1 /* Support routines for manipulating internal types for GDB.
3 Copyright (C) 1992-2020 Free Software Foundation, Inc.
5 Contributed by Cygnus Support, using pieces from other GDB modules.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
28 #include "expression.h"
33 #include "complaints.h"
37 #include "cp-support.h"
39 #include "dwarf2/loc.h"
41 #include "floatformat.h"
44 /* Initialize BADNESS constants. */
46 const struct rank LENGTH_MISMATCH_BADNESS
= {100,0};
48 const struct rank TOO_FEW_PARAMS_BADNESS
= {100,0};
49 const struct rank INCOMPATIBLE_TYPE_BADNESS
= {100,0};
51 const struct rank EXACT_MATCH_BADNESS
= {0,0};
53 const struct rank INTEGER_PROMOTION_BADNESS
= {1,0};
54 const struct rank FLOAT_PROMOTION_BADNESS
= {1,0};
55 const struct rank BASE_PTR_CONVERSION_BADNESS
= {1,0};
56 const struct rank CV_CONVERSION_BADNESS
= {1, 0};
57 const struct rank INTEGER_CONVERSION_BADNESS
= {2,0};
58 const struct rank FLOAT_CONVERSION_BADNESS
= {2,0};
59 const struct rank INT_FLOAT_CONVERSION_BADNESS
= {2,0};
60 const struct rank VOID_PTR_CONVERSION_BADNESS
= {2,0};
61 const struct rank BOOL_CONVERSION_BADNESS
= {3,0};
62 const struct rank BASE_CONVERSION_BADNESS
= {2,0};
63 const struct rank REFERENCE_CONVERSION_BADNESS
= {2,0};
64 const struct rank REFERENCE_SEE_THROUGH_BADNESS
= {0,1};
65 const struct rank NULL_POINTER_CONVERSION_BADNESS
= {2,0};
66 const struct rank NS_POINTER_CONVERSION_BADNESS
= {10,0};
67 const struct rank NS_INTEGER_POINTER_CONVERSION_BADNESS
= {3,0};
69 /* Floatformat pairs. */
70 const struct floatformat
*floatformats_ieee_half
[BFD_ENDIAN_UNKNOWN
] = {
71 &floatformat_ieee_half_big
,
72 &floatformat_ieee_half_little
74 const struct floatformat
*floatformats_ieee_single
[BFD_ENDIAN_UNKNOWN
] = {
75 &floatformat_ieee_single_big
,
76 &floatformat_ieee_single_little
78 const struct floatformat
*floatformats_ieee_double
[BFD_ENDIAN_UNKNOWN
] = {
79 &floatformat_ieee_double_big
,
80 &floatformat_ieee_double_little
82 const struct floatformat
*floatformats_ieee_double_littlebyte_bigword
[BFD_ENDIAN_UNKNOWN
] = {
83 &floatformat_ieee_double_big
,
84 &floatformat_ieee_double_littlebyte_bigword
86 const struct floatformat
*floatformats_i387_ext
[BFD_ENDIAN_UNKNOWN
] = {
87 &floatformat_i387_ext
,
90 const struct floatformat
*floatformats_m68881_ext
[BFD_ENDIAN_UNKNOWN
] = {
91 &floatformat_m68881_ext
,
92 &floatformat_m68881_ext
94 const struct floatformat
*floatformats_arm_ext
[BFD_ENDIAN_UNKNOWN
] = {
95 &floatformat_arm_ext_big
,
96 &floatformat_arm_ext_littlebyte_bigword
98 const struct floatformat
*floatformats_ia64_spill
[BFD_ENDIAN_UNKNOWN
] = {
99 &floatformat_ia64_spill_big
,
100 &floatformat_ia64_spill_little
102 const struct floatformat
*floatformats_ia64_quad
[BFD_ENDIAN_UNKNOWN
] = {
103 &floatformat_ia64_quad_big
,
104 &floatformat_ia64_quad_little
106 const struct floatformat
*floatformats_vax_f
[BFD_ENDIAN_UNKNOWN
] = {
110 const struct floatformat
*floatformats_vax_d
[BFD_ENDIAN_UNKNOWN
] = {
114 const struct floatformat
*floatformats_ibm_long_double
[BFD_ENDIAN_UNKNOWN
] = {
115 &floatformat_ibm_long_double_big
,
116 &floatformat_ibm_long_double_little
119 /* Should opaque types be resolved? */
121 static bool opaque_type_resolution
= true;
123 /* See gdbtypes.h. */
125 unsigned int overload_debug
= 0;
127 /* A flag to enable strict type checking. */
129 static bool strict_type_checking
= true;
131 /* A function to show whether opaque types are resolved. */
134 show_opaque_type_resolution (struct ui_file
*file
, int from_tty
,
135 struct cmd_list_element
*c
,
138 fprintf_filtered (file
, _("Resolution of opaque struct/class/union types "
139 "(if set before loading symbols) is %s.\n"),
143 /* A function to show whether C++ overload debugging is enabled. */
146 show_overload_debug (struct ui_file
*file
, int from_tty
,
147 struct cmd_list_element
*c
, const char *value
)
149 fprintf_filtered (file
, _("Debugging of C++ overloading is %s.\n"),
153 /* A function to show the status of strict type checking. */
156 show_strict_type_checking (struct ui_file
*file
, int from_tty
,
157 struct cmd_list_element
*c
, const char *value
)
159 fprintf_filtered (file
, _("Strict type checking is %s.\n"), value
);
163 /* Allocate a new OBJFILE-associated type structure and fill it
164 with some defaults. Space for the type structure is allocated
165 on the objfile's objfile_obstack. */
168 alloc_type (struct objfile
*objfile
)
172 gdb_assert (objfile
!= NULL
);
174 /* Alloc the structure and start off with all fields zeroed. */
175 type
= OBSTACK_ZALLOC (&objfile
->objfile_obstack
, struct type
);
176 TYPE_MAIN_TYPE (type
) = OBSTACK_ZALLOC (&objfile
->objfile_obstack
,
178 OBJSTAT (objfile
, n_types
++);
180 TYPE_OBJFILE_OWNED (type
) = 1;
181 TYPE_OWNER (type
).objfile
= objfile
;
183 /* Initialize the fields that might not be zero. */
185 type
->set_code (TYPE_CODE_UNDEF
);
186 TYPE_CHAIN (type
) = type
; /* Chain back to itself. */
191 /* Allocate a new GDBARCH-associated type structure and fill it
192 with some defaults. Space for the type structure is allocated
193 on the obstack associated with GDBARCH. */
196 alloc_type_arch (struct gdbarch
*gdbarch
)
200 gdb_assert (gdbarch
!= NULL
);
202 /* Alloc the structure and start off with all fields zeroed. */
204 type
= GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct type
);
205 TYPE_MAIN_TYPE (type
) = GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct main_type
);
207 TYPE_OBJFILE_OWNED (type
) = 0;
208 TYPE_OWNER (type
).gdbarch
= gdbarch
;
210 /* Initialize the fields that might not be zero. */
212 type
->set_code (TYPE_CODE_UNDEF
);
213 TYPE_CHAIN (type
) = type
; /* Chain back to itself. */
218 /* If TYPE is objfile-associated, allocate a new type structure
219 associated with the same objfile. If TYPE is gdbarch-associated,
220 allocate a new type structure associated with the same gdbarch. */
223 alloc_type_copy (const struct type
*type
)
225 if (TYPE_OBJFILE_OWNED (type
))
226 return alloc_type (TYPE_OWNER (type
).objfile
);
228 return alloc_type_arch (TYPE_OWNER (type
).gdbarch
);
231 /* If TYPE is gdbarch-associated, return that architecture.
232 If TYPE is objfile-associated, return that objfile's architecture. */
235 get_type_arch (const struct type
*type
)
237 struct gdbarch
*arch
;
239 if (TYPE_OBJFILE_OWNED (type
))
240 arch
= TYPE_OWNER (type
).objfile
->arch ();
242 arch
= TYPE_OWNER (type
).gdbarch
;
244 /* The ARCH can be NULL if TYPE is associated with neither an objfile nor
245 a gdbarch, however, this is very rare, and even then, in most cases
246 that get_type_arch is called, we assume that a non-NULL value is
248 gdb_assert (arch
!= NULL
);
252 /* See gdbtypes.h. */
255 get_target_type (struct type
*type
)
259 type
= TYPE_TARGET_TYPE (type
);
261 type
= check_typedef (type
);
267 /* See gdbtypes.h. */
270 type_length_units (struct type
*type
)
272 struct gdbarch
*arch
= get_type_arch (type
);
273 int unit_size
= gdbarch_addressable_memory_unit_size (arch
);
275 return TYPE_LENGTH (type
) / unit_size
;
278 /* Alloc a new type instance structure, fill it with some defaults,
279 and point it at OLDTYPE. Allocate the new type instance from the
280 same place as OLDTYPE. */
283 alloc_type_instance (struct type
*oldtype
)
287 /* Allocate the structure. */
289 if (! TYPE_OBJFILE_OWNED (oldtype
))
290 type
= GDBARCH_OBSTACK_ZALLOC (get_type_arch (oldtype
), struct type
);
292 type
= OBSTACK_ZALLOC (&TYPE_OBJFILE (oldtype
)->objfile_obstack
,
295 TYPE_MAIN_TYPE (type
) = TYPE_MAIN_TYPE (oldtype
);
297 TYPE_CHAIN (type
) = type
; /* Chain back to itself for now. */
302 /* Clear all remnants of the previous type at TYPE, in preparation for
303 replacing it with something else. Preserve owner information. */
306 smash_type (struct type
*type
)
308 int objfile_owned
= TYPE_OBJFILE_OWNED (type
);
309 union type_owner owner
= TYPE_OWNER (type
);
311 memset (TYPE_MAIN_TYPE (type
), 0, sizeof (struct main_type
));
313 /* Restore owner information. */
314 TYPE_OBJFILE_OWNED (type
) = objfile_owned
;
315 TYPE_OWNER (type
) = owner
;
317 /* For now, delete the rings. */
318 TYPE_CHAIN (type
) = type
;
320 /* For now, leave the pointer/reference types alone. */
323 /* Lookup a pointer to a type TYPE. TYPEPTR, if nonzero, points
324 to a pointer to memory where the pointer type should be stored.
325 If *TYPEPTR is zero, update it to point to the pointer type we return.
326 We allocate new memory if needed. */
329 make_pointer_type (struct type
*type
, struct type
**typeptr
)
331 struct type
*ntype
; /* New type */
334 ntype
= TYPE_POINTER_TYPE (type
);
339 return ntype
; /* Don't care about alloc,
340 and have new type. */
341 else if (*typeptr
== 0)
343 *typeptr
= ntype
; /* Tracking alloc, and have new type. */
348 if (typeptr
== 0 || *typeptr
== 0) /* We'll need to allocate one. */
350 ntype
= alloc_type_copy (type
);
354 else /* We have storage, but need to reset it. */
357 chain
= TYPE_CHAIN (ntype
);
359 TYPE_CHAIN (ntype
) = chain
;
362 TYPE_TARGET_TYPE (ntype
) = type
;
363 TYPE_POINTER_TYPE (type
) = ntype
;
365 /* FIXME! Assumes the machine has only one representation for pointers! */
368 = gdbarch_ptr_bit (get_type_arch (type
)) / TARGET_CHAR_BIT
;
369 ntype
->set_code (TYPE_CODE_PTR
);
371 /* Mark pointers as unsigned. The target converts between pointers
372 and addresses (CORE_ADDRs) using gdbarch_pointer_to_address and
373 gdbarch_address_to_pointer. */
374 TYPE_UNSIGNED (ntype
) = 1;
376 /* Update the length of all the other variants of this type. */
377 chain
= TYPE_CHAIN (ntype
);
378 while (chain
!= ntype
)
380 TYPE_LENGTH (chain
) = TYPE_LENGTH (ntype
);
381 chain
= TYPE_CHAIN (chain
);
387 /* Given a type TYPE, return a type of pointers to that type.
388 May need to construct such a type if this is the first use. */
391 lookup_pointer_type (struct type
*type
)
393 return make_pointer_type (type
, (struct type
**) 0);
396 /* Lookup a C++ `reference' to a type TYPE. TYPEPTR, if nonzero,
397 points to a pointer to memory where the reference type should be
398 stored. If *TYPEPTR is zero, update it to point to the reference
399 type we return. We allocate new memory if needed. REFCODE denotes
400 the kind of reference type to lookup (lvalue or rvalue reference). */
403 make_reference_type (struct type
*type
, struct type
**typeptr
,
404 enum type_code refcode
)
406 struct type
*ntype
; /* New type */
407 struct type
**reftype
;
410 gdb_assert (refcode
== TYPE_CODE_REF
|| refcode
== TYPE_CODE_RVALUE_REF
);
412 ntype
= (refcode
== TYPE_CODE_REF
? TYPE_REFERENCE_TYPE (type
)
413 : TYPE_RVALUE_REFERENCE_TYPE (type
));
418 return ntype
; /* Don't care about alloc,
419 and have new type. */
420 else if (*typeptr
== 0)
422 *typeptr
= ntype
; /* Tracking alloc, and have new type. */
427 if (typeptr
== 0 || *typeptr
== 0) /* We'll need to allocate one. */
429 ntype
= alloc_type_copy (type
);
433 else /* We have storage, but need to reset it. */
436 chain
= TYPE_CHAIN (ntype
);
438 TYPE_CHAIN (ntype
) = chain
;
441 TYPE_TARGET_TYPE (ntype
) = type
;
442 reftype
= (refcode
== TYPE_CODE_REF
? &TYPE_REFERENCE_TYPE (type
)
443 : &TYPE_RVALUE_REFERENCE_TYPE (type
));
447 /* FIXME! Assume the machine has only one representation for
448 references, and that it matches the (only) representation for
451 TYPE_LENGTH (ntype
) =
452 gdbarch_ptr_bit (get_type_arch (type
)) / TARGET_CHAR_BIT
;
453 ntype
->set_code (refcode
);
457 /* Update the length of all the other variants of this type. */
458 chain
= TYPE_CHAIN (ntype
);
459 while (chain
!= ntype
)
461 TYPE_LENGTH (chain
) = TYPE_LENGTH (ntype
);
462 chain
= TYPE_CHAIN (chain
);
468 /* Same as above, but caller doesn't care about memory allocation
472 lookup_reference_type (struct type
*type
, enum type_code refcode
)
474 return make_reference_type (type
, (struct type
**) 0, refcode
);
477 /* Lookup the lvalue reference type for the type TYPE. */
480 lookup_lvalue_reference_type (struct type
*type
)
482 return lookup_reference_type (type
, TYPE_CODE_REF
);
485 /* Lookup the rvalue reference type for the type TYPE. */
488 lookup_rvalue_reference_type (struct type
*type
)
490 return lookup_reference_type (type
, TYPE_CODE_RVALUE_REF
);
493 /* Lookup a function type that returns type TYPE. TYPEPTR, if
494 nonzero, points to a pointer to memory where the function type
495 should be stored. If *TYPEPTR is zero, update it to point to the
496 function type we return. We allocate new memory if needed. */
499 make_function_type (struct type
*type
, struct type
**typeptr
)
501 struct type
*ntype
; /* New type */
503 if (typeptr
== 0 || *typeptr
== 0) /* We'll need to allocate one. */
505 ntype
= alloc_type_copy (type
);
509 else /* We have storage, but need to reset it. */
515 TYPE_TARGET_TYPE (ntype
) = type
;
517 TYPE_LENGTH (ntype
) = 1;
518 ntype
->set_code (TYPE_CODE_FUNC
);
520 INIT_FUNC_SPECIFIC (ntype
);
525 /* Given a type TYPE, return a type of functions that return that type.
526 May need to construct such a type if this is the first use. */
529 lookup_function_type (struct type
*type
)
531 return make_function_type (type
, (struct type
**) 0);
534 /* Given a type TYPE and argument types, return the appropriate
535 function type. If the final type in PARAM_TYPES is NULL, make a
539 lookup_function_type_with_arguments (struct type
*type
,
541 struct type
**param_types
)
543 struct type
*fn
= make_function_type (type
, (struct type
**) 0);
548 if (param_types
[nparams
- 1] == NULL
)
551 TYPE_VARARGS (fn
) = 1;
553 else if (check_typedef (param_types
[nparams
- 1])->code ()
557 /* Caller should have ensured this. */
558 gdb_assert (nparams
== 0);
559 TYPE_PROTOTYPED (fn
) = 1;
562 TYPE_PROTOTYPED (fn
) = 1;
565 fn
->set_num_fields (nparams
);
567 ((struct field
*) TYPE_ZALLOC (fn
, nparams
* sizeof (struct field
)));
568 for (i
= 0; i
< nparams
; ++i
)
569 fn
->field (i
).set_type (param_types
[i
]);
574 /* Identify address space identifier by name --
575 return the integer flag defined in gdbtypes.h. */
578 address_space_name_to_int (struct gdbarch
*gdbarch
,
579 const char *space_identifier
)
583 /* Check for known address space delimiters. */
584 if (!strcmp (space_identifier
, "code"))
585 return TYPE_INSTANCE_FLAG_CODE_SPACE
;
586 else if (!strcmp (space_identifier
, "data"))
587 return TYPE_INSTANCE_FLAG_DATA_SPACE
;
588 else if (gdbarch_address_class_name_to_type_flags_p (gdbarch
)
589 && gdbarch_address_class_name_to_type_flags (gdbarch
,
594 error (_("Unknown address space specifier: \"%s\""), space_identifier
);
597 /* Identify address space identifier by integer flag as defined in
598 gdbtypes.h -- return the string version of the adress space name. */
601 address_space_int_to_name (struct gdbarch
*gdbarch
, int space_flag
)
603 if (space_flag
& TYPE_INSTANCE_FLAG_CODE_SPACE
)
605 else if (space_flag
& TYPE_INSTANCE_FLAG_DATA_SPACE
)
607 else if ((space_flag
& TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL
)
608 && gdbarch_address_class_type_flags_to_name_p (gdbarch
))
609 return gdbarch_address_class_type_flags_to_name (gdbarch
, space_flag
);
614 /* Create a new type with instance flags NEW_FLAGS, based on TYPE.
616 If STORAGE is non-NULL, create the new type instance there.
617 STORAGE must be in the same obstack as TYPE. */
620 make_qualified_type (struct type
*type
, int new_flags
,
621 struct type
*storage
)
628 if (TYPE_INSTANCE_FLAGS (ntype
) == new_flags
)
630 ntype
= TYPE_CHAIN (ntype
);
632 while (ntype
!= type
);
634 /* Create a new type instance. */
636 ntype
= alloc_type_instance (type
);
639 /* If STORAGE was provided, it had better be in the same objfile
640 as TYPE. Otherwise, we can't link it into TYPE's cv chain:
641 if one objfile is freed and the other kept, we'd have
642 dangling pointers. */
643 gdb_assert (TYPE_OBJFILE (type
) == TYPE_OBJFILE (storage
));
646 TYPE_MAIN_TYPE (ntype
) = TYPE_MAIN_TYPE (type
);
647 TYPE_CHAIN (ntype
) = ntype
;
650 /* Pointers or references to the original type are not relevant to
652 TYPE_POINTER_TYPE (ntype
) = (struct type
*) 0;
653 TYPE_REFERENCE_TYPE (ntype
) = (struct type
*) 0;
655 /* Chain the new qualified type to the old type. */
656 TYPE_CHAIN (ntype
) = TYPE_CHAIN (type
);
657 TYPE_CHAIN (type
) = ntype
;
659 /* Now set the instance flags and return the new type. */
660 TYPE_INSTANCE_FLAGS (ntype
) = new_flags
;
662 /* Set length of new type to that of the original type. */
663 TYPE_LENGTH (ntype
) = TYPE_LENGTH (type
);
668 /* Make an address-space-delimited variant of a type -- a type that
669 is identical to the one supplied except that it has an address
670 space attribute attached to it (such as "code" or "data").
672 The space attributes "code" and "data" are for Harvard
673 architectures. The address space attributes are for architectures
674 which have alternately sized pointers or pointers with alternate
678 make_type_with_address_space (struct type
*type
, int space_flag
)
680 int new_flags
= ((TYPE_INSTANCE_FLAGS (type
)
681 & ~(TYPE_INSTANCE_FLAG_CODE_SPACE
682 | TYPE_INSTANCE_FLAG_DATA_SPACE
683 | TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL
))
686 return make_qualified_type (type
, new_flags
, NULL
);
689 /* Make a "c-v" variant of a type -- a type that is identical to the
690 one supplied except that it may have const or volatile attributes
691 CNST is a flag for setting the const attribute
692 VOLTL is a flag for setting the volatile attribute
693 TYPE is the base type whose variant we are creating.
695 If TYPEPTR and *TYPEPTR are non-zero, then *TYPEPTR points to
696 storage to hold the new qualified type; *TYPEPTR and TYPE must be
697 in the same objfile. Otherwise, allocate fresh memory for the new
698 type whereever TYPE lives. If TYPEPTR is non-zero, set it to the
699 new type we construct. */
702 make_cv_type (int cnst
, int voltl
,
704 struct type
**typeptr
)
706 struct type
*ntype
; /* New type */
708 int new_flags
= (TYPE_INSTANCE_FLAGS (type
)
709 & ~(TYPE_INSTANCE_FLAG_CONST
710 | TYPE_INSTANCE_FLAG_VOLATILE
));
713 new_flags
|= TYPE_INSTANCE_FLAG_CONST
;
716 new_flags
|= TYPE_INSTANCE_FLAG_VOLATILE
;
718 if (typeptr
&& *typeptr
!= NULL
)
720 /* TYPE and *TYPEPTR must be in the same objfile. We can't have
721 a C-V variant chain that threads across objfiles: if one
722 objfile gets freed, then the other has a broken C-V chain.
724 This code used to try to copy over the main type from TYPE to
725 *TYPEPTR if they were in different objfiles, but that's
726 wrong, too: TYPE may have a field list or member function
727 lists, which refer to types of their own, etc. etc. The
728 whole shebang would need to be copied over recursively; you
729 can't have inter-objfile pointers. The only thing to do is
730 to leave stub types as stub types, and look them up afresh by
731 name each time you encounter them. */
732 gdb_assert (TYPE_OBJFILE (*typeptr
) == TYPE_OBJFILE (type
));
735 ntype
= make_qualified_type (type
, new_flags
,
736 typeptr
? *typeptr
: NULL
);
744 /* Make a 'restrict'-qualified version of TYPE. */
747 make_restrict_type (struct type
*type
)
749 return make_qualified_type (type
,
750 (TYPE_INSTANCE_FLAGS (type
)
751 | TYPE_INSTANCE_FLAG_RESTRICT
),
755 /* Make a type without const, volatile, or restrict. */
758 make_unqualified_type (struct type
*type
)
760 return make_qualified_type (type
,
761 (TYPE_INSTANCE_FLAGS (type
)
762 & ~(TYPE_INSTANCE_FLAG_CONST
763 | TYPE_INSTANCE_FLAG_VOLATILE
764 | TYPE_INSTANCE_FLAG_RESTRICT
)),
768 /* Make a '_Atomic'-qualified version of TYPE. */
771 make_atomic_type (struct type
*type
)
773 return make_qualified_type (type
,
774 (TYPE_INSTANCE_FLAGS (type
)
775 | TYPE_INSTANCE_FLAG_ATOMIC
),
779 /* Replace the contents of ntype with the type *type. This changes the
780 contents, rather than the pointer for TYPE_MAIN_TYPE (ntype); thus
781 the changes are propogated to all types in the TYPE_CHAIN.
783 In order to build recursive types, it's inevitable that we'll need
784 to update types in place --- but this sort of indiscriminate
785 smashing is ugly, and needs to be replaced with something more
786 controlled. TYPE_MAIN_TYPE is a step in this direction; it's not
787 clear if more steps are needed. */
790 replace_type (struct type
*ntype
, struct type
*type
)
794 /* These two types had better be in the same objfile. Otherwise,
795 the assignment of one type's main type structure to the other
796 will produce a type with references to objects (names; field
797 lists; etc.) allocated on an objfile other than its own. */
798 gdb_assert (TYPE_OBJFILE (ntype
) == TYPE_OBJFILE (type
));
800 *TYPE_MAIN_TYPE (ntype
) = *TYPE_MAIN_TYPE (type
);
802 /* The type length is not a part of the main type. Update it for
803 each type on the variant chain. */
807 /* Assert that this element of the chain has no address-class bits
808 set in its flags. Such type variants might have type lengths
809 which are supposed to be different from the non-address-class
810 variants. This assertion shouldn't ever be triggered because
811 symbol readers which do construct address-class variants don't
812 call replace_type(). */
813 gdb_assert (TYPE_ADDRESS_CLASS_ALL (chain
) == 0);
815 TYPE_LENGTH (chain
) = TYPE_LENGTH (type
);
816 chain
= TYPE_CHAIN (chain
);
818 while (ntype
!= chain
);
820 /* Assert that the two types have equivalent instance qualifiers.
821 This should be true for at least all of our debug readers. */
822 gdb_assert (TYPE_INSTANCE_FLAGS (ntype
) == TYPE_INSTANCE_FLAGS (type
));
825 /* Implement direct support for MEMBER_TYPE in GNU C++.
826 May need to construct such a type if this is the first use.
827 The TYPE is the type of the member. The DOMAIN is the type
828 of the aggregate that the member belongs to. */
831 lookup_memberptr_type (struct type
*type
, struct type
*domain
)
835 mtype
= alloc_type_copy (type
);
836 smash_to_memberptr_type (mtype
, domain
, type
);
840 /* Return a pointer-to-method type, for a method of type TO_TYPE. */
843 lookup_methodptr_type (struct type
*to_type
)
847 mtype
= alloc_type_copy (to_type
);
848 smash_to_methodptr_type (mtype
, to_type
);
852 /* Allocate a stub method whose return type is TYPE. This apparently
853 happens for speed of symbol reading, since parsing out the
854 arguments to the method is cpu-intensive, the way we are doing it.
855 So, we will fill in arguments later. This always returns a fresh
859 allocate_stub_method (struct type
*type
)
863 mtype
= alloc_type_copy (type
);
864 mtype
->set_code (TYPE_CODE_METHOD
);
865 TYPE_LENGTH (mtype
) = 1;
866 TYPE_STUB (mtype
) = 1;
867 TYPE_TARGET_TYPE (mtype
) = type
;
868 /* TYPE_SELF_TYPE (mtype) = unknown yet */
872 /* See gdbtypes.h. */
875 operator== (const dynamic_prop
&l
, const dynamic_prop
&r
)
877 if (l
.kind
!= r
.kind
)
885 return l
.data
.const_val
== r
.data
.const_val
;
886 case PROP_ADDR_OFFSET
:
889 return l
.data
.baton
== r
.data
.baton
;
890 case PROP_VARIANT_PARTS
:
891 return l
.data
.variant_parts
== r
.data
.variant_parts
;
893 return l
.data
.original_type
== r
.data
.original_type
;
896 gdb_assert_not_reached ("unhandled dynamic_prop kind");
899 /* See gdbtypes.h. */
902 operator== (const range_bounds
&l
, const range_bounds
&r
)
904 #define FIELD_EQ(FIELD) (l.FIELD == r.FIELD)
906 return (FIELD_EQ (low
)
908 && FIELD_EQ (flag_upper_bound_is_count
)
909 && FIELD_EQ (flag_bound_evaluated
)
915 /* Create a range type with a dynamic range from LOW_BOUND to
916 HIGH_BOUND, inclusive. See create_range_type for further details. */
919 create_range_type (struct type
*result_type
, struct type
*index_type
,
920 const struct dynamic_prop
*low_bound
,
921 const struct dynamic_prop
*high_bound
,
924 /* The INDEX_TYPE should be a type capable of holding the upper and lower
925 bounds, as such a zero sized, or void type makes no sense. */
926 gdb_assert (index_type
->code () != TYPE_CODE_VOID
);
927 gdb_assert (TYPE_LENGTH (index_type
) > 0);
929 if (result_type
== NULL
)
930 result_type
= alloc_type_copy (index_type
);
931 result_type
->set_code (TYPE_CODE_RANGE
);
932 TYPE_TARGET_TYPE (result_type
) = index_type
;
933 if (TYPE_STUB (index_type
))
934 TYPE_TARGET_STUB (result_type
) = 1;
936 TYPE_LENGTH (result_type
) = TYPE_LENGTH (check_typedef (index_type
));
939 = (struct range_bounds
*) TYPE_ZALLOC (result_type
, sizeof (range_bounds
));
940 bounds
->low
= *low_bound
;
941 bounds
->high
= *high_bound
;
944 /* Initialize the stride to be a constant, the value will already be zero
945 thanks to the use of TYPE_ZALLOC above. */
946 bounds
->stride
.kind
= PROP_CONST
;
948 result_type
->set_bounds (bounds
);
950 if (low_bound
->kind
== PROP_CONST
&& low_bound
->data
.const_val
>= 0)
951 TYPE_UNSIGNED (result_type
) = 1;
953 /* Ada allows the declaration of range types whose upper bound is
954 less than the lower bound, so checking the lower bound is not
955 enough. Make sure we do not mark a range type whose upper bound
956 is negative as unsigned. */
957 if (high_bound
->kind
== PROP_CONST
&& high_bound
->data
.const_val
< 0)
958 TYPE_UNSIGNED (result_type
) = 0;
960 TYPE_ENDIANITY_NOT_DEFAULT (result_type
)
961 = TYPE_ENDIANITY_NOT_DEFAULT (index_type
);
966 /* See gdbtypes.h. */
969 create_range_type_with_stride (struct type
*result_type
,
970 struct type
*index_type
,
971 const struct dynamic_prop
*low_bound
,
972 const struct dynamic_prop
*high_bound
,
974 const struct dynamic_prop
*stride
,
977 result_type
= create_range_type (result_type
, index_type
, low_bound
,
980 gdb_assert (stride
!= nullptr);
981 TYPE_RANGE_DATA (result_type
)->stride
= *stride
;
982 TYPE_RANGE_DATA (result_type
)->flag_is_byte_stride
= byte_stride_p
;
989 /* Create a range type using either a blank type supplied in
990 RESULT_TYPE, or creating a new type, inheriting the objfile from
993 Indices will be of type INDEX_TYPE, and will range from LOW_BOUND
994 to HIGH_BOUND, inclusive.
996 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
997 sure it is TYPE_CODE_UNDEF before we bash it into a range type? */
1000 create_static_range_type (struct type
*result_type
, struct type
*index_type
,
1001 LONGEST low_bound
, LONGEST high_bound
)
1003 struct dynamic_prop low
, high
;
1005 low
.kind
= PROP_CONST
;
1006 low
.data
.const_val
= low_bound
;
1008 high
.kind
= PROP_CONST
;
1009 high
.data
.const_val
= high_bound
;
1011 result_type
= create_range_type (result_type
, index_type
, &low
, &high
, 0);
1016 /* Predicate tests whether BOUNDS are static. Returns 1 if all bounds values
1017 are static, otherwise returns 0. */
1020 has_static_range (const struct range_bounds
*bounds
)
1022 /* If the range doesn't have a defined stride then its stride field will
1023 be initialized to the constant 0. */
1024 return (bounds
->low
.kind
== PROP_CONST
1025 && bounds
->high
.kind
== PROP_CONST
1026 && bounds
->stride
.kind
== PROP_CONST
);
1030 /* Set *LOWP and *HIGHP to the lower and upper bounds of discrete type
1031 TYPE. Return 1 if type is a range type, 0 if it is discrete (and
1032 bounds will fit in LONGEST), or -1 otherwise. */
1035 get_discrete_bounds (struct type
*type
, LONGEST
*lowp
, LONGEST
*highp
)
1037 type
= check_typedef (type
);
1038 switch (type
->code ())
1040 case TYPE_CODE_RANGE
:
1041 *lowp
= TYPE_LOW_BOUND (type
);
1042 *highp
= TYPE_HIGH_BOUND (type
);
1043 if (TYPE_TARGET_TYPE (type
)->code () == TYPE_CODE_ENUM
)
1045 if (!discrete_position (TYPE_TARGET_TYPE (type
), *lowp
, lowp
)
1046 || ! discrete_position (TYPE_TARGET_TYPE (type
), *highp
, highp
))
1050 case TYPE_CODE_ENUM
:
1051 if (type
->num_fields () > 0)
1053 /* The enums may not be sorted by value, so search all
1057 *lowp
= *highp
= TYPE_FIELD_ENUMVAL (type
, 0);
1058 for (i
= 0; i
< type
->num_fields (); i
++)
1060 if (TYPE_FIELD_ENUMVAL (type
, i
) < *lowp
)
1061 *lowp
= TYPE_FIELD_ENUMVAL (type
, i
);
1062 if (TYPE_FIELD_ENUMVAL (type
, i
) > *highp
)
1063 *highp
= TYPE_FIELD_ENUMVAL (type
, i
);
1066 /* Set unsigned indicator if warranted. */
1069 TYPE_UNSIGNED (type
) = 1;
1078 case TYPE_CODE_BOOL
:
1083 if (TYPE_LENGTH (type
) > sizeof (LONGEST
)) /* Too big */
1085 if (!TYPE_UNSIGNED (type
))
1087 *lowp
= -(1 << (TYPE_LENGTH (type
) * TARGET_CHAR_BIT
- 1));
1088 *highp
= -*lowp
- 1;
1092 case TYPE_CODE_CHAR
:
1094 /* This round-about calculation is to avoid shifting by
1095 TYPE_LENGTH (type) * TARGET_CHAR_BIT, which will not work
1096 if TYPE_LENGTH (type) == sizeof (LONGEST). */
1097 *highp
= 1 << (TYPE_LENGTH (type
) * TARGET_CHAR_BIT
- 1);
1098 *highp
= (*highp
- 1) | *highp
;
1105 /* Assuming TYPE is a simple, non-empty array type, compute its upper
1106 and lower bound. Save the low bound into LOW_BOUND if not NULL.
1107 Save the high bound into HIGH_BOUND if not NULL.
1109 Return 1 if the operation was successful. Return zero otherwise,
1110 in which case the values of LOW_BOUND and HIGH_BOUNDS are unmodified.
1112 We now simply use get_discrete_bounds call to get the values
1113 of the low and high bounds.
1114 get_discrete_bounds can return three values:
1115 1, meaning that index is a range,
1116 0, meaning that index is a discrete type,
1117 or -1 for failure. */
1120 get_array_bounds (struct type
*type
, LONGEST
*low_bound
, LONGEST
*high_bound
)
1122 struct type
*index
= type
->index_type ();
1130 res
= get_discrete_bounds (index
, &low
, &high
);
1134 /* Check if the array bounds are undefined. */
1136 && ((low_bound
&& TYPE_ARRAY_LOWER_BOUND_IS_UNDEFINED (type
))
1137 || (high_bound
&& TYPE_ARRAY_UPPER_BOUND_IS_UNDEFINED (type
))))
1149 /* Assuming that TYPE is a discrete type and VAL is a valid integer
1150 representation of a value of this type, save the corresponding
1151 position number in POS.
1153 Its differs from VAL only in the case of enumeration types. In
1154 this case, the position number of the value of the first listed
1155 enumeration literal is zero; the position number of the value of
1156 each subsequent enumeration literal is one more than that of its
1157 predecessor in the list.
1159 Return 1 if the operation was successful. Return zero otherwise,
1160 in which case the value of POS is unmodified.
1164 discrete_position (struct type
*type
, LONGEST val
, LONGEST
*pos
)
1166 if (type
->code () == TYPE_CODE_RANGE
)
1167 type
= TYPE_TARGET_TYPE (type
);
1169 if (type
->code () == TYPE_CODE_ENUM
)
1173 for (i
= 0; i
< type
->num_fields (); i
+= 1)
1175 if (val
== TYPE_FIELD_ENUMVAL (type
, i
))
1181 /* Invalid enumeration value. */
1191 /* If the array TYPE has static bounds calculate and update its
1192 size, then return true. Otherwise return false and leave TYPE
1196 update_static_array_size (struct type
*type
)
1198 gdb_assert (type
->code () == TYPE_CODE_ARRAY
);
1200 struct type
*range_type
= type
->index_type ();
1202 if (type
->dyn_prop (DYN_PROP_BYTE_STRIDE
) == nullptr
1203 && has_static_range (TYPE_RANGE_DATA (range_type
))
1204 && (!type_not_associated (type
)
1205 && !type_not_allocated (type
)))
1207 LONGEST low_bound
, high_bound
;
1209 struct type
*element_type
;
1211 /* If the array itself doesn't provide a stride value then take
1212 whatever stride the range provides. Don't update BIT_STRIDE as
1213 we don't want to place the stride value from the range into this
1214 arrays bit size field. */
1215 stride
= TYPE_FIELD_BITSIZE (type
, 0);
1217 stride
= TYPE_BIT_STRIDE (range_type
);
1219 if (get_discrete_bounds (range_type
, &low_bound
, &high_bound
) < 0)
1220 low_bound
= high_bound
= 0;
1221 element_type
= check_typedef (TYPE_TARGET_TYPE (type
));
1222 /* Be careful when setting the array length. Ada arrays can be
1223 empty arrays with the high_bound being smaller than the low_bound.
1224 In such cases, the array length should be zero. */
1225 if (high_bound
< low_bound
)
1226 TYPE_LENGTH (type
) = 0;
1227 else if (stride
!= 0)
1229 /* Ensure that the type length is always positive, even in the
1230 case where (for example in Fortran) we have a negative
1231 stride. It is possible to have a single element array with a
1232 negative stride in Fortran (this doesn't mean anything
1233 special, it's still just a single element array) so do
1234 consider that case when touching this code. */
1235 LONGEST element_count
= std::abs (high_bound
- low_bound
+ 1);
1237 = ((std::abs (stride
) * element_count
) + 7) / 8;
1240 TYPE_LENGTH (type
) =
1241 TYPE_LENGTH (element_type
) * (high_bound
- low_bound
+ 1);
1249 /* Create an array type using either a blank type supplied in
1250 RESULT_TYPE, or creating a new type, inheriting the objfile from
1253 Elements will be of type ELEMENT_TYPE, the indices will be of type
1256 BYTE_STRIDE_PROP, when not NULL, provides the array's byte stride.
1257 This byte stride property is added to the resulting array type
1258 as a DYN_PROP_BYTE_STRIDE. As a consequence, the BYTE_STRIDE_PROP
1259 argument can only be used to create types that are objfile-owned
1260 (see add_dyn_prop), meaning that either this function must be called
1261 with an objfile-owned RESULT_TYPE, or an objfile-owned RANGE_TYPE.
1263 BIT_STRIDE is taken into account only when BYTE_STRIDE_PROP is NULL.
1264 If BIT_STRIDE is not zero, build a packed array type whose element
1265 size is BIT_STRIDE. Otherwise, ignore this parameter.
1267 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
1268 sure it is TYPE_CODE_UNDEF before we bash it into an array
1272 create_array_type_with_stride (struct type
*result_type
,
1273 struct type
*element_type
,
1274 struct type
*range_type
,
1275 struct dynamic_prop
*byte_stride_prop
,
1276 unsigned int bit_stride
)
1278 if (byte_stride_prop
!= NULL
1279 && byte_stride_prop
->kind
== PROP_CONST
)
1281 /* The byte stride is actually not dynamic. Pretend we were
1282 called with bit_stride set instead of byte_stride_prop.
1283 This will give us the same result type, while avoiding
1284 the need to handle this as a special case. */
1285 bit_stride
= byte_stride_prop
->data
.const_val
* 8;
1286 byte_stride_prop
= NULL
;
1289 if (result_type
== NULL
)
1290 result_type
= alloc_type_copy (range_type
);
1292 result_type
->set_code (TYPE_CODE_ARRAY
);
1293 TYPE_TARGET_TYPE (result_type
) = element_type
;
1295 result_type
->set_num_fields (1);
1296 result_type
->set_fields
1297 ((struct field
*) TYPE_ZALLOC (result_type
, sizeof (struct field
)));
1298 result_type
->set_index_type (range_type
);
1299 if (byte_stride_prop
!= NULL
)
1300 result_type
->add_dyn_prop (DYN_PROP_BYTE_STRIDE
, *byte_stride_prop
);
1301 else if (bit_stride
> 0)
1302 TYPE_FIELD_BITSIZE (result_type
, 0) = bit_stride
;
1304 if (!update_static_array_size (result_type
))
1306 /* This type is dynamic and its length needs to be computed
1307 on demand. In the meantime, avoid leaving the TYPE_LENGTH
1308 undefined by setting it to zero. Although we are not expected
1309 to trust TYPE_LENGTH in this case, setting the size to zero
1310 allows us to avoid allocating objects of random sizes in case
1311 we accidently do. */
1312 TYPE_LENGTH (result_type
) = 0;
1315 /* TYPE_TARGET_STUB will take care of zero length arrays. */
1316 if (TYPE_LENGTH (result_type
) == 0)
1317 TYPE_TARGET_STUB (result_type
) = 1;
1322 /* Same as create_array_type_with_stride but with no bit_stride
1323 (BIT_STRIDE = 0), thus building an unpacked array. */
1326 create_array_type (struct type
*result_type
,
1327 struct type
*element_type
,
1328 struct type
*range_type
)
1330 return create_array_type_with_stride (result_type
, element_type
,
1331 range_type
, NULL
, 0);
1335 lookup_array_range_type (struct type
*element_type
,
1336 LONGEST low_bound
, LONGEST high_bound
)
1338 struct type
*index_type
;
1339 struct type
*range_type
;
1341 if (TYPE_OBJFILE_OWNED (element_type
))
1342 index_type
= objfile_type (TYPE_OWNER (element_type
).objfile
)->builtin_int
;
1344 index_type
= builtin_type (get_type_arch (element_type
))->builtin_int
;
1345 range_type
= create_static_range_type (NULL
, index_type
,
1346 low_bound
, high_bound
);
1348 return create_array_type (NULL
, element_type
, range_type
);
1351 /* Create a string type using either a blank type supplied in
1352 RESULT_TYPE, or creating a new type. String types are similar
1353 enough to array of char types that we can use create_array_type to
1354 build the basic type and then bash it into a string type.
1356 For fixed length strings, the range type contains 0 as the lower
1357 bound and the length of the string minus one as the upper bound.
1359 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
1360 sure it is TYPE_CODE_UNDEF before we bash it into a string
1364 create_string_type (struct type
*result_type
,
1365 struct type
*string_char_type
,
1366 struct type
*range_type
)
1368 result_type
= create_array_type (result_type
,
1371 result_type
->set_code (TYPE_CODE_STRING
);
1376 lookup_string_range_type (struct type
*string_char_type
,
1377 LONGEST low_bound
, LONGEST high_bound
)
1379 struct type
*result_type
;
1381 result_type
= lookup_array_range_type (string_char_type
,
1382 low_bound
, high_bound
);
1383 result_type
->set_code (TYPE_CODE_STRING
);
1388 create_set_type (struct type
*result_type
, struct type
*domain_type
)
1390 if (result_type
== NULL
)
1391 result_type
= alloc_type_copy (domain_type
);
1393 result_type
->set_code (TYPE_CODE_SET
);
1394 result_type
->set_num_fields (1);
1395 result_type
->set_fields
1396 ((struct field
*) TYPE_ZALLOC (result_type
, sizeof (struct field
)));
1398 if (!TYPE_STUB (domain_type
))
1400 LONGEST low_bound
, high_bound
, bit_length
;
1402 if (get_discrete_bounds (domain_type
, &low_bound
, &high_bound
) < 0)
1403 low_bound
= high_bound
= 0;
1404 bit_length
= high_bound
- low_bound
+ 1;
1405 TYPE_LENGTH (result_type
)
1406 = (bit_length
+ TARGET_CHAR_BIT
- 1) / TARGET_CHAR_BIT
;
1408 TYPE_UNSIGNED (result_type
) = 1;
1410 result_type
->field (0).set_type (domain_type
);
1415 /* Convert ARRAY_TYPE to a vector type. This may modify ARRAY_TYPE
1416 and any array types nested inside it. */
1419 make_vector_type (struct type
*array_type
)
1421 struct type
*inner_array
, *elt_type
;
1424 /* Find the innermost array type, in case the array is
1425 multi-dimensional. */
1426 inner_array
= array_type
;
1427 while (TYPE_TARGET_TYPE (inner_array
)->code () == TYPE_CODE_ARRAY
)
1428 inner_array
= TYPE_TARGET_TYPE (inner_array
);
1430 elt_type
= TYPE_TARGET_TYPE (inner_array
);
1431 if (elt_type
->code () == TYPE_CODE_INT
)
1433 flags
= TYPE_INSTANCE_FLAGS (elt_type
) | TYPE_INSTANCE_FLAG_NOTTEXT
;
1434 elt_type
= make_qualified_type (elt_type
, flags
, NULL
);
1435 TYPE_TARGET_TYPE (inner_array
) = elt_type
;
1438 TYPE_VECTOR (array_type
) = 1;
1442 init_vector_type (struct type
*elt_type
, int n
)
1444 struct type
*array_type
;
1446 array_type
= lookup_array_range_type (elt_type
, 0, n
- 1);
1447 make_vector_type (array_type
);
1451 /* Internal routine called by TYPE_SELF_TYPE to return the type that TYPE
1452 belongs to. In c++ this is the class of "this", but TYPE_THIS_TYPE is too
1453 confusing. "self" is a common enough replacement for "this".
1454 TYPE must be one of TYPE_CODE_METHODPTR, TYPE_CODE_MEMBERPTR, or
1455 TYPE_CODE_METHOD. */
1458 internal_type_self_type (struct type
*type
)
1460 switch (type
->code ())
1462 case TYPE_CODE_METHODPTR
:
1463 case TYPE_CODE_MEMBERPTR
:
1464 if (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_NONE
)
1466 gdb_assert (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_SELF_TYPE
);
1467 return TYPE_MAIN_TYPE (type
)->type_specific
.self_type
;
1468 case TYPE_CODE_METHOD
:
1469 if (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_NONE
)
1471 gdb_assert (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_FUNC
);
1472 return TYPE_MAIN_TYPE (type
)->type_specific
.func_stuff
->self_type
;
1474 gdb_assert_not_reached ("bad type");
1478 /* Set the type of the class that TYPE belongs to.
1479 In c++ this is the class of "this".
1480 TYPE must be one of TYPE_CODE_METHODPTR, TYPE_CODE_MEMBERPTR, or
1481 TYPE_CODE_METHOD. */
1484 set_type_self_type (struct type
*type
, struct type
*self_type
)
1486 switch (type
->code ())
1488 case TYPE_CODE_METHODPTR
:
1489 case TYPE_CODE_MEMBERPTR
:
1490 if (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_NONE
)
1491 TYPE_SPECIFIC_FIELD (type
) = TYPE_SPECIFIC_SELF_TYPE
;
1492 gdb_assert (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_SELF_TYPE
);
1493 TYPE_MAIN_TYPE (type
)->type_specific
.self_type
= self_type
;
1495 case TYPE_CODE_METHOD
:
1496 if (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_NONE
)
1497 INIT_FUNC_SPECIFIC (type
);
1498 gdb_assert (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_FUNC
);
1499 TYPE_MAIN_TYPE (type
)->type_specific
.func_stuff
->self_type
= self_type
;
1502 gdb_assert_not_reached ("bad type");
1506 /* Smash TYPE to be a type of pointers to members of SELF_TYPE with type
1507 TO_TYPE. A member pointer is a wierd thing -- it amounts to a
1508 typed offset into a struct, e.g. "an int at offset 8". A MEMBER
1509 TYPE doesn't include the offset (that's the value of the MEMBER
1510 itself), but does include the structure type into which it points
1513 When "smashing" the type, we preserve the objfile that the old type
1514 pointed to, since we aren't changing where the type is actually
1518 smash_to_memberptr_type (struct type
*type
, struct type
*self_type
,
1519 struct type
*to_type
)
1522 type
->set_code (TYPE_CODE_MEMBERPTR
);
1523 TYPE_TARGET_TYPE (type
) = to_type
;
1524 set_type_self_type (type
, self_type
);
1525 /* Assume that a data member pointer is the same size as a normal
1528 = gdbarch_ptr_bit (get_type_arch (to_type
)) / TARGET_CHAR_BIT
;
1531 /* Smash TYPE to be a type of pointer to methods type TO_TYPE.
1533 When "smashing" the type, we preserve the objfile that the old type
1534 pointed to, since we aren't changing where the type is actually
1538 smash_to_methodptr_type (struct type
*type
, struct type
*to_type
)
1541 type
->set_code (TYPE_CODE_METHODPTR
);
1542 TYPE_TARGET_TYPE (type
) = to_type
;
1543 set_type_self_type (type
, TYPE_SELF_TYPE (to_type
));
1544 TYPE_LENGTH (type
) = cplus_method_ptr_size (to_type
);
1547 /* Smash TYPE to be a type of method of SELF_TYPE with type TO_TYPE.
1548 METHOD just means `function that gets an extra "this" argument'.
1550 When "smashing" the type, we preserve the objfile that the old type
1551 pointed to, since we aren't changing where the type is actually
1555 smash_to_method_type (struct type
*type
, struct type
*self_type
,
1556 struct type
*to_type
, struct field
*args
,
1557 int nargs
, int varargs
)
1560 type
->set_code (TYPE_CODE_METHOD
);
1561 TYPE_TARGET_TYPE (type
) = to_type
;
1562 set_type_self_type (type
, self_type
);
1563 type
->set_fields (args
);
1564 type
->set_num_fields (nargs
);
1566 TYPE_VARARGS (type
) = 1;
1567 TYPE_LENGTH (type
) = 1; /* In practice, this is never needed. */
1570 /* A wrapper of TYPE_NAME which calls error if the type is anonymous.
1571 Since GCC PR debug/47510 DWARF provides associated information to detect the
1572 anonymous class linkage name from its typedef.
1574 Parameter TYPE should not yet have CHECK_TYPEDEF applied, this function will
1578 type_name_or_error (struct type
*type
)
1580 struct type
*saved_type
= type
;
1582 struct objfile
*objfile
;
1584 type
= check_typedef (type
);
1586 name
= type
->name ();
1590 name
= saved_type
->name ();
1591 objfile
= TYPE_OBJFILE (saved_type
);
1592 error (_("Invalid anonymous type %s [in module %s], GCC PR debug/47510 bug?"),
1593 name
? name
: "<anonymous>",
1594 objfile
? objfile_name (objfile
) : "<arch>");
1597 /* Lookup a typedef or primitive type named NAME, visible in lexical
1598 block BLOCK. If NOERR is nonzero, return zero if NAME is not
1599 suitably defined. */
1602 lookup_typename (const struct language_defn
*language
,
1604 const struct block
*block
, int noerr
)
1608 sym
= lookup_symbol_in_language (name
, block
, VAR_DOMAIN
,
1609 language
->la_language
, NULL
).symbol
;
1610 if (sym
!= NULL
&& SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
1611 return SYMBOL_TYPE (sym
);
1615 error (_("No type named %s."), name
);
1619 lookup_unsigned_typename (const struct language_defn
*language
,
1622 char *uns
= (char *) alloca (strlen (name
) + 10);
1624 strcpy (uns
, "unsigned ");
1625 strcpy (uns
+ 9, name
);
1626 return lookup_typename (language
, uns
, NULL
, 0);
1630 lookup_signed_typename (const struct language_defn
*language
, const char *name
)
1633 char *uns
= (char *) alloca (strlen (name
) + 8);
1635 strcpy (uns
, "signed ");
1636 strcpy (uns
+ 7, name
);
1637 t
= lookup_typename (language
, uns
, NULL
, 1);
1638 /* If we don't find "signed FOO" just try again with plain "FOO". */
1641 return lookup_typename (language
, name
, NULL
, 0);
1644 /* Lookup a structure type named "struct NAME",
1645 visible in lexical block BLOCK. */
1648 lookup_struct (const char *name
, const struct block
*block
)
1652 sym
= lookup_symbol (name
, block
, STRUCT_DOMAIN
, 0).symbol
;
1656 error (_("No struct type named %s."), name
);
1658 if (SYMBOL_TYPE (sym
)->code () != TYPE_CODE_STRUCT
)
1660 error (_("This context has class, union or enum %s, not a struct."),
1663 return (SYMBOL_TYPE (sym
));
1666 /* Lookup a union type named "union NAME",
1667 visible in lexical block BLOCK. */
1670 lookup_union (const char *name
, const struct block
*block
)
1675 sym
= lookup_symbol (name
, block
, STRUCT_DOMAIN
, 0).symbol
;
1678 error (_("No union type named %s."), name
);
1680 t
= SYMBOL_TYPE (sym
);
1682 if (t
->code () == TYPE_CODE_UNION
)
1685 /* If we get here, it's not a union. */
1686 error (_("This context has class, struct or enum %s, not a union."),
1690 /* Lookup an enum type named "enum NAME",
1691 visible in lexical block BLOCK. */
1694 lookup_enum (const char *name
, const struct block
*block
)
1698 sym
= lookup_symbol (name
, block
, STRUCT_DOMAIN
, 0).symbol
;
1701 error (_("No enum type named %s."), name
);
1703 if (SYMBOL_TYPE (sym
)->code () != TYPE_CODE_ENUM
)
1705 error (_("This context has class, struct or union %s, not an enum."),
1708 return (SYMBOL_TYPE (sym
));
1711 /* Lookup a template type named "template NAME<TYPE>",
1712 visible in lexical block BLOCK. */
1715 lookup_template_type (const char *name
, struct type
*type
,
1716 const struct block
*block
)
1719 char *nam
= (char *)
1720 alloca (strlen (name
) + strlen (type
->name ()) + 4);
1724 strcat (nam
, type
->name ());
1725 strcat (nam
, " >"); /* FIXME, extra space still introduced in gcc? */
1727 sym
= lookup_symbol (nam
, block
, VAR_DOMAIN
, 0).symbol
;
1731 error (_("No template type named %s."), name
);
1733 if (SYMBOL_TYPE (sym
)->code () != TYPE_CODE_STRUCT
)
1735 error (_("This context has class, union or enum %s, not a struct."),
1738 return (SYMBOL_TYPE (sym
));
1741 /* See gdbtypes.h. */
1744 lookup_struct_elt (struct type
*type
, const char *name
, int noerr
)
1750 type
= check_typedef (type
);
1751 if (type
->code () != TYPE_CODE_PTR
1752 && type
->code () != TYPE_CODE_REF
)
1754 type
= TYPE_TARGET_TYPE (type
);
1757 if (type
->code () != TYPE_CODE_STRUCT
1758 && type
->code () != TYPE_CODE_UNION
)
1760 std::string type_name
= type_to_string (type
);
1761 error (_("Type %s is not a structure or union type."),
1762 type_name
.c_str ());
1765 for (i
= type
->num_fields () - 1; i
>= TYPE_N_BASECLASSES (type
); i
--)
1767 const char *t_field_name
= TYPE_FIELD_NAME (type
, i
);
1769 if (t_field_name
&& (strcmp_iw (t_field_name
, name
) == 0))
1771 return {&type
->field (i
), TYPE_FIELD_BITPOS (type
, i
)};
1773 else if (!t_field_name
|| *t_field_name
== '\0')
1776 = lookup_struct_elt (type
->field (i
).type (), name
, 1);
1777 if (elt
.field
!= NULL
)
1779 elt
.offset
+= TYPE_FIELD_BITPOS (type
, i
);
1785 /* OK, it's not in this class. Recursively check the baseclasses. */
1786 for (i
= TYPE_N_BASECLASSES (type
) - 1; i
>= 0; i
--)
1788 struct_elt elt
= lookup_struct_elt (TYPE_BASECLASS (type
, i
), name
, 1);
1789 if (elt
.field
!= NULL
)
1794 return {nullptr, 0};
1796 std::string type_name
= type_to_string (type
);
1797 error (_("Type %s has no component named %s."), type_name
.c_str (), name
);
1800 /* See gdbtypes.h. */
1803 lookup_struct_elt_type (struct type
*type
, const char *name
, int noerr
)
1805 struct_elt elt
= lookup_struct_elt (type
, name
, noerr
);
1806 if (elt
.field
!= NULL
)
1807 return elt
.field
->type ();
1812 /* Store in *MAX the largest number representable by unsigned integer type
1816 get_unsigned_type_max (struct type
*type
, ULONGEST
*max
)
1820 type
= check_typedef (type
);
1821 gdb_assert (type
->code () == TYPE_CODE_INT
&& TYPE_UNSIGNED (type
));
1822 gdb_assert (TYPE_LENGTH (type
) <= sizeof (ULONGEST
));
1824 /* Written this way to avoid overflow. */
1825 n
= TYPE_LENGTH (type
) * TARGET_CHAR_BIT
;
1826 *max
= ((((ULONGEST
) 1 << (n
- 1)) - 1) << 1) | 1;
1829 /* Store in *MIN, *MAX the smallest and largest numbers representable by
1830 signed integer type TYPE. */
1833 get_signed_type_minmax (struct type
*type
, LONGEST
*min
, LONGEST
*max
)
1837 type
= check_typedef (type
);
1838 gdb_assert (type
->code () == TYPE_CODE_INT
&& !TYPE_UNSIGNED (type
));
1839 gdb_assert (TYPE_LENGTH (type
) <= sizeof (LONGEST
));
1841 n
= TYPE_LENGTH (type
) * TARGET_CHAR_BIT
;
1842 *min
= -((ULONGEST
) 1 << (n
- 1));
1843 *max
= ((ULONGEST
) 1 << (n
- 1)) - 1;
1846 /* Internal routine called by TYPE_VPTR_FIELDNO to return the value of
1847 cplus_stuff.vptr_fieldno.
1849 cplus_stuff is initialized to cplus_struct_default which does not
1850 set vptr_fieldno to -1 for portability reasons (IWBN to use C99
1851 designated initializers). We cope with that here. */
1854 internal_type_vptr_fieldno (struct type
*type
)
1856 type
= check_typedef (type
);
1857 gdb_assert (type
->code () == TYPE_CODE_STRUCT
1858 || type
->code () == TYPE_CODE_UNION
);
1859 if (!HAVE_CPLUS_STRUCT (type
))
1861 return TYPE_RAW_CPLUS_SPECIFIC (type
)->vptr_fieldno
;
1864 /* Set the value of cplus_stuff.vptr_fieldno. */
1867 set_type_vptr_fieldno (struct type
*type
, int fieldno
)
1869 type
= check_typedef (type
);
1870 gdb_assert (type
->code () == TYPE_CODE_STRUCT
1871 || type
->code () == TYPE_CODE_UNION
);
1872 if (!HAVE_CPLUS_STRUCT (type
))
1873 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
1874 TYPE_RAW_CPLUS_SPECIFIC (type
)->vptr_fieldno
= fieldno
;
1877 /* Internal routine called by TYPE_VPTR_BASETYPE to return the value of
1878 cplus_stuff.vptr_basetype. */
1881 internal_type_vptr_basetype (struct type
*type
)
1883 type
= check_typedef (type
);
1884 gdb_assert (type
->code () == TYPE_CODE_STRUCT
1885 || type
->code () == TYPE_CODE_UNION
);
1886 gdb_assert (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_CPLUS_STUFF
);
1887 return TYPE_RAW_CPLUS_SPECIFIC (type
)->vptr_basetype
;
1890 /* Set the value of cplus_stuff.vptr_basetype. */
1893 set_type_vptr_basetype (struct type
*type
, struct type
*basetype
)
1895 type
= check_typedef (type
);
1896 gdb_assert (type
->code () == TYPE_CODE_STRUCT
1897 || type
->code () == TYPE_CODE_UNION
);
1898 if (!HAVE_CPLUS_STRUCT (type
))
1899 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
1900 TYPE_RAW_CPLUS_SPECIFIC (type
)->vptr_basetype
= basetype
;
1903 /* Lookup the vptr basetype/fieldno values for TYPE.
1904 If found store vptr_basetype in *BASETYPEP if non-NULL, and return
1905 vptr_fieldno. Also, if found and basetype is from the same objfile,
1907 If not found, return -1 and ignore BASETYPEP.
1908 Callers should be aware that in some cases (for example,
1909 the type or one of its baseclasses is a stub type and we are
1910 debugging a .o file, or the compiler uses DWARF-2 and is not GCC),
1911 this function will not be able to find the
1912 virtual function table pointer, and vptr_fieldno will remain -1 and
1913 vptr_basetype will remain NULL or incomplete. */
1916 get_vptr_fieldno (struct type
*type
, struct type
**basetypep
)
1918 type
= check_typedef (type
);
1920 if (TYPE_VPTR_FIELDNO (type
) < 0)
1924 /* We must start at zero in case the first (and only) baseclass
1925 is virtual (and hence we cannot share the table pointer). */
1926 for (i
= 0; i
< TYPE_N_BASECLASSES (type
); i
++)
1928 struct type
*baseclass
= check_typedef (TYPE_BASECLASS (type
, i
));
1930 struct type
*basetype
;
1932 fieldno
= get_vptr_fieldno (baseclass
, &basetype
);
1935 /* If the type comes from a different objfile we can't cache
1936 it, it may have a different lifetime. PR 2384 */
1937 if (TYPE_OBJFILE (type
) == TYPE_OBJFILE (basetype
))
1939 set_type_vptr_fieldno (type
, fieldno
);
1940 set_type_vptr_basetype (type
, basetype
);
1943 *basetypep
= basetype
;
1954 *basetypep
= TYPE_VPTR_BASETYPE (type
);
1955 return TYPE_VPTR_FIELDNO (type
);
1960 stub_noname_complaint (void)
1962 complaint (_("stub type has NULL name"));
1965 /* Return nonzero if TYPE has a DYN_PROP_BYTE_STRIDE dynamic property
1966 attached to it, and that property has a non-constant value. */
1969 array_type_has_dynamic_stride (struct type
*type
)
1971 struct dynamic_prop
*prop
= type
->dyn_prop (DYN_PROP_BYTE_STRIDE
);
1973 return (prop
!= NULL
&& prop
->kind
!= PROP_CONST
);
1976 /* Worker for is_dynamic_type. */
1979 is_dynamic_type_internal (struct type
*type
, int top_level
)
1981 type
= check_typedef (type
);
1983 /* We only want to recognize references at the outermost level. */
1984 if (top_level
&& type
->code () == TYPE_CODE_REF
)
1985 type
= check_typedef (TYPE_TARGET_TYPE (type
));
1987 /* Types that have a dynamic TYPE_DATA_LOCATION are considered
1988 dynamic, even if the type itself is statically defined.
1989 From a user's point of view, this may appear counter-intuitive;
1990 but it makes sense in this context, because the point is to determine
1991 whether any part of the type needs to be resolved before it can
1993 if (TYPE_DATA_LOCATION (type
) != NULL
1994 && (TYPE_DATA_LOCATION_KIND (type
) == PROP_LOCEXPR
1995 || TYPE_DATA_LOCATION_KIND (type
) == PROP_LOCLIST
))
1998 if (TYPE_ASSOCIATED_PROP (type
))
2001 if (TYPE_ALLOCATED_PROP (type
))
2004 struct dynamic_prop
*prop
= type
->dyn_prop (DYN_PROP_VARIANT_PARTS
);
2005 if (prop
!= nullptr && prop
->kind
!= PROP_TYPE
)
2008 if (TYPE_HAS_DYNAMIC_LENGTH (type
))
2011 switch (type
->code ())
2013 case TYPE_CODE_RANGE
:
2015 /* A range type is obviously dynamic if it has at least one
2016 dynamic bound. But also consider the range type to be
2017 dynamic when its subtype is dynamic, even if the bounds
2018 of the range type are static. It allows us to assume that
2019 the subtype of a static range type is also static. */
2020 return (!has_static_range (TYPE_RANGE_DATA (type
))
2021 || is_dynamic_type_internal (TYPE_TARGET_TYPE (type
), 0));
2024 case TYPE_CODE_STRING
:
2025 /* Strings are very much like an array of characters, and can be
2026 treated as one here. */
2027 case TYPE_CODE_ARRAY
:
2029 gdb_assert (type
->num_fields () == 1);
2031 /* The array is dynamic if either the bounds are dynamic... */
2032 if (is_dynamic_type_internal (type
->index_type (), 0))
2034 /* ... or the elements it contains have a dynamic contents... */
2035 if (is_dynamic_type_internal (TYPE_TARGET_TYPE (type
), 0))
2037 /* ... or if it has a dynamic stride... */
2038 if (array_type_has_dynamic_stride (type
))
2043 case TYPE_CODE_STRUCT
:
2044 case TYPE_CODE_UNION
:
2048 bool is_cplus
= HAVE_CPLUS_STRUCT (type
);
2050 for (i
= 0; i
< type
->num_fields (); ++i
)
2052 /* Static fields can be ignored here. */
2053 if (field_is_static (&type
->field (i
)))
2055 /* If the field has dynamic type, then so does TYPE. */
2056 if (is_dynamic_type_internal (type
->field (i
).type (), 0))
2058 /* If the field is at a fixed offset, then it is not
2060 if (TYPE_FIELD_LOC_KIND (type
, i
) != FIELD_LOC_KIND_DWARF_BLOCK
)
2062 /* Do not consider C++ virtual base types to be dynamic
2063 due to the field's offset being dynamic; these are
2064 handled via other means. */
2065 if (is_cplus
&& BASETYPE_VIA_VIRTUAL (type
, i
))
2076 /* See gdbtypes.h. */
2079 is_dynamic_type (struct type
*type
)
2081 return is_dynamic_type_internal (type
, 1);
2084 static struct type
*resolve_dynamic_type_internal
2085 (struct type
*type
, struct property_addr_info
*addr_stack
, int top_level
);
2087 /* Given a dynamic range type (dyn_range_type) and a stack of
2088 struct property_addr_info elements, return a static version
2091 static struct type
*
2092 resolve_dynamic_range (struct type
*dyn_range_type
,
2093 struct property_addr_info
*addr_stack
)
2096 struct type
*static_range_type
, *static_target_type
;
2097 const struct dynamic_prop
*prop
;
2098 struct dynamic_prop low_bound
, high_bound
, stride
;
2100 gdb_assert (dyn_range_type
->code () == TYPE_CODE_RANGE
);
2102 prop
= &TYPE_RANGE_DATA (dyn_range_type
)->low
;
2103 if (dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2105 low_bound
.kind
= PROP_CONST
;
2106 low_bound
.data
.const_val
= value
;
2110 low_bound
.kind
= PROP_UNDEFINED
;
2111 low_bound
.data
.const_val
= 0;
2114 prop
= &TYPE_RANGE_DATA (dyn_range_type
)->high
;
2115 if (dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2117 high_bound
.kind
= PROP_CONST
;
2118 high_bound
.data
.const_val
= value
;
2120 if (TYPE_RANGE_DATA (dyn_range_type
)->flag_upper_bound_is_count
)
2121 high_bound
.data
.const_val
2122 = low_bound
.data
.const_val
+ high_bound
.data
.const_val
- 1;
2126 high_bound
.kind
= PROP_UNDEFINED
;
2127 high_bound
.data
.const_val
= 0;
2130 bool byte_stride_p
= TYPE_RANGE_DATA (dyn_range_type
)->flag_is_byte_stride
;
2131 prop
= &TYPE_RANGE_DATA (dyn_range_type
)->stride
;
2132 if (dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2134 stride
.kind
= PROP_CONST
;
2135 stride
.data
.const_val
= value
;
2137 /* If we have a bit stride that is not an exact number of bytes then
2138 I really don't think this is going to work with current GDB, the
2139 array indexing code in GDB seems to be pretty heavily tied to byte
2140 offsets right now. Assuming 8 bits in a byte. */
2141 struct gdbarch
*gdbarch
= get_type_arch (dyn_range_type
);
2142 int unit_size
= gdbarch_addressable_memory_unit_size (gdbarch
);
2143 if (!byte_stride_p
&& (value
% (unit_size
* 8)) != 0)
2144 error (_("bit strides that are not a multiple of the byte size "
2145 "are currently not supported"));
2149 stride
.kind
= PROP_UNDEFINED
;
2150 stride
.data
.const_val
= 0;
2151 byte_stride_p
= true;
2155 = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (dyn_range_type
),
2157 LONGEST bias
= TYPE_RANGE_DATA (dyn_range_type
)->bias
;
2158 static_range_type
= create_range_type_with_stride
2159 (copy_type (dyn_range_type
), static_target_type
,
2160 &low_bound
, &high_bound
, bias
, &stride
, byte_stride_p
);
2161 TYPE_RANGE_DATA (static_range_type
)->flag_bound_evaluated
= 1;
2162 return static_range_type
;
2165 /* Resolves dynamic bound values of an array or string type TYPE to static
2166 ones. ADDR_STACK is a stack of struct property_addr_info to be used if
2167 needed during the dynamic resolution. */
2169 static struct type
*
2170 resolve_dynamic_array_or_string (struct type
*type
,
2171 struct property_addr_info
*addr_stack
)
2174 struct type
*elt_type
;
2175 struct type
*range_type
;
2176 struct type
*ary_dim
;
2177 struct dynamic_prop
*prop
;
2178 unsigned int bit_stride
= 0;
2180 /* For dynamic type resolution strings can be treated like arrays of
2182 gdb_assert (type
->code () == TYPE_CODE_ARRAY
2183 || type
->code () == TYPE_CODE_STRING
);
2185 type
= copy_type (type
);
2188 range_type
= check_typedef (elt_type
->index_type ());
2189 range_type
= resolve_dynamic_range (range_type
, addr_stack
);
2191 /* Resolve allocated/associated here before creating a new array type, which
2192 will update the length of the array accordingly. */
2193 prop
= TYPE_ALLOCATED_PROP (type
);
2194 if (prop
!= NULL
&& dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2196 TYPE_DYN_PROP_ADDR (prop
) = value
;
2197 TYPE_DYN_PROP_KIND (prop
) = PROP_CONST
;
2199 prop
= TYPE_ASSOCIATED_PROP (type
);
2200 if (prop
!= NULL
&& dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2202 TYPE_DYN_PROP_ADDR (prop
) = value
;
2203 TYPE_DYN_PROP_KIND (prop
) = PROP_CONST
;
2206 ary_dim
= check_typedef (TYPE_TARGET_TYPE (elt_type
));
2208 if (ary_dim
!= NULL
&& ary_dim
->code () == TYPE_CODE_ARRAY
)
2209 elt_type
= resolve_dynamic_array_or_string (ary_dim
, addr_stack
);
2211 elt_type
= TYPE_TARGET_TYPE (type
);
2213 prop
= type
->dyn_prop (DYN_PROP_BYTE_STRIDE
);
2216 if (dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2218 type
->remove_dyn_prop (DYN_PROP_BYTE_STRIDE
);
2219 bit_stride
= (unsigned int) (value
* 8);
2223 /* Could be a bug in our code, but it could also happen
2224 if the DWARF info is not correct. Issue a warning,
2225 and assume no byte/bit stride (leave bit_stride = 0). */
2226 warning (_("cannot determine array stride for type %s"),
2227 type
->name () ? type
->name () : "<no name>");
2231 bit_stride
= TYPE_FIELD_BITSIZE (type
, 0);
2233 return create_array_type_with_stride (type
, elt_type
, range_type
, NULL
,
2237 /* Resolve dynamic bounds of members of the union TYPE to static
2238 bounds. ADDR_STACK is a stack of struct property_addr_info
2239 to be used if needed during the dynamic resolution. */
2241 static struct type
*
2242 resolve_dynamic_union (struct type
*type
,
2243 struct property_addr_info
*addr_stack
)
2245 struct type
*resolved_type
;
2247 unsigned int max_len
= 0;
2249 gdb_assert (type
->code () == TYPE_CODE_UNION
);
2251 resolved_type
= copy_type (type
);
2252 resolved_type
->set_fields
2254 TYPE_ALLOC (resolved_type
,
2255 resolved_type
->num_fields () * sizeof (struct field
)));
2256 memcpy (resolved_type
->fields (),
2258 resolved_type
->num_fields () * sizeof (struct field
));
2259 for (i
= 0; i
< resolved_type
->num_fields (); ++i
)
2263 if (field_is_static (&type
->field (i
)))
2266 t
= resolve_dynamic_type_internal (resolved_type
->field (i
).type (),
2268 resolved_type
->field (i
).set_type (t
);
2270 struct type
*real_type
= check_typedef (t
);
2271 if (TYPE_LENGTH (real_type
) > max_len
)
2272 max_len
= TYPE_LENGTH (real_type
);
2275 TYPE_LENGTH (resolved_type
) = max_len
;
2276 return resolved_type
;
2279 /* See gdbtypes.h. */
2282 variant::matches (ULONGEST value
, bool is_unsigned
) const
2284 for (const discriminant_range
&range
: discriminants
)
2285 if (range
.contains (value
, is_unsigned
))
2291 compute_variant_fields_inner (struct type
*type
,
2292 struct property_addr_info
*addr_stack
,
2293 const variant_part
&part
,
2294 std::vector
<bool> &flags
);
2296 /* A helper function to determine which variant fields will be active.
2297 This handles both the variant's direct fields, and any variant
2298 parts embedded in this variant. TYPE is the type we're examining.
2299 ADDR_STACK holds information about the concrete object. VARIANT is
2300 the current variant to be handled. FLAGS is where the results are
2301 stored -- this function sets the Nth element in FLAGS if the
2302 corresponding field is enabled. ENABLED is whether this variant is
2306 compute_variant_fields_recurse (struct type
*type
,
2307 struct property_addr_info
*addr_stack
,
2308 const variant
&variant
,
2309 std::vector
<bool> &flags
,
2312 for (int field
= variant
.first_field
; field
< variant
.last_field
; ++field
)
2313 flags
[field
] = enabled
;
2315 for (const variant_part
&new_part
: variant
.parts
)
2318 compute_variant_fields_inner (type
, addr_stack
, new_part
, flags
);
2321 for (const auto &sub_variant
: new_part
.variants
)
2322 compute_variant_fields_recurse (type
, addr_stack
, sub_variant
,
2328 /* A helper function to determine which variant fields will be active.
2329 This evaluates the discriminant, decides which variant (if any) is
2330 active, and then updates FLAGS to reflect which fields should be
2331 available. TYPE is the type we're examining. ADDR_STACK holds
2332 information about the concrete object. VARIANT is the current
2333 variant to be handled. FLAGS is where the results are stored --
2334 this function sets the Nth element in FLAGS if the corresponding
2335 field is enabled. */
2338 compute_variant_fields_inner (struct type
*type
,
2339 struct property_addr_info
*addr_stack
,
2340 const variant_part
&part
,
2341 std::vector
<bool> &flags
)
2343 /* Evaluate the discriminant. */
2344 gdb::optional
<ULONGEST
> discr_value
;
2345 if (part
.discriminant_index
!= -1)
2347 int idx
= part
.discriminant_index
;
2349 if (TYPE_FIELD_LOC_KIND (type
, idx
) != FIELD_LOC_KIND_BITPOS
)
2350 error (_("Cannot determine struct field location"
2351 " (invalid location kind)"));
2353 if (addr_stack
->valaddr
.data () != NULL
)
2354 discr_value
= unpack_field_as_long (type
, addr_stack
->valaddr
.data (),
2358 CORE_ADDR addr
= (addr_stack
->addr
2359 + (TYPE_FIELD_BITPOS (type
, idx
)
2360 / TARGET_CHAR_BIT
));
2362 LONGEST bitsize
= TYPE_FIELD_BITSIZE (type
, idx
);
2363 LONGEST size
= bitsize
/ 8;
2365 size
= TYPE_LENGTH (type
->field (idx
).type ());
2367 gdb_byte bits
[sizeof (ULONGEST
)];
2368 read_memory (addr
, bits
, size
);
2370 LONGEST bitpos
= (TYPE_FIELD_BITPOS (type
, idx
)
2373 discr_value
= unpack_bits_as_long (type
->field (idx
).type (),
2374 bits
, bitpos
, bitsize
);
2378 /* Go through each variant and see which applies. */
2379 const variant
*default_variant
= nullptr;
2380 const variant
*applied_variant
= nullptr;
2381 for (const auto &variant
: part
.variants
)
2383 if (variant
.is_default ())
2384 default_variant
= &variant
;
2385 else if (discr_value
.has_value ()
2386 && variant
.matches (*discr_value
, part
.is_unsigned
))
2388 applied_variant
= &variant
;
2392 if (applied_variant
== nullptr)
2393 applied_variant
= default_variant
;
2395 for (const auto &variant
: part
.variants
)
2396 compute_variant_fields_recurse (type
, addr_stack
, variant
,
2397 flags
, applied_variant
== &variant
);
2400 /* Determine which variant fields are available in TYPE. The enabled
2401 fields are stored in RESOLVED_TYPE. ADDR_STACK holds information
2402 about the concrete object. PARTS describes the top-level variant
2403 parts for this type. */
2406 compute_variant_fields (struct type
*type
,
2407 struct type
*resolved_type
,
2408 struct property_addr_info
*addr_stack
,
2409 const gdb::array_view
<variant_part
> &parts
)
2411 /* Assume all fields are included by default. */
2412 std::vector
<bool> flags (resolved_type
->num_fields (), true);
2414 /* Now disable fields based on the variants that control them. */
2415 for (const auto &part
: parts
)
2416 compute_variant_fields_inner (type
, addr_stack
, part
, flags
);
2418 resolved_type
->set_num_fields
2419 (std::count (flags
.begin (), flags
.end (), true));
2420 resolved_type
->set_fields
2422 TYPE_ALLOC (resolved_type
,
2423 resolved_type
->num_fields () * sizeof (struct field
)));
2426 for (int i
= 0; i
< type
->num_fields (); ++i
)
2431 resolved_type
->field (out
) = type
->field (i
);
2436 /* Resolve dynamic bounds of members of the struct TYPE to static
2437 bounds. ADDR_STACK is a stack of struct property_addr_info to
2438 be used if needed during the dynamic resolution. */
2440 static struct type
*
2441 resolve_dynamic_struct (struct type
*type
,
2442 struct property_addr_info
*addr_stack
)
2444 struct type
*resolved_type
;
2446 unsigned resolved_type_bit_length
= 0;
2448 gdb_assert (type
->code () == TYPE_CODE_STRUCT
);
2449 gdb_assert (type
->num_fields () > 0);
2451 resolved_type
= copy_type (type
);
2453 dynamic_prop
*variant_prop
= resolved_type
->dyn_prop (DYN_PROP_VARIANT_PARTS
);
2454 if (variant_prop
!= nullptr && variant_prop
->kind
== PROP_VARIANT_PARTS
)
2456 compute_variant_fields (type
, resolved_type
, addr_stack
,
2457 *variant_prop
->data
.variant_parts
);
2458 /* We want to leave the property attached, so that the Rust code
2459 can tell whether the type was originally an enum. */
2460 variant_prop
->kind
= PROP_TYPE
;
2461 variant_prop
->data
.original_type
= type
;
2465 resolved_type
->set_fields
2467 TYPE_ALLOC (resolved_type
,
2468 resolved_type
->num_fields () * sizeof (struct field
)));
2469 memcpy (resolved_type
->fields (),
2471 resolved_type
->num_fields () * sizeof (struct field
));
2474 for (i
= 0; i
< resolved_type
->num_fields (); ++i
)
2476 unsigned new_bit_length
;
2477 struct property_addr_info pinfo
;
2479 if (field_is_static (&resolved_type
->field (i
)))
2482 if (TYPE_FIELD_LOC_KIND (resolved_type
, i
) == FIELD_LOC_KIND_DWARF_BLOCK
)
2484 struct dwarf2_property_baton baton
;
2486 = lookup_pointer_type (resolved_type
->field (i
).type ());
2487 baton
.locexpr
= *TYPE_FIELD_DWARF_BLOCK (resolved_type
, i
);
2489 struct dynamic_prop prop
;
2490 prop
.kind
= PROP_LOCEXPR
;
2491 prop
.data
.baton
= &baton
;
2494 if (dwarf2_evaluate_property (&prop
, nullptr, addr_stack
, &addr
,
2496 SET_FIELD_BITPOS (resolved_type
->field (i
),
2497 TARGET_CHAR_BIT
* (addr
- addr_stack
->addr
));
2500 /* As we know this field is not a static field, the field's
2501 field_loc_kind should be FIELD_LOC_KIND_BITPOS. Verify
2502 this is the case, but only trigger a simple error rather
2503 than an internal error if that fails. While failing
2504 that verification indicates a bug in our code, the error
2505 is not severe enough to suggest to the user he stops
2506 his debugging session because of it. */
2507 if (TYPE_FIELD_LOC_KIND (resolved_type
, i
) != FIELD_LOC_KIND_BITPOS
)
2508 error (_("Cannot determine struct field location"
2509 " (invalid location kind)"));
2511 pinfo
.type
= check_typedef (resolved_type
->field (i
).type ());
2512 pinfo
.valaddr
= addr_stack
->valaddr
;
2515 + (TYPE_FIELD_BITPOS (resolved_type
, i
) / TARGET_CHAR_BIT
));
2516 pinfo
.next
= addr_stack
;
2518 resolved_type
->field (i
).set_type
2519 (resolve_dynamic_type_internal (resolved_type
->field (i
).type (),
2521 gdb_assert (TYPE_FIELD_LOC_KIND (resolved_type
, i
)
2522 == FIELD_LOC_KIND_BITPOS
);
2524 new_bit_length
= TYPE_FIELD_BITPOS (resolved_type
, i
);
2525 if (TYPE_FIELD_BITSIZE (resolved_type
, i
) != 0)
2526 new_bit_length
+= TYPE_FIELD_BITSIZE (resolved_type
, i
);
2529 struct type
*real_type
2530 = check_typedef (resolved_type
->field (i
).type ());
2532 new_bit_length
+= (TYPE_LENGTH (real_type
) * TARGET_CHAR_BIT
);
2535 /* Normally, we would use the position and size of the last field
2536 to determine the size of the enclosing structure. But GCC seems
2537 to be encoding the position of some fields incorrectly when
2538 the struct contains a dynamic field that is not placed last.
2539 So we compute the struct size based on the field that has
2540 the highest position + size - probably the best we can do. */
2541 if (new_bit_length
> resolved_type_bit_length
)
2542 resolved_type_bit_length
= new_bit_length
;
2545 /* The length of a type won't change for fortran, but it does for C and Ada.
2546 For fortran the size of dynamic fields might change over time but not the
2547 type length of the structure. If we adapt it, we run into problems
2548 when calculating the element offset for arrays of structs. */
2549 if (current_language
->la_language
!= language_fortran
)
2550 TYPE_LENGTH (resolved_type
)
2551 = (resolved_type_bit_length
+ TARGET_CHAR_BIT
- 1) / TARGET_CHAR_BIT
;
2553 /* The Ada language uses this field as a cache for static fixed types: reset
2554 it as RESOLVED_TYPE must have its own static fixed type. */
2555 TYPE_TARGET_TYPE (resolved_type
) = NULL
;
2557 return resolved_type
;
2560 /* Worker for resolved_dynamic_type. */
2562 static struct type
*
2563 resolve_dynamic_type_internal (struct type
*type
,
2564 struct property_addr_info
*addr_stack
,
2567 struct type
*real_type
= check_typedef (type
);
2568 struct type
*resolved_type
= nullptr;
2569 struct dynamic_prop
*prop
;
2572 if (!is_dynamic_type_internal (real_type
, top_level
))
2575 gdb::optional
<CORE_ADDR
> type_length
;
2576 prop
= TYPE_DYNAMIC_LENGTH (type
);
2578 && dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2579 type_length
= value
;
2581 if (type
->code () == TYPE_CODE_TYPEDEF
)
2583 resolved_type
= copy_type (type
);
2584 TYPE_TARGET_TYPE (resolved_type
)
2585 = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (type
), addr_stack
,
2590 /* Before trying to resolve TYPE, make sure it is not a stub. */
2593 switch (type
->code ())
2597 struct property_addr_info pinfo
;
2599 pinfo
.type
= check_typedef (TYPE_TARGET_TYPE (type
));
2601 if (addr_stack
->valaddr
.data () != NULL
)
2602 pinfo
.addr
= extract_typed_address (addr_stack
->valaddr
.data (),
2605 pinfo
.addr
= read_memory_typed_address (addr_stack
->addr
, type
);
2606 pinfo
.next
= addr_stack
;
2608 resolved_type
= copy_type (type
);
2609 TYPE_TARGET_TYPE (resolved_type
)
2610 = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (type
),
2615 case TYPE_CODE_STRING
:
2616 /* Strings are very much like an array of characters, and can be
2617 treated as one here. */
2618 case TYPE_CODE_ARRAY
:
2619 resolved_type
= resolve_dynamic_array_or_string (type
, addr_stack
);
2622 case TYPE_CODE_RANGE
:
2623 resolved_type
= resolve_dynamic_range (type
, addr_stack
);
2626 case TYPE_CODE_UNION
:
2627 resolved_type
= resolve_dynamic_union (type
, addr_stack
);
2630 case TYPE_CODE_STRUCT
:
2631 resolved_type
= resolve_dynamic_struct (type
, addr_stack
);
2636 if (resolved_type
== nullptr)
2639 if (type_length
.has_value ())
2641 TYPE_LENGTH (resolved_type
) = *type_length
;
2642 resolved_type
->remove_dyn_prop (DYN_PROP_BYTE_SIZE
);
2645 /* Resolve data_location attribute. */
2646 prop
= TYPE_DATA_LOCATION (resolved_type
);
2648 && dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2650 TYPE_DYN_PROP_ADDR (prop
) = value
;
2651 TYPE_DYN_PROP_KIND (prop
) = PROP_CONST
;
2654 return resolved_type
;
2657 /* See gdbtypes.h */
2660 resolve_dynamic_type (struct type
*type
,
2661 gdb::array_view
<const gdb_byte
> valaddr
,
2664 struct property_addr_info pinfo
2665 = {check_typedef (type
), valaddr
, addr
, NULL
};
2667 return resolve_dynamic_type_internal (type
, &pinfo
, 1);
2670 /* See gdbtypes.h */
2673 type::dyn_prop (dynamic_prop_node_kind prop_kind
) const
2675 dynamic_prop_list
*node
= this->main_type
->dyn_prop_list
;
2677 while (node
!= NULL
)
2679 if (node
->prop_kind
== prop_kind
)
2686 /* See gdbtypes.h */
2689 type::add_dyn_prop (dynamic_prop_node_kind prop_kind
, dynamic_prop prop
)
2691 struct dynamic_prop_list
*temp
;
2693 gdb_assert (TYPE_OBJFILE_OWNED (this));
2695 temp
= XOBNEW (&TYPE_OBJFILE (this)->objfile_obstack
,
2696 struct dynamic_prop_list
);
2697 temp
->prop_kind
= prop_kind
;
2699 temp
->next
= this->main_type
->dyn_prop_list
;
2701 this->main_type
->dyn_prop_list
= temp
;
2704 /* See gdbtypes.h. */
2707 type::remove_dyn_prop (dynamic_prop_node_kind kind
)
2709 struct dynamic_prop_list
*prev_node
, *curr_node
;
2711 curr_node
= this->main_type
->dyn_prop_list
;
2714 while (NULL
!= curr_node
)
2716 if (curr_node
->prop_kind
== kind
)
2718 /* Update the linked list but don't free anything.
2719 The property was allocated on objstack and it is not known
2720 if we are on top of it. Nevertheless, everything is released
2721 when the complete objstack is freed. */
2722 if (NULL
== prev_node
)
2723 this->main_type
->dyn_prop_list
= curr_node
->next
;
2725 prev_node
->next
= curr_node
->next
;
2730 prev_node
= curr_node
;
2731 curr_node
= curr_node
->next
;
2735 /* Find the real type of TYPE. This function returns the real type,
2736 after removing all layers of typedefs, and completing opaque or stub
2737 types. Completion changes the TYPE argument, but stripping of
2740 Instance flags (e.g. const/volatile) are preserved as typedefs are
2741 stripped. If necessary a new qualified form of the underlying type
2744 NOTE: This will return a typedef if TYPE_TARGET_TYPE for the typedef has
2745 not been computed and we're either in the middle of reading symbols, or
2746 there was no name for the typedef in the debug info.
2748 NOTE: Lookup of opaque types can throw errors for invalid symbol files.
2749 QUITs in the symbol reading code can also throw.
2750 Thus this function can throw an exception.
2752 If TYPE is a TYPE_CODE_TYPEDEF, its length is updated to the length of
2755 If this is a stubbed struct (i.e. declared as struct foo *), see if
2756 we can find a full definition in some other file. If so, copy this
2757 definition, so we can use it in future. There used to be a comment
2758 (but not any code) that if we don't find a full definition, we'd
2759 set a flag so we don't spend time in the future checking the same
2760 type. That would be a mistake, though--we might load in more
2761 symbols which contain a full definition for the type. */
2764 check_typedef (struct type
*type
)
2766 struct type
*orig_type
= type
;
2767 /* While we're removing typedefs, we don't want to lose qualifiers.
2768 E.g., const/volatile. */
2769 int instance_flags
= TYPE_INSTANCE_FLAGS (type
);
2773 while (type
->code () == TYPE_CODE_TYPEDEF
)
2775 if (!TYPE_TARGET_TYPE (type
))
2780 /* It is dangerous to call lookup_symbol if we are currently
2781 reading a symtab. Infinite recursion is one danger. */
2782 if (currently_reading_symtab
)
2783 return make_qualified_type (type
, instance_flags
, NULL
);
2785 name
= type
->name ();
2786 /* FIXME: shouldn't we look in STRUCT_DOMAIN and/or
2787 VAR_DOMAIN as appropriate? */
2790 stub_noname_complaint ();
2791 return make_qualified_type (type
, instance_flags
, NULL
);
2793 sym
= lookup_symbol (name
, 0, STRUCT_DOMAIN
, 0).symbol
;
2795 TYPE_TARGET_TYPE (type
) = SYMBOL_TYPE (sym
);
2796 else /* TYPE_CODE_UNDEF */
2797 TYPE_TARGET_TYPE (type
) = alloc_type_arch (get_type_arch (type
));
2799 type
= TYPE_TARGET_TYPE (type
);
2801 /* Preserve the instance flags as we traverse down the typedef chain.
2803 Handling address spaces/classes is nasty, what do we do if there's a
2805 E.g., what if an outer typedef marks the type as class_1 and an inner
2806 typedef marks the type as class_2?
2807 This is the wrong place to do such error checking. We leave it to
2808 the code that created the typedef in the first place to flag the
2809 error. We just pick the outer address space (akin to letting the
2810 outer cast in a chain of casting win), instead of assuming
2811 "it can't happen". */
2813 const int ALL_SPACES
= (TYPE_INSTANCE_FLAG_CODE_SPACE
2814 | TYPE_INSTANCE_FLAG_DATA_SPACE
);
2815 const int ALL_CLASSES
= TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL
;
2816 int new_instance_flags
= TYPE_INSTANCE_FLAGS (type
);
2818 /* Treat code vs data spaces and address classes separately. */
2819 if ((instance_flags
& ALL_SPACES
) != 0)
2820 new_instance_flags
&= ~ALL_SPACES
;
2821 if ((instance_flags
& ALL_CLASSES
) != 0)
2822 new_instance_flags
&= ~ALL_CLASSES
;
2824 instance_flags
|= new_instance_flags
;
2828 /* If this is a struct/class/union with no fields, then check
2829 whether a full definition exists somewhere else. This is for
2830 systems where a type definition with no fields is issued for such
2831 types, instead of identifying them as stub types in the first
2834 if (TYPE_IS_OPAQUE (type
)
2835 && opaque_type_resolution
2836 && !currently_reading_symtab
)
2838 const char *name
= type
->name ();
2839 struct type
*newtype
;
2843 stub_noname_complaint ();
2844 return make_qualified_type (type
, instance_flags
, NULL
);
2846 newtype
= lookup_transparent_type (name
);
2850 /* If the resolved type and the stub are in the same
2851 objfile, then replace the stub type with the real deal.
2852 But if they're in separate objfiles, leave the stub
2853 alone; we'll just look up the transparent type every time
2854 we call check_typedef. We can't create pointers between
2855 types allocated to different objfiles, since they may
2856 have different lifetimes. Trying to copy NEWTYPE over to
2857 TYPE's objfile is pointless, too, since you'll have to
2858 move over any other types NEWTYPE refers to, which could
2859 be an unbounded amount of stuff. */
2860 if (TYPE_OBJFILE (newtype
) == TYPE_OBJFILE (type
))
2861 type
= make_qualified_type (newtype
,
2862 TYPE_INSTANCE_FLAGS (type
),
2868 /* Otherwise, rely on the stub flag being set for opaque/stubbed
2870 else if (TYPE_STUB (type
) && !currently_reading_symtab
)
2872 const char *name
= type
->name ();
2873 /* FIXME: shouldn't we look in STRUCT_DOMAIN and/or VAR_DOMAIN
2879 stub_noname_complaint ();
2880 return make_qualified_type (type
, instance_flags
, NULL
);
2882 sym
= lookup_symbol (name
, 0, STRUCT_DOMAIN
, 0).symbol
;
2885 /* Same as above for opaque types, we can replace the stub
2886 with the complete type only if they are in the same
2888 if (TYPE_OBJFILE (SYMBOL_TYPE (sym
)) == TYPE_OBJFILE (type
))
2889 type
= make_qualified_type (SYMBOL_TYPE (sym
),
2890 TYPE_INSTANCE_FLAGS (type
),
2893 type
= SYMBOL_TYPE (sym
);
2897 if (TYPE_TARGET_STUB (type
))
2899 struct type
*target_type
= check_typedef (TYPE_TARGET_TYPE (type
));
2901 if (TYPE_STUB (target_type
) || TYPE_TARGET_STUB (target_type
))
2903 /* Nothing we can do. */
2905 else if (type
->code () == TYPE_CODE_RANGE
)
2907 TYPE_LENGTH (type
) = TYPE_LENGTH (target_type
);
2908 TYPE_TARGET_STUB (type
) = 0;
2910 else if (type
->code () == TYPE_CODE_ARRAY
2911 && update_static_array_size (type
))
2912 TYPE_TARGET_STUB (type
) = 0;
2915 type
= make_qualified_type (type
, instance_flags
, NULL
);
2917 /* Cache TYPE_LENGTH for future use. */
2918 TYPE_LENGTH (orig_type
) = TYPE_LENGTH (type
);
2923 /* Parse a type expression in the string [P..P+LENGTH). If an error
2924 occurs, silently return a void type. */
2926 static struct type
*
2927 safe_parse_type (struct gdbarch
*gdbarch
, char *p
, int length
)
2929 struct ui_file
*saved_gdb_stderr
;
2930 struct type
*type
= NULL
; /* Initialize to keep gcc happy. */
2932 /* Suppress error messages. */
2933 saved_gdb_stderr
= gdb_stderr
;
2934 gdb_stderr
= &null_stream
;
2936 /* Call parse_and_eval_type() without fear of longjmp()s. */
2939 type
= parse_and_eval_type (p
, length
);
2941 catch (const gdb_exception_error
&except
)
2943 type
= builtin_type (gdbarch
)->builtin_void
;
2946 /* Stop suppressing error messages. */
2947 gdb_stderr
= saved_gdb_stderr
;
2952 /* Ugly hack to convert method stubs into method types.
2954 He ain't kiddin'. This demangles the name of the method into a
2955 string including argument types, parses out each argument type,
2956 generates a string casting a zero to that type, evaluates the
2957 string, and stuffs the resulting type into an argtype vector!!!
2958 Then it knows the type of the whole function (including argument
2959 types for overloading), which info used to be in the stab's but was
2960 removed to hack back the space required for them. */
2963 check_stub_method (struct type
*type
, int method_id
, int signature_id
)
2965 struct gdbarch
*gdbarch
= get_type_arch (type
);
2967 char *mangled_name
= gdb_mangle_name (type
, method_id
, signature_id
);
2968 char *demangled_name
= gdb_demangle (mangled_name
,
2969 DMGL_PARAMS
| DMGL_ANSI
);
2970 char *argtypetext
, *p
;
2971 int depth
= 0, argcount
= 1;
2972 struct field
*argtypes
;
2975 /* Make sure we got back a function string that we can use. */
2977 p
= strchr (demangled_name
, '(');
2981 if (demangled_name
== NULL
|| p
== NULL
)
2982 error (_("Internal: Cannot demangle mangled name `%s'."),
2985 /* Now, read in the parameters that define this type. */
2990 if (*p
== '(' || *p
== '<')
2994 else if (*p
== ')' || *p
== '>')
2998 else if (*p
== ',' && depth
== 0)
3006 /* If we read one argument and it was ``void'', don't count it. */
3007 if (startswith (argtypetext
, "(void)"))
3010 /* We need one extra slot, for the THIS pointer. */
3012 argtypes
= (struct field
*)
3013 TYPE_ALLOC (type
, (argcount
+ 1) * sizeof (struct field
));
3016 /* Add THIS pointer for non-static methods. */
3017 f
= TYPE_FN_FIELDLIST1 (type
, method_id
);
3018 if (TYPE_FN_FIELD_STATIC_P (f
, signature_id
))
3022 argtypes
[0].set_type (lookup_pointer_type (type
));
3026 if (*p
!= ')') /* () means no args, skip while. */
3031 if (depth
<= 0 && (*p
== ',' || *p
== ')'))
3033 /* Avoid parsing of ellipsis, they will be handled below.
3034 Also avoid ``void'' as above. */
3035 if (strncmp (argtypetext
, "...", p
- argtypetext
) != 0
3036 && strncmp (argtypetext
, "void", p
- argtypetext
) != 0)
3038 argtypes
[argcount
].set_type
3039 (safe_parse_type (gdbarch
, argtypetext
, p
- argtypetext
));
3042 argtypetext
= p
+ 1;
3045 if (*p
== '(' || *p
== '<')
3049 else if (*p
== ')' || *p
== '>')
3058 TYPE_FN_FIELD_PHYSNAME (f
, signature_id
) = mangled_name
;
3060 /* Now update the old "stub" type into a real type. */
3061 mtype
= TYPE_FN_FIELD_TYPE (f
, signature_id
);
3062 /* MTYPE may currently be a function (TYPE_CODE_FUNC).
3063 We want a method (TYPE_CODE_METHOD). */
3064 smash_to_method_type (mtype
, type
, TYPE_TARGET_TYPE (mtype
),
3065 argtypes
, argcount
, p
[-2] == '.');
3066 TYPE_STUB (mtype
) = 0;
3067 TYPE_FN_FIELD_STUB (f
, signature_id
) = 0;
3069 xfree (demangled_name
);
3072 /* This is the external interface to check_stub_method, above. This
3073 function unstubs all of the signatures for TYPE's METHOD_ID method
3074 name. After calling this function TYPE_FN_FIELD_STUB will be
3075 cleared for each signature and TYPE_FN_FIELDLIST_NAME will be
3078 This function unfortunately can not die until stabs do. */
3081 check_stub_method_group (struct type
*type
, int method_id
)
3083 int len
= TYPE_FN_FIELDLIST_LENGTH (type
, method_id
);
3084 struct fn_field
*f
= TYPE_FN_FIELDLIST1 (type
, method_id
);
3086 for (int j
= 0; j
< len
; j
++)
3088 if (TYPE_FN_FIELD_STUB (f
, j
))
3089 check_stub_method (type
, method_id
, j
);
3093 /* Ensure it is in .rodata (if available) by working around GCC PR 44690. */
3094 const struct cplus_struct_type cplus_struct_default
= { };
3097 allocate_cplus_struct_type (struct type
*type
)
3099 if (HAVE_CPLUS_STRUCT (type
))
3100 /* Structure was already allocated. Nothing more to do. */
3103 TYPE_SPECIFIC_FIELD (type
) = TYPE_SPECIFIC_CPLUS_STUFF
;
3104 TYPE_RAW_CPLUS_SPECIFIC (type
) = (struct cplus_struct_type
*)
3105 TYPE_ALLOC (type
, sizeof (struct cplus_struct_type
));
3106 *(TYPE_RAW_CPLUS_SPECIFIC (type
)) = cplus_struct_default
;
3107 set_type_vptr_fieldno (type
, -1);
3110 const struct gnat_aux_type gnat_aux_default
=
3113 /* Set the TYPE's type-specific kind to TYPE_SPECIFIC_GNAT_STUFF,
3114 and allocate the associated gnat-specific data. The gnat-specific
3115 data is also initialized to gnat_aux_default. */
3118 allocate_gnat_aux_type (struct type
*type
)
3120 TYPE_SPECIFIC_FIELD (type
) = TYPE_SPECIFIC_GNAT_STUFF
;
3121 TYPE_GNAT_SPECIFIC (type
) = (struct gnat_aux_type
*)
3122 TYPE_ALLOC (type
, sizeof (struct gnat_aux_type
));
3123 *(TYPE_GNAT_SPECIFIC (type
)) = gnat_aux_default
;
3126 /* Helper function to initialize a newly allocated type. Set type code
3127 to CODE and initialize the type-specific fields accordingly. */
3130 set_type_code (struct type
*type
, enum type_code code
)
3132 type
->set_code (code
);
3136 case TYPE_CODE_STRUCT
:
3137 case TYPE_CODE_UNION
:
3138 case TYPE_CODE_NAMESPACE
:
3139 INIT_CPLUS_SPECIFIC (type
);
3142 TYPE_SPECIFIC_FIELD (type
) = TYPE_SPECIFIC_FLOATFORMAT
;
3144 case TYPE_CODE_FUNC
:
3145 INIT_FUNC_SPECIFIC (type
);
3150 /* Helper function to verify floating-point format and size.
3151 BIT is the type size in bits; if BIT equals -1, the size is
3152 determined by the floatformat. Returns size to be used. */
3155 verify_floatformat (int bit
, const struct floatformat
*floatformat
)
3157 gdb_assert (floatformat
!= NULL
);
3160 bit
= floatformat
->totalsize
;
3162 gdb_assert (bit
>= 0);
3163 gdb_assert (bit
>= floatformat
->totalsize
);
3168 /* Return the floating-point format for a floating-point variable of
3171 const struct floatformat
*
3172 floatformat_from_type (const struct type
*type
)
3174 gdb_assert (type
->code () == TYPE_CODE_FLT
);
3175 gdb_assert (TYPE_FLOATFORMAT (type
));
3176 return TYPE_FLOATFORMAT (type
);
3179 /* Helper function to initialize the standard scalar types.
3181 If NAME is non-NULL, then it is used to initialize the type name.
3182 Note that NAME is not copied; it is required to have a lifetime at
3183 least as long as OBJFILE. */
3186 init_type (struct objfile
*objfile
, enum type_code code
, int bit
,
3191 type
= alloc_type (objfile
);
3192 set_type_code (type
, code
);
3193 gdb_assert ((bit
% TARGET_CHAR_BIT
) == 0);
3194 TYPE_LENGTH (type
) = bit
/ TARGET_CHAR_BIT
;
3195 type
->set_name (name
);
3200 /* Allocate a TYPE_CODE_ERROR type structure associated with OBJFILE,
3201 to use with variables that have no debug info. NAME is the type
3204 static struct type
*
3205 init_nodebug_var_type (struct objfile
*objfile
, const char *name
)
3207 return init_type (objfile
, TYPE_CODE_ERROR
, 0, name
);
3210 /* Allocate a TYPE_CODE_INT type structure associated with OBJFILE.
3211 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
3212 the type's TYPE_UNSIGNED flag. NAME is the type name. */
3215 init_integer_type (struct objfile
*objfile
,
3216 int bit
, int unsigned_p
, const char *name
)
3220 t
= init_type (objfile
, TYPE_CODE_INT
, bit
, name
);
3222 TYPE_UNSIGNED (t
) = 1;
3227 /* Allocate a TYPE_CODE_CHAR type structure associated with OBJFILE.
3228 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
3229 the type's TYPE_UNSIGNED flag. NAME is the type name. */
3232 init_character_type (struct objfile
*objfile
,
3233 int bit
, int unsigned_p
, const char *name
)
3237 t
= init_type (objfile
, TYPE_CODE_CHAR
, bit
, name
);
3239 TYPE_UNSIGNED (t
) = 1;
3244 /* Allocate a TYPE_CODE_BOOL type structure associated with OBJFILE.
3245 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
3246 the type's TYPE_UNSIGNED flag. NAME is the type name. */
3249 init_boolean_type (struct objfile
*objfile
,
3250 int bit
, int unsigned_p
, const char *name
)
3254 t
= init_type (objfile
, TYPE_CODE_BOOL
, bit
, name
);
3256 TYPE_UNSIGNED (t
) = 1;
3261 /* Allocate a TYPE_CODE_FLT type structure associated with OBJFILE.
3262 BIT is the type size in bits; if BIT equals -1, the size is
3263 determined by the floatformat. NAME is the type name. Set the
3264 TYPE_FLOATFORMAT from FLOATFORMATS. BYTE_ORDER is the byte order
3265 to use. If it is BFD_ENDIAN_UNKNOWN (the default), then the byte
3266 order of the objfile's architecture is used. */
3269 init_float_type (struct objfile
*objfile
,
3270 int bit
, const char *name
,
3271 const struct floatformat
**floatformats
,
3272 enum bfd_endian byte_order
)
3274 if (byte_order
== BFD_ENDIAN_UNKNOWN
)
3276 struct gdbarch
*gdbarch
= objfile
->arch ();
3277 byte_order
= gdbarch_byte_order (gdbarch
);
3279 const struct floatformat
*fmt
= floatformats
[byte_order
];
3282 bit
= verify_floatformat (bit
, fmt
);
3283 t
= init_type (objfile
, TYPE_CODE_FLT
, bit
, name
);
3284 TYPE_FLOATFORMAT (t
) = fmt
;
3289 /* Allocate a TYPE_CODE_DECFLOAT type structure associated with OBJFILE.
3290 BIT is the type size in bits. NAME is the type name. */
3293 init_decfloat_type (struct objfile
*objfile
, int bit
, const char *name
)
3297 t
= init_type (objfile
, TYPE_CODE_DECFLOAT
, bit
, name
);
3301 /* Allocate a TYPE_CODE_COMPLEX type structure. NAME is the type
3302 name. TARGET_TYPE is the component type. */
3305 init_complex_type (const char *name
, struct type
*target_type
)
3309 gdb_assert (target_type
->code () == TYPE_CODE_INT
3310 || target_type
->code () == TYPE_CODE_FLT
);
3312 if (TYPE_MAIN_TYPE (target_type
)->flds_bnds
.complex_type
== nullptr)
3314 if (name
== nullptr)
3317 = (char *) TYPE_ALLOC (target_type
,
3318 strlen (target_type
->name ())
3319 + strlen ("_Complex ") + 1);
3320 strcpy (new_name
, "_Complex ");
3321 strcat (new_name
, target_type
->name ());
3325 t
= alloc_type_copy (target_type
);
3326 set_type_code (t
, TYPE_CODE_COMPLEX
);
3327 TYPE_LENGTH (t
) = 2 * TYPE_LENGTH (target_type
);
3330 TYPE_TARGET_TYPE (t
) = target_type
;
3331 TYPE_MAIN_TYPE (target_type
)->flds_bnds
.complex_type
= t
;
3334 return TYPE_MAIN_TYPE (target_type
)->flds_bnds
.complex_type
;
3337 /* Allocate a TYPE_CODE_PTR type structure associated with OBJFILE.
3338 BIT is the pointer type size in bits. NAME is the type name.
3339 TARGET_TYPE is the pointer target type. Always sets the pointer type's
3340 TYPE_UNSIGNED flag. */
3343 init_pointer_type (struct objfile
*objfile
,
3344 int bit
, const char *name
, struct type
*target_type
)
3348 t
= init_type (objfile
, TYPE_CODE_PTR
, bit
, name
);
3349 TYPE_TARGET_TYPE (t
) = target_type
;
3350 TYPE_UNSIGNED (t
) = 1;
3354 /* See gdbtypes.h. */
3357 type_raw_align (struct type
*type
)
3359 if (type
->align_log2
!= 0)
3360 return 1 << (type
->align_log2
- 1);
3364 /* See gdbtypes.h. */
3367 type_align (struct type
*type
)
3369 /* Check alignment provided in the debug information. */
3370 unsigned raw_align
= type_raw_align (type
);
3374 /* Allow the architecture to provide an alignment. */
3375 struct gdbarch
*arch
= get_type_arch (type
);
3376 ULONGEST align
= gdbarch_type_align (arch
, type
);
3380 switch (type
->code ())
3383 case TYPE_CODE_FUNC
:
3384 case TYPE_CODE_FLAGS
:
3386 case TYPE_CODE_RANGE
:
3388 case TYPE_CODE_ENUM
:
3390 case TYPE_CODE_RVALUE_REF
:
3391 case TYPE_CODE_CHAR
:
3392 case TYPE_CODE_BOOL
:
3393 case TYPE_CODE_DECFLOAT
:
3394 case TYPE_CODE_METHODPTR
:
3395 case TYPE_CODE_MEMBERPTR
:
3396 align
= type_length_units (check_typedef (type
));
3399 case TYPE_CODE_ARRAY
:
3400 case TYPE_CODE_COMPLEX
:
3401 case TYPE_CODE_TYPEDEF
:
3402 align
= type_align (TYPE_TARGET_TYPE (type
));
3405 case TYPE_CODE_STRUCT
:
3406 case TYPE_CODE_UNION
:
3408 int number_of_non_static_fields
= 0;
3409 for (unsigned i
= 0; i
< type
->num_fields (); ++i
)
3411 if (!field_is_static (&type
->field (i
)))
3413 number_of_non_static_fields
++;
3414 ULONGEST f_align
= type_align (type
->field (i
).type ());
3417 /* Don't pretend we know something we don't. */
3421 if (f_align
> align
)
3425 /* A struct with no fields, or with only static fields has an
3427 if (number_of_non_static_fields
== 0)
3433 case TYPE_CODE_STRING
:
3434 /* Not sure what to do here, and these can't appear in C or C++
3438 case TYPE_CODE_VOID
:
3442 case TYPE_CODE_ERROR
:
3443 case TYPE_CODE_METHOD
:
3448 if ((align
& (align
- 1)) != 0)
3450 /* Not a power of 2, so pass. */
3457 /* See gdbtypes.h. */
3460 set_type_align (struct type
*type
, ULONGEST align
)
3462 /* Must be a power of 2. Zero is ok. */
3463 gdb_assert ((align
& (align
- 1)) == 0);
3465 unsigned result
= 0;
3472 if (result
>= (1 << TYPE_ALIGN_BITS
))
3475 type
->align_log2
= result
;
3480 /* Queries on types. */
3483 can_dereference (struct type
*t
)
3485 /* FIXME: Should we return true for references as well as
3487 t
= check_typedef (t
);
3490 && t
->code () == TYPE_CODE_PTR
3491 && TYPE_TARGET_TYPE (t
)->code () != TYPE_CODE_VOID
);
3495 is_integral_type (struct type
*t
)
3497 t
= check_typedef (t
);
3500 && ((t
->code () == TYPE_CODE_INT
)
3501 || (t
->code () == TYPE_CODE_ENUM
)
3502 || (t
->code () == TYPE_CODE_FLAGS
)
3503 || (t
->code () == TYPE_CODE_CHAR
)
3504 || (t
->code () == TYPE_CODE_RANGE
)
3505 || (t
->code () == TYPE_CODE_BOOL
)));
3509 is_floating_type (struct type
*t
)
3511 t
= check_typedef (t
);
3514 && ((t
->code () == TYPE_CODE_FLT
)
3515 || (t
->code () == TYPE_CODE_DECFLOAT
)));
3518 /* Return true if TYPE is scalar. */
3521 is_scalar_type (struct type
*type
)
3523 type
= check_typedef (type
);
3525 switch (type
->code ())
3527 case TYPE_CODE_ARRAY
:
3528 case TYPE_CODE_STRUCT
:
3529 case TYPE_CODE_UNION
:
3531 case TYPE_CODE_STRING
:
3538 /* Return true if T is scalar, or a composite type which in practice has
3539 the memory layout of a scalar type. E.g., an array or struct with only
3540 one scalar element inside it, or a union with only scalar elements. */
3543 is_scalar_type_recursive (struct type
*t
)
3545 t
= check_typedef (t
);
3547 if (is_scalar_type (t
))
3549 /* Are we dealing with an array or string of known dimensions? */
3550 else if ((t
->code () == TYPE_CODE_ARRAY
3551 || t
->code () == TYPE_CODE_STRING
) && t
->num_fields () == 1
3552 && t
->index_type ()->code () == TYPE_CODE_RANGE
)
3554 LONGEST low_bound
, high_bound
;
3555 struct type
*elt_type
= check_typedef (TYPE_TARGET_TYPE (t
));
3557 get_discrete_bounds (t
->index_type (), &low_bound
, &high_bound
);
3559 return high_bound
== low_bound
&& is_scalar_type_recursive (elt_type
);
3561 /* Are we dealing with a struct with one element? */
3562 else if (t
->code () == TYPE_CODE_STRUCT
&& t
->num_fields () == 1)
3563 return is_scalar_type_recursive (t
->field (0).type ());
3564 else if (t
->code () == TYPE_CODE_UNION
)
3566 int i
, n
= t
->num_fields ();
3568 /* If all elements of the union are scalar, then the union is scalar. */
3569 for (i
= 0; i
< n
; i
++)
3570 if (!is_scalar_type_recursive (t
->field (i
).type ()))
3579 /* Return true is T is a class or a union. False otherwise. */
3582 class_or_union_p (const struct type
*t
)
3584 return (t
->code () == TYPE_CODE_STRUCT
3585 || t
->code () == TYPE_CODE_UNION
);
3588 /* A helper function which returns true if types A and B represent the
3589 "same" class type. This is true if the types have the same main
3590 type, or the same name. */
3593 class_types_same_p (const struct type
*a
, const struct type
*b
)
3595 return (TYPE_MAIN_TYPE (a
) == TYPE_MAIN_TYPE (b
)
3596 || (a
->name () && b
->name ()
3597 && !strcmp (a
->name (), b
->name ())));
3600 /* If BASE is an ancestor of DCLASS return the distance between them.
3601 otherwise return -1;
3605 class B: public A {};
3606 class C: public B {};
3609 distance_to_ancestor (A, A, 0) = 0
3610 distance_to_ancestor (A, B, 0) = 1
3611 distance_to_ancestor (A, C, 0) = 2
3612 distance_to_ancestor (A, D, 0) = 3
3614 If PUBLIC is 1 then only public ancestors are considered,
3615 and the function returns the distance only if BASE is a public ancestor
3619 distance_to_ancestor (A, D, 1) = -1. */
3622 distance_to_ancestor (struct type
*base
, struct type
*dclass
, int is_public
)
3627 base
= check_typedef (base
);
3628 dclass
= check_typedef (dclass
);
3630 if (class_types_same_p (base
, dclass
))
3633 for (i
= 0; i
< TYPE_N_BASECLASSES (dclass
); i
++)
3635 if (is_public
&& ! BASETYPE_VIA_PUBLIC (dclass
, i
))
3638 d
= distance_to_ancestor (base
, TYPE_BASECLASS (dclass
, i
), is_public
);
3646 /* Check whether BASE is an ancestor or base class or DCLASS
3647 Return 1 if so, and 0 if not.
3648 Note: If BASE and DCLASS are of the same type, this function
3649 will return 1. So for some class A, is_ancestor (A, A) will
3653 is_ancestor (struct type
*base
, struct type
*dclass
)
3655 return distance_to_ancestor (base
, dclass
, 0) >= 0;
3658 /* Like is_ancestor, but only returns true when BASE is a public
3659 ancestor of DCLASS. */
3662 is_public_ancestor (struct type
*base
, struct type
*dclass
)
3664 return distance_to_ancestor (base
, dclass
, 1) >= 0;
3667 /* A helper function for is_unique_ancestor. */
3670 is_unique_ancestor_worker (struct type
*base
, struct type
*dclass
,
3672 const gdb_byte
*valaddr
, int embedded_offset
,
3673 CORE_ADDR address
, struct value
*val
)
3677 base
= check_typedef (base
);
3678 dclass
= check_typedef (dclass
);
3680 for (i
= 0; i
< TYPE_N_BASECLASSES (dclass
) && count
< 2; ++i
)
3685 iter
= check_typedef (TYPE_BASECLASS (dclass
, i
));
3687 this_offset
= baseclass_offset (dclass
, i
, valaddr
, embedded_offset
,
3690 if (class_types_same_p (base
, iter
))
3692 /* If this is the first subclass, set *OFFSET and set count
3693 to 1. Otherwise, if this is at the same offset as
3694 previous instances, do nothing. Otherwise, increment
3698 *offset
= this_offset
;
3701 else if (this_offset
== *offset
)
3709 count
+= is_unique_ancestor_worker (base
, iter
, offset
,
3711 embedded_offset
+ this_offset
,
3718 /* Like is_ancestor, but only returns true if BASE is a unique base
3719 class of the type of VAL. */
3722 is_unique_ancestor (struct type
*base
, struct value
*val
)
3726 return is_unique_ancestor_worker (base
, value_type (val
), &offset
,
3727 value_contents_for_printing (val
),
3728 value_embedded_offset (val
),
3729 value_address (val
), val
) == 1;
3732 /* See gdbtypes.h. */
3735 type_byte_order (const struct type
*type
)
3737 bfd_endian byteorder
= gdbarch_byte_order (get_type_arch (type
));
3738 if (TYPE_ENDIANITY_NOT_DEFAULT (type
))
3740 if (byteorder
== BFD_ENDIAN_BIG
)
3741 return BFD_ENDIAN_LITTLE
;
3744 gdb_assert (byteorder
== BFD_ENDIAN_LITTLE
);
3745 return BFD_ENDIAN_BIG
;
3753 /* Overload resolution. */
3755 /* Return the sum of the rank of A with the rank of B. */
3758 sum_ranks (struct rank a
, struct rank b
)
3761 c
.rank
= a
.rank
+ b
.rank
;
3762 c
.subrank
= a
.subrank
+ b
.subrank
;
3766 /* Compare rank A and B and return:
3768 1 if a is better than b
3769 -1 if b is better than a. */
3772 compare_ranks (struct rank a
, struct rank b
)
3774 if (a
.rank
== b
.rank
)
3776 if (a
.subrank
== b
.subrank
)
3778 if (a
.subrank
< b
.subrank
)
3780 if (a
.subrank
> b
.subrank
)
3784 if (a
.rank
< b
.rank
)
3787 /* a.rank > b.rank */
3791 /* Functions for overload resolution begin here. */
3793 /* Compare two badness vectors A and B and return the result.
3794 0 => A and B are identical
3795 1 => A and B are incomparable
3796 2 => A is better than B
3797 3 => A is worse than B */
3800 compare_badness (const badness_vector
&a
, const badness_vector
&b
)
3804 short found_pos
= 0; /* any positives in c? */
3805 short found_neg
= 0; /* any negatives in c? */
3807 /* differing sizes => incomparable */
3808 if (a
.size () != b
.size ())
3811 /* Subtract b from a */
3812 for (i
= 0; i
< a
.size (); i
++)
3814 tmp
= compare_ranks (b
[i
], a
[i
]);
3824 return 1; /* incomparable */
3826 return 3; /* A > B */
3832 return 2; /* A < B */
3834 return 0; /* A == B */
3838 /* Rank a function by comparing its parameter types (PARMS), to the
3839 types of an argument list (ARGS). Return the badness vector. This
3840 has ARGS.size() + 1 entries. */
3843 rank_function (gdb::array_view
<type
*> parms
,
3844 gdb::array_view
<value
*> args
)
3846 /* add 1 for the length-match rank. */
3848 bv
.reserve (1 + args
.size ());
3850 /* First compare the lengths of the supplied lists.
3851 If there is a mismatch, set it to a high value. */
3853 /* pai/1997-06-03 FIXME: when we have debug info about default
3854 arguments and ellipsis parameter lists, we should consider those
3855 and rank the length-match more finely. */
3857 bv
.push_back ((args
.size () != parms
.size ())
3858 ? LENGTH_MISMATCH_BADNESS
3859 : EXACT_MATCH_BADNESS
);
3861 /* Now rank all the parameters of the candidate function. */
3862 size_t min_len
= std::min (parms
.size (), args
.size ());
3864 for (size_t i
= 0; i
< min_len
; i
++)
3865 bv
.push_back (rank_one_type (parms
[i
], value_type (args
[i
]),
3868 /* If more arguments than parameters, add dummy entries. */
3869 for (size_t i
= min_len
; i
< args
.size (); i
++)
3870 bv
.push_back (TOO_FEW_PARAMS_BADNESS
);
3875 /* Compare the names of two integer types, assuming that any sign
3876 qualifiers have been checked already. We do it this way because
3877 there may be an "int" in the name of one of the types. */
3880 integer_types_same_name_p (const char *first
, const char *second
)
3882 int first_p
, second_p
;
3884 /* If both are shorts, return 1; if neither is a short, keep
3886 first_p
= (strstr (first
, "short") != NULL
);
3887 second_p
= (strstr (second
, "short") != NULL
);
3888 if (first_p
&& second_p
)
3890 if (first_p
|| second_p
)
3893 /* Likewise for long. */
3894 first_p
= (strstr (first
, "long") != NULL
);
3895 second_p
= (strstr (second
, "long") != NULL
);
3896 if (first_p
&& second_p
)
3898 if (first_p
|| second_p
)
3901 /* Likewise for char. */
3902 first_p
= (strstr (first
, "char") != NULL
);
3903 second_p
= (strstr (second
, "char") != NULL
);
3904 if (first_p
&& second_p
)
3906 if (first_p
|| second_p
)
3909 /* They must both be ints. */
3913 /* Compares type A to type B. Returns true if they represent the same
3914 type, false otherwise. */
3917 types_equal (struct type
*a
, struct type
*b
)
3919 /* Identical type pointers. */
3920 /* However, this still doesn't catch all cases of same type for b
3921 and a. The reason is that builtin types are different from
3922 the same ones constructed from the object. */
3926 /* Resolve typedefs */
3927 if (a
->code () == TYPE_CODE_TYPEDEF
)
3928 a
= check_typedef (a
);
3929 if (b
->code () == TYPE_CODE_TYPEDEF
)
3930 b
= check_typedef (b
);
3932 /* If after resolving typedefs a and b are not of the same type
3933 code then they are not equal. */
3934 if (a
->code () != b
->code ())
3937 /* If a and b are both pointers types or both reference types then
3938 they are equal of the same type iff the objects they refer to are
3939 of the same type. */
3940 if (a
->code () == TYPE_CODE_PTR
3941 || a
->code () == TYPE_CODE_REF
)
3942 return types_equal (TYPE_TARGET_TYPE (a
),
3943 TYPE_TARGET_TYPE (b
));
3945 /* Well, damnit, if the names are exactly the same, I'll say they
3946 are exactly the same. This happens when we generate method
3947 stubs. The types won't point to the same address, but they
3948 really are the same. */
3950 if (a
->name () && b
->name ()
3951 && strcmp (a
->name (), b
->name ()) == 0)
3954 /* Check if identical after resolving typedefs. */
3958 /* Two function types are equal if their argument and return types
3960 if (a
->code () == TYPE_CODE_FUNC
)
3964 if (a
->num_fields () != b
->num_fields ())
3967 if (!types_equal (TYPE_TARGET_TYPE (a
), TYPE_TARGET_TYPE (b
)))
3970 for (i
= 0; i
< a
->num_fields (); ++i
)
3971 if (!types_equal (a
->field (i
).type (), b
->field (i
).type ()))
3980 /* Deep comparison of types. */
3982 /* An entry in the type-equality bcache. */
3984 struct type_equality_entry
3986 type_equality_entry (struct type
*t1
, struct type
*t2
)
3992 struct type
*type1
, *type2
;
3995 /* A helper function to compare two strings. Returns true if they are
3996 the same, false otherwise. Handles NULLs properly. */
3999 compare_maybe_null_strings (const char *s
, const char *t
)
4001 if (s
== NULL
|| t
== NULL
)
4003 return strcmp (s
, t
) == 0;
4006 /* A helper function for check_types_worklist that checks two types for
4007 "deep" equality. Returns true if the types are considered the
4008 same, false otherwise. */
4011 check_types_equal (struct type
*type1
, struct type
*type2
,
4012 std::vector
<type_equality_entry
> *worklist
)
4014 type1
= check_typedef (type1
);
4015 type2
= check_typedef (type2
);
4020 if (type1
->code () != type2
->code ()
4021 || TYPE_LENGTH (type1
) != TYPE_LENGTH (type2
)
4022 || TYPE_UNSIGNED (type1
) != TYPE_UNSIGNED (type2
)
4023 || TYPE_NOSIGN (type1
) != TYPE_NOSIGN (type2
)
4024 || TYPE_ENDIANITY_NOT_DEFAULT (type1
) != TYPE_ENDIANITY_NOT_DEFAULT (type2
)
4025 || TYPE_VARARGS (type1
) != TYPE_VARARGS (type2
)
4026 || TYPE_VECTOR (type1
) != TYPE_VECTOR (type2
)
4027 || TYPE_NOTTEXT (type1
) != TYPE_NOTTEXT (type2
)
4028 || TYPE_INSTANCE_FLAGS (type1
) != TYPE_INSTANCE_FLAGS (type2
)
4029 || type1
->num_fields () != type2
->num_fields ())
4032 if (!compare_maybe_null_strings (type1
->name (), type2
->name ()))
4034 if (!compare_maybe_null_strings (type1
->name (), type2
->name ()))
4037 if (type1
->code () == TYPE_CODE_RANGE
)
4039 if (*TYPE_RANGE_DATA (type1
) != *TYPE_RANGE_DATA (type2
))
4046 for (i
= 0; i
< type1
->num_fields (); ++i
)
4048 const struct field
*field1
= &type1
->field (i
);
4049 const struct field
*field2
= &type2
->field (i
);
4051 if (FIELD_ARTIFICIAL (*field1
) != FIELD_ARTIFICIAL (*field2
)
4052 || FIELD_BITSIZE (*field1
) != FIELD_BITSIZE (*field2
)
4053 || FIELD_LOC_KIND (*field1
) != FIELD_LOC_KIND (*field2
))
4055 if (!compare_maybe_null_strings (FIELD_NAME (*field1
),
4056 FIELD_NAME (*field2
)))
4058 switch (FIELD_LOC_KIND (*field1
))
4060 case FIELD_LOC_KIND_BITPOS
:
4061 if (FIELD_BITPOS (*field1
) != FIELD_BITPOS (*field2
))
4064 case FIELD_LOC_KIND_ENUMVAL
:
4065 if (FIELD_ENUMVAL (*field1
) != FIELD_ENUMVAL (*field2
))
4068 case FIELD_LOC_KIND_PHYSADDR
:
4069 if (FIELD_STATIC_PHYSADDR (*field1
)
4070 != FIELD_STATIC_PHYSADDR (*field2
))
4073 case FIELD_LOC_KIND_PHYSNAME
:
4074 if (!compare_maybe_null_strings (FIELD_STATIC_PHYSNAME (*field1
),
4075 FIELD_STATIC_PHYSNAME (*field2
)))
4078 case FIELD_LOC_KIND_DWARF_BLOCK
:
4080 struct dwarf2_locexpr_baton
*block1
, *block2
;
4082 block1
= FIELD_DWARF_BLOCK (*field1
);
4083 block2
= FIELD_DWARF_BLOCK (*field2
);
4084 if (block1
->per_cu
!= block2
->per_cu
4085 || block1
->size
!= block2
->size
4086 || memcmp (block1
->data
, block2
->data
, block1
->size
) != 0)
4091 internal_error (__FILE__
, __LINE__
, _("Unsupported field kind "
4092 "%d by check_types_equal"),
4093 FIELD_LOC_KIND (*field1
));
4096 worklist
->emplace_back (field1
->type (), field2
->type ());
4100 if (TYPE_TARGET_TYPE (type1
) != NULL
)
4102 if (TYPE_TARGET_TYPE (type2
) == NULL
)
4105 worklist
->emplace_back (TYPE_TARGET_TYPE (type1
),
4106 TYPE_TARGET_TYPE (type2
));
4108 else if (TYPE_TARGET_TYPE (type2
) != NULL
)
4114 /* Check types on a worklist for equality. Returns false if any pair
4115 is not equal, true if they are all considered equal. */
4118 check_types_worklist (std::vector
<type_equality_entry
> *worklist
,
4121 while (!worklist
->empty ())
4125 struct type_equality_entry entry
= std::move (worklist
->back ());
4126 worklist
->pop_back ();
4128 /* If the type pair has already been visited, we know it is
4130 cache
->insert (&entry
, sizeof (entry
), &added
);
4134 if (!check_types_equal (entry
.type1
, entry
.type2
, worklist
))
4141 /* Return true if types TYPE1 and TYPE2 are equal, as determined by a
4142 "deep comparison". Otherwise return false. */
4145 types_deeply_equal (struct type
*type1
, struct type
*type2
)
4147 std::vector
<type_equality_entry
> worklist
;
4149 gdb_assert (type1
!= NULL
&& type2
!= NULL
);
4151 /* Early exit for the simple case. */
4155 gdb::bcache
cache (nullptr, nullptr);
4156 worklist
.emplace_back (type1
, type2
);
4157 return check_types_worklist (&worklist
, &cache
);
4160 /* Allocated status of type TYPE. Return zero if type TYPE is allocated.
4161 Otherwise return one. */
4164 type_not_allocated (const struct type
*type
)
4166 struct dynamic_prop
*prop
= TYPE_ALLOCATED_PROP (type
);
4168 return (prop
&& TYPE_DYN_PROP_KIND (prop
) == PROP_CONST
4169 && !TYPE_DYN_PROP_ADDR (prop
));
4172 /* Associated status of type TYPE. Return zero if type TYPE is associated.
4173 Otherwise return one. */
4176 type_not_associated (const struct type
*type
)
4178 struct dynamic_prop
*prop
= TYPE_ASSOCIATED_PROP (type
);
4180 return (prop
&& TYPE_DYN_PROP_KIND (prop
) == PROP_CONST
4181 && !TYPE_DYN_PROP_ADDR (prop
));
4184 /* rank_one_type helper for when PARM's type code is TYPE_CODE_PTR. */
4187 rank_one_type_parm_ptr (struct type
*parm
, struct type
*arg
, struct value
*value
)
4189 struct rank rank
= {0,0};
4191 switch (arg
->code ())
4195 /* Allowed pointer conversions are:
4196 (a) pointer to void-pointer conversion. */
4197 if (TYPE_TARGET_TYPE (parm
)->code () == TYPE_CODE_VOID
)
4198 return VOID_PTR_CONVERSION_BADNESS
;
4200 /* (b) pointer to ancestor-pointer conversion. */
4201 rank
.subrank
= distance_to_ancestor (TYPE_TARGET_TYPE (parm
),
4202 TYPE_TARGET_TYPE (arg
),
4204 if (rank
.subrank
>= 0)
4205 return sum_ranks (BASE_PTR_CONVERSION_BADNESS
, rank
);
4207 return INCOMPATIBLE_TYPE_BADNESS
;
4208 case TYPE_CODE_ARRAY
:
4210 struct type
*t1
= TYPE_TARGET_TYPE (parm
);
4211 struct type
*t2
= TYPE_TARGET_TYPE (arg
);
4213 if (types_equal (t1
, t2
))
4215 /* Make sure they are CV equal. */
4216 if (TYPE_CONST (t1
) != TYPE_CONST (t2
))
4217 rank
.subrank
|= CV_CONVERSION_CONST
;
4218 if (TYPE_VOLATILE (t1
) != TYPE_VOLATILE (t2
))
4219 rank
.subrank
|= CV_CONVERSION_VOLATILE
;
4220 if (rank
.subrank
!= 0)
4221 return sum_ranks (CV_CONVERSION_BADNESS
, rank
);
4222 return EXACT_MATCH_BADNESS
;
4224 return INCOMPATIBLE_TYPE_BADNESS
;
4226 case TYPE_CODE_FUNC
:
4227 return rank_one_type (TYPE_TARGET_TYPE (parm
), arg
, NULL
);
4229 if (value
!= NULL
&& value_type (value
)->code () == TYPE_CODE_INT
)
4231 if (value_as_long (value
) == 0)
4233 /* Null pointer conversion: allow it to be cast to a pointer.
4234 [4.10.1 of C++ standard draft n3290] */
4235 return NULL_POINTER_CONVERSION_BADNESS
;
4239 /* If type checking is disabled, allow the conversion. */
4240 if (!strict_type_checking
)
4241 return NS_INTEGER_POINTER_CONVERSION_BADNESS
;
4245 case TYPE_CODE_ENUM
:
4246 case TYPE_CODE_FLAGS
:
4247 case TYPE_CODE_CHAR
:
4248 case TYPE_CODE_RANGE
:
4249 case TYPE_CODE_BOOL
:
4251 return INCOMPATIBLE_TYPE_BADNESS
;
4255 /* rank_one_type helper for when PARM's type code is TYPE_CODE_ARRAY. */
4258 rank_one_type_parm_array (struct type
*parm
, struct type
*arg
, struct value
*value
)
4260 switch (arg
->code ())
4263 case TYPE_CODE_ARRAY
:
4264 return rank_one_type (TYPE_TARGET_TYPE (parm
),
4265 TYPE_TARGET_TYPE (arg
), NULL
);
4267 return INCOMPATIBLE_TYPE_BADNESS
;
4271 /* rank_one_type helper for when PARM's type code is TYPE_CODE_FUNC. */
4274 rank_one_type_parm_func (struct type
*parm
, struct type
*arg
, struct value
*value
)
4276 switch (arg
->code ())
4278 case TYPE_CODE_PTR
: /* funcptr -> func */
4279 return rank_one_type (parm
, TYPE_TARGET_TYPE (arg
), NULL
);
4281 return INCOMPATIBLE_TYPE_BADNESS
;
4285 /* rank_one_type helper for when PARM's type code is TYPE_CODE_INT. */
4288 rank_one_type_parm_int (struct type
*parm
, struct type
*arg
, struct value
*value
)
4290 switch (arg
->code ())
4293 if (TYPE_LENGTH (arg
) == TYPE_LENGTH (parm
))
4295 /* Deal with signed, unsigned, and plain chars and
4296 signed and unsigned ints. */
4297 if (TYPE_NOSIGN (parm
))
4299 /* This case only for character types. */
4300 if (TYPE_NOSIGN (arg
))
4301 return EXACT_MATCH_BADNESS
; /* plain char -> plain char */
4302 else /* signed/unsigned char -> plain char */
4303 return INTEGER_CONVERSION_BADNESS
;
4305 else if (TYPE_UNSIGNED (parm
))
4307 if (TYPE_UNSIGNED (arg
))
4309 /* unsigned int -> unsigned int, or
4310 unsigned long -> unsigned long */
4311 if (integer_types_same_name_p (parm
->name (),
4313 return EXACT_MATCH_BADNESS
;
4314 else if (integer_types_same_name_p (arg
->name (),
4316 && integer_types_same_name_p (parm
->name (),
4318 /* unsigned int -> unsigned long */
4319 return INTEGER_PROMOTION_BADNESS
;
4321 /* unsigned long -> unsigned int */
4322 return INTEGER_CONVERSION_BADNESS
;
4326 if (integer_types_same_name_p (arg
->name (),
4328 && integer_types_same_name_p (parm
->name (),
4330 /* signed long -> unsigned int */
4331 return INTEGER_CONVERSION_BADNESS
;
4333 /* signed int/long -> unsigned int/long */
4334 return INTEGER_CONVERSION_BADNESS
;
4337 else if (!TYPE_NOSIGN (arg
) && !TYPE_UNSIGNED (arg
))
4339 if (integer_types_same_name_p (parm
->name (),
4341 return EXACT_MATCH_BADNESS
;
4342 else if (integer_types_same_name_p (arg
->name (),
4344 && integer_types_same_name_p (parm
->name (),
4346 return INTEGER_PROMOTION_BADNESS
;
4348 return INTEGER_CONVERSION_BADNESS
;
4351 return INTEGER_CONVERSION_BADNESS
;
4353 else if (TYPE_LENGTH (arg
) < TYPE_LENGTH (parm
))
4354 return INTEGER_PROMOTION_BADNESS
;
4356 return INTEGER_CONVERSION_BADNESS
;
4357 case TYPE_CODE_ENUM
:
4358 case TYPE_CODE_FLAGS
:
4359 case TYPE_CODE_CHAR
:
4360 case TYPE_CODE_RANGE
:
4361 case TYPE_CODE_BOOL
:
4362 if (TYPE_DECLARED_CLASS (arg
))
4363 return INCOMPATIBLE_TYPE_BADNESS
;
4364 return INTEGER_PROMOTION_BADNESS
;
4366 return INT_FLOAT_CONVERSION_BADNESS
;
4368 return NS_POINTER_CONVERSION_BADNESS
;
4370 return INCOMPATIBLE_TYPE_BADNESS
;
4374 /* rank_one_type helper for when PARM's type code is TYPE_CODE_ENUM. */
4377 rank_one_type_parm_enum (struct type
*parm
, struct type
*arg
, struct value
*value
)
4379 switch (arg
->code ())
4382 case TYPE_CODE_CHAR
:
4383 case TYPE_CODE_RANGE
:
4384 case TYPE_CODE_BOOL
:
4385 case TYPE_CODE_ENUM
:
4386 if (TYPE_DECLARED_CLASS (parm
) || TYPE_DECLARED_CLASS (arg
))
4387 return INCOMPATIBLE_TYPE_BADNESS
;
4388 return INTEGER_CONVERSION_BADNESS
;
4390 return INT_FLOAT_CONVERSION_BADNESS
;
4392 return INCOMPATIBLE_TYPE_BADNESS
;
4396 /* rank_one_type helper for when PARM's type code is TYPE_CODE_CHAR. */
4399 rank_one_type_parm_char (struct type
*parm
, struct type
*arg
, struct value
*value
)
4401 switch (arg
->code ())
4403 case TYPE_CODE_RANGE
:
4404 case TYPE_CODE_BOOL
:
4405 case TYPE_CODE_ENUM
:
4406 if (TYPE_DECLARED_CLASS (arg
))
4407 return INCOMPATIBLE_TYPE_BADNESS
;
4408 return INTEGER_CONVERSION_BADNESS
;
4410 return INT_FLOAT_CONVERSION_BADNESS
;
4412 if (TYPE_LENGTH (arg
) > TYPE_LENGTH (parm
))
4413 return INTEGER_CONVERSION_BADNESS
;
4414 else if (TYPE_LENGTH (arg
) < TYPE_LENGTH (parm
))
4415 return INTEGER_PROMOTION_BADNESS
;
4417 case TYPE_CODE_CHAR
:
4418 /* Deal with signed, unsigned, and plain chars for C++ and
4419 with int cases falling through from previous case. */
4420 if (TYPE_NOSIGN (parm
))
4422 if (TYPE_NOSIGN (arg
))
4423 return EXACT_MATCH_BADNESS
;
4425 return INTEGER_CONVERSION_BADNESS
;
4427 else if (TYPE_UNSIGNED (parm
))
4429 if (TYPE_UNSIGNED (arg
))
4430 return EXACT_MATCH_BADNESS
;
4432 return INTEGER_PROMOTION_BADNESS
;
4434 else if (!TYPE_NOSIGN (arg
) && !TYPE_UNSIGNED (arg
))
4435 return EXACT_MATCH_BADNESS
;
4437 return INTEGER_CONVERSION_BADNESS
;
4439 return INCOMPATIBLE_TYPE_BADNESS
;
4443 /* rank_one_type helper for when PARM's type code is TYPE_CODE_RANGE. */
4446 rank_one_type_parm_range (struct type
*parm
, struct type
*arg
, struct value
*value
)
4448 switch (arg
->code ())
4451 case TYPE_CODE_CHAR
:
4452 case TYPE_CODE_RANGE
:
4453 case TYPE_CODE_BOOL
:
4454 case TYPE_CODE_ENUM
:
4455 return INTEGER_CONVERSION_BADNESS
;
4457 return INT_FLOAT_CONVERSION_BADNESS
;
4459 return INCOMPATIBLE_TYPE_BADNESS
;
4463 /* rank_one_type helper for when PARM's type code is TYPE_CODE_BOOL. */
4466 rank_one_type_parm_bool (struct type
*parm
, struct type
*arg
, struct value
*value
)
4468 switch (arg
->code ())
4470 /* n3290 draft, section 4.12.1 (conv.bool):
4472 "A prvalue of arithmetic, unscoped enumeration, pointer, or
4473 pointer to member type can be converted to a prvalue of type
4474 bool. A zero value, null pointer value, or null member pointer
4475 value is converted to false; any other value is converted to
4476 true. A prvalue of type std::nullptr_t can be converted to a
4477 prvalue of type bool; the resulting value is false." */
4479 case TYPE_CODE_CHAR
:
4480 case TYPE_CODE_ENUM
:
4482 case TYPE_CODE_MEMBERPTR
:
4484 return BOOL_CONVERSION_BADNESS
;
4485 case TYPE_CODE_RANGE
:
4486 return INCOMPATIBLE_TYPE_BADNESS
;
4487 case TYPE_CODE_BOOL
:
4488 return EXACT_MATCH_BADNESS
;
4490 return INCOMPATIBLE_TYPE_BADNESS
;
4494 /* rank_one_type helper for when PARM's type code is TYPE_CODE_FLOAT. */
4497 rank_one_type_parm_float (struct type
*parm
, struct type
*arg
, struct value
*value
)
4499 switch (arg
->code ())
4502 if (TYPE_LENGTH (arg
) < TYPE_LENGTH (parm
))
4503 return FLOAT_PROMOTION_BADNESS
;
4504 else if (TYPE_LENGTH (arg
) == TYPE_LENGTH (parm
))
4505 return EXACT_MATCH_BADNESS
;
4507 return FLOAT_CONVERSION_BADNESS
;
4509 case TYPE_CODE_BOOL
:
4510 case TYPE_CODE_ENUM
:
4511 case TYPE_CODE_RANGE
:
4512 case TYPE_CODE_CHAR
:
4513 return INT_FLOAT_CONVERSION_BADNESS
;
4515 return INCOMPATIBLE_TYPE_BADNESS
;
4519 /* rank_one_type helper for when PARM's type code is TYPE_CODE_COMPLEX. */
4522 rank_one_type_parm_complex (struct type
*parm
, struct type
*arg
, struct value
*value
)
4524 switch (arg
->code ())
4525 { /* Strictly not needed for C++, but... */
4527 return FLOAT_PROMOTION_BADNESS
;
4528 case TYPE_CODE_COMPLEX
:
4529 return EXACT_MATCH_BADNESS
;
4531 return INCOMPATIBLE_TYPE_BADNESS
;
4535 /* rank_one_type helper for when PARM's type code is TYPE_CODE_STRUCT. */
4538 rank_one_type_parm_struct (struct type
*parm
, struct type
*arg
, struct value
*value
)
4540 struct rank rank
= {0, 0};
4542 switch (arg
->code ())
4544 case TYPE_CODE_STRUCT
:
4545 /* Check for derivation */
4546 rank
.subrank
= distance_to_ancestor (parm
, arg
, 0);
4547 if (rank
.subrank
>= 0)
4548 return sum_ranks (BASE_CONVERSION_BADNESS
, rank
);
4551 return INCOMPATIBLE_TYPE_BADNESS
;
4555 /* rank_one_type helper for when PARM's type code is TYPE_CODE_SET. */
4558 rank_one_type_parm_set (struct type
*parm
, struct type
*arg
, struct value
*value
)
4560 switch (arg
->code ())
4564 return rank_one_type (parm
->field (0).type (),
4565 arg
->field (0).type (), NULL
);
4567 return INCOMPATIBLE_TYPE_BADNESS
;
4571 /* Compare one type (PARM) for compatibility with another (ARG).
4572 * PARM is intended to be the parameter type of a function; and
4573 * ARG is the supplied argument's type. This function tests if
4574 * the latter can be converted to the former.
4575 * VALUE is the argument's value or NULL if none (or called recursively)
4577 * Return 0 if they are identical types;
4578 * Otherwise, return an integer which corresponds to how compatible
4579 * PARM is to ARG. The higher the return value, the worse the match.
4580 * Generally the "bad" conversions are all uniformly assigned a 100. */
4583 rank_one_type (struct type
*parm
, struct type
*arg
, struct value
*value
)
4585 struct rank rank
= {0,0};
4587 /* Resolve typedefs */
4588 if (parm
->code () == TYPE_CODE_TYPEDEF
)
4589 parm
= check_typedef (parm
);
4590 if (arg
->code () == TYPE_CODE_TYPEDEF
)
4591 arg
= check_typedef (arg
);
4593 if (TYPE_IS_REFERENCE (parm
) && value
!= NULL
)
4595 if (VALUE_LVAL (value
) == not_lval
)
4597 /* Rvalues should preferably bind to rvalue references or const
4598 lvalue references. */
4599 if (parm
->code () == TYPE_CODE_RVALUE_REF
)
4600 rank
.subrank
= REFERENCE_CONVERSION_RVALUE
;
4601 else if (TYPE_CONST (TYPE_TARGET_TYPE (parm
)))
4602 rank
.subrank
= REFERENCE_CONVERSION_CONST_LVALUE
;
4604 return INCOMPATIBLE_TYPE_BADNESS
;
4605 return sum_ranks (rank
, REFERENCE_CONVERSION_BADNESS
);
4609 /* It's illegal to pass an lvalue as an rvalue. */
4610 if (parm
->code () == TYPE_CODE_RVALUE_REF
)
4611 return INCOMPATIBLE_TYPE_BADNESS
;
4615 if (types_equal (parm
, arg
))
4617 struct type
*t1
= parm
;
4618 struct type
*t2
= arg
;
4620 /* For pointers and references, compare target type. */
4621 if (parm
->code () == TYPE_CODE_PTR
|| TYPE_IS_REFERENCE (parm
))
4623 t1
= TYPE_TARGET_TYPE (parm
);
4624 t2
= TYPE_TARGET_TYPE (arg
);
4627 /* Make sure they are CV equal, too. */
4628 if (TYPE_CONST (t1
) != TYPE_CONST (t2
))
4629 rank
.subrank
|= CV_CONVERSION_CONST
;
4630 if (TYPE_VOLATILE (t1
) != TYPE_VOLATILE (t2
))
4631 rank
.subrank
|= CV_CONVERSION_VOLATILE
;
4632 if (rank
.subrank
!= 0)
4633 return sum_ranks (CV_CONVERSION_BADNESS
, rank
);
4634 return EXACT_MATCH_BADNESS
;
4637 /* See through references, since we can almost make non-references
4640 if (TYPE_IS_REFERENCE (arg
))
4641 return (sum_ranks (rank_one_type (parm
, TYPE_TARGET_TYPE (arg
), NULL
),
4642 REFERENCE_SEE_THROUGH_BADNESS
));
4643 if (TYPE_IS_REFERENCE (parm
))
4644 return (sum_ranks (rank_one_type (TYPE_TARGET_TYPE (parm
), arg
, NULL
),
4645 REFERENCE_SEE_THROUGH_BADNESS
));
4647 /* Debugging only. */
4648 fprintf_filtered (gdb_stderr
,
4649 "------ Arg is %s [%d], parm is %s [%d]\n",
4650 arg
->name (), arg
->code (),
4651 parm
->name (), parm
->code ());
4653 /* x -> y means arg of type x being supplied for parameter of type y. */
4655 switch (parm
->code ())
4658 return rank_one_type_parm_ptr (parm
, arg
, value
);
4659 case TYPE_CODE_ARRAY
:
4660 return rank_one_type_parm_array (parm
, arg
, value
);
4661 case TYPE_CODE_FUNC
:
4662 return rank_one_type_parm_func (parm
, arg
, value
);
4664 return rank_one_type_parm_int (parm
, arg
, value
);
4665 case TYPE_CODE_ENUM
:
4666 return rank_one_type_parm_enum (parm
, arg
, value
);
4667 case TYPE_CODE_CHAR
:
4668 return rank_one_type_parm_char (parm
, arg
, value
);
4669 case TYPE_CODE_RANGE
:
4670 return rank_one_type_parm_range (parm
, arg
, value
);
4671 case TYPE_CODE_BOOL
:
4672 return rank_one_type_parm_bool (parm
, arg
, value
);
4674 return rank_one_type_parm_float (parm
, arg
, value
);
4675 case TYPE_CODE_COMPLEX
:
4676 return rank_one_type_parm_complex (parm
, arg
, value
);
4677 case TYPE_CODE_STRUCT
:
4678 return rank_one_type_parm_struct (parm
, arg
, value
);
4680 return rank_one_type_parm_set (parm
, arg
, value
);
4682 return INCOMPATIBLE_TYPE_BADNESS
;
4683 } /* switch (arg->code ()) */
4686 /* End of functions for overload resolution. */
4688 /* Routines to pretty-print types. */
4691 print_bit_vector (B_TYPE
*bits
, int nbits
)
4695 for (bitno
= 0; bitno
< nbits
; bitno
++)
4697 if ((bitno
% 8) == 0)
4699 puts_filtered (" ");
4701 if (B_TST (bits
, bitno
))
4702 printf_filtered (("1"));
4704 printf_filtered (("0"));
4708 /* Note the first arg should be the "this" pointer, we may not want to
4709 include it since we may get into a infinitely recursive
4713 print_args (struct field
*args
, int nargs
, int spaces
)
4719 for (i
= 0; i
< nargs
; i
++)
4721 printfi_filtered (spaces
, "[%d] name '%s'\n", i
,
4722 args
[i
].name
!= NULL
? args
[i
].name
: "<NULL>");
4723 recursive_dump_type (args
[i
].type (), spaces
+ 2);
4729 field_is_static (struct field
*f
)
4731 /* "static" fields are the fields whose location is not relative
4732 to the address of the enclosing struct. It would be nice to
4733 have a dedicated flag that would be set for static fields when
4734 the type is being created. But in practice, checking the field
4735 loc_kind should give us an accurate answer. */
4736 return (FIELD_LOC_KIND (*f
) == FIELD_LOC_KIND_PHYSNAME
4737 || FIELD_LOC_KIND (*f
) == FIELD_LOC_KIND_PHYSADDR
);
4741 dump_fn_fieldlists (struct type
*type
, int spaces
)
4747 printfi_filtered (spaces
, "fn_fieldlists ");
4748 gdb_print_host_address (TYPE_FN_FIELDLISTS (type
), gdb_stdout
);
4749 printf_filtered ("\n");
4750 for (method_idx
= 0; method_idx
< TYPE_NFN_FIELDS (type
); method_idx
++)
4752 f
= TYPE_FN_FIELDLIST1 (type
, method_idx
);
4753 printfi_filtered (spaces
+ 2, "[%d] name '%s' (",
4755 TYPE_FN_FIELDLIST_NAME (type
, method_idx
));
4756 gdb_print_host_address (TYPE_FN_FIELDLIST_NAME (type
, method_idx
),
4758 printf_filtered (_(") length %d\n"),
4759 TYPE_FN_FIELDLIST_LENGTH (type
, method_idx
));
4760 for (overload_idx
= 0;
4761 overload_idx
< TYPE_FN_FIELDLIST_LENGTH (type
, method_idx
);
4764 printfi_filtered (spaces
+ 4, "[%d] physname '%s' (",
4766 TYPE_FN_FIELD_PHYSNAME (f
, overload_idx
));
4767 gdb_print_host_address (TYPE_FN_FIELD_PHYSNAME (f
, overload_idx
),
4769 printf_filtered (")\n");
4770 printfi_filtered (spaces
+ 8, "type ");
4771 gdb_print_host_address (TYPE_FN_FIELD_TYPE (f
, overload_idx
),
4773 printf_filtered ("\n");
4775 recursive_dump_type (TYPE_FN_FIELD_TYPE (f
, overload_idx
),
4778 printfi_filtered (spaces
+ 8, "args ");
4779 gdb_print_host_address (TYPE_FN_FIELD_ARGS (f
, overload_idx
),
4781 printf_filtered ("\n");
4782 print_args (TYPE_FN_FIELD_ARGS (f
, overload_idx
),
4783 TYPE_FN_FIELD_TYPE (f
, overload_idx
)->num_fields (),
4785 printfi_filtered (spaces
+ 8, "fcontext ");
4786 gdb_print_host_address (TYPE_FN_FIELD_FCONTEXT (f
, overload_idx
),
4788 printf_filtered ("\n");
4790 printfi_filtered (spaces
+ 8, "is_const %d\n",
4791 TYPE_FN_FIELD_CONST (f
, overload_idx
));
4792 printfi_filtered (spaces
+ 8, "is_volatile %d\n",
4793 TYPE_FN_FIELD_VOLATILE (f
, overload_idx
));
4794 printfi_filtered (spaces
+ 8, "is_private %d\n",
4795 TYPE_FN_FIELD_PRIVATE (f
, overload_idx
));
4796 printfi_filtered (spaces
+ 8, "is_protected %d\n",
4797 TYPE_FN_FIELD_PROTECTED (f
, overload_idx
));
4798 printfi_filtered (spaces
+ 8, "is_stub %d\n",
4799 TYPE_FN_FIELD_STUB (f
, overload_idx
));
4800 printfi_filtered (spaces
+ 8, "defaulted %d\n",
4801 TYPE_FN_FIELD_DEFAULTED (f
, overload_idx
));
4802 printfi_filtered (spaces
+ 8, "is_deleted %d\n",
4803 TYPE_FN_FIELD_DELETED (f
, overload_idx
));
4804 printfi_filtered (spaces
+ 8, "voffset %u\n",
4805 TYPE_FN_FIELD_VOFFSET (f
, overload_idx
));
4811 print_cplus_stuff (struct type
*type
, int spaces
)
4813 printfi_filtered (spaces
, "vptr_fieldno %d\n", TYPE_VPTR_FIELDNO (type
));
4814 printfi_filtered (spaces
, "vptr_basetype ");
4815 gdb_print_host_address (TYPE_VPTR_BASETYPE (type
), gdb_stdout
);
4816 puts_filtered ("\n");
4817 if (TYPE_VPTR_BASETYPE (type
) != NULL
)
4818 recursive_dump_type (TYPE_VPTR_BASETYPE (type
), spaces
+ 2);
4820 printfi_filtered (spaces
, "n_baseclasses %d\n",
4821 TYPE_N_BASECLASSES (type
));
4822 printfi_filtered (spaces
, "nfn_fields %d\n",
4823 TYPE_NFN_FIELDS (type
));
4824 if (TYPE_N_BASECLASSES (type
) > 0)
4826 printfi_filtered (spaces
, "virtual_field_bits (%d bits at *",
4827 TYPE_N_BASECLASSES (type
));
4828 gdb_print_host_address (TYPE_FIELD_VIRTUAL_BITS (type
),
4830 printf_filtered (")");
4832 print_bit_vector (TYPE_FIELD_VIRTUAL_BITS (type
),
4833 TYPE_N_BASECLASSES (type
));
4834 puts_filtered ("\n");
4836 if (type
->num_fields () > 0)
4838 if (TYPE_FIELD_PRIVATE_BITS (type
) != NULL
)
4840 printfi_filtered (spaces
,
4841 "private_field_bits (%d bits at *",
4842 type
->num_fields ());
4843 gdb_print_host_address (TYPE_FIELD_PRIVATE_BITS (type
),
4845 printf_filtered (")");
4846 print_bit_vector (TYPE_FIELD_PRIVATE_BITS (type
),
4847 type
->num_fields ());
4848 puts_filtered ("\n");
4850 if (TYPE_FIELD_PROTECTED_BITS (type
) != NULL
)
4852 printfi_filtered (spaces
,
4853 "protected_field_bits (%d bits at *",
4854 type
->num_fields ());
4855 gdb_print_host_address (TYPE_FIELD_PROTECTED_BITS (type
),
4857 printf_filtered (")");
4858 print_bit_vector (TYPE_FIELD_PROTECTED_BITS (type
),
4859 type
->num_fields ());
4860 puts_filtered ("\n");
4863 if (TYPE_NFN_FIELDS (type
) > 0)
4865 dump_fn_fieldlists (type
, spaces
);
4868 printfi_filtered (spaces
, "calling_convention %d\n",
4869 TYPE_CPLUS_CALLING_CONVENTION (type
));
4872 /* Print the contents of the TYPE's type_specific union, assuming that
4873 its type-specific kind is TYPE_SPECIFIC_GNAT_STUFF. */
4876 print_gnat_stuff (struct type
*type
, int spaces
)
4878 struct type
*descriptive_type
= TYPE_DESCRIPTIVE_TYPE (type
);
4880 if (descriptive_type
== NULL
)
4881 printfi_filtered (spaces
+ 2, "no descriptive type\n");
4884 printfi_filtered (spaces
+ 2, "descriptive type\n");
4885 recursive_dump_type (descriptive_type
, spaces
+ 4);
4889 static struct obstack dont_print_type_obstack
;
4892 recursive_dump_type (struct type
*type
, int spaces
)
4897 obstack_begin (&dont_print_type_obstack
, 0);
4899 if (type
->num_fields () > 0
4900 || (HAVE_CPLUS_STRUCT (type
) && TYPE_NFN_FIELDS (type
) > 0))
4902 struct type
**first_dont_print
4903 = (struct type
**) obstack_base (&dont_print_type_obstack
);
4905 int i
= (struct type
**)
4906 obstack_next_free (&dont_print_type_obstack
) - first_dont_print
;
4910 if (type
== first_dont_print
[i
])
4912 printfi_filtered (spaces
, "type node ");
4913 gdb_print_host_address (type
, gdb_stdout
);
4914 printf_filtered (_(" <same as already seen type>\n"));
4919 obstack_ptr_grow (&dont_print_type_obstack
, type
);
4922 printfi_filtered (spaces
, "type node ");
4923 gdb_print_host_address (type
, gdb_stdout
);
4924 printf_filtered ("\n");
4925 printfi_filtered (spaces
, "name '%s' (",
4926 type
->name () ? type
->name () : "<NULL>");
4927 gdb_print_host_address (type
->name (), gdb_stdout
);
4928 printf_filtered (")\n");
4929 printfi_filtered (spaces
, "code 0x%x ", type
->code ());
4930 switch (type
->code ())
4932 case TYPE_CODE_UNDEF
:
4933 printf_filtered ("(TYPE_CODE_UNDEF)");
4936 printf_filtered ("(TYPE_CODE_PTR)");
4938 case TYPE_CODE_ARRAY
:
4939 printf_filtered ("(TYPE_CODE_ARRAY)");
4941 case TYPE_CODE_STRUCT
:
4942 printf_filtered ("(TYPE_CODE_STRUCT)");
4944 case TYPE_CODE_UNION
:
4945 printf_filtered ("(TYPE_CODE_UNION)");
4947 case TYPE_CODE_ENUM
:
4948 printf_filtered ("(TYPE_CODE_ENUM)");
4950 case TYPE_CODE_FLAGS
:
4951 printf_filtered ("(TYPE_CODE_FLAGS)");
4953 case TYPE_CODE_FUNC
:
4954 printf_filtered ("(TYPE_CODE_FUNC)");
4957 printf_filtered ("(TYPE_CODE_INT)");
4960 printf_filtered ("(TYPE_CODE_FLT)");
4962 case TYPE_CODE_VOID
:
4963 printf_filtered ("(TYPE_CODE_VOID)");
4966 printf_filtered ("(TYPE_CODE_SET)");
4968 case TYPE_CODE_RANGE
:
4969 printf_filtered ("(TYPE_CODE_RANGE)");
4971 case TYPE_CODE_STRING
:
4972 printf_filtered ("(TYPE_CODE_STRING)");
4974 case TYPE_CODE_ERROR
:
4975 printf_filtered ("(TYPE_CODE_ERROR)");
4977 case TYPE_CODE_MEMBERPTR
:
4978 printf_filtered ("(TYPE_CODE_MEMBERPTR)");
4980 case TYPE_CODE_METHODPTR
:
4981 printf_filtered ("(TYPE_CODE_METHODPTR)");
4983 case TYPE_CODE_METHOD
:
4984 printf_filtered ("(TYPE_CODE_METHOD)");
4987 printf_filtered ("(TYPE_CODE_REF)");
4989 case TYPE_CODE_CHAR
:
4990 printf_filtered ("(TYPE_CODE_CHAR)");
4992 case TYPE_CODE_BOOL
:
4993 printf_filtered ("(TYPE_CODE_BOOL)");
4995 case TYPE_CODE_COMPLEX
:
4996 printf_filtered ("(TYPE_CODE_COMPLEX)");
4998 case TYPE_CODE_TYPEDEF
:
4999 printf_filtered ("(TYPE_CODE_TYPEDEF)");
5001 case TYPE_CODE_NAMESPACE
:
5002 printf_filtered ("(TYPE_CODE_NAMESPACE)");
5005 printf_filtered ("(UNKNOWN TYPE CODE)");
5008 puts_filtered ("\n");
5009 printfi_filtered (spaces
, "length %s\n", pulongest (TYPE_LENGTH (type
)));
5010 if (TYPE_OBJFILE_OWNED (type
))
5012 printfi_filtered (spaces
, "objfile ");
5013 gdb_print_host_address (TYPE_OWNER (type
).objfile
, gdb_stdout
);
5017 printfi_filtered (spaces
, "gdbarch ");
5018 gdb_print_host_address (TYPE_OWNER (type
).gdbarch
, gdb_stdout
);
5020 printf_filtered ("\n");
5021 printfi_filtered (spaces
, "target_type ");
5022 gdb_print_host_address (TYPE_TARGET_TYPE (type
), gdb_stdout
);
5023 printf_filtered ("\n");
5024 if (TYPE_TARGET_TYPE (type
) != NULL
)
5026 recursive_dump_type (TYPE_TARGET_TYPE (type
), spaces
+ 2);
5028 printfi_filtered (spaces
, "pointer_type ");
5029 gdb_print_host_address (TYPE_POINTER_TYPE (type
), gdb_stdout
);
5030 printf_filtered ("\n");
5031 printfi_filtered (spaces
, "reference_type ");
5032 gdb_print_host_address (TYPE_REFERENCE_TYPE (type
), gdb_stdout
);
5033 printf_filtered ("\n");
5034 printfi_filtered (spaces
, "type_chain ");
5035 gdb_print_host_address (TYPE_CHAIN (type
), gdb_stdout
);
5036 printf_filtered ("\n");
5037 printfi_filtered (spaces
, "instance_flags 0x%x",
5038 TYPE_INSTANCE_FLAGS (type
));
5039 if (TYPE_CONST (type
))
5041 puts_filtered (" TYPE_CONST");
5043 if (TYPE_VOLATILE (type
))
5045 puts_filtered (" TYPE_VOLATILE");
5047 if (TYPE_CODE_SPACE (type
))
5049 puts_filtered (" TYPE_CODE_SPACE");
5051 if (TYPE_DATA_SPACE (type
))
5053 puts_filtered (" TYPE_DATA_SPACE");
5055 if (TYPE_ADDRESS_CLASS_1 (type
))
5057 puts_filtered (" TYPE_ADDRESS_CLASS_1");
5059 if (TYPE_ADDRESS_CLASS_2 (type
))
5061 puts_filtered (" TYPE_ADDRESS_CLASS_2");
5063 if (TYPE_RESTRICT (type
))
5065 puts_filtered (" TYPE_RESTRICT");
5067 if (TYPE_ATOMIC (type
))
5069 puts_filtered (" TYPE_ATOMIC");
5071 puts_filtered ("\n");
5073 printfi_filtered (spaces
, "flags");
5074 if (TYPE_UNSIGNED (type
))
5076 puts_filtered (" TYPE_UNSIGNED");
5078 if (TYPE_NOSIGN (type
))
5080 puts_filtered (" TYPE_NOSIGN");
5082 if (TYPE_ENDIANITY_NOT_DEFAULT (type
))
5084 puts_filtered (" TYPE_ENDIANITY_NOT_DEFAULT");
5086 if (TYPE_STUB (type
))
5088 puts_filtered (" TYPE_STUB");
5090 if (TYPE_TARGET_STUB (type
))
5092 puts_filtered (" TYPE_TARGET_STUB");
5094 if (TYPE_PROTOTYPED (type
))
5096 puts_filtered (" TYPE_PROTOTYPED");
5098 if (TYPE_VARARGS (type
))
5100 puts_filtered (" TYPE_VARARGS");
5102 /* This is used for things like AltiVec registers on ppc. Gcc emits
5103 an attribute for the array type, which tells whether or not we
5104 have a vector, instead of a regular array. */
5105 if (TYPE_VECTOR (type
))
5107 puts_filtered (" TYPE_VECTOR");
5109 if (TYPE_FIXED_INSTANCE (type
))
5111 puts_filtered (" TYPE_FIXED_INSTANCE");
5113 if (TYPE_STUB_SUPPORTED (type
))
5115 puts_filtered (" TYPE_STUB_SUPPORTED");
5117 if (TYPE_NOTTEXT (type
))
5119 puts_filtered (" TYPE_NOTTEXT");
5121 puts_filtered ("\n");
5122 printfi_filtered (spaces
, "nfields %d ", type
->num_fields ());
5123 gdb_print_host_address (type
->fields (), gdb_stdout
);
5124 puts_filtered ("\n");
5125 for (idx
= 0; idx
< type
->num_fields (); idx
++)
5127 if (type
->code () == TYPE_CODE_ENUM
)
5128 printfi_filtered (spaces
+ 2,
5129 "[%d] enumval %s type ",
5130 idx
, plongest (TYPE_FIELD_ENUMVAL (type
, idx
)));
5132 printfi_filtered (spaces
+ 2,
5133 "[%d] bitpos %s bitsize %d type ",
5134 idx
, plongest (TYPE_FIELD_BITPOS (type
, idx
)),
5135 TYPE_FIELD_BITSIZE (type
, idx
));
5136 gdb_print_host_address (type
->field (idx
).type (), gdb_stdout
);
5137 printf_filtered (" name '%s' (",
5138 TYPE_FIELD_NAME (type
, idx
) != NULL
5139 ? TYPE_FIELD_NAME (type
, idx
)
5141 gdb_print_host_address (TYPE_FIELD_NAME (type
, idx
), gdb_stdout
);
5142 printf_filtered (")\n");
5143 if (type
->field (idx
).type () != NULL
)
5145 recursive_dump_type (type
->field (idx
).type (), spaces
+ 4);
5148 if (type
->code () == TYPE_CODE_RANGE
)
5150 printfi_filtered (spaces
, "low %s%s high %s%s\n",
5151 plongest (TYPE_LOW_BOUND (type
)),
5152 TYPE_LOW_BOUND_UNDEFINED (type
) ? " (undefined)" : "",
5153 plongest (TYPE_HIGH_BOUND (type
)),
5154 TYPE_HIGH_BOUND_UNDEFINED (type
)
5155 ? " (undefined)" : "");
5158 switch (TYPE_SPECIFIC_FIELD (type
))
5160 case TYPE_SPECIFIC_CPLUS_STUFF
:
5161 printfi_filtered (spaces
, "cplus_stuff ");
5162 gdb_print_host_address (TYPE_CPLUS_SPECIFIC (type
),
5164 puts_filtered ("\n");
5165 print_cplus_stuff (type
, spaces
);
5168 case TYPE_SPECIFIC_GNAT_STUFF
:
5169 printfi_filtered (spaces
, "gnat_stuff ");
5170 gdb_print_host_address (TYPE_GNAT_SPECIFIC (type
), gdb_stdout
);
5171 puts_filtered ("\n");
5172 print_gnat_stuff (type
, spaces
);
5175 case TYPE_SPECIFIC_FLOATFORMAT
:
5176 printfi_filtered (spaces
, "floatformat ");
5177 if (TYPE_FLOATFORMAT (type
) == NULL
5178 || TYPE_FLOATFORMAT (type
)->name
== NULL
)
5179 puts_filtered ("(null)");
5181 puts_filtered (TYPE_FLOATFORMAT (type
)->name
);
5182 puts_filtered ("\n");
5185 case TYPE_SPECIFIC_FUNC
:
5186 printfi_filtered (spaces
, "calling_convention %d\n",
5187 TYPE_CALLING_CONVENTION (type
));
5188 /* tail_call_list is not printed. */
5191 case TYPE_SPECIFIC_SELF_TYPE
:
5192 printfi_filtered (spaces
, "self_type ");
5193 gdb_print_host_address (TYPE_SELF_TYPE (type
), gdb_stdout
);
5194 puts_filtered ("\n");
5199 obstack_free (&dont_print_type_obstack
, NULL
);
5202 /* Trivial helpers for the libiberty hash table, for mapping one
5205 struct type_pair
: public allocate_on_obstack
5207 type_pair (struct type
*old_
, struct type
*newobj_
)
5208 : old (old_
), newobj (newobj_
)
5211 struct type
* const old
, * const newobj
;
5215 type_pair_hash (const void *item
)
5217 const struct type_pair
*pair
= (const struct type_pair
*) item
;
5219 return htab_hash_pointer (pair
->old
);
5223 type_pair_eq (const void *item_lhs
, const void *item_rhs
)
5225 const struct type_pair
*lhs
= (const struct type_pair
*) item_lhs
;
5226 const struct type_pair
*rhs
= (const struct type_pair
*) item_rhs
;
5228 return lhs
->old
== rhs
->old
;
5231 /* Allocate the hash table used by copy_type_recursive to walk
5232 types without duplicates. We use OBJFILE's obstack, because
5233 OBJFILE is about to be deleted. */
5236 create_copied_types_hash (struct objfile
*objfile
)
5238 return htab_create_alloc_ex (1, type_pair_hash
, type_pair_eq
,
5239 NULL
, &objfile
->objfile_obstack
,
5240 hashtab_obstack_allocate
,
5241 dummy_obstack_deallocate
);
5244 /* Recursively copy (deep copy) a dynamic attribute list of a type. */
5246 static struct dynamic_prop_list
*
5247 copy_dynamic_prop_list (struct obstack
*objfile_obstack
,
5248 struct dynamic_prop_list
*list
)
5250 struct dynamic_prop_list
*copy
= list
;
5251 struct dynamic_prop_list
**node_ptr
= ©
;
5253 while (*node_ptr
!= NULL
)
5255 struct dynamic_prop_list
*node_copy
;
5257 node_copy
= ((struct dynamic_prop_list
*)
5258 obstack_copy (objfile_obstack
, *node_ptr
,
5259 sizeof (struct dynamic_prop_list
)));
5260 node_copy
->prop
= (*node_ptr
)->prop
;
5261 *node_ptr
= node_copy
;
5263 node_ptr
= &node_copy
->next
;
5269 /* Recursively copy (deep copy) TYPE, if it is associated with
5270 OBJFILE. Return a new type owned by the gdbarch associated with the type, a
5271 saved type if we have already visited TYPE (using COPIED_TYPES), or TYPE if
5272 it is not associated with OBJFILE. */
5275 copy_type_recursive (struct objfile
*objfile
,
5277 htab_t copied_types
)
5280 struct type
*new_type
;
5282 if (! TYPE_OBJFILE_OWNED (type
))
5285 /* This type shouldn't be pointing to any types in other objfiles;
5286 if it did, the type might disappear unexpectedly. */
5287 gdb_assert (TYPE_OBJFILE (type
) == objfile
);
5289 struct type_pair
pair (type
, nullptr);
5291 slot
= htab_find_slot (copied_types
, &pair
, INSERT
);
5293 return ((struct type_pair
*) *slot
)->newobj
;
5295 new_type
= alloc_type_arch (get_type_arch (type
));
5297 /* We must add the new type to the hash table immediately, in case
5298 we encounter this type again during a recursive call below. */
5299 struct type_pair
*stored
5300 = new (&objfile
->objfile_obstack
) struct type_pair (type
, new_type
);
5304 /* Copy the common fields of types. For the main type, we simply
5305 copy the entire thing and then update specific fields as needed. */
5306 *TYPE_MAIN_TYPE (new_type
) = *TYPE_MAIN_TYPE (type
);
5307 TYPE_OBJFILE_OWNED (new_type
) = 0;
5308 TYPE_OWNER (new_type
).gdbarch
= get_type_arch (type
);
5311 new_type
->set_name (xstrdup (type
->name ()));
5313 TYPE_INSTANCE_FLAGS (new_type
) = TYPE_INSTANCE_FLAGS (type
);
5314 TYPE_LENGTH (new_type
) = TYPE_LENGTH (type
);
5316 /* Copy the fields. */
5317 if (type
->num_fields ())
5321 nfields
= type
->num_fields ();
5322 new_type
->set_fields
5324 TYPE_ZALLOC (new_type
, nfields
* sizeof (struct field
)));
5326 for (i
= 0; i
< nfields
; i
++)
5328 TYPE_FIELD_ARTIFICIAL (new_type
, i
) =
5329 TYPE_FIELD_ARTIFICIAL (type
, i
);
5330 TYPE_FIELD_BITSIZE (new_type
, i
) = TYPE_FIELD_BITSIZE (type
, i
);
5331 if (type
->field (i
).type ())
5332 new_type
->field (i
).set_type
5333 (copy_type_recursive (objfile
, type
->field (i
).type (),
5335 if (TYPE_FIELD_NAME (type
, i
))
5336 TYPE_FIELD_NAME (new_type
, i
) =
5337 xstrdup (TYPE_FIELD_NAME (type
, i
));
5338 switch (TYPE_FIELD_LOC_KIND (type
, i
))
5340 case FIELD_LOC_KIND_BITPOS
:
5341 SET_FIELD_BITPOS (new_type
->field (i
),
5342 TYPE_FIELD_BITPOS (type
, i
));
5344 case FIELD_LOC_KIND_ENUMVAL
:
5345 SET_FIELD_ENUMVAL (new_type
->field (i
),
5346 TYPE_FIELD_ENUMVAL (type
, i
));
5348 case FIELD_LOC_KIND_PHYSADDR
:
5349 SET_FIELD_PHYSADDR (new_type
->field (i
),
5350 TYPE_FIELD_STATIC_PHYSADDR (type
, i
));
5352 case FIELD_LOC_KIND_PHYSNAME
:
5353 SET_FIELD_PHYSNAME (new_type
->field (i
),
5354 xstrdup (TYPE_FIELD_STATIC_PHYSNAME (type
,
5358 internal_error (__FILE__
, __LINE__
,
5359 _("Unexpected type field location kind: %d"),
5360 TYPE_FIELD_LOC_KIND (type
, i
));
5365 /* For range types, copy the bounds information. */
5366 if (type
->code () == TYPE_CODE_RANGE
)
5368 range_bounds
*bounds
5369 = ((struct range_bounds
*) TYPE_ALLOC
5370 (new_type
, sizeof (struct range_bounds
)));
5372 *bounds
= *type
->bounds ();
5373 new_type
->set_bounds (bounds
);
5376 if (type
->main_type
->dyn_prop_list
!= NULL
)
5377 new_type
->main_type
->dyn_prop_list
5378 = copy_dynamic_prop_list (&objfile
->objfile_obstack
,
5379 type
->main_type
->dyn_prop_list
);
5382 /* Copy pointers to other types. */
5383 if (TYPE_TARGET_TYPE (type
))
5384 TYPE_TARGET_TYPE (new_type
) =
5385 copy_type_recursive (objfile
,
5386 TYPE_TARGET_TYPE (type
),
5389 /* Maybe copy the type_specific bits.
5391 NOTE drow/2005-12-09: We do not copy the C++-specific bits like
5392 base classes and methods. There's no fundamental reason why we
5393 can't, but at the moment it is not needed. */
5395 switch (TYPE_SPECIFIC_FIELD (type
))
5397 case TYPE_SPECIFIC_NONE
:
5399 case TYPE_SPECIFIC_FUNC
:
5400 INIT_FUNC_SPECIFIC (new_type
);
5401 TYPE_CALLING_CONVENTION (new_type
) = TYPE_CALLING_CONVENTION (type
);
5402 TYPE_NO_RETURN (new_type
) = TYPE_NO_RETURN (type
);
5403 TYPE_TAIL_CALL_LIST (new_type
) = NULL
;
5405 case TYPE_SPECIFIC_FLOATFORMAT
:
5406 TYPE_FLOATFORMAT (new_type
) = TYPE_FLOATFORMAT (type
);
5408 case TYPE_SPECIFIC_CPLUS_STUFF
:
5409 INIT_CPLUS_SPECIFIC (new_type
);
5411 case TYPE_SPECIFIC_GNAT_STUFF
:
5412 INIT_GNAT_SPECIFIC (new_type
);
5414 case TYPE_SPECIFIC_SELF_TYPE
:
5415 set_type_self_type (new_type
,
5416 copy_type_recursive (objfile
, TYPE_SELF_TYPE (type
),
5420 gdb_assert_not_reached ("bad type_specific_kind");
5426 /* Make a copy of the given TYPE, except that the pointer & reference
5427 types are not preserved.
5429 This function assumes that the given type has an associated objfile.
5430 This objfile is used to allocate the new type. */
5433 copy_type (const struct type
*type
)
5435 struct type
*new_type
;
5437 gdb_assert (TYPE_OBJFILE_OWNED (type
));
5439 new_type
= alloc_type_copy (type
);
5440 TYPE_INSTANCE_FLAGS (new_type
) = TYPE_INSTANCE_FLAGS (type
);
5441 TYPE_LENGTH (new_type
) = TYPE_LENGTH (type
);
5442 memcpy (TYPE_MAIN_TYPE (new_type
), TYPE_MAIN_TYPE (type
),
5443 sizeof (struct main_type
));
5444 if (type
->main_type
->dyn_prop_list
!= NULL
)
5445 new_type
->main_type
->dyn_prop_list
5446 = copy_dynamic_prop_list (&TYPE_OBJFILE (type
) -> objfile_obstack
,
5447 type
->main_type
->dyn_prop_list
);
5452 /* Helper functions to initialize architecture-specific types. */
5454 /* Allocate a type structure associated with GDBARCH and set its
5455 CODE, LENGTH, and NAME fields. */
5458 arch_type (struct gdbarch
*gdbarch
,
5459 enum type_code code
, int bit
, const char *name
)
5463 type
= alloc_type_arch (gdbarch
);
5464 set_type_code (type
, code
);
5465 gdb_assert ((bit
% TARGET_CHAR_BIT
) == 0);
5466 TYPE_LENGTH (type
) = bit
/ TARGET_CHAR_BIT
;
5469 type
->set_name (gdbarch_obstack_strdup (gdbarch
, name
));
5474 /* Allocate a TYPE_CODE_INT type structure associated with GDBARCH.
5475 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
5476 the type's TYPE_UNSIGNED flag. NAME is the type name. */
5479 arch_integer_type (struct gdbarch
*gdbarch
,
5480 int bit
, int unsigned_p
, const char *name
)
5484 t
= arch_type (gdbarch
, TYPE_CODE_INT
, bit
, name
);
5486 TYPE_UNSIGNED (t
) = 1;
5491 /* Allocate a TYPE_CODE_CHAR type structure associated with GDBARCH.
5492 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
5493 the type's TYPE_UNSIGNED flag. NAME is the type name. */
5496 arch_character_type (struct gdbarch
*gdbarch
,
5497 int bit
, int unsigned_p
, const char *name
)
5501 t
= arch_type (gdbarch
, TYPE_CODE_CHAR
, bit
, name
);
5503 TYPE_UNSIGNED (t
) = 1;
5508 /* Allocate a TYPE_CODE_BOOL type structure associated with GDBARCH.
5509 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
5510 the type's TYPE_UNSIGNED flag. NAME is the type name. */
5513 arch_boolean_type (struct gdbarch
*gdbarch
,
5514 int bit
, int unsigned_p
, const char *name
)
5518 t
= arch_type (gdbarch
, TYPE_CODE_BOOL
, bit
, name
);
5520 TYPE_UNSIGNED (t
) = 1;
5525 /* Allocate a TYPE_CODE_FLT type structure associated with GDBARCH.
5526 BIT is the type size in bits; if BIT equals -1, the size is
5527 determined by the floatformat. NAME is the type name. Set the
5528 TYPE_FLOATFORMAT from FLOATFORMATS. */
5531 arch_float_type (struct gdbarch
*gdbarch
,
5532 int bit
, const char *name
,
5533 const struct floatformat
**floatformats
)
5535 const struct floatformat
*fmt
= floatformats
[gdbarch_byte_order (gdbarch
)];
5538 bit
= verify_floatformat (bit
, fmt
);
5539 t
= arch_type (gdbarch
, TYPE_CODE_FLT
, bit
, name
);
5540 TYPE_FLOATFORMAT (t
) = fmt
;
5545 /* Allocate a TYPE_CODE_DECFLOAT type structure associated with GDBARCH.
5546 BIT is the type size in bits. NAME is the type name. */
5549 arch_decfloat_type (struct gdbarch
*gdbarch
, int bit
, const char *name
)
5553 t
= arch_type (gdbarch
, TYPE_CODE_DECFLOAT
, bit
, name
);
5557 /* Allocate a TYPE_CODE_PTR type structure associated with GDBARCH.
5558 BIT is the pointer type size in bits. NAME is the type name.
5559 TARGET_TYPE is the pointer target type. Always sets the pointer type's
5560 TYPE_UNSIGNED flag. */
5563 arch_pointer_type (struct gdbarch
*gdbarch
,
5564 int bit
, const char *name
, struct type
*target_type
)
5568 t
= arch_type (gdbarch
, TYPE_CODE_PTR
, bit
, name
);
5569 TYPE_TARGET_TYPE (t
) = target_type
;
5570 TYPE_UNSIGNED (t
) = 1;
5574 /* Allocate a TYPE_CODE_FLAGS type structure associated with GDBARCH.
5575 NAME is the type name. BIT is the size of the flag word in bits. */
5578 arch_flags_type (struct gdbarch
*gdbarch
, const char *name
, int bit
)
5582 type
= arch_type (gdbarch
, TYPE_CODE_FLAGS
, bit
, name
);
5583 TYPE_UNSIGNED (type
) = 1;
5584 type
->set_num_fields (0);
5585 /* Pre-allocate enough space assuming every field is one bit. */
5587 ((struct field
*) TYPE_ZALLOC (type
, bit
* sizeof (struct field
)));
5592 /* Add field to TYPE_CODE_FLAGS type TYPE to indicate the bit at
5593 position BITPOS is called NAME. Pass NAME as "" for fields that
5594 should not be printed. */
5597 append_flags_type_field (struct type
*type
, int start_bitpos
, int nr_bits
,
5598 struct type
*field_type
, const char *name
)
5600 int type_bitsize
= TYPE_LENGTH (type
) * TARGET_CHAR_BIT
;
5601 int field_nr
= type
->num_fields ();
5603 gdb_assert (type
->code () == TYPE_CODE_FLAGS
);
5604 gdb_assert (type
->num_fields () + 1 <= type_bitsize
);
5605 gdb_assert (start_bitpos
>= 0 && start_bitpos
< type_bitsize
);
5606 gdb_assert (nr_bits
>= 1 && nr_bits
<= type_bitsize
);
5607 gdb_assert (name
!= NULL
);
5609 TYPE_FIELD_NAME (type
, field_nr
) = xstrdup (name
);
5610 type
->field (field_nr
).set_type (field_type
);
5611 SET_FIELD_BITPOS (type
->field (field_nr
), start_bitpos
);
5612 TYPE_FIELD_BITSIZE (type
, field_nr
) = nr_bits
;
5613 type
->set_num_fields (type
->num_fields () + 1);
5616 /* Special version of append_flags_type_field to add a flag field.
5617 Add field to TYPE_CODE_FLAGS type TYPE to indicate the bit at
5618 position BITPOS is called NAME. */
5621 append_flags_type_flag (struct type
*type
, int bitpos
, const char *name
)
5623 struct gdbarch
*gdbarch
= get_type_arch (type
);
5625 append_flags_type_field (type
, bitpos
, 1,
5626 builtin_type (gdbarch
)->builtin_bool
,
5630 /* Allocate a TYPE_CODE_STRUCT or TYPE_CODE_UNION type structure (as
5631 specified by CODE) associated with GDBARCH. NAME is the type name. */
5634 arch_composite_type (struct gdbarch
*gdbarch
, const char *name
,
5635 enum type_code code
)
5639 gdb_assert (code
== TYPE_CODE_STRUCT
|| code
== TYPE_CODE_UNION
);
5640 t
= arch_type (gdbarch
, code
, 0, NULL
);
5642 INIT_CPLUS_SPECIFIC (t
);
5646 /* Add new field with name NAME and type FIELD to composite type T.
5647 Do not set the field's position or adjust the type's length;
5648 the caller should do so. Return the new field. */
5651 append_composite_type_field_raw (struct type
*t
, const char *name
,
5656 t
->set_num_fields (t
->num_fields () + 1);
5657 t
->set_fields (XRESIZEVEC (struct field
, t
->fields (),
5659 f
= &t
->field (t
->num_fields () - 1);
5660 memset (f
, 0, sizeof f
[0]);
5661 f
[0].set_type (field
);
5662 FIELD_NAME (f
[0]) = name
;
5666 /* Add new field with name NAME and type FIELD to composite type T.
5667 ALIGNMENT (if non-zero) specifies the minimum field alignment. */
5670 append_composite_type_field_aligned (struct type
*t
, const char *name
,
5671 struct type
*field
, int alignment
)
5673 struct field
*f
= append_composite_type_field_raw (t
, name
, field
);
5675 if (t
->code () == TYPE_CODE_UNION
)
5677 if (TYPE_LENGTH (t
) < TYPE_LENGTH (field
))
5678 TYPE_LENGTH (t
) = TYPE_LENGTH (field
);
5680 else if (t
->code () == TYPE_CODE_STRUCT
)
5682 TYPE_LENGTH (t
) = TYPE_LENGTH (t
) + TYPE_LENGTH (field
);
5683 if (t
->num_fields () > 1)
5685 SET_FIELD_BITPOS (f
[0],
5686 (FIELD_BITPOS (f
[-1])
5687 + (TYPE_LENGTH (f
[-1].type ())
5688 * TARGET_CHAR_BIT
)));
5694 alignment
*= TARGET_CHAR_BIT
;
5695 left
= FIELD_BITPOS (f
[0]) % alignment
;
5699 SET_FIELD_BITPOS (f
[0], FIELD_BITPOS (f
[0]) + (alignment
- left
));
5700 TYPE_LENGTH (t
) += (alignment
- left
) / TARGET_CHAR_BIT
;
5707 /* Add new field with name NAME and type FIELD to composite type T. */
5710 append_composite_type_field (struct type
*t
, const char *name
,
5713 append_composite_type_field_aligned (t
, name
, field
, 0);
5716 static struct gdbarch_data
*gdbtypes_data
;
5718 const struct builtin_type
*
5719 builtin_type (struct gdbarch
*gdbarch
)
5721 return (const struct builtin_type
*) gdbarch_data (gdbarch
, gdbtypes_data
);
5725 gdbtypes_post_init (struct gdbarch
*gdbarch
)
5727 struct builtin_type
*builtin_type
5728 = GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct builtin_type
);
5731 builtin_type
->builtin_void
5732 = arch_type (gdbarch
, TYPE_CODE_VOID
, TARGET_CHAR_BIT
, "void");
5733 builtin_type
->builtin_char
5734 = arch_integer_type (gdbarch
, TARGET_CHAR_BIT
,
5735 !gdbarch_char_signed (gdbarch
), "char");
5736 TYPE_NOSIGN (builtin_type
->builtin_char
) = 1;
5737 builtin_type
->builtin_signed_char
5738 = arch_integer_type (gdbarch
, TARGET_CHAR_BIT
,
5740 builtin_type
->builtin_unsigned_char
5741 = arch_integer_type (gdbarch
, TARGET_CHAR_BIT
,
5742 1, "unsigned char");
5743 builtin_type
->builtin_short
5744 = arch_integer_type (gdbarch
, gdbarch_short_bit (gdbarch
),
5746 builtin_type
->builtin_unsigned_short
5747 = arch_integer_type (gdbarch
, gdbarch_short_bit (gdbarch
),
5748 1, "unsigned short");
5749 builtin_type
->builtin_int
5750 = arch_integer_type (gdbarch
, gdbarch_int_bit (gdbarch
),
5752 builtin_type
->builtin_unsigned_int
5753 = arch_integer_type (gdbarch
, gdbarch_int_bit (gdbarch
),
5755 builtin_type
->builtin_long
5756 = arch_integer_type (gdbarch
, gdbarch_long_bit (gdbarch
),
5758 builtin_type
->builtin_unsigned_long
5759 = arch_integer_type (gdbarch
, gdbarch_long_bit (gdbarch
),
5760 1, "unsigned long");
5761 builtin_type
->builtin_long_long
5762 = arch_integer_type (gdbarch
, gdbarch_long_long_bit (gdbarch
),
5764 builtin_type
->builtin_unsigned_long_long
5765 = arch_integer_type (gdbarch
, gdbarch_long_long_bit (gdbarch
),
5766 1, "unsigned long long");
5767 builtin_type
->builtin_half
5768 = arch_float_type (gdbarch
, gdbarch_half_bit (gdbarch
),
5769 "half", gdbarch_half_format (gdbarch
));
5770 builtin_type
->builtin_float
5771 = arch_float_type (gdbarch
, gdbarch_float_bit (gdbarch
),
5772 "float", gdbarch_float_format (gdbarch
));
5773 builtin_type
->builtin_double
5774 = arch_float_type (gdbarch
, gdbarch_double_bit (gdbarch
),
5775 "double", gdbarch_double_format (gdbarch
));
5776 builtin_type
->builtin_long_double
5777 = arch_float_type (gdbarch
, gdbarch_long_double_bit (gdbarch
),
5778 "long double", gdbarch_long_double_format (gdbarch
));
5779 builtin_type
->builtin_complex
5780 = init_complex_type ("complex", builtin_type
->builtin_float
);
5781 builtin_type
->builtin_double_complex
5782 = init_complex_type ("double complex", builtin_type
->builtin_double
);
5783 builtin_type
->builtin_string
5784 = arch_type (gdbarch
, TYPE_CODE_STRING
, TARGET_CHAR_BIT
, "string");
5785 builtin_type
->builtin_bool
5786 = arch_type (gdbarch
, TYPE_CODE_BOOL
, TARGET_CHAR_BIT
, "bool");
5788 /* The following three are about decimal floating point types, which
5789 are 32-bits, 64-bits and 128-bits respectively. */
5790 builtin_type
->builtin_decfloat
5791 = arch_decfloat_type (gdbarch
, 32, "_Decimal32");
5792 builtin_type
->builtin_decdouble
5793 = arch_decfloat_type (gdbarch
, 64, "_Decimal64");
5794 builtin_type
->builtin_declong
5795 = arch_decfloat_type (gdbarch
, 128, "_Decimal128");
5797 /* "True" character types. */
5798 builtin_type
->builtin_true_char
5799 = arch_character_type (gdbarch
, TARGET_CHAR_BIT
, 0, "true character");
5800 builtin_type
->builtin_true_unsigned_char
5801 = arch_character_type (gdbarch
, TARGET_CHAR_BIT
, 1, "true character");
5803 /* Fixed-size integer types. */
5804 builtin_type
->builtin_int0
5805 = arch_integer_type (gdbarch
, 0, 0, "int0_t");
5806 builtin_type
->builtin_int8
5807 = arch_integer_type (gdbarch
, 8, 0, "int8_t");
5808 builtin_type
->builtin_uint8
5809 = arch_integer_type (gdbarch
, 8, 1, "uint8_t");
5810 builtin_type
->builtin_int16
5811 = arch_integer_type (gdbarch
, 16, 0, "int16_t");
5812 builtin_type
->builtin_uint16
5813 = arch_integer_type (gdbarch
, 16, 1, "uint16_t");
5814 builtin_type
->builtin_int24
5815 = arch_integer_type (gdbarch
, 24, 0, "int24_t");
5816 builtin_type
->builtin_uint24
5817 = arch_integer_type (gdbarch
, 24, 1, "uint24_t");
5818 builtin_type
->builtin_int32
5819 = arch_integer_type (gdbarch
, 32, 0, "int32_t");
5820 builtin_type
->builtin_uint32
5821 = arch_integer_type (gdbarch
, 32, 1, "uint32_t");
5822 builtin_type
->builtin_int64
5823 = arch_integer_type (gdbarch
, 64, 0, "int64_t");
5824 builtin_type
->builtin_uint64
5825 = arch_integer_type (gdbarch
, 64, 1, "uint64_t");
5826 builtin_type
->builtin_int128
5827 = arch_integer_type (gdbarch
, 128, 0, "int128_t");
5828 builtin_type
->builtin_uint128
5829 = arch_integer_type (gdbarch
, 128, 1, "uint128_t");
5830 TYPE_INSTANCE_FLAGS (builtin_type
->builtin_int8
) |=
5831 TYPE_INSTANCE_FLAG_NOTTEXT
;
5832 TYPE_INSTANCE_FLAGS (builtin_type
->builtin_uint8
) |=
5833 TYPE_INSTANCE_FLAG_NOTTEXT
;
5835 /* Wide character types. */
5836 builtin_type
->builtin_char16
5837 = arch_integer_type (gdbarch
, 16, 1, "char16_t");
5838 builtin_type
->builtin_char32
5839 = arch_integer_type (gdbarch
, 32, 1, "char32_t");
5840 builtin_type
->builtin_wchar
5841 = arch_integer_type (gdbarch
, gdbarch_wchar_bit (gdbarch
),
5842 !gdbarch_wchar_signed (gdbarch
), "wchar_t");
5844 /* Default data/code pointer types. */
5845 builtin_type
->builtin_data_ptr
5846 = lookup_pointer_type (builtin_type
->builtin_void
);
5847 builtin_type
->builtin_func_ptr
5848 = lookup_pointer_type (lookup_function_type (builtin_type
->builtin_void
));
5849 builtin_type
->builtin_func_func
5850 = lookup_function_type (builtin_type
->builtin_func_ptr
);
5852 /* This type represents a GDB internal function. */
5853 builtin_type
->internal_fn
5854 = arch_type (gdbarch
, TYPE_CODE_INTERNAL_FUNCTION
, 0,
5855 "<internal function>");
5857 /* This type represents an xmethod. */
5858 builtin_type
->xmethod
5859 = arch_type (gdbarch
, TYPE_CODE_XMETHOD
, 0, "<xmethod>");
5861 return builtin_type
;
5864 /* This set of objfile-based types is intended to be used by symbol
5865 readers as basic types. */
5867 static const struct objfile_key
<struct objfile_type
,
5868 gdb::noop_deleter
<struct objfile_type
>>
5871 const struct objfile_type
*
5872 objfile_type (struct objfile
*objfile
)
5874 struct gdbarch
*gdbarch
;
5875 struct objfile_type
*objfile_type
= objfile_type_data
.get (objfile
);
5878 return objfile_type
;
5880 objfile_type
= OBSTACK_CALLOC (&objfile
->objfile_obstack
,
5881 1, struct objfile_type
);
5883 /* Use the objfile architecture to determine basic type properties. */
5884 gdbarch
= objfile
->arch ();
5887 objfile_type
->builtin_void
5888 = init_type (objfile
, TYPE_CODE_VOID
, TARGET_CHAR_BIT
, "void");
5889 objfile_type
->builtin_char
5890 = init_integer_type (objfile
, TARGET_CHAR_BIT
,
5891 !gdbarch_char_signed (gdbarch
), "char");
5892 TYPE_NOSIGN (objfile_type
->builtin_char
) = 1;
5893 objfile_type
->builtin_signed_char
5894 = init_integer_type (objfile
, TARGET_CHAR_BIT
,
5896 objfile_type
->builtin_unsigned_char
5897 = init_integer_type (objfile
, TARGET_CHAR_BIT
,
5898 1, "unsigned char");
5899 objfile_type
->builtin_short
5900 = init_integer_type (objfile
, gdbarch_short_bit (gdbarch
),
5902 objfile_type
->builtin_unsigned_short
5903 = init_integer_type (objfile
, gdbarch_short_bit (gdbarch
),
5904 1, "unsigned short");
5905 objfile_type
->builtin_int
5906 = init_integer_type (objfile
, gdbarch_int_bit (gdbarch
),
5908 objfile_type
->builtin_unsigned_int
5909 = init_integer_type (objfile
, gdbarch_int_bit (gdbarch
),
5911 objfile_type
->builtin_long
5912 = init_integer_type (objfile
, gdbarch_long_bit (gdbarch
),
5914 objfile_type
->builtin_unsigned_long
5915 = init_integer_type (objfile
, gdbarch_long_bit (gdbarch
),
5916 1, "unsigned long");
5917 objfile_type
->builtin_long_long
5918 = init_integer_type (objfile
, gdbarch_long_long_bit (gdbarch
),
5920 objfile_type
->builtin_unsigned_long_long
5921 = init_integer_type (objfile
, gdbarch_long_long_bit (gdbarch
),
5922 1, "unsigned long long");
5923 objfile_type
->builtin_float
5924 = init_float_type (objfile
, gdbarch_float_bit (gdbarch
),
5925 "float", gdbarch_float_format (gdbarch
));
5926 objfile_type
->builtin_double
5927 = init_float_type (objfile
, gdbarch_double_bit (gdbarch
),
5928 "double", gdbarch_double_format (gdbarch
));
5929 objfile_type
->builtin_long_double
5930 = init_float_type (objfile
, gdbarch_long_double_bit (gdbarch
),
5931 "long double", gdbarch_long_double_format (gdbarch
));
5933 /* This type represents a type that was unrecognized in symbol read-in. */
5934 objfile_type
->builtin_error
5935 = init_type (objfile
, TYPE_CODE_ERROR
, 0, "<unknown type>");
5937 /* The following set of types is used for symbols with no
5938 debug information. */
5939 objfile_type
->nodebug_text_symbol
5940 = init_type (objfile
, TYPE_CODE_FUNC
, TARGET_CHAR_BIT
,
5941 "<text variable, no debug info>");
5942 objfile_type
->nodebug_text_gnu_ifunc_symbol
5943 = init_type (objfile
, TYPE_CODE_FUNC
, TARGET_CHAR_BIT
,
5944 "<text gnu-indirect-function variable, no debug info>");
5945 TYPE_GNU_IFUNC (objfile_type
->nodebug_text_gnu_ifunc_symbol
) = 1;
5946 objfile_type
->nodebug_got_plt_symbol
5947 = init_pointer_type (objfile
, gdbarch_addr_bit (gdbarch
),
5948 "<text from jump slot in .got.plt, no debug info>",
5949 objfile_type
->nodebug_text_symbol
);
5950 objfile_type
->nodebug_data_symbol
5951 = init_nodebug_var_type (objfile
, "<data variable, no debug info>");
5952 objfile_type
->nodebug_unknown_symbol
5953 = init_nodebug_var_type (objfile
, "<variable (not text or data), no debug info>");
5954 objfile_type
->nodebug_tls_symbol
5955 = init_nodebug_var_type (objfile
, "<thread local variable, no debug info>");
5957 /* NOTE: on some targets, addresses and pointers are not necessarily
5961 - gdb's `struct type' always describes the target's
5963 - gdb's `struct value' objects should always hold values in
5965 - gdb's CORE_ADDR values are addresses in the unified virtual
5966 address space that the assembler and linker work with. Thus,
5967 since target_read_memory takes a CORE_ADDR as an argument, it
5968 can access any memory on the target, even if the processor has
5969 separate code and data address spaces.
5971 In this context, objfile_type->builtin_core_addr is a bit odd:
5972 it's a target type for a value the target will never see. It's
5973 only used to hold the values of (typeless) linker symbols, which
5974 are indeed in the unified virtual address space. */
5976 objfile_type
->builtin_core_addr
5977 = init_integer_type (objfile
, gdbarch_addr_bit (gdbarch
), 1,
5980 objfile_type_data
.set (objfile
, objfile_type
);
5981 return objfile_type
;
5984 void _initialize_gdbtypes ();
5986 _initialize_gdbtypes ()
5988 gdbtypes_data
= gdbarch_data_register_post_init (gdbtypes_post_init
);
5990 add_setshow_zuinteger_cmd ("overload", no_class
, &overload_debug
,
5991 _("Set debugging of C++ overloading."),
5992 _("Show debugging of C++ overloading."),
5993 _("When enabled, ranking of the "
5994 "functions is displayed."),
5996 show_overload_debug
,
5997 &setdebuglist
, &showdebuglist
);
5999 /* Add user knob for controlling resolution of opaque types. */
6000 add_setshow_boolean_cmd ("opaque-type-resolution", class_support
,
6001 &opaque_type_resolution
,
6002 _("Set resolution of opaque struct/class/union"
6003 " types (if set before loading symbols)."),
6004 _("Show resolution of opaque struct/class/union"
6005 " types (if set before loading symbols)."),
6007 show_opaque_type_resolution
,
6008 &setlist
, &showlist
);
6010 /* Add an option to permit non-strict type checking. */
6011 add_setshow_boolean_cmd ("type", class_support
,
6012 &strict_type_checking
,
6013 _("Set strict type checking."),
6014 _("Show strict type checking."),
6016 show_strict_type_checking
,
6017 &setchecklist
, &showchecklist
);