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 TYPE_FIELD_TYPE (fn
, i
) = 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
));
938 TYPE_RANGE_DATA (result_type
) = (struct range_bounds
*)
939 TYPE_ZALLOC (result_type
, sizeof (struct range_bounds
));
940 TYPE_RANGE_DATA (result_type
)->low
= *low_bound
;
941 TYPE_RANGE_DATA (result_type
)->high
= *high_bound
;
942 TYPE_RANGE_DATA (result_type
)->bias
= bias
;
944 /* Initialize the stride to be a constant, the value will already be zero
945 thanks to the use of TYPE_ZALLOC above. */
946 TYPE_RANGE_DATA (result_type
)->stride
.kind
= PROP_CONST
;
948 if (low_bound
->kind
== PROP_CONST
&& low_bound
->data
.const_val
>= 0)
949 TYPE_UNSIGNED (result_type
) = 1;
951 /* Ada allows the declaration of range types whose upper bound is
952 less than the lower bound, so checking the lower bound is not
953 enough. Make sure we do not mark a range type whose upper bound
954 is negative as unsigned. */
955 if (high_bound
->kind
== PROP_CONST
&& high_bound
->data
.const_val
< 0)
956 TYPE_UNSIGNED (result_type
) = 0;
958 TYPE_ENDIANITY_NOT_DEFAULT (result_type
)
959 = TYPE_ENDIANITY_NOT_DEFAULT (index_type
);
964 /* See gdbtypes.h. */
967 create_range_type_with_stride (struct type
*result_type
,
968 struct type
*index_type
,
969 const struct dynamic_prop
*low_bound
,
970 const struct dynamic_prop
*high_bound
,
972 const struct dynamic_prop
*stride
,
975 result_type
= create_range_type (result_type
, index_type
, low_bound
,
978 gdb_assert (stride
!= nullptr);
979 TYPE_RANGE_DATA (result_type
)->stride
= *stride
;
980 TYPE_RANGE_DATA (result_type
)->flag_is_byte_stride
= byte_stride_p
;
987 /* Create a range type using either a blank type supplied in
988 RESULT_TYPE, or creating a new type, inheriting the objfile from
991 Indices will be of type INDEX_TYPE, and will range from LOW_BOUND
992 to HIGH_BOUND, inclusive.
994 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
995 sure it is TYPE_CODE_UNDEF before we bash it into a range type? */
998 create_static_range_type (struct type
*result_type
, struct type
*index_type
,
999 LONGEST low_bound
, LONGEST high_bound
)
1001 struct dynamic_prop low
, high
;
1003 low
.kind
= PROP_CONST
;
1004 low
.data
.const_val
= low_bound
;
1006 high
.kind
= PROP_CONST
;
1007 high
.data
.const_val
= high_bound
;
1009 result_type
= create_range_type (result_type
, index_type
, &low
, &high
, 0);
1014 /* Predicate tests whether BOUNDS are static. Returns 1 if all bounds values
1015 are static, otherwise returns 0. */
1018 has_static_range (const struct range_bounds
*bounds
)
1020 /* If the range doesn't have a defined stride then its stride field will
1021 be initialized to the constant 0. */
1022 return (bounds
->low
.kind
== PROP_CONST
1023 && bounds
->high
.kind
== PROP_CONST
1024 && bounds
->stride
.kind
== PROP_CONST
);
1028 /* Set *LOWP and *HIGHP to the lower and upper bounds of discrete type
1029 TYPE. Return 1 if type is a range type, 0 if it is discrete (and
1030 bounds will fit in LONGEST), or -1 otherwise. */
1033 get_discrete_bounds (struct type
*type
, LONGEST
*lowp
, LONGEST
*highp
)
1035 type
= check_typedef (type
);
1036 switch (type
->code ())
1038 case TYPE_CODE_RANGE
:
1039 *lowp
= TYPE_LOW_BOUND (type
);
1040 *highp
= TYPE_HIGH_BOUND (type
);
1042 case TYPE_CODE_ENUM
:
1043 if (type
->num_fields () > 0)
1045 /* The enums may not be sorted by value, so search all
1049 *lowp
= *highp
= TYPE_FIELD_ENUMVAL (type
, 0);
1050 for (i
= 0; i
< type
->num_fields (); i
++)
1052 if (TYPE_FIELD_ENUMVAL (type
, i
) < *lowp
)
1053 *lowp
= TYPE_FIELD_ENUMVAL (type
, i
);
1054 if (TYPE_FIELD_ENUMVAL (type
, i
) > *highp
)
1055 *highp
= TYPE_FIELD_ENUMVAL (type
, i
);
1058 /* Set unsigned indicator if warranted. */
1061 TYPE_UNSIGNED (type
) = 1;
1070 case TYPE_CODE_BOOL
:
1075 if (TYPE_LENGTH (type
) > sizeof (LONGEST
)) /* Too big */
1077 if (!TYPE_UNSIGNED (type
))
1079 *lowp
= -(1 << (TYPE_LENGTH (type
) * TARGET_CHAR_BIT
- 1));
1080 *highp
= -*lowp
- 1;
1084 case TYPE_CODE_CHAR
:
1086 /* This round-about calculation is to avoid shifting by
1087 TYPE_LENGTH (type) * TARGET_CHAR_BIT, which will not work
1088 if TYPE_LENGTH (type) == sizeof (LONGEST). */
1089 *highp
= 1 << (TYPE_LENGTH (type
) * TARGET_CHAR_BIT
- 1);
1090 *highp
= (*highp
- 1) | *highp
;
1097 /* Assuming TYPE is a simple, non-empty array type, compute its upper
1098 and lower bound. Save the low bound into LOW_BOUND if not NULL.
1099 Save the high bound into HIGH_BOUND if not NULL.
1101 Return 1 if the operation was successful. Return zero otherwise,
1102 in which case the values of LOW_BOUND and HIGH_BOUNDS are unmodified.
1104 We now simply use get_discrete_bounds call to get the values
1105 of the low and high bounds.
1106 get_discrete_bounds can return three values:
1107 1, meaning that index is a range,
1108 0, meaning that index is a discrete type,
1109 or -1 for failure. */
1112 get_array_bounds (struct type
*type
, LONGEST
*low_bound
, LONGEST
*high_bound
)
1114 struct type
*index
= TYPE_INDEX_TYPE (type
);
1122 res
= get_discrete_bounds (index
, &low
, &high
);
1126 /* Check if the array bounds are undefined. */
1128 && ((low_bound
&& TYPE_ARRAY_LOWER_BOUND_IS_UNDEFINED (type
))
1129 || (high_bound
&& TYPE_ARRAY_UPPER_BOUND_IS_UNDEFINED (type
))))
1141 /* Assuming that TYPE is a discrete type and VAL is a valid integer
1142 representation of a value of this type, save the corresponding
1143 position number in POS.
1145 Its differs from VAL only in the case of enumeration types. In
1146 this case, the position number of the value of the first listed
1147 enumeration literal is zero; the position number of the value of
1148 each subsequent enumeration literal is one more than that of its
1149 predecessor in the list.
1151 Return 1 if the operation was successful. Return zero otherwise,
1152 in which case the value of POS is unmodified.
1156 discrete_position (struct type
*type
, LONGEST val
, LONGEST
*pos
)
1158 if (type
->code () == TYPE_CODE_RANGE
)
1159 type
= TYPE_TARGET_TYPE (type
);
1161 if (type
->code () == TYPE_CODE_ENUM
)
1165 for (i
= 0; i
< type
->num_fields (); i
+= 1)
1167 if (val
== TYPE_FIELD_ENUMVAL (type
, i
))
1173 /* Invalid enumeration value. */
1183 /* If the array TYPE has static bounds calculate and update its
1184 size, then return true. Otherwise return false and leave TYPE
1188 update_static_array_size (struct type
*type
)
1190 gdb_assert (type
->code () == TYPE_CODE_ARRAY
);
1192 struct type
*range_type
= TYPE_INDEX_TYPE (type
);
1194 if (type
->dyn_prop (DYN_PROP_BYTE_STRIDE
) == nullptr
1195 && has_static_range (TYPE_RANGE_DATA (range_type
))
1196 && (!type_not_associated (type
)
1197 && !type_not_allocated (type
)))
1199 LONGEST low_bound
, high_bound
;
1201 struct type
*element_type
;
1203 /* If the array itself doesn't provide a stride value then take
1204 whatever stride the range provides. Don't update BIT_STRIDE as
1205 we don't want to place the stride value from the range into this
1206 arrays bit size field. */
1207 stride
= TYPE_FIELD_BITSIZE (type
, 0);
1209 stride
= TYPE_BIT_STRIDE (range_type
);
1211 if (get_discrete_bounds (range_type
, &low_bound
, &high_bound
) < 0)
1212 low_bound
= high_bound
= 0;
1213 element_type
= check_typedef (TYPE_TARGET_TYPE (type
));
1214 /* Be careful when setting the array length. Ada arrays can be
1215 empty arrays with the high_bound being smaller than the low_bound.
1216 In such cases, the array length should be zero. */
1217 if (high_bound
< low_bound
)
1218 TYPE_LENGTH (type
) = 0;
1219 else if (stride
!= 0)
1221 /* Ensure that the type length is always positive, even in the
1222 case where (for example in Fortran) we have a negative
1223 stride. It is possible to have a single element array with a
1224 negative stride in Fortran (this doesn't mean anything
1225 special, it's still just a single element array) so do
1226 consider that case when touching this code. */
1227 LONGEST element_count
= std::abs (high_bound
- low_bound
+ 1);
1229 = ((std::abs (stride
) * element_count
) + 7) / 8;
1232 TYPE_LENGTH (type
) =
1233 TYPE_LENGTH (element_type
) * (high_bound
- low_bound
+ 1);
1241 /* Create an array type using either a blank type supplied in
1242 RESULT_TYPE, or creating a new type, inheriting the objfile from
1245 Elements will be of type ELEMENT_TYPE, the indices will be of type
1248 BYTE_STRIDE_PROP, when not NULL, provides the array's byte stride.
1249 This byte stride property is added to the resulting array type
1250 as a DYN_PROP_BYTE_STRIDE. As a consequence, the BYTE_STRIDE_PROP
1251 argument can only be used to create types that are objfile-owned
1252 (see add_dyn_prop), meaning that either this function must be called
1253 with an objfile-owned RESULT_TYPE, or an objfile-owned RANGE_TYPE.
1255 BIT_STRIDE is taken into account only when BYTE_STRIDE_PROP is NULL.
1256 If BIT_STRIDE is not zero, build a packed array type whose element
1257 size is BIT_STRIDE. Otherwise, ignore this parameter.
1259 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
1260 sure it is TYPE_CODE_UNDEF before we bash it into an array
1264 create_array_type_with_stride (struct type
*result_type
,
1265 struct type
*element_type
,
1266 struct type
*range_type
,
1267 struct dynamic_prop
*byte_stride_prop
,
1268 unsigned int bit_stride
)
1270 if (byte_stride_prop
!= NULL
1271 && byte_stride_prop
->kind
== PROP_CONST
)
1273 /* The byte stride is actually not dynamic. Pretend we were
1274 called with bit_stride set instead of byte_stride_prop.
1275 This will give us the same result type, while avoiding
1276 the need to handle this as a special case. */
1277 bit_stride
= byte_stride_prop
->data
.const_val
* 8;
1278 byte_stride_prop
= NULL
;
1281 if (result_type
== NULL
)
1282 result_type
= alloc_type_copy (range_type
);
1284 result_type
->set_code (TYPE_CODE_ARRAY
);
1285 TYPE_TARGET_TYPE (result_type
) = element_type
;
1287 result_type
->set_num_fields (1);
1288 result_type
->set_fields
1289 ((struct field
*) TYPE_ZALLOC (result_type
, sizeof (struct field
)));
1290 TYPE_INDEX_TYPE (result_type
) = range_type
;
1291 if (byte_stride_prop
!= NULL
)
1292 result_type
->add_dyn_prop (DYN_PROP_BYTE_STRIDE
, *byte_stride_prop
);
1293 else if (bit_stride
> 0)
1294 TYPE_FIELD_BITSIZE (result_type
, 0) = bit_stride
;
1296 if (!update_static_array_size (result_type
))
1298 /* This type is dynamic and its length needs to be computed
1299 on demand. In the meantime, avoid leaving the TYPE_LENGTH
1300 undefined by setting it to zero. Although we are not expected
1301 to trust TYPE_LENGTH in this case, setting the size to zero
1302 allows us to avoid allocating objects of random sizes in case
1303 we accidently do. */
1304 TYPE_LENGTH (result_type
) = 0;
1307 /* TYPE_TARGET_STUB will take care of zero length arrays. */
1308 if (TYPE_LENGTH (result_type
) == 0)
1309 TYPE_TARGET_STUB (result_type
) = 1;
1314 /* Same as create_array_type_with_stride but with no bit_stride
1315 (BIT_STRIDE = 0), thus building an unpacked array. */
1318 create_array_type (struct type
*result_type
,
1319 struct type
*element_type
,
1320 struct type
*range_type
)
1322 return create_array_type_with_stride (result_type
, element_type
,
1323 range_type
, NULL
, 0);
1327 lookup_array_range_type (struct type
*element_type
,
1328 LONGEST low_bound
, LONGEST high_bound
)
1330 struct type
*index_type
;
1331 struct type
*range_type
;
1333 if (TYPE_OBJFILE_OWNED (element_type
))
1334 index_type
= objfile_type (TYPE_OWNER (element_type
).objfile
)->builtin_int
;
1336 index_type
= builtin_type (get_type_arch (element_type
))->builtin_int
;
1337 range_type
= create_static_range_type (NULL
, index_type
,
1338 low_bound
, high_bound
);
1340 return create_array_type (NULL
, element_type
, range_type
);
1343 /* Create a string type using either a blank type supplied in
1344 RESULT_TYPE, or creating a new type. String types are similar
1345 enough to array of char types that we can use create_array_type to
1346 build the basic type and then bash it into a string type.
1348 For fixed length strings, the range type contains 0 as the lower
1349 bound and the length of the string minus one as the upper bound.
1351 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
1352 sure it is TYPE_CODE_UNDEF before we bash it into a string
1356 create_string_type (struct type
*result_type
,
1357 struct type
*string_char_type
,
1358 struct type
*range_type
)
1360 result_type
= create_array_type (result_type
,
1363 result_type
->set_code (TYPE_CODE_STRING
);
1368 lookup_string_range_type (struct type
*string_char_type
,
1369 LONGEST low_bound
, LONGEST high_bound
)
1371 struct type
*result_type
;
1373 result_type
= lookup_array_range_type (string_char_type
,
1374 low_bound
, high_bound
);
1375 result_type
->set_code (TYPE_CODE_STRING
);
1380 create_set_type (struct type
*result_type
, struct type
*domain_type
)
1382 if (result_type
== NULL
)
1383 result_type
= alloc_type_copy (domain_type
);
1385 result_type
->set_code (TYPE_CODE_SET
);
1386 result_type
->set_num_fields (1);
1387 result_type
->set_fields
1388 ((struct field
*) TYPE_ZALLOC (result_type
, sizeof (struct field
)));
1390 if (!TYPE_STUB (domain_type
))
1392 LONGEST low_bound
, high_bound
, bit_length
;
1394 if (get_discrete_bounds (domain_type
, &low_bound
, &high_bound
) < 0)
1395 low_bound
= high_bound
= 0;
1396 bit_length
= high_bound
- low_bound
+ 1;
1397 TYPE_LENGTH (result_type
)
1398 = (bit_length
+ TARGET_CHAR_BIT
- 1) / TARGET_CHAR_BIT
;
1400 TYPE_UNSIGNED (result_type
) = 1;
1402 TYPE_FIELD_TYPE (result_type
, 0) = domain_type
;
1407 /* Convert ARRAY_TYPE to a vector type. This may modify ARRAY_TYPE
1408 and any array types nested inside it. */
1411 make_vector_type (struct type
*array_type
)
1413 struct type
*inner_array
, *elt_type
;
1416 /* Find the innermost array type, in case the array is
1417 multi-dimensional. */
1418 inner_array
= array_type
;
1419 while (TYPE_TARGET_TYPE (inner_array
)->code () == TYPE_CODE_ARRAY
)
1420 inner_array
= TYPE_TARGET_TYPE (inner_array
);
1422 elt_type
= TYPE_TARGET_TYPE (inner_array
);
1423 if (elt_type
->code () == TYPE_CODE_INT
)
1425 flags
= TYPE_INSTANCE_FLAGS (elt_type
) | TYPE_INSTANCE_FLAG_NOTTEXT
;
1426 elt_type
= make_qualified_type (elt_type
, flags
, NULL
);
1427 TYPE_TARGET_TYPE (inner_array
) = elt_type
;
1430 TYPE_VECTOR (array_type
) = 1;
1434 init_vector_type (struct type
*elt_type
, int n
)
1436 struct type
*array_type
;
1438 array_type
= lookup_array_range_type (elt_type
, 0, n
- 1);
1439 make_vector_type (array_type
);
1443 /* Internal routine called by TYPE_SELF_TYPE to return the type that TYPE
1444 belongs to. In c++ this is the class of "this", but TYPE_THIS_TYPE is too
1445 confusing. "self" is a common enough replacement for "this".
1446 TYPE must be one of TYPE_CODE_METHODPTR, TYPE_CODE_MEMBERPTR, or
1447 TYPE_CODE_METHOD. */
1450 internal_type_self_type (struct type
*type
)
1452 switch (type
->code ())
1454 case TYPE_CODE_METHODPTR
:
1455 case TYPE_CODE_MEMBERPTR
:
1456 if (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_NONE
)
1458 gdb_assert (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_SELF_TYPE
);
1459 return TYPE_MAIN_TYPE (type
)->type_specific
.self_type
;
1460 case TYPE_CODE_METHOD
:
1461 if (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_NONE
)
1463 gdb_assert (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_FUNC
);
1464 return TYPE_MAIN_TYPE (type
)->type_specific
.func_stuff
->self_type
;
1466 gdb_assert_not_reached ("bad type");
1470 /* Set the type of the class that TYPE belongs to.
1471 In c++ this is the class of "this".
1472 TYPE must be one of TYPE_CODE_METHODPTR, TYPE_CODE_MEMBERPTR, or
1473 TYPE_CODE_METHOD. */
1476 set_type_self_type (struct type
*type
, struct type
*self_type
)
1478 switch (type
->code ())
1480 case TYPE_CODE_METHODPTR
:
1481 case TYPE_CODE_MEMBERPTR
:
1482 if (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_NONE
)
1483 TYPE_SPECIFIC_FIELD (type
) = TYPE_SPECIFIC_SELF_TYPE
;
1484 gdb_assert (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_SELF_TYPE
);
1485 TYPE_MAIN_TYPE (type
)->type_specific
.self_type
= self_type
;
1487 case TYPE_CODE_METHOD
:
1488 if (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_NONE
)
1489 INIT_FUNC_SPECIFIC (type
);
1490 gdb_assert (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_FUNC
);
1491 TYPE_MAIN_TYPE (type
)->type_specific
.func_stuff
->self_type
= self_type
;
1494 gdb_assert_not_reached ("bad type");
1498 /* Smash TYPE to be a type of pointers to members of SELF_TYPE with type
1499 TO_TYPE. A member pointer is a wierd thing -- it amounts to a
1500 typed offset into a struct, e.g. "an int at offset 8". A MEMBER
1501 TYPE doesn't include the offset (that's the value of the MEMBER
1502 itself), but does include the structure type into which it points
1505 When "smashing" the type, we preserve the objfile that the old type
1506 pointed to, since we aren't changing where the type is actually
1510 smash_to_memberptr_type (struct type
*type
, struct type
*self_type
,
1511 struct type
*to_type
)
1514 type
->set_code (TYPE_CODE_MEMBERPTR
);
1515 TYPE_TARGET_TYPE (type
) = to_type
;
1516 set_type_self_type (type
, self_type
);
1517 /* Assume that a data member pointer is the same size as a normal
1520 = gdbarch_ptr_bit (get_type_arch (to_type
)) / TARGET_CHAR_BIT
;
1523 /* Smash TYPE to be a type of pointer to methods type TO_TYPE.
1525 When "smashing" the type, we preserve the objfile that the old type
1526 pointed to, since we aren't changing where the type is actually
1530 smash_to_methodptr_type (struct type
*type
, struct type
*to_type
)
1533 type
->set_code (TYPE_CODE_METHODPTR
);
1534 TYPE_TARGET_TYPE (type
) = to_type
;
1535 set_type_self_type (type
, TYPE_SELF_TYPE (to_type
));
1536 TYPE_LENGTH (type
) = cplus_method_ptr_size (to_type
);
1539 /* Smash TYPE to be a type of method of SELF_TYPE with type TO_TYPE.
1540 METHOD just means `function that gets an extra "this" argument'.
1542 When "smashing" the type, we preserve the objfile that the old type
1543 pointed to, since we aren't changing where the type is actually
1547 smash_to_method_type (struct type
*type
, struct type
*self_type
,
1548 struct type
*to_type
, struct field
*args
,
1549 int nargs
, int varargs
)
1552 type
->set_code (TYPE_CODE_METHOD
);
1553 TYPE_TARGET_TYPE (type
) = to_type
;
1554 set_type_self_type (type
, self_type
);
1555 type
->set_fields (args
);
1556 type
->set_num_fields (nargs
);
1558 TYPE_VARARGS (type
) = 1;
1559 TYPE_LENGTH (type
) = 1; /* In practice, this is never needed. */
1562 /* A wrapper of TYPE_NAME which calls error if the type is anonymous.
1563 Since GCC PR debug/47510 DWARF provides associated information to detect the
1564 anonymous class linkage name from its typedef.
1566 Parameter TYPE should not yet have CHECK_TYPEDEF applied, this function will
1570 type_name_or_error (struct type
*type
)
1572 struct type
*saved_type
= type
;
1574 struct objfile
*objfile
;
1576 type
= check_typedef (type
);
1578 name
= type
->name ();
1582 name
= saved_type
->name ();
1583 objfile
= TYPE_OBJFILE (saved_type
);
1584 error (_("Invalid anonymous type %s [in module %s], GCC PR debug/47510 bug?"),
1585 name
? name
: "<anonymous>",
1586 objfile
? objfile_name (objfile
) : "<arch>");
1589 /* Lookup a typedef or primitive type named NAME, visible in lexical
1590 block BLOCK. If NOERR is nonzero, return zero if NAME is not
1591 suitably defined. */
1594 lookup_typename (const struct language_defn
*language
,
1596 const struct block
*block
, int noerr
)
1600 sym
= lookup_symbol_in_language (name
, block
, VAR_DOMAIN
,
1601 language
->la_language
, NULL
).symbol
;
1602 if (sym
!= NULL
&& SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
1603 return SYMBOL_TYPE (sym
);
1607 error (_("No type named %s."), name
);
1611 lookup_unsigned_typename (const struct language_defn
*language
,
1614 char *uns
= (char *) alloca (strlen (name
) + 10);
1616 strcpy (uns
, "unsigned ");
1617 strcpy (uns
+ 9, name
);
1618 return lookup_typename (language
, uns
, NULL
, 0);
1622 lookup_signed_typename (const struct language_defn
*language
, const char *name
)
1625 char *uns
= (char *) alloca (strlen (name
) + 8);
1627 strcpy (uns
, "signed ");
1628 strcpy (uns
+ 7, name
);
1629 t
= lookup_typename (language
, uns
, NULL
, 1);
1630 /* If we don't find "signed FOO" just try again with plain "FOO". */
1633 return lookup_typename (language
, name
, NULL
, 0);
1636 /* Lookup a structure type named "struct NAME",
1637 visible in lexical block BLOCK. */
1640 lookup_struct (const char *name
, const struct block
*block
)
1644 sym
= lookup_symbol (name
, block
, STRUCT_DOMAIN
, 0).symbol
;
1648 error (_("No struct type named %s."), name
);
1650 if (SYMBOL_TYPE (sym
)->code () != TYPE_CODE_STRUCT
)
1652 error (_("This context has class, union or enum %s, not a struct."),
1655 return (SYMBOL_TYPE (sym
));
1658 /* Lookup a union type named "union NAME",
1659 visible in lexical block BLOCK. */
1662 lookup_union (const char *name
, const struct block
*block
)
1667 sym
= lookup_symbol (name
, block
, STRUCT_DOMAIN
, 0).symbol
;
1670 error (_("No union type named %s."), name
);
1672 t
= SYMBOL_TYPE (sym
);
1674 if (t
->code () == TYPE_CODE_UNION
)
1677 /* If we get here, it's not a union. */
1678 error (_("This context has class, struct or enum %s, not a union."),
1682 /* Lookup an enum type named "enum NAME",
1683 visible in lexical block BLOCK. */
1686 lookup_enum (const char *name
, const struct block
*block
)
1690 sym
= lookup_symbol (name
, block
, STRUCT_DOMAIN
, 0).symbol
;
1693 error (_("No enum type named %s."), name
);
1695 if (SYMBOL_TYPE (sym
)->code () != TYPE_CODE_ENUM
)
1697 error (_("This context has class, struct or union %s, not an enum."),
1700 return (SYMBOL_TYPE (sym
));
1703 /* Lookup a template type named "template NAME<TYPE>",
1704 visible in lexical block BLOCK. */
1707 lookup_template_type (const char *name
, struct type
*type
,
1708 const struct block
*block
)
1711 char *nam
= (char *)
1712 alloca (strlen (name
) + strlen (type
->name ()) + 4);
1716 strcat (nam
, type
->name ());
1717 strcat (nam
, " >"); /* FIXME, extra space still introduced in gcc? */
1719 sym
= lookup_symbol (nam
, block
, VAR_DOMAIN
, 0).symbol
;
1723 error (_("No template type named %s."), name
);
1725 if (SYMBOL_TYPE (sym
)->code () != TYPE_CODE_STRUCT
)
1727 error (_("This context has class, union or enum %s, not a struct."),
1730 return (SYMBOL_TYPE (sym
));
1733 /* See gdbtypes.h. */
1736 lookup_struct_elt (struct type
*type
, const char *name
, int noerr
)
1742 type
= check_typedef (type
);
1743 if (type
->code () != TYPE_CODE_PTR
1744 && type
->code () != TYPE_CODE_REF
)
1746 type
= TYPE_TARGET_TYPE (type
);
1749 if (type
->code () != TYPE_CODE_STRUCT
1750 && type
->code () != TYPE_CODE_UNION
)
1752 std::string type_name
= type_to_string (type
);
1753 error (_("Type %s is not a structure or union type."),
1754 type_name
.c_str ());
1757 for (i
= type
->num_fields () - 1; i
>= TYPE_N_BASECLASSES (type
); i
--)
1759 const char *t_field_name
= TYPE_FIELD_NAME (type
, i
);
1761 if (t_field_name
&& (strcmp_iw (t_field_name
, name
) == 0))
1763 return {&type
->field (i
), TYPE_FIELD_BITPOS (type
, i
)};
1765 else if (!t_field_name
|| *t_field_name
== '\0')
1768 = lookup_struct_elt (TYPE_FIELD_TYPE (type
, i
), name
, 1);
1769 if (elt
.field
!= NULL
)
1771 elt
.offset
+= TYPE_FIELD_BITPOS (type
, i
);
1777 /* OK, it's not in this class. Recursively check the baseclasses. */
1778 for (i
= TYPE_N_BASECLASSES (type
) - 1; i
>= 0; i
--)
1780 struct_elt elt
= lookup_struct_elt (TYPE_BASECLASS (type
, i
), name
, 1);
1781 if (elt
.field
!= NULL
)
1786 return {nullptr, 0};
1788 std::string type_name
= type_to_string (type
);
1789 error (_("Type %s has no component named %s."), type_name
.c_str (), name
);
1792 /* See gdbtypes.h. */
1795 lookup_struct_elt_type (struct type
*type
, const char *name
, int noerr
)
1797 struct_elt elt
= lookup_struct_elt (type
, name
, noerr
);
1798 if (elt
.field
!= NULL
)
1799 return FIELD_TYPE (*elt
.field
);
1804 /* Store in *MAX the largest number representable by unsigned integer type
1808 get_unsigned_type_max (struct type
*type
, ULONGEST
*max
)
1812 type
= check_typedef (type
);
1813 gdb_assert (type
->code () == TYPE_CODE_INT
&& TYPE_UNSIGNED (type
));
1814 gdb_assert (TYPE_LENGTH (type
) <= sizeof (ULONGEST
));
1816 /* Written this way to avoid overflow. */
1817 n
= TYPE_LENGTH (type
) * TARGET_CHAR_BIT
;
1818 *max
= ((((ULONGEST
) 1 << (n
- 1)) - 1) << 1) | 1;
1821 /* Store in *MIN, *MAX the smallest and largest numbers representable by
1822 signed integer type TYPE. */
1825 get_signed_type_minmax (struct type
*type
, LONGEST
*min
, LONGEST
*max
)
1829 type
= check_typedef (type
);
1830 gdb_assert (type
->code () == TYPE_CODE_INT
&& !TYPE_UNSIGNED (type
));
1831 gdb_assert (TYPE_LENGTH (type
) <= sizeof (LONGEST
));
1833 n
= TYPE_LENGTH (type
) * TARGET_CHAR_BIT
;
1834 *min
= -((ULONGEST
) 1 << (n
- 1));
1835 *max
= ((ULONGEST
) 1 << (n
- 1)) - 1;
1838 /* Internal routine called by TYPE_VPTR_FIELDNO to return the value of
1839 cplus_stuff.vptr_fieldno.
1841 cplus_stuff is initialized to cplus_struct_default which does not
1842 set vptr_fieldno to -1 for portability reasons (IWBN to use C99
1843 designated initializers). We cope with that here. */
1846 internal_type_vptr_fieldno (struct type
*type
)
1848 type
= check_typedef (type
);
1849 gdb_assert (type
->code () == TYPE_CODE_STRUCT
1850 || type
->code () == TYPE_CODE_UNION
);
1851 if (!HAVE_CPLUS_STRUCT (type
))
1853 return TYPE_RAW_CPLUS_SPECIFIC (type
)->vptr_fieldno
;
1856 /* Set the value of cplus_stuff.vptr_fieldno. */
1859 set_type_vptr_fieldno (struct type
*type
, int fieldno
)
1861 type
= check_typedef (type
);
1862 gdb_assert (type
->code () == TYPE_CODE_STRUCT
1863 || type
->code () == TYPE_CODE_UNION
);
1864 if (!HAVE_CPLUS_STRUCT (type
))
1865 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
1866 TYPE_RAW_CPLUS_SPECIFIC (type
)->vptr_fieldno
= fieldno
;
1869 /* Internal routine called by TYPE_VPTR_BASETYPE to return the value of
1870 cplus_stuff.vptr_basetype. */
1873 internal_type_vptr_basetype (struct type
*type
)
1875 type
= check_typedef (type
);
1876 gdb_assert (type
->code () == TYPE_CODE_STRUCT
1877 || type
->code () == TYPE_CODE_UNION
);
1878 gdb_assert (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_CPLUS_STUFF
);
1879 return TYPE_RAW_CPLUS_SPECIFIC (type
)->vptr_basetype
;
1882 /* Set the value of cplus_stuff.vptr_basetype. */
1885 set_type_vptr_basetype (struct type
*type
, struct type
*basetype
)
1887 type
= check_typedef (type
);
1888 gdb_assert (type
->code () == TYPE_CODE_STRUCT
1889 || type
->code () == TYPE_CODE_UNION
);
1890 if (!HAVE_CPLUS_STRUCT (type
))
1891 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
1892 TYPE_RAW_CPLUS_SPECIFIC (type
)->vptr_basetype
= basetype
;
1895 /* Lookup the vptr basetype/fieldno values for TYPE.
1896 If found store vptr_basetype in *BASETYPEP if non-NULL, and return
1897 vptr_fieldno. Also, if found and basetype is from the same objfile,
1899 If not found, return -1 and ignore BASETYPEP.
1900 Callers should be aware that in some cases (for example,
1901 the type or one of its baseclasses is a stub type and we are
1902 debugging a .o file, or the compiler uses DWARF-2 and is not GCC),
1903 this function will not be able to find the
1904 virtual function table pointer, and vptr_fieldno will remain -1 and
1905 vptr_basetype will remain NULL or incomplete. */
1908 get_vptr_fieldno (struct type
*type
, struct type
**basetypep
)
1910 type
= check_typedef (type
);
1912 if (TYPE_VPTR_FIELDNO (type
) < 0)
1916 /* We must start at zero in case the first (and only) baseclass
1917 is virtual (and hence we cannot share the table pointer). */
1918 for (i
= 0; i
< TYPE_N_BASECLASSES (type
); i
++)
1920 struct type
*baseclass
= check_typedef (TYPE_BASECLASS (type
, i
));
1922 struct type
*basetype
;
1924 fieldno
= get_vptr_fieldno (baseclass
, &basetype
);
1927 /* If the type comes from a different objfile we can't cache
1928 it, it may have a different lifetime. PR 2384 */
1929 if (TYPE_OBJFILE (type
) == TYPE_OBJFILE (basetype
))
1931 set_type_vptr_fieldno (type
, fieldno
);
1932 set_type_vptr_basetype (type
, basetype
);
1935 *basetypep
= basetype
;
1946 *basetypep
= TYPE_VPTR_BASETYPE (type
);
1947 return TYPE_VPTR_FIELDNO (type
);
1952 stub_noname_complaint (void)
1954 complaint (_("stub type has NULL name"));
1957 /* Return nonzero if TYPE has a DYN_PROP_BYTE_STRIDE dynamic property
1958 attached to it, and that property has a non-constant value. */
1961 array_type_has_dynamic_stride (struct type
*type
)
1963 struct dynamic_prop
*prop
= type
->dyn_prop (DYN_PROP_BYTE_STRIDE
);
1965 return (prop
!= NULL
&& prop
->kind
!= PROP_CONST
);
1968 /* Worker for is_dynamic_type. */
1971 is_dynamic_type_internal (struct type
*type
, int top_level
)
1973 type
= check_typedef (type
);
1975 /* We only want to recognize references at the outermost level. */
1976 if (top_level
&& type
->code () == TYPE_CODE_REF
)
1977 type
= check_typedef (TYPE_TARGET_TYPE (type
));
1979 /* Types that have a dynamic TYPE_DATA_LOCATION are considered
1980 dynamic, even if the type itself is statically defined.
1981 From a user's point of view, this may appear counter-intuitive;
1982 but it makes sense in this context, because the point is to determine
1983 whether any part of the type needs to be resolved before it can
1985 if (TYPE_DATA_LOCATION (type
) != NULL
1986 && (TYPE_DATA_LOCATION_KIND (type
) == PROP_LOCEXPR
1987 || TYPE_DATA_LOCATION_KIND (type
) == PROP_LOCLIST
))
1990 if (TYPE_ASSOCIATED_PROP (type
))
1993 if (TYPE_ALLOCATED_PROP (type
))
1996 struct dynamic_prop
*prop
= type
->dyn_prop (DYN_PROP_VARIANT_PARTS
);
1997 if (prop
!= nullptr && prop
->kind
!= PROP_TYPE
)
2000 if (TYPE_HAS_DYNAMIC_LENGTH (type
))
2003 switch (type
->code ())
2005 case TYPE_CODE_RANGE
:
2007 /* A range type is obviously dynamic if it has at least one
2008 dynamic bound. But also consider the range type to be
2009 dynamic when its subtype is dynamic, even if the bounds
2010 of the range type are static. It allows us to assume that
2011 the subtype of a static range type is also static. */
2012 return (!has_static_range (TYPE_RANGE_DATA (type
))
2013 || is_dynamic_type_internal (TYPE_TARGET_TYPE (type
), 0));
2016 case TYPE_CODE_STRING
:
2017 /* Strings are very much like an array of characters, and can be
2018 treated as one here. */
2019 case TYPE_CODE_ARRAY
:
2021 gdb_assert (type
->num_fields () == 1);
2023 /* The array is dynamic if either the bounds are dynamic... */
2024 if (is_dynamic_type_internal (TYPE_INDEX_TYPE (type
), 0))
2026 /* ... or the elements it contains have a dynamic contents... */
2027 if (is_dynamic_type_internal (TYPE_TARGET_TYPE (type
), 0))
2029 /* ... or if it has a dynamic stride... */
2030 if (array_type_has_dynamic_stride (type
))
2035 case TYPE_CODE_STRUCT
:
2036 case TYPE_CODE_UNION
:
2040 bool is_cplus
= HAVE_CPLUS_STRUCT (type
);
2042 for (i
= 0; i
< type
->num_fields (); ++i
)
2044 /* Static fields can be ignored here. */
2045 if (field_is_static (&type
->field (i
)))
2047 /* If the field has dynamic type, then so does TYPE. */
2048 if (is_dynamic_type_internal (TYPE_FIELD_TYPE (type
, i
), 0))
2050 /* If the field is at a fixed offset, then it is not
2052 if (TYPE_FIELD_LOC_KIND (type
, i
) != FIELD_LOC_KIND_DWARF_BLOCK
)
2054 /* Do not consider C++ virtual base types to be dynamic
2055 due to the field's offset being dynamic; these are
2056 handled via other means. */
2057 if (is_cplus
&& BASETYPE_VIA_VIRTUAL (type
, i
))
2068 /* See gdbtypes.h. */
2071 is_dynamic_type (struct type
*type
)
2073 return is_dynamic_type_internal (type
, 1);
2076 static struct type
*resolve_dynamic_type_internal
2077 (struct type
*type
, struct property_addr_info
*addr_stack
, int top_level
);
2079 /* Given a dynamic range type (dyn_range_type) and a stack of
2080 struct property_addr_info elements, return a static version
2083 static struct type
*
2084 resolve_dynamic_range (struct type
*dyn_range_type
,
2085 struct property_addr_info
*addr_stack
)
2088 struct type
*static_range_type
, *static_target_type
;
2089 const struct dynamic_prop
*prop
;
2090 struct dynamic_prop low_bound
, high_bound
, stride
;
2092 gdb_assert (dyn_range_type
->code () == TYPE_CODE_RANGE
);
2094 prop
= &TYPE_RANGE_DATA (dyn_range_type
)->low
;
2095 if (dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2097 low_bound
.kind
= PROP_CONST
;
2098 low_bound
.data
.const_val
= value
;
2102 low_bound
.kind
= PROP_UNDEFINED
;
2103 low_bound
.data
.const_val
= 0;
2106 prop
= &TYPE_RANGE_DATA (dyn_range_type
)->high
;
2107 if (dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2109 high_bound
.kind
= PROP_CONST
;
2110 high_bound
.data
.const_val
= value
;
2112 if (TYPE_RANGE_DATA (dyn_range_type
)->flag_upper_bound_is_count
)
2113 high_bound
.data
.const_val
2114 = low_bound
.data
.const_val
+ high_bound
.data
.const_val
- 1;
2118 high_bound
.kind
= PROP_UNDEFINED
;
2119 high_bound
.data
.const_val
= 0;
2122 bool byte_stride_p
= TYPE_RANGE_DATA (dyn_range_type
)->flag_is_byte_stride
;
2123 prop
= &TYPE_RANGE_DATA (dyn_range_type
)->stride
;
2124 if (dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2126 stride
.kind
= PROP_CONST
;
2127 stride
.data
.const_val
= value
;
2129 /* If we have a bit stride that is not an exact number of bytes then
2130 I really don't think this is going to work with current GDB, the
2131 array indexing code in GDB seems to be pretty heavily tied to byte
2132 offsets right now. Assuming 8 bits in a byte. */
2133 struct gdbarch
*gdbarch
= get_type_arch (dyn_range_type
);
2134 int unit_size
= gdbarch_addressable_memory_unit_size (gdbarch
);
2135 if (!byte_stride_p
&& (value
% (unit_size
* 8)) != 0)
2136 error (_("bit strides that are not a multiple of the byte size "
2137 "are currently not supported"));
2141 stride
.kind
= PROP_UNDEFINED
;
2142 stride
.data
.const_val
= 0;
2143 byte_stride_p
= true;
2147 = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (dyn_range_type
),
2149 LONGEST bias
= TYPE_RANGE_DATA (dyn_range_type
)->bias
;
2150 static_range_type
= create_range_type_with_stride
2151 (copy_type (dyn_range_type
), static_target_type
,
2152 &low_bound
, &high_bound
, bias
, &stride
, byte_stride_p
);
2153 TYPE_RANGE_DATA (static_range_type
)->flag_bound_evaluated
= 1;
2154 return static_range_type
;
2157 /* Resolves dynamic bound values of an array or string type TYPE to static
2158 ones. ADDR_STACK is a stack of struct property_addr_info to be used if
2159 needed during the dynamic resolution. */
2161 static struct type
*
2162 resolve_dynamic_array_or_string (struct type
*type
,
2163 struct property_addr_info
*addr_stack
)
2166 struct type
*elt_type
;
2167 struct type
*range_type
;
2168 struct type
*ary_dim
;
2169 struct dynamic_prop
*prop
;
2170 unsigned int bit_stride
= 0;
2172 /* For dynamic type resolution strings can be treated like arrays of
2174 gdb_assert (type
->code () == TYPE_CODE_ARRAY
2175 || type
->code () == TYPE_CODE_STRING
);
2177 type
= copy_type (type
);
2180 range_type
= check_typedef (TYPE_INDEX_TYPE (elt_type
));
2181 range_type
= resolve_dynamic_range (range_type
, addr_stack
);
2183 /* Resolve allocated/associated here before creating a new array type, which
2184 will update the length of the array accordingly. */
2185 prop
= TYPE_ALLOCATED_PROP (type
);
2186 if (prop
!= NULL
&& dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2188 TYPE_DYN_PROP_ADDR (prop
) = value
;
2189 TYPE_DYN_PROP_KIND (prop
) = PROP_CONST
;
2191 prop
= TYPE_ASSOCIATED_PROP (type
);
2192 if (prop
!= NULL
&& dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2194 TYPE_DYN_PROP_ADDR (prop
) = value
;
2195 TYPE_DYN_PROP_KIND (prop
) = PROP_CONST
;
2198 ary_dim
= check_typedef (TYPE_TARGET_TYPE (elt_type
));
2200 if (ary_dim
!= NULL
&& ary_dim
->code () == TYPE_CODE_ARRAY
)
2201 elt_type
= resolve_dynamic_array_or_string (ary_dim
, addr_stack
);
2203 elt_type
= TYPE_TARGET_TYPE (type
);
2205 prop
= type
->dyn_prop (DYN_PROP_BYTE_STRIDE
);
2208 if (dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2210 type
->remove_dyn_prop (DYN_PROP_BYTE_STRIDE
);
2211 bit_stride
= (unsigned int) (value
* 8);
2215 /* Could be a bug in our code, but it could also happen
2216 if the DWARF info is not correct. Issue a warning,
2217 and assume no byte/bit stride (leave bit_stride = 0). */
2218 warning (_("cannot determine array stride for type %s"),
2219 type
->name () ? type
->name () : "<no name>");
2223 bit_stride
= TYPE_FIELD_BITSIZE (type
, 0);
2225 return create_array_type_with_stride (type
, elt_type
, range_type
, NULL
,
2229 /* Resolve dynamic bounds of members of the union TYPE to static
2230 bounds. ADDR_STACK is a stack of struct property_addr_info
2231 to be used if needed during the dynamic resolution. */
2233 static struct type
*
2234 resolve_dynamic_union (struct type
*type
,
2235 struct property_addr_info
*addr_stack
)
2237 struct type
*resolved_type
;
2239 unsigned int max_len
= 0;
2241 gdb_assert (type
->code () == TYPE_CODE_UNION
);
2243 resolved_type
= copy_type (type
);
2244 resolved_type
->set_fields
2246 TYPE_ALLOC (resolved_type
,
2247 resolved_type
->num_fields () * sizeof (struct field
)));
2248 memcpy (resolved_type
->fields (),
2250 resolved_type
->num_fields () * sizeof (struct field
));
2251 for (i
= 0; i
< resolved_type
->num_fields (); ++i
)
2255 if (field_is_static (&type
->field (i
)))
2258 t
= resolve_dynamic_type_internal (TYPE_FIELD_TYPE (resolved_type
, i
),
2260 TYPE_FIELD_TYPE (resolved_type
, i
) = t
;
2261 if (TYPE_LENGTH (t
) > max_len
)
2262 max_len
= TYPE_LENGTH (t
);
2265 TYPE_LENGTH (resolved_type
) = max_len
;
2266 return resolved_type
;
2269 /* See gdbtypes.h. */
2272 variant::matches (ULONGEST value
, bool is_unsigned
) const
2274 for (const discriminant_range
&range
: discriminants
)
2275 if (range
.contains (value
, is_unsigned
))
2281 compute_variant_fields_inner (struct type
*type
,
2282 struct property_addr_info
*addr_stack
,
2283 const variant_part
&part
,
2284 std::vector
<bool> &flags
);
2286 /* A helper function to determine which variant fields will be active.
2287 This handles both the variant's direct fields, and any variant
2288 parts embedded in this variant. TYPE is the type we're examining.
2289 ADDR_STACK holds information about the concrete object. VARIANT is
2290 the current variant to be handled. FLAGS is where the results are
2291 stored -- this function sets the Nth element in FLAGS if the
2292 corresponding field is enabled. ENABLED is whether this variant is
2296 compute_variant_fields_recurse (struct type
*type
,
2297 struct property_addr_info
*addr_stack
,
2298 const variant
&variant
,
2299 std::vector
<bool> &flags
,
2302 for (int field
= variant
.first_field
; field
< variant
.last_field
; ++field
)
2303 flags
[field
] = enabled
;
2305 for (const variant_part
&new_part
: variant
.parts
)
2308 compute_variant_fields_inner (type
, addr_stack
, new_part
, flags
);
2311 for (const auto &sub_variant
: new_part
.variants
)
2312 compute_variant_fields_recurse (type
, addr_stack
, sub_variant
,
2318 /* A helper function to determine which variant fields will be active.
2319 This evaluates the discriminant, decides which variant (if any) is
2320 active, and then updates FLAGS to reflect which fields should be
2321 available. TYPE is the type we're examining. ADDR_STACK holds
2322 information about the concrete object. VARIANT is the current
2323 variant to be handled. FLAGS is where the results are stored --
2324 this function sets the Nth element in FLAGS if the corresponding
2325 field is enabled. */
2328 compute_variant_fields_inner (struct type
*type
,
2329 struct property_addr_info
*addr_stack
,
2330 const variant_part
&part
,
2331 std::vector
<bool> &flags
)
2333 /* Evaluate the discriminant. */
2334 gdb::optional
<ULONGEST
> discr_value
;
2335 if (part
.discriminant_index
!= -1)
2337 int idx
= part
.discriminant_index
;
2339 if (TYPE_FIELD_LOC_KIND (type
, idx
) != FIELD_LOC_KIND_BITPOS
)
2340 error (_("Cannot determine struct field location"
2341 " (invalid location kind)"));
2343 if (addr_stack
->valaddr
.data () != NULL
)
2344 discr_value
= unpack_field_as_long (type
, addr_stack
->valaddr
.data (),
2348 CORE_ADDR addr
= (addr_stack
->addr
2349 + (TYPE_FIELD_BITPOS (type
, idx
)
2350 / TARGET_CHAR_BIT
));
2352 LONGEST bitsize
= TYPE_FIELD_BITSIZE (type
, idx
);
2353 LONGEST size
= bitsize
/ 8;
2355 size
= TYPE_LENGTH (TYPE_FIELD_TYPE (type
, idx
));
2357 gdb_byte bits
[sizeof (ULONGEST
)];
2358 read_memory (addr
, bits
, size
);
2360 LONGEST bitpos
= (TYPE_FIELD_BITPOS (type
, idx
)
2363 discr_value
= unpack_bits_as_long (TYPE_FIELD_TYPE (type
, idx
),
2364 bits
, bitpos
, bitsize
);
2368 /* Go through each variant and see which applies. */
2369 const variant
*default_variant
= nullptr;
2370 const variant
*applied_variant
= nullptr;
2371 for (const auto &variant
: part
.variants
)
2373 if (variant
.is_default ())
2374 default_variant
= &variant
;
2375 else if (discr_value
.has_value ()
2376 && variant
.matches (*discr_value
, part
.is_unsigned
))
2378 applied_variant
= &variant
;
2382 if (applied_variant
== nullptr)
2383 applied_variant
= default_variant
;
2385 for (const auto &variant
: part
.variants
)
2386 compute_variant_fields_recurse (type
, addr_stack
, variant
,
2387 flags
, applied_variant
== &variant
);
2390 /* Determine which variant fields are available in TYPE. The enabled
2391 fields are stored in RESOLVED_TYPE. ADDR_STACK holds information
2392 about the concrete object. PARTS describes the top-level variant
2393 parts for this type. */
2396 compute_variant_fields (struct type
*type
,
2397 struct type
*resolved_type
,
2398 struct property_addr_info
*addr_stack
,
2399 const gdb::array_view
<variant_part
> &parts
)
2401 /* Assume all fields are included by default. */
2402 std::vector
<bool> flags (resolved_type
->num_fields (), true);
2404 /* Now disable fields based on the variants that control them. */
2405 for (const auto &part
: parts
)
2406 compute_variant_fields_inner (type
, addr_stack
, part
, flags
);
2408 resolved_type
->set_num_fields
2409 (std::count (flags
.begin (), flags
.end (), true));
2410 resolved_type
->set_fields
2412 TYPE_ALLOC (resolved_type
,
2413 resolved_type
->num_fields () * sizeof (struct field
)));
2416 for (int i
= 0; i
< type
->num_fields (); ++i
)
2421 resolved_type
->field (out
) = type
->field (i
);
2426 /* Resolve dynamic bounds of members of the struct TYPE to static
2427 bounds. ADDR_STACK is a stack of struct property_addr_info to
2428 be used if needed during the dynamic resolution. */
2430 static struct type
*
2431 resolve_dynamic_struct (struct type
*type
,
2432 struct property_addr_info
*addr_stack
)
2434 struct type
*resolved_type
;
2436 unsigned resolved_type_bit_length
= 0;
2438 gdb_assert (type
->code () == TYPE_CODE_STRUCT
);
2439 gdb_assert (type
->num_fields () > 0);
2441 resolved_type
= copy_type (type
);
2443 dynamic_prop
*variant_prop
= resolved_type
->dyn_prop (DYN_PROP_VARIANT_PARTS
);
2444 if (variant_prop
!= nullptr && variant_prop
->kind
== PROP_VARIANT_PARTS
)
2446 compute_variant_fields (type
, resolved_type
, addr_stack
,
2447 *variant_prop
->data
.variant_parts
);
2448 /* We want to leave the property attached, so that the Rust code
2449 can tell whether the type was originally an enum. */
2450 variant_prop
->kind
= PROP_TYPE
;
2451 variant_prop
->data
.original_type
= type
;
2455 resolved_type
->set_fields
2457 TYPE_ALLOC (resolved_type
,
2458 resolved_type
->num_fields () * sizeof (struct field
)));
2459 memcpy (resolved_type
->fields (),
2461 resolved_type
->num_fields () * sizeof (struct field
));
2464 for (i
= 0; i
< resolved_type
->num_fields (); ++i
)
2466 unsigned new_bit_length
;
2467 struct property_addr_info pinfo
;
2469 if (field_is_static (&resolved_type
->field (i
)))
2472 if (TYPE_FIELD_LOC_KIND (resolved_type
, i
) == FIELD_LOC_KIND_DWARF_BLOCK
)
2474 struct dwarf2_property_baton baton
;
2476 = lookup_pointer_type (TYPE_FIELD_TYPE (resolved_type
, i
));
2477 baton
.locexpr
= *TYPE_FIELD_DWARF_BLOCK (resolved_type
, i
);
2479 struct dynamic_prop prop
;
2480 prop
.kind
= PROP_LOCEXPR
;
2481 prop
.data
.baton
= &baton
;
2484 if (dwarf2_evaluate_property (&prop
, nullptr, addr_stack
, &addr
,
2486 SET_FIELD_BITPOS (resolved_type
->field (i
),
2487 TARGET_CHAR_BIT
* (addr
- addr_stack
->addr
));
2490 /* As we know this field is not a static field, the field's
2491 field_loc_kind should be FIELD_LOC_KIND_BITPOS. Verify
2492 this is the case, but only trigger a simple error rather
2493 than an internal error if that fails. While failing
2494 that verification indicates a bug in our code, the error
2495 is not severe enough to suggest to the user he stops
2496 his debugging session because of it. */
2497 if (TYPE_FIELD_LOC_KIND (resolved_type
, i
) != FIELD_LOC_KIND_BITPOS
)
2498 error (_("Cannot determine struct field location"
2499 " (invalid location kind)"));
2501 pinfo
.type
= check_typedef (TYPE_FIELD_TYPE (resolved_type
, i
));
2502 pinfo
.valaddr
= addr_stack
->valaddr
;
2505 + (TYPE_FIELD_BITPOS (resolved_type
, i
) / TARGET_CHAR_BIT
));
2506 pinfo
.next
= addr_stack
;
2508 TYPE_FIELD_TYPE (resolved_type
, i
)
2509 = resolve_dynamic_type_internal (TYPE_FIELD_TYPE (resolved_type
, i
),
2511 gdb_assert (TYPE_FIELD_LOC_KIND (resolved_type
, i
)
2512 == FIELD_LOC_KIND_BITPOS
);
2514 new_bit_length
= TYPE_FIELD_BITPOS (resolved_type
, i
);
2515 if (TYPE_FIELD_BITSIZE (resolved_type
, i
) != 0)
2516 new_bit_length
+= TYPE_FIELD_BITSIZE (resolved_type
, i
);
2518 new_bit_length
+= (TYPE_LENGTH (TYPE_FIELD_TYPE (resolved_type
, i
))
2521 /* Normally, we would use the position and size of the last field
2522 to determine the size of the enclosing structure. But GCC seems
2523 to be encoding the position of some fields incorrectly when
2524 the struct contains a dynamic field that is not placed last.
2525 So we compute the struct size based on the field that has
2526 the highest position + size - probably the best we can do. */
2527 if (new_bit_length
> resolved_type_bit_length
)
2528 resolved_type_bit_length
= new_bit_length
;
2531 /* The length of a type won't change for fortran, but it does for C and Ada.
2532 For fortran the size of dynamic fields might change over time but not the
2533 type length of the structure. If we adapt it, we run into problems
2534 when calculating the element offset for arrays of structs. */
2535 if (current_language
->la_language
!= language_fortran
)
2536 TYPE_LENGTH (resolved_type
)
2537 = (resolved_type_bit_length
+ TARGET_CHAR_BIT
- 1) / TARGET_CHAR_BIT
;
2539 /* The Ada language uses this field as a cache for static fixed types: reset
2540 it as RESOLVED_TYPE must have its own static fixed type. */
2541 TYPE_TARGET_TYPE (resolved_type
) = NULL
;
2543 return resolved_type
;
2546 /* Worker for resolved_dynamic_type. */
2548 static struct type
*
2549 resolve_dynamic_type_internal (struct type
*type
,
2550 struct property_addr_info
*addr_stack
,
2553 struct type
*real_type
= check_typedef (type
);
2554 struct type
*resolved_type
= nullptr;
2555 struct dynamic_prop
*prop
;
2558 if (!is_dynamic_type_internal (real_type
, top_level
))
2561 gdb::optional
<CORE_ADDR
> type_length
;
2562 prop
= TYPE_DYNAMIC_LENGTH (type
);
2564 && dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2565 type_length
= value
;
2567 if (type
->code () == TYPE_CODE_TYPEDEF
)
2569 resolved_type
= copy_type (type
);
2570 TYPE_TARGET_TYPE (resolved_type
)
2571 = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (type
), addr_stack
,
2576 /* Before trying to resolve TYPE, make sure it is not a stub. */
2579 switch (type
->code ())
2583 struct property_addr_info pinfo
;
2585 pinfo
.type
= check_typedef (TYPE_TARGET_TYPE (type
));
2587 if (addr_stack
->valaddr
.data () != NULL
)
2588 pinfo
.addr
= extract_typed_address (addr_stack
->valaddr
.data (),
2591 pinfo
.addr
= read_memory_typed_address (addr_stack
->addr
, type
);
2592 pinfo
.next
= addr_stack
;
2594 resolved_type
= copy_type (type
);
2595 TYPE_TARGET_TYPE (resolved_type
)
2596 = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (type
),
2601 case TYPE_CODE_STRING
:
2602 /* Strings are very much like an array of characters, and can be
2603 treated as one here. */
2604 case TYPE_CODE_ARRAY
:
2605 resolved_type
= resolve_dynamic_array_or_string (type
, addr_stack
);
2608 case TYPE_CODE_RANGE
:
2609 resolved_type
= resolve_dynamic_range (type
, addr_stack
);
2612 case TYPE_CODE_UNION
:
2613 resolved_type
= resolve_dynamic_union (type
, addr_stack
);
2616 case TYPE_CODE_STRUCT
:
2617 resolved_type
= resolve_dynamic_struct (type
, addr_stack
);
2622 if (resolved_type
== nullptr)
2625 if (type_length
.has_value ())
2627 TYPE_LENGTH (resolved_type
) = *type_length
;
2628 resolved_type
->remove_dyn_prop (DYN_PROP_BYTE_SIZE
);
2631 /* Resolve data_location attribute. */
2632 prop
= TYPE_DATA_LOCATION (resolved_type
);
2634 && dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2636 TYPE_DYN_PROP_ADDR (prop
) = value
;
2637 TYPE_DYN_PROP_KIND (prop
) = PROP_CONST
;
2640 return resolved_type
;
2643 /* See gdbtypes.h */
2646 resolve_dynamic_type (struct type
*type
,
2647 gdb::array_view
<const gdb_byte
> valaddr
,
2650 struct property_addr_info pinfo
2651 = {check_typedef (type
), valaddr
, addr
, NULL
};
2653 return resolve_dynamic_type_internal (type
, &pinfo
, 1);
2656 /* See gdbtypes.h */
2659 type::dyn_prop (dynamic_prop_node_kind prop_kind
) const
2661 dynamic_prop_list
*node
= this->main_type
->dyn_prop_list
;
2663 while (node
!= NULL
)
2665 if (node
->prop_kind
== prop_kind
)
2672 /* See gdbtypes.h */
2675 type::add_dyn_prop (dynamic_prop_node_kind prop_kind
, dynamic_prop prop
)
2677 struct dynamic_prop_list
*temp
;
2679 gdb_assert (TYPE_OBJFILE_OWNED (this));
2681 temp
= XOBNEW (&TYPE_OBJFILE (this)->objfile_obstack
,
2682 struct dynamic_prop_list
);
2683 temp
->prop_kind
= prop_kind
;
2685 temp
->next
= this->main_type
->dyn_prop_list
;
2687 this->main_type
->dyn_prop_list
= temp
;
2690 /* See gdbtypes.h. */
2693 type::remove_dyn_prop (dynamic_prop_node_kind kind
)
2695 struct dynamic_prop_list
*prev_node
, *curr_node
;
2697 curr_node
= this->main_type
->dyn_prop_list
;
2700 while (NULL
!= curr_node
)
2702 if (curr_node
->prop_kind
== kind
)
2704 /* Update the linked list but don't free anything.
2705 The property was allocated on objstack and it is not known
2706 if we are on top of it. Nevertheless, everything is released
2707 when the complete objstack is freed. */
2708 if (NULL
== prev_node
)
2709 this->main_type
->dyn_prop_list
= curr_node
->next
;
2711 prev_node
->next
= curr_node
->next
;
2716 prev_node
= curr_node
;
2717 curr_node
= curr_node
->next
;
2721 /* Find the real type of TYPE. This function returns the real type,
2722 after removing all layers of typedefs, and completing opaque or stub
2723 types. Completion changes the TYPE argument, but stripping of
2726 Instance flags (e.g. const/volatile) are preserved as typedefs are
2727 stripped. If necessary a new qualified form of the underlying type
2730 NOTE: This will return a typedef if TYPE_TARGET_TYPE for the typedef has
2731 not been computed and we're either in the middle of reading symbols, or
2732 there was no name for the typedef in the debug info.
2734 NOTE: Lookup of opaque types can throw errors for invalid symbol files.
2735 QUITs in the symbol reading code can also throw.
2736 Thus this function can throw an exception.
2738 If TYPE is a TYPE_CODE_TYPEDEF, its length is updated to the length of
2741 If this is a stubbed struct (i.e. declared as struct foo *), see if
2742 we can find a full definition in some other file. If so, copy this
2743 definition, so we can use it in future. There used to be a comment
2744 (but not any code) that if we don't find a full definition, we'd
2745 set a flag so we don't spend time in the future checking the same
2746 type. That would be a mistake, though--we might load in more
2747 symbols which contain a full definition for the type. */
2750 check_typedef (struct type
*type
)
2752 struct type
*orig_type
= type
;
2753 /* While we're removing typedefs, we don't want to lose qualifiers.
2754 E.g., const/volatile. */
2755 int instance_flags
= TYPE_INSTANCE_FLAGS (type
);
2759 while (type
->code () == TYPE_CODE_TYPEDEF
)
2761 if (!TYPE_TARGET_TYPE (type
))
2766 /* It is dangerous to call lookup_symbol if we are currently
2767 reading a symtab. Infinite recursion is one danger. */
2768 if (currently_reading_symtab
)
2769 return make_qualified_type (type
, instance_flags
, NULL
);
2771 name
= type
->name ();
2772 /* FIXME: shouldn't we look in STRUCT_DOMAIN and/or
2773 VAR_DOMAIN as appropriate? */
2776 stub_noname_complaint ();
2777 return make_qualified_type (type
, instance_flags
, NULL
);
2779 sym
= lookup_symbol (name
, 0, STRUCT_DOMAIN
, 0).symbol
;
2781 TYPE_TARGET_TYPE (type
) = SYMBOL_TYPE (sym
);
2782 else /* TYPE_CODE_UNDEF */
2783 TYPE_TARGET_TYPE (type
) = alloc_type_arch (get_type_arch (type
));
2785 type
= TYPE_TARGET_TYPE (type
);
2787 /* Preserve the instance flags as we traverse down the typedef chain.
2789 Handling address spaces/classes is nasty, what do we do if there's a
2791 E.g., what if an outer typedef marks the type as class_1 and an inner
2792 typedef marks the type as class_2?
2793 This is the wrong place to do such error checking. We leave it to
2794 the code that created the typedef in the first place to flag the
2795 error. We just pick the outer address space (akin to letting the
2796 outer cast in a chain of casting win), instead of assuming
2797 "it can't happen". */
2799 const int ALL_SPACES
= (TYPE_INSTANCE_FLAG_CODE_SPACE
2800 | TYPE_INSTANCE_FLAG_DATA_SPACE
);
2801 const int ALL_CLASSES
= TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL
;
2802 int new_instance_flags
= TYPE_INSTANCE_FLAGS (type
);
2804 /* Treat code vs data spaces and address classes separately. */
2805 if ((instance_flags
& ALL_SPACES
) != 0)
2806 new_instance_flags
&= ~ALL_SPACES
;
2807 if ((instance_flags
& ALL_CLASSES
) != 0)
2808 new_instance_flags
&= ~ALL_CLASSES
;
2810 instance_flags
|= new_instance_flags
;
2814 /* If this is a struct/class/union with no fields, then check
2815 whether a full definition exists somewhere else. This is for
2816 systems where a type definition with no fields is issued for such
2817 types, instead of identifying them as stub types in the first
2820 if (TYPE_IS_OPAQUE (type
)
2821 && opaque_type_resolution
2822 && !currently_reading_symtab
)
2824 const char *name
= type
->name ();
2825 struct type
*newtype
;
2829 stub_noname_complaint ();
2830 return make_qualified_type (type
, instance_flags
, NULL
);
2832 newtype
= lookup_transparent_type (name
);
2836 /* If the resolved type and the stub are in the same
2837 objfile, then replace the stub type with the real deal.
2838 But if they're in separate objfiles, leave the stub
2839 alone; we'll just look up the transparent type every time
2840 we call check_typedef. We can't create pointers between
2841 types allocated to different objfiles, since they may
2842 have different lifetimes. Trying to copy NEWTYPE over to
2843 TYPE's objfile is pointless, too, since you'll have to
2844 move over any other types NEWTYPE refers to, which could
2845 be an unbounded amount of stuff. */
2846 if (TYPE_OBJFILE (newtype
) == TYPE_OBJFILE (type
))
2847 type
= make_qualified_type (newtype
,
2848 TYPE_INSTANCE_FLAGS (type
),
2854 /* Otherwise, rely on the stub flag being set for opaque/stubbed
2856 else if (TYPE_STUB (type
) && !currently_reading_symtab
)
2858 const char *name
= type
->name ();
2859 /* FIXME: shouldn't we look in STRUCT_DOMAIN and/or VAR_DOMAIN
2865 stub_noname_complaint ();
2866 return make_qualified_type (type
, instance_flags
, NULL
);
2868 sym
= lookup_symbol (name
, 0, STRUCT_DOMAIN
, 0).symbol
;
2871 /* Same as above for opaque types, we can replace the stub
2872 with the complete type only if they are in the same
2874 if (TYPE_OBJFILE (SYMBOL_TYPE (sym
)) == TYPE_OBJFILE (type
))
2875 type
= make_qualified_type (SYMBOL_TYPE (sym
),
2876 TYPE_INSTANCE_FLAGS (type
),
2879 type
= SYMBOL_TYPE (sym
);
2883 if (TYPE_TARGET_STUB (type
))
2885 struct type
*target_type
= check_typedef (TYPE_TARGET_TYPE (type
));
2887 if (TYPE_STUB (target_type
) || TYPE_TARGET_STUB (target_type
))
2889 /* Nothing we can do. */
2891 else if (type
->code () == TYPE_CODE_RANGE
)
2893 TYPE_LENGTH (type
) = TYPE_LENGTH (target_type
);
2894 TYPE_TARGET_STUB (type
) = 0;
2896 else if (type
->code () == TYPE_CODE_ARRAY
2897 && update_static_array_size (type
))
2898 TYPE_TARGET_STUB (type
) = 0;
2901 type
= make_qualified_type (type
, instance_flags
, NULL
);
2903 /* Cache TYPE_LENGTH for future use. */
2904 TYPE_LENGTH (orig_type
) = TYPE_LENGTH (type
);
2909 /* Parse a type expression in the string [P..P+LENGTH). If an error
2910 occurs, silently return a void type. */
2912 static struct type
*
2913 safe_parse_type (struct gdbarch
*gdbarch
, char *p
, int length
)
2915 struct ui_file
*saved_gdb_stderr
;
2916 struct type
*type
= NULL
; /* Initialize to keep gcc happy. */
2918 /* Suppress error messages. */
2919 saved_gdb_stderr
= gdb_stderr
;
2920 gdb_stderr
= &null_stream
;
2922 /* Call parse_and_eval_type() without fear of longjmp()s. */
2925 type
= parse_and_eval_type (p
, length
);
2927 catch (const gdb_exception_error
&except
)
2929 type
= builtin_type (gdbarch
)->builtin_void
;
2932 /* Stop suppressing error messages. */
2933 gdb_stderr
= saved_gdb_stderr
;
2938 /* Ugly hack to convert method stubs into method types.
2940 He ain't kiddin'. This demangles the name of the method into a
2941 string including argument types, parses out each argument type,
2942 generates a string casting a zero to that type, evaluates the
2943 string, and stuffs the resulting type into an argtype vector!!!
2944 Then it knows the type of the whole function (including argument
2945 types for overloading), which info used to be in the stab's but was
2946 removed to hack back the space required for them. */
2949 check_stub_method (struct type
*type
, int method_id
, int signature_id
)
2951 struct gdbarch
*gdbarch
= get_type_arch (type
);
2953 char *mangled_name
= gdb_mangle_name (type
, method_id
, signature_id
);
2954 char *demangled_name
= gdb_demangle (mangled_name
,
2955 DMGL_PARAMS
| DMGL_ANSI
);
2956 char *argtypetext
, *p
;
2957 int depth
= 0, argcount
= 1;
2958 struct field
*argtypes
;
2961 /* Make sure we got back a function string that we can use. */
2963 p
= strchr (demangled_name
, '(');
2967 if (demangled_name
== NULL
|| p
== NULL
)
2968 error (_("Internal: Cannot demangle mangled name `%s'."),
2971 /* Now, read in the parameters that define this type. */
2976 if (*p
== '(' || *p
== '<')
2980 else if (*p
== ')' || *p
== '>')
2984 else if (*p
== ',' && depth
== 0)
2992 /* If we read one argument and it was ``void'', don't count it. */
2993 if (startswith (argtypetext
, "(void)"))
2996 /* We need one extra slot, for the THIS pointer. */
2998 argtypes
= (struct field
*)
2999 TYPE_ALLOC (type
, (argcount
+ 1) * sizeof (struct field
));
3002 /* Add THIS pointer for non-static methods. */
3003 f
= TYPE_FN_FIELDLIST1 (type
, method_id
);
3004 if (TYPE_FN_FIELD_STATIC_P (f
, signature_id
))
3008 argtypes
[0].type
= lookup_pointer_type (type
);
3012 if (*p
!= ')') /* () means no args, skip while. */
3017 if (depth
<= 0 && (*p
== ',' || *p
== ')'))
3019 /* Avoid parsing of ellipsis, they will be handled below.
3020 Also avoid ``void'' as above. */
3021 if (strncmp (argtypetext
, "...", p
- argtypetext
) != 0
3022 && strncmp (argtypetext
, "void", p
- argtypetext
) != 0)
3024 argtypes
[argcount
].type
=
3025 safe_parse_type (gdbarch
, argtypetext
, p
- argtypetext
);
3028 argtypetext
= p
+ 1;
3031 if (*p
== '(' || *p
== '<')
3035 else if (*p
== ')' || *p
== '>')
3044 TYPE_FN_FIELD_PHYSNAME (f
, signature_id
) = mangled_name
;
3046 /* Now update the old "stub" type into a real type. */
3047 mtype
= TYPE_FN_FIELD_TYPE (f
, signature_id
);
3048 /* MTYPE may currently be a function (TYPE_CODE_FUNC).
3049 We want a method (TYPE_CODE_METHOD). */
3050 smash_to_method_type (mtype
, type
, TYPE_TARGET_TYPE (mtype
),
3051 argtypes
, argcount
, p
[-2] == '.');
3052 TYPE_STUB (mtype
) = 0;
3053 TYPE_FN_FIELD_STUB (f
, signature_id
) = 0;
3055 xfree (demangled_name
);
3058 /* This is the external interface to check_stub_method, above. This
3059 function unstubs all of the signatures for TYPE's METHOD_ID method
3060 name. After calling this function TYPE_FN_FIELD_STUB will be
3061 cleared for each signature and TYPE_FN_FIELDLIST_NAME will be
3064 This function unfortunately can not die until stabs do. */
3067 check_stub_method_group (struct type
*type
, int method_id
)
3069 int len
= TYPE_FN_FIELDLIST_LENGTH (type
, method_id
);
3070 struct fn_field
*f
= TYPE_FN_FIELDLIST1 (type
, method_id
);
3072 for (int j
= 0; j
< len
; j
++)
3074 if (TYPE_FN_FIELD_STUB (f
, j
))
3075 check_stub_method (type
, method_id
, j
);
3079 /* Ensure it is in .rodata (if available) by working around GCC PR 44690. */
3080 const struct cplus_struct_type cplus_struct_default
= { };
3083 allocate_cplus_struct_type (struct type
*type
)
3085 if (HAVE_CPLUS_STRUCT (type
))
3086 /* Structure was already allocated. Nothing more to do. */
3089 TYPE_SPECIFIC_FIELD (type
) = TYPE_SPECIFIC_CPLUS_STUFF
;
3090 TYPE_RAW_CPLUS_SPECIFIC (type
) = (struct cplus_struct_type
*)
3091 TYPE_ALLOC (type
, sizeof (struct cplus_struct_type
));
3092 *(TYPE_RAW_CPLUS_SPECIFIC (type
)) = cplus_struct_default
;
3093 set_type_vptr_fieldno (type
, -1);
3096 const struct gnat_aux_type gnat_aux_default
=
3099 /* Set the TYPE's type-specific kind to TYPE_SPECIFIC_GNAT_STUFF,
3100 and allocate the associated gnat-specific data. The gnat-specific
3101 data is also initialized to gnat_aux_default. */
3104 allocate_gnat_aux_type (struct type
*type
)
3106 TYPE_SPECIFIC_FIELD (type
) = TYPE_SPECIFIC_GNAT_STUFF
;
3107 TYPE_GNAT_SPECIFIC (type
) = (struct gnat_aux_type
*)
3108 TYPE_ALLOC (type
, sizeof (struct gnat_aux_type
));
3109 *(TYPE_GNAT_SPECIFIC (type
)) = gnat_aux_default
;
3112 /* Helper function to initialize a newly allocated type. Set type code
3113 to CODE and initialize the type-specific fields accordingly. */
3116 set_type_code (struct type
*type
, enum type_code code
)
3118 type
->set_code (code
);
3122 case TYPE_CODE_STRUCT
:
3123 case TYPE_CODE_UNION
:
3124 case TYPE_CODE_NAMESPACE
:
3125 INIT_CPLUS_SPECIFIC (type
);
3128 TYPE_SPECIFIC_FIELD (type
) = TYPE_SPECIFIC_FLOATFORMAT
;
3130 case TYPE_CODE_FUNC
:
3131 INIT_FUNC_SPECIFIC (type
);
3136 /* Helper function to verify floating-point format and size.
3137 BIT is the type size in bits; if BIT equals -1, the size is
3138 determined by the floatformat. Returns size to be used. */
3141 verify_floatformat (int bit
, const struct floatformat
*floatformat
)
3143 gdb_assert (floatformat
!= NULL
);
3146 bit
= floatformat
->totalsize
;
3148 gdb_assert (bit
>= 0);
3149 gdb_assert (bit
>= floatformat
->totalsize
);
3154 /* Return the floating-point format for a floating-point variable of
3157 const struct floatformat
*
3158 floatformat_from_type (const struct type
*type
)
3160 gdb_assert (type
->code () == TYPE_CODE_FLT
);
3161 gdb_assert (TYPE_FLOATFORMAT (type
));
3162 return TYPE_FLOATFORMAT (type
);
3165 /* Helper function to initialize the standard scalar types.
3167 If NAME is non-NULL, then it is used to initialize the type name.
3168 Note that NAME is not copied; it is required to have a lifetime at
3169 least as long as OBJFILE. */
3172 init_type (struct objfile
*objfile
, enum type_code code
, int bit
,
3177 type
= alloc_type (objfile
);
3178 set_type_code (type
, code
);
3179 gdb_assert ((bit
% TARGET_CHAR_BIT
) == 0);
3180 TYPE_LENGTH (type
) = bit
/ TARGET_CHAR_BIT
;
3181 type
->set_name (name
);
3186 /* Allocate a TYPE_CODE_ERROR type structure associated with OBJFILE,
3187 to use with variables that have no debug info. NAME is the type
3190 static struct type
*
3191 init_nodebug_var_type (struct objfile
*objfile
, const char *name
)
3193 return init_type (objfile
, TYPE_CODE_ERROR
, 0, name
);
3196 /* Allocate a TYPE_CODE_INT type structure associated with OBJFILE.
3197 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
3198 the type's TYPE_UNSIGNED flag. NAME is the type name. */
3201 init_integer_type (struct objfile
*objfile
,
3202 int bit
, int unsigned_p
, const char *name
)
3206 t
= init_type (objfile
, TYPE_CODE_INT
, bit
, name
);
3208 TYPE_UNSIGNED (t
) = 1;
3213 /* Allocate a TYPE_CODE_CHAR type structure associated with OBJFILE.
3214 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
3215 the type's TYPE_UNSIGNED flag. NAME is the type name. */
3218 init_character_type (struct objfile
*objfile
,
3219 int bit
, int unsigned_p
, const char *name
)
3223 t
= init_type (objfile
, TYPE_CODE_CHAR
, bit
, name
);
3225 TYPE_UNSIGNED (t
) = 1;
3230 /* Allocate a TYPE_CODE_BOOL type structure associated with OBJFILE.
3231 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
3232 the type's TYPE_UNSIGNED flag. NAME is the type name. */
3235 init_boolean_type (struct objfile
*objfile
,
3236 int bit
, int unsigned_p
, const char *name
)
3240 t
= init_type (objfile
, TYPE_CODE_BOOL
, bit
, name
);
3242 TYPE_UNSIGNED (t
) = 1;
3247 /* Allocate a TYPE_CODE_FLT type structure associated with OBJFILE.
3248 BIT is the type size in bits; if BIT equals -1, the size is
3249 determined by the floatformat. NAME is the type name. Set the
3250 TYPE_FLOATFORMAT from FLOATFORMATS. BYTE_ORDER is the byte order
3251 to use. If it is BFD_ENDIAN_UNKNOWN (the default), then the byte
3252 order of the objfile's architecture is used. */
3255 init_float_type (struct objfile
*objfile
,
3256 int bit
, const char *name
,
3257 const struct floatformat
**floatformats
,
3258 enum bfd_endian byte_order
)
3260 if (byte_order
== BFD_ENDIAN_UNKNOWN
)
3262 struct gdbarch
*gdbarch
= objfile
->arch ();
3263 byte_order
= gdbarch_byte_order (gdbarch
);
3265 const struct floatformat
*fmt
= floatformats
[byte_order
];
3268 bit
= verify_floatformat (bit
, fmt
);
3269 t
= init_type (objfile
, TYPE_CODE_FLT
, bit
, name
);
3270 TYPE_FLOATFORMAT (t
) = fmt
;
3275 /* Allocate a TYPE_CODE_DECFLOAT type structure associated with OBJFILE.
3276 BIT is the type size in bits. NAME is the type name. */
3279 init_decfloat_type (struct objfile
*objfile
, int bit
, const char *name
)
3283 t
= init_type (objfile
, TYPE_CODE_DECFLOAT
, bit
, name
);
3287 /* Allocate a TYPE_CODE_COMPLEX type structure. NAME is the type
3288 name. TARGET_TYPE is the component type. */
3291 init_complex_type (const char *name
, struct type
*target_type
)
3295 gdb_assert (target_type
->code () == TYPE_CODE_INT
3296 || target_type
->code () == TYPE_CODE_FLT
);
3298 if (TYPE_MAIN_TYPE (target_type
)->flds_bnds
.complex_type
== nullptr)
3300 if (name
== nullptr)
3303 = (char *) TYPE_ALLOC (target_type
,
3304 strlen (target_type
->name ())
3305 + strlen ("_Complex ") + 1);
3306 strcpy (new_name
, "_Complex ");
3307 strcat (new_name
, target_type
->name ());
3311 t
= alloc_type_copy (target_type
);
3312 set_type_code (t
, TYPE_CODE_COMPLEX
);
3313 TYPE_LENGTH (t
) = 2 * TYPE_LENGTH (target_type
);
3316 TYPE_TARGET_TYPE (t
) = target_type
;
3317 TYPE_MAIN_TYPE (target_type
)->flds_bnds
.complex_type
= t
;
3320 return TYPE_MAIN_TYPE (target_type
)->flds_bnds
.complex_type
;
3323 /* Allocate a TYPE_CODE_PTR type structure associated with OBJFILE.
3324 BIT is the pointer type size in bits. NAME is the type name.
3325 TARGET_TYPE is the pointer target type. Always sets the pointer type's
3326 TYPE_UNSIGNED flag. */
3329 init_pointer_type (struct objfile
*objfile
,
3330 int bit
, const char *name
, struct type
*target_type
)
3334 t
= init_type (objfile
, TYPE_CODE_PTR
, bit
, name
);
3335 TYPE_TARGET_TYPE (t
) = target_type
;
3336 TYPE_UNSIGNED (t
) = 1;
3340 /* See gdbtypes.h. */
3343 type_raw_align (struct type
*type
)
3345 if (type
->align_log2
!= 0)
3346 return 1 << (type
->align_log2
- 1);
3350 /* See gdbtypes.h. */
3353 type_align (struct type
*type
)
3355 /* Check alignment provided in the debug information. */
3356 unsigned raw_align
= type_raw_align (type
);
3360 /* Allow the architecture to provide an alignment. */
3361 struct gdbarch
*arch
= get_type_arch (type
);
3362 ULONGEST align
= gdbarch_type_align (arch
, type
);
3366 switch (type
->code ())
3369 case TYPE_CODE_FUNC
:
3370 case TYPE_CODE_FLAGS
:
3372 case TYPE_CODE_RANGE
:
3374 case TYPE_CODE_ENUM
:
3376 case TYPE_CODE_RVALUE_REF
:
3377 case TYPE_CODE_CHAR
:
3378 case TYPE_CODE_BOOL
:
3379 case TYPE_CODE_DECFLOAT
:
3380 case TYPE_CODE_METHODPTR
:
3381 case TYPE_CODE_MEMBERPTR
:
3382 align
= type_length_units (check_typedef (type
));
3385 case TYPE_CODE_ARRAY
:
3386 case TYPE_CODE_COMPLEX
:
3387 case TYPE_CODE_TYPEDEF
:
3388 align
= type_align (TYPE_TARGET_TYPE (type
));
3391 case TYPE_CODE_STRUCT
:
3392 case TYPE_CODE_UNION
:
3394 int number_of_non_static_fields
= 0;
3395 for (unsigned i
= 0; i
< type
->num_fields (); ++i
)
3397 if (!field_is_static (&type
->field (i
)))
3399 number_of_non_static_fields
++;
3400 ULONGEST f_align
= type_align (TYPE_FIELD_TYPE (type
, i
));
3403 /* Don't pretend we know something we don't. */
3407 if (f_align
> align
)
3411 /* A struct with no fields, or with only static fields has an
3413 if (number_of_non_static_fields
== 0)
3419 case TYPE_CODE_STRING
:
3420 /* Not sure what to do here, and these can't appear in C or C++
3424 case TYPE_CODE_VOID
:
3428 case TYPE_CODE_ERROR
:
3429 case TYPE_CODE_METHOD
:
3434 if ((align
& (align
- 1)) != 0)
3436 /* Not a power of 2, so pass. */
3443 /* See gdbtypes.h. */
3446 set_type_align (struct type
*type
, ULONGEST align
)
3448 /* Must be a power of 2. Zero is ok. */
3449 gdb_assert ((align
& (align
- 1)) == 0);
3451 unsigned result
= 0;
3458 if (result
>= (1 << TYPE_ALIGN_BITS
))
3461 type
->align_log2
= result
;
3466 /* Queries on types. */
3469 can_dereference (struct type
*t
)
3471 /* FIXME: Should we return true for references as well as
3473 t
= check_typedef (t
);
3476 && t
->code () == TYPE_CODE_PTR
3477 && TYPE_TARGET_TYPE (t
)->code () != TYPE_CODE_VOID
);
3481 is_integral_type (struct type
*t
)
3483 t
= check_typedef (t
);
3486 && ((t
->code () == TYPE_CODE_INT
)
3487 || (t
->code () == TYPE_CODE_ENUM
)
3488 || (t
->code () == TYPE_CODE_FLAGS
)
3489 || (t
->code () == TYPE_CODE_CHAR
)
3490 || (t
->code () == TYPE_CODE_RANGE
)
3491 || (t
->code () == TYPE_CODE_BOOL
)));
3495 is_floating_type (struct type
*t
)
3497 t
= check_typedef (t
);
3500 && ((t
->code () == TYPE_CODE_FLT
)
3501 || (t
->code () == TYPE_CODE_DECFLOAT
)));
3504 /* Return true if TYPE is scalar. */
3507 is_scalar_type (struct type
*type
)
3509 type
= check_typedef (type
);
3511 switch (type
->code ())
3513 case TYPE_CODE_ARRAY
:
3514 case TYPE_CODE_STRUCT
:
3515 case TYPE_CODE_UNION
:
3517 case TYPE_CODE_STRING
:
3524 /* Return true if T is scalar, or a composite type which in practice has
3525 the memory layout of a scalar type. E.g., an array or struct with only
3526 one scalar element inside it, or a union with only scalar elements. */
3529 is_scalar_type_recursive (struct type
*t
)
3531 t
= check_typedef (t
);
3533 if (is_scalar_type (t
))
3535 /* Are we dealing with an array or string of known dimensions? */
3536 else if ((t
->code () == TYPE_CODE_ARRAY
3537 || t
->code () == TYPE_CODE_STRING
) && t
->num_fields () == 1
3538 && TYPE_INDEX_TYPE(t
)->code () == TYPE_CODE_RANGE
)
3540 LONGEST low_bound
, high_bound
;
3541 struct type
*elt_type
= check_typedef (TYPE_TARGET_TYPE (t
));
3543 get_discrete_bounds (TYPE_INDEX_TYPE (t
), &low_bound
, &high_bound
);
3545 return high_bound
== low_bound
&& is_scalar_type_recursive (elt_type
);
3547 /* Are we dealing with a struct with one element? */
3548 else if (t
->code () == TYPE_CODE_STRUCT
&& t
->num_fields () == 1)
3549 return is_scalar_type_recursive (TYPE_FIELD_TYPE (t
, 0));
3550 else if (t
->code () == TYPE_CODE_UNION
)
3552 int i
, n
= t
->num_fields ();
3554 /* If all elements of the union are scalar, then the union is scalar. */
3555 for (i
= 0; i
< n
; i
++)
3556 if (!is_scalar_type_recursive (TYPE_FIELD_TYPE (t
, i
)))
3565 /* Return true is T is a class or a union. False otherwise. */
3568 class_or_union_p (const struct type
*t
)
3570 return (t
->code () == TYPE_CODE_STRUCT
3571 || t
->code () == TYPE_CODE_UNION
);
3574 /* A helper function which returns true if types A and B represent the
3575 "same" class type. This is true if the types have the same main
3576 type, or the same name. */
3579 class_types_same_p (const struct type
*a
, const struct type
*b
)
3581 return (TYPE_MAIN_TYPE (a
) == TYPE_MAIN_TYPE (b
)
3582 || (a
->name () && b
->name ()
3583 && !strcmp (a
->name (), b
->name ())));
3586 /* If BASE is an ancestor of DCLASS return the distance between them.
3587 otherwise return -1;
3591 class B: public A {};
3592 class C: public B {};
3595 distance_to_ancestor (A, A, 0) = 0
3596 distance_to_ancestor (A, B, 0) = 1
3597 distance_to_ancestor (A, C, 0) = 2
3598 distance_to_ancestor (A, D, 0) = 3
3600 If PUBLIC is 1 then only public ancestors are considered,
3601 and the function returns the distance only if BASE is a public ancestor
3605 distance_to_ancestor (A, D, 1) = -1. */
3608 distance_to_ancestor (struct type
*base
, struct type
*dclass
, int is_public
)
3613 base
= check_typedef (base
);
3614 dclass
= check_typedef (dclass
);
3616 if (class_types_same_p (base
, dclass
))
3619 for (i
= 0; i
< TYPE_N_BASECLASSES (dclass
); i
++)
3621 if (is_public
&& ! BASETYPE_VIA_PUBLIC (dclass
, i
))
3624 d
= distance_to_ancestor (base
, TYPE_BASECLASS (dclass
, i
), is_public
);
3632 /* Check whether BASE is an ancestor or base class or DCLASS
3633 Return 1 if so, and 0 if not.
3634 Note: If BASE and DCLASS are of the same type, this function
3635 will return 1. So for some class A, is_ancestor (A, A) will
3639 is_ancestor (struct type
*base
, struct type
*dclass
)
3641 return distance_to_ancestor (base
, dclass
, 0) >= 0;
3644 /* Like is_ancestor, but only returns true when BASE is a public
3645 ancestor of DCLASS. */
3648 is_public_ancestor (struct type
*base
, struct type
*dclass
)
3650 return distance_to_ancestor (base
, dclass
, 1) >= 0;
3653 /* A helper function for is_unique_ancestor. */
3656 is_unique_ancestor_worker (struct type
*base
, struct type
*dclass
,
3658 const gdb_byte
*valaddr
, int embedded_offset
,
3659 CORE_ADDR address
, struct value
*val
)
3663 base
= check_typedef (base
);
3664 dclass
= check_typedef (dclass
);
3666 for (i
= 0; i
< TYPE_N_BASECLASSES (dclass
) && count
< 2; ++i
)
3671 iter
= check_typedef (TYPE_BASECLASS (dclass
, i
));
3673 this_offset
= baseclass_offset (dclass
, i
, valaddr
, embedded_offset
,
3676 if (class_types_same_p (base
, iter
))
3678 /* If this is the first subclass, set *OFFSET and set count
3679 to 1. Otherwise, if this is at the same offset as
3680 previous instances, do nothing. Otherwise, increment
3684 *offset
= this_offset
;
3687 else if (this_offset
== *offset
)
3695 count
+= is_unique_ancestor_worker (base
, iter
, offset
,
3697 embedded_offset
+ this_offset
,
3704 /* Like is_ancestor, but only returns true if BASE is a unique base
3705 class of the type of VAL. */
3708 is_unique_ancestor (struct type
*base
, struct value
*val
)
3712 return is_unique_ancestor_worker (base
, value_type (val
), &offset
,
3713 value_contents_for_printing (val
),
3714 value_embedded_offset (val
),
3715 value_address (val
), val
) == 1;
3718 /* See gdbtypes.h. */
3721 type_byte_order (const struct type
*type
)
3723 bfd_endian byteorder
= gdbarch_byte_order (get_type_arch (type
));
3724 if (TYPE_ENDIANITY_NOT_DEFAULT (type
))
3726 if (byteorder
== BFD_ENDIAN_BIG
)
3727 return BFD_ENDIAN_LITTLE
;
3730 gdb_assert (byteorder
== BFD_ENDIAN_LITTLE
);
3731 return BFD_ENDIAN_BIG
;
3739 /* Overload resolution. */
3741 /* Return the sum of the rank of A with the rank of B. */
3744 sum_ranks (struct rank a
, struct rank b
)
3747 c
.rank
= a
.rank
+ b
.rank
;
3748 c
.subrank
= a
.subrank
+ b
.subrank
;
3752 /* Compare rank A and B and return:
3754 1 if a is better than b
3755 -1 if b is better than a. */
3758 compare_ranks (struct rank a
, struct rank b
)
3760 if (a
.rank
== b
.rank
)
3762 if (a
.subrank
== b
.subrank
)
3764 if (a
.subrank
< b
.subrank
)
3766 if (a
.subrank
> b
.subrank
)
3770 if (a
.rank
< b
.rank
)
3773 /* a.rank > b.rank */
3777 /* Functions for overload resolution begin here. */
3779 /* Compare two badness vectors A and B and return the result.
3780 0 => A and B are identical
3781 1 => A and B are incomparable
3782 2 => A is better than B
3783 3 => A is worse than B */
3786 compare_badness (const badness_vector
&a
, const badness_vector
&b
)
3790 short found_pos
= 0; /* any positives in c? */
3791 short found_neg
= 0; /* any negatives in c? */
3793 /* differing sizes => incomparable */
3794 if (a
.size () != b
.size ())
3797 /* Subtract b from a */
3798 for (i
= 0; i
< a
.size (); i
++)
3800 tmp
= compare_ranks (b
[i
], a
[i
]);
3810 return 1; /* incomparable */
3812 return 3; /* A > B */
3818 return 2; /* A < B */
3820 return 0; /* A == B */
3824 /* Rank a function by comparing its parameter types (PARMS), to the
3825 types of an argument list (ARGS). Return the badness vector. This
3826 has ARGS.size() + 1 entries. */
3829 rank_function (gdb::array_view
<type
*> parms
,
3830 gdb::array_view
<value
*> args
)
3832 /* add 1 for the length-match rank. */
3834 bv
.reserve (1 + args
.size ());
3836 /* First compare the lengths of the supplied lists.
3837 If there is a mismatch, set it to a high value. */
3839 /* pai/1997-06-03 FIXME: when we have debug info about default
3840 arguments and ellipsis parameter lists, we should consider those
3841 and rank the length-match more finely. */
3843 bv
.push_back ((args
.size () != parms
.size ())
3844 ? LENGTH_MISMATCH_BADNESS
3845 : EXACT_MATCH_BADNESS
);
3847 /* Now rank all the parameters of the candidate function. */
3848 size_t min_len
= std::min (parms
.size (), args
.size ());
3850 for (size_t i
= 0; i
< min_len
; i
++)
3851 bv
.push_back (rank_one_type (parms
[i
], value_type (args
[i
]),
3854 /* If more arguments than parameters, add dummy entries. */
3855 for (size_t i
= min_len
; i
< args
.size (); i
++)
3856 bv
.push_back (TOO_FEW_PARAMS_BADNESS
);
3861 /* Compare the names of two integer types, assuming that any sign
3862 qualifiers have been checked already. We do it this way because
3863 there may be an "int" in the name of one of the types. */
3866 integer_types_same_name_p (const char *first
, const char *second
)
3868 int first_p
, second_p
;
3870 /* If both are shorts, return 1; if neither is a short, keep
3872 first_p
= (strstr (first
, "short") != NULL
);
3873 second_p
= (strstr (second
, "short") != NULL
);
3874 if (first_p
&& second_p
)
3876 if (first_p
|| second_p
)
3879 /* Likewise for long. */
3880 first_p
= (strstr (first
, "long") != NULL
);
3881 second_p
= (strstr (second
, "long") != NULL
);
3882 if (first_p
&& second_p
)
3884 if (first_p
|| second_p
)
3887 /* Likewise for char. */
3888 first_p
= (strstr (first
, "char") != NULL
);
3889 second_p
= (strstr (second
, "char") != NULL
);
3890 if (first_p
&& second_p
)
3892 if (first_p
|| second_p
)
3895 /* They must both be ints. */
3899 /* Compares type A to type B. Returns true if they represent the same
3900 type, false otherwise. */
3903 types_equal (struct type
*a
, struct type
*b
)
3905 /* Identical type pointers. */
3906 /* However, this still doesn't catch all cases of same type for b
3907 and a. The reason is that builtin types are different from
3908 the same ones constructed from the object. */
3912 /* Resolve typedefs */
3913 if (a
->code () == TYPE_CODE_TYPEDEF
)
3914 a
= check_typedef (a
);
3915 if (b
->code () == TYPE_CODE_TYPEDEF
)
3916 b
= check_typedef (b
);
3918 /* If after resolving typedefs a and b are not of the same type
3919 code then they are not equal. */
3920 if (a
->code () != b
->code ())
3923 /* If a and b are both pointers types or both reference types then
3924 they are equal of the same type iff the objects they refer to are
3925 of the same type. */
3926 if (a
->code () == TYPE_CODE_PTR
3927 || a
->code () == TYPE_CODE_REF
)
3928 return types_equal (TYPE_TARGET_TYPE (a
),
3929 TYPE_TARGET_TYPE (b
));
3931 /* Well, damnit, if the names are exactly the same, I'll say they
3932 are exactly the same. This happens when we generate method
3933 stubs. The types won't point to the same address, but they
3934 really are the same. */
3936 if (a
->name () && b
->name ()
3937 && strcmp (a
->name (), b
->name ()) == 0)
3940 /* Check if identical after resolving typedefs. */
3944 /* Two function types are equal if their argument and return types
3946 if (a
->code () == TYPE_CODE_FUNC
)
3950 if (a
->num_fields () != b
->num_fields ())
3953 if (!types_equal (TYPE_TARGET_TYPE (a
), TYPE_TARGET_TYPE (b
)))
3956 for (i
= 0; i
< a
->num_fields (); ++i
)
3957 if (!types_equal (TYPE_FIELD_TYPE (a
, i
), TYPE_FIELD_TYPE (b
, i
)))
3966 /* Deep comparison of types. */
3968 /* An entry in the type-equality bcache. */
3970 struct type_equality_entry
3972 type_equality_entry (struct type
*t1
, struct type
*t2
)
3978 struct type
*type1
, *type2
;
3981 /* A helper function to compare two strings. Returns true if they are
3982 the same, false otherwise. Handles NULLs properly. */
3985 compare_maybe_null_strings (const char *s
, const char *t
)
3987 if (s
== NULL
|| t
== NULL
)
3989 return strcmp (s
, t
) == 0;
3992 /* A helper function for check_types_worklist that checks two types for
3993 "deep" equality. Returns true if the types are considered the
3994 same, false otherwise. */
3997 check_types_equal (struct type
*type1
, struct type
*type2
,
3998 std::vector
<type_equality_entry
> *worklist
)
4000 type1
= check_typedef (type1
);
4001 type2
= check_typedef (type2
);
4006 if (type1
->code () != type2
->code ()
4007 || TYPE_LENGTH (type1
) != TYPE_LENGTH (type2
)
4008 || TYPE_UNSIGNED (type1
) != TYPE_UNSIGNED (type2
)
4009 || TYPE_NOSIGN (type1
) != TYPE_NOSIGN (type2
)
4010 || TYPE_ENDIANITY_NOT_DEFAULT (type1
) != TYPE_ENDIANITY_NOT_DEFAULT (type2
)
4011 || TYPE_VARARGS (type1
) != TYPE_VARARGS (type2
)
4012 || TYPE_VECTOR (type1
) != TYPE_VECTOR (type2
)
4013 || TYPE_NOTTEXT (type1
) != TYPE_NOTTEXT (type2
)
4014 || TYPE_INSTANCE_FLAGS (type1
) != TYPE_INSTANCE_FLAGS (type2
)
4015 || type1
->num_fields () != type2
->num_fields ())
4018 if (!compare_maybe_null_strings (type1
->name (), type2
->name ()))
4020 if (!compare_maybe_null_strings (type1
->name (), type2
->name ()))
4023 if (type1
->code () == TYPE_CODE_RANGE
)
4025 if (*TYPE_RANGE_DATA (type1
) != *TYPE_RANGE_DATA (type2
))
4032 for (i
= 0; i
< type1
->num_fields (); ++i
)
4034 const struct field
*field1
= &type1
->field (i
);
4035 const struct field
*field2
= &type2
->field (i
);
4037 if (FIELD_ARTIFICIAL (*field1
) != FIELD_ARTIFICIAL (*field2
)
4038 || FIELD_BITSIZE (*field1
) != FIELD_BITSIZE (*field2
)
4039 || FIELD_LOC_KIND (*field1
) != FIELD_LOC_KIND (*field2
))
4041 if (!compare_maybe_null_strings (FIELD_NAME (*field1
),
4042 FIELD_NAME (*field2
)))
4044 switch (FIELD_LOC_KIND (*field1
))
4046 case FIELD_LOC_KIND_BITPOS
:
4047 if (FIELD_BITPOS (*field1
) != FIELD_BITPOS (*field2
))
4050 case FIELD_LOC_KIND_ENUMVAL
:
4051 if (FIELD_ENUMVAL (*field1
) != FIELD_ENUMVAL (*field2
))
4054 case FIELD_LOC_KIND_PHYSADDR
:
4055 if (FIELD_STATIC_PHYSADDR (*field1
)
4056 != FIELD_STATIC_PHYSADDR (*field2
))
4059 case FIELD_LOC_KIND_PHYSNAME
:
4060 if (!compare_maybe_null_strings (FIELD_STATIC_PHYSNAME (*field1
),
4061 FIELD_STATIC_PHYSNAME (*field2
)))
4064 case FIELD_LOC_KIND_DWARF_BLOCK
:
4066 struct dwarf2_locexpr_baton
*block1
, *block2
;
4068 block1
= FIELD_DWARF_BLOCK (*field1
);
4069 block2
= FIELD_DWARF_BLOCK (*field2
);
4070 if (block1
->per_cu
!= block2
->per_cu
4071 || block1
->size
!= block2
->size
4072 || memcmp (block1
->data
, block2
->data
, block1
->size
) != 0)
4077 internal_error (__FILE__
, __LINE__
, _("Unsupported field kind "
4078 "%d by check_types_equal"),
4079 FIELD_LOC_KIND (*field1
));
4082 worklist
->emplace_back (FIELD_TYPE (*field1
), FIELD_TYPE (*field2
));
4086 if (TYPE_TARGET_TYPE (type1
) != NULL
)
4088 if (TYPE_TARGET_TYPE (type2
) == NULL
)
4091 worklist
->emplace_back (TYPE_TARGET_TYPE (type1
),
4092 TYPE_TARGET_TYPE (type2
));
4094 else if (TYPE_TARGET_TYPE (type2
) != NULL
)
4100 /* Check types on a worklist for equality. Returns false if any pair
4101 is not equal, true if they are all considered equal. */
4104 check_types_worklist (std::vector
<type_equality_entry
> *worklist
,
4107 while (!worklist
->empty ())
4111 struct type_equality_entry entry
= std::move (worklist
->back ());
4112 worklist
->pop_back ();
4114 /* If the type pair has already been visited, we know it is
4116 cache
->insert (&entry
, sizeof (entry
), &added
);
4120 if (!check_types_equal (entry
.type1
, entry
.type2
, worklist
))
4127 /* Return true if types TYPE1 and TYPE2 are equal, as determined by a
4128 "deep comparison". Otherwise return false. */
4131 types_deeply_equal (struct type
*type1
, struct type
*type2
)
4133 std::vector
<type_equality_entry
> worklist
;
4135 gdb_assert (type1
!= NULL
&& type2
!= NULL
);
4137 /* Early exit for the simple case. */
4141 gdb::bcache
cache (nullptr, nullptr);
4142 worklist
.emplace_back (type1
, type2
);
4143 return check_types_worklist (&worklist
, &cache
);
4146 /* Allocated status of type TYPE. Return zero if type TYPE is allocated.
4147 Otherwise return one. */
4150 type_not_allocated (const struct type
*type
)
4152 struct dynamic_prop
*prop
= TYPE_ALLOCATED_PROP (type
);
4154 return (prop
&& TYPE_DYN_PROP_KIND (prop
) == PROP_CONST
4155 && !TYPE_DYN_PROP_ADDR (prop
));
4158 /* Associated status of type TYPE. Return zero if type TYPE is associated.
4159 Otherwise return one. */
4162 type_not_associated (const struct type
*type
)
4164 struct dynamic_prop
*prop
= TYPE_ASSOCIATED_PROP (type
);
4166 return (prop
&& TYPE_DYN_PROP_KIND (prop
) == PROP_CONST
4167 && !TYPE_DYN_PROP_ADDR (prop
));
4170 /* rank_one_type helper for when PARM's type code is TYPE_CODE_PTR. */
4173 rank_one_type_parm_ptr (struct type
*parm
, struct type
*arg
, struct value
*value
)
4175 struct rank rank
= {0,0};
4177 switch (arg
->code ())
4181 /* Allowed pointer conversions are:
4182 (a) pointer to void-pointer conversion. */
4183 if (TYPE_TARGET_TYPE (parm
)->code () == TYPE_CODE_VOID
)
4184 return VOID_PTR_CONVERSION_BADNESS
;
4186 /* (b) pointer to ancestor-pointer conversion. */
4187 rank
.subrank
= distance_to_ancestor (TYPE_TARGET_TYPE (parm
),
4188 TYPE_TARGET_TYPE (arg
),
4190 if (rank
.subrank
>= 0)
4191 return sum_ranks (BASE_PTR_CONVERSION_BADNESS
, rank
);
4193 return INCOMPATIBLE_TYPE_BADNESS
;
4194 case TYPE_CODE_ARRAY
:
4196 struct type
*t1
= TYPE_TARGET_TYPE (parm
);
4197 struct type
*t2
= TYPE_TARGET_TYPE (arg
);
4199 if (types_equal (t1
, t2
))
4201 /* Make sure they are CV equal. */
4202 if (TYPE_CONST (t1
) != TYPE_CONST (t2
))
4203 rank
.subrank
|= CV_CONVERSION_CONST
;
4204 if (TYPE_VOLATILE (t1
) != TYPE_VOLATILE (t2
))
4205 rank
.subrank
|= CV_CONVERSION_VOLATILE
;
4206 if (rank
.subrank
!= 0)
4207 return sum_ranks (CV_CONVERSION_BADNESS
, rank
);
4208 return EXACT_MATCH_BADNESS
;
4210 return INCOMPATIBLE_TYPE_BADNESS
;
4212 case TYPE_CODE_FUNC
:
4213 return rank_one_type (TYPE_TARGET_TYPE (parm
), arg
, NULL
);
4215 if (value
!= NULL
&& value_type (value
)->code () == TYPE_CODE_INT
)
4217 if (value_as_long (value
) == 0)
4219 /* Null pointer conversion: allow it to be cast to a pointer.
4220 [4.10.1 of C++ standard draft n3290] */
4221 return NULL_POINTER_CONVERSION_BADNESS
;
4225 /* If type checking is disabled, allow the conversion. */
4226 if (!strict_type_checking
)
4227 return NS_INTEGER_POINTER_CONVERSION_BADNESS
;
4231 case TYPE_CODE_ENUM
:
4232 case TYPE_CODE_FLAGS
:
4233 case TYPE_CODE_CHAR
:
4234 case TYPE_CODE_RANGE
:
4235 case TYPE_CODE_BOOL
:
4237 return INCOMPATIBLE_TYPE_BADNESS
;
4241 /* rank_one_type helper for when PARM's type code is TYPE_CODE_ARRAY. */
4244 rank_one_type_parm_array (struct type
*parm
, struct type
*arg
, struct value
*value
)
4246 switch (arg
->code ())
4249 case TYPE_CODE_ARRAY
:
4250 return rank_one_type (TYPE_TARGET_TYPE (parm
),
4251 TYPE_TARGET_TYPE (arg
), NULL
);
4253 return INCOMPATIBLE_TYPE_BADNESS
;
4257 /* rank_one_type helper for when PARM's type code is TYPE_CODE_FUNC. */
4260 rank_one_type_parm_func (struct type
*parm
, struct type
*arg
, struct value
*value
)
4262 switch (arg
->code ())
4264 case TYPE_CODE_PTR
: /* funcptr -> func */
4265 return rank_one_type (parm
, TYPE_TARGET_TYPE (arg
), NULL
);
4267 return INCOMPATIBLE_TYPE_BADNESS
;
4271 /* rank_one_type helper for when PARM's type code is TYPE_CODE_INT. */
4274 rank_one_type_parm_int (struct type
*parm
, struct type
*arg
, struct value
*value
)
4276 switch (arg
->code ())
4279 if (TYPE_LENGTH (arg
) == TYPE_LENGTH (parm
))
4281 /* Deal with signed, unsigned, and plain chars and
4282 signed and unsigned ints. */
4283 if (TYPE_NOSIGN (parm
))
4285 /* This case only for character types. */
4286 if (TYPE_NOSIGN (arg
))
4287 return EXACT_MATCH_BADNESS
; /* plain char -> plain char */
4288 else /* signed/unsigned char -> plain char */
4289 return INTEGER_CONVERSION_BADNESS
;
4291 else if (TYPE_UNSIGNED (parm
))
4293 if (TYPE_UNSIGNED (arg
))
4295 /* unsigned int -> unsigned int, or
4296 unsigned long -> unsigned long */
4297 if (integer_types_same_name_p (parm
->name (),
4299 return EXACT_MATCH_BADNESS
;
4300 else if (integer_types_same_name_p (arg
->name (),
4302 && integer_types_same_name_p (parm
->name (),
4304 /* unsigned int -> unsigned long */
4305 return INTEGER_PROMOTION_BADNESS
;
4307 /* unsigned long -> unsigned int */
4308 return INTEGER_CONVERSION_BADNESS
;
4312 if (integer_types_same_name_p (arg
->name (),
4314 && integer_types_same_name_p (parm
->name (),
4316 /* signed long -> unsigned int */
4317 return INTEGER_CONVERSION_BADNESS
;
4319 /* signed int/long -> unsigned int/long */
4320 return INTEGER_CONVERSION_BADNESS
;
4323 else if (!TYPE_NOSIGN (arg
) && !TYPE_UNSIGNED (arg
))
4325 if (integer_types_same_name_p (parm
->name (),
4327 return EXACT_MATCH_BADNESS
;
4328 else if (integer_types_same_name_p (arg
->name (),
4330 && integer_types_same_name_p (parm
->name (),
4332 return INTEGER_PROMOTION_BADNESS
;
4334 return INTEGER_CONVERSION_BADNESS
;
4337 return INTEGER_CONVERSION_BADNESS
;
4339 else if (TYPE_LENGTH (arg
) < TYPE_LENGTH (parm
))
4340 return INTEGER_PROMOTION_BADNESS
;
4342 return INTEGER_CONVERSION_BADNESS
;
4343 case TYPE_CODE_ENUM
:
4344 case TYPE_CODE_FLAGS
:
4345 case TYPE_CODE_CHAR
:
4346 case TYPE_CODE_RANGE
:
4347 case TYPE_CODE_BOOL
:
4348 if (TYPE_DECLARED_CLASS (arg
))
4349 return INCOMPATIBLE_TYPE_BADNESS
;
4350 return INTEGER_PROMOTION_BADNESS
;
4352 return INT_FLOAT_CONVERSION_BADNESS
;
4354 return NS_POINTER_CONVERSION_BADNESS
;
4356 return INCOMPATIBLE_TYPE_BADNESS
;
4360 /* rank_one_type helper for when PARM's type code is TYPE_CODE_ENUM. */
4363 rank_one_type_parm_enum (struct type
*parm
, struct type
*arg
, struct value
*value
)
4365 switch (arg
->code ())
4368 case TYPE_CODE_CHAR
:
4369 case TYPE_CODE_RANGE
:
4370 case TYPE_CODE_BOOL
:
4371 case TYPE_CODE_ENUM
:
4372 if (TYPE_DECLARED_CLASS (parm
) || TYPE_DECLARED_CLASS (arg
))
4373 return INCOMPATIBLE_TYPE_BADNESS
;
4374 return INTEGER_CONVERSION_BADNESS
;
4376 return INT_FLOAT_CONVERSION_BADNESS
;
4378 return INCOMPATIBLE_TYPE_BADNESS
;
4382 /* rank_one_type helper for when PARM's type code is TYPE_CODE_CHAR. */
4385 rank_one_type_parm_char (struct type
*parm
, struct type
*arg
, struct value
*value
)
4387 switch (arg
->code ())
4389 case TYPE_CODE_RANGE
:
4390 case TYPE_CODE_BOOL
:
4391 case TYPE_CODE_ENUM
:
4392 if (TYPE_DECLARED_CLASS (arg
))
4393 return INCOMPATIBLE_TYPE_BADNESS
;
4394 return INTEGER_CONVERSION_BADNESS
;
4396 return INT_FLOAT_CONVERSION_BADNESS
;
4398 if (TYPE_LENGTH (arg
) > TYPE_LENGTH (parm
))
4399 return INTEGER_CONVERSION_BADNESS
;
4400 else if (TYPE_LENGTH (arg
) < TYPE_LENGTH (parm
))
4401 return INTEGER_PROMOTION_BADNESS
;
4403 case TYPE_CODE_CHAR
:
4404 /* Deal with signed, unsigned, and plain chars for C++ and
4405 with int cases falling through from previous case. */
4406 if (TYPE_NOSIGN (parm
))
4408 if (TYPE_NOSIGN (arg
))
4409 return EXACT_MATCH_BADNESS
;
4411 return INTEGER_CONVERSION_BADNESS
;
4413 else if (TYPE_UNSIGNED (parm
))
4415 if (TYPE_UNSIGNED (arg
))
4416 return EXACT_MATCH_BADNESS
;
4418 return INTEGER_PROMOTION_BADNESS
;
4420 else if (!TYPE_NOSIGN (arg
) && !TYPE_UNSIGNED (arg
))
4421 return EXACT_MATCH_BADNESS
;
4423 return INTEGER_CONVERSION_BADNESS
;
4425 return INCOMPATIBLE_TYPE_BADNESS
;
4429 /* rank_one_type helper for when PARM's type code is TYPE_CODE_RANGE. */
4432 rank_one_type_parm_range (struct type
*parm
, struct type
*arg
, struct value
*value
)
4434 switch (arg
->code ())
4437 case TYPE_CODE_CHAR
:
4438 case TYPE_CODE_RANGE
:
4439 case TYPE_CODE_BOOL
:
4440 case TYPE_CODE_ENUM
:
4441 return INTEGER_CONVERSION_BADNESS
;
4443 return INT_FLOAT_CONVERSION_BADNESS
;
4445 return INCOMPATIBLE_TYPE_BADNESS
;
4449 /* rank_one_type helper for when PARM's type code is TYPE_CODE_BOOL. */
4452 rank_one_type_parm_bool (struct type
*parm
, struct type
*arg
, struct value
*value
)
4454 switch (arg
->code ())
4456 /* n3290 draft, section 4.12.1 (conv.bool):
4458 "A prvalue of arithmetic, unscoped enumeration, pointer, or
4459 pointer to member type can be converted to a prvalue of type
4460 bool. A zero value, null pointer value, or null member pointer
4461 value is converted to false; any other value is converted to
4462 true. A prvalue of type std::nullptr_t can be converted to a
4463 prvalue of type bool; the resulting value is false." */
4465 case TYPE_CODE_CHAR
:
4466 case TYPE_CODE_ENUM
:
4468 case TYPE_CODE_MEMBERPTR
:
4470 return BOOL_CONVERSION_BADNESS
;
4471 case TYPE_CODE_RANGE
:
4472 return INCOMPATIBLE_TYPE_BADNESS
;
4473 case TYPE_CODE_BOOL
:
4474 return EXACT_MATCH_BADNESS
;
4476 return INCOMPATIBLE_TYPE_BADNESS
;
4480 /* rank_one_type helper for when PARM's type code is TYPE_CODE_FLOAT. */
4483 rank_one_type_parm_float (struct type
*parm
, struct type
*arg
, struct value
*value
)
4485 switch (arg
->code ())
4488 if (TYPE_LENGTH (arg
) < TYPE_LENGTH (parm
))
4489 return FLOAT_PROMOTION_BADNESS
;
4490 else if (TYPE_LENGTH (arg
) == TYPE_LENGTH (parm
))
4491 return EXACT_MATCH_BADNESS
;
4493 return FLOAT_CONVERSION_BADNESS
;
4495 case TYPE_CODE_BOOL
:
4496 case TYPE_CODE_ENUM
:
4497 case TYPE_CODE_RANGE
:
4498 case TYPE_CODE_CHAR
:
4499 return INT_FLOAT_CONVERSION_BADNESS
;
4501 return INCOMPATIBLE_TYPE_BADNESS
;
4505 /* rank_one_type helper for when PARM's type code is TYPE_CODE_COMPLEX. */
4508 rank_one_type_parm_complex (struct type
*parm
, struct type
*arg
, struct value
*value
)
4510 switch (arg
->code ())
4511 { /* Strictly not needed for C++, but... */
4513 return FLOAT_PROMOTION_BADNESS
;
4514 case TYPE_CODE_COMPLEX
:
4515 return EXACT_MATCH_BADNESS
;
4517 return INCOMPATIBLE_TYPE_BADNESS
;
4521 /* rank_one_type helper for when PARM's type code is TYPE_CODE_STRUCT. */
4524 rank_one_type_parm_struct (struct type
*parm
, struct type
*arg
, struct value
*value
)
4526 struct rank rank
= {0, 0};
4528 switch (arg
->code ())
4530 case TYPE_CODE_STRUCT
:
4531 /* Check for derivation */
4532 rank
.subrank
= distance_to_ancestor (parm
, arg
, 0);
4533 if (rank
.subrank
>= 0)
4534 return sum_ranks (BASE_CONVERSION_BADNESS
, rank
);
4537 return INCOMPATIBLE_TYPE_BADNESS
;
4541 /* rank_one_type helper for when PARM's type code is TYPE_CODE_SET. */
4544 rank_one_type_parm_set (struct type
*parm
, struct type
*arg
, struct value
*value
)
4546 switch (arg
->code ())
4550 return rank_one_type (TYPE_FIELD_TYPE (parm
, 0),
4551 TYPE_FIELD_TYPE (arg
, 0), NULL
);
4553 return INCOMPATIBLE_TYPE_BADNESS
;
4557 /* Compare one type (PARM) for compatibility with another (ARG).
4558 * PARM is intended to be the parameter type of a function; and
4559 * ARG is the supplied argument's type. This function tests if
4560 * the latter can be converted to the former.
4561 * VALUE is the argument's value or NULL if none (or called recursively)
4563 * Return 0 if they are identical types;
4564 * Otherwise, return an integer which corresponds to how compatible
4565 * PARM is to ARG. The higher the return value, the worse the match.
4566 * Generally the "bad" conversions are all uniformly assigned a 100. */
4569 rank_one_type (struct type
*parm
, struct type
*arg
, struct value
*value
)
4571 struct rank rank
= {0,0};
4573 /* Resolve typedefs */
4574 if (parm
->code () == TYPE_CODE_TYPEDEF
)
4575 parm
= check_typedef (parm
);
4576 if (arg
->code () == TYPE_CODE_TYPEDEF
)
4577 arg
= check_typedef (arg
);
4579 if (TYPE_IS_REFERENCE (parm
) && value
!= NULL
)
4581 if (VALUE_LVAL (value
) == not_lval
)
4583 /* Rvalues should preferably bind to rvalue references or const
4584 lvalue references. */
4585 if (parm
->code () == TYPE_CODE_RVALUE_REF
)
4586 rank
.subrank
= REFERENCE_CONVERSION_RVALUE
;
4587 else if (TYPE_CONST (TYPE_TARGET_TYPE (parm
)))
4588 rank
.subrank
= REFERENCE_CONVERSION_CONST_LVALUE
;
4590 return INCOMPATIBLE_TYPE_BADNESS
;
4591 return sum_ranks (rank
, REFERENCE_CONVERSION_BADNESS
);
4595 /* It's illegal to pass an lvalue as an rvalue. */
4596 if (parm
->code () == TYPE_CODE_RVALUE_REF
)
4597 return INCOMPATIBLE_TYPE_BADNESS
;
4601 if (types_equal (parm
, arg
))
4603 struct type
*t1
= parm
;
4604 struct type
*t2
= arg
;
4606 /* For pointers and references, compare target type. */
4607 if (parm
->code () == TYPE_CODE_PTR
|| TYPE_IS_REFERENCE (parm
))
4609 t1
= TYPE_TARGET_TYPE (parm
);
4610 t2
= TYPE_TARGET_TYPE (arg
);
4613 /* Make sure they are CV equal, too. */
4614 if (TYPE_CONST (t1
) != TYPE_CONST (t2
))
4615 rank
.subrank
|= CV_CONVERSION_CONST
;
4616 if (TYPE_VOLATILE (t1
) != TYPE_VOLATILE (t2
))
4617 rank
.subrank
|= CV_CONVERSION_VOLATILE
;
4618 if (rank
.subrank
!= 0)
4619 return sum_ranks (CV_CONVERSION_BADNESS
, rank
);
4620 return EXACT_MATCH_BADNESS
;
4623 /* See through references, since we can almost make non-references
4626 if (TYPE_IS_REFERENCE (arg
))
4627 return (sum_ranks (rank_one_type (parm
, TYPE_TARGET_TYPE (arg
), NULL
),
4628 REFERENCE_SEE_THROUGH_BADNESS
));
4629 if (TYPE_IS_REFERENCE (parm
))
4630 return (sum_ranks (rank_one_type (TYPE_TARGET_TYPE (parm
), arg
, NULL
),
4631 REFERENCE_SEE_THROUGH_BADNESS
));
4633 /* Debugging only. */
4634 fprintf_filtered (gdb_stderr
,
4635 "------ Arg is %s [%d], parm is %s [%d]\n",
4636 arg
->name (), arg
->code (),
4637 parm
->name (), parm
->code ());
4639 /* x -> y means arg of type x being supplied for parameter of type y. */
4641 switch (parm
->code ())
4644 return rank_one_type_parm_ptr (parm
, arg
, value
);
4645 case TYPE_CODE_ARRAY
:
4646 return rank_one_type_parm_array (parm
, arg
, value
);
4647 case TYPE_CODE_FUNC
:
4648 return rank_one_type_parm_func (parm
, arg
, value
);
4650 return rank_one_type_parm_int (parm
, arg
, value
);
4651 case TYPE_CODE_ENUM
:
4652 return rank_one_type_parm_enum (parm
, arg
, value
);
4653 case TYPE_CODE_CHAR
:
4654 return rank_one_type_parm_char (parm
, arg
, value
);
4655 case TYPE_CODE_RANGE
:
4656 return rank_one_type_parm_range (parm
, arg
, value
);
4657 case TYPE_CODE_BOOL
:
4658 return rank_one_type_parm_bool (parm
, arg
, value
);
4660 return rank_one_type_parm_float (parm
, arg
, value
);
4661 case TYPE_CODE_COMPLEX
:
4662 return rank_one_type_parm_complex (parm
, arg
, value
);
4663 case TYPE_CODE_STRUCT
:
4664 return rank_one_type_parm_struct (parm
, arg
, value
);
4666 return rank_one_type_parm_set (parm
, arg
, value
);
4668 return INCOMPATIBLE_TYPE_BADNESS
;
4669 } /* switch (arg->code ()) */
4672 /* End of functions for overload resolution. */
4674 /* Routines to pretty-print types. */
4677 print_bit_vector (B_TYPE
*bits
, int nbits
)
4681 for (bitno
= 0; bitno
< nbits
; bitno
++)
4683 if ((bitno
% 8) == 0)
4685 puts_filtered (" ");
4687 if (B_TST (bits
, bitno
))
4688 printf_filtered (("1"));
4690 printf_filtered (("0"));
4694 /* Note the first arg should be the "this" pointer, we may not want to
4695 include it since we may get into a infinitely recursive
4699 print_args (struct field
*args
, int nargs
, int spaces
)
4705 for (i
= 0; i
< nargs
; i
++)
4707 printfi_filtered (spaces
, "[%d] name '%s'\n", i
,
4708 args
[i
].name
!= NULL
? args
[i
].name
: "<NULL>");
4709 recursive_dump_type (args
[i
].type
, spaces
+ 2);
4715 field_is_static (struct field
*f
)
4717 /* "static" fields are the fields whose location is not relative
4718 to the address of the enclosing struct. It would be nice to
4719 have a dedicated flag that would be set for static fields when
4720 the type is being created. But in practice, checking the field
4721 loc_kind should give us an accurate answer. */
4722 return (FIELD_LOC_KIND (*f
) == FIELD_LOC_KIND_PHYSNAME
4723 || FIELD_LOC_KIND (*f
) == FIELD_LOC_KIND_PHYSADDR
);
4727 dump_fn_fieldlists (struct type
*type
, int spaces
)
4733 printfi_filtered (spaces
, "fn_fieldlists ");
4734 gdb_print_host_address (TYPE_FN_FIELDLISTS (type
), gdb_stdout
);
4735 printf_filtered ("\n");
4736 for (method_idx
= 0; method_idx
< TYPE_NFN_FIELDS (type
); method_idx
++)
4738 f
= TYPE_FN_FIELDLIST1 (type
, method_idx
);
4739 printfi_filtered (spaces
+ 2, "[%d] name '%s' (",
4741 TYPE_FN_FIELDLIST_NAME (type
, method_idx
));
4742 gdb_print_host_address (TYPE_FN_FIELDLIST_NAME (type
, method_idx
),
4744 printf_filtered (_(") length %d\n"),
4745 TYPE_FN_FIELDLIST_LENGTH (type
, method_idx
));
4746 for (overload_idx
= 0;
4747 overload_idx
< TYPE_FN_FIELDLIST_LENGTH (type
, method_idx
);
4750 printfi_filtered (spaces
+ 4, "[%d] physname '%s' (",
4752 TYPE_FN_FIELD_PHYSNAME (f
, overload_idx
));
4753 gdb_print_host_address (TYPE_FN_FIELD_PHYSNAME (f
, overload_idx
),
4755 printf_filtered (")\n");
4756 printfi_filtered (spaces
+ 8, "type ");
4757 gdb_print_host_address (TYPE_FN_FIELD_TYPE (f
, overload_idx
),
4759 printf_filtered ("\n");
4761 recursive_dump_type (TYPE_FN_FIELD_TYPE (f
, overload_idx
),
4764 printfi_filtered (spaces
+ 8, "args ");
4765 gdb_print_host_address (TYPE_FN_FIELD_ARGS (f
, overload_idx
),
4767 printf_filtered ("\n");
4768 print_args (TYPE_FN_FIELD_ARGS (f
, overload_idx
),
4769 TYPE_FN_FIELD_TYPE (f
, overload_idx
)->num_fields (),
4771 printfi_filtered (spaces
+ 8, "fcontext ");
4772 gdb_print_host_address (TYPE_FN_FIELD_FCONTEXT (f
, overload_idx
),
4774 printf_filtered ("\n");
4776 printfi_filtered (spaces
+ 8, "is_const %d\n",
4777 TYPE_FN_FIELD_CONST (f
, overload_idx
));
4778 printfi_filtered (spaces
+ 8, "is_volatile %d\n",
4779 TYPE_FN_FIELD_VOLATILE (f
, overload_idx
));
4780 printfi_filtered (spaces
+ 8, "is_private %d\n",
4781 TYPE_FN_FIELD_PRIVATE (f
, overload_idx
));
4782 printfi_filtered (spaces
+ 8, "is_protected %d\n",
4783 TYPE_FN_FIELD_PROTECTED (f
, overload_idx
));
4784 printfi_filtered (spaces
+ 8, "is_stub %d\n",
4785 TYPE_FN_FIELD_STUB (f
, overload_idx
));
4786 printfi_filtered (spaces
+ 8, "defaulted %d\n",
4787 TYPE_FN_FIELD_DEFAULTED (f
, overload_idx
));
4788 printfi_filtered (spaces
+ 8, "is_deleted %d\n",
4789 TYPE_FN_FIELD_DELETED (f
, overload_idx
));
4790 printfi_filtered (spaces
+ 8, "voffset %u\n",
4791 TYPE_FN_FIELD_VOFFSET (f
, overload_idx
));
4797 print_cplus_stuff (struct type
*type
, int spaces
)
4799 printfi_filtered (spaces
, "vptr_fieldno %d\n", TYPE_VPTR_FIELDNO (type
));
4800 printfi_filtered (spaces
, "vptr_basetype ");
4801 gdb_print_host_address (TYPE_VPTR_BASETYPE (type
), gdb_stdout
);
4802 puts_filtered ("\n");
4803 if (TYPE_VPTR_BASETYPE (type
) != NULL
)
4804 recursive_dump_type (TYPE_VPTR_BASETYPE (type
), spaces
+ 2);
4806 printfi_filtered (spaces
, "n_baseclasses %d\n",
4807 TYPE_N_BASECLASSES (type
));
4808 printfi_filtered (spaces
, "nfn_fields %d\n",
4809 TYPE_NFN_FIELDS (type
));
4810 if (TYPE_N_BASECLASSES (type
) > 0)
4812 printfi_filtered (spaces
, "virtual_field_bits (%d bits at *",
4813 TYPE_N_BASECLASSES (type
));
4814 gdb_print_host_address (TYPE_FIELD_VIRTUAL_BITS (type
),
4816 printf_filtered (")");
4818 print_bit_vector (TYPE_FIELD_VIRTUAL_BITS (type
),
4819 TYPE_N_BASECLASSES (type
));
4820 puts_filtered ("\n");
4822 if (type
->num_fields () > 0)
4824 if (TYPE_FIELD_PRIVATE_BITS (type
) != NULL
)
4826 printfi_filtered (spaces
,
4827 "private_field_bits (%d bits at *",
4828 type
->num_fields ());
4829 gdb_print_host_address (TYPE_FIELD_PRIVATE_BITS (type
),
4831 printf_filtered (")");
4832 print_bit_vector (TYPE_FIELD_PRIVATE_BITS (type
),
4833 type
->num_fields ());
4834 puts_filtered ("\n");
4836 if (TYPE_FIELD_PROTECTED_BITS (type
) != NULL
)
4838 printfi_filtered (spaces
,
4839 "protected_field_bits (%d bits at *",
4840 type
->num_fields ());
4841 gdb_print_host_address (TYPE_FIELD_PROTECTED_BITS (type
),
4843 printf_filtered (")");
4844 print_bit_vector (TYPE_FIELD_PROTECTED_BITS (type
),
4845 type
->num_fields ());
4846 puts_filtered ("\n");
4849 if (TYPE_NFN_FIELDS (type
) > 0)
4851 dump_fn_fieldlists (type
, spaces
);
4854 printfi_filtered (spaces
, "calling_convention %d\n",
4855 TYPE_CPLUS_CALLING_CONVENTION (type
));
4858 /* Print the contents of the TYPE's type_specific union, assuming that
4859 its type-specific kind is TYPE_SPECIFIC_GNAT_STUFF. */
4862 print_gnat_stuff (struct type
*type
, int spaces
)
4864 struct type
*descriptive_type
= TYPE_DESCRIPTIVE_TYPE (type
);
4866 if (descriptive_type
== NULL
)
4867 printfi_filtered (spaces
+ 2, "no descriptive type\n");
4870 printfi_filtered (spaces
+ 2, "descriptive type\n");
4871 recursive_dump_type (descriptive_type
, spaces
+ 4);
4875 static struct obstack dont_print_type_obstack
;
4878 recursive_dump_type (struct type
*type
, int spaces
)
4883 obstack_begin (&dont_print_type_obstack
, 0);
4885 if (type
->num_fields () > 0
4886 || (HAVE_CPLUS_STRUCT (type
) && TYPE_NFN_FIELDS (type
) > 0))
4888 struct type
**first_dont_print
4889 = (struct type
**) obstack_base (&dont_print_type_obstack
);
4891 int i
= (struct type
**)
4892 obstack_next_free (&dont_print_type_obstack
) - first_dont_print
;
4896 if (type
== first_dont_print
[i
])
4898 printfi_filtered (spaces
, "type node ");
4899 gdb_print_host_address (type
, gdb_stdout
);
4900 printf_filtered (_(" <same as already seen type>\n"));
4905 obstack_ptr_grow (&dont_print_type_obstack
, type
);
4908 printfi_filtered (spaces
, "type node ");
4909 gdb_print_host_address (type
, gdb_stdout
);
4910 printf_filtered ("\n");
4911 printfi_filtered (spaces
, "name '%s' (",
4912 type
->name () ? type
->name () : "<NULL>");
4913 gdb_print_host_address (type
->name (), gdb_stdout
);
4914 printf_filtered (")\n");
4915 printfi_filtered (spaces
, "code 0x%x ", type
->code ());
4916 switch (type
->code ())
4918 case TYPE_CODE_UNDEF
:
4919 printf_filtered ("(TYPE_CODE_UNDEF)");
4922 printf_filtered ("(TYPE_CODE_PTR)");
4924 case TYPE_CODE_ARRAY
:
4925 printf_filtered ("(TYPE_CODE_ARRAY)");
4927 case TYPE_CODE_STRUCT
:
4928 printf_filtered ("(TYPE_CODE_STRUCT)");
4930 case TYPE_CODE_UNION
:
4931 printf_filtered ("(TYPE_CODE_UNION)");
4933 case TYPE_CODE_ENUM
:
4934 printf_filtered ("(TYPE_CODE_ENUM)");
4936 case TYPE_CODE_FLAGS
:
4937 printf_filtered ("(TYPE_CODE_FLAGS)");
4939 case TYPE_CODE_FUNC
:
4940 printf_filtered ("(TYPE_CODE_FUNC)");
4943 printf_filtered ("(TYPE_CODE_INT)");
4946 printf_filtered ("(TYPE_CODE_FLT)");
4948 case TYPE_CODE_VOID
:
4949 printf_filtered ("(TYPE_CODE_VOID)");
4952 printf_filtered ("(TYPE_CODE_SET)");
4954 case TYPE_CODE_RANGE
:
4955 printf_filtered ("(TYPE_CODE_RANGE)");
4957 case TYPE_CODE_STRING
:
4958 printf_filtered ("(TYPE_CODE_STRING)");
4960 case TYPE_CODE_ERROR
:
4961 printf_filtered ("(TYPE_CODE_ERROR)");
4963 case TYPE_CODE_MEMBERPTR
:
4964 printf_filtered ("(TYPE_CODE_MEMBERPTR)");
4966 case TYPE_CODE_METHODPTR
:
4967 printf_filtered ("(TYPE_CODE_METHODPTR)");
4969 case TYPE_CODE_METHOD
:
4970 printf_filtered ("(TYPE_CODE_METHOD)");
4973 printf_filtered ("(TYPE_CODE_REF)");
4975 case TYPE_CODE_CHAR
:
4976 printf_filtered ("(TYPE_CODE_CHAR)");
4978 case TYPE_CODE_BOOL
:
4979 printf_filtered ("(TYPE_CODE_BOOL)");
4981 case TYPE_CODE_COMPLEX
:
4982 printf_filtered ("(TYPE_CODE_COMPLEX)");
4984 case TYPE_CODE_TYPEDEF
:
4985 printf_filtered ("(TYPE_CODE_TYPEDEF)");
4987 case TYPE_CODE_NAMESPACE
:
4988 printf_filtered ("(TYPE_CODE_NAMESPACE)");
4991 printf_filtered ("(UNKNOWN TYPE CODE)");
4994 puts_filtered ("\n");
4995 printfi_filtered (spaces
, "length %s\n", pulongest (TYPE_LENGTH (type
)));
4996 if (TYPE_OBJFILE_OWNED (type
))
4998 printfi_filtered (spaces
, "objfile ");
4999 gdb_print_host_address (TYPE_OWNER (type
).objfile
, gdb_stdout
);
5003 printfi_filtered (spaces
, "gdbarch ");
5004 gdb_print_host_address (TYPE_OWNER (type
).gdbarch
, gdb_stdout
);
5006 printf_filtered ("\n");
5007 printfi_filtered (spaces
, "target_type ");
5008 gdb_print_host_address (TYPE_TARGET_TYPE (type
), gdb_stdout
);
5009 printf_filtered ("\n");
5010 if (TYPE_TARGET_TYPE (type
) != NULL
)
5012 recursive_dump_type (TYPE_TARGET_TYPE (type
), spaces
+ 2);
5014 printfi_filtered (spaces
, "pointer_type ");
5015 gdb_print_host_address (TYPE_POINTER_TYPE (type
), gdb_stdout
);
5016 printf_filtered ("\n");
5017 printfi_filtered (spaces
, "reference_type ");
5018 gdb_print_host_address (TYPE_REFERENCE_TYPE (type
), gdb_stdout
);
5019 printf_filtered ("\n");
5020 printfi_filtered (spaces
, "type_chain ");
5021 gdb_print_host_address (TYPE_CHAIN (type
), gdb_stdout
);
5022 printf_filtered ("\n");
5023 printfi_filtered (spaces
, "instance_flags 0x%x",
5024 TYPE_INSTANCE_FLAGS (type
));
5025 if (TYPE_CONST (type
))
5027 puts_filtered (" TYPE_CONST");
5029 if (TYPE_VOLATILE (type
))
5031 puts_filtered (" TYPE_VOLATILE");
5033 if (TYPE_CODE_SPACE (type
))
5035 puts_filtered (" TYPE_CODE_SPACE");
5037 if (TYPE_DATA_SPACE (type
))
5039 puts_filtered (" TYPE_DATA_SPACE");
5041 if (TYPE_ADDRESS_CLASS_1 (type
))
5043 puts_filtered (" TYPE_ADDRESS_CLASS_1");
5045 if (TYPE_ADDRESS_CLASS_2 (type
))
5047 puts_filtered (" TYPE_ADDRESS_CLASS_2");
5049 if (TYPE_RESTRICT (type
))
5051 puts_filtered (" TYPE_RESTRICT");
5053 if (TYPE_ATOMIC (type
))
5055 puts_filtered (" TYPE_ATOMIC");
5057 puts_filtered ("\n");
5059 printfi_filtered (spaces
, "flags");
5060 if (TYPE_UNSIGNED (type
))
5062 puts_filtered (" TYPE_UNSIGNED");
5064 if (TYPE_NOSIGN (type
))
5066 puts_filtered (" TYPE_NOSIGN");
5068 if (TYPE_ENDIANITY_NOT_DEFAULT (type
))
5070 puts_filtered (" TYPE_ENDIANITY_NOT_DEFAULT");
5072 if (TYPE_STUB (type
))
5074 puts_filtered (" TYPE_STUB");
5076 if (TYPE_TARGET_STUB (type
))
5078 puts_filtered (" TYPE_TARGET_STUB");
5080 if (TYPE_PROTOTYPED (type
))
5082 puts_filtered (" TYPE_PROTOTYPED");
5084 if (TYPE_VARARGS (type
))
5086 puts_filtered (" TYPE_VARARGS");
5088 /* This is used for things like AltiVec registers on ppc. Gcc emits
5089 an attribute for the array type, which tells whether or not we
5090 have a vector, instead of a regular array. */
5091 if (TYPE_VECTOR (type
))
5093 puts_filtered (" TYPE_VECTOR");
5095 if (TYPE_FIXED_INSTANCE (type
))
5097 puts_filtered (" TYPE_FIXED_INSTANCE");
5099 if (TYPE_STUB_SUPPORTED (type
))
5101 puts_filtered (" TYPE_STUB_SUPPORTED");
5103 if (TYPE_NOTTEXT (type
))
5105 puts_filtered (" TYPE_NOTTEXT");
5107 puts_filtered ("\n");
5108 printfi_filtered (spaces
, "nfields %d ", type
->num_fields ());
5109 gdb_print_host_address (type
->fields (), gdb_stdout
);
5110 puts_filtered ("\n");
5111 for (idx
= 0; idx
< type
->num_fields (); idx
++)
5113 if (type
->code () == TYPE_CODE_ENUM
)
5114 printfi_filtered (spaces
+ 2,
5115 "[%d] enumval %s type ",
5116 idx
, plongest (TYPE_FIELD_ENUMVAL (type
, idx
)));
5118 printfi_filtered (spaces
+ 2,
5119 "[%d] bitpos %s bitsize %d type ",
5120 idx
, plongest (TYPE_FIELD_BITPOS (type
, idx
)),
5121 TYPE_FIELD_BITSIZE (type
, idx
));
5122 gdb_print_host_address (TYPE_FIELD_TYPE (type
, idx
), gdb_stdout
);
5123 printf_filtered (" name '%s' (",
5124 TYPE_FIELD_NAME (type
, idx
) != NULL
5125 ? TYPE_FIELD_NAME (type
, idx
)
5127 gdb_print_host_address (TYPE_FIELD_NAME (type
, idx
), gdb_stdout
);
5128 printf_filtered (")\n");
5129 if (TYPE_FIELD_TYPE (type
, idx
) != NULL
)
5131 recursive_dump_type (TYPE_FIELD_TYPE (type
, idx
), spaces
+ 4);
5134 if (type
->code () == TYPE_CODE_RANGE
)
5136 printfi_filtered (spaces
, "low %s%s high %s%s\n",
5137 plongest (TYPE_LOW_BOUND (type
)),
5138 TYPE_LOW_BOUND_UNDEFINED (type
) ? " (undefined)" : "",
5139 plongest (TYPE_HIGH_BOUND (type
)),
5140 TYPE_HIGH_BOUND_UNDEFINED (type
)
5141 ? " (undefined)" : "");
5144 switch (TYPE_SPECIFIC_FIELD (type
))
5146 case TYPE_SPECIFIC_CPLUS_STUFF
:
5147 printfi_filtered (spaces
, "cplus_stuff ");
5148 gdb_print_host_address (TYPE_CPLUS_SPECIFIC (type
),
5150 puts_filtered ("\n");
5151 print_cplus_stuff (type
, spaces
);
5154 case TYPE_SPECIFIC_GNAT_STUFF
:
5155 printfi_filtered (spaces
, "gnat_stuff ");
5156 gdb_print_host_address (TYPE_GNAT_SPECIFIC (type
), gdb_stdout
);
5157 puts_filtered ("\n");
5158 print_gnat_stuff (type
, spaces
);
5161 case TYPE_SPECIFIC_FLOATFORMAT
:
5162 printfi_filtered (spaces
, "floatformat ");
5163 if (TYPE_FLOATFORMAT (type
) == NULL
5164 || TYPE_FLOATFORMAT (type
)->name
== NULL
)
5165 puts_filtered ("(null)");
5167 puts_filtered (TYPE_FLOATFORMAT (type
)->name
);
5168 puts_filtered ("\n");
5171 case TYPE_SPECIFIC_FUNC
:
5172 printfi_filtered (spaces
, "calling_convention %d\n",
5173 TYPE_CALLING_CONVENTION (type
));
5174 /* tail_call_list is not printed. */
5177 case TYPE_SPECIFIC_SELF_TYPE
:
5178 printfi_filtered (spaces
, "self_type ");
5179 gdb_print_host_address (TYPE_SELF_TYPE (type
), gdb_stdout
);
5180 puts_filtered ("\n");
5185 obstack_free (&dont_print_type_obstack
, NULL
);
5188 /* Trivial helpers for the libiberty hash table, for mapping one
5191 struct type_pair
: public allocate_on_obstack
5193 type_pair (struct type
*old_
, struct type
*newobj_
)
5194 : old (old_
), newobj (newobj_
)
5197 struct type
* const old
, * const newobj
;
5201 type_pair_hash (const void *item
)
5203 const struct type_pair
*pair
= (const struct type_pair
*) item
;
5205 return htab_hash_pointer (pair
->old
);
5209 type_pair_eq (const void *item_lhs
, const void *item_rhs
)
5211 const struct type_pair
*lhs
= (const struct type_pair
*) item_lhs
;
5212 const struct type_pair
*rhs
= (const struct type_pair
*) item_rhs
;
5214 return lhs
->old
== rhs
->old
;
5217 /* Allocate the hash table used by copy_type_recursive to walk
5218 types without duplicates. We use OBJFILE's obstack, because
5219 OBJFILE is about to be deleted. */
5222 create_copied_types_hash (struct objfile
*objfile
)
5224 return htab_create_alloc_ex (1, type_pair_hash
, type_pair_eq
,
5225 NULL
, &objfile
->objfile_obstack
,
5226 hashtab_obstack_allocate
,
5227 dummy_obstack_deallocate
);
5230 /* Recursively copy (deep copy) a dynamic attribute list of a type. */
5232 static struct dynamic_prop_list
*
5233 copy_dynamic_prop_list (struct obstack
*objfile_obstack
,
5234 struct dynamic_prop_list
*list
)
5236 struct dynamic_prop_list
*copy
= list
;
5237 struct dynamic_prop_list
**node_ptr
= ©
;
5239 while (*node_ptr
!= NULL
)
5241 struct dynamic_prop_list
*node_copy
;
5243 node_copy
= ((struct dynamic_prop_list
*)
5244 obstack_copy (objfile_obstack
, *node_ptr
,
5245 sizeof (struct dynamic_prop_list
)));
5246 node_copy
->prop
= (*node_ptr
)->prop
;
5247 *node_ptr
= node_copy
;
5249 node_ptr
= &node_copy
->next
;
5255 /* Recursively copy (deep copy) TYPE, if it is associated with
5256 OBJFILE. Return a new type owned by the gdbarch associated with the type, a
5257 saved type if we have already visited TYPE (using COPIED_TYPES), or TYPE if
5258 it is not associated with OBJFILE. */
5261 copy_type_recursive (struct objfile
*objfile
,
5263 htab_t copied_types
)
5266 struct type
*new_type
;
5268 if (! TYPE_OBJFILE_OWNED (type
))
5271 /* This type shouldn't be pointing to any types in other objfiles;
5272 if it did, the type might disappear unexpectedly. */
5273 gdb_assert (TYPE_OBJFILE (type
) == objfile
);
5275 struct type_pair
pair (type
, nullptr);
5277 slot
= htab_find_slot (copied_types
, &pair
, INSERT
);
5279 return ((struct type_pair
*) *slot
)->newobj
;
5281 new_type
= alloc_type_arch (get_type_arch (type
));
5283 /* We must add the new type to the hash table immediately, in case
5284 we encounter this type again during a recursive call below. */
5285 struct type_pair
*stored
5286 = new (&objfile
->objfile_obstack
) struct type_pair (type
, new_type
);
5290 /* Copy the common fields of types. For the main type, we simply
5291 copy the entire thing and then update specific fields as needed. */
5292 *TYPE_MAIN_TYPE (new_type
) = *TYPE_MAIN_TYPE (type
);
5293 TYPE_OBJFILE_OWNED (new_type
) = 0;
5294 TYPE_OWNER (new_type
).gdbarch
= get_type_arch (type
);
5297 new_type
->set_name (xstrdup (type
->name ()));
5299 TYPE_INSTANCE_FLAGS (new_type
) = TYPE_INSTANCE_FLAGS (type
);
5300 TYPE_LENGTH (new_type
) = TYPE_LENGTH (type
);
5302 /* Copy the fields. */
5303 if (type
->num_fields ())
5307 nfields
= type
->num_fields ();
5308 new_type
->set_fields
5310 TYPE_ZALLOC (new_type
, nfields
* sizeof (struct field
)));
5312 for (i
= 0; i
< nfields
; i
++)
5314 TYPE_FIELD_ARTIFICIAL (new_type
, i
) =
5315 TYPE_FIELD_ARTIFICIAL (type
, i
);
5316 TYPE_FIELD_BITSIZE (new_type
, i
) = TYPE_FIELD_BITSIZE (type
, i
);
5317 if (TYPE_FIELD_TYPE (type
, i
))
5318 TYPE_FIELD_TYPE (new_type
, i
)
5319 = copy_type_recursive (objfile
, TYPE_FIELD_TYPE (type
, i
),
5321 if (TYPE_FIELD_NAME (type
, i
))
5322 TYPE_FIELD_NAME (new_type
, i
) =
5323 xstrdup (TYPE_FIELD_NAME (type
, i
));
5324 switch (TYPE_FIELD_LOC_KIND (type
, i
))
5326 case FIELD_LOC_KIND_BITPOS
:
5327 SET_FIELD_BITPOS (new_type
->field (i
),
5328 TYPE_FIELD_BITPOS (type
, i
));
5330 case FIELD_LOC_KIND_ENUMVAL
:
5331 SET_FIELD_ENUMVAL (new_type
->field (i
),
5332 TYPE_FIELD_ENUMVAL (type
, i
));
5334 case FIELD_LOC_KIND_PHYSADDR
:
5335 SET_FIELD_PHYSADDR (new_type
->field (i
),
5336 TYPE_FIELD_STATIC_PHYSADDR (type
, i
));
5338 case FIELD_LOC_KIND_PHYSNAME
:
5339 SET_FIELD_PHYSNAME (new_type
->field (i
),
5340 xstrdup (TYPE_FIELD_STATIC_PHYSNAME (type
,
5344 internal_error (__FILE__
, __LINE__
,
5345 _("Unexpected type field location kind: %d"),
5346 TYPE_FIELD_LOC_KIND (type
, i
));
5351 /* For range types, copy the bounds information. */
5352 if (type
->code () == TYPE_CODE_RANGE
)
5354 TYPE_RANGE_DATA (new_type
) = (struct range_bounds
*)
5355 TYPE_ALLOC (new_type
, sizeof (struct range_bounds
));
5356 *TYPE_RANGE_DATA (new_type
) = *TYPE_RANGE_DATA (type
);
5359 if (type
->main_type
->dyn_prop_list
!= NULL
)
5360 new_type
->main_type
->dyn_prop_list
5361 = copy_dynamic_prop_list (&objfile
->objfile_obstack
,
5362 type
->main_type
->dyn_prop_list
);
5365 /* Copy pointers to other types. */
5366 if (TYPE_TARGET_TYPE (type
))
5367 TYPE_TARGET_TYPE (new_type
) =
5368 copy_type_recursive (objfile
,
5369 TYPE_TARGET_TYPE (type
),
5372 /* Maybe copy the type_specific bits.
5374 NOTE drow/2005-12-09: We do not copy the C++-specific bits like
5375 base classes and methods. There's no fundamental reason why we
5376 can't, but at the moment it is not needed. */
5378 switch (TYPE_SPECIFIC_FIELD (type
))
5380 case TYPE_SPECIFIC_NONE
:
5382 case TYPE_SPECIFIC_FUNC
:
5383 INIT_FUNC_SPECIFIC (new_type
);
5384 TYPE_CALLING_CONVENTION (new_type
) = TYPE_CALLING_CONVENTION (type
);
5385 TYPE_NO_RETURN (new_type
) = TYPE_NO_RETURN (type
);
5386 TYPE_TAIL_CALL_LIST (new_type
) = NULL
;
5388 case TYPE_SPECIFIC_FLOATFORMAT
:
5389 TYPE_FLOATFORMAT (new_type
) = TYPE_FLOATFORMAT (type
);
5391 case TYPE_SPECIFIC_CPLUS_STUFF
:
5392 INIT_CPLUS_SPECIFIC (new_type
);
5394 case TYPE_SPECIFIC_GNAT_STUFF
:
5395 INIT_GNAT_SPECIFIC (new_type
);
5397 case TYPE_SPECIFIC_SELF_TYPE
:
5398 set_type_self_type (new_type
,
5399 copy_type_recursive (objfile
, TYPE_SELF_TYPE (type
),
5403 gdb_assert_not_reached ("bad type_specific_kind");
5409 /* Make a copy of the given TYPE, except that the pointer & reference
5410 types are not preserved.
5412 This function assumes that the given type has an associated objfile.
5413 This objfile is used to allocate the new type. */
5416 copy_type (const struct type
*type
)
5418 struct type
*new_type
;
5420 gdb_assert (TYPE_OBJFILE_OWNED (type
));
5422 new_type
= alloc_type_copy (type
);
5423 TYPE_INSTANCE_FLAGS (new_type
) = TYPE_INSTANCE_FLAGS (type
);
5424 TYPE_LENGTH (new_type
) = TYPE_LENGTH (type
);
5425 memcpy (TYPE_MAIN_TYPE (new_type
), TYPE_MAIN_TYPE (type
),
5426 sizeof (struct main_type
));
5427 if (type
->main_type
->dyn_prop_list
!= NULL
)
5428 new_type
->main_type
->dyn_prop_list
5429 = copy_dynamic_prop_list (&TYPE_OBJFILE (type
) -> objfile_obstack
,
5430 type
->main_type
->dyn_prop_list
);
5435 /* Helper functions to initialize architecture-specific types. */
5437 /* Allocate a type structure associated with GDBARCH and set its
5438 CODE, LENGTH, and NAME fields. */
5441 arch_type (struct gdbarch
*gdbarch
,
5442 enum type_code code
, int bit
, const char *name
)
5446 type
= alloc_type_arch (gdbarch
);
5447 set_type_code (type
, code
);
5448 gdb_assert ((bit
% TARGET_CHAR_BIT
) == 0);
5449 TYPE_LENGTH (type
) = bit
/ TARGET_CHAR_BIT
;
5452 type
->set_name (gdbarch_obstack_strdup (gdbarch
, name
));
5457 /* Allocate a TYPE_CODE_INT type structure associated with GDBARCH.
5458 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
5459 the type's TYPE_UNSIGNED flag. NAME is the type name. */
5462 arch_integer_type (struct gdbarch
*gdbarch
,
5463 int bit
, int unsigned_p
, const char *name
)
5467 t
= arch_type (gdbarch
, TYPE_CODE_INT
, bit
, name
);
5469 TYPE_UNSIGNED (t
) = 1;
5474 /* Allocate a TYPE_CODE_CHAR type structure associated with GDBARCH.
5475 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
5476 the type's TYPE_UNSIGNED flag. NAME is the type name. */
5479 arch_character_type (struct gdbarch
*gdbarch
,
5480 int bit
, int unsigned_p
, const char *name
)
5484 t
= arch_type (gdbarch
, TYPE_CODE_CHAR
, bit
, name
);
5486 TYPE_UNSIGNED (t
) = 1;
5491 /* Allocate a TYPE_CODE_BOOL type structure associated with GDBARCH.
5492 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
5493 the type's TYPE_UNSIGNED flag. NAME is the type name. */
5496 arch_boolean_type (struct gdbarch
*gdbarch
,
5497 int bit
, int unsigned_p
, const char *name
)
5501 t
= arch_type (gdbarch
, TYPE_CODE_BOOL
, bit
, name
);
5503 TYPE_UNSIGNED (t
) = 1;
5508 /* Allocate a TYPE_CODE_FLT type structure associated with GDBARCH.
5509 BIT is the type size in bits; if BIT equals -1, the size is
5510 determined by the floatformat. NAME is the type name. Set the
5511 TYPE_FLOATFORMAT from FLOATFORMATS. */
5514 arch_float_type (struct gdbarch
*gdbarch
,
5515 int bit
, const char *name
,
5516 const struct floatformat
**floatformats
)
5518 const struct floatformat
*fmt
= floatformats
[gdbarch_byte_order (gdbarch
)];
5521 bit
= verify_floatformat (bit
, fmt
);
5522 t
= arch_type (gdbarch
, TYPE_CODE_FLT
, bit
, name
);
5523 TYPE_FLOATFORMAT (t
) = fmt
;
5528 /* Allocate a TYPE_CODE_DECFLOAT type structure associated with GDBARCH.
5529 BIT is the type size in bits. NAME is the type name. */
5532 arch_decfloat_type (struct gdbarch
*gdbarch
, int bit
, const char *name
)
5536 t
= arch_type (gdbarch
, TYPE_CODE_DECFLOAT
, bit
, name
);
5540 /* Allocate a TYPE_CODE_PTR type structure associated with GDBARCH.
5541 BIT is the pointer type size in bits. NAME is the type name.
5542 TARGET_TYPE is the pointer target type. Always sets the pointer type's
5543 TYPE_UNSIGNED flag. */
5546 arch_pointer_type (struct gdbarch
*gdbarch
,
5547 int bit
, const char *name
, struct type
*target_type
)
5551 t
= arch_type (gdbarch
, TYPE_CODE_PTR
, bit
, name
);
5552 TYPE_TARGET_TYPE (t
) = target_type
;
5553 TYPE_UNSIGNED (t
) = 1;
5557 /* Allocate a TYPE_CODE_FLAGS type structure associated with GDBARCH.
5558 NAME is the type name. BIT is the size of the flag word in bits. */
5561 arch_flags_type (struct gdbarch
*gdbarch
, const char *name
, int bit
)
5565 type
= arch_type (gdbarch
, TYPE_CODE_FLAGS
, bit
, name
);
5566 TYPE_UNSIGNED (type
) = 1;
5567 type
->set_num_fields (0);
5568 /* Pre-allocate enough space assuming every field is one bit. */
5570 ((struct field
*) TYPE_ZALLOC (type
, bit
* sizeof (struct field
)));
5575 /* Add field to TYPE_CODE_FLAGS type TYPE to indicate the bit at
5576 position BITPOS is called NAME. Pass NAME as "" for fields that
5577 should not be printed. */
5580 append_flags_type_field (struct type
*type
, int start_bitpos
, int nr_bits
,
5581 struct type
*field_type
, const char *name
)
5583 int type_bitsize
= TYPE_LENGTH (type
) * TARGET_CHAR_BIT
;
5584 int field_nr
= type
->num_fields ();
5586 gdb_assert (type
->code () == TYPE_CODE_FLAGS
);
5587 gdb_assert (type
->num_fields () + 1 <= type_bitsize
);
5588 gdb_assert (start_bitpos
>= 0 && start_bitpos
< type_bitsize
);
5589 gdb_assert (nr_bits
>= 1 && nr_bits
<= type_bitsize
);
5590 gdb_assert (name
!= NULL
);
5592 TYPE_FIELD_NAME (type
, field_nr
) = xstrdup (name
);
5593 TYPE_FIELD_TYPE (type
, field_nr
) = field_type
;
5594 SET_FIELD_BITPOS (type
->field (field_nr
), start_bitpos
);
5595 TYPE_FIELD_BITSIZE (type
, field_nr
) = nr_bits
;
5596 type
->set_num_fields (type
->num_fields () + 1);
5599 /* Special version of append_flags_type_field to add a flag field.
5600 Add field to TYPE_CODE_FLAGS type TYPE to indicate the bit at
5601 position BITPOS is called NAME. */
5604 append_flags_type_flag (struct type
*type
, int bitpos
, const char *name
)
5606 struct gdbarch
*gdbarch
= get_type_arch (type
);
5608 append_flags_type_field (type
, bitpos
, 1,
5609 builtin_type (gdbarch
)->builtin_bool
,
5613 /* Allocate a TYPE_CODE_STRUCT or TYPE_CODE_UNION type structure (as
5614 specified by CODE) associated with GDBARCH. NAME is the type name. */
5617 arch_composite_type (struct gdbarch
*gdbarch
, const char *name
,
5618 enum type_code code
)
5622 gdb_assert (code
== TYPE_CODE_STRUCT
|| code
== TYPE_CODE_UNION
);
5623 t
= arch_type (gdbarch
, code
, 0, NULL
);
5625 INIT_CPLUS_SPECIFIC (t
);
5629 /* Add new field with name NAME and type FIELD to composite type T.
5630 Do not set the field's position or adjust the type's length;
5631 the caller should do so. Return the new field. */
5634 append_composite_type_field_raw (struct type
*t
, const char *name
,
5639 t
->set_num_fields (t
->num_fields () + 1);
5640 t
->set_fields (XRESIZEVEC (struct field
, t
->fields (),
5642 f
= &t
->field (t
->num_fields () - 1);
5643 memset (f
, 0, sizeof f
[0]);
5644 FIELD_TYPE (f
[0]) = field
;
5645 FIELD_NAME (f
[0]) = name
;
5649 /* Add new field with name NAME and type FIELD to composite type T.
5650 ALIGNMENT (if non-zero) specifies the minimum field alignment. */
5653 append_composite_type_field_aligned (struct type
*t
, const char *name
,
5654 struct type
*field
, int alignment
)
5656 struct field
*f
= append_composite_type_field_raw (t
, name
, field
);
5658 if (t
->code () == TYPE_CODE_UNION
)
5660 if (TYPE_LENGTH (t
) < TYPE_LENGTH (field
))
5661 TYPE_LENGTH (t
) = TYPE_LENGTH (field
);
5663 else if (t
->code () == TYPE_CODE_STRUCT
)
5665 TYPE_LENGTH (t
) = TYPE_LENGTH (t
) + TYPE_LENGTH (field
);
5666 if (t
->num_fields () > 1)
5668 SET_FIELD_BITPOS (f
[0],
5669 (FIELD_BITPOS (f
[-1])
5670 + (TYPE_LENGTH (FIELD_TYPE (f
[-1]))
5671 * TARGET_CHAR_BIT
)));
5677 alignment
*= TARGET_CHAR_BIT
;
5678 left
= FIELD_BITPOS (f
[0]) % alignment
;
5682 SET_FIELD_BITPOS (f
[0], FIELD_BITPOS (f
[0]) + (alignment
- left
));
5683 TYPE_LENGTH (t
) += (alignment
- left
) / TARGET_CHAR_BIT
;
5690 /* Add new field with name NAME and type FIELD to composite type T. */
5693 append_composite_type_field (struct type
*t
, const char *name
,
5696 append_composite_type_field_aligned (t
, name
, field
, 0);
5699 static struct gdbarch_data
*gdbtypes_data
;
5701 const struct builtin_type
*
5702 builtin_type (struct gdbarch
*gdbarch
)
5704 return (const struct builtin_type
*) gdbarch_data (gdbarch
, gdbtypes_data
);
5708 gdbtypes_post_init (struct gdbarch
*gdbarch
)
5710 struct builtin_type
*builtin_type
5711 = GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct builtin_type
);
5714 builtin_type
->builtin_void
5715 = arch_type (gdbarch
, TYPE_CODE_VOID
, TARGET_CHAR_BIT
, "void");
5716 builtin_type
->builtin_char
5717 = arch_integer_type (gdbarch
, TARGET_CHAR_BIT
,
5718 !gdbarch_char_signed (gdbarch
), "char");
5719 TYPE_NOSIGN (builtin_type
->builtin_char
) = 1;
5720 builtin_type
->builtin_signed_char
5721 = arch_integer_type (gdbarch
, TARGET_CHAR_BIT
,
5723 builtin_type
->builtin_unsigned_char
5724 = arch_integer_type (gdbarch
, TARGET_CHAR_BIT
,
5725 1, "unsigned char");
5726 builtin_type
->builtin_short
5727 = arch_integer_type (gdbarch
, gdbarch_short_bit (gdbarch
),
5729 builtin_type
->builtin_unsigned_short
5730 = arch_integer_type (gdbarch
, gdbarch_short_bit (gdbarch
),
5731 1, "unsigned short");
5732 builtin_type
->builtin_int
5733 = arch_integer_type (gdbarch
, gdbarch_int_bit (gdbarch
),
5735 builtin_type
->builtin_unsigned_int
5736 = arch_integer_type (gdbarch
, gdbarch_int_bit (gdbarch
),
5738 builtin_type
->builtin_long
5739 = arch_integer_type (gdbarch
, gdbarch_long_bit (gdbarch
),
5741 builtin_type
->builtin_unsigned_long
5742 = arch_integer_type (gdbarch
, gdbarch_long_bit (gdbarch
),
5743 1, "unsigned long");
5744 builtin_type
->builtin_long_long
5745 = arch_integer_type (gdbarch
, gdbarch_long_long_bit (gdbarch
),
5747 builtin_type
->builtin_unsigned_long_long
5748 = arch_integer_type (gdbarch
, gdbarch_long_long_bit (gdbarch
),
5749 1, "unsigned long long");
5750 builtin_type
->builtin_half
5751 = arch_float_type (gdbarch
, gdbarch_half_bit (gdbarch
),
5752 "half", gdbarch_half_format (gdbarch
));
5753 builtin_type
->builtin_float
5754 = arch_float_type (gdbarch
, gdbarch_float_bit (gdbarch
),
5755 "float", gdbarch_float_format (gdbarch
));
5756 builtin_type
->builtin_double
5757 = arch_float_type (gdbarch
, gdbarch_double_bit (gdbarch
),
5758 "double", gdbarch_double_format (gdbarch
));
5759 builtin_type
->builtin_long_double
5760 = arch_float_type (gdbarch
, gdbarch_long_double_bit (gdbarch
),
5761 "long double", gdbarch_long_double_format (gdbarch
));
5762 builtin_type
->builtin_complex
5763 = init_complex_type ("complex", builtin_type
->builtin_float
);
5764 builtin_type
->builtin_double_complex
5765 = init_complex_type ("double complex", builtin_type
->builtin_double
);
5766 builtin_type
->builtin_string
5767 = arch_type (gdbarch
, TYPE_CODE_STRING
, TARGET_CHAR_BIT
, "string");
5768 builtin_type
->builtin_bool
5769 = arch_type (gdbarch
, TYPE_CODE_BOOL
, TARGET_CHAR_BIT
, "bool");
5771 /* The following three are about decimal floating point types, which
5772 are 32-bits, 64-bits and 128-bits respectively. */
5773 builtin_type
->builtin_decfloat
5774 = arch_decfloat_type (gdbarch
, 32, "_Decimal32");
5775 builtin_type
->builtin_decdouble
5776 = arch_decfloat_type (gdbarch
, 64, "_Decimal64");
5777 builtin_type
->builtin_declong
5778 = arch_decfloat_type (gdbarch
, 128, "_Decimal128");
5780 /* "True" character types. */
5781 builtin_type
->builtin_true_char
5782 = arch_character_type (gdbarch
, TARGET_CHAR_BIT
, 0, "true character");
5783 builtin_type
->builtin_true_unsigned_char
5784 = arch_character_type (gdbarch
, TARGET_CHAR_BIT
, 1, "true character");
5786 /* Fixed-size integer types. */
5787 builtin_type
->builtin_int0
5788 = arch_integer_type (gdbarch
, 0, 0, "int0_t");
5789 builtin_type
->builtin_int8
5790 = arch_integer_type (gdbarch
, 8, 0, "int8_t");
5791 builtin_type
->builtin_uint8
5792 = arch_integer_type (gdbarch
, 8, 1, "uint8_t");
5793 builtin_type
->builtin_int16
5794 = arch_integer_type (gdbarch
, 16, 0, "int16_t");
5795 builtin_type
->builtin_uint16
5796 = arch_integer_type (gdbarch
, 16, 1, "uint16_t");
5797 builtin_type
->builtin_int24
5798 = arch_integer_type (gdbarch
, 24, 0, "int24_t");
5799 builtin_type
->builtin_uint24
5800 = arch_integer_type (gdbarch
, 24, 1, "uint24_t");
5801 builtin_type
->builtin_int32
5802 = arch_integer_type (gdbarch
, 32, 0, "int32_t");
5803 builtin_type
->builtin_uint32
5804 = arch_integer_type (gdbarch
, 32, 1, "uint32_t");
5805 builtin_type
->builtin_int64
5806 = arch_integer_type (gdbarch
, 64, 0, "int64_t");
5807 builtin_type
->builtin_uint64
5808 = arch_integer_type (gdbarch
, 64, 1, "uint64_t");
5809 builtin_type
->builtin_int128
5810 = arch_integer_type (gdbarch
, 128, 0, "int128_t");
5811 builtin_type
->builtin_uint128
5812 = arch_integer_type (gdbarch
, 128, 1, "uint128_t");
5813 TYPE_INSTANCE_FLAGS (builtin_type
->builtin_int8
) |=
5814 TYPE_INSTANCE_FLAG_NOTTEXT
;
5815 TYPE_INSTANCE_FLAGS (builtin_type
->builtin_uint8
) |=
5816 TYPE_INSTANCE_FLAG_NOTTEXT
;
5818 /* Wide character types. */
5819 builtin_type
->builtin_char16
5820 = arch_integer_type (gdbarch
, 16, 1, "char16_t");
5821 builtin_type
->builtin_char32
5822 = arch_integer_type (gdbarch
, 32, 1, "char32_t");
5823 builtin_type
->builtin_wchar
5824 = arch_integer_type (gdbarch
, gdbarch_wchar_bit (gdbarch
),
5825 !gdbarch_wchar_signed (gdbarch
), "wchar_t");
5827 /* Default data/code pointer types. */
5828 builtin_type
->builtin_data_ptr
5829 = lookup_pointer_type (builtin_type
->builtin_void
);
5830 builtin_type
->builtin_func_ptr
5831 = lookup_pointer_type (lookup_function_type (builtin_type
->builtin_void
));
5832 builtin_type
->builtin_func_func
5833 = lookup_function_type (builtin_type
->builtin_func_ptr
);
5835 /* This type represents a GDB internal function. */
5836 builtin_type
->internal_fn
5837 = arch_type (gdbarch
, TYPE_CODE_INTERNAL_FUNCTION
, 0,
5838 "<internal function>");
5840 /* This type represents an xmethod. */
5841 builtin_type
->xmethod
5842 = arch_type (gdbarch
, TYPE_CODE_XMETHOD
, 0, "<xmethod>");
5844 return builtin_type
;
5847 /* This set of objfile-based types is intended to be used by symbol
5848 readers as basic types. */
5850 static const struct objfile_key
<struct objfile_type
,
5851 gdb::noop_deleter
<struct objfile_type
>>
5854 const struct objfile_type
*
5855 objfile_type (struct objfile
*objfile
)
5857 struct gdbarch
*gdbarch
;
5858 struct objfile_type
*objfile_type
= objfile_type_data
.get (objfile
);
5861 return objfile_type
;
5863 objfile_type
= OBSTACK_CALLOC (&objfile
->objfile_obstack
,
5864 1, struct objfile_type
);
5866 /* Use the objfile architecture to determine basic type properties. */
5867 gdbarch
= objfile
->arch ();
5870 objfile_type
->builtin_void
5871 = init_type (objfile
, TYPE_CODE_VOID
, TARGET_CHAR_BIT
, "void");
5872 objfile_type
->builtin_char
5873 = init_integer_type (objfile
, TARGET_CHAR_BIT
,
5874 !gdbarch_char_signed (gdbarch
), "char");
5875 TYPE_NOSIGN (objfile_type
->builtin_char
) = 1;
5876 objfile_type
->builtin_signed_char
5877 = init_integer_type (objfile
, TARGET_CHAR_BIT
,
5879 objfile_type
->builtin_unsigned_char
5880 = init_integer_type (objfile
, TARGET_CHAR_BIT
,
5881 1, "unsigned char");
5882 objfile_type
->builtin_short
5883 = init_integer_type (objfile
, gdbarch_short_bit (gdbarch
),
5885 objfile_type
->builtin_unsigned_short
5886 = init_integer_type (objfile
, gdbarch_short_bit (gdbarch
),
5887 1, "unsigned short");
5888 objfile_type
->builtin_int
5889 = init_integer_type (objfile
, gdbarch_int_bit (gdbarch
),
5891 objfile_type
->builtin_unsigned_int
5892 = init_integer_type (objfile
, gdbarch_int_bit (gdbarch
),
5894 objfile_type
->builtin_long
5895 = init_integer_type (objfile
, gdbarch_long_bit (gdbarch
),
5897 objfile_type
->builtin_unsigned_long
5898 = init_integer_type (objfile
, gdbarch_long_bit (gdbarch
),
5899 1, "unsigned long");
5900 objfile_type
->builtin_long_long
5901 = init_integer_type (objfile
, gdbarch_long_long_bit (gdbarch
),
5903 objfile_type
->builtin_unsigned_long_long
5904 = init_integer_type (objfile
, gdbarch_long_long_bit (gdbarch
),
5905 1, "unsigned long long");
5906 objfile_type
->builtin_float
5907 = init_float_type (objfile
, gdbarch_float_bit (gdbarch
),
5908 "float", gdbarch_float_format (gdbarch
));
5909 objfile_type
->builtin_double
5910 = init_float_type (objfile
, gdbarch_double_bit (gdbarch
),
5911 "double", gdbarch_double_format (gdbarch
));
5912 objfile_type
->builtin_long_double
5913 = init_float_type (objfile
, gdbarch_long_double_bit (gdbarch
),
5914 "long double", gdbarch_long_double_format (gdbarch
));
5916 /* This type represents a type that was unrecognized in symbol read-in. */
5917 objfile_type
->builtin_error
5918 = init_type (objfile
, TYPE_CODE_ERROR
, 0, "<unknown type>");
5920 /* The following set of types is used for symbols with no
5921 debug information. */
5922 objfile_type
->nodebug_text_symbol
5923 = init_type (objfile
, TYPE_CODE_FUNC
, TARGET_CHAR_BIT
,
5924 "<text variable, no debug info>");
5925 objfile_type
->nodebug_text_gnu_ifunc_symbol
5926 = init_type (objfile
, TYPE_CODE_FUNC
, TARGET_CHAR_BIT
,
5927 "<text gnu-indirect-function variable, no debug info>");
5928 TYPE_GNU_IFUNC (objfile_type
->nodebug_text_gnu_ifunc_symbol
) = 1;
5929 objfile_type
->nodebug_got_plt_symbol
5930 = init_pointer_type (objfile
, gdbarch_addr_bit (gdbarch
),
5931 "<text from jump slot in .got.plt, no debug info>",
5932 objfile_type
->nodebug_text_symbol
);
5933 objfile_type
->nodebug_data_symbol
5934 = init_nodebug_var_type (objfile
, "<data variable, no debug info>");
5935 objfile_type
->nodebug_unknown_symbol
5936 = init_nodebug_var_type (objfile
, "<variable (not text or data), no debug info>");
5937 objfile_type
->nodebug_tls_symbol
5938 = init_nodebug_var_type (objfile
, "<thread local variable, no debug info>");
5940 /* NOTE: on some targets, addresses and pointers are not necessarily
5944 - gdb's `struct type' always describes the target's
5946 - gdb's `struct value' objects should always hold values in
5948 - gdb's CORE_ADDR values are addresses in the unified virtual
5949 address space that the assembler and linker work with. Thus,
5950 since target_read_memory takes a CORE_ADDR as an argument, it
5951 can access any memory on the target, even if the processor has
5952 separate code and data address spaces.
5954 In this context, objfile_type->builtin_core_addr is a bit odd:
5955 it's a target type for a value the target will never see. It's
5956 only used to hold the values of (typeless) linker symbols, which
5957 are indeed in the unified virtual address space. */
5959 objfile_type
->builtin_core_addr
5960 = init_integer_type (objfile
, gdbarch_addr_bit (gdbarch
), 1,
5963 objfile_type_data
.set (objfile
, objfile_type
);
5964 return objfile_type
;
5967 void _initialize_gdbtypes ();
5969 _initialize_gdbtypes ()
5971 gdbtypes_data
= gdbarch_data_register_post_init (gdbtypes_post_init
);
5973 add_setshow_zuinteger_cmd ("overload", no_class
, &overload_debug
,
5974 _("Set debugging of C++ overloading."),
5975 _("Show debugging of C++ overloading."),
5976 _("When enabled, ranking of the "
5977 "functions is displayed."),
5979 show_overload_debug
,
5980 &setdebuglist
, &showdebuglist
);
5982 /* Add user knob for controlling resolution of opaque types. */
5983 add_setshow_boolean_cmd ("opaque-type-resolution", class_support
,
5984 &opaque_type_resolution
,
5985 _("Set resolution of opaque struct/class/union"
5986 " types (if set before loading symbols)."),
5987 _("Show resolution of opaque struct/class/union"
5988 " types (if set before loading symbols)."),
5990 show_opaque_type_resolution
,
5991 &setlist
, &showlist
);
5993 /* Add an option to permit non-strict type checking. */
5994 add_setshow_boolean_cmd ("type", class_support
,
5995 &strict_type_checking
,
5996 _("Set strict type checking."),
5997 _("Show strict type checking."),
5999 show_strict_type_checking
,
6000 &setchecklist
, &showchecklist
);