1 /* Support routines for manipulating internal types for GDB.
3 Copyright (C) 1992-2014 Free Software Foundation, Inc.
5 Contributed by Cygnus Support, using pieces from other GDB modules.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
29 #include "expression.h"
34 #include "complaints.h"
37 #include "gdb_assert.h"
39 #include "exceptions.h"
40 #include "cp-support.h"
42 #include "dwarf2loc.h"
44 /* Initialize BADNESS constants. */
46 const struct rank LENGTH_MISMATCH_BADNESS
= {100,0};
48 const struct rank TOO_FEW_PARAMS_BADNESS
= {100,0};
49 const struct rank INCOMPATIBLE_TYPE_BADNESS
= {100,0};
51 const struct rank EXACT_MATCH_BADNESS
= {0,0};
53 const struct rank INTEGER_PROMOTION_BADNESS
= {1,0};
54 const struct rank FLOAT_PROMOTION_BADNESS
= {1,0};
55 const struct rank BASE_PTR_CONVERSION_BADNESS
= {1,0};
56 const struct rank INTEGER_CONVERSION_BADNESS
= {2,0};
57 const struct rank FLOAT_CONVERSION_BADNESS
= {2,0};
58 const struct rank INT_FLOAT_CONVERSION_BADNESS
= {2,0};
59 const struct rank VOID_PTR_CONVERSION_BADNESS
= {2,0};
60 const struct rank BOOL_CONVERSION_BADNESS
= {3,0};
61 const struct rank BASE_CONVERSION_BADNESS
= {2,0};
62 const struct rank REFERENCE_CONVERSION_BADNESS
= {2,0};
63 const struct rank NULL_POINTER_CONVERSION_BADNESS
= {2,0};
64 const struct rank NS_POINTER_CONVERSION_BADNESS
= {10,0};
65 const struct rank NS_INTEGER_POINTER_CONVERSION_BADNESS
= {3,0};
67 /* Floatformat pairs. */
68 const struct floatformat
*floatformats_ieee_half
[BFD_ENDIAN_UNKNOWN
] = {
69 &floatformat_ieee_half_big
,
70 &floatformat_ieee_half_little
72 const struct floatformat
*floatformats_ieee_single
[BFD_ENDIAN_UNKNOWN
] = {
73 &floatformat_ieee_single_big
,
74 &floatformat_ieee_single_little
76 const struct floatformat
*floatformats_ieee_double
[BFD_ENDIAN_UNKNOWN
] = {
77 &floatformat_ieee_double_big
,
78 &floatformat_ieee_double_little
80 const struct floatformat
*floatformats_ieee_double_littlebyte_bigword
[BFD_ENDIAN_UNKNOWN
] = {
81 &floatformat_ieee_double_big
,
82 &floatformat_ieee_double_littlebyte_bigword
84 const struct floatformat
*floatformats_i387_ext
[BFD_ENDIAN_UNKNOWN
] = {
85 &floatformat_i387_ext
,
88 const struct floatformat
*floatformats_m68881_ext
[BFD_ENDIAN_UNKNOWN
] = {
89 &floatformat_m68881_ext
,
90 &floatformat_m68881_ext
92 const struct floatformat
*floatformats_arm_ext
[BFD_ENDIAN_UNKNOWN
] = {
93 &floatformat_arm_ext_big
,
94 &floatformat_arm_ext_littlebyte_bigword
96 const struct floatformat
*floatformats_ia64_spill
[BFD_ENDIAN_UNKNOWN
] = {
97 &floatformat_ia64_spill_big
,
98 &floatformat_ia64_spill_little
100 const struct floatformat
*floatformats_ia64_quad
[BFD_ENDIAN_UNKNOWN
] = {
101 &floatformat_ia64_quad_big
,
102 &floatformat_ia64_quad_little
104 const struct floatformat
*floatformats_vax_f
[BFD_ENDIAN_UNKNOWN
] = {
108 const struct floatformat
*floatformats_vax_d
[BFD_ENDIAN_UNKNOWN
] = {
112 const struct floatformat
*floatformats_ibm_long_double
[BFD_ENDIAN_UNKNOWN
] = {
113 &floatformat_ibm_long_double_big
,
114 &floatformat_ibm_long_double_little
117 /* Should opaque types be resolved? */
119 static int opaque_type_resolution
= 1;
121 /* A flag to enable printing of debugging information of C++
124 unsigned int overload_debug
= 0;
126 /* A flag to enable strict type checking. */
128 static int strict_type_checking
= 1;
130 /* A function to show whether opaque types are resolved. */
133 show_opaque_type_resolution (struct ui_file
*file
, int from_tty
,
134 struct cmd_list_element
*c
,
137 fprintf_filtered (file
, _("Resolution of opaque struct/class/union types "
138 "(if set before loading symbols) is %s.\n"),
142 /* A function to show whether C++ overload debugging is enabled. */
145 show_overload_debug (struct ui_file
*file
, int from_tty
,
146 struct cmd_list_element
*c
, const char *value
)
148 fprintf_filtered (file
, _("Debugging of C++ overloading is %s.\n"),
152 /* A function to show the status of strict type checking. */
155 show_strict_type_checking (struct ui_file
*file
, int from_tty
,
156 struct cmd_list_element
*c
, const char *value
)
158 fprintf_filtered (file
, _("Strict type checking is %s.\n"), value
);
162 /* Allocate a new OBJFILE-associated type structure and fill it
163 with some defaults. Space for the type structure is allocated
164 on the objfile's objfile_obstack. */
167 alloc_type (struct objfile
*objfile
)
171 gdb_assert (objfile
!= NULL
);
173 /* Alloc the structure and start off with all fields zeroed. */
174 type
= OBSTACK_ZALLOC (&objfile
->objfile_obstack
, struct type
);
175 TYPE_MAIN_TYPE (type
) = OBSTACK_ZALLOC (&objfile
->objfile_obstack
,
177 OBJSTAT (objfile
, n_types
++);
179 TYPE_OBJFILE_OWNED (type
) = 1;
180 TYPE_OWNER (type
).objfile
= objfile
;
182 /* Initialize the fields that might not be zero. */
184 TYPE_CODE (type
) = TYPE_CODE_UNDEF
;
185 TYPE_VPTR_FIELDNO (type
) = -1;
186 TYPE_CHAIN (type
) = type
; /* Chain back to itself. */
191 /* Allocate a new GDBARCH-associated type structure and fill it
192 with some defaults. Space for the type structure is allocated
196 alloc_type_arch (struct gdbarch
*gdbarch
)
200 gdb_assert (gdbarch
!= NULL
);
202 /* Alloc the structure and start off with all fields zeroed. */
204 type
= XCNEW (struct type
);
205 TYPE_MAIN_TYPE (type
) = XCNEW (struct main_type
);
207 TYPE_OBJFILE_OWNED (type
) = 0;
208 TYPE_OWNER (type
).gdbarch
= gdbarch
;
210 /* Initialize the fields that might not be zero. */
212 TYPE_CODE (type
) = TYPE_CODE_UNDEF
;
213 TYPE_VPTR_FIELDNO (type
) = -1;
214 TYPE_CHAIN (type
) = type
; /* Chain back to itself. */
219 /* If TYPE is objfile-associated, allocate a new type structure
220 associated with the same objfile. If TYPE is gdbarch-associated,
221 allocate a new type structure associated with the same gdbarch. */
224 alloc_type_copy (const struct type
*type
)
226 if (TYPE_OBJFILE_OWNED (type
))
227 return alloc_type (TYPE_OWNER (type
).objfile
);
229 return alloc_type_arch (TYPE_OWNER (type
).gdbarch
);
232 /* If TYPE is gdbarch-associated, return that architecture.
233 If TYPE is objfile-associated, return that objfile's architecture. */
236 get_type_arch (const struct type
*type
)
238 if (TYPE_OBJFILE_OWNED (type
))
239 return get_objfile_arch (TYPE_OWNER (type
).objfile
);
241 return TYPE_OWNER (type
).gdbarch
;
244 /* See gdbtypes.h. */
247 get_target_type (struct type
*type
)
251 type
= TYPE_TARGET_TYPE (type
);
253 type
= check_typedef (type
);
259 /* Alloc a new type instance structure, fill it with some defaults,
260 and point it at OLDTYPE. Allocate the new type instance from the
261 same place as OLDTYPE. */
264 alloc_type_instance (struct type
*oldtype
)
268 /* Allocate the structure. */
270 if (! TYPE_OBJFILE_OWNED (oldtype
))
271 type
= XCNEW (struct type
);
273 type
= OBSTACK_ZALLOC (&TYPE_OBJFILE (oldtype
)->objfile_obstack
,
276 TYPE_MAIN_TYPE (type
) = TYPE_MAIN_TYPE (oldtype
);
278 TYPE_CHAIN (type
) = type
; /* Chain back to itself for now. */
283 /* Clear all remnants of the previous type at TYPE, in preparation for
284 replacing it with something else. Preserve owner information. */
287 smash_type (struct type
*type
)
289 int objfile_owned
= TYPE_OBJFILE_OWNED (type
);
290 union type_owner owner
= TYPE_OWNER (type
);
292 memset (TYPE_MAIN_TYPE (type
), 0, sizeof (struct main_type
));
294 /* Restore owner information. */
295 TYPE_OBJFILE_OWNED (type
) = objfile_owned
;
296 TYPE_OWNER (type
) = owner
;
298 /* For now, delete the rings. */
299 TYPE_CHAIN (type
) = type
;
301 /* For now, leave the pointer/reference types alone. */
304 /* Lookup a pointer to a type TYPE. TYPEPTR, if nonzero, points
305 to a pointer to memory where the pointer type should be stored.
306 If *TYPEPTR is zero, update it to point to the pointer type we return.
307 We allocate new memory if needed. */
310 make_pointer_type (struct type
*type
, struct type
**typeptr
)
312 struct type
*ntype
; /* New type */
315 ntype
= TYPE_POINTER_TYPE (type
);
320 return ntype
; /* Don't care about alloc,
321 and have new type. */
322 else if (*typeptr
== 0)
324 *typeptr
= ntype
; /* Tracking alloc, and have new type. */
329 if (typeptr
== 0 || *typeptr
== 0) /* We'll need to allocate one. */
331 ntype
= alloc_type_copy (type
);
335 else /* We have storage, but need to reset it. */
338 chain
= TYPE_CHAIN (ntype
);
340 TYPE_CHAIN (ntype
) = chain
;
343 TYPE_TARGET_TYPE (ntype
) = type
;
344 TYPE_POINTER_TYPE (type
) = ntype
;
346 /* FIXME! Assumes the machine has only one representation for pointers! */
349 = gdbarch_ptr_bit (get_type_arch (type
)) / TARGET_CHAR_BIT
;
350 TYPE_CODE (ntype
) = TYPE_CODE_PTR
;
352 /* Mark pointers as unsigned. The target converts between pointers
353 and addresses (CORE_ADDRs) using gdbarch_pointer_to_address and
354 gdbarch_address_to_pointer. */
355 TYPE_UNSIGNED (ntype
) = 1;
357 /* Update the length of all the other variants of this type. */
358 chain
= TYPE_CHAIN (ntype
);
359 while (chain
!= ntype
)
361 TYPE_LENGTH (chain
) = TYPE_LENGTH (ntype
);
362 chain
= TYPE_CHAIN (chain
);
368 /* Given a type TYPE, return a type of pointers to that type.
369 May need to construct such a type if this is the first use. */
372 lookup_pointer_type (struct type
*type
)
374 return make_pointer_type (type
, (struct type
**) 0);
377 /* Lookup a C++ `reference' to a type TYPE. TYPEPTR, if nonzero,
378 points to a pointer to memory where the reference type should be
379 stored. If *TYPEPTR is zero, update it to point to the reference
380 type we return. We allocate new memory if needed. */
383 make_reference_type (struct type
*type
, struct type
**typeptr
)
385 struct type
*ntype
; /* New type */
388 ntype
= TYPE_REFERENCE_TYPE (type
);
393 return ntype
; /* Don't care about alloc,
394 and have new type. */
395 else if (*typeptr
== 0)
397 *typeptr
= ntype
; /* Tracking alloc, and have new type. */
402 if (typeptr
== 0 || *typeptr
== 0) /* We'll need to allocate one. */
404 ntype
= alloc_type_copy (type
);
408 else /* We have storage, but need to reset it. */
411 chain
= TYPE_CHAIN (ntype
);
413 TYPE_CHAIN (ntype
) = chain
;
416 TYPE_TARGET_TYPE (ntype
) = type
;
417 TYPE_REFERENCE_TYPE (type
) = ntype
;
419 /* FIXME! Assume the machine has only one representation for
420 references, and that it matches the (only) representation for
423 TYPE_LENGTH (ntype
) =
424 gdbarch_ptr_bit (get_type_arch (type
)) / TARGET_CHAR_BIT
;
425 TYPE_CODE (ntype
) = TYPE_CODE_REF
;
427 if (!TYPE_REFERENCE_TYPE (type
)) /* Remember it, if don't have one. */
428 TYPE_REFERENCE_TYPE (type
) = ntype
;
430 /* Update the length of all the other variants of this type. */
431 chain
= TYPE_CHAIN (ntype
);
432 while (chain
!= ntype
)
434 TYPE_LENGTH (chain
) = TYPE_LENGTH (ntype
);
435 chain
= TYPE_CHAIN (chain
);
441 /* Same as above, but caller doesn't care about memory allocation
445 lookup_reference_type (struct type
*type
)
447 return make_reference_type (type
, (struct type
**) 0);
450 /* Lookup a function type that returns type TYPE. TYPEPTR, if
451 nonzero, points to a pointer to memory where the function type
452 should be stored. If *TYPEPTR is zero, update it to point to the
453 function type we return. We allocate new memory if needed. */
456 make_function_type (struct type
*type
, struct type
**typeptr
)
458 struct type
*ntype
; /* New type */
460 if (typeptr
== 0 || *typeptr
== 0) /* We'll need to allocate one. */
462 ntype
= alloc_type_copy (type
);
466 else /* We have storage, but need to reset it. */
472 TYPE_TARGET_TYPE (ntype
) = type
;
474 TYPE_LENGTH (ntype
) = 1;
475 TYPE_CODE (ntype
) = TYPE_CODE_FUNC
;
477 INIT_FUNC_SPECIFIC (ntype
);
482 /* Given a type TYPE, return a type of functions that return that type.
483 May need to construct such a type if this is the first use. */
486 lookup_function_type (struct type
*type
)
488 return make_function_type (type
, (struct type
**) 0);
491 /* Given a type TYPE and argument types, return the appropriate
492 function type. If the final type in PARAM_TYPES is NULL, make a
496 lookup_function_type_with_arguments (struct type
*type
,
498 struct type
**param_types
)
500 struct type
*fn
= make_function_type (type
, (struct type
**) 0);
505 if (param_types
[nparams
- 1] == NULL
)
508 TYPE_VARARGS (fn
) = 1;
510 else if (TYPE_CODE (check_typedef (param_types
[nparams
- 1]))
514 /* Caller should have ensured this. */
515 gdb_assert (nparams
== 0);
516 TYPE_PROTOTYPED (fn
) = 1;
520 TYPE_NFIELDS (fn
) = nparams
;
521 TYPE_FIELDS (fn
) = TYPE_ZALLOC (fn
, nparams
* sizeof (struct field
));
522 for (i
= 0; i
< nparams
; ++i
)
523 TYPE_FIELD_TYPE (fn
, i
) = param_types
[i
];
528 /* Identify address space identifier by name --
529 return the integer flag defined in gdbtypes.h. */
532 address_space_name_to_int (struct gdbarch
*gdbarch
, char *space_identifier
)
536 /* Check for known address space delimiters. */
537 if (!strcmp (space_identifier
, "code"))
538 return TYPE_INSTANCE_FLAG_CODE_SPACE
;
539 else if (!strcmp (space_identifier
, "data"))
540 return TYPE_INSTANCE_FLAG_DATA_SPACE
;
541 else if (gdbarch_address_class_name_to_type_flags_p (gdbarch
)
542 && gdbarch_address_class_name_to_type_flags (gdbarch
,
547 error (_("Unknown address space specifier: \"%s\""), space_identifier
);
550 /* Identify address space identifier by integer flag as defined in
551 gdbtypes.h -- return the string version of the adress space name. */
554 address_space_int_to_name (struct gdbarch
*gdbarch
, int space_flag
)
556 if (space_flag
& TYPE_INSTANCE_FLAG_CODE_SPACE
)
558 else if (space_flag
& TYPE_INSTANCE_FLAG_DATA_SPACE
)
560 else if ((space_flag
& TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL
)
561 && gdbarch_address_class_type_flags_to_name_p (gdbarch
))
562 return gdbarch_address_class_type_flags_to_name (gdbarch
, space_flag
);
567 /* Create a new type with instance flags NEW_FLAGS, based on TYPE.
569 If STORAGE is non-NULL, create the new type instance there.
570 STORAGE must be in the same obstack as TYPE. */
573 make_qualified_type (struct type
*type
, int new_flags
,
574 struct type
*storage
)
581 if (TYPE_INSTANCE_FLAGS (ntype
) == new_flags
)
583 ntype
= TYPE_CHAIN (ntype
);
585 while (ntype
!= type
);
587 /* Create a new type instance. */
589 ntype
= alloc_type_instance (type
);
592 /* If STORAGE was provided, it had better be in the same objfile
593 as TYPE. Otherwise, we can't link it into TYPE's cv chain:
594 if one objfile is freed and the other kept, we'd have
595 dangling pointers. */
596 gdb_assert (TYPE_OBJFILE (type
) == TYPE_OBJFILE (storage
));
599 TYPE_MAIN_TYPE (ntype
) = TYPE_MAIN_TYPE (type
);
600 TYPE_CHAIN (ntype
) = ntype
;
603 /* Pointers or references to the original type are not relevant to
605 TYPE_POINTER_TYPE (ntype
) = (struct type
*) 0;
606 TYPE_REFERENCE_TYPE (ntype
) = (struct type
*) 0;
608 /* Chain the new qualified type to the old type. */
609 TYPE_CHAIN (ntype
) = TYPE_CHAIN (type
);
610 TYPE_CHAIN (type
) = ntype
;
612 /* Now set the instance flags and return the new type. */
613 TYPE_INSTANCE_FLAGS (ntype
) = new_flags
;
615 /* Set length of new type to that of the original type. */
616 TYPE_LENGTH (ntype
) = TYPE_LENGTH (type
);
621 /* Make an address-space-delimited variant of a type -- a type that
622 is identical to the one supplied except that it has an address
623 space attribute attached to it (such as "code" or "data").
625 The space attributes "code" and "data" are for Harvard
626 architectures. The address space attributes are for architectures
627 which have alternately sized pointers or pointers with alternate
631 make_type_with_address_space (struct type
*type
, int space_flag
)
633 int new_flags
= ((TYPE_INSTANCE_FLAGS (type
)
634 & ~(TYPE_INSTANCE_FLAG_CODE_SPACE
635 | TYPE_INSTANCE_FLAG_DATA_SPACE
636 | TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL
))
639 return make_qualified_type (type
, new_flags
, NULL
);
642 /* Make a "c-v" variant of a type -- a type that is identical to the
643 one supplied except that it may have const or volatile attributes
644 CNST is a flag for setting the const attribute
645 VOLTL is a flag for setting the volatile attribute
646 TYPE is the base type whose variant we are creating.
648 If TYPEPTR and *TYPEPTR are non-zero, then *TYPEPTR points to
649 storage to hold the new qualified type; *TYPEPTR and TYPE must be
650 in the same objfile. Otherwise, allocate fresh memory for the new
651 type whereever TYPE lives. If TYPEPTR is non-zero, set it to the
652 new type we construct. */
655 make_cv_type (int cnst
, int voltl
,
657 struct type
**typeptr
)
659 struct type
*ntype
; /* New type */
661 int new_flags
= (TYPE_INSTANCE_FLAGS (type
)
662 & ~(TYPE_INSTANCE_FLAG_CONST
663 | TYPE_INSTANCE_FLAG_VOLATILE
));
666 new_flags
|= TYPE_INSTANCE_FLAG_CONST
;
669 new_flags
|= TYPE_INSTANCE_FLAG_VOLATILE
;
671 if (typeptr
&& *typeptr
!= NULL
)
673 /* TYPE and *TYPEPTR must be in the same objfile. We can't have
674 a C-V variant chain that threads across objfiles: if one
675 objfile gets freed, then the other has a broken C-V chain.
677 This code used to try to copy over the main type from TYPE to
678 *TYPEPTR if they were in different objfiles, but that's
679 wrong, too: TYPE may have a field list or member function
680 lists, which refer to types of their own, etc. etc. The
681 whole shebang would need to be copied over recursively; you
682 can't have inter-objfile pointers. The only thing to do is
683 to leave stub types as stub types, and look them up afresh by
684 name each time you encounter them. */
685 gdb_assert (TYPE_OBJFILE (*typeptr
) == TYPE_OBJFILE (type
));
688 ntype
= make_qualified_type (type
, new_flags
,
689 typeptr
? *typeptr
: NULL
);
697 /* Make a 'restrict'-qualified version of TYPE. */
700 make_restrict_type (struct type
*type
)
702 return make_qualified_type (type
,
703 (TYPE_INSTANCE_FLAGS (type
)
704 | TYPE_INSTANCE_FLAG_RESTRICT
),
708 /* Replace the contents of ntype with the type *type. This changes the
709 contents, rather than the pointer for TYPE_MAIN_TYPE (ntype); thus
710 the changes are propogated to all types in the TYPE_CHAIN.
712 In order to build recursive types, it's inevitable that we'll need
713 to update types in place --- but this sort of indiscriminate
714 smashing is ugly, and needs to be replaced with something more
715 controlled. TYPE_MAIN_TYPE is a step in this direction; it's not
716 clear if more steps are needed. */
719 replace_type (struct type
*ntype
, struct type
*type
)
723 /* These two types had better be in the same objfile. Otherwise,
724 the assignment of one type's main type structure to the other
725 will produce a type with references to objects (names; field
726 lists; etc.) allocated on an objfile other than its own. */
727 gdb_assert (TYPE_OBJFILE (ntype
) == TYPE_OBJFILE (ntype
));
729 *TYPE_MAIN_TYPE (ntype
) = *TYPE_MAIN_TYPE (type
);
731 /* The type length is not a part of the main type. Update it for
732 each type on the variant chain. */
736 /* Assert that this element of the chain has no address-class bits
737 set in its flags. Such type variants might have type lengths
738 which are supposed to be different from the non-address-class
739 variants. This assertion shouldn't ever be triggered because
740 symbol readers which do construct address-class variants don't
741 call replace_type(). */
742 gdb_assert (TYPE_ADDRESS_CLASS_ALL (chain
) == 0);
744 TYPE_LENGTH (chain
) = TYPE_LENGTH (type
);
745 chain
= TYPE_CHAIN (chain
);
747 while (ntype
!= chain
);
749 /* Assert that the two types have equivalent instance qualifiers.
750 This should be true for at least all of our debug readers. */
751 gdb_assert (TYPE_INSTANCE_FLAGS (ntype
) == TYPE_INSTANCE_FLAGS (type
));
754 /* Implement direct support for MEMBER_TYPE in GNU C++.
755 May need to construct such a type if this is the first use.
756 The TYPE is the type of the member. The DOMAIN is the type
757 of the aggregate that the member belongs to. */
760 lookup_memberptr_type (struct type
*type
, struct type
*domain
)
764 mtype
= alloc_type_copy (type
);
765 smash_to_memberptr_type (mtype
, domain
, type
);
769 /* Return a pointer-to-method type, for a method of type TO_TYPE. */
772 lookup_methodptr_type (struct type
*to_type
)
776 mtype
= alloc_type_copy (to_type
);
777 smash_to_methodptr_type (mtype
, to_type
);
781 /* Allocate a stub method whose return type is TYPE. This apparently
782 happens for speed of symbol reading, since parsing out the
783 arguments to the method is cpu-intensive, the way we are doing it.
784 So, we will fill in arguments later. This always returns a fresh
788 allocate_stub_method (struct type
*type
)
792 mtype
= alloc_type_copy (type
);
793 TYPE_CODE (mtype
) = TYPE_CODE_METHOD
;
794 TYPE_LENGTH (mtype
) = 1;
795 TYPE_STUB (mtype
) = 1;
796 TYPE_TARGET_TYPE (mtype
) = type
;
797 /* _DOMAIN_TYPE (mtype) = unknown yet */
801 /* Create a range type with a dynamic range from LOW_BOUND to
802 HIGH_BOUND, inclusive. See create_range_type for further details. */
805 create_range_type (struct type
*result_type
, struct type
*index_type
,
806 const struct dynamic_prop
*low_bound
,
807 const struct dynamic_prop
*high_bound
)
809 if (result_type
== NULL
)
810 result_type
= alloc_type_copy (index_type
);
811 TYPE_CODE (result_type
) = TYPE_CODE_RANGE
;
812 TYPE_TARGET_TYPE (result_type
) = index_type
;
813 if (TYPE_STUB (index_type
))
814 TYPE_TARGET_STUB (result_type
) = 1;
816 TYPE_LENGTH (result_type
) = TYPE_LENGTH (check_typedef (index_type
));
818 TYPE_RANGE_DATA (result_type
) = (struct range_bounds
*)
819 TYPE_ZALLOC (result_type
, sizeof (struct range_bounds
));
820 TYPE_RANGE_DATA (result_type
)->low
= *low_bound
;
821 TYPE_RANGE_DATA (result_type
)->high
= *high_bound
;
823 if (low_bound
->kind
== PROP_CONST
&& low_bound
->data
.const_val
>= 0)
824 TYPE_UNSIGNED (result_type
) = 1;
829 /* Create a range type using either a blank type supplied in
830 RESULT_TYPE, or creating a new type, inheriting the objfile from
833 Indices will be of type INDEX_TYPE, and will range from LOW_BOUND
834 to HIGH_BOUND, inclusive.
836 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
837 sure it is TYPE_CODE_UNDEF before we bash it into a range type? */
840 create_static_range_type (struct type
*result_type
, struct type
*index_type
,
841 LONGEST low_bound
, LONGEST high_bound
)
843 struct dynamic_prop low
, high
;
845 low
.kind
= PROP_CONST
;
846 low
.data
.const_val
= low_bound
;
848 high
.kind
= PROP_CONST
;
849 high
.data
.const_val
= high_bound
;
851 result_type
= create_range_type (result_type
, index_type
, &low
, &high
);
856 /* Set *LOWP and *HIGHP to the lower and upper bounds of discrete type
857 TYPE. Return 1 if type is a range type, 0 if it is discrete (and
858 bounds will fit in LONGEST), or -1 otherwise. */
861 get_discrete_bounds (struct type
*type
, LONGEST
*lowp
, LONGEST
*highp
)
863 CHECK_TYPEDEF (type
);
864 switch (TYPE_CODE (type
))
866 case TYPE_CODE_RANGE
:
867 *lowp
= TYPE_LOW_BOUND (type
);
868 *highp
= TYPE_HIGH_BOUND (type
);
871 if (TYPE_NFIELDS (type
) > 0)
873 /* The enums may not be sorted by value, so search all
877 *lowp
= *highp
= TYPE_FIELD_ENUMVAL (type
, 0);
878 for (i
= 0; i
< TYPE_NFIELDS (type
); i
++)
880 if (TYPE_FIELD_ENUMVAL (type
, i
) < *lowp
)
881 *lowp
= TYPE_FIELD_ENUMVAL (type
, i
);
882 if (TYPE_FIELD_ENUMVAL (type
, i
) > *highp
)
883 *highp
= TYPE_FIELD_ENUMVAL (type
, i
);
886 /* Set unsigned indicator if warranted. */
889 TYPE_UNSIGNED (type
) = 1;
903 if (TYPE_LENGTH (type
) > sizeof (LONGEST
)) /* Too big */
905 if (!TYPE_UNSIGNED (type
))
907 *lowp
= -(1 << (TYPE_LENGTH (type
) * TARGET_CHAR_BIT
- 1));
911 /* ... fall through for unsigned ints ... */
914 /* This round-about calculation is to avoid shifting by
915 TYPE_LENGTH (type) * TARGET_CHAR_BIT, which will not work
916 if TYPE_LENGTH (type) == sizeof (LONGEST). */
917 *highp
= 1 << (TYPE_LENGTH (type
) * TARGET_CHAR_BIT
- 1);
918 *highp
= (*highp
- 1) | *highp
;
925 /* Assuming TYPE is a simple, non-empty array type, compute its upper
926 and lower bound. Save the low bound into LOW_BOUND if not NULL.
927 Save the high bound into HIGH_BOUND if not NULL.
929 Return 1 if the operation was successful. Return zero otherwise,
930 in which case the values of LOW_BOUND and HIGH_BOUNDS are unmodified.
932 We now simply use get_discrete_bounds call to get the values
933 of the low and high bounds.
934 get_discrete_bounds can return three values:
935 1, meaning that index is a range,
936 0, meaning that index is a discrete type,
937 or -1 for failure. */
940 get_array_bounds (struct type
*type
, LONGEST
*low_bound
, LONGEST
*high_bound
)
942 struct type
*index
= TYPE_INDEX_TYPE (type
);
950 res
= get_discrete_bounds (index
, &low
, &high
);
954 /* Check if the array bounds are undefined. */
956 && ((low_bound
&& TYPE_ARRAY_LOWER_BOUND_IS_UNDEFINED (type
))
957 || (high_bound
&& TYPE_ARRAY_UPPER_BOUND_IS_UNDEFINED (type
))))
969 /* Create an array type using either a blank type supplied in
970 RESULT_TYPE, or creating a new type, inheriting the objfile from
973 Elements will be of type ELEMENT_TYPE, the indices will be of type
976 If BIT_STRIDE is not zero, build a packed array type whose element
977 size is BIT_STRIDE. Otherwise, ignore this parameter.
979 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
980 sure it is TYPE_CODE_UNDEF before we bash it into an array
984 create_array_type_with_stride (struct type
*result_type
,
985 struct type
*element_type
,
986 struct type
*range_type
,
987 unsigned int bit_stride
)
989 LONGEST low_bound
, high_bound
;
991 if (result_type
== NULL
)
992 result_type
= alloc_type_copy (range_type
);
994 TYPE_CODE (result_type
) = TYPE_CODE_ARRAY
;
995 TYPE_TARGET_TYPE (result_type
) = element_type
;
996 if (get_discrete_bounds (range_type
, &low_bound
, &high_bound
) < 0)
997 low_bound
= high_bound
= 0;
998 CHECK_TYPEDEF (element_type
);
999 /* Be careful when setting the array length. Ada arrays can be
1000 empty arrays with the high_bound being smaller than the low_bound.
1001 In such cases, the array length should be zero. */
1002 if (high_bound
< low_bound
)
1003 TYPE_LENGTH (result_type
) = 0;
1004 else if (bit_stride
> 0)
1005 TYPE_LENGTH (result_type
) =
1006 (bit_stride
* (high_bound
- low_bound
+ 1) + 7) / 8;
1008 TYPE_LENGTH (result_type
) =
1009 TYPE_LENGTH (element_type
) * (high_bound
- low_bound
+ 1);
1010 TYPE_NFIELDS (result_type
) = 1;
1011 TYPE_FIELDS (result_type
) =
1012 (struct field
*) TYPE_ZALLOC (result_type
, sizeof (struct field
));
1013 TYPE_INDEX_TYPE (result_type
) = range_type
;
1014 TYPE_VPTR_FIELDNO (result_type
) = -1;
1016 TYPE_FIELD_BITSIZE (result_type
, 0) = bit_stride
;
1018 /* TYPE_FLAG_TARGET_STUB will take care of zero length arrays. */
1019 if (TYPE_LENGTH (result_type
) == 0)
1020 TYPE_TARGET_STUB (result_type
) = 1;
1025 /* Same as create_array_type_with_stride but with no bit_stride
1026 (BIT_STRIDE = 0), thus building an unpacked array. */
1029 create_array_type (struct type
*result_type
,
1030 struct type
*element_type
,
1031 struct type
*range_type
)
1033 return create_array_type_with_stride (result_type
, element_type
,
1038 lookup_array_range_type (struct type
*element_type
,
1039 LONGEST low_bound
, LONGEST high_bound
)
1041 struct gdbarch
*gdbarch
= get_type_arch (element_type
);
1042 struct type
*index_type
= builtin_type (gdbarch
)->builtin_int
;
1043 struct type
*range_type
1044 = create_static_range_type (NULL
, index_type
, low_bound
, high_bound
);
1046 return create_array_type (NULL
, element_type
, range_type
);
1049 /* Create a string type using either a blank type supplied in
1050 RESULT_TYPE, or creating a new type. String types are similar
1051 enough to array of char types that we can use create_array_type to
1052 build the basic type and then bash it into a string type.
1054 For fixed length strings, the range type contains 0 as the lower
1055 bound and the length of the string minus one as the upper bound.
1057 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
1058 sure it is TYPE_CODE_UNDEF before we bash it into a string
1062 create_string_type (struct type
*result_type
,
1063 struct type
*string_char_type
,
1064 struct type
*range_type
)
1066 result_type
= create_array_type (result_type
,
1069 TYPE_CODE (result_type
) = TYPE_CODE_STRING
;
1074 lookup_string_range_type (struct type
*string_char_type
,
1075 LONGEST low_bound
, LONGEST high_bound
)
1077 struct type
*result_type
;
1079 result_type
= lookup_array_range_type (string_char_type
,
1080 low_bound
, high_bound
);
1081 TYPE_CODE (result_type
) = TYPE_CODE_STRING
;
1086 create_set_type (struct type
*result_type
, struct type
*domain_type
)
1088 if (result_type
== NULL
)
1089 result_type
= alloc_type_copy (domain_type
);
1091 TYPE_CODE (result_type
) = TYPE_CODE_SET
;
1092 TYPE_NFIELDS (result_type
) = 1;
1093 TYPE_FIELDS (result_type
) = TYPE_ZALLOC (result_type
, sizeof (struct field
));
1095 if (!TYPE_STUB (domain_type
))
1097 LONGEST low_bound
, high_bound
, bit_length
;
1099 if (get_discrete_bounds (domain_type
, &low_bound
, &high_bound
) < 0)
1100 low_bound
= high_bound
= 0;
1101 bit_length
= high_bound
- low_bound
+ 1;
1102 TYPE_LENGTH (result_type
)
1103 = (bit_length
+ TARGET_CHAR_BIT
- 1) / TARGET_CHAR_BIT
;
1105 TYPE_UNSIGNED (result_type
) = 1;
1107 TYPE_FIELD_TYPE (result_type
, 0) = domain_type
;
1112 /* Convert ARRAY_TYPE to a vector type. This may modify ARRAY_TYPE
1113 and any array types nested inside it. */
1116 make_vector_type (struct type
*array_type
)
1118 struct type
*inner_array
, *elt_type
;
1121 /* Find the innermost array type, in case the array is
1122 multi-dimensional. */
1123 inner_array
= array_type
;
1124 while (TYPE_CODE (TYPE_TARGET_TYPE (inner_array
)) == TYPE_CODE_ARRAY
)
1125 inner_array
= TYPE_TARGET_TYPE (inner_array
);
1127 elt_type
= TYPE_TARGET_TYPE (inner_array
);
1128 if (TYPE_CODE (elt_type
) == TYPE_CODE_INT
)
1130 flags
= TYPE_INSTANCE_FLAGS (elt_type
) | TYPE_INSTANCE_FLAG_NOTTEXT
;
1131 elt_type
= make_qualified_type (elt_type
, flags
, NULL
);
1132 TYPE_TARGET_TYPE (inner_array
) = elt_type
;
1135 TYPE_VECTOR (array_type
) = 1;
1139 init_vector_type (struct type
*elt_type
, int n
)
1141 struct type
*array_type
;
1143 array_type
= lookup_array_range_type (elt_type
, 0, n
- 1);
1144 make_vector_type (array_type
);
1148 /* Smash TYPE to be a type of pointers to members of DOMAIN with type
1149 TO_TYPE. A member pointer is a wierd thing -- it amounts to a
1150 typed offset into a struct, e.g. "an int at offset 8". A MEMBER
1151 TYPE doesn't include the offset (that's the value of the MEMBER
1152 itself), but does include the structure type into which it points
1155 When "smashing" the type, we preserve the objfile that the old type
1156 pointed to, since we aren't changing where the type is actually
1160 smash_to_memberptr_type (struct type
*type
, struct type
*domain
,
1161 struct type
*to_type
)
1164 TYPE_TARGET_TYPE (type
) = to_type
;
1165 TYPE_DOMAIN_TYPE (type
) = domain
;
1166 /* Assume that a data member pointer is the same size as a normal
1169 = gdbarch_ptr_bit (get_type_arch (to_type
)) / TARGET_CHAR_BIT
;
1170 TYPE_CODE (type
) = TYPE_CODE_MEMBERPTR
;
1173 /* Smash TYPE to be a type of pointer to methods type TO_TYPE.
1175 When "smashing" the type, we preserve the objfile that the old type
1176 pointed to, since we aren't changing where the type is actually
1180 smash_to_methodptr_type (struct type
*type
, struct type
*to_type
)
1183 TYPE_TARGET_TYPE (type
) = to_type
;
1184 TYPE_DOMAIN_TYPE (type
) = TYPE_DOMAIN_TYPE (to_type
);
1185 TYPE_LENGTH (type
) = cplus_method_ptr_size (to_type
);
1186 TYPE_CODE (type
) = TYPE_CODE_METHODPTR
;
1189 /* Smash TYPE to be a type of method of DOMAIN with type TO_TYPE.
1190 METHOD just means `function that gets an extra "this" argument'.
1192 When "smashing" the type, we preserve the objfile that the old type
1193 pointed to, since we aren't changing where the type is actually
1197 smash_to_method_type (struct type
*type
, struct type
*domain
,
1198 struct type
*to_type
, struct field
*args
,
1199 int nargs
, int varargs
)
1202 TYPE_TARGET_TYPE (type
) = to_type
;
1203 TYPE_DOMAIN_TYPE (type
) = domain
;
1204 TYPE_FIELDS (type
) = args
;
1205 TYPE_NFIELDS (type
) = nargs
;
1207 TYPE_VARARGS (type
) = 1;
1208 TYPE_LENGTH (type
) = 1; /* In practice, this is never needed. */
1209 TYPE_CODE (type
) = TYPE_CODE_METHOD
;
1212 /* Return a typename for a struct/union/enum type without "struct ",
1213 "union ", or "enum ". If the type has a NULL name, return NULL. */
1216 type_name_no_tag (const struct type
*type
)
1218 if (TYPE_TAG_NAME (type
) != NULL
)
1219 return TYPE_TAG_NAME (type
);
1221 /* Is there code which expects this to return the name if there is
1222 no tag name? My guess is that this is mainly used for C++ in
1223 cases where the two will always be the same. */
1224 return TYPE_NAME (type
);
1227 /* A wrapper of type_name_no_tag which calls error if the type is anonymous.
1228 Since GCC PR debug/47510 DWARF provides associated information to detect the
1229 anonymous class linkage name from its typedef.
1231 Parameter TYPE should not yet have CHECK_TYPEDEF applied, this function will
1235 type_name_no_tag_or_error (struct type
*type
)
1237 struct type
*saved_type
= type
;
1239 struct objfile
*objfile
;
1241 CHECK_TYPEDEF (type
);
1243 name
= type_name_no_tag (type
);
1247 name
= type_name_no_tag (saved_type
);
1248 objfile
= TYPE_OBJFILE (saved_type
);
1249 error (_("Invalid anonymous type %s [in module %s], GCC PR debug/47510 bug?"),
1250 name
? name
: "<anonymous>",
1251 objfile
? objfile_name (objfile
) : "<arch>");
1254 /* Lookup a typedef or primitive type named NAME, visible in lexical
1255 block BLOCK. If NOERR is nonzero, return zero if NAME is not
1256 suitably defined. */
1259 lookup_typename (const struct language_defn
*language
,
1260 struct gdbarch
*gdbarch
, const char *name
,
1261 const struct block
*block
, int noerr
)
1266 sym
= lookup_symbol (name
, block
, VAR_DOMAIN
, 0);
1267 if (sym
!= NULL
&& SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
1268 return SYMBOL_TYPE (sym
);
1270 type
= language_lookup_primitive_type_by_name (language
, gdbarch
, name
);
1276 error (_("No type named %s."), name
);
1280 lookup_unsigned_typename (const struct language_defn
*language
,
1281 struct gdbarch
*gdbarch
, const char *name
)
1283 char *uns
= alloca (strlen (name
) + 10);
1285 strcpy (uns
, "unsigned ");
1286 strcpy (uns
+ 9, name
);
1287 return lookup_typename (language
, gdbarch
, uns
, (struct block
*) NULL
, 0);
1291 lookup_signed_typename (const struct language_defn
*language
,
1292 struct gdbarch
*gdbarch
, const char *name
)
1295 char *uns
= alloca (strlen (name
) + 8);
1297 strcpy (uns
, "signed ");
1298 strcpy (uns
+ 7, name
);
1299 t
= lookup_typename (language
, gdbarch
, uns
, (struct block
*) NULL
, 1);
1300 /* If we don't find "signed FOO" just try again with plain "FOO". */
1303 return lookup_typename (language
, gdbarch
, name
, (struct block
*) NULL
, 0);
1306 /* Lookup a structure type named "struct NAME",
1307 visible in lexical block BLOCK. */
1310 lookup_struct (const char *name
, const struct block
*block
)
1314 sym
= lookup_symbol (name
, block
, STRUCT_DOMAIN
, 0);
1318 error (_("No struct type named %s."), name
);
1320 if (TYPE_CODE (SYMBOL_TYPE (sym
)) != TYPE_CODE_STRUCT
)
1322 error (_("This context has class, union or enum %s, not a struct."),
1325 return (SYMBOL_TYPE (sym
));
1328 /* Lookup a union type named "union NAME",
1329 visible in lexical block BLOCK. */
1332 lookup_union (const char *name
, const struct block
*block
)
1337 sym
= lookup_symbol (name
, block
, STRUCT_DOMAIN
, 0);
1340 error (_("No union type named %s."), name
);
1342 t
= SYMBOL_TYPE (sym
);
1344 if (TYPE_CODE (t
) == TYPE_CODE_UNION
)
1347 /* If we get here, it's not a union. */
1348 error (_("This context has class, struct or enum %s, not a union."),
1352 /* Lookup an enum type named "enum NAME",
1353 visible in lexical block BLOCK. */
1356 lookup_enum (const char *name
, const struct block
*block
)
1360 sym
= lookup_symbol (name
, block
, STRUCT_DOMAIN
, 0);
1363 error (_("No enum type named %s."), name
);
1365 if (TYPE_CODE (SYMBOL_TYPE (sym
)) != TYPE_CODE_ENUM
)
1367 error (_("This context has class, struct or union %s, not an enum."),
1370 return (SYMBOL_TYPE (sym
));
1373 /* Lookup a template type named "template NAME<TYPE>",
1374 visible in lexical block BLOCK. */
1377 lookup_template_type (char *name
, struct type
*type
,
1378 const struct block
*block
)
1381 char *nam
= (char *)
1382 alloca (strlen (name
) + strlen (TYPE_NAME (type
)) + 4);
1386 strcat (nam
, TYPE_NAME (type
));
1387 strcat (nam
, " >"); /* FIXME, extra space still introduced in gcc? */
1389 sym
= lookup_symbol (nam
, block
, VAR_DOMAIN
, 0);
1393 error (_("No template type named %s."), name
);
1395 if (TYPE_CODE (SYMBOL_TYPE (sym
)) != TYPE_CODE_STRUCT
)
1397 error (_("This context has class, union or enum %s, not a struct."),
1400 return (SYMBOL_TYPE (sym
));
1403 /* Given a type TYPE, lookup the type of the component of type named
1406 TYPE can be either a struct or union, or a pointer or reference to
1407 a struct or union. If it is a pointer or reference, its target
1408 type is automatically used. Thus '.' and '->' are interchangable,
1409 as specified for the definitions of the expression element types
1410 STRUCTOP_STRUCT and STRUCTOP_PTR.
1412 If NOERR is nonzero, return zero if NAME is not suitably defined.
1413 If NAME is the name of a baseclass type, return that type. */
1416 lookup_struct_elt_type (struct type
*type
, const char *name
, int noerr
)
1423 CHECK_TYPEDEF (type
);
1424 if (TYPE_CODE (type
) != TYPE_CODE_PTR
1425 && TYPE_CODE (type
) != TYPE_CODE_REF
)
1427 type
= TYPE_TARGET_TYPE (type
);
1430 if (TYPE_CODE (type
) != TYPE_CODE_STRUCT
1431 && TYPE_CODE (type
) != TYPE_CODE_UNION
)
1433 typename
= type_to_string (type
);
1434 make_cleanup (xfree
, typename
);
1435 error (_("Type %s is not a structure or union type."), typename
);
1439 /* FIXME: This change put in by Michael seems incorrect for the case
1440 where the structure tag name is the same as the member name.
1441 I.e. when doing "ptype bell->bar" for "struct foo { int bar; int
1442 foo; } bell;" Disabled by fnf. */
1446 typename
= type_name_no_tag (type
);
1447 if (typename
!= NULL
&& strcmp (typename
, name
) == 0)
1452 for (i
= TYPE_NFIELDS (type
) - 1; i
>= TYPE_N_BASECLASSES (type
); i
--)
1454 const char *t_field_name
= TYPE_FIELD_NAME (type
, i
);
1456 if (t_field_name
&& (strcmp_iw (t_field_name
, name
) == 0))
1458 return TYPE_FIELD_TYPE (type
, i
);
1460 else if (!t_field_name
|| *t_field_name
== '\0')
1462 struct type
*subtype
1463 = lookup_struct_elt_type (TYPE_FIELD_TYPE (type
, i
), name
, 1);
1465 if (subtype
!= NULL
)
1470 /* OK, it's not in this class. Recursively check the baseclasses. */
1471 for (i
= TYPE_N_BASECLASSES (type
) - 1; i
>= 0; i
--)
1475 t
= lookup_struct_elt_type (TYPE_BASECLASS (type
, i
), name
, 1);
1487 typename
= type_to_string (type
);
1488 make_cleanup (xfree
, typename
);
1489 error (_("Type %s has no component named %s."), typename
, name
);
1492 /* Store in *MAX the largest number representable by unsigned integer type
1496 get_unsigned_type_max (struct type
*type
, ULONGEST
*max
)
1500 CHECK_TYPEDEF (type
);
1501 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_INT
&& TYPE_UNSIGNED (type
));
1502 gdb_assert (TYPE_LENGTH (type
) <= sizeof (ULONGEST
));
1504 /* Written this way to avoid overflow. */
1505 n
= TYPE_LENGTH (type
) * TARGET_CHAR_BIT
;
1506 *max
= ((((ULONGEST
) 1 << (n
- 1)) - 1) << 1) | 1;
1509 /* Store in *MIN, *MAX the smallest and largest numbers representable by
1510 signed integer type TYPE. */
1513 get_signed_type_minmax (struct type
*type
, LONGEST
*min
, LONGEST
*max
)
1517 CHECK_TYPEDEF (type
);
1518 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_INT
&& !TYPE_UNSIGNED (type
));
1519 gdb_assert (TYPE_LENGTH (type
) <= sizeof (LONGEST
));
1521 n
= TYPE_LENGTH (type
) * TARGET_CHAR_BIT
;
1522 *min
= -((ULONGEST
) 1 << (n
- 1));
1523 *max
= ((ULONGEST
) 1 << (n
- 1)) - 1;
1526 /* Lookup the vptr basetype/fieldno values for TYPE.
1527 If found store vptr_basetype in *BASETYPEP if non-NULL, and return
1528 vptr_fieldno. Also, if found and basetype is from the same objfile,
1530 If not found, return -1 and ignore BASETYPEP.
1531 Callers should be aware that in some cases (for example,
1532 the type or one of its baseclasses is a stub type and we are
1533 debugging a .o file, or the compiler uses DWARF-2 and is not GCC),
1534 this function will not be able to find the
1535 virtual function table pointer, and vptr_fieldno will remain -1 and
1536 vptr_basetype will remain NULL or incomplete. */
1539 get_vptr_fieldno (struct type
*type
, struct type
**basetypep
)
1541 CHECK_TYPEDEF (type
);
1543 if (TYPE_VPTR_FIELDNO (type
) < 0)
1547 /* We must start at zero in case the first (and only) baseclass
1548 is virtual (and hence we cannot share the table pointer). */
1549 for (i
= 0; i
< TYPE_N_BASECLASSES (type
); i
++)
1551 struct type
*baseclass
= check_typedef (TYPE_BASECLASS (type
, i
));
1553 struct type
*basetype
;
1555 fieldno
= get_vptr_fieldno (baseclass
, &basetype
);
1558 /* If the type comes from a different objfile we can't cache
1559 it, it may have a different lifetime. PR 2384 */
1560 if (TYPE_OBJFILE (type
) == TYPE_OBJFILE (basetype
))
1562 TYPE_VPTR_FIELDNO (type
) = fieldno
;
1563 TYPE_VPTR_BASETYPE (type
) = basetype
;
1566 *basetypep
= basetype
;
1577 *basetypep
= TYPE_VPTR_BASETYPE (type
);
1578 return TYPE_VPTR_FIELDNO (type
);
1583 stub_noname_complaint (void)
1585 complaint (&symfile_complaints
, _("stub type has NULL name"));
1588 /* Find the real type of TYPE. This function returns the real type,
1589 after removing all layers of typedefs, and completing opaque or stub
1590 types. Completion changes the TYPE argument, but stripping of
1593 Instance flags (e.g. const/volatile) are preserved as typedefs are
1594 stripped. If necessary a new qualified form of the underlying type
1597 NOTE: This will return a typedef if TYPE_TARGET_TYPE for the typedef has
1598 not been computed and we're either in the middle of reading symbols, or
1599 there was no name for the typedef in the debug info.
1601 NOTE: Lookup of opaque types can throw errors for invalid symbol files.
1602 QUITs in the symbol reading code can also throw.
1603 Thus this function can throw an exception.
1605 If TYPE is a TYPE_CODE_TYPEDEF, its length is updated to the length of
1608 If this is a stubbed struct (i.e. declared as struct foo *), see if
1609 we can find a full definition in some other file. If so, copy this
1610 definition, so we can use it in future. There used to be a comment
1611 (but not any code) that if we don't find a full definition, we'd
1612 set a flag so we don't spend time in the future checking the same
1613 type. That would be a mistake, though--we might load in more
1614 symbols which contain a full definition for the type. */
1617 check_typedef (struct type
*type
)
1619 struct type
*orig_type
= type
;
1620 /* While we're removing typedefs, we don't want to lose qualifiers.
1621 E.g., const/volatile. */
1622 int instance_flags
= TYPE_INSTANCE_FLAGS (type
);
1626 while (TYPE_CODE (type
) == TYPE_CODE_TYPEDEF
)
1628 if (!TYPE_TARGET_TYPE (type
))
1633 /* It is dangerous to call lookup_symbol if we are currently
1634 reading a symtab. Infinite recursion is one danger. */
1635 if (currently_reading_symtab
)
1636 return make_qualified_type (type
, instance_flags
, NULL
);
1638 name
= type_name_no_tag (type
);
1639 /* FIXME: shouldn't we separately check the TYPE_NAME and
1640 the TYPE_TAG_NAME, and look in STRUCT_DOMAIN and/or
1641 VAR_DOMAIN as appropriate? (this code was written before
1642 TYPE_NAME and TYPE_TAG_NAME were separate). */
1645 stub_noname_complaint ();
1646 return make_qualified_type (type
, instance_flags
, NULL
);
1648 sym
= lookup_symbol (name
, 0, STRUCT_DOMAIN
, 0);
1650 TYPE_TARGET_TYPE (type
) = SYMBOL_TYPE (sym
);
1651 else /* TYPE_CODE_UNDEF */
1652 TYPE_TARGET_TYPE (type
) = alloc_type_arch (get_type_arch (type
));
1654 type
= TYPE_TARGET_TYPE (type
);
1656 /* Preserve the instance flags as we traverse down the typedef chain.
1658 Handling address spaces/classes is nasty, what do we do if there's a
1660 E.g., what if an outer typedef marks the type as class_1 and an inner
1661 typedef marks the type as class_2?
1662 This is the wrong place to do such error checking. We leave it to
1663 the code that created the typedef in the first place to flag the
1664 error. We just pick the outer address space (akin to letting the
1665 outer cast in a chain of casting win), instead of assuming
1666 "it can't happen". */
1668 const int ALL_SPACES
= (TYPE_INSTANCE_FLAG_CODE_SPACE
1669 | TYPE_INSTANCE_FLAG_DATA_SPACE
);
1670 const int ALL_CLASSES
= TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL
;
1671 int new_instance_flags
= TYPE_INSTANCE_FLAGS (type
);
1673 /* Treat code vs data spaces and address classes separately. */
1674 if ((instance_flags
& ALL_SPACES
) != 0)
1675 new_instance_flags
&= ~ALL_SPACES
;
1676 if ((instance_flags
& ALL_CLASSES
) != 0)
1677 new_instance_flags
&= ~ALL_CLASSES
;
1679 instance_flags
|= new_instance_flags
;
1683 /* If this is a struct/class/union with no fields, then check
1684 whether a full definition exists somewhere else. This is for
1685 systems where a type definition with no fields is issued for such
1686 types, instead of identifying them as stub types in the first
1689 if (TYPE_IS_OPAQUE (type
)
1690 && opaque_type_resolution
1691 && !currently_reading_symtab
)
1693 const char *name
= type_name_no_tag (type
);
1694 struct type
*newtype
;
1698 stub_noname_complaint ();
1699 return make_qualified_type (type
, instance_flags
, NULL
);
1701 newtype
= lookup_transparent_type (name
);
1705 /* If the resolved type and the stub are in the same
1706 objfile, then replace the stub type with the real deal.
1707 But if they're in separate objfiles, leave the stub
1708 alone; we'll just look up the transparent type every time
1709 we call check_typedef. We can't create pointers between
1710 types allocated to different objfiles, since they may
1711 have different lifetimes. Trying to copy NEWTYPE over to
1712 TYPE's objfile is pointless, too, since you'll have to
1713 move over any other types NEWTYPE refers to, which could
1714 be an unbounded amount of stuff. */
1715 if (TYPE_OBJFILE (newtype
) == TYPE_OBJFILE (type
))
1716 type
= make_qualified_type (newtype
,
1717 TYPE_INSTANCE_FLAGS (type
),
1723 /* Otherwise, rely on the stub flag being set for opaque/stubbed
1725 else if (TYPE_STUB (type
) && !currently_reading_symtab
)
1727 const char *name
= type_name_no_tag (type
);
1728 /* FIXME: shouldn't we separately check the TYPE_NAME and the
1729 TYPE_TAG_NAME, and look in STRUCT_DOMAIN and/or VAR_DOMAIN
1730 as appropriate? (this code was written before TYPE_NAME and
1731 TYPE_TAG_NAME were separate). */
1736 stub_noname_complaint ();
1737 return make_qualified_type (type
, instance_flags
, NULL
);
1739 sym
= lookup_symbol (name
, 0, STRUCT_DOMAIN
, 0);
1742 /* Same as above for opaque types, we can replace the stub
1743 with the complete type only if they are in the same
1745 if (TYPE_OBJFILE (SYMBOL_TYPE(sym
)) == TYPE_OBJFILE (type
))
1746 type
= make_qualified_type (SYMBOL_TYPE (sym
),
1747 TYPE_INSTANCE_FLAGS (type
),
1750 type
= SYMBOL_TYPE (sym
);
1754 if (TYPE_TARGET_STUB (type
))
1756 struct type
*range_type
;
1757 struct type
*target_type
= check_typedef (TYPE_TARGET_TYPE (type
));
1759 if (TYPE_STUB (target_type
) || TYPE_TARGET_STUB (target_type
))
1761 /* Nothing we can do. */
1763 else if (TYPE_CODE (type
) == TYPE_CODE_ARRAY
1764 && TYPE_NFIELDS (type
) == 1
1765 && (TYPE_CODE (range_type
= TYPE_INDEX_TYPE (type
))
1766 == TYPE_CODE_RANGE
))
1768 /* Now recompute the length of the array type, based on its
1769 number of elements and the target type's length.
1770 Watch out for Ada null Ada arrays where the high bound
1771 is smaller than the low bound. */
1772 const LONGEST low_bound
= TYPE_LOW_BOUND (range_type
);
1773 const LONGEST high_bound
= TYPE_HIGH_BOUND (range_type
);
1776 if (high_bound
< low_bound
)
1780 /* For now, we conservatively take the array length to be 0
1781 if its length exceeds UINT_MAX. The code below assumes
1782 that for x < 0, (ULONGEST) x == -x + ULONGEST_MAX + 1,
1783 which is technically not guaranteed by C, but is usually true
1784 (because it would be true if x were unsigned with its
1785 high-order bit on). It uses the fact that
1786 high_bound-low_bound is always representable in
1787 ULONGEST and that if high_bound-low_bound+1 overflows,
1788 it overflows to 0. We must change these tests if we
1789 decide to increase the representation of TYPE_LENGTH
1790 from unsigned int to ULONGEST. */
1791 ULONGEST ulow
= low_bound
, uhigh
= high_bound
;
1792 ULONGEST tlen
= TYPE_LENGTH (target_type
);
1794 len
= tlen
* (uhigh
- ulow
+ 1);
1795 if (tlen
== 0 || (len
/ tlen
- 1 + ulow
) != uhigh
1799 TYPE_LENGTH (type
) = len
;
1800 TYPE_TARGET_STUB (type
) = 0;
1802 else if (TYPE_CODE (type
) == TYPE_CODE_RANGE
)
1804 TYPE_LENGTH (type
) = TYPE_LENGTH (target_type
);
1805 TYPE_TARGET_STUB (type
) = 0;
1809 type
= make_qualified_type (type
, instance_flags
, NULL
);
1811 /* Cache TYPE_LENGTH for future use. */
1812 TYPE_LENGTH (orig_type
) = TYPE_LENGTH (type
);
1817 /* Parse a type expression in the string [P..P+LENGTH). If an error
1818 occurs, silently return a void type. */
1820 static struct type
*
1821 safe_parse_type (struct gdbarch
*gdbarch
, char *p
, int length
)
1823 struct ui_file
*saved_gdb_stderr
;
1824 struct type
*type
= NULL
; /* Initialize to keep gcc happy. */
1825 volatile struct gdb_exception except
;
1827 /* Suppress error messages. */
1828 saved_gdb_stderr
= gdb_stderr
;
1829 gdb_stderr
= ui_file_new ();
1831 /* Call parse_and_eval_type() without fear of longjmp()s. */
1832 TRY_CATCH (except
, RETURN_MASK_ERROR
)
1834 type
= parse_and_eval_type (p
, length
);
1837 if (except
.reason
< 0)
1838 type
= builtin_type (gdbarch
)->builtin_void
;
1840 /* Stop suppressing error messages. */
1841 ui_file_delete (gdb_stderr
);
1842 gdb_stderr
= saved_gdb_stderr
;
1847 /* Ugly hack to convert method stubs into method types.
1849 He ain't kiddin'. This demangles the name of the method into a
1850 string including argument types, parses out each argument type,
1851 generates a string casting a zero to that type, evaluates the
1852 string, and stuffs the resulting type into an argtype vector!!!
1853 Then it knows the type of the whole function (including argument
1854 types for overloading), which info used to be in the stab's but was
1855 removed to hack back the space required for them. */
1858 check_stub_method (struct type
*type
, int method_id
, int signature_id
)
1860 struct gdbarch
*gdbarch
= get_type_arch (type
);
1862 char *mangled_name
= gdb_mangle_name (type
, method_id
, signature_id
);
1863 char *demangled_name
= gdb_demangle (mangled_name
,
1864 DMGL_PARAMS
| DMGL_ANSI
);
1865 char *argtypetext
, *p
;
1866 int depth
= 0, argcount
= 1;
1867 struct field
*argtypes
;
1870 /* Make sure we got back a function string that we can use. */
1872 p
= strchr (demangled_name
, '(');
1876 if (demangled_name
== NULL
|| p
== NULL
)
1877 error (_("Internal: Cannot demangle mangled name `%s'."),
1880 /* Now, read in the parameters that define this type. */
1885 if (*p
== '(' || *p
== '<')
1889 else if (*p
== ')' || *p
== '>')
1893 else if (*p
== ',' && depth
== 0)
1901 /* If we read one argument and it was ``void'', don't count it. */
1902 if (strncmp (argtypetext
, "(void)", 6) == 0)
1905 /* We need one extra slot, for the THIS pointer. */
1907 argtypes
= (struct field
*)
1908 TYPE_ALLOC (type
, (argcount
+ 1) * sizeof (struct field
));
1911 /* Add THIS pointer for non-static methods. */
1912 f
= TYPE_FN_FIELDLIST1 (type
, method_id
);
1913 if (TYPE_FN_FIELD_STATIC_P (f
, signature_id
))
1917 argtypes
[0].type
= lookup_pointer_type (type
);
1921 if (*p
!= ')') /* () means no args, skip while. */
1926 if (depth
<= 0 && (*p
== ',' || *p
== ')'))
1928 /* Avoid parsing of ellipsis, they will be handled below.
1929 Also avoid ``void'' as above. */
1930 if (strncmp (argtypetext
, "...", p
- argtypetext
) != 0
1931 && strncmp (argtypetext
, "void", p
- argtypetext
) != 0)
1933 argtypes
[argcount
].type
=
1934 safe_parse_type (gdbarch
, argtypetext
, p
- argtypetext
);
1937 argtypetext
= p
+ 1;
1940 if (*p
== '(' || *p
== '<')
1944 else if (*p
== ')' || *p
== '>')
1953 TYPE_FN_FIELD_PHYSNAME (f
, signature_id
) = mangled_name
;
1955 /* Now update the old "stub" type into a real type. */
1956 mtype
= TYPE_FN_FIELD_TYPE (f
, signature_id
);
1957 TYPE_DOMAIN_TYPE (mtype
) = type
;
1958 TYPE_FIELDS (mtype
) = argtypes
;
1959 TYPE_NFIELDS (mtype
) = argcount
;
1960 TYPE_STUB (mtype
) = 0;
1961 TYPE_FN_FIELD_STUB (f
, signature_id
) = 0;
1963 TYPE_VARARGS (mtype
) = 1;
1965 xfree (demangled_name
);
1968 /* This is the external interface to check_stub_method, above. This
1969 function unstubs all of the signatures for TYPE's METHOD_ID method
1970 name. After calling this function TYPE_FN_FIELD_STUB will be
1971 cleared for each signature and TYPE_FN_FIELDLIST_NAME will be
1974 This function unfortunately can not die until stabs do. */
1977 check_stub_method_group (struct type
*type
, int method_id
)
1979 int len
= TYPE_FN_FIELDLIST_LENGTH (type
, method_id
);
1980 struct fn_field
*f
= TYPE_FN_FIELDLIST1 (type
, method_id
);
1981 int j
, found_stub
= 0;
1983 for (j
= 0; j
< len
; j
++)
1984 if (TYPE_FN_FIELD_STUB (f
, j
))
1987 check_stub_method (type
, method_id
, j
);
1990 /* GNU v3 methods with incorrect names were corrected when we read
1991 in type information, because it was cheaper to do it then. The
1992 only GNU v2 methods with incorrect method names are operators and
1993 destructors; destructors were also corrected when we read in type
1996 Therefore the only thing we need to handle here are v2 operator
1998 if (found_stub
&& strncmp (TYPE_FN_FIELD_PHYSNAME (f
, 0), "_Z", 2) != 0)
2001 char dem_opname
[256];
2003 ret
= cplus_demangle_opname (TYPE_FN_FIELDLIST_NAME (type
,
2005 dem_opname
, DMGL_ANSI
);
2007 ret
= cplus_demangle_opname (TYPE_FN_FIELDLIST_NAME (type
,
2011 TYPE_FN_FIELDLIST_NAME (type
, method_id
) = xstrdup (dem_opname
);
2015 /* Ensure it is in .rodata (if available) by workarounding GCC PR 44690. */
2016 const struct cplus_struct_type cplus_struct_default
= { };
2019 allocate_cplus_struct_type (struct type
*type
)
2021 if (HAVE_CPLUS_STRUCT (type
))
2022 /* Structure was already allocated. Nothing more to do. */
2025 TYPE_SPECIFIC_FIELD (type
) = TYPE_SPECIFIC_CPLUS_STUFF
;
2026 TYPE_RAW_CPLUS_SPECIFIC (type
) = (struct cplus_struct_type
*)
2027 TYPE_ALLOC (type
, sizeof (struct cplus_struct_type
));
2028 *(TYPE_RAW_CPLUS_SPECIFIC (type
)) = cplus_struct_default
;
2031 const struct gnat_aux_type gnat_aux_default
=
2034 /* Set the TYPE's type-specific kind to TYPE_SPECIFIC_GNAT_STUFF,
2035 and allocate the associated gnat-specific data. The gnat-specific
2036 data is also initialized to gnat_aux_default. */
2039 allocate_gnat_aux_type (struct type
*type
)
2041 TYPE_SPECIFIC_FIELD (type
) = TYPE_SPECIFIC_GNAT_STUFF
;
2042 TYPE_GNAT_SPECIFIC (type
) = (struct gnat_aux_type
*)
2043 TYPE_ALLOC (type
, sizeof (struct gnat_aux_type
));
2044 *(TYPE_GNAT_SPECIFIC (type
)) = gnat_aux_default
;
2047 /* Helper function to initialize the standard scalar types.
2049 If NAME is non-NULL, then it is used to initialize the type name.
2050 Note that NAME is not copied; it is required to have a lifetime at
2051 least as long as OBJFILE. */
2054 init_type (enum type_code code
, int length
, int flags
,
2055 const char *name
, struct objfile
*objfile
)
2059 type
= alloc_type (objfile
);
2060 TYPE_CODE (type
) = code
;
2061 TYPE_LENGTH (type
) = length
;
2063 gdb_assert (!(flags
& (TYPE_FLAG_MIN
- 1)));
2064 if (flags
& TYPE_FLAG_UNSIGNED
)
2065 TYPE_UNSIGNED (type
) = 1;
2066 if (flags
& TYPE_FLAG_NOSIGN
)
2067 TYPE_NOSIGN (type
) = 1;
2068 if (flags
& TYPE_FLAG_STUB
)
2069 TYPE_STUB (type
) = 1;
2070 if (flags
& TYPE_FLAG_TARGET_STUB
)
2071 TYPE_TARGET_STUB (type
) = 1;
2072 if (flags
& TYPE_FLAG_STATIC
)
2073 TYPE_STATIC (type
) = 1;
2074 if (flags
& TYPE_FLAG_PROTOTYPED
)
2075 TYPE_PROTOTYPED (type
) = 1;
2076 if (flags
& TYPE_FLAG_INCOMPLETE
)
2077 TYPE_INCOMPLETE (type
) = 1;
2078 if (flags
& TYPE_FLAG_VARARGS
)
2079 TYPE_VARARGS (type
) = 1;
2080 if (flags
& TYPE_FLAG_VECTOR
)
2081 TYPE_VECTOR (type
) = 1;
2082 if (flags
& TYPE_FLAG_STUB_SUPPORTED
)
2083 TYPE_STUB_SUPPORTED (type
) = 1;
2084 if (flags
& TYPE_FLAG_FIXED_INSTANCE
)
2085 TYPE_FIXED_INSTANCE (type
) = 1;
2086 if (flags
& TYPE_FLAG_GNU_IFUNC
)
2087 TYPE_GNU_IFUNC (type
) = 1;
2089 TYPE_NAME (type
) = name
;
2093 if (name
&& strcmp (name
, "char") == 0)
2094 TYPE_NOSIGN (type
) = 1;
2098 case TYPE_CODE_STRUCT
:
2099 case TYPE_CODE_UNION
:
2100 case TYPE_CODE_NAMESPACE
:
2101 INIT_CPLUS_SPECIFIC (type
);
2104 TYPE_SPECIFIC_FIELD (type
) = TYPE_SPECIFIC_FLOATFORMAT
;
2106 case TYPE_CODE_FUNC
:
2107 INIT_FUNC_SPECIFIC (type
);
2113 /* Queries on types. */
2116 can_dereference (struct type
*t
)
2118 /* FIXME: Should we return true for references as well as
2123 && TYPE_CODE (t
) == TYPE_CODE_PTR
2124 && TYPE_CODE (TYPE_TARGET_TYPE (t
)) != TYPE_CODE_VOID
);
2128 is_integral_type (struct type
*t
)
2133 && ((TYPE_CODE (t
) == TYPE_CODE_INT
)
2134 || (TYPE_CODE (t
) == TYPE_CODE_ENUM
)
2135 || (TYPE_CODE (t
) == TYPE_CODE_FLAGS
)
2136 || (TYPE_CODE (t
) == TYPE_CODE_CHAR
)
2137 || (TYPE_CODE (t
) == TYPE_CODE_RANGE
)
2138 || (TYPE_CODE (t
) == TYPE_CODE_BOOL
)));
2141 /* Return true if TYPE is scalar. */
2144 is_scalar_type (struct type
*type
)
2146 CHECK_TYPEDEF (type
);
2148 switch (TYPE_CODE (type
))
2150 case TYPE_CODE_ARRAY
:
2151 case TYPE_CODE_STRUCT
:
2152 case TYPE_CODE_UNION
:
2154 case TYPE_CODE_STRING
:
2161 /* Return true if T is scalar, or a composite type which in practice has
2162 the memory layout of a scalar type. E.g., an array or struct with only
2163 one scalar element inside it, or a union with only scalar elements. */
2166 is_scalar_type_recursive (struct type
*t
)
2170 if (is_scalar_type (t
))
2172 /* Are we dealing with an array or string of known dimensions? */
2173 else if ((TYPE_CODE (t
) == TYPE_CODE_ARRAY
2174 || TYPE_CODE (t
) == TYPE_CODE_STRING
) && TYPE_NFIELDS (t
) == 1
2175 && TYPE_CODE (TYPE_INDEX_TYPE (t
)) == TYPE_CODE_RANGE
)
2177 LONGEST low_bound
, high_bound
;
2178 struct type
*elt_type
= check_typedef (TYPE_TARGET_TYPE (t
));
2180 get_discrete_bounds (TYPE_INDEX_TYPE (t
), &low_bound
, &high_bound
);
2182 return high_bound
== low_bound
&& is_scalar_type_recursive (elt_type
);
2184 /* Are we dealing with a struct with one element? */
2185 else if (TYPE_CODE (t
) == TYPE_CODE_STRUCT
&& TYPE_NFIELDS (t
) == 1)
2186 return is_scalar_type_recursive (TYPE_FIELD_TYPE (t
, 0));
2187 else if (TYPE_CODE (t
) == TYPE_CODE_UNION
)
2189 int i
, n
= TYPE_NFIELDS (t
);
2191 /* If all elements of the union are scalar, then the union is scalar. */
2192 for (i
= 0; i
< n
; i
++)
2193 if (!is_scalar_type_recursive (TYPE_FIELD_TYPE (t
, i
)))
2202 /* A helper function which returns true if types A and B represent the
2203 "same" class type. This is true if the types have the same main
2204 type, or the same name. */
2207 class_types_same_p (const struct type
*a
, const struct type
*b
)
2209 return (TYPE_MAIN_TYPE (a
) == TYPE_MAIN_TYPE (b
)
2210 || (TYPE_NAME (a
) && TYPE_NAME (b
)
2211 && !strcmp (TYPE_NAME (a
), TYPE_NAME (b
))));
2214 /* If BASE is an ancestor of DCLASS return the distance between them.
2215 otherwise return -1;
2219 class B: public A {};
2220 class C: public B {};
2223 distance_to_ancestor (A, A, 0) = 0
2224 distance_to_ancestor (A, B, 0) = 1
2225 distance_to_ancestor (A, C, 0) = 2
2226 distance_to_ancestor (A, D, 0) = 3
2228 If PUBLIC is 1 then only public ancestors are considered,
2229 and the function returns the distance only if BASE is a public ancestor
2233 distance_to_ancestor (A, D, 1) = -1. */
2236 distance_to_ancestor (struct type
*base
, struct type
*dclass
, int public)
2241 CHECK_TYPEDEF (base
);
2242 CHECK_TYPEDEF (dclass
);
2244 if (class_types_same_p (base
, dclass
))
2247 for (i
= 0; i
< TYPE_N_BASECLASSES (dclass
); i
++)
2249 if (public && ! BASETYPE_VIA_PUBLIC (dclass
, i
))
2252 d
= distance_to_ancestor (base
, TYPE_BASECLASS (dclass
, i
), public);
2260 /* Check whether BASE is an ancestor or base class or DCLASS
2261 Return 1 if so, and 0 if not.
2262 Note: If BASE and DCLASS are of the same type, this function
2263 will return 1. So for some class A, is_ancestor (A, A) will
2267 is_ancestor (struct type
*base
, struct type
*dclass
)
2269 return distance_to_ancestor (base
, dclass
, 0) >= 0;
2272 /* Like is_ancestor, but only returns true when BASE is a public
2273 ancestor of DCLASS. */
2276 is_public_ancestor (struct type
*base
, struct type
*dclass
)
2278 return distance_to_ancestor (base
, dclass
, 1) >= 0;
2281 /* A helper function for is_unique_ancestor. */
2284 is_unique_ancestor_worker (struct type
*base
, struct type
*dclass
,
2286 const gdb_byte
*valaddr
, int embedded_offset
,
2287 CORE_ADDR address
, struct value
*val
)
2291 CHECK_TYPEDEF (base
);
2292 CHECK_TYPEDEF (dclass
);
2294 for (i
= 0; i
< TYPE_N_BASECLASSES (dclass
) && count
< 2; ++i
)
2299 iter
= check_typedef (TYPE_BASECLASS (dclass
, i
));
2301 this_offset
= baseclass_offset (dclass
, i
, valaddr
, embedded_offset
,
2304 if (class_types_same_p (base
, iter
))
2306 /* If this is the first subclass, set *OFFSET and set count
2307 to 1. Otherwise, if this is at the same offset as
2308 previous instances, do nothing. Otherwise, increment
2312 *offset
= this_offset
;
2315 else if (this_offset
== *offset
)
2323 count
+= is_unique_ancestor_worker (base
, iter
, offset
,
2325 embedded_offset
+ this_offset
,
2332 /* Like is_ancestor, but only returns true if BASE is a unique base
2333 class of the type of VAL. */
2336 is_unique_ancestor (struct type
*base
, struct value
*val
)
2340 return is_unique_ancestor_worker (base
, value_type (val
), &offset
,
2341 value_contents_for_printing (val
),
2342 value_embedded_offset (val
),
2343 value_address (val
), val
) == 1;
2347 /* Overload resolution. */
2349 /* Return the sum of the rank of A with the rank of B. */
2352 sum_ranks (struct rank a
, struct rank b
)
2355 c
.rank
= a
.rank
+ b
.rank
;
2356 c
.subrank
= a
.subrank
+ b
.subrank
;
2360 /* Compare rank A and B and return:
2362 1 if a is better than b
2363 -1 if b is better than a. */
2366 compare_ranks (struct rank a
, struct rank b
)
2368 if (a
.rank
== b
.rank
)
2370 if (a
.subrank
== b
.subrank
)
2372 if (a
.subrank
< b
.subrank
)
2374 if (a
.subrank
> b
.subrank
)
2378 if (a
.rank
< b
.rank
)
2381 /* a.rank > b.rank */
2385 /* Functions for overload resolution begin here. */
2387 /* Compare two badness vectors A and B and return the result.
2388 0 => A and B are identical
2389 1 => A and B are incomparable
2390 2 => A is better than B
2391 3 => A is worse than B */
2394 compare_badness (struct badness_vector
*a
, struct badness_vector
*b
)
2398 short found_pos
= 0; /* any positives in c? */
2399 short found_neg
= 0; /* any negatives in c? */
2401 /* differing lengths => incomparable */
2402 if (a
->length
!= b
->length
)
2405 /* Subtract b from a */
2406 for (i
= 0; i
< a
->length
; i
++)
2408 tmp
= compare_ranks (b
->rank
[i
], a
->rank
[i
]);
2418 return 1; /* incomparable */
2420 return 3; /* A > B */
2426 return 2; /* A < B */
2428 return 0; /* A == B */
2432 /* Rank a function by comparing its parameter types (PARMS, length
2433 NPARMS), to the types of an argument list (ARGS, length NARGS).
2434 Return a pointer to a badness vector. This has NARGS + 1
2437 struct badness_vector
*
2438 rank_function (struct type
**parms
, int nparms
,
2439 struct value
**args
, int nargs
)
2442 struct badness_vector
*bv
;
2443 int min_len
= nparms
< nargs
? nparms
: nargs
;
2445 bv
= xmalloc (sizeof (struct badness_vector
));
2446 bv
->length
= nargs
+ 1; /* add 1 for the length-match rank. */
2447 bv
->rank
= xmalloc ((nargs
+ 1) * sizeof (int));
2449 /* First compare the lengths of the supplied lists.
2450 If there is a mismatch, set it to a high value. */
2452 /* pai/1997-06-03 FIXME: when we have debug info about default
2453 arguments and ellipsis parameter lists, we should consider those
2454 and rank the length-match more finely. */
2456 LENGTH_MATCH (bv
) = (nargs
!= nparms
)
2457 ? LENGTH_MISMATCH_BADNESS
2458 : EXACT_MATCH_BADNESS
;
2460 /* Now rank all the parameters of the candidate function. */
2461 for (i
= 1; i
<= min_len
; i
++)
2462 bv
->rank
[i
] = rank_one_type (parms
[i
- 1], value_type (args
[i
- 1]),
2465 /* If more arguments than parameters, add dummy entries. */
2466 for (i
= min_len
+ 1; i
<= nargs
; i
++)
2467 bv
->rank
[i
] = TOO_FEW_PARAMS_BADNESS
;
2472 /* Compare the names of two integer types, assuming that any sign
2473 qualifiers have been checked already. We do it this way because
2474 there may be an "int" in the name of one of the types. */
2477 integer_types_same_name_p (const char *first
, const char *second
)
2479 int first_p
, second_p
;
2481 /* If both are shorts, return 1; if neither is a short, keep
2483 first_p
= (strstr (first
, "short") != NULL
);
2484 second_p
= (strstr (second
, "short") != NULL
);
2485 if (first_p
&& second_p
)
2487 if (first_p
|| second_p
)
2490 /* Likewise for long. */
2491 first_p
= (strstr (first
, "long") != NULL
);
2492 second_p
= (strstr (second
, "long") != NULL
);
2493 if (first_p
&& second_p
)
2495 if (first_p
|| second_p
)
2498 /* Likewise for char. */
2499 first_p
= (strstr (first
, "char") != NULL
);
2500 second_p
= (strstr (second
, "char") != NULL
);
2501 if (first_p
&& second_p
)
2503 if (first_p
|| second_p
)
2506 /* They must both be ints. */
2510 /* Compares type A to type B returns 1 if the represent the same type
2514 types_equal (struct type
*a
, struct type
*b
)
2516 /* Identical type pointers. */
2517 /* However, this still doesn't catch all cases of same type for b
2518 and a. The reason is that builtin types are different from
2519 the same ones constructed from the object. */
2523 /* Resolve typedefs */
2524 if (TYPE_CODE (a
) == TYPE_CODE_TYPEDEF
)
2525 a
= check_typedef (a
);
2526 if (TYPE_CODE (b
) == TYPE_CODE_TYPEDEF
)
2527 b
= check_typedef (b
);
2529 /* If after resolving typedefs a and b are not of the same type
2530 code then they are not equal. */
2531 if (TYPE_CODE (a
) != TYPE_CODE (b
))
2534 /* If a and b are both pointers types or both reference types then
2535 they are equal of the same type iff the objects they refer to are
2536 of the same type. */
2537 if (TYPE_CODE (a
) == TYPE_CODE_PTR
2538 || TYPE_CODE (a
) == TYPE_CODE_REF
)
2539 return types_equal (TYPE_TARGET_TYPE (a
),
2540 TYPE_TARGET_TYPE (b
));
2542 /* Well, damnit, if the names are exactly the same, I'll say they
2543 are exactly the same. This happens when we generate method
2544 stubs. The types won't point to the same address, but they
2545 really are the same. */
2547 if (TYPE_NAME (a
) && TYPE_NAME (b
)
2548 && strcmp (TYPE_NAME (a
), TYPE_NAME (b
)) == 0)
2551 /* Check if identical after resolving typedefs. */
2555 /* Two function types are equal if their argument and return types
2557 if (TYPE_CODE (a
) == TYPE_CODE_FUNC
)
2561 if (TYPE_NFIELDS (a
) != TYPE_NFIELDS (b
))
2564 if (!types_equal (TYPE_TARGET_TYPE (a
), TYPE_TARGET_TYPE (b
)))
2567 for (i
= 0; i
< TYPE_NFIELDS (a
); ++i
)
2568 if (!types_equal (TYPE_FIELD_TYPE (a
, i
), TYPE_FIELD_TYPE (b
, i
)))
2577 /* Deep comparison of types. */
2579 /* An entry in the type-equality bcache. */
2581 typedef struct type_equality_entry
2583 struct type
*type1
, *type2
;
2584 } type_equality_entry_d
;
2586 DEF_VEC_O (type_equality_entry_d
);
2588 /* A helper function to compare two strings. Returns 1 if they are
2589 the same, 0 otherwise. Handles NULLs properly. */
2592 compare_maybe_null_strings (const char *s
, const char *t
)
2594 if (s
== NULL
&& t
!= NULL
)
2596 else if (s
!= NULL
&& t
== NULL
)
2598 else if (s
== NULL
&& t
== NULL
)
2600 return strcmp (s
, t
) == 0;
2603 /* A helper function for check_types_worklist that checks two types for
2604 "deep" equality. Returns non-zero if the types are considered the
2605 same, zero otherwise. */
2608 check_types_equal (struct type
*type1
, struct type
*type2
,
2609 VEC (type_equality_entry_d
) **worklist
)
2611 CHECK_TYPEDEF (type1
);
2612 CHECK_TYPEDEF (type2
);
2617 if (TYPE_CODE (type1
) != TYPE_CODE (type2
)
2618 || TYPE_LENGTH (type1
) != TYPE_LENGTH (type2
)
2619 || TYPE_UNSIGNED (type1
) != TYPE_UNSIGNED (type2
)
2620 || TYPE_NOSIGN (type1
) != TYPE_NOSIGN (type2
)
2621 || TYPE_VARARGS (type1
) != TYPE_VARARGS (type2
)
2622 || TYPE_VECTOR (type1
) != TYPE_VECTOR (type2
)
2623 || TYPE_NOTTEXT (type1
) != TYPE_NOTTEXT (type2
)
2624 || TYPE_INSTANCE_FLAGS (type1
) != TYPE_INSTANCE_FLAGS (type2
)
2625 || TYPE_NFIELDS (type1
) != TYPE_NFIELDS (type2
))
2628 if (!compare_maybe_null_strings (TYPE_TAG_NAME (type1
),
2629 TYPE_TAG_NAME (type2
)))
2631 if (!compare_maybe_null_strings (TYPE_NAME (type1
), TYPE_NAME (type2
)))
2634 if (TYPE_CODE (type1
) == TYPE_CODE_RANGE
)
2636 if (memcmp (TYPE_RANGE_DATA (type1
), TYPE_RANGE_DATA (type2
),
2637 sizeof (*TYPE_RANGE_DATA (type1
))) != 0)
2644 for (i
= 0; i
< TYPE_NFIELDS (type1
); ++i
)
2646 const struct field
*field1
= &TYPE_FIELD (type1
, i
);
2647 const struct field
*field2
= &TYPE_FIELD (type2
, i
);
2648 struct type_equality_entry entry
;
2650 if (FIELD_ARTIFICIAL (*field1
) != FIELD_ARTIFICIAL (*field2
)
2651 || FIELD_BITSIZE (*field1
) != FIELD_BITSIZE (*field2
)
2652 || FIELD_LOC_KIND (*field1
) != FIELD_LOC_KIND (*field2
))
2654 if (!compare_maybe_null_strings (FIELD_NAME (*field1
),
2655 FIELD_NAME (*field2
)))
2657 switch (FIELD_LOC_KIND (*field1
))
2659 case FIELD_LOC_KIND_BITPOS
:
2660 if (FIELD_BITPOS (*field1
) != FIELD_BITPOS (*field2
))
2663 case FIELD_LOC_KIND_ENUMVAL
:
2664 if (FIELD_ENUMVAL (*field1
) != FIELD_ENUMVAL (*field2
))
2667 case FIELD_LOC_KIND_PHYSADDR
:
2668 if (FIELD_STATIC_PHYSADDR (*field1
)
2669 != FIELD_STATIC_PHYSADDR (*field2
))
2672 case FIELD_LOC_KIND_PHYSNAME
:
2673 if (!compare_maybe_null_strings (FIELD_STATIC_PHYSNAME (*field1
),
2674 FIELD_STATIC_PHYSNAME (*field2
)))
2677 case FIELD_LOC_KIND_DWARF_BLOCK
:
2679 struct dwarf2_locexpr_baton
*block1
, *block2
;
2681 block1
= FIELD_DWARF_BLOCK (*field1
);
2682 block2
= FIELD_DWARF_BLOCK (*field2
);
2683 if (block1
->per_cu
!= block2
->per_cu
2684 || block1
->size
!= block2
->size
2685 || memcmp (block1
->data
, block2
->data
, block1
->size
) != 0)
2690 internal_error (__FILE__
, __LINE__
, _("Unsupported field kind "
2691 "%d by check_types_equal"),
2692 FIELD_LOC_KIND (*field1
));
2695 entry
.type1
= FIELD_TYPE (*field1
);
2696 entry
.type2
= FIELD_TYPE (*field2
);
2697 VEC_safe_push (type_equality_entry_d
, *worklist
, &entry
);
2701 if (TYPE_TARGET_TYPE (type1
) != NULL
)
2703 struct type_equality_entry entry
;
2705 if (TYPE_TARGET_TYPE (type2
) == NULL
)
2708 entry
.type1
= TYPE_TARGET_TYPE (type1
);
2709 entry
.type2
= TYPE_TARGET_TYPE (type2
);
2710 VEC_safe_push (type_equality_entry_d
, *worklist
, &entry
);
2712 else if (TYPE_TARGET_TYPE (type2
) != NULL
)
2718 /* Check types on a worklist for equality. Returns zero if any pair
2719 is not equal, non-zero if they are all considered equal. */
2722 check_types_worklist (VEC (type_equality_entry_d
) **worklist
,
2723 struct bcache
*cache
)
2725 while (!VEC_empty (type_equality_entry_d
, *worklist
))
2727 struct type_equality_entry entry
;
2730 entry
= *VEC_last (type_equality_entry_d
, *worklist
);
2731 VEC_pop (type_equality_entry_d
, *worklist
);
2733 /* If the type pair has already been visited, we know it is
2735 bcache_full (&entry
, sizeof (entry
), cache
, &added
);
2739 if (check_types_equal (entry
.type1
, entry
.type2
, worklist
) == 0)
2746 /* Return non-zero if types TYPE1 and TYPE2 are equal, as determined by a
2747 "deep comparison". Otherwise return zero. */
2750 types_deeply_equal (struct type
*type1
, struct type
*type2
)
2752 volatile struct gdb_exception except
;
2754 struct bcache
*cache
;
2755 VEC (type_equality_entry_d
) *worklist
= NULL
;
2756 struct type_equality_entry entry
;
2758 gdb_assert (type1
!= NULL
&& type2
!= NULL
);
2760 /* Early exit for the simple case. */
2764 cache
= bcache_xmalloc (NULL
, NULL
);
2766 entry
.type1
= type1
;
2767 entry
.type2
= type2
;
2768 VEC_safe_push (type_equality_entry_d
, worklist
, &entry
);
2770 TRY_CATCH (except
, RETURN_MASK_ALL
)
2772 result
= check_types_worklist (&worklist
, cache
);
2774 /* check_types_worklist calls several nested helper functions,
2775 some of which can raise a GDB Exception, so we just check
2776 and rethrow here. If there is a GDB exception, a comparison
2777 is not capable (or trusted), so exit. */
2778 bcache_xfree (cache
);
2779 VEC_free (type_equality_entry_d
, worklist
);
2780 /* Rethrow if there was a problem. */
2781 if (except
.reason
< 0)
2782 throw_exception (except
);
2787 /* Compare one type (PARM) for compatibility with another (ARG).
2788 * PARM is intended to be the parameter type of a function; and
2789 * ARG is the supplied argument's type. This function tests if
2790 * the latter can be converted to the former.
2791 * VALUE is the argument's value or NULL if none (or called recursively)
2793 * Return 0 if they are identical types;
2794 * Otherwise, return an integer which corresponds to how compatible
2795 * PARM is to ARG. The higher the return value, the worse the match.
2796 * Generally the "bad" conversions are all uniformly assigned a 100. */
2799 rank_one_type (struct type
*parm
, struct type
*arg
, struct value
*value
)
2801 struct rank rank
= {0,0};
2803 if (types_equal (parm
, arg
))
2804 return EXACT_MATCH_BADNESS
;
2806 /* Resolve typedefs */
2807 if (TYPE_CODE (parm
) == TYPE_CODE_TYPEDEF
)
2808 parm
= check_typedef (parm
);
2809 if (TYPE_CODE (arg
) == TYPE_CODE_TYPEDEF
)
2810 arg
= check_typedef (arg
);
2812 /* See through references, since we can almost make non-references
2814 if (TYPE_CODE (arg
) == TYPE_CODE_REF
)
2815 return (sum_ranks (rank_one_type (parm
, TYPE_TARGET_TYPE (arg
), NULL
),
2816 REFERENCE_CONVERSION_BADNESS
));
2817 if (TYPE_CODE (parm
) == TYPE_CODE_REF
)
2818 return (sum_ranks (rank_one_type (TYPE_TARGET_TYPE (parm
), arg
, NULL
),
2819 REFERENCE_CONVERSION_BADNESS
));
2821 /* Debugging only. */
2822 fprintf_filtered (gdb_stderr
,
2823 "------ Arg is %s [%d], parm is %s [%d]\n",
2824 TYPE_NAME (arg
), TYPE_CODE (arg
),
2825 TYPE_NAME (parm
), TYPE_CODE (parm
));
2827 /* x -> y means arg of type x being supplied for parameter of type y. */
2829 switch (TYPE_CODE (parm
))
2832 switch (TYPE_CODE (arg
))
2836 /* Allowed pointer conversions are:
2837 (a) pointer to void-pointer conversion. */
2838 if (TYPE_CODE (TYPE_TARGET_TYPE (parm
)) == TYPE_CODE_VOID
)
2839 return VOID_PTR_CONVERSION_BADNESS
;
2841 /* (b) pointer to ancestor-pointer conversion. */
2842 rank
.subrank
= distance_to_ancestor (TYPE_TARGET_TYPE (parm
),
2843 TYPE_TARGET_TYPE (arg
),
2845 if (rank
.subrank
>= 0)
2846 return sum_ranks (BASE_PTR_CONVERSION_BADNESS
, rank
);
2848 return INCOMPATIBLE_TYPE_BADNESS
;
2849 case TYPE_CODE_ARRAY
:
2850 if (types_equal (TYPE_TARGET_TYPE (parm
),
2851 TYPE_TARGET_TYPE (arg
)))
2852 return EXACT_MATCH_BADNESS
;
2853 return INCOMPATIBLE_TYPE_BADNESS
;
2854 case TYPE_CODE_FUNC
:
2855 return rank_one_type (TYPE_TARGET_TYPE (parm
), arg
, NULL
);
2857 if (value
!= NULL
&& TYPE_CODE (value_type (value
)) == TYPE_CODE_INT
)
2859 if (value_as_long (value
) == 0)
2861 /* Null pointer conversion: allow it to be cast to a pointer.
2862 [4.10.1 of C++ standard draft n3290] */
2863 return NULL_POINTER_CONVERSION_BADNESS
;
2867 /* If type checking is disabled, allow the conversion. */
2868 if (!strict_type_checking
)
2869 return NS_INTEGER_POINTER_CONVERSION_BADNESS
;
2873 case TYPE_CODE_ENUM
:
2874 case TYPE_CODE_FLAGS
:
2875 case TYPE_CODE_CHAR
:
2876 case TYPE_CODE_RANGE
:
2877 case TYPE_CODE_BOOL
:
2879 return INCOMPATIBLE_TYPE_BADNESS
;
2881 case TYPE_CODE_ARRAY
:
2882 switch (TYPE_CODE (arg
))
2885 case TYPE_CODE_ARRAY
:
2886 return rank_one_type (TYPE_TARGET_TYPE (parm
),
2887 TYPE_TARGET_TYPE (arg
), NULL
);
2889 return INCOMPATIBLE_TYPE_BADNESS
;
2891 case TYPE_CODE_FUNC
:
2892 switch (TYPE_CODE (arg
))
2894 case TYPE_CODE_PTR
: /* funcptr -> func */
2895 return rank_one_type (parm
, TYPE_TARGET_TYPE (arg
), NULL
);
2897 return INCOMPATIBLE_TYPE_BADNESS
;
2900 switch (TYPE_CODE (arg
))
2903 if (TYPE_LENGTH (arg
) == TYPE_LENGTH (parm
))
2905 /* Deal with signed, unsigned, and plain chars and
2906 signed and unsigned ints. */
2907 if (TYPE_NOSIGN (parm
))
2909 /* This case only for character types. */
2910 if (TYPE_NOSIGN (arg
))
2911 return EXACT_MATCH_BADNESS
; /* plain char -> plain char */
2912 else /* signed/unsigned char -> plain char */
2913 return INTEGER_CONVERSION_BADNESS
;
2915 else if (TYPE_UNSIGNED (parm
))
2917 if (TYPE_UNSIGNED (arg
))
2919 /* unsigned int -> unsigned int, or
2920 unsigned long -> unsigned long */
2921 if (integer_types_same_name_p (TYPE_NAME (parm
),
2923 return EXACT_MATCH_BADNESS
;
2924 else if (integer_types_same_name_p (TYPE_NAME (arg
),
2926 && integer_types_same_name_p (TYPE_NAME (parm
),
2928 /* unsigned int -> unsigned long */
2929 return INTEGER_PROMOTION_BADNESS
;
2931 /* unsigned long -> unsigned int */
2932 return INTEGER_CONVERSION_BADNESS
;
2936 if (integer_types_same_name_p (TYPE_NAME (arg
),
2938 && integer_types_same_name_p (TYPE_NAME (parm
),
2940 /* signed long -> unsigned int */
2941 return INTEGER_CONVERSION_BADNESS
;
2943 /* signed int/long -> unsigned int/long */
2944 return INTEGER_CONVERSION_BADNESS
;
2947 else if (!TYPE_NOSIGN (arg
) && !TYPE_UNSIGNED (arg
))
2949 if (integer_types_same_name_p (TYPE_NAME (parm
),
2951 return EXACT_MATCH_BADNESS
;
2952 else if (integer_types_same_name_p (TYPE_NAME (arg
),
2954 && integer_types_same_name_p (TYPE_NAME (parm
),
2956 return INTEGER_PROMOTION_BADNESS
;
2958 return INTEGER_CONVERSION_BADNESS
;
2961 return INTEGER_CONVERSION_BADNESS
;
2963 else if (TYPE_LENGTH (arg
) < TYPE_LENGTH (parm
))
2964 return INTEGER_PROMOTION_BADNESS
;
2966 return INTEGER_CONVERSION_BADNESS
;
2967 case TYPE_CODE_ENUM
:
2968 case TYPE_CODE_FLAGS
:
2969 case TYPE_CODE_CHAR
:
2970 case TYPE_CODE_RANGE
:
2971 case TYPE_CODE_BOOL
:
2972 return INTEGER_PROMOTION_BADNESS
;
2974 return INT_FLOAT_CONVERSION_BADNESS
;
2976 return NS_POINTER_CONVERSION_BADNESS
;
2978 return INCOMPATIBLE_TYPE_BADNESS
;
2981 case TYPE_CODE_ENUM
:
2982 switch (TYPE_CODE (arg
))
2985 case TYPE_CODE_CHAR
:
2986 case TYPE_CODE_RANGE
:
2987 case TYPE_CODE_BOOL
:
2988 case TYPE_CODE_ENUM
:
2989 return INTEGER_CONVERSION_BADNESS
;
2991 return INT_FLOAT_CONVERSION_BADNESS
;
2993 return INCOMPATIBLE_TYPE_BADNESS
;
2996 case TYPE_CODE_CHAR
:
2997 switch (TYPE_CODE (arg
))
2999 case TYPE_CODE_RANGE
:
3000 case TYPE_CODE_BOOL
:
3001 case TYPE_CODE_ENUM
:
3002 return INTEGER_CONVERSION_BADNESS
;
3004 return INT_FLOAT_CONVERSION_BADNESS
;
3006 if (TYPE_LENGTH (arg
) > TYPE_LENGTH (parm
))
3007 return INTEGER_CONVERSION_BADNESS
;
3008 else if (TYPE_LENGTH (arg
) < TYPE_LENGTH (parm
))
3009 return INTEGER_PROMOTION_BADNESS
;
3010 /* >>> !! else fall through !! <<< */
3011 case TYPE_CODE_CHAR
:
3012 /* Deal with signed, unsigned, and plain chars for C++ and
3013 with int cases falling through from previous case. */
3014 if (TYPE_NOSIGN (parm
))
3016 if (TYPE_NOSIGN (arg
))
3017 return EXACT_MATCH_BADNESS
;
3019 return INTEGER_CONVERSION_BADNESS
;
3021 else if (TYPE_UNSIGNED (parm
))
3023 if (TYPE_UNSIGNED (arg
))
3024 return EXACT_MATCH_BADNESS
;
3026 return INTEGER_PROMOTION_BADNESS
;
3028 else if (!TYPE_NOSIGN (arg
) && !TYPE_UNSIGNED (arg
))
3029 return EXACT_MATCH_BADNESS
;
3031 return INTEGER_CONVERSION_BADNESS
;
3033 return INCOMPATIBLE_TYPE_BADNESS
;
3036 case TYPE_CODE_RANGE
:
3037 switch (TYPE_CODE (arg
))
3040 case TYPE_CODE_CHAR
:
3041 case TYPE_CODE_RANGE
:
3042 case TYPE_CODE_BOOL
:
3043 case TYPE_CODE_ENUM
:
3044 return INTEGER_CONVERSION_BADNESS
;
3046 return INT_FLOAT_CONVERSION_BADNESS
;
3048 return INCOMPATIBLE_TYPE_BADNESS
;
3051 case TYPE_CODE_BOOL
:
3052 switch (TYPE_CODE (arg
))
3054 /* n3290 draft, section 4.12.1 (conv.bool):
3056 "A prvalue of arithmetic, unscoped enumeration, pointer, or
3057 pointer to member type can be converted to a prvalue of type
3058 bool. A zero value, null pointer value, or null member pointer
3059 value is converted to false; any other value is converted to
3060 true. A prvalue of type std::nullptr_t can be converted to a
3061 prvalue of type bool; the resulting value is false." */
3063 case TYPE_CODE_CHAR
:
3064 case TYPE_CODE_ENUM
:
3066 case TYPE_CODE_MEMBERPTR
:
3068 return BOOL_CONVERSION_BADNESS
;
3069 case TYPE_CODE_RANGE
:
3070 return INCOMPATIBLE_TYPE_BADNESS
;
3071 case TYPE_CODE_BOOL
:
3072 return EXACT_MATCH_BADNESS
;
3074 return INCOMPATIBLE_TYPE_BADNESS
;
3078 switch (TYPE_CODE (arg
))
3081 if (TYPE_LENGTH (arg
) < TYPE_LENGTH (parm
))
3082 return FLOAT_PROMOTION_BADNESS
;
3083 else if (TYPE_LENGTH (arg
) == TYPE_LENGTH (parm
))
3084 return EXACT_MATCH_BADNESS
;
3086 return FLOAT_CONVERSION_BADNESS
;
3088 case TYPE_CODE_BOOL
:
3089 case TYPE_CODE_ENUM
:
3090 case TYPE_CODE_RANGE
:
3091 case TYPE_CODE_CHAR
:
3092 return INT_FLOAT_CONVERSION_BADNESS
;
3094 return INCOMPATIBLE_TYPE_BADNESS
;
3097 case TYPE_CODE_COMPLEX
:
3098 switch (TYPE_CODE (arg
))
3099 { /* Strictly not needed for C++, but... */
3101 return FLOAT_PROMOTION_BADNESS
;
3102 case TYPE_CODE_COMPLEX
:
3103 return EXACT_MATCH_BADNESS
;
3105 return INCOMPATIBLE_TYPE_BADNESS
;
3108 case TYPE_CODE_STRUCT
:
3109 /* currently same as TYPE_CODE_CLASS. */
3110 switch (TYPE_CODE (arg
))
3112 case TYPE_CODE_STRUCT
:
3113 /* Check for derivation */
3114 rank
.subrank
= distance_to_ancestor (parm
, arg
, 0);
3115 if (rank
.subrank
>= 0)
3116 return sum_ranks (BASE_CONVERSION_BADNESS
, rank
);
3117 /* else fall through */
3119 return INCOMPATIBLE_TYPE_BADNESS
;
3122 case TYPE_CODE_UNION
:
3123 switch (TYPE_CODE (arg
))
3125 case TYPE_CODE_UNION
:
3127 return INCOMPATIBLE_TYPE_BADNESS
;
3130 case TYPE_CODE_MEMBERPTR
:
3131 switch (TYPE_CODE (arg
))
3134 return INCOMPATIBLE_TYPE_BADNESS
;
3137 case TYPE_CODE_METHOD
:
3138 switch (TYPE_CODE (arg
))
3142 return INCOMPATIBLE_TYPE_BADNESS
;
3146 switch (TYPE_CODE (arg
))
3150 return INCOMPATIBLE_TYPE_BADNESS
;
3155 switch (TYPE_CODE (arg
))
3159 return rank_one_type (TYPE_FIELD_TYPE (parm
, 0),
3160 TYPE_FIELD_TYPE (arg
, 0), NULL
);
3162 return INCOMPATIBLE_TYPE_BADNESS
;
3165 case TYPE_CODE_VOID
:
3167 return INCOMPATIBLE_TYPE_BADNESS
;
3168 } /* switch (TYPE_CODE (arg)) */
3171 /* End of functions for overload resolution. */
3173 /* Routines to pretty-print types. */
3176 print_bit_vector (B_TYPE
*bits
, int nbits
)
3180 for (bitno
= 0; bitno
< nbits
; bitno
++)
3182 if ((bitno
% 8) == 0)
3184 puts_filtered (" ");
3186 if (B_TST (bits
, bitno
))
3187 printf_filtered (("1"));
3189 printf_filtered (("0"));
3193 /* Note the first arg should be the "this" pointer, we may not want to
3194 include it since we may get into a infinitely recursive
3198 print_arg_types (struct field
*args
, int nargs
, int spaces
)
3204 for (i
= 0; i
< nargs
; i
++)
3205 recursive_dump_type (args
[i
].type
, spaces
+ 2);
3210 field_is_static (struct field
*f
)
3212 /* "static" fields are the fields whose location is not relative
3213 to the address of the enclosing struct. It would be nice to
3214 have a dedicated flag that would be set for static fields when
3215 the type is being created. But in practice, checking the field
3216 loc_kind should give us an accurate answer. */
3217 return (FIELD_LOC_KIND (*f
) == FIELD_LOC_KIND_PHYSNAME
3218 || FIELD_LOC_KIND (*f
) == FIELD_LOC_KIND_PHYSADDR
);
3222 dump_fn_fieldlists (struct type
*type
, int spaces
)
3228 printfi_filtered (spaces
, "fn_fieldlists ");
3229 gdb_print_host_address (TYPE_FN_FIELDLISTS (type
), gdb_stdout
);
3230 printf_filtered ("\n");
3231 for (method_idx
= 0; method_idx
< TYPE_NFN_FIELDS (type
); method_idx
++)
3233 f
= TYPE_FN_FIELDLIST1 (type
, method_idx
);
3234 printfi_filtered (spaces
+ 2, "[%d] name '%s' (",
3236 TYPE_FN_FIELDLIST_NAME (type
, method_idx
));
3237 gdb_print_host_address (TYPE_FN_FIELDLIST_NAME (type
, method_idx
),
3239 printf_filtered (_(") length %d\n"),
3240 TYPE_FN_FIELDLIST_LENGTH (type
, method_idx
));
3241 for (overload_idx
= 0;
3242 overload_idx
< TYPE_FN_FIELDLIST_LENGTH (type
, method_idx
);
3245 printfi_filtered (spaces
+ 4, "[%d] physname '%s' (",
3247 TYPE_FN_FIELD_PHYSNAME (f
, overload_idx
));
3248 gdb_print_host_address (TYPE_FN_FIELD_PHYSNAME (f
, overload_idx
),
3250 printf_filtered (")\n");
3251 printfi_filtered (spaces
+ 8, "type ");
3252 gdb_print_host_address (TYPE_FN_FIELD_TYPE (f
, overload_idx
),
3254 printf_filtered ("\n");
3256 recursive_dump_type (TYPE_FN_FIELD_TYPE (f
, overload_idx
),
3259 printfi_filtered (spaces
+ 8, "args ");
3260 gdb_print_host_address (TYPE_FN_FIELD_ARGS (f
, overload_idx
),
3262 printf_filtered ("\n");
3264 print_arg_types (TYPE_FN_FIELD_ARGS (f
, overload_idx
),
3265 TYPE_NFIELDS (TYPE_FN_FIELD_TYPE (f
,
3268 printfi_filtered (spaces
+ 8, "fcontext ");
3269 gdb_print_host_address (TYPE_FN_FIELD_FCONTEXT (f
, overload_idx
),
3271 printf_filtered ("\n");
3273 printfi_filtered (spaces
+ 8, "is_const %d\n",
3274 TYPE_FN_FIELD_CONST (f
, overload_idx
));
3275 printfi_filtered (spaces
+ 8, "is_volatile %d\n",
3276 TYPE_FN_FIELD_VOLATILE (f
, overload_idx
));
3277 printfi_filtered (spaces
+ 8, "is_private %d\n",
3278 TYPE_FN_FIELD_PRIVATE (f
, overload_idx
));
3279 printfi_filtered (spaces
+ 8, "is_protected %d\n",
3280 TYPE_FN_FIELD_PROTECTED (f
, overload_idx
));
3281 printfi_filtered (spaces
+ 8, "is_stub %d\n",
3282 TYPE_FN_FIELD_STUB (f
, overload_idx
));
3283 printfi_filtered (spaces
+ 8, "voffset %u\n",
3284 TYPE_FN_FIELD_VOFFSET (f
, overload_idx
));
3290 print_cplus_stuff (struct type
*type
, int spaces
)
3292 printfi_filtered (spaces
, "n_baseclasses %d\n",
3293 TYPE_N_BASECLASSES (type
));
3294 printfi_filtered (spaces
, "nfn_fields %d\n",
3295 TYPE_NFN_FIELDS (type
));
3296 if (TYPE_N_BASECLASSES (type
) > 0)
3298 printfi_filtered (spaces
, "virtual_field_bits (%d bits at *",
3299 TYPE_N_BASECLASSES (type
));
3300 gdb_print_host_address (TYPE_FIELD_VIRTUAL_BITS (type
),
3302 printf_filtered (")");
3304 print_bit_vector (TYPE_FIELD_VIRTUAL_BITS (type
),
3305 TYPE_N_BASECLASSES (type
));
3306 puts_filtered ("\n");
3308 if (TYPE_NFIELDS (type
) > 0)
3310 if (TYPE_FIELD_PRIVATE_BITS (type
) != NULL
)
3312 printfi_filtered (spaces
,
3313 "private_field_bits (%d bits at *",
3314 TYPE_NFIELDS (type
));
3315 gdb_print_host_address (TYPE_FIELD_PRIVATE_BITS (type
),
3317 printf_filtered (")");
3318 print_bit_vector (TYPE_FIELD_PRIVATE_BITS (type
),
3319 TYPE_NFIELDS (type
));
3320 puts_filtered ("\n");
3322 if (TYPE_FIELD_PROTECTED_BITS (type
) != NULL
)
3324 printfi_filtered (spaces
,
3325 "protected_field_bits (%d bits at *",
3326 TYPE_NFIELDS (type
));
3327 gdb_print_host_address (TYPE_FIELD_PROTECTED_BITS (type
),
3329 printf_filtered (")");
3330 print_bit_vector (TYPE_FIELD_PROTECTED_BITS (type
),
3331 TYPE_NFIELDS (type
));
3332 puts_filtered ("\n");
3335 if (TYPE_NFN_FIELDS (type
) > 0)
3337 dump_fn_fieldlists (type
, spaces
);
3341 /* Print the contents of the TYPE's type_specific union, assuming that
3342 its type-specific kind is TYPE_SPECIFIC_GNAT_STUFF. */
3345 print_gnat_stuff (struct type
*type
, int spaces
)
3347 struct type
*descriptive_type
= TYPE_DESCRIPTIVE_TYPE (type
);
3349 recursive_dump_type (descriptive_type
, spaces
+ 2);
3352 static struct obstack dont_print_type_obstack
;
3355 recursive_dump_type (struct type
*type
, int spaces
)
3360 obstack_begin (&dont_print_type_obstack
, 0);
3362 if (TYPE_NFIELDS (type
) > 0
3363 || (HAVE_CPLUS_STRUCT (type
) && TYPE_NFN_FIELDS (type
) > 0))
3365 struct type
**first_dont_print
3366 = (struct type
**) obstack_base (&dont_print_type_obstack
);
3368 int i
= (struct type
**)
3369 obstack_next_free (&dont_print_type_obstack
) - first_dont_print
;
3373 if (type
== first_dont_print
[i
])
3375 printfi_filtered (spaces
, "type node ");
3376 gdb_print_host_address (type
, gdb_stdout
);
3377 printf_filtered (_(" <same as already seen type>\n"));
3382 obstack_ptr_grow (&dont_print_type_obstack
, type
);
3385 printfi_filtered (spaces
, "type node ");
3386 gdb_print_host_address (type
, gdb_stdout
);
3387 printf_filtered ("\n");
3388 printfi_filtered (spaces
, "name '%s' (",
3389 TYPE_NAME (type
) ? TYPE_NAME (type
) : "<NULL>");
3390 gdb_print_host_address (TYPE_NAME (type
), gdb_stdout
);
3391 printf_filtered (")\n");
3392 printfi_filtered (spaces
, "tagname '%s' (",
3393 TYPE_TAG_NAME (type
) ? TYPE_TAG_NAME (type
) : "<NULL>");
3394 gdb_print_host_address (TYPE_TAG_NAME (type
), gdb_stdout
);
3395 printf_filtered (")\n");
3396 printfi_filtered (spaces
, "code 0x%x ", TYPE_CODE (type
));
3397 switch (TYPE_CODE (type
))
3399 case TYPE_CODE_UNDEF
:
3400 printf_filtered ("(TYPE_CODE_UNDEF)");
3403 printf_filtered ("(TYPE_CODE_PTR)");
3405 case TYPE_CODE_ARRAY
:
3406 printf_filtered ("(TYPE_CODE_ARRAY)");
3408 case TYPE_CODE_STRUCT
:
3409 printf_filtered ("(TYPE_CODE_STRUCT)");
3411 case TYPE_CODE_UNION
:
3412 printf_filtered ("(TYPE_CODE_UNION)");
3414 case TYPE_CODE_ENUM
:
3415 printf_filtered ("(TYPE_CODE_ENUM)");
3417 case TYPE_CODE_FLAGS
:
3418 printf_filtered ("(TYPE_CODE_FLAGS)");
3420 case TYPE_CODE_FUNC
:
3421 printf_filtered ("(TYPE_CODE_FUNC)");
3424 printf_filtered ("(TYPE_CODE_INT)");
3427 printf_filtered ("(TYPE_CODE_FLT)");
3429 case TYPE_CODE_VOID
:
3430 printf_filtered ("(TYPE_CODE_VOID)");
3433 printf_filtered ("(TYPE_CODE_SET)");
3435 case TYPE_CODE_RANGE
:
3436 printf_filtered ("(TYPE_CODE_RANGE)");
3438 case TYPE_CODE_STRING
:
3439 printf_filtered ("(TYPE_CODE_STRING)");
3441 case TYPE_CODE_ERROR
:
3442 printf_filtered ("(TYPE_CODE_ERROR)");
3444 case TYPE_CODE_MEMBERPTR
:
3445 printf_filtered ("(TYPE_CODE_MEMBERPTR)");
3447 case TYPE_CODE_METHODPTR
:
3448 printf_filtered ("(TYPE_CODE_METHODPTR)");
3450 case TYPE_CODE_METHOD
:
3451 printf_filtered ("(TYPE_CODE_METHOD)");
3454 printf_filtered ("(TYPE_CODE_REF)");
3456 case TYPE_CODE_CHAR
:
3457 printf_filtered ("(TYPE_CODE_CHAR)");
3459 case TYPE_CODE_BOOL
:
3460 printf_filtered ("(TYPE_CODE_BOOL)");
3462 case TYPE_CODE_COMPLEX
:
3463 printf_filtered ("(TYPE_CODE_COMPLEX)");
3465 case TYPE_CODE_TYPEDEF
:
3466 printf_filtered ("(TYPE_CODE_TYPEDEF)");
3468 case TYPE_CODE_NAMESPACE
:
3469 printf_filtered ("(TYPE_CODE_NAMESPACE)");
3472 printf_filtered ("(UNKNOWN TYPE CODE)");
3475 puts_filtered ("\n");
3476 printfi_filtered (spaces
, "length %d\n", TYPE_LENGTH (type
));
3477 if (TYPE_OBJFILE_OWNED (type
))
3479 printfi_filtered (spaces
, "objfile ");
3480 gdb_print_host_address (TYPE_OWNER (type
).objfile
, gdb_stdout
);
3484 printfi_filtered (spaces
, "gdbarch ");
3485 gdb_print_host_address (TYPE_OWNER (type
).gdbarch
, gdb_stdout
);
3487 printf_filtered ("\n");
3488 printfi_filtered (spaces
, "target_type ");
3489 gdb_print_host_address (TYPE_TARGET_TYPE (type
), gdb_stdout
);
3490 printf_filtered ("\n");
3491 if (TYPE_TARGET_TYPE (type
) != NULL
)
3493 recursive_dump_type (TYPE_TARGET_TYPE (type
), spaces
+ 2);
3495 printfi_filtered (spaces
, "pointer_type ");
3496 gdb_print_host_address (TYPE_POINTER_TYPE (type
), gdb_stdout
);
3497 printf_filtered ("\n");
3498 printfi_filtered (spaces
, "reference_type ");
3499 gdb_print_host_address (TYPE_REFERENCE_TYPE (type
), gdb_stdout
);
3500 printf_filtered ("\n");
3501 printfi_filtered (spaces
, "type_chain ");
3502 gdb_print_host_address (TYPE_CHAIN (type
), gdb_stdout
);
3503 printf_filtered ("\n");
3504 printfi_filtered (spaces
, "instance_flags 0x%x",
3505 TYPE_INSTANCE_FLAGS (type
));
3506 if (TYPE_CONST (type
))
3508 puts_filtered (" TYPE_FLAG_CONST");
3510 if (TYPE_VOLATILE (type
))
3512 puts_filtered (" TYPE_FLAG_VOLATILE");
3514 if (TYPE_CODE_SPACE (type
))
3516 puts_filtered (" TYPE_FLAG_CODE_SPACE");
3518 if (TYPE_DATA_SPACE (type
))
3520 puts_filtered (" TYPE_FLAG_DATA_SPACE");
3522 if (TYPE_ADDRESS_CLASS_1 (type
))
3524 puts_filtered (" TYPE_FLAG_ADDRESS_CLASS_1");
3526 if (TYPE_ADDRESS_CLASS_2 (type
))
3528 puts_filtered (" TYPE_FLAG_ADDRESS_CLASS_2");
3530 if (TYPE_RESTRICT (type
))
3532 puts_filtered (" TYPE_FLAG_RESTRICT");
3534 puts_filtered ("\n");
3536 printfi_filtered (spaces
, "flags");
3537 if (TYPE_UNSIGNED (type
))
3539 puts_filtered (" TYPE_FLAG_UNSIGNED");
3541 if (TYPE_NOSIGN (type
))
3543 puts_filtered (" TYPE_FLAG_NOSIGN");
3545 if (TYPE_STUB (type
))
3547 puts_filtered (" TYPE_FLAG_STUB");
3549 if (TYPE_TARGET_STUB (type
))
3551 puts_filtered (" TYPE_FLAG_TARGET_STUB");
3553 if (TYPE_STATIC (type
))
3555 puts_filtered (" TYPE_FLAG_STATIC");
3557 if (TYPE_PROTOTYPED (type
))
3559 puts_filtered (" TYPE_FLAG_PROTOTYPED");
3561 if (TYPE_INCOMPLETE (type
))
3563 puts_filtered (" TYPE_FLAG_INCOMPLETE");
3565 if (TYPE_VARARGS (type
))
3567 puts_filtered (" TYPE_FLAG_VARARGS");
3569 /* This is used for things like AltiVec registers on ppc. Gcc emits
3570 an attribute for the array type, which tells whether or not we
3571 have a vector, instead of a regular array. */
3572 if (TYPE_VECTOR (type
))
3574 puts_filtered (" TYPE_FLAG_VECTOR");
3576 if (TYPE_FIXED_INSTANCE (type
))
3578 puts_filtered (" TYPE_FIXED_INSTANCE");
3580 if (TYPE_STUB_SUPPORTED (type
))
3582 puts_filtered (" TYPE_STUB_SUPPORTED");
3584 if (TYPE_NOTTEXT (type
))
3586 puts_filtered (" TYPE_NOTTEXT");
3588 puts_filtered ("\n");
3589 printfi_filtered (spaces
, "nfields %d ", TYPE_NFIELDS (type
));
3590 gdb_print_host_address (TYPE_FIELDS (type
), gdb_stdout
);
3591 puts_filtered ("\n");
3592 for (idx
= 0; idx
< TYPE_NFIELDS (type
); idx
++)
3594 if (TYPE_CODE (type
) == TYPE_CODE_ENUM
)
3595 printfi_filtered (spaces
+ 2,
3596 "[%d] enumval %s type ",
3597 idx
, plongest (TYPE_FIELD_ENUMVAL (type
, idx
)));
3599 printfi_filtered (spaces
+ 2,
3600 "[%d] bitpos %d bitsize %d type ",
3601 idx
, TYPE_FIELD_BITPOS (type
, idx
),
3602 TYPE_FIELD_BITSIZE (type
, idx
));
3603 gdb_print_host_address (TYPE_FIELD_TYPE (type
, idx
), gdb_stdout
);
3604 printf_filtered (" name '%s' (",
3605 TYPE_FIELD_NAME (type
, idx
) != NULL
3606 ? TYPE_FIELD_NAME (type
, idx
)
3608 gdb_print_host_address (TYPE_FIELD_NAME (type
, idx
), gdb_stdout
);
3609 printf_filtered (")\n");
3610 if (TYPE_FIELD_TYPE (type
, idx
) != NULL
)
3612 recursive_dump_type (TYPE_FIELD_TYPE (type
, idx
), spaces
+ 4);
3615 if (TYPE_CODE (type
) == TYPE_CODE_RANGE
)
3617 printfi_filtered (spaces
, "low %s%s high %s%s\n",
3618 plongest (TYPE_LOW_BOUND (type
)),
3619 TYPE_LOW_BOUND_UNDEFINED (type
) ? " (undefined)" : "",
3620 plongest (TYPE_HIGH_BOUND (type
)),
3621 TYPE_HIGH_BOUND_UNDEFINED (type
)
3622 ? " (undefined)" : "");
3624 printfi_filtered (spaces
, "vptr_basetype ");
3625 gdb_print_host_address (TYPE_VPTR_BASETYPE (type
), gdb_stdout
);
3626 puts_filtered ("\n");
3627 if (TYPE_VPTR_BASETYPE (type
) != NULL
)
3629 recursive_dump_type (TYPE_VPTR_BASETYPE (type
), spaces
+ 2);
3631 printfi_filtered (spaces
, "vptr_fieldno %d\n",
3632 TYPE_VPTR_FIELDNO (type
));
3634 switch (TYPE_SPECIFIC_FIELD (type
))
3636 case TYPE_SPECIFIC_CPLUS_STUFF
:
3637 printfi_filtered (spaces
, "cplus_stuff ");
3638 gdb_print_host_address (TYPE_CPLUS_SPECIFIC (type
),
3640 puts_filtered ("\n");
3641 print_cplus_stuff (type
, spaces
);
3644 case TYPE_SPECIFIC_GNAT_STUFF
:
3645 printfi_filtered (spaces
, "gnat_stuff ");
3646 gdb_print_host_address (TYPE_GNAT_SPECIFIC (type
), gdb_stdout
);
3647 puts_filtered ("\n");
3648 print_gnat_stuff (type
, spaces
);
3651 case TYPE_SPECIFIC_FLOATFORMAT
:
3652 printfi_filtered (spaces
, "floatformat ");
3653 if (TYPE_FLOATFORMAT (type
) == NULL
)
3654 puts_filtered ("(null)");
3657 puts_filtered ("{ ");
3658 if (TYPE_FLOATFORMAT (type
)[0] == NULL
3659 || TYPE_FLOATFORMAT (type
)[0]->name
== NULL
)
3660 puts_filtered ("(null)");
3662 puts_filtered (TYPE_FLOATFORMAT (type
)[0]->name
);
3664 puts_filtered (", ");
3665 if (TYPE_FLOATFORMAT (type
)[1] == NULL
3666 || TYPE_FLOATFORMAT (type
)[1]->name
== NULL
)
3667 puts_filtered ("(null)");
3669 puts_filtered (TYPE_FLOATFORMAT (type
)[1]->name
);
3671 puts_filtered (" }");
3673 puts_filtered ("\n");
3676 case TYPE_SPECIFIC_FUNC
:
3677 printfi_filtered (spaces
, "calling_convention %d\n",
3678 TYPE_CALLING_CONVENTION (type
));
3679 /* tail_call_list is not printed. */
3684 obstack_free (&dont_print_type_obstack
, NULL
);
3687 /* Trivial helpers for the libiberty hash table, for mapping one
3692 struct type
*old
, *new;
3696 type_pair_hash (const void *item
)
3698 const struct type_pair
*pair
= item
;
3700 return htab_hash_pointer (pair
->old
);
3704 type_pair_eq (const void *item_lhs
, const void *item_rhs
)
3706 const struct type_pair
*lhs
= item_lhs
, *rhs
= item_rhs
;
3708 return lhs
->old
== rhs
->old
;
3711 /* Allocate the hash table used by copy_type_recursive to walk
3712 types without duplicates. We use OBJFILE's obstack, because
3713 OBJFILE is about to be deleted. */
3716 create_copied_types_hash (struct objfile
*objfile
)
3718 return htab_create_alloc_ex (1, type_pair_hash
, type_pair_eq
,
3719 NULL
, &objfile
->objfile_obstack
,
3720 hashtab_obstack_allocate
,
3721 dummy_obstack_deallocate
);
3724 /* Recursively copy (deep copy) TYPE, if it is associated with
3725 OBJFILE. Return a new type allocated using malloc, a saved type if
3726 we have already visited TYPE (using COPIED_TYPES), or TYPE if it is
3727 not associated with OBJFILE. */
3730 copy_type_recursive (struct objfile
*objfile
,
3732 htab_t copied_types
)
3734 struct type_pair
*stored
, pair
;
3736 struct type
*new_type
;
3738 if (! TYPE_OBJFILE_OWNED (type
))
3741 /* This type shouldn't be pointing to any types in other objfiles;
3742 if it did, the type might disappear unexpectedly. */
3743 gdb_assert (TYPE_OBJFILE (type
) == objfile
);
3746 slot
= htab_find_slot (copied_types
, &pair
, INSERT
);
3748 return ((struct type_pair
*) *slot
)->new;
3750 new_type
= alloc_type_arch (get_type_arch (type
));
3752 /* We must add the new type to the hash table immediately, in case
3753 we encounter this type again during a recursive call below. */
3755 = obstack_alloc (&objfile
->objfile_obstack
, sizeof (struct type_pair
));
3757 stored
->new = new_type
;
3760 /* Copy the common fields of types. For the main type, we simply
3761 copy the entire thing and then update specific fields as needed. */
3762 *TYPE_MAIN_TYPE (new_type
) = *TYPE_MAIN_TYPE (type
);
3763 TYPE_OBJFILE_OWNED (new_type
) = 0;
3764 TYPE_OWNER (new_type
).gdbarch
= get_type_arch (type
);
3766 if (TYPE_NAME (type
))
3767 TYPE_NAME (new_type
) = xstrdup (TYPE_NAME (type
));
3768 if (TYPE_TAG_NAME (type
))
3769 TYPE_TAG_NAME (new_type
) = xstrdup (TYPE_TAG_NAME (type
));
3771 TYPE_INSTANCE_FLAGS (new_type
) = TYPE_INSTANCE_FLAGS (type
);
3772 TYPE_LENGTH (new_type
) = TYPE_LENGTH (type
);
3774 /* Copy the fields. */
3775 if (TYPE_NFIELDS (type
))
3779 nfields
= TYPE_NFIELDS (type
);
3780 TYPE_FIELDS (new_type
) = XCNEWVEC (struct field
, nfields
);
3781 for (i
= 0; i
< nfields
; i
++)
3783 TYPE_FIELD_ARTIFICIAL (new_type
, i
) =
3784 TYPE_FIELD_ARTIFICIAL (type
, i
);
3785 TYPE_FIELD_BITSIZE (new_type
, i
) = TYPE_FIELD_BITSIZE (type
, i
);
3786 if (TYPE_FIELD_TYPE (type
, i
))
3787 TYPE_FIELD_TYPE (new_type
, i
)
3788 = copy_type_recursive (objfile
, TYPE_FIELD_TYPE (type
, i
),
3790 if (TYPE_FIELD_NAME (type
, i
))
3791 TYPE_FIELD_NAME (new_type
, i
) =
3792 xstrdup (TYPE_FIELD_NAME (type
, i
));
3793 switch (TYPE_FIELD_LOC_KIND (type
, i
))
3795 case FIELD_LOC_KIND_BITPOS
:
3796 SET_FIELD_BITPOS (TYPE_FIELD (new_type
, i
),
3797 TYPE_FIELD_BITPOS (type
, i
));
3799 case FIELD_LOC_KIND_ENUMVAL
:
3800 SET_FIELD_ENUMVAL (TYPE_FIELD (new_type
, i
),
3801 TYPE_FIELD_ENUMVAL (type
, i
));
3803 case FIELD_LOC_KIND_PHYSADDR
:
3804 SET_FIELD_PHYSADDR (TYPE_FIELD (new_type
, i
),
3805 TYPE_FIELD_STATIC_PHYSADDR (type
, i
));
3807 case FIELD_LOC_KIND_PHYSNAME
:
3808 SET_FIELD_PHYSNAME (TYPE_FIELD (new_type
, i
),
3809 xstrdup (TYPE_FIELD_STATIC_PHYSNAME (type
,
3813 internal_error (__FILE__
, __LINE__
,
3814 _("Unexpected type field location kind: %d"),
3815 TYPE_FIELD_LOC_KIND (type
, i
));
3820 /* For range types, copy the bounds information. */
3821 if (TYPE_CODE (type
) == TYPE_CODE_RANGE
)
3823 TYPE_RANGE_DATA (new_type
) = xmalloc (sizeof (struct range_bounds
));
3824 *TYPE_RANGE_DATA (new_type
) = *TYPE_RANGE_DATA (type
);
3827 /* Copy pointers to other types. */
3828 if (TYPE_TARGET_TYPE (type
))
3829 TYPE_TARGET_TYPE (new_type
) =
3830 copy_type_recursive (objfile
,
3831 TYPE_TARGET_TYPE (type
),
3833 if (TYPE_VPTR_BASETYPE (type
))
3834 TYPE_VPTR_BASETYPE (new_type
) =
3835 copy_type_recursive (objfile
,
3836 TYPE_VPTR_BASETYPE (type
),
3838 /* Maybe copy the type_specific bits.
3840 NOTE drow/2005-12-09: We do not copy the C++-specific bits like
3841 base classes and methods. There's no fundamental reason why we
3842 can't, but at the moment it is not needed. */
3844 if (TYPE_CODE (type
) == TYPE_CODE_FLT
)
3845 TYPE_FLOATFORMAT (new_type
) = TYPE_FLOATFORMAT (type
);
3846 else if (TYPE_CODE (type
) == TYPE_CODE_STRUCT
3847 || TYPE_CODE (type
) == TYPE_CODE_UNION
3848 || TYPE_CODE (type
) == TYPE_CODE_NAMESPACE
)
3849 INIT_CPLUS_SPECIFIC (new_type
);
3854 /* Make a copy of the given TYPE, except that the pointer & reference
3855 types are not preserved.
3857 This function assumes that the given type has an associated objfile.
3858 This objfile is used to allocate the new type. */
3861 copy_type (const struct type
*type
)
3863 struct type
*new_type
;
3865 gdb_assert (TYPE_OBJFILE_OWNED (type
));
3867 new_type
= alloc_type_copy (type
);
3868 TYPE_INSTANCE_FLAGS (new_type
) = TYPE_INSTANCE_FLAGS (type
);
3869 TYPE_LENGTH (new_type
) = TYPE_LENGTH (type
);
3870 memcpy (TYPE_MAIN_TYPE (new_type
), TYPE_MAIN_TYPE (type
),
3871 sizeof (struct main_type
));
3876 /* Helper functions to initialize architecture-specific types. */
3878 /* Allocate a type structure associated with GDBARCH and set its
3879 CODE, LENGTH, and NAME fields. */
3882 arch_type (struct gdbarch
*gdbarch
,
3883 enum type_code code
, int length
, char *name
)
3887 type
= alloc_type_arch (gdbarch
);
3888 TYPE_CODE (type
) = code
;
3889 TYPE_LENGTH (type
) = length
;
3892 TYPE_NAME (type
) = xstrdup (name
);
3897 /* Allocate a TYPE_CODE_INT type structure associated with GDBARCH.
3898 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
3899 the type's TYPE_UNSIGNED flag. NAME is the type name. */
3902 arch_integer_type (struct gdbarch
*gdbarch
,
3903 int bit
, int unsigned_p
, char *name
)
3907 t
= arch_type (gdbarch
, TYPE_CODE_INT
, bit
/ TARGET_CHAR_BIT
, name
);
3909 TYPE_UNSIGNED (t
) = 1;
3910 if (name
&& strcmp (name
, "char") == 0)
3911 TYPE_NOSIGN (t
) = 1;
3916 /* Allocate a TYPE_CODE_CHAR type structure associated with GDBARCH.
3917 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
3918 the type's TYPE_UNSIGNED flag. NAME is the type name. */
3921 arch_character_type (struct gdbarch
*gdbarch
,
3922 int bit
, int unsigned_p
, char *name
)
3926 t
= arch_type (gdbarch
, TYPE_CODE_CHAR
, bit
/ TARGET_CHAR_BIT
, name
);
3928 TYPE_UNSIGNED (t
) = 1;
3933 /* Allocate a TYPE_CODE_BOOL type structure associated with GDBARCH.
3934 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
3935 the type's TYPE_UNSIGNED flag. NAME is the type name. */
3938 arch_boolean_type (struct gdbarch
*gdbarch
,
3939 int bit
, int unsigned_p
, char *name
)
3943 t
= arch_type (gdbarch
, TYPE_CODE_BOOL
, bit
/ TARGET_CHAR_BIT
, name
);
3945 TYPE_UNSIGNED (t
) = 1;
3950 /* Allocate a TYPE_CODE_FLT type structure associated with GDBARCH.
3951 BIT is the type size in bits; if BIT equals -1, the size is
3952 determined by the floatformat. NAME is the type name. Set the
3953 TYPE_FLOATFORMAT from FLOATFORMATS. */
3956 arch_float_type (struct gdbarch
*gdbarch
,
3957 int bit
, char *name
, const struct floatformat
**floatformats
)
3963 gdb_assert (floatformats
!= NULL
);
3964 gdb_assert (floatformats
[0] != NULL
&& floatformats
[1] != NULL
);
3965 bit
= floatformats
[0]->totalsize
;
3967 gdb_assert (bit
>= 0);
3969 t
= arch_type (gdbarch
, TYPE_CODE_FLT
, bit
/ TARGET_CHAR_BIT
, name
);
3970 TYPE_FLOATFORMAT (t
) = floatformats
;
3974 /* Allocate a TYPE_CODE_COMPLEX type structure associated with GDBARCH.
3975 NAME is the type name. TARGET_TYPE is the component float type. */
3978 arch_complex_type (struct gdbarch
*gdbarch
,
3979 char *name
, struct type
*target_type
)
3983 t
= arch_type (gdbarch
, TYPE_CODE_COMPLEX
,
3984 2 * TYPE_LENGTH (target_type
), name
);
3985 TYPE_TARGET_TYPE (t
) = target_type
;
3989 /* Allocate a TYPE_CODE_FLAGS type structure associated with GDBARCH.
3990 NAME is the type name. LENGTH is the size of the flag word in bytes. */
3993 arch_flags_type (struct gdbarch
*gdbarch
, char *name
, int length
)
3995 int nfields
= length
* TARGET_CHAR_BIT
;
3998 type
= arch_type (gdbarch
, TYPE_CODE_FLAGS
, length
, name
);
3999 TYPE_UNSIGNED (type
) = 1;
4000 TYPE_NFIELDS (type
) = nfields
;
4001 TYPE_FIELDS (type
) = TYPE_ZALLOC (type
, nfields
* sizeof (struct field
));
4006 /* Add field to TYPE_CODE_FLAGS type TYPE to indicate the bit at
4007 position BITPOS is called NAME. */
4010 append_flags_type_flag (struct type
*type
, int bitpos
, char *name
)
4012 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_FLAGS
);
4013 gdb_assert (bitpos
< TYPE_NFIELDS (type
));
4014 gdb_assert (bitpos
>= 0);
4018 TYPE_FIELD_NAME (type
, bitpos
) = xstrdup (name
);
4019 SET_FIELD_BITPOS (TYPE_FIELD (type
, bitpos
), bitpos
);
4023 /* Don't show this field to the user. */
4024 SET_FIELD_BITPOS (TYPE_FIELD (type
, bitpos
), -1);
4028 /* Allocate a TYPE_CODE_STRUCT or TYPE_CODE_UNION type structure (as
4029 specified by CODE) associated with GDBARCH. NAME is the type name. */
4032 arch_composite_type (struct gdbarch
*gdbarch
, char *name
, enum type_code code
)
4036 gdb_assert (code
== TYPE_CODE_STRUCT
|| code
== TYPE_CODE_UNION
);
4037 t
= arch_type (gdbarch
, code
, 0, NULL
);
4038 TYPE_TAG_NAME (t
) = name
;
4039 INIT_CPLUS_SPECIFIC (t
);
4043 /* Add new field with name NAME and type FIELD to composite type T.
4044 Do not set the field's position or adjust the type's length;
4045 the caller should do so. Return the new field. */
4048 append_composite_type_field_raw (struct type
*t
, char *name
,
4053 TYPE_NFIELDS (t
) = TYPE_NFIELDS (t
) + 1;
4054 TYPE_FIELDS (t
) = xrealloc (TYPE_FIELDS (t
),
4055 sizeof (struct field
) * TYPE_NFIELDS (t
));
4056 f
= &(TYPE_FIELDS (t
)[TYPE_NFIELDS (t
) - 1]);
4057 memset (f
, 0, sizeof f
[0]);
4058 FIELD_TYPE (f
[0]) = field
;
4059 FIELD_NAME (f
[0]) = name
;
4063 /* Add new field with name NAME and type FIELD to composite type T.
4064 ALIGNMENT (if non-zero) specifies the minimum field alignment. */
4067 append_composite_type_field_aligned (struct type
*t
, char *name
,
4068 struct type
*field
, int alignment
)
4070 struct field
*f
= append_composite_type_field_raw (t
, name
, field
);
4072 if (TYPE_CODE (t
) == TYPE_CODE_UNION
)
4074 if (TYPE_LENGTH (t
) < TYPE_LENGTH (field
))
4075 TYPE_LENGTH (t
) = TYPE_LENGTH (field
);
4077 else if (TYPE_CODE (t
) == TYPE_CODE_STRUCT
)
4079 TYPE_LENGTH (t
) = TYPE_LENGTH (t
) + TYPE_LENGTH (field
);
4080 if (TYPE_NFIELDS (t
) > 1)
4082 SET_FIELD_BITPOS (f
[0],
4083 (FIELD_BITPOS (f
[-1])
4084 + (TYPE_LENGTH (FIELD_TYPE (f
[-1]))
4085 * TARGET_CHAR_BIT
)));
4091 alignment
*= TARGET_CHAR_BIT
;
4092 left
= FIELD_BITPOS (f
[0]) % alignment
;
4096 SET_FIELD_BITPOS (f
[0], FIELD_BITPOS (f
[0]) + (alignment
- left
));
4097 TYPE_LENGTH (t
) += (alignment
- left
) / TARGET_CHAR_BIT
;
4104 /* Add new field with name NAME and type FIELD to composite type T. */
4107 append_composite_type_field (struct type
*t
, char *name
,
4110 append_composite_type_field_aligned (t
, name
, field
, 0);
4113 static struct gdbarch_data
*gdbtypes_data
;
4115 const struct builtin_type
*
4116 builtin_type (struct gdbarch
*gdbarch
)
4118 return gdbarch_data (gdbarch
, gdbtypes_data
);
4122 gdbtypes_post_init (struct gdbarch
*gdbarch
)
4124 struct builtin_type
*builtin_type
4125 = GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct builtin_type
);
4128 builtin_type
->builtin_void
4129 = arch_type (gdbarch
, TYPE_CODE_VOID
, 1, "void");
4130 builtin_type
->builtin_char
4131 = arch_integer_type (gdbarch
, TARGET_CHAR_BIT
,
4132 !gdbarch_char_signed (gdbarch
), "char");
4133 builtin_type
->builtin_signed_char
4134 = arch_integer_type (gdbarch
, TARGET_CHAR_BIT
,
4136 builtin_type
->builtin_unsigned_char
4137 = arch_integer_type (gdbarch
, TARGET_CHAR_BIT
,
4138 1, "unsigned char");
4139 builtin_type
->builtin_short
4140 = arch_integer_type (gdbarch
, gdbarch_short_bit (gdbarch
),
4142 builtin_type
->builtin_unsigned_short
4143 = arch_integer_type (gdbarch
, gdbarch_short_bit (gdbarch
),
4144 1, "unsigned short");
4145 builtin_type
->builtin_int
4146 = arch_integer_type (gdbarch
, gdbarch_int_bit (gdbarch
),
4148 builtin_type
->builtin_unsigned_int
4149 = arch_integer_type (gdbarch
, gdbarch_int_bit (gdbarch
),
4151 builtin_type
->builtin_long
4152 = arch_integer_type (gdbarch
, gdbarch_long_bit (gdbarch
),
4154 builtin_type
->builtin_unsigned_long
4155 = arch_integer_type (gdbarch
, gdbarch_long_bit (gdbarch
),
4156 1, "unsigned long");
4157 builtin_type
->builtin_long_long
4158 = arch_integer_type (gdbarch
, gdbarch_long_long_bit (gdbarch
),
4160 builtin_type
->builtin_unsigned_long_long
4161 = arch_integer_type (gdbarch
, gdbarch_long_long_bit (gdbarch
),
4162 1, "unsigned long long");
4163 builtin_type
->builtin_float
4164 = arch_float_type (gdbarch
, gdbarch_float_bit (gdbarch
),
4165 "float", gdbarch_float_format (gdbarch
));
4166 builtin_type
->builtin_double
4167 = arch_float_type (gdbarch
, gdbarch_double_bit (gdbarch
),
4168 "double", gdbarch_double_format (gdbarch
));
4169 builtin_type
->builtin_long_double
4170 = arch_float_type (gdbarch
, gdbarch_long_double_bit (gdbarch
),
4171 "long double", gdbarch_long_double_format (gdbarch
));
4172 builtin_type
->builtin_complex
4173 = arch_complex_type (gdbarch
, "complex",
4174 builtin_type
->builtin_float
);
4175 builtin_type
->builtin_double_complex
4176 = arch_complex_type (gdbarch
, "double complex",
4177 builtin_type
->builtin_double
);
4178 builtin_type
->builtin_string
4179 = arch_type (gdbarch
, TYPE_CODE_STRING
, 1, "string");
4180 builtin_type
->builtin_bool
4181 = arch_type (gdbarch
, TYPE_CODE_BOOL
, 1, "bool");
4183 /* The following three are about decimal floating point types, which
4184 are 32-bits, 64-bits and 128-bits respectively. */
4185 builtin_type
->builtin_decfloat
4186 = arch_type (gdbarch
, TYPE_CODE_DECFLOAT
, 32 / 8, "_Decimal32");
4187 builtin_type
->builtin_decdouble
4188 = arch_type (gdbarch
, TYPE_CODE_DECFLOAT
, 64 / 8, "_Decimal64");
4189 builtin_type
->builtin_declong
4190 = arch_type (gdbarch
, TYPE_CODE_DECFLOAT
, 128 / 8, "_Decimal128");
4192 /* "True" character types. */
4193 builtin_type
->builtin_true_char
4194 = arch_character_type (gdbarch
, TARGET_CHAR_BIT
, 0, "true character");
4195 builtin_type
->builtin_true_unsigned_char
4196 = arch_character_type (gdbarch
, TARGET_CHAR_BIT
, 1, "true character");
4198 /* Fixed-size integer types. */
4199 builtin_type
->builtin_int0
4200 = arch_integer_type (gdbarch
, 0, 0, "int0_t");
4201 builtin_type
->builtin_int8
4202 = arch_integer_type (gdbarch
, 8, 0, "int8_t");
4203 builtin_type
->builtin_uint8
4204 = arch_integer_type (gdbarch
, 8, 1, "uint8_t");
4205 builtin_type
->builtin_int16
4206 = arch_integer_type (gdbarch
, 16, 0, "int16_t");
4207 builtin_type
->builtin_uint16
4208 = arch_integer_type (gdbarch
, 16, 1, "uint16_t");
4209 builtin_type
->builtin_int32
4210 = arch_integer_type (gdbarch
, 32, 0, "int32_t");
4211 builtin_type
->builtin_uint32
4212 = arch_integer_type (gdbarch
, 32, 1, "uint32_t");
4213 builtin_type
->builtin_int64
4214 = arch_integer_type (gdbarch
, 64, 0, "int64_t");
4215 builtin_type
->builtin_uint64
4216 = arch_integer_type (gdbarch
, 64, 1, "uint64_t");
4217 builtin_type
->builtin_int128
4218 = arch_integer_type (gdbarch
, 128, 0, "int128_t");
4219 builtin_type
->builtin_uint128
4220 = arch_integer_type (gdbarch
, 128, 1, "uint128_t");
4221 TYPE_INSTANCE_FLAGS (builtin_type
->builtin_int8
) |=
4222 TYPE_INSTANCE_FLAG_NOTTEXT
;
4223 TYPE_INSTANCE_FLAGS (builtin_type
->builtin_uint8
) |=
4224 TYPE_INSTANCE_FLAG_NOTTEXT
;
4226 /* Wide character types. */
4227 builtin_type
->builtin_char16
4228 = arch_integer_type (gdbarch
, 16, 0, "char16_t");
4229 builtin_type
->builtin_char32
4230 = arch_integer_type (gdbarch
, 32, 0, "char32_t");
4233 /* Default data/code pointer types. */
4234 builtin_type
->builtin_data_ptr
4235 = lookup_pointer_type (builtin_type
->builtin_void
);
4236 builtin_type
->builtin_func_ptr
4237 = lookup_pointer_type (lookup_function_type (builtin_type
->builtin_void
));
4238 builtin_type
->builtin_func_func
4239 = lookup_function_type (builtin_type
->builtin_func_ptr
);
4241 /* This type represents a GDB internal function. */
4242 builtin_type
->internal_fn
4243 = arch_type (gdbarch
, TYPE_CODE_INTERNAL_FUNCTION
, 0,
4244 "<internal function>");
4246 return builtin_type
;
4249 /* This set of objfile-based types is intended to be used by symbol
4250 readers as basic types. */
4252 static const struct objfile_data
*objfile_type_data
;
4254 const struct objfile_type
*
4255 objfile_type (struct objfile
*objfile
)
4257 struct gdbarch
*gdbarch
;
4258 struct objfile_type
*objfile_type
4259 = objfile_data (objfile
, objfile_type_data
);
4262 return objfile_type
;
4264 objfile_type
= OBSTACK_CALLOC (&objfile
->objfile_obstack
,
4265 1, struct objfile_type
);
4267 /* Use the objfile architecture to determine basic type properties. */
4268 gdbarch
= get_objfile_arch (objfile
);
4271 objfile_type
->builtin_void
4272 = init_type (TYPE_CODE_VOID
, 1,
4276 objfile_type
->builtin_char
4277 = init_type (TYPE_CODE_INT
, TARGET_CHAR_BIT
/ TARGET_CHAR_BIT
,
4279 | (gdbarch_char_signed (gdbarch
) ? 0 : TYPE_FLAG_UNSIGNED
)),
4281 objfile_type
->builtin_signed_char
4282 = init_type (TYPE_CODE_INT
, TARGET_CHAR_BIT
/ TARGET_CHAR_BIT
,
4284 "signed char", objfile
);
4285 objfile_type
->builtin_unsigned_char
4286 = init_type (TYPE_CODE_INT
, TARGET_CHAR_BIT
/ TARGET_CHAR_BIT
,
4288 "unsigned char", objfile
);
4289 objfile_type
->builtin_short
4290 = init_type (TYPE_CODE_INT
,
4291 gdbarch_short_bit (gdbarch
) / TARGET_CHAR_BIT
,
4292 0, "short", objfile
);
4293 objfile_type
->builtin_unsigned_short
4294 = init_type (TYPE_CODE_INT
,
4295 gdbarch_short_bit (gdbarch
) / TARGET_CHAR_BIT
,
4296 TYPE_FLAG_UNSIGNED
, "unsigned short", objfile
);
4297 objfile_type
->builtin_int
4298 = init_type (TYPE_CODE_INT
,
4299 gdbarch_int_bit (gdbarch
) / TARGET_CHAR_BIT
,
4301 objfile_type
->builtin_unsigned_int
4302 = init_type (TYPE_CODE_INT
,
4303 gdbarch_int_bit (gdbarch
) / TARGET_CHAR_BIT
,
4304 TYPE_FLAG_UNSIGNED
, "unsigned int", objfile
);
4305 objfile_type
->builtin_long
4306 = init_type (TYPE_CODE_INT
,
4307 gdbarch_long_bit (gdbarch
) / TARGET_CHAR_BIT
,
4308 0, "long", objfile
);
4309 objfile_type
->builtin_unsigned_long
4310 = init_type (TYPE_CODE_INT
,
4311 gdbarch_long_bit (gdbarch
) / TARGET_CHAR_BIT
,
4312 TYPE_FLAG_UNSIGNED
, "unsigned long", objfile
);
4313 objfile_type
->builtin_long_long
4314 = init_type (TYPE_CODE_INT
,
4315 gdbarch_long_long_bit (gdbarch
) / TARGET_CHAR_BIT
,
4316 0, "long long", objfile
);
4317 objfile_type
->builtin_unsigned_long_long
4318 = init_type (TYPE_CODE_INT
,
4319 gdbarch_long_long_bit (gdbarch
) / TARGET_CHAR_BIT
,
4320 TYPE_FLAG_UNSIGNED
, "unsigned long long", objfile
);
4322 objfile_type
->builtin_float
4323 = init_type (TYPE_CODE_FLT
,
4324 gdbarch_float_bit (gdbarch
) / TARGET_CHAR_BIT
,
4325 0, "float", objfile
);
4326 TYPE_FLOATFORMAT (objfile_type
->builtin_float
)
4327 = gdbarch_float_format (gdbarch
);
4328 objfile_type
->builtin_double
4329 = init_type (TYPE_CODE_FLT
,
4330 gdbarch_double_bit (gdbarch
) / TARGET_CHAR_BIT
,
4331 0, "double", objfile
);
4332 TYPE_FLOATFORMAT (objfile_type
->builtin_double
)
4333 = gdbarch_double_format (gdbarch
);
4334 objfile_type
->builtin_long_double
4335 = init_type (TYPE_CODE_FLT
,
4336 gdbarch_long_double_bit (gdbarch
) / TARGET_CHAR_BIT
,
4337 0, "long double", objfile
);
4338 TYPE_FLOATFORMAT (objfile_type
->builtin_long_double
)
4339 = gdbarch_long_double_format (gdbarch
);
4341 /* This type represents a type that was unrecognized in symbol read-in. */
4342 objfile_type
->builtin_error
4343 = init_type (TYPE_CODE_ERROR
, 0, 0, "<unknown type>", objfile
);
4345 /* The following set of types is used for symbols with no
4346 debug information. */
4347 objfile_type
->nodebug_text_symbol
4348 = init_type (TYPE_CODE_FUNC
, 1, 0,
4349 "<text variable, no debug info>", objfile
);
4350 TYPE_TARGET_TYPE (objfile_type
->nodebug_text_symbol
)
4351 = objfile_type
->builtin_int
;
4352 objfile_type
->nodebug_text_gnu_ifunc_symbol
4353 = init_type (TYPE_CODE_FUNC
, 1, TYPE_FLAG_GNU_IFUNC
,
4354 "<text gnu-indirect-function variable, no debug info>",
4356 TYPE_TARGET_TYPE (objfile_type
->nodebug_text_gnu_ifunc_symbol
)
4357 = objfile_type
->nodebug_text_symbol
;
4358 objfile_type
->nodebug_got_plt_symbol
4359 = init_type (TYPE_CODE_PTR
, gdbarch_addr_bit (gdbarch
) / 8, 0,
4360 "<text from jump slot in .got.plt, no debug info>",
4362 TYPE_TARGET_TYPE (objfile_type
->nodebug_got_plt_symbol
)
4363 = objfile_type
->nodebug_text_symbol
;
4364 objfile_type
->nodebug_data_symbol
4365 = init_type (TYPE_CODE_INT
,
4366 gdbarch_int_bit (gdbarch
) / HOST_CHAR_BIT
, 0,
4367 "<data variable, no debug info>", objfile
);
4368 objfile_type
->nodebug_unknown_symbol
4369 = init_type (TYPE_CODE_INT
, 1, 0,
4370 "<variable (not text or data), no debug info>", objfile
);
4371 objfile_type
->nodebug_tls_symbol
4372 = init_type (TYPE_CODE_INT
,
4373 gdbarch_int_bit (gdbarch
) / HOST_CHAR_BIT
, 0,
4374 "<thread local variable, no debug info>", objfile
);
4376 /* NOTE: on some targets, addresses and pointers are not necessarily
4380 - gdb's `struct type' always describes the target's
4382 - gdb's `struct value' objects should always hold values in
4384 - gdb's CORE_ADDR values are addresses in the unified virtual
4385 address space that the assembler and linker work with. Thus,
4386 since target_read_memory takes a CORE_ADDR as an argument, it
4387 can access any memory on the target, even if the processor has
4388 separate code and data address spaces.
4390 In this context, objfile_type->builtin_core_addr is a bit odd:
4391 it's a target type for a value the target will never see. It's
4392 only used to hold the values of (typeless) linker symbols, which
4393 are indeed in the unified virtual address space. */
4395 objfile_type
->builtin_core_addr
4396 = init_type (TYPE_CODE_INT
,
4397 gdbarch_addr_bit (gdbarch
) / 8,
4398 TYPE_FLAG_UNSIGNED
, "__CORE_ADDR", objfile
);
4400 set_objfile_data (objfile
, objfile_type_data
, objfile_type
);
4401 return objfile_type
;
4404 extern initialize_file_ftype _initialize_gdbtypes
;
4407 _initialize_gdbtypes (void)
4409 gdbtypes_data
= gdbarch_data_register_post_init (gdbtypes_post_init
);
4410 objfile_type_data
= register_objfile_data ();
4412 add_setshow_zuinteger_cmd ("overload", no_class
, &overload_debug
,
4413 _("Set debugging of C++ overloading."),
4414 _("Show debugging of C++ overloading."),
4415 _("When enabled, ranking of the "
4416 "functions is displayed."),
4418 show_overload_debug
,
4419 &setdebuglist
, &showdebuglist
);
4421 /* Add user knob for controlling resolution of opaque types. */
4422 add_setshow_boolean_cmd ("opaque-type-resolution", class_support
,
4423 &opaque_type_resolution
,
4424 _("Set resolution of opaque struct/class/union"
4425 " types (if set before loading symbols)."),
4426 _("Show resolution of opaque struct/class/union"
4427 " types (if set before loading symbols)."),
4429 show_opaque_type_resolution
,
4430 &setlist
, &showlist
);
4432 /* Add an option to permit non-strict type checking. */
4433 add_setshow_boolean_cmd ("type", class_support
,
4434 &strict_type_checking
,
4435 _("Set strict type checking."),
4436 _("Show strict type checking."),
4438 show_strict_type_checking
,
4439 &setchecklist
, &showchecklist
);