1 /* Support routines for manipulating internal types for GDB.
3 Copyright (C) 1992-2018 Free Software Foundation, Inc.
5 Contributed by Cygnus Support, using pieces from other GDB modules.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
28 #include "expression.h"
33 #include "complaints.h"
37 #include "cp-support.h"
39 #include "dwarf2loc.h"
41 #include "floatformat.h"
43 /* Initialize BADNESS constants. */
45 const struct rank LENGTH_MISMATCH_BADNESS
= {100,0};
47 const struct rank TOO_FEW_PARAMS_BADNESS
= {100,0};
48 const struct rank INCOMPATIBLE_TYPE_BADNESS
= {100,0};
50 const struct rank EXACT_MATCH_BADNESS
= {0,0};
52 const struct rank INTEGER_PROMOTION_BADNESS
= {1,0};
53 const struct rank FLOAT_PROMOTION_BADNESS
= {1,0};
54 const struct rank BASE_PTR_CONVERSION_BADNESS
= {1,0};
55 const struct rank CV_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_CHAIN (type
) = type
; /* Chain back to itself. */
190 /* Allocate a new GDBARCH-associated type structure and fill it
191 with some defaults. Space for the type structure is allocated
192 on the obstack associated with GDBARCH. */
195 alloc_type_arch (struct gdbarch
*gdbarch
)
199 gdb_assert (gdbarch
!= NULL
);
201 /* Alloc the structure and start off with all fields zeroed. */
203 type
= GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct type
);
204 TYPE_MAIN_TYPE (type
) = GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct main_type
);
206 TYPE_OBJFILE_OWNED (type
) = 0;
207 TYPE_OWNER (type
).gdbarch
= gdbarch
;
209 /* Initialize the fields that might not be zero. */
211 TYPE_CODE (type
) = TYPE_CODE_UNDEF
;
212 TYPE_CHAIN (type
) = type
; /* Chain back to itself. */
217 /* If TYPE is objfile-associated, allocate a new type structure
218 associated with the same objfile. If TYPE is gdbarch-associated,
219 allocate a new type structure associated with the same gdbarch. */
222 alloc_type_copy (const struct type
*type
)
224 if (TYPE_OBJFILE_OWNED (type
))
225 return alloc_type (TYPE_OWNER (type
).objfile
);
227 return alloc_type_arch (TYPE_OWNER (type
).gdbarch
);
230 /* If TYPE is gdbarch-associated, return that architecture.
231 If TYPE is objfile-associated, return that objfile's architecture. */
234 get_type_arch (const struct type
*type
)
236 if (TYPE_OBJFILE_OWNED (type
))
237 return get_objfile_arch (TYPE_OWNER (type
).objfile
);
239 return TYPE_OWNER (type
).gdbarch
;
242 /* See gdbtypes.h. */
245 get_target_type (struct type
*type
)
249 type
= TYPE_TARGET_TYPE (type
);
251 type
= check_typedef (type
);
257 /* See gdbtypes.h. */
260 type_length_units (struct type
*type
)
262 struct gdbarch
*arch
= get_type_arch (type
);
263 int unit_size
= gdbarch_addressable_memory_unit_size (arch
);
265 return TYPE_LENGTH (type
) / unit_size
;
268 /* Alloc a new type instance structure, fill it with some defaults,
269 and point it at OLDTYPE. Allocate the new type instance from the
270 same place as OLDTYPE. */
273 alloc_type_instance (struct type
*oldtype
)
277 /* Allocate the structure. */
279 if (! TYPE_OBJFILE_OWNED (oldtype
))
280 type
= XCNEW (struct type
);
282 type
= OBSTACK_ZALLOC (&TYPE_OBJFILE (oldtype
)->objfile_obstack
,
285 TYPE_MAIN_TYPE (type
) = TYPE_MAIN_TYPE (oldtype
);
287 TYPE_CHAIN (type
) = type
; /* Chain back to itself for now. */
292 /* Clear all remnants of the previous type at TYPE, in preparation for
293 replacing it with something else. Preserve owner information. */
296 smash_type (struct type
*type
)
298 int objfile_owned
= TYPE_OBJFILE_OWNED (type
);
299 union type_owner owner
= TYPE_OWNER (type
);
301 memset (TYPE_MAIN_TYPE (type
), 0, sizeof (struct main_type
));
303 /* Restore owner information. */
304 TYPE_OBJFILE_OWNED (type
) = objfile_owned
;
305 TYPE_OWNER (type
) = owner
;
307 /* For now, delete the rings. */
308 TYPE_CHAIN (type
) = type
;
310 /* For now, leave the pointer/reference types alone. */
313 /* Lookup a pointer to a type TYPE. TYPEPTR, if nonzero, points
314 to a pointer to memory where the pointer type should be stored.
315 If *TYPEPTR is zero, update it to point to the pointer type we return.
316 We allocate new memory if needed. */
319 make_pointer_type (struct type
*type
, struct type
**typeptr
)
321 struct type
*ntype
; /* New type */
324 ntype
= TYPE_POINTER_TYPE (type
);
329 return ntype
; /* Don't care about alloc,
330 and have new type. */
331 else if (*typeptr
== 0)
333 *typeptr
= ntype
; /* Tracking alloc, and have new type. */
338 if (typeptr
== 0 || *typeptr
== 0) /* We'll need to allocate one. */
340 ntype
= alloc_type_copy (type
);
344 else /* We have storage, but need to reset it. */
347 chain
= TYPE_CHAIN (ntype
);
349 TYPE_CHAIN (ntype
) = chain
;
352 TYPE_TARGET_TYPE (ntype
) = type
;
353 TYPE_POINTER_TYPE (type
) = ntype
;
355 /* FIXME! Assumes the machine has only one representation for pointers! */
358 = gdbarch_ptr_bit (get_type_arch (type
)) / TARGET_CHAR_BIT
;
359 TYPE_CODE (ntype
) = TYPE_CODE_PTR
;
361 /* Mark pointers as unsigned. The target converts between pointers
362 and addresses (CORE_ADDRs) using gdbarch_pointer_to_address and
363 gdbarch_address_to_pointer. */
364 TYPE_UNSIGNED (ntype
) = 1;
366 /* Update the length of all the other variants of this type. */
367 chain
= TYPE_CHAIN (ntype
);
368 while (chain
!= ntype
)
370 TYPE_LENGTH (chain
) = TYPE_LENGTH (ntype
);
371 chain
= TYPE_CHAIN (chain
);
377 /* Given a type TYPE, return a type of pointers to that type.
378 May need to construct such a type if this is the first use. */
381 lookup_pointer_type (struct type
*type
)
383 return make_pointer_type (type
, (struct type
**) 0);
386 /* Lookup a C++ `reference' to a type TYPE. TYPEPTR, if nonzero,
387 points to a pointer to memory where the reference type should be
388 stored. If *TYPEPTR is zero, update it to point to the reference
389 type we return. We allocate new memory if needed. REFCODE denotes
390 the kind of reference type to lookup (lvalue or rvalue reference). */
393 make_reference_type (struct type
*type
, struct type
**typeptr
,
394 enum type_code refcode
)
396 struct type
*ntype
; /* New type */
397 struct type
**reftype
;
400 gdb_assert (refcode
== TYPE_CODE_REF
|| refcode
== TYPE_CODE_RVALUE_REF
);
402 ntype
= (refcode
== TYPE_CODE_REF
? TYPE_REFERENCE_TYPE (type
)
403 : TYPE_RVALUE_REFERENCE_TYPE (type
));
408 return ntype
; /* Don't care about alloc,
409 and have new type. */
410 else if (*typeptr
== 0)
412 *typeptr
= ntype
; /* Tracking alloc, and have new type. */
417 if (typeptr
== 0 || *typeptr
== 0) /* We'll need to allocate one. */
419 ntype
= alloc_type_copy (type
);
423 else /* We have storage, but need to reset it. */
426 chain
= TYPE_CHAIN (ntype
);
428 TYPE_CHAIN (ntype
) = chain
;
431 TYPE_TARGET_TYPE (ntype
) = type
;
432 reftype
= (refcode
== TYPE_CODE_REF
? &TYPE_REFERENCE_TYPE (type
)
433 : &TYPE_RVALUE_REFERENCE_TYPE (type
));
437 /* FIXME! Assume the machine has only one representation for
438 references, and that it matches the (only) representation for
441 TYPE_LENGTH (ntype
) =
442 gdbarch_ptr_bit (get_type_arch (type
)) / TARGET_CHAR_BIT
;
443 TYPE_CODE (ntype
) = refcode
;
447 /* Update the length of all the other variants of this type. */
448 chain
= TYPE_CHAIN (ntype
);
449 while (chain
!= ntype
)
451 TYPE_LENGTH (chain
) = TYPE_LENGTH (ntype
);
452 chain
= TYPE_CHAIN (chain
);
458 /* Same as above, but caller doesn't care about memory allocation
462 lookup_reference_type (struct type
*type
, enum type_code refcode
)
464 return make_reference_type (type
, (struct type
**) 0, refcode
);
467 /* Lookup the lvalue reference type for the type TYPE. */
470 lookup_lvalue_reference_type (struct type
*type
)
472 return lookup_reference_type (type
, TYPE_CODE_REF
);
475 /* Lookup the rvalue reference type for the type TYPE. */
478 lookup_rvalue_reference_type (struct type
*type
)
480 return lookup_reference_type (type
, TYPE_CODE_RVALUE_REF
);
483 /* Lookup a function type that returns type TYPE. TYPEPTR, if
484 nonzero, points to a pointer to memory where the function type
485 should be stored. If *TYPEPTR is zero, update it to point to the
486 function type we return. We allocate new memory if needed. */
489 make_function_type (struct type
*type
, struct type
**typeptr
)
491 struct type
*ntype
; /* New type */
493 if (typeptr
== 0 || *typeptr
== 0) /* We'll need to allocate one. */
495 ntype
= alloc_type_copy (type
);
499 else /* We have storage, but need to reset it. */
505 TYPE_TARGET_TYPE (ntype
) = type
;
507 TYPE_LENGTH (ntype
) = 1;
508 TYPE_CODE (ntype
) = TYPE_CODE_FUNC
;
510 INIT_FUNC_SPECIFIC (ntype
);
515 /* Given a type TYPE, return a type of functions that return that type.
516 May need to construct such a type if this is the first use. */
519 lookup_function_type (struct type
*type
)
521 return make_function_type (type
, (struct type
**) 0);
524 /* Given a type TYPE and argument types, return the appropriate
525 function type. If the final type in PARAM_TYPES is NULL, make a
529 lookup_function_type_with_arguments (struct type
*type
,
531 struct type
**param_types
)
533 struct type
*fn
= make_function_type (type
, (struct type
**) 0);
538 if (param_types
[nparams
- 1] == NULL
)
541 TYPE_VARARGS (fn
) = 1;
543 else if (TYPE_CODE (check_typedef (param_types
[nparams
- 1]))
547 /* Caller should have ensured this. */
548 gdb_assert (nparams
== 0);
549 TYPE_PROTOTYPED (fn
) = 1;
552 TYPE_PROTOTYPED (fn
) = 1;
555 TYPE_NFIELDS (fn
) = nparams
;
557 = (struct field
*) TYPE_ZALLOC (fn
, nparams
* sizeof (struct field
));
558 for (i
= 0; i
< nparams
; ++i
)
559 TYPE_FIELD_TYPE (fn
, i
) = param_types
[i
];
564 /* Identify address space identifier by name --
565 return the integer flag defined in gdbtypes.h. */
568 address_space_name_to_int (struct gdbarch
*gdbarch
, char *space_identifier
)
572 /* Check for known address space delimiters. */
573 if (!strcmp (space_identifier
, "code"))
574 return TYPE_INSTANCE_FLAG_CODE_SPACE
;
575 else if (!strcmp (space_identifier
, "data"))
576 return TYPE_INSTANCE_FLAG_DATA_SPACE
;
577 else if (gdbarch_address_class_name_to_type_flags_p (gdbarch
)
578 && gdbarch_address_class_name_to_type_flags (gdbarch
,
583 error (_("Unknown address space specifier: \"%s\""), space_identifier
);
586 /* Identify address space identifier by integer flag as defined in
587 gdbtypes.h -- return the string version of the adress space name. */
590 address_space_int_to_name (struct gdbarch
*gdbarch
, int space_flag
)
592 if (space_flag
& TYPE_INSTANCE_FLAG_CODE_SPACE
)
594 else if (space_flag
& TYPE_INSTANCE_FLAG_DATA_SPACE
)
596 else if ((space_flag
& TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL
)
597 && gdbarch_address_class_type_flags_to_name_p (gdbarch
))
598 return gdbarch_address_class_type_flags_to_name (gdbarch
, space_flag
);
603 /* Create a new type with instance flags NEW_FLAGS, based on TYPE.
605 If STORAGE is non-NULL, create the new type instance there.
606 STORAGE must be in the same obstack as TYPE. */
609 make_qualified_type (struct type
*type
, int new_flags
,
610 struct type
*storage
)
617 if (TYPE_INSTANCE_FLAGS (ntype
) == new_flags
)
619 ntype
= TYPE_CHAIN (ntype
);
621 while (ntype
!= type
);
623 /* Create a new type instance. */
625 ntype
= alloc_type_instance (type
);
628 /* If STORAGE was provided, it had better be in the same objfile
629 as TYPE. Otherwise, we can't link it into TYPE's cv chain:
630 if one objfile is freed and the other kept, we'd have
631 dangling pointers. */
632 gdb_assert (TYPE_OBJFILE (type
) == TYPE_OBJFILE (storage
));
635 TYPE_MAIN_TYPE (ntype
) = TYPE_MAIN_TYPE (type
);
636 TYPE_CHAIN (ntype
) = ntype
;
639 /* Pointers or references to the original type are not relevant to
641 TYPE_POINTER_TYPE (ntype
) = (struct type
*) 0;
642 TYPE_REFERENCE_TYPE (ntype
) = (struct type
*) 0;
644 /* Chain the new qualified type to the old type. */
645 TYPE_CHAIN (ntype
) = TYPE_CHAIN (type
);
646 TYPE_CHAIN (type
) = ntype
;
648 /* Now set the instance flags and return the new type. */
649 TYPE_INSTANCE_FLAGS (ntype
) = new_flags
;
651 /* Set length of new type to that of the original type. */
652 TYPE_LENGTH (ntype
) = TYPE_LENGTH (type
);
657 /* Make an address-space-delimited variant of a type -- a type that
658 is identical to the one supplied except that it has an address
659 space attribute attached to it (such as "code" or "data").
661 The space attributes "code" and "data" are for Harvard
662 architectures. The address space attributes are for architectures
663 which have alternately sized pointers or pointers with alternate
667 make_type_with_address_space (struct type
*type
, int space_flag
)
669 int new_flags
= ((TYPE_INSTANCE_FLAGS (type
)
670 & ~(TYPE_INSTANCE_FLAG_CODE_SPACE
671 | TYPE_INSTANCE_FLAG_DATA_SPACE
672 | TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL
))
675 return make_qualified_type (type
, new_flags
, NULL
);
678 /* Make a "c-v" variant of a type -- a type that is identical to the
679 one supplied except that it may have const or volatile attributes
680 CNST is a flag for setting the const attribute
681 VOLTL is a flag for setting the volatile attribute
682 TYPE is the base type whose variant we are creating.
684 If TYPEPTR and *TYPEPTR are non-zero, then *TYPEPTR points to
685 storage to hold the new qualified type; *TYPEPTR and TYPE must be
686 in the same objfile. Otherwise, allocate fresh memory for the new
687 type whereever TYPE lives. If TYPEPTR is non-zero, set it to the
688 new type we construct. */
691 make_cv_type (int cnst
, int voltl
,
693 struct type
**typeptr
)
695 struct type
*ntype
; /* New type */
697 int new_flags
= (TYPE_INSTANCE_FLAGS (type
)
698 & ~(TYPE_INSTANCE_FLAG_CONST
699 | TYPE_INSTANCE_FLAG_VOLATILE
));
702 new_flags
|= TYPE_INSTANCE_FLAG_CONST
;
705 new_flags
|= TYPE_INSTANCE_FLAG_VOLATILE
;
707 if (typeptr
&& *typeptr
!= NULL
)
709 /* TYPE and *TYPEPTR must be in the same objfile. We can't have
710 a C-V variant chain that threads across objfiles: if one
711 objfile gets freed, then the other has a broken C-V chain.
713 This code used to try to copy over the main type from TYPE to
714 *TYPEPTR if they were in different objfiles, but that's
715 wrong, too: TYPE may have a field list or member function
716 lists, which refer to types of their own, etc. etc. The
717 whole shebang would need to be copied over recursively; you
718 can't have inter-objfile pointers. The only thing to do is
719 to leave stub types as stub types, and look them up afresh by
720 name each time you encounter them. */
721 gdb_assert (TYPE_OBJFILE (*typeptr
) == TYPE_OBJFILE (type
));
724 ntype
= make_qualified_type (type
, new_flags
,
725 typeptr
? *typeptr
: NULL
);
733 /* Make a 'restrict'-qualified version of TYPE. */
736 make_restrict_type (struct type
*type
)
738 return make_qualified_type (type
,
739 (TYPE_INSTANCE_FLAGS (type
)
740 | TYPE_INSTANCE_FLAG_RESTRICT
),
744 /* Make a type without const, volatile, or restrict. */
747 make_unqualified_type (struct type
*type
)
749 return make_qualified_type (type
,
750 (TYPE_INSTANCE_FLAGS (type
)
751 & ~(TYPE_INSTANCE_FLAG_CONST
752 | TYPE_INSTANCE_FLAG_VOLATILE
753 | TYPE_INSTANCE_FLAG_RESTRICT
)),
757 /* Make a '_Atomic'-qualified version of TYPE. */
760 make_atomic_type (struct type
*type
)
762 return make_qualified_type (type
,
763 (TYPE_INSTANCE_FLAGS (type
)
764 | TYPE_INSTANCE_FLAG_ATOMIC
),
768 /* Replace the contents of ntype with the type *type. This changes the
769 contents, rather than the pointer for TYPE_MAIN_TYPE (ntype); thus
770 the changes are propogated to all types in the TYPE_CHAIN.
772 In order to build recursive types, it's inevitable that we'll need
773 to update types in place --- but this sort of indiscriminate
774 smashing is ugly, and needs to be replaced with something more
775 controlled. TYPE_MAIN_TYPE is a step in this direction; it's not
776 clear if more steps are needed. */
779 replace_type (struct type
*ntype
, struct type
*type
)
783 /* These two types had better be in the same objfile. Otherwise,
784 the assignment of one type's main type structure to the other
785 will produce a type with references to objects (names; field
786 lists; etc.) allocated on an objfile other than its own. */
787 gdb_assert (TYPE_OBJFILE (ntype
) == TYPE_OBJFILE (type
));
789 *TYPE_MAIN_TYPE (ntype
) = *TYPE_MAIN_TYPE (type
);
791 /* The type length is not a part of the main type. Update it for
792 each type on the variant chain. */
796 /* Assert that this element of the chain has no address-class bits
797 set in its flags. Such type variants might have type lengths
798 which are supposed to be different from the non-address-class
799 variants. This assertion shouldn't ever be triggered because
800 symbol readers which do construct address-class variants don't
801 call replace_type(). */
802 gdb_assert (TYPE_ADDRESS_CLASS_ALL (chain
) == 0);
804 TYPE_LENGTH (chain
) = TYPE_LENGTH (type
);
805 chain
= TYPE_CHAIN (chain
);
807 while (ntype
!= chain
);
809 /* Assert that the two types have equivalent instance qualifiers.
810 This should be true for at least all of our debug readers. */
811 gdb_assert (TYPE_INSTANCE_FLAGS (ntype
) == TYPE_INSTANCE_FLAGS (type
));
814 /* Implement direct support for MEMBER_TYPE in GNU C++.
815 May need to construct such a type if this is the first use.
816 The TYPE is the type of the member. The DOMAIN is the type
817 of the aggregate that the member belongs to. */
820 lookup_memberptr_type (struct type
*type
, struct type
*domain
)
824 mtype
= alloc_type_copy (type
);
825 smash_to_memberptr_type (mtype
, domain
, type
);
829 /* Return a pointer-to-method type, for a method of type TO_TYPE. */
832 lookup_methodptr_type (struct type
*to_type
)
836 mtype
= alloc_type_copy (to_type
);
837 smash_to_methodptr_type (mtype
, to_type
);
841 /* Allocate a stub method whose return type is TYPE. This apparently
842 happens for speed of symbol reading, since parsing out the
843 arguments to the method is cpu-intensive, the way we are doing it.
844 So, we will fill in arguments later. This always returns a fresh
848 allocate_stub_method (struct type
*type
)
852 mtype
= alloc_type_copy (type
);
853 TYPE_CODE (mtype
) = TYPE_CODE_METHOD
;
854 TYPE_LENGTH (mtype
) = 1;
855 TYPE_STUB (mtype
) = 1;
856 TYPE_TARGET_TYPE (mtype
) = type
;
857 /* TYPE_SELF_TYPE (mtype) = unknown yet */
861 /* See gdbtypes.h. */
864 operator== (const dynamic_prop
&l
, const dynamic_prop
&r
)
866 if (l
.kind
!= r
.kind
)
874 return l
.data
.const_val
== r
.data
.const_val
;
875 case PROP_ADDR_OFFSET
:
878 return l
.data
.baton
== r
.data
.baton
;
881 gdb_assert_not_reached ("unhandled dynamic_prop kind");
884 /* See gdbtypes.h. */
887 operator== (const range_bounds
&l
, const range_bounds
&r
)
889 #define FIELD_EQ(FIELD) (l.FIELD == r.FIELD)
891 return (FIELD_EQ (low
)
893 && FIELD_EQ (flag_upper_bound_is_count
)
894 && FIELD_EQ (flag_bound_evaluated
));
899 /* Create a range type with a dynamic range from LOW_BOUND to
900 HIGH_BOUND, inclusive. See create_range_type for further details. */
903 create_range_type (struct type
*result_type
, struct type
*index_type
,
904 const struct dynamic_prop
*low_bound
,
905 const struct dynamic_prop
*high_bound
)
907 if (result_type
== NULL
)
908 result_type
= alloc_type_copy (index_type
);
909 TYPE_CODE (result_type
) = TYPE_CODE_RANGE
;
910 TYPE_TARGET_TYPE (result_type
) = index_type
;
911 if (TYPE_STUB (index_type
))
912 TYPE_TARGET_STUB (result_type
) = 1;
914 TYPE_LENGTH (result_type
) = TYPE_LENGTH (check_typedef (index_type
));
916 TYPE_RANGE_DATA (result_type
) = (struct range_bounds
*)
917 TYPE_ZALLOC (result_type
, sizeof (struct range_bounds
));
918 TYPE_RANGE_DATA (result_type
)->low
= *low_bound
;
919 TYPE_RANGE_DATA (result_type
)->high
= *high_bound
;
921 if (low_bound
->kind
== PROP_CONST
&& low_bound
->data
.const_val
>= 0)
922 TYPE_UNSIGNED (result_type
) = 1;
924 /* Ada allows the declaration of range types whose upper bound is
925 less than the lower bound, so checking the lower bound is not
926 enough. Make sure we do not mark a range type whose upper bound
927 is negative as unsigned. */
928 if (high_bound
->kind
== PROP_CONST
&& high_bound
->data
.const_val
< 0)
929 TYPE_UNSIGNED (result_type
) = 0;
934 /* Create a range type using either a blank type supplied in
935 RESULT_TYPE, or creating a new type, inheriting the objfile from
938 Indices will be of type INDEX_TYPE, and will range from LOW_BOUND
939 to HIGH_BOUND, inclusive.
941 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
942 sure it is TYPE_CODE_UNDEF before we bash it into a range type? */
945 create_static_range_type (struct type
*result_type
, struct type
*index_type
,
946 LONGEST low_bound
, LONGEST high_bound
)
948 struct dynamic_prop low
, high
;
950 low
.kind
= PROP_CONST
;
951 low
.data
.const_val
= low_bound
;
953 high
.kind
= PROP_CONST
;
954 high
.data
.const_val
= high_bound
;
956 result_type
= create_range_type (result_type
, index_type
, &low
, &high
);
961 /* Predicate tests whether BOUNDS are static. Returns 1 if all bounds values
962 are static, otherwise returns 0. */
965 has_static_range (const struct range_bounds
*bounds
)
967 return (bounds
->low
.kind
== PROP_CONST
968 && bounds
->high
.kind
== PROP_CONST
);
972 /* Set *LOWP and *HIGHP to the lower and upper bounds of discrete type
973 TYPE. Return 1 if type is a range type, 0 if it is discrete (and
974 bounds will fit in LONGEST), or -1 otherwise. */
977 get_discrete_bounds (struct type
*type
, LONGEST
*lowp
, LONGEST
*highp
)
979 type
= check_typedef (type
);
980 switch (TYPE_CODE (type
))
982 case TYPE_CODE_RANGE
:
983 *lowp
= TYPE_LOW_BOUND (type
);
984 *highp
= TYPE_HIGH_BOUND (type
);
987 if (TYPE_NFIELDS (type
) > 0)
989 /* The enums may not be sorted by value, so search all
993 *lowp
= *highp
= TYPE_FIELD_ENUMVAL (type
, 0);
994 for (i
= 0; i
< TYPE_NFIELDS (type
); i
++)
996 if (TYPE_FIELD_ENUMVAL (type
, i
) < *lowp
)
997 *lowp
= TYPE_FIELD_ENUMVAL (type
, i
);
998 if (TYPE_FIELD_ENUMVAL (type
, i
) > *highp
)
999 *highp
= TYPE_FIELD_ENUMVAL (type
, i
);
1002 /* Set unsigned indicator if warranted. */
1005 TYPE_UNSIGNED (type
) = 1;
1014 case TYPE_CODE_BOOL
:
1019 if (TYPE_LENGTH (type
) > sizeof (LONGEST
)) /* Too big */
1021 if (!TYPE_UNSIGNED (type
))
1023 *lowp
= -(1 << (TYPE_LENGTH (type
) * TARGET_CHAR_BIT
- 1));
1024 *highp
= -*lowp
- 1;
1027 /* ... fall through for unsigned ints ... */
1028 case TYPE_CODE_CHAR
:
1030 /* This round-about calculation is to avoid shifting by
1031 TYPE_LENGTH (type) * TARGET_CHAR_BIT, which will not work
1032 if TYPE_LENGTH (type) == sizeof (LONGEST). */
1033 *highp
= 1 << (TYPE_LENGTH (type
) * TARGET_CHAR_BIT
- 1);
1034 *highp
= (*highp
- 1) | *highp
;
1041 /* Assuming TYPE is a simple, non-empty array type, compute its upper
1042 and lower bound. Save the low bound into LOW_BOUND if not NULL.
1043 Save the high bound into HIGH_BOUND if not NULL.
1045 Return 1 if the operation was successful. Return zero otherwise,
1046 in which case the values of LOW_BOUND and HIGH_BOUNDS are unmodified.
1048 We now simply use get_discrete_bounds call to get the values
1049 of the low and high bounds.
1050 get_discrete_bounds can return three values:
1051 1, meaning that index is a range,
1052 0, meaning that index is a discrete type,
1053 or -1 for failure. */
1056 get_array_bounds (struct type
*type
, LONGEST
*low_bound
, LONGEST
*high_bound
)
1058 struct type
*index
= TYPE_INDEX_TYPE (type
);
1066 res
= get_discrete_bounds (index
, &low
, &high
);
1070 /* Check if the array bounds are undefined. */
1072 && ((low_bound
&& TYPE_ARRAY_LOWER_BOUND_IS_UNDEFINED (type
))
1073 || (high_bound
&& TYPE_ARRAY_UPPER_BOUND_IS_UNDEFINED (type
))))
1085 /* Assuming that TYPE is a discrete type and VAL is a valid integer
1086 representation of a value of this type, save the corresponding
1087 position number in POS.
1089 Its differs from VAL only in the case of enumeration types. In
1090 this case, the position number of the value of the first listed
1091 enumeration literal is zero; the position number of the value of
1092 each subsequent enumeration literal is one more than that of its
1093 predecessor in the list.
1095 Return 1 if the operation was successful. Return zero otherwise,
1096 in which case the value of POS is unmodified.
1100 discrete_position (struct type
*type
, LONGEST val
, LONGEST
*pos
)
1102 if (TYPE_CODE (type
) == TYPE_CODE_ENUM
)
1106 for (i
= 0; i
< TYPE_NFIELDS (type
); i
+= 1)
1108 if (val
== TYPE_FIELD_ENUMVAL (type
, i
))
1114 /* Invalid enumeration value. */
1124 /* Create an array type using either a blank type supplied in
1125 RESULT_TYPE, or creating a new type, inheriting the objfile from
1128 Elements will be of type ELEMENT_TYPE, the indices will be of type
1131 BYTE_STRIDE_PROP, when not NULL, provides the array's byte stride.
1132 This byte stride property is added to the resulting array type
1133 as a DYN_PROP_BYTE_STRIDE. As a consequence, the BYTE_STRIDE_PROP
1134 argument can only be used to create types that are objfile-owned
1135 (see add_dyn_prop), meaning that either this function must be called
1136 with an objfile-owned RESULT_TYPE, or an objfile-owned RANGE_TYPE.
1138 BIT_STRIDE is taken into account only when BYTE_STRIDE_PROP is NULL.
1139 If BIT_STRIDE is not zero, build a packed array type whose element
1140 size is BIT_STRIDE. Otherwise, ignore this parameter.
1142 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
1143 sure it is TYPE_CODE_UNDEF before we bash it into an array
1147 create_array_type_with_stride (struct type
*result_type
,
1148 struct type
*element_type
,
1149 struct type
*range_type
,
1150 struct dynamic_prop
*byte_stride_prop
,
1151 unsigned int bit_stride
)
1153 if (byte_stride_prop
!= NULL
1154 && byte_stride_prop
->kind
== PROP_CONST
)
1156 /* The byte stride is actually not dynamic. Pretend we were
1157 called with bit_stride set instead of byte_stride_prop.
1158 This will give us the same result type, while avoiding
1159 the need to handle this as a special case. */
1160 bit_stride
= byte_stride_prop
->data
.const_val
* 8;
1161 byte_stride_prop
= NULL
;
1164 if (result_type
== NULL
)
1165 result_type
= alloc_type_copy (range_type
);
1167 TYPE_CODE (result_type
) = TYPE_CODE_ARRAY
;
1168 TYPE_TARGET_TYPE (result_type
) = element_type
;
1169 if (byte_stride_prop
== NULL
1170 && has_static_range (TYPE_RANGE_DATA (range_type
))
1171 && (!type_not_associated (result_type
)
1172 && !type_not_allocated (result_type
)))
1174 LONGEST low_bound
, high_bound
;
1176 if (get_discrete_bounds (range_type
, &low_bound
, &high_bound
) < 0)
1177 low_bound
= high_bound
= 0;
1178 element_type
= check_typedef (element_type
);
1179 /* Be careful when setting the array length. Ada arrays can be
1180 empty arrays with the high_bound being smaller than the low_bound.
1181 In such cases, the array length should be zero. */
1182 if (high_bound
< low_bound
)
1183 TYPE_LENGTH (result_type
) = 0;
1184 else if (bit_stride
> 0)
1185 TYPE_LENGTH (result_type
) =
1186 (bit_stride
* (high_bound
- low_bound
+ 1) + 7) / 8;
1188 TYPE_LENGTH (result_type
) =
1189 TYPE_LENGTH (element_type
) * (high_bound
- low_bound
+ 1);
1193 /* This type is dynamic and its length needs to be computed
1194 on demand. In the meantime, avoid leaving the TYPE_LENGTH
1195 undefined by setting it to zero. Although we are not expected
1196 to trust TYPE_LENGTH in this case, setting the size to zero
1197 allows us to avoid allocating objects of random sizes in case
1198 we accidently do. */
1199 TYPE_LENGTH (result_type
) = 0;
1202 TYPE_NFIELDS (result_type
) = 1;
1203 TYPE_FIELDS (result_type
) =
1204 (struct field
*) TYPE_ZALLOC (result_type
, sizeof (struct field
));
1205 TYPE_INDEX_TYPE (result_type
) = range_type
;
1206 if (byte_stride_prop
!= NULL
)
1207 add_dyn_prop (DYN_PROP_BYTE_STRIDE
, *byte_stride_prop
, result_type
);
1208 else if (bit_stride
> 0)
1209 TYPE_FIELD_BITSIZE (result_type
, 0) = bit_stride
;
1211 /* TYPE_TARGET_STUB will take care of zero length arrays. */
1212 if (TYPE_LENGTH (result_type
) == 0)
1213 TYPE_TARGET_STUB (result_type
) = 1;
1218 /* Same as create_array_type_with_stride but with no bit_stride
1219 (BIT_STRIDE = 0), thus building an unpacked array. */
1222 create_array_type (struct type
*result_type
,
1223 struct type
*element_type
,
1224 struct type
*range_type
)
1226 return create_array_type_with_stride (result_type
, element_type
,
1227 range_type
, NULL
, 0);
1231 lookup_array_range_type (struct type
*element_type
,
1232 LONGEST low_bound
, LONGEST high_bound
)
1234 struct type
*index_type
;
1235 struct type
*range_type
;
1237 if (TYPE_OBJFILE_OWNED (element_type
))
1238 index_type
= objfile_type (TYPE_OWNER (element_type
).objfile
)->builtin_int
;
1240 index_type
= builtin_type (get_type_arch (element_type
))->builtin_int
;
1241 range_type
= create_static_range_type (NULL
, index_type
,
1242 low_bound
, high_bound
);
1244 return create_array_type (NULL
, element_type
, range_type
);
1247 /* Create a string type using either a blank type supplied in
1248 RESULT_TYPE, or creating a new type. String types are similar
1249 enough to array of char types that we can use create_array_type to
1250 build the basic type and then bash it into a string type.
1252 For fixed length strings, the range type contains 0 as the lower
1253 bound and the length of the string minus one as the upper bound.
1255 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
1256 sure it is TYPE_CODE_UNDEF before we bash it into a string
1260 create_string_type (struct type
*result_type
,
1261 struct type
*string_char_type
,
1262 struct type
*range_type
)
1264 result_type
= create_array_type (result_type
,
1267 TYPE_CODE (result_type
) = TYPE_CODE_STRING
;
1272 lookup_string_range_type (struct type
*string_char_type
,
1273 LONGEST low_bound
, LONGEST high_bound
)
1275 struct type
*result_type
;
1277 result_type
= lookup_array_range_type (string_char_type
,
1278 low_bound
, high_bound
);
1279 TYPE_CODE (result_type
) = TYPE_CODE_STRING
;
1284 create_set_type (struct type
*result_type
, struct type
*domain_type
)
1286 if (result_type
== NULL
)
1287 result_type
= alloc_type_copy (domain_type
);
1289 TYPE_CODE (result_type
) = TYPE_CODE_SET
;
1290 TYPE_NFIELDS (result_type
) = 1;
1291 TYPE_FIELDS (result_type
)
1292 = (struct field
*) TYPE_ZALLOC (result_type
, sizeof (struct field
));
1294 if (!TYPE_STUB (domain_type
))
1296 LONGEST low_bound
, high_bound
, bit_length
;
1298 if (get_discrete_bounds (domain_type
, &low_bound
, &high_bound
) < 0)
1299 low_bound
= high_bound
= 0;
1300 bit_length
= high_bound
- low_bound
+ 1;
1301 TYPE_LENGTH (result_type
)
1302 = (bit_length
+ TARGET_CHAR_BIT
- 1) / TARGET_CHAR_BIT
;
1304 TYPE_UNSIGNED (result_type
) = 1;
1306 TYPE_FIELD_TYPE (result_type
, 0) = domain_type
;
1311 /* Convert ARRAY_TYPE to a vector type. This may modify ARRAY_TYPE
1312 and any array types nested inside it. */
1315 make_vector_type (struct type
*array_type
)
1317 struct type
*inner_array
, *elt_type
;
1320 /* Find the innermost array type, in case the array is
1321 multi-dimensional. */
1322 inner_array
= array_type
;
1323 while (TYPE_CODE (TYPE_TARGET_TYPE (inner_array
)) == TYPE_CODE_ARRAY
)
1324 inner_array
= TYPE_TARGET_TYPE (inner_array
);
1326 elt_type
= TYPE_TARGET_TYPE (inner_array
);
1327 if (TYPE_CODE (elt_type
) == TYPE_CODE_INT
)
1329 flags
= TYPE_INSTANCE_FLAGS (elt_type
) | TYPE_INSTANCE_FLAG_NOTTEXT
;
1330 elt_type
= make_qualified_type (elt_type
, flags
, NULL
);
1331 TYPE_TARGET_TYPE (inner_array
) = elt_type
;
1334 TYPE_VECTOR (array_type
) = 1;
1338 init_vector_type (struct type
*elt_type
, int n
)
1340 struct type
*array_type
;
1342 array_type
= lookup_array_range_type (elt_type
, 0, n
- 1);
1343 make_vector_type (array_type
);
1347 /* Internal routine called by TYPE_SELF_TYPE to return the type that TYPE
1348 belongs to. In c++ this is the class of "this", but TYPE_THIS_TYPE is too
1349 confusing. "self" is a common enough replacement for "this".
1350 TYPE must be one of TYPE_CODE_METHODPTR, TYPE_CODE_MEMBERPTR, or
1351 TYPE_CODE_METHOD. */
1354 internal_type_self_type (struct type
*type
)
1356 switch (TYPE_CODE (type
))
1358 case TYPE_CODE_METHODPTR
:
1359 case TYPE_CODE_MEMBERPTR
:
1360 if (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_NONE
)
1362 gdb_assert (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_SELF_TYPE
);
1363 return TYPE_MAIN_TYPE (type
)->type_specific
.self_type
;
1364 case TYPE_CODE_METHOD
:
1365 if (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_NONE
)
1367 gdb_assert (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_FUNC
);
1368 return TYPE_MAIN_TYPE (type
)->type_specific
.func_stuff
->self_type
;
1370 gdb_assert_not_reached ("bad type");
1374 /* Set the type of the class that TYPE belongs to.
1375 In c++ this is the class of "this".
1376 TYPE must be one of TYPE_CODE_METHODPTR, TYPE_CODE_MEMBERPTR, or
1377 TYPE_CODE_METHOD. */
1380 set_type_self_type (struct type
*type
, struct type
*self_type
)
1382 switch (TYPE_CODE (type
))
1384 case TYPE_CODE_METHODPTR
:
1385 case TYPE_CODE_MEMBERPTR
:
1386 if (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_NONE
)
1387 TYPE_SPECIFIC_FIELD (type
) = TYPE_SPECIFIC_SELF_TYPE
;
1388 gdb_assert (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_SELF_TYPE
);
1389 TYPE_MAIN_TYPE (type
)->type_specific
.self_type
= self_type
;
1391 case TYPE_CODE_METHOD
:
1392 if (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_NONE
)
1393 INIT_FUNC_SPECIFIC (type
);
1394 gdb_assert (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_FUNC
);
1395 TYPE_MAIN_TYPE (type
)->type_specific
.func_stuff
->self_type
= self_type
;
1398 gdb_assert_not_reached ("bad type");
1402 /* Smash TYPE to be a type of pointers to members of SELF_TYPE with type
1403 TO_TYPE. A member pointer is a wierd thing -- it amounts to a
1404 typed offset into a struct, e.g. "an int at offset 8". A MEMBER
1405 TYPE doesn't include the offset (that's the value of the MEMBER
1406 itself), but does include the structure type into which it points
1409 When "smashing" the type, we preserve the objfile that the old type
1410 pointed to, since we aren't changing where the type is actually
1414 smash_to_memberptr_type (struct type
*type
, struct type
*self_type
,
1415 struct type
*to_type
)
1418 TYPE_CODE (type
) = TYPE_CODE_MEMBERPTR
;
1419 TYPE_TARGET_TYPE (type
) = to_type
;
1420 set_type_self_type (type
, self_type
);
1421 /* Assume that a data member pointer is the same size as a normal
1424 = gdbarch_ptr_bit (get_type_arch (to_type
)) / TARGET_CHAR_BIT
;
1427 /* Smash TYPE to be a type of pointer to methods type TO_TYPE.
1429 When "smashing" the type, we preserve the objfile that the old type
1430 pointed to, since we aren't changing where the type is actually
1434 smash_to_methodptr_type (struct type
*type
, struct type
*to_type
)
1437 TYPE_CODE (type
) = TYPE_CODE_METHODPTR
;
1438 TYPE_TARGET_TYPE (type
) = to_type
;
1439 set_type_self_type (type
, TYPE_SELF_TYPE (to_type
));
1440 TYPE_LENGTH (type
) = cplus_method_ptr_size (to_type
);
1443 /* Smash TYPE to be a type of method of SELF_TYPE with type TO_TYPE.
1444 METHOD just means `function that gets an extra "this" argument'.
1446 When "smashing" the type, we preserve the objfile that the old type
1447 pointed to, since we aren't changing where the type is actually
1451 smash_to_method_type (struct type
*type
, struct type
*self_type
,
1452 struct type
*to_type
, struct field
*args
,
1453 int nargs
, int varargs
)
1456 TYPE_CODE (type
) = TYPE_CODE_METHOD
;
1457 TYPE_TARGET_TYPE (type
) = to_type
;
1458 set_type_self_type (type
, self_type
);
1459 TYPE_FIELDS (type
) = args
;
1460 TYPE_NFIELDS (type
) = nargs
;
1462 TYPE_VARARGS (type
) = 1;
1463 TYPE_LENGTH (type
) = 1; /* In practice, this is never needed. */
1466 /* Return a typename for a struct/union/enum type without "struct ",
1467 "union ", or "enum ". If the type has a NULL name, return NULL. */
1470 type_name_no_tag (const struct type
*type
)
1472 if (TYPE_TAG_NAME (type
) != NULL
)
1473 return TYPE_TAG_NAME (type
);
1475 /* Is there code which expects this to return the name if there is
1476 no tag name? My guess is that this is mainly used for C++ in
1477 cases where the two will always be the same. */
1478 return TYPE_NAME (type
);
1481 /* A wrapper of type_name_no_tag which calls error if the type is anonymous.
1482 Since GCC PR debug/47510 DWARF provides associated information to detect the
1483 anonymous class linkage name from its typedef.
1485 Parameter TYPE should not yet have CHECK_TYPEDEF applied, this function will
1489 type_name_no_tag_or_error (struct type
*type
)
1491 struct type
*saved_type
= type
;
1493 struct objfile
*objfile
;
1495 type
= check_typedef (type
);
1497 name
= type_name_no_tag (type
);
1501 name
= type_name_no_tag (saved_type
);
1502 objfile
= TYPE_OBJFILE (saved_type
);
1503 error (_("Invalid anonymous type %s [in module %s], GCC PR debug/47510 bug?"),
1504 name
? name
: "<anonymous>",
1505 objfile
? objfile_name (objfile
) : "<arch>");
1508 /* Lookup a typedef or primitive type named NAME, visible in lexical
1509 block BLOCK. If NOERR is nonzero, return zero if NAME is not
1510 suitably defined. */
1513 lookup_typename (const struct language_defn
*language
,
1514 struct gdbarch
*gdbarch
, const char *name
,
1515 const struct block
*block
, int noerr
)
1519 sym
= lookup_symbol_in_language (name
, block
, VAR_DOMAIN
,
1520 language
->la_language
, NULL
).symbol
;
1521 if (sym
!= NULL
&& SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
1522 return SYMBOL_TYPE (sym
);
1526 error (_("No type named %s."), name
);
1530 lookup_unsigned_typename (const struct language_defn
*language
,
1531 struct gdbarch
*gdbarch
, const char *name
)
1533 char *uns
= (char *) alloca (strlen (name
) + 10);
1535 strcpy (uns
, "unsigned ");
1536 strcpy (uns
+ 9, name
);
1537 return lookup_typename (language
, gdbarch
, uns
, (struct block
*) NULL
, 0);
1541 lookup_signed_typename (const struct language_defn
*language
,
1542 struct gdbarch
*gdbarch
, const char *name
)
1545 char *uns
= (char *) alloca (strlen (name
) + 8);
1547 strcpy (uns
, "signed ");
1548 strcpy (uns
+ 7, name
);
1549 t
= lookup_typename (language
, gdbarch
, uns
, (struct block
*) NULL
, 1);
1550 /* If we don't find "signed FOO" just try again with plain "FOO". */
1553 return lookup_typename (language
, gdbarch
, name
, (struct block
*) NULL
, 0);
1556 /* Lookup a structure type named "struct NAME",
1557 visible in lexical block BLOCK. */
1560 lookup_struct (const char *name
, const struct block
*block
)
1564 sym
= lookup_symbol (name
, block
, STRUCT_DOMAIN
, 0).symbol
;
1568 error (_("No struct type named %s."), name
);
1570 if (TYPE_CODE (SYMBOL_TYPE (sym
)) != TYPE_CODE_STRUCT
)
1572 error (_("This context has class, union or enum %s, not a struct."),
1575 return (SYMBOL_TYPE (sym
));
1578 /* Lookup a union type named "union NAME",
1579 visible in lexical block BLOCK. */
1582 lookup_union (const char *name
, const struct block
*block
)
1587 sym
= lookup_symbol (name
, block
, STRUCT_DOMAIN
, 0).symbol
;
1590 error (_("No union type named %s."), name
);
1592 t
= SYMBOL_TYPE (sym
);
1594 if (TYPE_CODE (t
) == TYPE_CODE_UNION
)
1597 /* If we get here, it's not a union. */
1598 error (_("This context has class, struct or enum %s, not a union."),
1602 /* Lookup an enum type named "enum NAME",
1603 visible in lexical block BLOCK. */
1606 lookup_enum (const char *name
, const struct block
*block
)
1610 sym
= lookup_symbol (name
, block
, STRUCT_DOMAIN
, 0).symbol
;
1613 error (_("No enum type named %s."), name
);
1615 if (TYPE_CODE (SYMBOL_TYPE (sym
)) != TYPE_CODE_ENUM
)
1617 error (_("This context has class, struct or union %s, not an enum."),
1620 return (SYMBOL_TYPE (sym
));
1623 /* Lookup a template type named "template NAME<TYPE>",
1624 visible in lexical block BLOCK. */
1627 lookup_template_type (char *name
, struct type
*type
,
1628 const struct block
*block
)
1631 char *nam
= (char *)
1632 alloca (strlen (name
) + strlen (TYPE_NAME (type
)) + 4);
1636 strcat (nam
, TYPE_NAME (type
));
1637 strcat (nam
, " >"); /* FIXME, extra space still introduced in gcc? */
1639 sym
= lookup_symbol (nam
, block
, VAR_DOMAIN
, 0).symbol
;
1643 error (_("No template type named %s."), name
);
1645 if (TYPE_CODE (SYMBOL_TYPE (sym
)) != TYPE_CODE_STRUCT
)
1647 error (_("This context has class, union or enum %s, not a struct."),
1650 return (SYMBOL_TYPE (sym
));
1653 /* Given a type TYPE, lookup the type of the component of type named
1656 TYPE can be either a struct or union, or a pointer or reference to
1657 a struct or union. If it is a pointer or reference, its target
1658 type is automatically used. Thus '.' and '->' are interchangable,
1659 as specified for the definitions of the expression element types
1660 STRUCTOP_STRUCT and STRUCTOP_PTR.
1662 If NOERR is nonzero, return zero if NAME is not suitably defined.
1663 If NAME is the name of a baseclass type, return that type. */
1666 lookup_struct_elt_type (struct type
*type
, const char *name
, int noerr
)
1672 type
= check_typedef (type
);
1673 if (TYPE_CODE (type
) != TYPE_CODE_PTR
1674 && TYPE_CODE (type
) != TYPE_CODE_REF
)
1676 type
= TYPE_TARGET_TYPE (type
);
1679 if (TYPE_CODE (type
) != TYPE_CODE_STRUCT
1680 && TYPE_CODE (type
) != TYPE_CODE_UNION
)
1682 std::string type_name
= type_to_string (type
);
1683 error (_("Type %s is not a structure or union type."),
1684 type_name
.c_str ());
1688 /* FIXME: This change put in by Michael seems incorrect for the case
1689 where the structure tag name is the same as the member name.
1690 I.e. when doing "ptype bell->bar" for "struct foo { int bar; int
1691 foo; } bell;" Disabled by fnf. */
1695 type_name
= type_name_no_tag (type
);
1696 if (type_name
!= NULL
&& strcmp (type_name
, name
) == 0)
1701 for (i
= TYPE_NFIELDS (type
) - 1; i
>= TYPE_N_BASECLASSES (type
); i
--)
1703 const char *t_field_name
= TYPE_FIELD_NAME (type
, i
);
1705 if (t_field_name
&& (strcmp_iw (t_field_name
, name
) == 0))
1707 return TYPE_FIELD_TYPE (type
, i
);
1709 else if (!t_field_name
|| *t_field_name
== '\0')
1711 struct type
*subtype
1712 = lookup_struct_elt_type (TYPE_FIELD_TYPE (type
, i
), name
, 1);
1714 if (subtype
!= NULL
)
1719 /* OK, it's not in this class. Recursively check the baseclasses. */
1720 for (i
= TYPE_N_BASECLASSES (type
) - 1; i
>= 0; i
--)
1724 t
= lookup_struct_elt_type (TYPE_BASECLASS (type
, i
), name
, 1);
1736 std::string type_name
= type_to_string (type
);
1737 error (_("Type %s has no component named %s."), type_name
.c_str (), name
);
1740 /* Store in *MAX the largest number representable by unsigned integer type
1744 get_unsigned_type_max (struct type
*type
, ULONGEST
*max
)
1748 type
= check_typedef (type
);
1749 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_INT
&& TYPE_UNSIGNED (type
));
1750 gdb_assert (TYPE_LENGTH (type
) <= sizeof (ULONGEST
));
1752 /* Written this way to avoid overflow. */
1753 n
= TYPE_LENGTH (type
) * TARGET_CHAR_BIT
;
1754 *max
= ((((ULONGEST
) 1 << (n
- 1)) - 1) << 1) | 1;
1757 /* Store in *MIN, *MAX the smallest and largest numbers representable by
1758 signed integer type TYPE. */
1761 get_signed_type_minmax (struct type
*type
, LONGEST
*min
, LONGEST
*max
)
1765 type
= check_typedef (type
);
1766 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_INT
&& !TYPE_UNSIGNED (type
));
1767 gdb_assert (TYPE_LENGTH (type
) <= sizeof (LONGEST
));
1769 n
= TYPE_LENGTH (type
) * TARGET_CHAR_BIT
;
1770 *min
= -((ULONGEST
) 1 << (n
- 1));
1771 *max
= ((ULONGEST
) 1 << (n
- 1)) - 1;
1774 /* Internal routine called by TYPE_VPTR_FIELDNO to return the value of
1775 cplus_stuff.vptr_fieldno.
1777 cplus_stuff is initialized to cplus_struct_default which does not
1778 set vptr_fieldno to -1 for portability reasons (IWBN to use C99
1779 designated initializers). We cope with that here. */
1782 internal_type_vptr_fieldno (struct type
*type
)
1784 type
= check_typedef (type
);
1785 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_STRUCT
1786 || TYPE_CODE (type
) == TYPE_CODE_UNION
);
1787 if (!HAVE_CPLUS_STRUCT (type
))
1789 return TYPE_RAW_CPLUS_SPECIFIC (type
)->vptr_fieldno
;
1792 /* Set the value of cplus_stuff.vptr_fieldno. */
1795 set_type_vptr_fieldno (struct type
*type
, int fieldno
)
1797 type
= check_typedef (type
);
1798 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_STRUCT
1799 || TYPE_CODE (type
) == TYPE_CODE_UNION
);
1800 if (!HAVE_CPLUS_STRUCT (type
))
1801 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
1802 TYPE_RAW_CPLUS_SPECIFIC (type
)->vptr_fieldno
= fieldno
;
1805 /* Internal routine called by TYPE_VPTR_BASETYPE to return the value of
1806 cplus_stuff.vptr_basetype. */
1809 internal_type_vptr_basetype (struct type
*type
)
1811 type
= check_typedef (type
);
1812 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_STRUCT
1813 || TYPE_CODE (type
) == TYPE_CODE_UNION
);
1814 gdb_assert (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_CPLUS_STUFF
);
1815 return TYPE_RAW_CPLUS_SPECIFIC (type
)->vptr_basetype
;
1818 /* Set the value of cplus_stuff.vptr_basetype. */
1821 set_type_vptr_basetype (struct type
*type
, struct type
*basetype
)
1823 type
= check_typedef (type
);
1824 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_STRUCT
1825 || TYPE_CODE (type
) == TYPE_CODE_UNION
);
1826 if (!HAVE_CPLUS_STRUCT (type
))
1827 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
1828 TYPE_RAW_CPLUS_SPECIFIC (type
)->vptr_basetype
= basetype
;
1831 /* Lookup the vptr basetype/fieldno values for TYPE.
1832 If found store vptr_basetype in *BASETYPEP if non-NULL, and return
1833 vptr_fieldno. Also, if found and basetype is from the same objfile,
1835 If not found, return -1 and ignore BASETYPEP.
1836 Callers should be aware that in some cases (for example,
1837 the type or one of its baseclasses is a stub type and we are
1838 debugging a .o file, or the compiler uses DWARF-2 and is not GCC),
1839 this function will not be able to find the
1840 virtual function table pointer, and vptr_fieldno will remain -1 and
1841 vptr_basetype will remain NULL or incomplete. */
1844 get_vptr_fieldno (struct type
*type
, struct type
**basetypep
)
1846 type
= check_typedef (type
);
1848 if (TYPE_VPTR_FIELDNO (type
) < 0)
1852 /* We must start at zero in case the first (and only) baseclass
1853 is virtual (and hence we cannot share the table pointer). */
1854 for (i
= 0; i
< TYPE_N_BASECLASSES (type
); i
++)
1856 struct type
*baseclass
= check_typedef (TYPE_BASECLASS (type
, i
));
1858 struct type
*basetype
;
1860 fieldno
= get_vptr_fieldno (baseclass
, &basetype
);
1863 /* If the type comes from a different objfile we can't cache
1864 it, it may have a different lifetime. PR 2384 */
1865 if (TYPE_OBJFILE (type
) == TYPE_OBJFILE (basetype
))
1867 set_type_vptr_fieldno (type
, fieldno
);
1868 set_type_vptr_basetype (type
, basetype
);
1871 *basetypep
= basetype
;
1882 *basetypep
= TYPE_VPTR_BASETYPE (type
);
1883 return TYPE_VPTR_FIELDNO (type
);
1888 stub_noname_complaint (void)
1890 complaint (&symfile_complaints
, _("stub type has NULL name"));
1893 /* Return nonzero if TYPE has a DYN_PROP_BYTE_STRIDE dynamic property
1894 attached to it, and that property has a non-constant value. */
1897 array_type_has_dynamic_stride (struct type
*type
)
1899 struct dynamic_prop
*prop
= get_dyn_prop (DYN_PROP_BYTE_STRIDE
, type
);
1901 return (prop
!= NULL
&& prop
->kind
!= PROP_CONST
);
1904 /* Worker for is_dynamic_type. */
1907 is_dynamic_type_internal (struct type
*type
, int top_level
)
1909 type
= check_typedef (type
);
1911 /* We only want to recognize references at the outermost level. */
1912 if (top_level
&& TYPE_CODE (type
) == TYPE_CODE_REF
)
1913 type
= check_typedef (TYPE_TARGET_TYPE (type
));
1915 /* Types that have a dynamic TYPE_DATA_LOCATION are considered
1916 dynamic, even if the type itself is statically defined.
1917 From a user's point of view, this may appear counter-intuitive;
1918 but it makes sense in this context, because the point is to determine
1919 whether any part of the type needs to be resolved before it can
1921 if (TYPE_DATA_LOCATION (type
) != NULL
1922 && (TYPE_DATA_LOCATION_KIND (type
) == PROP_LOCEXPR
1923 || TYPE_DATA_LOCATION_KIND (type
) == PROP_LOCLIST
))
1926 if (TYPE_ASSOCIATED_PROP (type
))
1929 if (TYPE_ALLOCATED_PROP (type
))
1932 switch (TYPE_CODE (type
))
1934 case TYPE_CODE_RANGE
:
1936 /* A range type is obviously dynamic if it has at least one
1937 dynamic bound. But also consider the range type to be
1938 dynamic when its subtype is dynamic, even if the bounds
1939 of the range type are static. It allows us to assume that
1940 the subtype of a static range type is also static. */
1941 return (!has_static_range (TYPE_RANGE_DATA (type
))
1942 || is_dynamic_type_internal (TYPE_TARGET_TYPE (type
), 0));
1945 case TYPE_CODE_ARRAY
:
1947 gdb_assert (TYPE_NFIELDS (type
) == 1);
1949 /* The array is dynamic if either the bounds are dynamic... */
1950 if (is_dynamic_type_internal (TYPE_INDEX_TYPE (type
), 0))
1952 /* ... or the elements it contains have a dynamic contents... */
1953 if (is_dynamic_type_internal (TYPE_TARGET_TYPE (type
), 0))
1955 /* ... or if it has a dynamic stride... */
1956 if (array_type_has_dynamic_stride (type
))
1961 case TYPE_CODE_STRUCT
:
1962 case TYPE_CODE_UNION
:
1966 for (i
= 0; i
< TYPE_NFIELDS (type
); ++i
)
1967 if (!field_is_static (&TYPE_FIELD (type
, i
))
1968 && is_dynamic_type_internal (TYPE_FIELD_TYPE (type
, i
), 0))
1977 /* See gdbtypes.h. */
1980 is_dynamic_type (struct type
*type
)
1982 return is_dynamic_type_internal (type
, 1);
1985 static struct type
*resolve_dynamic_type_internal
1986 (struct type
*type
, struct property_addr_info
*addr_stack
, int top_level
);
1988 /* Given a dynamic range type (dyn_range_type) and a stack of
1989 struct property_addr_info elements, return a static version
1992 static struct type
*
1993 resolve_dynamic_range (struct type
*dyn_range_type
,
1994 struct property_addr_info
*addr_stack
)
1997 struct type
*static_range_type
, *static_target_type
;
1998 const struct dynamic_prop
*prop
;
1999 struct dynamic_prop low_bound
, high_bound
;
2001 gdb_assert (TYPE_CODE (dyn_range_type
) == TYPE_CODE_RANGE
);
2003 prop
= &TYPE_RANGE_DATA (dyn_range_type
)->low
;
2004 if (dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2006 low_bound
.kind
= PROP_CONST
;
2007 low_bound
.data
.const_val
= value
;
2011 low_bound
.kind
= PROP_UNDEFINED
;
2012 low_bound
.data
.const_val
= 0;
2015 prop
= &TYPE_RANGE_DATA (dyn_range_type
)->high
;
2016 if (dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2018 high_bound
.kind
= PROP_CONST
;
2019 high_bound
.data
.const_val
= value
;
2021 if (TYPE_RANGE_DATA (dyn_range_type
)->flag_upper_bound_is_count
)
2022 high_bound
.data
.const_val
2023 = low_bound
.data
.const_val
+ high_bound
.data
.const_val
- 1;
2027 high_bound
.kind
= PROP_UNDEFINED
;
2028 high_bound
.data
.const_val
= 0;
2032 = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (dyn_range_type
),
2034 static_range_type
= create_range_type (copy_type (dyn_range_type
),
2036 &low_bound
, &high_bound
);
2037 TYPE_RANGE_DATA (static_range_type
)->flag_bound_evaluated
= 1;
2038 return static_range_type
;
2041 /* Resolves dynamic bound values of an array type TYPE to static ones.
2042 ADDR_STACK is a stack of struct property_addr_info to be used
2043 if needed during the dynamic resolution. */
2045 static struct type
*
2046 resolve_dynamic_array (struct type
*type
,
2047 struct property_addr_info
*addr_stack
)
2050 struct type
*elt_type
;
2051 struct type
*range_type
;
2052 struct type
*ary_dim
;
2053 struct dynamic_prop
*prop
;
2054 unsigned int bit_stride
= 0;
2056 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_ARRAY
);
2058 type
= copy_type (type
);
2061 range_type
= check_typedef (TYPE_INDEX_TYPE (elt_type
));
2062 range_type
= resolve_dynamic_range (range_type
, addr_stack
);
2064 /* Resolve allocated/associated here before creating a new array type, which
2065 will update the length of the array accordingly. */
2066 prop
= TYPE_ALLOCATED_PROP (type
);
2067 if (prop
!= NULL
&& dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2069 TYPE_DYN_PROP_ADDR (prop
) = value
;
2070 TYPE_DYN_PROP_KIND (prop
) = PROP_CONST
;
2072 prop
= TYPE_ASSOCIATED_PROP (type
);
2073 if (prop
!= NULL
&& dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2075 TYPE_DYN_PROP_ADDR (prop
) = value
;
2076 TYPE_DYN_PROP_KIND (prop
) = PROP_CONST
;
2079 ary_dim
= check_typedef (TYPE_TARGET_TYPE (elt_type
));
2081 if (ary_dim
!= NULL
&& TYPE_CODE (ary_dim
) == TYPE_CODE_ARRAY
)
2082 elt_type
= resolve_dynamic_array (ary_dim
, addr_stack
);
2084 elt_type
= TYPE_TARGET_TYPE (type
);
2086 prop
= get_dyn_prop (DYN_PROP_BYTE_STRIDE
, type
);
2090 = dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
);
2094 remove_dyn_prop (DYN_PROP_BYTE_STRIDE
, type
);
2095 bit_stride
= (unsigned int) (value
* 8);
2099 /* Could be a bug in our code, but it could also happen
2100 if the DWARF info is not correct. Issue a warning,
2101 and assume no byte/bit stride (leave bit_stride = 0). */
2102 warning (_("cannot determine array stride for type %s"),
2103 TYPE_NAME (type
) ? TYPE_NAME (type
) : "<no name>");
2107 bit_stride
= TYPE_FIELD_BITSIZE (type
, 0);
2109 return create_array_type_with_stride (type
, elt_type
, range_type
, NULL
,
2113 /* Resolve dynamic bounds of members of the union TYPE to static
2114 bounds. ADDR_STACK is a stack of struct property_addr_info
2115 to be used if needed during the dynamic resolution. */
2117 static struct type
*
2118 resolve_dynamic_union (struct type
*type
,
2119 struct property_addr_info
*addr_stack
)
2121 struct type
*resolved_type
;
2123 unsigned int max_len
= 0;
2125 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_UNION
);
2127 resolved_type
= copy_type (type
);
2128 TYPE_FIELDS (resolved_type
)
2129 = (struct field
*) TYPE_ALLOC (resolved_type
,
2130 TYPE_NFIELDS (resolved_type
)
2131 * sizeof (struct field
));
2132 memcpy (TYPE_FIELDS (resolved_type
),
2134 TYPE_NFIELDS (resolved_type
) * sizeof (struct field
));
2135 for (i
= 0; i
< TYPE_NFIELDS (resolved_type
); ++i
)
2139 if (field_is_static (&TYPE_FIELD (type
, i
)))
2142 t
= resolve_dynamic_type_internal (TYPE_FIELD_TYPE (resolved_type
, i
),
2144 TYPE_FIELD_TYPE (resolved_type
, i
) = t
;
2145 if (TYPE_LENGTH (t
) > max_len
)
2146 max_len
= TYPE_LENGTH (t
);
2149 TYPE_LENGTH (resolved_type
) = max_len
;
2150 return resolved_type
;
2153 /* Resolve dynamic bounds of members of the struct TYPE to static
2154 bounds. ADDR_STACK is a stack of struct property_addr_info to
2155 be used if needed during the dynamic resolution. */
2157 static struct type
*
2158 resolve_dynamic_struct (struct type
*type
,
2159 struct property_addr_info
*addr_stack
)
2161 struct type
*resolved_type
;
2163 unsigned resolved_type_bit_length
= 0;
2165 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_STRUCT
);
2166 gdb_assert (TYPE_NFIELDS (type
) > 0);
2168 resolved_type
= copy_type (type
);
2169 TYPE_FIELDS (resolved_type
)
2170 = (struct field
*) TYPE_ALLOC (resolved_type
,
2171 TYPE_NFIELDS (resolved_type
)
2172 * sizeof (struct field
));
2173 memcpy (TYPE_FIELDS (resolved_type
),
2175 TYPE_NFIELDS (resolved_type
) * sizeof (struct field
));
2176 for (i
= 0; i
< TYPE_NFIELDS (resolved_type
); ++i
)
2178 unsigned new_bit_length
;
2179 struct property_addr_info pinfo
;
2181 if (field_is_static (&TYPE_FIELD (type
, i
)))
2184 /* As we know this field is not a static field, the field's
2185 field_loc_kind should be FIELD_LOC_KIND_BITPOS. Verify
2186 this is the case, but only trigger a simple error rather
2187 than an internal error if that fails. While failing
2188 that verification indicates a bug in our code, the error
2189 is not severe enough to suggest to the user he stops
2190 his debugging session because of it. */
2191 if (TYPE_FIELD_LOC_KIND (type
, i
) != FIELD_LOC_KIND_BITPOS
)
2192 error (_("Cannot determine struct field location"
2193 " (invalid location kind)"));
2195 pinfo
.type
= check_typedef (TYPE_FIELD_TYPE (type
, i
));
2196 pinfo
.valaddr
= addr_stack
->valaddr
;
2199 + (TYPE_FIELD_BITPOS (resolved_type
, i
) / TARGET_CHAR_BIT
));
2200 pinfo
.next
= addr_stack
;
2202 TYPE_FIELD_TYPE (resolved_type
, i
)
2203 = resolve_dynamic_type_internal (TYPE_FIELD_TYPE (resolved_type
, i
),
2205 gdb_assert (TYPE_FIELD_LOC_KIND (resolved_type
, i
)
2206 == FIELD_LOC_KIND_BITPOS
);
2208 new_bit_length
= TYPE_FIELD_BITPOS (resolved_type
, i
);
2209 if (TYPE_FIELD_BITSIZE (resolved_type
, i
) != 0)
2210 new_bit_length
+= TYPE_FIELD_BITSIZE (resolved_type
, i
);
2212 new_bit_length
+= (TYPE_LENGTH (TYPE_FIELD_TYPE (resolved_type
, i
))
2215 /* Normally, we would use the position and size of the last field
2216 to determine the size of the enclosing structure. But GCC seems
2217 to be encoding the position of some fields incorrectly when
2218 the struct contains a dynamic field that is not placed last.
2219 So we compute the struct size based on the field that has
2220 the highest position + size - probably the best we can do. */
2221 if (new_bit_length
> resolved_type_bit_length
)
2222 resolved_type_bit_length
= new_bit_length
;
2225 /* The length of a type won't change for fortran, but it does for C and Ada.
2226 For fortran the size of dynamic fields might change over time but not the
2227 type length of the structure. If we adapt it, we run into problems
2228 when calculating the element offset for arrays of structs. */
2229 if (current_language
->la_language
!= language_fortran
)
2230 TYPE_LENGTH (resolved_type
)
2231 = (resolved_type_bit_length
+ TARGET_CHAR_BIT
- 1) / TARGET_CHAR_BIT
;
2233 /* The Ada language uses this field as a cache for static fixed types: reset
2234 it as RESOLVED_TYPE must have its own static fixed type. */
2235 TYPE_TARGET_TYPE (resolved_type
) = NULL
;
2237 return resolved_type
;
2240 /* Worker for resolved_dynamic_type. */
2242 static struct type
*
2243 resolve_dynamic_type_internal (struct type
*type
,
2244 struct property_addr_info
*addr_stack
,
2247 struct type
*real_type
= check_typedef (type
);
2248 struct type
*resolved_type
= type
;
2249 struct dynamic_prop
*prop
;
2252 if (!is_dynamic_type_internal (real_type
, top_level
))
2255 if (TYPE_CODE (type
) == TYPE_CODE_TYPEDEF
)
2257 resolved_type
= copy_type (type
);
2258 TYPE_TARGET_TYPE (resolved_type
)
2259 = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (type
), addr_stack
,
2264 /* Before trying to resolve TYPE, make sure it is not a stub. */
2267 switch (TYPE_CODE (type
))
2271 struct property_addr_info pinfo
;
2273 pinfo
.type
= check_typedef (TYPE_TARGET_TYPE (type
));
2274 pinfo
.valaddr
= NULL
;
2275 if (addr_stack
->valaddr
!= NULL
)
2276 pinfo
.addr
= extract_typed_address (addr_stack
->valaddr
, type
);
2278 pinfo
.addr
= read_memory_typed_address (addr_stack
->addr
, type
);
2279 pinfo
.next
= addr_stack
;
2281 resolved_type
= copy_type (type
);
2282 TYPE_TARGET_TYPE (resolved_type
)
2283 = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (type
),
2288 case TYPE_CODE_ARRAY
:
2289 resolved_type
= resolve_dynamic_array (type
, addr_stack
);
2292 case TYPE_CODE_RANGE
:
2293 resolved_type
= resolve_dynamic_range (type
, addr_stack
);
2296 case TYPE_CODE_UNION
:
2297 resolved_type
= resolve_dynamic_union (type
, addr_stack
);
2300 case TYPE_CODE_STRUCT
:
2301 resolved_type
= resolve_dynamic_struct (type
, addr_stack
);
2306 /* Resolve data_location attribute. */
2307 prop
= TYPE_DATA_LOCATION (resolved_type
);
2309 && dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2311 TYPE_DYN_PROP_ADDR (prop
) = value
;
2312 TYPE_DYN_PROP_KIND (prop
) = PROP_CONST
;
2315 return resolved_type
;
2318 /* See gdbtypes.h */
2321 resolve_dynamic_type (struct type
*type
, const gdb_byte
*valaddr
,
2324 struct property_addr_info pinfo
2325 = {check_typedef (type
), valaddr
, addr
, NULL
};
2327 return resolve_dynamic_type_internal (type
, &pinfo
, 1);
2330 /* See gdbtypes.h */
2332 struct dynamic_prop
*
2333 get_dyn_prop (enum dynamic_prop_node_kind prop_kind
, const struct type
*type
)
2335 struct dynamic_prop_list
*node
= TYPE_DYN_PROP_LIST (type
);
2337 while (node
!= NULL
)
2339 if (node
->prop_kind
== prop_kind
)
2346 /* See gdbtypes.h */
2349 add_dyn_prop (enum dynamic_prop_node_kind prop_kind
, struct dynamic_prop prop
,
2352 struct dynamic_prop_list
*temp
;
2354 gdb_assert (TYPE_OBJFILE_OWNED (type
));
2356 temp
= XOBNEW (&TYPE_OBJFILE (type
)->objfile_obstack
,
2357 struct dynamic_prop_list
);
2358 temp
->prop_kind
= prop_kind
;
2360 temp
->next
= TYPE_DYN_PROP_LIST (type
);
2362 TYPE_DYN_PROP_LIST (type
) = temp
;
2365 /* Remove dynamic property from TYPE in case it exists. */
2368 remove_dyn_prop (enum dynamic_prop_node_kind prop_kind
,
2371 struct dynamic_prop_list
*prev_node
, *curr_node
;
2373 curr_node
= TYPE_DYN_PROP_LIST (type
);
2376 while (NULL
!= curr_node
)
2378 if (curr_node
->prop_kind
== prop_kind
)
2380 /* Update the linked list but don't free anything.
2381 The property was allocated on objstack and it is not known
2382 if we are on top of it. Nevertheless, everything is released
2383 when the complete objstack is freed. */
2384 if (NULL
== prev_node
)
2385 TYPE_DYN_PROP_LIST (type
) = curr_node
->next
;
2387 prev_node
->next
= curr_node
->next
;
2392 prev_node
= curr_node
;
2393 curr_node
= curr_node
->next
;
2397 /* Find the real type of TYPE. This function returns the real type,
2398 after removing all layers of typedefs, and completing opaque or stub
2399 types. Completion changes the TYPE argument, but stripping of
2402 Instance flags (e.g. const/volatile) are preserved as typedefs are
2403 stripped. If necessary a new qualified form of the underlying type
2406 NOTE: This will return a typedef if TYPE_TARGET_TYPE for the typedef has
2407 not been computed and we're either in the middle of reading symbols, or
2408 there was no name for the typedef in the debug info.
2410 NOTE: Lookup of opaque types can throw errors for invalid symbol files.
2411 QUITs in the symbol reading code can also throw.
2412 Thus this function can throw an exception.
2414 If TYPE is a TYPE_CODE_TYPEDEF, its length is updated to the length of
2417 If this is a stubbed struct (i.e. declared as struct foo *), see if
2418 we can find a full definition in some other file. If so, copy this
2419 definition, so we can use it in future. There used to be a comment
2420 (but not any code) that if we don't find a full definition, we'd
2421 set a flag so we don't spend time in the future checking the same
2422 type. That would be a mistake, though--we might load in more
2423 symbols which contain a full definition for the type. */
2426 check_typedef (struct type
*type
)
2428 struct type
*orig_type
= type
;
2429 /* While we're removing typedefs, we don't want to lose qualifiers.
2430 E.g., const/volatile. */
2431 int instance_flags
= TYPE_INSTANCE_FLAGS (type
);
2435 while (TYPE_CODE (type
) == TYPE_CODE_TYPEDEF
)
2437 if (!TYPE_TARGET_TYPE (type
))
2442 /* It is dangerous to call lookup_symbol if we are currently
2443 reading a symtab. Infinite recursion is one danger. */
2444 if (currently_reading_symtab
)
2445 return make_qualified_type (type
, instance_flags
, NULL
);
2447 name
= type_name_no_tag (type
);
2448 /* FIXME: shouldn't we separately check the TYPE_NAME and
2449 the TYPE_TAG_NAME, and look in STRUCT_DOMAIN and/or
2450 VAR_DOMAIN as appropriate? (this code was written before
2451 TYPE_NAME and TYPE_TAG_NAME were separate). */
2454 stub_noname_complaint ();
2455 return make_qualified_type (type
, instance_flags
, NULL
);
2457 sym
= lookup_symbol (name
, 0, STRUCT_DOMAIN
, 0).symbol
;
2459 TYPE_TARGET_TYPE (type
) = SYMBOL_TYPE (sym
);
2460 else /* TYPE_CODE_UNDEF */
2461 TYPE_TARGET_TYPE (type
) = alloc_type_arch (get_type_arch (type
));
2463 type
= TYPE_TARGET_TYPE (type
);
2465 /* Preserve the instance flags as we traverse down the typedef chain.
2467 Handling address spaces/classes is nasty, what do we do if there's a
2469 E.g., what if an outer typedef marks the type as class_1 and an inner
2470 typedef marks the type as class_2?
2471 This is the wrong place to do such error checking. We leave it to
2472 the code that created the typedef in the first place to flag the
2473 error. We just pick the outer address space (akin to letting the
2474 outer cast in a chain of casting win), instead of assuming
2475 "it can't happen". */
2477 const int ALL_SPACES
= (TYPE_INSTANCE_FLAG_CODE_SPACE
2478 | TYPE_INSTANCE_FLAG_DATA_SPACE
);
2479 const int ALL_CLASSES
= TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL
;
2480 int new_instance_flags
= TYPE_INSTANCE_FLAGS (type
);
2482 /* Treat code vs data spaces and address classes separately. */
2483 if ((instance_flags
& ALL_SPACES
) != 0)
2484 new_instance_flags
&= ~ALL_SPACES
;
2485 if ((instance_flags
& ALL_CLASSES
) != 0)
2486 new_instance_flags
&= ~ALL_CLASSES
;
2488 instance_flags
|= new_instance_flags
;
2492 /* If this is a struct/class/union with no fields, then check
2493 whether a full definition exists somewhere else. This is for
2494 systems where a type definition with no fields is issued for such
2495 types, instead of identifying them as stub types in the first
2498 if (TYPE_IS_OPAQUE (type
)
2499 && opaque_type_resolution
2500 && !currently_reading_symtab
)
2502 const char *name
= type_name_no_tag (type
);
2503 struct type
*newtype
;
2507 stub_noname_complaint ();
2508 return make_qualified_type (type
, instance_flags
, NULL
);
2510 newtype
= lookup_transparent_type (name
);
2514 /* If the resolved type and the stub are in the same
2515 objfile, then replace the stub type with the real deal.
2516 But if they're in separate objfiles, leave the stub
2517 alone; we'll just look up the transparent type every time
2518 we call check_typedef. We can't create pointers between
2519 types allocated to different objfiles, since they may
2520 have different lifetimes. Trying to copy NEWTYPE over to
2521 TYPE's objfile is pointless, too, since you'll have to
2522 move over any other types NEWTYPE refers to, which could
2523 be an unbounded amount of stuff. */
2524 if (TYPE_OBJFILE (newtype
) == TYPE_OBJFILE (type
))
2525 type
= make_qualified_type (newtype
,
2526 TYPE_INSTANCE_FLAGS (type
),
2532 /* Otherwise, rely on the stub flag being set for opaque/stubbed
2534 else if (TYPE_STUB (type
) && !currently_reading_symtab
)
2536 const char *name
= type_name_no_tag (type
);
2537 /* FIXME: shouldn't we separately check the TYPE_NAME and the
2538 TYPE_TAG_NAME, and look in STRUCT_DOMAIN and/or VAR_DOMAIN
2539 as appropriate? (this code was written before TYPE_NAME and
2540 TYPE_TAG_NAME were separate). */
2545 stub_noname_complaint ();
2546 return make_qualified_type (type
, instance_flags
, NULL
);
2548 sym
= lookup_symbol (name
, 0, STRUCT_DOMAIN
, 0).symbol
;
2551 /* Same as above for opaque types, we can replace the stub
2552 with the complete type only if they are in the same
2554 if (TYPE_OBJFILE (SYMBOL_TYPE(sym
)) == TYPE_OBJFILE (type
))
2555 type
= make_qualified_type (SYMBOL_TYPE (sym
),
2556 TYPE_INSTANCE_FLAGS (type
),
2559 type
= SYMBOL_TYPE (sym
);
2563 if (TYPE_TARGET_STUB (type
))
2565 struct type
*target_type
= check_typedef (TYPE_TARGET_TYPE (type
));
2567 if (TYPE_STUB (target_type
) || TYPE_TARGET_STUB (target_type
))
2569 /* Nothing we can do. */
2571 else if (TYPE_CODE (type
) == TYPE_CODE_RANGE
)
2573 TYPE_LENGTH (type
) = TYPE_LENGTH (target_type
);
2574 TYPE_TARGET_STUB (type
) = 0;
2578 type
= make_qualified_type (type
, instance_flags
, NULL
);
2580 /* Cache TYPE_LENGTH for future use. */
2581 TYPE_LENGTH (orig_type
) = TYPE_LENGTH (type
);
2586 /* Parse a type expression in the string [P..P+LENGTH). If an error
2587 occurs, silently return a void type. */
2589 static struct type
*
2590 safe_parse_type (struct gdbarch
*gdbarch
, char *p
, int length
)
2592 struct ui_file
*saved_gdb_stderr
;
2593 struct type
*type
= NULL
; /* Initialize to keep gcc happy. */
2595 /* Suppress error messages. */
2596 saved_gdb_stderr
= gdb_stderr
;
2597 gdb_stderr
= &null_stream
;
2599 /* Call parse_and_eval_type() without fear of longjmp()s. */
2602 type
= parse_and_eval_type (p
, length
);
2604 CATCH (except
, RETURN_MASK_ERROR
)
2606 type
= builtin_type (gdbarch
)->builtin_void
;
2610 /* Stop suppressing error messages. */
2611 gdb_stderr
= saved_gdb_stderr
;
2616 /* Ugly hack to convert method stubs into method types.
2618 He ain't kiddin'. This demangles the name of the method into a
2619 string including argument types, parses out each argument type,
2620 generates a string casting a zero to that type, evaluates the
2621 string, and stuffs the resulting type into an argtype vector!!!
2622 Then it knows the type of the whole function (including argument
2623 types for overloading), which info used to be in the stab's but was
2624 removed to hack back the space required for them. */
2627 check_stub_method (struct type
*type
, int method_id
, int signature_id
)
2629 struct gdbarch
*gdbarch
= get_type_arch (type
);
2631 char *mangled_name
= gdb_mangle_name (type
, method_id
, signature_id
);
2632 char *demangled_name
= gdb_demangle (mangled_name
,
2633 DMGL_PARAMS
| DMGL_ANSI
);
2634 char *argtypetext
, *p
;
2635 int depth
= 0, argcount
= 1;
2636 struct field
*argtypes
;
2639 /* Make sure we got back a function string that we can use. */
2641 p
= strchr (demangled_name
, '(');
2645 if (demangled_name
== NULL
|| p
== NULL
)
2646 error (_("Internal: Cannot demangle mangled name `%s'."),
2649 /* Now, read in the parameters that define this type. */
2654 if (*p
== '(' || *p
== '<')
2658 else if (*p
== ')' || *p
== '>')
2662 else if (*p
== ',' && depth
== 0)
2670 /* If we read one argument and it was ``void'', don't count it. */
2671 if (startswith (argtypetext
, "(void)"))
2674 /* We need one extra slot, for the THIS pointer. */
2676 argtypes
= (struct field
*)
2677 TYPE_ALLOC (type
, (argcount
+ 1) * sizeof (struct field
));
2680 /* Add THIS pointer for non-static methods. */
2681 f
= TYPE_FN_FIELDLIST1 (type
, method_id
);
2682 if (TYPE_FN_FIELD_STATIC_P (f
, signature_id
))
2686 argtypes
[0].type
= lookup_pointer_type (type
);
2690 if (*p
!= ')') /* () means no args, skip while. */
2695 if (depth
<= 0 && (*p
== ',' || *p
== ')'))
2697 /* Avoid parsing of ellipsis, they will be handled below.
2698 Also avoid ``void'' as above. */
2699 if (strncmp (argtypetext
, "...", p
- argtypetext
) != 0
2700 && strncmp (argtypetext
, "void", p
- argtypetext
) != 0)
2702 argtypes
[argcount
].type
=
2703 safe_parse_type (gdbarch
, argtypetext
, p
- argtypetext
);
2706 argtypetext
= p
+ 1;
2709 if (*p
== '(' || *p
== '<')
2713 else if (*p
== ')' || *p
== '>')
2722 TYPE_FN_FIELD_PHYSNAME (f
, signature_id
) = mangled_name
;
2724 /* Now update the old "stub" type into a real type. */
2725 mtype
= TYPE_FN_FIELD_TYPE (f
, signature_id
);
2726 /* MTYPE may currently be a function (TYPE_CODE_FUNC).
2727 We want a method (TYPE_CODE_METHOD). */
2728 smash_to_method_type (mtype
, type
, TYPE_TARGET_TYPE (mtype
),
2729 argtypes
, argcount
, p
[-2] == '.');
2730 TYPE_STUB (mtype
) = 0;
2731 TYPE_FN_FIELD_STUB (f
, signature_id
) = 0;
2733 xfree (demangled_name
);
2736 /* This is the external interface to check_stub_method, above. This
2737 function unstubs all of the signatures for TYPE's METHOD_ID method
2738 name. After calling this function TYPE_FN_FIELD_STUB will be
2739 cleared for each signature and TYPE_FN_FIELDLIST_NAME will be
2742 This function unfortunately can not die until stabs do. */
2745 check_stub_method_group (struct type
*type
, int method_id
)
2747 int len
= TYPE_FN_FIELDLIST_LENGTH (type
, method_id
);
2748 struct fn_field
*f
= TYPE_FN_FIELDLIST1 (type
, method_id
);
2749 int j
, found_stub
= 0;
2751 for (j
= 0; j
< len
; j
++)
2752 if (TYPE_FN_FIELD_STUB (f
, j
))
2755 check_stub_method (type
, method_id
, j
);
2758 /* GNU v3 methods with incorrect names were corrected when we read
2759 in type information, because it was cheaper to do it then. The
2760 only GNU v2 methods with incorrect method names are operators and
2761 destructors; destructors were also corrected when we read in type
2764 Therefore the only thing we need to handle here are v2 operator
2766 if (found_stub
&& !startswith (TYPE_FN_FIELD_PHYSNAME (f
, 0), "_Z"))
2769 char dem_opname
[256];
2771 ret
= cplus_demangle_opname (TYPE_FN_FIELDLIST_NAME (type
,
2773 dem_opname
, DMGL_ANSI
);
2775 ret
= cplus_demangle_opname (TYPE_FN_FIELDLIST_NAME (type
,
2779 TYPE_FN_FIELDLIST_NAME (type
, method_id
) = xstrdup (dem_opname
);
2783 /* Ensure it is in .rodata (if available) by workarounding GCC PR 44690. */
2784 const struct cplus_struct_type cplus_struct_default
= { };
2787 allocate_cplus_struct_type (struct type
*type
)
2789 if (HAVE_CPLUS_STRUCT (type
))
2790 /* Structure was already allocated. Nothing more to do. */
2793 TYPE_SPECIFIC_FIELD (type
) = TYPE_SPECIFIC_CPLUS_STUFF
;
2794 TYPE_RAW_CPLUS_SPECIFIC (type
) = (struct cplus_struct_type
*)
2795 TYPE_ALLOC (type
, sizeof (struct cplus_struct_type
));
2796 *(TYPE_RAW_CPLUS_SPECIFIC (type
)) = cplus_struct_default
;
2797 set_type_vptr_fieldno (type
, -1);
2800 const struct gnat_aux_type gnat_aux_default
=
2803 /* Set the TYPE's type-specific kind to TYPE_SPECIFIC_GNAT_STUFF,
2804 and allocate the associated gnat-specific data. The gnat-specific
2805 data is also initialized to gnat_aux_default. */
2808 allocate_gnat_aux_type (struct type
*type
)
2810 TYPE_SPECIFIC_FIELD (type
) = TYPE_SPECIFIC_GNAT_STUFF
;
2811 TYPE_GNAT_SPECIFIC (type
) = (struct gnat_aux_type
*)
2812 TYPE_ALLOC (type
, sizeof (struct gnat_aux_type
));
2813 *(TYPE_GNAT_SPECIFIC (type
)) = gnat_aux_default
;
2816 /* Helper function to initialize a newly allocated type. Set type code
2817 to CODE and initialize the type-specific fields accordingly. */
2820 set_type_code (struct type
*type
, enum type_code code
)
2822 TYPE_CODE (type
) = code
;
2826 case TYPE_CODE_STRUCT
:
2827 case TYPE_CODE_UNION
:
2828 case TYPE_CODE_NAMESPACE
:
2829 INIT_CPLUS_SPECIFIC (type
);
2832 TYPE_SPECIFIC_FIELD (type
) = TYPE_SPECIFIC_FLOATFORMAT
;
2834 case TYPE_CODE_FUNC
:
2835 INIT_FUNC_SPECIFIC (type
);
2840 /* Helper function to verify floating-point format and size.
2841 BIT is the type size in bits; if BIT equals -1, the size is
2842 determined by the floatformat. Returns size to be used. */
2845 verify_floatformat (int bit
, const struct floatformat
*floatformat
)
2847 gdb_assert (floatformat
!= NULL
);
2850 bit
= floatformat
->totalsize
;
2852 gdb_assert (bit
>= 0);
2853 gdb_assert (bit
>= floatformat
->totalsize
);
2858 /* Return the floating-point format for a floating-point variable of
2861 const struct floatformat
*
2862 floatformat_from_type (const struct type
*type
)
2864 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_FLT
);
2865 gdb_assert (TYPE_FLOATFORMAT (type
));
2866 return TYPE_FLOATFORMAT (type
);
2869 /* Helper function to initialize the standard scalar types.
2871 If NAME is non-NULL, then it is used to initialize the type name.
2872 Note that NAME is not copied; it is required to have a lifetime at
2873 least as long as OBJFILE. */
2876 init_type (struct objfile
*objfile
, enum type_code code
, int bit
,
2881 type
= alloc_type (objfile
);
2882 set_type_code (type
, code
);
2883 gdb_assert ((bit
% TARGET_CHAR_BIT
) == 0);
2884 TYPE_LENGTH (type
) = bit
/ TARGET_CHAR_BIT
;
2885 TYPE_NAME (type
) = name
;
2890 /* Allocate a TYPE_CODE_ERROR type structure associated with OBJFILE,
2891 to use with variables that have no debug info. NAME is the type
2894 static struct type
*
2895 init_nodebug_var_type (struct objfile
*objfile
, const char *name
)
2897 return init_type (objfile
, TYPE_CODE_ERROR
, 0, name
);
2900 /* Allocate a TYPE_CODE_INT type structure associated with OBJFILE.
2901 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
2902 the type's TYPE_UNSIGNED flag. NAME is the type name. */
2905 init_integer_type (struct objfile
*objfile
,
2906 int bit
, int unsigned_p
, const char *name
)
2910 t
= init_type (objfile
, TYPE_CODE_INT
, bit
, name
);
2912 TYPE_UNSIGNED (t
) = 1;
2917 /* Allocate a TYPE_CODE_CHAR type structure associated with OBJFILE.
2918 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
2919 the type's TYPE_UNSIGNED flag. NAME is the type name. */
2922 init_character_type (struct objfile
*objfile
,
2923 int bit
, int unsigned_p
, const char *name
)
2927 t
= init_type (objfile
, TYPE_CODE_CHAR
, bit
, name
);
2929 TYPE_UNSIGNED (t
) = 1;
2934 /* Allocate a TYPE_CODE_BOOL type structure associated with OBJFILE.
2935 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
2936 the type's TYPE_UNSIGNED flag. NAME is the type name. */
2939 init_boolean_type (struct objfile
*objfile
,
2940 int bit
, int unsigned_p
, const char *name
)
2944 t
= init_type (objfile
, TYPE_CODE_BOOL
, bit
, name
);
2946 TYPE_UNSIGNED (t
) = 1;
2951 /* Allocate a TYPE_CODE_FLT type structure associated with OBJFILE.
2952 BIT is the type size in bits; if BIT equals -1, the size is
2953 determined by the floatformat. NAME is the type name. Set the
2954 TYPE_FLOATFORMAT from FLOATFORMATS. */
2957 init_float_type (struct objfile
*objfile
,
2958 int bit
, const char *name
,
2959 const struct floatformat
**floatformats
)
2961 struct gdbarch
*gdbarch
= get_objfile_arch (objfile
);
2962 const struct floatformat
*fmt
= floatformats
[gdbarch_byte_order (gdbarch
)];
2965 bit
= verify_floatformat (bit
, fmt
);
2966 t
= init_type (objfile
, TYPE_CODE_FLT
, bit
, name
);
2967 TYPE_FLOATFORMAT (t
) = fmt
;
2972 /* Allocate a TYPE_CODE_DECFLOAT type structure associated with OBJFILE.
2973 BIT is the type size in bits. NAME is the type name. */
2976 init_decfloat_type (struct objfile
*objfile
, int bit
, const char *name
)
2980 t
= init_type (objfile
, TYPE_CODE_DECFLOAT
, bit
, name
);
2984 /* Allocate a TYPE_CODE_COMPLEX type structure associated with OBJFILE.
2985 NAME is the type name. TARGET_TYPE is the component float type. */
2988 init_complex_type (struct objfile
*objfile
,
2989 const char *name
, struct type
*target_type
)
2993 t
= init_type (objfile
, TYPE_CODE_COMPLEX
,
2994 2 * TYPE_LENGTH (target_type
) * TARGET_CHAR_BIT
, name
);
2995 TYPE_TARGET_TYPE (t
) = target_type
;
2999 /* Allocate a TYPE_CODE_PTR type structure associated with OBJFILE.
3000 BIT is the pointer type size in bits. NAME is the type name.
3001 TARGET_TYPE is the pointer target type. Always sets the pointer type's
3002 TYPE_UNSIGNED flag. */
3005 init_pointer_type (struct objfile
*objfile
,
3006 int bit
, const char *name
, struct type
*target_type
)
3010 t
= init_type (objfile
, TYPE_CODE_PTR
, bit
, name
);
3011 TYPE_TARGET_TYPE (t
) = target_type
;
3012 TYPE_UNSIGNED (t
) = 1;
3017 /* Queries on types. */
3020 can_dereference (struct type
*t
)
3022 /* FIXME: Should we return true for references as well as
3024 t
= check_typedef (t
);
3027 && TYPE_CODE (t
) == TYPE_CODE_PTR
3028 && TYPE_CODE (TYPE_TARGET_TYPE (t
)) != TYPE_CODE_VOID
);
3032 is_integral_type (struct type
*t
)
3034 t
= check_typedef (t
);
3037 && ((TYPE_CODE (t
) == TYPE_CODE_INT
)
3038 || (TYPE_CODE (t
) == TYPE_CODE_ENUM
)
3039 || (TYPE_CODE (t
) == TYPE_CODE_FLAGS
)
3040 || (TYPE_CODE (t
) == TYPE_CODE_CHAR
)
3041 || (TYPE_CODE (t
) == TYPE_CODE_RANGE
)
3042 || (TYPE_CODE (t
) == TYPE_CODE_BOOL
)));
3046 is_floating_type (struct type
*t
)
3048 t
= check_typedef (t
);
3051 && ((TYPE_CODE (t
) == TYPE_CODE_FLT
)
3052 || (TYPE_CODE (t
) == TYPE_CODE_DECFLOAT
)));
3055 /* Return true if TYPE is scalar. */
3058 is_scalar_type (struct type
*type
)
3060 type
= check_typedef (type
);
3062 switch (TYPE_CODE (type
))
3064 case TYPE_CODE_ARRAY
:
3065 case TYPE_CODE_STRUCT
:
3066 case TYPE_CODE_UNION
:
3068 case TYPE_CODE_STRING
:
3075 /* Return true if T is scalar, or a composite type which in practice has
3076 the memory layout of a scalar type. E.g., an array or struct with only
3077 one scalar element inside it, or a union with only scalar elements. */
3080 is_scalar_type_recursive (struct type
*t
)
3082 t
= check_typedef (t
);
3084 if (is_scalar_type (t
))
3086 /* Are we dealing with an array or string of known dimensions? */
3087 else if ((TYPE_CODE (t
) == TYPE_CODE_ARRAY
3088 || TYPE_CODE (t
) == TYPE_CODE_STRING
) && TYPE_NFIELDS (t
) == 1
3089 && TYPE_CODE (TYPE_INDEX_TYPE (t
)) == TYPE_CODE_RANGE
)
3091 LONGEST low_bound
, high_bound
;
3092 struct type
*elt_type
= check_typedef (TYPE_TARGET_TYPE (t
));
3094 get_discrete_bounds (TYPE_INDEX_TYPE (t
), &low_bound
, &high_bound
);
3096 return high_bound
== low_bound
&& is_scalar_type_recursive (elt_type
);
3098 /* Are we dealing with a struct with one element? */
3099 else if (TYPE_CODE (t
) == TYPE_CODE_STRUCT
&& TYPE_NFIELDS (t
) == 1)
3100 return is_scalar_type_recursive (TYPE_FIELD_TYPE (t
, 0));
3101 else if (TYPE_CODE (t
) == TYPE_CODE_UNION
)
3103 int i
, n
= TYPE_NFIELDS (t
);
3105 /* If all elements of the union are scalar, then the union is scalar. */
3106 for (i
= 0; i
< n
; i
++)
3107 if (!is_scalar_type_recursive (TYPE_FIELD_TYPE (t
, i
)))
3116 /* Return true is T is a class or a union. False otherwise. */
3119 class_or_union_p (const struct type
*t
)
3121 return (TYPE_CODE (t
) == TYPE_CODE_STRUCT
3122 || TYPE_CODE (t
) == TYPE_CODE_UNION
);
3125 /* A helper function which returns true if types A and B represent the
3126 "same" class type. This is true if the types have the same main
3127 type, or the same name. */
3130 class_types_same_p (const struct type
*a
, const struct type
*b
)
3132 return (TYPE_MAIN_TYPE (a
) == TYPE_MAIN_TYPE (b
)
3133 || (TYPE_NAME (a
) && TYPE_NAME (b
)
3134 && !strcmp (TYPE_NAME (a
), TYPE_NAME (b
))));
3137 /* If BASE is an ancestor of DCLASS return the distance between them.
3138 otherwise return -1;
3142 class B: public A {};
3143 class C: public B {};
3146 distance_to_ancestor (A, A, 0) = 0
3147 distance_to_ancestor (A, B, 0) = 1
3148 distance_to_ancestor (A, C, 0) = 2
3149 distance_to_ancestor (A, D, 0) = 3
3151 If PUBLIC is 1 then only public ancestors are considered,
3152 and the function returns the distance only if BASE is a public ancestor
3156 distance_to_ancestor (A, D, 1) = -1. */
3159 distance_to_ancestor (struct type
*base
, struct type
*dclass
, int is_public
)
3164 base
= check_typedef (base
);
3165 dclass
= check_typedef (dclass
);
3167 if (class_types_same_p (base
, dclass
))
3170 for (i
= 0; i
< TYPE_N_BASECLASSES (dclass
); i
++)
3172 if (is_public
&& ! BASETYPE_VIA_PUBLIC (dclass
, i
))
3175 d
= distance_to_ancestor (base
, TYPE_BASECLASS (dclass
, i
), is_public
);
3183 /* Check whether BASE is an ancestor or base class or DCLASS
3184 Return 1 if so, and 0 if not.
3185 Note: If BASE and DCLASS are of the same type, this function
3186 will return 1. So for some class A, is_ancestor (A, A) will
3190 is_ancestor (struct type
*base
, struct type
*dclass
)
3192 return distance_to_ancestor (base
, dclass
, 0) >= 0;
3195 /* Like is_ancestor, but only returns true when BASE is a public
3196 ancestor of DCLASS. */
3199 is_public_ancestor (struct type
*base
, struct type
*dclass
)
3201 return distance_to_ancestor (base
, dclass
, 1) >= 0;
3204 /* A helper function for is_unique_ancestor. */
3207 is_unique_ancestor_worker (struct type
*base
, struct type
*dclass
,
3209 const gdb_byte
*valaddr
, int embedded_offset
,
3210 CORE_ADDR address
, struct value
*val
)
3214 base
= check_typedef (base
);
3215 dclass
= check_typedef (dclass
);
3217 for (i
= 0; i
< TYPE_N_BASECLASSES (dclass
) && count
< 2; ++i
)
3222 iter
= check_typedef (TYPE_BASECLASS (dclass
, i
));
3224 this_offset
= baseclass_offset (dclass
, i
, valaddr
, embedded_offset
,
3227 if (class_types_same_p (base
, iter
))
3229 /* If this is the first subclass, set *OFFSET and set count
3230 to 1. Otherwise, if this is at the same offset as
3231 previous instances, do nothing. Otherwise, increment
3235 *offset
= this_offset
;
3238 else if (this_offset
== *offset
)
3246 count
+= is_unique_ancestor_worker (base
, iter
, offset
,
3248 embedded_offset
+ this_offset
,
3255 /* Like is_ancestor, but only returns true if BASE is a unique base
3256 class of the type of VAL. */
3259 is_unique_ancestor (struct type
*base
, struct value
*val
)
3263 return is_unique_ancestor_worker (base
, value_type (val
), &offset
,
3264 value_contents_for_printing (val
),
3265 value_embedded_offset (val
),
3266 value_address (val
), val
) == 1;
3270 /* Overload resolution. */
3272 /* Return the sum of the rank of A with the rank of B. */
3275 sum_ranks (struct rank a
, struct rank b
)
3278 c
.rank
= a
.rank
+ b
.rank
;
3279 c
.subrank
= a
.subrank
+ b
.subrank
;
3283 /* Compare rank A and B and return:
3285 1 if a is better than b
3286 -1 if b is better than a. */
3289 compare_ranks (struct rank a
, struct rank b
)
3291 if (a
.rank
== b
.rank
)
3293 if (a
.subrank
== b
.subrank
)
3295 if (a
.subrank
< b
.subrank
)
3297 if (a
.subrank
> b
.subrank
)
3301 if (a
.rank
< b
.rank
)
3304 /* a.rank > b.rank */
3308 /* Functions for overload resolution begin here. */
3310 /* Compare two badness vectors A and B and return the result.
3311 0 => A and B are identical
3312 1 => A and B are incomparable
3313 2 => A is better than B
3314 3 => A is worse than B */
3317 compare_badness (struct badness_vector
*a
, struct badness_vector
*b
)
3321 short found_pos
= 0; /* any positives in c? */
3322 short found_neg
= 0; /* any negatives in c? */
3324 /* differing lengths => incomparable */
3325 if (a
->length
!= b
->length
)
3328 /* Subtract b from a */
3329 for (i
= 0; i
< a
->length
; i
++)
3331 tmp
= compare_ranks (b
->rank
[i
], a
->rank
[i
]);
3341 return 1; /* incomparable */
3343 return 3; /* A > B */
3349 return 2; /* A < B */
3351 return 0; /* A == B */
3355 /* Rank a function by comparing its parameter types (PARMS, length
3356 NPARMS), to the types of an argument list (ARGS, length NARGS).
3357 Return a pointer to a badness vector. This has NARGS + 1
3360 struct badness_vector
*
3361 rank_function (struct type
**parms
, int nparms
,
3362 struct value
**args
, int nargs
)
3365 struct badness_vector
*bv
= XNEW (struct badness_vector
);
3366 int min_len
= nparms
< nargs
? nparms
: nargs
;
3368 bv
->length
= nargs
+ 1; /* add 1 for the length-match rank. */
3369 bv
->rank
= XNEWVEC (struct rank
, nargs
+ 1);
3371 /* First compare the lengths of the supplied lists.
3372 If there is a mismatch, set it to a high value. */
3374 /* pai/1997-06-03 FIXME: when we have debug info about default
3375 arguments and ellipsis parameter lists, we should consider those
3376 and rank the length-match more finely. */
3378 LENGTH_MATCH (bv
) = (nargs
!= nparms
)
3379 ? LENGTH_MISMATCH_BADNESS
3380 : EXACT_MATCH_BADNESS
;
3382 /* Now rank all the parameters of the candidate function. */
3383 for (i
= 1; i
<= min_len
; i
++)
3384 bv
->rank
[i
] = rank_one_type (parms
[i
- 1], value_type (args
[i
- 1]),
3387 /* If more arguments than parameters, add dummy entries. */
3388 for (i
= min_len
+ 1; i
<= nargs
; i
++)
3389 bv
->rank
[i
] = TOO_FEW_PARAMS_BADNESS
;
3394 /* Compare the names of two integer types, assuming that any sign
3395 qualifiers have been checked already. We do it this way because
3396 there may be an "int" in the name of one of the types. */
3399 integer_types_same_name_p (const char *first
, const char *second
)
3401 int first_p
, second_p
;
3403 /* If both are shorts, return 1; if neither is a short, keep
3405 first_p
= (strstr (first
, "short") != NULL
);
3406 second_p
= (strstr (second
, "short") != NULL
);
3407 if (first_p
&& second_p
)
3409 if (first_p
|| second_p
)
3412 /* Likewise for long. */
3413 first_p
= (strstr (first
, "long") != NULL
);
3414 second_p
= (strstr (second
, "long") != NULL
);
3415 if (first_p
&& second_p
)
3417 if (first_p
|| second_p
)
3420 /* Likewise for char. */
3421 first_p
= (strstr (first
, "char") != NULL
);
3422 second_p
= (strstr (second
, "char") != NULL
);
3423 if (first_p
&& second_p
)
3425 if (first_p
|| second_p
)
3428 /* They must both be ints. */
3432 /* Compares type A to type B returns 1 if the represent the same type
3436 types_equal (struct type
*a
, struct type
*b
)
3438 /* Identical type pointers. */
3439 /* However, this still doesn't catch all cases of same type for b
3440 and a. The reason is that builtin types are different from
3441 the same ones constructed from the object. */
3445 /* Resolve typedefs */
3446 if (TYPE_CODE (a
) == TYPE_CODE_TYPEDEF
)
3447 a
= check_typedef (a
);
3448 if (TYPE_CODE (b
) == TYPE_CODE_TYPEDEF
)
3449 b
= check_typedef (b
);
3451 /* If after resolving typedefs a and b are not of the same type
3452 code then they are not equal. */
3453 if (TYPE_CODE (a
) != TYPE_CODE (b
))
3456 /* If a and b are both pointers types or both reference types then
3457 they are equal of the same type iff the objects they refer to are
3458 of the same type. */
3459 if (TYPE_CODE (a
) == TYPE_CODE_PTR
3460 || TYPE_CODE (a
) == TYPE_CODE_REF
)
3461 return types_equal (TYPE_TARGET_TYPE (a
),
3462 TYPE_TARGET_TYPE (b
));
3464 /* Well, damnit, if the names are exactly the same, I'll say they
3465 are exactly the same. This happens when we generate method
3466 stubs. The types won't point to the same address, but they
3467 really are the same. */
3469 if (TYPE_NAME (a
) && TYPE_NAME (b
)
3470 && strcmp (TYPE_NAME (a
), TYPE_NAME (b
)) == 0)
3473 /* Check if identical after resolving typedefs. */
3477 /* Two function types are equal if their argument and return types
3479 if (TYPE_CODE (a
) == TYPE_CODE_FUNC
)
3483 if (TYPE_NFIELDS (a
) != TYPE_NFIELDS (b
))
3486 if (!types_equal (TYPE_TARGET_TYPE (a
), TYPE_TARGET_TYPE (b
)))
3489 for (i
= 0; i
< TYPE_NFIELDS (a
); ++i
)
3490 if (!types_equal (TYPE_FIELD_TYPE (a
, i
), TYPE_FIELD_TYPE (b
, i
)))
3499 /* Deep comparison of types. */
3501 /* An entry in the type-equality bcache. */
3503 typedef struct type_equality_entry
3505 struct type
*type1
, *type2
;
3506 } type_equality_entry_d
;
3508 DEF_VEC_O (type_equality_entry_d
);
3510 /* A helper function to compare two strings. Returns 1 if they are
3511 the same, 0 otherwise. Handles NULLs properly. */
3514 compare_maybe_null_strings (const char *s
, const char *t
)
3516 if (s
== NULL
&& t
!= NULL
)
3518 else if (s
!= NULL
&& t
== NULL
)
3520 else if (s
== NULL
&& t
== NULL
)
3522 return strcmp (s
, t
) == 0;
3525 /* A helper function for check_types_worklist that checks two types for
3526 "deep" equality. Returns non-zero if the types are considered the
3527 same, zero otherwise. */
3530 check_types_equal (struct type
*type1
, struct type
*type2
,
3531 VEC (type_equality_entry_d
) **worklist
)
3533 type1
= check_typedef (type1
);
3534 type2
= check_typedef (type2
);
3539 if (TYPE_CODE (type1
) != TYPE_CODE (type2
)
3540 || TYPE_LENGTH (type1
) != TYPE_LENGTH (type2
)
3541 || TYPE_UNSIGNED (type1
) != TYPE_UNSIGNED (type2
)
3542 || TYPE_NOSIGN (type1
) != TYPE_NOSIGN (type2
)
3543 || TYPE_VARARGS (type1
) != TYPE_VARARGS (type2
)
3544 || TYPE_VECTOR (type1
) != TYPE_VECTOR (type2
)
3545 || TYPE_NOTTEXT (type1
) != TYPE_NOTTEXT (type2
)
3546 || TYPE_INSTANCE_FLAGS (type1
) != TYPE_INSTANCE_FLAGS (type2
)
3547 || TYPE_NFIELDS (type1
) != TYPE_NFIELDS (type2
))
3550 if (!compare_maybe_null_strings (TYPE_TAG_NAME (type1
),
3551 TYPE_TAG_NAME (type2
)))
3553 if (!compare_maybe_null_strings (TYPE_NAME (type1
), TYPE_NAME (type2
)))
3556 if (TYPE_CODE (type1
) == TYPE_CODE_RANGE
)
3558 if (*TYPE_RANGE_DATA (type1
) != *TYPE_RANGE_DATA (type2
))
3565 for (i
= 0; i
< TYPE_NFIELDS (type1
); ++i
)
3567 const struct field
*field1
= &TYPE_FIELD (type1
, i
);
3568 const struct field
*field2
= &TYPE_FIELD (type2
, i
);
3569 struct type_equality_entry entry
;
3571 if (FIELD_ARTIFICIAL (*field1
) != FIELD_ARTIFICIAL (*field2
)
3572 || FIELD_BITSIZE (*field1
) != FIELD_BITSIZE (*field2
)
3573 || FIELD_LOC_KIND (*field1
) != FIELD_LOC_KIND (*field2
))
3575 if (!compare_maybe_null_strings (FIELD_NAME (*field1
),
3576 FIELD_NAME (*field2
)))
3578 switch (FIELD_LOC_KIND (*field1
))
3580 case FIELD_LOC_KIND_BITPOS
:
3581 if (FIELD_BITPOS (*field1
) != FIELD_BITPOS (*field2
))
3584 case FIELD_LOC_KIND_ENUMVAL
:
3585 if (FIELD_ENUMVAL (*field1
) != FIELD_ENUMVAL (*field2
))
3588 case FIELD_LOC_KIND_PHYSADDR
:
3589 if (FIELD_STATIC_PHYSADDR (*field1
)
3590 != FIELD_STATIC_PHYSADDR (*field2
))
3593 case FIELD_LOC_KIND_PHYSNAME
:
3594 if (!compare_maybe_null_strings (FIELD_STATIC_PHYSNAME (*field1
),
3595 FIELD_STATIC_PHYSNAME (*field2
)))
3598 case FIELD_LOC_KIND_DWARF_BLOCK
:
3600 struct dwarf2_locexpr_baton
*block1
, *block2
;
3602 block1
= FIELD_DWARF_BLOCK (*field1
);
3603 block2
= FIELD_DWARF_BLOCK (*field2
);
3604 if (block1
->per_cu
!= block2
->per_cu
3605 || block1
->size
!= block2
->size
3606 || memcmp (block1
->data
, block2
->data
, block1
->size
) != 0)
3611 internal_error (__FILE__
, __LINE__
, _("Unsupported field kind "
3612 "%d by check_types_equal"),
3613 FIELD_LOC_KIND (*field1
));
3616 entry
.type1
= FIELD_TYPE (*field1
);
3617 entry
.type2
= FIELD_TYPE (*field2
);
3618 VEC_safe_push (type_equality_entry_d
, *worklist
, &entry
);
3622 if (TYPE_TARGET_TYPE (type1
) != NULL
)
3624 struct type_equality_entry entry
;
3626 if (TYPE_TARGET_TYPE (type2
) == NULL
)
3629 entry
.type1
= TYPE_TARGET_TYPE (type1
);
3630 entry
.type2
= TYPE_TARGET_TYPE (type2
);
3631 VEC_safe_push (type_equality_entry_d
, *worklist
, &entry
);
3633 else if (TYPE_TARGET_TYPE (type2
) != NULL
)
3639 /* Check types on a worklist for equality. Returns zero if any pair
3640 is not equal, non-zero if they are all considered equal. */
3643 check_types_worklist (VEC (type_equality_entry_d
) **worklist
,
3644 struct bcache
*cache
)
3646 while (!VEC_empty (type_equality_entry_d
, *worklist
))
3648 struct type_equality_entry entry
;
3651 entry
= *VEC_last (type_equality_entry_d
, *worklist
);
3652 VEC_pop (type_equality_entry_d
, *worklist
);
3654 /* If the type pair has already been visited, we know it is
3656 bcache_full (&entry
, sizeof (entry
), cache
, &added
);
3660 if (check_types_equal (entry
.type1
, entry
.type2
, worklist
) == 0)
3667 /* Return non-zero if types TYPE1 and TYPE2 are equal, as determined by a
3668 "deep comparison". Otherwise return zero. */
3671 types_deeply_equal (struct type
*type1
, struct type
*type2
)
3673 struct gdb_exception except
= exception_none
;
3675 struct bcache
*cache
;
3676 VEC (type_equality_entry_d
) *worklist
= NULL
;
3677 struct type_equality_entry entry
;
3679 gdb_assert (type1
!= NULL
&& type2
!= NULL
);
3681 /* Early exit for the simple case. */
3685 cache
= bcache_xmalloc (NULL
, NULL
);
3687 entry
.type1
= type1
;
3688 entry
.type2
= type2
;
3689 VEC_safe_push (type_equality_entry_d
, worklist
, &entry
);
3691 /* check_types_worklist calls several nested helper functions, some
3692 of which can raise a GDB exception, so we just check and rethrow
3693 here. If there is a GDB exception, a comparison is not capable
3694 (or trusted), so exit. */
3697 result
= check_types_worklist (&worklist
, cache
);
3699 CATCH (ex
, RETURN_MASK_ALL
)
3705 bcache_xfree (cache
);
3706 VEC_free (type_equality_entry_d
, worklist
);
3708 /* Rethrow if there was a problem. */
3709 if (except
.reason
< 0)
3710 throw_exception (except
);
3715 /* Allocated status of type TYPE. Return zero if type TYPE is allocated.
3716 Otherwise return one. */
3719 type_not_allocated (const struct type
*type
)
3721 struct dynamic_prop
*prop
= TYPE_ALLOCATED_PROP (type
);
3723 return (prop
&& TYPE_DYN_PROP_KIND (prop
) == PROP_CONST
3724 && !TYPE_DYN_PROP_ADDR (prop
));
3727 /* Associated status of type TYPE. Return zero if type TYPE is associated.
3728 Otherwise return one. */
3731 type_not_associated (const struct type
*type
)
3733 struct dynamic_prop
*prop
= TYPE_ASSOCIATED_PROP (type
);
3735 return (prop
&& TYPE_DYN_PROP_KIND (prop
) == PROP_CONST
3736 && !TYPE_DYN_PROP_ADDR (prop
));
3739 /* Compare one type (PARM) for compatibility with another (ARG).
3740 * PARM is intended to be the parameter type of a function; and
3741 * ARG is the supplied argument's type. This function tests if
3742 * the latter can be converted to the former.
3743 * VALUE is the argument's value or NULL if none (or called recursively)
3745 * Return 0 if they are identical types;
3746 * Otherwise, return an integer which corresponds to how compatible
3747 * PARM is to ARG. The higher the return value, the worse the match.
3748 * Generally the "bad" conversions are all uniformly assigned a 100. */
3751 rank_one_type (struct type
*parm
, struct type
*arg
, struct value
*value
)
3753 struct rank rank
= {0,0};
3755 /* Resolve typedefs */
3756 if (TYPE_CODE (parm
) == TYPE_CODE_TYPEDEF
)
3757 parm
= check_typedef (parm
);
3758 if (TYPE_CODE (arg
) == TYPE_CODE_TYPEDEF
)
3759 arg
= check_typedef (arg
);
3761 if (TYPE_IS_REFERENCE (parm
) && value
!= NULL
)
3763 if (VALUE_LVAL (value
) == not_lval
)
3765 /* Rvalues should preferably bind to rvalue references or const
3766 lvalue references. */
3767 if (TYPE_CODE (parm
) == TYPE_CODE_RVALUE_REF
)
3768 rank
.subrank
= REFERENCE_CONVERSION_RVALUE
;
3769 else if (TYPE_CONST (TYPE_TARGET_TYPE (parm
)))
3770 rank
.subrank
= REFERENCE_CONVERSION_CONST_LVALUE
;
3772 return INCOMPATIBLE_TYPE_BADNESS
;
3773 return sum_ranks (rank
, REFERENCE_CONVERSION_BADNESS
);
3777 /* Lvalues should prefer lvalue overloads. */
3778 if (TYPE_CODE (parm
) == TYPE_CODE_RVALUE_REF
)
3780 rank
.subrank
= REFERENCE_CONVERSION_RVALUE
;
3781 return sum_ranks (rank
, REFERENCE_CONVERSION_BADNESS
);
3786 if (types_equal (parm
, arg
))
3788 struct type
*t1
= parm
;
3789 struct type
*t2
= arg
;
3791 /* For pointers and references, compare target type. */
3792 if (TYPE_CODE (parm
) == TYPE_CODE_PTR
|| TYPE_IS_REFERENCE (parm
))
3794 t1
= TYPE_TARGET_TYPE (parm
);
3795 t2
= TYPE_TARGET_TYPE (arg
);
3798 /* Make sure they are CV equal, too. */
3799 if (TYPE_CONST (t1
) != TYPE_CONST (t2
))
3800 rank
.subrank
|= CV_CONVERSION_CONST
;
3801 if (TYPE_VOLATILE (t1
) != TYPE_VOLATILE (t2
))
3802 rank
.subrank
|= CV_CONVERSION_VOLATILE
;
3803 if (rank
.subrank
!= 0)
3804 return sum_ranks (CV_CONVERSION_BADNESS
, rank
);
3805 return EXACT_MATCH_BADNESS
;
3808 /* See through references, since we can almost make non-references
3811 if (TYPE_IS_REFERENCE (arg
))
3812 return (sum_ranks (rank_one_type (parm
, TYPE_TARGET_TYPE (arg
), NULL
),
3813 REFERENCE_CONVERSION_BADNESS
));
3814 if (TYPE_IS_REFERENCE (parm
))
3815 return (sum_ranks (rank_one_type (TYPE_TARGET_TYPE (parm
), arg
, NULL
),
3816 REFERENCE_CONVERSION_BADNESS
));
3818 /* Debugging only. */
3819 fprintf_filtered (gdb_stderr
,
3820 "------ Arg is %s [%d], parm is %s [%d]\n",
3821 TYPE_NAME (arg
), TYPE_CODE (arg
),
3822 TYPE_NAME (parm
), TYPE_CODE (parm
));
3824 /* x -> y means arg of type x being supplied for parameter of type y. */
3826 switch (TYPE_CODE (parm
))
3829 switch (TYPE_CODE (arg
))
3833 /* Allowed pointer conversions are:
3834 (a) pointer to void-pointer conversion. */
3835 if (TYPE_CODE (TYPE_TARGET_TYPE (parm
)) == TYPE_CODE_VOID
)
3836 return VOID_PTR_CONVERSION_BADNESS
;
3838 /* (b) pointer to ancestor-pointer conversion. */
3839 rank
.subrank
= distance_to_ancestor (TYPE_TARGET_TYPE (parm
),
3840 TYPE_TARGET_TYPE (arg
),
3842 if (rank
.subrank
>= 0)
3843 return sum_ranks (BASE_PTR_CONVERSION_BADNESS
, rank
);
3845 return INCOMPATIBLE_TYPE_BADNESS
;
3846 case TYPE_CODE_ARRAY
:
3848 struct type
*t1
= TYPE_TARGET_TYPE (parm
);
3849 struct type
*t2
= TYPE_TARGET_TYPE (arg
);
3851 if (types_equal (t1
, t2
))
3853 /* Make sure they are CV equal. */
3854 if (TYPE_CONST (t1
) != TYPE_CONST (t2
))
3855 rank
.subrank
|= CV_CONVERSION_CONST
;
3856 if (TYPE_VOLATILE (t1
) != TYPE_VOLATILE (t2
))
3857 rank
.subrank
|= CV_CONVERSION_VOLATILE
;
3858 if (rank
.subrank
!= 0)
3859 return sum_ranks (CV_CONVERSION_BADNESS
, rank
);
3860 return EXACT_MATCH_BADNESS
;
3862 return INCOMPATIBLE_TYPE_BADNESS
;
3864 case TYPE_CODE_FUNC
:
3865 return rank_one_type (TYPE_TARGET_TYPE (parm
), arg
, NULL
);
3867 if (value
!= NULL
&& TYPE_CODE (value_type (value
)) == TYPE_CODE_INT
)
3869 if (value_as_long (value
) == 0)
3871 /* Null pointer conversion: allow it to be cast to a pointer.
3872 [4.10.1 of C++ standard draft n3290] */
3873 return NULL_POINTER_CONVERSION_BADNESS
;
3877 /* If type checking is disabled, allow the conversion. */
3878 if (!strict_type_checking
)
3879 return NS_INTEGER_POINTER_CONVERSION_BADNESS
;
3883 case TYPE_CODE_ENUM
:
3884 case TYPE_CODE_FLAGS
:
3885 case TYPE_CODE_CHAR
:
3886 case TYPE_CODE_RANGE
:
3887 case TYPE_CODE_BOOL
:
3889 return INCOMPATIBLE_TYPE_BADNESS
;
3891 case TYPE_CODE_ARRAY
:
3892 switch (TYPE_CODE (arg
))
3895 case TYPE_CODE_ARRAY
:
3896 return rank_one_type (TYPE_TARGET_TYPE (parm
),
3897 TYPE_TARGET_TYPE (arg
), NULL
);
3899 return INCOMPATIBLE_TYPE_BADNESS
;
3901 case TYPE_CODE_FUNC
:
3902 switch (TYPE_CODE (arg
))
3904 case TYPE_CODE_PTR
: /* funcptr -> func */
3905 return rank_one_type (parm
, TYPE_TARGET_TYPE (arg
), NULL
);
3907 return INCOMPATIBLE_TYPE_BADNESS
;
3910 switch (TYPE_CODE (arg
))
3913 if (TYPE_LENGTH (arg
) == TYPE_LENGTH (parm
))
3915 /* Deal with signed, unsigned, and plain chars and
3916 signed and unsigned ints. */
3917 if (TYPE_NOSIGN (parm
))
3919 /* This case only for character types. */
3920 if (TYPE_NOSIGN (arg
))
3921 return EXACT_MATCH_BADNESS
; /* plain char -> plain char */
3922 else /* signed/unsigned char -> plain char */
3923 return INTEGER_CONVERSION_BADNESS
;
3925 else if (TYPE_UNSIGNED (parm
))
3927 if (TYPE_UNSIGNED (arg
))
3929 /* unsigned int -> unsigned int, or
3930 unsigned long -> unsigned long */
3931 if (integer_types_same_name_p (TYPE_NAME (parm
),
3933 return EXACT_MATCH_BADNESS
;
3934 else if (integer_types_same_name_p (TYPE_NAME (arg
),
3936 && integer_types_same_name_p (TYPE_NAME (parm
),
3938 /* unsigned int -> unsigned long */
3939 return INTEGER_PROMOTION_BADNESS
;
3941 /* unsigned long -> unsigned int */
3942 return INTEGER_CONVERSION_BADNESS
;
3946 if (integer_types_same_name_p (TYPE_NAME (arg
),
3948 && integer_types_same_name_p (TYPE_NAME (parm
),
3950 /* signed long -> unsigned int */
3951 return INTEGER_CONVERSION_BADNESS
;
3953 /* signed int/long -> unsigned int/long */
3954 return INTEGER_CONVERSION_BADNESS
;
3957 else if (!TYPE_NOSIGN (arg
) && !TYPE_UNSIGNED (arg
))
3959 if (integer_types_same_name_p (TYPE_NAME (parm
),
3961 return EXACT_MATCH_BADNESS
;
3962 else if (integer_types_same_name_p (TYPE_NAME (arg
),
3964 && integer_types_same_name_p (TYPE_NAME (parm
),
3966 return INTEGER_PROMOTION_BADNESS
;
3968 return INTEGER_CONVERSION_BADNESS
;
3971 return INTEGER_CONVERSION_BADNESS
;
3973 else if (TYPE_LENGTH (arg
) < TYPE_LENGTH (parm
))
3974 return INTEGER_PROMOTION_BADNESS
;
3976 return INTEGER_CONVERSION_BADNESS
;
3977 case TYPE_CODE_ENUM
:
3978 case TYPE_CODE_FLAGS
:
3979 case TYPE_CODE_CHAR
:
3980 case TYPE_CODE_RANGE
:
3981 case TYPE_CODE_BOOL
:
3982 if (TYPE_DECLARED_CLASS (arg
))
3983 return INCOMPATIBLE_TYPE_BADNESS
;
3984 return INTEGER_PROMOTION_BADNESS
;
3986 return INT_FLOAT_CONVERSION_BADNESS
;
3988 return NS_POINTER_CONVERSION_BADNESS
;
3990 return INCOMPATIBLE_TYPE_BADNESS
;
3993 case TYPE_CODE_ENUM
:
3994 switch (TYPE_CODE (arg
))
3997 case TYPE_CODE_CHAR
:
3998 case TYPE_CODE_RANGE
:
3999 case TYPE_CODE_BOOL
:
4000 case TYPE_CODE_ENUM
:
4001 if (TYPE_DECLARED_CLASS (parm
) || TYPE_DECLARED_CLASS (arg
))
4002 return INCOMPATIBLE_TYPE_BADNESS
;
4003 return INTEGER_CONVERSION_BADNESS
;
4005 return INT_FLOAT_CONVERSION_BADNESS
;
4007 return INCOMPATIBLE_TYPE_BADNESS
;
4010 case TYPE_CODE_CHAR
:
4011 switch (TYPE_CODE (arg
))
4013 case TYPE_CODE_RANGE
:
4014 case TYPE_CODE_BOOL
:
4015 case TYPE_CODE_ENUM
:
4016 if (TYPE_DECLARED_CLASS (arg
))
4017 return INCOMPATIBLE_TYPE_BADNESS
;
4018 return INTEGER_CONVERSION_BADNESS
;
4020 return INT_FLOAT_CONVERSION_BADNESS
;
4022 if (TYPE_LENGTH (arg
) > TYPE_LENGTH (parm
))
4023 return INTEGER_CONVERSION_BADNESS
;
4024 else if (TYPE_LENGTH (arg
) < TYPE_LENGTH (parm
))
4025 return INTEGER_PROMOTION_BADNESS
;
4026 /* >>> !! else fall through !! <<< */
4027 case TYPE_CODE_CHAR
:
4028 /* Deal with signed, unsigned, and plain chars for C++ and
4029 with int cases falling through from previous case. */
4030 if (TYPE_NOSIGN (parm
))
4032 if (TYPE_NOSIGN (arg
))
4033 return EXACT_MATCH_BADNESS
;
4035 return INTEGER_CONVERSION_BADNESS
;
4037 else if (TYPE_UNSIGNED (parm
))
4039 if (TYPE_UNSIGNED (arg
))
4040 return EXACT_MATCH_BADNESS
;
4042 return INTEGER_PROMOTION_BADNESS
;
4044 else if (!TYPE_NOSIGN (arg
) && !TYPE_UNSIGNED (arg
))
4045 return EXACT_MATCH_BADNESS
;
4047 return INTEGER_CONVERSION_BADNESS
;
4049 return INCOMPATIBLE_TYPE_BADNESS
;
4052 case TYPE_CODE_RANGE
:
4053 switch (TYPE_CODE (arg
))
4056 case TYPE_CODE_CHAR
:
4057 case TYPE_CODE_RANGE
:
4058 case TYPE_CODE_BOOL
:
4059 case TYPE_CODE_ENUM
:
4060 return INTEGER_CONVERSION_BADNESS
;
4062 return INT_FLOAT_CONVERSION_BADNESS
;
4064 return INCOMPATIBLE_TYPE_BADNESS
;
4067 case TYPE_CODE_BOOL
:
4068 switch (TYPE_CODE (arg
))
4070 /* n3290 draft, section 4.12.1 (conv.bool):
4072 "A prvalue of arithmetic, unscoped enumeration, pointer, or
4073 pointer to member type can be converted to a prvalue of type
4074 bool. A zero value, null pointer value, or null member pointer
4075 value is converted to false; any other value is converted to
4076 true. A prvalue of type std::nullptr_t can be converted to a
4077 prvalue of type bool; the resulting value is false." */
4079 case TYPE_CODE_CHAR
:
4080 case TYPE_CODE_ENUM
:
4082 case TYPE_CODE_MEMBERPTR
:
4084 return BOOL_CONVERSION_BADNESS
;
4085 case TYPE_CODE_RANGE
:
4086 return INCOMPATIBLE_TYPE_BADNESS
;
4087 case TYPE_CODE_BOOL
:
4088 return EXACT_MATCH_BADNESS
;
4090 return INCOMPATIBLE_TYPE_BADNESS
;
4094 switch (TYPE_CODE (arg
))
4097 if (TYPE_LENGTH (arg
) < TYPE_LENGTH (parm
))
4098 return FLOAT_PROMOTION_BADNESS
;
4099 else if (TYPE_LENGTH (arg
) == TYPE_LENGTH (parm
))
4100 return EXACT_MATCH_BADNESS
;
4102 return FLOAT_CONVERSION_BADNESS
;
4104 case TYPE_CODE_BOOL
:
4105 case TYPE_CODE_ENUM
:
4106 case TYPE_CODE_RANGE
:
4107 case TYPE_CODE_CHAR
:
4108 return INT_FLOAT_CONVERSION_BADNESS
;
4110 return INCOMPATIBLE_TYPE_BADNESS
;
4113 case TYPE_CODE_COMPLEX
:
4114 switch (TYPE_CODE (arg
))
4115 { /* Strictly not needed for C++, but... */
4117 return FLOAT_PROMOTION_BADNESS
;
4118 case TYPE_CODE_COMPLEX
:
4119 return EXACT_MATCH_BADNESS
;
4121 return INCOMPATIBLE_TYPE_BADNESS
;
4124 case TYPE_CODE_STRUCT
:
4125 switch (TYPE_CODE (arg
))
4127 case TYPE_CODE_STRUCT
:
4128 /* Check for derivation */
4129 rank
.subrank
= distance_to_ancestor (parm
, arg
, 0);
4130 if (rank
.subrank
>= 0)
4131 return sum_ranks (BASE_CONVERSION_BADNESS
, rank
);
4132 /* else fall through */
4134 return INCOMPATIBLE_TYPE_BADNESS
;
4137 case TYPE_CODE_UNION
:
4138 switch (TYPE_CODE (arg
))
4140 case TYPE_CODE_UNION
:
4142 return INCOMPATIBLE_TYPE_BADNESS
;
4145 case TYPE_CODE_MEMBERPTR
:
4146 switch (TYPE_CODE (arg
))
4149 return INCOMPATIBLE_TYPE_BADNESS
;
4152 case TYPE_CODE_METHOD
:
4153 switch (TYPE_CODE (arg
))
4157 return INCOMPATIBLE_TYPE_BADNESS
;
4161 switch (TYPE_CODE (arg
))
4165 return INCOMPATIBLE_TYPE_BADNESS
;
4170 switch (TYPE_CODE (arg
))
4174 return rank_one_type (TYPE_FIELD_TYPE (parm
, 0),
4175 TYPE_FIELD_TYPE (arg
, 0), NULL
);
4177 return INCOMPATIBLE_TYPE_BADNESS
;
4180 case TYPE_CODE_VOID
:
4182 return INCOMPATIBLE_TYPE_BADNESS
;
4183 } /* switch (TYPE_CODE (arg)) */
4186 /* End of functions for overload resolution. */
4188 /* Routines to pretty-print types. */
4191 print_bit_vector (B_TYPE
*bits
, int nbits
)
4195 for (bitno
= 0; bitno
< nbits
; bitno
++)
4197 if ((bitno
% 8) == 0)
4199 puts_filtered (" ");
4201 if (B_TST (bits
, bitno
))
4202 printf_filtered (("1"));
4204 printf_filtered (("0"));
4208 /* Note the first arg should be the "this" pointer, we may not want to
4209 include it since we may get into a infinitely recursive
4213 print_args (struct field
*args
, int nargs
, int spaces
)
4219 for (i
= 0; i
< nargs
; i
++)
4221 printfi_filtered (spaces
, "[%d] name '%s'\n", i
,
4222 args
[i
].name
!= NULL
? args
[i
].name
: "<NULL>");
4223 recursive_dump_type (args
[i
].type
, spaces
+ 2);
4229 field_is_static (struct field
*f
)
4231 /* "static" fields are the fields whose location is not relative
4232 to the address of the enclosing struct. It would be nice to
4233 have a dedicated flag that would be set for static fields when
4234 the type is being created. But in practice, checking the field
4235 loc_kind should give us an accurate answer. */
4236 return (FIELD_LOC_KIND (*f
) == FIELD_LOC_KIND_PHYSNAME
4237 || FIELD_LOC_KIND (*f
) == FIELD_LOC_KIND_PHYSADDR
);
4241 dump_fn_fieldlists (struct type
*type
, int spaces
)
4247 printfi_filtered (spaces
, "fn_fieldlists ");
4248 gdb_print_host_address (TYPE_FN_FIELDLISTS (type
), gdb_stdout
);
4249 printf_filtered ("\n");
4250 for (method_idx
= 0; method_idx
< TYPE_NFN_FIELDS (type
); method_idx
++)
4252 f
= TYPE_FN_FIELDLIST1 (type
, method_idx
);
4253 printfi_filtered (spaces
+ 2, "[%d] name '%s' (",
4255 TYPE_FN_FIELDLIST_NAME (type
, method_idx
));
4256 gdb_print_host_address (TYPE_FN_FIELDLIST_NAME (type
, method_idx
),
4258 printf_filtered (_(") length %d\n"),
4259 TYPE_FN_FIELDLIST_LENGTH (type
, method_idx
));
4260 for (overload_idx
= 0;
4261 overload_idx
< TYPE_FN_FIELDLIST_LENGTH (type
, method_idx
);
4264 printfi_filtered (spaces
+ 4, "[%d] physname '%s' (",
4266 TYPE_FN_FIELD_PHYSNAME (f
, overload_idx
));
4267 gdb_print_host_address (TYPE_FN_FIELD_PHYSNAME (f
, overload_idx
),
4269 printf_filtered (")\n");
4270 printfi_filtered (spaces
+ 8, "type ");
4271 gdb_print_host_address (TYPE_FN_FIELD_TYPE (f
, overload_idx
),
4273 printf_filtered ("\n");
4275 recursive_dump_type (TYPE_FN_FIELD_TYPE (f
, overload_idx
),
4278 printfi_filtered (spaces
+ 8, "args ");
4279 gdb_print_host_address (TYPE_FN_FIELD_ARGS (f
, overload_idx
),
4281 printf_filtered ("\n");
4282 print_args (TYPE_FN_FIELD_ARGS (f
, overload_idx
),
4283 TYPE_NFIELDS (TYPE_FN_FIELD_TYPE (f
, overload_idx
)),
4285 printfi_filtered (spaces
+ 8, "fcontext ");
4286 gdb_print_host_address (TYPE_FN_FIELD_FCONTEXT (f
, overload_idx
),
4288 printf_filtered ("\n");
4290 printfi_filtered (spaces
+ 8, "is_const %d\n",
4291 TYPE_FN_FIELD_CONST (f
, overload_idx
));
4292 printfi_filtered (spaces
+ 8, "is_volatile %d\n",
4293 TYPE_FN_FIELD_VOLATILE (f
, overload_idx
));
4294 printfi_filtered (spaces
+ 8, "is_private %d\n",
4295 TYPE_FN_FIELD_PRIVATE (f
, overload_idx
));
4296 printfi_filtered (spaces
+ 8, "is_protected %d\n",
4297 TYPE_FN_FIELD_PROTECTED (f
, overload_idx
));
4298 printfi_filtered (spaces
+ 8, "is_stub %d\n",
4299 TYPE_FN_FIELD_STUB (f
, overload_idx
));
4300 printfi_filtered (spaces
+ 8, "voffset %u\n",
4301 TYPE_FN_FIELD_VOFFSET (f
, overload_idx
));
4307 print_cplus_stuff (struct type
*type
, int spaces
)
4309 printfi_filtered (spaces
, "vptr_fieldno %d\n", TYPE_VPTR_FIELDNO (type
));
4310 printfi_filtered (spaces
, "vptr_basetype ");
4311 gdb_print_host_address (TYPE_VPTR_BASETYPE (type
), gdb_stdout
);
4312 puts_filtered ("\n");
4313 if (TYPE_VPTR_BASETYPE (type
) != NULL
)
4314 recursive_dump_type (TYPE_VPTR_BASETYPE (type
), spaces
+ 2);
4316 printfi_filtered (spaces
, "n_baseclasses %d\n",
4317 TYPE_N_BASECLASSES (type
));
4318 printfi_filtered (spaces
, "nfn_fields %d\n",
4319 TYPE_NFN_FIELDS (type
));
4320 if (TYPE_N_BASECLASSES (type
) > 0)
4322 printfi_filtered (spaces
, "virtual_field_bits (%d bits at *",
4323 TYPE_N_BASECLASSES (type
));
4324 gdb_print_host_address (TYPE_FIELD_VIRTUAL_BITS (type
),
4326 printf_filtered (")");
4328 print_bit_vector (TYPE_FIELD_VIRTUAL_BITS (type
),
4329 TYPE_N_BASECLASSES (type
));
4330 puts_filtered ("\n");
4332 if (TYPE_NFIELDS (type
) > 0)
4334 if (TYPE_FIELD_PRIVATE_BITS (type
) != NULL
)
4336 printfi_filtered (spaces
,
4337 "private_field_bits (%d bits at *",
4338 TYPE_NFIELDS (type
));
4339 gdb_print_host_address (TYPE_FIELD_PRIVATE_BITS (type
),
4341 printf_filtered (")");
4342 print_bit_vector (TYPE_FIELD_PRIVATE_BITS (type
),
4343 TYPE_NFIELDS (type
));
4344 puts_filtered ("\n");
4346 if (TYPE_FIELD_PROTECTED_BITS (type
) != NULL
)
4348 printfi_filtered (spaces
,
4349 "protected_field_bits (%d bits at *",
4350 TYPE_NFIELDS (type
));
4351 gdb_print_host_address (TYPE_FIELD_PROTECTED_BITS (type
),
4353 printf_filtered (")");
4354 print_bit_vector (TYPE_FIELD_PROTECTED_BITS (type
),
4355 TYPE_NFIELDS (type
));
4356 puts_filtered ("\n");
4359 if (TYPE_NFN_FIELDS (type
) > 0)
4361 dump_fn_fieldlists (type
, spaces
);
4365 /* Print the contents of the TYPE's type_specific union, assuming that
4366 its type-specific kind is TYPE_SPECIFIC_GNAT_STUFF. */
4369 print_gnat_stuff (struct type
*type
, int spaces
)
4371 struct type
*descriptive_type
= TYPE_DESCRIPTIVE_TYPE (type
);
4373 if (descriptive_type
== NULL
)
4374 printfi_filtered (spaces
+ 2, "no descriptive type\n");
4377 printfi_filtered (spaces
+ 2, "descriptive type\n");
4378 recursive_dump_type (descriptive_type
, spaces
+ 4);
4382 static struct obstack dont_print_type_obstack
;
4385 recursive_dump_type (struct type
*type
, int spaces
)
4390 obstack_begin (&dont_print_type_obstack
, 0);
4392 if (TYPE_NFIELDS (type
) > 0
4393 || (HAVE_CPLUS_STRUCT (type
) && TYPE_NFN_FIELDS (type
) > 0))
4395 struct type
**first_dont_print
4396 = (struct type
**) obstack_base (&dont_print_type_obstack
);
4398 int i
= (struct type
**)
4399 obstack_next_free (&dont_print_type_obstack
) - first_dont_print
;
4403 if (type
== first_dont_print
[i
])
4405 printfi_filtered (spaces
, "type node ");
4406 gdb_print_host_address (type
, gdb_stdout
);
4407 printf_filtered (_(" <same as already seen type>\n"));
4412 obstack_ptr_grow (&dont_print_type_obstack
, type
);
4415 printfi_filtered (spaces
, "type node ");
4416 gdb_print_host_address (type
, gdb_stdout
);
4417 printf_filtered ("\n");
4418 printfi_filtered (spaces
, "name '%s' (",
4419 TYPE_NAME (type
) ? TYPE_NAME (type
) : "<NULL>");
4420 gdb_print_host_address (TYPE_NAME (type
), gdb_stdout
);
4421 printf_filtered (")\n");
4422 printfi_filtered (spaces
, "tagname '%s' (",
4423 TYPE_TAG_NAME (type
) ? TYPE_TAG_NAME (type
) : "<NULL>");
4424 gdb_print_host_address (TYPE_TAG_NAME (type
), gdb_stdout
);
4425 printf_filtered (")\n");
4426 printfi_filtered (spaces
, "code 0x%x ", TYPE_CODE (type
));
4427 switch (TYPE_CODE (type
))
4429 case TYPE_CODE_UNDEF
:
4430 printf_filtered ("(TYPE_CODE_UNDEF)");
4433 printf_filtered ("(TYPE_CODE_PTR)");
4435 case TYPE_CODE_ARRAY
:
4436 printf_filtered ("(TYPE_CODE_ARRAY)");
4438 case TYPE_CODE_STRUCT
:
4439 printf_filtered ("(TYPE_CODE_STRUCT)");
4441 case TYPE_CODE_UNION
:
4442 printf_filtered ("(TYPE_CODE_UNION)");
4444 case TYPE_CODE_ENUM
:
4445 printf_filtered ("(TYPE_CODE_ENUM)");
4447 case TYPE_CODE_FLAGS
:
4448 printf_filtered ("(TYPE_CODE_FLAGS)");
4450 case TYPE_CODE_FUNC
:
4451 printf_filtered ("(TYPE_CODE_FUNC)");
4454 printf_filtered ("(TYPE_CODE_INT)");
4457 printf_filtered ("(TYPE_CODE_FLT)");
4459 case TYPE_CODE_VOID
:
4460 printf_filtered ("(TYPE_CODE_VOID)");
4463 printf_filtered ("(TYPE_CODE_SET)");
4465 case TYPE_CODE_RANGE
:
4466 printf_filtered ("(TYPE_CODE_RANGE)");
4468 case TYPE_CODE_STRING
:
4469 printf_filtered ("(TYPE_CODE_STRING)");
4471 case TYPE_CODE_ERROR
:
4472 printf_filtered ("(TYPE_CODE_ERROR)");
4474 case TYPE_CODE_MEMBERPTR
:
4475 printf_filtered ("(TYPE_CODE_MEMBERPTR)");
4477 case TYPE_CODE_METHODPTR
:
4478 printf_filtered ("(TYPE_CODE_METHODPTR)");
4480 case TYPE_CODE_METHOD
:
4481 printf_filtered ("(TYPE_CODE_METHOD)");
4484 printf_filtered ("(TYPE_CODE_REF)");
4486 case TYPE_CODE_CHAR
:
4487 printf_filtered ("(TYPE_CODE_CHAR)");
4489 case TYPE_CODE_BOOL
:
4490 printf_filtered ("(TYPE_CODE_BOOL)");
4492 case TYPE_CODE_COMPLEX
:
4493 printf_filtered ("(TYPE_CODE_COMPLEX)");
4495 case TYPE_CODE_TYPEDEF
:
4496 printf_filtered ("(TYPE_CODE_TYPEDEF)");
4498 case TYPE_CODE_NAMESPACE
:
4499 printf_filtered ("(TYPE_CODE_NAMESPACE)");
4502 printf_filtered ("(UNKNOWN TYPE CODE)");
4505 puts_filtered ("\n");
4506 printfi_filtered (spaces
, "length %d\n", TYPE_LENGTH (type
));
4507 if (TYPE_OBJFILE_OWNED (type
))
4509 printfi_filtered (spaces
, "objfile ");
4510 gdb_print_host_address (TYPE_OWNER (type
).objfile
, gdb_stdout
);
4514 printfi_filtered (spaces
, "gdbarch ");
4515 gdb_print_host_address (TYPE_OWNER (type
).gdbarch
, gdb_stdout
);
4517 printf_filtered ("\n");
4518 printfi_filtered (spaces
, "target_type ");
4519 gdb_print_host_address (TYPE_TARGET_TYPE (type
), gdb_stdout
);
4520 printf_filtered ("\n");
4521 if (TYPE_TARGET_TYPE (type
) != NULL
)
4523 recursive_dump_type (TYPE_TARGET_TYPE (type
), spaces
+ 2);
4525 printfi_filtered (spaces
, "pointer_type ");
4526 gdb_print_host_address (TYPE_POINTER_TYPE (type
), gdb_stdout
);
4527 printf_filtered ("\n");
4528 printfi_filtered (spaces
, "reference_type ");
4529 gdb_print_host_address (TYPE_REFERENCE_TYPE (type
), gdb_stdout
);
4530 printf_filtered ("\n");
4531 printfi_filtered (spaces
, "type_chain ");
4532 gdb_print_host_address (TYPE_CHAIN (type
), gdb_stdout
);
4533 printf_filtered ("\n");
4534 printfi_filtered (spaces
, "instance_flags 0x%x",
4535 TYPE_INSTANCE_FLAGS (type
));
4536 if (TYPE_CONST (type
))
4538 puts_filtered (" TYPE_CONST");
4540 if (TYPE_VOLATILE (type
))
4542 puts_filtered (" TYPE_VOLATILE");
4544 if (TYPE_CODE_SPACE (type
))
4546 puts_filtered (" TYPE_CODE_SPACE");
4548 if (TYPE_DATA_SPACE (type
))
4550 puts_filtered (" TYPE_DATA_SPACE");
4552 if (TYPE_ADDRESS_CLASS_1 (type
))
4554 puts_filtered (" TYPE_ADDRESS_CLASS_1");
4556 if (TYPE_ADDRESS_CLASS_2 (type
))
4558 puts_filtered (" TYPE_ADDRESS_CLASS_2");
4560 if (TYPE_RESTRICT (type
))
4562 puts_filtered (" TYPE_RESTRICT");
4564 if (TYPE_ATOMIC (type
))
4566 puts_filtered (" TYPE_ATOMIC");
4568 puts_filtered ("\n");
4570 printfi_filtered (spaces
, "flags");
4571 if (TYPE_UNSIGNED (type
))
4573 puts_filtered (" TYPE_UNSIGNED");
4575 if (TYPE_NOSIGN (type
))
4577 puts_filtered (" TYPE_NOSIGN");
4579 if (TYPE_STUB (type
))
4581 puts_filtered (" TYPE_STUB");
4583 if (TYPE_TARGET_STUB (type
))
4585 puts_filtered (" TYPE_TARGET_STUB");
4587 if (TYPE_PROTOTYPED (type
))
4589 puts_filtered (" TYPE_PROTOTYPED");
4591 if (TYPE_INCOMPLETE (type
))
4593 puts_filtered (" TYPE_INCOMPLETE");
4595 if (TYPE_VARARGS (type
))
4597 puts_filtered (" TYPE_VARARGS");
4599 /* This is used for things like AltiVec registers on ppc. Gcc emits
4600 an attribute for the array type, which tells whether or not we
4601 have a vector, instead of a regular array. */
4602 if (TYPE_VECTOR (type
))
4604 puts_filtered (" TYPE_VECTOR");
4606 if (TYPE_FIXED_INSTANCE (type
))
4608 puts_filtered (" TYPE_FIXED_INSTANCE");
4610 if (TYPE_STUB_SUPPORTED (type
))
4612 puts_filtered (" TYPE_STUB_SUPPORTED");
4614 if (TYPE_NOTTEXT (type
))
4616 puts_filtered (" TYPE_NOTTEXT");
4618 puts_filtered ("\n");
4619 printfi_filtered (spaces
, "nfields %d ", TYPE_NFIELDS (type
));
4620 gdb_print_host_address (TYPE_FIELDS (type
), gdb_stdout
);
4621 puts_filtered ("\n");
4622 for (idx
= 0; idx
< TYPE_NFIELDS (type
); idx
++)
4624 if (TYPE_CODE (type
) == TYPE_CODE_ENUM
)
4625 printfi_filtered (spaces
+ 2,
4626 "[%d] enumval %s type ",
4627 idx
, plongest (TYPE_FIELD_ENUMVAL (type
, idx
)));
4629 printfi_filtered (spaces
+ 2,
4630 "[%d] bitpos %s bitsize %d type ",
4631 idx
, plongest (TYPE_FIELD_BITPOS (type
, idx
)),
4632 TYPE_FIELD_BITSIZE (type
, idx
));
4633 gdb_print_host_address (TYPE_FIELD_TYPE (type
, idx
), gdb_stdout
);
4634 printf_filtered (" name '%s' (",
4635 TYPE_FIELD_NAME (type
, idx
) != NULL
4636 ? TYPE_FIELD_NAME (type
, idx
)
4638 gdb_print_host_address (TYPE_FIELD_NAME (type
, idx
), gdb_stdout
);
4639 printf_filtered (")\n");
4640 if (TYPE_FIELD_TYPE (type
, idx
) != NULL
)
4642 recursive_dump_type (TYPE_FIELD_TYPE (type
, idx
), spaces
+ 4);
4645 if (TYPE_CODE (type
) == TYPE_CODE_RANGE
)
4647 printfi_filtered (spaces
, "low %s%s high %s%s\n",
4648 plongest (TYPE_LOW_BOUND (type
)),
4649 TYPE_LOW_BOUND_UNDEFINED (type
) ? " (undefined)" : "",
4650 plongest (TYPE_HIGH_BOUND (type
)),
4651 TYPE_HIGH_BOUND_UNDEFINED (type
)
4652 ? " (undefined)" : "");
4655 switch (TYPE_SPECIFIC_FIELD (type
))
4657 case TYPE_SPECIFIC_CPLUS_STUFF
:
4658 printfi_filtered (spaces
, "cplus_stuff ");
4659 gdb_print_host_address (TYPE_CPLUS_SPECIFIC (type
),
4661 puts_filtered ("\n");
4662 print_cplus_stuff (type
, spaces
);
4665 case TYPE_SPECIFIC_GNAT_STUFF
:
4666 printfi_filtered (spaces
, "gnat_stuff ");
4667 gdb_print_host_address (TYPE_GNAT_SPECIFIC (type
), gdb_stdout
);
4668 puts_filtered ("\n");
4669 print_gnat_stuff (type
, spaces
);
4672 case TYPE_SPECIFIC_FLOATFORMAT
:
4673 printfi_filtered (spaces
, "floatformat ");
4674 if (TYPE_FLOATFORMAT (type
) == NULL
4675 || TYPE_FLOATFORMAT (type
)->name
== NULL
)
4676 puts_filtered ("(null)");
4678 puts_filtered (TYPE_FLOATFORMAT (type
)->name
);
4679 puts_filtered ("\n");
4682 case TYPE_SPECIFIC_FUNC
:
4683 printfi_filtered (spaces
, "calling_convention %d\n",
4684 TYPE_CALLING_CONVENTION (type
));
4685 /* tail_call_list is not printed. */
4688 case TYPE_SPECIFIC_SELF_TYPE
:
4689 printfi_filtered (spaces
, "self_type ");
4690 gdb_print_host_address (TYPE_SELF_TYPE (type
), gdb_stdout
);
4691 puts_filtered ("\n");
4696 obstack_free (&dont_print_type_obstack
, NULL
);
4699 /* Trivial helpers for the libiberty hash table, for mapping one
4702 struct type_pair
: public allocate_on_obstack
4704 type_pair (struct type
*old_
, struct type
*newobj_
)
4705 : old (old_
), newobj (newobj_
)
4708 struct type
* const old
, * const newobj
;
4712 type_pair_hash (const void *item
)
4714 const struct type_pair
*pair
= (const struct type_pair
*) item
;
4716 return htab_hash_pointer (pair
->old
);
4720 type_pair_eq (const void *item_lhs
, const void *item_rhs
)
4722 const struct type_pair
*lhs
= (const struct type_pair
*) item_lhs
;
4723 const struct type_pair
*rhs
= (const struct type_pair
*) item_rhs
;
4725 return lhs
->old
== rhs
->old
;
4728 /* Allocate the hash table used by copy_type_recursive to walk
4729 types without duplicates. We use OBJFILE's obstack, because
4730 OBJFILE is about to be deleted. */
4733 create_copied_types_hash (struct objfile
*objfile
)
4735 return htab_create_alloc_ex (1, type_pair_hash
, type_pair_eq
,
4736 NULL
, &objfile
->objfile_obstack
,
4737 hashtab_obstack_allocate
,
4738 dummy_obstack_deallocate
);
4741 /* Recursively copy (deep copy) a dynamic attribute list of a type. */
4743 static struct dynamic_prop_list
*
4744 copy_dynamic_prop_list (struct obstack
*objfile_obstack
,
4745 struct dynamic_prop_list
*list
)
4747 struct dynamic_prop_list
*copy
= list
;
4748 struct dynamic_prop_list
**node_ptr
= ©
;
4750 while (*node_ptr
!= NULL
)
4752 struct dynamic_prop_list
*node_copy
;
4754 node_copy
= ((struct dynamic_prop_list
*)
4755 obstack_copy (objfile_obstack
, *node_ptr
,
4756 sizeof (struct dynamic_prop_list
)));
4757 node_copy
->prop
= (*node_ptr
)->prop
;
4758 *node_ptr
= node_copy
;
4760 node_ptr
= &node_copy
->next
;
4766 /* Recursively copy (deep copy) TYPE, if it is associated with
4767 OBJFILE. Return a new type owned by the gdbarch associated with the type, a
4768 saved type if we have already visited TYPE (using COPIED_TYPES), or TYPE if
4769 it is not associated with OBJFILE. */
4772 copy_type_recursive (struct objfile
*objfile
,
4774 htab_t copied_types
)
4777 struct type
*new_type
;
4779 if (! TYPE_OBJFILE_OWNED (type
))
4782 /* This type shouldn't be pointing to any types in other objfiles;
4783 if it did, the type might disappear unexpectedly. */
4784 gdb_assert (TYPE_OBJFILE (type
) == objfile
);
4786 struct type_pair
pair (type
, nullptr);
4788 slot
= htab_find_slot (copied_types
, &pair
, INSERT
);
4790 return ((struct type_pair
*) *slot
)->newobj
;
4792 new_type
= alloc_type_arch (get_type_arch (type
));
4794 /* We must add the new type to the hash table immediately, in case
4795 we encounter this type again during a recursive call below. */
4796 struct type_pair
*stored
4797 = new (&objfile
->objfile_obstack
) struct type_pair (type
, new_type
);
4801 /* Copy the common fields of types. For the main type, we simply
4802 copy the entire thing and then update specific fields as needed. */
4803 *TYPE_MAIN_TYPE (new_type
) = *TYPE_MAIN_TYPE (type
);
4804 TYPE_OBJFILE_OWNED (new_type
) = 0;
4805 TYPE_OWNER (new_type
).gdbarch
= get_type_arch (type
);
4807 if (TYPE_NAME (type
))
4808 TYPE_NAME (new_type
) = xstrdup (TYPE_NAME (type
));
4809 if (TYPE_TAG_NAME (type
))
4810 TYPE_TAG_NAME (new_type
) = xstrdup (TYPE_TAG_NAME (type
));
4812 TYPE_INSTANCE_FLAGS (new_type
) = TYPE_INSTANCE_FLAGS (type
);
4813 TYPE_LENGTH (new_type
) = TYPE_LENGTH (type
);
4815 /* Copy the fields. */
4816 if (TYPE_NFIELDS (type
))
4820 nfields
= TYPE_NFIELDS (type
);
4821 TYPE_FIELDS (new_type
) = XCNEWVEC (struct field
, nfields
);
4822 for (i
= 0; i
< nfields
; i
++)
4824 TYPE_FIELD_ARTIFICIAL (new_type
, i
) =
4825 TYPE_FIELD_ARTIFICIAL (type
, i
);
4826 TYPE_FIELD_BITSIZE (new_type
, i
) = TYPE_FIELD_BITSIZE (type
, i
);
4827 if (TYPE_FIELD_TYPE (type
, i
))
4828 TYPE_FIELD_TYPE (new_type
, i
)
4829 = copy_type_recursive (objfile
, TYPE_FIELD_TYPE (type
, i
),
4831 if (TYPE_FIELD_NAME (type
, i
))
4832 TYPE_FIELD_NAME (new_type
, i
) =
4833 xstrdup (TYPE_FIELD_NAME (type
, i
));
4834 switch (TYPE_FIELD_LOC_KIND (type
, i
))
4836 case FIELD_LOC_KIND_BITPOS
:
4837 SET_FIELD_BITPOS (TYPE_FIELD (new_type
, i
),
4838 TYPE_FIELD_BITPOS (type
, i
));
4840 case FIELD_LOC_KIND_ENUMVAL
:
4841 SET_FIELD_ENUMVAL (TYPE_FIELD (new_type
, i
),
4842 TYPE_FIELD_ENUMVAL (type
, i
));
4844 case FIELD_LOC_KIND_PHYSADDR
:
4845 SET_FIELD_PHYSADDR (TYPE_FIELD (new_type
, i
),
4846 TYPE_FIELD_STATIC_PHYSADDR (type
, i
));
4848 case FIELD_LOC_KIND_PHYSNAME
:
4849 SET_FIELD_PHYSNAME (TYPE_FIELD (new_type
, i
),
4850 xstrdup (TYPE_FIELD_STATIC_PHYSNAME (type
,
4854 internal_error (__FILE__
, __LINE__
,
4855 _("Unexpected type field location kind: %d"),
4856 TYPE_FIELD_LOC_KIND (type
, i
));
4861 /* For range types, copy the bounds information. */
4862 if (TYPE_CODE (type
) == TYPE_CODE_RANGE
)
4864 TYPE_RANGE_DATA (new_type
) = XNEW (struct range_bounds
);
4865 *TYPE_RANGE_DATA (new_type
) = *TYPE_RANGE_DATA (type
);
4868 if (TYPE_DYN_PROP_LIST (type
) != NULL
)
4869 TYPE_DYN_PROP_LIST (new_type
)
4870 = copy_dynamic_prop_list (&objfile
->objfile_obstack
,
4871 TYPE_DYN_PROP_LIST (type
));
4874 /* Copy pointers to other types. */
4875 if (TYPE_TARGET_TYPE (type
))
4876 TYPE_TARGET_TYPE (new_type
) =
4877 copy_type_recursive (objfile
,
4878 TYPE_TARGET_TYPE (type
),
4881 /* Maybe copy the type_specific bits.
4883 NOTE drow/2005-12-09: We do not copy the C++-specific bits like
4884 base classes and methods. There's no fundamental reason why we
4885 can't, but at the moment it is not needed. */
4887 switch (TYPE_SPECIFIC_FIELD (type
))
4889 case TYPE_SPECIFIC_NONE
:
4891 case TYPE_SPECIFIC_FUNC
:
4892 INIT_FUNC_SPECIFIC (new_type
);
4893 TYPE_CALLING_CONVENTION (new_type
) = TYPE_CALLING_CONVENTION (type
);
4894 TYPE_NO_RETURN (new_type
) = TYPE_NO_RETURN (type
);
4895 TYPE_TAIL_CALL_LIST (new_type
) = NULL
;
4897 case TYPE_SPECIFIC_FLOATFORMAT
:
4898 TYPE_FLOATFORMAT (new_type
) = TYPE_FLOATFORMAT (type
);
4900 case TYPE_SPECIFIC_CPLUS_STUFF
:
4901 INIT_CPLUS_SPECIFIC (new_type
);
4903 case TYPE_SPECIFIC_GNAT_STUFF
:
4904 INIT_GNAT_SPECIFIC (new_type
);
4906 case TYPE_SPECIFIC_SELF_TYPE
:
4907 set_type_self_type (new_type
,
4908 copy_type_recursive (objfile
, TYPE_SELF_TYPE (type
),
4912 gdb_assert_not_reached ("bad type_specific_kind");
4918 /* Make a copy of the given TYPE, except that the pointer & reference
4919 types are not preserved.
4921 This function assumes that the given type has an associated objfile.
4922 This objfile is used to allocate the new type. */
4925 copy_type (const struct type
*type
)
4927 struct type
*new_type
;
4929 gdb_assert (TYPE_OBJFILE_OWNED (type
));
4931 new_type
= alloc_type_copy (type
);
4932 TYPE_INSTANCE_FLAGS (new_type
) = TYPE_INSTANCE_FLAGS (type
);
4933 TYPE_LENGTH (new_type
) = TYPE_LENGTH (type
);
4934 memcpy (TYPE_MAIN_TYPE (new_type
), TYPE_MAIN_TYPE (type
),
4935 sizeof (struct main_type
));
4936 if (TYPE_DYN_PROP_LIST (type
) != NULL
)
4937 TYPE_DYN_PROP_LIST (new_type
)
4938 = copy_dynamic_prop_list (&TYPE_OBJFILE (type
) -> objfile_obstack
,
4939 TYPE_DYN_PROP_LIST (type
));
4944 /* Helper functions to initialize architecture-specific types. */
4946 /* Allocate a type structure associated with GDBARCH and set its
4947 CODE, LENGTH, and NAME fields. */
4950 arch_type (struct gdbarch
*gdbarch
,
4951 enum type_code code
, int bit
, const char *name
)
4955 type
= alloc_type_arch (gdbarch
);
4956 set_type_code (type
, code
);
4957 gdb_assert ((bit
% TARGET_CHAR_BIT
) == 0);
4958 TYPE_LENGTH (type
) = bit
/ TARGET_CHAR_BIT
;
4961 TYPE_NAME (type
) = gdbarch_obstack_strdup (gdbarch
, name
);
4966 /* Allocate a TYPE_CODE_INT type structure associated with GDBARCH.
4967 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
4968 the type's TYPE_UNSIGNED flag. NAME is the type name. */
4971 arch_integer_type (struct gdbarch
*gdbarch
,
4972 int bit
, int unsigned_p
, const char *name
)
4976 t
= arch_type (gdbarch
, TYPE_CODE_INT
, bit
, name
);
4978 TYPE_UNSIGNED (t
) = 1;
4983 /* Allocate a TYPE_CODE_CHAR type structure associated with GDBARCH.
4984 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
4985 the type's TYPE_UNSIGNED flag. NAME is the type name. */
4988 arch_character_type (struct gdbarch
*gdbarch
,
4989 int bit
, int unsigned_p
, const char *name
)
4993 t
= arch_type (gdbarch
, TYPE_CODE_CHAR
, bit
, name
);
4995 TYPE_UNSIGNED (t
) = 1;
5000 /* Allocate a TYPE_CODE_BOOL type structure associated with GDBARCH.
5001 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
5002 the type's TYPE_UNSIGNED flag. NAME is the type name. */
5005 arch_boolean_type (struct gdbarch
*gdbarch
,
5006 int bit
, int unsigned_p
, const char *name
)
5010 t
= arch_type (gdbarch
, TYPE_CODE_BOOL
, bit
, name
);
5012 TYPE_UNSIGNED (t
) = 1;
5017 /* Allocate a TYPE_CODE_FLT type structure associated with GDBARCH.
5018 BIT is the type size in bits; if BIT equals -1, the size is
5019 determined by the floatformat. NAME is the type name. Set the
5020 TYPE_FLOATFORMAT from FLOATFORMATS. */
5023 arch_float_type (struct gdbarch
*gdbarch
,
5024 int bit
, const char *name
,
5025 const struct floatformat
**floatformats
)
5027 const struct floatformat
*fmt
= floatformats
[gdbarch_byte_order (gdbarch
)];
5030 bit
= verify_floatformat (bit
, fmt
);
5031 t
= arch_type (gdbarch
, TYPE_CODE_FLT
, bit
, name
);
5032 TYPE_FLOATFORMAT (t
) = fmt
;
5037 /* Allocate a TYPE_CODE_DECFLOAT type structure associated with GDBARCH.
5038 BIT is the type size in bits. NAME is the type name. */
5041 arch_decfloat_type (struct gdbarch
*gdbarch
, int bit
, const char *name
)
5045 t
= arch_type (gdbarch
, TYPE_CODE_DECFLOAT
, bit
, name
);
5049 /* Allocate a TYPE_CODE_COMPLEX type structure associated with GDBARCH.
5050 NAME is the type name. TARGET_TYPE is the component float type. */
5053 arch_complex_type (struct gdbarch
*gdbarch
,
5054 const char *name
, struct type
*target_type
)
5058 t
= arch_type (gdbarch
, TYPE_CODE_COMPLEX
,
5059 2 * TYPE_LENGTH (target_type
) * TARGET_CHAR_BIT
, name
);
5060 TYPE_TARGET_TYPE (t
) = target_type
;
5064 /* Allocate a TYPE_CODE_PTR type structure associated with GDBARCH.
5065 BIT is the pointer type size in bits. NAME is the type name.
5066 TARGET_TYPE is the pointer target type. Always sets the pointer type's
5067 TYPE_UNSIGNED flag. */
5070 arch_pointer_type (struct gdbarch
*gdbarch
,
5071 int bit
, const char *name
, struct type
*target_type
)
5075 t
= arch_type (gdbarch
, TYPE_CODE_PTR
, bit
, name
);
5076 TYPE_TARGET_TYPE (t
) = target_type
;
5077 TYPE_UNSIGNED (t
) = 1;
5081 /* Allocate a TYPE_CODE_FLAGS type structure associated with GDBARCH.
5082 NAME is the type name. BIT is the size of the flag word in bits. */
5085 arch_flags_type (struct gdbarch
*gdbarch
, const char *name
, int bit
)
5089 type
= arch_type (gdbarch
, TYPE_CODE_FLAGS
, bit
, name
);
5090 TYPE_UNSIGNED (type
) = 1;
5091 TYPE_NFIELDS (type
) = 0;
5092 /* Pre-allocate enough space assuming every field is one bit. */
5094 = (struct field
*) TYPE_ZALLOC (type
, bit
* sizeof (struct field
));
5099 /* Add field to TYPE_CODE_FLAGS type TYPE to indicate the bit at
5100 position BITPOS is called NAME. Pass NAME as "" for fields that
5101 should not be printed. */
5104 append_flags_type_field (struct type
*type
, int start_bitpos
, int nr_bits
,
5105 struct type
*field_type
, const char *name
)
5107 int type_bitsize
= TYPE_LENGTH (type
) * TARGET_CHAR_BIT
;
5108 int field_nr
= TYPE_NFIELDS (type
);
5110 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_FLAGS
);
5111 gdb_assert (TYPE_NFIELDS (type
) + 1 <= type_bitsize
);
5112 gdb_assert (start_bitpos
>= 0 && start_bitpos
< type_bitsize
);
5113 gdb_assert (nr_bits
>= 1 && nr_bits
<= type_bitsize
);
5114 gdb_assert (name
!= NULL
);
5116 TYPE_FIELD_NAME (type
, field_nr
) = xstrdup (name
);
5117 TYPE_FIELD_TYPE (type
, field_nr
) = field_type
;
5118 SET_FIELD_BITPOS (TYPE_FIELD (type
, field_nr
), start_bitpos
);
5119 TYPE_FIELD_BITSIZE (type
, field_nr
) = nr_bits
;
5120 ++TYPE_NFIELDS (type
);
5123 /* Special version of append_flags_type_field to add a flag field.
5124 Add field to TYPE_CODE_FLAGS type TYPE to indicate the bit at
5125 position BITPOS is called NAME. */
5128 append_flags_type_flag (struct type
*type
, int bitpos
, const char *name
)
5130 struct gdbarch
*gdbarch
= get_type_arch (type
);
5132 append_flags_type_field (type
, bitpos
, 1,
5133 builtin_type (gdbarch
)->builtin_bool
,
5137 /* Allocate a TYPE_CODE_STRUCT or TYPE_CODE_UNION type structure (as
5138 specified by CODE) associated with GDBARCH. NAME is the type name. */
5141 arch_composite_type (struct gdbarch
*gdbarch
, const char *name
,
5142 enum type_code code
)
5146 gdb_assert (code
== TYPE_CODE_STRUCT
|| code
== TYPE_CODE_UNION
);
5147 t
= arch_type (gdbarch
, code
, 0, NULL
);
5148 TYPE_TAG_NAME (t
) = name
;
5149 INIT_CPLUS_SPECIFIC (t
);
5153 /* Add new field with name NAME and type FIELD to composite type T.
5154 Do not set the field's position or adjust the type's length;
5155 the caller should do so. Return the new field. */
5158 append_composite_type_field_raw (struct type
*t
, const char *name
,
5163 TYPE_NFIELDS (t
) = TYPE_NFIELDS (t
) + 1;
5164 TYPE_FIELDS (t
) = XRESIZEVEC (struct field
, TYPE_FIELDS (t
),
5166 f
= &(TYPE_FIELDS (t
)[TYPE_NFIELDS (t
) - 1]);
5167 memset (f
, 0, sizeof f
[0]);
5168 FIELD_TYPE (f
[0]) = field
;
5169 FIELD_NAME (f
[0]) = name
;
5173 /* Add new field with name NAME and type FIELD to composite type T.
5174 ALIGNMENT (if non-zero) specifies the minimum field alignment. */
5177 append_composite_type_field_aligned (struct type
*t
, const char *name
,
5178 struct type
*field
, int alignment
)
5180 struct field
*f
= append_composite_type_field_raw (t
, name
, field
);
5182 if (TYPE_CODE (t
) == TYPE_CODE_UNION
)
5184 if (TYPE_LENGTH (t
) < TYPE_LENGTH (field
))
5185 TYPE_LENGTH (t
) = TYPE_LENGTH (field
);
5187 else if (TYPE_CODE (t
) == TYPE_CODE_STRUCT
)
5189 TYPE_LENGTH (t
) = TYPE_LENGTH (t
) + TYPE_LENGTH (field
);
5190 if (TYPE_NFIELDS (t
) > 1)
5192 SET_FIELD_BITPOS (f
[0],
5193 (FIELD_BITPOS (f
[-1])
5194 + (TYPE_LENGTH (FIELD_TYPE (f
[-1]))
5195 * TARGET_CHAR_BIT
)));
5201 alignment
*= TARGET_CHAR_BIT
;
5202 left
= FIELD_BITPOS (f
[0]) % alignment
;
5206 SET_FIELD_BITPOS (f
[0], FIELD_BITPOS (f
[0]) + (alignment
- left
));
5207 TYPE_LENGTH (t
) += (alignment
- left
) / TARGET_CHAR_BIT
;
5214 /* Add new field with name NAME and type FIELD to composite type T. */
5217 append_composite_type_field (struct type
*t
, const char *name
,
5220 append_composite_type_field_aligned (t
, name
, field
, 0);
5223 static struct gdbarch_data
*gdbtypes_data
;
5225 const struct builtin_type
*
5226 builtin_type (struct gdbarch
*gdbarch
)
5228 return (const struct builtin_type
*) gdbarch_data (gdbarch
, gdbtypes_data
);
5232 gdbtypes_post_init (struct gdbarch
*gdbarch
)
5234 struct builtin_type
*builtin_type
5235 = GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct builtin_type
);
5238 builtin_type
->builtin_void
5239 = arch_type (gdbarch
, TYPE_CODE_VOID
, TARGET_CHAR_BIT
, "void");
5240 builtin_type
->builtin_char
5241 = arch_integer_type (gdbarch
, TARGET_CHAR_BIT
,
5242 !gdbarch_char_signed (gdbarch
), "char");
5243 TYPE_NOSIGN (builtin_type
->builtin_char
) = 1;
5244 builtin_type
->builtin_signed_char
5245 = arch_integer_type (gdbarch
, TARGET_CHAR_BIT
,
5247 builtin_type
->builtin_unsigned_char
5248 = arch_integer_type (gdbarch
, TARGET_CHAR_BIT
,
5249 1, "unsigned char");
5250 builtin_type
->builtin_short
5251 = arch_integer_type (gdbarch
, gdbarch_short_bit (gdbarch
),
5253 builtin_type
->builtin_unsigned_short
5254 = arch_integer_type (gdbarch
, gdbarch_short_bit (gdbarch
),
5255 1, "unsigned short");
5256 builtin_type
->builtin_int
5257 = arch_integer_type (gdbarch
, gdbarch_int_bit (gdbarch
),
5259 builtin_type
->builtin_unsigned_int
5260 = arch_integer_type (gdbarch
, gdbarch_int_bit (gdbarch
),
5262 builtin_type
->builtin_long
5263 = arch_integer_type (gdbarch
, gdbarch_long_bit (gdbarch
),
5265 builtin_type
->builtin_unsigned_long
5266 = arch_integer_type (gdbarch
, gdbarch_long_bit (gdbarch
),
5267 1, "unsigned long");
5268 builtin_type
->builtin_long_long
5269 = arch_integer_type (gdbarch
, gdbarch_long_long_bit (gdbarch
),
5271 builtin_type
->builtin_unsigned_long_long
5272 = arch_integer_type (gdbarch
, gdbarch_long_long_bit (gdbarch
),
5273 1, "unsigned long long");
5274 builtin_type
->builtin_float
5275 = arch_float_type (gdbarch
, gdbarch_float_bit (gdbarch
),
5276 "float", gdbarch_float_format (gdbarch
));
5277 builtin_type
->builtin_double
5278 = arch_float_type (gdbarch
, gdbarch_double_bit (gdbarch
),
5279 "double", gdbarch_double_format (gdbarch
));
5280 builtin_type
->builtin_long_double
5281 = arch_float_type (gdbarch
, gdbarch_long_double_bit (gdbarch
),
5282 "long double", gdbarch_long_double_format (gdbarch
));
5283 builtin_type
->builtin_complex
5284 = arch_complex_type (gdbarch
, "complex",
5285 builtin_type
->builtin_float
);
5286 builtin_type
->builtin_double_complex
5287 = arch_complex_type (gdbarch
, "double complex",
5288 builtin_type
->builtin_double
);
5289 builtin_type
->builtin_string
5290 = arch_type (gdbarch
, TYPE_CODE_STRING
, TARGET_CHAR_BIT
, "string");
5291 builtin_type
->builtin_bool
5292 = arch_type (gdbarch
, TYPE_CODE_BOOL
, TARGET_CHAR_BIT
, "bool");
5294 /* The following three are about decimal floating point types, which
5295 are 32-bits, 64-bits and 128-bits respectively. */
5296 builtin_type
->builtin_decfloat
5297 = arch_decfloat_type (gdbarch
, 32, "_Decimal32");
5298 builtin_type
->builtin_decdouble
5299 = arch_decfloat_type (gdbarch
, 64, "_Decimal64");
5300 builtin_type
->builtin_declong
5301 = arch_decfloat_type (gdbarch
, 128, "_Decimal128");
5303 /* "True" character types. */
5304 builtin_type
->builtin_true_char
5305 = arch_character_type (gdbarch
, TARGET_CHAR_BIT
, 0, "true character");
5306 builtin_type
->builtin_true_unsigned_char
5307 = arch_character_type (gdbarch
, TARGET_CHAR_BIT
, 1, "true character");
5309 /* Fixed-size integer types. */
5310 builtin_type
->builtin_int0
5311 = arch_integer_type (gdbarch
, 0, 0, "int0_t");
5312 builtin_type
->builtin_int8
5313 = arch_integer_type (gdbarch
, 8, 0, "int8_t");
5314 builtin_type
->builtin_uint8
5315 = arch_integer_type (gdbarch
, 8, 1, "uint8_t");
5316 builtin_type
->builtin_int16
5317 = arch_integer_type (gdbarch
, 16, 0, "int16_t");
5318 builtin_type
->builtin_uint16
5319 = arch_integer_type (gdbarch
, 16, 1, "uint16_t");
5320 builtin_type
->builtin_int32
5321 = arch_integer_type (gdbarch
, 32, 0, "int32_t");
5322 builtin_type
->builtin_uint32
5323 = arch_integer_type (gdbarch
, 32, 1, "uint32_t");
5324 builtin_type
->builtin_int64
5325 = arch_integer_type (gdbarch
, 64, 0, "int64_t");
5326 builtin_type
->builtin_uint64
5327 = arch_integer_type (gdbarch
, 64, 1, "uint64_t");
5328 builtin_type
->builtin_int128
5329 = arch_integer_type (gdbarch
, 128, 0, "int128_t");
5330 builtin_type
->builtin_uint128
5331 = arch_integer_type (gdbarch
, 128, 1, "uint128_t");
5332 TYPE_INSTANCE_FLAGS (builtin_type
->builtin_int8
) |=
5333 TYPE_INSTANCE_FLAG_NOTTEXT
;
5334 TYPE_INSTANCE_FLAGS (builtin_type
->builtin_uint8
) |=
5335 TYPE_INSTANCE_FLAG_NOTTEXT
;
5337 /* Wide character types. */
5338 builtin_type
->builtin_char16
5339 = arch_integer_type (gdbarch
, 16, 1, "char16_t");
5340 builtin_type
->builtin_char32
5341 = arch_integer_type (gdbarch
, 32, 1, "char32_t");
5342 builtin_type
->builtin_wchar
5343 = arch_integer_type (gdbarch
, gdbarch_wchar_bit (gdbarch
),
5344 !gdbarch_wchar_signed (gdbarch
), "wchar_t");
5346 /* Default data/code pointer types. */
5347 builtin_type
->builtin_data_ptr
5348 = lookup_pointer_type (builtin_type
->builtin_void
);
5349 builtin_type
->builtin_func_ptr
5350 = lookup_pointer_type (lookup_function_type (builtin_type
->builtin_void
));
5351 builtin_type
->builtin_func_func
5352 = lookup_function_type (builtin_type
->builtin_func_ptr
);
5354 /* This type represents a GDB internal function. */
5355 builtin_type
->internal_fn
5356 = arch_type (gdbarch
, TYPE_CODE_INTERNAL_FUNCTION
, 0,
5357 "<internal function>");
5359 /* This type represents an xmethod. */
5360 builtin_type
->xmethod
5361 = arch_type (gdbarch
, TYPE_CODE_XMETHOD
, 0, "<xmethod>");
5363 return builtin_type
;
5366 /* This set of objfile-based types is intended to be used by symbol
5367 readers as basic types. */
5369 static const struct objfile_data
*objfile_type_data
;
5371 const struct objfile_type
*
5372 objfile_type (struct objfile
*objfile
)
5374 struct gdbarch
*gdbarch
;
5375 struct objfile_type
*objfile_type
5376 = (struct objfile_type
*) objfile_data (objfile
, objfile_type_data
);
5379 return objfile_type
;
5381 objfile_type
= OBSTACK_CALLOC (&objfile
->objfile_obstack
,
5382 1, struct objfile_type
);
5384 /* Use the objfile architecture to determine basic type properties. */
5385 gdbarch
= get_objfile_arch (objfile
);
5388 objfile_type
->builtin_void
5389 = init_type (objfile
, TYPE_CODE_VOID
, TARGET_CHAR_BIT
, "void");
5390 objfile_type
->builtin_char
5391 = init_integer_type (objfile
, TARGET_CHAR_BIT
,
5392 !gdbarch_char_signed (gdbarch
), "char");
5393 TYPE_NOSIGN (objfile_type
->builtin_char
) = 1;
5394 objfile_type
->builtin_signed_char
5395 = init_integer_type (objfile
, TARGET_CHAR_BIT
,
5397 objfile_type
->builtin_unsigned_char
5398 = init_integer_type (objfile
, TARGET_CHAR_BIT
,
5399 1, "unsigned char");
5400 objfile_type
->builtin_short
5401 = init_integer_type (objfile
, gdbarch_short_bit (gdbarch
),
5403 objfile_type
->builtin_unsigned_short
5404 = init_integer_type (objfile
, gdbarch_short_bit (gdbarch
),
5405 1, "unsigned short");
5406 objfile_type
->builtin_int
5407 = init_integer_type (objfile
, gdbarch_int_bit (gdbarch
),
5409 objfile_type
->builtin_unsigned_int
5410 = init_integer_type (objfile
, gdbarch_int_bit (gdbarch
),
5412 objfile_type
->builtin_long
5413 = init_integer_type (objfile
, gdbarch_long_bit (gdbarch
),
5415 objfile_type
->builtin_unsigned_long
5416 = init_integer_type (objfile
, gdbarch_long_bit (gdbarch
),
5417 1, "unsigned long");
5418 objfile_type
->builtin_long_long
5419 = init_integer_type (objfile
, gdbarch_long_long_bit (gdbarch
),
5421 objfile_type
->builtin_unsigned_long_long
5422 = init_integer_type (objfile
, gdbarch_long_long_bit (gdbarch
),
5423 1, "unsigned long long");
5424 objfile_type
->builtin_float
5425 = init_float_type (objfile
, gdbarch_float_bit (gdbarch
),
5426 "float", gdbarch_float_format (gdbarch
));
5427 objfile_type
->builtin_double
5428 = init_float_type (objfile
, gdbarch_double_bit (gdbarch
),
5429 "double", gdbarch_double_format (gdbarch
));
5430 objfile_type
->builtin_long_double
5431 = init_float_type (objfile
, gdbarch_long_double_bit (gdbarch
),
5432 "long double", gdbarch_long_double_format (gdbarch
));
5434 /* This type represents a type that was unrecognized in symbol read-in. */
5435 objfile_type
->builtin_error
5436 = init_type (objfile
, TYPE_CODE_ERROR
, 0, "<unknown type>");
5438 /* The following set of types is used for symbols with no
5439 debug information. */
5440 objfile_type
->nodebug_text_symbol
5441 = init_type (objfile
, TYPE_CODE_FUNC
, TARGET_CHAR_BIT
,
5442 "<text variable, no debug info>");
5443 objfile_type
->nodebug_text_gnu_ifunc_symbol
5444 = init_type (objfile
, TYPE_CODE_FUNC
, TARGET_CHAR_BIT
,
5445 "<text gnu-indirect-function variable, no debug info>");
5446 /* Ifunc resolvers return a function address. */
5447 TYPE_TARGET_TYPE (objfile_type
->nodebug_text_gnu_ifunc_symbol
)
5448 = init_integer_type (objfile
, gdbarch_addr_bit (gdbarch
), 1,
5449 "__IFUNC_RESOLVER_RET");
5450 TYPE_GNU_IFUNC (objfile_type
->nodebug_text_gnu_ifunc_symbol
) = 1;
5451 objfile_type
->nodebug_got_plt_symbol
5452 = init_pointer_type (objfile
, gdbarch_addr_bit (gdbarch
),
5453 "<text from jump slot in .got.plt, no debug info>",
5454 objfile_type
->nodebug_text_symbol
);
5455 objfile_type
->nodebug_data_symbol
5456 = init_nodebug_var_type (objfile
, "<data variable, no debug info>");
5457 objfile_type
->nodebug_unknown_symbol
5458 = init_nodebug_var_type (objfile
, "<variable (not text or data), no debug info>");
5459 objfile_type
->nodebug_tls_symbol
5460 = init_nodebug_var_type (objfile
, "<thread local variable, no debug info>");
5462 /* NOTE: on some targets, addresses and pointers are not necessarily
5466 - gdb's `struct type' always describes the target's
5468 - gdb's `struct value' objects should always hold values in
5470 - gdb's CORE_ADDR values are addresses in the unified virtual
5471 address space that the assembler and linker work with. Thus,
5472 since target_read_memory takes a CORE_ADDR as an argument, it
5473 can access any memory on the target, even if the processor has
5474 separate code and data address spaces.
5476 In this context, objfile_type->builtin_core_addr is a bit odd:
5477 it's a target type for a value the target will never see. It's
5478 only used to hold the values of (typeless) linker symbols, which
5479 are indeed in the unified virtual address space. */
5481 objfile_type
->builtin_core_addr
5482 = init_integer_type (objfile
, gdbarch_addr_bit (gdbarch
), 1,
5485 set_objfile_data (objfile
, objfile_type_data
, objfile_type
);
5486 return objfile_type
;
5490 _initialize_gdbtypes (void)
5492 gdbtypes_data
= gdbarch_data_register_post_init (gdbtypes_post_init
);
5493 objfile_type_data
= register_objfile_data ();
5495 add_setshow_zuinteger_cmd ("overload", no_class
, &overload_debug
,
5496 _("Set debugging of C++ overloading."),
5497 _("Show debugging of C++ overloading."),
5498 _("When enabled, ranking of the "
5499 "functions is displayed."),
5501 show_overload_debug
,
5502 &setdebuglist
, &showdebuglist
);
5504 /* Add user knob for controlling resolution of opaque types. */
5505 add_setshow_boolean_cmd ("opaque-type-resolution", class_support
,
5506 &opaque_type_resolution
,
5507 _("Set resolution of opaque struct/class/union"
5508 " types (if set before loading symbols)."),
5509 _("Show resolution of opaque struct/class/union"
5510 " types (if set before loading symbols)."),
5512 show_opaque_type_resolution
,
5513 &setlist
, &showlist
);
5515 /* Add an option to permit non-strict type checking. */
5516 add_setshow_boolean_cmd ("type", class_support
,
5517 &strict_type_checking
,
5518 _("Set strict type checking."),
5519 _("Show strict type checking."),
5521 show_strict_type_checking
,
5522 &setchecklist
, &showchecklist
);