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
113 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;
128 show_overload_debug (struct ui_file *file, int from_tty,
129 struct cmd_list_element *c, const char *value)
131 fprintf_filtered (file, _("Debugging of C++ overloading is %s.\n"),
135 static void print_bit_vector (B_TYPE *, int);
136 static void print_arg_types (struct field *, int, int);
137 static void dump_fn_fieldlists (struct type *, int);
138 static void print_cplus_stuff (struct type *, int);
140 /* Allocate a new OBJFILE-associated type structure and fill it
141 with some defaults. Space for the type structure is allocated
142 on the objfile's objfile_obstack. */
145 alloc_type (struct objfile *objfile)
149 gdb_assert (objfile != NULL);
151 /* Alloc the structure and start off with all fields zeroed. */
152 type = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct type);
153 TYPE_MAIN_TYPE (type) = OBSTACK_ZALLOC (&objfile->objfile_obstack,
155 OBJSTAT (objfile, n_types++);
157 TYPE_OBJFILE_OWNED (type) = 1;
158 TYPE_OWNER (type).objfile = objfile;
160 /* Initialize the fields that might not be zero. */
162 TYPE_CODE (type) = TYPE_CODE_UNDEF;
163 TYPE_VPTR_FIELDNO (type) = -1;
164 TYPE_CHAIN (type) = type; /* Chain back to itself. */
169 /* Allocate a new GDBARCH-associated type structure and fill it
170 with some defaults. Space for the type structure is allocated
174 alloc_type_arch (struct gdbarch *gdbarch)
178 gdb_assert (gdbarch != NULL);
180 /* Alloc the structure and start off with all fields zeroed. */
182 type = XZALLOC (struct type);
183 TYPE_MAIN_TYPE (type) = XZALLOC (struct main_type);
185 TYPE_OBJFILE_OWNED (type) = 0;
186 TYPE_OWNER (type).gdbarch = gdbarch;
188 /* Initialize the fields that might not be zero. */
190 TYPE_CODE (type) = TYPE_CODE_UNDEF;
191 TYPE_VPTR_FIELDNO (type) = -1;
192 TYPE_CHAIN (type) = type; /* Chain back to itself. */
197 /* If TYPE is objfile-associated, allocate a new type structure
198 associated with the same objfile. If TYPE is gdbarch-associated,
199 allocate a new type structure associated with the same gdbarch. */
202 alloc_type_copy (const struct type *type)
204 if (TYPE_OBJFILE_OWNED (type))
205 return alloc_type (TYPE_OWNER (type).objfile);
207 return alloc_type_arch (TYPE_OWNER (type).gdbarch);
210 /* If TYPE is gdbarch-associated, return that architecture.
211 If TYPE is objfile-associated, return that objfile's architecture. */
214 get_type_arch (const struct type *type)
216 if (TYPE_OBJFILE_OWNED (type))
217 return get_objfile_arch (TYPE_OWNER (type).objfile);
219 return TYPE_OWNER (type).gdbarch;
222 /* Alloc a new type instance structure, fill it with some defaults,
223 and point it at OLDTYPE. Allocate the new type instance from the
224 same place as OLDTYPE. */
227 alloc_type_instance (struct type *oldtype)
231 /* Allocate the structure. */
233 if (! TYPE_OBJFILE_OWNED (oldtype))
234 type = XZALLOC (struct type);
236 type = OBSTACK_ZALLOC (&TYPE_OBJFILE (oldtype)->objfile_obstack,
239 TYPE_MAIN_TYPE (type) = TYPE_MAIN_TYPE (oldtype);
241 TYPE_CHAIN (type) = type; /* Chain back to itself for now. */
246 /* Clear all remnants of the previous type at TYPE, in preparation for
247 replacing it with something else. Preserve owner information. */
250 smash_type (struct type *type)
252 int objfile_owned = TYPE_OBJFILE_OWNED (type);
253 union type_owner owner = TYPE_OWNER (type);
255 memset (TYPE_MAIN_TYPE (type), 0, sizeof (struct main_type));
257 /* Restore owner information. */
258 TYPE_OBJFILE_OWNED (type) = objfile_owned;
259 TYPE_OWNER (type) = owner;
261 /* For now, delete the rings. */
262 TYPE_CHAIN (type) = type;
264 /* For now, leave the pointer/reference types alone. */
267 /* Lookup a pointer to a type TYPE. TYPEPTR, if nonzero, points
268 to a pointer to memory where the pointer type should be stored.
269 If *TYPEPTR is zero, update it to point to the pointer type we return.
270 We allocate new memory if needed. */
273 make_pointer_type (struct type *type, struct type **typeptr)
275 struct type *ntype; /* New type */
278 ntype = TYPE_POINTER_TYPE (type);
283 return ntype; /* Don't care about alloc,
284 and have new type. */
285 else if (*typeptr == 0)
287 *typeptr = ntype; /* Tracking alloc, and have new type. */
292 if (typeptr == 0 || *typeptr == 0) /* We'll need to allocate one. */
294 ntype = alloc_type_copy (type);
298 else /* We have storage, but need to reset it. */
301 chain = TYPE_CHAIN (ntype);
303 TYPE_CHAIN (ntype) = chain;
306 TYPE_TARGET_TYPE (ntype) = type;
307 TYPE_POINTER_TYPE (type) = ntype;
309 /* FIXME! Assumes the machine has only one representation for pointers! */
312 = gdbarch_ptr_bit (get_type_arch (type)) / TARGET_CHAR_BIT;
313 TYPE_CODE (ntype) = TYPE_CODE_PTR;
315 /* Mark pointers as unsigned. The target converts between pointers
316 and addresses (CORE_ADDRs) using gdbarch_pointer_to_address and
317 gdbarch_address_to_pointer. */
318 TYPE_UNSIGNED (ntype) = 1;
320 /* Update the length of all the other variants of this type. */
321 chain = TYPE_CHAIN (ntype);
322 while (chain != ntype)
324 TYPE_LENGTH (chain) = TYPE_LENGTH (ntype);
325 chain = TYPE_CHAIN (chain);
331 /* Given a type TYPE, return a type of pointers to that type.
332 May need to construct such a type if this is the first use. */
335 lookup_pointer_type (struct type *type)
337 return make_pointer_type (type, (struct type **) 0);
340 /* Lookup a C++ `reference' to a type TYPE. TYPEPTR, if nonzero,
341 points to a pointer to memory where the reference type should be
342 stored. If *TYPEPTR is zero, update it to point to the reference
343 type we return. We allocate new memory if needed. */
346 make_reference_type (struct type *type, struct type **typeptr)
348 struct type *ntype; /* New type */
351 ntype = TYPE_REFERENCE_TYPE (type);
356 return ntype; /* Don't care about alloc,
357 and have new type. */
358 else if (*typeptr == 0)
360 *typeptr = ntype; /* Tracking alloc, and have new type. */
365 if (typeptr == 0 || *typeptr == 0) /* We'll need to allocate one. */
367 ntype = alloc_type_copy (type);
371 else /* We have storage, but need to reset it. */
374 chain = TYPE_CHAIN (ntype);
376 TYPE_CHAIN (ntype) = chain;
379 TYPE_TARGET_TYPE (ntype) = type;
380 TYPE_REFERENCE_TYPE (type) = ntype;
382 /* FIXME! Assume the machine has only one representation for
383 references, and that it matches the (only) representation for
386 TYPE_LENGTH (ntype) =
387 gdbarch_ptr_bit (get_type_arch (type)) / TARGET_CHAR_BIT;
388 TYPE_CODE (ntype) = TYPE_CODE_REF;
390 if (!TYPE_REFERENCE_TYPE (type)) /* Remember it, if don't have one. */
391 TYPE_REFERENCE_TYPE (type) = ntype;
393 /* Update the length of all the other variants of this type. */
394 chain = TYPE_CHAIN (ntype);
395 while (chain != ntype)
397 TYPE_LENGTH (chain) = TYPE_LENGTH (ntype);
398 chain = TYPE_CHAIN (chain);
404 /* Same as above, but caller doesn't care about memory allocation
408 lookup_reference_type (struct type *type)
410 return make_reference_type (type, (struct type **) 0);
413 /* Lookup a function type that returns type TYPE. TYPEPTR, if
414 nonzero, points to a pointer to memory where the function type
415 should be stored. If *TYPEPTR is zero, update it to point to the
416 function type we return. We allocate new memory if needed. */
419 make_function_type (struct type *type, struct type **typeptr)
421 struct type *ntype; /* New type */
423 if (typeptr == 0 || *typeptr == 0) /* We'll need to allocate one. */
425 ntype = alloc_type_copy (type);
429 else /* We have storage, but need to reset it. */
435 TYPE_TARGET_TYPE (ntype) = type;
437 TYPE_LENGTH (ntype) = 1;
438 TYPE_CODE (ntype) = TYPE_CODE_FUNC;
440 INIT_FUNC_SPECIFIC (ntype);
445 /* Given a type TYPE, return a type of functions that return that type.
446 May need to construct such a type if this is the first use. */
449 lookup_function_type (struct type *type)
451 return make_function_type (type, (struct type **) 0);
454 /* Given a type TYPE and argument types, return the appropriate
455 function type. If the final type in PARAM_TYPES is NULL, make a
459 lookup_function_type_with_arguments (struct type *type,
461 struct type **param_types)
463 struct type *fn = make_function_type (type, (struct type **) 0);
468 if (param_types[nparams - 1] == NULL)
471 TYPE_VARARGS (fn) = 1;
473 else if (TYPE_CODE (check_typedef (param_types[nparams - 1]))
477 /* Caller should have ensured this. */
478 gdb_assert (nparams == 0);
479 TYPE_PROTOTYPED (fn) = 1;
483 TYPE_NFIELDS (fn) = nparams;
484 TYPE_FIELDS (fn) = TYPE_ZALLOC (fn, nparams * sizeof (struct field));
485 for (i = 0; i < nparams; ++i)
486 TYPE_FIELD_TYPE (fn, i) = param_types[i];
491 /* Identify address space identifier by name --
492 return the integer flag defined in gdbtypes.h. */
495 address_space_name_to_int (struct gdbarch *gdbarch, char *space_identifier)
499 /* Check for known address space delimiters. */
500 if (!strcmp (space_identifier, "code"))
501 return TYPE_INSTANCE_FLAG_CODE_SPACE;
502 else if (!strcmp (space_identifier, "data"))
503 return TYPE_INSTANCE_FLAG_DATA_SPACE;
504 else if (gdbarch_address_class_name_to_type_flags_p (gdbarch)
505 && gdbarch_address_class_name_to_type_flags (gdbarch,
510 error (_("Unknown address space specifier: \"%s\""), space_identifier);
513 /* Identify address space identifier by integer flag as defined in
514 gdbtypes.h -- return the string version of the adress space name. */
517 address_space_int_to_name (struct gdbarch *gdbarch, int space_flag)
519 if (space_flag & TYPE_INSTANCE_FLAG_CODE_SPACE)
521 else if (space_flag & TYPE_INSTANCE_FLAG_DATA_SPACE)
523 else if ((space_flag & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL)
524 && gdbarch_address_class_type_flags_to_name_p (gdbarch))
525 return gdbarch_address_class_type_flags_to_name (gdbarch, space_flag);
530 /* Create a new type with instance flags NEW_FLAGS, based on TYPE.
532 If STORAGE is non-NULL, create the new type instance there.
533 STORAGE must be in the same obstack as TYPE. */
536 make_qualified_type (struct type *type, int new_flags,
537 struct type *storage)
544 if (TYPE_INSTANCE_FLAGS (ntype) == new_flags)
546 ntype = TYPE_CHAIN (ntype);
548 while (ntype != type);
550 /* Create a new type instance. */
552 ntype = alloc_type_instance (type);
555 /* If STORAGE was provided, it had better be in the same objfile
556 as TYPE. Otherwise, we can't link it into TYPE's cv chain:
557 if one objfile is freed and the other kept, we'd have
558 dangling pointers. */
559 gdb_assert (TYPE_OBJFILE (type) == TYPE_OBJFILE (storage));
562 TYPE_MAIN_TYPE (ntype) = TYPE_MAIN_TYPE (type);
563 TYPE_CHAIN (ntype) = ntype;
566 /* Pointers or references to the original type are not relevant to
568 TYPE_POINTER_TYPE (ntype) = (struct type *) 0;
569 TYPE_REFERENCE_TYPE (ntype) = (struct type *) 0;
571 /* Chain the new qualified type to the old type. */
572 TYPE_CHAIN (ntype) = TYPE_CHAIN (type);
573 TYPE_CHAIN (type) = ntype;
575 /* Now set the instance flags and return the new type. */
576 TYPE_INSTANCE_FLAGS (ntype) = new_flags;
578 /* Set length of new type to that of the original type. */
579 TYPE_LENGTH (ntype) = TYPE_LENGTH (type);
584 /* Make an address-space-delimited variant of a type -- a type that
585 is identical to the one supplied except that it has an address
586 space attribute attached to it (such as "code" or "data").
588 The space attributes "code" and "data" are for Harvard
589 architectures. The address space attributes are for architectures
590 which have alternately sized pointers or pointers with alternate
594 make_type_with_address_space (struct type *type, int space_flag)
596 int new_flags = ((TYPE_INSTANCE_FLAGS (type)
597 & ~(TYPE_INSTANCE_FLAG_CODE_SPACE
598 | TYPE_INSTANCE_FLAG_DATA_SPACE
599 | TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL))
602 return make_qualified_type (type, new_flags, NULL);
605 /* Make a "c-v" variant of a type -- a type that is identical to the
606 one supplied except that it may have const or volatile attributes
607 CNST is a flag for setting the const attribute
608 VOLTL is a flag for setting the volatile attribute
609 TYPE is the base type whose variant we are creating.
611 If TYPEPTR and *TYPEPTR are non-zero, then *TYPEPTR points to
612 storage to hold the new qualified type; *TYPEPTR and TYPE must be
613 in the same objfile. Otherwise, allocate fresh memory for the new
614 type whereever TYPE lives. If TYPEPTR is non-zero, set it to the
615 new type we construct. */
618 make_cv_type (int cnst, int voltl,
620 struct type **typeptr)
622 struct type *ntype; /* New type */
624 int new_flags = (TYPE_INSTANCE_FLAGS (type)
625 & ~(TYPE_INSTANCE_FLAG_CONST
626 | TYPE_INSTANCE_FLAG_VOLATILE));
629 new_flags |= TYPE_INSTANCE_FLAG_CONST;
632 new_flags |= TYPE_INSTANCE_FLAG_VOLATILE;
634 if (typeptr && *typeptr != NULL)
636 /* TYPE and *TYPEPTR must be in the same objfile. We can't have
637 a C-V variant chain that threads across objfiles: if one
638 objfile gets freed, then the other has a broken C-V chain.
640 This code used to try to copy over the main type from TYPE to
641 *TYPEPTR if they were in different objfiles, but that's
642 wrong, too: TYPE may have a field list or member function
643 lists, which refer to types of their own, etc. etc. The
644 whole shebang would need to be copied over recursively; you
645 can't have inter-objfile pointers. The only thing to do is
646 to leave stub types as stub types, and look them up afresh by
647 name each time you encounter them. */
648 gdb_assert (TYPE_OBJFILE (*typeptr) == TYPE_OBJFILE (type));
651 ntype = make_qualified_type (type, new_flags,
652 typeptr ? *typeptr : NULL);
660 /* Replace the contents of ntype with the type *type. This changes the
661 contents, rather than the pointer for TYPE_MAIN_TYPE (ntype); thus
662 the changes are propogated to all types in the TYPE_CHAIN.
664 In order to build recursive types, it's inevitable that we'll need
665 to update types in place --- but this sort of indiscriminate
666 smashing is ugly, and needs to be replaced with something more
667 controlled. TYPE_MAIN_TYPE is a step in this direction; it's not
668 clear if more steps are needed. */
671 replace_type (struct type *ntype, struct type *type)
675 /* These two types had better be in the same objfile. Otherwise,
676 the assignment of one type's main type structure to the other
677 will produce a type with references to objects (names; field
678 lists; etc.) allocated on an objfile other than its own. */
679 gdb_assert (TYPE_OBJFILE (ntype) == TYPE_OBJFILE (ntype));
681 *TYPE_MAIN_TYPE (ntype) = *TYPE_MAIN_TYPE (type);
683 /* The type length is not a part of the main type. Update it for
684 each type on the variant chain. */
688 /* Assert that this element of the chain has no address-class bits
689 set in its flags. Such type variants might have type lengths
690 which are supposed to be different from the non-address-class
691 variants. This assertion shouldn't ever be triggered because
692 symbol readers which do construct address-class variants don't
693 call replace_type(). */
694 gdb_assert (TYPE_ADDRESS_CLASS_ALL (chain) == 0);
696 TYPE_LENGTH (chain) = TYPE_LENGTH (type);
697 chain = TYPE_CHAIN (chain);
699 while (ntype != chain);
701 /* Assert that the two types have equivalent instance qualifiers.
702 This should be true for at least all of our debug readers. */
703 gdb_assert (TYPE_INSTANCE_FLAGS (ntype) == TYPE_INSTANCE_FLAGS (type));
706 /* Implement direct support for MEMBER_TYPE in GNU C++.
707 May need to construct such a type if this is the first use.
708 The TYPE is the type of the member. The DOMAIN is the type
709 of the aggregate that the member belongs to. */
712 lookup_memberptr_type (struct type *type, struct type *domain)
716 mtype = alloc_type_copy (type);
717 smash_to_memberptr_type (mtype, domain, type);
721 /* Return a pointer-to-method type, for a method of type TO_TYPE. */
724 lookup_methodptr_type (struct type *to_type)
728 mtype = alloc_type_copy (to_type);
729 smash_to_methodptr_type (mtype, to_type);
733 /* Allocate a stub method whose return type is TYPE. This apparently
734 happens for speed of symbol reading, since parsing out the
735 arguments to the method is cpu-intensive, the way we are doing it.
736 So, we will fill in arguments later. This always returns a fresh
740 allocate_stub_method (struct type *type)
744 mtype = alloc_type_copy (type);
745 TYPE_CODE (mtype) = TYPE_CODE_METHOD;
746 TYPE_LENGTH (mtype) = 1;
747 TYPE_STUB (mtype) = 1;
748 TYPE_TARGET_TYPE (mtype) = type;
749 /* _DOMAIN_TYPE (mtype) = unknown yet */
753 /* Create a range type using either a blank type supplied in
754 RESULT_TYPE, or creating a new type, inheriting the objfile from
757 Indices will be of type INDEX_TYPE, and will range from LOW_BOUND
758 to HIGH_BOUND, inclusive.
760 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
761 sure it is TYPE_CODE_UNDEF before we bash it into a range type? */
764 create_range_type (struct type *result_type, struct type *index_type,
765 LONGEST low_bound, LONGEST high_bound)
767 if (result_type == NULL)
768 result_type = alloc_type_copy (index_type);
769 TYPE_CODE (result_type) = TYPE_CODE_RANGE;
770 TYPE_TARGET_TYPE (result_type) = index_type;
771 if (TYPE_STUB (index_type))
772 TYPE_TARGET_STUB (result_type) = 1;
774 TYPE_LENGTH (result_type) = TYPE_LENGTH (check_typedef (index_type));
775 TYPE_RANGE_DATA (result_type) = (struct range_bounds *)
776 TYPE_ZALLOC (result_type, sizeof (struct range_bounds));
777 TYPE_LOW_BOUND (result_type) = low_bound;
778 TYPE_HIGH_BOUND (result_type) = high_bound;
781 TYPE_UNSIGNED (result_type) = 1;
786 /* Set *LOWP and *HIGHP to the lower and upper bounds of discrete type
787 TYPE. Return 1 if type is a range type, 0 if it is discrete (and
788 bounds will fit in LONGEST), or -1 otherwise. */
791 get_discrete_bounds (struct type *type, LONGEST *lowp, LONGEST *highp)
793 CHECK_TYPEDEF (type);
794 switch (TYPE_CODE (type))
796 case TYPE_CODE_RANGE:
797 *lowp = TYPE_LOW_BOUND (type);
798 *highp = TYPE_HIGH_BOUND (type);
801 if (TYPE_NFIELDS (type) > 0)
803 /* The enums may not be sorted by value, so search all
807 *lowp = *highp = TYPE_FIELD_ENUMVAL (type, 0);
808 for (i = 0; i < TYPE_NFIELDS (type); i++)
810 if (TYPE_FIELD_ENUMVAL (type, i) < *lowp)
811 *lowp = TYPE_FIELD_ENUMVAL (type, i);
812 if (TYPE_FIELD_ENUMVAL (type, i) > *highp)
813 *highp = TYPE_FIELD_ENUMVAL (type, i);
816 /* Set unsigned indicator if warranted. */
819 TYPE_UNSIGNED (type) = 1;
833 if (TYPE_LENGTH (type) > sizeof (LONGEST)) /* Too big */
835 if (!TYPE_UNSIGNED (type))
837 *lowp = -(1 << (TYPE_LENGTH (type) * TARGET_CHAR_BIT - 1));
841 /* ... fall through for unsigned ints ... */
844 /* This round-about calculation is to avoid shifting by
845 TYPE_LENGTH (type) * TARGET_CHAR_BIT, which will not work
846 if TYPE_LENGTH (type) == sizeof (LONGEST). */
847 *highp = 1 << (TYPE_LENGTH (type) * TARGET_CHAR_BIT - 1);
848 *highp = (*highp - 1) | *highp;
855 /* Assuming TYPE is a simple, non-empty array type, compute its upper
856 and lower bound. Save the low bound into LOW_BOUND if not NULL.
857 Save the high bound into HIGH_BOUND if not NULL.
859 Return 1 if the operation was successful. Return zero otherwise,
860 in which case the values of LOW_BOUND and HIGH_BOUNDS are unmodified.
862 We now simply use get_discrete_bounds call to get the values
863 of the low and high bounds.
864 get_discrete_bounds can return three values:
865 1, meaning that index is a range,
866 0, meaning that index is a discrete type,
867 or -1 for failure. */
870 get_array_bounds (struct type *type, LONGEST *low_bound, LONGEST *high_bound)
872 struct type *index = TYPE_INDEX_TYPE (type);
880 res = get_discrete_bounds (index, &low, &high);
884 /* Check if the array bounds are undefined. */
886 && ((low_bound && TYPE_ARRAY_LOWER_BOUND_IS_UNDEFINED (type))
887 || (high_bound && TYPE_ARRAY_UPPER_BOUND_IS_UNDEFINED (type))))
899 /* Create an array type using either a blank type supplied in
900 RESULT_TYPE, or creating a new type, inheriting the objfile from
903 Elements will be of type ELEMENT_TYPE, the indices will be of type
906 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
907 sure it is TYPE_CODE_UNDEF before we bash it into an array
911 create_array_type (struct type *result_type,
912 struct type *element_type,
913 struct type *range_type)
915 LONGEST low_bound, high_bound;
917 if (result_type == NULL)
918 result_type = alloc_type_copy (range_type);
920 TYPE_CODE (result_type) = TYPE_CODE_ARRAY;
921 TYPE_TARGET_TYPE (result_type) = element_type;
922 if (get_discrete_bounds (range_type, &low_bound, &high_bound) < 0)
923 low_bound = high_bound = 0;
924 CHECK_TYPEDEF (element_type);
925 /* Be careful when setting the array length. Ada arrays can be
926 empty arrays with the high_bound being smaller than the low_bound.
927 In such cases, the array length should be zero. */
928 if (high_bound < low_bound)
929 TYPE_LENGTH (result_type) = 0;
931 TYPE_LENGTH (result_type) =
932 TYPE_LENGTH (element_type) * (high_bound - low_bound + 1);
933 TYPE_NFIELDS (result_type) = 1;
934 TYPE_FIELDS (result_type) =
935 (struct field *) TYPE_ZALLOC (result_type, sizeof (struct field));
936 TYPE_INDEX_TYPE (result_type) = range_type;
937 TYPE_VPTR_FIELDNO (result_type) = -1;
939 /* TYPE_FLAG_TARGET_STUB will take care of zero length arrays. */
940 if (TYPE_LENGTH (result_type) == 0)
941 TYPE_TARGET_STUB (result_type) = 1;
947 lookup_array_range_type (struct type *element_type,
948 int low_bound, int high_bound)
950 struct gdbarch *gdbarch = get_type_arch (element_type);
951 struct type *index_type = builtin_type (gdbarch)->builtin_int;
952 struct type *range_type
953 = create_range_type (NULL, index_type, low_bound, high_bound);
955 return create_array_type (NULL, element_type, range_type);
958 /* Create a string type using either a blank type supplied in
959 RESULT_TYPE, or creating a new type. String types are similar
960 enough to array of char types that we can use create_array_type to
961 build the basic type and then bash it into a string type.
963 For fixed length strings, the range type contains 0 as the lower
964 bound and the length of the string minus one as the upper bound.
966 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
967 sure it is TYPE_CODE_UNDEF before we bash it into a string
971 create_string_type (struct type *result_type,
972 struct type *string_char_type,
973 struct type *range_type)
975 result_type = create_array_type (result_type,
978 TYPE_CODE (result_type) = TYPE_CODE_STRING;
983 lookup_string_range_type (struct type *string_char_type,
984 int low_bound, int high_bound)
986 struct type *result_type;
988 result_type = lookup_array_range_type (string_char_type,
989 low_bound, high_bound);
990 TYPE_CODE (result_type) = TYPE_CODE_STRING;
995 create_set_type (struct type *result_type, struct type *domain_type)
997 if (result_type == NULL)
998 result_type = alloc_type_copy (domain_type);
1000 TYPE_CODE (result_type) = TYPE_CODE_SET;
1001 TYPE_NFIELDS (result_type) = 1;
1002 TYPE_FIELDS (result_type) = TYPE_ZALLOC (result_type, sizeof (struct field));
1004 if (!TYPE_STUB (domain_type))
1006 LONGEST low_bound, high_bound, bit_length;
1008 if (get_discrete_bounds (domain_type, &low_bound, &high_bound) < 0)
1009 low_bound = high_bound = 0;
1010 bit_length = high_bound - low_bound + 1;
1011 TYPE_LENGTH (result_type)
1012 = (bit_length + TARGET_CHAR_BIT - 1) / TARGET_CHAR_BIT;
1014 TYPE_UNSIGNED (result_type) = 1;
1016 TYPE_FIELD_TYPE (result_type, 0) = domain_type;
1021 /* Convert ARRAY_TYPE to a vector type. This may modify ARRAY_TYPE
1022 and any array types nested inside it. */
1025 make_vector_type (struct type *array_type)
1027 struct type *inner_array, *elt_type;
1030 /* Find the innermost array type, in case the array is
1031 multi-dimensional. */
1032 inner_array = array_type;
1033 while (TYPE_CODE (TYPE_TARGET_TYPE (inner_array)) == TYPE_CODE_ARRAY)
1034 inner_array = TYPE_TARGET_TYPE (inner_array);
1036 elt_type = TYPE_TARGET_TYPE (inner_array);
1037 if (TYPE_CODE (elt_type) == TYPE_CODE_INT)
1039 flags = TYPE_INSTANCE_FLAGS (elt_type) | TYPE_INSTANCE_FLAG_NOTTEXT;
1040 elt_type = make_qualified_type (elt_type, flags, NULL);
1041 TYPE_TARGET_TYPE (inner_array) = elt_type;
1044 TYPE_VECTOR (array_type) = 1;
1048 init_vector_type (struct type *elt_type, int n)
1050 struct type *array_type;
1052 array_type = lookup_array_range_type (elt_type, 0, n - 1);
1053 make_vector_type (array_type);
1057 /* Smash TYPE to be a type of pointers to members of DOMAIN with type
1058 TO_TYPE. A member pointer is a wierd thing -- it amounts to a
1059 typed offset into a struct, e.g. "an int at offset 8". A MEMBER
1060 TYPE doesn't include the offset (that's the value of the MEMBER
1061 itself), but does include the structure type into which it points
1064 When "smashing" the type, we preserve the objfile that the old type
1065 pointed to, since we aren't changing where the type is actually
1069 smash_to_memberptr_type (struct type *type, struct type *domain,
1070 struct type *to_type)
1073 TYPE_TARGET_TYPE (type) = to_type;
1074 TYPE_DOMAIN_TYPE (type) = domain;
1075 /* Assume that a data member pointer is the same size as a normal
1078 = gdbarch_ptr_bit (get_type_arch (to_type)) / TARGET_CHAR_BIT;
1079 TYPE_CODE (type) = TYPE_CODE_MEMBERPTR;
1082 /* Smash TYPE to be a type of pointer to methods type TO_TYPE.
1084 When "smashing" the type, we preserve the objfile that the old type
1085 pointed to, since we aren't changing where the type is actually
1089 smash_to_methodptr_type (struct type *type, struct type *to_type)
1092 TYPE_TARGET_TYPE (type) = to_type;
1093 TYPE_DOMAIN_TYPE (type) = TYPE_DOMAIN_TYPE (to_type);
1094 TYPE_LENGTH (type) = cplus_method_ptr_size (to_type);
1095 TYPE_CODE (type) = TYPE_CODE_METHODPTR;
1098 /* Smash TYPE to be a type of method of DOMAIN with type TO_TYPE.
1099 METHOD just means `function that gets an extra "this" argument'.
1101 When "smashing" the type, we preserve the objfile that the old type
1102 pointed to, since we aren't changing where the type is actually
1106 smash_to_method_type (struct type *type, struct type *domain,
1107 struct type *to_type, struct field *args,
1108 int nargs, int varargs)
1111 TYPE_TARGET_TYPE (type) = to_type;
1112 TYPE_DOMAIN_TYPE (type) = domain;
1113 TYPE_FIELDS (type) = args;
1114 TYPE_NFIELDS (type) = nargs;
1116 TYPE_VARARGS (type) = 1;
1117 TYPE_LENGTH (type) = 1; /* In practice, this is never needed. */
1118 TYPE_CODE (type) = TYPE_CODE_METHOD;
1121 /* Return a typename for a struct/union/enum type without "struct ",
1122 "union ", or "enum ". If the type has a NULL name, return NULL. */
1125 type_name_no_tag (const struct type *type)
1127 if (TYPE_TAG_NAME (type) != NULL)
1128 return TYPE_TAG_NAME (type);
1130 /* Is there code which expects this to return the name if there is
1131 no tag name? My guess is that this is mainly used for C++ in
1132 cases where the two will always be the same. */
1133 return TYPE_NAME (type);
1136 /* A wrapper of type_name_no_tag which calls error if the type is anonymous.
1137 Since GCC PR debug/47510 DWARF provides associated information to detect the
1138 anonymous class linkage name from its typedef.
1140 Parameter TYPE should not yet have CHECK_TYPEDEF applied, this function will
1144 type_name_no_tag_or_error (struct type *type)
1146 struct type *saved_type = type;
1148 struct objfile *objfile;
1150 CHECK_TYPEDEF (type);
1152 name = type_name_no_tag (type);
1156 name = type_name_no_tag (saved_type);
1157 objfile = TYPE_OBJFILE (saved_type);
1158 error (_("Invalid anonymous type %s [in module %s], GCC PR debug/47510 bug?"),
1159 name ? name : "<anonymous>", objfile ? objfile->name : "<arch>");
1162 /* Lookup a typedef or primitive type named NAME, visible in lexical
1163 block BLOCK. If NOERR is nonzero, return zero if NAME is not
1164 suitably defined. */
1167 lookup_typename (const struct language_defn *language,
1168 struct gdbarch *gdbarch, const char *name,
1169 const struct block *block, int noerr)
1174 sym = lookup_symbol (name, block, VAR_DOMAIN, 0);
1175 if (sym != NULL && SYMBOL_CLASS (sym) == LOC_TYPEDEF)
1176 return SYMBOL_TYPE (sym);
1178 type = language_lookup_primitive_type_by_name (language, gdbarch, name);
1184 error (_("No type named %s."), name);
1188 lookup_unsigned_typename (const struct language_defn *language,
1189 struct gdbarch *gdbarch, const char *name)
1191 char *uns = alloca (strlen (name) + 10);
1193 strcpy (uns, "unsigned ");
1194 strcpy (uns + 9, name);
1195 return lookup_typename (language, gdbarch, uns, (struct block *) NULL, 0);
1199 lookup_signed_typename (const struct language_defn *language,
1200 struct gdbarch *gdbarch, const char *name)
1203 char *uns = alloca (strlen (name) + 8);
1205 strcpy (uns, "signed ");
1206 strcpy (uns + 7, name);
1207 t = lookup_typename (language, gdbarch, uns, (struct block *) NULL, 1);
1208 /* If we don't find "signed FOO" just try again with plain "FOO". */
1211 return lookup_typename (language, gdbarch, name, (struct block *) NULL, 0);
1214 /* Lookup a structure type named "struct NAME",
1215 visible in lexical block BLOCK. */
1218 lookup_struct (const char *name, struct block *block)
1222 sym = lookup_symbol (name, block, STRUCT_DOMAIN, 0);
1226 error (_("No struct type named %s."), name);
1228 if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_STRUCT)
1230 error (_("This context has class, union or enum %s, not a struct."),
1233 return (SYMBOL_TYPE (sym));
1236 /* Lookup a union type named "union NAME",
1237 visible in lexical block BLOCK. */
1240 lookup_union (const char *name, struct block *block)
1245 sym = lookup_symbol (name, block, STRUCT_DOMAIN, 0);
1248 error (_("No union type named %s."), name);
1250 t = SYMBOL_TYPE (sym);
1252 if (TYPE_CODE (t) == TYPE_CODE_UNION)
1255 /* If we get here, it's not a union. */
1256 error (_("This context has class, struct or enum %s, not a union."),
1260 /* Lookup an enum type named "enum NAME",
1261 visible in lexical block BLOCK. */
1264 lookup_enum (const char *name, struct block *block)
1268 sym = lookup_symbol (name, block, STRUCT_DOMAIN, 0);
1271 error (_("No enum type named %s."), name);
1273 if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_ENUM)
1275 error (_("This context has class, struct or union %s, not an enum."),
1278 return (SYMBOL_TYPE (sym));
1281 /* Lookup a template type named "template NAME<TYPE>",
1282 visible in lexical block BLOCK. */
1285 lookup_template_type (char *name, struct type *type,
1286 struct block *block)
1289 char *nam = (char *)
1290 alloca (strlen (name) + strlen (TYPE_NAME (type)) + 4);
1294 strcat (nam, TYPE_NAME (type));
1295 strcat (nam, " >"); /* FIXME, extra space still introduced in gcc? */
1297 sym = lookup_symbol (nam, block, VAR_DOMAIN, 0);
1301 error (_("No template type named %s."), name);
1303 if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_STRUCT)
1305 error (_("This context has class, union or enum %s, not a struct."),
1308 return (SYMBOL_TYPE (sym));
1311 /* Given a type TYPE, lookup the type of the component of type named
1314 TYPE can be either a struct or union, or a pointer or reference to
1315 a struct or union. If it is a pointer or reference, its target
1316 type is automatically used. Thus '.' and '->' are interchangable,
1317 as specified for the definitions of the expression element types
1318 STRUCTOP_STRUCT and STRUCTOP_PTR.
1320 If NOERR is nonzero, return zero if NAME is not suitably defined.
1321 If NAME is the name of a baseclass type, return that type. */
1324 lookup_struct_elt_type (struct type *type, char *name, int noerr)
1331 CHECK_TYPEDEF (type);
1332 if (TYPE_CODE (type) != TYPE_CODE_PTR
1333 && TYPE_CODE (type) != TYPE_CODE_REF)
1335 type = TYPE_TARGET_TYPE (type);
1338 if (TYPE_CODE (type) != TYPE_CODE_STRUCT
1339 && TYPE_CODE (type) != TYPE_CODE_UNION)
1341 typename = type_to_string (type);
1342 make_cleanup (xfree, typename);
1343 error (_("Type %s is not a structure or union type."), typename);
1347 /* FIXME: This change put in by Michael seems incorrect for the case
1348 where the structure tag name is the same as the member name.
1349 I.e. when doing "ptype bell->bar" for "struct foo { int bar; int
1350 foo; } bell;" Disabled by fnf. */
1354 typename = type_name_no_tag (type);
1355 if (typename != NULL && strcmp (typename, name) == 0)
1360 for (i = TYPE_NFIELDS (type) - 1; i >= TYPE_N_BASECLASSES (type); i--)
1362 const char *t_field_name = TYPE_FIELD_NAME (type, i);
1364 if (t_field_name && (strcmp_iw (t_field_name, name) == 0))
1366 return TYPE_FIELD_TYPE (type, i);
1368 else if (!t_field_name || *t_field_name == '\0')
1370 struct type *subtype
1371 = lookup_struct_elt_type (TYPE_FIELD_TYPE (type, i), name, 1);
1373 if (subtype != NULL)
1378 /* OK, it's not in this class. Recursively check the baseclasses. */
1379 for (i = TYPE_N_BASECLASSES (type) - 1; i >= 0; i--)
1383 t = lookup_struct_elt_type (TYPE_BASECLASS (type, i), name, 1);
1395 typename = type_to_string (type);
1396 make_cleanup (xfree, typename);
1397 error (_("Type %s has no component named %s."), typename, name);
1400 /* Lookup the vptr basetype/fieldno values for TYPE.
1401 If found store vptr_basetype in *BASETYPEP if non-NULL, and return
1402 vptr_fieldno. Also, if found and basetype is from the same objfile,
1404 If not found, return -1 and ignore BASETYPEP.
1405 Callers should be aware that in some cases (for example,
1406 the type or one of its baseclasses is a stub type and we are
1407 debugging a .o file, or the compiler uses DWARF-2 and is not GCC),
1408 this function will not be able to find the
1409 virtual function table pointer, and vptr_fieldno will remain -1 and
1410 vptr_basetype will remain NULL or incomplete. */
1413 get_vptr_fieldno (struct type *type, struct type **basetypep)
1415 CHECK_TYPEDEF (type);
1417 if (TYPE_VPTR_FIELDNO (type) < 0)
1421 /* We must start at zero in case the first (and only) baseclass
1422 is virtual (and hence we cannot share the table pointer). */
1423 for (i = 0; i < TYPE_N_BASECLASSES (type); i++)
1425 struct type *baseclass = check_typedef (TYPE_BASECLASS (type, i));
1427 struct type *basetype;
1429 fieldno = get_vptr_fieldno (baseclass, &basetype);
1432 /* If the type comes from a different objfile we can't cache
1433 it, it may have a different lifetime. PR 2384 */
1434 if (TYPE_OBJFILE (type) == TYPE_OBJFILE (basetype))
1436 TYPE_VPTR_FIELDNO (type) = fieldno;
1437 TYPE_VPTR_BASETYPE (type) = basetype;
1440 *basetypep = basetype;
1451 *basetypep = TYPE_VPTR_BASETYPE (type);
1452 return TYPE_VPTR_FIELDNO (type);
1457 stub_noname_complaint (void)
1459 complaint (&symfile_complaints, _("stub type has NULL name"));
1462 /* Find the real type of TYPE. This function returns the real type,
1463 after removing all layers of typedefs, and completing opaque or stub
1464 types. Completion changes the TYPE argument, but stripping of
1467 Instance flags (e.g. const/volatile) are preserved as typedefs are
1468 stripped. If necessary a new qualified form of the underlying type
1471 NOTE: This will return a typedef if TYPE_TARGET_TYPE for the typedef has
1472 not been computed and we're either in the middle of reading symbols, or
1473 there was no name for the typedef in the debug info.
1475 NOTE: Lookup of opaque types can throw errors for invalid symbol files.
1476 QUITs in the symbol reading code can also throw.
1477 Thus this function can throw an exception.
1479 If TYPE is a TYPE_CODE_TYPEDEF, its length is updated to the length of
1482 If this is a stubbed struct (i.e. declared as struct foo *), see if
1483 we can find a full definition in some other file. If so, copy this
1484 definition, so we can use it in future. There used to be a comment
1485 (but not any code) that if we don't find a full definition, we'd
1486 set a flag so we don't spend time in the future checking the same
1487 type. That would be a mistake, though--we might load in more
1488 symbols which contain a full definition for the type. */
1491 check_typedef (struct type *type)
1493 struct type *orig_type = type;
1494 /* While we're removing typedefs, we don't want to lose qualifiers.
1495 E.g., const/volatile. */
1496 int instance_flags = TYPE_INSTANCE_FLAGS (type);
1500 while (TYPE_CODE (type) == TYPE_CODE_TYPEDEF)
1502 if (!TYPE_TARGET_TYPE (type))
1507 /* It is dangerous to call lookup_symbol if we are currently
1508 reading a symtab. Infinite recursion is one danger. */
1509 if (currently_reading_symtab)
1510 return make_qualified_type (type, instance_flags, NULL);
1512 name = type_name_no_tag (type);
1513 /* FIXME: shouldn't we separately check the TYPE_NAME and
1514 the TYPE_TAG_NAME, and look in STRUCT_DOMAIN and/or
1515 VAR_DOMAIN as appropriate? (this code was written before
1516 TYPE_NAME and TYPE_TAG_NAME were separate). */
1519 stub_noname_complaint ();
1520 return make_qualified_type (type, instance_flags, NULL);
1522 sym = lookup_symbol (name, 0, STRUCT_DOMAIN, 0);
1524 TYPE_TARGET_TYPE (type) = SYMBOL_TYPE (sym);
1525 else /* TYPE_CODE_UNDEF */
1526 TYPE_TARGET_TYPE (type) = alloc_type_arch (get_type_arch (type));
1528 type = TYPE_TARGET_TYPE (type);
1530 /* Preserve the instance flags as we traverse down the typedef chain.
1532 Handling address spaces/classes is nasty, what do we do if there's a
1534 E.g., what if an outer typedef marks the type as class_1 and an inner
1535 typedef marks the type as class_2?
1536 This is the wrong place to do such error checking. We leave it to
1537 the code that created the typedef in the first place to flag the
1538 error. We just pick the outer address space (akin to letting the
1539 outer cast in a chain of casting win), instead of assuming
1540 "it can't happen". */
1542 const int ALL_SPACES = (TYPE_INSTANCE_FLAG_CODE_SPACE
1543 | TYPE_INSTANCE_FLAG_DATA_SPACE);
1544 const int ALL_CLASSES = TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL;
1545 int new_instance_flags = TYPE_INSTANCE_FLAGS (type);
1547 /* Treat code vs data spaces and address classes separately. */
1548 if ((instance_flags & ALL_SPACES) != 0)
1549 new_instance_flags &= ~ALL_SPACES;
1550 if ((instance_flags & ALL_CLASSES) != 0)
1551 new_instance_flags &= ~ALL_CLASSES;
1553 instance_flags |= new_instance_flags;
1557 /* If this is a struct/class/union with no fields, then check
1558 whether a full definition exists somewhere else. This is for
1559 systems where a type definition with no fields is issued for such
1560 types, instead of identifying them as stub types in the first
1563 if (TYPE_IS_OPAQUE (type)
1564 && opaque_type_resolution
1565 && !currently_reading_symtab)
1567 const char *name = type_name_no_tag (type);
1568 struct type *newtype;
1572 stub_noname_complaint ();
1573 return make_qualified_type (type, instance_flags, NULL);
1575 newtype = lookup_transparent_type (name);
1579 /* If the resolved type and the stub are in the same
1580 objfile, then replace the stub type with the real deal.
1581 But if they're in separate objfiles, leave the stub
1582 alone; we'll just look up the transparent type every time
1583 we call check_typedef. We can't create pointers between
1584 types allocated to different objfiles, since they may
1585 have different lifetimes. Trying to copy NEWTYPE over to
1586 TYPE's objfile is pointless, too, since you'll have to
1587 move over any other types NEWTYPE refers to, which could
1588 be an unbounded amount of stuff. */
1589 if (TYPE_OBJFILE (newtype) == TYPE_OBJFILE (type))
1590 type = make_qualified_type (newtype,
1591 TYPE_INSTANCE_FLAGS (type),
1597 /* Otherwise, rely on the stub flag being set for opaque/stubbed
1599 else if (TYPE_STUB (type) && !currently_reading_symtab)
1601 const char *name = type_name_no_tag (type);
1602 /* FIXME: shouldn't we separately check the TYPE_NAME and the
1603 TYPE_TAG_NAME, and look in STRUCT_DOMAIN and/or VAR_DOMAIN
1604 as appropriate? (this code was written before TYPE_NAME and
1605 TYPE_TAG_NAME were separate). */
1610 stub_noname_complaint ();
1611 return make_qualified_type (type, instance_flags, NULL);
1613 sym = lookup_symbol (name, 0, STRUCT_DOMAIN, 0);
1616 /* Same as above for opaque types, we can replace the stub
1617 with the complete type only if they are in the same
1619 if (TYPE_OBJFILE (SYMBOL_TYPE(sym)) == TYPE_OBJFILE (type))
1620 type = make_qualified_type (SYMBOL_TYPE (sym),
1621 TYPE_INSTANCE_FLAGS (type),
1624 type = SYMBOL_TYPE (sym);
1628 if (TYPE_TARGET_STUB (type))
1630 struct type *range_type;
1631 struct type *target_type = check_typedef (TYPE_TARGET_TYPE (type));
1633 if (TYPE_STUB (target_type) || TYPE_TARGET_STUB (target_type))
1635 /* Nothing we can do. */
1637 else if (TYPE_CODE (type) == TYPE_CODE_ARRAY
1638 && TYPE_NFIELDS (type) == 1
1639 && (TYPE_CODE (range_type = TYPE_INDEX_TYPE (type))
1640 == TYPE_CODE_RANGE))
1642 /* Now recompute the length of the array type, based on its
1643 number of elements and the target type's length.
1644 Watch out for Ada null Ada arrays where the high bound
1645 is smaller than the low bound. */
1646 const LONGEST low_bound = TYPE_LOW_BOUND (range_type);
1647 const LONGEST high_bound = TYPE_HIGH_BOUND (range_type);
1650 if (high_bound < low_bound)
1654 /* For now, we conservatively take the array length to be 0
1655 if its length exceeds UINT_MAX. The code below assumes
1656 that for x < 0, (ULONGEST) x == -x + ULONGEST_MAX + 1,
1657 which is technically not guaranteed by C, but is usually true
1658 (because it would be true if x were unsigned with its
1659 high-order bit on). It uses the fact that
1660 high_bound-low_bound is always representable in
1661 ULONGEST and that if high_bound-low_bound+1 overflows,
1662 it overflows to 0. We must change these tests if we
1663 decide to increase the representation of TYPE_LENGTH
1664 from unsigned int to ULONGEST. */
1665 ULONGEST ulow = low_bound, uhigh = high_bound;
1666 ULONGEST tlen = TYPE_LENGTH (target_type);
1668 len = tlen * (uhigh - ulow + 1);
1669 if (tlen == 0 || (len / tlen - 1 + ulow) != uhigh
1673 TYPE_LENGTH (type) = len;
1674 TYPE_TARGET_STUB (type) = 0;
1676 else if (TYPE_CODE (type) == TYPE_CODE_RANGE)
1678 TYPE_LENGTH (type) = TYPE_LENGTH (target_type);
1679 TYPE_TARGET_STUB (type) = 0;
1683 type = make_qualified_type (type, instance_flags, NULL);
1685 /* Cache TYPE_LENGTH for future use. */
1686 TYPE_LENGTH (orig_type) = TYPE_LENGTH (type);
1691 /* Parse a type expression in the string [P..P+LENGTH). If an error
1692 occurs, silently return a void type. */
1694 static struct type *
1695 safe_parse_type (struct gdbarch *gdbarch, char *p, int length)
1697 struct ui_file *saved_gdb_stderr;
1698 struct type *type = NULL; /* Initialize to keep gcc happy. */
1699 volatile struct gdb_exception except;
1701 /* Suppress error messages. */
1702 saved_gdb_stderr = gdb_stderr;
1703 gdb_stderr = ui_file_new ();
1705 /* Call parse_and_eval_type() without fear of longjmp()s. */
1706 TRY_CATCH (except, RETURN_MASK_ERROR)
1708 type = parse_and_eval_type (p, length);
1711 if (except.reason < 0)
1712 type = builtin_type (gdbarch)->builtin_void;
1714 /* Stop suppressing error messages. */
1715 ui_file_delete (gdb_stderr);
1716 gdb_stderr = saved_gdb_stderr;
1721 /* Ugly hack to convert method stubs into method types.
1723 He ain't kiddin'. This demangles the name of the method into a
1724 string including argument types, parses out each argument type,
1725 generates a string casting a zero to that type, evaluates the
1726 string, and stuffs the resulting type into an argtype vector!!!
1727 Then it knows the type of the whole function (including argument
1728 types for overloading), which info used to be in the stab's but was
1729 removed to hack back the space required for them. */
1732 check_stub_method (struct type *type, int method_id, int signature_id)
1734 struct gdbarch *gdbarch = get_type_arch (type);
1736 char *mangled_name = gdb_mangle_name (type, method_id, signature_id);
1737 char *demangled_name = cplus_demangle (mangled_name,
1738 DMGL_PARAMS | DMGL_ANSI);
1739 char *argtypetext, *p;
1740 int depth = 0, argcount = 1;
1741 struct field *argtypes;
1744 /* Make sure we got back a function string that we can use. */
1746 p = strchr (demangled_name, '(');
1750 if (demangled_name == NULL || p == NULL)
1751 error (_("Internal: Cannot demangle mangled name `%s'."),
1754 /* Now, read in the parameters that define this type. */
1759 if (*p == '(' || *p == '<')
1763 else if (*p == ')' || *p == '>')
1767 else if (*p == ',' && depth == 0)
1775 /* If we read one argument and it was ``void'', don't count it. */
1776 if (strncmp (argtypetext, "(void)", 6) == 0)
1779 /* We need one extra slot, for the THIS pointer. */
1781 argtypes = (struct field *)
1782 TYPE_ALLOC (type, (argcount + 1) * sizeof (struct field));
1785 /* Add THIS pointer for non-static methods. */
1786 f = TYPE_FN_FIELDLIST1 (type, method_id);
1787 if (TYPE_FN_FIELD_STATIC_P (f, signature_id))
1791 argtypes[0].type = lookup_pointer_type (type);
1795 if (*p != ')') /* () means no args, skip while. */
1800 if (depth <= 0 && (*p == ',' || *p == ')'))
1802 /* Avoid parsing of ellipsis, they will be handled below.
1803 Also avoid ``void'' as above. */
1804 if (strncmp (argtypetext, "...", p - argtypetext) != 0
1805 && strncmp (argtypetext, "void", p - argtypetext) != 0)
1807 argtypes[argcount].type =
1808 safe_parse_type (gdbarch, argtypetext, p - argtypetext);
1811 argtypetext = p + 1;
1814 if (*p == '(' || *p == '<')
1818 else if (*p == ')' || *p == '>')
1827 TYPE_FN_FIELD_PHYSNAME (f, signature_id) = mangled_name;
1829 /* Now update the old "stub" type into a real type. */
1830 mtype = TYPE_FN_FIELD_TYPE (f, signature_id);
1831 TYPE_DOMAIN_TYPE (mtype) = type;
1832 TYPE_FIELDS (mtype) = argtypes;
1833 TYPE_NFIELDS (mtype) = argcount;
1834 TYPE_STUB (mtype) = 0;
1835 TYPE_FN_FIELD_STUB (f, signature_id) = 0;
1837 TYPE_VARARGS (mtype) = 1;
1839 xfree (demangled_name);
1842 /* This is the external interface to check_stub_method, above. This
1843 function unstubs all of the signatures for TYPE's METHOD_ID method
1844 name. After calling this function TYPE_FN_FIELD_STUB will be
1845 cleared for each signature and TYPE_FN_FIELDLIST_NAME will be
1848 This function unfortunately can not die until stabs do. */
1851 check_stub_method_group (struct type *type, int method_id)
1853 int len = TYPE_FN_FIELDLIST_LENGTH (type, method_id);
1854 struct fn_field *f = TYPE_FN_FIELDLIST1 (type, method_id);
1855 int j, found_stub = 0;
1857 for (j = 0; j < len; j++)
1858 if (TYPE_FN_FIELD_STUB (f, j))
1861 check_stub_method (type, method_id, j);
1864 /* GNU v3 methods with incorrect names were corrected when we read
1865 in type information, because it was cheaper to do it then. The
1866 only GNU v2 methods with incorrect method names are operators and
1867 destructors; destructors were also corrected when we read in type
1870 Therefore the only thing we need to handle here are v2 operator
1872 if (found_stub && strncmp (TYPE_FN_FIELD_PHYSNAME (f, 0), "_Z", 2) != 0)
1875 char dem_opname[256];
1877 ret = cplus_demangle_opname (TYPE_FN_FIELDLIST_NAME (type,
1879 dem_opname, DMGL_ANSI);
1881 ret = cplus_demangle_opname (TYPE_FN_FIELDLIST_NAME (type,
1885 TYPE_FN_FIELDLIST_NAME (type, method_id) = xstrdup (dem_opname);
1889 /* Ensure it is in .rodata (if available) by workarounding GCC PR 44690. */
1890 const struct cplus_struct_type cplus_struct_default = { };
1893 allocate_cplus_struct_type (struct type *type)
1895 if (HAVE_CPLUS_STRUCT (type))
1896 /* Structure was already allocated. Nothing more to do. */
1899 TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_CPLUS_STUFF;
1900 TYPE_RAW_CPLUS_SPECIFIC (type) = (struct cplus_struct_type *)
1901 TYPE_ALLOC (type, sizeof (struct cplus_struct_type));
1902 *(TYPE_RAW_CPLUS_SPECIFIC (type)) = cplus_struct_default;
1905 const struct gnat_aux_type gnat_aux_default =
1908 /* Set the TYPE's type-specific kind to TYPE_SPECIFIC_GNAT_STUFF,
1909 and allocate the associated gnat-specific data. The gnat-specific
1910 data is also initialized to gnat_aux_default. */
1913 allocate_gnat_aux_type (struct type *type)
1915 TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_GNAT_STUFF;
1916 TYPE_GNAT_SPECIFIC (type) = (struct gnat_aux_type *)
1917 TYPE_ALLOC (type, sizeof (struct gnat_aux_type));
1918 *(TYPE_GNAT_SPECIFIC (type)) = gnat_aux_default;
1921 /* Helper function to initialize the standard scalar types.
1923 If NAME is non-NULL, then we make a copy of the string pointed
1924 to by name in the objfile_obstack for that objfile, and initialize
1925 the type name to that copy. There are places (mipsread.c in particular),
1926 where init_type is called with a NULL value for NAME). */
1929 init_type (enum type_code code, int length, int flags,
1930 char *name, struct objfile *objfile)
1934 type = alloc_type (objfile);
1935 TYPE_CODE (type) = code;
1936 TYPE_LENGTH (type) = length;
1938 gdb_assert (!(flags & (TYPE_FLAG_MIN - 1)));
1939 if (flags & TYPE_FLAG_UNSIGNED)
1940 TYPE_UNSIGNED (type) = 1;
1941 if (flags & TYPE_FLAG_NOSIGN)
1942 TYPE_NOSIGN (type) = 1;
1943 if (flags & TYPE_FLAG_STUB)
1944 TYPE_STUB (type) = 1;
1945 if (flags & TYPE_FLAG_TARGET_STUB)
1946 TYPE_TARGET_STUB (type) = 1;
1947 if (flags & TYPE_FLAG_STATIC)
1948 TYPE_STATIC (type) = 1;
1949 if (flags & TYPE_FLAG_PROTOTYPED)
1950 TYPE_PROTOTYPED (type) = 1;
1951 if (flags & TYPE_FLAG_INCOMPLETE)
1952 TYPE_INCOMPLETE (type) = 1;
1953 if (flags & TYPE_FLAG_VARARGS)
1954 TYPE_VARARGS (type) = 1;
1955 if (flags & TYPE_FLAG_VECTOR)
1956 TYPE_VECTOR (type) = 1;
1957 if (flags & TYPE_FLAG_STUB_SUPPORTED)
1958 TYPE_STUB_SUPPORTED (type) = 1;
1959 if (flags & TYPE_FLAG_FIXED_INSTANCE)
1960 TYPE_FIXED_INSTANCE (type) = 1;
1961 if (flags & TYPE_FLAG_GNU_IFUNC)
1962 TYPE_GNU_IFUNC (type) = 1;
1965 TYPE_NAME (type) = obsavestring (name, strlen (name),
1966 &objfile->objfile_obstack);
1970 if (name && strcmp (name, "char") == 0)
1971 TYPE_NOSIGN (type) = 1;
1975 case TYPE_CODE_STRUCT:
1976 case TYPE_CODE_UNION:
1977 case TYPE_CODE_NAMESPACE:
1978 INIT_CPLUS_SPECIFIC (type);
1981 TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_FLOATFORMAT;
1983 case TYPE_CODE_FUNC:
1984 INIT_FUNC_SPECIFIC (type);
1990 /* Queries on types. */
1993 can_dereference (struct type *t)
1995 /* FIXME: Should we return true for references as well as
2000 && TYPE_CODE (t) == TYPE_CODE_PTR
2001 && TYPE_CODE (TYPE_TARGET_TYPE (t)) != TYPE_CODE_VOID);
2005 is_integral_type (struct type *t)
2010 && ((TYPE_CODE (t) == TYPE_CODE_INT)
2011 || (TYPE_CODE (t) == TYPE_CODE_ENUM)
2012 || (TYPE_CODE (t) == TYPE_CODE_FLAGS)
2013 || (TYPE_CODE (t) == TYPE_CODE_CHAR)
2014 || (TYPE_CODE (t) == TYPE_CODE_RANGE)
2015 || (TYPE_CODE (t) == TYPE_CODE_BOOL)));
2018 /* Return true if TYPE is scalar. */
2021 is_scalar_type (struct type *type)
2023 CHECK_TYPEDEF (type);
2025 switch (TYPE_CODE (type))
2027 case TYPE_CODE_ARRAY:
2028 case TYPE_CODE_STRUCT:
2029 case TYPE_CODE_UNION:
2031 case TYPE_CODE_STRING:
2032 case TYPE_CODE_BITSTRING:
2039 /* Return true if T is scalar, or a composite type which in practice has
2040 the memory layout of a scalar type. E.g., an array or struct with only
2041 one scalar element inside it, or a union with only scalar elements. */
2044 is_scalar_type_recursive (struct type *t)
2048 if (is_scalar_type (t))
2050 /* Are we dealing with an array or string of known dimensions? */
2051 else if ((TYPE_CODE (t) == TYPE_CODE_ARRAY
2052 || TYPE_CODE (t) == TYPE_CODE_STRING) && TYPE_NFIELDS (t) == 1
2053 && TYPE_CODE (TYPE_INDEX_TYPE (t)) == TYPE_CODE_RANGE)
2055 LONGEST low_bound, high_bound;
2056 struct type *elt_type = check_typedef (TYPE_TARGET_TYPE (t));
2058 get_discrete_bounds (TYPE_INDEX_TYPE (t), &low_bound, &high_bound);
2060 return high_bound == low_bound && is_scalar_type_recursive (elt_type);
2062 /* Are we dealing with a struct with one element? */
2063 else if (TYPE_CODE (t) == TYPE_CODE_STRUCT && TYPE_NFIELDS (t) == 1)
2064 return is_scalar_type_recursive (TYPE_FIELD_TYPE (t, 0));
2065 else if (TYPE_CODE (t) == TYPE_CODE_UNION)
2067 int i, n = TYPE_NFIELDS (t);
2069 /* If all elements of the union are scalar, then the union is scalar. */
2070 for (i = 0; i < n; i++)
2071 if (!is_scalar_type_recursive (TYPE_FIELD_TYPE (t, i)))
2080 /* A helper function which returns true if types A and B represent the
2081 "same" class type. This is true if the types have the same main
2082 type, or the same name. */
2085 class_types_same_p (const struct type *a, const struct type *b)
2087 return (TYPE_MAIN_TYPE (a) == TYPE_MAIN_TYPE (b)
2088 || (TYPE_NAME (a) && TYPE_NAME (b)
2089 && !strcmp (TYPE_NAME (a), TYPE_NAME (b))));
2092 /* If BASE is an ancestor of DCLASS return the distance between them.
2093 otherwise return -1;
2097 class B: public A {};
2098 class C: public B {};
2101 distance_to_ancestor (A, A, 0) = 0
2102 distance_to_ancestor (A, B, 0) = 1
2103 distance_to_ancestor (A, C, 0) = 2
2104 distance_to_ancestor (A, D, 0) = 3
2106 If PUBLIC is 1 then only public ancestors are considered,
2107 and the function returns the distance only if BASE is a public ancestor
2111 distance_to_ancestor (A, D, 1) = -1. */
2114 distance_to_ancestor (struct type *base, struct type *dclass, int public)
2119 CHECK_TYPEDEF (base);
2120 CHECK_TYPEDEF (dclass);
2122 if (class_types_same_p (base, dclass))
2125 for (i = 0; i < TYPE_N_BASECLASSES (dclass); i++)
2127 if (public && ! BASETYPE_VIA_PUBLIC (dclass, i))
2130 d = distance_to_ancestor (base, TYPE_BASECLASS (dclass, i), public);
2138 /* Check whether BASE is an ancestor or base class or DCLASS
2139 Return 1 if so, and 0 if not.
2140 Note: If BASE and DCLASS are of the same type, this function
2141 will return 1. So for some class A, is_ancestor (A, A) will
2145 is_ancestor (struct type *base, struct type *dclass)
2147 return distance_to_ancestor (base, dclass, 0) >= 0;
2150 /* Like is_ancestor, but only returns true when BASE is a public
2151 ancestor of DCLASS. */
2154 is_public_ancestor (struct type *base, struct type *dclass)
2156 return distance_to_ancestor (base, dclass, 1) >= 0;
2159 /* A helper function for is_unique_ancestor. */
2162 is_unique_ancestor_worker (struct type *base, struct type *dclass,
2164 const gdb_byte *valaddr, int embedded_offset,
2165 CORE_ADDR address, struct value *val)
2169 CHECK_TYPEDEF (base);
2170 CHECK_TYPEDEF (dclass);
2172 for (i = 0; i < TYPE_N_BASECLASSES (dclass) && count < 2; ++i)
2177 iter = check_typedef (TYPE_BASECLASS (dclass, i));
2179 this_offset = baseclass_offset (dclass, i, valaddr, embedded_offset,
2182 if (class_types_same_p (base, iter))
2184 /* If this is the first subclass, set *OFFSET and set count
2185 to 1. Otherwise, if this is at the same offset as
2186 previous instances, do nothing. Otherwise, increment
2190 *offset = this_offset;
2193 else if (this_offset == *offset)
2201 count += is_unique_ancestor_worker (base, iter, offset,
2203 embedded_offset + this_offset,
2210 /* Like is_ancestor, but only returns true if BASE is a unique base
2211 class of the type of VAL. */
2214 is_unique_ancestor (struct type *base, struct value *val)
2218 return is_unique_ancestor_worker (base, value_type (val), &offset,
2219 value_contents_for_printing (val),
2220 value_embedded_offset (val),
2221 value_address (val), val) == 1;
2225 /* Overload resolution. */
2227 /* Return the sum of the rank of A with the rank of B. */
2230 sum_ranks (struct rank a, struct rank b)
2233 c.rank = a.rank + b.rank;
2234 c.subrank = a.subrank + b.subrank;
2238 /* Compare rank A and B and return:
2240 1 if a is better than b
2241 -1 if b is better than a. */
2244 compare_ranks (struct rank a, struct rank b)
2246 if (a.rank == b.rank)
2248 if (a.subrank == b.subrank)
2250 if (a.subrank < b.subrank)
2252 if (a.subrank > b.subrank)
2256 if (a.rank < b.rank)
2259 /* a.rank > b.rank */
2263 /* Functions for overload resolution begin here. */
2265 /* Compare two badness vectors A and B and return the result.
2266 0 => A and B are identical
2267 1 => A and B are incomparable
2268 2 => A is better than B
2269 3 => A is worse than B */
2272 compare_badness (struct badness_vector *a, struct badness_vector *b)
2276 short found_pos = 0; /* any positives in c? */
2277 short found_neg = 0; /* any negatives in c? */
2279 /* differing lengths => incomparable */
2280 if (a->length != b->length)
2283 /* Subtract b from a */
2284 for (i = 0; i < a->length; i++)
2286 tmp = compare_ranks (b->rank[i], a->rank[i]);
2296 return 1; /* incomparable */
2298 return 3; /* A > B */
2304 return 2; /* A < B */
2306 return 0; /* A == B */
2310 /* Rank a function by comparing its parameter types (PARMS, length
2311 NPARMS), to the types of an argument list (ARGS, length NARGS).
2312 Return a pointer to a badness vector. This has NARGS + 1
2315 struct badness_vector *
2316 rank_function (struct type **parms, int nparms,
2317 struct value **args, int nargs)
2320 struct badness_vector *bv;
2321 int min_len = nparms < nargs ? nparms : nargs;
2323 bv = xmalloc (sizeof (struct badness_vector));
2324 bv->length = nargs + 1; /* add 1 for the length-match rank. */
2325 bv->rank = xmalloc ((nargs + 1) * sizeof (int));
2327 /* First compare the lengths of the supplied lists.
2328 If there is a mismatch, set it to a high value. */
2330 /* pai/1997-06-03 FIXME: when we have debug info about default
2331 arguments and ellipsis parameter lists, we should consider those
2332 and rank the length-match more finely. */
2334 LENGTH_MATCH (bv) = (nargs != nparms)
2335 ? LENGTH_MISMATCH_BADNESS
2336 : EXACT_MATCH_BADNESS;
2338 /* Now rank all the parameters of the candidate function. */
2339 for (i = 1; i <= min_len; i++)
2340 bv->rank[i] = rank_one_type (parms[i - 1], value_type (args[i - 1]),
2343 /* If more arguments than parameters, add dummy entries. */
2344 for (i = min_len + 1; i <= nargs; i++)
2345 bv->rank[i] = TOO_FEW_PARAMS_BADNESS;
2350 /* Compare the names of two integer types, assuming that any sign
2351 qualifiers have been checked already. We do it this way because
2352 there may be an "int" in the name of one of the types. */
2355 integer_types_same_name_p (const char *first, const char *second)
2357 int first_p, second_p;
2359 /* If both are shorts, return 1; if neither is a short, keep
2361 first_p = (strstr (first, "short") != NULL);
2362 second_p = (strstr (second, "short") != NULL);
2363 if (first_p && second_p)
2365 if (first_p || second_p)
2368 /* Likewise for long. */
2369 first_p = (strstr (first, "long") != NULL);
2370 second_p = (strstr (second, "long") != NULL);
2371 if (first_p && second_p)
2373 if (first_p || second_p)
2376 /* Likewise for char. */
2377 first_p = (strstr (first, "char") != NULL);
2378 second_p = (strstr (second, "char") != NULL);
2379 if (first_p && second_p)
2381 if (first_p || second_p)
2384 /* They must both be ints. */
2388 /* Compares type A to type B returns 1 if the represent the same type
2392 types_equal (struct type *a, struct type *b)
2394 /* Identical type pointers. */
2395 /* However, this still doesn't catch all cases of same type for b
2396 and a. The reason is that builtin types are different from
2397 the same ones constructed from the object. */
2401 /* Resolve typedefs */
2402 if (TYPE_CODE (a) == TYPE_CODE_TYPEDEF)
2403 a = check_typedef (a);
2404 if (TYPE_CODE (b) == TYPE_CODE_TYPEDEF)
2405 b = check_typedef (b);
2407 /* If after resolving typedefs a and b are not of the same type
2408 code then they are not equal. */
2409 if (TYPE_CODE (a) != TYPE_CODE (b))
2412 /* If a and b are both pointers types or both reference types then
2413 they are equal of the same type iff the objects they refer to are
2414 of the same type. */
2415 if (TYPE_CODE (a) == TYPE_CODE_PTR
2416 || TYPE_CODE (a) == TYPE_CODE_REF)
2417 return types_equal (TYPE_TARGET_TYPE (a),
2418 TYPE_TARGET_TYPE (b));
2420 /* Well, damnit, if the names are exactly the same, I'll say they
2421 are exactly the same. This happens when we generate method
2422 stubs. The types won't point to the same address, but they
2423 really are the same. */
2425 if (TYPE_NAME (a) && TYPE_NAME (b)
2426 && strcmp (TYPE_NAME (a), TYPE_NAME (b)) == 0)
2429 /* Check if identical after resolving typedefs. */
2436 /* Compare one type (PARM) for compatibility with another (ARG).
2437 * PARM is intended to be the parameter type of a function; and
2438 * ARG is the supplied argument's type. This function tests if
2439 * the latter can be converted to the former.
2440 * VALUE is the argument's value or NULL if none (or called recursively)
2442 * Return 0 if they are identical types;
2443 * Otherwise, return an integer which corresponds to how compatible
2444 * PARM is to ARG. The higher the return value, the worse the match.
2445 * Generally the "bad" conversions are all uniformly assigned a 100. */
2448 rank_one_type (struct type *parm, struct type *arg, struct value *value)
2450 struct rank rank = {0,0};
2452 if (types_equal (parm, arg))
2453 return EXACT_MATCH_BADNESS;
2455 /* Resolve typedefs */
2456 if (TYPE_CODE (parm) == TYPE_CODE_TYPEDEF)
2457 parm = check_typedef (parm);
2458 if (TYPE_CODE (arg) == TYPE_CODE_TYPEDEF)
2459 arg = check_typedef (arg);
2461 /* See through references, since we can almost make non-references
2463 if (TYPE_CODE (arg) == TYPE_CODE_REF)
2464 return (sum_ranks (rank_one_type (parm, TYPE_TARGET_TYPE (arg), NULL),
2465 REFERENCE_CONVERSION_BADNESS));
2466 if (TYPE_CODE (parm) == TYPE_CODE_REF)
2467 return (sum_ranks (rank_one_type (TYPE_TARGET_TYPE (parm), arg, NULL),
2468 REFERENCE_CONVERSION_BADNESS));
2470 /* Debugging only. */
2471 fprintf_filtered (gdb_stderr,
2472 "------ Arg is %s [%d], parm is %s [%d]\n",
2473 TYPE_NAME (arg), TYPE_CODE (arg),
2474 TYPE_NAME (parm), TYPE_CODE (parm));
2476 /* x -> y means arg of type x being supplied for parameter of type y. */
2478 switch (TYPE_CODE (parm))
2481 switch (TYPE_CODE (arg))
2485 /* Allowed pointer conversions are:
2486 (a) pointer to void-pointer conversion. */
2487 if (TYPE_CODE (TYPE_TARGET_TYPE (parm)) == TYPE_CODE_VOID)
2488 return VOID_PTR_CONVERSION_BADNESS;
2490 /* (b) pointer to ancestor-pointer conversion. */
2491 rank.subrank = distance_to_ancestor (TYPE_TARGET_TYPE (parm),
2492 TYPE_TARGET_TYPE (arg),
2494 if (rank.subrank >= 0)
2495 return sum_ranks (BASE_PTR_CONVERSION_BADNESS, rank);
2497 return INCOMPATIBLE_TYPE_BADNESS;
2498 case TYPE_CODE_ARRAY:
2499 if (types_equal (TYPE_TARGET_TYPE (parm),
2500 TYPE_TARGET_TYPE (arg)))
2501 return EXACT_MATCH_BADNESS;
2502 return INCOMPATIBLE_TYPE_BADNESS;
2503 case TYPE_CODE_FUNC:
2504 return rank_one_type (TYPE_TARGET_TYPE (parm), arg, NULL);
2506 if (value != NULL && TYPE_CODE (value_type (value)) == TYPE_CODE_INT
2507 && value_as_long (value) == 0)
2509 /* Null pointer conversion: allow it to be cast to a pointer.
2510 [4.10.1 of C++ standard draft n3290] */
2511 return NULL_POINTER_CONVERSION_BADNESS;
2514 case TYPE_CODE_ENUM:
2515 case TYPE_CODE_FLAGS:
2516 case TYPE_CODE_CHAR:
2517 case TYPE_CODE_RANGE:
2518 case TYPE_CODE_BOOL:
2520 return INCOMPATIBLE_TYPE_BADNESS;
2522 case TYPE_CODE_ARRAY:
2523 switch (TYPE_CODE (arg))
2526 case TYPE_CODE_ARRAY:
2527 return rank_one_type (TYPE_TARGET_TYPE (parm),
2528 TYPE_TARGET_TYPE (arg), NULL);
2530 return INCOMPATIBLE_TYPE_BADNESS;
2532 case TYPE_CODE_FUNC:
2533 switch (TYPE_CODE (arg))
2535 case TYPE_CODE_PTR: /* funcptr -> func */
2536 return rank_one_type (parm, TYPE_TARGET_TYPE (arg), NULL);
2538 return INCOMPATIBLE_TYPE_BADNESS;
2541 switch (TYPE_CODE (arg))
2544 if (TYPE_LENGTH (arg) == TYPE_LENGTH (parm))
2546 /* Deal with signed, unsigned, and plain chars and
2547 signed and unsigned ints. */
2548 if (TYPE_NOSIGN (parm))
2550 /* This case only for character types. */
2551 if (TYPE_NOSIGN (arg))
2552 return EXACT_MATCH_BADNESS; /* plain char -> plain char */
2553 else /* signed/unsigned char -> plain char */
2554 return INTEGER_CONVERSION_BADNESS;
2556 else if (TYPE_UNSIGNED (parm))
2558 if (TYPE_UNSIGNED (arg))
2560 /* unsigned int -> unsigned int, or
2561 unsigned long -> unsigned long */
2562 if (integer_types_same_name_p (TYPE_NAME (parm),
2564 return EXACT_MATCH_BADNESS;
2565 else if (integer_types_same_name_p (TYPE_NAME (arg),
2567 && integer_types_same_name_p (TYPE_NAME (parm),
2569 /* unsigned int -> unsigned long */
2570 return INTEGER_PROMOTION_BADNESS;
2572 /* unsigned long -> unsigned int */
2573 return INTEGER_CONVERSION_BADNESS;
2577 if (integer_types_same_name_p (TYPE_NAME (arg),
2579 && integer_types_same_name_p (TYPE_NAME (parm),
2581 /* signed long -> unsigned int */
2582 return INTEGER_CONVERSION_BADNESS;
2584 /* signed int/long -> unsigned int/long */
2585 return INTEGER_CONVERSION_BADNESS;
2588 else if (!TYPE_NOSIGN (arg) && !TYPE_UNSIGNED (arg))
2590 if (integer_types_same_name_p (TYPE_NAME (parm),
2592 return EXACT_MATCH_BADNESS;
2593 else if (integer_types_same_name_p (TYPE_NAME (arg),
2595 && integer_types_same_name_p (TYPE_NAME (parm),
2597 return INTEGER_PROMOTION_BADNESS;
2599 return INTEGER_CONVERSION_BADNESS;
2602 return INTEGER_CONVERSION_BADNESS;
2604 else if (TYPE_LENGTH (arg) < TYPE_LENGTH (parm))
2605 return INTEGER_PROMOTION_BADNESS;
2607 return INTEGER_CONVERSION_BADNESS;
2608 case TYPE_CODE_ENUM:
2609 case TYPE_CODE_FLAGS:
2610 case TYPE_CODE_CHAR:
2611 case TYPE_CODE_RANGE:
2612 case TYPE_CODE_BOOL:
2613 return INTEGER_PROMOTION_BADNESS;
2615 return INT_FLOAT_CONVERSION_BADNESS;
2617 return NS_POINTER_CONVERSION_BADNESS;
2619 return INCOMPATIBLE_TYPE_BADNESS;
2622 case TYPE_CODE_ENUM:
2623 switch (TYPE_CODE (arg))
2626 case TYPE_CODE_CHAR:
2627 case TYPE_CODE_RANGE:
2628 case TYPE_CODE_BOOL:
2629 case TYPE_CODE_ENUM:
2630 return INTEGER_CONVERSION_BADNESS;
2632 return INT_FLOAT_CONVERSION_BADNESS;
2634 return INCOMPATIBLE_TYPE_BADNESS;
2637 case TYPE_CODE_CHAR:
2638 switch (TYPE_CODE (arg))
2640 case TYPE_CODE_RANGE:
2641 case TYPE_CODE_BOOL:
2642 case TYPE_CODE_ENUM:
2643 return INTEGER_CONVERSION_BADNESS;
2645 return INT_FLOAT_CONVERSION_BADNESS;
2647 if (TYPE_LENGTH (arg) > TYPE_LENGTH (parm))
2648 return INTEGER_CONVERSION_BADNESS;
2649 else if (TYPE_LENGTH (arg) < TYPE_LENGTH (parm))
2650 return INTEGER_PROMOTION_BADNESS;
2651 /* >>> !! else fall through !! <<< */
2652 case TYPE_CODE_CHAR:
2653 /* Deal with signed, unsigned, and plain chars for C++ and
2654 with int cases falling through from previous case. */
2655 if (TYPE_NOSIGN (parm))
2657 if (TYPE_NOSIGN (arg))
2658 return EXACT_MATCH_BADNESS;
2660 return INTEGER_CONVERSION_BADNESS;
2662 else if (TYPE_UNSIGNED (parm))
2664 if (TYPE_UNSIGNED (arg))
2665 return EXACT_MATCH_BADNESS;
2667 return INTEGER_PROMOTION_BADNESS;
2669 else if (!TYPE_NOSIGN (arg) && !TYPE_UNSIGNED (arg))
2670 return EXACT_MATCH_BADNESS;
2672 return INTEGER_CONVERSION_BADNESS;
2674 return INCOMPATIBLE_TYPE_BADNESS;
2677 case TYPE_CODE_RANGE:
2678 switch (TYPE_CODE (arg))
2681 case TYPE_CODE_CHAR:
2682 case TYPE_CODE_RANGE:
2683 case TYPE_CODE_BOOL:
2684 case TYPE_CODE_ENUM:
2685 return INTEGER_CONVERSION_BADNESS;
2687 return INT_FLOAT_CONVERSION_BADNESS;
2689 return INCOMPATIBLE_TYPE_BADNESS;
2692 case TYPE_CODE_BOOL:
2693 switch (TYPE_CODE (arg))
2696 case TYPE_CODE_CHAR:
2697 case TYPE_CODE_RANGE:
2698 case TYPE_CODE_ENUM:
2700 return INCOMPATIBLE_TYPE_BADNESS;
2702 return BOOL_PTR_CONVERSION_BADNESS;
2703 case TYPE_CODE_BOOL:
2704 return EXACT_MATCH_BADNESS;
2706 return INCOMPATIBLE_TYPE_BADNESS;
2710 switch (TYPE_CODE (arg))
2713 if (TYPE_LENGTH (arg) < TYPE_LENGTH (parm))
2714 return FLOAT_PROMOTION_BADNESS;
2715 else if (TYPE_LENGTH (arg) == TYPE_LENGTH (parm))
2716 return EXACT_MATCH_BADNESS;
2718 return FLOAT_CONVERSION_BADNESS;
2720 case TYPE_CODE_BOOL:
2721 case TYPE_CODE_ENUM:
2722 case TYPE_CODE_RANGE:
2723 case TYPE_CODE_CHAR:
2724 return INT_FLOAT_CONVERSION_BADNESS;
2726 return INCOMPATIBLE_TYPE_BADNESS;
2729 case TYPE_CODE_COMPLEX:
2730 switch (TYPE_CODE (arg))
2731 { /* Strictly not needed for C++, but... */
2733 return FLOAT_PROMOTION_BADNESS;
2734 case TYPE_CODE_COMPLEX:
2735 return EXACT_MATCH_BADNESS;
2737 return INCOMPATIBLE_TYPE_BADNESS;
2740 case TYPE_CODE_STRUCT:
2741 /* currently same as TYPE_CODE_CLASS. */
2742 switch (TYPE_CODE (arg))
2744 case TYPE_CODE_STRUCT:
2745 /* Check for derivation */
2746 rank.subrank = distance_to_ancestor (parm, arg, 0);
2747 if (rank.subrank >= 0)
2748 return sum_ranks (BASE_CONVERSION_BADNESS, rank);
2749 /* else fall through */
2751 return INCOMPATIBLE_TYPE_BADNESS;
2754 case TYPE_CODE_UNION:
2755 switch (TYPE_CODE (arg))
2757 case TYPE_CODE_UNION:
2759 return INCOMPATIBLE_TYPE_BADNESS;
2762 case TYPE_CODE_MEMBERPTR:
2763 switch (TYPE_CODE (arg))
2766 return INCOMPATIBLE_TYPE_BADNESS;
2769 case TYPE_CODE_METHOD:
2770 switch (TYPE_CODE (arg))
2774 return INCOMPATIBLE_TYPE_BADNESS;
2778 switch (TYPE_CODE (arg))
2782 return INCOMPATIBLE_TYPE_BADNESS;
2787 switch (TYPE_CODE (arg))
2791 return rank_one_type (TYPE_FIELD_TYPE (parm, 0),
2792 TYPE_FIELD_TYPE (arg, 0), NULL);
2794 return INCOMPATIBLE_TYPE_BADNESS;
2797 case TYPE_CODE_VOID:
2799 return INCOMPATIBLE_TYPE_BADNESS;
2800 } /* switch (TYPE_CODE (arg)) */
2803 /* End of functions for overload resolution. */
2805 /* Routines to pretty-print types. */
2808 print_bit_vector (B_TYPE *bits, int nbits)
2812 for (bitno = 0; bitno < nbits; bitno++)
2814 if ((bitno % 8) == 0)
2816 puts_filtered (" ");
2818 if (B_TST (bits, bitno))
2819 printf_filtered (("1"));
2821 printf_filtered (("0"));
2825 /* Note the first arg should be the "this" pointer, we may not want to
2826 include it since we may get into a infinitely recursive
2830 print_arg_types (struct field *args, int nargs, int spaces)
2836 for (i = 0; i < nargs; i++)
2837 recursive_dump_type (args[i].type, spaces + 2);
2842 field_is_static (struct field *f)
2844 /* "static" fields are the fields whose location is not relative
2845 to the address of the enclosing struct. It would be nice to
2846 have a dedicated flag that would be set for static fields when
2847 the type is being created. But in practice, checking the field
2848 loc_kind should give us an accurate answer. */
2849 return (FIELD_LOC_KIND (*f) == FIELD_LOC_KIND_PHYSNAME
2850 || FIELD_LOC_KIND (*f) == FIELD_LOC_KIND_PHYSADDR);
2854 dump_fn_fieldlists (struct type *type, int spaces)
2860 printfi_filtered (spaces, "fn_fieldlists ");
2861 gdb_print_host_address (TYPE_FN_FIELDLISTS (type), gdb_stdout);
2862 printf_filtered ("\n");
2863 for (method_idx = 0; method_idx < TYPE_NFN_FIELDS (type); method_idx++)
2865 f = TYPE_FN_FIELDLIST1 (type, method_idx);
2866 printfi_filtered (spaces + 2, "[%d] name '%s' (",
2868 TYPE_FN_FIELDLIST_NAME (type, method_idx));
2869 gdb_print_host_address (TYPE_FN_FIELDLIST_NAME (type, method_idx),
2871 printf_filtered (_(") length %d\n"),
2872 TYPE_FN_FIELDLIST_LENGTH (type, method_idx));
2873 for (overload_idx = 0;
2874 overload_idx < TYPE_FN_FIELDLIST_LENGTH (type, method_idx);
2877 printfi_filtered (spaces + 4, "[%d] physname '%s' (",
2879 TYPE_FN_FIELD_PHYSNAME (f, overload_idx));
2880 gdb_print_host_address (TYPE_FN_FIELD_PHYSNAME (f, overload_idx),
2882 printf_filtered (")\n");
2883 printfi_filtered (spaces + 8, "type ");
2884 gdb_print_host_address (TYPE_FN_FIELD_TYPE (f, overload_idx),
2886 printf_filtered ("\n");
2888 recursive_dump_type (TYPE_FN_FIELD_TYPE (f, overload_idx),
2891 printfi_filtered (spaces + 8, "args ");
2892 gdb_print_host_address (TYPE_FN_FIELD_ARGS (f, overload_idx),
2894 printf_filtered ("\n");
2896 print_arg_types (TYPE_FN_FIELD_ARGS (f, overload_idx),
2897 TYPE_NFIELDS (TYPE_FN_FIELD_TYPE (f,
2900 printfi_filtered (spaces + 8, "fcontext ");
2901 gdb_print_host_address (TYPE_FN_FIELD_FCONTEXT (f, overload_idx),
2903 printf_filtered ("\n");
2905 printfi_filtered (spaces + 8, "is_const %d\n",
2906 TYPE_FN_FIELD_CONST (f, overload_idx));
2907 printfi_filtered (spaces + 8, "is_volatile %d\n",
2908 TYPE_FN_FIELD_VOLATILE (f, overload_idx));
2909 printfi_filtered (spaces + 8, "is_private %d\n",
2910 TYPE_FN_FIELD_PRIVATE (f, overload_idx));
2911 printfi_filtered (spaces + 8, "is_protected %d\n",
2912 TYPE_FN_FIELD_PROTECTED (f, overload_idx));
2913 printfi_filtered (spaces + 8, "is_stub %d\n",
2914 TYPE_FN_FIELD_STUB (f, overload_idx));
2915 printfi_filtered (spaces + 8, "voffset %u\n",
2916 TYPE_FN_FIELD_VOFFSET (f, overload_idx));
2922 print_cplus_stuff (struct type *type, int spaces)
2924 printfi_filtered (spaces, "n_baseclasses %d\n",
2925 TYPE_N_BASECLASSES (type));
2926 printfi_filtered (spaces, "nfn_fields %d\n",
2927 TYPE_NFN_FIELDS (type));
2928 if (TYPE_N_BASECLASSES (type) > 0)
2930 printfi_filtered (spaces, "virtual_field_bits (%d bits at *",
2931 TYPE_N_BASECLASSES (type));
2932 gdb_print_host_address (TYPE_FIELD_VIRTUAL_BITS (type),
2934 printf_filtered (")");
2936 print_bit_vector (TYPE_FIELD_VIRTUAL_BITS (type),
2937 TYPE_N_BASECLASSES (type));
2938 puts_filtered ("\n");
2940 if (TYPE_NFIELDS (type) > 0)
2942 if (TYPE_FIELD_PRIVATE_BITS (type) != NULL)
2944 printfi_filtered (spaces,
2945 "private_field_bits (%d bits at *",
2946 TYPE_NFIELDS (type));
2947 gdb_print_host_address (TYPE_FIELD_PRIVATE_BITS (type),
2949 printf_filtered (")");
2950 print_bit_vector (TYPE_FIELD_PRIVATE_BITS (type),
2951 TYPE_NFIELDS (type));
2952 puts_filtered ("\n");
2954 if (TYPE_FIELD_PROTECTED_BITS (type) != NULL)
2956 printfi_filtered (spaces,
2957 "protected_field_bits (%d bits at *",
2958 TYPE_NFIELDS (type));
2959 gdb_print_host_address (TYPE_FIELD_PROTECTED_BITS (type),
2961 printf_filtered (")");
2962 print_bit_vector (TYPE_FIELD_PROTECTED_BITS (type),
2963 TYPE_NFIELDS (type));
2964 puts_filtered ("\n");
2967 if (TYPE_NFN_FIELDS (type) > 0)
2969 dump_fn_fieldlists (type, spaces);
2973 /* Print the contents of the TYPE's type_specific union, assuming that
2974 its type-specific kind is TYPE_SPECIFIC_GNAT_STUFF. */
2977 print_gnat_stuff (struct type *type, int spaces)
2979 struct type *descriptive_type = TYPE_DESCRIPTIVE_TYPE (type);
2981 recursive_dump_type (descriptive_type, spaces + 2);
2984 static struct obstack dont_print_type_obstack;
2987 recursive_dump_type (struct type *type, int spaces)
2992 obstack_begin (&dont_print_type_obstack, 0);
2994 if (TYPE_NFIELDS (type) > 0
2995 || (HAVE_CPLUS_STRUCT (type) && TYPE_NFN_FIELDS (type) > 0))
2997 struct type **first_dont_print
2998 = (struct type **) obstack_base (&dont_print_type_obstack);
3000 int i = (struct type **)
3001 obstack_next_free (&dont_print_type_obstack) - first_dont_print;
3005 if (type == first_dont_print[i])
3007 printfi_filtered (spaces, "type node ");
3008 gdb_print_host_address (type, gdb_stdout);
3009 printf_filtered (_(" <same as already seen type>\n"));
3014 obstack_ptr_grow (&dont_print_type_obstack, type);
3017 printfi_filtered (spaces, "type node ");
3018 gdb_print_host_address (type, gdb_stdout);
3019 printf_filtered ("\n");
3020 printfi_filtered (spaces, "name '%s' (",
3021 TYPE_NAME (type) ? TYPE_NAME (type) : "<NULL>");
3022 gdb_print_host_address (TYPE_NAME (type), gdb_stdout);
3023 printf_filtered (")\n");
3024 printfi_filtered (spaces, "tagname '%s' (",
3025 TYPE_TAG_NAME (type) ? TYPE_TAG_NAME (type) : "<NULL>");
3026 gdb_print_host_address (TYPE_TAG_NAME (type), gdb_stdout);
3027 printf_filtered (")\n");
3028 printfi_filtered (spaces, "code 0x%x ", TYPE_CODE (type));
3029 switch (TYPE_CODE (type))
3031 case TYPE_CODE_UNDEF:
3032 printf_filtered ("(TYPE_CODE_UNDEF)");
3035 printf_filtered ("(TYPE_CODE_PTR)");
3037 case TYPE_CODE_ARRAY:
3038 printf_filtered ("(TYPE_CODE_ARRAY)");
3040 case TYPE_CODE_STRUCT:
3041 printf_filtered ("(TYPE_CODE_STRUCT)");
3043 case TYPE_CODE_UNION:
3044 printf_filtered ("(TYPE_CODE_UNION)");
3046 case TYPE_CODE_ENUM:
3047 printf_filtered ("(TYPE_CODE_ENUM)");
3049 case TYPE_CODE_FLAGS:
3050 printf_filtered ("(TYPE_CODE_FLAGS)");
3052 case TYPE_CODE_FUNC:
3053 printf_filtered ("(TYPE_CODE_FUNC)");
3056 printf_filtered ("(TYPE_CODE_INT)");
3059 printf_filtered ("(TYPE_CODE_FLT)");
3061 case TYPE_CODE_VOID:
3062 printf_filtered ("(TYPE_CODE_VOID)");
3065 printf_filtered ("(TYPE_CODE_SET)");
3067 case TYPE_CODE_RANGE:
3068 printf_filtered ("(TYPE_CODE_RANGE)");
3070 case TYPE_CODE_STRING:
3071 printf_filtered ("(TYPE_CODE_STRING)");
3073 case TYPE_CODE_BITSTRING:
3074 printf_filtered ("(TYPE_CODE_BITSTRING)");
3076 case TYPE_CODE_ERROR:
3077 printf_filtered ("(TYPE_CODE_ERROR)");
3079 case TYPE_CODE_MEMBERPTR:
3080 printf_filtered ("(TYPE_CODE_MEMBERPTR)");
3082 case TYPE_CODE_METHODPTR:
3083 printf_filtered ("(TYPE_CODE_METHODPTR)");
3085 case TYPE_CODE_METHOD:
3086 printf_filtered ("(TYPE_CODE_METHOD)");
3089 printf_filtered ("(TYPE_CODE_REF)");
3091 case TYPE_CODE_CHAR:
3092 printf_filtered ("(TYPE_CODE_CHAR)");
3094 case TYPE_CODE_BOOL:
3095 printf_filtered ("(TYPE_CODE_BOOL)");
3097 case TYPE_CODE_COMPLEX:
3098 printf_filtered ("(TYPE_CODE_COMPLEX)");
3100 case TYPE_CODE_TYPEDEF:
3101 printf_filtered ("(TYPE_CODE_TYPEDEF)");
3103 case TYPE_CODE_NAMESPACE:
3104 printf_filtered ("(TYPE_CODE_NAMESPACE)");
3107 printf_filtered ("(UNKNOWN TYPE CODE)");
3110 puts_filtered ("\n");
3111 printfi_filtered (spaces, "length %d\n", TYPE_LENGTH (type));
3112 if (TYPE_OBJFILE_OWNED (type))
3114 printfi_filtered (spaces, "objfile ");
3115 gdb_print_host_address (TYPE_OWNER (type).objfile, gdb_stdout);
3119 printfi_filtered (spaces, "gdbarch ");
3120 gdb_print_host_address (TYPE_OWNER (type).gdbarch, gdb_stdout);
3122 printf_filtered ("\n");
3123 printfi_filtered (spaces, "target_type ");
3124 gdb_print_host_address (TYPE_TARGET_TYPE (type), gdb_stdout);
3125 printf_filtered ("\n");
3126 if (TYPE_TARGET_TYPE (type) != NULL)
3128 recursive_dump_type (TYPE_TARGET_TYPE (type), spaces + 2);
3130 printfi_filtered (spaces, "pointer_type ");
3131 gdb_print_host_address (TYPE_POINTER_TYPE (type), gdb_stdout);
3132 printf_filtered ("\n");
3133 printfi_filtered (spaces, "reference_type ");
3134 gdb_print_host_address (TYPE_REFERENCE_TYPE (type), gdb_stdout);
3135 printf_filtered ("\n");
3136 printfi_filtered (spaces, "type_chain ");
3137 gdb_print_host_address (TYPE_CHAIN (type), gdb_stdout);
3138 printf_filtered ("\n");
3139 printfi_filtered (spaces, "instance_flags 0x%x",
3140 TYPE_INSTANCE_FLAGS (type));
3141 if (TYPE_CONST (type))
3143 puts_filtered (" TYPE_FLAG_CONST");
3145 if (TYPE_VOLATILE (type))
3147 puts_filtered (" TYPE_FLAG_VOLATILE");
3149 if (TYPE_CODE_SPACE (type))
3151 puts_filtered (" TYPE_FLAG_CODE_SPACE");
3153 if (TYPE_DATA_SPACE (type))
3155 puts_filtered (" TYPE_FLAG_DATA_SPACE");
3157 if (TYPE_ADDRESS_CLASS_1 (type))
3159 puts_filtered (" TYPE_FLAG_ADDRESS_CLASS_1");
3161 if (TYPE_ADDRESS_CLASS_2 (type))
3163 puts_filtered (" TYPE_FLAG_ADDRESS_CLASS_2");
3165 puts_filtered ("\n");
3167 printfi_filtered (spaces, "flags");
3168 if (TYPE_UNSIGNED (type))
3170 puts_filtered (" TYPE_FLAG_UNSIGNED");
3172 if (TYPE_NOSIGN (type))
3174 puts_filtered (" TYPE_FLAG_NOSIGN");
3176 if (TYPE_STUB (type))
3178 puts_filtered (" TYPE_FLAG_STUB");
3180 if (TYPE_TARGET_STUB (type))
3182 puts_filtered (" TYPE_FLAG_TARGET_STUB");
3184 if (TYPE_STATIC (type))
3186 puts_filtered (" TYPE_FLAG_STATIC");
3188 if (TYPE_PROTOTYPED (type))
3190 puts_filtered (" TYPE_FLAG_PROTOTYPED");
3192 if (TYPE_INCOMPLETE (type))
3194 puts_filtered (" TYPE_FLAG_INCOMPLETE");
3196 if (TYPE_VARARGS (type))
3198 puts_filtered (" TYPE_FLAG_VARARGS");
3200 /* This is used for things like AltiVec registers on ppc. Gcc emits
3201 an attribute for the array type, which tells whether or not we
3202 have a vector, instead of a regular array. */
3203 if (TYPE_VECTOR (type))
3205 puts_filtered (" TYPE_FLAG_VECTOR");
3207 if (TYPE_FIXED_INSTANCE (type))
3209 puts_filtered (" TYPE_FIXED_INSTANCE");
3211 if (TYPE_STUB_SUPPORTED (type))
3213 puts_filtered (" TYPE_STUB_SUPPORTED");
3215 if (TYPE_NOTTEXT (type))
3217 puts_filtered (" TYPE_NOTTEXT");
3219 puts_filtered ("\n");
3220 printfi_filtered (spaces, "nfields %d ", TYPE_NFIELDS (type));
3221 gdb_print_host_address (TYPE_FIELDS (type), gdb_stdout);
3222 puts_filtered ("\n");
3223 for (idx = 0; idx < TYPE_NFIELDS (type); idx++)
3225 if (TYPE_CODE (type) == TYPE_CODE_ENUM)
3226 printfi_filtered (spaces + 2,
3227 "[%d] enumval %s type ",
3228 idx, plongest (TYPE_FIELD_ENUMVAL (type, idx)));
3230 printfi_filtered (spaces + 2,
3231 "[%d] bitpos %d bitsize %d type ",
3232 idx, TYPE_FIELD_BITPOS (type, idx),
3233 TYPE_FIELD_BITSIZE (type, idx));
3234 gdb_print_host_address (TYPE_FIELD_TYPE (type, idx), gdb_stdout);
3235 printf_filtered (" name '%s' (",
3236 TYPE_FIELD_NAME (type, idx) != NULL
3237 ? TYPE_FIELD_NAME (type, idx)
3239 gdb_print_host_address (TYPE_FIELD_NAME (type, idx), gdb_stdout);
3240 printf_filtered (")\n");
3241 if (TYPE_FIELD_TYPE (type, idx) != NULL)
3243 recursive_dump_type (TYPE_FIELD_TYPE (type, idx), spaces + 4);
3246 if (TYPE_CODE (type) == TYPE_CODE_RANGE)
3248 printfi_filtered (spaces, "low %s%s high %s%s\n",
3249 plongest (TYPE_LOW_BOUND (type)),
3250 TYPE_LOW_BOUND_UNDEFINED (type) ? " (undefined)" : "",
3251 plongest (TYPE_HIGH_BOUND (type)),
3252 TYPE_HIGH_BOUND_UNDEFINED (type)
3253 ? " (undefined)" : "");
3255 printfi_filtered (spaces, "vptr_basetype ");
3256 gdb_print_host_address (TYPE_VPTR_BASETYPE (type), gdb_stdout);
3257 puts_filtered ("\n");
3258 if (TYPE_VPTR_BASETYPE (type) != NULL)
3260 recursive_dump_type (TYPE_VPTR_BASETYPE (type), spaces + 2);
3262 printfi_filtered (spaces, "vptr_fieldno %d\n",
3263 TYPE_VPTR_FIELDNO (type));
3265 switch (TYPE_SPECIFIC_FIELD (type))
3267 case TYPE_SPECIFIC_CPLUS_STUFF:
3268 printfi_filtered (spaces, "cplus_stuff ");
3269 gdb_print_host_address (TYPE_CPLUS_SPECIFIC (type),
3271 puts_filtered ("\n");
3272 print_cplus_stuff (type, spaces);
3275 case TYPE_SPECIFIC_GNAT_STUFF:
3276 printfi_filtered (spaces, "gnat_stuff ");
3277 gdb_print_host_address (TYPE_GNAT_SPECIFIC (type), gdb_stdout);
3278 puts_filtered ("\n");
3279 print_gnat_stuff (type, spaces);
3282 case TYPE_SPECIFIC_FLOATFORMAT:
3283 printfi_filtered (spaces, "floatformat ");
3284 if (TYPE_FLOATFORMAT (type) == NULL)
3285 puts_filtered ("(null)");
3288 puts_filtered ("{ ");
3289 if (TYPE_FLOATFORMAT (type)[0] == NULL
3290 || TYPE_FLOATFORMAT (type)[0]->name == NULL)
3291 puts_filtered ("(null)");
3293 puts_filtered (TYPE_FLOATFORMAT (type)[0]->name);
3295 puts_filtered (", ");
3296 if (TYPE_FLOATFORMAT (type)[1] == NULL
3297 || TYPE_FLOATFORMAT (type)[1]->name == NULL)
3298 puts_filtered ("(null)");
3300 puts_filtered (TYPE_FLOATFORMAT (type)[1]->name);
3302 puts_filtered (" }");
3304 puts_filtered ("\n");
3307 case TYPE_SPECIFIC_FUNC:
3308 printfi_filtered (spaces, "calling_convention %d\n",
3309 TYPE_CALLING_CONVENTION (type));
3310 /* tail_call_list is not printed. */
3315 obstack_free (&dont_print_type_obstack, NULL);
3318 /* Trivial helpers for the libiberty hash table, for mapping one
3323 struct type *old, *new;
3327 type_pair_hash (const void *item)
3329 const struct type_pair *pair = item;
3331 return htab_hash_pointer (pair->old);
3335 type_pair_eq (const void *item_lhs, const void *item_rhs)
3337 const struct type_pair *lhs = item_lhs, *rhs = item_rhs;
3339 return lhs->old == rhs->old;
3342 /* Allocate the hash table used by copy_type_recursive to walk
3343 types without duplicates. We use OBJFILE's obstack, because
3344 OBJFILE is about to be deleted. */
3347 create_copied_types_hash (struct objfile *objfile)
3349 return htab_create_alloc_ex (1, type_pair_hash, type_pair_eq,
3350 NULL, &objfile->objfile_obstack,
3351 hashtab_obstack_allocate,
3352 dummy_obstack_deallocate);
3355 /* Recursively copy (deep copy) TYPE, if it is associated with
3356 OBJFILE. Return a new type allocated using malloc, a saved type if
3357 we have already visited TYPE (using COPIED_TYPES), or TYPE if it is
3358 not associated with OBJFILE. */
3361 copy_type_recursive (struct objfile *objfile,
3363 htab_t copied_types)
3365 struct type_pair *stored, pair;
3367 struct type *new_type;
3369 if (! TYPE_OBJFILE_OWNED (type))
3372 /* This type shouldn't be pointing to any types in other objfiles;
3373 if it did, the type might disappear unexpectedly. */
3374 gdb_assert (TYPE_OBJFILE (type) == objfile);
3377 slot = htab_find_slot (copied_types, &pair, INSERT);
3379 return ((struct type_pair *) *slot)->new;
3381 new_type = alloc_type_arch (get_type_arch (type));
3383 /* We must add the new type to the hash table immediately, in case
3384 we encounter this type again during a recursive call below. */
3386 = obstack_alloc (&objfile->objfile_obstack, sizeof (struct type_pair));
3388 stored->new = new_type;
3391 /* Copy the common fields of types. For the main type, we simply
3392 copy the entire thing and then update specific fields as needed. */
3393 *TYPE_MAIN_TYPE (new_type) = *TYPE_MAIN_TYPE (type);
3394 TYPE_OBJFILE_OWNED (new_type) = 0;
3395 TYPE_OWNER (new_type).gdbarch = get_type_arch (type);
3397 if (TYPE_NAME (type))
3398 TYPE_NAME (new_type) = xstrdup (TYPE_NAME (type));
3399 if (TYPE_TAG_NAME (type))
3400 TYPE_TAG_NAME (new_type) = xstrdup (TYPE_TAG_NAME (type));
3402 TYPE_INSTANCE_FLAGS (new_type) = TYPE_INSTANCE_FLAGS (type);
3403 TYPE_LENGTH (new_type) = TYPE_LENGTH (type);
3405 /* Copy the fields. */
3406 if (TYPE_NFIELDS (type))
3410 nfields = TYPE_NFIELDS (type);
3411 TYPE_FIELDS (new_type) = XCALLOC (nfields, struct field);
3412 for (i = 0; i < nfields; i++)
3414 TYPE_FIELD_ARTIFICIAL (new_type, i) =
3415 TYPE_FIELD_ARTIFICIAL (type, i);
3416 TYPE_FIELD_BITSIZE (new_type, i) = TYPE_FIELD_BITSIZE (type, i);
3417 if (TYPE_FIELD_TYPE (type, i))
3418 TYPE_FIELD_TYPE (new_type, i)
3419 = copy_type_recursive (objfile, TYPE_FIELD_TYPE (type, i),
3421 if (TYPE_FIELD_NAME (type, i))
3422 TYPE_FIELD_NAME (new_type, i) =
3423 xstrdup (TYPE_FIELD_NAME (type, i));
3424 switch (TYPE_FIELD_LOC_KIND (type, i))
3426 case FIELD_LOC_KIND_BITPOS:
3427 SET_FIELD_BITPOS (TYPE_FIELD (new_type, i),
3428 TYPE_FIELD_BITPOS (type, i));
3430 case FIELD_LOC_KIND_ENUMVAL:
3431 SET_FIELD_ENUMVAL (TYPE_FIELD (new_type, i),
3432 TYPE_FIELD_ENUMVAL (type, i));
3434 case FIELD_LOC_KIND_PHYSADDR:
3435 SET_FIELD_PHYSADDR (TYPE_FIELD (new_type, i),
3436 TYPE_FIELD_STATIC_PHYSADDR (type, i));
3438 case FIELD_LOC_KIND_PHYSNAME:
3439 SET_FIELD_PHYSNAME (TYPE_FIELD (new_type, i),
3440 xstrdup (TYPE_FIELD_STATIC_PHYSNAME (type,
3444 internal_error (__FILE__, __LINE__,
3445 _("Unexpected type field location kind: %d"),
3446 TYPE_FIELD_LOC_KIND (type, i));
3451 /* For range types, copy the bounds information. */
3452 if (TYPE_CODE (type) == TYPE_CODE_RANGE)
3454 TYPE_RANGE_DATA (new_type) = xmalloc (sizeof (struct range_bounds));
3455 *TYPE_RANGE_DATA (new_type) = *TYPE_RANGE_DATA (type);
3458 /* Copy pointers to other types. */
3459 if (TYPE_TARGET_TYPE (type))
3460 TYPE_TARGET_TYPE (new_type) =
3461 copy_type_recursive (objfile,
3462 TYPE_TARGET_TYPE (type),
3464 if (TYPE_VPTR_BASETYPE (type))
3465 TYPE_VPTR_BASETYPE (new_type) =
3466 copy_type_recursive (objfile,
3467 TYPE_VPTR_BASETYPE (type),
3469 /* Maybe copy the type_specific bits.
3471 NOTE drow/2005-12-09: We do not copy the C++-specific bits like
3472 base classes and methods. There's no fundamental reason why we
3473 can't, but at the moment it is not needed. */
3475 if (TYPE_CODE (type) == TYPE_CODE_FLT)
3476 TYPE_FLOATFORMAT (new_type) = TYPE_FLOATFORMAT (type);
3477 else if (TYPE_CODE (type) == TYPE_CODE_STRUCT
3478 || TYPE_CODE (type) == TYPE_CODE_UNION
3479 || TYPE_CODE (type) == TYPE_CODE_NAMESPACE)
3480 INIT_CPLUS_SPECIFIC (new_type);
3485 /* Make a copy of the given TYPE, except that the pointer & reference
3486 types are not preserved.
3488 This function assumes that the given type has an associated objfile.
3489 This objfile is used to allocate the new type. */
3492 copy_type (const struct type *type)
3494 struct type *new_type;
3496 gdb_assert (TYPE_OBJFILE_OWNED (type));
3498 new_type = alloc_type_copy (type);
3499 TYPE_INSTANCE_FLAGS (new_type) = TYPE_INSTANCE_FLAGS (type);
3500 TYPE_LENGTH (new_type) = TYPE_LENGTH (type);
3501 memcpy (TYPE_MAIN_TYPE (new_type), TYPE_MAIN_TYPE (type),
3502 sizeof (struct main_type));
3507 /* Helper functions to initialize architecture-specific types. */
3509 /* Allocate a type structure associated with GDBARCH and set its
3510 CODE, LENGTH, and NAME fields. */
3513 arch_type (struct gdbarch *gdbarch,
3514 enum type_code code, int length, char *name)
3518 type = alloc_type_arch (gdbarch);
3519 TYPE_CODE (type) = code;
3520 TYPE_LENGTH (type) = length;
3523 TYPE_NAME (type) = xstrdup (name);
3528 /* Allocate a TYPE_CODE_INT type structure associated with GDBARCH.
3529 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
3530 the type's TYPE_UNSIGNED flag. NAME is the type name. */
3533 arch_integer_type (struct gdbarch *gdbarch,
3534 int bit, int unsigned_p, char *name)
3538 t = arch_type (gdbarch, TYPE_CODE_INT, bit / TARGET_CHAR_BIT, name);
3540 TYPE_UNSIGNED (t) = 1;
3541 if (name && strcmp (name, "char") == 0)
3542 TYPE_NOSIGN (t) = 1;
3547 /* Allocate a TYPE_CODE_CHAR type structure associated with GDBARCH.
3548 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
3549 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. */
3569 arch_boolean_type (struct gdbarch *gdbarch,
3570 int bit, int unsigned_p, char *name)
3574 t = arch_type (gdbarch, TYPE_CODE_BOOL, bit / TARGET_CHAR_BIT, name);
3576 TYPE_UNSIGNED (t) = 1;
3581 /* Allocate a TYPE_CODE_FLT type structure associated with GDBARCH.
3582 BIT is the type size in bits; if BIT equals -1, the size is
3583 determined by the floatformat. NAME is the type name. Set the
3584 TYPE_FLOATFORMAT from FLOATFORMATS. */
3587 arch_float_type (struct gdbarch *gdbarch,
3588 int bit, char *name, const struct floatformat **floatformats)
3594 gdb_assert (floatformats != NULL);
3595 gdb_assert (floatformats[0] != NULL && floatformats[1] != NULL);
3596 bit = floatformats[0]->totalsize;
3598 gdb_assert (bit >= 0);
3600 t = arch_type (gdbarch, TYPE_CODE_FLT, bit / TARGET_CHAR_BIT, name);
3601 TYPE_FLOATFORMAT (t) = floatformats;
3605 /* Allocate a TYPE_CODE_COMPLEX type structure associated with GDBARCH.
3606 NAME is the type name. TARGET_TYPE is the component float type. */
3609 arch_complex_type (struct gdbarch *gdbarch,
3610 char *name, struct type *target_type)
3614 t = arch_type (gdbarch, TYPE_CODE_COMPLEX,
3615 2 * TYPE_LENGTH (target_type), name);
3616 TYPE_TARGET_TYPE (t) = target_type;
3620 /* Allocate a TYPE_CODE_FLAGS type structure associated with GDBARCH.
3621 NAME is the type name. LENGTH is the size of the flag word in bytes. */
3624 arch_flags_type (struct gdbarch *gdbarch, char *name, int length)
3626 int nfields = length * TARGET_CHAR_BIT;
3629 type = arch_type (gdbarch, TYPE_CODE_FLAGS, length, name);
3630 TYPE_UNSIGNED (type) = 1;
3631 TYPE_NFIELDS (type) = nfields;
3632 TYPE_FIELDS (type) = TYPE_ZALLOC (type, nfields * sizeof (struct field));
3637 /* Add field to TYPE_CODE_FLAGS type TYPE to indicate the bit at
3638 position BITPOS is called NAME. */
3641 append_flags_type_flag (struct type *type, int bitpos, char *name)
3643 gdb_assert (TYPE_CODE (type) == TYPE_CODE_FLAGS);
3644 gdb_assert (bitpos < TYPE_NFIELDS (type));
3645 gdb_assert (bitpos >= 0);
3649 TYPE_FIELD_NAME (type, bitpos) = xstrdup (name);
3650 SET_FIELD_BITPOS (TYPE_FIELD (type, bitpos), bitpos);
3654 /* Don't show this field to the user. */
3655 SET_FIELD_BITPOS (TYPE_FIELD (type, bitpos), -1);
3659 /* Allocate a TYPE_CODE_STRUCT or TYPE_CODE_UNION type structure (as
3660 specified by CODE) associated with GDBARCH. NAME is the type name. */
3663 arch_composite_type (struct gdbarch *gdbarch, char *name, enum type_code code)
3667 gdb_assert (code == TYPE_CODE_STRUCT || code == TYPE_CODE_UNION);
3668 t = arch_type (gdbarch, code, 0, NULL);
3669 TYPE_TAG_NAME (t) = name;
3670 INIT_CPLUS_SPECIFIC (t);
3674 /* Add new field with name NAME and type FIELD to composite type T.
3675 Do not set the field's position or adjust the type's length;
3676 the caller should do so. Return the new field. */
3679 append_composite_type_field_raw (struct type *t, char *name,
3684 TYPE_NFIELDS (t) = TYPE_NFIELDS (t) + 1;
3685 TYPE_FIELDS (t) = xrealloc (TYPE_FIELDS (t),
3686 sizeof (struct field) * TYPE_NFIELDS (t));
3687 f = &(TYPE_FIELDS (t)[TYPE_NFIELDS (t) - 1]);
3688 memset (f, 0, sizeof f[0]);
3689 FIELD_TYPE (f[0]) = field;
3690 FIELD_NAME (f[0]) = name;
3694 /* Add new field with name NAME and type FIELD to composite type T.
3695 ALIGNMENT (if non-zero) specifies the minimum field alignment. */
3698 append_composite_type_field_aligned (struct type *t, char *name,
3699 struct type *field, int alignment)
3701 struct field *f = append_composite_type_field_raw (t, name, field);
3703 if (TYPE_CODE (t) == TYPE_CODE_UNION)
3705 if (TYPE_LENGTH (t) < TYPE_LENGTH (field))
3706 TYPE_LENGTH (t) = TYPE_LENGTH (field);
3708 else if (TYPE_CODE (t) == TYPE_CODE_STRUCT)
3710 TYPE_LENGTH (t) = TYPE_LENGTH (t) + TYPE_LENGTH (field);
3711 if (TYPE_NFIELDS (t) > 1)
3713 SET_FIELD_BITPOS (f[0],
3714 (FIELD_BITPOS (f[-1])
3715 + (TYPE_LENGTH (FIELD_TYPE (f[-1]))
3716 * TARGET_CHAR_BIT)));
3722 alignment *= TARGET_CHAR_BIT;
3723 left = FIELD_BITPOS (f[0]) % alignment;
3727 SET_FIELD_BITPOS (f[0], FIELD_BITPOS (f[0]) + (alignment - left));
3728 TYPE_LENGTH (t) += (alignment - left) / TARGET_CHAR_BIT;
3735 /* Add new field with name NAME and type FIELD to composite type T. */
3738 append_composite_type_field (struct type *t, char *name,
3741 append_composite_type_field_aligned (t, name, field, 0);
3744 static struct gdbarch_data *gdbtypes_data;
3746 const struct builtin_type *
3747 builtin_type (struct gdbarch *gdbarch)
3749 return gdbarch_data (gdbarch, gdbtypes_data);
3753 gdbtypes_post_init (struct gdbarch *gdbarch)
3755 struct builtin_type *builtin_type
3756 = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct builtin_type);
3759 builtin_type->builtin_void
3760 = arch_type (gdbarch, TYPE_CODE_VOID, 1, "void");
3761 builtin_type->builtin_char
3762 = arch_integer_type (gdbarch, TARGET_CHAR_BIT,
3763 !gdbarch_char_signed (gdbarch), "char");
3764 builtin_type->builtin_signed_char
3765 = arch_integer_type (gdbarch, TARGET_CHAR_BIT,
3767 builtin_type->builtin_unsigned_char
3768 = arch_integer_type (gdbarch, TARGET_CHAR_BIT,
3769 1, "unsigned char");
3770 builtin_type->builtin_short
3771 = arch_integer_type (gdbarch, gdbarch_short_bit (gdbarch),
3773 builtin_type->builtin_unsigned_short
3774 = arch_integer_type (gdbarch, gdbarch_short_bit (gdbarch),
3775 1, "unsigned short");
3776 builtin_type->builtin_int
3777 = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch),
3779 builtin_type->builtin_unsigned_int
3780 = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch),
3782 builtin_type->builtin_long
3783 = arch_integer_type (gdbarch, gdbarch_long_bit (gdbarch),
3785 builtin_type->builtin_unsigned_long
3786 = arch_integer_type (gdbarch, gdbarch_long_bit (gdbarch),
3787 1, "unsigned long");
3788 builtin_type->builtin_long_long
3789 = arch_integer_type (gdbarch, gdbarch_long_long_bit (gdbarch),
3791 builtin_type->builtin_unsigned_long_long
3792 = arch_integer_type (gdbarch, gdbarch_long_long_bit (gdbarch),
3793 1, "unsigned long long");
3794 builtin_type->builtin_float
3795 = arch_float_type (gdbarch, gdbarch_float_bit (gdbarch),
3796 "float", gdbarch_float_format (gdbarch));
3797 builtin_type->builtin_double
3798 = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch),
3799 "double", gdbarch_double_format (gdbarch));
3800 builtin_type->builtin_long_double
3801 = arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch),
3802 "long double", gdbarch_long_double_format (gdbarch));
3803 builtin_type->builtin_complex
3804 = arch_complex_type (gdbarch, "complex",
3805 builtin_type->builtin_float);
3806 builtin_type->builtin_double_complex
3807 = arch_complex_type (gdbarch, "double complex",
3808 builtin_type->builtin_double);
3809 builtin_type->builtin_string
3810 = arch_type (gdbarch, TYPE_CODE_STRING, 1, "string");
3811 builtin_type->builtin_bool
3812 = arch_type (gdbarch, TYPE_CODE_BOOL, 1, "bool");
3814 /* The following three are about decimal floating point types, which
3815 are 32-bits, 64-bits and 128-bits respectively. */
3816 builtin_type->builtin_decfloat
3817 = arch_type (gdbarch, TYPE_CODE_DECFLOAT, 32 / 8, "_Decimal32");
3818 builtin_type->builtin_decdouble
3819 = arch_type (gdbarch, TYPE_CODE_DECFLOAT, 64 / 8, "_Decimal64");
3820 builtin_type->builtin_declong
3821 = arch_type (gdbarch, TYPE_CODE_DECFLOAT, 128 / 8, "_Decimal128");
3823 /* "True" character types. */
3824 builtin_type->builtin_true_char
3825 = arch_character_type (gdbarch, TARGET_CHAR_BIT, 0, "true character");
3826 builtin_type->builtin_true_unsigned_char
3827 = arch_character_type (gdbarch, TARGET_CHAR_BIT, 1, "true character");
3829 /* Fixed-size integer types. */
3830 builtin_type->builtin_int0
3831 = arch_integer_type (gdbarch, 0, 0, "int0_t");
3832 builtin_type->builtin_int8
3833 = arch_integer_type (gdbarch, 8, 0, "int8_t");
3834 builtin_type->builtin_uint8
3835 = arch_integer_type (gdbarch, 8, 1, "uint8_t");
3836 builtin_type->builtin_int16
3837 = arch_integer_type (gdbarch, 16, 0, "int16_t");
3838 builtin_type->builtin_uint16
3839 = arch_integer_type (gdbarch, 16, 1, "uint16_t");
3840 builtin_type->builtin_int32
3841 = arch_integer_type (gdbarch, 32, 0, "int32_t");
3842 builtin_type->builtin_uint32
3843 = arch_integer_type (gdbarch, 32, 1, "uint32_t");
3844 builtin_type->builtin_int64
3845 = arch_integer_type (gdbarch, 64, 0, "int64_t");
3846 builtin_type->builtin_uint64
3847 = arch_integer_type (gdbarch, 64, 1, "uint64_t");
3848 builtin_type->builtin_int128
3849 = arch_integer_type (gdbarch, 128, 0, "int128_t");
3850 builtin_type->builtin_uint128
3851 = arch_integer_type (gdbarch, 128, 1, "uint128_t");
3852 TYPE_INSTANCE_FLAGS (builtin_type->builtin_int8) |=
3853 TYPE_INSTANCE_FLAG_NOTTEXT;
3854 TYPE_INSTANCE_FLAGS (builtin_type->builtin_uint8) |=
3855 TYPE_INSTANCE_FLAG_NOTTEXT;
3857 /* Wide character types. */
3858 builtin_type->builtin_char16
3859 = arch_integer_type (gdbarch, 16, 0, "char16_t");
3860 builtin_type->builtin_char32
3861 = arch_integer_type (gdbarch, 32, 0, "char32_t");
3864 /* Default data/code pointer types. */
3865 builtin_type->builtin_data_ptr
3866 = lookup_pointer_type (builtin_type->builtin_void);
3867 builtin_type->builtin_func_ptr
3868 = lookup_pointer_type (lookup_function_type (builtin_type->builtin_void));
3869 builtin_type->builtin_func_func
3870 = lookup_function_type (builtin_type->builtin_func_ptr);
3872 /* This type represents a GDB internal function. */
3873 builtin_type->internal_fn
3874 = arch_type (gdbarch, TYPE_CODE_INTERNAL_FUNCTION, 0,
3875 "<internal function>");
3877 return builtin_type;
3880 /* This set of objfile-based types is intended to be used by symbol
3881 readers as basic types. */
3883 static const struct objfile_data *objfile_type_data;
3885 const struct objfile_type *
3886 objfile_type (struct objfile *objfile)
3888 struct gdbarch *gdbarch;
3889 struct objfile_type *objfile_type
3890 = objfile_data (objfile, objfile_type_data);
3893 return objfile_type;
3895 objfile_type = OBSTACK_CALLOC (&objfile->objfile_obstack,
3896 1, struct objfile_type);
3898 /* Use the objfile architecture to determine basic type properties. */
3899 gdbarch = get_objfile_arch (objfile);
3902 objfile_type->builtin_void
3903 = init_type (TYPE_CODE_VOID, 1,
3907 objfile_type->builtin_char
3908 = init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
3910 | (gdbarch_char_signed (gdbarch) ? 0 : TYPE_FLAG_UNSIGNED)),
3912 objfile_type->builtin_signed_char
3913 = init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
3915 "signed char", objfile);
3916 objfile_type->builtin_unsigned_char
3917 = init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
3919 "unsigned char", objfile);
3920 objfile_type->builtin_short
3921 = init_type (TYPE_CODE_INT,
3922 gdbarch_short_bit (gdbarch) / TARGET_CHAR_BIT,
3923 0, "short", objfile);
3924 objfile_type->builtin_unsigned_short
3925 = init_type (TYPE_CODE_INT,
3926 gdbarch_short_bit (gdbarch) / TARGET_CHAR_BIT,
3927 TYPE_FLAG_UNSIGNED, "unsigned short", objfile);
3928 objfile_type->builtin_int
3929 = init_type (TYPE_CODE_INT,
3930 gdbarch_int_bit (gdbarch) / TARGET_CHAR_BIT,
3932 objfile_type->builtin_unsigned_int
3933 = init_type (TYPE_CODE_INT,
3934 gdbarch_int_bit (gdbarch) / TARGET_CHAR_BIT,
3935 TYPE_FLAG_UNSIGNED, "unsigned int", objfile);
3936 objfile_type->builtin_long
3937 = init_type (TYPE_CODE_INT,
3938 gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT,
3939 0, "long", objfile);
3940 objfile_type->builtin_unsigned_long
3941 = init_type (TYPE_CODE_INT,
3942 gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT,
3943 TYPE_FLAG_UNSIGNED, "unsigned long", objfile);
3944 objfile_type->builtin_long_long
3945 = init_type (TYPE_CODE_INT,
3946 gdbarch_long_long_bit (gdbarch) / TARGET_CHAR_BIT,
3947 0, "long long", objfile);
3948 objfile_type->builtin_unsigned_long_long
3949 = init_type (TYPE_CODE_INT,
3950 gdbarch_long_long_bit (gdbarch) / TARGET_CHAR_BIT,
3951 TYPE_FLAG_UNSIGNED, "unsigned long long", objfile);
3953 objfile_type->builtin_float
3954 = init_type (TYPE_CODE_FLT,
3955 gdbarch_float_bit (gdbarch) / TARGET_CHAR_BIT,
3956 0, "float", objfile);
3957 TYPE_FLOATFORMAT (objfile_type->builtin_float)
3958 = gdbarch_float_format (gdbarch);
3959 objfile_type->builtin_double
3960 = init_type (TYPE_CODE_FLT,
3961 gdbarch_double_bit (gdbarch) / TARGET_CHAR_BIT,
3962 0, "double", objfile);
3963 TYPE_FLOATFORMAT (objfile_type->builtin_double)
3964 = gdbarch_double_format (gdbarch);
3965 objfile_type->builtin_long_double
3966 = init_type (TYPE_CODE_FLT,
3967 gdbarch_long_double_bit (gdbarch) / TARGET_CHAR_BIT,
3968 0, "long double", objfile);
3969 TYPE_FLOATFORMAT (objfile_type->builtin_long_double)
3970 = gdbarch_long_double_format (gdbarch);
3972 /* This type represents a type that was unrecognized in symbol read-in. */
3973 objfile_type->builtin_error
3974 = init_type (TYPE_CODE_ERROR, 0, 0, "<unknown type>", objfile);
3976 /* The following set of types is used for symbols with no
3977 debug information. */
3978 objfile_type->nodebug_text_symbol
3979 = init_type (TYPE_CODE_FUNC, 1, 0,
3980 "<text variable, no debug info>", objfile);
3981 TYPE_TARGET_TYPE (objfile_type->nodebug_text_symbol)
3982 = objfile_type->builtin_int;
3983 objfile_type->nodebug_text_gnu_ifunc_symbol
3984 = init_type (TYPE_CODE_FUNC, 1, TYPE_FLAG_GNU_IFUNC,
3985 "<text gnu-indirect-function variable, no debug info>",
3987 TYPE_TARGET_TYPE (objfile_type->nodebug_text_gnu_ifunc_symbol)
3988 = objfile_type->nodebug_text_symbol;
3989 objfile_type->nodebug_got_plt_symbol
3990 = init_type (TYPE_CODE_PTR, gdbarch_addr_bit (gdbarch) / 8, 0,
3991 "<text from jump slot in .got.plt, no debug info>",
3993 TYPE_TARGET_TYPE (objfile_type->nodebug_got_plt_symbol)
3994 = objfile_type->nodebug_text_symbol;
3995 objfile_type->nodebug_data_symbol
3996 = init_type (TYPE_CODE_INT,
3997 gdbarch_int_bit (gdbarch) / HOST_CHAR_BIT, 0,
3998 "<data variable, no debug info>", objfile);
3999 objfile_type->nodebug_unknown_symbol
4000 = init_type (TYPE_CODE_INT, 1, 0,
4001 "<variable (not text or data), no debug info>", objfile);
4002 objfile_type->nodebug_tls_symbol
4003 = init_type (TYPE_CODE_INT,
4004 gdbarch_int_bit (gdbarch) / HOST_CHAR_BIT, 0,
4005 "<thread local variable, no debug info>", objfile);
4007 /* NOTE: on some targets, addresses and pointers are not necessarily
4008 the same --- for example, on the D10V, pointers are 16 bits long,
4009 but addresses are 32 bits long. See doc/gdbint.texinfo,
4010 ``Pointers Are Not Always Addresses''.
4013 - gdb's `struct type' always describes the target's
4015 - gdb's `struct value' objects should always hold values in
4017 - gdb's CORE_ADDR values are addresses in the unified virtual
4018 address space that the assembler and linker work with. Thus,
4019 since target_read_memory takes a CORE_ADDR as an argument, it
4020 can access any memory on the target, even if the processor has
4021 separate code and data address spaces.
4024 - If v is a value holding a D10V code pointer, its contents are
4025 in target form: a big-endian address left-shifted two bits.
4026 - If p is a D10V pointer type, TYPE_LENGTH (p) == 2, just as
4027 sizeof (void *) == 2 on the target.
4029 In this context, objfile_type->builtin_core_addr is a bit odd:
4030 it's a target type for a value the target will never see. It's
4031 only used to hold the values of (typeless) linker symbols, which
4032 are indeed in the unified virtual address space. */
4034 objfile_type->builtin_core_addr
4035 = init_type (TYPE_CODE_INT,
4036 gdbarch_addr_bit (gdbarch) / 8,
4037 TYPE_FLAG_UNSIGNED, "__CORE_ADDR", objfile);
4039 set_objfile_data (objfile, objfile_type_data, objfile_type);
4040 return objfile_type;
4043 extern initialize_file_ftype _initialize_gdbtypes;
4046 _initialize_gdbtypes (void)
4048 gdbtypes_data = gdbarch_data_register_post_init (gdbtypes_post_init);
4049 objfile_type_data = register_objfile_data ();
4051 add_setshow_zuinteger_cmd ("overload", no_class, &overload_debug,
4052 _("Set debugging of C++ overloading."),
4053 _("Show debugging of C++ overloading."),
4054 _("When enabled, ranking of the "
4055 "functions is displayed."),
4057 show_overload_debug,
4058 &setdebuglist, &showdebuglist);
4060 /* Add user knob for controlling resolution of opaque types. */
4061 add_setshow_boolean_cmd ("opaque-type-resolution", class_support,
4062 &opaque_type_resolution,
4063 _("Set resolution of opaque struct/class/union"
4064 " types (if set before loading symbols)."),
4065 _("Show resolution of opaque struct/class/union"
4066 " types (if set before loading symbols)."),
4068 show_opaque_type_resolution,
4069 &setlist, &showlist);