1 /* Support routines for manipulating internal types for GDB.
3 Copyright (C) 1992-2014 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/>. */
28 #include "expression.h"
33 #include "complaints.h"
37 #include "cp-support.h"
39 #include "dwarf2loc.h"
42 /* Initialize BADNESS constants. */
44 const struct rank LENGTH_MISMATCH_BADNESS
= {100,0};
46 const struct rank TOO_FEW_PARAMS_BADNESS
= {100,0};
47 const struct rank INCOMPATIBLE_TYPE_BADNESS
= {100,0};
49 const struct rank EXACT_MATCH_BADNESS
= {0,0};
51 const struct rank INTEGER_PROMOTION_BADNESS
= {1,0};
52 const struct rank FLOAT_PROMOTION_BADNESS
= {1,0};
53 const struct rank BASE_PTR_CONVERSION_BADNESS
= {1,0};
54 const struct rank INTEGER_CONVERSION_BADNESS
= {2,0};
55 const struct rank FLOAT_CONVERSION_BADNESS
= {2,0};
56 const struct rank INT_FLOAT_CONVERSION_BADNESS
= {2,0};
57 const struct rank VOID_PTR_CONVERSION_BADNESS
= {2,0};
58 const struct rank BOOL_CONVERSION_BADNESS
= {3,0};
59 const struct rank BASE_CONVERSION_BADNESS
= {2,0};
60 const struct rank REFERENCE_CONVERSION_BADNESS
= {2,0};
61 const struct rank NULL_POINTER_CONVERSION_BADNESS
= {2,0};
62 const struct rank NS_POINTER_CONVERSION_BADNESS
= {10,0};
63 const struct rank NS_INTEGER_POINTER_CONVERSION_BADNESS
= {3,0};
65 /* Floatformat pairs. */
66 const struct floatformat
*floatformats_ieee_half
[BFD_ENDIAN_UNKNOWN
] = {
67 &floatformat_ieee_half_big
,
68 &floatformat_ieee_half_little
70 const struct floatformat
*floatformats_ieee_single
[BFD_ENDIAN_UNKNOWN
] = {
71 &floatformat_ieee_single_big
,
72 &floatformat_ieee_single_little
74 const struct floatformat
*floatformats_ieee_double
[BFD_ENDIAN_UNKNOWN
] = {
75 &floatformat_ieee_double_big
,
76 &floatformat_ieee_double_little
78 const struct floatformat
*floatformats_ieee_double_littlebyte_bigword
[BFD_ENDIAN_UNKNOWN
] = {
79 &floatformat_ieee_double_big
,
80 &floatformat_ieee_double_littlebyte_bigword
82 const struct floatformat
*floatformats_i387_ext
[BFD_ENDIAN_UNKNOWN
] = {
83 &floatformat_i387_ext
,
86 const struct floatformat
*floatformats_m68881_ext
[BFD_ENDIAN_UNKNOWN
] = {
87 &floatformat_m68881_ext
,
88 &floatformat_m68881_ext
90 const struct floatformat
*floatformats_arm_ext
[BFD_ENDIAN_UNKNOWN
] = {
91 &floatformat_arm_ext_big
,
92 &floatformat_arm_ext_littlebyte_bigword
94 const struct floatformat
*floatformats_ia64_spill
[BFD_ENDIAN_UNKNOWN
] = {
95 &floatformat_ia64_spill_big
,
96 &floatformat_ia64_spill_little
98 const struct floatformat
*floatformats_ia64_quad
[BFD_ENDIAN_UNKNOWN
] = {
99 &floatformat_ia64_quad_big
,
100 &floatformat_ia64_quad_little
102 const struct floatformat
*floatformats_vax_f
[BFD_ENDIAN_UNKNOWN
] = {
106 const struct floatformat
*floatformats_vax_d
[BFD_ENDIAN_UNKNOWN
] = {
110 const struct floatformat
*floatformats_ibm_long_double
[BFD_ENDIAN_UNKNOWN
] = {
111 &floatformat_ibm_long_double_big
,
112 &floatformat_ibm_long_double_little
115 /* Should opaque types be resolved? */
117 static int opaque_type_resolution
= 1;
119 /* A flag to enable printing of debugging information of C++
122 unsigned int overload_debug
= 0;
124 /* A flag to enable strict type checking. */
126 static int strict_type_checking
= 1;
128 /* A function to show whether opaque types are resolved. */
131 show_opaque_type_resolution (struct ui_file
*file
, int from_tty
,
132 struct cmd_list_element
*c
,
135 fprintf_filtered (file
, _("Resolution of opaque struct/class/union types "
136 "(if set before loading symbols) is %s.\n"),
140 /* A function to show whether C++ overload debugging is enabled. */
143 show_overload_debug (struct ui_file
*file
, int from_tty
,
144 struct cmd_list_element
*c
, const char *value
)
146 fprintf_filtered (file
, _("Debugging of C++ overloading is %s.\n"),
150 /* A function to show the status of strict type checking. */
153 show_strict_type_checking (struct ui_file
*file
, int from_tty
,
154 struct cmd_list_element
*c
, const char *value
)
156 fprintf_filtered (file
, _("Strict type checking is %s.\n"), value
);
160 /* Allocate a new OBJFILE-associated type structure and fill it
161 with some defaults. Space for the type structure is allocated
162 on the objfile's objfile_obstack. */
165 alloc_type (struct objfile
*objfile
)
169 gdb_assert (objfile
!= NULL
);
171 /* Alloc the structure and start off with all fields zeroed. */
172 type
= OBSTACK_ZALLOC (&objfile
->objfile_obstack
, struct type
);
173 TYPE_MAIN_TYPE (type
) = OBSTACK_ZALLOC (&objfile
->objfile_obstack
,
175 OBJSTAT (objfile
, n_types
++);
177 TYPE_OBJFILE_OWNED (type
) = 1;
178 TYPE_OWNER (type
).objfile
= objfile
;
180 /* Initialize the fields that might not be zero. */
182 TYPE_CODE (type
) = TYPE_CODE_UNDEF
;
183 TYPE_VPTR_FIELDNO (type
) = -1;
184 TYPE_CHAIN (type
) = type
; /* Chain back to itself. */
189 /* Allocate a new GDBARCH-associated type structure and fill it
190 with some defaults. Space for the type structure is allocated
194 alloc_type_arch (struct gdbarch
*gdbarch
)
198 gdb_assert (gdbarch
!= NULL
);
200 /* Alloc the structure and start off with all fields zeroed. */
202 type
= XCNEW (struct type
);
203 TYPE_MAIN_TYPE (type
) = XCNEW (struct main_type
);
205 TYPE_OBJFILE_OWNED (type
) = 0;
206 TYPE_OWNER (type
).gdbarch
= gdbarch
;
208 /* Initialize the fields that might not be zero. */
210 TYPE_CODE (type
) = TYPE_CODE_UNDEF
;
211 TYPE_VPTR_FIELDNO (type
) = -1;
212 TYPE_CHAIN (type
) = type
; /* Chain back to itself. */
217 /* If TYPE is objfile-associated, allocate a new type structure
218 associated with the same objfile. If TYPE is gdbarch-associated,
219 allocate a new type structure associated with the same gdbarch. */
222 alloc_type_copy (const struct type
*type
)
224 if (TYPE_OBJFILE_OWNED (type
))
225 return alloc_type (TYPE_OWNER (type
).objfile
);
227 return alloc_type_arch (TYPE_OWNER (type
).gdbarch
);
230 /* If TYPE is gdbarch-associated, return that architecture.
231 If TYPE is objfile-associated, return that objfile's architecture. */
234 get_type_arch (const struct type
*type
)
236 if (TYPE_OBJFILE_OWNED (type
))
237 return get_objfile_arch (TYPE_OWNER (type
).objfile
);
239 return TYPE_OWNER (type
).gdbarch
;
242 /* See gdbtypes.h. */
245 get_target_type (struct type
*type
)
249 type
= TYPE_TARGET_TYPE (type
);
251 type
= check_typedef (type
);
257 /* Alloc a new type instance structure, fill it with some defaults,
258 and point it at OLDTYPE. Allocate the new type instance from the
259 same place as OLDTYPE. */
262 alloc_type_instance (struct type
*oldtype
)
266 /* Allocate the structure. */
268 if (! TYPE_OBJFILE_OWNED (oldtype
))
269 type
= XCNEW (struct type
);
271 type
= OBSTACK_ZALLOC (&TYPE_OBJFILE (oldtype
)->objfile_obstack
,
274 TYPE_MAIN_TYPE (type
) = TYPE_MAIN_TYPE (oldtype
);
276 TYPE_CHAIN (type
) = type
; /* Chain back to itself for now. */
281 /* Clear all remnants of the previous type at TYPE, in preparation for
282 replacing it with something else. Preserve owner information. */
285 smash_type (struct type
*type
)
287 int objfile_owned
= TYPE_OBJFILE_OWNED (type
);
288 union type_owner owner
= TYPE_OWNER (type
);
290 memset (TYPE_MAIN_TYPE (type
), 0, sizeof (struct main_type
));
292 /* Restore owner information. */
293 TYPE_OBJFILE_OWNED (type
) = objfile_owned
;
294 TYPE_OWNER (type
) = owner
;
296 /* For now, delete the rings. */
297 TYPE_CHAIN (type
) = type
;
299 /* For now, leave the pointer/reference types alone. */
302 /* Lookup a pointer to a type TYPE. TYPEPTR, if nonzero, points
303 to a pointer to memory where the pointer type should be stored.
304 If *TYPEPTR is zero, update it to point to the pointer type we return.
305 We allocate new memory if needed. */
308 make_pointer_type (struct type
*type
, struct type
**typeptr
)
310 struct type
*ntype
; /* New type */
313 ntype
= TYPE_POINTER_TYPE (type
);
318 return ntype
; /* Don't care about alloc,
319 and have new type. */
320 else if (*typeptr
== 0)
322 *typeptr
= ntype
; /* Tracking alloc, and have new type. */
327 if (typeptr
== 0 || *typeptr
== 0) /* We'll need to allocate one. */
329 ntype
= alloc_type_copy (type
);
333 else /* We have storage, but need to reset it. */
336 chain
= TYPE_CHAIN (ntype
);
338 TYPE_CHAIN (ntype
) = chain
;
341 TYPE_TARGET_TYPE (ntype
) = type
;
342 TYPE_POINTER_TYPE (type
) = ntype
;
344 /* FIXME! Assumes the machine has only one representation for pointers! */
347 = gdbarch_ptr_bit (get_type_arch (type
)) / TARGET_CHAR_BIT
;
348 TYPE_CODE (ntype
) = TYPE_CODE_PTR
;
350 /* Mark pointers as unsigned. The target converts between pointers
351 and addresses (CORE_ADDRs) using gdbarch_pointer_to_address and
352 gdbarch_address_to_pointer. */
353 TYPE_UNSIGNED (ntype
) = 1;
355 /* Update the length of all the other variants of this type. */
356 chain
= TYPE_CHAIN (ntype
);
357 while (chain
!= ntype
)
359 TYPE_LENGTH (chain
) = TYPE_LENGTH (ntype
);
360 chain
= TYPE_CHAIN (chain
);
366 /* Given a type TYPE, return a type of pointers to that type.
367 May need to construct such a type if this is the first use. */
370 lookup_pointer_type (struct type
*type
)
372 return make_pointer_type (type
, (struct type
**) 0);
375 /* Lookup a C++ `reference' to a type TYPE. TYPEPTR, if nonzero,
376 points to a pointer to memory where the reference type should be
377 stored. If *TYPEPTR is zero, update it to point to the reference
378 type we return. We allocate new memory if needed. */
381 make_reference_type (struct type
*type
, struct type
**typeptr
)
383 struct type
*ntype
; /* New type */
386 ntype
= TYPE_REFERENCE_TYPE (type
);
391 return ntype
; /* Don't care about alloc,
392 and have new type. */
393 else if (*typeptr
== 0)
395 *typeptr
= ntype
; /* Tracking alloc, and have new type. */
400 if (typeptr
== 0 || *typeptr
== 0) /* We'll need to allocate one. */
402 ntype
= alloc_type_copy (type
);
406 else /* We have storage, but need to reset it. */
409 chain
= TYPE_CHAIN (ntype
);
411 TYPE_CHAIN (ntype
) = chain
;
414 TYPE_TARGET_TYPE (ntype
) = type
;
415 TYPE_REFERENCE_TYPE (type
) = ntype
;
417 /* FIXME! Assume the machine has only one representation for
418 references, and that it matches the (only) representation for
421 TYPE_LENGTH (ntype
) =
422 gdbarch_ptr_bit (get_type_arch (type
)) / TARGET_CHAR_BIT
;
423 TYPE_CODE (ntype
) = TYPE_CODE_REF
;
425 if (!TYPE_REFERENCE_TYPE (type
)) /* Remember it, if don't have one. */
426 TYPE_REFERENCE_TYPE (type
) = ntype
;
428 /* Update the length of all the other variants of this type. */
429 chain
= TYPE_CHAIN (ntype
);
430 while (chain
!= ntype
)
432 TYPE_LENGTH (chain
) = TYPE_LENGTH (ntype
);
433 chain
= TYPE_CHAIN (chain
);
439 /* Same as above, but caller doesn't care about memory allocation
443 lookup_reference_type (struct type
*type
)
445 return make_reference_type (type
, (struct type
**) 0);
448 /* Lookup a function type that returns type TYPE. TYPEPTR, if
449 nonzero, points to a pointer to memory where the function type
450 should be stored. If *TYPEPTR is zero, update it to point to the
451 function type we return. We allocate new memory if needed. */
454 make_function_type (struct type
*type
, struct type
**typeptr
)
456 struct type
*ntype
; /* New type */
458 if (typeptr
== 0 || *typeptr
== 0) /* We'll need to allocate one. */
460 ntype
= alloc_type_copy (type
);
464 else /* We have storage, but need to reset it. */
470 TYPE_TARGET_TYPE (ntype
) = type
;
472 TYPE_LENGTH (ntype
) = 1;
473 TYPE_CODE (ntype
) = TYPE_CODE_FUNC
;
475 INIT_FUNC_SPECIFIC (ntype
);
480 /* Given a type TYPE, return a type of functions that return that type.
481 May need to construct such a type if this is the first use. */
484 lookup_function_type (struct type
*type
)
486 return make_function_type (type
, (struct type
**) 0);
489 /* Given a type TYPE and argument types, return the appropriate
490 function type. If the final type in PARAM_TYPES is NULL, make a
494 lookup_function_type_with_arguments (struct type
*type
,
496 struct type
**param_types
)
498 struct type
*fn
= make_function_type (type
, (struct type
**) 0);
503 if (param_types
[nparams
- 1] == NULL
)
506 TYPE_VARARGS (fn
) = 1;
508 else if (TYPE_CODE (check_typedef (param_types
[nparams
- 1]))
512 /* Caller should have ensured this. */
513 gdb_assert (nparams
== 0);
514 TYPE_PROTOTYPED (fn
) = 1;
518 TYPE_NFIELDS (fn
) = nparams
;
519 TYPE_FIELDS (fn
) = TYPE_ZALLOC (fn
, nparams
* sizeof (struct field
));
520 for (i
= 0; i
< nparams
; ++i
)
521 TYPE_FIELD_TYPE (fn
, i
) = param_types
[i
];
526 /* Identify address space identifier by name --
527 return the integer flag defined in gdbtypes.h. */
530 address_space_name_to_int (struct gdbarch
*gdbarch
, char *space_identifier
)
534 /* Check for known address space delimiters. */
535 if (!strcmp (space_identifier
, "code"))
536 return TYPE_INSTANCE_FLAG_CODE_SPACE
;
537 else if (!strcmp (space_identifier
, "data"))
538 return TYPE_INSTANCE_FLAG_DATA_SPACE
;
539 else if (gdbarch_address_class_name_to_type_flags_p (gdbarch
)
540 && gdbarch_address_class_name_to_type_flags (gdbarch
,
545 error (_("Unknown address space specifier: \"%s\""), space_identifier
);
548 /* Identify address space identifier by integer flag as defined in
549 gdbtypes.h -- return the string version of the adress space name. */
552 address_space_int_to_name (struct gdbarch
*gdbarch
, int space_flag
)
554 if (space_flag
& TYPE_INSTANCE_FLAG_CODE_SPACE
)
556 else if (space_flag
& TYPE_INSTANCE_FLAG_DATA_SPACE
)
558 else if ((space_flag
& TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL
)
559 && gdbarch_address_class_type_flags_to_name_p (gdbarch
))
560 return gdbarch_address_class_type_flags_to_name (gdbarch
, space_flag
);
565 /* Create a new type with instance flags NEW_FLAGS, based on TYPE.
567 If STORAGE is non-NULL, create the new type instance there.
568 STORAGE must be in the same obstack as TYPE. */
571 make_qualified_type (struct type
*type
, int new_flags
,
572 struct type
*storage
)
579 if (TYPE_INSTANCE_FLAGS (ntype
) == new_flags
)
581 ntype
= TYPE_CHAIN (ntype
);
583 while (ntype
!= type
);
585 /* Create a new type instance. */
587 ntype
= alloc_type_instance (type
);
590 /* If STORAGE was provided, it had better be in the same objfile
591 as TYPE. Otherwise, we can't link it into TYPE's cv chain:
592 if one objfile is freed and the other kept, we'd have
593 dangling pointers. */
594 gdb_assert (TYPE_OBJFILE (type
) == TYPE_OBJFILE (storage
));
597 TYPE_MAIN_TYPE (ntype
) = TYPE_MAIN_TYPE (type
);
598 TYPE_CHAIN (ntype
) = ntype
;
601 /* Pointers or references to the original type are not relevant to
603 TYPE_POINTER_TYPE (ntype
) = (struct type
*) 0;
604 TYPE_REFERENCE_TYPE (ntype
) = (struct type
*) 0;
606 /* Chain the new qualified type to the old type. */
607 TYPE_CHAIN (ntype
) = TYPE_CHAIN (type
);
608 TYPE_CHAIN (type
) = ntype
;
610 /* Now set the instance flags and return the new type. */
611 TYPE_INSTANCE_FLAGS (ntype
) = new_flags
;
613 /* Set length of new type to that of the original type. */
614 TYPE_LENGTH (ntype
) = TYPE_LENGTH (type
);
619 /* Make an address-space-delimited variant of a type -- a type that
620 is identical to the one supplied except that it has an address
621 space attribute attached to it (such as "code" or "data").
623 The space attributes "code" and "data" are for Harvard
624 architectures. The address space attributes are for architectures
625 which have alternately sized pointers or pointers with alternate
629 make_type_with_address_space (struct type
*type
, int space_flag
)
631 int new_flags
= ((TYPE_INSTANCE_FLAGS (type
)
632 & ~(TYPE_INSTANCE_FLAG_CODE_SPACE
633 | TYPE_INSTANCE_FLAG_DATA_SPACE
634 | TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL
))
637 return make_qualified_type (type
, new_flags
, NULL
);
640 /* Make a "c-v" variant of a type -- a type that is identical to the
641 one supplied except that it may have const or volatile attributes
642 CNST is a flag for setting the const attribute
643 VOLTL is a flag for setting the volatile attribute
644 TYPE is the base type whose variant we are creating.
646 If TYPEPTR and *TYPEPTR are non-zero, then *TYPEPTR points to
647 storage to hold the new qualified type; *TYPEPTR and TYPE must be
648 in the same objfile. Otherwise, allocate fresh memory for the new
649 type whereever TYPE lives. If TYPEPTR is non-zero, set it to the
650 new type we construct. */
653 make_cv_type (int cnst
, int voltl
,
655 struct type
**typeptr
)
657 struct type
*ntype
; /* New type */
659 int new_flags
= (TYPE_INSTANCE_FLAGS (type
)
660 & ~(TYPE_INSTANCE_FLAG_CONST
661 | TYPE_INSTANCE_FLAG_VOLATILE
));
664 new_flags
|= TYPE_INSTANCE_FLAG_CONST
;
667 new_flags
|= TYPE_INSTANCE_FLAG_VOLATILE
;
669 if (typeptr
&& *typeptr
!= NULL
)
671 /* TYPE and *TYPEPTR must be in the same objfile. We can't have
672 a C-V variant chain that threads across objfiles: if one
673 objfile gets freed, then the other has a broken C-V chain.
675 This code used to try to copy over the main type from TYPE to
676 *TYPEPTR if they were in different objfiles, but that's
677 wrong, too: TYPE may have a field list or member function
678 lists, which refer to types of their own, etc. etc. The
679 whole shebang would need to be copied over recursively; you
680 can't have inter-objfile pointers. The only thing to do is
681 to leave stub types as stub types, and look them up afresh by
682 name each time you encounter them. */
683 gdb_assert (TYPE_OBJFILE (*typeptr
) == TYPE_OBJFILE (type
));
686 ntype
= make_qualified_type (type
, new_flags
,
687 typeptr
? *typeptr
: NULL
);
695 /* Make a 'restrict'-qualified version of TYPE. */
698 make_restrict_type (struct type
*type
)
700 return make_qualified_type (type
,
701 (TYPE_INSTANCE_FLAGS (type
)
702 | TYPE_INSTANCE_FLAG_RESTRICT
),
706 /* Make a type without const, volatile, or restrict. */
709 make_unqualified_type (struct type
*type
)
711 return make_qualified_type (type
,
712 (TYPE_INSTANCE_FLAGS (type
)
713 & ~(TYPE_INSTANCE_FLAG_CONST
714 | TYPE_INSTANCE_FLAG_VOLATILE
715 | TYPE_INSTANCE_FLAG_RESTRICT
)),
719 /* Replace the contents of ntype with the type *type. This changes the
720 contents, rather than the pointer for TYPE_MAIN_TYPE (ntype); thus
721 the changes are propogated to all types in the TYPE_CHAIN.
723 In order to build recursive types, it's inevitable that we'll need
724 to update types in place --- but this sort of indiscriminate
725 smashing is ugly, and needs to be replaced with something more
726 controlled. TYPE_MAIN_TYPE is a step in this direction; it's not
727 clear if more steps are needed. */
730 replace_type (struct type
*ntype
, struct type
*type
)
734 /* These two types had better be in the same objfile. Otherwise,
735 the assignment of one type's main type structure to the other
736 will produce a type with references to objects (names; field
737 lists; etc.) allocated on an objfile other than its own. */
738 gdb_assert (TYPE_OBJFILE (ntype
) == TYPE_OBJFILE (ntype
));
740 *TYPE_MAIN_TYPE (ntype
) = *TYPE_MAIN_TYPE (type
);
742 /* The type length is not a part of the main type. Update it for
743 each type on the variant chain. */
747 /* Assert that this element of the chain has no address-class bits
748 set in its flags. Such type variants might have type lengths
749 which are supposed to be different from the non-address-class
750 variants. This assertion shouldn't ever be triggered because
751 symbol readers which do construct address-class variants don't
752 call replace_type(). */
753 gdb_assert (TYPE_ADDRESS_CLASS_ALL (chain
) == 0);
755 TYPE_LENGTH (chain
) = TYPE_LENGTH (type
);
756 chain
= TYPE_CHAIN (chain
);
758 while (ntype
!= chain
);
760 /* Assert that the two types have equivalent instance qualifiers.
761 This should be true for at least all of our debug readers. */
762 gdb_assert (TYPE_INSTANCE_FLAGS (ntype
) == TYPE_INSTANCE_FLAGS (type
));
765 /* Implement direct support for MEMBER_TYPE in GNU C++.
766 May need to construct such a type if this is the first use.
767 The TYPE is the type of the member. The DOMAIN is the type
768 of the aggregate that the member belongs to. */
771 lookup_memberptr_type (struct type
*type
, struct type
*domain
)
775 mtype
= alloc_type_copy (type
);
776 smash_to_memberptr_type (mtype
, domain
, type
);
780 /* Return a pointer-to-method type, for a method of type TO_TYPE. */
783 lookup_methodptr_type (struct type
*to_type
)
787 mtype
= alloc_type_copy (to_type
);
788 smash_to_methodptr_type (mtype
, to_type
);
792 /* Allocate a stub method whose return type is TYPE. This apparently
793 happens for speed of symbol reading, since parsing out the
794 arguments to the method is cpu-intensive, the way we are doing it.
795 So, we will fill in arguments later. This always returns a fresh
799 allocate_stub_method (struct type
*type
)
803 mtype
= alloc_type_copy (type
);
804 TYPE_CODE (mtype
) = TYPE_CODE_METHOD
;
805 TYPE_LENGTH (mtype
) = 1;
806 TYPE_STUB (mtype
) = 1;
807 TYPE_TARGET_TYPE (mtype
) = type
;
808 /* _DOMAIN_TYPE (mtype) = unknown yet */
812 /* Create a range type with a dynamic range from LOW_BOUND to
813 HIGH_BOUND, inclusive. See create_range_type for further details. */
816 create_range_type (struct type
*result_type
, struct type
*index_type
,
817 const struct dynamic_prop
*low_bound
,
818 const struct dynamic_prop
*high_bound
)
820 if (result_type
== NULL
)
821 result_type
= alloc_type_copy (index_type
);
822 TYPE_CODE (result_type
) = TYPE_CODE_RANGE
;
823 TYPE_TARGET_TYPE (result_type
) = index_type
;
824 if (TYPE_STUB (index_type
))
825 TYPE_TARGET_STUB (result_type
) = 1;
827 TYPE_LENGTH (result_type
) = TYPE_LENGTH (check_typedef (index_type
));
829 TYPE_RANGE_DATA (result_type
) = (struct range_bounds
*)
830 TYPE_ZALLOC (result_type
, sizeof (struct range_bounds
));
831 TYPE_RANGE_DATA (result_type
)->low
= *low_bound
;
832 TYPE_RANGE_DATA (result_type
)->high
= *high_bound
;
834 if (low_bound
->kind
== PROP_CONST
&& low_bound
->data
.const_val
>= 0)
835 TYPE_UNSIGNED (result_type
) = 1;
837 /* Ada allows the declaration of range types whose upper bound is
838 less than the lower bound, so checking the lower bound is not
839 enough. Make sure we do not mark a range type whose upper bound
840 is negative as unsigned. */
841 if (high_bound
->kind
== PROP_CONST
&& high_bound
->data
.const_val
< 0)
842 TYPE_UNSIGNED (result_type
) = 0;
847 /* Create a range type using either a blank type supplied in
848 RESULT_TYPE, or creating a new type, inheriting the objfile from
851 Indices will be of type INDEX_TYPE, and will range from LOW_BOUND
852 to HIGH_BOUND, inclusive.
854 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
855 sure it is TYPE_CODE_UNDEF before we bash it into a range type? */
858 create_static_range_type (struct type
*result_type
, struct type
*index_type
,
859 LONGEST low_bound
, LONGEST high_bound
)
861 struct dynamic_prop low
, high
;
863 low
.kind
= PROP_CONST
;
864 low
.data
.const_val
= low_bound
;
866 high
.kind
= PROP_CONST
;
867 high
.data
.const_val
= high_bound
;
869 result_type
= create_range_type (result_type
, index_type
, &low
, &high
);
874 /* Predicate tests whether BOUNDS are static. Returns 1 if all bounds values
875 are static, otherwise returns 0. */
878 has_static_range (const struct range_bounds
*bounds
)
880 return (bounds
->low
.kind
== PROP_CONST
881 && bounds
->high
.kind
== PROP_CONST
);
885 /* Set *LOWP and *HIGHP to the lower and upper bounds of discrete type
886 TYPE. Return 1 if type is a range type, 0 if it is discrete (and
887 bounds will fit in LONGEST), or -1 otherwise. */
890 get_discrete_bounds (struct type
*type
, LONGEST
*lowp
, LONGEST
*highp
)
892 CHECK_TYPEDEF (type
);
893 switch (TYPE_CODE (type
))
895 case TYPE_CODE_RANGE
:
896 *lowp
= TYPE_LOW_BOUND (type
);
897 *highp
= TYPE_HIGH_BOUND (type
);
900 if (TYPE_NFIELDS (type
) > 0)
902 /* The enums may not be sorted by value, so search all
906 *lowp
= *highp
= TYPE_FIELD_ENUMVAL (type
, 0);
907 for (i
= 0; i
< TYPE_NFIELDS (type
); i
++)
909 if (TYPE_FIELD_ENUMVAL (type
, i
) < *lowp
)
910 *lowp
= TYPE_FIELD_ENUMVAL (type
, i
);
911 if (TYPE_FIELD_ENUMVAL (type
, i
) > *highp
)
912 *highp
= TYPE_FIELD_ENUMVAL (type
, i
);
915 /* Set unsigned indicator if warranted. */
918 TYPE_UNSIGNED (type
) = 1;
932 if (TYPE_LENGTH (type
) > sizeof (LONGEST
)) /* Too big */
934 if (!TYPE_UNSIGNED (type
))
936 *lowp
= -(1 << (TYPE_LENGTH (type
) * TARGET_CHAR_BIT
- 1));
940 /* ... fall through for unsigned ints ... */
943 /* This round-about calculation is to avoid shifting by
944 TYPE_LENGTH (type) * TARGET_CHAR_BIT, which will not work
945 if TYPE_LENGTH (type) == sizeof (LONGEST). */
946 *highp
= 1 << (TYPE_LENGTH (type
) * TARGET_CHAR_BIT
- 1);
947 *highp
= (*highp
- 1) | *highp
;
954 /* Assuming TYPE is a simple, non-empty array type, compute its upper
955 and lower bound. Save the low bound into LOW_BOUND if not NULL.
956 Save the high bound into HIGH_BOUND if not NULL.
958 Return 1 if the operation was successful. Return zero otherwise,
959 in which case the values of LOW_BOUND and HIGH_BOUNDS are unmodified.
961 We now simply use get_discrete_bounds call to get the values
962 of the low and high bounds.
963 get_discrete_bounds can return three values:
964 1, meaning that index is a range,
965 0, meaning that index is a discrete type,
966 or -1 for failure. */
969 get_array_bounds (struct type
*type
, LONGEST
*low_bound
, LONGEST
*high_bound
)
971 struct type
*index
= TYPE_INDEX_TYPE (type
);
979 res
= get_discrete_bounds (index
, &low
, &high
);
983 /* Check if the array bounds are undefined. */
985 && ((low_bound
&& TYPE_ARRAY_LOWER_BOUND_IS_UNDEFINED (type
))
986 || (high_bound
&& TYPE_ARRAY_UPPER_BOUND_IS_UNDEFINED (type
))))
998 /* Create an array type using either a blank type supplied in
999 RESULT_TYPE, or creating a new type, inheriting the objfile from
1002 Elements will be of type ELEMENT_TYPE, the indices will be of type
1005 If BIT_STRIDE is not zero, build a packed array type whose element
1006 size is BIT_STRIDE. Otherwise, ignore this parameter.
1008 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
1009 sure it is TYPE_CODE_UNDEF before we bash it into an array
1013 create_array_type_with_stride (struct type
*result_type
,
1014 struct type
*element_type
,
1015 struct type
*range_type
,
1016 unsigned int bit_stride
)
1018 if (result_type
== NULL
)
1019 result_type
= alloc_type_copy (range_type
);
1021 TYPE_CODE (result_type
) = TYPE_CODE_ARRAY
;
1022 TYPE_TARGET_TYPE (result_type
) = element_type
;
1023 if (has_static_range (TYPE_RANGE_DATA (range_type
)))
1025 LONGEST low_bound
, high_bound
;
1027 if (get_discrete_bounds (range_type
, &low_bound
, &high_bound
) < 0)
1028 low_bound
= high_bound
= 0;
1029 CHECK_TYPEDEF (element_type
);
1030 /* Be careful when setting the array length. Ada arrays can be
1031 empty arrays with the high_bound being smaller than the low_bound.
1032 In such cases, the array length should be zero. */
1033 if (high_bound
< low_bound
)
1034 TYPE_LENGTH (result_type
) = 0;
1035 else if (bit_stride
> 0)
1036 TYPE_LENGTH (result_type
) =
1037 (bit_stride
* (high_bound
- low_bound
+ 1) + 7) / 8;
1039 TYPE_LENGTH (result_type
) =
1040 TYPE_LENGTH (element_type
) * (high_bound
- low_bound
+ 1);
1044 /* This type is dynamic and its length needs to be computed
1045 on demand. In the meantime, avoid leaving the TYPE_LENGTH
1046 undefined by setting it to zero. Although we are not expected
1047 to trust TYPE_LENGTH in this case, setting the size to zero
1048 allows us to avoid allocating objects of random sizes in case
1049 we accidently do. */
1050 TYPE_LENGTH (result_type
) = 0;
1053 TYPE_NFIELDS (result_type
) = 1;
1054 TYPE_FIELDS (result_type
) =
1055 (struct field
*) TYPE_ZALLOC (result_type
, sizeof (struct field
));
1056 TYPE_INDEX_TYPE (result_type
) = range_type
;
1057 TYPE_VPTR_FIELDNO (result_type
) = -1;
1059 TYPE_FIELD_BITSIZE (result_type
, 0) = bit_stride
;
1061 /* TYPE_FLAG_TARGET_STUB will take care of zero length arrays. */
1062 if (TYPE_LENGTH (result_type
) == 0)
1063 TYPE_TARGET_STUB (result_type
) = 1;
1068 /* Same as create_array_type_with_stride but with no bit_stride
1069 (BIT_STRIDE = 0), thus building an unpacked array. */
1072 create_array_type (struct type
*result_type
,
1073 struct type
*element_type
,
1074 struct type
*range_type
)
1076 return create_array_type_with_stride (result_type
, element_type
,
1081 lookup_array_range_type (struct type
*element_type
,
1082 LONGEST low_bound
, LONGEST high_bound
)
1084 struct gdbarch
*gdbarch
= get_type_arch (element_type
);
1085 struct type
*index_type
= builtin_type (gdbarch
)->builtin_int
;
1086 struct type
*range_type
1087 = create_static_range_type (NULL
, index_type
, low_bound
, high_bound
);
1089 return create_array_type (NULL
, element_type
, range_type
);
1092 /* Create a string type using either a blank type supplied in
1093 RESULT_TYPE, or creating a new type. String types are similar
1094 enough to array of char types that we can use create_array_type to
1095 build the basic type and then bash it into a string type.
1097 For fixed length strings, the range type contains 0 as the lower
1098 bound and the length of the string minus one as the upper bound.
1100 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
1101 sure it is TYPE_CODE_UNDEF before we bash it into a string
1105 create_string_type (struct type
*result_type
,
1106 struct type
*string_char_type
,
1107 struct type
*range_type
)
1109 result_type
= create_array_type (result_type
,
1112 TYPE_CODE (result_type
) = TYPE_CODE_STRING
;
1117 lookup_string_range_type (struct type
*string_char_type
,
1118 LONGEST low_bound
, LONGEST high_bound
)
1120 struct type
*result_type
;
1122 result_type
= lookup_array_range_type (string_char_type
,
1123 low_bound
, high_bound
);
1124 TYPE_CODE (result_type
) = TYPE_CODE_STRING
;
1129 create_set_type (struct type
*result_type
, struct type
*domain_type
)
1131 if (result_type
== NULL
)
1132 result_type
= alloc_type_copy (domain_type
);
1134 TYPE_CODE (result_type
) = TYPE_CODE_SET
;
1135 TYPE_NFIELDS (result_type
) = 1;
1136 TYPE_FIELDS (result_type
) = TYPE_ZALLOC (result_type
, sizeof (struct field
));
1138 if (!TYPE_STUB (domain_type
))
1140 LONGEST low_bound
, high_bound
, bit_length
;
1142 if (get_discrete_bounds (domain_type
, &low_bound
, &high_bound
) < 0)
1143 low_bound
= high_bound
= 0;
1144 bit_length
= high_bound
- low_bound
+ 1;
1145 TYPE_LENGTH (result_type
)
1146 = (bit_length
+ TARGET_CHAR_BIT
- 1) / TARGET_CHAR_BIT
;
1148 TYPE_UNSIGNED (result_type
) = 1;
1150 TYPE_FIELD_TYPE (result_type
, 0) = domain_type
;
1155 /* Convert ARRAY_TYPE to a vector type. This may modify ARRAY_TYPE
1156 and any array types nested inside it. */
1159 make_vector_type (struct type
*array_type
)
1161 struct type
*inner_array
, *elt_type
;
1164 /* Find the innermost array type, in case the array is
1165 multi-dimensional. */
1166 inner_array
= array_type
;
1167 while (TYPE_CODE (TYPE_TARGET_TYPE (inner_array
)) == TYPE_CODE_ARRAY
)
1168 inner_array
= TYPE_TARGET_TYPE (inner_array
);
1170 elt_type
= TYPE_TARGET_TYPE (inner_array
);
1171 if (TYPE_CODE (elt_type
) == TYPE_CODE_INT
)
1173 flags
= TYPE_INSTANCE_FLAGS (elt_type
) | TYPE_INSTANCE_FLAG_NOTTEXT
;
1174 elt_type
= make_qualified_type (elt_type
, flags
, NULL
);
1175 TYPE_TARGET_TYPE (inner_array
) = elt_type
;
1178 TYPE_VECTOR (array_type
) = 1;
1182 init_vector_type (struct type
*elt_type
, int n
)
1184 struct type
*array_type
;
1186 array_type
= lookup_array_range_type (elt_type
, 0, n
- 1);
1187 make_vector_type (array_type
);
1191 /* Smash TYPE to be a type of pointers to members of DOMAIN with type
1192 TO_TYPE. A member pointer is a wierd thing -- it amounts to a
1193 typed offset into a struct, e.g. "an int at offset 8". A MEMBER
1194 TYPE doesn't include the offset (that's the value of the MEMBER
1195 itself), but does include the structure type into which it points
1198 When "smashing" the type, we preserve the objfile that the old type
1199 pointed to, since we aren't changing where the type is actually
1203 smash_to_memberptr_type (struct type
*type
, struct type
*domain
,
1204 struct type
*to_type
)
1207 TYPE_TARGET_TYPE (type
) = to_type
;
1208 TYPE_DOMAIN_TYPE (type
) = domain
;
1209 /* Assume that a data member pointer is the same size as a normal
1212 = gdbarch_ptr_bit (get_type_arch (to_type
)) / TARGET_CHAR_BIT
;
1213 TYPE_CODE (type
) = TYPE_CODE_MEMBERPTR
;
1216 /* Smash TYPE to be a type of pointer to methods type TO_TYPE.
1218 When "smashing" the type, we preserve the objfile that the old type
1219 pointed to, since we aren't changing where the type is actually
1223 smash_to_methodptr_type (struct type
*type
, struct type
*to_type
)
1226 TYPE_TARGET_TYPE (type
) = to_type
;
1227 TYPE_DOMAIN_TYPE (type
) = TYPE_DOMAIN_TYPE (to_type
);
1228 TYPE_LENGTH (type
) = cplus_method_ptr_size (to_type
);
1229 TYPE_CODE (type
) = TYPE_CODE_METHODPTR
;
1232 /* Smash TYPE to be a type of method of DOMAIN with type TO_TYPE.
1233 METHOD just means `function that gets an extra "this" argument'.
1235 When "smashing" the type, we preserve the objfile that the old type
1236 pointed to, since we aren't changing where the type is actually
1240 smash_to_method_type (struct type
*type
, struct type
*domain
,
1241 struct type
*to_type
, struct field
*args
,
1242 int nargs
, int varargs
)
1245 TYPE_TARGET_TYPE (type
) = to_type
;
1246 TYPE_DOMAIN_TYPE (type
) = domain
;
1247 TYPE_FIELDS (type
) = args
;
1248 TYPE_NFIELDS (type
) = nargs
;
1250 TYPE_VARARGS (type
) = 1;
1251 TYPE_LENGTH (type
) = 1; /* In practice, this is never needed. */
1252 TYPE_CODE (type
) = TYPE_CODE_METHOD
;
1255 /* Return a typename for a struct/union/enum type without "struct ",
1256 "union ", or "enum ". If the type has a NULL name, return NULL. */
1259 type_name_no_tag (const struct type
*type
)
1261 if (TYPE_TAG_NAME (type
) != NULL
)
1262 return TYPE_TAG_NAME (type
);
1264 /* Is there code which expects this to return the name if there is
1265 no tag name? My guess is that this is mainly used for C++ in
1266 cases where the two will always be the same. */
1267 return TYPE_NAME (type
);
1270 /* A wrapper of type_name_no_tag which calls error if the type is anonymous.
1271 Since GCC PR debug/47510 DWARF provides associated information to detect the
1272 anonymous class linkage name from its typedef.
1274 Parameter TYPE should not yet have CHECK_TYPEDEF applied, this function will
1278 type_name_no_tag_or_error (struct type
*type
)
1280 struct type
*saved_type
= type
;
1282 struct objfile
*objfile
;
1284 CHECK_TYPEDEF (type
);
1286 name
= type_name_no_tag (type
);
1290 name
= type_name_no_tag (saved_type
);
1291 objfile
= TYPE_OBJFILE (saved_type
);
1292 error (_("Invalid anonymous type %s [in module %s], GCC PR debug/47510 bug?"),
1293 name
? name
: "<anonymous>",
1294 objfile
? objfile_name (objfile
) : "<arch>");
1297 /* Lookup a typedef or primitive type named NAME, visible in lexical
1298 block BLOCK. If NOERR is nonzero, return zero if NAME is not
1299 suitably defined. */
1302 lookup_typename (const struct language_defn
*language
,
1303 struct gdbarch
*gdbarch
, const char *name
,
1304 const struct block
*block
, int noerr
)
1309 sym
= lookup_symbol (name
, block
, VAR_DOMAIN
, 0);
1310 if (sym
!= NULL
&& SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
1311 return SYMBOL_TYPE (sym
);
1313 type
= language_lookup_primitive_type_by_name (language
, gdbarch
, name
);
1319 error (_("No type named %s."), name
);
1323 lookup_unsigned_typename (const struct language_defn
*language
,
1324 struct gdbarch
*gdbarch
, const char *name
)
1326 char *uns
= alloca (strlen (name
) + 10);
1328 strcpy (uns
, "unsigned ");
1329 strcpy (uns
+ 9, name
);
1330 return lookup_typename (language
, gdbarch
, uns
, (struct block
*) NULL
, 0);
1334 lookup_signed_typename (const struct language_defn
*language
,
1335 struct gdbarch
*gdbarch
, const char *name
)
1338 char *uns
= alloca (strlen (name
) + 8);
1340 strcpy (uns
, "signed ");
1341 strcpy (uns
+ 7, name
);
1342 t
= lookup_typename (language
, gdbarch
, uns
, (struct block
*) NULL
, 1);
1343 /* If we don't find "signed FOO" just try again with plain "FOO". */
1346 return lookup_typename (language
, gdbarch
, name
, (struct block
*) NULL
, 0);
1349 /* Lookup a structure type named "struct NAME",
1350 visible in lexical block BLOCK. */
1353 lookup_struct (const char *name
, const struct block
*block
)
1357 sym
= lookup_symbol (name
, block
, STRUCT_DOMAIN
, 0);
1361 error (_("No struct type named %s."), name
);
1363 if (TYPE_CODE (SYMBOL_TYPE (sym
)) != TYPE_CODE_STRUCT
)
1365 error (_("This context has class, union or enum %s, not a struct."),
1368 return (SYMBOL_TYPE (sym
));
1371 /* Lookup a union type named "union NAME",
1372 visible in lexical block BLOCK. */
1375 lookup_union (const char *name
, const struct block
*block
)
1380 sym
= lookup_symbol (name
, block
, STRUCT_DOMAIN
, 0);
1383 error (_("No union type named %s."), name
);
1385 t
= SYMBOL_TYPE (sym
);
1387 if (TYPE_CODE (t
) == TYPE_CODE_UNION
)
1390 /* If we get here, it's not a union. */
1391 error (_("This context has class, struct or enum %s, not a union."),
1395 /* Lookup an enum type named "enum NAME",
1396 visible in lexical block BLOCK. */
1399 lookup_enum (const char *name
, const struct block
*block
)
1403 sym
= lookup_symbol (name
, block
, STRUCT_DOMAIN
, 0);
1406 error (_("No enum type named %s."), name
);
1408 if (TYPE_CODE (SYMBOL_TYPE (sym
)) != TYPE_CODE_ENUM
)
1410 error (_("This context has class, struct or union %s, not an enum."),
1413 return (SYMBOL_TYPE (sym
));
1416 /* Lookup a template type named "template NAME<TYPE>",
1417 visible in lexical block BLOCK. */
1420 lookup_template_type (char *name
, struct type
*type
,
1421 const struct block
*block
)
1424 char *nam
= (char *)
1425 alloca (strlen (name
) + strlen (TYPE_NAME (type
)) + 4);
1429 strcat (nam
, TYPE_NAME (type
));
1430 strcat (nam
, " >"); /* FIXME, extra space still introduced in gcc? */
1432 sym
= lookup_symbol (nam
, block
, VAR_DOMAIN
, 0);
1436 error (_("No template type named %s."), name
);
1438 if (TYPE_CODE (SYMBOL_TYPE (sym
)) != TYPE_CODE_STRUCT
)
1440 error (_("This context has class, union or enum %s, not a struct."),
1443 return (SYMBOL_TYPE (sym
));
1446 /* Given a type TYPE, lookup the type of the component of type named
1449 TYPE can be either a struct or union, or a pointer or reference to
1450 a struct or union. If it is a pointer or reference, its target
1451 type is automatically used. Thus '.' and '->' are interchangable,
1452 as specified for the definitions of the expression element types
1453 STRUCTOP_STRUCT and STRUCTOP_PTR.
1455 If NOERR is nonzero, return zero if NAME is not suitably defined.
1456 If NAME is the name of a baseclass type, return that type. */
1459 lookup_struct_elt_type (struct type
*type
, const char *name
, int noerr
)
1466 CHECK_TYPEDEF (type
);
1467 if (TYPE_CODE (type
) != TYPE_CODE_PTR
1468 && TYPE_CODE (type
) != TYPE_CODE_REF
)
1470 type
= TYPE_TARGET_TYPE (type
);
1473 if (TYPE_CODE (type
) != TYPE_CODE_STRUCT
1474 && TYPE_CODE (type
) != TYPE_CODE_UNION
)
1476 typename
= type_to_string (type
);
1477 make_cleanup (xfree
, typename
);
1478 error (_("Type %s is not a structure or union type."), typename
);
1482 /* FIXME: This change put in by Michael seems incorrect for the case
1483 where the structure tag name is the same as the member name.
1484 I.e. when doing "ptype bell->bar" for "struct foo { int bar; int
1485 foo; } bell;" Disabled by fnf. */
1489 typename
= type_name_no_tag (type
);
1490 if (typename
!= NULL
&& strcmp (typename
, name
) == 0)
1495 for (i
= TYPE_NFIELDS (type
) - 1; i
>= TYPE_N_BASECLASSES (type
); i
--)
1497 const char *t_field_name
= TYPE_FIELD_NAME (type
, i
);
1499 if (t_field_name
&& (strcmp_iw (t_field_name
, name
) == 0))
1501 return TYPE_FIELD_TYPE (type
, i
);
1503 else if (!t_field_name
|| *t_field_name
== '\0')
1505 struct type
*subtype
1506 = lookup_struct_elt_type (TYPE_FIELD_TYPE (type
, i
), name
, 1);
1508 if (subtype
!= NULL
)
1513 /* OK, it's not in this class. Recursively check the baseclasses. */
1514 for (i
= TYPE_N_BASECLASSES (type
) - 1; i
>= 0; i
--)
1518 t
= lookup_struct_elt_type (TYPE_BASECLASS (type
, i
), name
, 1);
1530 typename
= type_to_string (type
);
1531 make_cleanup (xfree
, typename
);
1532 error (_("Type %s has no component named %s."), typename
, name
);
1535 /* Store in *MAX the largest number representable by unsigned integer type
1539 get_unsigned_type_max (struct type
*type
, ULONGEST
*max
)
1543 CHECK_TYPEDEF (type
);
1544 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_INT
&& TYPE_UNSIGNED (type
));
1545 gdb_assert (TYPE_LENGTH (type
) <= sizeof (ULONGEST
));
1547 /* Written this way to avoid overflow. */
1548 n
= TYPE_LENGTH (type
) * TARGET_CHAR_BIT
;
1549 *max
= ((((ULONGEST
) 1 << (n
- 1)) - 1) << 1) | 1;
1552 /* Store in *MIN, *MAX the smallest and largest numbers representable by
1553 signed integer type TYPE. */
1556 get_signed_type_minmax (struct type
*type
, LONGEST
*min
, LONGEST
*max
)
1560 CHECK_TYPEDEF (type
);
1561 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_INT
&& !TYPE_UNSIGNED (type
));
1562 gdb_assert (TYPE_LENGTH (type
) <= sizeof (LONGEST
));
1564 n
= TYPE_LENGTH (type
) * TARGET_CHAR_BIT
;
1565 *min
= -((ULONGEST
) 1 << (n
- 1));
1566 *max
= ((ULONGEST
) 1 << (n
- 1)) - 1;
1569 /* Lookup the vptr basetype/fieldno values for TYPE.
1570 If found store vptr_basetype in *BASETYPEP if non-NULL, and return
1571 vptr_fieldno. Also, if found and basetype is from the same objfile,
1573 If not found, return -1 and ignore BASETYPEP.
1574 Callers should be aware that in some cases (for example,
1575 the type or one of its baseclasses is a stub type and we are
1576 debugging a .o file, or the compiler uses DWARF-2 and is not GCC),
1577 this function will not be able to find the
1578 virtual function table pointer, and vptr_fieldno will remain -1 and
1579 vptr_basetype will remain NULL or incomplete. */
1582 get_vptr_fieldno (struct type
*type
, struct type
**basetypep
)
1584 CHECK_TYPEDEF (type
);
1586 if (TYPE_VPTR_FIELDNO (type
) < 0)
1590 /* We must start at zero in case the first (and only) baseclass
1591 is virtual (and hence we cannot share the table pointer). */
1592 for (i
= 0; i
< TYPE_N_BASECLASSES (type
); i
++)
1594 struct type
*baseclass
= check_typedef (TYPE_BASECLASS (type
, i
));
1596 struct type
*basetype
;
1598 fieldno
= get_vptr_fieldno (baseclass
, &basetype
);
1601 /* If the type comes from a different objfile we can't cache
1602 it, it may have a different lifetime. PR 2384 */
1603 if (TYPE_OBJFILE (type
) == TYPE_OBJFILE (basetype
))
1605 TYPE_VPTR_FIELDNO (type
) = fieldno
;
1606 TYPE_VPTR_BASETYPE (type
) = basetype
;
1609 *basetypep
= basetype
;
1620 *basetypep
= TYPE_VPTR_BASETYPE (type
);
1621 return TYPE_VPTR_FIELDNO (type
);
1626 stub_noname_complaint (void)
1628 complaint (&symfile_complaints
, _("stub type has NULL name"));
1631 /* Worker for is_dynamic_type. */
1634 is_dynamic_type_internal (struct type
*type
, int top_level
)
1636 type
= check_typedef (type
);
1638 /* We only want to recognize references at the outermost level. */
1639 if (top_level
&& TYPE_CODE (type
) == TYPE_CODE_REF
)
1640 type
= check_typedef (TYPE_TARGET_TYPE (type
));
1642 /* Types that have a dynamic TYPE_DATA_LOCATION are considered
1643 dynamic, even if the type itself is statically defined.
1644 From a user's point of view, this may appear counter-intuitive;
1645 but it makes sense in this context, because the point is to determine
1646 whether any part of the type needs to be resolved before it can
1648 if (TYPE_DATA_LOCATION (type
) != NULL
1649 && (TYPE_DATA_LOCATION_KIND (type
) == PROP_LOCEXPR
1650 || TYPE_DATA_LOCATION_KIND (type
) == PROP_LOCLIST
))
1653 switch (TYPE_CODE (type
))
1655 case TYPE_CODE_RANGE
:
1656 return !has_static_range (TYPE_RANGE_DATA (type
));
1658 case TYPE_CODE_ARRAY
:
1660 gdb_assert (TYPE_NFIELDS (type
) == 1);
1662 /* The array is dynamic if either the bounds are dynamic,
1663 or the elements it contains have a dynamic contents. */
1664 if (is_dynamic_type_internal (TYPE_INDEX_TYPE (type
), 0))
1666 return is_dynamic_type_internal (TYPE_TARGET_TYPE (type
), 0);
1669 case TYPE_CODE_STRUCT
:
1670 case TYPE_CODE_UNION
:
1674 for (i
= 0; i
< TYPE_NFIELDS (type
); ++i
)
1675 if (!field_is_static (&TYPE_FIELD (type
, i
))
1676 && is_dynamic_type_internal (TYPE_FIELD_TYPE (type
, i
), 0))
1685 /* See gdbtypes.h. */
1688 is_dynamic_type (struct type
*type
)
1690 return is_dynamic_type_internal (type
, 1);
1693 static struct type
*resolve_dynamic_type_internal (struct type
*type
,
1697 /* Given a dynamic range type (dyn_range_type) and address,
1698 return a static version of that type. */
1700 static struct type
*
1701 resolve_dynamic_range (struct type
*dyn_range_type
, CORE_ADDR addr
)
1704 struct type
*static_range_type
;
1705 const struct dynamic_prop
*prop
;
1706 const struct dwarf2_locexpr_baton
*baton
;
1707 struct dynamic_prop low_bound
, high_bound
;
1709 gdb_assert (TYPE_CODE (dyn_range_type
) == TYPE_CODE_RANGE
);
1711 prop
= &TYPE_RANGE_DATA (dyn_range_type
)->low
;
1712 if (dwarf2_evaluate_property (prop
, addr
, &value
))
1714 low_bound
.kind
= PROP_CONST
;
1715 low_bound
.data
.const_val
= value
;
1719 low_bound
.kind
= PROP_UNDEFINED
;
1720 low_bound
.data
.const_val
= 0;
1723 prop
= &TYPE_RANGE_DATA (dyn_range_type
)->high
;
1724 if (dwarf2_evaluate_property (prop
, addr
, &value
))
1726 high_bound
.kind
= PROP_CONST
;
1727 high_bound
.data
.const_val
= value
;
1729 if (TYPE_RANGE_DATA (dyn_range_type
)->flag_upper_bound_is_count
)
1730 high_bound
.data
.const_val
1731 = low_bound
.data
.const_val
+ high_bound
.data
.const_val
- 1;
1735 high_bound
.kind
= PROP_UNDEFINED
;
1736 high_bound
.data
.const_val
= 0;
1739 static_range_type
= create_range_type (copy_type (dyn_range_type
),
1740 TYPE_TARGET_TYPE (dyn_range_type
),
1741 &low_bound
, &high_bound
);
1742 TYPE_RANGE_DATA (static_range_type
)->flag_bound_evaluated
= 1;
1743 return static_range_type
;
1746 /* Resolves dynamic bound values of an array type TYPE to static ones.
1747 ADDRESS might be needed to resolve the subrange bounds, it is the location
1748 of the associated array. */
1750 static struct type
*
1751 resolve_dynamic_array (struct type
*type
, CORE_ADDR addr
)
1754 struct type
*elt_type
;
1755 struct type
*range_type
;
1756 struct type
*ary_dim
;
1758 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_ARRAY
);
1761 range_type
= check_typedef (TYPE_INDEX_TYPE (elt_type
));
1762 range_type
= resolve_dynamic_range (range_type
, addr
);
1764 ary_dim
= check_typedef (TYPE_TARGET_TYPE (elt_type
));
1766 if (ary_dim
!= NULL
&& TYPE_CODE (ary_dim
) == TYPE_CODE_ARRAY
)
1767 elt_type
= resolve_dynamic_array (TYPE_TARGET_TYPE (type
), addr
);
1769 elt_type
= TYPE_TARGET_TYPE (type
);
1771 return create_array_type (copy_type (type
),
1776 /* Resolve dynamic bounds of members of the union TYPE to static
1779 static struct type
*
1780 resolve_dynamic_union (struct type
*type
, CORE_ADDR addr
)
1782 struct type
*resolved_type
;
1784 unsigned int max_len
= 0;
1786 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_UNION
);
1788 resolved_type
= copy_type (type
);
1789 TYPE_FIELDS (resolved_type
)
1790 = TYPE_ALLOC (resolved_type
,
1791 TYPE_NFIELDS (resolved_type
) * sizeof (struct field
));
1792 memcpy (TYPE_FIELDS (resolved_type
),
1794 TYPE_NFIELDS (resolved_type
) * sizeof (struct field
));
1795 for (i
= 0; i
< TYPE_NFIELDS (resolved_type
); ++i
)
1799 if (field_is_static (&TYPE_FIELD (type
, i
)))
1802 t
= resolve_dynamic_type_internal (TYPE_FIELD_TYPE (resolved_type
, i
),
1804 TYPE_FIELD_TYPE (resolved_type
, i
) = t
;
1805 if (TYPE_LENGTH (t
) > max_len
)
1806 max_len
= TYPE_LENGTH (t
);
1809 TYPE_LENGTH (resolved_type
) = max_len
;
1810 return resolved_type
;
1813 /* Resolve dynamic bounds of members of the struct TYPE to static
1816 static struct type
*
1817 resolve_dynamic_struct (struct type
*type
, CORE_ADDR addr
)
1819 struct type
*resolved_type
;
1821 unsigned resolved_type_bit_length
= 0;
1823 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_STRUCT
);
1824 gdb_assert (TYPE_NFIELDS (type
) > 0);
1826 resolved_type
= copy_type (type
);
1827 TYPE_FIELDS (resolved_type
)
1828 = TYPE_ALLOC (resolved_type
,
1829 TYPE_NFIELDS (resolved_type
) * sizeof (struct field
));
1830 memcpy (TYPE_FIELDS (resolved_type
),
1832 TYPE_NFIELDS (resolved_type
) * sizeof (struct field
));
1833 for (i
= 0; i
< TYPE_NFIELDS (resolved_type
); ++i
)
1835 unsigned new_bit_length
;
1837 if (field_is_static (&TYPE_FIELD (type
, i
)))
1840 TYPE_FIELD_TYPE (resolved_type
, i
)
1841 = resolve_dynamic_type_internal (TYPE_FIELD_TYPE (resolved_type
, i
),
1844 /* As we know this field is not a static field, the field's
1845 field_loc_kind should be FIELD_LOC_KIND_BITPOS. Verify
1846 this is the case, but only trigger a simple error rather
1847 than an internal error if that fails. While failing
1848 that verification indicates a bug in our code, the error
1849 is not severe enough to suggest to the user he stops
1850 his debugging session because of it. */
1851 if (TYPE_FIELD_LOC_KIND (resolved_type
, i
) != FIELD_LOC_KIND_BITPOS
)
1852 error (_("Cannot determine struct field location"
1853 " (invalid location kind)"));
1854 new_bit_length
= TYPE_FIELD_BITPOS (resolved_type
, i
);
1855 if (TYPE_FIELD_BITSIZE (resolved_type
, i
) != 0)
1856 new_bit_length
+= TYPE_FIELD_BITSIZE (resolved_type
, i
);
1858 new_bit_length
+= (TYPE_LENGTH (TYPE_FIELD_TYPE (resolved_type
, i
))
1861 /* Normally, we would use the position and size of the last field
1862 to determine the size of the enclosing structure. But GCC seems
1863 to be encoding the position of some fields incorrectly when
1864 the struct contains a dynamic field that is not placed last.
1865 So we compute the struct size based on the field that has
1866 the highest position + size - probably the best we can do. */
1867 if (new_bit_length
> resolved_type_bit_length
)
1868 resolved_type_bit_length
= new_bit_length
;
1871 TYPE_LENGTH (resolved_type
)
1872 = (resolved_type_bit_length
+ TARGET_CHAR_BIT
- 1) / TARGET_CHAR_BIT
;
1874 return resolved_type
;
1877 /* Worker for resolved_dynamic_type. */
1879 static struct type
*
1880 resolve_dynamic_type_internal (struct type
*type
, CORE_ADDR addr
,
1883 struct type
*real_type
= check_typedef (type
);
1884 struct type
*resolved_type
= type
;
1885 const struct dynamic_prop
*prop
;
1888 if (!is_dynamic_type_internal (real_type
, top_level
))
1891 switch (TYPE_CODE (type
))
1893 case TYPE_CODE_TYPEDEF
:
1894 resolved_type
= copy_type (type
);
1895 TYPE_TARGET_TYPE (resolved_type
)
1896 = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (type
), addr
,
1902 CORE_ADDR target_addr
= read_memory_typed_address (addr
, type
);
1904 resolved_type
= copy_type (type
);
1905 TYPE_TARGET_TYPE (resolved_type
)
1906 = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (type
),
1907 target_addr
, top_level
);
1911 case TYPE_CODE_ARRAY
:
1912 resolved_type
= resolve_dynamic_array (type
, addr
);
1915 case TYPE_CODE_RANGE
:
1916 resolved_type
= resolve_dynamic_range (type
, addr
);
1919 case TYPE_CODE_UNION
:
1920 resolved_type
= resolve_dynamic_union (type
, addr
);
1923 case TYPE_CODE_STRUCT
:
1924 resolved_type
= resolve_dynamic_struct (type
, addr
);
1928 /* Resolve data_location attribute. */
1929 prop
= TYPE_DATA_LOCATION (resolved_type
);
1930 if (dwarf2_evaluate_property (prop
, addr
, &value
))
1932 TYPE_DATA_LOCATION_ADDR (resolved_type
) = value
;
1933 TYPE_DATA_LOCATION_KIND (resolved_type
) = PROP_CONST
;
1936 TYPE_DATA_LOCATION (resolved_type
) = NULL
;
1938 return resolved_type
;
1941 /* See gdbtypes.h */
1944 resolve_dynamic_type (struct type
*type
, CORE_ADDR addr
)
1946 return resolve_dynamic_type_internal (type
, addr
, 1);
1949 /* Find the real type of TYPE. This function returns the real type,
1950 after removing all layers of typedefs, and completing opaque or stub
1951 types. Completion changes the TYPE argument, but stripping of
1954 Instance flags (e.g. const/volatile) are preserved as typedefs are
1955 stripped. If necessary a new qualified form of the underlying type
1958 NOTE: This will return a typedef if TYPE_TARGET_TYPE for the typedef has
1959 not been computed and we're either in the middle of reading symbols, or
1960 there was no name for the typedef in the debug info.
1962 NOTE: Lookup of opaque types can throw errors for invalid symbol files.
1963 QUITs in the symbol reading code can also throw.
1964 Thus this function can throw an exception.
1966 If TYPE is a TYPE_CODE_TYPEDEF, its length is updated to the length of
1969 If this is a stubbed struct (i.e. declared as struct foo *), see if
1970 we can find a full definition in some other file. If so, copy this
1971 definition, so we can use it in future. There used to be a comment
1972 (but not any code) that if we don't find a full definition, we'd
1973 set a flag so we don't spend time in the future checking the same
1974 type. That would be a mistake, though--we might load in more
1975 symbols which contain a full definition for the type. */
1978 check_typedef (struct type
*type
)
1980 struct type
*orig_type
= type
;
1981 /* While we're removing typedefs, we don't want to lose qualifiers.
1982 E.g., const/volatile. */
1983 int instance_flags
= TYPE_INSTANCE_FLAGS (type
);
1987 while (TYPE_CODE (type
) == TYPE_CODE_TYPEDEF
)
1989 if (!TYPE_TARGET_TYPE (type
))
1994 /* It is dangerous to call lookup_symbol if we are currently
1995 reading a symtab. Infinite recursion is one danger. */
1996 if (currently_reading_symtab
)
1997 return make_qualified_type (type
, instance_flags
, NULL
);
1999 name
= type_name_no_tag (type
);
2000 /* FIXME: shouldn't we separately check the TYPE_NAME and
2001 the TYPE_TAG_NAME, and look in STRUCT_DOMAIN and/or
2002 VAR_DOMAIN as appropriate? (this code was written before
2003 TYPE_NAME and TYPE_TAG_NAME were separate). */
2006 stub_noname_complaint ();
2007 return make_qualified_type (type
, instance_flags
, NULL
);
2009 sym
= lookup_symbol (name
, 0, STRUCT_DOMAIN
, 0);
2011 TYPE_TARGET_TYPE (type
) = SYMBOL_TYPE (sym
);
2012 else /* TYPE_CODE_UNDEF */
2013 TYPE_TARGET_TYPE (type
) = alloc_type_arch (get_type_arch (type
));
2015 type
= TYPE_TARGET_TYPE (type
);
2017 /* Preserve the instance flags as we traverse down the typedef chain.
2019 Handling address spaces/classes is nasty, what do we do if there's a
2021 E.g., what if an outer typedef marks the type as class_1 and an inner
2022 typedef marks the type as class_2?
2023 This is the wrong place to do such error checking. We leave it to
2024 the code that created the typedef in the first place to flag the
2025 error. We just pick the outer address space (akin to letting the
2026 outer cast in a chain of casting win), instead of assuming
2027 "it can't happen". */
2029 const int ALL_SPACES
= (TYPE_INSTANCE_FLAG_CODE_SPACE
2030 | TYPE_INSTANCE_FLAG_DATA_SPACE
);
2031 const int ALL_CLASSES
= TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL
;
2032 int new_instance_flags
= TYPE_INSTANCE_FLAGS (type
);
2034 /* Treat code vs data spaces and address classes separately. */
2035 if ((instance_flags
& ALL_SPACES
) != 0)
2036 new_instance_flags
&= ~ALL_SPACES
;
2037 if ((instance_flags
& ALL_CLASSES
) != 0)
2038 new_instance_flags
&= ~ALL_CLASSES
;
2040 instance_flags
|= new_instance_flags
;
2044 /* If this is a struct/class/union with no fields, then check
2045 whether a full definition exists somewhere else. This is for
2046 systems where a type definition with no fields is issued for such
2047 types, instead of identifying them as stub types in the first
2050 if (TYPE_IS_OPAQUE (type
)
2051 && opaque_type_resolution
2052 && !currently_reading_symtab
)
2054 const char *name
= type_name_no_tag (type
);
2055 struct type
*newtype
;
2059 stub_noname_complaint ();
2060 return make_qualified_type (type
, instance_flags
, NULL
);
2062 newtype
= lookup_transparent_type (name
);
2066 /* If the resolved type and the stub are in the same
2067 objfile, then replace the stub type with the real deal.
2068 But if they're in separate objfiles, leave the stub
2069 alone; we'll just look up the transparent type every time
2070 we call check_typedef. We can't create pointers between
2071 types allocated to different objfiles, since they may
2072 have different lifetimes. Trying to copy NEWTYPE over to
2073 TYPE's objfile is pointless, too, since you'll have to
2074 move over any other types NEWTYPE refers to, which could
2075 be an unbounded amount of stuff. */
2076 if (TYPE_OBJFILE (newtype
) == TYPE_OBJFILE (type
))
2077 type
= make_qualified_type (newtype
,
2078 TYPE_INSTANCE_FLAGS (type
),
2084 /* Otherwise, rely on the stub flag being set for opaque/stubbed
2086 else if (TYPE_STUB (type
) && !currently_reading_symtab
)
2088 const char *name
= type_name_no_tag (type
);
2089 /* FIXME: shouldn't we separately check the TYPE_NAME and the
2090 TYPE_TAG_NAME, and look in STRUCT_DOMAIN and/or VAR_DOMAIN
2091 as appropriate? (this code was written before TYPE_NAME and
2092 TYPE_TAG_NAME were separate). */
2097 stub_noname_complaint ();
2098 return make_qualified_type (type
, instance_flags
, NULL
);
2100 sym
= lookup_symbol (name
, 0, STRUCT_DOMAIN
, 0);
2103 /* Same as above for opaque types, we can replace the stub
2104 with the complete type only if they are in the same
2106 if (TYPE_OBJFILE (SYMBOL_TYPE(sym
)) == TYPE_OBJFILE (type
))
2107 type
= make_qualified_type (SYMBOL_TYPE (sym
),
2108 TYPE_INSTANCE_FLAGS (type
),
2111 type
= SYMBOL_TYPE (sym
);
2115 if (TYPE_TARGET_STUB (type
))
2117 struct type
*range_type
;
2118 struct type
*target_type
= check_typedef (TYPE_TARGET_TYPE (type
));
2120 if (TYPE_STUB (target_type
) || TYPE_TARGET_STUB (target_type
))
2122 /* Nothing we can do. */
2124 else if (TYPE_CODE (type
) == TYPE_CODE_RANGE
)
2126 TYPE_LENGTH (type
) = TYPE_LENGTH (target_type
);
2127 TYPE_TARGET_STUB (type
) = 0;
2131 type
= make_qualified_type (type
, instance_flags
, NULL
);
2133 /* Cache TYPE_LENGTH for future use. */
2134 TYPE_LENGTH (orig_type
) = TYPE_LENGTH (type
);
2139 /* Parse a type expression in the string [P..P+LENGTH). If an error
2140 occurs, silently return a void type. */
2142 static struct type
*
2143 safe_parse_type (struct gdbarch
*gdbarch
, char *p
, int length
)
2145 struct ui_file
*saved_gdb_stderr
;
2146 struct type
*type
= NULL
; /* Initialize to keep gcc happy. */
2147 volatile struct gdb_exception except
;
2149 /* Suppress error messages. */
2150 saved_gdb_stderr
= gdb_stderr
;
2151 gdb_stderr
= ui_file_new ();
2153 /* Call parse_and_eval_type() without fear of longjmp()s. */
2154 TRY_CATCH (except
, RETURN_MASK_ERROR
)
2156 type
= parse_and_eval_type (p
, length
);
2159 if (except
.reason
< 0)
2160 type
= builtin_type (gdbarch
)->builtin_void
;
2162 /* Stop suppressing error messages. */
2163 ui_file_delete (gdb_stderr
);
2164 gdb_stderr
= saved_gdb_stderr
;
2169 /* Ugly hack to convert method stubs into method types.
2171 He ain't kiddin'. This demangles the name of the method into a
2172 string including argument types, parses out each argument type,
2173 generates a string casting a zero to that type, evaluates the
2174 string, and stuffs the resulting type into an argtype vector!!!
2175 Then it knows the type of the whole function (including argument
2176 types for overloading), which info used to be in the stab's but was
2177 removed to hack back the space required for them. */
2180 check_stub_method (struct type
*type
, int method_id
, int signature_id
)
2182 struct gdbarch
*gdbarch
= get_type_arch (type
);
2184 char *mangled_name
= gdb_mangle_name (type
, method_id
, signature_id
);
2185 char *demangled_name
= gdb_demangle (mangled_name
,
2186 DMGL_PARAMS
| DMGL_ANSI
);
2187 char *argtypetext
, *p
;
2188 int depth
= 0, argcount
= 1;
2189 struct field
*argtypes
;
2192 /* Make sure we got back a function string that we can use. */
2194 p
= strchr (demangled_name
, '(');
2198 if (demangled_name
== NULL
|| p
== NULL
)
2199 error (_("Internal: Cannot demangle mangled name `%s'."),
2202 /* Now, read in the parameters that define this type. */
2207 if (*p
== '(' || *p
== '<')
2211 else if (*p
== ')' || *p
== '>')
2215 else if (*p
== ',' && depth
== 0)
2223 /* If we read one argument and it was ``void'', don't count it. */
2224 if (strncmp (argtypetext
, "(void)", 6) == 0)
2227 /* We need one extra slot, for the THIS pointer. */
2229 argtypes
= (struct field
*)
2230 TYPE_ALLOC (type
, (argcount
+ 1) * sizeof (struct field
));
2233 /* Add THIS pointer for non-static methods. */
2234 f
= TYPE_FN_FIELDLIST1 (type
, method_id
);
2235 if (TYPE_FN_FIELD_STATIC_P (f
, signature_id
))
2239 argtypes
[0].type
= lookup_pointer_type (type
);
2243 if (*p
!= ')') /* () means no args, skip while. */
2248 if (depth
<= 0 && (*p
== ',' || *p
== ')'))
2250 /* Avoid parsing of ellipsis, they will be handled below.
2251 Also avoid ``void'' as above. */
2252 if (strncmp (argtypetext
, "...", p
- argtypetext
) != 0
2253 && strncmp (argtypetext
, "void", p
- argtypetext
) != 0)
2255 argtypes
[argcount
].type
=
2256 safe_parse_type (gdbarch
, argtypetext
, p
- argtypetext
);
2259 argtypetext
= p
+ 1;
2262 if (*p
== '(' || *p
== '<')
2266 else if (*p
== ')' || *p
== '>')
2275 TYPE_FN_FIELD_PHYSNAME (f
, signature_id
) = mangled_name
;
2277 /* Now update the old "stub" type into a real type. */
2278 mtype
= TYPE_FN_FIELD_TYPE (f
, signature_id
);
2279 TYPE_DOMAIN_TYPE (mtype
) = type
;
2280 TYPE_FIELDS (mtype
) = argtypes
;
2281 TYPE_NFIELDS (mtype
) = argcount
;
2282 TYPE_STUB (mtype
) = 0;
2283 TYPE_FN_FIELD_STUB (f
, signature_id
) = 0;
2285 TYPE_VARARGS (mtype
) = 1;
2287 xfree (demangled_name
);
2290 /* This is the external interface to check_stub_method, above. This
2291 function unstubs all of the signatures for TYPE's METHOD_ID method
2292 name. After calling this function TYPE_FN_FIELD_STUB will be
2293 cleared for each signature and TYPE_FN_FIELDLIST_NAME will be
2296 This function unfortunately can not die until stabs do. */
2299 check_stub_method_group (struct type
*type
, int method_id
)
2301 int len
= TYPE_FN_FIELDLIST_LENGTH (type
, method_id
);
2302 struct fn_field
*f
= TYPE_FN_FIELDLIST1 (type
, method_id
);
2303 int j
, found_stub
= 0;
2305 for (j
= 0; j
< len
; j
++)
2306 if (TYPE_FN_FIELD_STUB (f
, j
))
2309 check_stub_method (type
, method_id
, j
);
2312 /* GNU v3 methods with incorrect names were corrected when we read
2313 in type information, because it was cheaper to do it then. The
2314 only GNU v2 methods with incorrect method names are operators and
2315 destructors; destructors were also corrected when we read in type
2318 Therefore the only thing we need to handle here are v2 operator
2320 if (found_stub
&& strncmp (TYPE_FN_FIELD_PHYSNAME (f
, 0), "_Z", 2) != 0)
2323 char dem_opname
[256];
2325 ret
= cplus_demangle_opname (TYPE_FN_FIELDLIST_NAME (type
,
2327 dem_opname
, DMGL_ANSI
);
2329 ret
= cplus_demangle_opname (TYPE_FN_FIELDLIST_NAME (type
,
2333 TYPE_FN_FIELDLIST_NAME (type
, method_id
) = xstrdup (dem_opname
);
2337 /* Ensure it is in .rodata (if available) by workarounding GCC PR 44690. */
2338 const struct cplus_struct_type cplus_struct_default
= { };
2341 allocate_cplus_struct_type (struct type
*type
)
2343 if (HAVE_CPLUS_STRUCT (type
))
2344 /* Structure was already allocated. Nothing more to do. */
2347 TYPE_SPECIFIC_FIELD (type
) = TYPE_SPECIFIC_CPLUS_STUFF
;
2348 TYPE_RAW_CPLUS_SPECIFIC (type
) = (struct cplus_struct_type
*)
2349 TYPE_ALLOC (type
, sizeof (struct cplus_struct_type
));
2350 *(TYPE_RAW_CPLUS_SPECIFIC (type
)) = cplus_struct_default
;
2353 const struct gnat_aux_type gnat_aux_default
=
2356 /* Set the TYPE's type-specific kind to TYPE_SPECIFIC_GNAT_STUFF,
2357 and allocate the associated gnat-specific data. The gnat-specific
2358 data is also initialized to gnat_aux_default. */
2361 allocate_gnat_aux_type (struct type
*type
)
2363 TYPE_SPECIFIC_FIELD (type
) = TYPE_SPECIFIC_GNAT_STUFF
;
2364 TYPE_GNAT_SPECIFIC (type
) = (struct gnat_aux_type
*)
2365 TYPE_ALLOC (type
, sizeof (struct gnat_aux_type
));
2366 *(TYPE_GNAT_SPECIFIC (type
)) = gnat_aux_default
;
2369 /* Helper function to initialize the standard scalar types.
2371 If NAME is non-NULL, then it is used to initialize the type name.
2372 Note that NAME is not copied; it is required to have a lifetime at
2373 least as long as OBJFILE. */
2376 init_type (enum type_code code
, int length
, int flags
,
2377 const char *name
, struct objfile
*objfile
)
2381 type
= alloc_type (objfile
);
2382 TYPE_CODE (type
) = code
;
2383 TYPE_LENGTH (type
) = length
;
2385 gdb_assert (!(flags
& (TYPE_FLAG_MIN
- 1)));
2386 if (flags
& TYPE_FLAG_UNSIGNED
)
2387 TYPE_UNSIGNED (type
) = 1;
2388 if (flags
& TYPE_FLAG_NOSIGN
)
2389 TYPE_NOSIGN (type
) = 1;
2390 if (flags
& TYPE_FLAG_STUB
)
2391 TYPE_STUB (type
) = 1;
2392 if (flags
& TYPE_FLAG_TARGET_STUB
)
2393 TYPE_TARGET_STUB (type
) = 1;
2394 if (flags
& TYPE_FLAG_STATIC
)
2395 TYPE_STATIC (type
) = 1;
2396 if (flags
& TYPE_FLAG_PROTOTYPED
)
2397 TYPE_PROTOTYPED (type
) = 1;
2398 if (flags
& TYPE_FLAG_INCOMPLETE
)
2399 TYPE_INCOMPLETE (type
) = 1;
2400 if (flags
& TYPE_FLAG_VARARGS
)
2401 TYPE_VARARGS (type
) = 1;
2402 if (flags
& TYPE_FLAG_VECTOR
)
2403 TYPE_VECTOR (type
) = 1;
2404 if (flags
& TYPE_FLAG_STUB_SUPPORTED
)
2405 TYPE_STUB_SUPPORTED (type
) = 1;
2406 if (flags
& TYPE_FLAG_FIXED_INSTANCE
)
2407 TYPE_FIXED_INSTANCE (type
) = 1;
2408 if (flags
& TYPE_FLAG_GNU_IFUNC
)
2409 TYPE_GNU_IFUNC (type
) = 1;
2411 TYPE_NAME (type
) = name
;
2415 if (name
&& strcmp (name
, "char") == 0)
2416 TYPE_NOSIGN (type
) = 1;
2420 case TYPE_CODE_STRUCT
:
2421 case TYPE_CODE_UNION
:
2422 case TYPE_CODE_NAMESPACE
:
2423 INIT_CPLUS_SPECIFIC (type
);
2426 TYPE_SPECIFIC_FIELD (type
) = TYPE_SPECIFIC_FLOATFORMAT
;
2428 case TYPE_CODE_FUNC
:
2429 INIT_FUNC_SPECIFIC (type
);
2435 /* Queries on types. */
2438 can_dereference (struct type
*t
)
2440 /* FIXME: Should we return true for references as well as
2445 && TYPE_CODE (t
) == TYPE_CODE_PTR
2446 && TYPE_CODE (TYPE_TARGET_TYPE (t
)) != TYPE_CODE_VOID
);
2450 is_integral_type (struct type
*t
)
2455 && ((TYPE_CODE (t
) == TYPE_CODE_INT
)
2456 || (TYPE_CODE (t
) == TYPE_CODE_ENUM
)
2457 || (TYPE_CODE (t
) == TYPE_CODE_FLAGS
)
2458 || (TYPE_CODE (t
) == TYPE_CODE_CHAR
)
2459 || (TYPE_CODE (t
) == TYPE_CODE_RANGE
)
2460 || (TYPE_CODE (t
) == TYPE_CODE_BOOL
)));
2463 /* Return true if TYPE is scalar. */
2466 is_scalar_type (struct type
*type
)
2468 CHECK_TYPEDEF (type
);
2470 switch (TYPE_CODE (type
))
2472 case TYPE_CODE_ARRAY
:
2473 case TYPE_CODE_STRUCT
:
2474 case TYPE_CODE_UNION
:
2476 case TYPE_CODE_STRING
:
2483 /* Return true if T is scalar, or a composite type which in practice has
2484 the memory layout of a scalar type. E.g., an array or struct with only
2485 one scalar element inside it, or a union with only scalar elements. */
2488 is_scalar_type_recursive (struct type
*t
)
2492 if (is_scalar_type (t
))
2494 /* Are we dealing with an array or string of known dimensions? */
2495 else if ((TYPE_CODE (t
) == TYPE_CODE_ARRAY
2496 || TYPE_CODE (t
) == TYPE_CODE_STRING
) && TYPE_NFIELDS (t
) == 1
2497 && TYPE_CODE (TYPE_INDEX_TYPE (t
)) == TYPE_CODE_RANGE
)
2499 LONGEST low_bound
, high_bound
;
2500 struct type
*elt_type
= check_typedef (TYPE_TARGET_TYPE (t
));
2502 get_discrete_bounds (TYPE_INDEX_TYPE (t
), &low_bound
, &high_bound
);
2504 return high_bound
== low_bound
&& is_scalar_type_recursive (elt_type
);
2506 /* Are we dealing with a struct with one element? */
2507 else if (TYPE_CODE (t
) == TYPE_CODE_STRUCT
&& TYPE_NFIELDS (t
) == 1)
2508 return is_scalar_type_recursive (TYPE_FIELD_TYPE (t
, 0));
2509 else if (TYPE_CODE (t
) == TYPE_CODE_UNION
)
2511 int i
, n
= TYPE_NFIELDS (t
);
2513 /* If all elements of the union are scalar, then the union is scalar. */
2514 for (i
= 0; i
< n
; i
++)
2515 if (!is_scalar_type_recursive (TYPE_FIELD_TYPE (t
, i
)))
2524 /* Return true is T is a class or a union. False otherwise. */
2527 class_or_union_p (const struct type
*t
)
2529 return (TYPE_CODE (t
) == TYPE_CODE_STRUCT
2530 || TYPE_CODE (t
) == TYPE_CODE_UNION
);
2533 /* A helper function which returns true if types A and B represent the
2534 "same" class type. This is true if the types have the same main
2535 type, or the same name. */
2538 class_types_same_p (const struct type
*a
, const struct type
*b
)
2540 return (TYPE_MAIN_TYPE (a
) == TYPE_MAIN_TYPE (b
)
2541 || (TYPE_NAME (a
) && TYPE_NAME (b
)
2542 && !strcmp (TYPE_NAME (a
), TYPE_NAME (b
))));
2545 /* If BASE is an ancestor of DCLASS return the distance between them.
2546 otherwise return -1;
2550 class B: public A {};
2551 class C: public B {};
2554 distance_to_ancestor (A, A, 0) = 0
2555 distance_to_ancestor (A, B, 0) = 1
2556 distance_to_ancestor (A, C, 0) = 2
2557 distance_to_ancestor (A, D, 0) = 3
2559 If PUBLIC is 1 then only public ancestors are considered,
2560 and the function returns the distance only if BASE is a public ancestor
2564 distance_to_ancestor (A, D, 1) = -1. */
2567 distance_to_ancestor (struct type
*base
, struct type
*dclass
, int public)
2572 CHECK_TYPEDEF (base
);
2573 CHECK_TYPEDEF (dclass
);
2575 if (class_types_same_p (base
, dclass
))
2578 for (i
= 0; i
< TYPE_N_BASECLASSES (dclass
); i
++)
2580 if (public && ! BASETYPE_VIA_PUBLIC (dclass
, i
))
2583 d
= distance_to_ancestor (base
, TYPE_BASECLASS (dclass
, i
), public);
2591 /* Check whether BASE is an ancestor or base class or DCLASS
2592 Return 1 if so, and 0 if not.
2593 Note: If BASE and DCLASS are of the same type, this function
2594 will return 1. So for some class A, is_ancestor (A, A) will
2598 is_ancestor (struct type
*base
, struct type
*dclass
)
2600 return distance_to_ancestor (base
, dclass
, 0) >= 0;
2603 /* Like is_ancestor, but only returns true when BASE is a public
2604 ancestor of DCLASS. */
2607 is_public_ancestor (struct type
*base
, struct type
*dclass
)
2609 return distance_to_ancestor (base
, dclass
, 1) >= 0;
2612 /* A helper function for is_unique_ancestor. */
2615 is_unique_ancestor_worker (struct type
*base
, struct type
*dclass
,
2617 const gdb_byte
*valaddr
, int embedded_offset
,
2618 CORE_ADDR address
, struct value
*val
)
2622 CHECK_TYPEDEF (base
);
2623 CHECK_TYPEDEF (dclass
);
2625 for (i
= 0; i
< TYPE_N_BASECLASSES (dclass
) && count
< 2; ++i
)
2630 iter
= check_typedef (TYPE_BASECLASS (dclass
, i
));
2632 this_offset
= baseclass_offset (dclass
, i
, valaddr
, embedded_offset
,
2635 if (class_types_same_p (base
, iter
))
2637 /* If this is the first subclass, set *OFFSET and set count
2638 to 1. Otherwise, if this is at the same offset as
2639 previous instances, do nothing. Otherwise, increment
2643 *offset
= this_offset
;
2646 else if (this_offset
== *offset
)
2654 count
+= is_unique_ancestor_worker (base
, iter
, offset
,
2656 embedded_offset
+ this_offset
,
2663 /* Like is_ancestor, but only returns true if BASE is a unique base
2664 class of the type of VAL. */
2667 is_unique_ancestor (struct type
*base
, struct value
*val
)
2671 return is_unique_ancestor_worker (base
, value_type (val
), &offset
,
2672 value_contents_for_printing (val
),
2673 value_embedded_offset (val
),
2674 value_address (val
), val
) == 1;
2678 /* Overload resolution. */
2680 /* Return the sum of the rank of A with the rank of B. */
2683 sum_ranks (struct rank a
, struct rank b
)
2686 c
.rank
= a
.rank
+ b
.rank
;
2687 c
.subrank
= a
.subrank
+ b
.subrank
;
2691 /* Compare rank A and B and return:
2693 1 if a is better than b
2694 -1 if b is better than a. */
2697 compare_ranks (struct rank a
, struct rank b
)
2699 if (a
.rank
== b
.rank
)
2701 if (a
.subrank
== b
.subrank
)
2703 if (a
.subrank
< b
.subrank
)
2705 if (a
.subrank
> b
.subrank
)
2709 if (a
.rank
< b
.rank
)
2712 /* a.rank > b.rank */
2716 /* Functions for overload resolution begin here. */
2718 /* Compare two badness vectors A and B and return the result.
2719 0 => A and B are identical
2720 1 => A and B are incomparable
2721 2 => A is better than B
2722 3 => A is worse than B */
2725 compare_badness (struct badness_vector
*a
, struct badness_vector
*b
)
2729 short found_pos
= 0; /* any positives in c? */
2730 short found_neg
= 0; /* any negatives in c? */
2732 /* differing lengths => incomparable */
2733 if (a
->length
!= b
->length
)
2736 /* Subtract b from a */
2737 for (i
= 0; i
< a
->length
; i
++)
2739 tmp
= compare_ranks (b
->rank
[i
], a
->rank
[i
]);
2749 return 1; /* incomparable */
2751 return 3; /* A > B */
2757 return 2; /* A < B */
2759 return 0; /* A == B */
2763 /* Rank a function by comparing its parameter types (PARMS, length
2764 NPARMS), to the types of an argument list (ARGS, length NARGS).
2765 Return a pointer to a badness vector. This has NARGS + 1
2768 struct badness_vector
*
2769 rank_function (struct type
**parms
, int nparms
,
2770 struct value
**args
, int nargs
)
2773 struct badness_vector
*bv
;
2774 int min_len
= nparms
< nargs
? nparms
: nargs
;
2776 bv
= xmalloc (sizeof (struct badness_vector
));
2777 bv
->length
= nargs
+ 1; /* add 1 for the length-match rank. */
2778 bv
->rank
= XNEWVEC (struct rank
, nargs
+ 1);
2780 /* First compare the lengths of the supplied lists.
2781 If there is a mismatch, set it to a high value. */
2783 /* pai/1997-06-03 FIXME: when we have debug info about default
2784 arguments and ellipsis parameter lists, we should consider those
2785 and rank the length-match more finely. */
2787 LENGTH_MATCH (bv
) = (nargs
!= nparms
)
2788 ? LENGTH_MISMATCH_BADNESS
2789 : EXACT_MATCH_BADNESS
;
2791 /* Now rank all the parameters of the candidate function. */
2792 for (i
= 1; i
<= min_len
; i
++)
2793 bv
->rank
[i
] = rank_one_type (parms
[i
- 1], value_type (args
[i
- 1]),
2796 /* If more arguments than parameters, add dummy entries. */
2797 for (i
= min_len
+ 1; i
<= nargs
; i
++)
2798 bv
->rank
[i
] = TOO_FEW_PARAMS_BADNESS
;
2803 /* Compare the names of two integer types, assuming that any sign
2804 qualifiers have been checked already. We do it this way because
2805 there may be an "int" in the name of one of the types. */
2808 integer_types_same_name_p (const char *first
, const char *second
)
2810 int first_p
, second_p
;
2812 /* If both are shorts, return 1; if neither is a short, keep
2814 first_p
= (strstr (first
, "short") != NULL
);
2815 second_p
= (strstr (second
, "short") != NULL
);
2816 if (first_p
&& second_p
)
2818 if (first_p
|| second_p
)
2821 /* Likewise for long. */
2822 first_p
= (strstr (first
, "long") != NULL
);
2823 second_p
= (strstr (second
, "long") != NULL
);
2824 if (first_p
&& second_p
)
2826 if (first_p
|| second_p
)
2829 /* Likewise for char. */
2830 first_p
= (strstr (first
, "char") != NULL
);
2831 second_p
= (strstr (second
, "char") != NULL
);
2832 if (first_p
&& second_p
)
2834 if (first_p
|| second_p
)
2837 /* They must both be ints. */
2841 /* Compares type A to type B returns 1 if the represent the same type
2845 types_equal (struct type
*a
, struct type
*b
)
2847 /* Identical type pointers. */
2848 /* However, this still doesn't catch all cases of same type for b
2849 and a. The reason is that builtin types are different from
2850 the same ones constructed from the object. */
2854 /* Resolve typedefs */
2855 if (TYPE_CODE (a
) == TYPE_CODE_TYPEDEF
)
2856 a
= check_typedef (a
);
2857 if (TYPE_CODE (b
) == TYPE_CODE_TYPEDEF
)
2858 b
= check_typedef (b
);
2860 /* If after resolving typedefs a and b are not of the same type
2861 code then they are not equal. */
2862 if (TYPE_CODE (a
) != TYPE_CODE (b
))
2865 /* If a and b are both pointers types or both reference types then
2866 they are equal of the same type iff the objects they refer to are
2867 of the same type. */
2868 if (TYPE_CODE (a
) == TYPE_CODE_PTR
2869 || TYPE_CODE (a
) == TYPE_CODE_REF
)
2870 return types_equal (TYPE_TARGET_TYPE (a
),
2871 TYPE_TARGET_TYPE (b
));
2873 /* Well, damnit, if the names are exactly the same, I'll say they
2874 are exactly the same. This happens when we generate method
2875 stubs. The types won't point to the same address, but they
2876 really are the same. */
2878 if (TYPE_NAME (a
) && TYPE_NAME (b
)
2879 && strcmp (TYPE_NAME (a
), TYPE_NAME (b
)) == 0)
2882 /* Check if identical after resolving typedefs. */
2886 /* Two function types are equal if their argument and return types
2888 if (TYPE_CODE (a
) == TYPE_CODE_FUNC
)
2892 if (TYPE_NFIELDS (a
) != TYPE_NFIELDS (b
))
2895 if (!types_equal (TYPE_TARGET_TYPE (a
), TYPE_TARGET_TYPE (b
)))
2898 for (i
= 0; i
< TYPE_NFIELDS (a
); ++i
)
2899 if (!types_equal (TYPE_FIELD_TYPE (a
, i
), TYPE_FIELD_TYPE (b
, i
)))
2908 /* Deep comparison of types. */
2910 /* An entry in the type-equality bcache. */
2912 typedef struct type_equality_entry
2914 struct type
*type1
, *type2
;
2915 } type_equality_entry_d
;
2917 DEF_VEC_O (type_equality_entry_d
);
2919 /* A helper function to compare two strings. Returns 1 if they are
2920 the same, 0 otherwise. Handles NULLs properly. */
2923 compare_maybe_null_strings (const char *s
, const char *t
)
2925 if (s
== NULL
&& t
!= NULL
)
2927 else if (s
!= NULL
&& t
== NULL
)
2929 else if (s
== NULL
&& t
== NULL
)
2931 return strcmp (s
, t
) == 0;
2934 /* A helper function for check_types_worklist that checks two types for
2935 "deep" equality. Returns non-zero if the types are considered the
2936 same, zero otherwise. */
2939 check_types_equal (struct type
*type1
, struct type
*type2
,
2940 VEC (type_equality_entry_d
) **worklist
)
2942 CHECK_TYPEDEF (type1
);
2943 CHECK_TYPEDEF (type2
);
2948 if (TYPE_CODE (type1
) != TYPE_CODE (type2
)
2949 || TYPE_LENGTH (type1
) != TYPE_LENGTH (type2
)
2950 || TYPE_UNSIGNED (type1
) != TYPE_UNSIGNED (type2
)
2951 || TYPE_NOSIGN (type1
) != TYPE_NOSIGN (type2
)
2952 || TYPE_VARARGS (type1
) != TYPE_VARARGS (type2
)
2953 || TYPE_VECTOR (type1
) != TYPE_VECTOR (type2
)
2954 || TYPE_NOTTEXT (type1
) != TYPE_NOTTEXT (type2
)
2955 || TYPE_INSTANCE_FLAGS (type1
) != TYPE_INSTANCE_FLAGS (type2
)
2956 || TYPE_NFIELDS (type1
) != TYPE_NFIELDS (type2
))
2959 if (!compare_maybe_null_strings (TYPE_TAG_NAME (type1
),
2960 TYPE_TAG_NAME (type2
)))
2962 if (!compare_maybe_null_strings (TYPE_NAME (type1
), TYPE_NAME (type2
)))
2965 if (TYPE_CODE (type1
) == TYPE_CODE_RANGE
)
2967 if (memcmp (TYPE_RANGE_DATA (type1
), TYPE_RANGE_DATA (type2
),
2968 sizeof (*TYPE_RANGE_DATA (type1
))) != 0)
2975 for (i
= 0; i
< TYPE_NFIELDS (type1
); ++i
)
2977 const struct field
*field1
= &TYPE_FIELD (type1
, i
);
2978 const struct field
*field2
= &TYPE_FIELD (type2
, i
);
2979 struct type_equality_entry entry
;
2981 if (FIELD_ARTIFICIAL (*field1
) != FIELD_ARTIFICIAL (*field2
)
2982 || FIELD_BITSIZE (*field1
) != FIELD_BITSIZE (*field2
)
2983 || FIELD_LOC_KIND (*field1
) != FIELD_LOC_KIND (*field2
))
2985 if (!compare_maybe_null_strings (FIELD_NAME (*field1
),
2986 FIELD_NAME (*field2
)))
2988 switch (FIELD_LOC_KIND (*field1
))
2990 case FIELD_LOC_KIND_BITPOS
:
2991 if (FIELD_BITPOS (*field1
) != FIELD_BITPOS (*field2
))
2994 case FIELD_LOC_KIND_ENUMVAL
:
2995 if (FIELD_ENUMVAL (*field1
) != FIELD_ENUMVAL (*field2
))
2998 case FIELD_LOC_KIND_PHYSADDR
:
2999 if (FIELD_STATIC_PHYSADDR (*field1
)
3000 != FIELD_STATIC_PHYSADDR (*field2
))
3003 case FIELD_LOC_KIND_PHYSNAME
:
3004 if (!compare_maybe_null_strings (FIELD_STATIC_PHYSNAME (*field1
),
3005 FIELD_STATIC_PHYSNAME (*field2
)))
3008 case FIELD_LOC_KIND_DWARF_BLOCK
:
3010 struct dwarf2_locexpr_baton
*block1
, *block2
;
3012 block1
= FIELD_DWARF_BLOCK (*field1
);
3013 block2
= FIELD_DWARF_BLOCK (*field2
);
3014 if (block1
->per_cu
!= block2
->per_cu
3015 || block1
->size
!= block2
->size
3016 || memcmp (block1
->data
, block2
->data
, block1
->size
) != 0)
3021 internal_error (__FILE__
, __LINE__
, _("Unsupported field kind "
3022 "%d by check_types_equal"),
3023 FIELD_LOC_KIND (*field1
));
3026 entry
.type1
= FIELD_TYPE (*field1
);
3027 entry
.type2
= FIELD_TYPE (*field2
);
3028 VEC_safe_push (type_equality_entry_d
, *worklist
, &entry
);
3032 if (TYPE_TARGET_TYPE (type1
) != NULL
)
3034 struct type_equality_entry entry
;
3036 if (TYPE_TARGET_TYPE (type2
) == NULL
)
3039 entry
.type1
= TYPE_TARGET_TYPE (type1
);
3040 entry
.type2
= TYPE_TARGET_TYPE (type2
);
3041 VEC_safe_push (type_equality_entry_d
, *worklist
, &entry
);
3043 else if (TYPE_TARGET_TYPE (type2
) != NULL
)
3049 /* Check types on a worklist for equality. Returns zero if any pair
3050 is not equal, non-zero if they are all considered equal. */
3053 check_types_worklist (VEC (type_equality_entry_d
) **worklist
,
3054 struct bcache
*cache
)
3056 while (!VEC_empty (type_equality_entry_d
, *worklist
))
3058 struct type_equality_entry entry
;
3061 entry
= *VEC_last (type_equality_entry_d
, *worklist
);
3062 VEC_pop (type_equality_entry_d
, *worklist
);
3064 /* If the type pair has already been visited, we know it is
3066 bcache_full (&entry
, sizeof (entry
), cache
, &added
);
3070 if (check_types_equal (entry
.type1
, entry
.type2
, worklist
) == 0)
3077 /* Return non-zero if types TYPE1 and TYPE2 are equal, as determined by a
3078 "deep comparison". Otherwise return zero. */
3081 types_deeply_equal (struct type
*type1
, struct type
*type2
)
3083 volatile struct gdb_exception except
;
3085 struct bcache
*cache
;
3086 VEC (type_equality_entry_d
) *worklist
= NULL
;
3087 struct type_equality_entry entry
;
3089 gdb_assert (type1
!= NULL
&& type2
!= NULL
);
3091 /* Early exit for the simple case. */
3095 cache
= bcache_xmalloc (NULL
, NULL
);
3097 entry
.type1
= type1
;
3098 entry
.type2
= type2
;
3099 VEC_safe_push (type_equality_entry_d
, worklist
, &entry
);
3101 TRY_CATCH (except
, RETURN_MASK_ALL
)
3103 result
= check_types_worklist (&worklist
, cache
);
3105 /* check_types_worklist calls several nested helper functions,
3106 some of which can raise a GDB Exception, so we just check
3107 and rethrow here. If there is a GDB exception, a comparison
3108 is not capable (or trusted), so exit. */
3109 bcache_xfree (cache
);
3110 VEC_free (type_equality_entry_d
, worklist
);
3111 /* Rethrow if there was a problem. */
3112 if (except
.reason
< 0)
3113 throw_exception (except
);
3118 /* Compare one type (PARM) for compatibility with another (ARG).
3119 * PARM is intended to be the parameter type of a function; and
3120 * ARG is the supplied argument's type. This function tests if
3121 * the latter can be converted to the former.
3122 * VALUE is the argument's value or NULL if none (or called recursively)
3124 * Return 0 if they are identical types;
3125 * Otherwise, return an integer which corresponds to how compatible
3126 * PARM is to ARG. The higher the return value, the worse the match.
3127 * Generally the "bad" conversions are all uniformly assigned a 100. */
3130 rank_one_type (struct type
*parm
, struct type
*arg
, struct value
*value
)
3132 struct rank rank
= {0,0};
3134 if (types_equal (parm
, arg
))
3135 return EXACT_MATCH_BADNESS
;
3137 /* Resolve typedefs */
3138 if (TYPE_CODE (parm
) == TYPE_CODE_TYPEDEF
)
3139 parm
= check_typedef (parm
);
3140 if (TYPE_CODE (arg
) == TYPE_CODE_TYPEDEF
)
3141 arg
= check_typedef (arg
);
3143 /* See through references, since we can almost make non-references
3145 if (TYPE_CODE (arg
) == TYPE_CODE_REF
)
3146 return (sum_ranks (rank_one_type (parm
, TYPE_TARGET_TYPE (arg
), NULL
),
3147 REFERENCE_CONVERSION_BADNESS
));
3148 if (TYPE_CODE (parm
) == TYPE_CODE_REF
)
3149 return (sum_ranks (rank_one_type (TYPE_TARGET_TYPE (parm
), arg
, NULL
),
3150 REFERENCE_CONVERSION_BADNESS
));
3152 /* Debugging only. */
3153 fprintf_filtered (gdb_stderr
,
3154 "------ Arg is %s [%d], parm is %s [%d]\n",
3155 TYPE_NAME (arg
), TYPE_CODE (arg
),
3156 TYPE_NAME (parm
), TYPE_CODE (parm
));
3158 /* x -> y means arg of type x being supplied for parameter of type y. */
3160 switch (TYPE_CODE (parm
))
3163 switch (TYPE_CODE (arg
))
3167 /* Allowed pointer conversions are:
3168 (a) pointer to void-pointer conversion. */
3169 if (TYPE_CODE (TYPE_TARGET_TYPE (parm
)) == TYPE_CODE_VOID
)
3170 return VOID_PTR_CONVERSION_BADNESS
;
3172 /* (b) pointer to ancestor-pointer conversion. */
3173 rank
.subrank
= distance_to_ancestor (TYPE_TARGET_TYPE (parm
),
3174 TYPE_TARGET_TYPE (arg
),
3176 if (rank
.subrank
>= 0)
3177 return sum_ranks (BASE_PTR_CONVERSION_BADNESS
, rank
);
3179 return INCOMPATIBLE_TYPE_BADNESS
;
3180 case TYPE_CODE_ARRAY
:
3181 if (types_equal (TYPE_TARGET_TYPE (parm
),
3182 TYPE_TARGET_TYPE (arg
)))
3183 return EXACT_MATCH_BADNESS
;
3184 return INCOMPATIBLE_TYPE_BADNESS
;
3185 case TYPE_CODE_FUNC
:
3186 return rank_one_type (TYPE_TARGET_TYPE (parm
), arg
, NULL
);
3188 if (value
!= NULL
&& TYPE_CODE (value_type (value
)) == TYPE_CODE_INT
)
3190 if (value_as_long (value
) == 0)
3192 /* Null pointer conversion: allow it to be cast to a pointer.
3193 [4.10.1 of C++ standard draft n3290] */
3194 return NULL_POINTER_CONVERSION_BADNESS
;
3198 /* If type checking is disabled, allow the conversion. */
3199 if (!strict_type_checking
)
3200 return NS_INTEGER_POINTER_CONVERSION_BADNESS
;
3204 case TYPE_CODE_ENUM
:
3205 case TYPE_CODE_FLAGS
:
3206 case TYPE_CODE_CHAR
:
3207 case TYPE_CODE_RANGE
:
3208 case TYPE_CODE_BOOL
:
3210 return INCOMPATIBLE_TYPE_BADNESS
;
3212 case TYPE_CODE_ARRAY
:
3213 switch (TYPE_CODE (arg
))
3216 case TYPE_CODE_ARRAY
:
3217 return rank_one_type (TYPE_TARGET_TYPE (parm
),
3218 TYPE_TARGET_TYPE (arg
), NULL
);
3220 return INCOMPATIBLE_TYPE_BADNESS
;
3222 case TYPE_CODE_FUNC
:
3223 switch (TYPE_CODE (arg
))
3225 case TYPE_CODE_PTR
: /* funcptr -> func */
3226 return rank_one_type (parm
, TYPE_TARGET_TYPE (arg
), NULL
);
3228 return INCOMPATIBLE_TYPE_BADNESS
;
3231 switch (TYPE_CODE (arg
))
3234 if (TYPE_LENGTH (arg
) == TYPE_LENGTH (parm
))
3236 /* Deal with signed, unsigned, and plain chars and
3237 signed and unsigned ints. */
3238 if (TYPE_NOSIGN (parm
))
3240 /* This case only for character types. */
3241 if (TYPE_NOSIGN (arg
))
3242 return EXACT_MATCH_BADNESS
; /* plain char -> plain char */
3243 else /* signed/unsigned char -> plain char */
3244 return INTEGER_CONVERSION_BADNESS
;
3246 else if (TYPE_UNSIGNED (parm
))
3248 if (TYPE_UNSIGNED (arg
))
3250 /* unsigned int -> unsigned int, or
3251 unsigned long -> unsigned long */
3252 if (integer_types_same_name_p (TYPE_NAME (parm
),
3254 return EXACT_MATCH_BADNESS
;
3255 else if (integer_types_same_name_p (TYPE_NAME (arg
),
3257 && integer_types_same_name_p (TYPE_NAME (parm
),
3259 /* unsigned int -> unsigned long */
3260 return INTEGER_PROMOTION_BADNESS
;
3262 /* unsigned long -> unsigned int */
3263 return INTEGER_CONVERSION_BADNESS
;
3267 if (integer_types_same_name_p (TYPE_NAME (arg
),
3269 && integer_types_same_name_p (TYPE_NAME (parm
),
3271 /* signed long -> unsigned int */
3272 return INTEGER_CONVERSION_BADNESS
;
3274 /* signed int/long -> unsigned int/long */
3275 return INTEGER_CONVERSION_BADNESS
;
3278 else if (!TYPE_NOSIGN (arg
) && !TYPE_UNSIGNED (arg
))
3280 if (integer_types_same_name_p (TYPE_NAME (parm
),
3282 return EXACT_MATCH_BADNESS
;
3283 else if (integer_types_same_name_p (TYPE_NAME (arg
),
3285 && integer_types_same_name_p (TYPE_NAME (parm
),
3287 return INTEGER_PROMOTION_BADNESS
;
3289 return INTEGER_CONVERSION_BADNESS
;
3292 return INTEGER_CONVERSION_BADNESS
;
3294 else if (TYPE_LENGTH (arg
) < TYPE_LENGTH (parm
))
3295 return INTEGER_PROMOTION_BADNESS
;
3297 return INTEGER_CONVERSION_BADNESS
;
3298 case TYPE_CODE_ENUM
:
3299 case TYPE_CODE_FLAGS
:
3300 case TYPE_CODE_CHAR
:
3301 case TYPE_CODE_RANGE
:
3302 case TYPE_CODE_BOOL
:
3303 if (TYPE_DECLARED_CLASS (arg
))
3304 return INCOMPATIBLE_TYPE_BADNESS
;
3305 return INTEGER_PROMOTION_BADNESS
;
3307 return INT_FLOAT_CONVERSION_BADNESS
;
3309 return NS_POINTER_CONVERSION_BADNESS
;
3311 return INCOMPATIBLE_TYPE_BADNESS
;
3314 case TYPE_CODE_ENUM
:
3315 switch (TYPE_CODE (arg
))
3318 case TYPE_CODE_CHAR
:
3319 case TYPE_CODE_RANGE
:
3320 case TYPE_CODE_BOOL
:
3321 case TYPE_CODE_ENUM
:
3322 if (TYPE_DECLARED_CLASS (parm
) || TYPE_DECLARED_CLASS (arg
))
3323 return INCOMPATIBLE_TYPE_BADNESS
;
3324 return INTEGER_CONVERSION_BADNESS
;
3326 return INT_FLOAT_CONVERSION_BADNESS
;
3328 return INCOMPATIBLE_TYPE_BADNESS
;
3331 case TYPE_CODE_CHAR
:
3332 switch (TYPE_CODE (arg
))
3334 case TYPE_CODE_RANGE
:
3335 case TYPE_CODE_BOOL
:
3336 case TYPE_CODE_ENUM
:
3337 if (TYPE_DECLARED_CLASS (arg
))
3338 return INCOMPATIBLE_TYPE_BADNESS
;
3339 return INTEGER_CONVERSION_BADNESS
;
3341 return INT_FLOAT_CONVERSION_BADNESS
;
3343 if (TYPE_LENGTH (arg
) > TYPE_LENGTH (parm
))
3344 return INTEGER_CONVERSION_BADNESS
;
3345 else if (TYPE_LENGTH (arg
) < TYPE_LENGTH (parm
))
3346 return INTEGER_PROMOTION_BADNESS
;
3347 /* >>> !! else fall through !! <<< */
3348 case TYPE_CODE_CHAR
:
3349 /* Deal with signed, unsigned, and plain chars for C++ and
3350 with int cases falling through from previous case. */
3351 if (TYPE_NOSIGN (parm
))
3353 if (TYPE_NOSIGN (arg
))
3354 return EXACT_MATCH_BADNESS
;
3356 return INTEGER_CONVERSION_BADNESS
;
3358 else if (TYPE_UNSIGNED (parm
))
3360 if (TYPE_UNSIGNED (arg
))
3361 return EXACT_MATCH_BADNESS
;
3363 return INTEGER_PROMOTION_BADNESS
;
3365 else if (!TYPE_NOSIGN (arg
) && !TYPE_UNSIGNED (arg
))
3366 return EXACT_MATCH_BADNESS
;
3368 return INTEGER_CONVERSION_BADNESS
;
3370 return INCOMPATIBLE_TYPE_BADNESS
;
3373 case TYPE_CODE_RANGE
:
3374 switch (TYPE_CODE (arg
))
3377 case TYPE_CODE_CHAR
:
3378 case TYPE_CODE_RANGE
:
3379 case TYPE_CODE_BOOL
:
3380 case TYPE_CODE_ENUM
:
3381 return INTEGER_CONVERSION_BADNESS
;
3383 return INT_FLOAT_CONVERSION_BADNESS
;
3385 return INCOMPATIBLE_TYPE_BADNESS
;
3388 case TYPE_CODE_BOOL
:
3389 switch (TYPE_CODE (arg
))
3391 /* n3290 draft, section 4.12.1 (conv.bool):
3393 "A prvalue of arithmetic, unscoped enumeration, pointer, or
3394 pointer to member type can be converted to a prvalue of type
3395 bool. A zero value, null pointer value, or null member pointer
3396 value is converted to false; any other value is converted to
3397 true. A prvalue of type std::nullptr_t can be converted to a
3398 prvalue of type bool; the resulting value is false." */
3400 case TYPE_CODE_CHAR
:
3401 case TYPE_CODE_ENUM
:
3403 case TYPE_CODE_MEMBERPTR
:
3405 return BOOL_CONVERSION_BADNESS
;
3406 case TYPE_CODE_RANGE
:
3407 return INCOMPATIBLE_TYPE_BADNESS
;
3408 case TYPE_CODE_BOOL
:
3409 return EXACT_MATCH_BADNESS
;
3411 return INCOMPATIBLE_TYPE_BADNESS
;
3415 switch (TYPE_CODE (arg
))
3418 if (TYPE_LENGTH (arg
) < TYPE_LENGTH (parm
))
3419 return FLOAT_PROMOTION_BADNESS
;
3420 else if (TYPE_LENGTH (arg
) == TYPE_LENGTH (parm
))
3421 return EXACT_MATCH_BADNESS
;
3423 return FLOAT_CONVERSION_BADNESS
;
3425 case TYPE_CODE_BOOL
:
3426 case TYPE_CODE_ENUM
:
3427 case TYPE_CODE_RANGE
:
3428 case TYPE_CODE_CHAR
:
3429 return INT_FLOAT_CONVERSION_BADNESS
;
3431 return INCOMPATIBLE_TYPE_BADNESS
;
3434 case TYPE_CODE_COMPLEX
:
3435 switch (TYPE_CODE (arg
))
3436 { /* Strictly not needed for C++, but... */
3438 return FLOAT_PROMOTION_BADNESS
;
3439 case TYPE_CODE_COMPLEX
:
3440 return EXACT_MATCH_BADNESS
;
3442 return INCOMPATIBLE_TYPE_BADNESS
;
3445 case TYPE_CODE_STRUCT
:
3446 switch (TYPE_CODE (arg
))
3448 case TYPE_CODE_STRUCT
:
3449 /* Check for derivation */
3450 rank
.subrank
= distance_to_ancestor (parm
, arg
, 0);
3451 if (rank
.subrank
>= 0)
3452 return sum_ranks (BASE_CONVERSION_BADNESS
, rank
);
3453 /* else fall through */
3455 return INCOMPATIBLE_TYPE_BADNESS
;
3458 case TYPE_CODE_UNION
:
3459 switch (TYPE_CODE (arg
))
3461 case TYPE_CODE_UNION
:
3463 return INCOMPATIBLE_TYPE_BADNESS
;
3466 case TYPE_CODE_MEMBERPTR
:
3467 switch (TYPE_CODE (arg
))
3470 return INCOMPATIBLE_TYPE_BADNESS
;
3473 case TYPE_CODE_METHOD
:
3474 switch (TYPE_CODE (arg
))
3478 return INCOMPATIBLE_TYPE_BADNESS
;
3482 switch (TYPE_CODE (arg
))
3486 return INCOMPATIBLE_TYPE_BADNESS
;
3491 switch (TYPE_CODE (arg
))
3495 return rank_one_type (TYPE_FIELD_TYPE (parm
, 0),
3496 TYPE_FIELD_TYPE (arg
, 0), NULL
);
3498 return INCOMPATIBLE_TYPE_BADNESS
;
3501 case TYPE_CODE_VOID
:
3503 return INCOMPATIBLE_TYPE_BADNESS
;
3504 } /* switch (TYPE_CODE (arg)) */
3507 /* End of functions for overload resolution. */
3509 /* Routines to pretty-print types. */
3512 print_bit_vector (B_TYPE
*bits
, int nbits
)
3516 for (bitno
= 0; bitno
< nbits
; bitno
++)
3518 if ((bitno
% 8) == 0)
3520 puts_filtered (" ");
3522 if (B_TST (bits
, bitno
))
3523 printf_filtered (("1"));
3525 printf_filtered (("0"));
3529 /* Note the first arg should be the "this" pointer, we may not want to
3530 include it since we may get into a infinitely recursive
3534 print_args (struct field
*args
, int nargs
, int spaces
)
3540 for (i
= 0; i
< nargs
; i
++)
3542 printfi_filtered (spaces
, "[%d] name '%s'\n", i
,
3543 args
[i
].name
!= NULL
? args
[i
].name
: "<NULL>");
3544 recursive_dump_type (args
[i
].type
, spaces
+ 2);
3550 field_is_static (struct field
*f
)
3552 /* "static" fields are the fields whose location is not relative
3553 to the address of the enclosing struct. It would be nice to
3554 have a dedicated flag that would be set for static fields when
3555 the type is being created. But in practice, checking the field
3556 loc_kind should give us an accurate answer. */
3557 return (FIELD_LOC_KIND (*f
) == FIELD_LOC_KIND_PHYSNAME
3558 || FIELD_LOC_KIND (*f
) == FIELD_LOC_KIND_PHYSADDR
);
3562 dump_fn_fieldlists (struct type
*type
, int spaces
)
3568 printfi_filtered (spaces
, "fn_fieldlists ");
3569 gdb_print_host_address (TYPE_FN_FIELDLISTS (type
), gdb_stdout
);
3570 printf_filtered ("\n");
3571 for (method_idx
= 0; method_idx
< TYPE_NFN_FIELDS (type
); method_idx
++)
3573 f
= TYPE_FN_FIELDLIST1 (type
, method_idx
);
3574 printfi_filtered (spaces
+ 2, "[%d] name '%s' (",
3576 TYPE_FN_FIELDLIST_NAME (type
, method_idx
));
3577 gdb_print_host_address (TYPE_FN_FIELDLIST_NAME (type
, method_idx
),
3579 printf_filtered (_(") length %d\n"),
3580 TYPE_FN_FIELDLIST_LENGTH (type
, method_idx
));
3581 for (overload_idx
= 0;
3582 overload_idx
< TYPE_FN_FIELDLIST_LENGTH (type
, method_idx
);
3585 printfi_filtered (spaces
+ 4, "[%d] physname '%s' (",
3587 TYPE_FN_FIELD_PHYSNAME (f
, overload_idx
));
3588 gdb_print_host_address (TYPE_FN_FIELD_PHYSNAME (f
, overload_idx
),
3590 printf_filtered (")\n");
3591 printfi_filtered (spaces
+ 8, "type ");
3592 gdb_print_host_address (TYPE_FN_FIELD_TYPE (f
, overload_idx
),
3594 printf_filtered ("\n");
3596 recursive_dump_type (TYPE_FN_FIELD_TYPE (f
, overload_idx
),
3599 printfi_filtered (spaces
+ 8, "args ");
3600 gdb_print_host_address (TYPE_FN_FIELD_ARGS (f
, overload_idx
),
3602 printf_filtered ("\n");
3603 print_args (TYPE_FN_FIELD_ARGS (f
, overload_idx
),
3604 TYPE_NFIELDS (TYPE_FN_FIELD_TYPE (f
, overload_idx
)),
3606 printfi_filtered (spaces
+ 8, "fcontext ");
3607 gdb_print_host_address (TYPE_FN_FIELD_FCONTEXT (f
, overload_idx
),
3609 printf_filtered ("\n");
3611 printfi_filtered (spaces
+ 8, "is_const %d\n",
3612 TYPE_FN_FIELD_CONST (f
, overload_idx
));
3613 printfi_filtered (spaces
+ 8, "is_volatile %d\n",
3614 TYPE_FN_FIELD_VOLATILE (f
, overload_idx
));
3615 printfi_filtered (spaces
+ 8, "is_private %d\n",
3616 TYPE_FN_FIELD_PRIVATE (f
, overload_idx
));
3617 printfi_filtered (spaces
+ 8, "is_protected %d\n",
3618 TYPE_FN_FIELD_PROTECTED (f
, overload_idx
));
3619 printfi_filtered (spaces
+ 8, "is_stub %d\n",
3620 TYPE_FN_FIELD_STUB (f
, overload_idx
));
3621 printfi_filtered (spaces
+ 8, "voffset %u\n",
3622 TYPE_FN_FIELD_VOFFSET (f
, overload_idx
));
3628 print_cplus_stuff (struct type
*type
, int spaces
)
3630 printfi_filtered (spaces
, "n_baseclasses %d\n",
3631 TYPE_N_BASECLASSES (type
));
3632 printfi_filtered (spaces
, "nfn_fields %d\n",
3633 TYPE_NFN_FIELDS (type
));
3634 if (TYPE_N_BASECLASSES (type
) > 0)
3636 printfi_filtered (spaces
, "virtual_field_bits (%d bits at *",
3637 TYPE_N_BASECLASSES (type
));
3638 gdb_print_host_address (TYPE_FIELD_VIRTUAL_BITS (type
),
3640 printf_filtered (")");
3642 print_bit_vector (TYPE_FIELD_VIRTUAL_BITS (type
),
3643 TYPE_N_BASECLASSES (type
));
3644 puts_filtered ("\n");
3646 if (TYPE_NFIELDS (type
) > 0)
3648 if (TYPE_FIELD_PRIVATE_BITS (type
) != NULL
)
3650 printfi_filtered (spaces
,
3651 "private_field_bits (%d bits at *",
3652 TYPE_NFIELDS (type
));
3653 gdb_print_host_address (TYPE_FIELD_PRIVATE_BITS (type
),
3655 printf_filtered (")");
3656 print_bit_vector (TYPE_FIELD_PRIVATE_BITS (type
),
3657 TYPE_NFIELDS (type
));
3658 puts_filtered ("\n");
3660 if (TYPE_FIELD_PROTECTED_BITS (type
) != NULL
)
3662 printfi_filtered (spaces
,
3663 "protected_field_bits (%d bits at *",
3664 TYPE_NFIELDS (type
));
3665 gdb_print_host_address (TYPE_FIELD_PROTECTED_BITS (type
),
3667 printf_filtered (")");
3668 print_bit_vector (TYPE_FIELD_PROTECTED_BITS (type
),
3669 TYPE_NFIELDS (type
));
3670 puts_filtered ("\n");
3673 if (TYPE_NFN_FIELDS (type
) > 0)
3675 dump_fn_fieldlists (type
, spaces
);
3679 /* Print the contents of the TYPE's type_specific union, assuming that
3680 its type-specific kind is TYPE_SPECIFIC_GNAT_STUFF. */
3683 print_gnat_stuff (struct type
*type
, int spaces
)
3685 struct type
*descriptive_type
= TYPE_DESCRIPTIVE_TYPE (type
);
3687 recursive_dump_type (descriptive_type
, spaces
+ 2);
3690 static struct obstack dont_print_type_obstack
;
3693 recursive_dump_type (struct type
*type
, int spaces
)
3698 obstack_begin (&dont_print_type_obstack
, 0);
3700 if (TYPE_NFIELDS (type
) > 0
3701 || (HAVE_CPLUS_STRUCT (type
) && TYPE_NFN_FIELDS (type
) > 0))
3703 struct type
**first_dont_print
3704 = (struct type
**) obstack_base (&dont_print_type_obstack
);
3706 int i
= (struct type
**)
3707 obstack_next_free (&dont_print_type_obstack
) - first_dont_print
;
3711 if (type
== first_dont_print
[i
])
3713 printfi_filtered (spaces
, "type node ");
3714 gdb_print_host_address (type
, gdb_stdout
);
3715 printf_filtered (_(" <same as already seen type>\n"));
3720 obstack_ptr_grow (&dont_print_type_obstack
, type
);
3723 printfi_filtered (spaces
, "type node ");
3724 gdb_print_host_address (type
, gdb_stdout
);
3725 printf_filtered ("\n");
3726 printfi_filtered (spaces
, "name '%s' (",
3727 TYPE_NAME (type
) ? TYPE_NAME (type
) : "<NULL>");
3728 gdb_print_host_address (TYPE_NAME (type
), gdb_stdout
);
3729 printf_filtered (")\n");
3730 printfi_filtered (spaces
, "tagname '%s' (",
3731 TYPE_TAG_NAME (type
) ? TYPE_TAG_NAME (type
) : "<NULL>");
3732 gdb_print_host_address (TYPE_TAG_NAME (type
), gdb_stdout
);
3733 printf_filtered (")\n");
3734 printfi_filtered (spaces
, "code 0x%x ", TYPE_CODE (type
));
3735 switch (TYPE_CODE (type
))
3737 case TYPE_CODE_UNDEF
:
3738 printf_filtered ("(TYPE_CODE_UNDEF)");
3741 printf_filtered ("(TYPE_CODE_PTR)");
3743 case TYPE_CODE_ARRAY
:
3744 printf_filtered ("(TYPE_CODE_ARRAY)");
3746 case TYPE_CODE_STRUCT
:
3747 printf_filtered ("(TYPE_CODE_STRUCT)");
3749 case TYPE_CODE_UNION
:
3750 printf_filtered ("(TYPE_CODE_UNION)");
3752 case TYPE_CODE_ENUM
:
3753 printf_filtered ("(TYPE_CODE_ENUM)");
3755 case TYPE_CODE_FLAGS
:
3756 printf_filtered ("(TYPE_CODE_FLAGS)");
3758 case TYPE_CODE_FUNC
:
3759 printf_filtered ("(TYPE_CODE_FUNC)");
3762 printf_filtered ("(TYPE_CODE_INT)");
3765 printf_filtered ("(TYPE_CODE_FLT)");
3767 case TYPE_CODE_VOID
:
3768 printf_filtered ("(TYPE_CODE_VOID)");
3771 printf_filtered ("(TYPE_CODE_SET)");
3773 case TYPE_CODE_RANGE
:
3774 printf_filtered ("(TYPE_CODE_RANGE)");
3776 case TYPE_CODE_STRING
:
3777 printf_filtered ("(TYPE_CODE_STRING)");
3779 case TYPE_CODE_ERROR
:
3780 printf_filtered ("(TYPE_CODE_ERROR)");
3782 case TYPE_CODE_MEMBERPTR
:
3783 printf_filtered ("(TYPE_CODE_MEMBERPTR)");
3785 case TYPE_CODE_METHODPTR
:
3786 printf_filtered ("(TYPE_CODE_METHODPTR)");
3788 case TYPE_CODE_METHOD
:
3789 printf_filtered ("(TYPE_CODE_METHOD)");
3792 printf_filtered ("(TYPE_CODE_REF)");
3794 case TYPE_CODE_CHAR
:
3795 printf_filtered ("(TYPE_CODE_CHAR)");
3797 case TYPE_CODE_BOOL
:
3798 printf_filtered ("(TYPE_CODE_BOOL)");
3800 case TYPE_CODE_COMPLEX
:
3801 printf_filtered ("(TYPE_CODE_COMPLEX)");
3803 case TYPE_CODE_TYPEDEF
:
3804 printf_filtered ("(TYPE_CODE_TYPEDEF)");
3806 case TYPE_CODE_NAMESPACE
:
3807 printf_filtered ("(TYPE_CODE_NAMESPACE)");
3810 printf_filtered ("(UNKNOWN TYPE CODE)");
3813 puts_filtered ("\n");
3814 printfi_filtered (spaces
, "length %d\n", TYPE_LENGTH (type
));
3815 if (TYPE_OBJFILE_OWNED (type
))
3817 printfi_filtered (spaces
, "objfile ");
3818 gdb_print_host_address (TYPE_OWNER (type
).objfile
, gdb_stdout
);
3822 printfi_filtered (spaces
, "gdbarch ");
3823 gdb_print_host_address (TYPE_OWNER (type
).gdbarch
, gdb_stdout
);
3825 printf_filtered ("\n");
3826 printfi_filtered (spaces
, "target_type ");
3827 gdb_print_host_address (TYPE_TARGET_TYPE (type
), gdb_stdout
);
3828 printf_filtered ("\n");
3829 if (TYPE_TARGET_TYPE (type
) != NULL
)
3831 recursive_dump_type (TYPE_TARGET_TYPE (type
), spaces
+ 2);
3833 printfi_filtered (spaces
, "pointer_type ");
3834 gdb_print_host_address (TYPE_POINTER_TYPE (type
), gdb_stdout
);
3835 printf_filtered ("\n");
3836 printfi_filtered (spaces
, "reference_type ");
3837 gdb_print_host_address (TYPE_REFERENCE_TYPE (type
), gdb_stdout
);
3838 printf_filtered ("\n");
3839 printfi_filtered (spaces
, "type_chain ");
3840 gdb_print_host_address (TYPE_CHAIN (type
), gdb_stdout
);
3841 printf_filtered ("\n");
3842 printfi_filtered (spaces
, "instance_flags 0x%x",
3843 TYPE_INSTANCE_FLAGS (type
));
3844 if (TYPE_CONST (type
))
3846 puts_filtered (" TYPE_FLAG_CONST");
3848 if (TYPE_VOLATILE (type
))
3850 puts_filtered (" TYPE_FLAG_VOLATILE");
3852 if (TYPE_CODE_SPACE (type
))
3854 puts_filtered (" TYPE_FLAG_CODE_SPACE");
3856 if (TYPE_DATA_SPACE (type
))
3858 puts_filtered (" TYPE_FLAG_DATA_SPACE");
3860 if (TYPE_ADDRESS_CLASS_1 (type
))
3862 puts_filtered (" TYPE_FLAG_ADDRESS_CLASS_1");
3864 if (TYPE_ADDRESS_CLASS_2 (type
))
3866 puts_filtered (" TYPE_FLAG_ADDRESS_CLASS_2");
3868 if (TYPE_RESTRICT (type
))
3870 puts_filtered (" TYPE_FLAG_RESTRICT");
3872 puts_filtered ("\n");
3874 printfi_filtered (spaces
, "flags");
3875 if (TYPE_UNSIGNED (type
))
3877 puts_filtered (" TYPE_FLAG_UNSIGNED");
3879 if (TYPE_NOSIGN (type
))
3881 puts_filtered (" TYPE_FLAG_NOSIGN");
3883 if (TYPE_STUB (type
))
3885 puts_filtered (" TYPE_FLAG_STUB");
3887 if (TYPE_TARGET_STUB (type
))
3889 puts_filtered (" TYPE_FLAG_TARGET_STUB");
3891 if (TYPE_STATIC (type
))
3893 puts_filtered (" TYPE_FLAG_STATIC");
3895 if (TYPE_PROTOTYPED (type
))
3897 puts_filtered (" TYPE_FLAG_PROTOTYPED");
3899 if (TYPE_INCOMPLETE (type
))
3901 puts_filtered (" TYPE_FLAG_INCOMPLETE");
3903 if (TYPE_VARARGS (type
))
3905 puts_filtered (" TYPE_FLAG_VARARGS");
3907 /* This is used for things like AltiVec registers on ppc. Gcc emits
3908 an attribute for the array type, which tells whether or not we
3909 have a vector, instead of a regular array. */
3910 if (TYPE_VECTOR (type
))
3912 puts_filtered (" TYPE_FLAG_VECTOR");
3914 if (TYPE_FIXED_INSTANCE (type
))
3916 puts_filtered (" TYPE_FIXED_INSTANCE");
3918 if (TYPE_STUB_SUPPORTED (type
))
3920 puts_filtered (" TYPE_STUB_SUPPORTED");
3922 if (TYPE_NOTTEXT (type
))
3924 puts_filtered (" TYPE_NOTTEXT");
3926 puts_filtered ("\n");
3927 printfi_filtered (spaces
, "nfields %d ", TYPE_NFIELDS (type
));
3928 gdb_print_host_address (TYPE_FIELDS (type
), gdb_stdout
);
3929 puts_filtered ("\n");
3930 for (idx
= 0; idx
< TYPE_NFIELDS (type
); idx
++)
3932 if (TYPE_CODE (type
) == TYPE_CODE_ENUM
)
3933 printfi_filtered (spaces
+ 2,
3934 "[%d] enumval %s type ",
3935 idx
, plongest (TYPE_FIELD_ENUMVAL (type
, idx
)));
3937 printfi_filtered (spaces
+ 2,
3938 "[%d] bitpos %d bitsize %d type ",
3939 idx
, TYPE_FIELD_BITPOS (type
, idx
),
3940 TYPE_FIELD_BITSIZE (type
, idx
));
3941 gdb_print_host_address (TYPE_FIELD_TYPE (type
, idx
), gdb_stdout
);
3942 printf_filtered (" name '%s' (",
3943 TYPE_FIELD_NAME (type
, idx
) != NULL
3944 ? TYPE_FIELD_NAME (type
, idx
)
3946 gdb_print_host_address (TYPE_FIELD_NAME (type
, idx
), gdb_stdout
);
3947 printf_filtered (")\n");
3948 if (TYPE_FIELD_TYPE (type
, idx
) != NULL
)
3950 recursive_dump_type (TYPE_FIELD_TYPE (type
, idx
), spaces
+ 4);
3953 if (TYPE_CODE (type
) == TYPE_CODE_RANGE
)
3955 printfi_filtered (spaces
, "low %s%s high %s%s\n",
3956 plongest (TYPE_LOW_BOUND (type
)),
3957 TYPE_LOW_BOUND_UNDEFINED (type
) ? " (undefined)" : "",
3958 plongest (TYPE_HIGH_BOUND (type
)),
3959 TYPE_HIGH_BOUND_UNDEFINED (type
)
3960 ? " (undefined)" : "");
3962 printfi_filtered (spaces
, "vptr_basetype ");
3963 gdb_print_host_address (TYPE_VPTR_BASETYPE (type
), gdb_stdout
);
3964 puts_filtered ("\n");
3965 if (TYPE_VPTR_BASETYPE (type
) != NULL
)
3967 recursive_dump_type (TYPE_VPTR_BASETYPE (type
), spaces
+ 2);
3969 printfi_filtered (spaces
, "vptr_fieldno %d\n",
3970 TYPE_VPTR_FIELDNO (type
));
3972 switch (TYPE_SPECIFIC_FIELD (type
))
3974 case TYPE_SPECIFIC_CPLUS_STUFF
:
3975 printfi_filtered (spaces
, "cplus_stuff ");
3976 gdb_print_host_address (TYPE_CPLUS_SPECIFIC (type
),
3978 puts_filtered ("\n");
3979 print_cplus_stuff (type
, spaces
);
3982 case TYPE_SPECIFIC_GNAT_STUFF
:
3983 printfi_filtered (spaces
, "gnat_stuff ");
3984 gdb_print_host_address (TYPE_GNAT_SPECIFIC (type
), gdb_stdout
);
3985 puts_filtered ("\n");
3986 print_gnat_stuff (type
, spaces
);
3989 case TYPE_SPECIFIC_FLOATFORMAT
:
3990 printfi_filtered (spaces
, "floatformat ");
3991 if (TYPE_FLOATFORMAT (type
) == NULL
)
3992 puts_filtered ("(null)");
3995 puts_filtered ("{ ");
3996 if (TYPE_FLOATFORMAT (type
)[0] == NULL
3997 || TYPE_FLOATFORMAT (type
)[0]->name
== NULL
)
3998 puts_filtered ("(null)");
4000 puts_filtered (TYPE_FLOATFORMAT (type
)[0]->name
);
4002 puts_filtered (", ");
4003 if (TYPE_FLOATFORMAT (type
)[1] == NULL
4004 || TYPE_FLOATFORMAT (type
)[1]->name
== NULL
)
4005 puts_filtered ("(null)");
4007 puts_filtered (TYPE_FLOATFORMAT (type
)[1]->name
);
4009 puts_filtered (" }");
4011 puts_filtered ("\n");
4014 case TYPE_SPECIFIC_FUNC
:
4015 printfi_filtered (spaces
, "calling_convention %d\n",
4016 TYPE_CALLING_CONVENTION (type
));
4017 /* tail_call_list is not printed. */
4022 obstack_free (&dont_print_type_obstack
, NULL
);
4025 /* Trivial helpers for the libiberty hash table, for mapping one
4030 struct type
*old
, *new;
4034 type_pair_hash (const void *item
)
4036 const struct type_pair
*pair
= item
;
4038 return htab_hash_pointer (pair
->old
);
4042 type_pair_eq (const void *item_lhs
, const void *item_rhs
)
4044 const struct type_pair
*lhs
= item_lhs
, *rhs
= item_rhs
;
4046 return lhs
->old
== rhs
->old
;
4049 /* Allocate the hash table used by copy_type_recursive to walk
4050 types without duplicates. We use OBJFILE's obstack, because
4051 OBJFILE is about to be deleted. */
4054 create_copied_types_hash (struct objfile
*objfile
)
4056 return htab_create_alloc_ex (1, type_pair_hash
, type_pair_eq
,
4057 NULL
, &objfile
->objfile_obstack
,
4058 hashtab_obstack_allocate
,
4059 dummy_obstack_deallocate
);
4062 /* Recursively copy (deep copy) TYPE, if it is associated with
4063 OBJFILE. Return a new type allocated using malloc, a saved type if
4064 we have already visited TYPE (using COPIED_TYPES), or TYPE if it is
4065 not associated with OBJFILE. */
4068 copy_type_recursive (struct objfile
*objfile
,
4070 htab_t copied_types
)
4072 struct type_pair
*stored
, pair
;
4074 struct type
*new_type
;
4076 if (! TYPE_OBJFILE_OWNED (type
))
4079 /* This type shouldn't be pointing to any types in other objfiles;
4080 if it did, the type might disappear unexpectedly. */
4081 gdb_assert (TYPE_OBJFILE (type
) == objfile
);
4084 slot
= htab_find_slot (copied_types
, &pair
, INSERT
);
4086 return ((struct type_pair
*) *slot
)->new;
4088 new_type
= alloc_type_arch (get_type_arch (type
));
4090 /* We must add the new type to the hash table immediately, in case
4091 we encounter this type again during a recursive call below. */
4093 = obstack_alloc (&objfile
->objfile_obstack
, sizeof (struct type_pair
));
4095 stored
->new = new_type
;
4098 /* Copy the common fields of types. For the main type, we simply
4099 copy the entire thing and then update specific fields as needed. */
4100 *TYPE_MAIN_TYPE (new_type
) = *TYPE_MAIN_TYPE (type
);
4101 TYPE_OBJFILE_OWNED (new_type
) = 0;
4102 TYPE_OWNER (new_type
).gdbarch
= get_type_arch (type
);
4104 if (TYPE_NAME (type
))
4105 TYPE_NAME (new_type
) = xstrdup (TYPE_NAME (type
));
4106 if (TYPE_TAG_NAME (type
))
4107 TYPE_TAG_NAME (new_type
) = xstrdup (TYPE_TAG_NAME (type
));
4109 TYPE_INSTANCE_FLAGS (new_type
) = TYPE_INSTANCE_FLAGS (type
);
4110 TYPE_LENGTH (new_type
) = TYPE_LENGTH (type
);
4112 /* Copy the fields. */
4113 if (TYPE_NFIELDS (type
))
4117 nfields
= TYPE_NFIELDS (type
);
4118 TYPE_FIELDS (new_type
) = XCNEWVEC (struct field
, nfields
);
4119 for (i
= 0; i
< nfields
; i
++)
4121 TYPE_FIELD_ARTIFICIAL (new_type
, i
) =
4122 TYPE_FIELD_ARTIFICIAL (type
, i
);
4123 TYPE_FIELD_BITSIZE (new_type
, i
) = TYPE_FIELD_BITSIZE (type
, i
);
4124 if (TYPE_FIELD_TYPE (type
, i
))
4125 TYPE_FIELD_TYPE (new_type
, i
)
4126 = copy_type_recursive (objfile
, TYPE_FIELD_TYPE (type
, i
),
4128 if (TYPE_FIELD_NAME (type
, i
))
4129 TYPE_FIELD_NAME (new_type
, i
) =
4130 xstrdup (TYPE_FIELD_NAME (type
, i
));
4131 switch (TYPE_FIELD_LOC_KIND (type
, i
))
4133 case FIELD_LOC_KIND_BITPOS
:
4134 SET_FIELD_BITPOS (TYPE_FIELD (new_type
, i
),
4135 TYPE_FIELD_BITPOS (type
, i
));
4137 case FIELD_LOC_KIND_ENUMVAL
:
4138 SET_FIELD_ENUMVAL (TYPE_FIELD (new_type
, i
),
4139 TYPE_FIELD_ENUMVAL (type
, i
));
4141 case FIELD_LOC_KIND_PHYSADDR
:
4142 SET_FIELD_PHYSADDR (TYPE_FIELD (new_type
, i
),
4143 TYPE_FIELD_STATIC_PHYSADDR (type
, i
));
4145 case FIELD_LOC_KIND_PHYSNAME
:
4146 SET_FIELD_PHYSNAME (TYPE_FIELD (new_type
, i
),
4147 xstrdup (TYPE_FIELD_STATIC_PHYSNAME (type
,
4151 internal_error (__FILE__
, __LINE__
,
4152 _("Unexpected type field location kind: %d"),
4153 TYPE_FIELD_LOC_KIND (type
, i
));
4158 /* For range types, copy the bounds information. */
4159 if (TYPE_CODE (type
) == TYPE_CODE_RANGE
)
4161 TYPE_RANGE_DATA (new_type
) = xmalloc (sizeof (struct range_bounds
));
4162 *TYPE_RANGE_DATA (new_type
) = *TYPE_RANGE_DATA (type
);
4165 /* Copy the data location information. */
4166 if (TYPE_DATA_LOCATION (type
) != NULL
)
4168 TYPE_DATA_LOCATION (new_type
)
4169 = TYPE_ALLOC (new_type
, sizeof (struct dynamic_prop
));
4170 memcpy (TYPE_DATA_LOCATION (new_type
), TYPE_DATA_LOCATION (type
),
4171 sizeof (struct dynamic_prop
));
4174 /* Copy pointers to other types. */
4175 if (TYPE_TARGET_TYPE (type
))
4176 TYPE_TARGET_TYPE (new_type
) =
4177 copy_type_recursive (objfile
,
4178 TYPE_TARGET_TYPE (type
),
4180 if (TYPE_VPTR_BASETYPE (type
))
4181 TYPE_VPTR_BASETYPE (new_type
) =
4182 copy_type_recursive (objfile
,
4183 TYPE_VPTR_BASETYPE (type
),
4185 /* Maybe copy the type_specific bits.
4187 NOTE drow/2005-12-09: We do not copy the C++-specific bits like
4188 base classes and methods. There's no fundamental reason why we
4189 can't, but at the moment it is not needed. */
4191 if (TYPE_CODE (type
) == TYPE_CODE_FLT
)
4192 TYPE_FLOATFORMAT (new_type
) = TYPE_FLOATFORMAT (type
);
4193 else if (TYPE_CODE (type
) == TYPE_CODE_STRUCT
4194 || TYPE_CODE (type
) == TYPE_CODE_UNION
4195 || TYPE_CODE (type
) == TYPE_CODE_NAMESPACE
)
4196 INIT_CPLUS_SPECIFIC (new_type
);
4201 /* Make a copy of the given TYPE, except that the pointer & reference
4202 types are not preserved.
4204 This function assumes that the given type has an associated objfile.
4205 This objfile is used to allocate the new type. */
4208 copy_type (const struct type
*type
)
4210 struct type
*new_type
;
4212 gdb_assert (TYPE_OBJFILE_OWNED (type
));
4214 new_type
= alloc_type_copy (type
);
4215 TYPE_INSTANCE_FLAGS (new_type
) = TYPE_INSTANCE_FLAGS (type
);
4216 TYPE_LENGTH (new_type
) = TYPE_LENGTH (type
);
4217 memcpy (TYPE_MAIN_TYPE (new_type
), TYPE_MAIN_TYPE (type
),
4218 sizeof (struct main_type
));
4219 if (TYPE_DATA_LOCATION (type
) != NULL
)
4221 TYPE_DATA_LOCATION (new_type
)
4222 = TYPE_ALLOC (new_type
, sizeof (struct dynamic_prop
));
4223 memcpy (TYPE_DATA_LOCATION (new_type
), TYPE_DATA_LOCATION (type
),
4224 sizeof (struct dynamic_prop
));
4230 /* Helper functions to initialize architecture-specific types. */
4232 /* Allocate a type structure associated with GDBARCH and set its
4233 CODE, LENGTH, and NAME fields. */
4236 arch_type (struct gdbarch
*gdbarch
,
4237 enum type_code code
, int length
, char *name
)
4241 type
= alloc_type_arch (gdbarch
);
4242 TYPE_CODE (type
) = code
;
4243 TYPE_LENGTH (type
) = length
;
4246 TYPE_NAME (type
) = xstrdup (name
);
4251 /* Allocate a TYPE_CODE_INT type structure associated with GDBARCH.
4252 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
4253 the type's TYPE_UNSIGNED flag. NAME is the type name. */
4256 arch_integer_type (struct gdbarch
*gdbarch
,
4257 int bit
, int unsigned_p
, char *name
)
4261 t
= arch_type (gdbarch
, TYPE_CODE_INT
, bit
/ TARGET_CHAR_BIT
, name
);
4263 TYPE_UNSIGNED (t
) = 1;
4264 if (name
&& strcmp (name
, "char") == 0)
4265 TYPE_NOSIGN (t
) = 1;
4270 /* Allocate a TYPE_CODE_CHAR type structure associated with GDBARCH.
4271 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
4272 the type's TYPE_UNSIGNED flag. NAME is the type name. */
4275 arch_character_type (struct gdbarch
*gdbarch
,
4276 int bit
, int unsigned_p
, char *name
)
4280 t
= arch_type (gdbarch
, TYPE_CODE_CHAR
, bit
/ TARGET_CHAR_BIT
, name
);
4282 TYPE_UNSIGNED (t
) = 1;
4287 /* Allocate a TYPE_CODE_BOOL type structure associated with GDBARCH.
4288 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
4289 the type's TYPE_UNSIGNED flag. NAME is the type name. */
4292 arch_boolean_type (struct gdbarch
*gdbarch
,
4293 int bit
, int unsigned_p
, char *name
)
4297 t
= arch_type (gdbarch
, TYPE_CODE_BOOL
, bit
/ TARGET_CHAR_BIT
, name
);
4299 TYPE_UNSIGNED (t
) = 1;
4304 /* Allocate a TYPE_CODE_FLT type structure associated with GDBARCH.
4305 BIT is the type size in bits; if BIT equals -1, the size is
4306 determined by the floatformat. NAME is the type name. Set the
4307 TYPE_FLOATFORMAT from FLOATFORMATS. */
4310 arch_float_type (struct gdbarch
*gdbarch
,
4311 int bit
, char *name
, const struct floatformat
**floatformats
)
4317 gdb_assert (floatformats
!= NULL
);
4318 gdb_assert (floatformats
[0] != NULL
&& floatformats
[1] != NULL
);
4319 bit
= floatformats
[0]->totalsize
;
4321 gdb_assert (bit
>= 0);
4323 t
= arch_type (gdbarch
, TYPE_CODE_FLT
, bit
/ TARGET_CHAR_BIT
, name
);
4324 TYPE_FLOATFORMAT (t
) = floatformats
;
4328 /* Allocate a TYPE_CODE_COMPLEX type structure associated with GDBARCH.
4329 NAME is the type name. TARGET_TYPE is the component float type. */
4332 arch_complex_type (struct gdbarch
*gdbarch
,
4333 char *name
, struct type
*target_type
)
4337 t
= arch_type (gdbarch
, TYPE_CODE_COMPLEX
,
4338 2 * TYPE_LENGTH (target_type
), name
);
4339 TYPE_TARGET_TYPE (t
) = target_type
;
4343 /* Allocate a TYPE_CODE_FLAGS type structure associated with GDBARCH.
4344 NAME is the type name. LENGTH is the size of the flag word in bytes. */
4347 arch_flags_type (struct gdbarch
*gdbarch
, char *name
, int length
)
4349 int nfields
= length
* TARGET_CHAR_BIT
;
4352 type
= arch_type (gdbarch
, TYPE_CODE_FLAGS
, length
, name
);
4353 TYPE_UNSIGNED (type
) = 1;
4354 TYPE_NFIELDS (type
) = nfields
;
4355 TYPE_FIELDS (type
) = TYPE_ZALLOC (type
, nfields
* sizeof (struct field
));
4360 /* Add field to TYPE_CODE_FLAGS type TYPE to indicate the bit at
4361 position BITPOS is called NAME. */
4364 append_flags_type_flag (struct type
*type
, int bitpos
, char *name
)
4366 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_FLAGS
);
4367 gdb_assert (bitpos
< TYPE_NFIELDS (type
));
4368 gdb_assert (bitpos
>= 0);
4372 TYPE_FIELD_NAME (type
, bitpos
) = xstrdup (name
);
4373 SET_FIELD_BITPOS (TYPE_FIELD (type
, bitpos
), bitpos
);
4377 /* Don't show this field to the user. */
4378 SET_FIELD_BITPOS (TYPE_FIELD (type
, bitpos
), -1);
4382 /* Allocate a TYPE_CODE_STRUCT or TYPE_CODE_UNION type structure (as
4383 specified by CODE) associated with GDBARCH. NAME is the type name. */
4386 arch_composite_type (struct gdbarch
*gdbarch
, char *name
, enum type_code code
)
4390 gdb_assert (code
== TYPE_CODE_STRUCT
|| code
== TYPE_CODE_UNION
);
4391 t
= arch_type (gdbarch
, code
, 0, NULL
);
4392 TYPE_TAG_NAME (t
) = name
;
4393 INIT_CPLUS_SPECIFIC (t
);
4397 /* Add new field with name NAME and type FIELD to composite type T.
4398 Do not set the field's position or adjust the type's length;
4399 the caller should do so. Return the new field. */
4402 append_composite_type_field_raw (struct type
*t
, char *name
,
4407 TYPE_NFIELDS (t
) = TYPE_NFIELDS (t
) + 1;
4408 TYPE_FIELDS (t
) = xrealloc (TYPE_FIELDS (t
),
4409 sizeof (struct field
) * TYPE_NFIELDS (t
));
4410 f
= &(TYPE_FIELDS (t
)[TYPE_NFIELDS (t
) - 1]);
4411 memset (f
, 0, sizeof f
[0]);
4412 FIELD_TYPE (f
[0]) = field
;
4413 FIELD_NAME (f
[0]) = name
;
4417 /* Add new field with name NAME and type FIELD to composite type T.
4418 ALIGNMENT (if non-zero) specifies the minimum field alignment. */
4421 append_composite_type_field_aligned (struct type
*t
, char *name
,
4422 struct type
*field
, int alignment
)
4424 struct field
*f
= append_composite_type_field_raw (t
, name
, field
);
4426 if (TYPE_CODE (t
) == TYPE_CODE_UNION
)
4428 if (TYPE_LENGTH (t
) < TYPE_LENGTH (field
))
4429 TYPE_LENGTH (t
) = TYPE_LENGTH (field
);
4431 else if (TYPE_CODE (t
) == TYPE_CODE_STRUCT
)
4433 TYPE_LENGTH (t
) = TYPE_LENGTH (t
) + TYPE_LENGTH (field
);
4434 if (TYPE_NFIELDS (t
) > 1)
4436 SET_FIELD_BITPOS (f
[0],
4437 (FIELD_BITPOS (f
[-1])
4438 + (TYPE_LENGTH (FIELD_TYPE (f
[-1]))
4439 * TARGET_CHAR_BIT
)));
4445 alignment
*= TARGET_CHAR_BIT
;
4446 left
= FIELD_BITPOS (f
[0]) % alignment
;
4450 SET_FIELD_BITPOS (f
[0], FIELD_BITPOS (f
[0]) + (alignment
- left
));
4451 TYPE_LENGTH (t
) += (alignment
- left
) / TARGET_CHAR_BIT
;
4458 /* Add new field with name NAME and type FIELD to composite type T. */
4461 append_composite_type_field (struct type
*t
, char *name
,
4464 append_composite_type_field_aligned (t
, name
, field
, 0);
4467 static struct gdbarch_data
*gdbtypes_data
;
4469 const struct builtin_type
*
4470 builtin_type (struct gdbarch
*gdbarch
)
4472 return gdbarch_data (gdbarch
, gdbtypes_data
);
4476 gdbtypes_post_init (struct gdbarch
*gdbarch
)
4478 struct builtin_type
*builtin_type
4479 = GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct builtin_type
);
4482 builtin_type
->builtin_void
4483 = arch_type (gdbarch
, TYPE_CODE_VOID
, 1, "void");
4484 builtin_type
->builtin_char
4485 = arch_integer_type (gdbarch
, TARGET_CHAR_BIT
,
4486 !gdbarch_char_signed (gdbarch
), "char");
4487 builtin_type
->builtin_signed_char
4488 = arch_integer_type (gdbarch
, TARGET_CHAR_BIT
,
4490 builtin_type
->builtin_unsigned_char
4491 = arch_integer_type (gdbarch
, TARGET_CHAR_BIT
,
4492 1, "unsigned char");
4493 builtin_type
->builtin_short
4494 = arch_integer_type (gdbarch
, gdbarch_short_bit (gdbarch
),
4496 builtin_type
->builtin_unsigned_short
4497 = arch_integer_type (gdbarch
, gdbarch_short_bit (gdbarch
),
4498 1, "unsigned short");
4499 builtin_type
->builtin_int
4500 = arch_integer_type (gdbarch
, gdbarch_int_bit (gdbarch
),
4502 builtin_type
->builtin_unsigned_int
4503 = arch_integer_type (gdbarch
, gdbarch_int_bit (gdbarch
),
4505 builtin_type
->builtin_long
4506 = arch_integer_type (gdbarch
, gdbarch_long_bit (gdbarch
),
4508 builtin_type
->builtin_unsigned_long
4509 = arch_integer_type (gdbarch
, gdbarch_long_bit (gdbarch
),
4510 1, "unsigned long");
4511 builtin_type
->builtin_long_long
4512 = arch_integer_type (gdbarch
, gdbarch_long_long_bit (gdbarch
),
4514 builtin_type
->builtin_unsigned_long_long
4515 = arch_integer_type (gdbarch
, gdbarch_long_long_bit (gdbarch
),
4516 1, "unsigned long long");
4517 builtin_type
->builtin_float
4518 = arch_float_type (gdbarch
, gdbarch_float_bit (gdbarch
),
4519 "float", gdbarch_float_format (gdbarch
));
4520 builtin_type
->builtin_double
4521 = arch_float_type (gdbarch
, gdbarch_double_bit (gdbarch
),
4522 "double", gdbarch_double_format (gdbarch
));
4523 builtin_type
->builtin_long_double
4524 = arch_float_type (gdbarch
, gdbarch_long_double_bit (gdbarch
),
4525 "long double", gdbarch_long_double_format (gdbarch
));
4526 builtin_type
->builtin_complex
4527 = arch_complex_type (gdbarch
, "complex",
4528 builtin_type
->builtin_float
);
4529 builtin_type
->builtin_double_complex
4530 = arch_complex_type (gdbarch
, "double complex",
4531 builtin_type
->builtin_double
);
4532 builtin_type
->builtin_string
4533 = arch_type (gdbarch
, TYPE_CODE_STRING
, 1, "string");
4534 builtin_type
->builtin_bool
4535 = arch_type (gdbarch
, TYPE_CODE_BOOL
, 1, "bool");
4537 /* The following three are about decimal floating point types, which
4538 are 32-bits, 64-bits and 128-bits respectively. */
4539 builtin_type
->builtin_decfloat
4540 = arch_type (gdbarch
, TYPE_CODE_DECFLOAT
, 32 / 8, "_Decimal32");
4541 builtin_type
->builtin_decdouble
4542 = arch_type (gdbarch
, TYPE_CODE_DECFLOAT
, 64 / 8, "_Decimal64");
4543 builtin_type
->builtin_declong
4544 = arch_type (gdbarch
, TYPE_CODE_DECFLOAT
, 128 / 8, "_Decimal128");
4546 /* "True" character types. */
4547 builtin_type
->builtin_true_char
4548 = arch_character_type (gdbarch
, TARGET_CHAR_BIT
, 0, "true character");
4549 builtin_type
->builtin_true_unsigned_char
4550 = arch_character_type (gdbarch
, TARGET_CHAR_BIT
, 1, "true character");
4552 /* Fixed-size integer types. */
4553 builtin_type
->builtin_int0
4554 = arch_integer_type (gdbarch
, 0, 0, "int0_t");
4555 builtin_type
->builtin_int8
4556 = arch_integer_type (gdbarch
, 8, 0, "int8_t");
4557 builtin_type
->builtin_uint8
4558 = arch_integer_type (gdbarch
, 8, 1, "uint8_t");
4559 builtin_type
->builtin_int16
4560 = arch_integer_type (gdbarch
, 16, 0, "int16_t");
4561 builtin_type
->builtin_uint16
4562 = arch_integer_type (gdbarch
, 16, 1, "uint16_t");
4563 builtin_type
->builtin_int32
4564 = arch_integer_type (gdbarch
, 32, 0, "int32_t");
4565 builtin_type
->builtin_uint32
4566 = arch_integer_type (gdbarch
, 32, 1, "uint32_t");
4567 builtin_type
->builtin_int64
4568 = arch_integer_type (gdbarch
, 64, 0, "int64_t");
4569 builtin_type
->builtin_uint64
4570 = arch_integer_type (gdbarch
, 64, 1, "uint64_t");
4571 builtin_type
->builtin_int128
4572 = arch_integer_type (gdbarch
, 128, 0, "int128_t");
4573 builtin_type
->builtin_uint128
4574 = arch_integer_type (gdbarch
, 128, 1, "uint128_t");
4575 TYPE_INSTANCE_FLAGS (builtin_type
->builtin_int8
) |=
4576 TYPE_INSTANCE_FLAG_NOTTEXT
;
4577 TYPE_INSTANCE_FLAGS (builtin_type
->builtin_uint8
) |=
4578 TYPE_INSTANCE_FLAG_NOTTEXT
;
4580 /* Wide character types. */
4581 builtin_type
->builtin_char16
4582 = arch_integer_type (gdbarch
, 16, 0, "char16_t");
4583 builtin_type
->builtin_char32
4584 = arch_integer_type (gdbarch
, 32, 0, "char32_t");
4587 /* Default data/code pointer types. */
4588 builtin_type
->builtin_data_ptr
4589 = lookup_pointer_type (builtin_type
->builtin_void
);
4590 builtin_type
->builtin_func_ptr
4591 = lookup_pointer_type (lookup_function_type (builtin_type
->builtin_void
));
4592 builtin_type
->builtin_func_func
4593 = lookup_function_type (builtin_type
->builtin_func_ptr
);
4595 /* This type represents a GDB internal function. */
4596 builtin_type
->internal_fn
4597 = arch_type (gdbarch
, TYPE_CODE_INTERNAL_FUNCTION
, 0,
4598 "<internal function>");
4600 /* This type represents an xmethod. */
4601 builtin_type
->xmethod
4602 = arch_type (gdbarch
, TYPE_CODE_XMETHOD
, 0, "<xmethod>");
4604 return builtin_type
;
4607 /* This set of objfile-based types is intended to be used by symbol
4608 readers as basic types. */
4610 static const struct objfile_data
*objfile_type_data
;
4612 const struct objfile_type
*
4613 objfile_type (struct objfile
*objfile
)
4615 struct gdbarch
*gdbarch
;
4616 struct objfile_type
*objfile_type
4617 = objfile_data (objfile
, objfile_type_data
);
4620 return objfile_type
;
4622 objfile_type
= OBSTACK_CALLOC (&objfile
->objfile_obstack
,
4623 1, struct objfile_type
);
4625 /* Use the objfile architecture to determine basic type properties. */
4626 gdbarch
= get_objfile_arch (objfile
);
4629 objfile_type
->builtin_void
4630 = init_type (TYPE_CODE_VOID
, 1,
4634 objfile_type
->builtin_char
4635 = init_type (TYPE_CODE_INT
, TARGET_CHAR_BIT
/ TARGET_CHAR_BIT
,
4637 | (gdbarch_char_signed (gdbarch
) ? 0 : TYPE_FLAG_UNSIGNED
)),
4639 objfile_type
->builtin_signed_char
4640 = init_type (TYPE_CODE_INT
, TARGET_CHAR_BIT
/ TARGET_CHAR_BIT
,
4642 "signed char", objfile
);
4643 objfile_type
->builtin_unsigned_char
4644 = init_type (TYPE_CODE_INT
, TARGET_CHAR_BIT
/ TARGET_CHAR_BIT
,
4646 "unsigned char", objfile
);
4647 objfile_type
->builtin_short
4648 = init_type (TYPE_CODE_INT
,
4649 gdbarch_short_bit (gdbarch
) / TARGET_CHAR_BIT
,
4650 0, "short", objfile
);
4651 objfile_type
->builtin_unsigned_short
4652 = init_type (TYPE_CODE_INT
,
4653 gdbarch_short_bit (gdbarch
) / TARGET_CHAR_BIT
,
4654 TYPE_FLAG_UNSIGNED
, "unsigned short", objfile
);
4655 objfile_type
->builtin_int
4656 = init_type (TYPE_CODE_INT
,
4657 gdbarch_int_bit (gdbarch
) / TARGET_CHAR_BIT
,
4659 objfile_type
->builtin_unsigned_int
4660 = init_type (TYPE_CODE_INT
,
4661 gdbarch_int_bit (gdbarch
) / TARGET_CHAR_BIT
,
4662 TYPE_FLAG_UNSIGNED
, "unsigned int", objfile
);
4663 objfile_type
->builtin_long
4664 = init_type (TYPE_CODE_INT
,
4665 gdbarch_long_bit (gdbarch
) / TARGET_CHAR_BIT
,
4666 0, "long", objfile
);
4667 objfile_type
->builtin_unsigned_long
4668 = init_type (TYPE_CODE_INT
,
4669 gdbarch_long_bit (gdbarch
) / TARGET_CHAR_BIT
,
4670 TYPE_FLAG_UNSIGNED
, "unsigned long", objfile
);
4671 objfile_type
->builtin_long_long
4672 = init_type (TYPE_CODE_INT
,
4673 gdbarch_long_long_bit (gdbarch
) / TARGET_CHAR_BIT
,
4674 0, "long long", objfile
);
4675 objfile_type
->builtin_unsigned_long_long
4676 = init_type (TYPE_CODE_INT
,
4677 gdbarch_long_long_bit (gdbarch
) / TARGET_CHAR_BIT
,
4678 TYPE_FLAG_UNSIGNED
, "unsigned long long", objfile
);
4680 objfile_type
->builtin_float
4681 = init_type (TYPE_CODE_FLT
,
4682 gdbarch_float_bit (gdbarch
) / TARGET_CHAR_BIT
,
4683 0, "float", objfile
);
4684 TYPE_FLOATFORMAT (objfile_type
->builtin_float
)
4685 = gdbarch_float_format (gdbarch
);
4686 objfile_type
->builtin_double
4687 = init_type (TYPE_CODE_FLT
,
4688 gdbarch_double_bit (gdbarch
) / TARGET_CHAR_BIT
,
4689 0, "double", objfile
);
4690 TYPE_FLOATFORMAT (objfile_type
->builtin_double
)
4691 = gdbarch_double_format (gdbarch
);
4692 objfile_type
->builtin_long_double
4693 = init_type (TYPE_CODE_FLT
,
4694 gdbarch_long_double_bit (gdbarch
) / TARGET_CHAR_BIT
,
4695 0, "long double", objfile
);
4696 TYPE_FLOATFORMAT (objfile_type
->builtin_long_double
)
4697 = gdbarch_long_double_format (gdbarch
);
4699 /* This type represents a type that was unrecognized in symbol read-in. */
4700 objfile_type
->builtin_error
4701 = init_type (TYPE_CODE_ERROR
, 0, 0, "<unknown type>", objfile
);
4703 /* The following set of types is used for symbols with no
4704 debug information. */
4705 objfile_type
->nodebug_text_symbol
4706 = init_type (TYPE_CODE_FUNC
, 1, 0,
4707 "<text variable, no debug info>", objfile
);
4708 TYPE_TARGET_TYPE (objfile_type
->nodebug_text_symbol
)
4709 = objfile_type
->builtin_int
;
4710 objfile_type
->nodebug_text_gnu_ifunc_symbol
4711 = init_type (TYPE_CODE_FUNC
, 1, TYPE_FLAG_GNU_IFUNC
,
4712 "<text gnu-indirect-function variable, no debug info>",
4714 TYPE_TARGET_TYPE (objfile_type
->nodebug_text_gnu_ifunc_symbol
)
4715 = objfile_type
->nodebug_text_symbol
;
4716 objfile_type
->nodebug_got_plt_symbol
4717 = init_type (TYPE_CODE_PTR
, gdbarch_addr_bit (gdbarch
) / 8, 0,
4718 "<text from jump slot in .got.plt, no debug info>",
4720 TYPE_TARGET_TYPE (objfile_type
->nodebug_got_plt_symbol
)
4721 = objfile_type
->nodebug_text_symbol
;
4722 objfile_type
->nodebug_data_symbol
4723 = init_type (TYPE_CODE_INT
,
4724 gdbarch_int_bit (gdbarch
) / HOST_CHAR_BIT
, 0,
4725 "<data variable, no debug info>", objfile
);
4726 objfile_type
->nodebug_unknown_symbol
4727 = init_type (TYPE_CODE_INT
, 1, 0,
4728 "<variable (not text or data), no debug info>", objfile
);
4729 objfile_type
->nodebug_tls_symbol
4730 = init_type (TYPE_CODE_INT
,
4731 gdbarch_int_bit (gdbarch
) / HOST_CHAR_BIT
, 0,
4732 "<thread local variable, no debug info>", objfile
);
4734 /* NOTE: on some targets, addresses and pointers are not necessarily
4738 - gdb's `struct type' always describes the target's
4740 - gdb's `struct value' objects should always hold values in
4742 - gdb's CORE_ADDR values are addresses in the unified virtual
4743 address space that the assembler and linker work with. Thus,
4744 since target_read_memory takes a CORE_ADDR as an argument, it
4745 can access any memory on the target, even if the processor has
4746 separate code and data address spaces.
4748 In this context, objfile_type->builtin_core_addr is a bit odd:
4749 it's a target type for a value the target will never see. It's
4750 only used to hold the values of (typeless) linker symbols, which
4751 are indeed in the unified virtual address space. */
4753 objfile_type
->builtin_core_addr
4754 = init_type (TYPE_CODE_INT
,
4755 gdbarch_addr_bit (gdbarch
) / 8,
4756 TYPE_FLAG_UNSIGNED
, "__CORE_ADDR", objfile
);
4758 set_objfile_data (objfile
, objfile_type_data
, objfile_type
);
4759 return objfile_type
;
4762 extern initialize_file_ftype _initialize_gdbtypes
;
4765 _initialize_gdbtypes (void)
4767 gdbtypes_data
= gdbarch_data_register_post_init (gdbtypes_post_init
);
4768 objfile_type_data
= register_objfile_data ();
4770 add_setshow_zuinteger_cmd ("overload", no_class
, &overload_debug
,
4771 _("Set debugging of C++ overloading."),
4772 _("Show debugging of C++ overloading."),
4773 _("When enabled, ranking of the "
4774 "functions is displayed."),
4776 show_overload_debug
,
4777 &setdebuglist
, &showdebuglist
);
4779 /* Add user knob for controlling resolution of opaque types. */
4780 add_setshow_boolean_cmd ("opaque-type-resolution", class_support
,
4781 &opaque_type_resolution
,
4782 _("Set resolution of opaque struct/class/union"
4783 " types (if set before loading symbols)."),
4784 _("Show resolution of opaque struct/class/union"
4785 " types (if set before loading symbols)."),
4787 show_opaque_type_resolution
,
4788 &setlist
, &showlist
);
4790 /* Add an option to permit non-strict type checking. */
4791 add_setshow_boolean_cmd ("type", class_support
,
4792 &strict_type_checking
,
4793 _("Set strict type checking."),
4794 _("Show strict type checking."),
4796 show_strict_type_checking
,
4797 &setchecklist
, &showchecklist
);