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;
3016 /* See gdbtypes.h. */
3019 type_raw_align (struct type
*type
)
3021 if (type
->align_log2
!= 0)
3022 return 1 << (type
->align_log2
- 1);
3026 /* See gdbtypes.h. */
3029 type_align (struct type
*type
)
3031 unsigned raw_align
= type_raw_align (type
);
3036 switch (TYPE_CODE (type
))
3039 case TYPE_CODE_FUNC
:
3040 case TYPE_CODE_FLAGS
:
3043 case TYPE_CODE_ENUM
:
3045 case TYPE_CODE_RVALUE_REF
:
3046 case TYPE_CODE_CHAR
:
3047 case TYPE_CODE_BOOL
:
3048 case TYPE_CODE_DECFLOAT
:
3050 struct gdbarch
*arch
= get_type_arch (type
);
3051 align
= gdbarch_type_align (arch
, type
);
3055 case TYPE_CODE_ARRAY
:
3056 case TYPE_CODE_COMPLEX
:
3057 case TYPE_CODE_TYPEDEF
:
3058 align
= type_align (TYPE_TARGET_TYPE (type
));
3061 case TYPE_CODE_STRUCT
:
3062 case TYPE_CODE_UNION
:
3064 if (TYPE_NFIELDS (type
) == 0)
3066 /* An empty struct has alignment 1. */
3070 for (unsigned i
= 0; i
< TYPE_NFIELDS (type
); ++i
)
3072 ULONGEST f_align
= type_align (TYPE_FIELD_TYPE (type
, i
));
3075 /* Don't pretend we know something we don't. */
3079 if (f_align
> align
)
3086 case TYPE_CODE_RANGE
:
3087 case TYPE_CODE_STRING
:
3088 /* Not sure what to do here, and these can't appear in C or C++
3092 case TYPE_CODE_METHODPTR
:
3093 case TYPE_CODE_MEMBERPTR
:
3094 align
= TYPE_LENGTH (type
);
3097 case TYPE_CODE_VOID
:
3101 case TYPE_CODE_ERROR
:
3102 case TYPE_CODE_METHOD
:
3107 if ((align
& (align
- 1)) != 0)
3109 /* Not a power of 2, so pass. */
3116 /* See gdbtypes.h. */
3119 set_type_align (struct type
*type
, ULONGEST align
)
3121 /* Must be a power of 2. Zero is ok. */
3122 gdb_assert ((align
& (align
- 1)) == 0);
3124 unsigned result
= 0;
3131 if (result
>= (1 << TYPE_ALIGN_BITS
))
3134 type
->align_log2
= result
;
3139 /* Queries on types. */
3142 can_dereference (struct type
*t
)
3144 /* FIXME: Should we return true for references as well as
3146 t
= check_typedef (t
);
3149 && TYPE_CODE (t
) == TYPE_CODE_PTR
3150 && TYPE_CODE (TYPE_TARGET_TYPE (t
)) != TYPE_CODE_VOID
);
3154 is_integral_type (struct type
*t
)
3156 t
= check_typedef (t
);
3159 && ((TYPE_CODE (t
) == TYPE_CODE_INT
)
3160 || (TYPE_CODE (t
) == TYPE_CODE_ENUM
)
3161 || (TYPE_CODE (t
) == TYPE_CODE_FLAGS
)
3162 || (TYPE_CODE (t
) == TYPE_CODE_CHAR
)
3163 || (TYPE_CODE (t
) == TYPE_CODE_RANGE
)
3164 || (TYPE_CODE (t
) == TYPE_CODE_BOOL
)));
3168 is_floating_type (struct type
*t
)
3170 t
= check_typedef (t
);
3173 && ((TYPE_CODE (t
) == TYPE_CODE_FLT
)
3174 || (TYPE_CODE (t
) == TYPE_CODE_DECFLOAT
)));
3177 /* Return true if TYPE is scalar. */
3180 is_scalar_type (struct type
*type
)
3182 type
= check_typedef (type
);
3184 switch (TYPE_CODE (type
))
3186 case TYPE_CODE_ARRAY
:
3187 case TYPE_CODE_STRUCT
:
3188 case TYPE_CODE_UNION
:
3190 case TYPE_CODE_STRING
:
3197 /* Return true if T is scalar, or a composite type which in practice has
3198 the memory layout of a scalar type. E.g., an array or struct with only
3199 one scalar element inside it, or a union with only scalar elements. */
3202 is_scalar_type_recursive (struct type
*t
)
3204 t
= check_typedef (t
);
3206 if (is_scalar_type (t
))
3208 /* Are we dealing with an array or string of known dimensions? */
3209 else if ((TYPE_CODE (t
) == TYPE_CODE_ARRAY
3210 || TYPE_CODE (t
) == TYPE_CODE_STRING
) && TYPE_NFIELDS (t
) == 1
3211 && TYPE_CODE (TYPE_INDEX_TYPE (t
)) == TYPE_CODE_RANGE
)
3213 LONGEST low_bound
, high_bound
;
3214 struct type
*elt_type
= check_typedef (TYPE_TARGET_TYPE (t
));
3216 get_discrete_bounds (TYPE_INDEX_TYPE (t
), &low_bound
, &high_bound
);
3218 return high_bound
== low_bound
&& is_scalar_type_recursive (elt_type
);
3220 /* Are we dealing with a struct with one element? */
3221 else if (TYPE_CODE (t
) == TYPE_CODE_STRUCT
&& TYPE_NFIELDS (t
) == 1)
3222 return is_scalar_type_recursive (TYPE_FIELD_TYPE (t
, 0));
3223 else if (TYPE_CODE (t
) == TYPE_CODE_UNION
)
3225 int i
, n
= TYPE_NFIELDS (t
);
3227 /* If all elements of the union are scalar, then the union is scalar. */
3228 for (i
= 0; i
< n
; i
++)
3229 if (!is_scalar_type_recursive (TYPE_FIELD_TYPE (t
, i
)))
3238 /* Return true is T is a class or a union. False otherwise. */
3241 class_or_union_p (const struct type
*t
)
3243 return (TYPE_CODE (t
) == TYPE_CODE_STRUCT
3244 || TYPE_CODE (t
) == TYPE_CODE_UNION
);
3247 /* A helper function which returns true if types A and B represent the
3248 "same" class type. This is true if the types have the same main
3249 type, or the same name. */
3252 class_types_same_p (const struct type
*a
, const struct type
*b
)
3254 return (TYPE_MAIN_TYPE (a
) == TYPE_MAIN_TYPE (b
)
3255 || (TYPE_NAME (a
) && TYPE_NAME (b
)
3256 && !strcmp (TYPE_NAME (a
), TYPE_NAME (b
))));
3259 /* If BASE is an ancestor of DCLASS return the distance between them.
3260 otherwise return -1;
3264 class B: public A {};
3265 class C: public B {};
3268 distance_to_ancestor (A, A, 0) = 0
3269 distance_to_ancestor (A, B, 0) = 1
3270 distance_to_ancestor (A, C, 0) = 2
3271 distance_to_ancestor (A, D, 0) = 3
3273 If PUBLIC is 1 then only public ancestors are considered,
3274 and the function returns the distance only if BASE is a public ancestor
3278 distance_to_ancestor (A, D, 1) = -1. */
3281 distance_to_ancestor (struct type
*base
, struct type
*dclass
, int is_public
)
3286 base
= check_typedef (base
);
3287 dclass
= check_typedef (dclass
);
3289 if (class_types_same_p (base
, dclass
))
3292 for (i
= 0; i
< TYPE_N_BASECLASSES (dclass
); i
++)
3294 if (is_public
&& ! BASETYPE_VIA_PUBLIC (dclass
, i
))
3297 d
= distance_to_ancestor (base
, TYPE_BASECLASS (dclass
, i
), is_public
);
3305 /* Check whether BASE is an ancestor or base class or DCLASS
3306 Return 1 if so, and 0 if not.
3307 Note: If BASE and DCLASS are of the same type, this function
3308 will return 1. So for some class A, is_ancestor (A, A) will
3312 is_ancestor (struct type
*base
, struct type
*dclass
)
3314 return distance_to_ancestor (base
, dclass
, 0) >= 0;
3317 /* Like is_ancestor, but only returns true when BASE is a public
3318 ancestor of DCLASS. */
3321 is_public_ancestor (struct type
*base
, struct type
*dclass
)
3323 return distance_to_ancestor (base
, dclass
, 1) >= 0;
3326 /* A helper function for is_unique_ancestor. */
3329 is_unique_ancestor_worker (struct type
*base
, struct type
*dclass
,
3331 const gdb_byte
*valaddr
, int embedded_offset
,
3332 CORE_ADDR address
, struct value
*val
)
3336 base
= check_typedef (base
);
3337 dclass
= check_typedef (dclass
);
3339 for (i
= 0; i
< TYPE_N_BASECLASSES (dclass
) && count
< 2; ++i
)
3344 iter
= check_typedef (TYPE_BASECLASS (dclass
, i
));
3346 this_offset
= baseclass_offset (dclass
, i
, valaddr
, embedded_offset
,
3349 if (class_types_same_p (base
, iter
))
3351 /* If this is the first subclass, set *OFFSET and set count
3352 to 1. Otherwise, if this is at the same offset as
3353 previous instances, do nothing. Otherwise, increment
3357 *offset
= this_offset
;
3360 else if (this_offset
== *offset
)
3368 count
+= is_unique_ancestor_worker (base
, iter
, offset
,
3370 embedded_offset
+ this_offset
,
3377 /* Like is_ancestor, but only returns true if BASE is a unique base
3378 class of the type of VAL. */
3381 is_unique_ancestor (struct type
*base
, struct value
*val
)
3385 return is_unique_ancestor_worker (base
, value_type (val
), &offset
,
3386 value_contents_for_printing (val
),
3387 value_embedded_offset (val
),
3388 value_address (val
), val
) == 1;
3392 /* Overload resolution. */
3394 /* Return the sum of the rank of A with the rank of B. */
3397 sum_ranks (struct rank a
, struct rank b
)
3400 c
.rank
= a
.rank
+ b
.rank
;
3401 c
.subrank
= a
.subrank
+ b
.subrank
;
3405 /* Compare rank A and B and return:
3407 1 if a is better than b
3408 -1 if b is better than a. */
3411 compare_ranks (struct rank a
, struct rank b
)
3413 if (a
.rank
== b
.rank
)
3415 if (a
.subrank
== b
.subrank
)
3417 if (a
.subrank
< b
.subrank
)
3419 if (a
.subrank
> b
.subrank
)
3423 if (a
.rank
< b
.rank
)
3426 /* a.rank > b.rank */
3430 /* Functions for overload resolution begin here. */
3432 /* Compare two badness vectors A and B and return the result.
3433 0 => A and B are identical
3434 1 => A and B are incomparable
3435 2 => A is better than B
3436 3 => A is worse than B */
3439 compare_badness (struct badness_vector
*a
, struct badness_vector
*b
)
3443 short found_pos
= 0; /* any positives in c? */
3444 short found_neg
= 0; /* any negatives in c? */
3446 /* differing lengths => incomparable */
3447 if (a
->length
!= b
->length
)
3450 /* Subtract b from a */
3451 for (i
= 0; i
< a
->length
; i
++)
3453 tmp
= compare_ranks (b
->rank
[i
], a
->rank
[i
]);
3463 return 1; /* incomparable */
3465 return 3; /* A > B */
3471 return 2; /* A < B */
3473 return 0; /* A == B */
3477 /* Rank a function by comparing its parameter types (PARMS, length
3478 NPARMS), to the types of an argument list (ARGS, length NARGS).
3479 Return a pointer to a badness vector. This has NARGS + 1
3482 struct badness_vector
*
3483 rank_function (struct type
**parms
, int nparms
,
3484 struct value
**args
, int nargs
)
3487 struct badness_vector
*bv
= XNEW (struct badness_vector
);
3488 int min_len
= nparms
< nargs
? nparms
: nargs
;
3490 bv
->length
= nargs
+ 1; /* add 1 for the length-match rank. */
3491 bv
->rank
= XNEWVEC (struct rank
, nargs
+ 1);
3493 /* First compare the lengths of the supplied lists.
3494 If there is a mismatch, set it to a high value. */
3496 /* pai/1997-06-03 FIXME: when we have debug info about default
3497 arguments and ellipsis parameter lists, we should consider those
3498 and rank the length-match more finely. */
3500 LENGTH_MATCH (bv
) = (nargs
!= nparms
)
3501 ? LENGTH_MISMATCH_BADNESS
3502 : EXACT_MATCH_BADNESS
;
3504 /* Now rank all the parameters of the candidate function. */
3505 for (i
= 1; i
<= min_len
; i
++)
3506 bv
->rank
[i
] = rank_one_type (parms
[i
- 1], value_type (args
[i
- 1]),
3509 /* If more arguments than parameters, add dummy entries. */
3510 for (i
= min_len
+ 1; i
<= nargs
; i
++)
3511 bv
->rank
[i
] = TOO_FEW_PARAMS_BADNESS
;
3516 /* Compare the names of two integer types, assuming that any sign
3517 qualifiers have been checked already. We do it this way because
3518 there may be an "int" in the name of one of the types. */
3521 integer_types_same_name_p (const char *first
, const char *second
)
3523 int first_p
, second_p
;
3525 /* If both are shorts, return 1; if neither is a short, keep
3527 first_p
= (strstr (first
, "short") != NULL
);
3528 second_p
= (strstr (second
, "short") != NULL
);
3529 if (first_p
&& second_p
)
3531 if (first_p
|| second_p
)
3534 /* Likewise for long. */
3535 first_p
= (strstr (first
, "long") != NULL
);
3536 second_p
= (strstr (second
, "long") != NULL
);
3537 if (first_p
&& second_p
)
3539 if (first_p
|| second_p
)
3542 /* Likewise for char. */
3543 first_p
= (strstr (first
, "char") != NULL
);
3544 second_p
= (strstr (second
, "char") != NULL
);
3545 if (first_p
&& second_p
)
3547 if (first_p
|| second_p
)
3550 /* They must both be ints. */
3554 /* Compares type A to type B returns 1 if the represent the same type
3558 types_equal (struct type
*a
, struct type
*b
)
3560 /* Identical type pointers. */
3561 /* However, this still doesn't catch all cases of same type for b
3562 and a. The reason is that builtin types are different from
3563 the same ones constructed from the object. */
3567 /* Resolve typedefs */
3568 if (TYPE_CODE (a
) == TYPE_CODE_TYPEDEF
)
3569 a
= check_typedef (a
);
3570 if (TYPE_CODE (b
) == TYPE_CODE_TYPEDEF
)
3571 b
= check_typedef (b
);
3573 /* If after resolving typedefs a and b are not of the same type
3574 code then they are not equal. */
3575 if (TYPE_CODE (a
) != TYPE_CODE (b
))
3578 /* If a and b are both pointers types or both reference types then
3579 they are equal of the same type iff the objects they refer to are
3580 of the same type. */
3581 if (TYPE_CODE (a
) == TYPE_CODE_PTR
3582 || TYPE_CODE (a
) == TYPE_CODE_REF
)
3583 return types_equal (TYPE_TARGET_TYPE (a
),
3584 TYPE_TARGET_TYPE (b
));
3586 /* Well, damnit, if the names are exactly the same, I'll say they
3587 are exactly the same. This happens when we generate method
3588 stubs. The types won't point to the same address, but they
3589 really are the same. */
3591 if (TYPE_NAME (a
) && TYPE_NAME (b
)
3592 && strcmp (TYPE_NAME (a
), TYPE_NAME (b
)) == 0)
3595 /* Check if identical after resolving typedefs. */
3599 /* Two function types are equal if their argument and return types
3601 if (TYPE_CODE (a
) == TYPE_CODE_FUNC
)
3605 if (TYPE_NFIELDS (a
) != TYPE_NFIELDS (b
))
3608 if (!types_equal (TYPE_TARGET_TYPE (a
), TYPE_TARGET_TYPE (b
)))
3611 for (i
= 0; i
< TYPE_NFIELDS (a
); ++i
)
3612 if (!types_equal (TYPE_FIELD_TYPE (a
, i
), TYPE_FIELD_TYPE (b
, i
)))
3621 /* Deep comparison of types. */
3623 /* An entry in the type-equality bcache. */
3625 typedef struct type_equality_entry
3627 struct type
*type1
, *type2
;
3628 } type_equality_entry_d
;
3630 DEF_VEC_O (type_equality_entry_d
);
3632 /* A helper function to compare two strings. Returns 1 if they are
3633 the same, 0 otherwise. Handles NULLs properly. */
3636 compare_maybe_null_strings (const char *s
, const char *t
)
3638 if (s
== NULL
&& t
!= NULL
)
3640 else if (s
!= NULL
&& t
== NULL
)
3642 else if (s
== NULL
&& t
== NULL
)
3644 return strcmp (s
, t
) == 0;
3647 /* A helper function for check_types_worklist that checks two types for
3648 "deep" equality. Returns non-zero if the types are considered the
3649 same, zero otherwise. */
3652 check_types_equal (struct type
*type1
, struct type
*type2
,
3653 VEC (type_equality_entry_d
) **worklist
)
3655 type1
= check_typedef (type1
);
3656 type2
= check_typedef (type2
);
3661 if (TYPE_CODE (type1
) != TYPE_CODE (type2
)
3662 || TYPE_LENGTH (type1
) != TYPE_LENGTH (type2
)
3663 || TYPE_UNSIGNED (type1
) != TYPE_UNSIGNED (type2
)
3664 || TYPE_NOSIGN (type1
) != TYPE_NOSIGN (type2
)
3665 || TYPE_VARARGS (type1
) != TYPE_VARARGS (type2
)
3666 || TYPE_VECTOR (type1
) != TYPE_VECTOR (type2
)
3667 || TYPE_NOTTEXT (type1
) != TYPE_NOTTEXT (type2
)
3668 || TYPE_INSTANCE_FLAGS (type1
) != TYPE_INSTANCE_FLAGS (type2
)
3669 || TYPE_NFIELDS (type1
) != TYPE_NFIELDS (type2
))
3672 if (!compare_maybe_null_strings (TYPE_TAG_NAME (type1
),
3673 TYPE_TAG_NAME (type2
)))
3675 if (!compare_maybe_null_strings (TYPE_NAME (type1
), TYPE_NAME (type2
)))
3678 if (TYPE_CODE (type1
) == TYPE_CODE_RANGE
)
3680 if (*TYPE_RANGE_DATA (type1
) != *TYPE_RANGE_DATA (type2
))
3687 for (i
= 0; i
< TYPE_NFIELDS (type1
); ++i
)
3689 const struct field
*field1
= &TYPE_FIELD (type1
, i
);
3690 const struct field
*field2
= &TYPE_FIELD (type2
, i
);
3691 struct type_equality_entry entry
;
3693 if (FIELD_ARTIFICIAL (*field1
) != FIELD_ARTIFICIAL (*field2
)
3694 || FIELD_BITSIZE (*field1
) != FIELD_BITSIZE (*field2
)
3695 || FIELD_LOC_KIND (*field1
) != FIELD_LOC_KIND (*field2
))
3697 if (!compare_maybe_null_strings (FIELD_NAME (*field1
),
3698 FIELD_NAME (*field2
)))
3700 switch (FIELD_LOC_KIND (*field1
))
3702 case FIELD_LOC_KIND_BITPOS
:
3703 if (FIELD_BITPOS (*field1
) != FIELD_BITPOS (*field2
))
3706 case FIELD_LOC_KIND_ENUMVAL
:
3707 if (FIELD_ENUMVAL (*field1
) != FIELD_ENUMVAL (*field2
))
3710 case FIELD_LOC_KIND_PHYSADDR
:
3711 if (FIELD_STATIC_PHYSADDR (*field1
)
3712 != FIELD_STATIC_PHYSADDR (*field2
))
3715 case FIELD_LOC_KIND_PHYSNAME
:
3716 if (!compare_maybe_null_strings (FIELD_STATIC_PHYSNAME (*field1
),
3717 FIELD_STATIC_PHYSNAME (*field2
)))
3720 case FIELD_LOC_KIND_DWARF_BLOCK
:
3722 struct dwarf2_locexpr_baton
*block1
, *block2
;
3724 block1
= FIELD_DWARF_BLOCK (*field1
);
3725 block2
= FIELD_DWARF_BLOCK (*field2
);
3726 if (block1
->per_cu
!= block2
->per_cu
3727 || block1
->size
!= block2
->size
3728 || memcmp (block1
->data
, block2
->data
, block1
->size
) != 0)
3733 internal_error (__FILE__
, __LINE__
, _("Unsupported field kind "
3734 "%d by check_types_equal"),
3735 FIELD_LOC_KIND (*field1
));
3738 entry
.type1
= FIELD_TYPE (*field1
);
3739 entry
.type2
= FIELD_TYPE (*field2
);
3740 VEC_safe_push (type_equality_entry_d
, *worklist
, &entry
);
3744 if (TYPE_TARGET_TYPE (type1
) != NULL
)
3746 struct type_equality_entry entry
;
3748 if (TYPE_TARGET_TYPE (type2
) == NULL
)
3751 entry
.type1
= TYPE_TARGET_TYPE (type1
);
3752 entry
.type2
= TYPE_TARGET_TYPE (type2
);
3753 VEC_safe_push (type_equality_entry_d
, *worklist
, &entry
);
3755 else if (TYPE_TARGET_TYPE (type2
) != NULL
)
3761 /* Check types on a worklist for equality. Returns zero if any pair
3762 is not equal, non-zero if they are all considered equal. */
3765 check_types_worklist (VEC (type_equality_entry_d
) **worklist
,
3766 struct bcache
*cache
)
3768 while (!VEC_empty (type_equality_entry_d
, *worklist
))
3770 struct type_equality_entry entry
;
3773 entry
= *VEC_last (type_equality_entry_d
, *worklist
);
3774 VEC_pop (type_equality_entry_d
, *worklist
);
3776 /* If the type pair has already been visited, we know it is
3778 bcache_full (&entry
, sizeof (entry
), cache
, &added
);
3782 if (check_types_equal (entry
.type1
, entry
.type2
, worklist
) == 0)
3789 /* Return non-zero if types TYPE1 and TYPE2 are equal, as determined by a
3790 "deep comparison". Otherwise return zero. */
3793 types_deeply_equal (struct type
*type1
, struct type
*type2
)
3795 struct gdb_exception except
= exception_none
;
3797 struct bcache
*cache
;
3798 VEC (type_equality_entry_d
) *worklist
= NULL
;
3799 struct type_equality_entry entry
;
3801 gdb_assert (type1
!= NULL
&& type2
!= NULL
);
3803 /* Early exit for the simple case. */
3807 cache
= bcache_xmalloc (NULL
, NULL
);
3809 entry
.type1
= type1
;
3810 entry
.type2
= type2
;
3811 VEC_safe_push (type_equality_entry_d
, worklist
, &entry
);
3813 /* check_types_worklist calls several nested helper functions, some
3814 of which can raise a GDB exception, so we just check and rethrow
3815 here. If there is a GDB exception, a comparison is not capable
3816 (or trusted), so exit. */
3819 result
= check_types_worklist (&worklist
, cache
);
3821 CATCH (ex
, RETURN_MASK_ALL
)
3827 bcache_xfree (cache
);
3828 VEC_free (type_equality_entry_d
, worklist
);
3830 /* Rethrow if there was a problem. */
3831 if (except
.reason
< 0)
3832 throw_exception (except
);
3837 /* Allocated status of type TYPE. Return zero if type TYPE is allocated.
3838 Otherwise return one. */
3841 type_not_allocated (const struct type
*type
)
3843 struct dynamic_prop
*prop
= TYPE_ALLOCATED_PROP (type
);
3845 return (prop
&& TYPE_DYN_PROP_KIND (prop
) == PROP_CONST
3846 && !TYPE_DYN_PROP_ADDR (prop
));
3849 /* Associated status of type TYPE. Return zero if type TYPE is associated.
3850 Otherwise return one. */
3853 type_not_associated (const struct type
*type
)
3855 struct dynamic_prop
*prop
= TYPE_ASSOCIATED_PROP (type
);
3857 return (prop
&& TYPE_DYN_PROP_KIND (prop
) == PROP_CONST
3858 && !TYPE_DYN_PROP_ADDR (prop
));
3861 /* Compare one type (PARM) for compatibility with another (ARG).
3862 * PARM is intended to be the parameter type of a function; and
3863 * ARG is the supplied argument's type. This function tests if
3864 * the latter can be converted to the former.
3865 * VALUE is the argument's value or NULL if none (or called recursively)
3867 * Return 0 if they are identical types;
3868 * Otherwise, return an integer which corresponds to how compatible
3869 * PARM is to ARG. The higher the return value, the worse the match.
3870 * Generally the "bad" conversions are all uniformly assigned a 100. */
3873 rank_one_type (struct type
*parm
, struct type
*arg
, struct value
*value
)
3875 struct rank rank
= {0,0};
3877 /* Resolve typedefs */
3878 if (TYPE_CODE (parm
) == TYPE_CODE_TYPEDEF
)
3879 parm
= check_typedef (parm
);
3880 if (TYPE_CODE (arg
) == TYPE_CODE_TYPEDEF
)
3881 arg
= check_typedef (arg
);
3883 if (TYPE_IS_REFERENCE (parm
) && value
!= NULL
)
3885 if (VALUE_LVAL (value
) == not_lval
)
3887 /* Rvalues should preferably bind to rvalue references or const
3888 lvalue references. */
3889 if (TYPE_CODE (parm
) == TYPE_CODE_RVALUE_REF
)
3890 rank
.subrank
= REFERENCE_CONVERSION_RVALUE
;
3891 else if (TYPE_CONST (TYPE_TARGET_TYPE (parm
)))
3892 rank
.subrank
= REFERENCE_CONVERSION_CONST_LVALUE
;
3894 return INCOMPATIBLE_TYPE_BADNESS
;
3895 return sum_ranks (rank
, REFERENCE_CONVERSION_BADNESS
);
3899 /* Lvalues should prefer lvalue overloads. */
3900 if (TYPE_CODE (parm
) == TYPE_CODE_RVALUE_REF
)
3902 rank
.subrank
= REFERENCE_CONVERSION_RVALUE
;
3903 return sum_ranks (rank
, REFERENCE_CONVERSION_BADNESS
);
3908 if (types_equal (parm
, arg
))
3910 struct type
*t1
= parm
;
3911 struct type
*t2
= arg
;
3913 /* For pointers and references, compare target type. */
3914 if (TYPE_CODE (parm
) == TYPE_CODE_PTR
|| TYPE_IS_REFERENCE (parm
))
3916 t1
= TYPE_TARGET_TYPE (parm
);
3917 t2
= TYPE_TARGET_TYPE (arg
);
3920 /* Make sure they are CV equal, too. */
3921 if (TYPE_CONST (t1
) != TYPE_CONST (t2
))
3922 rank
.subrank
|= CV_CONVERSION_CONST
;
3923 if (TYPE_VOLATILE (t1
) != TYPE_VOLATILE (t2
))
3924 rank
.subrank
|= CV_CONVERSION_VOLATILE
;
3925 if (rank
.subrank
!= 0)
3926 return sum_ranks (CV_CONVERSION_BADNESS
, rank
);
3927 return EXACT_MATCH_BADNESS
;
3930 /* See through references, since we can almost make non-references
3933 if (TYPE_IS_REFERENCE (arg
))
3934 return (sum_ranks (rank_one_type (parm
, TYPE_TARGET_TYPE (arg
), NULL
),
3935 REFERENCE_CONVERSION_BADNESS
));
3936 if (TYPE_IS_REFERENCE (parm
))
3937 return (sum_ranks (rank_one_type (TYPE_TARGET_TYPE (parm
), arg
, NULL
),
3938 REFERENCE_CONVERSION_BADNESS
));
3940 /* Debugging only. */
3941 fprintf_filtered (gdb_stderr
,
3942 "------ Arg is %s [%d], parm is %s [%d]\n",
3943 TYPE_NAME (arg
), TYPE_CODE (arg
),
3944 TYPE_NAME (parm
), TYPE_CODE (parm
));
3946 /* x -> y means arg of type x being supplied for parameter of type y. */
3948 switch (TYPE_CODE (parm
))
3951 switch (TYPE_CODE (arg
))
3955 /* Allowed pointer conversions are:
3956 (a) pointer to void-pointer conversion. */
3957 if (TYPE_CODE (TYPE_TARGET_TYPE (parm
)) == TYPE_CODE_VOID
)
3958 return VOID_PTR_CONVERSION_BADNESS
;
3960 /* (b) pointer to ancestor-pointer conversion. */
3961 rank
.subrank
= distance_to_ancestor (TYPE_TARGET_TYPE (parm
),
3962 TYPE_TARGET_TYPE (arg
),
3964 if (rank
.subrank
>= 0)
3965 return sum_ranks (BASE_PTR_CONVERSION_BADNESS
, rank
);
3967 return INCOMPATIBLE_TYPE_BADNESS
;
3968 case TYPE_CODE_ARRAY
:
3970 struct type
*t1
= TYPE_TARGET_TYPE (parm
);
3971 struct type
*t2
= TYPE_TARGET_TYPE (arg
);
3973 if (types_equal (t1
, t2
))
3975 /* Make sure they are CV equal. */
3976 if (TYPE_CONST (t1
) != TYPE_CONST (t2
))
3977 rank
.subrank
|= CV_CONVERSION_CONST
;
3978 if (TYPE_VOLATILE (t1
) != TYPE_VOLATILE (t2
))
3979 rank
.subrank
|= CV_CONVERSION_VOLATILE
;
3980 if (rank
.subrank
!= 0)
3981 return sum_ranks (CV_CONVERSION_BADNESS
, rank
);
3982 return EXACT_MATCH_BADNESS
;
3984 return INCOMPATIBLE_TYPE_BADNESS
;
3986 case TYPE_CODE_FUNC
:
3987 return rank_one_type (TYPE_TARGET_TYPE (parm
), arg
, NULL
);
3989 if (value
!= NULL
&& TYPE_CODE (value_type (value
)) == TYPE_CODE_INT
)
3991 if (value_as_long (value
) == 0)
3993 /* Null pointer conversion: allow it to be cast to a pointer.
3994 [4.10.1 of C++ standard draft n3290] */
3995 return NULL_POINTER_CONVERSION_BADNESS
;
3999 /* If type checking is disabled, allow the conversion. */
4000 if (!strict_type_checking
)
4001 return NS_INTEGER_POINTER_CONVERSION_BADNESS
;
4005 case TYPE_CODE_ENUM
:
4006 case TYPE_CODE_FLAGS
:
4007 case TYPE_CODE_CHAR
:
4008 case TYPE_CODE_RANGE
:
4009 case TYPE_CODE_BOOL
:
4011 return INCOMPATIBLE_TYPE_BADNESS
;
4013 case TYPE_CODE_ARRAY
:
4014 switch (TYPE_CODE (arg
))
4017 case TYPE_CODE_ARRAY
:
4018 return rank_one_type (TYPE_TARGET_TYPE (parm
),
4019 TYPE_TARGET_TYPE (arg
), NULL
);
4021 return INCOMPATIBLE_TYPE_BADNESS
;
4023 case TYPE_CODE_FUNC
:
4024 switch (TYPE_CODE (arg
))
4026 case TYPE_CODE_PTR
: /* funcptr -> func */
4027 return rank_one_type (parm
, TYPE_TARGET_TYPE (arg
), NULL
);
4029 return INCOMPATIBLE_TYPE_BADNESS
;
4032 switch (TYPE_CODE (arg
))
4035 if (TYPE_LENGTH (arg
) == TYPE_LENGTH (parm
))
4037 /* Deal with signed, unsigned, and plain chars and
4038 signed and unsigned ints. */
4039 if (TYPE_NOSIGN (parm
))
4041 /* This case only for character types. */
4042 if (TYPE_NOSIGN (arg
))
4043 return EXACT_MATCH_BADNESS
; /* plain char -> plain char */
4044 else /* signed/unsigned char -> plain char */
4045 return INTEGER_CONVERSION_BADNESS
;
4047 else if (TYPE_UNSIGNED (parm
))
4049 if (TYPE_UNSIGNED (arg
))
4051 /* unsigned int -> unsigned int, or
4052 unsigned long -> unsigned long */
4053 if (integer_types_same_name_p (TYPE_NAME (parm
),
4055 return EXACT_MATCH_BADNESS
;
4056 else if (integer_types_same_name_p (TYPE_NAME (arg
),
4058 && integer_types_same_name_p (TYPE_NAME (parm
),
4060 /* unsigned int -> unsigned long */
4061 return INTEGER_PROMOTION_BADNESS
;
4063 /* unsigned long -> unsigned int */
4064 return INTEGER_CONVERSION_BADNESS
;
4068 if (integer_types_same_name_p (TYPE_NAME (arg
),
4070 && integer_types_same_name_p (TYPE_NAME (parm
),
4072 /* signed long -> unsigned int */
4073 return INTEGER_CONVERSION_BADNESS
;
4075 /* signed int/long -> unsigned int/long */
4076 return INTEGER_CONVERSION_BADNESS
;
4079 else if (!TYPE_NOSIGN (arg
) && !TYPE_UNSIGNED (arg
))
4081 if (integer_types_same_name_p (TYPE_NAME (parm
),
4083 return EXACT_MATCH_BADNESS
;
4084 else if (integer_types_same_name_p (TYPE_NAME (arg
),
4086 && integer_types_same_name_p (TYPE_NAME (parm
),
4088 return INTEGER_PROMOTION_BADNESS
;
4090 return INTEGER_CONVERSION_BADNESS
;
4093 return INTEGER_CONVERSION_BADNESS
;
4095 else if (TYPE_LENGTH (arg
) < TYPE_LENGTH (parm
))
4096 return INTEGER_PROMOTION_BADNESS
;
4098 return INTEGER_CONVERSION_BADNESS
;
4099 case TYPE_CODE_ENUM
:
4100 case TYPE_CODE_FLAGS
:
4101 case TYPE_CODE_CHAR
:
4102 case TYPE_CODE_RANGE
:
4103 case TYPE_CODE_BOOL
:
4104 if (TYPE_DECLARED_CLASS (arg
))
4105 return INCOMPATIBLE_TYPE_BADNESS
;
4106 return INTEGER_PROMOTION_BADNESS
;
4108 return INT_FLOAT_CONVERSION_BADNESS
;
4110 return NS_POINTER_CONVERSION_BADNESS
;
4112 return INCOMPATIBLE_TYPE_BADNESS
;
4115 case TYPE_CODE_ENUM
:
4116 switch (TYPE_CODE (arg
))
4119 case TYPE_CODE_CHAR
:
4120 case TYPE_CODE_RANGE
:
4121 case TYPE_CODE_BOOL
:
4122 case TYPE_CODE_ENUM
:
4123 if (TYPE_DECLARED_CLASS (parm
) || TYPE_DECLARED_CLASS (arg
))
4124 return INCOMPATIBLE_TYPE_BADNESS
;
4125 return INTEGER_CONVERSION_BADNESS
;
4127 return INT_FLOAT_CONVERSION_BADNESS
;
4129 return INCOMPATIBLE_TYPE_BADNESS
;
4132 case TYPE_CODE_CHAR
:
4133 switch (TYPE_CODE (arg
))
4135 case TYPE_CODE_RANGE
:
4136 case TYPE_CODE_BOOL
:
4137 case TYPE_CODE_ENUM
:
4138 if (TYPE_DECLARED_CLASS (arg
))
4139 return INCOMPATIBLE_TYPE_BADNESS
;
4140 return INTEGER_CONVERSION_BADNESS
;
4142 return INT_FLOAT_CONVERSION_BADNESS
;
4144 if (TYPE_LENGTH (arg
) > TYPE_LENGTH (parm
))
4145 return INTEGER_CONVERSION_BADNESS
;
4146 else if (TYPE_LENGTH (arg
) < TYPE_LENGTH (parm
))
4147 return INTEGER_PROMOTION_BADNESS
;
4148 /* >>> !! else fall through !! <<< */
4149 case TYPE_CODE_CHAR
:
4150 /* Deal with signed, unsigned, and plain chars for C++ and
4151 with int cases falling through from previous case. */
4152 if (TYPE_NOSIGN (parm
))
4154 if (TYPE_NOSIGN (arg
))
4155 return EXACT_MATCH_BADNESS
;
4157 return INTEGER_CONVERSION_BADNESS
;
4159 else if (TYPE_UNSIGNED (parm
))
4161 if (TYPE_UNSIGNED (arg
))
4162 return EXACT_MATCH_BADNESS
;
4164 return INTEGER_PROMOTION_BADNESS
;
4166 else if (!TYPE_NOSIGN (arg
) && !TYPE_UNSIGNED (arg
))
4167 return EXACT_MATCH_BADNESS
;
4169 return INTEGER_CONVERSION_BADNESS
;
4171 return INCOMPATIBLE_TYPE_BADNESS
;
4174 case TYPE_CODE_RANGE
:
4175 switch (TYPE_CODE (arg
))
4178 case TYPE_CODE_CHAR
:
4179 case TYPE_CODE_RANGE
:
4180 case TYPE_CODE_BOOL
:
4181 case TYPE_CODE_ENUM
:
4182 return INTEGER_CONVERSION_BADNESS
;
4184 return INT_FLOAT_CONVERSION_BADNESS
;
4186 return INCOMPATIBLE_TYPE_BADNESS
;
4189 case TYPE_CODE_BOOL
:
4190 switch (TYPE_CODE (arg
))
4192 /* n3290 draft, section 4.12.1 (conv.bool):
4194 "A prvalue of arithmetic, unscoped enumeration, pointer, or
4195 pointer to member type can be converted to a prvalue of type
4196 bool. A zero value, null pointer value, or null member pointer
4197 value is converted to false; any other value is converted to
4198 true. A prvalue of type std::nullptr_t can be converted to a
4199 prvalue of type bool; the resulting value is false." */
4201 case TYPE_CODE_CHAR
:
4202 case TYPE_CODE_ENUM
:
4204 case TYPE_CODE_MEMBERPTR
:
4206 return BOOL_CONVERSION_BADNESS
;
4207 case TYPE_CODE_RANGE
:
4208 return INCOMPATIBLE_TYPE_BADNESS
;
4209 case TYPE_CODE_BOOL
:
4210 return EXACT_MATCH_BADNESS
;
4212 return INCOMPATIBLE_TYPE_BADNESS
;
4216 switch (TYPE_CODE (arg
))
4219 if (TYPE_LENGTH (arg
) < TYPE_LENGTH (parm
))
4220 return FLOAT_PROMOTION_BADNESS
;
4221 else if (TYPE_LENGTH (arg
) == TYPE_LENGTH (parm
))
4222 return EXACT_MATCH_BADNESS
;
4224 return FLOAT_CONVERSION_BADNESS
;
4226 case TYPE_CODE_BOOL
:
4227 case TYPE_CODE_ENUM
:
4228 case TYPE_CODE_RANGE
:
4229 case TYPE_CODE_CHAR
:
4230 return INT_FLOAT_CONVERSION_BADNESS
;
4232 return INCOMPATIBLE_TYPE_BADNESS
;
4235 case TYPE_CODE_COMPLEX
:
4236 switch (TYPE_CODE (arg
))
4237 { /* Strictly not needed for C++, but... */
4239 return FLOAT_PROMOTION_BADNESS
;
4240 case TYPE_CODE_COMPLEX
:
4241 return EXACT_MATCH_BADNESS
;
4243 return INCOMPATIBLE_TYPE_BADNESS
;
4246 case TYPE_CODE_STRUCT
:
4247 switch (TYPE_CODE (arg
))
4249 case TYPE_CODE_STRUCT
:
4250 /* Check for derivation */
4251 rank
.subrank
= distance_to_ancestor (parm
, arg
, 0);
4252 if (rank
.subrank
>= 0)
4253 return sum_ranks (BASE_CONVERSION_BADNESS
, rank
);
4254 /* else fall through */
4256 return INCOMPATIBLE_TYPE_BADNESS
;
4259 case TYPE_CODE_UNION
:
4260 switch (TYPE_CODE (arg
))
4262 case TYPE_CODE_UNION
:
4264 return INCOMPATIBLE_TYPE_BADNESS
;
4267 case TYPE_CODE_MEMBERPTR
:
4268 switch (TYPE_CODE (arg
))
4271 return INCOMPATIBLE_TYPE_BADNESS
;
4274 case TYPE_CODE_METHOD
:
4275 switch (TYPE_CODE (arg
))
4279 return INCOMPATIBLE_TYPE_BADNESS
;
4283 switch (TYPE_CODE (arg
))
4287 return INCOMPATIBLE_TYPE_BADNESS
;
4292 switch (TYPE_CODE (arg
))
4296 return rank_one_type (TYPE_FIELD_TYPE (parm
, 0),
4297 TYPE_FIELD_TYPE (arg
, 0), NULL
);
4299 return INCOMPATIBLE_TYPE_BADNESS
;
4302 case TYPE_CODE_VOID
:
4304 return INCOMPATIBLE_TYPE_BADNESS
;
4305 } /* switch (TYPE_CODE (arg)) */
4308 /* End of functions for overload resolution. */
4310 /* Routines to pretty-print types. */
4313 print_bit_vector (B_TYPE
*bits
, int nbits
)
4317 for (bitno
= 0; bitno
< nbits
; bitno
++)
4319 if ((bitno
% 8) == 0)
4321 puts_filtered (" ");
4323 if (B_TST (bits
, bitno
))
4324 printf_filtered (("1"));
4326 printf_filtered (("0"));
4330 /* Note the first arg should be the "this" pointer, we may not want to
4331 include it since we may get into a infinitely recursive
4335 print_args (struct field
*args
, int nargs
, int spaces
)
4341 for (i
= 0; i
< nargs
; i
++)
4343 printfi_filtered (spaces
, "[%d] name '%s'\n", i
,
4344 args
[i
].name
!= NULL
? args
[i
].name
: "<NULL>");
4345 recursive_dump_type (args
[i
].type
, spaces
+ 2);
4351 field_is_static (struct field
*f
)
4353 /* "static" fields are the fields whose location is not relative
4354 to the address of the enclosing struct. It would be nice to
4355 have a dedicated flag that would be set for static fields when
4356 the type is being created. But in practice, checking the field
4357 loc_kind should give us an accurate answer. */
4358 return (FIELD_LOC_KIND (*f
) == FIELD_LOC_KIND_PHYSNAME
4359 || FIELD_LOC_KIND (*f
) == FIELD_LOC_KIND_PHYSADDR
);
4363 dump_fn_fieldlists (struct type
*type
, int spaces
)
4369 printfi_filtered (spaces
, "fn_fieldlists ");
4370 gdb_print_host_address (TYPE_FN_FIELDLISTS (type
), gdb_stdout
);
4371 printf_filtered ("\n");
4372 for (method_idx
= 0; method_idx
< TYPE_NFN_FIELDS (type
); method_idx
++)
4374 f
= TYPE_FN_FIELDLIST1 (type
, method_idx
);
4375 printfi_filtered (spaces
+ 2, "[%d] name '%s' (",
4377 TYPE_FN_FIELDLIST_NAME (type
, method_idx
));
4378 gdb_print_host_address (TYPE_FN_FIELDLIST_NAME (type
, method_idx
),
4380 printf_filtered (_(") length %d\n"),
4381 TYPE_FN_FIELDLIST_LENGTH (type
, method_idx
));
4382 for (overload_idx
= 0;
4383 overload_idx
< TYPE_FN_FIELDLIST_LENGTH (type
, method_idx
);
4386 printfi_filtered (spaces
+ 4, "[%d] physname '%s' (",
4388 TYPE_FN_FIELD_PHYSNAME (f
, overload_idx
));
4389 gdb_print_host_address (TYPE_FN_FIELD_PHYSNAME (f
, overload_idx
),
4391 printf_filtered (")\n");
4392 printfi_filtered (spaces
+ 8, "type ");
4393 gdb_print_host_address (TYPE_FN_FIELD_TYPE (f
, overload_idx
),
4395 printf_filtered ("\n");
4397 recursive_dump_type (TYPE_FN_FIELD_TYPE (f
, overload_idx
),
4400 printfi_filtered (spaces
+ 8, "args ");
4401 gdb_print_host_address (TYPE_FN_FIELD_ARGS (f
, overload_idx
),
4403 printf_filtered ("\n");
4404 print_args (TYPE_FN_FIELD_ARGS (f
, overload_idx
),
4405 TYPE_NFIELDS (TYPE_FN_FIELD_TYPE (f
, overload_idx
)),
4407 printfi_filtered (spaces
+ 8, "fcontext ");
4408 gdb_print_host_address (TYPE_FN_FIELD_FCONTEXT (f
, overload_idx
),
4410 printf_filtered ("\n");
4412 printfi_filtered (spaces
+ 8, "is_const %d\n",
4413 TYPE_FN_FIELD_CONST (f
, overload_idx
));
4414 printfi_filtered (spaces
+ 8, "is_volatile %d\n",
4415 TYPE_FN_FIELD_VOLATILE (f
, overload_idx
));
4416 printfi_filtered (spaces
+ 8, "is_private %d\n",
4417 TYPE_FN_FIELD_PRIVATE (f
, overload_idx
));
4418 printfi_filtered (spaces
+ 8, "is_protected %d\n",
4419 TYPE_FN_FIELD_PROTECTED (f
, overload_idx
));
4420 printfi_filtered (spaces
+ 8, "is_stub %d\n",
4421 TYPE_FN_FIELD_STUB (f
, overload_idx
));
4422 printfi_filtered (spaces
+ 8, "voffset %u\n",
4423 TYPE_FN_FIELD_VOFFSET (f
, overload_idx
));
4429 print_cplus_stuff (struct type
*type
, int spaces
)
4431 printfi_filtered (spaces
, "vptr_fieldno %d\n", TYPE_VPTR_FIELDNO (type
));
4432 printfi_filtered (spaces
, "vptr_basetype ");
4433 gdb_print_host_address (TYPE_VPTR_BASETYPE (type
), gdb_stdout
);
4434 puts_filtered ("\n");
4435 if (TYPE_VPTR_BASETYPE (type
) != NULL
)
4436 recursive_dump_type (TYPE_VPTR_BASETYPE (type
), spaces
+ 2);
4438 printfi_filtered (spaces
, "n_baseclasses %d\n",
4439 TYPE_N_BASECLASSES (type
));
4440 printfi_filtered (spaces
, "nfn_fields %d\n",
4441 TYPE_NFN_FIELDS (type
));
4442 if (TYPE_N_BASECLASSES (type
) > 0)
4444 printfi_filtered (spaces
, "virtual_field_bits (%d bits at *",
4445 TYPE_N_BASECLASSES (type
));
4446 gdb_print_host_address (TYPE_FIELD_VIRTUAL_BITS (type
),
4448 printf_filtered (")");
4450 print_bit_vector (TYPE_FIELD_VIRTUAL_BITS (type
),
4451 TYPE_N_BASECLASSES (type
));
4452 puts_filtered ("\n");
4454 if (TYPE_NFIELDS (type
) > 0)
4456 if (TYPE_FIELD_PRIVATE_BITS (type
) != NULL
)
4458 printfi_filtered (spaces
,
4459 "private_field_bits (%d bits at *",
4460 TYPE_NFIELDS (type
));
4461 gdb_print_host_address (TYPE_FIELD_PRIVATE_BITS (type
),
4463 printf_filtered (")");
4464 print_bit_vector (TYPE_FIELD_PRIVATE_BITS (type
),
4465 TYPE_NFIELDS (type
));
4466 puts_filtered ("\n");
4468 if (TYPE_FIELD_PROTECTED_BITS (type
) != NULL
)
4470 printfi_filtered (spaces
,
4471 "protected_field_bits (%d bits at *",
4472 TYPE_NFIELDS (type
));
4473 gdb_print_host_address (TYPE_FIELD_PROTECTED_BITS (type
),
4475 printf_filtered (")");
4476 print_bit_vector (TYPE_FIELD_PROTECTED_BITS (type
),
4477 TYPE_NFIELDS (type
));
4478 puts_filtered ("\n");
4481 if (TYPE_NFN_FIELDS (type
) > 0)
4483 dump_fn_fieldlists (type
, spaces
);
4487 /* Print the contents of the TYPE's type_specific union, assuming that
4488 its type-specific kind is TYPE_SPECIFIC_GNAT_STUFF. */
4491 print_gnat_stuff (struct type
*type
, int spaces
)
4493 struct type
*descriptive_type
= TYPE_DESCRIPTIVE_TYPE (type
);
4495 if (descriptive_type
== NULL
)
4496 printfi_filtered (spaces
+ 2, "no descriptive type\n");
4499 printfi_filtered (spaces
+ 2, "descriptive type\n");
4500 recursive_dump_type (descriptive_type
, spaces
+ 4);
4504 static struct obstack dont_print_type_obstack
;
4507 recursive_dump_type (struct type
*type
, int spaces
)
4512 obstack_begin (&dont_print_type_obstack
, 0);
4514 if (TYPE_NFIELDS (type
) > 0
4515 || (HAVE_CPLUS_STRUCT (type
) && TYPE_NFN_FIELDS (type
) > 0))
4517 struct type
**first_dont_print
4518 = (struct type
**) obstack_base (&dont_print_type_obstack
);
4520 int i
= (struct type
**)
4521 obstack_next_free (&dont_print_type_obstack
) - first_dont_print
;
4525 if (type
== first_dont_print
[i
])
4527 printfi_filtered (spaces
, "type node ");
4528 gdb_print_host_address (type
, gdb_stdout
);
4529 printf_filtered (_(" <same as already seen type>\n"));
4534 obstack_ptr_grow (&dont_print_type_obstack
, type
);
4537 printfi_filtered (spaces
, "type node ");
4538 gdb_print_host_address (type
, gdb_stdout
);
4539 printf_filtered ("\n");
4540 printfi_filtered (spaces
, "name '%s' (",
4541 TYPE_NAME (type
) ? TYPE_NAME (type
) : "<NULL>");
4542 gdb_print_host_address (TYPE_NAME (type
), gdb_stdout
);
4543 printf_filtered (")\n");
4544 printfi_filtered (spaces
, "tagname '%s' (",
4545 TYPE_TAG_NAME (type
) ? TYPE_TAG_NAME (type
) : "<NULL>");
4546 gdb_print_host_address (TYPE_TAG_NAME (type
), gdb_stdout
);
4547 printf_filtered (")\n");
4548 printfi_filtered (spaces
, "code 0x%x ", TYPE_CODE (type
));
4549 switch (TYPE_CODE (type
))
4551 case TYPE_CODE_UNDEF
:
4552 printf_filtered ("(TYPE_CODE_UNDEF)");
4555 printf_filtered ("(TYPE_CODE_PTR)");
4557 case TYPE_CODE_ARRAY
:
4558 printf_filtered ("(TYPE_CODE_ARRAY)");
4560 case TYPE_CODE_STRUCT
:
4561 printf_filtered ("(TYPE_CODE_STRUCT)");
4563 case TYPE_CODE_UNION
:
4564 printf_filtered ("(TYPE_CODE_UNION)");
4566 case TYPE_CODE_ENUM
:
4567 printf_filtered ("(TYPE_CODE_ENUM)");
4569 case TYPE_CODE_FLAGS
:
4570 printf_filtered ("(TYPE_CODE_FLAGS)");
4572 case TYPE_CODE_FUNC
:
4573 printf_filtered ("(TYPE_CODE_FUNC)");
4576 printf_filtered ("(TYPE_CODE_INT)");
4579 printf_filtered ("(TYPE_CODE_FLT)");
4581 case TYPE_CODE_VOID
:
4582 printf_filtered ("(TYPE_CODE_VOID)");
4585 printf_filtered ("(TYPE_CODE_SET)");
4587 case TYPE_CODE_RANGE
:
4588 printf_filtered ("(TYPE_CODE_RANGE)");
4590 case TYPE_CODE_STRING
:
4591 printf_filtered ("(TYPE_CODE_STRING)");
4593 case TYPE_CODE_ERROR
:
4594 printf_filtered ("(TYPE_CODE_ERROR)");
4596 case TYPE_CODE_MEMBERPTR
:
4597 printf_filtered ("(TYPE_CODE_MEMBERPTR)");
4599 case TYPE_CODE_METHODPTR
:
4600 printf_filtered ("(TYPE_CODE_METHODPTR)");
4602 case TYPE_CODE_METHOD
:
4603 printf_filtered ("(TYPE_CODE_METHOD)");
4606 printf_filtered ("(TYPE_CODE_REF)");
4608 case TYPE_CODE_CHAR
:
4609 printf_filtered ("(TYPE_CODE_CHAR)");
4611 case TYPE_CODE_BOOL
:
4612 printf_filtered ("(TYPE_CODE_BOOL)");
4614 case TYPE_CODE_COMPLEX
:
4615 printf_filtered ("(TYPE_CODE_COMPLEX)");
4617 case TYPE_CODE_TYPEDEF
:
4618 printf_filtered ("(TYPE_CODE_TYPEDEF)");
4620 case TYPE_CODE_NAMESPACE
:
4621 printf_filtered ("(TYPE_CODE_NAMESPACE)");
4624 printf_filtered ("(UNKNOWN TYPE CODE)");
4627 puts_filtered ("\n");
4628 printfi_filtered (spaces
, "length %d\n", TYPE_LENGTH (type
));
4629 if (TYPE_OBJFILE_OWNED (type
))
4631 printfi_filtered (spaces
, "objfile ");
4632 gdb_print_host_address (TYPE_OWNER (type
).objfile
, gdb_stdout
);
4636 printfi_filtered (spaces
, "gdbarch ");
4637 gdb_print_host_address (TYPE_OWNER (type
).gdbarch
, gdb_stdout
);
4639 printf_filtered ("\n");
4640 printfi_filtered (spaces
, "target_type ");
4641 gdb_print_host_address (TYPE_TARGET_TYPE (type
), gdb_stdout
);
4642 printf_filtered ("\n");
4643 if (TYPE_TARGET_TYPE (type
) != NULL
)
4645 recursive_dump_type (TYPE_TARGET_TYPE (type
), spaces
+ 2);
4647 printfi_filtered (spaces
, "pointer_type ");
4648 gdb_print_host_address (TYPE_POINTER_TYPE (type
), gdb_stdout
);
4649 printf_filtered ("\n");
4650 printfi_filtered (spaces
, "reference_type ");
4651 gdb_print_host_address (TYPE_REFERENCE_TYPE (type
), gdb_stdout
);
4652 printf_filtered ("\n");
4653 printfi_filtered (spaces
, "type_chain ");
4654 gdb_print_host_address (TYPE_CHAIN (type
), gdb_stdout
);
4655 printf_filtered ("\n");
4656 printfi_filtered (spaces
, "instance_flags 0x%x",
4657 TYPE_INSTANCE_FLAGS (type
));
4658 if (TYPE_CONST (type
))
4660 puts_filtered (" TYPE_CONST");
4662 if (TYPE_VOLATILE (type
))
4664 puts_filtered (" TYPE_VOLATILE");
4666 if (TYPE_CODE_SPACE (type
))
4668 puts_filtered (" TYPE_CODE_SPACE");
4670 if (TYPE_DATA_SPACE (type
))
4672 puts_filtered (" TYPE_DATA_SPACE");
4674 if (TYPE_ADDRESS_CLASS_1 (type
))
4676 puts_filtered (" TYPE_ADDRESS_CLASS_1");
4678 if (TYPE_ADDRESS_CLASS_2 (type
))
4680 puts_filtered (" TYPE_ADDRESS_CLASS_2");
4682 if (TYPE_RESTRICT (type
))
4684 puts_filtered (" TYPE_RESTRICT");
4686 if (TYPE_ATOMIC (type
))
4688 puts_filtered (" TYPE_ATOMIC");
4690 puts_filtered ("\n");
4692 printfi_filtered (spaces
, "flags");
4693 if (TYPE_UNSIGNED (type
))
4695 puts_filtered (" TYPE_UNSIGNED");
4697 if (TYPE_NOSIGN (type
))
4699 puts_filtered (" TYPE_NOSIGN");
4701 if (TYPE_STUB (type
))
4703 puts_filtered (" TYPE_STUB");
4705 if (TYPE_TARGET_STUB (type
))
4707 puts_filtered (" TYPE_TARGET_STUB");
4709 if (TYPE_PROTOTYPED (type
))
4711 puts_filtered (" TYPE_PROTOTYPED");
4713 if (TYPE_INCOMPLETE (type
))
4715 puts_filtered (" TYPE_INCOMPLETE");
4717 if (TYPE_VARARGS (type
))
4719 puts_filtered (" TYPE_VARARGS");
4721 /* This is used for things like AltiVec registers on ppc. Gcc emits
4722 an attribute for the array type, which tells whether or not we
4723 have a vector, instead of a regular array. */
4724 if (TYPE_VECTOR (type
))
4726 puts_filtered (" TYPE_VECTOR");
4728 if (TYPE_FIXED_INSTANCE (type
))
4730 puts_filtered (" TYPE_FIXED_INSTANCE");
4732 if (TYPE_STUB_SUPPORTED (type
))
4734 puts_filtered (" TYPE_STUB_SUPPORTED");
4736 if (TYPE_NOTTEXT (type
))
4738 puts_filtered (" TYPE_NOTTEXT");
4740 puts_filtered ("\n");
4741 printfi_filtered (spaces
, "nfields %d ", TYPE_NFIELDS (type
));
4742 gdb_print_host_address (TYPE_FIELDS (type
), gdb_stdout
);
4743 puts_filtered ("\n");
4744 for (idx
= 0; idx
< TYPE_NFIELDS (type
); idx
++)
4746 if (TYPE_CODE (type
) == TYPE_CODE_ENUM
)
4747 printfi_filtered (spaces
+ 2,
4748 "[%d] enumval %s type ",
4749 idx
, plongest (TYPE_FIELD_ENUMVAL (type
, idx
)));
4751 printfi_filtered (spaces
+ 2,
4752 "[%d] bitpos %s bitsize %d type ",
4753 idx
, plongest (TYPE_FIELD_BITPOS (type
, idx
)),
4754 TYPE_FIELD_BITSIZE (type
, idx
));
4755 gdb_print_host_address (TYPE_FIELD_TYPE (type
, idx
), gdb_stdout
);
4756 printf_filtered (" name '%s' (",
4757 TYPE_FIELD_NAME (type
, idx
) != NULL
4758 ? TYPE_FIELD_NAME (type
, idx
)
4760 gdb_print_host_address (TYPE_FIELD_NAME (type
, idx
), gdb_stdout
);
4761 printf_filtered (")\n");
4762 if (TYPE_FIELD_TYPE (type
, idx
) != NULL
)
4764 recursive_dump_type (TYPE_FIELD_TYPE (type
, idx
), spaces
+ 4);
4767 if (TYPE_CODE (type
) == TYPE_CODE_RANGE
)
4769 printfi_filtered (spaces
, "low %s%s high %s%s\n",
4770 plongest (TYPE_LOW_BOUND (type
)),
4771 TYPE_LOW_BOUND_UNDEFINED (type
) ? " (undefined)" : "",
4772 plongest (TYPE_HIGH_BOUND (type
)),
4773 TYPE_HIGH_BOUND_UNDEFINED (type
)
4774 ? " (undefined)" : "");
4777 switch (TYPE_SPECIFIC_FIELD (type
))
4779 case TYPE_SPECIFIC_CPLUS_STUFF
:
4780 printfi_filtered (spaces
, "cplus_stuff ");
4781 gdb_print_host_address (TYPE_CPLUS_SPECIFIC (type
),
4783 puts_filtered ("\n");
4784 print_cplus_stuff (type
, spaces
);
4787 case TYPE_SPECIFIC_GNAT_STUFF
:
4788 printfi_filtered (spaces
, "gnat_stuff ");
4789 gdb_print_host_address (TYPE_GNAT_SPECIFIC (type
), gdb_stdout
);
4790 puts_filtered ("\n");
4791 print_gnat_stuff (type
, spaces
);
4794 case TYPE_SPECIFIC_FLOATFORMAT
:
4795 printfi_filtered (spaces
, "floatformat ");
4796 if (TYPE_FLOATFORMAT (type
) == NULL
4797 || TYPE_FLOATFORMAT (type
)->name
== NULL
)
4798 puts_filtered ("(null)");
4800 puts_filtered (TYPE_FLOATFORMAT (type
)->name
);
4801 puts_filtered ("\n");
4804 case TYPE_SPECIFIC_FUNC
:
4805 printfi_filtered (spaces
, "calling_convention %d\n",
4806 TYPE_CALLING_CONVENTION (type
));
4807 /* tail_call_list is not printed. */
4810 case TYPE_SPECIFIC_SELF_TYPE
:
4811 printfi_filtered (spaces
, "self_type ");
4812 gdb_print_host_address (TYPE_SELF_TYPE (type
), gdb_stdout
);
4813 puts_filtered ("\n");
4818 obstack_free (&dont_print_type_obstack
, NULL
);
4821 /* Trivial helpers for the libiberty hash table, for mapping one
4824 struct type_pair
: public allocate_on_obstack
4826 type_pair (struct type
*old_
, struct type
*newobj_
)
4827 : old (old_
), newobj (newobj_
)
4830 struct type
* const old
, * const newobj
;
4834 type_pair_hash (const void *item
)
4836 const struct type_pair
*pair
= (const struct type_pair
*) item
;
4838 return htab_hash_pointer (pair
->old
);
4842 type_pair_eq (const void *item_lhs
, const void *item_rhs
)
4844 const struct type_pair
*lhs
= (const struct type_pair
*) item_lhs
;
4845 const struct type_pair
*rhs
= (const struct type_pair
*) item_rhs
;
4847 return lhs
->old
== rhs
->old
;
4850 /* Allocate the hash table used by copy_type_recursive to walk
4851 types without duplicates. We use OBJFILE's obstack, because
4852 OBJFILE is about to be deleted. */
4855 create_copied_types_hash (struct objfile
*objfile
)
4857 return htab_create_alloc_ex (1, type_pair_hash
, type_pair_eq
,
4858 NULL
, &objfile
->objfile_obstack
,
4859 hashtab_obstack_allocate
,
4860 dummy_obstack_deallocate
);
4863 /* Recursively copy (deep copy) a dynamic attribute list of a type. */
4865 static struct dynamic_prop_list
*
4866 copy_dynamic_prop_list (struct obstack
*objfile_obstack
,
4867 struct dynamic_prop_list
*list
)
4869 struct dynamic_prop_list
*copy
= list
;
4870 struct dynamic_prop_list
**node_ptr
= ©
;
4872 while (*node_ptr
!= NULL
)
4874 struct dynamic_prop_list
*node_copy
;
4876 node_copy
= ((struct dynamic_prop_list
*)
4877 obstack_copy (objfile_obstack
, *node_ptr
,
4878 sizeof (struct dynamic_prop_list
)));
4879 node_copy
->prop
= (*node_ptr
)->prop
;
4880 *node_ptr
= node_copy
;
4882 node_ptr
= &node_copy
->next
;
4888 /* Recursively copy (deep copy) TYPE, if it is associated with
4889 OBJFILE. Return a new type owned by the gdbarch associated with the type, a
4890 saved type if we have already visited TYPE (using COPIED_TYPES), or TYPE if
4891 it is not associated with OBJFILE. */
4894 copy_type_recursive (struct objfile
*objfile
,
4896 htab_t copied_types
)
4899 struct type
*new_type
;
4901 if (! TYPE_OBJFILE_OWNED (type
))
4904 /* This type shouldn't be pointing to any types in other objfiles;
4905 if it did, the type might disappear unexpectedly. */
4906 gdb_assert (TYPE_OBJFILE (type
) == objfile
);
4908 struct type_pair
pair (type
, nullptr);
4910 slot
= htab_find_slot (copied_types
, &pair
, INSERT
);
4912 return ((struct type_pair
*) *slot
)->newobj
;
4914 new_type
= alloc_type_arch (get_type_arch (type
));
4916 /* We must add the new type to the hash table immediately, in case
4917 we encounter this type again during a recursive call below. */
4918 struct type_pair
*stored
4919 = new (&objfile
->objfile_obstack
) struct type_pair (type
, new_type
);
4923 /* Copy the common fields of types. For the main type, we simply
4924 copy the entire thing and then update specific fields as needed. */
4925 *TYPE_MAIN_TYPE (new_type
) = *TYPE_MAIN_TYPE (type
);
4926 TYPE_OBJFILE_OWNED (new_type
) = 0;
4927 TYPE_OWNER (new_type
).gdbarch
= get_type_arch (type
);
4929 if (TYPE_NAME (type
))
4930 TYPE_NAME (new_type
) = xstrdup (TYPE_NAME (type
));
4931 if (TYPE_TAG_NAME (type
))
4932 TYPE_TAG_NAME (new_type
) = xstrdup (TYPE_TAG_NAME (type
));
4934 TYPE_INSTANCE_FLAGS (new_type
) = TYPE_INSTANCE_FLAGS (type
);
4935 TYPE_LENGTH (new_type
) = TYPE_LENGTH (type
);
4937 /* Copy the fields. */
4938 if (TYPE_NFIELDS (type
))
4942 nfields
= TYPE_NFIELDS (type
);
4943 TYPE_FIELDS (new_type
) = XCNEWVEC (struct field
, nfields
);
4944 for (i
= 0; i
< nfields
; i
++)
4946 TYPE_FIELD_ARTIFICIAL (new_type
, i
) =
4947 TYPE_FIELD_ARTIFICIAL (type
, i
);
4948 TYPE_FIELD_BITSIZE (new_type
, i
) = TYPE_FIELD_BITSIZE (type
, i
);
4949 if (TYPE_FIELD_TYPE (type
, i
))
4950 TYPE_FIELD_TYPE (new_type
, i
)
4951 = copy_type_recursive (objfile
, TYPE_FIELD_TYPE (type
, i
),
4953 if (TYPE_FIELD_NAME (type
, i
))
4954 TYPE_FIELD_NAME (new_type
, i
) =
4955 xstrdup (TYPE_FIELD_NAME (type
, i
));
4956 switch (TYPE_FIELD_LOC_KIND (type
, i
))
4958 case FIELD_LOC_KIND_BITPOS
:
4959 SET_FIELD_BITPOS (TYPE_FIELD (new_type
, i
),
4960 TYPE_FIELD_BITPOS (type
, i
));
4962 case FIELD_LOC_KIND_ENUMVAL
:
4963 SET_FIELD_ENUMVAL (TYPE_FIELD (new_type
, i
),
4964 TYPE_FIELD_ENUMVAL (type
, i
));
4966 case FIELD_LOC_KIND_PHYSADDR
:
4967 SET_FIELD_PHYSADDR (TYPE_FIELD (new_type
, i
),
4968 TYPE_FIELD_STATIC_PHYSADDR (type
, i
));
4970 case FIELD_LOC_KIND_PHYSNAME
:
4971 SET_FIELD_PHYSNAME (TYPE_FIELD (new_type
, i
),
4972 xstrdup (TYPE_FIELD_STATIC_PHYSNAME (type
,
4976 internal_error (__FILE__
, __LINE__
,
4977 _("Unexpected type field location kind: %d"),
4978 TYPE_FIELD_LOC_KIND (type
, i
));
4983 /* For range types, copy the bounds information. */
4984 if (TYPE_CODE (type
) == TYPE_CODE_RANGE
)
4986 TYPE_RANGE_DATA (new_type
) = XNEW (struct range_bounds
);
4987 *TYPE_RANGE_DATA (new_type
) = *TYPE_RANGE_DATA (type
);
4990 if (TYPE_DYN_PROP_LIST (type
) != NULL
)
4991 TYPE_DYN_PROP_LIST (new_type
)
4992 = copy_dynamic_prop_list (&objfile
->objfile_obstack
,
4993 TYPE_DYN_PROP_LIST (type
));
4996 /* Copy pointers to other types. */
4997 if (TYPE_TARGET_TYPE (type
))
4998 TYPE_TARGET_TYPE (new_type
) =
4999 copy_type_recursive (objfile
,
5000 TYPE_TARGET_TYPE (type
),
5003 /* Maybe copy the type_specific bits.
5005 NOTE drow/2005-12-09: We do not copy the C++-specific bits like
5006 base classes and methods. There's no fundamental reason why we
5007 can't, but at the moment it is not needed. */
5009 switch (TYPE_SPECIFIC_FIELD (type
))
5011 case TYPE_SPECIFIC_NONE
:
5013 case TYPE_SPECIFIC_FUNC
:
5014 INIT_FUNC_SPECIFIC (new_type
);
5015 TYPE_CALLING_CONVENTION (new_type
) = TYPE_CALLING_CONVENTION (type
);
5016 TYPE_NO_RETURN (new_type
) = TYPE_NO_RETURN (type
);
5017 TYPE_TAIL_CALL_LIST (new_type
) = NULL
;
5019 case TYPE_SPECIFIC_FLOATFORMAT
:
5020 TYPE_FLOATFORMAT (new_type
) = TYPE_FLOATFORMAT (type
);
5022 case TYPE_SPECIFIC_CPLUS_STUFF
:
5023 INIT_CPLUS_SPECIFIC (new_type
);
5025 case TYPE_SPECIFIC_GNAT_STUFF
:
5026 INIT_GNAT_SPECIFIC (new_type
);
5028 case TYPE_SPECIFIC_SELF_TYPE
:
5029 set_type_self_type (new_type
,
5030 copy_type_recursive (objfile
, TYPE_SELF_TYPE (type
),
5034 gdb_assert_not_reached ("bad type_specific_kind");
5040 /* Make a copy of the given TYPE, except that the pointer & reference
5041 types are not preserved.
5043 This function assumes that the given type has an associated objfile.
5044 This objfile is used to allocate the new type. */
5047 copy_type (const struct type
*type
)
5049 struct type
*new_type
;
5051 gdb_assert (TYPE_OBJFILE_OWNED (type
));
5053 new_type
= alloc_type_copy (type
);
5054 TYPE_INSTANCE_FLAGS (new_type
) = TYPE_INSTANCE_FLAGS (type
);
5055 TYPE_LENGTH (new_type
) = TYPE_LENGTH (type
);
5056 memcpy (TYPE_MAIN_TYPE (new_type
), TYPE_MAIN_TYPE (type
),
5057 sizeof (struct main_type
));
5058 if (TYPE_DYN_PROP_LIST (type
) != NULL
)
5059 TYPE_DYN_PROP_LIST (new_type
)
5060 = copy_dynamic_prop_list (&TYPE_OBJFILE (type
) -> objfile_obstack
,
5061 TYPE_DYN_PROP_LIST (type
));
5066 /* Helper functions to initialize architecture-specific types. */
5068 /* Allocate a type structure associated with GDBARCH and set its
5069 CODE, LENGTH, and NAME fields. */
5072 arch_type (struct gdbarch
*gdbarch
,
5073 enum type_code code
, int bit
, const char *name
)
5077 type
= alloc_type_arch (gdbarch
);
5078 set_type_code (type
, code
);
5079 gdb_assert ((bit
% TARGET_CHAR_BIT
) == 0);
5080 TYPE_LENGTH (type
) = bit
/ TARGET_CHAR_BIT
;
5083 TYPE_NAME (type
) = gdbarch_obstack_strdup (gdbarch
, name
);
5088 /* Allocate a TYPE_CODE_INT type structure associated with GDBARCH.
5089 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
5090 the type's TYPE_UNSIGNED flag. NAME is the type name. */
5093 arch_integer_type (struct gdbarch
*gdbarch
,
5094 int bit
, int unsigned_p
, const char *name
)
5098 t
= arch_type (gdbarch
, TYPE_CODE_INT
, bit
, name
);
5100 TYPE_UNSIGNED (t
) = 1;
5105 /* Allocate a TYPE_CODE_CHAR type structure associated with GDBARCH.
5106 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
5107 the type's TYPE_UNSIGNED flag. NAME is the type name. */
5110 arch_character_type (struct gdbarch
*gdbarch
,
5111 int bit
, int unsigned_p
, const char *name
)
5115 t
= arch_type (gdbarch
, TYPE_CODE_CHAR
, bit
, name
);
5117 TYPE_UNSIGNED (t
) = 1;
5122 /* Allocate a TYPE_CODE_BOOL type structure associated with GDBARCH.
5123 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
5124 the type's TYPE_UNSIGNED flag. NAME is the type name. */
5127 arch_boolean_type (struct gdbarch
*gdbarch
,
5128 int bit
, int unsigned_p
, const char *name
)
5132 t
= arch_type (gdbarch
, TYPE_CODE_BOOL
, bit
, name
);
5134 TYPE_UNSIGNED (t
) = 1;
5139 /* Allocate a TYPE_CODE_FLT type structure associated with GDBARCH.
5140 BIT is the type size in bits; if BIT equals -1, the size is
5141 determined by the floatformat. NAME is the type name. Set the
5142 TYPE_FLOATFORMAT from FLOATFORMATS. */
5145 arch_float_type (struct gdbarch
*gdbarch
,
5146 int bit
, const char *name
,
5147 const struct floatformat
**floatformats
)
5149 const struct floatformat
*fmt
= floatformats
[gdbarch_byte_order (gdbarch
)];
5152 bit
= verify_floatformat (bit
, fmt
);
5153 t
= arch_type (gdbarch
, TYPE_CODE_FLT
, bit
, name
);
5154 TYPE_FLOATFORMAT (t
) = fmt
;
5159 /* Allocate a TYPE_CODE_DECFLOAT type structure associated with GDBARCH.
5160 BIT is the type size in bits. NAME is the type name. */
5163 arch_decfloat_type (struct gdbarch
*gdbarch
, int bit
, const char *name
)
5167 t
= arch_type (gdbarch
, TYPE_CODE_DECFLOAT
, bit
, name
);
5171 /* Allocate a TYPE_CODE_COMPLEX type structure associated with GDBARCH.
5172 NAME is the type name. TARGET_TYPE is the component float type. */
5175 arch_complex_type (struct gdbarch
*gdbarch
,
5176 const char *name
, struct type
*target_type
)
5180 t
= arch_type (gdbarch
, TYPE_CODE_COMPLEX
,
5181 2 * TYPE_LENGTH (target_type
) * TARGET_CHAR_BIT
, name
);
5182 TYPE_TARGET_TYPE (t
) = target_type
;
5186 /* Allocate a TYPE_CODE_PTR type structure associated with GDBARCH.
5187 BIT is the pointer type size in bits. NAME is the type name.
5188 TARGET_TYPE is the pointer target type. Always sets the pointer type's
5189 TYPE_UNSIGNED flag. */
5192 arch_pointer_type (struct gdbarch
*gdbarch
,
5193 int bit
, const char *name
, struct type
*target_type
)
5197 t
= arch_type (gdbarch
, TYPE_CODE_PTR
, bit
, name
);
5198 TYPE_TARGET_TYPE (t
) = target_type
;
5199 TYPE_UNSIGNED (t
) = 1;
5203 /* Allocate a TYPE_CODE_FLAGS type structure associated with GDBARCH.
5204 NAME is the type name. BIT is the size of the flag word in bits. */
5207 arch_flags_type (struct gdbarch
*gdbarch
, const char *name
, int bit
)
5211 type
= arch_type (gdbarch
, TYPE_CODE_FLAGS
, bit
, name
);
5212 TYPE_UNSIGNED (type
) = 1;
5213 TYPE_NFIELDS (type
) = 0;
5214 /* Pre-allocate enough space assuming every field is one bit. */
5216 = (struct field
*) TYPE_ZALLOC (type
, bit
* sizeof (struct field
));
5221 /* Add field to TYPE_CODE_FLAGS type TYPE to indicate the bit at
5222 position BITPOS is called NAME. Pass NAME as "" for fields that
5223 should not be printed. */
5226 append_flags_type_field (struct type
*type
, int start_bitpos
, int nr_bits
,
5227 struct type
*field_type
, const char *name
)
5229 int type_bitsize
= TYPE_LENGTH (type
) * TARGET_CHAR_BIT
;
5230 int field_nr
= TYPE_NFIELDS (type
);
5232 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_FLAGS
);
5233 gdb_assert (TYPE_NFIELDS (type
) + 1 <= type_bitsize
);
5234 gdb_assert (start_bitpos
>= 0 && start_bitpos
< type_bitsize
);
5235 gdb_assert (nr_bits
>= 1 && nr_bits
<= type_bitsize
);
5236 gdb_assert (name
!= NULL
);
5238 TYPE_FIELD_NAME (type
, field_nr
) = xstrdup (name
);
5239 TYPE_FIELD_TYPE (type
, field_nr
) = field_type
;
5240 SET_FIELD_BITPOS (TYPE_FIELD (type
, field_nr
), start_bitpos
);
5241 TYPE_FIELD_BITSIZE (type
, field_nr
) = nr_bits
;
5242 ++TYPE_NFIELDS (type
);
5245 /* Special version of append_flags_type_field to add a flag field.
5246 Add field to TYPE_CODE_FLAGS type TYPE to indicate the bit at
5247 position BITPOS is called NAME. */
5250 append_flags_type_flag (struct type
*type
, int bitpos
, const char *name
)
5252 struct gdbarch
*gdbarch
= get_type_arch (type
);
5254 append_flags_type_field (type
, bitpos
, 1,
5255 builtin_type (gdbarch
)->builtin_bool
,
5259 /* Allocate a TYPE_CODE_STRUCT or TYPE_CODE_UNION type structure (as
5260 specified by CODE) associated with GDBARCH. NAME is the type name. */
5263 arch_composite_type (struct gdbarch
*gdbarch
, const char *name
,
5264 enum type_code code
)
5268 gdb_assert (code
== TYPE_CODE_STRUCT
|| code
== TYPE_CODE_UNION
);
5269 t
= arch_type (gdbarch
, code
, 0, NULL
);
5270 TYPE_TAG_NAME (t
) = name
;
5271 INIT_CPLUS_SPECIFIC (t
);
5275 /* Add new field with name NAME and type FIELD to composite type T.
5276 Do not set the field's position or adjust the type's length;
5277 the caller should do so. Return the new field. */
5280 append_composite_type_field_raw (struct type
*t
, const char *name
,
5285 TYPE_NFIELDS (t
) = TYPE_NFIELDS (t
) + 1;
5286 TYPE_FIELDS (t
) = XRESIZEVEC (struct field
, TYPE_FIELDS (t
),
5288 f
= &(TYPE_FIELDS (t
)[TYPE_NFIELDS (t
) - 1]);
5289 memset (f
, 0, sizeof f
[0]);
5290 FIELD_TYPE (f
[0]) = field
;
5291 FIELD_NAME (f
[0]) = name
;
5295 /* Add new field with name NAME and type FIELD to composite type T.
5296 ALIGNMENT (if non-zero) specifies the minimum field alignment. */
5299 append_composite_type_field_aligned (struct type
*t
, const char *name
,
5300 struct type
*field
, int alignment
)
5302 struct field
*f
= append_composite_type_field_raw (t
, name
, field
);
5304 if (TYPE_CODE (t
) == TYPE_CODE_UNION
)
5306 if (TYPE_LENGTH (t
) < TYPE_LENGTH (field
))
5307 TYPE_LENGTH (t
) = TYPE_LENGTH (field
);
5309 else if (TYPE_CODE (t
) == TYPE_CODE_STRUCT
)
5311 TYPE_LENGTH (t
) = TYPE_LENGTH (t
) + TYPE_LENGTH (field
);
5312 if (TYPE_NFIELDS (t
) > 1)
5314 SET_FIELD_BITPOS (f
[0],
5315 (FIELD_BITPOS (f
[-1])
5316 + (TYPE_LENGTH (FIELD_TYPE (f
[-1]))
5317 * TARGET_CHAR_BIT
)));
5323 alignment
*= TARGET_CHAR_BIT
;
5324 left
= FIELD_BITPOS (f
[0]) % alignment
;
5328 SET_FIELD_BITPOS (f
[0], FIELD_BITPOS (f
[0]) + (alignment
- left
));
5329 TYPE_LENGTH (t
) += (alignment
- left
) / TARGET_CHAR_BIT
;
5336 /* Add new field with name NAME and type FIELD to composite type T. */
5339 append_composite_type_field (struct type
*t
, const char *name
,
5342 append_composite_type_field_aligned (t
, name
, field
, 0);
5345 static struct gdbarch_data
*gdbtypes_data
;
5347 const struct builtin_type
*
5348 builtin_type (struct gdbarch
*gdbarch
)
5350 return (const struct builtin_type
*) gdbarch_data (gdbarch
, gdbtypes_data
);
5354 gdbtypes_post_init (struct gdbarch
*gdbarch
)
5356 struct builtin_type
*builtin_type
5357 = GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct builtin_type
);
5360 builtin_type
->builtin_void
5361 = arch_type (gdbarch
, TYPE_CODE_VOID
, TARGET_CHAR_BIT
, "void");
5362 builtin_type
->builtin_char
5363 = arch_integer_type (gdbarch
, TARGET_CHAR_BIT
,
5364 !gdbarch_char_signed (gdbarch
), "char");
5365 TYPE_NOSIGN (builtin_type
->builtin_char
) = 1;
5366 builtin_type
->builtin_signed_char
5367 = arch_integer_type (gdbarch
, TARGET_CHAR_BIT
,
5369 builtin_type
->builtin_unsigned_char
5370 = arch_integer_type (gdbarch
, TARGET_CHAR_BIT
,
5371 1, "unsigned char");
5372 builtin_type
->builtin_short
5373 = arch_integer_type (gdbarch
, gdbarch_short_bit (gdbarch
),
5375 builtin_type
->builtin_unsigned_short
5376 = arch_integer_type (gdbarch
, gdbarch_short_bit (gdbarch
),
5377 1, "unsigned short");
5378 builtin_type
->builtin_int
5379 = arch_integer_type (gdbarch
, gdbarch_int_bit (gdbarch
),
5381 builtin_type
->builtin_unsigned_int
5382 = arch_integer_type (gdbarch
, gdbarch_int_bit (gdbarch
),
5384 builtin_type
->builtin_long
5385 = arch_integer_type (gdbarch
, gdbarch_long_bit (gdbarch
),
5387 builtin_type
->builtin_unsigned_long
5388 = arch_integer_type (gdbarch
, gdbarch_long_bit (gdbarch
),
5389 1, "unsigned long");
5390 builtin_type
->builtin_long_long
5391 = arch_integer_type (gdbarch
, gdbarch_long_long_bit (gdbarch
),
5393 builtin_type
->builtin_unsigned_long_long
5394 = arch_integer_type (gdbarch
, gdbarch_long_long_bit (gdbarch
),
5395 1, "unsigned long long");
5396 builtin_type
->builtin_float
5397 = arch_float_type (gdbarch
, gdbarch_float_bit (gdbarch
),
5398 "float", gdbarch_float_format (gdbarch
));
5399 builtin_type
->builtin_double
5400 = arch_float_type (gdbarch
, gdbarch_double_bit (gdbarch
),
5401 "double", gdbarch_double_format (gdbarch
));
5402 builtin_type
->builtin_long_double
5403 = arch_float_type (gdbarch
, gdbarch_long_double_bit (gdbarch
),
5404 "long double", gdbarch_long_double_format (gdbarch
));
5405 builtin_type
->builtin_complex
5406 = arch_complex_type (gdbarch
, "complex",
5407 builtin_type
->builtin_float
);
5408 builtin_type
->builtin_double_complex
5409 = arch_complex_type (gdbarch
, "double complex",
5410 builtin_type
->builtin_double
);
5411 builtin_type
->builtin_string
5412 = arch_type (gdbarch
, TYPE_CODE_STRING
, TARGET_CHAR_BIT
, "string");
5413 builtin_type
->builtin_bool
5414 = arch_type (gdbarch
, TYPE_CODE_BOOL
, TARGET_CHAR_BIT
, "bool");
5416 /* The following three are about decimal floating point types, which
5417 are 32-bits, 64-bits and 128-bits respectively. */
5418 builtin_type
->builtin_decfloat
5419 = arch_decfloat_type (gdbarch
, 32, "_Decimal32");
5420 builtin_type
->builtin_decdouble
5421 = arch_decfloat_type (gdbarch
, 64, "_Decimal64");
5422 builtin_type
->builtin_declong
5423 = arch_decfloat_type (gdbarch
, 128, "_Decimal128");
5425 /* "True" character types. */
5426 builtin_type
->builtin_true_char
5427 = arch_character_type (gdbarch
, TARGET_CHAR_BIT
, 0, "true character");
5428 builtin_type
->builtin_true_unsigned_char
5429 = arch_character_type (gdbarch
, TARGET_CHAR_BIT
, 1, "true character");
5431 /* Fixed-size integer types. */
5432 builtin_type
->builtin_int0
5433 = arch_integer_type (gdbarch
, 0, 0, "int0_t");
5434 builtin_type
->builtin_int8
5435 = arch_integer_type (gdbarch
, 8, 0, "int8_t");
5436 builtin_type
->builtin_uint8
5437 = arch_integer_type (gdbarch
, 8, 1, "uint8_t");
5438 builtin_type
->builtin_int16
5439 = arch_integer_type (gdbarch
, 16, 0, "int16_t");
5440 builtin_type
->builtin_uint16
5441 = arch_integer_type (gdbarch
, 16, 1, "uint16_t");
5442 builtin_type
->builtin_int32
5443 = arch_integer_type (gdbarch
, 32, 0, "int32_t");
5444 builtin_type
->builtin_uint32
5445 = arch_integer_type (gdbarch
, 32, 1, "uint32_t");
5446 builtin_type
->builtin_int64
5447 = arch_integer_type (gdbarch
, 64, 0, "int64_t");
5448 builtin_type
->builtin_uint64
5449 = arch_integer_type (gdbarch
, 64, 1, "uint64_t");
5450 builtin_type
->builtin_int128
5451 = arch_integer_type (gdbarch
, 128, 0, "int128_t");
5452 builtin_type
->builtin_uint128
5453 = arch_integer_type (gdbarch
, 128, 1, "uint128_t");
5454 TYPE_INSTANCE_FLAGS (builtin_type
->builtin_int8
) |=
5455 TYPE_INSTANCE_FLAG_NOTTEXT
;
5456 TYPE_INSTANCE_FLAGS (builtin_type
->builtin_uint8
) |=
5457 TYPE_INSTANCE_FLAG_NOTTEXT
;
5459 /* Wide character types. */
5460 builtin_type
->builtin_char16
5461 = arch_integer_type (gdbarch
, 16, 1, "char16_t");
5462 builtin_type
->builtin_char32
5463 = arch_integer_type (gdbarch
, 32, 1, "char32_t");
5464 builtin_type
->builtin_wchar
5465 = arch_integer_type (gdbarch
, gdbarch_wchar_bit (gdbarch
),
5466 !gdbarch_wchar_signed (gdbarch
), "wchar_t");
5468 /* Default data/code pointer types. */
5469 builtin_type
->builtin_data_ptr
5470 = lookup_pointer_type (builtin_type
->builtin_void
);
5471 builtin_type
->builtin_func_ptr
5472 = lookup_pointer_type (lookup_function_type (builtin_type
->builtin_void
));
5473 builtin_type
->builtin_func_func
5474 = lookup_function_type (builtin_type
->builtin_func_ptr
);
5476 /* This type represents a GDB internal function. */
5477 builtin_type
->internal_fn
5478 = arch_type (gdbarch
, TYPE_CODE_INTERNAL_FUNCTION
, 0,
5479 "<internal function>");
5481 /* This type represents an xmethod. */
5482 builtin_type
->xmethod
5483 = arch_type (gdbarch
, TYPE_CODE_XMETHOD
, 0, "<xmethod>");
5485 return builtin_type
;
5488 /* This set of objfile-based types is intended to be used by symbol
5489 readers as basic types. */
5491 static const struct objfile_data
*objfile_type_data
;
5493 const struct objfile_type
*
5494 objfile_type (struct objfile
*objfile
)
5496 struct gdbarch
*gdbarch
;
5497 struct objfile_type
*objfile_type
5498 = (struct objfile_type
*) objfile_data (objfile
, objfile_type_data
);
5501 return objfile_type
;
5503 objfile_type
= OBSTACK_CALLOC (&objfile
->objfile_obstack
,
5504 1, struct objfile_type
);
5506 /* Use the objfile architecture to determine basic type properties. */
5507 gdbarch
= get_objfile_arch (objfile
);
5510 objfile_type
->builtin_void
5511 = init_type (objfile
, TYPE_CODE_VOID
, TARGET_CHAR_BIT
, "void");
5512 objfile_type
->builtin_char
5513 = init_integer_type (objfile
, TARGET_CHAR_BIT
,
5514 !gdbarch_char_signed (gdbarch
), "char");
5515 TYPE_NOSIGN (objfile_type
->builtin_char
) = 1;
5516 objfile_type
->builtin_signed_char
5517 = init_integer_type (objfile
, TARGET_CHAR_BIT
,
5519 objfile_type
->builtin_unsigned_char
5520 = init_integer_type (objfile
, TARGET_CHAR_BIT
,
5521 1, "unsigned char");
5522 objfile_type
->builtin_short
5523 = init_integer_type (objfile
, gdbarch_short_bit (gdbarch
),
5525 objfile_type
->builtin_unsigned_short
5526 = init_integer_type (objfile
, gdbarch_short_bit (gdbarch
),
5527 1, "unsigned short");
5528 objfile_type
->builtin_int
5529 = init_integer_type (objfile
, gdbarch_int_bit (gdbarch
),
5531 objfile_type
->builtin_unsigned_int
5532 = init_integer_type (objfile
, gdbarch_int_bit (gdbarch
),
5534 objfile_type
->builtin_long
5535 = init_integer_type (objfile
, gdbarch_long_bit (gdbarch
),
5537 objfile_type
->builtin_unsigned_long
5538 = init_integer_type (objfile
, gdbarch_long_bit (gdbarch
),
5539 1, "unsigned long");
5540 objfile_type
->builtin_long_long
5541 = init_integer_type (objfile
, gdbarch_long_long_bit (gdbarch
),
5543 objfile_type
->builtin_unsigned_long_long
5544 = init_integer_type (objfile
, gdbarch_long_long_bit (gdbarch
),
5545 1, "unsigned long long");
5546 objfile_type
->builtin_float
5547 = init_float_type (objfile
, gdbarch_float_bit (gdbarch
),
5548 "float", gdbarch_float_format (gdbarch
));
5549 objfile_type
->builtin_double
5550 = init_float_type (objfile
, gdbarch_double_bit (gdbarch
),
5551 "double", gdbarch_double_format (gdbarch
));
5552 objfile_type
->builtin_long_double
5553 = init_float_type (objfile
, gdbarch_long_double_bit (gdbarch
),
5554 "long double", gdbarch_long_double_format (gdbarch
));
5556 /* This type represents a type that was unrecognized in symbol read-in. */
5557 objfile_type
->builtin_error
5558 = init_type (objfile
, TYPE_CODE_ERROR
, 0, "<unknown type>");
5560 /* The following set of types is used for symbols with no
5561 debug information. */
5562 objfile_type
->nodebug_text_symbol
5563 = init_type (objfile
, TYPE_CODE_FUNC
, TARGET_CHAR_BIT
,
5564 "<text variable, no debug info>");
5565 objfile_type
->nodebug_text_gnu_ifunc_symbol
5566 = init_type (objfile
, TYPE_CODE_FUNC
, TARGET_CHAR_BIT
,
5567 "<text gnu-indirect-function variable, no debug info>");
5568 TYPE_GNU_IFUNC (objfile_type
->nodebug_text_gnu_ifunc_symbol
) = 1;
5569 objfile_type
->nodebug_got_plt_symbol
5570 = init_pointer_type (objfile
, gdbarch_addr_bit (gdbarch
),
5571 "<text from jump slot in .got.plt, no debug info>",
5572 objfile_type
->nodebug_text_symbol
);
5573 objfile_type
->nodebug_data_symbol
5574 = init_nodebug_var_type (objfile
, "<data variable, no debug info>");
5575 objfile_type
->nodebug_unknown_symbol
5576 = init_nodebug_var_type (objfile
, "<variable (not text or data), no debug info>");
5577 objfile_type
->nodebug_tls_symbol
5578 = init_nodebug_var_type (objfile
, "<thread local variable, no debug info>");
5580 /* NOTE: on some targets, addresses and pointers are not necessarily
5584 - gdb's `struct type' always describes the target's
5586 - gdb's `struct value' objects should always hold values in
5588 - gdb's CORE_ADDR values are addresses in the unified virtual
5589 address space that the assembler and linker work with. Thus,
5590 since target_read_memory takes a CORE_ADDR as an argument, it
5591 can access any memory on the target, even if the processor has
5592 separate code and data address spaces.
5594 In this context, objfile_type->builtin_core_addr is a bit odd:
5595 it's a target type for a value the target will never see. It's
5596 only used to hold the values of (typeless) linker symbols, which
5597 are indeed in the unified virtual address space. */
5599 objfile_type
->builtin_core_addr
5600 = init_integer_type (objfile
, gdbarch_addr_bit (gdbarch
), 1,
5603 set_objfile_data (objfile
, objfile_type_data
, objfile_type
);
5604 return objfile_type
;
5608 _initialize_gdbtypes (void)
5610 gdbtypes_data
= gdbarch_data_register_post_init (gdbtypes_post_init
);
5611 objfile_type_data
= register_objfile_data ();
5613 add_setshow_zuinteger_cmd ("overload", no_class
, &overload_debug
,
5614 _("Set debugging of C++ overloading."),
5615 _("Show debugging of C++ overloading."),
5616 _("When enabled, ranking of the "
5617 "functions is displayed."),
5619 show_overload_debug
,
5620 &setdebuglist
, &showdebuglist
);
5622 /* Add user knob for controlling resolution of opaque types. */
5623 add_setshow_boolean_cmd ("opaque-type-resolution", class_support
,
5624 &opaque_type_resolution
,
5625 _("Set resolution of opaque struct/class/union"
5626 " types (if set before loading symbols)."),
5627 _("Show resolution of opaque struct/class/union"
5628 " types (if set before loading symbols)."),
5630 show_opaque_type_resolution
,
5631 &setlist
, &showlist
);
5633 /* Add an option to permit non-strict type checking. */
5634 add_setshow_boolean_cmd ("type", class_support
,
5635 &strict_type_checking
,
5636 _("Set strict type checking."),
5637 _("Show strict type checking."),
5639 show_strict_type_checking
,
5640 &setchecklist
, &showchecklist
);