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
)
1578 type
= check_typedef (type
);
1579 if (TYPE_CODE (type
) != TYPE_CODE_PTR
1580 && TYPE_CODE (type
) != TYPE_CODE_REF
)
1582 type
= TYPE_TARGET_TYPE (type
);
1585 if (TYPE_CODE (type
) != TYPE_CODE_STRUCT
1586 && TYPE_CODE (type
) != TYPE_CODE_UNION
)
1588 std::string type_name
= type_to_string (type
);
1589 error (_("Type %s is not a structure or union type."),
1590 type_name
.c_str ());
1594 /* FIXME: This change put in by Michael seems incorrect for the case
1595 where the structure tag name is the same as the member name.
1596 I.e. when doing "ptype bell->bar" for "struct foo { int bar; int
1597 foo; } bell;" Disabled by fnf. */
1601 type_name
= type_name_no_tag (type
);
1602 if (type_name
!= NULL
&& strcmp (type_name
, name
) == 0)
1607 for (i
= TYPE_NFIELDS (type
) - 1; i
>= TYPE_N_BASECLASSES (type
); i
--)
1609 const char *t_field_name
= TYPE_FIELD_NAME (type
, i
);
1611 if (t_field_name
&& (strcmp_iw (t_field_name
, name
) == 0))
1613 return TYPE_FIELD_TYPE (type
, i
);
1615 else if (!t_field_name
|| *t_field_name
== '\0')
1617 struct type
*subtype
1618 = lookup_struct_elt_type (TYPE_FIELD_TYPE (type
, i
), name
, 1);
1620 if (subtype
!= NULL
)
1625 /* OK, it's not in this class. Recursively check the baseclasses. */
1626 for (i
= TYPE_N_BASECLASSES (type
) - 1; i
>= 0; i
--)
1630 t
= lookup_struct_elt_type (TYPE_BASECLASS (type
, i
), name
, 1);
1642 std::string type_name
= type_to_string (type
);
1643 error (_("Type %s has no component named %s."), type_name
.c_str (), name
);
1646 /* Store in *MAX the largest number representable by unsigned integer type
1650 get_unsigned_type_max (struct type
*type
, ULONGEST
*max
)
1654 type
= check_typedef (type
);
1655 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_INT
&& TYPE_UNSIGNED (type
));
1656 gdb_assert (TYPE_LENGTH (type
) <= sizeof (ULONGEST
));
1658 /* Written this way to avoid overflow. */
1659 n
= TYPE_LENGTH (type
) * TARGET_CHAR_BIT
;
1660 *max
= ((((ULONGEST
) 1 << (n
- 1)) - 1) << 1) | 1;
1663 /* Store in *MIN, *MAX the smallest and largest numbers representable by
1664 signed integer type TYPE. */
1667 get_signed_type_minmax (struct type
*type
, LONGEST
*min
, LONGEST
*max
)
1671 type
= check_typedef (type
);
1672 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_INT
&& !TYPE_UNSIGNED (type
));
1673 gdb_assert (TYPE_LENGTH (type
) <= sizeof (LONGEST
));
1675 n
= TYPE_LENGTH (type
) * TARGET_CHAR_BIT
;
1676 *min
= -((ULONGEST
) 1 << (n
- 1));
1677 *max
= ((ULONGEST
) 1 << (n
- 1)) - 1;
1680 /* Internal routine called by TYPE_VPTR_FIELDNO to return the value of
1681 cplus_stuff.vptr_fieldno.
1683 cplus_stuff is initialized to cplus_struct_default which does not
1684 set vptr_fieldno to -1 for portability reasons (IWBN to use C99
1685 designated initializers). We cope with that here. */
1688 internal_type_vptr_fieldno (struct type
*type
)
1690 type
= check_typedef (type
);
1691 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_STRUCT
1692 || TYPE_CODE (type
) == TYPE_CODE_UNION
);
1693 if (!HAVE_CPLUS_STRUCT (type
))
1695 return TYPE_RAW_CPLUS_SPECIFIC (type
)->vptr_fieldno
;
1698 /* Set the value of cplus_stuff.vptr_fieldno. */
1701 set_type_vptr_fieldno (struct type
*type
, int fieldno
)
1703 type
= check_typedef (type
);
1704 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_STRUCT
1705 || TYPE_CODE (type
) == TYPE_CODE_UNION
);
1706 if (!HAVE_CPLUS_STRUCT (type
))
1707 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
1708 TYPE_RAW_CPLUS_SPECIFIC (type
)->vptr_fieldno
= fieldno
;
1711 /* Internal routine called by TYPE_VPTR_BASETYPE to return the value of
1712 cplus_stuff.vptr_basetype. */
1715 internal_type_vptr_basetype (struct type
*type
)
1717 type
= check_typedef (type
);
1718 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_STRUCT
1719 || TYPE_CODE (type
) == TYPE_CODE_UNION
);
1720 gdb_assert (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_CPLUS_STUFF
);
1721 return TYPE_RAW_CPLUS_SPECIFIC (type
)->vptr_basetype
;
1724 /* Set the value of cplus_stuff.vptr_basetype. */
1727 set_type_vptr_basetype (struct type
*type
, struct type
*basetype
)
1729 type
= check_typedef (type
);
1730 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_STRUCT
1731 || TYPE_CODE (type
) == TYPE_CODE_UNION
);
1732 if (!HAVE_CPLUS_STRUCT (type
))
1733 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
1734 TYPE_RAW_CPLUS_SPECIFIC (type
)->vptr_basetype
= basetype
;
1737 /* Lookup the vptr basetype/fieldno values for TYPE.
1738 If found store vptr_basetype in *BASETYPEP if non-NULL, and return
1739 vptr_fieldno. Also, if found and basetype is from the same objfile,
1741 If not found, return -1 and ignore BASETYPEP.
1742 Callers should be aware that in some cases (for example,
1743 the type or one of its baseclasses is a stub type and we are
1744 debugging a .o file, or the compiler uses DWARF-2 and is not GCC),
1745 this function will not be able to find the
1746 virtual function table pointer, and vptr_fieldno will remain -1 and
1747 vptr_basetype will remain NULL or incomplete. */
1750 get_vptr_fieldno (struct type
*type
, struct type
**basetypep
)
1752 type
= check_typedef (type
);
1754 if (TYPE_VPTR_FIELDNO (type
) < 0)
1758 /* We must start at zero in case the first (and only) baseclass
1759 is virtual (and hence we cannot share the table pointer). */
1760 for (i
= 0; i
< TYPE_N_BASECLASSES (type
); i
++)
1762 struct type
*baseclass
= check_typedef (TYPE_BASECLASS (type
, i
));
1764 struct type
*basetype
;
1766 fieldno
= get_vptr_fieldno (baseclass
, &basetype
);
1769 /* If the type comes from a different objfile we can't cache
1770 it, it may have a different lifetime. PR 2384 */
1771 if (TYPE_OBJFILE (type
) == TYPE_OBJFILE (basetype
))
1773 set_type_vptr_fieldno (type
, fieldno
);
1774 set_type_vptr_basetype (type
, basetype
);
1777 *basetypep
= basetype
;
1788 *basetypep
= TYPE_VPTR_BASETYPE (type
);
1789 return TYPE_VPTR_FIELDNO (type
);
1794 stub_noname_complaint (void)
1796 complaint (&symfile_complaints
, _("stub type has NULL name"));
1799 /* Worker for is_dynamic_type. */
1802 is_dynamic_type_internal (struct type
*type
, int top_level
)
1804 type
= check_typedef (type
);
1806 /* We only want to recognize references at the outermost level. */
1807 if (top_level
&& TYPE_CODE (type
) == TYPE_CODE_REF
)
1808 type
= check_typedef (TYPE_TARGET_TYPE (type
));
1810 /* Types that have a dynamic TYPE_DATA_LOCATION are considered
1811 dynamic, even if the type itself is statically defined.
1812 From a user's point of view, this may appear counter-intuitive;
1813 but it makes sense in this context, because the point is to determine
1814 whether any part of the type needs to be resolved before it can
1816 if (TYPE_DATA_LOCATION (type
) != NULL
1817 && (TYPE_DATA_LOCATION_KIND (type
) == PROP_LOCEXPR
1818 || TYPE_DATA_LOCATION_KIND (type
) == PROP_LOCLIST
))
1821 if (TYPE_ASSOCIATED_PROP (type
))
1824 if (TYPE_ALLOCATED_PROP (type
))
1827 switch (TYPE_CODE (type
))
1829 case TYPE_CODE_RANGE
:
1831 /* A range type is obviously dynamic if it has at least one
1832 dynamic bound. But also consider the range type to be
1833 dynamic when its subtype is dynamic, even if the bounds
1834 of the range type are static. It allows us to assume that
1835 the subtype of a static range type is also static. */
1836 return (!has_static_range (TYPE_RANGE_DATA (type
))
1837 || is_dynamic_type_internal (TYPE_TARGET_TYPE (type
), 0));
1840 case TYPE_CODE_ARRAY
:
1842 gdb_assert (TYPE_NFIELDS (type
) == 1);
1844 /* The array is dynamic if either the bounds are dynamic,
1845 or the elements it contains have a dynamic contents. */
1846 if (is_dynamic_type_internal (TYPE_INDEX_TYPE (type
), 0))
1848 return is_dynamic_type_internal (TYPE_TARGET_TYPE (type
), 0);
1851 case TYPE_CODE_STRUCT
:
1852 case TYPE_CODE_UNION
:
1856 for (i
= 0; i
< TYPE_NFIELDS (type
); ++i
)
1857 if (!field_is_static (&TYPE_FIELD (type
, i
))
1858 && is_dynamic_type_internal (TYPE_FIELD_TYPE (type
, i
), 0))
1867 /* See gdbtypes.h. */
1870 is_dynamic_type (struct type
*type
)
1872 return is_dynamic_type_internal (type
, 1);
1875 static struct type
*resolve_dynamic_type_internal
1876 (struct type
*type
, struct property_addr_info
*addr_stack
, int top_level
);
1878 /* Given a dynamic range type (dyn_range_type) and a stack of
1879 struct property_addr_info elements, return a static version
1882 static struct type
*
1883 resolve_dynamic_range (struct type
*dyn_range_type
,
1884 struct property_addr_info
*addr_stack
)
1887 struct type
*static_range_type
, *static_target_type
;
1888 const struct dynamic_prop
*prop
;
1889 struct dynamic_prop low_bound
, high_bound
;
1891 gdb_assert (TYPE_CODE (dyn_range_type
) == TYPE_CODE_RANGE
);
1893 prop
= &TYPE_RANGE_DATA (dyn_range_type
)->low
;
1894 if (dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
1896 low_bound
.kind
= PROP_CONST
;
1897 low_bound
.data
.const_val
= value
;
1901 low_bound
.kind
= PROP_UNDEFINED
;
1902 low_bound
.data
.const_val
= 0;
1905 prop
= &TYPE_RANGE_DATA (dyn_range_type
)->high
;
1906 if (dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
1908 high_bound
.kind
= PROP_CONST
;
1909 high_bound
.data
.const_val
= value
;
1911 if (TYPE_RANGE_DATA (dyn_range_type
)->flag_upper_bound_is_count
)
1912 high_bound
.data
.const_val
1913 = low_bound
.data
.const_val
+ high_bound
.data
.const_val
- 1;
1917 high_bound
.kind
= PROP_UNDEFINED
;
1918 high_bound
.data
.const_val
= 0;
1922 = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (dyn_range_type
),
1924 static_range_type
= create_range_type (copy_type (dyn_range_type
),
1926 &low_bound
, &high_bound
);
1927 TYPE_RANGE_DATA (static_range_type
)->flag_bound_evaluated
= 1;
1928 return static_range_type
;
1931 /* Resolves dynamic bound values of an array type TYPE to static ones.
1932 ADDR_STACK is a stack of struct property_addr_info to be used
1933 if needed during the dynamic resolution. */
1935 static struct type
*
1936 resolve_dynamic_array (struct type
*type
,
1937 struct property_addr_info
*addr_stack
)
1940 struct type
*elt_type
;
1941 struct type
*range_type
;
1942 struct type
*ary_dim
;
1943 struct dynamic_prop
*prop
;
1945 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_ARRAY
);
1947 type
= copy_type (type
);
1950 range_type
= check_typedef (TYPE_INDEX_TYPE (elt_type
));
1951 range_type
= resolve_dynamic_range (range_type
, addr_stack
);
1953 /* Resolve allocated/associated here before creating a new array type, which
1954 will update the length of the array accordingly. */
1955 prop
= TYPE_ALLOCATED_PROP (type
);
1956 if (prop
!= NULL
&& dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
1958 TYPE_DYN_PROP_ADDR (prop
) = value
;
1959 TYPE_DYN_PROP_KIND (prop
) = PROP_CONST
;
1961 prop
= TYPE_ASSOCIATED_PROP (type
);
1962 if (prop
!= NULL
&& dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
1964 TYPE_DYN_PROP_ADDR (prop
) = value
;
1965 TYPE_DYN_PROP_KIND (prop
) = PROP_CONST
;
1968 ary_dim
= check_typedef (TYPE_TARGET_TYPE (elt_type
));
1970 if (ary_dim
!= NULL
&& TYPE_CODE (ary_dim
) == TYPE_CODE_ARRAY
)
1971 elt_type
= resolve_dynamic_array (ary_dim
, addr_stack
);
1973 elt_type
= TYPE_TARGET_TYPE (type
);
1975 return create_array_type_with_stride (type
, elt_type
, range_type
,
1976 TYPE_FIELD_BITSIZE (type
, 0));
1979 /* Resolve dynamic bounds of members of the union TYPE to static
1980 bounds. ADDR_STACK is a stack of struct property_addr_info
1981 to be used if needed during the dynamic resolution. */
1983 static struct type
*
1984 resolve_dynamic_union (struct type
*type
,
1985 struct property_addr_info
*addr_stack
)
1987 struct type
*resolved_type
;
1989 unsigned int max_len
= 0;
1991 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_UNION
);
1993 resolved_type
= copy_type (type
);
1994 TYPE_FIELDS (resolved_type
)
1995 = (struct field
*) TYPE_ALLOC (resolved_type
,
1996 TYPE_NFIELDS (resolved_type
)
1997 * sizeof (struct field
));
1998 memcpy (TYPE_FIELDS (resolved_type
),
2000 TYPE_NFIELDS (resolved_type
) * sizeof (struct field
));
2001 for (i
= 0; i
< TYPE_NFIELDS (resolved_type
); ++i
)
2005 if (field_is_static (&TYPE_FIELD (type
, i
)))
2008 t
= resolve_dynamic_type_internal (TYPE_FIELD_TYPE (resolved_type
, i
),
2010 TYPE_FIELD_TYPE (resolved_type
, i
) = t
;
2011 if (TYPE_LENGTH (t
) > max_len
)
2012 max_len
= TYPE_LENGTH (t
);
2015 TYPE_LENGTH (resolved_type
) = max_len
;
2016 return resolved_type
;
2019 /* Resolve dynamic bounds of members of the struct TYPE to static
2020 bounds. ADDR_STACK is a stack of struct property_addr_info to
2021 be used if needed during the dynamic resolution. */
2023 static struct type
*
2024 resolve_dynamic_struct (struct type
*type
,
2025 struct property_addr_info
*addr_stack
)
2027 struct type
*resolved_type
;
2029 unsigned resolved_type_bit_length
= 0;
2031 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_STRUCT
);
2032 gdb_assert (TYPE_NFIELDS (type
) > 0);
2034 resolved_type
= copy_type (type
);
2035 TYPE_FIELDS (resolved_type
)
2036 = (struct field
*) TYPE_ALLOC (resolved_type
,
2037 TYPE_NFIELDS (resolved_type
)
2038 * sizeof (struct field
));
2039 memcpy (TYPE_FIELDS (resolved_type
),
2041 TYPE_NFIELDS (resolved_type
) * sizeof (struct field
));
2042 for (i
= 0; i
< TYPE_NFIELDS (resolved_type
); ++i
)
2044 unsigned new_bit_length
;
2045 struct property_addr_info pinfo
;
2047 if (field_is_static (&TYPE_FIELD (type
, i
)))
2050 /* As we know this field is not a static field, the field's
2051 field_loc_kind should be FIELD_LOC_KIND_BITPOS. Verify
2052 this is the case, but only trigger a simple error rather
2053 than an internal error if that fails. While failing
2054 that verification indicates a bug in our code, the error
2055 is not severe enough to suggest to the user he stops
2056 his debugging session because of it. */
2057 if (TYPE_FIELD_LOC_KIND (type
, i
) != FIELD_LOC_KIND_BITPOS
)
2058 error (_("Cannot determine struct field location"
2059 " (invalid location kind)"));
2061 pinfo
.type
= check_typedef (TYPE_FIELD_TYPE (type
, i
));
2062 pinfo
.valaddr
= addr_stack
->valaddr
;
2065 + (TYPE_FIELD_BITPOS (resolved_type
, i
) / TARGET_CHAR_BIT
));
2066 pinfo
.next
= addr_stack
;
2068 TYPE_FIELD_TYPE (resolved_type
, i
)
2069 = resolve_dynamic_type_internal (TYPE_FIELD_TYPE (resolved_type
, i
),
2071 gdb_assert (TYPE_FIELD_LOC_KIND (resolved_type
, i
)
2072 == FIELD_LOC_KIND_BITPOS
);
2074 new_bit_length
= TYPE_FIELD_BITPOS (resolved_type
, i
);
2075 if (TYPE_FIELD_BITSIZE (resolved_type
, i
) != 0)
2076 new_bit_length
+= TYPE_FIELD_BITSIZE (resolved_type
, i
);
2078 new_bit_length
+= (TYPE_LENGTH (TYPE_FIELD_TYPE (resolved_type
, i
))
2081 /* Normally, we would use the position and size of the last field
2082 to determine the size of the enclosing structure. But GCC seems
2083 to be encoding the position of some fields incorrectly when
2084 the struct contains a dynamic field that is not placed last.
2085 So we compute the struct size based on the field that has
2086 the highest position + size - probably the best we can do. */
2087 if (new_bit_length
> resolved_type_bit_length
)
2088 resolved_type_bit_length
= new_bit_length
;
2091 /* The length of a type won't change for fortran, but it does for C and Ada.
2092 For fortran the size of dynamic fields might change over time but not the
2093 type length of the structure. If we adapt it, we run into problems
2094 when calculating the element offset for arrays of structs. */
2095 if (current_language
->la_language
!= language_fortran
)
2096 TYPE_LENGTH (resolved_type
)
2097 = (resolved_type_bit_length
+ TARGET_CHAR_BIT
- 1) / TARGET_CHAR_BIT
;
2099 /* The Ada language uses this field as a cache for static fixed types: reset
2100 it as RESOLVED_TYPE must have its own static fixed type. */
2101 TYPE_TARGET_TYPE (resolved_type
) = NULL
;
2103 return resolved_type
;
2106 /* Worker for resolved_dynamic_type. */
2108 static struct type
*
2109 resolve_dynamic_type_internal (struct type
*type
,
2110 struct property_addr_info
*addr_stack
,
2113 struct type
*real_type
= check_typedef (type
);
2114 struct type
*resolved_type
= type
;
2115 struct dynamic_prop
*prop
;
2118 if (!is_dynamic_type_internal (real_type
, top_level
))
2121 if (TYPE_CODE (type
) == TYPE_CODE_TYPEDEF
)
2123 resolved_type
= copy_type (type
);
2124 TYPE_TARGET_TYPE (resolved_type
)
2125 = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (type
), addr_stack
,
2130 /* Before trying to resolve TYPE, make sure it is not a stub. */
2133 switch (TYPE_CODE (type
))
2137 struct property_addr_info pinfo
;
2139 pinfo
.type
= check_typedef (TYPE_TARGET_TYPE (type
));
2140 pinfo
.valaddr
= NULL
;
2141 if (addr_stack
->valaddr
!= NULL
)
2142 pinfo
.addr
= extract_typed_address (addr_stack
->valaddr
, type
);
2144 pinfo
.addr
= read_memory_typed_address (addr_stack
->addr
, type
);
2145 pinfo
.next
= addr_stack
;
2147 resolved_type
= copy_type (type
);
2148 TYPE_TARGET_TYPE (resolved_type
)
2149 = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (type
),
2154 case TYPE_CODE_ARRAY
:
2155 resolved_type
= resolve_dynamic_array (type
, addr_stack
);
2158 case TYPE_CODE_RANGE
:
2159 resolved_type
= resolve_dynamic_range (type
, addr_stack
);
2162 case TYPE_CODE_UNION
:
2163 resolved_type
= resolve_dynamic_union (type
, addr_stack
);
2166 case TYPE_CODE_STRUCT
:
2167 resolved_type
= resolve_dynamic_struct (type
, addr_stack
);
2172 /* Resolve data_location attribute. */
2173 prop
= TYPE_DATA_LOCATION (resolved_type
);
2175 && dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2177 TYPE_DYN_PROP_ADDR (prop
) = value
;
2178 TYPE_DYN_PROP_KIND (prop
) = PROP_CONST
;
2181 return resolved_type
;
2184 /* See gdbtypes.h */
2187 resolve_dynamic_type (struct type
*type
, const gdb_byte
*valaddr
,
2190 struct property_addr_info pinfo
2191 = {check_typedef (type
), valaddr
, addr
, NULL
};
2193 return resolve_dynamic_type_internal (type
, &pinfo
, 1);
2196 /* See gdbtypes.h */
2198 struct dynamic_prop
*
2199 get_dyn_prop (enum dynamic_prop_node_kind prop_kind
, const struct type
*type
)
2201 struct dynamic_prop_list
*node
= TYPE_DYN_PROP_LIST (type
);
2203 while (node
!= NULL
)
2205 if (node
->prop_kind
== prop_kind
)
2212 /* See gdbtypes.h */
2215 add_dyn_prop (enum dynamic_prop_node_kind prop_kind
, struct dynamic_prop prop
,
2216 struct type
*type
, struct objfile
*objfile
)
2218 struct dynamic_prop_list
*temp
;
2220 gdb_assert (TYPE_OBJFILE_OWNED (type
));
2222 temp
= XOBNEW (&objfile
->objfile_obstack
, struct dynamic_prop_list
);
2223 temp
->prop_kind
= prop_kind
;
2225 temp
->next
= TYPE_DYN_PROP_LIST (type
);
2227 TYPE_DYN_PROP_LIST (type
) = temp
;
2230 /* Remove dynamic property from TYPE in case it exists. */
2233 remove_dyn_prop (enum dynamic_prop_node_kind prop_kind
,
2236 struct dynamic_prop_list
*prev_node
, *curr_node
;
2238 curr_node
= TYPE_DYN_PROP_LIST (type
);
2241 while (NULL
!= curr_node
)
2243 if (curr_node
->prop_kind
== prop_kind
)
2245 /* Update the linked list but don't free anything.
2246 The property was allocated on objstack and it is not known
2247 if we are on top of it. Nevertheless, everything is released
2248 when the complete objstack is freed. */
2249 if (NULL
== prev_node
)
2250 TYPE_DYN_PROP_LIST (type
) = curr_node
->next
;
2252 prev_node
->next
= curr_node
->next
;
2257 prev_node
= curr_node
;
2258 curr_node
= curr_node
->next
;
2262 /* Find the real type of TYPE. This function returns the real type,
2263 after removing all layers of typedefs, and completing opaque or stub
2264 types. Completion changes the TYPE argument, but stripping of
2267 Instance flags (e.g. const/volatile) are preserved as typedefs are
2268 stripped. If necessary a new qualified form of the underlying type
2271 NOTE: This will return a typedef if TYPE_TARGET_TYPE for the typedef has
2272 not been computed and we're either in the middle of reading symbols, or
2273 there was no name for the typedef in the debug info.
2275 NOTE: Lookup of opaque types can throw errors for invalid symbol files.
2276 QUITs in the symbol reading code can also throw.
2277 Thus this function can throw an exception.
2279 If TYPE is a TYPE_CODE_TYPEDEF, its length is updated to the length of
2282 If this is a stubbed struct (i.e. declared as struct foo *), see if
2283 we can find a full definition in some other file. If so, copy this
2284 definition, so we can use it in future. There used to be a comment
2285 (but not any code) that if we don't find a full definition, we'd
2286 set a flag so we don't spend time in the future checking the same
2287 type. That would be a mistake, though--we might load in more
2288 symbols which contain a full definition for the type. */
2291 check_typedef (struct type
*type
)
2293 struct type
*orig_type
= type
;
2294 /* While we're removing typedefs, we don't want to lose qualifiers.
2295 E.g., const/volatile. */
2296 int instance_flags
= TYPE_INSTANCE_FLAGS (type
);
2300 while (TYPE_CODE (type
) == TYPE_CODE_TYPEDEF
)
2302 if (!TYPE_TARGET_TYPE (type
))
2307 /* It is dangerous to call lookup_symbol if we are currently
2308 reading a symtab. Infinite recursion is one danger. */
2309 if (currently_reading_symtab
)
2310 return make_qualified_type (type
, instance_flags
, NULL
);
2312 name
= type_name_no_tag (type
);
2313 /* FIXME: shouldn't we separately check the TYPE_NAME and
2314 the TYPE_TAG_NAME, and look in STRUCT_DOMAIN and/or
2315 VAR_DOMAIN as appropriate? (this code was written before
2316 TYPE_NAME and TYPE_TAG_NAME were separate). */
2319 stub_noname_complaint ();
2320 return make_qualified_type (type
, instance_flags
, NULL
);
2322 sym
= lookup_symbol (name
, 0, STRUCT_DOMAIN
, 0).symbol
;
2324 TYPE_TARGET_TYPE (type
) = SYMBOL_TYPE (sym
);
2325 else /* TYPE_CODE_UNDEF */
2326 TYPE_TARGET_TYPE (type
) = alloc_type_arch (get_type_arch (type
));
2328 type
= TYPE_TARGET_TYPE (type
);
2330 /* Preserve the instance flags as we traverse down the typedef chain.
2332 Handling address spaces/classes is nasty, what do we do if there's a
2334 E.g., what if an outer typedef marks the type as class_1 and an inner
2335 typedef marks the type as class_2?
2336 This is the wrong place to do such error checking. We leave it to
2337 the code that created the typedef in the first place to flag the
2338 error. We just pick the outer address space (akin to letting the
2339 outer cast in a chain of casting win), instead of assuming
2340 "it can't happen". */
2342 const int ALL_SPACES
= (TYPE_INSTANCE_FLAG_CODE_SPACE
2343 | TYPE_INSTANCE_FLAG_DATA_SPACE
);
2344 const int ALL_CLASSES
= TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL
;
2345 int new_instance_flags
= TYPE_INSTANCE_FLAGS (type
);
2347 /* Treat code vs data spaces and address classes separately. */
2348 if ((instance_flags
& ALL_SPACES
) != 0)
2349 new_instance_flags
&= ~ALL_SPACES
;
2350 if ((instance_flags
& ALL_CLASSES
) != 0)
2351 new_instance_flags
&= ~ALL_CLASSES
;
2353 instance_flags
|= new_instance_flags
;
2357 /* If this is a struct/class/union with no fields, then check
2358 whether a full definition exists somewhere else. This is for
2359 systems where a type definition with no fields is issued for such
2360 types, instead of identifying them as stub types in the first
2363 if (TYPE_IS_OPAQUE (type
)
2364 && opaque_type_resolution
2365 && !currently_reading_symtab
)
2367 const char *name
= type_name_no_tag (type
);
2368 struct type
*newtype
;
2372 stub_noname_complaint ();
2373 return make_qualified_type (type
, instance_flags
, NULL
);
2375 newtype
= lookup_transparent_type (name
);
2379 /* If the resolved type and the stub are in the same
2380 objfile, then replace the stub type with the real deal.
2381 But if they're in separate objfiles, leave the stub
2382 alone; we'll just look up the transparent type every time
2383 we call check_typedef. We can't create pointers between
2384 types allocated to different objfiles, since they may
2385 have different lifetimes. Trying to copy NEWTYPE over to
2386 TYPE's objfile is pointless, too, since you'll have to
2387 move over any other types NEWTYPE refers to, which could
2388 be an unbounded amount of stuff. */
2389 if (TYPE_OBJFILE (newtype
) == TYPE_OBJFILE (type
))
2390 type
= make_qualified_type (newtype
,
2391 TYPE_INSTANCE_FLAGS (type
),
2397 /* Otherwise, rely on the stub flag being set for opaque/stubbed
2399 else if (TYPE_STUB (type
) && !currently_reading_symtab
)
2401 const char *name
= type_name_no_tag (type
);
2402 /* FIXME: shouldn't we separately check the TYPE_NAME and the
2403 TYPE_TAG_NAME, and look in STRUCT_DOMAIN and/or VAR_DOMAIN
2404 as appropriate? (this code was written before TYPE_NAME and
2405 TYPE_TAG_NAME were separate). */
2410 stub_noname_complaint ();
2411 return make_qualified_type (type
, instance_flags
, NULL
);
2413 sym
= lookup_symbol (name
, 0, STRUCT_DOMAIN
, 0).symbol
;
2416 /* Same as above for opaque types, we can replace the stub
2417 with the complete type only if they are in the same
2419 if (TYPE_OBJFILE (SYMBOL_TYPE(sym
)) == TYPE_OBJFILE (type
))
2420 type
= make_qualified_type (SYMBOL_TYPE (sym
),
2421 TYPE_INSTANCE_FLAGS (type
),
2424 type
= SYMBOL_TYPE (sym
);
2428 if (TYPE_TARGET_STUB (type
))
2430 struct type
*target_type
= check_typedef (TYPE_TARGET_TYPE (type
));
2432 if (TYPE_STUB (target_type
) || TYPE_TARGET_STUB (target_type
))
2434 /* Nothing we can do. */
2436 else if (TYPE_CODE (type
) == TYPE_CODE_RANGE
)
2438 TYPE_LENGTH (type
) = TYPE_LENGTH (target_type
);
2439 TYPE_TARGET_STUB (type
) = 0;
2443 type
= make_qualified_type (type
, instance_flags
, NULL
);
2445 /* Cache TYPE_LENGTH for future use. */
2446 TYPE_LENGTH (orig_type
) = TYPE_LENGTH (type
);
2451 /* Parse a type expression in the string [P..P+LENGTH). If an error
2452 occurs, silently return a void type. */
2454 static struct type
*
2455 safe_parse_type (struct gdbarch
*gdbarch
, char *p
, int length
)
2457 struct ui_file
*saved_gdb_stderr
;
2458 struct type
*type
= NULL
; /* Initialize to keep gcc happy. */
2460 /* Suppress error messages. */
2461 saved_gdb_stderr
= gdb_stderr
;
2462 gdb_stderr
= ui_file_new ();
2464 /* Call parse_and_eval_type() without fear of longjmp()s. */
2467 type
= parse_and_eval_type (p
, length
);
2469 CATCH (except
, RETURN_MASK_ERROR
)
2471 type
= builtin_type (gdbarch
)->builtin_void
;
2475 /* Stop suppressing error messages. */
2476 ui_file_delete (gdb_stderr
);
2477 gdb_stderr
= saved_gdb_stderr
;
2482 /* Ugly hack to convert method stubs into method types.
2484 He ain't kiddin'. This demangles the name of the method into a
2485 string including argument types, parses out each argument type,
2486 generates a string casting a zero to that type, evaluates the
2487 string, and stuffs the resulting type into an argtype vector!!!
2488 Then it knows the type of the whole function (including argument
2489 types for overloading), which info used to be in the stab's but was
2490 removed to hack back the space required for them. */
2493 check_stub_method (struct type
*type
, int method_id
, int signature_id
)
2495 struct gdbarch
*gdbarch
= get_type_arch (type
);
2497 char *mangled_name
= gdb_mangle_name (type
, method_id
, signature_id
);
2498 char *demangled_name
= gdb_demangle (mangled_name
,
2499 DMGL_PARAMS
| DMGL_ANSI
);
2500 char *argtypetext
, *p
;
2501 int depth
= 0, argcount
= 1;
2502 struct field
*argtypes
;
2505 /* Make sure we got back a function string that we can use. */
2507 p
= strchr (demangled_name
, '(');
2511 if (demangled_name
== NULL
|| p
== NULL
)
2512 error (_("Internal: Cannot demangle mangled name `%s'."),
2515 /* Now, read in the parameters that define this type. */
2520 if (*p
== '(' || *p
== '<')
2524 else if (*p
== ')' || *p
== '>')
2528 else if (*p
== ',' && depth
== 0)
2536 /* If we read one argument and it was ``void'', don't count it. */
2537 if (startswith (argtypetext
, "(void)"))
2540 /* We need one extra slot, for the THIS pointer. */
2542 argtypes
= (struct field
*)
2543 TYPE_ALLOC (type
, (argcount
+ 1) * sizeof (struct field
));
2546 /* Add THIS pointer for non-static methods. */
2547 f
= TYPE_FN_FIELDLIST1 (type
, method_id
);
2548 if (TYPE_FN_FIELD_STATIC_P (f
, signature_id
))
2552 argtypes
[0].type
= lookup_pointer_type (type
);
2556 if (*p
!= ')') /* () means no args, skip while. */
2561 if (depth
<= 0 && (*p
== ',' || *p
== ')'))
2563 /* Avoid parsing of ellipsis, they will be handled below.
2564 Also avoid ``void'' as above. */
2565 if (strncmp (argtypetext
, "...", p
- argtypetext
) != 0
2566 && strncmp (argtypetext
, "void", p
- argtypetext
) != 0)
2568 argtypes
[argcount
].type
=
2569 safe_parse_type (gdbarch
, argtypetext
, p
- argtypetext
);
2572 argtypetext
= p
+ 1;
2575 if (*p
== '(' || *p
== '<')
2579 else if (*p
== ')' || *p
== '>')
2588 TYPE_FN_FIELD_PHYSNAME (f
, signature_id
) = mangled_name
;
2590 /* Now update the old "stub" type into a real type. */
2591 mtype
= TYPE_FN_FIELD_TYPE (f
, signature_id
);
2592 /* MTYPE may currently be a function (TYPE_CODE_FUNC).
2593 We want a method (TYPE_CODE_METHOD). */
2594 smash_to_method_type (mtype
, type
, TYPE_TARGET_TYPE (mtype
),
2595 argtypes
, argcount
, p
[-2] == '.');
2596 TYPE_STUB (mtype
) = 0;
2597 TYPE_FN_FIELD_STUB (f
, signature_id
) = 0;
2599 xfree (demangled_name
);
2602 /* This is the external interface to check_stub_method, above. This
2603 function unstubs all of the signatures for TYPE's METHOD_ID method
2604 name. After calling this function TYPE_FN_FIELD_STUB will be
2605 cleared for each signature and TYPE_FN_FIELDLIST_NAME will be
2608 This function unfortunately can not die until stabs do. */
2611 check_stub_method_group (struct type
*type
, int method_id
)
2613 int len
= TYPE_FN_FIELDLIST_LENGTH (type
, method_id
);
2614 struct fn_field
*f
= TYPE_FN_FIELDLIST1 (type
, method_id
);
2615 int j
, found_stub
= 0;
2617 for (j
= 0; j
< len
; j
++)
2618 if (TYPE_FN_FIELD_STUB (f
, j
))
2621 check_stub_method (type
, method_id
, j
);
2624 /* GNU v3 methods with incorrect names were corrected when we read
2625 in type information, because it was cheaper to do it then. The
2626 only GNU v2 methods with incorrect method names are operators and
2627 destructors; destructors were also corrected when we read in type
2630 Therefore the only thing we need to handle here are v2 operator
2632 if (found_stub
&& !startswith (TYPE_FN_FIELD_PHYSNAME (f
, 0), "_Z"))
2635 char dem_opname
[256];
2637 ret
= cplus_demangle_opname (TYPE_FN_FIELDLIST_NAME (type
,
2639 dem_opname
, DMGL_ANSI
);
2641 ret
= cplus_demangle_opname (TYPE_FN_FIELDLIST_NAME (type
,
2645 TYPE_FN_FIELDLIST_NAME (type
, method_id
) = xstrdup (dem_opname
);
2649 /* Ensure it is in .rodata (if available) by workarounding GCC PR 44690. */
2650 const struct cplus_struct_type cplus_struct_default
= { };
2653 allocate_cplus_struct_type (struct type
*type
)
2655 if (HAVE_CPLUS_STRUCT (type
))
2656 /* Structure was already allocated. Nothing more to do. */
2659 TYPE_SPECIFIC_FIELD (type
) = TYPE_SPECIFIC_CPLUS_STUFF
;
2660 TYPE_RAW_CPLUS_SPECIFIC (type
) = (struct cplus_struct_type
*)
2661 TYPE_ALLOC (type
, sizeof (struct cplus_struct_type
));
2662 *(TYPE_RAW_CPLUS_SPECIFIC (type
)) = cplus_struct_default
;
2663 set_type_vptr_fieldno (type
, -1);
2666 const struct gnat_aux_type gnat_aux_default
=
2669 /* Set the TYPE's type-specific kind to TYPE_SPECIFIC_GNAT_STUFF,
2670 and allocate the associated gnat-specific data. The gnat-specific
2671 data is also initialized to gnat_aux_default. */
2674 allocate_gnat_aux_type (struct type
*type
)
2676 TYPE_SPECIFIC_FIELD (type
) = TYPE_SPECIFIC_GNAT_STUFF
;
2677 TYPE_GNAT_SPECIFIC (type
) = (struct gnat_aux_type
*)
2678 TYPE_ALLOC (type
, sizeof (struct gnat_aux_type
));
2679 *(TYPE_GNAT_SPECIFIC (type
)) = gnat_aux_default
;
2682 /* Helper function to initialize a newly allocated type. Set type code
2683 to CODE and initialize the type-specific fields accordingly. */
2686 set_type_code (struct type
*type
, enum type_code code
)
2688 TYPE_CODE (type
) = code
;
2692 case TYPE_CODE_STRUCT
:
2693 case TYPE_CODE_UNION
:
2694 case TYPE_CODE_NAMESPACE
:
2695 INIT_CPLUS_SPECIFIC (type
);
2698 TYPE_SPECIFIC_FIELD (type
) = TYPE_SPECIFIC_FLOATFORMAT
;
2700 case TYPE_CODE_FUNC
:
2701 INIT_FUNC_SPECIFIC (type
);
2706 /* Helper function to verify floating-point format and size.
2707 BIT is the type size in bits; if BIT equals -1, the size is
2708 determined by the floatformat. Returns size to be used. */
2711 verify_floatformat (int bit
, const struct floatformat
**floatformats
)
2713 gdb_assert (floatformats
!= NULL
);
2714 gdb_assert (floatformats
[0] != NULL
&& floatformats
[1] != NULL
);
2717 bit
= floatformats
[0]->totalsize
;
2718 gdb_assert (bit
>= 0);
2720 size_t len
= bit
/ TARGET_CHAR_BIT
;
2721 gdb_assert (len
>= floatformat_totalsize_bytes (floatformats
[0]));
2722 gdb_assert (len
>= floatformat_totalsize_bytes (floatformats
[1]));
2727 /* Helper function to initialize the standard scalar types.
2729 If NAME is non-NULL, then it is used to initialize the type name.
2730 Note that NAME is not copied; it is required to have a lifetime at
2731 least as long as OBJFILE. */
2734 init_type (struct objfile
*objfile
, enum type_code code
, int length
,
2739 type
= alloc_type (objfile
);
2740 set_type_code (type
, code
);
2741 TYPE_LENGTH (type
) = length
;
2742 TYPE_NAME (type
) = name
;
2747 /* Allocate a TYPE_CODE_INT type structure associated with OBJFILE.
2748 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
2749 the type's TYPE_UNSIGNED flag. NAME is the type name. */
2752 init_integer_type (struct objfile
*objfile
,
2753 int bit
, int unsigned_p
, const char *name
)
2757 t
= init_type (objfile
, TYPE_CODE_INT
, bit
/ TARGET_CHAR_BIT
, name
);
2759 TYPE_UNSIGNED (t
) = 1;
2764 /* Allocate a TYPE_CODE_CHAR type structure associated with OBJFILE.
2765 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
2766 the type's TYPE_UNSIGNED flag. NAME is the type name. */
2769 init_character_type (struct objfile
*objfile
,
2770 int bit
, int unsigned_p
, const char *name
)
2774 t
= init_type (objfile
, TYPE_CODE_CHAR
, bit
/ TARGET_CHAR_BIT
, name
);
2776 TYPE_UNSIGNED (t
) = 1;
2781 /* Allocate a TYPE_CODE_BOOL type structure associated with OBJFILE.
2782 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
2783 the type's TYPE_UNSIGNED flag. NAME is the type name. */
2786 init_boolean_type (struct objfile
*objfile
,
2787 int bit
, int unsigned_p
, const char *name
)
2791 t
= init_type (objfile
, TYPE_CODE_BOOL
, bit
/ TARGET_CHAR_BIT
, name
);
2793 TYPE_UNSIGNED (t
) = 1;
2798 /* Allocate a TYPE_CODE_FLT type structure associated with OBJFILE.
2799 BIT is the type size in bits; if BIT equals -1, the size is
2800 determined by the floatformat. NAME is the type name. Set the
2801 TYPE_FLOATFORMAT from FLOATFORMATS. */
2804 init_float_type (struct objfile
*objfile
,
2805 int bit
, const char *name
,
2806 const struct floatformat
**floatformats
)
2810 bit
= verify_floatformat (bit
, floatformats
);
2811 t
= init_type (objfile
, TYPE_CODE_FLT
, bit
/ TARGET_CHAR_BIT
, name
);
2812 TYPE_FLOATFORMAT (t
) = floatformats
;
2817 /* Allocate a TYPE_CODE_DECFLOAT type structure associated with OBJFILE.
2818 BIT is the type size in bits. NAME is the type name. */
2821 init_decfloat_type (struct objfile
*objfile
, int bit
, const char *name
)
2825 t
= init_type (objfile
, TYPE_CODE_DECFLOAT
, bit
/ TARGET_CHAR_BIT
, name
);
2829 /* Allocate a TYPE_CODE_COMPLEX type structure associated with OBJFILE.
2830 NAME is the type name. TARGET_TYPE is the component float type. */
2833 init_complex_type (struct objfile
*objfile
,
2834 const char *name
, struct type
*target_type
)
2838 t
= init_type (objfile
, TYPE_CODE_COMPLEX
,
2839 2 * TYPE_LENGTH (target_type
), name
);
2840 TYPE_TARGET_TYPE (t
) = target_type
;
2844 /* Allocate a TYPE_CODE_PTR type structure associated with OBJFILE.
2845 BIT is the pointer type size in bits. NAME is the type name.
2846 TARGET_TYPE is the pointer target type. Always sets the pointer type's
2847 TYPE_UNSIGNED flag. */
2850 init_pointer_type (struct objfile
*objfile
,
2851 int bit
, const char *name
, struct type
*target_type
)
2855 t
= init_type (objfile
, TYPE_CODE_PTR
, bit
/ TARGET_CHAR_BIT
, name
);
2856 TYPE_TARGET_TYPE (t
) = target_type
;
2857 TYPE_UNSIGNED (t
) = 1;
2862 /* Queries on types. */
2865 can_dereference (struct type
*t
)
2867 /* FIXME: Should we return true for references as well as
2869 t
= check_typedef (t
);
2872 && TYPE_CODE (t
) == TYPE_CODE_PTR
2873 && TYPE_CODE (TYPE_TARGET_TYPE (t
)) != TYPE_CODE_VOID
);
2877 is_integral_type (struct type
*t
)
2879 t
= check_typedef (t
);
2882 && ((TYPE_CODE (t
) == TYPE_CODE_INT
)
2883 || (TYPE_CODE (t
) == TYPE_CODE_ENUM
)
2884 || (TYPE_CODE (t
) == TYPE_CODE_FLAGS
)
2885 || (TYPE_CODE (t
) == TYPE_CODE_CHAR
)
2886 || (TYPE_CODE (t
) == TYPE_CODE_RANGE
)
2887 || (TYPE_CODE (t
) == TYPE_CODE_BOOL
)));
2890 /* Return true if TYPE is scalar. */
2893 is_scalar_type (struct type
*type
)
2895 type
= check_typedef (type
);
2897 switch (TYPE_CODE (type
))
2899 case TYPE_CODE_ARRAY
:
2900 case TYPE_CODE_STRUCT
:
2901 case TYPE_CODE_UNION
:
2903 case TYPE_CODE_STRING
:
2910 /* Return true if T is scalar, or a composite type which in practice has
2911 the memory layout of a scalar type. E.g., an array or struct with only
2912 one scalar element inside it, or a union with only scalar elements. */
2915 is_scalar_type_recursive (struct type
*t
)
2917 t
= check_typedef (t
);
2919 if (is_scalar_type (t
))
2921 /* Are we dealing with an array or string of known dimensions? */
2922 else if ((TYPE_CODE (t
) == TYPE_CODE_ARRAY
2923 || TYPE_CODE (t
) == TYPE_CODE_STRING
) && TYPE_NFIELDS (t
) == 1
2924 && TYPE_CODE (TYPE_INDEX_TYPE (t
)) == TYPE_CODE_RANGE
)
2926 LONGEST low_bound
, high_bound
;
2927 struct type
*elt_type
= check_typedef (TYPE_TARGET_TYPE (t
));
2929 get_discrete_bounds (TYPE_INDEX_TYPE (t
), &low_bound
, &high_bound
);
2931 return high_bound
== low_bound
&& is_scalar_type_recursive (elt_type
);
2933 /* Are we dealing with a struct with one element? */
2934 else if (TYPE_CODE (t
) == TYPE_CODE_STRUCT
&& TYPE_NFIELDS (t
) == 1)
2935 return is_scalar_type_recursive (TYPE_FIELD_TYPE (t
, 0));
2936 else if (TYPE_CODE (t
) == TYPE_CODE_UNION
)
2938 int i
, n
= TYPE_NFIELDS (t
);
2940 /* If all elements of the union are scalar, then the union is scalar. */
2941 for (i
= 0; i
< n
; i
++)
2942 if (!is_scalar_type_recursive (TYPE_FIELD_TYPE (t
, i
)))
2951 /* Return true is T is a class or a union. False otherwise. */
2954 class_or_union_p (const struct type
*t
)
2956 return (TYPE_CODE (t
) == TYPE_CODE_STRUCT
2957 || TYPE_CODE (t
) == TYPE_CODE_UNION
);
2960 /* A helper function which returns true if types A and B represent the
2961 "same" class type. This is true if the types have the same main
2962 type, or the same name. */
2965 class_types_same_p (const struct type
*a
, const struct type
*b
)
2967 return (TYPE_MAIN_TYPE (a
) == TYPE_MAIN_TYPE (b
)
2968 || (TYPE_NAME (a
) && TYPE_NAME (b
)
2969 && !strcmp (TYPE_NAME (a
), TYPE_NAME (b
))));
2972 /* If BASE is an ancestor of DCLASS return the distance between them.
2973 otherwise return -1;
2977 class B: public A {};
2978 class C: public B {};
2981 distance_to_ancestor (A, A, 0) = 0
2982 distance_to_ancestor (A, B, 0) = 1
2983 distance_to_ancestor (A, C, 0) = 2
2984 distance_to_ancestor (A, D, 0) = 3
2986 If PUBLIC is 1 then only public ancestors are considered,
2987 and the function returns the distance only if BASE is a public ancestor
2991 distance_to_ancestor (A, D, 1) = -1. */
2994 distance_to_ancestor (struct type
*base
, struct type
*dclass
, int is_public
)
2999 base
= check_typedef (base
);
3000 dclass
= check_typedef (dclass
);
3002 if (class_types_same_p (base
, dclass
))
3005 for (i
= 0; i
< TYPE_N_BASECLASSES (dclass
); i
++)
3007 if (is_public
&& ! BASETYPE_VIA_PUBLIC (dclass
, i
))
3010 d
= distance_to_ancestor (base
, TYPE_BASECLASS (dclass
, i
), is_public
);
3018 /* Check whether BASE is an ancestor or base class or DCLASS
3019 Return 1 if so, and 0 if not.
3020 Note: If BASE and DCLASS are of the same type, this function
3021 will return 1. So for some class A, is_ancestor (A, A) will
3025 is_ancestor (struct type
*base
, struct type
*dclass
)
3027 return distance_to_ancestor (base
, dclass
, 0) >= 0;
3030 /* Like is_ancestor, but only returns true when BASE is a public
3031 ancestor of DCLASS. */
3034 is_public_ancestor (struct type
*base
, struct type
*dclass
)
3036 return distance_to_ancestor (base
, dclass
, 1) >= 0;
3039 /* A helper function for is_unique_ancestor. */
3042 is_unique_ancestor_worker (struct type
*base
, struct type
*dclass
,
3044 const gdb_byte
*valaddr
, int embedded_offset
,
3045 CORE_ADDR address
, struct value
*val
)
3049 base
= check_typedef (base
);
3050 dclass
= check_typedef (dclass
);
3052 for (i
= 0; i
< TYPE_N_BASECLASSES (dclass
) && count
< 2; ++i
)
3057 iter
= check_typedef (TYPE_BASECLASS (dclass
, i
));
3059 this_offset
= baseclass_offset (dclass
, i
, valaddr
, embedded_offset
,
3062 if (class_types_same_p (base
, iter
))
3064 /* If this is the first subclass, set *OFFSET and set count
3065 to 1. Otherwise, if this is at the same offset as
3066 previous instances, do nothing. Otherwise, increment
3070 *offset
= this_offset
;
3073 else if (this_offset
== *offset
)
3081 count
+= is_unique_ancestor_worker (base
, iter
, offset
,
3083 embedded_offset
+ this_offset
,
3090 /* Like is_ancestor, but only returns true if BASE is a unique base
3091 class of the type of VAL. */
3094 is_unique_ancestor (struct type
*base
, struct value
*val
)
3098 return is_unique_ancestor_worker (base
, value_type (val
), &offset
,
3099 value_contents_for_printing (val
),
3100 value_embedded_offset (val
),
3101 value_address (val
), val
) == 1;
3105 /* Overload resolution. */
3107 /* Return the sum of the rank of A with the rank of B. */
3110 sum_ranks (struct rank a
, struct rank b
)
3113 c
.rank
= a
.rank
+ b
.rank
;
3114 c
.subrank
= a
.subrank
+ b
.subrank
;
3118 /* Compare rank A and B and return:
3120 1 if a is better than b
3121 -1 if b is better than a. */
3124 compare_ranks (struct rank a
, struct rank b
)
3126 if (a
.rank
== b
.rank
)
3128 if (a
.subrank
== b
.subrank
)
3130 if (a
.subrank
< b
.subrank
)
3132 if (a
.subrank
> b
.subrank
)
3136 if (a
.rank
< b
.rank
)
3139 /* a.rank > b.rank */
3143 /* Functions for overload resolution begin here. */
3145 /* Compare two badness vectors A and B and return the result.
3146 0 => A and B are identical
3147 1 => A and B are incomparable
3148 2 => A is better than B
3149 3 => A is worse than B */
3152 compare_badness (struct badness_vector
*a
, struct badness_vector
*b
)
3156 short found_pos
= 0; /* any positives in c? */
3157 short found_neg
= 0; /* any negatives in c? */
3159 /* differing lengths => incomparable */
3160 if (a
->length
!= b
->length
)
3163 /* Subtract b from a */
3164 for (i
= 0; i
< a
->length
; i
++)
3166 tmp
= compare_ranks (b
->rank
[i
], a
->rank
[i
]);
3176 return 1; /* incomparable */
3178 return 3; /* A > B */
3184 return 2; /* A < B */
3186 return 0; /* A == B */
3190 /* Rank a function by comparing its parameter types (PARMS, length
3191 NPARMS), to the types of an argument list (ARGS, length NARGS).
3192 Return a pointer to a badness vector. This has NARGS + 1
3195 struct badness_vector
*
3196 rank_function (struct type
**parms
, int nparms
,
3197 struct value
**args
, int nargs
)
3200 struct badness_vector
*bv
= XNEW (struct badness_vector
);
3201 int min_len
= nparms
< nargs
? nparms
: nargs
;
3203 bv
->length
= nargs
+ 1; /* add 1 for the length-match rank. */
3204 bv
->rank
= XNEWVEC (struct rank
, nargs
+ 1);
3206 /* First compare the lengths of the supplied lists.
3207 If there is a mismatch, set it to a high value. */
3209 /* pai/1997-06-03 FIXME: when we have debug info about default
3210 arguments and ellipsis parameter lists, we should consider those
3211 and rank the length-match more finely. */
3213 LENGTH_MATCH (bv
) = (nargs
!= nparms
)
3214 ? LENGTH_MISMATCH_BADNESS
3215 : EXACT_MATCH_BADNESS
;
3217 /* Now rank all the parameters of the candidate function. */
3218 for (i
= 1; i
<= min_len
; i
++)
3219 bv
->rank
[i
] = rank_one_type (parms
[i
- 1], value_type (args
[i
- 1]),
3222 /* If more arguments than parameters, add dummy entries. */
3223 for (i
= min_len
+ 1; i
<= nargs
; i
++)
3224 bv
->rank
[i
] = TOO_FEW_PARAMS_BADNESS
;
3229 /* Compare the names of two integer types, assuming that any sign
3230 qualifiers have been checked already. We do it this way because
3231 there may be an "int" in the name of one of the types. */
3234 integer_types_same_name_p (const char *first
, const char *second
)
3236 int first_p
, second_p
;
3238 /* If both are shorts, return 1; if neither is a short, keep
3240 first_p
= (strstr (first
, "short") != NULL
);
3241 second_p
= (strstr (second
, "short") != NULL
);
3242 if (first_p
&& second_p
)
3244 if (first_p
|| second_p
)
3247 /* Likewise for long. */
3248 first_p
= (strstr (first
, "long") != NULL
);
3249 second_p
= (strstr (second
, "long") != NULL
);
3250 if (first_p
&& second_p
)
3252 if (first_p
|| second_p
)
3255 /* Likewise for char. */
3256 first_p
= (strstr (first
, "char") != NULL
);
3257 second_p
= (strstr (second
, "char") != NULL
);
3258 if (first_p
&& second_p
)
3260 if (first_p
|| second_p
)
3263 /* They must both be ints. */
3267 /* Compares type A to type B returns 1 if the represent the same type
3271 types_equal (struct type
*a
, struct type
*b
)
3273 /* Identical type pointers. */
3274 /* However, this still doesn't catch all cases of same type for b
3275 and a. The reason is that builtin types are different from
3276 the same ones constructed from the object. */
3280 /* Resolve typedefs */
3281 if (TYPE_CODE (a
) == TYPE_CODE_TYPEDEF
)
3282 a
= check_typedef (a
);
3283 if (TYPE_CODE (b
) == TYPE_CODE_TYPEDEF
)
3284 b
= check_typedef (b
);
3286 /* If after resolving typedefs a and b are not of the same type
3287 code then they are not equal. */
3288 if (TYPE_CODE (a
) != TYPE_CODE (b
))
3291 /* If a and b are both pointers types or both reference types then
3292 they are equal of the same type iff the objects they refer to are
3293 of the same type. */
3294 if (TYPE_CODE (a
) == TYPE_CODE_PTR
3295 || TYPE_CODE (a
) == TYPE_CODE_REF
)
3296 return types_equal (TYPE_TARGET_TYPE (a
),
3297 TYPE_TARGET_TYPE (b
));
3299 /* Well, damnit, if the names are exactly the same, I'll say they
3300 are exactly the same. This happens when we generate method
3301 stubs. The types won't point to the same address, but they
3302 really are the same. */
3304 if (TYPE_NAME (a
) && TYPE_NAME (b
)
3305 && strcmp (TYPE_NAME (a
), TYPE_NAME (b
)) == 0)
3308 /* Check if identical after resolving typedefs. */
3312 /* Two function types are equal if their argument and return types
3314 if (TYPE_CODE (a
) == TYPE_CODE_FUNC
)
3318 if (TYPE_NFIELDS (a
) != TYPE_NFIELDS (b
))
3321 if (!types_equal (TYPE_TARGET_TYPE (a
), TYPE_TARGET_TYPE (b
)))
3324 for (i
= 0; i
< TYPE_NFIELDS (a
); ++i
)
3325 if (!types_equal (TYPE_FIELD_TYPE (a
, i
), TYPE_FIELD_TYPE (b
, i
)))
3334 /* Deep comparison of types. */
3336 /* An entry in the type-equality bcache. */
3338 typedef struct type_equality_entry
3340 struct type
*type1
, *type2
;
3341 } type_equality_entry_d
;
3343 DEF_VEC_O (type_equality_entry_d
);
3345 /* A helper function to compare two strings. Returns 1 if they are
3346 the same, 0 otherwise. Handles NULLs properly. */
3349 compare_maybe_null_strings (const char *s
, const char *t
)
3351 if (s
== NULL
&& t
!= NULL
)
3353 else if (s
!= NULL
&& t
== NULL
)
3355 else if (s
== NULL
&& t
== NULL
)
3357 return strcmp (s
, t
) == 0;
3360 /* A helper function for check_types_worklist that checks two types for
3361 "deep" equality. Returns non-zero if the types are considered the
3362 same, zero otherwise. */
3365 check_types_equal (struct type
*type1
, struct type
*type2
,
3366 VEC (type_equality_entry_d
) **worklist
)
3368 type1
= check_typedef (type1
);
3369 type2
= check_typedef (type2
);
3374 if (TYPE_CODE (type1
) != TYPE_CODE (type2
)
3375 || TYPE_LENGTH (type1
) != TYPE_LENGTH (type2
)
3376 || TYPE_UNSIGNED (type1
) != TYPE_UNSIGNED (type2
)
3377 || TYPE_NOSIGN (type1
) != TYPE_NOSIGN (type2
)
3378 || TYPE_VARARGS (type1
) != TYPE_VARARGS (type2
)
3379 || TYPE_VECTOR (type1
) != TYPE_VECTOR (type2
)
3380 || TYPE_NOTTEXT (type1
) != TYPE_NOTTEXT (type2
)
3381 || TYPE_INSTANCE_FLAGS (type1
) != TYPE_INSTANCE_FLAGS (type2
)
3382 || TYPE_NFIELDS (type1
) != TYPE_NFIELDS (type2
))
3385 if (!compare_maybe_null_strings (TYPE_TAG_NAME (type1
),
3386 TYPE_TAG_NAME (type2
)))
3388 if (!compare_maybe_null_strings (TYPE_NAME (type1
), TYPE_NAME (type2
)))
3391 if (TYPE_CODE (type1
) == TYPE_CODE_RANGE
)
3393 if (memcmp (TYPE_RANGE_DATA (type1
), TYPE_RANGE_DATA (type2
),
3394 sizeof (*TYPE_RANGE_DATA (type1
))) != 0)
3401 for (i
= 0; i
< TYPE_NFIELDS (type1
); ++i
)
3403 const struct field
*field1
= &TYPE_FIELD (type1
, i
);
3404 const struct field
*field2
= &TYPE_FIELD (type2
, i
);
3405 struct type_equality_entry entry
;
3407 if (FIELD_ARTIFICIAL (*field1
) != FIELD_ARTIFICIAL (*field2
)
3408 || FIELD_BITSIZE (*field1
) != FIELD_BITSIZE (*field2
)
3409 || FIELD_LOC_KIND (*field1
) != FIELD_LOC_KIND (*field2
))
3411 if (!compare_maybe_null_strings (FIELD_NAME (*field1
),
3412 FIELD_NAME (*field2
)))
3414 switch (FIELD_LOC_KIND (*field1
))
3416 case FIELD_LOC_KIND_BITPOS
:
3417 if (FIELD_BITPOS (*field1
) != FIELD_BITPOS (*field2
))
3420 case FIELD_LOC_KIND_ENUMVAL
:
3421 if (FIELD_ENUMVAL (*field1
) != FIELD_ENUMVAL (*field2
))
3424 case FIELD_LOC_KIND_PHYSADDR
:
3425 if (FIELD_STATIC_PHYSADDR (*field1
)
3426 != FIELD_STATIC_PHYSADDR (*field2
))
3429 case FIELD_LOC_KIND_PHYSNAME
:
3430 if (!compare_maybe_null_strings (FIELD_STATIC_PHYSNAME (*field1
),
3431 FIELD_STATIC_PHYSNAME (*field2
)))
3434 case FIELD_LOC_KIND_DWARF_BLOCK
:
3436 struct dwarf2_locexpr_baton
*block1
, *block2
;
3438 block1
= FIELD_DWARF_BLOCK (*field1
);
3439 block2
= FIELD_DWARF_BLOCK (*field2
);
3440 if (block1
->per_cu
!= block2
->per_cu
3441 || block1
->size
!= block2
->size
3442 || memcmp (block1
->data
, block2
->data
, block1
->size
) != 0)
3447 internal_error (__FILE__
, __LINE__
, _("Unsupported field kind "
3448 "%d by check_types_equal"),
3449 FIELD_LOC_KIND (*field1
));
3452 entry
.type1
= FIELD_TYPE (*field1
);
3453 entry
.type2
= FIELD_TYPE (*field2
);
3454 VEC_safe_push (type_equality_entry_d
, *worklist
, &entry
);
3458 if (TYPE_TARGET_TYPE (type1
) != NULL
)
3460 struct type_equality_entry entry
;
3462 if (TYPE_TARGET_TYPE (type2
) == NULL
)
3465 entry
.type1
= TYPE_TARGET_TYPE (type1
);
3466 entry
.type2
= TYPE_TARGET_TYPE (type2
);
3467 VEC_safe_push (type_equality_entry_d
, *worklist
, &entry
);
3469 else if (TYPE_TARGET_TYPE (type2
) != NULL
)
3475 /* Check types on a worklist for equality. Returns zero if any pair
3476 is not equal, non-zero if they are all considered equal. */
3479 check_types_worklist (VEC (type_equality_entry_d
) **worklist
,
3480 struct bcache
*cache
)
3482 while (!VEC_empty (type_equality_entry_d
, *worklist
))
3484 struct type_equality_entry entry
;
3487 entry
= *VEC_last (type_equality_entry_d
, *worklist
);
3488 VEC_pop (type_equality_entry_d
, *worklist
);
3490 /* If the type pair has already been visited, we know it is
3492 bcache_full (&entry
, sizeof (entry
), cache
, &added
);
3496 if (check_types_equal (entry
.type1
, entry
.type2
, worklist
) == 0)
3503 /* Return non-zero if types TYPE1 and TYPE2 are equal, as determined by a
3504 "deep comparison". Otherwise return zero. */
3507 types_deeply_equal (struct type
*type1
, struct type
*type2
)
3509 struct gdb_exception except
= exception_none
;
3511 struct bcache
*cache
;
3512 VEC (type_equality_entry_d
) *worklist
= NULL
;
3513 struct type_equality_entry entry
;
3515 gdb_assert (type1
!= NULL
&& type2
!= NULL
);
3517 /* Early exit for the simple case. */
3521 cache
= bcache_xmalloc (NULL
, NULL
);
3523 entry
.type1
= type1
;
3524 entry
.type2
= type2
;
3525 VEC_safe_push (type_equality_entry_d
, worklist
, &entry
);
3527 /* check_types_worklist calls several nested helper functions, some
3528 of which can raise a GDB exception, so we just check and rethrow
3529 here. If there is a GDB exception, a comparison is not capable
3530 (or trusted), so exit. */
3533 result
= check_types_worklist (&worklist
, cache
);
3535 CATCH (ex
, RETURN_MASK_ALL
)
3541 bcache_xfree (cache
);
3542 VEC_free (type_equality_entry_d
, worklist
);
3544 /* Rethrow if there was a problem. */
3545 if (except
.reason
< 0)
3546 throw_exception (except
);
3551 /* Allocated status of type TYPE. Return zero if type TYPE is allocated.
3552 Otherwise return one. */
3555 type_not_allocated (const struct type
*type
)
3557 struct dynamic_prop
*prop
= TYPE_ALLOCATED_PROP (type
);
3559 return (prop
&& TYPE_DYN_PROP_KIND (prop
) == PROP_CONST
3560 && !TYPE_DYN_PROP_ADDR (prop
));
3563 /* Associated status of type TYPE. Return zero if type TYPE is associated.
3564 Otherwise return one. */
3567 type_not_associated (const struct type
*type
)
3569 struct dynamic_prop
*prop
= TYPE_ASSOCIATED_PROP (type
);
3571 return (prop
&& TYPE_DYN_PROP_KIND (prop
) == PROP_CONST
3572 && !TYPE_DYN_PROP_ADDR (prop
));
3575 /* Compare one type (PARM) for compatibility with another (ARG).
3576 * PARM is intended to be the parameter type of a function; and
3577 * ARG is the supplied argument's type. This function tests if
3578 * the latter can be converted to the former.
3579 * VALUE is the argument's value or NULL if none (or called recursively)
3581 * Return 0 if they are identical types;
3582 * Otherwise, return an integer which corresponds to how compatible
3583 * PARM is to ARG. The higher the return value, the worse the match.
3584 * Generally the "bad" conversions are all uniformly assigned a 100. */
3587 rank_one_type (struct type
*parm
, struct type
*arg
, struct value
*value
)
3589 struct rank rank
= {0,0};
3591 if (types_equal (parm
, arg
))
3592 return EXACT_MATCH_BADNESS
;
3594 /* Resolve typedefs */
3595 if (TYPE_CODE (parm
) == TYPE_CODE_TYPEDEF
)
3596 parm
= check_typedef (parm
);
3597 if (TYPE_CODE (arg
) == TYPE_CODE_TYPEDEF
)
3598 arg
= check_typedef (arg
);
3600 /* See through references, since we can almost make non-references
3602 if (TYPE_CODE (arg
) == TYPE_CODE_REF
)
3603 return (sum_ranks (rank_one_type (parm
, TYPE_TARGET_TYPE (arg
), NULL
),
3604 REFERENCE_CONVERSION_BADNESS
));
3605 if (TYPE_CODE (parm
) == TYPE_CODE_REF
)
3606 return (sum_ranks (rank_one_type (TYPE_TARGET_TYPE (parm
), arg
, NULL
),
3607 REFERENCE_CONVERSION_BADNESS
));
3609 /* Debugging only. */
3610 fprintf_filtered (gdb_stderr
,
3611 "------ Arg is %s [%d], parm is %s [%d]\n",
3612 TYPE_NAME (arg
), TYPE_CODE (arg
),
3613 TYPE_NAME (parm
), TYPE_CODE (parm
));
3615 /* x -> y means arg of type x being supplied for parameter of type y. */
3617 switch (TYPE_CODE (parm
))
3620 switch (TYPE_CODE (arg
))
3624 /* Allowed pointer conversions are:
3625 (a) pointer to void-pointer conversion. */
3626 if (TYPE_CODE (TYPE_TARGET_TYPE (parm
)) == TYPE_CODE_VOID
)
3627 return VOID_PTR_CONVERSION_BADNESS
;
3629 /* (b) pointer to ancestor-pointer conversion. */
3630 rank
.subrank
= distance_to_ancestor (TYPE_TARGET_TYPE (parm
),
3631 TYPE_TARGET_TYPE (arg
),
3633 if (rank
.subrank
>= 0)
3634 return sum_ranks (BASE_PTR_CONVERSION_BADNESS
, rank
);
3636 return INCOMPATIBLE_TYPE_BADNESS
;
3637 case TYPE_CODE_ARRAY
:
3638 if (types_equal (TYPE_TARGET_TYPE (parm
),
3639 TYPE_TARGET_TYPE (arg
)))
3640 return EXACT_MATCH_BADNESS
;
3641 return INCOMPATIBLE_TYPE_BADNESS
;
3642 case TYPE_CODE_FUNC
:
3643 return rank_one_type (TYPE_TARGET_TYPE (parm
), arg
, NULL
);
3645 if (value
!= NULL
&& TYPE_CODE (value_type (value
)) == TYPE_CODE_INT
)
3647 if (value_as_long (value
) == 0)
3649 /* Null pointer conversion: allow it to be cast to a pointer.
3650 [4.10.1 of C++ standard draft n3290] */
3651 return NULL_POINTER_CONVERSION_BADNESS
;
3655 /* If type checking is disabled, allow the conversion. */
3656 if (!strict_type_checking
)
3657 return NS_INTEGER_POINTER_CONVERSION_BADNESS
;
3661 case TYPE_CODE_ENUM
:
3662 case TYPE_CODE_FLAGS
:
3663 case TYPE_CODE_CHAR
:
3664 case TYPE_CODE_RANGE
:
3665 case TYPE_CODE_BOOL
:
3667 return INCOMPATIBLE_TYPE_BADNESS
;
3669 case TYPE_CODE_ARRAY
:
3670 switch (TYPE_CODE (arg
))
3673 case TYPE_CODE_ARRAY
:
3674 return rank_one_type (TYPE_TARGET_TYPE (parm
),
3675 TYPE_TARGET_TYPE (arg
), NULL
);
3677 return INCOMPATIBLE_TYPE_BADNESS
;
3679 case TYPE_CODE_FUNC
:
3680 switch (TYPE_CODE (arg
))
3682 case TYPE_CODE_PTR
: /* funcptr -> func */
3683 return rank_one_type (parm
, TYPE_TARGET_TYPE (arg
), NULL
);
3685 return INCOMPATIBLE_TYPE_BADNESS
;
3688 switch (TYPE_CODE (arg
))
3691 if (TYPE_LENGTH (arg
) == TYPE_LENGTH (parm
))
3693 /* Deal with signed, unsigned, and plain chars and
3694 signed and unsigned ints. */
3695 if (TYPE_NOSIGN (parm
))
3697 /* This case only for character types. */
3698 if (TYPE_NOSIGN (arg
))
3699 return EXACT_MATCH_BADNESS
; /* plain char -> plain char */
3700 else /* signed/unsigned char -> plain char */
3701 return INTEGER_CONVERSION_BADNESS
;
3703 else if (TYPE_UNSIGNED (parm
))
3705 if (TYPE_UNSIGNED (arg
))
3707 /* unsigned int -> unsigned int, or
3708 unsigned long -> unsigned long */
3709 if (integer_types_same_name_p (TYPE_NAME (parm
),
3711 return EXACT_MATCH_BADNESS
;
3712 else if (integer_types_same_name_p (TYPE_NAME (arg
),
3714 && integer_types_same_name_p (TYPE_NAME (parm
),
3716 /* unsigned int -> unsigned long */
3717 return INTEGER_PROMOTION_BADNESS
;
3719 /* unsigned long -> unsigned int */
3720 return INTEGER_CONVERSION_BADNESS
;
3724 if (integer_types_same_name_p (TYPE_NAME (arg
),
3726 && integer_types_same_name_p (TYPE_NAME (parm
),
3728 /* signed long -> unsigned int */
3729 return INTEGER_CONVERSION_BADNESS
;
3731 /* signed int/long -> unsigned int/long */
3732 return INTEGER_CONVERSION_BADNESS
;
3735 else if (!TYPE_NOSIGN (arg
) && !TYPE_UNSIGNED (arg
))
3737 if (integer_types_same_name_p (TYPE_NAME (parm
),
3739 return EXACT_MATCH_BADNESS
;
3740 else if (integer_types_same_name_p (TYPE_NAME (arg
),
3742 && integer_types_same_name_p (TYPE_NAME (parm
),
3744 return INTEGER_PROMOTION_BADNESS
;
3746 return INTEGER_CONVERSION_BADNESS
;
3749 return INTEGER_CONVERSION_BADNESS
;
3751 else if (TYPE_LENGTH (arg
) < TYPE_LENGTH (parm
))
3752 return INTEGER_PROMOTION_BADNESS
;
3754 return INTEGER_CONVERSION_BADNESS
;
3755 case TYPE_CODE_ENUM
:
3756 case TYPE_CODE_FLAGS
:
3757 case TYPE_CODE_CHAR
:
3758 case TYPE_CODE_RANGE
:
3759 case TYPE_CODE_BOOL
:
3760 if (TYPE_DECLARED_CLASS (arg
))
3761 return INCOMPATIBLE_TYPE_BADNESS
;
3762 return INTEGER_PROMOTION_BADNESS
;
3764 return INT_FLOAT_CONVERSION_BADNESS
;
3766 return NS_POINTER_CONVERSION_BADNESS
;
3768 return INCOMPATIBLE_TYPE_BADNESS
;
3771 case TYPE_CODE_ENUM
:
3772 switch (TYPE_CODE (arg
))
3775 case TYPE_CODE_CHAR
:
3776 case TYPE_CODE_RANGE
:
3777 case TYPE_CODE_BOOL
:
3778 case TYPE_CODE_ENUM
:
3779 if (TYPE_DECLARED_CLASS (parm
) || TYPE_DECLARED_CLASS (arg
))
3780 return INCOMPATIBLE_TYPE_BADNESS
;
3781 return INTEGER_CONVERSION_BADNESS
;
3783 return INT_FLOAT_CONVERSION_BADNESS
;
3785 return INCOMPATIBLE_TYPE_BADNESS
;
3788 case TYPE_CODE_CHAR
:
3789 switch (TYPE_CODE (arg
))
3791 case TYPE_CODE_RANGE
:
3792 case TYPE_CODE_BOOL
:
3793 case TYPE_CODE_ENUM
:
3794 if (TYPE_DECLARED_CLASS (arg
))
3795 return INCOMPATIBLE_TYPE_BADNESS
;
3796 return INTEGER_CONVERSION_BADNESS
;
3798 return INT_FLOAT_CONVERSION_BADNESS
;
3800 if (TYPE_LENGTH (arg
) > TYPE_LENGTH (parm
))
3801 return INTEGER_CONVERSION_BADNESS
;
3802 else if (TYPE_LENGTH (arg
) < TYPE_LENGTH (parm
))
3803 return INTEGER_PROMOTION_BADNESS
;
3804 /* >>> !! else fall through !! <<< */
3805 case TYPE_CODE_CHAR
:
3806 /* Deal with signed, unsigned, and plain chars for C++ and
3807 with int cases falling through from previous case. */
3808 if (TYPE_NOSIGN (parm
))
3810 if (TYPE_NOSIGN (arg
))
3811 return EXACT_MATCH_BADNESS
;
3813 return INTEGER_CONVERSION_BADNESS
;
3815 else if (TYPE_UNSIGNED (parm
))
3817 if (TYPE_UNSIGNED (arg
))
3818 return EXACT_MATCH_BADNESS
;
3820 return INTEGER_PROMOTION_BADNESS
;
3822 else if (!TYPE_NOSIGN (arg
) && !TYPE_UNSIGNED (arg
))
3823 return EXACT_MATCH_BADNESS
;
3825 return INTEGER_CONVERSION_BADNESS
;
3827 return INCOMPATIBLE_TYPE_BADNESS
;
3830 case TYPE_CODE_RANGE
:
3831 switch (TYPE_CODE (arg
))
3834 case TYPE_CODE_CHAR
:
3835 case TYPE_CODE_RANGE
:
3836 case TYPE_CODE_BOOL
:
3837 case TYPE_CODE_ENUM
:
3838 return INTEGER_CONVERSION_BADNESS
;
3840 return INT_FLOAT_CONVERSION_BADNESS
;
3842 return INCOMPATIBLE_TYPE_BADNESS
;
3845 case TYPE_CODE_BOOL
:
3846 switch (TYPE_CODE (arg
))
3848 /* n3290 draft, section 4.12.1 (conv.bool):
3850 "A prvalue of arithmetic, unscoped enumeration, pointer, or
3851 pointer to member type can be converted to a prvalue of type
3852 bool. A zero value, null pointer value, or null member pointer
3853 value is converted to false; any other value is converted to
3854 true. A prvalue of type std::nullptr_t can be converted to a
3855 prvalue of type bool; the resulting value is false." */
3857 case TYPE_CODE_CHAR
:
3858 case TYPE_CODE_ENUM
:
3860 case TYPE_CODE_MEMBERPTR
:
3862 return BOOL_CONVERSION_BADNESS
;
3863 case TYPE_CODE_RANGE
:
3864 return INCOMPATIBLE_TYPE_BADNESS
;
3865 case TYPE_CODE_BOOL
:
3866 return EXACT_MATCH_BADNESS
;
3868 return INCOMPATIBLE_TYPE_BADNESS
;
3872 switch (TYPE_CODE (arg
))
3875 if (TYPE_LENGTH (arg
) < TYPE_LENGTH (parm
))
3876 return FLOAT_PROMOTION_BADNESS
;
3877 else if (TYPE_LENGTH (arg
) == TYPE_LENGTH (parm
))
3878 return EXACT_MATCH_BADNESS
;
3880 return FLOAT_CONVERSION_BADNESS
;
3882 case TYPE_CODE_BOOL
:
3883 case TYPE_CODE_ENUM
:
3884 case TYPE_CODE_RANGE
:
3885 case TYPE_CODE_CHAR
:
3886 return INT_FLOAT_CONVERSION_BADNESS
;
3888 return INCOMPATIBLE_TYPE_BADNESS
;
3891 case TYPE_CODE_COMPLEX
:
3892 switch (TYPE_CODE (arg
))
3893 { /* Strictly not needed for C++, but... */
3895 return FLOAT_PROMOTION_BADNESS
;
3896 case TYPE_CODE_COMPLEX
:
3897 return EXACT_MATCH_BADNESS
;
3899 return INCOMPATIBLE_TYPE_BADNESS
;
3902 case TYPE_CODE_STRUCT
:
3903 switch (TYPE_CODE (arg
))
3905 case TYPE_CODE_STRUCT
:
3906 /* Check for derivation */
3907 rank
.subrank
= distance_to_ancestor (parm
, arg
, 0);
3908 if (rank
.subrank
>= 0)
3909 return sum_ranks (BASE_CONVERSION_BADNESS
, rank
);
3910 /* else fall through */
3912 return INCOMPATIBLE_TYPE_BADNESS
;
3915 case TYPE_CODE_UNION
:
3916 switch (TYPE_CODE (arg
))
3918 case TYPE_CODE_UNION
:
3920 return INCOMPATIBLE_TYPE_BADNESS
;
3923 case TYPE_CODE_MEMBERPTR
:
3924 switch (TYPE_CODE (arg
))
3927 return INCOMPATIBLE_TYPE_BADNESS
;
3930 case TYPE_CODE_METHOD
:
3931 switch (TYPE_CODE (arg
))
3935 return INCOMPATIBLE_TYPE_BADNESS
;
3939 switch (TYPE_CODE (arg
))
3943 return INCOMPATIBLE_TYPE_BADNESS
;
3948 switch (TYPE_CODE (arg
))
3952 return rank_one_type (TYPE_FIELD_TYPE (parm
, 0),
3953 TYPE_FIELD_TYPE (arg
, 0), NULL
);
3955 return INCOMPATIBLE_TYPE_BADNESS
;
3958 case TYPE_CODE_VOID
:
3960 return INCOMPATIBLE_TYPE_BADNESS
;
3961 } /* switch (TYPE_CODE (arg)) */
3964 /* End of functions for overload resolution. */
3966 /* Routines to pretty-print types. */
3969 print_bit_vector (B_TYPE
*bits
, int nbits
)
3973 for (bitno
= 0; bitno
< nbits
; bitno
++)
3975 if ((bitno
% 8) == 0)
3977 puts_filtered (" ");
3979 if (B_TST (bits
, bitno
))
3980 printf_filtered (("1"));
3982 printf_filtered (("0"));
3986 /* Note the first arg should be the "this" pointer, we may not want to
3987 include it since we may get into a infinitely recursive
3991 print_args (struct field
*args
, int nargs
, int spaces
)
3997 for (i
= 0; i
< nargs
; i
++)
3999 printfi_filtered (spaces
, "[%d] name '%s'\n", i
,
4000 args
[i
].name
!= NULL
? args
[i
].name
: "<NULL>");
4001 recursive_dump_type (args
[i
].type
, spaces
+ 2);
4007 field_is_static (struct field
*f
)
4009 /* "static" fields are the fields whose location is not relative
4010 to the address of the enclosing struct. It would be nice to
4011 have a dedicated flag that would be set for static fields when
4012 the type is being created. But in practice, checking the field
4013 loc_kind should give us an accurate answer. */
4014 return (FIELD_LOC_KIND (*f
) == FIELD_LOC_KIND_PHYSNAME
4015 || FIELD_LOC_KIND (*f
) == FIELD_LOC_KIND_PHYSADDR
);
4019 dump_fn_fieldlists (struct type
*type
, int spaces
)
4025 printfi_filtered (spaces
, "fn_fieldlists ");
4026 gdb_print_host_address (TYPE_FN_FIELDLISTS (type
), gdb_stdout
);
4027 printf_filtered ("\n");
4028 for (method_idx
= 0; method_idx
< TYPE_NFN_FIELDS (type
); method_idx
++)
4030 f
= TYPE_FN_FIELDLIST1 (type
, method_idx
);
4031 printfi_filtered (spaces
+ 2, "[%d] name '%s' (",
4033 TYPE_FN_FIELDLIST_NAME (type
, method_idx
));
4034 gdb_print_host_address (TYPE_FN_FIELDLIST_NAME (type
, method_idx
),
4036 printf_filtered (_(") length %d\n"),
4037 TYPE_FN_FIELDLIST_LENGTH (type
, method_idx
));
4038 for (overload_idx
= 0;
4039 overload_idx
< TYPE_FN_FIELDLIST_LENGTH (type
, method_idx
);
4042 printfi_filtered (spaces
+ 4, "[%d] physname '%s' (",
4044 TYPE_FN_FIELD_PHYSNAME (f
, overload_idx
));
4045 gdb_print_host_address (TYPE_FN_FIELD_PHYSNAME (f
, overload_idx
),
4047 printf_filtered (")\n");
4048 printfi_filtered (spaces
+ 8, "type ");
4049 gdb_print_host_address (TYPE_FN_FIELD_TYPE (f
, overload_idx
),
4051 printf_filtered ("\n");
4053 recursive_dump_type (TYPE_FN_FIELD_TYPE (f
, overload_idx
),
4056 printfi_filtered (spaces
+ 8, "args ");
4057 gdb_print_host_address (TYPE_FN_FIELD_ARGS (f
, overload_idx
),
4059 printf_filtered ("\n");
4060 print_args (TYPE_FN_FIELD_ARGS (f
, overload_idx
),
4061 TYPE_NFIELDS (TYPE_FN_FIELD_TYPE (f
, overload_idx
)),
4063 printfi_filtered (spaces
+ 8, "fcontext ");
4064 gdb_print_host_address (TYPE_FN_FIELD_FCONTEXT (f
, overload_idx
),
4066 printf_filtered ("\n");
4068 printfi_filtered (spaces
+ 8, "is_const %d\n",
4069 TYPE_FN_FIELD_CONST (f
, overload_idx
));
4070 printfi_filtered (spaces
+ 8, "is_volatile %d\n",
4071 TYPE_FN_FIELD_VOLATILE (f
, overload_idx
));
4072 printfi_filtered (spaces
+ 8, "is_private %d\n",
4073 TYPE_FN_FIELD_PRIVATE (f
, overload_idx
));
4074 printfi_filtered (spaces
+ 8, "is_protected %d\n",
4075 TYPE_FN_FIELD_PROTECTED (f
, overload_idx
));
4076 printfi_filtered (spaces
+ 8, "is_stub %d\n",
4077 TYPE_FN_FIELD_STUB (f
, overload_idx
));
4078 printfi_filtered (spaces
+ 8, "voffset %u\n",
4079 TYPE_FN_FIELD_VOFFSET (f
, overload_idx
));
4085 print_cplus_stuff (struct type
*type
, int spaces
)
4087 printfi_filtered (spaces
, "vptr_fieldno %d\n", TYPE_VPTR_FIELDNO (type
));
4088 printfi_filtered (spaces
, "vptr_basetype ");
4089 gdb_print_host_address (TYPE_VPTR_BASETYPE (type
), gdb_stdout
);
4090 puts_filtered ("\n");
4091 if (TYPE_VPTR_BASETYPE (type
) != NULL
)
4092 recursive_dump_type (TYPE_VPTR_BASETYPE (type
), spaces
+ 2);
4094 printfi_filtered (spaces
, "n_baseclasses %d\n",
4095 TYPE_N_BASECLASSES (type
));
4096 printfi_filtered (spaces
, "nfn_fields %d\n",
4097 TYPE_NFN_FIELDS (type
));
4098 if (TYPE_N_BASECLASSES (type
) > 0)
4100 printfi_filtered (spaces
, "virtual_field_bits (%d bits at *",
4101 TYPE_N_BASECLASSES (type
));
4102 gdb_print_host_address (TYPE_FIELD_VIRTUAL_BITS (type
),
4104 printf_filtered (")");
4106 print_bit_vector (TYPE_FIELD_VIRTUAL_BITS (type
),
4107 TYPE_N_BASECLASSES (type
));
4108 puts_filtered ("\n");
4110 if (TYPE_NFIELDS (type
) > 0)
4112 if (TYPE_FIELD_PRIVATE_BITS (type
) != NULL
)
4114 printfi_filtered (spaces
,
4115 "private_field_bits (%d bits at *",
4116 TYPE_NFIELDS (type
));
4117 gdb_print_host_address (TYPE_FIELD_PRIVATE_BITS (type
),
4119 printf_filtered (")");
4120 print_bit_vector (TYPE_FIELD_PRIVATE_BITS (type
),
4121 TYPE_NFIELDS (type
));
4122 puts_filtered ("\n");
4124 if (TYPE_FIELD_PROTECTED_BITS (type
) != NULL
)
4126 printfi_filtered (spaces
,
4127 "protected_field_bits (%d bits at *",
4128 TYPE_NFIELDS (type
));
4129 gdb_print_host_address (TYPE_FIELD_PROTECTED_BITS (type
),
4131 printf_filtered (")");
4132 print_bit_vector (TYPE_FIELD_PROTECTED_BITS (type
),
4133 TYPE_NFIELDS (type
));
4134 puts_filtered ("\n");
4137 if (TYPE_NFN_FIELDS (type
) > 0)
4139 dump_fn_fieldlists (type
, spaces
);
4143 /* Print the contents of the TYPE's type_specific union, assuming that
4144 its type-specific kind is TYPE_SPECIFIC_GNAT_STUFF. */
4147 print_gnat_stuff (struct type
*type
, int spaces
)
4149 struct type
*descriptive_type
= TYPE_DESCRIPTIVE_TYPE (type
);
4151 if (descriptive_type
== NULL
)
4152 printfi_filtered (spaces
+ 2, "no descriptive type\n");
4155 printfi_filtered (spaces
+ 2, "descriptive type\n");
4156 recursive_dump_type (descriptive_type
, spaces
+ 4);
4160 static struct obstack dont_print_type_obstack
;
4163 recursive_dump_type (struct type
*type
, int spaces
)
4168 obstack_begin (&dont_print_type_obstack
, 0);
4170 if (TYPE_NFIELDS (type
) > 0
4171 || (HAVE_CPLUS_STRUCT (type
) && TYPE_NFN_FIELDS (type
) > 0))
4173 struct type
**first_dont_print
4174 = (struct type
**) obstack_base (&dont_print_type_obstack
);
4176 int i
= (struct type
**)
4177 obstack_next_free (&dont_print_type_obstack
) - first_dont_print
;
4181 if (type
== first_dont_print
[i
])
4183 printfi_filtered (spaces
, "type node ");
4184 gdb_print_host_address (type
, gdb_stdout
);
4185 printf_filtered (_(" <same as already seen type>\n"));
4190 obstack_ptr_grow (&dont_print_type_obstack
, type
);
4193 printfi_filtered (spaces
, "type node ");
4194 gdb_print_host_address (type
, gdb_stdout
);
4195 printf_filtered ("\n");
4196 printfi_filtered (spaces
, "name '%s' (",
4197 TYPE_NAME (type
) ? TYPE_NAME (type
) : "<NULL>");
4198 gdb_print_host_address (TYPE_NAME (type
), gdb_stdout
);
4199 printf_filtered (")\n");
4200 printfi_filtered (spaces
, "tagname '%s' (",
4201 TYPE_TAG_NAME (type
) ? TYPE_TAG_NAME (type
) : "<NULL>");
4202 gdb_print_host_address (TYPE_TAG_NAME (type
), gdb_stdout
);
4203 printf_filtered (")\n");
4204 printfi_filtered (spaces
, "code 0x%x ", TYPE_CODE (type
));
4205 switch (TYPE_CODE (type
))
4207 case TYPE_CODE_UNDEF
:
4208 printf_filtered ("(TYPE_CODE_UNDEF)");
4211 printf_filtered ("(TYPE_CODE_PTR)");
4213 case TYPE_CODE_ARRAY
:
4214 printf_filtered ("(TYPE_CODE_ARRAY)");
4216 case TYPE_CODE_STRUCT
:
4217 printf_filtered ("(TYPE_CODE_STRUCT)");
4219 case TYPE_CODE_UNION
:
4220 printf_filtered ("(TYPE_CODE_UNION)");
4222 case TYPE_CODE_ENUM
:
4223 printf_filtered ("(TYPE_CODE_ENUM)");
4225 case TYPE_CODE_FLAGS
:
4226 printf_filtered ("(TYPE_CODE_FLAGS)");
4228 case TYPE_CODE_FUNC
:
4229 printf_filtered ("(TYPE_CODE_FUNC)");
4232 printf_filtered ("(TYPE_CODE_INT)");
4235 printf_filtered ("(TYPE_CODE_FLT)");
4237 case TYPE_CODE_VOID
:
4238 printf_filtered ("(TYPE_CODE_VOID)");
4241 printf_filtered ("(TYPE_CODE_SET)");
4243 case TYPE_CODE_RANGE
:
4244 printf_filtered ("(TYPE_CODE_RANGE)");
4246 case TYPE_CODE_STRING
:
4247 printf_filtered ("(TYPE_CODE_STRING)");
4249 case TYPE_CODE_ERROR
:
4250 printf_filtered ("(TYPE_CODE_ERROR)");
4252 case TYPE_CODE_MEMBERPTR
:
4253 printf_filtered ("(TYPE_CODE_MEMBERPTR)");
4255 case TYPE_CODE_METHODPTR
:
4256 printf_filtered ("(TYPE_CODE_METHODPTR)");
4258 case TYPE_CODE_METHOD
:
4259 printf_filtered ("(TYPE_CODE_METHOD)");
4262 printf_filtered ("(TYPE_CODE_REF)");
4264 case TYPE_CODE_CHAR
:
4265 printf_filtered ("(TYPE_CODE_CHAR)");
4267 case TYPE_CODE_BOOL
:
4268 printf_filtered ("(TYPE_CODE_BOOL)");
4270 case TYPE_CODE_COMPLEX
:
4271 printf_filtered ("(TYPE_CODE_COMPLEX)");
4273 case TYPE_CODE_TYPEDEF
:
4274 printf_filtered ("(TYPE_CODE_TYPEDEF)");
4276 case TYPE_CODE_NAMESPACE
:
4277 printf_filtered ("(TYPE_CODE_NAMESPACE)");
4280 printf_filtered ("(UNKNOWN TYPE CODE)");
4283 puts_filtered ("\n");
4284 printfi_filtered (spaces
, "length %d\n", TYPE_LENGTH (type
));
4285 if (TYPE_OBJFILE_OWNED (type
))
4287 printfi_filtered (spaces
, "objfile ");
4288 gdb_print_host_address (TYPE_OWNER (type
).objfile
, gdb_stdout
);
4292 printfi_filtered (spaces
, "gdbarch ");
4293 gdb_print_host_address (TYPE_OWNER (type
).gdbarch
, gdb_stdout
);
4295 printf_filtered ("\n");
4296 printfi_filtered (spaces
, "target_type ");
4297 gdb_print_host_address (TYPE_TARGET_TYPE (type
), gdb_stdout
);
4298 printf_filtered ("\n");
4299 if (TYPE_TARGET_TYPE (type
) != NULL
)
4301 recursive_dump_type (TYPE_TARGET_TYPE (type
), spaces
+ 2);
4303 printfi_filtered (spaces
, "pointer_type ");
4304 gdb_print_host_address (TYPE_POINTER_TYPE (type
), gdb_stdout
);
4305 printf_filtered ("\n");
4306 printfi_filtered (spaces
, "reference_type ");
4307 gdb_print_host_address (TYPE_REFERENCE_TYPE (type
), gdb_stdout
);
4308 printf_filtered ("\n");
4309 printfi_filtered (spaces
, "type_chain ");
4310 gdb_print_host_address (TYPE_CHAIN (type
), gdb_stdout
);
4311 printf_filtered ("\n");
4312 printfi_filtered (spaces
, "instance_flags 0x%x",
4313 TYPE_INSTANCE_FLAGS (type
));
4314 if (TYPE_CONST (type
))
4316 puts_filtered (" TYPE_CONST");
4318 if (TYPE_VOLATILE (type
))
4320 puts_filtered (" TYPE_VOLATILE");
4322 if (TYPE_CODE_SPACE (type
))
4324 puts_filtered (" TYPE_CODE_SPACE");
4326 if (TYPE_DATA_SPACE (type
))
4328 puts_filtered (" TYPE_DATA_SPACE");
4330 if (TYPE_ADDRESS_CLASS_1 (type
))
4332 puts_filtered (" TYPE_ADDRESS_CLASS_1");
4334 if (TYPE_ADDRESS_CLASS_2 (type
))
4336 puts_filtered (" TYPE_ADDRESS_CLASS_2");
4338 if (TYPE_RESTRICT (type
))
4340 puts_filtered (" TYPE_RESTRICT");
4342 if (TYPE_ATOMIC (type
))
4344 puts_filtered (" TYPE_ATOMIC");
4346 puts_filtered ("\n");
4348 printfi_filtered (spaces
, "flags");
4349 if (TYPE_UNSIGNED (type
))
4351 puts_filtered (" TYPE_UNSIGNED");
4353 if (TYPE_NOSIGN (type
))
4355 puts_filtered (" TYPE_NOSIGN");
4357 if (TYPE_STUB (type
))
4359 puts_filtered (" TYPE_STUB");
4361 if (TYPE_TARGET_STUB (type
))
4363 puts_filtered (" TYPE_TARGET_STUB");
4365 if (TYPE_STATIC (type
))
4367 puts_filtered (" TYPE_STATIC");
4369 if (TYPE_PROTOTYPED (type
))
4371 puts_filtered (" TYPE_PROTOTYPED");
4373 if (TYPE_INCOMPLETE (type
))
4375 puts_filtered (" TYPE_INCOMPLETE");
4377 if (TYPE_VARARGS (type
))
4379 puts_filtered (" TYPE_VARARGS");
4381 /* This is used for things like AltiVec registers on ppc. Gcc emits
4382 an attribute for the array type, which tells whether or not we
4383 have a vector, instead of a regular array. */
4384 if (TYPE_VECTOR (type
))
4386 puts_filtered (" TYPE_VECTOR");
4388 if (TYPE_FIXED_INSTANCE (type
))
4390 puts_filtered (" TYPE_FIXED_INSTANCE");
4392 if (TYPE_STUB_SUPPORTED (type
))
4394 puts_filtered (" TYPE_STUB_SUPPORTED");
4396 if (TYPE_NOTTEXT (type
))
4398 puts_filtered (" TYPE_NOTTEXT");
4400 puts_filtered ("\n");
4401 printfi_filtered (spaces
, "nfields %d ", TYPE_NFIELDS (type
));
4402 gdb_print_host_address (TYPE_FIELDS (type
), gdb_stdout
);
4403 puts_filtered ("\n");
4404 for (idx
= 0; idx
< TYPE_NFIELDS (type
); idx
++)
4406 if (TYPE_CODE (type
) == TYPE_CODE_ENUM
)
4407 printfi_filtered (spaces
+ 2,
4408 "[%d] enumval %s type ",
4409 idx
, plongest (TYPE_FIELD_ENUMVAL (type
, idx
)));
4411 printfi_filtered (spaces
+ 2,
4412 "[%d] bitpos %s bitsize %d type ",
4413 idx
, plongest (TYPE_FIELD_BITPOS (type
, idx
)),
4414 TYPE_FIELD_BITSIZE (type
, idx
));
4415 gdb_print_host_address (TYPE_FIELD_TYPE (type
, idx
), gdb_stdout
);
4416 printf_filtered (" name '%s' (",
4417 TYPE_FIELD_NAME (type
, idx
) != NULL
4418 ? TYPE_FIELD_NAME (type
, idx
)
4420 gdb_print_host_address (TYPE_FIELD_NAME (type
, idx
), gdb_stdout
);
4421 printf_filtered (")\n");
4422 if (TYPE_FIELD_TYPE (type
, idx
) != NULL
)
4424 recursive_dump_type (TYPE_FIELD_TYPE (type
, idx
), spaces
+ 4);
4427 if (TYPE_CODE (type
) == TYPE_CODE_RANGE
)
4429 printfi_filtered (spaces
, "low %s%s high %s%s\n",
4430 plongest (TYPE_LOW_BOUND (type
)),
4431 TYPE_LOW_BOUND_UNDEFINED (type
) ? " (undefined)" : "",
4432 plongest (TYPE_HIGH_BOUND (type
)),
4433 TYPE_HIGH_BOUND_UNDEFINED (type
)
4434 ? " (undefined)" : "");
4437 switch (TYPE_SPECIFIC_FIELD (type
))
4439 case TYPE_SPECIFIC_CPLUS_STUFF
:
4440 printfi_filtered (spaces
, "cplus_stuff ");
4441 gdb_print_host_address (TYPE_CPLUS_SPECIFIC (type
),
4443 puts_filtered ("\n");
4444 print_cplus_stuff (type
, spaces
);
4447 case TYPE_SPECIFIC_GNAT_STUFF
:
4448 printfi_filtered (spaces
, "gnat_stuff ");
4449 gdb_print_host_address (TYPE_GNAT_SPECIFIC (type
), gdb_stdout
);
4450 puts_filtered ("\n");
4451 print_gnat_stuff (type
, spaces
);
4454 case TYPE_SPECIFIC_FLOATFORMAT
:
4455 printfi_filtered (spaces
, "floatformat ");
4456 if (TYPE_FLOATFORMAT (type
) == NULL
)
4457 puts_filtered ("(null)");
4460 puts_filtered ("{ ");
4461 if (TYPE_FLOATFORMAT (type
)[0] == NULL
4462 || TYPE_FLOATFORMAT (type
)[0]->name
== NULL
)
4463 puts_filtered ("(null)");
4465 puts_filtered (TYPE_FLOATFORMAT (type
)[0]->name
);
4467 puts_filtered (", ");
4468 if (TYPE_FLOATFORMAT (type
)[1] == NULL
4469 || TYPE_FLOATFORMAT (type
)[1]->name
== NULL
)
4470 puts_filtered ("(null)");
4472 puts_filtered (TYPE_FLOATFORMAT (type
)[1]->name
);
4474 puts_filtered (" }");
4476 puts_filtered ("\n");
4479 case TYPE_SPECIFIC_FUNC
:
4480 printfi_filtered (spaces
, "calling_convention %d\n",
4481 TYPE_CALLING_CONVENTION (type
));
4482 /* tail_call_list is not printed. */
4485 case TYPE_SPECIFIC_SELF_TYPE
:
4486 printfi_filtered (spaces
, "self_type ");
4487 gdb_print_host_address (TYPE_SELF_TYPE (type
), gdb_stdout
);
4488 puts_filtered ("\n");
4493 obstack_free (&dont_print_type_obstack
, NULL
);
4496 /* Trivial helpers for the libiberty hash table, for mapping one
4501 struct type
*old
, *newobj
;
4505 type_pair_hash (const void *item
)
4507 const struct type_pair
*pair
= (const struct type_pair
*) item
;
4509 return htab_hash_pointer (pair
->old
);
4513 type_pair_eq (const void *item_lhs
, const void *item_rhs
)
4515 const struct type_pair
*lhs
= (const struct type_pair
*) item_lhs
;
4516 const struct type_pair
*rhs
= (const struct type_pair
*) item_rhs
;
4518 return lhs
->old
== rhs
->old
;
4521 /* Allocate the hash table used by copy_type_recursive to walk
4522 types without duplicates. We use OBJFILE's obstack, because
4523 OBJFILE is about to be deleted. */
4526 create_copied_types_hash (struct objfile
*objfile
)
4528 return htab_create_alloc_ex (1, type_pair_hash
, type_pair_eq
,
4529 NULL
, &objfile
->objfile_obstack
,
4530 hashtab_obstack_allocate
,
4531 dummy_obstack_deallocate
);
4534 /* Recursively copy (deep copy) a dynamic attribute list of a type. */
4536 static struct dynamic_prop_list
*
4537 copy_dynamic_prop_list (struct obstack
*objfile_obstack
,
4538 struct dynamic_prop_list
*list
)
4540 struct dynamic_prop_list
*copy
= list
;
4541 struct dynamic_prop_list
**node_ptr
= ©
;
4543 while (*node_ptr
!= NULL
)
4545 struct dynamic_prop_list
*node_copy
;
4547 node_copy
= ((struct dynamic_prop_list
*)
4548 obstack_copy (objfile_obstack
, *node_ptr
,
4549 sizeof (struct dynamic_prop_list
)));
4550 node_copy
->prop
= (*node_ptr
)->prop
;
4551 *node_ptr
= node_copy
;
4553 node_ptr
= &node_copy
->next
;
4559 /* Recursively copy (deep copy) TYPE, if it is associated with
4560 OBJFILE. Return a new type owned by the gdbarch associated with the type, a
4561 saved type if we have already visited TYPE (using COPIED_TYPES), or TYPE if
4562 it is not associated with OBJFILE. */
4565 copy_type_recursive (struct objfile
*objfile
,
4567 htab_t copied_types
)
4569 struct type_pair
*stored
, pair
;
4571 struct type
*new_type
;
4573 if (! TYPE_OBJFILE_OWNED (type
))
4576 /* This type shouldn't be pointing to any types in other objfiles;
4577 if it did, the type might disappear unexpectedly. */
4578 gdb_assert (TYPE_OBJFILE (type
) == objfile
);
4581 slot
= htab_find_slot (copied_types
, &pair
, INSERT
);
4583 return ((struct type_pair
*) *slot
)->newobj
;
4585 new_type
= alloc_type_arch (get_type_arch (type
));
4587 /* We must add the new type to the hash table immediately, in case
4588 we encounter this type again during a recursive call below. */
4589 stored
= XOBNEW (&objfile
->objfile_obstack
, struct type_pair
);
4591 stored
->newobj
= new_type
;
4594 /* Copy the common fields of types. For the main type, we simply
4595 copy the entire thing and then update specific fields as needed. */
4596 *TYPE_MAIN_TYPE (new_type
) = *TYPE_MAIN_TYPE (type
);
4597 TYPE_OBJFILE_OWNED (new_type
) = 0;
4598 TYPE_OWNER (new_type
).gdbarch
= get_type_arch (type
);
4600 if (TYPE_NAME (type
))
4601 TYPE_NAME (new_type
) = xstrdup (TYPE_NAME (type
));
4602 if (TYPE_TAG_NAME (type
))
4603 TYPE_TAG_NAME (new_type
) = xstrdup (TYPE_TAG_NAME (type
));
4605 TYPE_INSTANCE_FLAGS (new_type
) = TYPE_INSTANCE_FLAGS (type
);
4606 TYPE_LENGTH (new_type
) = TYPE_LENGTH (type
);
4608 /* Copy the fields. */
4609 if (TYPE_NFIELDS (type
))
4613 nfields
= TYPE_NFIELDS (type
);
4614 TYPE_FIELDS (new_type
) = XCNEWVEC (struct field
, nfields
);
4615 for (i
= 0; i
< nfields
; i
++)
4617 TYPE_FIELD_ARTIFICIAL (new_type
, i
) =
4618 TYPE_FIELD_ARTIFICIAL (type
, i
);
4619 TYPE_FIELD_BITSIZE (new_type
, i
) = TYPE_FIELD_BITSIZE (type
, i
);
4620 if (TYPE_FIELD_TYPE (type
, i
))
4621 TYPE_FIELD_TYPE (new_type
, i
)
4622 = copy_type_recursive (objfile
, TYPE_FIELD_TYPE (type
, i
),
4624 if (TYPE_FIELD_NAME (type
, i
))
4625 TYPE_FIELD_NAME (new_type
, i
) =
4626 xstrdup (TYPE_FIELD_NAME (type
, i
));
4627 switch (TYPE_FIELD_LOC_KIND (type
, i
))
4629 case FIELD_LOC_KIND_BITPOS
:
4630 SET_FIELD_BITPOS (TYPE_FIELD (new_type
, i
),
4631 TYPE_FIELD_BITPOS (type
, i
));
4633 case FIELD_LOC_KIND_ENUMVAL
:
4634 SET_FIELD_ENUMVAL (TYPE_FIELD (new_type
, i
),
4635 TYPE_FIELD_ENUMVAL (type
, i
));
4637 case FIELD_LOC_KIND_PHYSADDR
:
4638 SET_FIELD_PHYSADDR (TYPE_FIELD (new_type
, i
),
4639 TYPE_FIELD_STATIC_PHYSADDR (type
, i
));
4641 case FIELD_LOC_KIND_PHYSNAME
:
4642 SET_FIELD_PHYSNAME (TYPE_FIELD (new_type
, i
),
4643 xstrdup (TYPE_FIELD_STATIC_PHYSNAME (type
,
4647 internal_error (__FILE__
, __LINE__
,
4648 _("Unexpected type field location kind: %d"),
4649 TYPE_FIELD_LOC_KIND (type
, i
));
4654 /* For range types, copy the bounds information. */
4655 if (TYPE_CODE (type
) == TYPE_CODE_RANGE
)
4657 TYPE_RANGE_DATA (new_type
) = XNEW (struct range_bounds
);
4658 *TYPE_RANGE_DATA (new_type
) = *TYPE_RANGE_DATA (type
);
4661 if (TYPE_DYN_PROP_LIST (type
) != NULL
)
4662 TYPE_DYN_PROP_LIST (new_type
)
4663 = copy_dynamic_prop_list (&objfile
->objfile_obstack
,
4664 TYPE_DYN_PROP_LIST (type
));
4667 /* Copy pointers to other types. */
4668 if (TYPE_TARGET_TYPE (type
))
4669 TYPE_TARGET_TYPE (new_type
) =
4670 copy_type_recursive (objfile
,
4671 TYPE_TARGET_TYPE (type
),
4674 /* Maybe copy the type_specific bits.
4676 NOTE drow/2005-12-09: We do not copy the C++-specific bits like
4677 base classes and methods. There's no fundamental reason why we
4678 can't, but at the moment it is not needed. */
4680 switch (TYPE_SPECIFIC_FIELD (type
))
4682 case TYPE_SPECIFIC_NONE
:
4684 case TYPE_SPECIFIC_FUNC
:
4685 INIT_FUNC_SPECIFIC (new_type
);
4686 TYPE_CALLING_CONVENTION (new_type
) = TYPE_CALLING_CONVENTION (type
);
4687 TYPE_NO_RETURN (new_type
) = TYPE_NO_RETURN (type
);
4688 TYPE_TAIL_CALL_LIST (new_type
) = NULL
;
4690 case TYPE_SPECIFIC_FLOATFORMAT
:
4691 TYPE_FLOATFORMAT (new_type
) = TYPE_FLOATFORMAT (type
);
4693 case TYPE_SPECIFIC_CPLUS_STUFF
:
4694 INIT_CPLUS_SPECIFIC (new_type
);
4696 case TYPE_SPECIFIC_GNAT_STUFF
:
4697 INIT_GNAT_SPECIFIC (new_type
);
4699 case TYPE_SPECIFIC_SELF_TYPE
:
4700 set_type_self_type (new_type
,
4701 copy_type_recursive (objfile
, TYPE_SELF_TYPE (type
),
4705 gdb_assert_not_reached ("bad type_specific_kind");
4711 /* Make a copy of the given TYPE, except that the pointer & reference
4712 types are not preserved.
4714 This function assumes that the given type has an associated objfile.
4715 This objfile is used to allocate the new type. */
4718 copy_type (const struct type
*type
)
4720 struct type
*new_type
;
4722 gdb_assert (TYPE_OBJFILE_OWNED (type
));
4724 new_type
= alloc_type_copy (type
);
4725 TYPE_INSTANCE_FLAGS (new_type
) = TYPE_INSTANCE_FLAGS (type
);
4726 TYPE_LENGTH (new_type
) = TYPE_LENGTH (type
);
4727 memcpy (TYPE_MAIN_TYPE (new_type
), TYPE_MAIN_TYPE (type
),
4728 sizeof (struct main_type
));
4729 if (TYPE_DYN_PROP_LIST (type
) != NULL
)
4730 TYPE_DYN_PROP_LIST (new_type
)
4731 = copy_dynamic_prop_list (&TYPE_OBJFILE (type
) -> objfile_obstack
,
4732 TYPE_DYN_PROP_LIST (type
));
4737 /* Helper functions to initialize architecture-specific types. */
4739 /* Allocate a type structure associated with GDBARCH and set its
4740 CODE, LENGTH, and NAME fields. */
4743 arch_type (struct gdbarch
*gdbarch
,
4744 enum type_code code
, int length
, const char *name
)
4748 type
= alloc_type_arch (gdbarch
);
4749 set_type_code (type
, code
);
4750 TYPE_LENGTH (type
) = length
;
4753 TYPE_NAME (type
) = gdbarch_obstack_strdup (gdbarch
, name
);
4758 /* Allocate a TYPE_CODE_INT type structure associated with GDBARCH.
4759 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
4760 the type's TYPE_UNSIGNED flag. NAME is the type name. */
4763 arch_integer_type (struct gdbarch
*gdbarch
,
4764 int bit
, int unsigned_p
, const char *name
)
4768 t
= arch_type (gdbarch
, TYPE_CODE_INT
, bit
/ TARGET_CHAR_BIT
, name
);
4770 TYPE_UNSIGNED (t
) = 1;
4775 /* Allocate a TYPE_CODE_CHAR type structure associated with GDBARCH.
4776 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
4777 the type's TYPE_UNSIGNED flag. NAME is the type name. */
4780 arch_character_type (struct gdbarch
*gdbarch
,
4781 int bit
, int unsigned_p
, const char *name
)
4785 t
= arch_type (gdbarch
, TYPE_CODE_CHAR
, bit
/ TARGET_CHAR_BIT
, name
);
4787 TYPE_UNSIGNED (t
) = 1;
4792 /* Allocate a TYPE_CODE_BOOL type structure associated with GDBARCH.
4793 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
4794 the type's TYPE_UNSIGNED flag. NAME is the type name. */
4797 arch_boolean_type (struct gdbarch
*gdbarch
,
4798 int bit
, int unsigned_p
, const char *name
)
4802 t
= arch_type (gdbarch
, TYPE_CODE_BOOL
, bit
/ TARGET_CHAR_BIT
, name
);
4804 TYPE_UNSIGNED (t
) = 1;
4809 /* Allocate a TYPE_CODE_FLT type structure associated with GDBARCH.
4810 BIT is the type size in bits; if BIT equals -1, the size is
4811 determined by the floatformat. NAME is the type name. Set the
4812 TYPE_FLOATFORMAT from FLOATFORMATS. */
4815 arch_float_type (struct gdbarch
*gdbarch
,
4816 int bit
, const char *name
,
4817 const struct floatformat
**floatformats
)
4821 bit
= verify_floatformat (bit
, floatformats
);
4822 t
= arch_type (gdbarch
, TYPE_CODE_FLT
, bit
/ TARGET_CHAR_BIT
, name
);
4823 TYPE_FLOATFORMAT (t
) = floatformats
;
4828 /* Allocate a TYPE_CODE_DECFLOAT type structure associated with GDBARCH.
4829 BIT is the type size in bits. NAME is the type name. */
4832 arch_decfloat_type (struct gdbarch
*gdbarch
, int bit
, const char *name
)
4836 t
= arch_type (gdbarch
, TYPE_CODE_DECFLOAT
, bit
/ TARGET_CHAR_BIT
, name
);
4840 /* Allocate a TYPE_CODE_COMPLEX type structure associated with GDBARCH.
4841 NAME is the type name. TARGET_TYPE is the component float type. */
4844 arch_complex_type (struct gdbarch
*gdbarch
,
4845 const char *name
, struct type
*target_type
)
4849 t
= arch_type (gdbarch
, TYPE_CODE_COMPLEX
,
4850 2 * TYPE_LENGTH (target_type
), name
);
4851 TYPE_TARGET_TYPE (t
) = target_type
;
4855 /* Allocate a TYPE_CODE_PTR type structure associated with GDBARCH.
4856 BIT is the pointer type size in bits. NAME is the type name.
4857 TARGET_TYPE is the pointer target type. Always sets the pointer type's
4858 TYPE_UNSIGNED flag. */
4861 arch_pointer_type (struct gdbarch
*gdbarch
,
4862 int bit
, const char *name
, struct type
*target_type
)
4866 t
= arch_type (gdbarch
, TYPE_CODE_PTR
, bit
/ TARGET_CHAR_BIT
, name
);
4867 TYPE_TARGET_TYPE (t
) = target_type
;
4868 TYPE_UNSIGNED (t
) = 1;
4872 /* Allocate a TYPE_CODE_FLAGS type structure associated with GDBARCH.
4873 NAME is the type name. LENGTH is the size of the flag word in bytes. */
4876 arch_flags_type (struct gdbarch
*gdbarch
, const char *name
, int length
)
4878 int max_nfields
= length
* TARGET_CHAR_BIT
;
4881 type
= arch_type (gdbarch
, TYPE_CODE_FLAGS
, length
, name
);
4882 TYPE_UNSIGNED (type
) = 1;
4883 TYPE_NFIELDS (type
) = 0;
4884 /* Pre-allocate enough space assuming every field is one bit. */
4886 = (struct field
*) TYPE_ZALLOC (type
, max_nfields
* sizeof (struct field
));
4891 /* Add field to TYPE_CODE_FLAGS type TYPE to indicate the bit at
4892 position BITPOS is called NAME. Pass NAME as "" for fields that
4893 should not be printed. */
4896 append_flags_type_field (struct type
*type
, int start_bitpos
, int nr_bits
,
4897 struct type
*field_type
, const char *name
)
4899 int type_bitsize
= TYPE_LENGTH (type
) * TARGET_CHAR_BIT
;
4900 int field_nr
= TYPE_NFIELDS (type
);
4902 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_FLAGS
);
4903 gdb_assert (TYPE_NFIELDS (type
) + 1 <= type_bitsize
);
4904 gdb_assert (start_bitpos
>= 0 && start_bitpos
< type_bitsize
);
4905 gdb_assert (nr_bits
>= 1 && nr_bits
<= type_bitsize
);
4906 gdb_assert (name
!= NULL
);
4908 TYPE_FIELD_NAME (type
, field_nr
) = xstrdup (name
);
4909 TYPE_FIELD_TYPE (type
, field_nr
) = field_type
;
4910 SET_FIELD_BITPOS (TYPE_FIELD (type
, field_nr
), start_bitpos
);
4911 TYPE_FIELD_BITSIZE (type
, field_nr
) = nr_bits
;
4912 ++TYPE_NFIELDS (type
);
4915 /* Special version of append_flags_type_field to add a flag field.
4916 Add field to TYPE_CODE_FLAGS type TYPE to indicate the bit at
4917 position BITPOS is called NAME. */
4920 append_flags_type_flag (struct type
*type
, int bitpos
, const char *name
)
4922 struct gdbarch
*gdbarch
= get_type_arch (type
);
4924 append_flags_type_field (type
, bitpos
, 1,
4925 builtin_type (gdbarch
)->builtin_bool
,
4929 /* Allocate a TYPE_CODE_STRUCT or TYPE_CODE_UNION type structure (as
4930 specified by CODE) associated with GDBARCH. NAME is the type name. */
4933 arch_composite_type (struct gdbarch
*gdbarch
, const char *name
,
4934 enum type_code code
)
4938 gdb_assert (code
== TYPE_CODE_STRUCT
|| code
== TYPE_CODE_UNION
);
4939 t
= arch_type (gdbarch
, code
, 0, NULL
);
4940 TYPE_TAG_NAME (t
) = name
;
4941 INIT_CPLUS_SPECIFIC (t
);
4945 /* Add new field with name NAME and type FIELD to composite type T.
4946 Do not set the field's position or adjust the type's length;
4947 the caller should do so. Return the new field. */
4950 append_composite_type_field_raw (struct type
*t
, const char *name
,
4955 TYPE_NFIELDS (t
) = TYPE_NFIELDS (t
) + 1;
4956 TYPE_FIELDS (t
) = XRESIZEVEC (struct field
, TYPE_FIELDS (t
),
4958 f
= &(TYPE_FIELDS (t
)[TYPE_NFIELDS (t
) - 1]);
4959 memset (f
, 0, sizeof f
[0]);
4960 FIELD_TYPE (f
[0]) = field
;
4961 FIELD_NAME (f
[0]) = name
;
4965 /* Add new field with name NAME and type FIELD to composite type T.
4966 ALIGNMENT (if non-zero) specifies the minimum field alignment. */
4969 append_composite_type_field_aligned (struct type
*t
, const char *name
,
4970 struct type
*field
, int alignment
)
4972 struct field
*f
= append_composite_type_field_raw (t
, name
, field
);
4974 if (TYPE_CODE (t
) == TYPE_CODE_UNION
)
4976 if (TYPE_LENGTH (t
) < TYPE_LENGTH (field
))
4977 TYPE_LENGTH (t
) = TYPE_LENGTH (field
);
4979 else if (TYPE_CODE (t
) == TYPE_CODE_STRUCT
)
4981 TYPE_LENGTH (t
) = TYPE_LENGTH (t
) + TYPE_LENGTH (field
);
4982 if (TYPE_NFIELDS (t
) > 1)
4984 SET_FIELD_BITPOS (f
[0],
4985 (FIELD_BITPOS (f
[-1])
4986 + (TYPE_LENGTH (FIELD_TYPE (f
[-1]))
4987 * TARGET_CHAR_BIT
)));
4993 alignment
*= TARGET_CHAR_BIT
;
4994 left
= FIELD_BITPOS (f
[0]) % alignment
;
4998 SET_FIELD_BITPOS (f
[0], FIELD_BITPOS (f
[0]) + (alignment
- left
));
4999 TYPE_LENGTH (t
) += (alignment
- left
) / TARGET_CHAR_BIT
;
5006 /* Add new field with name NAME and type FIELD to composite type T. */
5009 append_composite_type_field (struct type
*t
, const char *name
,
5012 append_composite_type_field_aligned (t
, name
, field
, 0);
5015 static struct gdbarch_data
*gdbtypes_data
;
5017 const struct builtin_type
*
5018 builtin_type (struct gdbarch
*gdbarch
)
5020 return (const struct builtin_type
*) gdbarch_data (gdbarch
, gdbtypes_data
);
5024 gdbtypes_post_init (struct gdbarch
*gdbarch
)
5026 struct builtin_type
*builtin_type
5027 = GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct builtin_type
);
5030 builtin_type
->builtin_void
5031 = arch_type (gdbarch
, TYPE_CODE_VOID
, 1, "void");
5032 builtin_type
->builtin_char
5033 = arch_integer_type (gdbarch
, TARGET_CHAR_BIT
,
5034 !gdbarch_char_signed (gdbarch
), "char");
5035 TYPE_NOSIGN (builtin_type
->builtin_char
) = 1;
5036 builtin_type
->builtin_signed_char
5037 = arch_integer_type (gdbarch
, TARGET_CHAR_BIT
,
5039 builtin_type
->builtin_unsigned_char
5040 = arch_integer_type (gdbarch
, TARGET_CHAR_BIT
,
5041 1, "unsigned char");
5042 builtin_type
->builtin_short
5043 = arch_integer_type (gdbarch
, gdbarch_short_bit (gdbarch
),
5045 builtin_type
->builtin_unsigned_short
5046 = arch_integer_type (gdbarch
, gdbarch_short_bit (gdbarch
),
5047 1, "unsigned short");
5048 builtin_type
->builtin_int
5049 = arch_integer_type (gdbarch
, gdbarch_int_bit (gdbarch
),
5051 builtin_type
->builtin_unsigned_int
5052 = arch_integer_type (gdbarch
, gdbarch_int_bit (gdbarch
),
5054 builtin_type
->builtin_long
5055 = arch_integer_type (gdbarch
, gdbarch_long_bit (gdbarch
),
5057 builtin_type
->builtin_unsigned_long
5058 = arch_integer_type (gdbarch
, gdbarch_long_bit (gdbarch
),
5059 1, "unsigned long");
5060 builtin_type
->builtin_long_long
5061 = arch_integer_type (gdbarch
, gdbarch_long_long_bit (gdbarch
),
5063 builtin_type
->builtin_unsigned_long_long
5064 = arch_integer_type (gdbarch
, gdbarch_long_long_bit (gdbarch
),
5065 1, "unsigned long long");
5066 builtin_type
->builtin_float
5067 = arch_float_type (gdbarch
, gdbarch_float_bit (gdbarch
),
5068 "float", gdbarch_float_format (gdbarch
));
5069 builtin_type
->builtin_double
5070 = arch_float_type (gdbarch
, gdbarch_double_bit (gdbarch
),
5071 "double", gdbarch_double_format (gdbarch
));
5072 builtin_type
->builtin_long_double
5073 = arch_float_type (gdbarch
, gdbarch_long_double_bit (gdbarch
),
5074 "long double", gdbarch_long_double_format (gdbarch
));
5075 builtin_type
->builtin_complex
5076 = arch_complex_type (gdbarch
, "complex",
5077 builtin_type
->builtin_float
);
5078 builtin_type
->builtin_double_complex
5079 = arch_complex_type (gdbarch
, "double complex",
5080 builtin_type
->builtin_double
);
5081 builtin_type
->builtin_string
5082 = arch_type (gdbarch
, TYPE_CODE_STRING
, 1, "string");
5083 builtin_type
->builtin_bool
5084 = arch_type (gdbarch
, TYPE_CODE_BOOL
, 1, "bool");
5086 /* The following three are about decimal floating point types, which
5087 are 32-bits, 64-bits and 128-bits respectively. */
5088 builtin_type
->builtin_decfloat
5089 = arch_decfloat_type (gdbarch
, 32, "_Decimal32");
5090 builtin_type
->builtin_decdouble
5091 = arch_decfloat_type (gdbarch
, 64, "_Decimal64");
5092 builtin_type
->builtin_declong
5093 = arch_decfloat_type (gdbarch
, 128, "_Decimal128");
5095 /* "True" character types. */
5096 builtin_type
->builtin_true_char
5097 = arch_character_type (gdbarch
, TARGET_CHAR_BIT
, 0, "true character");
5098 builtin_type
->builtin_true_unsigned_char
5099 = arch_character_type (gdbarch
, TARGET_CHAR_BIT
, 1, "true character");
5101 /* Fixed-size integer types. */
5102 builtin_type
->builtin_int0
5103 = arch_integer_type (gdbarch
, 0, 0, "int0_t");
5104 builtin_type
->builtin_int8
5105 = arch_integer_type (gdbarch
, 8, 0, "int8_t");
5106 builtin_type
->builtin_uint8
5107 = arch_integer_type (gdbarch
, 8, 1, "uint8_t");
5108 builtin_type
->builtin_int16
5109 = arch_integer_type (gdbarch
, 16, 0, "int16_t");
5110 builtin_type
->builtin_uint16
5111 = arch_integer_type (gdbarch
, 16, 1, "uint16_t");
5112 builtin_type
->builtin_int32
5113 = arch_integer_type (gdbarch
, 32, 0, "int32_t");
5114 builtin_type
->builtin_uint32
5115 = arch_integer_type (gdbarch
, 32, 1, "uint32_t");
5116 builtin_type
->builtin_int64
5117 = arch_integer_type (gdbarch
, 64, 0, "int64_t");
5118 builtin_type
->builtin_uint64
5119 = arch_integer_type (gdbarch
, 64, 1, "uint64_t");
5120 builtin_type
->builtin_int128
5121 = arch_integer_type (gdbarch
, 128, 0, "int128_t");
5122 builtin_type
->builtin_uint128
5123 = arch_integer_type (gdbarch
, 128, 1, "uint128_t");
5124 TYPE_INSTANCE_FLAGS (builtin_type
->builtin_int8
) |=
5125 TYPE_INSTANCE_FLAG_NOTTEXT
;
5126 TYPE_INSTANCE_FLAGS (builtin_type
->builtin_uint8
) |=
5127 TYPE_INSTANCE_FLAG_NOTTEXT
;
5129 /* Wide character types. */
5130 builtin_type
->builtin_char16
5131 = arch_integer_type (gdbarch
, 16, 0, "char16_t");
5132 builtin_type
->builtin_char32
5133 = arch_integer_type (gdbarch
, 32, 0, "char32_t");
5136 /* Default data/code pointer types. */
5137 builtin_type
->builtin_data_ptr
5138 = lookup_pointer_type (builtin_type
->builtin_void
);
5139 builtin_type
->builtin_func_ptr
5140 = lookup_pointer_type (lookup_function_type (builtin_type
->builtin_void
));
5141 builtin_type
->builtin_func_func
5142 = lookup_function_type (builtin_type
->builtin_func_ptr
);
5144 /* This type represents a GDB internal function. */
5145 builtin_type
->internal_fn
5146 = arch_type (gdbarch
, TYPE_CODE_INTERNAL_FUNCTION
, 0,
5147 "<internal function>");
5149 /* This type represents an xmethod. */
5150 builtin_type
->xmethod
5151 = arch_type (gdbarch
, TYPE_CODE_XMETHOD
, 0, "<xmethod>");
5153 return builtin_type
;
5156 /* This set of objfile-based types is intended to be used by symbol
5157 readers as basic types. */
5159 static const struct objfile_data
*objfile_type_data
;
5161 const struct objfile_type
*
5162 objfile_type (struct objfile
*objfile
)
5164 struct gdbarch
*gdbarch
;
5165 struct objfile_type
*objfile_type
5166 = (struct objfile_type
*) objfile_data (objfile
, objfile_type_data
);
5169 return objfile_type
;
5171 objfile_type
= OBSTACK_CALLOC (&objfile
->objfile_obstack
,
5172 1, struct objfile_type
);
5174 /* Use the objfile architecture to determine basic type properties. */
5175 gdbarch
= get_objfile_arch (objfile
);
5178 objfile_type
->builtin_void
5179 = init_type (objfile
, TYPE_CODE_VOID
, 1, "void");
5180 objfile_type
->builtin_char
5181 = init_integer_type (objfile
, TARGET_CHAR_BIT
,
5182 !gdbarch_char_signed (gdbarch
), "char");
5183 TYPE_NOSIGN (objfile_type
->builtin_char
) = 1;
5184 objfile_type
->builtin_signed_char
5185 = init_integer_type (objfile
, TARGET_CHAR_BIT
,
5187 objfile_type
->builtin_unsigned_char
5188 = init_integer_type (objfile
, TARGET_CHAR_BIT
,
5189 1, "unsigned char");
5190 objfile_type
->builtin_short
5191 = init_integer_type (objfile
, gdbarch_short_bit (gdbarch
),
5193 objfile_type
->builtin_unsigned_short
5194 = init_integer_type (objfile
, gdbarch_short_bit (gdbarch
),
5195 1, "unsigned short");
5196 objfile_type
->builtin_int
5197 = init_integer_type (objfile
, gdbarch_int_bit (gdbarch
),
5199 objfile_type
->builtin_unsigned_int
5200 = init_integer_type (objfile
, gdbarch_int_bit (gdbarch
),
5202 objfile_type
->builtin_long
5203 = init_integer_type (objfile
, gdbarch_long_bit (gdbarch
),
5205 objfile_type
->builtin_unsigned_long
5206 = init_integer_type (objfile
, gdbarch_long_bit (gdbarch
),
5207 1, "unsigned long");
5208 objfile_type
->builtin_long_long
5209 = init_integer_type (objfile
, gdbarch_long_long_bit (gdbarch
),
5211 objfile_type
->builtin_unsigned_long_long
5212 = init_integer_type (objfile
, gdbarch_long_long_bit (gdbarch
),
5213 1, "unsigned long long");
5214 objfile_type
->builtin_float
5215 = init_float_type (objfile
, gdbarch_float_bit (gdbarch
),
5216 "float", gdbarch_float_format (gdbarch
));
5217 objfile_type
->builtin_double
5218 = init_float_type (objfile
, gdbarch_double_bit (gdbarch
),
5219 "double", gdbarch_double_format (gdbarch
));
5220 objfile_type
->builtin_long_double
5221 = init_float_type (objfile
, gdbarch_long_double_bit (gdbarch
),
5222 "long double", gdbarch_long_double_format (gdbarch
));
5224 /* This type represents a type that was unrecognized in symbol read-in. */
5225 objfile_type
->builtin_error
5226 = init_type (objfile
, TYPE_CODE_ERROR
, 0, "<unknown type>");
5228 /* The following set of types is used for symbols with no
5229 debug information. */
5230 objfile_type
->nodebug_text_symbol
5231 = init_type (objfile
, TYPE_CODE_FUNC
, 1,
5232 "<text variable, no debug info>");
5233 TYPE_TARGET_TYPE (objfile_type
->nodebug_text_symbol
)
5234 = objfile_type
->builtin_int
;
5235 objfile_type
->nodebug_text_gnu_ifunc_symbol
5236 = init_type (objfile
, TYPE_CODE_FUNC
, 1,
5237 "<text gnu-indirect-function variable, no debug info>");
5238 TYPE_TARGET_TYPE (objfile_type
->nodebug_text_gnu_ifunc_symbol
)
5239 = objfile_type
->nodebug_text_symbol
;
5240 TYPE_GNU_IFUNC (objfile_type
->nodebug_text_gnu_ifunc_symbol
) = 1;
5241 objfile_type
->nodebug_got_plt_symbol
5242 = init_pointer_type (objfile
, gdbarch_addr_bit (gdbarch
),
5243 "<text from jump slot in .got.plt, no debug info>",
5244 objfile_type
->nodebug_text_symbol
);
5245 objfile_type
->nodebug_data_symbol
5246 = init_integer_type (objfile
, gdbarch_int_bit (gdbarch
), 0,
5247 "<data variable, no debug info>");
5248 objfile_type
->nodebug_unknown_symbol
5249 = init_integer_type (objfile
, TARGET_CHAR_BIT
, 0,
5250 "<variable (not text or data), no debug info>");
5251 objfile_type
->nodebug_tls_symbol
5252 = init_integer_type (objfile
, gdbarch_int_bit (gdbarch
), 0,
5253 "<thread local variable, no debug info>");
5255 /* NOTE: on some targets, addresses and pointers are not necessarily
5259 - gdb's `struct type' always describes the target's
5261 - gdb's `struct value' objects should always hold values in
5263 - gdb's CORE_ADDR values are addresses in the unified virtual
5264 address space that the assembler and linker work with. Thus,
5265 since target_read_memory takes a CORE_ADDR as an argument, it
5266 can access any memory on the target, even if the processor has
5267 separate code and data address spaces.
5269 In this context, objfile_type->builtin_core_addr is a bit odd:
5270 it's a target type for a value the target will never see. It's
5271 only used to hold the values of (typeless) linker symbols, which
5272 are indeed in the unified virtual address space. */
5274 objfile_type
->builtin_core_addr
5275 = init_integer_type (objfile
, gdbarch_addr_bit (gdbarch
), 1,
5278 set_objfile_data (objfile
, objfile_type_data
, objfile_type
);
5279 return objfile_type
;
5282 extern initialize_file_ftype _initialize_gdbtypes
;
5285 _initialize_gdbtypes (void)
5287 gdbtypes_data
= gdbarch_data_register_post_init (gdbtypes_post_init
);
5288 objfile_type_data
= register_objfile_data ();
5290 add_setshow_zuinteger_cmd ("overload", no_class
, &overload_debug
,
5291 _("Set debugging of C++ overloading."),
5292 _("Show debugging of C++ overloading."),
5293 _("When enabled, ranking of the "
5294 "functions is displayed."),
5296 show_overload_debug
,
5297 &setdebuglist
, &showdebuglist
);
5299 /* Add user knob for controlling resolution of opaque types. */
5300 add_setshow_boolean_cmd ("opaque-type-resolution", class_support
,
5301 &opaque_type_resolution
,
5302 _("Set resolution of opaque struct/class/union"
5303 " types (if set before loading symbols)."),
5304 _("Show resolution of opaque struct/class/union"
5305 " types (if set before loading symbols)."),
5307 show_opaque_type_resolution
,
5308 &setlist
, &showlist
);
5310 /* Add an option to permit non-strict type checking. */
5311 add_setshow_boolean_cmd ("type", class_support
,
5312 &strict_type_checking
,
5313 _("Set strict type checking."),
5314 _("Show strict type checking."),
5316 show_strict_type_checking
,
5317 &setchecklist
, &showchecklist
);