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
));
938 TYPE_RANGE_DATA (result_type
) = (struct range_bounds
*)
939 TYPE_ZALLOC (result_type
, sizeof (struct range_bounds
));
940 TYPE_RANGE_DATA (result_type
)->low
= *low_bound
;
941 TYPE_RANGE_DATA (result_type
)->high
= *high_bound
;
942 TYPE_RANGE_DATA (result_type
)->bias
= bias
;
944 /* Initialize the stride to be a constant, the value will already be zero
945 thanks to the use of TYPE_ZALLOC above. */
946 TYPE_RANGE_DATA (result_type
)->stride
.kind
= PROP_CONST
;
948 if (low_bound
->kind
== PROP_CONST
&& low_bound
->data
.const_val
>= 0)
949 TYPE_UNSIGNED (result_type
) = 1;
951 /* Ada allows the declaration of range types whose upper bound is
952 less than the lower bound, so checking the lower bound is not
953 enough. Make sure we do not mark a range type whose upper bound
954 is negative as unsigned. */
955 if (high_bound
->kind
== PROP_CONST
&& high_bound
->data
.const_val
< 0)
956 TYPE_UNSIGNED (result_type
) = 0;
958 TYPE_ENDIANITY_NOT_DEFAULT (result_type
)
959 = TYPE_ENDIANITY_NOT_DEFAULT (index_type
);
964 /* See gdbtypes.h. */
967 create_range_type_with_stride (struct type
*result_type
,
968 struct type
*index_type
,
969 const struct dynamic_prop
*low_bound
,
970 const struct dynamic_prop
*high_bound
,
972 const struct dynamic_prop
*stride
,
975 result_type
= create_range_type (result_type
, index_type
, low_bound
,
978 gdb_assert (stride
!= nullptr);
979 TYPE_RANGE_DATA (result_type
)->stride
= *stride
;
980 TYPE_RANGE_DATA (result_type
)->flag_is_byte_stride
= byte_stride_p
;
987 /* Create a range type using either a blank type supplied in
988 RESULT_TYPE, or creating a new type, inheriting the objfile from
991 Indices will be of type INDEX_TYPE, and will range from LOW_BOUND
992 to HIGH_BOUND, inclusive.
994 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
995 sure it is TYPE_CODE_UNDEF before we bash it into a range type? */
998 create_static_range_type (struct type
*result_type
, struct type
*index_type
,
999 LONGEST low_bound
, LONGEST high_bound
)
1001 struct dynamic_prop low
, high
;
1003 low
.kind
= PROP_CONST
;
1004 low
.data
.const_val
= low_bound
;
1006 high
.kind
= PROP_CONST
;
1007 high
.data
.const_val
= high_bound
;
1009 result_type
= create_range_type (result_type
, index_type
, &low
, &high
, 0);
1014 /* Predicate tests whether BOUNDS are static. Returns 1 if all bounds values
1015 are static, otherwise returns 0. */
1018 has_static_range (const struct range_bounds
*bounds
)
1020 /* If the range doesn't have a defined stride then its stride field will
1021 be initialized to the constant 0. */
1022 return (bounds
->low
.kind
== PROP_CONST
1023 && bounds
->high
.kind
== PROP_CONST
1024 && bounds
->stride
.kind
== PROP_CONST
);
1028 /* Set *LOWP and *HIGHP to the lower and upper bounds of discrete type
1029 TYPE. Return 1 if type is a range type, 0 if it is discrete (and
1030 bounds will fit in LONGEST), or -1 otherwise. */
1033 get_discrete_bounds (struct type
*type
, LONGEST
*lowp
, LONGEST
*highp
)
1035 type
= check_typedef (type
);
1036 switch (type
->code ())
1038 case TYPE_CODE_RANGE
:
1039 *lowp
= TYPE_LOW_BOUND (type
);
1040 *highp
= TYPE_HIGH_BOUND (type
);
1041 if (TYPE_TARGET_TYPE (type
)->code () == TYPE_CODE_ENUM
)
1043 if (!discrete_position (TYPE_TARGET_TYPE (type
), *lowp
, lowp
)
1044 || ! discrete_position (TYPE_TARGET_TYPE (type
), *highp
, highp
))
1048 case TYPE_CODE_ENUM
:
1049 if (type
->num_fields () > 0)
1051 /* The enums may not be sorted by value, so search all
1055 *lowp
= *highp
= TYPE_FIELD_ENUMVAL (type
, 0);
1056 for (i
= 0; i
< type
->num_fields (); i
++)
1058 if (TYPE_FIELD_ENUMVAL (type
, i
) < *lowp
)
1059 *lowp
= TYPE_FIELD_ENUMVAL (type
, i
);
1060 if (TYPE_FIELD_ENUMVAL (type
, i
) > *highp
)
1061 *highp
= TYPE_FIELD_ENUMVAL (type
, i
);
1064 /* Set unsigned indicator if warranted. */
1067 TYPE_UNSIGNED (type
) = 1;
1076 case TYPE_CODE_BOOL
:
1081 if (TYPE_LENGTH (type
) > sizeof (LONGEST
)) /* Too big */
1083 if (!TYPE_UNSIGNED (type
))
1085 *lowp
= -(1 << (TYPE_LENGTH (type
) * TARGET_CHAR_BIT
- 1));
1086 *highp
= -*lowp
- 1;
1090 case TYPE_CODE_CHAR
:
1092 /* This round-about calculation is to avoid shifting by
1093 TYPE_LENGTH (type) * TARGET_CHAR_BIT, which will not work
1094 if TYPE_LENGTH (type) == sizeof (LONGEST). */
1095 *highp
= 1 << (TYPE_LENGTH (type
) * TARGET_CHAR_BIT
- 1);
1096 *highp
= (*highp
- 1) | *highp
;
1103 /* Assuming TYPE is a simple, non-empty array type, compute its upper
1104 and lower bound. Save the low bound into LOW_BOUND if not NULL.
1105 Save the high bound into HIGH_BOUND if not NULL.
1107 Return 1 if the operation was successful. Return zero otherwise,
1108 in which case the values of LOW_BOUND and HIGH_BOUNDS are unmodified.
1110 We now simply use get_discrete_bounds call to get the values
1111 of the low and high bounds.
1112 get_discrete_bounds can return three values:
1113 1, meaning that index is a range,
1114 0, meaning that index is a discrete type,
1115 or -1 for failure. */
1118 get_array_bounds (struct type
*type
, LONGEST
*low_bound
, LONGEST
*high_bound
)
1120 struct type
*index
= type
->index_type ();
1128 res
= get_discrete_bounds (index
, &low
, &high
);
1132 /* Check if the array bounds are undefined. */
1134 && ((low_bound
&& TYPE_ARRAY_LOWER_BOUND_IS_UNDEFINED (type
))
1135 || (high_bound
&& TYPE_ARRAY_UPPER_BOUND_IS_UNDEFINED (type
))))
1147 /* Assuming that TYPE is a discrete type and VAL is a valid integer
1148 representation of a value of this type, save the corresponding
1149 position number in POS.
1151 Its differs from VAL only in the case of enumeration types. In
1152 this case, the position number of the value of the first listed
1153 enumeration literal is zero; the position number of the value of
1154 each subsequent enumeration literal is one more than that of its
1155 predecessor in the list.
1157 Return 1 if the operation was successful. Return zero otherwise,
1158 in which case the value of POS is unmodified.
1162 discrete_position (struct type
*type
, LONGEST val
, LONGEST
*pos
)
1164 if (type
->code () == TYPE_CODE_RANGE
)
1165 type
= TYPE_TARGET_TYPE (type
);
1167 if (type
->code () == TYPE_CODE_ENUM
)
1171 for (i
= 0; i
< type
->num_fields (); i
+= 1)
1173 if (val
== TYPE_FIELD_ENUMVAL (type
, i
))
1179 /* Invalid enumeration value. */
1189 /* If the array TYPE has static bounds calculate and update its
1190 size, then return true. Otherwise return false and leave TYPE
1194 update_static_array_size (struct type
*type
)
1196 gdb_assert (type
->code () == TYPE_CODE_ARRAY
);
1198 struct type
*range_type
= type
->index_type ();
1200 if (type
->dyn_prop (DYN_PROP_BYTE_STRIDE
) == nullptr
1201 && has_static_range (TYPE_RANGE_DATA (range_type
))
1202 && (!type_not_associated (type
)
1203 && !type_not_allocated (type
)))
1205 LONGEST low_bound
, high_bound
;
1207 struct type
*element_type
;
1209 /* If the array itself doesn't provide a stride value then take
1210 whatever stride the range provides. Don't update BIT_STRIDE as
1211 we don't want to place the stride value from the range into this
1212 arrays bit size field. */
1213 stride
= TYPE_FIELD_BITSIZE (type
, 0);
1215 stride
= TYPE_BIT_STRIDE (range_type
);
1217 if (get_discrete_bounds (range_type
, &low_bound
, &high_bound
) < 0)
1218 low_bound
= high_bound
= 0;
1219 element_type
= check_typedef (TYPE_TARGET_TYPE (type
));
1220 /* Be careful when setting the array length. Ada arrays can be
1221 empty arrays with the high_bound being smaller than the low_bound.
1222 In such cases, the array length should be zero. */
1223 if (high_bound
< low_bound
)
1224 TYPE_LENGTH (type
) = 0;
1225 else if (stride
!= 0)
1227 /* Ensure that the type length is always positive, even in the
1228 case where (for example in Fortran) we have a negative
1229 stride. It is possible to have a single element array with a
1230 negative stride in Fortran (this doesn't mean anything
1231 special, it's still just a single element array) so do
1232 consider that case when touching this code. */
1233 LONGEST element_count
= std::abs (high_bound
- low_bound
+ 1);
1235 = ((std::abs (stride
) * element_count
) + 7) / 8;
1238 TYPE_LENGTH (type
) =
1239 TYPE_LENGTH (element_type
) * (high_bound
- low_bound
+ 1);
1247 /* Create an array type using either a blank type supplied in
1248 RESULT_TYPE, or creating a new type, inheriting the objfile from
1251 Elements will be of type ELEMENT_TYPE, the indices will be of type
1254 BYTE_STRIDE_PROP, when not NULL, provides the array's byte stride.
1255 This byte stride property is added to the resulting array type
1256 as a DYN_PROP_BYTE_STRIDE. As a consequence, the BYTE_STRIDE_PROP
1257 argument can only be used to create types that are objfile-owned
1258 (see add_dyn_prop), meaning that either this function must be called
1259 with an objfile-owned RESULT_TYPE, or an objfile-owned RANGE_TYPE.
1261 BIT_STRIDE is taken into account only when BYTE_STRIDE_PROP is NULL.
1262 If BIT_STRIDE is not zero, build a packed array type whose element
1263 size is BIT_STRIDE. Otherwise, ignore this parameter.
1265 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
1266 sure it is TYPE_CODE_UNDEF before we bash it into an array
1270 create_array_type_with_stride (struct type
*result_type
,
1271 struct type
*element_type
,
1272 struct type
*range_type
,
1273 struct dynamic_prop
*byte_stride_prop
,
1274 unsigned int bit_stride
)
1276 if (byte_stride_prop
!= NULL
1277 && byte_stride_prop
->kind
== PROP_CONST
)
1279 /* The byte stride is actually not dynamic. Pretend we were
1280 called with bit_stride set instead of byte_stride_prop.
1281 This will give us the same result type, while avoiding
1282 the need to handle this as a special case. */
1283 bit_stride
= byte_stride_prop
->data
.const_val
* 8;
1284 byte_stride_prop
= NULL
;
1287 if (result_type
== NULL
)
1288 result_type
= alloc_type_copy (range_type
);
1290 result_type
->set_code (TYPE_CODE_ARRAY
);
1291 TYPE_TARGET_TYPE (result_type
) = element_type
;
1293 result_type
->set_num_fields (1);
1294 result_type
->set_fields
1295 ((struct field
*) TYPE_ZALLOC (result_type
, sizeof (struct field
)));
1296 result_type
->set_index_type (range_type
);
1297 if (byte_stride_prop
!= NULL
)
1298 result_type
->add_dyn_prop (DYN_PROP_BYTE_STRIDE
, *byte_stride_prop
);
1299 else if (bit_stride
> 0)
1300 TYPE_FIELD_BITSIZE (result_type
, 0) = bit_stride
;
1302 if (!update_static_array_size (result_type
))
1304 /* This type is dynamic and its length needs to be computed
1305 on demand. In the meantime, avoid leaving the TYPE_LENGTH
1306 undefined by setting it to zero. Although we are not expected
1307 to trust TYPE_LENGTH in this case, setting the size to zero
1308 allows us to avoid allocating objects of random sizes in case
1309 we accidently do. */
1310 TYPE_LENGTH (result_type
) = 0;
1313 /* TYPE_TARGET_STUB will take care of zero length arrays. */
1314 if (TYPE_LENGTH (result_type
) == 0)
1315 TYPE_TARGET_STUB (result_type
) = 1;
1320 /* Same as create_array_type_with_stride but with no bit_stride
1321 (BIT_STRIDE = 0), thus building an unpacked array. */
1324 create_array_type (struct type
*result_type
,
1325 struct type
*element_type
,
1326 struct type
*range_type
)
1328 return create_array_type_with_stride (result_type
, element_type
,
1329 range_type
, NULL
, 0);
1333 lookup_array_range_type (struct type
*element_type
,
1334 LONGEST low_bound
, LONGEST high_bound
)
1336 struct type
*index_type
;
1337 struct type
*range_type
;
1339 if (TYPE_OBJFILE_OWNED (element_type
))
1340 index_type
= objfile_type (TYPE_OWNER (element_type
).objfile
)->builtin_int
;
1342 index_type
= builtin_type (get_type_arch (element_type
))->builtin_int
;
1343 range_type
= create_static_range_type (NULL
, index_type
,
1344 low_bound
, high_bound
);
1346 return create_array_type (NULL
, element_type
, range_type
);
1349 /* Create a string type using either a blank type supplied in
1350 RESULT_TYPE, or creating a new type. String types are similar
1351 enough to array of char types that we can use create_array_type to
1352 build the basic type and then bash it into a string type.
1354 For fixed length strings, the range type contains 0 as the lower
1355 bound and the length of the string minus one as the upper bound.
1357 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
1358 sure it is TYPE_CODE_UNDEF before we bash it into a string
1362 create_string_type (struct type
*result_type
,
1363 struct type
*string_char_type
,
1364 struct type
*range_type
)
1366 result_type
= create_array_type (result_type
,
1369 result_type
->set_code (TYPE_CODE_STRING
);
1374 lookup_string_range_type (struct type
*string_char_type
,
1375 LONGEST low_bound
, LONGEST high_bound
)
1377 struct type
*result_type
;
1379 result_type
= lookup_array_range_type (string_char_type
,
1380 low_bound
, high_bound
);
1381 result_type
->set_code (TYPE_CODE_STRING
);
1386 create_set_type (struct type
*result_type
, struct type
*domain_type
)
1388 if (result_type
== NULL
)
1389 result_type
= alloc_type_copy (domain_type
);
1391 result_type
->set_code (TYPE_CODE_SET
);
1392 result_type
->set_num_fields (1);
1393 result_type
->set_fields
1394 ((struct field
*) TYPE_ZALLOC (result_type
, sizeof (struct field
)));
1396 if (!TYPE_STUB (domain_type
))
1398 LONGEST low_bound
, high_bound
, bit_length
;
1400 if (get_discrete_bounds (domain_type
, &low_bound
, &high_bound
) < 0)
1401 low_bound
= high_bound
= 0;
1402 bit_length
= high_bound
- low_bound
+ 1;
1403 TYPE_LENGTH (result_type
)
1404 = (bit_length
+ TARGET_CHAR_BIT
- 1) / TARGET_CHAR_BIT
;
1406 TYPE_UNSIGNED (result_type
) = 1;
1408 result_type
->field (0).set_type (domain_type
);
1413 /* Convert ARRAY_TYPE to a vector type. This may modify ARRAY_TYPE
1414 and any array types nested inside it. */
1417 make_vector_type (struct type
*array_type
)
1419 struct type
*inner_array
, *elt_type
;
1422 /* Find the innermost array type, in case the array is
1423 multi-dimensional. */
1424 inner_array
= array_type
;
1425 while (TYPE_TARGET_TYPE (inner_array
)->code () == TYPE_CODE_ARRAY
)
1426 inner_array
= TYPE_TARGET_TYPE (inner_array
);
1428 elt_type
= TYPE_TARGET_TYPE (inner_array
);
1429 if (elt_type
->code () == TYPE_CODE_INT
)
1431 flags
= TYPE_INSTANCE_FLAGS (elt_type
) | TYPE_INSTANCE_FLAG_NOTTEXT
;
1432 elt_type
= make_qualified_type (elt_type
, flags
, NULL
);
1433 TYPE_TARGET_TYPE (inner_array
) = elt_type
;
1436 TYPE_VECTOR (array_type
) = 1;
1440 init_vector_type (struct type
*elt_type
, int n
)
1442 struct type
*array_type
;
1444 array_type
= lookup_array_range_type (elt_type
, 0, n
- 1);
1445 make_vector_type (array_type
);
1449 /* Internal routine called by TYPE_SELF_TYPE to return the type that TYPE
1450 belongs to. In c++ this is the class of "this", but TYPE_THIS_TYPE is too
1451 confusing. "self" is a common enough replacement for "this".
1452 TYPE must be one of TYPE_CODE_METHODPTR, TYPE_CODE_MEMBERPTR, or
1453 TYPE_CODE_METHOD. */
1456 internal_type_self_type (struct type
*type
)
1458 switch (type
->code ())
1460 case TYPE_CODE_METHODPTR
:
1461 case TYPE_CODE_MEMBERPTR
:
1462 if (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_NONE
)
1464 gdb_assert (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_SELF_TYPE
);
1465 return TYPE_MAIN_TYPE (type
)->type_specific
.self_type
;
1466 case TYPE_CODE_METHOD
:
1467 if (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_NONE
)
1469 gdb_assert (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_FUNC
);
1470 return TYPE_MAIN_TYPE (type
)->type_specific
.func_stuff
->self_type
;
1472 gdb_assert_not_reached ("bad type");
1476 /* Set the type of the class that TYPE belongs to.
1477 In c++ this is the class of "this".
1478 TYPE must be one of TYPE_CODE_METHODPTR, TYPE_CODE_MEMBERPTR, or
1479 TYPE_CODE_METHOD. */
1482 set_type_self_type (struct type
*type
, struct type
*self_type
)
1484 switch (type
->code ())
1486 case TYPE_CODE_METHODPTR
:
1487 case TYPE_CODE_MEMBERPTR
:
1488 if (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_NONE
)
1489 TYPE_SPECIFIC_FIELD (type
) = TYPE_SPECIFIC_SELF_TYPE
;
1490 gdb_assert (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_SELF_TYPE
);
1491 TYPE_MAIN_TYPE (type
)->type_specific
.self_type
= self_type
;
1493 case TYPE_CODE_METHOD
:
1494 if (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_NONE
)
1495 INIT_FUNC_SPECIFIC (type
);
1496 gdb_assert (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_FUNC
);
1497 TYPE_MAIN_TYPE (type
)->type_specific
.func_stuff
->self_type
= self_type
;
1500 gdb_assert_not_reached ("bad type");
1504 /* Smash TYPE to be a type of pointers to members of SELF_TYPE with type
1505 TO_TYPE. A member pointer is a wierd thing -- it amounts to a
1506 typed offset into a struct, e.g. "an int at offset 8". A MEMBER
1507 TYPE doesn't include the offset (that's the value of the MEMBER
1508 itself), but does include the structure type into which it points
1511 When "smashing" the type, we preserve the objfile that the old type
1512 pointed to, since we aren't changing where the type is actually
1516 smash_to_memberptr_type (struct type
*type
, struct type
*self_type
,
1517 struct type
*to_type
)
1520 type
->set_code (TYPE_CODE_MEMBERPTR
);
1521 TYPE_TARGET_TYPE (type
) = to_type
;
1522 set_type_self_type (type
, self_type
);
1523 /* Assume that a data member pointer is the same size as a normal
1526 = gdbarch_ptr_bit (get_type_arch (to_type
)) / TARGET_CHAR_BIT
;
1529 /* Smash TYPE to be a type of pointer to methods type TO_TYPE.
1531 When "smashing" the type, we preserve the objfile that the old type
1532 pointed to, since we aren't changing where the type is actually
1536 smash_to_methodptr_type (struct type
*type
, struct type
*to_type
)
1539 type
->set_code (TYPE_CODE_METHODPTR
);
1540 TYPE_TARGET_TYPE (type
) = to_type
;
1541 set_type_self_type (type
, TYPE_SELF_TYPE (to_type
));
1542 TYPE_LENGTH (type
) = cplus_method_ptr_size (to_type
);
1545 /* Smash TYPE to be a type of method of SELF_TYPE with type TO_TYPE.
1546 METHOD just means `function that gets an extra "this" argument'.
1548 When "smashing" the type, we preserve the objfile that the old type
1549 pointed to, since we aren't changing where the type is actually
1553 smash_to_method_type (struct type
*type
, struct type
*self_type
,
1554 struct type
*to_type
, struct field
*args
,
1555 int nargs
, int varargs
)
1558 type
->set_code (TYPE_CODE_METHOD
);
1559 TYPE_TARGET_TYPE (type
) = to_type
;
1560 set_type_self_type (type
, self_type
);
1561 type
->set_fields (args
);
1562 type
->set_num_fields (nargs
);
1564 TYPE_VARARGS (type
) = 1;
1565 TYPE_LENGTH (type
) = 1; /* In practice, this is never needed. */
1568 /* A wrapper of TYPE_NAME which calls error if the type is anonymous.
1569 Since GCC PR debug/47510 DWARF provides associated information to detect the
1570 anonymous class linkage name from its typedef.
1572 Parameter TYPE should not yet have CHECK_TYPEDEF applied, this function will
1576 type_name_or_error (struct type
*type
)
1578 struct type
*saved_type
= type
;
1580 struct objfile
*objfile
;
1582 type
= check_typedef (type
);
1584 name
= type
->name ();
1588 name
= saved_type
->name ();
1589 objfile
= TYPE_OBJFILE (saved_type
);
1590 error (_("Invalid anonymous type %s [in module %s], GCC PR debug/47510 bug?"),
1591 name
? name
: "<anonymous>",
1592 objfile
? objfile_name (objfile
) : "<arch>");
1595 /* Lookup a typedef or primitive type named NAME, visible in lexical
1596 block BLOCK. If NOERR is nonzero, return zero if NAME is not
1597 suitably defined. */
1600 lookup_typename (const struct language_defn
*language
,
1602 const struct block
*block
, int noerr
)
1606 sym
= lookup_symbol_in_language (name
, block
, VAR_DOMAIN
,
1607 language
->la_language
, NULL
).symbol
;
1608 if (sym
!= NULL
&& SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
1609 return SYMBOL_TYPE (sym
);
1613 error (_("No type named %s."), name
);
1617 lookup_unsigned_typename (const struct language_defn
*language
,
1620 char *uns
= (char *) alloca (strlen (name
) + 10);
1622 strcpy (uns
, "unsigned ");
1623 strcpy (uns
+ 9, name
);
1624 return lookup_typename (language
, uns
, NULL
, 0);
1628 lookup_signed_typename (const struct language_defn
*language
, const char *name
)
1631 char *uns
= (char *) alloca (strlen (name
) + 8);
1633 strcpy (uns
, "signed ");
1634 strcpy (uns
+ 7, name
);
1635 t
= lookup_typename (language
, uns
, NULL
, 1);
1636 /* If we don't find "signed FOO" just try again with plain "FOO". */
1639 return lookup_typename (language
, name
, NULL
, 0);
1642 /* Lookup a structure type named "struct NAME",
1643 visible in lexical block BLOCK. */
1646 lookup_struct (const char *name
, const struct block
*block
)
1650 sym
= lookup_symbol (name
, block
, STRUCT_DOMAIN
, 0).symbol
;
1654 error (_("No struct type named %s."), name
);
1656 if (SYMBOL_TYPE (sym
)->code () != TYPE_CODE_STRUCT
)
1658 error (_("This context has class, union or enum %s, not a struct."),
1661 return (SYMBOL_TYPE (sym
));
1664 /* Lookup a union type named "union NAME",
1665 visible in lexical block BLOCK. */
1668 lookup_union (const char *name
, const struct block
*block
)
1673 sym
= lookup_symbol (name
, block
, STRUCT_DOMAIN
, 0).symbol
;
1676 error (_("No union type named %s."), name
);
1678 t
= SYMBOL_TYPE (sym
);
1680 if (t
->code () == TYPE_CODE_UNION
)
1683 /* If we get here, it's not a union. */
1684 error (_("This context has class, struct or enum %s, not a union."),
1688 /* Lookup an enum type named "enum NAME",
1689 visible in lexical block BLOCK. */
1692 lookup_enum (const char *name
, const struct block
*block
)
1696 sym
= lookup_symbol (name
, block
, STRUCT_DOMAIN
, 0).symbol
;
1699 error (_("No enum type named %s."), name
);
1701 if (SYMBOL_TYPE (sym
)->code () != TYPE_CODE_ENUM
)
1703 error (_("This context has class, struct or union %s, not an enum."),
1706 return (SYMBOL_TYPE (sym
));
1709 /* Lookup a template type named "template NAME<TYPE>",
1710 visible in lexical block BLOCK. */
1713 lookup_template_type (const char *name
, struct type
*type
,
1714 const struct block
*block
)
1717 char *nam
= (char *)
1718 alloca (strlen (name
) + strlen (type
->name ()) + 4);
1722 strcat (nam
, type
->name ());
1723 strcat (nam
, " >"); /* FIXME, extra space still introduced in gcc? */
1725 sym
= lookup_symbol (nam
, block
, VAR_DOMAIN
, 0).symbol
;
1729 error (_("No template type named %s."), name
);
1731 if (SYMBOL_TYPE (sym
)->code () != TYPE_CODE_STRUCT
)
1733 error (_("This context has class, union or enum %s, not a struct."),
1736 return (SYMBOL_TYPE (sym
));
1739 /* See gdbtypes.h. */
1742 lookup_struct_elt (struct type
*type
, const char *name
, int noerr
)
1748 type
= check_typedef (type
);
1749 if (type
->code () != TYPE_CODE_PTR
1750 && type
->code () != TYPE_CODE_REF
)
1752 type
= TYPE_TARGET_TYPE (type
);
1755 if (type
->code () != TYPE_CODE_STRUCT
1756 && type
->code () != TYPE_CODE_UNION
)
1758 std::string type_name
= type_to_string (type
);
1759 error (_("Type %s is not a structure or union type."),
1760 type_name
.c_str ());
1763 for (i
= type
->num_fields () - 1; i
>= TYPE_N_BASECLASSES (type
); i
--)
1765 const char *t_field_name
= TYPE_FIELD_NAME (type
, i
);
1767 if (t_field_name
&& (strcmp_iw (t_field_name
, name
) == 0))
1769 return {&type
->field (i
), TYPE_FIELD_BITPOS (type
, i
)};
1771 else if (!t_field_name
|| *t_field_name
== '\0')
1774 = lookup_struct_elt (type
->field (i
).type (), name
, 1);
1775 if (elt
.field
!= NULL
)
1777 elt
.offset
+= TYPE_FIELD_BITPOS (type
, i
);
1783 /* OK, it's not in this class. Recursively check the baseclasses. */
1784 for (i
= TYPE_N_BASECLASSES (type
) - 1; i
>= 0; i
--)
1786 struct_elt elt
= lookup_struct_elt (TYPE_BASECLASS (type
, i
), name
, 1);
1787 if (elt
.field
!= NULL
)
1792 return {nullptr, 0};
1794 std::string type_name
= type_to_string (type
);
1795 error (_("Type %s has no component named %s."), type_name
.c_str (), name
);
1798 /* See gdbtypes.h. */
1801 lookup_struct_elt_type (struct type
*type
, const char *name
, int noerr
)
1803 struct_elt elt
= lookup_struct_elt (type
, name
, noerr
);
1804 if (elt
.field
!= NULL
)
1805 return elt
.field
->type ();
1810 /* Store in *MAX the largest number representable by unsigned integer type
1814 get_unsigned_type_max (struct type
*type
, ULONGEST
*max
)
1818 type
= check_typedef (type
);
1819 gdb_assert (type
->code () == TYPE_CODE_INT
&& TYPE_UNSIGNED (type
));
1820 gdb_assert (TYPE_LENGTH (type
) <= sizeof (ULONGEST
));
1822 /* Written this way to avoid overflow. */
1823 n
= TYPE_LENGTH (type
) * TARGET_CHAR_BIT
;
1824 *max
= ((((ULONGEST
) 1 << (n
- 1)) - 1) << 1) | 1;
1827 /* Store in *MIN, *MAX the smallest and largest numbers representable by
1828 signed integer type TYPE. */
1831 get_signed_type_minmax (struct type
*type
, LONGEST
*min
, LONGEST
*max
)
1835 type
= check_typedef (type
);
1836 gdb_assert (type
->code () == TYPE_CODE_INT
&& !TYPE_UNSIGNED (type
));
1837 gdb_assert (TYPE_LENGTH (type
) <= sizeof (LONGEST
));
1839 n
= TYPE_LENGTH (type
) * TARGET_CHAR_BIT
;
1840 *min
= -((ULONGEST
) 1 << (n
- 1));
1841 *max
= ((ULONGEST
) 1 << (n
- 1)) - 1;
1844 /* Internal routine called by TYPE_VPTR_FIELDNO to return the value of
1845 cplus_stuff.vptr_fieldno.
1847 cplus_stuff is initialized to cplus_struct_default which does not
1848 set vptr_fieldno to -1 for portability reasons (IWBN to use C99
1849 designated initializers). We cope with that here. */
1852 internal_type_vptr_fieldno (struct type
*type
)
1854 type
= check_typedef (type
);
1855 gdb_assert (type
->code () == TYPE_CODE_STRUCT
1856 || type
->code () == TYPE_CODE_UNION
);
1857 if (!HAVE_CPLUS_STRUCT (type
))
1859 return TYPE_RAW_CPLUS_SPECIFIC (type
)->vptr_fieldno
;
1862 /* Set the value of cplus_stuff.vptr_fieldno. */
1865 set_type_vptr_fieldno (struct type
*type
, int fieldno
)
1867 type
= check_typedef (type
);
1868 gdb_assert (type
->code () == TYPE_CODE_STRUCT
1869 || type
->code () == TYPE_CODE_UNION
);
1870 if (!HAVE_CPLUS_STRUCT (type
))
1871 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
1872 TYPE_RAW_CPLUS_SPECIFIC (type
)->vptr_fieldno
= fieldno
;
1875 /* Internal routine called by TYPE_VPTR_BASETYPE to return the value of
1876 cplus_stuff.vptr_basetype. */
1879 internal_type_vptr_basetype (struct type
*type
)
1881 type
= check_typedef (type
);
1882 gdb_assert (type
->code () == TYPE_CODE_STRUCT
1883 || type
->code () == TYPE_CODE_UNION
);
1884 gdb_assert (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_CPLUS_STUFF
);
1885 return TYPE_RAW_CPLUS_SPECIFIC (type
)->vptr_basetype
;
1888 /* Set the value of cplus_stuff.vptr_basetype. */
1891 set_type_vptr_basetype (struct type
*type
, struct type
*basetype
)
1893 type
= check_typedef (type
);
1894 gdb_assert (type
->code () == TYPE_CODE_STRUCT
1895 || type
->code () == TYPE_CODE_UNION
);
1896 if (!HAVE_CPLUS_STRUCT (type
))
1897 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
1898 TYPE_RAW_CPLUS_SPECIFIC (type
)->vptr_basetype
= basetype
;
1901 /* Lookup the vptr basetype/fieldno values for TYPE.
1902 If found store vptr_basetype in *BASETYPEP if non-NULL, and return
1903 vptr_fieldno. Also, if found and basetype is from the same objfile,
1905 If not found, return -1 and ignore BASETYPEP.
1906 Callers should be aware that in some cases (for example,
1907 the type or one of its baseclasses is a stub type and we are
1908 debugging a .o file, or the compiler uses DWARF-2 and is not GCC),
1909 this function will not be able to find the
1910 virtual function table pointer, and vptr_fieldno will remain -1 and
1911 vptr_basetype will remain NULL or incomplete. */
1914 get_vptr_fieldno (struct type
*type
, struct type
**basetypep
)
1916 type
= check_typedef (type
);
1918 if (TYPE_VPTR_FIELDNO (type
) < 0)
1922 /* We must start at zero in case the first (and only) baseclass
1923 is virtual (and hence we cannot share the table pointer). */
1924 for (i
= 0; i
< TYPE_N_BASECLASSES (type
); i
++)
1926 struct type
*baseclass
= check_typedef (TYPE_BASECLASS (type
, i
));
1928 struct type
*basetype
;
1930 fieldno
= get_vptr_fieldno (baseclass
, &basetype
);
1933 /* If the type comes from a different objfile we can't cache
1934 it, it may have a different lifetime. PR 2384 */
1935 if (TYPE_OBJFILE (type
) == TYPE_OBJFILE (basetype
))
1937 set_type_vptr_fieldno (type
, fieldno
);
1938 set_type_vptr_basetype (type
, basetype
);
1941 *basetypep
= basetype
;
1952 *basetypep
= TYPE_VPTR_BASETYPE (type
);
1953 return TYPE_VPTR_FIELDNO (type
);
1958 stub_noname_complaint (void)
1960 complaint (_("stub type has NULL name"));
1963 /* Return nonzero if TYPE has a DYN_PROP_BYTE_STRIDE dynamic property
1964 attached to it, and that property has a non-constant value. */
1967 array_type_has_dynamic_stride (struct type
*type
)
1969 struct dynamic_prop
*prop
= type
->dyn_prop (DYN_PROP_BYTE_STRIDE
);
1971 return (prop
!= NULL
&& prop
->kind
!= PROP_CONST
);
1974 /* Worker for is_dynamic_type. */
1977 is_dynamic_type_internal (struct type
*type
, int top_level
)
1979 type
= check_typedef (type
);
1981 /* We only want to recognize references at the outermost level. */
1982 if (top_level
&& type
->code () == TYPE_CODE_REF
)
1983 type
= check_typedef (TYPE_TARGET_TYPE (type
));
1985 /* Types that have a dynamic TYPE_DATA_LOCATION are considered
1986 dynamic, even if the type itself is statically defined.
1987 From a user's point of view, this may appear counter-intuitive;
1988 but it makes sense in this context, because the point is to determine
1989 whether any part of the type needs to be resolved before it can
1991 if (TYPE_DATA_LOCATION (type
) != NULL
1992 && (TYPE_DATA_LOCATION_KIND (type
) == PROP_LOCEXPR
1993 || TYPE_DATA_LOCATION_KIND (type
) == PROP_LOCLIST
))
1996 if (TYPE_ASSOCIATED_PROP (type
))
1999 if (TYPE_ALLOCATED_PROP (type
))
2002 struct dynamic_prop
*prop
= type
->dyn_prop (DYN_PROP_VARIANT_PARTS
);
2003 if (prop
!= nullptr && prop
->kind
!= PROP_TYPE
)
2006 if (TYPE_HAS_DYNAMIC_LENGTH (type
))
2009 switch (type
->code ())
2011 case TYPE_CODE_RANGE
:
2013 /* A range type is obviously dynamic if it has at least one
2014 dynamic bound. But also consider the range type to be
2015 dynamic when its subtype is dynamic, even if the bounds
2016 of the range type are static. It allows us to assume that
2017 the subtype of a static range type is also static. */
2018 return (!has_static_range (TYPE_RANGE_DATA (type
))
2019 || is_dynamic_type_internal (TYPE_TARGET_TYPE (type
), 0));
2022 case TYPE_CODE_STRING
:
2023 /* Strings are very much like an array of characters, and can be
2024 treated as one here. */
2025 case TYPE_CODE_ARRAY
:
2027 gdb_assert (type
->num_fields () == 1);
2029 /* The array is dynamic if either the bounds are dynamic... */
2030 if (is_dynamic_type_internal (type
->index_type (), 0))
2032 /* ... or the elements it contains have a dynamic contents... */
2033 if (is_dynamic_type_internal (TYPE_TARGET_TYPE (type
), 0))
2035 /* ... or if it has a dynamic stride... */
2036 if (array_type_has_dynamic_stride (type
))
2041 case TYPE_CODE_STRUCT
:
2042 case TYPE_CODE_UNION
:
2046 bool is_cplus
= HAVE_CPLUS_STRUCT (type
);
2048 for (i
= 0; i
< type
->num_fields (); ++i
)
2050 /* Static fields can be ignored here. */
2051 if (field_is_static (&type
->field (i
)))
2053 /* If the field has dynamic type, then so does TYPE. */
2054 if (is_dynamic_type_internal (type
->field (i
).type (), 0))
2056 /* If the field is at a fixed offset, then it is not
2058 if (TYPE_FIELD_LOC_KIND (type
, i
) != FIELD_LOC_KIND_DWARF_BLOCK
)
2060 /* Do not consider C++ virtual base types to be dynamic
2061 due to the field's offset being dynamic; these are
2062 handled via other means. */
2063 if (is_cplus
&& BASETYPE_VIA_VIRTUAL (type
, i
))
2074 /* See gdbtypes.h. */
2077 is_dynamic_type (struct type
*type
)
2079 return is_dynamic_type_internal (type
, 1);
2082 static struct type
*resolve_dynamic_type_internal
2083 (struct type
*type
, struct property_addr_info
*addr_stack
, int top_level
);
2085 /* Given a dynamic range type (dyn_range_type) and a stack of
2086 struct property_addr_info elements, return a static version
2089 static struct type
*
2090 resolve_dynamic_range (struct type
*dyn_range_type
,
2091 struct property_addr_info
*addr_stack
)
2094 struct type
*static_range_type
, *static_target_type
;
2095 const struct dynamic_prop
*prop
;
2096 struct dynamic_prop low_bound
, high_bound
, stride
;
2098 gdb_assert (dyn_range_type
->code () == TYPE_CODE_RANGE
);
2100 prop
= &TYPE_RANGE_DATA (dyn_range_type
)->low
;
2101 if (dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2103 low_bound
.kind
= PROP_CONST
;
2104 low_bound
.data
.const_val
= value
;
2108 low_bound
.kind
= PROP_UNDEFINED
;
2109 low_bound
.data
.const_val
= 0;
2112 prop
= &TYPE_RANGE_DATA (dyn_range_type
)->high
;
2113 if (dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2115 high_bound
.kind
= PROP_CONST
;
2116 high_bound
.data
.const_val
= value
;
2118 if (TYPE_RANGE_DATA (dyn_range_type
)->flag_upper_bound_is_count
)
2119 high_bound
.data
.const_val
2120 = low_bound
.data
.const_val
+ high_bound
.data
.const_val
- 1;
2124 high_bound
.kind
= PROP_UNDEFINED
;
2125 high_bound
.data
.const_val
= 0;
2128 bool byte_stride_p
= TYPE_RANGE_DATA (dyn_range_type
)->flag_is_byte_stride
;
2129 prop
= &TYPE_RANGE_DATA (dyn_range_type
)->stride
;
2130 if (dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2132 stride
.kind
= PROP_CONST
;
2133 stride
.data
.const_val
= value
;
2135 /* If we have a bit stride that is not an exact number of bytes then
2136 I really don't think this is going to work with current GDB, the
2137 array indexing code in GDB seems to be pretty heavily tied to byte
2138 offsets right now. Assuming 8 bits in a byte. */
2139 struct gdbarch
*gdbarch
= get_type_arch (dyn_range_type
);
2140 int unit_size
= gdbarch_addressable_memory_unit_size (gdbarch
);
2141 if (!byte_stride_p
&& (value
% (unit_size
* 8)) != 0)
2142 error (_("bit strides that are not a multiple of the byte size "
2143 "are currently not supported"));
2147 stride
.kind
= PROP_UNDEFINED
;
2148 stride
.data
.const_val
= 0;
2149 byte_stride_p
= true;
2153 = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (dyn_range_type
),
2155 LONGEST bias
= TYPE_RANGE_DATA (dyn_range_type
)->bias
;
2156 static_range_type
= create_range_type_with_stride
2157 (copy_type (dyn_range_type
), static_target_type
,
2158 &low_bound
, &high_bound
, bias
, &stride
, byte_stride_p
);
2159 TYPE_RANGE_DATA (static_range_type
)->flag_bound_evaluated
= 1;
2160 return static_range_type
;
2163 /* Resolves dynamic bound values of an array or string type TYPE to static
2164 ones. ADDR_STACK is a stack of struct property_addr_info to be used if
2165 needed during the dynamic resolution. */
2167 static struct type
*
2168 resolve_dynamic_array_or_string (struct type
*type
,
2169 struct property_addr_info
*addr_stack
)
2172 struct type
*elt_type
;
2173 struct type
*range_type
;
2174 struct type
*ary_dim
;
2175 struct dynamic_prop
*prop
;
2176 unsigned int bit_stride
= 0;
2178 /* For dynamic type resolution strings can be treated like arrays of
2180 gdb_assert (type
->code () == TYPE_CODE_ARRAY
2181 || type
->code () == TYPE_CODE_STRING
);
2183 type
= copy_type (type
);
2186 range_type
= check_typedef (elt_type
->index_type ());
2187 range_type
= resolve_dynamic_range (range_type
, addr_stack
);
2189 /* Resolve allocated/associated here before creating a new array type, which
2190 will update the length of the array accordingly. */
2191 prop
= TYPE_ALLOCATED_PROP (type
);
2192 if (prop
!= NULL
&& dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2194 TYPE_DYN_PROP_ADDR (prop
) = value
;
2195 TYPE_DYN_PROP_KIND (prop
) = PROP_CONST
;
2197 prop
= TYPE_ASSOCIATED_PROP (type
);
2198 if (prop
!= NULL
&& dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2200 TYPE_DYN_PROP_ADDR (prop
) = value
;
2201 TYPE_DYN_PROP_KIND (prop
) = PROP_CONST
;
2204 ary_dim
= check_typedef (TYPE_TARGET_TYPE (elt_type
));
2206 if (ary_dim
!= NULL
&& ary_dim
->code () == TYPE_CODE_ARRAY
)
2207 elt_type
= resolve_dynamic_array_or_string (ary_dim
, addr_stack
);
2209 elt_type
= TYPE_TARGET_TYPE (type
);
2211 prop
= type
->dyn_prop (DYN_PROP_BYTE_STRIDE
);
2214 if (dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2216 type
->remove_dyn_prop (DYN_PROP_BYTE_STRIDE
);
2217 bit_stride
= (unsigned int) (value
* 8);
2221 /* Could be a bug in our code, but it could also happen
2222 if the DWARF info is not correct. Issue a warning,
2223 and assume no byte/bit stride (leave bit_stride = 0). */
2224 warning (_("cannot determine array stride for type %s"),
2225 type
->name () ? type
->name () : "<no name>");
2229 bit_stride
= TYPE_FIELD_BITSIZE (type
, 0);
2231 return create_array_type_with_stride (type
, elt_type
, range_type
, NULL
,
2235 /* Resolve dynamic bounds of members of the union TYPE to static
2236 bounds. ADDR_STACK is a stack of struct property_addr_info
2237 to be used if needed during the dynamic resolution. */
2239 static struct type
*
2240 resolve_dynamic_union (struct type
*type
,
2241 struct property_addr_info
*addr_stack
)
2243 struct type
*resolved_type
;
2245 unsigned int max_len
= 0;
2247 gdb_assert (type
->code () == TYPE_CODE_UNION
);
2249 resolved_type
= copy_type (type
);
2250 resolved_type
->set_fields
2252 TYPE_ALLOC (resolved_type
,
2253 resolved_type
->num_fields () * sizeof (struct field
)));
2254 memcpy (resolved_type
->fields (),
2256 resolved_type
->num_fields () * sizeof (struct field
));
2257 for (i
= 0; i
< resolved_type
->num_fields (); ++i
)
2261 if (field_is_static (&type
->field (i
)))
2264 t
= resolve_dynamic_type_internal (resolved_type
->field (i
).type (),
2266 resolved_type
->field (i
).set_type (t
);
2268 struct type
*real_type
= check_typedef (t
);
2269 if (TYPE_LENGTH (real_type
) > max_len
)
2270 max_len
= TYPE_LENGTH (real_type
);
2273 TYPE_LENGTH (resolved_type
) = max_len
;
2274 return resolved_type
;
2277 /* See gdbtypes.h. */
2280 variant::matches (ULONGEST value
, bool is_unsigned
) const
2282 for (const discriminant_range
&range
: discriminants
)
2283 if (range
.contains (value
, is_unsigned
))
2289 compute_variant_fields_inner (struct type
*type
,
2290 struct property_addr_info
*addr_stack
,
2291 const variant_part
&part
,
2292 std::vector
<bool> &flags
);
2294 /* A helper function to determine which variant fields will be active.
2295 This handles both the variant's direct fields, and any variant
2296 parts embedded in this variant. TYPE is the type we're examining.
2297 ADDR_STACK holds information about the concrete object. VARIANT is
2298 the current variant to be handled. FLAGS is where the results are
2299 stored -- this function sets the Nth element in FLAGS if the
2300 corresponding field is enabled. ENABLED is whether this variant is
2304 compute_variant_fields_recurse (struct type
*type
,
2305 struct property_addr_info
*addr_stack
,
2306 const variant
&variant
,
2307 std::vector
<bool> &flags
,
2310 for (int field
= variant
.first_field
; field
< variant
.last_field
; ++field
)
2311 flags
[field
] = enabled
;
2313 for (const variant_part
&new_part
: variant
.parts
)
2316 compute_variant_fields_inner (type
, addr_stack
, new_part
, flags
);
2319 for (const auto &sub_variant
: new_part
.variants
)
2320 compute_variant_fields_recurse (type
, addr_stack
, sub_variant
,
2326 /* A helper function to determine which variant fields will be active.
2327 This evaluates the discriminant, decides which variant (if any) is
2328 active, and then updates FLAGS to reflect which fields should be
2329 available. TYPE is the type we're examining. ADDR_STACK holds
2330 information about the concrete object. VARIANT is the current
2331 variant to be handled. FLAGS is where the results are stored --
2332 this function sets the Nth element in FLAGS if the corresponding
2333 field is enabled. */
2336 compute_variant_fields_inner (struct type
*type
,
2337 struct property_addr_info
*addr_stack
,
2338 const variant_part
&part
,
2339 std::vector
<bool> &flags
)
2341 /* Evaluate the discriminant. */
2342 gdb::optional
<ULONGEST
> discr_value
;
2343 if (part
.discriminant_index
!= -1)
2345 int idx
= part
.discriminant_index
;
2347 if (TYPE_FIELD_LOC_KIND (type
, idx
) != FIELD_LOC_KIND_BITPOS
)
2348 error (_("Cannot determine struct field location"
2349 " (invalid location kind)"));
2351 if (addr_stack
->valaddr
.data () != NULL
)
2352 discr_value
= unpack_field_as_long (type
, addr_stack
->valaddr
.data (),
2356 CORE_ADDR addr
= (addr_stack
->addr
2357 + (TYPE_FIELD_BITPOS (type
, idx
)
2358 / TARGET_CHAR_BIT
));
2360 LONGEST bitsize
= TYPE_FIELD_BITSIZE (type
, idx
);
2361 LONGEST size
= bitsize
/ 8;
2363 size
= TYPE_LENGTH (type
->field (idx
).type ());
2365 gdb_byte bits
[sizeof (ULONGEST
)];
2366 read_memory (addr
, bits
, size
);
2368 LONGEST bitpos
= (TYPE_FIELD_BITPOS (type
, idx
)
2371 discr_value
= unpack_bits_as_long (type
->field (idx
).type (),
2372 bits
, bitpos
, bitsize
);
2376 /* Go through each variant and see which applies. */
2377 const variant
*default_variant
= nullptr;
2378 const variant
*applied_variant
= nullptr;
2379 for (const auto &variant
: part
.variants
)
2381 if (variant
.is_default ())
2382 default_variant
= &variant
;
2383 else if (discr_value
.has_value ()
2384 && variant
.matches (*discr_value
, part
.is_unsigned
))
2386 applied_variant
= &variant
;
2390 if (applied_variant
== nullptr)
2391 applied_variant
= default_variant
;
2393 for (const auto &variant
: part
.variants
)
2394 compute_variant_fields_recurse (type
, addr_stack
, variant
,
2395 flags
, applied_variant
== &variant
);
2398 /* Determine which variant fields are available in TYPE. The enabled
2399 fields are stored in RESOLVED_TYPE. ADDR_STACK holds information
2400 about the concrete object. PARTS describes the top-level variant
2401 parts for this type. */
2404 compute_variant_fields (struct type
*type
,
2405 struct type
*resolved_type
,
2406 struct property_addr_info
*addr_stack
,
2407 const gdb::array_view
<variant_part
> &parts
)
2409 /* Assume all fields are included by default. */
2410 std::vector
<bool> flags (resolved_type
->num_fields (), true);
2412 /* Now disable fields based on the variants that control them. */
2413 for (const auto &part
: parts
)
2414 compute_variant_fields_inner (type
, addr_stack
, part
, flags
);
2416 resolved_type
->set_num_fields
2417 (std::count (flags
.begin (), flags
.end (), true));
2418 resolved_type
->set_fields
2420 TYPE_ALLOC (resolved_type
,
2421 resolved_type
->num_fields () * sizeof (struct field
)));
2424 for (int i
= 0; i
< type
->num_fields (); ++i
)
2429 resolved_type
->field (out
) = type
->field (i
);
2434 /* Resolve dynamic bounds of members of the struct TYPE to static
2435 bounds. ADDR_STACK is a stack of struct property_addr_info to
2436 be used if needed during the dynamic resolution. */
2438 static struct type
*
2439 resolve_dynamic_struct (struct type
*type
,
2440 struct property_addr_info
*addr_stack
)
2442 struct type
*resolved_type
;
2444 unsigned resolved_type_bit_length
= 0;
2446 gdb_assert (type
->code () == TYPE_CODE_STRUCT
);
2447 gdb_assert (type
->num_fields () > 0);
2449 resolved_type
= copy_type (type
);
2451 dynamic_prop
*variant_prop
= resolved_type
->dyn_prop (DYN_PROP_VARIANT_PARTS
);
2452 if (variant_prop
!= nullptr && variant_prop
->kind
== PROP_VARIANT_PARTS
)
2454 compute_variant_fields (type
, resolved_type
, addr_stack
,
2455 *variant_prop
->data
.variant_parts
);
2456 /* We want to leave the property attached, so that the Rust code
2457 can tell whether the type was originally an enum. */
2458 variant_prop
->kind
= PROP_TYPE
;
2459 variant_prop
->data
.original_type
= type
;
2463 resolved_type
->set_fields
2465 TYPE_ALLOC (resolved_type
,
2466 resolved_type
->num_fields () * sizeof (struct field
)));
2467 memcpy (resolved_type
->fields (),
2469 resolved_type
->num_fields () * sizeof (struct field
));
2472 for (i
= 0; i
< resolved_type
->num_fields (); ++i
)
2474 unsigned new_bit_length
;
2475 struct property_addr_info pinfo
;
2477 if (field_is_static (&resolved_type
->field (i
)))
2480 if (TYPE_FIELD_LOC_KIND (resolved_type
, i
) == FIELD_LOC_KIND_DWARF_BLOCK
)
2482 struct dwarf2_property_baton baton
;
2484 = lookup_pointer_type (resolved_type
->field (i
).type ());
2485 baton
.locexpr
= *TYPE_FIELD_DWARF_BLOCK (resolved_type
, i
);
2487 struct dynamic_prop prop
;
2488 prop
.kind
= PROP_LOCEXPR
;
2489 prop
.data
.baton
= &baton
;
2492 if (dwarf2_evaluate_property (&prop
, nullptr, addr_stack
, &addr
,
2494 SET_FIELD_BITPOS (resolved_type
->field (i
),
2495 TARGET_CHAR_BIT
* (addr
- addr_stack
->addr
));
2498 /* As we know this field is not a static field, the field's
2499 field_loc_kind should be FIELD_LOC_KIND_BITPOS. Verify
2500 this is the case, but only trigger a simple error rather
2501 than an internal error if that fails. While failing
2502 that verification indicates a bug in our code, the error
2503 is not severe enough to suggest to the user he stops
2504 his debugging session because of it. */
2505 if (TYPE_FIELD_LOC_KIND (resolved_type
, i
) != FIELD_LOC_KIND_BITPOS
)
2506 error (_("Cannot determine struct field location"
2507 " (invalid location kind)"));
2509 pinfo
.type
= check_typedef (resolved_type
->field (i
).type ());
2510 pinfo
.valaddr
= addr_stack
->valaddr
;
2513 + (TYPE_FIELD_BITPOS (resolved_type
, i
) / TARGET_CHAR_BIT
));
2514 pinfo
.next
= addr_stack
;
2516 resolved_type
->field (i
).set_type
2517 (resolve_dynamic_type_internal (resolved_type
->field (i
).type (),
2519 gdb_assert (TYPE_FIELD_LOC_KIND (resolved_type
, i
)
2520 == FIELD_LOC_KIND_BITPOS
);
2522 new_bit_length
= TYPE_FIELD_BITPOS (resolved_type
, i
);
2523 if (TYPE_FIELD_BITSIZE (resolved_type
, i
) != 0)
2524 new_bit_length
+= TYPE_FIELD_BITSIZE (resolved_type
, i
);
2527 struct type
*real_type
2528 = check_typedef (resolved_type
->field (i
).type ());
2530 new_bit_length
+= (TYPE_LENGTH (real_type
) * TARGET_CHAR_BIT
);
2533 /* Normally, we would use the position and size of the last field
2534 to determine the size of the enclosing structure. But GCC seems
2535 to be encoding the position of some fields incorrectly when
2536 the struct contains a dynamic field that is not placed last.
2537 So we compute the struct size based on the field that has
2538 the highest position + size - probably the best we can do. */
2539 if (new_bit_length
> resolved_type_bit_length
)
2540 resolved_type_bit_length
= new_bit_length
;
2543 /* The length of a type won't change for fortran, but it does for C and Ada.
2544 For fortran the size of dynamic fields might change over time but not the
2545 type length of the structure. If we adapt it, we run into problems
2546 when calculating the element offset for arrays of structs. */
2547 if (current_language
->la_language
!= language_fortran
)
2548 TYPE_LENGTH (resolved_type
)
2549 = (resolved_type_bit_length
+ TARGET_CHAR_BIT
- 1) / TARGET_CHAR_BIT
;
2551 /* The Ada language uses this field as a cache for static fixed types: reset
2552 it as RESOLVED_TYPE must have its own static fixed type. */
2553 TYPE_TARGET_TYPE (resolved_type
) = NULL
;
2555 return resolved_type
;
2558 /* Worker for resolved_dynamic_type. */
2560 static struct type
*
2561 resolve_dynamic_type_internal (struct type
*type
,
2562 struct property_addr_info
*addr_stack
,
2565 struct type
*real_type
= check_typedef (type
);
2566 struct type
*resolved_type
= nullptr;
2567 struct dynamic_prop
*prop
;
2570 if (!is_dynamic_type_internal (real_type
, top_level
))
2573 gdb::optional
<CORE_ADDR
> type_length
;
2574 prop
= TYPE_DYNAMIC_LENGTH (type
);
2576 && dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2577 type_length
= value
;
2579 if (type
->code () == TYPE_CODE_TYPEDEF
)
2581 resolved_type
= copy_type (type
);
2582 TYPE_TARGET_TYPE (resolved_type
)
2583 = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (type
), addr_stack
,
2588 /* Before trying to resolve TYPE, make sure it is not a stub. */
2591 switch (type
->code ())
2595 struct property_addr_info pinfo
;
2597 pinfo
.type
= check_typedef (TYPE_TARGET_TYPE (type
));
2599 if (addr_stack
->valaddr
.data () != NULL
)
2600 pinfo
.addr
= extract_typed_address (addr_stack
->valaddr
.data (),
2603 pinfo
.addr
= read_memory_typed_address (addr_stack
->addr
, type
);
2604 pinfo
.next
= addr_stack
;
2606 resolved_type
= copy_type (type
);
2607 TYPE_TARGET_TYPE (resolved_type
)
2608 = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (type
),
2613 case TYPE_CODE_STRING
:
2614 /* Strings are very much like an array of characters, and can be
2615 treated as one here. */
2616 case TYPE_CODE_ARRAY
:
2617 resolved_type
= resolve_dynamic_array_or_string (type
, addr_stack
);
2620 case TYPE_CODE_RANGE
:
2621 resolved_type
= resolve_dynamic_range (type
, addr_stack
);
2624 case TYPE_CODE_UNION
:
2625 resolved_type
= resolve_dynamic_union (type
, addr_stack
);
2628 case TYPE_CODE_STRUCT
:
2629 resolved_type
= resolve_dynamic_struct (type
, addr_stack
);
2634 if (resolved_type
== nullptr)
2637 if (type_length
.has_value ())
2639 TYPE_LENGTH (resolved_type
) = *type_length
;
2640 resolved_type
->remove_dyn_prop (DYN_PROP_BYTE_SIZE
);
2643 /* Resolve data_location attribute. */
2644 prop
= TYPE_DATA_LOCATION (resolved_type
);
2646 && dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2648 TYPE_DYN_PROP_ADDR (prop
) = value
;
2649 TYPE_DYN_PROP_KIND (prop
) = PROP_CONST
;
2652 return resolved_type
;
2655 /* See gdbtypes.h */
2658 resolve_dynamic_type (struct type
*type
,
2659 gdb::array_view
<const gdb_byte
> valaddr
,
2662 struct property_addr_info pinfo
2663 = {check_typedef (type
), valaddr
, addr
, NULL
};
2665 return resolve_dynamic_type_internal (type
, &pinfo
, 1);
2668 /* See gdbtypes.h */
2671 type::dyn_prop (dynamic_prop_node_kind prop_kind
) const
2673 dynamic_prop_list
*node
= this->main_type
->dyn_prop_list
;
2675 while (node
!= NULL
)
2677 if (node
->prop_kind
== prop_kind
)
2684 /* See gdbtypes.h */
2687 type::add_dyn_prop (dynamic_prop_node_kind prop_kind
, dynamic_prop prop
)
2689 struct dynamic_prop_list
*temp
;
2691 gdb_assert (TYPE_OBJFILE_OWNED (this));
2693 temp
= XOBNEW (&TYPE_OBJFILE (this)->objfile_obstack
,
2694 struct dynamic_prop_list
);
2695 temp
->prop_kind
= prop_kind
;
2697 temp
->next
= this->main_type
->dyn_prop_list
;
2699 this->main_type
->dyn_prop_list
= temp
;
2702 /* See gdbtypes.h. */
2705 type::remove_dyn_prop (dynamic_prop_node_kind kind
)
2707 struct dynamic_prop_list
*prev_node
, *curr_node
;
2709 curr_node
= this->main_type
->dyn_prop_list
;
2712 while (NULL
!= curr_node
)
2714 if (curr_node
->prop_kind
== kind
)
2716 /* Update the linked list but don't free anything.
2717 The property was allocated on objstack and it is not known
2718 if we are on top of it. Nevertheless, everything is released
2719 when the complete objstack is freed. */
2720 if (NULL
== prev_node
)
2721 this->main_type
->dyn_prop_list
= curr_node
->next
;
2723 prev_node
->next
= curr_node
->next
;
2728 prev_node
= curr_node
;
2729 curr_node
= curr_node
->next
;
2733 /* Find the real type of TYPE. This function returns the real type,
2734 after removing all layers of typedefs, and completing opaque or stub
2735 types. Completion changes the TYPE argument, but stripping of
2738 Instance flags (e.g. const/volatile) are preserved as typedefs are
2739 stripped. If necessary a new qualified form of the underlying type
2742 NOTE: This will return a typedef if TYPE_TARGET_TYPE for the typedef has
2743 not been computed and we're either in the middle of reading symbols, or
2744 there was no name for the typedef in the debug info.
2746 NOTE: Lookup of opaque types can throw errors for invalid symbol files.
2747 QUITs in the symbol reading code can also throw.
2748 Thus this function can throw an exception.
2750 If TYPE is a TYPE_CODE_TYPEDEF, its length is updated to the length of
2753 If this is a stubbed struct (i.e. declared as struct foo *), see if
2754 we can find a full definition in some other file. If so, copy this
2755 definition, so we can use it in future. There used to be a comment
2756 (but not any code) that if we don't find a full definition, we'd
2757 set a flag so we don't spend time in the future checking the same
2758 type. That would be a mistake, though--we might load in more
2759 symbols which contain a full definition for the type. */
2762 check_typedef (struct type
*type
)
2764 struct type
*orig_type
= type
;
2765 /* While we're removing typedefs, we don't want to lose qualifiers.
2766 E.g., const/volatile. */
2767 int instance_flags
= TYPE_INSTANCE_FLAGS (type
);
2771 while (type
->code () == TYPE_CODE_TYPEDEF
)
2773 if (!TYPE_TARGET_TYPE (type
))
2778 /* It is dangerous to call lookup_symbol if we are currently
2779 reading a symtab. Infinite recursion is one danger. */
2780 if (currently_reading_symtab
)
2781 return make_qualified_type (type
, instance_flags
, NULL
);
2783 name
= type
->name ();
2784 /* FIXME: shouldn't we look in STRUCT_DOMAIN and/or
2785 VAR_DOMAIN as appropriate? */
2788 stub_noname_complaint ();
2789 return make_qualified_type (type
, instance_flags
, NULL
);
2791 sym
= lookup_symbol (name
, 0, STRUCT_DOMAIN
, 0).symbol
;
2793 TYPE_TARGET_TYPE (type
) = SYMBOL_TYPE (sym
);
2794 else /* TYPE_CODE_UNDEF */
2795 TYPE_TARGET_TYPE (type
) = alloc_type_arch (get_type_arch (type
));
2797 type
= TYPE_TARGET_TYPE (type
);
2799 /* Preserve the instance flags as we traverse down the typedef chain.
2801 Handling address spaces/classes is nasty, what do we do if there's a
2803 E.g., what if an outer typedef marks the type as class_1 and an inner
2804 typedef marks the type as class_2?
2805 This is the wrong place to do such error checking. We leave it to
2806 the code that created the typedef in the first place to flag the
2807 error. We just pick the outer address space (akin to letting the
2808 outer cast in a chain of casting win), instead of assuming
2809 "it can't happen". */
2811 const int ALL_SPACES
= (TYPE_INSTANCE_FLAG_CODE_SPACE
2812 | TYPE_INSTANCE_FLAG_DATA_SPACE
);
2813 const int ALL_CLASSES
= TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL
;
2814 int new_instance_flags
= TYPE_INSTANCE_FLAGS (type
);
2816 /* Treat code vs data spaces and address classes separately. */
2817 if ((instance_flags
& ALL_SPACES
) != 0)
2818 new_instance_flags
&= ~ALL_SPACES
;
2819 if ((instance_flags
& ALL_CLASSES
) != 0)
2820 new_instance_flags
&= ~ALL_CLASSES
;
2822 instance_flags
|= new_instance_flags
;
2826 /* If this is a struct/class/union with no fields, then check
2827 whether a full definition exists somewhere else. This is for
2828 systems where a type definition with no fields is issued for such
2829 types, instead of identifying them as stub types in the first
2832 if (TYPE_IS_OPAQUE (type
)
2833 && opaque_type_resolution
2834 && !currently_reading_symtab
)
2836 const char *name
= type
->name ();
2837 struct type
*newtype
;
2841 stub_noname_complaint ();
2842 return make_qualified_type (type
, instance_flags
, NULL
);
2844 newtype
= lookup_transparent_type (name
);
2848 /* If the resolved type and the stub are in the same
2849 objfile, then replace the stub type with the real deal.
2850 But if they're in separate objfiles, leave the stub
2851 alone; we'll just look up the transparent type every time
2852 we call check_typedef. We can't create pointers between
2853 types allocated to different objfiles, since they may
2854 have different lifetimes. Trying to copy NEWTYPE over to
2855 TYPE's objfile is pointless, too, since you'll have to
2856 move over any other types NEWTYPE refers to, which could
2857 be an unbounded amount of stuff. */
2858 if (TYPE_OBJFILE (newtype
) == TYPE_OBJFILE (type
))
2859 type
= make_qualified_type (newtype
,
2860 TYPE_INSTANCE_FLAGS (type
),
2866 /* Otherwise, rely on the stub flag being set for opaque/stubbed
2868 else if (TYPE_STUB (type
) && !currently_reading_symtab
)
2870 const char *name
= type
->name ();
2871 /* FIXME: shouldn't we look in STRUCT_DOMAIN and/or VAR_DOMAIN
2877 stub_noname_complaint ();
2878 return make_qualified_type (type
, instance_flags
, NULL
);
2880 sym
= lookup_symbol (name
, 0, STRUCT_DOMAIN
, 0).symbol
;
2883 /* Same as above for opaque types, we can replace the stub
2884 with the complete type only if they are in the same
2886 if (TYPE_OBJFILE (SYMBOL_TYPE (sym
)) == TYPE_OBJFILE (type
))
2887 type
= make_qualified_type (SYMBOL_TYPE (sym
),
2888 TYPE_INSTANCE_FLAGS (type
),
2891 type
= SYMBOL_TYPE (sym
);
2895 if (TYPE_TARGET_STUB (type
))
2897 struct type
*target_type
= check_typedef (TYPE_TARGET_TYPE (type
));
2899 if (TYPE_STUB (target_type
) || TYPE_TARGET_STUB (target_type
))
2901 /* Nothing we can do. */
2903 else if (type
->code () == TYPE_CODE_RANGE
)
2905 TYPE_LENGTH (type
) = TYPE_LENGTH (target_type
);
2906 TYPE_TARGET_STUB (type
) = 0;
2908 else if (type
->code () == TYPE_CODE_ARRAY
2909 && update_static_array_size (type
))
2910 TYPE_TARGET_STUB (type
) = 0;
2913 type
= make_qualified_type (type
, instance_flags
, NULL
);
2915 /* Cache TYPE_LENGTH for future use. */
2916 TYPE_LENGTH (orig_type
) = TYPE_LENGTH (type
);
2921 /* Parse a type expression in the string [P..P+LENGTH). If an error
2922 occurs, silently return a void type. */
2924 static struct type
*
2925 safe_parse_type (struct gdbarch
*gdbarch
, char *p
, int length
)
2927 struct ui_file
*saved_gdb_stderr
;
2928 struct type
*type
= NULL
; /* Initialize to keep gcc happy. */
2930 /* Suppress error messages. */
2931 saved_gdb_stderr
= gdb_stderr
;
2932 gdb_stderr
= &null_stream
;
2934 /* Call parse_and_eval_type() without fear of longjmp()s. */
2937 type
= parse_and_eval_type (p
, length
);
2939 catch (const gdb_exception_error
&except
)
2941 type
= builtin_type (gdbarch
)->builtin_void
;
2944 /* Stop suppressing error messages. */
2945 gdb_stderr
= saved_gdb_stderr
;
2950 /* Ugly hack to convert method stubs into method types.
2952 He ain't kiddin'. This demangles the name of the method into a
2953 string including argument types, parses out each argument type,
2954 generates a string casting a zero to that type, evaluates the
2955 string, and stuffs the resulting type into an argtype vector!!!
2956 Then it knows the type of the whole function (including argument
2957 types for overloading), which info used to be in the stab's but was
2958 removed to hack back the space required for them. */
2961 check_stub_method (struct type
*type
, int method_id
, int signature_id
)
2963 struct gdbarch
*gdbarch
= get_type_arch (type
);
2965 char *mangled_name
= gdb_mangle_name (type
, method_id
, signature_id
);
2966 char *demangled_name
= gdb_demangle (mangled_name
,
2967 DMGL_PARAMS
| DMGL_ANSI
);
2968 char *argtypetext
, *p
;
2969 int depth
= 0, argcount
= 1;
2970 struct field
*argtypes
;
2973 /* Make sure we got back a function string that we can use. */
2975 p
= strchr (demangled_name
, '(');
2979 if (demangled_name
== NULL
|| p
== NULL
)
2980 error (_("Internal: Cannot demangle mangled name `%s'."),
2983 /* Now, read in the parameters that define this type. */
2988 if (*p
== '(' || *p
== '<')
2992 else if (*p
== ')' || *p
== '>')
2996 else if (*p
== ',' && depth
== 0)
3004 /* If we read one argument and it was ``void'', don't count it. */
3005 if (startswith (argtypetext
, "(void)"))
3008 /* We need one extra slot, for the THIS pointer. */
3010 argtypes
= (struct field
*)
3011 TYPE_ALLOC (type
, (argcount
+ 1) * sizeof (struct field
));
3014 /* Add THIS pointer for non-static methods. */
3015 f
= TYPE_FN_FIELDLIST1 (type
, method_id
);
3016 if (TYPE_FN_FIELD_STATIC_P (f
, signature_id
))
3020 argtypes
[0].set_type (lookup_pointer_type (type
));
3024 if (*p
!= ')') /* () means no args, skip while. */
3029 if (depth
<= 0 && (*p
== ',' || *p
== ')'))
3031 /* Avoid parsing of ellipsis, they will be handled below.
3032 Also avoid ``void'' as above. */
3033 if (strncmp (argtypetext
, "...", p
- argtypetext
) != 0
3034 && strncmp (argtypetext
, "void", p
- argtypetext
) != 0)
3036 argtypes
[argcount
].set_type
3037 (safe_parse_type (gdbarch
, argtypetext
, p
- argtypetext
));
3040 argtypetext
= p
+ 1;
3043 if (*p
== '(' || *p
== '<')
3047 else if (*p
== ')' || *p
== '>')
3056 TYPE_FN_FIELD_PHYSNAME (f
, signature_id
) = mangled_name
;
3058 /* Now update the old "stub" type into a real type. */
3059 mtype
= TYPE_FN_FIELD_TYPE (f
, signature_id
);
3060 /* MTYPE may currently be a function (TYPE_CODE_FUNC).
3061 We want a method (TYPE_CODE_METHOD). */
3062 smash_to_method_type (mtype
, type
, TYPE_TARGET_TYPE (mtype
),
3063 argtypes
, argcount
, p
[-2] == '.');
3064 TYPE_STUB (mtype
) = 0;
3065 TYPE_FN_FIELD_STUB (f
, signature_id
) = 0;
3067 xfree (demangled_name
);
3070 /* This is the external interface to check_stub_method, above. This
3071 function unstubs all of the signatures for TYPE's METHOD_ID method
3072 name. After calling this function TYPE_FN_FIELD_STUB will be
3073 cleared for each signature and TYPE_FN_FIELDLIST_NAME will be
3076 This function unfortunately can not die until stabs do. */
3079 check_stub_method_group (struct type
*type
, int method_id
)
3081 int len
= TYPE_FN_FIELDLIST_LENGTH (type
, method_id
);
3082 struct fn_field
*f
= TYPE_FN_FIELDLIST1 (type
, method_id
);
3084 for (int j
= 0; j
< len
; j
++)
3086 if (TYPE_FN_FIELD_STUB (f
, j
))
3087 check_stub_method (type
, method_id
, j
);
3091 /* Ensure it is in .rodata (if available) by working around GCC PR 44690. */
3092 const struct cplus_struct_type cplus_struct_default
= { };
3095 allocate_cplus_struct_type (struct type
*type
)
3097 if (HAVE_CPLUS_STRUCT (type
))
3098 /* Structure was already allocated. Nothing more to do. */
3101 TYPE_SPECIFIC_FIELD (type
) = TYPE_SPECIFIC_CPLUS_STUFF
;
3102 TYPE_RAW_CPLUS_SPECIFIC (type
) = (struct cplus_struct_type
*)
3103 TYPE_ALLOC (type
, sizeof (struct cplus_struct_type
));
3104 *(TYPE_RAW_CPLUS_SPECIFIC (type
)) = cplus_struct_default
;
3105 set_type_vptr_fieldno (type
, -1);
3108 const struct gnat_aux_type gnat_aux_default
=
3111 /* Set the TYPE's type-specific kind to TYPE_SPECIFIC_GNAT_STUFF,
3112 and allocate the associated gnat-specific data. The gnat-specific
3113 data is also initialized to gnat_aux_default. */
3116 allocate_gnat_aux_type (struct type
*type
)
3118 TYPE_SPECIFIC_FIELD (type
) = TYPE_SPECIFIC_GNAT_STUFF
;
3119 TYPE_GNAT_SPECIFIC (type
) = (struct gnat_aux_type
*)
3120 TYPE_ALLOC (type
, sizeof (struct gnat_aux_type
));
3121 *(TYPE_GNAT_SPECIFIC (type
)) = gnat_aux_default
;
3124 /* Helper function to initialize a newly allocated type. Set type code
3125 to CODE and initialize the type-specific fields accordingly. */
3128 set_type_code (struct type
*type
, enum type_code code
)
3130 type
->set_code (code
);
3134 case TYPE_CODE_STRUCT
:
3135 case TYPE_CODE_UNION
:
3136 case TYPE_CODE_NAMESPACE
:
3137 INIT_CPLUS_SPECIFIC (type
);
3140 TYPE_SPECIFIC_FIELD (type
) = TYPE_SPECIFIC_FLOATFORMAT
;
3142 case TYPE_CODE_FUNC
:
3143 INIT_FUNC_SPECIFIC (type
);
3148 /* Helper function to verify floating-point format and size.
3149 BIT is the type size in bits; if BIT equals -1, the size is
3150 determined by the floatformat. Returns size to be used. */
3153 verify_floatformat (int bit
, const struct floatformat
*floatformat
)
3155 gdb_assert (floatformat
!= NULL
);
3158 bit
= floatformat
->totalsize
;
3160 gdb_assert (bit
>= 0);
3161 gdb_assert (bit
>= floatformat
->totalsize
);
3166 /* Return the floating-point format for a floating-point variable of
3169 const struct floatformat
*
3170 floatformat_from_type (const struct type
*type
)
3172 gdb_assert (type
->code () == TYPE_CODE_FLT
);
3173 gdb_assert (TYPE_FLOATFORMAT (type
));
3174 return TYPE_FLOATFORMAT (type
);
3177 /* Helper function to initialize the standard scalar types.
3179 If NAME is non-NULL, then it is used to initialize the type name.
3180 Note that NAME is not copied; it is required to have a lifetime at
3181 least as long as OBJFILE. */
3184 init_type (struct objfile
*objfile
, enum type_code code
, int bit
,
3189 type
= alloc_type (objfile
);
3190 set_type_code (type
, code
);
3191 gdb_assert ((bit
% TARGET_CHAR_BIT
) == 0);
3192 TYPE_LENGTH (type
) = bit
/ TARGET_CHAR_BIT
;
3193 type
->set_name (name
);
3198 /* Allocate a TYPE_CODE_ERROR type structure associated with OBJFILE,
3199 to use with variables that have no debug info. NAME is the type
3202 static struct type
*
3203 init_nodebug_var_type (struct objfile
*objfile
, const char *name
)
3205 return init_type (objfile
, TYPE_CODE_ERROR
, 0, name
);
3208 /* Allocate a TYPE_CODE_INT type structure associated with OBJFILE.
3209 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
3210 the type's TYPE_UNSIGNED flag. NAME is the type name. */
3213 init_integer_type (struct objfile
*objfile
,
3214 int bit
, int unsigned_p
, const char *name
)
3218 t
= init_type (objfile
, TYPE_CODE_INT
, bit
, name
);
3220 TYPE_UNSIGNED (t
) = 1;
3225 /* Allocate a TYPE_CODE_CHAR type structure associated with OBJFILE.
3226 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
3227 the type's TYPE_UNSIGNED flag. NAME is the type name. */
3230 init_character_type (struct objfile
*objfile
,
3231 int bit
, int unsigned_p
, const char *name
)
3235 t
= init_type (objfile
, TYPE_CODE_CHAR
, bit
, name
);
3237 TYPE_UNSIGNED (t
) = 1;
3242 /* Allocate a TYPE_CODE_BOOL type structure associated with OBJFILE.
3243 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
3244 the type's TYPE_UNSIGNED flag. NAME is the type name. */
3247 init_boolean_type (struct objfile
*objfile
,
3248 int bit
, int unsigned_p
, const char *name
)
3252 t
= init_type (objfile
, TYPE_CODE_BOOL
, bit
, name
);
3254 TYPE_UNSIGNED (t
) = 1;
3259 /* Allocate a TYPE_CODE_FLT type structure associated with OBJFILE.
3260 BIT is the type size in bits; if BIT equals -1, the size is
3261 determined by the floatformat. NAME is the type name. Set the
3262 TYPE_FLOATFORMAT from FLOATFORMATS. BYTE_ORDER is the byte order
3263 to use. If it is BFD_ENDIAN_UNKNOWN (the default), then the byte
3264 order of the objfile's architecture is used. */
3267 init_float_type (struct objfile
*objfile
,
3268 int bit
, const char *name
,
3269 const struct floatformat
**floatformats
,
3270 enum bfd_endian byte_order
)
3272 if (byte_order
== BFD_ENDIAN_UNKNOWN
)
3274 struct gdbarch
*gdbarch
= objfile
->arch ();
3275 byte_order
= gdbarch_byte_order (gdbarch
);
3277 const struct floatformat
*fmt
= floatformats
[byte_order
];
3280 bit
= verify_floatformat (bit
, fmt
);
3281 t
= init_type (objfile
, TYPE_CODE_FLT
, bit
, name
);
3282 TYPE_FLOATFORMAT (t
) = fmt
;
3287 /* Allocate a TYPE_CODE_DECFLOAT type structure associated with OBJFILE.
3288 BIT is the type size in bits. NAME is the type name. */
3291 init_decfloat_type (struct objfile
*objfile
, int bit
, const char *name
)
3295 t
= init_type (objfile
, TYPE_CODE_DECFLOAT
, bit
, name
);
3299 /* Allocate a TYPE_CODE_COMPLEX type structure. NAME is the type
3300 name. TARGET_TYPE is the component type. */
3303 init_complex_type (const char *name
, struct type
*target_type
)
3307 gdb_assert (target_type
->code () == TYPE_CODE_INT
3308 || target_type
->code () == TYPE_CODE_FLT
);
3310 if (TYPE_MAIN_TYPE (target_type
)->flds_bnds
.complex_type
== nullptr)
3312 if (name
== nullptr)
3315 = (char *) TYPE_ALLOC (target_type
,
3316 strlen (target_type
->name ())
3317 + strlen ("_Complex ") + 1);
3318 strcpy (new_name
, "_Complex ");
3319 strcat (new_name
, target_type
->name ());
3323 t
= alloc_type_copy (target_type
);
3324 set_type_code (t
, TYPE_CODE_COMPLEX
);
3325 TYPE_LENGTH (t
) = 2 * TYPE_LENGTH (target_type
);
3328 TYPE_TARGET_TYPE (t
) = target_type
;
3329 TYPE_MAIN_TYPE (target_type
)->flds_bnds
.complex_type
= t
;
3332 return TYPE_MAIN_TYPE (target_type
)->flds_bnds
.complex_type
;
3335 /* Allocate a TYPE_CODE_PTR type structure associated with OBJFILE.
3336 BIT is the pointer type size in bits. NAME is the type name.
3337 TARGET_TYPE is the pointer target type. Always sets the pointer type's
3338 TYPE_UNSIGNED flag. */
3341 init_pointer_type (struct objfile
*objfile
,
3342 int bit
, const char *name
, struct type
*target_type
)
3346 t
= init_type (objfile
, TYPE_CODE_PTR
, bit
, name
);
3347 TYPE_TARGET_TYPE (t
) = target_type
;
3348 TYPE_UNSIGNED (t
) = 1;
3352 /* See gdbtypes.h. */
3355 type_raw_align (struct type
*type
)
3357 if (type
->align_log2
!= 0)
3358 return 1 << (type
->align_log2
- 1);
3362 /* See gdbtypes.h. */
3365 type_align (struct type
*type
)
3367 /* Check alignment provided in the debug information. */
3368 unsigned raw_align
= type_raw_align (type
);
3372 /* Allow the architecture to provide an alignment. */
3373 struct gdbarch
*arch
= get_type_arch (type
);
3374 ULONGEST align
= gdbarch_type_align (arch
, type
);
3378 switch (type
->code ())
3381 case TYPE_CODE_FUNC
:
3382 case TYPE_CODE_FLAGS
:
3384 case TYPE_CODE_RANGE
:
3386 case TYPE_CODE_ENUM
:
3388 case TYPE_CODE_RVALUE_REF
:
3389 case TYPE_CODE_CHAR
:
3390 case TYPE_CODE_BOOL
:
3391 case TYPE_CODE_DECFLOAT
:
3392 case TYPE_CODE_METHODPTR
:
3393 case TYPE_CODE_MEMBERPTR
:
3394 align
= type_length_units (check_typedef (type
));
3397 case TYPE_CODE_ARRAY
:
3398 case TYPE_CODE_COMPLEX
:
3399 case TYPE_CODE_TYPEDEF
:
3400 align
= type_align (TYPE_TARGET_TYPE (type
));
3403 case TYPE_CODE_STRUCT
:
3404 case TYPE_CODE_UNION
:
3406 int number_of_non_static_fields
= 0;
3407 for (unsigned i
= 0; i
< type
->num_fields (); ++i
)
3409 if (!field_is_static (&type
->field (i
)))
3411 number_of_non_static_fields
++;
3412 ULONGEST f_align
= type_align (type
->field (i
).type ());
3415 /* Don't pretend we know something we don't. */
3419 if (f_align
> align
)
3423 /* A struct with no fields, or with only static fields has an
3425 if (number_of_non_static_fields
== 0)
3431 case TYPE_CODE_STRING
:
3432 /* Not sure what to do here, and these can't appear in C or C++
3436 case TYPE_CODE_VOID
:
3440 case TYPE_CODE_ERROR
:
3441 case TYPE_CODE_METHOD
:
3446 if ((align
& (align
- 1)) != 0)
3448 /* Not a power of 2, so pass. */
3455 /* See gdbtypes.h. */
3458 set_type_align (struct type
*type
, ULONGEST align
)
3460 /* Must be a power of 2. Zero is ok. */
3461 gdb_assert ((align
& (align
- 1)) == 0);
3463 unsigned result
= 0;
3470 if (result
>= (1 << TYPE_ALIGN_BITS
))
3473 type
->align_log2
= result
;
3478 /* Queries on types. */
3481 can_dereference (struct type
*t
)
3483 /* FIXME: Should we return true for references as well as
3485 t
= check_typedef (t
);
3488 && t
->code () == TYPE_CODE_PTR
3489 && TYPE_TARGET_TYPE (t
)->code () != TYPE_CODE_VOID
);
3493 is_integral_type (struct type
*t
)
3495 t
= check_typedef (t
);
3498 && ((t
->code () == TYPE_CODE_INT
)
3499 || (t
->code () == TYPE_CODE_ENUM
)
3500 || (t
->code () == TYPE_CODE_FLAGS
)
3501 || (t
->code () == TYPE_CODE_CHAR
)
3502 || (t
->code () == TYPE_CODE_RANGE
)
3503 || (t
->code () == TYPE_CODE_BOOL
)));
3507 is_floating_type (struct type
*t
)
3509 t
= check_typedef (t
);
3512 && ((t
->code () == TYPE_CODE_FLT
)
3513 || (t
->code () == TYPE_CODE_DECFLOAT
)));
3516 /* Return true if TYPE is scalar. */
3519 is_scalar_type (struct type
*type
)
3521 type
= check_typedef (type
);
3523 switch (type
->code ())
3525 case TYPE_CODE_ARRAY
:
3526 case TYPE_CODE_STRUCT
:
3527 case TYPE_CODE_UNION
:
3529 case TYPE_CODE_STRING
:
3536 /* Return true if T is scalar, or a composite type which in practice has
3537 the memory layout of a scalar type. E.g., an array or struct with only
3538 one scalar element inside it, or a union with only scalar elements. */
3541 is_scalar_type_recursive (struct type
*t
)
3543 t
= check_typedef (t
);
3545 if (is_scalar_type (t
))
3547 /* Are we dealing with an array or string of known dimensions? */
3548 else if ((t
->code () == TYPE_CODE_ARRAY
3549 || t
->code () == TYPE_CODE_STRING
) && t
->num_fields () == 1
3550 && t
->index_type ()->code () == TYPE_CODE_RANGE
)
3552 LONGEST low_bound
, high_bound
;
3553 struct type
*elt_type
= check_typedef (TYPE_TARGET_TYPE (t
));
3555 get_discrete_bounds (t
->index_type (), &low_bound
, &high_bound
);
3557 return high_bound
== low_bound
&& is_scalar_type_recursive (elt_type
);
3559 /* Are we dealing with a struct with one element? */
3560 else if (t
->code () == TYPE_CODE_STRUCT
&& t
->num_fields () == 1)
3561 return is_scalar_type_recursive (t
->field (0).type ());
3562 else if (t
->code () == TYPE_CODE_UNION
)
3564 int i
, n
= t
->num_fields ();
3566 /* If all elements of the union are scalar, then the union is scalar. */
3567 for (i
= 0; i
< n
; i
++)
3568 if (!is_scalar_type_recursive (t
->field (i
).type ()))
3577 /* Return true is T is a class or a union. False otherwise. */
3580 class_or_union_p (const struct type
*t
)
3582 return (t
->code () == TYPE_CODE_STRUCT
3583 || t
->code () == TYPE_CODE_UNION
);
3586 /* A helper function which returns true if types A and B represent the
3587 "same" class type. This is true if the types have the same main
3588 type, or the same name. */
3591 class_types_same_p (const struct type
*a
, const struct type
*b
)
3593 return (TYPE_MAIN_TYPE (a
) == TYPE_MAIN_TYPE (b
)
3594 || (a
->name () && b
->name ()
3595 && !strcmp (a
->name (), b
->name ())));
3598 /* If BASE is an ancestor of DCLASS return the distance between them.
3599 otherwise return -1;
3603 class B: public A {};
3604 class C: public B {};
3607 distance_to_ancestor (A, A, 0) = 0
3608 distance_to_ancestor (A, B, 0) = 1
3609 distance_to_ancestor (A, C, 0) = 2
3610 distance_to_ancestor (A, D, 0) = 3
3612 If PUBLIC is 1 then only public ancestors are considered,
3613 and the function returns the distance only if BASE is a public ancestor
3617 distance_to_ancestor (A, D, 1) = -1. */
3620 distance_to_ancestor (struct type
*base
, struct type
*dclass
, int is_public
)
3625 base
= check_typedef (base
);
3626 dclass
= check_typedef (dclass
);
3628 if (class_types_same_p (base
, dclass
))
3631 for (i
= 0; i
< TYPE_N_BASECLASSES (dclass
); i
++)
3633 if (is_public
&& ! BASETYPE_VIA_PUBLIC (dclass
, i
))
3636 d
= distance_to_ancestor (base
, TYPE_BASECLASS (dclass
, i
), is_public
);
3644 /* Check whether BASE is an ancestor or base class or DCLASS
3645 Return 1 if so, and 0 if not.
3646 Note: If BASE and DCLASS are of the same type, this function
3647 will return 1. So for some class A, is_ancestor (A, A) will
3651 is_ancestor (struct type
*base
, struct type
*dclass
)
3653 return distance_to_ancestor (base
, dclass
, 0) >= 0;
3656 /* Like is_ancestor, but only returns true when BASE is a public
3657 ancestor of DCLASS. */
3660 is_public_ancestor (struct type
*base
, struct type
*dclass
)
3662 return distance_to_ancestor (base
, dclass
, 1) >= 0;
3665 /* A helper function for is_unique_ancestor. */
3668 is_unique_ancestor_worker (struct type
*base
, struct type
*dclass
,
3670 const gdb_byte
*valaddr
, int embedded_offset
,
3671 CORE_ADDR address
, struct value
*val
)
3675 base
= check_typedef (base
);
3676 dclass
= check_typedef (dclass
);
3678 for (i
= 0; i
< TYPE_N_BASECLASSES (dclass
) && count
< 2; ++i
)
3683 iter
= check_typedef (TYPE_BASECLASS (dclass
, i
));
3685 this_offset
= baseclass_offset (dclass
, i
, valaddr
, embedded_offset
,
3688 if (class_types_same_p (base
, iter
))
3690 /* If this is the first subclass, set *OFFSET and set count
3691 to 1. Otherwise, if this is at the same offset as
3692 previous instances, do nothing. Otherwise, increment
3696 *offset
= this_offset
;
3699 else if (this_offset
== *offset
)
3707 count
+= is_unique_ancestor_worker (base
, iter
, offset
,
3709 embedded_offset
+ this_offset
,
3716 /* Like is_ancestor, but only returns true if BASE is a unique base
3717 class of the type of VAL. */
3720 is_unique_ancestor (struct type
*base
, struct value
*val
)
3724 return is_unique_ancestor_worker (base
, value_type (val
), &offset
,
3725 value_contents_for_printing (val
),
3726 value_embedded_offset (val
),
3727 value_address (val
), val
) == 1;
3730 /* See gdbtypes.h. */
3733 type_byte_order (const struct type
*type
)
3735 bfd_endian byteorder
= gdbarch_byte_order (get_type_arch (type
));
3736 if (TYPE_ENDIANITY_NOT_DEFAULT (type
))
3738 if (byteorder
== BFD_ENDIAN_BIG
)
3739 return BFD_ENDIAN_LITTLE
;
3742 gdb_assert (byteorder
== BFD_ENDIAN_LITTLE
);
3743 return BFD_ENDIAN_BIG
;
3751 /* Overload resolution. */
3753 /* Return the sum of the rank of A with the rank of B. */
3756 sum_ranks (struct rank a
, struct rank b
)
3759 c
.rank
= a
.rank
+ b
.rank
;
3760 c
.subrank
= a
.subrank
+ b
.subrank
;
3764 /* Compare rank A and B and return:
3766 1 if a is better than b
3767 -1 if b is better than a. */
3770 compare_ranks (struct rank a
, struct rank b
)
3772 if (a
.rank
== b
.rank
)
3774 if (a
.subrank
== b
.subrank
)
3776 if (a
.subrank
< b
.subrank
)
3778 if (a
.subrank
> b
.subrank
)
3782 if (a
.rank
< b
.rank
)
3785 /* a.rank > b.rank */
3789 /* Functions for overload resolution begin here. */
3791 /* Compare two badness vectors A and B and return the result.
3792 0 => A and B are identical
3793 1 => A and B are incomparable
3794 2 => A is better than B
3795 3 => A is worse than B */
3798 compare_badness (const badness_vector
&a
, const badness_vector
&b
)
3802 short found_pos
= 0; /* any positives in c? */
3803 short found_neg
= 0; /* any negatives in c? */
3805 /* differing sizes => incomparable */
3806 if (a
.size () != b
.size ())
3809 /* Subtract b from a */
3810 for (i
= 0; i
< a
.size (); i
++)
3812 tmp
= compare_ranks (b
[i
], a
[i
]);
3822 return 1; /* incomparable */
3824 return 3; /* A > B */
3830 return 2; /* A < B */
3832 return 0; /* A == B */
3836 /* Rank a function by comparing its parameter types (PARMS), to the
3837 types of an argument list (ARGS). Return the badness vector. This
3838 has ARGS.size() + 1 entries. */
3841 rank_function (gdb::array_view
<type
*> parms
,
3842 gdb::array_view
<value
*> args
)
3844 /* add 1 for the length-match rank. */
3846 bv
.reserve (1 + args
.size ());
3848 /* First compare the lengths of the supplied lists.
3849 If there is a mismatch, set it to a high value. */
3851 /* pai/1997-06-03 FIXME: when we have debug info about default
3852 arguments and ellipsis parameter lists, we should consider those
3853 and rank the length-match more finely. */
3855 bv
.push_back ((args
.size () != parms
.size ())
3856 ? LENGTH_MISMATCH_BADNESS
3857 : EXACT_MATCH_BADNESS
);
3859 /* Now rank all the parameters of the candidate function. */
3860 size_t min_len
= std::min (parms
.size (), args
.size ());
3862 for (size_t i
= 0; i
< min_len
; i
++)
3863 bv
.push_back (rank_one_type (parms
[i
], value_type (args
[i
]),
3866 /* If more arguments than parameters, add dummy entries. */
3867 for (size_t i
= min_len
; i
< args
.size (); i
++)
3868 bv
.push_back (TOO_FEW_PARAMS_BADNESS
);
3873 /* Compare the names of two integer types, assuming that any sign
3874 qualifiers have been checked already. We do it this way because
3875 there may be an "int" in the name of one of the types. */
3878 integer_types_same_name_p (const char *first
, const char *second
)
3880 int first_p
, second_p
;
3882 /* If both are shorts, return 1; if neither is a short, keep
3884 first_p
= (strstr (first
, "short") != NULL
);
3885 second_p
= (strstr (second
, "short") != NULL
);
3886 if (first_p
&& second_p
)
3888 if (first_p
|| second_p
)
3891 /* Likewise for long. */
3892 first_p
= (strstr (first
, "long") != NULL
);
3893 second_p
= (strstr (second
, "long") != NULL
);
3894 if (first_p
&& second_p
)
3896 if (first_p
|| second_p
)
3899 /* Likewise for char. */
3900 first_p
= (strstr (first
, "char") != NULL
);
3901 second_p
= (strstr (second
, "char") != NULL
);
3902 if (first_p
&& second_p
)
3904 if (first_p
|| second_p
)
3907 /* They must both be ints. */
3911 /* Compares type A to type B. Returns true if they represent the same
3912 type, false otherwise. */
3915 types_equal (struct type
*a
, struct type
*b
)
3917 /* Identical type pointers. */
3918 /* However, this still doesn't catch all cases of same type for b
3919 and a. The reason is that builtin types are different from
3920 the same ones constructed from the object. */
3924 /* Resolve typedefs */
3925 if (a
->code () == TYPE_CODE_TYPEDEF
)
3926 a
= check_typedef (a
);
3927 if (b
->code () == TYPE_CODE_TYPEDEF
)
3928 b
= check_typedef (b
);
3930 /* If after resolving typedefs a and b are not of the same type
3931 code then they are not equal. */
3932 if (a
->code () != b
->code ())
3935 /* If a and b are both pointers types or both reference types then
3936 they are equal of the same type iff the objects they refer to are
3937 of the same type. */
3938 if (a
->code () == TYPE_CODE_PTR
3939 || a
->code () == TYPE_CODE_REF
)
3940 return types_equal (TYPE_TARGET_TYPE (a
),
3941 TYPE_TARGET_TYPE (b
));
3943 /* Well, damnit, if the names are exactly the same, I'll say they
3944 are exactly the same. This happens when we generate method
3945 stubs. The types won't point to the same address, but they
3946 really are the same. */
3948 if (a
->name () && b
->name ()
3949 && strcmp (a
->name (), b
->name ()) == 0)
3952 /* Check if identical after resolving typedefs. */
3956 /* Two function types are equal if their argument and return types
3958 if (a
->code () == TYPE_CODE_FUNC
)
3962 if (a
->num_fields () != b
->num_fields ())
3965 if (!types_equal (TYPE_TARGET_TYPE (a
), TYPE_TARGET_TYPE (b
)))
3968 for (i
= 0; i
< a
->num_fields (); ++i
)
3969 if (!types_equal (a
->field (i
).type (), b
->field (i
).type ()))
3978 /* Deep comparison of types. */
3980 /* An entry in the type-equality bcache. */
3982 struct type_equality_entry
3984 type_equality_entry (struct type
*t1
, struct type
*t2
)
3990 struct type
*type1
, *type2
;
3993 /* A helper function to compare two strings. Returns true if they are
3994 the same, false otherwise. Handles NULLs properly. */
3997 compare_maybe_null_strings (const char *s
, const char *t
)
3999 if (s
== NULL
|| t
== NULL
)
4001 return strcmp (s
, t
) == 0;
4004 /* A helper function for check_types_worklist that checks two types for
4005 "deep" equality. Returns true if the types are considered the
4006 same, false otherwise. */
4009 check_types_equal (struct type
*type1
, struct type
*type2
,
4010 std::vector
<type_equality_entry
> *worklist
)
4012 type1
= check_typedef (type1
);
4013 type2
= check_typedef (type2
);
4018 if (type1
->code () != type2
->code ()
4019 || TYPE_LENGTH (type1
) != TYPE_LENGTH (type2
)
4020 || TYPE_UNSIGNED (type1
) != TYPE_UNSIGNED (type2
)
4021 || TYPE_NOSIGN (type1
) != TYPE_NOSIGN (type2
)
4022 || TYPE_ENDIANITY_NOT_DEFAULT (type1
) != TYPE_ENDIANITY_NOT_DEFAULT (type2
)
4023 || TYPE_VARARGS (type1
) != TYPE_VARARGS (type2
)
4024 || TYPE_VECTOR (type1
) != TYPE_VECTOR (type2
)
4025 || TYPE_NOTTEXT (type1
) != TYPE_NOTTEXT (type2
)
4026 || TYPE_INSTANCE_FLAGS (type1
) != TYPE_INSTANCE_FLAGS (type2
)
4027 || type1
->num_fields () != type2
->num_fields ())
4030 if (!compare_maybe_null_strings (type1
->name (), type2
->name ()))
4032 if (!compare_maybe_null_strings (type1
->name (), type2
->name ()))
4035 if (type1
->code () == TYPE_CODE_RANGE
)
4037 if (*TYPE_RANGE_DATA (type1
) != *TYPE_RANGE_DATA (type2
))
4044 for (i
= 0; i
< type1
->num_fields (); ++i
)
4046 const struct field
*field1
= &type1
->field (i
);
4047 const struct field
*field2
= &type2
->field (i
);
4049 if (FIELD_ARTIFICIAL (*field1
) != FIELD_ARTIFICIAL (*field2
)
4050 || FIELD_BITSIZE (*field1
) != FIELD_BITSIZE (*field2
)
4051 || FIELD_LOC_KIND (*field1
) != FIELD_LOC_KIND (*field2
))
4053 if (!compare_maybe_null_strings (FIELD_NAME (*field1
),
4054 FIELD_NAME (*field2
)))
4056 switch (FIELD_LOC_KIND (*field1
))
4058 case FIELD_LOC_KIND_BITPOS
:
4059 if (FIELD_BITPOS (*field1
) != FIELD_BITPOS (*field2
))
4062 case FIELD_LOC_KIND_ENUMVAL
:
4063 if (FIELD_ENUMVAL (*field1
) != FIELD_ENUMVAL (*field2
))
4066 case FIELD_LOC_KIND_PHYSADDR
:
4067 if (FIELD_STATIC_PHYSADDR (*field1
)
4068 != FIELD_STATIC_PHYSADDR (*field2
))
4071 case FIELD_LOC_KIND_PHYSNAME
:
4072 if (!compare_maybe_null_strings (FIELD_STATIC_PHYSNAME (*field1
),
4073 FIELD_STATIC_PHYSNAME (*field2
)))
4076 case FIELD_LOC_KIND_DWARF_BLOCK
:
4078 struct dwarf2_locexpr_baton
*block1
, *block2
;
4080 block1
= FIELD_DWARF_BLOCK (*field1
);
4081 block2
= FIELD_DWARF_BLOCK (*field2
);
4082 if (block1
->per_cu
!= block2
->per_cu
4083 || block1
->size
!= block2
->size
4084 || memcmp (block1
->data
, block2
->data
, block1
->size
) != 0)
4089 internal_error (__FILE__
, __LINE__
, _("Unsupported field kind "
4090 "%d by check_types_equal"),
4091 FIELD_LOC_KIND (*field1
));
4094 worklist
->emplace_back (field1
->type (), field2
->type ());
4098 if (TYPE_TARGET_TYPE (type1
) != NULL
)
4100 if (TYPE_TARGET_TYPE (type2
) == NULL
)
4103 worklist
->emplace_back (TYPE_TARGET_TYPE (type1
),
4104 TYPE_TARGET_TYPE (type2
));
4106 else if (TYPE_TARGET_TYPE (type2
) != NULL
)
4112 /* Check types on a worklist for equality. Returns false if any pair
4113 is not equal, true if they are all considered equal. */
4116 check_types_worklist (std::vector
<type_equality_entry
> *worklist
,
4119 while (!worklist
->empty ())
4123 struct type_equality_entry entry
= std::move (worklist
->back ());
4124 worklist
->pop_back ();
4126 /* If the type pair has already been visited, we know it is
4128 cache
->insert (&entry
, sizeof (entry
), &added
);
4132 if (!check_types_equal (entry
.type1
, entry
.type2
, worklist
))
4139 /* Return true if types TYPE1 and TYPE2 are equal, as determined by a
4140 "deep comparison". Otherwise return false. */
4143 types_deeply_equal (struct type
*type1
, struct type
*type2
)
4145 std::vector
<type_equality_entry
> worklist
;
4147 gdb_assert (type1
!= NULL
&& type2
!= NULL
);
4149 /* Early exit for the simple case. */
4153 gdb::bcache
cache (nullptr, nullptr);
4154 worklist
.emplace_back (type1
, type2
);
4155 return check_types_worklist (&worklist
, &cache
);
4158 /* Allocated status of type TYPE. Return zero if type TYPE is allocated.
4159 Otherwise return one. */
4162 type_not_allocated (const struct type
*type
)
4164 struct dynamic_prop
*prop
= TYPE_ALLOCATED_PROP (type
);
4166 return (prop
&& TYPE_DYN_PROP_KIND (prop
) == PROP_CONST
4167 && !TYPE_DYN_PROP_ADDR (prop
));
4170 /* Associated status of type TYPE. Return zero if type TYPE is associated.
4171 Otherwise return one. */
4174 type_not_associated (const struct type
*type
)
4176 struct dynamic_prop
*prop
= TYPE_ASSOCIATED_PROP (type
);
4178 return (prop
&& TYPE_DYN_PROP_KIND (prop
) == PROP_CONST
4179 && !TYPE_DYN_PROP_ADDR (prop
));
4182 /* rank_one_type helper for when PARM's type code is TYPE_CODE_PTR. */
4185 rank_one_type_parm_ptr (struct type
*parm
, struct type
*arg
, struct value
*value
)
4187 struct rank rank
= {0,0};
4189 switch (arg
->code ())
4193 /* Allowed pointer conversions are:
4194 (a) pointer to void-pointer conversion. */
4195 if (TYPE_TARGET_TYPE (parm
)->code () == TYPE_CODE_VOID
)
4196 return VOID_PTR_CONVERSION_BADNESS
;
4198 /* (b) pointer to ancestor-pointer conversion. */
4199 rank
.subrank
= distance_to_ancestor (TYPE_TARGET_TYPE (parm
),
4200 TYPE_TARGET_TYPE (arg
),
4202 if (rank
.subrank
>= 0)
4203 return sum_ranks (BASE_PTR_CONVERSION_BADNESS
, rank
);
4205 return INCOMPATIBLE_TYPE_BADNESS
;
4206 case TYPE_CODE_ARRAY
:
4208 struct type
*t1
= TYPE_TARGET_TYPE (parm
);
4209 struct type
*t2
= TYPE_TARGET_TYPE (arg
);
4211 if (types_equal (t1
, t2
))
4213 /* Make sure they are CV equal. */
4214 if (TYPE_CONST (t1
) != TYPE_CONST (t2
))
4215 rank
.subrank
|= CV_CONVERSION_CONST
;
4216 if (TYPE_VOLATILE (t1
) != TYPE_VOLATILE (t2
))
4217 rank
.subrank
|= CV_CONVERSION_VOLATILE
;
4218 if (rank
.subrank
!= 0)
4219 return sum_ranks (CV_CONVERSION_BADNESS
, rank
);
4220 return EXACT_MATCH_BADNESS
;
4222 return INCOMPATIBLE_TYPE_BADNESS
;
4224 case TYPE_CODE_FUNC
:
4225 return rank_one_type (TYPE_TARGET_TYPE (parm
), arg
, NULL
);
4227 if (value
!= NULL
&& value_type (value
)->code () == TYPE_CODE_INT
)
4229 if (value_as_long (value
) == 0)
4231 /* Null pointer conversion: allow it to be cast to a pointer.
4232 [4.10.1 of C++ standard draft n3290] */
4233 return NULL_POINTER_CONVERSION_BADNESS
;
4237 /* If type checking is disabled, allow the conversion. */
4238 if (!strict_type_checking
)
4239 return NS_INTEGER_POINTER_CONVERSION_BADNESS
;
4243 case TYPE_CODE_ENUM
:
4244 case TYPE_CODE_FLAGS
:
4245 case TYPE_CODE_CHAR
:
4246 case TYPE_CODE_RANGE
:
4247 case TYPE_CODE_BOOL
:
4249 return INCOMPATIBLE_TYPE_BADNESS
;
4253 /* rank_one_type helper for when PARM's type code is TYPE_CODE_ARRAY. */
4256 rank_one_type_parm_array (struct type
*parm
, struct type
*arg
, struct value
*value
)
4258 switch (arg
->code ())
4261 case TYPE_CODE_ARRAY
:
4262 return rank_one_type (TYPE_TARGET_TYPE (parm
),
4263 TYPE_TARGET_TYPE (arg
), NULL
);
4265 return INCOMPATIBLE_TYPE_BADNESS
;
4269 /* rank_one_type helper for when PARM's type code is TYPE_CODE_FUNC. */
4272 rank_one_type_parm_func (struct type
*parm
, struct type
*arg
, struct value
*value
)
4274 switch (arg
->code ())
4276 case TYPE_CODE_PTR
: /* funcptr -> func */
4277 return rank_one_type (parm
, TYPE_TARGET_TYPE (arg
), NULL
);
4279 return INCOMPATIBLE_TYPE_BADNESS
;
4283 /* rank_one_type helper for when PARM's type code is TYPE_CODE_INT. */
4286 rank_one_type_parm_int (struct type
*parm
, struct type
*arg
, struct value
*value
)
4288 switch (arg
->code ())
4291 if (TYPE_LENGTH (arg
) == TYPE_LENGTH (parm
))
4293 /* Deal with signed, unsigned, and plain chars and
4294 signed and unsigned ints. */
4295 if (TYPE_NOSIGN (parm
))
4297 /* This case only for character types. */
4298 if (TYPE_NOSIGN (arg
))
4299 return EXACT_MATCH_BADNESS
; /* plain char -> plain char */
4300 else /* signed/unsigned char -> plain char */
4301 return INTEGER_CONVERSION_BADNESS
;
4303 else if (TYPE_UNSIGNED (parm
))
4305 if (TYPE_UNSIGNED (arg
))
4307 /* unsigned int -> unsigned int, or
4308 unsigned long -> unsigned long */
4309 if (integer_types_same_name_p (parm
->name (),
4311 return EXACT_MATCH_BADNESS
;
4312 else if (integer_types_same_name_p (arg
->name (),
4314 && integer_types_same_name_p (parm
->name (),
4316 /* unsigned int -> unsigned long */
4317 return INTEGER_PROMOTION_BADNESS
;
4319 /* unsigned long -> unsigned int */
4320 return INTEGER_CONVERSION_BADNESS
;
4324 if (integer_types_same_name_p (arg
->name (),
4326 && integer_types_same_name_p (parm
->name (),
4328 /* signed long -> unsigned int */
4329 return INTEGER_CONVERSION_BADNESS
;
4331 /* signed int/long -> unsigned int/long */
4332 return INTEGER_CONVERSION_BADNESS
;
4335 else if (!TYPE_NOSIGN (arg
) && !TYPE_UNSIGNED (arg
))
4337 if (integer_types_same_name_p (parm
->name (),
4339 return EXACT_MATCH_BADNESS
;
4340 else if (integer_types_same_name_p (arg
->name (),
4342 && integer_types_same_name_p (parm
->name (),
4344 return INTEGER_PROMOTION_BADNESS
;
4346 return INTEGER_CONVERSION_BADNESS
;
4349 return INTEGER_CONVERSION_BADNESS
;
4351 else if (TYPE_LENGTH (arg
) < TYPE_LENGTH (parm
))
4352 return INTEGER_PROMOTION_BADNESS
;
4354 return INTEGER_CONVERSION_BADNESS
;
4355 case TYPE_CODE_ENUM
:
4356 case TYPE_CODE_FLAGS
:
4357 case TYPE_CODE_CHAR
:
4358 case TYPE_CODE_RANGE
:
4359 case TYPE_CODE_BOOL
:
4360 if (TYPE_DECLARED_CLASS (arg
))
4361 return INCOMPATIBLE_TYPE_BADNESS
;
4362 return INTEGER_PROMOTION_BADNESS
;
4364 return INT_FLOAT_CONVERSION_BADNESS
;
4366 return NS_POINTER_CONVERSION_BADNESS
;
4368 return INCOMPATIBLE_TYPE_BADNESS
;
4372 /* rank_one_type helper for when PARM's type code is TYPE_CODE_ENUM. */
4375 rank_one_type_parm_enum (struct type
*parm
, struct type
*arg
, struct value
*value
)
4377 switch (arg
->code ())
4380 case TYPE_CODE_CHAR
:
4381 case TYPE_CODE_RANGE
:
4382 case TYPE_CODE_BOOL
:
4383 case TYPE_CODE_ENUM
:
4384 if (TYPE_DECLARED_CLASS (parm
) || TYPE_DECLARED_CLASS (arg
))
4385 return INCOMPATIBLE_TYPE_BADNESS
;
4386 return INTEGER_CONVERSION_BADNESS
;
4388 return INT_FLOAT_CONVERSION_BADNESS
;
4390 return INCOMPATIBLE_TYPE_BADNESS
;
4394 /* rank_one_type helper for when PARM's type code is TYPE_CODE_CHAR. */
4397 rank_one_type_parm_char (struct type
*parm
, struct type
*arg
, struct value
*value
)
4399 switch (arg
->code ())
4401 case TYPE_CODE_RANGE
:
4402 case TYPE_CODE_BOOL
:
4403 case TYPE_CODE_ENUM
:
4404 if (TYPE_DECLARED_CLASS (arg
))
4405 return INCOMPATIBLE_TYPE_BADNESS
;
4406 return INTEGER_CONVERSION_BADNESS
;
4408 return INT_FLOAT_CONVERSION_BADNESS
;
4410 if (TYPE_LENGTH (arg
) > TYPE_LENGTH (parm
))
4411 return INTEGER_CONVERSION_BADNESS
;
4412 else if (TYPE_LENGTH (arg
) < TYPE_LENGTH (parm
))
4413 return INTEGER_PROMOTION_BADNESS
;
4415 case TYPE_CODE_CHAR
:
4416 /* Deal with signed, unsigned, and plain chars for C++ and
4417 with int cases falling through from previous case. */
4418 if (TYPE_NOSIGN (parm
))
4420 if (TYPE_NOSIGN (arg
))
4421 return EXACT_MATCH_BADNESS
;
4423 return INTEGER_CONVERSION_BADNESS
;
4425 else if (TYPE_UNSIGNED (parm
))
4427 if (TYPE_UNSIGNED (arg
))
4428 return EXACT_MATCH_BADNESS
;
4430 return INTEGER_PROMOTION_BADNESS
;
4432 else if (!TYPE_NOSIGN (arg
) && !TYPE_UNSIGNED (arg
))
4433 return EXACT_MATCH_BADNESS
;
4435 return INTEGER_CONVERSION_BADNESS
;
4437 return INCOMPATIBLE_TYPE_BADNESS
;
4441 /* rank_one_type helper for when PARM's type code is TYPE_CODE_RANGE. */
4444 rank_one_type_parm_range (struct type
*parm
, struct type
*arg
, struct value
*value
)
4446 switch (arg
->code ())
4449 case TYPE_CODE_CHAR
:
4450 case TYPE_CODE_RANGE
:
4451 case TYPE_CODE_BOOL
:
4452 case TYPE_CODE_ENUM
:
4453 return INTEGER_CONVERSION_BADNESS
;
4455 return INT_FLOAT_CONVERSION_BADNESS
;
4457 return INCOMPATIBLE_TYPE_BADNESS
;
4461 /* rank_one_type helper for when PARM's type code is TYPE_CODE_BOOL. */
4464 rank_one_type_parm_bool (struct type
*parm
, struct type
*arg
, struct value
*value
)
4466 switch (arg
->code ())
4468 /* n3290 draft, section 4.12.1 (conv.bool):
4470 "A prvalue of arithmetic, unscoped enumeration, pointer, or
4471 pointer to member type can be converted to a prvalue of type
4472 bool. A zero value, null pointer value, or null member pointer
4473 value is converted to false; any other value is converted to
4474 true. A prvalue of type std::nullptr_t can be converted to a
4475 prvalue of type bool; the resulting value is false." */
4477 case TYPE_CODE_CHAR
:
4478 case TYPE_CODE_ENUM
:
4480 case TYPE_CODE_MEMBERPTR
:
4482 return BOOL_CONVERSION_BADNESS
;
4483 case TYPE_CODE_RANGE
:
4484 return INCOMPATIBLE_TYPE_BADNESS
;
4485 case TYPE_CODE_BOOL
:
4486 return EXACT_MATCH_BADNESS
;
4488 return INCOMPATIBLE_TYPE_BADNESS
;
4492 /* rank_one_type helper for when PARM's type code is TYPE_CODE_FLOAT. */
4495 rank_one_type_parm_float (struct type
*parm
, struct type
*arg
, struct value
*value
)
4497 switch (arg
->code ())
4500 if (TYPE_LENGTH (arg
) < TYPE_LENGTH (parm
))
4501 return FLOAT_PROMOTION_BADNESS
;
4502 else if (TYPE_LENGTH (arg
) == TYPE_LENGTH (parm
))
4503 return EXACT_MATCH_BADNESS
;
4505 return FLOAT_CONVERSION_BADNESS
;
4507 case TYPE_CODE_BOOL
:
4508 case TYPE_CODE_ENUM
:
4509 case TYPE_CODE_RANGE
:
4510 case TYPE_CODE_CHAR
:
4511 return INT_FLOAT_CONVERSION_BADNESS
;
4513 return INCOMPATIBLE_TYPE_BADNESS
;
4517 /* rank_one_type helper for when PARM's type code is TYPE_CODE_COMPLEX. */
4520 rank_one_type_parm_complex (struct type
*parm
, struct type
*arg
, struct value
*value
)
4522 switch (arg
->code ())
4523 { /* Strictly not needed for C++, but... */
4525 return FLOAT_PROMOTION_BADNESS
;
4526 case TYPE_CODE_COMPLEX
:
4527 return EXACT_MATCH_BADNESS
;
4529 return INCOMPATIBLE_TYPE_BADNESS
;
4533 /* rank_one_type helper for when PARM's type code is TYPE_CODE_STRUCT. */
4536 rank_one_type_parm_struct (struct type
*parm
, struct type
*arg
, struct value
*value
)
4538 struct rank rank
= {0, 0};
4540 switch (arg
->code ())
4542 case TYPE_CODE_STRUCT
:
4543 /* Check for derivation */
4544 rank
.subrank
= distance_to_ancestor (parm
, arg
, 0);
4545 if (rank
.subrank
>= 0)
4546 return sum_ranks (BASE_CONVERSION_BADNESS
, rank
);
4549 return INCOMPATIBLE_TYPE_BADNESS
;
4553 /* rank_one_type helper for when PARM's type code is TYPE_CODE_SET. */
4556 rank_one_type_parm_set (struct type
*parm
, struct type
*arg
, struct value
*value
)
4558 switch (arg
->code ())
4562 return rank_one_type (parm
->field (0).type (),
4563 arg
->field (0).type (), NULL
);
4565 return INCOMPATIBLE_TYPE_BADNESS
;
4569 /* Compare one type (PARM) for compatibility with another (ARG).
4570 * PARM is intended to be the parameter type of a function; and
4571 * ARG is the supplied argument's type. This function tests if
4572 * the latter can be converted to the former.
4573 * VALUE is the argument's value or NULL if none (or called recursively)
4575 * Return 0 if they are identical types;
4576 * Otherwise, return an integer which corresponds to how compatible
4577 * PARM is to ARG. The higher the return value, the worse the match.
4578 * Generally the "bad" conversions are all uniformly assigned a 100. */
4581 rank_one_type (struct type
*parm
, struct type
*arg
, struct value
*value
)
4583 struct rank rank
= {0,0};
4585 /* Resolve typedefs */
4586 if (parm
->code () == TYPE_CODE_TYPEDEF
)
4587 parm
= check_typedef (parm
);
4588 if (arg
->code () == TYPE_CODE_TYPEDEF
)
4589 arg
= check_typedef (arg
);
4591 if (TYPE_IS_REFERENCE (parm
) && value
!= NULL
)
4593 if (VALUE_LVAL (value
) == not_lval
)
4595 /* Rvalues should preferably bind to rvalue references or const
4596 lvalue references. */
4597 if (parm
->code () == TYPE_CODE_RVALUE_REF
)
4598 rank
.subrank
= REFERENCE_CONVERSION_RVALUE
;
4599 else if (TYPE_CONST (TYPE_TARGET_TYPE (parm
)))
4600 rank
.subrank
= REFERENCE_CONVERSION_CONST_LVALUE
;
4602 return INCOMPATIBLE_TYPE_BADNESS
;
4603 return sum_ranks (rank
, REFERENCE_CONVERSION_BADNESS
);
4607 /* It's illegal to pass an lvalue as an rvalue. */
4608 if (parm
->code () == TYPE_CODE_RVALUE_REF
)
4609 return INCOMPATIBLE_TYPE_BADNESS
;
4613 if (types_equal (parm
, arg
))
4615 struct type
*t1
= parm
;
4616 struct type
*t2
= arg
;
4618 /* For pointers and references, compare target type. */
4619 if (parm
->code () == TYPE_CODE_PTR
|| TYPE_IS_REFERENCE (parm
))
4621 t1
= TYPE_TARGET_TYPE (parm
);
4622 t2
= TYPE_TARGET_TYPE (arg
);
4625 /* Make sure they are CV equal, too. */
4626 if (TYPE_CONST (t1
) != TYPE_CONST (t2
))
4627 rank
.subrank
|= CV_CONVERSION_CONST
;
4628 if (TYPE_VOLATILE (t1
) != TYPE_VOLATILE (t2
))
4629 rank
.subrank
|= CV_CONVERSION_VOLATILE
;
4630 if (rank
.subrank
!= 0)
4631 return sum_ranks (CV_CONVERSION_BADNESS
, rank
);
4632 return EXACT_MATCH_BADNESS
;
4635 /* See through references, since we can almost make non-references
4638 if (TYPE_IS_REFERENCE (arg
))
4639 return (sum_ranks (rank_one_type (parm
, TYPE_TARGET_TYPE (arg
), NULL
),
4640 REFERENCE_SEE_THROUGH_BADNESS
));
4641 if (TYPE_IS_REFERENCE (parm
))
4642 return (sum_ranks (rank_one_type (TYPE_TARGET_TYPE (parm
), arg
, NULL
),
4643 REFERENCE_SEE_THROUGH_BADNESS
));
4645 /* Debugging only. */
4646 fprintf_filtered (gdb_stderr
,
4647 "------ Arg is %s [%d], parm is %s [%d]\n",
4648 arg
->name (), arg
->code (),
4649 parm
->name (), parm
->code ());
4651 /* x -> y means arg of type x being supplied for parameter of type y. */
4653 switch (parm
->code ())
4656 return rank_one_type_parm_ptr (parm
, arg
, value
);
4657 case TYPE_CODE_ARRAY
:
4658 return rank_one_type_parm_array (parm
, arg
, value
);
4659 case TYPE_CODE_FUNC
:
4660 return rank_one_type_parm_func (parm
, arg
, value
);
4662 return rank_one_type_parm_int (parm
, arg
, value
);
4663 case TYPE_CODE_ENUM
:
4664 return rank_one_type_parm_enum (parm
, arg
, value
);
4665 case TYPE_CODE_CHAR
:
4666 return rank_one_type_parm_char (parm
, arg
, value
);
4667 case TYPE_CODE_RANGE
:
4668 return rank_one_type_parm_range (parm
, arg
, value
);
4669 case TYPE_CODE_BOOL
:
4670 return rank_one_type_parm_bool (parm
, arg
, value
);
4672 return rank_one_type_parm_float (parm
, arg
, value
);
4673 case TYPE_CODE_COMPLEX
:
4674 return rank_one_type_parm_complex (parm
, arg
, value
);
4675 case TYPE_CODE_STRUCT
:
4676 return rank_one_type_parm_struct (parm
, arg
, value
);
4678 return rank_one_type_parm_set (parm
, arg
, value
);
4680 return INCOMPATIBLE_TYPE_BADNESS
;
4681 } /* switch (arg->code ()) */
4684 /* End of functions for overload resolution. */
4686 /* Routines to pretty-print types. */
4689 print_bit_vector (B_TYPE
*bits
, int nbits
)
4693 for (bitno
= 0; bitno
< nbits
; bitno
++)
4695 if ((bitno
% 8) == 0)
4697 puts_filtered (" ");
4699 if (B_TST (bits
, bitno
))
4700 printf_filtered (("1"));
4702 printf_filtered (("0"));
4706 /* Note the first arg should be the "this" pointer, we may not want to
4707 include it since we may get into a infinitely recursive
4711 print_args (struct field
*args
, int nargs
, int spaces
)
4717 for (i
= 0; i
< nargs
; i
++)
4719 printfi_filtered (spaces
, "[%d] name '%s'\n", i
,
4720 args
[i
].name
!= NULL
? args
[i
].name
: "<NULL>");
4721 recursive_dump_type (args
[i
].type (), spaces
+ 2);
4727 field_is_static (struct field
*f
)
4729 /* "static" fields are the fields whose location is not relative
4730 to the address of the enclosing struct. It would be nice to
4731 have a dedicated flag that would be set for static fields when
4732 the type is being created. But in practice, checking the field
4733 loc_kind should give us an accurate answer. */
4734 return (FIELD_LOC_KIND (*f
) == FIELD_LOC_KIND_PHYSNAME
4735 || FIELD_LOC_KIND (*f
) == FIELD_LOC_KIND_PHYSADDR
);
4739 dump_fn_fieldlists (struct type
*type
, int spaces
)
4745 printfi_filtered (spaces
, "fn_fieldlists ");
4746 gdb_print_host_address (TYPE_FN_FIELDLISTS (type
), gdb_stdout
);
4747 printf_filtered ("\n");
4748 for (method_idx
= 0; method_idx
< TYPE_NFN_FIELDS (type
); method_idx
++)
4750 f
= TYPE_FN_FIELDLIST1 (type
, method_idx
);
4751 printfi_filtered (spaces
+ 2, "[%d] name '%s' (",
4753 TYPE_FN_FIELDLIST_NAME (type
, method_idx
));
4754 gdb_print_host_address (TYPE_FN_FIELDLIST_NAME (type
, method_idx
),
4756 printf_filtered (_(") length %d\n"),
4757 TYPE_FN_FIELDLIST_LENGTH (type
, method_idx
));
4758 for (overload_idx
= 0;
4759 overload_idx
< TYPE_FN_FIELDLIST_LENGTH (type
, method_idx
);
4762 printfi_filtered (spaces
+ 4, "[%d] physname '%s' (",
4764 TYPE_FN_FIELD_PHYSNAME (f
, overload_idx
));
4765 gdb_print_host_address (TYPE_FN_FIELD_PHYSNAME (f
, overload_idx
),
4767 printf_filtered (")\n");
4768 printfi_filtered (spaces
+ 8, "type ");
4769 gdb_print_host_address (TYPE_FN_FIELD_TYPE (f
, overload_idx
),
4771 printf_filtered ("\n");
4773 recursive_dump_type (TYPE_FN_FIELD_TYPE (f
, overload_idx
),
4776 printfi_filtered (spaces
+ 8, "args ");
4777 gdb_print_host_address (TYPE_FN_FIELD_ARGS (f
, overload_idx
),
4779 printf_filtered ("\n");
4780 print_args (TYPE_FN_FIELD_ARGS (f
, overload_idx
),
4781 TYPE_FN_FIELD_TYPE (f
, overload_idx
)->num_fields (),
4783 printfi_filtered (spaces
+ 8, "fcontext ");
4784 gdb_print_host_address (TYPE_FN_FIELD_FCONTEXT (f
, overload_idx
),
4786 printf_filtered ("\n");
4788 printfi_filtered (spaces
+ 8, "is_const %d\n",
4789 TYPE_FN_FIELD_CONST (f
, overload_idx
));
4790 printfi_filtered (spaces
+ 8, "is_volatile %d\n",
4791 TYPE_FN_FIELD_VOLATILE (f
, overload_idx
));
4792 printfi_filtered (spaces
+ 8, "is_private %d\n",
4793 TYPE_FN_FIELD_PRIVATE (f
, overload_idx
));
4794 printfi_filtered (spaces
+ 8, "is_protected %d\n",
4795 TYPE_FN_FIELD_PROTECTED (f
, overload_idx
));
4796 printfi_filtered (spaces
+ 8, "is_stub %d\n",
4797 TYPE_FN_FIELD_STUB (f
, overload_idx
));
4798 printfi_filtered (spaces
+ 8, "defaulted %d\n",
4799 TYPE_FN_FIELD_DEFAULTED (f
, overload_idx
));
4800 printfi_filtered (spaces
+ 8, "is_deleted %d\n",
4801 TYPE_FN_FIELD_DELETED (f
, overload_idx
));
4802 printfi_filtered (spaces
+ 8, "voffset %u\n",
4803 TYPE_FN_FIELD_VOFFSET (f
, overload_idx
));
4809 print_cplus_stuff (struct type
*type
, int spaces
)
4811 printfi_filtered (spaces
, "vptr_fieldno %d\n", TYPE_VPTR_FIELDNO (type
));
4812 printfi_filtered (spaces
, "vptr_basetype ");
4813 gdb_print_host_address (TYPE_VPTR_BASETYPE (type
), gdb_stdout
);
4814 puts_filtered ("\n");
4815 if (TYPE_VPTR_BASETYPE (type
) != NULL
)
4816 recursive_dump_type (TYPE_VPTR_BASETYPE (type
), spaces
+ 2);
4818 printfi_filtered (spaces
, "n_baseclasses %d\n",
4819 TYPE_N_BASECLASSES (type
));
4820 printfi_filtered (spaces
, "nfn_fields %d\n",
4821 TYPE_NFN_FIELDS (type
));
4822 if (TYPE_N_BASECLASSES (type
) > 0)
4824 printfi_filtered (spaces
, "virtual_field_bits (%d bits at *",
4825 TYPE_N_BASECLASSES (type
));
4826 gdb_print_host_address (TYPE_FIELD_VIRTUAL_BITS (type
),
4828 printf_filtered (")");
4830 print_bit_vector (TYPE_FIELD_VIRTUAL_BITS (type
),
4831 TYPE_N_BASECLASSES (type
));
4832 puts_filtered ("\n");
4834 if (type
->num_fields () > 0)
4836 if (TYPE_FIELD_PRIVATE_BITS (type
) != NULL
)
4838 printfi_filtered (spaces
,
4839 "private_field_bits (%d bits at *",
4840 type
->num_fields ());
4841 gdb_print_host_address (TYPE_FIELD_PRIVATE_BITS (type
),
4843 printf_filtered (")");
4844 print_bit_vector (TYPE_FIELD_PRIVATE_BITS (type
),
4845 type
->num_fields ());
4846 puts_filtered ("\n");
4848 if (TYPE_FIELD_PROTECTED_BITS (type
) != NULL
)
4850 printfi_filtered (spaces
,
4851 "protected_field_bits (%d bits at *",
4852 type
->num_fields ());
4853 gdb_print_host_address (TYPE_FIELD_PROTECTED_BITS (type
),
4855 printf_filtered (")");
4856 print_bit_vector (TYPE_FIELD_PROTECTED_BITS (type
),
4857 type
->num_fields ());
4858 puts_filtered ("\n");
4861 if (TYPE_NFN_FIELDS (type
) > 0)
4863 dump_fn_fieldlists (type
, spaces
);
4866 printfi_filtered (spaces
, "calling_convention %d\n",
4867 TYPE_CPLUS_CALLING_CONVENTION (type
));
4870 /* Print the contents of the TYPE's type_specific union, assuming that
4871 its type-specific kind is TYPE_SPECIFIC_GNAT_STUFF. */
4874 print_gnat_stuff (struct type
*type
, int spaces
)
4876 struct type
*descriptive_type
= TYPE_DESCRIPTIVE_TYPE (type
);
4878 if (descriptive_type
== NULL
)
4879 printfi_filtered (spaces
+ 2, "no descriptive type\n");
4882 printfi_filtered (spaces
+ 2, "descriptive type\n");
4883 recursive_dump_type (descriptive_type
, spaces
+ 4);
4887 static struct obstack dont_print_type_obstack
;
4890 recursive_dump_type (struct type
*type
, int spaces
)
4895 obstack_begin (&dont_print_type_obstack
, 0);
4897 if (type
->num_fields () > 0
4898 || (HAVE_CPLUS_STRUCT (type
) && TYPE_NFN_FIELDS (type
) > 0))
4900 struct type
**first_dont_print
4901 = (struct type
**) obstack_base (&dont_print_type_obstack
);
4903 int i
= (struct type
**)
4904 obstack_next_free (&dont_print_type_obstack
) - first_dont_print
;
4908 if (type
== first_dont_print
[i
])
4910 printfi_filtered (spaces
, "type node ");
4911 gdb_print_host_address (type
, gdb_stdout
);
4912 printf_filtered (_(" <same as already seen type>\n"));
4917 obstack_ptr_grow (&dont_print_type_obstack
, type
);
4920 printfi_filtered (spaces
, "type node ");
4921 gdb_print_host_address (type
, gdb_stdout
);
4922 printf_filtered ("\n");
4923 printfi_filtered (spaces
, "name '%s' (",
4924 type
->name () ? type
->name () : "<NULL>");
4925 gdb_print_host_address (type
->name (), gdb_stdout
);
4926 printf_filtered (")\n");
4927 printfi_filtered (spaces
, "code 0x%x ", type
->code ());
4928 switch (type
->code ())
4930 case TYPE_CODE_UNDEF
:
4931 printf_filtered ("(TYPE_CODE_UNDEF)");
4934 printf_filtered ("(TYPE_CODE_PTR)");
4936 case TYPE_CODE_ARRAY
:
4937 printf_filtered ("(TYPE_CODE_ARRAY)");
4939 case TYPE_CODE_STRUCT
:
4940 printf_filtered ("(TYPE_CODE_STRUCT)");
4942 case TYPE_CODE_UNION
:
4943 printf_filtered ("(TYPE_CODE_UNION)");
4945 case TYPE_CODE_ENUM
:
4946 printf_filtered ("(TYPE_CODE_ENUM)");
4948 case TYPE_CODE_FLAGS
:
4949 printf_filtered ("(TYPE_CODE_FLAGS)");
4951 case TYPE_CODE_FUNC
:
4952 printf_filtered ("(TYPE_CODE_FUNC)");
4955 printf_filtered ("(TYPE_CODE_INT)");
4958 printf_filtered ("(TYPE_CODE_FLT)");
4960 case TYPE_CODE_VOID
:
4961 printf_filtered ("(TYPE_CODE_VOID)");
4964 printf_filtered ("(TYPE_CODE_SET)");
4966 case TYPE_CODE_RANGE
:
4967 printf_filtered ("(TYPE_CODE_RANGE)");
4969 case TYPE_CODE_STRING
:
4970 printf_filtered ("(TYPE_CODE_STRING)");
4972 case TYPE_CODE_ERROR
:
4973 printf_filtered ("(TYPE_CODE_ERROR)");
4975 case TYPE_CODE_MEMBERPTR
:
4976 printf_filtered ("(TYPE_CODE_MEMBERPTR)");
4978 case TYPE_CODE_METHODPTR
:
4979 printf_filtered ("(TYPE_CODE_METHODPTR)");
4981 case TYPE_CODE_METHOD
:
4982 printf_filtered ("(TYPE_CODE_METHOD)");
4985 printf_filtered ("(TYPE_CODE_REF)");
4987 case TYPE_CODE_CHAR
:
4988 printf_filtered ("(TYPE_CODE_CHAR)");
4990 case TYPE_CODE_BOOL
:
4991 printf_filtered ("(TYPE_CODE_BOOL)");
4993 case TYPE_CODE_COMPLEX
:
4994 printf_filtered ("(TYPE_CODE_COMPLEX)");
4996 case TYPE_CODE_TYPEDEF
:
4997 printf_filtered ("(TYPE_CODE_TYPEDEF)");
4999 case TYPE_CODE_NAMESPACE
:
5000 printf_filtered ("(TYPE_CODE_NAMESPACE)");
5003 printf_filtered ("(UNKNOWN TYPE CODE)");
5006 puts_filtered ("\n");
5007 printfi_filtered (spaces
, "length %s\n", pulongest (TYPE_LENGTH (type
)));
5008 if (TYPE_OBJFILE_OWNED (type
))
5010 printfi_filtered (spaces
, "objfile ");
5011 gdb_print_host_address (TYPE_OWNER (type
).objfile
, gdb_stdout
);
5015 printfi_filtered (spaces
, "gdbarch ");
5016 gdb_print_host_address (TYPE_OWNER (type
).gdbarch
, gdb_stdout
);
5018 printf_filtered ("\n");
5019 printfi_filtered (spaces
, "target_type ");
5020 gdb_print_host_address (TYPE_TARGET_TYPE (type
), gdb_stdout
);
5021 printf_filtered ("\n");
5022 if (TYPE_TARGET_TYPE (type
) != NULL
)
5024 recursive_dump_type (TYPE_TARGET_TYPE (type
), spaces
+ 2);
5026 printfi_filtered (spaces
, "pointer_type ");
5027 gdb_print_host_address (TYPE_POINTER_TYPE (type
), gdb_stdout
);
5028 printf_filtered ("\n");
5029 printfi_filtered (spaces
, "reference_type ");
5030 gdb_print_host_address (TYPE_REFERENCE_TYPE (type
), gdb_stdout
);
5031 printf_filtered ("\n");
5032 printfi_filtered (spaces
, "type_chain ");
5033 gdb_print_host_address (TYPE_CHAIN (type
), gdb_stdout
);
5034 printf_filtered ("\n");
5035 printfi_filtered (spaces
, "instance_flags 0x%x",
5036 TYPE_INSTANCE_FLAGS (type
));
5037 if (TYPE_CONST (type
))
5039 puts_filtered (" TYPE_CONST");
5041 if (TYPE_VOLATILE (type
))
5043 puts_filtered (" TYPE_VOLATILE");
5045 if (TYPE_CODE_SPACE (type
))
5047 puts_filtered (" TYPE_CODE_SPACE");
5049 if (TYPE_DATA_SPACE (type
))
5051 puts_filtered (" TYPE_DATA_SPACE");
5053 if (TYPE_ADDRESS_CLASS_1 (type
))
5055 puts_filtered (" TYPE_ADDRESS_CLASS_1");
5057 if (TYPE_ADDRESS_CLASS_2 (type
))
5059 puts_filtered (" TYPE_ADDRESS_CLASS_2");
5061 if (TYPE_RESTRICT (type
))
5063 puts_filtered (" TYPE_RESTRICT");
5065 if (TYPE_ATOMIC (type
))
5067 puts_filtered (" TYPE_ATOMIC");
5069 puts_filtered ("\n");
5071 printfi_filtered (spaces
, "flags");
5072 if (TYPE_UNSIGNED (type
))
5074 puts_filtered (" TYPE_UNSIGNED");
5076 if (TYPE_NOSIGN (type
))
5078 puts_filtered (" TYPE_NOSIGN");
5080 if (TYPE_ENDIANITY_NOT_DEFAULT (type
))
5082 puts_filtered (" TYPE_ENDIANITY_NOT_DEFAULT");
5084 if (TYPE_STUB (type
))
5086 puts_filtered (" TYPE_STUB");
5088 if (TYPE_TARGET_STUB (type
))
5090 puts_filtered (" TYPE_TARGET_STUB");
5092 if (TYPE_PROTOTYPED (type
))
5094 puts_filtered (" TYPE_PROTOTYPED");
5096 if (TYPE_VARARGS (type
))
5098 puts_filtered (" TYPE_VARARGS");
5100 /* This is used for things like AltiVec registers on ppc. Gcc emits
5101 an attribute for the array type, which tells whether or not we
5102 have a vector, instead of a regular array. */
5103 if (TYPE_VECTOR (type
))
5105 puts_filtered (" TYPE_VECTOR");
5107 if (TYPE_FIXED_INSTANCE (type
))
5109 puts_filtered (" TYPE_FIXED_INSTANCE");
5111 if (TYPE_STUB_SUPPORTED (type
))
5113 puts_filtered (" TYPE_STUB_SUPPORTED");
5115 if (TYPE_NOTTEXT (type
))
5117 puts_filtered (" TYPE_NOTTEXT");
5119 puts_filtered ("\n");
5120 printfi_filtered (spaces
, "nfields %d ", type
->num_fields ());
5121 gdb_print_host_address (type
->fields (), gdb_stdout
);
5122 puts_filtered ("\n");
5123 for (idx
= 0; idx
< type
->num_fields (); idx
++)
5125 if (type
->code () == TYPE_CODE_ENUM
)
5126 printfi_filtered (spaces
+ 2,
5127 "[%d] enumval %s type ",
5128 idx
, plongest (TYPE_FIELD_ENUMVAL (type
, idx
)));
5130 printfi_filtered (spaces
+ 2,
5131 "[%d] bitpos %s bitsize %d type ",
5132 idx
, plongest (TYPE_FIELD_BITPOS (type
, idx
)),
5133 TYPE_FIELD_BITSIZE (type
, idx
));
5134 gdb_print_host_address (type
->field (idx
).type (), gdb_stdout
);
5135 printf_filtered (" name '%s' (",
5136 TYPE_FIELD_NAME (type
, idx
) != NULL
5137 ? TYPE_FIELD_NAME (type
, idx
)
5139 gdb_print_host_address (TYPE_FIELD_NAME (type
, idx
), gdb_stdout
);
5140 printf_filtered (")\n");
5141 if (type
->field (idx
).type () != NULL
)
5143 recursive_dump_type (type
->field (idx
).type (), spaces
+ 4);
5146 if (type
->code () == TYPE_CODE_RANGE
)
5148 printfi_filtered (spaces
, "low %s%s high %s%s\n",
5149 plongest (TYPE_LOW_BOUND (type
)),
5150 TYPE_LOW_BOUND_UNDEFINED (type
) ? " (undefined)" : "",
5151 plongest (TYPE_HIGH_BOUND (type
)),
5152 TYPE_HIGH_BOUND_UNDEFINED (type
)
5153 ? " (undefined)" : "");
5156 switch (TYPE_SPECIFIC_FIELD (type
))
5158 case TYPE_SPECIFIC_CPLUS_STUFF
:
5159 printfi_filtered (spaces
, "cplus_stuff ");
5160 gdb_print_host_address (TYPE_CPLUS_SPECIFIC (type
),
5162 puts_filtered ("\n");
5163 print_cplus_stuff (type
, spaces
);
5166 case TYPE_SPECIFIC_GNAT_STUFF
:
5167 printfi_filtered (spaces
, "gnat_stuff ");
5168 gdb_print_host_address (TYPE_GNAT_SPECIFIC (type
), gdb_stdout
);
5169 puts_filtered ("\n");
5170 print_gnat_stuff (type
, spaces
);
5173 case TYPE_SPECIFIC_FLOATFORMAT
:
5174 printfi_filtered (spaces
, "floatformat ");
5175 if (TYPE_FLOATFORMAT (type
) == NULL
5176 || TYPE_FLOATFORMAT (type
)->name
== NULL
)
5177 puts_filtered ("(null)");
5179 puts_filtered (TYPE_FLOATFORMAT (type
)->name
);
5180 puts_filtered ("\n");
5183 case TYPE_SPECIFIC_FUNC
:
5184 printfi_filtered (spaces
, "calling_convention %d\n",
5185 TYPE_CALLING_CONVENTION (type
));
5186 /* tail_call_list is not printed. */
5189 case TYPE_SPECIFIC_SELF_TYPE
:
5190 printfi_filtered (spaces
, "self_type ");
5191 gdb_print_host_address (TYPE_SELF_TYPE (type
), gdb_stdout
);
5192 puts_filtered ("\n");
5197 obstack_free (&dont_print_type_obstack
, NULL
);
5200 /* Trivial helpers for the libiberty hash table, for mapping one
5203 struct type_pair
: public allocate_on_obstack
5205 type_pair (struct type
*old_
, struct type
*newobj_
)
5206 : old (old_
), newobj (newobj_
)
5209 struct type
* const old
, * const newobj
;
5213 type_pair_hash (const void *item
)
5215 const struct type_pair
*pair
= (const struct type_pair
*) item
;
5217 return htab_hash_pointer (pair
->old
);
5221 type_pair_eq (const void *item_lhs
, const void *item_rhs
)
5223 const struct type_pair
*lhs
= (const struct type_pair
*) item_lhs
;
5224 const struct type_pair
*rhs
= (const struct type_pair
*) item_rhs
;
5226 return lhs
->old
== rhs
->old
;
5229 /* Allocate the hash table used by copy_type_recursive to walk
5230 types without duplicates. We use OBJFILE's obstack, because
5231 OBJFILE is about to be deleted. */
5234 create_copied_types_hash (struct objfile
*objfile
)
5236 return htab_create_alloc_ex (1, type_pair_hash
, type_pair_eq
,
5237 NULL
, &objfile
->objfile_obstack
,
5238 hashtab_obstack_allocate
,
5239 dummy_obstack_deallocate
);
5242 /* Recursively copy (deep copy) a dynamic attribute list of a type. */
5244 static struct dynamic_prop_list
*
5245 copy_dynamic_prop_list (struct obstack
*objfile_obstack
,
5246 struct dynamic_prop_list
*list
)
5248 struct dynamic_prop_list
*copy
= list
;
5249 struct dynamic_prop_list
**node_ptr
= ©
;
5251 while (*node_ptr
!= NULL
)
5253 struct dynamic_prop_list
*node_copy
;
5255 node_copy
= ((struct dynamic_prop_list
*)
5256 obstack_copy (objfile_obstack
, *node_ptr
,
5257 sizeof (struct dynamic_prop_list
)));
5258 node_copy
->prop
= (*node_ptr
)->prop
;
5259 *node_ptr
= node_copy
;
5261 node_ptr
= &node_copy
->next
;
5267 /* Recursively copy (deep copy) TYPE, if it is associated with
5268 OBJFILE. Return a new type owned by the gdbarch associated with the type, a
5269 saved type if we have already visited TYPE (using COPIED_TYPES), or TYPE if
5270 it is not associated with OBJFILE. */
5273 copy_type_recursive (struct objfile
*objfile
,
5275 htab_t copied_types
)
5278 struct type
*new_type
;
5280 if (! TYPE_OBJFILE_OWNED (type
))
5283 /* This type shouldn't be pointing to any types in other objfiles;
5284 if it did, the type might disappear unexpectedly. */
5285 gdb_assert (TYPE_OBJFILE (type
) == objfile
);
5287 struct type_pair
pair (type
, nullptr);
5289 slot
= htab_find_slot (copied_types
, &pair
, INSERT
);
5291 return ((struct type_pair
*) *slot
)->newobj
;
5293 new_type
= alloc_type_arch (get_type_arch (type
));
5295 /* We must add the new type to the hash table immediately, in case
5296 we encounter this type again during a recursive call below. */
5297 struct type_pair
*stored
5298 = new (&objfile
->objfile_obstack
) struct type_pair (type
, new_type
);
5302 /* Copy the common fields of types. For the main type, we simply
5303 copy the entire thing and then update specific fields as needed. */
5304 *TYPE_MAIN_TYPE (new_type
) = *TYPE_MAIN_TYPE (type
);
5305 TYPE_OBJFILE_OWNED (new_type
) = 0;
5306 TYPE_OWNER (new_type
).gdbarch
= get_type_arch (type
);
5309 new_type
->set_name (xstrdup (type
->name ()));
5311 TYPE_INSTANCE_FLAGS (new_type
) = TYPE_INSTANCE_FLAGS (type
);
5312 TYPE_LENGTH (new_type
) = TYPE_LENGTH (type
);
5314 /* Copy the fields. */
5315 if (type
->num_fields ())
5319 nfields
= type
->num_fields ();
5320 new_type
->set_fields
5322 TYPE_ZALLOC (new_type
, nfields
* sizeof (struct field
)));
5324 for (i
= 0; i
< nfields
; i
++)
5326 TYPE_FIELD_ARTIFICIAL (new_type
, i
) =
5327 TYPE_FIELD_ARTIFICIAL (type
, i
);
5328 TYPE_FIELD_BITSIZE (new_type
, i
) = TYPE_FIELD_BITSIZE (type
, i
);
5329 if (type
->field (i
).type ())
5330 new_type
->field (i
).set_type
5331 (copy_type_recursive (objfile
, type
->field (i
).type (),
5333 if (TYPE_FIELD_NAME (type
, i
))
5334 TYPE_FIELD_NAME (new_type
, i
) =
5335 xstrdup (TYPE_FIELD_NAME (type
, i
));
5336 switch (TYPE_FIELD_LOC_KIND (type
, i
))
5338 case FIELD_LOC_KIND_BITPOS
:
5339 SET_FIELD_BITPOS (new_type
->field (i
),
5340 TYPE_FIELD_BITPOS (type
, i
));
5342 case FIELD_LOC_KIND_ENUMVAL
:
5343 SET_FIELD_ENUMVAL (new_type
->field (i
),
5344 TYPE_FIELD_ENUMVAL (type
, i
));
5346 case FIELD_LOC_KIND_PHYSADDR
:
5347 SET_FIELD_PHYSADDR (new_type
->field (i
),
5348 TYPE_FIELD_STATIC_PHYSADDR (type
, i
));
5350 case FIELD_LOC_KIND_PHYSNAME
:
5351 SET_FIELD_PHYSNAME (new_type
->field (i
),
5352 xstrdup (TYPE_FIELD_STATIC_PHYSNAME (type
,
5356 internal_error (__FILE__
, __LINE__
,
5357 _("Unexpected type field location kind: %d"),
5358 TYPE_FIELD_LOC_KIND (type
, i
));
5363 /* For range types, copy the bounds information. */
5364 if (type
->code () == TYPE_CODE_RANGE
)
5366 TYPE_RANGE_DATA (new_type
) = (struct range_bounds
*)
5367 TYPE_ALLOC (new_type
, sizeof (struct range_bounds
));
5368 *TYPE_RANGE_DATA (new_type
) = *TYPE_RANGE_DATA (type
);
5371 if (type
->main_type
->dyn_prop_list
!= NULL
)
5372 new_type
->main_type
->dyn_prop_list
5373 = copy_dynamic_prop_list (&objfile
->objfile_obstack
,
5374 type
->main_type
->dyn_prop_list
);
5377 /* Copy pointers to other types. */
5378 if (TYPE_TARGET_TYPE (type
))
5379 TYPE_TARGET_TYPE (new_type
) =
5380 copy_type_recursive (objfile
,
5381 TYPE_TARGET_TYPE (type
),
5384 /* Maybe copy the type_specific bits.
5386 NOTE drow/2005-12-09: We do not copy the C++-specific bits like
5387 base classes and methods. There's no fundamental reason why we
5388 can't, but at the moment it is not needed. */
5390 switch (TYPE_SPECIFIC_FIELD (type
))
5392 case TYPE_SPECIFIC_NONE
:
5394 case TYPE_SPECIFIC_FUNC
:
5395 INIT_FUNC_SPECIFIC (new_type
);
5396 TYPE_CALLING_CONVENTION (new_type
) = TYPE_CALLING_CONVENTION (type
);
5397 TYPE_NO_RETURN (new_type
) = TYPE_NO_RETURN (type
);
5398 TYPE_TAIL_CALL_LIST (new_type
) = NULL
;
5400 case TYPE_SPECIFIC_FLOATFORMAT
:
5401 TYPE_FLOATFORMAT (new_type
) = TYPE_FLOATFORMAT (type
);
5403 case TYPE_SPECIFIC_CPLUS_STUFF
:
5404 INIT_CPLUS_SPECIFIC (new_type
);
5406 case TYPE_SPECIFIC_GNAT_STUFF
:
5407 INIT_GNAT_SPECIFIC (new_type
);
5409 case TYPE_SPECIFIC_SELF_TYPE
:
5410 set_type_self_type (new_type
,
5411 copy_type_recursive (objfile
, TYPE_SELF_TYPE (type
),
5415 gdb_assert_not_reached ("bad type_specific_kind");
5421 /* Make a copy of the given TYPE, except that the pointer & reference
5422 types are not preserved.
5424 This function assumes that the given type has an associated objfile.
5425 This objfile is used to allocate the new type. */
5428 copy_type (const struct type
*type
)
5430 struct type
*new_type
;
5432 gdb_assert (TYPE_OBJFILE_OWNED (type
));
5434 new_type
= alloc_type_copy (type
);
5435 TYPE_INSTANCE_FLAGS (new_type
) = TYPE_INSTANCE_FLAGS (type
);
5436 TYPE_LENGTH (new_type
) = TYPE_LENGTH (type
);
5437 memcpy (TYPE_MAIN_TYPE (new_type
), TYPE_MAIN_TYPE (type
),
5438 sizeof (struct main_type
));
5439 if (type
->main_type
->dyn_prop_list
!= NULL
)
5440 new_type
->main_type
->dyn_prop_list
5441 = copy_dynamic_prop_list (&TYPE_OBJFILE (type
) -> objfile_obstack
,
5442 type
->main_type
->dyn_prop_list
);
5447 /* Helper functions to initialize architecture-specific types. */
5449 /* Allocate a type structure associated with GDBARCH and set its
5450 CODE, LENGTH, and NAME fields. */
5453 arch_type (struct gdbarch
*gdbarch
,
5454 enum type_code code
, int bit
, const char *name
)
5458 type
= alloc_type_arch (gdbarch
);
5459 set_type_code (type
, code
);
5460 gdb_assert ((bit
% TARGET_CHAR_BIT
) == 0);
5461 TYPE_LENGTH (type
) = bit
/ TARGET_CHAR_BIT
;
5464 type
->set_name (gdbarch_obstack_strdup (gdbarch
, name
));
5469 /* Allocate a TYPE_CODE_INT type structure associated with GDBARCH.
5470 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
5471 the type's TYPE_UNSIGNED flag. NAME is the type name. */
5474 arch_integer_type (struct gdbarch
*gdbarch
,
5475 int bit
, int unsigned_p
, const char *name
)
5479 t
= arch_type (gdbarch
, TYPE_CODE_INT
, bit
, name
);
5481 TYPE_UNSIGNED (t
) = 1;
5486 /* Allocate a TYPE_CODE_CHAR type structure associated with GDBARCH.
5487 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
5488 the type's TYPE_UNSIGNED flag. NAME is the type name. */
5491 arch_character_type (struct gdbarch
*gdbarch
,
5492 int bit
, int unsigned_p
, const char *name
)
5496 t
= arch_type (gdbarch
, TYPE_CODE_CHAR
, bit
, name
);
5498 TYPE_UNSIGNED (t
) = 1;
5503 /* Allocate a TYPE_CODE_BOOL type structure associated with GDBARCH.
5504 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
5505 the type's TYPE_UNSIGNED flag. NAME is the type name. */
5508 arch_boolean_type (struct gdbarch
*gdbarch
,
5509 int bit
, int unsigned_p
, const char *name
)
5513 t
= arch_type (gdbarch
, TYPE_CODE_BOOL
, bit
, name
);
5515 TYPE_UNSIGNED (t
) = 1;
5520 /* Allocate a TYPE_CODE_FLT type structure associated with GDBARCH.
5521 BIT is the type size in bits; if BIT equals -1, the size is
5522 determined by the floatformat. NAME is the type name. Set the
5523 TYPE_FLOATFORMAT from FLOATFORMATS. */
5526 arch_float_type (struct gdbarch
*gdbarch
,
5527 int bit
, const char *name
,
5528 const struct floatformat
**floatformats
)
5530 const struct floatformat
*fmt
= floatformats
[gdbarch_byte_order (gdbarch
)];
5533 bit
= verify_floatformat (bit
, fmt
);
5534 t
= arch_type (gdbarch
, TYPE_CODE_FLT
, bit
, name
);
5535 TYPE_FLOATFORMAT (t
) = fmt
;
5540 /* Allocate a TYPE_CODE_DECFLOAT type structure associated with GDBARCH.
5541 BIT is the type size in bits. NAME is the type name. */
5544 arch_decfloat_type (struct gdbarch
*gdbarch
, int bit
, const char *name
)
5548 t
= arch_type (gdbarch
, TYPE_CODE_DECFLOAT
, bit
, name
);
5552 /* Allocate a TYPE_CODE_PTR type structure associated with GDBARCH.
5553 BIT is the pointer type size in bits. NAME is the type name.
5554 TARGET_TYPE is the pointer target type. Always sets the pointer type's
5555 TYPE_UNSIGNED flag. */
5558 arch_pointer_type (struct gdbarch
*gdbarch
,
5559 int bit
, const char *name
, struct type
*target_type
)
5563 t
= arch_type (gdbarch
, TYPE_CODE_PTR
, bit
, name
);
5564 TYPE_TARGET_TYPE (t
) = target_type
;
5565 TYPE_UNSIGNED (t
) = 1;
5569 /* Allocate a TYPE_CODE_FLAGS type structure associated with GDBARCH.
5570 NAME is the type name. BIT is the size of the flag word in bits. */
5573 arch_flags_type (struct gdbarch
*gdbarch
, const char *name
, int bit
)
5577 type
= arch_type (gdbarch
, TYPE_CODE_FLAGS
, bit
, name
);
5578 TYPE_UNSIGNED (type
) = 1;
5579 type
->set_num_fields (0);
5580 /* Pre-allocate enough space assuming every field is one bit. */
5582 ((struct field
*) TYPE_ZALLOC (type
, bit
* sizeof (struct field
)));
5587 /* Add field to TYPE_CODE_FLAGS type TYPE to indicate the bit at
5588 position BITPOS is called NAME. Pass NAME as "" for fields that
5589 should not be printed. */
5592 append_flags_type_field (struct type
*type
, int start_bitpos
, int nr_bits
,
5593 struct type
*field_type
, const char *name
)
5595 int type_bitsize
= TYPE_LENGTH (type
) * TARGET_CHAR_BIT
;
5596 int field_nr
= type
->num_fields ();
5598 gdb_assert (type
->code () == TYPE_CODE_FLAGS
);
5599 gdb_assert (type
->num_fields () + 1 <= type_bitsize
);
5600 gdb_assert (start_bitpos
>= 0 && start_bitpos
< type_bitsize
);
5601 gdb_assert (nr_bits
>= 1 && nr_bits
<= type_bitsize
);
5602 gdb_assert (name
!= NULL
);
5604 TYPE_FIELD_NAME (type
, field_nr
) = xstrdup (name
);
5605 type
->field (field_nr
).set_type (field_type
);
5606 SET_FIELD_BITPOS (type
->field (field_nr
), start_bitpos
);
5607 TYPE_FIELD_BITSIZE (type
, field_nr
) = nr_bits
;
5608 type
->set_num_fields (type
->num_fields () + 1);
5611 /* Special version of append_flags_type_field to add a flag field.
5612 Add field to TYPE_CODE_FLAGS type TYPE to indicate the bit at
5613 position BITPOS is called NAME. */
5616 append_flags_type_flag (struct type
*type
, int bitpos
, const char *name
)
5618 struct gdbarch
*gdbarch
= get_type_arch (type
);
5620 append_flags_type_field (type
, bitpos
, 1,
5621 builtin_type (gdbarch
)->builtin_bool
,
5625 /* Allocate a TYPE_CODE_STRUCT or TYPE_CODE_UNION type structure (as
5626 specified by CODE) associated with GDBARCH. NAME is the type name. */
5629 arch_composite_type (struct gdbarch
*gdbarch
, const char *name
,
5630 enum type_code code
)
5634 gdb_assert (code
== TYPE_CODE_STRUCT
|| code
== TYPE_CODE_UNION
);
5635 t
= arch_type (gdbarch
, code
, 0, NULL
);
5637 INIT_CPLUS_SPECIFIC (t
);
5641 /* Add new field with name NAME and type FIELD to composite type T.
5642 Do not set the field's position or adjust the type's length;
5643 the caller should do so. Return the new field. */
5646 append_composite_type_field_raw (struct type
*t
, const char *name
,
5651 t
->set_num_fields (t
->num_fields () + 1);
5652 t
->set_fields (XRESIZEVEC (struct field
, t
->fields (),
5654 f
= &t
->field (t
->num_fields () - 1);
5655 memset (f
, 0, sizeof f
[0]);
5656 f
[0].set_type (field
);
5657 FIELD_NAME (f
[0]) = name
;
5661 /* Add new field with name NAME and type FIELD to composite type T.
5662 ALIGNMENT (if non-zero) specifies the minimum field alignment. */
5665 append_composite_type_field_aligned (struct type
*t
, const char *name
,
5666 struct type
*field
, int alignment
)
5668 struct field
*f
= append_composite_type_field_raw (t
, name
, field
);
5670 if (t
->code () == TYPE_CODE_UNION
)
5672 if (TYPE_LENGTH (t
) < TYPE_LENGTH (field
))
5673 TYPE_LENGTH (t
) = TYPE_LENGTH (field
);
5675 else if (t
->code () == TYPE_CODE_STRUCT
)
5677 TYPE_LENGTH (t
) = TYPE_LENGTH (t
) + TYPE_LENGTH (field
);
5678 if (t
->num_fields () > 1)
5680 SET_FIELD_BITPOS (f
[0],
5681 (FIELD_BITPOS (f
[-1])
5682 + (TYPE_LENGTH (f
[-1].type ())
5683 * TARGET_CHAR_BIT
)));
5689 alignment
*= TARGET_CHAR_BIT
;
5690 left
= FIELD_BITPOS (f
[0]) % alignment
;
5694 SET_FIELD_BITPOS (f
[0], FIELD_BITPOS (f
[0]) + (alignment
- left
));
5695 TYPE_LENGTH (t
) += (alignment
- left
) / TARGET_CHAR_BIT
;
5702 /* Add new field with name NAME and type FIELD to composite type T. */
5705 append_composite_type_field (struct type
*t
, const char *name
,
5708 append_composite_type_field_aligned (t
, name
, field
, 0);
5711 static struct gdbarch_data
*gdbtypes_data
;
5713 const struct builtin_type
*
5714 builtin_type (struct gdbarch
*gdbarch
)
5716 return (const struct builtin_type
*) gdbarch_data (gdbarch
, gdbtypes_data
);
5720 gdbtypes_post_init (struct gdbarch
*gdbarch
)
5722 struct builtin_type
*builtin_type
5723 = GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct builtin_type
);
5726 builtin_type
->builtin_void
5727 = arch_type (gdbarch
, TYPE_CODE_VOID
, TARGET_CHAR_BIT
, "void");
5728 builtin_type
->builtin_char
5729 = arch_integer_type (gdbarch
, TARGET_CHAR_BIT
,
5730 !gdbarch_char_signed (gdbarch
), "char");
5731 TYPE_NOSIGN (builtin_type
->builtin_char
) = 1;
5732 builtin_type
->builtin_signed_char
5733 = arch_integer_type (gdbarch
, TARGET_CHAR_BIT
,
5735 builtin_type
->builtin_unsigned_char
5736 = arch_integer_type (gdbarch
, TARGET_CHAR_BIT
,
5737 1, "unsigned char");
5738 builtin_type
->builtin_short
5739 = arch_integer_type (gdbarch
, gdbarch_short_bit (gdbarch
),
5741 builtin_type
->builtin_unsigned_short
5742 = arch_integer_type (gdbarch
, gdbarch_short_bit (gdbarch
),
5743 1, "unsigned short");
5744 builtin_type
->builtin_int
5745 = arch_integer_type (gdbarch
, gdbarch_int_bit (gdbarch
),
5747 builtin_type
->builtin_unsigned_int
5748 = arch_integer_type (gdbarch
, gdbarch_int_bit (gdbarch
),
5750 builtin_type
->builtin_long
5751 = arch_integer_type (gdbarch
, gdbarch_long_bit (gdbarch
),
5753 builtin_type
->builtin_unsigned_long
5754 = arch_integer_type (gdbarch
, gdbarch_long_bit (gdbarch
),
5755 1, "unsigned long");
5756 builtin_type
->builtin_long_long
5757 = arch_integer_type (gdbarch
, gdbarch_long_long_bit (gdbarch
),
5759 builtin_type
->builtin_unsigned_long_long
5760 = arch_integer_type (gdbarch
, gdbarch_long_long_bit (gdbarch
),
5761 1, "unsigned long long");
5762 builtin_type
->builtin_half
5763 = arch_float_type (gdbarch
, gdbarch_half_bit (gdbarch
),
5764 "half", gdbarch_half_format (gdbarch
));
5765 builtin_type
->builtin_float
5766 = arch_float_type (gdbarch
, gdbarch_float_bit (gdbarch
),
5767 "float", gdbarch_float_format (gdbarch
));
5768 builtin_type
->builtin_double
5769 = arch_float_type (gdbarch
, gdbarch_double_bit (gdbarch
),
5770 "double", gdbarch_double_format (gdbarch
));
5771 builtin_type
->builtin_long_double
5772 = arch_float_type (gdbarch
, gdbarch_long_double_bit (gdbarch
),
5773 "long double", gdbarch_long_double_format (gdbarch
));
5774 builtin_type
->builtin_complex
5775 = init_complex_type ("complex", builtin_type
->builtin_float
);
5776 builtin_type
->builtin_double_complex
5777 = init_complex_type ("double complex", builtin_type
->builtin_double
);
5778 builtin_type
->builtin_string
5779 = arch_type (gdbarch
, TYPE_CODE_STRING
, TARGET_CHAR_BIT
, "string");
5780 builtin_type
->builtin_bool
5781 = arch_type (gdbarch
, TYPE_CODE_BOOL
, TARGET_CHAR_BIT
, "bool");
5783 /* The following three are about decimal floating point types, which
5784 are 32-bits, 64-bits and 128-bits respectively. */
5785 builtin_type
->builtin_decfloat
5786 = arch_decfloat_type (gdbarch
, 32, "_Decimal32");
5787 builtin_type
->builtin_decdouble
5788 = arch_decfloat_type (gdbarch
, 64, "_Decimal64");
5789 builtin_type
->builtin_declong
5790 = arch_decfloat_type (gdbarch
, 128, "_Decimal128");
5792 /* "True" character types. */
5793 builtin_type
->builtin_true_char
5794 = arch_character_type (gdbarch
, TARGET_CHAR_BIT
, 0, "true character");
5795 builtin_type
->builtin_true_unsigned_char
5796 = arch_character_type (gdbarch
, TARGET_CHAR_BIT
, 1, "true character");
5798 /* Fixed-size integer types. */
5799 builtin_type
->builtin_int0
5800 = arch_integer_type (gdbarch
, 0, 0, "int0_t");
5801 builtin_type
->builtin_int8
5802 = arch_integer_type (gdbarch
, 8, 0, "int8_t");
5803 builtin_type
->builtin_uint8
5804 = arch_integer_type (gdbarch
, 8, 1, "uint8_t");
5805 builtin_type
->builtin_int16
5806 = arch_integer_type (gdbarch
, 16, 0, "int16_t");
5807 builtin_type
->builtin_uint16
5808 = arch_integer_type (gdbarch
, 16, 1, "uint16_t");
5809 builtin_type
->builtin_int24
5810 = arch_integer_type (gdbarch
, 24, 0, "int24_t");
5811 builtin_type
->builtin_uint24
5812 = arch_integer_type (gdbarch
, 24, 1, "uint24_t");
5813 builtin_type
->builtin_int32
5814 = arch_integer_type (gdbarch
, 32, 0, "int32_t");
5815 builtin_type
->builtin_uint32
5816 = arch_integer_type (gdbarch
, 32, 1, "uint32_t");
5817 builtin_type
->builtin_int64
5818 = arch_integer_type (gdbarch
, 64, 0, "int64_t");
5819 builtin_type
->builtin_uint64
5820 = arch_integer_type (gdbarch
, 64, 1, "uint64_t");
5821 builtin_type
->builtin_int128
5822 = arch_integer_type (gdbarch
, 128, 0, "int128_t");
5823 builtin_type
->builtin_uint128
5824 = arch_integer_type (gdbarch
, 128, 1, "uint128_t");
5825 TYPE_INSTANCE_FLAGS (builtin_type
->builtin_int8
) |=
5826 TYPE_INSTANCE_FLAG_NOTTEXT
;
5827 TYPE_INSTANCE_FLAGS (builtin_type
->builtin_uint8
) |=
5828 TYPE_INSTANCE_FLAG_NOTTEXT
;
5830 /* Wide character types. */
5831 builtin_type
->builtin_char16
5832 = arch_integer_type (gdbarch
, 16, 1, "char16_t");
5833 builtin_type
->builtin_char32
5834 = arch_integer_type (gdbarch
, 32, 1, "char32_t");
5835 builtin_type
->builtin_wchar
5836 = arch_integer_type (gdbarch
, gdbarch_wchar_bit (gdbarch
),
5837 !gdbarch_wchar_signed (gdbarch
), "wchar_t");
5839 /* Default data/code pointer types. */
5840 builtin_type
->builtin_data_ptr
5841 = lookup_pointer_type (builtin_type
->builtin_void
);
5842 builtin_type
->builtin_func_ptr
5843 = lookup_pointer_type (lookup_function_type (builtin_type
->builtin_void
));
5844 builtin_type
->builtin_func_func
5845 = lookup_function_type (builtin_type
->builtin_func_ptr
);
5847 /* This type represents a GDB internal function. */
5848 builtin_type
->internal_fn
5849 = arch_type (gdbarch
, TYPE_CODE_INTERNAL_FUNCTION
, 0,
5850 "<internal function>");
5852 /* This type represents an xmethod. */
5853 builtin_type
->xmethod
5854 = arch_type (gdbarch
, TYPE_CODE_XMETHOD
, 0, "<xmethod>");
5856 return builtin_type
;
5859 /* This set of objfile-based types is intended to be used by symbol
5860 readers as basic types. */
5862 static const struct objfile_key
<struct objfile_type
,
5863 gdb::noop_deleter
<struct objfile_type
>>
5866 const struct objfile_type
*
5867 objfile_type (struct objfile
*objfile
)
5869 struct gdbarch
*gdbarch
;
5870 struct objfile_type
*objfile_type
= objfile_type_data
.get (objfile
);
5873 return objfile_type
;
5875 objfile_type
= OBSTACK_CALLOC (&objfile
->objfile_obstack
,
5876 1, struct objfile_type
);
5878 /* Use the objfile architecture to determine basic type properties. */
5879 gdbarch
= objfile
->arch ();
5882 objfile_type
->builtin_void
5883 = init_type (objfile
, TYPE_CODE_VOID
, TARGET_CHAR_BIT
, "void");
5884 objfile_type
->builtin_char
5885 = init_integer_type (objfile
, TARGET_CHAR_BIT
,
5886 !gdbarch_char_signed (gdbarch
), "char");
5887 TYPE_NOSIGN (objfile_type
->builtin_char
) = 1;
5888 objfile_type
->builtin_signed_char
5889 = init_integer_type (objfile
, TARGET_CHAR_BIT
,
5891 objfile_type
->builtin_unsigned_char
5892 = init_integer_type (objfile
, TARGET_CHAR_BIT
,
5893 1, "unsigned char");
5894 objfile_type
->builtin_short
5895 = init_integer_type (objfile
, gdbarch_short_bit (gdbarch
),
5897 objfile_type
->builtin_unsigned_short
5898 = init_integer_type (objfile
, gdbarch_short_bit (gdbarch
),
5899 1, "unsigned short");
5900 objfile_type
->builtin_int
5901 = init_integer_type (objfile
, gdbarch_int_bit (gdbarch
),
5903 objfile_type
->builtin_unsigned_int
5904 = init_integer_type (objfile
, gdbarch_int_bit (gdbarch
),
5906 objfile_type
->builtin_long
5907 = init_integer_type (objfile
, gdbarch_long_bit (gdbarch
),
5909 objfile_type
->builtin_unsigned_long
5910 = init_integer_type (objfile
, gdbarch_long_bit (gdbarch
),
5911 1, "unsigned long");
5912 objfile_type
->builtin_long_long
5913 = init_integer_type (objfile
, gdbarch_long_long_bit (gdbarch
),
5915 objfile_type
->builtin_unsigned_long_long
5916 = init_integer_type (objfile
, gdbarch_long_long_bit (gdbarch
),
5917 1, "unsigned long long");
5918 objfile_type
->builtin_float
5919 = init_float_type (objfile
, gdbarch_float_bit (gdbarch
),
5920 "float", gdbarch_float_format (gdbarch
));
5921 objfile_type
->builtin_double
5922 = init_float_type (objfile
, gdbarch_double_bit (gdbarch
),
5923 "double", gdbarch_double_format (gdbarch
));
5924 objfile_type
->builtin_long_double
5925 = init_float_type (objfile
, gdbarch_long_double_bit (gdbarch
),
5926 "long double", gdbarch_long_double_format (gdbarch
));
5928 /* This type represents a type that was unrecognized in symbol read-in. */
5929 objfile_type
->builtin_error
5930 = init_type (objfile
, TYPE_CODE_ERROR
, 0, "<unknown type>");
5932 /* The following set of types is used for symbols with no
5933 debug information. */
5934 objfile_type
->nodebug_text_symbol
5935 = init_type (objfile
, TYPE_CODE_FUNC
, TARGET_CHAR_BIT
,
5936 "<text variable, no debug info>");
5937 objfile_type
->nodebug_text_gnu_ifunc_symbol
5938 = init_type (objfile
, TYPE_CODE_FUNC
, TARGET_CHAR_BIT
,
5939 "<text gnu-indirect-function variable, no debug info>");
5940 TYPE_GNU_IFUNC (objfile_type
->nodebug_text_gnu_ifunc_symbol
) = 1;
5941 objfile_type
->nodebug_got_plt_symbol
5942 = init_pointer_type (objfile
, gdbarch_addr_bit (gdbarch
),
5943 "<text from jump slot in .got.plt, no debug info>",
5944 objfile_type
->nodebug_text_symbol
);
5945 objfile_type
->nodebug_data_symbol
5946 = init_nodebug_var_type (objfile
, "<data variable, no debug info>");
5947 objfile_type
->nodebug_unknown_symbol
5948 = init_nodebug_var_type (objfile
, "<variable (not text or data), no debug info>");
5949 objfile_type
->nodebug_tls_symbol
5950 = init_nodebug_var_type (objfile
, "<thread local variable, no debug info>");
5952 /* NOTE: on some targets, addresses and pointers are not necessarily
5956 - gdb's `struct type' always describes the target's
5958 - gdb's `struct value' objects should always hold values in
5960 - gdb's CORE_ADDR values are addresses in the unified virtual
5961 address space that the assembler and linker work with. Thus,
5962 since target_read_memory takes a CORE_ADDR as an argument, it
5963 can access any memory on the target, even if the processor has
5964 separate code and data address spaces.
5966 In this context, objfile_type->builtin_core_addr is a bit odd:
5967 it's a target type for a value the target will never see. It's
5968 only used to hold the values of (typeless) linker symbols, which
5969 are indeed in the unified virtual address space. */
5971 objfile_type
->builtin_core_addr
5972 = init_integer_type (objfile
, gdbarch_addr_bit (gdbarch
), 1,
5975 objfile_type_data
.set (objfile
, objfile_type
);
5976 return objfile_type
;
5979 void _initialize_gdbtypes ();
5981 _initialize_gdbtypes ()
5983 gdbtypes_data
= gdbarch_data_register_post_init (gdbtypes_post_init
);
5985 add_setshow_zuinteger_cmd ("overload", no_class
, &overload_debug
,
5986 _("Set debugging of C++ overloading."),
5987 _("Show debugging of C++ overloading."),
5988 _("When enabled, ranking of the "
5989 "functions is displayed."),
5991 show_overload_debug
,
5992 &setdebuglist
, &showdebuglist
);
5994 /* Add user knob for controlling resolution of opaque types. */
5995 add_setshow_boolean_cmd ("opaque-type-resolution", class_support
,
5996 &opaque_type_resolution
,
5997 _("Set resolution of opaque struct/class/union"
5998 " types (if set before loading symbols)."),
5999 _("Show resolution of opaque struct/class/union"
6000 " types (if set before loading symbols)."),
6002 show_opaque_type_resolution
,
6003 &setlist
, &showlist
);
6005 /* Add an option to permit non-strict type checking. */
6006 add_setshow_boolean_cmd ("type", class_support
,
6007 &strict_type_checking
,
6008 _("Set strict type checking."),
6009 _("Show strict type checking."),
6011 show_strict_type_checking
,
6012 &setchecklist
, &showchecklist
);