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 gdbarch
*gdbarch
= get_type_arch (element_type
);
1235 struct type
*index_type
= builtin_type (gdbarch
)->builtin_int
;
1236 struct type
*range_type
1237 = create_static_range_type (NULL
, index_type
, low_bound
, high_bound
);
1239 return create_array_type (NULL
, element_type
, range_type
);
1242 /* Create a string type using either a blank type supplied in
1243 RESULT_TYPE, or creating a new type. String types are similar
1244 enough to array of char types that we can use create_array_type to
1245 build the basic type and then bash it into a string type.
1247 For fixed length strings, the range type contains 0 as the lower
1248 bound and the length of the string minus one as the upper bound.
1250 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
1251 sure it is TYPE_CODE_UNDEF before we bash it into a string
1255 create_string_type (struct type
*result_type
,
1256 struct type
*string_char_type
,
1257 struct type
*range_type
)
1259 result_type
= create_array_type (result_type
,
1262 TYPE_CODE (result_type
) = TYPE_CODE_STRING
;
1267 lookup_string_range_type (struct type
*string_char_type
,
1268 LONGEST low_bound
, LONGEST high_bound
)
1270 struct type
*result_type
;
1272 result_type
= lookup_array_range_type (string_char_type
,
1273 low_bound
, high_bound
);
1274 TYPE_CODE (result_type
) = TYPE_CODE_STRING
;
1279 create_set_type (struct type
*result_type
, struct type
*domain_type
)
1281 if (result_type
== NULL
)
1282 result_type
= alloc_type_copy (domain_type
);
1284 TYPE_CODE (result_type
) = TYPE_CODE_SET
;
1285 TYPE_NFIELDS (result_type
) = 1;
1286 TYPE_FIELDS (result_type
)
1287 = (struct field
*) TYPE_ZALLOC (result_type
, sizeof (struct field
));
1289 if (!TYPE_STUB (domain_type
))
1291 LONGEST low_bound
, high_bound
, bit_length
;
1293 if (get_discrete_bounds (domain_type
, &low_bound
, &high_bound
) < 0)
1294 low_bound
= high_bound
= 0;
1295 bit_length
= high_bound
- low_bound
+ 1;
1296 TYPE_LENGTH (result_type
)
1297 = (bit_length
+ TARGET_CHAR_BIT
- 1) / TARGET_CHAR_BIT
;
1299 TYPE_UNSIGNED (result_type
) = 1;
1301 TYPE_FIELD_TYPE (result_type
, 0) = domain_type
;
1306 /* Convert ARRAY_TYPE to a vector type. This may modify ARRAY_TYPE
1307 and any array types nested inside it. */
1310 make_vector_type (struct type
*array_type
)
1312 struct type
*inner_array
, *elt_type
;
1315 /* Find the innermost array type, in case the array is
1316 multi-dimensional. */
1317 inner_array
= array_type
;
1318 while (TYPE_CODE (TYPE_TARGET_TYPE (inner_array
)) == TYPE_CODE_ARRAY
)
1319 inner_array
= TYPE_TARGET_TYPE (inner_array
);
1321 elt_type
= TYPE_TARGET_TYPE (inner_array
);
1322 if (TYPE_CODE (elt_type
) == TYPE_CODE_INT
)
1324 flags
= TYPE_INSTANCE_FLAGS (elt_type
) | TYPE_INSTANCE_FLAG_NOTTEXT
;
1325 elt_type
= make_qualified_type (elt_type
, flags
, NULL
);
1326 TYPE_TARGET_TYPE (inner_array
) = elt_type
;
1329 TYPE_VECTOR (array_type
) = 1;
1333 init_vector_type (struct type
*elt_type
, int n
)
1335 struct type
*array_type
;
1337 array_type
= lookup_array_range_type (elt_type
, 0, n
- 1);
1338 make_vector_type (array_type
);
1342 /* Internal routine called by TYPE_SELF_TYPE to return the type that TYPE
1343 belongs to. In c++ this is the class of "this", but TYPE_THIS_TYPE is too
1344 confusing. "self" is a common enough replacement for "this".
1345 TYPE must be one of TYPE_CODE_METHODPTR, TYPE_CODE_MEMBERPTR, or
1346 TYPE_CODE_METHOD. */
1349 internal_type_self_type (struct type
*type
)
1351 switch (TYPE_CODE (type
))
1353 case TYPE_CODE_METHODPTR
:
1354 case TYPE_CODE_MEMBERPTR
:
1355 if (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_NONE
)
1357 gdb_assert (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_SELF_TYPE
);
1358 return TYPE_MAIN_TYPE (type
)->type_specific
.self_type
;
1359 case TYPE_CODE_METHOD
:
1360 if (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_NONE
)
1362 gdb_assert (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_FUNC
);
1363 return TYPE_MAIN_TYPE (type
)->type_specific
.func_stuff
->self_type
;
1365 gdb_assert_not_reached ("bad type");
1369 /* Set the type of the class that TYPE belongs to.
1370 In c++ this is the class of "this".
1371 TYPE must be one of TYPE_CODE_METHODPTR, TYPE_CODE_MEMBERPTR, or
1372 TYPE_CODE_METHOD. */
1375 set_type_self_type (struct type
*type
, struct type
*self_type
)
1377 switch (TYPE_CODE (type
))
1379 case TYPE_CODE_METHODPTR
:
1380 case TYPE_CODE_MEMBERPTR
:
1381 if (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_NONE
)
1382 TYPE_SPECIFIC_FIELD (type
) = TYPE_SPECIFIC_SELF_TYPE
;
1383 gdb_assert (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_SELF_TYPE
);
1384 TYPE_MAIN_TYPE (type
)->type_specific
.self_type
= self_type
;
1386 case TYPE_CODE_METHOD
:
1387 if (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_NONE
)
1388 INIT_FUNC_SPECIFIC (type
);
1389 gdb_assert (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_FUNC
);
1390 TYPE_MAIN_TYPE (type
)->type_specific
.func_stuff
->self_type
= self_type
;
1393 gdb_assert_not_reached ("bad type");
1397 /* Smash TYPE to be a type of pointers to members of SELF_TYPE with type
1398 TO_TYPE. A member pointer is a wierd thing -- it amounts to a
1399 typed offset into a struct, e.g. "an int at offset 8". A MEMBER
1400 TYPE doesn't include the offset (that's the value of the MEMBER
1401 itself), but does include the structure type into which it points
1404 When "smashing" the type, we preserve the objfile that the old type
1405 pointed to, since we aren't changing where the type is actually
1409 smash_to_memberptr_type (struct type
*type
, struct type
*self_type
,
1410 struct type
*to_type
)
1413 TYPE_CODE (type
) = TYPE_CODE_MEMBERPTR
;
1414 TYPE_TARGET_TYPE (type
) = to_type
;
1415 set_type_self_type (type
, self_type
);
1416 /* Assume that a data member pointer is the same size as a normal
1419 = gdbarch_ptr_bit (get_type_arch (to_type
)) / TARGET_CHAR_BIT
;
1422 /* Smash TYPE to be a type of pointer to methods type TO_TYPE.
1424 When "smashing" the type, we preserve the objfile that the old type
1425 pointed to, since we aren't changing where the type is actually
1429 smash_to_methodptr_type (struct type
*type
, struct type
*to_type
)
1432 TYPE_CODE (type
) = TYPE_CODE_METHODPTR
;
1433 TYPE_TARGET_TYPE (type
) = to_type
;
1434 set_type_self_type (type
, TYPE_SELF_TYPE (to_type
));
1435 TYPE_LENGTH (type
) = cplus_method_ptr_size (to_type
);
1438 /* Smash TYPE to be a type of method of SELF_TYPE with type TO_TYPE.
1439 METHOD just means `function that gets an extra "this" argument'.
1441 When "smashing" the type, we preserve the objfile that the old type
1442 pointed to, since we aren't changing where the type is actually
1446 smash_to_method_type (struct type
*type
, struct type
*self_type
,
1447 struct type
*to_type
, struct field
*args
,
1448 int nargs
, int varargs
)
1451 TYPE_CODE (type
) = TYPE_CODE_METHOD
;
1452 TYPE_TARGET_TYPE (type
) = to_type
;
1453 set_type_self_type (type
, self_type
);
1454 TYPE_FIELDS (type
) = args
;
1455 TYPE_NFIELDS (type
) = nargs
;
1457 TYPE_VARARGS (type
) = 1;
1458 TYPE_LENGTH (type
) = 1; /* In practice, this is never needed. */
1461 /* Return a typename for a struct/union/enum type without "struct ",
1462 "union ", or "enum ". If the type has a NULL name, return NULL. */
1465 type_name_no_tag (const struct type
*type
)
1467 if (TYPE_TAG_NAME (type
) != NULL
)
1468 return TYPE_TAG_NAME (type
);
1470 /* Is there code which expects this to return the name if there is
1471 no tag name? My guess is that this is mainly used for C++ in
1472 cases where the two will always be the same. */
1473 return TYPE_NAME (type
);
1476 /* A wrapper of type_name_no_tag which calls error if the type is anonymous.
1477 Since GCC PR debug/47510 DWARF provides associated information to detect the
1478 anonymous class linkage name from its typedef.
1480 Parameter TYPE should not yet have CHECK_TYPEDEF applied, this function will
1484 type_name_no_tag_or_error (struct type
*type
)
1486 struct type
*saved_type
= type
;
1488 struct objfile
*objfile
;
1490 type
= check_typedef (type
);
1492 name
= type_name_no_tag (type
);
1496 name
= type_name_no_tag (saved_type
);
1497 objfile
= TYPE_OBJFILE (saved_type
);
1498 error (_("Invalid anonymous type %s [in module %s], GCC PR debug/47510 bug?"),
1499 name
? name
: "<anonymous>",
1500 objfile
? objfile_name (objfile
) : "<arch>");
1503 /* Lookup a typedef or primitive type named NAME, visible in lexical
1504 block BLOCK. If NOERR is nonzero, return zero if NAME is not
1505 suitably defined. */
1508 lookup_typename (const struct language_defn
*language
,
1509 struct gdbarch
*gdbarch
, const char *name
,
1510 const struct block
*block
, int noerr
)
1514 sym
= lookup_symbol_in_language (name
, block
, VAR_DOMAIN
,
1515 language
->la_language
, NULL
).symbol
;
1516 if (sym
!= NULL
&& SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
1517 return SYMBOL_TYPE (sym
);
1521 error (_("No type named %s."), name
);
1525 lookup_unsigned_typename (const struct language_defn
*language
,
1526 struct gdbarch
*gdbarch
, const char *name
)
1528 char *uns
= (char *) alloca (strlen (name
) + 10);
1530 strcpy (uns
, "unsigned ");
1531 strcpy (uns
+ 9, name
);
1532 return lookup_typename (language
, gdbarch
, uns
, (struct block
*) NULL
, 0);
1536 lookup_signed_typename (const struct language_defn
*language
,
1537 struct gdbarch
*gdbarch
, const char *name
)
1540 char *uns
= (char *) alloca (strlen (name
) + 8);
1542 strcpy (uns
, "signed ");
1543 strcpy (uns
+ 7, name
);
1544 t
= lookup_typename (language
, gdbarch
, uns
, (struct block
*) NULL
, 1);
1545 /* If we don't find "signed FOO" just try again with plain "FOO". */
1548 return lookup_typename (language
, gdbarch
, name
, (struct block
*) NULL
, 0);
1551 /* Lookup a structure type named "struct NAME",
1552 visible in lexical block BLOCK. */
1555 lookup_struct (const char *name
, const struct block
*block
)
1559 sym
= lookup_symbol (name
, block
, STRUCT_DOMAIN
, 0).symbol
;
1563 error (_("No struct type named %s."), name
);
1565 if (TYPE_CODE (SYMBOL_TYPE (sym
)) != TYPE_CODE_STRUCT
)
1567 error (_("This context has class, union or enum %s, not a struct."),
1570 return (SYMBOL_TYPE (sym
));
1573 /* Lookup a union type named "union NAME",
1574 visible in lexical block BLOCK. */
1577 lookup_union (const char *name
, const struct block
*block
)
1582 sym
= lookup_symbol (name
, block
, STRUCT_DOMAIN
, 0).symbol
;
1585 error (_("No union type named %s."), name
);
1587 t
= SYMBOL_TYPE (sym
);
1589 if (TYPE_CODE (t
) == TYPE_CODE_UNION
)
1592 /* If we get here, it's not a union. */
1593 error (_("This context has class, struct or enum %s, not a union."),
1597 /* Lookup an enum type named "enum NAME",
1598 visible in lexical block BLOCK. */
1601 lookup_enum (const char *name
, const struct block
*block
)
1605 sym
= lookup_symbol (name
, block
, STRUCT_DOMAIN
, 0).symbol
;
1608 error (_("No enum type named %s."), name
);
1610 if (TYPE_CODE (SYMBOL_TYPE (sym
)) != TYPE_CODE_ENUM
)
1612 error (_("This context has class, struct or union %s, not an enum."),
1615 return (SYMBOL_TYPE (sym
));
1618 /* Lookup a template type named "template NAME<TYPE>",
1619 visible in lexical block BLOCK. */
1622 lookup_template_type (char *name
, struct type
*type
,
1623 const struct block
*block
)
1626 char *nam
= (char *)
1627 alloca (strlen (name
) + strlen (TYPE_NAME (type
)) + 4);
1631 strcat (nam
, TYPE_NAME (type
));
1632 strcat (nam
, " >"); /* FIXME, extra space still introduced in gcc? */
1634 sym
= lookup_symbol (nam
, block
, VAR_DOMAIN
, 0).symbol
;
1638 error (_("No template type named %s."), name
);
1640 if (TYPE_CODE (SYMBOL_TYPE (sym
)) != TYPE_CODE_STRUCT
)
1642 error (_("This context has class, union or enum %s, not a struct."),
1645 return (SYMBOL_TYPE (sym
));
1648 /* Given a type TYPE, lookup the type of the component of type named
1651 TYPE can be either a struct or union, or a pointer or reference to
1652 a struct or union. If it is a pointer or reference, its target
1653 type is automatically used. Thus '.' and '->' are interchangable,
1654 as specified for the definitions of the expression element types
1655 STRUCTOP_STRUCT and STRUCTOP_PTR.
1657 If NOERR is nonzero, return zero if NAME is not suitably defined.
1658 If NAME is the name of a baseclass type, return that type. */
1661 lookup_struct_elt_type (struct type
*type
, const char *name
, int noerr
)
1667 type
= check_typedef (type
);
1668 if (TYPE_CODE (type
) != TYPE_CODE_PTR
1669 && TYPE_CODE (type
) != TYPE_CODE_REF
)
1671 type
= TYPE_TARGET_TYPE (type
);
1674 if (TYPE_CODE (type
) != TYPE_CODE_STRUCT
1675 && TYPE_CODE (type
) != TYPE_CODE_UNION
)
1677 std::string type_name
= type_to_string (type
);
1678 error (_("Type %s is not a structure or union type."),
1679 type_name
.c_str ());
1683 /* FIXME: This change put in by Michael seems incorrect for the case
1684 where the structure tag name is the same as the member name.
1685 I.e. when doing "ptype bell->bar" for "struct foo { int bar; int
1686 foo; } bell;" Disabled by fnf. */
1690 type_name
= type_name_no_tag (type
);
1691 if (type_name
!= NULL
&& strcmp (type_name
, name
) == 0)
1696 for (i
= TYPE_NFIELDS (type
) - 1; i
>= TYPE_N_BASECLASSES (type
); i
--)
1698 const char *t_field_name
= TYPE_FIELD_NAME (type
, i
);
1700 if (t_field_name
&& (strcmp_iw (t_field_name
, name
) == 0))
1702 return TYPE_FIELD_TYPE (type
, i
);
1704 else if (!t_field_name
|| *t_field_name
== '\0')
1706 struct type
*subtype
1707 = lookup_struct_elt_type (TYPE_FIELD_TYPE (type
, i
), name
, 1);
1709 if (subtype
!= NULL
)
1714 /* OK, it's not in this class. Recursively check the baseclasses. */
1715 for (i
= TYPE_N_BASECLASSES (type
) - 1; i
>= 0; i
--)
1719 t
= lookup_struct_elt_type (TYPE_BASECLASS (type
, i
), name
, 1);
1731 std::string type_name
= type_to_string (type
);
1732 error (_("Type %s has no component named %s."), type_name
.c_str (), name
);
1735 /* Store in *MAX the largest number representable by unsigned integer type
1739 get_unsigned_type_max (struct type
*type
, ULONGEST
*max
)
1743 type
= check_typedef (type
);
1744 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_INT
&& TYPE_UNSIGNED (type
));
1745 gdb_assert (TYPE_LENGTH (type
) <= sizeof (ULONGEST
));
1747 /* Written this way to avoid overflow. */
1748 n
= TYPE_LENGTH (type
) * TARGET_CHAR_BIT
;
1749 *max
= ((((ULONGEST
) 1 << (n
- 1)) - 1) << 1) | 1;
1752 /* Store in *MIN, *MAX the smallest and largest numbers representable by
1753 signed integer type TYPE. */
1756 get_signed_type_minmax (struct type
*type
, LONGEST
*min
, LONGEST
*max
)
1760 type
= check_typedef (type
);
1761 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_INT
&& !TYPE_UNSIGNED (type
));
1762 gdb_assert (TYPE_LENGTH (type
) <= sizeof (LONGEST
));
1764 n
= TYPE_LENGTH (type
) * TARGET_CHAR_BIT
;
1765 *min
= -((ULONGEST
) 1 << (n
- 1));
1766 *max
= ((ULONGEST
) 1 << (n
- 1)) - 1;
1769 /* Internal routine called by TYPE_VPTR_FIELDNO to return the value of
1770 cplus_stuff.vptr_fieldno.
1772 cplus_stuff is initialized to cplus_struct_default which does not
1773 set vptr_fieldno to -1 for portability reasons (IWBN to use C99
1774 designated initializers). We cope with that here. */
1777 internal_type_vptr_fieldno (struct type
*type
)
1779 type
= check_typedef (type
);
1780 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_STRUCT
1781 || TYPE_CODE (type
) == TYPE_CODE_UNION
);
1782 if (!HAVE_CPLUS_STRUCT (type
))
1784 return TYPE_RAW_CPLUS_SPECIFIC (type
)->vptr_fieldno
;
1787 /* Set the value of cplus_stuff.vptr_fieldno. */
1790 set_type_vptr_fieldno (struct type
*type
, int fieldno
)
1792 type
= check_typedef (type
);
1793 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_STRUCT
1794 || TYPE_CODE (type
) == TYPE_CODE_UNION
);
1795 if (!HAVE_CPLUS_STRUCT (type
))
1796 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
1797 TYPE_RAW_CPLUS_SPECIFIC (type
)->vptr_fieldno
= fieldno
;
1800 /* Internal routine called by TYPE_VPTR_BASETYPE to return the value of
1801 cplus_stuff.vptr_basetype. */
1804 internal_type_vptr_basetype (struct type
*type
)
1806 type
= check_typedef (type
);
1807 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_STRUCT
1808 || TYPE_CODE (type
) == TYPE_CODE_UNION
);
1809 gdb_assert (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_CPLUS_STUFF
);
1810 return TYPE_RAW_CPLUS_SPECIFIC (type
)->vptr_basetype
;
1813 /* Set the value of cplus_stuff.vptr_basetype. */
1816 set_type_vptr_basetype (struct type
*type
, struct type
*basetype
)
1818 type
= check_typedef (type
);
1819 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_STRUCT
1820 || TYPE_CODE (type
) == TYPE_CODE_UNION
);
1821 if (!HAVE_CPLUS_STRUCT (type
))
1822 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
1823 TYPE_RAW_CPLUS_SPECIFIC (type
)->vptr_basetype
= basetype
;
1826 /* Lookup the vptr basetype/fieldno values for TYPE.
1827 If found store vptr_basetype in *BASETYPEP if non-NULL, and return
1828 vptr_fieldno. Also, if found and basetype is from the same objfile,
1830 If not found, return -1 and ignore BASETYPEP.
1831 Callers should be aware that in some cases (for example,
1832 the type or one of its baseclasses is a stub type and we are
1833 debugging a .o file, or the compiler uses DWARF-2 and is not GCC),
1834 this function will not be able to find the
1835 virtual function table pointer, and vptr_fieldno will remain -1 and
1836 vptr_basetype will remain NULL or incomplete. */
1839 get_vptr_fieldno (struct type
*type
, struct type
**basetypep
)
1841 type
= check_typedef (type
);
1843 if (TYPE_VPTR_FIELDNO (type
) < 0)
1847 /* We must start at zero in case the first (and only) baseclass
1848 is virtual (and hence we cannot share the table pointer). */
1849 for (i
= 0; i
< TYPE_N_BASECLASSES (type
); i
++)
1851 struct type
*baseclass
= check_typedef (TYPE_BASECLASS (type
, i
));
1853 struct type
*basetype
;
1855 fieldno
= get_vptr_fieldno (baseclass
, &basetype
);
1858 /* If the type comes from a different objfile we can't cache
1859 it, it may have a different lifetime. PR 2384 */
1860 if (TYPE_OBJFILE (type
) == TYPE_OBJFILE (basetype
))
1862 set_type_vptr_fieldno (type
, fieldno
);
1863 set_type_vptr_basetype (type
, basetype
);
1866 *basetypep
= basetype
;
1877 *basetypep
= TYPE_VPTR_BASETYPE (type
);
1878 return TYPE_VPTR_FIELDNO (type
);
1883 stub_noname_complaint (void)
1885 complaint (&symfile_complaints
, _("stub type has NULL name"));
1888 /* Return nonzero if TYPE has a DYN_PROP_BYTE_STRIDE dynamic property
1889 attached to it, and that property has a non-constant value. */
1892 array_type_has_dynamic_stride (struct type
*type
)
1894 struct dynamic_prop
*prop
= get_dyn_prop (DYN_PROP_BYTE_STRIDE
, type
);
1896 return (prop
!= NULL
&& prop
->kind
!= PROP_CONST
);
1899 /* Worker for is_dynamic_type. */
1902 is_dynamic_type_internal (struct type
*type
, int top_level
)
1904 type
= check_typedef (type
);
1906 /* We only want to recognize references at the outermost level. */
1907 if (top_level
&& TYPE_CODE (type
) == TYPE_CODE_REF
)
1908 type
= check_typedef (TYPE_TARGET_TYPE (type
));
1910 /* Types that have a dynamic TYPE_DATA_LOCATION are considered
1911 dynamic, even if the type itself is statically defined.
1912 From a user's point of view, this may appear counter-intuitive;
1913 but it makes sense in this context, because the point is to determine
1914 whether any part of the type needs to be resolved before it can
1916 if (TYPE_DATA_LOCATION (type
) != NULL
1917 && (TYPE_DATA_LOCATION_KIND (type
) == PROP_LOCEXPR
1918 || TYPE_DATA_LOCATION_KIND (type
) == PROP_LOCLIST
))
1921 if (TYPE_ASSOCIATED_PROP (type
))
1924 if (TYPE_ALLOCATED_PROP (type
))
1927 switch (TYPE_CODE (type
))
1929 case TYPE_CODE_RANGE
:
1931 /* A range type is obviously dynamic if it has at least one
1932 dynamic bound. But also consider the range type to be
1933 dynamic when its subtype is dynamic, even if the bounds
1934 of the range type are static. It allows us to assume that
1935 the subtype of a static range type is also static. */
1936 return (!has_static_range (TYPE_RANGE_DATA (type
))
1937 || is_dynamic_type_internal (TYPE_TARGET_TYPE (type
), 0));
1940 case TYPE_CODE_ARRAY
:
1942 gdb_assert (TYPE_NFIELDS (type
) == 1);
1944 /* The array is dynamic if either the bounds are dynamic... */
1945 if (is_dynamic_type_internal (TYPE_INDEX_TYPE (type
), 0))
1947 /* ... or the elements it contains have a dynamic contents... */
1948 if (is_dynamic_type_internal (TYPE_TARGET_TYPE (type
), 0))
1950 /* ... or if it has a dynamic stride... */
1951 if (array_type_has_dynamic_stride (type
))
1956 case TYPE_CODE_STRUCT
:
1957 case TYPE_CODE_UNION
:
1961 for (i
= 0; i
< TYPE_NFIELDS (type
); ++i
)
1962 if (!field_is_static (&TYPE_FIELD (type
, i
))
1963 && is_dynamic_type_internal (TYPE_FIELD_TYPE (type
, i
), 0))
1972 /* See gdbtypes.h. */
1975 is_dynamic_type (struct type
*type
)
1977 return is_dynamic_type_internal (type
, 1);
1980 static struct type
*resolve_dynamic_type_internal
1981 (struct type
*type
, struct property_addr_info
*addr_stack
, int top_level
);
1983 /* Given a dynamic range type (dyn_range_type) and a stack of
1984 struct property_addr_info elements, return a static version
1987 static struct type
*
1988 resolve_dynamic_range (struct type
*dyn_range_type
,
1989 struct property_addr_info
*addr_stack
)
1992 struct type
*static_range_type
, *static_target_type
;
1993 const struct dynamic_prop
*prop
;
1994 struct dynamic_prop low_bound
, high_bound
;
1996 gdb_assert (TYPE_CODE (dyn_range_type
) == TYPE_CODE_RANGE
);
1998 prop
= &TYPE_RANGE_DATA (dyn_range_type
)->low
;
1999 if (dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2001 low_bound
.kind
= PROP_CONST
;
2002 low_bound
.data
.const_val
= value
;
2006 low_bound
.kind
= PROP_UNDEFINED
;
2007 low_bound
.data
.const_val
= 0;
2010 prop
= &TYPE_RANGE_DATA (dyn_range_type
)->high
;
2011 if (dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2013 high_bound
.kind
= PROP_CONST
;
2014 high_bound
.data
.const_val
= value
;
2016 if (TYPE_RANGE_DATA (dyn_range_type
)->flag_upper_bound_is_count
)
2017 high_bound
.data
.const_val
2018 = low_bound
.data
.const_val
+ high_bound
.data
.const_val
- 1;
2022 high_bound
.kind
= PROP_UNDEFINED
;
2023 high_bound
.data
.const_val
= 0;
2027 = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (dyn_range_type
),
2029 static_range_type
= create_range_type (copy_type (dyn_range_type
),
2031 &low_bound
, &high_bound
);
2032 TYPE_RANGE_DATA (static_range_type
)->flag_bound_evaluated
= 1;
2033 return static_range_type
;
2036 /* Resolves dynamic bound values of an array type TYPE to static ones.
2037 ADDR_STACK is a stack of struct property_addr_info to be used
2038 if needed during the dynamic resolution. */
2040 static struct type
*
2041 resolve_dynamic_array (struct type
*type
,
2042 struct property_addr_info
*addr_stack
)
2045 struct type
*elt_type
;
2046 struct type
*range_type
;
2047 struct type
*ary_dim
;
2048 struct dynamic_prop
*prop
;
2049 unsigned int bit_stride
= 0;
2051 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_ARRAY
);
2053 type
= copy_type (type
);
2056 range_type
= check_typedef (TYPE_INDEX_TYPE (elt_type
));
2057 range_type
= resolve_dynamic_range (range_type
, addr_stack
);
2059 /* Resolve allocated/associated here before creating a new array type, which
2060 will update the length of the array accordingly. */
2061 prop
= TYPE_ALLOCATED_PROP (type
);
2062 if (prop
!= NULL
&& dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2064 TYPE_DYN_PROP_ADDR (prop
) = value
;
2065 TYPE_DYN_PROP_KIND (prop
) = PROP_CONST
;
2067 prop
= TYPE_ASSOCIATED_PROP (type
);
2068 if (prop
!= NULL
&& dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2070 TYPE_DYN_PROP_ADDR (prop
) = value
;
2071 TYPE_DYN_PROP_KIND (prop
) = PROP_CONST
;
2074 ary_dim
= check_typedef (TYPE_TARGET_TYPE (elt_type
));
2076 if (ary_dim
!= NULL
&& TYPE_CODE (ary_dim
) == TYPE_CODE_ARRAY
)
2077 elt_type
= resolve_dynamic_array (ary_dim
, addr_stack
);
2079 elt_type
= TYPE_TARGET_TYPE (type
);
2081 prop
= get_dyn_prop (DYN_PROP_BYTE_STRIDE
, type
);
2085 = dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
);
2089 remove_dyn_prop (DYN_PROP_BYTE_STRIDE
, type
);
2090 bit_stride
= (unsigned int) (value
* 8);
2094 /* Could be a bug in our code, but it could also happen
2095 if the DWARF info is not correct. Issue a warning,
2096 and assume no byte/bit stride (leave bit_stride = 0). */
2097 warning (_("cannot determine array stride for type %s"),
2098 TYPE_NAME (type
) ? TYPE_NAME (type
) : "<no name>");
2102 bit_stride
= TYPE_FIELD_BITSIZE (type
, 0);
2104 return create_array_type_with_stride (type
, elt_type
, range_type
, NULL
,
2108 /* Resolve dynamic bounds of members of the union TYPE to static
2109 bounds. ADDR_STACK is a stack of struct property_addr_info
2110 to be used if needed during the dynamic resolution. */
2112 static struct type
*
2113 resolve_dynamic_union (struct type
*type
,
2114 struct property_addr_info
*addr_stack
)
2116 struct type
*resolved_type
;
2118 unsigned int max_len
= 0;
2120 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_UNION
);
2122 resolved_type
= copy_type (type
);
2123 TYPE_FIELDS (resolved_type
)
2124 = (struct field
*) TYPE_ALLOC (resolved_type
,
2125 TYPE_NFIELDS (resolved_type
)
2126 * sizeof (struct field
));
2127 memcpy (TYPE_FIELDS (resolved_type
),
2129 TYPE_NFIELDS (resolved_type
) * sizeof (struct field
));
2130 for (i
= 0; i
< TYPE_NFIELDS (resolved_type
); ++i
)
2134 if (field_is_static (&TYPE_FIELD (type
, i
)))
2137 t
= resolve_dynamic_type_internal (TYPE_FIELD_TYPE (resolved_type
, i
),
2139 TYPE_FIELD_TYPE (resolved_type
, i
) = t
;
2140 if (TYPE_LENGTH (t
) > max_len
)
2141 max_len
= TYPE_LENGTH (t
);
2144 TYPE_LENGTH (resolved_type
) = max_len
;
2145 return resolved_type
;
2148 /* Resolve dynamic bounds of members of the struct TYPE to static
2149 bounds. ADDR_STACK is a stack of struct property_addr_info to
2150 be used if needed during the dynamic resolution. */
2152 static struct type
*
2153 resolve_dynamic_struct (struct type
*type
,
2154 struct property_addr_info
*addr_stack
)
2156 struct type
*resolved_type
;
2158 unsigned resolved_type_bit_length
= 0;
2160 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_STRUCT
);
2161 gdb_assert (TYPE_NFIELDS (type
) > 0);
2163 resolved_type
= copy_type (type
);
2164 TYPE_FIELDS (resolved_type
)
2165 = (struct field
*) TYPE_ALLOC (resolved_type
,
2166 TYPE_NFIELDS (resolved_type
)
2167 * sizeof (struct field
));
2168 memcpy (TYPE_FIELDS (resolved_type
),
2170 TYPE_NFIELDS (resolved_type
) * sizeof (struct field
));
2171 for (i
= 0; i
< TYPE_NFIELDS (resolved_type
); ++i
)
2173 unsigned new_bit_length
;
2174 struct property_addr_info pinfo
;
2176 if (field_is_static (&TYPE_FIELD (type
, i
)))
2179 /* As we know this field is not a static field, the field's
2180 field_loc_kind should be FIELD_LOC_KIND_BITPOS. Verify
2181 this is the case, but only trigger a simple error rather
2182 than an internal error if that fails. While failing
2183 that verification indicates a bug in our code, the error
2184 is not severe enough to suggest to the user he stops
2185 his debugging session because of it. */
2186 if (TYPE_FIELD_LOC_KIND (type
, i
) != FIELD_LOC_KIND_BITPOS
)
2187 error (_("Cannot determine struct field location"
2188 " (invalid location kind)"));
2190 pinfo
.type
= check_typedef (TYPE_FIELD_TYPE (type
, i
));
2191 pinfo
.valaddr
= addr_stack
->valaddr
;
2194 + (TYPE_FIELD_BITPOS (resolved_type
, i
) / TARGET_CHAR_BIT
));
2195 pinfo
.next
= addr_stack
;
2197 TYPE_FIELD_TYPE (resolved_type
, i
)
2198 = resolve_dynamic_type_internal (TYPE_FIELD_TYPE (resolved_type
, i
),
2200 gdb_assert (TYPE_FIELD_LOC_KIND (resolved_type
, i
)
2201 == FIELD_LOC_KIND_BITPOS
);
2203 new_bit_length
= TYPE_FIELD_BITPOS (resolved_type
, i
);
2204 if (TYPE_FIELD_BITSIZE (resolved_type
, i
) != 0)
2205 new_bit_length
+= TYPE_FIELD_BITSIZE (resolved_type
, i
);
2207 new_bit_length
+= (TYPE_LENGTH (TYPE_FIELD_TYPE (resolved_type
, i
))
2210 /* Normally, we would use the position and size of the last field
2211 to determine the size of the enclosing structure. But GCC seems
2212 to be encoding the position of some fields incorrectly when
2213 the struct contains a dynamic field that is not placed last.
2214 So we compute the struct size based on the field that has
2215 the highest position + size - probably the best we can do. */
2216 if (new_bit_length
> resolved_type_bit_length
)
2217 resolved_type_bit_length
= new_bit_length
;
2220 /* The length of a type won't change for fortran, but it does for C and Ada.
2221 For fortran the size of dynamic fields might change over time but not the
2222 type length of the structure. If we adapt it, we run into problems
2223 when calculating the element offset for arrays of structs. */
2224 if (current_language
->la_language
!= language_fortran
)
2225 TYPE_LENGTH (resolved_type
)
2226 = (resolved_type_bit_length
+ TARGET_CHAR_BIT
- 1) / TARGET_CHAR_BIT
;
2228 /* The Ada language uses this field as a cache for static fixed types: reset
2229 it as RESOLVED_TYPE must have its own static fixed type. */
2230 TYPE_TARGET_TYPE (resolved_type
) = NULL
;
2232 return resolved_type
;
2235 /* Worker for resolved_dynamic_type. */
2237 static struct type
*
2238 resolve_dynamic_type_internal (struct type
*type
,
2239 struct property_addr_info
*addr_stack
,
2242 struct type
*real_type
= check_typedef (type
);
2243 struct type
*resolved_type
= type
;
2244 struct dynamic_prop
*prop
;
2247 if (!is_dynamic_type_internal (real_type
, top_level
))
2250 if (TYPE_CODE (type
) == TYPE_CODE_TYPEDEF
)
2252 resolved_type
= copy_type (type
);
2253 TYPE_TARGET_TYPE (resolved_type
)
2254 = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (type
), addr_stack
,
2259 /* Before trying to resolve TYPE, make sure it is not a stub. */
2262 switch (TYPE_CODE (type
))
2266 struct property_addr_info pinfo
;
2268 pinfo
.type
= check_typedef (TYPE_TARGET_TYPE (type
));
2269 pinfo
.valaddr
= NULL
;
2270 if (addr_stack
->valaddr
!= NULL
)
2271 pinfo
.addr
= extract_typed_address (addr_stack
->valaddr
, type
);
2273 pinfo
.addr
= read_memory_typed_address (addr_stack
->addr
, type
);
2274 pinfo
.next
= addr_stack
;
2276 resolved_type
= copy_type (type
);
2277 TYPE_TARGET_TYPE (resolved_type
)
2278 = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (type
),
2283 case TYPE_CODE_ARRAY
:
2284 resolved_type
= resolve_dynamic_array (type
, addr_stack
);
2287 case TYPE_CODE_RANGE
:
2288 resolved_type
= resolve_dynamic_range (type
, addr_stack
);
2291 case TYPE_CODE_UNION
:
2292 resolved_type
= resolve_dynamic_union (type
, addr_stack
);
2295 case TYPE_CODE_STRUCT
:
2296 resolved_type
= resolve_dynamic_struct (type
, addr_stack
);
2301 /* Resolve data_location attribute. */
2302 prop
= TYPE_DATA_LOCATION (resolved_type
);
2304 && dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2306 TYPE_DYN_PROP_ADDR (prop
) = value
;
2307 TYPE_DYN_PROP_KIND (prop
) = PROP_CONST
;
2310 return resolved_type
;
2313 /* See gdbtypes.h */
2316 resolve_dynamic_type (struct type
*type
, const gdb_byte
*valaddr
,
2319 struct property_addr_info pinfo
2320 = {check_typedef (type
), valaddr
, addr
, NULL
};
2322 return resolve_dynamic_type_internal (type
, &pinfo
, 1);
2325 /* See gdbtypes.h */
2327 struct dynamic_prop
*
2328 get_dyn_prop (enum dynamic_prop_node_kind prop_kind
, const struct type
*type
)
2330 struct dynamic_prop_list
*node
= TYPE_DYN_PROP_LIST (type
);
2332 while (node
!= NULL
)
2334 if (node
->prop_kind
== prop_kind
)
2341 /* See gdbtypes.h */
2344 add_dyn_prop (enum dynamic_prop_node_kind prop_kind
, struct dynamic_prop prop
,
2347 struct dynamic_prop_list
*temp
;
2349 gdb_assert (TYPE_OBJFILE_OWNED (type
));
2351 temp
= XOBNEW (&TYPE_OBJFILE (type
)->objfile_obstack
,
2352 struct dynamic_prop_list
);
2353 temp
->prop_kind
= prop_kind
;
2355 temp
->next
= TYPE_DYN_PROP_LIST (type
);
2357 TYPE_DYN_PROP_LIST (type
) = temp
;
2360 /* Remove dynamic property from TYPE in case it exists. */
2363 remove_dyn_prop (enum dynamic_prop_node_kind prop_kind
,
2366 struct dynamic_prop_list
*prev_node
, *curr_node
;
2368 curr_node
= TYPE_DYN_PROP_LIST (type
);
2371 while (NULL
!= curr_node
)
2373 if (curr_node
->prop_kind
== prop_kind
)
2375 /* Update the linked list but don't free anything.
2376 The property was allocated on objstack and it is not known
2377 if we are on top of it. Nevertheless, everything is released
2378 when the complete objstack is freed. */
2379 if (NULL
== prev_node
)
2380 TYPE_DYN_PROP_LIST (type
) = curr_node
->next
;
2382 prev_node
->next
= curr_node
->next
;
2387 prev_node
= curr_node
;
2388 curr_node
= curr_node
->next
;
2392 /* Find the real type of TYPE. This function returns the real type,
2393 after removing all layers of typedefs, and completing opaque or stub
2394 types. Completion changes the TYPE argument, but stripping of
2397 Instance flags (e.g. const/volatile) are preserved as typedefs are
2398 stripped. If necessary a new qualified form of the underlying type
2401 NOTE: This will return a typedef if TYPE_TARGET_TYPE for the typedef has
2402 not been computed and we're either in the middle of reading symbols, or
2403 there was no name for the typedef in the debug info.
2405 NOTE: Lookup of opaque types can throw errors for invalid symbol files.
2406 QUITs in the symbol reading code can also throw.
2407 Thus this function can throw an exception.
2409 If TYPE is a TYPE_CODE_TYPEDEF, its length is updated to the length of
2412 If this is a stubbed struct (i.e. declared as struct foo *), see if
2413 we can find a full definition in some other file. If so, copy this
2414 definition, so we can use it in future. There used to be a comment
2415 (but not any code) that if we don't find a full definition, we'd
2416 set a flag so we don't spend time in the future checking the same
2417 type. That would be a mistake, though--we might load in more
2418 symbols which contain a full definition for the type. */
2421 check_typedef (struct type
*type
)
2423 struct type
*orig_type
= type
;
2424 /* While we're removing typedefs, we don't want to lose qualifiers.
2425 E.g., const/volatile. */
2426 int instance_flags
= TYPE_INSTANCE_FLAGS (type
);
2430 while (TYPE_CODE (type
) == TYPE_CODE_TYPEDEF
)
2432 if (!TYPE_TARGET_TYPE (type
))
2437 /* It is dangerous to call lookup_symbol if we are currently
2438 reading a symtab. Infinite recursion is one danger. */
2439 if (currently_reading_symtab
)
2440 return make_qualified_type (type
, instance_flags
, NULL
);
2442 name
= type_name_no_tag (type
);
2443 /* FIXME: shouldn't we separately check the TYPE_NAME and
2444 the TYPE_TAG_NAME, and look in STRUCT_DOMAIN and/or
2445 VAR_DOMAIN as appropriate? (this code was written before
2446 TYPE_NAME and TYPE_TAG_NAME were separate). */
2449 stub_noname_complaint ();
2450 return make_qualified_type (type
, instance_flags
, NULL
);
2452 sym
= lookup_symbol (name
, 0, STRUCT_DOMAIN
, 0).symbol
;
2454 TYPE_TARGET_TYPE (type
) = SYMBOL_TYPE (sym
);
2455 else /* TYPE_CODE_UNDEF */
2456 TYPE_TARGET_TYPE (type
) = alloc_type_arch (get_type_arch (type
));
2458 type
= TYPE_TARGET_TYPE (type
);
2460 /* Preserve the instance flags as we traverse down the typedef chain.
2462 Handling address spaces/classes is nasty, what do we do if there's a
2464 E.g., what if an outer typedef marks the type as class_1 and an inner
2465 typedef marks the type as class_2?
2466 This is the wrong place to do such error checking. We leave it to
2467 the code that created the typedef in the first place to flag the
2468 error. We just pick the outer address space (akin to letting the
2469 outer cast in a chain of casting win), instead of assuming
2470 "it can't happen". */
2472 const int ALL_SPACES
= (TYPE_INSTANCE_FLAG_CODE_SPACE
2473 | TYPE_INSTANCE_FLAG_DATA_SPACE
);
2474 const int ALL_CLASSES
= TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL
;
2475 int new_instance_flags
= TYPE_INSTANCE_FLAGS (type
);
2477 /* Treat code vs data spaces and address classes separately. */
2478 if ((instance_flags
& ALL_SPACES
) != 0)
2479 new_instance_flags
&= ~ALL_SPACES
;
2480 if ((instance_flags
& ALL_CLASSES
) != 0)
2481 new_instance_flags
&= ~ALL_CLASSES
;
2483 instance_flags
|= new_instance_flags
;
2487 /* If this is a struct/class/union with no fields, then check
2488 whether a full definition exists somewhere else. This is for
2489 systems where a type definition with no fields is issued for such
2490 types, instead of identifying them as stub types in the first
2493 if (TYPE_IS_OPAQUE (type
)
2494 && opaque_type_resolution
2495 && !currently_reading_symtab
)
2497 const char *name
= type_name_no_tag (type
);
2498 struct type
*newtype
;
2502 stub_noname_complaint ();
2503 return make_qualified_type (type
, instance_flags
, NULL
);
2505 newtype
= lookup_transparent_type (name
);
2509 /* If the resolved type and the stub are in the same
2510 objfile, then replace the stub type with the real deal.
2511 But if they're in separate objfiles, leave the stub
2512 alone; we'll just look up the transparent type every time
2513 we call check_typedef. We can't create pointers between
2514 types allocated to different objfiles, since they may
2515 have different lifetimes. Trying to copy NEWTYPE over to
2516 TYPE's objfile is pointless, too, since you'll have to
2517 move over any other types NEWTYPE refers to, which could
2518 be an unbounded amount of stuff. */
2519 if (TYPE_OBJFILE (newtype
) == TYPE_OBJFILE (type
))
2520 type
= make_qualified_type (newtype
,
2521 TYPE_INSTANCE_FLAGS (type
),
2527 /* Otherwise, rely on the stub flag being set for opaque/stubbed
2529 else if (TYPE_STUB (type
) && !currently_reading_symtab
)
2531 const char *name
= type_name_no_tag (type
);
2532 /* FIXME: shouldn't we separately check the TYPE_NAME and the
2533 TYPE_TAG_NAME, and look in STRUCT_DOMAIN and/or VAR_DOMAIN
2534 as appropriate? (this code was written before TYPE_NAME and
2535 TYPE_TAG_NAME were separate). */
2540 stub_noname_complaint ();
2541 return make_qualified_type (type
, instance_flags
, NULL
);
2543 sym
= lookup_symbol (name
, 0, STRUCT_DOMAIN
, 0).symbol
;
2546 /* Same as above for opaque types, we can replace the stub
2547 with the complete type only if they are in the same
2549 if (TYPE_OBJFILE (SYMBOL_TYPE(sym
)) == TYPE_OBJFILE (type
))
2550 type
= make_qualified_type (SYMBOL_TYPE (sym
),
2551 TYPE_INSTANCE_FLAGS (type
),
2554 type
= SYMBOL_TYPE (sym
);
2558 if (TYPE_TARGET_STUB (type
))
2560 struct type
*target_type
= check_typedef (TYPE_TARGET_TYPE (type
));
2562 if (TYPE_STUB (target_type
) || TYPE_TARGET_STUB (target_type
))
2564 /* Nothing we can do. */
2566 else if (TYPE_CODE (type
) == TYPE_CODE_RANGE
)
2568 TYPE_LENGTH (type
) = TYPE_LENGTH (target_type
);
2569 TYPE_TARGET_STUB (type
) = 0;
2573 type
= make_qualified_type (type
, instance_flags
, NULL
);
2575 /* Cache TYPE_LENGTH for future use. */
2576 TYPE_LENGTH (orig_type
) = TYPE_LENGTH (type
);
2581 /* Parse a type expression in the string [P..P+LENGTH). If an error
2582 occurs, silently return a void type. */
2584 static struct type
*
2585 safe_parse_type (struct gdbarch
*gdbarch
, char *p
, int length
)
2587 struct ui_file
*saved_gdb_stderr
;
2588 struct type
*type
= NULL
; /* Initialize to keep gcc happy. */
2590 /* Suppress error messages. */
2591 saved_gdb_stderr
= gdb_stderr
;
2592 gdb_stderr
= &null_stream
;
2594 /* Call parse_and_eval_type() without fear of longjmp()s. */
2597 type
= parse_and_eval_type (p
, length
);
2599 CATCH (except
, RETURN_MASK_ERROR
)
2601 type
= builtin_type (gdbarch
)->builtin_void
;
2605 /* Stop suppressing error messages. */
2606 gdb_stderr
= saved_gdb_stderr
;
2611 /* Ugly hack to convert method stubs into method types.
2613 He ain't kiddin'. This demangles the name of the method into a
2614 string including argument types, parses out each argument type,
2615 generates a string casting a zero to that type, evaluates the
2616 string, and stuffs the resulting type into an argtype vector!!!
2617 Then it knows the type of the whole function (including argument
2618 types for overloading), which info used to be in the stab's but was
2619 removed to hack back the space required for them. */
2622 check_stub_method (struct type
*type
, int method_id
, int signature_id
)
2624 struct gdbarch
*gdbarch
= get_type_arch (type
);
2626 char *mangled_name
= gdb_mangle_name (type
, method_id
, signature_id
);
2627 char *demangled_name
= gdb_demangle (mangled_name
,
2628 DMGL_PARAMS
| DMGL_ANSI
);
2629 char *argtypetext
, *p
;
2630 int depth
= 0, argcount
= 1;
2631 struct field
*argtypes
;
2634 /* Make sure we got back a function string that we can use. */
2636 p
= strchr (demangled_name
, '(');
2640 if (demangled_name
== NULL
|| p
== NULL
)
2641 error (_("Internal: Cannot demangle mangled name `%s'."),
2644 /* Now, read in the parameters that define this type. */
2649 if (*p
== '(' || *p
== '<')
2653 else if (*p
== ')' || *p
== '>')
2657 else if (*p
== ',' && depth
== 0)
2665 /* If we read one argument and it was ``void'', don't count it. */
2666 if (startswith (argtypetext
, "(void)"))
2669 /* We need one extra slot, for the THIS pointer. */
2671 argtypes
= (struct field
*)
2672 TYPE_ALLOC (type
, (argcount
+ 1) * sizeof (struct field
));
2675 /* Add THIS pointer for non-static methods. */
2676 f
= TYPE_FN_FIELDLIST1 (type
, method_id
);
2677 if (TYPE_FN_FIELD_STATIC_P (f
, signature_id
))
2681 argtypes
[0].type
= lookup_pointer_type (type
);
2685 if (*p
!= ')') /* () means no args, skip while. */
2690 if (depth
<= 0 && (*p
== ',' || *p
== ')'))
2692 /* Avoid parsing of ellipsis, they will be handled below.
2693 Also avoid ``void'' as above. */
2694 if (strncmp (argtypetext
, "...", p
- argtypetext
) != 0
2695 && strncmp (argtypetext
, "void", p
- argtypetext
) != 0)
2697 argtypes
[argcount
].type
=
2698 safe_parse_type (gdbarch
, argtypetext
, p
- argtypetext
);
2701 argtypetext
= p
+ 1;
2704 if (*p
== '(' || *p
== '<')
2708 else if (*p
== ')' || *p
== '>')
2717 TYPE_FN_FIELD_PHYSNAME (f
, signature_id
) = mangled_name
;
2719 /* Now update the old "stub" type into a real type. */
2720 mtype
= TYPE_FN_FIELD_TYPE (f
, signature_id
);
2721 /* MTYPE may currently be a function (TYPE_CODE_FUNC).
2722 We want a method (TYPE_CODE_METHOD). */
2723 smash_to_method_type (mtype
, type
, TYPE_TARGET_TYPE (mtype
),
2724 argtypes
, argcount
, p
[-2] == '.');
2725 TYPE_STUB (mtype
) = 0;
2726 TYPE_FN_FIELD_STUB (f
, signature_id
) = 0;
2728 xfree (demangled_name
);
2731 /* This is the external interface to check_stub_method, above. This
2732 function unstubs all of the signatures for TYPE's METHOD_ID method
2733 name. After calling this function TYPE_FN_FIELD_STUB will be
2734 cleared for each signature and TYPE_FN_FIELDLIST_NAME will be
2737 This function unfortunately can not die until stabs do. */
2740 check_stub_method_group (struct type
*type
, int method_id
)
2742 int len
= TYPE_FN_FIELDLIST_LENGTH (type
, method_id
);
2743 struct fn_field
*f
= TYPE_FN_FIELDLIST1 (type
, method_id
);
2744 int j
, found_stub
= 0;
2746 for (j
= 0; j
< len
; j
++)
2747 if (TYPE_FN_FIELD_STUB (f
, j
))
2750 check_stub_method (type
, method_id
, j
);
2753 /* GNU v3 methods with incorrect names were corrected when we read
2754 in type information, because it was cheaper to do it then. The
2755 only GNU v2 methods with incorrect method names are operators and
2756 destructors; destructors were also corrected when we read in type
2759 Therefore the only thing we need to handle here are v2 operator
2761 if (found_stub
&& !startswith (TYPE_FN_FIELD_PHYSNAME (f
, 0), "_Z"))
2764 char dem_opname
[256];
2766 ret
= cplus_demangle_opname (TYPE_FN_FIELDLIST_NAME (type
,
2768 dem_opname
, DMGL_ANSI
);
2770 ret
= cplus_demangle_opname (TYPE_FN_FIELDLIST_NAME (type
,
2774 TYPE_FN_FIELDLIST_NAME (type
, method_id
) = xstrdup (dem_opname
);
2778 /* Ensure it is in .rodata (if available) by workarounding GCC PR 44690. */
2779 const struct cplus_struct_type cplus_struct_default
= { };
2782 allocate_cplus_struct_type (struct type
*type
)
2784 if (HAVE_CPLUS_STRUCT (type
))
2785 /* Structure was already allocated. Nothing more to do. */
2788 TYPE_SPECIFIC_FIELD (type
) = TYPE_SPECIFIC_CPLUS_STUFF
;
2789 TYPE_RAW_CPLUS_SPECIFIC (type
) = (struct cplus_struct_type
*)
2790 TYPE_ALLOC (type
, sizeof (struct cplus_struct_type
));
2791 *(TYPE_RAW_CPLUS_SPECIFIC (type
)) = cplus_struct_default
;
2792 set_type_vptr_fieldno (type
, -1);
2795 const struct gnat_aux_type gnat_aux_default
=
2798 /* Set the TYPE's type-specific kind to TYPE_SPECIFIC_GNAT_STUFF,
2799 and allocate the associated gnat-specific data. The gnat-specific
2800 data is also initialized to gnat_aux_default. */
2803 allocate_gnat_aux_type (struct type
*type
)
2805 TYPE_SPECIFIC_FIELD (type
) = TYPE_SPECIFIC_GNAT_STUFF
;
2806 TYPE_GNAT_SPECIFIC (type
) = (struct gnat_aux_type
*)
2807 TYPE_ALLOC (type
, sizeof (struct gnat_aux_type
));
2808 *(TYPE_GNAT_SPECIFIC (type
)) = gnat_aux_default
;
2811 /* Helper function to initialize a newly allocated type. Set type code
2812 to CODE and initialize the type-specific fields accordingly. */
2815 set_type_code (struct type
*type
, enum type_code code
)
2817 TYPE_CODE (type
) = code
;
2821 case TYPE_CODE_STRUCT
:
2822 case TYPE_CODE_UNION
:
2823 case TYPE_CODE_NAMESPACE
:
2824 INIT_CPLUS_SPECIFIC (type
);
2827 TYPE_SPECIFIC_FIELD (type
) = TYPE_SPECIFIC_FLOATFORMAT
;
2829 case TYPE_CODE_FUNC
:
2830 INIT_FUNC_SPECIFIC (type
);
2835 /* Helper function to verify floating-point format and size.
2836 BIT is the type size in bits; if BIT equals -1, the size is
2837 determined by the floatformat. Returns size to be used. */
2840 verify_floatformat (int bit
, const struct floatformat
*floatformat
)
2842 gdb_assert (floatformat
!= NULL
);
2845 bit
= floatformat
->totalsize
;
2847 gdb_assert (bit
>= 0);
2848 gdb_assert (bit
>= floatformat
->totalsize
);
2853 /* Return the floating-point format for a floating-point variable of
2856 const struct floatformat
*
2857 floatformat_from_type (const struct type
*type
)
2859 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_FLT
);
2860 gdb_assert (TYPE_FLOATFORMAT (type
));
2861 return TYPE_FLOATFORMAT (type
);
2864 /* Helper function to initialize the standard scalar types.
2866 If NAME is non-NULL, then it is used to initialize the type name.
2867 Note that NAME is not copied; it is required to have a lifetime at
2868 least as long as OBJFILE. */
2871 init_type (struct objfile
*objfile
, enum type_code code
, int bit
,
2876 type
= alloc_type (objfile
);
2877 set_type_code (type
, code
);
2878 gdb_assert ((bit
% TARGET_CHAR_BIT
) == 0);
2879 TYPE_LENGTH (type
) = bit
/ TARGET_CHAR_BIT
;
2880 TYPE_NAME (type
) = name
;
2885 /* Allocate a TYPE_CODE_ERROR type structure associated with OBJFILE,
2886 to use with variables that have no debug info. NAME is the type
2889 static struct type
*
2890 init_nodebug_var_type (struct objfile
*objfile
, const char *name
)
2892 return init_type (objfile
, TYPE_CODE_ERROR
, 0, name
);
2895 /* Allocate a TYPE_CODE_INT type structure associated with OBJFILE.
2896 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
2897 the type's TYPE_UNSIGNED flag. NAME is the type name. */
2900 init_integer_type (struct objfile
*objfile
,
2901 int bit
, int unsigned_p
, const char *name
)
2905 t
= init_type (objfile
, TYPE_CODE_INT
, bit
, name
);
2907 TYPE_UNSIGNED (t
) = 1;
2912 /* Allocate a TYPE_CODE_CHAR type structure associated with OBJFILE.
2913 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
2914 the type's TYPE_UNSIGNED flag. NAME is the type name. */
2917 init_character_type (struct objfile
*objfile
,
2918 int bit
, int unsigned_p
, const char *name
)
2922 t
= init_type (objfile
, TYPE_CODE_CHAR
, bit
, name
);
2924 TYPE_UNSIGNED (t
) = 1;
2929 /* Allocate a TYPE_CODE_BOOL type structure associated with OBJFILE.
2930 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
2931 the type's TYPE_UNSIGNED flag. NAME is the type name. */
2934 init_boolean_type (struct objfile
*objfile
,
2935 int bit
, int unsigned_p
, const char *name
)
2939 t
= init_type (objfile
, TYPE_CODE_BOOL
, bit
, name
);
2941 TYPE_UNSIGNED (t
) = 1;
2946 /* Allocate a TYPE_CODE_FLT type structure associated with OBJFILE.
2947 BIT is the type size in bits; if BIT equals -1, the size is
2948 determined by the floatformat. NAME is the type name. Set the
2949 TYPE_FLOATFORMAT from FLOATFORMATS. */
2952 init_float_type (struct objfile
*objfile
,
2953 int bit
, const char *name
,
2954 const struct floatformat
**floatformats
)
2956 struct gdbarch
*gdbarch
= get_objfile_arch (objfile
);
2957 const struct floatformat
*fmt
= floatformats
[gdbarch_byte_order (gdbarch
)];
2960 bit
= verify_floatformat (bit
, fmt
);
2961 t
= init_type (objfile
, TYPE_CODE_FLT
, bit
, name
);
2962 TYPE_FLOATFORMAT (t
) = fmt
;
2967 /* Allocate a TYPE_CODE_DECFLOAT type structure associated with OBJFILE.
2968 BIT is the type size in bits. NAME is the type name. */
2971 init_decfloat_type (struct objfile
*objfile
, int bit
, const char *name
)
2975 t
= init_type (objfile
, TYPE_CODE_DECFLOAT
, bit
, name
);
2979 /* Allocate a TYPE_CODE_COMPLEX type structure associated with OBJFILE.
2980 NAME is the type name. TARGET_TYPE is the component float type. */
2983 init_complex_type (struct objfile
*objfile
,
2984 const char *name
, struct type
*target_type
)
2988 t
= init_type (objfile
, TYPE_CODE_COMPLEX
,
2989 2 * TYPE_LENGTH (target_type
) * TARGET_CHAR_BIT
, name
);
2990 TYPE_TARGET_TYPE (t
) = target_type
;
2994 /* Allocate a TYPE_CODE_PTR type structure associated with OBJFILE.
2995 BIT is the pointer type size in bits. NAME is the type name.
2996 TARGET_TYPE is the pointer target type. Always sets the pointer type's
2997 TYPE_UNSIGNED flag. */
3000 init_pointer_type (struct objfile
*objfile
,
3001 int bit
, const char *name
, struct type
*target_type
)
3005 t
= init_type (objfile
, TYPE_CODE_PTR
, bit
, name
);
3006 TYPE_TARGET_TYPE (t
) = target_type
;
3007 TYPE_UNSIGNED (t
) = 1;
3012 /* Queries on types. */
3015 can_dereference (struct type
*t
)
3017 /* FIXME: Should we return true for references as well as
3019 t
= check_typedef (t
);
3022 && TYPE_CODE (t
) == TYPE_CODE_PTR
3023 && TYPE_CODE (TYPE_TARGET_TYPE (t
)) != TYPE_CODE_VOID
);
3027 is_integral_type (struct type
*t
)
3029 t
= check_typedef (t
);
3032 && ((TYPE_CODE (t
) == TYPE_CODE_INT
)
3033 || (TYPE_CODE (t
) == TYPE_CODE_ENUM
)
3034 || (TYPE_CODE (t
) == TYPE_CODE_FLAGS
)
3035 || (TYPE_CODE (t
) == TYPE_CODE_CHAR
)
3036 || (TYPE_CODE (t
) == TYPE_CODE_RANGE
)
3037 || (TYPE_CODE (t
) == TYPE_CODE_BOOL
)));
3041 is_floating_type (struct type
*t
)
3043 t
= check_typedef (t
);
3046 && ((TYPE_CODE (t
) == TYPE_CODE_FLT
)
3047 || (TYPE_CODE (t
) == TYPE_CODE_DECFLOAT
)));
3050 /* Return true if TYPE is scalar. */
3053 is_scalar_type (struct type
*type
)
3055 type
= check_typedef (type
);
3057 switch (TYPE_CODE (type
))
3059 case TYPE_CODE_ARRAY
:
3060 case TYPE_CODE_STRUCT
:
3061 case TYPE_CODE_UNION
:
3063 case TYPE_CODE_STRING
:
3070 /* Return true if T is scalar, or a composite type which in practice has
3071 the memory layout of a scalar type. E.g., an array or struct with only
3072 one scalar element inside it, or a union with only scalar elements. */
3075 is_scalar_type_recursive (struct type
*t
)
3077 t
= check_typedef (t
);
3079 if (is_scalar_type (t
))
3081 /* Are we dealing with an array or string of known dimensions? */
3082 else if ((TYPE_CODE (t
) == TYPE_CODE_ARRAY
3083 || TYPE_CODE (t
) == TYPE_CODE_STRING
) && TYPE_NFIELDS (t
) == 1
3084 && TYPE_CODE (TYPE_INDEX_TYPE (t
)) == TYPE_CODE_RANGE
)
3086 LONGEST low_bound
, high_bound
;
3087 struct type
*elt_type
= check_typedef (TYPE_TARGET_TYPE (t
));
3089 get_discrete_bounds (TYPE_INDEX_TYPE (t
), &low_bound
, &high_bound
);
3091 return high_bound
== low_bound
&& is_scalar_type_recursive (elt_type
);
3093 /* Are we dealing with a struct with one element? */
3094 else if (TYPE_CODE (t
) == TYPE_CODE_STRUCT
&& TYPE_NFIELDS (t
) == 1)
3095 return is_scalar_type_recursive (TYPE_FIELD_TYPE (t
, 0));
3096 else if (TYPE_CODE (t
) == TYPE_CODE_UNION
)
3098 int i
, n
= TYPE_NFIELDS (t
);
3100 /* If all elements of the union are scalar, then the union is scalar. */
3101 for (i
= 0; i
< n
; i
++)
3102 if (!is_scalar_type_recursive (TYPE_FIELD_TYPE (t
, i
)))
3111 /* Return true is T is a class or a union. False otherwise. */
3114 class_or_union_p (const struct type
*t
)
3116 return (TYPE_CODE (t
) == TYPE_CODE_STRUCT
3117 || TYPE_CODE (t
) == TYPE_CODE_UNION
);
3120 /* A helper function which returns true if types A and B represent the
3121 "same" class type. This is true if the types have the same main
3122 type, or the same name. */
3125 class_types_same_p (const struct type
*a
, const struct type
*b
)
3127 return (TYPE_MAIN_TYPE (a
) == TYPE_MAIN_TYPE (b
)
3128 || (TYPE_NAME (a
) && TYPE_NAME (b
)
3129 && !strcmp (TYPE_NAME (a
), TYPE_NAME (b
))));
3132 /* If BASE is an ancestor of DCLASS return the distance between them.
3133 otherwise return -1;
3137 class B: public A {};
3138 class C: public B {};
3141 distance_to_ancestor (A, A, 0) = 0
3142 distance_to_ancestor (A, B, 0) = 1
3143 distance_to_ancestor (A, C, 0) = 2
3144 distance_to_ancestor (A, D, 0) = 3
3146 If PUBLIC is 1 then only public ancestors are considered,
3147 and the function returns the distance only if BASE is a public ancestor
3151 distance_to_ancestor (A, D, 1) = -1. */
3154 distance_to_ancestor (struct type
*base
, struct type
*dclass
, int is_public
)
3159 base
= check_typedef (base
);
3160 dclass
= check_typedef (dclass
);
3162 if (class_types_same_p (base
, dclass
))
3165 for (i
= 0; i
< TYPE_N_BASECLASSES (dclass
); i
++)
3167 if (is_public
&& ! BASETYPE_VIA_PUBLIC (dclass
, i
))
3170 d
= distance_to_ancestor (base
, TYPE_BASECLASS (dclass
, i
), is_public
);
3178 /* Check whether BASE is an ancestor or base class or DCLASS
3179 Return 1 if so, and 0 if not.
3180 Note: If BASE and DCLASS are of the same type, this function
3181 will return 1. So for some class A, is_ancestor (A, A) will
3185 is_ancestor (struct type
*base
, struct type
*dclass
)
3187 return distance_to_ancestor (base
, dclass
, 0) >= 0;
3190 /* Like is_ancestor, but only returns true when BASE is a public
3191 ancestor of DCLASS. */
3194 is_public_ancestor (struct type
*base
, struct type
*dclass
)
3196 return distance_to_ancestor (base
, dclass
, 1) >= 0;
3199 /* A helper function for is_unique_ancestor. */
3202 is_unique_ancestor_worker (struct type
*base
, struct type
*dclass
,
3204 const gdb_byte
*valaddr
, int embedded_offset
,
3205 CORE_ADDR address
, struct value
*val
)
3209 base
= check_typedef (base
);
3210 dclass
= check_typedef (dclass
);
3212 for (i
= 0; i
< TYPE_N_BASECLASSES (dclass
) && count
< 2; ++i
)
3217 iter
= check_typedef (TYPE_BASECLASS (dclass
, i
));
3219 this_offset
= baseclass_offset (dclass
, i
, valaddr
, embedded_offset
,
3222 if (class_types_same_p (base
, iter
))
3224 /* If this is the first subclass, set *OFFSET and set count
3225 to 1. Otherwise, if this is at the same offset as
3226 previous instances, do nothing. Otherwise, increment
3230 *offset
= this_offset
;
3233 else if (this_offset
== *offset
)
3241 count
+= is_unique_ancestor_worker (base
, iter
, offset
,
3243 embedded_offset
+ this_offset
,
3250 /* Like is_ancestor, but only returns true if BASE is a unique base
3251 class of the type of VAL. */
3254 is_unique_ancestor (struct type
*base
, struct value
*val
)
3258 return is_unique_ancestor_worker (base
, value_type (val
), &offset
,
3259 value_contents_for_printing (val
),
3260 value_embedded_offset (val
),
3261 value_address (val
), val
) == 1;
3265 /* Overload resolution. */
3267 /* Return the sum of the rank of A with the rank of B. */
3270 sum_ranks (struct rank a
, struct rank b
)
3273 c
.rank
= a
.rank
+ b
.rank
;
3274 c
.subrank
= a
.subrank
+ b
.subrank
;
3278 /* Compare rank A and B and return:
3280 1 if a is better than b
3281 -1 if b is better than a. */
3284 compare_ranks (struct rank a
, struct rank b
)
3286 if (a
.rank
== b
.rank
)
3288 if (a
.subrank
== b
.subrank
)
3290 if (a
.subrank
< b
.subrank
)
3292 if (a
.subrank
> b
.subrank
)
3296 if (a
.rank
< b
.rank
)
3299 /* a.rank > b.rank */
3303 /* Functions for overload resolution begin here. */
3305 /* Compare two badness vectors A and B and return the result.
3306 0 => A and B are identical
3307 1 => A and B are incomparable
3308 2 => A is better than B
3309 3 => A is worse than B */
3312 compare_badness (struct badness_vector
*a
, struct badness_vector
*b
)
3316 short found_pos
= 0; /* any positives in c? */
3317 short found_neg
= 0; /* any negatives in c? */
3319 /* differing lengths => incomparable */
3320 if (a
->length
!= b
->length
)
3323 /* Subtract b from a */
3324 for (i
= 0; i
< a
->length
; i
++)
3326 tmp
= compare_ranks (b
->rank
[i
], a
->rank
[i
]);
3336 return 1; /* incomparable */
3338 return 3; /* A > B */
3344 return 2; /* A < B */
3346 return 0; /* A == B */
3350 /* Rank a function by comparing its parameter types (PARMS, length
3351 NPARMS), to the types of an argument list (ARGS, length NARGS).
3352 Return a pointer to a badness vector. This has NARGS + 1
3355 struct badness_vector
*
3356 rank_function (struct type
**parms
, int nparms
,
3357 struct value
**args
, int nargs
)
3360 struct badness_vector
*bv
= XNEW (struct badness_vector
);
3361 int min_len
= nparms
< nargs
? nparms
: nargs
;
3363 bv
->length
= nargs
+ 1; /* add 1 for the length-match rank. */
3364 bv
->rank
= XNEWVEC (struct rank
, nargs
+ 1);
3366 /* First compare the lengths of the supplied lists.
3367 If there is a mismatch, set it to a high value. */
3369 /* pai/1997-06-03 FIXME: when we have debug info about default
3370 arguments and ellipsis parameter lists, we should consider those
3371 and rank the length-match more finely. */
3373 LENGTH_MATCH (bv
) = (nargs
!= nparms
)
3374 ? LENGTH_MISMATCH_BADNESS
3375 : EXACT_MATCH_BADNESS
;
3377 /* Now rank all the parameters of the candidate function. */
3378 for (i
= 1; i
<= min_len
; i
++)
3379 bv
->rank
[i
] = rank_one_type (parms
[i
- 1], value_type (args
[i
- 1]),
3382 /* If more arguments than parameters, add dummy entries. */
3383 for (i
= min_len
+ 1; i
<= nargs
; i
++)
3384 bv
->rank
[i
] = TOO_FEW_PARAMS_BADNESS
;
3389 /* Compare the names of two integer types, assuming that any sign
3390 qualifiers have been checked already. We do it this way because
3391 there may be an "int" in the name of one of the types. */
3394 integer_types_same_name_p (const char *first
, const char *second
)
3396 int first_p
, second_p
;
3398 /* If both are shorts, return 1; if neither is a short, keep
3400 first_p
= (strstr (first
, "short") != NULL
);
3401 second_p
= (strstr (second
, "short") != NULL
);
3402 if (first_p
&& second_p
)
3404 if (first_p
|| second_p
)
3407 /* Likewise for long. */
3408 first_p
= (strstr (first
, "long") != NULL
);
3409 second_p
= (strstr (second
, "long") != NULL
);
3410 if (first_p
&& second_p
)
3412 if (first_p
|| second_p
)
3415 /* Likewise for char. */
3416 first_p
= (strstr (first
, "char") != NULL
);
3417 second_p
= (strstr (second
, "char") != NULL
);
3418 if (first_p
&& second_p
)
3420 if (first_p
|| second_p
)
3423 /* They must both be ints. */
3427 /* Compares type A to type B returns 1 if the represent the same type
3431 types_equal (struct type
*a
, struct type
*b
)
3433 /* Identical type pointers. */
3434 /* However, this still doesn't catch all cases of same type for b
3435 and a. The reason is that builtin types are different from
3436 the same ones constructed from the object. */
3440 /* Resolve typedefs */
3441 if (TYPE_CODE (a
) == TYPE_CODE_TYPEDEF
)
3442 a
= check_typedef (a
);
3443 if (TYPE_CODE (b
) == TYPE_CODE_TYPEDEF
)
3444 b
= check_typedef (b
);
3446 /* If after resolving typedefs a and b are not of the same type
3447 code then they are not equal. */
3448 if (TYPE_CODE (a
) != TYPE_CODE (b
))
3451 /* If a and b are both pointers types or both reference types then
3452 they are equal of the same type iff the objects they refer to are
3453 of the same type. */
3454 if (TYPE_CODE (a
) == TYPE_CODE_PTR
3455 || TYPE_CODE (a
) == TYPE_CODE_REF
)
3456 return types_equal (TYPE_TARGET_TYPE (a
),
3457 TYPE_TARGET_TYPE (b
));
3459 /* Well, damnit, if the names are exactly the same, I'll say they
3460 are exactly the same. This happens when we generate method
3461 stubs. The types won't point to the same address, but they
3462 really are the same. */
3464 if (TYPE_NAME (a
) && TYPE_NAME (b
)
3465 && strcmp (TYPE_NAME (a
), TYPE_NAME (b
)) == 0)
3468 /* Check if identical after resolving typedefs. */
3472 /* Two function types are equal if their argument and return types
3474 if (TYPE_CODE (a
) == TYPE_CODE_FUNC
)
3478 if (TYPE_NFIELDS (a
) != TYPE_NFIELDS (b
))
3481 if (!types_equal (TYPE_TARGET_TYPE (a
), TYPE_TARGET_TYPE (b
)))
3484 for (i
= 0; i
< TYPE_NFIELDS (a
); ++i
)
3485 if (!types_equal (TYPE_FIELD_TYPE (a
, i
), TYPE_FIELD_TYPE (b
, i
)))
3494 /* Deep comparison of types. */
3496 /* An entry in the type-equality bcache. */
3498 typedef struct type_equality_entry
3500 struct type
*type1
, *type2
;
3501 } type_equality_entry_d
;
3503 DEF_VEC_O (type_equality_entry_d
);
3505 /* A helper function to compare two strings. Returns 1 if they are
3506 the same, 0 otherwise. Handles NULLs properly. */
3509 compare_maybe_null_strings (const char *s
, const char *t
)
3511 if (s
== NULL
&& t
!= NULL
)
3513 else if (s
!= NULL
&& t
== NULL
)
3515 else if (s
== NULL
&& t
== NULL
)
3517 return strcmp (s
, t
) == 0;
3520 /* A helper function for check_types_worklist that checks two types for
3521 "deep" equality. Returns non-zero if the types are considered the
3522 same, zero otherwise. */
3525 check_types_equal (struct type
*type1
, struct type
*type2
,
3526 VEC (type_equality_entry_d
) **worklist
)
3528 type1
= check_typedef (type1
);
3529 type2
= check_typedef (type2
);
3534 if (TYPE_CODE (type1
) != TYPE_CODE (type2
)
3535 || TYPE_LENGTH (type1
) != TYPE_LENGTH (type2
)
3536 || TYPE_UNSIGNED (type1
) != TYPE_UNSIGNED (type2
)
3537 || TYPE_NOSIGN (type1
) != TYPE_NOSIGN (type2
)
3538 || TYPE_VARARGS (type1
) != TYPE_VARARGS (type2
)
3539 || TYPE_VECTOR (type1
) != TYPE_VECTOR (type2
)
3540 || TYPE_NOTTEXT (type1
) != TYPE_NOTTEXT (type2
)
3541 || TYPE_INSTANCE_FLAGS (type1
) != TYPE_INSTANCE_FLAGS (type2
)
3542 || TYPE_NFIELDS (type1
) != TYPE_NFIELDS (type2
))
3545 if (!compare_maybe_null_strings (TYPE_TAG_NAME (type1
),
3546 TYPE_TAG_NAME (type2
)))
3548 if (!compare_maybe_null_strings (TYPE_NAME (type1
), TYPE_NAME (type2
)))
3551 if (TYPE_CODE (type1
) == TYPE_CODE_RANGE
)
3553 if (*TYPE_RANGE_DATA (type1
) != *TYPE_RANGE_DATA (type2
))
3560 for (i
= 0; i
< TYPE_NFIELDS (type1
); ++i
)
3562 const struct field
*field1
= &TYPE_FIELD (type1
, i
);
3563 const struct field
*field2
= &TYPE_FIELD (type2
, i
);
3564 struct type_equality_entry entry
;
3566 if (FIELD_ARTIFICIAL (*field1
) != FIELD_ARTIFICIAL (*field2
)
3567 || FIELD_BITSIZE (*field1
) != FIELD_BITSIZE (*field2
)
3568 || FIELD_LOC_KIND (*field1
) != FIELD_LOC_KIND (*field2
))
3570 if (!compare_maybe_null_strings (FIELD_NAME (*field1
),
3571 FIELD_NAME (*field2
)))
3573 switch (FIELD_LOC_KIND (*field1
))
3575 case FIELD_LOC_KIND_BITPOS
:
3576 if (FIELD_BITPOS (*field1
) != FIELD_BITPOS (*field2
))
3579 case FIELD_LOC_KIND_ENUMVAL
:
3580 if (FIELD_ENUMVAL (*field1
) != FIELD_ENUMVAL (*field2
))
3583 case FIELD_LOC_KIND_PHYSADDR
:
3584 if (FIELD_STATIC_PHYSADDR (*field1
)
3585 != FIELD_STATIC_PHYSADDR (*field2
))
3588 case FIELD_LOC_KIND_PHYSNAME
:
3589 if (!compare_maybe_null_strings (FIELD_STATIC_PHYSNAME (*field1
),
3590 FIELD_STATIC_PHYSNAME (*field2
)))
3593 case FIELD_LOC_KIND_DWARF_BLOCK
:
3595 struct dwarf2_locexpr_baton
*block1
, *block2
;
3597 block1
= FIELD_DWARF_BLOCK (*field1
);
3598 block2
= FIELD_DWARF_BLOCK (*field2
);
3599 if (block1
->per_cu
!= block2
->per_cu
3600 || block1
->size
!= block2
->size
3601 || memcmp (block1
->data
, block2
->data
, block1
->size
) != 0)
3606 internal_error (__FILE__
, __LINE__
, _("Unsupported field kind "
3607 "%d by check_types_equal"),
3608 FIELD_LOC_KIND (*field1
));
3611 entry
.type1
= FIELD_TYPE (*field1
);
3612 entry
.type2
= FIELD_TYPE (*field2
);
3613 VEC_safe_push (type_equality_entry_d
, *worklist
, &entry
);
3617 if (TYPE_TARGET_TYPE (type1
) != NULL
)
3619 struct type_equality_entry entry
;
3621 if (TYPE_TARGET_TYPE (type2
) == NULL
)
3624 entry
.type1
= TYPE_TARGET_TYPE (type1
);
3625 entry
.type2
= TYPE_TARGET_TYPE (type2
);
3626 VEC_safe_push (type_equality_entry_d
, *worklist
, &entry
);
3628 else if (TYPE_TARGET_TYPE (type2
) != NULL
)
3634 /* Check types on a worklist for equality. Returns zero if any pair
3635 is not equal, non-zero if they are all considered equal. */
3638 check_types_worklist (VEC (type_equality_entry_d
) **worklist
,
3639 struct bcache
*cache
)
3641 while (!VEC_empty (type_equality_entry_d
, *worklist
))
3643 struct type_equality_entry entry
;
3646 entry
= *VEC_last (type_equality_entry_d
, *worklist
);
3647 VEC_pop (type_equality_entry_d
, *worklist
);
3649 /* If the type pair has already been visited, we know it is
3651 bcache_full (&entry
, sizeof (entry
), cache
, &added
);
3655 if (check_types_equal (entry
.type1
, entry
.type2
, worklist
) == 0)
3662 /* Return non-zero if types TYPE1 and TYPE2 are equal, as determined by a
3663 "deep comparison". Otherwise return zero. */
3666 types_deeply_equal (struct type
*type1
, struct type
*type2
)
3668 struct gdb_exception except
= exception_none
;
3670 struct bcache
*cache
;
3671 VEC (type_equality_entry_d
) *worklist
= NULL
;
3672 struct type_equality_entry entry
;
3674 gdb_assert (type1
!= NULL
&& type2
!= NULL
);
3676 /* Early exit for the simple case. */
3680 cache
= bcache_xmalloc (NULL
, NULL
);
3682 entry
.type1
= type1
;
3683 entry
.type2
= type2
;
3684 VEC_safe_push (type_equality_entry_d
, worklist
, &entry
);
3686 /* check_types_worklist calls several nested helper functions, some
3687 of which can raise a GDB exception, so we just check and rethrow
3688 here. If there is a GDB exception, a comparison is not capable
3689 (or trusted), so exit. */
3692 result
= check_types_worklist (&worklist
, cache
);
3694 CATCH (ex
, RETURN_MASK_ALL
)
3700 bcache_xfree (cache
);
3701 VEC_free (type_equality_entry_d
, worklist
);
3703 /* Rethrow if there was a problem. */
3704 if (except
.reason
< 0)
3705 throw_exception (except
);
3710 /* Allocated status of type TYPE. Return zero if type TYPE is allocated.
3711 Otherwise return one. */
3714 type_not_allocated (const struct type
*type
)
3716 struct dynamic_prop
*prop
= TYPE_ALLOCATED_PROP (type
);
3718 return (prop
&& TYPE_DYN_PROP_KIND (prop
) == PROP_CONST
3719 && !TYPE_DYN_PROP_ADDR (prop
));
3722 /* Associated status of type TYPE. Return zero if type TYPE is associated.
3723 Otherwise return one. */
3726 type_not_associated (const struct type
*type
)
3728 struct dynamic_prop
*prop
= TYPE_ASSOCIATED_PROP (type
);
3730 return (prop
&& TYPE_DYN_PROP_KIND (prop
) == PROP_CONST
3731 && !TYPE_DYN_PROP_ADDR (prop
));
3734 /* Compare one type (PARM) for compatibility with another (ARG).
3735 * PARM is intended to be the parameter type of a function; and
3736 * ARG is the supplied argument's type. This function tests if
3737 * the latter can be converted to the former.
3738 * VALUE is the argument's value or NULL if none (or called recursively)
3740 * Return 0 if they are identical types;
3741 * Otherwise, return an integer which corresponds to how compatible
3742 * PARM is to ARG. The higher the return value, the worse the match.
3743 * Generally the "bad" conversions are all uniformly assigned a 100. */
3746 rank_one_type (struct type
*parm
, struct type
*arg
, struct value
*value
)
3748 struct rank rank
= {0,0};
3750 /* Resolve typedefs */
3751 if (TYPE_CODE (parm
) == TYPE_CODE_TYPEDEF
)
3752 parm
= check_typedef (parm
);
3753 if (TYPE_CODE (arg
) == TYPE_CODE_TYPEDEF
)
3754 arg
= check_typedef (arg
);
3756 if (TYPE_IS_REFERENCE (parm
) && value
!= NULL
)
3758 if (VALUE_LVAL (value
) == not_lval
)
3760 /* Rvalues should preferably bind to rvalue references or const
3761 lvalue references. */
3762 if (TYPE_CODE (parm
) == TYPE_CODE_RVALUE_REF
)
3763 rank
.subrank
= REFERENCE_CONVERSION_RVALUE
;
3764 else if (TYPE_CONST (TYPE_TARGET_TYPE (parm
)))
3765 rank
.subrank
= REFERENCE_CONVERSION_CONST_LVALUE
;
3767 return INCOMPATIBLE_TYPE_BADNESS
;
3768 return sum_ranks (rank
, REFERENCE_CONVERSION_BADNESS
);
3772 /* Lvalues should prefer lvalue overloads. */
3773 if (TYPE_CODE (parm
) == TYPE_CODE_RVALUE_REF
)
3775 rank
.subrank
= REFERENCE_CONVERSION_RVALUE
;
3776 return sum_ranks (rank
, REFERENCE_CONVERSION_BADNESS
);
3781 if (types_equal (parm
, arg
))
3783 struct type
*t1
= parm
;
3784 struct type
*t2
= arg
;
3786 /* For pointers and references, compare target type. */
3787 if (TYPE_CODE (parm
) == TYPE_CODE_PTR
|| TYPE_IS_REFERENCE (parm
))
3789 t1
= TYPE_TARGET_TYPE (parm
);
3790 t2
= TYPE_TARGET_TYPE (arg
);
3793 /* Make sure they are CV equal, too. */
3794 if (TYPE_CONST (t1
) != TYPE_CONST (t2
))
3795 rank
.subrank
|= CV_CONVERSION_CONST
;
3796 if (TYPE_VOLATILE (t1
) != TYPE_VOLATILE (t2
))
3797 rank
.subrank
|= CV_CONVERSION_VOLATILE
;
3798 if (rank
.subrank
!= 0)
3799 return sum_ranks (CV_CONVERSION_BADNESS
, rank
);
3800 return EXACT_MATCH_BADNESS
;
3803 /* See through references, since we can almost make non-references
3806 if (TYPE_IS_REFERENCE (arg
))
3807 return (sum_ranks (rank_one_type (parm
, TYPE_TARGET_TYPE (arg
), NULL
),
3808 REFERENCE_CONVERSION_BADNESS
));
3809 if (TYPE_IS_REFERENCE (parm
))
3810 return (sum_ranks (rank_one_type (TYPE_TARGET_TYPE (parm
), arg
, NULL
),
3811 REFERENCE_CONVERSION_BADNESS
));
3813 /* Debugging only. */
3814 fprintf_filtered (gdb_stderr
,
3815 "------ Arg is %s [%d], parm is %s [%d]\n",
3816 TYPE_NAME (arg
), TYPE_CODE (arg
),
3817 TYPE_NAME (parm
), TYPE_CODE (parm
));
3819 /* x -> y means arg of type x being supplied for parameter of type y. */
3821 switch (TYPE_CODE (parm
))
3824 switch (TYPE_CODE (arg
))
3828 /* Allowed pointer conversions are:
3829 (a) pointer to void-pointer conversion. */
3830 if (TYPE_CODE (TYPE_TARGET_TYPE (parm
)) == TYPE_CODE_VOID
)
3831 return VOID_PTR_CONVERSION_BADNESS
;
3833 /* (b) pointer to ancestor-pointer conversion. */
3834 rank
.subrank
= distance_to_ancestor (TYPE_TARGET_TYPE (parm
),
3835 TYPE_TARGET_TYPE (arg
),
3837 if (rank
.subrank
>= 0)
3838 return sum_ranks (BASE_PTR_CONVERSION_BADNESS
, rank
);
3840 return INCOMPATIBLE_TYPE_BADNESS
;
3841 case TYPE_CODE_ARRAY
:
3843 struct type
*t1
= TYPE_TARGET_TYPE (parm
);
3844 struct type
*t2
= TYPE_TARGET_TYPE (arg
);
3846 if (types_equal (t1
, t2
))
3848 /* Make sure they are CV equal. */
3849 if (TYPE_CONST (t1
) != TYPE_CONST (t2
))
3850 rank
.subrank
|= CV_CONVERSION_CONST
;
3851 if (TYPE_VOLATILE (t1
) != TYPE_VOLATILE (t2
))
3852 rank
.subrank
|= CV_CONVERSION_VOLATILE
;
3853 if (rank
.subrank
!= 0)
3854 return sum_ranks (CV_CONVERSION_BADNESS
, rank
);
3855 return EXACT_MATCH_BADNESS
;
3857 return INCOMPATIBLE_TYPE_BADNESS
;
3859 case TYPE_CODE_FUNC
:
3860 return rank_one_type (TYPE_TARGET_TYPE (parm
), arg
, NULL
);
3862 if (value
!= NULL
&& TYPE_CODE (value_type (value
)) == TYPE_CODE_INT
)
3864 if (value_as_long (value
) == 0)
3866 /* Null pointer conversion: allow it to be cast to a pointer.
3867 [4.10.1 of C++ standard draft n3290] */
3868 return NULL_POINTER_CONVERSION_BADNESS
;
3872 /* If type checking is disabled, allow the conversion. */
3873 if (!strict_type_checking
)
3874 return NS_INTEGER_POINTER_CONVERSION_BADNESS
;
3878 case TYPE_CODE_ENUM
:
3879 case TYPE_CODE_FLAGS
:
3880 case TYPE_CODE_CHAR
:
3881 case TYPE_CODE_RANGE
:
3882 case TYPE_CODE_BOOL
:
3884 return INCOMPATIBLE_TYPE_BADNESS
;
3886 case TYPE_CODE_ARRAY
:
3887 switch (TYPE_CODE (arg
))
3890 case TYPE_CODE_ARRAY
:
3891 return rank_one_type (TYPE_TARGET_TYPE (parm
),
3892 TYPE_TARGET_TYPE (arg
), NULL
);
3894 return INCOMPATIBLE_TYPE_BADNESS
;
3896 case TYPE_CODE_FUNC
:
3897 switch (TYPE_CODE (arg
))
3899 case TYPE_CODE_PTR
: /* funcptr -> func */
3900 return rank_one_type (parm
, TYPE_TARGET_TYPE (arg
), NULL
);
3902 return INCOMPATIBLE_TYPE_BADNESS
;
3905 switch (TYPE_CODE (arg
))
3908 if (TYPE_LENGTH (arg
) == TYPE_LENGTH (parm
))
3910 /* Deal with signed, unsigned, and plain chars and
3911 signed and unsigned ints. */
3912 if (TYPE_NOSIGN (parm
))
3914 /* This case only for character types. */
3915 if (TYPE_NOSIGN (arg
))
3916 return EXACT_MATCH_BADNESS
; /* plain char -> plain char */
3917 else /* signed/unsigned char -> plain char */
3918 return INTEGER_CONVERSION_BADNESS
;
3920 else if (TYPE_UNSIGNED (parm
))
3922 if (TYPE_UNSIGNED (arg
))
3924 /* unsigned int -> unsigned int, or
3925 unsigned long -> unsigned long */
3926 if (integer_types_same_name_p (TYPE_NAME (parm
),
3928 return EXACT_MATCH_BADNESS
;
3929 else if (integer_types_same_name_p (TYPE_NAME (arg
),
3931 && integer_types_same_name_p (TYPE_NAME (parm
),
3933 /* unsigned int -> unsigned long */
3934 return INTEGER_PROMOTION_BADNESS
;
3936 /* unsigned long -> unsigned int */
3937 return INTEGER_CONVERSION_BADNESS
;
3941 if (integer_types_same_name_p (TYPE_NAME (arg
),
3943 && integer_types_same_name_p (TYPE_NAME (parm
),
3945 /* signed long -> unsigned int */
3946 return INTEGER_CONVERSION_BADNESS
;
3948 /* signed int/long -> unsigned int/long */
3949 return INTEGER_CONVERSION_BADNESS
;
3952 else if (!TYPE_NOSIGN (arg
) && !TYPE_UNSIGNED (arg
))
3954 if (integer_types_same_name_p (TYPE_NAME (parm
),
3956 return EXACT_MATCH_BADNESS
;
3957 else if (integer_types_same_name_p (TYPE_NAME (arg
),
3959 && integer_types_same_name_p (TYPE_NAME (parm
),
3961 return INTEGER_PROMOTION_BADNESS
;
3963 return INTEGER_CONVERSION_BADNESS
;
3966 return INTEGER_CONVERSION_BADNESS
;
3968 else if (TYPE_LENGTH (arg
) < TYPE_LENGTH (parm
))
3969 return INTEGER_PROMOTION_BADNESS
;
3971 return INTEGER_CONVERSION_BADNESS
;
3972 case TYPE_CODE_ENUM
:
3973 case TYPE_CODE_FLAGS
:
3974 case TYPE_CODE_CHAR
:
3975 case TYPE_CODE_RANGE
:
3976 case TYPE_CODE_BOOL
:
3977 if (TYPE_DECLARED_CLASS (arg
))
3978 return INCOMPATIBLE_TYPE_BADNESS
;
3979 return INTEGER_PROMOTION_BADNESS
;
3981 return INT_FLOAT_CONVERSION_BADNESS
;
3983 return NS_POINTER_CONVERSION_BADNESS
;
3985 return INCOMPATIBLE_TYPE_BADNESS
;
3988 case TYPE_CODE_ENUM
:
3989 switch (TYPE_CODE (arg
))
3992 case TYPE_CODE_CHAR
:
3993 case TYPE_CODE_RANGE
:
3994 case TYPE_CODE_BOOL
:
3995 case TYPE_CODE_ENUM
:
3996 if (TYPE_DECLARED_CLASS (parm
) || TYPE_DECLARED_CLASS (arg
))
3997 return INCOMPATIBLE_TYPE_BADNESS
;
3998 return INTEGER_CONVERSION_BADNESS
;
4000 return INT_FLOAT_CONVERSION_BADNESS
;
4002 return INCOMPATIBLE_TYPE_BADNESS
;
4005 case TYPE_CODE_CHAR
:
4006 switch (TYPE_CODE (arg
))
4008 case TYPE_CODE_RANGE
:
4009 case TYPE_CODE_BOOL
:
4010 case TYPE_CODE_ENUM
:
4011 if (TYPE_DECLARED_CLASS (arg
))
4012 return INCOMPATIBLE_TYPE_BADNESS
;
4013 return INTEGER_CONVERSION_BADNESS
;
4015 return INT_FLOAT_CONVERSION_BADNESS
;
4017 if (TYPE_LENGTH (arg
) > TYPE_LENGTH (parm
))
4018 return INTEGER_CONVERSION_BADNESS
;
4019 else if (TYPE_LENGTH (arg
) < TYPE_LENGTH (parm
))
4020 return INTEGER_PROMOTION_BADNESS
;
4021 /* >>> !! else fall through !! <<< */
4022 case TYPE_CODE_CHAR
:
4023 /* Deal with signed, unsigned, and plain chars for C++ and
4024 with int cases falling through from previous case. */
4025 if (TYPE_NOSIGN (parm
))
4027 if (TYPE_NOSIGN (arg
))
4028 return EXACT_MATCH_BADNESS
;
4030 return INTEGER_CONVERSION_BADNESS
;
4032 else if (TYPE_UNSIGNED (parm
))
4034 if (TYPE_UNSIGNED (arg
))
4035 return EXACT_MATCH_BADNESS
;
4037 return INTEGER_PROMOTION_BADNESS
;
4039 else if (!TYPE_NOSIGN (arg
) && !TYPE_UNSIGNED (arg
))
4040 return EXACT_MATCH_BADNESS
;
4042 return INTEGER_CONVERSION_BADNESS
;
4044 return INCOMPATIBLE_TYPE_BADNESS
;
4047 case TYPE_CODE_RANGE
:
4048 switch (TYPE_CODE (arg
))
4051 case TYPE_CODE_CHAR
:
4052 case TYPE_CODE_RANGE
:
4053 case TYPE_CODE_BOOL
:
4054 case TYPE_CODE_ENUM
:
4055 return INTEGER_CONVERSION_BADNESS
;
4057 return INT_FLOAT_CONVERSION_BADNESS
;
4059 return INCOMPATIBLE_TYPE_BADNESS
;
4062 case TYPE_CODE_BOOL
:
4063 switch (TYPE_CODE (arg
))
4065 /* n3290 draft, section 4.12.1 (conv.bool):
4067 "A prvalue of arithmetic, unscoped enumeration, pointer, or
4068 pointer to member type can be converted to a prvalue of type
4069 bool. A zero value, null pointer value, or null member pointer
4070 value is converted to false; any other value is converted to
4071 true. A prvalue of type std::nullptr_t can be converted to a
4072 prvalue of type bool; the resulting value is false." */
4074 case TYPE_CODE_CHAR
:
4075 case TYPE_CODE_ENUM
:
4077 case TYPE_CODE_MEMBERPTR
:
4079 return BOOL_CONVERSION_BADNESS
;
4080 case TYPE_CODE_RANGE
:
4081 return INCOMPATIBLE_TYPE_BADNESS
;
4082 case TYPE_CODE_BOOL
:
4083 return EXACT_MATCH_BADNESS
;
4085 return INCOMPATIBLE_TYPE_BADNESS
;
4089 switch (TYPE_CODE (arg
))
4092 if (TYPE_LENGTH (arg
) < TYPE_LENGTH (parm
))
4093 return FLOAT_PROMOTION_BADNESS
;
4094 else if (TYPE_LENGTH (arg
) == TYPE_LENGTH (parm
))
4095 return EXACT_MATCH_BADNESS
;
4097 return FLOAT_CONVERSION_BADNESS
;
4099 case TYPE_CODE_BOOL
:
4100 case TYPE_CODE_ENUM
:
4101 case TYPE_CODE_RANGE
:
4102 case TYPE_CODE_CHAR
:
4103 return INT_FLOAT_CONVERSION_BADNESS
;
4105 return INCOMPATIBLE_TYPE_BADNESS
;
4108 case TYPE_CODE_COMPLEX
:
4109 switch (TYPE_CODE (arg
))
4110 { /* Strictly not needed for C++, but... */
4112 return FLOAT_PROMOTION_BADNESS
;
4113 case TYPE_CODE_COMPLEX
:
4114 return EXACT_MATCH_BADNESS
;
4116 return INCOMPATIBLE_TYPE_BADNESS
;
4119 case TYPE_CODE_STRUCT
:
4120 switch (TYPE_CODE (arg
))
4122 case TYPE_CODE_STRUCT
:
4123 /* Check for derivation */
4124 rank
.subrank
= distance_to_ancestor (parm
, arg
, 0);
4125 if (rank
.subrank
>= 0)
4126 return sum_ranks (BASE_CONVERSION_BADNESS
, rank
);
4127 /* else fall through */
4129 return INCOMPATIBLE_TYPE_BADNESS
;
4132 case TYPE_CODE_UNION
:
4133 switch (TYPE_CODE (arg
))
4135 case TYPE_CODE_UNION
:
4137 return INCOMPATIBLE_TYPE_BADNESS
;
4140 case TYPE_CODE_MEMBERPTR
:
4141 switch (TYPE_CODE (arg
))
4144 return INCOMPATIBLE_TYPE_BADNESS
;
4147 case TYPE_CODE_METHOD
:
4148 switch (TYPE_CODE (arg
))
4152 return INCOMPATIBLE_TYPE_BADNESS
;
4156 switch (TYPE_CODE (arg
))
4160 return INCOMPATIBLE_TYPE_BADNESS
;
4165 switch (TYPE_CODE (arg
))
4169 return rank_one_type (TYPE_FIELD_TYPE (parm
, 0),
4170 TYPE_FIELD_TYPE (arg
, 0), NULL
);
4172 return INCOMPATIBLE_TYPE_BADNESS
;
4175 case TYPE_CODE_VOID
:
4177 return INCOMPATIBLE_TYPE_BADNESS
;
4178 } /* switch (TYPE_CODE (arg)) */
4181 /* End of functions for overload resolution. */
4183 /* Routines to pretty-print types. */
4186 print_bit_vector (B_TYPE
*bits
, int nbits
)
4190 for (bitno
= 0; bitno
< nbits
; bitno
++)
4192 if ((bitno
% 8) == 0)
4194 puts_filtered (" ");
4196 if (B_TST (bits
, bitno
))
4197 printf_filtered (("1"));
4199 printf_filtered (("0"));
4203 /* Note the first arg should be the "this" pointer, we may not want to
4204 include it since we may get into a infinitely recursive
4208 print_args (struct field
*args
, int nargs
, int spaces
)
4214 for (i
= 0; i
< nargs
; i
++)
4216 printfi_filtered (spaces
, "[%d] name '%s'\n", i
,
4217 args
[i
].name
!= NULL
? args
[i
].name
: "<NULL>");
4218 recursive_dump_type (args
[i
].type
, spaces
+ 2);
4224 field_is_static (struct field
*f
)
4226 /* "static" fields are the fields whose location is not relative
4227 to the address of the enclosing struct. It would be nice to
4228 have a dedicated flag that would be set for static fields when
4229 the type is being created. But in practice, checking the field
4230 loc_kind should give us an accurate answer. */
4231 return (FIELD_LOC_KIND (*f
) == FIELD_LOC_KIND_PHYSNAME
4232 || FIELD_LOC_KIND (*f
) == FIELD_LOC_KIND_PHYSADDR
);
4236 dump_fn_fieldlists (struct type
*type
, int spaces
)
4242 printfi_filtered (spaces
, "fn_fieldlists ");
4243 gdb_print_host_address (TYPE_FN_FIELDLISTS (type
), gdb_stdout
);
4244 printf_filtered ("\n");
4245 for (method_idx
= 0; method_idx
< TYPE_NFN_FIELDS (type
); method_idx
++)
4247 f
= TYPE_FN_FIELDLIST1 (type
, method_idx
);
4248 printfi_filtered (spaces
+ 2, "[%d] name '%s' (",
4250 TYPE_FN_FIELDLIST_NAME (type
, method_idx
));
4251 gdb_print_host_address (TYPE_FN_FIELDLIST_NAME (type
, method_idx
),
4253 printf_filtered (_(") length %d\n"),
4254 TYPE_FN_FIELDLIST_LENGTH (type
, method_idx
));
4255 for (overload_idx
= 0;
4256 overload_idx
< TYPE_FN_FIELDLIST_LENGTH (type
, method_idx
);
4259 printfi_filtered (spaces
+ 4, "[%d] physname '%s' (",
4261 TYPE_FN_FIELD_PHYSNAME (f
, overload_idx
));
4262 gdb_print_host_address (TYPE_FN_FIELD_PHYSNAME (f
, overload_idx
),
4264 printf_filtered (")\n");
4265 printfi_filtered (spaces
+ 8, "type ");
4266 gdb_print_host_address (TYPE_FN_FIELD_TYPE (f
, overload_idx
),
4268 printf_filtered ("\n");
4270 recursive_dump_type (TYPE_FN_FIELD_TYPE (f
, overload_idx
),
4273 printfi_filtered (spaces
+ 8, "args ");
4274 gdb_print_host_address (TYPE_FN_FIELD_ARGS (f
, overload_idx
),
4276 printf_filtered ("\n");
4277 print_args (TYPE_FN_FIELD_ARGS (f
, overload_idx
),
4278 TYPE_NFIELDS (TYPE_FN_FIELD_TYPE (f
, overload_idx
)),
4280 printfi_filtered (spaces
+ 8, "fcontext ");
4281 gdb_print_host_address (TYPE_FN_FIELD_FCONTEXT (f
, overload_idx
),
4283 printf_filtered ("\n");
4285 printfi_filtered (spaces
+ 8, "is_const %d\n",
4286 TYPE_FN_FIELD_CONST (f
, overload_idx
));
4287 printfi_filtered (spaces
+ 8, "is_volatile %d\n",
4288 TYPE_FN_FIELD_VOLATILE (f
, overload_idx
));
4289 printfi_filtered (spaces
+ 8, "is_private %d\n",
4290 TYPE_FN_FIELD_PRIVATE (f
, overload_idx
));
4291 printfi_filtered (spaces
+ 8, "is_protected %d\n",
4292 TYPE_FN_FIELD_PROTECTED (f
, overload_idx
));
4293 printfi_filtered (spaces
+ 8, "is_stub %d\n",
4294 TYPE_FN_FIELD_STUB (f
, overload_idx
));
4295 printfi_filtered (spaces
+ 8, "voffset %u\n",
4296 TYPE_FN_FIELD_VOFFSET (f
, overload_idx
));
4302 print_cplus_stuff (struct type
*type
, int spaces
)
4304 printfi_filtered (spaces
, "vptr_fieldno %d\n", TYPE_VPTR_FIELDNO (type
));
4305 printfi_filtered (spaces
, "vptr_basetype ");
4306 gdb_print_host_address (TYPE_VPTR_BASETYPE (type
), gdb_stdout
);
4307 puts_filtered ("\n");
4308 if (TYPE_VPTR_BASETYPE (type
) != NULL
)
4309 recursive_dump_type (TYPE_VPTR_BASETYPE (type
), spaces
+ 2);
4311 printfi_filtered (spaces
, "n_baseclasses %d\n",
4312 TYPE_N_BASECLASSES (type
));
4313 printfi_filtered (spaces
, "nfn_fields %d\n",
4314 TYPE_NFN_FIELDS (type
));
4315 if (TYPE_N_BASECLASSES (type
) > 0)
4317 printfi_filtered (spaces
, "virtual_field_bits (%d bits at *",
4318 TYPE_N_BASECLASSES (type
));
4319 gdb_print_host_address (TYPE_FIELD_VIRTUAL_BITS (type
),
4321 printf_filtered (")");
4323 print_bit_vector (TYPE_FIELD_VIRTUAL_BITS (type
),
4324 TYPE_N_BASECLASSES (type
));
4325 puts_filtered ("\n");
4327 if (TYPE_NFIELDS (type
) > 0)
4329 if (TYPE_FIELD_PRIVATE_BITS (type
) != NULL
)
4331 printfi_filtered (spaces
,
4332 "private_field_bits (%d bits at *",
4333 TYPE_NFIELDS (type
));
4334 gdb_print_host_address (TYPE_FIELD_PRIVATE_BITS (type
),
4336 printf_filtered (")");
4337 print_bit_vector (TYPE_FIELD_PRIVATE_BITS (type
),
4338 TYPE_NFIELDS (type
));
4339 puts_filtered ("\n");
4341 if (TYPE_FIELD_PROTECTED_BITS (type
) != NULL
)
4343 printfi_filtered (spaces
,
4344 "protected_field_bits (%d bits at *",
4345 TYPE_NFIELDS (type
));
4346 gdb_print_host_address (TYPE_FIELD_PROTECTED_BITS (type
),
4348 printf_filtered (")");
4349 print_bit_vector (TYPE_FIELD_PROTECTED_BITS (type
),
4350 TYPE_NFIELDS (type
));
4351 puts_filtered ("\n");
4354 if (TYPE_NFN_FIELDS (type
) > 0)
4356 dump_fn_fieldlists (type
, spaces
);
4360 /* Print the contents of the TYPE's type_specific union, assuming that
4361 its type-specific kind is TYPE_SPECIFIC_GNAT_STUFF. */
4364 print_gnat_stuff (struct type
*type
, int spaces
)
4366 struct type
*descriptive_type
= TYPE_DESCRIPTIVE_TYPE (type
);
4368 if (descriptive_type
== NULL
)
4369 printfi_filtered (spaces
+ 2, "no descriptive type\n");
4372 printfi_filtered (spaces
+ 2, "descriptive type\n");
4373 recursive_dump_type (descriptive_type
, spaces
+ 4);
4377 static struct obstack dont_print_type_obstack
;
4380 recursive_dump_type (struct type
*type
, int spaces
)
4385 obstack_begin (&dont_print_type_obstack
, 0);
4387 if (TYPE_NFIELDS (type
) > 0
4388 || (HAVE_CPLUS_STRUCT (type
) && TYPE_NFN_FIELDS (type
) > 0))
4390 struct type
**first_dont_print
4391 = (struct type
**) obstack_base (&dont_print_type_obstack
);
4393 int i
= (struct type
**)
4394 obstack_next_free (&dont_print_type_obstack
) - first_dont_print
;
4398 if (type
== first_dont_print
[i
])
4400 printfi_filtered (spaces
, "type node ");
4401 gdb_print_host_address (type
, gdb_stdout
);
4402 printf_filtered (_(" <same as already seen type>\n"));
4407 obstack_ptr_grow (&dont_print_type_obstack
, type
);
4410 printfi_filtered (spaces
, "type node ");
4411 gdb_print_host_address (type
, gdb_stdout
);
4412 printf_filtered ("\n");
4413 printfi_filtered (spaces
, "name '%s' (",
4414 TYPE_NAME (type
) ? TYPE_NAME (type
) : "<NULL>");
4415 gdb_print_host_address (TYPE_NAME (type
), gdb_stdout
);
4416 printf_filtered (")\n");
4417 printfi_filtered (spaces
, "tagname '%s' (",
4418 TYPE_TAG_NAME (type
) ? TYPE_TAG_NAME (type
) : "<NULL>");
4419 gdb_print_host_address (TYPE_TAG_NAME (type
), gdb_stdout
);
4420 printf_filtered (")\n");
4421 printfi_filtered (spaces
, "code 0x%x ", TYPE_CODE (type
));
4422 switch (TYPE_CODE (type
))
4424 case TYPE_CODE_UNDEF
:
4425 printf_filtered ("(TYPE_CODE_UNDEF)");
4428 printf_filtered ("(TYPE_CODE_PTR)");
4430 case TYPE_CODE_ARRAY
:
4431 printf_filtered ("(TYPE_CODE_ARRAY)");
4433 case TYPE_CODE_STRUCT
:
4434 printf_filtered ("(TYPE_CODE_STRUCT)");
4436 case TYPE_CODE_UNION
:
4437 printf_filtered ("(TYPE_CODE_UNION)");
4439 case TYPE_CODE_ENUM
:
4440 printf_filtered ("(TYPE_CODE_ENUM)");
4442 case TYPE_CODE_FLAGS
:
4443 printf_filtered ("(TYPE_CODE_FLAGS)");
4445 case TYPE_CODE_FUNC
:
4446 printf_filtered ("(TYPE_CODE_FUNC)");
4449 printf_filtered ("(TYPE_CODE_INT)");
4452 printf_filtered ("(TYPE_CODE_FLT)");
4454 case TYPE_CODE_VOID
:
4455 printf_filtered ("(TYPE_CODE_VOID)");
4458 printf_filtered ("(TYPE_CODE_SET)");
4460 case TYPE_CODE_RANGE
:
4461 printf_filtered ("(TYPE_CODE_RANGE)");
4463 case TYPE_CODE_STRING
:
4464 printf_filtered ("(TYPE_CODE_STRING)");
4466 case TYPE_CODE_ERROR
:
4467 printf_filtered ("(TYPE_CODE_ERROR)");
4469 case TYPE_CODE_MEMBERPTR
:
4470 printf_filtered ("(TYPE_CODE_MEMBERPTR)");
4472 case TYPE_CODE_METHODPTR
:
4473 printf_filtered ("(TYPE_CODE_METHODPTR)");
4475 case TYPE_CODE_METHOD
:
4476 printf_filtered ("(TYPE_CODE_METHOD)");
4479 printf_filtered ("(TYPE_CODE_REF)");
4481 case TYPE_CODE_CHAR
:
4482 printf_filtered ("(TYPE_CODE_CHAR)");
4484 case TYPE_CODE_BOOL
:
4485 printf_filtered ("(TYPE_CODE_BOOL)");
4487 case TYPE_CODE_COMPLEX
:
4488 printf_filtered ("(TYPE_CODE_COMPLEX)");
4490 case TYPE_CODE_TYPEDEF
:
4491 printf_filtered ("(TYPE_CODE_TYPEDEF)");
4493 case TYPE_CODE_NAMESPACE
:
4494 printf_filtered ("(TYPE_CODE_NAMESPACE)");
4497 printf_filtered ("(UNKNOWN TYPE CODE)");
4500 puts_filtered ("\n");
4501 printfi_filtered (spaces
, "length %d\n", TYPE_LENGTH (type
));
4502 if (TYPE_OBJFILE_OWNED (type
))
4504 printfi_filtered (spaces
, "objfile ");
4505 gdb_print_host_address (TYPE_OWNER (type
).objfile
, gdb_stdout
);
4509 printfi_filtered (spaces
, "gdbarch ");
4510 gdb_print_host_address (TYPE_OWNER (type
).gdbarch
, gdb_stdout
);
4512 printf_filtered ("\n");
4513 printfi_filtered (spaces
, "target_type ");
4514 gdb_print_host_address (TYPE_TARGET_TYPE (type
), gdb_stdout
);
4515 printf_filtered ("\n");
4516 if (TYPE_TARGET_TYPE (type
) != NULL
)
4518 recursive_dump_type (TYPE_TARGET_TYPE (type
), spaces
+ 2);
4520 printfi_filtered (spaces
, "pointer_type ");
4521 gdb_print_host_address (TYPE_POINTER_TYPE (type
), gdb_stdout
);
4522 printf_filtered ("\n");
4523 printfi_filtered (spaces
, "reference_type ");
4524 gdb_print_host_address (TYPE_REFERENCE_TYPE (type
), gdb_stdout
);
4525 printf_filtered ("\n");
4526 printfi_filtered (spaces
, "type_chain ");
4527 gdb_print_host_address (TYPE_CHAIN (type
), gdb_stdout
);
4528 printf_filtered ("\n");
4529 printfi_filtered (spaces
, "instance_flags 0x%x",
4530 TYPE_INSTANCE_FLAGS (type
));
4531 if (TYPE_CONST (type
))
4533 puts_filtered (" TYPE_CONST");
4535 if (TYPE_VOLATILE (type
))
4537 puts_filtered (" TYPE_VOLATILE");
4539 if (TYPE_CODE_SPACE (type
))
4541 puts_filtered (" TYPE_CODE_SPACE");
4543 if (TYPE_DATA_SPACE (type
))
4545 puts_filtered (" TYPE_DATA_SPACE");
4547 if (TYPE_ADDRESS_CLASS_1 (type
))
4549 puts_filtered (" TYPE_ADDRESS_CLASS_1");
4551 if (TYPE_ADDRESS_CLASS_2 (type
))
4553 puts_filtered (" TYPE_ADDRESS_CLASS_2");
4555 if (TYPE_RESTRICT (type
))
4557 puts_filtered (" TYPE_RESTRICT");
4559 if (TYPE_ATOMIC (type
))
4561 puts_filtered (" TYPE_ATOMIC");
4563 puts_filtered ("\n");
4565 printfi_filtered (spaces
, "flags");
4566 if (TYPE_UNSIGNED (type
))
4568 puts_filtered (" TYPE_UNSIGNED");
4570 if (TYPE_NOSIGN (type
))
4572 puts_filtered (" TYPE_NOSIGN");
4574 if (TYPE_STUB (type
))
4576 puts_filtered (" TYPE_STUB");
4578 if (TYPE_TARGET_STUB (type
))
4580 puts_filtered (" TYPE_TARGET_STUB");
4582 if (TYPE_PROTOTYPED (type
))
4584 puts_filtered (" TYPE_PROTOTYPED");
4586 if (TYPE_INCOMPLETE (type
))
4588 puts_filtered (" TYPE_INCOMPLETE");
4590 if (TYPE_VARARGS (type
))
4592 puts_filtered (" TYPE_VARARGS");
4594 /* This is used for things like AltiVec registers on ppc. Gcc emits
4595 an attribute for the array type, which tells whether or not we
4596 have a vector, instead of a regular array. */
4597 if (TYPE_VECTOR (type
))
4599 puts_filtered (" TYPE_VECTOR");
4601 if (TYPE_FIXED_INSTANCE (type
))
4603 puts_filtered (" TYPE_FIXED_INSTANCE");
4605 if (TYPE_STUB_SUPPORTED (type
))
4607 puts_filtered (" TYPE_STUB_SUPPORTED");
4609 if (TYPE_NOTTEXT (type
))
4611 puts_filtered (" TYPE_NOTTEXT");
4613 puts_filtered ("\n");
4614 printfi_filtered (spaces
, "nfields %d ", TYPE_NFIELDS (type
));
4615 gdb_print_host_address (TYPE_FIELDS (type
), gdb_stdout
);
4616 puts_filtered ("\n");
4617 for (idx
= 0; idx
< TYPE_NFIELDS (type
); idx
++)
4619 if (TYPE_CODE (type
) == TYPE_CODE_ENUM
)
4620 printfi_filtered (spaces
+ 2,
4621 "[%d] enumval %s type ",
4622 idx
, plongest (TYPE_FIELD_ENUMVAL (type
, idx
)));
4624 printfi_filtered (spaces
+ 2,
4625 "[%d] bitpos %s bitsize %d type ",
4626 idx
, plongest (TYPE_FIELD_BITPOS (type
, idx
)),
4627 TYPE_FIELD_BITSIZE (type
, idx
));
4628 gdb_print_host_address (TYPE_FIELD_TYPE (type
, idx
), gdb_stdout
);
4629 printf_filtered (" name '%s' (",
4630 TYPE_FIELD_NAME (type
, idx
) != NULL
4631 ? TYPE_FIELD_NAME (type
, idx
)
4633 gdb_print_host_address (TYPE_FIELD_NAME (type
, idx
), gdb_stdout
);
4634 printf_filtered (")\n");
4635 if (TYPE_FIELD_TYPE (type
, idx
) != NULL
)
4637 recursive_dump_type (TYPE_FIELD_TYPE (type
, idx
), spaces
+ 4);
4640 if (TYPE_CODE (type
) == TYPE_CODE_RANGE
)
4642 printfi_filtered (spaces
, "low %s%s high %s%s\n",
4643 plongest (TYPE_LOW_BOUND (type
)),
4644 TYPE_LOW_BOUND_UNDEFINED (type
) ? " (undefined)" : "",
4645 plongest (TYPE_HIGH_BOUND (type
)),
4646 TYPE_HIGH_BOUND_UNDEFINED (type
)
4647 ? " (undefined)" : "");
4650 switch (TYPE_SPECIFIC_FIELD (type
))
4652 case TYPE_SPECIFIC_CPLUS_STUFF
:
4653 printfi_filtered (spaces
, "cplus_stuff ");
4654 gdb_print_host_address (TYPE_CPLUS_SPECIFIC (type
),
4656 puts_filtered ("\n");
4657 print_cplus_stuff (type
, spaces
);
4660 case TYPE_SPECIFIC_GNAT_STUFF
:
4661 printfi_filtered (spaces
, "gnat_stuff ");
4662 gdb_print_host_address (TYPE_GNAT_SPECIFIC (type
), gdb_stdout
);
4663 puts_filtered ("\n");
4664 print_gnat_stuff (type
, spaces
);
4667 case TYPE_SPECIFIC_FLOATFORMAT
:
4668 printfi_filtered (spaces
, "floatformat ");
4669 if (TYPE_FLOATFORMAT (type
) == NULL
4670 || TYPE_FLOATFORMAT (type
)->name
== NULL
)
4671 puts_filtered ("(null)");
4673 puts_filtered (TYPE_FLOATFORMAT (type
)->name
);
4674 puts_filtered ("\n");
4677 case TYPE_SPECIFIC_FUNC
:
4678 printfi_filtered (spaces
, "calling_convention %d\n",
4679 TYPE_CALLING_CONVENTION (type
));
4680 /* tail_call_list is not printed. */
4683 case TYPE_SPECIFIC_SELF_TYPE
:
4684 printfi_filtered (spaces
, "self_type ");
4685 gdb_print_host_address (TYPE_SELF_TYPE (type
), gdb_stdout
);
4686 puts_filtered ("\n");
4691 obstack_free (&dont_print_type_obstack
, NULL
);
4694 /* Trivial helpers for the libiberty hash table, for mapping one
4699 struct type
*old
, *newobj
;
4703 type_pair_hash (const void *item
)
4705 const struct type_pair
*pair
= (const struct type_pair
*) item
;
4707 return htab_hash_pointer (pair
->old
);
4711 type_pair_eq (const void *item_lhs
, const void *item_rhs
)
4713 const struct type_pair
*lhs
= (const struct type_pair
*) item_lhs
;
4714 const struct type_pair
*rhs
= (const struct type_pair
*) item_rhs
;
4716 return lhs
->old
== rhs
->old
;
4719 /* Allocate the hash table used by copy_type_recursive to walk
4720 types without duplicates. We use OBJFILE's obstack, because
4721 OBJFILE is about to be deleted. */
4724 create_copied_types_hash (struct objfile
*objfile
)
4726 return htab_create_alloc_ex (1, type_pair_hash
, type_pair_eq
,
4727 NULL
, &objfile
->objfile_obstack
,
4728 hashtab_obstack_allocate
,
4729 dummy_obstack_deallocate
);
4732 /* Recursively copy (deep copy) a dynamic attribute list of a type. */
4734 static struct dynamic_prop_list
*
4735 copy_dynamic_prop_list (struct obstack
*objfile_obstack
,
4736 struct dynamic_prop_list
*list
)
4738 struct dynamic_prop_list
*copy
= list
;
4739 struct dynamic_prop_list
**node_ptr
= ©
;
4741 while (*node_ptr
!= NULL
)
4743 struct dynamic_prop_list
*node_copy
;
4745 node_copy
= ((struct dynamic_prop_list
*)
4746 obstack_copy (objfile_obstack
, *node_ptr
,
4747 sizeof (struct dynamic_prop_list
)));
4748 node_copy
->prop
= (*node_ptr
)->prop
;
4749 *node_ptr
= node_copy
;
4751 node_ptr
= &node_copy
->next
;
4757 /* Recursively copy (deep copy) TYPE, if it is associated with
4758 OBJFILE. Return a new type owned by the gdbarch associated with the type, a
4759 saved type if we have already visited TYPE (using COPIED_TYPES), or TYPE if
4760 it is not associated with OBJFILE. */
4763 copy_type_recursive (struct objfile
*objfile
,
4765 htab_t copied_types
)
4767 struct type_pair
*stored
, pair
;
4769 struct type
*new_type
;
4771 if (! TYPE_OBJFILE_OWNED (type
))
4774 /* This type shouldn't be pointing to any types in other objfiles;
4775 if it did, the type might disappear unexpectedly. */
4776 gdb_assert (TYPE_OBJFILE (type
) == objfile
);
4779 slot
= htab_find_slot (copied_types
, &pair
, INSERT
);
4781 return ((struct type_pair
*) *slot
)->newobj
;
4783 new_type
= alloc_type_arch (get_type_arch (type
));
4785 /* We must add the new type to the hash table immediately, in case
4786 we encounter this type again during a recursive call below. */
4787 stored
= XOBNEW (&objfile
->objfile_obstack
, struct type_pair
);
4789 stored
->newobj
= new_type
;
4792 /* Copy the common fields of types. For the main type, we simply
4793 copy the entire thing and then update specific fields as needed. */
4794 *TYPE_MAIN_TYPE (new_type
) = *TYPE_MAIN_TYPE (type
);
4795 TYPE_OBJFILE_OWNED (new_type
) = 0;
4796 TYPE_OWNER (new_type
).gdbarch
= get_type_arch (type
);
4798 if (TYPE_NAME (type
))
4799 TYPE_NAME (new_type
) = xstrdup (TYPE_NAME (type
));
4800 if (TYPE_TAG_NAME (type
))
4801 TYPE_TAG_NAME (new_type
) = xstrdup (TYPE_TAG_NAME (type
));
4803 TYPE_INSTANCE_FLAGS (new_type
) = TYPE_INSTANCE_FLAGS (type
);
4804 TYPE_LENGTH (new_type
) = TYPE_LENGTH (type
);
4806 /* Copy the fields. */
4807 if (TYPE_NFIELDS (type
))
4811 nfields
= TYPE_NFIELDS (type
);
4812 TYPE_FIELDS (new_type
) = XCNEWVEC (struct field
, nfields
);
4813 for (i
= 0; i
< nfields
; i
++)
4815 TYPE_FIELD_ARTIFICIAL (new_type
, i
) =
4816 TYPE_FIELD_ARTIFICIAL (type
, i
);
4817 TYPE_FIELD_BITSIZE (new_type
, i
) = TYPE_FIELD_BITSIZE (type
, i
);
4818 if (TYPE_FIELD_TYPE (type
, i
))
4819 TYPE_FIELD_TYPE (new_type
, i
)
4820 = copy_type_recursive (objfile
, TYPE_FIELD_TYPE (type
, i
),
4822 if (TYPE_FIELD_NAME (type
, i
))
4823 TYPE_FIELD_NAME (new_type
, i
) =
4824 xstrdup (TYPE_FIELD_NAME (type
, i
));
4825 switch (TYPE_FIELD_LOC_KIND (type
, i
))
4827 case FIELD_LOC_KIND_BITPOS
:
4828 SET_FIELD_BITPOS (TYPE_FIELD (new_type
, i
),
4829 TYPE_FIELD_BITPOS (type
, i
));
4831 case FIELD_LOC_KIND_ENUMVAL
:
4832 SET_FIELD_ENUMVAL (TYPE_FIELD (new_type
, i
),
4833 TYPE_FIELD_ENUMVAL (type
, i
));
4835 case FIELD_LOC_KIND_PHYSADDR
:
4836 SET_FIELD_PHYSADDR (TYPE_FIELD (new_type
, i
),
4837 TYPE_FIELD_STATIC_PHYSADDR (type
, i
));
4839 case FIELD_LOC_KIND_PHYSNAME
:
4840 SET_FIELD_PHYSNAME (TYPE_FIELD (new_type
, i
),
4841 xstrdup (TYPE_FIELD_STATIC_PHYSNAME (type
,
4845 internal_error (__FILE__
, __LINE__
,
4846 _("Unexpected type field location kind: %d"),
4847 TYPE_FIELD_LOC_KIND (type
, i
));
4852 /* For range types, copy the bounds information. */
4853 if (TYPE_CODE (type
) == TYPE_CODE_RANGE
)
4855 TYPE_RANGE_DATA (new_type
) = XNEW (struct range_bounds
);
4856 *TYPE_RANGE_DATA (new_type
) = *TYPE_RANGE_DATA (type
);
4859 if (TYPE_DYN_PROP_LIST (type
) != NULL
)
4860 TYPE_DYN_PROP_LIST (new_type
)
4861 = copy_dynamic_prop_list (&objfile
->objfile_obstack
,
4862 TYPE_DYN_PROP_LIST (type
));
4865 /* Copy pointers to other types. */
4866 if (TYPE_TARGET_TYPE (type
))
4867 TYPE_TARGET_TYPE (new_type
) =
4868 copy_type_recursive (objfile
,
4869 TYPE_TARGET_TYPE (type
),
4872 /* Maybe copy the type_specific bits.
4874 NOTE drow/2005-12-09: We do not copy the C++-specific bits like
4875 base classes and methods. There's no fundamental reason why we
4876 can't, but at the moment it is not needed. */
4878 switch (TYPE_SPECIFIC_FIELD (type
))
4880 case TYPE_SPECIFIC_NONE
:
4882 case TYPE_SPECIFIC_FUNC
:
4883 INIT_FUNC_SPECIFIC (new_type
);
4884 TYPE_CALLING_CONVENTION (new_type
) = TYPE_CALLING_CONVENTION (type
);
4885 TYPE_NO_RETURN (new_type
) = TYPE_NO_RETURN (type
);
4886 TYPE_TAIL_CALL_LIST (new_type
) = NULL
;
4888 case TYPE_SPECIFIC_FLOATFORMAT
:
4889 TYPE_FLOATFORMAT (new_type
) = TYPE_FLOATFORMAT (type
);
4891 case TYPE_SPECIFIC_CPLUS_STUFF
:
4892 INIT_CPLUS_SPECIFIC (new_type
);
4894 case TYPE_SPECIFIC_GNAT_STUFF
:
4895 INIT_GNAT_SPECIFIC (new_type
);
4897 case TYPE_SPECIFIC_SELF_TYPE
:
4898 set_type_self_type (new_type
,
4899 copy_type_recursive (objfile
, TYPE_SELF_TYPE (type
),
4903 gdb_assert_not_reached ("bad type_specific_kind");
4909 /* Make a copy of the given TYPE, except that the pointer & reference
4910 types are not preserved.
4912 This function assumes that the given type has an associated objfile.
4913 This objfile is used to allocate the new type. */
4916 copy_type (const struct type
*type
)
4918 struct type
*new_type
;
4920 gdb_assert (TYPE_OBJFILE_OWNED (type
));
4922 new_type
= alloc_type_copy (type
);
4923 TYPE_INSTANCE_FLAGS (new_type
) = TYPE_INSTANCE_FLAGS (type
);
4924 TYPE_LENGTH (new_type
) = TYPE_LENGTH (type
);
4925 memcpy (TYPE_MAIN_TYPE (new_type
), TYPE_MAIN_TYPE (type
),
4926 sizeof (struct main_type
));
4927 if (TYPE_DYN_PROP_LIST (type
) != NULL
)
4928 TYPE_DYN_PROP_LIST (new_type
)
4929 = copy_dynamic_prop_list (&TYPE_OBJFILE (type
) -> objfile_obstack
,
4930 TYPE_DYN_PROP_LIST (type
));
4935 /* Helper functions to initialize architecture-specific types. */
4937 /* Allocate a type structure associated with GDBARCH and set its
4938 CODE, LENGTH, and NAME fields. */
4941 arch_type (struct gdbarch
*gdbarch
,
4942 enum type_code code
, int bit
, const char *name
)
4946 type
= alloc_type_arch (gdbarch
);
4947 set_type_code (type
, code
);
4948 gdb_assert ((bit
% TARGET_CHAR_BIT
) == 0);
4949 TYPE_LENGTH (type
) = bit
/ TARGET_CHAR_BIT
;
4952 TYPE_NAME (type
) = gdbarch_obstack_strdup (gdbarch
, name
);
4957 /* Allocate a TYPE_CODE_INT type structure associated with GDBARCH.
4958 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
4959 the type's TYPE_UNSIGNED flag. NAME is the type name. */
4962 arch_integer_type (struct gdbarch
*gdbarch
,
4963 int bit
, int unsigned_p
, const char *name
)
4967 t
= arch_type (gdbarch
, TYPE_CODE_INT
, bit
, name
);
4969 TYPE_UNSIGNED (t
) = 1;
4974 /* Allocate a TYPE_CODE_CHAR type structure associated with GDBARCH.
4975 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
4976 the type's TYPE_UNSIGNED flag. NAME is the type name. */
4979 arch_character_type (struct gdbarch
*gdbarch
,
4980 int bit
, int unsigned_p
, const char *name
)
4984 t
= arch_type (gdbarch
, TYPE_CODE_CHAR
, bit
, name
);
4986 TYPE_UNSIGNED (t
) = 1;
4991 /* Allocate a TYPE_CODE_BOOL type structure associated with GDBARCH.
4992 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
4993 the type's TYPE_UNSIGNED flag. NAME is the type name. */
4996 arch_boolean_type (struct gdbarch
*gdbarch
,
4997 int bit
, int unsigned_p
, const char *name
)
5001 t
= arch_type (gdbarch
, TYPE_CODE_BOOL
, bit
, name
);
5003 TYPE_UNSIGNED (t
) = 1;
5008 /* Allocate a TYPE_CODE_FLT type structure associated with GDBARCH.
5009 BIT is the type size in bits; if BIT equals -1, the size is
5010 determined by the floatformat. NAME is the type name. Set the
5011 TYPE_FLOATFORMAT from FLOATFORMATS. */
5014 arch_float_type (struct gdbarch
*gdbarch
,
5015 int bit
, const char *name
,
5016 const struct floatformat
**floatformats
)
5018 const struct floatformat
*fmt
= floatformats
[gdbarch_byte_order (gdbarch
)];
5021 bit
= verify_floatformat (bit
, fmt
);
5022 t
= arch_type (gdbarch
, TYPE_CODE_FLT
, bit
, name
);
5023 TYPE_FLOATFORMAT (t
) = fmt
;
5028 /* Allocate a TYPE_CODE_DECFLOAT type structure associated with GDBARCH.
5029 BIT is the type size in bits. NAME is the type name. */
5032 arch_decfloat_type (struct gdbarch
*gdbarch
, int bit
, const char *name
)
5036 t
= arch_type (gdbarch
, TYPE_CODE_DECFLOAT
, bit
, name
);
5040 /* Allocate a TYPE_CODE_COMPLEX type structure associated with GDBARCH.
5041 NAME is the type name. TARGET_TYPE is the component float type. */
5044 arch_complex_type (struct gdbarch
*gdbarch
,
5045 const char *name
, struct type
*target_type
)
5049 t
= arch_type (gdbarch
, TYPE_CODE_COMPLEX
,
5050 2 * TYPE_LENGTH (target_type
) * TARGET_CHAR_BIT
, name
);
5051 TYPE_TARGET_TYPE (t
) = target_type
;
5055 /* Allocate a TYPE_CODE_PTR type structure associated with GDBARCH.
5056 BIT is the pointer type size in bits. NAME is the type name.
5057 TARGET_TYPE is the pointer target type. Always sets the pointer type's
5058 TYPE_UNSIGNED flag. */
5061 arch_pointer_type (struct gdbarch
*gdbarch
,
5062 int bit
, const char *name
, struct type
*target_type
)
5066 t
= arch_type (gdbarch
, TYPE_CODE_PTR
, bit
, name
);
5067 TYPE_TARGET_TYPE (t
) = target_type
;
5068 TYPE_UNSIGNED (t
) = 1;
5072 /* Allocate a TYPE_CODE_FLAGS type structure associated with GDBARCH.
5073 NAME is the type name. BIT is the size of the flag word in bits. */
5076 arch_flags_type (struct gdbarch
*gdbarch
, const char *name
, int bit
)
5080 type
= arch_type (gdbarch
, TYPE_CODE_FLAGS
, bit
, name
);
5081 TYPE_UNSIGNED (type
) = 1;
5082 TYPE_NFIELDS (type
) = 0;
5083 /* Pre-allocate enough space assuming every field is one bit. */
5085 = (struct field
*) TYPE_ZALLOC (type
, bit
* sizeof (struct field
));
5090 /* Add field to TYPE_CODE_FLAGS type TYPE to indicate the bit at
5091 position BITPOS is called NAME. Pass NAME as "" for fields that
5092 should not be printed. */
5095 append_flags_type_field (struct type
*type
, int start_bitpos
, int nr_bits
,
5096 struct type
*field_type
, const char *name
)
5098 int type_bitsize
= TYPE_LENGTH (type
) * TARGET_CHAR_BIT
;
5099 int field_nr
= TYPE_NFIELDS (type
);
5101 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_FLAGS
);
5102 gdb_assert (TYPE_NFIELDS (type
) + 1 <= type_bitsize
);
5103 gdb_assert (start_bitpos
>= 0 && start_bitpos
< type_bitsize
);
5104 gdb_assert (nr_bits
>= 1 && nr_bits
<= type_bitsize
);
5105 gdb_assert (name
!= NULL
);
5107 TYPE_FIELD_NAME (type
, field_nr
) = xstrdup (name
);
5108 TYPE_FIELD_TYPE (type
, field_nr
) = field_type
;
5109 SET_FIELD_BITPOS (TYPE_FIELD (type
, field_nr
), start_bitpos
);
5110 TYPE_FIELD_BITSIZE (type
, field_nr
) = nr_bits
;
5111 ++TYPE_NFIELDS (type
);
5114 /* Special version of append_flags_type_field to add a flag field.
5115 Add field to TYPE_CODE_FLAGS type TYPE to indicate the bit at
5116 position BITPOS is called NAME. */
5119 append_flags_type_flag (struct type
*type
, int bitpos
, const char *name
)
5121 struct gdbarch
*gdbarch
= get_type_arch (type
);
5123 append_flags_type_field (type
, bitpos
, 1,
5124 builtin_type (gdbarch
)->builtin_bool
,
5128 /* Allocate a TYPE_CODE_STRUCT or TYPE_CODE_UNION type structure (as
5129 specified by CODE) associated with GDBARCH. NAME is the type name. */
5132 arch_composite_type (struct gdbarch
*gdbarch
, const char *name
,
5133 enum type_code code
)
5137 gdb_assert (code
== TYPE_CODE_STRUCT
|| code
== TYPE_CODE_UNION
);
5138 t
= arch_type (gdbarch
, code
, 0, NULL
);
5139 TYPE_TAG_NAME (t
) = name
;
5140 INIT_CPLUS_SPECIFIC (t
);
5144 /* Add new field with name NAME and type FIELD to composite type T.
5145 Do not set the field's position or adjust the type's length;
5146 the caller should do so. Return the new field. */
5149 append_composite_type_field_raw (struct type
*t
, const char *name
,
5154 TYPE_NFIELDS (t
) = TYPE_NFIELDS (t
) + 1;
5155 TYPE_FIELDS (t
) = XRESIZEVEC (struct field
, TYPE_FIELDS (t
),
5157 f
= &(TYPE_FIELDS (t
)[TYPE_NFIELDS (t
) - 1]);
5158 memset (f
, 0, sizeof f
[0]);
5159 FIELD_TYPE (f
[0]) = field
;
5160 FIELD_NAME (f
[0]) = name
;
5164 /* Add new field with name NAME and type FIELD to composite type T.
5165 ALIGNMENT (if non-zero) specifies the minimum field alignment. */
5168 append_composite_type_field_aligned (struct type
*t
, const char *name
,
5169 struct type
*field
, int alignment
)
5171 struct field
*f
= append_composite_type_field_raw (t
, name
, field
);
5173 if (TYPE_CODE (t
) == TYPE_CODE_UNION
)
5175 if (TYPE_LENGTH (t
) < TYPE_LENGTH (field
))
5176 TYPE_LENGTH (t
) = TYPE_LENGTH (field
);
5178 else if (TYPE_CODE (t
) == TYPE_CODE_STRUCT
)
5180 TYPE_LENGTH (t
) = TYPE_LENGTH (t
) + TYPE_LENGTH (field
);
5181 if (TYPE_NFIELDS (t
) > 1)
5183 SET_FIELD_BITPOS (f
[0],
5184 (FIELD_BITPOS (f
[-1])
5185 + (TYPE_LENGTH (FIELD_TYPE (f
[-1]))
5186 * TARGET_CHAR_BIT
)));
5192 alignment
*= TARGET_CHAR_BIT
;
5193 left
= FIELD_BITPOS (f
[0]) % alignment
;
5197 SET_FIELD_BITPOS (f
[0], FIELD_BITPOS (f
[0]) + (alignment
- left
));
5198 TYPE_LENGTH (t
) += (alignment
- left
) / TARGET_CHAR_BIT
;
5205 /* Add new field with name NAME and type FIELD to composite type T. */
5208 append_composite_type_field (struct type
*t
, const char *name
,
5211 append_composite_type_field_aligned (t
, name
, field
, 0);
5214 static struct gdbarch_data
*gdbtypes_data
;
5216 const struct builtin_type
*
5217 builtin_type (struct gdbarch
*gdbarch
)
5219 return (const struct builtin_type
*) gdbarch_data (gdbarch
, gdbtypes_data
);
5223 gdbtypes_post_init (struct gdbarch
*gdbarch
)
5225 struct builtin_type
*builtin_type
5226 = GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct builtin_type
);
5229 builtin_type
->builtin_void
5230 = arch_type (gdbarch
, TYPE_CODE_VOID
, TARGET_CHAR_BIT
, "void");
5231 builtin_type
->builtin_char
5232 = arch_integer_type (gdbarch
, TARGET_CHAR_BIT
,
5233 !gdbarch_char_signed (gdbarch
), "char");
5234 TYPE_NOSIGN (builtin_type
->builtin_char
) = 1;
5235 builtin_type
->builtin_signed_char
5236 = arch_integer_type (gdbarch
, TARGET_CHAR_BIT
,
5238 builtin_type
->builtin_unsigned_char
5239 = arch_integer_type (gdbarch
, TARGET_CHAR_BIT
,
5240 1, "unsigned char");
5241 builtin_type
->builtin_short
5242 = arch_integer_type (gdbarch
, gdbarch_short_bit (gdbarch
),
5244 builtin_type
->builtin_unsigned_short
5245 = arch_integer_type (gdbarch
, gdbarch_short_bit (gdbarch
),
5246 1, "unsigned short");
5247 builtin_type
->builtin_int
5248 = arch_integer_type (gdbarch
, gdbarch_int_bit (gdbarch
),
5250 builtin_type
->builtin_unsigned_int
5251 = arch_integer_type (gdbarch
, gdbarch_int_bit (gdbarch
),
5253 builtin_type
->builtin_long
5254 = arch_integer_type (gdbarch
, gdbarch_long_bit (gdbarch
),
5256 builtin_type
->builtin_unsigned_long
5257 = arch_integer_type (gdbarch
, gdbarch_long_bit (gdbarch
),
5258 1, "unsigned long");
5259 builtin_type
->builtin_long_long
5260 = arch_integer_type (gdbarch
, gdbarch_long_long_bit (gdbarch
),
5262 builtin_type
->builtin_unsigned_long_long
5263 = arch_integer_type (gdbarch
, gdbarch_long_long_bit (gdbarch
),
5264 1, "unsigned long long");
5265 builtin_type
->builtin_float
5266 = arch_float_type (gdbarch
, gdbarch_float_bit (gdbarch
),
5267 "float", gdbarch_float_format (gdbarch
));
5268 builtin_type
->builtin_double
5269 = arch_float_type (gdbarch
, gdbarch_double_bit (gdbarch
),
5270 "double", gdbarch_double_format (gdbarch
));
5271 builtin_type
->builtin_long_double
5272 = arch_float_type (gdbarch
, gdbarch_long_double_bit (gdbarch
),
5273 "long double", gdbarch_long_double_format (gdbarch
));
5274 builtin_type
->builtin_complex
5275 = arch_complex_type (gdbarch
, "complex",
5276 builtin_type
->builtin_float
);
5277 builtin_type
->builtin_double_complex
5278 = arch_complex_type (gdbarch
, "double complex",
5279 builtin_type
->builtin_double
);
5280 builtin_type
->builtin_string
5281 = arch_type (gdbarch
, TYPE_CODE_STRING
, TARGET_CHAR_BIT
, "string");
5282 builtin_type
->builtin_bool
5283 = arch_type (gdbarch
, TYPE_CODE_BOOL
, TARGET_CHAR_BIT
, "bool");
5285 /* The following three are about decimal floating point types, which
5286 are 32-bits, 64-bits and 128-bits respectively. */
5287 builtin_type
->builtin_decfloat
5288 = arch_decfloat_type (gdbarch
, 32, "_Decimal32");
5289 builtin_type
->builtin_decdouble
5290 = arch_decfloat_type (gdbarch
, 64, "_Decimal64");
5291 builtin_type
->builtin_declong
5292 = arch_decfloat_type (gdbarch
, 128, "_Decimal128");
5294 /* "True" character types. */
5295 builtin_type
->builtin_true_char
5296 = arch_character_type (gdbarch
, TARGET_CHAR_BIT
, 0, "true character");
5297 builtin_type
->builtin_true_unsigned_char
5298 = arch_character_type (gdbarch
, TARGET_CHAR_BIT
, 1, "true character");
5300 /* Fixed-size integer types. */
5301 builtin_type
->builtin_int0
5302 = arch_integer_type (gdbarch
, 0, 0, "int0_t");
5303 builtin_type
->builtin_int8
5304 = arch_integer_type (gdbarch
, 8, 0, "int8_t");
5305 builtin_type
->builtin_uint8
5306 = arch_integer_type (gdbarch
, 8, 1, "uint8_t");
5307 builtin_type
->builtin_int16
5308 = arch_integer_type (gdbarch
, 16, 0, "int16_t");
5309 builtin_type
->builtin_uint16
5310 = arch_integer_type (gdbarch
, 16, 1, "uint16_t");
5311 builtin_type
->builtin_int32
5312 = arch_integer_type (gdbarch
, 32, 0, "int32_t");
5313 builtin_type
->builtin_uint32
5314 = arch_integer_type (gdbarch
, 32, 1, "uint32_t");
5315 builtin_type
->builtin_int64
5316 = arch_integer_type (gdbarch
, 64, 0, "int64_t");
5317 builtin_type
->builtin_uint64
5318 = arch_integer_type (gdbarch
, 64, 1, "uint64_t");
5319 builtin_type
->builtin_int128
5320 = arch_integer_type (gdbarch
, 128, 0, "int128_t");
5321 builtin_type
->builtin_uint128
5322 = arch_integer_type (gdbarch
, 128, 1, "uint128_t");
5323 TYPE_INSTANCE_FLAGS (builtin_type
->builtin_int8
) |=
5324 TYPE_INSTANCE_FLAG_NOTTEXT
;
5325 TYPE_INSTANCE_FLAGS (builtin_type
->builtin_uint8
) |=
5326 TYPE_INSTANCE_FLAG_NOTTEXT
;
5328 /* Wide character types. */
5329 builtin_type
->builtin_char16
5330 = arch_integer_type (gdbarch
, 16, 1, "char16_t");
5331 builtin_type
->builtin_char32
5332 = arch_integer_type (gdbarch
, 32, 1, "char32_t");
5333 builtin_type
->builtin_wchar
5334 = arch_integer_type (gdbarch
, gdbarch_wchar_bit (gdbarch
),
5335 !gdbarch_wchar_signed (gdbarch
), "wchar_t");
5337 /* Default data/code pointer types. */
5338 builtin_type
->builtin_data_ptr
5339 = lookup_pointer_type (builtin_type
->builtin_void
);
5340 builtin_type
->builtin_func_ptr
5341 = lookup_pointer_type (lookup_function_type (builtin_type
->builtin_void
));
5342 builtin_type
->builtin_func_func
5343 = lookup_function_type (builtin_type
->builtin_func_ptr
);
5345 /* This type represents a GDB internal function. */
5346 builtin_type
->internal_fn
5347 = arch_type (gdbarch
, TYPE_CODE_INTERNAL_FUNCTION
, 0,
5348 "<internal function>");
5350 /* This type represents an xmethod. */
5351 builtin_type
->xmethod
5352 = arch_type (gdbarch
, TYPE_CODE_XMETHOD
, 0, "<xmethod>");
5354 return builtin_type
;
5357 /* This set of objfile-based types is intended to be used by symbol
5358 readers as basic types. */
5360 static const struct objfile_data
*objfile_type_data
;
5362 const struct objfile_type
*
5363 objfile_type (struct objfile
*objfile
)
5365 struct gdbarch
*gdbarch
;
5366 struct objfile_type
*objfile_type
5367 = (struct objfile_type
*) objfile_data (objfile
, objfile_type_data
);
5370 return objfile_type
;
5372 objfile_type
= OBSTACK_CALLOC (&objfile
->objfile_obstack
,
5373 1, struct objfile_type
);
5375 /* Use the objfile architecture to determine basic type properties. */
5376 gdbarch
= get_objfile_arch (objfile
);
5379 objfile_type
->builtin_void
5380 = init_type (objfile
, TYPE_CODE_VOID
, TARGET_CHAR_BIT
, "void");
5381 objfile_type
->builtin_char
5382 = init_integer_type (objfile
, TARGET_CHAR_BIT
,
5383 !gdbarch_char_signed (gdbarch
), "char");
5384 TYPE_NOSIGN (objfile_type
->builtin_char
) = 1;
5385 objfile_type
->builtin_signed_char
5386 = init_integer_type (objfile
, TARGET_CHAR_BIT
,
5388 objfile_type
->builtin_unsigned_char
5389 = init_integer_type (objfile
, TARGET_CHAR_BIT
,
5390 1, "unsigned char");
5391 objfile_type
->builtin_short
5392 = init_integer_type (objfile
, gdbarch_short_bit (gdbarch
),
5394 objfile_type
->builtin_unsigned_short
5395 = init_integer_type (objfile
, gdbarch_short_bit (gdbarch
),
5396 1, "unsigned short");
5397 objfile_type
->builtin_int
5398 = init_integer_type (objfile
, gdbarch_int_bit (gdbarch
),
5400 objfile_type
->builtin_unsigned_int
5401 = init_integer_type (objfile
, gdbarch_int_bit (gdbarch
),
5403 objfile_type
->builtin_long
5404 = init_integer_type (objfile
, gdbarch_long_bit (gdbarch
),
5406 objfile_type
->builtin_unsigned_long
5407 = init_integer_type (objfile
, gdbarch_long_bit (gdbarch
),
5408 1, "unsigned long");
5409 objfile_type
->builtin_long_long
5410 = init_integer_type (objfile
, gdbarch_long_long_bit (gdbarch
),
5412 objfile_type
->builtin_unsigned_long_long
5413 = init_integer_type (objfile
, gdbarch_long_long_bit (gdbarch
),
5414 1, "unsigned long long");
5415 objfile_type
->builtin_float
5416 = init_float_type (objfile
, gdbarch_float_bit (gdbarch
),
5417 "float", gdbarch_float_format (gdbarch
));
5418 objfile_type
->builtin_double
5419 = init_float_type (objfile
, gdbarch_double_bit (gdbarch
),
5420 "double", gdbarch_double_format (gdbarch
));
5421 objfile_type
->builtin_long_double
5422 = init_float_type (objfile
, gdbarch_long_double_bit (gdbarch
),
5423 "long double", gdbarch_long_double_format (gdbarch
));
5425 /* This type represents a type that was unrecognized in symbol read-in. */
5426 objfile_type
->builtin_error
5427 = init_type (objfile
, TYPE_CODE_ERROR
, 0, "<unknown type>");
5429 /* The following set of types is used for symbols with no
5430 debug information. */
5431 objfile_type
->nodebug_text_symbol
5432 = init_type (objfile
, TYPE_CODE_FUNC
, TARGET_CHAR_BIT
,
5433 "<text variable, no debug info>");
5434 objfile_type
->nodebug_text_gnu_ifunc_symbol
5435 = init_type (objfile
, TYPE_CODE_FUNC
, TARGET_CHAR_BIT
,
5436 "<text gnu-indirect-function variable, no debug info>");
5437 /* Ifunc resolvers return a function address. */
5438 TYPE_TARGET_TYPE (objfile_type
->nodebug_text_gnu_ifunc_symbol
)
5439 = init_integer_type (objfile
, gdbarch_addr_bit (gdbarch
), 1,
5440 "__IFUNC_RESOLVER_RET");
5441 TYPE_GNU_IFUNC (objfile_type
->nodebug_text_gnu_ifunc_symbol
) = 1;
5442 objfile_type
->nodebug_got_plt_symbol
5443 = init_pointer_type (objfile
, gdbarch_addr_bit (gdbarch
),
5444 "<text from jump slot in .got.plt, no debug info>",
5445 objfile_type
->nodebug_text_symbol
);
5446 objfile_type
->nodebug_data_symbol
5447 = init_nodebug_var_type (objfile
, "<data variable, no debug info>");
5448 objfile_type
->nodebug_unknown_symbol
5449 = init_nodebug_var_type (objfile
, "<variable (not text or data), no debug info>");
5450 objfile_type
->nodebug_tls_symbol
5451 = init_nodebug_var_type (objfile
, "<thread local variable, no debug info>");
5453 /* NOTE: on some targets, addresses and pointers are not necessarily
5457 - gdb's `struct type' always describes the target's
5459 - gdb's `struct value' objects should always hold values in
5461 - gdb's CORE_ADDR values are addresses in the unified virtual
5462 address space that the assembler and linker work with. Thus,
5463 since target_read_memory takes a CORE_ADDR as an argument, it
5464 can access any memory on the target, even if the processor has
5465 separate code and data address spaces.
5467 In this context, objfile_type->builtin_core_addr is a bit odd:
5468 it's a target type for a value the target will never see. It's
5469 only used to hold the values of (typeless) linker symbols, which
5470 are indeed in the unified virtual address space. */
5472 objfile_type
->builtin_core_addr
5473 = init_integer_type (objfile
, gdbarch_addr_bit (gdbarch
), 1,
5476 set_objfile_data (objfile
, objfile_type_data
, objfile_type
);
5477 return objfile_type
;
5481 _initialize_gdbtypes (void)
5483 gdbtypes_data
= gdbarch_data_register_post_init (gdbtypes_post_init
);
5484 objfile_type_data
= register_objfile_data ();
5486 add_setshow_zuinteger_cmd ("overload", no_class
, &overload_debug
,
5487 _("Set debugging of C++ overloading."),
5488 _("Show debugging of C++ overloading."),
5489 _("When enabled, ranking of the "
5490 "functions is displayed."),
5492 show_overload_debug
,
5493 &setdebuglist
, &showdebuglist
);
5495 /* Add user knob for controlling resolution of opaque types. */
5496 add_setshow_boolean_cmd ("opaque-type-resolution", class_support
,
5497 &opaque_type_resolution
,
5498 _("Set resolution of opaque struct/class/union"
5499 " types (if set before loading symbols)."),
5500 _("Show resolution of opaque struct/class/union"
5501 " types (if set before loading symbols)."),
5503 show_opaque_type_resolution
,
5504 &setlist
, &showlist
);
5506 /* Add an option to permit non-strict type checking. */
5507 add_setshow_boolean_cmd ("type", class_support
,
5508 &strict_type_checking
,
5509 _("Set strict type checking."),
5510 _("Show strict type checking."),
5512 show_strict_type_checking
,
5513 &setchecklist
, &showchecklist
);