1 /* Support routines for manipulating internal types for GDB.
3 Copyright (C) 1992-2016 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_CHAIN (type
) = type
; /* Chain back to itself. */
188 /* Allocate a new GDBARCH-associated type structure and fill it
189 with some defaults. Space for the type structure is allocated
190 on the obstack associated with GDBARCH. */
193 alloc_type_arch (struct gdbarch
*gdbarch
)
197 gdb_assert (gdbarch
!= NULL
);
199 /* Alloc the structure and start off with all fields zeroed. */
201 type
= GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct type
);
202 TYPE_MAIN_TYPE (type
) = GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct main_type
);
204 TYPE_OBJFILE_OWNED (type
) = 0;
205 TYPE_OWNER (type
).gdbarch
= gdbarch
;
207 /* Initialize the fields that might not be zero. */
209 TYPE_CODE (type
) = TYPE_CODE_UNDEF
;
210 TYPE_CHAIN (type
) = type
; /* Chain back to itself. */
215 /* If TYPE is objfile-associated, allocate a new type structure
216 associated with the same objfile. If TYPE is gdbarch-associated,
217 allocate a new type structure associated with the same gdbarch. */
220 alloc_type_copy (const struct type
*type
)
222 if (TYPE_OBJFILE_OWNED (type
))
223 return alloc_type (TYPE_OWNER (type
).objfile
);
225 return alloc_type_arch (TYPE_OWNER (type
).gdbarch
);
228 /* If TYPE is gdbarch-associated, return that architecture.
229 If TYPE is objfile-associated, return that objfile's architecture. */
232 get_type_arch (const struct type
*type
)
234 if (TYPE_OBJFILE_OWNED (type
))
235 return get_objfile_arch (TYPE_OWNER (type
).objfile
);
237 return TYPE_OWNER (type
).gdbarch
;
240 /* See gdbtypes.h. */
243 get_target_type (struct type
*type
)
247 type
= TYPE_TARGET_TYPE (type
);
249 type
= check_typedef (type
);
255 /* See gdbtypes.h. */
258 type_length_units (struct type
*type
)
260 struct gdbarch
*arch
= get_type_arch (type
);
261 int unit_size
= gdbarch_addressable_memory_unit_size (arch
);
263 return TYPE_LENGTH (type
) / unit_size
;
266 /* Alloc a new type instance structure, fill it with some defaults,
267 and point it at OLDTYPE. Allocate the new type instance from the
268 same place as OLDTYPE. */
271 alloc_type_instance (struct type
*oldtype
)
275 /* Allocate the structure. */
277 if (! TYPE_OBJFILE_OWNED (oldtype
))
278 type
= XCNEW (struct type
);
280 type
= OBSTACK_ZALLOC (&TYPE_OBJFILE (oldtype
)->objfile_obstack
,
283 TYPE_MAIN_TYPE (type
) = TYPE_MAIN_TYPE (oldtype
);
285 TYPE_CHAIN (type
) = type
; /* Chain back to itself for now. */
290 /* Clear all remnants of the previous type at TYPE, in preparation for
291 replacing it with something else. Preserve owner information. */
294 smash_type (struct type
*type
)
296 int objfile_owned
= TYPE_OBJFILE_OWNED (type
);
297 union type_owner owner
= TYPE_OWNER (type
);
299 memset (TYPE_MAIN_TYPE (type
), 0, sizeof (struct main_type
));
301 /* Restore owner information. */
302 TYPE_OBJFILE_OWNED (type
) = objfile_owned
;
303 TYPE_OWNER (type
) = owner
;
305 /* For now, delete the rings. */
306 TYPE_CHAIN (type
) = type
;
308 /* For now, leave the pointer/reference types alone. */
311 /* Lookup a pointer to a type TYPE. TYPEPTR, if nonzero, points
312 to a pointer to memory where the pointer type should be stored.
313 If *TYPEPTR is zero, update it to point to the pointer type we return.
314 We allocate new memory if needed. */
317 make_pointer_type (struct type
*type
, struct type
**typeptr
)
319 struct type
*ntype
; /* New type */
322 ntype
= TYPE_POINTER_TYPE (type
);
327 return ntype
; /* Don't care about alloc,
328 and have new type. */
329 else if (*typeptr
== 0)
331 *typeptr
= ntype
; /* Tracking alloc, and have new type. */
336 if (typeptr
== 0 || *typeptr
== 0) /* We'll need to allocate one. */
338 ntype
= alloc_type_copy (type
);
342 else /* We have storage, but need to reset it. */
345 chain
= TYPE_CHAIN (ntype
);
347 TYPE_CHAIN (ntype
) = chain
;
350 TYPE_TARGET_TYPE (ntype
) = type
;
351 TYPE_POINTER_TYPE (type
) = ntype
;
353 /* FIXME! Assumes the machine has only one representation for pointers! */
356 = gdbarch_ptr_bit (get_type_arch (type
)) / TARGET_CHAR_BIT
;
357 TYPE_CODE (ntype
) = TYPE_CODE_PTR
;
359 /* Mark pointers as unsigned. The target converts between pointers
360 and addresses (CORE_ADDRs) using gdbarch_pointer_to_address and
361 gdbarch_address_to_pointer. */
362 TYPE_UNSIGNED (ntype
) = 1;
364 /* Update the length of all the other variants of this type. */
365 chain
= TYPE_CHAIN (ntype
);
366 while (chain
!= ntype
)
368 TYPE_LENGTH (chain
) = TYPE_LENGTH (ntype
);
369 chain
= TYPE_CHAIN (chain
);
375 /* Given a type TYPE, return a type of pointers to that type.
376 May need to construct such a type if this is the first use. */
379 lookup_pointer_type (struct type
*type
)
381 return make_pointer_type (type
, (struct type
**) 0);
384 /* Lookup a C++ `reference' to a type TYPE. TYPEPTR, if nonzero,
385 points to a pointer to memory where the reference type should be
386 stored. If *TYPEPTR is zero, update it to point to the reference
387 type we return. We allocate new memory if needed. */
390 make_reference_type (struct type
*type
, struct type
**typeptr
)
392 struct type
*ntype
; /* New type */
395 ntype
= TYPE_REFERENCE_TYPE (type
);
400 return ntype
; /* Don't care about alloc,
401 and have new type. */
402 else if (*typeptr
== 0)
404 *typeptr
= ntype
; /* Tracking alloc, and have new type. */
409 if (typeptr
== 0 || *typeptr
== 0) /* We'll need to allocate one. */
411 ntype
= alloc_type_copy (type
);
415 else /* We have storage, but need to reset it. */
418 chain
= TYPE_CHAIN (ntype
);
420 TYPE_CHAIN (ntype
) = chain
;
423 TYPE_TARGET_TYPE (ntype
) = type
;
424 TYPE_REFERENCE_TYPE (type
) = ntype
;
426 /* FIXME! Assume the machine has only one representation for
427 references, and that it matches the (only) representation for
430 TYPE_LENGTH (ntype
) =
431 gdbarch_ptr_bit (get_type_arch (type
)) / TARGET_CHAR_BIT
;
432 TYPE_CODE (ntype
) = TYPE_CODE_REF
;
434 if (!TYPE_REFERENCE_TYPE (type
)) /* Remember it, if don't have one. */
435 TYPE_REFERENCE_TYPE (type
) = ntype
;
437 /* Update the length of all the other variants of this type. */
438 chain
= TYPE_CHAIN (ntype
);
439 while (chain
!= ntype
)
441 TYPE_LENGTH (chain
) = TYPE_LENGTH (ntype
);
442 chain
= TYPE_CHAIN (chain
);
448 /* Same as above, but caller doesn't care about memory allocation
452 lookup_reference_type (struct type
*type
)
454 return make_reference_type (type
, (struct type
**) 0);
457 /* Lookup a function type that returns type TYPE. TYPEPTR, if
458 nonzero, points to a pointer to memory where the function type
459 should be stored. If *TYPEPTR is zero, update it to point to the
460 function type we return. We allocate new memory if needed. */
463 make_function_type (struct type
*type
, struct type
**typeptr
)
465 struct type
*ntype
; /* New type */
467 if (typeptr
== 0 || *typeptr
== 0) /* We'll need to allocate one. */
469 ntype
= alloc_type_copy (type
);
473 else /* We have storage, but need to reset it. */
479 TYPE_TARGET_TYPE (ntype
) = type
;
481 TYPE_LENGTH (ntype
) = 1;
482 TYPE_CODE (ntype
) = TYPE_CODE_FUNC
;
484 INIT_FUNC_SPECIFIC (ntype
);
489 /* Given a type TYPE, return a type of functions that return that type.
490 May need to construct such a type if this is the first use. */
493 lookup_function_type (struct type
*type
)
495 return make_function_type (type
, (struct type
**) 0);
498 /* Given a type TYPE and argument types, return the appropriate
499 function type. If the final type in PARAM_TYPES is NULL, make a
503 lookup_function_type_with_arguments (struct type
*type
,
505 struct type
**param_types
)
507 struct type
*fn
= make_function_type (type
, (struct type
**) 0);
512 if (param_types
[nparams
- 1] == NULL
)
515 TYPE_VARARGS (fn
) = 1;
517 else if (TYPE_CODE (check_typedef (param_types
[nparams
- 1]))
521 /* Caller should have ensured this. */
522 gdb_assert (nparams
== 0);
523 TYPE_PROTOTYPED (fn
) = 1;
527 TYPE_NFIELDS (fn
) = nparams
;
529 = (struct field
*) TYPE_ZALLOC (fn
, nparams
* sizeof (struct field
));
530 for (i
= 0; i
< nparams
; ++i
)
531 TYPE_FIELD_TYPE (fn
, i
) = param_types
[i
];
536 /* Identify address space identifier by name --
537 return the integer flag defined in gdbtypes.h. */
540 address_space_name_to_int (struct gdbarch
*gdbarch
, char *space_identifier
)
544 /* Check for known address space delimiters. */
545 if (!strcmp (space_identifier
, "code"))
546 return TYPE_INSTANCE_FLAG_CODE_SPACE
;
547 else if (!strcmp (space_identifier
, "data"))
548 return TYPE_INSTANCE_FLAG_DATA_SPACE
;
549 else if (gdbarch_address_class_name_to_type_flags_p (gdbarch
)
550 && gdbarch_address_class_name_to_type_flags (gdbarch
,
555 error (_("Unknown address space specifier: \"%s\""), space_identifier
);
558 /* Identify address space identifier by integer flag as defined in
559 gdbtypes.h -- return the string version of the adress space name. */
562 address_space_int_to_name (struct gdbarch
*gdbarch
, int space_flag
)
564 if (space_flag
& TYPE_INSTANCE_FLAG_CODE_SPACE
)
566 else if (space_flag
& TYPE_INSTANCE_FLAG_DATA_SPACE
)
568 else if ((space_flag
& TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL
)
569 && gdbarch_address_class_type_flags_to_name_p (gdbarch
))
570 return gdbarch_address_class_type_flags_to_name (gdbarch
, space_flag
);
575 /* Create a new type with instance flags NEW_FLAGS, based on TYPE.
577 If STORAGE is non-NULL, create the new type instance there.
578 STORAGE must be in the same obstack as TYPE. */
581 make_qualified_type (struct type
*type
, int new_flags
,
582 struct type
*storage
)
589 if (TYPE_INSTANCE_FLAGS (ntype
) == new_flags
)
591 ntype
= TYPE_CHAIN (ntype
);
593 while (ntype
!= type
);
595 /* Create a new type instance. */
597 ntype
= alloc_type_instance (type
);
600 /* If STORAGE was provided, it had better be in the same objfile
601 as TYPE. Otherwise, we can't link it into TYPE's cv chain:
602 if one objfile is freed and the other kept, we'd have
603 dangling pointers. */
604 gdb_assert (TYPE_OBJFILE (type
) == TYPE_OBJFILE (storage
));
607 TYPE_MAIN_TYPE (ntype
) = TYPE_MAIN_TYPE (type
);
608 TYPE_CHAIN (ntype
) = ntype
;
611 /* Pointers or references to the original type are not relevant to
613 TYPE_POINTER_TYPE (ntype
) = (struct type
*) 0;
614 TYPE_REFERENCE_TYPE (ntype
) = (struct type
*) 0;
616 /* Chain the new qualified type to the old type. */
617 TYPE_CHAIN (ntype
) = TYPE_CHAIN (type
);
618 TYPE_CHAIN (type
) = ntype
;
620 /* Now set the instance flags and return the new type. */
621 TYPE_INSTANCE_FLAGS (ntype
) = new_flags
;
623 /* Set length of new type to that of the original type. */
624 TYPE_LENGTH (ntype
) = TYPE_LENGTH (type
);
629 /* Make an address-space-delimited variant of a type -- a type that
630 is identical to the one supplied except that it has an address
631 space attribute attached to it (such as "code" or "data").
633 The space attributes "code" and "data" are for Harvard
634 architectures. The address space attributes are for architectures
635 which have alternately sized pointers or pointers with alternate
639 make_type_with_address_space (struct type
*type
, int space_flag
)
641 int new_flags
= ((TYPE_INSTANCE_FLAGS (type
)
642 & ~(TYPE_INSTANCE_FLAG_CODE_SPACE
643 | TYPE_INSTANCE_FLAG_DATA_SPACE
644 | TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL
))
647 return make_qualified_type (type
, new_flags
, NULL
);
650 /* Make a "c-v" variant of a type -- a type that is identical to the
651 one supplied except that it may have const or volatile attributes
652 CNST is a flag for setting the const attribute
653 VOLTL is a flag for setting the volatile attribute
654 TYPE is the base type whose variant we are creating.
656 If TYPEPTR and *TYPEPTR are non-zero, then *TYPEPTR points to
657 storage to hold the new qualified type; *TYPEPTR and TYPE must be
658 in the same objfile. Otherwise, allocate fresh memory for the new
659 type whereever TYPE lives. If TYPEPTR is non-zero, set it to the
660 new type we construct. */
663 make_cv_type (int cnst
, int voltl
,
665 struct type
**typeptr
)
667 struct type
*ntype
; /* New type */
669 int new_flags
= (TYPE_INSTANCE_FLAGS (type
)
670 & ~(TYPE_INSTANCE_FLAG_CONST
671 | TYPE_INSTANCE_FLAG_VOLATILE
));
674 new_flags
|= TYPE_INSTANCE_FLAG_CONST
;
677 new_flags
|= TYPE_INSTANCE_FLAG_VOLATILE
;
679 if (typeptr
&& *typeptr
!= NULL
)
681 /* TYPE and *TYPEPTR must be in the same objfile. We can't have
682 a C-V variant chain that threads across objfiles: if one
683 objfile gets freed, then the other has a broken C-V chain.
685 This code used to try to copy over the main type from TYPE to
686 *TYPEPTR if they were in different objfiles, but that's
687 wrong, too: TYPE may have a field list or member function
688 lists, which refer to types of their own, etc. etc. The
689 whole shebang would need to be copied over recursively; you
690 can't have inter-objfile pointers. The only thing to do is
691 to leave stub types as stub types, and look them up afresh by
692 name each time you encounter them. */
693 gdb_assert (TYPE_OBJFILE (*typeptr
) == TYPE_OBJFILE (type
));
696 ntype
= make_qualified_type (type
, new_flags
,
697 typeptr
? *typeptr
: NULL
);
705 /* Make a 'restrict'-qualified version of TYPE. */
708 make_restrict_type (struct type
*type
)
710 return make_qualified_type (type
,
711 (TYPE_INSTANCE_FLAGS (type
)
712 | TYPE_INSTANCE_FLAG_RESTRICT
),
716 /* Make a type without const, volatile, or restrict. */
719 make_unqualified_type (struct type
*type
)
721 return make_qualified_type (type
,
722 (TYPE_INSTANCE_FLAGS (type
)
723 & ~(TYPE_INSTANCE_FLAG_CONST
724 | TYPE_INSTANCE_FLAG_VOLATILE
725 | TYPE_INSTANCE_FLAG_RESTRICT
)),
729 /* Make a '_Atomic'-qualified version of TYPE. */
732 make_atomic_type (struct type
*type
)
734 return make_qualified_type (type
,
735 (TYPE_INSTANCE_FLAGS (type
)
736 | TYPE_INSTANCE_FLAG_ATOMIC
),
740 /* Replace the contents of ntype with the type *type. This changes the
741 contents, rather than the pointer for TYPE_MAIN_TYPE (ntype); thus
742 the changes are propogated to all types in the TYPE_CHAIN.
744 In order to build recursive types, it's inevitable that we'll need
745 to update types in place --- but this sort of indiscriminate
746 smashing is ugly, and needs to be replaced with something more
747 controlled. TYPE_MAIN_TYPE is a step in this direction; it's not
748 clear if more steps are needed. */
751 replace_type (struct type
*ntype
, struct type
*type
)
755 /* These two types had better be in the same objfile. Otherwise,
756 the assignment of one type's main type structure to the other
757 will produce a type with references to objects (names; field
758 lists; etc.) allocated on an objfile other than its own. */
759 gdb_assert (TYPE_OBJFILE (ntype
) == TYPE_OBJFILE (type
));
761 *TYPE_MAIN_TYPE (ntype
) = *TYPE_MAIN_TYPE (type
);
763 /* The type length is not a part of the main type. Update it for
764 each type on the variant chain. */
768 /* Assert that this element of the chain has no address-class bits
769 set in its flags. Such type variants might have type lengths
770 which are supposed to be different from the non-address-class
771 variants. This assertion shouldn't ever be triggered because
772 symbol readers which do construct address-class variants don't
773 call replace_type(). */
774 gdb_assert (TYPE_ADDRESS_CLASS_ALL (chain
) == 0);
776 TYPE_LENGTH (chain
) = TYPE_LENGTH (type
);
777 chain
= TYPE_CHAIN (chain
);
779 while (ntype
!= chain
);
781 /* Assert that the two types have equivalent instance qualifiers.
782 This should be true for at least all of our debug readers. */
783 gdb_assert (TYPE_INSTANCE_FLAGS (ntype
) == TYPE_INSTANCE_FLAGS (type
));
786 /* Implement direct support for MEMBER_TYPE in GNU C++.
787 May need to construct such a type if this is the first use.
788 The TYPE is the type of the member. The DOMAIN is the type
789 of the aggregate that the member belongs to. */
792 lookup_memberptr_type (struct type
*type
, struct type
*domain
)
796 mtype
= alloc_type_copy (type
);
797 smash_to_memberptr_type (mtype
, domain
, type
);
801 /* Return a pointer-to-method type, for a method of type TO_TYPE. */
804 lookup_methodptr_type (struct type
*to_type
)
808 mtype
= alloc_type_copy (to_type
);
809 smash_to_methodptr_type (mtype
, to_type
);
813 /* Allocate a stub method whose return type is TYPE. This apparently
814 happens for speed of symbol reading, since parsing out the
815 arguments to the method is cpu-intensive, the way we are doing it.
816 So, we will fill in arguments later. This always returns a fresh
820 allocate_stub_method (struct type
*type
)
824 mtype
= alloc_type_copy (type
);
825 TYPE_CODE (mtype
) = TYPE_CODE_METHOD
;
826 TYPE_LENGTH (mtype
) = 1;
827 TYPE_STUB (mtype
) = 1;
828 TYPE_TARGET_TYPE (mtype
) = type
;
829 /* TYPE_SELF_TYPE (mtype) = unknown yet */
833 /* Create a range type with a dynamic range from LOW_BOUND to
834 HIGH_BOUND, inclusive. See create_range_type for further details. */
837 create_range_type (struct type
*result_type
, struct type
*index_type
,
838 const struct dynamic_prop
*low_bound
,
839 const struct dynamic_prop
*high_bound
)
841 if (result_type
== NULL
)
842 result_type
= alloc_type_copy (index_type
);
843 TYPE_CODE (result_type
) = TYPE_CODE_RANGE
;
844 TYPE_TARGET_TYPE (result_type
) = index_type
;
845 if (TYPE_STUB (index_type
))
846 TYPE_TARGET_STUB (result_type
) = 1;
848 TYPE_LENGTH (result_type
) = TYPE_LENGTH (check_typedef (index_type
));
850 TYPE_RANGE_DATA (result_type
) = (struct range_bounds
*)
851 TYPE_ZALLOC (result_type
, sizeof (struct range_bounds
));
852 TYPE_RANGE_DATA (result_type
)->low
= *low_bound
;
853 TYPE_RANGE_DATA (result_type
)->high
= *high_bound
;
855 if (low_bound
->kind
== PROP_CONST
&& low_bound
->data
.const_val
>= 0)
856 TYPE_UNSIGNED (result_type
) = 1;
858 /* Ada allows the declaration of range types whose upper bound is
859 less than the lower bound, so checking the lower bound is not
860 enough. Make sure we do not mark a range type whose upper bound
861 is negative as unsigned. */
862 if (high_bound
->kind
== PROP_CONST
&& high_bound
->data
.const_val
< 0)
863 TYPE_UNSIGNED (result_type
) = 0;
868 /* Create a range type using either a blank type supplied in
869 RESULT_TYPE, or creating a new type, inheriting the objfile from
872 Indices will be of type INDEX_TYPE, and will range from LOW_BOUND
873 to HIGH_BOUND, inclusive.
875 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
876 sure it is TYPE_CODE_UNDEF before we bash it into a range type? */
879 create_static_range_type (struct type
*result_type
, struct type
*index_type
,
880 LONGEST low_bound
, LONGEST high_bound
)
882 struct dynamic_prop low
, high
;
884 low
.kind
= PROP_CONST
;
885 low
.data
.const_val
= low_bound
;
887 high
.kind
= PROP_CONST
;
888 high
.data
.const_val
= high_bound
;
890 result_type
= create_range_type (result_type
, index_type
, &low
, &high
);
895 /* Predicate tests whether BOUNDS are static. Returns 1 if all bounds values
896 are static, otherwise returns 0. */
899 has_static_range (const struct range_bounds
*bounds
)
901 return (bounds
->low
.kind
== PROP_CONST
902 && bounds
->high
.kind
== PROP_CONST
);
906 /* Set *LOWP and *HIGHP to the lower and upper bounds of discrete type
907 TYPE. Return 1 if type is a range type, 0 if it is discrete (and
908 bounds will fit in LONGEST), or -1 otherwise. */
911 get_discrete_bounds (struct type
*type
, LONGEST
*lowp
, LONGEST
*highp
)
913 type
= check_typedef (type
);
914 switch (TYPE_CODE (type
))
916 case TYPE_CODE_RANGE
:
917 *lowp
= TYPE_LOW_BOUND (type
);
918 *highp
= TYPE_HIGH_BOUND (type
);
921 if (TYPE_NFIELDS (type
) > 0)
923 /* The enums may not be sorted by value, so search all
927 *lowp
= *highp
= TYPE_FIELD_ENUMVAL (type
, 0);
928 for (i
= 0; i
< TYPE_NFIELDS (type
); i
++)
930 if (TYPE_FIELD_ENUMVAL (type
, i
) < *lowp
)
931 *lowp
= TYPE_FIELD_ENUMVAL (type
, i
);
932 if (TYPE_FIELD_ENUMVAL (type
, i
) > *highp
)
933 *highp
= TYPE_FIELD_ENUMVAL (type
, i
);
936 /* Set unsigned indicator if warranted. */
939 TYPE_UNSIGNED (type
) = 1;
953 if (TYPE_LENGTH (type
) > sizeof (LONGEST
)) /* Too big */
955 if (!TYPE_UNSIGNED (type
))
957 *lowp
= -(1 << (TYPE_LENGTH (type
) * TARGET_CHAR_BIT
- 1));
961 /* ... fall through for unsigned ints ... */
964 /* This round-about calculation is to avoid shifting by
965 TYPE_LENGTH (type) * TARGET_CHAR_BIT, which will not work
966 if TYPE_LENGTH (type) == sizeof (LONGEST). */
967 *highp
= 1 << (TYPE_LENGTH (type
) * TARGET_CHAR_BIT
- 1);
968 *highp
= (*highp
- 1) | *highp
;
975 /* Assuming TYPE is a simple, non-empty array type, compute its upper
976 and lower bound. Save the low bound into LOW_BOUND if not NULL.
977 Save the high bound into HIGH_BOUND if not NULL.
979 Return 1 if the operation was successful. Return zero otherwise,
980 in which case the values of LOW_BOUND and HIGH_BOUNDS are unmodified.
982 We now simply use get_discrete_bounds call to get the values
983 of the low and high bounds.
984 get_discrete_bounds can return three values:
985 1, meaning that index is a range,
986 0, meaning that index is a discrete type,
987 or -1 for failure. */
990 get_array_bounds (struct type
*type
, LONGEST
*low_bound
, LONGEST
*high_bound
)
992 struct type
*index
= TYPE_INDEX_TYPE (type
);
1000 res
= get_discrete_bounds (index
, &low
, &high
);
1004 /* Check if the array bounds are undefined. */
1006 && ((low_bound
&& TYPE_ARRAY_LOWER_BOUND_IS_UNDEFINED (type
))
1007 || (high_bound
&& TYPE_ARRAY_UPPER_BOUND_IS_UNDEFINED (type
))))
1019 /* Assuming that TYPE is a discrete type and VAL is a valid integer
1020 representation of a value of this type, save the corresponding
1021 position number in POS.
1023 Its differs from VAL only in the case of enumeration types. In
1024 this case, the position number of the value of the first listed
1025 enumeration literal is zero; the position number of the value of
1026 each subsequent enumeration literal is one more than that of its
1027 predecessor in the list.
1029 Return 1 if the operation was successful. Return zero otherwise,
1030 in which case the value of POS is unmodified.
1034 discrete_position (struct type
*type
, LONGEST val
, LONGEST
*pos
)
1036 if (TYPE_CODE (type
) == TYPE_CODE_ENUM
)
1040 for (i
= 0; i
< TYPE_NFIELDS (type
); i
+= 1)
1042 if (val
== TYPE_FIELD_ENUMVAL (type
, i
))
1048 /* Invalid enumeration value. */
1058 /* Create an array type using either a blank type supplied in
1059 RESULT_TYPE, or creating a new type, inheriting the objfile from
1062 Elements will be of type ELEMENT_TYPE, the indices will be of type
1065 If BIT_STRIDE is not zero, build a packed array type whose element
1066 size is BIT_STRIDE. Otherwise, ignore this parameter.
1068 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
1069 sure it is TYPE_CODE_UNDEF before we bash it into an array
1073 create_array_type_with_stride (struct type
*result_type
,
1074 struct type
*element_type
,
1075 struct type
*range_type
,
1076 unsigned int bit_stride
)
1078 if (result_type
== NULL
)
1079 result_type
= alloc_type_copy (range_type
);
1081 TYPE_CODE (result_type
) = TYPE_CODE_ARRAY
;
1082 TYPE_TARGET_TYPE (result_type
) = element_type
;
1083 if (has_static_range (TYPE_RANGE_DATA (range_type
))
1084 && (!type_not_associated (result_type
)
1085 && !type_not_allocated (result_type
)))
1087 LONGEST low_bound
, high_bound
;
1089 if (get_discrete_bounds (range_type
, &low_bound
, &high_bound
) < 0)
1090 low_bound
= high_bound
= 0;
1091 element_type
= check_typedef (element_type
);
1092 /* Be careful when setting the array length. Ada arrays can be
1093 empty arrays with the high_bound being smaller than the low_bound.
1094 In such cases, the array length should be zero. */
1095 if (high_bound
< low_bound
)
1096 TYPE_LENGTH (result_type
) = 0;
1097 else if (bit_stride
> 0)
1098 TYPE_LENGTH (result_type
) =
1099 (bit_stride
* (high_bound
- low_bound
+ 1) + 7) / 8;
1101 TYPE_LENGTH (result_type
) =
1102 TYPE_LENGTH (element_type
) * (high_bound
- low_bound
+ 1);
1106 /* This type is dynamic and its length needs to be computed
1107 on demand. In the meantime, avoid leaving the TYPE_LENGTH
1108 undefined by setting it to zero. Although we are not expected
1109 to trust TYPE_LENGTH in this case, setting the size to zero
1110 allows us to avoid allocating objects of random sizes in case
1111 we accidently do. */
1112 TYPE_LENGTH (result_type
) = 0;
1115 TYPE_NFIELDS (result_type
) = 1;
1116 TYPE_FIELDS (result_type
) =
1117 (struct field
*) TYPE_ZALLOC (result_type
, sizeof (struct field
));
1118 TYPE_INDEX_TYPE (result_type
) = range_type
;
1120 TYPE_FIELD_BITSIZE (result_type
, 0) = bit_stride
;
1122 /* TYPE_TARGET_STUB will take care of zero length arrays. */
1123 if (TYPE_LENGTH (result_type
) == 0)
1124 TYPE_TARGET_STUB (result_type
) = 1;
1129 /* Same as create_array_type_with_stride but with no bit_stride
1130 (BIT_STRIDE = 0), thus building an unpacked array. */
1133 create_array_type (struct type
*result_type
,
1134 struct type
*element_type
,
1135 struct type
*range_type
)
1137 return create_array_type_with_stride (result_type
, element_type
,
1142 lookup_array_range_type (struct type
*element_type
,
1143 LONGEST low_bound
, LONGEST high_bound
)
1145 struct gdbarch
*gdbarch
= get_type_arch (element_type
);
1146 struct type
*index_type
= builtin_type (gdbarch
)->builtin_int
;
1147 struct type
*range_type
1148 = create_static_range_type (NULL
, index_type
, low_bound
, high_bound
);
1150 return create_array_type (NULL
, element_type
, range_type
);
1153 /* Create a string type using either a blank type supplied in
1154 RESULT_TYPE, or creating a new type. String types are similar
1155 enough to array of char types that we can use create_array_type to
1156 build the basic type and then bash it into a string type.
1158 For fixed length strings, the range type contains 0 as the lower
1159 bound and the length of the string minus one as the upper bound.
1161 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
1162 sure it is TYPE_CODE_UNDEF before we bash it into a string
1166 create_string_type (struct type
*result_type
,
1167 struct type
*string_char_type
,
1168 struct type
*range_type
)
1170 result_type
= create_array_type (result_type
,
1173 TYPE_CODE (result_type
) = TYPE_CODE_STRING
;
1178 lookup_string_range_type (struct type
*string_char_type
,
1179 LONGEST low_bound
, LONGEST high_bound
)
1181 struct type
*result_type
;
1183 result_type
= lookup_array_range_type (string_char_type
,
1184 low_bound
, high_bound
);
1185 TYPE_CODE (result_type
) = TYPE_CODE_STRING
;
1190 create_set_type (struct type
*result_type
, struct type
*domain_type
)
1192 if (result_type
== NULL
)
1193 result_type
= alloc_type_copy (domain_type
);
1195 TYPE_CODE (result_type
) = TYPE_CODE_SET
;
1196 TYPE_NFIELDS (result_type
) = 1;
1197 TYPE_FIELDS (result_type
)
1198 = (struct field
*) TYPE_ZALLOC (result_type
, sizeof (struct field
));
1200 if (!TYPE_STUB (domain_type
))
1202 LONGEST low_bound
, high_bound
, bit_length
;
1204 if (get_discrete_bounds (domain_type
, &low_bound
, &high_bound
) < 0)
1205 low_bound
= high_bound
= 0;
1206 bit_length
= high_bound
- low_bound
+ 1;
1207 TYPE_LENGTH (result_type
)
1208 = (bit_length
+ TARGET_CHAR_BIT
- 1) / TARGET_CHAR_BIT
;
1210 TYPE_UNSIGNED (result_type
) = 1;
1212 TYPE_FIELD_TYPE (result_type
, 0) = domain_type
;
1217 /* Convert ARRAY_TYPE to a vector type. This may modify ARRAY_TYPE
1218 and any array types nested inside it. */
1221 make_vector_type (struct type
*array_type
)
1223 struct type
*inner_array
, *elt_type
;
1226 /* Find the innermost array type, in case the array is
1227 multi-dimensional. */
1228 inner_array
= array_type
;
1229 while (TYPE_CODE (TYPE_TARGET_TYPE (inner_array
)) == TYPE_CODE_ARRAY
)
1230 inner_array
= TYPE_TARGET_TYPE (inner_array
);
1232 elt_type
= TYPE_TARGET_TYPE (inner_array
);
1233 if (TYPE_CODE (elt_type
) == TYPE_CODE_INT
)
1235 flags
= TYPE_INSTANCE_FLAGS (elt_type
) | TYPE_INSTANCE_FLAG_NOTTEXT
;
1236 elt_type
= make_qualified_type (elt_type
, flags
, NULL
);
1237 TYPE_TARGET_TYPE (inner_array
) = elt_type
;
1240 TYPE_VECTOR (array_type
) = 1;
1244 init_vector_type (struct type
*elt_type
, int n
)
1246 struct type
*array_type
;
1248 array_type
= lookup_array_range_type (elt_type
, 0, n
- 1);
1249 make_vector_type (array_type
);
1253 /* Internal routine called by TYPE_SELF_TYPE to return the type that TYPE
1254 belongs to. In c++ this is the class of "this", but TYPE_THIS_TYPE is too
1255 confusing. "self" is a common enough replacement for "this".
1256 TYPE must be one of TYPE_CODE_METHODPTR, TYPE_CODE_MEMBERPTR, or
1257 TYPE_CODE_METHOD. */
1260 internal_type_self_type (struct type
*type
)
1262 switch (TYPE_CODE (type
))
1264 case TYPE_CODE_METHODPTR
:
1265 case TYPE_CODE_MEMBERPTR
:
1266 if (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_NONE
)
1268 gdb_assert (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_SELF_TYPE
);
1269 return TYPE_MAIN_TYPE (type
)->type_specific
.self_type
;
1270 case TYPE_CODE_METHOD
:
1271 if (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_NONE
)
1273 gdb_assert (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_FUNC
);
1274 return TYPE_MAIN_TYPE (type
)->type_specific
.func_stuff
->self_type
;
1276 gdb_assert_not_reached ("bad type");
1280 /* Set the type of the class that TYPE belongs to.
1281 In c++ this is the class of "this".
1282 TYPE must be one of TYPE_CODE_METHODPTR, TYPE_CODE_MEMBERPTR, or
1283 TYPE_CODE_METHOD. */
1286 set_type_self_type (struct type
*type
, struct type
*self_type
)
1288 switch (TYPE_CODE (type
))
1290 case TYPE_CODE_METHODPTR
:
1291 case TYPE_CODE_MEMBERPTR
:
1292 if (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_NONE
)
1293 TYPE_SPECIFIC_FIELD (type
) = TYPE_SPECIFIC_SELF_TYPE
;
1294 gdb_assert (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_SELF_TYPE
);
1295 TYPE_MAIN_TYPE (type
)->type_specific
.self_type
= self_type
;
1297 case TYPE_CODE_METHOD
:
1298 if (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_NONE
)
1299 INIT_FUNC_SPECIFIC (type
);
1300 gdb_assert (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_FUNC
);
1301 TYPE_MAIN_TYPE (type
)->type_specific
.func_stuff
->self_type
= self_type
;
1304 gdb_assert_not_reached ("bad type");
1308 /* Smash TYPE to be a type of pointers to members of SELF_TYPE with type
1309 TO_TYPE. A member pointer is a wierd thing -- it amounts to a
1310 typed offset into a struct, e.g. "an int at offset 8". A MEMBER
1311 TYPE doesn't include the offset (that's the value of the MEMBER
1312 itself), but does include the structure type into which it points
1315 When "smashing" the type, we preserve the objfile that the old type
1316 pointed to, since we aren't changing where the type is actually
1320 smash_to_memberptr_type (struct type
*type
, struct type
*self_type
,
1321 struct type
*to_type
)
1324 TYPE_CODE (type
) = TYPE_CODE_MEMBERPTR
;
1325 TYPE_TARGET_TYPE (type
) = to_type
;
1326 set_type_self_type (type
, self_type
);
1327 /* Assume that a data member pointer is the same size as a normal
1330 = gdbarch_ptr_bit (get_type_arch (to_type
)) / TARGET_CHAR_BIT
;
1333 /* Smash TYPE to be a type of pointer to methods type TO_TYPE.
1335 When "smashing" the type, we preserve the objfile that the old type
1336 pointed to, since we aren't changing where the type is actually
1340 smash_to_methodptr_type (struct type
*type
, struct type
*to_type
)
1343 TYPE_CODE (type
) = TYPE_CODE_METHODPTR
;
1344 TYPE_TARGET_TYPE (type
) = to_type
;
1345 set_type_self_type (type
, TYPE_SELF_TYPE (to_type
));
1346 TYPE_LENGTH (type
) = cplus_method_ptr_size (to_type
);
1349 /* Smash TYPE to be a type of method of SELF_TYPE with type TO_TYPE.
1350 METHOD just means `function that gets an extra "this" argument'.
1352 When "smashing" the type, we preserve the objfile that the old type
1353 pointed to, since we aren't changing where the type is actually
1357 smash_to_method_type (struct type
*type
, struct type
*self_type
,
1358 struct type
*to_type
, struct field
*args
,
1359 int nargs
, int varargs
)
1362 TYPE_CODE (type
) = TYPE_CODE_METHOD
;
1363 TYPE_TARGET_TYPE (type
) = to_type
;
1364 set_type_self_type (type
, self_type
);
1365 TYPE_FIELDS (type
) = args
;
1366 TYPE_NFIELDS (type
) = nargs
;
1368 TYPE_VARARGS (type
) = 1;
1369 TYPE_LENGTH (type
) = 1; /* In practice, this is never needed. */
1372 /* Return a typename for a struct/union/enum type without "struct ",
1373 "union ", or "enum ". If the type has a NULL name, return NULL. */
1376 type_name_no_tag (const struct type
*type
)
1378 if (TYPE_TAG_NAME (type
) != NULL
)
1379 return TYPE_TAG_NAME (type
);
1381 /* Is there code which expects this to return the name if there is
1382 no tag name? My guess is that this is mainly used for C++ in
1383 cases where the two will always be the same. */
1384 return TYPE_NAME (type
);
1387 /* A wrapper of type_name_no_tag which calls error if the type is anonymous.
1388 Since GCC PR debug/47510 DWARF provides associated information to detect the
1389 anonymous class linkage name from its typedef.
1391 Parameter TYPE should not yet have CHECK_TYPEDEF applied, this function will
1395 type_name_no_tag_or_error (struct type
*type
)
1397 struct type
*saved_type
= type
;
1399 struct objfile
*objfile
;
1401 type
= check_typedef (type
);
1403 name
= type_name_no_tag (type
);
1407 name
= type_name_no_tag (saved_type
);
1408 objfile
= TYPE_OBJFILE (saved_type
);
1409 error (_("Invalid anonymous type %s [in module %s], GCC PR debug/47510 bug?"),
1410 name
? name
: "<anonymous>",
1411 objfile
? objfile_name (objfile
) : "<arch>");
1414 /* Lookup a typedef or primitive type named NAME, visible in lexical
1415 block BLOCK. If NOERR is nonzero, return zero if NAME is not
1416 suitably defined. */
1419 lookup_typename (const struct language_defn
*language
,
1420 struct gdbarch
*gdbarch
, const char *name
,
1421 const struct block
*block
, int noerr
)
1425 sym
= lookup_symbol_in_language (name
, block
, VAR_DOMAIN
,
1426 language
->la_language
, NULL
).symbol
;
1427 if (sym
!= NULL
&& SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
1428 return SYMBOL_TYPE (sym
);
1432 error (_("No type named %s."), name
);
1436 lookup_unsigned_typename (const struct language_defn
*language
,
1437 struct gdbarch
*gdbarch
, const char *name
)
1439 char *uns
= (char *) alloca (strlen (name
) + 10);
1441 strcpy (uns
, "unsigned ");
1442 strcpy (uns
+ 9, name
);
1443 return lookup_typename (language
, gdbarch
, uns
, (struct block
*) NULL
, 0);
1447 lookup_signed_typename (const struct language_defn
*language
,
1448 struct gdbarch
*gdbarch
, const char *name
)
1451 char *uns
= (char *) alloca (strlen (name
) + 8);
1453 strcpy (uns
, "signed ");
1454 strcpy (uns
+ 7, name
);
1455 t
= lookup_typename (language
, gdbarch
, uns
, (struct block
*) NULL
, 1);
1456 /* If we don't find "signed FOO" just try again with plain "FOO". */
1459 return lookup_typename (language
, gdbarch
, name
, (struct block
*) NULL
, 0);
1462 /* Lookup a structure type named "struct NAME",
1463 visible in lexical block BLOCK. */
1466 lookup_struct (const char *name
, const struct block
*block
)
1470 sym
= lookup_symbol (name
, block
, STRUCT_DOMAIN
, 0).symbol
;
1474 error (_("No struct type named %s."), name
);
1476 if (TYPE_CODE (SYMBOL_TYPE (sym
)) != TYPE_CODE_STRUCT
)
1478 error (_("This context has class, union or enum %s, not a struct."),
1481 return (SYMBOL_TYPE (sym
));
1484 /* Lookup a union type named "union NAME",
1485 visible in lexical block BLOCK. */
1488 lookup_union (const char *name
, const struct block
*block
)
1493 sym
= lookup_symbol (name
, block
, STRUCT_DOMAIN
, 0).symbol
;
1496 error (_("No union type named %s."), name
);
1498 t
= SYMBOL_TYPE (sym
);
1500 if (TYPE_CODE (t
) == TYPE_CODE_UNION
)
1503 /* If we get here, it's not a union. */
1504 error (_("This context has class, struct or enum %s, not a union."),
1508 /* Lookup an enum type named "enum NAME",
1509 visible in lexical block BLOCK. */
1512 lookup_enum (const char *name
, const struct block
*block
)
1516 sym
= lookup_symbol (name
, block
, STRUCT_DOMAIN
, 0).symbol
;
1519 error (_("No enum type named %s."), name
);
1521 if (TYPE_CODE (SYMBOL_TYPE (sym
)) != TYPE_CODE_ENUM
)
1523 error (_("This context has class, struct or union %s, not an enum."),
1526 return (SYMBOL_TYPE (sym
));
1529 /* Lookup a template type named "template NAME<TYPE>",
1530 visible in lexical block BLOCK. */
1533 lookup_template_type (char *name
, struct type
*type
,
1534 const struct block
*block
)
1537 char *nam
= (char *)
1538 alloca (strlen (name
) + strlen (TYPE_NAME (type
)) + 4);
1542 strcat (nam
, TYPE_NAME (type
));
1543 strcat (nam
, " >"); /* FIXME, extra space still introduced in gcc? */
1545 sym
= lookup_symbol (nam
, block
, VAR_DOMAIN
, 0).symbol
;
1549 error (_("No template type named %s."), name
);
1551 if (TYPE_CODE (SYMBOL_TYPE (sym
)) != TYPE_CODE_STRUCT
)
1553 error (_("This context has class, union or enum %s, not a struct."),
1556 return (SYMBOL_TYPE (sym
));
1559 /* Given a type TYPE, lookup the type of the component of type named
1562 TYPE can be either a struct or union, or a pointer or reference to
1563 a struct or union. If it is a pointer or reference, its target
1564 type is automatically used. Thus '.' and '->' are interchangable,
1565 as specified for the definitions of the expression element types
1566 STRUCTOP_STRUCT and STRUCTOP_PTR.
1568 If NOERR is nonzero, return zero if NAME is not suitably defined.
1569 If NAME is the name of a baseclass type, return that type. */
1572 lookup_struct_elt_type (struct type
*type
, const char *name
, int noerr
)
1579 type
= check_typedef (type
);
1580 if (TYPE_CODE (type
) != TYPE_CODE_PTR
1581 && TYPE_CODE (type
) != TYPE_CODE_REF
)
1583 type
= TYPE_TARGET_TYPE (type
);
1586 if (TYPE_CODE (type
) != TYPE_CODE_STRUCT
1587 && TYPE_CODE (type
) != TYPE_CODE_UNION
)
1589 type_name
= type_to_string (type
);
1590 make_cleanup (xfree
, type_name
);
1591 error (_("Type %s is not a structure or union type."), type_name
);
1595 /* FIXME: This change put in by Michael seems incorrect for the case
1596 where the structure tag name is the same as the member name.
1597 I.e. when doing "ptype bell->bar" for "struct foo { int bar; int
1598 foo; } bell;" Disabled by fnf. */
1602 type_name
= type_name_no_tag (type
);
1603 if (type_name
!= NULL
&& strcmp (type_name
, name
) == 0)
1608 for (i
= TYPE_NFIELDS (type
) - 1; i
>= TYPE_N_BASECLASSES (type
); i
--)
1610 const char *t_field_name
= TYPE_FIELD_NAME (type
, i
);
1612 if (t_field_name
&& (strcmp_iw (t_field_name
, name
) == 0))
1614 return TYPE_FIELD_TYPE (type
, i
);
1616 else if (!t_field_name
|| *t_field_name
== '\0')
1618 struct type
*subtype
1619 = lookup_struct_elt_type (TYPE_FIELD_TYPE (type
, i
), name
, 1);
1621 if (subtype
!= NULL
)
1626 /* OK, it's not in this class. Recursively check the baseclasses. */
1627 for (i
= TYPE_N_BASECLASSES (type
) - 1; i
>= 0; i
--)
1631 t
= lookup_struct_elt_type (TYPE_BASECLASS (type
, i
), name
, 1);
1643 type_name
= type_to_string (type
);
1644 make_cleanup (xfree
, type_name
);
1645 error (_("Type %s has no component named %s."), type_name
, name
);
1648 /* Store in *MAX the largest number representable by unsigned integer type
1652 get_unsigned_type_max (struct type
*type
, ULONGEST
*max
)
1656 type
= check_typedef (type
);
1657 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_INT
&& TYPE_UNSIGNED (type
));
1658 gdb_assert (TYPE_LENGTH (type
) <= sizeof (ULONGEST
));
1660 /* Written this way to avoid overflow. */
1661 n
= TYPE_LENGTH (type
) * TARGET_CHAR_BIT
;
1662 *max
= ((((ULONGEST
) 1 << (n
- 1)) - 1) << 1) | 1;
1665 /* Store in *MIN, *MAX the smallest and largest numbers representable by
1666 signed integer type TYPE. */
1669 get_signed_type_minmax (struct type
*type
, LONGEST
*min
, LONGEST
*max
)
1673 type
= check_typedef (type
);
1674 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_INT
&& !TYPE_UNSIGNED (type
));
1675 gdb_assert (TYPE_LENGTH (type
) <= sizeof (LONGEST
));
1677 n
= TYPE_LENGTH (type
) * TARGET_CHAR_BIT
;
1678 *min
= -((ULONGEST
) 1 << (n
- 1));
1679 *max
= ((ULONGEST
) 1 << (n
- 1)) - 1;
1682 /* Internal routine called by TYPE_VPTR_FIELDNO to return the value of
1683 cplus_stuff.vptr_fieldno.
1685 cplus_stuff is initialized to cplus_struct_default which does not
1686 set vptr_fieldno to -1 for portability reasons (IWBN to use C99
1687 designated initializers). We cope with that here. */
1690 internal_type_vptr_fieldno (struct type
*type
)
1692 type
= check_typedef (type
);
1693 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_STRUCT
1694 || TYPE_CODE (type
) == TYPE_CODE_UNION
);
1695 if (!HAVE_CPLUS_STRUCT (type
))
1697 return TYPE_RAW_CPLUS_SPECIFIC (type
)->vptr_fieldno
;
1700 /* Set the value of cplus_stuff.vptr_fieldno. */
1703 set_type_vptr_fieldno (struct type
*type
, int fieldno
)
1705 type
= check_typedef (type
);
1706 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_STRUCT
1707 || TYPE_CODE (type
) == TYPE_CODE_UNION
);
1708 if (!HAVE_CPLUS_STRUCT (type
))
1709 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
1710 TYPE_RAW_CPLUS_SPECIFIC (type
)->vptr_fieldno
= fieldno
;
1713 /* Internal routine called by TYPE_VPTR_BASETYPE to return the value of
1714 cplus_stuff.vptr_basetype. */
1717 internal_type_vptr_basetype (struct type
*type
)
1719 type
= check_typedef (type
);
1720 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_STRUCT
1721 || TYPE_CODE (type
) == TYPE_CODE_UNION
);
1722 gdb_assert (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_CPLUS_STUFF
);
1723 return TYPE_RAW_CPLUS_SPECIFIC (type
)->vptr_basetype
;
1726 /* Set the value of cplus_stuff.vptr_basetype. */
1729 set_type_vptr_basetype (struct type
*type
, struct type
*basetype
)
1731 type
= check_typedef (type
);
1732 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_STRUCT
1733 || TYPE_CODE (type
) == TYPE_CODE_UNION
);
1734 if (!HAVE_CPLUS_STRUCT (type
))
1735 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
1736 TYPE_RAW_CPLUS_SPECIFIC (type
)->vptr_basetype
= basetype
;
1739 /* Lookup the vptr basetype/fieldno values for TYPE.
1740 If found store vptr_basetype in *BASETYPEP if non-NULL, and return
1741 vptr_fieldno. Also, if found and basetype is from the same objfile,
1743 If not found, return -1 and ignore BASETYPEP.
1744 Callers should be aware that in some cases (for example,
1745 the type or one of its baseclasses is a stub type and we are
1746 debugging a .o file, or the compiler uses DWARF-2 and is not GCC),
1747 this function will not be able to find the
1748 virtual function table pointer, and vptr_fieldno will remain -1 and
1749 vptr_basetype will remain NULL or incomplete. */
1752 get_vptr_fieldno (struct type
*type
, struct type
**basetypep
)
1754 type
= check_typedef (type
);
1756 if (TYPE_VPTR_FIELDNO (type
) < 0)
1760 /* We must start at zero in case the first (and only) baseclass
1761 is virtual (and hence we cannot share the table pointer). */
1762 for (i
= 0; i
< TYPE_N_BASECLASSES (type
); i
++)
1764 struct type
*baseclass
= check_typedef (TYPE_BASECLASS (type
, i
));
1766 struct type
*basetype
;
1768 fieldno
= get_vptr_fieldno (baseclass
, &basetype
);
1771 /* If the type comes from a different objfile we can't cache
1772 it, it may have a different lifetime. PR 2384 */
1773 if (TYPE_OBJFILE (type
) == TYPE_OBJFILE (basetype
))
1775 set_type_vptr_fieldno (type
, fieldno
);
1776 set_type_vptr_basetype (type
, basetype
);
1779 *basetypep
= basetype
;
1790 *basetypep
= TYPE_VPTR_BASETYPE (type
);
1791 return TYPE_VPTR_FIELDNO (type
);
1796 stub_noname_complaint (void)
1798 complaint (&symfile_complaints
, _("stub type has NULL name"));
1801 /* Worker for is_dynamic_type. */
1804 is_dynamic_type_internal (struct type
*type
, int top_level
)
1806 type
= check_typedef (type
);
1808 /* We only want to recognize references at the outermost level. */
1809 if (top_level
&& TYPE_CODE (type
) == TYPE_CODE_REF
)
1810 type
= check_typedef (TYPE_TARGET_TYPE (type
));
1812 /* Types that have a dynamic TYPE_DATA_LOCATION are considered
1813 dynamic, even if the type itself is statically defined.
1814 From a user's point of view, this may appear counter-intuitive;
1815 but it makes sense in this context, because the point is to determine
1816 whether any part of the type needs to be resolved before it can
1818 if (TYPE_DATA_LOCATION (type
) != NULL
1819 && (TYPE_DATA_LOCATION_KIND (type
) == PROP_LOCEXPR
1820 || TYPE_DATA_LOCATION_KIND (type
) == PROP_LOCLIST
))
1823 if (TYPE_ASSOCIATED_PROP (type
))
1826 if (TYPE_ALLOCATED_PROP (type
))
1829 switch (TYPE_CODE (type
))
1831 case TYPE_CODE_RANGE
:
1833 /* A range type is obviously dynamic if it has at least one
1834 dynamic bound. But also consider the range type to be
1835 dynamic when its subtype is dynamic, even if the bounds
1836 of the range type are static. It allows us to assume that
1837 the subtype of a static range type is also static. */
1838 return (!has_static_range (TYPE_RANGE_DATA (type
))
1839 || is_dynamic_type_internal (TYPE_TARGET_TYPE (type
), 0));
1842 case TYPE_CODE_ARRAY
:
1844 gdb_assert (TYPE_NFIELDS (type
) == 1);
1846 /* The array is dynamic if either the bounds are dynamic,
1847 or the elements it contains have a dynamic contents. */
1848 if (is_dynamic_type_internal (TYPE_INDEX_TYPE (type
), 0))
1850 return is_dynamic_type_internal (TYPE_TARGET_TYPE (type
), 0);
1853 case TYPE_CODE_STRUCT
:
1854 case TYPE_CODE_UNION
:
1858 for (i
= 0; i
< TYPE_NFIELDS (type
); ++i
)
1859 if (!field_is_static (&TYPE_FIELD (type
, i
))
1860 && is_dynamic_type_internal (TYPE_FIELD_TYPE (type
, i
), 0))
1869 /* See gdbtypes.h. */
1872 is_dynamic_type (struct type
*type
)
1874 return is_dynamic_type_internal (type
, 1);
1877 static struct type
*resolve_dynamic_type_internal
1878 (struct type
*type
, struct property_addr_info
*addr_stack
, int top_level
);
1880 /* Given a dynamic range type (dyn_range_type) and a stack of
1881 struct property_addr_info elements, return a static version
1884 static struct type
*
1885 resolve_dynamic_range (struct type
*dyn_range_type
,
1886 struct property_addr_info
*addr_stack
)
1889 struct type
*static_range_type
, *static_target_type
;
1890 const struct dynamic_prop
*prop
;
1891 struct dynamic_prop low_bound
, high_bound
;
1893 gdb_assert (TYPE_CODE (dyn_range_type
) == TYPE_CODE_RANGE
);
1895 prop
= &TYPE_RANGE_DATA (dyn_range_type
)->low
;
1896 if (dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
1898 low_bound
.kind
= PROP_CONST
;
1899 low_bound
.data
.const_val
= value
;
1903 low_bound
.kind
= PROP_UNDEFINED
;
1904 low_bound
.data
.const_val
= 0;
1907 prop
= &TYPE_RANGE_DATA (dyn_range_type
)->high
;
1908 if (dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
1910 high_bound
.kind
= PROP_CONST
;
1911 high_bound
.data
.const_val
= value
;
1913 if (TYPE_RANGE_DATA (dyn_range_type
)->flag_upper_bound_is_count
)
1914 high_bound
.data
.const_val
1915 = low_bound
.data
.const_val
+ high_bound
.data
.const_val
- 1;
1919 high_bound
.kind
= PROP_UNDEFINED
;
1920 high_bound
.data
.const_val
= 0;
1924 = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (dyn_range_type
),
1926 static_range_type
= create_range_type (copy_type (dyn_range_type
),
1928 &low_bound
, &high_bound
);
1929 TYPE_RANGE_DATA (static_range_type
)->flag_bound_evaluated
= 1;
1930 return static_range_type
;
1933 /* Resolves dynamic bound values of an array type TYPE to static ones.
1934 ADDR_STACK is a stack of struct property_addr_info to be used
1935 if needed during the dynamic resolution. */
1937 static struct type
*
1938 resolve_dynamic_array (struct type
*type
,
1939 struct property_addr_info
*addr_stack
)
1942 struct type
*elt_type
;
1943 struct type
*range_type
;
1944 struct type
*ary_dim
;
1945 struct dynamic_prop
*prop
;
1947 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_ARRAY
);
1949 type
= copy_type (type
);
1952 range_type
= check_typedef (TYPE_INDEX_TYPE (elt_type
));
1953 range_type
= resolve_dynamic_range (range_type
, addr_stack
);
1955 /* Resolve allocated/associated here before creating a new array type, which
1956 will update the length of the array accordingly. */
1957 prop
= TYPE_ALLOCATED_PROP (type
);
1958 if (prop
!= NULL
&& dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
1960 TYPE_DYN_PROP_ADDR (prop
) = value
;
1961 TYPE_DYN_PROP_KIND (prop
) = PROP_CONST
;
1963 prop
= TYPE_ASSOCIATED_PROP (type
);
1964 if (prop
!= NULL
&& dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
1966 TYPE_DYN_PROP_ADDR (prop
) = value
;
1967 TYPE_DYN_PROP_KIND (prop
) = PROP_CONST
;
1970 ary_dim
= check_typedef (TYPE_TARGET_TYPE (elt_type
));
1972 if (ary_dim
!= NULL
&& TYPE_CODE (ary_dim
) == TYPE_CODE_ARRAY
)
1973 elt_type
= resolve_dynamic_array (ary_dim
, addr_stack
);
1975 elt_type
= TYPE_TARGET_TYPE (type
);
1977 return create_array_type_with_stride (type
, elt_type
, range_type
,
1978 TYPE_FIELD_BITSIZE (type
, 0));
1981 /* Resolve dynamic bounds of members of the union TYPE to static
1982 bounds. ADDR_STACK is a stack of struct property_addr_info
1983 to be used if needed during the dynamic resolution. */
1985 static struct type
*
1986 resolve_dynamic_union (struct type
*type
,
1987 struct property_addr_info
*addr_stack
)
1989 struct type
*resolved_type
;
1991 unsigned int max_len
= 0;
1993 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_UNION
);
1995 resolved_type
= copy_type (type
);
1996 TYPE_FIELDS (resolved_type
)
1997 = (struct field
*) TYPE_ALLOC (resolved_type
,
1998 TYPE_NFIELDS (resolved_type
)
1999 * sizeof (struct field
));
2000 memcpy (TYPE_FIELDS (resolved_type
),
2002 TYPE_NFIELDS (resolved_type
) * sizeof (struct field
));
2003 for (i
= 0; i
< TYPE_NFIELDS (resolved_type
); ++i
)
2007 if (field_is_static (&TYPE_FIELD (type
, i
)))
2010 t
= resolve_dynamic_type_internal (TYPE_FIELD_TYPE (resolved_type
, i
),
2012 TYPE_FIELD_TYPE (resolved_type
, i
) = t
;
2013 if (TYPE_LENGTH (t
) > max_len
)
2014 max_len
= TYPE_LENGTH (t
);
2017 TYPE_LENGTH (resolved_type
) = max_len
;
2018 return resolved_type
;
2021 /* Resolve dynamic bounds of members of the struct TYPE to static
2022 bounds. ADDR_STACK is a stack of struct property_addr_info to
2023 be used if needed during the dynamic resolution. */
2025 static struct type
*
2026 resolve_dynamic_struct (struct type
*type
,
2027 struct property_addr_info
*addr_stack
)
2029 struct type
*resolved_type
;
2031 unsigned resolved_type_bit_length
= 0;
2033 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_STRUCT
);
2034 gdb_assert (TYPE_NFIELDS (type
) > 0);
2036 resolved_type
= copy_type (type
);
2037 TYPE_FIELDS (resolved_type
)
2038 = (struct field
*) TYPE_ALLOC (resolved_type
,
2039 TYPE_NFIELDS (resolved_type
)
2040 * sizeof (struct field
));
2041 memcpy (TYPE_FIELDS (resolved_type
),
2043 TYPE_NFIELDS (resolved_type
) * sizeof (struct field
));
2044 for (i
= 0; i
< TYPE_NFIELDS (resolved_type
); ++i
)
2046 unsigned new_bit_length
;
2047 struct property_addr_info pinfo
;
2049 if (field_is_static (&TYPE_FIELD (type
, i
)))
2052 /* As we know this field is not a static field, the field's
2053 field_loc_kind should be FIELD_LOC_KIND_BITPOS. Verify
2054 this is the case, but only trigger a simple error rather
2055 than an internal error if that fails. While failing
2056 that verification indicates a bug in our code, the error
2057 is not severe enough to suggest to the user he stops
2058 his debugging session because of it. */
2059 if (TYPE_FIELD_LOC_KIND (type
, i
) != FIELD_LOC_KIND_BITPOS
)
2060 error (_("Cannot determine struct field location"
2061 " (invalid location kind)"));
2063 pinfo
.type
= check_typedef (TYPE_FIELD_TYPE (type
, i
));
2064 pinfo
.valaddr
= addr_stack
->valaddr
;
2067 + (TYPE_FIELD_BITPOS (resolved_type
, i
) / TARGET_CHAR_BIT
));
2068 pinfo
.next
= addr_stack
;
2070 TYPE_FIELD_TYPE (resolved_type
, i
)
2071 = resolve_dynamic_type_internal (TYPE_FIELD_TYPE (resolved_type
, i
),
2073 gdb_assert (TYPE_FIELD_LOC_KIND (resolved_type
, i
)
2074 == FIELD_LOC_KIND_BITPOS
);
2076 new_bit_length
= TYPE_FIELD_BITPOS (resolved_type
, i
);
2077 if (TYPE_FIELD_BITSIZE (resolved_type
, i
) != 0)
2078 new_bit_length
+= TYPE_FIELD_BITSIZE (resolved_type
, i
);
2080 new_bit_length
+= (TYPE_LENGTH (TYPE_FIELD_TYPE (resolved_type
, i
))
2083 /* Normally, we would use the position and size of the last field
2084 to determine the size of the enclosing structure. But GCC seems
2085 to be encoding the position of some fields incorrectly when
2086 the struct contains a dynamic field that is not placed last.
2087 So we compute the struct size based on the field that has
2088 the highest position + size - probably the best we can do. */
2089 if (new_bit_length
> resolved_type_bit_length
)
2090 resolved_type_bit_length
= new_bit_length
;
2093 /* The length of a type won't change for fortran, but it does for C and Ada.
2094 For fortran the size of dynamic fields might change over time but not the
2095 type length of the structure. If we adapt it, we run into problems
2096 when calculating the element offset for arrays of structs. */
2097 if (current_language
->la_language
!= language_fortran
)
2098 TYPE_LENGTH (resolved_type
)
2099 = (resolved_type_bit_length
+ TARGET_CHAR_BIT
- 1) / TARGET_CHAR_BIT
;
2101 /* The Ada language uses this field as a cache for static fixed types: reset
2102 it as RESOLVED_TYPE must have its own static fixed type. */
2103 TYPE_TARGET_TYPE (resolved_type
) = NULL
;
2105 return resolved_type
;
2108 /* Worker for resolved_dynamic_type. */
2110 static struct type
*
2111 resolve_dynamic_type_internal (struct type
*type
,
2112 struct property_addr_info
*addr_stack
,
2115 struct type
*real_type
= check_typedef (type
);
2116 struct type
*resolved_type
= type
;
2117 struct dynamic_prop
*prop
;
2120 if (!is_dynamic_type_internal (real_type
, top_level
))
2123 if (TYPE_CODE (type
) == TYPE_CODE_TYPEDEF
)
2125 resolved_type
= copy_type (type
);
2126 TYPE_TARGET_TYPE (resolved_type
)
2127 = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (type
), addr_stack
,
2132 /* Before trying to resolve TYPE, make sure it is not a stub. */
2135 switch (TYPE_CODE (type
))
2139 struct property_addr_info pinfo
;
2141 pinfo
.type
= check_typedef (TYPE_TARGET_TYPE (type
));
2142 pinfo
.valaddr
= NULL
;
2143 if (addr_stack
->valaddr
!= NULL
)
2144 pinfo
.addr
= extract_typed_address (addr_stack
->valaddr
, type
);
2146 pinfo
.addr
= read_memory_typed_address (addr_stack
->addr
, type
);
2147 pinfo
.next
= addr_stack
;
2149 resolved_type
= copy_type (type
);
2150 TYPE_TARGET_TYPE (resolved_type
)
2151 = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (type
),
2156 case TYPE_CODE_ARRAY
:
2157 resolved_type
= resolve_dynamic_array (type
, addr_stack
);
2160 case TYPE_CODE_RANGE
:
2161 resolved_type
= resolve_dynamic_range (type
, addr_stack
);
2164 case TYPE_CODE_UNION
:
2165 resolved_type
= resolve_dynamic_union (type
, addr_stack
);
2168 case TYPE_CODE_STRUCT
:
2169 resolved_type
= resolve_dynamic_struct (type
, addr_stack
);
2174 /* Resolve data_location attribute. */
2175 prop
= TYPE_DATA_LOCATION (resolved_type
);
2177 && dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2179 TYPE_DYN_PROP_ADDR (prop
) = value
;
2180 TYPE_DYN_PROP_KIND (prop
) = PROP_CONST
;
2183 return resolved_type
;
2186 /* See gdbtypes.h */
2189 resolve_dynamic_type (struct type
*type
, const gdb_byte
*valaddr
,
2192 struct property_addr_info pinfo
2193 = {check_typedef (type
), valaddr
, addr
, NULL
};
2195 return resolve_dynamic_type_internal (type
, &pinfo
, 1);
2198 /* See gdbtypes.h */
2200 struct dynamic_prop
*
2201 get_dyn_prop (enum dynamic_prop_node_kind prop_kind
, const struct type
*type
)
2203 struct dynamic_prop_list
*node
= TYPE_DYN_PROP_LIST (type
);
2205 while (node
!= NULL
)
2207 if (node
->prop_kind
== prop_kind
)
2214 /* See gdbtypes.h */
2217 add_dyn_prop (enum dynamic_prop_node_kind prop_kind
, struct dynamic_prop prop
,
2218 struct type
*type
, struct objfile
*objfile
)
2220 struct dynamic_prop_list
*temp
;
2222 gdb_assert (TYPE_OBJFILE_OWNED (type
));
2224 temp
= XOBNEW (&objfile
->objfile_obstack
, struct dynamic_prop_list
);
2225 temp
->prop_kind
= prop_kind
;
2227 temp
->next
= TYPE_DYN_PROP_LIST (type
);
2229 TYPE_DYN_PROP_LIST (type
) = temp
;
2232 /* Remove dynamic property from TYPE in case it exists. */
2235 remove_dyn_prop (enum dynamic_prop_node_kind prop_kind
,
2238 struct dynamic_prop_list
*prev_node
, *curr_node
;
2240 curr_node
= TYPE_DYN_PROP_LIST (type
);
2243 while (NULL
!= curr_node
)
2245 if (curr_node
->prop_kind
== prop_kind
)
2247 /* Update the linked list but don't free anything.
2248 The property was allocated on objstack and it is not known
2249 if we are on top of it. Nevertheless, everything is released
2250 when the complete objstack is freed. */
2251 if (NULL
== prev_node
)
2252 TYPE_DYN_PROP_LIST (type
) = curr_node
->next
;
2254 prev_node
->next
= curr_node
->next
;
2259 prev_node
= curr_node
;
2260 curr_node
= curr_node
->next
;
2264 /* Find the real type of TYPE. This function returns the real type,
2265 after removing all layers of typedefs, and completing opaque or stub
2266 types. Completion changes the TYPE argument, but stripping of
2269 Instance flags (e.g. const/volatile) are preserved as typedefs are
2270 stripped. If necessary a new qualified form of the underlying type
2273 NOTE: This will return a typedef if TYPE_TARGET_TYPE for the typedef has
2274 not been computed and we're either in the middle of reading symbols, or
2275 there was no name for the typedef in the debug info.
2277 NOTE: Lookup of opaque types can throw errors for invalid symbol files.
2278 QUITs in the symbol reading code can also throw.
2279 Thus this function can throw an exception.
2281 If TYPE is a TYPE_CODE_TYPEDEF, its length is updated to the length of
2284 If this is a stubbed struct (i.e. declared as struct foo *), see if
2285 we can find a full definition in some other file. If so, copy this
2286 definition, so we can use it in future. There used to be a comment
2287 (but not any code) that if we don't find a full definition, we'd
2288 set a flag so we don't spend time in the future checking the same
2289 type. That would be a mistake, though--we might load in more
2290 symbols which contain a full definition for the type. */
2293 check_typedef (struct type
*type
)
2295 struct type
*orig_type
= type
;
2296 /* While we're removing typedefs, we don't want to lose qualifiers.
2297 E.g., const/volatile. */
2298 int instance_flags
= TYPE_INSTANCE_FLAGS (type
);
2302 while (TYPE_CODE (type
) == TYPE_CODE_TYPEDEF
)
2304 if (!TYPE_TARGET_TYPE (type
))
2309 /* It is dangerous to call lookup_symbol if we are currently
2310 reading a symtab. Infinite recursion is one danger. */
2311 if (currently_reading_symtab
)
2312 return make_qualified_type (type
, instance_flags
, NULL
);
2314 name
= type_name_no_tag (type
);
2315 /* FIXME: shouldn't we separately check the TYPE_NAME and
2316 the TYPE_TAG_NAME, and look in STRUCT_DOMAIN and/or
2317 VAR_DOMAIN as appropriate? (this code was written before
2318 TYPE_NAME and TYPE_TAG_NAME were separate). */
2321 stub_noname_complaint ();
2322 return make_qualified_type (type
, instance_flags
, NULL
);
2324 sym
= lookup_symbol (name
, 0, STRUCT_DOMAIN
, 0).symbol
;
2326 TYPE_TARGET_TYPE (type
) = SYMBOL_TYPE (sym
);
2327 else /* TYPE_CODE_UNDEF */
2328 TYPE_TARGET_TYPE (type
) = alloc_type_arch (get_type_arch (type
));
2330 type
= TYPE_TARGET_TYPE (type
);
2332 /* Preserve the instance flags as we traverse down the typedef chain.
2334 Handling address spaces/classes is nasty, what do we do if there's a
2336 E.g., what if an outer typedef marks the type as class_1 and an inner
2337 typedef marks the type as class_2?
2338 This is the wrong place to do such error checking. We leave it to
2339 the code that created the typedef in the first place to flag the
2340 error. We just pick the outer address space (akin to letting the
2341 outer cast in a chain of casting win), instead of assuming
2342 "it can't happen". */
2344 const int ALL_SPACES
= (TYPE_INSTANCE_FLAG_CODE_SPACE
2345 | TYPE_INSTANCE_FLAG_DATA_SPACE
);
2346 const int ALL_CLASSES
= TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL
;
2347 int new_instance_flags
= TYPE_INSTANCE_FLAGS (type
);
2349 /* Treat code vs data spaces and address classes separately. */
2350 if ((instance_flags
& ALL_SPACES
) != 0)
2351 new_instance_flags
&= ~ALL_SPACES
;
2352 if ((instance_flags
& ALL_CLASSES
) != 0)
2353 new_instance_flags
&= ~ALL_CLASSES
;
2355 instance_flags
|= new_instance_flags
;
2359 /* If this is a struct/class/union with no fields, then check
2360 whether a full definition exists somewhere else. This is for
2361 systems where a type definition with no fields is issued for such
2362 types, instead of identifying them as stub types in the first
2365 if (TYPE_IS_OPAQUE (type
)
2366 && opaque_type_resolution
2367 && !currently_reading_symtab
)
2369 const char *name
= type_name_no_tag (type
);
2370 struct type
*newtype
;
2374 stub_noname_complaint ();
2375 return make_qualified_type (type
, instance_flags
, NULL
);
2377 newtype
= lookup_transparent_type (name
);
2381 /* If the resolved type and the stub are in the same
2382 objfile, then replace the stub type with the real deal.
2383 But if they're in separate objfiles, leave the stub
2384 alone; we'll just look up the transparent type every time
2385 we call check_typedef. We can't create pointers between
2386 types allocated to different objfiles, since they may
2387 have different lifetimes. Trying to copy NEWTYPE over to
2388 TYPE's objfile is pointless, too, since you'll have to
2389 move over any other types NEWTYPE refers to, which could
2390 be an unbounded amount of stuff. */
2391 if (TYPE_OBJFILE (newtype
) == TYPE_OBJFILE (type
))
2392 type
= make_qualified_type (newtype
,
2393 TYPE_INSTANCE_FLAGS (type
),
2399 /* Otherwise, rely on the stub flag being set for opaque/stubbed
2401 else if (TYPE_STUB (type
) && !currently_reading_symtab
)
2403 const char *name
= type_name_no_tag (type
);
2404 /* FIXME: shouldn't we separately check the TYPE_NAME and the
2405 TYPE_TAG_NAME, and look in STRUCT_DOMAIN and/or VAR_DOMAIN
2406 as appropriate? (this code was written before TYPE_NAME and
2407 TYPE_TAG_NAME were separate). */
2412 stub_noname_complaint ();
2413 return make_qualified_type (type
, instance_flags
, NULL
);
2415 sym
= lookup_symbol (name
, 0, STRUCT_DOMAIN
, 0).symbol
;
2418 /* Same as above for opaque types, we can replace the stub
2419 with the complete type only if they are in the same
2421 if (TYPE_OBJFILE (SYMBOL_TYPE(sym
)) == TYPE_OBJFILE (type
))
2422 type
= make_qualified_type (SYMBOL_TYPE (sym
),
2423 TYPE_INSTANCE_FLAGS (type
),
2426 type
= SYMBOL_TYPE (sym
);
2430 if (TYPE_TARGET_STUB (type
))
2432 struct type
*target_type
= check_typedef (TYPE_TARGET_TYPE (type
));
2434 if (TYPE_STUB (target_type
) || TYPE_TARGET_STUB (target_type
))
2436 /* Nothing we can do. */
2438 else if (TYPE_CODE (type
) == TYPE_CODE_RANGE
)
2440 TYPE_LENGTH (type
) = TYPE_LENGTH (target_type
);
2441 TYPE_TARGET_STUB (type
) = 0;
2445 type
= make_qualified_type (type
, instance_flags
, NULL
);
2447 /* Cache TYPE_LENGTH for future use. */
2448 TYPE_LENGTH (orig_type
) = TYPE_LENGTH (type
);
2453 /* Parse a type expression in the string [P..P+LENGTH). If an error
2454 occurs, silently return a void type. */
2456 static struct type
*
2457 safe_parse_type (struct gdbarch
*gdbarch
, char *p
, int length
)
2459 struct ui_file
*saved_gdb_stderr
;
2460 struct type
*type
= NULL
; /* Initialize to keep gcc happy. */
2462 /* Suppress error messages. */
2463 saved_gdb_stderr
= gdb_stderr
;
2464 gdb_stderr
= ui_file_new ();
2466 /* Call parse_and_eval_type() without fear of longjmp()s. */
2469 type
= parse_and_eval_type (p
, length
);
2471 CATCH (except
, RETURN_MASK_ERROR
)
2473 type
= builtin_type (gdbarch
)->builtin_void
;
2477 /* Stop suppressing error messages. */
2478 ui_file_delete (gdb_stderr
);
2479 gdb_stderr
= saved_gdb_stderr
;
2484 /* Ugly hack to convert method stubs into method types.
2486 He ain't kiddin'. This demangles the name of the method into a
2487 string including argument types, parses out each argument type,
2488 generates a string casting a zero to that type, evaluates the
2489 string, and stuffs the resulting type into an argtype vector!!!
2490 Then it knows the type of the whole function (including argument
2491 types for overloading), which info used to be in the stab's but was
2492 removed to hack back the space required for them. */
2495 check_stub_method (struct type
*type
, int method_id
, int signature_id
)
2497 struct gdbarch
*gdbarch
= get_type_arch (type
);
2499 char *mangled_name
= gdb_mangle_name (type
, method_id
, signature_id
);
2500 char *demangled_name
= gdb_demangle (mangled_name
,
2501 DMGL_PARAMS
| DMGL_ANSI
);
2502 char *argtypetext
, *p
;
2503 int depth
= 0, argcount
= 1;
2504 struct field
*argtypes
;
2507 /* Make sure we got back a function string that we can use. */
2509 p
= strchr (demangled_name
, '(');
2513 if (demangled_name
== NULL
|| p
== NULL
)
2514 error (_("Internal: Cannot demangle mangled name `%s'."),
2517 /* Now, read in the parameters that define this type. */
2522 if (*p
== '(' || *p
== '<')
2526 else if (*p
== ')' || *p
== '>')
2530 else if (*p
== ',' && depth
== 0)
2538 /* If we read one argument and it was ``void'', don't count it. */
2539 if (startswith (argtypetext
, "(void)"))
2542 /* We need one extra slot, for the THIS pointer. */
2544 argtypes
= (struct field
*)
2545 TYPE_ALLOC (type
, (argcount
+ 1) * sizeof (struct field
));
2548 /* Add THIS pointer for non-static methods. */
2549 f
= TYPE_FN_FIELDLIST1 (type
, method_id
);
2550 if (TYPE_FN_FIELD_STATIC_P (f
, signature_id
))
2554 argtypes
[0].type
= lookup_pointer_type (type
);
2558 if (*p
!= ')') /* () means no args, skip while. */
2563 if (depth
<= 0 && (*p
== ',' || *p
== ')'))
2565 /* Avoid parsing of ellipsis, they will be handled below.
2566 Also avoid ``void'' as above. */
2567 if (strncmp (argtypetext
, "...", p
- argtypetext
) != 0
2568 && strncmp (argtypetext
, "void", p
- argtypetext
) != 0)
2570 argtypes
[argcount
].type
=
2571 safe_parse_type (gdbarch
, argtypetext
, p
- argtypetext
);
2574 argtypetext
= p
+ 1;
2577 if (*p
== '(' || *p
== '<')
2581 else if (*p
== ')' || *p
== '>')
2590 TYPE_FN_FIELD_PHYSNAME (f
, signature_id
) = mangled_name
;
2592 /* Now update the old "stub" type into a real type. */
2593 mtype
= TYPE_FN_FIELD_TYPE (f
, signature_id
);
2594 /* MTYPE may currently be a function (TYPE_CODE_FUNC).
2595 We want a method (TYPE_CODE_METHOD). */
2596 smash_to_method_type (mtype
, type
, TYPE_TARGET_TYPE (mtype
),
2597 argtypes
, argcount
, p
[-2] == '.');
2598 TYPE_STUB (mtype
) = 0;
2599 TYPE_FN_FIELD_STUB (f
, signature_id
) = 0;
2601 xfree (demangled_name
);
2604 /* This is the external interface to check_stub_method, above. This
2605 function unstubs all of the signatures for TYPE's METHOD_ID method
2606 name. After calling this function TYPE_FN_FIELD_STUB will be
2607 cleared for each signature and TYPE_FN_FIELDLIST_NAME will be
2610 This function unfortunately can not die until stabs do. */
2613 check_stub_method_group (struct type
*type
, int method_id
)
2615 int len
= TYPE_FN_FIELDLIST_LENGTH (type
, method_id
);
2616 struct fn_field
*f
= TYPE_FN_FIELDLIST1 (type
, method_id
);
2617 int j
, found_stub
= 0;
2619 for (j
= 0; j
< len
; j
++)
2620 if (TYPE_FN_FIELD_STUB (f
, j
))
2623 check_stub_method (type
, method_id
, j
);
2626 /* GNU v3 methods with incorrect names were corrected when we read
2627 in type information, because it was cheaper to do it then. The
2628 only GNU v2 methods with incorrect method names are operators and
2629 destructors; destructors were also corrected when we read in type
2632 Therefore the only thing we need to handle here are v2 operator
2634 if (found_stub
&& !startswith (TYPE_FN_FIELD_PHYSNAME (f
, 0), "_Z"))
2637 char dem_opname
[256];
2639 ret
= cplus_demangle_opname (TYPE_FN_FIELDLIST_NAME (type
,
2641 dem_opname
, DMGL_ANSI
);
2643 ret
= cplus_demangle_opname (TYPE_FN_FIELDLIST_NAME (type
,
2647 TYPE_FN_FIELDLIST_NAME (type
, method_id
) = xstrdup (dem_opname
);
2651 /* Ensure it is in .rodata (if available) by workarounding GCC PR 44690. */
2652 const struct cplus_struct_type cplus_struct_default
= { };
2655 allocate_cplus_struct_type (struct type
*type
)
2657 if (HAVE_CPLUS_STRUCT (type
))
2658 /* Structure was already allocated. Nothing more to do. */
2661 TYPE_SPECIFIC_FIELD (type
) = TYPE_SPECIFIC_CPLUS_STUFF
;
2662 TYPE_RAW_CPLUS_SPECIFIC (type
) = (struct cplus_struct_type
*)
2663 TYPE_ALLOC (type
, sizeof (struct cplus_struct_type
));
2664 *(TYPE_RAW_CPLUS_SPECIFIC (type
)) = cplus_struct_default
;
2665 set_type_vptr_fieldno (type
, -1);
2668 const struct gnat_aux_type gnat_aux_default
=
2671 /* Set the TYPE's type-specific kind to TYPE_SPECIFIC_GNAT_STUFF,
2672 and allocate the associated gnat-specific data. The gnat-specific
2673 data is also initialized to gnat_aux_default. */
2676 allocate_gnat_aux_type (struct type
*type
)
2678 TYPE_SPECIFIC_FIELD (type
) = TYPE_SPECIFIC_GNAT_STUFF
;
2679 TYPE_GNAT_SPECIFIC (type
) = (struct gnat_aux_type
*)
2680 TYPE_ALLOC (type
, sizeof (struct gnat_aux_type
));
2681 *(TYPE_GNAT_SPECIFIC (type
)) = gnat_aux_default
;
2684 /* Helper function to initialize a newly allocated type. Set type code
2685 to CODE and initialize the type-specific fields accordingly. */
2688 set_type_code (struct type
*type
, enum type_code code
)
2690 TYPE_CODE (type
) = code
;
2694 case TYPE_CODE_STRUCT
:
2695 case TYPE_CODE_UNION
:
2696 case TYPE_CODE_NAMESPACE
:
2697 INIT_CPLUS_SPECIFIC (type
);
2700 TYPE_SPECIFIC_FIELD (type
) = TYPE_SPECIFIC_FLOATFORMAT
;
2702 case TYPE_CODE_FUNC
:
2703 INIT_FUNC_SPECIFIC (type
);
2708 /* Helper function to verify floating-point format and size.
2709 BIT is the type size in bits; if BIT equals -1, the size is
2710 determined by the floatformat. Returns size to be used. */
2713 verify_floatformat (int bit
, const struct floatformat
**floatformats
)
2717 gdb_assert (floatformats
!= NULL
);
2718 gdb_assert (floatformats
[0] != NULL
&& floatformats
[1] != NULL
);
2719 bit
= floatformats
[0]->totalsize
;
2721 gdb_assert (bit
>= 0);
2723 if (floatformats
!= NULL
)
2725 size_t len
= bit
/ TARGET_CHAR_BIT
;
2727 gdb_assert (len
>= floatformat_totalsize_bytes (floatformats
[0]));
2728 gdb_assert (len
>= floatformat_totalsize_bytes (floatformats
[1]));
2734 /* Helper function to initialize the standard scalar types.
2736 If NAME is non-NULL, then it is used to initialize the type name.
2737 Note that NAME is not copied; it is required to have a lifetime at
2738 least as long as OBJFILE. */
2741 init_type (struct objfile
*objfile
, enum type_code code
, int length
,
2746 type
= alloc_type (objfile
);
2747 set_type_code (type
, code
);
2748 TYPE_LENGTH (type
) = length
;
2749 TYPE_NAME (type
) = name
;
2754 /* Allocate a TYPE_CODE_INT type structure associated with OBJFILE.
2755 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
2756 the type's TYPE_UNSIGNED flag. NAME is the type name. */
2759 init_integer_type (struct objfile
*objfile
,
2760 int bit
, int unsigned_p
, const char *name
)
2764 t
= init_type (objfile
, TYPE_CODE_INT
, bit
/ TARGET_CHAR_BIT
, name
);
2766 TYPE_UNSIGNED (t
) = 1;
2771 /* Allocate a TYPE_CODE_CHAR type structure associated with OBJFILE.
2772 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
2773 the type's TYPE_UNSIGNED flag. NAME is the type name. */
2776 init_character_type (struct objfile
*objfile
,
2777 int bit
, int unsigned_p
, const char *name
)
2781 t
= init_type (objfile
, TYPE_CODE_CHAR
, bit
/ TARGET_CHAR_BIT
, name
);
2783 TYPE_UNSIGNED (t
) = 1;
2788 /* Allocate a TYPE_CODE_BOOL type structure associated with OBJFILE.
2789 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
2790 the type's TYPE_UNSIGNED flag. NAME is the type name. */
2793 init_boolean_type (struct objfile
*objfile
,
2794 int bit
, int unsigned_p
, const char *name
)
2798 t
= init_type (objfile
, TYPE_CODE_BOOL
, bit
/ TARGET_CHAR_BIT
, name
);
2800 TYPE_UNSIGNED (t
) = 1;
2805 /* Allocate a TYPE_CODE_FLT type structure associated with OBJFILE.
2806 BIT is the type size in bits; if BIT equals -1, the size is
2807 determined by the floatformat. NAME is the type name. Set the
2808 TYPE_FLOATFORMAT from FLOATFORMATS. */
2811 init_float_type (struct objfile
*objfile
,
2812 int bit
, const char *name
,
2813 const struct floatformat
**floatformats
)
2817 bit
= verify_floatformat (bit
, floatformats
);
2818 t
= init_type (objfile
, TYPE_CODE_FLT
, bit
/ TARGET_CHAR_BIT
, name
);
2819 TYPE_FLOATFORMAT (t
) = floatformats
;
2824 /* Allocate a TYPE_CODE_DECFLOAT type structure associated with OBJFILE.
2825 BIT is the type size in bits. NAME is the type name. */
2828 init_decfloat_type (struct objfile
*objfile
, int bit
, const char *name
)
2832 t
= init_type (objfile
, TYPE_CODE_DECFLOAT
, bit
/ TARGET_CHAR_BIT
, name
);
2836 /* Allocate a TYPE_CODE_COMPLEX type structure associated with OBJFILE.
2837 NAME is the type name. TARGET_TYPE is the component float type. */
2840 init_complex_type (struct objfile
*objfile
,
2841 const char *name
, struct type
*target_type
)
2845 t
= init_type (objfile
, TYPE_CODE_COMPLEX
,
2846 2 * TYPE_LENGTH (target_type
), name
);
2847 TYPE_TARGET_TYPE (t
) = target_type
;
2851 /* Allocate a TYPE_CODE_PTR type structure associated with OBJFILE.
2852 BIT is the pointer type size in bits. NAME is the type name.
2853 TARGET_TYPE is the pointer target type. Always sets the pointer type's
2854 TYPE_UNSIGNED flag. */
2857 init_pointer_type (struct objfile
*objfile
,
2858 int bit
, const char *name
, struct type
*target_type
)
2862 t
= init_type (objfile
, TYPE_CODE_PTR
, bit
/ TARGET_CHAR_BIT
, name
);
2863 TYPE_TARGET_TYPE (t
) = target_type
;
2864 TYPE_UNSIGNED (t
) = 1;
2869 /* Queries on types. */
2872 can_dereference (struct type
*t
)
2874 /* FIXME: Should we return true for references as well as
2876 t
= check_typedef (t
);
2879 && TYPE_CODE (t
) == TYPE_CODE_PTR
2880 && TYPE_CODE (TYPE_TARGET_TYPE (t
)) != TYPE_CODE_VOID
);
2884 is_integral_type (struct type
*t
)
2886 t
= check_typedef (t
);
2889 && ((TYPE_CODE (t
) == TYPE_CODE_INT
)
2890 || (TYPE_CODE (t
) == TYPE_CODE_ENUM
)
2891 || (TYPE_CODE (t
) == TYPE_CODE_FLAGS
)
2892 || (TYPE_CODE (t
) == TYPE_CODE_CHAR
)
2893 || (TYPE_CODE (t
) == TYPE_CODE_RANGE
)
2894 || (TYPE_CODE (t
) == TYPE_CODE_BOOL
)));
2897 /* Return true if TYPE is scalar. */
2900 is_scalar_type (struct type
*type
)
2902 type
= check_typedef (type
);
2904 switch (TYPE_CODE (type
))
2906 case TYPE_CODE_ARRAY
:
2907 case TYPE_CODE_STRUCT
:
2908 case TYPE_CODE_UNION
:
2910 case TYPE_CODE_STRING
:
2917 /* Return true if T is scalar, or a composite type which in practice has
2918 the memory layout of a scalar type. E.g., an array or struct with only
2919 one scalar element inside it, or a union with only scalar elements. */
2922 is_scalar_type_recursive (struct type
*t
)
2924 t
= check_typedef (t
);
2926 if (is_scalar_type (t
))
2928 /* Are we dealing with an array or string of known dimensions? */
2929 else if ((TYPE_CODE (t
) == TYPE_CODE_ARRAY
2930 || TYPE_CODE (t
) == TYPE_CODE_STRING
) && TYPE_NFIELDS (t
) == 1
2931 && TYPE_CODE (TYPE_INDEX_TYPE (t
)) == TYPE_CODE_RANGE
)
2933 LONGEST low_bound
, high_bound
;
2934 struct type
*elt_type
= check_typedef (TYPE_TARGET_TYPE (t
));
2936 get_discrete_bounds (TYPE_INDEX_TYPE (t
), &low_bound
, &high_bound
);
2938 return high_bound
== low_bound
&& is_scalar_type_recursive (elt_type
);
2940 /* Are we dealing with a struct with one element? */
2941 else if (TYPE_CODE (t
) == TYPE_CODE_STRUCT
&& TYPE_NFIELDS (t
) == 1)
2942 return is_scalar_type_recursive (TYPE_FIELD_TYPE (t
, 0));
2943 else if (TYPE_CODE (t
) == TYPE_CODE_UNION
)
2945 int i
, n
= TYPE_NFIELDS (t
);
2947 /* If all elements of the union are scalar, then the union is scalar. */
2948 for (i
= 0; i
< n
; i
++)
2949 if (!is_scalar_type_recursive (TYPE_FIELD_TYPE (t
, i
)))
2958 /* Return true is T is a class or a union. False otherwise. */
2961 class_or_union_p (const struct type
*t
)
2963 return (TYPE_CODE (t
) == TYPE_CODE_STRUCT
2964 || TYPE_CODE (t
) == TYPE_CODE_UNION
);
2967 /* A helper function which returns true if types A and B represent the
2968 "same" class type. This is true if the types have the same main
2969 type, or the same name. */
2972 class_types_same_p (const struct type
*a
, const struct type
*b
)
2974 return (TYPE_MAIN_TYPE (a
) == TYPE_MAIN_TYPE (b
)
2975 || (TYPE_NAME (a
) && TYPE_NAME (b
)
2976 && !strcmp (TYPE_NAME (a
), TYPE_NAME (b
))));
2979 /* If BASE is an ancestor of DCLASS return the distance between them.
2980 otherwise return -1;
2984 class B: public A {};
2985 class C: public B {};
2988 distance_to_ancestor (A, A, 0) = 0
2989 distance_to_ancestor (A, B, 0) = 1
2990 distance_to_ancestor (A, C, 0) = 2
2991 distance_to_ancestor (A, D, 0) = 3
2993 If PUBLIC is 1 then only public ancestors are considered,
2994 and the function returns the distance only if BASE is a public ancestor
2998 distance_to_ancestor (A, D, 1) = -1. */
3001 distance_to_ancestor (struct type
*base
, struct type
*dclass
, int is_public
)
3006 base
= check_typedef (base
);
3007 dclass
= check_typedef (dclass
);
3009 if (class_types_same_p (base
, dclass
))
3012 for (i
= 0; i
< TYPE_N_BASECLASSES (dclass
); i
++)
3014 if (is_public
&& ! BASETYPE_VIA_PUBLIC (dclass
, i
))
3017 d
= distance_to_ancestor (base
, TYPE_BASECLASS (dclass
, i
), is_public
);
3025 /* Check whether BASE is an ancestor or base class or DCLASS
3026 Return 1 if so, and 0 if not.
3027 Note: If BASE and DCLASS are of the same type, this function
3028 will return 1. So for some class A, is_ancestor (A, A) will
3032 is_ancestor (struct type
*base
, struct type
*dclass
)
3034 return distance_to_ancestor (base
, dclass
, 0) >= 0;
3037 /* Like is_ancestor, but only returns true when BASE is a public
3038 ancestor of DCLASS. */
3041 is_public_ancestor (struct type
*base
, struct type
*dclass
)
3043 return distance_to_ancestor (base
, dclass
, 1) >= 0;
3046 /* A helper function for is_unique_ancestor. */
3049 is_unique_ancestor_worker (struct type
*base
, struct type
*dclass
,
3051 const gdb_byte
*valaddr
, int embedded_offset
,
3052 CORE_ADDR address
, struct value
*val
)
3056 base
= check_typedef (base
);
3057 dclass
= check_typedef (dclass
);
3059 for (i
= 0; i
< TYPE_N_BASECLASSES (dclass
) && count
< 2; ++i
)
3064 iter
= check_typedef (TYPE_BASECLASS (dclass
, i
));
3066 this_offset
= baseclass_offset (dclass
, i
, valaddr
, embedded_offset
,
3069 if (class_types_same_p (base
, iter
))
3071 /* If this is the first subclass, set *OFFSET and set count
3072 to 1. Otherwise, if this is at the same offset as
3073 previous instances, do nothing. Otherwise, increment
3077 *offset
= this_offset
;
3080 else if (this_offset
== *offset
)
3088 count
+= is_unique_ancestor_worker (base
, iter
, offset
,
3090 embedded_offset
+ this_offset
,
3097 /* Like is_ancestor, but only returns true if BASE is a unique base
3098 class of the type of VAL. */
3101 is_unique_ancestor (struct type
*base
, struct value
*val
)
3105 return is_unique_ancestor_worker (base
, value_type (val
), &offset
,
3106 value_contents_for_printing (val
),
3107 value_embedded_offset (val
),
3108 value_address (val
), val
) == 1;
3112 /* Overload resolution. */
3114 /* Return the sum of the rank of A with the rank of B. */
3117 sum_ranks (struct rank a
, struct rank b
)
3120 c
.rank
= a
.rank
+ b
.rank
;
3121 c
.subrank
= a
.subrank
+ b
.subrank
;
3125 /* Compare rank A and B and return:
3127 1 if a is better than b
3128 -1 if b is better than a. */
3131 compare_ranks (struct rank a
, struct rank b
)
3133 if (a
.rank
== b
.rank
)
3135 if (a
.subrank
== b
.subrank
)
3137 if (a
.subrank
< b
.subrank
)
3139 if (a
.subrank
> b
.subrank
)
3143 if (a
.rank
< b
.rank
)
3146 /* a.rank > b.rank */
3150 /* Functions for overload resolution begin here. */
3152 /* Compare two badness vectors A and B and return the result.
3153 0 => A and B are identical
3154 1 => A and B are incomparable
3155 2 => A is better than B
3156 3 => A is worse than B */
3159 compare_badness (struct badness_vector
*a
, struct badness_vector
*b
)
3163 short found_pos
= 0; /* any positives in c? */
3164 short found_neg
= 0; /* any negatives in c? */
3166 /* differing lengths => incomparable */
3167 if (a
->length
!= b
->length
)
3170 /* Subtract b from a */
3171 for (i
= 0; i
< a
->length
; i
++)
3173 tmp
= compare_ranks (b
->rank
[i
], a
->rank
[i
]);
3183 return 1; /* incomparable */
3185 return 3; /* A > B */
3191 return 2; /* A < B */
3193 return 0; /* A == B */
3197 /* Rank a function by comparing its parameter types (PARMS, length
3198 NPARMS), to the types of an argument list (ARGS, length NARGS).
3199 Return a pointer to a badness vector. This has NARGS + 1
3202 struct badness_vector
*
3203 rank_function (struct type
**parms
, int nparms
,
3204 struct value
**args
, int nargs
)
3207 struct badness_vector
*bv
= XNEW (struct badness_vector
);
3208 int min_len
= nparms
< nargs
? nparms
: nargs
;
3210 bv
->length
= nargs
+ 1; /* add 1 for the length-match rank. */
3211 bv
->rank
= XNEWVEC (struct rank
, nargs
+ 1);
3213 /* First compare the lengths of the supplied lists.
3214 If there is a mismatch, set it to a high value. */
3216 /* pai/1997-06-03 FIXME: when we have debug info about default
3217 arguments and ellipsis parameter lists, we should consider those
3218 and rank the length-match more finely. */
3220 LENGTH_MATCH (bv
) = (nargs
!= nparms
)
3221 ? LENGTH_MISMATCH_BADNESS
3222 : EXACT_MATCH_BADNESS
;
3224 /* Now rank all the parameters of the candidate function. */
3225 for (i
= 1; i
<= min_len
; i
++)
3226 bv
->rank
[i
] = rank_one_type (parms
[i
- 1], value_type (args
[i
- 1]),
3229 /* If more arguments than parameters, add dummy entries. */
3230 for (i
= min_len
+ 1; i
<= nargs
; i
++)
3231 bv
->rank
[i
] = TOO_FEW_PARAMS_BADNESS
;
3236 /* Compare the names of two integer types, assuming that any sign
3237 qualifiers have been checked already. We do it this way because
3238 there may be an "int" in the name of one of the types. */
3241 integer_types_same_name_p (const char *first
, const char *second
)
3243 int first_p
, second_p
;
3245 /* If both are shorts, return 1; if neither is a short, keep
3247 first_p
= (strstr (first
, "short") != NULL
);
3248 second_p
= (strstr (second
, "short") != NULL
);
3249 if (first_p
&& second_p
)
3251 if (first_p
|| second_p
)
3254 /* Likewise for long. */
3255 first_p
= (strstr (first
, "long") != NULL
);
3256 second_p
= (strstr (second
, "long") != NULL
);
3257 if (first_p
&& second_p
)
3259 if (first_p
|| second_p
)
3262 /* Likewise for char. */
3263 first_p
= (strstr (first
, "char") != NULL
);
3264 second_p
= (strstr (second
, "char") != NULL
);
3265 if (first_p
&& second_p
)
3267 if (first_p
|| second_p
)
3270 /* They must both be ints. */
3274 /* Compares type A to type B returns 1 if the represent the same type
3278 types_equal (struct type
*a
, struct type
*b
)
3280 /* Identical type pointers. */
3281 /* However, this still doesn't catch all cases of same type for b
3282 and a. The reason is that builtin types are different from
3283 the same ones constructed from the object. */
3287 /* Resolve typedefs */
3288 if (TYPE_CODE (a
) == TYPE_CODE_TYPEDEF
)
3289 a
= check_typedef (a
);
3290 if (TYPE_CODE (b
) == TYPE_CODE_TYPEDEF
)
3291 b
= check_typedef (b
);
3293 /* If after resolving typedefs a and b are not of the same type
3294 code then they are not equal. */
3295 if (TYPE_CODE (a
) != TYPE_CODE (b
))
3298 /* If a and b are both pointers types or both reference types then
3299 they are equal of the same type iff the objects they refer to are
3300 of the same type. */
3301 if (TYPE_CODE (a
) == TYPE_CODE_PTR
3302 || TYPE_CODE (a
) == TYPE_CODE_REF
)
3303 return types_equal (TYPE_TARGET_TYPE (a
),
3304 TYPE_TARGET_TYPE (b
));
3306 /* Well, damnit, if the names are exactly the same, I'll say they
3307 are exactly the same. This happens when we generate method
3308 stubs. The types won't point to the same address, but they
3309 really are the same. */
3311 if (TYPE_NAME (a
) && TYPE_NAME (b
)
3312 && strcmp (TYPE_NAME (a
), TYPE_NAME (b
)) == 0)
3315 /* Check if identical after resolving typedefs. */
3319 /* Two function types are equal if their argument and return types
3321 if (TYPE_CODE (a
) == TYPE_CODE_FUNC
)
3325 if (TYPE_NFIELDS (a
) != TYPE_NFIELDS (b
))
3328 if (!types_equal (TYPE_TARGET_TYPE (a
), TYPE_TARGET_TYPE (b
)))
3331 for (i
= 0; i
< TYPE_NFIELDS (a
); ++i
)
3332 if (!types_equal (TYPE_FIELD_TYPE (a
, i
), TYPE_FIELD_TYPE (b
, i
)))
3341 /* Deep comparison of types. */
3343 /* An entry in the type-equality bcache. */
3345 typedef struct type_equality_entry
3347 struct type
*type1
, *type2
;
3348 } type_equality_entry_d
;
3350 DEF_VEC_O (type_equality_entry_d
);
3352 /* A helper function to compare two strings. Returns 1 if they are
3353 the same, 0 otherwise. Handles NULLs properly. */
3356 compare_maybe_null_strings (const char *s
, const char *t
)
3358 if (s
== NULL
&& t
!= NULL
)
3360 else if (s
!= NULL
&& t
== NULL
)
3362 else if (s
== NULL
&& t
== NULL
)
3364 return strcmp (s
, t
) == 0;
3367 /* A helper function for check_types_worklist that checks two types for
3368 "deep" equality. Returns non-zero if the types are considered the
3369 same, zero otherwise. */
3372 check_types_equal (struct type
*type1
, struct type
*type2
,
3373 VEC (type_equality_entry_d
) **worklist
)
3375 type1
= check_typedef (type1
);
3376 type2
= check_typedef (type2
);
3381 if (TYPE_CODE (type1
) != TYPE_CODE (type2
)
3382 || TYPE_LENGTH (type1
) != TYPE_LENGTH (type2
)
3383 || TYPE_UNSIGNED (type1
) != TYPE_UNSIGNED (type2
)
3384 || TYPE_NOSIGN (type1
) != TYPE_NOSIGN (type2
)
3385 || TYPE_VARARGS (type1
) != TYPE_VARARGS (type2
)
3386 || TYPE_VECTOR (type1
) != TYPE_VECTOR (type2
)
3387 || TYPE_NOTTEXT (type1
) != TYPE_NOTTEXT (type2
)
3388 || TYPE_INSTANCE_FLAGS (type1
) != TYPE_INSTANCE_FLAGS (type2
)
3389 || TYPE_NFIELDS (type1
) != TYPE_NFIELDS (type2
))
3392 if (!compare_maybe_null_strings (TYPE_TAG_NAME (type1
),
3393 TYPE_TAG_NAME (type2
)))
3395 if (!compare_maybe_null_strings (TYPE_NAME (type1
), TYPE_NAME (type2
)))
3398 if (TYPE_CODE (type1
) == TYPE_CODE_RANGE
)
3400 if (memcmp (TYPE_RANGE_DATA (type1
), TYPE_RANGE_DATA (type2
),
3401 sizeof (*TYPE_RANGE_DATA (type1
))) != 0)
3408 for (i
= 0; i
< TYPE_NFIELDS (type1
); ++i
)
3410 const struct field
*field1
= &TYPE_FIELD (type1
, i
);
3411 const struct field
*field2
= &TYPE_FIELD (type2
, i
);
3412 struct type_equality_entry entry
;
3414 if (FIELD_ARTIFICIAL (*field1
) != FIELD_ARTIFICIAL (*field2
)
3415 || FIELD_BITSIZE (*field1
) != FIELD_BITSIZE (*field2
)
3416 || FIELD_LOC_KIND (*field1
) != FIELD_LOC_KIND (*field2
))
3418 if (!compare_maybe_null_strings (FIELD_NAME (*field1
),
3419 FIELD_NAME (*field2
)))
3421 switch (FIELD_LOC_KIND (*field1
))
3423 case FIELD_LOC_KIND_BITPOS
:
3424 if (FIELD_BITPOS (*field1
) != FIELD_BITPOS (*field2
))
3427 case FIELD_LOC_KIND_ENUMVAL
:
3428 if (FIELD_ENUMVAL (*field1
) != FIELD_ENUMVAL (*field2
))
3431 case FIELD_LOC_KIND_PHYSADDR
:
3432 if (FIELD_STATIC_PHYSADDR (*field1
)
3433 != FIELD_STATIC_PHYSADDR (*field2
))
3436 case FIELD_LOC_KIND_PHYSNAME
:
3437 if (!compare_maybe_null_strings (FIELD_STATIC_PHYSNAME (*field1
),
3438 FIELD_STATIC_PHYSNAME (*field2
)))
3441 case FIELD_LOC_KIND_DWARF_BLOCK
:
3443 struct dwarf2_locexpr_baton
*block1
, *block2
;
3445 block1
= FIELD_DWARF_BLOCK (*field1
);
3446 block2
= FIELD_DWARF_BLOCK (*field2
);
3447 if (block1
->per_cu
!= block2
->per_cu
3448 || block1
->size
!= block2
->size
3449 || memcmp (block1
->data
, block2
->data
, block1
->size
) != 0)
3454 internal_error (__FILE__
, __LINE__
, _("Unsupported field kind "
3455 "%d by check_types_equal"),
3456 FIELD_LOC_KIND (*field1
));
3459 entry
.type1
= FIELD_TYPE (*field1
);
3460 entry
.type2
= FIELD_TYPE (*field2
);
3461 VEC_safe_push (type_equality_entry_d
, *worklist
, &entry
);
3465 if (TYPE_TARGET_TYPE (type1
) != NULL
)
3467 struct type_equality_entry entry
;
3469 if (TYPE_TARGET_TYPE (type2
) == NULL
)
3472 entry
.type1
= TYPE_TARGET_TYPE (type1
);
3473 entry
.type2
= TYPE_TARGET_TYPE (type2
);
3474 VEC_safe_push (type_equality_entry_d
, *worklist
, &entry
);
3476 else if (TYPE_TARGET_TYPE (type2
) != NULL
)
3482 /* Check types on a worklist for equality. Returns zero if any pair
3483 is not equal, non-zero if they are all considered equal. */
3486 check_types_worklist (VEC (type_equality_entry_d
) **worklist
,
3487 struct bcache
*cache
)
3489 while (!VEC_empty (type_equality_entry_d
, *worklist
))
3491 struct type_equality_entry entry
;
3494 entry
= *VEC_last (type_equality_entry_d
, *worklist
);
3495 VEC_pop (type_equality_entry_d
, *worklist
);
3497 /* If the type pair has already been visited, we know it is
3499 bcache_full (&entry
, sizeof (entry
), cache
, &added
);
3503 if (check_types_equal (entry
.type1
, entry
.type2
, worklist
) == 0)
3510 /* Return non-zero if types TYPE1 and TYPE2 are equal, as determined by a
3511 "deep comparison". Otherwise return zero. */
3514 types_deeply_equal (struct type
*type1
, struct type
*type2
)
3516 struct gdb_exception except
= exception_none
;
3518 struct bcache
*cache
;
3519 VEC (type_equality_entry_d
) *worklist
= NULL
;
3520 struct type_equality_entry entry
;
3522 gdb_assert (type1
!= NULL
&& type2
!= NULL
);
3524 /* Early exit for the simple case. */
3528 cache
= bcache_xmalloc (NULL
, NULL
);
3530 entry
.type1
= type1
;
3531 entry
.type2
= type2
;
3532 VEC_safe_push (type_equality_entry_d
, worklist
, &entry
);
3534 /* check_types_worklist calls several nested helper functions, some
3535 of which can raise a GDB exception, so we just check and rethrow
3536 here. If there is a GDB exception, a comparison is not capable
3537 (or trusted), so exit. */
3540 result
= check_types_worklist (&worklist
, cache
);
3542 CATCH (ex
, RETURN_MASK_ALL
)
3548 bcache_xfree (cache
);
3549 VEC_free (type_equality_entry_d
, worklist
);
3551 /* Rethrow if there was a problem. */
3552 if (except
.reason
< 0)
3553 throw_exception (except
);
3558 /* Allocated status of type TYPE. Return zero if type TYPE is allocated.
3559 Otherwise return one. */
3562 type_not_allocated (const struct type
*type
)
3564 struct dynamic_prop
*prop
= TYPE_ALLOCATED_PROP (type
);
3566 return (prop
&& TYPE_DYN_PROP_KIND (prop
) == PROP_CONST
3567 && !TYPE_DYN_PROP_ADDR (prop
));
3570 /* Associated status of type TYPE. Return zero if type TYPE is associated.
3571 Otherwise return one. */
3574 type_not_associated (const struct type
*type
)
3576 struct dynamic_prop
*prop
= TYPE_ASSOCIATED_PROP (type
);
3578 return (prop
&& TYPE_DYN_PROP_KIND (prop
) == PROP_CONST
3579 && !TYPE_DYN_PROP_ADDR (prop
));
3582 /* Compare one type (PARM) for compatibility with another (ARG).
3583 * PARM is intended to be the parameter type of a function; and
3584 * ARG is the supplied argument's type. This function tests if
3585 * the latter can be converted to the former.
3586 * VALUE is the argument's value or NULL if none (or called recursively)
3588 * Return 0 if they are identical types;
3589 * Otherwise, return an integer which corresponds to how compatible
3590 * PARM is to ARG. The higher the return value, the worse the match.
3591 * Generally the "bad" conversions are all uniformly assigned a 100. */
3594 rank_one_type (struct type
*parm
, struct type
*arg
, struct value
*value
)
3596 struct rank rank
= {0,0};
3598 if (types_equal (parm
, arg
))
3599 return EXACT_MATCH_BADNESS
;
3601 /* Resolve typedefs */
3602 if (TYPE_CODE (parm
) == TYPE_CODE_TYPEDEF
)
3603 parm
= check_typedef (parm
);
3604 if (TYPE_CODE (arg
) == TYPE_CODE_TYPEDEF
)
3605 arg
= check_typedef (arg
);
3607 /* See through references, since we can almost make non-references
3609 if (TYPE_CODE (arg
) == TYPE_CODE_REF
)
3610 return (sum_ranks (rank_one_type (parm
, TYPE_TARGET_TYPE (arg
), NULL
),
3611 REFERENCE_CONVERSION_BADNESS
));
3612 if (TYPE_CODE (parm
) == TYPE_CODE_REF
)
3613 return (sum_ranks (rank_one_type (TYPE_TARGET_TYPE (parm
), arg
, NULL
),
3614 REFERENCE_CONVERSION_BADNESS
));
3616 /* Debugging only. */
3617 fprintf_filtered (gdb_stderr
,
3618 "------ Arg is %s [%d], parm is %s [%d]\n",
3619 TYPE_NAME (arg
), TYPE_CODE (arg
),
3620 TYPE_NAME (parm
), TYPE_CODE (parm
));
3622 /* x -> y means arg of type x being supplied for parameter of type y. */
3624 switch (TYPE_CODE (parm
))
3627 switch (TYPE_CODE (arg
))
3631 /* Allowed pointer conversions are:
3632 (a) pointer to void-pointer conversion. */
3633 if (TYPE_CODE (TYPE_TARGET_TYPE (parm
)) == TYPE_CODE_VOID
)
3634 return VOID_PTR_CONVERSION_BADNESS
;
3636 /* (b) pointer to ancestor-pointer conversion. */
3637 rank
.subrank
= distance_to_ancestor (TYPE_TARGET_TYPE (parm
),
3638 TYPE_TARGET_TYPE (arg
),
3640 if (rank
.subrank
>= 0)
3641 return sum_ranks (BASE_PTR_CONVERSION_BADNESS
, rank
);
3643 return INCOMPATIBLE_TYPE_BADNESS
;
3644 case TYPE_CODE_ARRAY
:
3645 if (types_equal (TYPE_TARGET_TYPE (parm
),
3646 TYPE_TARGET_TYPE (arg
)))
3647 return EXACT_MATCH_BADNESS
;
3648 return INCOMPATIBLE_TYPE_BADNESS
;
3649 case TYPE_CODE_FUNC
:
3650 return rank_one_type (TYPE_TARGET_TYPE (parm
), arg
, NULL
);
3652 if (value
!= NULL
&& TYPE_CODE (value_type (value
)) == TYPE_CODE_INT
)
3654 if (value_as_long (value
) == 0)
3656 /* Null pointer conversion: allow it to be cast to a pointer.
3657 [4.10.1 of C++ standard draft n3290] */
3658 return NULL_POINTER_CONVERSION_BADNESS
;
3662 /* If type checking is disabled, allow the conversion. */
3663 if (!strict_type_checking
)
3664 return NS_INTEGER_POINTER_CONVERSION_BADNESS
;
3668 case TYPE_CODE_ENUM
:
3669 case TYPE_CODE_FLAGS
:
3670 case TYPE_CODE_CHAR
:
3671 case TYPE_CODE_RANGE
:
3672 case TYPE_CODE_BOOL
:
3674 return INCOMPATIBLE_TYPE_BADNESS
;
3676 case TYPE_CODE_ARRAY
:
3677 switch (TYPE_CODE (arg
))
3680 case TYPE_CODE_ARRAY
:
3681 return rank_one_type (TYPE_TARGET_TYPE (parm
),
3682 TYPE_TARGET_TYPE (arg
), NULL
);
3684 return INCOMPATIBLE_TYPE_BADNESS
;
3686 case TYPE_CODE_FUNC
:
3687 switch (TYPE_CODE (arg
))
3689 case TYPE_CODE_PTR
: /* funcptr -> func */
3690 return rank_one_type (parm
, TYPE_TARGET_TYPE (arg
), NULL
);
3692 return INCOMPATIBLE_TYPE_BADNESS
;
3695 switch (TYPE_CODE (arg
))
3698 if (TYPE_LENGTH (arg
) == TYPE_LENGTH (parm
))
3700 /* Deal with signed, unsigned, and plain chars and
3701 signed and unsigned ints. */
3702 if (TYPE_NOSIGN (parm
))
3704 /* This case only for character types. */
3705 if (TYPE_NOSIGN (arg
))
3706 return EXACT_MATCH_BADNESS
; /* plain char -> plain char */
3707 else /* signed/unsigned char -> plain char */
3708 return INTEGER_CONVERSION_BADNESS
;
3710 else if (TYPE_UNSIGNED (parm
))
3712 if (TYPE_UNSIGNED (arg
))
3714 /* unsigned int -> unsigned int, or
3715 unsigned long -> unsigned long */
3716 if (integer_types_same_name_p (TYPE_NAME (parm
),
3718 return EXACT_MATCH_BADNESS
;
3719 else if (integer_types_same_name_p (TYPE_NAME (arg
),
3721 && integer_types_same_name_p (TYPE_NAME (parm
),
3723 /* unsigned int -> unsigned long */
3724 return INTEGER_PROMOTION_BADNESS
;
3726 /* unsigned long -> unsigned int */
3727 return INTEGER_CONVERSION_BADNESS
;
3731 if (integer_types_same_name_p (TYPE_NAME (arg
),
3733 && integer_types_same_name_p (TYPE_NAME (parm
),
3735 /* signed long -> unsigned int */
3736 return INTEGER_CONVERSION_BADNESS
;
3738 /* signed int/long -> unsigned int/long */
3739 return INTEGER_CONVERSION_BADNESS
;
3742 else if (!TYPE_NOSIGN (arg
) && !TYPE_UNSIGNED (arg
))
3744 if (integer_types_same_name_p (TYPE_NAME (parm
),
3746 return EXACT_MATCH_BADNESS
;
3747 else if (integer_types_same_name_p (TYPE_NAME (arg
),
3749 && integer_types_same_name_p (TYPE_NAME (parm
),
3751 return INTEGER_PROMOTION_BADNESS
;
3753 return INTEGER_CONVERSION_BADNESS
;
3756 return INTEGER_CONVERSION_BADNESS
;
3758 else if (TYPE_LENGTH (arg
) < TYPE_LENGTH (parm
))
3759 return INTEGER_PROMOTION_BADNESS
;
3761 return INTEGER_CONVERSION_BADNESS
;
3762 case TYPE_CODE_ENUM
:
3763 case TYPE_CODE_FLAGS
:
3764 case TYPE_CODE_CHAR
:
3765 case TYPE_CODE_RANGE
:
3766 case TYPE_CODE_BOOL
:
3767 if (TYPE_DECLARED_CLASS (arg
))
3768 return INCOMPATIBLE_TYPE_BADNESS
;
3769 return INTEGER_PROMOTION_BADNESS
;
3771 return INT_FLOAT_CONVERSION_BADNESS
;
3773 return NS_POINTER_CONVERSION_BADNESS
;
3775 return INCOMPATIBLE_TYPE_BADNESS
;
3778 case TYPE_CODE_ENUM
:
3779 switch (TYPE_CODE (arg
))
3782 case TYPE_CODE_CHAR
:
3783 case TYPE_CODE_RANGE
:
3784 case TYPE_CODE_BOOL
:
3785 case TYPE_CODE_ENUM
:
3786 if (TYPE_DECLARED_CLASS (parm
) || TYPE_DECLARED_CLASS (arg
))
3787 return INCOMPATIBLE_TYPE_BADNESS
;
3788 return INTEGER_CONVERSION_BADNESS
;
3790 return INT_FLOAT_CONVERSION_BADNESS
;
3792 return INCOMPATIBLE_TYPE_BADNESS
;
3795 case TYPE_CODE_CHAR
:
3796 switch (TYPE_CODE (arg
))
3798 case TYPE_CODE_RANGE
:
3799 case TYPE_CODE_BOOL
:
3800 case TYPE_CODE_ENUM
:
3801 if (TYPE_DECLARED_CLASS (arg
))
3802 return INCOMPATIBLE_TYPE_BADNESS
;
3803 return INTEGER_CONVERSION_BADNESS
;
3805 return INT_FLOAT_CONVERSION_BADNESS
;
3807 if (TYPE_LENGTH (arg
) > TYPE_LENGTH (parm
))
3808 return INTEGER_CONVERSION_BADNESS
;
3809 else if (TYPE_LENGTH (arg
) < TYPE_LENGTH (parm
))
3810 return INTEGER_PROMOTION_BADNESS
;
3811 /* >>> !! else fall through !! <<< */
3812 case TYPE_CODE_CHAR
:
3813 /* Deal with signed, unsigned, and plain chars for C++ and
3814 with int cases falling through from previous case. */
3815 if (TYPE_NOSIGN (parm
))
3817 if (TYPE_NOSIGN (arg
))
3818 return EXACT_MATCH_BADNESS
;
3820 return INTEGER_CONVERSION_BADNESS
;
3822 else if (TYPE_UNSIGNED (parm
))
3824 if (TYPE_UNSIGNED (arg
))
3825 return EXACT_MATCH_BADNESS
;
3827 return INTEGER_PROMOTION_BADNESS
;
3829 else if (!TYPE_NOSIGN (arg
) && !TYPE_UNSIGNED (arg
))
3830 return EXACT_MATCH_BADNESS
;
3832 return INTEGER_CONVERSION_BADNESS
;
3834 return INCOMPATIBLE_TYPE_BADNESS
;
3837 case TYPE_CODE_RANGE
:
3838 switch (TYPE_CODE (arg
))
3841 case TYPE_CODE_CHAR
:
3842 case TYPE_CODE_RANGE
:
3843 case TYPE_CODE_BOOL
:
3844 case TYPE_CODE_ENUM
:
3845 return INTEGER_CONVERSION_BADNESS
;
3847 return INT_FLOAT_CONVERSION_BADNESS
;
3849 return INCOMPATIBLE_TYPE_BADNESS
;
3852 case TYPE_CODE_BOOL
:
3853 switch (TYPE_CODE (arg
))
3855 /* n3290 draft, section 4.12.1 (conv.bool):
3857 "A prvalue of arithmetic, unscoped enumeration, pointer, or
3858 pointer to member type can be converted to a prvalue of type
3859 bool. A zero value, null pointer value, or null member pointer
3860 value is converted to false; any other value is converted to
3861 true. A prvalue of type std::nullptr_t can be converted to a
3862 prvalue of type bool; the resulting value is false." */
3864 case TYPE_CODE_CHAR
:
3865 case TYPE_CODE_ENUM
:
3867 case TYPE_CODE_MEMBERPTR
:
3869 return BOOL_CONVERSION_BADNESS
;
3870 case TYPE_CODE_RANGE
:
3871 return INCOMPATIBLE_TYPE_BADNESS
;
3872 case TYPE_CODE_BOOL
:
3873 return EXACT_MATCH_BADNESS
;
3875 return INCOMPATIBLE_TYPE_BADNESS
;
3879 switch (TYPE_CODE (arg
))
3882 if (TYPE_LENGTH (arg
) < TYPE_LENGTH (parm
))
3883 return FLOAT_PROMOTION_BADNESS
;
3884 else if (TYPE_LENGTH (arg
) == TYPE_LENGTH (parm
))
3885 return EXACT_MATCH_BADNESS
;
3887 return FLOAT_CONVERSION_BADNESS
;
3889 case TYPE_CODE_BOOL
:
3890 case TYPE_CODE_ENUM
:
3891 case TYPE_CODE_RANGE
:
3892 case TYPE_CODE_CHAR
:
3893 return INT_FLOAT_CONVERSION_BADNESS
;
3895 return INCOMPATIBLE_TYPE_BADNESS
;
3898 case TYPE_CODE_COMPLEX
:
3899 switch (TYPE_CODE (arg
))
3900 { /* Strictly not needed for C++, but... */
3902 return FLOAT_PROMOTION_BADNESS
;
3903 case TYPE_CODE_COMPLEX
:
3904 return EXACT_MATCH_BADNESS
;
3906 return INCOMPATIBLE_TYPE_BADNESS
;
3909 case TYPE_CODE_STRUCT
:
3910 switch (TYPE_CODE (arg
))
3912 case TYPE_CODE_STRUCT
:
3913 /* Check for derivation */
3914 rank
.subrank
= distance_to_ancestor (parm
, arg
, 0);
3915 if (rank
.subrank
>= 0)
3916 return sum_ranks (BASE_CONVERSION_BADNESS
, rank
);
3917 /* else fall through */
3919 return INCOMPATIBLE_TYPE_BADNESS
;
3922 case TYPE_CODE_UNION
:
3923 switch (TYPE_CODE (arg
))
3925 case TYPE_CODE_UNION
:
3927 return INCOMPATIBLE_TYPE_BADNESS
;
3930 case TYPE_CODE_MEMBERPTR
:
3931 switch (TYPE_CODE (arg
))
3934 return INCOMPATIBLE_TYPE_BADNESS
;
3937 case TYPE_CODE_METHOD
:
3938 switch (TYPE_CODE (arg
))
3942 return INCOMPATIBLE_TYPE_BADNESS
;
3946 switch (TYPE_CODE (arg
))
3950 return INCOMPATIBLE_TYPE_BADNESS
;
3955 switch (TYPE_CODE (arg
))
3959 return rank_one_type (TYPE_FIELD_TYPE (parm
, 0),
3960 TYPE_FIELD_TYPE (arg
, 0), NULL
);
3962 return INCOMPATIBLE_TYPE_BADNESS
;
3965 case TYPE_CODE_VOID
:
3967 return INCOMPATIBLE_TYPE_BADNESS
;
3968 } /* switch (TYPE_CODE (arg)) */
3971 /* End of functions for overload resolution. */
3973 /* Routines to pretty-print types. */
3976 print_bit_vector (B_TYPE
*bits
, int nbits
)
3980 for (bitno
= 0; bitno
< nbits
; bitno
++)
3982 if ((bitno
% 8) == 0)
3984 puts_filtered (" ");
3986 if (B_TST (bits
, bitno
))
3987 printf_filtered (("1"));
3989 printf_filtered (("0"));
3993 /* Note the first arg should be the "this" pointer, we may not want to
3994 include it since we may get into a infinitely recursive
3998 print_args (struct field
*args
, int nargs
, int spaces
)
4004 for (i
= 0; i
< nargs
; i
++)
4006 printfi_filtered (spaces
, "[%d] name '%s'\n", i
,
4007 args
[i
].name
!= NULL
? args
[i
].name
: "<NULL>");
4008 recursive_dump_type (args
[i
].type
, spaces
+ 2);
4014 field_is_static (struct field
*f
)
4016 /* "static" fields are the fields whose location is not relative
4017 to the address of the enclosing struct. It would be nice to
4018 have a dedicated flag that would be set for static fields when
4019 the type is being created. But in practice, checking the field
4020 loc_kind should give us an accurate answer. */
4021 return (FIELD_LOC_KIND (*f
) == FIELD_LOC_KIND_PHYSNAME
4022 || FIELD_LOC_KIND (*f
) == FIELD_LOC_KIND_PHYSADDR
);
4026 dump_fn_fieldlists (struct type
*type
, int spaces
)
4032 printfi_filtered (spaces
, "fn_fieldlists ");
4033 gdb_print_host_address (TYPE_FN_FIELDLISTS (type
), gdb_stdout
);
4034 printf_filtered ("\n");
4035 for (method_idx
= 0; method_idx
< TYPE_NFN_FIELDS (type
); method_idx
++)
4037 f
= TYPE_FN_FIELDLIST1 (type
, method_idx
);
4038 printfi_filtered (spaces
+ 2, "[%d] name '%s' (",
4040 TYPE_FN_FIELDLIST_NAME (type
, method_idx
));
4041 gdb_print_host_address (TYPE_FN_FIELDLIST_NAME (type
, method_idx
),
4043 printf_filtered (_(") length %d\n"),
4044 TYPE_FN_FIELDLIST_LENGTH (type
, method_idx
));
4045 for (overload_idx
= 0;
4046 overload_idx
< TYPE_FN_FIELDLIST_LENGTH (type
, method_idx
);
4049 printfi_filtered (spaces
+ 4, "[%d] physname '%s' (",
4051 TYPE_FN_FIELD_PHYSNAME (f
, overload_idx
));
4052 gdb_print_host_address (TYPE_FN_FIELD_PHYSNAME (f
, overload_idx
),
4054 printf_filtered (")\n");
4055 printfi_filtered (spaces
+ 8, "type ");
4056 gdb_print_host_address (TYPE_FN_FIELD_TYPE (f
, overload_idx
),
4058 printf_filtered ("\n");
4060 recursive_dump_type (TYPE_FN_FIELD_TYPE (f
, overload_idx
),
4063 printfi_filtered (spaces
+ 8, "args ");
4064 gdb_print_host_address (TYPE_FN_FIELD_ARGS (f
, overload_idx
),
4066 printf_filtered ("\n");
4067 print_args (TYPE_FN_FIELD_ARGS (f
, overload_idx
),
4068 TYPE_NFIELDS (TYPE_FN_FIELD_TYPE (f
, overload_idx
)),
4070 printfi_filtered (spaces
+ 8, "fcontext ");
4071 gdb_print_host_address (TYPE_FN_FIELD_FCONTEXT (f
, overload_idx
),
4073 printf_filtered ("\n");
4075 printfi_filtered (spaces
+ 8, "is_const %d\n",
4076 TYPE_FN_FIELD_CONST (f
, overload_idx
));
4077 printfi_filtered (spaces
+ 8, "is_volatile %d\n",
4078 TYPE_FN_FIELD_VOLATILE (f
, overload_idx
));
4079 printfi_filtered (spaces
+ 8, "is_private %d\n",
4080 TYPE_FN_FIELD_PRIVATE (f
, overload_idx
));
4081 printfi_filtered (spaces
+ 8, "is_protected %d\n",
4082 TYPE_FN_FIELD_PROTECTED (f
, overload_idx
));
4083 printfi_filtered (spaces
+ 8, "is_stub %d\n",
4084 TYPE_FN_FIELD_STUB (f
, overload_idx
));
4085 printfi_filtered (spaces
+ 8, "voffset %u\n",
4086 TYPE_FN_FIELD_VOFFSET (f
, overload_idx
));
4092 print_cplus_stuff (struct type
*type
, int spaces
)
4094 printfi_filtered (spaces
, "vptr_fieldno %d\n", TYPE_VPTR_FIELDNO (type
));
4095 printfi_filtered (spaces
, "vptr_basetype ");
4096 gdb_print_host_address (TYPE_VPTR_BASETYPE (type
), gdb_stdout
);
4097 puts_filtered ("\n");
4098 if (TYPE_VPTR_BASETYPE (type
) != NULL
)
4099 recursive_dump_type (TYPE_VPTR_BASETYPE (type
), spaces
+ 2);
4101 printfi_filtered (spaces
, "n_baseclasses %d\n",
4102 TYPE_N_BASECLASSES (type
));
4103 printfi_filtered (spaces
, "nfn_fields %d\n",
4104 TYPE_NFN_FIELDS (type
));
4105 if (TYPE_N_BASECLASSES (type
) > 0)
4107 printfi_filtered (spaces
, "virtual_field_bits (%d bits at *",
4108 TYPE_N_BASECLASSES (type
));
4109 gdb_print_host_address (TYPE_FIELD_VIRTUAL_BITS (type
),
4111 printf_filtered (")");
4113 print_bit_vector (TYPE_FIELD_VIRTUAL_BITS (type
),
4114 TYPE_N_BASECLASSES (type
));
4115 puts_filtered ("\n");
4117 if (TYPE_NFIELDS (type
) > 0)
4119 if (TYPE_FIELD_PRIVATE_BITS (type
) != NULL
)
4121 printfi_filtered (spaces
,
4122 "private_field_bits (%d bits at *",
4123 TYPE_NFIELDS (type
));
4124 gdb_print_host_address (TYPE_FIELD_PRIVATE_BITS (type
),
4126 printf_filtered (")");
4127 print_bit_vector (TYPE_FIELD_PRIVATE_BITS (type
),
4128 TYPE_NFIELDS (type
));
4129 puts_filtered ("\n");
4131 if (TYPE_FIELD_PROTECTED_BITS (type
) != NULL
)
4133 printfi_filtered (spaces
,
4134 "protected_field_bits (%d bits at *",
4135 TYPE_NFIELDS (type
));
4136 gdb_print_host_address (TYPE_FIELD_PROTECTED_BITS (type
),
4138 printf_filtered (")");
4139 print_bit_vector (TYPE_FIELD_PROTECTED_BITS (type
),
4140 TYPE_NFIELDS (type
));
4141 puts_filtered ("\n");
4144 if (TYPE_NFN_FIELDS (type
) > 0)
4146 dump_fn_fieldlists (type
, spaces
);
4150 /* Print the contents of the TYPE's type_specific union, assuming that
4151 its type-specific kind is TYPE_SPECIFIC_GNAT_STUFF. */
4154 print_gnat_stuff (struct type
*type
, int spaces
)
4156 struct type
*descriptive_type
= TYPE_DESCRIPTIVE_TYPE (type
);
4158 if (descriptive_type
== NULL
)
4159 printfi_filtered (spaces
+ 2, "no descriptive type\n");
4162 printfi_filtered (spaces
+ 2, "descriptive type\n");
4163 recursive_dump_type (descriptive_type
, spaces
+ 4);
4167 static struct obstack dont_print_type_obstack
;
4170 recursive_dump_type (struct type
*type
, int spaces
)
4175 obstack_begin (&dont_print_type_obstack
, 0);
4177 if (TYPE_NFIELDS (type
) > 0
4178 || (HAVE_CPLUS_STRUCT (type
) && TYPE_NFN_FIELDS (type
) > 0))
4180 struct type
**first_dont_print
4181 = (struct type
**) obstack_base (&dont_print_type_obstack
);
4183 int i
= (struct type
**)
4184 obstack_next_free (&dont_print_type_obstack
) - first_dont_print
;
4188 if (type
== first_dont_print
[i
])
4190 printfi_filtered (spaces
, "type node ");
4191 gdb_print_host_address (type
, gdb_stdout
);
4192 printf_filtered (_(" <same as already seen type>\n"));
4197 obstack_ptr_grow (&dont_print_type_obstack
, type
);
4200 printfi_filtered (spaces
, "type node ");
4201 gdb_print_host_address (type
, gdb_stdout
);
4202 printf_filtered ("\n");
4203 printfi_filtered (spaces
, "name '%s' (",
4204 TYPE_NAME (type
) ? TYPE_NAME (type
) : "<NULL>");
4205 gdb_print_host_address (TYPE_NAME (type
), gdb_stdout
);
4206 printf_filtered (")\n");
4207 printfi_filtered (spaces
, "tagname '%s' (",
4208 TYPE_TAG_NAME (type
) ? TYPE_TAG_NAME (type
) : "<NULL>");
4209 gdb_print_host_address (TYPE_TAG_NAME (type
), gdb_stdout
);
4210 printf_filtered (")\n");
4211 printfi_filtered (spaces
, "code 0x%x ", TYPE_CODE (type
));
4212 switch (TYPE_CODE (type
))
4214 case TYPE_CODE_UNDEF
:
4215 printf_filtered ("(TYPE_CODE_UNDEF)");
4218 printf_filtered ("(TYPE_CODE_PTR)");
4220 case TYPE_CODE_ARRAY
:
4221 printf_filtered ("(TYPE_CODE_ARRAY)");
4223 case TYPE_CODE_STRUCT
:
4224 printf_filtered ("(TYPE_CODE_STRUCT)");
4226 case TYPE_CODE_UNION
:
4227 printf_filtered ("(TYPE_CODE_UNION)");
4229 case TYPE_CODE_ENUM
:
4230 printf_filtered ("(TYPE_CODE_ENUM)");
4232 case TYPE_CODE_FLAGS
:
4233 printf_filtered ("(TYPE_CODE_FLAGS)");
4235 case TYPE_CODE_FUNC
:
4236 printf_filtered ("(TYPE_CODE_FUNC)");
4239 printf_filtered ("(TYPE_CODE_INT)");
4242 printf_filtered ("(TYPE_CODE_FLT)");
4244 case TYPE_CODE_VOID
:
4245 printf_filtered ("(TYPE_CODE_VOID)");
4248 printf_filtered ("(TYPE_CODE_SET)");
4250 case TYPE_CODE_RANGE
:
4251 printf_filtered ("(TYPE_CODE_RANGE)");
4253 case TYPE_CODE_STRING
:
4254 printf_filtered ("(TYPE_CODE_STRING)");
4256 case TYPE_CODE_ERROR
:
4257 printf_filtered ("(TYPE_CODE_ERROR)");
4259 case TYPE_CODE_MEMBERPTR
:
4260 printf_filtered ("(TYPE_CODE_MEMBERPTR)");
4262 case TYPE_CODE_METHODPTR
:
4263 printf_filtered ("(TYPE_CODE_METHODPTR)");
4265 case TYPE_CODE_METHOD
:
4266 printf_filtered ("(TYPE_CODE_METHOD)");
4269 printf_filtered ("(TYPE_CODE_REF)");
4271 case TYPE_CODE_CHAR
:
4272 printf_filtered ("(TYPE_CODE_CHAR)");
4274 case TYPE_CODE_BOOL
:
4275 printf_filtered ("(TYPE_CODE_BOOL)");
4277 case TYPE_CODE_COMPLEX
:
4278 printf_filtered ("(TYPE_CODE_COMPLEX)");
4280 case TYPE_CODE_TYPEDEF
:
4281 printf_filtered ("(TYPE_CODE_TYPEDEF)");
4283 case TYPE_CODE_NAMESPACE
:
4284 printf_filtered ("(TYPE_CODE_NAMESPACE)");
4287 printf_filtered ("(UNKNOWN TYPE CODE)");
4290 puts_filtered ("\n");
4291 printfi_filtered (spaces
, "length %d\n", TYPE_LENGTH (type
));
4292 if (TYPE_OBJFILE_OWNED (type
))
4294 printfi_filtered (spaces
, "objfile ");
4295 gdb_print_host_address (TYPE_OWNER (type
).objfile
, gdb_stdout
);
4299 printfi_filtered (spaces
, "gdbarch ");
4300 gdb_print_host_address (TYPE_OWNER (type
).gdbarch
, gdb_stdout
);
4302 printf_filtered ("\n");
4303 printfi_filtered (spaces
, "target_type ");
4304 gdb_print_host_address (TYPE_TARGET_TYPE (type
), gdb_stdout
);
4305 printf_filtered ("\n");
4306 if (TYPE_TARGET_TYPE (type
) != NULL
)
4308 recursive_dump_type (TYPE_TARGET_TYPE (type
), spaces
+ 2);
4310 printfi_filtered (spaces
, "pointer_type ");
4311 gdb_print_host_address (TYPE_POINTER_TYPE (type
), gdb_stdout
);
4312 printf_filtered ("\n");
4313 printfi_filtered (spaces
, "reference_type ");
4314 gdb_print_host_address (TYPE_REFERENCE_TYPE (type
), gdb_stdout
);
4315 printf_filtered ("\n");
4316 printfi_filtered (spaces
, "type_chain ");
4317 gdb_print_host_address (TYPE_CHAIN (type
), gdb_stdout
);
4318 printf_filtered ("\n");
4319 printfi_filtered (spaces
, "instance_flags 0x%x",
4320 TYPE_INSTANCE_FLAGS (type
));
4321 if (TYPE_CONST (type
))
4323 puts_filtered (" TYPE_CONST");
4325 if (TYPE_VOLATILE (type
))
4327 puts_filtered (" TYPE_VOLATILE");
4329 if (TYPE_CODE_SPACE (type
))
4331 puts_filtered (" TYPE_CODE_SPACE");
4333 if (TYPE_DATA_SPACE (type
))
4335 puts_filtered (" TYPE_DATA_SPACE");
4337 if (TYPE_ADDRESS_CLASS_1 (type
))
4339 puts_filtered (" TYPE_ADDRESS_CLASS_1");
4341 if (TYPE_ADDRESS_CLASS_2 (type
))
4343 puts_filtered (" TYPE_ADDRESS_CLASS_2");
4345 if (TYPE_RESTRICT (type
))
4347 puts_filtered (" TYPE_RESTRICT");
4349 if (TYPE_ATOMIC (type
))
4351 puts_filtered (" TYPE_ATOMIC");
4353 puts_filtered ("\n");
4355 printfi_filtered (spaces
, "flags");
4356 if (TYPE_UNSIGNED (type
))
4358 puts_filtered (" TYPE_UNSIGNED");
4360 if (TYPE_NOSIGN (type
))
4362 puts_filtered (" TYPE_NOSIGN");
4364 if (TYPE_STUB (type
))
4366 puts_filtered (" TYPE_STUB");
4368 if (TYPE_TARGET_STUB (type
))
4370 puts_filtered (" TYPE_TARGET_STUB");
4372 if (TYPE_STATIC (type
))
4374 puts_filtered (" TYPE_STATIC");
4376 if (TYPE_PROTOTYPED (type
))
4378 puts_filtered (" TYPE_PROTOTYPED");
4380 if (TYPE_INCOMPLETE (type
))
4382 puts_filtered (" TYPE_INCOMPLETE");
4384 if (TYPE_VARARGS (type
))
4386 puts_filtered (" TYPE_VARARGS");
4388 /* This is used for things like AltiVec registers on ppc. Gcc emits
4389 an attribute for the array type, which tells whether or not we
4390 have a vector, instead of a regular array. */
4391 if (TYPE_VECTOR (type
))
4393 puts_filtered (" TYPE_VECTOR");
4395 if (TYPE_FIXED_INSTANCE (type
))
4397 puts_filtered (" TYPE_FIXED_INSTANCE");
4399 if (TYPE_STUB_SUPPORTED (type
))
4401 puts_filtered (" TYPE_STUB_SUPPORTED");
4403 if (TYPE_NOTTEXT (type
))
4405 puts_filtered (" TYPE_NOTTEXT");
4407 puts_filtered ("\n");
4408 printfi_filtered (spaces
, "nfields %d ", TYPE_NFIELDS (type
));
4409 gdb_print_host_address (TYPE_FIELDS (type
), gdb_stdout
);
4410 puts_filtered ("\n");
4411 for (idx
= 0; idx
< TYPE_NFIELDS (type
); idx
++)
4413 if (TYPE_CODE (type
) == TYPE_CODE_ENUM
)
4414 printfi_filtered (spaces
+ 2,
4415 "[%d] enumval %s type ",
4416 idx
, plongest (TYPE_FIELD_ENUMVAL (type
, idx
)));
4418 printfi_filtered (spaces
+ 2,
4419 "[%d] bitpos %s bitsize %d type ",
4420 idx
, plongest (TYPE_FIELD_BITPOS (type
, idx
)),
4421 TYPE_FIELD_BITSIZE (type
, idx
));
4422 gdb_print_host_address (TYPE_FIELD_TYPE (type
, idx
), gdb_stdout
);
4423 printf_filtered (" name '%s' (",
4424 TYPE_FIELD_NAME (type
, idx
) != NULL
4425 ? TYPE_FIELD_NAME (type
, idx
)
4427 gdb_print_host_address (TYPE_FIELD_NAME (type
, idx
), gdb_stdout
);
4428 printf_filtered (")\n");
4429 if (TYPE_FIELD_TYPE (type
, idx
) != NULL
)
4431 recursive_dump_type (TYPE_FIELD_TYPE (type
, idx
), spaces
+ 4);
4434 if (TYPE_CODE (type
) == TYPE_CODE_RANGE
)
4436 printfi_filtered (spaces
, "low %s%s high %s%s\n",
4437 plongest (TYPE_LOW_BOUND (type
)),
4438 TYPE_LOW_BOUND_UNDEFINED (type
) ? " (undefined)" : "",
4439 plongest (TYPE_HIGH_BOUND (type
)),
4440 TYPE_HIGH_BOUND_UNDEFINED (type
)
4441 ? " (undefined)" : "");
4444 switch (TYPE_SPECIFIC_FIELD (type
))
4446 case TYPE_SPECIFIC_CPLUS_STUFF
:
4447 printfi_filtered (spaces
, "cplus_stuff ");
4448 gdb_print_host_address (TYPE_CPLUS_SPECIFIC (type
),
4450 puts_filtered ("\n");
4451 print_cplus_stuff (type
, spaces
);
4454 case TYPE_SPECIFIC_GNAT_STUFF
:
4455 printfi_filtered (spaces
, "gnat_stuff ");
4456 gdb_print_host_address (TYPE_GNAT_SPECIFIC (type
), gdb_stdout
);
4457 puts_filtered ("\n");
4458 print_gnat_stuff (type
, spaces
);
4461 case TYPE_SPECIFIC_FLOATFORMAT
:
4462 printfi_filtered (spaces
, "floatformat ");
4463 if (TYPE_FLOATFORMAT (type
) == NULL
)
4464 puts_filtered ("(null)");
4467 puts_filtered ("{ ");
4468 if (TYPE_FLOATFORMAT (type
)[0] == NULL
4469 || TYPE_FLOATFORMAT (type
)[0]->name
== NULL
)
4470 puts_filtered ("(null)");
4472 puts_filtered (TYPE_FLOATFORMAT (type
)[0]->name
);
4474 puts_filtered (", ");
4475 if (TYPE_FLOATFORMAT (type
)[1] == NULL
4476 || TYPE_FLOATFORMAT (type
)[1]->name
== NULL
)
4477 puts_filtered ("(null)");
4479 puts_filtered (TYPE_FLOATFORMAT (type
)[1]->name
);
4481 puts_filtered (" }");
4483 puts_filtered ("\n");
4486 case TYPE_SPECIFIC_FUNC
:
4487 printfi_filtered (spaces
, "calling_convention %d\n",
4488 TYPE_CALLING_CONVENTION (type
));
4489 /* tail_call_list is not printed. */
4492 case TYPE_SPECIFIC_SELF_TYPE
:
4493 printfi_filtered (spaces
, "self_type ");
4494 gdb_print_host_address (TYPE_SELF_TYPE (type
), gdb_stdout
);
4495 puts_filtered ("\n");
4500 obstack_free (&dont_print_type_obstack
, NULL
);
4503 /* Trivial helpers for the libiberty hash table, for mapping one
4508 struct type
*old
, *newobj
;
4512 type_pair_hash (const void *item
)
4514 const struct type_pair
*pair
= (const struct type_pair
*) item
;
4516 return htab_hash_pointer (pair
->old
);
4520 type_pair_eq (const void *item_lhs
, const void *item_rhs
)
4522 const struct type_pair
*lhs
= (const struct type_pair
*) item_lhs
;
4523 const struct type_pair
*rhs
= (const struct type_pair
*) item_rhs
;
4525 return lhs
->old
== rhs
->old
;
4528 /* Allocate the hash table used by copy_type_recursive to walk
4529 types without duplicates. We use OBJFILE's obstack, because
4530 OBJFILE is about to be deleted. */
4533 create_copied_types_hash (struct objfile
*objfile
)
4535 return htab_create_alloc_ex (1, type_pair_hash
, type_pair_eq
,
4536 NULL
, &objfile
->objfile_obstack
,
4537 hashtab_obstack_allocate
,
4538 dummy_obstack_deallocate
);
4541 /* Recursively copy (deep copy) a dynamic attribute list of a type. */
4543 static struct dynamic_prop_list
*
4544 copy_dynamic_prop_list (struct obstack
*objfile_obstack
,
4545 struct dynamic_prop_list
*list
)
4547 struct dynamic_prop_list
*copy
= list
;
4548 struct dynamic_prop_list
**node_ptr
= ©
;
4550 while (*node_ptr
!= NULL
)
4552 struct dynamic_prop_list
*node_copy
;
4554 node_copy
= ((struct dynamic_prop_list
*)
4555 obstack_copy (objfile_obstack
, *node_ptr
,
4556 sizeof (struct dynamic_prop_list
)));
4557 node_copy
->prop
= (*node_ptr
)->prop
;
4558 *node_ptr
= node_copy
;
4560 node_ptr
= &node_copy
->next
;
4566 /* Recursively copy (deep copy) TYPE, if it is associated with
4567 OBJFILE. Return a new type owned by the gdbarch associated with the type, a
4568 saved type if we have already visited TYPE (using COPIED_TYPES), or TYPE if
4569 it is not associated with OBJFILE. */
4572 copy_type_recursive (struct objfile
*objfile
,
4574 htab_t copied_types
)
4576 struct type_pair
*stored
, pair
;
4578 struct type
*new_type
;
4580 if (! TYPE_OBJFILE_OWNED (type
))
4583 /* This type shouldn't be pointing to any types in other objfiles;
4584 if it did, the type might disappear unexpectedly. */
4585 gdb_assert (TYPE_OBJFILE (type
) == objfile
);
4588 slot
= htab_find_slot (copied_types
, &pair
, INSERT
);
4590 return ((struct type_pair
*) *slot
)->newobj
;
4592 new_type
= alloc_type_arch (get_type_arch (type
));
4594 /* We must add the new type to the hash table immediately, in case
4595 we encounter this type again during a recursive call below. */
4596 stored
= XOBNEW (&objfile
->objfile_obstack
, struct type_pair
);
4598 stored
->newobj
= new_type
;
4601 /* Copy the common fields of types. For the main type, we simply
4602 copy the entire thing and then update specific fields as needed. */
4603 *TYPE_MAIN_TYPE (new_type
) = *TYPE_MAIN_TYPE (type
);
4604 TYPE_OBJFILE_OWNED (new_type
) = 0;
4605 TYPE_OWNER (new_type
).gdbarch
= get_type_arch (type
);
4607 if (TYPE_NAME (type
))
4608 TYPE_NAME (new_type
) = xstrdup (TYPE_NAME (type
));
4609 if (TYPE_TAG_NAME (type
))
4610 TYPE_TAG_NAME (new_type
) = xstrdup (TYPE_TAG_NAME (type
));
4612 TYPE_INSTANCE_FLAGS (new_type
) = TYPE_INSTANCE_FLAGS (type
);
4613 TYPE_LENGTH (new_type
) = TYPE_LENGTH (type
);
4615 /* Copy the fields. */
4616 if (TYPE_NFIELDS (type
))
4620 nfields
= TYPE_NFIELDS (type
);
4621 TYPE_FIELDS (new_type
) = XCNEWVEC (struct field
, nfields
);
4622 for (i
= 0; i
< nfields
; i
++)
4624 TYPE_FIELD_ARTIFICIAL (new_type
, i
) =
4625 TYPE_FIELD_ARTIFICIAL (type
, i
);
4626 TYPE_FIELD_BITSIZE (new_type
, i
) = TYPE_FIELD_BITSIZE (type
, i
);
4627 if (TYPE_FIELD_TYPE (type
, i
))
4628 TYPE_FIELD_TYPE (new_type
, i
)
4629 = copy_type_recursive (objfile
, TYPE_FIELD_TYPE (type
, i
),
4631 if (TYPE_FIELD_NAME (type
, i
))
4632 TYPE_FIELD_NAME (new_type
, i
) =
4633 xstrdup (TYPE_FIELD_NAME (type
, i
));
4634 switch (TYPE_FIELD_LOC_KIND (type
, i
))
4636 case FIELD_LOC_KIND_BITPOS
:
4637 SET_FIELD_BITPOS (TYPE_FIELD (new_type
, i
),
4638 TYPE_FIELD_BITPOS (type
, i
));
4640 case FIELD_LOC_KIND_ENUMVAL
:
4641 SET_FIELD_ENUMVAL (TYPE_FIELD (new_type
, i
),
4642 TYPE_FIELD_ENUMVAL (type
, i
));
4644 case FIELD_LOC_KIND_PHYSADDR
:
4645 SET_FIELD_PHYSADDR (TYPE_FIELD (new_type
, i
),
4646 TYPE_FIELD_STATIC_PHYSADDR (type
, i
));
4648 case FIELD_LOC_KIND_PHYSNAME
:
4649 SET_FIELD_PHYSNAME (TYPE_FIELD (new_type
, i
),
4650 xstrdup (TYPE_FIELD_STATIC_PHYSNAME (type
,
4654 internal_error (__FILE__
, __LINE__
,
4655 _("Unexpected type field location kind: %d"),
4656 TYPE_FIELD_LOC_KIND (type
, i
));
4661 /* For range types, copy the bounds information. */
4662 if (TYPE_CODE (type
) == TYPE_CODE_RANGE
)
4664 TYPE_RANGE_DATA (new_type
) = XNEW (struct range_bounds
);
4665 *TYPE_RANGE_DATA (new_type
) = *TYPE_RANGE_DATA (type
);
4668 if (TYPE_DYN_PROP_LIST (type
) != NULL
)
4669 TYPE_DYN_PROP_LIST (new_type
)
4670 = copy_dynamic_prop_list (&objfile
->objfile_obstack
,
4671 TYPE_DYN_PROP_LIST (type
));
4674 /* Copy pointers to other types. */
4675 if (TYPE_TARGET_TYPE (type
))
4676 TYPE_TARGET_TYPE (new_type
) =
4677 copy_type_recursive (objfile
,
4678 TYPE_TARGET_TYPE (type
),
4681 /* Maybe copy the type_specific bits.
4683 NOTE drow/2005-12-09: We do not copy the C++-specific bits like
4684 base classes and methods. There's no fundamental reason why we
4685 can't, but at the moment it is not needed. */
4687 switch (TYPE_SPECIFIC_FIELD (type
))
4689 case TYPE_SPECIFIC_NONE
:
4691 case TYPE_SPECIFIC_FUNC
:
4692 INIT_FUNC_SPECIFIC (new_type
);
4693 TYPE_CALLING_CONVENTION (new_type
) = TYPE_CALLING_CONVENTION (type
);
4694 TYPE_NO_RETURN (new_type
) = TYPE_NO_RETURN (type
);
4695 TYPE_TAIL_CALL_LIST (new_type
) = NULL
;
4697 case TYPE_SPECIFIC_FLOATFORMAT
:
4698 TYPE_FLOATFORMAT (new_type
) = TYPE_FLOATFORMAT (type
);
4700 case TYPE_SPECIFIC_CPLUS_STUFF
:
4701 INIT_CPLUS_SPECIFIC (new_type
);
4703 case TYPE_SPECIFIC_GNAT_STUFF
:
4704 INIT_GNAT_SPECIFIC (new_type
);
4706 case TYPE_SPECIFIC_SELF_TYPE
:
4707 set_type_self_type (new_type
,
4708 copy_type_recursive (objfile
, TYPE_SELF_TYPE (type
),
4712 gdb_assert_not_reached ("bad type_specific_kind");
4718 /* Make a copy of the given TYPE, except that the pointer & reference
4719 types are not preserved.
4721 This function assumes that the given type has an associated objfile.
4722 This objfile is used to allocate the new type. */
4725 copy_type (const struct type
*type
)
4727 struct type
*new_type
;
4729 gdb_assert (TYPE_OBJFILE_OWNED (type
));
4731 new_type
= alloc_type_copy (type
);
4732 TYPE_INSTANCE_FLAGS (new_type
) = TYPE_INSTANCE_FLAGS (type
);
4733 TYPE_LENGTH (new_type
) = TYPE_LENGTH (type
);
4734 memcpy (TYPE_MAIN_TYPE (new_type
), TYPE_MAIN_TYPE (type
),
4735 sizeof (struct main_type
));
4736 if (TYPE_DYN_PROP_LIST (type
) != NULL
)
4737 TYPE_DYN_PROP_LIST (new_type
)
4738 = copy_dynamic_prop_list (&TYPE_OBJFILE (type
) -> objfile_obstack
,
4739 TYPE_DYN_PROP_LIST (type
));
4744 /* Helper functions to initialize architecture-specific types. */
4746 /* Allocate a type structure associated with GDBARCH and set its
4747 CODE, LENGTH, and NAME fields. */
4750 arch_type (struct gdbarch
*gdbarch
,
4751 enum type_code code
, int length
, const char *name
)
4755 type
= alloc_type_arch (gdbarch
);
4756 set_type_code (type
, code
);
4757 TYPE_LENGTH (type
) = length
;
4760 TYPE_NAME (type
) = gdbarch_obstack_strdup (gdbarch
, name
);
4765 /* Allocate a TYPE_CODE_INT type structure associated with GDBARCH.
4766 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
4767 the type's TYPE_UNSIGNED flag. NAME is the type name. */
4770 arch_integer_type (struct gdbarch
*gdbarch
,
4771 int bit
, int unsigned_p
, const char *name
)
4775 t
= arch_type (gdbarch
, TYPE_CODE_INT
, bit
/ TARGET_CHAR_BIT
, name
);
4777 TYPE_UNSIGNED (t
) = 1;
4782 /* Allocate a TYPE_CODE_CHAR type structure associated with GDBARCH.
4783 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
4784 the type's TYPE_UNSIGNED flag. NAME is the type name. */
4787 arch_character_type (struct gdbarch
*gdbarch
,
4788 int bit
, int unsigned_p
, const char *name
)
4792 t
= arch_type (gdbarch
, TYPE_CODE_CHAR
, bit
/ TARGET_CHAR_BIT
, name
);
4794 TYPE_UNSIGNED (t
) = 1;
4799 /* Allocate a TYPE_CODE_BOOL type structure associated with GDBARCH.
4800 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
4801 the type's TYPE_UNSIGNED flag. NAME is the type name. */
4804 arch_boolean_type (struct gdbarch
*gdbarch
,
4805 int bit
, int unsigned_p
, const char *name
)
4809 t
= arch_type (gdbarch
, TYPE_CODE_BOOL
, bit
/ TARGET_CHAR_BIT
, name
);
4811 TYPE_UNSIGNED (t
) = 1;
4816 /* Allocate a TYPE_CODE_FLT type structure associated with GDBARCH.
4817 BIT is the type size in bits; if BIT equals -1, the size is
4818 determined by the floatformat. NAME is the type name. Set the
4819 TYPE_FLOATFORMAT from FLOATFORMATS. */
4822 arch_float_type (struct gdbarch
*gdbarch
,
4823 int bit
, const char *name
,
4824 const struct floatformat
**floatformats
)
4828 bit
= verify_floatformat (bit
, floatformats
);
4829 t
= arch_type (gdbarch
, TYPE_CODE_FLT
, bit
/ TARGET_CHAR_BIT
, name
);
4830 TYPE_FLOATFORMAT (t
) = floatformats
;
4835 /* Allocate a TYPE_CODE_DECFLOAT type structure associated with GDBARCH.
4836 BIT is the type size in bits. NAME is the type name. */
4839 arch_decfloat_type (struct gdbarch
*gdbarch
, int bit
, const char *name
)
4843 t
= arch_type (gdbarch
, TYPE_CODE_DECFLOAT
, bit
/ TARGET_CHAR_BIT
, name
);
4847 /* Allocate a TYPE_CODE_COMPLEX type structure associated with GDBARCH.
4848 NAME is the type name. TARGET_TYPE is the component float type. */
4851 arch_complex_type (struct gdbarch
*gdbarch
,
4852 const char *name
, struct type
*target_type
)
4856 t
= arch_type (gdbarch
, TYPE_CODE_COMPLEX
,
4857 2 * TYPE_LENGTH (target_type
), name
);
4858 TYPE_TARGET_TYPE (t
) = target_type
;
4862 /* Allocate a TYPE_CODE_PTR type structure associated with GDBARCH.
4863 BIT is the pointer type size in bits. NAME is the type name.
4864 TARGET_TYPE is the pointer target type. Always sets the pointer type's
4865 TYPE_UNSIGNED flag. */
4868 arch_pointer_type (struct gdbarch
*gdbarch
,
4869 int bit
, const char *name
, struct type
*target_type
)
4873 t
= arch_type (gdbarch
, TYPE_CODE_PTR
, bit
/ TARGET_CHAR_BIT
, name
);
4874 TYPE_TARGET_TYPE (t
) = target_type
;
4875 TYPE_UNSIGNED (t
) = 1;
4879 /* Allocate a TYPE_CODE_FLAGS type structure associated with GDBARCH.
4880 NAME is the type name. LENGTH is the size of the flag word in bytes. */
4883 arch_flags_type (struct gdbarch
*gdbarch
, const char *name
, int length
)
4885 int max_nfields
= length
* TARGET_CHAR_BIT
;
4888 type
= arch_type (gdbarch
, TYPE_CODE_FLAGS
, length
, name
);
4889 TYPE_UNSIGNED (type
) = 1;
4890 TYPE_NFIELDS (type
) = 0;
4891 /* Pre-allocate enough space assuming every field is one bit. */
4893 = (struct field
*) TYPE_ZALLOC (type
, max_nfields
* sizeof (struct field
));
4898 /* Add field to TYPE_CODE_FLAGS type TYPE to indicate the bit at
4899 position BITPOS is called NAME. Pass NAME as "" for fields that
4900 should not be printed. */
4903 append_flags_type_field (struct type
*type
, int start_bitpos
, int nr_bits
,
4904 struct type
*field_type
, const char *name
)
4906 int type_bitsize
= TYPE_LENGTH (type
) * TARGET_CHAR_BIT
;
4907 int field_nr
= TYPE_NFIELDS (type
);
4909 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_FLAGS
);
4910 gdb_assert (TYPE_NFIELDS (type
) + 1 <= type_bitsize
);
4911 gdb_assert (start_bitpos
>= 0 && start_bitpos
< type_bitsize
);
4912 gdb_assert (nr_bits
>= 1 && nr_bits
<= type_bitsize
);
4913 gdb_assert (name
!= NULL
);
4915 TYPE_FIELD_NAME (type
, field_nr
) = xstrdup (name
);
4916 TYPE_FIELD_TYPE (type
, field_nr
) = field_type
;
4917 SET_FIELD_BITPOS (TYPE_FIELD (type
, field_nr
), start_bitpos
);
4918 TYPE_FIELD_BITSIZE (type
, field_nr
) = nr_bits
;
4919 ++TYPE_NFIELDS (type
);
4922 /* Special version of append_flags_type_field to add a flag field.
4923 Add field to TYPE_CODE_FLAGS type TYPE to indicate the bit at
4924 position BITPOS is called NAME. */
4927 append_flags_type_flag (struct type
*type
, int bitpos
, const char *name
)
4929 struct gdbarch
*gdbarch
= get_type_arch (type
);
4931 append_flags_type_field (type
, bitpos
, 1,
4932 builtin_type (gdbarch
)->builtin_bool
,
4936 /* Allocate a TYPE_CODE_STRUCT or TYPE_CODE_UNION type structure (as
4937 specified by CODE) associated with GDBARCH. NAME is the type name. */
4940 arch_composite_type (struct gdbarch
*gdbarch
, const char *name
,
4941 enum type_code code
)
4945 gdb_assert (code
== TYPE_CODE_STRUCT
|| code
== TYPE_CODE_UNION
);
4946 t
= arch_type (gdbarch
, code
, 0, NULL
);
4947 TYPE_TAG_NAME (t
) = name
;
4948 INIT_CPLUS_SPECIFIC (t
);
4952 /* Add new field with name NAME and type FIELD to composite type T.
4953 Do not set the field's position or adjust the type's length;
4954 the caller should do so. Return the new field. */
4957 append_composite_type_field_raw (struct type
*t
, const char *name
,
4962 TYPE_NFIELDS (t
) = TYPE_NFIELDS (t
) + 1;
4963 TYPE_FIELDS (t
) = XRESIZEVEC (struct field
, TYPE_FIELDS (t
),
4965 f
= &(TYPE_FIELDS (t
)[TYPE_NFIELDS (t
) - 1]);
4966 memset (f
, 0, sizeof f
[0]);
4967 FIELD_TYPE (f
[0]) = field
;
4968 FIELD_NAME (f
[0]) = name
;
4972 /* Add new field with name NAME and type FIELD to composite type T.
4973 ALIGNMENT (if non-zero) specifies the minimum field alignment. */
4976 append_composite_type_field_aligned (struct type
*t
, const char *name
,
4977 struct type
*field
, int alignment
)
4979 struct field
*f
= append_composite_type_field_raw (t
, name
, field
);
4981 if (TYPE_CODE (t
) == TYPE_CODE_UNION
)
4983 if (TYPE_LENGTH (t
) < TYPE_LENGTH (field
))
4984 TYPE_LENGTH (t
) = TYPE_LENGTH (field
);
4986 else if (TYPE_CODE (t
) == TYPE_CODE_STRUCT
)
4988 TYPE_LENGTH (t
) = TYPE_LENGTH (t
) + TYPE_LENGTH (field
);
4989 if (TYPE_NFIELDS (t
) > 1)
4991 SET_FIELD_BITPOS (f
[0],
4992 (FIELD_BITPOS (f
[-1])
4993 + (TYPE_LENGTH (FIELD_TYPE (f
[-1]))
4994 * TARGET_CHAR_BIT
)));
5000 alignment
*= TARGET_CHAR_BIT
;
5001 left
= FIELD_BITPOS (f
[0]) % alignment
;
5005 SET_FIELD_BITPOS (f
[0], FIELD_BITPOS (f
[0]) + (alignment
- left
));
5006 TYPE_LENGTH (t
) += (alignment
- left
) / TARGET_CHAR_BIT
;
5013 /* Add new field with name NAME and type FIELD to composite type T. */
5016 append_composite_type_field (struct type
*t
, const char *name
,
5019 append_composite_type_field_aligned (t
, name
, field
, 0);
5022 static struct gdbarch_data
*gdbtypes_data
;
5024 const struct builtin_type
*
5025 builtin_type (struct gdbarch
*gdbarch
)
5027 return (const struct builtin_type
*) gdbarch_data (gdbarch
, gdbtypes_data
);
5031 gdbtypes_post_init (struct gdbarch
*gdbarch
)
5033 struct builtin_type
*builtin_type
5034 = GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct builtin_type
);
5037 builtin_type
->builtin_void
5038 = arch_type (gdbarch
, TYPE_CODE_VOID
, 1, "void");
5039 builtin_type
->builtin_char
5040 = arch_integer_type (gdbarch
, TARGET_CHAR_BIT
,
5041 !gdbarch_char_signed (gdbarch
), "char");
5042 TYPE_NOSIGN (builtin_type
->builtin_char
) = 1;
5043 builtin_type
->builtin_signed_char
5044 = arch_integer_type (gdbarch
, TARGET_CHAR_BIT
,
5046 builtin_type
->builtin_unsigned_char
5047 = arch_integer_type (gdbarch
, TARGET_CHAR_BIT
,
5048 1, "unsigned char");
5049 builtin_type
->builtin_short
5050 = arch_integer_type (gdbarch
, gdbarch_short_bit (gdbarch
),
5052 builtin_type
->builtin_unsigned_short
5053 = arch_integer_type (gdbarch
, gdbarch_short_bit (gdbarch
),
5054 1, "unsigned short");
5055 builtin_type
->builtin_int
5056 = arch_integer_type (gdbarch
, gdbarch_int_bit (gdbarch
),
5058 builtin_type
->builtin_unsigned_int
5059 = arch_integer_type (gdbarch
, gdbarch_int_bit (gdbarch
),
5061 builtin_type
->builtin_long
5062 = arch_integer_type (gdbarch
, gdbarch_long_bit (gdbarch
),
5064 builtin_type
->builtin_unsigned_long
5065 = arch_integer_type (gdbarch
, gdbarch_long_bit (gdbarch
),
5066 1, "unsigned long");
5067 builtin_type
->builtin_long_long
5068 = arch_integer_type (gdbarch
, gdbarch_long_long_bit (gdbarch
),
5070 builtin_type
->builtin_unsigned_long_long
5071 = arch_integer_type (gdbarch
, gdbarch_long_long_bit (gdbarch
),
5072 1, "unsigned long long");
5073 builtin_type
->builtin_float
5074 = arch_float_type (gdbarch
, gdbarch_float_bit (gdbarch
),
5075 "float", gdbarch_float_format (gdbarch
));
5076 builtin_type
->builtin_double
5077 = arch_float_type (gdbarch
, gdbarch_double_bit (gdbarch
),
5078 "double", gdbarch_double_format (gdbarch
));
5079 builtin_type
->builtin_long_double
5080 = arch_float_type (gdbarch
, gdbarch_long_double_bit (gdbarch
),
5081 "long double", gdbarch_long_double_format (gdbarch
));
5082 builtin_type
->builtin_complex
5083 = arch_complex_type (gdbarch
, "complex",
5084 builtin_type
->builtin_float
);
5085 builtin_type
->builtin_double_complex
5086 = arch_complex_type (gdbarch
, "double complex",
5087 builtin_type
->builtin_double
);
5088 builtin_type
->builtin_string
5089 = arch_type (gdbarch
, TYPE_CODE_STRING
, 1, "string");
5090 builtin_type
->builtin_bool
5091 = arch_type (gdbarch
, TYPE_CODE_BOOL
, 1, "bool");
5093 /* The following three are about decimal floating point types, which
5094 are 32-bits, 64-bits and 128-bits respectively. */
5095 builtin_type
->builtin_decfloat
5096 = arch_decfloat_type (gdbarch
, 32, "_Decimal32");
5097 builtin_type
->builtin_decdouble
5098 = arch_decfloat_type (gdbarch
, 64, "_Decimal64");
5099 builtin_type
->builtin_declong
5100 = arch_decfloat_type (gdbarch
, 128, "_Decimal128");
5102 /* "True" character types. */
5103 builtin_type
->builtin_true_char
5104 = arch_character_type (gdbarch
, TARGET_CHAR_BIT
, 0, "true character");
5105 builtin_type
->builtin_true_unsigned_char
5106 = arch_character_type (gdbarch
, TARGET_CHAR_BIT
, 1, "true character");
5108 /* Fixed-size integer types. */
5109 builtin_type
->builtin_int0
5110 = arch_integer_type (gdbarch
, 0, 0, "int0_t");
5111 builtin_type
->builtin_int8
5112 = arch_integer_type (gdbarch
, 8, 0, "int8_t");
5113 builtin_type
->builtin_uint8
5114 = arch_integer_type (gdbarch
, 8, 1, "uint8_t");
5115 builtin_type
->builtin_int16
5116 = arch_integer_type (gdbarch
, 16, 0, "int16_t");
5117 builtin_type
->builtin_uint16
5118 = arch_integer_type (gdbarch
, 16, 1, "uint16_t");
5119 builtin_type
->builtin_int32
5120 = arch_integer_type (gdbarch
, 32, 0, "int32_t");
5121 builtin_type
->builtin_uint32
5122 = arch_integer_type (gdbarch
, 32, 1, "uint32_t");
5123 builtin_type
->builtin_int64
5124 = arch_integer_type (gdbarch
, 64, 0, "int64_t");
5125 builtin_type
->builtin_uint64
5126 = arch_integer_type (gdbarch
, 64, 1, "uint64_t");
5127 builtin_type
->builtin_int128
5128 = arch_integer_type (gdbarch
, 128, 0, "int128_t");
5129 builtin_type
->builtin_uint128
5130 = arch_integer_type (gdbarch
, 128, 1, "uint128_t");
5131 TYPE_INSTANCE_FLAGS (builtin_type
->builtin_int8
) |=
5132 TYPE_INSTANCE_FLAG_NOTTEXT
;
5133 TYPE_INSTANCE_FLAGS (builtin_type
->builtin_uint8
) |=
5134 TYPE_INSTANCE_FLAG_NOTTEXT
;
5136 /* Wide character types. */
5137 builtin_type
->builtin_char16
5138 = arch_integer_type (gdbarch
, 16, 0, "char16_t");
5139 builtin_type
->builtin_char32
5140 = arch_integer_type (gdbarch
, 32, 0, "char32_t");
5143 /* Default data/code pointer types. */
5144 builtin_type
->builtin_data_ptr
5145 = lookup_pointer_type (builtin_type
->builtin_void
);
5146 builtin_type
->builtin_func_ptr
5147 = lookup_pointer_type (lookup_function_type (builtin_type
->builtin_void
));
5148 builtin_type
->builtin_func_func
5149 = lookup_function_type (builtin_type
->builtin_func_ptr
);
5151 /* This type represents a GDB internal function. */
5152 builtin_type
->internal_fn
5153 = arch_type (gdbarch
, TYPE_CODE_INTERNAL_FUNCTION
, 0,
5154 "<internal function>");
5156 /* This type represents an xmethod. */
5157 builtin_type
->xmethod
5158 = arch_type (gdbarch
, TYPE_CODE_XMETHOD
, 0, "<xmethod>");
5160 return builtin_type
;
5163 /* This set of objfile-based types is intended to be used by symbol
5164 readers as basic types. */
5166 static const struct objfile_data
*objfile_type_data
;
5168 const struct objfile_type
*
5169 objfile_type (struct objfile
*objfile
)
5171 struct gdbarch
*gdbarch
;
5172 struct objfile_type
*objfile_type
5173 = (struct objfile_type
*) objfile_data (objfile
, objfile_type_data
);
5176 return objfile_type
;
5178 objfile_type
= OBSTACK_CALLOC (&objfile
->objfile_obstack
,
5179 1, struct objfile_type
);
5181 /* Use the objfile architecture to determine basic type properties. */
5182 gdbarch
= get_objfile_arch (objfile
);
5185 objfile_type
->builtin_void
5186 = init_type (objfile
, TYPE_CODE_VOID
, 1, "void");
5187 objfile_type
->builtin_char
5188 = init_integer_type (objfile
, TARGET_CHAR_BIT
,
5189 !gdbarch_char_signed (gdbarch
), "char");
5190 TYPE_NOSIGN (objfile_type
->builtin_char
) = 1;
5191 objfile_type
->builtin_signed_char
5192 = init_integer_type (objfile
, TARGET_CHAR_BIT
,
5194 objfile_type
->builtin_unsigned_char
5195 = init_integer_type (objfile
, TARGET_CHAR_BIT
,
5196 1, "unsigned char");
5197 objfile_type
->builtin_short
5198 = init_integer_type (objfile
, gdbarch_short_bit (gdbarch
),
5200 objfile_type
->builtin_unsigned_short
5201 = init_integer_type (objfile
, gdbarch_short_bit (gdbarch
),
5202 1, "unsigned short");
5203 objfile_type
->builtin_int
5204 = init_integer_type (objfile
, gdbarch_int_bit (gdbarch
),
5206 objfile_type
->builtin_unsigned_int
5207 = init_integer_type (objfile
, gdbarch_int_bit (gdbarch
),
5209 objfile_type
->builtin_long
5210 = init_integer_type (objfile
, gdbarch_long_bit (gdbarch
),
5212 objfile_type
->builtin_unsigned_long
5213 = init_integer_type (objfile
, gdbarch_long_bit (gdbarch
),
5214 1, "unsigned long");
5215 objfile_type
->builtin_long_long
5216 = init_integer_type (objfile
, gdbarch_long_long_bit (gdbarch
),
5218 objfile_type
->builtin_unsigned_long_long
5219 = init_integer_type (objfile
, gdbarch_long_long_bit (gdbarch
),
5220 1, "unsigned long long");
5221 objfile_type
->builtin_float
5222 = init_float_type (objfile
, gdbarch_float_bit (gdbarch
),
5223 "float", gdbarch_float_format (gdbarch
));
5224 objfile_type
->builtin_double
5225 = init_float_type (objfile
, gdbarch_double_bit (gdbarch
),
5226 "double", gdbarch_double_format (gdbarch
));
5227 objfile_type
->builtin_long_double
5228 = init_float_type (objfile
, gdbarch_long_double_bit (gdbarch
),
5229 "long double", gdbarch_long_double_format (gdbarch
));
5231 /* This type represents a type that was unrecognized in symbol read-in. */
5232 objfile_type
->builtin_error
5233 = init_type (objfile
, TYPE_CODE_ERROR
, 0, "<unknown type>");
5235 /* The following set of types is used for symbols with no
5236 debug information. */
5237 objfile_type
->nodebug_text_symbol
5238 = init_type (objfile
, TYPE_CODE_FUNC
, 1,
5239 "<text variable, no debug info>");
5240 TYPE_TARGET_TYPE (objfile_type
->nodebug_text_symbol
)
5241 = objfile_type
->builtin_int
;
5242 objfile_type
->nodebug_text_gnu_ifunc_symbol
5243 = init_type (objfile
, TYPE_CODE_FUNC
, 1,
5244 "<text gnu-indirect-function variable, no debug info>");
5245 TYPE_TARGET_TYPE (objfile_type
->nodebug_text_gnu_ifunc_symbol
)
5246 = objfile_type
->nodebug_text_symbol
;
5247 TYPE_GNU_IFUNC (objfile_type
->nodebug_text_gnu_ifunc_symbol
) = 1;
5248 objfile_type
->nodebug_got_plt_symbol
5249 = init_pointer_type (objfile
, gdbarch_addr_bit (gdbarch
),
5250 "<text from jump slot in .got.plt, no debug info>",
5251 objfile_type
->nodebug_text_symbol
);
5252 objfile_type
->nodebug_data_symbol
5253 = init_integer_type (objfile
, gdbarch_int_bit (gdbarch
), 0,
5254 "<data variable, no debug info>");
5255 objfile_type
->nodebug_unknown_symbol
5256 = init_integer_type (objfile
, TARGET_CHAR_BIT
, 0,
5257 "<variable (not text or data), no debug info>");
5258 objfile_type
->nodebug_tls_symbol
5259 = init_integer_type (objfile
, gdbarch_int_bit (gdbarch
), 0,
5260 "<thread local variable, no debug info>");
5262 /* NOTE: on some targets, addresses and pointers are not necessarily
5266 - gdb's `struct type' always describes the target's
5268 - gdb's `struct value' objects should always hold values in
5270 - gdb's CORE_ADDR values are addresses in the unified virtual
5271 address space that the assembler and linker work with. Thus,
5272 since target_read_memory takes a CORE_ADDR as an argument, it
5273 can access any memory on the target, even if the processor has
5274 separate code and data address spaces.
5276 In this context, objfile_type->builtin_core_addr is a bit odd:
5277 it's a target type for a value the target will never see. It's
5278 only used to hold the values of (typeless) linker symbols, which
5279 are indeed in the unified virtual address space. */
5281 objfile_type
->builtin_core_addr
5282 = init_integer_type (objfile
, gdbarch_addr_bit (gdbarch
), 1,
5285 set_objfile_data (objfile
, objfile_type_data
, objfile_type
);
5286 return objfile_type
;
5289 extern initialize_file_ftype _initialize_gdbtypes
;
5292 _initialize_gdbtypes (void)
5294 gdbtypes_data
= gdbarch_data_register_post_init (gdbtypes_post_init
);
5295 objfile_type_data
= register_objfile_data ();
5297 add_setshow_zuinteger_cmd ("overload", no_class
, &overload_debug
,
5298 _("Set debugging of C++ overloading."),
5299 _("Show debugging of C++ overloading."),
5300 _("When enabled, ranking of the "
5301 "functions is displayed."),
5303 show_overload_debug
,
5304 &setdebuglist
, &showdebuglist
);
5306 /* Add user knob for controlling resolution of opaque types. */
5307 add_setshow_boolean_cmd ("opaque-type-resolution", class_support
,
5308 &opaque_type_resolution
,
5309 _("Set resolution of opaque struct/class/union"
5310 " types (if set before loading symbols)."),
5311 _("Show resolution of opaque struct/class/union"
5312 " types (if set before loading symbols)."),
5314 show_opaque_type_resolution
,
5315 &setlist
, &showlist
);
5317 /* Add an option to permit non-strict type checking. */
5318 add_setshow_boolean_cmd ("type", class_support
,
5319 &strict_type_checking
,
5320 _("Set strict type checking."),
5321 _("Show strict type checking."),
5323 show_strict_type_checking
,
5324 &setchecklist
, &showchecklist
);