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_CODE (type
) = 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_CODE (type
) = 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 TYPE_CODE (ntype
) = 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 TYPE_CODE (ntype
) = 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 TYPE_CODE (ntype
) = 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 (TYPE_CODE (check_typedef (param_types
[nparams
- 1]))
557 /* Caller should have ensured this. */
558 gdb_assert (nparams
== 0);
559 TYPE_PROTOTYPED (fn
) = 1;
562 TYPE_PROTOTYPED (fn
) = 1;
565 TYPE_NFIELDS (fn
) = 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 TYPE_CODE (mtype
) = 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 (TYPE_CODE (index_type
) != 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 TYPE_CODE (result_type
) = 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 (type
))
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_NFIELDS (type
) > 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_NFIELDS (type
); 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
) == TYPE_CODE_ENUM
)
1162 for (i
= 0; i
< TYPE_NFIELDS (type
); i
+= 1)
1164 if (val
== TYPE_FIELD_ENUMVAL (type
, i
))
1170 /* Invalid enumeration value. */
1180 /* Create an array type using either a blank type supplied in
1181 RESULT_TYPE, or creating a new type, inheriting the objfile from
1184 Elements will be of type ELEMENT_TYPE, the indices will be of type
1187 BYTE_STRIDE_PROP, when not NULL, provides the array's byte stride.
1188 This byte stride property is added to the resulting array type
1189 as a DYN_PROP_BYTE_STRIDE. As a consequence, the BYTE_STRIDE_PROP
1190 argument can only be used to create types that are objfile-owned
1191 (see add_dyn_prop), meaning that either this function must be called
1192 with an objfile-owned RESULT_TYPE, or an objfile-owned RANGE_TYPE.
1194 BIT_STRIDE is taken into account only when BYTE_STRIDE_PROP is NULL.
1195 If BIT_STRIDE is not zero, build a packed array type whose element
1196 size is BIT_STRIDE. Otherwise, ignore this parameter.
1198 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
1199 sure it is TYPE_CODE_UNDEF before we bash it into an array
1203 create_array_type_with_stride (struct type
*result_type
,
1204 struct type
*element_type
,
1205 struct type
*range_type
,
1206 struct dynamic_prop
*byte_stride_prop
,
1207 unsigned int bit_stride
)
1209 if (byte_stride_prop
!= NULL
1210 && byte_stride_prop
->kind
== PROP_CONST
)
1212 /* The byte stride is actually not dynamic. Pretend we were
1213 called with bit_stride set instead of byte_stride_prop.
1214 This will give us the same result type, while avoiding
1215 the need to handle this as a special case. */
1216 bit_stride
= byte_stride_prop
->data
.const_val
* 8;
1217 byte_stride_prop
= NULL
;
1220 if (result_type
== NULL
)
1221 result_type
= alloc_type_copy (range_type
);
1223 TYPE_CODE (result_type
) = TYPE_CODE_ARRAY
;
1224 TYPE_TARGET_TYPE (result_type
) = element_type
;
1225 if (byte_stride_prop
== NULL
1226 && has_static_range (TYPE_RANGE_DATA (range_type
))
1227 && (!type_not_associated (result_type
)
1228 && !type_not_allocated (result_type
)))
1230 LONGEST low_bound
, high_bound
;
1233 /* If the array itself doesn't provide a stride value then take
1234 whatever stride the range provides. Don't update BIT_STRIDE as
1235 we don't want to place the stride value from the range into this
1236 arrays bit size field. */
1237 stride
= bit_stride
;
1239 stride
= TYPE_BIT_STRIDE (range_type
);
1241 if (get_discrete_bounds (range_type
, &low_bound
, &high_bound
) < 0)
1242 low_bound
= high_bound
= 0;
1243 element_type
= check_typedef (element_type
);
1244 /* Be careful when setting the array length. Ada arrays can be
1245 empty arrays with the high_bound being smaller than the low_bound.
1246 In such cases, the array length should be zero. */
1247 if (high_bound
< low_bound
)
1248 TYPE_LENGTH (result_type
) = 0;
1249 else if (stride
!= 0)
1251 /* Ensure that the type length is always positive, even in the
1252 case where (for example in Fortran) we have a negative
1253 stride. It is possible to have a single element array with a
1254 negative stride in Fortran (this doesn't mean anything
1255 special, it's still just a single element array) so do
1256 consider that case when touching this code. */
1257 LONGEST element_count
= std::abs (high_bound
- low_bound
+ 1);
1258 TYPE_LENGTH (result_type
)
1259 = ((std::abs (stride
) * element_count
) + 7) / 8;
1262 TYPE_LENGTH (result_type
) =
1263 TYPE_LENGTH (element_type
) * (high_bound
- low_bound
+ 1);
1267 /* This type is dynamic and its length needs to be computed
1268 on demand. In the meantime, avoid leaving the TYPE_LENGTH
1269 undefined by setting it to zero. Although we are not expected
1270 to trust TYPE_LENGTH in this case, setting the size to zero
1271 allows us to avoid allocating objects of random sizes in case
1272 we accidently do. */
1273 TYPE_LENGTH (result_type
) = 0;
1276 TYPE_NFIELDS (result_type
) = 1;
1277 TYPE_FIELDS (result_type
) =
1278 (struct field
*) TYPE_ZALLOC (result_type
, sizeof (struct field
));
1279 TYPE_INDEX_TYPE (result_type
) = range_type
;
1280 if (byte_stride_prop
!= NULL
)
1281 add_dyn_prop (DYN_PROP_BYTE_STRIDE
, *byte_stride_prop
, result_type
);
1282 else if (bit_stride
> 0)
1283 TYPE_FIELD_BITSIZE (result_type
, 0) = bit_stride
;
1285 /* TYPE_TARGET_STUB will take care of zero length arrays. */
1286 if (TYPE_LENGTH (result_type
) == 0)
1287 TYPE_TARGET_STUB (result_type
) = 1;
1292 /* Same as create_array_type_with_stride but with no bit_stride
1293 (BIT_STRIDE = 0), thus building an unpacked array. */
1296 create_array_type (struct type
*result_type
,
1297 struct type
*element_type
,
1298 struct type
*range_type
)
1300 return create_array_type_with_stride (result_type
, element_type
,
1301 range_type
, NULL
, 0);
1305 lookup_array_range_type (struct type
*element_type
,
1306 LONGEST low_bound
, LONGEST high_bound
)
1308 struct type
*index_type
;
1309 struct type
*range_type
;
1311 if (TYPE_OBJFILE_OWNED (element_type
))
1312 index_type
= objfile_type (TYPE_OWNER (element_type
).objfile
)->builtin_int
;
1314 index_type
= builtin_type (get_type_arch (element_type
))->builtin_int
;
1315 range_type
= create_static_range_type (NULL
, index_type
,
1316 low_bound
, high_bound
);
1318 return create_array_type (NULL
, element_type
, range_type
);
1321 /* Create a string type using either a blank type supplied in
1322 RESULT_TYPE, or creating a new type. String types are similar
1323 enough to array of char types that we can use create_array_type to
1324 build the basic type and then bash it into a string type.
1326 For fixed length strings, the range type contains 0 as the lower
1327 bound and the length of the string minus one as the upper bound.
1329 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
1330 sure it is TYPE_CODE_UNDEF before we bash it into a string
1334 create_string_type (struct type
*result_type
,
1335 struct type
*string_char_type
,
1336 struct type
*range_type
)
1338 result_type
= create_array_type (result_type
,
1341 TYPE_CODE (result_type
) = TYPE_CODE_STRING
;
1346 lookup_string_range_type (struct type
*string_char_type
,
1347 LONGEST low_bound
, LONGEST high_bound
)
1349 struct type
*result_type
;
1351 result_type
= lookup_array_range_type (string_char_type
,
1352 low_bound
, high_bound
);
1353 TYPE_CODE (result_type
) = TYPE_CODE_STRING
;
1358 create_set_type (struct type
*result_type
, struct type
*domain_type
)
1360 if (result_type
== NULL
)
1361 result_type
= alloc_type_copy (domain_type
);
1363 TYPE_CODE (result_type
) = TYPE_CODE_SET
;
1364 TYPE_NFIELDS (result_type
) = 1;
1365 TYPE_FIELDS (result_type
)
1366 = (struct field
*) TYPE_ZALLOC (result_type
, sizeof (struct field
));
1368 if (!TYPE_STUB (domain_type
))
1370 LONGEST low_bound
, high_bound
, bit_length
;
1372 if (get_discrete_bounds (domain_type
, &low_bound
, &high_bound
) < 0)
1373 low_bound
= high_bound
= 0;
1374 bit_length
= high_bound
- low_bound
+ 1;
1375 TYPE_LENGTH (result_type
)
1376 = (bit_length
+ TARGET_CHAR_BIT
- 1) / TARGET_CHAR_BIT
;
1378 TYPE_UNSIGNED (result_type
) = 1;
1380 TYPE_FIELD_TYPE (result_type
, 0) = domain_type
;
1385 /* Convert ARRAY_TYPE to a vector type. This may modify ARRAY_TYPE
1386 and any array types nested inside it. */
1389 make_vector_type (struct type
*array_type
)
1391 struct type
*inner_array
, *elt_type
;
1394 /* Find the innermost array type, in case the array is
1395 multi-dimensional. */
1396 inner_array
= array_type
;
1397 while (TYPE_CODE (TYPE_TARGET_TYPE (inner_array
)) == TYPE_CODE_ARRAY
)
1398 inner_array
= TYPE_TARGET_TYPE (inner_array
);
1400 elt_type
= TYPE_TARGET_TYPE (inner_array
);
1401 if (TYPE_CODE (elt_type
) == TYPE_CODE_INT
)
1403 flags
= TYPE_INSTANCE_FLAGS (elt_type
) | TYPE_INSTANCE_FLAG_NOTTEXT
;
1404 elt_type
= make_qualified_type (elt_type
, flags
, NULL
);
1405 TYPE_TARGET_TYPE (inner_array
) = elt_type
;
1408 TYPE_VECTOR (array_type
) = 1;
1412 init_vector_type (struct type
*elt_type
, int n
)
1414 struct type
*array_type
;
1416 array_type
= lookup_array_range_type (elt_type
, 0, n
- 1);
1417 make_vector_type (array_type
);
1421 /* Internal routine called by TYPE_SELF_TYPE to return the type that TYPE
1422 belongs to. In c++ this is the class of "this", but TYPE_THIS_TYPE is too
1423 confusing. "self" is a common enough replacement for "this".
1424 TYPE must be one of TYPE_CODE_METHODPTR, TYPE_CODE_MEMBERPTR, or
1425 TYPE_CODE_METHOD. */
1428 internal_type_self_type (struct type
*type
)
1430 switch (TYPE_CODE (type
))
1432 case TYPE_CODE_METHODPTR
:
1433 case TYPE_CODE_MEMBERPTR
:
1434 if (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_NONE
)
1436 gdb_assert (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_SELF_TYPE
);
1437 return TYPE_MAIN_TYPE (type
)->type_specific
.self_type
;
1438 case TYPE_CODE_METHOD
:
1439 if (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_NONE
)
1441 gdb_assert (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_FUNC
);
1442 return TYPE_MAIN_TYPE (type
)->type_specific
.func_stuff
->self_type
;
1444 gdb_assert_not_reached ("bad type");
1448 /* Set the type of the class that TYPE belongs to.
1449 In c++ this is the class of "this".
1450 TYPE must be one of TYPE_CODE_METHODPTR, TYPE_CODE_MEMBERPTR, or
1451 TYPE_CODE_METHOD. */
1454 set_type_self_type (struct type
*type
, struct type
*self_type
)
1456 switch (TYPE_CODE (type
))
1458 case TYPE_CODE_METHODPTR
:
1459 case TYPE_CODE_MEMBERPTR
:
1460 if (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_NONE
)
1461 TYPE_SPECIFIC_FIELD (type
) = TYPE_SPECIFIC_SELF_TYPE
;
1462 gdb_assert (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_SELF_TYPE
);
1463 TYPE_MAIN_TYPE (type
)->type_specific
.self_type
= self_type
;
1465 case TYPE_CODE_METHOD
:
1466 if (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_NONE
)
1467 INIT_FUNC_SPECIFIC (type
);
1468 gdb_assert (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_FUNC
);
1469 TYPE_MAIN_TYPE (type
)->type_specific
.func_stuff
->self_type
= self_type
;
1472 gdb_assert_not_reached ("bad type");
1476 /* Smash TYPE to be a type of pointers to members of SELF_TYPE with type
1477 TO_TYPE. A member pointer is a wierd thing -- it amounts to a
1478 typed offset into a struct, e.g. "an int at offset 8". A MEMBER
1479 TYPE doesn't include the offset (that's the value of the MEMBER
1480 itself), but does include the structure type into which it points
1483 When "smashing" the type, we preserve the objfile that the old type
1484 pointed to, since we aren't changing where the type is actually
1488 smash_to_memberptr_type (struct type
*type
, struct type
*self_type
,
1489 struct type
*to_type
)
1492 TYPE_CODE (type
) = TYPE_CODE_MEMBERPTR
;
1493 TYPE_TARGET_TYPE (type
) = to_type
;
1494 set_type_self_type (type
, self_type
);
1495 /* Assume that a data member pointer is the same size as a normal
1498 = gdbarch_ptr_bit (get_type_arch (to_type
)) / TARGET_CHAR_BIT
;
1501 /* Smash TYPE to be a type of pointer to methods type TO_TYPE.
1503 When "smashing" the type, we preserve the objfile that the old type
1504 pointed to, since we aren't changing where the type is actually
1508 smash_to_methodptr_type (struct type
*type
, struct type
*to_type
)
1511 TYPE_CODE (type
) = TYPE_CODE_METHODPTR
;
1512 TYPE_TARGET_TYPE (type
) = to_type
;
1513 set_type_self_type (type
, TYPE_SELF_TYPE (to_type
));
1514 TYPE_LENGTH (type
) = cplus_method_ptr_size (to_type
);
1517 /* Smash TYPE to be a type of method of SELF_TYPE with type TO_TYPE.
1518 METHOD just means `function that gets an extra "this" argument'.
1520 When "smashing" the type, we preserve the objfile that the old type
1521 pointed to, since we aren't changing where the type is actually
1525 smash_to_method_type (struct type
*type
, struct type
*self_type
,
1526 struct type
*to_type
, struct field
*args
,
1527 int nargs
, int varargs
)
1530 TYPE_CODE (type
) = TYPE_CODE_METHOD
;
1531 TYPE_TARGET_TYPE (type
) = to_type
;
1532 set_type_self_type (type
, self_type
);
1533 TYPE_FIELDS (type
) = args
;
1534 TYPE_NFIELDS (type
) = nargs
;
1536 TYPE_VARARGS (type
) = 1;
1537 TYPE_LENGTH (type
) = 1; /* In practice, this is never needed. */
1540 /* A wrapper of TYPE_NAME which calls error if the type is anonymous.
1541 Since GCC PR debug/47510 DWARF provides associated information to detect the
1542 anonymous class linkage name from its typedef.
1544 Parameter TYPE should not yet have CHECK_TYPEDEF applied, this function will
1548 type_name_or_error (struct type
*type
)
1550 struct type
*saved_type
= type
;
1552 struct objfile
*objfile
;
1554 type
= check_typedef (type
);
1556 name
= TYPE_NAME (type
);
1560 name
= TYPE_NAME (saved_type
);
1561 objfile
= TYPE_OBJFILE (saved_type
);
1562 error (_("Invalid anonymous type %s [in module %s], GCC PR debug/47510 bug?"),
1563 name
? name
: "<anonymous>",
1564 objfile
? objfile_name (objfile
) : "<arch>");
1567 /* Lookup a typedef or primitive type named NAME, visible in lexical
1568 block BLOCK. If NOERR is nonzero, return zero if NAME is not
1569 suitably defined. */
1572 lookup_typename (const struct language_defn
*language
,
1574 const struct block
*block
, int noerr
)
1578 sym
= lookup_symbol_in_language (name
, block
, VAR_DOMAIN
,
1579 language
->la_language
, NULL
).symbol
;
1580 if (sym
!= NULL
&& SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
1581 return SYMBOL_TYPE (sym
);
1585 error (_("No type named %s."), name
);
1589 lookup_unsigned_typename (const struct language_defn
*language
,
1592 char *uns
= (char *) alloca (strlen (name
) + 10);
1594 strcpy (uns
, "unsigned ");
1595 strcpy (uns
+ 9, name
);
1596 return lookup_typename (language
, uns
, NULL
, 0);
1600 lookup_signed_typename (const struct language_defn
*language
, const char *name
)
1603 char *uns
= (char *) alloca (strlen (name
) + 8);
1605 strcpy (uns
, "signed ");
1606 strcpy (uns
+ 7, name
);
1607 t
= lookup_typename (language
, uns
, NULL
, 1);
1608 /* If we don't find "signed FOO" just try again with plain "FOO". */
1611 return lookup_typename (language
, name
, NULL
, 0);
1614 /* Lookup a structure type named "struct NAME",
1615 visible in lexical block BLOCK. */
1618 lookup_struct (const char *name
, const struct block
*block
)
1622 sym
= lookup_symbol (name
, block
, STRUCT_DOMAIN
, 0).symbol
;
1626 error (_("No struct type named %s."), name
);
1628 if (TYPE_CODE (SYMBOL_TYPE (sym
)) != TYPE_CODE_STRUCT
)
1630 error (_("This context has class, union or enum %s, not a struct."),
1633 return (SYMBOL_TYPE (sym
));
1636 /* Lookup a union type named "union NAME",
1637 visible in lexical block BLOCK. */
1640 lookup_union (const char *name
, const struct block
*block
)
1645 sym
= lookup_symbol (name
, block
, STRUCT_DOMAIN
, 0).symbol
;
1648 error (_("No union type named %s."), name
);
1650 t
= SYMBOL_TYPE (sym
);
1652 if (TYPE_CODE (t
) == TYPE_CODE_UNION
)
1655 /* If we get here, it's not a union. */
1656 error (_("This context has class, struct or enum %s, not a union."),
1660 /* Lookup an enum type named "enum NAME",
1661 visible in lexical block BLOCK. */
1664 lookup_enum (const char *name
, const struct block
*block
)
1668 sym
= lookup_symbol (name
, block
, STRUCT_DOMAIN
, 0).symbol
;
1671 error (_("No enum type named %s."), name
);
1673 if (TYPE_CODE (SYMBOL_TYPE (sym
)) != TYPE_CODE_ENUM
)
1675 error (_("This context has class, struct or union %s, not an enum."),
1678 return (SYMBOL_TYPE (sym
));
1681 /* Lookup a template type named "template NAME<TYPE>",
1682 visible in lexical block BLOCK. */
1685 lookup_template_type (const char *name
, struct type
*type
,
1686 const struct block
*block
)
1689 char *nam
= (char *)
1690 alloca (strlen (name
) + strlen (TYPE_NAME (type
)) + 4);
1694 strcat (nam
, TYPE_NAME (type
));
1695 strcat (nam
, " >"); /* FIXME, extra space still introduced in gcc? */
1697 sym
= lookup_symbol (nam
, block
, VAR_DOMAIN
, 0).symbol
;
1701 error (_("No template type named %s."), name
);
1703 if (TYPE_CODE (SYMBOL_TYPE (sym
)) != TYPE_CODE_STRUCT
)
1705 error (_("This context has class, union or enum %s, not a struct."),
1708 return (SYMBOL_TYPE (sym
));
1711 /* See gdbtypes.h. */
1714 lookup_struct_elt (struct type
*type
, const char *name
, int noerr
)
1720 type
= check_typedef (type
);
1721 if (TYPE_CODE (type
) != TYPE_CODE_PTR
1722 && TYPE_CODE (type
) != TYPE_CODE_REF
)
1724 type
= TYPE_TARGET_TYPE (type
);
1727 if (TYPE_CODE (type
) != TYPE_CODE_STRUCT
1728 && TYPE_CODE (type
) != TYPE_CODE_UNION
)
1730 std::string type_name
= type_to_string (type
);
1731 error (_("Type %s is not a structure or union type."),
1732 type_name
.c_str ());
1735 for (i
= TYPE_NFIELDS (type
) - 1; i
>= TYPE_N_BASECLASSES (type
); i
--)
1737 const char *t_field_name
= TYPE_FIELD_NAME (type
, i
);
1739 if (t_field_name
&& (strcmp_iw (t_field_name
, name
) == 0))
1741 return {&TYPE_FIELD (type
, i
), TYPE_FIELD_BITPOS (type
, i
)};
1743 else if (!t_field_name
|| *t_field_name
== '\0')
1746 = lookup_struct_elt (TYPE_FIELD_TYPE (type
, i
), name
, 1);
1747 if (elt
.field
!= NULL
)
1749 elt
.offset
+= TYPE_FIELD_BITPOS (type
, i
);
1755 /* OK, it's not in this class. Recursively check the baseclasses. */
1756 for (i
= TYPE_N_BASECLASSES (type
) - 1; i
>= 0; i
--)
1758 struct_elt elt
= lookup_struct_elt (TYPE_BASECLASS (type
, i
), name
, 1);
1759 if (elt
.field
!= NULL
)
1764 return {nullptr, 0};
1766 std::string type_name
= type_to_string (type
);
1767 error (_("Type %s has no component named %s."), type_name
.c_str (), name
);
1770 /* See gdbtypes.h. */
1773 lookup_struct_elt_type (struct type
*type
, const char *name
, int noerr
)
1775 struct_elt elt
= lookup_struct_elt (type
, name
, noerr
);
1776 if (elt
.field
!= NULL
)
1777 return FIELD_TYPE (*elt
.field
);
1782 /* Store in *MAX the largest number representable by unsigned integer type
1786 get_unsigned_type_max (struct type
*type
, ULONGEST
*max
)
1790 type
= check_typedef (type
);
1791 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_INT
&& TYPE_UNSIGNED (type
));
1792 gdb_assert (TYPE_LENGTH (type
) <= sizeof (ULONGEST
));
1794 /* Written this way to avoid overflow. */
1795 n
= TYPE_LENGTH (type
) * TARGET_CHAR_BIT
;
1796 *max
= ((((ULONGEST
) 1 << (n
- 1)) - 1) << 1) | 1;
1799 /* Store in *MIN, *MAX the smallest and largest numbers representable by
1800 signed integer type TYPE. */
1803 get_signed_type_minmax (struct type
*type
, LONGEST
*min
, LONGEST
*max
)
1807 type
= check_typedef (type
);
1808 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_INT
&& !TYPE_UNSIGNED (type
));
1809 gdb_assert (TYPE_LENGTH (type
) <= sizeof (LONGEST
));
1811 n
= TYPE_LENGTH (type
) * TARGET_CHAR_BIT
;
1812 *min
= -((ULONGEST
) 1 << (n
- 1));
1813 *max
= ((ULONGEST
) 1 << (n
- 1)) - 1;
1816 /* Internal routine called by TYPE_VPTR_FIELDNO to return the value of
1817 cplus_stuff.vptr_fieldno.
1819 cplus_stuff is initialized to cplus_struct_default which does not
1820 set vptr_fieldno to -1 for portability reasons (IWBN to use C99
1821 designated initializers). We cope with that here. */
1824 internal_type_vptr_fieldno (struct type
*type
)
1826 type
= check_typedef (type
);
1827 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_STRUCT
1828 || TYPE_CODE (type
) == TYPE_CODE_UNION
);
1829 if (!HAVE_CPLUS_STRUCT (type
))
1831 return TYPE_RAW_CPLUS_SPECIFIC (type
)->vptr_fieldno
;
1834 /* Set the value of cplus_stuff.vptr_fieldno. */
1837 set_type_vptr_fieldno (struct type
*type
, int fieldno
)
1839 type
= check_typedef (type
);
1840 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_STRUCT
1841 || TYPE_CODE (type
) == TYPE_CODE_UNION
);
1842 if (!HAVE_CPLUS_STRUCT (type
))
1843 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
1844 TYPE_RAW_CPLUS_SPECIFIC (type
)->vptr_fieldno
= fieldno
;
1847 /* Internal routine called by TYPE_VPTR_BASETYPE to return the value of
1848 cplus_stuff.vptr_basetype. */
1851 internal_type_vptr_basetype (struct type
*type
)
1853 type
= check_typedef (type
);
1854 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_STRUCT
1855 || TYPE_CODE (type
) == TYPE_CODE_UNION
);
1856 gdb_assert (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_CPLUS_STUFF
);
1857 return TYPE_RAW_CPLUS_SPECIFIC (type
)->vptr_basetype
;
1860 /* Set the value of cplus_stuff.vptr_basetype. */
1863 set_type_vptr_basetype (struct type
*type
, struct type
*basetype
)
1865 type
= check_typedef (type
);
1866 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_STRUCT
1867 || TYPE_CODE (type
) == TYPE_CODE_UNION
);
1868 if (!HAVE_CPLUS_STRUCT (type
))
1869 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
1870 TYPE_RAW_CPLUS_SPECIFIC (type
)->vptr_basetype
= basetype
;
1873 /* Lookup the vptr basetype/fieldno values for TYPE.
1874 If found store vptr_basetype in *BASETYPEP if non-NULL, and return
1875 vptr_fieldno. Also, if found and basetype is from the same objfile,
1877 If not found, return -1 and ignore BASETYPEP.
1878 Callers should be aware that in some cases (for example,
1879 the type or one of its baseclasses is a stub type and we are
1880 debugging a .o file, or the compiler uses DWARF-2 and is not GCC),
1881 this function will not be able to find the
1882 virtual function table pointer, and vptr_fieldno will remain -1 and
1883 vptr_basetype will remain NULL or incomplete. */
1886 get_vptr_fieldno (struct type
*type
, struct type
**basetypep
)
1888 type
= check_typedef (type
);
1890 if (TYPE_VPTR_FIELDNO (type
) < 0)
1894 /* We must start at zero in case the first (and only) baseclass
1895 is virtual (and hence we cannot share the table pointer). */
1896 for (i
= 0; i
< TYPE_N_BASECLASSES (type
); i
++)
1898 struct type
*baseclass
= check_typedef (TYPE_BASECLASS (type
, i
));
1900 struct type
*basetype
;
1902 fieldno
= get_vptr_fieldno (baseclass
, &basetype
);
1905 /* If the type comes from a different objfile we can't cache
1906 it, it may have a different lifetime. PR 2384 */
1907 if (TYPE_OBJFILE (type
) == TYPE_OBJFILE (basetype
))
1909 set_type_vptr_fieldno (type
, fieldno
);
1910 set_type_vptr_basetype (type
, basetype
);
1913 *basetypep
= basetype
;
1924 *basetypep
= TYPE_VPTR_BASETYPE (type
);
1925 return TYPE_VPTR_FIELDNO (type
);
1930 stub_noname_complaint (void)
1932 complaint (_("stub type has NULL name"));
1935 /* Return nonzero if TYPE has a DYN_PROP_BYTE_STRIDE dynamic property
1936 attached to it, and that property has a non-constant value. */
1939 array_type_has_dynamic_stride (struct type
*type
)
1941 struct dynamic_prop
*prop
= get_dyn_prop (DYN_PROP_BYTE_STRIDE
, type
);
1943 return (prop
!= NULL
&& prop
->kind
!= PROP_CONST
);
1946 /* Worker for is_dynamic_type. */
1949 is_dynamic_type_internal (struct type
*type
, int top_level
)
1951 type
= check_typedef (type
);
1953 /* We only want to recognize references at the outermost level. */
1954 if (top_level
&& TYPE_CODE (type
) == TYPE_CODE_REF
)
1955 type
= check_typedef (TYPE_TARGET_TYPE (type
));
1957 /* Types that have a dynamic TYPE_DATA_LOCATION are considered
1958 dynamic, even if the type itself is statically defined.
1959 From a user's point of view, this may appear counter-intuitive;
1960 but it makes sense in this context, because the point is to determine
1961 whether any part of the type needs to be resolved before it can
1963 if (TYPE_DATA_LOCATION (type
) != NULL
1964 && (TYPE_DATA_LOCATION_KIND (type
) == PROP_LOCEXPR
1965 || TYPE_DATA_LOCATION_KIND (type
) == PROP_LOCLIST
))
1968 if (TYPE_ASSOCIATED_PROP (type
))
1971 if (TYPE_ALLOCATED_PROP (type
))
1974 struct dynamic_prop
*prop
= get_dyn_prop (DYN_PROP_VARIANT_PARTS
, type
);
1975 if (prop
!= nullptr && prop
->kind
!= PROP_TYPE
)
1978 switch (TYPE_CODE (type
))
1980 case TYPE_CODE_RANGE
:
1982 /* A range type is obviously dynamic if it has at least one
1983 dynamic bound. But also consider the range type to be
1984 dynamic when its subtype is dynamic, even if the bounds
1985 of the range type are static. It allows us to assume that
1986 the subtype of a static range type is also static. */
1987 return (!has_static_range (TYPE_RANGE_DATA (type
))
1988 || is_dynamic_type_internal (TYPE_TARGET_TYPE (type
), 0));
1991 case TYPE_CODE_STRING
:
1992 /* Strings are very much like an array of characters, and can be
1993 treated as one here. */
1994 case TYPE_CODE_ARRAY
:
1996 gdb_assert (TYPE_NFIELDS (type
) == 1);
1998 /* The array is dynamic if either the bounds are dynamic... */
1999 if (is_dynamic_type_internal (TYPE_INDEX_TYPE (type
), 0))
2001 /* ... or the elements it contains have a dynamic contents... */
2002 if (is_dynamic_type_internal (TYPE_TARGET_TYPE (type
), 0))
2004 /* ... or if it has a dynamic stride... */
2005 if (array_type_has_dynamic_stride (type
))
2010 case TYPE_CODE_STRUCT
:
2011 case TYPE_CODE_UNION
:
2015 for (i
= 0; i
< TYPE_NFIELDS (type
); ++i
)
2016 if (!field_is_static (&TYPE_FIELD (type
, i
))
2017 && is_dynamic_type_internal (TYPE_FIELD_TYPE (type
, i
), 0))
2026 /* See gdbtypes.h. */
2029 is_dynamic_type (struct type
*type
)
2031 return is_dynamic_type_internal (type
, 1);
2034 static struct type
*resolve_dynamic_type_internal
2035 (struct type
*type
, struct property_addr_info
*addr_stack
, int top_level
);
2037 /* Given a dynamic range type (dyn_range_type) and a stack of
2038 struct property_addr_info elements, return a static version
2041 static struct type
*
2042 resolve_dynamic_range (struct type
*dyn_range_type
,
2043 struct property_addr_info
*addr_stack
)
2046 struct type
*static_range_type
, *static_target_type
;
2047 const struct dynamic_prop
*prop
;
2048 struct dynamic_prop low_bound
, high_bound
, stride
;
2050 gdb_assert (TYPE_CODE (dyn_range_type
) == TYPE_CODE_RANGE
);
2052 prop
= &TYPE_RANGE_DATA (dyn_range_type
)->low
;
2053 if (dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2055 low_bound
.kind
= PROP_CONST
;
2056 low_bound
.data
.const_val
= value
;
2060 low_bound
.kind
= PROP_UNDEFINED
;
2061 low_bound
.data
.const_val
= 0;
2064 prop
= &TYPE_RANGE_DATA (dyn_range_type
)->high
;
2065 if (dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2067 high_bound
.kind
= PROP_CONST
;
2068 high_bound
.data
.const_val
= value
;
2070 if (TYPE_RANGE_DATA (dyn_range_type
)->flag_upper_bound_is_count
)
2071 high_bound
.data
.const_val
2072 = low_bound
.data
.const_val
+ high_bound
.data
.const_val
- 1;
2076 high_bound
.kind
= PROP_UNDEFINED
;
2077 high_bound
.data
.const_val
= 0;
2080 bool byte_stride_p
= TYPE_RANGE_DATA (dyn_range_type
)->flag_is_byte_stride
;
2081 prop
= &TYPE_RANGE_DATA (dyn_range_type
)->stride
;
2082 if (dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2084 stride
.kind
= PROP_CONST
;
2085 stride
.data
.const_val
= value
;
2087 /* If we have a bit stride that is not an exact number of bytes then
2088 I really don't think this is going to work with current GDB, the
2089 array indexing code in GDB seems to be pretty heavily tied to byte
2090 offsets right now. Assuming 8 bits in a byte. */
2091 struct gdbarch
*gdbarch
= get_type_arch (dyn_range_type
);
2092 int unit_size
= gdbarch_addressable_memory_unit_size (gdbarch
);
2093 if (!byte_stride_p
&& (value
% (unit_size
* 8)) != 0)
2094 error (_("bit strides that are not a multiple of the byte size "
2095 "are currently not supported"));
2099 stride
.kind
= PROP_UNDEFINED
;
2100 stride
.data
.const_val
= 0;
2101 byte_stride_p
= true;
2105 = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (dyn_range_type
),
2107 LONGEST bias
= TYPE_RANGE_DATA (dyn_range_type
)->bias
;
2108 static_range_type
= create_range_type_with_stride
2109 (copy_type (dyn_range_type
), static_target_type
,
2110 &low_bound
, &high_bound
, bias
, &stride
, byte_stride_p
);
2111 TYPE_RANGE_DATA (static_range_type
)->flag_bound_evaluated
= 1;
2112 return static_range_type
;
2115 /* Resolves dynamic bound values of an array or string type TYPE to static
2116 ones. ADDR_STACK is a stack of struct property_addr_info to be used if
2117 needed during the dynamic resolution. */
2119 static struct type
*
2120 resolve_dynamic_array_or_string (struct type
*type
,
2121 struct property_addr_info
*addr_stack
)
2124 struct type
*elt_type
;
2125 struct type
*range_type
;
2126 struct type
*ary_dim
;
2127 struct dynamic_prop
*prop
;
2128 unsigned int bit_stride
= 0;
2130 /* For dynamic type resolution strings can be treated like arrays of
2132 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_ARRAY
2133 || TYPE_CODE (type
) == TYPE_CODE_STRING
);
2135 type
= copy_type (type
);
2138 range_type
= check_typedef (TYPE_INDEX_TYPE (elt_type
));
2139 range_type
= resolve_dynamic_range (range_type
, addr_stack
);
2141 /* Resolve allocated/associated here before creating a new array type, which
2142 will update the length of the array accordingly. */
2143 prop
= TYPE_ALLOCATED_PROP (type
);
2144 if (prop
!= NULL
&& dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2146 TYPE_DYN_PROP_ADDR (prop
) = value
;
2147 TYPE_DYN_PROP_KIND (prop
) = PROP_CONST
;
2149 prop
= TYPE_ASSOCIATED_PROP (type
);
2150 if (prop
!= NULL
&& dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2152 TYPE_DYN_PROP_ADDR (prop
) = value
;
2153 TYPE_DYN_PROP_KIND (prop
) = PROP_CONST
;
2156 ary_dim
= check_typedef (TYPE_TARGET_TYPE (elt_type
));
2158 if (ary_dim
!= NULL
&& TYPE_CODE (ary_dim
) == TYPE_CODE_ARRAY
)
2159 elt_type
= resolve_dynamic_array_or_string (ary_dim
, addr_stack
);
2161 elt_type
= TYPE_TARGET_TYPE (type
);
2163 prop
= get_dyn_prop (DYN_PROP_BYTE_STRIDE
, type
);
2166 if (dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2168 remove_dyn_prop (DYN_PROP_BYTE_STRIDE
, type
);
2169 bit_stride
= (unsigned int) (value
* 8);
2173 /* Could be a bug in our code, but it could also happen
2174 if the DWARF info is not correct. Issue a warning,
2175 and assume no byte/bit stride (leave bit_stride = 0). */
2176 warning (_("cannot determine array stride for type %s"),
2177 TYPE_NAME (type
) ? TYPE_NAME (type
) : "<no name>");
2181 bit_stride
= TYPE_FIELD_BITSIZE (type
, 0);
2183 return create_array_type_with_stride (type
, elt_type
, range_type
, NULL
,
2187 /* Resolve dynamic bounds of members of the union TYPE to static
2188 bounds. ADDR_STACK is a stack of struct property_addr_info
2189 to be used if needed during the dynamic resolution. */
2191 static struct type
*
2192 resolve_dynamic_union (struct type
*type
,
2193 struct property_addr_info
*addr_stack
)
2195 struct type
*resolved_type
;
2197 unsigned int max_len
= 0;
2199 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_UNION
);
2201 resolved_type
= copy_type (type
);
2202 TYPE_FIELDS (resolved_type
)
2203 = (struct field
*) TYPE_ALLOC (resolved_type
,
2204 TYPE_NFIELDS (resolved_type
)
2205 * sizeof (struct field
));
2206 memcpy (TYPE_FIELDS (resolved_type
),
2208 TYPE_NFIELDS (resolved_type
) * sizeof (struct field
));
2209 for (i
= 0; i
< TYPE_NFIELDS (resolved_type
); ++i
)
2213 if (field_is_static (&TYPE_FIELD (type
, i
)))
2216 t
= resolve_dynamic_type_internal (TYPE_FIELD_TYPE (resolved_type
, i
),
2218 TYPE_FIELD_TYPE (resolved_type
, i
) = t
;
2219 if (TYPE_LENGTH (t
) > max_len
)
2220 max_len
= TYPE_LENGTH (t
);
2223 TYPE_LENGTH (resolved_type
) = max_len
;
2224 return resolved_type
;
2227 /* See gdbtypes.h. */
2230 variant::matches (ULONGEST value
, bool is_unsigned
) const
2232 for (const discriminant_range
&range
: discriminants
)
2233 if (range
.contains (value
, is_unsigned
))
2239 compute_variant_fields_inner (struct type
*type
,
2240 struct property_addr_info
*addr_stack
,
2241 const variant_part
&part
,
2242 std::vector
<bool> &flags
);
2244 /* A helper function to determine which variant fields will be active.
2245 This handles both the variant's direct fields, and any variant
2246 parts embedded in this variant. TYPE is the type we're examining.
2247 ADDR_STACK holds information about the concrete object. VARIANT is
2248 the current variant to be handled. FLAGS is where the results are
2249 stored -- this function sets the Nth element in FLAGS if the
2250 corresponding field is enabled. ENABLED is whether this variant is
2254 compute_variant_fields_recurse (struct type
*type
,
2255 struct property_addr_info
*addr_stack
,
2256 const variant
&variant
,
2257 std::vector
<bool> &flags
,
2260 for (int field
= variant
.first_field
; field
< variant
.last_field
; ++field
)
2261 flags
[field
] = enabled
;
2263 for (const variant_part
&new_part
: variant
.parts
)
2266 compute_variant_fields_inner (type
, addr_stack
, new_part
, flags
);
2269 for (const auto &sub_variant
: new_part
.variants
)
2270 compute_variant_fields_recurse (type
, addr_stack
, sub_variant
,
2276 /* A helper function to determine which variant fields will be active.
2277 This evaluates the discriminant, decides which variant (if any) is
2278 active, and then updates FLAGS to reflect which fields should be
2279 available. TYPE is the type we're examining. ADDR_STACK holds
2280 information about the concrete object. VARIANT is the current
2281 variant to be handled. FLAGS is where the results are stored --
2282 this function sets the Nth element in FLAGS if the corresponding
2283 field is enabled. */
2286 compute_variant_fields_inner (struct type
*type
,
2287 struct property_addr_info
*addr_stack
,
2288 const variant_part
&part
,
2289 std::vector
<bool> &flags
)
2291 /* Evaluate the discriminant. */
2292 gdb::optional
<ULONGEST
> discr_value
;
2293 if (part
.discriminant_index
!= -1)
2295 int idx
= part
.discriminant_index
;
2297 if (TYPE_FIELD_LOC_KIND (type
, idx
) != FIELD_LOC_KIND_BITPOS
)
2298 error (_("Cannot determine struct field location"
2299 " (invalid location kind)"));
2301 if (addr_stack
->valaddr
.data () != NULL
)
2302 discr_value
= unpack_field_as_long (type
, addr_stack
->valaddr
.data (),
2306 CORE_ADDR addr
= (addr_stack
->addr
2307 + (TYPE_FIELD_BITPOS (type
, idx
)
2308 / TARGET_CHAR_BIT
));
2310 LONGEST bitsize
= TYPE_FIELD_BITSIZE (type
, idx
);
2311 LONGEST size
= bitsize
/ 8;
2313 size
= TYPE_LENGTH (TYPE_FIELD_TYPE (type
, idx
));
2315 gdb_byte bits
[sizeof (ULONGEST
)];
2316 read_memory (addr
, bits
, size
);
2318 LONGEST bitpos
= (TYPE_FIELD_BITPOS (type
, idx
)
2321 discr_value
= unpack_bits_as_long (TYPE_FIELD_TYPE (type
, idx
),
2322 bits
, bitpos
, bitsize
);
2326 /* Go through each variant and see which applies. */
2327 const variant
*default_variant
= nullptr;
2328 const variant
*applied_variant
= nullptr;
2329 for (const auto &variant
: part
.variants
)
2331 if (variant
.is_default ())
2332 default_variant
= &variant
;
2333 else if (discr_value
.has_value ()
2334 && variant
.matches (*discr_value
, part
.is_unsigned
))
2336 applied_variant
= &variant
;
2340 if (applied_variant
== nullptr)
2341 applied_variant
= default_variant
;
2343 for (const auto &variant
: part
.variants
)
2344 compute_variant_fields_recurse (type
, addr_stack
, variant
,
2345 flags
, applied_variant
== &variant
);
2348 /* Determine which variant fields are available in TYPE. The enabled
2349 fields are stored in RESOLVED_TYPE. ADDR_STACK holds information
2350 about the concrete object. PARTS describes the top-level variant
2351 parts for this type. */
2354 compute_variant_fields (struct type
*type
,
2355 struct type
*resolved_type
,
2356 struct property_addr_info
*addr_stack
,
2357 const gdb::array_view
<variant_part
> &parts
)
2359 /* Assume all fields are included by default. */
2360 std::vector
<bool> flags (TYPE_NFIELDS (resolved_type
), true);
2362 /* Now disable fields based on the variants that control them. */
2363 for (const auto &part
: parts
)
2364 compute_variant_fields_inner (type
, addr_stack
, part
, flags
);
2366 TYPE_NFIELDS (resolved_type
) = std::count (flags
.begin (), flags
.end (),
2368 TYPE_FIELDS (resolved_type
)
2369 = (struct field
*) TYPE_ALLOC (resolved_type
,
2370 TYPE_NFIELDS (resolved_type
)
2371 * sizeof (struct field
));
2373 for (int i
= 0; i
< TYPE_NFIELDS (type
); ++i
)
2378 TYPE_FIELD (resolved_type
, out
) = TYPE_FIELD (type
, i
);
2383 /* Resolve dynamic bounds of members of the struct TYPE to static
2384 bounds. ADDR_STACK is a stack of struct property_addr_info to
2385 be used if needed during the dynamic resolution. */
2387 static struct type
*
2388 resolve_dynamic_struct (struct type
*type
,
2389 struct property_addr_info
*addr_stack
)
2391 struct type
*resolved_type
;
2393 unsigned resolved_type_bit_length
= 0;
2395 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_STRUCT
);
2396 gdb_assert (TYPE_NFIELDS (type
) > 0);
2398 resolved_type
= copy_type (type
);
2400 struct dynamic_prop
*variant_prop
= get_dyn_prop (DYN_PROP_VARIANT_PARTS
,
2402 if (variant_prop
!= nullptr && variant_prop
->kind
== PROP_VARIANT_PARTS
)
2404 compute_variant_fields (type
, resolved_type
, addr_stack
,
2405 *variant_prop
->data
.variant_parts
);
2406 /* We want to leave the property attached, so that the Rust code
2407 can tell whether the type was originally an enum. */
2408 variant_prop
->kind
= PROP_TYPE
;
2409 variant_prop
->data
.original_type
= type
;
2413 TYPE_FIELDS (resolved_type
)
2414 = (struct field
*) TYPE_ALLOC (resolved_type
,
2415 TYPE_NFIELDS (resolved_type
)
2416 * sizeof (struct field
));
2417 memcpy (TYPE_FIELDS (resolved_type
),
2419 TYPE_NFIELDS (resolved_type
) * sizeof (struct field
));
2422 for (i
= 0; i
< TYPE_NFIELDS (resolved_type
); ++i
)
2424 unsigned new_bit_length
;
2425 struct property_addr_info pinfo
;
2427 if (field_is_static (&TYPE_FIELD (resolved_type
, i
)))
2430 /* As we know this field is not a static field, the field's
2431 field_loc_kind should be FIELD_LOC_KIND_BITPOS. Verify
2432 this is the case, but only trigger a simple error rather
2433 than an internal error if that fails. While failing
2434 that verification indicates a bug in our code, the error
2435 is not severe enough to suggest to the user he stops
2436 his debugging session because of it. */
2437 if (TYPE_FIELD_LOC_KIND (resolved_type
, i
) != FIELD_LOC_KIND_BITPOS
)
2438 error (_("Cannot determine struct field location"
2439 " (invalid location kind)"));
2441 pinfo
.type
= check_typedef (TYPE_FIELD_TYPE (resolved_type
, i
));
2442 pinfo
.valaddr
= addr_stack
->valaddr
;
2445 + (TYPE_FIELD_BITPOS (resolved_type
, i
) / TARGET_CHAR_BIT
));
2446 pinfo
.next
= addr_stack
;
2448 TYPE_FIELD_TYPE (resolved_type
, i
)
2449 = resolve_dynamic_type_internal (TYPE_FIELD_TYPE (resolved_type
, i
),
2451 gdb_assert (TYPE_FIELD_LOC_KIND (resolved_type
, i
)
2452 == FIELD_LOC_KIND_BITPOS
);
2454 new_bit_length
= TYPE_FIELD_BITPOS (resolved_type
, i
);
2455 if (TYPE_FIELD_BITSIZE (resolved_type
, i
) != 0)
2456 new_bit_length
+= TYPE_FIELD_BITSIZE (resolved_type
, i
);
2458 new_bit_length
+= (TYPE_LENGTH (TYPE_FIELD_TYPE (resolved_type
, i
))
2461 /* Normally, we would use the position and size of the last field
2462 to determine the size of the enclosing structure. But GCC seems
2463 to be encoding the position of some fields incorrectly when
2464 the struct contains a dynamic field that is not placed last.
2465 So we compute the struct size based on the field that has
2466 the highest position + size - probably the best we can do. */
2467 if (new_bit_length
> resolved_type_bit_length
)
2468 resolved_type_bit_length
= new_bit_length
;
2471 /* The length of a type won't change for fortran, but it does for C and Ada.
2472 For fortran the size of dynamic fields might change over time but not the
2473 type length of the structure. If we adapt it, we run into problems
2474 when calculating the element offset for arrays of structs. */
2475 if (current_language
->la_language
!= language_fortran
)
2476 TYPE_LENGTH (resolved_type
)
2477 = (resolved_type_bit_length
+ TARGET_CHAR_BIT
- 1) / TARGET_CHAR_BIT
;
2479 /* The Ada language uses this field as a cache for static fixed types: reset
2480 it as RESOLVED_TYPE must have its own static fixed type. */
2481 TYPE_TARGET_TYPE (resolved_type
) = NULL
;
2483 return resolved_type
;
2486 /* Worker for resolved_dynamic_type. */
2488 static struct type
*
2489 resolve_dynamic_type_internal (struct type
*type
,
2490 struct property_addr_info
*addr_stack
,
2493 struct type
*real_type
= check_typedef (type
);
2494 struct type
*resolved_type
= type
;
2495 struct dynamic_prop
*prop
;
2498 if (!is_dynamic_type_internal (real_type
, top_level
))
2501 if (TYPE_CODE (type
) == TYPE_CODE_TYPEDEF
)
2503 resolved_type
= copy_type (type
);
2504 TYPE_TARGET_TYPE (resolved_type
)
2505 = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (type
), addr_stack
,
2510 /* Before trying to resolve TYPE, make sure it is not a stub. */
2513 switch (TYPE_CODE (type
))
2517 struct property_addr_info pinfo
;
2519 pinfo
.type
= check_typedef (TYPE_TARGET_TYPE (type
));
2521 if (addr_stack
->valaddr
.data () != NULL
)
2522 pinfo
.addr
= extract_typed_address (addr_stack
->valaddr
.data (),
2525 pinfo
.addr
= read_memory_typed_address (addr_stack
->addr
, type
);
2526 pinfo
.next
= addr_stack
;
2528 resolved_type
= copy_type (type
);
2529 TYPE_TARGET_TYPE (resolved_type
)
2530 = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (type
),
2535 case TYPE_CODE_STRING
:
2536 /* Strings are very much like an array of characters, and can be
2537 treated as one here. */
2538 case TYPE_CODE_ARRAY
:
2539 resolved_type
= resolve_dynamic_array_or_string (type
, addr_stack
);
2542 case TYPE_CODE_RANGE
:
2543 resolved_type
= resolve_dynamic_range (type
, addr_stack
);
2546 case TYPE_CODE_UNION
:
2547 resolved_type
= resolve_dynamic_union (type
, addr_stack
);
2550 case TYPE_CODE_STRUCT
:
2551 resolved_type
= resolve_dynamic_struct (type
, addr_stack
);
2556 /* Resolve data_location attribute. */
2557 prop
= TYPE_DATA_LOCATION (resolved_type
);
2559 && dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2561 TYPE_DYN_PROP_ADDR (prop
) = value
;
2562 TYPE_DYN_PROP_KIND (prop
) = PROP_CONST
;
2565 return resolved_type
;
2568 /* See gdbtypes.h */
2571 resolve_dynamic_type (struct type
*type
,
2572 gdb::array_view
<const gdb_byte
> valaddr
,
2575 struct property_addr_info pinfo
2576 = {check_typedef (type
), valaddr
, addr
, NULL
};
2578 return resolve_dynamic_type_internal (type
, &pinfo
, 1);
2581 /* See gdbtypes.h */
2583 struct dynamic_prop
*
2584 get_dyn_prop (enum dynamic_prop_node_kind prop_kind
, const struct type
*type
)
2586 struct dynamic_prop_list
*node
= TYPE_DYN_PROP_LIST (type
);
2588 while (node
!= NULL
)
2590 if (node
->prop_kind
== prop_kind
)
2597 /* See gdbtypes.h */
2600 add_dyn_prop (enum dynamic_prop_node_kind prop_kind
, struct dynamic_prop prop
,
2603 struct dynamic_prop_list
*temp
;
2605 gdb_assert (TYPE_OBJFILE_OWNED (type
));
2607 temp
= XOBNEW (&TYPE_OBJFILE (type
)->objfile_obstack
,
2608 struct dynamic_prop_list
);
2609 temp
->prop_kind
= prop_kind
;
2611 temp
->next
= TYPE_DYN_PROP_LIST (type
);
2613 TYPE_DYN_PROP_LIST (type
) = temp
;
2616 /* Remove dynamic property from TYPE in case it exists. */
2619 remove_dyn_prop (enum dynamic_prop_node_kind prop_kind
,
2622 struct dynamic_prop_list
*prev_node
, *curr_node
;
2624 curr_node
= TYPE_DYN_PROP_LIST (type
);
2627 while (NULL
!= curr_node
)
2629 if (curr_node
->prop_kind
== prop_kind
)
2631 /* Update the linked list but don't free anything.
2632 The property was allocated on objstack and it is not known
2633 if we are on top of it. Nevertheless, everything is released
2634 when the complete objstack is freed. */
2635 if (NULL
== prev_node
)
2636 TYPE_DYN_PROP_LIST (type
) = curr_node
->next
;
2638 prev_node
->next
= curr_node
->next
;
2643 prev_node
= curr_node
;
2644 curr_node
= curr_node
->next
;
2648 /* Find the real type of TYPE. This function returns the real type,
2649 after removing all layers of typedefs, and completing opaque or stub
2650 types. Completion changes the TYPE argument, but stripping of
2653 Instance flags (e.g. const/volatile) are preserved as typedefs are
2654 stripped. If necessary a new qualified form of the underlying type
2657 NOTE: This will return a typedef if TYPE_TARGET_TYPE for the typedef has
2658 not been computed and we're either in the middle of reading symbols, or
2659 there was no name for the typedef in the debug info.
2661 NOTE: Lookup of opaque types can throw errors for invalid symbol files.
2662 QUITs in the symbol reading code can also throw.
2663 Thus this function can throw an exception.
2665 If TYPE is a TYPE_CODE_TYPEDEF, its length is updated to the length of
2668 If this is a stubbed struct (i.e. declared as struct foo *), see if
2669 we can find a full definition in some other file. If so, copy this
2670 definition, so we can use it in future. There used to be a comment
2671 (but not any code) that if we don't find a full definition, we'd
2672 set a flag so we don't spend time in the future checking the same
2673 type. That would be a mistake, though--we might load in more
2674 symbols which contain a full definition for the type. */
2677 check_typedef (struct type
*type
)
2679 struct type
*orig_type
= type
;
2680 /* While we're removing typedefs, we don't want to lose qualifiers.
2681 E.g., const/volatile. */
2682 int instance_flags
= TYPE_INSTANCE_FLAGS (type
);
2686 while (TYPE_CODE (type
) == TYPE_CODE_TYPEDEF
)
2688 if (!TYPE_TARGET_TYPE (type
))
2693 /* It is dangerous to call lookup_symbol if we are currently
2694 reading a symtab. Infinite recursion is one danger. */
2695 if (currently_reading_symtab
)
2696 return make_qualified_type (type
, instance_flags
, NULL
);
2698 name
= TYPE_NAME (type
);
2699 /* FIXME: shouldn't we look in STRUCT_DOMAIN and/or
2700 VAR_DOMAIN as appropriate? */
2703 stub_noname_complaint ();
2704 return make_qualified_type (type
, instance_flags
, NULL
);
2706 sym
= lookup_symbol (name
, 0, STRUCT_DOMAIN
, 0).symbol
;
2708 TYPE_TARGET_TYPE (type
) = SYMBOL_TYPE (sym
);
2709 else /* TYPE_CODE_UNDEF */
2710 TYPE_TARGET_TYPE (type
) = alloc_type_arch (get_type_arch (type
));
2712 type
= TYPE_TARGET_TYPE (type
);
2714 /* Preserve the instance flags as we traverse down the typedef chain.
2716 Handling address spaces/classes is nasty, what do we do if there's a
2718 E.g., what if an outer typedef marks the type as class_1 and an inner
2719 typedef marks the type as class_2?
2720 This is the wrong place to do such error checking. We leave it to
2721 the code that created the typedef in the first place to flag the
2722 error. We just pick the outer address space (akin to letting the
2723 outer cast in a chain of casting win), instead of assuming
2724 "it can't happen". */
2726 const int ALL_SPACES
= (TYPE_INSTANCE_FLAG_CODE_SPACE
2727 | TYPE_INSTANCE_FLAG_DATA_SPACE
);
2728 const int ALL_CLASSES
= TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL
;
2729 int new_instance_flags
= TYPE_INSTANCE_FLAGS (type
);
2731 /* Treat code vs data spaces and address classes separately. */
2732 if ((instance_flags
& ALL_SPACES
) != 0)
2733 new_instance_flags
&= ~ALL_SPACES
;
2734 if ((instance_flags
& ALL_CLASSES
) != 0)
2735 new_instance_flags
&= ~ALL_CLASSES
;
2737 instance_flags
|= new_instance_flags
;
2741 /* If this is a struct/class/union with no fields, then check
2742 whether a full definition exists somewhere else. This is for
2743 systems where a type definition with no fields is issued for such
2744 types, instead of identifying them as stub types in the first
2747 if (TYPE_IS_OPAQUE (type
)
2748 && opaque_type_resolution
2749 && !currently_reading_symtab
)
2751 const char *name
= TYPE_NAME (type
);
2752 struct type
*newtype
;
2756 stub_noname_complaint ();
2757 return make_qualified_type (type
, instance_flags
, NULL
);
2759 newtype
= lookup_transparent_type (name
);
2763 /* If the resolved type and the stub are in the same
2764 objfile, then replace the stub type with the real deal.
2765 But if they're in separate objfiles, leave the stub
2766 alone; we'll just look up the transparent type every time
2767 we call check_typedef. We can't create pointers between
2768 types allocated to different objfiles, since they may
2769 have different lifetimes. Trying to copy NEWTYPE over to
2770 TYPE's objfile is pointless, too, since you'll have to
2771 move over any other types NEWTYPE refers to, which could
2772 be an unbounded amount of stuff. */
2773 if (TYPE_OBJFILE (newtype
) == TYPE_OBJFILE (type
))
2774 type
= make_qualified_type (newtype
,
2775 TYPE_INSTANCE_FLAGS (type
),
2781 /* Otherwise, rely on the stub flag being set for opaque/stubbed
2783 else if (TYPE_STUB (type
) && !currently_reading_symtab
)
2785 const char *name
= TYPE_NAME (type
);
2786 /* FIXME: shouldn't we look in STRUCT_DOMAIN and/or VAR_DOMAIN
2792 stub_noname_complaint ();
2793 return make_qualified_type (type
, instance_flags
, NULL
);
2795 sym
= lookup_symbol (name
, 0, STRUCT_DOMAIN
, 0).symbol
;
2798 /* Same as above for opaque types, we can replace the stub
2799 with the complete type only if they are in the same
2801 if (TYPE_OBJFILE (SYMBOL_TYPE(sym
)) == TYPE_OBJFILE (type
))
2802 type
= make_qualified_type (SYMBOL_TYPE (sym
),
2803 TYPE_INSTANCE_FLAGS (type
),
2806 type
= SYMBOL_TYPE (sym
);
2810 if (TYPE_TARGET_STUB (type
))
2812 struct type
*target_type
= check_typedef (TYPE_TARGET_TYPE (type
));
2814 if (TYPE_STUB (target_type
) || TYPE_TARGET_STUB (target_type
))
2816 /* Nothing we can do. */
2818 else if (TYPE_CODE (type
) == TYPE_CODE_RANGE
)
2820 TYPE_LENGTH (type
) = TYPE_LENGTH (target_type
);
2821 TYPE_TARGET_STUB (type
) = 0;
2825 type
= make_qualified_type (type
, instance_flags
, NULL
);
2827 /* Cache TYPE_LENGTH for future use. */
2828 TYPE_LENGTH (orig_type
) = TYPE_LENGTH (type
);
2833 /* Parse a type expression in the string [P..P+LENGTH). If an error
2834 occurs, silently return a void type. */
2836 static struct type
*
2837 safe_parse_type (struct gdbarch
*gdbarch
, char *p
, int length
)
2839 struct ui_file
*saved_gdb_stderr
;
2840 struct type
*type
= NULL
; /* Initialize to keep gcc happy. */
2842 /* Suppress error messages. */
2843 saved_gdb_stderr
= gdb_stderr
;
2844 gdb_stderr
= &null_stream
;
2846 /* Call parse_and_eval_type() without fear of longjmp()s. */
2849 type
= parse_and_eval_type (p
, length
);
2851 catch (const gdb_exception_error
&except
)
2853 type
= builtin_type (gdbarch
)->builtin_void
;
2856 /* Stop suppressing error messages. */
2857 gdb_stderr
= saved_gdb_stderr
;
2862 /* Ugly hack to convert method stubs into method types.
2864 He ain't kiddin'. This demangles the name of the method into a
2865 string including argument types, parses out each argument type,
2866 generates a string casting a zero to that type, evaluates the
2867 string, and stuffs the resulting type into an argtype vector!!!
2868 Then it knows the type of the whole function (including argument
2869 types for overloading), which info used to be in the stab's but was
2870 removed to hack back the space required for them. */
2873 check_stub_method (struct type
*type
, int method_id
, int signature_id
)
2875 struct gdbarch
*gdbarch
= get_type_arch (type
);
2877 char *mangled_name
= gdb_mangle_name (type
, method_id
, signature_id
);
2878 char *demangled_name
= gdb_demangle (mangled_name
,
2879 DMGL_PARAMS
| DMGL_ANSI
);
2880 char *argtypetext
, *p
;
2881 int depth
= 0, argcount
= 1;
2882 struct field
*argtypes
;
2885 /* Make sure we got back a function string that we can use. */
2887 p
= strchr (demangled_name
, '(');
2891 if (demangled_name
== NULL
|| p
== NULL
)
2892 error (_("Internal: Cannot demangle mangled name `%s'."),
2895 /* Now, read in the parameters that define this type. */
2900 if (*p
== '(' || *p
== '<')
2904 else if (*p
== ')' || *p
== '>')
2908 else if (*p
== ',' && depth
== 0)
2916 /* If we read one argument and it was ``void'', don't count it. */
2917 if (startswith (argtypetext
, "(void)"))
2920 /* We need one extra slot, for the THIS pointer. */
2922 argtypes
= (struct field
*)
2923 TYPE_ALLOC (type
, (argcount
+ 1) * sizeof (struct field
));
2926 /* Add THIS pointer for non-static methods. */
2927 f
= TYPE_FN_FIELDLIST1 (type
, method_id
);
2928 if (TYPE_FN_FIELD_STATIC_P (f
, signature_id
))
2932 argtypes
[0].type
= lookup_pointer_type (type
);
2936 if (*p
!= ')') /* () means no args, skip while. */
2941 if (depth
<= 0 && (*p
== ',' || *p
== ')'))
2943 /* Avoid parsing of ellipsis, they will be handled below.
2944 Also avoid ``void'' as above. */
2945 if (strncmp (argtypetext
, "...", p
- argtypetext
) != 0
2946 && strncmp (argtypetext
, "void", p
- argtypetext
) != 0)
2948 argtypes
[argcount
].type
=
2949 safe_parse_type (gdbarch
, argtypetext
, p
- argtypetext
);
2952 argtypetext
= p
+ 1;
2955 if (*p
== '(' || *p
== '<')
2959 else if (*p
== ')' || *p
== '>')
2968 TYPE_FN_FIELD_PHYSNAME (f
, signature_id
) = mangled_name
;
2970 /* Now update the old "stub" type into a real type. */
2971 mtype
= TYPE_FN_FIELD_TYPE (f
, signature_id
);
2972 /* MTYPE may currently be a function (TYPE_CODE_FUNC).
2973 We want a method (TYPE_CODE_METHOD). */
2974 smash_to_method_type (mtype
, type
, TYPE_TARGET_TYPE (mtype
),
2975 argtypes
, argcount
, p
[-2] == '.');
2976 TYPE_STUB (mtype
) = 0;
2977 TYPE_FN_FIELD_STUB (f
, signature_id
) = 0;
2979 xfree (demangled_name
);
2982 /* This is the external interface to check_stub_method, above. This
2983 function unstubs all of the signatures for TYPE's METHOD_ID method
2984 name. After calling this function TYPE_FN_FIELD_STUB will be
2985 cleared for each signature and TYPE_FN_FIELDLIST_NAME will be
2988 This function unfortunately can not die until stabs do. */
2991 check_stub_method_group (struct type
*type
, int method_id
)
2993 int len
= TYPE_FN_FIELDLIST_LENGTH (type
, method_id
);
2994 struct fn_field
*f
= TYPE_FN_FIELDLIST1 (type
, method_id
);
2996 for (int j
= 0; j
< len
; j
++)
2998 if (TYPE_FN_FIELD_STUB (f
, j
))
2999 check_stub_method (type
, method_id
, j
);
3003 /* Ensure it is in .rodata (if available) by working around GCC PR 44690. */
3004 const struct cplus_struct_type cplus_struct_default
= { };
3007 allocate_cplus_struct_type (struct type
*type
)
3009 if (HAVE_CPLUS_STRUCT (type
))
3010 /* Structure was already allocated. Nothing more to do. */
3013 TYPE_SPECIFIC_FIELD (type
) = TYPE_SPECIFIC_CPLUS_STUFF
;
3014 TYPE_RAW_CPLUS_SPECIFIC (type
) = (struct cplus_struct_type
*)
3015 TYPE_ALLOC (type
, sizeof (struct cplus_struct_type
));
3016 *(TYPE_RAW_CPLUS_SPECIFIC (type
)) = cplus_struct_default
;
3017 set_type_vptr_fieldno (type
, -1);
3020 const struct gnat_aux_type gnat_aux_default
=
3023 /* Set the TYPE's type-specific kind to TYPE_SPECIFIC_GNAT_STUFF,
3024 and allocate the associated gnat-specific data. The gnat-specific
3025 data is also initialized to gnat_aux_default. */
3028 allocate_gnat_aux_type (struct type
*type
)
3030 TYPE_SPECIFIC_FIELD (type
) = TYPE_SPECIFIC_GNAT_STUFF
;
3031 TYPE_GNAT_SPECIFIC (type
) = (struct gnat_aux_type
*)
3032 TYPE_ALLOC (type
, sizeof (struct gnat_aux_type
));
3033 *(TYPE_GNAT_SPECIFIC (type
)) = gnat_aux_default
;
3036 /* Helper function to initialize a newly allocated type. Set type code
3037 to CODE and initialize the type-specific fields accordingly. */
3040 set_type_code (struct type
*type
, enum type_code code
)
3042 TYPE_CODE (type
) = code
;
3046 case TYPE_CODE_STRUCT
:
3047 case TYPE_CODE_UNION
:
3048 case TYPE_CODE_NAMESPACE
:
3049 INIT_CPLUS_SPECIFIC (type
);
3052 TYPE_SPECIFIC_FIELD (type
) = TYPE_SPECIFIC_FLOATFORMAT
;
3054 case TYPE_CODE_FUNC
:
3055 INIT_FUNC_SPECIFIC (type
);
3060 /* Helper function to verify floating-point format and size.
3061 BIT is the type size in bits; if BIT equals -1, the size is
3062 determined by the floatformat. Returns size to be used. */
3065 verify_floatformat (int bit
, const struct floatformat
*floatformat
)
3067 gdb_assert (floatformat
!= NULL
);
3070 bit
= floatformat
->totalsize
;
3072 gdb_assert (bit
>= 0);
3073 gdb_assert (bit
>= floatformat
->totalsize
);
3078 /* Return the floating-point format for a floating-point variable of
3081 const struct floatformat
*
3082 floatformat_from_type (const struct type
*type
)
3084 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_FLT
);
3085 gdb_assert (TYPE_FLOATFORMAT (type
));
3086 return TYPE_FLOATFORMAT (type
);
3089 /* Helper function to initialize the standard scalar types.
3091 If NAME is non-NULL, then it is used to initialize the type name.
3092 Note that NAME is not copied; it is required to have a lifetime at
3093 least as long as OBJFILE. */
3096 init_type (struct objfile
*objfile
, enum type_code code
, int bit
,
3101 type
= alloc_type (objfile
);
3102 set_type_code (type
, code
);
3103 gdb_assert ((bit
% TARGET_CHAR_BIT
) == 0);
3104 TYPE_LENGTH (type
) = bit
/ TARGET_CHAR_BIT
;
3105 TYPE_NAME (type
) = name
;
3110 /* Allocate a TYPE_CODE_ERROR type structure associated with OBJFILE,
3111 to use with variables that have no debug info. NAME is the type
3114 static struct type
*
3115 init_nodebug_var_type (struct objfile
*objfile
, const char *name
)
3117 return init_type (objfile
, TYPE_CODE_ERROR
, 0, name
);
3120 /* Allocate a TYPE_CODE_INT type structure associated with OBJFILE.
3121 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
3122 the type's TYPE_UNSIGNED flag. NAME is the type name. */
3125 init_integer_type (struct objfile
*objfile
,
3126 int bit
, int unsigned_p
, const char *name
)
3130 t
= init_type (objfile
, TYPE_CODE_INT
, bit
, name
);
3132 TYPE_UNSIGNED (t
) = 1;
3137 /* Allocate a TYPE_CODE_CHAR type structure associated with OBJFILE.
3138 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
3139 the type's TYPE_UNSIGNED flag. NAME is the type name. */
3142 init_character_type (struct objfile
*objfile
,
3143 int bit
, int unsigned_p
, const char *name
)
3147 t
= init_type (objfile
, TYPE_CODE_CHAR
, bit
, name
);
3149 TYPE_UNSIGNED (t
) = 1;
3154 /* Allocate a TYPE_CODE_BOOL type structure associated with OBJFILE.
3155 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
3156 the type's TYPE_UNSIGNED flag. NAME is the type name. */
3159 init_boolean_type (struct objfile
*objfile
,
3160 int bit
, int unsigned_p
, const char *name
)
3164 t
= init_type (objfile
, TYPE_CODE_BOOL
, bit
, name
);
3166 TYPE_UNSIGNED (t
) = 1;
3171 /* Allocate a TYPE_CODE_FLT type structure associated with OBJFILE.
3172 BIT is the type size in bits; if BIT equals -1, the size is
3173 determined by the floatformat. NAME is the type name. Set the
3174 TYPE_FLOATFORMAT from FLOATFORMATS. BYTE_ORDER is the byte order
3175 to use. If it is BFD_ENDIAN_UNKNOWN (the default), then the byte
3176 order of the objfile's architecture is used. */
3179 init_float_type (struct objfile
*objfile
,
3180 int bit
, const char *name
,
3181 const struct floatformat
**floatformats
,
3182 enum bfd_endian byte_order
)
3184 if (byte_order
== BFD_ENDIAN_UNKNOWN
)
3186 struct gdbarch
*gdbarch
= objfile
->arch ();
3187 byte_order
= gdbarch_byte_order (gdbarch
);
3189 const struct floatformat
*fmt
= floatformats
[byte_order
];
3192 bit
= verify_floatformat (bit
, fmt
);
3193 t
= init_type (objfile
, TYPE_CODE_FLT
, bit
, name
);
3194 TYPE_FLOATFORMAT (t
) = fmt
;
3199 /* Allocate a TYPE_CODE_DECFLOAT type structure associated with OBJFILE.
3200 BIT is the type size in bits. NAME is the type name. */
3203 init_decfloat_type (struct objfile
*objfile
, int bit
, const char *name
)
3207 t
= init_type (objfile
, TYPE_CODE_DECFLOAT
, bit
, name
);
3211 /* Allocate a TYPE_CODE_COMPLEX type structure. NAME is the type
3212 name. TARGET_TYPE is the component type. */
3215 init_complex_type (const char *name
, struct type
*target_type
)
3219 gdb_assert (TYPE_CODE (target_type
) == TYPE_CODE_INT
3220 || TYPE_CODE (target_type
) == TYPE_CODE_FLT
);
3222 if (TYPE_MAIN_TYPE (target_type
)->flds_bnds
.complex_type
== nullptr)
3224 if (name
== nullptr)
3227 = (char *) TYPE_ALLOC (target_type
,
3228 strlen (TYPE_NAME (target_type
))
3229 + strlen ("_Complex ") + 1);
3230 strcpy (new_name
, "_Complex ");
3231 strcat (new_name
, TYPE_NAME (target_type
));
3235 t
= alloc_type_copy (target_type
);
3236 set_type_code (t
, TYPE_CODE_COMPLEX
);
3237 TYPE_LENGTH (t
) = 2 * TYPE_LENGTH (target_type
);
3238 TYPE_NAME (t
) = name
;
3240 TYPE_TARGET_TYPE (t
) = target_type
;
3241 TYPE_MAIN_TYPE (target_type
)->flds_bnds
.complex_type
= t
;
3244 return TYPE_MAIN_TYPE (target_type
)->flds_bnds
.complex_type
;
3247 /* Allocate a TYPE_CODE_PTR type structure associated with OBJFILE.
3248 BIT is the pointer type size in bits. NAME is the type name.
3249 TARGET_TYPE is the pointer target type. Always sets the pointer type's
3250 TYPE_UNSIGNED flag. */
3253 init_pointer_type (struct objfile
*objfile
,
3254 int bit
, const char *name
, struct type
*target_type
)
3258 t
= init_type (objfile
, TYPE_CODE_PTR
, bit
, name
);
3259 TYPE_TARGET_TYPE (t
) = target_type
;
3260 TYPE_UNSIGNED (t
) = 1;
3264 /* See gdbtypes.h. */
3267 type_raw_align (struct type
*type
)
3269 if (type
->align_log2
!= 0)
3270 return 1 << (type
->align_log2
- 1);
3274 /* See gdbtypes.h. */
3277 type_align (struct type
*type
)
3279 /* Check alignment provided in the debug information. */
3280 unsigned raw_align
= type_raw_align (type
);
3284 /* Allow the architecture to provide an alignment. */
3285 struct gdbarch
*arch
= get_type_arch (type
);
3286 ULONGEST align
= gdbarch_type_align (arch
, type
);
3290 switch (TYPE_CODE (type
))
3293 case TYPE_CODE_FUNC
:
3294 case TYPE_CODE_FLAGS
:
3296 case TYPE_CODE_RANGE
:
3298 case TYPE_CODE_ENUM
:
3300 case TYPE_CODE_RVALUE_REF
:
3301 case TYPE_CODE_CHAR
:
3302 case TYPE_CODE_BOOL
:
3303 case TYPE_CODE_DECFLOAT
:
3304 case TYPE_CODE_METHODPTR
:
3305 case TYPE_CODE_MEMBERPTR
:
3306 align
= type_length_units (check_typedef (type
));
3309 case TYPE_CODE_ARRAY
:
3310 case TYPE_CODE_COMPLEX
:
3311 case TYPE_CODE_TYPEDEF
:
3312 align
= type_align (TYPE_TARGET_TYPE (type
));
3315 case TYPE_CODE_STRUCT
:
3316 case TYPE_CODE_UNION
:
3318 int number_of_non_static_fields
= 0;
3319 for (unsigned i
= 0; i
< TYPE_NFIELDS (type
); ++i
)
3321 if (!field_is_static (&TYPE_FIELD (type
, i
)))
3323 number_of_non_static_fields
++;
3324 ULONGEST f_align
= type_align (TYPE_FIELD_TYPE (type
, i
));
3327 /* Don't pretend we know something we don't. */
3331 if (f_align
> align
)
3335 /* A struct with no fields, or with only static fields has an
3337 if (number_of_non_static_fields
== 0)
3343 case TYPE_CODE_STRING
:
3344 /* Not sure what to do here, and these can't appear in C or C++
3348 case TYPE_CODE_VOID
:
3352 case TYPE_CODE_ERROR
:
3353 case TYPE_CODE_METHOD
:
3358 if ((align
& (align
- 1)) != 0)
3360 /* Not a power of 2, so pass. */
3367 /* See gdbtypes.h. */
3370 set_type_align (struct type
*type
, ULONGEST align
)
3372 /* Must be a power of 2. Zero is ok. */
3373 gdb_assert ((align
& (align
- 1)) == 0);
3375 unsigned result
= 0;
3382 if (result
>= (1 << TYPE_ALIGN_BITS
))
3385 type
->align_log2
= result
;
3390 /* Queries on types. */
3393 can_dereference (struct type
*t
)
3395 /* FIXME: Should we return true for references as well as
3397 t
= check_typedef (t
);
3400 && TYPE_CODE (t
) == TYPE_CODE_PTR
3401 && TYPE_CODE (TYPE_TARGET_TYPE (t
)) != TYPE_CODE_VOID
);
3405 is_integral_type (struct type
*t
)
3407 t
= check_typedef (t
);
3410 && ((TYPE_CODE (t
) == TYPE_CODE_INT
)
3411 || (TYPE_CODE (t
) == TYPE_CODE_ENUM
)
3412 || (TYPE_CODE (t
) == TYPE_CODE_FLAGS
)
3413 || (TYPE_CODE (t
) == TYPE_CODE_CHAR
)
3414 || (TYPE_CODE (t
) == TYPE_CODE_RANGE
)
3415 || (TYPE_CODE (t
) == TYPE_CODE_BOOL
)));
3419 is_floating_type (struct type
*t
)
3421 t
= check_typedef (t
);
3424 && ((TYPE_CODE (t
) == TYPE_CODE_FLT
)
3425 || (TYPE_CODE (t
) == TYPE_CODE_DECFLOAT
)));
3428 /* Return true if TYPE is scalar. */
3431 is_scalar_type (struct type
*type
)
3433 type
= check_typedef (type
);
3435 switch (TYPE_CODE (type
))
3437 case TYPE_CODE_ARRAY
:
3438 case TYPE_CODE_STRUCT
:
3439 case TYPE_CODE_UNION
:
3441 case TYPE_CODE_STRING
:
3448 /* Return true if T is scalar, or a composite type which in practice has
3449 the memory layout of a scalar type. E.g., an array or struct with only
3450 one scalar element inside it, or a union with only scalar elements. */
3453 is_scalar_type_recursive (struct type
*t
)
3455 t
= check_typedef (t
);
3457 if (is_scalar_type (t
))
3459 /* Are we dealing with an array or string of known dimensions? */
3460 else if ((TYPE_CODE (t
) == TYPE_CODE_ARRAY
3461 || TYPE_CODE (t
) == TYPE_CODE_STRING
) && TYPE_NFIELDS (t
) == 1
3462 && TYPE_CODE (TYPE_INDEX_TYPE (t
)) == TYPE_CODE_RANGE
)
3464 LONGEST low_bound
, high_bound
;
3465 struct type
*elt_type
= check_typedef (TYPE_TARGET_TYPE (t
));
3467 get_discrete_bounds (TYPE_INDEX_TYPE (t
), &low_bound
, &high_bound
);
3469 return high_bound
== low_bound
&& is_scalar_type_recursive (elt_type
);
3471 /* Are we dealing with a struct with one element? */
3472 else if (TYPE_CODE (t
) == TYPE_CODE_STRUCT
&& TYPE_NFIELDS (t
) == 1)
3473 return is_scalar_type_recursive (TYPE_FIELD_TYPE (t
, 0));
3474 else if (TYPE_CODE (t
) == TYPE_CODE_UNION
)
3476 int i
, n
= TYPE_NFIELDS (t
);
3478 /* If all elements of the union are scalar, then the union is scalar. */
3479 for (i
= 0; i
< n
; i
++)
3480 if (!is_scalar_type_recursive (TYPE_FIELD_TYPE (t
, i
)))
3489 /* Return true is T is a class or a union. False otherwise. */
3492 class_or_union_p (const struct type
*t
)
3494 return (TYPE_CODE (t
) == TYPE_CODE_STRUCT
3495 || TYPE_CODE (t
) == TYPE_CODE_UNION
);
3498 /* A helper function which returns true if types A and B represent the
3499 "same" class type. This is true if the types have the same main
3500 type, or the same name. */
3503 class_types_same_p (const struct type
*a
, const struct type
*b
)
3505 return (TYPE_MAIN_TYPE (a
) == TYPE_MAIN_TYPE (b
)
3506 || (TYPE_NAME (a
) && TYPE_NAME (b
)
3507 && !strcmp (TYPE_NAME (a
), TYPE_NAME (b
))));
3510 /* If BASE is an ancestor of DCLASS return the distance between them.
3511 otherwise return -1;
3515 class B: public A {};
3516 class C: public B {};
3519 distance_to_ancestor (A, A, 0) = 0
3520 distance_to_ancestor (A, B, 0) = 1
3521 distance_to_ancestor (A, C, 0) = 2
3522 distance_to_ancestor (A, D, 0) = 3
3524 If PUBLIC is 1 then only public ancestors are considered,
3525 and the function returns the distance only if BASE is a public ancestor
3529 distance_to_ancestor (A, D, 1) = -1. */
3532 distance_to_ancestor (struct type
*base
, struct type
*dclass
, int is_public
)
3537 base
= check_typedef (base
);
3538 dclass
= check_typedef (dclass
);
3540 if (class_types_same_p (base
, dclass
))
3543 for (i
= 0; i
< TYPE_N_BASECLASSES (dclass
); i
++)
3545 if (is_public
&& ! BASETYPE_VIA_PUBLIC (dclass
, i
))
3548 d
= distance_to_ancestor (base
, TYPE_BASECLASS (dclass
, i
), is_public
);
3556 /* Check whether BASE is an ancestor or base class or DCLASS
3557 Return 1 if so, and 0 if not.
3558 Note: If BASE and DCLASS are of the same type, this function
3559 will return 1. So for some class A, is_ancestor (A, A) will
3563 is_ancestor (struct type
*base
, struct type
*dclass
)
3565 return distance_to_ancestor (base
, dclass
, 0) >= 0;
3568 /* Like is_ancestor, but only returns true when BASE is a public
3569 ancestor of DCLASS. */
3572 is_public_ancestor (struct type
*base
, struct type
*dclass
)
3574 return distance_to_ancestor (base
, dclass
, 1) >= 0;
3577 /* A helper function for is_unique_ancestor. */
3580 is_unique_ancestor_worker (struct type
*base
, struct type
*dclass
,
3582 const gdb_byte
*valaddr
, int embedded_offset
,
3583 CORE_ADDR address
, struct value
*val
)
3587 base
= check_typedef (base
);
3588 dclass
= check_typedef (dclass
);
3590 for (i
= 0; i
< TYPE_N_BASECLASSES (dclass
) && count
< 2; ++i
)
3595 iter
= check_typedef (TYPE_BASECLASS (dclass
, i
));
3597 this_offset
= baseclass_offset (dclass
, i
, valaddr
, embedded_offset
,
3600 if (class_types_same_p (base
, iter
))
3602 /* If this is the first subclass, set *OFFSET and set count
3603 to 1. Otherwise, if this is at the same offset as
3604 previous instances, do nothing. Otherwise, increment
3608 *offset
= this_offset
;
3611 else if (this_offset
== *offset
)
3619 count
+= is_unique_ancestor_worker (base
, iter
, offset
,
3621 embedded_offset
+ this_offset
,
3628 /* Like is_ancestor, but only returns true if BASE is a unique base
3629 class of the type of VAL. */
3632 is_unique_ancestor (struct type
*base
, struct value
*val
)
3636 return is_unique_ancestor_worker (base
, value_type (val
), &offset
,
3637 value_contents_for_printing (val
),
3638 value_embedded_offset (val
),
3639 value_address (val
), val
) == 1;
3642 /* See gdbtypes.h. */
3645 type_byte_order (const struct type
*type
)
3647 bfd_endian byteorder
= gdbarch_byte_order (get_type_arch (type
));
3648 if (TYPE_ENDIANITY_NOT_DEFAULT (type
))
3650 if (byteorder
== BFD_ENDIAN_BIG
)
3651 return BFD_ENDIAN_LITTLE
;
3654 gdb_assert (byteorder
== BFD_ENDIAN_LITTLE
);
3655 return BFD_ENDIAN_BIG
;
3663 /* Overload resolution. */
3665 /* Return the sum of the rank of A with the rank of B. */
3668 sum_ranks (struct rank a
, struct rank b
)
3671 c
.rank
= a
.rank
+ b
.rank
;
3672 c
.subrank
= a
.subrank
+ b
.subrank
;
3676 /* Compare rank A and B and return:
3678 1 if a is better than b
3679 -1 if b is better than a. */
3682 compare_ranks (struct rank a
, struct rank b
)
3684 if (a
.rank
== b
.rank
)
3686 if (a
.subrank
== b
.subrank
)
3688 if (a
.subrank
< b
.subrank
)
3690 if (a
.subrank
> b
.subrank
)
3694 if (a
.rank
< b
.rank
)
3697 /* a.rank > b.rank */
3701 /* Functions for overload resolution begin here. */
3703 /* Compare two badness vectors A and B and return the result.
3704 0 => A and B are identical
3705 1 => A and B are incomparable
3706 2 => A is better than B
3707 3 => A is worse than B */
3710 compare_badness (const badness_vector
&a
, const badness_vector
&b
)
3714 short found_pos
= 0; /* any positives in c? */
3715 short found_neg
= 0; /* any negatives in c? */
3717 /* differing sizes => incomparable */
3718 if (a
.size () != b
.size ())
3721 /* Subtract b from a */
3722 for (i
= 0; i
< a
.size (); i
++)
3724 tmp
= compare_ranks (b
[i
], a
[i
]);
3734 return 1; /* incomparable */
3736 return 3; /* A > B */
3742 return 2; /* A < B */
3744 return 0; /* A == B */
3748 /* Rank a function by comparing its parameter types (PARMS), to the
3749 types of an argument list (ARGS). Return the badness vector. This
3750 has ARGS.size() + 1 entries. */
3753 rank_function (gdb::array_view
<type
*> parms
,
3754 gdb::array_view
<value
*> args
)
3756 /* add 1 for the length-match rank. */
3758 bv
.reserve (1 + args
.size ());
3760 /* First compare the lengths of the supplied lists.
3761 If there is a mismatch, set it to a high value. */
3763 /* pai/1997-06-03 FIXME: when we have debug info about default
3764 arguments and ellipsis parameter lists, we should consider those
3765 and rank the length-match more finely. */
3767 bv
.push_back ((args
.size () != parms
.size ())
3768 ? LENGTH_MISMATCH_BADNESS
3769 : EXACT_MATCH_BADNESS
);
3771 /* Now rank all the parameters of the candidate function. */
3772 size_t min_len
= std::min (parms
.size (), args
.size ());
3774 for (size_t i
= 0; i
< min_len
; i
++)
3775 bv
.push_back (rank_one_type (parms
[i
], value_type (args
[i
]),
3778 /* If more arguments than parameters, add dummy entries. */
3779 for (size_t i
= min_len
; i
< args
.size (); i
++)
3780 bv
.push_back (TOO_FEW_PARAMS_BADNESS
);
3785 /* Compare the names of two integer types, assuming that any sign
3786 qualifiers have been checked already. We do it this way because
3787 there may be an "int" in the name of one of the types. */
3790 integer_types_same_name_p (const char *first
, const char *second
)
3792 int first_p
, second_p
;
3794 /* If both are shorts, return 1; if neither is a short, keep
3796 first_p
= (strstr (first
, "short") != NULL
);
3797 second_p
= (strstr (second
, "short") != NULL
);
3798 if (first_p
&& second_p
)
3800 if (first_p
|| second_p
)
3803 /* Likewise for long. */
3804 first_p
= (strstr (first
, "long") != NULL
);
3805 second_p
= (strstr (second
, "long") != NULL
);
3806 if (first_p
&& second_p
)
3808 if (first_p
|| second_p
)
3811 /* Likewise for char. */
3812 first_p
= (strstr (first
, "char") != NULL
);
3813 second_p
= (strstr (second
, "char") != NULL
);
3814 if (first_p
&& second_p
)
3816 if (first_p
|| second_p
)
3819 /* They must both be ints. */
3823 /* Compares type A to type B. Returns true if they represent the same
3824 type, false otherwise. */
3827 types_equal (struct type
*a
, struct type
*b
)
3829 /* Identical type pointers. */
3830 /* However, this still doesn't catch all cases of same type for b
3831 and a. The reason is that builtin types are different from
3832 the same ones constructed from the object. */
3836 /* Resolve typedefs */
3837 if (TYPE_CODE (a
) == TYPE_CODE_TYPEDEF
)
3838 a
= check_typedef (a
);
3839 if (TYPE_CODE (b
) == TYPE_CODE_TYPEDEF
)
3840 b
= check_typedef (b
);
3842 /* If after resolving typedefs a and b are not of the same type
3843 code then they are not equal. */
3844 if (TYPE_CODE (a
) != TYPE_CODE (b
))
3847 /* If a and b are both pointers types or both reference types then
3848 they are equal of the same type iff the objects they refer to are
3849 of the same type. */
3850 if (TYPE_CODE (a
) == TYPE_CODE_PTR
3851 || TYPE_CODE (a
) == TYPE_CODE_REF
)
3852 return types_equal (TYPE_TARGET_TYPE (a
),
3853 TYPE_TARGET_TYPE (b
));
3855 /* Well, damnit, if the names are exactly the same, I'll say they
3856 are exactly the same. This happens when we generate method
3857 stubs. The types won't point to the same address, but they
3858 really are the same. */
3860 if (TYPE_NAME (a
) && TYPE_NAME (b
)
3861 && strcmp (TYPE_NAME (a
), TYPE_NAME (b
)) == 0)
3864 /* Check if identical after resolving typedefs. */
3868 /* Two function types are equal if their argument and return types
3870 if (TYPE_CODE (a
) == TYPE_CODE_FUNC
)
3874 if (TYPE_NFIELDS (a
) != TYPE_NFIELDS (b
))
3877 if (!types_equal (TYPE_TARGET_TYPE (a
), TYPE_TARGET_TYPE (b
)))
3880 for (i
= 0; i
< TYPE_NFIELDS (a
); ++i
)
3881 if (!types_equal (TYPE_FIELD_TYPE (a
, i
), TYPE_FIELD_TYPE (b
, i
)))
3890 /* Deep comparison of types. */
3892 /* An entry in the type-equality bcache. */
3894 struct type_equality_entry
3896 type_equality_entry (struct type
*t1
, struct type
*t2
)
3902 struct type
*type1
, *type2
;
3905 /* A helper function to compare two strings. Returns true if they are
3906 the same, false otherwise. Handles NULLs properly. */
3909 compare_maybe_null_strings (const char *s
, const char *t
)
3911 if (s
== NULL
|| t
== NULL
)
3913 return strcmp (s
, t
) == 0;
3916 /* A helper function for check_types_worklist that checks two types for
3917 "deep" equality. Returns true if the types are considered the
3918 same, false otherwise. */
3921 check_types_equal (struct type
*type1
, struct type
*type2
,
3922 std::vector
<type_equality_entry
> *worklist
)
3924 type1
= check_typedef (type1
);
3925 type2
= check_typedef (type2
);
3930 if (TYPE_CODE (type1
) != TYPE_CODE (type2
)
3931 || TYPE_LENGTH (type1
) != TYPE_LENGTH (type2
)
3932 || TYPE_UNSIGNED (type1
) != TYPE_UNSIGNED (type2
)
3933 || TYPE_NOSIGN (type1
) != TYPE_NOSIGN (type2
)
3934 || TYPE_ENDIANITY_NOT_DEFAULT (type1
) != TYPE_ENDIANITY_NOT_DEFAULT (type2
)
3935 || TYPE_VARARGS (type1
) != TYPE_VARARGS (type2
)
3936 || TYPE_VECTOR (type1
) != TYPE_VECTOR (type2
)
3937 || TYPE_NOTTEXT (type1
) != TYPE_NOTTEXT (type2
)
3938 || TYPE_INSTANCE_FLAGS (type1
) != TYPE_INSTANCE_FLAGS (type2
)
3939 || TYPE_NFIELDS (type1
) != TYPE_NFIELDS (type2
))
3942 if (!compare_maybe_null_strings (TYPE_NAME (type1
), TYPE_NAME (type2
)))
3944 if (!compare_maybe_null_strings (TYPE_NAME (type1
), TYPE_NAME (type2
)))
3947 if (TYPE_CODE (type1
) == TYPE_CODE_RANGE
)
3949 if (*TYPE_RANGE_DATA (type1
) != *TYPE_RANGE_DATA (type2
))
3956 for (i
= 0; i
< TYPE_NFIELDS (type1
); ++i
)
3958 const struct field
*field1
= &TYPE_FIELD (type1
, i
);
3959 const struct field
*field2
= &TYPE_FIELD (type2
, i
);
3961 if (FIELD_ARTIFICIAL (*field1
) != FIELD_ARTIFICIAL (*field2
)
3962 || FIELD_BITSIZE (*field1
) != FIELD_BITSIZE (*field2
)
3963 || FIELD_LOC_KIND (*field1
) != FIELD_LOC_KIND (*field2
))
3965 if (!compare_maybe_null_strings (FIELD_NAME (*field1
),
3966 FIELD_NAME (*field2
)))
3968 switch (FIELD_LOC_KIND (*field1
))
3970 case FIELD_LOC_KIND_BITPOS
:
3971 if (FIELD_BITPOS (*field1
) != FIELD_BITPOS (*field2
))
3974 case FIELD_LOC_KIND_ENUMVAL
:
3975 if (FIELD_ENUMVAL (*field1
) != FIELD_ENUMVAL (*field2
))
3978 case FIELD_LOC_KIND_PHYSADDR
:
3979 if (FIELD_STATIC_PHYSADDR (*field1
)
3980 != FIELD_STATIC_PHYSADDR (*field2
))
3983 case FIELD_LOC_KIND_PHYSNAME
:
3984 if (!compare_maybe_null_strings (FIELD_STATIC_PHYSNAME (*field1
),
3985 FIELD_STATIC_PHYSNAME (*field2
)))
3988 case FIELD_LOC_KIND_DWARF_BLOCK
:
3990 struct dwarf2_locexpr_baton
*block1
, *block2
;
3992 block1
= FIELD_DWARF_BLOCK (*field1
);
3993 block2
= FIELD_DWARF_BLOCK (*field2
);
3994 if (block1
->per_cu
!= block2
->per_cu
3995 || block1
->size
!= block2
->size
3996 || memcmp (block1
->data
, block2
->data
, block1
->size
) != 0)
4001 internal_error (__FILE__
, __LINE__
, _("Unsupported field kind "
4002 "%d by check_types_equal"),
4003 FIELD_LOC_KIND (*field1
));
4006 worklist
->emplace_back (FIELD_TYPE (*field1
), FIELD_TYPE (*field2
));
4010 if (TYPE_TARGET_TYPE (type1
) != NULL
)
4012 if (TYPE_TARGET_TYPE (type2
) == NULL
)
4015 worklist
->emplace_back (TYPE_TARGET_TYPE (type1
),
4016 TYPE_TARGET_TYPE (type2
));
4018 else if (TYPE_TARGET_TYPE (type2
) != NULL
)
4024 /* Check types on a worklist for equality. Returns false if any pair
4025 is not equal, true if they are all considered equal. */
4028 check_types_worklist (std::vector
<type_equality_entry
> *worklist
,
4031 while (!worklist
->empty ())
4035 struct type_equality_entry entry
= std::move (worklist
->back ());
4036 worklist
->pop_back ();
4038 /* If the type pair has already been visited, we know it is
4040 cache
->insert (&entry
, sizeof (entry
), &added
);
4044 if (!check_types_equal (entry
.type1
, entry
.type2
, worklist
))
4051 /* Return true if types TYPE1 and TYPE2 are equal, as determined by a
4052 "deep comparison". Otherwise return false. */
4055 types_deeply_equal (struct type
*type1
, struct type
*type2
)
4057 std::vector
<type_equality_entry
> worklist
;
4059 gdb_assert (type1
!= NULL
&& type2
!= NULL
);
4061 /* Early exit for the simple case. */
4065 gdb::bcache
cache (nullptr, nullptr);
4066 worklist
.emplace_back (type1
, type2
);
4067 return check_types_worklist (&worklist
, &cache
);
4070 /* Allocated status of type TYPE. Return zero if type TYPE is allocated.
4071 Otherwise return one. */
4074 type_not_allocated (const struct type
*type
)
4076 struct dynamic_prop
*prop
= TYPE_ALLOCATED_PROP (type
);
4078 return (prop
&& TYPE_DYN_PROP_KIND (prop
) == PROP_CONST
4079 && !TYPE_DYN_PROP_ADDR (prop
));
4082 /* Associated status of type TYPE. Return zero if type TYPE is associated.
4083 Otherwise return one. */
4086 type_not_associated (const struct type
*type
)
4088 struct dynamic_prop
*prop
= TYPE_ASSOCIATED_PROP (type
);
4090 return (prop
&& TYPE_DYN_PROP_KIND (prop
) == PROP_CONST
4091 && !TYPE_DYN_PROP_ADDR (prop
));
4094 /* rank_one_type helper for when PARM's type code is TYPE_CODE_PTR. */
4097 rank_one_type_parm_ptr (struct type
*parm
, struct type
*arg
, struct value
*value
)
4099 struct rank rank
= {0,0};
4101 switch (TYPE_CODE (arg
))
4105 /* Allowed pointer conversions are:
4106 (a) pointer to void-pointer conversion. */
4107 if (TYPE_CODE (TYPE_TARGET_TYPE (parm
)) == TYPE_CODE_VOID
)
4108 return VOID_PTR_CONVERSION_BADNESS
;
4110 /* (b) pointer to ancestor-pointer conversion. */
4111 rank
.subrank
= distance_to_ancestor (TYPE_TARGET_TYPE (parm
),
4112 TYPE_TARGET_TYPE (arg
),
4114 if (rank
.subrank
>= 0)
4115 return sum_ranks (BASE_PTR_CONVERSION_BADNESS
, rank
);
4117 return INCOMPATIBLE_TYPE_BADNESS
;
4118 case TYPE_CODE_ARRAY
:
4120 struct type
*t1
= TYPE_TARGET_TYPE (parm
);
4121 struct type
*t2
= TYPE_TARGET_TYPE (arg
);
4123 if (types_equal (t1
, t2
))
4125 /* Make sure they are CV equal. */
4126 if (TYPE_CONST (t1
) != TYPE_CONST (t2
))
4127 rank
.subrank
|= CV_CONVERSION_CONST
;
4128 if (TYPE_VOLATILE (t1
) != TYPE_VOLATILE (t2
))
4129 rank
.subrank
|= CV_CONVERSION_VOLATILE
;
4130 if (rank
.subrank
!= 0)
4131 return sum_ranks (CV_CONVERSION_BADNESS
, rank
);
4132 return EXACT_MATCH_BADNESS
;
4134 return INCOMPATIBLE_TYPE_BADNESS
;
4136 case TYPE_CODE_FUNC
:
4137 return rank_one_type (TYPE_TARGET_TYPE (parm
), arg
, NULL
);
4139 if (value
!= NULL
&& TYPE_CODE (value_type (value
)) == TYPE_CODE_INT
)
4141 if (value_as_long (value
) == 0)
4143 /* Null pointer conversion: allow it to be cast to a pointer.
4144 [4.10.1 of C++ standard draft n3290] */
4145 return NULL_POINTER_CONVERSION_BADNESS
;
4149 /* If type checking is disabled, allow the conversion. */
4150 if (!strict_type_checking
)
4151 return NS_INTEGER_POINTER_CONVERSION_BADNESS
;
4155 case TYPE_CODE_ENUM
:
4156 case TYPE_CODE_FLAGS
:
4157 case TYPE_CODE_CHAR
:
4158 case TYPE_CODE_RANGE
:
4159 case TYPE_CODE_BOOL
:
4161 return INCOMPATIBLE_TYPE_BADNESS
;
4165 /* rank_one_type helper for when PARM's type code is TYPE_CODE_ARRAY. */
4168 rank_one_type_parm_array (struct type
*parm
, struct type
*arg
, struct value
*value
)
4170 switch (TYPE_CODE (arg
))
4173 case TYPE_CODE_ARRAY
:
4174 return rank_one_type (TYPE_TARGET_TYPE (parm
),
4175 TYPE_TARGET_TYPE (arg
), NULL
);
4177 return INCOMPATIBLE_TYPE_BADNESS
;
4181 /* rank_one_type helper for when PARM's type code is TYPE_CODE_FUNC. */
4184 rank_one_type_parm_func (struct type
*parm
, struct type
*arg
, struct value
*value
)
4186 switch (TYPE_CODE (arg
))
4188 case TYPE_CODE_PTR
: /* funcptr -> func */
4189 return rank_one_type (parm
, TYPE_TARGET_TYPE (arg
), NULL
);
4191 return INCOMPATIBLE_TYPE_BADNESS
;
4195 /* rank_one_type helper for when PARM's type code is TYPE_CODE_INT. */
4198 rank_one_type_parm_int (struct type
*parm
, struct type
*arg
, struct value
*value
)
4200 switch (TYPE_CODE (arg
))
4203 if (TYPE_LENGTH (arg
) == TYPE_LENGTH (parm
))
4205 /* Deal with signed, unsigned, and plain chars and
4206 signed and unsigned ints. */
4207 if (TYPE_NOSIGN (parm
))
4209 /* This case only for character types. */
4210 if (TYPE_NOSIGN (arg
))
4211 return EXACT_MATCH_BADNESS
; /* plain char -> plain char */
4212 else /* signed/unsigned char -> plain char */
4213 return INTEGER_CONVERSION_BADNESS
;
4215 else if (TYPE_UNSIGNED (parm
))
4217 if (TYPE_UNSIGNED (arg
))
4219 /* unsigned int -> unsigned int, or
4220 unsigned long -> unsigned long */
4221 if (integer_types_same_name_p (TYPE_NAME (parm
),
4223 return EXACT_MATCH_BADNESS
;
4224 else if (integer_types_same_name_p (TYPE_NAME (arg
),
4226 && integer_types_same_name_p (TYPE_NAME (parm
),
4228 /* unsigned int -> unsigned long */
4229 return INTEGER_PROMOTION_BADNESS
;
4231 /* unsigned long -> unsigned int */
4232 return INTEGER_CONVERSION_BADNESS
;
4236 if (integer_types_same_name_p (TYPE_NAME (arg
),
4238 && integer_types_same_name_p (TYPE_NAME (parm
),
4240 /* signed long -> unsigned int */
4241 return INTEGER_CONVERSION_BADNESS
;
4243 /* signed int/long -> unsigned int/long */
4244 return INTEGER_CONVERSION_BADNESS
;
4247 else if (!TYPE_NOSIGN (arg
) && !TYPE_UNSIGNED (arg
))
4249 if (integer_types_same_name_p (TYPE_NAME (parm
),
4251 return EXACT_MATCH_BADNESS
;
4252 else if (integer_types_same_name_p (TYPE_NAME (arg
),
4254 && integer_types_same_name_p (TYPE_NAME (parm
),
4256 return INTEGER_PROMOTION_BADNESS
;
4258 return INTEGER_CONVERSION_BADNESS
;
4261 return INTEGER_CONVERSION_BADNESS
;
4263 else if (TYPE_LENGTH (arg
) < TYPE_LENGTH (parm
))
4264 return INTEGER_PROMOTION_BADNESS
;
4266 return INTEGER_CONVERSION_BADNESS
;
4267 case TYPE_CODE_ENUM
:
4268 case TYPE_CODE_FLAGS
:
4269 case TYPE_CODE_CHAR
:
4270 case TYPE_CODE_RANGE
:
4271 case TYPE_CODE_BOOL
:
4272 if (TYPE_DECLARED_CLASS (arg
))
4273 return INCOMPATIBLE_TYPE_BADNESS
;
4274 return INTEGER_PROMOTION_BADNESS
;
4276 return INT_FLOAT_CONVERSION_BADNESS
;
4278 return NS_POINTER_CONVERSION_BADNESS
;
4280 return INCOMPATIBLE_TYPE_BADNESS
;
4284 /* rank_one_type helper for when PARM's type code is TYPE_CODE_ENUM. */
4287 rank_one_type_parm_enum (struct type
*parm
, struct type
*arg
, struct value
*value
)
4289 switch (TYPE_CODE (arg
))
4292 case TYPE_CODE_CHAR
:
4293 case TYPE_CODE_RANGE
:
4294 case TYPE_CODE_BOOL
:
4295 case TYPE_CODE_ENUM
:
4296 if (TYPE_DECLARED_CLASS (parm
) || TYPE_DECLARED_CLASS (arg
))
4297 return INCOMPATIBLE_TYPE_BADNESS
;
4298 return INTEGER_CONVERSION_BADNESS
;
4300 return INT_FLOAT_CONVERSION_BADNESS
;
4302 return INCOMPATIBLE_TYPE_BADNESS
;
4306 /* rank_one_type helper for when PARM's type code is TYPE_CODE_CHAR. */
4309 rank_one_type_parm_char (struct type
*parm
, struct type
*arg
, struct value
*value
)
4311 switch (TYPE_CODE (arg
))
4313 case TYPE_CODE_RANGE
:
4314 case TYPE_CODE_BOOL
:
4315 case TYPE_CODE_ENUM
:
4316 if (TYPE_DECLARED_CLASS (arg
))
4317 return INCOMPATIBLE_TYPE_BADNESS
;
4318 return INTEGER_CONVERSION_BADNESS
;
4320 return INT_FLOAT_CONVERSION_BADNESS
;
4322 if (TYPE_LENGTH (arg
) > TYPE_LENGTH (parm
))
4323 return INTEGER_CONVERSION_BADNESS
;
4324 else if (TYPE_LENGTH (arg
) < TYPE_LENGTH (parm
))
4325 return INTEGER_PROMOTION_BADNESS
;
4327 case TYPE_CODE_CHAR
:
4328 /* Deal with signed, unsigned, and plain chars for C++ and
4329 with int cases falling through from previous case. */
4330 if (TYPE_NOSIGN (parm
))
4332 if (TYPE_NOSIGN (arg
))
4333 return EXACT_MATCH_BADNESS
;
4335 return INTEGER_CONVERSION_BADNESS
;
4337 else if (TYPE_UNSIGNED (parm
))
4339 if (TYPE_UNSIGNED (arg
))
4340 return EXACT_MATCH_BADNESS
;
4342 return INTEGER_PROMOTION_BADNESS
;
4344 else if (!TYPE_NOSIGN (arg
) && !TYPE_UNSIGNED (arg
))
4345 return EXACT_MATCH_BADNESS
;
4347 return INTEGER_CONVERSION_BADNESS
;
4349 return INCOMPATIBLE_TYPE_BADNESS
;
4353 /* rank_one_type helper for when PARM's type code is TYPE_CODE_RANGE. */
4356 rank_one_type_parm_range (struct type
*parm
, struct type
*arg
, struct value
*value
)
4358 switch (TYPE_CODE (arg
))
4361 case TYPE_CODE_CHAR
:
4362 case TYPE_CODE_RANGE
:
4363 case TYPE_CODE_BOOL
:
4364 case TYPE_CODE_ENUM
:
4365 return INTEGER_CONVERSION_BADNESS
;
4367 return INT_FLOAT_CONVERSION_BADNESS
;
4369 return INCOMPATIBLE_TYPE_BADNESS
;
4373 /* rank_one_type helper for when PARM's type code is TYPE_CODE_BOOL. */
4376 rank_one_type_parm_bool (struct type
*parm
, struct type
*arg
, struct value
*value
)
4378 switch (TYPE_CODE (arg
))
4380 /* n3290 draft, section 4.12.1 (conv.bool):
4382 "A prvalue of arithmetic, unscoped enumeration, pointer, or
4383 pointer to member type can be converted to a prvalue of type
4384 bool. A zero value, null pointer value, or null member pointer
4385 value is converted to false; any other value is converted to
4386 true. A prvalue of type std::nullptr_t can be converted to a
4387 prvalue of type bool; the resulting value is false." */
4389 case TYPE_CODE_CHAR
:
4390 case TYPE_CODE_ENUM
:
4392 case TYPE_CODE_MEMBERPTR
:
4394 return BOOL_CONVERSION_BADNESS
;
4395 case TYPE_CODE_RANGE
:
4396 return INCOMPATIBLE_TYPE_BADNESS
;
4397 case TYPE_CODE_BOOL
:
4398 return EXACT_MATCH_BADNESS
;
4400 return INCOMPATIBLE_TYPE_BADNESS
;
4404 /* rank_one_type helper for when PARM's type code is TYPE_CODE_FLOAT. */
4407 rank_one_type_parm_float (struct type
*parm
, struct type
*arg
, struct value
*value
)
4409 switch (TYPE_CODE (arg
))
4412 if (TYPE_LENGTH (arg
) < TYPE_LENGTH (parm
))
4413 return FLOAT_PROMOTION_BADNESS
;
4414 else if (TYPE_LENGTH (arg
) == TYPE_LENGTH (parm
))
4415 return EXACT_MATCH_BADNESS
;
4417 return FLOAT_CONVERSION_BADNESS
;
4419 case TYPE_CODE_BOOL
:
4420 case TYPE_CODE_ENUM
:
4421 case TYPE_CODE_RANGE
:
4422 case TYPE_CODE_CHAR
:
4423 return INT_FLOAT_CONVERSION_BADNESS
;
4425 return INCOMPATIBLE_TYPE_BADNESS
;
4429 /* rank_one_type helper for when PARM's type code is TYPE_CODE_COMPLEX. */
4432 rank_one_type_parm_complex (struct type
*parm
, struct type
*arg
, struct value
*value
)
4434 switch (TYPE_CODE (arg
))
4435 { /* Strictly not needed for C++, but... */
4437 return FLOAT_PROMOTION_BADNESS
;
4438 case TYPE_CODE_COMPLEX
:
4439 return EXACT_MATCH_BADNESS
;
4441 return INCOMPATIBLE_TYPE_BADNESS
;
4445 /* rank_one_type helper for when PARM's type code is TYPE_CODE_STRUCT. */
4448 rank_one_type_parm_struct (struct type
*parm
, struct type
*arg
, struct value
*value
)
4450 struct rank rank
= {0, 0};
4452 switch (TYPE_CODE (arg
))
4454 case TYPE_CODE_STRUCT
:
4455 /* Check for derivation */
4456 rank
.subrank
= distance_to_ancestor (parm
, arg
, 0);
4457 if (rank
.subrank
>= 0)
4458 return sum_ranks (BASE_CONVERSION_BADNESS
, rank
);
4461 return INCOMPATIBLE_TYPE_BADNESS
;
4465 /* rank_one_type helper for when PARM's type code is TYPE_CODE_SET. */
4468 rank_one_type_parm_set (struct type
*parm
, struct type
*arg
, struct value
*value
)
4470 switch (TYPE_CODE (arg
))
4474 return rank_one_type (TYPE_FIELD_TYPE (parm
, 0),
4475 TYPE_FIELD_TYPE (arg
, 0), NULL
);
4477 return INCOMPATIBLE_TYPE_BADNESS
;
4481 /* Compare one type (PARM) for compatibility with another (ARG).
4482 * PARM is intended to be the parameter type of a function; and
4483 * ARG is the supplied argument's type. This function tests if
4484 * the latter can be converted to the former.
4485 * VALUE is the argument's value or NULL if none (or called recursively)
4487 * Return 0 if they are identical types;
4488 * Otherwise, return an integer which corresponds to how compatible
4489 * PARM is to ARG. The higher the return value, the worse the match.
4490 * Generally the "bad" conversions are all uniformly assigned a 100. */
4493 rank_one_type (struct type
*parm
, struct type
*arg
, struct value
*value
)
4495 struct rank rank
= {0,0};
4497 /* Resolve typedefs */
4498 if (TYPE_CODE (parm
) == TYPE_CODE_TYPEDEF
)
4499 parm
= check_typedef (parm
);
4500 if (TYPE_CODE (arg
) == TYPE_CODE_TYPEDEF
)
4501 arg
= check_typedef (arg
);
4503 if (TYPE_IS_REFERENCE (parm
) && value
!= NULL
)
4505 if (VALUE_LVAL (value
) == not_lval
)
4507 /* Rvalues should preferably bind to rvalue references or const
4508 lvalue references. */
4509 if (TYPE_CODE (parm
) == TYPE_CODE_RVALUE_REF
)
4510 rank
.subrank
= REFERENCE_CONVERSION_RVALUE
;
4511 else if (TYPE_CONST (TYPE_TARGET_TYPE (parm
)))
4512 rank
.subrank
= REFERENCE_CONVERSION_CONST_LVALUE
;
4514 return INCOMPATIBLE_TYPE_BADNESS
;
4515 return sum_ranks (rank
, REFERENCE_CONVERSION_BADNESS
);
4519 /* It's illegal to pass an lvalue as an rvalue. */
4520 if (TYPE_CODE (parm
) == TYPE_CODE_RVALUE_REF
)
4521 return INCOMPATIBLE_TYPE_BADNESS
;
4525 if (types_equal (parm
, arg
))
4527 struct type
*t1
= parm
;
4528 struct type
*t2
= arg
;
4530 /* For pointers and references, compare target type. */
4531 if (TYPE_CODE (parm
) == TYPE_CODE_PTR
|| TYPE_IS_REFERENCE (parm
))
4533 t1
= TYPE_TARGET_TYPE (parm
);
4534 t2
= TYPE_TARGET_TYPE (arg
);
4537 /* Make sure they are CV equal, too. */
4538 if (TYPE_CONST (t1
) != TYPE_CONST (t2
))
4539 rank
.subrank
|= CV_CONVERSION_CONST
;
4540 if (TYPE_VOLATILE (t1
) != TYPE_VOLATILE (t2
))
4541 rank
.subrank
|= CV_CONVERSION_VOLATILE
;
4542 if (rank
.subrank
!= 0)
4543 return sum_ranks (CV_CONVERSION_BADNESS
, rank
);
4544 return EXACT_MATCH_BADNESS
;
4547 /* See through references, since we can almost make non-references
4550 if (TYPE_IS_REFERENCE (arg
))
4551 return (sum_ranks (rank_one_type (parm
, TYPE_TARGET_TYPE (arg
), NULL
),
4552 REFERENCE_SEE_THROUGH_BADNESS
));
4553 if (TYPE_IS_REFERENCE (parm
))
4554 return (sum_ranks (rank_one_type (TYPE_TARGET_TYPE (parm
), arg
, NULL
),
4555 REFERENCE_SEE_THROUGH_BADNESS
));
4557 /* Debugging only. */
4558 fprintf_filtered (gdb_stderr
,
4559 "------ Arg is %s [%d], parm is %s [%d]\n",
4560 TYPE_NAME (arg
), TYPE_CODE (arg
),
4561 TYPE_NAME (parm
), TYPE_CODE (parm
));
4563 /* x -> y means arg of type x being supplied for parameter of type y. */
4565 switch (TYPE_CODE (parm
))
4568 return rank_one_type_parm_ptr (parm
, arg
, value
);
4569 case TYPE_CODE_ARRAY
:
4570 return rank_one_type_parm_array (parm
, arg
, value
);
4571 case TYPE_CODE_FUNC
:
4572 return rank_one_type_parm_func (parm
, arg
, value
);
4574 return rank_one_type_parm_int (parm
, arg
, value
);
4575 case TYPE_CODE_ENUM
:
4576 return rank_one_type_parm_enum (parm
, arg
, value
);
4577 case TYPE_CODE_CHAR
:
4578 return rank_one_type_parm_char (parm
, arg
, value
);
4579 case TYPE_CODE_RANGE
:
4580 return rank_one_type_parm_range (parm
, arg
, value
);
4581 case TYPE_CODE_BOOL
:
4582 return rank_one_type_parm_bool (parm
, arg
, value
);
4584 return rank_one_type_parm_float (parm
, arg
, value
);
4585 case TYPE_CODE_COMPLEX
:
4586 return rank_one_type_parm_complex (parm
, arg
, value
);
4587 case TYPE_CODE_STRUCT
:
4588 return rank_one_type_parm_struct (parm
, arg
, value
);
4590 return rank_one_type_parm_set (parm
, arg
, value
);
4592 return INCOMPATIBLE_TYPE_BADNESS
;
4593 } /* switch (TYPE_CODE (arg)) */
4596 /* End of functions for overload resolution. */
4598 /* Routines to pretty-print types. */
4601 print_bit_vector (B_TYPE
*bits
, int nbits
)
4605 for (bitno
= 0; bitno
< nbits
; bitno
++)
4607 if ((bitno
% 8) == 0)
4609 puts_filtered (" ");
4611 if (B_TST (bits
, bitno
))
4612 printf_filtered (("1"));
4614 printf_filtered (("0"));
4618 /* Note the first arg should be the "this" pointer, we may not want to
4619 include it since we may get into a infinitely recursive
4623 print_args (struct field
*args
, int nargs
, int spaces
)
4629 for (i
= 0; i
< nargs
; i
++)
4631 printfi_filtered (spaces
, "[%d] name '%s'\n", i
,
4632 args
[i
].name
!= NULL
? args
[i
].name
: "<NULL>");
4633 recursive_dump_type (args
[i
].type
, spaces
+ 2);
4639 field_is_static (struct field
*f
)
4641 /* "static" fields are the fields whose location is not relative
4642 to the address of the enclosing struct. It would be nice to
4643 have a dedicated flag that would be set for static fields when
4644 the type is being created. But in practice, checking the field
4645 loc_kind should give us an accurate answer. */
4646 return (FIELD_LOC_KIND (*f
) == FIELD_LOC_KIND_PHYSNAME
4647 || FIELD_LOC_KIND (*f
) == FIELD_LOC_KIND_PHYSADDR
);
4651 dump_fn_fieldlists (struct type
*type
, int spaces
)
4657 printfi_filtered (spaces
, "fn_fieldlists ");
4658 gdb_print_host_address (TYPE_FN_FIELDLISTS (type
), gdb_stdout
);
4659 printf_filtered ("\n");
4660 for (method_idx
= 0; method_idx
< TYPE_NFN_FIELDS (type
); method_idx
++)
4662 f
= TYPE_FN_FIELDLIST1 (type
, method_idx
);
4663 printfi_filtered (spaces
+ 2, "[%d] name '%s' (",
4665 TYPE_FN_FIELDLIST_NAME (type
, method_idx
));
4666 gdb_print_host_address (TYPE_FN_FIELDLIST_NAME (type
, method_idx
),
4668 printf_filtered (_(") length %d\n"),
4669 TYPE_FN_FIELDLIST_LENGTH (type
, method_idx
));
4670 for (overload_idx
= 0;
4671 overload_idx
< TYPE_FN_FIELDLIST_LENGTH (type
, method_idx
);
4674 printfi_filtered (spaces
+ 4, "[%d] physname '%s' (",
4676 TYPE_FN_FIELD_PHYSNAME (f
, overload_idx
));
4677 gdb_print_host_address (TYPE_FN_FIELD_PHYSNAME (f
, overload_idx
),
4679 printf_filtered (")\n");
4680 printfi_filtered (spaces
+ 8, "type ");
4681 gdb_print_host_address (TYPE_FN_FIELD_TYPE (f
, overload_idx
),
4683 printf_filtered ("\n");
4685 recursive_dump_type (TYPE_FN_FIELD_TYPE (f
, overload_idx
),
4688 printfi_filtered (spaces
+ 8, "args ");
4689 gdb_print_host_address (TYPE_FN_FIELD_ARGS (f
, overload_idx
),
4691 printf_filtered ("\n");
4692 print_args (TYPE_FN_FIELD_ARGS (f
, overload_idx
),
4693 TYPE_NFIELDS (TYPE_FN_FIELD_TYPE (f
, overload_idx
)),
4695 printfi_filtered (spaces
+ 8, "fcontext ");
4696 gdb_print_host_address (TYPE_FN_FIELD_FCONTEXT (f
, overload_idx
),
4698 printf_filtered ("\n");
4700 printfi_filtered (spaces
+ 8, "is_const %d\n",
4701 TYPE_FN_FIELD_CONST (f
, overload_idx
));
4702 printfi_filtered (spaces
+ 8, "is_volatile %d\n",
4703 TYPE_FN_FIELD_VOLATILE (f
, overload_idx
));
4704 printfi_filtered (spaces
+ 8, "is_private %d\n",
4705 TYPE_FN_FIELD_PRIVATE (f
, overload_idx
));
4706 printfi_filtered (spaces
+ 8, "is_protected %d\n",
4707 TYPE_FN_FIELD_PROTECTED (f
, overload_idx
));
4708 printfi_filtered (spaces
+ 8, "is_stub %d\n",
4709 TYPE_FN_FIELD_STUB (f
, overload_idx
));
4710 printfi_filtered (spaces
+ 8, "defaulted %d\n",
4711 TYPE_FN_FIELD_DEFAULTED (f
, overload_idx
));
4712 printfi_filtered (spaces
+ 8, "is_deleted %d\n",
4713 TYPE_FN_FIELD_DELETED (f
, overload_idx
));
4714 printfi_filtered (spaces
+ 8, "voffset %u\n",
4715 TYPE_FN_FIELD_VOFFSET (f
, overload_idx
));
4721 print_cplus_stuff (struct type
*type
, int spaces
)
4723 printfi_filtered (spaces
, "vptr_fieldno %d\n", TYPE_VPTR_FIELDNO (type
));
4724 printfi_filtered (spaces
, "vptr_basetype ");
4725 gdb_print_host_address (TYPE_VPTR_BASETYPE (type
), gdb_stdout
);
4726 puts_filtered ("\n");
4727 if (TYPE_VPTR_BASETYPE (type
) != NULL
)
4728 recursive_dump_type (TYPE_VPTR_BASETYPE (type
), spaces
+ 2);
4730 printfi_filtered (spaces
, "n_baseclasses %d\n",
4731 TYPE_N_BASECLASSES (type
));
4732 printfi_filtered (spaces
, "nfn_fields %d\n",
4733 TYPE_NFN_FIELDS (type
));
4734 if (TYPE_N_BASECLASSES (type
) > 0)
4736 printfi_filtered (spaces
, "virtual_field_bits (%d bits at *",
4737 TYPE_N_BASECLASSES (type
));
4738 gdb_print_host_address (TYPE_FIELD_VIRTUAL_BITS (type
),
4740 printf_filtered (")");
4742 print_bit_vector (TYPE_FIELD_VIRTUAL_BITS (type
),
4743 TYPE_N_BASECLASSES (type
));
4744 puts_filtered ("\n");
4746 if (TYPE_NFIELDS (type
) > 0)
4748 if (TYPE_FIELD_PRIVATE_BITS (type
) != NULL
)
4750 printfi_filtered (spaces
,
4751 "private_field_bits (%d bits at *",
4752 TYPE_NFIELDS (type
));
4753 gdb_print_host_address (TYPE_FIELD_PRIVATE_BITS (type
),
4755 printf_filtered (")");
4756 print_bit_vector (TYPE_FIELD_PRIVATE_BITS (type
),
4757 TYPE_NFIELDS (type
));
4758 puts_filtered ("\n");
4760 if (TYPE_FIELD_PROTECTED_BITS (type
) != NULL
)
4762 printfi_filtered (spaces
,
4763 "protected_field_bits (%d bits at *",
4764 TYPE_NFIELDS (type
));
4765 gdb_print_host_address (TYPE_FIELD_PROTECTED_BITS (type
),
4767 printf_filtered (")");
4768 print_bit_vector (TYPE_FIELD_PROTECTED_BITS (type
),
4769 TYPE_NFIELDS (type
));
4770 puts_filtered ("\n");
4773 if (TYPE_NFN_FIELDS (type
) > 0)
4775 dump_fn_fieldlists (type
, spaces
);
4778 printfi_filtered (spaces
, "calling_convention %d\n",
4779 TYPE_CPLUS_CALLING_CONVENTION (type
));
4782 /* Print the contents of the TYPE's type_specific union, assuming that
4783 its type-specific kind is TYPE_SPECIFIC_GNAT_STUFF. */
4786 print_gnat_stuff (struct type
*type
, int spaces
)
4788 struct type
*descriptive_type
= TYPE_DESCRIPTIVE_TYPE (type
);
4790 if (descriptive_type
== NULL
)
4791 printfi_filtered (spaces
+ 2, "no descriptive type\n");
4794 printfi_filtered (spaces
+ 2, "descriptive type\n");
4795 recursive_dump_type (descriptive_type
, spaces
+ 4);
4799 static struct obstack dont_print_type_obstack
;
4802 recursive_dump_type (struct type
*type
, int spaces
)
4807 obstack_begin (&dont_print_type_obstack
, 0);
4809 if (TYPE_NFIELDS (type
) > 0
4810 || (HAVE_CPLUS_STRUCT (type
) && TYPE_NFN_FIELDS (type
) > 0))
4812 struct type
**first_dont_print
4813 = (struct type
**) obstack_base (&dont_print_type_obstack
);
4815 int i
= (struct type
**)
4816 obstack_next_free (&dont_print_type_obstack
) - first_dont_print
;
4820 if (type
== first_dont_print
[i
])
4822 printfi_filtered (spaces
, "type node ");
4823 gdb_print_host_address (type
, gdb_stdout
);
4824 printf_filtered (_(" <same as already seen type>\n"));
4829 obstack_ptr_grow (&dont_print_type_obstack
, type
);
4832 printfi_filtered (spaces
, "type node ");
4833 gdb_print_host_address (type
, gdb_stdout
);
4834 printf_filtered ("\n");
4835 printfi_filtered (spaces
, "name '%s' (",
4836 TYPE_NAME (type
) ? TYPE_NAME (type
) : "<NULL>");
4837 gdb_print_host_address (TYPE_NAME (type
), gdb_stdout
);
4838 printf_filtered (")\n");
4839 printfi_filtered (spaces
, "code 0x%x ", TYPE_CODE (type
));
4840 switch (TYPE_CODE (type
))
4842 case TYPE_CODE_UNDEF
:
4843 printf_filtered ("(TYPE_CODE_UNDEF)");
4846 printf_filtered ("(TYPE_CODE_PTR)");
4848 case TYPE_CODE_ARRAY
:
4849 printf_filtered ("(TYPE_CODE_ARRAY)");
4851 case TYPE_CODE_STRUCT
:
4852 printf_filtered ("(TYPE_CODE_STRUCT)");
4854 case TYPE_CODE_UNION
:
4855 printf_filtered ("(TYPE_CODE_UNION)");
4857 case TYPE_CODE_ENUM
:
4858 printf_filtered ("(TYPE_CODE_ENUM)");
4860 case TYPE_CODE_FLAGS
:
4861 printf_filtered ("(TYPE_CODE_FLAGS)");
4863 case TYPE_CODE_FUNC
:
4864 printf_filtered ("(TYPE_CODE_FUNC)");
4867 printf_filtered ("(TYPE_CODE_INT)");
4870 printf_filtered ("(TYPE_CODE_FLT)");
4872 case TYPE_CODE_VOID
:
4873 printf_filtered ("(TYPE_CODE_VOID)");
4876 printf_filtered ("(TYPE_CODE_SET)");
4878 case TYPE_CODE_RANGE
:
4879 printf_filtered ("(TYPE_CODE_RANGE)");
4881 case TYPE_CODE_STRING
:
4882 printf_filtered ("(TYPE_CODE_STRING)");
4884 case TYPE_CODE_ERROR
:
4885 printf_filtered ("(TYPE_CODE_ERROR)");
4887 case TYPE_CODE_MEMBERPTR
:
4888 printf_filtered ("(TYPE_CODE_MEMBERPTR)");
4890 case TYPE_CODE_METHODPTR
:
4891 printf_filtered ("(TYPE_CODE_METHODPTR)");
4893 case TYPE_CODE_METHOD
:
4894 printf_filtered ("(TYPE_CODE_METHOD)");
4897 printf_filtered ("(TYPE_CODE_REF)");
4899 case TYPE_CODE_CHAR
:
4900 printf_filtered ("(TYPE_CODE_CHAR)");
4902 case TYPE_CODE_BOOL
:
4903 printf_filtered ("(TYPE_CODE_BOOL)");
4905 case TYPE_CODE_COMPLEX
:
4906 printf_filtered ("(TYPE_CODE_COMPLEX)");
4908 case TYPE_CODE_TYPEDEF
:
4909 printf_filtered ("(TYPE_CODE_TYPEDEF)");
4911 case TYPE_CODE_NAMESPACE
:
4912 printf_filtered ("(TYPE_CODE_NAMESPACE)");
4915 printf_filtered ("(UNKNOWN TYPE CODE)");
4918 puts_filtered ("\n");
4919 printfi_filtered (spaces
, "length %s\n", pulongest (TYPE_LENGTH (type
)));
4920 if (TYPE_OBJFILE_OWNED (type
))
4922 printfi_filtered (spaces
, "objfile ");
4923 gdb_print_host_address (TYPE_OWNER (type
).objfile
, gdb_stdout
);
4927 printfi_filtered (spaces
, "gdbarch ");
4928 gdb_print_host_address (TYPE_OWNER (type
).gdbarch
, gdb_stdout
);
4930 printf_filtered ("\n");
4931 printfi_filtered (spaces
, "target_type ");
4932 gdb_print_host_address (TYPE_TARGET_TYPE (type
), gdb_stdout
);
4933 printf_filtered ("\n");
4934 if (TYPE_TARGET_TYPE (type
) != NULL
)
4936 recursive_dump_type (TYPE_TARGET_TYPE (type
), spaces
+ 2);
4938 printfi_filtered (spaces
, "pointer_type ");
4939 gdb_print_host_address (TYPE_POINTER_TYPE (type
), gdb_stdout
);
4940 printf_filtered ("\n");
4941 printfi_filtered (spaces
, "reference_type ");
4942 gdb_print_host_address (TYPE_REFERENCE_TYPE (type
), gdb_stdout
);
4943 printf_filtered ("\n");
4944 printfi_filtered (spaces
, "type_chain ");
4945 gdb_print_host_address (TYPE_CHAIN (type
), gdb_stdout
);
4946 printf_filtered ("\n");
4947 printfi_filtered (spaces
, "instance_flags 0x%x",
4948 TYPE_INSTANCE_FLAGS (type
));
4949 if (TYPE_CONST (type
))
4951 puts_filtered (" TYPE_CONST");
4953 if (TYPE_VOLATILE (type
))
4955 puts_filtered (" TYPE_VOLATILE");
4957 if (TYPE_CODE_SPACE (type
))
4959 puts_filtered (" TYPE_CODE_SPACE");
4961 if (TYPE_DATA_SPACE (type
))
4963 puts_filtered (" TYPE_DATA_SPACE");
4965 if (TYPE_ADDRESS_CLASS_1 (type
))
4967 puts_filtered (" TYPE_ADDRESS_CLASS_1");
4969 if (TYPE_ADDRESS_CLASS_2 (type
))
4971 puts_filtered (" TYPE_ADDRESS_CLASS_2");
4973 if (TYPE_RESTRICT (type
))
4975 puts_filtered (" TYPE_RESTRICT");
4977 if (TYPE_ATOMIC (type
))
4979 puts_filtered (" TYPE_ATOMIC");
4981 puts_filtered ("\n");
4983 printfi_filtered (spaces
, "flags");
4984 if (TYPE_UNSIGNED (type
))
4986 puts_filtered (" TYPE_UNSIGNED");
4988 if (TYPE_NOSIGN (type
))
4990 puts_filtered (" TYPE_NOSIGN");
4992 if (TYPE_ENDIANITY_NOT_DEFAULT (type
))
4994 puts_filtered (" TYPE_ENDIANITY_NOT_DEFAULT");
4996 if (TYPE_STUB (type
))
4998 puts_filtered (" TYPE_STUB");
5000 if (TYPE_TARGET_STUB (type
))
5002 puts_filtered (" TYPE_TARGET_STUB");
5004 if (TYPE_PROTOTYPED (type
))
5006 puts_filtered (" TYPE_PROTOTYPED");
5008 if (TYPE_INCOMPLETE (type
))
5010 puts_filtered (" TYPE_INCOMPLETE");
5012 if (TYPE_VARARGS (type
))
5014 puts_filtered (" TYPE_VARARGS");
5016 /* This is used for things like AltiVec registers on ppc. Gcc emits
5017 an attribute for the array type, which tells whether or not we
5018 have a vector, instead of a regular array. */
5019 if (TYPE_VECTOR (type
))
5021 puts_filtered (" TYPE_VECTOR");
5023 if (TYPE_FIXED_INSTANCE (type
))
5025 puts_filtered (" TYPE_FIXED_INSTANCE");
5027 if (TYPE_STUB_SUPPORTED (type
))
5029 puts_filtered (" TYPE_STUB_SUPPORTED");
5031 if (TYPE_NOTTEXT (type
))
5033 puts_filtered (" TYPE_NOTTEXT");
5035 puts_filtered ("\n");
5036 printfi_filtered (spaces
, "nfields %d ", TYPE_NFIELDS (type
));
5037 gdb_print_host_address (TYPE_FIELDS (type
), gdb_stdout
);
5038 puts_filtered ("\n");
5039 for (idx
= 0; idx
< TYPE_NFIELDS (type
); idx
++)
5041 if (TYPE_CODE (type
) == TYPE_CODE_ENUM
)
5042 printfi_filtered (spaces
+ 2,
5043 "[%d] enumval %s type ",
5044 idx
, plongest (TYPE_FIELD_ENUMVAL (type
, idx
)));
5046 printfi_filtered (spaces
+ 2,
5047 "[%d] bitpos %s bitsize %d type ",
5048 idx
, plongest (TYPE_FIELD_BITPOS (type
, idx
)),
5049 TYPE_FIELD_BITSIZE (type
, idx
));
5050 gdb_print_host_address (TYPE_FIELD_TYPE (type
, idx
), gdb_stdout
);
5051 printf_filtered (" name '%s' (",
5052 TYPE_FIELD_NAME (type
, idx
) != NULL
5053 ? TYPE_FIELD_NAME (type
, idx
)
5055 gdb_print_host_address (TYPE_FIELD_NAME (type
, idx
), gdb_stdout
);
5056 printf_filtered (")\n");
5057 if (TYPE_FIELD_TYPE (type
, idx
) != NULL
)
5059 recursive_dump_type (TYPE_FIELD_TYPE (type
, idx
), spaces
+ 4);
5062 if (TYPE_CODE (type
) == TYPE_CODE_RANGE
)
5064 printfi_filtered (spaces
, "low %s%s high %s%s\n",
5065 plongest (TYPE_LOW_BOUND (type
)),
5066 TYPE_LOW_BOUND_UNDEFINED (type
) ? " (undefined)" : "",
5067 plongest (TYPE_HIGH_BOUND (type
)),
5068 TYPE_HIGH_BOUND_UNDEFINED (type
)
5069 ? " (undefined)" : "");
5072 switch (TYPE_SPECIFIC_FIELD (type
))
5074 case TYPE_SPECIFIC_CPLUS_STUFF
:
5075 printfi_filtered (spaces
, "cplus_stuff ");
5076 gdb_print_host_address (TYPE_CPLUS_SPECIFIC (type
),
5078 puts_filtered ("\n");
5079 print_cplus_stuff (type
, spaces
);
5082 case TYPE_SPECIFIC_GNAT_STUFF
:
5083 printfi_filtered (spaces
, "gnat_stuff ");
5084 gdb_print_host_address (TYPE_GNAT_SPECIFIC (type
), gdb_stdout
);
5085 puts_filtered ("\n");
5086 print_gnat_stuff (type
, spaces
);
5089 case TYPE_SPECIFIC_FLOATFORMAT
:
5090 printfi_filtered (spaces
, "floatformat ");
5091 if (TYPE_FLOATFORMAT (type
) == NULL
5092 || TYPE_FLOATFORMAT (type
)->name
== NULL
)
5093 puts_filtered ("(null)");
5095 puts_filtered (TYPE_FLOATFORMAT (type
)->name
);
5096 puts_filtered ("\n");
5099 case TYPE_SPECIFIC_FUNC
:
5100 printfi_filtered (spaces
, "calling_convention %d\n",
5101 TYPE_CALLING_CONVENTION (type
));
5102 /* tail_call_list is not printed. */
5105 case TYPE_SPECIFIC_SELF_TYPE
:
5106 printfi_filtered (spaces
, "self_type ");
5107 gdb_print_host_address (TYPE_SELF_TYPE (type
), gdb_stdout
);
5108 puts_filtered ("\n");
5113 obstack_free (&dont_print_type_obstack
, NULL
);
5116 /* Trivial helpers for the libiberty hash table, for mapping one
5119 struct type_pair
: public allocate_on_obstack
5121 type_pair (struct type
*old_
, struct type
*newobj_
)
5122 : old (old_
), newobj (newobj_
)
5125 struct type
* const old
, * const newobj
;
5129 type_pair_hash (const void *item
)
5131 const struct type_pair
*pair
= (const struct type_pair
*) item
;
5133 return htab_hash_pointer (pair
->old
);
5137 type_pair_eq (const void *item_lhs
, const void *item_rhs
)
5139 const struct type_pair
*lhs
= (const struct type_pair
*) item_lhs
;
5140 const struct type_pair
*rhs
= (const struct type_pair
*) item_rhs
;
5142 return lhs
->old
== rhs
->old
;
5145 /* Allocate the hash table used by copy_type_recursive to walk
5146 types without duplicates. We use OBJFILE's obstack, because
5147 OBJFILE is about to be deleted. */
5150 create_copied_types_hash (struct objfile
*objfile
)
5152 return htab_create_alloc_ex (1, type_pair_hash
, type_pair_eq
,
5153 NULL
, &objfile
->objfile_obstack
,
5154 hashtab_obstack_allocate
,
5155 dummy_obstack_deallocate
);
5158 /* Recursively copy (deep copy) a dynamic attribute list of a type. */
5160 static struct dynamic_prop_list
*
5161 copy_dynamic_prop_list (struct obstack
*objfile_obstack
,
5162 struct dynamic_prop_list
*list
)
5164 struct dynamic_prop_list
*copy
= list
;
5165 struct dynamic_prop_list
**node_ptr
= ©
;
5167 while (*node_ptr
!= NULL
)
5169 struct dynamic_prop_list
*node_copy
;
5171 node_copy
= ((struct dynamic_prop_list
*)
5172 obstack_copy (objfile_obstack
, *node_ptr
,
5173 sizeof (struct dynamic_prop_list
)));
5174 node_copy
->prop
= (*node_ptr
)->prop
;
5175 *node_ptr
= node_copy
;
5177 node_ptr
= &node_copy
->next
;
5183 /* Recursively copy (deep copy) TYPE, if it is associated with
5184 OBJFILE. Return a new type owned by the gdbarch associated with the type, a
5185 saved type if we have already visited TYPE (using COPIED_TYPES), or TYPE if
5186 it is not associated with OBJFILE. */
5189 copy_type_recursive (struct objfile
*objfile
,
5191 htab_t copied_types
)
5194 struct type
*new_type
;
5196 if (! TYPE_OBJFILE_OWNED (type
))
5199 /* This type shouldn't be pointing to any types in other objfiles;
5200 if it did, the type might disappear unexpectedly. */
5201 gdb_assert (TYPE_OBJFILE (type
) == objfile
);
5203 struct type_pair
pair (type
, nullptr);
5205 slot
= htab_find_slot (copied_types
, &pair
, INSERT
);
5207 return ((struct type_pair
*) *slot
)->newobj
;
5209 new_type
= alloc_type_arch (get_type_arch (type
));
5211 /* We must add the new type to the hash table immediately, in case
5212 we encounter this type again during a recursive call below. */
5213 struct type_pair
*stored
5214 = new (&objfile
->objfile_obstack
) struct type_pair (type
, new_type
);
5218 /* Copy the common fields of types. For the main type, we simply
5219 copy the entire thing and then update specific fields as needed. */
5220 *TYPE_MAIN_TYPE (new_type
) = *TYPE_MAIN_TYPE (type
);
5221 TYPE_OBJFILE_OWNED (new_type
) = 0;
5222 TYPE_OWNER (new_type
).gdbarch
= get_type_arch (type
);
5224 if (TYPE_NAME (type
))
5225 TYPE_NAME (new_type
) = xstrdup (TYPE_NAME (type
));
5227 TYPE_INSTANCE_FLAGS (new_type
) = TYPE_INSTANCE_FLAGS (type
);
5228 TYPE_LENGTH (new_type
) = TYPE_LENGTH (type
);
5230 /* Copy the fields. */
5231 if (TYPE_NFIELDS (type
))
5235 nfields
= TYPE_NFIELDS (type
);
5236 TYPE_FIELDS (new_type
) = (struct field
*)
5237 TYPE_ZALLOC (new_type
, nfields
* sizeof (struct field
));
5238 for (i
= 0; i
< nfields
; i
++)
5240 TYPE_FIELD_ARTIFICIAL (new_type
, i
) =
5241 TYPE_FIELD_ARTIFICIAL (type
, i
);
5242 TYPE_FIELD_BITSIZE (new_type
, i
) = TYPE_FIELD_BITSIZE (type
, i
);
5243 if (TYPE_FIELD_TYPE (type
, i
))
5244 TYPE_FIELD_TYPE (new_type
, i
)
5245 = copy_type_recursive (objfile
, TYPE_FIELD_TYPE (type
, i
),
5247 if (TYPE_FIELD_NAME (type
, i
))
5248 TYPE_FIELD_NAME (new_type
, i
) =
5249 xstrdup (TYPE_FIELD_NAME (type
, i
));
5250 switch (TYPE_FIELD_LOC_KIND (type
, i
))
5252 case FIELD_LOC_KIND_BITPOS
:
5253 SET_FIELD_BITPOS (TYPE_FIELD (new_type
, i
),
5254 TYPE_FIELD_BITPOS (type
, i
));
5256 case FIELD_LOC_KIND_ENUMVAL
:
5257 SET_FIELD_ENUMVAL (TYPE_FIELD (new_type
, i
),
5258 TYPE_FIELD_ENUMVAL (type
, i
));
5260 case FIELD_LOC_KIND_PHYSADDR
:
5261 SET_FIELD_PHYSADDR (TYPE_FIELD (new_type
, i
),
5262 TYPE_FIELD_STATIC_PHYSADDR (type
, i
));
5264 case FIELD_LOC_KIND_PHYSNAME
:
5265 SET_FIELD_PHYSNAME (TYPE_FIELD (new_type
, i
),
5266 xstrdup (TYPE_FIELD_STATIC_PHYSNAME (type
,
5270 internal_error (__FILE__
, __LINE__
,
5271 _("Unexpected type field location kind: %d"),
5272 TYPE_FIELD_LOC_KIND (type
, i
));
5277 /* For range types, copy the bounds information. */
5278 if (TYPE_CODE (type
) == TYPE_CODE_RANGE
)
5280 TYPE_RANGE_DATA (new_type
) = (struct range_bounds
*)
5281 TYPE_ALLOC (new_type
, sizeof (struct range_bounds
));
5282 *TYPE_RANGE_DATA (new_type
) = *TYPE_RANGE_DATA (type
);
5285 if (TYPE_DYN_PROP_LIST (type
) != NULL
)
5286 TYPE_DYN_PROP_LIST (new_type
)
5287 = copy_dynamic_prop_list (&objfile
->objfile_obstack
,
5288 TYPE_DYN_PROP_LIST (type
));
5291 /* Copy pointers to other types. */
5292 if (TYPE_TARGET_TYPE (type
))
5293 TYPE_TARGET_TYPE (new_type
) =
5294 copy_type_recursive (objfile
,
5295 TYPE_TARGET_TYPE (type
),
5298 /* Maybe copy the type_specific bits.
5300 NOTE drow/2005-12-09: We do not copy the C++-specific bits like
5301 base classes and methods. There's no fundamental reason why we
5302 can't, but at the moment it is not needed. */
5304 switch (TYPE_SPECIFIC_FIELD (type
))
5306 case TYPE_SPECIFIC_NONE
:
5308 case TYPE_SPECIFIC_FUNC
:
5309 INIT_FUNC_SPECIFIC (new_type
);
5310 TYPE_CALLING_CONVENTION (new_type
) = TYPE_CALLING_CONVENTION (type
);
5311 TYPE_NO_RETURN (new_type
) = TYPE_NO_RETURN (type
);
5312 TYPE_TAIL_CALL_LIST (new_type
) = NULL
;
5314 case TYPE_SPECIFIC_FLOATFORMAT
:
5315 TYPE_FLOATFORMAT (new_type
) = TYPE_FLOATFORMAT (type
);
5317 case TYPE_SPECIFIC_CPLUS_STUFF
:
5318 INIT_CPLUS_SPECIFIC (new_type
);
5320 case TYPE_SPECIFIC_GNAT_STUFF
:
5321 INIT_GNAT_SPECIFIC (new_type
);
5323 case TYPE_SPECIFIC_SELF_TYPE
:
5324 set_type_self_type (new_type
,
5325 copy_type_recursive (objfile
, TYPE_SELF_TYPE (type
),
5329 gdb_assert_not_reached ("bad type_specific_kind");
5335 /* Make a copy of the given TYPE, except that the pointer & reference
5336 types are not preserved.
5338 This function assumes that the given type has an associated objfile.
5339 This objfile is used to allocate the new type. */
5342 copy_type (const struct type
*type
)
5344 struct type
*new_type
;
5346 gdb_assert (TYPE_OBJFILE_OWNED (type
));
5348 new_type
= alloc_type_copy (type
);
5349 TYPE_INSTANCE_FLAGS (new_type
) = TYPE_INSTANCE_FLAGS (type
);
5350 TYPE_LENGTH (new_type
) = TYPE_LENGTH (type
);
5351 memcpy (TYPE_MAIN_TYPE (new_type
), TYPE_MAIN_TYPE (type
),
5352 sizeof (struct main_type
));
5353 if (TYPE_DYN_PROP_LIST (type
) != NULL
)
5354 TYPE_DYN_PROP_LIST (new_type
)
5355 = copy_dynamic_prop_list (&TYPE_OBJFILE (type
) -> objfile_obstack
,
5356 TYPE_DYN_PROP_LIST (type
));
5361 /* Helper functions to initialize architecture-specific types. */
5363 /* Allocate a type structure associated with GDBARCH and set its
5364 CODE, LENGTH, and NAME fields. */
5367 arch_type (struct gdbarch
*gdbarch
,
5368 enum type_code code
, int bit
, const char *name
)
5372 type
= alloc_type_arch (gdbarch
);
5373 set_type_code (type
, code
);
5374 gdb_assert ((bit
% TARGET_CHAR_BIT
) == 0);
5375 TYPE_LENGTH (type
) = bit
/ TARGET_CHAR_BIT
;
5378 TYPE_NAME (type
) = gdbarch_obstack_strdup (gdbarch
, name
);
5383 /* Allocate a TYPE_CODE_INT type structure associated with GDBARCH.
5384 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
5385 the type's TYPE_UNSIGNED flag. NAME is the type name. */
5388 arch_integer_type (struct gdbarch
*gdbarch
,
5389 int bit
, int unsigned_p
, const char *name
)
5393 t
= arch_type (gdbarch
, TYPE_CODE_INT
, bit
, name
);
5395 TYPE_UNSIGNED (t
) = 1;
5400 /* Allocate a TYPE_CODE_CHAR type structure associated with GDBARCH.
5401 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
5402 the type's TYPE_UNSIGNED flag. NAME is the type name. */
5405 arch_character_type (struct gdbarch
*gdbarch
,
5406 int bit
, int unsigned_p
, const char *name
)
5410 t
= arch_type (gdbarch
, TYPE_CODE_CHAR
, bit
, name
);
5412 TYPE_UNSIGNED (t
) = 1;
5417 /* Allocate a TYPE_CODE_BOOL type structure associated with GDBARCH.
5418 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
5419 the type's TYPE_UNSIGNED flag. NAME is the type name. */
5422 arch_boolean_type (struct gdbarch
*gdbarch
,
5423 int bit
, int unsigned_p
, const char *name
)
5427 t
= arch_type (gdbarch
, TYPE_CODE_BOOL
, bit
, name
);
5429 TYPE_UNSIGNED (t
) = 1;
5434 /* Allocate a TYPE_CODE_FLT type structure associated with GDBARCH.
5435 BIT is the type size in bits; if BIT equals -1, the size is
5436 determined by the floatformat. NAME is the type name. Set the
5437 TYPE_FLOATFORMAT from FLOATFORMATS. */
5440 arch_float_type (struct gdbarch
*gdbarch
,
5441 int bit
, const char *name
,
5442 const struct floatformat
**floatformats
)
5444 const struct floatformat
*fmt
= floatformats
[gdbarch_byte_order (gdbarch
)];
5447 bit
= verify_floatformat (bit
, fmt
);
5448 t
= arch_type (gdbarch
, TYPE_CODE_FLT
, bit
, name
);
5449 TYPE_FLOATFORMAT (t
) = fmt
;
5454 /* Allocate a TYPE_CODE_DECFLOAT type structure associated with GDBARCH.
5455 BIT is the type size in bits. NAME is the type name. */
5458 arch_decfloat_type (struct gdbarch
*gdbarch
, int bit
, const char *name
)
5462 t
= arch_type (gdbarch
, TYPE_CODE_DECFLOAT
, bit
, name
);
5466 /* Allocate a TYPE_CODE_PTR type structure associated with GDBARCH.
5467 BIT is the pointer type size in bits. NAME is the type name.
5468 TARGET_TYPE is the pointer target type. Always sets the pointer type's
5469 TYPE_UNSIGNED flag. */
5472 arch_pointer_type (struct gdbarch
*gdbarch
,
5473 int bit
, const char *name
, struct type
*target_type
)
5477 t
= arch_type (gdbarch
, TYPE_CODE_PTR
, bit
, name
);
5478 TYPE_TARGET_TYPE (t
) = target_type
;
5479 TYPE_UNSIGNED (t
) = 1;
5483 /* Allocate a TYPE_CODE_FLAGS type structure associated with GDBARCH.
5484 NAME is the type name. BIT is the size of the flag word in bits. */
5487 arch_flags_type (struct gdbarch
*gdbarch
, const char *name
, int bit
)
5491 type
= arch_type (gdbarch
, TYPE_CODE_FLAGS
, bit
, name
);
5492 TYPE_UNSIGNED (type
) = 1;
5493 TYPE_NFIELDS (type
) = 0;
5494 /* Pre-allocate enough space assuming every field is one bit. */
5496 = (struct field
*) TYPE_ZALLOC (type
, bit
* sizeof (struct field
));
5501 /* Add field to TYPE_CODE_FLAGS type TYPE to indicate the bit at
5502 position BITPOS is called NAME. Pass NAME as "" for fields that
5503 should not be printed. */
5506 append_flags_type_field (struct type
*type
, int start_bitpos
, int nr_bits
,
5507 struct type
*field_type
, const char *name
)
5509 int type_bitsize
= TYPE_LENGTH (type
) * TARGET_CHAR_BIT
;
5510 int field_nr
= TYPE_NFIELDS (type
);
5512 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_FLAGS
);
5513 gdb_assert (TYPE_NFIELDS (type
) + 1 <= type_bitsize
);
5514 gdb_assert (start_bitpos
>= 0 && start_bitpos
< type_bitsize
);
5515 gdb_assert (nr_bits
>= 1 && nr_bits
<= type_bitsize
);
5516 gdb_assert (name
!= NULL
);
5518 TYPE_FIELD_NAME (type
, field_nr
) = xstrdup (name
);
5519 TYPE_FIELD_TYPE (type
, field_nr
) = field_type
;
5520 SET_FIELD_BITPOS (TYPE_FIELD (type
, field_nr
), start_bitpos
);
5521 TYPE_FIELD_BITSIZE (type
, field_nr
) = nr_bits
;
5522 ++TYPE_NFIELDS (type
);
5525 /* Special version of append_flags_type_field to add a flag field.
5526 Add field to TYPE_CODE_FLAGS type TYPE to indicate the bit at
5527 position BITPOS is called NAME. */
5530 append_flags_type_flag (struct type
*type
, int bitpos
, const char *name
)
5532 struct gdbarch
*gdbarch
= get_type_arch (type
);
5534 append_flags_type_field (type
, bitpos
, 1,
5535 builtin_type (gdbarch
)->builtin_bool
,
5539 /* Allocate a TYPE_CODE_STRUCT or TYPE_CODE_UNION type structure (as
5540 specified by CODE) associated with GDBARCH. NAME is the type name. */
5543 arch_composite_type (struct gdbarch
*gdbarch
, const char *name
,
5544 enum type_code code
)
5548 gdb_assert (code
== TYPE_CODE_STRUCT
|| code
== TYPE_CODE_UNION
);
5549 t
= arch_type (gdbarch
, code
, 0, NULL
);
5550 TYPE_NAME (t
) = name
;
5551 INIT_CPLUS_SPECIFIC (t
);
5555 /* Add new field with name NAME and type FIELD to composite type T.
5556 Do not set the field's position or adjust the type's length;
5557 the caller should do so. Return the new field. */
5560 append_composite_type_field_raw (struct type
*t
, const char *name
,
5565 TYPE_NFIELDS (t
) = TYPE_NFIELDS (t
) + 1;
5566 TYPE_FIELDS (t
) = XRESIZEVEC (struct field
, TYPE_FIELDS (t
),
5568 f
= &(TYPE_FIELDS (t
)[TYPE_NFIELDS (t
) - 1]);
5569 memset (f
, 0, sizeof f
[0]);
5570 FIELD_TYPE (f
[0]) = field
;
5571 FIELD_NAME (f
[0]) = name
;
5575 /* Add new field with name NAME and type FIELD to composite type T.
5576 ALIGNMENT (if non-zero) specifies the minimum field alignment. */
5579 append_composite_type_field_aligned (struct type
*t
, const char *name
,
5580 struct type
*field
, int alignment
)
5582 struct field
*f
= append_composite_type_field_raw (t
, name
, field
);
5584 if (TYPE_CODE (t
) == TYPE_CODE_UNION
)
5586 if (TYPE_LENGTH (t
) < TYPE_LENGTH (field
))
5587 TYPE_LENGTH (t
) = TYPE_LENGTH (field
);
5589 else if (TYPE_CODE (t
) == TYPE_CODE_STRUCT
)
5591 TYPE_LENGTH (t
) = TYPE_LENGTH (t
) + TYPE_LENGTH (field
);
5592 if (TYPE_NFIELDS (t
) > 1)
5594 SET_FIELD_BITPOS (f
[0],
5595 (FIELD_BITPOS (f
[-1])
5596 + (TYPE_LENGTH (FIELD_TYPE (f
[-1]))
5597 * TARGET_CHAR_BIT
)));
5603 alignment
*= TARGET_CHAR_BIT
;
5604 left
= FIELD_BITPOS (f
[0]) % alignment
;
5608 SET_FIELD_BITPOS (f
[0], FIELD_BITPOS (f
[0]) + (alignment
- left
));
5609 TYPE_LENGTH (t
) += (alignment
- left
) / TARGET_CHAR_BIT
;
5616 /* Add new field with name NAME and type FIELD to composite type T. */
5619 append_composite_type_field (struct type
*t
, const char *name
,
5622 append_composite_type_field_aligned (t
, name
, field
, 0);
5625 static struct gdbarch_data
*gdbtypes_data
;
5627 const struct builtin_type
*
5628 builtin_type (struct gdbarch
*gdbarch
)
5630 return (const struct builtin_type
*) gdbarch_data (gdbarch
, gdbtypes_data
);
5634 gdbtypes_post_init (struct gdbarch
*gdbarch
)
5636 struct builtin_type
*builtin_type
5637 = GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct builtin_type
);
5640 builtin_type
->builtin_void
5641 = arch_type (gdbarch
, TYPE_CODE_VOID
, TARGET_CHAR_BIT
, "void");
5642 builtin_type
->builtin_char
5643 = arch_integer_type (gdbarch
, TARGET_CHAR_BIT
,
5644 !gdbarch_char_signed (gdbarch
), "char");
5645 TYPE_NOSIGN (builtin_type
->builtin_char
) = 1;
5646 builtin_type
->builtin_signed_char
5647 = arch_integer_type (gdbarch
, TARGET_CHAR_BIT
,
5649 builtin_type
->builtin_unsigned_char
5650 = arch_integer_type (gdbarch
, TARGET_CHAR_BIT
,
5651 1, "unsigned char");
5652 builtin_type
->builtin_short
5653 = arch_integer_type (gdbarch
, gdbarch_short_bit (gdbarch
),
5655 builtin_type
->builtin_unsigned_short
5656 = arch_integer_type (gdbarch
, gdbarch_short_bit (gdbarch
),
5657 1, "unsigned short");
5658 builtin_type
->builtin_int
5659 = arch_integer_type (gdbarch
, gdbarch_int_bit (gdbarch
),
5661 builtin_type
->builtin_unsigned_int
5662 = arch_integer_type (gdbarch
, gdbarch_int_bit (gdbarch
),
5664 builtin_type
->builtin_long
5665 = arch_integer_type (gdbarch
, gdbarch_long_bit (gdbarch
),
5667 builtin_type
->builtin_unsigned_long
5668 = arch_integer_type (gdbarch
, gdbarch_long_bit (gdbarch
),
5669 1, "unsigned long");
5670 builtin_type
->builtin_long_long
5671 = arch_integer_type (gdbarch
, gdbarch_long_long_bit (gdbarch
),
5673 builtin_type
->builtin_unsigned_long_long
5674 = arch_integer_type (gdbarch
, gdbarch_long_long_bit (gdbarch
),
5675 1, "unsigned long long");
5676 builtin_type
->builtin_half
5677 = arch_float_type (gdbarch
, gdbarch_half_bit (gdbarch
),
5678 "half", gdbarch_half_format (gdbarch
));
5679 builtin_type
->builtin_float
5680 = arch_float_type (gdbarch
, gdbarch_float_bit (gdbarch
),
5681 "float", gdbarch_float_format (gdbarch
));
5682 builtin_type
->builtin_double
5683 = arch_float_type (gdbarch
, gdbarch_double_bit (gdbarch
),
5684 "double", gdbarch_double_format (gdbarch
));
5685 builtin_type
->builtin_long_double
5686 = arch_float_type (gdbarch
, gdbarch_long_double_bit (gdbarch
),
5687 "long double", gdbarch_long_double_format (gdbarch
));
5688 builtin_type
->builtin_complex
5689 = init_complex_type ("complex", builtin_type
->builtin_float
);
5690 builtin_type
->builtin_double_complex
5691 = init_complex_type ("double complex", builtin_type
->builtin_double
);
5692 builtin_type
->builtin_string
5693 = arch_type (gdbarch
, TYPE_CODE_STRING
, TARGET_CHAR_BIT
, "string");
5694 builtin_type
->builtin_bool
5695 = arch_type (gdbarch
, TYPE_CODE_BOOL
, TARGET_CHAR_BIT
, "bool");
5697 /* The following three are about decimal floating point types, which
5698 are 32-bits, 64-bits and 128-bits respectively. */
5699 builtin_type
->builtin_decfloat
5700 = arch_decfloat_type (gdbarch
, 32, "_Decimal32");
5701 builtin_type
->builtin_decdouble
5702 = arch_decfloat_type (gdbarch
, 64, "_Decimal64");
5703 builtin_type
->builtin_declong
5704 = arch_decfloat_type (gdbarch
, 128, "_Decimal128");
5706 /* "True" character types. */
5707 builtin_type
->builtin_true_char
5708 = arch_character_type (gdbarch
, TARGET_CHAR_BIT
, 0, "true character");
5709 builtin_type
->builtin_true_unsigned_char
5710 = arch_character_type (gdbarch
, TARGET_CHAR_BIT
, 1, "true character");
5712 /* Fixed-size integer types. */
5713 builtin_type
->builtin_int0
5714 = arch_integer_type (gdbarch
, 0, 0, "int0_t");
5715 builtin_type
->builtin_int8
5716 = arch_integer_type (gdbarch
, 8, 0, "int8_t");
5717 builtin_type
->builtin_uint8
5718 = arch_integer_type (gdbarch
, 8, 1, "uint8_t");
5719 builtin_type
->builtin_int16
5720 = arch_integer_type (gdbarch
, 16, 0, "int16_t");
5721 builtin_type
->builtin_uint16
5722 = arch_integer_type (gdbarch
, 16, 1, "uint16_t");
5723 builtin_type
->builtin_int24
5724 = arch_integer_type (gdbarch
, 24, 0, "int24_t");
5725 builtin_type
->builtin_uint24
5726 = arch_integer_type (gdbarch
, 24, 1, "uint24_t");
5727 builtin_type
->builtin_int32
5728 = arch_integer_type (gdbarch
, 32, 0, "int32_t");
5729 builtin_type
->builtin_uint32
5730 = arch_integer_type (gdbarch
, 32, 1, "uint32_t");
5731 builtin_type
->builtin_int64
5732 = arch_integer_type (gdbarch
, 64, 0, "int64_t");
5733 builtin_type
->builtin_uint64
5734 = arch_integer_type (gdbarch
, 64, 1, "uint64_t");
5735 builtin_type
->builtin_int128
5736 = arch_integer_type (gdbarch
, 128, 0, "int128_t");
5737 builtin_type
->builtin_uint128
5738 = arch_integer_type (gdbarch
, 128, 1, "uint128_t");
5739 TYPE_INSTANCE_FLAGS (builtin_type
->builtin_int8
) |=
5740 TYPE_INSTANCE_FLAG_NOTTEXT
;
5741 TYPE_INSTANCE_FLAGS (builtin_type
->builtin_uint8
) |=
5742 TYPE_INSTANCE_FLAG_NOTTEXT
;
5744 /* Wide character types. */
5745 builtin_type
->builtin_char16
5746 = arch_integer_type (gdbarch
, 16, 1, "char16_t");
5747 builtin_type
->builtin_char32
5748 = arch_integer_type (gdbarch
, 32, 1, "char32_t");
5749 builtin_type
->builtin_wchar
5750 = arch_integer_type (gdbarch
, gdbarch_wchar_bit (gdbarch
),
5751 !gdbarch_wchar_signed (gdbarch
), "wchar_t");
5753 /* Default data/code pointer types. */
5754 builtin_type
->builtin_data_ptr
5755 = lookup_pointer_type (builtin_type
->builtin_void
);
5756 builtin_type
->builtin_func_ptr
5757 = lookup_pointer_type (lookup_function_type (builtin_type
->builtin_void
));
5758 builtin_type
->builtin_func_func
5759 = lookup_function_type (builtin_type
->builtin_func_ptr
);
5761 /* This type represents a GDB internal function. */
5762 builtin_type
->internal_fn
5763 = arch_type (gdbarch
, TYPE_CODE_INTERNAL_FUNCTION
, 0,
5764 "<internal function>");
5766 /* This type represents an xmethod. */
5767 builtin_type
->xmethod
5768 = arch_type (gdbarch
, TYPE_CODE_XMETHOD
, 0, "<xmethod>");
5770 return builtin_type
;
5773 /* This set of objfile-based types is intended to be used by symbol
5774 readers as basic types. */
5776 static const struct objfile_key
<struct objfile_type
,
5777 gdb::noop_deleter
<struct objfile_type
>>
5780 const struct objfile_type
*
5781 objfile_type (struct objfile
*objfile
)
5783 struct gdbarch
*gdbarch
;
5784 struct objfile_type
*objfile_type
= objfile_type_data
.get (objfile
);
5787 return objfile_type
;
5789 objfile_type
= OBSTACK_CALLOC (&objfile
->objfile_obstack
,
5790 1, struct objfile_type
);
5792 /* Use the objfile architecture to determine basic type properties. */
5793 gdbarch
= objfile
->arch ();
5796 objfile_type
->builtin_void
5797 = init_type (objfile
, TYPE_CODE_VOID
, TARGET_CHAR_BIT
, "void");
5798 objfile_type
->builtin_char
5799 = init_integer_type (objfile
, TARGET_CHAR_BIT
,
5800 !gdbarch_char_signed (gdbarch
), "char");
5801 TYPE_NOSIGN (objfile_type
->builtin_char
) = 1;
5802 objfile_type
->builtin_signed_char
5803 = init_integer_type (objfile
, TARGET_CHAR_BIT
,
5805 objfile_type
->builtin_unsigned_char
5806 = init_integer_type (objfile
, TARGET_CHAR_BIT
,
5807 1, "unsigned char");
5808 objfile_type
->builtin_short
5809 = init_integer_type (objfile
, gdbarch_short_bit (gdbarch
),
5811 objfile_type
->builtin_unsigned_short
5812 = init_integer_type (objfile
, gdbarch_short_bit (gdbarch
),
5813 1, "unsigned short");
5814 objfile_type
->builtin_int
5815 = init_integer_type (objfile
, gdbarch_int_bit (gdbarch
),
5817 objfile_type
->builtin_unsigned_int
5818 = init_integer_type (objfile
, gdbarch_int_bit (gdbarch
),
5820 objfile_type
->builtin_long
5821 = init_integer_type (objfile
, gdbarch_long_bit (gdbarch
),
5823 objfile_type
->builtin_unsigned_long
5824 = init_integer_type (objfile
, gdbarch_long_bit (gdbarch
),
5825 1, "unsigned long");
5826 objfile_type
->builtin_long_long
5827 = init_integer_type (objfile
, gdbarch_long_long_bit (gdbarch
),
5829 objfile_type
->builtin_unsigned_long_long
5830 = init_integer_type (objfile
, gdbarch_long_long_bit (gdbarch
),
5831 1, "unsigned long long");
5832 objfile_type
->builtin_float
5833 = init_float_type (objfile
, gdbarch_float_bit (gdbarch
),
5834 "float", gdbarch_float_format (gdbarch
));
5835 objfile_type
->builtin_double
5836 = init_float_type (objfile
, gdbarch_double_bit (gdbarch
),
5837 "double", gdbarch_double_format (gdbarch
));
5838 objfile_type
->builtin_long_double
5839 = init_float_type (objfile
, gdbarch_long_double_bit (gdbarch
),
5840 "long double", gdbarch_long_double_format (gdbarch
));
5842 /* This type represents a type that was unrecognized in symbol read-in. */
5843 objfile_type
->builtin_error
5844 = init_type (objfile
, TYPE_CODE_ERROR
, 0, "<unknown type>");
5846 /* The following set of types is used for symbols with no
5847 debug information. */
5848 objfile_type
->nodebug_text_symbol
5849 = init_type (objfile
, TYPE_CODE_FUNC
, TARGET_CHAR_BIT
,
5850 "<text variable, no debug info>");
5851 objfile_type
->nodebug_text_gnu_ifunc_symbol
5852 = init_type (objfile
, TYPE_CODE_FUNC
, TARGET_CHAR_BIT
,
5853 "<text gnu-indirect-function variable, no debug info>");
5854 TYPE_GNU_IFUNC (objfile_type
->nodebug_text_gnu_ifunc_symbol
) = 1;
5855 objfile_type
->nodebug_got_plt_symbol
5856 = init_pointer_type (objfile
, gdbarch_addr_bit (gdbarch
),
5857 "<text from jump slot in .got.plt, no debug info>",
5858 objfile_type
->nodebug_text_symbol
);
5859 objfile_type
->nodebug_data_symbol
5860 = init_nodebug_var_type (objfile
, "<data variable, no debug info>");
5861 objfile_type
->nodebug_unknown_symbol
5862 = init_nodebug_var_type (objfile
, "<variable (not text or data), no debug info>");
5863 objfile_type
->nodebug_tls_symbol
5864 = init_nodebug_var_type (objfile
, "<thread local variable, no debug info>");
5866 /* NOTE: on some targets, addresses and pointers are not necessarily
5870 - gdb's `struct type' always describes the target's
5872 - gdb's `struct value' objects should always hold values in
5874 - gdb's CORE_ADDR values are addresses in the unified virtual
5875 address space that the assembler and linker work with. Thus,
5876 since target_read_memory takes a CORE_ADDR as an argument, it
5877 can access any memory on the target, even if the processor has
5878 separate code and data address spaces.
5880 In this context, objfile_type->builtin_core_addr is a bit odd:
5881 it's a target type for a value the target will never see. It's
5882 only used to hold the values of (typeless) linker symbols, which
5883 are indeed in the unified virtual address space. */
5885 objfile_type
->builtin_core_addr
5886 = init_integer_type (objfile
, gdbarch_addr_bit (gdbarch
), 1,
5889 objfile_type_data
.set (objfile
, objfile_type
);
5890 return objfile_type
;
5893 void _initialize_gdbtypes ();
5895 _initialize_gdbtypes ()
5897 gdbtypes_data
= gdbarch_data_register_post_init (gdbtypes_post_init
);
5899 add_setshow_zuinteger_cmd ("overload", no_class
, &overload_debug
,
5900 _("Set debugging of C++ overloading."),
5901 _("Show debugging of C++ overloading."),
5902 _("When enabled, ranking of the "
5903 "functions is displayed."),
5905 show_overload_debug
,
5906 &setdebuglist
, &showdebuglist
);
5908 /* Add user knob for controlling resolution of opaque types. */
5909 add_setshow_boolean_cmd ("opaque-type-resolution", class_support
,
5910 &opaque_type_resolution
,
5911 _("Set resolution of opaque struct/class/union"
5912 " types (if set before loading symbols)."),
5913 _("Show resolution of opaque struct/class/union"
5914 " types (if set before loading symbols)."),
5916 show_opaque_type_resolution
,
5917 &setlist
, &showlist
);
5919 /* Add an option to permit non-strict type checking. */
5920 add_setshow_boolean_cmd ("type", class_support
,
5921 &strict_type_checking
,
5922 _("Set strict type checking."),
5923 _("Show strict type checking."),
5925 show_strict_type_checking
,
5926 &setchecklist
, &showchecklist
);