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 unsigned 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 /* Update the length of all the other variants of this type. */
328 chain = TYPE_CHAIN (ntype);
329 while (chain != ntype)
331 TYPE_LENGTH (chain) = TYPE_LENGTH (ntype);
332 chain = TYPE_CHAIN (chain);
338 /* Given a type TYPE, return a type of pointers to that type.
339 May need to construct such a type if this is the first use. */
342 lookup_pointer_type (struct type *type)
344 return make_pointer_type (type, (struct type **) 0);
347 /* Lookup a C++ `reference' to a type TYPE. TYPEPTR, if nonzero,
348 points to a pointer to memory where the reference type should be
349 stored. If *TYPEPTR is zero, update it to point to the reference
350 type we return. We allocate new memory if needed. */
353 make_reference_type (struct type *type, struct type **typeptr)
355 struct type *ntype; /* New type */
358 ntype = TYPE_REFERENCE_TYPE (type);
363 return ntype; /* Don't care about alloc,
364 and have new type. */
365 else if (*typeptr == 0)
367 *typeptr = ntype; /* Tracking alloc, and have new type. */
372 if (typeptr == 0 || *typeptr == 0) /* We'll need to allocate one. */
374 ntype = alloc_type_copy (type);
378 else /* We have storage, but need to reset it. */
381 chain = TYPE_CHAIN (ntype);
383 TYPE_CHAIN (ntype) = chain;
386 TYPE_TARGET_TYPE (ntype) = type;
387 TYPE_REFERENCE_TYPE (type) = ntype;
389 /* FIXME! Assume the machine has only one representation for
390 references, and that it matches the (only) representation for
393 TYPE_LENGTH (ntype) =
394 gdbarch_ptr_bit (get_type_arch (type)) / TARGET_CHAR_BIT;
395 TYPE_CODE (ntype) = TYPE_CODE_REF;
397 if (!TYPE_REFERENCE_TYPE (type)) /* Remember it, if don't have one. */
398 TYPE_REFERENCE_TYPE (type) = ntype;
400 /* Update the length of all the other variants of this type. */
401 chain = TYPE_CHAIN (ntype);
402 while (chain != ntype)
404 TYPE_LENGTH (chain) = TYPE_LENGTH (ntype);
405 chain = TYPE_CHAIN (chain);
411 /* Same as above, but caller doesn't care about memory allocation
415 lookup_reference_type (struct type *type)
417 return make_reference_type (type, (struct type **) 0);
420 /* Lookup a function type that returns type TYPE. TYPEPTR, if
421 nonzero, points to a pointer to memory where the function type
422 should be stored. If *TYPEPTR is zero, update it to point to the
423 function type we return. We allocate new memory if needed. */
426 make_function_type (struct type *type, struct type **typeptr)
428 struct type *ntype; /* New type */
430 if (typeptr == 0 || *typeptr == 0) /* We'll need to allocate one. */
432 ntype = alloc_type_copy (type);
436 else /* We have storage, but need to reset it. */
442 TYPE_TARGET_TYPE (ntype) = type;
444 TYPE_LENGTH (ntype) = 1;
445 TYPE_CODE (ntype) = TYPE_CODE_FUNC;
447 INIT_FUNC_SPECIFIC (ntype);
453 /* Given a type TYPE, return a type of functions that return that type.
454 May need to construct such a type if this is the first use. */
457 lookup_function_type (struct type *type)
459 return make_function_type (type, (struct type **) 0);
462 /* Given a type TYPE and argument types, return the appropriate
463 function type. If the final type in PARAM_TYPES is NULL, make a
467 lookup_function_type_with_arguments (struct type *type,
469 struct type **param_types)
471 struct type *fn = make_function_type (type, (struct type **) 0);
476 if (param_types[nparams - 1] == NULL)
479 TYPE_VARARGS (fn) = 1;
481 else if (TYPE_CODE (check_typedef (param_types[nparams - 1]))
485 /* Caller should have ensured this. */
486 gdb_assert (nparams == 0);
487 TYPE_PROTOTYPED (fn) = 1;
491 TYPE_NFIELDS (fn) = nparams;
492 TYPE_FIELDS (fn) = TYPE_ZALLOC (fn, nparams * sizeof (struct field));
493 for (i = 0; i < nparams; ++i)
494 TYPE_FIELD_TYPE (fn, i) = param_types[i];
499 /* Identify address space identifier by name --
500 return the integer flag defined in gdbtypes.h. */
502 address_space_name_to_int (struct gdbarch *gdbarch, char *space_identifier)
506 /* Check for known address space delimiters. */
507 if (!strcmp (space_identifier, "code"))
508 return TYPE_INSTANCE_FLAG_CODE_SPACE;
509 else if (!strcmp (space_identifier, "data"))
510 return TYPE_INSTANCE_FLAG_DATA_SPACE;
511 else if (gdbarch_address_class_name_to_type_flags_p (gdbarch)
512 && gdbarch_address_class_name_to_type_flags (gdbarch,
517 error (_("Unknown address space specifier: \"%s\""), space_identifier);
520 /* Identify address space identifier by integer flag as defined in
521 gdbtypes.h -- return the string version of the adress space name. */
524 address_space_int_to_name (struct gdbarch *gdbarch, int space_flag)
526 if (space_flag & TYPE_INSTANCE_FLAG_CODE_SPACE)
528 else if (space_flag & TYPE_INSTANCE_FLAG_DATA_SPACE)
530 else if ((space_flag & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL)
531 && gdbarch_address_class_type_flags_to_name_p (gdbarch))
532 return gdbarch_address_class_type_flags_to_name (gdbarch, space_flag);
537 /* Create a new type with instance flags NEW_FLAGS, based on TYPE.
539 If STORAGE is non-NULL, create the new type instance there.
540 STORAGE must be in the same obstack as TYPE. */
543 make_qualified_type (struct type *type, int new_flags,
544 struct type *storage)
551 if (TYPE_INSTANCE_FLAGS (ntype) == new_flags)
553 ntype = TYPE_CHAIN (ntype);
555 while (ntype != type);
557 /* Create a new type instance. */
559 ntype = alloc_type_instance (type);
562 /* If STORAGE was provided, it had better be in the same objfile
563 as TYPE. Otherwise, we can't link it into TYPE's cv chain:
564 if one objfile is freed and the other kept, we'd have
565 dangling pointers. */
566 gdb_assert (TYPE_OBJFILE (type) == TYPE_OBJFILE (storage));
569 TYPE_MAIN_TYPE (ntype) = TYPE_MAIN_TYPE (type);
570 TYPE_CHAIN (ntype) = ntype;
573 /* Pointers or references to the original type are not relevant to
575 TYPE_POINTER_TYPE (ntype) = (struct type *) 0;
576 TYPE_REFERENCE_TYPE (ntype) = (struct type *) 0;
578 /* Chain the new qualified type to the old type. */
579 TYPE_CHAIN (ntype) = TYPE_CHAIN (type);
580 TYPE_CHAIN (type) = ntype;
582 /* Now set the instance flags and return the new type. */
583 TYPE_INSTANCE_FLAGS (ntype) = new_flags;
585 /* Set length of new type to that of the original type. */
586 TYPE_LENGTH (ntype) = TYPE_LENGTH (type);
591 /* Make an address-space-delimited variant of a type -- a type that
592 is identical to the one supplied except that it has an address
593 space attribute attached to it (such as "code" or "data").
595 The space attributes "code" and "data" are for Harvard
596 architectures. The address space attributes are for architectures
597 which have alternately sized pointers or pointers with alternate
601 make_type_with_address_space (struct type *type, int space_flag)
603 int new_flags = ((TYPE_INSTANCE_FLAGS (type)
604 & ~(TYPE_INSTANCE_FLAG_CODE_SPACE
605 | TYPE_INSTANCE_FLAG_DATA_SPACE
606 | TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL))
609 return make_qualified_type (type, new_flags, NULL);
612 /* Make a "c-v" variant of a type -- a type that is identical to the
613 one supplied except that it may have const or volatile attributes
614 CNST is a flag for setting the const attribute
615 VOLTL is a flag for setting the volatile attribute
616 TYPE is the base type whose variant we are creating.
618 If TYPEPTR and *TYPEPTR are non-zero, then *TYPEPTR points to
619 storage to hold the new qualified type; *TYPEPTR and TYPE must be
620 in the same objfile. Otherwise, allocate fresh memory for the new
621 type whereever TYPE lives. If TYPEPTR is non-zero, set it to the
622 new type we construct. */
624 make_cv_type (int cnst, int voltl,
626 struct type **typeptr)
628 struct type *ntype; /* New type */
630 int new_flags = (TYPE_INSTANCE_FLAGS (type)
631 & ~(TYPE_INSTANCE_FLAG_CONST
632 | TYPE_INSTANCE_FLAG_VOLATILE));
635 new_flags |= TYPE_INSTANCE_FLAG_CONST;
638 new_flags |= TYPE_INSTANCE_FLAG_VOLATILE;
640 if (typeptr && *typeptr != NULL)
642 /* TYPE and *TYPEPTR must be in the same objfile. We can't have
643 a C-V variant chain that threads across objfiles: if one
644 objfile gets freed, then the other has a broken C-V chain.
646 This code used to try to copy over the main type from TYPE to
647 *TYPEPTR if they were in different objfiles, but that's
648 wrong, too: TYPE may have a field list or member function
649 lists, which refer to types of their own, etc. etc. The
650 whole shebang would need to be copied over recursively; you
651 can't have inter-objfile pointers. The only thing to do is
652 to leave stub types as stub types, and look them up afresh by
653 name each time you encounter them. */
654 gdb_assert (TYPE_OBJFILE (*typeptr) == TYPE_OBJFILE (type));
657 ntype = make_qualified_type (type, new_flags,
658 typeptr ? *typeptr : NULL);
666 /* Replace the contents of ntype with the type *type. This changes the
667 contents, rather than the pointer for TYPE_MAIN_TYPE (ntype); thus
668 the changes are propogated to all types in the TYPE_CHAIN.
670 In order to build recursive types, it's inevitable that we'll need
671 to update types in place --- but this sort of indiscriminate
672 smashing is ugly, and needs to be replaced with something more
673 controlled. TYPE_MAIN_TYPE is a step in this direction; it's not
674 clear if more steps are needed. */
676 replace_type (struct type *ntype, struct type *type)
680 /* These two types had better be in the same objfile. Otherwise,
681 the assignment of one type's main type structure to the other
682 will produce a type with references to objects (names; field
683 lists; etc.) allocated on an objfile other than its own. */
684 gdb_assert (TYPE_OBJFILE (ntype) == TYPE_OBJFILE (ntype));
686 *TYPE_MAIN_TYPE (ntype) = *TYPE_MAIN_TYPE (type);
688 /* The type length is not a part of the main type. Update it for
689 each type on the variant chain. */
693 /* Assert that this element of the chain has no address-class bits
694 set in its flags. Such type variants might have type lengths
695 which are supposed to be different from the non-address-class
696 variants. This assertion shouldn't ever be triggered because
697 symbol readers which do construct address-class variants don't
698 call replace_type(). */
699 gdb_assert (TYPE_ADDRESS_CLASS_ALL (chain) == 0);
701 TYPE_LENGTH (chain) = TYPE_LENGTH (type);
702 chain = TYPE_CHAIN (chain);
704 while (ntype != chain);
706 /* Assert that the two types have equivalent instance qualifiers.
707 This should be true for at least all of our debug readers. */
708 gdb_assert (TYPE_INSTANCE_FLAGS (ntype) == TYPE_INSTANCE_FLAGS (type));
711 /* Implement direct support for MEMBER_TYPE in GNU C++.
712 May need to construct such a type if this is the first use.
713 The TYPE is the type of the member. The DOMAIN is the type
714 of the aggregate that the member belongs to. */
717 lookup_memberptr_type (struct type *type, struct type *domain)
721 mtype = alloc_type_copy (type);
722 smash_to_memberptr_type (mtype, domain, type);
726 /* Return a pointer-to-method type, for a method of type TO_TYPE. */
729 lookup_methodptr_type (struct type *to_type)
733 mtype = alloc_type_copy (to_type);
734 smash_to_methodptr_type (mtype, to_type);
738 /* Allocate a stub method whose return type is TYPE. This apparently
739 happens for speed of symbol reading, since parsing out the
740 arguments to the method is cpu-intensive, the way we are doing it.
741 So, we will fill in arguments later. This always returns a fresh
745 allocate_stub_method (struct type *type)
749 mtype = alloc_type_copy (type);
750 TYPE_CODE (mtype) = TYPE_CODE_METHOD;
751 TYPE_LENGTH (mtype) = 1;
752 TYPE_STUB (mtype) = 1;
753 TYPE_TARGET_TYPE (mtype) = type;
754 /* _DOMAIN_TYPE (mtype) = unknown yet */
758 /* Create a range type using either a blank type supplied in
759 RESULT_TYPE, or creating a new type, inheriting the objfile from
762 Indices will be of type INDEX_TYPE, and will range from LOW_BOUND
763 to HIGH_BOUND, inclusive.
765 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
766 sure it is TYPE_CODE_UNDEF before we bash it into a range type? */
769 create_range_type (struct type *result_type, struct type *index_type,
770 LONGEST low_bound, LONGEST high_bound)
772 if (result_type == NULL)
773 result_type = alloc_type_copy (index_type);
774 TYPE_CODE (result_type) = TYPE_CODE_RANGE;
775 TYPE_TARGET_TYPE (result_type) = index_type;
776 if (TYPE_STUB (index_type))
777 TYPE_TARGET_STUB (result_type) = 1;
779 TYPE_LENGTH (result_type) = TYPE_LENGTH (check_typedef (index_type));
780 TYPE_RANGE_DATA (result_type) = (struct range_bounds *)
781 TYPE_ZALLOC (result_type, sizeof (struct range_bounds));
782 TYPE_LOW_BOUND (result_type) = low_bound;
783 TYPE_HIGH_BOUND (result_type) = high_bound;
786 TYPE_UNSIGNED (result_type) = 1;
791 /* Set *LOWP and *HIGHP to the lower and upper bounds of discrete type
792 TYPE. Return 1 if type is a range type, 0 if it is discrete (and
793 bounds will fit in LONGEST), or -1 otherwise. */
796 get_discrete_bounds (struct type *type, LONGEST *lowp, LONGEST *highp)
798 CHECK_TYPEDEF (type);
799 switch (TYPE_CODE (type))
801 case TYPE_CODE_RANGE:
802 *lowp = TYPE_LOW_BOUND (type);
803 *highp = TYPE_HIGH_BOUND (type);
806 if (TYPE_NFIELDS (type) > 0)
808 /* The enums may not be sorted by value, so search all
812 *lowp = *highp = TYPE_FIELD_ENUMVAL (type, 0);
813 for (i = 0; i < TYPE_NFIELDS (type); i++)
815 if (TYPE_FIELD_ENUMVAL (type, i) < *lowp)
816 *lowp = TYPE_FIELD_ENUMVAL (type, i);
817 if (TYPE_FIELD_ENUMVAL (type, i) > *highp)
818 *highp = TYPE_FIELD_ENUMVAL (type, i);
821 /* Set unsigned indicator if warranted. */
824 TYPE_UNSIGNED (type) = 1;
838 if (TYPE_LENGTH (type) > sizeof (LONGEST)) /* Too big */
840 if (!TYPE_UNSIGNED (type))
842 *lowp = -(1 << (TYPE_LENGTH (type) * TARGET_CHAR_BIT - 1));
846 /* ... fall through for unsigned ints ... */
849 /* This round-about calculation is to avoid shifting by
850 TYPE_LENGTH (type) * TARGET_CHAR_BIT, which will not work
851 if TYPE_LENGTH (type) == sizeof (LONGEST). */
852 *highp = 1 << (TYPE_LENGTH (type) * TARGET_CHAR_BIT - 1);
853 *highp = (*highp - 1) | *highp;
860 /* Assuming TYPE is a simple, non-empty array type, compute its upper
861 and lower bound. Save the low bound into LOW_BOUND if not NULL.
862 Save the high bound into HIGH_BOUND if not NULL.
864 Return 1 if the operation was successful. Return zero otherwise,
865 in which case the values of LOW_BOUND and HIGH_BOUNDS are unmodified.
867 We now simply use get_discrete_bounds call to get the values
868 of the low and high bounds.
869 get_discrete_bounds can return three values:
870 1, meaning that index is a range,
871 0, meaning that index is a discrete type,
872 or -1 for failure. */
875 get_array_bounds (struct type *type, LONGEST *low_bound, LONGEST *high_bound)
877 struct type *index = TYPE_INDEX_TYPE (type);
885 res = get_discrete_bounds (index, &low, &high);
889 /* Check if the array bounds are undefined. */
891 && ((low_bound && TYPE_ARRAY_LOWER_BOUND_IS_UNDEFINED (type))
892 || (high_bound && TYPE_ARRAY_UPPER_BOUND_IS_UNDEFINED (type))))
904 /* Create an array type using either a blank type supplied in
905 RESULT_TYPE, or creating a new type, inheriting the objfile from
908 Elements will be of type ELEMENT_TYPE, the indices will be of type
911 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
912 sure it is TYPE_CODE_UNDEF before we bash it into an array
916 create_array_type (struct type *result_type,
917 struct type *element_type,
918 struct type *range_type)
920 LONGEST low_bound, high_bound;
922 if (result_type == NULL)
923 result_type = alloc_type_copy (range_type);
925 TYPE_CODE (result_type) = TYPE_CODE_ARRAY;
926 TYPE_TARGET_TYPE (result_type) = element_type;
927 if (get_discrete_bounds (range_type, &low_bound, &high_bound) < 0)
928 low_bound = high_bound = 0;
929 CHECK_TYPEDEF (element_type);
930 /* Be careful when setting the array length. Ada arrays can be
931 empty arrays with the high_bound being smaller than the low_bound.
932 In such cases, the array length should be zero. */
933 if (high_bound < low_bound)
934 TYPE_LENGTH (result_type) = 0;
936 TYPE_LENGTH (result_type) =
937 TYPE_LENGTH (element_type) * (high_bound - low_bound + 1);
938 TYPE_NFIELDS (result_type) = 1;
939 TYPE_FIELDS (result_type) =
940 (struct field *) TYPE_ZALLOC (result_type, sizeof (struct field));
941 TYPE_INDEX_TYPE (result_type) = range_type;
942 TYPE_VPTR_FIELDNO (result_type) = -1;
944 /* TYPE_FLAG_TARGET_STUB will take care of zero length arrays. */
945 if (TYPE_LENGTH (result_type) == 0)
946 TYPE_TARGET_STUB (result_type) = 1;
952 lookup_array_range_type (struct type *element_type,
953 int low_bound, int high_bound)
955 struct gdbarch *gdbarch = get_type_arch (element_type);
956 struct type *index_type = builtin_type (gdbarch)->builtin_int;
957 struct type *range_type
958 = create_range_type (NULL, index_type, low_bound, high_bound);
960 return create_array_type (NULL, element_type, range_type);
963 /* Create a string type using either a blank type supplied in
964 RESULT_TYPE, or creating a new type. String types are similar
965 enough to array of char types that we can use create_array_type to
966 build the basic type and then bash it into a string type.
968 For fixed length strings, the range type contains 0 as the lower
969 bound and the length of the string minus one as the upper bound.
971 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
972 sure it is TYPE_CODE_UNDEF before we bash it into a string
976 create_string_type (struct type *result_type,
977 struct type *string_char_type,
978 struct type *range_type)
980 result_type = create_array_type (result_type,
983 TYPE_CODE (result_type) = TYPE_CODE_STRING;
988 lookup_string_range_type (struct type *string_char_type,
989 int low_bound, int high_bound)
991 struct type *result_type;
993 result_type = lookup_array_range_type (string_char_type,
994 low_bound, high_bound);
995 TYPE_CODE (result_type) = TYPE_CODE_STRING;
1000 create_set_type (struct type *result_type, struct type *domain_type)
1002 if (result_type == NULL)
1003 result_type = alloc_type_copy (domain_type);
1005 TYPE_CODE (result_type) = TYPE_CODE_SET;
1006 TYPE_NFIELDS (result_type) = 1;
1007 TYPE_FIELDS (result_type) = TYPE_ZALLOC (result_type, sizeof (struct field));
1009 if (!TYPE_STUB (domain_type))
1011 LONGEST low_bound, high_bound, bit_length;
1013 if (get_discrete_bounds (domain_type, &low_bound, &high_bound) < 0)
1014 low_bound = high_bound = 0;
1015 bit_length = high_bound - low_bound + 1;
1016 TYPE_LENGTH (result_type)
1017 = (bit_length + TARGET_CHAR_BIT - 1) / TARGET_CHAR_BIT;
1019 TYPE_UNSIGNED (result_type) = 1;
1021 TYPE_FIELD_TYPE (result_type, 0) = domain_type;
1026 /* Convert ARRAY_TYPE to a vector type. This may modify ARRAY_TYPE
1027 and any array types nested inside it. */
1030 make_vector_type (struct type *array_type)
1032 struct type *inner_array, *elt_type;
1035 /* Find the innermost array type, in case the array is
1036 multi-dimensional. */
1037 inner_array = array_type;
1038 while (TYPE_CODE (TYPE_TARGET_TYPE (inner_array)) == TYPE_CODE_ARRAY)
1039 inner_array = TYPE_TARGET_TYPE (inner_array);
1041 elt_type = TYPE_TARGET_TYPE (inner_array);
1042 if (TYPE_CODE (elt_type) == TYPE_CODE_INT)
1044 flags = TYPE_INSTANCE_FLAGS (elt_type) | TYPE_INSTANCE_FLAG_NOTTEXT;
1045 elt_type = make_qualified_type (elt_type, flags, NULL);
1046 TYPE_TARGET_TYPE (inner_array) = elt_type;
1049 TYPE_VECTOR (array_type) = 1;
1053 init_vector_type (struct type *elt_type, int n)
1055 struct type *array_type;
1057 array_type = lookup_array_range_type (elt_type, 0, n - 1);
1058 make_vector_type (array_type);
1062 /* Smash TYPE to be a type of pointers to members of DOMAIN with type
1063 TO_TYPE. A member pointer is a wierd thing -- it amounts to a
1064 typed offset into a struct, e.g. "an int at offset 8". A MEMBER
1065 TYPE doesn't include the offset (that's the value of the MEMBER
1066 itself), but does include the structure type into which it points
1069 When "smashing" the type, we preserve the objfile that the old type
1070 pointed to, since we aren't changing where the type is actually
1074 smash_to_memberptr_type (struct type *type, struct type *domain,
1075 struct type *to_type)
1078 TYPE_TARGET_TYPE (type) = to_type;
1079 TYPE_DOMAIN_TYPE (type) = domain;
1080 /* Assume that a data member pointer is the same size as a normal
1083 = gdbarch_ptr_bit (get_type_arch (to_type)) / TARGET_CHAR_BIT;
1084 TYPE_CODE (type) = TYPE_CODE_MEMBERPTR;
1087 /* Smash TYPE to be a type of pointer to methods type TO_TYPE.
1089 When "smashing" the type, we preserve the objfile that the old type
1090 pointed to, since we aren't changing where the type is actually
1094 smash_to_methodptr_type (struct type *type, struct type *to_type)
1097 TYPE_TARGET_TYPE (type) = to_type;
1098 TYPE_DOMAIN_TYPE (type) = TYPE_DOMAIN_TYPE (to_type);
1099 TYPE_LENGTH (type) = cplus_method_ptr_size (to_type);
1100 TYPE_CODE (type) = TYPE_CODE_METHODPTR;
1103 /* Smash TYPE to be a type of method of DOMAIN with type TO_TYPE.
1104 METHOD just means `function that gets an extra "this" argument'.
1106 When "smashing" the type, we preserve the objfile that the old type
1107 pointed to, since we aren't changing where the type is actually
1111 smash_to_method_type (struct type *type, struct type *domain,
1112 struct type *to_type, struct field *args,
1113 int nargs, int varargs)
1116 TYPE_TARGET_TYPE (type) = to_type;
1117 TYPE_DOMAIN_TYPE (type) = domain;
1118 TYPE_FIELDS (type) = args;
1119 TYPE_NFIELDS (type) = nargs;
1121 TYPE_VARARGS (type) = 1;
1122 TYPE_LENGTH (type) = 1; /* In practice, this is never needed. */
1123 TYPE_CODE (type) = TYPE_CODE_METHOD;
1126 /* Return a typename for a struct/union/enum type without "struct ",
1127 "union ", or "enum ". If the type has a NULL name, return NULL. */
1130 type_name_no_tag (const struct type *type)
1132 if (TYPE_TAG_NAME (type) != NULL)
1133 return TYPE_TAG_NAME (type);
1135 /* Is there code which expects this to return the name if there is
1136 no tag name? My guess is that this is mainly used for C++ in
1137 cases where the two will always be the same. */
1138 return TYPE_NAME (type);
1141 /* A wrapper of type_name_no_tag which calls error if the type is anonymous.
1142 Since GCC PR debug/47510 DWARF provides associated information to detect the
1143 anonymous class linkage name from its typedef.
1145 Parameter TYPE should not yet have CHECK_TYPEDEF applied, this function will
1149 type_name_no_tag_or_error (struct type *type)
1151 struct type *saved_type = type;
1153 struct objfile *objfile;
1155 CHECK_TYPEDEF (type);
1157 name = type_name_no_tag (type);
1161 name = type_name_no_tag (saved_type);
1162 objfile = TYPE_OBJFILE (saved_type);
1163 error (_("Invalid anonymous type %s [in module %s], GCC PR debug/47510 bug?"),
1164 name ? name : "<anonymous>", objfile ? objfile->name : "<arch>");
1167 /* Lookup a typedef or primitive type named NAME, visible in lexical
1168 block BLOCK. If NOERR is nonzero, return zero if NAME is not
1169 suitably defined. */
1172 lookup_typename (const struct language_defn *language,
1173 struct gdbarch *gdbarch, const char *name,
1174 const struct block *block, int noerr)
1179 sym = lookup_symbol (name, block, VAR_DOMAIN, 0);
1180 if (sym != NULL && SYMBOL_CLASS (sym) == LOC_TYPEDEF)
1181 return SYMBOL_TYPE (sym);
1183 type = language_lookup_primitive_type_by_name (language, gdbarch, name);
1189 error (_("No type named %s."), name);
1193 lookup_unsigned_typename (const struct language_defn *language,
1194 struct gdbarch *gdbarch, const char *name)
1196 char *uns = alloca (strlen (name) + 10);
1198 strcpy (uns, "unsigned ");
1199 strcpy (uns + 9, name);
1200 return lookup_typename (language, gdbarch, uns, (struct block *) NULL, 0);
1204 lookup_signed_typename (const struct language_defn *language,
1205 struct gdbarch *gdbarch, const char *name)
1208 char *uns = alloca (strlen (name) + 8);
1210 strcpy (uns, "signed ");
1211 strcpy (uns + 7, name);
1212 t = lookup_typename (language, gdbarch, uns, (struct block *) NULL, 1);
1213 /* If we don't find "signed FOO" just try again with plain "FOO". */
1216 return lookup_typename (language, gdbarch, name, (struct block *) NULL, 0);
1219 /* Lookup a structure type named "struct NAME",
1220 visible in lexical block BLOCK. */
1223 lookup_struct (const char *name, struct block *block)
1227 sym = lookup_symbol (name, block, STRUCT_DOMAIN, 0);
1231 error (_("No struct type named %s."), name);
1233 if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_STRUCT)
1235 error (_("This context has class, union or enum %s, not a struct."),
1238 return (SYMBOL_TYPE (sym));
1241 /* Lookup a union type named "union NAME",
1242 visible in lexical block BLOCK. */
1245 lookup_union (const char *name, struct block *block)
1250 sym = lookup_symbol (name, block, STRUCT_DOMAIN, 0);
1253 error (_("No union type named %s."), name);
1255 t = SYMBOL_TYPE (sym);
1257 if (TYPE_CODE (t) == TYPE_CODE_UNION)
1260 /* If we get here, it's not a union. */
1261 error (_("This context has class, struct or enum %s, not a union."),
1266 /* Lookup an enum type named "enum NAME",
1267 visible in lexical block BLOCK. */
1270 lookup_enum (const char *name, struct block *block)
1274 sym = lookup_symbol (name, block, STRUCT_DOMAIN, 0);
1277 error (_("No enum type named %s."), name);
1279 if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_ENUM)
1281 error (_("This context has class, struct or union %s, not an enum."),
1284 return (SYMBOL_TYPE (sym));
1287 /* Lookup a template type named "template NAME<TYPE>",
1288 visible in lexical block BLOCK. */
1291 lookup_template_type (char *name, struct type *type,
1292 struct block *block)
1295 char *nam = (char *)
1296 alloca (strlen (name) + strlen (TYPE_NAME (type)) + 4);
1300 strcat (nam, TYPE_NAME (type));
1301 strcat (nam, " >"); /* FIXME, extra space still introduced in gcc? */
1303 sym = lookup_symbol (nam, block, VAR_DOMAIN, 0);
1307 error (_("No template type named %s."), name);
1309 if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_STRUCT)
1311 error (_("This context has class, union or enum %s, not a struct."),
1314 return (SYMBOL_TYPE (sym));
1317 /* Given a type TYPE, lookup the type of the component of type named
1320 TYPE can be either a struct or union, or a pointer or reference to
1321 a struct or union. If it is a pointer or reference, its target
1322 type is automatically used. Thus '.' and '->' are interchangable,
1323 as specified for the definitions of the expression element types
1324 STRUCTOP_STRUCT and STRUCTOP_PTR.
1326 If NOERR is nonzero, return zero if NAME is not suitably defined.
1327 If NAME is the name of a baseclass type, return that type. */
1330 lookup_struct_elt_type (struct type *type, char *name, int noerr)
1337 CHECK_TYPEDEF (type);
1338 if (TYPE_CODE (type) != TYPE_CODE_PTR
1339 && TYPE_CODE (type) != TYPE_CODE_REF)
1341 type = TYPE_TARGET_TYPE (type);
1344 if (TYPE_CODE (type) != TYPE_CODE_STRUCT
1345 && TYPE_CODE (type) != TYPE_CODE_UNION)
1347 typename = type_to_string (type);
1348 make_cleanup (xfree, typename);
1349 error (_("Type %s is not a structure or union type."), typename);
1353 /* FIXME: This change put in by Michael seems incorrect for the case
1354 where the structure tag name is the same as the member name.
1355 I.e. when doing "ptype bell->bar" for "struct foo { int bar; int
1356 foo; } bell;" Disabled by fnf. */
1360 typename = type_name_no_tag (type);
1361 if (typename != NULL && strcmp (typename, name) == 0)
1366 for (i = TYPE_NFIELDS (type) - 1; i >= TYPE_N_BASECLASSES (type); i--)
1368 const char *t_field_name = TYPE_FIELD_NAME (type, i);
1370 if (t_field_name && (strcmp_iw (t_field_name, name) == 0))
1372 return TYPE_FIELD_TYPE (type, i);
1374 else if (!t_field_name || *t_field_name == '\0')
1376 struct type *subtype
1377 = lookup_struct_elt_type (TYPE_FIELD_TYPE (type, i), name, 1);
1379 if (subtype != NULL)
1384 /* OK, it's not in this class. Recursively check the baseclasses. */
1385 for (i = TYPE_N_BASECLASSES (type) - 1; i >= 0; i--)
1389 t = lookup_struct_elt_type (TYPE_BASECLASS (type, i), name, 1);
1401 typename = type_to_string (type);
1402 make_cleanup (xfree, typename);
1403 error (_("Type %s has no component named %s."), typename, name);
1406 /* Lookup the vptr basetype/fieldno values for TYPE.
1407 If found store vptr_basetype in *BASETYPEP if non-NULL, and return
1408 vptr_fieldno. Also, if found and basetype is from the same objfile,
1410 If not found, return -1 and ignore BASETYPEP.
1411 Callers should be aware that in some cases (for example,
1412 the type or one of its baseclasses is a stub type and we are
1413 debugging a .o file, or the compiler uses DWARF-2 and is not GCC),
1414 this function will not be able to find the
1415 virtual function table pointer, and vptr_fieldno will remain -1 and
1416 vptr_basetype will remain NULL or incomplete. */
1419 get_vptr_fieldno (struct type *type, struct type **basetypep)
1421 CHECK_TYPEDEF (type);
1423 if (TYPE_VPTR_FIELDNO (type) < 0)
1427 /* We must start at zero in case the first (and only) baseclass
1428 is virtual (and hence we cannot share the table pointer). */
1429 for (i = 0; i < TYPE_N_BASECLASSES (type); i++)
1431 struct type *baseclass = check_typedef (TYPE_BASECLASS (type, i));
1433 struct type *basetype;
1435 fieldno = get_vptr_fieldno (baseclass, &basetype);
1438 /* If the type comes from a different objfile we can't cache
1439 it, it may have a different lifetime. PR 2384 */
1440 if (TYPE_OBJFILE (type) == TYPE_OBJFILE (basetype))
1442 TYPE_VPTR_FIELDNO (type) = fieldno;
1443 TYPE_VPTR_BASETYPE (type) = basetype;
1446 *basetypep = basetype;
1457 *basetypep = TYPE_VPTR_BASETYPE (type);
1458 return TYPE_VPTR_FIELDNO (type);
1463 stub_noname_complaint (void)
1465 complaint (&symfile_complaints, _("stub type has NULL name"));
1468 /* Find the real type of TYPE. This function returns the real type,
1469 after removing all layers of typedefs, and completing opaque or stub
1470 types. Completion changes the TYPE argument, but stripping of
1473 Instance flags (e.g. const/volatile) are preserved as typedefs are
1474 stripped. If necessary a new qualified form of the underlying type
1477 NOTE: This will return a typedef if TYPE_TARGET_TYPE for the typedef has
1478 not been computed and we're either in the middle of reading symbols, or
1479 there was no name for the typedef in the debug info.
1481 NOTE: Lookup of opaque types can throw errors for invalid symbol files.
1482 QUITs in the symbol reading code can also throw.
1483 Thus this function can throw an exception.
1485 If TYPE is a TYPE_CODE_TYPEDEF, its length is updated to the length of
1488 If this is a stubbed struct (i.e. declared as struct foo *), see if
1489 we can find a full definition in some other file. If so, copy this
1490 definition, so we can use it in future. There used to be a comment
1491 (but not any code) that if we don't find a full definition, we'd
1492 set a flag so we don't spend time in the future checking the same
1493 type. That would be a mistake, though--we might load in more
1494 symbols which contain a full definition for the type. */
1497 check_typedef (struct type *type)
1499 struct type *orig_type = type;
1500 /* While we're removing typedefs, we don't want to lose qualifiers.
1501 E.g., const/volatile. */
1502 int instance_flags = TYPE_INSTANCE_FLAGS (type);
1506 while (TYPE_CODE (type) == TYPE_CODE_TYPEDEF)
1508 if (!TYPE_TARGET_TYPE (type))
1513 /* It is dangerous to call lookup_symbol if we are currently
1514 reading a symtab. Infinite recursion is one danger. */
1515 if (currently_reading_symtab)
1516 return make_qualified_type (type, instance_flags, NULL);
1518 name = type_name_no_tag (type);
1519 /* FIXME: shouldn't we separately check the TYPE_NAME and
1520 the TYPE_TAG_NAME, and look in STRUCT_DOMAIN and/or
1521 VAR_DOMAIN as appropriate? (this code was written before
1522 TYPE_NAME and TYPE_TAG_NAME were separate). */
1525 stub_noname_complaint ();
1526 return make_qualified_type (type, instance_flags, NULL);
1528 sym = lookup_symbol (name, 0, STRUCT_DOMAIN, 0);
1530 TYPE_TARGET_TYPE (type) = SYMBOL_TYPE (sym);
1531 else /* TYPE_CODE_UNDEF */
1532 TYPE_TARGET_TYPE (type) = alloc_type_arch (get_type_arch (type));
1534 type = TYPE_TARGET_TYPE (type);
1536 /* Preserve the instance flags as we traverse down the typedef chain.
1538 Handling address spaces/classes is nasty, what do we do if there's a
1540 E.g., what if an outer typedef marks the type as class_1 and an inner
1541 typedef marks the type as class_2?
1542 This is the wrong place to do such error checking. We leave it to
1543 the code that created the typedef in the first place to flag the
1544 error. We just pick the outer address space (akin to letting the
1545 outer cast in a chain of casting win), instead of assuming
1546 "it can't happen". */
1548 const int ALL_SPACES = (TYPE_INSTANCE_FLAG_CODE_SPACE
1549 | TYPE_INSTANCE_FLAG_DATA_SPACE);
1550 const int ALL_CLASSES = TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL;
1551 int new_instance_flags = TYPE_INSTANCE_FLAGS (type);
1553 /* Treat code vs data spaces and address classes separately. */
1554 if ((instance_flags & ALL_SPACES) != 0)
1555 new_instance_flags &= ~ALL_SPACES;
1556 if ((instance_flags & ALL_CLASSES) != 0)
1557 new_instance_flags &= ~ALL_CLASSES;
1559 instance_flags |= new_instance_flags;
1563 /* If this is a struct/class/union with no fields, then check
1564 whether a full definition exists somewhere else. This is for
1565 systems where a type definition with no fields is issued for such
1566 types, instead of identifying them as stub types in the first
1569 if (TYPE_IS_OPAQUE (type)
1570 && opaque_type_resolution
1571 && !currently_reading_symtab)
1573 const char *name = type_name_no_tag (type);
1574 struct type *newtype;
1578 stub_noname_complaint ();
1579 return make_qualified_type (type, instance_flags, NULL);
1581 newtype = lookup_transparent_type (name);
1585 /* If the resolved type and the stub are in the same
1586 objfile, then replace the stub type with the real deal.
1587 But if they're in separate objfiles, leave the stub
1588 alone; we'll just look up the transparent type every time
1589 we call check_typedef. We can't create pointers between
1590 types allocated to different objfiles, since they may
1591 have different lifetimes. Trying to copy NEWTYPE over to
1592 TYPE's objfile is pointless, too, since you'll have to
1593 move over any other types NEWTYPE refers to, which could
1594 be an unbounded amount of stuff. */
1595 if (TYPE_OBJFILE (newtype) == TYPE_OBJFILE (type))
1596 type = make_qualified_type (newtype,
1597 TYPE_INSTANCE_FLAGS (type),
1603 /* Otherwise, rely on the stub flag being set for opaque/stubbed
1605 else if (TYPE_STUB (type) && !currently_reading_symtab)
1607 const char *name = type_name_no_tag (type);
1608 /* FIXME: shouldn't we separately check the TYPE_NAME and the
1609 TYPE_TAG_NAME, and look in STRUCT_DOMAIN and/or VAR_DOMAIN
1610 as appropriate? (this code was written before TYPE_NAME and
1611 TYPE_TAG_NAME were separate). */
1616 stub_noname_complaint ();
1617 return make_qualified_type (type, instance_flags, NULL);
1619 sym = lookup_symbol (name, 0, STRUCT_DOMAIN, 0);
1622 /* Same as above for opaque types, we can replace the stub
1623 with the complete type only if they are in the same
1625 if (TYPE_OBJFILE (SYMBOL_TYPE(sym)) == TYPE_OBJFILE (type))
1626 type = make_qualified_type (SYMBOL_TYPE (sym),
1627 TYPE_INSTANCE_FLAGS (type),
1630 type = SYMBOL_TYPE (sym);
1634 if (TYPE_TARGET_STUB (type))
1636 struct type *range_type;
1637 struct type *target_type = check_typedef (TYPE_TARGET_TYPE (type));
1639 if (TYPE_STUB (target_type) || TYPE_TARGET_STUB (target_type))
1641 /* Nothing we can do. */
1643 else if (TYPE_CODE (type) == TYPE_CODE_ARRAY
1644 && TYPE_NFIELDS (type) == 1
1645 && (TYPE_CODE (range_type = TYPE_INDEX_TYPE (type))
1646 == TYPE_CODE_RANGE))
1648 /* Now recompute the length of the array type, based on its
1649 number of elements and the target type's length.
1650 Watch out for Ada null Ada arrays where the high bound
1651 is smaller than the low bound. */
1652 const LONGEST low_bound = TYPE_LOW_BOUND (range_type);
1653 const LONGEST high_bound = TYPE_HIGH_BOUND (range_type);
1656 if (high_bound < low_bound)
1660 /* For now, we conservatively take the array length to be 0
1661 if its length exceeds UINT_MAX. The code below assumes
1662 that for x < 0, (ULONGEST) x == -x + ULONGEST_MAX + 1,
1663 which is technically not guaranteed by C, but is usually true
1664 (because it would be true if x were unsigned with its
1665 high-order bit on). It uses the fact that
1666 high_bound-low_bound is always representable in
1667 ULONGEST and that if high_bound-low_bound+1 overflows,
1668 it overflows to 0. We must change these tests if we
1669 decide to increase the representation of TYPE_LENGTH
1670 from unsigned int to ULONGEST. */
1671 ULONGEST ulow = low_bound, uhigh = high_bound;
1672 ULONGEST tlen = TYPE_LENGTH (target_type);
1674 len = tlen * (uhigh - ulow + 1);
1675 if (tlen == 0 || (len / tlen - 1 + ulow) != uhigh
1679 TYPE_LENGTH (type) = len;
1680 TYPE_TARGET_STUB (type) = 0;
1682 else if (TYPE_CODE (type) == TYPE_CODE_RANGE)
1684 TYPE_LENGTH (type) = TYPE_LENGTH (target_type);
1685 TYPE_TARGET_STUB (type) = 0;
1689 type = make_qualified_type (type, instance_flags, NULL);
1691 /* Cache TYPE_LENGTH for future use. */
1692 TYPE_LENGTH (orig_type) = TYPE_LENGTH (type);
1697 /* Parse a type expression in the string [P..P+LENGTH). If an error
1698 occurs, silently return a void type. */
1700 static struct type *
1701 safe_parse_type (struct gdbarch *gdbarch, char *p, int length)
1703 struct ui_file *saved_gdb_stderr;
1704 struct type *type = NULL; /* Initialize to keep gcc happy. */
1705 volatile struct gdb_exception except;
1707 /* Suppress error messages. */
1708 saved_gdb_stderr = gdb_stderr;
1709 gdb_stderr = ui_file_new ();
1711 /* Call parse_and_eval_type() without fear of longjmp()s. */
1712 TRY_CATCH (except, RETURN_MASK_ERROR)
1714 type = parse_and_eval_type (p, length);
1717 if (except.reason < 0)
1718 type = builtin_type (gdbarch)->builtin_void;
1720 /* Stop suppressing error messages. */
1721 ui_file_delete (gdb_stderr);
1722 gdb_stderr = saved_gdb_stderr;
1727 /* Ugly hack to convert method stubs into method types.
1729 He ain't kiddin'. This demangles the name of the method into a
1730 string including argument types, parses out each argument type,
1731 generates a string casting a zero to that type, evaluates the
1732 string, and stuffs the resulting type into an argtype vector!!!
1733 Then it knows the type of the whole function (including argument
1734 types for overloading), which info used to be in the stab's but was
1735 removed to hack back the space required for them. */
1738 check_stub_method (struct type *type, int method_id, int signature_id)
1740 struct gdbarch *gdbarch = get_type_arch (type);
1742 char *mangled_name = gdb_mangle_name (type, method_id, signature_id);
1743 char *demangled_name = cplus_demangle (mangled_name,
1744 DMGL_PARAMS | DMGL_ANSI);
1745 char *argtypetext, *p;
1746 int depth = 0, argcount = 1;
1747 struct field *argtypes;
1750 /* Make sure we got back a function string that we can use. */
1752 p = strchr (demangled_name, '(');
1756 if (demangled_name == NULL || p == NULL)
1757 error (_("Internal: Cannot demangle mangled name `%s'."),
1760 /* Now, read in the parameters that define this type. */
1765 if (*p == '(' || *p == '<')
1769 else if (*p == ')' || *p == '>')
1773 else if (*p == ',' && depth == 0)
1781 /* If we read one argument and it was ``void'', don't count it. */
1782 if (strncmp (argtypetext, "(void)", 6) == 0)
1785 /* We need one extra slot, for the THIS pointer. */
1787 argtypes = (struct field *)
1788 TYPE_ALLOC (type, (argcount + 1) * sizeof (struct field));
1791 /* Add THIS pointer for non-static methods. */
1792 f = TYPE_FN_FIELDLIST1 (type, method_id);
1793 if (TYPE_FN_FIELD_STATIC_P (f, signature_id))
1797 argtypes[0].type = lookup_pointer_type (type);
1801 if (*p != ')') /* () means no args, skip while. */
1806 if (depth <= 0 && (*p == ',' || *p == ')'))
1808 /* Avoid parsing of ellipsis, they will be handled below.
1809 Also avoid ``void'' as above. */
1810 if (strncmp (argtypetext, "...", p - argtypetext) != 0
1811 && strncmp (argtypetext, "void", p - argtypetext) != 0)
1813 argtypes[argcount].type =
1814 safe_parse_type (gdbarch, argtypetext, p - argtypetext);
1817 argtypetext = p + 1;
1820 if (*p == '(' || *p == '<')
1824 else if (*p == ')' || *p == '>')
1833 TYPE_FN_FIELD_PHYSNAME (f, signature_id) = mangled_name;
1835 /* Now update the old "stub" type into a real type. */
1836 mtype = TYPE_FN_FIELD_TYPE (f, signature_id);
1837 TYPE_DOMAIN_TYPE (mtype) = type;
1838 TYPE_FIELDS (mtype) = argtypes;
1839 TYPE_NFIELDS (mtype) = argcount;
1840 TYPE_STUB (mtype) = 0;
1841 TYPE_FN_FIELD_STUB (f, signature_id) = 0;
1843 TYPE_VARARGS (mtype) = 1;
1845 xfree (demangled_name);
1848 /* This is the external interface to check_stub_method, above. This
1849 function unstubs all of the signatures for TYPE's METHOD_ID method
1850 name. After calling this function TYPE_FN_FIELD_STUB will be
1851 cleared for each signature and TYPE_FN_FIELDLIST_NAME will be
1854 This function unfortunately can not die until stabs do. */
1857 check_stub_method_group (struct type *type, int method_id)
1859 int len = TYPE_FN_FIELDLIST_LENGTH (type, method_id);
1860 struct fn_field *f = TYPE_FN_FIELDLIST1 (type, method_id);
1861 int j, found_stub = 0;
1863 for (j = 0; j < len; j++)
1864 if (TYPE_FN_FIELD_STUB (f, j))
1867 check_stub_method (type, method_id, j);
1870 /* GNU v3 methods with incorrect names were corrected when we read
1871 in type information, because it was cheaper to do it then. The
1872 only GNU v2 methods with incorrect method names are operators and
1873 destructors; destructors were also corrected when we read in type
1876 Therefore the only thing we need to handle here are v2 operator
1878 if (found_stub && strncmp (TYPE_FN_FIELD_PHYSNAME (f, 0), "_Z", 2) != 0)
1881 char dem_opname[256];
1883 ret = cplus_demangle_opname (TYPE_FN_FIELDLIST_NAME (type,
1885 dem_opname, DMGL_ANSI);
1887 ret = cplus_demangle_opname (TYPE_FN_FIELDLIST_NAME (type,
1891 TYPE_FN_FIELDLIST_NAME (type, method_id) = xstrdup (dem_opname);
1895 /* Ensure it is in .rodata (if available) by workarounding GCC PR 44690. */
1896 const struct cplus_struct_type cplus_struct_default = { };
1899 allocate_cplus_struct_type (struct type *type)
1901 if (HAVE_CPLUS_STRUCT (type))
1902 /* Structure was already allocated. Nothing more to do. */
1905 TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_CPLUS_STUFF;
1906 TYPE_RAW_CPLUS_SPECIFIC (type) = (struct cplus_struct_type *)
1907 TYPE_ALLOC (type, sizeof (struct cplus_struct_type));
1908 *(TYPE_RAW_CPLUS_SPECIFIC (type)) = cplus_struct_default;
1911 const struct gnat_aux_type gnat_aux_default =
1914 /* Set the TYPE's type-specific kind to TYPE_SPECIFIC_GNAT_STUFF,
1915 and allocate the associated gnat-specific data. The gnat-specific
1916 data is also initialized to gnat_aux_default. */
1918 allocate_gnat_aux_type (struct type *type)
1920 TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_GNAT_STUFF;
1921 TYPE_GNAT_SPECIFIC (type) = (struct gnat_aux_type *)
1922 TYPE_ALLOC (type, sizeof (struct gnat_aux_type));
1923 *(TYPE_GNAT_SPECIFIC (type)) = gnat_aux_default;
1927 /* Helper function to initialize the standard scalar types.
1929 If NAME is non-NULL, then we make a copy of the string pointed
1930 to by name in the objfile_obstack for that objfile, and initialize
1931 the type name to that copy. There are places (mipsread.c in particular),
1932 where init_type is called with a NULL value for NAME). */
1935 init_type (enum type_code code, int length, int flags,
1936 char *name, struct objfile *objfile)
1940 type = alloc_type (objfile);
1941 TYPE_CODE (type) = code;
1942 TYPE_LENGTH (type) = length;
1944 gdb_assert (!(flags & (TYPE_FLAG_MIN - 1)));
1945 if (flags & TYPE_FLAG_UNSIGNED)
1946 TYPE_UNSIGNED (type) = 1;
1947 if (flags & TYPE_FLAG_NOSIGN)
1948 TYPE_NOSIGN (type) = 1;
1949 if (flags & TYPE_FLAG_STUB)
1950 TYPE_STUB (type) = 1;
1951 if (flags & TYPE_FLAG_TARGET_STUB)
1952 TYPE_TARGET_STUB (type) = 1;
1953 if (flags & TYPE_FLAG_STATIC)
1954 TYPE_STATIC (type) = 1;
1955 if (flags & TYPE_FLAG_PROTOTYPED)
1956 TYPE_PROTOTYPED (type) = 1;
1957 if (flags & TYPE_FLAG_INCOMPLETE)
1958 TYPE_INCOMPLETE (type) = 1;
1959 if (flags & TYPE_FLAG_VARARGS)
1960 TYPE_VARARGS (type) = 1;
1961 if (flags & TYPE_FLAG_VECTOR)
1962 TYPE_VECTOR (type) = 1;
1963 if (flags & TYPE_FLAG_STUB_SUPPORTED)
1964 TYPE_STUB_SUPPORTED (type) = 1;
1965 if (flags & TYPE_FLAG_FIXED_INSTANCE)
1966 TYPE_FIXED_INSTANCE (type) = 1;
1967 if (flags & TYPE_FLAG_GNU_IFUNC)
1968 TYPE_GNU_IFUNC (type) = 1;
1971 TYPE_NAME (type) = obsavestring (name, strlen (name),
1972 &objfile->objfile_obstack);
1976 if (name && strcmp (name, "char") == 0)
1977 TYPE_NOSIGN (type) = 1;
1981 case TYPE_CODE_STRUCT:
1982 case TYPE_CODE_UNION:
1983 case TYPE_CODE_NAMESPACE:
1984 INIT_CPLUS_SPECIFIC (type);
1987 TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_FLOATFORMAT;
1989 case TYPE_CODE_FUNC:
1990 INIT_FUNC_SPECIFIC (type);
1997 can_dereference (struct type *t)
1999 /* FIXME: Should we return true for references as well as
2004 && TYPE_CODE (t) == TYPE_CODE_PTR
2005 && TYPE_CODE (TYPE_TARGET_TYPE (t)) != TYPE_CODE_VOID);
2009 is_integral_type (struct type *t)
2014 && ((TYPE_CODE (t) == TYPE_CODE_INT)
2015 || (TYPE_CODE (t) == TYPE_CODE_ENUM)
2016 || (TYPE_CODE (t) == TYPE_CODE_FLAGS)
2017 || (TYPE_CODE (t) == TYPE_CODE_CHAR)
2018 || (TYPE_CODE (t) == TYPE_CODE_RANGE)
2019 || (TYPE_CODE (t) == TYPE_CODE_BOOL)));
2022 /* Return true if TYPE is scalar. */
2025 is_scalar_type (struct type *type)
2027 CHECK_TYPEDEF (type);
2029 switch (TYPE_CODE (type))
2031 case TYPE_CODE_ARRAY:
2032 case TYPE_CODE_STRUCT:
2033 case TYPE_CODE_UNION:
2035 case TYPE_CODE_STRING:
2036 case TYPE_CODE_BITSTRING:
2043 /* Return true if T is scalar, or a composite type which in practice has
2044 the memory layout of a scalar type. E.g., an array or struct with only
2045 one scalar element inside it, or a union with only scalar elements. */
2048 is_scalar_type_recursive (struct type *t)
2052 if (is_scalar_type (t))
2054 /* Are we dealing with an array or string of known dimensions? */
2055 else if ((TYPE_CODE (t) == TYPE_CODE_ARRAY
2056 || TYPE_CODE (t) == TYPE_CODE_STRING) && TYPE_NFIELDS (t) == 1
2057 && TYPE_CODE (TYPE_INDEX_TYPE (t)) == TYPE_CODE_RANGE)
2059 LONGEST low_bound, high_bound;
2060 struct type *elt_type = check_typedef (TYPE_TARGET_TYPE (t));
2062 get_discrete_bounds (TYPE_INDEX_TYPE (t), &low_bound, &high_bound);
2064 return high_bound == low_bound && is_scalar_type_recursive (elt_type);
2066 /* Are we dealing with a struct with one element? */
2067 else if (TYPE_CODE (t) == TYPE_CODE_STRUCT && TYPE_NFIELDS (t) == 1)
2068 return is_scalar_type_recursive (TYPE_FIELD_TYPE (t, 0));
2069 else if (TYPE_CODE (t) == TYPE_CODE_UNION)
2071 int i, n = TYPE_NFIELDS (t);
2073 /* If all elements of the union are scalar, then the union is scalar. */
2074 for (i = 0; i < n; i++)
2075 if (!is_scalar_type_recursive (TYPE_FIELD_TYPE (t, i)))
2084 /* A helper function which returns true if types A and B represent the
2085 "same" class type. This is true if the types have the same main
2086 type, or the same name. */
2089 class_types_same_p (const struct type *a, const struct type *b)
2091 return (TYPE_MAIN_TYPE (a) == TYPE_MAIN_TYPE (b)
2092 || (TYPE_NAME (a) && TYPE_NAME (b)
2093 && !strcmp (TYPE_NAME (a), TYPE_NAME (b))));
2096 /* If BASE is an ancestor of DCLASS return the distance between them.
2097 otherwise return -1;
2101 class B: public A {};
2102 class C: public B {};
2105 distance_to_ancestor (A, A, 0) = 0
2106 distance_to_ancestor (A, B, 0) = 1
2107 distance_to_ancestor (A, C, 0) = 2
2108 distance_to_ancestor (A, D, 0) = 3
2110 If PUBLIC is 1 then only public ancestors are considered,
2111 and the function returns the distance only if BASE is a public ancestor
2115 distance_to_ancestor (A, D, 1) = -1. */
2118 distance_to_ancestor (struct type *base, struct type *dclass, int public)
2123 CHECK_TYPEDEF (base);
2124 CHECK_TYPEDEF (dclass);
2126 if (class_types_same_p (base, dclass))
2129 for (i = 0; i < TYPE_N_BASECLASSES (dclass); i++)
2131 if (public && ! BASETYPE_VIA_PUBLIC (dclass, i))
2134 d = distance_to_ancestor (base, TYPE_BASECLASS (dclass, i), public);
2142 /* Check whether BASE is an ancestor or base class or DCLASS
2143 Return 1 if so, and 0 if not.
2144 Note: If BASE and DCLASS are of the same type, this function
2145 will return 1. So for some class A, is_ancestor (A, A) will
2149 is_ancestor (struct type *base, struct type *dclass)
2151 return distance_to_ancestor (base, dclass, 0) >= 0;
2154 /* Like is_ancestor, but only returns true when BASE is a public
2155 ancestor of DCLASS. */
2158 is_public_ancestor (struct type *base, struct type *dclass)
2160 return distance_to_ancestor (base, dclass, 1) >= 0;
2163 /* A helper function for is_unique_ancestor. */
2166 is_unique_ancestor_worker (struct type *base, struct type *dclass,
2168 const gdb_byte *valaddr, int embedded_offset,
2169 CORE_ADDR address, struct value *val)
2173 CHECK_TYPEDEF (base);
2174 CHECK_TYPEDEF (dclass);
2176 for (i = 0; i < TYPE_N_BASECLASSES (dclass) && count < 2; ++i)
2181 iter = check_typedef (TYPE_BASECLASS (dclass, i));
2183 this_offset = baseclass_offset (dclass, i, valaddr, embedded_offset,
2186 if (class_types_same_p (base, iter))
2188 /* If this is the first subclass, set *OFFSET and set count
2189 to 1. Otherwise, if this is at the same offset as
2190 previous instances, do nothing. Otherwise, increment
2194 *offset = this_offset;
2197 else if (this_offset == *offset)
2205 count += is_unique_ancestor_worker (base, iter, offset,
2207 embedded_offset + this_offset,
2214 /* Like is_ancestor, but only returns true if BASE is a unique base
2215 class of the type of VAL. */
2218 is_unique_ancestor (struct type *base, struct value *val)
2222 return is_unique_ancestor_worker (base, value_type (val), &offset,
2223 value_contents_for_printing (val),
2224 value_embedded_offset (val),
2225 value_address (val), val) == 1;
2230 /* Return the sum of the rank of A with the rank of B. */
2233 sum_ranks (struct rank a, struct rank b)
2236 c.rank = a.rank + b.rank;
2237 c.subrank = a.subrank + b.subrank;
2241 /* Compare rank A and B and return:
2243 1 if a is better than b
2244 -1 if b is better than a. */
2247 compare_ranks (struct rank a, struct rank b)
2249 if (a.rank == b.rank)
2251 if (a.subrank == b.subrank)
2253 if (a.subrank < b.subrank)
2255 if (a.subrank > b.subrank)
2259 if (a.rank < b.rank)
2262 /* a.rank > b.rank */
2266 /* Functions for overload resolution begin here. */
2268 /* Compare two badness vectors A and B and return the result.
2269 0 => A and B are identical
2270 1 => A and B are incomparable
2271 2 => A is better than B
2272 3 => A is worse than B */
2275 compare_badness (struct badness_vector *a, struct badness_vector *b)
2279 short found_pos = 0; /* any positives in c? */
2280 short found_neg = 0; /* any negatives in c? */
2282 /* differing lengths => incomparable */
2283 if (a->length != b->length)
2286 /* Subtract b from a */
2287 for (i = 0; i < a->length; i++)
2289 tmp = compare_ranks (b->rank[i], a->rank[i]);
2299 return 1; /* incomparable */
2301 return 3; /* A > B */
2307 return 2; /* A < B */
2309 return 0; /* A == B */
2313 /* Rank a function by comparing its parameter types (PARMS, length
2314 NPARMS), to the types of an argument list (ARGS, length NARGS).
2315 Return a pointer to a badness vector. This has NARGS + 1
2318 struct badness_vector *
2319 rank_function (struct type **parms, int nparms,
2320 struct value **args, int nargs)
2323 struct badness_vector *bv;
2324 int min_len = nparms < nargs ? nparms : nargs;
2326 bv = xmalloc (sizeof (struct badness_vector));
2327 bv->length = nargs + 1; /* add 1 for the length-match rank. */
2328 bv->rank = xmalloc ((nargs + 1) * sizeof (int));
2330 /* First compare the lengths of the supplied lists.
2331 If there is a mismatch, set it to a high value. */
2333 /* pai/1997-06-03 FIXME: when we have debug info about default
2334 arguments and ellipsis parameter lists, we should consider those
2335 and rank the length-match more finely. */
2337 LENGTH_MATCH (bv) = (nargs != nparms)
2338 ? LENGTH_MISMATCH_BADNESS
2339 : EXACT_MATCH_BADNESS;
2341 /* Now rank all the parameters of the candidate function. */
2342 for (i = 1; i <= min_len; i++)
2343 bv->rank[i] = rank_one_type (parms[i - 1], value_type (args[i - 1]),
2346 /* If more arguments than parameters, add dummy entries. */
2347 for (i = min_len + 1; i <= nargs; i++)
2348 bv->rank[i] = TOO_FEW_PARAMS_BADNESS;
2353 /* Compare the names of two integer types, assuming that any sign
2354 qualifiers have been checked already. We do it this way because
2355 there may be an "int" in the name of one of the types. */
2358 integer_types_same_name_p (const char *first, const char *second)
2360 int first_p, second_p;
2362 /* If both are shorts, return 1; if neither is a short, keep
2364 first_p = (strstr (first, "short") != NULL);
2365 second_p = (strstr (second, "short") != NULL);
2366 if (first_p && second_p)
2368 if (first_p || second_p)
2371 /* Likewise for long. */
2372 first_p = (strstr (first, "long") != NULL);
2373 second_p = (strstr (second, "long") != NULL);
2374 if (first_p && second_p)
2376 if (first_p || second_p)
2379 /* Likewise for char. */
2380 first_p = (strstr (first, "char") != NULL);
2381 second_p = (strstr (second, "char") != NULL);
2382 if (first_p && second_p)
2384 if (first_p || second_p)
2387 /* They must both be ints. */
2391 /* Compares type A to type B returns 1 if the represent the same type
2395 types_equal (struct type *a, struct type *b)
2397 /* Identical type pointers. */
2398 /* However, this still doesn't catch all cases of same type for b
2399 and a. The reason is that builtin types are different from
2400 the same ones constructed from the object. */
2404 /* Resolve typedefs */
2405 if (TYPE_CODE (a) == TYPE_CODE_TYPEDEF)
2406 a = check_typedef (a);
2407 if (TYPE_CODE (b) == TYPE_CODE_TYPEDEF)
2408 b = check_typedef (b);
2410 /* If after resolving typedefs a and b are not of the same type
2411 code then they are not equal. */
2412 if (TYPE_CODE (a) != TYPE_CODE (b))
2415 /* If a and b are both pointers types or both reference types then
2416 they are equal of the same type iff the objects they refer to are
2417 of the same type. */
2418 if (TYPE_CODE (a) == TYPE_CODE_PTR
2419 || TYPE_CODE (a) == TYPE_CODE_REF)
2420 return types_equal (TYPE_TARGET_TYPE (a),
2421 TYPE_TARGET_TYPE (b));
2423 /* Well, damnit, if the names are exactly the same, I'll say they
2424 are exactly the same. This happens when we generate method
2425 stubs. The types won't point to the same address, but they
2426 really are the same. */
2428 if (TYPE_NAME (a) && TYPE_NAME (b)
2429 && strcmp (TYPE_NAME (a), TYPE_NAME (b)) == 0)
2432 /* Check if identical after resolving typedefs. */
2439 /* Compare one type (PARM) for compatibility with another (ARG).
2440 * PARM is intended to be the parameter type of a function; and
2441 * ARG is the supplied argument's type. This function tests if
2442 * the latter can be converted to the former.
2443 * VALUE is the argument's value or NULL if none (or called recursively)
2445 * Return 0 if they are identical types;
2446 * Otherwise, return an integer which corresponds to how compatible
2447 * PARM is to ARG. The higher the return value, the worse the match.
2448 * Generally the "bad" conversions are all uniformly assigned a 100. */
2451 rank_one_type (struct type *parm, struct type *arg, struct value *value)
2453 struct rank rank = {0,0};
2455 if (types_equal (parm, arg))
2456 return EXACT_MATCH_BADNESS;
2458 /* Resolve typedefs */
2459 if (TYPE_CODE (parm) == TYPE_CODE_TYPEDEF)
2460 parm = check_typedef (parm);
2461 if (TYPE_CODE (arg) == TYPE_CODE_TYPEDEF)
2462 arg = check_typedef (arg);
2464 /* See through references, since we can almost make non-references
2466 if (TYPE_CODE (arg) == TYPE_CODE_REF)
2467 return (sum_ranks (rank_one_type (parm, TYPE_TARGET_TYPE (arg), NULL),
2468 REFERENCE_CONVERSION_BADNESS));
2469 if (TYPE_CODE (parm) == TYPE_CODE_REF)
2470 return (sum_ranks (rank_one_type (TYPE_TARGET_TYPE (parm), arg, NULL),
2471 REFERENCE_CONVERSION_BADNESS));
2473 /* Debugging only. */
2474 fprintf_filtered (gdb_stderr,
2475 "------ Arg is %s [%d], parm is %s [%d]\n",
2476 TYPE_NAME (arg), TYPE_CODE (arg),
2477 TYPE_NAME (parm), TYPE_CODE (parm));
2479 /* x -> y means arg of type x being supplied for parameter of type y. */
2481 switch (TYPE_CODE (parm))
2484 switch (TYPE_CODE (arg))
2488 /* Allowed pointer conversions are:
2489 (a) pointer to void-pointer conversion. */
2490 if (TYPE_CODE (TYPE_TARGET_TYPE (parm)) == TYPE_CODE_VOID)
2491 return VOID_PTR_CONVERSION_BADNESS;
2493 /* (b) pointer to ancestor-pointer conversion. */
2494 rank.subrank = distance_to_ancestor (TYPE_TARGET_TYPE (parm),
2495 TYPE_TARGET_TYPE (arg),
2497 if (rank.subrank >= 0)
2498 return sum_ranks (BASE_PTR_CONVERSION_BADNESS, rank);
2500 return INCOMPATIBLE_TYPE_BADNESS;
2501 case TYPE_CODE_ARRAY:
2502 if (types_equal (TYPE_TARGET_TYPE (parm),
2503 TYPE_TARGET_TYPE (arg)))
2504 return EXACT_MATCH_BADNESS;
2505 return INCOMPATIBLE_TYPE_BADNESS;
2506 case TYPE_CODE_FUNC:
2507 return rank_one_type (TYPE_TARGET_TYPE (parm), arg, NULL);
2509 if (value != NULL && TYPE_CODE (value_type (value)) == TYPE_CODE_INT
2510 && value_as_long (value) == 0)
2512 /* Null pointer conversion: allow it to be cast to a pointer.
2513 [4.10.1 of C++ standard draft n3290] */
2514 return NULL_POINTER_CONVERSION_BADNESS;
2517 case TYPE_CODE_ENUM:
2518 case TYPE_CODE_FLAGS:
2519 case TYPE_CODE_CHAR:
2520 case TYPE_CODE_RANGE:
2521 case TYPE_CODE_BOOL:
2523 return INCOMPATIBLE_TYPE_BADNESS;
2525 case TYPE_CODE_ARRAY:
2526 switch (TYPE_CODE (arg))
2529 case TYPE_CODE_ARRAY:
2530 return rank_one_type (TYPE_TARGET_TYPE (parm),
2531 TYPE_TARGET_TYPE (arg), NULL);
2533 return INCOMPATIBLE_TYPE_BADNESS;
2535 case TYPE_CODE_FUNC:
2536 switch (TYPE_CODE (arg))
2538 case TYPE_CODE_PTR: /* funcptr -> func */
2539 return rank_one_type (parm, TYPE_TARGET_TYPE (arg), NULL);
2541 return INCOMPATIBLE_TYPE_BADNESS;
2544 switch (TYPE_CODE (arg))
2547 if (TYPE_LENGTH (arg) == TYPE_LENGTH (parm))
2549 /* Deal with signed, unsigned, and plain chars and
2550 signed and unsigned ints. */
2551 if (TYPE_NOSIGN (parm))
2553 /* This case only for character types. */
2554 if (TYPE_NOSIGN (arg))
2555 return EXACT_MATCH_BADNESS; /* plain char -> plain char */
2556 else /* signed/unsigned char -> plain char */
2557 return INTEGER_CONVERSION_BADNESS;
2559 else if (TYPE_UNSIGNED (parm))
2561 if (TYPE_UNSIGNED (arg))
2563 /* unsigned int -> unsigned int, or
2564 unsigned long -> unsigned long */
2565 if (integer_types_same_name_p (TYPE_NAME (parm),
2567 return EXACT_MATCH_BADNESS;
2568 else if (integer_types_same_name_p (TYPE_NAME (arg),
2570 && integer_types_same_name_p (TYPE_NAME (parm),
2572 /* unsigned int -> unsigned long */
2573 return INTEGER_PROMOTION_BADNESS;
2575 /* unsigned long -> unsigned int */
2576 return INTEGER_CONVERSION_BADNESS;
2580 if (integer_types_same_name_p (TYPE_NAME (arg),
2582 && integer_types_same_name_p (TYPE_NAME (parm),
2584 /* signed long -> unsigned int */
2585 return INTEGER_CONVERSION_BADNESS;
2587 /* signed int/long -> unsigned int/long */
2588 return INTEGER_CONVERSION_BADNESS;
2591 else if (!TYPE_NOSIGN (arg) && !TYPE_UNSIGNED (arg))
2593 if (integer_types_same_name_p (TYPE_NAME (parm),
2595 return EXACT_MATCH_BADNESS;
2596 else if (integer_types_same_name_p (TYPE_NAME (arg),
2598 && integer_types_same_name_p (TYPE_NAME (parm),
2600 return INTEGER_PROMOTION_BADNESS;
2602 return INTEGER_CONVERSION_BADNESS;
2605 return INTEGER_CONVERSION_BADNESS;
2607 else if (TYPE_LENGTH (arg) < TYPE_LENGTH (parm))
2608 return INTEGER_PROMOTION_BADNESS;
2610 return INTEGER_CONVERSION_BADNESS;
2611 case TYPE_CODE_ENUM:
2612 case TYPE_CODE_FLAGS:
2613 case TYPE_CODE_CHAR:
2614 case TYPE_CODE_RANGE:
2615 case TYPE_CODE_BOOL:
2616 return INTEGER_PROMOTION_BADNESS;
2618 return INT_FLOAT_CONVERSION_BADNESS;
2620 return NS_POINTER_CONVERSION_BADNESS;
2622 return INCOMPATIBLE_TYPE_BADNESS;
2625 case TYPE_CODE_ENUM:
2626 switch (TYPE_CODE (arg))
2629 case TYPE_CODE_CHAR:
2630 case TYPE_CODE_RANGE:
2631 case TYPE_CODE_BOOL:
2632 case TYPE_CODE_ENUM:
2633 return INTEGER_CONVERSION_BADNESS;
2635 return INT_FLOAT_CONVERSION_BADNESS;
2637 return INCOMPATIBLE_TYPE_BADNESS;
2640 case TYPE_CODE_CHAR:
2641 switch (TYPE_CODE (arg))
2643 case TYPE_CODE_RANGE:
2644 case TYPE_CODE_BOOL:
2645 case TYPE_CODE_ENUM:
2646 return INTEGER_CONVERSION_BADNESS;
2648 return INT_FLOAT_CONVERSION_BADNESS;
2650 if (TYPE_LENGTH (arg) > TYPE_LENGTH (parm))
2651 return INTEGER_CONVERSION_BADNESS;
2652 else if (TYPE_LENGTH (arg) < TYPE_LENGTH (parm))
2653 return INTEGER_PROMOTION_BADNESS;
2654 /* >>> !! else fall through !! <<< */
2655 case TYPE_CODE_CHAR:
2656 /* Deal with signed, unsigned, and plain chars for C++ and
2657 with int cases falling through from previous case. */
2658 if (TYPE_NOSIGN (parm))
2660 if (TYPE_NOSIGN (arg))
2661 return EXACT_MATCH_BADNESS;
2663 return INTEGER_CONVERSION_BADNESS;
2665 else if (TYPE_UNSIGNED (parm))
2667 if (TYPE_UNSIGNED (arg))
2668 return EXACT_MATCH_BADNESS;
2670 return INTEGER_PROMOTION_BADNESS;
2672 else if (!TYPE_NOSIGN (arg) && !TYPE_UNSIGNED (arg))
2673 return EXACT_MATCH_BADNESS;
2675 return INTEGER_CONVERSION_BADNESS;
2677 return INCOMPATIBLE_TYPE_BADNESS;
2680 case TYPE_CODE_RANGE:
2681 switch (TYPE_CODE (arg))
2684 case TYPE_CODE_CHAR:
2685 case TYPE_CODE_RANGE:
2686 case TYPE_CODE_BOOL:
2687 case TYPE_CODE_ENUM:
2688 return INTEGER_CONVERSION_BADNESS;
2690 return INT_FLOAT_CONVERSION_BADNESS;
2692 return INCOMPATIBLE_TYPE_BADNESS;
2695 case TYPE_CODE_BOOL:
2696 switch (TYPE_CODE (arg))
2699 case TYPE_CODE_CHAR:
2700 case TYPE_CODE_RANGE:
2701 case TYPE_CODE_ENUM:
2703 return INCOMPATIBLE_TYPE_BADNESS;
2705 return BOOL_PTR_CONVERSION_BADNESS;
2706 case TYPE_CODE_BOOL:
2707 return EXACT_MATCH_BADNESS;
2709 return INCOMPATIBLE_TYPE_BADNESS;
2713 switch (TYPE_CODE (arg))
2716 if (TYPE_LENGTH (arg) < TYPE_LENGTH (parm))
2717 return FLOAT_PROMOTION_BADNESS;
2718 else if (TYPE_LENGTH (arg) == TYPE_LENGTH (parm))
2719 return EXACT_MATCH_BADNESS;
2721 return FLOAT_CONVERSION_BADNESS;
2723 case TYPE_CODE_BOOL:
2724 case TYPE_CODE_ENUM:
2725 case TYPE_CODE_RANGE:
2726 case TYPE_CODE_CHAR:
2727 return INT_FLOAT_CONVERSION_BADNESS;
2729 return INCOMPATIBLE_TYPE_BADNESS;
2732 case TYPE_CODE_COMPLEX:
2733 switch (TYPE_CODE (arg))
2734 { /* Strictly not needed for C++, but... */
2736 return FLOAT_PROMOTION_BADNESS;
2737 case TYPE_CODE_COMPLEX:
2738 return EXACT_MATCH_BADNESS;
2740 return INCOMPATIBLE_TYPE_BADNESS;
2743 case TYPE_CODE_STRUCT:
2744 /* currently same as TYPE_CODE_CLASS. */
2745 switch (TYPE_CODE (arg))
2747 case TYPE_CODE_STRUCT:
2748 /* Check for derivation */
2749 rank.subrank = distance_to_ancestor (parm, arg, 0);
2750 if (rank.subrank >= 0)
2751 return sum_ranks (BASE_CONVERSION_BADNESS, rank);
2752 /* else fall through */
2754 return INCOMPATIBLE_TYPE_BADNESS;
2757 case TYPE_CODE_UNION:
2758 switch (TYPE_CODE (arg))
2760 case TYPE_CODE_UNION:
2762 return INCOMPATIBLE_TYPE_BADNESS;
2765 case TYPE_CODE_MEMBERPTR:
2766 switch (TYPE_CODE (arg))
2769 return INCOMPATIBLE_TYPE_BADNESS;
2772 case TYPE_CODE_METHOD:
2773 switch (TYPE_CODE (arg))
2777 return INCOMPATIBLE_TYPE_BADNESS;
2781 switch (TYPE_CODE (arg))
2785 return INCOMPATIBLE_TYPE_BADNESS;
2790 switch (TYPE_CODE (arg))
2794 return rank_one_type (TYPE_FIELD_TYPE (parm, 0),
2795 TYPE_FIELD_TYPE (arg, 0), NULL);
2797 return INCOMPATIBLE_TYPE_BADNESS;
2800 case TYPE_CODE_VOID:
2802 return INCOMPATIBLE_TYPE_BADNESS;
2803 } /* switch (TYPE_CODE (arg)) */
2807 /* End of functions for overload resolution. */
2810 print_bit_vector (B_TYPE *bits, int nbits)
2814 for (bitno = 0; bitno < nbits; bitno++)
2816 if ((bitno % 8) == 0)
2818 puts_filtered (" ");
2820 if (B_TST (bits, bitno))
2821 printf_filtered (("1"));
2823 printf_filtered (("0"));
2827 /* Note the first arg should be the "this" pointer, we may not want to
2828 include it since we may get into a infinitely recursive
2832 print_arg_types (struct field *args, int nargs, int spaces)
2838 for (i = 0; i < nargs; i++)
2839 recursive_dump_type (args[i].type, spaces + 2);
2844 field_is_static (struct field *f)
2846 /* "static" fields are the fields whose location is not relative
2847 to the address of the enclosing struct. It would be nice to
2848 have a dedicated flag that would be set for static fields when
2849 the type is being created. But in practice, checking the field
2850 loc_kind should give us an accurate answer. */
2851 return (FIELD_LOC_KIND (*f) == FIELD_LOC_KIND_PHYSNAME
2852 || FIELD_LOC_KIND (*f) == FIELD_LOC_KIND_PHYSADDR);
2856 dump_fn_fieldlists (struct type *type, int spaces)
2862 printfi_filtered (spaces, "fn_fieldlists ");
2863 gdb_print_host_address (TYPE_FN_FIELDLISTS (type), gdb_stdout);
2864 printf_filtered ("\n");
2865 for (method_idx = 0; method_idx < TYPE_NFN_FIELDS (type); method_idx++)
2867 f = TYPE_FN_FIELDLIST1 (type, method_idx);
2868 printfi_filtered (spaces + 2, "[%d] name '%s' (",
2870 TYPE_FN_FIELDLIST_NAME (type, method_idx));
2871 gdb_print_host_address (TYPE_FN_FIELDLIST_NAME (type, method_idx),
2873 printf_filtered (_(") length %d\n"),
2874 TYPE_FN_FIELDLIST_LENGTH (type, method_idx));
2875 for (overload_idx = 0;
2876 overload_idx < TYPE_FN_FIELDLIST_LENGTH (type, method_idx);
2879 printfi_filtered (spaces + 4, "[%d] physname '%s' (",
2881 TYPE_FN_FIELD_PHYSNAME (f, overload_idx));
2882 gdb_print_host_address (TYPE_FN_FIELD_PHYSNAME (f, overload_idx),
2884 printf_filtered (")\n");
2885 printfi_filtered (spaces + 8, "type ");
2886 gdb_print_host_address (TYPE_FN_FIELD_TYPE (f, overload_idx),
2888 printf_filtered ("\n");
2890 recursive_dump_type (TYPE_FN_FIELD_TYPE (f, overload_idx),
2893 printfi_filtered (spaces + 8, "args ");
2894 gdb_print_host_address (TYPE_FN_FIELD_ARGS (f, overload_idx),
2896 printf_filtered ("\n");
2898 print_arg_types (TYPE_FN_FIELD_ARGS (f, overload_idx),
2899 TYPE_NFIELDS (TYPE_FN_FIELD_TYPE (f,
2902 printfi_filtered (spaces + 8, "fcontext ");
2903 gdb_print_host_address (TYPE_FN_FIELD_FCONTEXT (f, overload_idx),
2905 printf_filtered ("\n");
2907 printfi_filtered (spaces + 8, "is_const %d\n",
2908 TYPE_FN_FIELD_CONST (f, overload_idx));
2909 printfi_filtered (spaces + 8, "is_volatile %d\n",
2910 TYPE_FN_FIELD_VOLATILE (f, overload_idx));
2911 printfi_filtered (spaces + 8, "is_private %d\n",
2912 TYPE_FN_FIELD_PRIVATE (f, overload_idx));
2913 printfi_filtered (spaces + 8, "is_protected %d\n",
2914 TYPE_FN_FIELD_PROTECTED (f, overload_idx));
2915 printfi_filtered (spaces + 8, "is_stub %d\n",
2916 TYPE_FN_FIELD_STUB (f, overload_idx));
2917 printfi_filtered (spaces + 8, "voffset %u\n",
2918 TYPE_FN_FIELD_VOFFSET (f, overload_idx));
2924 print_cplus_stuff (struct type *type, int spaces)
2926 printfi_filtered (spaces, "n_baseclasses %d\n",
2927 TYPE_N_BASECLASSES (type));
2928 printfi_filtered (spaces, "nfn_fields %d\n",
2929 TYPE_NFN_FIELDS (type));
2930 if (TYPE_N_BASECLASSES (type) > 0)
2932 printfi_filtered (spaces, "virtual_field_bits (%d bits at *",
2933 TYPE_N_BASECLASSES (type));
2934 gdb_print_host_address (TYPE_FIELD_VIRTUAL_BITS (type),
2936 printf_filtered (")");
2938 print_bit_vector (TYPE_FIELD_VIRTUAL_BITS (type),
2939 TYPE_N_BASECLASSES (type));
2940 puts_filtered ("\n");
2942 if (TYPE_NFIELDS (type) > 0)
2944 if (TYPE_FIELD_PRIVATE_BITS (type) != NULL)
2946 printfi_filtered (spaces,
2947 "private_field_bits (%d bits at *",
2948 TYPE_NFIELDS (type));
2949 gdb_print_host_address (TYPE_FIELD_PRIVATE_BITS (type),
2951 printf_filtered (")");
2952 print_bit_vector (TYPE_FIELD_PRIVATE_BITS (type),
2953 TYPE_NFIELDS (type));
2954 puts_filtered ("\n");
2956 if (TYPE_FIELD_PROTECTED_BITS (type) != NULL)
2958 printfi_filtered (spaces,
2959 "protected_field_bits (%d bits at *",
2960 TYPE_NFIELDS (type));
2961 gdb_print_host_address (TYPE_FIELD_PROTECTED_BITS (type),
2963 printf_filtered (")");
2964 print_bit_vector (TYPE_FIELD_PROTECTED_BITS (type),
2965 TYPE_NFIELDS (type));
2966 puts_filtered ("\n");
2969 if (TYPE_NFN_FIELDS (type) > 0)
2971 dump_fn_fieldlists (type, spaces);
2975 /* Print the contents of the TYPE's type_specific union, assuming that
2976 its type-specific kind is TYPE_SPECIFIC_GNAT_STUFF. */
2979 print_gnat_stuff (struct type *type, int spaces)
2981 struct type *descriptive_type = TYPE_DESCRIPTIVE_TYPE (type);
2983 recursive_dump_type (descriptive_type, spaces + 2);
2986 static struct obstack dont_print_type_obstack;
2989 recursive_dump_type (struct type *type, int spaces)
2994 obstack_begin (&dont_print_type_obstack, 0);
2996 if (TYPE_NFIELDS (type) > 0
2997 || (HAVE_CPLUS_STRUCT (type) && TYPE_NFN_FIELDS (type) > 0))
2999 struct type **first_dont_print
3000 = (struct type **) obstack_base (&dont_print_type_obstack);
3002 int i = (struct type **)
3003 obstack_next_free (&dont_print_type_obstack) - first_dont_print;
3007 if (type == first_dont_print[i])
3009 printfi_filtered (spaces, "type node ");
3010 gdb_print_host_address (type, gdb_stdout);
3011 printf_filtered (_(" <same as already seen type>\n"));
3016 obstack_ptr_grow (&dont_print_type_obstack, type);
3019 printfi_filtered (spaces, "type node ");
3020 gdb_print_host_address (type, gdb_stdout);
3021 printf_filtered ("\n");
3022 printfi_filtered (spaces, "name '%s' (",
3023 TYPE_NAME (type) ? TYPE_NAME (type) : "<NULL>");
3024 gdb_print_host_address (TYPE_NAME (type), gdb_stdout);
3025 printf_filtered (")\n");
3026 printfi_filtered (spaces, "tagname '%s' (",
3027 TYPE_TAG_NAME (type) ? TYPE_TAG_NAME (type) : "<NULL>");
3028 gdb_print_host_address (TYPE_TAG_NAME (type), gdb_stdout);
3029 printf_filtered (")\n");
3030 printfi_filtered (spaces, "code 0x%x ", TYPE_CODE (type));
3031 switch (TYPE_CODE (type))
3033 case TYPE_CODE_UNDEF:
3034 printf_filtered ("(TYPE_CODE_UNDEF)");
3037 printf_filtered ("(TYPE_CODE_PTR)");
3039 case TYPE_CODE_ARRAY:
3040 printf_filtered ("(TYPE_CODE_ARRAY)");
3042 case TYPE_CODE_STRUCT:
3043 printf_filtered ("(TYPE_CODE_STRUCT)");
3045 case TYPE_CODE_UNION:
3046 printf_filtered ("(TYPE_CODE_UNION)");
3048 case TYPE_CODE_ENUM:
3049 printf_filtered ("(TYPE_CODE_ENUM)");
3051 case TYPE_CODE_FLAGS:
3052 printf_filtered ("(TYPE_CODE_FLAGS)");
3054 case TYPE_CODE_FUNC:
3055 printf_filtered ("(TYPE_CODE_FUNC)");
3058 printf_filtered ("(TYPE_CODE_INT)");
3061 printf_filtered ("(TYPE_CODE_FLT)");
3063 case TYPE_CODE_VOID:
3064 printf_filtered ("(TYPE_CODE_VOID)");
3067 printf_filtered ("(TYPE_CODE_SET)");
3069 case TYPE_CODE_RANGE:
3070 printf_filtered ("(TYPE_CODE_RANGE)");
3072 case TYPE_CODE_STRING:
3073 printf_filtered ("(TYPE_CODE_STRING)");
3075 case TYPE_CODE_BITSTRING:
3076 printf_filtered ("(TYPE_CODE_BITSTRING)");
3078 case TYPE_CODE_ERROR:
3079 printf_filtered ("(TYPE_CODE_ERROR)");
3081 case TYPE_CODE_MEMBERPTR:
3082 printf_filtered ("(TYPE_CODE_MEMBERPTR)");
3084 case TYPE_CODE_METHODPTR:
3085 printf_filtered ("(TYPE_CODE_METHODPTR)");
3087 case TYPE_CODE_METHOD:
3088 printf_filtered ("(TYPE_CODE_METHOD)");
3091 printf_filtered ("(TYPE_CODE_REF)");
3093 case TYPE_CODE_CHAR:
3094 printf_filtered ("(TYPE_CODE_CHAR)");
3096 case TYPE_CODE_BOOL:
3097 printf_filtered ("(TYPE_CODE_BOOL)");
3099 case TYPE_CODE_COMPLEX:
3100 printf_filtered ("(TYPE_CODE_COMPLEX)");
3102 case TYPE_CODE_TYPEDEF:
3103 printf_filtered ("(TYPE_CODE_TYPEDEF)");
3105 case TYPE_CODE_NAMESPACE:
3106 printf_filtered ("(TYPE_CODE_NAMESPACE)");
3109 printf_filtered ("(UNKNOWN TYPE CODE)");
3112 puts_filtered ("\n");
3113 printfi_filtered (spaces, "length %d\n", TYPE_LENGTH (type));
3114 if (TYPE_OBJFILE_OWNED (type))
3116 printfi_filtered (spaces, "objfile ");
3117 gdb_print_host_address (TYPE_OWNER (type).objfile, gdb_stdout);
3121 printfi_filtered (spaces, "gdbarch ");
3122 gdb_print_host_address (TYPE_OWNER (type).gdbarch, gdb_stdout);
3124 printf_filtered ("\n");
3125 printfi_filtered (spaces, "target_type ");
3126 gdb_print_host_address (TYPE_TARGET_TYPE (type), gdb_stdout);
3127 printf_filtered ("\n");
3128 if (TYPE_TARGET_TYPE (type) != NULL)
3130 recursive_dump_type (TYPE_TARGET_TYPE (type), spaces + 2);
3132 printfi_filtered (spaces, "pointer_type ");
3133 gdb_print_host_address (TYPE_POINTER_TYPE (type), gdb_stdout);
3134 printf_filtered ("\n");
3135 printfi_filtered (spaces, "reference_type ");
3136 gdb_print_host_address (TYPE_REFERENCE_TYPE (type), gdb_stdout);
3137 printf_filtered ("\n");
3138 printfi_filtered (spaces, "type_chain ");
3139 gdb_print_host_address (TYPE_CHAIN (type), gdb_stdout);
3140 printf_filtered ("\n");
3141 printfi_filtered (spaces, "instance_flags 0x%x",
3142 TYPE_INSTANCE_FLAGS (type));
3143 if (TYPE_CONST (type))
3145 puts_filtered (" TYPE_FLAG_CONST");
3147 if (TYPE_VOLATILE (type))
3149 puts_filtered (" TYPE_FLAG_VOLATILE");
3151 if (TYPE_CODE_SPACE (type))
3153 puts_filtered (" TYPE_FLAG_CODE_SPACE");
3155 if (TYPE_DATA_SPACE (type))
3157 puts_filtered (" TYPE_FLAG_DATA_SPACE");
3159 if (TYPE_ADDRESS_CLASS_1 (type))
3161 puts_filtered (" TYPE_FLAG_ADDRESS_CLASS_1");
3163 if (TYPE_ADDRESS_CLASS_2 (type))
3165 puts_filtered (" TYPE_FLAG_ADDRESS_CLASS_2");
3167 puts_filtered ("\n");
3169 printfi_filtered (spaces, "flags");
3170 if (TYPE_UNSIGNED (type))
3172 puts_filtered (" TYPE_FLAG_UNSIGNED");
3174 if (TYPE_NOSIGN (type))
3176 puts_filtered (" TYPE_FLAG_NOSIGN");
3178 if (TYPE_STUB (type))
3180 puts_filtered (" TYPE_FLAG_STUB");
3182 if (TYPE_TARGET_STUB (type))
3184 puts_filtered (" TYPE_FLAG_TARGET_STUB");
3186 if (TYPE_STATIC (type))
3188 puts_filtered (" TYPE_FLAG_STATIC");
3190 if (TYPE_PROTOTYPED (type))
3192 puts_filtered (" TYPE_FLAG_PROTOTYPED");
3194 if (TYPE_INCOMPLETE (type))
3196 puts_filtered (" TYPE_FLAG_INCOMPLETE");
3198 if (TYPE_VARARGS (type))
3200 puts_filtered (" TYPE_FLAG_VARARGS");
3202 /* This is used for things like AltiVec registers on ppc. Gcc emits
3203 an attribute for the array type, which tells whether or not we
3204 have a vector, instead of a regular array. */
3205 if (TYPE_VECTOR (type))
3207 puts_filtered (" TYPE_FLAG_VECTOR");
3209 if (TYPE_FIXED_INSTANCE (type))
3211 puts_filtered (" TYPE_FIXED_INSTANCE");
3213 if (TYPE_STUB_SUPPORTED (type))
3215 puts_filtered (" TYPE_STUB_SUPPORTED");
3217 if (TYPE_NOTTEXT (type))
3219 puts_filtered (" TYPE_NOTTEXT");
3221 puts_filtered ("\n");
3222 printfi_filtered (spaces, "nfields %d ", TYPE_NFIELDS (type));
3223 gdb_print_host_address (TYPE_FIELDS (type), gdb_stdout);
3224 puts_filtered ("\n");
3225 for (idx = 0; idx < TYPE_NFIELDS (type); idx++)
3227 if (TYPE_CODE (type) == TYPE_CODE_ENUM)
3228 printfi_filtered (spaces + 2,
3229 "[%d] enumval %s type ",
3230 idx, plongest (TYPE_FIELD_ENUMVAL (type, idx)));
3232 printfi_filtered (spaces + 2,
3233 "[%d] bitpos %d bitsize %d type ",
3234 idx, TYPE_FIELD_BITPOS (type, idx),
3235 TYPE_FIELD_BITSIZE (type, idx));
3236 gdb_print_host_address (TYPE_FIELD_TYPE (type, idx), gdb_stdout);
3237 printf_filtered (" name '%s' (",
3238 TYPE_FIELD_NAME (type, idx) != NULL
3239 ? TYPE_FIELD_NAME (type, idx)
3241 gdb_print_host_address (TYPE_FIELD_NAME (type, idx), gdb_stdout);
3242 printf_filtered (")\n");
3243 if (TYPE_FIELD_TYPE (type, idx) != NULL)
3245 recursive_dump_type (TYPE_FIELD_TYPE (type, idx), spaces + 4);
3248 if (TYPE_CODE (type) == TYPE_CODE_RANGE)
3250 printfi_filtered (spaces, "low %s%s high %s%s\n",
3251 plongest (TYPE_LOW_BOUND (type)),
3252 TYPE_LOW_BOUND_UNDEFINED (type) ? " (undefined)" : "",
3253 plongest (TYPE_HIGH_BOUND (type)),
3254 TYPE_HIGH_BOUND_UNDEFINED (type)
3255 ? " (undefined)" : "");
3257 printfi_filtered (spaces, "vptr_basetype ");
3258 gdb_print_host_address (TYPE_VPTR_BASETYPE (type), gdb_stdout);
3259 puts_filtered ("\n");
3260 if (TYPE_VPTR_BASETYPE (type) != NULL)
3262 recursive_dump_type (TYPE_VPTR_BASETYPE (type), spaces + 2);
3264 printfi_filtered (spaces, "vptr_fieldno %d\n",
3265 TYPE_VPTR_FIELDNO (type));
3267 switch (TYPE_SPECIFIC_FIELD (type))
3269 case TYPE_SPECIFIC_CPLUS_STUFF:
3270 printfi_filtered (spaces, "cplus_stuff ");
3271 gdb_print_host_address (TYPE_CPLUS_SPECIFIC (type),
3273 puts_filtered ("\n");
3274 print_cplus_stuff (type, spaces);
3277 case TYPE_SPECIFIC_GNAT_STUFF:
3278 printfi_filtered (spaces, "gnat_stuff ");
3279 gdb_print_host_address (TYPE_GNAT_SPECIFIC (type), gdb_stdout);
3280 puts_filtered ("\n");
3281 print_gnat_stuff (type, spaces);
3284 case TYPE_SPECIFIC_FLOATFORMAT:
3285 printfi_filtered (spaces, "floatformat ");
3286 if (TYPE_FLOATFORMAT (type) == NULL)
3287 puts_filtered ("(null)");
3290 puts_filtered ("{ ");
3291 if (TYPE_FLOATFORMAT (type)[0] == NULL
3292 || TYPE_FLOATFORMAT (type)[0]->name == NULL)
3293 puts_filtered ("(null)");
3295 puts_filtered (TYPE_FLOATFORMAT (type)[0]->name);
3297 puts_filtered (", ");
3298 if (TYPE_FLOATFORMAT (type)[1] == NULL
3299 || TYPE_FLOATFORMAT (type)[1]->name == NULL)
3300 puts_filtered ("(null)");
3302 puts_filtered (TYPE_FLOATFORMAT (type)[1]->name);
3304 puts_filtered (" }");
3306 puts_filtered ("\n");
3309 case TYPE_SPECIFIC_FUNC:
3310 printfi_filtered (spaces, "calling_convention %d\n",
3311 TYPE_CALLING_CONVENTION (type));
3312 /* tail_call_list is not printed. */
3317 obstack_free (&dont_print_type_obstack, NULL);
3320 /* Trivial helpers for the libiberty hash table, for mapping one
3325 struct type *old, *new;
3329 type_pair_hash (const void *item)
3331 const struct type_pair *pair = item;
3333 return htab_hash_pointer (pair->old);
3337 type_pair_eq (const void *item_lhs, const void *item_rhs)
3339 const struct type_pair *lhs = item_lhs, *rhs = item_rhs;
3341 return lhs->old == rhs->old;
3344 /* Allocate the hash table used by copy_type_recursive to walk
3345 types without duplicates. We use OBJFILE's obstack, because
3346 OBJFILE is about to be deleted. */
3349 create_copied_types_hash (struct objfile *objfile)
3351 return htab_create_alloc_ex (1, type_pair_hash, type_pair_eq,
3352 NULL, &objfile->objfile_obstack,
3353 hashtab_obstack_allocate,
3354 dummy_obstack_deallocate);
3357 /* Recursively copy (deep copy) TYPE, if it is associated with
3358 OBJFILE. Return a new type allocated using malloc, a saved type if
3359 we have already visited TYPE (using COPIED_TYPES), or TYPE if it is
3360 not associated with OBJFILE. */
3363 copy_type_recursive (struct objfile *objfile,
3365 htab_t copied_types)
3367 struct type_pair *stored, pair;
3369 struct type *new_type;
3371 if (! TYPE_OBJFILE_OWNED (type))
3374 /* This type shouldn't be pointing to any types in other objfiles;
3375 if it did, the type might disappear unexpectedly. */
3376 gdb_assert (TYPE_OBJFILE (type) == objfile);
3379 slot = htab_find_slot (copied_types, &pair, INSERT);
3381 return ((struct type_pair *) *slot)->new;
3383 new_type = alloc_type_arch (get_type_arch (type));
3385 /* We must add the new type to the hash table immediately, in case
3386 we encounter this type again during a recursive call below. */
3388 = obstack_alloc (&objfile->objfile_obstack, sizeof (struct type_pair));
3390 stored->new = new_type;
3393 /* Copy the common fields of types. For the main type, we simply
3394 copy the entire thing and then update specific fields as needed. */
3395 *TYPE_MAIN_TYPE (new_type) = *TYPE_MAIN_TYPE (type);
3396 TYPE_OBJFILE_OWNED (new_type) = 0;
3397 TYPE_OWNER (new_type).gdbarch = get_type_arch (type);
3399 if (TYPE_NAME (type))
3400 TYPE_NAME (new_type) = xstrdup (TYPE_NAME (type));
3401 if (TYPE_TAG_NAME (type))
3402 TYPE_TAG_NAME (new_type) = xstrdup (TYPE_TAG_NAME (type));
3404 TYPE_INSTANCE_FLAGS (new_type) = TYPE_INSTANCE_FLAGS (type);
3405 TYPE_LENGTH (new_type) = TYPE_LENGTH (type);
3407 /* Copy the fields. */
3408 if (TYPE_NFIELDS (type))
3412 nfields = TYPE_NFIELDS (type);
3413 TYPE_FIELDS (new_type) = XCALLOC (nfields, struct field);
3414 for (i = 0; i < nfields; i++)
3416 TYPE_FIELD_ARTIFICIAL (new_type, i) =
3417 TYPE_FIELD_ARTIFICIAL (type, i);
3418 TYPE_FIELD_BITSIZE (new_type, i) = TYPE_FIELD_BITSIZE (type, i);
3419 if (TYPE_FIELD_TYPE (type, i))
3420 TYPE_FIELD_TYPE (new_type, i)
3421 = copy_type_recursive (objfile, TYPE_FIELD_TYPE (type, i),
3423 if (TYPE_FIELD_NAME (type, i))
3424 TYPE_FIELD_NAME (new_type, i) =
3425 xstrdup (TYPE_FIELD_NAME (type, i));
3426 switch (TYPE_FIELD_LOC_KIND (type, i))
3428 case FIELD_LOC_KIND_BITPOS:
3429 SET_FIELD_BITPOS (TYPE_FIELD (new_type, i),
3430 TYPE_FIELD_BITPOS (type, i));
3432 case FIELD_LOC_KIND_ENUMVAL:
3433 SET_FIELD_ENUMVAL (TYPE_FIELD (new_type, i),
3434 TYPE_FIELD_ENUMVAL (type, i));
3436 case FIELD_LOC_KIND_PHYSADDR:
3437 SET_FIELD_PHYSADDR (TYPE_FIELD (new_type, i),
3438 TYPE_FIELD_STATIC_PHYSADDR (type, i));
3440 case FIELD_LOC_KIND_PHYSNAME:
3441 SET_FIELD_PHYSNAME (TYPE_FIELD (new_type, i),
3442 xstrdup (TYPE_FIELD_STATIC_PHYSNAME (type,
3446 internal_error (__FILE__, __LINE__,
3447 _("Unexpected type field location kind: %d"),
3448 TYPE_FIELD_LOC_KIND (type, i));
3453 /* For range types, copy the bounds information. */
3454 if (TYPE_CODE (type) == TYPE_CODE_RANGE)
3456 TYPE_RANGE_DATA (new_type) = xmalloc (sizeof (struct range_bounds));
3457 *TYPE_RANGE_DATA (new_type) = *TYPE_RANGE_DATA (type);
3460 /* Copy pointers to other types. */
3461 if (TYPE_TARGET_TYPE (type))
3462 TYPE_TARGET_TYPE (new_type) =
3463 copy_type_recursive (objfile,
3464 TYPE_TARGET_TYPE (type),
3466 if (TYPE_VPTR_BASETYPE (type))
3467 TYPE_VPTR_BASETYPE (new_type) =
3468 copy_type_recursive (objfile,
3469 TYPE_VPTR_BASETYPE (type),
3471 /* Maybe copy the type_specific bits.
3473 NOTE drow/2005-12-09: We do not copy the C++-specific bits like
3474 base classes and methods. There's no fundamental reason why we
3475 can't, but at the moment it is not needed. */
3477 if (TYPE_CODE (type) == TYPE_CODE_FLT)
3478 TYPE_FLOATFORMAT (new_type) = TYPE_FLOATFORMAT (type);
3479 else if (TYPE_CODE (type) == TYPE_CODE_STRUCT
3480 || TYPE_CODE (type) == TYPE_CODE_UNION
3481 || TYPE_CODE (type) == TYPE_CODE_NAMESPACE)
3482 INIT_CPLUS_SPECIFIC (new_type);
3487 /* Make a copy of the given TYPE, except that the pointer & reference
3488 types are not preserved.
3490 This function assumes that the given type has an associated objfile.
3491 This objfile is used to allocate the new type. */
3494 copy_type (const struct type *type)
3496 struct type *new_type;
3498 gdb_assert (TYPE_OBJFILE_OWNED (type));
3500 new_type = alloc_type_copy (type);
3501 TYPE_INSTANCE_FLAGS (new_type) = TYPE_INSTANCE_FLAGS (type);
3502 TYPE_LENGTH (new_type) = TYPE_LENGTH (type);
3503 memcpy (TYPE_MAIN_TYPE (new_type), TYPE_MAIN_TYPE (type),
3504 sizeof (struct main_type));
3510 /* Helper functions to initialize architecture-specific types. */
3512 /* Allocate a type structure associated with GDBARCH and set its
3513 CODE, LENGTH, and NAME fields. */
3515 arch_type (struct gdbarch *gdbarch,
3516 enum type_code code, int length, char *name)
3520 type = alloc_type_arch (gdbarch);
3521 TYPE_CODE (type) = code;
3522 TYPE_LENGTH (type) = length;
3525 TYPE_NAME (type) = xstrdup (name);
3530 /* Allocate a TYPE_CODE_INT type structure associated with GDBARCH.
3531 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
3532 the type's TYPE_UNSIGNED flag. NAME is the type name. */
3534 arch_integer_type (struct gdbarch *gdbarch,
3535 int bit, int unsigned_p, char *name)
3539 t = arch_type (gdbarch, TYPE_CODE_INT, bit / TARGET_CHAR_BIT, name);
3541 TYPE_UNSIGNED (t) = 1;
3542 if (name && strcmp (name, "char") == 0)
3543 TYPE_NOSIGN (t) = 1;
3548 /* Allocate a TYPE_CODE_CHAR type structure associated with GDBARCH.
3549 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
3550 the type's TYPE_UNSIGNED flag. NAME is the type name. */
3552 arch_character_type (struct gdbarch *gdbarch,
3553 int bit, int unsigned_p, char *name)
3557 t = arch_type (gdbarch, TYPE_CODE_CHAR, bit / TARGET_CHAR_BIT, name);
3559 TYPE_UNSIGNED (t) = 1;
3564 /* Allocate a TYPE_CODE_BOOL type structure associated with GDBARCH.
3565 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
3566 the type's TYPE_UNSIGNED flag. NAME is the type name. */
3568 arch_boolean_type (struct gdbarch *gdbarch,
3569 int bit, int unsigned_p, char *name)
3573 t = arch_type (gdbarch, TYPE_CODE_BOOL, bit / TARGET_CHAR_BIT, name);
3575 TYPE_UNSIGNED (t) = 1;
3580 /* Allocate a TYPE_CODE_FLT type structure associated with GDBARCH.
3581 BIT is the type size in bits; if BIT equals -1, the size is
3582 determined by the floatformat. NAME is the type name. Set the
3583 TYPE_FLOATFORMAT from FLOATFORMATS. */
3585 arch_float_type (struct gdbarch *gdbarch,
3586 int bit, char *name, const struct floatformat **floatformats)
3592 gdb_assert (floatformats != NULL);
3593 gdb_assert (floatformats[0] != NULL && floatformats[1] != NULL);
3594 bit = floatformats[0]->totalsize;
3596 gdb_assert (bit >= 0);
3598 t = arch_type (gdbarch, TYPE_CODE_FLT, bit / TARGET_CHAR_BIT, name);
3599 TYPE_FLOATFORMAT (t) = floatformats;
3603 /* Allocate a TYPE_CODE_COMPLEX type structure associated with GDBARCH.
3604 NAME is the type name. TARGET_TYPE is the component float type. */
3606 arch_complex_type (struct gdbarch *gdbarch,
3607 char *name, struct type *target_type)
3611 t = arch_type (gdbarch, TYPE_CODE_COMPLEX,
3612 2 * TYPE_LENGTH (target_type), name);
3613 TYPE_TARGET_TYPE (t) = target_type;
3617 /* Allocate a TYPE_CODE_FLAGS type structure associated with GDBARCH.
3618 NAME is the type name. LENGTH is the size of the flag word in bytes. */
3620 arch_flags_type (struct gdbarch *gdbarch, char *name, int length)
3622 int nfields = length * TARGET_CHAR_BIT;
3625 type = arch_type (gdbarch, TYPE_CODE_FLAGS, length, name);
3626 TYPE_UNSIGNED (type) = 1;
3627 TYPE_NFIELDS (type) = nfields;
3628 TYPE_FIELDS (type) = TYPE_ZALLOC (type, nfields * sizeof (struct field));
3633 /* Add field to TYPE_CODE_FLAGS type TYPE to indicate the bit at
3634 position BITPOS is called NAME. */
3636 append_flags_type_flag (struct type *type, int bitpos, char *name)
3638 gdb_assert (TYPE_CODE (type) == TYPE_CODE_FLAGS);
3639 gdb_assert (bitpos < TYPE_NFIELDS (type));
3640 gdb_assert (bitpos >= 0);
3644 TYPE_FIELD_NAME (type, bitpos) = xstrdup (name);
3645 SET_FIELD_BITPOS (TYPE_FIELD (type, bitpos), bitpos);
3649 /* Don't show this field to the user. */
3650 SET_FIELD_BITPOS (TYPE_FIELD (type, bitpos), -1);
3654 /* Allocate a TYPE_CODE_STRUCT or TYPE_CODE_UNION type structure (as
3655 specified by CODE) associated with GDBARCH. NAME is the type name. */
3657 arch_composite_type (struct gdbarch *gdbarch, char *name, enum type_code code)
3661 gdb_assert (code == TYPE_CODE_STRUCT || code == TYPE_CODE_UNION);
3662 t = arch_type (gdbarch, code, 0, NULL);
3663 TYPE_TAG_NAME (t) = name;
3664 INIT_CPLUS_SPECIFIC (t);
3668 /* Add new field with name NAME and type FIELD to composite type T.
3669 Do not set the field's position or adjust the type's length;
3670 the caller should do so. Return the new field. */
3672 append_composite_type_field_raw (struct type *t, char *name,
3677 TYPE_NFIELDS (t) = TYPE_NFIELDS (t) + 1;
3678 TYPE_FIELDS (t) = xrealloc (TYPE_FIELDS (t),
3679 sizeof (struct field) * TYPE_NFIELDS (t));
3680 f = &(TYPE_FIELDS (t)[TYPE_NFIELDS (t) - 1]);
3681 memset (f, 0, sizeof f[0]);
3682 FIELD_TYPE (f[0]) = field;
3683 FIELD_NAME (f[0]) = name;
3687 /* Add new field with name NAME and type FIELD to composite type T.
3688 ALIGNMENT (if non-zero) specifies the minimum field alignment. */
3690 append_composite_type_field_aligned (struct type *t, char *name,
3691 struct type *field, int alignment)
3693 struct field *f = append_composite_type_field_raw (t, name, field);
3695 if (TYPE_CODE (t) == TYPE_CODE_UNION)
3697 if (TYPE_LENGTH (t) < TYPE_LENGTH (field))
3698 TYPE_LENGTH (t) = TYPE_LENGTH (field);
3700 else if (TYPE_CODE (t) == TYPE_CODE_STRUCT)
3702 TYPE_LENGTH (t) = TYPE_LENGTH (t) + TYPE_LENGTH (field);
3703 if (TYPE_NFIELDS (t) > 1)
3705 SET_FIELD_BITPOS (f[0],
3706 (FIELD_BITPOS (f[-1])
3707 + (TYPE_LENGTH (FIELD_TYPE (f[-1]))
3708 * TARGET_CHAR_BIT)));
3714 alignment *= TARGET_CHAR_BIT;
3715 left = FIELD_BITPOS (f[0]) % alignment;
3719 SET_FIELD_BITPOS (f[0], FIELD_BITPOS (f[0]) + (alignment - left));
3720 TYPE_LENGTH (t) += (alignment - left) / TARGET_CHAR_BIT;
3727 /* Add new field with name NAME and type FIELD to composite type T. */
3729 append_composite_type_field (struct type *t, char *name,
3732 append_composite_type_field_aligned (t, name, field, 0);
3736 static struct gdbarch_data *gdbtypes_data;
3738 const struct builtin_type *
3739 builtin_type (struct gdbarch *gdbarch)
3741 return gdbarch_data (gdbarch, gdbtypes_data);
3745 gdbtypes_post_init (struct gdbarch *gdbarch)
3747 struct builtin_type *builtin_type
3748 = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct builtin_type);
3751 builtin_type->builtin_void
3752 = arch_type (gdbarch, TYPE_CODE_VOID, 1, "void");
3753 builtin_type->builtin_char
3754 = arch_integer_type (gdbarch, TARGET_CHAR_BIT,
3755 !gdbarch_char_signed (gdbarch), "char");
3756 builtin_type->builtin_signed_char
3757 = arch_integer_type (gdbarch, TARGET_CHAR_BIT,
3759 builtin_type->builtin_unsigned_char
3760 = arch_integer_type (gdbarch, TARGET_CHAR_BIT,
3761 1, "unsigned char");
3762 builtin_type->builtin_short
3763 = arch_integer_type (gdbarch, gdbarch_short_bit (gdbarch),
3765 builtin_type->builtin_unsigned_short
3766 = arch_integer_type (gdbarch, gdbarch_short_bit (gdbarch),
3767 1, "unsigned short");
3768 builtin_type->builtin_int
3769 = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch),
3771 builtin_type->builtin_unsigned_int
3772 = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch),
3774 builtin_type->builtin_long
3775 = arch_integer_type (gdbarch, gdbarch_long_bit (gdbarch),
3777 builtin_type->builtin_unsigned_long
3778 = arch_integer_type (gdbarch, gdbarch_long_bit (gdbarch),
3779 1, "unsigned long");
3780 builtin_type->builtin_long_long
3781 = arch_integer_type (gdbarch, gdbarch_long_long_bit (gdbarch),
3783 builtin_type->builtin_unsigned_long_long
3784 = arch_integer_type (gdbarch, gdbarch_long_long_bit (gdbarch),
3785 1, "unsigned long long");
3786 builtin_type->builtin_float
3787 = arch_float_type (gdbarch, gdbarch_float_bit (gdbarch),
3788 "float", gdbarch_float_format (gdbarch));
3789 builtin_type->builtin_double
3790 = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch),
3791 "double", gdbarch_double_format (gdbarch));
3792 builtin_type->builtin_long_double
3793 = arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch),
3794 "long double", gdbarch_long_double_format (gdbarch));
3795 builtin_type->builtin_complex
3796 = arch_complex_type (gdbarch, "complex",
3797 builtin_type->builtin_float);
3798 builtin_type->builtin_double_complex
3799 = arch_complex_type (gdbarch, "double complex",
3800 builtin_type->builtin_double);
3801 builtin_type->builtin_string
3802 = arch_type (gdbarch, TYPE_CODE_STRING, 1, "string");
3803 builtin_type->builtin_bool
3804 = arch_type (gdbarch, TYPE_CODE_BOOL, 1, "bool");
3806 /* The following three are about decimal floating point types, which
3807 are 32-bits, 64-bits and 128-bits respectively. */
3808 builtin_type->builtin_decfloat
3809 = arch_type (gdbarch, TYPE_CODE_DECFLOAT, 32 / 8, "_Decimal32");
3810 builtin_type->builtin_decdouble
3811 = arch_type (gdbarch, TYPE_CODE_DECFLOAT, 64 / 8, "_Decimal64");
3812 builtin_type->builtin_declong
3813 = arch_type (gdbarch, TYPE_CODE_DECFLOAT, 128 / 8, "_Decimal128");
3815 /* "True" character types. */
3816 builtin_type->builtin_true_char
3817 = arch_character_type (gdbarch, TARGET_CHAR_BIT, 0, "true character");
3818 builtin_type->builtin_true_unsigned_char
3819 = arch_character_type (gdbarch, TARGET_CHAR_BIT, 1, "true character");
3821 /* Fixed-size integer types. */
3822 builtin_type->builtin_int0
3823 = arch_integer_type (gdbarch, 0, 0, "int0_t");
3824 builtin_type->builtin_int8
3825 = arch_integer_type (gdbarch, 8, 0, "int8_t");
3826 builtin_type->builtin_uint8
3827 = arch_integer_type (gdbarch, 8, 1, "uint8_t");
3828 builtin_type->builtin_int16
3829 = arch_integer_type (gdbarch, 16, 0, "int16_t");
3830 builtin_type->builtin_uint16
3831 = arch_integer_type (gdbarch, 16, 1, "uint16_t");
3832 builtin_type->builtin_int32
3833 = arch_integer_type (gdbarch, 32, 0, "int32_t");
3834 builtin_type->builtin_uint32
3835 = arch_integer_type (gdbarch, 32, 1, "uint32_t");
3836 builtin_type->builtin_int64
3837 = arch_integer_type (gdbarch, 64, 0, "int64_t");
3838 builtin_type->builtin_uint64
3839 = arch_integer_type (gdbarch, 64, 1, "uint64_t");
3840 builtin_type->builtin_int128
3841 = arch_integer_type (gdbarch, 128, 0, "int128_t");
3842 builtin_type->builtin_uint128
3843 = arch_integer_type (gdbarch, 128, 1, "uint128_t");
3844 TYPE_INSTANCE_FLAGS (builtin_type->builtin_int8) |=
3845 TYPE_INSTANCE_FLAG_NOTTEXT;
3846 TYPE_INSTANCE_FLAGS (builtin_type->builtin_uint8) |=
3847 TYPE_INSTANCE_FLAG_NOTTEXT;
3849 /* Wide character types. */
3850 builtin_type->builtin_char16
3851 = arch_integer_type (gdbarch, 16, 0, "char16_t");
3852 builtin_type->builtin_char32
3853 = arch_integer_type (gdbarch, 32, 0, "char32_t");
3856 /* Default data/code pointer types. */
3857 builtin_type->builtin_data_ptr
3858 = lookup_pointer_type (builtin_type->builtin_void);
3859 builtin_type->builtin_func_ptr
3860 = lookup_pointer_type (lookup_function_type (builtin_type->builtin_void));
3861 builtin_type->builtin_func_func
3862 = lookup_function_type (builtin_type->builtin_func_ptr);
3864 /* This type represents a GDB internal function. */
3865 builtin_type->internal_fn
3866 = arch_type (gdbarch, TYPE_CODE_INTERNAL_FUNCTION, 0,
3867 "<internal function>");
3869 return builtin_type;
3873 /* This set of objfile-based types is intended to be used by symbol
3874 readers as basic types. */
3876 static const struct objfile_data *objfile_type_data;
3878 const struct objfile_type *
3879 objfile_type (struct objfile *objfile)
3881 struct gdbarch *gdbarch;
3882 struct objfile_type *objfile_type
3883 = objfile_data (objfile, objfile_type_data);
3886 return objfile_type;
3888 objfile_type = OBSTACK_CALLOC (&objfile->objfile_obstack,
3889 1, struct objfile_type);
3891 /* Use the objfile architecture to determine basic type properties. */
3892 gdbarch = get_objfile_arch (objfile);
3895 objfile_type->builtin_void
3896 = init_type (TYPE_CODE_VOID, 1,
3900 objfile_type->builtin_char
3901 = init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
3903 | (gdbarch_char_signed (gdbarch) ? 0 : TYPE_FLAG_UNSIGNED)),
3905 objfile_type->builtin_signed_char
3906 = init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
3908 "signed char", objfile);
3909 objfile_type->builtin_unsigned_char
3910 = init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
3912 "unsigned char", objfile);
3913 objfile_type->builtin_short
3914 = init_type (TYPE_CODE_INT,
3915 gdbarch_short_bit (gdbarch) / TARGET_CHAR_BIT,
3916 0, "short", objfile);
3917 objfile_type->builtin_unsigned_short
3918 = init_type (TYPE_CODE_INT,
3919 gdbarch_short_bit (gdbarch) / TARGET_CHAR_BIT,
3920 TYPE_FLAG_UNSIGNED, "unsigned short", objfile);
3921 objfile_type->builtin_int
3922 = init_type (TYPE_CODE_INT,
3923 gdbarch_int_bit (gdbarch) / TARGET_CHAR_BIT,
3925 objfile_type->builtin_unsigned_int
3926 = init_type (TYPE_CODE_INT,
3927 gdbarch_int_bit (gdbarch) / TARGET_CHAR_BIT,
3928 TYPE_FLAG_UNSIGNED, "unsigned int", objfile);
3929 objfile_type->builtin_long
3930 = init_type (TYPE_CODE_INT,
3931 gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT,
3932 0, "long", objfile);
3933 objfile_type->builtin_unsigned_long
3934 = init_type (TYPE_CODE_INT,
3935 gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT,
3936 TYPE_FLAG_UNSIGNED, "unsigned long", objfile);
3937 objfile_type->builtin_long_long
3938 = init_type (TYPE_CODE_INT,
3939 gdbarch_long_long_bit (gdbarch) / TARGET_CHAR_BIT,
3940 0, "long long", objfile);
3941 objfile_type->builtin_unsigned_long_long
3942 = init_type (TYPE_CODE_INT,
3943 gdbarch_long_long_bit (gdbarch) / TARGET_CHAR_BIT,
3944 TYPE_FLAG_UNSIGNED, "unsigned long long", objfile);
3946 objfile_type->builtin_float
3947 = init_type (TYPE_CODE_FLT,
3948 gdbarch_float_bit (gdbarch) / TARGET_CHAR_BIT,
3949 0, "float", objfile);
3950 TYPE_FLOATFORMAT (objfile_type->builtin_float)
3951 = gdbarch_float_format (gdbarch);
3952 objfile_type->builtin_double
3953 = init_type (TYPE_CODE_FLT,
3954 gdbarch_double_bit (gdbarch) / TARGET_CHAR_BIT,
3955 0, "double", objfile);
3956 TYPE_FLOATFORMAT (objfile_type->builtin_double)
3957 = gdbarch_double_format (gdbarch);
3958 objfile_type->builtin_long_double
3959 = init_type (TYPE_CODE_FLT,
3960 gdbarch_long_double_bit (gdbarch) / TARGET_CHAR_BIT,
3961 0, "long double", objfile);
3962 TYPE_FLOATFORMAT (objfile_type->builtin_long_double)
3963 = gdbarch_long_double_format (gdbarch);
3965 /* This type represents a type that was unrecognized in symbol read-in. */
3966 objfile_type->builtin_error
3967 = init_type (TYPE_CODE_ERROR, 0, 0, "<unknown type>", objfile);
3969 /* The following set of types is used for symbols with no
3970 debug information. */
3971 objfile_type->nodebug_text_symbol
3972 = init_type (TYPE_CODE_FUNC, 1, 0,
3973 "<text variable, no debug info>", objfile);
3974 TYPE_TARGET_TYPE (objfile_type->nodebug_text_symbol)
3975 = objfile_type->builtin_int;
3976 objfile_type->nodebug_text_gnu_ifunc_symbol
3977 = init_type (TYPE_CODE_FUNC, 1, TYPE_FLAG_GNU_IFUNC,
3978 "<text gnu-indirect-function variable, no debug info>",
3980 TYPE_TARGET_TYPE (objfile_type->nodebug_text_gnu_ifunc_symbol)
3981 = objfile_type->nodebug_text_symbol;
3982 objfile_type->nodebug_got_plt_symbol
3983 = init_type (TYPE_CODE_PTR, gdbarch_addr_bit (gdbarch) / 8, 0,
3984 "<text from jump slot in .got.plt, no debug info>",
3986 TYPE_TARGET_TYPE (objfile_type->nodebug_got_plt_symbol)
3987 = objfile_type->nodebug_text_symbol;
3988 objfile_type->nodebug_data_symbol
3989 = init_type (TYPE_CODE_INT,
3990 gdbarch_int_bit (gdbarch) / HOST_CHAR_BIT, 0,
3991 "<data variable, no debug info>", objfile);
3992 objfile_type->nodebug_unknown_symbol
3993 = init_type (TYPE_CODE_INT, 1, 0,
3994 "<variable (not text or data), no debug info>", objfile);
3995 objfile_type->nodebug_tls_symbol
3996 = init_type (TYPE_CODE_INT,
3997 gdbarch_int_bit (gdbarch) / HOST_CHAR_BIT, 0,
3998 "<thread local variable, no debug info>", objfile);
4000 /* NOTE: on some targets, addresses and pointers are not necessarily
4001 the same --- for example, on the D10V, pointers are 16 bits long,
4002 but addresses are 32 bits long. See doc/gdbint.texinfo,
4003 ``Pointers Are Not Always Addresses''.
4006 - gdb's `struct type' always describes the target's
4008 - gdb's `struct value' objects should always hold values in
4010 - gdb's CORE_ADDR values are addresses in the unified virtual
4011 address space that the assembler and linker work with. Thus,
4012 since target_read_memory takes a CORE_ADDR as an argument, it
4013 can access any memory on the target, even if the processor has
4014 separate code and data address spaces.
4017 - If v is a value holding a D10V code pointer, its contents are
4018 in target form: a big-endian address left-shifted two bits.
4019 - If p is a D10V pointer type, TYPE_LENGTH (p) == 2, just as
4020 sizeof (void *) == 2 on the target.
4022 In this context, objfile_type->builtin_core_addr is a bit odd:
4023 it's a target type for a value the target will never see. It's
4024 only used to hold the values of (typeless) linker symbols, which
4025 are indeed in the unified virtual address space. */
4027 objfile_type->builtin_core_addr
4028 = init_type (TYPE_CODE_INT,
4029 gdbarch_addr_bit (gdbarch) / 8,
4030 TYPE_FLAG_UNSIGNED, "__CORE_ADDR", objfile);
4032 set_objfile_data (objfile, objfile_type_data, objfile_type);
4033 return objfile_type;
4037 extern void _initialize_gdbtypes (void);
4039 _initialize_gdbtypes (void)
4041 gdbtypes_data = gdbarch_data_register_post_init (gdbtypes_post_init);
4042 objfile_type_data = register_objfile_data ();
4044 add_setshow_zuinteger_cmd ("overload", no_class, &overload_debug,
4045 _("Set debugging of C++ overloading."),
4046 _("Show debugging of C++ overloading."),
4047 _("When enabled, ranking of the "
4048 "functions is displayed."),
4050 show_overload_debug,
4051 &setdebuglist, &showdebuglist);
4053 /* Add user knob for controlling resolution of opaque types. */
4054 add_setshow_boolean_cmd ("opaque-type-resolution", class_support,
4055 &opaque_type_resolution,
4056 _("Set resolution of opaque struct/class/union"
4057 " types (if set before loading symbols)."),
4058 _("Show resolution of opaque struct/class/union"
4059 " types (if set before loading symbols)."),
4061 show_opaque_type_resolution,
4062 &setlist, &showlist);