1 /* Support routines for manipulating internal types for GDB.
3 Copyright (C) 1992-2016 Free Software Foundation, Inc.
5 Contributed by Cygnus Support, using pieces from other GDB modules.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
28 #include "expression.h"
33 #include "complaints.h"
37 #include "cp-support.h"
39 #include "dwarf2loc.h"
42 /* Initialize BADNESS constants. */
44 const struct rank LENGTH_MISMATCH_BADNESS
= {100,0};
46 const struct rank TOO_FEW_PARAMS_BADNESS
= {100,0};
47 const struct rank INCOMPATIBLE_TYPE_BADNESS
= {100,0};
49 const struct rank EXACT_MATCH_BADNESS
= {0,0};
51 const struct rank INTEGER_PROMOTION_BADNESS
= {1,0};
52 const struct rank FLOAT_PROMOTION_BADNESS
= {1,0};
53 const struct rank BASE_PTR_CONVERSION_BADNESS
= {1,0};
54 const struct rank INTEGER_CONVERSION_BADNESS
= {2,0};
55 const struct rank FLOAT_CONVERSION_BADNESS
= {2,0};
56 const struct rank INT_FLOAT_CONVERSION_BADNESS
= {2,0};
57 const struct rank VOID_PTR_CONVERSION_BADNESS
= {2,0};
58 const struct rank BOOL_CONVERSION_BADNESS
= {3,0};
59 const struct rank BASE_CONVERSION_BADNESS
= {2,0};
60 const struct rank REFERENCE_CONVERSION_BADNESS
= {2,0};
61 const struct rank NULL_POINTER_CONVERSION_BADNESS
= {2,0};
62 const struct rank NS_POINTER_CONVERSION_BADNESS
= {10,0};
63 const struct rank NS_INTEGER_POINTER_CONVERSION_BADNESS
= {3,0};
65 /* Floatformat pairs. */
66 const struct floatformat
*floatformats_ieee_half
[BFD_ENDIAN_UNKNOWN
] = {
67 &floatformat_ieee_half_big
,
68 &floatformat_ieee_half_little
70 const struct floatformat
*floatformats_ieee_single
[BFD_ENDIAN_UNKNOWN
] = {
71 &floatformat_ieee_single_big
,
72 &floatformat_ieee_single_little
74 const struct floatformat
*floatformats_ieee_double
[BFD_ENDIAN_UNKNOWN
] = {
75 &floatformat_ieee_double_big
,
76 &floatformat_ieee_double_little
78 const struct floatformat
*floatformats_ieee_double_littlebyte_bigword
[BFD_ENDIAN_UNKNOWN
] = {
79 &floatformat_ieee_double_big
,
80 &floatformat_ieee_double_littlebyte_bigword
82 const struct floatformat
*floatformats_i387_ext
[BFD_ENDIAN_UNKNOWN
] = {
83 &floatformat_i387_ext
,
86 const struct floatformat
*floatformats_m68881_ext
[BFD_ENDIAN_UNKNOWN
] = {
87 &floatformat_m68881_ext
,
88 &floatformat_m68881_ext
90 const struct floatformat
*floatformats_arm_ext
[BFD_ENDIAN_UNKNOWN
] = {
91 &floatformat_arm_ext_big
,
92 &floatformat_arm_ext_littlebyte_bigword
94 const struct floatformat
*floatformats_ia64_spill
[BFD_ENDIAN_UNKNOWN
] = {
95 &floatformat_ia64_spill_big
,
96 &floatformat_ia64_spill_little
98 const struct floatformat
*floatformats_ia64_quad
[BFD_ENDIAN_UNKNOWN
] = {
99 &floatformat_ia64_quad_big
,
100 &floatformat_ia64_quad_little
102 const struct floatformat
*floatformats_vax_f
[BFD_ENDIAN_UNKNOWN
] = {
106 const struct floatformat
*floatformats_vax_d
[BFD_ENDIAN_UNKNOWN
] = {
110 const struct floatformat
*floatformats_ibm_long_double
[BFD_ENDIAN_UNKNOWN
] = {
111 &floatformat_ibm_long_double_big
,
112 &floatformat_ibm_long_double_little
115 /* Should opaque types be resolved? */
117 static int opaque_type_resolution
= 1;
119 /* A flag to enable printing of debugging information of C++
122 unsigned int overload_debug
= 0;
124 /* A flag to enable strict type checking. */
126 static int strict_type_checking
= 1;
128 /* A function to show whether opaque types are resolved. */
131 show_opaque_type_resolution (struct ui_file
*file
, int from_tty
,
132 struct cmd_list_element
*c
,
135 fprintf_filtered (file
, _("Resolution of opaque struct/class/union types "
136 "(if set before loading symbols) is %s.\n"),
140 /* A function to show whether C++ overload debugging is enabled. */
143 show_overload_debug (struct ui_file
*file
, int from_tty
,
144 struct cmd_list_element
*c
, const char *value
)
146 fprintf_filtered (file
, _("Debugging of C++ overloading is %s.\n"),
150 /* A function to show the status of strict type checking. */
153 show_strict_type_checking (struct ui_file
*file
, int from_tty
,
154 struct cmd_list_element
*c
, const char *value
)
156 fprintf_filtered (file
, _("Strict type checking is %s.\n"), value
);
160 /* Allocate a new OBJFILE-associated type structure and fill it
161 with some defaults. Space for the type structure is allocated
162 on the objfile's objfile_obstack. */
165 alloc_type (struct objfile
*objfile
)
169 gdb_assert (objfile
!= NULL
);
171 /* Alloc the structure and start off with all fields zeroed. */
172 type
= OBSTACK_ZALLOC (&objfile
->objfile_obstack
, struct type
);
173 TYPE_MAIN_TYPE (type
) = OBSTACK_ZALLOC (&objfile
->objfile_obstack
,
175 OBJSTAT (objfile
, n_types
++);
177 TYPE_OBJFILE_OWNED (type
) = 1;
178 TYPE_OWNER (type
).objfile
= objfile
;
180 /* Initialize the fields that might not be zero. */
182 TYPE_CODE (type
) = TYPE_CODE_UNDEF
;
183 TYPE_CHAIN (type
) = type
; /* Chain back to itself. */
188 /* Allocate a new GDBARCH-associated type structure and fill it
189 with some defaults. Space for the type structure is allocated
190 on the obstack associated with GDBARCH. */
193 alloc_type_arch (struct gdbarch
*gdbarch
)
197 gdb_assert (gdbarch
!= NULL
);
199 /* Alloc the structure and start off with all fields zeroed. */
201 type
= GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct type
);
202 TYPE_MAIN_TYPE (type
) = GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct main_type
);
204 TYPE_OBJFILE_OWNED (type
) = 0;
205 TYPE_OWNER (type
).gdbarch
= gdbarch
;
207 /* Initialize the fields that might not be zero. */
209 TYPE_CODE (type
) = TYPE_CODE_UNDEF
;
210 TYPE_CHAIN (type
) = type
; /* Chain back to itself. */
215 /* If TYPE is objfile-associated, allocate a new type structure
216 associated with the same objfile. If TYPE is gdbarch-associated,
217 allocate a new type structure associated with the same gdbarch. */
220 alloc_type_copy (const struct type
*type
)
222 if (TYPE_OBJFILE_OWNED (type
))
223 return alloc_type (TYPE_OWNER (type
).objfile
);
225 return alloc_type_arch (TYPE_OWNER (type
).gdbarch
);
228 /* If TYPE is gdbarch-associated, return that architecture.
229 If TYPE is objfile-associated, return that objfile's architecture. */
232 get_type_arch (const struct type
*type
)
234 if (TYPE_OBJFILE_OWNED (type
))
235 return get_objfile_arch (TYPE_OWNER (type
).objfile
);
237 return TYPE_OWNER (type
).gdbarch
;
240 /* See gdbtypes.h. */
243 get_target_type (struct type
*type
)
247 type
= TYPE_TARGET_TYPE (type
);
249 type
= check_typedef (type
);
255 /* See gdbtypes.h. */
258 type_length_units (struct type
*type
)
260 struct gdbarch
*arch
= get_type_arch (type
);
261 int unit_size
= gdbarch_addressable_memory_unit_size (arch
);
263 return TYPE_LENGTH (type
) / unit_size
;
266 /* Alloc a new type instance structure, fill it with some defaults,
267 and point it at OLDTYPE. Allocate the new type instance from the
268 same place as OLDTYPE. */
271 alloc_type_instance (struct type
*oldtype
)
275 /* Allocate the structure. */
277 if (! TYPE_OBJFILE_OWNED (oldtype
))
278 type
= XCNEW (struct type
);
280 type
= OBSTACK_ZALLOC (&TYPE_OBJFILE (oldtype
)->objfile_obstack
,
283 TYPE_MAIN_TYPE (type
) = TYPE_MAIN_TYPE (oldtype
);
285 TYPE_CHAIN (type
) = type
; /* Chain back to itself for now. */
290 /* Clear all remnants of the previous type at TYPE, in preparation for
291 replacing it with something else. Preserve owner information. */
294 smash_type (struct type
*type
)
296 int objfile_owned
= TYPE_OBJFILE_OWNED (type
);
297 union type_owner owner
= TYPE_OWNER (type
);
299 memset (TYPE_MAIN_TYPE (type
), 0, sizeof (struct main_type
));
301 /* Restore owner information. */
302 TYPE_OBJFILE_OWNED (type
) = objfile_owned
;
303 TYPE_OWNER (type
) = owner
;
305 /* For now, delete the rings. */
306 TYPE_CHAIN (type
) = type
;
308 /* For now, leave the pointer/reference types alone. */
311 /* Lookup a pointer to a type TYPE. TYPEPTR, if nonzero, points
312 to a pointer to memory where the pointer type should be stored.
313 If *TYPEPTR is zero, update it to point to the pointer type we return.
314 We allocate new memory if needed. */
317 make_pointer_type (struct type
*type
, struct type
**typeptr
)
319 struct type
*ntype
; /* New type */
322 ntype
= TYPE_POINTER_TYPE (type
);
327 return ntype
; /* Don't care about alloc,
328 and have new type. */
329 else if (*typeptr
== 0)
331 *typeptr
= ntype
; /* Tracking alloc, and have new type. */
336 if (typeptr
== 0 || *typeptr
== 0) /* We'll need to allocate one. */
338 ntype
= alloc_type_copy (type
);
342 else /* We have storage, but need to reset it. */
345 chain
= TYPE_CHAIN (ntype
);
347 TYPE_CHAIN (ntype
) = chain
;
350 TYPE_TARGET_TYPE (ntype
) = type
;
351 TYPE_POINTER_TYPE (type
) = ntype
;
353 /* FIXME! Assumes the machine has only one representation for pointers! */
356 = gdbarch_ptr_bit (get_type_arch (type
)) / TARGET_CHAR_BIT
;
357 TYPE_CODE (ntype
) = TYPE_CODE_PTR
;
359 /* Mark pointers as unsigned. The target converts between pointers
360 and addresses (CORE_ADDRs) using gdbarch_pointer_to_address and
361 gdbarch_address_to_pointer. */
362 TYPE_UNSIGNED (ntype
) = 1;
364 /* Update the length of all the other variants of this type. */
365 chain
= TYPE_CHAIN (ntype
);
366 while (chain
!= ntype
)
368 TYPE_LENGTH (chain
) = TYPE_LENGTH (ntype
);
369 chain
= TYPE_CHAIN (chain
);
375 /* Given a type TYPE, return a type of pointers to that type.
376 May need to construct such a type if this is the first use. */
379 lookup_pointer_type (struct type
*type
)
381 return make_pointer_type (type
, (struct type
**) 0);
384 /* Lookup a C++ `reference' to a type TYPE. TYPEPTR, if nonzero,
385 points to a pointer to memory where the reference type should be
386 stored. If *TYPEPTR is zero, update it to point to the reference
387 type we return. We allocate new memory if needed. */
390 make_reference_type (struct type
*type
, struct type
**typeptr
)
392 struct type
*ntype
; /* New type */
395 ntype
= TYPE_REFERENCE_TYPE (type
);
400 return ntype
; /* Don't care about alloc,
401 and have new type. */
402 else if (*typeptr
== 0)
404 *typeptr
= ntype
; /* Tracking alloc, and have new type. */
409 if (typeptr
== 0 || *typeptr
== 0) /* We'll need to allocate one. */
411 ntype
= alloc_type_copy (type
);
415 else /* We have storage, but need to reset it. */
418 chain
= TYPE_CHAIN (ntype
);
420 TYPE_CHAIN (ntype
) = chain
;
423 TYPE_TARGET_TYPE (ntype
) = type
;
424 TYPE_REFERENCE_TYPE (type
) = ntype
;
426 /* FIXME! Assume the machine has only one representation for
427 references, and that it matches the (only) representation for
430 TYPE_LENGTH (ntype
) =
431 gdbarch_ptr_bit (get_type_arch (type
)) / TARGET_CHAR_BIT
;
432 TYPE_CODE (ntype
) = TYPE_CODE_REF
;
434 if (!TYPE_REFERENCE_TYPE (type
)) /* Remember it, if don't have one. */
435 TYPE_REFERENCE_TYPE (type
) = ntype
;
437 /* Update the length of all the other variants of this type. */
438 chain
= TYPE_CHAIN (ntype
);
439 while (chain
!= ntype
)
441 TYPE_LENGTH (chain
) = TYPE_LENGTH (ntype
);
442 chain
= TYPE_CHAIN (chain
);
448 /* Same as above, but caller doesn't care about memory allocation
452 lookup_reference_type (struct type
*type
)
454 return make_reference_type (type
, (struct type
**) 0);
457 /* Lookup a function type that returns type TYPE. TYPEPTR, if
458 nonzero, points to a pointer to memory where the function type
459 should be stored. If *TYPEPTR is zero, update it to point to the
460 function type we return. We allocate new memory if needed. */
463 make_function_type (struct type
*type
, struct type
**typeptr
)
465 struct type
*ntype
; /* New type */
467 if (typeptr
== 0 || *typeptr
== 0) /* We'll need to allocate one. */
469 ntype
= alloc_type_copy (type
);
473 else /* We have storage, but need to reset it. */
479 TYPE_TARGET_TYPE (ntype
) = type
;
481 TYPE_LENGTH (ntype
) = 1;
482 TYPE_CODE (ntype
) = TYPE_CODE_FUNC
;
484 INIT_FUNC_SPECIFIC (ntype
);
489 /* Given a type TYPE, return a type of functions that return that type.
490 May need to construct such a type if this is the first use. */
493 lookup_function_type (struct type
*type
)
495 return make_function_type (type
, (struct type
**) 0);
498 /* Given a type TYPE and argument types, return the appropriate
499 function type. If the final type in PARAM_TYPES is NULL, make a
503 lookup_function_type_with_arguments (struct type
*type
,
505 struct type
**param_types
)
507 struct type
*fn
= make_function_type (type
, (struct type
**) 0);
512 if (param_types
[nparams
- 1] == NULL
)
515 TYPE_VARARGS (fn
) = 1;
517 else if (TYPE_CODE (check_typedef (param_types
[nparams
- 1]))
521 /* Caller should have ensured this. */
522 gdb_assert (nparams
== 0);
523 TYPE_PROTOTYPED (fn
) = 1;
527 TYPE_NFIELDS (fn
) = nparams
;
529 = (struct field
*) TYPE_ZALLOC (fn
, nparams
* sizeof (struct field
));
530 for (i
= 0; i
< nparams
; ++i
)
531 TYPE_FIELD_TYPE (fn
, i
) = param_types
[i
];
536 /* Identify address space identifier by name --
537 return the integer flag defined in gdbtypes.h. */
540 address_space_name_to_int (struct gdbarch
*gdbarch
, char *space_identifier
)
544 /* Check for known address space delimiters. */
545 if (!strcmp (space_identifier
, "code"))
546 return TYPE_INSTANCE_FLAG_CODE_SPACE
;
547 else if (!strcmp (space_identifier
, "data"))
548 return TYPE_INSTANCE_FLAG_DATA_SPACE
;
549 else if (gdbarch_address_class_name_to_type_flags_p (gdbarch
)
550 && gdbarch_address_class_name_to_type_flags (gdbarch
,
555 error (_("Unknown address space specifier: \"%s\""), space_identifier
);
558 /* Identify address space identifier by integer flag as defined in
559 gdbtypes.h -- return the string version of the adress space name. */
562 address_space_int_to_name (struct gdbarch
*gdbarch
, int space_flag
)
564 if (space_flag
& TYPE_INSTANCE_FLAG_CODE_SPACE
)
566 else if (space_flag
& TYPE_INSTANCE_FLAG_DATA_SPACE
)
568 else if ((space_flag
& TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL
)
569 && gdbarch_address_class_type_flags_to_name_p (gdbarch
))
570 return gdbarch_address_class_type_flags_to_name (gdbarch
, space_flag
);
575 /* Create a new type with instance flags NEW_FLAGS, based on TYPE.
577 If STORAGE is non-NULL, create the new type instance there.
578 STORAGE must be in the same obstack as TYPE. */
581 make_qualified_type (struct type
*type
, int new_flags
,
582 struct type
*storage
)
589 if (TYPE_INSTANCE_FLAGS (ntype
) == new_flags
)
591 ntype
= TYPE_CHAIN (ntype
);
593 while (ntype
!= type
);
595 /* Create a new type instance. */
597 ntype
= alloc_type_instance (type
);
600 /* If STORAGE was provided, it had better be in the same objfile
601 as TYPE. Otherwise, we can't link it into TYPE's cv chain:
602 if one objfile is freed and the other kept, we'd have
603 dangling pointers. */
604 gdb_assert (TYPE_OBJFILE (type
) == TYPE_OBJFILE (storage
));
607 TYPE_MAIN_TYPE (ntype
) = TYPE_MAIN_TYPE (type
);
608 TYPE_CHAIN (ntype
) = ntype
;
611 /* Pointers or references to the original type are not relevant to
613 TYPE_POINTER_TYPE (ntype
) = (struct type
*) 0;
614 TYPE_REFERENCE_TYPE (ntype
) = (struct type
*) 0;
616 /* Chain the new qualified type to the old type. */
617 TYPE_CHAIN (ntype
) = TYPE_CHAIN (type
);
618 TYPE_CHAIN (type
) = ntype
;
620 /* Now set the instance flags and return the new type. */
621 TYPE_INSTANCE_FLAGS (ntype
) = new_flags
;
623 /* Set length of new type to that of the original type. */
624 TYPE_LENGTH (ntype
) = TYPE_LENGTH (type
);
629 /* Make an address-space-delimited variant of a type -- a type that
630 is identical to the one supplied except that it has an address
631 space attribute attached to it (such as "code" or "data").
633 The space attributes "code" and "data" are for Harvard
634 architectures. The address space attributes are for architectures
635 which have alternately sized pointers or pointers with alternate
639 make_type_with_address_space (struct type
*type
, int space_flag
)
641 int new_flags
= ((TYPE_INSTANCE_FLAGS (type
)
642 & ~(TYPE_INSTANCE_FLAG_CODE_SPACE
643 | TYPE_INSTANCE_FLAG_DATA_SPACE
644 | TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL
))
647 return make_qualified_type (type
, new_flags
, NULL
);
650 /* Make a "c-v" variant of a type -- a type that is identical to the
651 one supplied except that it may have const or volatile attributes
652 CNST is a flag for setting the const attribute
653 VOLTL is a flag for setting the volatile attribute
654 TYPE is the base type whose variant we are creating.
656 If TYPEPTR and *TYPEPTR are non-zero, then *TYPEPTR points to
657 storage to hold the new qualified type; *TYPEPTR and TYPE must be
658 in the same objfile. Otherwise, allocate fresh memory for the new
659 type whereever TYPE lives. If TYPEPTR is non-zero, set it to the
660 new type we construct. */
663 make_cv_type (int cnst
, int voltl
,
665 struct type
**typeptr
)
667 struct type
*ntype
; /* New type */
669 int new_flags
= (TYPE_INSTANCE_FLAGS (type
)
670 & ~(TYPE_INSTANCE_FLAG_CONST
671 | TYPE_INSTANCE_FLAG_VOLATILE
));
674 new_flags
|= TYPE_INSTANCE_FLAG_CONST
;
677 new_flags
|= TYPE_INSTANCE_FLAG_VOLATILE
;
679 if (typeptr
&& *typeptr
!= NULL
)
681 /* TYPE and *TYPEPTR must be in the same objfile. We can't have
682 a C-V variant chain that threads across objfiles: if one
683 objfile gets freed, then the other has a broken C-V chain.
685 This code used to try to copy over the main type from TYPE to
686 *TYPEPTR if they were in different objfiles, but that's
687 wrong, too: TYPE may have a field list or member function
688 lists, which refer to types of their own, etc. etc. The
689 whole shebang would need to be copied over recursively; you
690 can't have inter-objfile pointers. The only thing to do is
691 to leave stub types as stub types, and look them up afresh by
692 name each time you encounter them. */
693 gdb_assert (TYPE_OBJFILE (*typeptr
) == TYPE_OBJFILE (type
));
696 ntype
= make_qualified_type (type
, new_flags
,
697 typeptr
? *typeptr
: NULL
);
705 /* Make a 'restrict'-qualified version of TYPE. */
708 make_restrict_type (struct type
*type
)
710 return make_qualified_type (type
,
711 (TYPE_INSTANCE_FLAGS (type
)
712 | TYPE_INSTANCE_FLAG_RESTRICT
),
716 /* Make a type without const, volatile, or restrict. */
719 make_unqualified_type (struct type
*type
)
721 return make_qualified_type (type
,
722 (TYPE_INSTANCE_FLAGS (type
)
723 & ~(TYPE_INSTANCE_FLAG_CONST
724 | TYPE_INSTANCE_FLAG_VOLATILE
725 | TYPE_INSTANCE_FLAG_RESTRICT
)),
729 /* Make a '_Atomic'-qualified version of TYPE. */
732 make_atomic_type (struct type
*type
)
734 return make_qualified_type (type
,
735 (TYPE_INSTANCE_FLAGS (type
)
736 | TYPE_INSTANCE_FLAG_ATOMIC
),
740 /* Replace the contents of ntype with the type *type. This changes the
741 contents, rather than the pointer for TYPE_MAIN_TYPE (ntype); thus
742 the changes are propogated to all types in the TYPE_CHAIN.
744 In order to build recursive types, it's inevitable that we'll need
745 to update types in place --- but this sort of indiscriminate
746 smashing is ugly, and needs to be replaced with something more
747 controlled. TYPE_MAIN_TYPE is a step in this direction; it's not
748 clear if more steps are needed. */
751 replace_type (struct type
*ntype
, struct type
*type
)
755 /* These two types had better be in the same objfile. Otherwise,
756 the assignment of one type's main type structure to the other
757 will produce a type with references to objects (names; field
758 lists; etc.) allocated on an objfile other than its own. */
759 gdb_assert (TYPE_OBJFILE (ntype
) == TYPE_OBJFILE (type
));
761 *TYPE_MAIN_TYPE (ntype
) = *TYPE_MAIN_TYPE (type
);
763 /* The type length is not a part of the main type. Update it for
764 each type on the variant chain. */
768 /* Assert that this element of the chain has no address-class bits
769 set in its flags. Such type variants might have type lengths
770 which are supposed to be different from the non-address-class
771 variants. This assertion shouldn't ever be triggered because
772 symbol readers which do construct address-class variants don't
773 call replace_type(). */
774 gdb_assert (TYPE_ADDRESS_CLASS_ALL (chain
) == 0);
776 TYPE_LENGTH (chain
) = TYPE_LENGTH (type
);
777 chain
= TYPE_CHAIN (chain
);
779 while (ntype
!= chain
);
781 /* Assert that the two types have equivalent instance qualifiers.
782 This should be true for at least all of our debug readers. */
783 gdb_assert (TYPE_INSTANCE_FLAGS (ntype
) == TYPE_INSTANCE_FLAGS (type
));
786 /* Implement direct support for MEMBER_TYPE in GNU C++.
787 May need to construct such a type if this is the first use.
788 The TYPE is the type of the member. The DOMAIN is the type
789 of the aggregate that the member belongs to. */
792 lookup_memberptr_type (struct type
*type
, struct type
*domain
)
796 mtype
= alloc_type_copy (type
);
797 smash_to_memberptr_type (mtype
, domain
, type
);
801 /* Return a pointer-to-method type, for a method of type TO_TYPE. */
804 lookup_methodptr_type (struct type
*to_type
)
808 mtype
= alloc_type_copy (to_type
);
809 smash_to_methodptr_type (mtype
, to_type
);
813 /* Allocate a stub method whose return type is TYPE. This apparently
814 happens for speed of symbol reading, since parsing out the
815 arguments to the method is cpu-intensive, the way we are doing it.
816 So, we will fill in arguments later. This always returns a fresh
820 allocate_stub_method (struct type
*type
)
824 mtype
= alloc_type_copy (type
);
825 TYPE_CODE (mtype
) = TYPE_CODE_METHOD
;
826 TYPE_LENGTH (mtype
) = 1;
827 TYPE_STUB (mtype
) = 1;
828 TYPE_TARGET_TYPE (mtype
) = type
;
829 /* TYPE_SELF_TYPE (mtype) = unknown yet */
833 /* Create a range type with a dynamic range from LOW_BOUND to
834 HIGH_BOUND, inclusive. See create_range_type for further details. */
837 create_range_type (struct type
*result_type
, struct type
*index_type
,
838 const struct dynamic_prop
*low_bound
,
839 const struct dynamic_prop
*high_bound
)
841 if (result_type
== NULL
)
842 result_type
= alloc_type_copy (index_type
);
843 TYPE_CODE (result_type
) = TYPE_CODE_RANGE
;
844 TYPE_TARGET_TYPE (result_type
) = index_type
;
845 if (TYPE_STUB (index_type
))
846 TYPE_TARGET_STUB (result_type
) = 1;
848 TYPE_LENGTH (result_type
) = TYPE_LENGTH (check_typedef (index_type
));
850 TYPE_RANGE_DATA (result_type
) = (struct range_bounds
*)
851 TYPE_ZALLOC (result_type
, sizeof (struct range_bounds
));
852 TYPE_RANGE_DATA (result_type
)->low
= *low_bound
;
853 TYPE_RANGE_DATA (result_type
)->high
= *high_bound
;
855 if (low_bound
->kind
== PROP_CONST
&& low_bound
->data
.const_val
>= 0)
856 TYPE_UNSIGNED (result_type
) = 1;
858 /* Ada allows the declaration of range types whose upper bound is
859 less than the lower bound, so checking the lower bound is not
860 enough. Make sure we do not mark a range type whose upper bound
861 is negative as unsigned. */
862 if (high_bound
->kind
== PROP_CONST
&& high_bound
->data
.const_val
< 0)
863 TYPE_UNSIGNED (result_type
) = 0;
868 /* Create a range type using either a blank type supplied in
869 RESULT_TYPE, or creating a new type, inheriting the objfile from
872 Indices will be of type INDEX_TYPE, and will range from LOW_BOUND
873 to HIGH_BOUND, inclusive.
875 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
876 sure it is TYPE_CODE_UNDEF before we bash it into a range type? */
879 create_static_range_type (struct type
*result_type
, struct type
*index_type
,
880 LONGEST low_bound
, LONGEST high_bound
)
882 struct dynamic_prop low
, high
;
884 low
.kind
= PROP_CONST
;
885 low
.data
.const_val
= low_bound
;
887 high
.kind
= PROP_CONST
;
888 high
.data
.const_val
= high_bound
;
890 result_type
= create_range_type (result_type
, index_type
, &low
, &high
);
895 /* Predicate tests whether BOUNDS are static. Returns 1 if all bounds values
896 are static, otherwise returns 0. */
899 has_static_range (const struct range_bounds
*bounds
)
901 return (bounds
->low
.kind
== PROP_CONST
902 && bounds
->high
.kind
== PROP_CONST
);
906 /* Set *LOWP and *HIGHP to the lower and upper bounds of discrete type
907 TYPE. Return 1 if type is a range type, 0 if it is discrete (and
908 bounds will fit in LONGEST), or -1 otherwise. */
911 get_discrete_bounds (struct type
*type
, LONGEST
*lowp
, LONGEST
*highp
)
913 type
= check_typedef (type
);
914 switch (TYPE_CODE (type
))
916 case TYPE_CODE_RANGE
:
917 *lowp
= TYPE_LOW_BOUND (type
);
918 *highp
= TYPE_HIGH_BOUND (type
);
921 if (TYPE_NFIELDS (type
) > 0)
923 /* The enums may not be sorted by value, so search all
927 *lowp
= *highp
= TYPE_FIELD_ENUMVAL (type
, 0);
928 for (i
= 0; i
< TYPE_NFIELDS (type
); i
++)
930 if (TYPE_FIELD_ENUMVAL (type
, i
) < *lowp
)
931 *lowp
= TYPE_FIELD_ENUMVAL (type
, i
);
932 if (TYPE_FIELD_ENUMVAL (type
, i
) > *highp
)
933 *highp
= TYPE_FIELD_ENUMVAL (type
, i
);
936 /* Set unsigned indicator if warranted. */
939 TYPE_UNSIGNED (type
) = 1;
953 if (TYPE_LENGTH (type
) > sizeof (LONGEST
)) /* Too big */
955 if (!TYPE_UNSIGNED (type
))
957 *lowp
= -(1 << (TYPE_LENGTH (type
) * TARGET_CHAR_BIT
- 1));
961 /* ... fall through for unsigned ints ... */
964 /* This round-about calculation is to avoid shifting by
965 TYPE_LENGTH (type) * TARGET_CHAR_BIT, which will not work
966 if TYPE_LENGTH (type) == sizeof (LONGEST). */
967 *highp
= 1 << (TYPE_LENGTH (type
) * TARGET_CHAR_BIT
- 1);
968 *highp
= (*highp
- 1) | *highp
;
975 /* Assuming TYPE is a simple, non-empty array type, compute its upper
976 and lower bound. Save the low bound into LOW_BOUND if not NULL.
977 Save the high bound into HIGH_BOUND if not NULL.
979 Return 1 if the operation was successful. Return zero otherwise,
980 in which case the values of LOW_BOUND and HIGH_BOUNDS are unmodified.
982 We now simply use get_discrete_bounds call to get the values
983 of the low and high bounds.
984 get_discrete_bounds can return three values:
985 1, meaning that index is a range,
986 0, meaning that index is a discrete type,
987 or -1 for failure. */
990 get_array_bounds (struct type
*type
, LONGEST
*low_bound
, LONGEST
*high_bound
)
992 struct type
*index
= TYPE_INDEX_TYPE (type
);
1000 res
= get_discrete_bounds (index
, &low
, &high
);
1004 /* Check if the array bounds are undefined. */
1006 && ((low_bound
&& TYPE_ARRAY_LOWER_BOUND_IS_UNDEFINED (type
))
1007 || (high_bound
&& TYPE_ARRAY_UPPER_BOUND_IS_UNDEFINED (type
))))
1019 /* Assuming that TYPE is a discrete type and VAL is a valid integer
1020 representation of a value of this type, save the corresponding
1021 position number in POS.
1023 Its differs from VAL only in the case of enumeration types. In
1024 this case, the position number of the value of the first listed
1025 enumeration literal is zero; the position number of the value of
1026 each subsequent enumeration literal is one more than that of its
1027 predecessor in the list.
1029 Return 1 if the operation was successful. Return zero otherwise,
1030 in which case the value of POS is unmodified.
1034 discrete_position (struct type
*type
, LONGEST val
, LONGEST
*pos
)
1036 if (TYPE_CODE (type
) == TYPE_CODE_ENUM
)
1040 for (i
= 0; i
< TYPE_NFIELDS (type
); i
+= 1)
1042 if (val
== TYPE_FIELD_ENUMVAL (type
, i
))
1048 /* Invalid enumeration value. */
1058 /* Create an array type using either a blank type supplied in
1059 RESULT_TYPE, or creating a new type, inheriting the objfile from
1062 Elements will be of type ELEMENT_TYPE, the indices will be of type
1065 If BIT_STRIDE is not zero, build a packed array type whose element
1066 size is BIT_STRIDE. Otherwise, ignore this parameter.
1068 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
1069 sure it is TYPE_CODE_UNDEF before we bash it into an array
1073 create_array_type_with_stride (struct type
*result_type
,
1074 struct type
*element_type
,
1075 struct type
*range_type
,
1076 unsigned int bit_stride
)
1078 if (result_type
== NULL
)
1079 result_type
= alloc_type_copy (range_type
);
1081 TYPE_CODE (result_type
) = TYPE_CODE_ARRAY
;
1082 TYPE_TARGET_TYPE (result_type
) = element_type
;
1083 if (has_static_range (TYPE_RANGE_DATA (range_type
))
1084 && (!type_not_associated (result_type
)
1085 && !type_not_allocated (result_type
)))
1087 LONGEST low_bound
, high_bound
;
1089 if (get_discrete_bounds (range_type
, &low_bound
, &high_bound
) < 0)
1090 low_bound
= high_bound
= 0;
1091 element_type
= check_typedef (element_type
);
1092 /* Be careful when setting the array length. Ada arrays can be
1093 empty arrays with the high_bound being smaller than the low_bound.
1094 In such cases, the array length should be zero. */
1095 if (high_bound
< low_bound
)
1096 TYPE_LENGTH (result_type
) = 0;
1097 else if (bit_stride
> 0)
1098 TYPE_LENGTH (result_type
) =
1099 (bit_stride
* (high_bound
- low_bound
+ 1) + 7) / 8;
1101 TYPE_LENGTH (result_type
) =
1102 TYPE_LENGTH (element_type
) * (high_bound
- low_bound
+ 1);
1106 /* This type is dynamic and its length needs to be computed
1107 on demand. In the meantime, avoid leaving the TYPE_LENGTH
1108 undefined by setting it to zero. Although we are not expected
1109 to trust TYPE_LENGTH in this case, setting the size to zero
1110 allows us to avoid allocating objects of random sizes in case
1111 we accidently do. */
1112 TYPE_LENGTH (result_type
) = 0;
1115 TYPE_NFIELDS (result_type
) = 1;
1116 TYPE_FIELDS (result_type
) =
1117 (struct field
*) TYPE_ZALLOC (result_type
, sizeof (struct field
));
1118 TYPE_INDEX_TYPE (result_type
) = range_type
;
1120 TYPE_FIELD_BITSIZE (result_type
, 0) = bit_stride
;
1122 /* TYPE_TARGET_STUB will take care of zero length arrays. */
1123 if (TYPE_LENGTH (result_type
) == 0)
1124 TYPE_TARGET_STUB (result_type
) = 1;
1129 /* Same as create_array_type_with_stride but with no bit_stride
1130 (BIT_STRIDE = 0), thus building an unpacked array. */
1133 create_array_type (struct type
*result_type
,
1134 struct type
*element_type
,
1135 struct type
*range_type
)
1137 return create_array_type_with_stride (result_type
, element_type
,
1142 lookup_array_range_type (struct type
*element_type
,
1143 LONGEST low_bound
, LONGEST high_bound
)
1145 struct gdbarch
*gdbarch
= get_type_arch (element_type
);
1146 struct type
*index_type
= builtin_type (gdbarch
)->builtin_int
;
1147 struct type
*range_type
1148 = create_static_range_type (NULL
, index_type
, low_bound
, high_bound
);
1150 return create_array_type (NULL
, element_type
, range_type
);
1153 /* Create a string type using either a blank type supplied in
1154 RESULT_TYPE, or creating a new type. String types are similar
1155 enough to array of char types that we can use create_array_type to
1156 build the basic type and then bash it into a string type.
1158 For fixed length strings, the range type contains 0 as the lower
1159 bound and the length of the string minus one as the upper bound.
1161 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
1162 sure it is TYPE_CODE_UNDEF before we bash it into a string
1166 create_string_type (struct type
*result_type
,
1167 struct type
*string_char_type
,
1168 struct type
*range_type
)
1170 result_type
= create_array_type (result_type
,
1173 TYPE_CODE (result_type
) = TYPE_CODE_STRING
;
1178 lookup_string_range_type (struct type
*string_char_type
,
1179 LONGEST low_bound
, LONGEST high_bound
)
1181 struct type
*result_type
;
1183 result_type
= lookup_array_range_type (string_char_type
,
1184 low_bound
, high_bound
);
1185 TYPE_CODE (result_type
) = TYPE_CODE_STRING
;
1190 create_set_type (struct type
*result_type
, struct type
*domain_type
)
1192 if (result_type
== NULL
)
1193 result_type
= alloc_type_copy (domain_type
);
1195 TYPE_CODE (result_type
) = TYPE_CODE_SET
;
1196 TYPE_NFIELDS (result_type
) = 1;
1197 TYPE_FIELDS (result_type
)
1198 = (struct field
*) TYPE_ZALLOC (result_type
, sizeof (struct field
));
1200 if (!TYPE_STUB (domain_type
))
1202 LONGEST low_bound
, high_bound
, bit_length
;
1204 if (get_discrete_bounds (domain_type
, &low_bound
, &high_bound
) < 0)
1205 low_bound
= high_bound
= 0;
1206 bit_length
= high_bound
- low_bound
+ 1;
1207 TYPE_LENGTH (result_type
)
1208 = (bit_length
+ TARGET_CHAR_BIT
- 1) / TARGET_CHAR_BIT
;
1210 TYPE_UNSIGNED (result_type
) = 1;
1212 TYPE_FIELD_TYPE (result_type
, 0) = domain_type
;
1217 /* Convert ARRAY_TYPE to a vector type. This may modify ARRAY_TYPE
1218 and any array types nested inside it. */
1221 make_vector_type (struct type
*array_type
)
1223 struct type
*inner_array
, *elt_type
;
1226 /* Find the innermost array type, in case the array is
1227 multi-dimensional. */
1228 inner_array
= array_type
;
1229 while (TYPE_CODE (TYPE_TARGET_TYPE (inner_array
)) == TYPE_CODE_ARRAY
)
1230 inner_array
= TYPE_TARGET_TYPE (inner_array
);
1232 elt_type
= TYPE_TARGET_TYPE (inner_array
);
1233 if (TYPE_CODE (elt_type
) == TYPE_CODE_INT
)
1235 flags
= TYPE_INSTANCE_FLAGS (elt_type
) | TYPE_INSTANCE_FLAG_NOTTEXT
;
1236 elt_type
= make_qualified_type (elt_type
, flags
, NULL
);
1237 TYPE_TARGET_TYPE (inner_array
) = elt_type
;
1240 TYPE_VECTOR (array_type
) = 1;
1244 init_vector_type (struct type
*elt_type
, int n
)
1246 struct type
*array_type
;
1248 array_type
= lookup_array_range_type (elt_type
, 0, n
- 1);
1249 make_vector_type (array_type
);
1253 /* Internal routine called by TYPE_SELF_TYPE to return the type that TYPE
1254 belongs to. In c++ this is the class of "this", but TYPE_THIS_TYPE is too
1255 confusing. "self" is a common enough replacement for "this".
1256 TYPE must be one of TYPE_CODE_METHODPTR, TYPE_CODE_MEMBERPTR, or
1257 TYPE_CODE_METHOD. */
1260 internal_type_self_type (struct type
*type
)
1262 switch (TYPE_CODE (type
))
1264 case TYPE_CODE_METHODPTR
:
1265 case TYPE_CODE_MEMBERPTR
:
1266 if (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_NONE
)
1268 gdb_assert (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_SELF_TYPE
);
1269 return TYPE_MAIN_TYPE (type
)->type_specific
.self_type
;
1270 case TYPE_CODE_METHOD
:
1271 if (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_NONE
)
1273 gdb_assert (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_FUNC
);
1274 return TYPE_MAIN_TYPE (type
)->type_specific
.func_stuff
->self_type
;
1276 gdb_assert_not_reached ("bad type");
1280 /* Set the type of the class that TYPE belongs to.
1281 In c++ this is the class of "this".
1282 TYPE must be one of TYPE_CODE_METHODPTR, TYPE_CODE_MEMBERPTR, or
1283 TYPE_CODE_METHOD. */
1286 set_type_self_type (struct type
*type
, struct type
*self_type
)
1288 switch (TYPE_CODE (type
))
1290 case TYPE_CODE_METHODPTR
:
1291 case TYPE_CODE_MEMBERPTR
:
1292 if (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_NONE
)
1293 TYPE_SPECIFIC_FIELD (type
) = TYPE_SPECIFIC_SELF_TYPE
;
1294 gdb_assert (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_SELF_TYPE
);
1295 TYPE_MAIN_TYPE (type
)->type_specific
.self_type
= self_type
;
1297 case TYPE_CODE_METHOD
:
1298 if (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_NONE
)
1299 INIT_FUNC_SPECIFIC (type
);
1300 gdb_assert (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_FUNC
);
1301 TYPE_MAIN_TYPE (type
)->type_specific
.func_stuff
->self_type
= self_type
;
1304 gdb_assert_not_reached ("bad type");
1308 /* Smash TYPE to be a type of pointers to members of SELF_TYPE with type
1309 TO_TYPE. A member pointer is a wierd thing -- it amounts to a
1310 typed offset into a struct, e.g. "an int at offset 8". A MEMBER
1311 TYPE doesn't include the offset (that's the value of the MEMBER
1312 itself), but does include the structure type into which it points
1315 When "smashing" the type, we preserve the objfile that the old type
1316 pointed to, since we aren't changing where the type is actually
1320 smash_to_memberptr_type (struct type
*type
, struct type
*self_type
,
1321 struct type
*to_type
)
1324 TYPE_CODE (type
) = TYPE_CODE_MEMBERPTR
;
1325 TYPE_TARGET_TYPE (type
) = to_type
;
1326 set_type_self_type (type
, self_type
);
1327 /* Assume that a data member pointer is the same size as a normal
1330 = gdbarch_ptr_bit (get_type_arch (to_type
)) / TARGET_CHAR_BIT
;
1333 /* Smash TYPE to be a type of pointer to methods type TO_TYPE.
1335 When "smashing" the type, we preserve the objfile that the old type
1336 pointed to, since we aren't changing where the type is actually
1340 smash_to_methodptr_type (struct type
*type
, struct type
*to_type
)
1343 TYPE_CODE (type
) = TYPE_CODE_METHODPTR
;
1344 TYPE_TARGET_TYPE (type
) = to_type
;
1345 set_type_self_type (type
, TYPE_SELF_TYPE (to_type
));
1346 TYPE_LENGTH (type
) = cplus_method_ptr_size (to_type
);
1349 /* Smash TYPE to be a type of method of SELF_TYPE with type TO_TYPE.
1350 METHOD just means `function that gets an extra "this" argument'.
1352 When "smashing" the type, we preserve the objfile that the old type
1353 pointed to, since we aren't changing where the type is actually
1357 smash_to_method_type (struct type
*type
, struct type
*self_type
,
1358 struct type
*to_type
, struct field
*args
,
1359 int nargs
, int varargs
)
1362 TYPE_CODE (type
) = TYPE_CODE_METHOD
;
1363 TYPE_TARGET_TYPE (type
) = to_type
;
1364 set_type_self_type (type
, self_type
);
1365 TYPE_FIELDS (type
) = args
;
1366 TYPE_NFIELDS (type
) = nargs
;
1368 TYPE_VARARGS (type
) = 1;
1369 TYPE_LENGTH (type
) = 1; /* In practice, this is never needed. */
1372 /* Return a typename for a struct/union/enum type without "struct ",
1373 "union ", or "enum ". If the type has a NULL name, return NULL. */
1376 type_name_no_tag (const struct type
*type
)
1378 if (TYPE_TAG_NAME (type
) != NULL
)
1379 return TYPE_TAG_NAME (type
);
1381 /* Is there code which expects this to return the name if there is
1382 no tag name? My guess is that this is mainly used for C++ in
1383 cases where the two will always be the same. */
1384 return TYPE_NAME (type
);
1387 /* A wrapper of type_name_no_tag which calls error if the type is anonymous.
1388 Since GCC PR debug/47510 DWARF provides associated information to detect the
1389 anonymous class linkage name from its typedef.
1391 Parameter TYPE should not yet have CHECK_TYPEDEF applied, this function will
1395 type_name_no_tag_or_error (struct type
*type
)
1397 struct type
*saved_type
= type
;
1399 struct objfile
*objfile
;
1401 type
= check_typedef (type
);
1403 name
= type_name_no_tag (type
);
1407 name
= type_name_no_tag (saved_type
);
1408 objfile
= TYPE_OBJFILE (saved_type
);
1409 error (_("Invalid anonymous type %s [in module %s], GCC PR debug/47510 bug?"),
1410 name
? name
: "<anonymous>",
1411 objfile
? objfile_name (objfile
) : "<arch>");
1414 /* Lookup a typedef or primitive type named NAME, visible in lexical
1415 block BLOCK. If NOERR is nonzero, return zero if NAME is not
1416 suitably defined. */
1419 lookup_typename (const struct language_defn
*language
,
1420 struct gdbarch
*gdbarch
, const char *name
,
1421 const struct block
*block
, int noerr
)
1425 sym
= lookup_symbol_in_language (name
, block
, VAR_DOMAIN
,
1426 language
->la_language
, NULL
).symbol
;
1427 if (sym
!= NULL
&& SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
1428 return SYMBOL_TYPE (sym
);
1432 error (_("No type named %s."), name
);
1436 lookup_unsigned_typename (const struct language_defn
*language
,
1437 struct gdbarch
*gdbarch
, const char *name
)
1439 char *uns
= (char *) alloca (strlen (name
) + 10);
1441 strcpy (uns
, "unsigned ");
1442 strcpy (uns
+ 9, name
);
1443 return lookup_typename (language
, gdbarch
, uns
, (struct block
*) NULL
, 0);
1447 lookup_signed_typename (const struct language_defn
*language
,
1448 struct gdbarch
*gdbarch
, const char *name
)
1451 char *uns
= (char *) alloca (strlen (name
) + 8);
1453 strcpy (uns
, "signed ");
1454 strcpy (uns
+ 7, name
);
1455 t
= lookup_typename (language
, gdbarch
, uns
, (struct block
*) NULL
, 1);
1456 /* If we don't find "signed FOO" just try again with plain "FOO". */
1459 return lookup_typename (language
, gdbarch
, name
, (struct block
*) NULL
, 0);
1462 /* Lookup a structure type named "struct NAME",
1463 visible in lexical block BLOCK. */
1466 lookup_struct (const char *name
, const struct block
*block
)
1470 sym
= lookup_symbol (name
, block
, STRUCT_DOMAIN
, 0).symbol
;
1474 error (_("No struct type named %s."), name
);
1476 if (TYPE_CODE (SYMBOL_TYPE (sym
)) != TYPE_CODE_STRUCT
)
1478 error (_("This context has class, union or enum %s, not a struct."),
1481 return (SYMBOL_TYPE (sym
));
1484 /* Lookup a union type named "union NAME",
1485 visible in lexical block BLOCK. */
1488 lookup_union (const char *name
, const struct block
*block
)
1493 sym
= lookup_symbol (name
, block
, STRUCT_DOMAIN
, 0).symbol
;
1496 error (_("No union type named %s."), name
);
1498 t
= SYMBOL_TYPE (sym
);
1500 if (TYPE_CODE (t
) == TYPE_CODE_UNION
)
1503 /* If we get here, it's not a union. */
1504 error (_("This context has class, struct or enum %s, not a union."),
1508 /* Lookup an enum type named "enum NAME",
1509 visible in lexical block BLOCK. */
1512 lookup_enum (const char *name
, const struct block
*block
)
1516 sym
= lookup_symbol (name
, block
, STRUCT_DOMAIN
, 0).symbol
;
1519 error (_("No enum type named %s."), name
);
1521 if (TYPE_CODE (SYMBOL_TYPE (sym
)) != TYPE_CODE_ENUM
)
1523 error (_("This context has class, struct or union %s, not an enum."),
1526 return (SYMBOL_TYPE (sym
));
1529 /* Lookup a template type named "template NAME<TYPE>",
1530 visible in lexical block BLOCK. */
1533 lookup_template_type (char *name
, struct type
*type
,
1534 const struct block
*block
)
1537 char *nam
= (char *)
1538 alloca (strlen (name
) + strlen (TYPE_NAME (type
)) + 4);
1542 strcat (nam
, TYPE_NAME (type
));
1543 strcat (nam
, " >"); /* FIXME, extra space still introduced in gcc? */
1545 sym
= lookup_symbol (nam
, block
, VAR_DOMAIN
, 0).symbol
;
1549 error (_("No template type named %s."), name
);
1551 if (TYPE_CODE (SYMBOL_TYPE (sym
)) != TYPE_CODE_STRUCT
)
1553 error (_("This context has class, union or enum %s, not a struct."),
1556 return (SYMBOL_TYPE (sym
));
1559 /* Given a type TYPE, lookup the type of the component of type named
1562 TYPE can be either a struct or union, or a pointer or reference to
1563 a struct or union. If it is a pointer or reference, its target
1564 type is automatically used. Thus '.' and '->' are interchangable,
1565 as specified for the definitions of the expression element types
1566 STRUCTOP_STRUCT and STRUCTOP_PTR.
1568 If NOERR is nonzero, return zero if NAME is not suitably defined.
1569 If NAME is the name of a baseclass type, return that type. */
1572 lookup_struct_elt_type (struct type
*type
, const char *name
, int noerr
)
1579 type
= check_typedef (type
);
1580 if (TYPE_CODE (type
) != TYPE_CODE_PTR
1581 && TYPE_CODE (type
) != TYPE_CODE_REF
)
1583 type
= TYPE_TARGET_TYPE (type
);
1586 if (TYPE_CODE (type
) != TYPE_CODE_STRUCT
1587 && TYPE_CODE (type
) != TYPE_CODE_UNION
)
1589 type_name
= type_to_string (type
);
1590 make_cleanup (xfree
, type_name
);
1591 error (_("Type %s is not a structure or union type."), type_name
);
1595 /* FIXME: This change put in by Michael seems incorrect for the case
1596 where the structure tag name is the same as the member name.
1597 I.e. when doing "ptype bell->bar" for "struct foo { int bar; int
1598 foo; } bell;" Disabled by fnf. */
1602 type_name
= type_name_no_tag (type
);
1603 if (type_name
!= NULL
&& strcmp (type_name
, name
) == 0)
1608 for (i
= TYPE_NFIELDS (type
) - 1; i
>= TYPE_N_BASECLASSES (type
); i
--)
1610 const char *t_field_name
= TYPE_FIELD_NAME (type
, i
);
1612 if (t_field_name
&& (strcmp_iw (t_field_name
, name
) == 0))
1614 return TYPE_FIELD_TYPE (type
, i
);
1616 else if (!t_field_name
|| *t_field_name
== '\0')
1618 struct type
*subtype
1619 = lookup_struct_elt_type (TYPE_FIELD_TYPE (type
, i
), name
, 1);
1621 if (subtype
!= NULL
)
1626 /* OK, it's not in this class. Recursively check the baseclasses. */
1627 for (i
= TYPE_N_BASECLASSES (type
) - 1; i
>= 0; i
--)
1631 t
= lookup_struct_elt_type (TYPE_BASECLASS (type
, i
), name
, 1);
1643 type_name
= type_to_string (type
);
1644 make_cleanup (xfree
, type_name
);
1645 error (_("Type %s has no component named %s."), type_name
, name
);
1648 /* Store in *MAX the largest number representable by unsigned integer type
1652 get_unsigned_type_max (struct type
*type
, ULONGEST
*max
)
1656 type
= check_typedef (type
);
1657 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_INT
&& TYPE_UNSIGNED (type
));
1658 gdb_assert (TYPE_LENGTH (type
) <= sizeof (ULONGEST
));
1660 /* Written this way to avoid overflow. */
1661 n
= TYPE_LENGTH (type
) * TARGET_CHAR_BIT
;
1662 *max
= ((((ULONGEST
) 1 << (n
- 1)) - 1) << 1) | 1;
1665 /* Store in *MIN, *MAX the smallest and largest numbers representable by
1666 signed integer type TYPE. */
1669 get_signed_type_minmax (struct type
*type
, LONGEST
*min
, LONGEST
*max
)
1673 type
= check_typedef (type
);
1674 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_INT
&& !TYPE_UNSIGNED (type
));
1675 gdb_assert (TYPE_LENGTH (type
) <= sizeof (LONGEST
));
1677 n
= TYPE_LENGTH (type
) * TARGET_CHAR_BIT
;
1678 *min
= -((ULONGEST
) 1 << (n
- 1));
1679 *max
= ((ULONGEST
) 1 << (n
- 1)) - 1;
1682 /* Internal routine called by TYPE_VPTR_FIELDNO to return the value of
1683 cplus_stuff.vptr_fieldno.
1685 cplus_stuff is initialized to cplus_struct_default which does not
1686 set vptr_fieldno to -1 for portability reasons (IWBN to use C99
1687 designated initializers). We cope with that here. */
1690 internal_type_vptr_fieldno (struct type
*type
)
1692 type
= check_typedef (type
);
1693 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_STRUCT
1694 || TYPE_CODE (type
) == TYPE_CODE_UNION
);
1695 if (!HAVE_CPLUS_STRUCT (type
))
1697 return TYPE_RAW_CPLUS_SPECIFIC (type
)->vptr_fieldno
;
1700 /* Set the value of cplus_stuff.vptr_fieldno. */
1703 set_type_vptr_fieldno (struct type
*type
, int fieldno
)
1705 type
= check_typedef (type
);
1706 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_STRUCT
1707 || TYPE_CODE (type
) == TYPE_CODE_UNION
);
1708 if (!HAVE_CPLUS_STRUCT (type
))
1709 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
1710 TYPE_RAW_CPLUS_SPECIFIC (type
)->vptr_fieldno
= fieldno
;
1713 /* Internal routine called by TYPE_VPTR_BASETYPE to return the value of
1714 cplus_stuff.vptr_basetype. */
1717 internal_type_vptr_basetype (struct type
*type
)
1719 type
= check_typedef (type
);
1720 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_STRUCT
1721 || TYPE_CODE (type
) == TYPE_CODE_UNION
);
1722 gdb_assert (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_CPLUS_STUFF
);
1723 return TYPE_RAW_CPLUS_SPECIFIC (type
)->vptr_basetype
;
1726 /* Set the value of cplus_stuff.vptr_basetype. */
1729 set_type_vptr_basetype (struct type
*type
, struct type
*basetype
)
1731 type
= check_typedef (type
);
1732 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_STRUCT
1733 || TYPE_CODE (type
) == TYPE_CODE_UNION
);
1734 if (!HAVE_CPLUS_STRUCT (type
))
1735 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
1736 TYPE_RAW_CPLUS_SPECIFIC (type
)->vptr_basetype
= basetype
;
1739 /* Lookup the vptr basetype/fieldno values for TYPE.
1740 If found store vptr_basetype in *BASETYPEP if non-NULL, and return
1741 vptr_fieldno. Also, if found and basetype is from the same objfile,
1743 If not found, return -1 and ignore BASETYPEP.
1744 Callers should be aware that in some cases (for example,
1745 the type or one of its baseclasses is a stub type and we are
1746 debugging a .o file, or the compiler uses DWARF-2 and is not GCC),
1747 this function will not be able to find the
1748 virtual function table pointer, and vptr_fieldno will remain -1 and
1749 vptr_basetype will remain NULL or incomplete. */
1752 get_vptr_fieldno (struct type
*type
, struct type
**basetypep
)
1754 type
= check_typedef (type
);
1756 if (TYPE_VPTR_FIELDNO (type
) < 0)
1760 /* We must start at zero in case the first (and only) baseclass
1761 is virtual (and hence we cannot share the table pointer). */
1762 for (i
= 0; i
< TYPE_N_BASECLASSES (type
); i
++)
1764 struct type
*baseclass
= check_typedef (TYPE_BASECLASS (type
, i
));
1766 struct type
*basetype
;
1768 fieldno
= get_vptr_fieldno (baseclass
, &basetype
);
1771 /* If the type comes from a different objfile we can't cache
1772 it, it may have a different lifetime. PR 2384 */
1773 if (TYPE_OBJFILE (type
) == TYPE_OBJFILE (basetype
))
1775 set_type_vptr_fieldno (type
, fieldno
);
1776 set_type_vptr_basetype (type
, basetype
);
1779 *basetypep
= basetype
;
1790 *basetypep
= TYPE_VPTR_BASETYPE (type
);
1791 return TYPE_VPTR_FIELDNO (type
);
1796 stub_noname_complaint (void)
1798 complaint (&symfile_complaints
, _("stub type has NULL name"));
1801 /* Worker for is_dynamic_type. */
1804 is_dynamic_type_internal (struct type
*type
, int top_level
)
1806 type
= check_typedef (type
);
1808 /* We only want to recognize references at the outermost level. */
1809 if (top_level
&& TYPE_CODE (type
) == TYPE_CODE_REF
)
1810 type
= check_typedef (TYPE_TARGET_TYPE (type
));
1812 /* Types that have a dynamic TYPE_DATA_LOCATION are considered
1813 dynamic, even if the type itself is statically defined.
1814 From a user's point of view, this may appear counter-intuitive;
1815 but it makes sense in this context, because the point is to determine
1816 whether any part of the type needs to be resolved before it can
1818 if (TYPE_DATA_LOCATION (type
) != NULL
1819 && (TYPE_DATA_LOCATION_KIND (type
) == PROP_LOCEXPR
1820 || TYPE_DATA_LOCATION_KIND (type
) == PROP_LOCLIST
))
1823 if (TYPE_ASSOCIATED_PROP (type
))
1826 if (TYPE_ALLOCATED_PROP (type
))
1829 switch (TYPE_CODE (type
))
1831 case TYPE_CODE_RANGE
:
1833 /* A range type is obviously dynamic if it has at least one
1834 dynamic bound. But also consider the range type to be
1835 dynamic when its subtype is dynamic, even if the bounds
1836 of the range type are static. It allows us to assume that
1837 the subtype of a static range type is also static. */
1838 return (!has_static_range (TYPE_RANGE_DATA (type
))
1839 || is_dynamic_type_internal (TYPE_TARGET_TYPE (type
), 0));
1842 case TYPE_CODE_ARRAY
:
1844 gdb_assert (TYPE_NFIELDS (type
) == 1);
1846 /* The array is dynamic if either the bounds are dynamic,
1847 or the elements it contains have a dynamic contents. */
1848 if (is_dynamic_type_internal (TYPE_INDEX_TYPE (type
), 0))
1850 return is_dynamic_type_internal (TYPE_TARGET_TYPE (type
), 0);
1853 case TYPE_CODE_STRUCT
:
1854 case TYPE_CODE_UNION
:
1858 for (i
= 0; i
< TYPE_NFIELDS (type
); ++i
)
1859 if (!field_is_static (&TYPE_FIELD (type
, i
))
1860 && is_dynamic_type_internal (TYPE_FIELD_TYPE (type
, i
), 0))
1869 /* See gdbtypes.h. */
1872 is_dynamic_type (struct type
*type
)
1874 return is_dynamic_type_internal (type
, 1);
1877 static struct type
*resolve_dynamic_type_internal
1878 (struct type
*type
, struct property_addr_info
*addr_stack
, int top_level
);
1880 /* Given a dynamic range type (dyn_range_type) and a stack of
1881 struct property_addr_info elements, return a static version
1884 static struct type
*
1885 resolve_dynamic_range (struct type
*dyn_range_type
,
1886 struct property_addr_info
*addr_stack
)
1889 struct type
*static_range_type
, *static_target_type
;
1890 const struct dynamic_prop
*prop
;
1891 struct dynamic_prop low_bound
, high_bound
;
1893 gdb_assert (TYPE_CODE (dyn_range_type
) == TYPE_CODE_RANGE
);
1895 prop
= &TYPE_RANGE_DATA (dyn_range_type
)->low
;
1896 if (dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
1898 low_bound
.kind
= PROP_CONST
;
1899 low_bound
.data
.const_val
= value
;
1903 low_bound
.kind
= PROP_UNDEFINED
;
1904 low_bound
.data
.const_val
= 0;
1907 prop
= &TYPE_RANGE_DATA (dyn_range_type
)->high
;
1908 if (dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
1910 high_bound
.kind
= PROP_CONST
;
1911 high_bound
.data
.const_val
= value
;
1913 if (TYPE_RANGE_DATA (dyn_range_type
)->flag_upper_bound_is_count
)
1914 high_bound
.data
.const_val
1915 = low_bound
.data
.const_val
+ high_bound
.data
.const_val
- 1;
1919 high_bound
.kind
= PROP_UNDEFINED
;
1920 high_bound
.data
.const_val
= 0;
1924 = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (dyn_range_type
),
1926 static_range_type
= create_range_type (copy_type (dyn_range_type
),
1928 &low_bound
, &high_bound
);
1929 TYPE_RANGE_DATA (static_range_type
)->flag_bound_evaluated
= 1;
1930 return static_range_type
;
1933 /* Resolves dynamic bound values of an array type TYPE to static ones.
1934 ADDR_STACK is a stack of struct property_addr_info to be used
1935 if needed during the dynamic resolution. */
1937 static struct type
*
1938 resolve_dynamic_array (struct type
*type
,
1939 struct property_addr_info
*addr_stack
)
1942 struct type
*elt_type
;
1943 struct type
*range_type
;
1944 struct type
*ary_dim
;
1945 struct dynamic_prop
*prop
;
1947 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_ARRAY
);
1949 type
= copy_type (type
);
1952 range_type
= check_typedef (TYPE_INDEX_TYPE (elt_type
));
1953 range_type
= resolve_dynamic_range (range_type
, addr_stack
);
1955 /* Resolve allocated/associated here before creating a new array type, which
1956 will update the length of the array accordingly. */
1957 prop
= TYPE_ALLOCATED_PROP (type
);
1958 if (prop
!= NULL
&& dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
1960 TYPE_DYN_PROP_ADDR (prop
) = value
;
1961 TYPE_DYN_PROP_KIND (prop
) = PROP_CONST
;
1963 prop
= TYPE_ASSOCIATED_PROP (type
);
1964 if (prop
!= NULL
&& dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
1966 TYPE_DYN_PROP_ADDR (prop
) = value
;
1967 TYPE_DYN_PROP_KIND (prop
) = PROP_CONST
;
1970 ary_dim
= check_typedef (TYPE_TARGET_TYPE (elt_type
));
1972 if (ary_dim
!= NULL
&& TYPE_CODE (ary_dim
) == TYPE_CODE_ARRAY
)
1973 elt_type
= resolve_dynamic_array (ary_dim
, addr_stack
);
1975 elt_type
= TYPE_TARGET_TYPE (type
);
1977 return create_array_type_with_stride (type
, elt_type
, range_type
,
1978 TYPE_FIELD_BITSIZE (type
, 0));
1981 /* Resolve dynamic bounds of members of the union TYPE to static
1982 bounds. ADDR_STACK is a stack of struct property_addr_info
1983 to be used if needed during the dynamic resolution. */
1985 static struct type
*
1986 resolve_dynamic_union (struct type
*type
,
1987 struct property_addr_info
*addr_stack
)
1989 struct type
*resolved_type
;
1991 unsigned int max_len
= 0;
1993 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_UNION
);
1995 resolved_type
= copy_type (type
);
1996 TYPE_FIELDS (resolved_type
)
1997 = (struct field
*) TYPE_ALLOC (resolved_type
,
1998 TYPE_NFIELDS (resolved_type
)
1999 * sizeof (struct field
));
2000 memcpy (TYPE_FIELDS (resolved_type
),
2002 TYPE_NFIELDS (resolved_type
) * sizeof (struct field
));
2003 for (i
= 0; i
< TYPE_NFIELDS (resolved_type
); ++i
)
2007 if (field_is_static (&TYPE_FIELD (type
, i
)))
2010 t
= resolve_dynamic_type_internal (TYPE_FIELD_TYPE (resolved_type
, i
),
2012 TYPE_FIELD_TYPE (resolved_type
, i
) = t
;
2013 if (TYPE_LENGTH (t
) > max_len
)
2014 max_len
= TYPE_LENGTH (t
);
2017 TYPE_LENGTH (resolved_type
) = max_len
;
2018 return resolved_type
;
2021 /* Resolve dynamic bounds of members of the struct TYPE to static
2022 bounds. ADDR_STACK is a stack of struct property_addr_info to
2023 be used if needed during the dynamic resolution. */
2025 static struct type
*
2026 resolve_dynamic_struct (struct type
*type
,
2027 struct property_addr_info
*addr_stack
)
2029 struct type
*resolved_type
;
2031 unsigned resolved_type_bit_length
= 0;
2033 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_STRUCT
);
2034 gdb_assert (TYPE_NFIELDS (type
) > 0);
2036 resolved_type
= copy_type (type
);
2037 TYPE_FIELDS (resolved_type
)
2038 = (struct field
*) TYPE_ALLOC (resolved_type
,
2039 TYPE_NFIELDS (resolved_type
)
2040 * sizeof (struct field
));
2041 memcpy (TYPE_FIELDS (resolved_type
),
2043 TYPE_NFIELDS (resolved_type
) * sizeof (struct field
));
2044 for (i
= 0; i
< TYPE_NFIELDS (resolved_type
); ++i
)
2046 unsigned new_bit_length
;
2047 struct property_addr_info pinfo
;
2049 if (field_is_static (&TYPE_FIELD (type
, i
)))
2052 /* As we know this field is not a static field, the field's
2053 field_loc_kind should be FIELD_LOC_KIND_BITPOS. Verify
2054 this is the case, but only trigger a simple error rather
2055 than an internal error if that fails. While failing
2056 that verification indicates a bug in our code, the error
2057 is not severe enough to suggest to the user he stops
2058 his debugging session because of it. */
2059 if (TYPE_FIELD_LOC_KIND (type
, i
) != FIELD_LOC_KIND_BITPOS
)
2060 error (_("Cannot determine struct field location"
2061 " (invalid location kind)"));
2063 pinfo
.type
= check_typedef (TYPE_FIELD_TYPE (type
, i
));
2064 pinfo
.valaddr
= addr_stack
->valaddr
;
2067 + (TYPE_FIELD_BITPOS (resolved_type
, i
) / TARGET_CHAR_BIT
));
2068 pinfo
.next
= addr_stack
;
2070 TYPE_FIELD_TYPE (resolved_type
, i
)
2071 = resolve_dynamic_type_internal (TYPE_FIELD_TYPE (resolved_type
, i
),
2073 gdb_assert (TYPE_FIELD_LOC_KIND (resolved_type
, i
)
2074 == FIELD_LOC_KIND_BITPOS
);
2076 new_bit_length
= TYPE_FIELD_BITPOS (resolved_type
, i
);
2077 if (TYPE_FIELD_BITSIZE (resolved_type
, i
) != 0)
2078 new_bit_length
+= TYPE_FIELD_BITSIZE (resolved_type
, i
);
2080 new_bit_length
+= (TYPE_LENGTH (TYPE_FIELD_TYPE (resolved_type
, i
))
2083 /* Normally, we would use the position and size of the last field
2084 to determine the size of the enclosing structure. But GCC seems
2085 to be encoding the position of some fields incorrectly when
2086 the struct contains a dynamic field that is not placed last.
2087 So we compute the struct size based on the field that has
2088 the highest position + size - probably the best we can do. */
2089 if (new_bit_length
> resolved_type_bit_length
)
2090 resolved_type_bit_length
= new_bit_length
;
2093 /* The length of a type won't change for fortran, but it does for C and Ada.
2094 For fortran the size of dynamic fields might change over time but not the
2095 type length of the structure. If we adapt it, we run into problems
2096 when calculating the element offset for arrays of structs. */
2097 if (current_language
->la_language
!= language_fortran
)
2098 TYPE_LENGTH (resolved_type
)
2099 = (resolved_type_bit_length
+ TARGET_CHAR_BIT
- 1) / TARGET_CHAR_BIT
;
2101 /* The Ada language uses this field as a cache for static fixed types: reset
2102 it as RESOLVED_TYPE must have its own static fixed type. */
2103 TYPE_TARGET_TYPE (resolved_type
) = NULL
;
2105 return resolved_type
;
2108 /* Worker for resolved_dynamic_type. */
2110 static struct type
*
2111 resolve_dynamic_type_internal (struct type
*type
,
2112 struct property_addr_info
*addr_stack
,
2115 struct type
*real_type
= check_typedef (type
);
2116 struct type
*resolved_type
= type
;
2117 struct dynamic_prop
*prop
;
2120 if (!is_dynamic_type_internal (real_type
, top_level
))
2123 if (TYPE_CODE (type
) == TYPE_CODE_TYPEDEF
)
2125 resolved_type
= copy_type (type
);
2126 TYPE_TARGET_TYPE (resolved_type
)
2127 = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (type
), addr_stack
,
2132 /* Before trying to resolve TYPE, make sure it is not a stub. */
2135 switch (TYPE_CODE (type
))
2139 struct property_addr_info pinfo
;
2141 pinfo
.type
= check_typedef (TYPE_TARGET_TYPE (type
));
2142 pinfo
.valaddr
= NULL
;
2143 if (addr_stack
->valaddr
!= NULL
)
2144 pinfo
.addr
= extract_typed_address (addr_stack
->valaddr
, type
);
2146 pinfo
.addr
= read_memory_typed_address (addr_stack
->addr
, type
);
2147 pinfo
.next
= addr_stack
;
2149 resolved_type
= copy_type (type
);
2150 TYPE_TARGET_TYPE (resolved_type
)
2151 = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (type
),
2156 case TYPE_CODE_ARRAY
:
2157 resolved_type
= resolve_dynamic_array (type
, addr_stack
);
2160 case TYPE_CODE_RANGE
:
2161 resolved_type
= resolve_dynamic_range (type
, addr_stack
);
2164 case TYPE_CODE_UNION
:
2165 resolved_type
= resolve_dynamic_union (type
, addr_stack
);
2168 case TYPE_CODE_STRUCT
:
2169 resolved_type
= resolve_dynamic_struct (type
, addr_stack
);
2174 /* Resolve data_location attribute. */
2175 prop
= TYPE_DATA_LOCATION (resolved_type
);
2177 && dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2179 TYPE_DYN_PROP_ADDR (prop
) = value
;
2180 TYPE_DYN_PROP_KIND (prop
) = PROP_CONST
;
2183 return resolved_type
;
2186 /* See gdbtypes.h */
2189 resolve_dynamic_type (struct type
*type
, const gdb_byte
*valaddr
,
2192 struct property_addr_info pinfo
2193 = {check_typedef (type
), valaddr
, addr
, NULL
};
2195 return resolve_dynamic_type_internal (type
, &pinfo
, 1);
2198 /* See gdbtypes.h */
2200 struct dynamic_prop
*
2201 get_dyn_prop (enum dynamic_prop_node_kind prop_kind
, const struct type
*type
)
2203 struct dynamic_prop_list
*node
= TYPE_DYN_PROP_LIST (type
);
2205 while (node
!= NULL
)
2207 if (node
->prop_kind
== prop_kind
)
2214 /* See gdbtypes.h */
2217 add_dyn_prop (enum dynamic_prop_node_kind prop_kind
, struct dynamic_prop prop
,
2218 struct type
*type
, struct objfile
*objfile
)
2220 struct dynamic_prop_list
*temp
;
2222 gdb_assert (TYPE_OBJFILE_OWNED (type
));
2224 temp
= XOBNEW (&objfile
->objfile_obstack
, struct dynamic_prop_list
);
2225 temp
->prop_kind
= prop_kind
;
2227 temp
->next
= TYPE_DYN_PROP_LIST (type
);
2229 TYPE_DYN_PROP_LIST (type
) = temp
;
2232 /* Remove dynamic property from TYPE in case it exists. */
2235 remove_dyn_prop (enum dynamic_prop_node_kind prop_kind
,
2238 struct dynamic_prop_list
*prev_node
, *curr_node
;
2240 curr_node
= TYPE_DYN_PROP_LIST (type
);
2243 while (NULL
!= curr_node
)
2245 if (curr_node
->prop_kind
== prop_kind
)
2247 /* Update the linked list but don't free anything.
2248 The property was allocated on objstack and it is not known
2249 if we are on top of it. Nevertheless, everything is released
2250 when the complete objstack is freed. */
2251 if (NULL
== prev_node
)
2252 TYPE_DYN_PROP_LIST (type
) = curr_node
->next
;
2254 prev_node
->next
= curr_node
->next
;
2259 prev_node
= curr_node
;
2260 curr_node
= curr_node
->next
;
2264 /* Find the real type of TYPE. This function returns the real type,
2265 after removing all layers of typedefs, and completing opaque or stub
2266 types. Completion changes the TYPE argument, but stripping of
2269 Instance flags (e.g. const/volatile) are preserved as typedefs are
2270 stripped. If necessary a new qualified form of the underlying type
2273 NOTE: This will return a typedef if TYPE_TARGET_TYPE for the typedef has
2274 not been computed and we're either in the middle of reading symbols, or
2275 there was no name for the typedef in the debug info.
2277 NOTE: Lookup of opaque types can throw errors for invalid symbol files.
2278 QUITs in the symbol reading code can also throw.
2279 Thus this function can throw an exception.
2281 If TYPE is a TYPE_CODE_TYPEDEF, its length is updated to the length of
2284 If this is a stubbed struct (i.e. declared as struct foo *), see if
2285 we can find a full definition in some other file. If so, copy this
2286 definition, so we can use it in future. There used to be a comment
2287 (but not any code) that if we don't find a full definition, we'd
2288 set a flag so we don't spend time in the future checking the same
2289 type. That would be a mistake, though--we might load in more
2290 symbols which contain a full definition for the type. */
2293 check_typedef (struct type
*type
)
2295 struct type
*orig_type
= type
;
2296 /* While we're removing typedefs, we don't want to lose qualifiers.
2297 E.g., const/volatile. */
2298 int instance_flags
= TYPE_INSTANCE_FLAGS (type
);
2302 while (TYPE_CODE (type
) == TYPE_CODE_TYPEDEF
)
2304 if (!TYPE_TARGET_TYPE (type
))
2309 /* It is dangerous to call lookup_symbol if we are currently
2310 reading a symtab. Infinite recursion is one danger. */
2311 if (currently_reading_symtab
)
2312 return make_qualified_type (type
, instance_flags
, NULL
);
2314 name
= type_name_no_tag (type
);
2315 /* FIXME: shouldn't we separately check the TYPE_NAME and
2316 the TYPE_TAG_NAME, and look in STRUCT_DOMAIN and/or
2317 VAR_DOMAIN as appropriate? (this code was written before
2318 TYPE_NAME and TYPE_TAG_NAME were separate). */
2321 stub_noname_complaint ();
2322 return make_qualified_type (type
, instance_flags
, NULL
);
2324 sym
= lookup_symbol (name
, 0, STRUCT_DOMAIN
, 0).symbol
;
2326 TYPE_TARGET_TYPE (type
) = SYMBOL_TYPE (sym
);
2327 else /* TYPE_CODE_UNDEF */
2328 TYPE_TARGET_TYPE (type
) = alloc_type_arch (get_type_arch (type
));
2330 type
= TYPE_TARGET_TYPE (type
);
2332 /* Preserve the instance flags as we traverse down the typedef chain.
2334 Handling address spaces/classes is nasty, what do we do if there's a
2336 E.g., what if an outer typedef marks the type as class_1 and an inner
2337 typedef marks the type as class_2?
2338 This is the wrong place to do such error checking. We leave it to
2339 the code that created the typedef in the first place to flag the
2340 error. We just pick the outer address space (akin to letting the
2341 outer cast in a chain of casting win), instead of assuming
2342 "it can't happen". */
2344 const int ALL_SPACES
= (TYPE_INSTANCE_FLAG_CODE_SPACE
2345 | TYPE_INSTANCE_FLAG_DATA_SPACE
);
2346 const int ALL_CLASSES
= TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL
;
2347 int new_instance_flags
= TYPE_INSTANCE_FLAGS (type
);
2349 /* Treat code vs data spaces and address classes separately. */
2350 if ((instance_flags
& ALL_SPACES
) != 0)
2351 new_instance_flags
&= ~ALL_SPACES
;
2352 if ((instance_flags
& ALL_CLASSES
) != 0)
2353 new_instance_flags
&= ~ALL_CLASSES
;
2355 instance_flags
|= new_instance_flags
;
2359 /* If this is a struct/class/union with no fields, then check
2360 whether a full definition exists somewhere else. This is for
2361 systems where a type definition with no fields is issued for such
2362 types, instead of identifying them as stub types in the first
2365 if (TYPE_IS_OPAQUE (type
)
2366 && opaque_type_resolution
2367 && !currently_reading_symtab
)
2369 const char *name
= type_name_no_tag (type
);
2370 struct type
*newtype
;
2374 stub_noname_complaint ();
2375 return make_qualified_type (type
, instance_flags
, NULL
);
2377 newtype
= lookup_transparent_type (name
);
2381 /* If the resolved type and the stub are in the same
2382 objfile, then replace the stub type with the real deal.
2383 But if they're in separate objfiles, leave the stub
2384 alone; we'll just look up the transparent type every time
2385 we call check_typedef. We can't create pointers between
2386 types allocated to different objfiles, since they may
2387 have different lifetimes. Trying to copy NEWTYPE over to
2388 TYPE's objfile is pointless, too, since you'll have to
2389 move over any other types NEWTYPE refers to, which could
2390 be an unbounded amount of stuff. */
2391 if (TYPE_OBJFILE (newtype
) == TYPE_OBJFILE (type
))
2392 type
= make_qualified_type (newtype
,
2393 TYPE_INSTANCE_FLAGS (type
),
2399 /* Otherwise, rely on the stub flag being set for opaque/stubbed
2401 else if (TYPE_STUB (type
) && !currently_reading_symtab
)
2403 const char *name
= type_name_no_tag (type
);
2404 /* FIXME: shouldn't we separately check the TYPE_NAME and the
2405 TYPE_TAG_NAME, and look in STRUCT_DOMAIN and/or VAR_DOMAIN
2406 as appropriate? (this code was written before TYPE_NAME and
2407 TYPE_TAG_NAME were separate). */
2412 stub_noname_complaint ();
2413 return make_qualified_type (type
, instance_flags
, NULL
);
2415 sym
= lookup_symbol (name
, 0, STRUCT_DOMAIN
, 0).symbol
;
2418 /* Same as above for opaque types, we can replace the stub
2419 with the complete type only if they are in the same
2421 if (TYPE_OBJFILE (SYMBOL_TYPE(sym
)) == TYPE_OBJFILE (type
))
2422 type
= make_qualified_type (SYMBOL_TYPE (sym
),
2423 TYPE_INSTANCE_FLAGS (type
),
2426 type
= SYMBOL_TYPE (sym
);
2430 if (TYPE_TARGET_STUB (type
))
2432 struct type
*target_type
= check_typedef (TYPE_TARGET_TYPE (type
));
2434 if (TYPE_STUB (target_type
) || TYPE_TARGET_STUB (target_type
))
2436 /* Nothing we can do. */
2438 else if (TYPE_CODE (type
) == TYPE_CODE_RANGE
)
2440 TYPE_LENGTH (type
) = TYPE_LENGTH (target_type
);
2441 TYPE_TARGET_STUB (type
) = 0;
2445 type
= make_qualified_type (type
, instance_flags
, NULL
);
2447 /* Cache TYPE_LENGTH for future use. */
2448 TYPE_LENGTH (orig_type
) = TYPE_LENGTH (type
);
2453 /* Parse a type expression in the string [P..P+LENGTH). If an error
2454 occurs, silently return a void type. */
2456 static struct type
*
2457 safe_parse_type (struct gdbarch
*gdbarch
, char *p
, int length
)
2459 struct ui_file
*saved_gdb_stderr
;
2460 struct type
*type
= NULL
; /* Initialize to keep gcc happy. */
2462 /* Suppress error messages. */
2463 saved_gdb_stderr
= gdb_stderr
;
2464 gdb_stderr
= ui_file_new ();
2466 /* Call parse_and_eval_type() without fear of longjmp()s. */
2469 type
= parse_and_eval_type (p
, length
);
2471 CATCH (except
, RETURN_MASK_ERROR
)
2473 type
= builtin_type (gdbarch
)->builtin_void
;
2477 /* Stop suppressing error messages. */
2478 ui_file_delete (gdb_stderr
);
2479 gdb_stderr
= saved_gdb_stderr
;
2484 /* Ugly hack to convert method stubs into method types.
2486 He ain't kiddin'. This demangles the name of the method into a
2487 string including argument types, parses out each argument type,
2488 generates a string casting a zero to that type, evaluates the
2489 string, and stuffs the resulting type into an argtype vector!!!
2490 Then it knows the type of the whole function (including argument
2491 types for overloading), which info used to be in the stab's but was
2492 removed to hack back the space required for them. */
2495 check_stub_method (struct type
*type
, int method_id
, int signature_id
)
2497 struct gdbarch
*gdbarch
= get_type_arch (type
);
2499 char *mangled_name
= gdb_mangle_name (type
, method_id
, signature_id
);
2500 char *demangled_name
= gdb_demangle (mangled_name
,
2501 DMGL_PARAMS
| DMGL_ANSI
);
2502 char *argtypetext
, *p
;
2503 int depth
= 0, argcount
= 1;
2504 struct field
*argtypes
;
2507 /* Make sure we got back a function string that we can use. */
2509 p
= strchr (demangled_name
, '(');
2513 if (demangled_name
== NULL
|| p
== NULL
)
2514 error (_("Internal: Cannot demangle mangled name `%s'."),
2517 /* Now, read in the parameters that define this type. */
2522 if (*p
== '(' || *p
== '<')
2526 else if (*p
== ')' || *p
== '>')
2530 else if (*p
== ',' && depth
== 0)
2538 /* If we read one argument and it was ``void'', don't count it. */
2539 if (startswith (argtypetext
, "(void)"))
2542 /* We need one extra slot, for the THIS pointer. */
2544 argtypes
= (struct field
*)
2545 TYPE_ALLOC (type
, (argcount
+ 1) * sizeof (struct field
));
2548 /* Add THIS pointer for non-static methods. */
2549 f
= TYPE_FN_FIELDLIST1 (type
, method_id
);
2550 if (TYPE_FN_FIELD_STATIC_P (f
, signature_id
))
2554 argtypes
[0].type
= lookup_pointer_type (type
);
2558 if (*p
!= ')') /* () means no args, skip while. */
2563 if (depth
<= 0 && (*p
== ',' || *p
== ')'))
2565 /* Avoid parsing of ellipsis, they will be handled below.
2566 Also avoid ``void'' as above. */
2567 if (strncmp (argtypetext
, "...", p
- argtypetext
) != 0
2568 && strncmp (argtypetext
, "void", p
- argtypetext
) != 0)
2570 argtypes
[argcount
].type
=
2571 safe_parse_type (gdbarch
, argtypetext
, p
- argtypetext
);
2574 argtypetext
= p
+ 1;
2577 if (*p
== '(' || *p
== '<')
2581 else if (*p
== ')' || *p
== '>')
2590 TYPE_FN_FIELD_PHYSNAME (f
, signature_id
) = mangled_name
;
2592 /* Now update the old "stub" type into a real type. */
2593 mtype
= TYPE_FN_FIELD_TYPE (f
, signature_id
);
2594 /* MTYPE may currently be a function (TYPE_CODE_FUNC).
2595 We want a method (TYPE_CODE_METHOD). */
2596 smash_to_method_type (mtype
, type
, TYPE_TARGET_TYPE (mtype
),
2597 argtypes
, argcount
, p
[-2] == '.');
2598 TYPE_STUB (mtype
) = 0;
2599 TYPE_FN_FIELD_STUB (f
, signature_id
) = 0;
2601 xfree (demangled_name
);
2604 /* This is the external interface to check_stub_method, above. This
2605 function unstubs all of the signatures for TYPE's METHOD_ID method
2606 name. After calling this function TYPE_FN_FIELD_STUB will be
2607 cleared for each signature and TYPE_FN_FIELDLIST_NAME will be
2610 This function unfortunately can not die until stabs do. */
2613 check_stub_method_group (struct type
*type
, int method_id
)
2615 int len
= TYPE_FN_FIELDLIST_LENGTH (type
, method_id
);
2616 struct fn_field
*f
= TYPE_FN_FIELDLIST1 (type
, method_id
);
2617 int j
, found_stub
= 0;
2619 for (j
= 0; j
< len
; j
++)
2620 if (TYPE_FN_FIELD_STUB (f
, j
))
2623 check_stub_method (type
, method_id
, j
);
2626 /* GNU v3 methods with incorrect names were corrected when we read
2627 in type information, because it was cheaper to do it then. The
2628 only GNU v2 methods with incorrect method names are operators and
2629 destructors; destructors were also corrected when we read in type
2632 Therefore the only thing we need to handle here are v2 operator
2634 if (found_stub
&& !startswith (TYPE_FN_FIELD_PHYSNAME (f
, 0), "_Z"))
2637 char dem_opname
[256];
2639 ret
= cplus_demangle_opname (TYPE_FN_FIELDLIST_NAME (type
,
2641 dem_opname
, DMGL_ANSI
);
2643 ret
= cplus_demangle_opname (TYPE_FN_FIELDLIST_NAME (type
,
2647 TYPE_FN_FIELDLIST_NAME (type
, method_id
) = xstrdup (dem_opname
);
2651 /* Ensure it is in .rodata (if available) by workarounding GCC PR 44690. */
2652 const struct cplus_struct_type cplus_struct_default
= { };
2655 allocate_cplus_struct_type (struct type
*type
)
2657 if (HAVE_CPLUS_STRUCT (type
))
2658 /* Structure was already allocated. Nothing more to do. */
2661 TYPE_SPECIFIC_FIELD (type
) = TYPE_SPECIFIC_CPLUS_STUFF
;
2662 TYPE_RAW_CPLUS_SPECIFIC (type
) = (struct cplus_struct_type
*)
2663 TYPE_ALLOC (type
, sizeof (struct cplus_struct_type
));
2664 *(TYPE_RAW_CPLUS_SPECIFIC (type
)) = cplus_struct_default
;
2665 set_type_vptr_fieldno (type
, -1);
2668 const struct gnat_aux_type gnat_aux_default
=
2671 /* Set the TYPE's type-specific kind to TYPE_SPECIFIC_GNAT_STUFF,
2672 and allocate the associated gnat-specific data. The gnat-specific
2673 data is also initialized to gnat_aux_default. */
2676 allocate_gnat_aux_type (struct type
*type
)
2678 TYPE_SPECIFIC_FIELD (type
) = TYPE_SPECIFIC_GNAT_STUFF
;
2679 TYPE_GNAT_SPECIFIC (type
) = (struct gnat_aux_type
*)
2680 TYPE_ALLOC (type
, sizeof (struct gnat_aux_type
));
2681 *(TYPE_GNAT_SPECIFIC (type
)) = gnat_aux_default
;
2684 /* Helper function to initialize a newly allocated type. Set type code
2685 to CODE and initialize the type-specific fields accordingly. */
2688 set_type_code (struct type
*type
, enum type_code code
)
2690 TYPE_CODE (type
) = code
;
2694 case TYPE_CODE_STRUCT
:
2695 case TYPE_CODE_UNION
:
2696 case TYPE_CODE_NAMESPACE
:
2697 INIT_CPLUS_SPECIFIC (type
);
2700 TYPE_SPECIFIC_FIELD (type
) = TYPE_SPECIFIC_FLOATFORMAT
;
2702 case TYPE_CODE_FUNC
:
2703 INIT_FUNC_SPECIFIC (type
);
2708 /* Helper function to verify floating-point format and size.
2709 BIT is the type size in bits; if BIT equals -1, the size is
2710 determined by the floatformat. Returns size to be used. */
2713 verify_floatformat (int bit
, const struct floatformat
**floatformats
)
2715 gdb_assert (floatformats
!= NULL
);
2716 gdb_assert (floatformats
[0] != NULL
&& floatformats
[1] != NULL
);
2719 bit
= floatformats
[0]->totalsize
;
2720 gdb_assert (bit
>= 0);
2722 size_t len
= bit
/ TARGET_CHAR_BIT
;
2723 gdb_assert (len
>= floatformat_totalsize_bytes (floatformats
[0]));
2724 gdb_assert (len
>= floatformat_totalsize_bytes (floatformats
[1]));
2729 /* Helper function to initialize the standard scalar types.
2731 If NAME is non-NULL, then it is used to initialize the type name.
2732 Note that NAME is not copied; it is required to have a lifetime at
2733 least as long as OBJFILE. */
2736 init_type (struct objfile
*objfile
, enum type_code code
, int length
,
2741 type
= alloc_type (objfile
);
2742 set_type_code (type
, code
);
2743 TYPE_LENGTH (type
) = length
;
2744 TYPE_NAME (type
) = name
;
2749 /* Allocate a TYPE_CODE_INT type structure associated with OBJFILE.
2750 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
2751 the type's TYPE_UNSIGNED flag. NAME is the type name. */
2754 init_integer_type (struct objfile
*objfile
,
2755 int bit
, int unsigned_p
, const char *name
)
2759 t
= init_type (objfile
, TYPE_CODE_INT
, bit
/ TARGET_CHAR_BIT
, name
);
2761 TYPE_UNSIGNED (t
) = 1;
2766 /* Allocate a TYPE_CODE_CHAR type structure associated with OBJFILE.
2767 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
2768 the type's TYPE_UNSIGNED flag. NAME is the type name. */
2771 init_character_type (struct objfile
*objfile
,
2772 int bit
, int unsigned_p
, const char *name
)
2776 t
= init_type (objfile
, TYPE_CODE_CHAR
, bit
/ TARGET_CHAR_BIT
, name
);
2778 TYPE_UNSIGNED (t
) = 1;
2783 /* Allocate a TYPE_CODE_BOOL type structure associated with OBJFILE.
2784 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
2785 the type's TYPE_UNSIGNED flag. NAME is the type name. */
2788 init_boolean_type (struct objfile
*objfile
,
2789 int bit
, int unsigned_p
, const char *name
)
2793 t
= init_type (objfile
, TYPE_CODE_BOOL
, bit
/ TARGET_CHAR_BIT
, name
);
2795 TYPE_UNSIGNED (t
) = 1;
2800 /* Allocate a TYPE_CODE_FLT type structure associated with OBJFILE.
2801 BIT is the type size in bits; if BIT equals -1, the size is
2802 determined by the floatformat. NAME is the type name. Set the
2803 TYPE_FLOATFORMAT from FLOATFORMATS. */
2806 init_float_type (struct objfile
*objfile
,
2807 int bit
, const char *name
,
2808 const struct floatformat
**floatformats
)
2812 bit
= verify_floatformat (bit
, floatformats
);
2813 t
= init_type (objfile
, TYPE_CODE_FLT
, bit
/ TARGET_CHAR_BIT
, name
);
2814 TYPE_FLOATFORMAT (t
) = floatformats
;
2819 /* Allocate a TYPE_CODE_DECFLOAT type structure associated with OBJFILE.
2820 BIT is the type size in bits. NAME is the type name. */
2823 init_decfloat_type (struct objfile
*objfile
, int bit
, const char *name
)
2827 t
= init_type (objfile
, TYPE_CODE_DECFLOAT
, bit
/ TARGET_CHAR_BIT
, name
);
2831 /* Allocate a TYPE_CODE_COMPLEX type structure associated with OBJFILE.
2832 NAME is the type name. TARGET_TYPE is the component float type. */
2835 init_complex_type (struct objfile
*objfile
,
2836 const char *name
, struct type
*target_type
)
2840 t
= init_type (objfile
, TYPE_CODE_COMPLEX
,
2841 2 * TYPE_LENGTH (target_type
), name
);
2842 TYPE_TARGET_TYPE (t
) = target_type
;
2846 /* Allocate a TYPE_CODE_PTR type structure associated with OBJFILE.
2847 BIT is the pointer type size in bits. NAME is the type name.
2848 TARGET_TYPE is the pointer target type. Always sets the pointer type's
2849 TYPE_UNSIGNED flag. */
2852 init_pointer_type (struct objfile
*objfile
,
2853 int bit
, const char *name
, struct type
*target_type
)
2857 t
= init_type (objfile
, TYPE_CODE_PTR
, bit
/ TARGET_CHAR_BIT
, name
);
2858 TYPE_TARGET_TYPE (t
) = target_type
;
2859 TYPE_UNSIGNED (t
) = 1;
2864 /* Queries on types. */
2867 can_dereference (struct type
*t
)
2869 /* FIXME: Should we return true for references as well as
2871 t
= check_typedef (t
);
2874 && TYPE_CODE (t
) == TYPE_CODE_PTR
2875 && TYPE_CODE (TYPE_TARGET_TYPE (t
)) != TYPE_CODE_VOID
);
2879 is_integral_type (struct type
*t
)
2881 t
= check_typedef (t
);
2884 && ((TYPE_CODE (t
) == TYPE_CODE_INT
)
2885 || (TYPE_CODE (t
) == TYPE_CODE_ENUM
)
2886 || (TYPE_CODE (t
) == TYPE_CODE_FLAGS
)
2887 || (TYPE_CODE (t
) == TYPE_CODE_CHAR
)
2888 || (TYPE_CODE (t
) == TYPE_CODE_RANGE
)
2889 || (TYPE_CODE (t
) == TYPE_CODE_BOOL
)));
2892 /* Return true if TYPE is scalar. */
2895 is_scalar_type (struct type
*type
)
2897 type
= check_typedef (type
);
2899 switch (TYPE_CODE (type
))
2901 case TYPE_CODE_ARRAY
:
2902 case TYPE_CODE_STRUCT
:
2903 case TYPE_CODE_UNION
:
2905 case TYPE_CODE_STRING
:
2912 /* Return true if T is scalar, or a composite type which in practice has
2913 the memory layout of a scalar type. E.g., an array or struct with only
2914 one scalar element inside it, or a union with only scalar elements. */
2917 is_scalar_type_recursive (struct type
*t
)
2919 t
= check_typedef (t
);
2921 if (is_scalar_type (t
))
2923 /* Are we dealing with an array or string of known dimensions? */
2924 else if ((TYPE_CODE (t
) == TYPE_CODE_ARRAY
2925 || TYPE_CODE (t
) == TYPE_CODE_STRING
) && TYPE_NFIELDS (t
) == 1
2926 && TYPE_CODE (TYPE_INDEX_TYPE (t
)) == TYPE_CODE_RANGE
)
2928 LONGEST low_bound
, high_bound
;
2929 struct type
*elt_type
= check_typedef (TYPE_TARGET_TYPE (t
));
2931 get_discrete_bounds (TYPE_INDEX_TYPE (t
), &low_bound
, &high_bound
);
2933 return high_bound
== low_bound
&& is_scalar_type_recursive (elt_type
);
2935 /* Are we dealing with a struct with one element? */
2936 else if (TYPE_CODE (t
) == TYPE_CODE_STRUCT
&& TYPE_NFIELDS (t
) == 1)
2937 return is_scalar_type_recursive (TYPE_FIELD_TYPE (t
, 0));
2938 else if (TYPE_CODE (t
) == TYPE_CODE_UNION
)
2940 int i
, n
= TYPE_NFIELDS (t
);
2942 /* If all elements of the union are scalar, then the union is scalar. */
2943 for (i
= 0; i
< n
; i
++)
2944 if (!is_scalar_type_recursive (TYPE_FIELD_TYPE (t
, i
)))
2953 /* Return true is T is a class or a union. False otherwise. */
2956 class_or_union_p (const struct type
*t
)
2958 return (TYPE_CODE (t
) == TYPE_CODE_STRUCT
2959 || TYPE_CODE (t
) == TYPE_CODE_UNION
);
2962 /* A helper function which returns true if types A and B represent the
2963 "same" class type. This is true if the types have the same main
2964 type, or the same name. */
2967 class_types_same_p (const struct type
*a
, const struct type
*b
)
2969 return (TYPE_MAIN_TYPE (a
) == TYPE_MAIN_TYPE (b
)
2970 || (TYPE_NAME (a
) && TYPE_NAME (b
)
2971 && !strcmp (TYPE_NAME (a
), TYPE_NAME (b
))));
2974 /* If BASE is an ancestor of DCLASS return the distance between them.
2975 otherwise return -1;
2979 class B: public A {};
2980 class C: public B {};
2983 distance_to_ancestor (A, A, 0) = 0
2984 distance_to_ancestor (A, B, 0) = 1
2985 distance_to_ancestor (A, C, 0) = 2
2986 distance_to_ancestor (A, D, 0) = 3
2988 If PUBLIC is 1 then only public ancestors are considered,
2989 and the function returns the distance only if BASE is a public ancestor
2993 distance_to_ancestor (A, D, 1) = -1. */
2996 distance_to_ancestor (struct type
*base
, struct type
*dclass
, int is_public
)
3001 base
= check_typedef (base
);
3002 dclass
= check_typedef (dclass
);
3004 if (class_types_same_p (base
, dclass
))
3007 for (i
= 0; i
< TYPE_N_BASECLASSES (dclass
); i
++)
3009 if (is_public
&& ! BASETYPE_VIA_PUBLIC (dclass
, i
))
3012 d
= distance_to_ancestor (base
, TYPE_BASECLASS (dclass
, i
), is_public
);
3020 /* Check whether BASE is an ancestor or base class or DCLASS
3021 Return 1 if so, and 0 if not.
3022 Note: If BASE and DCLASS are of the same type, this function
3023 will return 1. So for some class A, is_ancestor (A, A) will
3027 is_ancestor (struct type
*base
, struct type
*dclass
)
3029 return distance_to_ancestor (base
, dclass
, 0) >= 0;
3032 /* Like is_ancestor, but only returns true when BASE is a public
3033 ancestor of DCLASS. */
3036 is_public_ancestor (struct type
*base
, struct type
*dclass
)
3038 return distance_to_ancestor (base
, dclass
, 1) >= 0;
3041 /* A helper function for is_unique_ancestor. */
3044 is_unique_ancestor_worker (struct type
*base
, struct type
*dclass
,
3046 const gdb_byte
*valaddr
, int embedded_offset
,
3047 CORE_ADDR address
, struct value
*val
)
3051 base
= check_typedef (base
);
3052 dclass
= check_typedef (dclass
);
3054 for (i
= 0; i
< TYPE_N_BASECLASSES (dclass
) && count
< 2; ++i
)
3059 iter
= check_typedef (TYPE_BASECLASS (dclass
, i
));
3061 this_offset
= baseclass_offset (dclass
, i
, valaddr
, embedded_offset
,
3064 if (class_types_same_p (base
, iter
))
3066 /* If this is the first subclass, set *OFFSET and set count
3067 to 1. Otherwise, if this is at the same offset as
3068 previous instances, do nothing. Otherwise, increment
3072 *offset
= this_offset
;
3075 else if (this_offset
== *offset
)
3083 count
+= is_unique_ancestor_worker (base
, iter
, offset
,
3085 embedded_offset
+ this_offset
,
3092 /* Like is_ancestor, but only returns true if BASE is a unique base
3093 class of the type of VAL. */
3096 is_unique_ancestor (struct type
*base
, struct value
*val
)
3100 return is_unique_ancestor_worker (base
, value_type (val
), &offset
,
3101 value_contents_for_printing (val
),
3102 value_embedded_offset (val
),
3103 value_address (val
), val
) == 1;
3107 /* Overload resolution. */
3109 /* Return the sum of the rank of A with the rank of B. */
3112 sum_ranks (struct rank a
, struct rank b
)
3115 c
.rank
= a
.rank
+ b
.rank
;
3116 c
.subrank
= a
.subrank
+ b
.subrank
;
3120 /* Compare rank A and B and return:
3122 1 if a is better than b
3123 -1 if b is better than a. */
3126 compare_ranks (struct rank a
, struct rank b
)
3128 if (a
.rank
== b
.rank
)
3130 if (a
.subrank
== b
.subrank
)
3132 if (a
.subrank
< b
.subrank
)
3134 if (a
.subrank
> b
.subrank
)
3138 if (a
.rank
< b
.rank
)
3141 /* a.rank > b.rank */
3145 /* Functions for overload resolution begin here. */
3147 /* Compare two badness vectors A and B and return the result.
3148 0 => A and B are identical
3149 1 => A and B are incomparable
3150 2 => A is better than B
3151 3 => A is worse than B */
3154 compare_badness (struct badness_vector
*a
, struct badness_vector
*b
)
3158 short found_pos
= 0; /* any positives in c? */
3159 short found_neg
= 0; /* any negatives in c? */
3161 /* differing lengths => incomparable */
3162 if (a
->length
!= b
->length
)
3165 /* Subtract b from a */
3166 for (i
= 0; i
< a
->length
; i
++)
3168 tmp
= compare_ranks (b
->rank
[i
], a
->rank
[i
]);
3178 return 1; /* incomparable */
3180 return 3; /* A > B */
3186 return 2; /* A < B */
3188 return 0; /* A == B */
3192 /* Rank a function by comparing its parameter types (PARMS, length
3193 NPARMS), to the types of an argument list (ARGS, length NARGS).
3194 Return a pointer to a badness vector. This has NARGS + 1
3197 struct badness_vector
*
3198 rank_function (struct type
**parms
, int nparms
,
3199 struct value
**args
, int nargs
)
3202 struct badness_vector
*bv
= XNEW (struct badness_vector
);
3203 int min_len
= nparms
< nargs
? nparms
: nargs
;
3205 bv
->length
= nargs
+ 1; /* add 1 for the length-match rank. */
3206 bv
->rank
= XNEWVEC (struct rank
, nargs
+ 1);
3208 /* First compare the lengths of the supplied lists.
3209 If there is a mismatch, set it to a high value. */
3211 /* pai/1997-06-03 FIXME: when we have debug info about default
3212 arguments and ellipsis parameter lists, we should consider those
3213 and rank the length-match more finely. */
3215 LENGTH_MATCH (bv
) = (nargs
!= nparms
)
3216 ? LENGTH_MISMATCH_BADNESS
3217 : EXACT_MATCH_BADNESS
;
3219 /* Now rank all the parameters of the candidate function. */
3220 for (i
= 1; i
<= min_len
; i
++)
3221 bv
->rank
[i
] = rank_one_type (parms
[i
- 1], value_type (args
[i
- 1]),
3224 /* If more arguments than parameters, add dummy entries. */
3225 for (i
= min_len
+ 1; i
<= nargs
; i
++)
3226 bv
->rank
[i
] = TOO_FEW_PARAMS_BADNESS
;
3231 /* Compare the names of two integer types, assuming that any sign
3232 qualifiers have been checked already. We do it this way because
3233 there may be an "int" in the name of one of the types. */
3236 integer_types_same_name_p (const char *first
, const char *second
)
3238 int first_p
, second_p
;
3240 /* If both are shorts, return 1; if neither is a short, keep
3242 first_p
= (strstr (first
, "short") != NULL
);
3243 second_p
= (strstr (second
, "short") != NULL
);
3244 if (first_p
&& second_p
)
3246 if (first_p
|| second_p
)
3249 /* Likewise for long. */
3250 first_p
= (strstr (first
, "long") != NULL
);
3251 second_p
= (strstr (second
, "long") != NULL
);
3252 if (first_p
&& second_p
)
3254 if (first_p
|| second_p
)
3257 /* Likewise for char. */
3258 first_p
= (strstr (first
, "char") != NULL
);
3259 second_p
= (strstr (second
, "char") != NULL
);
3260 if (first_p
&& second_p
)
3262 if (first_p
|| second_p
)
3265 /* They must both be ints. */
3269 /* Compares type A to type B returns 1 if the represent the same type
3273 types_equal (struct type
*a
, struct type
*b
)
3275 /* Identical type pointers. */
3276 /* However, this still doesn't catch all cases of same type for b
3277 and a. The reason is that builtin types are different from
3278 the same ones constructed from the object. */
3282 /* Resolve typedefs */
3283 if (TYPE_CODE (a
) == TYPE_CODE_TYPEDEF
)
3284 a
= check_typedef (a
);
3285 if (TYPE_CODE (b
) == TYPE_CODE_TYPEDEF
)
3286 b
= check_typedef (b
);
3288 /* If after resolving typedefs a and b are not of the same type
3289 code then they are not equal. */
3290 if (TYPE_CODE (a
) != TYPE_CODE (b
))
3293 /* If a and b are both pointers types or both reference types then
3294 they are equal of the same type iff the objects they refer to are
3295 of the same type. */
3296 if (TYPE_CODE (a
) == TYPE_CODE_PTR
3297 || TYPE_CODE (a
) == TYPE_CODE_REF
)
3298 return types_equal (TYPE_TARGET_TYPE (a
),
3299 TYPE_TARGET_TYPE (b
));
3301 /* Well, damnit, if the names are exactly the same, I'll say they
3302 are exactly the same. This happens when we generate method
3303 stubs. The types won't point to the same address, but they
3304 really are the same. */
3306 if (TYPE_NAME (a
) && TYPE_NAME (b
)
3307 && strcmp (TYPE_NAME (a
), TYPE_NAME (b
)) == 0)
3310 /* Check if identical after resolving typedefs. */
3314 /* Two function types are equal if their argument and return types
3316 if (TYPE_CODE (a
) == TYPE_CODE_FUNC
)
3320 if (TYPE_NFIELDS (a
) != TYPE_NFIELDS (b
))
3323 if (!types_equal (TYPE_TARGET_TYPE (a
), TYPE_TARGET_TYPE (b
)))
3326 for (i
= 0; i
< TYPE_NFIELDS (a
); ++i
)
3327 if (!types_equal (TYPE_FIELD_TYPE (a
, i
), TYPE_FIELD_TYPE (b
, i
)))
3336 /* Deep comparison of types. */
3338 /* An entry in the type-equality bcache. */
3340 typedef struct type_equality_entry
3342 struct type
*type1
, *type2
;
3343 } type_equality_entry_d
;
3345 DEF_VEC_O (type_equality_entry_d
);
3347 /* A helper function to compare two strings. Returns 1 if they are
3348 the same, 0 otherwise. Handles NULLs properly. */
3351 compare_maybe_null_strings (const char *s
, const char *t
)
3353 if (s
== NULL
&& t
!= NULL
)
3355 else if (s
!= NULL
&& t
== NULL
)
3357 else if (s
== NULL
&& t
== NULL
)
3359 return strcmp (s
, t
) == 0;
3362 /* A helper function for check_types_worklist that checks two types for
3363 "deep" equality. Returns non-zero if the types are considered the
3364 same, zero otherwise. */
3367 check_types_equal (struct type
*type1
, struct type
*type2
,
3368 VEC (type_equality_entry_d
) **worklist
)
3370 type1
= check_typedef (type1
);
3371 type2
= check_typedef (type2
);
3376 if (TYPE_CODE (type1
) != TYPE_CODE (type2
)
3377 || TYPE_LENGTH (type1
) != TYPE_LENGTH (type2
)
3378 || TYPE_UNSIGNED (type1
) != TYPE_UNSIGNED (type2
)
3379 || TYPE_NOSIGN (type1
) != TYPE_NOSIGN (type2
)
3380 || TYPE_VARARGS (type1
) != TYPE_VARARGS (type2
)
3381 || TYPE_VECTOR (type1
) != TYPE_VECTOR (type2
)
3382 || TYPE_NOTTEXT (type1
) != TYPE_NOTTEXT (type2
)
3383 || TYPE_INSTANCE_FLAGS (type1
) != TYPE_INSTANCE_FLAGS (type2
)
3384 || TYPE_NFIELDS (type1
) != TYPE_NFIELDS (type2
))
3387 if (!compare_maybe_null_strings (TYPE_TAG_NAME (type1
),
3388 TYPE_TAG_NAME (type2
)))
3390 if (!compare_maybe_null_strings (TYPE_NAME (type1
), TYPE_NAME (type2
)))
3393 if (TYPE_CODE (type1
) == TYPE_CODE_RANGE
)
3395 if (memcmp (TYPE_RANGE_DATA (type1
), TYPE_RANGE_DATA (type2
),
3396 sizeof (*TYPE_RANGE_DATA (type1
))) != 0)
3403 for (i
= 0; i
< TYPE_NFIELDS (type1
); ++i
)
3405 const struct field
*field1
= &TYPE_FIELD (type1
, i
);
3406 const struct field
*field2
= &TYPE_FIELD (type2
, i
);
3407 struct type_equality_entry entry
;
3409 if (FIELD_ARTIFICIAL (*field1
) != FIELD_ARTIFICIAL (*field2
)
3410 || FIELD_BITSIZE (*field1
) != FIELD_BITSIZE (*field2
)
3411 || FIELD_LOC_KIND (*field1
) != FIELD_LOC_KIND (*field2
))
3413 if (!compare_maybe_null_strings (FIELD_NAME (*field1
),
3414 FIELD_NAME (*field2
)))
3416 switch (FIELD_LOC_KIND (*field1
))
3418 case FIELD_LOC_KIND_BITPOS
:
3419 if (FIELD_BITPOS (*field1
) != FIELD_BITPOS (*field2
))
3422 case FIELD_LOC_KIND_ENUMVAL
:
3423 if (FIELD_ENUMVAL (*field1
) != FIELD_ENUMVAL (*field2
))
3426 case FIELD_LOC_KIND_PHYSADDR
:
3427 if (FIELD_STATIC_PHYSADDR (*field1
)
3428 != FIELD_STATIC_PHYSADDR (*field2
))
3431 case FIELD_LOC_KIND_PHYSNAME
:
3432 if (!compare_maybe_null_strings (FIELD_STATIC_PHYSNAME (*field1
),
3433 FIELD_STATIC_PHYSNAME (*field2
)))
3436 case FIELD_LOC_KIND_DWARF_BLOCK
:
3438 struct dwarf2_locexpr_baton
*block1
, *block2
;
3440 block1
= FIELD_DWARF_BLOCK (*field1
);
3441 block2
= FIELD_DWARF_BLOCK (*field2
);
3442 if (block1
->per_cu
!= block2
->per_cu
3443 || block1
->size
!= block2
->size
3444 || memcmp (block1
->data
, block2
->data
, block1
->size
) != 0)
3449 internal_error (__FILE__
, __LINE__
, _("Unsupported field kind "
3450 "%d by check_types_equal"),
3451 FIELD_LOC_KIND (*field1
));
3454 entry
.type1
= FIELD_TYPE (*field1
);
3455 entry
.type2
= FIELD_TYPE (*field2
);
3456 VEC_safe_push (type_equality_entry_d
, *worklist
, &entry
);
3460 if (TYPE_TARGET_TYPE (type1
) != NULL
)
3462 struct type_equality_entry entry
;
3464 if (TYPE_TARGET_TYPE (type2
) == NULL
)
3467 entry
.type1
= TYPE_TARGET_TYPE (type1
);
3468 entry
.type2
= TYPE_TARGET_TYPE (type2
);
3469 VEC_safe_push (type_equality_entry_d
, *worklist
, &entry
);
3471 else if (TYPE_TARGET_TYPE (type2
) != NULL
)
3477 /* Check types on a worklist for equality. Returns zero if any pair
3478 is not equal, non-zero if they are all considered equal. */
3481 check_types_worklist (VEC (type_equality_entry_d
) **worklist
,
3482 struct bcache
*cache
)
3484 while (!VEC_empty (type_equality_entry_d
, *worklist
))
3486 struct type_equality_entry entry
;
3489 entry
= *VEC_last (type_equality_entry_d
, *worklist
);
3490 VEC_pop (type_equality_entry_d
, *worklist
);
3492 /* If the type pair has already been visited, we know it is
3494 bcache_full (&entry
, sizeof (entry
), cache
, &added
);
3498 if (check_types_equal (entry
.type1
, entry
.type2
, worklist
) == 0)
3505 /* Return non-zero if types TYPE1 and TYPE2 are equal, as determined by a
3506 "deep comparison". Otherwise return zero. */
3509 types_deeply_equal (struct type
*type1
, struct type
*type2
)
3511 struct gdb_exception except
= exception_none
;
3513 struct bcache
*cache
;
3514 VEC (type_equality_entry_d
) *worklist
= NULL
;
3515 struct type_equality_entry entry
;
3517 gdb_assert (type1
!= NULL
&& type2
!= NULL
);
3519 /* Early exit for the simple case. */
3523 cache
= bcache_xmalloc (NULL
, NULL
);
3525 entry
.type1
= type1
;
3526 entry
.type2
= type2
;
3527 VEC_safe_push (type_equality_entry_d
, worklist
, &entry
);
3529 /* check_types_worklist calls several nested helper functions, some
3530 of which can raise a GDB exception, so we just check and rethrow
3531 here. If there is a GDB exception, a comparison is not capable
3532 (or trusted), so exit. */
3535 result
= check_types_worklist (&worklist
, cache
);
3537 CATCH (ex
, RETURN_MASK_ALL
)
3543 bcache_xfree (cache
);
3544 VEC_free (type_equality_entry_d
, worklist
);
3546 /* Rethrow if there was a problem. */
3547 if (except
.reason
< 0)
3548 throw_exception (except
);
3553 /* Allocated status of type TYPE. Return zero if type TYPE is allocated.
3554 Otherwise return one. */
3557 type_not_allocated (const struct type
*type
)
3559 struct dynamic_prop
*prop
= TYPE_ALLOCATED_PROP (type
);
3561 return (prop
&& TYPE_DYN_PROP_KIND (prop
) == PROP_CONST
3562 && !TYPE_DYN_PROP_ADDR (prop
));
3565 /* Associated status of type TYPE. Return zero if type TYPE is associated.
3566 Otherwise return one. */
3569 type_not_associated (const struct type
*type
)
3571 struct dynamic_prop
*prop
= TYPE_ASSOCIATED_PROP (type
);
3573 return (prop
&& TYPE_DYN_PROP_KIND (prop
) == PROP_CONST
3574 && !TYPE_DYN_PROP_ADDR (prop
));
3577 /* Compare one type (PARM) for compatibility with another (ARG).
3578 * PARM is intended to be the parameter type of a function; and
3579 * ARG is the supplied argument's type. This function tests if
3580 * the latter can be converted to the former.
3581 * VALUE is the argument's value or NULL if none (or called recursively)
3583 * Return 0 if they are identical types;
3584 * Otherwise, return an integer which corresponds to how compatible
3585 * PARM is to ARG. The higher the return value, the worse the match.
3586 * Generally the "bad" conversions are all uniformly assigned a 100. */
3589 rank_one_type (struct type
*parm
, struct type
*arg
, struct value
*value
)
3591 struct rank rank
= {0,0};
3593 if (types_equal (parm
, arg
))
3594 return EXACT_MATCH_BADNESS
;
3596 /* Resolve typedefs */
3597 if (TYPE_CODE (parm
) == TYPE_CODE_TYPEDEF
)
3598 parm
= check_typedef (parm
);
3599 if (TYPE_CODE (arg
) == TYPE_CODE_TYPEDEF
)
3600 arg
= check_typedef (arg
);
3602 /* See through references, since we can almost make non-references
3604 if (TYPE_CODE (arg
) == TYPE_CODE_REF
)
3605 return (sum_ranks (rank_one_type (parm
, TYPE_TARGET_TYPE (arg
), NULL
),
3606 REFERENCE_CONVERSION_BADNESS
));
3607 if (TYPE_CODE (parm
) == TYPE_CODE_REF
)
3608 return (sum_ranks (rank_one_type (TYPE_TARGET_TYPE (parm
), arg
, NULL
),
3609 REFERENCE_CONVERSION_BADNESS
));
3611 /* Debugging only. */
3612 fprintf_filtered (gdb_stderr
,
3613 "------ Arg is %s [%d], parm is %s [%d]\n",
3614 TYPE_NAME (arg
), TYPE_CODE (arg
),
3615 TYPE_NAME (parm
), TYPE_CODE (parm
));
3617 /* x -> y means arg of type x being supplied for parameter of type y. */
3619 switch (TYPE_CODE (parm
))
3622 switch (TYPE_CODE (arg
))
3626 /* Allowed pointer conversions are:
3627 (a) pointer to void-pointer conversion. */
3628 if (TYPE_CODE (TYPE_TARGET_TYPE (parm
)) == TYPE_CODE_VOID
)
3629 return VOID_PTR_CONVERSION_BADNESS
;
3631 /* (b) pointer to ancestor-pointer conversion. */
3632 rank
.subrank
= distance_to_ancestor (TYPE_TARGET_TYPE (parm
),
3633 TYPE_TARGET_TYPE (arg
),
3635 if (rank
.subrank
>= 0)
3636 return sum_ranks (BASE_PTR_CONVERSION_BADNESS
, rank
);
3638 return INCOMPATIBLE_TYPE_BADNESS
;
3639 case TYPE_CODE_ARRAY
:
3640 if (types_equal (TYPE_TARGET_TYPE (parm
),
3641 TYPE_TARGET_TYPE (arg
)))
3642 return EXACT_MATCH_BADNESS
;
3643 return INCOMPATIBLE_TYPE_BADNESS
;
3644 case TYPE_CODE_FUNC
:
3645 return rank_one_type (TYPE_TARGET_TYPE (parm
), arg
, NULL
);
3647 if (value
!= NULL
&& TYPE_CODE (value_type (value
)) == TYPE_CODE_INT
)
3649 if (value_as_long (value
) == 0)
3651 /* Null pointer conversion: allow it to be cast to a pointer.
3652 [4.10.1 of C++ standard draft n3290] */
3653 return NULL_POINTER_CONVERSION_BADNESS
;
3657 /* If type checking is disabled, allow the conversion. */
3658 if (!strict_type_checking
)
3659 return NS_INTEGER_POINTER_CONVERSION_BADNESS
;
3663 case TYPE_CODE_ENUM
:
3664 case TYPE_CODE_FLAGS
:
3665 case TYPE_CODE_CHAR
:
3666 case TYPE_CODE_RANGE
:
3667 case TYPE_CODE_BOOL
:
3669 return INCOMPATIBLE_TYPE_BADNESS
;
3671 case TYPE_CODE_ARRAY
:
3672 switch (TYPE_CODE (arg
))
3675 case TYPE_CODE_ARRAY
:
3676 return rank_one_type (TYPE_TARGET_TYPE (parm
),
3677 TYPE_TARGET_TYPE (arg
), NULL
);
3679 return INCOMPATIBLE_TYPE_BADNESS
;
3681 case TYPE_CODE_FUNC
:
3682 switch (TYPE_CODE (arg
))
3684 case TYPE_CODE_PTR
: /* funcptr -> func */
3685 return rank_one_type (parm
, TYPE_TARGET_TYPE (arg
), NULL
);
3687 return INCOMPATIBLE_TYPE_BADNESS
;
3690 switch (TYPE_CODE (arg
))
3693 if (TYPE_LENGTH (arg
) == TYPE_LENGTH (parm
))
3695 /* Deal with signed, unsigned, and plain chars and
3696 signed and unsigned ints. */
3697 if (TYPE_NOSIGN (parm
))
3699 /* This case only for character types. */
3700 if (TYPE_NOSIGN (arg
))
3701 return EXACT_MATCH_BADNESS
; /* plain char -> plain char */
3702 else /* signed/unsigned char -> plain char */
3703 return INTEGER_CONVERSION_BADNESS
;
3705 else if (TYPE_UNSIGNED (parm
))
3707 if (TYPE_UNSIGNED (arg
))
3709 /* unsigned int -> unsigned int, or
3710 unsigned long -> unsigned long */
3711 if (integer_types_same_name_p (TYPE_NAME (parm
),
3713 return EXACT_MATCH_BADNESS
;
3714 else if (integer_types_same_name_p (TYPE_NAME (arg
),
3716 && integer_types_same_name_p (TYPE_NAME (parm
),
3718 /* unsigned int -> unsigned long */
3719 return INTEGER_PROMOTION_BADNESS
;
3721 /* unsigned long -> unsigned int */
3722 return INTEGER_CONVERSION_BADNESS
;
3726 if (integer_types_same_name_p (TYPE_NAME (arg
),
3728 && integer_types_same_name_p (TYPE_NAME (parm
),
3730 /* signed long -> unsigned int */
3731 return INTEGER_CONVERSION_BADNESS
;
3733 /* signed int/long -> unsigned int/long */
3734 return INTEGER_CONVERSION_BADNESS
;
3737 else if (!TYPE_NOSIGN (arg
) && !TYPE_UNSIGNED (arg
))
3739 if (integer_types_same_name_p (TYPE_NAME (parm
),
3741 return EXACT_MATCH_BADNESS
;
3742 else if (integer_types_same_name_p (TYPE_NAME (arg
),
3744 && integer_types_same_name_p (TYPE_NAME (parm
),
3746 return INTEGER_PROMOTION_BADNESS
;
3748 return INTEGER_CONVERSION_BADNESS
;
3751 return INTEGER_CONVERSION_BADNESS
;
3753 else if (TYPE_LENGTH (arg
) < TYPE_LENGTH (parm
))
3754 return INTEGER_PROMOTION_BADNESS
;
3756 return INTEGER_CONVERSION_BADNESS
;
3757 case TYPE_CODE_ENUM
:
3758 case TYPE_CODE_FLAGS
:
3759 case TYPE_CODE_CHAR
:
3760 case TYPE_CODE_RANGE
:
3761 case TYPE_CODE_BOOL
:
3762 if (TYPE_DECLARED_CLASS (arg
))
3763 return INCOMPATIBLE_TYPE_BADNESS
;
3764 return INTEGER_PROMOTION_BADNESS
;
3766 return INT_FLOAT_CONVERSION_BADNESS
;
3768 return NS_POINTER_CONVERSION_BADNESS
;
3770 return INCOMPATIBLE_TYPE_BADNESS
;
3773 case TYPE_CODE_ENUM
:
3774 switch (TYPE_CODE (arg
))
3777 case TYPE_CODE_CHAR
:
3778 case TYPE_CODE_RANGE
:
3779 case TYPE_CODE_BOOL
:
3780 case TYPE_CODE_ENUM
:
3781 if (TYPE_DECLARED_CLASS (parm
) || TYPE_DECLARED_CLASS (arg
))
3782 return INCOMPATIBLE_TYPE_BADNESS
;
3783 return INTEGER_CONVERSION_BADNESS
;
3785 return INT_FLOAT_CONVERSION_BADNESS
;
3787 return INCOMPATIBLE_TYPE_BADNESS
;
3790 case TYPE_CODE_CHAR
:
3791 switch (TYPE_CODE (arg
))
3793 case TYPE_CODE_RANGE
:
3794 case TYPE_CODE_BOOL
:
3795 case TYPE_CODE_ENUM
:
3796 if (TYPE_DECLARED_CLASS (arg
))
3797 return INCOMPATIBLE_TYPE_BADNESS
;
3798 return INTEGER_CONVERSION_BADNESS
;
3800 return INT_FLOAT_CONVERSION_BADNESS
;
3802 if (TYPE_LENGTH (arg
) > TYPE_LENGTH (parm
))
3803 return INTEGER_CONVERSION_BADNESS
;
3804 else if (TYPE_LENGTH (arg
) < TYPE_LENGTH (parm
))
3805 return INTEGER_PROMOTION_BADNESS
;
3806 /* >>> !! else fall through !! <<< */
3807 case TYPE_CODE_CHAR
:
3808 /* Deal with signed, unsigned, and plain chars for C++ and
3809 with int cases falling through from previous case. */
3810 if (TYPE_NOSIGN (parm
))
3812 if (TYPE_NOSIGN (arg
))
3813 return EXACT_MATCH_BADNESS
;
3815 return INTEGER_CONVERSION_BADNESS
;
3817 else if (TYPE_UNSIGNED (parm
))
3819 if (TYPE_UNSIGNED (arg
))
3820 return EXACT_MATCH_BADNESS
;
3822 return INTEGER_PROMOTION_BADNESS
;
3824 else if (!TYPE_NOSIGN (arg
) && !TYPE_UNSIGNED (arg
))
3825 return EXACT_MATCH_BADNESS
;
3827 return INTEGER_CONVERSION_BADNESS
;
3829 return INCOMPATIBLE_TYPE_BADNESS
;
3832 case TYPE_CODE_RANGE
:
3833 switch (TYPE_CODE (arg
))
3836 case TYPE_CODE_CHAR
:
3837 case TYPE_CODE_RANGE
:
3838 case TYPE_CODE_BOOL
:
3839 case TYPE_CODE_ENUM
:
3840 return INTEGER_CONVERSION_BADNESS
;
3842 return INT_FLOAT_CONVERSION_BADNESS
;
3844 return INCOMPATIBLE_TYPE_BADNESS
;
3847 case TYPE_CODE_BOOL
:
3848 switch (TYPE_CODE (arg
))
3850 /* n3290 draft, section 4.12.1 (conv.bool):
3852 "A prvalue of arithmetic, unscoped enumeration, pointer, or
3853 pointer to member type can be converted to a prvalue of type
3854 bool. A zero value, null pointer value, or null member pointer
3855 value is converted to false; any other value is converted to
3856 true. A prvalue of type std::nullptr_t can be converted to a
3857 prvalue of type bool; the resulting value is false." */
3859 case TYPE_CODE_CHAR
:
3860 case TYPE_CODE_ENUM
:
3862 case TYPE_CODE_MEMBERPTR
:
3864 return BOOL_CONVERSION_BADNESS
;
3865 case TYPE_CODE_RANGE
:
3866 return INCOMPATIBLE_TYPE_BADNESS
;
3867 case TYPE_CODE_BOOL
:
3868 return EXACT_MATCH_BADNESS
;
3870 return INCOMPATIBLE_TYPE_BADNESS
;
3874 switch (TYPE_CODE (arg
))
3877 if (TYPE_LENGTH (arg
) < TYPE_LENGTH (parm
))
3878 return FLOAT_PROMOTION_BADNESS
;
3879 else if (TYPE_LENGTH (arg
) == TYPE_LENGTH (parm
))
3880 return EXACT_MATCH_BADNESS
;
3882 return FLOAT_CONVERSION_BADNESS
;
3884 case TYPE_CODE_BOOL
:
3885 case TYPE_CODE_ENUM
:
3886 case TYPE_CODE_RANGE
:
3887 case TYPE_CODE_CHAR
:
3888 return INT_FLOAT_CONVERSION_BADNESS
;
3890 return INCOMPATIBLE_TYPE_BADNESS
;
3893 case TYPE_CODE_COMPLEX
:
3894 switch (TYPE_CODE (arg
))
3895 { /* Strictly not needed for C++, but... */
3897 return FLOAT_PROMOTION_BADNESS
;
3898 case TYPE_CODE_COMPLEX
:
3899 return EXACT_MATCH_BADNESS
;
3901 return INCOMPATIBLE_TYPE_BADNESS
;
3904 case TYPE_CODE_STRUCT
:
3905 switch (TYPE_CODE (arg
))
3907 case TYPE_CODE_STRUCT
:
3908 /* Check for derivation */
3909 rank
.subrank
= distance_to_ancestor (parm
, arg
, 0);
3910 if (rank
.subrank
>= 0)
3911 return sum_ranks (BASE_CONVERSION_BADNESS
, rank
);
3912 /* else fall through */
3914 return INCOMPATIBLE_TYPE_BADNESS
;
3917 case TYPE_CODE_UNION
:
3918 switch (TYPE_CODE (arg
))
3920 case TYPE_CODE_UNION
:
3922 return INCOMPATIBLE_TYPE_BADNESS
;
3925 case TYPE_CODE_MEMBERPTR
:
3926 switch (TYPE_CODE (arg
))
3929 return INCOMPATIBLE_TYPE_BADNESS
;
3932 case TYPE_CODE_METHOD
:
3933 switch (TYPE_CODE (arg
))
3937 return INCOMPATIBLE_TYPE_BADNESS
;
3941 switch (TYPE_CODE (arg
))
3945 return INCOMPATIBLE_TYPE_BADNESS
;
3950 switch (TYPE_CODE (arg
))
3954 return rank_one_type (TYPE_FIELD_TYPE (parm
, 0),
3955 TYPE_FIELD_TYPE (arg
, 0), NULL
);
3957 return INCOMPATIBLE_TYPE_BADNESS
;
3960 case TYPE_CODE_VOID
:
3962 return INCOMPATIBLE_TYPE_BADNESS
;
3963 } /* switch (TYPE_CODE (arg)) */
3966 /* End of functions for overload resolution. */
3968 /* Routines to pretty-print types. */
3971 print_bit_vector (B_TYPE
*bits
, int nbits
)
3975 for (bitno
= 0; bitno
< nbits
; bitno
++)
3977 if ((bitno
% 8) == 0)
3979 puts_filtered (" ");
3981 if (B_TST (bits
, bitno
))
3982 printf_filtered (("1"));
3984 printf_filtered (("0"));
3988 /* Note the first arg should be the "this" pointer, we may not want to
3989 include it since we may get into a infinitely recursive
3993 print_args (struct field
*args
, int nargs
, int spaces
)
3999 for (i
= 0; i
< nargs
; i
++)
4001 printfi_filtered (spaces
, "[%d] name '%s'\n", i
,
4002 args
[i
].name
!= NULL
? args
[i
].name
: "<NULL>");
4003 recursive_dump_type (args
[i
].type
, spaces
+ 2);
4009 field_is_static (struct field
*f
)
4011 /* "static" fields are the fields whose location is not relative
4012 to the address of the enclosing struct. It would be nice to
4013 have a dedicated flag that would be set for static fields when
4014 the type is being created. But in practice, checking the field
4015 loc_kind should give us an accurate answer. */
4016 return (FIELD_LOC_KIND (*f
) == FIELD_LOC_KIND_PHYSNAME
4017 || FIELD_LOC_KIND (*f
) == FIELD_LOC_KIND_PHYSADDR
);
4021 dump_fn_fieldlists (struct type
*type
, int spaces
)
4027 printfi_filtered (spaces
, "fn_fieldlists ");
4028 gdb_print_host_address (TYPE_FN_FIELDLISTS (type
), gdb_stdout
);
4029 printf_filtered ("\n");
4030 for (method_idx
= 0; method_idx
< TYPE_NFN_FIELDS (type
); method_idx
++)
4032 f
= TYPE_FN_FIELDLIST1 (type
, method_idx
);
4033 printfi_filtered (spaces
+ 2, "[%d] name '%s' (",
4035 TYPE_FN_FIELDLIST_NAME (type
, method_idx
));
4036 gdb_print_host_address (TYPE_FN_FIELDLIST_NAME (type
, method_idx
),
4038 printf_filtered (_(") length %d\n"),
4039 TYPE_FN_FIELDLIST_LENGTH (type
, method_idx
));
4040 for (overload_idx
= 0;
4041 overload_idx
< TYPE_FN_FIELDLIST_LENGTH (type
, method_idx
);
4044 printfi_filtered (spaces
+ 4, "[%d] physname '%s' (",
4046 TYPE_FN_FIELD_PHYSNAME (f
, overload_idx
));
4047 gdb_print_host_address (TYPE_FN_FIELD_PHYSNAME (f
, overload_idx
),
4049 printf_filtered (")\n");
4050 printfi_filtered (spaces
+ 8, "type ");
4051 gdb_print_host_address (TYPE_FN_FIELD_TYPE (f
, overload_idx
),
4053 printf_filtered ("\n");
4055 recursive_dump_type (TYPE_FN_FIELD_TYPE (f
, overload_idx
),
4058 printfi_filtered (spaces
+ 8, "args ");
4059 gdb_print_host_address (TYPE_FN_FIELD_ARGS (f
, overload_idx
),
4061 printf_filtered ("\n");
4062 print_args (TYPE_FN_FIELD_ARGS (f
, overload_idx
),
4063 TYPE_NFIELDS (TYPE_FN_FIELD_TYPE (f
, overload_idx
)),
4065 printfi_filtered (spaces
+ 8, "fcontext ");
4066 gdb_print_host_address (TYPE_FN_FIELD_FCONTEXT (f
, overload_idx
),
4068 printf_filtered ("\n");
4070 printfi_filtered (spaces
+ 8, "is_const %d\n",
4071 TYPE_FN_FIELD_CONST (f
, overload_idx
));
4072 printfi_filtered (spaces
+ 8, "is_volatile %d\n",
4073 TYPE_FN_FIELD_VOLATILE (f
, overload_idx
));
4074 printfi_filtered (spaces
+ 8, "is_private %d\n",
4075 TYPE_FN_FIELD_PRIVATE (f
, overload_idx
));
4076 printfi_filtered (spaces
+ 8, "is_protected %d\n",
4077 TYPE_FN_FIELD_PROTECTED (f
, overload_idx
));
4078 printfi_filtered (spaces
+ 8, "is_stub %d\n",
4079 TYPE_FN_FIELD_STUB (f
, overload_idx
));
4080 printfi_filtered (spaces
+ 8, "voffset %u\n",
4081 TYPE_FN_FIELD_VOFFSET (f
, overload_idx
));
4087 print_cplus_stuff (struct type
*type
, int spaces
)
4089 printfi_filtered (spaces
, "vptr_fieldno %d\n", TYPE_VPTR_FIELDNO (type
));
4090 printfi_filtered (spaces
, "vptr_basetype ");
4091 gdb_print_host_address (TYPE_VPTR_BASETYPE (type
), gdb_stdout
);
4092 puts_filtered ("\n");
4093 if (TYPE_VPTR_BASETYPE (type
) != NULL
)
4094 recursive_dump_type (TYPE_VPTR_BASETYPE (type
), spaces
+ 2);
4096 printfi_filtered (spaces
, "n_baseclasses %d\n",
4097 TYPE_N_BASECLASSES (type
));
4098 printfi_filtered (spaces
, "nfn_fields %d\n",
4099 TYPE_NFN_FIELDS (type
));
4100 if (TYPE_N_BASECLASSES (type
) > 0)
4102 printfi_filtered (spaces
, "virtual_field_bits (%d bits at *",
4103 TYPE_N_BASECLASSES (type
));
4104 gdb_print_host_address (TYPE_FIELD_VIRTUAL_BITS (type
),
4106 printf_filtered (")");
4108 print_bit_vector (TYPE_FIELD_VIRTUAL_BITS (type
),
4109 TYPE_N_BASECLASSES (type
));
4110 puts_filtered ("\n");
4112 if (TYPE_NFIELDS (type
) > 0)
4114 if (TYPE_FIELD_PRIVATE_BITS (type
) != NULL
)
4116 printfi_filtered (spaces
,
4117 "private_field_bits (%d bits at *",
4118 TYPE_NFIELDS (type
));
4119 gdb_print_host_address (TYPE_FIELD_PRIVATE_BITS (type
),
4121 printf_filtered (")");
4122 print_bit_vector (TYPE_FIELD_PRIVATE_BITS (type
),
4123 TYPE_NFIELDS (type
));
4124 puts_filtered ("\n");
4126 if (TYPE_FIELD_PROTECTED_BITS (type
) != NULL
)
4128 printfi_filtered (spaces
,
4129 "protected_field_bits (%d bits at *",
4130 TYPE_NFIELDS (type
));
4131 gdb_print_host_address (TYPE_FIELD_PROTECTED_BITS (type
),
4133 printf_filtered (")");
4134 print_bit_vector (TYPE_FIELD_PROTECTED_BITS (type
),
4135 TYPE_NFIELDS (type
));
4136 puts_filtered ("\n");
4139 if (TYPE_NFN_FIELDS (type
) > 0)
4141 dump_fn_fieldlists (type
, spaces
);
4145 /* Print the contents of the TYPE's type_specific union, assuming that
4146 its type-specific kind is TYPE_SPECIFIC_GNAT_STUFF. */
4149 print_gnat_stuff (struct type
*type
, int spaces
)
4151 struct type
*descriptive_type
= TYPE_DESCRIPTIVE_TYPE (type
);
4153 if (descriptive_type
== NULL
)
4154 printfi_filtered (spaces
+ 2, "no descriptive type\n");
4157 printfi_filtered (spaces
+ 2, "descriptive type\n");
4158 recursive_dump_type (descriptive_type
, spaces
+ 4);
4162 static struct obstack dont_print_type_obstack
;
4165 recursive_dump_type (struct type
*type
, int spaces
)
4170 obstack_begin (&dont_print_type_obstack
, 0);
4172 if (TYPE_NFIELDS (type
) > 0
4173 || (HAVE_CPLUS_STRUCT (type
) && TYPE_NFN_FIELDS (type
) > 0))
4175 struct type
**first_dont_print
4176 = (struct type
**) obstack_base (&dont_print_type_obstack
);
4178 int i
= (struct type
**)
4179 obstack_next_free (&dont_print_type_obstack
) - first_dont_print
;
4183 if (type
== first_dont_print
[i
])
4185 printfi_filtered (spaces
, "type node ");
4186 gdb_print_host_address (type
, gdb_stdout
);
4187 printf_filtered (_(" <same as already seen type>\n"));
4192 obstack_ptr_grow (&dont_print_type_obstack
, type
);
4195 printfi_filtered (spaces
, "type node ");
4196 gdb_print_host_address (type
, gdb_stdout
);
4197 printf_filtered ("\n");
4198 printfi_filtered (spaces
, "name '%s' (",
4199 TYPE_NAME (type
) ? TYPE_NAME (type
) : "<NULL>");
4200 gdb_print_host_address (TYPE_NAME (type
), gdb_stdout
);
4201 printf_filtered (")\n");
4202 printfi_filtered (spaces
, "tagname '%s' (",
4203 TYPE_TAG_NAME (type
) ? TYPE_TAG_NAME (type
) : "<NULL>");
4204 gdb_print_host_address (TYPE_TAG_NAME (type
), gdb_stdout
);
4205 printf_filtered (")\n");
4206 printfi_filtered (spaces
, "code 0x%x ", TYPE_CODE (type
));
4207 switch (TYPE_CODE (type
))
4209 case TYPE_CODE_UNDEF
:
4210 printf_filtered ("(TYPE_CODE_UNDEF)");
4213 printf_filtered ("(TYPE_CODE_PTR)");
4215 case TYPE_CODE_ARRAY
:
4216 printf_filtered ("(TYPE_CODE_ARRAY)");
4218 case TYPE_CODE_STRUCT
:
4219 printf_filtered ("(TYPE_CODE_STRUCT)");
4221 case TYPE_CODE_UNION
:
4222 printf_filtered ("(TYPE_CODE_UNION)");
4224 case TYPE_CODE_ENUM
:
4225 printf_filtered ("(TYPE_CODE_ENUM)");
4227 case TYPE_CODE_FLAGS
:
4228 printf_filtered ("(TYPE_CODE_FLAGS)");
4230 case TYPE_CODE_FUNC
:
4231 printf_filtered ("(TYPE_CODE_FUNC)");
4234 printf_filtered ("(TYPE_CODE_INT)");
4237 printf_filtered ("(TYPE_CODE_FLT)");
4239 case TYPE_CODE_VOID
:
4240 printf_filtered ("(TYPE_CODE_VOID)");
4243 printf_filtered ("(TYPE_CODE_SET)");
4245 case TYPE_CODE_RANGE
:
4246 printf_filtered ("(TYPE_CODE_RANGE)");
4248 case TYPE_CODE_STRING
:
4249 printf_filtered ("(TYPE_CODE_STRING)");
4251 case TYPE_CODE_ERROR
:
4252 printf_filtered ("(TYPE_CODE_ERROR)");
4254 case TYPE_CODE_MEMBERPTR
:
4255 printf_filtered ("(TYPE_CODE_MEMBERPTR)");
4257 case TYPE_CODE_METHODPTR
:
4258 printf_filtered ("(TYPE_CODE_METHODPTR)");
4260 case TYPE_CODE_METHOD
:
4261 printf_filtered ("(TYPE_CODE_METHOD)");
4264 printf_filtered ("(TYPE_CODE_REF)");
4266 case TYPE_CODE_CHAR
:
4267 printf_filtered ("(TYPE_CODE_CHAR)");
4269 case TYPE_CODE_BOOL
:
4270 printf_filtered ("(TYPE_CODE_BOOL)");
4272 case TYPE_CODE_COMPLEX
:
4273 printf_filtered ("(TYPE_CODE_COMPLEX)");
4275 case TYPE_CODE_TYPEDEF
:
4276 printf_filtered ("(TYPE_CODE_TYPEDEF)");
4278 case TYPE_CODE_NAMESPACE
:
4279 printf_filtered ("(TYPE_CODE_NAMESPACE)");
4282 printf_filtered ("(UNKNOWN TYPE CODE)");
4285 puts_filtered ("\n");
4286 printfi_filtered (spaces
, "length %d\n", TYPE_LENGTH (type
));
4287 if (TYPE_OBJFILE_OWNED (type
))
4289 printfi_filtered (spaces
, "objfile ");
4290 gdb_print_host_address (TYPE_OWNER (type
).objfile
, gdb_stdout
);
4294 printfi_filtered (spaces
, "gdbarch ");
4295 gdb_print_host_address (TYPE_OWNER (type
).gdbarch
, gdb_stdout
);
4297 printf_filtered ("\n");
4298 printfi_filtered (spaces
, "target_type ");
4299 gdb_print_host_address (TYPE_TARGET_TYPE (type
), gdb_stdout
);
4300 printf_filtered ("\n");
4301 if (TYPE_TARGET_TYPE (type
) != NULL
)
4303 recursive_dump_type (TYPE_TARGET_TYPE (type
), spaces
+ 2);
4305 printfi_filtered (spaces
, "pointer_type ");
4306 gdb_print_host_address (TYPE_POINTER_TYPE (type
), gdb_stdout
);
4307 printf_filtered ("\n");
4308 printfi_filtered (spaces
, "reference_type ");
4309 gdb_print_host_address (TYPE_REFERENCE_TYPE (type
), gdb_stdout
);
4310 printf_filtered ("\n");
4311 printfi_filtered (spaces
, "type_chain ");
4312 gdb_print_host_address (TYPE_CHAIN (type
), gdb_stdout
);
4313 printf_filtered ("\n");
4314 printfi_filtered (spaces
, "instance_flags 0x%x",
4315 TYPE_INSTANCE_FLAGS (type
));
4316 if (TYPE_CONST (type
))
4318 puts_filtered (" TYPE_CONST");
4320 if (TYPE_VOLATILE (type
))
4322 puts_filtered (" TYPE_VOLATILE");
4324 if (TYPE_CODE_SPACE (type
))
4326 puts_filtered (" TYPE_CODE_SPACE");
4328 if (TYPE_DATA_SPACE (type
))
4330 puts_filtered (" TYPE_DATA_SPACE");
4332 if (TYPE_ADDRESS_CLASS_1 (type
))
4334 puts_filtered (" TYPE_ADDRESS_CLASS_1");
4336 if (TYPE_ADDRESS_CLASS_2 (type
))
4338 puts_filtered (" TYPE_ADDRESS_CLASS_2");
4340 if (TYPE_RESTRICT (type
))
4342 puts_filtered (" TYPE_RESTRICT");
4344 if (TYPE_ATOMIC (type
))
4346 puts_filtered (" TYPE_ATOMIC");
4348 puts_filtered ("\n");
4350 printfi_filtered (spaces
, "flags");
4351 if (TYPE_UNSIGNED (type
))
4353 puts_filtered (" TYPE_UNSIGNED");
4355 if (TYPE_NOSIGN (type
))
4357 puts_filtered (" TYPE_NOSIGN");
4359 if (TYPE_STUB (type
))
4361 puts_filtered (" TYPE_STUB");
4363 if (TYPE_TARGET_STUB (type
))
4365 puts_filtered (" TYPE_TARGET_STUB");
4367 if (TYPE_STATIC (type
))
4369 puts_filtered (" TYPE_STATIC");
4371 if (TYPE_PROTOTYPED (type
))
4373 puts_filtered (" TYPE_PROTOTYPED");
4375 if (TYPE_INCOMPLETE (type
))
4377 puts_filtered (" TYPE_INCOMPLETE");
4379 if (TYPE_VARARGS (type
))
4381 puts_filtered (" TYPE_VARARGS");
4383 /* This is used for things like AltiVec registers on ppc. Gcc emits
4384 an attribute for the array type, which tells whether or not we
4385 have a vector, instead of a regular array. */
4386 if (TYPE_VECTOR (type
))
4388 puts_filtered (" TYPE_VECTOR");
4390 if (TYPE_FIXED_INSTANCE (type
))
4392 puts_filtered (" TYPE_FIXED_INSTANCE");
4394 if (TYPE_STUB_SUPPORTED (type
))
4396 puts_filtered (" TYPE_STUB_SUPPORTED");
4398 if (TYPE_NOTTEXT (type
))
4400 puts_filtered (" TYPE_NOTTEXT");
4402 puts_filtered ("\n");
4403 printfi_filtered (spaces
, "nfields %d ", TYPE_NFIELDS (type
));
4404 gdb_print_host_address (TYPE_FIELDS (type
), gdb_stdout
);
4405 puts_filtered ("\n");
4406 for (idx
= 0; idx
< TYPE_NFIELDS (type
); idx
++)
4408 if (TYPE_CODE (type
) == TYPE_CODE_ENUM
)
4409 printfi_filtered (spaces
+ 2,
4410 "[%d] enumval %s type ",
4411 idx
, plongest (TYPE_FIELD_ENUMVAL (type
, idx
)));
4413 printfi_filtered (spaces
+ 2,
4414 "[%d] bitpos %s bitsize %d type ",
4415 idx
, plongest (TYPE_FIELD_BITPOS (type
, idx
)),
4416 TYPE_FIELD_BITSIZE (type
, idx
));
4417 gdb_print_host_address (TYPE_FIELD_TYPE (type
, idx
), gdb_stdout
);
4418 printf_filtered (" name '%s' (",
4419 TYPE_FIELD_NAME (type
, idx
) != NULL
4420 ? TYPE_FIELD_NAME (type
, idx
)
4422 gdb_print_host_address (TYPE_FIELD_NAME (type
, idx
), gdb_stdout
);
4423 printf_filtered (")\n");
4424 if (TYPE_FIELD_TYPE (type
, idx
) != NULL
)
4426 recursive_dump_type (TYPE_FIELD_TYPE (type
, idx
), spaces
+ 4);
4429 if (TYPE_CODE (type
) == TYPE_CODE_RANGE
)
4431 printfi_filtered (spaces
, "low %s%s high %s%s\n",
4432 plongest (TYPE_LOW_BOUND (type
)),
4433 TYPE_LOW_BOUND_UNDEFINED (type
) ? " (undefined)" : "",
4434 plongest (TYPE_HIGH_BOUND (type
)),
4435 TYPE_HIGH_BOUND_UNDEFINED (type
)
4436 ? " (undefined)" : "");
4439 switch (TYPE_SPECIFIC_FIELD (type
))
4441 case TYPE_SPECIFIC_CPLUS_STUFF
:
4442 printfi_filtered (spaces
, "cplus_stuff ");
4443 gdb_print_host_address (TYPE_CPLUS_SPECIFIC (type
),
4445 puts_filtered ("\n");
4446 print_cplus_stuff (type
, spaces
);
4449 case TYPE_SPECIFIC_GNAT_STUFF
:
4450 printfi_filtered (spaces
, "gnat_stuff ");
4451 gdb_print_host_address (TYPE_GNAT_SPECIFIC (type
), gdb_stdout
);
4452 puts_filtered ("\n");
4453 print_gnat_stuff (type
, spaces
);
4456 case TYPE_SPECIFIC_FLOATFORMAT
:
4457 printfi_filtered (spaces
, "floatformat ");
4458 if (TYPE_FLOATFORMAT (type
) == NULL
)
4459 puts_filtered ("(null)");
4462 puts_filtered ("{ ");
4463 if (TYPE_FLOATFORMAT (type
)[0] == NULL
4464 || TYPE_FLOATFORMAT (type
)[0]->name
== NULL
)
4465 puts_filtered ("(null)");
4467 puts_filtered (TYPE_FLOATFORMAT (type
)[0]->name
);
4469 puts_filtered (", ");
4470 if (TYPE_FLOATFORMAT (type
)[1] == NULL
4471 || TYPE_FLOATFORMAT (type
)[1]->name
== NULL
)
4472 puts_filtered ("(null)");
4474 puts_filtered (TYPE_FLOATFORMAT (type
)[1]->name
);
4476 puts_filtered (" }");
4478 puts_filtered ("\n");
4481 case TYPE_SPECIFIC_FUNC
:
4482 printfi_filtered (spaces
, "calling_convention %d\n",
4483 TYPE_CALLING_CONVENTION (type
));
4484 /* tail_call_list is not printed. */
4487 case TYPE_SPECIFIC_SELF_TYPE
:
4488 printfi_filtered (spaces
, "self_type ");
4489 gdb_print_host_address (TYPE_SELF_TYPE (type
), gdb_stdout
);
4490 puts_filtered ("\n");
4495 obstack_free (&dont_print_type_obstack
, NULL
);
4498 /* Trivial helpers for the libiberty hash table, for mapping one
4503 struct type
*old
, *newobj
;
4507 type_pair_hash (const void *item
)
4509 const struct type_pair
*pair
= (const struct type_pair
*) item
;
4511 return htab_hash_pointer (pair
->old
);
4515 type_pair_eq (const void *item_lhs
, const void *item_rhs
)
4517 const struct type_pair
*lhs
= (const struct type_pair
*) item_lhs
;
4518 const struct type_pair
*rhs
= (const struct type_pair
*) item_rhs
;
4520 return lhs
->old
== rhs
->old
;
4523 /* Allocate the hash table used by copy_type_recursive to walk
4524 types without duplicates. We use OBJFILE's obstack, because
4525 OBJFILE is about to be deleted. */
4528 create_copied_types_hash (struct objfile
*objfile
)
4530 return htab_create_alloc_ex (1, type_pair_hash
, type_pair_eq
,
4531 NULL
, &objfile
->objfile_obstack
,
4532 hashtab_obstack_allocate
,
4533 dummy_obstack_deallocate
);
4536 /* Recursively copy (deep copy) a dynamic attribute list of a type. */
4538 static struct dynamic_prop_list
*
4539 copy_dynamic_prop_list (struct obstack
*objfile_obstack
,
4540 struct dynamic_prop_list
*list
)
4542 struct dynamic_prop_list
*copy
= list
;
4543 struct dynamic_prop_list
**node_ptr
= ©
;
4545 while (*node_ptr
!= NULL
)
4547 struct dynamic_prop_list
*node_copy
;
4549 node_copy
= ((struct dynamic_prop_list
*)
4550 obstack_copy (objfile_obstack
, *node_ptr
,
4551 sizeof (struct dynamic_prop_list
)));
4552 node_copy
->prop
= (*node_ptr
)->prop
;
4553 *node_ptr
= node_copy
;
4555 node_ptr
= &node_copy
->next
;
4561 /* Recursively copy (deep copy) TYPE, if it is associated with
4562 OBJFILE. Return a new type owned by the gdbarch associated with the type, a
4563 saved type if we have already visited TYPE (using COPIED_TYPES), or TYPE if
4564 it is not associated with OBJFILE. */
4567 copy_type_recursive (struct objfile
*objfile
,
4569 htab_t copied_types
)
4571 struct type_pair
*stored
, pair
;
4573 struct type
*new_type
;
4575 if (! TYPE_OBJFILE_OWNED (type
))
4578 /* This type shouldn't be pointing to any types in other objfiles;
4579 if it did, the type might disappear unexpectedly. */
4580 gdb_assert (TYPE_OBJFILE (type
) == objfile
);
4583 slot
= htab_find_slot (copied_types
, &pair
, INSERT
);
4585 return ((struct type_pair
*) *slot
)->newobj
;
4587 new_type
= alloc_type_arch (get_type_arch (type
));
4589 /* We must add the new type to the hash table immediately, in case
4590 we encounter this type again during a recursive call below. */
4591 stored
= XOBNEW (&objfile
->objfile_obstack
, struct type_pair
);
4593 stored
->newobj
= new_type
;
4596 /* Copy the common fields of types. For the main type, we simply
4597 copy the entire thing and then update specific fields as needed. */
4598 *TYPE_MAIN_TYPE (new_type
) = *TYPE_MAIN_TYPE (type
);
4599 TYPE_OBJFILE_OWNED (new_type
) = 0;
4600 TYPE_OWNER (new_type
).gdbarch
= get_type_arch (type
);
4602 if (TYPE_NAME (type
))
4603 TYPE_NAME (new_type
) = xstrdup (TYPE_NAME (type
));
4604 if (TYPE_TAG_NAME (type
))
4605 TYPE_TAG_NAME (new_type
) = xstrdup (TYPE_TAG_NAME (type
));
4607 TYPE_INSTANCE_FLAGS (new_type
) = TYPE_INSTANCE_FLAGS (type
);
4608 TYPE_LENGTH (new_type
) = TYPE_LENGTH (type
);
4610 /* Copy the fields. */
4611 if (TYPE_NFIELDS (type
))
4615 nfields
= TYPE_NFIELDS (type
);
4616 TYPE_FIELDS (new_type
) = XCNEWVEC (struct field
, nfields
);
4617 for (i
= 0; i
< nfields
; i
++)
4619 TYPE_FIELD_ARTIFICIAL (new_type
, i
) =
4620 TYPE_FIELD_ARTIFICIAL (type
, i
);
4621 TYPE_FIELD_BITSIZE (new_type
, i
) = TYPE_FIELD_BITSIZE (type
, i
);
4622 if (TYPE_FIELD_TYPE (type
, i
))
4623 TYPE_FIELD_TYPE (new_type
, i
)
4624 = copy_type_recursive (objfile
, TYPE_FIELD_TYPE (type
, i
),
4626 if (TYPE_FIELD_NAME (type
, i
))
4627 TYPE_FIELD_NAME (new_type
, i
) =
4628 xstrdup (TYPE_FIELD_NAME (type
, i
));
4629 switch (TYPE_FIELD_LOC_KIND (type
, i
))
4631 case FIELD_LOC_KIND_BITPOS
:
4632 SET_FIELD_BITPOS (TYPE_FIELD (new_type
, i
),
4633 TYPE_FIELD_BITPOS (type
, i
));
4635 case FIELD_LOC_KIND_ENUMVAL
:
4636 SET_FIELD_ENUMVAL (TYPE_FIELD (new_type
, i
),
4637 TYPE_FIELD_ENUMVAL (type
, i
));
4639 case FIELD_LOC_KIND_PHYSADDR
:
4640 SET_FIELD_PHYSADDR (TYPE_FIELD (new_type
, i
),
4641 TYPE_FIELD_STATIC_PHYSADDR (type
, i
));
4643 case FIELD_LOC_KIND_PHYSNAME
:
4644 SET_FIELD_PHYSNAME (TYPE_FIELD (new_type
, i
),
4645 xstrdup (TYPE_FIELD_STATIC_PHYSNAME (type
,
4649 internal_error (__FILE__
, __LINE__
,
4650 _("Unexpected type field location kind: %d"),
4651 TYPE_FIELD_LOC_KIND (type
, i
));
4656 /* For range types, copy the bounds information. */
4657 if (TYPE_CODE (type
) == TYPE_CODE_RANGE
)
4659 TYPE_RANGE_DATA (new_type
) = XNEW (struct range_bounds
);
4660 *TYPE_RANGE_DATA (new_type
) = *TYPE_RANGE_DATA (type
);
4663 if (TYPE_DYN_PROP_LIST (type
) != NULL
)
4664 TYPE_DYN_PROP_LIST (new_type
)
4665 = copy_dynamic_prop_list (&objfile
->objfile_obstack
,
4666 TYPE_DYN_PROP_LIST (type
));
4669 /* Copy pointers to other types. */
4670 if (TYPE_TARGET_TYPE (type
))
4671 TYPE_TARGET_TYPE (new_type
) =
4672 copy_type_recursive (objfile
,
4673 TYPE_TARGET_TYPE (type
),
4676 /* Maybe copy the type_specific bits.
4678 NOTE drow/2005-12-09: We do not copy the C++-specific bits like
4679 base classes and methods. There's no fundamental reason why we
4680 can't, but at the moment it is not needed. */
4682 switch (TYPE_SPECIFIC_FIELD (type
))
4684 case TYPE_SPECIFIC_NONE
:
4686 case TYPE_SPECIFIC_FUNC
:
4687 INIT_FUNC_SPECIFIC (new_type
);
4688 TYPE_CALLING_CONVENTION (new_type
) = TYPE_CALLING_CONVENTION (type
);
4689 TYPE_NO_RETURN (new_type
) = TYPE_NO_RETURN (type
);
4690 TYPE_TAIL_CALL_LIST (new_type
) = NULL
;
4692 case TYPE_SPECIFIC_FLOATFORMAT
:
4693 TYPE_FLOATFORMAT (new_type
) = TYPE_FLOATFORMAT (type
);
4695 case TYPE_SPECIFIC_CPLUS_STUFF
:
4696 INIT_CPLUS_SPECIFIC (new_type
);
4698 case TYPE_SPECIFIC_GNAT_STUFF
:
4699 INIT_GNAT_SPECIFIC (new_type
);
4701 case TYPE_SPECIFIC_SELF_TYPE
:
4702 set_type_self_type (new_type
,
4703 copy_type_recursive (objfile
, TYPE_SELF_TYPE (type
),
4707 gdb_assert_not_reached ("bad type_specific_kind");
4713 /* Make a copy of the given TYPE, except that the pointer & reference
4714 types are not preserved.
4716 This function assumes that the given type has an associated objfile.
4717 This objfile is used to allocate the new type. */
4720 copy_type (const struct type
*type
)
4722 struct type
*new_type
;
4724 gdb_assert (TYPE_OBJFILE_OWNED (type
));
4726 new_type
= alloc_type_copy (type
);
4727 TYPE_INSTANCE_FLAGS (new_type
) = TYPE_INSTANCE_FLAGS (type
);
4728 TYPE_LENGTH (new_type
) = TYPE_LENGTH (type
);
4729 memcpy (TYPE_MAIN_TYPE (new_type
), TYPE_MAIN_TYPE (type
),
4730 sizeof (struct main_type
));
4731 if (TYPE_DYN_PROP_LIST (type
) != NULL
)
4732 TYPE_DYN_PROP_LIST (new_type
)
4733 = copy_dynamic_prop_list (&TYPE_OBJFILE (type
) -> objfile_obstack
,
4734 TYPE_DYN_PROP_LIST (type
));
4739 /* Helper functions to initialize architecture-specific types. */
4741 /* Allocate a type structure associated with GDBARCH and set its
4742 CODE, LENGTH, and NAME fields. */
4745 arch_type (struct gdbarch
*gdbarch
,
4746 enum type_code code
, int length
, const char *name
)
4750 type
= alloc_type_arch (gdbarch
);
4751 set_type_code (type
, code
);
4752 TYPE_LENGTH (type
) = length
;
4755 TYPE_NAME (type
) = gdbarch_obstack_strdup (gdbarch
, name
);
4760 /* Allocate a TYPE_CODE_INT type structure associated with GDBARCH.
4761 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
4762 the type's TYPE_UNSIGNED flag. NAME is the type name. */
4765 arch_integer_type (struct gdbarch
*gdbarch
,
4766 int bit
, int unsigned_p
, const char *name
)
4770 t
= arch_type (gdbarch
, TYPE_CODE_INT
, bit
/ TARGET_CHAR_BIT
, name
);
4772 TYPE_UNSIGNED (t
) = 1;
4777 /* Allocate a TYPE_CODE_CHAR type structure associated with GDBARCH.
4778 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
4779 the type's TYPE_UNSIGNED flag. NAME is the type name. */
4782 arch_character_type (struct gdbarch
*gdbarch
,
4783 int bit
, int unsigned_p
, const char *name
)
4787 t
= arch_type (gdbarch
, TYPE_CODE_CHAR
, bit
/ TARGET_CHAR_BIT
, name
);
4789 TYPE_UNSIGNED (t
) = 1;
4794 /* Allocate a TYPE_CODE_BOOL type structure associated with GDBARCH.
4795 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
4796 the type's TYPE_UNSIGNED flag. NAME is the type name. */
4799 arch_boolean_type (struct gdbarch
*gdbarch
,
4800 int bit
, int unsigned_p
, const char *name
)
4804 t
= arch_type (gdbarch
, TYPE_CODE_BOOL
, bit
/ TARGET_CHAR_BIT
, name
);
4806 TYPE_UNSIGNED (t
) = 1;
4811 /* Allocate a TYPE_CODE_FLT type structure associated with GDBARCH.
4812 BIT is the type size in bits; if BIT equals -1, the size is
4813 determined by the floatformat. NAME is the type name. Set the
4814 TYPE_FLOATFORMAT from FLOATFORMATS. */
4817 arch_float_type (struct gdbarch
*gdbarch
,
4818 int bit
, const char *name
,
4819 const struct floatformat
**floatformats
)
4823 bit
= verify_floatformat (bit
, floatformats
);
4824 t
= arch_type (gdbarch
, TYPE_CODE_FLT
, bit
/ TARGET_CHAR_BIT
, name
);
4825 TYPE_FLOATFORMAT (t
) = floatformats
;
4830 /* Allocate a TYPE_CODE_DECFLOAT type structure associated with GDBARCH.
4831 BIT is the type size in bits. NAME is the type name. */
4834 arch_decfloat_type (struct gdbarch
*gdbarch
, int bit
, const char *name
)
4838 t
= arch_type (gdbarch
, TYPE_CODE_DECFLOAT
, bit
/ TARGET_CHAR_BIT
, name
);
4842 /* Allocate a TYPE_CODE_COMPLEX type structure associated with GDBARCH.
4843 NAME is the type name. TARGET_TYPE is the component float type. */
4846 arch_complex_type (struct gdbarch
*gdbarch
,
4847 const char *name
, struct type
*target_type
)
4851 t
= arch_type (gdbarch
, TYPE_CODE_COMPLEX
,
4852 2 * TYPE_LENGTH (target_type
), name
);
4853 TYPE_TARGET_TYPE (t
) = target_type
;
4857 /* Allocate a TYPE_CODE_PTR type structure associated with GDBARCH.
4858 BIT is the pointer type size in bits. NAME is the type name.
4859 TARGET_TYPE is the pointer target type. Always sets the pointer type's
4860 TYPE_UNSIGNED flag. */
4863 arch_pointer_type (struct gdbarch
*gdbarch
,
4864 int bit
, const char *name
, struct type
*target_type
)
4868 t
= arch_type (gdbarch
, TYPE_CODE_PTR
, bit
/ TARGET_CHAR_BIT
, name
);
4869 TYPE_TARGET_TYPE (t
) = target_type
;
4870 TYPE_UNSIGNED (t
) = 1;
4874 /* Allocate a TYPE_CODE_FLAGS type structure associated with GDBARCH.
4875 NAME is the type name. LENGTH is the size of the flag word in bytes. */
4878 arch_flags_type (struct gdbarch
*gdbarch
, const char *name
, int length
)
4880 int max_nfields
= length
* TARGET_CHAR_BIT
;
4883 type
= arch_type (gdbarch
, TYPE_CODE_FLAGS
, length
, name
);
4884 TYPE_UNSIGNED (type
) = 1;
4885 TYPE_NFIELDS (type
) = 0;
4886 /* Pre-allocate enough space assuming every field is one bit. */
4888 = (struct field
*) TYPE_ZALLOC (type
, max_nfields
* sizeof (struct field
));
4893 /* Add field to TYPE_CODE_FLAGS type TYPE to indicate the bit at
4894 position BITPOS is called NAME. Pass NAME as "" for fields that
4895 should not be printed. */
4898 append_flags_type_field (struct type
*type
, int start_bitpos
, int nr_bits
,
4899 struct type
*field_type
, const char *name
)
4901 int type_bitsize
= TYPE_LENGTH (type
) * TARGET_CHAR_BIT
;
4902 int field_nr
= TYPE_NFIELDS (type
);
4904 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_FLAGS
);
4905 gdb_assert (TYPE_NFIELDS (type
) + 1 <= type_bitsize
);
4906 gdb_assert (start_bitpos
>= 0 && start_bitpos
< type_bitsize
);
4907 gdb_assert (nr_bits
>= 1 && nr_bits
<= type_bitsize
);
4908 gdb_assert (name
!= NULL
);
4910 TYPE_FIELD_NAME (type
, field_nr
) = xstrdup (name
);
4911 TYPE_FIELD_TYPE (type
, field_nr
) = field_type
;
4912 SET_FIELD_BITPOS (TYPE_FIELD (type
, field_nr
), start_bitpos
);
4913 TYPE_FIELD_BITSIZE (type
, field_nr
) = nr_bits
;
4914 ++TYPE_NFIELDS (type
);
4917 /* Special version of append_flags_type_field to add a flag field.
4918 Add field to TYPE_CODE_FLAGS type TYPE to indicate the bit at
4919 position BITPOS is called NAME. */
4922 append_flags_type_flag (struct type
*type
, int bitpos
, const char *name
)
4924 struct gdbarch
*gdbarch
= get_type_arch (type
);
4926 append_flags_type_field (type
, bitpos
, 1,
4927 builtin_type (gdbarch
)->builtin_bool
,
4931 /* Allocate a TYPE_CODE_STRUCT or TYPE_CODE_UNION type structure (as
4932 specified by CODE) associated with GDBARCH. NAME is the type name. */
4935 arch_composite_type (struct gdbarch
*gdbarch
, const char *name
,
4936 enum type_code code
)
4940 gdb_assert (code
== TYPE_CODE_STRUCT
|| code
== TYPE_CODE_UNION
);
4941 t
= arch_type (gdbarch
, code
, 0, NULL
);
4942 TYPE_TAG_NAME (t
) = name
;
4943 INIT_CPLUS_SPECIFIC (t
);
4947 /* Add new field with name NAME and type FIELD to composite type T.
4948 Do not set the field's position or adjust the type's length;
4949 the caller should do so. Return the new field. */
4952 append_composite_type_field_raw (struct type
*t
, const char *name
,
4957 TYPE_NFIELDS (t
) = TYPE_NFIELDS (t
) + 1;
4958 TYPE_FIELDS (t
) = XRESIZEVEC (struct field
, TYPE_FIELDS (t
),
4960 f
= &(TYPE_FIELDS (t
)[TYPE_NFIELDS (t
) - 1]);
4961 memset (f
, 0, sizeof f
[0]);
4962 FIELD_TYPE (f
[0]) = field
;
4963 FIELD_NAME (f
[0]) = name
;
4967 /* Add new field with name NAME and type FIELD to composite type T.
4968 ALIGNMENT (if non-zero) specifies the minimum field alignment. */
4971 append_composite_type_field_aligned (struct type
*t
, const char *name
,
4972 struct type
*field
, int alignment
)
4974 struct field
*f
= append_composite_type_field_raw (t
, name
, field
);
4976 if (TYPE_CODE (t
) == TYPE_CODE_UNION
)
4978 if (TYPE_LENGTH (t
) < TYPE_LENGTH (field
))
4979 TYPE_LENGTH (t
) = TYPE_LENGTH (field
);
4981 else if (TYPE_CODE (t
) == TYPE_CODE_STRUCT
)
4983 TYPE_LENGTH (t
) = TYPE_LENGTH (t
) + TYPE_LENGTH (field
);
4984 if (TYPE_NFIELDS (t
) > 1)
4986 SET_FIELD_BITPOS (f
[0],
4987 (FIELD_BITPOS (f
[-1])
4988 + (TYPE_LENGTH (FIELD_TYPE (f
[-1]))
4989 * TARGET_CHAR_BIT
)));
4995 alignment
*= TARGET_CHAR_BIT
;
4996 left
= FIELD_BITPOS (f
[0]) % alignment
;
5000 SET_FIELD_BITPOS (f
[0], FIELD_BITPOS (f
[0]) + (alignment
- left
));
5001 TYPE_LENGTH (t
) += (alignment
- left
) / TARGET_CHAR_BIT
;
5008 /* Add new field with name NAME and type FIELD to composite type T. */
5011 append_composite_type_field (struct type
*t
, const char *name
,
5014 append_composite_type_field_aligned (t
, name
, field
, 0);
5017 static struct gdbarch_data
*gdbtypes_data
;
5019 const struct builtin_type
*
5020 builtin_type (struct gdbarch
*gdbarch
)
5022 return (const struct builtin_type
*) gdbarch_data (gdbarch
, gdbtypes_data
);
5026 gdbtypes_post_init (struct gdbarch
*gdbarch
)
5028 struct builtin_type
*builtin_type
5029 = GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct builtin_type
);
5032 builtin_type
->builtin_void
5033 = arch_type (gdbarch
, TYPE_CODE_VOID
, 1, "void");
5034 builtin_type
->builtin_char
5035 = arch_integer_type (gdbarch
, TARGET_CHAR_BIT
,
5036 !gdbarch_char_signed (gdbarch
), "char");
5037 TYPE_NOSIGN (builtin_type
->builtin_char
) = 1;
5038 builtin_type
->builtin_signed_char
5039 = arch_integer_type (gdbarch
, TARGET_CHAR_BIT
,
5041 builtin_type
->builtin_unsigned_char
5042 = arch_integer_type (gdbarch
, TARGET_CHAR_BIT
,
5043 1, "unsigned char");
5044 builtin_type
->builtin_short
5045 = arch_integer_type (gdbarch
, gdbarch_short_bit (gdbarch
),
5047 builtin_type
->builtin_unsigned_short
5048 = arch_integer_type (gdbarch
, gdbarch_short_bit (gdbarch
),
5049 1, "unsigned short");
5050 builtin_type
->builtin_int
5051 = arch_integer_type (gdbarch
, gdbarch_int_bit (gdbarch
),
5053 builtin_type
->builtin_unsigned_int
5054 = arch_integer_type (gdbarch
, gdbarch_int_bit (gdbarch
),
5056 builtin_type
->builtin_long
5057 = arch_integer_type (gdbarch
, gdbarch_long_bit (gdbarch
),
5059 builtin_type
->builtin_unsigned_long
5060 = arch_integer_type (gdbarch
, gdbarch_long_bit (gdbarch
),
5061 1, "unsigned long");
5062 builtin_type
->builtin_long_long
5063 = arch_integer_type (gdbarch
, gdbarch_long_long_bit (gdbarch
),
5065 builtin_type
->builtin_unsigned_long_long
5066 = arch_integer_type (gdbarch
, gdbarch_long_long_bit (gdbarch
),
5067 1, "unsigned long long");
5068 builtin_type
->builtin_float
5069 = arch_float_type (gdbarch
, gdbarch_float_bit (gdbarch
),
5070 "float", gdbarch_float_format (gdbarch
));
5071 builtin_type
->builtin_double
5072 = arch_float_type (gdbarch
, gdbarch_double_bit (gdbarch
),
5073 "double", gdbarch_double_format (gdbarch
));
5074 builtin_type
->builtin_long_double
5075 = arch_float_type (gdbarch
, gdbarch_long_double_bit (gdbarch
),
5076 "long double", gdbarch_long_double_format (gdbarch
));
5077 builtin_type
->builtin_complex
5078 = arch_complex_type (gdbarch
, "complex",
5079 builtin_type
->builtin_float
);
5080 builtin_type
->builtin_double_complex
5081 = arch_complex_type (gdbarch
, "double complex",
5082 builtin_type
->builtin_double
);
5083 builtin_type
->builtin_string
5084 = arch_type (gdbarch
, TYPE_CODE_STRING
, 1, "string");
5085 builtin_type
->builtin_bool
5086 = arch_type (gdbarch
, TYPE_CODE_BOOL
, 1, "bool");
5088 /* The following three are about decimal floating point types, which
5089 are 32-bits, 64-bits and 128-bits respectively. */
5090 builtin_type
->builtin_decfloat
5091 = arch_decfloat_type (gdbarch
, 32, "_Decimal32");
5092 builtin_type
->builtin_decdouble
5093 = arch_decfloat_type (gdbarch
, 64, "_Decimal64");
5094 builtin_type
->builtin_declong
5095 = arch_decfloat_type (gdbarch
, 128, "_Decimal128");
5097 /* "True" character types. */
5098 builtin_type
->builtin_true_char
5099 = arch_character_type (gdbarch
, TARGET_CHAR_BIT
, 0, "true character");
5100 builtin_type
->builtin_true_unsigned_char
5101 = arch_character_type (gdbarch
, TARGET_CHAR_BIT
, 1, "true character");
5103 /* Fixed-size integer types. */
5104 builtin_type
->builtin_int0
5105 = arch_integer_type (gdbarch
, 0, 0, "int0_t");
5106 builtin_type
->builtin_int8
5107 = arch_integer_type (gdbarch
, 8, 0, "int8_t");
5108 builtin_type
->builtin_uint8
5109 = arch_integer_type (gdbarch
, 8, 1, "uint8_t");
5110 builtin_type
->builtin_int16
5111 = arch_integer_type (gdbarch
, 16, 0, "int16_t");
5112 builtin_type
->builtin_uint16
5113 = arch_integer_type (gdbarch
, 16, 1, "uint16_t");
5114 builtin_type
->builtin_int32
5115 = arch_integer_type (gdbarch
, 32, 0, "int32_t");
5116 builtin_type
->builtin_uint32
5117 = arch_integer_type (gdbarch
, 32, 1, "uint32_t");
5118 builtin_type
->builtin_int64
5119 = arch_integer_type (gdbarch
, 64, 0, "int64_t");
5120 builtin_type
->builtin_uint64
5121 = arch_integer_type (gdbarch
, 64, 1, "uint64_t");
5122 builtin_type
->builtin_int128
5123 = arch_integer_type (gdbarch
, 128, 0, "int128_t");
5124 builtin_type
->builtin_uint128
5125 = arch_integer_type (gdbarch
, 128, 1, "uint128_t");
5126 TYPE_INSTANCE_FLAGS (builtin_type
->builtin_int8
) |=
5127 TYPE_INSTANCE_FLAG_NOTTEXT
;
5128 TYPE_INSTANCE_FLAGS (builtin_type
->builtin_uint8
) |=
5129 TYPE_INSTANCE_FLAG_NOTTEXT
;
5131 /* Wide character types. */
5132 builtin_type
->builtin_char16
5133 = arch_integer_type (gdbarch
, 16, 0, "char16_t");
5134 builtin_type
->builtin_char32
5135 = arch_integer_type (gdbarch
, 32, 0, "char32_t");
5138 /* Default data/code pointer types. */
5139 builtin_type
->builtin_data_ptr
5140 = lookup_pointer_type (builtin_type
->builtin_void
);
5141 builtin_type
->builtin_func_ptr
5142 = lookup_pointer_type (lookup_function_type (builtin_type
->builtin_void
));
5143 builtin_type
->builtin_func_func
5144 = lookup_function_type (builtin_type
->builtin_func_ptr
);
5146 /* This type represents a GDB internal function. */
5147 builtin_type
->internal_fn
5148 = arch_type (gdbarch
, TYPE_CODE_INTERNAL_FUNCTION
, 0,
5149 "<internal function>");
5151 /* This type represents an xmethod. */
5152 builtin_type
->xmethod
5153 = arch_type (gdbarch
, TYPE_CODE_XMETHOD
, 0, "<xmethod>");
5155 return builtin_type
;
5158 /* This set of objfile-based types is intended to be used by symbol
5159 readers as basic types. */
5161 static const struct objfile_data
*objfile_type_data
;
5163 const struct objfile_type
*
5164 objfile_type (struct objfile
*objfile
)
5166 struct gdbarch
*gdbarch
;
5167 struct objfile_type
*objfile_type
5168 = (struct objfile_type
*) objfile_data (objfile
, objfile_type_data
);
5171 return objfile_type
;
5173 objfile_type
= OBSTACK_CALLOC (&objfile
->objfile_obstack
,
5174 1, struct objfile_type
);
5176 /* Use the objfile architecture to determine basic type properties. */
5177 gdbarch
= get_objfile_arch (objfile
);
5180 objfile_type
->builtin_void
5181 = init_type (objfile
, TYPE_CODE_VOID
, 1, "void");
5182 objfile_type
->builtin_char
5183 = init_integer_type (objfile
, TARGET_CHAR_BIT
,
5184 !gdbarch_char_signed (gdbarch
), "char");
5185 TYPE_NOSIGN (objfile_type
->builtin_char
) = 1;
5186 objfile_type
->builtin_signed_char
5187 = init_integer_type (objfile
, TARGET_CHAR_BIT
,
5189 objfile_type
->builtin_unsigned_char
5190 = init_integer_type (objfile
, TARGET_CHAR_BIT
,
5191 1, "unsigned char");
5192 objfile_type
->builtin_short
5193 = init_integer_type (objfile
, gdbarch_short_bit (gdbarch
),
5195 objfile_type
->builtin_unsigned_short
5196 = init_integer_type (objfile
, gdbarch_short_bit (gdbarch
),
5197 1, "unsigned short");
5198 objfile_type
->builtin_int
5199 = init_integer_type (objfile
, gdbarch_int_bit (gdbarch
),
5201 objfile_type
->builtin_unsigned_int
5202 = init_integer_type (objfile
, gdbarch_int_bit (gdbarch
),
5204 objfile_type
->builtin_long
5205 = init_integer_type (objfile
, gdbarch_long_bit (gdbarch
),
5207 objfile_type
->builtin_unsigned_long
5208 = init_integer_type (objfile
, gdbarch_long_bit (gdbarch
),
5209 1, "unsigned long");
5210 objfile_type
->builtin_long_long
5211 = init_integer_type (objfile
, gdbarch_long_long_bit (gdbarch
),
5213 objfile_type
->builtin_unsigned_long_long
5214 = init_integer_type (objfile
, gdbarch_long_long_bit (gdbarch
),
5215 1, "unsigned long long");
5216 objfile_type
->builtin_float
5217 = init_float_type (objfile
, gdbarch_float_bit (gdbarch
),
5218 "float", gdbarch_float_format (gdbarch
));
5219 objfile_type
->builtin_double
5220 = init_float_type (objfile
, gdbarch_double_bit (gdbarch
),
5221 "double", gdbarch_double_format (gdbarch
));
5222 objfile_type
->builtin_long_double
5223 = init_float_type (objfile
, gdbarch_long_double_bit (gdbarch
),
5224 "long double", gdbarch_long_double_format (gdbarch
));
5226 /* This type represents a type that was unrecognized in symbol read-in. */
5227 objfile_type
->builtin_error
5228 = init_type (objfile
, TYPE_CODE_ERROR
, 0, "<unknown type>");
5230 /* The following set of types is used for symbols with no
5231 debug information. */
5232 objfile_type
->nodebug_text_symbol
5233 = init_type (objfile
, TYPE_CODE_FUNC
, 1,
5234 "<text variable, no debug info>");
5235 TYPE_TARGET_TYPE (objfile_type
->nodebug_text_symbol
)
5236 = objfile_type
->builtin_int
;
5237 objfile_type
->nodebug_text_gnu_ifunc_symbol
5238 = init_type (objfile
, TYPE_CODE_FUNC
, 1,
5239 "<text gnu-indirect-function variable, no debug info>");
5240 TYPE_TARGET_TYPE (objfile_type
->nodebug_text_gnu_ifunc_symbol
)
5241 = objfile_type
->nodebug_text_symbol
;
5242 TYPE_GNU_IFUNC (objfile_type
->nodebug_text_gnu_ifunc_symbol
) = 1;
5243 objfile_type
->nodebug_got_plt_symbol
5244 = init_pointer_type (objfile
, gdbarch_addr_bit (gdbarch
),
5245 "<text from jump slot in .got.plt, no debug info>",
5246 objfile_type
->nodebug_text_symbol
);
5247 objfile_type
->nodebug_data_symbol
5248 = init_integer_type (objfile
, gdbarch_int_bit (gdbarch
), 0,
5249 "<data variable, no debug info>");
5250 objfile_type
->nodebug_unknown_symbol
5251 = init_integer_type (objfile
, TARGET_CHAR_BIT
, 0,
5252 "<variable (not text or data), no debug info>");
5253 objfile_type
->nodebug_tls_symbol
5254 = init_integer_type (objfile
, gdbarch_int_bit (gdbarch
), 0,
5255 "<thread local variable, no debug info>");
5257 /* NOTE: on some targets, addresses and pointers are not necessarily
5261 - gdb's `struct type' always describes the target's
5263 - gdb's `struct value' objects should always hold values in
5265 - gdb's CORE_ADDR values are addresses in the unified virtual
5266 address space that the assembler and linker work with. Thus,
5267 since target_read_memory takes a CORE_ADDR as an argument, it
5268 can access any memory on the target, even if the processor has
5269 separate code and data address spaces.
5271 In this context, objfile_type->builtin_core_addr is a bit odd:
5272 it's a target type for a value the target will never see. It's
5273 only used to hold the values of (typeless) linker symbols, which
5274 are indeed in the unified virtual address space. */
5276 objfile_type
->builtin_core_addr
5277 = init_integer_type (objfile
, gdbarch_addr_bit (gdbarch
), 1,
5280 set_objfile_data (objfile
, objfile_type_data
, objfile_type
);
5281 return objfile_type
;
5284 extern initialize_file_ftype _initialize_gdbtypes
;
5287 _initialize_gdbtypes (void)
5289 gdbtypes_data
= gdbarch_data_register_post_init (gdbtypes_post_init
);
5290 objfile_type_data
= register_objfile_data ();
5292 add_setshow_zuinteger_cmd ("overload", no_class
, &overload_debug
,
5293 _("Set debugging of C++ overloading."),
5294 _("Show debugging of C++ overloading."),
5295 _("When enabled, ranking of the "
5296 "functions is displayed."),
5298 show_overload_debug
,
5299 &setdebuglist
, &showdebuglist
);
5301 /* Add user knob for controlling resolution of opaque types. */
5302 add_setshow_boolean_cmd ("opaque-type-resolution", class_support
,
5303 &opaque_type_resolution
,
5304 _("Set resolution of opaque struct/class/union"
5305 " types (if set before loading symbols)."),
5306 _("Show resolution of opaque struct/class/union"
5307 " types (if set before loading symbols)."),
5309 show_opaque_type_resolution
,
5310 &setlist
, &showlist
);
5312 /* Add an option to permit non-strict type checking. */
5313 add_setshow_boolean_cmd ("type", class_support
,
5314 &strict_type_checking
,
5315 _("Set strict type checking."),
5316 _("Show strict type checking."),
5318 show_strict_type_checking
,
5319 &setchecklist
, &showchecklist
);