1 /* Support routines for manipulating internal types for GDB.
3 Copyright (C) 1992-2020 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 "dwarf2/loc.h"
41 #include "floatformat.h"
44 /* Initialize BADNESS constants. */
46 const struct rank LENGTH_MISMATCH_BADNESS
= {100,0};
48 const struct rank TOO_FEW_PARAMS_BADNESS
= {100,0};
49 const struct rank INCOMPATIBLE_TYPE_BADNESS
= {100,0};
51 const struct rank EXACT_MATCH_BADNESS
= {0,0};
53 const struct rank INTEGER_PROMOTION_BADNESS
= {1,0};
54 const struct rank FLOAT_PROMOTION_BADNESS
= {1,0};
55 const struct rank BASE_PTR_CONVERSION_BADNESS
= {1,0};
56 const struct rank CV_CONVERSION_BADNESS
= {1, 0};
57 const struct rank INTEGER_CONVERSION_BADNESS
= {2,0};
58 const struct rank FLOAT_CONVERSION_BADNESS
= {2,0};
59 const struct rank INT_FLOAT_CONVERSION_BADNESS
= {2,0};
60 const struct rank VOID_PTR_CONVERSION_BADNESS
= {2,0};
61 const struct rank BOOL_CONVERSION_BADNESS
= {3,0};
62 const struct rank BASE_CONVERSION_BADNESS
= {2,0};
63 const struct rank REFERENCE_CONVERSION_BADNESS
= {2,0};
64 const struct rank REFERENCE_SEE_THROUGH_BADNESS
= {0,1};
65 const struct rank NULL_POINTER_CONVERSION_BADNESS
= {2,0};
66 const struct rank NS_POINTER_CONVERSION_BADNESS
= {10,0};
67 const struct rank NS_INTEGER_POINTER_CONVERSION_BADNESS
= {3,0};
69 /* Floatformat pairs. */
70 const struct floatformat
*floatformats_ieee_half
[BFD_ENDIAN_UNKNOWN
] = {
71 &floatformat_ieee_half_big
,
72 &floatformat_ieee_half_little
74 const struct floatformat
*floatformats_ieee_single
[BFD_ENDIAN_UNKNOWN
] = {
75 &floatformat_ieee_single_big
,
76 &floatformat_ieee_single_little
78 const struct floatformat
*floatformats_ieee_double
[BFD_ENDIAN_UNKNOWN
] = {
79 &floatformat_ieee_double_big
,
80 &floatformat_ieee_double_little
82 const struct floatformat
*floatformats_ieee_double_littlebyte_bigword
[BFD_ENDIAN_UNKNOWN
] = {
83 &floatformat_ieee_double_big
,
84 &floatformat_ieee_double_littlebyte_bigword
86 const struct floatformat
*floatformats_i387_ext
[BFD_ENDIAN_UNKNOWN
] = {
87 &floatformat_i387_ext
,
90 const struct floatformat
*floatformats_m68881_ext
[BFD_ENDIAN_UNKNOWN
] = {
91 &floatformat_m68881_ext
,
92 &floatformat_m68881_ext
94 const struct floatformat
*floatformats_arm_ext
[BFD_ENDIAN_UNKNOWN
] = {
95 &floatformat_arm_ext_big
,
96 &floatformat_arm_ext_littlebyte_bigword
98 const struct floatformat
*floatformats_ia64_spill
[BFD_ENDIAN_UNKNOWN
] = {
99 &floatformat_ia64_spill_big
,
100 &floatformat_ia64_spill_little
102 const struct floatformat
*floatformats_ia64_quad
[BFD_ENDIAN_UNKNOWN
] = {
103 &floatformat_ia64_quad_big
,
104 &floatformat_ia64_quad_little
106 const struct floatformat
*floatformats_vax_f
[BFD_ENDIAN_UNKNOWN
] = {
110 const struct floatformat
*floatformats_vax_d
[BFD_ENDIAN_UNKNOWN
] = {
114 const struct floatformat
*floatformats_ibm_long_double
[BFD_ENDIAN_UNKNOWN
] = {
115 &floatformat_ibm_long_double_big
,
116 &floatformat_ibm_long_double_little
119 /* Should opaque types be resolved? */
121 static bool opaque_type_resolution
= true;
123 /* See gdbtypes.h. */
125 unsigned int overload_debug
= 0;
127 /* A flag to enable strict type checking. */
129 static bool strict_type_checking
= true;
131 /* A function to show whether opaque types are resolved. */
134 show_opaque_type_resolution (struct ui_file
*file
, int from_tty
,
135 struct cmd_list_element
*c
,
138 fprintf_filtered (file
, _("Resolution of opaque struct/class/union types "
139 "(if set before loading symbols) is %s.\n"),
143 /* A function to show whether C++ overload debugging is enabled. */
146 show_overload_debug (struct ui_file
*file
, int from_tty
,
147 struct cmd_list_element
*c
, const char *value
)
149 fprintf_filtered (file
, _("Debugging of C++ overloading is %s.\n"),
153 /* A function to show the status of strict type checking. */
156 show_strict_type_checking (struct ui_file
*file
, int from_tty
,
157 struct cmd_list_element
*c
, const char *value
)
159 fprintf_filtered (file
, _("Strict type checking is %s.\n"), value
);
163 /* Allocate a new OBJFILE-associated type structure and fill it
164 with some defaults. Space for the type structure is allocated
165 on the objfile's objfile_obstack. */
168 alloc_type (struct objfile
*objfile
)
172 gdb_assert (objfile
!= NULL
);
174 /* Alloc the structure and start off with all fields zeroed. */
175 type
= OBSTACK_ZALLOC (&objfile
->objfile_obstack
, struct type
);
176 TYPE_MAIN_TYPE (type
) = OBSTACK_ZALLOC (&objfile
->objfile_obstack
,
178 OBJSTAT (objfile
, n_types
++);
180 TYPE_OBJFILE_OWNED (type
) = 1;
181 TYPE_OWNER (type
).objfile
= objfile
;
183 /* Initialize the fields that might not be zero. */
185 type
->set_code (TYPE_CODE_UNDEF
);
186 TYPE_CHAIN (type
) = type
; /* Chain back to itself. */
191 /* Allocate a new GDBARCH-associated type structure and fill it
192 with some defaults. Space for the type structure is allocated
193 on the obstack associated with GDBARCH. */
196 alloc_type_arch (struct gdbarch
*gdbarch
)
200 gdb_assert (gdbarch
!= NULL
);
202 /* Alloc the structure and start off with all fields zeroed. */
204 type
= GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct type
);
205 TYPE_MAIN_TYPE (type
) = GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct main_type
);
207 TYPE_OBJFILE_OWNED (type
) = 0;
208 TYPE_OWNER (type
).gdbarch
= gdbarch
;
210 /* Initialize the fields that might not be zero. */
212 type
->set_code (TYPE_CODE_UNDEF
);
213 TYPE_CHAIN (type
) = type
; /* Chain back to itself. */
218 /* If TYPE is objfile-associated, allocate a new type structure
219 associated with the same objfile. If TYPE is gdbarch-associated,
220 allocate a new type structure associated with the same gdbarch. */
223 alloc_type_copy (const struct type
*type
)
225 if (TYPE_OBJFILE_OWNED (type
))
226 return alloc_type (TYPE_OWNER (type
).objfile
);
228 return alloc_type_arch (TYPE_OWNER (type
).gdbarch
);
231 /* If TYPE is gdbarch-associated, return that architecture.
232 If TYPE is objfile-associated, return that objfile's architecture. */
235 get_type_arch (const struct type
*type
)
237 struct gdbarch
*arch
;
239 if (TYPE_OBJFILE_OWNED (type
))
240 arch
= TYPE_OWNER (type
).objfile
->arch ();
242 arch
= TYPE_OWNER (type
).gdbarch
;
244 /* The ARCH can be NULL if TYPE is associated with neither an objfile nor
245 a gdbarch, however, this is very rare, and even then, in most cases
246 that get_type_arch is called, we assume that a non-NULL value is
248 gdb_assert (arch
!= NULL
);
252 /* See gdbtypes.h. */
255 get_target_type (struct type
*type
)
259 type
= TYPE_TARGET_TYPE (type
);
261 type
= check_typedef (type
);
267 /* See gdbtypes.h. */
270 type_length_units (struct type
*type
)
272 struct gdbarch
*arch
= get_type_arch (type
);
273 int unit_size
= gdbarch_addressable_memory_unit_size (arch
);
275 return TYPE_LENGTH (type
) / unit_size
;
278 /* Alloc a new type instance structure, fill it with some defaults,
279 and point it at OLDTYPE. Allocate the new type instance from the
280 same place as OLDTYPE. */
283 alloc_type_instance (struct type
*oldtype
)
287 /* Allocate the structure. */
289 if (! TYPE_OBJFILE_OWNED (oldtype
))
290 type
= GDBARCH_OBSTACK_ZALLOC (get_type_arch (oldtype
), struct type
);
292 type
= OBSTACK_ZALLOC (&TYPE_OBJFILE (oldtype
)->objfile_obstack
,
295 TYPE_MAIN_TYPE (type
) = TYPE_MAIN_TYPE (oldtype
);
297 TYPE_CHAIN (type
) = type
; /* Chain back to itself for now. */
302 /* Clear all remnants of the previous type at TYPE, in preparation for
303 replacing it with something else. Preserve owner information. */
306 smash_type (struct type
*type
)
308 int objfile_owned
= TYPE_OBJFILE_OWNED (type
);
309 union type_owner owner
= TYPE_OWNER (type
);
311 memset (TYPE_MAIN_TYPE (type
), 0, sizeof (struct main_type
));
313 /* Restore owner information. */
314 TYPE_OBJFILE_OWNED (type
) = objfile_owned
;
315 TYPE_OWNER (type
) = owner
;
317 /* For now, delete the rings. */
318 TYPE_CHAIN (type
) = type
;
320 /* For now, leave the pointer/reference types alone. */
323 /* Lookup a pointer to a type TYPE. TYPEPTR, if nonzero, points
324 to a pointer to memory where the pointer type should be stored.
325 If *TYPEPTR is zero, update it to point to the pointer type we return.
326 We allocate new memory if needed. */
329 make_pointer_type (struct type
*type
, struct type
**typeptr
)
331 struct type
*ntype
; /* New type */
334 ntype
= TYPE_POINTER_TYPE (type
);
339 return ntype
; /* Don't care about alloc,
340 and have new type. */
341 else if (*typeptr
== 0)
343 *typeptr
= ntype
; /* Tracking alloc, and have new type. */
348 if (typeptr
== 0 || *typeptr
== 0) /* We'll need to allocate one. */
350 ntype
= alloc_type_copy (type
);
354 else /* We have storage, but need to reset it. */
357 chain
= TYPE_CHAIN (ntype
);
359 TYPE_CHAIN (ntype
) = chain
;
362 TYPE_TARGET_TYPE (ntype
) = type
;
363 TYPE_POINTER_TYPE (type
) = ntype
;
365 /* FIXME! Assumes the machine has only one representation for pointers! */
368 = gdbarch_ptr_bit (get_type_arch (type
)) / TARGET_CHAR_BIT
;
369 ntype
->set_code (TYPE_CODE_PTR
);
371 /* Mark pointers as unsigned. The target converts between pointers
372 and addresses (CORE_ADDRs) using gdbarch_pointer_to_address and
373 gdbarch_address_to_pointer. */
374 TYPE_UNSIGNED (ntype
) = 1;
376 /* Update the length of all the other variants of this type. */
377 chain
= TYPE_CHAIN (ntype
);
378 while (chain
!= ntype
)
380 TYPE_LENGTH (chain
) = TYPE_LENGTH (ntype
);
381 chain
= TYPE_CHAIN (chain
);
387 /* Given a type TYPE, return a type of pointers to that type.
388 May need to construct such a type if this is the first use. */
391 lookup_pointer_type (struct type
*type
)
393 return make_pointer_type (type
, (struct type
**) 0);
396 /* Lookup a C++ `reference' to a type TYPE. TYPEPTR, if nonzero,
397 points to a pointer to memory where the reference type should be
398 stored. If *TYPEPTR is zero, update it to point to the reference
399 type we return. We allocate new memory if needed. REFCODE denotes
400 the kind of reference type to lookup (lvalue or rvalue reference). */
403 make_reference_type (struct type
*type
, struct type
**typeptr
,
404 enum type_code refcode
)
406 struct type
*ntype
; /* New type */
407 struct type
**reftype
;
410 gdb_assert (refcode
== TYPE_CODE_REF
|| refcode
== TYPE_CODE_RVALUE_REF
);
412 ntype
= (refcode
== TYPE_CODE_REF
? TYPE_REFERENCE_TYPE (type
)
413 : TYPE_RVALUE_REFERENCE_TYPE (type
));
418 return ntype
; /* Don't care about alloc,
419 and have new type. */
420 else if (*typeptr
== 0)
422 *typeptr
= ntype
; /* Tracking alloc, and have new type. */
427 if (typeptr
== 0 || *typeptr
== 0) /* We'll need to allocate one. */
429 ntype
= alloc_type_copy (type
);
433 else /* We have storage, but need to reset it. */
436 chain
= TYPE_CHAIN (ntype
);
438 TYPE_CHAIN (ntype
) = chain
;
441 TYPE_TARGET_TYPE (ntype
) = type
;
442 reftype
= (refcode
== TYPE_CODE_REF
? &TYPE_REFERENCE_TYPE (type
)
443 : &TYPE_RVALUE_REFERENCE_TYPE (type
));
447 /* FIXME! Assume the machine has only one representation for
448 references, and that it matches the (only) representation for
451 TYPE_LENGTH (ntype
) =
452 gdbarch_ptr_bit (get_type_arch (type
)) / TARGET_CHAR_BIT
;
453 ntype
->set_code (refcode
);
457 /* Update the length of all the other variants of this type. */
458 chain
= TYPE_CHAIN (ntype
);
459 while (chain
!= ntype
)
461 TYPE_LENGTH (chain
) = TYPE_LENGTH (ntype
);
462 chain
= TYPE_CHAIN (chain
);
468 /* Same as above, but caller doesn't care about memory allocation
472 lookup_reference_type (struct type
*type
, enum type_code refcode
)
474 return make_reference_type (type
, (struct type
**) 0, refcode
);
477 /* Lookup the lvalue reference type for the type TYPE. */
480 lookup_lvalue_reference_type (struct type
*type
)
482 return lookup_reference_type (type
, TYPE_CODE_REF
);
485 /* Lookup the rvalue reference type for the type TYPE. */
488 lookup_rvalue_reference_type (struct type
*type
)
490 return lookup_reference_type (type
, TYPE_CODE_RVALUE_REF
);
493 /* Lookup a function type that returns type TYPE. TYPEPTR, if
494 nonzero, points to a pointer to memory where the function type
495 should be stored. If *TYPEPTR is zero, update it to point to the
496 function type we return. We allocate new memory if needed. */
499 make_function_type (struct type
*type
, struct type
**typeptr
)
501 struct type
*ntype
; /* New type */
503 if (typeptr
== 0 || *typeptr
== 0) /* We'll need to allocate one. */
505 ntype
= alloc_type_copy (type
);
509 else /* We have storage, but need to reset it. */
515 TYPE_TARGET_TYPE (ntype
) = type
;
517 TYPE_LENGTH (ntype
) = 1;
518 ntype
->set_code (TYPE_CODE_FUNC
);
520 INIT_FUNC_SPECIFIC (ntype
);
525 /* Given a type TYPE, return a type of functions that return that type.
526 May need to construct such a type if this is the first use. */
529 lookup_function_type (struct type
*type
)
531 return make_function_type (type
, (struct type
**) 0);
534 /* Given a type TYPE and argument types, return the appropriate
535 function type. If the final type in PARAM_TYPES is NULL, make a
539 lookup_function_type_with_arguments (struct type
*type
,
541 struct type
**param_types
)
543 struct type
*fn
= make_function_type (type
, (struct type
**) 0);
548 if (param_types
[nparams
- 1] == NULL
)
551 TYPE_VARARGS (fn
) = 1;
553 else if (check_typedef (param_types
[nparams
- 1])->code ()
557 /* Caller should have ensured this. */
558 gdb_assert (nparams
== 0);
559 TYPE_PROTOTYPED (fn
) = 1;
562 TYPE_PROTOTYPED (fn
) = 1;
565 fn
->set_num_fields (nparams
);
567 ((struct field
*) TYPE_ZALLOC (fn
, nparams
* sizeof (struct field
)));
568 for (i
= 0; i
< nparams
; ++i
)
569 fn
->field (i
).set_type (param_types
[i
]);
574 /* Identify address space identifier by name --
575 return the integer flag defined in gdbtypes.h. */
578 address_space_name_to_int (struct gdbarch
*gdbarch
,
579 const char *space_identifier
)
583 /* Check for known address space delimiters. */
584 if (!strcmp (space_identifier
, "code"))
585 return TYPE_INSTANCE_FLAG_CODE_SPACE
;
586 else if (!strcmp (space_identifier
, "data"))
587 return TYPE_INSTANCE_FLAG_DATA_SPACE
;
588 else if (gdbarch_address_class_name_to_type_flags_p (gdbarch
)
589 && gdbarch_address_class_name_to_type_flags (gdbarch
,
594 error (_("Unknown address space specifier: \"%s\""), space_identifier
);
597 /* Identify address space identifier by integer flag as defined in
598 gdbtypes.h -- return the string version of the adress space name. */
601 address_space_int_to_name (struct gdbarch
*gdbarch
, int space_flag
)
603 if (space_flag
& TYPE_INSTANCE_FLAG_CODE_SPACE
)
605 else if (space_flag
& TYPE_INSTANCE_FLAG_DATA_SPACE
)
607 else if ((space_flag
& TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL
)
608 && gdbarch_address_class_type_flags_to_name_p (gdbarch
))
609 return gdbarch_address_class_type_flags_to_name (gdbarch
, space_flag
);
614 /* Create a new type with instance flags NEW_FLAGS, based on TYPE.
616 If STORAGE is non-NULL, create the new type instance there.
617 STORAGE must be in the same obstack as TYPE. */
620 make_qualified_type (struct type
*type
, int new_flags
,
621 struct type
*storage
)
628 if (TYPE_INSTANCE_FLAGS (ntype
) == new_flags
)
630 ntype
= TYPE_CHAIN (ntype
);
632 while (ntype
!= type
);
634 /* Create a new type instance. */
636 ntype
= alloc_type_instance (type
);
639 /* If STORAGE was provided, it had better be in the same objfile
640 as TYPE. Otherwise, we can't link it into TYPE's cv chain:
641 if one objfile is freed and the other kept, we'd have
642 dangling pointers. */
643 gdb_assert (TYPE_OBJFILE (type
) == TYPE_OBJFILE (storage
));
646 TYPE_MAIN_TYPE (ntype
) = TYPE_MAIN_TYPE (type
);
647 TYPE_CHAIN (ntype
) = ntype
;
650 /* Pointers or references to the original type are not relevant to
652 TYPE_POINTER_TYPE (ntype
) = (struct type
*) 0;
653 TYPE_REFERENCE_TYPE (ntype
) = (struct type
*) 0;
655 /* Chain the new qualified type to the old type. */
656 TYPE_CHAIN (ntype
) = TYPE_CHAIN (type
);
657 TYPE_CHAIN (type
) = ntype
;
659 /* Now set the instance flags and return the new type. */
660 TYPE_INSTANCE_FLAGS (ntype
) = new_flags
;
662 /* Set length of new type to that of the original type. */
663 TYPE_LENGTH (ntype
) = TYPE_LENGTH (type
);
668 /* Make an address-space-delimited variant of a type -- a type that
669 is identical to the one supplied except that it has an address
670 space attribute attached to it (such as "code" or "data").
672 The space attributes "code" and "data" are for Harvard
673 architectures. The address space attributes are for architectures
674 which have alternately sized pointers or pointers with alternate
678 make_type_with_address_space (struct type
*type
, int space_flag
)
680 int new_flags
= ((TYPE_INSTANCE_FLAGS (type
)
681 & ~(TYPE_INSTANCE_FLAG_CODE_SPACE
682 | TYPE_INSTANCE_FLAG_DATA_SPACE
683 | TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL
))
686 return make_qualified_type (type
, new_flags
, NULL
);
689 /* Make a "c-v" variant of a type -- a type that is identical to the
690 one supplied except that it may have const or volatile attributes
691 CNST is a flag for setting the const attribute
692 VOLTL is a flag for setting the volatile attribute
693 TYPE is the base type whose variant we are creating.
695 If TYPEPTR and *TYPEPTR are non-zero, then *TYPEPTR points to
696 storage to hold the new qualified type; *TYPEPTR and TYPE must be
697 in the same objfile. Otherwise, allocate fresh memory for the new
698 type whereever TYPE lives. If TYPEPTR is non-zero, set it to the
699 new type we construct. */
702 make_cv_type (int cnst
, int voltl
,
704 struct type
**typeptr
)
706 struct type
*ntype
; /* New type */
708 int new_flags
= (TYPE_INSTANCE_FLAGS (type
)
709 & ~(TYPE_INSTANCE_FLAG_CONST
710 | TYPE_INSTANCE_FLAG_VOLATILE
));
713 new_flags
|= TYPE_INSTANCE_FLAG_CONST
;
716 new_flags
|= TYPE_INSTANCE_FLAG_VOLATILE
;
718 if (typeptr
&& *typeptr
!= NULL
)
720 /* TYPE and *TYPEPTR must be in the same objfile. We can't have
721 a C-V variant chain that threads across objfiles: if one
722 objfile gets freed, then the other has a broken C-V chain.
724 This code used to try to copy over the main type from TYPE to
725 *TYPEPTR if they were in different objfiles, but that's
726 wrong, too: TYPE may have a field list or member function
727 lists, which refer to types of their own, etc. etc. The
728 whole shebang would need to be copied over recursively; you
729 can't have inter-objfile pointers. The only thing to do is
730 to leave stub types as stub types, and look them up afresh by
731 name each time you encounter them. */
732 gdb_assert (TYPE_OBJFILE (*typeptr
) == TYPE_OBJFILE (type
));
735 ntype
= make_qualified_type (type
, new_flags
,
736 typeptr
? *typeptr
: NULL
);
744 /* Make a 'restrict'-qualified version of TYPE. */
747 make_restrict_type (struct type
*type
)
749 return make_qualified_type (type
,
750 (TYPE_INSTANCE_FLAGS (type
)
751 | TYPE_INSTANCE_FLAG_RESTRICT
),
755 /* Make a type without const, volatile, or restrict. */
758 make_unqualified_type (struct type
*type
)
760 return make_qualified_type (type
,
761 (TYPE_INSTANCE_FLAGS (type
)
762 & ~(TYPE_INSTANCE_FLAG_CONST
763 | TYPE_INSTANCE_FLAG_VOLATILE
764 | TYPE_INSTANCE_FLAG_RESTRICT
)),
768 /* Make a '_Atomic'-qualified version of TYPE. */
771 make_atomic_type (struct type
*type
)
773 return make_qualified_type (type
,
774 (TYPE_INSTANCE_FLAGS (type
)
775 | TYPE_INSTANCE_FLAG_ATOMIC
),
779 /* Replace the contents of ntype with the type *type. This changes the
780 contents, rather than the pointer for TYPE_MAIN_TYPE (ntype); thus
781 the changes are propogated to all types in the TYPE_CHAIN.
783 In order to build recursive types, it's inevitable that we'll need
784 to update types in place --- but this sort of indiscriminate
785 smashing is ugly, and needs to be replaced with something more
786 controlled. TYPE_MAIN_TYPE is a step in this direction; it's not
787 clear if more steps are needed. */
790 replace_type (struct type
*ntype
, struct type
*type
)
794 /* These two types had better be in the same objfile. Otherwise,
795 the assignment of one type's main type structure to the other
796 will produce a type with references to objects (names; field
797 lists; etc.) allocated on an objfile other than its own. */
798 gdb_assert (TYPE_OBJFILE (ntype
) == TYPE_OBJFILE (type
));
800 *TYPE_MAIN_TYPE (ntype
) = *TYPE_MAIN_TYPE (type
);
802 /* The type length is not a part of the main type. Update it for
803 each type on the variant chain. */
807 /* Assert that this element of the chain has no address-class bits
808 set in its flags. Such type variants might have type lengths
809 which are supposed to be different from the non-address-class
810 variants. This assertion shouldn't ever be triggered because
811 symbol readers which do construct address-class variants don't
812 call replace_type(). */
813 gdb_assert (TYPE_ADDRESS_CLASS_ALL (chain
) == 0);
815 TYPE_LENGTH (chain
) = TYPE_LENGTH (type
);
816 chain
= TYPE_CHAIN (chain
);
818 while (ntype
!= chain
);
820 /* Assert that the two types have equivalent instance qualifiers.
821 This should be true for at least all of our debug readers. */
822 gdb_assert (TYPE_INSTANCE_FLAGS (ntype
) == TYPE_INSTANCE_FLAGS (type
));
825 /* Implement direct support for MEMBER_TYPE in GNU C++.
826 May need to construct such a type if this is the first use.
827 The TYPE is the type of the member. The DOMAIN is the type
828 of the aggregate that the member belongs to. */
831 lookup_memberptr_type (struct type
*type
, struct type
*domain
)
835 mtype
= alloc_type_copy (type
);
836 smash_to_memberptr_type (mtype
, domain
, type
);
840 /* Return a pointer-to-method type, for a method of type TO_TYPE. */
843 lookup_methodptr_type (struct type
*to_type
)
847 mtype
= alloc_type_copy (to_type
);
848 smash_to_methodptr_type (mtype
, to_type
);
852 /* Allocate a stub method whose return type is TYPE. This apparently
853 happens for speed of symbol reading, since parsing out the
854 arguments to the method is cpu-intensive, the way we are doing it.
855 So, we will fill in arguments later. This always returns a fresh
859 allocate_stub_method (struct type
*type
)
863 mtype
= alloc_type_copy (type
);
864 mtype
->set_code (TYPE_CODE_METHOD
);
865 TYPE_LENGTH (mtype
) = 1;
866 TYPE_STUB (mtype
) = 1;
867 TYPE_TARGET_TYPE (mtype
) = type
;
868 /* TYPE_SELF_TYPE (mtype) = unknown yet */
872 /* See gdbtypes.h. */
875 operator== (const dynamic_prop
&l
, const dynamic_prop
&r
)
877 if (l
.kind () != r
.kind ())
885 return l
.const_val () == r
.const_val ();
886 case PROP_ADDR_OFFSET
:
889 return l
.baton () == r
.baton ();
890 case PROP_VARIANT_PARTS
:
891 return l
.variant_parts () == r
.variant_parts ();
893 return l
.original_type () == r
.original_type ();
896 gdb_assert_not_reached ("unhandled dynamic_prop kind");
899 /* See gdbtypes.h. */
902 operator== (const range_bounds
&l
, const range_bounds
&r
)
904 #define FIELD_EQ(FIELD) (l.FIELD == r.FIELD)
906 return (FIELD_EQ (low
)
908 && FIELD_EQ (flag_upper_bound_is_count
)
909 && FIELD_EQ (flag_bound_evaluated
)
915 /* Create a range type with a dynamic range from LOW_BOUND to
916 HIGH_BOUND, inclusive. See create_range_type for further details. */
919 create_range_type (struct type
*result_type
, struct type
*index_type
,
920 const struct dynamic_prop
*low_bound
,
921 const struct dynamic_prop
*high_bound
,
924 /* The INDEX_TYPE should be a type capable of holding the upper and lower
925 bounds, as such a zero sized, or void type makes no sense. */
926 gdb_assert (index_type
->code () != TYPE_CODE_VOID
);
927 gdb_assert (TYPE_LENGTH (index_type
) > 0);
929 if (result_type
== NULL
)
930 result_type
= alloc_type_copy (index_type
);
931 result_type
->set_code (TYPE_CODE_RANGE
);
932 TYPE_TARGET_TYPE (result_type
) = index_type
;
933 if (TYPE_STUB (index_type
))
934 TYPE_TARGET_STUB (result_type
) = 1;
936 TYPE_LENGTH (result_type
) = TYPE_LENGTH (check_typedef (index_type
));
939 = (struct range_bounds
*) TYPE_ZALLOC (result_type
, sizeof (range_bounds
));
940 bounds
->low
= *low_bound
;
941 bounds
->high
= *high_bound
;
943 bounds
->stride
.set_const_val (0);
945 result_type
->set_bounds (bounds
);
947 if (low_bound
->kind () == PROP_CONST
&& low_bound
->const_val () >= 0)
948 TYPE_UNSIGNED (result_type
) = 1;
950 /* Ada allows the declaration of range types whose upper bound is
951 less than the lower bound, so checking the lower bound is not
952 enough. Make sure we do not mark a range type whose upper bound
953 is negative as unsigned. */
954 if (high_bound
->kind () == PROP_CONST
&& high_bound
->const_val () < 0)
955 TYPE_UNSIGNED (result_type
) = 0;
957 TYPE_ENDIANITY_NOT_DEFAULT (result_type
)
958 = TYPE_ENDIANITY_NOT_DEFAULT (index_type
);
963 /* See gdbtypes.h. */
966 create_range_type_with_stride (struct type
*result_type
,
967 struct type
*index_type
,
968 const struct dynamic_prop
*low_bound
,
969 const struct dynamic_prop
*high_bound
,
971 const struct dynamic_prop
*stride
,
974 result_type
= create_range_type (result_type
, index_type
, low_bound
,
977 gdb_assert (stride
!= nullptr);
978 result_type
->bounds ()->stride
= *stride
;
979 result_type
->bounds ()->flag_is_byte_stride
= byte_stride_p
;
986 /* Create a range type using either a blank type supplied in
987 RESULT_TYPE, or creating a new type, inheriting the objfile from
990 Indices will be of type INDEX_TYPE, and will range from LOW_BOUND
991 to HIGH_BOUND, inclusive.
993 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
994 sure it is TYPE_CODE_UNDEF before we bash it into a range type? */
997 create_static_range_type (struct type
*result_type
, struct type
*index_type
,
998 LONGEST low_bound
, LONGEST high_bound
)
1000 struct dynamic_prop low
, high
;
1002 low
.set_const_val (low_bound
);
1003 high
.set_const_val (high_bound
);
1005 result_type
= create_range_type (result_type
, index_type
, &low
, &high
, 0);
1010 /* Predicate tests whether BOUNDS are static. Returns 1 if all bounds values
1011 are static, otherwise returns 0. */
1014 has_static_range (const struct range_bounds
*bounds
)
1016 /* If the range doesn't have a defined stride then its stride field will
1017 be initialized to the constant 0. */
1018 return (bounds
->low
.kind () == PROP_CONST
1019 && bounds
->high
.kind () == PROP_CONST
1020 && bounds
->stride
.kind () == PROP_CONST
);
1024 /* Set *LOWP and *HIGHP to the lower and upper bounds of discrete type
1027 Return 1 if type is a range type with two defined, constant bounds.
1028 Else, return 0 if it is discrete (and bounds will fit in LONGEST).
1032 get_discrete_bounds (struct type
*type
, LONGEST
*lowp
, LONGEST
*highp
)
1034 type
= check_typedef (type
);
1035 switch (type
->code ())
1037 case TYPE_CODE_RANGE
:
1038 /* This function currently only works for ranges with two defined,
1040 if (type
->bounds ()->low
.kind () != PROP_CONST
1041 || type
->bounds ()->high
.kind () != PROP_CONST
)
1044 *lowp
= type
->bounds ()->low
.const_val ();
1045 *highp
= type
->bounds ()->high
.const_val ();
1047 if (TYPE_TARGET_TYPE (type
)->code () == TYPE_CODE_ENUM
)
1049 if (!discrete_position (TYPE_TARGET_TYPE (type
), *lowp
, lowp
)
1050 || ! discrete_position (TYPE_TARGET_TYPE (type
), *highp
, highp
))
1054 case TYPE_CODE_ENUM
:
1055 if (type
->num_fields () > 0)
1057 /* The enums may not be sorted by value, so search all
1061 *lowp
= *highp
= TYPE_FIELD_ENUMVAL (type
, 0);
1062 for (i
= 0; i
< type
->num_fields (); i
++)
1064 if (TYPE_FIELD_ENUMVAL (type
, i
) < *lowp
)
1065 *lowp
= TYPE_FIELD_ENUMVAL (type
, i
);
1066 if (TYPE_FIELD_ENUMVAL (type
, i
) > *highp
)
1067 *highp
= TYPE_FIELD_ENUMVAL (type
, i
);
1070 /* Set unsigned indicator if warranted. */
1073 TYPE_UNSIGNED (type
) = 1;
1082 case TYPE_CODE_BOOL
:
1087 if (TYPE_LENGTH (type
) > sizeof (LONGEST
)) /* Too big */
1089 if (!TYPE_UNSIGNED (type
))
1091 *lowp
= -(1 << (TYPE_LENGTH (type
) * TARGET_CHAR_BIT
- 1));
1092 *highp
= -*lowp
- 1;
1096 case TYPE_CODE_CHAR
:
1098 /* This round-about calculation is to avoid shifting by
1099 TYPE_LENGTH (type) * TARGET_CHAR_BIT, which will not work
1100 if TYPE_LENGTH (type) == sizeof (LONGEST). */
1101 *highp
= 1 << (TYPE_LENGTH (type
) * TARGET_CHAR_BIT
- 1);
1102 *highp
= (*highp
- 1) | *highp
;
1109 /* Assuming TYPE is a simple, non-empty array type, compute its upper
1110 and lower bound. Save the low bound into LOW_BOUND if not NULL.
1111 Save the high bound into HIGH_BOUND if not NULL.
1113 Return 1 if the operation was successful. Return zero otherwise,
1114 in which case the values of LOW_BOUND and HIGH_BOUNDS are unmodified. */
1117 get_array_bounds (struct type
*type
, LONGEST
*low_bound
, LONGEST
*high_bound
)
1119 struct type
*index
= type
->index_type ();
1127 res
= get_discrete_bounds (index
, &low
, &high
);
1140 /* Assuming that TYPE is a discrete type and VAL is a valid integer
1141 representation of a value of this type, save the corresponding
1142 position number in POS.
1144 Its differs from VAL only in the case of enumeration types. In
1145 this case, the position number of the value of the first listed
1146 enumeration literal is zero; the position number of the value of
1147 each subsequent enumeration literal is one more than that of its
1148 predecessor in the list.
1150 Return 1 if the operation was successful. Return zero otherwise,
1151 in which case the value of POS is unmodified.
1155 discrete_position (struct type
*type
, LONGEST val
, LONGEST
*pos
)
1157 if (type
->code () == TYPE_CODE_RANGE
)
1158 type
= TYPE_TARGET_TYPE (type
);
1160 if (type
->code () == TYPE_CODE_ENUM
)
1164 for (i
= 0; i
< type
->num_fields (); i
+= 1)
1166 if (val
== TYPE_FIELD_ENUMVAL (type
, i
))
1172 /* Invalid enumeration value. */
1182 /* If the array TYPE has static bounds calculate and update its
1183 size, then return true. Otherwise return false and leave TYPE
1187 update_static_array_size (struct type
*type
)
1189 gdb_assert (type
->code () == TYPE_CODE_ARRAY
);
1191 struct type
*range_type
= type
->index_type ();
1193 if (type
->dyn_prop (DYN_PROP_BYTE_STRIDE
) == nullptr
1194 && has_static_range (range_type
->bounds ())
1195 && (!type_not_associated (type
)
1196 && !type_not_allocated (type
)))
1198 LONGEST low_bound
, high_bound
;
1200 struct type
*element_type
;
1202 /* If the array itself doesn't provide a stride value then take
1203 whatever stride the range provides. Don't update BIT_STRIDE as
1204 we don't want to place the stride value from the range into this
1205 arrays bit size field. */
1206 stride
= TYPE_FIELD_BITSIZE (type
, 0);
1208 stride
= range_type
->bit_stride ();
1210 if (get_discrete_bounds (range_type
, &low_bound
, &high_bound
) < 0)
1211 low_bound
= high_bound
= 0;
1212 element_type
= check_typedef (TYPE_TARGET_TYPE (type
));
1213 /* Be careful when setting the array length. Ada arrays can be
1214 empty arrays with the high_bound being smaller than the low_bound.
1215 In such cases, the array length should be zero. */
1216 if (high_bound
< low_bound
)
1217 TYPE_LENGTH (type
) = 0;
1218 else if (stride
!= 0)
1220 /* Ensure that the type length is always positive, even in the
1221 case where (for example in Fortran) we have a negative
1222 stride. It is possible to have a single element array with a
1223 negative stride in Fortran (this doesn't mean anything
1224 special, it's still just a single element array) so do
1225 consider that case when touching this code. */
1226 LONGEST element_count
= std::abs (high_bound
- low_bound
+ 1);
1228 = ((std::abs (stride
) * element_count
) + 7) / 8;
1231 TYPE_LENGTH (type
) =
1232 TYPE_LENGTH (element_type
) * (high_bound
- low_bound
+ 1);
1240 /* Create an array type using either a blank type supplied in
1241 RESULT_TYPE, or creating a new type, inheriting the objfile from
1244 Elements will be of type ELEMENT_TYPE, the indices will be of type
1247 BYTE_STRIDE_PROP, when not NULL, provides the array's byte stride.
1248 This byte stride property is added to the resulting array type
1249 as a DYN_PROP_BYTE_STRIDE. As a consequence, the BYTE_STRIDE_PROP
1250 argument can only be used to create types that are objfile-owned
1251 (see add_dyn_prop), meaning that either this function must be called
1252 with an objfile-owned RESULT_TYPE, or an objfile-owned RANGE_TYPE.
1254 BIT_STRIDE is taken into account only when BYTE_STRIDE_PROP is NULL.
1255 If BIT_STRIDE is not zero, build a packed array type whose element
1256 size is BIT_STRIDE. Otherwise, ignore this parameter.
1258 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
1259 sure it is TYPE_CODE_UNDEF before we bash it into an array
1263 create_array_type_with_stride (struct type
*result_type
,
1264 struct type
*element_type
,
1265 struct type
*range_type
,
1266 struct dynamic_prop
*byte_stride_prop
,
1267 unsigned int bit_stride
)
1269 if (byte_stride_prop
!= NULL
1270 && byte_stride_prop
->kind () == PROP_CONST
)
1272 /* The byte stride is actually not dynamic. Pretend we were
1273 called with bit_stride set instead of byte_stride_prop.
1274 This will give us the same result type, while avoiding
1275 the need to handle this as a special case. */
1276 bit_stride
= byte_stride_prop
->const_val () * 8;
1277 byte_stride_prop
= NULL
;
1280 if (result_type
== NULL
)
1281 result_type
= alloc_type_copy (range_type
);
1283 result_type
->set_code (TYPE_CODE_ARRAY
);
1284 TYPE_TARGET_TYPE (result_type
) = element_type
;
1286 result_type
->set_num_fields (1);
1287 result_type
->set_fields
1288 ((struct field
*) TYPE_ZALLOC (result_type
, sizeof (struct field
)));
1289 result_type
->set_index_type (range_type
);
1290 if (byte_stride_prop
!= NULL
)
1291 result_type
->add_dyn_prop (DYN_PROP_BYTE_STRIDE
, *byte_stride_prop
);
1292 else if (bit_stride
> 0)
1293 TYPE_FIELD_BITSIZE (result_type
, 0) = bit_stride
;
1295 if (!update_static_array_size (result_type
))
1297 /* This type is dynamic and its length needs to be computed
1298 on demand. In the meantime, avoid leaving the TYPE_LENGTH
1299 undefined by setting it to zero. Although we are not expected
1300 to trust TYPE_LENGTH in this case, setting the size to zero
1301 allows us to avoid allocating objects of random sizes in case
1302 we accidently do. */
1303 TYPE_LENGTH (result_type
) = 0;
1306 /* TYPE_TARGET_STUB will take care of zero length arrays. */
1307 if (TYPE_LENGTH (result_type
) == 0)
1308 TYPE_TARGET_STUB (result_type
) = 1;
1313 /* Same as create_array_type_with_stride but with no bit_stride
1314 (BIT_STRIDE = 0), thus building an unpacked array. */
1317 create_array_type (struct type
*result_type
,
1318 struct type
*element_type
,
1319 struct type
*range_type
)
1321 return create_array_type_with_stride (result_type
, element_type
,
1322 range_type
, NULL
, 0);
1326 lookup_array_range_type (struct type
*element_type
,
1327 LONGEST low_bound
, LONGEST high_bound
)
1329 struct type
*index_type
;
1330 struct type
*range_type
;
1332 if (TYPE_OBJFILE_OWNED (element_type
))
1333 index_type
= objfile_type (TYPE_OWNER (element_type
).objfile
)->builtin_int
;
1335 index_type
= builtin_type (get_type_arch (element_type
))->builtin_int
;
1336 range_type
= create_static_range_type (NULL
, index_type
,
1337 low_bound
, high_bound
);
1339 return create_array_type (NULL
, element_type
, range_type
);
1342 /* Create a string type using either a blank type supplied in
1343 RESULT_TYPE, or creating a new type. String types are similar
1344 enough to array of char types that we can use create_array_type to
1345 build the basic type and then bash it into a string type.
1347 For fixed length strings, the range type contains 0 as the lower
1348 bound and the length of the string minus one as the upper bound.
1350 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
1351 sure it is TYPE_CODE_UNDEF before we bash it into a string
1355 create_string_type (struct type
*result_type
,
1356 struct type
*string_char_type
,
1357 struct type
*range_type
)
1359 result_type
= create_array_type (result_type
,
1362 result_type
->set_code (TYPE_CODE_STRING
);
1367 lookup_string_range_type (struct type
*string_char_type
,
1368 LONGEST low_bound
, LONGEST high_bound
)
1370 struct type
*result_type
;
1372 result_type
= lookup_array_range_type (string_char_type
,
1373 low_bound
, high_bound
);
1374 result_type
->set_code (TYPE_CODE_STRING
);
1379 create_set_type (struct type
*result_type
, struct type
*domain_type
)
1381 if (result_type
== NULL
)
1382 result_type
= alloc_type_copy (domain_type
);
1384 result_type
->set_code (TYPE_CODE_SET
);
1385 result_type
->set_num_fields (1);
1386 result_type
->set_fields
1387 ((struct field
*) TYPE_ZALLOC (result_type
, sizeof (struct field
)));
1389 if (!TYPE_STUB (domain_type
))
1391 LONGEST low_bound
, high_bound
, bit_length
;
1393 if (get_discrete_bounds (domain_type
, &low_bound
, &high_bound
) < 0)
1394 low_bound
= high_bound
= 0;
1395 bit_length
= high_bound
- low_bound
+ 1;
1396 TYPE_LENGTH (result_type
)
1397 = (bit_length
+ TARGET_CHAR_BIT
- 1) / TARGET_CHAR_BIT
;
1399 TYPE_UNSIGNED (result_type
) = 1;
1401 result_type
->field (0).set_type (domain_type
);
1406 /* Convert ARRAY_TYPE to a vector type. This may modify ARRAY_TYPE
1407 and any array types nested inside it. */
1410 make_vector_type (struct type
*array_type
)
1412 struct type
*inner_array
, *elt_type
;
1415 /* Find the innermost array type, in case the array is
1416 multi-dimensional. */
1417 inner_array
= array_type
;
1418 while (TYPE_TARGET_TYPE (inner_array
)->code () == TYPE_CODE_ARRAY
)
1419 inner_array
= TYPE_TARGET_TYPE (inner_array
);
1421 elt_type
= TYPE_TARGET_TYPE (inner_array
);
1422 if (elt_type
->code () == TYPE_CODE_INT
)
1424 flags
= TYPE_INSTANCE_FLAGS (elt_type
) | TYPE_INSTANCE_FLAG_NOTTEXT
;
1425 elt_type
= make_qualified_type (elt_type
, flags
, NULL
);
1426 TYPE_TARGET_TYPE (inner_array
) = elt_type
;
1429 TYPE_VECTOR (array_type
) = 1;
1433 init_vector_type (struct type
*elt_type
, int n
)
1435 struct type
*array_type
;
1437 array_type
= lookup_array_range_type (elt_type
, 0, n
- 1);
1438 make_vector_type (array_type
);
1442 /* Internal routine called by TYPE_SELF_TYPE to return the type that TYPE
1443 belongs to. In c++ this is the class of "this", but TYPE_THIS_TYPE is too
1444 confusing. "self" is a common enough replacement for "this".
1445 TYPE must be one of TYPE_CODE_METHODPTR, TYPE_CODE_MEMBERPTR, or
1446 TYPE_CODE_METHOD. */
1449 internal_type_self_type (struct type
*type
)
1451 switch (type
->code ())
1453 case TYPE_CODE_METHODPTR
:
1454 case TYPE_CODE_MEMBERPTR
:
1455 if (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_NONE
)
1457 gdb_assert (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_SELF_TYPE
);
1458 return TYPE_MAIN_TYPE (type
)->type_specific
.self_type
;
1459 case TYPE_CODE_METHOD
:
1460 if (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_NONE
)
1462 gdb_assert (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_FUNC
);
1463 return TYPE_MAIN_TYPE (type
)->type_specific
.func_stuff
->self_type
;
1465 gdb_assert_not_reached ("bad type");
1469 /* Set the type of the class that TYPE belongs to.
1470 In c++ this is the class of "this".
1471 TYPE must be one of TYPE_CODE_METHODPTR, TYPE_CODE_MEMBERPTR, or
1472 TYPE_CODE_METHOD. */
1475 set_type_self_type (struct type
*type
, struct type
*self_type
)
1477 switch (type
->code ())
1479 case TYPE_CODE_METHODPTR
:
1480 case TYPE_CODE_MEMBERPTR
:
1481 if (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_NONE
)
1482 TYPE_SPECIFIC_FIELD (type
) = TYPE_SPECIFIC_SELF_TYPE
;
1483 gdb_assert (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_SELF_TYPE
);
1484 TYPE_MAIN_TYPE (type
)->type_specific
.self_type
= self_type
;
1486 case TYPE_CODE_METHOD
:
1487 if (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_NONE
)
1488 INIT_FUNC_SPECIFIC (type
);
1489 gdb_assert (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_FUNC
);
1490 TYPE_MAIN_TYPE (type
)->type_specific
.func_stuff
->self_type
= self_type
;
1493 gdb_assert_not_reached ("bad type");
1497 /* Smash TYPE to be a type of pointers to members of SELF_TYPE with type
1498 TO_TYPE. A member pointer is a wierd thing -- it amounts to a
1499 typed offset into a struct, e.g. "an int at offset 8". A MEMBER
1500 TYPE doesn't include the offset (that's the value of the MEMBER
1501 itself), but does include the structure type into which it points
1504 When "smashing" the type, we preserve the objfile that the old type
1505 pointed to, since we aren't changing where the type is actually
1509 smash_to_memberptr_type (struct type
*type
, struct type
*self_type
,
1510 struct type
*to_type
)
1513 type
->set_code (TYPE_CODE_MEMBERPTR
);
1514 TYPE_TARGET_TYPE (type
) = to_type
;
1515 set_type_self_type (type
, self_type
);
1516 /* Assume that a data member pointer is the same size as a normal
1519 = gdbarch_ptr_bit (get_type_arch (to_type
)) / TARGET_CHAR_BIT
;
1522 /* Smash TYPE to be a type of pointer to methods type TO_TYPE.
1524 When "smashing" the type, we preserve the objfile that the old type
1525 pointed to, since we aren't changing where the type is actually
1529 smash_to_methodptr_type (struct type
*type
, struct type
*to_type
)
1532 type
->set_code (TYPE_CODE_METHODPTR
);
1533 TYPE_TARGET_TYPE (type
) = to_type
;
1534 set_type_self_type (type
, TYPE_SELF_TYPE (to_type
));
1535 TYPE_LENGTH (type
) = cplus_method_ptr_size (to_type
);
1538 /* Smash TYPE to be a type of method of SELF_TYPE with type TO_TYPE.
1539 METHOD just means `function that gets an extra "this" argument'.
1541 When "smashing" the type, we preserve the objfile that the old type
1542 pointed to, since we aren't changing where the type is actually
1546 smash_to_method_type (struct type
*type
, struct type
*self_type
,
1547 struct type
*to_type
, struct field
*args
,
1548 int nargs
, int varargs
)
1551 type
->set_code (TYPE_CODE_METHOD
);
1552 TYPE_TARGET_TYPE (type
) = to_type
;
1553 set_type_self_type (type
, self_type
);
1554 type
->set_fields (args
);
1555 type
->set_num_fields (nargs
);
1557 TYPE_VARARGS (type
) = 1;
1558 TYPE_LENGTH (type
) = 1; /* In practice, this is never needed. */
1561 /* A wrapper of TYPE_NAME which calls error if the type is anonymous.
1562 Since GCC PR debug/47510 DWARF provides associated information to detect the
1563 anonymous class linkage name from its typedef.
1565 Parameter TYPE should not yet have CHECK_TYPEDEF applied, this function will
1569 type_name_or_error (struct type
*type
)
1571 struct type
*saved_type
= type
;
1573 struct objfile
*objfile
;
1575 type
= check_typedef (type
);
1577 name
= type
->name ();
1581 name
= saved_type
->name ();
1582 objfile
= TYPE_OBJFILE (saved_type
);
1583 error (_("Invalid anonymous type %s [in module %s], GCC PR debug/47510 bug?"),
1584 name
? name
: "<anonymous>",
1585 objfile
? objfile_name (objfile
) : "<arch>");
1588 /* Lookup a typedef or primitive type named NAME, visible in lexical
1589 block BLOCK. If NOERR is nonzero, return zero if NAME is not
1590 suitably defined. */
1593 lookup_typename (const struct language_defn
*language
,
1595 const struct block
*block
, int noerr
)
1599 sym
= lookup_symbol_in_language (name
, block
, VAR_DOMAIN
,
1600 language
->la_language
, NULL
).symbol
;
1601 if (sym
!= NULL
&& SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
1602 return SYMBOL_TYPE (sym
);
1606 error (_("No type named %s."), name
);
1610 lookup_unsigned_typename (const struct language_defn
*language
,
1613 char *uns
= (char *) alloca (strlen (name
) + 10);
1615 strcpy (uns
, "unsigned ");
1616 strcpy (uns
+ 9, name
);
1617 return lookup_typename (language
, uns
, NULL
, 0);
1621 lookup_signed_typename (const struct language_defn
*language
, const char *name
)
1624 char *uns
= (char *) alloca (strlen (name
) + 8);
1626 strcpy (uns
, "signed ");
1627 strcpy (uns
+ 7, name
);
1628 t
= lookup_typename (language
, uns
, NULL
, 1);
1629 /* If we don't find "signed FOO" just try again with plain "FOO". */
1632 return lookup_typename (language
, name
, NULL
, 0);
1635 /* Lookup a structure type named "struct NAME",
1636 visible in lexical block BLOCK. */
1639 lookup_struct (const char *name
, const struct block
*block
)
1643 sym
= lookup_symbol (name
, block
, STRUCT_DOMAIN
, 0).symbol
;
1647 error (_("No struct type named %s."), name
);
1649 if (SYMBOL_TYPE (sym
)->code () != TYPE_CODE_STRUCT
)
1651 error (_("This context has class, union or enum %s, not a struct."),
1654 return (SYMBOL_TYPE (sym
));
1657 /* Lookup a union type named "union NAME",
1658 visible in lexical block BLOCK. */
1661 lookup_union (const char *name
, const struct block
*block
)
1666 sym
= lookup_symbol (name
, block
, STRUCT_DOMAIN
, 0).symbol
;
1669 error (_("No union type named %s."), name
);
1671 t
= SYMBOL_TYPE (sym
);
1673 if (t
->code () == TYPE_CODE_UNION
)
1676 /* If we get here, it's not a union. */
1677 error (_("This context has class, struct or enum %s, not a union."),
1681 /* Lookup an enum type named "enum NAME",
1682 visible in lexical block BLOCK. */
1685 lookup_enum (const char *name
, const struct block
*block
)
1689 sym
= lookup_symbol (name
, block
, STRUCT_DOMAIN
, 0).symbol
;
1692 error (_("No enum type named %s."), name
);
1694 if (SYMBOL_TYPE (sym
)->code () != TYPE_CODE_ENUM
)
1696 error (_("This context has class, struct or union %s, not an enum."),
1699 return (SYMBOL_TYPE (sym
));
1702 /* Lookup a template type named "template NAME<TYPE>",
1703 visible in lexical block BLOCK. */
1706 lookup_template_type (const char *name
, struct type
*type
,
1707 const struct block
*block
)
1710 char *nam
= (char *)
1711 alloca (strlen (name
) + strlen (type
->name ()) + 4);
1715 strcat (nam
, type
->name ());
1716 strcat (nam
, " >"); /* FIXME, extra space still introduced in gcc? */
1718 sym
= lookup_symbol (nam
, block
, VAR_DOMAIN
, 0).symbol
;
1722 error (_("No template type named %s."), name
);
1724 if (SYMBOL_TYPE (sym
)->code () != TYPE_CODE_STRUCT
)
1726 error (_("This context has class, union or enum %s, not a struct."),
1729 return (SYMBOL_TYPE (sym
));
1732 /* See gdbtypes.h. */
1735 lookup_struct_elt (struct type
*type
, const char *name
, int noerr
)
1741 type
= check_typedef (type
);
1742 if (type
->code () != TYPE_CODE_PTR
1743 && type
->code () != TYPE_CODE_REF
)
1745 type
= TYPE_TARGET_TYPE (type
);
1748 if (type
->code () != TYPE_CODE_STRUCT
1749 && type
->code () != TYPE_CODE_UNION
)
1751 std::string type_name
= type_to_string (type
);
1752 error (_("Type %s is not a structure or union type."),
1753 type_name
.c_str ());
1756 for (i
= type
->num_fields () - 1; i
>= TYPE_N_BASECLASSES (type
); i
--)
1758 const char *t_field_name
= TYPE_FIELD_NAME (type
, i
);
1760 if (t_field_name
&& (strcmp_iw (t_field_name
, name
) == 0))
1762 return {&type
->field (i
), TYPE_FIELD_BITPOS (type
, i
)};
1764 else if (!t_field_name
|| *t_field_name
== '\0')
1767 = lookup_struct_elt (type
->field (i
).type (), name
, 1);
1768 if (elt
.field
!= NULL
)
1770 elt
.offset
+= TYPE_FIELD_BITPOS (type
, i
);
1776 /* OK, it's not in this class. Recursively check the baseclasses. */
1777 for (i
= TYPE_N_BASECLASSES (type
) - 1; i
>= 0; i
--)
1779 struct_elt elt
= lookup_struct_elt (TYPE_BASECLASS (type
, i
), name
, 1);
1780 if (elt
.field
!= NULL
)
1785 return {nullptr, 0};
1787 std::string type_name
= type_to_string (type
);
1788 error (_("Type %s has no component named %s."), type_name
.c_str (), name
);
1791 /* See gdbtypes.h. */
1794 lookup_struct_elt_type (struct type
*type
, const char *name
, int noerr
)
1796 struct_elt elt
= lookup_struct_elt (type
, name
, noerr
);
1797 if (elt
.field
!= NULL
)
1798 return elt
.field
->type ();
1803 /* Store in *MAX the largest number representable by unsigned integer type
1807 get_unsigned_type_max (struct type
*type
, ULONGEST
*max
)
1811 type
= check_typedef (type
);
1812 gdb_assert (type
->code () == TYPE_CODE_INT
&& TYPE_UNSIGNED (type
));
1813 gdb_assert (TYPE_LENGTH (type
) <= sizeof (ULONGEST
));
1815 /* Written this way to avoid overflow. */
1816 n
= TYPE_LENGTH (type
) * TARGET_CHAR_BIT
;
1817 *max
= ((((ULONGEST
) 1 << (n
- 1)) - 1) << 1) | 1;
1820 /* Store in *MIN, *MAX the smallest and largest numbers representable by
1821 signed integer type TYPE. */
1824 get_signed_type_minmax (struct type
*type
, LONGEST
*min
, LONGEST
*max
)
1828 type
= check_typedef (type
);
1829 gdb_assert (type
->code () == TYPE_CODE_INT
&& !TYPE_UNSIGNED (type
));
1830 gdb_assert (TYPE_LENGTH (type
) <= sizeof (LONGEST
));
1832 n
= TYPE_LENGTH (type
) * TARGET_CHAR_BIT
;
1833 *min
= -((ULONGEST
) 1 << (n
- 1));
1834 *max
= ((ULONGEST
) 1 << (n
- 1)) - 1;
1837 /* Internal routine called by TYPE_VPTR_FIELDNO to return the value of
1838 cplus_stuff.vptr_fieldno.
1840 cplus_stuff is initialized to cplus_struct_default which does not
1841 set vptr_fieldno to -1 for portability reasons (IWBN to use C99
1842 designated initializers). We cope with that here. */
1845 internal_type_vptr_fieldno (struct type
*type
)
1847 type
= check_typedef (type
);
1848 gdb_assert (type
->code () == TYPE_CODE_STRUCT
1849 || type
->code () == TYPE_CODE_UNION
);
1850 if (!HAVE_CPLUS_STRUCT (type
))
1852 return TYPE_RAW_CPLUS_SPECIFIC (type
)->vptr_fieldno
;
1855 /* Set the value of cplus_stuff.vptr_fieldno. */
1858 set_type_vptr_fieldno (struct type
*type
, int fieldno
)
1860 type
= check_typedef (type
);
1861 gdb_assert (type
->code () == TYPE_CODE_STRUCT
1862 || type
->code () == TYPE_CODE_UNION
);
1863 if (!HAVE_CPLUS_STRUCT (type
))
1864 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
1865 TYPE_RAW_CPLUS_SPECIFIC (type
)->vptr_fieldno
= fieldno
;
1868 /* Internal routine called by TYPE_VPTR_BASETYPE to return the value of
1869 cplus_stuff.vptr_basetype. */
1872 internal_type_vptr_basetype (struct type
*type
)
1874 type
= check_typedef (type
);
1875 gdb_assert (type
->code () == TYPE_CODE_STRUCT
1876 || type
->code () == TYPE_CODE_UNION
);
1877 gdb_assert (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_CPLUS_STUFF
);
1878 return TYPE_RAW_CPLUS_SPECIFIC (type
)->vptr_basetype
;
1881 /* Set the value of cplus_stuff.vptr_basetype. */
1884 set_type_vptr_basetype (struct type
*type
, struct type
*basetype
)
1886 type
= check_typedef (type
);
1887 gdb_assert (type
->code () == TYPE_CODE_STRUCT
1888 || type
->code () == TYPE_CODE_UNION
);
1889 if (!HAVE_CPLUS_STRUCT (type
))
1890 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
1891 TYPE_RAW_CPLUS_SPECIFIC (type
)->vptr_basetype
= basetype
;
1894 /* Lookup the vptr basetype/fieldno values for TYPE.
1895 If found store vptr_basetype in *BASETYPEP if non-NULL, and return
1896 vptr_fieldno. Also, if found and basetype is from the same objfile,
1898 If not found, return -1 and ignore BASETYPEP.
1899 Callers should be aware that in some cases (for example,
1900 the type or one of its baseclasses is a stub type and we are
1901 debugging a .o file, or the compiler uses DWARF-2 and is not GCC),
1902 this function will not be able to find the
1903 virtual function table pointer, and vptr_fieldno will remain -1 and
1904 vptr_basetype will remain NULL or incomplete. */
1907 get_vptr_fieldno (struct type
*type
, struct type
**basetypep
)
1909 type
= check_typedef (type
);
1911 if (TYPE_VPTR_FIELDNO (type
) < 0)
1915 /* We must start at zero in case the first (and only) baseclass
1916 is virtual (and hence we cannot share the table pointer). */
1917 for (i
= 0; i
< TYPE_N_BASECLASSES (type
); i
++)
1919 struct type
*baseclass
= check_typedef (TYPE_BASECLASS (type
, i
));
1921 struct type
*basetype
;
1923 fieldno
= get_vptr_fieldno (baseclass
, &basetype
);
1926 /* If the type comes from a different objfile we can't cache
1927 it, it may have a different lifetime. PR 2384 */
1928 if (TYPE_OBJFILE (type
) == TYPE_OBJFILE (basetype
))
1930 set_type_vptr_fieldno (type
, fieldno
);
1931 set_type_vptr_basetype (type
, basetype
);
1934 *basetypep
= basetype
;
1945 *basetypep
= TYPE_VPTR_BASETYPE (type
);
1946 return TYPE_VPTR_FIELDNO (type
);
1951 stub_noname_complaint (void)
1953 complaint (_("stub type has NULL name"));
1956 /* Return nonzero if TYPE has a DYN_PROP_BYTE_STRIDE dynamic property
1957 attached to it, and that property has a non-constant value. */
1960 array_type_has_dynamic_stride (struct type
*type
)
1962 struct dynamic_prop
*prop
= type
->dyn_prop (DYN_PROP_BYTE_STRIDE
);
1964 return (prop
!= NULL
&& prop
->kind () != PROP_CONST
);
1967 /* Worker for is_dynamic_type. */
1970 is_dynamic_type_internal (struct type
*type
, int top_level
)
1972 type
= check_typedef (type
);
1974 /* We only want to recognize references at the outermost level. */
1975 if (top_level
&& type
->code () == TYPE_CODE_REF
)
1976 type
= check_typedef (TYPE_TARGET_TYPE (type
));
1978 /* Types that have a dynamic TYPE_DATA_LOCATION are considered
1979 dynamic, even if the type itself is statically defined.
1980 From a user's point of view, this may appear counter-intuitive;
1981 but it makes sense in this context, because the point is to determine
1982 whether any part of the type needs to be resolved before it can
1984 if (TYPE_DATA_LOCATION (type
) != NULL
1985 && (TYPE_DATA_LOCATION_KIND (type
) == PROP_LOCEXPR
1986 || TYPE_DATA_LOCATION_KIND (type
) == PROP_LOCLIST
))
1989 if (TYPE_ASSOCIATED_PROP (type
))
1992 if (TYPE_ALLOCATED_PROP (type
))
1995 struct dynamic_prop
*prop
= type
->dyn_prop (DYN_PROP_VARIANT_PARTS
);
1996 if (prop
!= nullptr && prop
->kind () != PROP_TYPE
)
1999 if (TYPE_HAS_DYNAMIC_LENGTH (type
))
2002 switch (type
->code ())
2004 case TYPE_CODE_RANGE
:
2006 /* A range type is obviously dynamic if it has at least one
2007 dynamic bound. But also consider the range type to be
2008 dynamic when its subtype is dynamic, even if the bounds
2009 of the range type are static. It allows us to assume that
2010 the subtype of a static range type is also static. */
2011 return (!has_static_range (type
->bounds ())
2012 || is_dynamic_type_internal (TYPE_TARGET_TYPE (type
), 0));
2015 case TYPE_CODE_STRING
:
2016 /* Strings are very much like an array of characters, and can be
2017 treated as one here. */
2018 case TYPE_CODE_ARRAY
:
2020 gdb_assert (type
->num_fields () == 1);
2022 /* The array is dynamic if either the bounds are dynamic... */
2023 if (is_dynamic_type_internal (type
->index_type (), 0))
2025 /* ... or the elements it contains have a dynamic contents... */
2026 if (is_dynamic_type_internal (TYPE_TARGET_TYPE (type
), 0))
2028 /* ... or if it has a dynamic stride... */
2029 if (array_type_has_dynamic_stride (type
))
2034 case TYPE_CODE_STRUCT
:
2035 case TYPE_CODE_UNION
:
2039 bool is_cplus
= HAVE_CPLUS_STRUCT (type
);
2041 for (i
= 0; i
< type
->num_fields (); ++i
)
2043 /* Static fields can be ignored here. */
2044 if (field_is_static (&type
->field (i
)))
2046 /* If the field has dynamic type, then so does TYPE. */
2047 if (is_dynamic_type_internal (type
->field (i
).type (), 0))
2049 /* If the field is at a fixed offset, then it is not
2051 if (TYPE_FIELD_LOC_KIND (type
, i
) != FIELD_LOC_KIND_DWARF_BLOCK
)
2053 /* Do not consider C++ virtual base types to be dynamic
2054 due to the field's offset being dynamic; these are
2055 handled via other means. */
2056 if (is_cplus
&& BASETYPE_VIA_VIRTUAL (type
, i
))
2067 /* See gdbtypes.h. */
2070 is_dynamic_type (struct type
*type
)
2072 return is_dynamic_type_internal (type
, 1);
2075 static struct type
*resolve_dynamic_type_internal
2076 (struct type
*type
, struct property_addr_info
*addr_stack
, int top_level
);
2078 /* Given a dynamic range type (dyn_range_type) and a stack of
2079 struct property_addr_info elements, return a static version
2082 static struct type
*
2083 resolve_dynamic_range (struct type
*dyn_range_type
,
2084 struct property_addr_info
*addr_stack
)
2087 struct type
*static_range_type
, *static_target_type
;
2088 struct dynamic_prop low_bound
, high_bound
, stride
;
2090 gdb_assert (dyn_range_type
->code () == TYPE_CODE_RANGE
);
2092 const struct dynamic_prop
*prop
= &dyn_range_type
->bounds ()->low
;
2093 if (dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2094 low_bound
.set_const_val (value
);
2096 low_bound
.set_undefined ();
2098 prop
= &dyn_range_type
->bounds ()->high
;
2099 if (dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2101 high_bound
.set_const_val (value
);
2103 if (dyn_range_type
->bounds ()->flag_upper_bound_is_count
)
2104 high_bound
.set_const_val
2105 (low_bound
.const_val () + high_bound
.const_val () - 1);
2108 high_bound
.set_undefined ();
2110 bool byte_stride_p
= dyn_range_type
->bounds ()->flag_is_byte_stride
;
2111 prop
= &dyn_range_type
->bounds ()->stride
;
2112 if (dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2114 stride
.set_const_val (value
);
2116 /* If we have a bit stride that is not an exact number of bytes then
2117 I really don't think this is going to work with current GDB, the
2118 array indexing code in GDB seems to be pretty heavily tied to byte
2119 offsets right now. Assuming 8 bits in a byte. */
2120 struct gdbarch
*gdbarch
= get_type_arch (dyn_range_type
);
2121 int unit_size
= gdbarch_addressable_memory_unit_size (gdbarch
);
2122 if (!byte_stride_p
&& (value
% (unit_size
* 8)) != 0)
2123 error (_("bit strides that are not a multiple of the byte size "
2124 "are currently not supported"));
2128 stride
.set_undefined ();
2129 byte_stride_p
= true;
2133 = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (dyn_range_type
),
2135 LONGEST bias
= dyn_range_type
->bounds ()->bias
;
2136 static_range_type
= create_range_type_with_stride
2137 (copy_type (dyn_range_type
), static_target_type
,
2138 &low_bound
, &high_bound
, bias
, &stride
, byte_stride_p
);
2139 static_range_type
->bounds ()->flag_bound_evaluated
= 1;
2140 return static_range_type
;
2143 /* Resolves dynamic bound values of an array or string type TYPE to static
2144 ones. ADDR_STACK is a stack of struct property_addr_info to be used if
2145 needed during the dynamic resolution. */
2147 static struct type
*
2148 resolve_dynamic_array_or_string (struct type
*type
,
2149 struct property_addr_info
*addr_stack
)
2152 struct type
*elt_type
;
2153 struct type
*range_type
;
2154 struct type
*ary_dim
;
2155 struct dynamic_prop
*prop
;
2156 unsigned int bit_stride
= 0;
2158 /* For dynamic type resolution strings can be treated like arrays of
2160 gdb_assert (type
->code () == TYPE_CODE_ARRAY
2161 || type
->code () == TYPE_CODE_STRING
);
2163 type
= copy_type (type
);
2166 range_type
= check_typedef (elt_type
->index_type ());
2167 range_type
= resolve_dynamic_range (range_type
, addr_stack
);
2169 /* Resolve allocated/associated here before creating a new array type, which
2170 will update the length of the array accordingly. */
2171 prop
= TYPE_ALLOCATED_PROP (type
);
2172 if (prop
!= NULL
&& dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2173 prop
->set_const_val (value
);
2175 prop
= TYPE_ASSOCIATED_PROP (type
);
2176 if (prop
!= NULL
&& dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2177 prop
->set_const_val (value
);
2179 ary_dim
= check_typedef (TYPE_TARGET_TYPE (elt_type
));
2181 if (ary_dim
!= NULL
&& ary_dim
->code () == TYPE_CODE_ARRAY
)
2182 elt_type
= resolve_dynamic_array_or_string (ary_dim
, addr_stack
);
2184 elt_type
= TYPE_TARGET_TYPE (type
);
2186 prop
= type
->dyn_prop (DYN_PROP_BYTE_STRIDE
);
2189 if (dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2191 type
->remove_dyn_prop (DYN_PROP_BYTE_STRIDE
);
2192 bit_stride
= (unsigned int) (value
* 8);
2196 /* Could be a bug in our code, but it could also happen
2197 if the DWARF info is not correct. Issue a warning,
2198 and assume no byte/bit stride (leave bit_stride = 0). */
2199 warning (_("cannot determine array stride for type %s"),
2200 type
->name () ? type
->name () : "<no name>");
2204 bit_stride
= TYPE_FIELD_BITSIZE (type
, 0);
2206 return create_array_type_with_stride (type
, elt_type
, range_type
, NULL
,
2210 /* Resolve dynamic bounds of members of the union TYPE to static
2211 bounds. ADDR_STACK is a stack of struct property_addr_info
2212 to be used if needed during the dynamic resolution. */
2214 static struct type
*
2215 resolve_dynamic_union (struct type
*type
,
2216 struct property_addr_info
*addr_stack
)
2218 struct type
*resolved_type
;
2220 unsigned int max_len
= 0;
2222 gdb_assert (type
->code () == TYPE_CODE_UNION
);
2224 resolved_type
= copy_type (type
);
2225 resolved_type
->set_fields
2227 TYPE_ALLOC (resolved_type
,
2228 resolved_type
->num_fields () * sizeof (struct field
)));
2229 memcpy (resolved_type
->fields (),
2231 resolved_type
->num_fields () * sizeof (struct field
));
2232 for (i
= 0; i
< resolved_type
->num_fields (); ++i
)
2236 if (field_is_static (&type
->field (i
)))
2239 t
= resolve_dynamic_type_internal (resolved_type
->field (i
).type (),
2241 resolved_type
->field (i
).set_type (t
);
2243 struct type
*real_type
= check_typedef (t
);
2244 if (TYPE_LENGTH (real_type
) > max_len
)
2245 max_len
= TYPE_LENGTH (real_type
);
2248 TYPE_LENGTH (resolved_type
) = max_len
;
2249 return resolved_type
;
2252 /* See gdbtypes.h. */
2255 variant::matches (ULONGEST value
, bool is_unsigned
) const
2257 for (const discriminant_range
&range
: discriminants
)
2258 if (range
.contains (value
, is_unsigned
))
2264 compute_variant_fields_inner (struct type
*type
,
2265 struct property_addr_info
*addr_stack
,
2266 const variant_part
&part
,
2267 std::vector
<bool> &flags
);
2269 /* A helper function to determine which variant fields will be active.
2270 This handles both the variant's direct fields, and any variant
2271 parts embedded in this variant. TYPE is the type we're examining.
2272 ADDR_STACK holds information about the concrete object. VARIANT is
2273 the current variant to be handled. FLAGS is where the results are
2274 stored -- this function sets the Nth element in FLAGS if the
2275 corresponding field is enabled. ENABLED is whether this variant is
2279 compute_variant_fields_recurse (struct type
*type
,
2280 struct property_addr_info
*addr_stack
,
2281 const variant
&variant
,
2282 std::vector
<bool> &flags
,
2285 for (int field
= variant
.first_field
; field
< variant
.last_field
; ++field
)
2286 flags
[field
] = enabled
;
2288 for (const variant_part
&new_part
: variant
.parts
)
2291 compute_variant_fields_inner (type
, addr_stack
, new_part
, flags
);
2294 for (const auto &sub_variant
: new_part
.variants
)
2295 compute_variant_fields_recurse (type
, addr_stack
, sub_variant
,
2301 /* A helper function to determine which variant fields will be active.
2302 This evaluates the discriminant, decides which variant (if any) is
2303 active, and then updates FLAGS to reflect which fields should be
2304 available. TYPE is the type we're examining. ADDR_STACK holds
2305 information about the concrete object. VARIANT is the current
2306 variant to be handled. FLAGS is where the results are stored --
2307 this function sets the Nth element in FLAGS if the corresponding
2308 field is enabled. */
2311 compute_variant_fields_inner (struct type
*type
,
2312 struct property_addr_info
*addr_stack
,
2313 const variant_part
&part
,
2314 std::vector
<bool> &flags
)
2316 /* Evaluate the discriminant. */
2317 gdb::optional
<ULONGEST
> discr_value
;
2318 if (part
.discriminant_index
!= -1)
2320 int idx
= part
.discriminant_index
;
2322 if (TYPE_FIELD_LOC_KIND (type
, idx
) != FIELD_LOC_KIND_BITPOS
)
2323 error (_("Cannot determine struct field location"
2324 " (invalid location kind)"));
2326 if (addr_stack
->valaddr
.data () != NULL
)
2327 discr_value
= unpack_field_as_long (type
, addr_stack
->valaddr
.data (),
2331 CORE_ADDR addr
= (addr_stack
->addr
2332 + (TYPE_FIELD_BITPOS (type
, idx
)
2333 / TARGET_CHAR_BIT
));
2335 LONGEST bitsize
= TYPE_FIELD_BITSIZE (type
, idx
);
2336 LONGEST size
= bitsize
/ 8;
2338 size
= TYPE_LENGTH (type
->field (idx
).type ());
2340 gdb_byte bits
[sizeof (ULONGEST
)];
2341 read_memory (addr
, bits
, size
);
2343 LONGEST bitpos
= (TYPE_FIELD_BITPOS (type
, idx
)
2346 discr_value
= unpack_bits_as_long (type
->field (idx
).type (),
2347 bits
, bitpos
, bitsize
);
2351 /* Go through each variant and see which applies. */
2352 const variant
*default_variant
= nullptr;
2353 const variant
*applied_variant
= nullptr;
2354 for (const auto &variant
: part
.variants
)
2356 if (variant
.is_default ())
2357 default_variant
= &variant
;
2358 else if (discr_value
.has_value ()
2359 && variant
.matches (*discr_value
, part
.is_unsigned
))
2361 applied_variant
= &variant
;
2365 if (applied_variant
== nullptr)
2366 applied_variant
= default_variant
;
2368 for (const auto &variant
: part
.variants
)
2369 compute_variant_fields_recurse (type
, addr_stack
, variant
,
2370 flags
, applied_variant
== &variant
);
2373 /* Determine which variant fields are available in TYPE. The enabled
2374 fields are stored in RESOLVED_TYPE. ADDR_STACK holds information
2375 about the concrete object. PARTS describes the top-level variant
2376 parts for this type. */
2379 compute_variant_fields (struct type
*type
,
2380 struct type
*resolved_type
,
2381 struct property_addr_info
*addr_stack
,
2382 const gdb::array_view
<variant_part
> &parts
)
2384 /* Assume all fields are included by default. */
2385 std::vector
<bool> flags (resolved_type
->num_fields (), true);
2387 /* Now disable fields based on the variants that control them. */
2388 for (const auto &part
: parts
)
2389 compute_variant_fields_inner (type
, addr_stack
, part
, flags
);
2391 resolved_type
->set_num_fields
2392 (std::count (flags
.begin (), flags
.end (), true));
2393 resolved_type
->set_fields
2395 TYPE_ALLOC (resolved_type
,
2396 resolved_type
->num_fields () * sizeof (struct field
)));
2399 for (int i
= 0; i
< type
->num_fields (); ++i
)
2404 resolved_type
->field (out
) = type
->field (i
);
2409 /* Resolve dynamic bounds of members of the struct TYPE to static
2410 bounds. ADDR_STACK is a stack of struct property_addr_info to
2411 be used if needed during the dynamic resolution. */
2413 static struct type
*
2414 resolve_dynamic_struct (struct type
*type
,
2415 struct property_addr_info
*addr_stack
)
2417 struct type
*resolved_type
;
2419 unsigned resolved_type_bit_length
= 0;
2421 gdb_assert (type
->code () == TYPE_CODE_STRUCT
);
2422 gdb_assert (type
->num_fields () > 0);
2424 resolved_type
= copy_type (type
);
2426 dynamic_prop
*variant_prop
= resolved_type
->dyn_prop (DYN_PROP_VARIANT_PARTS
);
2427 if (variant_prop
!= nullptr && variant_prop
->kind () == PROP_VARIANT_PARTS
)
2429 compute_variant_fields (type
, resolved_type
, addr_stack
,
2430 *variant_prop
->variant_parts ());
2431 /* We want to leave the property attached, so that the Rust code
2432 can tell whether the type was originally an enum. */
2433 variant_prop
->set_original_type (type
);
2437 resolved_type
->set_fields
2439 TYPE_ALLOC (resolved_type
,
2440 resolved_type
->num_fields () * sizeof (struct field
)));
2441 memcpy (resolved_type
->fields (),
2443 resolved_type
->num_fields () * sizeof (struct field
));
2446 for (i
= 0; i
< resolved_type
->num_fields (); ++i
)
2448 unsigned new_bit_length
;
2449 struct property_addr_info pinfo
;
2451 if (field_is_static (&resolved_type
->field (i
)))
2454 if (TYPE_FIELD_LOC_KIND (resolved_type
, i
) == FIELD_LOC_KIND_DWARF_BLOCK
)
2456 struct dwarf2_property_baton baton
;
2458 = lookup_pointer_type (resolved_type
->field (i
).type ());
2459 baton
.locexpr
= *TYPE_FIELD_DWARF_BLOCK (resolved_type
, i
);
2461 struct dynamic_prop prop
;
2462 prop
.set_locexpr (&baton
);
2465 if (dwarf2_evaluate_property (&prop
, nullptr, addr_stack
, &addr
,
2467 SET_FIELD_BITPOS (resolved_type
->field (i
),
2468 TARGET_CHAR_BIT
* (addr
- addr_stack
->addr
));
2471 /* As we know this field is not a static field, the field's
2472 field_loc_kind should be FIELD_LOC_KIND_BITPOS. Verify
2473 this is the case, but only trigger a simple error rather
2474 than an internal error if that fails. While failing
2475 that verification indicates a bug in our code, the error
2476 is not severe enough to suggest to the user he stops
2477 his debugging session because of it. */
2478 if (TYPE_FIELD_LOC_KIND (resolved_type
, i
) != FIELD_LOC_KIND_BITPOS
)
2479 error (_("Cannot determine struct field location"
2480 " (invalid location kind)"));
2482 pinfo
.type
= check_typedef (resolved_type
->field (i
).type ());
2483 pinfo
.valaddr
= addr_stack
->valaddr
;
2486 + (TYPE_FIELD_BITPOS (resolved_type
, i
) / TARGET_CHAR_BIT
));
2487 pinfo
.next
= addr_stack
;
2489 resolved_type
->field (i
).set_type
2490 (resolve_dynamic_type_internal (resolved_type
->field (i
).type (),
2492 gdb_assert (TYPE_FIELD_LOC_KIND (resolved_type
, i
)
2493 == FIELD_LOC_KIND_BITPOS
);
2495 new_bit_length
= TYPE_FIELD_BITPOS (resolved_type
, i
);
2496 if (TYPE_FIELD_BITSIZE (resolved_type
, i
) != 0)
2497 new_bit_length
+= TYPE_FIELD_BITSIZE (resolved_type
, i
);
2500 struct type
*real_type
2501 = check_typedef (resolved_type
->field (i
).type ());
2503 new_bit_length
+= (TYPE_LENGTH (real_type
) * TARGET_CHAR_BIT
);
2506 /* Normally, we would use the position and size of the last field
2507 to determine the size of the enclosing structure. But GCC seems
2508 to be encoding the position of some fields incorrectly when
2509 the struct contains a dynamic field that is not placed last.
2510 So we compute the struct size based on the field that has
2511 the highest position + size - probably the best we can do. */
2512 if (new_bit_length
> resolved_type_bit_length
)
2513 resolved_type_bit_length
= new_bit_length
;
2516 /* The length of a type won't change for fortran, but it does for C and Ada.
2517 For fortran the size of dynamic fields might change over time but not the
2518 type length of the structure. If we adapt it, we run into problems
2519 when calculating the element offset for arrays of structs. */
2520 if (current_language
->la_language
!= language_fortran
)
2521 TYPE_LENGTH (resolved_type
)
2522 = (resolved_type_bit_length
+ TARGET_CHAR_BIT
- 1) / TARGET_CHAR_BIT
;
2524 /* The Ada language uses this field as a cache for static fixed types: reset
2525 it as RESOLVED_TYPE must have its own static fixed type. */
2526 TYPE_TARGET_TYPE (resolved_type
) = NULL
;
2528 return resolved_type
;
2531 /* Worker for resolved_dynamic_type. */
2533 static struct type
*
2534 resolve_dynamic_type_internal (struct type
*type
,
2535 struct property_addr_info
*addr_stack
,
2538 struct type
*real_type
= check_typedef (type
);
2539 struct type
*resolved_type
= nullptr;
2540 struct dynamic_prop
*prop
;
2543 if (!is_dynamic_type_internal (real_type
, top_level
))
2546 gdb::optional
<CORE_ADDR
> type_length
;
2547 prop
= TYPE_DYNAMIC_LENGTH (type
);
2549 && dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2550 type_length
= value
;
2552 if (type
->code () == TYPE_CODE_TYPEDEF
)
2554 resolved_type
= copy_type (type
);
2555 TYPE_TARGET_TYPE (resolved_type
)
2556 = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (type
), addr_stack
,
2561 /* Before trying to resolve TYPE, make sure it is not a stub. */
2564 switch (type
->code ())
2568 struct property_addr_info pinfo
;
2570 pinfo
.type
= check_typedef (TYPE_TARGET_TYPE (type
));
2572 if (addr_stack
->valaddr
.data () != NULL
)
2573 pinfo
.addr
= extract_typed_address (addr_stack
->valaddr
.data (),
2576 pinfo
.addr
= read_memory_typed_address (addr_stack
->addr
, type
);
2577 pinfo
.next
= addr_stack
;
2579 resolved_type
= copy_type (type
);
2580 TYPE_TARGET_TYPE (resolved_type
)
2581 = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (type
),
2586 case TYPE_CODE_STRING
:
2587 /* Strings are very much like an array of characters, and can be
2588 treated as one here. */
2589 case TYPE_CODE_ARRAY
:
2590 resolved_type
= resolve_dynamic_array_or_string (type
, addr_stack
);
2593 case TYPE_CODE_RANGE
:
2594 resolved_type
= resolve_dynamic_range (type
, addr_stack
);
2597 case TYPE_CODE_UNION
:
2598 resolved_type
= resolve_dynamic_union (type
, addr_stack
);
2601 case TYPE_CODE_STRUCT
:
2602 resolved_type
= resolve_dynamic_struct (type
, addr_stack
);
2607 if (resolved_type
== nullptr)
2610 if (type_length
.has_value ())
2612 TYPE_LENGTH (resolved_type
) = *type_length
;
2613 resolved_type
->remove_dyn_prop (DYN_PROP_BYTE_SIZE
);
2616 /* Resolve data_location attribute. */
2617 prop
= TYPE_DATA_LOCATION (resolved_type
);
2619 && dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2620 prop
->set_const_val (value
);
2622 return resolved_type
;
2625 /* See gdbtypes.h */
2628 resolve_dynamic_type (struct type
*type
,
2629 gdb::array_view
<const gdb_byte
> valaddr
,
2632 struct property_addr_info pinfo
2633 = {check_typedef (type
), valaddr
, addr
, NULL
};
2635 return resolve_dynamic_type_internal (type
, &pinfo
, 1);
2638 /* See gdbtypes.h */
2641 type::dyn_prop (dynamic_prop_node_kind prop_kind
) const
2643 dynamic_prop_list
*node
= this->main_type
->dyn_prop_list
;
2645 while (node
!= NULL
)
2647 if (node
->prop_kind
== prop_kind
)
2654 /* See gdbtypes.h */
2657 type::add_dyn_prop (dynamic_prop_node_kind prop_kind
, dynamic_prop prop
)
2659 struct dynamic_prop_list
*temp
;
2661 gdb_assert (TYPE_OBJFILE_OWNED (this));
2663 temp
= XOBNEW (&TYPE_OBJFILE (this)->objfile_obstack
,
2664 struct dynamic_prop_list
);
2665 temp
->prop_kind
= prop_kind
;
2667 temp
->next
= this->main_type
->dyn_prop_list
;
2669 this->main_type
->dyn_prop_list
= temp
;
2672 /* See gdbtypes.h. */
2675 type::remove_dyn_prop (dynamic_prop_node_kind kind
)
2677 struct dynamic_prop_list
*prev_node
, *curr_node
;
2679 curr_node
= this->main_type
->dyn_prop_list
;
2682 while (NULL
!= curr_node
)
2684 if (curr_node
->prop_kind
== kind
)
2686 /* Update the linked list but don't free anything.
2687 The property was allocated on objstack and it is not known
2688 if we are on top of it. Nevertheless, everything is released
2689 when the complete objstack is freed. */
2690 if (NULL
== prev_node
)
2691 this->main_type
->dyn_prop_list
= curr_node
->next
;
2693 prev_node
->next
= curr_node
->next
;
2698 prev_node
= curr_node
;
2699 curr_node
= curr_node
->next
;
2703 /* Find the real type of TYPE. This function returns the real type,
2704 after removing all layers of typedefs, and completing opaque or stub
2705 types. Completion changes the TYPE argument, but stripping of
2708 Instance flags (e.g. const/volatile) are preserved as typedefs are
2709 stripped. If necessary a new qualified form of the underlying type
2712 NOTE: This will return a typedef if TYPE_TARGET_TYPE for the typedef has
2713 not been computed and we're either in the middle of reading symbols, or
2714 there was no name for the typedef in the debug info.
2716 NOTE: Lookup of opaque types can throw errors for invalid symbol files.
2717 QUITs in the symbol reading code can also throw.
2718 Thus this function can throw an exception.
2720 If TYPE is a TYPE_CODE_TYPEDEF, its length is updated to the length of
2723 If this is a stubbed struct (i.e. declared as struct foo *), see if
2724 we can find a full definition in some other file. If so, copy this
2725 definition, so we can use it in future. There used to be a comment
2726 (but not any code) that if we don't find a full definition, we'd
2727 set a flag so we don't spend time in the future checking the same
2728 type. That would be a mistake, though--we might load in more
2729 symbols which contain a full definition for the type. */
2732 check_typedef (struct type
*type
)
2734 struct type
*orig_type
= type
;
2735 /* While we're removing typedefs, we don't want to lose qualifiers.
2736 E.g., const/volatile. */
2737 int instance_flags
= TYPE_INSTANCE_FLAGS (type
);
2741 while (type
->code () == TYPE_CODE_TYPEDEF
)
2743 if (!TYPE_TARGET_TYPE (type
))
2748 /* It is dangerous to call lookup_symbol if we are currently
2749 reading a symtab. Infinite recursion is one danger. */
2750 if (currently_reading_symtab
)
2751 return make_qualified_type (type
, instance_flags
, NULL
);
2753 name
= type
->name ();
2754 /* FIXME: shouldn't we look in STRUCT_DOMAIN and/or
2755 VAR_DOMAIN as appropriate? */
2758 stub_noname_complaint ();
2759 return make_qualified_type (type
, instance_flags
, NULL
);
2761 sym
= lookup_symbol (name
, 0, STRUCT_DOMAIN
, 0).symbol
;
2763 TYPE_TARGET_TYPE (type
) = SYMBOL_TYPE (sym
);
2764 else /* TYPE_CODE_UNDEF */
2765 TYPE_TARGET_TYPE (type
) = alloc_type_arch (get_type_arch (type
));
2767 type
= TYPE_TARGET_TYPE (type
);
2769 /* Preserve the instance flags as we traverse down the typedef chain.
2771 Handling address spaces/classes is nasty, what do we do if there's a
2773 E.g., what if an outer typedef marks the type as class_1 and an inner
2774 typedef marks the type as class_2?
2775 This is the wrong place to do such error checking. We leave it to
2776 the code that created the typedef in the first place to flag the
2777 error. We just pick the outer address space (akin to letting the
2778 outer cast in a chain of casting win), instead of assuming
2779 "it can't happen". */
2781 const int ALL_SPACES
= (TYPE_INSTANCE_FLAG_CODE_SPACE
2782 | TYPE_INSTANCE_FLAG_DATA_SPACE
);
2783 const int ALL_CLASSES
= TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL
;
2784 int new_instance_flags
= TYPE_INSTANCE_FLAGS (type
);
2786 /* Treat code vs data spaces and address classes separately. */
2787 if ((instance_flags
& ALL_SPACES
) != 0)
2788 new_instance_flags
&= ~ALL_SPACES
;
2789 if ((instance_flags
& ALL_CLASSES
) != 0)
2790 new_instance_flags
&= ~ALL_CLASSES
;
2792 instance_flags
|= new_instance_flags
;
2796 /* If this is a struct/class/union with no fields, then check
2797 whether a full definition exists somewhere else. This is for
2798 systems where a type definition with no fields is issued for such
2799 types, instead of identifying them as stub types in the first
2802 if (TYPE_IS_OPAQUE (type
)
2803 && opaque_type_resolution
2804 && !currently_reading_symtab
)
2806 const char *name
= type
->name ();
2807 struct type
*newtype
;
2811 stub_noname_complaint ();
2812 return make_qualified_type (type
, instance_flags
, NULL
);
2814 newtype
= lookup_transparent_type (name
);
2818 /* If the resolved type and the stub are in the same
2819 objfile, then replace the stub type with the real deal.
2820 But if they're in separate objfiles, leave the stub
2821 alone; we'll just look up the transparent type every time
2822 we call check_typedef. We can't create pointers between
2823 types allocated to different objfiles, since they may
2824 have different lifetimes. Trying to copy NEWTYPE over to
2825 TYPE's objfile is pointless, too, since you'll have to
2826 move over any other types NEWTYPE refers to, which could
2827 be an unbounded amount of stuff. */
2828 if (TYPE_OBJFILE (newtype
) == TYPE_OBJFILE (type
))
2829 type
= make_qualified_type (newtype
,
2830 TYPE_INSTANCE_FLAGS (type
),
2836 /* Otherwise, rely on the stub flag being set for opaque/stubbed
2838 else if (TYPE_STUB (type
) && !currently_reading_symtab
)
2840 const char *name
= type
->name ();
2841 /* FIXME: shouldn't we look in STRUCT_DOMAIN and/or VAR_DOMAIN
2847 stub_noname_complaint ();
2848 return make_qualified_type (type
, instance_flags
, NULL
);
2850 sym
= lookup_symbol (name
, 0, STRUCT_DOMAIN
, 0).symbol
;
2853 /* Same as above for opaque types, we can replace the stub
2854 with the complete type only if they are in the same
2856 if (TYPE_OBJFILE (SYMBOL_TYPE (sym
)) == TYPE_OBJFILE (type
))
2857 type
= make_qualified_type (SYMBOL_TYPE (sym
),
2858 TYPE_INSTANCE_FLAGS (type
),
2861 type
= SYMBOL_TYPE (sym
);
2865 if (TYPE_TARGET_STUB (type
))
2867 struct type
*target_type
= check_typedef (TYPE_TARGET_TYPE (type
));
2869 if (TYPE_STUB (target_type
) || TYPE_TARGET_STUB (target_type
))
2871 /* Nothing we can do. */
2873 else if (type
->code () == TYPE_CODE_RANGE
)
2875 TYPE_LENGTH (type
) = TYPE_LENGTH (target_type
);
2876 TYPE_TARGET_STUB (type
) = 0;
2878 else if (type
->code () == TYPE_CODE_ARRAY
2879 && update_static_array_size (type
))
2880 TYPE_TARGET_STUB (type
) = 0;
2883 type
= make_qualified_type (type
, instance_flags
, NULL
);
2885 /* Cache TYPE_LENGTH for future use. */
2886 TYPE_LENGTH (orig_type
) = TYPE_LENGTH (type
);
2891 /* Parse a type expression in the string [P..P+LENGTH). If an error
2892 occurs, silently return a void type. */
2894 static struct type
*
2895 safe_parse_type (struct gdbarch
*gdbarch
, char *p
, int length
)
2897 struct ui_file
*saved_gdb_stderr
;
2898 struct type
*type
= NULL
; /* Initialize to keep gcc happy. */
2900 /* Suppress error messages. */
2901 saved_gdb_stderr
= gdb_stderr
;
2902 gdb_stderr
= &null_stream
;
2904 /* Call parse_and_eval_type() without fear of longjmp()s. */
2907 type
= parse_and_eval_type (p
, length
);
2909 catch (const gdb_exception_error
&except
)
2911 type
= builtin_type (gdbarch
)->builtin_void
;
2914 /* Stop suppressing error messages. */
2915 gdb_stderr
= saved_gdb_stderr
;
2920 /* Ugly hack to convert method stubs into method types.
2922 He ain't kiddin'. This demangles the name of the method into a
2923 string including argument types, parses out each argument type,
2924 generates a string casting a zero to that type, evaluates the
2925 string, and stuffs the resulting type into an argtype vector!!!
2926 Then it knows the type of the whole function (including argument
2927 types for overloading), which info used to be in the stab's but was
2928 removed to hack back the space required for them. */
2931 check_stub_method (struct type
*type
, int method_id
, int signature_id
)
2933 struct gdbarch
*gdbarch
= get_type_arch (type
);
2935 char *mangled_name
= gdb_mangle_name (type
, method_id
, signature_id
);
2936 char *demangled_name
= gdb_demangle (mangled_name
,
2937 DMGL_PARAMS
| DMGL_ANSI
);
2938 char *argtypetext
, *p
;
2939 int depth
= 0, argcount
= 1;
2940 struct field
*argtypes
;
2943 /* Make sure we got back a function string that we can use. */
2945 p
= strchr (demangled_name
, '(');
2949 if (demangled_name
== NULL
|| p
== NULL
)
2950 error (_("Internal: Cannot demangle mangled name `%s'."),
2953 /* Now, read in the parameters that define this type. */
2958 if (*p
== '(' || *p
== '<')
2962 else if (*p
== ')' || *p
== '>')
2966 else if (*p
== ',' && depth
== 0)
2974 /* If we read one argument and it was ``void'', don't count it. */
2975 if (startswith (argtypetext
, "(void)"))
2978 /* We need one extra slot, for the THIS pointer. */
2980 argtypes
= (struct field
*)
2981 TYPE_ALLOC (type
, (argcount
+ 1) * sizeof (struct field
));
2984 /* Add THIS pointer for non-static methods. */
2985 f
= TYPE_FN_FIELDLIST1 (type
, method_id
);
2986 if (TYPE_FN_FIELD_STATIC_P (f
, signature_id
))
2990 argtypes
[0].set_type (lookup_pointer_type (type
));
2994 if (*p
!= ')') /* () means no args, skip while. */
2999 if (depth
<= 0 && (*p
== ',' || *p
== ')'))
3001 /* Avoid parsing of ellipsis, they will be handled below.
3002 Also avoid ``void'' as above. */
3003 if (strncmp (argtypetext
, "...", p
- argtypetext
) != 0
3004 && strncmp (argtypetext
, "void", p
- argtypetext
) != 0)
3006 argtypes
[argcount
].set_type
3007 (safe_parse_type (gdbarch
, argtypetext
, p
- argtypetext
));
3010 argtypetext
= p
+ 1;
3013 if (*p
== '(' || *p
== '<')
3017 else if (*p
== ')' || *p
== '>')
3026 TYPE_FN_FIELD_PHYSNAME (f
, signature_id
) = mangled_name
;
3028 /* Now update the old "stub" type into a real type. */
3029 mtype
= TYPE_FN_FIELD_TYPE (f
, signature_id
);
3030 /* MTYPE may currently be a function (TYPE_CODE_FUNC).
3031 We want a method (TYPE_CODE_METHOD). */
3032 smash_to_method_type (mtype
, type
, TYPE_TARGET_TYPE (mtype
),
3033 argtypes
, argcount
, p
[-2] == '.');
3034 TYPE_STUB (mtype
) = 0;
3035 TYPE_FN_FIELD_STUB (f
, signature_id
) = 0;
3037 xfree (demangled_name
);
3040 /* This is the external interface to check_stub_method, above. This
3041 function unstubs all of the signatures for TYPE's METHOD_ID method
3042 name. After calling this function TYPE_FN_FIELD_STUB will be
3043 cleared for each signature and TYPE_FN_FIELDLIST_NAME will be
3046 This function unfortunately can not die until stabs do. */
3049 check_stub_method_group (struct type
*type
, int method_id
)
3051 int len
= TYPE_FN_FIELDLIST_LENGTH (type
, method_id
);
3052 struct fn_field
*f
= TYPE_FN_FIELDLIST1 (type
, method_id
);
3054 for (int j
= 0; j
< len
; j
++)
3056 if (TYPE_FN_FIELD_STUB (f
, j
))
3057 check_stub_method (type
, method_id
, j
);
3061 /* Ensure it is in .rodata (if available) by working around GCC PR 44690. */
3062 const struct cplus_struct_type cplus_struct_default
= { };
3065 allocate_cplus_struct_type (struct type
*type
)
3067 if (HAVE_CPLUS_STRUCT (type
))
3068 /* Structure was already allocated. Nothing more to do. */
3071 TYPE_SPECIFIC_FIELD (type
) = TYPE_SPECIFIC_CPLUS_STUFF
;
3072 TYPE_RAW_CPLUS_SPECIFIC (type
) = (struct cplus_struct_type
*)
3073 TYPE_ALLOC (type
, sizeof (struct cplus_struct_type
));
3074 *(TYPE_RAW_CPLUS_SPECIFIC (type
)) = cplus_struct_default
;
3075 set_type_vptr_fieldno (type
, -1);
3078 const struct gnat_aux_type gnat_aux_default
=
3081 /* Set the TYPE's type-specific kind to TYPE_SPECIFIC_GNAT_STUFF,
3082 and allocate the associated gnat-specific data. The gnat-specific
3083 data is also initialized to gnat_aux_default. */
3086 allocate_gnat_aux_type (struct type
*type
)
3088 TYPE_SPECIFIC_FIELD (type
) = TYPE_SPECIFIC_GNAT_STUFF
;
3089 TYPE_GNAT_SPECIFIC (type
) = (struct gnat_aux_type
*)
3090 TYPE_ALLOC (type
, sizeof (struct gnat_aux_type
));
3091 *(TYPE_GNAT_SPECIFIC (type
)) = gnat_aux_default
;
3094 /* Helper function to initialize a newly allocated type. Set type code
3095 to CODE and initialize the type-specific fields accordingly. */
3098 set_type_code (struct type
*type
, enum type_code code
)
3100 type
->set_code (code
);
3104 case TYPE_CODE_STRUCT
:
3105 case TYPE_CODE_UNION
:
3106 case TYPE_CODE_NAMESPACE
:
3107 INIT_CPLUS_SPECIFIC (type
);
3110 TYPE_SPECIFIC_FIELD (type
) = TYPE_SPECIFIC_FLOATFORMAT
;
3112 case TYPE_CODE_FUNC
:
3113 INIT_FUNC_SPECIFIC (type
);
3118 /* Helper function to verify floating-point format and size.
3119 BIT is the type size in bits; if BIT equals -1, the size is
3120 determined by the floatformat. Returns size to be used. */
3123 verify_floatformat (int bit
, const struct floatformat
*floatformat
)
3125 gdb_assert (floatformat
!= NULL
);
3128 bit
= floatformat
->totalsize
;
3130 gdb_assert (bit
>= 0);
3131 gdb_assert (bit
>= floatformat
->totalsize
);
3136 /* Return the floating-point format for a floating-point variable of
3139 const struct floatformat
*
3140 floatformat_from_type (const struct type
*type
)
3142 gdb_assert (type
->code () == TYPE_CODE_FLT
);
3143 gdb_assert (TYPE_FLOATFORMAT (type
));
3144 return TYPE_FLOATFORMAT (type
);
3147 /* Helper function to initialize the standard scalar types.
3149 If NAME is non-NULL, then it is used to initialize the type name.
3150 Note that NAME is not copied; it is required to have a lifetime at
3151 least as long as OBJFILE. */
3154 init_type (struct objfile
*objfile
, enum type_code code
, int bit
,
3159 type
= alloc_type (objfile
);
3160 set_type_code (type
, code
);
3161 gdb_assert ((bit
% TARGET_CHAR_BIT
) == 0);
3162 TYPE_LENGTH (type
) = bit
/ TARGET_CHAR_BIT
;
3163 type
->set_name (name
);
3168 /* Allocate a TYPE_CODE_ERROR type structure associated with OBJFILE,
3169 to use with variables that have no debug info. NAME is the type
3172 static struct type
*
3173 init_nodebug_var_type (struct objfile
*objfile
, const char *name
)
3175 return init_type (objfile
, TYPE_CODE_ERROR
, 0, name
);
3178 /* Allocate a TYPE_CODE_INT type structure associated with OBJFILE.
3179 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
3180 the type's TYPE_UNSIGNED flag. NAME is the type name. */
3183 init_integer_type (struct objfile
*objfile
,
3184 int bit
, int unsigned_p
, const char *name
)
3188 t
= init_type (objfile
, TYPE_CODE_INT
, bit
, name
);
3190 TYPE_UNSIGNED (t
) = 1;
3195 /* Allocate a TYPE_CODE_CHAR type structure associated with OBJFILE.
3196 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
3197 the type's TYPE_UNSIGNED flag. NAME is the type name. */
3200 init_character_type (struct objfile
*objfile
,
3201 int bit
, int unsigned_p
, const char *name
)
3205 t
= init_type (objfile
, TYPE_CODE_CHAR
, bit
, name
);
3207 TYPE_UNSIGNED (t
) = 1;
3212 /* Allocate a TYPE_CODE_BOOL type structure associated with OBJFILE.
3213 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
3214 the type's TYPE_UNSIGNED flag. NAME is the type name. */
3217 init_boolean_type (struct objfile
*objfile
,
3218 int bit
, int unsigned_p
, const char *name
)
3222 t
= init_type (objfile
, TYPE_CODE_BOOL
, bit
, name
);
3224 TYPE_UNSIGNED (t
) = 1;
3229 /* Allocate a TYPE_CODE_FLT type structure associated with OBJFILE.
3230 BIT is the type size in bits; if BIT equals -1, the size is
3231 determined by the floatformat. NAME is the type name. Set the
3232 TYPE_FLOATFORMAT from FLOATFORMATS. BYTE_ORDER is the byte order
3233 to use. If it is BFD_ENDIAN_UNKNOWN (the default), then the byte
3234 order of the objfile's architecture is used. */
3237 init_float_type (struct objfile
*objfile
,
3238 int bit
, const char *name
,
3239 const struct floatformat
**floatformats
,
3240 enum bfd_endian byte_order
)
3242 if (byte_order
== BFD_ENDIAN_UNKNOWN
)
3244 struct gdbarch
*gdbarch
= objfile
->arch ();
3245 byte_order
= gdbarch_byte_order (gdbarch
);
3247 const struct floatformat
*fmt
= floatformats
[byte_order
];
3250 bit
= verify_floatformat (bit
, fmt
);
3251 t
= init_type (objfile
, TYPE_CODE_FLT
, bit
, name
);
3252 TYPE_FLOATFORMAT (t
) = fmt
;
3257 /* Allocate a TYPE_CODE_DECFLOAT type structure associated with OBJFILE.
3258 BIT is the type size in bits. NAME is the type name. */
3261 init_decfloat_type (struct objfile
*objfile
, int bit
, const char *name
)
3265 t
= init_type (objfile
, TYPE_CODE_DECFLOAT
, bit
, name
);
3269 /* Allocate a TYPE_CODE_COMPLEX type structure. NAME is the type
3270 name. TARGET_TYPE is the component type. */
3273 init_complex_type (const char *name
, struct type
*target_type
)
3277 gdb_assert (target_type
->code () == TYPE_CODE_INT
3278 || target_type
->code () == TYPE_CODE_FLT
);
3280 if (TYPE_MAIN_TYPE (target_type
)->flds_bnds
.complex_type
== nullptr)
3282 if (name
== nullptr)
3285 = (char *) TYPE_ALLOC (target_type
,
3286 strlen (target_type
->name ())
3287 + strlen ("_Complex ") + 1);
3288 strcpy (new_name
, "_Complex ");
3289 strcat (new_name
, target_type
->name ());
3293 t
= alloc_type_copy (target_type
);
3294 set_type_code (t
, TYPE_CODE_COMPLEX
);
3295 TYPE_LENGTH (t
) = 2 * TYPE_LENGTH (target_type
);
3298 TYPE_TARGET_TYPE (t
) = target_type
;
3299 TYPE_MAIN_TYPE (target_type
)->flds_bnds
.complex_type
= t
;
3302 return TYPE_MAIN_TYPE (target_type
)->flds_bnds
.complex_type
;
3305 /* Allocate a TYPE_CODE_PTR type structure associated with OBJFILE.
3306 BIT is the pointer type size in bits. NAME is the type name.
3307 TARGET_TYPE is the pointer target type. Always sets the pointer type's
3308 TYPE_UNSIGNED flag. */
3311 init_pointer_type (struct objfile
*objfile
,
3312 int bit
, const char *name
, struct type
*target_type
)
3316 t
= init_type (objfile
, TYPE_CODE_PTR
, bit
, name
);
3317 TYPE_TARGET_TYPE (t
) = target_type
;
3318 TYPE_UNSIGNED (t
) = 1;
3322 /* See gdbtypes.h. */
3325 type_raw_align (struct type
*type
)
3327 if (type
->align_log2
!= 0)
3328 return 1 << (type
->align_log2
- 1);
3332 /* See gdbtypes.h. */
3335 type_align (struct type
*type
)
3337 /* Check alignment provided in the debug information. */
3338 unsigned raw_align
= type_raw_align (type
);
3342 /* Allow the architecture to provide an alignment. */
3343 struct gdbarch
*arch
= get_type_arch (type
);
3344 ULONGEST align
= gdbarch_type_align (arch
, type
);
3348 switch (type
->code ())
3351 case TYPE_CODE_FUNC
:
3352 case TYPE_CODE_FLAGS
:
3354 case TYPE_CODE_RANGE
:
3356 case TYPE_CODE_ENUM
:
3358 case TYPE_CODE_RVALUE_REF
:
3359 case TYPE_CODE_CHAR
:
3360 case TYPE_CODE_BOOL
:
3361 case TYPE_CODE_DECFLOAT
:
3362 case TYPE_CODE_METHODPTR
:
3363 case TYPE_CODE_MEMBERPTR
:
3364 align
= type_length_units (check_typedef (type
));
3367 case TYPE_CODE_ARRAY
:
3368 case TYPE_CODE_COMPLEX
:
3369 case TYPE_CODE_TYPEDEF
:
3370 align
= type_align (TYPE_TARGET_TYPE (type
));
3373 case TYPE_CODE_STRUCT
:
3374 case TYPE_CODE_UNION
:
3376 int number_of_non_static_fields
= 0;
3377 for (unsigned i
= 0; i
< type
->num_fields (); ++i
)
3379 if (!field_is_static (&type
->field (i
)))
3381 number_of_non_static_fields
++;
3382 ULONGEST f_align
= type_align (type
->field (i
).type ());
3385 /* Don't pretend we know something we don't. */
3389 if (f_align
> align
)
3393 /* A struct with no fields, or with only static fields has an
3395 if (number_of_non_static_fields
== 0)
3401 case TYPE_CODE_STRING
:
3402 /* Not sure what to do here, and these can't appear in C or C++
3406 case TYPE_CODE_VOID
:
3410 case TYPE_CODE_ERROR
:
3411 case TYPE_CODE_METHOD
:
3416 if ((align
& (align
- 1)) != 0)
3418 /* Not a power of 2, so pass. */
3425 /* See gdbtypes.h. */
3428 set_type_align (struct type
*type
, ULONGEST align
)
3430 /* Must be a power of 2. Zero is ok. */
3431 gdb_assert ((align
& (align
- 1)) == 0);
3433 unsigned result
= 0;
3440 if (result
>= (1 << TYPE_ALIGN_BITS
))
3443 type
->align_log2
= result
;
3448 /* Queries on types. */
3451 can_dereference (struct type
*t
)
3453 /* FIXME: Should we return true for references as well as
3455 t
= check_typedef (t
);
3458 && t
->code () == TYPE_CODE_PTR
3459 && TYPE_TARGET_TYPE (t
)->code () != TYPE_CODE_VOID
);
3463 is_integral_type (struct type
*t
)
3465 t
= check_typedef (t
);
3468 && ((t
->code () == TYPE_CODE_INT
)
3469 || (t
->code () == TYPE_CODE_ENUM
)
3470 || (t
->code () == TYPE_CODE_FLAGS
)
3471 || (t
->code () == TYPE_CODE_CHAR
)
3472 || (t
->code () == TYPE_CODE_RANGE
)
3473 || (t
->code () == TYPE_CODE_BOOL
)));
3477 is_floating_type (struct type
*t
)
3479 t
= check_typedef (t
);
3482 && ((t
->code () == TYPE_CODE_FLT
)
3483 || (t
->code () == TYPE_CODE_DECFLOAT
)));
3486 /* Return true if TYPE is scalar. */
3489 is_scalar_type (struct type
*type
)
3491 type
= check_typedef (type
);
3493 switch (type
->code ())
3495 case TYPE_CODE_ARRAY
:
3496 case TYPE_CODE_STRUCT
:
3497 case TYPE_CODE_UNION
:
3499 case TYPE_CODE_STRING
:
3506 /* Return true if T is scalar, or a composite type which in practice has
3507 the memory layout of a scalar type. E.g., an array or struct with only
3508 one scalar element inside it, or a union with only scalar elements. */
3511 is_scalar_type_recursive (struct type
*t
)
3513 t
= check_typedef (t
);
3515 if (is_scalar_type (t
))
3517 /* Are we dealing with an array or string of known dimensions? */
3518 else if ((t
->code () == TYPE_CODE_ARRAY
3519 || t
->code () == TYPE_CODE_STRING
) && t
->num_fields () == 1
3520 && t
->index_type ()->code () == TYPE_CODE_RANGE
)
3522 LONGEST low_bound
, high_bound
;
3523 struct type
*elt_type
= check_typedef (TYPE_TARGET_TYPE (t
));
3525 get_discrete_bounds (t
->index_type (), &low_bound
, &high_bound
);
3527 return high_bound
== low_bound
&& is_scalar_type_recursive (elt_type
);
3529 /* Are we dealing with a struct with one element? */
3530 else if (t
->code () == TYPE_CODE_STRUCT
&& t
->num_fields () == 1)
3531 return is_scalar_type_recursive (t
->field (0).type ());
3532 else if (t
->code () == TYPE_CODE_UNION
)
3534 int i
, n
= t
->num_fields ();
3536 /* If all elements of the union are scalar, then the union is scalar. */
3537 for (i
= 0; i
< n
; i
++)
3538 if (!is_scalar_type_recursive (t
->field (i
).type ()))
3547 /* Return true is T is a class or a union. False otherwise. */
3550 class_or_union_p (const struct type
*t
)
3552 return (t
->code () == TYPE_CODE_STRUCT
3553 || t
->code () == TYPE_CODE_UNION
);
3556 /* A helper function which returns true if types A and B represent the
3557 "same" class type. This is true if the types have the same main
3558 type, or the same name. */
3561 class_types_same_p (const struct type
*a
, const struct type
*b
)
3563 return (TYPE_MAIN_TYPE (a
) == TYPE_MAIN_TYPE (b
)
3564 || (a
->name () && b
->name ()
3565 && !strcmp (a
->name (), b
->name ())));
3568 /* If BASE is an ancestor of DCLASS return the distance between them.
3569 otherwise return -1;
3573 class B: public A {};
3574 class C: public B {};
3577 distance_to_ancestor (A, A, 0) = 0
3578 distance_to_ancestor (A, B, 0) = 1
3579 distance_to_ancestor (A, C, 0) = 2
3580 distance_to_ancestor (A, D, 0) = 3
3582 If PUBLIC is 1 then only public ancestors are considered,
3583 and the function returns the distance only if BASE is a public ancestor
3587 distance_to_ancestor (A, D, 1) = -1. */
3590 distance_to_ancestor (struct type
*base
, struct type
*dclass
, int is_public
)
3595 base
= check_typedef (base
);
3596 dclass
= check_typedef (dclass
);
3598 if (class_types_same_p (base
, dclass
))
3601 for (i
= 0; i
< TYPE_N_BASECLASSES (dclass
); i
++)
3603 if (is_public
&& ! BASETYPE_VIA_PUBLIC (dclass
, i
))
3606 d
= distance_to_ancestor (base
, TYPE_BASECLASS (dclass
, i
), is_public
);
3614 /* Check whether BASE is an ancestor or base class or DCLASS
3615 Return 1 if so, and 0 if not.
3616 Note: If BASE and DCLASS are of the same type, this function
3617 will return 1. So for some class A, is_ancestor (A, A) will
3621 is_ancestor (struct type
*base
, struct type
*dclass
)
3623 return distance_to_ancestor (base
, dclass
, 0) >= 0;
3626 /* Like is_ancestor, but only returns true when BASE is a public
3627 ancestor of DCLASS. */
3630 is_public_ancestor (struct type
*base
, struct type
*dclass
)
3632 return distance_to_ancestor (base
, dclass
, 1) >= 0;
3635 /* A helper function for is_unique_ancestor. */
3638 is_unique_ancestor_worker (struct type
*base
, struct type
*dclass
,
3640 const gdb_byte
*valaddr
, int embedded_offset
,
3641 CORE_ADDR address
, struct value
*val
)
3645 base
= check_typedef (base
);
3646 dclass
= check_typedef (dclass
);
3648 for (i
= 0; i
< TYPE_N_BASECLASSES (dclass
) && count
< 2; ++i
)
3653 iter
= check_typedef (TYPE_BASECLASS (dclass
, i
));
3655 this_offset
= baseclass_offset (dclass
, i
, valaddr
, embedded_offset
,
3658 if (class_types_same_p (base
, iter
))
3660 /* If this is the first subclass, set *OFFSET and set count
3661 to 1. Otherwise, if this is at the same offset as
3662 previous instances, do nothing. Otherwise, increment
3666 *offset
= this_offset
;
3669 else if (this_offset
== *offset
)
3677 count
+= is_unique_ancestor_worker (base
, iter
, offset
,
3679 embedded_offset
+ this_offset
,
3686 /* Like is_ancestor, but only returns true if BASE is a unique base
3687 class of the type of VAL. */
3690 is_unique_ancestor (struct type
*base
, struct value
*val
)
3694 return is_unique_ancestor_worker (base
, value_type (val
), &offset
,
3695 value_contents_for_printing (val
),
3696 value_embedded_offset (val
),
3697 value_address (val
), val
) == 1;
3700 /* See gdbtypes.h. */
3703 type_byte_order (const struct type
*type
)
3705 bfd_endian byteorder
= gdbarch_byte_order (get_type_arch (type
));
3706 if (TYPE_ENDIANITY_NOT_DEFAULT (type
))
3708 if (byteorder
== BFD_ENDIAN_BIG
)
3709 return BFD_ENDIAN_LITTLE
;
3712 gdb_assert (byteorder
== BFD_ENDIAN_LITTLE
);
3713 return BFD_ENDIAN_BIG
;
3721 /* Overload resolution. */
3723 /* Return the sum of the rank of A with the rank of B. */
3726 sum_ranks (struct rank a
, struct rank b
)
3729 c
.rank
= a
.rank
+ b
.rank
;
3730 c
.subrank
= a
.subrank
+ b
.subrank
;
3734 /* Compare rank A and B and return:
3736 1 if a is better than b
3737 -1 if b is better than a. */
3740 compare_ranks (struct rank a
, struct rank b
)
3742 if (a
.rank
== b
.rank
)
3744 if (a
.subrank
== b
.subrank
)
3746 if (a
.subrank
< b
.subrank
)
3748 if (a
.subrank
> b
.subrank
)
3752 if (a
.rank
< b
.rank
)
3755 /* a.rank > b.rank */
3759 /* Functions for overload resolution begin here. */
3761 /* Compare two badness vectors A and B and return the result.
3762 0 => A and B are identical
3763 1 => A and B are incomparable
3764 2 => A is better than B
3765 3 => A is worse than B */
3768 compare_badness (const badness_vector
&a
, const badness_vector
&b
)
3772 short found_pos
= 0; /* any positives in c? */
3773 short found_neg
= 0; /* any negatives in c? */
3775 /* differing sizes => incomparable */
3776 if (a
.size () != b
.size ())
3779 /* Subtract b from a */
3780 for (i
= 0; i
< a
.size (); i
++)
3782 tmp
= compare_ranks (b
[i
], a
[i
]);
3792 return 1; /* incomparable */
3794 return 3; /* A > B */
3800 return 2; /* A < B */
3802 return 0; /* A == B */
3806 /* Rank a function by comparing its parameter types (PARMS), to the
3807 types of an argument list (ARGS). Return the badness vector. This
3808 has ARGS.size() + 1 entries. */
3811 rank_function (gdb::array_view
<type
*> parms
,
3812 gdb::array_view
<value
*> args
)
3814 /* add 1 for the length-match rank. */
3816 bv
.reserve (1 + args
.size ());
3818 /* First compare the lengths of the supplied lists.
3819 If there is a mismatch, set it to a high value. */
3821 /* pai/1997-06-03 FIXME: when we have debug info about default
3822 arguments and ellipsis parameter lists, we should consider those
3823 and rank the length-match more finely. */
3825 bv
.push_back ((args
.size () != parms
.size ())
3826 ? LENGTH_MISMATCH_BADNESS
3827 : EXACT_MATCH_BADNESS
);
3829 /* Now rank all the parameters of the candidate function. */
3830 size_t min_len
= std::min (parms
.size (), args
.size ());
3832 for (size_t i
= 0; i
< min_len
; i
++)
3833 bv
.push_back (rank_one_type (parms
[i
], value_type (args
[i
]),
3836 /* If more arguments than parameters, add dummy entries. */
3837 for (size_t i
= min_len
; i
< args
.size (); i
++)
3838 bv
.push_back (TOO_FEW_PARAMS_BADNESS
);
3843 /* Compare the names of two integer types, assuming that any sign
3844 qualifiers have been checked already. We do it this way because
3845 there may be an "int" in the name of one of the types. */
3848 integer_types_same_name_p (const char *first
, const char *second
)
3850 int first_p
, second_p
;
3852 /* If both are shorts, return 1; if neither is a short, keep
3854 first_p
= (strstr (first
, "short") != NULL
);
3855 second_p
= (strstr (second
, "short") != NULL
);
3856 if (first_p
&& second_p
)
3858 if (first_p
|| second_p
)
3861 /* Likewise for long. */
3862 first_p
= (strstr (first
, "long") != NULL
);
3863 second_p
= (strstr (second
, "long") != NULL
);
3864 if (first_p
&& second_p
)
3866 if (first_p
|| second_p
)
3869 /* Likewise for char. */
3870 first_p
= (strstr (first
, "char") != NULL
);
3871 second_p
= (strstr (second
, "char") != NULL
);
3872 if (first_p
&& second_p
)
3874 if (first_p
|| second_p
)
3877 /* They must both be ints. */
3881 /* Compares type A to type B. Returns true if they represent the same
3882 type, false otherwise. */
3885 types_equal (struct type
*a
, struct type
*b
)
3887 /* Identical type pointers. */
3888 /* However, this still doesn't catch all cases of same type for b
3889 and a. The reason is that builtin types are different from
3890 the same ones constructed from the object. */
3894 /* Resolve typedefs */
3895 if (a
->code () == TYPE_CODE_TYPEDEF
)
3896 a
= check_typedef (a
);
3897 if (b
->code () == TYPE_CODE_TYPEDEF
)
3898 b
= check_typedef (b
);
3900 /* If after resolving typedefs a and b are not of the same type
3901 code then they are not equal. */
3902 if (a
->code () != b
->code ())
3905 /* If a and b are both pointers types or both reference types then
3906 they are equal of the same type iff the objects they refer to are
3907 of the same type. */
3908 if (a
->code () == TYPE_CODE_PTR
3909 || a
->code () == TYPE_CODE_REF
)
3910 return types_equal (TYPE_TARGET_TYPE (a
),
3911 TYPE_TARGET_TYPE (b
));
3913 /* Well, damnit, if the names are exactly the same, I'll say they
3914 are exactly the same. This happens when we generate method
3915 stubs. The types won't point to the same address, but they
3916 really are the same. */
3918 if (a
->name () && b
->name ()
3919 && strcmp (a
->name (), b
->name ()) == 0)
3922 /* Check if identical after resolving typedefs. */
3926 /* Two function types are equal if their argument and return types
3928 if (a
->code () == TYPE_CODE_FUNC
)
3932 if (a
->num_fields () != b
->num_fields ())
3935 if (!types_equal (TYPE_TARGET_TYPE (a
), TYPE_TARGET_TYPE (b
)))
3938 for (i
= 0; i
< a
->num_fields (); ++i
)
3939 if (!types_equal (a
->field (i
).type (), b
->field (i
).type ()))
3948 /* Deep comparison of types. */
3950 /* An entry in the type-equality bcache. */
3952 struct type_equality_entry
3954 type_equality_entry (struct type
*t1
, struct type
*t2
)
3960 struct type
*type1
, *type2
;
3963 /* A helper function to compare two strings. Returns true if they are
3964 the same, false otherwise. Handles NULLs properly. */
3967 compare_maybe_null_strings (const char *s
, const char *t
)
3969 if (s
== NULL
|| t
== NULL
)
3971 return strcmp (s
, t
) == 0;
3974 /* A helper function for check_types_worklist that checks two types for
3975 "deep" equality. Returns true if the types are considered the
3976 same, false otherwise. */
3979 check_types_equal (struct type
*type1
, struct type
*type2
,
3980 std::vector
<type_equality_entry
> *worklist
)
3982 type1
= check_typedef (type1
);
3983 type2
= check_typedef (type2
);
3988 if (type1
->code () != type2
->code ()
3989 || TYPE_LENGTH (type1
) != TYPE_LENGTH (type2
)
3990 || TYPE_UNSIGNED (type1
) != TYPE_UNSIGNED (type2
)
3991 || TYPE_NOSIGN (type1
) != TYPE_NOSIGN (type2
)
3992 || TYPE_ENDIANITY_NOT_DEFAULT (type1
) != TYPE_ENDIANITY_NOT_DEFAULT (type2
)
3993 || TYPE_VARARGS (type1
) != TYPE_VARARGS (type2
)
3994 || TYPE_VECTOR (type1
) != TYPE_VECTOR (type2
)
3995 || TYPE_NOTTEXT (type1
) != TYPE_NOTTEXT (type2
)
3996 || TYPE_INSTANCE_FLAGS (type1
) != TYPE_INSTANCE_FLAGS (type2
)
3997 || type1
->num_fields () != type2
->num_fields ())
4000 if (!compare_maybe_null_strings (type1
->name (), type2
->name ()))
4002 if (!compare_maybe_null_strings (type1
->name (), type2
->name ()))
4005 if (type1
->code () == TYPE_CODE_RANGE
)
4007 if (*type1
->bounds () != *type2
->bounds ())
4014 for (i
= 0; i
< type1
->num_fields (); ++i
)
4016 const struct field
*field1
= &type1
->field (i
);
4017 const struct field
*field2
= &type2
->field (i
);
4019 if (FIELD_ARTIFICIAL (*field1
) != FIELD_ARTIFICIAL (*field2
)
4020 || FIELD_BITSIZE (*field1
) != FIELD_BITSIZE (*field2
)
4021 || FIELD_LOC_KIND (*field1
) != FIELD_LOC_KIND (*field2
))
4023 if (!compare_maybe_null_strings (FIELD_NAME (*field1
),
4024 FIELD_NAME (*field2
)))
4026 switch (FIELD_LOC_KIND (*field1
))
4028 case FIELD_LOC_KIND_BITPOS
:
4029 if (FIELD_BITPOS (*field1
) != FIELD_BITPOS (*field2
))
4032 case FIELD_LOC_KIND_ENUMVAL
:
4033 if (FIELD_ENUMVAL (*field1
) != FIELD_ENUMVAL (*field2
))
4036 case FIELD_LOC_KIND_PHYSADDR
:
4037 if (FIELD_STATIC_PHYSADDR (*field1
)
4038 != FIELD_STATIC_PHYSADDR (*field2
))
4041 case FIELD_LOC_KIND_PHYSNAME
:
4042 if (!compare_maybe_null_strings (FIELD_STATIC_PHYSNAME (*field1
),
4043 FIELD_STATIC_PHYSNAME (*field2
)))
4046 case FIELD_LOC_KIND_DWARF_BLOCK
:
4048 struct dwarf2_locexpr_baton
*block1
, *block2
;
4050 block1
= FIELD_DWARF_BLOCK (*field1
);
4051 block2
= FIELD_DWARF_BLOCK (*field2
);
4052 if (block1
->per_cu
!= block2
->per_cu
4053 || block1
->size
!= block2
->size
4054 || memcmp (block1
->data
, block2
->data
, block1
->size
) != 0)
4059 internal_error (__FILE__
, __LINE__
, _("Unsupported field kind "
4060 "%d by check_types_equal"),
4061 FIELD_LOC_KIND (*field1
));
4064 worklist
->emplace_back (field1
->type (), field2
->type ());
4068 if (TYPE_TARGET_TYPE (type1
) != NULL
)
4070 if (TYPE_TARGET_TYPE (type2
) == NULL
)
4073 worklist
->emplace_back (TYPE_TARGET_TYPE (type1
),
4074 TYPE_TARGET_TYPE (type2
));
4076 else if (TYPE_TARGET_TYPE (type2
) != NULL
)
4082 /* Check types on a worklist for equality. Returns false if any pair
4083 is not equal, true if they are all considered equal. */
4086 check_types_worklist (std::vector
<type_equality_entry
> *worklist
,
4089 while (!worklist
->empty ())
4093 struct type_equality_entry entry
= std::move (worklist
->back ());
4094 worklist
->pop_back ();
4096 /* If the type pair has already been visited, we know it is
4098 cache
->insert (&entry
, sizeof (entry
), &added
);
4102 if (!check_types_equal (entry
.type1
, entry
.type2
, worklist
))
4109 /* Return true if types TYPE1 and TYPE2 are equal, as determined by a
4110 "deep comparison". Otherwise return false. */
4113 types_deeply_equal (struct type
*type1
, struct type
*type2
)
4115 std::vector
<type_equality_entry
> worklist
;
4117 gdb_assert (type1
!= NULL
&& type2
!= NULL
);
4119 /* Early exit for the simple case. */
4123 gdb::bcache
cache (nullptr, nullptr);
4124 worklist
.emplace_back (type1
, type2
);
4125 return check_types_worklist (&worklist
, &cache
);
4128 /* Allocated status of type TYPE. Return zero if type TYPE is allocated.
4129 Otherwise return one. */
4132 type_not_allocated (const struct type
*type
)
4134 struct dynamic_prop
*prop
= TYPE_ALLOCATED_PROP (type
);
4136 return (prop
!= nullptr && prop
->kind () == PROP_CONST
4137 && prop
->const_val () == 0);
4140 /* Associated status of type TYPE. Return zero if type TYPE is associated.
4141 Otherwise return one. */
4144 type_not_associated (const struct type
*type
)
4146 struct dynamic_prop
*prop
= TYPE_ASSOCIATED_PROP (type
);
4148 return (prop
!= nullptr && prop
->kind () == PROP_CONST
4149 && prop
->const_val () == 0);
4152 /* rank_one_type helper for when PARM's type code is TYPE_CODE_PTR. */
4155 rank_one_type_parm_ptr (struct type
*parm
, struct type
*arg
, struct value
*value
)
4157 struct rank rank
= {0,0};
4159 switch (arg
->code ())
4163 /* Allowed pointer conversions are:
4164 (a) pointer to void-pointer conversion. */
4165 if (TYPE_TARGET_TYPE (parm
)->code () == TYPE_CODE_VOID
)
4166 return VOID_PTR_CONVERSION_BADNESS
;
4168 /* (b) pointer to ancestor-pointer conversion. */
4169 rank
.subrank
= distance_to_ancestor (TYPE_TARGET_TYPE (parm
),
4170 TYPE_TARGET_TYPE (arg
),
4172 if (rank
.subrank
>= 0)
4173 return sum_ranks (BASE_PTR_CONVERSION_BADNESS
, rank
);
4175 return INCOMPATIBLE_TYPE_BADNESS
;
4176 case TYPE_CODE_ARRAY
:
4178 struct type
*t1
= TYPE_TARGET_TYPE (parm
);
4179 struct type
*t2
= TYPE_TARGET_TYPE (arg
);
4181 if (types_equal (t1
, t2
))
4183 /* Make sure they are CV equal. */
4184 if (TYPE_CONST (t1
) != TYPE_CONST (t2
))
4185 rank
.subrank
|= CV_CONVERSION_CONST
;
4186 if (TYPE_VOLATILE (t1
) != TYPE_VOLATILE (t2
))
4187 rank
.subrank
|= CV_CONVERSION_VOLATILE
;
4188 if (rank
.subrank
!= 0)
4189 return sum_ranks (CV_CONVERSION_BADNESS
, rank
);
4190 return EXACT_MATCH_BADNESS
;
4192 return INCOMPATIBLE_TYPE_BADNESS
;
4194 case TYPE_CODE_FUNC
:
4195 return rank_one_type (TYPE_TARGET_TYPE (parm
), arg
, NULL
);
4197 if (value
!= NULL
&& value_type (value
)->code () == TYPE_CODE_INT
)
4199 if (value_as_long (value
) == 0)
4201 /* Null pointer conversion: allow it to be cast to a pointer.
4202 [4.10.1 of C++ standard draft n3290] */
4203 return NULL_POINTER_CONVERSION_BADNESS
;
4207 /* If type checking is disabled, allow the conversion. */
4208 if (!strict_type_checking
)
4209 return NS_INTEGER_POINTER_CONVERSION_BADNESS
;
4213 case TYPE_CODE_ENUM
:
4214 case TYPE_CODE_FLAGS
:
4215 case TYPE_CODE_CHAR
:
4216 case TYPE_CODE_RANGE
:
4217 case TYPE_CODE_BOOL
:
4219 return INCOMPATIBLE_TYPE_BADNESS
;
4223 /* rank_one_type helper for when PARM's type code is TYPE_CODE_ARRAY. */
4226 rank_one_type_parm_array (struct type
*parm
, struct type
*arg
, struct value
*value
)
4228 switch (arg
->code ())
4231 case TYPE_CODE_ARRAY
:
4232 return rank_one_type (TYPE_TARGET_TYPE (parm
),
4233 TYPE_TARGET_TYPE (arg
), NULL
);
4235 return INCOMPATIBLE_TYPE_BADNESS
;
4239 /* rank_one_type helper for when PARM's type code is TYPE_CODE_FUNC. */
4242 rank_one_type_parm_func (struct type
*parm
, struct type
*arg
, struct value
*value
)
4244 switch (arg
->code ())
4246 case TYPE_CODE_PTR
: /* funcptr -> func */
4247 return rank_one_type (parm
, TYPE_TARGET_TYPE (arg
), NULL
);
4249 return INCOMPATIBLE_TYPE_BADNESS
;
4253 /* rank_one_type helper for when PARM's type code is TYPE_CODE_INT. */
4256 rank_one_type_parm_int (struct type
*parm
, struct type
*arg
, struct value
*value
)
4258 switch (arg
->code ())
4261 if (TYPE_LENGTH (arg
) == TYPE_LENGTH (parm
))
4263 /* Deal with signed, unsigned, and plain chars and
4264 signed and unsigned ints. */
4265 if (TYPE_NOSIGN (parm
))
4267 /* This case only for character types. */
4268 if (TYPE_NOSIGN (arg
))
4269 return EXACT_MATCH_BADNESS
; /* plain char -> plain char */
4270 else /* signed/unsigned char -> plain char */
4271 return INTEGER_CONVERSION_BADNESS
;
4273 else if (TYPE_UNSIGNED (parm
))
4275 if (TYPE_UNSIGNED (arg
))
4277 /* unsigned int -> unsigned int, or
4278 unsigned long -> unsigned long */
4279 if (integer_types_same_name_p (parm
->name (),
4281 return EXACT_MATCH_BADNESS
;
4282 else if (integer_types_same_name_p (arg
->name (),
4284 && integer_types_same_name_p (parm
->name (),
4286 /* unsigned int -> unsigned long */
4287 return INTEGER_PROMOTION_BADNESS
;
4289 /* unsigned long -> unsigned int */
4290 return INTEGER_CONVERSION_BADNESS
;
4294 if (integer_types_same_name_p (arg
->name (),
4296 && integer_types_same_name_p (parm
->name (),
4298 /* signed long -> unsigned int */
4299 return INTEGER_CONVERSION_BADNESS
;
4301 /* signed int/long -> unsigned int/long */
4302 return INTEGER_CONVERSION_BADNESS
;
4305 else if (!TYPE_NOSIGN (arg
) && !TYPE_UNSIGNED (arg
))
4307 if (integer_types_same_name_p (parm
->name (),
4309 return EXACT_MATCH_BADNESS
;
4310 else if (integer_types_same_name_p (arg
->name (),
4312 && integer_types_same_name_p (parm
->name (),
4314 return INTEGER_PROMOTION_BADNESS
;
4316 return INTEGER_CONVERSION_BADNESS
;
4319 return INTEGER_CONVERSION_BADNESS
;
4321 else if (TYPE_LENGTH (arg
) < TYPE_LENGTH (parm
))
4322 return INTEGER_PROMOTION_BADNESS
;
4324 return INTEGER_CONVERSION_BADNESS
;
4325 case TYPE_CODE_ENUM
:
4326 case TYPE_CODE_FLAGS
:
4327 case TYPE_CODE_CHAR
:
4328 case TYPE_CODE_RANGE
:
4329 case TYPE_CODE_BOOL
:
4330 if (TYPE_DECLARED_CLASS (arg
))
4331 return INCOMPATIBLE_TYPE_BADNESS
;
4332 return INTEGER_PROMOTION_BADNESS
;
4334 return INT_FLOAT_CONVERSION_BADNESS
;
4336 return NS_POINTER_CONVERSION_BADNESS
;
4338 return INCOMPATIBLE_TYPE_BADNESS
;
4342 /* rank_one_type helper for when PARM's type code is TYPE_CODE_ENUM. */
4345 rank_one_type_parm_enum (struct type
*parm
, struct type
*arg
, struct value
*value
)
4347 switch (arg
->code ())
4350 case TYPE_CODE_CHAR
:
4351 case TYPE_CODE_RANGE
:
4352 case TYPE_CODE_BOOL
:
4353 case TYPE_CODE_ENUM
:
4354 if (TYPE_DECLARED_CLASS (parm
) || TYPE_DECLARED_CLASS (arg
))
4355 return INCOMPATIBLE_TYPE_BADNESS
;
4356 return INTEGER_CONVERSION_BADNESS
;
4358 return INT_FLOAT_CONVERSION_BADNESS
;
4360 return INCOMPATIBLE_TYPE_BADNESS
;
4364 /* rank_one_type helper for when PARM's type code is TYPE_CODE_CHAR. */
4367 rank_one_type_parm_char (struct type
*parm
, struct type
*arg
, struct value
*value
)
4369 switch (arg
->code ())
4371 case TYPE_CODE_RANGE
:
4372 case TYPE_CODE_BOOL
:
4373 case TYPE_CODE_ENUM
:
4374 if (TYPE_DECLARED_CLASS (arg
))
4375 return INCOMPATIBLE_TYPE_BADNESS
;
4376 return INTEGER_CONVERSION_BADNESS
;
4378 return INT_FLOAT_CONVERSION_BADNESS
;
4380 if (TYPE_LENGTH (arg
) > TYPE_LENGTH (parm
))
4381 return INTEGER_CONVERSION_BADNESS
;
4382 else if (TYPE_LENGTH (arg
) < TYPE_LENGTH (parm
))
4383 return INTEGER_PROMOTION_BADNESS
;
4385 case TYPE_CODE_CHAR
:
4386 /* Deal with signed, unsigned, and plain chars for C++ and
4387 with int cases falling through from previous case. */
4388 if (TYPE_NOSIGN (parm
))
4390 if (TYPE_NOSIGN (arg
))
4391 return EXACT_MATCH_BADNESS
;
4393 return INTEGER_CONVERSION_BADNESS
;
4395 else if (TYPE_UNSIGNED (parm
))
4397 if (TYPE_UNSIGNED (arg
))
4398 return EXACT_MATCH_BADNESS
;
4400 return INTEGER_PROMOTION_BADNESS
;
4402 else if (!TYPE_NOSIGN (arg
) && !TYPE_UNSIGNED (arg
))
4403 return EXACT_MATCH_BADNESS
;
4405 return INTEGER_CONVERSION_BADNESS
;
4407 return INCOMPATIBLE_TYPE_BADNESS
;
4411 /* rank_one_type helper for when PARM's type code is TYPE_CODE_RANGE. */
4414 rank_one_type_parm_range (struct type
*parm
, struct type
*arg
, struct value
*value
)
4416 switch (arg
->code ())
4419 case TYPE_CODE_CHAR
:
4420 case TYPE_CODE_RANGE
:
4421 case TYPE_CODE_BOOL
:
4422 case TYPE_CODE_ENUM
:
4423 return INTEGER_CONVERSION_BADNESS
;
4425 return INT_FLOAT_CONVERSION_BADNESS
;
4427 return INCOMPATIBLE_TYPE_BADNESS
;
4431 /* rank_one_type helper for when PARM's type code is TYPE_CODE_BOOL. */
4434 rank_one_type_parm_bool (struct type
*parm
, struct type
*arg
, struct value
*value
)
4436 switch (arg
->code ())
4438 /* n3290 draft, section 4.12.1 (conv.bool):
4440 "A prvalue of arithmetic, unscoped enumeration, pointer, or
4441 pointer to member type can be converted to a prvalue of type
4442 bool. A zero value, null pointer value, or null member pointer
4443 value is converted to false; any other value is converted to
4444 true. A prvalue of type std::nullptr_t can be converted to a
4445 prvalue of type bool; the resulting value is false." */
4447 case TYPE_CODE_CHAR
:
4448 case TYPE_CODE_ENUM
:
4450 case TYPE_CODE_MEMBERPTR
:
4452 return BOOL_CONVERSION_BADNESS
;
4453 case TYPE_CODE_RANGE
:
4454 return INCOMPATIBLE_TYPE_BADNESS
;
4455 case TYPE_CODE_BOOL
:
4456 return EXACT_MATCH_BADNESS
;
4458 return INCOMPATIBLE_TYPE_BADNESS
;
4462 /* rank_one_type helper for when PARM's type code is TYPE_CODE_FLOAT. */
4465 rank_one_type_parm_float (struct type
*parm
, struct type
*arg
, struct value
*value
)
4467 switch (arg
->code ())
4470 if (TYPE_LENGTH (arg
) < TYPE_LENGTH (parm
))
4471 return FLOAT_PROMOTION_BADNESS
;
4472 else if (TYPE_LENGTH (arg
) == TYPE_LENGTH (parm
))
4473 return EXACT_MATCH_BADNESS
;
4475 return FLOAT_CONVERSION_BADNESS
;
4477 case TYPE_CODE_BOOL
:
4478 case TYPE_CODE_ENUM
:
4479 case TYPE_CODE_RANGE
:
4480 case TYPE_CODE_CHAR
:
4481 return INT_FLOAT_CONVERSION_BADNESS
;
4483 return INCOMPATIBLE_TYPE_BADNESS
;
4487 /* rank_one_type helper for when PARM's type code is TYPE_CODE_COMPLEX. */
4490 rank_one_type_parm_complex (struct type
*parm
, struct type
*arg
, struct value
*value
)
4492 switch (arg
->code ())
4493 { /* Strictly not needed for C++, but... */
4495 return FLOAT_PROMOTION_BADNESS
;
4496 case TYPE_CODE_COMPLEX
:
4497 return EXACT_MATCH_BADNESS
;
4499 return INCOMPATIBLE_TYPE_BADNESS
;
4503 /* rank_one_type helper for when PARM's type code is TYPE_CODE_STRUCT. */
4506 rank_one_type_parm_struct (struct type
*parm
, struct type
*arg
, struct value
*value
)
4508 struct rank rank
= {0, 0};
4510 switch (arg
->code ())
4512 case TYPE_CODE_STRUCT
:
4513 /* Check for derivation */
4514 rank
.subrank
= distance_to_ancestor (parm
, arg
, 0);
4515 if (rank
.subrank
>= 0)
4516 return sum_ranks (BASE_CONVERSION_BADNESS
, rank
);
4519 return INCOMPATIBLE_TYPE_BADNESS
;
4523 /* rank_one_type helper for when PARM's type code is TYPE_CODE_SET. */
4526 rank_one_type_parm_set (struct type
*parm
, struct type
*arg
, struct value
*value
)
4528 switch (arg
->code ())
4532 return rank_one_type (parm
->field (0).type (),
4533 arg
->field (0).type (), NULL
);
4535 return INCOMPATIBLE_TYPE_BADNESS
;
4539 /* Compare one type (PARM) for compatibility with another (ARG).
4540 * PARM is intended to be the parameter type of a function; and
4541 * ARG is the supplied argument's type. This function tests if
4542 * the latter can be converted to the former.
4543 * VALUE is the argument's value or NULL if none (or called recursively)
4545 * Return 0 if they are identical types;
4546 * Otherwise, return an integer which corresponds to how compatible
4547 * PARM is to ARG. The higher the return value, the worse the match.
4548 * Generally the "bad" conversions are all uniformly assigned a 100. */
4551 rank_one_type (struct type
*parm
, struct type
*arg
, struct value
*value
)
4553 struct rank rank
= {0,0};
4555 /* Resolve typedefs */
4556 if (parm
->code () == TYPE_CODE_TYPEDEF
)
4557 parm
= check_typedef (parm
);
4558 if (arg
->code () == TYPE_CODE_TYPEDEF
)
4559 arg
= check_typedef (arg
);
4561 if (TYPE_IS_REFERENCE (parm
) && value
!= NULL
)
4563 if (VALUE_LVAL (value
) == not_lval
)
4565 /* Rvalues should preferably bind to rvalue references or const
4566 lvalue references. */
4567 if (parm
->code () == TYPE_CODE_RVALUE_REF
)
4568 rank
.subrank
= REFERENCE_CONVERSION_RVALUE
;
4569 else if (TYPE_CONST (TYPE_TARGET_TYPE (parm
)))
4570 rank
.subrank
= REFERENCE_CONVERSION_CONST_LVALUE
;
4572 return INCOMPATIBLE_TYPE_BADNESS
;
4573 return sum_ranks (rank
, REFERENCE_CONVERSION_BADNESS
);
4577 /* It's illegal to pass an lvalue as an rvalue. */
4578 if (parm
->code () == TYPE_CODE_RVALUE_REF
)
4579 return INCOMPATIBLE_TYPE_BADNESS
;
4583 if (types_equal (parm
, arg
))
4585 struct type
*t1
= parm
;
4586 struct type
*t2
= arg
;
4588 /* For pointers and references, compare target type. */
4589 if (parm
->code () == TYPE_CODE_PTR
|| TYPE_IS_REFERENCE (parm
))
4591 t1
= TYPE_TARGET_TYPE (parm
);
4592 t2
= TYPE_TARGET_TYPE (arg
);
4595 /* Make sure they are CV equal, too. */
4596 if (TYPE_CONST (t1
) != TYPE_CONST (t2
))
4597 rank
.subrank
|= CV_CONVERSION_CONST
;
4598 if (TYPE_VOLATILE (t1
) != TYPE_VOLATILE (t2
))
4599 rank
.subrank
|= CV_CONVERSION_VOLATILE
;
4600 if (rank
.subrank
!= 0)
4601 return sum_ranks (CV_CONVERSION_BADNESS
, rank
);
4602 return EXACT_MATCH_BADNESS
;
4605 /* See through references, since we can almost make non-references
4608 if (TYPE_IS_REFERENCE (arg
))
4609 return (sum_ranks (rank_one_type (parm
, TYPE_TARGET_TYPE (arg
), NULL
),
4610 REFERENCE_SEE_THROUGH_BADNESS
));
4611 if (TYPE_IS_REFERENCE (parm
))
4612 return (sum_ranks (rank_one_type (TYPE_TARGET_TYPE (parm
), arg
, NULL
),
4613 REFERENCE_SEE_THROUGH_BADNESS
));
4615 /* Debugging only. */
4616 fprintf_filtered (gdb_stderr
,
4617 "------ Arg is %s [%d], parm is %s [%d]\n",
4618 arg
->name (), arg
->code (),
4619 parm
->name (), parm
->code ());
4621 /* x -> y means arg of type x being supplied for parameter of type y. */
4623 switch (parm
->code ())
4626 return rank_one_type_parm_ptr (parm
, arg
, value
);
4627 case TYPE_CODE_ARRAY
:
4628 return rank_one_type_parm_array (parm
, arg
, value
);
4629 case TYPE_CODE_FUNC
:
4630 return rank_one_type_parm_func (parm
, arg
, value
);
4632 return rank_one_type_parm_int (parm
, arg
, value
);
4633 case TYPE_CODE_ENUM
:
4634 return rank_one_type_parm_enum (parm
, arg
, value
);
4635 case TYPE_CODE_CHAR
:
4636 return rank_one_type_parm_char (parm
, arg
, value
);
4637 case TYPE_CODE_RANGE
:
4638 return rank_one_type_parm_range (parm
, arg
, value
);
4639 case TYPE_CODE_BOOL
:
4640 return rank_one_type_parm_bool (parm
, arg
, value
);
4642 return rank_one_type_parm_float (parm
, arg
, value
);
4643 case TYPE_CODE_COMPLEX
:
4644 return rank_one_type_parm_complex (parm
, arg
, value
);
4645 case TYPE_CODE_STRUCT
:
4646 return rank_one_type_parm_struct (parm
, arg
, value
);
4648 return rank_one_type_parm_set (parm
, arg
, value
);
4650 return INCOMPATIBLE_TYPE_BADNESS
;
4651 } /* switch (arg->code ()) */
4654 /* End of functions for overload resolution. */
4656 /* Routines to pretty-print types. */
4659 print_bit_vector (B_TYPE
*bits
, int nbits
)
4663 for (bitno
= 0; bitno
< nbits
; bitno
++)
4665 if ((bitno
% 8) == 0)
4667 puts_filtered (" ");
4669 if (B_TST (bits
, bitno
))
4670 printf_filtered (("1"));
4672 printf_filtered (("0"));
4676 /* Note the first arg should be the "this" pointer, we may not want to
4677 include it since we may get into a infinitely recursive
4681 print_args (struct field
*args
, int nargs
, int spaces
)
4687 for (i
= 0; i
< nargs
; i
++)
4689 printfi_filtered (spaces
, "[%d] name '%s'\n", i
,
4690 args
[i
].name
!= NULL
? args
[i
].name
: "<NULL>");
4691 recursive_dump_type (args
[i
].type (), spaces
+ 2);
4697 field_is_static (struct field
*f
)
4699 /* "static" fields are the fields whose location is not relative
4700 to the address of the enclosing struct. It would be nice to
4701 have a dedicated flag that would be set for static fields when
4702 the type is being created. But in practice, checking the field
4703 loc_kind should give us an accurate answer. */
4704 return (FIELD_LOC_KIND (*f
) == FIELD_LOC_KIND_PHYSNAME
4705 || FIELD_LOC_KIND (*f
) == FIELD_LOC_KIND_PHYSADDR
);
4709 dump_fn_fieldlists (struct type
*type
, int spaces
)
4715 printfi_filtered (spaces
, "fn_fieldlists ");
4716 gdb_print_host_address (TYPE_FN_FIELDLISTS (type
), gdb_stdout
);
4717 printf_filtered ("\n");
4718 for (method_idx
= 0; method_idx
< TYPE_NFN_FIELDS (type
); method_idx
++)
4720 f
= TYPE_FN_FIELDLIST1 (type
, method_idx
);
4721 printfi_filtered (spaces
+ 2, "[%d] name '%s' (",
4723 TYPE_FN_FIELDLIST_NAME (type
, method_idx
));
4724 gdb_print_host_address (TYPE_FN_FIELDLIST_NAME (type
, method_idx
),
4726 printf_filtered (_(") length %d\n"),
4727 TYPE_FN_FIELDLIST_LENGTH (type
, method_idx
));
4728 for (overload_idx
= 0;
4729 overload_idx
< TYPE_FN_FIELDLIST_LENGTH (type
, method_idx
);
4732 printfi_filtered (spaces
+ 4, "[%d] physname '%s' (",
4734 TYPE_FN_FIELD_PHYSNAME (f
, overload_idx
));
4735 gdb_print_host_address (TYPE_FN_FIELD_PHYSNAME (f
, overload_idx
),
4737 printf_filtered (")\n");
4738 printfi_filtered (spaces
+ 8, "type ");
4739 gdb_print_host_address (TYPE_FN_FIELD_TYPE (f
, overload_idx
),
4741 printf_filtered ("\n");
4743 recursive_dump_type (TYPE_FN_FIELD_TYPE (f
, overload_idx
),
4746 printfi_filtered (spaces
+ 8, "args ");
4747 gdb_print_host_address (TYPE_FN_FIELD_ARGS (f
, overload_idx
),
4749 printf_filtered ("\n");
4750 print_args (TYPE_FN_FIELD_ARGS (f
, overload_idx
),
4751 TYPE_FN_FIELD_TYPE (f
, overload_idx
)->num_fields (),
4753 printfi_filtered (spaces
+ 8, "fcontext ");
4754 gdb_print_host_address (TYPE_FN_FIELD_FCONTEXT (f
, overload_idx
),
4756 printf_filtered ("\n");
4758 printfi_filtered (spaces
+ 8, "is_const %d\n",
4759 TYPE_FN_FIELD_CONST (f
, overload_idx
));
4760 printfi_filtered (spaces
+ 8, "is_volatile %d\n",
4761 TYPE_FN_FIELD_VOLATILE (f
, overload_idx
));
4762 printfi_filtered (spaces
+ 8, "is_private %d\n",
4763 TYPE_FN_FIELD_PRIVATE (f
, overload_idx
));
4764 printfi_filtered (spaces
+ 8, "is_protected %d\n",
4765 TYPE_FN_FIELD_PROTECTED (f
, overload_idx
));
4766 printfi_filtered (spaces
+ 8, "is_stub %d\n",
4767 TYPE_FN_FIELD_STUB (f
, overload_idx
));
4768 printfi_filtered (spaces
+ 8, "defaulted %d\n",
4769 TYPE_FN_FIELD_DEFAULTED (f
, overload_idx
));
4770 printfi_filtered (spaces
+ 8, "is_deleted %d\n",
4771 TYPE_FN_FIELD_DELETED (f
, overload_idx
));
4772 printfi_filtered (spaces
+ 8, "voffset %u\n",
4773 TYPE_FN_FIELD_VOFFSET (f
, overload_idx
));
4779 print_cplus_stuff (struct type
*type
, int spaces
)
4781 printfi_filtered (spaces
, "vptr_fieldno %d\n", TYPE_VPTR_FIELDNO (type
));
4782 printfi_filtered (spaces
, "vptr_basetype ");
4783 gdb_print_host_address (TYPE_VPTR_BASETYPE (type
), gdb_stdout
);
4784 puts_filtered ("\n");
4785 if (TYPE_VPTR_BASETYPE (type
) != NULL
)
4786 recursive_dump_type (TYPE_VPTR_BASETYPE (type
), spaces
+ 2);
4788 printfi_filtered (spaces
, "n_baseclasses %d\n",
4789 TYPE_N_BASECLASSES (type
));
4790 printfi_filtered (spaces
, "nfn_fields %d\n",
4791 TYPE_NFN_FIELDS (type
));
4792 if (TYPE_N_BASECLASSES (type
) > 0)
4794 printfi_filtered (spaces
, "virtual_field_bits (%d bits at *",
4795 TYPE_N_BASECLASSES (type
));
4796 gdb_print_host_address (TYPE_FIELD_VIRTUAL_BITS (type
),
4798 printf_filtered (")");
4800 print_bit_vector (TYPE_FIELD_VIRTUAL_BITS (type
),
4801 TYPE_N_BASECLASSES (type
));
4802 puts_filtered ("\n");
4804 if (type
->num_fields () > 0)
4806 if (TYPE_FIELD_PRIVATE_BITS (type
) != NULL
)
4808 printfi_filtered (spaces
,
4809 "private_field_bits (%d bits at *",
4810 type
->num_fields ());
4811 gdb_print_host_address (TYPE_FIELD_PRIVATE_BITS (type
),
4813 printf_filtered (")");
4814 print_bit_vector (TYPE_FIELD_PRIVATE_BITS (type
),
4815 type
->num_fields ());
4816 puts_filtered ("\n");
4818 if (TYPE_FIELD_PROTECTED_BITS (type
) != NULL
)
4820 printfi_filtered (spaces
,
4821 "protected_field_bits (%d bits at *",
4822 type
->num_fields ());
4823 gdb_print_host_address (TYPE_FIELD_PROTECTED_BITS (type
),
4825 printf_filtered (")");
4826 print_bit_vector (TYPE_FIELD_PROTECTED_BITS (type
),
4827 type
->num_fields ());
4828 puts_filtered ("\n");
4831 if (TYPE_NFN_FIELDS (type
) > 0)
4833 dump_fn_fieldlists (type
, spaces
);
4836 printfi_filtered (spaces
, "calling_convention %d\n",
4837 TYPE_CPLUS_CALLING_CONVENTION (type
));
4840 /* Print the contents of the TYPE's type_specific union, assuming that
4841 its type-specific kind is TYPE_SPECIFIC_GNAT_STUFF. */
4844 print_gnat_stuff (struct type
*type
, int spaces
)
4846 struct type
*descriptive_type
= TYPE_DESCRIPTIVE_TYPE (type
);
4848 if (descriptive_type
== NULL
)
4849 printfi_filtered (spaces
+ 2, "no descriptive type\n");
4852 printfi_filtered (spaces
+ 2, "descriptive type\n");
4853 recursive_dump_type (descriptive_type
, spaces
+ 4);
4857 static struct obstack dont_print_type_obstack
;
4859 /* Print the dynamic_prop PROP. */
4862 dump_dynamic_prop (dynamic_prop
const& prop
)
4864 switch (prop
.kind ())
4867 printf_filtered ("%s", plongest (prop
.const_val ()));
4869 case PROP_UNDEFINED
:
4870 printf_filtered ("(undefined)");
4874 printf_filtered ("(dynamic)");
4877 gdb_assert_not_reached ("unhandled prop kind");
4883 recursive_dump_type (struct type
*type
, int spaces
)
4888 obstack_begin (&dont_print_type_obstack
, 0);
4890 if (type
->num_fields () > 0
4891 || (HAVE_CPLUS_STRUCT (type
) && TYPE_NFN_FIELDS (type
) > 0))
4893 struct type
**first_dont_print
4894 = (struct type
**) obstack_base (&dont_print_type_obstack
);
4896 int i
= (struct type
**)
4897 obstack_next_free (&dont_print_type_obstack
) - first_dont_print
;
4901 if (type
== first_dont_print
[i
])
4903 printfi_filtered (spaces
, "type node ");
4904 gdb_print_host_address (type
, gdb_stdout
);
4905 printf_filtered (_(" <same as already seen type>\n"));
4910 obstack_ptr_grow (&dont_print_type_obstack
, type
);
4913 printfi_filtered (spaces
, "type node ");
4914 gdb_print_host_address (type
, gdb_stdout
);
4915 printf_filtered ("\n");
4916 printfi_filtered (spaces
, "name '%s' (",
4917 type
->name () ? type
->name () : "<NULL>");
4918 gdb_print_host_address (type
->name (), gdb_stdout
);
4919 printf_filtered (")\n");
4920 printfi_filtered (spaces
, "code 0x%x ", type
->code ());
4921 switch (type
->code ())
4923 case TYPE_CODE_UNDEF
:
4924 printf_filtered ("(TYPE_CODE_UNDEF)");
4927 printf_filtered ("(TYPE_CODE_PTR)");
4929 case TYPE_CODE_ARRAY
:
4930 printf_filtered ("(TYPE_CODE_ARRAY)");
4932 case TYPE_CODE_STRUCT
:
4933 printf_filtered ("(TYPE_CODE_STRUCT)");
4935 case TYPE_CODE_UNION
:
4936 printf_filtered ("(TYPE_CODE_UNION)");
4938 case TYPE_CODE_ENUM
:
4939 printf_filtered ("(TYPE_CODE_ENUM)");
4941 case TYPE_CODE_FLAGS
:
4942 printf_filtered ("(TYPE_CODE_FLAGS)");
4944 case TYPE_CODE_FUNC
:
4945 printf_filtered ("(TYPE_CODE_FUNC)");
4948 printf_filtered ("(TYPE_CODE_INT)");
4951 printf_filtered ("(TYPE_CODE_FLT)");
4953 case TYPE_CODE_VOID
:
4954 printf_filtered ("(TYPE_CODE_VOID)");
4957 printf_filtered ("(TYPE_CODE_SET)");
4959 case TYPE_CODE_RANGE
:
4960 printf_filtered ("(TYPE_CODE_RANGE)");
4962 case TYPE_CODE_STRING
:
4963 printf_filtered ("(TYPE_CODE_STRING)");
4965 case TYPE_CODE_ERROR
:
4966 printf_filtered ("(TYPE_CODE_ERROR)");
4968 case TYPE_CODE_MEMBERPTR
:
4969 printf_filtered ("(TYPE_CODE_MEMBERPTR)");
4971 case TYPE_CODE_METHODPTR
:
4972 printf_filtered ("(TYPE_CODE_METHODPTR)");
4974 case TYPE_CODE_METHOD
:
4975 printf_filtered ("(TYPE_CODE_METHOD)");
4978 printf_filtered ("(TYPE_CODE_REF)");
4980 case TYPE_CODE_CHAR
:
4981 printf_filtered ("(TYPE_CODE_CHAR)");
4983 case TYPE_CODE_BOOL
:
4984 printf_filtered ("(TYPE_CODE_BOOL)");
4986 case TYPE_CODE_COMPLEX
:
4987 printf_filtered ("(TYPE_CODE_COMPLEX)");
4989 case TYPE_CODE_TYPEDEF
:
4990 printf_filtered ("(TYPE_CODE_TYPEDEF)");
4992 case TYPE_CODE_NAMESPACE
:
4993 printf_filtered ("(TYPE_CODE_NAMESPACE)");
4996 printf_filtered ("(UNKNOWN TYPE CODE)");
4999 puts_filtered ("\n");
5000 printfi_filtered (spaces
, "length %s\n", pulongest (TYPE_LENGTH (type
)));
5001 if (TYPE_OBJFILE_OWNED (type
))
5003 printfi_filtered (spaces
, "objfile ");
5004 gdb_print_host_address (TYPE_OWNER (type
).objfile
, gdb_stdout
);
5008 printfi_filtered (spaces
, "gdbarch ");
5009 gdb_print_host_address (TYPE_OWNER (type
).gdbarch
, gdb_stdout
);
5011 printf_filtered ("\n");
5012 printfi_filtered (spaces
, "target_type ");
5013 gdb_print_host_address (TYPE_TARGET_TYPE (type
), gdb_stdout
);
5014 printf_filtered ("\n");
5015 if (TYPE_TARGET_TYPE (type
) != NULL
)
5017 recursive_dump_type (TYPE_TARGET_TYPE (type
), spaces
+ 2);
5019 printfi_filtered (spaces
, "pointer_type ");
5020 gdb_print_host_address (TYPE_POINTER_TYPE (type
), gdb_stdout
);
5021 printf_filtered ("\n");
5022 printfi_filtered (spaces
, "reference_type ");
5023 gdb_print_host_address (TYPE_REFERENCE_TYPE (type
), gdb_stdout
);
5024 printf_filtered ("\n");
5025 printfi_filtered (spaces
, "type_chain ");
5026 gdb_print_host_address (TYPE_CHAIN (type
), gdb_stdout
);
5027 printf_filtered ("\n");
5028 printfi_filtered (spaces
, "instance_flags 0x%x",
5029 TYPE_INSTANCE_FLAGS (type
));
5030 if (TYPE_CONST (type
))
5032 puts_filtered (" TYPE_CONST");
5034 if (TYPE_VOLATILE (type
))
5036 puts_filtered (" TYPE_VOLATILE");
5038 if (TYPE_CODE_SPACE (type
))
5040 puts_filtered (" TYPE_CODE_SPACE");
5042 if (TYPE_DATA_SPACE (type
))
5044 puts_filtered (" TYPE_DATA_SPACE");
5046 if (TYPE_ADDRESS_CLASS_1 (type
))
5048 puts_filtered (" TYPE_ADDRESS_CLASS_1");
5050 if (TYPE_ADDRESS_CLASS_2 (type
))
5052 puts_filtered (" TYPE_ADDRESS_CLASS_2");
5054 if (TYPE_RESTRICT (type
))
5056 puts_filtered (" TYPE_RESTRICT");
5058 if (TYPE_ATOMIC (type
))
5060 puts_filtered (" TYPE_ATOMIC");
5062 puts_filtered ("\n");
5064 printfi_filtered (spaces
, "flags");
5065 if (TYPE_UNSIGNED (type
))
5067 puts_filtered (" TYPE_UNSIGNED");
5069 if (TYPE_NOSIGN (type
))
5071 puts_filtered (" TYPE_NOSIGN");
5073 if (TYPE_ENDIANITY_NOT_DEFAULT (type
))
5075 puts_filtered (" TYPE_ENDIANITY_NOT_DEFAULT");
5077 if (TYPE_STUB (type
))
5079 puts_filtered (" TYPE_STUB");
5081 if (TYPE_TARGET_STUB (type
))
5083 puts_filtered (" TYPE_TARGET_STUB");
5085 if (TYPE_PROTOTYPED (type
))
5087 puts_filtered (" TYPE_PROTOTYPED");
5089 if (TYPE_VARARGS (type
))
5091 puts_filtered (" TYPE_VARARGS");
5093 /* This is used for things like AltiVec registers on ppc. Gcc emits
5094 an attribute for the array type, which tells whether or not we
5095 have a vector, instead of a regular array. */
5096 if (TYPE_VECTOR (type
))
5098 puts_filtered (" TYPE_VECTOR");
5100 if (TYPE_FIXED_INSTANCE (type
))
5102 puts_filtered (" TYPE_FIXED_INSTANCE");
5104 if (TYPE_STUB_SUPPORTED (type
))
5106 puts_filtered (" TYPE_STUB_SUPPORTED");
5108 if (TYPE_NOTTEXT (type
))
5110 puts_filtered (" TYPE_NOTTEXT");
5112 puts_filtered ("\n");
5113 printfi_filtered (spaces
, "nfields %d ", type
->num_fields ());
5114 gdb_print_host_address (type
->fields (), gdb_stdout
);
5115 puts_filtered ("\n");
5116 for (idx
= 0; idx
< type
->num_fields (); idx
++)
5118 if (type
->code () == TYPE_CODE_ENUM
)
5119 printfi_filtered (spaces
+ 2,
5120 "[%d] enumval %s type ",
5121 idx
, plongest (TYPE_FIELD_ENUMVAL (type
, idx
)));
5123 printfi_filtered (spaces
+ 2,
5124 "[%d] bitpos %s bitsize %d type ",
5125 idx
, plongest (TYPE_FIELD_BITPOS (type
, idx
)),
5126 TYPE_FIELD_BITSIZE (type
, idx
));
5127 gdb_print_host_address (type
->field (idx
).type (), gdb_stdout
);
5128 printf_filtered (" name '%s' (",
5129 TYPE_FIELD_NAME (type
, idx
) != NULL
5130 ? TYPE_FIELD_NAME (type
, idx
)
5132 gdb_print_host_address (TYPE_FIELD_NAME (type
, idx
), gdb_stdout
);
5133 printf_filtered (")\n");
5134 if (type
->field (idx
).type () != NULL
)
5136 recursive_dump_type (type
->field (idx
).type (), spaces
+ 4);
5139 if (type
->code () == TYPE_CODE_RANGE
)
5141 printfi_filtered (spaces
, "low ");
5142 dump_dynamic_prop (type
->bounds ()->low
);
5143 printf_filtered (" high ");
5144 dump_dynamic_prop (type
->bounds ()->high
);
5145 printf_filtered ("\n");
5148 switch (TYPE_SPECIFIC_FIELD (type
))
5150 case TYPE_SPECIFIC_CPLUS_STUFF
:
5151 printfi_filtered (spaces
, "cplus_stuff ");
5152 gdb_print_host_address (TYPE_CPLUS_SPECIFIC (type
),
5154 puts_filtered ("\n");
5155 print_cplus_stuff (type
, spaces
);
5158 case TYPE_SPECIFIC_GNAT_STUFF
:
5159 printfi_filtered (spaces
, "gnat_stuff ");
5160 gdb_print_host_address (TYPE_GNAT_SPECIFIC (type
), gdb_stdout
);
5161 puts_filtered ("\n");
5162 print_gnat_stuff (type
, spaces
);
5165 case TYPE_SPECIFIC_FLOATFORMAT
:
5166 printfi_filtered (spaces
, "floatformat ");
5167 if (TYPE_FLOATFORMAT (type
) == NULL
5168 || TYPE_FLOATFORMAT (type
)->name
== NULL
)
5169 puts_filtered ("(null)");
5171 puts_filtered (TYPE_FLOATFORMAT (type
)->name
);
5172 puts_filtered ("\n");
5175 case TYPE_SPECIFIC_FUNC
:
5176 printfi_filtered (spaces
, "calling_convention %d\n",
5177 TYPE_CALLING_CONVENTION (type
));
5178 /* tail_call_list is not printed. */
5181 case TYPE_SPECIFIC_SELF_TYPE
:
5182 printfi_filtered (spaces
, "self_type ");
5183 gdb_print_host_address (TYPE_SELF_TYPE (type
), gdb_stdout
);
5184 puts_filtered ("\n");
5189 obstack_free (&dont_print_type_obstack
, NULL
);
5192 /* Trivial helpers for the libiberty hash table, for mapping one
5195 struct type_pair
: public allocate_on_obstack
5197 type_pair (struct type
*old_
, struct type
*newobj_
)
5198 : old (old_
), newobj (newobj_
)
5201 struct type
* const old
, * const newobj
;
5205 type_pair_hash (const void *item
)
5207 const struct type_pair
*pair
= (const struct type_pair
*) item
;
5209 return htab_hash_pointer (pair
->old
);
5213 type_pair_eq (const void *item_lhs
, const void *item_rhs
)
5215 const struct type_pair
*lhs
= (const struct type_pair
*) item_lhs
;
5216 const struct type_pair
*rhs
= (const struct type_pair
*) item_rhs
;
5218 return lhs
->old
== rhs
->old
;
5221 /* Allocate the hash table used by copy_type_recursive to walk
5222 types without duplicates. We use OBJFILE's obstack, because
5223 OBJFILE is about to be deleted. */
5226 create_copied_types_hash (struct objfile
*objfile
)
5228 return htab_create_alloc_ex (1, type_pair_hash
, type_pair_eq
,
5229 NULL
, &objfile
->objfile_obstack
,
5230 hashtab_obstack_allocate
,
5231 dummy_obstack_deallocate
);
5234 /* Recursively copy (deep copy) a dynamic attribute list of a type. */
5236 static struct dynamic_prop_list
*
5237 copy_dynamic_prop_list (struct obstack
*objfile_obstack
,
5238 struct dynamic_prop_list
*list
)
5240 struct dynamic_prop_list
*copy
= list
;
5241 struct dynamic_prop_list
**node_ptr
= ©
;
5243 while (*node_ptr
!= NULL
)
5245 struct dynamic_prop_list
*node_copy
;
5247 node_copy
= ((struct dynamic_prop_list
*)
5248 obstack_copy (objfile_obstack
, *node_ptr
,
5249 sizeof (struct dynamic_prop_list
)));
5250 node_copy
->prop
= (*node_ptr
)->prop
;
5251 *node_ptr
= node_copy
;
5253 node_ptr
= &node_copy
->next
;
5259 /* Recursively copy (deep copy) TYPE, if it is associated with
5260 OBJFILE. Return a new type owned by the gdbarch associated with the type, a
5261 saved type if we have already visited TYPE (using COPIED_TYPES), or TYPE if
5262 it is not associated with OBJFILE. */
5265 copy_type_recursive (struct objfile
*objfile
,
5267 htab_t copied_types
)
5270 struct type
*new_type
;
5272 if (! TYPE_OBJFILE_OWNED (type
))
5275 /* This type shouldn't be pointing to any types in other objfiles;
5276 if it did, the type might disappear unexpectedly. */
5277 gdb_assert (TYPE_OBJFILE (type
) == objfile
);
5279 struct type_pair
pair (type
, nullptr);
5281 slot
= htab_find_slot (copied_types
, &pair
, INSERT
);
5283 return ((struct type_pair
*) *slot
)->newobj
;
5285 new_type
= alloc_type_arch (get_type_arch (type
));
5287 /* We must add the new type to the hash table immediately, in case
5288 we encounter this type again during a recursive call below. */
5289 struct type_pair
*stored
5290 = new (&objfile
->objfile_obstack
) struct type_pair (type
, new_type
);
5294 /* Copy the common fields of types. For the main type, we simply
5295 copy the entire thing and then update specific fields as needed. */
5296 *TYPE_MAIN_TYPE (new_type
) = *TYPE_MAIN_TYPE (type
);
5297 TYPE_OBJFILE_OWNED (new_type
) = 0;
5298 TYPE_OWNER (new_type
).gdbarch
= get_type_arch (type
);
5301 new_type
->set_name (xstrdup (type
->name ()));
5303 TYPE_INSTANCE_FLAGS (new_type
) = TYPE_INSTANCE_FLAGS (type
);
5304 TYPE_LENGTH (new_type
) = TYPE_LENGTH (type
);
5306 /* Copy the fields. */
5307 if (type
->num_fields ())
5311 nfields
= type
->num_fields ();
5312 new_type
->set_fields
5314 TYPE_ZALLOC (new_type
, nfields
* sizeof (struct field
)));
5316 for (i
= 0; i
< nfields
; i
++)
5318 TYPE_FIELD_ARTIFICIAL (new_type
, i
) =
5319 TYPE_FIELD_ARTIFICIAL (type
, i
);
5320 TYPE_FIELD_BITSIZE (new_type
, i
) = TYPE_FIELD_BITSIZE (type
, i
);
5321 if (type
->field (i
).type ())
5322 new_type
->field (i
).set_type
5323 (copy_type_recursive (objfile
, type
->field (i
).type (),
5325 if (TYPE_FIELD_NAME (type
, i
))
5326 TYPE_FIELD_NAME (new_type
, i
) =
5327 xstrdup (TYPE_FIELD_NAME (type
, i
));
5328 switch (TYPE_FIELD_LOC_KIND (type
, i
))
5330 case FIELD_LOC_KIND_BITPOS
:
5331 SET_FIELD_BITPOS (new_type
->field (i
),
5332 TYPE_FIELD_BITPOS (type
, i
));
5334 case FIELD_LOC_KIND_ENUMVAL
:
5335 SET_FIELD_ENUMVAL (new_type
->field (i
),
5336 TYPE_FIELD_ENUMVAL (type
, i
));
5338 case FIELD_LOC_KIND_PHYSADDR
:
5339 SET_FIELD_PHYSADDR (new_type
->field (i
),
5340 TYPE_FIELD_STATIC_PHYSADDR (type
, i
));
5342 case FIELD_LOC_KIND_PHYSNAME
:
5343 SET_FIELD_PHYSNAME (new_type
->field (i
),
5344 xstrdup (TYPE_FIELD_STATIC_PHYSNAME (type
,
5348 internal_error (__FILE__
, __LINE__
,
5349 _("Unexpected type field location kind: %d"),
5350 TYPE_FIELD_LOC_KIND (type
, i
));
5355 /* For range types, copy the bounds information. */
5356 if (type
->code () == TYPE_CODE_RANGE
)
5358 range_bounds
*bounds
5359 = ((struct range_bounds
*) TYPE_ALLOC
5360 (new_type
, sizeof (struct range_bounds
)));
5362 *bounds
= *type
->bounds ();
5363 new_type
->set_bounds (bounds
);
5366 if (type
->main_type
->dyn_prop_list
!= NULL
)
5367 new_type
->main_type
->dyn_prop_list
5368 = copy_dynamic_prop_list (&objfile
->objfile_obstack
,
5369 type
->main_type
->dyn_prop_list
);
5372 /* Copy pointers to other types. */
5373 if (TYPE_TARGET_TYPE (type
))
5374 TYPE_TARGET_TYPE (new_type
) =
5375 copy_type_recursive (objfile
,
5376 TYPE_TARGET_TYPE (type
),
5379 /* Maybe copy the type_specific bits.
5381 NOTE drow/2005-12-09: We do not copy the C++-specific bits like
5382 base classes and methods. There's no fundamental reason why we
5383 can't, but at the moment it is not needed. */
5385 switch (TYPE_SPECIFIC_FIELD (type
))
5387 case TYPE_SPECIFIC_NONE
:
5389 case TYPE_SPECIFIC_FUNC
:
5390 INIT_FUNC_SPECIFIC (new_type
);
5391 TYPE_CALLING_CONVENTION (new_type
) = TYPE_CALLING_CONVENTION (type
);
5392 TYPE_NO_RETURN (new_type
) = TYPE_NO_RETURN (type
);
5393 TYPE_TAIL_CALL_LIST (new_type
) = NULL
;
5395 case TYPE_SPECIFIC_FLOATFORMAT
:
5396 TYPE_FLOATFORMAT (new_type
) = TYPE_FLOATFORMAT (type
);
5398 case TYPE_SPECIFIC_CPLUS_STUFF
:
5399 INIT_CPLUS_SPECIFIC (new_type
);
5401 case TYPE_SPECIFIC_GNAT_STUFF
:
5402 INIT_GNAT_SPECIFIC (new_type
);
5404 case TYPE_SPECIFIC_SELF_TYPE
:
5405 set_type_self_type (new_type
,
5406 copy_type_recursive (objfile
, TYPE_SELF_TYPE (type
),
5410 gdb_assert_not_reached ("bad type_specific_kind");
5416 /* Make a copy of the given TYPE, except that the pointer & reference
5417 types are not preserved.
5419 This function assumes that the given type has an associated objfile.
5420 This objfile is used to allocate the new type. */
5423 copy_type (const struct type
*type
)
5425 struct type
*new_type
;
5427 gdb_assert (TYPE_OBJFILE_OWNED (type
));
5429 new_type
= alloc_type_copy (type
);
5430 TYPE_INSTANCE_FLAGS (new_type
) = TYPE_INSTANCE_FLAGS (type
);
5431 TYPE_LENGTH (new_type
) = TYPE_LENGTH (type
);
5432 memcpy (TYPE_MAIN_TYPE (new_type
), TYPE_MAIN_TYPE (type
),
5433 sizeof (struct main_type
));
5434 if (type
->main_type
->dyn_prop_list
!= NULL
)
5435 new_type
->main_type
->dyn_prop_list
5436 = copy_dynamic_prop_list (&TYPE_OBJFILE (type
) -> objfile_obstack
,
5437 type
->main_type
->dyn_prop_list
);
5442 /* Helper functions to initialize architecture-specific types. */
5444 /* Allocate a type structure associated with GDBARCH and set its
5445 CODE, LENGTH, and NAME fields. */
5448 arch_type (struct gdbarch
*gdbarch
,
5449 enum type_code code
, int bit
, const char *name
)
5453 type
= alloc_type_arch (gdbarch
);
5454 set_type_code (type
, code
);
5455 gdb_assert ((bit
% TARGET_CHAR_BIT
) == 0);
5456 TYPE_LENGTH (type
) = bit
/ TARGET_CHAR_BIT
;
5459 type
->set_name (gdbarch_obstack_strdup (gdbarch
, name
));
5464 /* Allocate a TYPE_CODE_INT type structure associated with GDBARCH.
5465 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
5466 the type's TYPE_UNSIGNED flag. NAME is the type name. */
5469 arch_integer_type (struct gdbarch
*gdbarch
,
5470 int bit
, int unsigned_p
, const char *name
)
5474 t
= arch_type (gdbarch
, TYPE_CODE_INT
, bit
, name
);
5476 TYPE_UNSIGNED (t
) = 1;
5481 /* Allocate a TYPE_CODE_CHAR type structure associated with GDBARCH.
5482 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
5483 the type's TYPE_UNSIGNED flag. NAME is the type name. */
5486 arch_character_type (struct gdbarch
*gdbarch
,
5487 int bit
, int unsigned_p
, const char *name
)
5491 t
= arch_type (gdbarch
, TYPE_CODE_CHAR
, bit
, name
);
5493 TYPE_UNSIGNED (t
) = 1;
5498 /* Allocate a TYPE_CODE_BOOL type structure associated with GDBARCH.
5499 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
5500 the type's TYPE_UNSIGNED flag. NAME is the type name. */
5503 arch_boolean_type (struct gdbarch
*gdbarch
,
5504 int bit
, int unsigned_p
, const char *name
)
5508 t
= arch_type (gdbarch
, TYPE_CODE_BOOL
, bit
, name
);
5510 TYPE_UNSIGNED (t
) = 1;
5515 /* Allocate a TYPE_CODE_FLT type structure associated with GDBARCH.
5516 BIT is the type size in bits; if BIT equals -1, the size is
5517 determined by the floatformat. NAME is the type name. Set the
5518 TYPE_FLOATFORMAT from FLOATFORMATS. */
5521 arch_float_type (struct gdbarch
*gdbarch
,
5522 int bit
, const char *name
,
5523 const struct floatformat
**floatformats
)
5525 const struct floatformat
*fmt
= floatformats
[gdbarch_byte_order (gdbarch
)];
5528 bit
= verify_floatformat (bit
, fmt
);
5529 t
= arch_type (gdbarch
, TYPE_CODE_FLT
, bit
, name
);
5530 TYPE_FLOATFORMAT (t
) = fmt
;
5535 /* Allocate a TYPE_CODE_DECFLOAT type structure associated with GDBARCH.
5536 BIT is the type size in bits. NAME is the type name. */
5539 arch_decfloat_type (struct gdbarch
*gdbarch
, int bit
, const char *name
)
5543 t
= arch_type (gdbarch
, TYPE_CODE_DECFLOAT
, bit
, name
);
5547 /* Allocate a TYPE_CODE_PTR type structure associated with GDBARCH.
5548 BIT is the pointer type size in bits. NAME is the type name.
5549 TARGET_TYPE is the pointer target type. Always sets the pointer type's
5550 TYPE_UNSIGNED flag. */
5553 arch_pointer_type (struct gdbarch
*gdbarch
,
5554 int bit
, const char *name
, struct type
*target_type
)
5558 t
= arch_type (gdbarch
, TYPE_CODE_PTR
, bit
, name
);
5559 TYPE_TARGET_TYPE (t
) = target_type
;
5560 TYPE_UNSIGNED (t
) = 1;
5564 /* Allocate a TYPE_CODE_FLAGS type structure associated with GDBARCH.
5565 NAME is the type name. BIT is the size of the flag word in bits. */
5568 arch_flags_type (struct gdbarch
*gdbarch
, const char *name
, int bit
)
5572 type
= arch_type (gdbarch
, TYPE_CODE_FLAGS
, bit
, name
);
5573 TYPE_UNSIGNED (type
) = 1;
5574 type
->set_num_fields (0);
5575 /* Pre-allocate enough space assuming every field is one bit. */
5577 ((struct field
*) TYPE_ZALLOC (type
, bit
* sizeof (struct field
)));
5582 /* Add field to TYPE_CODE_FLAGS type TYPE to indicate the bit at
5583 position BITPOS is called NAME. Pass NAME as "" for fields that
5584 should not be printed. */
5587 append_flags_type_field (struct type
*type
, int start_bitpos
, int nr_bits
,
5588 struct type
*field_type
, const char *name
)
5590 int type_bitsize
= TYPE_LENGTH (type
) * TARGET_CHAR_BIT
;
5591 int field_nr
= type
->num_fields ();
5593 gdb_assert (type
->code () == TYPE_CODE_FLAGS
);
5594 gdb_assert (type
->num_fields () + 1 <= type_bitsize
);
5595 gdb_assert (start_bitpos
>= 0 && start_bitpos
< type_bitsize
);
5596 gdb_assert (nr_bits
>= 1 && nr_bits
<= type_bitsize
);
5597 gdb_assert (name
!= NULL
);
5599 TYPE_FIELD_NAME (type
, field_nr
) = xstrdup (name
);
5600 type
->field (field_nr
).set_type (field_type
);
5601 SET_FIELD_BITPOS (type
->field (field_nr
), start_bitpos
);
5602 TYPE_FIELD_BITSIZE (type
, field_nr
) = nr_bits
;
5603 type
->set_num_fields (type
->num_fields () + 1);
5606 /* Special version of append_flags_type_field to add a flag field.
5607 Add field to TYPE_CODE_FLAGS type TYPE to indicate the bit at
5608 position BITPOS is called NAME. */
5611 append_flags_type_flag (struct type
*type
, int bitpos
, const char *name
)
5613 struct gdbarch
*gdbarch
= get_type_arch (type
);
5615 append_flags_type_field (type
, bitpos
, 1,
5616 builtin_type (gdbarch
)->builtin_bool
,
5620 /* Allocate a TYPE_CODE_STRUCT or TYPE_CODE_UNION type structure (as
5621 specified by CODE) associated with GDBARCH. NAME is the type name. */
5624 arch_composite_type (struct gdbarch
*gdbarch
, const char *name
,
5625 enum type_code code
)
5629 gdb_assert (code
== TYPE_CODE_STRUCT
|| code
== TYPE_CODE_UNION
);
5630 t
= arch_type (gdbarch
, code
, 0, NULL
);
5632 INIT_CPLUS_SPECIFIC (t
);
5636 /* Add new field with name NAME and type FIELD to composite type T.
5637 Do not set the field's position or adjust the type's length;
5638 the caller should do so. Return the new field. */
5641 append_composite_type_field_raw (struct type
*t
, const char *name
,
5646 t
->set_num_fields (t
->num_fields () + 1);
5647 t
->set_fields (XRESIZEVEC (struct field
, t
->fields (),
5649 f
= &t
->field (t
->num_fields () - 1);
5650 memset (f
, 0, sizeof f
[0]);
5651 f
[0].set_type (field
);
5652 FIELD_NAME (f
[0]) = name
;
5656 /* Add new field with name NAME and type FIELD to composite type T.
5657 ALIGNMENT (if non-zero) specifies the minimum field alignment. */
5660 append_composite_type_field_aligned (struct type
*t
, const char *name
,
5661 struct type
*field
, int alignment
)
5663 struct field
*f
= append_composite_type_field_raw (t
, name
, field
);
5665 if (t
->code () == TYPE_CODE_UNION
)
5667 if (TYPE_LENGTH (t
) < TYPE_LENGTH (field
))
5668 TYPE_LENGTH (t
) = TYPE_LENGTH (field
);
5670 else if (t
->code () == TYPE_CODE_STRUCT
)
5672 TYPE_LENGTH (t
) = TYPE_LENGTH (t
) + TYPE_LENGTH (field
);
5673 if (t
->num_fields () > 1)
5675 SET_FIELD_BITPOS (f
[0],
5676 (FIELD_BITPOS (f
[-1])
5677 + (TYPE_LENGTH (f
[-1].type ())
5678 * TARGET_CHAR_BIT
)));
5684 alignment
*= TARGET_CHAR_BIT
;
5685 left
= FIELD_BITPOS (f
[0]) % alignment
;
5689 SET_FIELD_BITPOS (f
[0], FIELD_BITPOS (f
[0]) + (alignment
- left
));
5690 TYPE_LENGTH (t
) += (alignment
- left
) / TARGET_CHAR_BIT
;
5697 /* Add new field with name NAME and type FIELD to composite type T. */
5700 append_composite_type_field (struct type
*t
, const char *name
,
5703 append_composite_type_field_aligned (t
, name
, field
, 0);
5706 static struct gdbarch_data
*gdbtypes_data
;
5708 const struct builtin_type
*
5709 builtin_type (struct gdbarch
*gdbarch
)
5711 return (const struct builtin_type
*) gdbarch_data (gdbarch
, gdbtypes_data
);
5715 gdbtypes_post_init (struct gdbarch
*gdbarch
)
5717 struct builtin_type
*builtin_type
5718 = GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct builtin_type
);
5721 builtin_type
->builtin_void
5722 = arch_type (gdbarch
, TYPE_CODE_VOID
, TARGET_CHAR_BIT
, "void");
5723 builtin_type
->builtin_char
5724 = arch_integer_type (gdbarch
, TARGET_CHAR_BIT
,
5725 !gdbarch_char_signed (gdbarch
), "char");
5726 TYPE_NOSIGN (builtin_type
->builtin_char
) = 1;
5727 builtin_type
->builtin_signed_char
5728 = arch_integer_type (gdbarch
, TARGET_CHAR_BIT
,
5730 builtin_type
->builtin_unsigned_char
5731 = arch_integer_type (gdbarch
, TARGET_CHAR_BIT
,
5732 1, "unsigned char");
5733 builtin_type
->builtin_short
5734 = arch_integer_type (gdbarch
, gdbarch_short_bit (gdbarch
),
5736 builtin_type
->builtin_unsigned_short
5737 = arch_integer_type (gdbarch
, gdbarch_short_bit (gdbarch
),
5738 1, "unsigned short");
5739 builtin_type
->builtin_int
5740 = arch_integer_type (gdbarch
, gdbarch_int_bit (gdbarch
),
5742 builtin_type
->builtin_unsigned_int
5743 = arch_integer_type (gdbarch
, gdbarch_int_bit (gdbarch
),
5745 builtin_type
->builtin_long
5746 = arch_integer_type (gdbarch
, gdbarch_long_bit (gdbarch
),
5748 builtin_type
->builtin_unsigned_long
5749 = arch_integer_type (gdbarch
, gdbarch_long_bit (gdbarch
),
5750 1, "unsigned long");
5751 builtin_type
->builtin_long_long
5752 = arch_integer_type (gdbarch
, gdbarch_long_long_bit (gdbarch
),
5754 builtin_type
->builtin_unsigned_long_long
5755 = arch_integer_type (gdbarch
, gdbarch_long_long_bit (gdbarch
),
5756 1, "unsigned long long");
5757 builtin_type
->builtin_half
5758 = arch_float_type (gdbarch
, gdbarch_half_bit (gdbarch
),
5759 "half", gdbarch_half_format (gdbarch
));
5760 builtin_type
->builtin_float
5761 = arch_float_type (gdbarch
, gdbarch_float_bit (gdbarch
),
5762 "float", gdbarch_float_format (gdbarch
));
5763 builtin_type
->builtin_double
5764 = arch_float_type (gdbarch
, gdbarch_double_bit (gdbarch
),
5765 "double", gdbarch_double_format (gdbarch
));
5766 builtin_type
->builtin_long_double
5767 = arch_float_type (gdbarch
, gdbarch_long_double_bit (gdbarch
),
5768 "long double", gdbarch_long_double_format (gdbarch
));
5769 builtin_type
->builtin_complex
5770 = init_complex_type ("complex", builtin_type
->builtin_float
);
5771 builtin_type
->builtin_double_complex
5772 = init_complex_type ("double complex", builtin_type
->builtin_double
);
5773 builtin_type
->builtin_string
5774 = arch_type (gdbarch
, TYPE_CODE_STRING
, TARGET_CHAR_BIT
, "string");
5775 builtin_type
->builtin_bool
5776 = arch_type (gdbarch
, TYPE_CODE_BOOL
, TARGET_CHAR_BIT
, "bool");
5778 /* The following three are about decimal floating point types, which
5779 are 32-bits, 64-bits and 128-bits respectively. */
5780 builtin_type
->builtin_decfloat
5781 = arch_decfloat_type (gdbarch
, 32, "_Decimal32");
5782 builtin_type
->builtin_decdouble
5783 = arch_decfloat_type (gdbarch
, 64, "_Decimal64");
5784 builtin_type
->builtin_declong
5785 = arch_decfloat_type (gdbarch
, 128, "_Decimal128");
5787 /* "True" character types. */
5788 builtin_type
->builtin_true_char
5789 = arch_character_type (gdbarch
, TARGET_CHAR_BIT
, 0, "true character");
5790 builtin_type
->builtin_true_unsigned_char
5791 = arch_character_type (gdbarch
, TARGET_CHAR_BIT
, 1, "true character");
5793 /* Fixed-size integer types. */
5794 builtin_type
->builtin_int0
5795 = arch_integer_type (gdbarch
, 0, 0, "int0_t");
5796 builtin_type
->builtin_int8
5797 = arch_integer_type (gdbarch
, 8, 0, "int8_t");
5798 builtin_type
->builtin_uint8
5799 = arch_integer_type (gdbarch
, 8, 1, "uint8_t");
5800 builtin_type
->builtin_int16
5801 = arch_integer_type (gdbarch
, 16, 0, "int16_t");
5802 builtin_type
->builtin_uint16
5803 = arch_integer_type (gdbarch
, 16, 1, "uint16_t");
5804 builtin_type
->builtin_int24
5805 = arch_integer_type (gdbarch
, 24, 0, "int24_t");
5806 builtin_type
->builtin_uint24
5807 = arch_integer_type (gdbarch
, 24, 1, "uint24_t");
5808 builtin_type
->builtin_int32
5809 = arch_integer_type (gdbarch
, 32, 0, "int32_t");
5810 builtin_type
->builtin_uint32
5811 = arch_integer_type (gdbarch
, 32, 1, "uint32_t");
5812 builtin_type
->builtin_int64
5813 = arch_integer_type (gdbarch
, 64, 0, "int64_t");
5814 builtin_type
->builtin_uint64
5815 = arch_integer_type (gdbarch
, 64, 1, "uint64_t");
5816 builtin_type
->builtin_int128
5817 = arch_integer_type (gdbarch
, 128, 0, "int128_t");
5818 builtin_type
->builtin_uint128
5819 = arch_integer_type (gdbarch
, 128, 1, "uint128_t");
5820 TYPE_INSTANCE_FLAGS (builtin_type
->builtin_int8
) |=
5821 TYPE_INSTANCE_FLAG_NOTTEXT
;
5822 TYPE_INSTANCE_FLAGS (builtin_type
->builtin_uint8
) |=
5823 TYPE_INSTANCE_FLAG_NOTTEXT
;
5825 /* Wide character types. */
5826 builtin_type
->builtin_char16
5827 = arch_integer_type (gdbarch
, 16, 1, "char16_t");
5828 builtin_type
->builtin_char32
5829 = arch_integer_type (gdbarch
, 32, 1, "char32_t");
5830 builtin_type
->builtin_wchar
5831 = arch_integer_type (gdbarch
, gdbarch_wchar_bit (gdbarch
),
5832 !gdbarch_wchar_signed (gdbarch
), "wchar_t");
5834 /* Default data/code pointer types. */
5835 builtin_type
->builtin_data_ptr
5836 = lookup_pointer_type (builtin_type
->builtin_void
);
5837 builtin_type
->builtin_func_ptr
5838 = lookup_pointer_type (lookup_function_type (builtin_type
->builtin_void
));
5839 builtin_type
->builtin_func_func
5840 = lookup_function_type (builtin_type
->builtin_func_ptr
);
5842 /* This type represents a GDB internal function. */
5843 builtin_type
->internal_fn
5844 = arch_type (gdbarch
, TYPE_CODE_INTERNAL_FUNCTION
, 0,
5845 "<internal function>");
5847 /* This type represents an xmethod. */
5848 builtin_type
->xmethod
5849 = arch_type (gdbarch
, TYPE_CODE_XMETHOD
, 0, "<xmethod>");
5851 return builtin_type
;
5854 /* This set of objfile-based types is intended to be used by symbol
5855 readers as basic types. */
5857 static const struct objfile_key
<struct objfile_type
,
5858 gdb::noop_deleter
<struct objfile_type
>>
5861 const struct objfile_type
*
5862 objfile_type (struct objfile
*objfile
)
5864 struct gdbarch
*gdbarch
;
5865 struct objfile_type
*objfile_type
= objfile_type_data
.get (objfile
);
5868 return objfile_type
;
5870 objfile_type
= OBSTACK_CALLOC (&objfile
->objfile_obstack
,
5871 1, struct objfile_type
);
5873 /* Use the objfile architecture to determine basic type properties. */
5874 gdbarch
= objfile
->arch ();
5877 objfile_type
->builtin_void
5878 = init_type (objfile
, TYPE_CODE_VOID
, TARGET_CHAR_BIT
, "void");
5879 objfile_type
->builtin_char
5880 = init_integer_type (objfile
, TARGET_CHAR_BIT
,
5881 !gdbarch_char_signed (gdbarch
), "char");
5882 TYPE_NOSIGN (objfile_type
->builtin_char
) = 1;
5883 objfile_type
->builtin_signed_char
5884 = init_integer_type (objfile
, TARGET_CHAR_BIT
,
5886 objfile_type
->builtin_unsigned_char
5887 = init_integer_type (objfile
, TARGET_CHAR_BIT
,
5888 1, "unsigned char");
5889 objfile_type
->builtin_short
5890 = init_integer_type (objfile
, gdbarch_short_bit (gdbarch
),
5892 objfile_type
->builtin_unsigned_short
5893 = init_integer_type (objfile
, gdbarch_short_bit (gdbarch
),
5894 1, "unsigned short");
5895 objfile_type
->builtin_int
5896 = init_integer_type (objfile
, gdbarch_int_bit (gdbarch
),
5898 objfile_type
->builtin_unsigned_int
5899 = init_integer_type (objfile
, gdbarch_int_bit (gdbarch
),
5901 objfile_type
->builtin_long
5902 = init_integer_type (objfile
, gdbarch_long_bit (gdbarch
),
5904 objfile_type
->builtin_unsigned_long
5905 = init_integer_type (objfile
, gdbarch_long_bit (gdbarch
),
5906 1, "unsigned long");
5907 objfile_type
->builtin_long_long
5908 = init_integer_type (objfile
, gdbarch_long_long_bit (gdbarch
),
5910 objfile_type
->builtin_unsigned_long_long
5911 = init_integer_type (objfile
, gdbarch_long_long_bit (gdbarch
),
5912 1, "unsigned long long");
5913 objfile_type
->builtin_float
5914 = init_float_type (objfile
, gdbarch_float_bit (gdbarch
),
5915 "float", gdbarch_float_format (gdbarch
));
5916 objfile_type
->builtin_double
5917 = init_float_type (objfile
, gdbarch_double_bit (gdbarch
),
5918 "double", gdbarch_double_format (gdbarch
));
5919 objfile_type
->builtin_long_double
5920 = init_float_type (objfile
, gdbarch_long_double_bit (gdbarch
),
5921 "long double", gdbarch_long_double_format (gdbarch
));
5923 /* This type represents a type that was unrecognized in symbol read-in. */
5924 objfile_type
->builtin_error
5925 = init_type (objfile
, TYPE_CODE_ERROR
, 0, "<unknown type>");
5927 /* The following set of types is used for symbols with no
5928 debug information. */
5929 objfile_type
->nodebug_text_symbol
5930 = init_type (objfile
, TYPE_CODE_FUNC
, TARGET_CHAR_BIT
,
5931 "<text variable, no debug info>");
5932 objfile_type
->nodebug_text_gnu_ifunc_symbol
5933 = init_type (objfile
, TYPE_CODE_FUNC
, TARGET_CHAR_BIT
,
5934 "<text gnu-indirect-function variable, no debug info>");
5935 TYPE_GNU_IFUNC (objfile_type
->nodebug_text_gnu_ifunc_symbol
) = 1;
5936 objfile_type
->nodebug_got_plt_symbol
5937 = init_pointer_type (objfile
, gdbarch_addr_bit (gdbarch
),
5938 "<text from jump slot in .got.plt, no debug info>",
5939 objfile_type
->nodebug_text_symbol
);
5940 objfile_type
->nodebug_data_symbol
5941 = init_nodebug_var_type (objfile
, "<data variable, no debug info>");
5942 objfile_type
->nodebug_unknown_symbol
5943 = init_nodebug_var_type (objfile
, "<variable (not text or data), no debug info>");
5944 objfile_type
->nodebug_tls_symbol
5945 = init_nodebug_var_type (objfile
, "<thread local variable, no debug info>");
5947 /* NOTE: on some targets, addresses and pointers are not necessarily
5951 - gdb's `struct type' always describes the target's
5953 - gdb's `struct value' objects should always hold values in
5955 - gdb's CORE_ADDR values are addresses in the unified virtual
5956 address space that the assembler and linker work with. Thus,
5957 since target_read_memory takes a CORE_ADDR as an argument, it
5958 can access any memory on the target, even if the processor has
5959 separate code and data address spaces.
5961 In this context, objfile_type->builtin_core_addr is a bit odd:
5962 it's a target type for a value the target will never see. It's
5963 only used to hold the values of (typeless) linker symbols, which
5964 are indeed in the unified virtual address space. */
5966 objfile_type
->builtin_core_addr
5967 = init_integer_type (objfile
, gdbarch_addr_bit (gdbarch
), 1,
5970 objfile_type_data
.set (objfile
, objfile_type
);
5971 return objfile_type
;
5974 void _initialize_gdbtypes ();
5976 _initialize_gdbtypes ()
5978 gdbtypes_data
= gdbarch_data_register_post_init (gdbtypes_post_init
);
5980 add_setshow_zuinteger_cmd ("overload", no_class
, &overload_debug
,
5981 _("Set debugging of C++ overloading."),
5982 _("Show debugging of C++ overloading."),
5983 _("When enabled, ranking of the "
5984 "functions is displayed."),
5986 show_overload_debug
,
5987 &setdebuglist
, &showdebuglist
);
5989 /* Add user knob for controlling resolution of opaque types. */
5990 add_setshow_boolean_cmd ("opaque-type-resolution", class_support
,
5991 &opaque_type_resolution
,
5992 _("Set resolution of opaque struct/class/union"
5993 " types (if set before loading symbols)."),
5994 _("Show resolution of opaque struct/class/union"
5995 " types (if set before loading symbols)."),
5997 show_opaque_type_resolution
,
5998 &setlist
, &showlist
);
6000 /* Add an option to permit non-strict type checking. */
6001 add_setshow_boolean_cmd ("type", class_support
,
6002 &strict_type_checking
,
6003 _("Set strict type checking."),
6004 _("Show strict type checking."),
6006 show_strict_type_checking
,
6007 &setchecklist
, &showchecklist
);