1 /* Support routines for manipulating internal types for GDB.
3 Copyright (C) 1992-2020 Free Software Foundation, Inc.
5 Contributed by Cygnus Support, using pieces from other GDB modules.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
28 #include "expression.h"
33 #include "complaints.h"
37 #include "cp-support.h"
39 #include "dwarf2/loc.h"
41 #include "floatformat.h"
44 /* Initialize BADNESS constants. */
46 const struct rank LENGTH_MISMATCH_BADNESS
= {100,0};
48 const struct rank TOO_FEW_PARAMS_BADNESS
= {100,0};
49 const struct rank INCOMPATIBLE_TYPE_BADNESS
= {100,0};
51 const struct rank EXACT_MATCH_BADNESS
= {0,0};
53 const struct rank INTEGER_PROMOTION_BADNESS
= {1,0};
54 const struct rank FLOAT_PROMOTION_BADNESS
= {1,0};
55 const struct rank BASE_PTR_CONVERSION_BADNESS
= {1,0};
56 const struct rank CV_CONVERSION_BADNESS
= {1, 0};
57 const struct rank INTEGER_CONVERSION_BADNESS
= {2,0};
58 const struct rank FLOAT_CONVERSION_BADNESS
= {2,0};
59 const struct rank INT_FLOAT_CONVERSION_BADNESS
= {2,0};
60 const struct rank VOID_PTR_CONVERSION_BADNESS
= {2,0};
61 const struct rank BOOL_CONVERSION_BADNESS
= {3,0};
62 const struct rank BASE_CONVERSION_BADNESS
= {2,0};
63 const struct rank REFERENCE_CONVERSION_BADNESS
= {2,0};
64 const struct rank REFERENCE_SEE_THROUGH_BADNESS
= {0,1};
65 const struct rank NULL_POINTER_CONVERSION_BADNESS
= {2,0};
66 const struct rank NS_POINTER_CONVERSION_BADNESS
= {10,0};
67 const struct rank NS_INTEGER_POINTER_CONVERSION_BADNESS
= {3,0};
69 /* Floatformat pairs. */
70 const struct floatformat
*floatformats_ieee_half
[BFD_ENDIAN_UNKNOWN
] = {
71 &floatformat_ieee_half_big
,
72 &floatformat_ieee_half_little
74 const struct floatformat
*floatformats_ieee_single
[BFD_ENDIAN_UNKNOWN
] = {
75 &floatformat_ieee_single_big
,
76 &floatformat_ieee_single_little
78 const struct floatformat
*floatformats_ieee_double
[BFD_ENDIAN_UNKNOWN
] = {
79 &floatformat_ieee_double_big
,
80 &floatformat_ieee_double_little
82 const struct floatformat
*floatformats_ieee_double_littlebyte_bigword
[BFD_ENDIAN_UNKNOWN
] = {
83 &floatformat_ieee_double_big
,
84 &floatformat_ieee_double_littlebyte_bigword
86 const struct floatformat
*floatformats_i387_ext
[BFD_ENDIAN_UNKNOWN
] = {
87 &floatformat_i387_ext
,
90 const struct floatformat
*floatformats_m68881_ext
[BFD_ENDIAN_UNKNOWN
] = {
91 &floatformat_m68881_ext
,
92 &floatformat_m68881_ext
94 const struct floatformat
*floatformats_arm_ext
[BFD_ENDIAN_UNKNOWN
] = {
95 &floatformat_arm_ext_big
,
96 &floatformat_arm_ext_littlebyte_bigword
98 const struct floatformat
*floatformats_ia64_spill
[BFD_ENDIAN_UNKNOWN
] = {
99 &floatformat_ia64_spill_big
,
100 &floatformat_ia64_spill_little
102 const struct floatformat
*floatformats_ia64_quad
[BFD_ENDIAN_UNKNOWN
] = {
103 &floatformat_ia64_quad_big
,
104 &floatformat_ia64_quad_little
106 const struct floatformat
*floatformats_vax_f
[BFD_ENDIAN_UNKNOWN
] = {
110 const struct floatformat
*floatformats_vax_d
[BFD_ENDIAN_UNKNOWN
] = {
114 const struct floatformat
*floatformats_ibm_long_double
[BFD_ENDIAN_UNKNOWN
] = {
115 &floatformat_ibm_long_double_big
,
116 &floatformat_ibm_long_double_little
119 /* Should opaque types be resolved? */
121 static bool opaque_type_resolution
= true;
123 /* See gdbtypes.h. */
125 unsigned int overload_debug
= 0;
127 /* A flag to enable strict type checking. */
129 static bool strict_type_checking
= true;
131 /* A function to show whether opaque types are resolved. */
134 show_opaque_type_resolution (struct ui_file
*file
, int from_tty
,
135 struct cmd_list_element
*c
,
138 fprintf_filtered (file
, _("Resolution of opaque struct/class/union types "
139 "(if set before loading symbols) is %s.\n"),
143 /* A function to show whether C++ overload debugging is enabled. */
146 show_overload_debug (struct ui_file
*file
, int from_tty
,
147 struct cmd_list_element
*c
, const char *value
)
149 fprintf_filtered (file
, _("Debugging of C++ overloading is %s.\n"),
153 /* A function to show the status of strict type checking. */
156 show_strict_type_checking (struct ui_file
*file
, int from_tty
,
157 struct cmd_list_element
*c
, const char *value
)
159 fprintf_filtered (file
, _("Strict type checking is %s.\n"), value
);
163 /* Allocate a new OBJFILE-associated type structure and fill it
164 with some defaults. Space for the type structure is allocated
165 on the objfile's objfile_obstack. */
168 alloc_type (struct objfile
*objfile
)
172 gdb_assert (objfile
!= NULL
);
174 /* Alloc the structure and start off with all fields zeroed. */
175 type
= OBSTACK_ZALLOC (&objfile
->objfile_obstack
, struct type
);
176 TYPE_MAIN_TYPE (type
) = OBSTACK_ZALLOC (&objfile
->objfile_obstack
,
178 OBJSTAT (objfile
, n_types
++);
180 TYPE_OBJFILE_OWNED (type
) = 1;
181 TYPE_OWNER (type
).objfile
= objfile
;
183 /* Initialize the fields that might not be zero. */
185 type
->set_code (TYPE_CODE_UNDEF
);
186 TYPE_CHAIN (type
) = type
; /* Chain back to itself. */
191 /* Allocate a new GDBARCH-associated type structure and fill it
192 with some defaults. Space for the type structure is allocated
193 on the obstack associated with GDBARCH. */
196 alloc_type_arch (struct gdbarch
*gdbarch
)
200 gdb_assert (gdbarch
!= NULL
);
202 /* Alloc the structure and start off with all fields zeroed. */
204 type
= GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct type
);
205 TYPE_MAIN_TYPE (type
) = GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct main_type
);
207 TYPE_OBJFILE_OWNED (type
) = 0;
208 TYPE_OWNER (type
).gdbarch
= gdbarch
;
210 /* Initialize the fields that might not be zero. */
212 type
->set_code (TYPE_CODE_UNDEF
);
213 TYPE_CHAIN (type
) = type
; /* Chain back to itself. */
218 /* If TYPE is objfile-associated, allocate a new type structure
219 associated with the same objfile. If TYPE is gdbarch-associated,
220 allocate a new type structure associated with the same gdbarch. */
223 alloc_type_copy (const struct type
*type
)
225 if (TYPE_OBJFILE_OWNED (type
))
226 return alloc_type (TYPE_OWNER (type
).objfile
);
228 return alloc_type_arch (TYPE_OWNER (type
).gdbarch
);
231 /* If TYPE is gdbarch-associated, return that architecture.
232 If TYPE is objfile-associated, return that objfile's architecture. */
235 get_type_arch (const struct type
*type
)
237 struct gdbarch
*arch
;
239 if (TYPE_OBJFILE_OWNED (type
))
240 arch
= TYPE_OWNER (type
).objfile
->arch ();
242 arch
= TYPE_OWNER (type
).gdbarch
;
244 /* The ARCH can be NULL if TYPE is associated with neither an objfile nor
245 a gdbarch, however, this is very rare, and even then, in most cases
246 that get_type_arch is called, we assume that a non-NULL value is
248 gdb_assert (arch
!= NULL
);
252 /* See gdbtypes.h. */
255 get_target_type (struct type
*type
)
259 type
= TYPE_TARGET_TYPE (type
);
261 type
= check_typedef (type
);
267 /* See gdbtypes.h. */
270 type_length_units (struct type
*type
)
272 struct gdbarch
*arch
= get_type_arch (type
);
273 int unit_size
= gdbarch_addressable_memory_unit_size (arch
);
275 return TYPE_LENGTH (type
) / unit_size
;
278 /* Alloc a new type instance structure, fill it with some defaults,
279 and point it at OLDTYPE. Allocate the new type instance from the
280 same place as OLDTYPE. */
283 alloc_type_instance (struct type
*oldtype
)
287 /* Allocate the structure. */
289 if (! TYPE_OBJFILE_OWNED (oldtype
))
290 type
= GDBARCH_OBSTACK_ZALLOC (get_type_arch (oldtype
), struct type
);
292 type
= OBSTACK_ZALLOC (&TYPE_OBJFILE (oldtype
)->objfile_obstack
,
295 TYPE_MAIN_TYPE (type
) = TYPE_MAIN_TYPE (oldtype
);
297 TYPE_CHAIN (type
) = type
; /* Chain back to itself for now. */
302 /* Clear all remnants of the previous type at TYPE, in preparation for
303 replacing it with something else. Preserve owner information. */
306 smash_type (struct type
*type
)
308 int objfile_owned
= TYPE_OBJFILE_OWNED (type
);
309 union type_owner owner
= TYPE_OWNER (type
);
311 memset (TYPE_MAIN_TYPE (type
), 0, sizeof (struct main_type
));
313 /* Restore owner information. */
314 TYPE_OBJFILE_OWNED (type
) = objfile_owned
;
315 TYPE_OWNER (type
) = owner
;
317 /* For now, delete the rings. */
318 TYPE_CHAIN (type
) = type
;
320 /* For now, leave the pointer/reference types alone. */
323 /* Lookup a pointer to a type TYPE. TYPEPTR, if nonzero, points
324 to a pointer to memory where the pointer type should be stored.
325 If *TYPEPTR is zero, update it to point to the pointer type we return.
326 We allocate new memory if needed. */
329 make_pointer_type (struct type
*type
, struct type
**typeptr
)
331 struct type
*ntype
; /* New type */
334 ntype
= TYPE_POINTER_TYPE (type
);
339 return ntype
; /* Don't care about alloc,
340 and have new type. */
341 else if (*typeptr
== 0)
343 *typeptr
= ntype
; /* Tracking alloc, and have new type. */
348 if (typeptr
== 0 || *typeptr
== 0) /* We'll need to allocate one. */
350 ntype
= alloc_type_copy (type
);
354 else /* We have storage, but need to reset it. */
357 chain
= TYPE_CHAIN (ntype
);
359 TYPE_CHAIN (ntype
) = chain
;
362 TYPE_TARGET_TYPE (ntype
) = type
;
363 TYPE_POINTER_TYPE (type
) = ntype
;
365 /* FIXME! Assumes the machine has only one representation for pointers! */
368 = gdbarch_ptr_bit (get_type_arch (type
)) / TARGET_CHAR_BIT
;
369 ntype
->set_code (TYPE_CODE_PTR
);
371 /* Mark pointers as unsigned. The target converts between pointers
372 and addresses (CORE_ADDRs) using gdbarch_pointer_to_address and
373 gdbarch_address_to_pointer. */
374 TYPE_UNSIGNED (ntype
) = 1;
376 /* Update the length of all the other variants of this type. */
377 chain
= TYPE_CHAIN (ntype
);
378 while (chain
!= ntype
)
380 TYPE_LENGTH (chain
) = TYPE_LENGTH (ntype
);
381 chain
= TYPE_CHAIN (chain
);
387 /* Given a type TYPE, return a type of pointers to that type.
388 May need to construct such a type if this is the first use. */
391 lookup_pointer_type (struct type
*type
)
393 return make_pointer_type (type
, (struct type
**) 0);
396 /* Lookup a C++ `reference' to a type TYPE. TYPEPTR, if nonzero,
397 points to a pointer to memory where the reference type should be
398 stored. If *TYPEPTR is zero, update it to point to the reference
399 type we return. We allocate new memory if needed. REFCODE denotes
400 the kind of reference type to lookup (lvalue or rvalue reference). */
403 make_reference_type (struct type
*type
, struct type
**typeptr
,
404 enum type_code refcode
)
406 struct type
*ntype
; /* New type */
407 struct type
**reftype
;
410 gdb_assert (refcode
== TYPE_CODE_REF
|| refcode
== TYPE_CODE_RVALUE_REF
);
412 ntype
= (refcode
== TYPE_CODE_REF
? TYPE_REFERENCE_TYPE (type
)
413 : TYPE_RVALUE_REFERENCE_TYPE (type
));
418 return ntype
; /* Don't care about alloc,
419 and have new type. */
420 else if (*typeptr
== 0)
422 *typeptr
= ntype
; /* Tracking alloc, and have new type. */
427 if (typeptr
== 0 || *typeptr
== 0) /* We'll need to allocate one. */
429 ntype
= alloc_type_copy (type
);
433 else /* We have storage, but need to reset it. */
436 chain
= TYPE_CHAIN (ntype
);
438 TYPE_CHAIN (ntype
) = chain
;
441 TYPE_TARGET_TYPE (ntype
) = type
;
442 reftype
= (refcode
== TYPE_CODE_REF
? &TYPE_REFERENCE_TYPE (type
)
443 : &TYPE_RVALUE_REFERENCE_TYPE (type
));
447 /* FIXME! Assume the machine has only one representation for
448 references, and that it matches the (only) representation for
451 TYPE_LENGTH (ntype
) =
452 gdbarch_ptr_bit (get_type_arch (type
)) / TARGET_CHAR_BIT
;
453 ntype
->set_code (refcode
);
457 /* Update the length of all the other variants of this type. */
458 chain
= TYPE_CHAIN (ntype
);
459 while (chain
!= ntype
)
461 TYPE_LENGTH (chain
) = TYPE_LENGTH (ntype
);
462 chain
= TYPE_CHAIN (chain
);
468 /* Same as above, but caller doesn't care about memory allocation
472 lookup_reference_type (struct type
*type
, enum type_code refcode
)
474 return make_reference_type (type
, (struct type
**) 0, refcode
);
477 /* Lookup the lvalue reference type for the type TYPE. */
480 lookup_lvalue_reference_type (struct type
*type
)
482 return lookup_reference_type (type
, TYPE_CODE_REF
);
485 /* Lookup the rvalue reference type for the type TYPE. */
488 lookup_rvalue_reference_type (struct type
*type
)
490 return lookup_reference_type (type
, TYPE_CODE_RVALUE_REF
);
493 /* Lookup a function type that returns type TYPE. TYPEPTR, if
494 nonzero, points to a pointer to memory where the function type
495 should be stored. If *TYPEPTR is zero, update it to point to the
496 function type we return. We allocate new memory if needed. */
499 make_function_type (struct type
*type
, struct type
**typeptr
)
501 struct type
*ntype
; /* New type */
503 if (typeptr
== 0 || *typeptr
== 0) /* We'll need to allocate one. */
505 ntype
= alloc_type_copy (type
);
509 else /* We have storage, but need to reset it. */
515 TYPE_TARGET_TYPE (ntype
) = type
;
517 TYPE_LENGTH (ntype
) = 1;
518 ntype
->set_code (TYPE_CODE_FUNC
);
520 INIT_FUNC_SPECIFIC (ntype
);
525 /* Given a type TYPE, return a type of functions that return that type.
526 May need to construct such a type if this is the first use. */
529 lookup_function_type (struct type
*type
)
531 return make_function_type (type
, (struct type
**) 0);
534 /* Given a type TYPE and argument types, return the appropriate
535 function type. If the final type in PARAM_TYPES is NULL, make a
539 lookup_function_type_with_arguments (struct type
*type
,
541 struct type
**param_types
)
543 struct type
*fn
= make_function_type (type
, (struct type
**) 0);
548 if (param_types
[nparams
- 1] == NULL
)
551 TYPE_VARARGS (fn
) = 1;
553 else if (check_typedef (param_types
[nparams
- 1])->code ()
557 /* Caller should have ensured this. */
558 gdb_assert (nparams
== 0);
559 TYPE_PROTOTYPED (fn
) = 1;
562 TYPE_PROTOTYPED (fn
) = 1;
565 fn
->set_num_fields (nparams
);
567 ((struct field
*) TYPE_ZALLOC (fn
, nparams
* sizeof (struct field
)));
568 for (i
= 0; i
< nparams
; ++i
)
569 fn
->field (i
).set_type (param_types
[i
]);
574 /* Identify address space identifier by name --
575 return the integer flag defined in gdbtypes.h. */
578 address_space_name_to_int (struct gdbarch
*gdbarch
,
579 const char *space_identifier
)
583 /* Check for known address space delimiters. */
584 if (!strcmp (space_identifier
, "code"))
585 return TYPE_INSTANCE_FLAG_CODE_SPACE
;
586 else if (!strcmp (space_identifier
, "data"))
587 return TYPE_INSTANCE_FLAG_DATA_SPACE
;
588 else if (gdbarch_address_class_name_to_type_flags_p (gdbarch
)
589 && gdbarch_address_class_name_to_type_flags (gdbarch
,
594 error (_("Unknown address space specifier: \"%s\""), space_identifier
);
597 /* Identify address space identifier by integer flag as defined in
598 gdbtypes.h -- return the string version of the adress space name. */
601 address_space_int_to_name (struct gdbarch
*gdbarch
, int space_flag
)
603 if (space_flag
& TYPE_INSTANCE_FLAG_CODE_SPACE
)
605 else if (space_flag
& TYPE_INSTANCE_FLAG_DATA_SPACE
)
607 else if ((space_flag
& TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL
)
608 && gdbarch_address_class_type_flags_to_name_p (gdbarch
))
609 return gdbarch_address_class_type_flags_to_name (gdbarch
, space_flag
);
614 /* Create a new type with instance flags NEW_FLAGS, based on TYPE.
616 If STORAGE is non-NULL, create the new type instance there.
617 STORAGE must be in the same obstack as TYPE. */
620 make_qualified_type (struct type
*type
, int new_flags
,
621 struct type
*storage
)
628 if (TYPE_INSTANCE_FLAGS (ntype
) == new_flags
)
630 ntype
= TYPE_CHAIN (ntype
);
632 while (ntype
!= type
);
634 /* Create a new type instance. */
636 ntype
= alloc_type_instance (type
);
639 /* If STORAGE was provided, it had better be in the same objfile
640 as TYPE. Otherwise, we can't link it into TYPE's cv chain:
641 if one objfile is freed and the other kept, we'd have
642 dangling pointers. */
643 gdb_assert (TYPE_OBJFILE (type
) == TYPE_OBJFILE (storage
));
646 TYPE_MAIN_TYPE (ntype
) = TYPE_MAIN_TYPE (type
);
647 TYPE_CHAIN (ntype
) = ntype
;
650 /* Pointers or references to the original type are not relevant to
652 TYPE_POINTER_TYPE (ntype
) = (struct type
*) 0;
653 TYPE_REFERENCE_TYPE (ntype
) = (struct type
*) 0;
655 /* Chain the new qualified type to the old type. */
656 TYPE_CHAIN (ntype
) = TYPE_CHAIN (type
);
657 TYPE_CHAIN (type
) = ntype
;
659 /* Now set the instance flags and return the new type. */
660 TYPE_INSTANCE_FLAGS (ntype
) = new_flags
;
662 /* Set length of new type to that of the original type. */
663 TYPE_LENGTH (ntype
) = TYPE_LENGTH (type
);
668 /* Make an address-space-delimited variant of a type -- a type that
669 is identical to the one supplied except that it has an address
670 space attribute attached to it (such as "code" or "data").
672 The space attributes "code" and "data" are for Harvard
673 architectures. The address space attributes are for architectures
674 which have alternately sized pointers or pointers with alternate
678 make_type_with_address_space (struct type
*type
, int space_flag
)
680 int new_flags
= ((TYPE_INSTANCE_FLAGS (type
)
681 & ~(TYPE_INSTANCE_FLAG_CODE_SPACE
682 | TYPE_INSTANCE_FLAG_DATA_SPACE
683 | TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL
))
686 return make_qualified_type (type
, new_flags
, NULL
);
689 /* Make a "c-v" variant of a type -- a type that is identical to the
690 one supplied except that it may have const or volatile attributes
691 CNST is a flag for setting the const attribute
692 VOLTL is a flag for setting the volatile attribute
693 TYPE is the base type whose variant we are creating.
695 If TYPEPTR and *TYPEPTR are non-zero, then *TYPEPTR points to
696 storage to hold the new qualified type; *TYPEPTR and TYPE must be
697 in the same objfile. Otherwise, allocate fresh memory for the new
698 type whereever TYPE lives. If TYPEPTR is non-zero, set it to the
699 new type we construct. */
702 make_cv_type (int cnst
, int voltl
,
704 struct type
**typeptr
)
706 struct type
*ntype
; /* New type */
708 int new_flags
= (TYPE_INSTANCE_FLAGS (type
)
709 & ~(TYPE_INSTANCE_FLAG_CONST
710 | TYPE_INSTANCE_FLAG_VOLATILE
));
713 new_flags
|= TYPE_INSTANCE_FLAG_CONST
;
716 new_flags
|= TYPE_INSTANCE_FLAG_VOLATILE
;
718 if (typeptr
&& *typeptr
!= NULL
)
720 /* TYPE and *TYPEPTR must be in the same objfile. We can't have
721 a C-V variant chain that threads across objfiles: if one
722 objfile gets freed, then the other has a broken C-V chain.
724 This code used to try to copy over the main type from TYPE to
725 *TYPEPTR if they were in different objfiles, but that's
726 wrong, too: TYPE may have a field list or member function
727 lists, which refer to types of their own, etc. etc. The
728 whole shebang would need to be copied over recursively; you
729 can't have inter-objfile pointers. The only thing to do is
730 to leave stub types as stub types, and look them up afresh by
731 name each time you encounter them. */
732 gdb_assert (TYPE_OBJFILE (*typeptr
) == TYPE_OBJFILE (type
));
735 ntype
= make_qualified_type (type
, new_flags
,
736 typeptr
? *typeptr
: NULL
);
744 /* Make a 'restrict'-qualified version of TYPE. */
747 make_restrict_type (struct type
*type
)
749 return make_qualified_type (type
,
750 (TYPE_INSTANCE_FLAGS (type
)
751 | TYPE_INSTANCE_FLAG_RESTRICT
),
755 /* Make a type without const, volatile, or restrict. */
758 make_unqualified_type (struct type
*type
)
760 return make_qualified_type (type
,
761 (TYPE_INSTANCE_FLAGS (type
)
762 & ~(TYPE_INSTANCE_FLAG_CONST
763 | TYPE_INSTANCE_FLAG_VOLATILE
764 | TYPE_INSTANCE_FLAG_RESTRICT
)),
768 /* Make a '_Atomic'-qualified version of TYPE. */
771 make_atomic_type (struct type
*type
)
773 return make_qualified_type (type
,
774 (TYPE_INSTANCE_FLAGS (type
)
775 | TYPE_INSTANCE_FLAG_ATOMIC
),
779 /* Replace the contents of ntype with the type *type. This changes the
780 contents, rather than the pointer for TYPE_MAIN_TYPE (ntype); thus
781 the changes are propogated to all types in the TYPE_CHAIN.
783 In order to build recursive types, it's inevitable that we'll need
784 to update types in place --- but this sort of indiscriminate
785 smashing is ugly, and needs to be replaced with something more
786 controlled. TYPE_MAIN_TYPE is a step in this direction; it's not
787 clear if more steps are needed. */
790 replace_type (struct type
*ntype
, struct type
*type
)
794 /* These two types had better be in the same objfile. Otherwise,
795 the assignment of one type's main type structure to the other
796 will produce a type with references to objects (names; field
797 lists; etc.) allocated on an objfile other than its own. */
798 gdb_assert (TYPE_OBJFILE (ntype
) == TYPE_OBJFILE (type
));
800 *TYPE_MAIN_TYPE (ntype
) = *TYPE_MAIN_TYPE (type
);
802 /* The type length is not a part of the main type. Update it for
803 each type on the variant chain. */
807 /* Assert that this element of the chain has no address-class bits
808 set in its flags. Such type variants might have type lengths
809 which are supposed to be different from the non-address-class
810 variants. This assertion shouldn't ever be triggered because
811 symbol readers which do construct address-class variants don't
812 call replace_type(). */
813 gdb_assert (TYPE_ADDRESS_CLASS_ALL (chain
) == 0);
815 TYPE_LENGTH (chain
) = TYPE_LENGTH (type
);
816 chain
= TYPE_CHAIN (chain
);
818 while (ntype
!= chain
);
820 /* Assert that the two types have equivalent instance qualifiers.
821 This should be true for at least all of our debug readers. */
822 gdb_assert (TYPE_INSTANCE_FLAGS (ntype
) == TYPE_INSTANCE_FLAGS (type
));
825 /* Implement direct support for MEMBER_TYPE in GNU C++.
826 May need to construct such a type if this is the first use.
827 The TYPE is the type of the member. The DOMAIN is the type
828 of the aggregate that the member belongs to. */
831 lookup_memberptr_type (struct type
*type
, struct type
*domain
)
835 mtype
= alloc_type_copy (type
);
836 smash_to_memberptr_type (mtype
, domain
, type
);
840 /* Return a pointer-to-method type, for a method of type TO_TYPE. */
843 lookup_methodptr_type (struct type
*to_type
)
847 mtype
= alloc_type_copy (to_type
);
848 smash_to_methodptr_type (mtype
, to_type
);
852 /* Allocate a stub method whose return type is TYPE. This apparently
853 happens for speed of symbol reading, since parsing out the
854 arguments to the method is cpu-intensive, the way we are doing it.
855 So, we will fill in arguments later. This always returns a fresh
859 allocate_stub_method (struct type
*type
)
863 mtype
= alloc_type_copy (type
);
864 mtype
->set_code (TYPE_CODE_METHOD
);
865 TYPE_LENGTH (mtype
) = 1;
866 TYPE_STUB (mtype
) = 1;
867 TYPE_TARGET_TYPE (mtype
) = type
;
868 /* TYPE_SELF_TYPE (mtype) = unknown yet */
872 /* See gdbtypes.h. */
875 operator== (const dynamic_prop
&l
, const dynamic_prop
&r
)
877 if (l
.kind
!= r
.kind
)
885 return l
.data
.const_val
== r
.data
.const_val
;
886 case PROP_ADDR_OFFSET
:
889 return l
.data
.baton
== r
.data
.baton
;
890 case PROP_VARIANT_PARTS
:
891 return l
.data
.variant_parts
== r
.data
.variant_parts
;
893 return l
.data
.original_type
== r
.data
.original_type
;
896 gdb_assert_not_reached ("unhandled dynamic_prop kind");
899 /* See gdbtypes.h. */
902 operator== (const range_bounds
&l
, const range_bounds
&r
)
904 #define FIELD_EQ(FIELD) (l.FIELD == r.FIELD)
906 return (FIELD_EQ (low
)
908 && FIELD_EQ (flag_upper_bound_is_count
)
909 && FIELD_EQ (flag_bound_evaluated
)
915 /* Create a range type with a dynamic range from LOW_BOUND to
916 HIGH_BOUND, inclusive. See create_range_type for further details. */
919 create_range_type (struct type
*result_type
, struct type
*index_type
,
920 const struct dynamic_prop
*low_bound
,
921 const struct dynamic_prop
*high_bound
,
924 /* The INDEX_TYPE should be a type capable of holding the upper and lower
925 bounds, as such a zero sized, or void type makes no sense. */
926 gdb_assert (index_type
->code () != TYPE_CODE_VOID
);
927 gdb_assert (TYPE_LENGTH (index_type
) > 0);
929 if (result_type
== NULL
)
930 result_type
= alloc_type_copy (index_type
);
931 result_type
->set_code (TYPE_CODE_RANGE
);
932 TYPE_TARGET_TYPE (result_type
) = index_type
;
933 if (TYPE_STUB (index_type
))
934 TYPE_TARGET_STUB (result_type
) = 1;
936 TYPE_LENGTH (result_type
) = TYPE_LENGTH (check_typedef (index_type
));
939 = (struct range_bounds
*) TYPE_ZALLOC (result_type
, sizeof (range_bounds
));
940 bounds
->low
= *low_bound
;
941 bounds
->high
= *high_bound
;
944 /* Initialize the stride to be a constant, the value will already be zero
945 thanks to the use of TYPE_ZALLOC above. */
946 bounds
->stride
.kind
= PROP_CONST
;
948 result_type
->set_bounds (bounds
);
950 if (low_bound
->kind
== PROP_CONST
&& low_bound
->data
.const_val
>= 0)
951 TYPE_UNSIGNED (result_type
) = 1;
953 /* Ada allows the declaration of range types whose upper bound is
954 less than the lower bound, so checking the lower bound is not
955 enough. Make sure we do not mark a range type whose upper bound
956 is negative as unsigned. */
957 if (high_bound
->kind
== PROP_CONST
&& high_bound
->data
.const_val
< 0)
958 TYPE_UNSIGNED (result_type
) = 0;
960 TYPE_ENDIANITY_NOT_DEFAULT (result_type
)
961 = TYPE_ENDIANITY_NOT_DEFAULT (index_type
);
966 /* See gdbtypes.h. */
969 create_range_type_with_stride (struct type
*result_type
,
970 struct type
*index_type
,
971 const struct dynamic_prop
*low_bound
,
972 const struct dynamic_prop
*high_bound
,
974 const struct dynamic_prop
*stride
,
977 result_type
= create_range_type (result_type
, index_type
, low_bound
,
980 gdb_assert (stride
!= nullptr);
981 result_type
->bounds ()->stride
= *stride
;
982 result_type
->bounds ()->flag_is_byte_stride
= byte_stride_p
;
989 /* Create a range type using either a blank type supplied in
990 RESULT_TYPE, or creating a new type, inheriting the objfile from
993 Indices will be of type INDEX_TYPE, and will range from LOW_BOUND
994 to HIGH_BOUND, inclusive.
996 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
997 sure it is TYPE_CODE_UNDEF before we bash it into a range type? */
1000 create_static_range_type (struct type
*result_type
, struct type
*index_type
,
1001 LONGEST low_bound
, LONGEST high_bound
)
1003 struct dynamic_prop low
, high
;
1005 low
.kind
= PROP_CONST
;
1006 low
.data
.const_val
= low_bound
;
1008 high
.kind
= PROP_CONST
;
1009 high
.data
.const_val
= high_bound
;
1011 result_type
= create_range_type (result_type
, index_type
, &low
, &high
, 0);
1016 /* Predicate tests whether BOUNDS are static. Returns 1 if all bounds values
1017 are static, otherwise returns 0. */
1020 has_static_range (const struct range_bounds
*bounds
)
1022 /* If the range doesn't have a defined stride then its stride field will
1023 be initialized to the constant 0. */
1024 return (bounds
->low
.kind
== PROP_CONST
1025 && bounds
->high
.kind
== PROP_CONST
1026 && bounds
->stride
.kind
== PROP_CONST
);
1030 /* Set *LOWP and *HIGHP to the lower and upper bounds of discrete type
1031 TYPE. Return 1 if type is a range type, 0 if it is discrete (and
1032 bounds will fit in LONGEST), or -1 otherwise. */
1035 get_discrete_bounds (struct type
*type
, LONGEST
*lowp
, LONGEST
*highp
)
1037 type
= check_typedef (type
);
1038 switch (type
->code ())
1040 case TYPE_CODE_RANGE
:
1041 *lowp
= TYPE_LOW_BOUND (type
);
1042 *highp
= TYPE_HIGH_BOUND (type
);
1043 if (TYPE_TARGET_TYPE (type
)->code () == TYPE_CODE_ENUM
)
1045 if (!discrete_position (TYPE_TARGET_TYPE (type
), *lowp
, lowp
)
1046 || ! discrete_position (TYPE_TARGET_TYPE (type
), *highp
, highp
))
1050 case TYPE_CODE_ENUM
:
1051 if (type
->num_fields () > 0)
1053 /* The enums may not be sorted by value, so search all
1057 *lowp
= *highp
= TYPE_FIELD_ENUMVAL (type
, 0);
1058 for (i
= 0; i
< type
->num_fields (); i
++)
1060 if (TYPE_FIELD_ENUMVAL (type
, i
) < *lowp
)
1061 *lowp
= TYPE_FIELD_ENUMVAL (type
, i
);
1062 if (TYPE_FIELD_ENUMVAL (type
, i
) > *highp
)
1063 *highp
= TYPE_FIELD_ENUMVAL (type
, i
);
1066 /* Set unsigned indicator if warranted. */
1069 TYPE_UNSIGNED (type
) = 1;
1078 case TYPE_CODE_BOOL
:
1083 if (TYPE_LENGTH (type
) > sizeof (LONGEST
)) /* Too big */
1085 if (!TYPE_UNSIGNED (type
))
1087 *lowp
= -(1 << (TYPE_LENGTH (type
) * TARGET_CHAR_BIT
- 1));
1088 *highp
= -*lowp
- 1;
1092 case TYPE_CODE_CHAR
:
1094 /* This round-about calculation is to avoid shifting by
1095 TYPE_LENGTH (type) * TARGET_CHAR_BIT, which will not work
1096 if TYPE_LENGTH (type) == sizeof (LONGEST). */
1097 *highp
= 1 << (TYPE_LENGTH (type
) * TARGET_CHAR_BIT
- 1);
1098 *highp
= (*highp
- 1) | *highp
;
1105 /* Assuming TYPE is a simple, non-empty array type, compute its upper
1106 and lower bound. Save the low bound into LOW_BOUND if not NULL.
1107 Save the high bound into HIGH_BOUND if not NULL.
1109 Return 1 if the operation was successful. Return zero otherwise,
1110 in which case the values of LOW_BOUND and HIGH_BOUNDS are unmodified.
1112 We now simply use get_discrete_bounds call to get the values
1113 of the low and high bounds.
1114 get_discrete_bounds can return three values:
1115 1, meaning that index is a range,
1116 0, meaning that index is a discrete type,
1117 or -1 for failure. */
1120 get_array_bounds (struct type
*type
, LONGEST
*low_bound
, LONGEST
*high_bound
)
1122 struct type
*index
= type
->index_type ();
1130 res
= get_discrete_bounds (index
, &low
, &high
);
1134 /* Check if the array bounds are undefined. */
1136 && ((low_bound
&& TYPE_ARRAY_LOWER_BOUND_IS_UNDEFINED (type
))
1137 || (high_bound
&& TYPE_ARRAY_UPPER_BOUND_IS_UNDEFINED (type
))))
1149 /* Assuming that TYPE is a discrete type and VAL is a valid integer
1150 representation of a value of this type, save the corresponding
1151 position number in POS.
1153 Its differs from VAL only in the case of enumeration types. In
1154 this case, the position number of the value of the first listed
1155 enumeration literal is zero; the position number of the value of
1156 each subsequent enumeration literal is one more than that of its
1157 predecessor in the list.
1159 Return 1 if the operation was successful. Return zero otherwise,
1160 in which case the value of POS is unmodified.
1164 discrete_position (struct type
*type
, LONGEST val
, LONGEST
*pos
)
1166 if (type
->code () == TYPE_CODE_RANGE
)
1167 type
= TYPE_TARGET_TYPE (type
);
1169 if (type
->code () == TYPE_CODE_ENUM
)
1173 for (i
= 0; i
< type
->num_fields (); i
+= 1)
1175 if (val
== TYPE_FIELD_ENUMVAL (type
, i
))
1181 /* Invalid enumeration value. */
1191 /* If the array TYPE has static bounds calculate and update its
1192 size, then return true. Otherwise return false and leave TYPE
1196 update_static_array_size (struct type
*type
)
1198 gdb_assert (type
->code () == TYPE_CODE_ARRAY
);
1200 struct type
*range_type
= type
->index_type ();
1202 if (type
->dyn_prop (DYN_PROP_BYTE_STRIDE
) == nullptr
1203 && has_static_range (range_type
->bounds ())
1204 && (!type_not_associated (type
)
1205 && !type_not_allocated (type
)))
1207 LONGEST low_bound
, high_bound
;
1209 struct type
*element_type
;
1211 /* If the array itself doesn't provide a stride value then take
1212 whatever stride the range provides. Don't update BIT_STRIDE as
1213 we don't want to place the stride value from the range into this
1214 arrays bit size field. */
1215 stride
= TYPE_FIELD_BITSIZE (type
, 0);
1217 stride
= TYPE_BIT_STRIDE (range_type
);
1219 if (get_discrete_bounds (range_type
, &low_bound
, &high_bound
) < 0)
1220 low_bound
= high_bound
= 0;
1221 element_type
= check_typedef (TYPE_TARGET_TYPE (type
));
1222 /* Be careful when setting the array length. Ada arrays can be
1223 empty arrays with the high_bound being smaller than the low_bound.
1224 In such cases, the array length should be zero. */
1225 if (high_bound
< low_bound
)
1226 TYPE_LENGTH (type
) = 0;
1227 else if (stride
!= 0)
1229 /* Ensure that the type length is always positive, even in the
1230 case where (for example in Fortran) we have a negative
1231 stride. It is possible to have a single element array with a
1232 negative stride in Fortran (this doesn't mean anything
1233 special, it's still just a single element array) so do
1234 consider that case when touching this code. */
1235 LONGEST element_count
= std::abs (high_bound
- low_bound
+ 1);
1237 = ((std::abs (stride
) * element_count
) + 7) / 8;
1240 TYPE_LENGTH (type
) =
1241 TYPE_LENGTH (element_type
) * (high_bound
- low_bound
+ 1);
1249 /* Create an array type using either a blank type supplied in
1250 RESULT_TYPE, or creating a new type, inheriting the objfile from
1253 Elements will be of type ELEMENT_TYPE, the indices will be of type
1256 BYTE_STRIDE_PROP, when not NULL, provides the array's byte stride.
1257 This byte stride property is added to the resulting array type
1258 as a DYN_PROP_BYTE_STRIDE. As a consequence, the BYTE_STRIDE_PROP
1259 argument can only be used to create types that are objfile-owned
1260 (see add_dyn_prop), meaning that either this function must be called
1261 with an objfile-owned RESULT_TYPE, or an objfile-owned RANGE_TYPE.
1263 BIT_STRIDE is taken into account only when BYTE_STRIDE_PROP is NULL.
1264 If BIT_STRIDE is not zero, build a packed array type whose element
1265 size is BIT_STRIDE. Otherwise, ignore this parameter.
1267 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
1268 sure it is TYPE_CODE_UNDEF before we bash it into an array
1272 create_array_type_with_stride (struct type
*result_type
,
1273 struct type
*element_type
,
1274 struct type
*range_type
,
1275 struct dynamic_prop
*byte_stride_prop
,
1276 unsigned int bit_stride
)
1278 if (byte_stride_prop
!= NULL
1279 && byte_stride_prop
->kind
== PROP_CONST
)
1281 /* The byte stride is actually not dynamic. Pretend we were
1282 called with bit_stride set instead of byte_stride_prop.
1283 This will give us the same result type, while avoiding
1284 the need to handle this as a special case. */
1285 bit_stride
= byte_stride_prop
->data
.const_val
* 8;
1286 byte_stride_prop
= NULL
;
1289 if (result_type
== NULL
)
1290 result_type
= alloc_type_copy (range_type
);
1292 result_type
->set_code (TYPE_CODE_ARRAY
);
1293 TYPE_TARGET_TYPE (result_type
) = element_type
;
1295 result_type
->set_num_fields (1);
1296 result_type
->set_fields
1297 ((struct field
*) TYPE_ZALLOC (result_type
, sizeof (struct field
)));
1298 result_type
->set_index_type (range_type
);
1299 if (byte_stride_prop
!= NULL
)
1300 result_type
->add_dyn_prop (DYN_PROP_BYTE_STRIDE
, *byte_stride_prop
);
1301 else if (bit_stride
> 0)
1302 TYPE_FIELD_BITSIZE (result_type
, 0) = bit_stride
;
1304 if (!update_static_array_size (result_type
))
1306 /* This type is dynamic and its length needs to be computed
1307 on demand. In the meantime, avoid leaving the TYPE_LENGTH
1308 undefined by setting it to zero. Although we are not expected
1309 to trust TYPE_LENGTH in this case, setting the size to zero
1310 allows us to avoid allocating objects of random sizes in case
1311 we accidently do. */
1312 TYPE_LENGTH (result_type
) = 0;
1315 /* TYPE_TARGET_STUB will take care of zero length arrays. */
1316 if (TYPE_LENGTH (result_type
) == 0)
1317 TYPE_TARGET_STUB (result_type
) = 1;
1322 /* Same as create_array_type_with_stride but with no bit_stride
1323 (BIT_STRIDE = 0), thus building an unpacked array. */
1326 create_array_type (struct type
*result_type
,
1327 struct type
*element_type
,
1328 struct type
*range_type
)
1330 return create_array_type_with_stride (result_type
, element_type
,
1331 range_type
, NULL
, 0);
1335 lookup_array_range_type (struct type
*element_type
,
1336 LONGEST low_bound
, LONGEST high_bound
)
1338 struct type
*index_type
;
1339 struct type
*range_type
;
1341 if (TYPE_OBJFILE_OWNED (element_type
))
1342 index_type
= objfile_type (TYPE_OWNER (element_type
).objfile
)->builtin_int
;
1344 index_type
= builtin_type (get_type_arch (element_type
))->builtin_int
;
1345 range_type
= create_static_range_type (NULL
, index_type
,
1346 low_bound
, high_bound
);
1348 return create_array_type (NULL
, element_type
, range_type
);
1351 /* Create a string type using either a blank type supplied in
1352 RESULT_TYPE, or creating a new type. String types are similar
1353 enough to array of char types that we can use create_array_type to
1354 build the basic type and then bash it into a string type.
1356 For fixed length strings, the range type contains 0 as the lower
1357 bound and the length of the string minus one as the upper bound.
1359 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
1360 sure it is TYPE_CODE_UNDEF before we bash it into a string
1364 create_string_type (struct type
*result_type
,
1365 struct type
*string_char_type
,
1366 struct type
*range_type
)
1368 result_type
= create_array_type (result_type
,
1371 result_type
->set_code (TYPE_CODE_STRING
);
1376 lookup_string_range_type (struct type
*string_char_type
,
1377 LONGEST low_bound
, LONGEST high_bound
)
1379 struct type
*result_type
;
1381 result_type
= lookup_array_range_type (string_char_type
,
1382 low_bound
, high_bound
);
1383 result_type
->set_code (TYPE_CODE_STRING
);
1388 create_set_type (struct type
*result_type
, struct type
*domain_type
)
1390 if (result_type
== NULL
)
1391 result_type
= alloc_type_copy (domain_type
);
1393 result_type
->set_code (TYPE_CODE_SET
);
1394 result_type
->set_num_fields (1);
1395 result_type
->set_fields
1396 ((struct field
*) TYPE_ZALLOC (result_type
, sizeof (struct field
)));
1398 if (!TYPE_STUB (domain_type
))
1400 LONGEST low_bound
, high_bound
, bit_length
;
1402 if (get_discrete_bounds (domain_type
, &low_bound
, &high_bound
) < 0)
1403 low_bound
= high_bound
= 0;
1404 bit_length
= high_bound
- low_bound
+ 1;
1405 TYPE_LENGTH (result_type
)
1406 = (bit_length
+ TARGET_CHAR_BIT
- 1) / TARGET_CHAR_BIT
;
1408 TYPE_UNSIGNED (result_type
) = 1;
1410 result_type
->field (0).set_type (domain_type
);
1415 /* Convert ARRAY_TYPE to a vector type. This may modify ARRAY_TYPE
1416 and any array types nested inside it. */
1419 make_vector_type (struct type
*array_type
)
1421 struct type
*inner_array
, *elt_type
;
1424 /* Find the innermost array type, in case the array is
1425 multi-dimensional. */
1426 inner_array
= array_type
;
1427 while (TYPE_TARGET_TYPE (inner_array
)->code () == TYPE_CODE_ARRAY
)
1428 inner_array
= TYPE_TARGET_TYPE (inner_array
);
1430 elt_type
= TYPE_TARGET_TYPE (inner_array
);
1431 if (elt_type
->code () == TYPE_CODE_INT
)
1433 flags
= TYPE_INSTANCE_FLAGS (elt_type
) | TYPE_INSTANCE_FLAG_NOTTEXT
;
1434 elt_type
= make_qualified_type (elt_type
, flags
, NULL
);
1435 TYPE_TARGET_TYPE (inner_array
) = elt_type
;
1438 TYPE_VECTOR (array_type
) = 1;
1442 init_vector_type (struct type
*elt_type
, int n
)
1444 struct type
*array_type
;
1446 array_type
= lookup_array_range_type (elt_type
, 0, n
- 1);
1447 make_vector_type (array_type
);
1451 /* Internal routine called by TYPE_SELF_TYPE to return the type that TYPE
1452 belongs to. In c++ this is the class of "this", but TYPE_THIS_TYPE is too
1453 confusing. "self" is a common enough replacement for "this".
1454 TYPE must be one of TYPE_CODE_METHODPTR, TYPE_CODE_MEMBERPTR, or
1455 TYPE_CODE_METHOD. */
1458 internal_type_self_type (struct type
*type
)
1460 switch (type
->code ())
1462 case TYPE_CODE_METHODPTR
:
1463 case TYPE_CODE_MEMBERPTR
:
1464 if (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_NONE
)
1466 gdb_assert (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_SELF_TYPE
);
1467 return TYPE_MAIN_TYPE (type
)->type_specific
.self_type
;
1468 case TYPE_CODE_METHOD
:
1469 if (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_NONE
)
1471 gdb_assert (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_FUNC
);
1472 return TYPE_MAIN_TYPE (type
)->type_specific
.func_stuff
->self_type
;
1474 gdb_assert_not_reached ("bad type");
1478 /* Set the type of the class that TYPE belongs to.
1479 In c++ this is the class of "this".
1480 TYPE must be one of TYPE_CODE_METHODPTR, TYPE_CODE_MEMBERPTR, or
1481 TYPE_CODE_METHOD. */
1484 set_type_self_type (struct type
*type
, struct type
*self_type
)
1486 switch (type
->code ())
1488 case TYPE_CODE_METHODPTR
:
1489 case TYPE_CODE_MEMBERPTR
:
1490 if (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_NONE
)
1491 TYPE_SPECIFIC_FIELD (type
) = TYPE_SPECIFIC_SELF_TYPE
;
1492 gdb_assert (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_SELF_TYPE
);
1493 TYPE_MAIN_TYPE (type
)->type_specific
.self_type
= self_type
;
1495 case TYPE_CODE_METHOD
:
1496 if (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_NONE
)
1497 INIT_FUNC_SPECIFIC (type
);
1498 gdb_assert (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_FUNC
);
1499 TYPE_MAIN_TYPE (type
)->type_specific
.func_stuff
->self_type
= self_type
;
1502 gdb_assert_not_reached ("bad type");
1506 /* Smash TYPE to be a type of pointers to members of SELF_TYPE with type
1507 TO_TYPE. A member pointer is a wierd thing -- it amounts to a
1508 typed offset into a struct, e.g. "an int at offset 8". A MEMBER
1509 TYPE doesn't include the offset (that's the value of the MEMBER
1510 itself), but does include the structure type into which it points
1513 When "smashing" the type, we preserve the objfile that the old type
1514 pointed to, since we aren't changing where the type is actually
1518 smash_to_memberptr_type (struct type
*type
, struct type
*self_type
,
1519 struct type
*to_type
)
1522 type
->set_code (TYPE_CODE_MEMBERPTR
);
1523 TYPE_TARGET_TYPE (type
) = to_type
;
1524 set_type_self_type (type
, self_type
);
1525 /* Assume that a data member pointer is the same size as a normal
1528 = gdbarch_ptr_bit (get_type_arch (to_type
)) / TARGET_CHAR_BIT
;
1531 /* Smash TYPE to be a type of pointer to methods type TO_TYPE.
1533 When "smashing" the type, we preserve the objfile that the old type
1534 pointed to, since we aren't changing where the type is actually
1538 smash_to_methodptr_type (struct type
*type
, struct type
*to_type
)
1541 type
->set_code (TYPE_CODE_METHODPTR
);
1542 TYPE_TARGET_TYPE (type
) = to_type
;
1543 set_type_self_type (type
, TYPE_SELF_TYPE (to_type
));
1544 TYPE_LENGTH (type
) = cplus_method_ptr_size (to_type
);
1547 /* Smash TYPE to be a type of method of SELF_TYPE with type TO_TYPE.
1548 METHOD just means `function that gets an extra "this" argument'.
1550 When "smashing" the type, we preserve the objfile that the old type
1551 pointed to, since we aren't changing where the type is actually
1555 smash_to_method_type (struct type
*type
, struct type
*self_type
,
1556 struct type
*to_type
, struct field
*args
,
1557 int nargs
, int varargs
)
1560 type
->set_code (TYPE_CODE_METHOD
);
1561 TYPE_TARGET_TYPE (type
) = to_type
;
1562 set_type_self_type (type
, self_type
);
1563 type
->set_fields (args
);
1564 type
->set_num_fields (nargs
);
1566 TYPE_VARARGS (type
) = 1;
1567 TYPE_LENGTH (type
) = 1; /* In practice, this is never needed. */
1570 /* A wrapper of TYPE_NAME which calls error if the type is anonymous.
1571 Since GCC PR debug/47510 DWARF provides associated information to detect the
1572 anonymous class linkage name from its typedef.
1574 Parameter TYPE should not yet have CHECK_TYPEDEF applied, this function will
1578 type_name_or_error (struct type
*type
)
1580 struct type
*saved_type
= type
;
1582 struct objfile
*objfile
;
1584 type
= check_typedef (type
);
1586 name
= type
->name ();
1590 name
= saved_type
->name ();
1591 objfile
= TYPE_OBJFILE (saved_type
);
1592 error (_("Invalid anonymous type %s [in module %s], GCC PR debug/47510 bug?"),
1593 name
? name
: "<anonymous>",
1594 objfile
? objfile_name (objfile
) : "<arch>");
1597 /* Lookup a typedef or primitive type named NAME, visible in lexical
1598 block BLOCK. If NOERR is nonzero, return zero if NAME is not
1599 suitably defined. */
1602 lookup_typename (const struct language_defn
*language
,
1604 const struct block
*block
, int noerr
)
1608 sym
= lookup_symbol_in_language (name
, block
, VAR_DOMAIN
,
1609 language
->la_language
, NULL
).symbol
;
1610 if (sym
!= NULL
&& SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
1611 return SYMBOL_TYPE (sym
);
1615 error (_("No type named %s."), name
);
1619 lookup_unsigned_typename (const struct language_defn
*language
,
1622 char *uns
= (char *) alloca (strlen (name
) + 10);
1624 strcpy (uns
, "unsigned ");
1625 strcpy (uns
+ 9, name
);
1626 return lookup_typename (language
, uns
, NULL
, 0);
1630 lookup_signed_typename (const struct language_defn
*language
, const char *name
)
1633 char *uns
= (char *) alloca (strlen (name
) + 8);
1635 strcpy (uns
, "signed ");
1636 strcpy (uns
+ 7, name
);
1637 t
= lookup_typename (language
, uns
, NULL
, 1);
1638 /* If we don't find "signed FOO" just try again with plain "FOO". */
1641 return lookup_typename (language
, name
, NULL
, 0);
1644 /* Lookup a structure type named "struct NAME",
1645 visible in lexical block BLOCK. */
1648 lookup_struct (const char *name
, const struct block
*block
)
1652 sym
= lookup_symbol (name
, block
, STRUCT_DOMAIN
, 0).symbol
;
1656 error (_("No struct type named %s."), name
);
1658 if (SYMBOL_TYPE (sym
)->code () != TYPE_CODE_STRUCT
)
1660 error (_("This context has class, union or enum %s, not a struct."),
1663 return (SYMBOL_TYPE (sym
));
1666 /* Lookup a union type named "union NAME",
1667 visible in lexical block BLOCK. */
1670 lookup_union (const char *name
, const struct block
*block
)
1675 sym
= lookup_symbol (name
, block
, STRUCT_DOMAIN
, 0).symbol
;
1678 error (_("No union type named %s."), name
);
1680 t
= SYMBOL_TYPE (sym
);
1682 if (t
->code () == TYPE_CODE_UNION
)
1685 /* If we get here, it's not a union. */
1686 error (_("This context has class, struct or enum %s, not a union."),
1690 /* Lookup an enum type named "enum NAME",
1691 visible in lexical block BLOCK. */
1694 lookup_enum (const char *name
, const struct block
*block
)
1698 sym
= lookup_symbol (name
, block
, STRUCT_DOMAIN
, 0).symbol
;
1701 error (_("No enum type named %s."), name
);
1703 if (SYMBOL_TYPE (sym
)->code () != TYPE_CODE_ENUM
)
1705 error (_("This context has class, struct or union %s, not an enum."),
1708 return (SYMBOL_TYPE (sym
));
1711 /* Lookup a template type named "template NAME<TYPE>",
1712 visible in lexical block BLOCK. */
1715 lookup_template_type (const char *name
, struct type
*type
,
1716 const struct block
*block
)
1719 char *nam
= (char *)
1720 alloca (strlen (name
) + strlen (type
->name ()) + 4);
1724 strcat (nam
, type
->name ());
1725 strcat (nam
, " >"); /* FIXME, extra space still introduced in gcc? */
1727 sym
= lookup_symbol (nam
, block
, VAR_DOMAIN
, 0).symbol
;
1731 error (_("No template type named %s."), name
);
1733 if (SYMBOL_TYPE (sym
)->code () != TYPE_CODE_STRUCT
)
1735 error (_("This context has class, union or enum %s, not a struct."),
1738 return (SYMBOL_TYPE (sym
));
1741 /* See gdbtypes.h. */
1744 lookup_struct_elt (struct type
*type
, const char *name
, int noerr
)
1750 type
= check_typedef (type
);
1751 if (type
->code () != TYPE_CODE_PTR
1752 && type
->code () != TYPE_CODE_REF
)
1754 type
= TYPE_TARGET_TYPE (type
);
1757 if (type
->code () != TYPE_CODE_STRUCT
1758 && type
->code () != TYPE_CODE_UNION
)
1760 std::string type_name
= type_to_string (type
);
1761 error (_("Type %s is not a structure or union type."),
1762 type_name
.c_str ());
1765 for (i
= type
->num_fields () - 1; i
>= TYPE_N_BASECLASSES (type
); i
--)
1767 const char *t_field_name
= TYPE_FIELD_NAME (type
, i
);
1769 if (t_field_name
&& (strcmp_iw (t_field_name
, name
) == 0))
1771 return {&type
->field (i
), TYPE_FIELD_BITPOS (type
, i
)};
1773 else if (!t_field_name
|| *t_field_name
== '\0')
1776 = lookup_struct_elt (type
->field (i
).type (), name
, 1);
1777 if (elt
.field
!= NULL
)
1779 elt
.offset
+= TYPE_FIELD_BITPOS (type
, i
);
1785 /* OK, it's not in this class. Recursively check the baseclasses. */
1786 for (i
= TYPE_N_BASECLASSES (type
) - 1; i
>= 0; i
--)
1788 struct_elt elt
= lookup_struct_elt (TYPE_BASECLASS (type
, i
), name
, 1);
1789 if (elt
.field
!= NULL
)
1794 return {nullptr, 0};
1796 std::string type_name
= type_to_string (type
);
1797 error (_("Type %s has no component named %s."), type_name
.c_str (), name
);
1800 /* See gdbtypes.h. */
1803 lookup_struct_elt_type (struct type
*type
, const char *name
, int noerr
)
1805 struct_elt elt
= lookup_struct_elt (type
, name
, noerr
);
1806 if (elt
.field
!= NULL
)
1807 return elt
.field
->type ();
1812 /* Store in *MAX the largest number representable by unsigned integer type
1816 get_unsigned_type_max (struct type
*type
, ULONGEST
*max
)
1820 type
= check_typedef (type
);
1821 gdb_assert (type
->code () == TYPE_CODE_INT
&& TYPE_UNSIGNED (type
));
1822 gdb_assert (TYPE_LENGTH (type
) <= sizeof (ULONGEST
));
1824 /* Written this way to avoid overflow. */
1825 n
= TYPE_LENGTH (type
) * TARGET_CHAR_BIT
;
1826 *max
= ((((ULONGEST
) 1 << (n
- 1)) - 1) << 1) | 1;
1829 /* Store in *MIN, *MAX the smallest and largest numbers representable by
1830 signed integer type TYPE. */
1833 get_signed_type_minmax (struct type
*type
, LONGEST
*min
, LONGEST
*max
)
1837 type
= check_typedef (type
);
1838 gdb_assert (type
->code () == TYPE_CODE_INT
&& !TYPE_UNSIGNED (type
));
1839 gdb_assert (TYPE_LENGTH (type
) <= sizeof (LONGEST
));
1841 n
= TYPE_LENGTH (type
) * TARGET_CHAR_BIT
;
1842 *min
= -((ULONGEST
) 1 << (n
- 1));
1843 *max
= ((ULONGEST
) 1 << (n
- 1)) - 1;
1846 /* Internal routine called by TYPE_VPTR_FIELDNO to return the value of
1847 cplus_stuff.vptr_fieldno.
1849 cplus_stuff is initialized to cplus_struct_default which does not
1850 set vptr_fieldno to -1 for portability reasons (IWBN to use C99
1851 designated initializers). We cope with that here. */
1854 internal_type_vptr_fieldno (struct type
*type
)
1856 type
= check_typedef (type
);
1857 gdb_assert (type
->code () == TYPE_CODE_STRUCT
1858 || type
->code () == TYPE_CODE_UNION
);
1859 if (!HAVE_CPLUS_STRUCT (type
))
1861 return TYPE_RAW_CPLUS_SPECIFIC (type
)->vptr_fieldno
;
1864 /* Set the value of cplus_stuff.vptr_fieldno. */
1867 set_type_vptr_fieldno (struct type
*type
, int fieldno
)
1869 type
= check_typedef (type
);
1870 gdb_assert (type
->code () == TYPE_CODE_STRUCT
1871 || type
->code () == TYPE_CODE_UNION
);
1872 if (!HAVE_CPLUS_STRUCT (type
))
1873 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
1874 TYPE_RAW_CPLUS_SPECIFIC (type
)->vptr_fieldno
= fieldno
;
1877 /* Internal routine called by TYPE_VPTR_BASETYPE to return the value of
1878 cplus_stuff.vptr_basetype. */
1881 internal_type_vptr_basetype (struct type
*type
)
1883 type
= check_typedef (type
);
1884 gdb_assert (type
->code () == TYPE_CODE_STRUCT
1885 || type
->code () == TYPE_CODE_UNION
);
1886 gdb_assert (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_CPLUS_STUFF
);
1887 return TYPE_RAW_CPLUS_SPECIFIC (type
)->vptr_basetype
;
1890 /* Set the value of cplus_stuff.vptr_basetype. */
1893 set_type_vptr_basetype (struct type
*type
, struct type
*basetype
)
1895 type
= check_typedef (type
);
1896 gdb_assert (type
->code () == TYPE_CODE_STRUCT
1897 || type
->code () == TYPE_CODE_UNION
);
1898 if (!HAVE_CPLUS_STRUCT (type
))
1899 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
1900 TYPE_RAW_CPLUS_SPECIFIC (type
)->vptr_basetype
= basetype
;
1903 /* Lookup the vptr basetype/fieldno values for TYPE.
1904 If found store vptr_basetype in *BASETYPEP if non-NULL, and return
1905 vptr_fieldno. Also, if found and basetype is from the same objfile,
1907 If not found, return -1 and ignore BASETYPEP.
1908 Callers should be aware that in some cases (for example,
1909 the type or one of its baseclasses is a stub type and we are
1910 debugging a .o file, or the compiler uses DWARF-2 and is not GCC),
1911 this function will not be able to find the
1912 virtual function table pointer, and vptr_fieldno will remain -1 and
1913 vptr_basetype will remain NULL or incomplete. */
1916 get_vptr_fieldno (struct type
*type
, struct type
**basetypep
)
1918 type
= check_typedef (type
);
1920 if (TYPE_VPTR_FIELDNO (type
) < 0)
1924 /* We must start at zero in case the first (and only) baseclass
1925 is virtual (and hence we cannot share the table pointer). */
1926 for (i
= 0; i
< TYPE_N_BASECLASSES (type
); i
++)
1928 struct type
*baseclass
= check_typedef (TYPE_BASECLASS (type
, i
));
1930 struct type
*basetype
;
1932 fieldno
= get_vptr_fieldno (baseclass
, &basetype
);
1935 /* If the type comes from a different objfile we can't cache
1936 it, it may have a different lifetime. PR 2384 */
1937 if (TYPE_OBJFILE (type
) == TYPE_OBJFILE (basetype
))
1939 set_type_vptr_fieldno (type
, fieldno
);
1940 set_type_vptr_basetype (type
, basetype
);
1943 *basetypep
= basetype
;
1954 *basetypep
= TYPE_VPTR_BASETYPE (type
);
1955 return TYPE_VPTR_FIELDNO (type
);
1960 stub_noname_complaint (void)
1962 complaint (_("stub type has NULL name"));
1965 /* Return nonzero if TYPE has a DYN_PROP_BYTE_STRIDE dynamic property
1966 attached to it, and that property has a non-constant value. */
1969 array_type_has_dynamic_stride (struct type
*type
)
1971 struct dynamic_prop
*prop
= type
->dyn_prop (DYN_PROP_BYTE_STRIDE
);
1973 return (prop
!= NULL
&& prop
->kind
!= PROP_CONST
);
1976 /* Worker for is_dynamic_type. */
1979 is_dynamic_type_internal (struct type
*type
, int top_level
)
1981 type
= check_typedef (type
);
1983 /* We only want to recognize references at the outermost level. */
1984 if (top_level
&& type
->code () == TYPE_CODE_REF
)
1985 type
= check_typedef (TYPE_TARGET_TYPE (type
));
1987 /* Types that have a dynamic TYPE_DATA_LOCATION are considered
1988 dynamic, even if the type itself is statically defined.
1989 From a user's point of view, this may appear counter-intuitive;
1990 but it makes sense in this context, because the point is to determine
1991 whether any part of the type needs to be resolved before it can
1993 if (TYPE_DATA_LOCATION (type
) != NULL
1994 && (TYPE_DATA_LOCATION_KIND (type
) == PROP_LOCEXPR
1995 || TYPE_DATA_LOCATION_KIND (type
) == PROP_LOCLIST
))
1998 if (TYPE_ASSOCIATED_PROP (type
))
2001 if (TYPE_ALLOCATED_PROP (type
))
2004 struct dynamic_prop
*prop
= type
->dyn_prop (DYN_PROP_VARIANT_PARTS
);
2005 if (prop
!= nullptr && prop
->kind
!= PROP_TYPE
)
2008 if (TYPE_HAS_DYNAMIC_LENGTH (type
))
2011 switch (type
->code ())
2013 case TYPE_CODE_RANGE
:
2015 /* A range type is obviously dynamic if it has at least one
2016 dynamic bound. But also consider the range type to be
2017 dynamic when its subtype is dynamic, even if the bounds
2018 of the range type are static. It allows us to assume that
2019 the subtype of a static range type is also static. */
2020 return (!has_static_range (type
->bounds ())
2021 || is_dynamic_type_internal (TYPE_TARGET_TYPE (type
), 0));
2024 case TYPE_CODE_STRING
:
2025 /* Strings are very much like an array of characters, and can be
2026 treated as one here. */
2027 case TYPE_CODE_ARRAY
:
2029 gdb_assert (type
->num_fields () == 1);
2031 /* The array is dynamic if either the bounds are dynamic... */
2032 if (is_dynamic_type_internal (type
->index_type (), 0))
2034 /* ... or the elements it contains have a dynamic contents... */
2035 if (is_dynamic_type_internal (TYPE_TARGET_TYPE (type
), 0))
2037 /* ... or if it has a dynamic stride... */
2038 if (array_type_has_dynamic_stride (type
))
2043 case TYPE_CODE_STRUCT
:
2044 case TYPE_CODE_UNION
:
2048 bool is_cplus
= HAVE_CPLUS_STRUCT (type
);
2050 for (i
= 0; i
< type
->num_fields (); ++i
)
2052 /* Static fields can be ignored here. */
2053 if (field_is_static (&type
->field (i
)))
2055 /* If the field has dynamic type, then so does TYPE. */
2056 if (is_dynamic_type_internal (type
->field (i
).type (), 0))
2058 /* If the field is at a fixed offset, then it is not
2060 if (TYPE_FIELD_LOC_KIND (type
, i
) != FIELD_LOC_KIND_DWARF_BLOCK
)
2062 /* Do not consider C++ virtual base types to be dynamic
2063 due to the field's offset being dynamic; these are
2064 handled via other means. */
2065 if (is_cplus
&& BASETYPE_VIA_VIRTUAL (type
, i
))
2076 /* See gdbtypes.h. */
2079 is_dynamic_type (struct type
*type
)
2081 return is_dynamic_type_internal (type
, 1);
2084 static struct type
*resolve_dynamic_type_internal
2085 (struct type
*type
, struct property_addr_info
*addr_stack
, int top_level
);
2087 /* Given a dynamic range type (dyn_range_type) and a stack of
2088 struct property_addr_info elements, return a static version
2091 static struct type
*
2092 resolve_dynamic_range (struct type
*dyn_range_type
,
2093 struct property_addr_info
*addr_stack
)
2096 struct type
*static_range_type
, *static_target_type
;
2097 struct dynamic_prop low_bound
, high_bound
, stride
;
2099 gdb_assert (dyn_range_type
->code () == TYPE_CODE_RANGE
);
2101 const struct dynamic_prop
*prop
= &dyn_range_type
->bounds ()->low
;
2102 if (dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2104 low_bound
.kind
= PROP_CONST
;
2105 low_bound
.data
.const_val
= value
;
2109 low_bound
.kind
= PROP_UNDEFINED
;
2110 low_bound
.data
.const_val
= 0;
2113 prop
= &dyn_range_type
->bounds ()->high
;
2114 if (dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2116 high_bound
.kind
= PROP_CONST
;
2117 high_bound
.data
.const_val
= value
;
2119 if (dyn_range_type
->bounds ()->flag_upper_bound_is_count
)
2120 high_bound
.data
.const_val
2121 = low_bound
.data
.const_val
+ high_bound
.data
.const_val
- 1;
2125 high_bound
.kind
= PROP_UNDEFINED
;
2126 high_bound
.data
.const_val
= 0;
2129 bool byte_stride_p
= dyn_range_type
->bounds ()->flag_is_byte_stride
;
2130 prop
= &dyn_range_type
->bounds ()->stride
;
2131 if (dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2133 stride
.kind
= PROP_CONST
;
2134 stride
.data
.const_val
= value
;
2136 /* If we have a bit stride that is not an exact number of bytes then
2137 I really don't think this is going to work with current GDB, the
2138 array indexing code in GDB seems to be pretty heavily tied to byte
2139 offsets right now. Assuming 8 bits in a byte. */
2140 struct gdbarch
*gdbarch
= get_type_arch (dyn_range_type
);
2141 int unit_size
= gdbarch_addressable_memory_unit_size (gdbarch
);
2142 if (!byte_stride_p
&& (value
% (unit_size
* 8)) != 0)
2143 error (_("bit strides that are not a multiple of the byte size "
2144 "are currently not supported"));
2148 stride
.kind
= PROP_UNDEFINED
;
2149 stride
.data
.const_val
= 0;
2150 byte_stride_p
= true;
2154 = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (dyn_range_type
),
2156 LONGEST bias
= dyn_range_type
->bounds ()->bias
;
2157 static_range_type
= create_range_type_with_stride
2158 (copy_type (dyn_range_type
), static_target_type
,
2159 &low_bound
, &high_bound
, bias
, &stride
, byte_stride_p
);
2160 static_range_type
->bounds ()->flag_bound_evaluated
= 1;
2161 return static_range_type
;
2164 /* Resolves dynamic bound values of an array or string type TYPE to static
2165 ones. ADDR_STACK is a stack of struct property_addr_info to be used if
2166 needed during the dynamic resolution. */
2168 static struct type
*
2169 resolve_dynamic_array_or_string (struct type
*type
,
2170 struct property_addr_info
*addr_stack
)
2173 struct type
*elt_type
;
2174 struct type
*range_type
;
2175 struct type
*ary_dim
;
2176 struct dynamic_prop
*prop
;
2177 unsigned int bit_stride
= 0;
2179 /* For dynamic type resolution strings can be treated like arrays of
2181 gdb_assert (type
->code () == TYPE_CODE_ARRAY
2182 || type
->code () == TYPE_CODE_STRING
);
2184 type
= copy_type (type
);
2187 range_type
= check_typedef (elt_type
->index_type ());
2188 range_type
= resolve_dynamic_range (range_type
, addr_stack
);
2190 /* Resolve allocated/associated here before creating a new array type, which
2191 will update the length of the array accordingly. */
2192 prop
= TYPE_ALLOCATED_PROP (type
);
2193 if (prop
!= NULL
&& dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2195 TYPE_DYN_PROP_ADDR (prop
) = value
;
2196 TYPE_DYN_PROP_KIND (prop
) = PROP_CONST
;
2198 prop
= TYPE_ASSOCIATED_PROP (type
);
2199 if (prop
!= NULL
&& dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2201 TYPE_DYN_PROP_ADDR (prop
) = value
;
2202 TYPE_DYN_PROP_KIND (prop
) = PROP_CONST
;
2205 ary_dim
= check_typedef (TYPE_TARGET_TYPE (elt_type
));
2207 if (ary_dim
!= NULL
&& ary_dim
->code () == TYPE_CODE_ARRAY
)
2208 elt_type
= resolve_dynamic_array_or_string (ary_dim
, addr_stack
);
2210 elt_type
= TYPE_TARGET_TYPE (type
);
2212 prop
= type
->dyn_prop (DYN_PROP_BYTE_STRIDE
);
2215 if (dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2217 type
->remove_dyn_prop (DYN_PROP_BYTE_STRIDE
);
2218 bit_stride
= (unsigned int) (value
* 8);
2222 /* Could be a bug in our code, but it could also happen
2223 if the DWARF info is not correct. Issue a warning,
2224 and assume no byte/bit stride (leave bit_stride = 0). */
2225 warning (_("cannot determine array stride for type %s"),
2226 type
->name () ? type
->name () : "<no name>");
2230 bit_stride
= TYPE_FIELD_BITSIZE (type
, 0);
2232 return create_array_type_with_stride (type
, elt_type
, range_type
, NULL
,
2236 /* Resolve dynamic bounds of members of the union TYPE to static
2237 bounds. ADDR_STACK is a stack of struct property_addr_info
2238 to be used if needed during the dynamic resolution. */
2240 static struct type
*
2241 resolve_dynamic_union (struct type
*type
,
2242 struct property_addr_info
*addr_stack
)
2244 struct type
*resolved_type
;
2246 unsigned int max_len
= 0;
2248 gdb_assert (type
->code () == TYPE_CODE_UNION
);
2250 resolved_type
= copy_type (type
);
2251 resolved_type
->set_fields
2253 TYPE_ALLOC (resolved_type
,
2254 resolved_type
->num_fields () * sizeof (struct field
)));
2255 memcpy (resolved_type
->fields (),
2257 resolved_type
->num_fields () * sizeof (struct field
));
2258 for (i
= 0; i
< resolved_type
->num_fields (); ++i
)
2262 if (field_is_static (&type
->field (i
)))
2265 t
= resolve_dynamic_type_internal (resolved_type
->field (i
).type (),
2267 resolved_type
->field (i
).set_type (t
);
2269 struct type
*real_type
= check_typedef (t
);
2270 if (TYPE_LENGTH (real_type
) > max_len
)
2271 max_len
= TYPE_LENGTH (real_type
);
2274 TYPE_LENGTH (resolved_type
) = max_len
;
2275 return resolved_type
;
2278 /* See gdbtypes.h. */
2281 variant::matches (ULONGEST value
, bool is_unsigned
) const
2283 for (const discriminant_range
&range
: discriminants
)
2284 if (range
.contains (value
, is_unsigned
))
2290 compute_variant_fields_inner (struct type
*type
,
2291 struct property_addr_info
*addr_stack
,
2292 const variant_part
&part
,
2293 std::vector
<bool> &flags
);
2295 /* A helper function to determine which variant fields will be active.
2296 This handles both the variant's direct fields, and any variant
2297 parts embedded in this variant. TYPE is the type we're examining.
2298 ADDR_STACK holds information about the concrete object. VARIANT is
2299 the current variant to be handled. FLAGS is where the results are
2300 stored -- this function sets the Nth element in FLAGS if the
2301 corresponding field is enabled. ENABLED is whether this variant is
2305 compute_variant_fields_recurse (struct type
*type
,
2306 struct property_addr_info
*addr_stack
,
2307 const variant
&variant
,
2308 std::vector
<bool> &flags
,
2311 for (int field
= variant
.first_field
; field
< variant
.last_field
; ++field
)
2312 flags
[field
] = enabled
;
2314 for (const variant_part
&new_part
: variant
.parts
)
2317 compute_variant_fields_inner (type
, addr_stack
, new_part
, flags
);
2320 for (const auto &sub_variant
: new_part
.variants
)
2321 compute_variant_fields_recurse (type
, addr_stack
, sub_variant
,
2327 /* A helper function to determine which variant fields will be active.
2328 This evaluates the discriminant, decides which variant (if any) is
2329 active, and then updates FLAGS to reflect which fields should be
2330 available. TYPE is the type we're examining. ADDR_STACK holds
2331 information about the concrete object. VARIANT is the current
2332 variant to be handled. FLAGS is where the results are stored --
2333 this function sets the Nth element in FLAGS if the corresponding
2334 field is enabled. */
2337 compute_variant_fields_inner (struct type
*type
,
2338 struct property_addr_info
*addr_stack
,
2339 const variant_part
&part
,
2340 std::vector
<bool> &flags
)
2342 /* Evaluate the discriminant. */
2343 gdb::optional
<ULONGEST
> discr_value
;
2344 if (part
.discriminant_index
!= -1)
2346 int idx
= part
.discriminant_index
;
2348 if (TYPE_FIELD_LOC_KIND (type
, idx
) != FIELD_LOC_KIND_BITPOS
)
2349 error (_("Cannot determine struct field location"
2350 " (invalid location kind)"));
2352 if (addr_stack
->valaddr
.data () != NULL
)
2353 discr_value
= unpack_field_as_long (type
, addr_stack
->valaddr
.data (),
2357 CORE_ADDR addr
= (addr_stack
->addr
2358 + (TYPE_FIELD_BITPOS (type
, idx
)
2359 / TARGET_CHAR_BIT
));
2361 LONGEST bitsize
= TYPE_FIELD_BITSIZE (type
, idx
);
2362 LONGEST size
= bitsize
/ 8;
2364 size
= TYPE_LENGTH (type
->field (idx
).type ());
2366 gdb_byte bits
[sizeof (ULONGEST
)];
2367 read_memory (addr
, bits
, size
);
2369 LONGEST bitpos
= (TYPE_FIELD_BITPOS (type
, idx
)
2372 discr_value
= unpack_bits_as_long (type
->field (idx
).type (),
2373 bits
, bitpos
, bitsize
);
2377 /* Go through each variant and see which applies. */
2378 const variant
*default_variant
= nullptr;
2379 const variant
*applied_variant
= nullptr;
2380 for (const auto &variant
: part
.variants
)
2382 if (variant
.is_default ())
2383 default_variant
= &variant
;
2384 else if (discr_value
.has_value ()
2385 && variant
.matches (*discr_value
, part
.is_unsigned
))
2387 applied_variant
= &variant
;
2391 if (applied_variant
== nullptr)
2392 applied_variant
= default_variant
;
2394 for (const auto &variant
: part
.variants
)
2395 compute_variant_fields_recurse (type
, addr_stack
, variant
,
2396 flags
, applied_variant
== &variant
);
2399 /* Determine which variant fields are available in TYPE. The enabled
2400 fields are stored in RESOLVED_TYPE. ADDR_STACK holds information
2401 about the concrete object. PARTS describes the top-level variant
2402 parts for this type. */
2405 compute_variant_fields (struct type
*type
,
2406 struct type
*resolved_type
,
2407 struct property_addr_info
*addr_stack
,
2408 const gdb::array_view
<variant_part
> &parts
)
2410 /* Assume all fields are included by default. */
2411 std::vector
<bool> flags (resolved_type
->num_fields (), true);
2413 /* Now disable fields based on the variants that control them. */
2414 for (const auto &part
: parts
)
2415 compute_variant_fields_inner (type
, addr_stack
, part
, flags
);
2417 resolved_type
->set_num_fields
2418 (std::count (flags
.begin (), flags
.end (), true));
2419 resolved_type
->set_fields
2421 TYPE_ALLOC (resolved_type
,
2422 resolved_type
->num_fields () * sizeof (struct field
)));
2425 for (int i
= 0; i
< type
->num_fields (); ++i
)
2430 resolved_type
->field (out
) = type
->field (i
);
2435 /* Resolve dynamic bounds of members of the struct TYPE to static
2436 bounds. ADDR_STACK is a stack of struct property_addr_info to
2437 be used if needed during the dynamic resolution. */
2439 static struct type
*
2440 resolve_dynamic_struct (struct type
*type
,
2441 struct property_addr_info
*addr_stack
)
2443 struct type
*resolved_type
;
2445 unsigned resolved_type_bit_length
= 0;
2447 gdb_assert (type
->code () == TYPE_CODE_STRUCT
);
2448 gdb_assert (type
->num_fields () > 0);
2450 resolved_type
= copy_type (type
);
2452 dynamic_prop
*variant_prop
= resolved_type
->dyn_prop (DYN_PROP_VARIANT_PARTS
);
2453 if (variant_prop
!= nullptr && variant_prop
->kind
== PROP_VARIANT_PARTS
)
2455 compute_variant_fields (type
, resolved_type
, addr_stack
,
2456 *variant_prop
->data
.variant_parts
);
2457 /* We want to leave the property attached, so that the Rust code
2458 can tell whether the type was originally an enum. */
2459 variant_prop
->kind
= PROP_TYPE
;
2460 variant_prop
->data
.original_type
= type
;
2464 resolved_type
->set_fields
2466 TYPE_ALLOC (resolved_type
,
2467 resolved_type
->num_fields () * sizeof (struct field
)));
2468 memcpy (resolved_type
->fields (),
2470 resolved_type
->num_fields () * sizeof (struct field
));
2473 for (i
= 0; i
< resolved_type
->num_fields (); ++i
)
2475 unsigned new_bit_length
;
2476 struct property_addr_info pinfo
;
2478 if (field_is_static (&resolved_type
->field (i
)))
2481 if (TYPE_FIELD_LOC_KIND (resolved_type
, i
) == FIELD_LOC_KIND_DWARF_BLOCK
)
2483 struct dwarf2_property_baton baton
;
2485 = lookup_pointer_type (resolved_type
->field (i
).type ());
2486 baton
.locexpr
= *TYPE_FIELD_DWARF_BLOCK (resolved_type
, i
);
2488 struct dynamic_prop prop
;
2489 prop
.kind
= PROP_LOCEXPR
;
2490 prop
.data
.baton
= &baton
;
2493 if (dwarf2_evaluate_property (&prop
, nullptr, addr_stack
, &addr
,
2495 SET_FIELD_BITPOS (resolved_type
->field (i
),
2496 TARGET_CHAR_BIT
* (addr
- addr_stack
->addr
));
2499 /* As we know this field is not a static field, the field's
2500 field_loc_kind should be FIELD_LOC_KIND_BITPOS. Verify
2501 this is the case, but only trigger a simple error rather
2502 than an internal error if that fails. While failing
2503 that verification indicates a bug in our code, the error
2504 is not severe enough to suggest to the user he stops
2505 his debugging session because of it. */
2506 if (TYPE_FIELD_LOC_KIND (resolved_type
, i
) != FIELD_LOC_KIND_BITPOS
)
2507 error (_("Cannot determine struct field location"
2508 " (invalid location kind)"));
2510 pinfo
.type
= check_typedef (resolved_type
->field (i
).type ());
2511 pinfo
.valaddr
= addr_stack
->valaddr
;
2514 + (TYPE_FIELD_BITPOS (resolved_type
, i
) / TARGET_CHAR_BIT
));
2515 pinfo
.next
= addr_stack
;
2517 resolved_type
->field (i
).set_type
2518 (resolve_dynamic_type_internal (resolved_type
->field (i
).type (),
2520 gdb_assert (TYPE_FIELD_LOC_KIND (resolved_type
, i
)
2521 == FIELD_LOC_KIND_BITPOS
);
2523 new_bit_length
= TYPE_FIELD_BITPOS (resolved_type
, i
);
2524 if (TYPE_FIELD_BITSIZE (resolved_type
, i
) != 0)
2525 new_bit_length
+= TYPE_FIELD_BITSIZE (resolved_type
, i
);
2528 struct type
*real_type
2529 = check_typedef (resolved_type
->field (i
).type ());
2531 new_bit_length
+= (TYPE_LENGTH (real_type
) * TARGET_CHAR_BIT
);
2534 /* Normally, we would use the position and size of the last field
2535 to determine the size of the enclosing structure. But GCC seems
2536 to be encoding the position of some fields incorrectly when
2537 the struct contains a dynamic field that is not placed last.
2538 So we compute the struct size based on the field that has
2539 the highest position + size - probably the best we can do. */
2540 if (new_bit_length
> resolved_type_bit_length
)
2541 resolved_type_bit_length
= new_bit_length
;
2544 /* The length of a type won't change for fortran, but it does for C and Ada.
2545 For fortran the size of dynamic fields might change over time but not the
2546 type length of the structure. If we adapt it, we run into problems
2547 when calculating the element offset for arrays of structs. */
2548 if (current_language
->la_language
!= language_fortran
)
2549 TYPE_LENGTH (resolved_type
)
2550 = (resolved_type_bit_length
+ TARGET_CHAR_BIT
- 1) / TARGET_CHAR_BIT
;
2552 /* The Ada language uses this field as a cache for static fixed types: reset
2553 it as RESOLVED_TYPE must have its own static fixed type. */
2554 TYPE_TARGET_TYPE (resolved_type
) = NULL
;
2556 return resolved_type
;
2559 /* Worker for resolved_dynamic_type. */
2561 static struct type
*
2562 resolve_dynamic_type_internal (struct type
*type
,
2563 struct property_addr_info
*addr_stack
,
2566 struct type
*real_type
= check_typedef (type
);
2567 struct type
*resolved_type
= nullptr;
2568 struct dynamic_prop
*prop
;
2571 if (!is_dynamic_type_internal (real_type
, top_level
))
2574 gdb::optional
<CORE_ADDR
> type_length
;
2575 prop
= TYPE_DYNAMIC_LENGTH (type
);
2577 && dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2578 type_length
= value
;
2580 if (type
->code () == TYPE_CODE_TYPEDEF
)
2582 resolved_type
= copy_type (type
);
2583 TYPE_TARGET_TYPE (resolved_type
)
2584 = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (type
), addr_stack
,
2589 /* Before trying to resolve TYPE, make sure it is not a stub. */
2592 switch (type
->code ())
2596 struct property_addr_info pinfo
;
2598 pinfo
.type
= check_typedef (TYPE_TARGET_TYPE (type
));
2600 if (addr_stack
->valaddr
.data () != NULL
)
2601 pinfo
.addr
= extract_typed_address (addr_stack
->valaddr
.data (),
2604 pinfo
.addr
= read_memory_typed_address (addr_stack
->addr
, type
);
2605 pinfo
.next
= addr_stack
;
2607 resolved_type
= copy_type (type
);
2608 TYPE_TARGET_TYPE (resolved_type
)
2609 = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (type
),
2614 case TYPE_CODE_STRING
:
2615 /* Strings are very much like an array of characters, and can be
2616 treated as one here. */
2617 case TYPE_CODE_ARRAY
:
2618 resolved_type
= resolve_dynamic_array_or_string (type
, addr_stack
);
2621 case TYPE_CODE_RANGE
:
2622 resolved_type
= resolve_dynamic_range (type
, addr_stack
);
2625 case TYPE_CODE_UNION
:
2626 resolved_type
= resolve_dynamic_union (type
, addr_stack
);
2629 case TYPE_CODE_STRUCT
:
2630 resolved_type
= resolve_dynamic_struct (type
, addr_stack
);
2635 if (resolved_type
== nullptr)
2638 if (type_length
.has_value ())
2640 TYPE_LENGTH (resolved_type
) = *type_length
;
2641 resolved_type
->remove_dyn_prop (DYN_PROP_BYTE_SIZE
);
2644 /* Resolve data_location attribute. */
2645 prop
= TYPE_DATA_LOCATION (resolved_type
);
2647 && dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2649 TYPE_DYN_PROP_ADDR (prop
) = value
;
2650 TYPE_DYN_PROP_KIND (prop
) = PROP_CONST
;
2653 return resolved_type
;
2656 /* See gdbtypes.h */
2659 resolve_dynamic_type (struct type
*type
,
2660 gdb::array_view
<const gdb_byte
> valaddr
,
2663 struct property_addr_info pinfo
2664 = {check_typedef (type
), valaddr
, addr
, NULL
};
2666 return resolve_dynamic_type_internal (type
, &pinfo
, 1);
2669 /* See gdbtypes.h */
2672 type::dyn_prop (dynamic_prop_node_kind prop_kind
) const
2674 dynamic_prop_list
*node
= this->main_type
->dyn_prop_list
;
2676 while (node
!= NULL
)
2678 if (node
->prop_kind
== prop_kind
)
2685 /* See gdbtypes.h */
2688 type::add_dyn_prop (dynamic_prop_node_kind prop_kind
, dynamic_prop prop
)
2690 struct dynamic_prop_list
*temp
;
2692 gdb_assert (TYPE_OBJFILE_OWNED (this));
2694 temp
= XOBNEW (&TYPE_OBJFILE (this)->objfile_obstack
,
2695 struct dynamic_prop_list
);
2696 temp
->prop_kind
= prop_kind
;
2698 temp
->next
= this->main_type
->dyn_prop_list
;
2700 this->main_type
->dyn_prop_list
= temp
;
2703 /* See gdbtypes.h. */
2706 type::remove_dyn_prop (dynamic_prop_node_kind kind
)
2708 struct dynamic_prop_list
*prev_node
, *curr_node
;
2710 curr_node
= this->main_type
->dyn_prop_list
;
2713 while (NULL
!= curr_node
)
2715 if (curr_node
->prop_kind
== kind
)
2717 /* Update the linked list but don't free anything.
2718 The property was allocated on objstack and it is not known
2719 if we are on top of it. Nevertheless, everything is released
2720 when the complete objstack is freed. */
2721 if (NULL
== prev_node
)
2722 this->main_type
->dyn_prop_list
= curr_node
->next
;
2724 prev_node
->next
= curr_node
->next
;
2729 prev_node
= curr_node
;
2730 curr_node
= curr_node
->next
;
2734 /* Find the real type of TYPE. This function returns the real type,
2735 after removing all layers of typedefs, and completing opaque or stub
2736 types. Completion changes the TYPE argument, but stripping of
2739 Instance flags (e.g. const/volatile) are preserved as typedefs are
2740 stripped. If necessary a new qualified form of the underlying type
2743 NOTE: This will return a typedef if TYPE_TARGET_TYPE for the typedef has
2744 not been computed and we're either in the middle of reading symbols, or
2745 there was no name for the typedef in the debug info.
2747 NOTE: Lookup of opaque types can throw errors for invalid symbol files.
2748 QUITs in the symbol reading code can also throw.
2749 Thus this function can throw an exception.
2751 If TYPE is a TYPE_CODE_TYPEDEF, its length is updated to the length of
2754 If this is a stubbed struct (i.e. declared as struct foo *), see if
2755 we can find a full definition in some other file. If so, copy this
2756 definition, so we can use it in future. There used to be a comment
2757 (but not any code) that if we don't find a full definition, we'd
2758 set a flag so we don't spend time in the future checking the same
2759 type. That would be a mistake, though--we might load in more
2760 symbols which contain a full definition for the type. */
2763 check_typedef (struct type
*type
)
2765 struct type
*orig_type
= type
;
2766 /* While we're removing typedefs, we don't want to lose qualifiers.
2767 E.g., const/volatile. */
2768 int instance_flags
= TYPE_INSTANCE_FLAGS (type
);
2772 while (type
->code () == TYPE_CODE_TYPEDEF
)
2774 if (!TYPE_TARGET_TYPE (type
))
2779 /* It is dangerous to call lookup_symbol if we are currently
2780 reading a symtab. Infinite recursion is one danger. */
2781 if (currently_reading_symtab
)
2782 return make_qualified_type (type
, instance_flags
, NULL
);
2784 name
= type
->name ();
2785 /* FIXME: shouldn't we look in STRUCT_DOMAIN and/or
2786 VAR_DOMAIN as appropriate? */
2789 stub_noname_complaint ();
2790 return make_qualified_type (type
, instance_flags
, NULL
);
2792 sym
= lookup_symbol (name
, 0, STRUCT_DOMAIN
, 0).symbol
;
2794 TYPE_TARGET_TYPE (type
) = SYMBOL_TYPE (sym
);
2795 else /* TYPE_CODE_UNDEF */
2796 TYPE_TARGET_TYPE (type
) = alloc_type_arch (get_type_arch (type
));
2798 type
= TYPE_TARGET_TYPE (type
);
2800 /* Preserve the instance flags as we traverse down the typedef chain.
2802 Handling address spaces/classes is nasty, what do we do if there's a
2804 E.g., what if an outer typedef marks the type as class_1 and an inner
2805 typedef marks the type as class_2?
2806 This is the wrong place to do such error checking. We leave it to
2807 the code that created the typedef in the first place to flag the
2808 error. We just pick the outer address space (akin to letting the
2809 outer cast in a chain of casting win), instead of assuming
2810 "it can't happen". */
2812 const int ALL_SPACES
= (TYPE_INSTANCE_FLAG_CODE_SPACE
2813 | TYPE_INSTANCE_FLAG_DATA_SPACE
);
2814 const int ALL_CLASSES
= TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL
;
2815 int new_instance_flags
= TYPE_INSTANCE_FLAGS (type
);
2817 /* Treat code vs data spaces and address classes separately. */
2818 if ((instance_flags
& ALL_SPACES
) != 0)
2819 new_instance_flags
&= ~ALL_SPACES
;
2820 if ((instance_flags
& ALL_CLASSES
) != 0)
2821 new_instance_flags
&= ~ALL_CLASSES
;
2823 instance_flags
|= new_instance_flags
;
2827 /* If this is a struct/class/union with no fields, then check
2828 whether a full definition exists somewhere else. This is for
2829 systems where a type definition with no fields is issued for such
2830 types, instead of identifying them as stub types in the first
2833 if (TYPE_IS_OPAQUE (type
)
2834 && opaque_type_resolution
2835 && !currently_reading_symtab
)
2837 const char *name
= type
->name ();
2838 struct type
*newtype
;
2842 stub_noname_complaint ();
2843 return make_qualified_type (type
, instance_flags
, NULL
);
2845 newtype
= lookup_transparent_type (name
);
2849 /* If the resolved type and the stub are in the same
2850 objfile, then replace the stub type with the real deal.
2851 But if they're in separate objfiles, leave the stub
2852 alone; we'll just look up the transparent type every time
2853 we call check_typedef. We can't create pointers between
2854 types allocated to different objfiles, since they may
2855 have different lifetimes. Trying to copy NEWTYPE over to
2856 TYPE's objfile is pointless, too, since you'll have to
2857 move over any other types NEWTYPE refers to, which could
2858 be an unbounded amount of stuff. */
2859 if (TYPE_OBJFILE (newtype
) == TYPE_OBJFILE (type
))
2860 type
= make_qualified_type (newtype
,
2861 TYPE_INSTANCE_FLAGS (type
),
2867 /* Otherwise, rely on the stub flag being set for opaque/stubbed
2869 else if (TYPE_STUB (type
) && !currently_reading_symtab
)
2871 const char *name
= type
->name ();
2872 /* FIXME: shouldn't we look in STRUCT_DOMAIN and/or VAR_DOMAIN
2878 stub_noname_complaint ();
2879 return make_qualified_type (type
, instance_flags
, NULL
);
2881 sym
= lookup_symbol (name
, 0, STRUCT_DOMAIN
, 0).symbol
;
2884 /* Same as above for opaque types, we can replace the stub
2885 with the complete type only if they are in the same
2887 if (TYPE_OBJFILE (SYMBOL_TYPE (sym
)) == TYPE_OBJFILE (type
))
2888 type
= make_qualified_type (SYMBOL_TYPE (sym
),
2889 TYPE_INSTANCE_FLAGS (type
),
2892 type
= SYMBOL_TYPE (sym
);
2896 if (TYPE_TARGET_STUB (type
))
2898 struct type
*target_type
= check_typedef (TYPE_TARGET_TYPE (type
));
2900 if (TYPE_STUB (target_type
) || TYPE_TARGET_STUB (target_type
))
2902 /* Nothing we can do. */
2904 else if (type
->code () == TYPE_CODE_RANGE
)
2906 TYPE_LENGTH (type
) = TYPE_LENGTH (target_type
);
2907 TYPE_TARGET_STUB (type
) = 0;
2909 else if (type
->code () == TYPE_CODE_ARRAY
2910 && update_static_array_size (type
))
2911 TYPE_TARGET_STUB (type
) = 0;
2914 type
= make_qualified_type (type
, instance_flags
, NULL
);
2916 /* Cache TYPE_LENGTH for future use. */
2917 TYPE_LENGTH (orig_type
) = TYPE_LENGTH (type
);
2922 /* Parse a type expression in the string [P..P+LENGTH). If an error
2923 occurs, silently return a void type. */
2925 static struct type
*
2926 safe_parse_type (struct gdbarch
*gdbarch
, char *p
, int length
)
2928 struct ui_file
*saved_gdb_stderr
;
2929 struct type
*type
= NULL
; /* Initialize to keep gcc happy. */
2931 /* Suppress error messages. */
2932 saved_gdb_stderr
= gdb_stderr
;
2933 gdb_stderr
= &null_stream
;
2935 /* Call parse_and_eval_type() without fear of longjmp()s. */
2938 type
= parse_and_eval_type (p
, length
);
2940 catch (const gdb_exception_error
&except
)
2942 type
= builtin_type (gdbarch
)->builtin_void
;
2945 /* Stop suppressing error messages. */
2946 gdb_stderr
= saved_gdb_stderr
;
2951 /* Ugly hack to convert method stubs into method types.
2953 He ain't kiddin'. This demangles the name of the method into a
2954 string including argument types, parses out each argument type,
2955 generates a string casting a zero to that type, evaluates the
2956 string, and stuffs the resulting type into an argtype vector!!!
2957 Then it knows the type of the whole function (including argument
2958 types for overloading), which info used to be in the stab's but was
2959 removed to hack back the space required for them. */
2962 check_stub_method (struct type
*type
, int method_id
, int signature_id
)
2964 struct gdbarch
*gdbarch
= get_type_arch (type
);
2966 char *mangled_name
= gdb_mangle_name (type
, method_id
, signature_id
);
2967 char *demangled_name
= gdb_demangle (mangled_name
,
2968 DMGL_PARAMS
| DMGL_ANSI
);
2969 char *argtypetext
, *p
;
2970 int depth
= 0, argcount
= 1;
2971 struct field
*argtypes
;
2974 /* Make sure we got back a function string that we can use. */
2976 p
= strchr (demangled_name
, '(');
2980 if (demangled_name
== NULL
|| p
== NULL
)
2981 error (_("Internal: Cannot demangle mangled name `%s'."),
2984 /* Now, read in the parameters that define this type. */
2989 if (*p
== '(' || *p
== '<')
2993 else if (*p
== ')' || *p
== '>')
2997 else if (*p
== ',' && depth
== 0)
3005 /* If we read one argument and it was ``void'', don't count it. */
3006 if (startswith (argtypetext
, "(void)"))
3009 /* We need one extra slot, for the THIS pointer. */
3011 argtypes
= (struct field
*)
3012 TYPE_ALLOC (type
, (argcount
+ 1) * sizeof (struct field
));
3015 /* Add THIS pointer for non-static methods. */
3016 f
= TYPE_FN_FIELDLIST1 (type
, method_id
);
3017 if (TYPE_FN_FIELD_STATIC_P (f
, signature_id
))
3021 argtypes
[0].set_type (lookup_pointer_type (type
));
3025 if (*p
!= ')') /* () means no args, skip while. */
3030 if (depth
<= 0 && (*p
== ',' || *p
== ')'))
3032 /* Avoid parsing of ellipsis, they will be handled below.
3033 Also avoid ``void'' as above. */
3034 if (strncmp (argtypetext
, "...", p
- argtypetext
) != 0
3035 && strncmp (argtypetext
, "void", p
- argtypetext
) != 0)
3037 argtypes
[argcount
].set_type
3038 (safe_parse_type (gdbarch
, argtypetext
, p
- argtypetext
));
3041 argtypetext
= p
+ 1;
3044 if (*p
== '(' || *p
== '<')
3048 else if (*p
== ')' || *p
== '>')
3057 TYPE_FN_FIELD_PHYSNAME (f
, signature_id
) = mangled_name
;
3059 /* Now update the old "stub" type into a real type. */
3060 mtype
= TYPE_FN_FIELD_TYPE (f
, signature_id
);
3061 /* MTYPE may currently be a function (TYPE_CODE_FUNC).
3062 We want a method (TYPE_CODE_METHOD). */
3063 smash_to_method_type (mtype
, type
, TYPE_TARGET_TYPE (mtype
),
3064 argtypes
, argcount
, p
[-2] == '.');
3065 TYPE_STUB (mtype
) = 0;
3066 TYPE_FN_FIELD_STUB (f
, signature_id
) = 0;
3068 xfree (demangled_name
);
3071 /* This is the external interface to check_stub_method, above. This
3072 function unstubs all of the signatures for TYPE's METHOD_ID method
3073 name. After calling this function TYPE_FN_FIELD_STUB will be
3074 cleared for each signature and TYPE_FN_FIELDLIST_NAME will be
3077 This function unfortunately can not die until stabs do. */
3080 check_stub_method_group (struct type
*type
, int method_id
)
3082 int len
= TYPE_FN_FIELDLIST_LENGTH (type
, method_id
);
3083 struct fn_field
*f
= TYPE_FN_FIELDLIST1 (type
, method_id
);
3085 for (int j
= 0; j
< len
; j
++)
3087 if (TYPE_FN_FIELD_STUB (f
, j
))
3088 check_stub_method (type
, method_id
, j
);
3092 /* Ensure it is in .rodata (if available) by working around GCC PR 44690. */
3093 const struct cplus_struct_type cplus_struct_default
= { };
3096 allocate_cplus_struct_type (struct type
*type
)
3098 if (HAVE_CPLUS_STRUCT (type
))
3099 /* Structure was already allocated. Nothing more to do. */
3102 TYPE_SPECIFIC_FIELD (type
) = TYPE_SPECIFIC_CPLUS_STUFF
;
3103 TYPE_RAW_CPLUS_SPECIFIC (type
) = (struct cplus_struct_type
*)
3104 TYPE_ALLOC (type
, sizeof (struct cplus_struct_type
));
3105 *(TYPE_RAW_CPLUS_SPECIFIC (type
)) = cplus_struct_default
;
3106 set_type_vptr_fieldno (type
, -1);
3109 const struct gnat_aux_type gnat_aux_default
=
3112 /* Set the TYPE's type-specific kind to TYPE_SPECIFIC_GNAT_STUFF,
3113 and allocate the associated gnat-specific data. The gnat-specific
3114 data is also initialized to gnat_aux_default. */
3117 allocate_gnat_aux_type (struct type
*type
)
3119 TYPE_SPECIFIC_FIELD (type
) = TYPE_SPECIFIC_GNAT_STUFF
;
3120 TYPE_GNAT_SPECIFIC (type
) = (struct gnat_aux_type
*)
3121 TYPE_ALLOC (type
, sizeof (struct gnat_aux_type
));
3122 *(TYPE_GNAT_SPECIFIC (type
)) = gnat_aux_default
;
3125 /* Helper function to initialize a newly allocated type. Set type code
3126 to CODE and initialize the type-specific fields accordingly. */
3129 set_type_code (struct type
*type
, enum type_code code
)
3131 type
->set_code (code
);
3135 case TYPE_CODE_STRUCT
:
3136 case TYPE_CODE_UNION
:
3137 case TYPE_CODE_NAMESPACE
:
3138 INIT_CPLUS_SPECIFIC (type
);
3141 TYPE_SPECIFIC_FIELD (type
) = TYPE_SPECIFIC_FLOATFORMAT
;
3143 case TYPE_CODE_FUNC
:
3144 INIT_FUNC_SPECIFIC (type
);
3149 /* Helper function to verify floating-point format and size.
3150 BIT is the type size in bits; if BIT equals -1, the size is
3151 determined by the floatformat. Returns size to be used. */
3154 verify_floatformat (int bit
, const struct floatformat
*floatformat
)
3156 gdb_assert (floatformat
!= NULL
);
3159 bit
= floatformat
->totalsize
;
3161 gdb_assert (bit
>= 0);
3162 gdb_assert (bit
>= floatformat
->totalsize
);
3167 /* Return the floating-point format for a floating-point variable of
3170 const struct floatformat
*
3171 floatformat_from_type (const struct type
*type
)
3173 gdb_assert (type
->code () == TYPE_CODE_FLT
);
3174 gdb_assert (TYPE_FLOATFORMAT (type
));
3175 return TYPE_FLOATFORMAT (type
);
3178 /* Helper function to initialize the standard scalar types.
3180 If NAME is non-NULL, then it is used to initialize the type name.
3181 Note that NAME is not copied; it is required to have a lifetime at
3182 least as long as OBJFILE. */
3185 init_type (struct objfile
*objfile
, enum type_code code
, int bit
,
3190 type
= alloc_type (objfile
);
3191 set_type_code (type
, code
);
3192 gdb_assert ((bit
% TARGET_CHAR_BIT
) == 0);
3193 TYPE_LENGTH (type
) = bit
/ TARGET_CHAR_BIT
;
3194 type
->set_name (name
);
3199 /* Allocate a TYPE_CODE_ERROR type structure associated with OBJFILE,
3200 to use with variables that have no debug info. NAME is the type
3203 static struct type
*
3204 init_nodebug_var_type (struct objfile
*objfile
, const char *name
)
3206 return init_type (objfile
, TYPE_CODE_ERROR
, 0, name
);
3209 /* Allocate a TYPE_CODE_INT type structure associated with OBJFILE.
3210 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
3211 the type's TYPE_UNSIGNED flag. NAME is the type name. */
3214 init_integer_type (struct objfile
*objfile
,
3215 int bit
, int unsigned_p
, const char *name
)
3219 t
= init_type (objfile
, TYPE_CODE_INT
, bit
, name
);
3221 TYPE_UNSIGNED (t
) = 1;
3226 /* Allocate a TYPE_CODE_CHAR type structure associated with OBJFILE.
3227 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
3228 the type's TYPE_UNSIGNED flag. NAME is the type name. */
3231 init_character_type (struct objfile
*objfile
,
3232 int bit
, int unsigned_p
, const char *name
)
3236 t
= init_type (objfile
, TYPE_CODE_CHAR
, bit
, name
);
3238 TYPE_UNSIGNED (t
) = 1;
3243 /* Allocate a TYPE_CODE_BOOL type structure associated with OBJFILE.
3244 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
3245 the type's TYPE_UNSIGNED flag. NAME is the type name. */
3248 init_boolean_type (struct objfile
*objfile
,
3249 int bit
, int unsigned_p
, const char *name
)
3253 t
= init_type (objfile
, TYPE_CODE_BOOL
, bit
, name
);
3255 TYPE_UNSIGNED (t
) = 1;
3260 /* Allocate a TYPE_CODE_FLT type structure associated with OBJFILE.
3261 BIT is the type size in bits; if BIT equals -1, the size is
3262 determined by the floatformat. NAME is the type name. Set the
3263 TYPE_FLOATFORMAT from FLOATFORMATS. BYTE_ORDER is the byte order
3264 to use. If it is BFD_ENDIAN_UNKNOWN (the default), then the byte
3265 order of the objfile's architecture is used. */
3268 init_float_type (struct objfile
*objfile
,
3269 int bit
, const char *name
,
3270 const struct floatformat
**floatformats
,
3271 enum bfd_endian byte_order
)
3273 if (byte_order
== BFD_ENDIAN_UNKNOWN
)
3275 struct gdbarch
*gdbarch
= objfile
->arch ();
3276 byte_order
= gdbarch_byte_order (gdbarch
);
3278 const struct floatformat
*fmt
= floatformats
[byte_order
];
3281 bit
= verify_floatformat (bit
, fmt
);
3282 t
= init_type (objfile
, TYPE_CODE_FLT
, bit
, name
);
3283 TYPE_FLOATFORMAT (t
) = fmt
;
3288 /* Allocate a TYPE_CODE_DECFLOAT type structure associated with OBJFILE.
3289 BIT is the type size in bits. NAME is the type name. */
3292 init_decfloat_type (struct objfile
*objfile
, int bit
, const char *name
)
3296 t
= init_type (objfile
, TYPE_CODE_DECFLOAT
, bit
, name
);
3300 /* Allocate a TYPE_CODE_COMPLEX type structure. NAME is the type
3301 name. TARGET_TYPE is the component type. */
3304 init_complex_type (const char *name
, struct type
*target_type
)
3308 gdb_assert (target_type
->code () == TYPE_CODE_INT
3309 || target_type
->code () == TYPE_CODE_FLT
);
3311 if (TYPE_MAIN_TYPE (target_type
)->flds_bnds
.complex_type
== nullptr)
3313 if (name
== nullptr)
3316 = (char *) TYPE_ALLOC (target_type
,
3317 strlen (target_type
->name ())
3318 + strlen ("_Complex ") + 1);
3319 strcpy (new_name
, "_Complex ");
3320 strcat (new_name
, target_type
->name ());
3324 t
= alloc_type_copy (target_type
);
3325 set_type_code (t
, TYPE_CODE_COMPLEX
);
3326 TYPE_LENGTH (t
) = 2 * TYPE_LENGTH (target_type
);
3329 TYPE_TARGET_TYPE (t
) = target_type
;
3330 TYPE_MAIN_TYPE (target_type
)->flds_bnds
.complex_type
= t
;
3333 return TYPE_MAIN_TYPE (target_type
)->flds_bnds
.complex_type
;
3336 /* Allocate a TYPE_CODE_PTR type structure associated with OBJFILE.
3337 BIT is the pointer type size in bits. NAME is the type name.
3338 TARGET_TYPE is the pointer target type. Always sets the pointer type's
3339 TYPE_UNSIGNED flag. */
3342 init_pointer_type (struct objfile
*objfile
,
3343 int bit
, const char *name
, struct type
*target_type
)
3347 t
= init_type (objfile
, TYPE_CODE_PTR
, bit
, name
);
3348 TYPE_TARGET_TYPE (t
) = target_type
;
3349 TYPE_UNSIGNED (t
) = 1;
3353 /* See gdbtypes.h. */
3356 type_raw_align (struct type
*type
)
3358 if (type
->align_log2
!= 0)
3359 return 1 << (type
->align_log2
- 1);
3363 /* See gdbtypes.h. */
3366 type_align (struct type
*type
)
3368 /* Check alignment provided in the debug information. */
3369 unsigned raw_align
= type_raw_align (type
);
3373 /* Allow the architecture to provide an alignment. */
3374 struct gdbarch
*arch
= get_type_arch (type
);
3375 ULONGEST align
= gdbarch_type_align (arch
, type
);
3379 switch (type
->code ())
3382 case TYPE_CODE_FUNC
:
3383 case TYPE_CODE_FLAGS
:
3385 case TYPE_CODE_RANGE
:
3387 case TYPE_CODE_ENUM
:
3389 case TYPE_CODE_RVALUE_REF
:
3390 case TYPE_CODE_CHAR
:
3391 case TYPE_CODE_BOOL
:
3392 case TYPE_CODE_DECFLOAT
:
3393 case TYPE_CODE_METHODPTR
:
3394 case TYPE_CODE_MEMBERPTR
:
3395 align
= type_length_units (check_typedef (type
));
3398 case TYPE_CODE_ARRAY
:
3399 case TYPE_CODE_COMPLEX
:
3400 case TYPE_CODE_TYPEDEF
:
3401 align
= type_align (TYPE_TARGET_TYPE (type
));
3404 case TYPE_CODE_STRUCT
:
3405 case TYPE_CODE_UNION
:
3407 int number_of_non_static_fields
= 0;
3408 for (unsigned i
= 0; i
< type
->num_fields (); ++i
)
3410 if (!field_is_static (&type
->field (i
)))
3412 number_of_non_static_fields
++;
3413 ULONGEST f_align
= type_align (type
->field (i
).type ());
3416 /* Don't pretend we know something we don't. */
3420 if (f_align
> align
)
3424 /* A struct with no fields, or with only static fields has an
3426 if (number_of_non_static_fields
== 0)
3432 case TYPE_CODE_STRING
:
3433 /* Not sure what to do here, and these can't appear in C or C++
3437 case TYPE_CODE_VOID
:
3441 case TYPE_CODE_ERROR
:
3442 case TYPE_CODE_METHOD
:
3447 if ((align
& (align
- 1)) != 0)
3449 /* Not a power of 2, so pass. */
3456 /* See gdbtypes.h. */
3459 set_type_align (struct type
*type
, ULONGEST align
)
3461 /* Must be a power of 2. Zero is ok. */
3462 gdb_assert ((align
& (align
- 1)) == 0);
3464 unsigned result
= 0;
3471 if (result
>= (1 << TYPE_ALIGN_BITS
))
3474 type
->align_log2
= result
;
3479 /* Queries on types. */
3482 can_dereference (struct type
*t
)
3484 /* FIXME: Should we return true for references as well as
3486 t
= check_typedef (t
);
3489 && t
->code () == TYPE_CODE_PTR
3490 && TYPE_TARGET_TYPE (t
)->code () != TYPE_CODE_VOID
);
3494 is_integral_type (struct type
*t
)
3496 t
= check_typedef (t
);
3499 && ((t
->code () == TYPE_CODE_INT
)
3500 || (t
->code () == TYPE_CODE_ENUM
)
3501 || (t
->code () == TYPE_CODE_FLAGS
)
3502 || (t
->code () == TYPE_CODE_CHAR
)
3503 || (t
->code () == TYPE_CODE_RANGE
)
3504 || (t
->code () == TYPE_CODE_BOOL
)));
3508 is_floating_type (struct type
*t
)
3510 t
= check_typedef (t
);
3513 && ((t
->code () == TYPE_CODE_FLT
)
3514 || (t
->code () == TYPE_CODE_DECFLOAT
)));
3517 /* Return true if TYPE is scalar. */
3520 is_scalar_type (struct type
*type
)
3522 type
= check_typedef (type
);
3524 switch (type
->code ())
3526 case TYPE_CODE_ARRAY
:
3527 case TYPE_CODE_STRUCT
:
3528 case TYPE_CODE_UNION
:
3530 case TYPE_CODE_STRING
:
3537 /* Return true if T is scalar, or a composite type which in practice has
3538 the memory layout of a scalar type. E.g., an array or struct with only
3539 one scalar element inside it, or a union with only scalar elements. */
3542 is_scalar_type_recursive (struct type
*t
)
3544 t
= check_typedef (t
);
3546 if (is_scalar_type (t
))
3548 /* Are we dealing with an array or string of known dimensions? */
3549 else if ((t
->code () == TYPE_CODE_ARRAY
3550 || t
->code () == TYPE_CODE_STRING
) && t
->num_fields () == 1
3551 && t
->index_type ()->code () == TYPE_CODE_RANGE
)
3553 LONGEST low_bound
, high_bound
;
3554 struct type
*elt_type
= check_typedef (TYPE_TARGET_TYPE (t
));
3556 get_discrete_bounds (t
->index_type (), &low_bound
, &high_bound
);
3558 return high_bound
== low_bound
&& is_scalar_type_recursive (elt_type
);
3560 /* Are we dealing with a struct with one element? */
3561 else if (t
->code () == TYPE_CODE_STRUCT
&& t
->num_fields () == 1)
3562 return is_scalar_type_recursive (t
->field (0).type ());
3563 else if (t
->code () == TYPE_CODE_UNION
)
3565 int i
, n
= t
->num_fields ();
3567 /* If all elements of the union are scalar, then the union is scalar. */
3568 for (i
= 0; i
< n
; i
++)
3569 if (!is_scalar_type_recursive (t
->field (i
).type ()))
3578 /* Return true is T is a class or a union. False otherwise. */
3581 class_or_union_p (const struct type
*t
)
3583 return (t
->code () == TYPE_CODE_STRUCT
3584 || t
->code () == TYPE_CODE_UNION
);
3587 /* A helper function which returns true if types A and B represent the
3588 "same" class type. This is true if the types have the same main
3589 type, or the same name. */
3592 class_types_same_p (const struct type
*a
, const struct type
*b
)
3594 return (TYPE_MAIN_TYPE (a
) == TYPE_MAIN_TYPE (b
)
3595 || (a
->name () && b
->name ()
3596 && !strcmp (a
->name (), b
->name ())));
3599 /* If BASE is an ancestor of DCLASS return the distance between them.
3600 otherwise return -1;
3604 class B: public A {};
3605 class C: public B {};
3608 distance_to_ancestor (A, A, 0) = 0
3609 distance_to_ancestor (A, B, 0) = 1
3610 distance_to_ancestor (A, C, 0) = 2
3611 distance_to_ancestor (A, D, 0) = 3
3613 If PUBLIC is 1 then only public ancestors are considered,
3614 and the function returns the distance only if BASE is a public ancestor
3618 distance_to_ancestor (A, D, 1) = -1. */
3621 distance_to_ancestor (struct type
*base
, struct type
*dclass
, int is_public
)
3626 base
= check_typedef (base
);
3627 dclass
= check_typedef (dclass
);
3629 if (class_types_same_p (base
, dclass
))
3632 for (i
= 0; i
< TYPE_N_BASECLASSES (dclass
); i
++)
3634 if (is_public
&& ! BASETYPE_VIA_PUBLIC (dclass
, i
))
3637 d
= distance_to_ancestor (base
, TYPE_BASECLASS (dclass
, i
), is_public
);
3645 /* Check whether BASE is an ancestor or base class or DCLASS
3646 Return 1 if so, and 0 if not.
3647 Note: If BASE and DCLASS are of the same type, this function
3648 will return 1. So for some class A, is_ancestor (A, A) will
3652 is_ancestor (struct type
*base
, struct type
*dclass
)
3654 return distance_to_ancestor (base
, dclass
, 0) >= 0;
3657 /* Like is_ancestor, but only returns true when BASE is a public
3658 ancestor of DCLASS. */
3661 is_public_ancestor (struct type
*base
, struct type
*dclass
)
3663 return distance_to_ancestor (base
, dclass
, 1) >= 0;
3666 /* A helper function for is_unique_ancestor. */
3669 is_unique_ancestor_worker (struct type
*base
, struct type
*dclass
,
3671 const gdb_byte
*valaddr
, int embedded_offset
,
3672 CORE_ADDR address
, struct value
*val
)
3676 base
= check_typedef (base
);
3677 dclass
= check_typedef (dclass
);
3679 for (i
= 0; i
< TYPE_N_BASECLASSES (dclass
) && count
< 2; ++i
)
3684 iter
= check_typedef (TYPE_BASECLASS (dclass
, i
));
3686 this_offset
= baseclass_offset (dclass
, i
, valaddr
, embedded_offset
,
3689 if (class_types_same_p (base
, iter
))
3691 /* If this is the first subclass, set *OFFSET and set count
3692 to 1. Otherwise, if this is at the same offset as
3693 previous instances, do nothing. Otherwise, increment
3697 *offset
= this_offset
;
3700 else if (this_offset
== *offset
)
3708 count
+= is_unique_ancestor_worker (base
, iter
, offset
,
3710 embedded_offset
+ this_offset
,
3717 /* Like is_ancestor, but only returns true if BASE is a unique base
3718 class of the type of VAL. */
3721 is_unique_ancestor (struct type
*base
, struct value
*val
)
3725 return is_unique_ancestor_worker (base
, value_type (val
), &offset
,
3726 value_contents_for_printing (val
),
3727 value_embedded_offset (val
),
3728 value_address (val
), val
) == 1;
3731 /* See gdbtypes.h. */
3734 type_byte_order (const struct type
*type
)
3736 bfd_endian byteorder
= gdbarch_byte_order (get_type_arch (type
));
3737 if (TYPE_ENDIANITY_NOT_DEFAULT (type
))
3739 if (byteorder
== BFD_ENDIAN_BIG
)
3740 return BFD_ENDIAN_LITTLE
;
3743 gdb_assert (byteorder
== BFD_ENDIAN_LITTLE
);
3744 return BFD_ENDIAN_BIG
;
3752 /* Overload resolution. */
3754 /* Return the sum of the rank of A with the rank of B. */
3757 sum_ranks (struct rank a
, struct rank b
)
3760 c
.rank
= a
.rank
+ b
.rank
;
3761 c
.subrank
= a
.subrank
+ b
.subrank
;
3765 /* Compare rank A and B and return:
3767 1 if a is better than b
3768 -1 if b is better than a. */
3771 compare_ranks (struct rank a
, struct rank b
)
3773 if (a
.rank
== b
.rank
)
3775 if (a
.subrank
== b
.subrank
)
3777 if (a
.subrank
< b
.subrank
)
3779 if (a
.subrank
> b
.subrank
)
3783 if (a
.rank
< b
.rank
)
3786 /* a.rank > b.rank */
3790 /* Functions for overload resolution begin here. */
3792 /* Compare two badness vectors A and B and return the result.
3793 0 => A and B are identical
3794 1 => A and B are incomparable
3795 2 => A is better than B
3796 3 => A is worse than B */
3799 compare_badness (const badness_vector
&a
, const badness_vector
&b
)
3803 short found_pos
= 0; /* any positives in c? */
3804 short found_neg
= 0; /* any negatives in c? */
3806 /* differing sizes => incomparable */
3807 if (a
.size () != b
.size ())
3810 /* Subtract b from a */
3811 for (i
= 0; i
< a
.size (); i
++)
3813 tmp
= compare_ranks (b
[i
], a
[i
]);
3823 return 1; /* incomparable */
3825 return 3; /* A > B */
3831 return 2; /* A < B */
3833 return 0; /* A == B */
3837 /* Rank a function by comparing its parameter types (PARMS), to the
3838 types of an argument list (ARGS). Return the badness vector. This
3839 has ARGS.size() + 1 entries. */
3842 rank_function (gdb::array_view
<type
*> parms
,
3843 gdb::array_view
<value
*> args
)
3845 /* add 1 for the length-match rank. */
3847 bv
.reserve (1 + args
.size ());
3849 /* First compare the lengths of the supplied lists.
3850 If there is a mismatch, set it to a high value. */
3852 /* pai/1997-06-03 FIXME: when we have debug info about default
3853 arguments and ellipsis parameter lists, we should consider those
3854 and rank the length-match more finely. */
3856 bv
.push_back ((args
.size () != parms
.size ())
3857 ? LENGTH_MISMATCH_BADNESS
3858 : EXACT_MATCH_BADNESS
);
3860 /* Now rank all the parameters of the candidate function. */
3861 size_t min_len
= std::min (parms
.size (), args
.size ());
3863 for (size_t i
= 0; i
< min_len
; i
++)
3864 bv
.push_back (rank_one_type (parms
[i
], value_type (args
[i
]),
3867 /* If more arguments than parameters, add dummy entries. */
3868 for (size_t i
= min_len
; i
< args
.size (); i
++)
3869 bv
.push_back (TOO_FEW_PARAMS_BADNESS
);
3874 /* Compare the names of two integer types, assuming that any sign
3875 qualifiers have been checked already. We do it this way because
3876 there may be an "int" in the name of one of the types. */
3879 integer_types_same_name_p (const char *first
, const char *second
)
3881 int first_p
, second_p
;
3883 /* If both are shorts, return 1; if neither is a short, keep
3885 first_p
= (strstr (first
, "short") != NULL
);
3886 second_p
= (strstr (second
, "short") != NULL
);
3887 if (first_p
&& second_p
)
3889 if (first_p
|| second_p
)
3892 /* Likewise for long. */
3893 first_p
= (strstr (first
, "long") != NULL
);
3894 second_p
= (strstr (second
, "long") != NULL
);
3895 if (first_p
&& second_p
)
3897 if (first_p
|| second_p
)
3900 /* Likewise for char. */
3901 first_p
= (strstr (first
, "char") != NULL
);
3902 second_p
= (strstr (second
, "char") != NULL
);
3903 if (first_p
&& second_p
)
3905 if (first_p
|| second_p
)
3908 /* They must both be ints. */
3912 /* Compares type A to type B. Returns true if they represent the same
3913 type, false otherwise. */
3916 types_equal (struct type
*a
, struct type
*b
)
3918 /* Identical type pointers. */
3919 /* However, this still doesn't catch all cases of same type for b
3920 and a. The reason is that builtin types are different from
3921 the same ones constructed from the object. */
3925 /* Resolve typedefs */
3926 if (a
->code () == TYPE_CODE_TYPEDEF
)
3927 a
= check_typedef (a
);
3928 if (b
->code () == TYPE_CODE_TYPEDEF
)
3929 b
= check_typedef (b
);
3931 /* If after resolving typedefs a and b are not of the same type
3932 code then they are not equal. */
3933 if (a
->code () != b
->code ())
3936 /* If a and b are both pointers types or both reference types then
3937 they are equal of the same type iff the objects they refer to are
3938 of the same type. */
3939 if (a
->code () == TYPE_CODE_PTR
3940 || a
->code () == TYPE_CODE_REF
)
3941 return types_equal (TYPE_TARGET_TYPE (a
),
3942 TYPE_TARGET_TYPE (b
));
3944 /* Well, damnit, if the names are exactly the same, I'll say they
3945 are exactly the same. This happens when we generate method
3946 stubs. The types won't point to the same address, but they
3947 really are the same. */
3949 if (a
->name () && b
->name ()
3950 && strcmp (a
->name (), b
->name ()) == 0)
3953 /* Check if identical after resolving typedefs. */
3957 /* Two function types are equal if their argument and return types
3959 if (a
->code () == TYPE_CODE_FUNC
)
3963 if (a
->num_fields () != b
->num_fields ())
3966 if (!types_equal (TYPE_TARGET_TYPE (a
), TYPE_TARGET_TYPE (b
)))
3969 for (i
= 0; i
< a
->num_fields (); ++i
)
3970 if (!types_equal (a
->field (i
).type (), b
->field (i
).type ()))
3979 /* Deep comparison of types. */
3981 /* An entry in the type-equality bcache. */
3983 struct type_equality_entry
3985 type_equality_entry (struct type
*t1
, struct type
*t2
)
3991 struct type
*type1
, *type2
;
3994 /* A helper function to compare two strings. Returns true if they are
3995 the same, false otherwise. Handles NULLs properly. */
3998 compare_maybe_null_strings (const char *s
, const char *t
)
4000 if (s
== NULL
|| t
== NULL
)
4002 return strcmp (s
, t
) == 0;
4005 /* A helper function for check_types_worklist that checks two types for
4006 "deep" equality. Returns true if the types are considered the
4007 same, false otherwise. */
4010 check_types_equal (struct type
*type1
, struct type
*type2
,
4011 std::vector
<type_equality_entry
> *worklist
)
4013 type1
= check_typedef (type1
);
4014 type2
= check_typedef (type2
);
4019 if (type1
->code () != type2
->code ()
4020 || TYPE_LENGTH (type1
) != TYPE_LENGTH (type2
)
4021 || TYPE_UNSIGNED (type1
) != TYPE_UNSIGNED (type2
)
4022 || TYPE_NOSIGN (type1
) != TYPE_NOSIGN (type2
)
4023 || TYPE_ENDIANITY_NOT_DEFAULT (type1
) != TYPE_ENDIANITY_NOT_DEFAULT (type2
)
4024 || TYPE_VARARGS (type1
) != TYPE_VARARGS (type2
)
4025 || TYPE_VECTOR (type1
) != TYPE_VECTOR (type2
)
4026 || TYPE_NOTTEXT (type1
) != TYPE_NOTTEXT (type2
)
4027 || TYPE_INSTANCE_FLAGS (type1
) != TYPE_INSTANCE_FLAGS (type2
)
4028 || type1
->num_fields () != type2
->num_fields ())
4031 if (!compare_maybe_null_strings (type1
->name (), type2
->name ()))
4033 if (!compare_maybe_null_strings (type1
->name (), type2
->name ()))
4036 if (type1
->code () == TYPE_CODE_RANGE
)
4038 if (*type1
->bounds () != *type2
->bounds ())
4045 for (i
= 0; i
< type1
->num_fields (); ++i
)
4047 const struct field
*field1
= &type1
->field (i
);
4048 const struct field
*field2
= &type2
->field (i
);
4050 if (FIELD_ARTIFICIAL (*field1
) != FIELD_ARTIFICIAL (*field2
)
4051 || FIELD_BITSIZE (*field1
) != FIELD_BITSIZE (*field2
)
4052 || FIELD_LOC_KIND (*field1
) != FIELD_LOC_KIND (*field2
))
4054 if (!compare_maybe_null_strings (FIELD_NAME (*field1
),
4055 FIELD_NAME (*field2
)))
4057 switch (FIELD_LOC_KIND (*field1
))
4059 case FIELD_LOC_KIND_BITPOS
:
4060 if (FIELD_BITPOS (*field1
) != FIELD_BITPOS (*field2
))
4063 case FIELD_LOC_KIND_ENUMVAL
:
4064 if (FIELD_ENUMVAL (*field1
) != FIELD_ENUMVAL (*field2
))
4067 case FIELD_LOC_KIND_PHYSADDR
:
4068 if (FIELD_STATIC_PHYSADDR (*field1
)
4069 != FIELD_STATIC_PHYSADDR (*field2
))
4072 case FIELD_LOC_KIND_PHYSNAME
:
4073 if (!compare_maybe_null_strings (FIELD_STATIC_PHYSNAME (*field1
),
4074 FIELD_STATIC_PHYSNAME (*field2
)))
4077 case FIELD_LOC_KIND_DWARF_BLOCK
:
4079 struct dwarf2_locexpr_baton
*block1
, *block2
;
4081 block1
= FIELD_DWARF_BLOCK (*field1
);
4082 block2
= FIELD_DWARF_BLOCK (*field2
);
4083 if (block1
->per_cu
!= block2
->per_cu
4084 || block1
->size
!= block2
->size
4085 || memcmp (block1
->data
, block2
->data
, block1
->size
) != 0)
4090 internal_error (__FILE__
, __LINE__
, _("Unsupported field kind "
4091 "%d by check_types_equal"),
4092 FIELD_LOC_KIND (*field1
));
4095 worklist
->emplace_back (field1
->type (), field2
->type ());
4099 if (TYPE_TARGET_TYPE (type1
) != NULL
)
4101 if (TYPE_TARGET_TYPE (type2
) == NULL
)
4104 worklist
->emplace_back (TYPE_TARGET_TYPE (type1
),
4105 TYPE_TARGET_TYPE (type2
));
4107 else if (TYPE_TARGET_TYPE (type2
) != NULL
)
4113 /* Check types on a worklist for equality. Returns false if any pair
4114 is not equal, true if they are all considered equal. */
4117 check_types_worklist (std::vector
<type_equality_entry
> *worklist
,
4120 while (!worklist
->empty ())
4124 struct type_equality_entry entry
= std::move (worklist
->back ());
4125 worklist
->pop_back ();
4127 /* If the type pair has already been visited, we know it is
4129 cache
->insert (&entry
, sizeof (entry
), &added
);
4133 if (!check_types_equal (entry
.type1
, entry
.type2
, worklist
))
4140 /* Return true if types TYPE1 and TYPE2 are equal, as determined by a
4141 "deep comparison". Otherwise return false. */
4144 types_deeply_equal (struct type
*type1
, struct type
*type2
)
4146 std::vector
<type_equality_entry
> worklist
;
4148 gdb_assert (type1
!= NULL
&& type2
!= NULL
);
4150 /* Early exit for the simple case. */
4154 gdb::bcache
cache (nullptr, nullptr);
4155 worklist
.emplace_back (type1
, type2
);
4156 return check_types_worklist (&worklist
, &cache
);
4159 /* Allocated status of type TYPE. Return zero if type TYPE is allocated.
4160 Otherwise return one. */
4163 type_not_allocated (const struct type
*type
)
4165 struct dynamic_prop
*prop
= TYPE_ALLOCATED_PROP (type
);
4167 return (prop
&& TYPE_DYN_PROP_KIND (prop
) == PROP_CONST
4168 && !TYPE_DYN_PROP_ADDR (prop
));
4171 /* Associated status of type TYPE. Return zero if type TYPE is associated.
4172 Otherwise return one. */
4175 type_not_associated (const struct type
*type
)
4177 struct dynamic_prop
*prop
= TYPE_ASSOCIATED_PROP (type
);
4179 return (prop
&& TYPE_DYN_PROP_KIND (prop
) == PROP_CONST
4180 && !TYPE_DYN_PROP_ADDR (prop
));
4183 /* rank_one_type helper for when PARM's type code is TYPE_CODE_PTR. */
4186 rank_one_type_parm_ptr (struct type
*parm
, struct type
*arg
, struct value
*value
)
4188 struct rank rank
= {0,0};
4190 switch (arg
->code ())
4194 /* Allowed pointer conversions are:
4195 (a) pointer to void-pointer conversion. */
4196 if (TYPE_TARGET_TYPE (parm
)->code () == TYPE_CODE_VOID
)
4197 return VOID_PTR_CONVERSION_BADNESS
;
4199 /* (b) pointer to ancestor-pointer conversion. */
4200 rank
.subrank
= distance_to_ancestor (TYPE_TARGET_TYPE (parm
),
4201 TYPE_TARGET_TYPE (arg
),
4203 if (rank
.subrank
>= 0)
4204 return sum_ranks (BASE_PTR_CONVERSION_BADNESS
, rank
);
4206 return INCOMPATIBLE_TYPE_BADNESS
;
4207 case TYPE_CODE_ARRAY
:
4209 struct type
*t1
= TYPE_TARGET_TYPE (parm
);
4210 struct type
*t2
= TYPE_TARGET_TYPE (arg
);
4212 if (types_equal (t1
, t2
))
4214 /* Make sure they are CV equal. */
4215 if (TYPE_CONST (t1
) != TYPE_CONST (t2
))
4216 rank
.subrank
|= CV_CONVERSION_CONST
;
4217 if (TYPE_VOLATILE (t1
) != TYPE_VOLATILE (t2
))
4218 rank
.subrank
|= CV_CONVERSION_VOLATILE
;
4219 if (rank
.subrank
!= 0)
4220 return sum_ranks (CV_CONVERSION_BADNESS
, rank
);
4221 return EXACT_MATCH_BADNESS
;
4223 return INCOMPATIBLE_TYPE_BADNESS
;
4225 case TYPE_CODE_FUNC
:
4226 return rank_one_type (TYPE_TARGET_TYPE (parm
), arg
, NULL
);
4228 if (value
!= NULL
&& value_type (value
)->code () == TYPE_CODE_INT
)
4230 if (value_as_long (value
) == 0)
4232 /* Null pointer conversion: allow it to be cast to a pointer.
4233 [4.10.1 of C++ standard draft n3290] */
4234 return NULL_POINTER_CONVERSION_BADNESS
;
4238 /* If type checking is disabled, allow the conversion. */
4239 if (!strict_type_checking
)
4240 return NS_INTEGER_POINTER_CONVERSION_BADNESS
;
4244 case TYPE_CODE_ENUM
:
4245 case TYPE_CODE_FLAGS
:
4246 case TYPE_CODE_CHAR
:
4247 case TYPE_CODE_RANGE
:
4248 case TYPE_CODE_BOOL
:
4250 return INCOMPATIBLE_TYPE_BADNESS
;
4254 /* rank_one_type helper for when PARM's type code is TYPE_CODE_ARRAY. */
4257 rank_one_type_parm_array (struct type
*parm
, struct type
*arg
, struct value
*value
)
4259 switch (arg
->code ())
4262 case TYPE_CODE_ARRAY
:
4263 return rank_one_type (TYPE_TARGET_TYPE (parm
),
4264 TYPE_TARGET_TYPE (arg
), NULL
);
4266 return INCOMPATIBLE_TYPE_BADNESS
;
4270 /* rank_one_type helper for when PARM's type code is TYPE_CODE_FUNC. */
4273 rank_one_type_parm_func (struct type
*parm
, struct type
*arg
, struct value
*value
)
4275 switch (arg
->code ())
4277 case TYPE_CODE_PTR
: /* funcptr -> func */
4278 return rank_one_type (parm
, TYPE_TARGET_TYPE (arg
), NULL
);
4280 return INCOMPATIBLE_TYPE_BADNESS
;
4284 /* rank_one_type helper for when PARM's type code is TYPE_CODE_INT. */
4287 rank_one_type_parm_int (struct type
*parm
, struct type
*arg
, struct value
*value
)
4289 switch (arg
->code ())
4292 if (TYPE_LENGTH (arg
) == TYPE_LENGTH (parm
))
4294 /* Deal with signed, unsigned, and plain chars and
4295 signed and unsigned ints. */
4296 if (TYPE_NOSIGN (parm
))
4298 /* This case only for character types. */
4299 if (TYPE_NOSIGN (arg
))
4300 return EXACT_MATCH_BADNESS
; /* plain char -> plain char */
4301 else /* signed/unsigned char -> plain char */
4302 return INTEGER_CONVERSION_BADNESS
;
4304 else if (TYPE_UNSIGNED (parm
))
4306 if (TYPE_UNSIGNED (arg
))
4308 /* unsigned int -> unsigned int, or
4309 unsigned long -> unsigned long */
4310 if (integer_types_same_name_p (parm
->name (),
4312 return EXACT_MATCH_BADNESS
;
4313 else if (integer_types_same_name_p (arg
->name (),
4315 && integer_types_same_name_p (parm
->name (),
4317 /* unsigned int -> unsigned long */
4318 return INTEGER_PROMOTION_BADNESS
;
4320 /* unsigned long -> unsigned int */
4321 return INTEGER_CONVERSION_BADNESS
;
4325 if (integer_types_same_name_p (arg
->name (),
4327 && integer_types_same_name_p (parm
->name (),
4329 /* signed long -> unsigned int */
4330 return INTEGER_CONVERSION_BADNESS
;
4332 /* signed int/long -> unsigned int/long */
4333 return INTEGER_CONVERSION_BADNESS
;
4336 else if (!TYPE_NOSIGN (arg
) && !TYPE_UNSIGNED (arg
))
4338 if (integer_types_same_name_p (parm
->name (),
4340 return EXACT_MATCH_BADNESS
;
4341 else if (integer_types_same_name_p (arg
->name (),
4343 && integer_types_same_name_p (parm
->name (),
4345 return INTEGER_PROMOTION_BADNESS
;
4347 return INTEGER_CONVERSION_BADNESS
;
4350 return INTEGER_CONVERSION_BADNESS
;
4352 else if (TYPE_LENGTH (arg
) < TYPE_LENGTH (parm
))
4353 return INTEGER_PROMOTION_BADNESS
;
4355 return INTEGER_CONVERSION_BADNESS
;
4356 case TYPE_CODE_ENUM
:
4357 case TYPE_CODE_FLAGS
:
4358 case TYPE_CODE_CHAR
:
4359 case TYPE_CODE_RANGE
:
4360 case TYPE_CODE_BOOL
:
4361 if (TYPE_DECLARED_CLASS (arg
))
4362 return INCOMPATIBLE_TYPE_BADNESS
;
4363 return INTEGER_PROMOTION_BADNESS
;
4365 return INT_FLOAT_CONVERSION_BADNESS
;
4367 return NS_POINTER_CONVERSION_BADNESS
;
4369 return INCOMPATIBLE_TYPE_BADNESS
;
4373 /* rank_one_type helper for when PARM's type code is TYPE_CODE_ENUM. */
4376 rank_one_type_parm_enum (struct type
*parm
, struct type
*arg
, struct value
*value
)
4378 switch (arg
->code ())
4381 case TYPE_CODE_CHAR
:
4382 case TYPE_CODE_RANGE
:
4383 case TYPE_CODE_BOOL
:
4384 case TYPE_CODE_ENUM
:
4385 if (TYPE_DECLARED_CLASS (parm
) || TYPE_DECLARED_CLASS (arg
))
4386 return INCOMPATIBLE_TYPE_BADNESS
;
4387 return INTEGER_CONVERSION_BADNESS
;
4389 return INT_FLOAT_CONVERSION_BADNESS
;
4391 return INCOMPATIBLE_TYPE_BADNESS
;
4395 /* rank_one_type helper for when PARM's type code is TYPE_CODE_CHAR. */
4398 rank_one_type_parm_char (struct type
*parm
, struct type
*arg
, struct value
*value
)
4400 switch (arg
->code ())
4402 case TYPE_CODE_RANGE
:
4403 case TYPE_CODE_BOOL
:
4404 case TYPE_CODE_ENUM
:
4405 if (TYPE_DECLARED_CLASS (arg
))
4406 return INCOMPATIBLE_TYPE_BADNESS
;
4407 return INTEGER_CONVERSION_BADNESS
;
4409 return INT_FLOAT_CONVERSION_BADNESS
;
4411 if (TYPE_LENGTH (arg
) > TYPE_LENGTH (parm
))
4412 return INTEGER_CONVERSION_BADNESS
;
4413 else if (TYPE_LENGTH (arg
) < TYPE_LENGTH (parm
))
4414 return INTEGER_PROMOTION_BADNESS
;
4416 case TYPE_CODE_CHAR
:
4417 /* Deal with signed, unsigned, and plain chars for C++ and
4418 with int cases falling through from previous case. */
4419 if (TYPE_NOSIGN (parm
))
4421 if (TYPE_NOSIGN (arg
))
4422 return EXACT_MATCH_BADNESS
;
4424 return INTEGER_CONVERSION_BADNESS
;
4426 else if (TYPE_UNSIGNED (parm
))
4428 if (TYPE_UNSIGNED (arg
))
4429 return EXACT_MATCH_BADNESS
;
4431 return INTEGER_PROMOTION_BADNESS
;
4433 else if (!TYPE_NOSIGN (arg
) && !TYPE_UNSIGNED (arg
))
4434 return EXACT_MATCH_BADNESS
;
4436 return INTEGER_CONVERSION_BADNESS
;
4438 return INCOMPATIBLE_TYPE_BADNESS
;
4442 /* rank_one_type helper for when PARM's type code is TYPE_CODE_RANGE. */
4445 rank_one_type_parm_range (struct type
*parm
, struct type
*arg
, struct value
*value
)
4447 switch (arg
->code ())
4450 case TYPE_CODE_CHAR
:
4451 case TYPE_CODE_RANGE
:
4452 case TYPE_CODE_BOOL
:
4453 case TYPE_CODE_ENUM
:
4454 return INTEGER_CONVERSION_BADNESS
;
4456 return INT_FLOAT_CONVERSION_BADNESS
;
4458 return INCOMPATIBLE_TYPE_BADNESS
;
4462 /* rank_one_type helper for when PARM's type code is TYPE_CODE_BOOL. */
4465 rank_one_type_parm_bool (struct type
*parm
, struct type
*arg
, struct value
*value
)
4467 switch (arg
->code ())
4469 /* n3290 draft, section 4.12.1 (conv.bool):
4471 "A prvalue of arithmetic, unscoped enumeration, pointer, or
4472 pointer to member type can be converted to a prvalue of type
4473 bool. A zero value, null pointer value, or null member pointer
4474 value is converted to false; any other value is converted to
4475 true. A prvalue of type std::nullptr_t can be converted to a
4476 prvalue of type bool; the resulting value is false." */
4478 case TYPE_CODE_CHAR
:
4479 case TYPE_CODE_ENUM
:
4481 case TYPE_CODE_MEMBERPTR
:
4483 return BOOL_CONVERSION_BADNESS
;
4484 case TYPE_CODE_RANGE
:
4485 return INCOMPATIBLE_TYPE_BADNESS
;
4486 case TYPE_CODE_BOOL
:
4487 return EXACT_MATCH_BADNESS
;
4489 return INCOMPATIBLE_TYPE_BADNESS
;
4493 /* rank_one_type helper for when PARM's type code is TYPE_CODE_FLOAT. */
4496 rank_one_type_parm_float (struct type
*parm
, struct type
*arg
, struct value
*value
)
4498 switch (arg
->code ())
4501 if (TYPE_LENGTH (arg
) < TYPE_LENGTH (parm
))
4502 return FLOAT_PROMOTION_BADNESS
;
4503 else if (TYPE_LENGTH (arg
) == TYPE_LENGTH (parm
))
4504 return EXACT_MATCH_BADNESS
;
4506 return FLOAT_CONVERSION_BADNESS
;
4508 case TYPE_CODE_BOOL
:
4509 case TYPE_CODE_ENUM
:
4510 case TYPE_CODE_RANGE
:
4511 case TYPE_CODE_CHAR
:
4512 return INT_FLOAT_CONVERSION_BADNESS
;
4514 return INCOMPATIBLE_TYPE_BADNESS
;
4518 /* rank_one_type helper for when PARM's type code is TYPE_CODE_COMPLEX. */
4521 rank_one_type_parm_complex (struct type
*parm
, struct type
*arg
, struct value
*value
)
4523 switch (arg
->code ())
4524 { /* Strictly not needed for C++, but... */
4526 return FLOAT_PROMOTION_BADNESS
;
4527 case TYPE_CODE_COMPLEX
:
4528 return EXACT_MATCH_BADNESS
;
4530 return INCOMPATIBLE_TYPE_BADNESS
;
4534 /* rank_one_type helper for when PARM's type code is TYPE_CODE_STRUCT. */
4537 rank_one_type_parm_struct (struct type
*parm
, struct type
*arg
, struct value
*value
)
4539 struct rank rank
= {0, 0};
4541 switch (arg
->code ())
4543 case TYPE_CODE_STRUCT
:
4544 /* Check for derivation */
4545 rank
.subrank
= distance_to_ancestor (parm
, arg
, 0);
4546 if (rank
.subrank
>= 0)
4547 return sum_ranks (BASE_CONVERSION_BADNESS
, rank
);
4550 return INCOMPATIBLE_TYPE_BADNESS
;
4554 /* rank_one_type helper for when PARM's type code is TYPE_CODE_SET. */
4557 rank_one_type_parm_set (struct type
*parm
, struct type
*arg
, struct value
*value
)
4559 switch (arg
->code ())
4563 return rank_one_type (parm
->field (0).type (),
4564 arg
->field (0).type (), NULL
);
4566 return INCOMPATIBLE_TYPE_BADNESS
;
4570 /* Compare one type (PARM) for compatibility with another (ARG).
4571 * PARM is intended to be the parameter type of a function; and
4572 * ARG is the supplied argument's type. This function tests if
4573 * the latter can be converted to the former.
4574 * VALUE is the argument's value or NULL if none (or called recursively)
4576 * Return 0 if they are identical types;
4577 * Otherwise, return an integer which corresponds to how compatible
4578 * PARM is to ARG. The higher the return value, the worse the match.
4579 * Generally the "bad" conversions are all uniformly assigned a 100. */
4582 rank_one_type (struct type
*parm
, struct type
*arg
, struct value
*value
)
4584 struct rank rank
= {0,0};
4586 /* Resolve typedefs */
4587 if (parm
->code () == TYPE_CODE_TYPEDEF
)
4588 parm
= check_typedef (parm
);
4589 if (arg
->code () == TYPE_CODE_TYPEDEF
)
4590 arg
= check_typedef (arg
);
4592 if (TYPE_IS_REFERENCE (parm
) && value
!= NULL
)
4594 if (VALUE_LVAL (value
) == not_lval
)
4596 /* Rvalues should preferably bind to rvalue references or const
4597 lvalue references. */
4598 if (parm
->code () == TYPE_CODE_RVALUE_REF
)
4599 rank
.subrank
= REFERENCE_CONVERSION_RVALUE
;
4600 else if (TYPE_CONST (TYPE_TARGET_TYPE (parm
)))
4601 rank
.subrank
= REFERENCE_CONVERSION_CONST_LVALUE
;
4603 return INCOMPATIBLE_TYPE_BADNESS
;
4604 return sum_ranks (rank
, REFERENCE_CONVERSION_BADNESS
);
4608 /* It's illegal to pass an lvalue as an rvalue. */
4609 if (parm
->code () == TYPE_CODE_RVALUE_REF
)
4610 return INCOMPATIBLE_TYPE_BADNESS
;
4614 if (types_equal (parm
, arg
))
4616 struct type
*t1
= parm
;
4617 struct type
*t2
= arg
;
4619 /* For pointers and references, compare target type. */
4620 if (parm
->code () == TYPE_CODE_PTR
|| TYPE_IS_REFERENCE (parm
))
4622 t1
= TYPE_TARGET_TYPE (parm
);
4623 t2
= TYPE_TARGET_TYPE (arg
);
4626 /* Make sure they are CV equal, too. */
4627 if (TYPE_CONST (t1
) != TYPE_CONST (t2
))
4628 rank
.subrank
|= CV_CONVERSION_CONST
;
4629 if (TYPE_VOLATILE (t1
) != TYPE_VOLATILE (t2
))
4630 rank
.subrank
|= CV_CONVERSION_VOLATILE
;
4631 if (rank
.subrank
!= 0)
4632 return sum_ranks (CV_CONVERSION_BADNESS
, rank
);
4633 return EXACT_MATCH_BADNESS
;
4636 /* See through references, since we can almost make non-references
4639 if (TYPE_IS_REFERENCE (arg
))
4640 return (sum_ranks (rank_one_type (parm
, TYPE_TARGET_TYPE (arg
), NULL
),
4641 REFERENCE_SEE_THROUGH_BADNESS
));
4642 if (TYPE_IS_REFERENCE (parm
))
4643 return (sum_ranks (rank_one_type (TYPE_TARGET_TYPE (parm
), arg
, NULL
),
4644 REFERENCE_SEE_THROUGH_BADNESS
));
4646 /* Debugging only. */
4647 fprintf_filtered (gdb_stderr
,
4648 "------ Arg is %s [%d], parm is %s [%d]\n",
4649 arg
->name (), arg
->code (),
4650 parm
->name (), parm
->code ());
4652 /* x -> y means arg of type x being supplied for parameter of type y. */
4654 switch (parm
->code ())
4657 return rank_one_type_parm_ptr (parm
, arg
, value
);
4658 case TYPE_CODE_ARRAY
:
4659 return rank_one_type_parm_array (parm
, arg
, value
);
4660 case TYPE_CODE_FUNC
:
4661 return rank_one_type_parm_func (parm
, arg
, value
);
4663 return rank_one_type_parm_int (parm
, arg
, value
);
4664 case TYPE_CODE_ENUM
:
4665 return rank_one_type_parm_enum (parm
, arg
, value
);
4666 case TYPE_CODE_CHAR
:
4667 return rank_one_type_parm_char (parm
, arg
, value
);
4668 case TYPE_CODE_RANGE
:
4669 return rank_one_type_parm_range (parm
, arg
, value
);
4670 case TYPE_CODE_BOOL
:
4671 return rank_one_type_parm_bool (parm
, arg
, value
);
4673 return rank_one_type_parm_float (parm
, arg
, value
);
4674 case TYPE_CODE_COMPLEX
:
4675 return rank_one_type_parm_complex (parm
, arg
, value
);
4676 case TYPE_CODE_STRUCT
:
4677 return rank_one_type_parm_struct (parm
, arg
, value
);
4679 return rank_one_type_parm_set (parm
, arg
, value
);
4681 return INCOMPATIBLE_TYPE_BADNESS
;
4682 } /* switch (arg->code ()) */
4685 /* End of functions for overload resolution. */
4687 /* Routines to pretty-print types. */
4690 print_bit_vector (B_TYPE
*bits
, int nbits
)
4694 for (bitno
= 0; bitno
< nbits
; bitno
++)
4696 if ((bitno
% 8) == 0)
4698 puts_filtered (" ");
4700 if (B_TST (bits
, bitno
))
4701 printf_filtered (("1"));
4703 printf_filtered (("0"));
4707 /* Note the first arg should be the "this" pointer, we may not want to
4708 include it since we may get into a infinitely recursive
4712 print_args (struct field
*args
, int nargs
, int spaces
)
4718 for (i
= 0; i
< nargs
; i
++)
4720 printfi_filtered (spaces
, "[%d] name '%s'\n", i
,
4721 args
[i
].name
!= NULL
? args
[i
].name
: "<NULL>");
4722 recursive_dump_type (args
[i
].type (), spaces
+ 2);
4728 field_is_static (struct field
*f
)
4730 /* "static" fields are the fields whose location is not relative
4731 to the address of the enclosing struct. It would be nice to
4732 have a dedicated flag that would be set for static fields when
4733 the type is being created. But in practice, checking the field
4734 loc_kind should give us an accurate answer. */
4735 return (FIELD_LOC_KIND (*f
) == FIELD_LOC_KIND_PHYSNAME
4736 || FIELD_LOC_KIND (*f
) == FIELD_LOC_KIND_PHYSADDR
);
4740 dump_fn_fieldlists (struct type
*type
, int spaces
)
4746 printfi_filtered (spaces
, "fn_fieldlists ");
4747 gdb_print_host_address (TYPE_FN_FIELDLISTS (type
), gdb_stdout
);
4748 printf_filtered ("\n");
4749 for (method_idx
= 0; method_idx
< TYPE_NFN_FIELDS (type
); method_idx
++)
4751 f
= TYPE_FN_FIELDLIST1 (type
, method_idx
);
4752 printfi_filtered (spaces
+ 2, "[%d] name '%s' (",
4754 TYPE_FN_FIELDLIST_NAME (type
, method_idx
));
4755 gdb_print_host_address (TYPE_FN_FIELDLIST_NAME (type
, method_idx
),
4757 printf_filtered (_(") length %d\n"),
4758 TYPE_FN_FIELDLIST_LENGTH (type
, method_idx
));
4759 for (overload_idx
= 0;
4760 overload_idx
< TYPE_FN_FIELDLIST_LENGTH (type
, method_idx
);
4763 printfi_filtered (spaces
+ 4, "[%d] physname '%s' (",
4765 TYPE_FN_FIELD_PHYSNAME (f
, overload_idx
));
4766 gdb_print_host_address (TYPE_FN_FIELD_PHYSNAME (f
, overload_idx
),
4768 printf_filtered (")\n");
4769 printfi_filtered (spaces
+ 8, "type ");
4770 gdb_print_host_address (TYPE_FN_FIELD_TYPE (f
, overload_idx
),
4772 printf_filtered ("\n");
4774 recursive_dump_type (TYPE_FN_FIELD_TYPE (f
, overload_idx
),
4777 printfi_filtered (spaces
+ 8, "args ");
4778 gdb_print_host_address (TYPE_FN_FIELD_ARGS (f
, overload_idx
),
4780 printf_filtered ("\n");
4781 print_args (TYPE_FN_FIELD_ARGS (f
, overload_idx
),
4782 TYPE_FN_FIELD_TYPE (f
, overload_idx
)->num_fields (),
4784 printfi_filtered (spaces
+ 8, "fcontext ");
4785 gdb_print_host_address (TYPE_FN_FIELD_FCONTEXT (f
, overload_idx
),
4787 printf_filtered ("\n");
4789 printfi_filtered (spaces
+ 8, "is_const %d\n",
4790 TYPE_FN_FIELD_CONST (f
, overload_idx
));
4791 printfi_filtered (spaces
+ 8, "is_volatile %d\n",
4792 TYPE_FN_FIELD_VOLATILE (f
, overload_idx
));
4793 printfi_filtered (spaces
+ 8, "is_private %d\n",
4794 TYPE_FN_FIELD_PRIVATE (f
, overload_idx
));
4795 printfi_filtered (spaces
+ 8, "is_protected %d\n",
4796 TYPE_FN_FIELD_PROTECTED (f
, overload_idx
));
4797 printfi_filtered (spaces
+ 8, "is_stub %d\n",
4798 TYPE_FN_FIELD_STUB (f
, overload_idx
));
4799 printfi_filtered (spaces
+ 8, "defaulted %d\n",
4800 TYPE_FN_FIELD_DEFAULTED (f
, overload_idx
));
4801 printfi_filtered (spaces
+ 8, "is_deleted %d\n",
4802 TYPE_FN_FIELD_DELETED (f
, overload_idx
));
4803 printfi_filtered (spaces
+ 8, "voffset %u\n",
4804 TYPE_FN_FIELD_VOFFSET (f
, overload_idx
));
4810 print_cplus_stuff (struct type
*type
, int spaces
)
4812 printfi_filtered (spaces
, "vptr_fieldno %d\n", TYPE_VPTR_FIELDNO (type
));
4813 printfi_filtered (spaces
, "vptr_basetype ");
4814 gdb_print_host_address (TYPE_VPTR_BASETYPE (type
), gdb_stdout
);
4815 puts_filtered ("\n");
4816 if (TYPE_VPTR_BASETYPE (type
) != NULL
)
4817 recursive_dump_type (TYPE_VPTR_BASETYPE (type
), spaces
+ 2);
4819 printfi_filtered (spaces
, "n_baseclasses %d\n",
4820 TYPE_N_BASECLASSES (type
));
4821 printfi_filtered (spaces
, "nfn_fields %d\n",
4822 TYPE_NFN_FIELDS (type
));
4823 if (TYPE_N_BASECLASSES (type
) > 0)
4825 printfi_filtered (spaces
, "virtual_field_bits (%d bits at *",
4826 TYPE_N_BASECLASSES (type
));
4827 gdb_print_host_address (TYPE_FIELD_VIRTUAL_BITS (type
),
4829 printf_filtered (")");
4831 print_bit_vector (TYPE_FIELD_VIRTUAL_BITS (type
),
4832 TYPE_N_BASECLASSES (type
));
4833 puts_filtered ("\n");
4835 if (type
->num_fields () > 0)
4837 if (TYPE_FIELD_PRIVATE_BITS (type
) != NULL
)
4839 printfi_filtered (spaces
,
4840 "private_field_bits (%d bits at *",
4841 type
->num_fields ());
4842 gdb_print_host_address (TYPE_FIELD_PRIVATE_BITS (type
),
4844 printf_filtered (")");
4845 print_bit_vector (TYPE_FIELD_PRIVATE_BITS (type
),
4846 type
->num_fields ());
4847 puts_filtered ("\n");
4849 if (TYPE_FIELD_PROTECTED_BITS (type
) != NULL
)
4851 printfi_filtered (spaces
,
4852 "protected_field_bits (%d bits at *",
4853 type
->num_fields ());
4854 gdb_print_host_address (TYPE_FIELD_PROTECTED_BITS (type
),
4856 printf_filtered (")");
4857 print_bit_vector (TYPE_FIELD_PROTECTED_BITS (type
),
4858 type
->num_fields ());
4859 puts_filtered ("\n");
4862 if (TYPE_NFN_FIELDS (type
) > 0)
4864 dump_fn_fieldlists (type
, spaces
);
4867 printfi_filtered (spaces
, "calling_convention %d\n",
4868 TYPE_CPLUS_CALLING_CONVENTION (type
));
4871 /* Print the contents of the TYPE's type_specific union, assuming that
4872 its type-specific kind is TYPE_SPECIFIC_GNAT_STUFF. */
4875 print_gnat_stuff (struct type
*type
, int spaces
)
4877 struct type
*descriptive_type
= TYPE_DESCRIPTIVE_TYPE (type
);
4879 if (descriptive_type
== NULL
)
4880 printfi_filtered (spaces
+ 2, "no descriptive type\n");
4883 printfi_filtered (spaces
+ 2, "descriptive type\n");
4884 recursive_dump_type (descriptive_type
, spaces
+ 4);
4888 static struct obstack dont_print_type_obstack
;
4891 recursive_dump_type (struct type
*type
, int spaces
)
4896 obstack_begin (&dont_print_type_obstack
, 0);
4898 if (type
->num_fields () > 0
4899 || (HAVE_CPLUS_STRUCT (type
) && TYPE_NFN_FIELDS (type
) > 0))
4901 struct type
**first_dont_print
4902 = (struct type
**) obstack_base (&dont_print_type_obstack
);
4904 int i
= (struct type
**)
4905 obstack_next_free (&dont_print_type_obstack
) - first_dont_print
;
4909 if (type
== first_dont_print
[i
])
4911 printfi_filtered (spaces
, "type node ");
4912 gdb_print_host_address (type
, gdb_stdout
);
4913 printf_filtered (_(" <same as already seen type>\n"));
4918 obstack_ptr_grow (&dont_print_type_obstack
, type
);
4921 printfi_filtered (spaces
, "type node ");
4922 gdb_print_host_address (type
, gdb_stdout
);
4923 printf_filtered ("\n");
4924 printfi_filtered (spaces
, "name '%s' (",
4925 type
->name () ? type
->name () : "<NULL>");
4926 gdb_print_host_address (type
->name (), gdb_stdout
);
4927 printf_filtered (")\n");
4928 printfi_filtered (spaces
, "code 0x%x ", type
->code ());
4929 switch (type
->code ())
4931 case TYPE_CODE_UNDEF
:
4932 printf_filtered ("(TYPE_CODE_UNDEF)");
4935 printf_filtered ("(TYPE_CODE_PTR)");
4937 case TYPE_CODE_ARRAY
:
4938 printf_filtered ("(TYPE_CODE_ARRAY)");
4940 case TYPE_CODE_STRUCT
:
4941 printf_filtered ("(TYPE_CODE_STRUCT)");
4943 case TYPE_CODE_UNION
:
4944 printf_filtered ("(TYPE_CODE_UNION)");
4946 case TYPE_CODE_ENUM
:
4947 printf_filtered ("(TYPE_CODE_ENUM)");
4949 case TYPE_CODE_FLAGS
:
4950 printf_filtered ("(TYPE_CODE_FLAGS)");
4952 case TYPE_CODE_FUNC
:
4953 printf_filtered ("(TYPE_CODE_FUNC)");
4956 printf_filtered ("(TYPE_CODE_INT)");
4959 printf_filtered ("(TYPE_CODE_FLT)");
4961 case TYPE_CODE_VOID
:
4962 printf_filtered ("(TYPE_CODE_VOID)");
4965 printf_filtered ("(TYPE_CODE_SET)");
4967 case TYPE_CODE_RANGE
:
4968 printf_filtered ("(TYPE_CODE_RANGE)");
4970 case TYPE_CODE_STRING
:
4971 printf_filtered ("(TYPE_CODE_STRING)");
4973 case TYPE_CODE_ERROR
:
4974 printf_filtered ("(TYPE_CODE_ERROR)");
4976 case TYPE_CODE_MEMBERPTR
:
4977 printf_filtered ("(TYPE_CODE_MEMBERPTR)");
4979 case TYPE_CODE_METHODPTR
:
4980 printf_filtered ("(TYPE_CODE_METHODPTR)");
4982 case TYPE_CODE_METHOD
:
4983 printf_filtered ("(TYPE_CODE_METHOD)");
4986 printf_filtered ("(TYPE_CODE_REF)");
4988 case TYPE_CODE_CHAR
:
4989 printf_filtered ("(TYPE_CODE_CHAR)");
4991 case TYPE_CODE_BOOL
:
4992 printf_filtered ("(TYPE_CODE_BOOL)");
4994 case TYPE_CODE_COMPLEX
:
4995 printf_filtered ("(TYPE_CODE_COMPLEX)");
4997 case TYPE_CODE_TYPEDEF
:
4998 printf_filtered ("(TYPE_CODE_TYPEDEF)");
5000 case TYPE_CODE_NAMESPACE
:
5001 printf_filtered ("(TYPE_CODE_NAMESPACE)");
5004 printf_filtered ("(UNKNOWN TYPE CODE)");
5007 puts_filtered ("\n");
5008 printfi_filtered (spaces
, "length %s\n", pulongest (TYPE_LENGTH (type
)));
5009 if (TYPE_OBJFILE_OWNED (type
))
5011 printfi_filtered (spaces
, "objfile ");
5012 gdb_print_host_address (TYPE_OWNER (type
).objfile
, gdb_stdout
);
5016 printfi_filtered (spaces
, "gdbarch ");
5017 gdb_print_host_address (TYPE_OWNER (type
).gdbarch
, gdb_stdout
);
5019 printf_filtered ("\n");
5020 printfi_filtered (spaces
, "target_type ");
5021 gdb_print_host_address (TYPE_TARGET_TYPE (type
), gdb_stdout
);
5022 printf_filtered ("\n");
5023 if (TYPE_TARGET_TYPE (type
) != NULL
)
5025 recursive_dump_type (TYPE_TARGET_TYPE (type
), spaces
+ 2);
5027 printfi_filtered (spaces
, "pointer_type ");
5028 gdb_print_host_address (TYPE_POINTER_TYPE (type
), gdb_stdout
);
5029 printf_filtered ("\n");
5030 printfi_filtered (spaces
, "reference_type ");
5031 gdb_print_host_address (TYPE_REFERENCE_TYPE (type
), gdb_stdout
);
5032 printf_filtered ("\n");
5033 printfi_filtered (spaces
, "type_chain ");
5034 gdb_print_host_address (TYPE_CHAIN (type
), gdb_stdout
);
5035 printf_filtered ("\n");
5036 printfi_filtered (spaces
, "instance_flags 0x%x",
5037 TYPE_INSTANCE_FLAGS (type
));
5038 if (TYPE_CONST (type
))
5040 puts_filtered (" TYPE_CONST");
5042 if (TYPE_VOLATILE (type
))
5044 puts_filtered (" TYPE_VOLATILE");
5046 if (TYPE_CODE_SPACE (type
))
5048 puts_filtered (" TYPE_CODE_SPACE");
5050 if (TYPE_DATA_SPACE (type
))
5052 puts_filtered (" TYPE_DATA_SPACE");
5054 if (TYPE_ADDRESS_CLASS_1 (type
))
5056 puts_filtered (" TYPE_ADDRESS_CLASS_1");
5058 if (TYPE_ADDRESS_CLASS_2 (type
))
5060 puts_filtered (" TYPE_ADDRESS_CLASS_2");
5062 if (TYPE_RESTRICT (type
))
5064 puts_filtered (" TYPE_RESTRICT");
5066 if (TYPE_ATOMIC (type
))
5068 puts_filtered (" TYPE_ATOMIC");
5070 puts_filtered ("\n");
5072 printfi_filtered (spaces
, "flags");
5073 if (TYPE_UNSIGNED (type
))
5075 puts_filtered (" TYPE_UNSIGNED");
5077 if (TYPE_NOSIGN (type
))
5079 puts_filtered (" TYPE_NOSIGN");
5081 if (TYPE_ENDIANITY_NOT_DEFAULT (type
))
5083 puts_filtered (" TYPE_ENDIANITY_NOT_DEFAULT");
5085 if (TYPE_STUB (type
))
5087 puts_filtered (" TYPE_STUB");
5089 if (TYPE_TARGET_STUB (type
))
5091 puts_filtered (" TYPE_TARGET_STUB");
5093 if (TYPE_PROTOTYPED (type
))
5095 puts_filtered (" TYPE_PROTOTYPED");
5097 if (TYPE_VARARGS (type
))
5099 puts_filtered (" TYPE_VARARGS");
5101 /* This is used for things like AltiVec registers on ppc. Gcc emits
5102 an attribute for the array type, which tells whether or not we
5103 have a vector, instead of a regular array. */
5104 if (TYPE_VECTOR (type
))
5106 puts_filtered (" TYPE_VECTOR");
5108 if (TYPE_FIXED_INSTANCE (type
))
5110 puts_filtered (" TYPE_FIXED_INSTANCE");
5112 if (TYPE_STUB_SUPPORTED (type
))
5114 puts_filtered (" TYPE_STUB_SUPPORTED");
5116 if (TYPE_NOTTEXT (type
))
5118 puts_filtered (" TYPE_NOTTEXT");
5120 puts_filtered ("\n");
5121 printfi_filtered (spaces
, "nfields %d ", type
->num_fields ());
5122 gdb_print_host_address (type
->fields (), gdb_stdout
);
5123 puts_filtered ("\n");
5124 for (idx
= 0; idx
< type
->num_fields (); idx
++)
5126 if (type
->code () == TYPE_CODE_ENUM
)
5127 printfi_filtered (spaces
+ 2,
5128 "[%d] enumval %s type ",
5129 idx
, plongest (TYPE_FIELD_ENUMVAL (type
, idx
)));
5131 printfi_filtered (spaces
+ 2,
5132 "[%d] bitpos %s bitsize %d type ",
5133 idx
, plongest (TYPE_FIELD_BITPOS (type
, idx
)),
5134 TYPE_FIELD_BITSIZE (type
, idx
));
5135 gdb_print_host_address (type
->field (idx
).type (), gdb_stdout
);
5136 printf_filtered (" name '%s' (",
5137 TYPE_FIELD_NAME (type
, idx
) != NULL
5138 ? TYPE_FIELD_NAME (type
, idx
)
5140 gdb_print_host_address (TYPE_FIELD_NAME (type
, idx
), gdb_stdout
);
5141 printf_filtered (")\n");
5142 if (type
->field (idx
).type () != NULL
)
5144 recursive_dump_type (type
->field (idx
).type (), spaces
+ 4);
5147 if (type
->code () == TYPE_CODE_RANGE
)
5149 printfi_filtered (spaces
, "low %s%s high %s%s\n",
5150 plongest (TYPE_LOW_BOUND (type
)),
5151 TYPE_LOW_BOUND_UNDEFINED (type
) ? " (undefined)" : "",
5152 plongest (TYPE_HIGH_BOUND (type
)),
5153 TYPE_HIGH_BOUND_UNDEFINED (type
)
5154 ? " (undefined)" : "");
5157 switch (TYPE_SPECIFIC_FIELD (type
))
5159 case TYPE_SPECIFIC_CPLUS_STUFF
:
5160 printfi_filtered (spaces
, "cplus_stuff ");
5161 gdb_print_host_address (TYPE_CPLUS_SPECIFIC (type
),
5163 puts_filtered ("\n");
5164 print_cplus_stuff (type
, spaces
);
5167 case TYPE_SPECIFIC_GNAT_STUFF
:
5168 printfi_filtered (spaces
, "gnat_stuff ");
5169 gdb_print_host_address (TYPE_GNAT_SPECIFIC (type
), gdb_stdout
);
5170 puts_filtered ("\n");
5171 print_gnat_stuff (type
, spaces
);
5174 case TYPE_SPECIFIC_FLOATFORMAT
:
5175 printfi_filtered (spaces
, "floatformat ");
5176 if (TYPE_FLOATFORMAT (type
) == NULL
5177 || TYPE_FLOATFORMAT (type
)->name
== NULL
)
5178 puts_filtered ("(null)");
5180 puts_filtered (TYPE_FLOATFORMAT (type
)->name
);
5181 puts_filtered ("\n");
5184 case TYPE_SPECIFIC_FUNC
:
5185 printfi_filtered (spaces
, "calling_convention %d\n",
5186 TYPE_CALLING_CONVENTION (type
));
5187 /* tail_call_list is not printed. */
5190 case TYPE_SPECIFIC_SELF_TYPE
:
5191 printfi_filtered (spaces
, "self_type ");
5192 gdb_print_host_address (TYPE_SELF_TYPE (type
), gdb_stdout
);
5193 puts_filtered ("\n");
5198 obstack_free (&dont_print_type_obstack
, NULL
);
5201 /* Trivial helpers for the libiberty hash table, for mapping one
5204 struct type_pair
: public allocate_on_obstack
5206 type_pair (struct type
*old_
, struct type
*newobj_
)
5207 : old (old_
), newobj (newobj_
)
5210 struct type
* const old
, * const newobj
;
5214 type_pair_hash (const void *item
)
5216 const struct type_pair
*pair
= (const struct type_pair
*) item
;
5218 return htab_hash_pointer (pair
->old
);
5222 type_pair_eq (const void *item_lhs
, const void *item_rhs
)
5224 const struct type_pair
*lhs
= (const struct type_pair
*) item_lhs
;
5225 const struct type_pair
*rhs
= (const struct type_pair
*) item_rhs
;
5227 return lhs
->old
== rhs
->old
;
5230 /* Allocate the hash table used by copy_type_recursive to walk
5231 types without duplicates. We use OBJFILE's obstack, because
5232 OBJFILE is about to be deleted. */
5235 create_copied_types_hash (struct objfile
*objfile
)
5237 return htab_create_alloc_ex (1, type_pair_hash
, type_pair_eq
,
5238 NULL
, &objfile
->objfile_obstack
,
5239 hashtab_obstack_allocate
,
5240 dummy_obstack_deallocate
);
5243 /* Recursively copy (deep copy) a dynamic attribute list of a type. */
5245 static struct dynamic_prop_list
*
5246 copy_dynamic_prop_list (struct obstack
*objfile_obstack
,
5247 struct dynamic_prop_list
*list
)
5249 struct dynamic_prop_list
*copy
= list
;
5250 struct dynamic_prop_list
**node_ptr
= ©
;
5252 while (*node_ptr
!= NULL
)
5254 struct dynamic_prop_list
*node_copy
;
5256 node_copy
= ((struct dynamic_prop_list
*)
5257 obstack_copy (objfile_obstack
, *node_ptr
,
5258 sizeof (struct dynamic_prop_list
)));
5259 node_copy
->prop
= (*node_ptr
)->prop
;
5260 *node_ptr
= node_copy
;
5262 node_ptr
= &node_copy
->next
;
5268 /* Recursively copy (deep copy) TYPE, if it is associated with
5269 OBJFILE. Return a new type owned by the gdbarch associated with the type, a
5270 saved type if we have already visited TYPE (using COPIED_TYPES), or TYPE if
5271 it is not associated with OBJFILE. */
5274 copy_type_recursive (struct objfile
*objfile
,
5276 htab_t copied_types
)
5279 struct type
*new_type
;
5281 if (! TYPE_OBJFILE_OWNED (type
))
5284 /* This type shouldn't be pointing to any types in other objfiles;
5285 if it did, the type might disappear unexpectedly. */
5286 gdb_assert (TYPE_OBJFILE (type
) == objfile
);
5288 struct type_pair
pair (type
, nullptr);
5290 slot
= htab_find_slot (copied_types
, &pair
, INSERT
);
5292 return ((struct type_pair
*) *slot
)->newobj
;
5294 new_type
= alloc_type_arch (get_type_arch (type
));
5296 /* We must add the new type to the hash table immediately, in case
5297 we encounter this type again during a recursive call below. */
5298 struct type_pair
*stored
5299 = new (&objfile
->objfile_obstack
) struct type_pair (type
, new_type
);
5303 /* Copy the common fields of types. For the main type, we simply
5304 copy the entire thing and then update specific fields as needed. */
5305 *TYPE_MAIN_TYPE (new_type
) = *TYPE_MAIN_TYPE (type
);
5306 TYPE_OBJFILE_OWNED (new_type
) = 0;
5307 TYPE_OWNER (new_type
).gdbarch
= get_type_arch (type
);
5310 new_type
->set_name (xstrdup (type
->name ()));
5312 TYPE_INSTANCE_FLAGS (new_type
) = TYPE_INSTANCE_FLAGS (type
);
5313 TYPE_LENGTH (new_type
) = TYPE_LENGTH (type
);
5315 /* Copy the fields. */
5316 if (type
->num_fields ())
5320 nfields
= type
->num_fields ();
5321 new_type
->set_fields
5323 TYPE_ZALLOC (new_type
, nfields
* sizeof (struct field
)));
5325 for (i
= 0; i
< nfields
; i
++)
5327 TYPE_FIELD_ARTIFICIAL (new_type
, i
) =
5328 TYPE_FIELD_ARTIFICIAL (type
, i
);
5329 TYPE_FIELD_BITSIZE (new_type
, i
) = TYPE_FIELD_BITSIZE (type
, i
);
5330 if (type
->field (i
).type ())
5331 new_type
->field (i
).set_type
5332 (copy_type_recursive (objfile
, type
->field (i
).type (),
5334 if (TYPE_FIELD_NAME (type
, i
))
5335 TYPE_FIELD_NAME (new_type
, i
) =
5336 xstrdup (TYPE_FIELD_NAME (type
, i
));
5337 switch (TYPE_FIELD_LOC_KIND (type
, i
))
5339 case FIELD_LOC_KIND_BITPOS
:
5340 SET_FIELD_BITPOS (new_type
->field (i
),
5341 TYPE_FIELD_BITPOS (type
, i
));
5343 case FIELD_LOC_KIND_ENUMVAL
:
5344 SET_FIELD_ENUMVAL (new_type
->field (i
),
5345 TYPE_FIELD_ENUMVAL (type
, i
));
5347 case FIELD_LOC_KIND_PHYSADDR
:
5348 SET_FIELD_PHYSADDR (new_type
->field (i
),
5349 TYPE_FIELD_STATIC_PHYSADDR (type
, i
));
5351 case FIELD_LOC_KIND_PHYSNAME
:
5352 SET_FIELD_PHYSNAME (new_type
->field (i
),
5353 xstrdup (TYPE_FIELD_STATIC_PHYSNAME (type
,
5357 internal_error (__FILE__
, __LINE__
,
5358 _("Unexpected type field location kind: %d"),
5359 TYPE_FIELD_LOC_KIND (type
, i
));
5364 /* For range types, copy the bounds information. */
5365 if (type
->code () == TYPE_CODE_RANGE
)
5367 range_bounds
*bounds
5368 = ((struct range_bounds
*) TYPE_ALLOC
5369 (new_type
, sizeof (struct range_bounds
)));
5371 *bounds
= *type
->bounds ();
5372 new_type
->set_bounds (bounds
);
5375 if (type
->main_type
->dyn_prop_list
!= NULL
)
5376 new_type
->main_type
->dyn_prop_list
5377 = copy_dynamic_prop_list (&objfile
->objfile_obstack
,
5378 type
->main_type
->dyn_prop_list
);
5381 /* Copy pointers to other types. */
5382 if (TYPE_TARGET_TYPE (type
))
5383 TYPE_TARGET_TYPE (new_type
) =
5384 copy_type_recursive (objfile
,
5385 TYPE_TARGET_TYPE (type
),
5388 /* Maybe copy the type_specific bits.
5390 NOTE drow/2005-12-09: We do not copy the C++-specific bits like
5391 base classes and methods. There's no fundamental reason why we
5392 can't, but at the moment it is not needed. */
5394 switch (TYPE_SPECIFIC_FIELD (type
))
5396 case TYPE_SPECIFIC_NONE
:
5398 case TYPE_SPECIFIC_FUNC
:
5399 INIT_FUNC_SPECIFIC (new_type
);
5400 TYPE_CALLING_CONVENTION (new_type
) = TYPE_CALLING_CONVENTION (type
);
5401 TYPE_NO_RETURN (new_type
) = TYPE_NO_RETURN (type
);
5402 TYPE_TAIL_CALL_LIST (new_type
) = NULL
;
5404 case TYPE_SPECIFIC_FLOATFORMAT
:
5405 TYPE_FLOATFORMAT (new_type
) = TYPE_FLOATFORMAT (type
);
5407 case TYPE_SPECIFIC_CPLUS_STUFF
:
5408 INIT_CPLUS_SPECIFIC (new_type
);
5410 case TYPE_SPECIFIC_GNAT_STUFF
:
5411 INIT_GNAT_SPECIFIC (new_type
);
5413 case TYPE_SPECIFIC_SELF_TYPE
:
5414 set_type_self_type (new_type
,
5415 copy_type_recursive (objfile
, TYPE_SELF_TYPE (type
),
5419 gdb_assert_not_reached ("bad type_specific_kind");
5425 /* Make a copy of the given TYPE, except that the pointer & reference
5426 types are not preserved.
5428 This function assumes that the given type has an associated objfile.
5429 This objfile is used to allocate the new type. */
5432 copy_type (const struct type
*type
)
5434 struct type
*new_type
;
5436 gdb_assert (TYPE_OBJFILE_OWNED (type
));
5438 new_type
= alloc_type_copy (type
);
5439 TYPE_INSTANCE_FLAGS (new_type
) = TYPE_INSTANCE_FLAGS (type
);
5440 TYPE_LENGTH (new_type
) = TYPE_LENGTH (type
);
5441 memcpy (TYPE_MAIN_TYPE (new_type
), TYPE_MAIN_TYPE (type
),
5442 sizeof (struct main_type
));
5443 if (type
->main_type
->dyn_prop_list
!= NULL
)
5444 new_type
->main_type
->dyn_prop_list
5445 = copy_dynamic_prop_list (&TYPE_OBJFILE (type
) -> objfile_obstack
,
5446 type
->main_type
->dyn_prop_list
);
5451 /* Helper functions to initialize architecture-specific types. */
5453 /* Allocate a type structure associated with GDBARCH and set its
5454 CODE, LENGTH, and NAME fields. */
5457 arch_type (struct gdbarch
*gdbarch
,
5458 enum type_code code
, int bit
, const char *name
)
5462 type
= alloc_type_arch (gdbarch
);
5463 set_type_code (type
, code
);
5464 gdb_assert ((bit
% TARGET_CHAR_BIT
) == 0);
5465 TYPE_LENGTH (type
) = bit
/ TARGET_CHAR_BIT
;
5468 type
->set_name (gdbarch_obstack_strdup (gdbarch
, name
));
5473 /* Allocate a TYPE_CODE_INT type structure associated with GDBARCH.
5474 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
5475 the type's TYPE_UNSIGNED flag. NAME is the type name. */
5478 arch_integer_type (struct gdbarch
*gdbarch
,
5479 int bit
, int unsigned_p
, const char *name
)
5483 t
= arch_type (gdbarch
, TYPE_CODE_INT
, bit
, name
);
5485 TYPE_UNSIGNED (t
) = 1;
5490 /* Allocate a TYPE_CODE_CHAR type structure associated with GDBARCH.
5491 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
5492 the type's TYPE_UNSIGNED flag. NAME is the type name. */
5495 arch_character_type (struct gdbarch
*gdbarch
,
5496 int bit
, int unsigned_p
, const char *name
)
5500 t
= arch_type (gdbarch
, TYPE_CODE_CHAR
, bit
, name
);
5502 TYPE_UNSIGNED (t
) = 1;
5507 /* Allocate a TYPE_CODE_BOOL type structure associated with GDBARCH.
5508 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
5509 the type's TYPE_UNSIGNED flag. NAME is the type name. */
5512 arch_boolean_type (struct gdbarch
*gdbarch
,
5513 int bit
, int unsigned_p
, const char *name
)
5517 t
= arch_type (gdbarch
, TYPE_CODE_BOOL
, bit
, name
);
5519 TYPE_UNSIGNED (t
) = 1;
5524 /* Allocate a TYPE_CODE_FLT type structure associated with GDBARCH.
5525 BIT is the type size in bits; if BIT equals -1, the size is
5526 determined by the floatformat. NAME is the type name. Set the
5527 TYPE_FLOATFORMAT from FLOATFORMATS. */
5530 arch_float_type (struct gdbarch
*gdbarch
,
5531 int bit
, const char *name
,
5532 const struct floatformat
**floatformats
)
5534 const struct floatformat
*fmt
= floatformats
[gdbarch_byte_order (gdbarch
)];
5537 bit
= verify_floatformat (bit
, fmt
);
5538 t
= arch_type (gdbarch
, TYPE_CODE_FLT
, bit
, name
);
5539 TYPE_FLOATFORMAT (t
) = fmt
;
5544 /* Allocate a TYPE_CODE_DECFLOAT type structure associated with GDBARCH.
5545 BIT is the type size in bits. NAME is the type name. */
5548 arch_decfloat_type (struct gdbarch
*gdbarch
, int bit
, const char *name
)
5552 t
= arch_type (gdbarch
, TYPE_CODE_DECFLOAT
, bit
, name
);
5556 /* Allocate a TYPE_CODE_PTR type structure associated with GDBARCH.
5557 BIT is the pointer type size in bits. NAME is the type name.
5558 TARGET_TYPE is the pointer target type. Always sets the pointer type's
5559 TYPE_UNSIGNED flag. */
5562 arch_pointer_type (struct gdbarch
*gdbarch
,
5563 int bit
, const char *name
, struct type
*target_type
)
5567 t
= arch_type (gdbarch
, TYPE_CODE_PTR
, bit
, name
);
5568 TYPE_TARGET_TYPE (t
) = target_type
;
5569 TYPE_UNSIGNED (t
) = 1;
5573 /* Allocate a TYPE_CODE_FLAGS type structure associated with GDBARCH.
5574 NAME is the type name. BIT is the size of the flag word in bits. */
5577 arch_flags_type (struct gdbarch
*gdbarch
, const char *name
, int bit
)
5581 type
= arch_type (gdbarch
, TYPE_CODE_FLAGS
, bit
, name
);
5582 TYPE_UNSIGNED (type
) = 1;
5583 type
->set_num_fields (0);
5584 /* Pre-allocate enough space assuming every field is one bit. */
5586 ((struct field
*) TYPE_ZALLOC (type
, bit
* sizeof (struct field
)));
5591 /* Add field to TYPE_CODE_FLAGS type TYPE to indicate the bit at
5592 position BITPOS is called NAME. Pass NAME as "" for fields that
5593 should not be printed. */
5596 append_flags_type_field (struct type
*type
, int start_bitpos
, int nr_bits
,
5597 struct type
*field_type
, const char *name
)
5599 int type_bitsize
= TYPE_LENGTH (type
) * TARGET_CHAR_BIT
;
5600 int field_nr
= type
->num_fields ();
5602 gdb_assert (type
->code () == TYPE_CODE_FLAGS
);
5603 gdb_assert (type
->num_fields () + 1 <= type_bitsize
);
5604 gdb_assert (start_bitpos
>= 0 && start_bitpos
< type_bitsize
);
5605 gdb_assert (nr_bits
>= 1 && nr_bits
<= type_bitsize
);
5606 gdb_assert (name
!= NULL
);
5608 TYPE_FIELD_NAME (type
, field_nr
) = xstrdup (name
);
5609 type
->field (field_nr
).set_type (field_type
);
5610 SET_FIELD_BITPOS (type
->field (field_nr
), start_bitpos
);
5611 TYPE_FIELD_BITSIZE (type
, field_nr
) = nr_bits
;
5612 type
->set_num_fields (type
->num_fields () + 1);
5615 /* Special version of append_flags_type_field to add a flag field.
5616 Add field to TYPE_CODE_FLAGS type TYPE to indicate the bit at
5617 position BITPOS is called NAME. */
5620 append_flags_type_flag (struct type
*type
, int bitpos
, const char *name
)
5622 struct gdbarch
*gdbarch
= get_type_arch (type
);
5624 append_flags_type_field (type
, bitpos
, 1,
5625 builtin_type (gdbarch
)->builtin_bool
,
5629 /* Allocate a TYPE_CODE_STRUCT or TYPE_CODE_UNION type structure (as
5630 specified by CODE) associated with GDBARCH. NAME is the type name. */
5633 arch_composite_type (struct gdbarch
*gdbarch
, const char *name
,
5634 enum type_code code
)
5638 gdb_assert (code
== TYPE_CODE_STRUCT
|| code
== TYPE_CODE_UNION
);
5639 t
= arch_type (gdbarch
, code
, 0, NULL
);
5641 INIT_CPLUS_SPECIFIC (t
);
5645 /* Add new field with name NAME and type FIELD to composite type T.
5646 Do not set the field's position or adjust the type's length;
5647 the caller should do so. Return the new field. */
5650 append_composite_type_field_raw (struct type
*t
, const char *name
,
5655 t
->set_num_fields (t
->num_fields () + 1);
5656 t
->set_fields (XRESIZEVEC (struct field
, t
->fields (),
5658 f
= &t
->field (t
->num_fields () - 1);
5659 memset (f
, 0, sizeof f
[0]);
5660 f
[0].set_type (field
);
5661 FIELD_NAME (f
[0]) = name
;
5665 /* Add new field with name NAME and type FIELD to composite type T.
5666 ALIGNMENT (if non-zero) specifies the minimum field alignment. */
5669 append_composite_type_field_aligned (struct type
*t
, const char *name
,
5670 struct type
*field
, int alignment
)
5672 struct field
*f
= append_composite_type_field_raw (t
, name
, field
);
5674 if (t
->code () == TYPE_CODE_UNION
)
5676 if (TYPE_LENGTH (t
) < TYPE_LENGTH (field
))
5677 TYPE_LENGTH (t
) = TYPE_LENGTH (field
);
5679 else if (t
->code () == TYPE_CODE_STRUCT
)
5681 TYPE_LENGTH (t
) = TYPE_LENGTH (t
) + TYPE_LENGTH (field
);
5682 if (t
->num_fields () > 1)
5684 SET_FIELD_BITPOS (f
[0],
5685 (FIELD_BITPOS (f
[-1])
5686 + (TYPE_LENGTH (f
[-1].type ())
5687 * TARGET_CHAR_BIT
)));
5693 alignment
*= TARGET_CHAR_BIT
;
5694 left
= FIELD_BITPOS (f
[0]) % alignment
;
5698 SET_FIELD_BITPOS (f
[0], FIELD_BITPOS (f
[0]) + (alignment
- left
));
5699 TYPE_LENGTH (t
) += (alignment
- left
) / TARGET_CHAR_BIT
;
5706 /* Add new field with name NAME and type FIELD to composite type T. */
5709 append_composite_type_field (struct type
*t
, const char *name
,
5712 append_composite_type_field_aligned (t
, name
, field
, 0);
5715 static struct gdbarch_data
*gdbtypes_data
;
5717 const struct builtin_type
*
5718 builtin_type (struct gdbarch
*gdbarch
)
5720 return (const struct builtin_type
*) gdbarch_data (gdbarch
, gdbtypes_data
);
5724 gdbtypes_post_init (struct gdbarch
*gdbarch
)
5726 struct builtin_type
*builtin_type
5727 = GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct builtin_type
);
5730 builtin_type
->builtin_void
5731 = arch_type (gdbarch
, TYPE_CODE_VOID
, TARGET_CHAR_BIT
, "void");
5732 builtin_type
->builtin_char
5733 = arch_integer_type (gdbarch
, TARGET_CHAR_BIT
,
5734 !gdbarch_char_signed (gdbarch
), "char");
5735 TYPE_NOSIGN (builtin_type
->builtin_char
) = 1;
5736 builtin_type
->builtin_signed_char
5737 = arch_integer_type (gdbarch
, TARGET_CHAR_BIT
,
5739 builtin_type
->builtin_unsigned_char
5740 = arch_integer_type (gdbarch
, TARGET_CHAR_BIT
,
5741 1, "unsigned char");
5742 builtin_type
->builtin_short
5743 = arch_integer_type (gdbarch
, gdbarch_short_bit (gdbarch
),
5745 builtin_type
->builtin_unsigned_short
5746 = arch_integer_type (gdbarch
, gdbarch_short_bit (gdbarch
),
5747 1, "unsigned short");
5748 builtin_type
->builtin_int
5749 = arch_integer_type (gdbarch
, gdbarch_int_bit (gdbarch
),
5751 builtin_type
->builtin_unsigned_int
5752 = arch_integer_type (gdbarch
, gdbarch_int_bit (gdbarch
),
5754 builtin_type
->builtin_long
5755 = arch_integer_type (gdbarch
, gdbarch_long_bit (gdbarch
),
5757 builtin_type
->builtin_unsigned_long
5758 = arch_integer_type (gdbarch
, gdbarch_long_bit (gdbarch
),
5759 1, "unsigned long");
5760 builtin_type
->builtin_long_long
5761 = arch_integer_type (gdbarch
, gdbarch_long_long_bit (gdbarch
),
5763 builtin_type
->builtin_unsigned_long_long
5764 = arch_integer_type (gdbarch
, gdbarch_long_long_bit (gdbarch
),
5765 1, "unsigned long long");
5766 builtin_type
->builtin_half
5767 = arch_float_type (gdbarch
, gdbarch_half_bit (gdbarch
),
5768 "half", gdbarch_half_format (gdbarch
));
5769 builtin_type
->builtin_float
5770 = arch_float_type (gdbarch
, gdbarch_float_bit (gdbarch
),
5771 "float", gdbarch_float_format (gdbarch
));
5772 builtin_type
->builtin_double
5773 = arch_float_type (gdbarch
, gdbarch_double_bit (gdbarch
),
5774 "double", gdbarch_double_format (gdbarch
));
5775 builtin_type
->builtin_long_double
5776 = arch_float_type (gdbarch
, gdbarch_long_double_bit (gdbarch
),
5777 "long double", gdbarch_long_double_format (gdbarch
));
5778 builtin_type
->builtin_complex
5779 = init_complex_type ("complex", builtin_type
->builtin_float
);
5780 builtin_type
->builtin_double_complex
5781 = init_complex_type ("double complex", builtin_type
->builtin_double
);
5782 builtin_type
->builtin_string
5783 = arch_type (gdbarch
, TYPE_CODE_STRING
, TARGET_CHAR_BIT
, "string");
5784 builtin_type
->builtin_bool
5785 = arch_type (gdbarch
, TYPE_CODE_BOOL
, TARGET_CHAR_BIT
, "bool");
5787 /* The following three are about decimal floating point types, which
5788 are 32-bits, 64-bits and 128-bits respectively. */
5789 builtin_type
->builtin_decfloat
5790 = arch_decfloat_type (gdbarch
, 32, "_Decimal32");
5791 builtin_type
->builtin_decdouble
5792 = arch_decfloat_type (gdbarch
, 64, "_Decimal64");
5793 builtin_type
->builtin_declong
5794 = arch_decfloat_type (gdbarch
, 128, "_Decimal128");
5796 /* "True" character types. */
5797 builtin_type
->builtin_true_char
5798 = arch_character_type (gdbarch
, TARGET_CHAR_BIT
, 0, "true character");
5799 builtin_type
->builtin_true_unsigned_char
5800 = arch_character_type (gdbarch
, TARGET_CHAR_BIT
, 1, "true character");
5802 /* Fixed-size integer types. */
5803 builtin_type
->builtin_int0
5804 = arch_integer_type (gdbarch
, 0, 0, "int0_t");
5805 builtin_type
->builtin_int8
5806 = arch_integer_type (gdbarch
, 8, 0, "int8_t");
5807 builtin_type
->builtin_uint8
5808 = arch_integer_type (gdbarch
, 8, 1, "uint8_t");
5809 builtin_type
->builtin_int16
5810 = arch_integer_type (gdbarch
, 16, 0, "int16_t");
5811 builtin_type
->builtin_uint16
5812 = arch_integer_type (gdbarch
, 16, 1, "uint16_t");
5813 builtin_type
->builtin_int24
5814 = arch_integer_type (gdbarch
, 24, 0, "int24_t");
5815 builtin_type
->builtin_uint24
5816 = arch_integer_type (gdbarch
, 24, 1, "uint24_t");
5817 builtin_type
->builtin_int32
5818 = arch_integer_type (gdbarch
, 32, 0, "int32_t");
5819 builtin_type
->builtin_uint32
5820 = arch_integer_type (gdbarch
, 32, 1, "uint32_t");
5821 builtin_type
->builtin_int64
5822 = arch_integer_type (gdbarch
, 64, 0, "int64_t");
5823 builtin_type
->builtin_uint64
5824 = arch_integer_type (gdbarch
, 64, 1, "uint64_t");
5825 builtin_type
->builtin_int128
5826 = arch_integer_type (gdbarch
, 128, 0, "int128_t");
5827 builtin_type
->builtin_uint128
5828 = arch_integer_type (gdbarch
, 128, 1, "uint128_t");
5829 TYPE_INSTANCE_FLAGS (builtin_type
->builtin_int8
) |=
5830 TYPE_INSTANCE_FLAG_NOTTEXT
;
5831 TYPE_INSTANCE_FLAGS (builtin_type
->builtin_uint8
) |=
5832 TYPE_INSTANCE_FLAG_NOTTEXT
;
5834 /* Wide character types. */
5835 builtin_type
->builtin_char16
5836 = arch_integer_type (gdbarch
, 16, 1, "char16_t");
5837 builtin_type
->builtin_char32
5838 = arch_integer_type (gdbarch
, 32, 1, "char32_t");
5839 builtin_type
->builtin_wchar
5840 = arch_integer_type (gdbarch
, gdbarch_wchar_bit (gdbarch
),
5841 !gdbarch_wchar_signed (gdbarch
), "wchar_t");
5843 /* Default data/code pointer types. */
5844 builtin_type
->builtin_data_ptr
5845 = lookup_pointer_type (builtin_type
->builtin_void
);
5846 builtin_type
->builtin_func_ptr
5847 = lookup_pointer_type (lookup_function_type (builtin_type
->builtin_void
));
5848 builtin_type
->builtin_func_func
5849 = lookup_function_type (builtin_type
->builtin_func_ptr
);
5851 /* This type represents a GDB internal function. */
5852 builtin_type
->internal_fn
5853 = arch_type (gdbarch
, TYPE_CODE_INTERNAL_FUNCTION
, 0,
5854 "<internal function>");
5856 /* This type represents an xmethod. */
5857 builtin_type
->xmethod
5858 = arch_type (gdbarch
, TYPE_CODE_XMETHOD
, 0, "<xmethod>");
5860 return builtin_type
;
5863 /* This set of objfile-based types is intended to be used by symbol
5864 readers as basic types. */
5866 static const struct objfile_key
<struct objfile_type
,
5867 gdb::noop_deleter
<struct objfile_type
>>
5870 const struct objfile_type
*
5871 objfile_type (struct objfile
*objfile
)
5873 struct gdbarch
*gdbarch
;
5874 struct objfile_type
*objfile_type
= objfile_type_data
.get (objfile
);
5877 return objfile_type
;
5879 objfile_type
= OBSTACK_CALLOC (&objfile
->objfile_obstack
,
5880 1, struct objfile_type
);
5882 /* Use the objfile architecture to determine basic type properties. */
5883 gdbarch
= objfile
->arch ();
5886 objfile_type
->builtin_void
5887 = init_type (objfile
, TYPE_CODE_VOID
, TARGET_CHAR_BIT
, "void");
5888 objfile_type
->builtin_char
5889 = init_integer_type (objfile
, TARGET_CHAR_BIT
,
5890 !gdbarch_char_signed (gdbarch
), "char");
5891 TYPE_NOSIGN (objfile_type
->builtin_char
) = 1;
5892 objfile_type
->builtin_signed_char
5893 = init_integer_type (objfile
, TARGET_CHAR_BIT
,
5895 objfile_type
->builtin_unsigned_char
5896 = init_integer_type (objfile
, TARGET_CHAR_BIT
,
5897 1, "unsigned char");
5898 objfile_type
->builtin_short
5899 = init_integer_type (objfile
, gdbarch_short_bit (gdbarch
),
5901 objfile_type
->builtin_unsigned_short
5902 = init_integer_type (objfile
, gdbarch_short_bit (gdbarch
),
5903 1, "unsigned short");
5904 objfile_type
->builtin_int
5905 = init_integer_type (objfile
, gdbarch_int_bit (gdbarch
),
5907 objfile_type
->builtin_unsigned_int
5908 = init_integer_type (objfile
, gdbarch_int_bit (gdbarch
),
5910 objfile_type
->builtin_long
5911 = init_integer_type (objfile
, gdbarch_long_bit (gdbarch
),
5913 objfile_type
->builtin_unsigned_long
5914 = init_integer_type (objfile
, gdbarch_long_bit (gdbarch
),
5915 1, "unsigned long");
5916 objfile_type
->builtin_long_long
5917 = init_integer_type (objfile
, gdbarch_long_long_bit (gdbarch
),
5919 objfile_type
->builtin_unsigned_long_long
5920 = init_integer_type (objfile
, gdbarch_long_long_bit (gdbarch
),
5921 1, "unsigned long long");
5922 objfile_type
->builtin_float
5923 = init_float_type (objfile
, gdbarch_float_bit (gdbarch
),
5924 "float", gdbarch_float_format (gdbarch
));
5925 objfile_type
->builtin_double
5926 = init_float_type (objfile
, gdbarch_double_bit (gdbarch
),
5927 "double", gdbarch_double_format (gdbarch
));
5928 objfile_type
->builtin_long_double
5929 = init_float_type (objfile
, gdbarch_long_double_bit (gdbarch
),
5930 "long double", gdbarch_long_double_format (gdbarch
));
5932 /* This type represents a type that was unrecognized in symbol read-in. */
5933 objfile_type
->builtin_error
5934 = init_type (objfile
, TYPE_CODE_ERROR
, 0, "<unknown type>");
5936 /* The following set of types is used for symbols with no
5937 debug information. */
5938 objfile_type
->nodebug_text_symbol
5939 = init_type (objfile
, TYPE_CODE_FUNC
, TARGET_CHAR_BIT
,
5940 "<text variable, no debug info>");
5941 objfile_type
->nodebug_text_gnu_ifunc_symbol
5942 = init_type (objfile
, TYPE_CODE_FUNC
, TARGET_CHAR_BIT
,
5943 "<text gnu-indirect-function variable, no debug info>");
5944 TYPE_GNU_IFUNC (objfile_type
->nodebug_text_gnu_ifunc_symbol
) = 1;
5945 objfile_type
->nodebug_got_plt_symbol
5946 = init_pointer_type (objfile
, gdbarch_addr_bit (gdbarch
),
5947 "<text from jump slot in .got.plt, no debug info>",
5948 objfile_type
->nodebug_text_symbol
);
5949 objfile_type
->nodebug_data_symbol
5950 = init_nodebug_var_type (objfile
, "<data variable, no debug info>");
5951 objfile_type
->nodebug_unknown_symbol
5952 = init_nodebug_var_type (objfile
, "<variable (not text or data), no debug info>");
5953 objfile_type
->nodebug_tls_symbol
5954 = init_nodebug_var_type (objfile
, "<thread local variable, no debug info>");
5956 /* NOTE: on some targets, addresses and pointers are not necessarily
5960 - gdb's `struct type' always describes the target's
5962 - gdb's `struct value' objects should always hold values in
5964 - gdb's CORE_ADDR values are addresses in the unified virtual
5965 address space that the assembler and linker work with. Thus,
5966 since target_read_memory takes a CORE_ADDR as an argument, it
5967 can access any memory on the target, even if the processor has
5968 separate code and data address spaces.
5970 In this context, objfile_type->builtin_core_addr is a bit odd:
5971 it's a target type for a value the target will never see. It's
5972 only used to hold the values of (typeless) linker symbols, which
5973 are indeed in the unified virtual address space. */
5975 objfile_type
->builtin_core_addr
5976 = init_integer_type (objfile
, gdbarch_addr_bit (gdbarch
), 1,
5979 objfile_type_data
.set (objfile
, objfile_type
);
5980 return objfile_type
;
5983 void _initialize_gdbtypes ();
5985 _initialize_gdbtypes ()
5987 gdbtypes_data
= gdbarch_data_register_post_init (gdbtypes_post_init
);
5989 add_setshow_zuinteger_cmd ("overload", no_class
, &overload_debug
,
5990 _("Set debugging of C++ overloading."),
5991 _("Show debugging of C++ overloading."),
5992 _("When enabled, ranking of the "
5993 "functions is displayed."),
5995 show_overload_debug
,
5996 &setdebuglist
, &showdebuglist
);
5998 /* Add user knob for controlling resolution of opaque types. */
5999 add_setshow_boolean_cmd ("opaque-type-resolution", class_support
,
6000 &opaque_type_resolution
,
6001 _("Set resolution of opaque struct/class/union"
6002 " types (if set before loading symbols)."),
6003 _("Show resolution of opaque struct/class/union"
6004 " types (if set before loading symbols)."),
6006 show_opaque_type_resolution
,
6007 &setlist
, &showlist
);
6009 /* Add an option to permit non-strict type checking. */
6010 add_setshow_boolean_cmd ("type", class_support
,
6011 &strict_type_checking
,
6012 _("Set strict type checking."),
6013 _("Show strict type checking."),
6015 show_strict_type_checking
,
6016 &setchecklist
, &showchecklist
);