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
.data
.const_val
== r
.data
.const_val
;
886 case PROP_ADDR_OFFSET
:
889 return l
.data
.baton
== r
.data
.baton
;
890 case PROP_VARIANT_PARTS
:
891 return l
.data
.variant_parts
== r
.data
.variant_parts
;
893 return l
.data
.original_type
== r
.data
.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
;
944 /* Initialize the stride to be a constant, the value will already be zero
945 thanks to the use of TYPE_ZALLOC above. */
946 bounds
->stride
.kind
= PROP_CONST
;
948 result_type
->set_bounds (bounds
);
950 if (low_bound
->kind
== PROP_CONST
&& low_bound
->data
.const_val
>= 0)
951 TYPE_UNSIGNED (result_type
) = 1;
953 /* Ada allows the declaration of range types whose upper bound is
954 less than the lower bound, so checking the lower bound is not
955 enough. Make sure we do not mark a range type whose upper bound
956 is negative as unsigned. */
957 if (high_bound
->kind
== PROP_CONST
&& high_bound
->data
.const_val
< 0)
958 TYPE_UNSIGNED (result_type
) = 0;
960 TYPE_ENDIANITY_NOT_DEFAULT (result_type
)
961 = TYPE_ENDIANITY_NOT_DEFAULT (index_type
);
966 /* See gdbtypes.h. */
969 create_range_type_with_stride (struct type
*result_type
,
970 struct type
*index_type
,
971 const struct dynamic_prop
*low_bound
,
972 const struct dynamic_prop
*high_bound
,
974 const struct dynamic_prop
*stride
,
977 result_type
= create_range_type (result_type
, index_type
, low_bound
,
980 gdb_assert (stride
!= nullptr);
981 result_type
->bounds ()->stride
= *stride
;
982 result_type
->bounds ()->flag_is_byte_stride
= byte_stride_p
;
989 /* Create a range type using either a blank type supplied in
990 RESULT_TYPE, or creating a new type, inheriting the objfile from
993 Indices will be of type INDEX_TYPE, and will range from LOW_BOUND
994 to HIGH_BOUND, inclusive.
996 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
997 sure it is TYPE_CODE_UNDEF before we bash it into a range type? */
1000 create_static_range_type (struct type
*result_type
, struct type
*index_type
,
1001 LONGEST low_bound
, LONGEST high_bound
)
1003 struct dynamic_prop low
, high
;
1005 low
.kind
= PROP_CONST
;
1006 low
.data
.const_val
= low_bound
;
1008 high
.kind
= PROP_CONST
;
1009 high
.data
.const_val
= high_bound
;
1011 result_type
= create_range_type (result_type
, index_type
, &low
, &high
, 0);
1016 /* Predicate tests whether BOUNDS are static. Returns 1 if all bounds values
1017 are static, otherwise returns 0. */
1020 has_static_range (const struct range_bounds
*bounds
)
1022 /* If the range doesn't have a defined stride then its stride field will
1023 be initialized to the constant 0. */
1024 return (bounds
->low
.kind
== PROP_CONST
1025 && bounds
->high
.kind
== PROP_CONST
1026 && bounds
->stride
.kind
== PROP_CONST
);
1030 /* Set *LOWP and *HIGHP to the lower and upper bounds of discrete type
1033 Return 1 if type is a range type with two defined, constant bounds.
1034 Else, return 0 if it is discrete (and bounds will fit in LONGEST).
1038 get_discrete_bounds (struct type
*type
, LONGEST
*lowp
, LONGEST
*highp
)
1040 type
= check_typedef (type
);
1041 switch (type
->code ())
1043 case TYPE_CODE_RANGE
:
1044 /* This function currently only works for ranges with two defined,
1046 if (type
->bounds ()->low
.kind () != PROP_CONST
1047 || type
->bounds ()->high
.kind () != PROP_CONST
)
1050 *lowp
= TYPE_LOW_BOUND (type
);
1051 *highp
= TYPE_HIGH_BOUND (type
);
1053 if (TYPE_TARGET_TYPE (type
)->code () == TYPE_CODE_ENUM
)
1055 if (!discrete_position (TYPE_TARGET_TYPE (type
), *lowp
, lowp
)
1056 || ! discrete_position (TYPE_TARGET_TYPE (type
), *highp
, highp
))
1060 case TYPE_CODE_ENUM
:
1061 if (type
->num_fields () > 0)
1063 /* The enums may not be sorted by value, so search all
1067 *lowp
= *highp
= TYPE_FIELD_ENUMVAL (type
, 0);
1068 for (i
= 0; i
< type
->num_fields (); i
++)
1070 if (TYPE_FIELD_ENUMVAL (type
, i
) < *lowp
)
1071 *lowp
= TYPE_FIELD_ENUMVAL (type
, i
);
1072 if (TYPE_FIELD_ENUMVAL (type
, i
) > *highp
)
1073 *highp
= TYPE_FIELD_ENUMVAL (type
, i
);
1076 /* Set unsigned indicator if warranted. */
1079 TYPE_UNSIGNED (type
) = 1;
1088 case TYPE_CODE_BOOL
:
1093 if (TYPE_LENGTH (type
) > sizeof (LONGEST
)) /* Too big */
1095 if (!TYPE_UNSIGNED (type
))
1097 *lowp
= -(1 << (TYPE_LENGTH (type
) * TARGET_CHAR_BIT
- 1));
1098 *highp
= -*lowp
- 1;
1102 case TYPE_CODE_CHAR
:
1104 /* This round-about calculation is to avoid shifting by
1105 TYPE_LENGTH (type) * TARGET_CHAR_BIT, which will not work
1106 if TYPE_LENGTH (type) == sizeof (LONGEST). */
1107 *highp
= 1 << (TYPE_LENGTH (type
) * TARGET_CHAR_BIT
- 1);
1108 *highp
= (*highp
- 1) | *highp
;
1115 /* Assuming TYPE is a simple, non-empty array type, compute its upper
1116 and lower bound. Save the low bound into LOW_BOUND if not NULL.
1117 Save the high bound into HIGH_BOUND if not NULL.
1119 Return 1 if the operation was successful. Return zero otherwise,
1120 in which case the values of LOW_BOUND and HIGH_BOUNDS are unmodified. */
1123 get_array_bounds (struct type
*type
, LONGEST
*low_bound
, LONGEST
*high_bound
)
1125 struct type
*index
= type
->index_type ();
1133 res
= get_discrete_bounds (index
, &low
, &high
);
1146 /* Assuming that TYPE is a discrete type and VAL is a valid integer
1147 representation of a value of this type, save the corresponding
1148 position number in POS.
1150 Its differs from VAL only in the case of enumeration types. In
1151 this case, the position number of the value of the first listed
1152 enumeration literal is zero; the position number of the value of
1153 each subsequent enumeration literal is one more than that of its
1154 predecessor in the list.
1156 Return 1 if the operation was successful. Return zero otherwise,
1157 in which case the value of POS is unmodified.
1161 discrete_position (struct type
*type
, LONGEST val
, LONGEST
*pos
)
1163 if (type
->code () == TYPE_CODE_RANGE
)
1164 type
= TYPE_TARGET_TYPE (type
);
1166 if (type
->code () == TYPE_CODE_ENUM
)
1170 for (i
= 0; i
< type
->num_fields (); i
+= 1)
1172 if (val
== TYPE_FIELD_ENUMVAL (type
, i
))
1178 /* Invalid enumeration value. */
1188 /* If the array TYPE has static bounds calculate and update its
1189 size, then return true. Otherwise return false and leave TYPE
1193 update_static_array_size (struct type
*type
)
1195 gdb_assert (type
->code () == TYPE_CODE_ARRAY
);
1197 struct type
*range_type
= type
->index_type ();
1199 if (type
->dyn_prop (DYN_PROP_BYTE_STRIDE
) == nullptr
1200 && has_static_range (range_type
->bounds ())
1201 && (!type_not_associated (type
)
1202 && !type_not_allocated (type
)))
1204 LONGEST low_bound
, high_bound
;
1206 struct type
*element_type
;
1208 /* If the array itself doesn't provide a stride value then take
1209 whatever stride the range provides. Don't update BIT_STRIDE as
1210 we don't want to place the stride value from the range into this
1211 arrays bit size field. */
1212 stride
= TYPE_FIELD_BITSIZE (type
, 0);
1214 stride
= TYPE_BIT_STRIDE (range_type
);
1216 if (get_discrete_bounds (range_type
, &low_bound
, &high_bound
) < 0)
1217 low_bound
= high_bound
= 0;
1218 element_type
= check_typedef (TYPE_TARGET_TYPE (type
));
1219 /* Be careful when setting the array length. Ada arrays can be
1220 empty arrays with the high_bound being smaller than the low_bound.
1221 In such cases, the array length should be zero. */
1222 if (high_bound
< low_bound
)
1223 TYPE_LENGTH (type
) = 0;
1224 else if (stride
!= 0)
1226 /* Ensure that the type length is always positive, even in the
1227 case where (for example in Fortran) we have a negative
1228 stride. It is possible to have a single element array with a
1229 negative stride in Fortran (this doesn't mean anything
1230 special, it's still just a single element array) so do
1231 consider that case when touching this code. */
1232 LONGEST element_count
= std::abs (high_bound
- low_bound
+ 1);
1234 = ((std::abs (stride
) * element_count
) + 7) / 8;
1237 TYPE_LENGTH (type
) =
1238 TYPE_LENGTH (element_type
) * (high_bound
- low_bound
+ 1);
1246 /* Create an array type using either a blank type supplied in
1247 RESULT_TYPE, or creating a new type, inheriting the objfile from
1250 Elements will be of type ELEMENT_TYPE, the indices will be of type
1253 BYTE_STRIDE_PROP, when not NULL, provides the array's byte stride.
1254 This byte stride property is added to the resulting array type
1255 as a DYN_PROP_BYTE_STRIDE. As a consequence, the BYTE_STRIDE_PROP
1256 argument can only be used to create types that are objfile-owned
1257 (see add_dyn_prop), meaning that either this function must be called
1258 with an objfile-owned RESULT_TYPE, or an objfile-owned RANGE_TYPE.
1260 BIT_STRIDE is taken into account only when BYTE_STRIDE_PROP is NULL.
1261 If BIT_STRIDE is not zero, build a packed array type whose element
1262 size is BIT_STRIDE. Otherwise, ignore this parameter.
1264 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
1265 sure it is TYPE_CODE_UNDEF before we bash it into an array
1269 create_array_type_with_stride (struct type
*result_type
,
1270 struct type
*element_type
,
1271 struct type
*range_type
,
1272 struct dynamic_prop
*byte_stride_prop
,
1273 unsigned int bit_stride
)
1275 if (byte_stride_prop
!= NULL
1276 && byte_stride_prop
->kind
== PROP_CONST
)
1278 /* The byte stride is actually not dynamic. Pretend we were
1279 called with bit_stride set instead of byte_stride_prop.
1280 This will give us the same result type, while avoiding
1281 the need to handle this as a special case. */
1282 bit_stride
= byte_stride_prop
->data
.const_val
* 8;
1283 byte_stride_prop
= NULL
;
1286 if (result_type
== NULL
)
1287 result_type
= alloc_type_copy (range_type
);
1289 result_type
->set_code (TYPE_CODE_ARRAY
);
1290 TYPE_TARGET_TYPE (result_type
) = element_type
;
1292 result_type
->set_num_fields (1);
1293 result_type
->set_fields
1294 ((struct field
*) TYPE_ZALLOC (result_type
, sizeof (struct field
)));
1295 result_type
->set_index_type (range_type
);
1296 if (byte_stride_prop
!= NULL
)
1297 result_type
->add_dyn_prop (DYN_PROP_BYTE_STRIDE
, *byte_stride_prop
);
1298 else if (bit_stride
> 0)
1299 TYPE_FIELD_BITSIZE (result_type
, 0) = bit_stride
;
1301 if (!update_static_array_size (result_type
))
1303 /* This type is dynamic and its length needs to be computed
1304 on demand. In the meantime, avoid leaving the TYPE_LENGTH
1305 undefined by setting it to zero. Although we are not expected
1306 to trust TYPE_LENGTH in this case, setting the size to zero
1307 allows us to avoid allocating objects of random sizes in case
1308 we accidently do. */
1309 TYPE_LENGTH (result_type
) = 0;
1312 /* TYPE_TARGET_STUB will take care of zero length arrays. */
1313 if (TYPE_LENGTH (result_type
) == 0)
1314 TYPE_TARGET_STUB (result_type
) = 1;
1319 /* Same as create_array_type_with_stride but with no bit_stride
1320 (BIT_STRIDE = 0), thus building an unpacked array. */
1323 create_array_type (struct type
*result_type
,
1324 struct type
*element_type
,
1325 struct type
*range_type
)
1327 return create_array_type_with_stride (result_type
, element_type
,
1328 range_type
, NULL
, 0);
1332 lookup_array_range_type (struct type
*element_type
,
1333 LONGEST low_bound
, LONGEST high_bound
)
1335 struct type
*index_type
;
1336 struct type
*range_type
;
1338 if (TYPE_OBJFILE_OWNED (element_type
))
1339 index_type
= objfile_type (TYPE_OWNER (element_type
).objfile
)->builtin_int
;
1341 index_type
= builtin_type (get_type_arch (element_type
))->builtin_int
;
1342 range_type
= create_static_range_type (NULL
, index_type
,
1343 low_bound
, high_bound
);
1345 return create_array_type (NULL
, element_type
, range_type
);
1348 /* Create a string type using either a blank type supplied in
1349 RESULT_TYPE, or creating a new type. String types are similar
1350 enough to array of char types that we can use create_array_type to
1351 build the basic type and then bash it into a string type.
1353 For fixed length strings, the range type contains 0 as the lower
1354 bound and the length of the string minus one as the upper bound.
1356 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
1357 sure it is TYPE_CODE_UNDEF before we bash it into a string
1361 create_string_type (struct type
*result_type
,
1362 struct type
*string_char_type
,
1363 struct type
*range_type
)
1365 result_type
= create_array_type (result_type
,
1368 result_type
->set_code (TYPE_CODE_STRING
);
1373 lookup_string_range_type (struct type
*string_char_type
,
1374 LONGEST low_bound
, LONGEST high_bound
)
1376 struct type
*result_type
;
1378 result_type
= lookup_array_range_type (string_char_type
,
1379 low_bound
, high_bound
);
1380 result_type
->set_code (TYPE_CODE_STRING
);
1385 create_set_type (struct type
*result_type
, struct type
*domain_type
)
1387 if (result_type
== NULL
)
1388 result_type
= alloc_type_copy (domain_type
);
1390 result_type
->set_code (TYPE_CODE_SET
);
1391 result_type
->set_num_fields (1);
1392 result_type
->set_fields
1393 ((struct field
*) TYPE_ZALLOC (result_type
, sizeof (struct field
)));
1395 if (!TYPE_STUB (domain_type
))
1397 LONGEST low_bound
, high_bound
, bit_length
;
1399 if (get_discrete_bounds (domain_type
, &low_bound
, &high_bound
) < 0)
1400 low_bound
= high_bound
= 0;
1401 bit_length
= high_bound
- low_bound
+ 1;
1402 TYPE_LENGTH (result_type
)
1403 = (bit_length
+ TARGET_CHAR_BIT
- 1) / TARGET_CHAR_BIT
;
1405 TYPE_UNSIGNED (result_type
) = 1;
1407 result_type
->field (0).set_type (domain_type
);
1412 /* Convert ARRAY_TYPE to a vector type. This may modify ARRAY_TYPE
1413 and any array types nested inside it. */
1416 make_vector_type (struct type
*array_type
)
1418 struct type
*inner_array
, *elt_type
;
1421 /* Find the innermost array type, in case the array is
1422 multi-dimensional. */
1423 inner_array
= array_type
;
1424 while (TYPE_TARGET_TYPE (inner_array
)->code () == TYPE_CODE_ARRAY
)
1425 inner_array
= TYPE_TARGET_TYPE (inner_array
);
1427 elt_type
= TYPE_TARGET_TYPE (inner_array
);
1428 if (elt_type
->code () == TYPE_CODE_INT
)
1430 flags
= TYPE_INSTANCE_FLAGS (elt_type
) | TYPE_INSTANCE_FLAG_NOTTEXT
;
1431 elt_type
= make_qualified_type (elt_type
, flags
, NULL
);
1432 TYPE_TARGET_TYPE (inner_array
) = elt_type
;
1435 TYPE_VECTOR (array_type
) = 1;
1439 init_vector_type (struct type
*elt_type
, int n
)
1441 struct type
*array_type
;
1443 array_type
= lookup_array_range_type (elt_type
, 0, n
- 1);
1444 make_vector_type (array_type
);
1448 /* Internal routine called by TYPE_SELF_TYPE to return the type that TYPE
1449 belongs to. In c++ this is the class of "this", but TYPE_THIS_TYPE is too
1450 confusing. "self" is a common enough replacement for "this".
1451 TYPE must be one of TYPE_CODE_METHODPTR, TYPE_CODE_MEMBERPTR, or
1452 TYPE_CODE_METHOD. */
1455 internal_type_self_type (struct type
*type
)
1457 switch (type
->code ())
1459 case TYPE_CODE_METHODPTR
:
1460 case TYPE_CODE_MEMBERPTR
:
1461 if (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_NONE
)
1463 gdb_assert (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_SELF_TYPE
);
1464 return TYPE_MAIN_TYPE (type
)->type_specific
.self_type
;
1465 case TYPE_CODE_METHOD
:
1466 if (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_NONE
)
1468 gdb_assert (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_FUNC
);
1469 return TYPE_MAIN_TYPE (type
)->type_specific
.func_stuff
->self_type
;
1471 gdb_assert_not_reached ("bad type");
1475 /* Set the type of the class that TYPE belongs to.
1476 In c++ this is the class of "this".
1477 TYPE must be one of TYPE_CODE_METHODPTR, TYPE_CODE_MEMBERPTR, or
1478 TYPE_CODE_METHOD. */
1481 set_type_self_type (struct type
*type
, struct type
*self_type
)
1483 switch (type
->code ())
1485 case TYPE_CODE_METHODPTR
:
1486 case TYPE_CODE_MEMBERPTR
:
1487 if (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_NONE
)
1488 TYPE_SPECIFIC_FIELD (type
) = TYPE_SPECIFIC_SELF_TYPE
;
1489 gdb_assert (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_SELF_TYPE
);
1490 TYPE_MAIN_TYPE (type
)->type_specific
.self_type
= self_type
;
1492 case TYPE_CODE_METHOD
:
1493 if (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_NONE
)
1494 INIT_FUNC_SPECIFIC (type
);
1495 gdb_assert (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_FUNC
);
1496 TYPE_MAIN_TYPE (type
)->type_specific
.func_stuff
->self_type
= self_type
;
1499 gdb_assert_not_reached ("bad type");
1503 /* Smash TYPE to be a type of pointers to members of SELF_TYPE with type
1504 TO_TYPE. A member pointer is a wierd thing -- it amounts to a
1505 typed offset into a struct, e.g. "an int at offset 8". A MEMBER
1506 TYPE doesn't include the offset (that's the value of the MEMBER
1507 itself), but does include the structure type into which it points
1510 When "smashing" the type, we preserve the objfile that the old type
1511 pointed to, since we aren't changing where the type is actually
1515 smash_to_memberptr_type (struct type
*type
, struct type
*self_type
,
1516 struct type
*to_type
)
1519 type
->set_code (TYPE_CODE_MEMBERPTR
);
1520 TYPE_TARGET_TYPE (type
) = to_type
;
1521 set_type_self_type (type
, self_type
);
1522 /* Assume that a data member pointer is the same size as a normal
1525 = gdbarch_ptr_bit (get_type_arch (to_type
)) / TARGET_CHAR_BIT
;
1528 /* Smash TYPE to be a type of pointer to methods type TO_TYPE.
1530 When "smashing" the type, we preserve the objfile that the old type
1531 pointed to, since we aren't changing where the type is actually
1535 smash_to_methodptr_type (struct type
*type
, struct type
*to_type
)
1538 type
->set_code (TYPE_CODE_METHODPTR
);
1539 TYPE_TARGET_TYPE (type
) = to_type
;
1540 set_type_self_type (type
, TYPE_SELF_TYPE (to_type
));
1541 TYPE_LENGTH (type
) = cplus_method_ptr_size (to_type
);
1544 /* Smash TYPE to be a type of method of SELF_TYPE with type TO_TYPE.
1545 METHOD just means `function that gets an extra "this" argument'.
1547 When "smashing" the type, we preserve the objfile that the old type
1548 pointed to, since we aren't changing where the type is actually
1552 smash_to_method_type (struct type
*type
, struct type
*self_type
,
1553 struct type
*to_type
, struct field
*args
,
1554 int nargs
, int varargs
)
1557 type
->set_code (TYPE_CODE_METHOD
);
1558 TYPE_TARGET_TYPE (type
) = to_type
;
1559 set_type_self_type (type
, self_type
);
1560 type
->set_fields (args
);
1561 type
->set_num_fields (nargs
);
1563 TYPE_VARARGS (type
) = 1;
1564 TYPE_LENGTH (type
) = 1; /* In practice, this is never needed. */
1567 /* A wrapper of TYPE_NAME which calls error if the type is anonymous.
1568 Since GCC PR debug/47510 DWARF provides associated information to detect the
1569 anonymous class linkage name from its typedef.
1571 Parameter TYPE should not yet have CHECK_TYPEDEF applied, this function will
1575 type_name_or_error (struct type
*type
)
1577 struct type
*saved_type
= type
;
1579 struct objfile
*objfile
;
1581 type
= check_typedef (type
);
1583 name
= type
->name ();
1587 name
= saved_type
->name ();
1588 objfile
= TYPE_OBJFILE (saved_type
);
1589 error (_("Invalid anonymous type %s [in module %s], GCC PR debug/47510 bug?"),
1590 name
? name
: "<anonymous>",
1591 objfile
? objfile_name (objfile
) : "<arch>");
1594 /* Lookup a typedef or primitive type named NAME, visible in lexical
1595 block BLOCK. If NOERR is nonzero, return zero if NAME is not
1596 suitably defined. */
1599 lookup_typename (const struct language_defn
*language
,
1601 const struct block
*block
, int noerr
)
1605 sym
= lookup_symbol_in_language (name
, block
, VAR_DOMAIN
,
1606 language
->la_language
, NULL
).symbol
;
1607 if (sym
!= NULL
&& SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
1608 return SYMBOL_TYPE (sym
);
1612 error (_("No type named %s."), name
);
1616 lookup_unsigned_typename (const struct language_defn
*language
,
1619 char *uns
= (char *) alloca (strlen (name
) + 10);
1621 strcpy (uns
, "unsigned ");
1622 strcpy (uns
+ 9, name
);
1623 return lookup_typename (language
, uns
, NULL
, 0);
1627 lookup_signed_typename (const struct language_defn
*language
, const char *name
)
1630 char *uns
= (char *) alloca (strlen (name
) + 8);
1632 strcpy (uns
, "signed ");
1633 strcpy (uns
+ 7, name
);
1634 t
= lookup_typename (language
, uns
, NULL
, 1);
1635 /* If we don't find "signed FOO" just try again with plain "FOO". */
1638 return lookup_typename (language
, name
, NULL
, 0);
1641 /* Lookup a structure type named "struct NAME",
1642 visible in lexical block BLOCK. */
1645 lookup_struct (const char *name
, const struct block
*block
)
1649 sym
= lookup_symbol (name
, block
, STRUCT_DOMAIN
, 0).symbol
;
1653 error (_("No struct type named %s."), name
);
1655 if (SYMBOL_TYPE (sym
)->code () != TYPE_CODE_STRUCT
)
1657 error (_("This context has class, union or enum %s, not a struct."),
1660 return (SYMBOL_TYPE (sym
));
1663 /* Lookup a union type named "union NAME",
1664 visible in lexical block BLOCK. */
1667 lookup_union (const char *name
, const struct block
*block
)
1672 sym
= lookup_symbol (name
, block
, STRUCT_DOMAIN
, 0).symbol
;
1675 error (_("No union type named %s."), name
);
1677 t
= SYMBOL_TYPE (sym
);
1679 if (t
->code () == TYPE_CODE_UNION
)
1682 /* If we get here, it's not a union. */
1683 error (_("This context has class, struct or enum %s, not a union."),
1687 /* Lookup an enum type named "enum NAME",
1688 visible in lexical block BLOCK. */
1691 lookup_enum (const char *name
, const struct block
*block
)
1695 sym
= lookup_symbol (name
, block
, STRUCT_DOMAIN
, 0).symbol
;
1698 error (_("No enum type named %s."), name
);
1700 if (SYMBOL_TYPE (sym
)->code () != TYPE_CODE_ENUM
)
1702 error (_("This context has class, struct or union %s, not an enum."),
1705 return (SYMBOL_TYPE (sym
));
1708 /* Lookup a template type named "template NAME<TYPE>",
1709 visible in lexical block BLOCK. */
1712 lookup_template_type (const char *name
, struct type
*type
,
1713 const struct block
*block
)
1716 char *nam
= (char *)
1717 alloca (strlen (name
) + strlen (type
->name ()) + 4);
1721 strcat (nam
, type
->name ());
1722 strcat (nam
, " >"); /* FIXME, extra space still introduced in gcc? */
1724 sym
= lookup_symbol (nam
, block
, VAR_DOMAIN
, 0).symbol
;
1728 error (_("No template type named %s."), name
);
1730 if (SYMBOL_TYPE (sym
)->code () != TYPE_CODE_STRUCT
)
1732 error (_("This context has class, union or enum %s, not a struct."),
1735 return (SYMBOL_TYPE (sym
));
1738 /* See gdbtypes.h. */
1741 lookup_struct_elt (struct type
*type
, const char *name
, int noerr
)
1747 type
= check_typedef (type
);
1748 if (type
->code () != TYPE_CODE_PTR
1749 && type
->code () != TYPE_CODE_REF
)
1751 type
= TYPE_TARGET_TYPE (type
);
1754 if (type
->code () != TYPE_CODE_STRUCT
1755 && type
->code () != TYPE_CODE_UNION
)
1757 std::string type_name
= type_to_string (type
);
1758 error (_("Type %s is not a structure or union type."),
1759 type_name
.c_str ());
1762 for (i
= type
->num_fields () - 1; i
>= TYPE_N_BASECLASSES (type
); i
--)
1764 const char *t_field_name
= TYPE_FIELD_NAME (type
, i
);
1766 if (t_field_name
&& (strcmp_iw (t_field_name
, name
) == 0))
1768 return {&type
->field (i
), TYPE_FIELD_BITPOS (type
, i
)};
1770 else if (!t_field_name
|| *t_field_name
== '\0')
1773 = lookup_struct_elt (type
->field (i
).type (), name
, 1);
1774 if (elt
.field
!= NULL
)
1776 elt
.offset
+= TYPE_FIELD_BITPOS (type
, i
);
1782 /* OK, it's not in this class. Recursively check the baseclasses. */
1783 for (i
= TYPE_N_BASECLASSES (type
) - 1; i
>= 0; i
--)
1785 struct_elt elt
= lookup_struct_elt (TYPE_BASECLASS (type
, i
), name
, 1);
1786 if (elt
.field
!= NULL
)
1791 return {nullptr, 0};
1793 std::string type_name
= type_to_string (type
);
1794 error (_("Type %s has no component named %s."), type_name
.c_str (), name
);
1797 /* See gdbtypes.h. */
1800 lookup_struct_elt_type (struct type
*type
, const char *name
, int noerr
)
1802 struct_elt elt
= lookup_struct_elt (type
, name
, noerr
);
1803 if (elt
.field
!= NULL
)
1804 return elt
.field
->type ();
1809 /* Store in *MAX the largest number representable by unsigned integer type
1813 get_unsigned_type_max (struct type
*type
, ULONGEST
*max
)
1817 type
= check_typedef (type
);
1818 gdb_assert (type
->code () == TYPE_CODE_INT
&& TYPE_UNSIGNED (type
));
1819 gdb_assert (TYPE_LENGTH (type
) <= sizeof (ULONGEST
));
1821 /* Written this way to avoid overflow. */
1822 n
= TYPE_LENGTH (type
) * TARGET_CHAR_BIT
;
1823 *max
= ((((ULONGEST
) 1 << (n
- 1)) - 1) << 1) | 1;
1826 /* Store in *MIN, *MAX the smallest and largest numbers representable by
1827 signed integer type TYPE. */
1830 get_signed_type_minmax (struct type
*type
, LONGEST
*min
, LONGEST
*max
)
1834 type
= check_typedef (type
);
1835 gdb_assert (type
->code () == TYPE_CODE_INT
&& !TYPE_UNSIGNED (type
));
1836 gdb_assert (TYPE_LENGTH (type
) <= sizeof (LONGEST
));
1838 n
= TYPE_LENGTH (type
) * TARGET_CHAR_BIT
;
1839 *min
= -((ULONGEST
) 1 << (n
- 1));
1840 *max
= ((ULONGEST
) 1 << (n
- 1)) - 1;
1843 /* Internal routine called by TYPE_VPTR_FIELDNO to return the value of
1844 cplus_stuff.vptr_fieldno.
1846 cplus_stuff is initialized to cplus_struct_default which does not
1847 set vptr_fieldno to -1 for portability reasons (IWBN to use C99
1848 designated initializers). We cope with that here. */
1851 internal_type_vptr_fieldno (struct type
*type
)
1853 type
= check_typedef (type
);
1854 gdb_assert (type
->code () == TYPE_CODE_STRUCT
1855 || type
->code () == TYPE_CODE_UNION
);
1856 if (!HAVE_CPLUS_STRUCT (type
))
1858 return TYPE_RAW_CPLUS_SPECIFIC (type
)->vptr_fieldno
;
1861 /* Set the value of cplus_stuff.vptr_fieldno. */
1864 set_type_vptr_fieldno (struct type
*type
, int fieldno
)
1866 type
= check_typedef (type
);
1867 gdb_assert (type
->code () == TYPE_CODE_STRUCT
1868 || type
->code () == TYPE_CODE_UNION
);
1869 if (!HAVE_CPLUS_STRUCT (type
))
1870 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
1871 TYPE_RAW_CPLUS_SPECIFIC (type
)->vptr_fieldno
= fieldno
;
1874 /* Internal routine called by TYPE_VPTR_BASETYPE to return the value of
1875 cplus_stuff.vptr_basetype. */
1878 internal_type_vptr_basetype (struct type
*type
)
1880 type
= check_typedef (type
);
1881 gdb_assert (type
->code () == TYPE_CODE_STRUCT
1882 || type
->code () == TYPE_CODE_UNION
);
1883 gdb_assert (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_CPLUS_STUFF
);
1884 return TYPE_RAW_CPLUS_SPECIFIC (type
)->vptr_basetype
;
1887 /* Set the value of cplus_stuff.vptr_basetype. */
1890 set_type_vptr_basetype (struct type
*type
, struct type
*basetype
)
1892 type
= check_typedef (type
);
1893 gdb_assert (type
->code () == TYPE_CODE_STRUCT
1894 || type
->code () == TYPE_CODE_UNION
);
1895 if (!HAVE_CPLUS_STRUCT (type
))
1896 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
1897 TYPE_RAW_CPLUS_SPECIFIC (type
)->vptr_basetype
= basetype
;
1900 /* Lookup the vptr basetype/fieldno values for TYPE.
1901 If found store vptr_basetype in *BASETYPEP if non-NULL, and return
1902 vptr_fieldno. Also, if found and basetype is from the same objfile,
1904 If not found, return -1 and ignore BASETYPEP.
1905 Callers should be aware that in some cases (for example,
1906 the type or one of its baseclasses is a stub type and we are
1907 debugging a .o file, or the compiler uses DWARF-2 and is not GCC),
1908 this function will not be able to find the
1909 virtual function table pointer, and vptr_fieldno will remain -1 and
1910 vptr_basetype will remain NULL or incomplete. */
1913 get_vptr_fieldno (struct type
*type
, struct type
**basetypep
)
1915 type
= check_typedef (type
);
1917 if (TYPE_VPTR_FIELDNO (type
) < 0)
1921 /* We must start at zero in case the first (and only) baseclass
1922 is virtual (and hence we cannot share the table pointer). */
1923 for (i
= 0; i
< TYPE_N_BASECLASSES (type
); i
++)
1925 struct type
*baseclass
= check_typedef (TYPE_BASECLASS (type
, i
));
1927 struct type
*basetype
;
1929 fieldno
= get_vptr_fieldno (baseclass
, &basetype
);
1932 /* If the type comes from a different objfile we can't cache
1933 it, it may have a different lifetime. PR 2384 */
1934 if (TYPE_OBJFILE (type
) == TYPE_OBJFILE (basetype
))
1936 set_type_vptr_fieldno (type
, fieldno
);
1937 set_type_vptr_basetype (type
, basetype
);
1940 *basetypep
= basetype
;
1951 *basetypep
= TYPE_VPTR_BASETYPE (type
);
1952 return TYPE_VPTR_FIELDNO (type
);
1957 stub_noname_complaint (void)
1959 complaint (_("stub type has NULL name"));
1962 /* Return nonzero if TYPE has a DYN_PROP_BYTE_STRIDE dynamic property
1963 attached to it, and that property has a non-constant value. */
1966 array_type_has_dynamic_stride (struct type
*type
)
1968 struct dynamic_prop
*prop
= type
->dyn_prop (DYN_PROP_BYTE_STRIDE
);
1970 return (prop
!= NULL
&& prop
->kind
!= PROP_CONST
);
1973 /* Worker for is_dynamic_type. */
1976 is_dynamic_type_internal (struct type
*type
, int top_level
)
1978 type
= check_typedef (type
);
1980 /* We only want to recognize references at the outermost level. */
1981 if (top_level
&& type
->code () == TYPE_CODE_REF
)
1982 type
= check_typedef (TYPE_TARGET_TYPE (type
));
1984 /* Types that have a dynamic TYPE_DATA_LOCATION are considered
1985 dynamic, even if the type itself is statically defined.
1986 From a user's point of view, this may appear counter-intuitive;
1987 but it makes sense in this context, because the point is to determine
1988 whether any part of the type needs to be resolved before it can
1990 if (TYPE_DATA_LOCATION (type
) != NULL
1991 && (TYPE_DATA_LOCATION_KIND (type
) == PROP_LOCEXPR
1992 || TYPE_DATA_LOCATION_KIND (type
) == PROP_LOCLIST
))
1995 if (TYPE_ASSOCIATED_PROP (type
))
1998 if (TYPE_ALLOCATED_PROP (type
))
2001 struct dynamic_prop
*prop
= type
->dyn_prop (DYN_PROP_VARIANT_PARTS
);
2002 if (prop
!= nullptr && prop
->kind
!= PROP_TYPE
)
2005 if (TYPE_HAS_DYNAMIC_LENGTH (type
))
2008 switch (type
->code ())
2010 case TYPE_CODE_RANGE
:
2012 /* A range type is obviously dynamic if it has at least one
2013 dynamic bound. But also consider the range type to be
2014 dynamic when its subtype is dynamic, even if the bounds
2015 of the range type are static. It allows us to assume that
2016 the subtype of a static range type is also static. */
2017 return (!has_static_range (type
->bounds ())
2018 || is_dynamic_type_internal (TYPE_TARGET_TYPE (type
), 0));
2021 case TYPE_CODE_STRING
:
2022 /* Strings are very much like an array of characters, and can be
2023 treated as one here. */
2024 case TYPE_CODE_ARRAY
:
2026 gdb_assert (type
->num_fields () == 1);
2028 /* The array is dynamic if either the bounds are dynamic... */
2029 if (is_dynamic_type_internal (type
->index_type (), 0))
2031 /* ... or the elements it contains have a dynamic contents... */
2032 if (is_dynamic_type_internal (TYPE_TARGET_TYPE (type
), 0))
2034 /* ... or if it has a dynamic stride... */
2035 if (array_type_has_dynamic_stride (type
))
2040 case TYPE_CODE_STRUCT
:
2041 case TYPE_CODE_UNION
:
2045 bool is_cplus
= HAVE_CPLUS_STRUCT (type
);
2047 for (i
= 0; i
< type
->num_fields (); ++i
)
2049 /* Static fields can be ignored here. */
2050 if (field_is_static (&type
->field (i
)))
2052 /* If the field has dynamic type, then so does TYPE. */
2053 if (is_dynamic_type_internal (type
->field (i
).type (), 0))
2055 /* If the field is at a fixed offset, then it is not
2057 if (TYPE_FIELD_LOC_KIND (type
, i
) != FIELD_LOC_KIND_DWARF_BLOCK
)
2059 /* Do not consider C++ virtual base types to be dynamic
2060 due to the field's offset being dynamic; these are
2061 handled via other means. */
2062 if (is_cplus
&& BASETYPE_VIA_VIRTUAL (type
, i
))
2073 /* See gdbtypes.h. */
2076 is_dynamic_type (struct type
*type
)
2078 return is_dynamic_type_internal (type
, 1);
2081 static struct type
*resolve_dynamic_type_internal
2082 (struct type
*type
, struct property_addr_info
*addr_stack
, int top_level
);
2084 /* Given a dynamic range type (dyn_range_type) and a stack of
2085 struct property_addr_info elements, return a static version
2088 static struct type
*
2089 resolve_dynamic_range (struct type
*dyn_range_type
,
2090 struct property_addr_info
*addr_stack
)
2093 struct type
*static_range_type
, *static_target_type
;
2094 struct dynamic_prop low_bound
, high_bound
, stride
;
2096 gdb_assert (dyn_range_type
->code () == TYPE_CODE_RANGE
);
2098 const struct dynamic_prop
*prop
= &dyn_range_type
->bounds ()->low
;
2099 if (dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2101 low_bound
.kind
= PROP_CONST
;
2102 low_bound
.data
.const_val
= value
;
2106 low_bound
.kind
= PROP_UNDEFINED
;
2107 low_bound
.data
.const_val
= 0;
2110 prop
= &dyn_range_type
->bounds ()->high
;
2111 if (dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2113 high_bound
.kind
= PROP_CONST
;
2114 high_bound
.data
.const_val
= value
;
2116 if (dyn_range_type
->bounds ()->flag_upper_bound_is_count
)
2117 high_bound
.data
.const_val
2118 = low_bound
.data
.const_val
+ high_bound
.data
.const_val
- 1;
2122 high_bound
.kind
= PROP_UNDEFINED
;
2123 high_bound
.data
.const_val
= 0;
2126 bool byte_stride_p
= dyn_range_type
->bounds ()->flag_is_byte_stride
;
2127 prop
= &dyn_range_type
->bounds ()->stride
;
2128 if (dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2130 stride
.kind
= PROP_CONST
;
2131 stride
.data
.const_val
= value
;
2133 /* If we have a bit stride that is not an exact number of bytes then
2134 I really don't think this is going to work with current GDB, the
2135 array indexing code in GDB seems to be pretty heavily tied to byte
2136 offsets right now. Assuming 8 bits in a byte. */
2137 struct gdbarch
*gdbarch
= get_type_arch (dyn_range_type
);
2138 int unit_size
= gdbarch_addressable_memory_unit_size (gdbarch
);
2139 if (!byte_stride_p
&& (value
% (unit_size
* 8)) != 0)
2140 error (_("bit strides that are not a multiple of the byte size "
2141 "are currently not supported"));
2145 stride
.kind
= PROP_UNDEFINED
;
2146 stride
.data
.const_val
= 0;
2147 byte_stride_p
= true;
2151 = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (dyn_range_type
),
2153 LONGEST bias
= dyn_range_type
->bounds ()->bias
;
2154 static_range_type
= create_range_type_with_stride
2155 (copy_type (dyn_range_type
), static_target_type
,
2156 &low_bound
, &high_bound
, bias
, &stride
, byte_stride_p
);
2157 static_range_type
->bounds ()->flag_bound_evaluated
= 1;
2158 return static_range_type
;
2161 /* Resolves dynamic bound values of an array or string type TYPE to static
2162 ones. ADDR_STACK is a stack of struct property_addr_info to be used if
2163 needed during the dynamic resolution. */
2165 static struct type
*
2166 resolve_dynamic_array_or_string (struct type
*type
,
2167 struct property_addr_info
*addr_stack
)
2170 struct type
*elt_type
;
2171 struct type
*range_type
;
2172 struct type
*ary_dim
;
2173 struct dynamic_prop
*prop
;
2174 unsigned int bit_stride
= 0;
2176 /* For dynamic type resolution strings can be treated like arrays of
2178 gdb_assert (type
->code () == TYPE_CODE_ARRAY
2179 || type
->code () == TYPE_CODE_STRING
);
2181 type
= copy_type (type
);
2184 range_type
= check_typedef (elt_type
->index_type ());
2185 range_type
= resolve_dynamic_range (range_type
, addr_stack
);
2187 /* Resolve allocated/associated here before creating a new array type, which
2188 will update the length of the array accordingly. */
2189 prop
= TYPE_ALLOCATED_PROP (type
);
2190 if (prop
!= NULL
&& dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2192 TYPE_DYN_PROP_ADDR (prop
) = value
;
2193 TYPE_DYN_PROP_KIND (prop
) = PROP_CONST
;
2195 prop
= TYPE_ASSOCIATED_PROP (type
);
2196 if (prop
!= NULL
&& dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2198 TYPE_DYN_PROP_ADDR (prop
) = value
;
2199 TYPE_DYN_PROP_KIND (prop
) = PROP_CONST
;
2202 ary_dim
= check_typedef (TYPE_TARGET_TYPE (elt_type
));
2204 if (ary_dim
!= NULL
&& ary_dim
->code () == TYPE_CODE_ARRAY
)
2205 elt_type
= resolve_dynamic_array_or_string (ary_dim
, addr_stack
);
2207 elt_type
= TYPE_TARGET_TYPE (type
);
2209 prop
= type
->dyn_prop (DYN_PROP_BYTE_STRIDE
);
2212 if (dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2214 type
->remove_dyn_prop (DYN_PROP_BYTE_STRIDE
);
2215 bit_stride
= (unsigned int) (value
* 8);
2219 /* Could be a bug in our code, but it could also happen
2220 if the DWARF info is not correct. Issue a warning,
2221 and assume no byte/bit stride (leave bit_stride = 0). */
2222 warning (_("cannot determine array stride for type %s"),
2223 type
->name () ? type
->name () : "<no name>");
2227 bit_stride
= TYPE_FIELD_BITSIZE (type
, 0);
2229 return create_array_type_with_stride (type
, elt_type
, range_type
, NULL
,
2233 /* Resolve dynamic bounds of members of the union TYPE to static
2234 bounds. ADDR_STACK is a stack of struct property_addr_info
2235 to be used if needed during the dynamic resolution. */
2237 static struct type
*
2238 resolve_dynamic_union (struct type
*type
,
2239 struct property_addr_info
*addr_stack
)
2241 struct type
*resolved_type
;
2243 unsigned int max_len
= 0;
2245 gdb_assert (type
->code () == TYPE_CODE_UNION
);
2247 resolved_type
= copy_type (type
);
2248 resolved_type
->set_fields
2250 TYPE_ALLOC (resolved_type
,
2251 resolved_type
->num_fields () * sizeof (struct field
)));
2252 memcpy (resolved_type
->fields (),
2254 resolved_type
->num_fields () * sizeof (struct field
));
2255 for (i
= 0; i
< resolved_type
->num_fields (); ++i
)
2259 if (field_is_static (&type
->field (i
)))
2262 t
= resolve_dynamic_type_internal (resolved_type
->field (i
).type (),
2264 resolved_type
->field (i
).set_type (t
);
2266 struct type
*real_type
= check_typedef (t
);
2267 if (TYPE_LENGTH (real_type
) > max_len
)
2268 max_len
= TYPE_LENGTH (real_type
);
2271 TYPE_LENGTH (resolved_type
) = max_len
;
2272 return resolved_type
;
2275 /* See gdbtypes.h. */
2278 variant::matches (ULONGEST value
, bool is_unsigned
) const
2280 for (const discriminant_range
&range
: discriminants
)
2281 if (range
.contains (value
, is_unsigned
))
2287 compute_variant_fields_inner (struct type
*type
,
2288 struct property_addr_info
*addr_stack
,
2289 const variant_part
&part
,
2290 std::vector
<bool> &flags
);
2292 /* A helper function to determine which variant fields will be active.
2293 This handles both the variant's direct fields, and any variant
2294 parts embedded in this variant. TYPE is the type we're examining.
2295 ADDR_STACK holds information about the concrete object. VARIANT is
2296 the current variant to be handled. FLAGS is where the results are
2297 stored -- this function sets the Nth element in FLAGS if the
2298 corresponding field is enabled. ENABLED is whether this variant is
2302 compute_variant_fields_recurse (struct type
*type
,
2303 struct property_addr_info
*addr_stack
,
2304 const variant
&variant
,
2305 std::vector
<bool> &flags
,
2308 for (int field
= variant
.first_field
; field
< variant
.last_field
; ++field
)
2309 flags
[field
] = enabled
;
2311 for (const variant_part
&new_part
: variant
.parts
)
2314 compute_variant_fields_inner (type
, addr_stack
, new_part
, flags
);
2317 for (const auto &sub_variant
: new_part
.variants
)
2318 compute_variant_fields_recurse (type
, addr_stack
, sub_variant
,
2324 /* A helper function to determine which variant fields will be active.
2325 This evaluates the discriminant, decides which variant (if any) is
2326 active, and then updates FLAGS to reflect which fields should be
2327 available. TYPE is the type we're examining. ADDR_STACK holds
2328 information about the concrete object. VARIANT is the current
2329 variant to be handled. FLAGS is where the results are stored --
2330 this function sets the Nth element in FLAGS if the corresponding
2331 field is enabled. */
2334 compute_variant_fields_inner (struct type
*type
,
2335 struct property_addr_info
*addr_stack
,
2336 const variant_part
&part
,
2337 std::vector
<bool> &flags
)
2339 /* Evaluate the discriminant. */
2340 gdb::optional
<ULONGEST
> discr_value
;
2341 if (part
.discriminant_index
!= -1)
2343 int idx
= part
.discriminant_index
;
2345 if (TYPE_FIELD_LOC_KIND (type
, idx
) != FIELD_LOC_KIND_BITPOS
)
2346 error (_("Cannot determine struct field location"
2347 " (invalid location kind)"));
2349 if (addr_stack
->valaddr
.data () != NULL
)
2350 discr_value
= unpack_field_as_long (type
, addr_stack
->valaddr
.data (),
2354 CORE_ADDR addr
= (addr_stack
->addr
2355 + (TYPE_FIELD_BITPOS (type
, idx
)
2356 / TARGET_CHAR_BIT
));
2358 LONGEST bitsize
= TYPE_FIELD_BITSIZE (type
, idx
);
2359 LONGEST size
= bitsize
/ 8;
2361 size
= TYPE_LENGTH (type
->field (idx
).type ());
2363 gdb_byte bits
[sizeof (ULONGEST
)];
2364 read_memory (addr
, bits
, size
);
2366 LONGEST bitpos
= (TYPE_FIELD_BITPOS (type
, idx
)
2369 discr_value
= unpack_bits_as_long (type
->field (idx
).type (),
2370 bits
, bitpos
, bitsize
);
2374 /* Go through each variant and see which applies. */
2375 const variant
*default_variant
= nullptr;
2376 const variant
*applied_variant
= nullptr;
2377 for (const auto &variant
: part
.variants
)
2379 if (variant
.is_default ())
2380 default_variant
= &variant
;
2381 else if (discr_value
.has_value ()
2382 && variant
.matches (*discr_value
, part
.is_unsigned
))
2384 applied_variant
= &variant
;
2388 if (applied_variant
== nullptr)
2389 applied_variant
= default_variant
;
2391 for (const auto &variant
: part
.variants
)
2392 compute_variant_fields_recurse (type
, addr_stack
, variant
,
2393 flags
, applied_variant
== &variant
);
2396 /* Determine which variant fields are available in TYPE. The enabled
2397 fields are stored in RESOLVED_TYPE. ADDR_STACK holds information
2398 about the concrete object. PARTS describes the top-level variant
2399 parts for this type. */
2402 compute_variant_fields (struct type
*type
,
2403 struct type
*resolved_type
,
2404 struct property_addr_info
*addr_stack
,
2405 const gdb::array_view
<variant_part
> &parts
)
2407 /* Assume all fields are included by default. */
2408 std::vector
<bool> flags (resolved_type
->num_fields (), true);
2410 /* Now disable fields based on the variants that control them. */
2411 for (const auto &part
: parts
)
2412 compute_variant_fields_inner (type
, addr_stack
, part
, flags
);
2414 resolved_type
->set_num_fields
2415 (std::count (flags
.begin (), flags
.end (), true));
2416 resolved_type
->set_fields
2418 TYPE_ALLOC (resolved_type
,
2419 resolved_type
->num_fields () * sizeof (struct field
)));
2422 for (int i
= 0; i
< type
->num_fields (); ++i
)
2427 resolved_type
->field (out
) = type
->field (i
);
2432 /* Resolve dynamic bounds of members of the struct TYPE to static
2433 bounds. ADDR_STACK is a stack of struct property_addr_info to
2434 be used if needed during the dynamic resolution. */
2436 static struct type
*
2437 resolve_dynamic_struct (struct type
*type
,
2438 struct property_addr_info
*addr_stack
)
2440 struct type
*resolved_type
;
2442 unsigned resolved_type_bit_length
= 0;
2444 gdb_assert (type
->code () == TYPE_CODE_STRUCT
);
2445 gdb_assert (type
->num_fields () > 0);
2447 resolved_type
= copy_type (type
);
2449 dynamic_prop
*variant_prop
= resolved_type
->dyn_prop (DYN_PROP_VARIANT_PARTS
);
2450 if (variant_prop
!= nullptr && variant_prop
->kind
== PROP_VARIANT_PARTS
)
2452 compute_variant_fields (type
, resolved_type
, addr_stack
,
2453 *variant_prop
->data
.variant_parts
);
2454 /* We want to leave the property attached, so that the Rust code
2455 can tell whether the type was originally an enum. */
2456 variant_prop
->kind
= PROP_TYPE
;
2457 variant_prop
->data
.original_type
= type
;
2461 resolved_type
->set_fields
2463 TYPE_ALLOC (resolved_type
,
2464 resolved_type
->num_fields () * sizeof (struct field
)));
2465 memcpy (resolved_type
->fields (),
2467 resolved_type
->num_fields () * sizeof (struct field
));
2470 for (i
= 0; i
< resolved_type
->num_fields (); ++i
)
2472 unsigned new_bit_length
;
2473 struct property_addr_info pinfo
;
2475 if (field_is_static (&resolved_type
->field (i
)))
2478 if (TYPE_FIELD_LOC_KIND (resolved_type
, i
) == FIELD_LOC_KIND_DWARF_BLOCK
)
2480 struct dwarf2_property_baton baton
;
2482 = lookup_pointer_type (resolved_type
->field (i
).type ());
2483 baton
.locexpr
= *TYPE_FIELD_DWARF_BLOCK (resolved_type
, i
);
2485 struct dynamic_prop prop
;
2486 prop
.kind
= PROP_LOCEXPR
;
2487 prop
.data
.baton
= &baton
;
2490 if (dwarf2_evaluate_property (&prop
, nullptr, addr_stack
, &addr
,
2492 SET_FIELD_BITPOS (resolved_type
->field (i
),
2493 TARGET_CHAR_BIT
* (addr
- addr_stack
->addr
));
2496 /* As we know this field is not a static field, the field's
2497 field_loc_kind should be FIELD_LOC_KIND_BITPOS. Verify
2498 this is the case, but only trigger a simple error rather
2499 than an internal error if that fails. While failing
2500 that verification indicates a bug in our code, the error
2501 is not severe enough to suggest to the user he stops
2502 his debugging session because of it. */
2503 if (TYPE_FIELD_LOC_KIND (resolved_type
, i
) != FIELD_LOC_KIND_BITPOS
)
2504 error (_("Cannot determine struct field location"
2505 " (invalid location kind)"));
2507 pinfo
.type
= check_typedef (resolved_type
->field (i
).type ());
2508 pinfo
.valaddr
= addr_stack
->valaddr
;
2511 + (TYPE_FIELD_BITPOS (resolved_type
, i
) / TARGET_CHAR_BIT
));
2512 pinfo
.next
= addr_stack
;
2514 resolved_type
->field (i
).set_type
2515 (resolve_dynamic_type_internal (resolved_type
->field (i
).type (),
2517 gdb_assert (TYPE_FIELD_LOC_KIND (resolved_type
, i
)
2518 == FIELD_LOC_KIND_BITPOS
);
2520 new_bit_length
= TYPE_FIELD_BITPOS (resolved_type
, i
);
2521 if (TYPE_FIELD_BITSIZE (resolved_type
, i
) != 0)
2522 new_bit_length
+= TYPE_FIELD_BITSIZE (resolved_type
, i
);
2525 struct type
*real_type
2526 = check_typedef (resolved_type
->field (i
).type ());
2528 new_bit_length
+= (TYPE_LENGTH (real_type
) * TARGET_CHAR_BIT
);
2531 /* Normally, we would use the position and size of the last field
2532 to determine the size of the enclosing structure. But GCC seems
2533 to be encoding the position of some fields incorrectly when
2534 the struct contains a dynamic field that is not placed last.
2535 So we compute the struct size based on the field that has
2536 the highest position + size - probably the best we can do. */
2537 if (new_bit_length
> resolved_type_bit_length
)
2538 resolved_type_bit_length
= new_bit_length
;
2541 /* The length of a type won't change for fortran, but it does for C and Ada.
2542 For fortran the size of dynamic fields might change over time but not the
2543 type length of the structure. If we adapt it, we run into problems
2544 when calculating the element offset for arrays of structs. */
2545 if (current_language
->la_language
!= language_fortran
)
2546 TYPE_LENGTH (resolved_type
)
2547 = (resolved_type_bit_length
+ TARGET_CHAR_BIT
- 1) / TARGET_CHAR_BIT
;
2549 /* The Ada language uses this field as a cache for static fixed types: reset
2550 it as RESOLVED_TYPE must have its own static fixed type. */
2551 TYPE_TARGET_TYPE (resolved_type
) = NULL
;
2553 return resolved_type
;
2556 /* Worker for resolved_dynamic_type. */
2558 static struct type
*
2559 resolve_dynamic_type_internal (struct type
*type
,
2560 struct property_addr_info
*addr_stack
,
2563 struct type
*real_type
= check_typedef (type
);
2564 struct type
*resolved_type
= nullptr;
2565 struct dynamic_prop
*prop
;
2568 if (!is_dynamic_type_internal (real_type
, top_level
))
2571 gdb::optional
<CORE_ADDR
> type_length
;
2572 prop
= TYPE_DYNAMIC_LENGTH (type
);
2574 && dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2575 type_length
= value
;
2577 if (type
->code () == TYPE_CODE_TYPEDEF
)
2579 resolved_type
= copy_type (type
);
2580 TYPE_TARGET_TYPE (resolved_type
)
2581 = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (type
), addr_stack
,
2586 /* Before trying to resolve TYPE, make sure it is not a stub. */
2589 switch (type
->code ())
2593 struct property_addr_info pinfo
;
2595 pinfo
.type
= check_typedef (TYPE_TARGET_TYPE (type
));
2597 if (addr_stack
->valaddr
.data () != NULL
)
2598 pinfo
.addr
= extract_typed_address (addr_stack
->valaddr
.data (),
2601 pinfo
.addr
= read_memory_typed_address (addr_stack
->addr
, type
);
2602 pinfo
.next
= addr_stack
;
2604 resolved_type
= copy_type (type
);
2605 TYPE_TARGET_TYPE (resolved_type
)
2606 = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (type
),
2611 case TYPE_CODE_STRING
:
2612 /* Strings are very much like an array of characters, and can be
2613 treated as one here. */
2614 case TYPE_CODE_ARRAY
:
2615 resolved_type
= resolve_dynamic_array_or_string (type
, addr_stack
);
2618 case TYPE_CODE_RANGE
:
2619 resolved_type
= resolve_dynamic_range (type
, addr_stack
);
2622 case TYPE_CODE_UNION
:
2623 resolved_type
= resolve_dynamic_union (type
, addr_stack
);
2626 case TYPE_CODE_STRUCT
:
2627 resolved_type
= resolve_dynamic_struct (type
, addr_stack
);
2632 if (resolved_type
== nullptr)
2635 if (type_length
.has_value ())
2637 TYPE_LENGTH (resolved_type
) = *type_length
;
2638 resolved_type
->remove_dyn_prop (DYN_PROP_BYTE_SIZE
);
2641 /* Resolve data_location attribute. */
2642 prop
= TYPE_DATA_LOCATION (resolved_type
);
2644 && dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2646 TYPE_DYN_PROP_ADDR (prop
) = value
;
2647 TYPE_DYN_PROP_KIND (prop
) = PROP_CONST
;
2650 return resolved_type
;
2653 /* See gdbtypes.h */
2656 resolve_dynamic_type (struct type
*type
,
2657 gdb::array_view
<const gdb_byte
> valaddr
,
2660 struct property_addr_info pinfo
2661 = {check_typedef (type
), valaddr
, addr
, NULL
};
2663 return resolve_dynamic_type_internal (type
, &pinfo
, 1);
2666 /* See gdbtypes.h */
2669 type::dyn_prop (dynamic_prop_node_kind prop_kind
) const
2671 dynamic_prop_list
*node
= this->main_type
->dyn_prop_list
;
2673 while (node
!= NULL
)
2675 if (node
->prop_kind
== prop_kind
)
2682 /* See gdbtypes.h */
2685 type::add_dyn_prop (dynamic_prop_node_kind prop_kind
, dynamic_prop prop
)
2687 struct dynamic_prop_list
*temp
;
2689 gdb_assert (TYPE_OBJFILE_OWNED (this));
2691 temp
= XOBNEW (&TYPE_OBJFILE (this)->objfile_obstack
,
2692 struct dynamic_prop_list
);
2693 temp
->prop_kind
= prop_kind
;
2695 temp
->next
= this->main_type
->dyn_prop_list
;
2697 this->main_type
->dyn_prop_list
= temp
;
2700 /* See gdbtypes.h. */
2703 type::remove_dyn_prop (dynamic_prop_node_kind kind
)
2705 struct dynamic_prop_list
*prev_node
, *curr_node
;
2707 curr_node
= this->main_type
->dyn_prop_list
;
2710 while (NULL
!= curr_node
)
2712 if (curr_node
->prop_kind
== kind
)
2714 /* Update the linked list but don't free anything.
2715 The property was allocated on objstack and it is not known
2716 if we are on top of it. Nevertheless, everything is released
2717 when the complete objstack is freed. */
2718 if (NULL
== prev_node
)
2719 this->main_type
->dyn_prop_list
= curr_node
->next
;
2721 prev_node
->next
= curr_node
->next
;
2726 prev_node
= curr_node
;
2727 curr_node
= curr_node
->next
;
2731 /* Find the real type of TYPE. This function returns the real type,
2732 after removing all layers of typedefs, and completing opaque or stub
2733 types. Completion changes the TYPE argument, but stripping of
2736 Instance flags (e.g. const/volatile) are preserved as typedefs are
2737 stripped. If necessary a new qualified form of the underlying type
2740 NOTE: This will return a typedef if TYPE_TARGET_TYPE for the typedef has
2741 not been computed and we're either in the middle of reading symbols, or
2742 there was no name for the typedef in the debug info.
2744 NOTE: Lookup of opaque types can throw errors for invalid symbol files.
2745 QUITs in the symbol reading code can also throw.
2746 Thus this function can throw an exception.
2748 If TYPE is a TYPE_CODE_TYPEDEF, its length is updated to the length of
2751 If this is a stubbed struct (i.e. declared as struct foo *), see if
2752 we can find a full definition in some other file. If so, copy this
2753 definition, so we can use it in future. There used to be a comment
2754 (but not any code) that if we don't find a full definition, we'd
2755 set a flag so we don't spend time in the future checking the same
2756 type. That would be a mistake, though--we might load in more
2757 symbols which contain a full definition for the type. */
2760 check_typedef (struct type
*type
)
2762 struct type
*orig_type
= type
;
2763 /* While we're removing typedefs, we don't want to lose qualifiers.
2764 E.g., const/volatile. */
2765 int instance_flags
= TYPE_INSTANCE_FLAGS (type
);
2769 while (type
->code () == TYPE_CODE_TYPEDEF
)
2771 if (!TYPE_TARGET_TYPE (type
))
2776 /* It is dangerous to call lookup_symbol if we are currently
2777 reading a symtab. Infinite recursion is one danger. */
2778 if (currently_reading_symtab
)
2779 return make_qualified_type (type
, instance_flags
, NULL
);
2781 name
= type
->name ();
2782 /* FIXME: shouldn't we look in STRUCT_DOMAIN and/or
2783 VAR_DOMAIN as appropriate? */
2786 stub_noname_complaint ();
2787 return make_qualified_type (type
, instance_flags
, NULL
);
2789 sym
= lookup_symbol (name
, 0, STRUCT_DOMAIN
, 0).symbol
;
2791 TYPE_TARGET_TYPE (type
) = SYMBOL_TYPE (sym
);
2792 else /* TYPE_CODE_UNDEF */
2793 TYPE_TARGET_TYPE (type
) = alloc_type_arch (get_type_arch (type
));
2795 type
= TYPE_TARGET_TYPE (type
);
2797 /* Preserve the instance flags as we traverse down the typedef chain.
2799 Handling address spaces/classes is nasty, what do we do if there's a
2801 E.g., what if an outer typedef marks the type as class_1 and an inner
2802 typedef marks the type as class_2?
2803 This is the wrong place to do such error checking. We leave it to
2804 the code that created the typedef in the first place to flag the
2805 error. We just pick the outer address space (akin to letting the
2806 outer cast in a chain of casting win), instead of assuming
2807 "it can't happen". */
2809 const int ALL_SPACES
= (TYPE_INSTANCE_FLAG_CODE_SPACE
2810 | TYPE_INSTANCE_FLAG_DATA_SPACE
);
2811 const int ALL_CLASSES
= TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL
;
2812 int new_instance_flags
= TYPE_INSTANCE_FLAGS (type
);
2814 /* Treat code vs data spaces and address classes separately. */
2815 if ((instance_flags
& ALL_SPACES
) != 0)
2816 new_instance_flags
&= ~ALL_SPACES
;
2817 if ((instance_flags
& ALL_CLASSES
) != 0)
2818 new_instance_flags
&= ~ALL_CLASSES
;
2820 instance_flags
|= new_instance_flags
;
2824 /* If this is a struct/class/union with no fields, then check
2825 whether a full definition exists somewhere else. This is for
2826 systems where a type definition with no fields is issued for such
2827 types, instead of identifying them as stub types in the first
2830 if (TYPE_IS_OPAQUE (type
)
2831 && opaque_type_resolution
2832 && !currently_reading_symtab
)
2834 const char *name
= type
->name ();
2835 struct type
*newtype
;
2839 stub_noname_complaint ();
2840 return make_qualified_type (type
, instance_flags
, NULL
);
2842 newtype
= lookup_transparent_type (name
);
2846 /* If the resolved type and the stub are in the same
2847 objfile, then replace the stub type with the real deal.
2848 But if they're in separate objfiles, leave the stub
2849 alone; we'll just look up the transparent type every time
2850 we call check_typedef. We can't create pointers between
2851 types allocated to different objfiles, since they may
2852 have different lifetimes. Trying to copy NEWTYPE over to
2853 TYPE's objfile is pointless, too, since you'll have to
2854 move over any other types NEWTYPE refers to, which could
2855 be an unbounded amount of stuff. */
2856 if (TYPE_OBJFILE (newtype
) == TYPE_OBJFILE (type
))
2857 type
= make_qualified_type (newtype
,
2858 TYPE_INSTANCE_FLAGS (type
),
2864 /* Otherwise, rely on the stub flag being set for opaque/stubbed
2866 else if (TYPE_STUB (type
) && !currently_reading_symtab
)
2868 const char *name
= type
->name ();
2869 /* FIXME: shouldn't we look in STRUCT_DOMAIN and/or VAR_DOMAIN
2875 stub_noname_complaint ();
2876 return make_qualified_type (type
, instance_flags
, NULL
);
2878 sym
= lookup_symbol (name
, 0, STRUCT_DOMAIN
, 0).symbol
;
2881 /* Same as above for opaque types, we can replace the stub
2882 with the complete type only if they are in the same
2884 if (TYPE_OBJFILE (SYMBOL_TYPE (sym
)) == TYPE_OBJFILE (type
))
2885 type
= make_qualified_type (SYMBOL_TYPE (sym
),
2886 TYPE_INSTANCE_FLAGS (type
),
2889 type
= SYMBOL_TYPE (sym
);
2893 if (TYPE_TARGET_STUB (type
))
2895 struct type
*target_type
= check_typedef (TYPE_TARGET_TYPE (type
));
2897 if (TYPE_STUB (target_type
) || TYPE_TARGET_STUB (target_type
))
2899 /* Nothing we can do. */
2901 else if (type
->code () == TYPE_CODE_RANGE
)
2903 TYPE_LENGTH (type
) = TYPE_LENGTH (target_type
);
2904 TYPE_TARGET_STUB (type
) = 0;
2906 else if (type
->code () == TYPE_CODE_ARRAY
2907 && update_static_array_size (type
))
2908 TYPE_TARGET_STUB (type
) = 0;
2911 type
= make_qualified_type (type
, instance_flags
, NULL
);
2913 /* Cache TYPE_LENGTH for future use. */
2914 TYPE_LENGTH (orig_type
) = TYPE_LENGTH (type
);
2919 /* Parse a type expression in the string [P..P+LENGTH). If an error
2920 occurs, silently return a void type. */
2922 static struct type
*
2923 safe_parse_type (struct gdbarch
*gdbarch
, char *p
, int length
)
2925 struct ui_file
*saved_gdb_stderr
;
2926 struct type
*type
= NULL
; /* Initialize to keep gcc happy. */
2928 /* Suppress error messages. */
2929 saved_gdb_stderr
= gdb_stderr
;
2930 gdb_stderr
= &null_stream
;
2932 /* Call parse_and_eval_type() without fear of longjmp()s. */
2935 type
= parse_and_eval_type (p
, length
);
2937 catch (const gdb_exception_error
&except
)
2939 type
= builtin_type (gdbarch
)->builtin_void
;
2942 /* Stop suppressing error messages. */
2943 gdb_stderr
= saved_gdb_stderr
;
2948 /* Ugly hack to convert method stubs into method types.
2950 He ain't kiddin'. This demangles the name of the method into a
2951 string including argument types, parses out each argument type,
2952 generates a string casting a zero to that type, evaluates the
2953 string, and stuffs the resulting type into an argtype vector!!!
2954 Then it knows the type of the whole function (including argument
2955 types for overloading), which info used to be in the stab's but was
2956 removed to hack back the space required for them. */
2959 check_stub_method (struct type
*type
, int method_id
, int signature_id
)
2961 struct gdbarch
*gdbarch
= get_type_arch (type
);
2963 char *mangled_name
= gdb_mangle_name (type
, method_id
, signature_id
);
2964 char *demangled_name
= gdb_demangle (mangled_name
,
2965 DMGL_PARAMS
| DMGL_ANSI
);
2966 char *argtypetext
, *p
;
2967 int depth
= 0, argcount
= 1;
2968 struct field
*argtypes
;
2971 /* Make sure we got back a function string that we can use. */
2973 p
= strchr (demangled_name
, '(');
2977 if (demangled_name
== NULL
|| p
== NULL
)
2978 error (_("Internal: Cannot demangle mangled name `%s'."),
2981 /* Now, read in the parameters that define this type. */
2986 if (*p
== '(' || *p
== '<')
2990 else if (*p
== ')' || *p
== '>')
2994 else if (*p
== ',' && depth
== 0)
3002 /* If we read one argument and it was ``void'', don't count it. */
3003 if (startswith (argtypetext
, "(void)"))
3006 /* We need one extra slot, for the THIS pointer. */
3008 argtypes
= (struct field
*)
3009 TYPE_ALLOC (type
, (argcount
+ 1) * sizeof (struct field
));
3012 /* Add THIS pointer for non-static methods. */
3013 f
= TYPE_FN_FIELDLIST1 (type
, method_id
);
3014 if (TYPE_FN_FIELD_STATIC_P (f
, signature_id
))
3018 argtypes
[0].set_type (lookup_pointer_type (type
));
3022 if (*p
!= ')') /* () means no args, skip while. */
3027 if (depth
<= 0 && (*p
== ',' || *p
== ')'))
3029 /* Avoid parsing of ellipsis, they will be handled below.
3030 Also avoid ``void'' as above. */
3031 if (strncmp (argtypetext
, "...", p
- argtypetext
) != 0
3032 && strncmp (argtypetext
, "void", p
- argtypetext
) != 0)
3034 argtypes
[argcount
].set_type
3035 (safe_parse_type (gdbarch
, argtypetext
, p
- argtypetext
));
3038 argtypetext
= p
+ 1;
3041 if (*p
== '(' || *p
== '<')
3045 else if (*p
== ')' || *p
== '>')
3054 TYPE_FN_FIELD_PHYSNAME (f
, signature_id
) = mangled_name
;
3056 /* Now update the old "stub" type into a real type. */
3057 mtype
= TYPE_FN_FIELD_TYPE (f
, signature_id
);
3058 /* MTYPE may currently be a function (TYPE_CODE_FUNC).
3059 We want a method (TYPE_CODE_METHOD). */
3060 smash_to_method_type (mtype
, type
, TYPE_TARGET_TYPE (mtype
),
3061 argtypes
, argcount
, p
[-2] == '.');
3062 TYPE_STUB (mtype
) = 0;
3063 TYPE_FN_FIELD_STUB (f
, signature_id
) = 0;
3065 xfree (demangled_name
);
3068 /* This is the external interface to check_stub_method, above. This
3069 function unstubs all of the signatures for TYPE's METHOD_ID method
3070 name. After calling this function TYPE_FN_FIELD_STUB will be
3071 cleared for each signature and TYPE_FN_FIELDLIST_NAME will be
3074 This function unfortunately can not die until stabs do. */
3077 check_stub_method_group (struct type
*type
, int method_id
)
3079 int len
= TYPE_FN_FIELDLIST_LENGTH (type
, method_id
);
3080 struct fn_field
*f
= TYPE_FN_FIELDLIST1 (type
, method_id
);
3082 for (int j
= 0; j
< len
; j
++)
3084 if (TYPE_FN_FIELD_STUB (f
, j
))
3085 check_stub_method (type
, method_id
, j
);
3089 /* Ensure it is in .rodata (if available) by working around GCC PR 44690. */
3090 const struct cplus_struct_type cplus_struct_default
= { };
3093 allocate_cplus_struct_type (struct type
*type
)
3095 if (HAVE_CPLUS_STRUCT (type
))
3096 /* Structure was already allocated. Nothing more to do. */
3099 TYPE_SPECIFIC_FIELD (type
) = TYPE_SPECIFIC_CPLUS_STUFF
;
3100 TYPE_RAW_CPLUS_SPECIFIC (type
) = (struct cplus_struct_type
*)
3101 TYPE_ALLOC (type
, sizeof (struct cplus_struct_type
));
3102 *(TYPE_RAW_CPLUS_SPECIFIC (type
)) = cplus_struct_default
;
3103 set_type_vptr_fieldno (type
, -1);
3106 const struct gnat_aux_type gnat_aux_default
=
3109 /* Set the TYPE's type-specific kind to TYPE_SPECIFIC_GNAT_STUFF,
3110 and allocate the associated gnat-specific data. The gnat-specific
3111 data is also initialized to gnat_aux_default. */
3114 allocate_gnat_aux_type (struct type
*type
)
3116 TYPE_SPECIFIC_FIELD (type
) = TYPE_SPECIFIC_GNAT_STUFF
;
3117 TYPE_GNAT_SPECIFIC (type
) = (struct gnat_aux_type
*)
3118 TYPE_ALLOC (type
, sizeof (struct gnat_aux_type
));
3119 *(TYPE_GNAT_SPECIFIC (type
)) = gnat_aux_default
;
3122 /* Helper function to initialize a newly allocated type. Set type code
3123 to CODE and initialize the type-specific fields accordingly. */
3126 set_type_code (struct type
*type
, enum type_code code
)
3128 type
->set_code (code
);
3132 case TYPE_CODE_STRUCT
:
3133 case TYPE_CODE_UNION
:
3134 case TYPE_CODE_NAMESPACE
:
3135 INIT_CPLUS_SPECIFIC (type
);
3138 TYPE_SPECIFIC_FIELD (type
) = TYPE_SPECIFIC_FLOATFORMAT
;
3140 case TYPE_CODE_FUNC
:
3141 INIT_FUNC_SPECIFIC (type
);
3146 /* Helper function to verify floating-point format and size.
3147 BIT is the type size in bits; if BIT equals -1, the size is
3148 determined by the floatformat. Returns size to be used. */
3151 verify_floatformat (int bit
, const struct floatformat
*floatformat
)
3153 gdb_assert (floatformat
!= NULL
);
3156 bit
= floatformat
->totalsize
;
3158 gdb_assert (bit
>= 0);
3159 gdb_assert (bit
>= floatformat
->totalsize
);
3164 /* Return the floating-point format for a floating-point variable of
3167 const struct floatformat
*
3168 floatformat_from_type (const struct type
*type
)
3170 gdb_assert (type
->code () == TYPE_CODE_FLT
);
3171 gdb_assert (TYPE_FLOATFORMAT (type
));
3172 return TYPE_FLOATFORMAT (type
);
3175 /* Helper function to initialize the standard scalar types.
3177 If NAME is non-NULL, then it is used to initialize the type name.
3178 Note that NAME is not copied; it is required to have a lifetime at
3179 least as long as OBJFILE. */
3182 init_type (struct objfile
*objfile
, enum type_code code
, int bit
,
3187 type
= alloc_type (objfile
);
3188 set_type_code (type
, code
);
3189 gdb_assert ((bit
% TARGET_CHAR_BIT
) == 0);
3190 TYPE_LENGTH (type
) = bit
/ TARGET_CHAR_BIT
;
3191 type
->set_name (name
);
3196 /* Allocate a TYPE_CODE_ERROR type structure associated with OBJFILE,
3197 to use with variables that have no debug info. NAME is the type
3200 static struct type
*
3201 init_nodebug_var_type (struct objfile
*objfile
, const char *name
)
3203 return init_type (objfile
, TYPE_CODE_ERROR
, 0, name
);
3206 /* Allocate a TYPE_CODE_INT type structure associated with OBJFILE.
3207 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
3208 the type's TYPE_UNSIGNED flag. NAME is the type name. */
3211 init_integer_type (struct objfile
*objfile
,
3212 int bit
, int unsigned_p
, const char *name
)
3216 t
= init_type (objfile
, TYPE_CODE_INT
, bit
, name
);
3218 TYPE_UNSIGNED (t
) = 1;
3223 /* Allocate a TYPE_CODE_CHAR type structure associated with OBJFILE.
3224 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
3225 the type's TYPE_UNSIGNED flag. NAME is the type name. */
3228 init_character_type (struct objfile
*objfile
,
3229 int bit
, int unsigned_p
, const char *name
)
3233 t
= init_type (objfile
, TYPE_CODE_CHAR
, bit
, name
);
3235 TYPE_UNSIGNED (t
) = 1;
3240 /* Allocate a TYPE_CODE_BOOL type structure associated with OBJFILE.
3241 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
3242 the type's TYPE_UNSIGNED flag. NAME is the type name. */
3245 init_boolean_type (struct objfile
*objfile
,
3246 int bit
, int unsigned_p
, const char *name
)
3250 t
= init_type (objfile
, TYPE_CODE_BOOL
, bit
, name
);
3252 TYPE_UNSIGNED (t
) = 1;
3257 /* Allocate a TYPE_CODE_FLT type structure associated with OBJFILE.
3258 BIT is the type size in bits; if BIT equals -1, the size is
3259 determined by the floatformat. NAME is the type name. Set the
3260 TYPE_FLOATFORMAT from FLOATFORMATS. BYTE_ORDER is the byte order
3261 to use. If it is BFD_ENDIAN_UNKNOWN (the default), then the byte
3262 order of the objfile's architecture is used. */
3265 init_float_type (struct objfile
*objfile
,
3266 int bit
, const char *name
,
3267 const struct floatformat
**floatformats
,
3268 enum bfd_endian byte_order
)
3270 if (byte_order
== BFD_ENDIAN_UNKNOWN
)
3272 struct gdbarch
*gdbarch
= objfile
->arch ();
3273 byte_order
= gdbarch_byte_order (gdbarch
);
3275 const struct floatformat
*fmt
= floatformats
[byte_order
];
3278 bit
= verify_floatformat (bit
, fmt
);
3279 t
= init_type (objfile
, TYPE_CODE_FLT
, bit
, name
);
3280 TYPE_FLOATFORMAT (t
) = fmt
;
3285 /* Allocate a TYPE_CODE_DECFLOAT type structure associated with OBJFILE.
3286 BIT is the type size in bits. NAME is the type name. */
3289 init_decfloat_type (struct objfile
*objfile
, int bit
, const char *name
)
3293 t
= init_type (objfile
, TYPE_CODE_DECFLOAT
, bit
, name
);
3297 /* Allocate a TYPE_CODE_COMPLEX type structure. NAME is the type
3298 name. TARGET_TYPE is the component type. */
3301 init_complex_type (const char *name
, struct type
*target_type
)
3305 gdb_assert (target_type
->code () == TYPE_CODE_INT
3306 || target_type
->code () == TYPE_CODE_FLT
);
3308 if (TYPE_MAIN_TYPE (target_type
)->flds_bnds
.complex_type
== nullptr)
3310 if (name
== nullptr)
3313 = (char *) TYPE_ALLOC (target_type
,
3314 strlen (target_type
->name ())
3315 + strlen ("_Complex ") + 1);
3316 strcpy (new_name
, "_Complex ");
3317 strcat (new_name
, target_type
->name ());
3321 t
= alloc_type_copy (target_type
);
3322 set_type_code (t
, TYPE_CODE_COMPLEX
);
3323 TYPE_LENGTH (t
) = 2 * TYPE_LENGTH (target_type
);
3326 TYPE_TARGET_TYPE (t
) = target_type
;
3327 TYPE_MAIN_TYPE (target_type
)->flds_bnds
.complex_type
= t
;
3330 return TYPE_MAIN_TYPE (target_type
)->flds_bnds
.complex_type
;
3333 /* Allocate a TYPE_CODE_PTR type structure associated with OBJFILE.
3334 BIT is the pointer type size in bits. NAME is the type name.
3335 TARGET_TYPE is the pointer target type. Always sets the pointer type's
3336 TYPE_UNSIGNED flag. */
3339 init_pointer_type (struct objfile
*objfile
,
3340 int bit
, const char *name
, struct type
*target_type
)
3344 t
= init_type (objfile
, TYPE_CODE_PTR
, bit
, name
);
3345 TYPE_TARGET_TYPE (t
) = target_type
;
3346 TYPE_UNSIGNED (t
) = 1;
3350 /* See gdbtypes.h. */
3353 type_raw_align (struct type
*type
)
3355 if (type
->align_log2
!= 0)
3356 return 1 << (type
->align_log2
- 1);
3360 /* See gdbtypes.h. */
3363 type_align (struct type
*type
)
3365 /* Check alignment provided in the debug information. */
3366 unsigned raw_align
= type_raw_align (type
);
3370 /* Allow the architecture to provide an alignment. */
3371 struct gdbarch
*arch
= get_type_arch (type
);
3372 ULONGEST align
= gdbarch_type_align (arch
, type
);
3376 switch (type
->code ())
3379 case TYPE_CODE_FUNC
:
3380 case TYPE_CODE_FLAGS
:
3382 case TYPE_CODE_RANGE
:
3384 case TYPE_CODE_ENUM
:
3386 case TYPE_CODE_RVALUE_REF
:
3387 case TYPE_CODE_CHAR
:
3388 case TYPE_CODE_BOOL
:
3389 case TYPE_CODE_DECFLOAT
:
3390 case TYPE_CODE_METHODPTR
:
3391 case TYPE_CODE_MEMBERPTR
:
3392 align
= type_length_units (check_typedef (type
));
3395 case TYPE_CODE_ARRAY
:
3396 case TYPE_CODE_COMPLEX
:
3397 case TYPE_CODE_TYPEDEF
:
3398 align
= type_align (TYPE_TARGET_TYPE (type
));
3401 case TYPE_CODE_STRUCT
:
3402 case TYPE_CODE_UNION
:
3404 int number_of_non_static_fields
= 0;
3405 for (unsigned i
= 0; i
< type
->num_fields (); ++i
)
3407 if (!field_is_static (&type
->field (i
)))
3409 number_of_non_static_fields
++;
3410 ULONGEST f_align
= type_align (type
->field (i
).type ());
3413 /* Don't pretend we know something we don't. */
3417 if (f_align
> align
)
3421 /* A struct with no fields, or with only static fields has an
3423 if (number_of_non_static_fields
== 0)
3429 case TYPE_CODE_STRING
:
3430 /* Not sure what to do here, and these can't appear in C or C++
3434 case TYPE_CODE_VOID
:
3438 case TYPE_CODE_ERROR
:
3439 case TYPE_CODE_METHOD
:
3444 if ((align
& (align
- 1)) != 0)
3446 /* Not a power of 2, so pass. */
3453 /* See gdbtypes.h. */
3456 set_type_align (struct type
*type
, ULONGEST align
)
3458 /* Must be a power of 2. Zero is ok. */
3459 gdb_assert ((align
& (align
- 1)) == 0);
3461 unsigned result
= 0;
3468 if (result
>= (1 << TYPE_ALIGN_BITS
))
3471 type
->align_log2
= result
;
3476 /* Queries on types. */
3479 can_dereference (struct type
*t
)
3481 /* FIXME: Should we return true for references as well as
3483 t
= check_typedef (t
);
3486 && t
->code () == TYPE_CODE_PTR
3487 && TYPE_TARGET_TYPE (t
)->code () != TYPE_CODE_VOID
);
3491 is_integral_type (struct type
*t
)
3493 t
= check_typedef (t
);
3496 && ((t
->code () == TYPE_CODE_INT
)
3497 || (t
->code () == TYPE_CODE_ENUM
)
3498 || (t
->code () == TYPE_CODE_FLAGS
)
3499 || (t
->code () == TYPE_CODE_CHAR
)
3500 || (t
->code () == TYPE_CODE_RANGE
)
3501 || (t
->code () == TYPE_CODE_BOOL
)));
3505 is_floating_type (struct type
*t
)
3507 t
= check_typedef (t
);
3510 && ((t
->code () == TYPE_CODE_FLT
)
3511 || (t
->code () == TYPE_CODE_DECFLOAT
)));
3514 /* Return true if TYPE is scalar. */
3517 is_scalar_type (struct type
*type
)
3519 type
= check_typedef (type
);
3521 switch (type
->code ())
3523 case TYPE_CODE_ARRAY
:
3524 case TYPE_CODE_STRUCT
:
3525 case TYPE_CODE_UNION
:
3527 case TYPE_CODE_STRING
:
3534 /* Return true if T is scalar, or a composite type which in practice has
3535 the memory layout of a scalar type. E.g., an array or struct with only
3536 one scalar element inside it, or a union with only scalar elements. */
3539 is_scalar_type_recursive (struct type
*t
)
3541 t
= check_typedef (t
);
3543 if (is_scalar_type (t
))
3545 /* Are we dealing with an array or string of known dimensions? */
3546 else if ((t
->code () == TYPE_CODE_ARRAY
3547 || t
->code () == TYPE_CODE_STRING
) && t
->num_fields () == 1
3548 && t
->index_type ()->code () == TYPE_CODE_RANGE
)
3550 LONGEST low_bound
, high_bound
;
3551 struct type
*elt_type
= check_typedef (TYPE_TARGET_TYPE (t
));
3553 get_discrete_bounds (t
->index_type (), &low_bound
, &high_bound
);
3555 return high_bound
== low_bound
&& is_scalar_type_recursive (elt_type
);
3557 /* Are we dealing with a struct with one element? */
3558 else if (t
->code () == TYPE_CODE_STRUCT
&& t
->num_fields () == 1)
3559 return is_scalar_type_recursive (t
->field (0).type ());
3560 else if (t
->code () == TYPE_CODE_UNION
)
3562 int i
, n
= t
->num_fields ();
3564 /* If all elements of the union are scalar, then the union is scalar. */
3565 for (i
= 0; i
< n
; i
++)
3566 if (!is_scalar_type_recursive (t
->field (i
).type ()))
3575 /* Return true is T is a class or a union. False otherwise. */
3578 class_or_union_p (const struct type
*t
)
3580 return (t
->code () == TYPE_CODE_STRUCT
3581 || t
->code () == TYPE_CODE_UNION
);
3584 /* A helper function which returns true if types A and B represent the
3585 "same" class type. This is true if the types have the same main
3586 type, or the same name. */
3589 class_types_same_p (const struct type
*a
, const struct type
*b
)
3591 return (TYPE_MAIN_TYPE (a
) == TYPE_MAIN_TYPE (b
)
3592 || (a
->name () && b
->name ()
3593 && !strcmp (a
->name (), b
->name ())));
3596 /* If BASE is an ancestor of DCLASS return the distance between them.
3597 otherwise return -1;
3601 class B: public A {};
3602 class C: public B {};
3605 distance_to_ancestor (A, A, 0) = 0
3606 distance_to_ancestor (A, B, 0) = 1
3607 distance_to_ancestor (A, C, 0) = 2
3608 distance_to_ancestor (A, D, 0) = 3
3610 If PUBLIC is 1 then only public ancestors are considered,
3611 and the function returns the distance only if BASE is a public ancestor
3615 distance_to_ancestor (A, D, 1) = -1. */
3618 distance_to_ancestor (struct type
*base
, struct type
*dclass
, int is_public
)
3623 base
= check_typedef (base
);
3624 dclass
= check_typedef (dclass
);
3626 if (class_types_same_p (base
, dclass
))
3629 for (i
= 0; i
< TYPE_N_BASECLASSES (dclass
); i
++)
3631 if (is_public
&& ! BASETYPE_VIA_PUBLIC (dclass
, i
))
3634 d
= distance_to_ancestor (base
, TYPE_BASECLASS (dclass
, i
), is_public
);
3642 /* Check whether BASE is an ancestor or base class or DCLASS
3643 Return 1 if so, and 0 if not.
3644 Note: If BASE and DCLASS are of the same type, this function
3645 will return 1. So for some class A, is_ancestor (A, A) will
3649 is_ancestor (struct type
*base
, struct type
*dclass
)
3651 return distance_to_ancestor (base
, dclass
, 0) >= 0;
3654 /* Like is_ancestor, but only returns true when BASE is a public
3655 ancestor of DCLASS. */
3658 is_public_ancestor (struct type
*base
, struct type
*dclass
)
3660 return distance_to_ancestor (base
, dclass
, 1) >= 0;
3663 /* A helper function for is_unique_ancestor. */
3666 is_unique_ancestor_worker (struct type
*base
, struct type
*dclass
,
3668 const gdb_byte
*valaddr
, int embedded_offset
,
3669 CORE_ADDR address
, struct value
*val
)
3673 base
= check_typedef (base
);
3674 dclass
= check_typedef (dclass
);
3676 for (i
= 0; i
< TYPE_N_BASECLASSES (dclass
) && count
< 2; ++i
)
3681 iter
= check_typedef (TYPE_BASECLASS (dclass
, i
));
3683 this_offset
= baseclass_offset (dclass
, i
, valaddr
, embedded_offset
,
3686 if (class_types_same_p (base
, iter
))
3688 /* If this is the first subclass, set *OFFSET and set count
3689 to 1. Otherwise, if this is at the same offset as
3690 previous instances, do nothing. Otherwise, increment
3694 *offset
= this_offset
;
3697 else if (this_offset
== *offset
)
3705 count
+= is_unique_ancestor_worker (base
, iter
, offset
,
3707 embedded_offset
+ this_offset
,
3714 /* Like is_ancestor, but only returns true if BASE is a unique base
3715 class of the type of VAL. */
3718 is_unique_ancestor (struct type
*base
, struct value
*val
)
3722 return is_unique_ancestor_worker (base
, value_type (val
), &offset
,
3723 value_contents_for_printing (val
),
3724 value_embedded_offset (val
),
3725 value_address (val
), val
) == 1;
3728 /* See gdbtypes.h. */
3731 type_byte_order (const struct type
*type
)
3733 bfd_endian byteorder
= gdbarch_byte_order (get_type_arch (type
));
3734 if (TYPE_ENDIANITY_NOT_DEFAULT (type
))
3736 if (byteorder
== BFD_ENDIAN_BIG
)
3737 return BFD_ENDIAN_LITTLE
;
3740 gdb_assert (byteorder
== BFD_ENDIAN_LITTLE
);
3741 return BFD_ENDIAN_BIG
;
3749 /* Overload resolution. */
3751 /* Return the sum of the rank of A with the rank of B. */
3754 sum_ranks (struct rank a
, struct rank b
)
3757 c
.rank
= a
.rank
+ b
.rank
;
3758 c
.subrank
= a
.subrank
+ b
.subrank
;
3762 /* Compare rank A and B and return:
3764 1 if a is better than b
3765 -1 if b is better than a. */
3768 compare_ranks (struct rank a
, struct rank b
)
3770 if (a
.rank
== b
.rank
)
3772 if (a
.subrank
== b
.subrank
)
3774 if (a
.subrank
< b
.subrank
)
3776 if (a
.subrank
> b
.subrank
)
3780 if (a
.rank
< b
.rank
)
3783 /* a.rank > b.rank */
3787 /* Functions for overload resolution begin here. */
3789 /* Compare two badness vectors A and B and return the result.
3790 0 => A and B are identical
3791 1 => A and B are incomparable
3792 2 => A is better than B
3793 3 => A is worse than B */
3796 compare_badness (const badness_vector
&a
, const badness_vector
&b
)
3800 short found_pos
= 0; /* any positives in c? */
3801 short found_neg
= 0; /* any negatives in c? */
3803 /* differing sizes => incomparable */
3804 if (a
.size () != b
.size ())
3807 /* Subtract b from a */
3808 for (i
= 0; i
< a
.size (); i
++)
3810 tmp
= compare_ranks (b
[i
], a
[i
]);
3820 return 1; /* incomparable */
3822 return 3; /* A > B */
3828 return 2; /* A < B */
3830 return 0; /* A == B */
3834 /* Rank a function by comparing its parameter types (PARMS), to the
3835 types of an argument list (ARGS). Return the badness vector. This
3836 has ARGS.size() + 1 entries. */
3839 rank_function (gdb::array_view
<type
*> parms
,
3840 gdb::array_view
<value
*> args
)
3842 /* add 1 for the length-match rank. */
3844 bv
.reserve (1 + args
.size ());
3846 /* First compare the lengths of the supplied lists.
3847 If there is a mismatch, set it to a high value. */
3849 /* pai/1997-06-03 FIXME: when we have debug info about default
3850 arguments and ellipsis parameter lists, we should consider those
3851 and rank the length-match more finely. */
3853 bv
.push_back ((args
.size () != parms
.size ())
3854 ? LENGTH_MISMATCH_BADNESS
3855 : EXACT_MATCH_BADNESS
);
3857 /* Now rank all the parameters of the candidate function. */
3858 size_t min_len
= std::min (parms
.size (), args
.size ());
3860 for (size_t i
= 0; i
< min_len
; i
++)
3861 bv
.push_back (rank_one_type (parms
[i
], value_type (args
[i
]),
3864 /* If more arguments than parameters, add dummy entries. */
3865 for (size_t i
= min_len
; i
< args
.size (); i
++)
3866 bv
.push_back (TOO_FEW_PARAMS_BADNESS
);
3871 /* Compare the names of two integer types, assuming that any sign
3872 qualifiers have been checked already. We do it this way because
3873 there may be an "int" in the name of one of the types. */
3876 integer_types_same_name_p (const char *first
, const char *second
)
3878 int first_p
, second_p
;
3880 /* If both are shorts, return 1; if neither is a short, keep
3882 first_p
= (strstr (first
, "short") != NULL
);
3883 second_p
= (strstr (second
, "short") != NULL
);
3884 if (first_p
&& second_p
)
3886 if (first_p
|| second_p
)
3889 /* Likewise for long. */
3890 first_p
= (strstr (first
, "long") != NULL
);
3891 second_p
= (strstr (second
, "long") != NULL
);
3892 if (first_p
&& second_p
)
3894 if (first_p
|| second_p
)
3897 /* Likewise for char. */
3898 first_p
= (strstr (first
, "char") != NULL
);
3899 second_p
= (strstr (second
, "char") != NULL
);
3900 if (first_p
&& second_p
)
3902 if (first_p
|| second_p
)
3905 /* They must both be ints. */
3909 /* Compares type A to type B. Returns true if they represent the same
3910 type, false otherwise. */
3913 types_equal (struct type
*a
, struct type
*b
)
3915 /* Identical type pointers. */
3916 /* However, this still doesn't catch all cases of same type for b
3917 and a. The reason is that builtin types are different from
3918 the same ones constructed from the object. */
3922 /* Resolve typedefs */
3923 if (a
->code () == TYPE_CODE_TYPEDEF
)
3924 a
= check_typedef (a
);
3925 if (b
->code () == TYPE_CODE_TYPEDEF
)
3926 b
= check_typedef (b
);
3928 /* If after resolving typedefs a and b are not of the same type
3929 code then they are not equal. */
3930 if (a
->code () != b
->code ())
3933 /* If a and b are both pointers types or both reference types then
3934 they are equal of the same type iff the objects they refer to are
3935 of the same type. */
3936 if (a
->code () == TYPE_CODE_PTR
3937 || a
->code () == TYPE_CODE_REF
)
3938 return types_equal (TYPE_TARGET_TYPE (a
),
3939 TYPE_TARGET_TYPE (b
));
3941 /* Well, damnit, if the names are exactly the same, I'll say they
3942 are exactly the same. This happens when we generate method
3943 stubs. The types won't point to the same address, but they
3944 really are the same. */
3946 if (a
->name () && b
->name ()
3947 && strcmp (a
->name (), b
->name ()) == 0)
3950 /* Check if identical after resolving typedefs. */
3954 /* Two function types are equal if their argument and return types
3956 if (a
->code () == TYPE_CODE_FUNC
)
3960 if (a
->num_fields () != b
->num_fields ())
3963 if (!types_equal (TYPE_TARGET_TYPE (a
), TYPE_TARGET_TYPE (b
)))
3966 for (i
= 0; i
< a
->num_fields (); ++i
)
3967 if (!types_equal (a
->field (i
).type (), b
->field (i
).type ()))
3976 /* Deep comparison of types. */
3978 /* An entry in the type-equality bcache. */
3980 struct type_equality_entry
3982 type_equality_entry (struct type
*t1
, struct type
*t2
)
3988 struct type
*type1
, *type2
;
3991 /* A helper function to compare two strings. Returns true if they are
3992 the same, false otherwise. Handles NULLs properly. */
3995 compare_maybe_null_strings (const char *s
, const char *t
)
3997 if (s
== NULL
|| t
== NULL
)
3999 return strcmp (s
, t
) == 0;
4002 /* A helper function for check_types_worklist that checks two types for
4003 "deep" equality. Returns true if the types are considered the
4004 same, false otherwise. */
4007 check_types_equal (struct type
*type1
, struct type
*type2
,
4008 std::vector
<type_equality_entry
> *worklist
)
4010 type1
= check_typedef (type1
);
4011 type2
= check_typedef (type2
);
4016 if (type1
->code () != type2
->code ()
4017 || TYPE_LENGTH (type1
) != TYPE_LENGTH (type2
)
4018 || TYPE_UNSIGNED (type1
) != TYPE_UNSIGNED (type2
)
4019 || TYPE_NOSIGN (type1
) != TYPE_NOSIGN (type2
)
4020 || TYPE_ENDIANITY_NOT_DEFAULT (type1
) != TYPE_ENDIANITY_NOT_DEFAULT (type2
)
4021 || TYPE_VARARGS (type1
) != TYPE_VARARGS (type2
)
4022 || TYPE_VECTOR (type1
) != TYPE_VECTOR (type2
)
4023 || TYPE_NOTTEXT (type1
) != TYPE_NOTTEXT (type2
)
4024 || TYPE_INSTANCE_FLAGS (type1
) != TYPE_INSTANCE_FLAGS (type2
)
4025 || type1
->num_fields () != type2
->num_fields ())
4028 if (!compare_maybe_null_strings (type1
->name (), type2
->name ()))
4030 if (!compare_maybe_null_strings (type1
->name (), type2
->name ()))
4033 if (type1
->code () == TYPE_CODE_RANGE
)
4035 if (*type1
->bounds () != *type2
->bounds ())
4042 for (i
= 0; i
< type1
->num_fields (); ++i
)
4044 const struct field
*field1
= &type1
->field (i
);
4045 const struct field
*field2
= &type2
->field (i
);
4047 if (FIELD_ARTIFICIAL (*field1
) != FIELD_ARTIFICIAL (*field2
)
4048 || FIELD_BITSIZE (*field1
) != FIELD_BITSIZE (*field2
)
4049 || FIELD_LOC_KIND (*field1
) != FIELD_LOC_KIND (*field2
))
4051 if (!compare_maybe_null_strings (FIELD_NAME (*field1
),
4052 FIELD_NAME (*field2
)))
4054 switch (FIELD_LOC_KIND (*field1
))
4056 case FIELD_LOC_KIND_BITPOS
:
4057 if (FIELD_BITPOS (*field1
) != FIELD_BITPOS (*field2
))
4060 case FIELD_LOC_KIND_ENUMVAL
:
4061 if (FIELD_ENUMVAL (*field1
) != FIELD_ENUMVAL (*field2
))
4064 case FIELD_LOC_KIND_PHYSADDR
:
4065 if (FIELD_STATIC_PHYSADDR (*field1
)
4066 != FIELD_STATIC_PHYSADDR (*field2
))
4069 case FIELD_LOC_KIND_PHYSNAME
:
4070 if (!compare_maybe_null_strings (FIELD_STATIC_PHYSNAME (*field1
),
4071 FIELD_STATIC_PHYSNAME (*field2
)))
4074 case FIELD_LOC_KIND_DWARF_BLOCK
:
4076 struct dwarf2_locexpr_baton
*block1
, *block2
;
4078 block1
= FIELD_DWARF_BLOCK (*field1
);
4079 block2
= FIELD_DWARF_BLOCK (*field2
);
4080 if (block1
->per_cu
!= block2
->per_cu
4081 || block1
->size
!= block2
->size
4082 || memcmp (block1
->data
, block2
->data
, block1
->size
) != 0)
4087 internal_error (__FILE__
, __LINE__
, _("Unsupported field kind "
4088 "%d by check_types_equal"),
4089 FIELD_LOC_KIND (*field1
));
4092 worklist
->emplace_back (field1
->type (), field2
->type ());
4096 if (TYPE_TARGET_TYPE (type1
) != NULL
)
4098 if (TYPE_TARGET_TYPE (type2
) == NULL
)
4101 worklist
->emplace_back (TYPE_TARGET_TYPE (type1
),
4102 TYPE_TARGET_TYPE (type2
));
4104 else if (TYPE_TARGET_TYPE (type2
) != NULL
)
4110 /* Check types on a worklist for equality. Returns false if any pair
4111 is not equal, true if they are all considered equal. */
4114 check_types_worklist (std::vector
<type_equality_entry
> *worklist
,
4117 while (!worklist
->empty ())
4121 struct type_equality_entry entry
= std::move (worklist
->back ());
4122 worklist
->pop_back ();
4124 /* If the type pair has already been visited, we know it is
4126 cache
->insert (&entry
, sizeof (entry
), &added
);
4130 if (!check_types_equal (entry
.type1
, entry
.type2
, worklist
))
4137 /* Return true if types TYPE1 and TYPE2 are equal, as determined by a
4138 "deep comparison". Otherwise return false. */
4141 types_deeply_equal (struct type
*type1
, struct type
*type2
)
4143 std::vector
<type_equality_entry
> worklist
;
4145 gdb_assert (type1
!= NULL
&& type2
!= NULL
);
4147 /* Early exit for the simple case. */
4151 gdb::bcache
cache (nullptr, nullptr);
4152 worklist
.emplace_back (type1
, type2
);
4153 return check_types_worklist (&worklist
, &cache
);
4156 /* Allocated status of type TYPE. Return zero if type TYPE is allocated.
4157 Otherwise return one. */
4160 type_not_allocated (const struct type
*type
)
4162 struct dynamic_prop
*prop
= TYPE_ALLOCATED_PROP (type
);
4164 return (prop
&& TYPE_DYN_PROP_KIND (prop
) == PROP_CONST
4165 && !TYPE_DYN_PROP_ADDR (prop
));
4168 /* Associated status of type TYPE. Return zero if type TYPE is associated.
4169 Otherwise return one. */
4172 type_not_associated (const struct type
*type
)
4174 struct dynamic_prop
*prop
= TYPE_ASSOCIATED_PROP (type
);
4176 return (prop
&& TYPE_DYN_PROP_KIND (prop
) == PROP_CONST
4177 && !TYPE_DYN_PROP_ADDR (prop
));
4180 /* rank_one_type helper for when PARM's type code is TYPE_CODE_PTR. */
4183 rank_one_type_parm_ptr (struct type
*parm
, struct type
*arg
, struct value
*value
)
4185 struct rank rank
= {0,0};
4187 switch (arg
->code ())
4191 /* Allowed pointer conversions are:
4192 (a) pointer to void-pointer conversion. */
4193 if (TYPE_TARGET_TYPE (parm
)->code () == TYPE_CODE_VOID
)
4194 return VOID_PTR_CONVERSION_BADNESS
;
4196 /* (b) pointer to ancestor-pointer conversion. */
4197 rank
.subrank
= distance_to_ancestor (TYPE_TARGET_TYPE (parm
),
4198 TYPE_TARGET_TYPE (arg
),
4200 if (rank
.subrank
>= 0)
4201 return sum_ranks (BASE_PTR_CONVERSION_BADNESS
, rank
);
4203 return INCOMPATIBLE_TYPE_BADNESS
;
4204 case TYPE_CODE_ARRAY
:
4206 struct type
*t1
= TYPE_TARGET_TYPE (parm
);
4207 struct type
*t2
= TYPE_TARGET_TYPE (arg
);
4209 if (types_equal (t1
, t2
))
4211 /* Make sure they are CV equal. */
4212 if (TYPE_CONST (t1
) != TYPE_CONST (t2
))
4213 rank
.subrank
|= CV_CONVERSION_CONST
;
4214 if (TYPE_VOLATILE (t1
) != TYPE_VOLATILE (t2
))
4215 rank
.subrank
|= CV_CONVERSION_VOLATILE
;
4216 if (rank
.subrank
!= 0)
4217 return sum_ranks (CV_CONVERSION_BADNESS
, rank
);
4218 return EXACT_MATCH_BADNESS
;
4220 return INCOMPATIBLE_TYPE_BADNESS
;
4222 case TYPE_CODE_FUNC
:
4223 return rank_one_type (TYPE_TARGET_TYPE (parm
), arg
, NULL
);
4225 if (value
!= NULL
&& value_type (value
)->code () == TYPE_CODE_INT
)
4227 if (value_as_long (value
) == 0)
4229 /* Null pointer conversion: allow it to be cast to a pointer.
4230 [4.10.1 of C++ standard draft n3290] */
4231 return NULL_POINTER_CONVERSION_BADNESS
;
4235 /* If type checking is disabled, allow the conversion. */
4236 if (!strict_type_checking
)
4237 return NS_INTEGER_POINTER_CONVERSION_BADNESS
;
4241 case TYPE_CODE_ENUM
:
4242 case TYPE_CODE_FLAGS
:
4243 case TYPE_CODE_CHAR
:
4244 case TYPE_CODE_RANGE
:
4245 case TYPE_CODE_BOOL
:
4247 return INCOMPATIBLE_TYPE_BADNESS
;
4251 /* rank_one_type helper for when PARM's type code is TYPE_CODE_ARRAY. */
4254 rank_one_type_parm_array (struct type
*parm
, struct type
*arg
, struct value
*value
)
4256 switch (arg
->code ())
4259 case TYPE_CODE_ARRAY
:
4260 return rank_one_type (TYPE_TARGET_TYPE (parm
),
4261 TYPE_TARGET_TYPE (arg
), NULL
);
4263 return INCOMPATIBLE_TYPE_BADNESS
;
4267 /* rank_one_type helper for when PARM's type code is TYPE_CODE_FUNC. */
4270 rank_one_type_parm_func (struct type
*parm
, struct type
*arg
, struct value
*value
)
4272 switch (arg
->code ())
4274 case TYPE_CODE_PTR
: /* funcptr -> func */
4275 return rank_one_type (parm
, TYPE_TARGET_TYPE (arg
), NULL
);
4277 return INCOMPATIBLE_TYPE_BADNESS
;
4281 /* rank_one_type helper for when PARM's type code is TYPE_CODE_INT. */
4284 rank_one_type_parm_int (struct type
*parm
, struct type
*arg
, struct value
*value
)
4286 switch (arg
->code ())
4289 if (TYPE_LENGTH (arg
) == TYPE_LENGTH (parm
))
4291 /* Deal with signed, unsigned, and plain chars and
4292 signed and unsigned ints. */
4293 if (TYPE_NOSIGN (parm
))
4295 /* This case only for character types. */
4296 if (TYPE_NOSIGN (arg
))
4297 return EXACT_MATCH_BADNESS
; /* plain char -> plain char */
4298 else /* signed/unsigned char -> plain char */
4299 return INTEGER_CONVERSION_BADNESS
;
4301 else if (TYPE_UNSIGNED (parm
))
4303 if (TYPE_UNSIGNED (arg
))
4305 /* unsigned int -> unsigned int, or
4306 unsigned long -> unsigned long */
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 /* unsigned int -> unsigned long */
4315 return INTEGER_PROMOTION_BADNESS
;
4317 /* unsigned long -> unsigned int */
4318 return INTEGER_CONVERSION_BADNESS
;
4322 if (integer_types_same_name_p (arg
->name (),
4324 && integer_types_same_name_p (parm
->name (),
4326 /* signed long -> unsigned int */
4327 return INTEGER_CONVERSION_BADNESS
;
4329 /* signed int/long -> unsigned int/long */
4330 return INTEGER_CONVERSION_BADNESS
;
4333 else if (!TYPE_NOSIGN (arg
) && !TYPE_UNSIGNED (arg
))
4335 if (integer_types_same_name_p (parm
->name (),
4337 return EXACT_MATCH_BADNESS
;
4338 else if (integer_types_same_name_p (arg
->name (),
4340 && integer_types_same_name_p (parm
->name (),
4342 return INTEGER_PROMOTION_BADNESS
;
4344 return INTEGER_CONVERSION_BADNESS
;
4347 return INTEGER_CONVERSION_BADNESS
;
4349 else if (TYPE_LENGTH (arg
) < TYPE_LENGTH (parm
))
4350 return INTEGER_PROMOTION_BADNESS
;
4352 return INTEGER_CONVERSION_BADNESS
;
4353 case TYPE_CODE_ENUM
:
4354 case TYPE_CODE_FLAGS
:
4355 case TYPE_CODE_CHAR
:
4356 case TYPE_CODE_RANGE
:
4357 case TYPE_CODE_BOOL
:
4358 if (TYPE_DECLARED_CLASS (arg
))
4359 return INCOMPATIBLE_TYPE_BADNESS
;
4360 return INTEGER_PROMOTION_BADNESS
;
4362 return INT_FLOAT_CONVERSION_BADNESS
;
4364 return NS_POINTER_CONVERSION_BADNESS
;
4366 return INCOMPATIBLE_TYPE_BADNESS
;
4370 /* rank_one_type helper for when PARM's type code is TYPE_CODE_ENUM. */
4373 rank_one_type_parm_enum (struct type
*parm
, struct type
*arg
, struct value
*value
)
4375 switch (arg
->code ())
4378 case TYPE_CODE_CHAR
:
4379 case TYPE_CODE_RANGE
:
4380 case TYPE_CODE_BOOL
:
4381 case TYPE_CODE_ENUM
:
4382 if (TYPE_DECLARED_CLASS (parm
) || TYPE_DECLARED_CLASS (arg
))
4383 return INCOMPATIBLE_TYPE_BADNESS
;
4384 return INTEGER_CONVERSION_BADNESS
;
4386 return INT_FLOAT_CONVERSION_BADNESS
;
4388 return INCOMPATIBLE_TYPE_BADNESS
;
4392 /* rank_one_type helper for when PARM's type code is TYPE_CODE_CHAR. */
4395 rank_one_type_parm_char (struct type
*parm
, struct type
*arg
, struct value
*value
)
4397 switch (arg
->code ())
4399 case TYPE_CODE_RANGE
:
4400 case TYPE_CODE_BOOL
:
4401 case TYPE_CODE_ENUM
:
4402 if (TYPE_DECLARED_CLASS (arg
))
4403 return INCOMPATIBLE_TYPE_BADNESS
;
4404 return INTEGER_CONVERSION_BADNESS
;
4406 return INT_FLOAT_CONVERSION_BADNESS
;
4408 if (TYPE_LENGTH (arg
) > TYPE_LENGTH (parm
))
4409 return INTEGER_CONVERSION_BADNESS
;
4410 else if (TYPE_LENGTH (arg
) < TYPE_LENGTH (parm
))
4411 return INTEGER_PROMOTION_BADNESS
;
4413 case TYPE_CODE_CHAR
:
4414 /* Deal with signed, unsigned, and plain chars for C++ and
4415 with int cases falling through from previous case. */
4416 if (TYPE_NOSIGN (parm
))
4418 if (TYPE_NOSIGN (arg
))
4419 return EXACT_MATCH_BADNESS
;
4421 return INTEGER_CONVERSION_BADNESS
;
4423 else if (TYPE_UNSIGNED (parm
))
4425 if (TYPE_UNSIGNED (arg
))
4426 return EXACT_MATCH_BADNESS
;
4428 return INTEGER_PROMOTION_BADNESS
;
4430 else if (!TYPE_NOSIGN (arg
) && !TYPE_UNSIGNED (arg
))
4431 return EXACT_MATCH_BADNESS
;
4433 return INTEGER_CONVERSION_BADNESS
;
4435 return INCOMPATIBLE_TYPE_BADNESS
;
4439 /* rank_one_type helper for when PARM's type code is TYPE_CODE_RANGE. */
4442 rank_one_type_parm_range (struct type
*parm
, struct type
*arg
, struct value
*value
)
4444 switch (arg
->code ())
4447 case TYPE_CODE_CHAR
:
4448 case TYPE_CODE_RANGE
:
4449 case TYPE_CODE_BOOL
:
4450 case TYPE_CODE_ENUM
:
4451 return INTEGER_CONVERSION_BADNESS
;
4453 return INT_FLOAT_CONVERSION_BADNESS
;
4455 return INCOMPATIBLE_TYPE_BADNESS
;
4459 /* rank_one_type helper for when PARM's type code is TYPE_CODE_BOOL. */
4462 rank_one_type_parm_bool (struct type
*parm
, struct type
*arg
, struct value
*value
)
4464 switch (arg
->code ())
4466 /* n3290 draft, section 4.12.1 (conv.bool):
4468 "A prvalue of arithmetic, unscoped enumeration, pointer, or
4469 pointer to member type can be converted to a prvalue of type
4470 bool. A zero value, null pointer value, or null member pointer
4471 value is converted to false; any other value is converted to
4472 true. A prvalue of type std::nullptr_t can be converted to a
4473 prvalue of type bool; the resulting value is false." */
4475 case TYPE_CODE_CHAR
:
4476 case TYPE_CODE_ENUM
:
4478 case TYPE_CODE_MEMBERPTR
:
4480 return BOOL_CONVERSION_BADNESS
;
4481 case TYPE_CODE_RANGE
:
4482 return INCOMPATIBLE_TYPE_BADNESS
;
4483 case TYPE_CODE_BOOL
:
4484 return EXACT_MATCH_BADNESS
;
4486 return INCOMPATIBLE_TYPE_BADNESS
;
4490 /* rank_one_type helper for when PARM's type code is TYPE_CODE_FLOAT. */
4493 rank_one_type_parm_float (struct type
*parm
, struct type
*arg
, struct value
*value
)
4495 switch (arg
->code ())
4498 if (TYPE_LENGTH (arg
) < TYPE_LENGTH (parm
))
4499 return FLOAT_PROMOTION_BADNESS
;
4500 else if (TYPE_LENGTH (arg
) == TYPE_LENGTH (parm
))
4501 return EXACT_MATCH_BADNESS
;
4503 return FLOAT_CONVERSION_BADNESS
;
4505 case TYPE_CODE_BOOL
:
4506 case TYPE_CODE_ENUM
:
4507 case TYPE_CODE_RANGE
:
4508 case TYPE_CODE_CHAR
:
4509 return INT_FLOAT_CONVERSION_BADNESS
;
4511 return INCOMPATIBLE_TYPE_BADNESS
;
4515 /* rank_one_type helper for when PARM's type code is TYPE_CODE_COMPLEX. */
4518 rank_one_type_parm_complex (struct type
*parm
, struct type
*arg
, struct value
*value
)
4520 switch (arg
->code ())
4521 { /* Strictly not needed for C++, but... */
4523 return FLOAT_PROMOTION_BADNESS
;
4524 case TYPE_CODE_COMPLEX
:
4525 return EXACT_MATCH_BADNESS
;
4527 return INCOMPATIBLE_TYPE_BADNESS
;
4531 /* rank_one_type helper for when PARM's type code is TYPE_CODE_STRUCT. */
4534 rank_one_type_parm_struct (struct type
*parm
, struct type
*arg
, struct value
*value
)
4536 struct rank rank
= {0, 0};
4538 switch (arg
->code ())
4540 case TYPE_CODE_STRUCT
:
4541 /* Check for derivation */
4542 rank
.subrank
= distance_to_ancestor (parm
, arg
, 0);
4543 if (rank
.subrank
>= 0)
4544 return sum_ranks (BASE_CONVERSION_BADNESS
, rank
);
4547 return INCOMPATIBLE_TYPE_BADNESS
;
4551 /* rank_one_type helper for when PARM's type code is TYPE_CODE_SET. */
4554 rank_one_type_parm_set (struct type
*parm
, struct type
*arg
, struct value
*value
)
4556 switch (arg
->code ())
4560 return rank_one_type (parm
->field (0).type (),
4561 arg
->field (0).type (), NULL
);
4563 return INCOMPATIBLE_TYPE_BADNESS
;
4567 /* Compare one type (PARM) for compatibility with another (ARG).
4568 * PARM is intended to be the parameter type of a function; and
4569 * ARG is the supplied argument's type. This function tests if
4570 * the latter can be converted to the former.
4571 * VALUE is the argument's value or NULL if none (or called recursively)
4573 * Return 0 if they are identical types;
4574 * Otherwise, return an integer which corresponds to how compatible
4575 * PARM is to ARG. The higher the return value, the worse the match.
4576 * Generally the "bad" conversions are all uniformly assigned a 100. */
4579 rank_one_type (struct type
*parm
, struct type
*arg
, struct value
*value
)
4581 struct rank rank
= {0,0};
4583 /* Resolve typedefs */
4584 if (parm
->code () == TYPE_CODE_TYPEDEF
)
4585 parm
= check_typedef (parm
);
4586 if (arg
->code () == TYPE_CODE_TYPEDEF
)
4587 arg
= check_typedef (arg
);
4589 if (TYPE_IS_REFERENCE (parm
) && value
!= NULL
)
4591 if (VALUE_LVAL (value
) == not_lval
)
4593 /* Rvalues should preferably bind to rvalue references or const
4594 lvalue references. */
4595 if (parm
->code () == TYPE_CODE_RVALUE_REF
)
4596 rank
.subrank
= REFERENCE_CONVERSION_RVALUE
;
4597 else if (TYPE_CONST (TYPE_TARGET_TYPE (parm
)))
4598 rank
.subrank
= REFERENCE_CONVERSION_CONST_LVALUE
;
4600 return INCOMPATIBLE_TYPE_BADNESS
;
4601 return sum_ranks (rank
, REFERENCE_CONVERSION_BADNESS
);
4605 /* It's illegal to pass an lvalue as an rvalue. */
4606 if (parm
->code () == TYPE_CODE_RVALUE_REF
)
4607 return INCOMPATIBLE_TYPE_BADNESS
;
4611 if (types_equal (parm
, arg
))
4613 struct type
*t1
= parm
;
4614 struct type
*t2
= arg
;
4616 /* For pointers and references, compare target type. */
4617 if (parm
->code () == TYPE_CODE_PTR
|| TYPE_IS_REFERENCE (parm
))
4619 t1
= TYPE_TARGET_TYPE (parm
);
4620 t2
= TYPE_TARGET_TYPE (arg
);
4623 /* Make sure they are CV equal, too. */
4624 if (TYPE_CONST (t1
) != TYPE_CONST (t2
))
4625 rank
.subrank
|= CV_CONVERSION_CONST
;
4626 if (TYPE_VOLATILE (t1
) != TYPE_VOLATILE (t2
))
4627 rank
.subrank
|= CV_CONVERSION_VOLATILE
;
4628 if (rank
.subrank
!= 0)
4629 return sum_ranks (CV_CONVERSION_BADNESS
, rank
);
4630 return EXACT_MATCH_BADNESS
;
4633 /* See through references, since we can almost make non-references
4636 if (TYPE_IS_REFERENCE (arg
))
4637 return (sum_ranks (rank_one_type (parm
, TYPE_TARGET_TYPE (arg
), NULL
),
4638 REFERENCE_SEE_THROUGH_BADNESS
));
4639 if (TYPE_IS_REFERENCE (parm
))
4640 return (sum_ranks (rank_one_type (TYPE_TARGET_TYPE (parm
), arg
, NULL
),
4641 REFERENCE_SEE_THROUGH_BADNESS
));
4643 /* Debugging only. */
4644 fprintf_filtered (gdb_stderr
,
4645 "------ Arg is %s [%d], parm is %s [%d]\n",
4646 arg
->name (), arg
->code (),
4647 parm
->name (), parm
->code ());
4649 /* x -> y means arg of type x being supplied for parameter of type y. */
4651 switch (parm
->code ())
4654 return rank_one_type_parm_ptr (parm
, arg
, value
);
4655 case TYPE_CODE_ARRAY
:
4656 return rank_one_type_parm_array (parm
, arg
, value
);
4657 case TYPE_CODE_FUNC
:
4658 return rank_one_type_parm_func (parm
, arg
, value
);
4660 return rank_one_type_parm_int (parm
, arg
, value
);
4661 case TYPE_CODE_ENUM
:
4662 return rank_one_type_parm_enum (parm
, arg
, value
);
4663 case TYPE_CODE_CHAR
:
4664 return rank_one_type_parm_char (parm
, arg
, value
);
4665 case TYPE_CODE_RANGE
:
4666 return rank_one_type_parm_range (parm
, arg
, value
);
4667 case TYPE_CODE_BOOL
:
4668 return rank_one_type_parm_bool (parm
, arg
, value
);
4670 return rank_one_type_parm_float (parm
, arg
, value
);
4671 case TYPE_CODE_COMPLEX
:
4672 return rank_one_type_parm_complex (parm
, arg
, value
);
4673 case TYPE_CODE_STRUCT
:
4674 return rank_one_type_parm_struct (parm
, arg
, value
);
4676 return rank_one_type_parm_set (parm
, arg
, value
);
4678 return INCOMPATIBLE_TYPE_BADNESS
;
4679 } /* switch (arg->code ()) */
4682 /* End of functions for overload resolution. */
4684 /* Routines to pretty-print types. */
4687 print_bit_vector (B_TYPE
*bits
, int nbits
)
4691 for (bitno
= 0; bitno
< nbits
; bitno
++)
4693 if ((bitno
% 8) == 0)
4695 puts_filtered (" ");
4697 if (B_TST (bits
, bitno
))
4698 printf_filtered (("1"));
4700 printf_filtered (("0"));
4704 /* Note the first arg should be the "this" pointer, we may not want to
4705 include it since we may get into a infinitely recursive
4709 print_args (struct field
*args
, int nargs
, int spaces
)
4715 for (i
= 0; i
< nargs
; i
++)
4717 printfi_filtered (spaces
, "[%d] name '%s'\n", i
,
4718 args
[i
].name
!= NULL
? args
[i
].name
: "<NULL>");
4719 recursive_dump_type (args
[i
].type (), spaces
+ 2);
4725 field_is_static (struct field
*f
)
4727 /* "static" fields are the fields whose location is not relative
4728 to the address of the enclosing struct. It would be nice to
4729 have a dedicated flag that would be set for static fields when
4730 the type is being created. But in practice, checking the field
4731 loc_kind should give us an accurate answer. */
4732 return (FIELD_LOC_KIND (*f
) == FIELD_LOC_KIND_PHYSNAME
4733 || FIELD_LOC_KIND (*f
) == FIELD_LOC_KIND_PHYSADDR
);
4737 dump_fn_fieldlists (struct type
*type
, int spaces
)
4743 printfi_filtered (spaces
, "fn_fieldlists ");
4744 gdb_print_host_address (TYPE_FN_FIELDLISTS (type
), gdb_stdout
);
4745 printf_filtered ("\n");
4746 for (method_idx
= 0; method_idx
< TYPE_NFN_FIELDS (type
); method_idx
++)
4748 f
= TYPE_FN_FIELDLIST1 (type
, method_idx
);
4749 printfi_filtered (spaces
+ 2, "[%d] name '%s' (",
4751 TYPE_FN_FIELDLIST_NAME (type
, method_idx
));
4752 gdb_print_host_address (TYPE_FN_FIELDLIST_NAME (type
, method_idx
),
4754 printf_filtered (_(") length %d\n"),
4755 TYPE_FN_FIELDLIST_LENGTH (type
, method_idx
));
4756 for (overload_idx
= 0;
4757 overload_idx
< TYPE_FN_FIELDLIST_LENGTH (type
, method_idx
);
4760 printfi_filtered (spaces
+ 4, "[%d] physname '%s' (",
4762 TYPE_FN_FIELD_PHYSNAME (f
, overload_idx
));
4763 gdb_print_host_address (TYPE_FN_FIELD_PHYSNAME (f
, overload_idx
),
4765 printf_filtered (")\n");
4766 printfi_filtered (spaces
+ 8, "type ");
4767 gdb_print_host_address (TYPE_FN_FIELD_TYPE (f
, overload_idx
),
4769 printf_filtered ("\n");
4771 recursive_dump_type (TYPE_FN_FIELD_TYPE (f
, overload_idx
),
4774 printfi_filtered (spaces
+ 8, "args ");
4775 gdb_print_host_address (TYPE_FN_FIELD_ARGS (f
, overload_idx
),
4777 printf_filtered ("\n");
4778 print_args (TYPE_FN_FIELD_ARGS (f
, overload_idx
),
4779 TYPE_FN_FIELD_TYPE (f
, overload_idx
)->num_fields (),
4781 printfi_filtered (spaces
+ 8, "fcontext ");
4782 gdb_print_host_address (TYPE_FN_FIELD_FCONTEXT (f
, overload_idx
),
4784 printf_filtered ("\n");
4786 printfi_filtered (spaces
+ 8, "is_const %d\n",
4787 TYPE_FN_FIELD_CONST (f
, overload_idx
));
4788 printfi_filtered (spaces
+ 8, "is_volatile %d\n",
4789 TYPE_FN_FIELD_VOLATILE (f
, overload_idx
));
4790 printfi_filtered (spaces
+ 8, "is_private %d\n",
4791 TYPE_FN_FIELD_PRIVATE (f
, overload_idx
));
4792 printfi_filtered (spaces
+ 8, "is_protected %d\n",
4793 TYPE_FN_FIELD_PROTECTED (f
, overload_idx
));
4794 printfi_filtered (spaces
+ 8, "is_stub %d\n",
4795 TYPE_FN_FIELD_STUB (f
, overload_idx
));
4796 printfi_filtered (spaces
+ 8, "defaulted %d\n",
4797 TYPE_FN_FIELD_DEFAULTED (f
, overload_idx
));
4798 printfi_filtered (spaces
+ 8, "is_deleted %d\n",
4799 TYPE_FN_FIELD_DELETED (f
, overload_idx
));
4800 printfi_filtered (spaces
+ 8, "voffset %u\n",
4801 TYPE_FN_FIELD_VOFFSET (f
, overload_idx
));
4807 print_cplus_stuff (struct type
*type
, int spaces
)
4809 printfi_filtered (spaces
, "vptr_fieldno %d\n", TYPE_VPTR_FIELDNO (type
));
4810 printfi_filtered (spaces
, "vptr_basetype ");
4811 gdb_print_host_address (TYPE_VPTR_BASETYPE (type
), gdb_stdout
);
4812 puts_filtered ("\n");
4813 if (TYPE_VPTR_BASETYPE (type
) != NULL
)
4814 recursive_dump_type (TYPE_VPTR_BASETYPE (type
), spaces
+ 2);
4816 printfi_filtered (spaces
, "n_baseclasses %d\n",
4817 TYPE_N_BASECLASSES (type
));
4818 printfi_filtered (spaces
, "nfn_fields %d\n",
4819 TYPE_NFN_FIELDS (type
));
4820 if (TYPE_N_BASECLASSES (type
) > 0)
4822 printfi_filtered (spaces
, "virtual_field_bits (%d bits at *",
4823 TYPE_N_BASECLASSES (type
));
4824 gdb_print_host_address (TYPE_FIELD_VIRTUAL_BITS (type
),
4826 printf_filtered (")");
4828 print_bit_vector (TYPE_FIELD_VIRTUAL_BITS (type
),
4829 TYPE_N_BASECLASSES (type
));
4830 puts_filtered ("\n");
4832 if (type
->num_fields () > 0)
4834 if (TYPE_FIELD_PRIVATE_BITS (type
) != NULL
)
4836 printfi_filtered (spaces
,
4837 "private_field_bits (%d bits at *",
4838 type
->num_fields ());
4839 gdb_print_host_address (TYPE_FIELD_PRIVATE_BITS (type
),
4841 printf_filtered (")");
4842 print_bit_vector (TYPE_FIELD_PRIVATE_BITS (type
),
4843 type
->num_fields ());
4844 puts_filtered ("\n");
4846 if (TYPE_FIELD_PROTECTED_BITS (type
) != NULL
)
4848 printfi_filtered (spaces
,
4849 "protected_field_bits (%d bits at *",
4850 type
->num_fields ());
4851 gdb_print_host_address (TYPE_FIELD_PROTECTED_BITS (type
),
4853 printf_filtered (")");
4854 print_bit_vector (TYPE_FIELD_PROTECTED_BITS (type
),
4855 type
->num_fields ());
4856 puts_filtered ("\n");
4859 if (TYPE_NFN_FIELDS (type
) > 0)
4861 dump_fn_fieldlists (type
, spaces
);
4864 printfi_filtered (spaces
, "calling_convention %d\n",
4865 TYPE_CPLUS_CALLING_CONVENTION (type
));
4868 /* Print the contents of the TYPE's type_specific union, assuming that
4869 its type-specific kind is TYPE_SPECIFIC_GNAT_STUFF. */
4872 print_gnat_stuff (struct type
*type
, int spaces
)
4874 struct type
*descriptive_type
= TYPE_DESCRIPTIVE_TYPE (type
);
4876 if (descriptive_type
== NULL
)
4877 printfi_filtered (spaces
+ 2, "no descriptive type\n");
4880 printfi_filtered (spaces
+ 2, "descriptive type\n");
4881 recursive_dump_type (descriptive_type
, spaces
+ 4);
4885 static struct obstack dont_print_type_obstack
;
4888 recursive_dump_type (struct type
*type
, int spaces
)
4893 obstack_begin (&dont_print_type_obstack
, 0);
4895 if (type
->num_fields () > 0
4896 || (HAVE_CPLUS_STRUCT (type
) && TYPE_NFN_FIELDS (type
) > 0))
4898 struct type
**first_dont_print
4899 = (struct type
**) obstack_base (&dont_print_type_obstack
);
4901 int i
= (struct type
**)
4902 obstack_next_free (&dont_print_type_obstack
) - first_dont_print
;
4906 if (type
== first_dont_print
[i
])
4908 printfi_filtered (spaces
, "type node ");
4909 gdb_print_host_address (type
, gdb_stdout
);
4910 printf_filtered (_(" <same as already seen type>\n"));
4915 obstack_ptr_grow (&dont_print_type_obstack
, type
);
4918 printfi_filtered (spaces
, "type node ");
4919 gdb_print_host_address (type
, gdb_stdout
);
4920 printf_filtered ("\n");
4921 printfi_filtered (spaces
, "name '%s' (",
4922 type
->name () ? type
->name () : "<NULL>");
4923 gdb_print_host_address (type
->name (), gdb_stdout
);
4924 printf_filtered (")\n");
4925 printfi_filtered (spaces
, "code 0x%x ", type
->code ());
4926 switch (type
->code ())
4928 case TYPE_CODE_UNDEF
:
4929 printf_filtered ("(TYPE_CODE_UNDEF)");
4932 printf_filtered ("(TYPE_CODE_PTR)");
4934 case TYPE_CODE_ARRAY
:
4935 printf_filtered ("(TYPE_CODE_ARRAY)");
4937 case TYPE_CODE_STRUCT
:
4938 printf_filtered ("(TYPE_CODE_STRUCT)");
4940 case TYPE_CODE_UNION
:
4941 printf_filtered ("(TYPE_CODE_UNION)");
4943 case TYPE_CODE_ENUM
:
4944 printf_filtered ("(TYPE_CODE_ENUM)");
4946 case TYPE_CODE_FLAGS
:
4947 printf_filtered ("(TYPE_CODE_FLAGS)");
4949 case TYPE_CODE_FUNC
:
4950 printf_filtered ("(TYPE_CODE_FUNC)");
4953 printf_filtered ("(TYPE_CODE_INT)");
4956 printf_filtered ("(TYPE_CODE_FLT)");
4958 case TYPE_CODE_VOID
:
4959 printf_filtered ("(TYPE_CODE_VOID)");
4962 printf_filtered ("(TYPE_CODE_SET)");
4964 case TYPE_CODE_RANGE
:
4965 printf_filtered ("(TYPE_CODE_RANGE)");
4967 case TYPE_CODE_STRING
:
4968 printf_filtered ("(TYPE_CODE_STRING)");
4970 case TYPE_CODE_ERROR
:
4971 printf_filtered ("(TYPE_CODE_ERROR)");
4973 case TYPE_CODE_MEMBERPTR
:
4974 printf_filtered ("(TYPE_CODE_MEMBERPTR)");
4976 case TYPE_CODE_METHODPTR
:
4977 printf_filtered ("(TYPE_CODE_METHODPTR)");
4979 case TYPE_CODE_METHOD
:
4980 printf_filtered ("(TYPE_CODE_METHOD)");
4983 printf_filtered ("(TYPE_CODE_REF)");
4985 case TYPE_CODE_CHAR
:
4986 printf_filtered ("(TYPE_CODE_CHAR)");
4988 case TYPE_CODE_BOOL
:
4989 printf_filtered ("(TYPE_CODE_BOOL)");
4991 case TYPE_CODE_COMPLEX
:
4992 printf_filtered ("(TYPE_CODE_COMPLEX)");
4994 case TYPE_CODE_TYPEDEF
:
4995 printf_filtered ("(TYPE_CODE_TYPEDEF)");
4997 case TYPE_CODE_NAMESPACE
:
4998 printf_filtered ("(TYPE_CODE_NAMESPACE)");
5001 printf_filtered ("(UNKNOWN TYPE CODE)");
5004 puts_filtered ("\n");
5005 printfi_filtered (spaces
, "length %s\n", pulongest (TYPE_LENGTH (type
)));
5006 if (TYPE_OBJFILE_OWNED (type
))
5008 printfi_filtered (spaces
, "objfile ");
5009 gdb_print_host_address (TYPE_OWNER (type
).objfile
, gdb_stdout
);
5013 printfi_filtered (spaces
, "gdbarch ");
5014 gdb_print_host_address (TYPE_OWNER (type
).gdbarch
, gdb_stdout
);
5016 printf_filtered ("\n");
5017 printfi_filtered (spaces
, "target_type ");
5018 gdb_print_host_address (TYPE_TARGET_TYPE (type
), gdb_stdout
);
5019 printf_filtered ("\n");
5020 if (TYPE_TARGET_TYPE (type
) != NULL
)
5022 recursive_dump_type (TYPE_TARGET_TYPE (type
), spaces
+ 2);
5024 printfi_filtered (spaces
, "pointer_type ");
5025 gdb_print_host_address (TYPE_POINTER_TYPE (type
), gdb_stdout
);
5026 printf_filtered ("\n");
5027 printfi_filtered (spaces
, "reference_type ");
5028 gdb_print_host_address (TYPE_REFERENCE_TYPE (type
), gdb_stdout
);
5029 printf_filtered ("\n");
5030 printfi_filtered (spaces
, "type_chain ");
5031 gdb_print_host_address (TYPE_CHAIN (type
), gdb_stdout
);
5032 printf_filtered ("\n");
5033 printfi_filtered (spaces
, "instance_flags 0x%x",
5034 TYPE_INSTANCE_FLAGS (type
));
5035 if (TYPE_CONST (type
))
5037 puts_filtered (" TYPE_CONST");
5039 if (TYPE_VOLATILE (type
))
5041 puts_filtered (" TYPE_VOLATILE");
5043 if (TYPE_CODE_SPACE (type
))
5045 puts_filtered (" TYPE_CODE_SPACE");
5047 if (TYPE_DATA_SPACE (type
))
5049 puts_filtered (" TYPE_DATA_SPACE");
5051 if (TYPE_ADDRESS_CLASS_1 (type
))
5053 puts_filtered (" TYPE_ADDRESS_CLASS_1");
5055 if (TYPE_ADDRESS_CLASS_2 (type
))
5057 puts_filtered (" TYPE_ADDRESS_CLASS_2");
5059 if (TYPE_RESTRICT (type
))
5061 puts_filtered (" TYPE_RESTRICT");
5063 if (TYPE_ATOMIC (type
))
5065 puts_filtered (" TYPE_ATOMIC");
5067 puts_filtered ("\n");
5069 printfi_filtered (spaces
, "flags");
5070 if (TYPE_UNSIGNED (type
))
5072 puts_filtered (" TYPE_UNSIGNED");
5074 if (TYPE_NOSIGN (type
))
5076 puts_filtered (" TYPE_NOSIGN");
5078 if (TYPE_ENDIANITY_NOT_DEFAULT (type
))
5080 puts_filtered (" TYPE_ENDIANITY_NOT_DEFAULT");
5082 if (TYPE_STUB (type
))
5084 puts_filtered (" TYPE_STUB");
5086 if (TYPE_TARGET_STUB (type
))
5088 puts_filtered (" TYPE_TARGET_STUB");
5090 if (TYPE_PROTOTYPED (type
))
5092 puts_filtered (" TYPE_PROTOTYPED");
5094 if (TYPE_VARARGS (type
))
5096 puts_filtered (" TYPE_VARARGS");
5098 /* This is used for things like AltiVec registers on ppc. Gcc emits
5099 an attribute for the array type, which tells whether or not we
5100 have a vector, instead of a regular array. */
5101 if (TYPE_VECTOR (type
))
5103 puts_filtered (" TYPE_VECTOR");
5105 if (TYPE_FIXED_INSTANCE (type
))
5107 puts_filtered (" TYPE_FIXED_INSTANCE");
5109 if (TYPE_STUB_SUPPORTED (type
))
5111 puts_filtered (" TYPE_STUB_SUPPORTED");
5113 if (TYPE_NOTTEXT (type
))
5115 puts_filtered (" TYPE_NOTTEXT");
5117 puts_filtered ("\n");
5118 printfi_filtered (spaces
, "nfields %d ", type
->num_fields ());
5119 gdb_print_host_address (type
->fields (), gdb_stdout
);
5120 puts_filtered ("\n");
5121 for (idx
= 0; idx
< type
->num_fields (); idx
++)
5123 if (type
->code () == TYPE_CODE_ENUM
)
5124 printfi_filtered (spaces
+ 2,
5125 "[%d] enumval %s type ",
5126 idx
, plongest (TYPE_FIELD_ENUMVAL (type
, idx
)));
5128 printfi_filtered (spaces
+ 2,
5129 "[%d] bitpos %s bitsize %d type ",
5130 idx
, plongest (TYPE_FIELD_BITPOS (type
, idx
)),
5131 TYPE_FIELD_BITSIZE (type
, idx
));
5132 gdb_print_host_address (type
->field (idx
).type (), gdb_stdout
);
5133 printf_filtered (" name '%s' (",
5134 TYPE_FIELD_NAME (type
, idx
) != NULL
5135 ? TYPE_FIELD_NAME (type
, idx
)
5137 gdb_print_host_address (TYPE_FIELD_NAME (type
, idx
), gdb_stdout
);
5138 printf_filtered (")\n");
5139 if (type
->field (idx
).type () != NULL
)
5141 recursive_dump_type (type
->field (idx
).type (), spaces
+ 4);
5144 if (type
->code () == TYPE_CODE_RANGE
)
5146 printfi_filtered (spaces
, "low %s%s high %s%s\n",
5147 plongest (TYPE_LOW_BOUND (type
)),
5148 TYPE_LOW_BOUND_UNDEFINED (type
) ? " (undefined)" : "",
5149 plongest (TYPE_HIGH_BOUND (type
)),
5150 TYPE_HIGH_BOUND_UNDEFINED (type
)
5151 ? " (undefined)" : "");
5154 switch (TYPE_SPECIFIC_FIELD (type
))
5156 case TYPE_SPECIFIC_CPLUS_STUFF
:
5157 printfi_filtered (spaces
, "cplus_stuff ");
5158 gdb_print_host_address (TYPE_CPLUS_SPECIFIC (type
),
5160 puts_filtered ("\n");
5161 print_cplus_stuff (type
, spaces
);
5164 case TYPE_SPECIFIC_GNAT_STUFF
:
5165 printfi_filtered (spaces
, "gnat_stuff ");
5166 gdb_print_host_address (TYPE_GNAT_SPECIFIC (type
), gdb_stdout
);
5167 puts_filtered ("\n");
5168 print_gnat_stuff (type
, spaces
);
5171 case TYPE_SPECIFIC_FLOATFORMAT
:
5172 printfi_filtered (spaces
, "floatformat ");
5173 if (TYPE_FLOATFORMAT (type
) == NULL
5174 || TYPE_FLOATFORMAT (type
)->name
== NULL
)
5175 puts_filtered ("(null)");
5177 puts_filtered (TYPE_FLOATFORMAT (type
)->name
);
5178 puts_filtered ("\n");
5181 case TYPE_SPECIFIC_FUNC
:
5182 printfi_filtered (spaces
, "calling_convention %d\n",
5183 TYPE_CALLING_CONVENTION (type
));
5184 /* tail_call_list is not printed. */
5187 case TYPE_SPECIFIC_SELF_TYPE
:
5188 printfi_filtered (spaces
, "self_type ");
5189 gdb_print_host_address (TYPE_SELF_TYPE (type
), gdb_stdout
);
5190 puts_filtered ("\n");
5195 obstack_free (&dont_print_type_obstack
, NULL
);
5198 /* Trivial helpers for the libiberty hash table, for mapping one
5201 struct type_pair
: public allocate_on_obstack
5203 type_pair (struct type
*old_
, struct type
*newobj_
)
5204 : old (old_
), newobj (newobj_
)
5207 struct type
* const old
, * const newobj
;
5211 type_pair_hash (const void *item
)
5213 const struct type_pair
*pair
= (const struct type_pair
*) item
;
5215 return htab_hash_pointer (pair
->old
);
5219 type_pair_eq (const void *item_lhs
, const void *item_rhs
)
5221 const struct type_pair
*lhs
= (const struct type_pair
*) item_lhs
;
5222 const struct type_pair
*rhs
= (const struct type_pair
*) item_rhs
;
5224 return lhs
->old
== rhs
->old
;
5227 /* Allocate the hash table used by copy_type_recursive to walk
5228 types without duplicates. We use OBJFILE's obstack, because
5229 OBJFILE is about to be deleted. */
5232 create_copied_types_hash (struct objfile
*objfile
)
5234 return htab_create_alloc_ex (1, type_pair_hash
, type_pair_eq
,
5235 NULL
, &objfile
->objfile_obstack
,
5236 hashtab_obstack_allocate
,
5237 dummy_obstack_deallocate
);
5240 /* Recursively copy (deep copy) a dynamic attribute list of a type. */
5242 static struct dynamic_prop_list
*
5243 copy_dynamic_prop_list (struct obstack
*objfile_obstack
,
5244 struct dynamic_prop_list
*list
)
5246 struct dynamic_prop_list
*copy
= list
;
5247 struct dynamic_prop_list
**node_ptr
= ©
;
5249 while (*node_ptr
!= NULL
)
5251 struct dynamic_prop_list
*node_copy
;
5253 node_copy
= ((struct dynamic_prop_list
*)
5254 obstack_copy (objfile_obstack
, *node_ptr
,
5255 sizeof (struct dynamic_prop_list
)));
5256 node_copy
->prop
= (*node_ptr
)->prop
;
5257 *node_ptr
= node_copy
;
5259 node_ptr
= &node_copy
->next
;
5265 /* Recursively copy (deep copy) TYPE, if it is associated with
5266 OBJFILE. Return a new type owned by the gdbarch associated with the type, a
5267 saved type if we have already visited TYPE (using COPIED_TYPES), or TYPE if
5268 it is not associated with OBJFILE. */
5271 copy_type_recursive (struct objfile
*objfile
,
5273 htab_t copied_types
)
5276 struct type
*new_type
;
5278 if (! TYPE_OBJFILE_OWNED (type
))
5281 /* This type shouldn't be pointing to any types in other objfiles;
5282 if it did, the type might disappear unexpectedly. */
5283 gdb_assert (TYPE_OBJFILE (type
) == objfile
);
5285 struct type_pair
pair (type
, nullptr);
5287 slot
= htab_find_slot (copied_types
, &pair
, INSERT
);
5289 return ((struct type_pair
*) *slot
)->newobj
;
5291 new_type
= alloc_type_arch (get_type_arch (type
));
5293 /* We must add the new type to the hash table immediately, in case
5294 we encounter this type again during a recursive call below. */
5295 struct type_pair
*stored
5296 = new (&objfile
->objfile_obstack
) struct type_pair (type
, new_type
);
5300 /* Copy the common fields of types. For the main type, we simply
5301 copy the entire thing and then update specific fields as needed. */
5302 *TYPE_MAIN_TYPE (new_type
) = *TYPE_MAIN_TYPE (type
);
5303 TYPE_OBJFILE_OWNED (new_type
) = 0;
5304 TYPE_OWNER (new_type
).gdbarch
= get_type_arch (type
);
5307 new_type
->set_name (xstrdup (type
->name ()));
5309 TYPE_INSTANCE_FLAGS (new_type
) = TYPE_INSTANCE_FLAGS (type
);
5310 TYPE_LENGTH (new_type
) = TYPE_LENGTH (type
);
5312 /* Copy the fields. */
5313 if (type
->num_fields ())
5317 nfields
= type
->num_fields ();
5318 new_type
->set_fields
5320 TYPE_ZALLOC (new_type
, nfields
* sizeof (struct field
)));
5322 for (i
= 0; i
< nfields
; i
++)
5324 TYPE_FIELD_ARTIFICIAL (new_type
, i
) =
5325 TYPE_FIELD_ARTIFICIAL (type
, i
);
5326 TYPE_FIELD_BITSIZE (new_type
, i
) = TYPE_FIELD_BITSIZE (type
, i
);
5327 if (type
->field (i
).type ())
5328 new_type
->field (i
).set_type
5329 (copy_type_recursive (objfile
, type
->field (i
).type (),
5331 if (TYPE_FIELD_NAME (type
, i
))
5332 TYPE_FIELD_NAME (new_type
, i
) =
5333 xstrdup (TYPE_FIELD_NAME (type
, i
));
5334 switch (TYPE_FIELD_LOC_KIND (type
, i
))
5336 case FIELD_LOC_KIND_BITPOS
:
5337 SET_FIELD_BITPOS (new_type
->field (i
),
5338 TYPE_FIELD_BITPOS (type
, i
));
5340 case FIELD_LOC_KIND_ENUMVAL
:
5341 SET_FIELD_ENUMVAL (new_type
->field (i
),
5342 TYPE_FIELD_ENUMVAL (type
, i
));
5344 case FIELD_LOC_KIND_PHYSADDR
:
5345 SET_FIELD_PHYSADDR (new_type
->field (i
),
5346 TYPE_FIELD_STATIC_PHYSADDR (type
, i
));
5348 case FIELD_LOC_KIND_PHYSNAME
:
5349 SET_FIELD_PHYSNAME (new_type
->field (i
),
5350 xstrdup (TYPE_FIELD_STATIC_PHYSNAME (type
,
5354 internal_error (__FILE__
, __LINE__
,
5355 _("Unexpected type field location kind: %d"),
5356 TYPE_FIELD_LOC_KIND (type
, i
));
5361 /* For range types, copy the bounds information. */
5362 if (type
->code () == TYPE_CODE_RANGE
)
5364 range_bounds
*bounds
5365 = ((struct range_bounds
*) TYPE_ALLOC
5366 (new_type
, sizeof (struct range_bounds
)));
5368 *bounds
= *type
->bounds ();
5369 new_type
->set_bounds (bounds
);
5372 if (type
->main_type
->dyn_prop_list
!= NULL
)
5373 new_type
->main_type
->dyn_prop_list
5374 = copy_dynamic_prop_list (&objfile
->objfile_obstack
,
5375 type
->main_type
->dyn_prop_list
);
5378 /* Copy pointers to other types. */
5379 if (TYPE_TARGET_TYPE (type
))
5380 TYPE_TARGET_TYPE (new_type
) =
5381 copy_type_recursive (objfile
,
5382 TYPE_TARGET_TYPE (type
),
5385 /* Maybe copy the type_specific bits.
5387 NOTE drow/2005-12-09: We do not copy the C++-specific bits like
5388 base classes and methods. There's no fundamental reason why we
5389 can't, but at the moment it is not needed. */
5391 switch (TYPE_SPECIFIC_FIELD (type
))
5393 case TYPE_SPECIFIC_NONE
:
5395 case TYPE_SPECIFIC_FUNC
:
5396 INIT_FUNC_SPECIFIC (new_type
);
5397 TYPE_CALLING_CONVENTION (new_type
) = TYPE_CALLING_CONVENTION (type
);
5398 TYPE_NO_RETURN (new_type
) = TYPE_NO_RETURN (type
);
5399 TYPE_TAIL_CALL_LIST (new_type
) = NULL
;
5401 case TYPE_SPECIFIC_FLOATFORMAT
:
5402 TYPE_FLOATFORMAT (new_type
) = TYPE_FLOATFORMAT (type
);
5404 case TYPE_SPECIFIC_CPLUS_STUFF
:
5405 INIT_CPLUS_SPECIFIC (new_type
);
5407 case TYPE_SPECIFIC_GNAT_STUFF
:
5408 INIT_GNAT_SPECIFIC (new_type
);
5410 case TYPE_SPECIFIC_SELF_TYPE
:
5411 set_type_self_type (new_type
,
5412 copy_type_recursive (objfile
, TYPE_SELF_TYPE (type
),
5416 gdb_assert_not_reached ("bad type_specific_kind");
5422 /* Make a copy of the given TYPE, except that the pointer & reference
5423 types are not preserved.
5425 This function assumes that the given type has an associated objfile.
5426 This objfile is used to allocate the new type. */
5429 copy_type (const struct type
*type
)
5431 struct type
*new_type
;
5433 gdb_assert (TYPE_OBJFILE_OWNED (type
));
5435 new_type
= alloc_type_copy (type
);
5436 TYPE_INSTANCE_FLAGS (new_type
) = TYPE_INSTANCE_FLAGS (type
);
5437 TYPE_LENGTH (new_type
) = TYPE_LENGTH (type
);
5438 memcpy (TYPE_MAIN_TYPE (new_type
), TYPE_MAIN_TYPE (type
),
5439 sizeof (struct main_type
));
5440 if (type
->main_type
->dyn_prop_list
!= NULL
)
5441 new_type
->main_type
->dyn_prop_list
5442 = copy_dynamic_prop_list (&TYPE_OBJFILE (type
) -> objfile_obstack
,
5443 type
->main_type
->dyn_prop_list
);
5448 /* Helper functions to initialize architecture-specific types. */
5450 /* Allocate a type structure associated with GDBARCH and set its
5451 CODE, LENGTH, and NAME fields. */
5454 arch_type (struct gdbarch
*gdbarch
,
5455 enum type_code code
, int bit
, const char *name
)
5459 type
= alloc_type_arch (gdbarch
);
5460 set_type_code (type
, code
);
5461 gdb_assert ((bit
% TARGET_CHAR_BIT
) == 0);
5462 TYPE_LENGTH (type
) = bit
/ TARGET_CHAR_BIT
;
5465 type
->set_name (gdbarch_obstack_strdup (gdbarch
, name
));
5470 /* Allocate a TYPE_CODE_INT type structure associated with GDBARCH.
5471 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
5472 the type's TYPE_UNSIGNED flag. NAME is the type name. */
5475 arch_integer_type (struct gdbarch
*gdbarch
,
5476 int bit
, int unsigned_p
, const char *name
)
5480 t
= arch_type (gdbarch
, TYPE_CODE_INT
, bit
, name
);
5482 TYPE_UNSIGNED (t
) = 1;
5487 /* Allocate a TYPE_CODE_CHAR type structure associated with GDBARCH.
5488 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
5489 the type's TYPE_UNSIGNED flag. NAME is the type name. */
5492 arch_character_type (struct gdbarch
*gdbarch
,
5493 int bit
, int unsigned_p
, const char *name
)
5497 t
= arch_type (gdbarch
, TYPE_CODE_CHAR
, bit
, name
);
5499 TYPE_UNSIGNED (t
) = 1;
5504 /* Allocate a TYPE_CODE_BOOL type structure associated with GDBARCH.
5505 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
5506 the type's TYPE_UNSIGNED flag. NAME is the type name. */
5509 arch_boolean_type (struct gdbarch
*gdbarch
,
5510 int bit
, int unsigned_p
, const char *name
)
5514 t
= arch_type (gdbarch
, TYPE_CODE_BOOL
, bit
, name
);
5516 TYPE_UNSIGNED (t
) = 1;
5521 /* Allocate a TYPE_CODE_FLT type structure associated with GDBARCH.
5522 BIT is the type size in bits; if BIT equals -1, the size is
5523 determined by the floatformat. NAME is the type name. Set the
5524 TYPE_FLOATFORMAT from FLOATFORMATS. */
5527 arch_float_type (struct gdbarch
*gdbarch
,
5528 int bit
, const char *name
,
5529 const struct floatformat
**floatformats
)
5531 const struct floatformat
*fmt
= floatformats
[gdbarch_byte_order (gdbarch
)];
5534 bit
= verify_floatformat (bit
, fmt
);
5535 t
= arch_type (gdbarch
, TYPE_CODE_FLT
, bit
, name
);
5536 TYPE_FLOATFORMAT (t
) = fmt
;
5541 /* Allocate a TYPE_CODE_DECFLOAT type structure associated with GDBARCH.
5542 BIT is the type size in bits. NAME is the type name. */
5545 arch_decfloat_type (struct gdbarch
*gdbarch
, int bit
, const char *name
)
5549 t
= arch_type (gdbarch
, TYPE_CODE_DECFLOAT
, bit
, name
);
5553 /* Allocate a TYPE_CODE_PTR type structure associated with GDBARCH.
5554 BIT is the pointer type size in bits. NAME is the type name.
5555 TARGET_TYPE is the pointer target type. Always sets the pointer type's
5556 TYPE_UNSIGNED flag. */
5559 arch_pointer_type (struct gdbarch
*gdbarch
,
5560 int bit
, const char *name
, struct type
*target_type
)
5564 t
= arch_type (gdbarch
, TYPE_CODE_PTR
, bit
, name
);
5565 TYPE_TARGET_TYPE (t
) = target_type
;
5566 TYPE_UNSIGNED (t
) = 1;
5570 /* Allocate a TYPE_CODE_FLAGS type structure associated with GDBARCH.
5571 NAME is the type name. BIT is the size of the flag word in bits. */
5574 arch_flags_type (struct gdbarch
*gdbarch
, const char *name
, int bit
)
5578 type
= arch_type (gdbarch
, TYPE_CODE_FLAGS
, bit
, name
);
5579 TYPE_UNSIGNED (type
) = 1;
5580 type
->set_num_fields (0);
5581 /* Pre-allocate enough space assuming every field is one bit. */
5583 ((struct field
*) TYPE_ZALLOC (type
, bit
* sizeof (struct field
)));
5588 /* Add field to TYPE_CODE_FLAGS type TYPE to indicate the bit at
5589 position BITPOS is called NAME. Pass NAME as "" for fields that
5590 should not be printed. */
5593 append_flags_type_field (struct type
*type
, int start_bitpos
, int nr_bits
,
5594 struct type
*field_type
, const char *name
)
5596 int type_bitsize
= TYPE_LENGTH (type
) * TARGET_CHAR_BIT
;
5597 int field_nr
= type
->num_fields ();
5599 gdb_assert (type
->code () == TYPE_CODE_FLAGS
);
5600 gdb_assert (type
->num_fields () + 1 <= type_bitsize
);
5601 gdb_assert (start_bitpos
>= 0 && start_bitpos
< type_bitsize
);
5602 gdb_assert (nr_bits
>= 1 && nr_bits
<= type_bitsize
);
5603 gdb_assert (name
!= NULL
);
5605 TYPE_FIELD_NAME (type
, field_nr
) = xstrdup (name
);
5606 type
->field (field_nr
).set_type (field_type
);
5607 SET_FIELD_BITPOS (type
->field (field_nr
), start_bitpos
);
5608 TYPE_FIELD_BITSIZE (type
, field_nr
) = nr_bits
;
5609 type
->set_num_fields (type
->num_fields () + 1);
5612 /* Special version of append_flags_type_field to add a flag field.
5613 Add field to TYPE_CODE_FLAGS type TYPE to indicate the bit at
5614 position BITPOS is called NAME. */
5617 append_flags_type_flag (struct type
*type
, int bitpos
, const char *name
)
5619 struct gdbarch
*gdbarch
= get_type_arch (type
);
5621 append_flags_type_field (type
, bitpos
, 1,
5622 builtin_type (gdbarch
)->builtin_bool
,
5626 /* Allocate a TYPE_CODE_STRUCT or TYPE_CODE_UNION type structure (as
5627 specified by CODE) associated with GDBARCH. NAME is the type name. */
5630 arch_composite_type (struct gdbarch
*gdbarch
, const char *name
,
5631 enum type_code code
)
5635 gdb_assert (code
== TYPE_CODE_STRUCT
|| code
== TYPE_CODE_UNION
);
5636 t
= arch_type (gdbarch
, code
, 0, NULL
);
5638 INIT_CPLUS_SPECIFIC (t
);
5642 /* Add new field with name NAME and type FIELD to composite type T.
5643 Do not set the field's position or adjust the type's length;
5644 the caller should do so. Return the new field. */
5647 append_composite_type_field_raw (struct type
*t
, const char *name
,
5652 t
->set_num_fields (t
->num_fields () + 1);
5653 t
->set_fields (XRESIZEVEC (struct field
, t
->fields (),
5655 f
= &t
->field (t
->num_fields () - 1);
5656 memset (f
, 0, sizeof f
[0]);
5657 f
[0].set_type (field
);
5658 FIELD_NAME (f
[0]) = name
;
5662 /* Add new field with name NAME and type FIELD to composite type T.
5663 ALIGNMENT (if non-zero) specifies the minimum field alignment. */
5666 append_composite_type_field_aligned (struct type
*t
, const char *name
,
5667 struct type
*field
, int alignment
)
5669 struct field
*f
= append_composite_type_field_raw (t
, name
, field
);
5671 if (t
->code () == TYPE_CODE_UNION
)
5673 if (TYPE_LENGTH (t
) < TYPE_LENGTH (field
))
5674 TYPE_LENGTH (t
) = TYPE_LENGTH (field
);
5676 else if (t
->code () == TYPE_CODE_STRUCT
)
5678 TYPE_LENGTH (t
) = TYPE_LENGTH (t
) + TYPE_LENGTH (field
);
5679 if (t
->num_fields () > 1)
5681 SET_FIELD_BITPOS (f
[0],
5682 (FIELD_BITPOS (f
[-1])
5683 + (TYPE_LENGTH (f
[-1].type ())
5684 * TARGET_CHAR_BIT
)));
5690 alignment
*= TARGET_CHAR_BIT
;
5691 left
= FIELD_BITPOS (f
[0]) % alignment
;
5695 SET_FIELD_BITPOS (f
[0], FIELD_BITPOS (f
[0]) + (alignment
- left
));
5696 TYPE_LENGTH (t
) += (alignment
- left
) / TARGET_CHAR_BIT
;
5703 /* Add new field with name NAME and type FIELD to composite type T. */
5706 append_composite_type_field (struct type
*t
, const char *name
,
5709 append_composite_type_field_aligned (t
, name
, field
, 0);
5712 static struct gdbarch_data
*gdbtypes_data
;
5714 const struct builtin_type
*
5715 builtin_type (struct gdbarch
*gdbarch
)
5717 return (const struct builtin_type
*) gdbarch_data (gdbarch
, gdbtypes_data
);
5721 gdbtypes_post_init (struct gdbarch
*gdbarch
)
5723 struct builtin_type
*builtin_type
5724 = GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct builtin_type
);
5727 builtin_type
->builtin_void
5728 = arch_type (gdbarch
, TYPE_CODE_VOID
, TARGET_CHAR_BIT
, "void");
5729 builtin_type
->builtin_char
5730 = arch_integer_type (gdbarch
, TARGET_CHAR_BIT
,
5731 !gdbarch_char_signed (gdbarch
), "char");
5732 TYPE_NOSIGN (builtin_type
->builtin_char
) = 1;
5733 builtin_type
->builtin_signed_char
5734 = arch_integer_type (gdbarch
, TARGET_CHAR_BIT
,
5736 builtin_type
->builtin_unsigned_char
5737 = arch_integer_type (gdbarch
, TARGET_CHAR_BIT
,
5738 1, "unsigned char");
5739 builtin_type
->builtin_short
5740 = arch_integer_type (gdbarch
, gdbarch_short_bit (gdbarch
),
5742 builtin_type
->builtin_unsigned_short
5743 = arch_integer_type (gdbarch
, gdbarch_short_bit (gdbarch
),
5744 1, "unsigned short");
5745 builtin_type
->builtin_int
5746 = arch_integer_type (gdbarch
, gdbarch_int_bit (gdbarch
),
5748 builtin_type
->builtin_unsigned_int
5749 = arch_integer_type (gdbarch
, gdbarch_int_bit (gdbarch
),
5751 builtin_type
->builtin_long
5752 = arch_integer_type (gdbarch
, gdbarch_long_bit (gdbarch
),
5754 builtin_type
->builtin_unsigned_long
5755 = arch_integer_type (gdbarch
, gdbarch_long_bit (gdbarch
),
5756 1, "unsigned long");
5757 builtin_type
->builtin_long_long
5758 = arch_integer_type (gdbarch
, gdbarch_long_long_bit (gdbarch
),
5760 builtin_type
->builtin_unsigned_long_long
5761 = arch_integer_type (gdbarch
, gdbarch_long_long_bit (gdbarch
),
5762 1, "unsigned long long");
5763 builtin_type
->builtin_half
5764 = arch_float_type (gdbarch
, gdbarch_half_bit (gdbarch
),
5765 "half", gdbarch_half_format (gdbarch
));
5766 builtin_type
->builtin_float
5767 = arch_float_type (gdbarch
, gdbarch_float_bit (gdbarch
),
5768 "float", gdbarch_float_format (gdbarch
));
5769 builtin_type
->builtin_double
5770 = arch_float_type (gdbarch
, gdbarch_double_bit (gdbarch
),
5771 "double", gdbarch_double_format (gdbarch
));
5772 builtin_type
->builtin_long_double
5773 = arch_float_type (gdbarch
, gdbarch_long_double_bit (gdbarch
),
5774 "long double", gdbarch_long_double_format (gdbarch
));
5775 builtin_type
->builtin_complex
5776 = init_complex_type ("complex", builtin_type
->builtin_float
);
5777 builtin_type
->builtin_double_complex
5778 = init_complex_type ("double complex", builtin_type
->builtin_double
);
5779 builtin_type
->builtin_string
5780 = arch_type (gdbarch
, TYPE_CODE_STRING
, TARGET_CHAR_BIT
, "string");
5781 builtin_type
->builtin_bool
5782 = arch_type (gdbarch
, TYPE_CODE_BOOL
, TARGET_CHAR_BIT
, "bool");
5784 /* The following three are about decimal floating point types, which
5785 are 32-bits, 64-bits and 128-bits respectively. */
5786 builtin_type
->builtin_decfloat
5787 = arch_decfloat_type (gdbarch
, 32, "_Decimal32");
5788 builtin_type
->builtin_decdouble
5789 = arch_decfloat_type (gdbarch
, 64, "_Decimal64");
5790 builtin_type
->builtin_declong
5791 = arch_decfloat_type (gdbarch
, 128, "_Decimal128");
5793 /* "True" character types. */
5794 builtin_type
->builtin_true_char
5795 = arch_character_type (gdbarch
, TARGET_CHAR_BIT
, 0, "true character");
5796 builtin_type
->builtin_true_unsigned_char
5797 = arch_character_type (gdbarch
, TARGET_CHAR_BIT
, 1, "true character");
5799 /* Fixed-size integer types. */
5800 builtin_type
->builtin_int0
5801 = arch_integer_type (gdbarch
, 0, 0, "int0_t");
5802 builtin_type
->builtin_int8
5803 = arch_integer_type (gdbarch
, 8, 0, "int8_t");
5804 builtin_type
->builtin_uint8
5805 = arch_integer_type (gdbarch
, 8, 1, "uint8_t");
5806 builtin_type
->builtin_int16
5807 = arch_integer_type (gdbarch
, 16, 0, "int16_t");
5808 builtin_type
->builtin_uint16
5809 = arch_integer_type (gdbarch
, 16, 1, "uint16_t");
5810 builtin_type
->builtin_int24
5811 = arch_integer_type (gdbarch
, 24, 0, "int24_t");
5812 builtin_type
->builtin_uint24
5813 = arch_integer_type (gdbarch
, 24, 1, "uint24_t");
5814 builtin_type
->builtin_int32
5815 = arch_integer_type (gdbarch
, 32, 0, "int32_t");
5816 builtin_type
->builtin_uint32
5817 = arch_integer_type (gdbarch
, 32, 1, "uint32_t");
5818 builtin_type
->builtin_int64
5819 = arch_integer_type (gdbarch
, 64, 0, "int64_t");
5820 builtin_type
->builtin_uint64
5821 = arch_integer_type (gdbarch
, 64, 1, "uint64_t");
5822 builtin_type
->builtin_int128
5823 = arch_integer_type (gdbarch
, 128, 0, "int128_t");
5824 builtin_type
->builtin_uint128
5825 = arch_integer_type (gdbarch
, 128, 1, "uint128_t");
5826 TYPE_INSTANCE_FLAGS (builtin_type
->builtin_int8
) |=
5827 TYPE_INSTANCE_FLAG_NOTTEXT
;
5828 TYPE_INSTANCE_FLAGS (builtin_type
->builtin_uint8
) |=
5829 TYPE_INSTANCE_FLAG_NOTTEXT
;
5831 /* Wide character types. */
5832 builtin_type
->builtin_char16
5833 = arch_integer_type (gdbarch
, 16, 1, "char16_t");
5834 builtin_type
->builtin_char32
5835 = arch_integer_type (gdbarch
, 32, 1, "char32_t");
5836 builtin_type
->builtin_wchar
5837 = arch_integer_type (gdbarch
, gdbarch_wchar_bit (gdbarch
),
5838 !gdbarch_wchar_signed (gdbarch
), "wchar_t");
5840 /* Default data/code pointer types. */
5841 builtin_type
->builtin_data_ptr
5842 = lookup_pointer_type (builtin_type
->builtin_void
);
5843 builtin_type
->builtin_func_ptr
5844 = lookup_pointer_type (lookup_function_type (builtin_type
->builtin_void
));
5845 builtin_type
->builtin_func_func
5846 = lookup_function_type (builtin_type
->builtin_func_ptr
);
5848 /* This type represents a GDB internal function. */
5849 builtin_type
->internal_fn
5850 = arch_type (gdbarch
, TYPE_CODE_INTERNAL_FUNCTION
, 0,
5851 "<internal function>");
5853 /* This type represents an xmethod. */
5854 builtin_type
->xmethod
5855 = arch_type (gdbarch
, TYPE_CODE_XMETHOD
, 0, "<xmethod>");
5857 return builtin_type
;
5860 /* This set of objfile-based types is intended to be used by symbol
5861 readers as basic types. */
5863 static const struct objfile_key
<struct objfile_type
,
5864 gdb::noop_deleter
<struct objfile_type
>>
5867 const struct objfile_type
*
5868 objfile_type (struct objfile
*objfile
)
5870 struct gdbarch
*gdbarch
;
5871 struct objfile_type
*objfile_type
= objfile_type_data
.get (objfile
);
5874 return objfile_type
;
5876 objfile_type
= OBSTACK_CALLOC (&objfile
->objfile_obstack
,
5877 1, struct objfile_type
);
5879 /* Use the objfile architecture to determine basic type properties. */
5880 gdbarch
= objfile
->arch ();
5883 objfile_type
->builtin_void
5884 = init_type (objfile
, TYPE_CODE_VOID
, TARGET_CHAR_BIT
, "void");
5885 objfile_type
->builtin_char
5886 = init_integer_type (objfile
, TARGET_CHAR_BIT
,
5887 !gdbarch_char_signed (gdbarch
), "char");
5888 TYPE_NOSIGN (objfile_type
->builtin_char
) = 1;
5889 objfile_type
->builtin_signed_char
5890 = init_integer_type (objfile
, TARGET_CHAR_BIT
,
5892 objfile_type
->builtin_unsigned_char
5893 = init_integer_type (objfile
, TARGET_CHAR_BIT
,
5894 1, "unsigned char");
5895 objfile_type
->builtin_short
5896 = init_integer_type (objfile
, gdbarch_short_bit (gdbarch
),
5898 objfile_type
->builtin_unsigned_short
5899 = init_integer_type (objfile
, gdbarch_short_bit (gdbarch
),
5900 1, "unsigned short");
5901 objfile_type
->builtin_int
5902 = init_integer_type (objfile
, gdbarch_int_bit (gdbarch
),
5904 objfile_type
->builtin_unsigned_int
5905 = init_integer_type (objfile
, gdbarch_int_bit (gdbarch
),
5907 objfile_type
->builtin_long
5908 = init_integer_type (objfile
, gdbarch_long_bit (gdbarch
),
5910 objfile_type
->builtin_unsigned_long
5911 = init_integer_type (objfile
, gdbarch_long_bit (gdbarch
),
5912 1, "unsigned long");
5913 objfile_type
->builtin_long_long
5914 = init_integer_type (objfile
, gdbarch_long_long_bit (gdbarch
),
5916 objfile_type
->builtin_unsigned_long_long
5917 = init_integer_type (objfile
, gdbarch_long_long_bit (gdbarch
),
5918 1, "unsigned long long");
5919 objfile_type
->builtin_float
5920 = init_float_type (objfile
, gdbarch_float_bit (gdbarch
),
5921 "float", gdbarch_float_format (gdbarch
));
5922 objfile_type
->builtin_double
5923 = init_float_type (objfile
, gdbarch_double_bit (gdbarch
),
5924 "double", gdbarch_double_format (gdbarch
));
5925 objfile_type
->builtin_long_double
5926 = init_float_type (objfile
, gdbarch_long_double_bit (gdbarch
),
5927 "long double", gdbarch_long_double_format (gdbarch
));
5929 /* This type represents a type that was unrecognized in symbol read-in. */
5930 objfile_type
->builtin_error
5931 = init_type (objfile
, TYPE_CODE_ERROR
, 0, "<unknown type>");
5933 /* The following set of types is used for symbols with no
5934 debug information. */
5935 objfile_type
->nodebug_text_symbol
5936 = init_type (objfile
, TYPE_CODE_FUNC
, TARGET_CHAR_BIT
,
5937 "<text variable, no debug info>");
5938 objfile_type
->nodebug_text_gnu_ifunc_symbol
5939 = init_type (objfile
, TYPE_CODE_FUNC
, TARGET_CHAR_BIT
,
5940 "<text gnu-indirect-function variable, no debug info>");
5941 TYPE_GNU_IFUNC (objfile_type
->nodebug_text_gnu_ifunc_symbol
) = 1;
5942 objfile_type
->nodebug_got_plt_symbol
5943 = init_pointer_type (objfile
, gdbarch_addr_bit (gdbarch
),
5944 "<text from jump slot in .got.plt, no debug info>",
5945 objfile_type
->nodebug_text_symbol
);
5946 objfile_type
->nodebug_data_symbol
5947 = init_nodebug_var_type (objfile
, "<data variable, no debug info>");
5948 objfile_type
->nodebug_unknown_symbol
5949 = init_nodebug_var_type (objfile
, "<variable (not text or data), no debug info>");
5950 objfile_type
->nodebug_tls_symbol
5951 = init_nodebug_var_type (objfile
, "<thread local variable, no debug info>");
5953 /* NOTE: on some targets, addresses and pointers are not necessarily
5957 - gdb's `struct type' always describes the target's
5959 - gdb's `struct value' objects should always hold values in
5961 - gdb's CORE_ADDR values are addresses in the unified virtual
5962 address space that the assembler and linker work with. Thus,
5963 since target_read_memory takes a CORE_ADDR as an argument, it
5964 can access any memory on the target, even if the processor has
5965 separate code and data address spaces.
5967 In this context, objfile_type->builtin_core_addr is a bit odd:
5968 it's a target type for a value the target will never see. It's
5969 only used to hold the values of (typeless) linker symbols, which
5970 are indeed in the unified virtual address space. */
5972 objfile_type
->builtin_core_addr
5973 = init_integer_type (objfile
, gdbarch_addr_bit (gdbarch
), 1,
5976 objfile_type_data
.set (objfile
, objfile_type
);
5977 return objfile_type
;
5980 void _initialize_gdbtypes ();
5982 _initialize_gdbtypes ()
5984 gdbtypes_data
= gdbarch_data_register_post_init (gdbtypes_post_init
);
5986 add_setshow_zuinteger_cmd ("overload", no_class
, &overload_debug
,
5987 _("Set debugging of C++ overloading."),
5988 _("Show debugging of C++ overloading."),
5989 _("When enabled, ranking of the "
5990 "functions is displayed."),
5992 show_overload_debug
,
5993 &setdebuglist
, &showdebuglist
);
5995 /* Add user knob for controlling resolution of opaque types. */
5996 add_setshow_boolean_cmd ("opaque-type-resolution", class_support
,
5997 &opaque_type_resolution
,
5998 _("Set resolution of opaque struct/class/union"
5999 " types (if set before loading symbols)."),
6000 _("Show resolution of opaque struct/class/union"
6001 " types (if set before loading symbols)."),
6003 show_opaque_type_resolution
,
6004 &setlist
, &showlist
);
6006 /* Add an option to permit non-strict type checking. */
6007 add_setshow_boolean_cmd ("type", class_support
,
6008 &strict_type_checking
,
6009 _("Set strict type checking."),
6010 _("Show strict type checking."),
6012 show_strict_type_checking
,
6013 &setchecklist
, &showchecklist
);