puts_filtered (" TYPE_FLAG_CODE_SPACE");
3128 if (TYPE_DATA_SPACE (type))
3130 puts_filtered (" TYPE_FLAG_DATA_SPACE");
3132 if (TYPE_ADDRESS_CLASS_1 (type))
3134 puts_filtered (" TYPE_FLAG_ADDRESS_CLASS_1");
3136 if (TYPE_ADDRESS_CLASS_2 (type))
3138 puts_filtered (" TYPE_FLAG_ADDRESS_CLASS_2");
3140 puts_filtered ("\n");
3142 printfi_filtered (spaces, "flags");
3143 if (TYPE_UNSIGNED (type))
3145 puts_filtered (" TYPE_FLAG_UNSIGNED");
3147 if (TYPE_NOSIGN (type))
3149 puts_filtered (" TYPE_FLAG_NOSIGN");
3151 if (TYPE_STUB (type))
3153 puts_filtered (" TYPE_FLAG_STUB");
3155 if (TYPE_TARGET_STUB (type))
3157 puts_filtered (" TYPE_FLAG_TARGET_STUB");
3159 if (TYPE_STATIC (type))
3161 puts_filtered (" TYPE_FLAG_STATIC");
3163 if (TYPE_PROTOTYPED (type))
3165 puts_filtered (" TYPE_FLAG_PROTOTYPED");
3167 if (TYPE_INCOMPLETE (type))
3169 puts_filtered (" TYPE_FLAG_INCOMPLETE");
3171 if (TYPE_VARARGS (type))
3173 puts_filtered (" TYPE_FLAG_VARARGS");
3175 /* This is used for things like AltiVec registers on ppc. Gcc emits
3176 an attribute for the array type, which tells whether or not we
3177 have a vector, instead of a regular array. */
3178 if (TYPE_VECTOR (type))
3180 puts_filtered (" TYPE_FLAG_VECTOR");
3182 if (TYPE_FIXED_INSTANCE (type))
3184 puts_filtered (" TYPE_FIXED_INSTANCE");
3186 if (TYPE_STUB_SUPPORTED (type))
3188 puts_filtered (" TYPE_STUB_SUPPORTED");
3190 if (TYPE_NOTTEXT (type))
3192 puts_filtered (" TYPE_NOTTEXT");
3194 puts_filtered ("\n");
3195 printfi_filtered (spaces, "nfields %d ", TYPE_NFIELDS (type));
3196 gdb_print_host_address (TYPE_FIELDS (type), gdb_stdout);
3197 puts_filtered ("\n");
3198 for (idx = 0; idx < TYPE_NFIELDS (type); idx++)
3200 printfi_filtered (spaces + 2,
3201 "[%d] bitpos %d bitsize %d type ",
3202 idx, TYPE_FIELD_BITPOS (type, idx),
3203 TYPE_FIELD_BITSIZE (type, idx));
3204 gdb_print_host_address (TYPE_FIELD_TYPE (type, idx), gdb_stdout);
3205 printf_filtered (" name '%s' (",
3206 TYPE_FIELD_NAME (type, idx) != NULL
3207 ? TYPE_FIELD_NAME (type, idx)
3209 gdb_print_host_address (TYPE_FIELD_NAME (type, idx), gdb_stdout);
3210 printf_filtered (")\n");
3211 if (TYPE_FIELD_TYPE (type, idx) != NULL)
3213 recursive_dump_type (TYPE_FIELD_TYPE (type, idx), spaces + 4);
3216 if (TYPE_CODE (type) == TYPE_CODE_RANGE)
3218 printfi_filtered (spaces, "low %s%s high %s%s\n",
3219 plongest (TYPE_LOW_BOUND (type)),
3220 TYPE_LOW_BOUND_UNDEFINED (type) ? " (undefined)" : "",
3221 plongest (TYPE_HIGH_BOUND (type)),
3222 TYPE_HIGH_BOUND_UNDEFINED (type)
3223 ? " (undefined)" : "");
3225 printfi_filtered (spaces, "vptr_basetype ");
3226 gdb_print_host_address (TYPE_VPTR_BASETYPE (type), gdb_stdout);
3227 puts_filtered ("\n");
3228 if (TYPE_VPTR_BASETYPE (type) != NULL)
3230 recursive_dump_type (TYPE_VPTR_BASETYPE (type), spaces + 2);
3232 printfi_filtered (spaces, "vptr_fieldno %d\n",
3233 TYPE_VPTR_FIELDNO (type));
3235 switch (TYPE_SPECIFIC_FIELD (type))
3237 case TYPE_SPECIFIC_CPLUS_STUFF:
3238 printfi_filtered (spaces, "cplus_stuff ");
3239 gdb_print_host_address (TYPE_CPLUS_SPECIFIC (type),
3241 puts_filtered ("\n");
3242 print_cplus_stuff (type, spaces);
3245 case TYPE_SPECIFIC_GNAT_STUFF:
3246 printfi_filtered (spaces, "gnat_stuff ");
3247 gdb_print_host_address (TYPE_GNAT_SPECIFIC (type), gdb_stdout);
3248 puts_filtered ("\n");
3249 print_gnat_stuff (type, spaces);
3252 case TYPE_SPECIFIC_FLOATFORMAT:
3253 printfi_filtered (spaces, "floatformat ");
3254 if (TYPE_FLOATFORMAT (type) == NULL)
3255 puts_filtered ("(null)");
3258 puts_filtered ("{ ");
3259 if (TYPE_FLOATFORMAT (type)[0] == NULL
3260 || TYPE_FLOATFORMAT (type)[0]->name == NULL)
3261 puts_filtered ("(null)");
3263 puts_filtered (TYPE_FLOATFORMAT (type)[0]->name);
3265 puts_filtered (", ");
3266 if (TYPE_FLOATFORMAT (type)[1] == NULL
3267 || TYPE_FLOATFORMAT (type)[1]->name == NULL)
3268 puts_filtered ("(null)");
3270 puts_filtered (TYPE_FLOATFORMAT (type)[1]->name);
3272 puts_filtered (" }");
3274 puts_filtered ("\n");
3277 case TYPE_SPECIFIC_FUNC:
3278 printfi_filtered (spaces, "calling_convention %d\n",
3279 TYPE_CALLING_CONVENTION (type));
3280 /* tail_call_list is not printed. */
3285 obstack_free (&dont_print_type_obstack, NULL);
3288 /* Trivial helpers for the libiberty hash table, for mapping one
3293 struct type *old, *new;
3297 type_pair_hash (const void *item)
3299 const struct type_pair *pair = item;
3301 return htab_hash_pointer (pair->old);
3305 type_pair_eq (const void *item_lhs, const void *item_rhs)
3307 const struct type_pair *lhs = item_lhs, *rhs = item_rhs;
3309 return lhs->old == rhs->old;
3312 /* Allocate the hash table used by copy_type_recursive to walk
3313 types without duplicates. We use OBJFILE's obstack, because
3314 OBJFILE is about to be deleted. */
3317 create_copied_types_hash (struct objfile *objfile)
3319 return htab_create_alloc_ex (1, type_pair_hash, type_pair_eq,
3320 NULL, &objfile->objfile_obstack,
3321 hashtab_obstack_allocate,
3322 dummy_obstack_deallocate);
3325 /* Recursively copy (deep copy) TYPE, if it is associated with
3326 OBJFILE. Return a new type allocated using malloc, a saved type if
3327 we have already visited TYPE (using COPIED_TYPES), or TYPE if it is
3328 not associated with OBJFILE. */
3331 copy_type_recursive (struct objfile *objfile,
3333 htab_t copied_types)
3335 struct type_pair *stored, pair;
3337 struct type *new_type;
3339 if (! TYPE_OBJFILE_OWNED (type))
3342 /* This type shouldn't be pointing to any types in other objfiles;
3343 if it did, the type might disappear unexpectedly. */
3344 gdb_assert (TYPE_OBJFILE (type) == objfile);
3347 slot = htab_find_slot (copied_types, &pair, INSERT);
3349 return ((struct type_pair *) *slot)->new;
3351 new_type = alloc_type_arch (get_type_arch (type));
3353 /* We must add the new type to the hash table immediately, in case
3354 we encounter this type again during a recursive call below. */
3356 = obstack_alloc (&objfile->objfile_obstack, sizeof (struct type_pair));
3358 stored->new = new_type;
3361 /* Copy the common fields of types. For the main type, we simply
3362 copy the entire thing and then update specific fields as needed. */
3363 *TYPE_MAIN_TYPE (new_type) = *TYPE_MAIN_TYPE (type);
3364 TYPE_OBJFILE_OWNED (new_type) = 0;
3365 TYPE_OWNER (new_type).gdbarch = get_type_arch (type);
3367 if (TYPE_NAME (type))
3368 TYPE_NAME (new_type) = xstrdup (TYPE_NAME (type));
3369 if (TYPE_TAG_NAME (type))
3370 TYPE_TAG_NAME (new_type) = xstrdup (TYPE_TAG_NAME (type));
3372 TYPE_INSTANCE_FLAGS (new_type) = TYPE_INSTANCE_FLAGS (type);
3373 TYPE_LENGTH (new_type) = TYPE_LENGTH (type);
3375 /* Copy the fields. */
3376 if (TYPE_NFIELDS (type))
3380 nfields = TYPE_NFIELDS (type);
3381 TYPE_FIELDS (new_type) = XCALLOC (nfields, struct field);
3382 for (i = 0; i < nfields; i++)
3384 TYPE_FIELD_ARTIFICIAL (new_type, i) =
3385 TYPE_FIELD_ARTIFICIAL (type, i);
3386 TYPE_FIELD_BITSIZE (new_type, i) = TYPE_FIELD_BITSIZE (type, i);
3387 if (TYPE_FIELD_TYPE (type, i))
3388 TYPE_FIELD_TYPE (new_type, i)
3389 = copy_type_recursive (objfile, TYPE_FIELD_TYPE (type, i),
3391 if (TYPE_FIELD_NAME (type, i))
3392 TYPE_FIELD_NAME (new_type, i) =
3393 xstrdup (TYPE_FIELD_NAME (type, i));
3394 switch (TYPE_FIELD_LOC_KIND (type, i))
3396 case FIELD_LOC_KIND_BITPOS:
3397 SET_FIELD_BITPOS (TYPE_FIELD (new_type, i),
3398 TYPE_FIELD_BITPOS (type, i));
3400 case FIELD_LOC_KIND_PHYSADDR:
3401 SET_FIELD_PHYSADDR (TYPE_FIELD (new_type, i),
3402 TYPE_FIELD_STATIC_PHYSADDR (type, i));
3404 case FIELD_LOC_KIND_PHYSNAME:
3405 SET_FIELD_PHYSNAME (TYPE_FIELD (new_type, i),
3406 xstrdup (TYPE_FIELD_STATIC_PHYSNAME (type,
3410 internal_error (__FILE__, __LINE__,
3411 _("Unexpected type field location kind: %d"),
3412 TYPE_FIELD_LOC_KIND (type, i));
3417 /* For range types, copy the bounds information. */
3418 if (TYPE_CODE (type) == TYPE_CODE_RANGE)
3420 TYPE_RANGE_DATA (new_type) = xmalloc (sizeof (struct range_bounds));
3421 *TYPE_RANGE_DATA (new_type) = *TYPE_RANGE_DATA (type);
3424 /* Copy pointers to other types. */
3425 if (TYPE_TARGET_TYPE (type))
3426 TYPE_TARGET_TYPE (new_type) =
3427 copy_type_recursive (objfile,
3428 TYPE_TARGET_TYPE (type),
3430 if (TYPE_VPTR_BASETYPE (type))
3431 TYPE_VPTR_BASETYPE (new_type) =
3432 copy_type_recursive (objfile,
3433 TYPE_VPTR_BASETYPE (type),
3435 /* Maybe copy the type_specific bits.
3437 NOTE drow/2005-12-09: We do not copy the C++-specific bits like
3438 base classes and methods. There's no fundamental reason why we
3439 can't, but at the moment it is not needed. */
3441 if (TYPE_CODE (type) == TYPE_CODE_FLT)
3442 TYPE_FLOATFORMAT (new_type) = TYPE_FLOATFORMAT (type);
3443 else if (TYPE_CODE (type) == TYPE_CODE_STRUCT
3444 || TYPE_CODE (type) == TYPE_CODE_UNION
3445 || TYPE_CODE (type) == TYPE_CODE_NAMESPACE)
3446 INIT_CPLUS_SPECIFIC (new_type);
3451 /* Make a copy of the given TYPE, except that the pointer & reference
3452 types are not preserved.
3454 This function assumes that the given type has an associated objfile.
3455 This objfile is used to allocate the new type. */
3458 copy_type (const struct type *type)
3460 struct type *new_type;
3462 gdb_assert (TYPE_OBJFILE_OWNED (type));
3464 new_type = alloc_type_copy (type);
3465 TYPE_INSTANCE_FLAGS (new_type) = TYPE_INSTANCE_FLAGS (type);
3466 TYPE_LENGTH (new_type) = TYPE_LENGTH (type);
3467 memcpy (TYPE_MAIN_TYPE (new_type), TYPE_MAIN_TYPE (type),
3468 sizeof (struct main_type));
3474 /* Helper functions to initialize architecture-specific types. */
3476 /* Allocate a type structure associated with GDBARCH and set its
3477 CODE, LENGTH, and NAME fields. */
3479 arch_type (struct gdbarch *gdbarch,
3480 enum type_code code, int length, char *name)
3484 type = alloc_type_arch (gdbarch);
3485 TYPE_CODE (type) = code;
3486 TYPE_LENGTH (type) = length;
3489 TYPE_NAME (type) = xstrdup (name);
3494 /* Allocate a TYPE_CODE_INT type structure associated with GDBARCH.
3495 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
3496 the type's TYPE_UNSIGNED flag. NAME is the type name. */
3498 arch_integer_type (struct gdbarch *gdbarch,
3499 int bit, int unsigned_p, char *name)
3503 t = arch_type (gdbarch, TYPE_CODE_INT, bit / TARGET_CHAR_BIT, name);
3505 TYPE_UNSIGNED (t) = 1;
3506 if (name && strcmp (name, "char") == 0)
3507 TYPE_NOSIGN (t) = 1;
3512 /* Allocate a TYPE_CODE_CHAR type structure associated with GDBARCH.
3513 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
3514 the type's TYPE_UNSIGNED flag. NAME is the type name. */
3516 arch_character_type (struct gdbarch *gdbarch,
3517 int bit, int unsigned_p, char *name)
3521 t = arch_type (gdbarch, TYPE_CODE_CHAR, bit / TARGET_CHAR_BIT, name);
3523 TYPE_UNSIGNED (t) = 1;
3528 /* Allocate a TYPE_CODE_BOOL type structure associated with GDBARCH.
3529 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
3530 the type's TYPE_UNSIGNED flag. NAME is the type name. */
3532 arch_boolean_type (struct gdbarch *gdbarch,
3533 int bit, int unsigned_p, char *name)
3537 t = arch_type (gdbarch, TYPE_CODE_BOOL, bit / TARGET_CHAR_BIT, name);
3539 TYPE_UNSIGNED (t) = 1;
3544 /* Allocate a TYPE_CODE_FLT type structure associated with GDBARCH.
3545 BIT is the type size in bits; if BIT equals -1, the size is
3546 determined by the floatformat. NAME is the type name. Set the
3547 TYPE_FLOATFORMAT from FLOATFORMATS. */
3549 arch_float_type (struct gdbarch *gdbarch,
3550 int bit, char *name, const struct floatformat **floatformats)
3556 gdb_assert (floatformats != NULL);
3557 gdb_assert (floatformats[0] != NULL && floatformats[1] != NULL);
3558 bit = floatformats[0]->totalsize;
3560 gdb_assert (bit >= 0);
3562 t = arch_type (gdbarch, TYPE_CODE_FLT, bit / TARGET_CHAR_BIT, name);
3563 TYPE_FLOATFORMAT (t) = floatformats;
3567 /* Allocate a TYPE_CODE_COMPLEX type structure associated with GDBARCH.
3568 NAME is the type name. TARGET_TYPE is the component float type. */
3570 arch_complex_type (struct gdbarch *gdbarch,
3571 char *name, struct type *target_type)
3575 t = arch_type (gdbarch, TYPE_CODE_COMPLEX,
3576 2 * TYPE_LENGTH (target_type), name);
3577 TYPE_TARGET_TYPE (t) = target_type;
3581 /* Allocate a TYPE_CODE_FLAGS type structure associated with GDBARCH.
3582 NAME is the type name. LENGTH is the size of the flag word in bytes. */
3584 arch_flags_type (struct gdbarch *gdbarch, char *name, int length)
3586 int nfields = length * TARGET_CHAR_BIT;
3589 type = arch_type (gdbarch, TYPE_CODE_FLAGS, length, name);
3590 TYPE_UNSIGNED (type) = 1;
3591 TYPE_NFIELDS (type) = nfields;
3592 TYPE_FIELDS (type) = TYPE_ZALLOC (type, nfields * sizeof (struct field));
3597 /* Add field to TYPE_CODE_FLAGS type TYPE to indicate the bit at
3598 position BITPOS is called NAME. */
3600 append_flags_type_flag (struct type *type, int bitpos, char *name)
3602 gdb_assert (TYPE_CODE (type) == TYPE_CODE_FLAGS);
3603 gdb_assert (bitpos < TYPE_NFIELDS (type));
3604 gdb_assert (bitpos >= 0);
3608 TYPE_FIELD_NAME (type, bitpos) = xstrdup (name);
3609 TYPE_FIELD_BITPOS (type, bitpos) = bitpos;
3613 /* Don't show this field to the user. */
3614 TYPE_FIELD_BITPOS (type, bitpos) = -1;
3618 /* Allocate a TYPE_CODE_STRUCT or TYPE_CODE_UNION type structure (as
3619 specified by CODE) associated with GDBARCH. NAME is the type name. */
3621 arch_composite_type (struct gdbarch *gdbarch, char *name, enum type_code code)
3625 gdb_assert (code == TYPE_CODE_STRUCT || code == TYPE_CODE_UNION);
3626 t = arch_type (gdbarch, code, 0, NULL);
3627 TYPE_TAG_NAME (t) = name;
3628 INIT_CPLUS_SPECIFIC (t);
3632 /* Add new field with name NAME and type FIELD to composite type T.
3633 Do not set the field's position or adjust the type's length;
3634 the caller should do so. Return the new field. */
3636 append_composite_type_field_raw (struct type *t, char *name,
3641 TYPE_NFIELDS (t) = TYPE_NFIELDS (t) + 1;
3642 TYPE_FIELDS (t) = xrealloc (TYPE_FIELDS (t),
3643 sizeof (struct field) * TYPE_NFIELDS (t));
3644 f = &(TYPE_FIELDS (t)[TYPE_NFIELDS (t) - 1]);
3645 memset (f, 0, sizeof f[0]);
3646 FIELD_TYPE (f[0]) = field;
3647 FIELD_NAME (f[0]) = name;
3651 /* Add new field with name NAME and type FIELD to composite type T.
3652 ALIGNMENT (if non-zero) specifies the minimum field alignment. */
3654 append_composite_type_field_aligned (struct type *t, char *name,
3655 struct type *field, int alignment)
3657 struct field *f = append_composite_type_field_raw (t, name, field);
3659 if (TYPE_CODE (t) == TYPE_CODE_UNION)
3661 if (TYPE_LENGTH (t) < TYPE_LENGTH (field))
3662 TYPE_LENGTH (t) = TYPE_LENGTH (field);
3664 else if (TYPE_CODE (t) == TYPE_CODE_STRUCT)
3666 TYPE_LENGTH (t) = TYPE_LENGTH (t) + TYPE_LENGTH (field);
3667 if (TYPE_NFIELDS (t) > 1)
3669 FIELD_BITPOS (f[0]) = (FIELD_BITPOS (f[-1])
3670 + (TYPE_LENGTH (FIELD_TYPE (f[-1]))
3671 * TARGET_CHAR_BIT));
3677 alignment *= TARGET_CHAR_BIT;
3678 left = FIELD_BITPOS (f[0]) % alignment;
3682 FIELD_BITPOS (f[0]) += (alignment - left);
3683 TYPE_LENGTH (t) += (alignment - left) / TARGET_CHAR_BIT;
3690 /* Add new field with name NAME and type FIELD to composite type T. */
3692 append_composite_type_field (struct type *t, char *name,
3695 append_composite_type_field_aligned (t, name, field, 0);
3699 static struct gdbarch_data *gdbtypes_data;
3701 const struct builtin_type *
3702 builtin_type (struct gdbarch *gdbarch)
3704 return gdbarch_data (gdbarch, gdbtypes_data);
3708 gdbtypes_post_init (struct gdbarch *gdbarch)
3710 struct builtin_type *builtin_type
3711 = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct builtin_type);
3714 builtin_type->builtin_void
3715 = arch_type (gdbarch, TYPE_CODE_VOID, 1, "void");
3716 builtin_type->builtin_char
3717 = arch_integer_type (gdbarch, TARGET_CHAR_BIT,
3718 !gdbarch_char_signed (gdbarch), "char");
3719 builtin_type->builtin_signed_char
3720 = arch_integer_type (gdbarch, TARGET_CHAR_BIT,
3722 builtin_type->builtin_unsigned_char
3723 = arch_integer_type (gdbarch, TARGET_CHAR_BIT,
3724 1, "unsigned char");
3725 builtin_type->builtin_short
3726 = arch_integer_type (gdbarch, gdbarch_short_bit (gdbarch),
3728 builtin_type->builtin_unsigned_short
3729 = arch_integer_type (gdbarch, gdbarch_short_bit (gdbarch),
3730 1, "unsigned short");
3731 builtin_type->builtin_int
3732 = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch),
3734 builtin_type->builtin_unsigned_int
3735 = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch),
3737 builtin_type->builtin_long
3738 = arch_integer_type (gdbarch, gdbarch_long_bit (gdbarch),
3740 builtin_type->builtin_unsigned_long
3741 = arch_integer_type (gdbarch, gdbarch_long_bit (gdbarch),
3742 1, "unsigned long");
3743 builtin_type->builtin_long_long
3744 = arch_integer_type (gdbarch, gdbarch_long_long_bit (gdbarch),
3746 builtin_type->builtin_unsigned_long_long
3747 = arch_integer_type (gdbarch, gdbarch_long_long_bit (gdbarch),
3748 1, "unsigned long long");
3749 builtin_type->builtin_float
3750 = arch_float_type (gdbarch, gdbarch_float_bit (gdbarch),
3751 "float", gdbarch_float_format (gdbarch));
3752 builtin_type->builtin_double
3753 = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch),
3754 "double", gdbarch_double_format (gdbarch));
3755 builtin_type->builtin_long_double
3756 = arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch),
3757 "long double", gdbarch_long_double_format (gdbarch));
3758 builtin_type->builtin_complex
3759 = arch_complex_type (gdbarch, "complex",
3760 builtin_type->builtin_float);
3761 builtin_type->builtin_double_complex
3762 = arch_complex_type (gdbarch, "double complex",
3763 builtin_type->builtin_double);
3764 builtin_type->builtin_string
3765 = arch_type (gdbarch, TYPE_CODE_STRING, 1, "string");
3766 builtin_type->builtin_bool
3767 = arch_type (gdbarch, TYPE_CODE_BOOL, 1, "bool");
3769 /* The following three are about decimal floating point types, which
3770 are 32-bits, 64-bits and 128-bits respectively. */
3771 builtin_type->builtin_decfloat
3772 = arch_type (gdbarch, TYPE_CODE_DECFLOAT, 32 / 8, "_Decimal32");
3773 builtin_type->builtin_decdouble
3774 = arch_type (gdbarch, TYPE_CODE_DECFLOAT, 64 / 8, "_Decimal64");
3775 builtin_type->builtin_declong
3776 = arch_type (gdbarch, TYPE_CODE_DECFLOAT, 128 / 8, "_Decimal128");
3778 /* "True" character types. */
3779 builtin_type->builtin_true_char
3780 = arch_character_type (gdbarch, TARGET_CHAR_BIT, 0, "true character");
3781 builtin_type->builtin_true_unsigned_char
3782 = arch_character_type (gdbarch, TARGET_CHAR_BIT, 1, "true character");
3784 /* Fixed-size integer types. */
3785 builtin_type->builtin_int0
3786 = arch_integer_type (gdbarch, 0, 0, "int0_t");
3787 builtin_type->builtin_int8
3788 = arch_integer_type (gdbarch, 8, 0, "int8_t");
3789 builtin_type->builtin_uint8
3790 = arch_integer_type (gdbarch, 8, 1, "uint8_t");
3791 builtin_type->builtin_int16
3792 = arch_integer_type (gdbarch, 16, 0, "int16_t");
3793 builtin_type->builtin_uint16
3794 = arch_integer_type (gdbarch, 16, 1, "uint16_t");
3795 builtin_type->builtin_int32
3796 = arch_integer_type (gdbarch, 32, 0, "int32_t");
3797 builtin_type->builtin_uint32
3798 = arch_integer_type (gdbarch, 32, 1, "uint32_t");
3799 builtin_type->builtin_int64
3800 = arch_integer_type (gdbarch, 64, 0, "int64_t");
3801 builtin_type->builtin_uint64
3802 = arch_integer_type (gdbarch, 64, 1, "uint64_t");
3803 builtin_type->builtin_int128
3804 = arch_integer_type (gdbarch, 128, 0, "int128_t");
3805 builtin_type->builtin_uint128
3806 = arch_integer_type (gdbarch, 128, 1, "uint128_t");
3807 TYPE_INSTANCE_FLAGS (builtin_type->builtin_int8) |=
3808 TYPE_INSTANCE_FLAG_NOTTEXT;
3809 TYPE_INSTANCE_FLAGS (builtin_type->builtin_uint8) |=
3810 TYPE_INSTANCE_FLAG_NOTTEXT;
3812 /* Wide character types. */
3813 builtin_type->builtin_char16
3814 = arch_integer_type (gdbarch, 16, 0, "char16_t");
3815 builtin_type->builtin_char32
3816 = arch_integer_type (gdbarch, 32, 0, "char32_t");
3819 /* Default data/code pointer types. */
3820 builtin_type->builtin_data_ptr
3821 = lookup_pointer_type (builtin_type->builtin_void);
3822 builtin_type->builtin_func_ptr
3823 = lookup_pointer_type (lookup_function_type (builtin_type->builtin_void));
3824 builtin_type->builtin_func_func
3825 = lookup_function_type (builtin_type->builtin_func_ptr);
3827 /* This type represents a GDB internal function. */
3828 builtin_type->internal_fn
3829 = arch_type (gdbarch, TYPE_CODE_INTERNAL_FUNCTION, 0,
3830 "<internal function>");
3832 return builtin_type;
3836 /* This set of objfile-based types is intended to be used by symbol
3837 readers as basic types. */
3839 static const struct objfile_data *objfile_type_data;
3841 const struct objfile_type *
3842 objfile_type (struct objfile *objfile)
3844 struct gdbarch *gdbarch;
3845 struct objfile_type *objfile_type
3846 = objfile_data (objfile, objfile_type_data);
3849 return objfile_type;
3851 objfile_type = OBSTACK_CALLOC (&objfile->objfile_obstack,
3852 1, struct objfile_type);
3854 /* Use the objfile architecture to determine basic type properties. */
3855 gdbarch = get_objfile_arch (objfile);
3858 objfile_type->builtin_void
3859 = init_type (TYPE_CODE_VOID, 1,
3863 objfile_type->builtin_char
3864 = init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
3866 | (gdbarch_char_signed (gdbarch) ? 0 : TYPE_FLAG_UNSIGNED)),
3868 objfile_type->builtin_signed_char
3869 = init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
3871 "signed char", objfile);
3872 objfile_type->builtin_unsigned_char
3873 = init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
3875 "unsigned char", objfile);
3876 objfile_type->builtin_short
3877 = init_type (TYPE_CODE_INT,
3878 gdbarch_short_bit (gdbarch) / TARGET_CHAR_BIT,
3879 0, "short", objfile);
3880 objfile_type->builtin_unsigned_short
3881 = init_type (TYPE_CODE_INT,
3882 gdbarch_short_bit (gdbarch) / TARGET_CHAR_BIT,
3883 TYPE_FLAG_UNSIGNED, "unsigned short", objfile);
3884 objfile_type->builtin_int
3885 = init_type (TYPE_CODE_INT,
3886 gdbarch_int_bit (gdbarch) / TARGET_CHAR_BIT,
3888 objfile_type->builtin_unsigned_int
3889 = init_type (TYPE_CODE_INT,
3890 gdbarch_int_bit (gdbarch) / TARGET_CHAR_BIT,
3891 TYPE_FLAG_UNSIGNED, "unsigned int", objfile);
3892 objfile_type->builtin_long
3893 = init_type (TYPE_CODE_INT,
3894 gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT,
3895 0, "long", objfile);
3896 objfile_type->builtin_unsigned_long
3897 = init_type (TYPE_CODE_INT,
3898 gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT,
3899 TYPE_FLAG_UNSIGNED, "unsigned long", objfile);
3900 objfile_type->builtin_long_long
3901 = init_type (TYPE_CODE_INT,
3902 gdbarch_long_long_bit (gdbarch) / TARGET_CHAR_BIT,
3903 0, "long long", objfile);
3904 objfile_type->builtin_unsigned_long_long
3905 = init_type (TYPE_CODE_INT,
3906 gdbarch_long_long_bit (gdbarch) / TARGET_CHAR_BIT,
3907 TYPE_FLAG_UNSIGNED, "unsigned long long", objfile);
3909 objfile_type->builtin_float
3910 = init_type (TYPE_CODE_FLT,
3911 gdbarch_float_bit (gdbarch) / TARGET_CHAR_BIT,
3912 0, "float", objfile);
3913 TYPE_FLOATFORMAT (objfile_type->builtin_float)
3914 = gdbarch_float_format (gdbarch);
3915 objfile_type->builtin_double
3916 = init_type (TYPE_CODE_FLT,
3917 gdbarch_double_bit (gdbarch) / TARGET_CHAR_BIT,
3918 0, "double", objfile);
3919 TYPE_FLOATFORMAT (objfile_type->builtin_double)
3920 = gdbarch_double_format (gdbarch);
3921 objfile_type->builtin_long_double
3922 = init_type (TYPE_CODE_FLT,
3923 gdbarch_long_double_bit (gdbarch) / TARGET_CHAR_BIT,
3924 0, "long double", objfile);
3925 TYPE_FLOATFORMAT (objfile_type->builtin_long_double)
3926 = gdbarch_long_double_format (gdbarch);
3928 /* This type represents a type that was unrecognized in symbol read-in. */
3929 objfile_type->builtin_error
3930 = init_type (TYPE_CODE_ERROR, 0, 0, "<unknown type>", objfile);
3932 /* The following set of types is used for symbols with no
3933 debug information. */
3934 objfile_type->nodebug_text_symbol
3935 = init_type (TYPE_CODE_FUNC, 1, 0,
3936 "<text variable, no debug info>", objfile);
3937 TYPE_TARGET_TYPE (objfile_type->nodebug_text_symbol)
3938 = objfile_type->builtin_int;
3939 objfile_type->nodebug_text_gnu_ifunc_symbol
3940 = init_type (TYPE_CODE_FUNC, 1, TYPE_FLAG_GNU_IFUNC,
3941 "<text gnu-indirect-function variable, no debug info>",
3943 TYPE_TARGET_TYPE (objfile_type->nodebug_text_gnu_ifunc_symbol)
3944 = objfile_type->nodebug_text_symbol;
3945 objfile_type->nodebug_got_plt_symbol
3946 = init_type (TYPE_CODE_PTR, gdbarch_addr_bit (gdbarch) / 8, 0,
3947 "<text from jump slot in .got.plt, no debug info>",
3949 TYPE_TARGET_TYPE (objfile_type->nodebug_got_plt_symbol)
3950 = objfile_type->nodebug_text_symbol;
3951 objfile_type->nodebug_data_symbol
3952 = init_type (TYPE_CODE_INT,
3953 gdbarch_int_bit (gdbarch) / HOST_CHAR_BIT, 0,
3954 "<data variable, no debug info>", objfile);
3955 objfile_type->nodebug_unknown_symbol
3956 = init_type (TYPE_CODE_INT, 1, 0,
3957 "<variable (not text or data), no debug info>", objfile);
3958 objfile_type->nodebug_tls_symbol
3959 = init_type (TYPE_CODE_INT,
3960 gdbarch_int_bit (gdbarch) / HOST_CHAR_BIT, 0,
3961 "<thread local variable, no debug info>", objfile);
3963 /* NOTE: on some targets, addresses and pointers are not necessarily
3964 the same --- for example, on the D10V, pointers are 16 bits long,
3965 but addresses are 32 bits long. See doc/gdbint.texinfo,
3966 ``Pointers Are Not Always Addresses''.
3969 - gdb's `struct type' always describes the target's
3971 - gdb's `struct value' objects should always hold values in
3973 - gdb's CORE_ADDR values are addresses in the unified virtual
3974 address space that the assembler and linker work with. Thus,
3975 since target_read_memory takes a CORE_ADDR as an argument, it
3976 can access any memory on the target, even if the processor has
3977 separate code and data address spaces.
3980 - If v is a value holding a D10V code pointer, its contents are
3981 in target form: a big-endian address left-shifted two bits.
3982 - If p is a D10V pointer type, TYPE_LENGTH (p) == 2, just as
3983 sizeof (void *) == 2 on the target.
3985 In this context, objfile_type->builtin_core_addr is a bit odd:
3986 it's a target type for a value the target will never see. It's
3987 only used to hold the values of (typeless) linker symbols, which
3988 are indeed in the unified virtual address space. */
3990 objfile_type->builtin_core_addr
3991 = init_type (TYPE_CODE_INT,
3992 gdbarch_addr_bit (gdbarch) / 8,
3993 TYPE_FLAG_UNSIGNED, "__CORE_ADDR", objfile);
3995 set_objfile_data (objfile, objfile_type_data, objfile_type);
3996 return objfile_type;
4000 extern void _initialize_gdbtypes (void);
4002 _initialize_gdbtypes (void)
4004 gdbtypes_data = gdbarch_data_register_post_init (gdbtypes_post_init);
4005 objfile_type_data = register_objfile_data ();
4007 add_setshow_zinteger_cmd ("overload", no_class, &overload_debug,
4008 _("Set debugging of C++ overloading."),
4009 _("Show debugging of C++ overloading."),
4010 _("When enabled, ranking of the "
4011 "functions is displayed."),
4013 show_overload_debug,
4014 &setdebuglist, &showdebuglist);
4016 /* Add user knob for controlling resolution of opaque types. */
4017 add_setshow_boolean_cmd ("opaque-type-resolution", class_support,
4018 &opaque_type_resolution,
4019 _("Set resolution of opaque struct/class/union"
4020 " types (if set before loading symbols)."),
4021 _("Show resolution of opaque struct/class/union"
4022 " types (if set before loading symbols)."),
4024 show_opaque_type_resolution,
4025 &setlist, &showlist);