1 /* Support routines for manipulating internal types for GDB.
3 Copyright (C) 1992-2020 Free Software Foundation, Inc.
5 Contributed by Cygnus Support, using pieces from other GDB modules.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
28 #include "expression.h"
33 #include "complaints.h"
37 #include "cp-support.h"
39 #include "dwarf2/loc.h"
41 #include "floatformat.h"
44 /* Initialize BADNESS constants. */
46 const struct rank LENGTH_MISMATCH_BADNESS
= {100,0};
48 const struct rank TOO_FEW_PARAMS_BADNESS
= {100,0};
49 const struct rank INCOMPATIBLE_TYPE_BADNESS
= {100,0};
51 const struct rank EXACT_MATCH_BADNESS
= {0,0};
53 const struct rank INTEGER_PROMOTION_BADNESS
= {1,0};
54 const struct rank FLOAT_PROMOTION_BADNESS
= {1,0};
55 const struct rank BASE_PTR_CONVERSION_BADNESS
= {1,0};
56 const struct rank CV_CONVERSION_BADNESS
= {1, 0};
57 const struct rank INTEGER_CONVERSION_BADNESS
= {2,0};
58 const struct rank FLOAT_CONVERSION_BADNESS
= {2,0};
59 const struct rank INT_FLOAT_CONVERSION_BADNESS
= {2,0};
60 const struct rank VOID_PTR_CONVERSION_BADNESS
= {2,0};
61 const struct rank BOOL_CONVERSION_BADNESS
= {3,0};
62 const struct rank BASE_CONVERSION_BADNESS
= {2,0};
63 const struct rank REFERENCE_CONVERSION_BADNESS
= {2,0};
64 const struct rank REFERENCE_SEE_THROUGH_BADNESS
= {0,1};
65 const struct rank NULL_POINTER_CONVERSION_BADNESS
= {2,0};
66 const struct rank NS_POINTER_CONVERSION_BADNESS
= {10,0};
67 const struct rank NS_INTEGER_POINTER_CONVERSION_BADNESS
= {3,0};
69 /* Floatformat pairs. */
70 const struct floatformat
*floatformats_ieee_half
[BFD_ENDIAN_UNKNOWN
] = {
71 &floatformat_ieee_half_big
,
72 &floatformat_ieee_half_little
74 const struct floatformat
*floatformats_ieee_single
[BFD_ENDIAN_UNKNOWN
] = {
75 &floatformat_ieee_single_big
,
76 &floatformat_ieee_single_little
78 const struct floatformat
*floatformats_ieee_double
[BFD_ENDIAN_UNKNOWN
] = {
79 &floatformat_ieee_double_big
,
80 &floatformat_ieee_double_little
82 const struct floatformat
*floatformats_ieee_double_littlebyte_bigword
[BFD_ENDIAN_UNKNOWN
] = {
83 &floatformat_ieee_double_big
,
84 &floatformat_ieee_double_littlebyte_bigword
86 const struct floatformat
*floatformats_i387_ext
[BFD_ENDIAN_UNKNOWN
] = {
87 &floatformat_i387_ext
,
90 const struct floatformat
*floatformats_m68881_ext
[BFD_ENDIAN_UNKNOWN
] = {
91 &floatformat_m68881_ext
,
92 &floatformat_m68881_ext
94 const struct floatformat
*floatformats_arm_ext
[BFD_ENDIAN_UNKNOWN
] = {
95 &floatformat_arm_ext_big
,
96 &floatformat_arm_ext_littlebyte_bigword
98 const struct floatformat
*floatformats_ia64_spill
[BFD_ENDIAN_UNKNOWN
] = {
99 &floatformat_ia64_spill_big
,
100 &floatformat_ia64_spill_little
102 const struct floatformat
*floatformats_ia64_quad
[BFD_ENDIAN_UNKNOWN
] = {
103 &floatformat_ia64_quad_big
,
104 &floatformat_ia64_quad_little
106 const struct floatformat
*floatformats_vax_f
[BFD_ENDIAN_UNKNOWN
] = {
110 const struct floatformat
*floatformats_vax_d
[BFD_ENDIAN_UNKNOWN
] = {
114 const struct floatformat
*floatformats_ibm_long_double
[BFD_ENDIAN_UNKNOWN
] = {
115 &floatformat_ibm_long_double_big
,
116 &floatformat_ibm_long_double_little
119 /* Should opaque types be resolved? */
121 static bool opaque_type_resolution
= true;
123 /* See gdbtypes.h. */
125 unsigned int overload_debug
= 0;
127 /* A flag to enable strict type checking. */
129 static bool strict_type_checking
= true;
131 /* A function to show whether opaque types are resolved. */
134 show_opaque_type_resolution (struct ui_file
*file
, int from_tty
,
135 struct cmd_list_element
*c
,
138 fprintf_filtered (file
, _("Resolution of opaque struct/class/union types "
139 "(if set before loading symbols) is %s.\n"),
143 /* A function to show whether C++ overload debugging is enabled. */
146 show_overload_debug (struct ui_file
*file
, int from_tty
,
147 struct cmd_list_element
*c
, const char *value
)
149 fprintf_filtered (file
, _("Debugging of C++ overloading is %s.\n"),
153 /* A function to show the status of strict type checking. */
156 show_strict_type_checking (struct ui_file
*file
, int from_tty
,
157 struct cmd_list_element
*c
, const char *value
)
159 fprintf_filtered (file
, _("Strict type checking is %s.\n"), value
);
163 /* Allocate a new OBJFILE-associated type structure and fill it
164 with some defaults. Space for the type structure is allocated
165 on the objfile's objfile_obstack. */
168 alloc_type (struct objfile
*objfile
)
172 gdb_assert (objfile
!= NULL
);
174 /* Alloc the structure and start off with all fields zeroed. */
175 type
= OBSTACK_ZALLOC (&objfile
->objfile_obstack
, struct type
);
176 TYPE_MAIN_TYPE (type
) = OBSTACK_ZALLOC (&objfile
->objfile_obstack
,
178 OBJSTAT (objfile
, n_types
++);
180 TYPE_OBJFILE_OWNED (type
) = 1;
181 TYPE_OWNER (type
).objfile
= objfile
;
183 /* Initialize the fields that might not be zero. */
185 TYPE_CODE (type
) = TYPE_CODE_UNDEF
;
186 TYPE_CHAIN (type
) = type
; /* Chain back to itself. */
191 /* Allocate a new GDBARCH-associated type structure and fill it
192 with some defaults. Space for the type structure is allocated
193 on the obstack associated with GDBARCH. */
196 alloc_type_arch (struct gdbarch
*gdbarch
)
200 gdb_assert (gdbarch
!= NULL
);
202 /* Alloc the structure and start off with all fields zeroed. */
204 type
= GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct type
);
205 TYPE_MAIN_TYPE (type
) = GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct main_type
);
207 TYPE_OBJFILE_OWNED (type
) = 0;
208 TYPE_OWNER (type
).gdbarch
= gdbarch
;
210 /* Initialize the fields that might not be zero. */
212 TYPE_CODE (type
) = TYPE_CODE_UNDEF
;
213 TYPE_CHAIN (type
) = type
; /* Chain back to itself. */
218 /* If TYPE is objfile-associated, allocate a new type structure
219 associated with the same objfile. If TYPE is gdbarch-associated,
220 allocate a new type structure associated with the same gdbarch. */
223 alloc_type_copy (const struct type
*type
)
225 if (TYPE_OBJFILE_OWNED (type
))
226 return alloc_type (TYPE_OWNER (type
).objfile
);
228 return alloc_type_arch (TYPE_OWNER (type
).gdbarch
);
231 /* If TYPE is gdbarch-associated, return that architecture.
232 If TYPE is objfile-associated, return that objfile's architecture. */
235 get_type_arch (const struct type
*type
)
237 struct gdbarch
*arch
;
239 if (TYPE_OBJFILE_OWNED (type
))
240 arch
= TYPE_OWNER (type
).objfile
->arch ();
242 arch
= TYPE_OWNER (type
).gdbarch
;
244 /* The ARCH can be NULL if TYPE is associated with neither an objfile nor
245 a gdbarch, however, this is very rare, and even then, in most cases
246 that get_type_arch is called, we assume that a non-NULL value is
248 gdb_assert (arch
!= NULL
);
252 /* See gdbtypes.h. */
255 get_target_type (struct type
*type
)
259 type
= TYPE_TARGET_TYPE (type
);
261 type
= check_typedef (type
);
267 /* See gdbtypes.h. */
270 type_length_units (struct type
*type
)
272 struct gdbarch
*arch
= get_type_arch (type
);
273 int unit_size
= gdbarch_addressable_memory_unit_size (arch
);
275 return TYPE_LENGTH (type
) / unit_size
;
278 /* Alloc a new type instance structure, fill it with some defaults,
279 and point it at OLDTYPE. Allocate the new type instance from the
280 same place as OLDTYPE. */
283 alloc_type_instance (struct type
*oldtype
)
287 /* Allocate the structure. */
289 if (! TYPE_OBJFILE_OWNED (oldtype
))
290 type
= GDBARCH_OBSTACK_ZALLOC (get_type_arch (oldtype
), struct type
);
292 type
= OBSTACK_ZALLOC (&TYPE_OBJFILE (oldtype
)->objfile_obstack
,
295 TYPE_MAIN_TYPE (type
) = TYPE_MAIN_TYPE (oldtype
);
297 TYPE_CHAIN (type
) = type
; /* Chain back to itself for now. */
302 /* Clear all remnants of the previous type at TYPE, in preparation for
303 replacing it with something else. Preserve owner information. */
306 smash_type (struct type
*type
)
308 int objfile_owned
= TYPE_OBJFILE_OWNED (type
);
309 union type_owner owner
= TYPE_OWNER (type
);
311 memset (TYPE_MAIN_TYPE (type
), 0, sizeof (struct main_type
));
313 /* Restore owner information. */
314 TYPE_OBJFILE_OWNED (type
) = objfile_owned
;
315 TYPE_OWNER (type
) = owner
;
317 /* For now, delete the rings. */
318 TYPE_CHAIN (type
) = type
;
320 /* For now, leave the pointer/reference types alone. */
323 /* Lookup a pointer to a type TYPE. TYPEPTR, if nonzero, points
324 to a pointer to memory where the pointer type should be stored.
325 If *TYPEPTR is zero, update it to point to the pointer type we return.
326 We allocate new memory if needed. */
329 make_pointer_type (struct type
*type
, struct type
**typeptr
)
331 struct type
*ntype
; /* New type */
334 ntype
= TYPE_POINTER_TYPE (type
);
339 return ntype
; /* Don't care about alloc,
340 and have new type. */
341 else if (*typeptr
== 0)
343 *typeptr
= ntype
; /* Tracking alloc, and have new type. */
348 if (typeptr
== 0 || *typeptr
== 0) /* We'll need to allocate one. */
350 ntype
= alloc_type_copy (type
);
354 else /* We have storage, but need to reset it. */
357 chain
= TYPE_CHAIN (ntype
);
359 TYPE_CHAIN (ntype
) = chain
;
362 TYPE_TARGET_TYPE (ntype
) = type
;
363 TYPE_POINTER_TYPE (type
) = ntype
;
365 /* FIXME! Assumes the machine has only one representation for pointers! */
368 = gdbarch_ptr_bit (get_type_arch (type
)) / TARGET_CHAR_BIT
;
369 TYPE_CODE (ntype
) = TYPE_CODE_PTR
;
371 /* Mark pointers as unsigned. The target converts between pointers
372 and addresses (CORE_ADDRs) using gdbarch_pointer_to_address and
373 gdbarch_address_to_pointer. */
374 TYPE_UNSIGNED (ntype
) = 1;
376 /* Update the length of all the other variants of this type. */
377 chain
= TYPE_CHAIN (ntype
);
378 while (chain
!= ntype
)
380 TYPE_LENGTH (chain
) = TYPE_LENGTH (ntype
);
381 chain
= TYPE_CHAIN (chain
);
387 /* Given a type TYPE, return a type of pointers to that type.
388 May need to construct such a type if this is the first use. */
391 lookup_pointer_type (struct type
*type
)
393 return make_pointer_type (type
, (struct type
**) 0);
396 /* Lookup a C++ `reference' to a type TYPE. TYPEPTR, if nonzero,
397 points to a pointer to memory where the reference type should be
398 stored. If *TYPEPTR is zero, update it to point to the reference
399 type we return. We allocate new memory if needed. REFCODE denotes
400 the kind of reference type to lookup (lvalue or rvalue reference). */
403 make_reference_type (struct type
*type
, struct type
**typeptr
,
404 enum type_code refcode
)
406 struct type
*ntype
; /* New type */
407 struct type
**reftype
;
410 gdb_assert (refcode
== TYPE_CODE_REF
|| refcode
== TYPE_CODE_RVALUE_REF
);
412 ntype
= (refcode
== TYPE_CODE_REF
? TYPE_REFERENCE_TYPE (type
)
413 : TYPE_RVALUE_REFERENCE_TYPE (type
));
418 return ntype
; /* Don't care about alloc,
419 and have new type. */
420 else if (*typeptr
== 0)
422 *typeptr
= ntype
; /* Tracking alloc, and have new type. */
427 if (typeptr
== 0 || *typeptr
== 0) /* We'll need to allocate one. */
429 ntype
= alloc_type_copy (type
);
433 else /* We have storage, but need to reset it. */
436 chain
= TYPE_CHAIN (ntype
);
438 TYPE_CHAIN (ntype
) = chain
;
441 TYPE_TARGET_TYPE (ntype
) = type
;
442 reftype
= (refcode
== TYPE_CODE_REF
? &TYPE_REFERENCE_TYPE (type
)
443 : &TYPE_RVALUE_REFERENCE_TYPE (type
));
447 /* FIXME! Assume the machine has only one representation for
448 references, and that it matches the (only) representation for
451 TYPE_LENGTH (ntype
) =
452 gdbarch_ptr_bit (get_type_arch (type
)) / TARGET_CHAR_BIT
;
453 TYPE_CODE (ntype
) = refcode
;
457 /* Update the length of all the other variants of this type. */
458 chain
= TYPE_CHAIN (ntype
);
459 while (chain
!= ntype
)
461 TYPE_LENGTH (chain
) = TYPE_LENGTH (ntype
);
462 chain
= TYPE_CHAIN (chain
);
468 /* Same as above, but caller doesn't care about memory allocation
472 lookup_reference_type (struct type
*type
, enum type_code refcode
)
474 return make_reference_type (type
, (struct type
**) 0, refcode
);
477 /* Lookup the lvalue reference type for the type TYPE. */
480 lookup_lvalue_reference_type (struct type
*type
)
482 return lookup_reference_type (type
, TYPE_CODE_REF
);
485 /* Lookup the rvalue reference type for the type TYPE. */
488 lookup_rvalue_reference_type (struct type
*type
)
490 return lookup_reference_type (type
, TYPE_CODE_RVALUE_REF
);
493 /* Lookup a function type that returns type TYPE. TYPEPTR, if
494 nonzero, points to a pointer to memory where the function type
495 should be stored. If *TYPEPTR is zero, update it to point to the
496 function type we return. We allocate new memory if needed. */
499 make_function_type (struct type
*type
, struct type
**typeptr
)
501 struct type
*ntype
; /* New type */
503 if (typeptr
== 0 || *typeptr
== 0) /* We'll need to allocate one. */
505 ntype
= alloc_type_copy (type
);
509 else /* We have storage, but need to reset it. */
515 TYPE_TARGET_TYPE (ntype
) = type
;
517 TYPE_LENGTH (ntype
) = 1;
518 TYPE_CODE (ntype
) = TYPE_CODE_FUNC
;
520 INIT_FUNC_SPECIFIC (ntype
);
525 /* Given a type TYPE, return a type of functions that return that type.
526 May need to construct such a type if this is the first use. */
529 lookup_function_type (struct type
*type
)
531 return make_function_type (type
, (struct type
**) 0);
534 /* Given a type TYPE and argument types, return the appropriate
535 function type. If the final type in PARAM_TYPES is NULL, make a
539 lookup_function_type_with_arguments (struct type
*type
,
541 struct type
**param_types
)
543 struct type
*fn
= make_function_type (type
, (struct type
**) 0);
548 if (param_types
[nparams
- 1] == NULL
)
551 TYPE_VARARGS (fn
) = 1;
553 else if (TYPE_CODE (check_typedef (param_types
[nparams
- 1]))
557 /* Caller should have ensured this. */
558 gdb_assert (nparams
== 0);
559 TYPE_PROTOTYPED (fn
) = 1;
562 TYPE_PROTOTYPED (fn
) = 1;
565 TYPE_NFIELDS (fn
) = nparams
;
567 = (struct field
*) TYPE_ZALLOC (fn
, nparams
* sizeof (struct field
));
568 for (i
= 0; i
< nparams
; ++i
)
569 TYPE_FIELD_TYPE (fn
, i
) = param_types
[i
];
574 /* Identify address space identifier by name --
575 return the integer flag defined in gdbtypes.h. */
578 address_space_name_to_int (struct gdbarch
*gdbarch
,
579 const char *space_identifier
)
583 /* Check for known address space delimiters. */
584 if (!strcmp (space_identifier
, "code"))
585 return TYPE_INSTANCE_FLAG_CODE_SPACE
;
586 else if (!strcmp (space_identifier
, "data"))
587 return TYPE_INSTANCE_FLAG_DATA_SPACE
;
588 else if (gdbarch_address_class_name_to_type_flags_p (gdbarch
)
589 && gdbarch_address_class_name_to_type_flags (gdbarch
,
594 error (_("Unknown address space specifier: \"%s\""), space_identifier
);
597 /* Identify address space identifier by integer flag as defined in
598 gdbtypes.h -- return the string version of the adress space name. */
601 address_space_int_to_name (struct gdbarch
*gdbarch
, int space_flag
)
603 if (space_flag
& TYPE_INSTANCE_FLAG_CODE_SPACE
)
605 else if (space_flag
& TYPE_INSTANCE_FLAG_DATA_SPACE
)
607 else if ((space_flag
& TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL
)
608 && gdbarch_address_class_type_flags_to_name_p (gdbarch
))
609 return gdbarch_address_class_type_flags_to_name (gdbarch
, space_flag
);
614 /* Create a new type with instance flags NEW_FLAGS, based on TYPE.
616 If STORAGE is non-NULL, create the new type instance there.
617 STORAGE must be in the same obstack as TYPE. */
620 make_qualified_type (struct type
*type
, int new_flags
,
621 struct type
*storage
)
628 if (TYPE_INSTANCE_FLAGS (ntype
) == new_flags
)
630 ntype
= TYPE_CHAIN (ntype
);
632 while (ntype
!= type
);
634 /* Create a new type instance. */
636 ntype
= alloc_type_instance (type
);
639 /* If STORAGE was provided, it had better be in the same objfile
640 as TYPE. Otherwise, we can't link it into TYPE's cv chain:
641 if one objfile is freed and the other kept, we'd have
642 dangling pointers. */
643 gdb_assert (TYPE_OBJFILE (type
) == TYPE_OBJFILE (storage
));
646 TYPE_MAIN_TYPE (ntype
) = TYPE_MAIN_TYPE (type
);
647 TYPE_CHAIN (ntype
) = ntype
;
650 /* Pointers or references to the original type are not relevant to
652 TYPE_POINTER_TYPE (ntype
) = (struct type
*) 0;
653 TYPE_REFERENCE_TYPE (ntype
) = (struct type
*) 0;
655 /* Chain the new qualified type to the old type. */
656 TYPE_CHAIN (ntype
) = TYPE_CHAIN (type
);
657 TYPE_CHAIN (type
) = ntype
;
659 /* Now set the instance flags and return the new type. */
660 TYPE_INSTANCE_FLAGS (ntype
) = new_flags
;
662 /* Set length of new type to that of the original type. */
663 TYPE_LENGTH (ntype
) = TYPE_LENGTH (type
);
668 /* Make an address-space-delimited variant of a type -- a type that
669 is identical to the one supplied except that it has an address
670 space attribute attached to it (such as "code" or "data").
672 The space attributes "code" and "data" are for Harvard
673 architectures. The address space attributes are for architectures
674 which have alternately sized pointers or pointers with alternate
678 make_type_with_address_space (struct type
*type
, int space_flag
)
680 int new_flags
= ((TYPE_INSTANCE_FLAGS (type
)
681 & ~(TYPE_INSTANCE_FLAG_CODE_SPACE
682 | TYPE_INSTANCE_FLAG_DATA_SPACE
683 | TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL
))
686 return make_qualified_type (type
, new_flags
, NULL
);
689 /* Make a "c-v" variant of a type -- a type that is identical to the
690 one supplied except that it may have const or volatile attributes
691 CNST is a flag for setting the const attribute
692 VOLTL is a flag for setting the volatile attribute
693 TYPE is the base type whose variant we are creating.
695 If TYPEPTR and *TYPEPTR are non-zero, then *TYPEPTR points to
696 storage to hold the new qualified type; *TYPEPTR and TYPE must be
697 in the same objfile. Otherwise, allocate fresh memory for the new
698 type whereever TYPE lives. If TYPEPTR is non-zero, set it to the
699 new type we construct. */
702 make_cv_type (int cnst
, int voltl
,
704 struct type
**typeptr
)
706 struct type
*ntype
; /* New type */
708 int new_flags
= (TYPE_INSTANCE_FLAGS (type
)
709 & ~(TYPE_INSTANCE_FLAG_CONST
710 | TYPE_INSTANCE_FLAG_VOLATILE
));
713 new_flags
|= TYPE_INSTANCE_FLAG_CONST
;
716 new_flags
|= TYPE_INSTANCE_FLAG_VOLATILE
;
718 if (typeptr
&& *typeptr
!= NULL
)
720 /* TYPE and *TYPEPTR must be in the same objfile. We can't have
721 a C-V variant chain that threads across objfiles: if one
722 objfile gets freed, then the other has a broken C-V chain.
724 This code used to try to copy over the main type from TYPE to
725 *TYPEPTR if they were in different objfiles, but that's
726 wrong, too: TYPE may have a field list or member function
727 lists, which refer to types of their own, etc. etc. The
728 whole shebang would need to be copied over recursively; you
729 can't have inter-objfile pointers. The only thing to do is
730 to leave stub types as stub types, and look them up afresh by
731 name each time you encounter them. */
732 gdb_assert (TYPE_OBJFILE (*typeptr
) == TYPE_OBJFILE (type
));
735 ntype
= make_qualified_type (type
, new_flags
,
736 typeptr
? *typeptr
: NULL
);
744 /* Make a 'restrict'-qualified version of TYPE. */
747 make_restrict_type (struct type
*type
)
749 return make_qualified_type (type
,
750 (TYPE_INSTANCE_FLAGS (type
)
751 | TYPE_INSTANCE_FLAG_RESTRICT
),
755 /* Make a type without const, volatile, or restrict. */
758 make_unqualified_type (struct type
*type
)
760 return make_qualified_type (type
,
761 (TYPE_INSTANCE_FLAGS (type
)
762 & ~(TYPE_INSTANCE_FLAG_CONST
763 | TYPE_INSTANCE_FLAG_VOLATILE
764 | TYPE_INSTANCE_FLAG_RESTRICT
)),
768 /* Make a '_Atomic'-qualified version of TYPE. */
771 make_atomic_type (struct type
*type
)
773 return make_qualified_type (type
,
774 (TYPE_INSTANCE_FLAGS (type
)
775 | TYPE_INSTANCE_FLAG_ATOMIC
),
779 /* Replace the contents of ntype with the type *type. This changes the
780 contents, rather than the pointer for TYPE_MAIN_TYPE (ntype); thus
781 the changes are propogated to all types in the TYPE_CHAIN.
783 In order to build recursive types, it's inevitable that we'll need
784 to update types in place --- but this sort of indiscriminate
785 smashing is ugly, and needs to be replaced with something more
786 controlled. TYPE_MAIN_TYPE is a step in this direction; it's not
787 clear if more steps are needed. */
790 replace_type (struct type
*ntype
, struct type
*type
)
794 /* These two types had better be in the same objfile. Otherwise,
795 the assignment of one type's main type structure to the other
796 will produce a type with references to objects (names; field
797 lists; etc.) allocated on an objfile other than its own. */
798 gdb_assert (TYPE_OBJFILE (ntype
) == TYPE_OBJFILE (type
));
800 *TYPE_MAIN_TYPE (ntype
) = *TYPE_MAIN_TYPE (type
);
802 /* The type length is not a part of the main type. Update it for
803 each type on the variant chain. */
807 /* Assert that this element of the chain has no address-class bits
808 set in its flags. Such type variants might have type lengths
809 which are supposed to be different from the non-address-class
810 variants. This assertion shouldn't ever be triggered because
811 symbol readers which do construct address-class variants don't
812 call replace_type(). */
813 gdb_assert (TYPE_ADDRESS_CLASS_ALL (chain
) == 0);
815 TYPE_LENGTH (chain
) = TYPE_LENGTH (type
);
816 chain
= TYPE_CHAIN (chain
);
818 while (ntype
!= chain
);
820 /* Assert that the two types have equivalent instance qualifiers.
821 This should be true for at least all of our debug readers. */
822 gdb_assert (TYPE_INSTANCE_FLAGS (ntype
) == TYPE_INSTANCE_FLAGS (type
));
825 /* Implement direct support for MEMBER_TYPE in GNU C++.
826 May need to construct such a type if this is the first use.
827 The TYPE is the type of the member. The DOMAIN is the type
828 of the aggregate that the member belongs to. */
831 lookup_memberptr_type (struct type
*type
, struct type
*domain
)
835 mtype
= alloc_type_copy (type
);
836 smash_to_memberptr_type (mtype
, domain
, type
);
840 /* Return a pointer-to-method type, for a method of type TO_TYPE. */
843 lookup_methodptr_type (struct type
*to_type
)
847 mtype
= alloc_type_copy (to_type
);
848 smash_to_methodptr_type (mtype
, to_type
);
852 /* Allocate a stub method whose return type is TYPE. This apparently
853 happens for speed of symbol reading, since parsing out the
854 arguments to the method is cpu-intensive, the way we are doing it.
855 So, we will fill in arguments later. This always returns a fresh
859 allocate_stub_method (struct type
*type
)
863 mtype
= alloc_type_copy (type
);
864 TYPE_CODE (mtype
) = TYPE_CODE_METHOD
;
865 TYPE_LENGTH (mtype
) = 1;
866 TYPE_STUB (mtype
) = 1;
867 TYPE_TARGET_TYPE (mtype
) = type
;
868 /* TYPE_SELF_TYPE (mtype) = unknown yet */
872 /* See gdbtypes.h. */
875 operator== (const dynamic_prop
&l
, const dynamic_prop
&r
)
877 if (l
.kind
!= r
.kind
)
885 return l
.data
.const_val
== r
.data
.const_val
;
886 case PROP_ADDR_OFFSET
:
889 return l
.data
.baton
== r
.data
.baton
;
890 case PROP_VARIANT_PARTS
:
891 return l
.data
.variant_parts
== r
.data
.variant_parts
;
893 return l
.data
.original_type
== r
.data
.original_type
;
896 gdb_assert_not_reached ("unhandled dynamic_prop kind");
899 /* See gdbtypes.h. */
902 operator== (const range_bounds
&l
, const range_bounds
&r
)
904 #define FIELD_EQ(FIELD) (l.FIELD == r.FIELD)
906 return (FIELD_EQ (low
)
908 && FIELD_EQ (flag_upper_bound_is_count
)
909 && FIELD_EQ (flag_bound_evaluated
)
915 /* Create a range type with a dynamic range from LOW_BOUND to
916 HIGH_BOUND, inclusive. See create_range_type for further details. */
919 create_range_type (struct type
*result_type
, struct type
*index_type
,
920 const struct dynamic_prop
*low_bound
,
921 const struct dynamic_prop
*high_bound
,
924 /* The INDEX_TYPE should be a type capable of holding the upper and lower
925 bounds, as such a zero sized, or void type makes no sense. */
926 gdb_assert (TYPE_CODE (index_type
) != TYPE_CODE_VOID
);
927 gdb_assert (TYPE_LENGTH (index_type
) > 0);
929 if (result_type
== NULL
)
930 result_type
= alloc_type_copy (index_type
);
931 TYPE_CODE (result_type
) = TYPE_CODE_RANGE
;
932 TYPE_TARGET_TYPE (result_type
) = index_type
;
933 if (TYPE_STUB (index_type
))
934 TYPE_TARGET_STUB (result_type
) = 1;
936 TYPE_LENGTH (result_type
) = TYPE_LENGTH (check_typedef (index_type
));
938 TYPE_RANGE_DATA (result_type
) = (struct range_bounds
*)
939 TYPE_ZALLOC (result_type
, sizeof (struct range_bounds
));
940 TYPE_RANGE_DATA (result_type
)->low
= *low_bound
;
941 TYPE_RANGE_DATA (result_type
)->high
= *high_bound
;
942 TYPE_RANGE_DATA (result_type
)->bias
= bias
;
944 /* Initialize the stride to be a constant, the value will already be zero
945 thanks to the use of TYPE_ZALLOC above. */
946 TYPE_RANGE_DATA (result_type
)->stride
.kind
= PROP_CONST
;
948 if (low_bound
->kind
== PROP_CONST
&& low_bound
->data
.const_val
>= 0)
949 TYPE_UNSIGNED (result_type
) = 1;
951 /* Ada allows the declaration of range types whose upper bound is
952 less than the lower bound, so checking the lower bound is not
953 enough. Make sure we do not mark a range type whose upper bound
954 is negative as unsigned. */
955 if (high_bound
->kind
== PROP_CONST
&& high_bound
->data
.const_val
< 0)
956 TYPE_UNSIGNED (result_type
) = 0;
958 TYPE_ENDIANITY_NOT_DEFAULT (result_type
)
959 = TYPE_ENDIANITY_NOT_DEFAULT (index_type
);
964 /* See gdbtypes.h. */
967 create_range_type_with_stride (struct type
*result_type
,
968 struct type
*index_type
,
969 const struct dynamic_prop
*low_bound
,
970 const struct dynamic_prop
*high_bound
,
972 const struct dynamic_prop
*stride
,
975 result_type
= create_range_type (result_type
, index_type
, low_bound
,
978 gdb_assert (stride
!= nullptr);
979 TYPE_RANGE_DATA (result_type
)->stride
= *stride
;
980 TYPE_RANGE_DATA (result_type
)->flag_is_byte_stride
= byte_stride_p
;
987 /* Create a range type using either a blank type supplied in
988 RESULT_TYPE, or creating a new type, inheriting the objfile from
991 Indices will be of type INDEX_TYPE, and will range from LOW_BOUND
992 to HIGH_BOUND, inclusive.
994 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
995 sure it is TYPE_CODE_UNDEF before we bash it into a range type? */
998 create_static_range_type (struct type
*result_type
, struct type
*index_type
,
999 LONGEST low_bound
, LONGEST high_bound
)
1001 struct dynamic_prop low
, high
;
1003 low
.kind
= PROP_CONST
;
1004 low
.data
.const_val
= low_bound
;
1006 high
.kind
= PROP_CONST
;
1007 high
.data
.const_val
= high_bound
;
1009 result_type
= create_range_type (result_type
, index_type
, &low
, &high
, 0);
1014 /* Predicate tests whether BOUNDS are static. Returns 1 if all bounds values
1015 are static, otherwise returns 0. */
1018 has_static_range (const struct range_bounds
*bounds
)
1020 /* If the range doesn't have a defined stride then its stride field will
1021 be initialized to the constant 0. */
1022 return (bounds
->low
.kind
== PROP_CONST
1023 && bounds
->high
.kind
== PROP_CONST
1024 && bounds
->stride
.kind
== PROP_CONST
);
1028 /* Set *LOWP and *HIGHP to the lower and upper bounds of discrete type
1029 TYPE. Return 1 if type is a range type, 0 if it is discrete (and
1030 bounds will fit in LONGEST), or -1 otherwise. */
1033 get_discrete_bounds (struct type
*type
, LONGEST
*lowp
, LONGEST
*highp
)
1035 type
= check_typedef (type
);
1036 switch (TYPE_CODE (type
))
1038 case TYPE_CODE_RANGE
:
1039 *lowp
= TYPE_LOW_BOUND (type
);
1040 *highp
= TYPE_HIGH_BOUND (type
);
1042 case TYPE_CODE_ENUM
:
1043 if (TYPE_NFIELDS (type
) > 0)
1045 /* The enums may not be sorted by value, so search all
1049 *lowp
= *highp
= TYPE_FIELD_ENUMVAL (type
, 0);
1050 for (i
= 0; i
< TYPE_NFIELDS (type
); i
++)
1052 if (TYPE_FIELD_ENUMVAL (type
, i
) < *lowp
)
1053 *lowp
= TYPE_FIELD_ENUMVAL (type
, i
);
1054 if (TYPE_FIELD_ENUMVAL (type
, i
) > *highp
)
1055 *highp
= TYPE_FIELD_ENUMVAL (type
, i
);
1058 /* Set unsigned indicator if warranted. */
1061 TYPE_UNSIGNED (type
) = 1;
1070 case TYPE_CODE_BOOL
:
1075 if (TYPE_LENGTH (type
) > sizeof (LONGEST
)) /* Too big */
1077 if (!TYPE_UNSIGNED (type
))
1079 *lowp
= -(1 << (TYPE_LENGTH (type
) * TARGET_CHAR_BIT
- 1));
1080 *highp
= -*lowp
- 1;
1084 case TYPE_CODE_CHAR
:
1086 /* This round-about calculation is to avoid shifting by
1087 TYPE_LENGTH (type) * TARGET_CHAR_BIT, which will not work
1088 if TYPE_LENGTH (type) == sizeof (LONGEST). */
1089 *highp
= 1 << (TYPE_LENGTH (type
) * TARGET_CHAR_BIT
- 1);
1090 *highp
= (*highp
- 1) | *highp
;
1097 /* Assuming TYPE is a simple, non-empty array type, compute its upper
1098 and lower bound. Save the low bound into LOW_BOUND if not NULL.
1099 Save the high bound into HIGH_BOUND if not NULL.
1101 Return 1 if the operation was successful. Return zero otherwise,
1102 in which case the values of LOW_BOUND and HIGH_BOUNDS are unmodified.
1104 We now simply use get_discrete_bounds call to get the values
1105 of the low and high bounds.
1106 get_discrete_bounds can return three values:
1107 1, meaning that index is a range,
1108 0, meaning that index is a discrete type,
1109 or -1 for failure. */
1112 get_array_bounds (struct type
*type
, LONGEST
*low_bound
, LONGEST
*high_bound
)
1114 struct type
*index
= TYPE_INDEX_TYPE (type
);
1122 res
= get_discrete_bounds (index
, &low
, &high
);
1126 /* Check if the array bounds are undefined. */
1128 && ((low_bound
&& TYPE_ARRAY_LOWER_BOUND_IS_UNDEFINED (type
))
1129 || (high_bound
&& TYPE_ARRAY_UPPER_BOUND_IS_UNDEFINED (type
))))
1141 /* Assuming that TYPE is a discrete type and VAL is a valid integer
1142 representation of a value of this type, save the corresponding
1143 position number in POS.
1145 Its differs from VAL only in the case of enumeration types. In
1146 this case, the position number of the value of the first listed
1147 enumeration literal is zero; the position number of the value of
1148 each subsequent enumeration literal is one more than that of its
1149 predecessor in the list.
1151 Return 1 if the operation was successful. Return zero otherwise,
1152 in which case the value of POS is unmodified.
1156 discrete_position (struct type
*type
, LONGEST val
, LONGEST
*pos
)
1158 if (TYPE_CODE (type
) == TYPE_CODE_ENUM
)
1162 for (i
= 0; i
< TYPE_NFIELDS (type
); i
+= 1)
1164 if (val
== TYPE_FIELD_ENUMVAL (type
, i
))
1170 /* Invalid enumeration value. */
1180 /* If the array TYPE has static bounds calculate and update its
1181 size, then return true. Otherwise return false and leave TYPE
1185 update_static_array_size (struct type
*type
)
1187 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_ARRAY
);
1189 struct type
*range_type
= TYPE_INDEX_TYPE (type
);
1191 if (get_dyn_prop (DYN_PROP_BYTE_STRIDE
, type
) == nullptr
1192 && has_static_range (TYPE_RANGE_DATA (range_type
))
1193 && (!type_not_associated (type
)
1194 && !type_not_allocated (type
)))
1196 LONGEST low_bound
, high_bound
;
1198 struct type
*element_type
;
1200 /* If the array itself doesn't provide a stride value then take
1201 whatever stride the range provides. Don't update BIT_STRIDE as
1202 we don't want to place the stride value from the range into this
1203 arrays bit size field. */
1204 stride
= TYPE_FIELD_BITSIZE (type
, 0);
1206 stride
= TYPE_BIT_STRIDE (range_type
);
1208 if (get_discrete_bounds (range_type
, &low_bound
, &high_bound
) < 0)
1209 low_bound
= high_bound
= 0;
1210 element_type
= check_typedef (TYPE_TARGET_TYPE (type
));
1211 /* Be careful when setting the array length. Ada arrays can be
1212 empty arrays with the high_bound being smaller than the low_bound.
1213 In such cases, the array length should be zero. */
1214 if (high_bound
< low_bound
)
1215 TYPE_LENGTH (type
) = 0;
1216 else if (stride
!= 0)
1218 /* Ensure that the type length is always positive, even in the
1219 case where (for example in Fortran) we have a negative
1220 stride. It is possible to have a single element array with a
1221 negative stride in Fortran (this doesn't mean anything
1222 special, it's still just a single element array) so do
1223 consider that case when touching this code. */
1224 LONGEST element_count
= std::abs (high_bound
- low_bound
+ 1);
1226 = ((std::abs (stride
) * element_count
) + 7) / 8;
1229 TYPE_LENGTH (type
) =
1230 TYPE_LENGTH (element_type
) * (high_bound
- low_bound
+ 1);
1238 /* Create an array type using either a blank type supplied in
1239 RESULT_TYPE, or creating a new type, inheriting the objfile from
1242 Elements will be of type ELEMENT_TYPE, the indices will be of type
1245 BYTE_STRIDE_PROP, when not NULL, provides the array's byte stride.
1246 This byte stride property is added to the resulting array type
1247 as a DYN_PROP_BYTE_STRIDE. As a consequence, the BYTE_STRIDE_PROP
1248 argument can only be used to create types that are objfile-owned
1249 (see add_dyn_prop), meaning that either this function must be called
1250 with an objfile-owned RESULT_TYPE, or an objfile-owned RANGE_TYPE.
1252 BIT_STRIDE is taken into account only when BYTE_STRIDE_PROP is NULL.
1253 If BIT_STRIDE is not zero, build a packed array type whose element
1254 size is BIT_STRIDE. Otherwise, ignore this parameter.
1256 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
1257 sure it is TYPE_CODE_UNDEF before we bash it into an array
1261 create_array_type_with_stride (struct type
*result_type
,
1262 struct type
*element_type
,
1263 struct type
*range_type
,
1264 struct dynamic_prop
*byte_stride_prop
,
1265 unsigned int bit_stride
)
1267 if (byte_stride_prop
!= NULL
1268 && byte_stride_prop
->kind
== PROP_CONST
)
1270 /* The byte stride is actually not dynamic. Pretend we were
1271 called with bit_stride set instead of byte_stride_prop.
1272 This will give us the same result type, while avoiding
1273 the need to handle this as a special case. */
1274 bit_stride
= byte_stride_prop
->data
.const_val
* 8;
1275 byte_stride_prop
= NULL
;
1278 if (result_type
== NULL
)
1279 result_type
= alloc_type_copy (range_type
);
1281 TYPE_CODE (result_type
) = TYPE_CODE_ARRAY
;
1282 TYPE_TARGET_TYPE (result_type
) = element_type
;
1284 TYPE_NFIELDS (result_type
) = 1;
1285 TYPE_FIELDS (result_type
) =
1286 (struct field
*) TYPE_ZALLOC (result_type
, sizeof (struct field
));
1287 TYPE_INDEX_TYPE (result_type
) = range_type
;
1288 if (byte_stride_prop
!= NULL
)
1289 add_dyn_prop (DYN_PROP_BYTE_STRIDE
, *byte_stride_prop
, result_type
);
1290 else if (bit_stride
> 0)
1291 TYPE_FIELD_BITSIZE (result_type
, 0) = bit_stride
;
1293 if (!update_static_array_size (result_type
))
1295 /* This type is dynamic and its length needs to be computed
1296 on demand. In the meantime, avoid leaving the TYPE_LENGTH
1297 undefined by setting it to zero. Although we are not expected
1298 to trust TYPE_LENGTH in this case, setting the size to zero
1299 allows us to avoid allocating objects of random sizes in case
1300 we accidently do. */
1301 TYPE_LENGTH (result_type
) = 0;
1304 /* TYPE_TARGET_STUB will take care of zero length arrays. */
1305 if (TYPE_LENGTH (result_type
) == 0)
1306 TYPE_TARGET_STUB (result_type
) = 1;
1311 /* Same as create_array_type_with_stride but with no bit_stride
1312 (BIT_STRIDE = 0), thus building an unpacked array. */
1315 create_array_type (struct type
*result_type
,
1316 struct type
*element_type
,
1317 struct type
*range_type
)
1319 return create_array_type_with_stride (result_type
, element_type
,
1320 range_type
, NULL
, 0);
1324 lookup_array_range_type (struct type
*element_type
,
1325 LONGEST low_bound
, LONGEST high_bound
)
1327 struct type
*index_type
;
1328 struct type
*range_type
;
1330 if (TYPE_OBJFILE_OWNED (element_type
))
1331 index_type
= objfile_type (TYPE_OWNER (element_type
).objfile
)->builtin_int
;
1333 index_type
= builtin_type (get_type_arch (element_type
))->builtin_int
;
1334 range_type
= create_static_range_type (NULL
, index_type
,
1335 low_bound
, high_bound
);
1337 return create_array_type (NULL
, element_type
, range_type
);
1340 /* Create a string type using either a blank type supplied in
1341 RESULT_TYPE, or creating a new type. String types are similar
1342 enough to array of char types that we can use create_array_type to
1343 build the basic type and then bash it into a string type.
1345 For fixed length strings, the range type contains 0 as the lower
1346 bound and the length of the string minus one as the upper bound.
1348 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
1349 sure it is TYPE_CODE_UNDEF before we bash it into a string
1353 create_string_type (struct type
*result_type
,
1354 struct type
*string_char_type
,
1355 struct type
*range_type
)
1357 result_type
= create_array_type (result_type
,
1360 TYPE_CODE (result_type
) = TYPE_CODE_STRING
;
1365 lookup_string_range_type (struct type
*string_char_type
,
1366 LONGEST low_bound
, LONGEST high_bound
)
1368 struct type
*result_type
;
1370 result_type
= lookup_array_range_type (string_char_type
,
1371 low_bound
, high_bound
);
1372 TYPE_CODE (result_type
) = TYPE_CODE_STRING
;
1377 create_set_type (struct type
*result_type
, struct type
*domain_type
)
1379 if (result_type
== NULL
)
1380 result_type
= alloc_type_copy (domain_type
);
1382 TYPE_CODE (result_type
) = TYPE_CODE_SET
;
1383 TYPE_NFIELDS (result_type
) = 1;
1384 TYPE_FIELDS (result_type
)
1385 = (struct field
*) TYPE_ZALLOC (result_type
, sizeof (struct field
));
1387 if (!TYPE_STUB (domain_type
))
1389 LONGEST low_bound
, high_bound
, bit_length
;
1391 if (get_discrete_bounds (domain_type
, &low_bound
, &high_bound
) < 0)
1392 low_bound
= high_bound
= 0;
1393 bit_length
= high_bound
- low_bound
+ 1;
1394 TYPE_LENGTH (result_type
)
1395 = (bit_length
+ TARGET_CHAR_BIT
- 1) / TARGET_CHAR_BIT
;
1397 TYPE_UNSIGNED (result_type
) = 1;
1399 TYPE_FIELD_TYPE (result_type
, 0) = domain_type
;
1404 /* Convert ARRAY_TYPE to a vector type. This may modify ARRAY_TYPE
1405 and any array types nested inside it. */
1408 make_vector_type (struct type
*array_type
)
1410 struct type
*inner_array
, *elt_type
;
1413 /* Find the innermost array type, in case the array is
1414 multi-dimensional. */
1415 inner_array
= array_type
;
1416 while (TYPE_CODE (TYPE_TARGET_TYPE (inner_array
)) == TYPE_CODE_ARRAY
)
1417 inner_array
= TYPE_TARGET_TYPE (inner_array
);
1419 elt_type
= TYPE_TARGET_TYPE (inner_array
);
1420 if (TYPE_CODE (elt_type
) == TYPE_CODE_INT
)
1422 flags
= TYPE_INSTANCE_FLAGS (elt_type
) | TYPE_INSTANCE_FLAG_NOTTEXT
;
1423 elt_type
= make_qualified_type (elt_type
, flags
, NULL
);
1424 TYPE_TARGET_TYPE (inner_array
) = elt_type
;
1427 TYPE_VECTOR (array_type
) = 1;
1431 init_vector_type (struct type
*elt_type
, int n
)
1433 struct type
*array_type
;
1435 array_type
= lookup_array_range_type (elt_type
, 0, n
- 1);
1436 make_vector_type (array_type
);
1440 /* Internal routine called by TYPE_SELF_TYPE to return the type that TYPE
1441 belongs to. In c++ this is the class of "this", but TYPE_THIS_TYPE is too
1442 confusing. "self" is a common enough replacement for "this".
1443 TYPE must be one of TYPE_CODE_METHODPTR, TYPE_CODE_MEMBERPTR, or
1444 TYPE_CODE_METHOD. */
1447 internal_type_self_type (struct type
*type
)
1449 switch (TYPE_CODE (type
))
1451 case TYPE_CODE_METHODPTR
:
1452 case TYPE_CODE_MEMBERPTR
:
1453 if (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_NONE
)
1455 gdb_assert (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_SELF_TYPE
);
1456 return TYPE_MAIN_TYPE (type
)->type_specific
.self_type
;
1457 case TYPE_CODE_METHOD
:
1458 if (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_NONE
)
1460 gdb_assert (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_FUNC
);
1461 return TYPE_MAIN_TYPE (type
)->type_specific
.func_stuff
->self_type
;
1463 gdb_assert_not_reached ("bad type");
1467 /* Set the type of the class that TYPE belongs to.
1468 In c++ this is the class of "this".
1469 TYPE must be one of TYPE_CODE_METHODPTR, TYPE_CODE_MEMBERPTR, or
1470 TYPE_CODE_METHOD. */
1473 set_type_self_type (struct type
*type
, struct type
*self_type
)
1475 switch (TYPE_CODE (type
))
1477 case TYPE_CODE_METHODPTR
:
1478 case TYPE_CODE_MEMBERPTR
:
1479 if (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_NONE
)
1480 TYPE_SPECIFIC_FIELD (type
) = TYPE_SPECIFIC_SELF_TYPE
;
1481 gdb_assert (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_SELF_TYPE
);
1482 TYPE_MAIN_TYPE (type
)->type_specific
.self_type
= self_type
;
1484 case TYPE_CODE_METHOD
:
1485 if (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_NONE
)
1486 INIT_FUNC_SPECIFIC (type
);
1487 gdb_assert (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_FUNC
);
1488 TYPE_MAIN_TYPE (type
)->type_specific
.func_stuff
->self_type
= self_type
;
1491 gdb_assert_not_reached ("bad type");
1495 /* Smash TYPE to be a type of pointers to members of SELF_TYPE with type
1496 TO_TYPE. A member pointer is a wierd thing -- it amounts to a
1497 typed offset into a struct, e.g. "an int at offset 8". A MEMBER
1498 TYPE doesn't include the offset (that's the value of the MEMBER
1499 itself), but does include the structure type into which it points
1502 When "smashing" the type, we preserve the objfile that the old type
1503 pointed to, since we aren't changing where the type is actually
1507 smash_to_memberptr_type (struct type
*type
, struct type
*self_type
,
1508 struct type
*to_type
)
1511 TYPE_CODE (type
) = TYPE_CODE_MEMBERPTR
;
1512 TYPE_TARGET_TYPE (type
) = to_type
;
1513 set_type_self_type (type
, self_type
);
1514 /* Assume that a data member pointer is the same size as a normal
1517 = gdbarch_ptr_bit (get_type_arch (to_type
)) / TARGET_CHAR_BIT
;
1520 /* Smash TYPE to be a type of pointer to methods type TO_TYPE.
1522 When "smashing" the type, we preserve the objfile that the old type
1523 pointed to, since we aren't changing where the type is actually
1527 smash_to_methodptr_type (struct type
*type
, struct type
*to_type
)
1530 TYPE_CODE (type
) = TYPE_CODE_METHODPTR
;
1531 TYPE_TARGET_TYPE (type
) = to_type
;
1532 set_type_self_type (type
, TYPE_SELF_TYPE (to_type
));
1533 TYPE_LENGTH (type
) = cplus_method_ptr_size (to_type
);
1536 /* Smash TYPE to be a type of method of SELF_TYPE with type TO_TYPE.
1537 METHOD just means `function that gets an extra "this" argument'.
1539 When "smashing" the type, we preserve the objfile that the old type
1540 pointed to, since we aren't changing where the type is actually
1544 smash_to_method_type (struct type
*type
, struct type
*self_type
,
1545 struct type
*to_type
, struct field
*args
,
1546 int nargs
, int varargs
)
1549 TYPE_CODE (type
) = TYPE_CODE_METHOD
;
1550 TYPE_TARGET_TYPE (type
) = to_type
;
1551 set_type_self_type (type
, self_type
);
1552 TYPE_FIELDS (type
) = args
;
1553 TYPE_NFIELDS (type
) = nargs
;
1555 TYPE_VARARGS (type
) = 1;
1556 TYPE_LENGTH (type
) = 1; /* In practice, this is never needed. */
1559 /* A wrapper of TYPE_NAME which calls error if the type is anonymous.
1560 Since GCC PR debug/47510 DWARF provides associated information to detect the
1561 anonymous class linkage name from its typedef.
1563 Parameter TYPE should not yet have CHECK_TYPEDEF applied, this function will
1567 type_name_or_error (struct type
*type
)
1569 struct type
*saved_type
= type
;
1571 struct objfile
*objfile
;
1573 type
= check_typedef (type
);
1575 name
= TYPE_NAME (type
);
1579 name
= TYPE_NAME (saved_type
);
1580 objfile
= TYPE_OBJFILE (saved_type
);
1581 error (_("Invalid anonymous type %s [in module %s], GCC PR debug/47510 bug?"),
1582 name
? name
: "<anonymous>",
1583 objfile
? objfile_name (objfile
) : "<arch>");
1586 /* Lookup a typedef or primitive type named NAME, visible in lexical
1587 block BLOCK. If NOERR is nonzero, return zero if NAME is not
1588 suitably defined. */
1591 lookup_typename (const struct language_defn
*language
,
1593 const struct block
*block
, int noerr
)
1597 sym
= lookup_symbol_in_language (name
, block
, VAR_DOMAIN
,
1598 language
->la_language
, NULL
).symbol
;
1599 if (sym
!= NULL
&& SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
1600 return SYMBOL_TYPE (sym
);
1604 error (_("No type named %s."), name
);
1608 lookup_unsigned_typename (const struct language_defn
*language
,
1611 char *uns
= (char *) alloca (strlen (name
) + 10);
1613 strcpy (uns
, "unsigned ");
1614 strcpy (uns
+ 9, name
);
1615 return lookup_typename (language
, uns
, NULL
, 0);
1619 lookup_signed_typename (const struct language_defn
*language
, const char *name
)
1622 char *uns
= (char *) alloca (strlen (name
) + 8);
1624 strcpy (uns
, "signed ");
1625 strcpy (uns
+ 7, name
);
1626 t
= lookup_typename (language
, uns
, NULL
, 1);
1627 /* If we don't find "signed FOO" just try again with plain "FOO". */
1630 return lookup_typename (language
, name
, NULL
, 0);
1633 /* Lookup a structure type named "struct NAME",
1634 visible in lexical block BLOCK. */
1637 lookup_struct (const char *name
, const struct block
*block
)
1641 sym
= lookup_symbol (name
, block
, STRUCT_DOMAIN
, 0).symbol
;
1645 error (_("No struct type named %s."), name
);
1647 if (TYPE_CODE (SYMBOL_TYPE (sym
)) != TYPE_CODE_STRUCT
)
1649 error (_("This context has class, union or enum %s, not a struct."),
1652 return (SYMBOL_TYPE (sym
));
1655 /* Lookup a union type named "union NAME",
1656 visible in lexical block BLOCK. */
1659 lookup_union (const char *name
, const struct block
*block
)
1664 sym
= lookup_symbol (name
, block
, STRUCT_DOMAIN
, 0).symbol
;
1667 error (_("No union type named %s."), name
);
1669 t
= SYMBOL_TYPE (sym
);
1671 if (TYPE_CODE (t
) == TYPE_CODE_UNION
)
1674 /* If we get here, it's not a union. */
1675 error (_("This context has class, struct or enum %s, not a union."),
1679 /* Lookup an enum type named "enum NAME",
1680 visible in lexical block BLOCK. */
1683 lookup_enum (const char *name
, const struct block
*block
)
1687 sym
= lookup_symbol (name
, block
, STRUCT_DOMAIN
, 0).symbol
;
1690 error (_("No enum type named %s."), name
);
1692 if (TYPE_CODE (SYMBOL_TYPE (sym
)) != TYPE_CODE_ENUM
)
1694 error (_("This context has class, struct or union %s, not an enum."),
1697 return (SYMBOL_TYPE (sym
));
1700 /* Lookup a template type named "template NAME<TYPE>",
1701 visible in lexical block BLOCK. */
1704 lookup_template_type (const char *name
, struct type
*type
,
1705 const struct block
*block
)
1708 char *nam
= (char *)
1709 alloca (strlen (name
) + strlen (TYPE_NAME (type
)) + 4);
1713 strcat (nam
, TYPE_NAME (type
));
1714 strcat (nam
, " >"); /* FIXME, extra space still introduced in gcc? */
1716 sym
= lookup_symbol (nam
, block
, VAR_DOMAIN
, 0).symbol
;
1720 error (_("No template type named %s."), name
);
1722 if (TYPE_CODE (SYMBOL_TYPE (sym
)) != TYPE_CODE_STRUCT
)
1724 error (_("This context has class, union or enum %s, not a struct."),
1727 return (SYMBOL_TYPE (sym
));
1730 /* See gdbtypes.h. */
1733 lookup_struct_elt (struct type
*type
, const char *name
, int noerr
)
1739 type
= check_typedef (type
);
1740 if (TYPE_CODE (type
) != TYPE_CODE_PTR
1741 && TYPE_CODE (type
) != TYPE_CODE_REF
)
1743 type
= TYPE_TARGET_TYPE (type
);
1746 if (TYPE_CODE (type
) != TYPE_CODE_STRUCT
1747 && TYPE_CODE (type
) != TYPE_CODE_UNION
)
1749 std::string type_name
= type_to_string (type
);
1750 error (_("Type %s is not a structure or union type."),
1751 type_name
.c_str ());
1754 for (i
= TYPE_NFIELDS (type
) - 1; i
>= TYPE_N_BASECLASSES (type
); i
--)
1756 const char *t_field_name
= TYPE_FIELD_NAME (type
, i
);
1758 if (t_field_name
&& (strcmp_iw (t_field_name
, name
) == 0))
1760 return {&TYPE_FIELD (type
, i
), TYPE_FIELD_BITPOS (type
, i
)};
1762 else if (!t_field_name
|| *t_field_name
== '\0')
1765 = lookup_struct_elt (TYPE_FIELD_TYPE (type
, i
), name
, 1);
1766 if (elt
.field
!= NULL
)
1768 elt
.offset
+= TYPE_FIELD_BITPOS (type
, i
);
1774 /* OK, it's not in this class. Recursively check the baseclasses. */
1775 for (i
= TYPE_N_BASECLASSES (type
) - 1; i
>= 0; i
--)
1777 struct_elt elt
= lookup_struct_elt (TYPE_BASECLASS (type
, i
), name
, 1);
1778 if (elt
.field
!= NULL
)
1783 return {nullptr, 0};
1785 std::string type_name
= type_to_string (type
);
1786 error (_("Type %s has no component named %s."), type_name
.c_str (), name
);
1789 /* See gdbtypes.h. */
1792 lookup_struct_elt_type (struct type
*type
, const char *name
, int noerr
)
1794 struct_elt elt
= lookup_struct_elt (type
, name
, noerr
);
1795 if (elt
.field
!= NULL
)
1796 return FIELD_TYPE (*elt
.field
);
1801 /* Store in *MAX the largest number representable by unsigned integer type
1805 get_unsigned_type_max (struct type
*type
, ULONGEST
*max
)
1809 type
= check_typedef (type
);
1810 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_INT
&& TYPE_UNSIGNED (type
));
1811 gdb_assert (TYPE_LENGTH (type
) <= sizeof (ULONGEST
));
1813 /* Written this way to avoid overflow. */
1814 n
= TYPE_LENGTH (type
) * TARGET_CHAR_BIT
;
1815 *max
= ((((ULONGEST
) 1 << (n
- 1)) - 1) << 1) | 1;
1818 /* Store in *MIN, *MAX the smallest and largest numbers representable by
1819 signed integer type TYPE. */
1822 get_signed_type_minmax (struct type
*type
, LONGEST
*min
, LONGEST
*max
)
1826 type
= check_typedef (type
);
1827 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_INT
&& !TYPE_UNSIGNED (type
));
1828 gdb_assert (TYPE_LENGTH (type
) <= sizeof (LONGEST
));
1830 n
= TYPE_LENGTH (type
) * TARGET_CHAR_BIT
;
1831 *min
= -((ULONGEST
) 1 << (n
- 1));
1832 *max
= ((ULONGEST
) 1 << (n
- 1)) - 1;
1835 /* Internal routine called by TYPE_VPTR_FIELDNO to return the value of
1836 cplus_stuff.vptr_fieldno.
1838 cplus_stuff is initialized to cplus_struct_default which does not
1839 set vptr_fieldno to -1 for portability reasons (IWBN to use C99
1840 designated initializers). We cope with that here. */
1843 internal_type_vptr_fieldno (struct type
*type
)
1845 type
= check_typedef (type
);
1846 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_STRUCT
1847 || TYPE_CODE (type
) == TYPE_CODE_UNION
);
1848 if (!HAVE_CPLUS_STRUCT (type
))
1850 return TYPE_RAW_CPLUS_SPECIFIC (type
)->vptr_fieldno
;
1853 /* Set the value of cplus_stuff.vptr_fieldno. */
1856 set_type_vptr_fieldno (struct type
*type
, int fieldno
)
1858 type
= check_typedef (type
);
1859 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_STRUCT
1860 || TYPE_CODE (type
) == TYPE_CODE_UNION
);
1861 if (!HAVE_CPLUS_STRUCT (type
))
1862 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
1863 TYPE_RAW_CPLUS_SPECIFIC (type
)->vptr_fieldno
= fieldno
;
1866 /* Internal routine called by TYPE_VPTR_BASETYPE to return the value of
1867 cplus_stuff.vptr_basetype. */
1870 internal_type_vptr_basetype (struct type
*type
)
1872 type
= check_typedef (type
);
1873 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_STRUCT
1874 || TYPE_CODE (type
) == TYPE_CODE_UNION
);
1875 gdb_assert (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_CPLUS_STUFF
);
1876 return TYPE_RAW_CPLUS_SPECIFIC (type
)->vptr_basetype
;
1879 /* Set the value of cplus_stuff.vptr_basetype. */
1882 set_type_vptr_basetype (struct type
*type
, struct type
*basetype
)
1884 type
= check_typedef (type
);
1885 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_STRUCT
1886 || TYPE_CODE (type
) == TYPE_CODE_UNION
);
1887 if (!HAVE_CPLUS_STRUCT (type
))
1888 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
1889 TYPE_RAW_CPLUS_SPECIFIC (type
)->vptr_basetype
= basetype
;
1892 /* Lookup the vptr basetype/fieldno values for TYPE.
1893 If found store vptr_basetype in *BASETYPEP if non-NULL, and return
1894 vptr_fieldno. Also, if found and basetype is from the same objfile,
1896 If not found, return -1 and ignore BASETYPEP.
1897 Callers should be aware that in some cases (for example,
1898 the type or one of its baseclasses is a stub type and we are
1899 debugging a .o file, or the compiler uses DWARF-2 and is not GCC),
1900 this function will not be able to find the
1901 virtual function table pointer, and vptr_fieldno will remain -1 and
1902 vptr_basetype will remain NULL or incomplete. */
1905 get_vptr_fieldno (struct type
*type
, struct type
**basetypep
)
1907 type
= check_typedef (type
);
1909 if (TYPE_VPTR_FIELDNO (type
) < 0)
1913 /* We must start at zero in case the first (and only) baseclass
1914 is virtual (and hence we cannot share the table pointer). */
1915 for (i
= 0; i
< TYPE_N_BASECLASSES (type
); i
++)
1917 struct type
*baseclass
= check_typedef (TYPE_BASECLASS (type
, i
));
1919 struct type
*basetype
;
1921 fieldno
= get_vptr_fieldno (baseclass
, &basetype
);
1924 /* If the type comes from a different objfile we can't cache
1925 it, it may have a different lifetime. PR 2384 */
1926 if (TYPE_OBJFILE (type
) == TYPE_OBJFILE (basetype
))
1928 set_type_vptr_fieldno (type
, fieldno
);
1929 set_type_vptr_basetype (type
, basetype
);
1932 *basetypep
= basetype
;
1943 *basetypep
= TYPE_VPTR_BASETYPE (type
);
1944 return TYPE_VPTR_FIELDNO (type
);
1949 stub_noname_complaint (void)
1951 complaint (_("stub type has NULL name"));
1954 /* Return nonzero if TYPE has a DYN_PROP_BYTE_STRIDE dynamic property
1955 attached to it, and that property has a non-constant value. */
1958 array_type_has_dynamic_stride (struct type
*type
)
1960 struct dynamic_prop
*prop
= get_dyn_prop (DYN_PROP_BYTE_STRIDE
, type
);
1962 return (prop
!= NULL
&& prop
->kind
!= PROP_CONST
);
1965 /* Worker for is_dynamic_type. */
1968 is_dynamic_type_internal (struct type
*type
, int top_level
)
1970 type
= check_typedef (type
);
1972 /* We only want to recognize references at the outermost level. */
1973 if (top_level
&& TYPE_CODE (type
) == TYPE_CODE_REF
)
1974 type
= check_typedef (TYPE_TARGET_TYPE (type
));
1976 /* Types that have a dynamic TYPE_DATA_LOCATION are considered
1977 dynamic, even if the type itself is statically defined.
1978 From a user's point of view, this may appear counter-intuitive;
1979 but it makes sense in this context, because the point is to determine
1980 whether any part of the type needs to be resolved before it can
1982 if (TYPE_DATA_LOCATION (type
) != NULL
1983 && (TYPE_DATA_LOCATION_KIND (type
) == PROP_LOCEXPR
1984 || TYPE_DATA_LOCATION_KIND (type
) == PROP_LOCLIST
))
1987 if (TYPE_ASSOCIATED_PROP (type
))
1990 if (TYPE_ALLOCATED_PROP (type
))
1993 struct dynamic_prop
*prop
= get_dyn_prop (DYN_PROP_VARIANT_PARTS
, type
);
1994 if (prop
!= nullptr && prop
->kind
!= PROP_TYPE
)
1997 if (TYPE_HAS_DYNAMIC_LENGTH (type
))
2000 switch (TYPE_CODE (type
))
2002 case TYPE_CODE_RANGE
:
2004 /* A range type is obviously dynamic if it has at least one
2005 dynamic bound. But also consider the range type to be
2006 dynamic when its subtype is dynamic, even if the bounds
2007 of the range type are static. It allows us to assume that
2008 the subtype of a static range type is also static. */
2009 return (!has_static_range (TYPE_RANGE_DATA (type
))
2010 || is_dynamic_type_internal (TYPE_TARGET_TYPE (type
), 0));
2013 case TYPE_CODE_STRING
:
2014 /* Strings are very much like an array of characters, and can be
2015 treated as one here. */
2016 case TYPE_CODE_ARRAY
:
2018 gdb_assert (TYPE_NFIELDS (type
) == 1);
2020 /* The array is dynamic if either the bounds are dynamic... */
2021 if (is_dynamic_type_internal (TYPE_INDEX_TYPE (type
), 0))
2023 /* ... or the elements it contains have a dynamic contents... */
2024 if (is_dynamic_type_internal (TYPE_TARGET_TYPE (type
), 0))
2026 /* ... or if it has a dynamic stride... */
2027 if (array_type_has_dynamic_stride (type
))
2032 case TYPE_CODE_STRUCT
:
2033 case TYPE_CODE_UNION
:
2037 bool is_cplus
= HAVE_CPLUS_STRUCT (type
);
2039 for (i
= 0; i
< TYPE_NFIELDS (type
); ++i
)
2041 /* Static fields can be ignored here. */
2042 if (field_is_static (&TYPE_FIELD (type
, i
)))
2044 /* If the field has dynamic type, then so does TYPE. */
2045 if (is_dynamic_type_internal (TYPE_FIELD_TYPE (type
, i
), 0))
2047 /* If the field is at a fixed offset, then it is not
2049 if (TYPE_FIELD_LOC_KIND (type
, i
) != FIELD_LOC_KIND_DWARF_BLOCK
)
2051 /* Do not consider C++ virtual base types to be dynamic
2052 due to the field's offset being dynamic; these are
2053 handled via other means. */
2054 if (is_cplus
&& BASETYPE_VIA_VIRTUAL (type
, i
))
2065 /* See gdbtypes.h. */
2068 is_dynamic_type (struct type
*type
)
2070 return is_dynamic_type_internal (type
, 1);
2073 static struct type
*resolve_dynamic_type_internal
2074 (struct type
*type
, struct property_addr_info
*addr_stack
, int top_level
);
2076 /* Given a dynamic range type (dyn_range_type) and a stack of
2077 struct property_addr_info elements, return a static version
2080 static struct type
*
2081 resolve_dynamic_range (struct type
*dyn_range_type
,
2082 struct property_addr_info
*addr_stack
)
2085 struct type
*static_range_type
, *static_target_type
;
2086 const struct dynamic_prop
*prop
;
2087 struct dynamic_prop low_bound
, high_bound
, stride
;
2089 gdb_assert (TYPE_CODE (dyn_range_type
) == TYPE_CODE_RANGE
);
2091 prop
= &TYPE_RANGE_DATA (dyn_range_type
)->low
;
2092 if (dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2094 low_bound
.kind
= PROP_CONST
;
2095 low_bound
.data
.const_val
= value
;
2099 low_bound
.kind
= PROP_UNDEFINED
;
2100 low_bound
.data
.const_val
= 0;
2103 prop
= &TYPE_RANGE_DATA (dyn_range_type
)->high
;
2104 if (dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2106 high_bound
.kind
= PROP_CONST
;
2107 high_bound
.data
.const_val
= value
;
2109 if (TYPE_RANGE_DATA (dyn_range_type
)->flag_upper_bound_is_count
)
2110 high_bound
.data
.const_val
2111 = low_bound
.data
.const_val
+ high_bound
.data
.const_val
- 1;
2115 high_bound
.kind
= PROP_UNDEFINED
;
2116 high_bound
.data
.const_val
= 0;
2119 bool byte_stride_p
= TYPE_RANGE_DATA (dyn_range_type
)->flag_is_byte_stride
;
2120 prop
= &TYPE_RANGE_DATA (dyn_range_type
)->stride
;
2121 if (dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2123 stride
.kind
= PROP_CONST
;
2124 stride
.data
.const_val
= value
;
2126 /* If we have a bit stride that is not an exact number of bytes then
2127 I really don't think this is going to work with current GDB, the
2128 array indexing code in GDB seems to be pretty heavily tied to byte
2129 offsets right now. Assuming 8 bits in a byte. */
2130 struct gdbarch
*gdbarch
= get_type_arch (dyn_range_type
);
2131 int unit_size
= gdbarch_addressable_memory_unit_size (gdbarch
);
2132 if (!byte_stride_p
&& (value
% (unit_size
* 8)) != 0)
2133 error (_("bit strides that are not a multiple of the byte size "
2134 "are currently not supported"));
2138 stride
.kind
= PROP_UNDEFINED
;
2139 stride
.data
.const_val
= 0;
2140 byte_stride_p
= true;
2144 = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (dyn_range_type
),
2146 LONGEST bias
= TYPE_RANGE_DATA (dyn_range_type
)->bias
;
2147 static_range_type
= create_range_type_with_stride
2148 (copy_type (dyn_range_type
), static_target_type
,
2149 &low_bound
, &high_bound
, bias
, &stride
, byte_stride_p
);
2150 TYPE_RANGE_DATA (static_range_type
)->flag_bound_evaluated
= 1;
2151 return static_range_type
;
2154 /* Resolves dynamic bound values of an array or string type TYPE to static
2155 ones. ADDR_STACK is a stack of struct property_addr_info to be used if
2156 needed during the dynamic resolution. */
2158 static struct type
*
2159 resolve_dynamic_array_or_string (struct type
*type
,
2160 struct property_addr_info
*addr_stack
)
2163 struct type
*elt_type
;
2164 struct type
*range_type
;
2165 struct type
*ary_dim
;
2166 struct dynamic_prop
*prop
;
2167 unsigned int bit_stride
= 0;
2169 /* For dynamic type resolution strings can be treated like arrays of
2171 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_ARRAY
2172 || TYPE_CODE (type
) == TYPE_CODE_STRING
);
2174 type
= copy_type (type
);
2177 range_type
= check_typedef (TYPE_INDEX_TYPE (elt_type
));
2178 range_type
= resolve_dynamic_range (range_type
, addr_stack
);
2180 /* Resolve allocated/associated here before creating a new array type, which
2181 will update the length of the array accordingly. */
2182 prop
= TYPE_ALLOCATED_PROP (type
);
2183 if (prop
!= NULL
&& dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2185 TYPE_DYN_PROP_ADDR (prop
) = value
;
2186 TYPE_DYN_PROP_KIND (prop
) = PROP_CONST
;
2188 prop
= TYPE_ASSOCIATED_PROP (type
);
2189 if (prop
!= NULL
&& dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2191 TYPE_DYN_PROP_ADDR (prop
) = value
;
2192 TYPE_DYN_PROP_KIND (prop
) = PROP_CONST
;
2195 ary_dim
= check_typedef (TYPE_TARGET_TYPE (elt_type
));
2197 if (ary_dim
!= NULL
&& TYPE_CODE (ary_dim
) == TYPE_CODE_ARRAY
)
2198 elt_type
= resolve_dynamic_array_or_string (ary_dim
, addr_stack
);
2200 elt_type
= TYPE_TARGET_TYPE (type
);
2202 prop
= get_dyn_prop (DYN_PROP_BYTE_STRIDE
, type
);
2205 if (dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2207 remove_dyn_prop (DYN_PROP_BYTE_STRIDE
, type
);
2208 bit_stride
= (unsigned int) (value
* 8);
2212 /* Could be a bug in our code, but it could also happen
2213 if the DWARF info is not correct. Issue a warning,
2214 and assume no byte/bit stride (leave bit_stride = 0). */
2215 warning (_("cannot determine array stride for type %s"),
2216 TYPE_NAME (type
) ? TYPE_NAME (type
) : "<no name>");
2220 bit_stride
= TYPE_FIELD_BITSIZE (type
, 0);
2222 return create_array_type_with_stride (type
, elt_type
, range_type
, NULL
,
2226 /* Resolve dynamic bounds of members of the union TYPE to static
2227 bounds. ADDR_STACK is a stack of struct property_addr_info
2228 to be used if needed during the dynamic resolution. */
2230 static struct type
*
2231 resolve_dynamic_union (struct type
*type
,
2232 struct property_addr_info
*addr_stack
)
2234 struct type
*resolved_type
;
2236 unsigned int max_len
= 0;
2238 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_UNION
);
2240 resolved_type
= copy_type (type
);
2241 TYPE_FIELDS (resolved_type
)
2242 = (struct field
*) TYPE_ALLOC (resolved_type
,
2243 TYPE_NFIELDS (resolved_type
)
2244 * sizeof (struct field
));
2245 memcpy (TYPE_FIELDS (resolved_type
),
2247 TYPE_NFIELDS (resolved_type
) * sizeof (struct field
));
2248 for (i
= 0; i
< TYPE_NFIELDS (resolved_type
); ++i
)
2252 if (field_is_static (&TYPE_FIELD (type
, i
)))
2255 t
= resolve_dynamic_type_internal (TYPE_FIELD_TYPE (resolved_type
, i
),
2257 TYPE_FIELD_TYPE (resolved_type
, i
) = t
;
2258 if (TYPE_LENGTH (t
) > max_len
)
2259 max_len
= TYPE_LENGTH (t
);
2262 TYPE_LENGTH (resolved_type
) = max_len
;
2263 return resolved_type
;
2266 /* See gdbtypes.h. */
2269 variant::matches (ULONGEST value
, bool is_unsigned
) const
2271 for (const discriminant_range
&range
: discriminants
)
2272 if (range
.contains (value
, is_unsigned
))
2278 compute_variant_fields_inner (struct type
*type
,
2279 struct property_addr_info
*addr_stack
,
2280 const variant_part
&part
,
2281 std::vector
<bool> &flags
);
2283 /* A helper function to determine which variant fields will be active.
2284 This handles both the variant's direct fields, and any variant
2285 parts embedded in this variant. TYPE is the type we're examining.
2286 ADDR_STACK holds information about the concrete object. VARIANT is
2287 the current variant to be handled. FLAGS is where the results are
2288 stored -- this function sets the Nth element in FLAGS if the
2289 corresponding field is enabled. ENABLED is whether this variant is
2293 compute_variant_fields_recurse (struct type
*type
,
2294 struct property_addr_info
*addr_stack
,
2295 const variant
&variant
,
2296 std::vector
<bool> &flags
,
2299 for (int field
= variant
.first_field
; field
< variant
.last_field
; ++field
)
2300 flags
[field
] = enabled
;
2302 for (const variant_part
&new_part
: variant
.parts
)
2305 compute_variant_fields_inner (type
, addr_stack
, new_part
, flags
);
2308 for (const auto &sub_variant
: new_part
.variants
)
2309 compute_variant_fields_recurse (type
, addr_stack
, sub_variant
,
2315 /* A helper function to determine which variant fields will be active.
2316 This evaluates the discriminant, decides which variant (if any) is
2317 active, and then updates FLAGS to reflect which fields should be
2318 available. TYPE is the type we're examining. ADDR_STACK holds
2319 information about the concrete object. VARIANT is the current
2320 variant to be handled. FLAGS is where the results are stored --
2321 this function sets the Nth element in FLAGS if the corresponding
2322 field is enabled. */
2325 compute_variant_fields_inner (struct type
*type
,
2326 struct property_addr_info
*addr_stack
,
2327 const variant_part
&part
,
2328 std::vector
<bool> &flags
)
2330 /* Evaluate the discriminant. */
2331 gdb::optional
<ULONGEST
> discr_value
;
2332 if (part
.discriminant_index
!= -1)
2334 int idx
= part
.discriminant_index
;
2336 if (TYPE_FIELD_LOC_KIND (type
, idx
) != FIELD_LOC_KIND_BITPOS
)
2337 error (_("Cannot determine struct field location"
2338 " (invalid location kind)"));
2340 if (addr_stack
->valaddr
.data () != NULL
)
2341 discr_value
= unpack_field_as_long (type
, addr_stack
->valaddr
.data (),
2345 CORE_ADDR addr
= (addr_stack
->addr
2346 + (TYPE_FIELD_BITPOS (type
, idx
)
2347 / TARGET_CHAR_BIT
));
2349 LONGEST bitsize
= TYPE_FIELD_BITSIZE (type
, idx
);
2350 LONGEST size
= bitsize
/ 8;
2352 size
= TYPE_LENGTH (TYPE_FIELD_TYPE (type
, idx
));
2354 gdb_byte bits
[sizeof (ULONGEST
)];
2355 read_memory (addr
, bits
, size
);
2357 LONGEST bitpos
= (TYPE_FIELD_BITPOS (type
, idx
)
2360 discr_value
= unpack_bits_as_long (TYPE_FIELD_TYPE (type
, idx
),
2361 bits
, bitpos
, bitsize
);
2365 /* Go through each variant and see which applies. */
2366 const variant
*default_variant
= nullptr;
2367 const variant
*applied_variant
= nullptr;
2368 for (const auto &variant
: part
.variants
)
2370 if (variant
.is_default ())
2371 default_variant
= &variant
;
2372 else if (discr_value
.has_value ()
2373 && variant
.matches (*discr_value
, part
.is_unsigned
))
2375 applied_variant
= &variant
;
2379 if (applied_variant
== nullptr)
2380 applied_variant
= default_variant
;
2382 for (const auto &variant
: part
.variants
)
2383 compute_variant_fields_recurse (type
, addr_stack
, variant
,
2384 flags
, applied_variant
== &variant
);
2387 /* Determine which variant fields are available in TYPE. The enabled
2388 fields are stored in RESOLVED_TYPE. ADDR_STACK holds information
2389 about the concrete object. PARTS describes the top-level variant
2390 parts for this type. */
2393 compute_variant_fields (struct type
*type
,
2394 struct type
*resolved_type
,
2395 struct property_addr_info
*addr_stack
,
2396 const gdb::array_view
<variant_part
> &parts
)
2398 /* Assume all fields are included by default. */
2399 std::vector
<bool> flags (TYPE_NFIELDS (resolved_type
), true);
2401 /* Now disable fields based on the variants that control them. */
2402 for (const auto &part
: parts
)
2403 compute_variant_fields_inner (type
, addr_stack
, part
, flags
);
2405 TYPE_NFIELDS (resolved_type
) = std::count (flags
.begin (), flags
.end (),
2407 TYPE_FIELDS (resolved_type
)
2408 = (struct field
*) TYPE_ALLOC (resolved_type
,
2409 TYPE_NFIELDS (resolved_type
)
2410 * sizeof (struct field
));
2412 for (int i
= 0; i
< TYPE_NFIELDS (type
); ++i
)
2417 TYPE_FIELD (resolved_type
, out
) = TYPE_FIELD (type
, i
);
2422 /* Resolve dynamic bounds of members of the struct TYPE to static
2423 bounds. ADDR_STACK is a stack of struct property_addr_info to
2424 be used if needed during the dynamic resolution. */
2426 static struct type
*
2427 resolve_dynamic_struct (struct type
*type
,
2428 struct property_addr_info
*addr_stack
)
2430 struct type
*resolved_type
;
2432 unsigned resolved_type_bit_length
= 0;
2434 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_STRUCT
);
2435 gdb_assert (TYPE_NFIELDS (type
) > 0);
2437 resolved_type
= copy_type (type
);
2439 struct dynamic_prop
*variant_prop
= get_dyn_prop (DYN_PROP_VARIANT_PARTS
,
2441 if (variant_prop
!= nullptr && variant_prop
->kind
== PROP_VARIANT_PARTS
)
2443 compute_variant_fields (type
, resolved_type
, addr_stack
,
2444 *variant_prop
->data
.variant_parts
);
2445 /* We want to leave the property attached, so that the Rust code
2446 can tell whether the type was originally an enum. */
2447 variant_prop
->kind
= PROP_TYPE
;
2448 variant_prop
->data
.original_type
= type
;
2452 TYPE_FIELDS (resolved_type
)
2453 = (struct field
*) TYPE_ALLOC (resolved_type
,
2454 TYPE_NFIELDS (resolved_type
)
2455 * sizeof (struct field
));
2456 memcpy (TYPE_FIELDS (resolved_type
),
2458 TYPE_NFIELDS (resolved_type
) * sizeof (struct field
));
2461 for (i
= 0; i
< TYPE_NFIELDS (resolved_type
); ++i
)
2463 unsigned new_bit_length
;
2464 struct property_addr_info pinfo
;
2466 if (field_is_static (&TYPE_FIELD (resolved_type
, i
)))
2469 if (TYPE_FIELD_LOC_KIND (resolved_type
, i
) == FIELD_LOC_KIND_DWARF_BLOCK
)
2471 struct dwarf2_property_baton baton
;
2473 = lookup_pointer_type (TYPE_FIELD_TYPE (resolved_type
, i
));
2474 baton
.locexpr
= *TYPE_FIELD_DWARF_BLOCK (resolved_type
, i
);
2476 struct dynamic_prop prop
;
2477 prop
.kind
= PROP_LOCEXPR
;
2478 prop
.data
.baton
= &baton
;
2481 if (dwarf2_evaluate_property (&prop
, nullptr, addr_stack
, &addr
,
2483 SET_FIELD_BITPOS (TYPE_FIELD (resolved_type
, i
),
2484 TARGET_CHAR_BIT
* (addr
- addr_stack
->addr
));
2487 /* As we know this field is not a static field, the field's
2488 field_loc_kind should be FIELD_LOC_KIND_BITPOS. Verify
2489 this is the case, but only trigger a simple error rather
2490 than an internal error if that fails. While failing
2491 that verification indicates a bug in our code, the error
2492 is not severe enough to suggest to the user he stops
2493 his debugging session because of it. */
2494 if (TYPE_FIELD_LOC_KIND (resolved_type
, i
) != FIELD_LOC_KIND_BITPOS
)
2495 error (_("Cannot determine struct field location"
2496 " (invalid location kind)"));
2498 pinfo
.type
= check_typedef (TYPE_FIELD_TYPE (resolved_type
, i
));
2499 pinfo
.valaddr
= addr_stack
->valaddr
;
2502 + (TYPE_FIELD_BITPOS (resolved_type
, i
) / TARGET_CHAR_BIT
));
2503 pinfo
.next
= addr_stack
;
2505 TYPE_FIELD_TYPE (resolved_type
, i
)
2506 = resolve_dynamic_type_internal (TYPE_FIELD_TYPE (resolved_type
, i
),
2508 gdb_assert (TYPE_FIELD_LOC_KIND (resolved_type
, i
)
2509 == FIELD_LOC_KIND_BITPOS
);
2511 new_bit_length
= TYPE_FIELD_BITPOS (resolved_type
, i
);
2512 if (TYPE_FIELD_BITSIZE (resolved_type
, i
) != 0)
2513 new_bit_length
+= TYPE_FIELD_BITSIZE (resolved_type
, i
);
2515 new_bit_length
+= (TYPE_LENGTH (TYPE_FIELD_TYPE (resolved_type
, i
))
2518 /* Normally, we would use the position and size of the last field
2519 to determine the size of the enclosing structure. But GCC seems
2520 to be encoding the position of some fields incorrectly when
2521 the struct contains a dynamic field that is not placed last.
2522 So we compute the struct size based on the field that has
2523 the highest position + size - probably the best we can do. */
2524 if (new_bit_length
> resolved_type_bit_length
)
2525 resolved_type_bit_length
= new_bit_length
;
2528 /* The length of a type won't change for fortran, but it does for C and Ada.
2529 For fortran the size of dynamic fields might change over time but not the
2530 type length of the structure. If we adapt it, we run into problems
2531 when calculating the element offset for arrays of structs. */
2532 if (current_language
->la_language
!= language_fortran
)
2533 TYPE_LENGTH (resolved_type
)
2534 = (resolved_type_bit_length
+ TARGET_CHAR_BIT
- 1) / TARGET_CHAR_BIT
;
2536 /* The Ada language uses this field as a cache for static fixed types: reset
2537 it as RESOLVED_TYPE must have its own static fixed type. */
2538 TYPE_TARGET_TYPE (resolved_type
) = NULL
;
2540 return resolved_type
;
2543 /* Worker for resolved_dynamic_type. */
2545 static struct type
*
2546 resolve_dynamic_type_internal (struct type
*type
,
2547 struct property_addr_info
*addr_stack
,
2550 struct type
*real_type
= check_typedef (type
);
2551 struct type
*resolved_type
= nullptr;
2552 struct dynamic_prop
*prop
;
2555 if (!is_dynamic_type_internal (real_type
, top_level
))
2558 gdb::optional
<CORE_ADDR
> type_length
;
2559 prop
= TYPE_DYNAMIC_LENGTH (type
);
2561 && dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2562 type_length
= value
;
2564 if (TYPE_CODE (type
) == TYPE_CODE_TYPEDEF
)
2566 resolved_type
= copy_type (type
);
2567 TYPE_TARGET_TYPE (resolved_type
)
2568 = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (type
), addr_stack
,
2573 /* Before trying to resolve TYPE, make sure it is not a stub. */
2576 switch (TYPE_CODE (type
))
2580 struct property_addr_info pinfo
;
2582 pinfo
.type
= check_typedef (TYPE_TARGET_TYPE (type
));
2584 if (addr_stack
->valaddr
.data () != NULL
)
2585 pinfo
.addr
= extract_typed_address (addr_stack
->valaddr
.data (),
2588 pinfo
.addr
= read_memory_typed_address (addr_stack
->addr
, type
);
2589 pinfo
.next
= addr_stack
;
2591 resolved_type
= copy_type (type
);
2592 TYPE_TARGET_TYPE (resolved_type
)
2593 = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (type
),
2598 case TYPE_CODE_STRING
:
2599 /* Strings are very much like an array of characters, and can be
2600 treated as one here. */
2601 case TYPE_CODE_ARRAY
:
2602 resolved_type
= resolve_dynamic_array_or_string (type
, addr_stack
);
2605 case TYPE_CODE_RANGE
:
2606 resolved_type
= resolve_dynamic_range (type
, addr_stack
);
2609 case TYPE_CODE_UNION
:
2610 resolved_type
= resolve_dynamic_union (type
, addr_stack
);
2613 case TYPE_CODE_STRUCT
:
2614 resolved_type
= resolve_dynamic_struct (type
, addr_stack
);
2619 if (resolved_type
== nullptr)
2622 if (type_length
.has_value ())
2624 TYPE_LENGTH (resolved_type
) = *type_length
;
2625 remove_dyn_prop (DYN_PROP_BYTE_SIZE
, resolved_type
);
2628 /* Resolve data_location attribute. */
2629 prop
= TYPE_DATA_LOCATION (resolved_type
);
2631 && dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2633 TYPE_DYN_PROP_ADDR (prop
) = value
;
2634 TYPE_DYN_PROP_KIND (prop
) = PROP_CONST
;
2637 return resolved_type
;
2640 /* See gdbtypes.h */
2643 resolve_dynamic_type (struct type
*type
,
2644 gdb::array_view
<const gdb_byte
> valaddr
,
2647 struct property_addr_info pinfo
2648 = {check_typedef (type
), valaddr
, addr
, NULL
};
2650 return resolve_dynamic_type_internal (type
, &pinfo
, 1);
2653 /* See gdbtypes.h */
2655 struct dynamic_prop
*
2656 get_dyn_prop (enum dynamic_prop_node_kind prop_kind
, const struct type
*type
)
2658 struct dynamic_prop_list
*node
= TYPE_DYN_PROP_LIST (type
);
2660 while (node
!= NULL
)
2662 if (node
->prop_kind
== prop_kind
)
2669 /* See gdbtypes.h */
2672 add_dyn_prop (enum dynamic_prop_node_kind prop_kind
, struct dynamic_prop prop
,
2675 struct dynamic_prop_list
*temp
;
2677 gdb_assert (TYPE_OBJFILE_OWNED (type
));
2679 temp
= XOBNEW (&TYPE_OBJFILE (type
)->objfile_obstack
,
2680 struct dynamic_prop_list
);
2681 temp
->prop_kind
= prop_kind
;
2683 temp
->next
= TYPE_DYN_PROP_LIST (type
);
2685 TYPE_DYN_PROP_LIST (type
) = temp
;
2688 /* Remove dynamic property from TYPE in case it exists. */
2691 remove_dyn_prop (enum dynamic_prop_node_kind prop_kind
,
2694 struct dynamic_prop_list
*prev_node
, *curr_node
;
2696 curr_node
= TYPE_DYN_PROP_LIST (type
);
2699 while (NULL
!= curr_node
)
2701 if (curr_node
->prop_kind
== prop_kind
)
2703 /* Update the linked list but don't free anything.
2704 The property was allocated on objstack and it is not known
2705 if we are on top of it. Nevertheless, everything is released
2706 when the complete objstack is freed. */
2707 if (NULL
== prev_node
)
2708 TYPE_DYN_PROP_LIST (type
) = curr_node
->next
;
2710 prev_node
->next
= curr_node
->next
;
2715 prev_node
= curr_node
;
2716 curr_node
= curr_node
->next
;
2720 /* Find the real type of TYPE. This function returns the real type,
2721 after removing all layers of typedefs, and completing opaque or stub
2722 types. Completion changes the TYPE argument, but stripping of
2725 Instance flags (e.g. const/volatile) are preserved as typedefs are
2726 stripped. If necessary a new qualified form of the underlying type
2729 NOTE: This will return a typedef if TYPE_TARGET_TYPE for the typedef has
2730 not been computed and we're either in the middle of reading symbols, or
2731 there was no name for the typedef in the debug info.
2733 NOTE: Lookup of opaque types can throw errors for invalid symbol files.
2734 QUITs in the symbol reading code can also throw.
2735 Thus this function can throw an exception.
2737 If TYPE is a TYPE_CODE_TYPEDEF, its length is updated to the length of
2740 If this is a stubbed struct (i.e. declared as struct foo *), see if
2741 we can find a full definition in some other file. If so, copy this
2742 definition, so we can use it in future. There used to be a comment
2743 (but not any code) that if we don't find a full definition, we'd
2744 set a flag so we don't spend time in the future checking the same
2745 type. That would be a mistake, though--we might load in more
2746 symbols which contain a full definition for the type. */
2749 check_typedef (struct type
*type
)
2751 struct type
*orig_type
= type
;
2752 /* While we're removing typedefs, we don't want to lose qualifiers.
2753 E.g., const/volatile. */
2754 int instance_flags
= TYPE_INSTANCE_FLAGS (type
);
2758 while (TYPE_CODE (type
) == TYPE_CODE_TYPEDEF
)
2760 if (!TYPE_TARGET_TYPE (type
))
2765 /* It is dangerous to call lookup_symbol if we are currently
2766 reading a symtab. Infinite recursion is one danger. */
2767 if (currently_reading_symtab
)
2768 return make_qualified_type (type
, instance_flags
, NULL
);
2770 name
= TYPE_NAME (type
);
2771 /* FIXME: shouldn't we look in STRUCT_DOMAIN and/or
2772 VAR_DOMAIN as appropriate? */
2775 stub_noname_complaint ();
2776 return make_qualified_type (type
, instance_flags
, NULL
);
2778 sym
= lookup_symbol (name
, 0, STRUCT_DOMAIN
, 0).symbol
;
2780 TYPE_TARGET_TYPE (type
) = SYMBOL_TYPE (sym
);
2781 else /* TYPE_CODE_UNDEF */
2782 TYPE_TARGET_TYPE (type
) = alloc_type_arch (get_type_arch (type
));
2784 type
= TYPE_TARGET_TYPE (type
);
2786 /* Preserve the instance flags as we traverse down the typedef chain.
2788 Handling address spaces/classes is nasty, what do we do if there's a
2790 E.g., what if an outer typedef marks the type as class_1 and an inner
2791 typedef marks the type as class_2?
2792 This is the wrong place to do such error checking. We leave it to
2793 the code that created the typedef in the first place to flag the
2794 error. We just pick the outer address space (akin to letting the
2795 outer cast in a chain of casting win), instead of assuming
2796 "it can't happen". */
2798 const int ALL_SPACES
= (TYPE_INSTANCE_FLAG_CODE_SPACE
2799 | TYPE_INSTANCE_FLAG_DATA_SPACE
);
2800 const int ALL_CLASSES
= TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL
;
2801 int new_instance_flags
= TYPE_INSTANCE_FLAGS (type
);
2803 /* Treat code vs data spaces and address classes separately. */
2804 if ((instance_flags
& ALL_SPACES
) != 0)
2805 new_instance_flags
&= ~ALL_SPACES
;
2806 if ((instance_flags
& ALL_CLASSES
) != 0)
2807 new_instance_flags
&= ~ALL_CLASSES
;
2809 instance_flags
|= new_instance_flags
;
2813 /* If this is a struct/class/union with no fields, then check
2814 whether a full definition exists somewhere else. This is for
2815 systems where a type definition with no fields is issued for such
2816 types, instead of identifying them as stub types in the first
2819 if (TYPE_IS_OPAQUE (type
)
2820 && opaque_type_resolution
2821 && !currently_reading_symtab
)
2823 const char *name
= TYPE_NAME (type
);
2824 struct type
*newtype
;
2828 stub_noname_complaint ();
2829 return make_qualified_type (type
, instance_flags
, NULL
);
2831 newtype
= lookup_transparent_type (name
);
2835 /* If the resolved type and the stub are in the same
2836 objfile, then replace the stub type with the real deal.
2837 But if they're in separate objfiles, leave the stub
2838 alone; we'll just look up the transparent type every time
2839 we call check_typedef. We can't create pointers between
2840 types allocated to different objfiles, since they may
2841 have different lifetimes. Trying to copy NEWTYPE over to
2842 TYPE's objfile is pointless, too, since you'll have to
2843 move over any other types NEWTYPE refers to, which could
2844 be an unbounded amount of stuff. */
2845 if (TYPE_OBJFILE (newtype
) == TYPE_OBJFILE (type
))
2846 type
= make_qualified_type (newtype
,
2847 TYPE_INSTANCE_FLAGS (type
),
2853 /* Otherwise, rely on the stub flag being set for opaque/stubbed
2855 else if (TYPE_STUB (type
) && !currently_reading_symtab
)
2857 const char *name
= TYPE_NAME (type
);
2858 /* FIXME: shouldn't we look in STRUCT_DOMAIN and/or VAR_DOMAIN
2864 stub_noname_complaint ();
2865 return make_qualified_type (type
, instance_flags
, NULL
);
2867 sym
= lookup_symbol (name
, 0, STRUCT_DOMAIN
, 0).symbol
;
2870 /* Same as above for opaque types, we can replace the stub
2871 with the complete type only if they are in the same
2873 if (TYPE_OBJFILE (SYMBOL_TYPE(sym
)) == TYPE_OBJFILE (type
))
2874 type
= make_qualified_type (SYMBOL_TYPE (sym
),
2875 TYPE_INSTANCE_FLAGS (type
),
2878 type
= SYMBOL_TYPE (sym
);
2882 if (TYPE_TARGET_STUB (type
))
2884 struct type
*target_type
= check_typedef (TYPE_TARGET_TYPE (type
));
2886 if (TYPE_STUB (target_type
) || TYPE_TARGET_STUB (target_type
))
2888 /* Nothing we can do. */
2890 else if (TYPE_CODE (type
) == TYPE_CODE_RANGE
)
2892 TYPE_LENGTH (type
) = TYPE_LENGTH (target_type
);
2893 TYPE_TARGET_STUB (type
) = 0;
2895 else if (TYPE_CODE (type
) == TYPE_CODE_ARRAY
2896 && update_static_array_size (type
))
2897 TYPE_TARGET_STUB (type
) = 0;
2900 type
= make_qualified_type (type
, instance_flags
, NULL
);
2902 /* Cache TYPE_LENGTH for future use. */
2903 TYPE_LENGTH (orig_type
) = TYPE_LENGTH (type
);
2908 /* Parse a type expression in the string [P..P+LENGTH). If an error
2909 occurs, silently return a void type. */
2911 static struct type
*
2912 safe_parse_type (struct gdbarch
*gdbarch
, char *p
, int length
)
2914 struct ui_file
*saved_gdb_stderr
;
2915 struct type
*type
= NULL
; /* Initialize to keep gcc happy. */
2917 /* Suppress error messages. */
2918 saved_gdb_stderr
= gdb_stderr
;
2919 gdb_stderr
= &null_stream
;
2921 /* Call parse_and_eval_type() without fear of longjmp()s. */
2924 type
= parse_and_eval_type (p
, length
);
2926 catch (const gdb_exception_error
&except
)
2928 type
= builtin_type (gdbarch
)->builtin_void
;
2931 /* Stop suppressing error messages. */
2932 gdb_stderr
= saved_gdb_stderr
;
2937 /* Ugly hack to convert method stubs into method types.
2939 He ain't kiddin'. This demangles the name of the method into a
2940 string including argument types, parses out each argument type,
2941 generates a string casting a zero to that type, evaluates the
2942 string, and stuffs the resulting type into an argtype vector!!!
2943 Then it knows the type of the whole function (including argument
2944 types for overloading), which info used to be in the stab's but was
2945 removed to hack back the space required for them. */
2948 check_stub_method (struct type
*type
, int method_id
, int signature_id
)
2950 struct gdbarch
*gdbarch
= get_type_arch (type
);
2952 char *mangled_name
= gdb_mangle_name (type
, method_id
, signature_id
);
2953 char *demangled_name
= gdb_demangle (mangled_name
,
2954 DMGL_PARAMS
| DMGL_ANSI
);
2955 char *argtypetext
, *p
;
2956 int depth
= 0, argcount
= 1;
2957 struct field
*argtypes
;
2960 /* Make sure we got back a function string that we can use. */
2962 p
= strchr (demangled_name
, '(');
2966 if (demangled_name
== NULL
|| p
== NULL
)
2967 error (_("Internal: Cannot demangle mangled name `%s'."),
2970 /* Now, read in the parameters that define this type. */
2975 if (*p
== '(' || *p
== '<')
2979 else if (*p
== ')' || *p
== '>')
2983 else if (*p
== ',' && depth
== 0)
2991 /* If we read one argument and it was ``void'', don't count it. */
2992 if (startswith (argtypetext
, "(void)"))
2995 /* We need one extra slot, for the THIS pointer. */
2997 argtypes
= (struct field
*)
2998 TYPE_ALLOC (type
, (argcount
+ 1) * sizeof (struct field
));
3001 /* Add THIS pointer for non-static methods. */
3002 f
= TYPE_FN_FIELDLIST1 (type
, method_id
);
3003 if (TYPE_FN_FIELD_STATIC_P (f
, signature_id
))
3007 argtypes
[0].type
= lookup_pointer_type (type
);
3011 if (*p
!= ')') /* () means no args, skip while. */
3016 if (depth
<= 0 && (*p
== ',' || *p
== ')'))
3018 /* Avoid parsing of ellipsis, they will be handled below.
3019 Also avoid ``void'' as above. */
3020 if (strncmp (argtypetext
, "...", p
- argtypetext
) != 0
3021 && strncmp (argtypetext
, "void", p
- argtypetext
) != 0)
3023 argtypes
[argcount
].type
=
3024 safe_parse_type (gdbarch
, argtypetext
, p
- argtypetext
);
3027 argtypetext
= p
+ 1;
3030 if (*p
== '(' || *p
== '<')
3034 else if (*p
== ')' || *p
== '>')
3043 TYPE_FN_FIELD_PHYSNAME (f
, signature_id
) = mangled_name
;
3045 /* Now update the old "stub" type into a real type. */
3046 mtype
= TYPE_FN_FIELD_TYPE (f
, signature_id
);
3047 /* MTYPE may currently be a function (TYPE_CODE_FUNC).
3048 We want a method (TYPE_CODE_METHOD). */
3049 smash_to_method_type (mtype
, type
, TYPE_TARGET_TYPE (mtype
),
3050 argtypes
, argcount
, p
[-2] == '.');
3051 TYPE_STUB (mtype
) = 0;
3052 TYPE_FN_FIELD_STUB (f
, signature_id
) = 0;
3054 xfree (demangled_name
);
3057 /* This is the external interface to check_stub_method, above. This
3058 function unstubs all of the signatures for TYPE's METHOD_ID method
3059 name. After calling this function TYPE_FN_FIELD_STUB will be
3060 cleared for each signature and TYPE_FN_FIELDLIST_NAME will be
3063 This function unfortunately can not die until stabs do. */
3066 check_stub_method_group (struct type
*type
, int method_id
)
3068 int len
= TYPE_FN_FIELDLIST_LENGTH (type
, method_id
);
3069 struct fn_field
*f
= TYPE_FN_FIELDLIST1 (type
, method_id
);
3071 for (int j
= 0; j
< len
; j
++)
3073 if (TYPE_FN_FIELD_STUB (f
, j
))
3074 check_stub_method (type
, method_id
, j
);
3078 /* Ensure it is in .rodata (if available) by working around GCC PR 44690. */
3079 const struct cplus_struct_type cplus_struct_default
= { };
3082 allocate_cplus_struct_type (struct type
*type
)
3084 if (HAVE_CPLUS_STRUCT (type
))
3085 /* Structure was already allocated. Nothing more to do. */
3088 TYPE_SPECIFIC_FIELD (type
) = TYPE_SPECIFIC_CPLUS_STUFF
;
3089 TYPE_RAW_CPLUS_SPECIFIC (type
) = (struct cplus_struct_type
*)
3090 TYPE_ALLOC (type
, sizeof (struct cplus_struct_type
));
3091 *(TYPE_RAW_CPLUS_SPECIFIC (type
)) = cplus_struct_default
;
3092 set_type_vptr_fieldno (type
, -1);
3095 const struct gnat_aux_type gnat_aux_default
=
3098 /* Set the TYPE's type-specific kind to TYPE_SPECIFIC_GNAT_STUFF,
3099 and allocate the associated gnat-specific data. The gnat-specific
3100 data is also initialized to gnat_aux_default. */
3103 allocate_gnat_aux_type (struct type
*type
)
3105 TYPE_SPECIFIC_FIELD (type
) = TYPE_SPECIFIC_GNAT_STUFF
;
3106 TYPE_GNAT_SPECIFIC (type
) = (struct gnat_aux_type
*)
3107 TYPE_ALLOC (type
, sizeof (struct gnat_aux_type
));
3108 *(TYPE_GNAT_SPECIFIC (type
)) = gnat_aux_default
;
3111 /* Helper function to initialize a newly allocated type. Set type code
3112 to CODE and initialize the type-specific fields accordingly. */
3115 set_type_code (struct type
*type
, enum type_code code
)
3117 TYPE_CODE (type
) = code
;
3121 case TYPE_CODE_STRUCT
:
3122 case TYPE_CODE_UNION
:
3123 case TYPE_CODE_NAMESPACE
:
3124 INIT_CPLUS_SPECIFIC (type
);
3127 TYPE_SPECIFIC_FIELD (type
) = TYPE_SPECIFIC_FLOATFORMAT
;
3129 case TYPE_CODE_FUNC
:
3130 INIT_FUNC_SPECIFIC (type
);
3135 /* Helper function to verify floating-point format and size.
3136 BIT is the type size in bits; if BIT equals -1, the size is
3137 determined by the floatformat. Returns size to be used. */
3140 verify_floatformat (int bit
, const struct floatformat
*floatformat
)
3142 gdb_assert (floatformat
!= NULL
);
3145 bit
= floatformat
->totalsize
;
3147 gdb_assert (bit
>= 0);
3148 gdb_assert (bit
>= floatformat
->totalsize
);
3153 /* Return the floating-point format for a floating-point variable of
3156 const struct floatformat
*
3157 floatformat_from_type (const struct type
*type
)
3159 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_FLT
);
3160 gdb_assert (TYPE_FLOATFORMAT (type
));
3161 return TYPE_FLOATFORMAT (type
);
3164 /* Helper function to initialize the standard scalar types.
3166 If NAME is non-NULL, then it is used to initialize the type name.
3167 Note that NAME is not copied; it is required to have a lifetime at
3168 least as long as OBJFILE. */
3171 init_type (struct objfile
*objfile
, enum type_code code
, int bit
,
3176 type
= alloc_type (objfile
);
3177 set_type_code (type
, code
);
3178 gdb_assert ((bit
% TARGET_CHAR_BIT
) == 0);
3179 TYPE_LENGTH (type
) = bit
/ TARGET_CHAR_BIT
;
3180 TYPE_NAME (type
) = name
;
3185 /* Allocate a TYPE_CODE_ERROR type structure associated with OBJFILE,
3186 to use with variables that have no debug info. NAME is the type
3189 static struct type
*
3190 init_nodebug_var_type (struct objfile
*objfile
, const char *name
)
3192 return init_type (objfile
, TYPE_CODE_ERROR
, 0, name
);
3195 /* Allocate a TYPE_CODE_INT type structure associated with OBJFILE.
3196 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
3197 the type's TYPE_UNSIGNED flag. NAME is the type name. */
3200 init_integer_type (struct objfile
*objfile
,
3201 int bit
, int unsigned_p
, const char *name
)
3205 t
= init_type (objfile
, TYPE_CODE_INT
, bit
, name
);
3207 TYPE_UNSIGNED (t
) = 1;
3212 /* Allocate a TYPE_CODE_CHAR type structure associated with OBJFILE.
3213 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
3214 the type's TYPE_UNSIGNED flag. NAME is the type name. */
3217 init_character_type (struct objfile
*objfile
,
3218 int bit
, int unsigned_p
, const char *name
)
3222 t
= init_type (objfile
, TYPE_CODE_CHAR
, bit
, name
);
3224 TYPE_UNSIGNED (t
) = 1;
3229 /* Allocate a TYPE_CODE_BOOL type structure associated with OBJFILE.
3230 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
3231 the type's TYPE_UNSIGNED flag. NAME is the type name. */
3234 init_boolean_type (struct objfile
*objfile
,
3235 int bit
, int unsigned_p
, const char *name
)
3239 t
= init_type (objfile
, TYPE_CODE_BOOL
, bit
, name
);
3241 TYPE_UNSIGNED (t
) = 1;
3246 /* Allocate a TYPE_CODE_FLT type structure associated with OBJFILE.
3247 BIT is the type size in bits; if BIT equals -1, the size is
3248 determined by the floatformat. NAME is the type name. Set the
3249 TYPE_FLOATFORMAT from FLOATFORMATS. BYTE_ORDER is the byte order
3250 to use. If it is BFD_ENDIAN_UNKNOWN (the default), then the byte
3251 order of the objfile's architecture is used. */
3254 init_float_type (struct objfile
*objfile
,
3255 int bit
, const char *name
,
3256 const struct floatformat
**floatformats
,
3257 enum bfd_endian byte_order
)
3259 if (byte_order
== BFD_ENDIAN_UNKNOWN
)
3261 struct gdbarch
*gdbarch
= objfile
->arch ();
3262 byte_order
= gdbarch_byte_order (gdbarch
);
3264 const struct floatformat
*fmt
= floatformats
[byte_order
];
3267 bit
= verify_floatformat (bit
, fmt
);
3268 t
= init_type (objfile
, TYPE_CODE_FLT
, bit
, name
);
3269 TYPE_FLOATFORMAT (t
) = fmt
;
3274 /* Allocate a TYPE_CODE_DECFLOAT type structure associated with OBJFILE.
3275 BIT is the type size in bits. NAME is the type name. */
3278 init_decfloat_type (struct objfile
*objfile
, int bit
, const char *name
)
3282 t
= init_type (objfile
, TYPE_CODE_DECFLOAT
, bit
, name
);
3286 /* Allocate a TYPE_CODE_COMPLEX type structure. NAME is the type
3287 name. TARGET_TYPE is the component type. */
3290 init_complex_type (const char *name
, struct type
*target_type
)
3294 gdb_assert (TYPE_CODE (target_type
) == TYPE_CODE_INT
3295 || TYPE_CODE (target_type
) == TYPE_CODE_FLT
);
3297 if (TYPE_MAIN_TYPE (target_type
)->flds_bnds
.complex_type
== nullptr)
3299 if (name
== nullptr)
3302 = (char *) TYPE_ALLOC (target_type
,
3303 strlen (TYPE_NAME (target_type
))
3304 + strlen ("_Complex ") + 1);
3305 strcpy (new_name
, "_Complex ");
3306 strcat (new_name
, TYPE_NAME (target_type
));
3310 t
= alloc_type_copy (target_type
);
3311 set_type_code (t
, TYPE_CODE_COMPLEX
);
3312 TYPE_LENGTH (t
) = 2 * TYPE_LENGTH (target_type
);
3313 TYPE_NAME (t
) = name
;
3315 TYPE_TARGET_TYPE (t
) = target_type
;
3316 TYPE_MAIN_TYPE (target_type
)->flds_bnds
.complex_type
= t
;
3319 return TYPE_MAIN_TYPE (target_type
)->flds_bnds
.complex_type
;
3322 /* Allocate a TYPE_CODE_PTR type structure associated with OBJFILE.
3323 BIT is the pointer type size in bits. NAME is the type name.
3324 TARGET_TYPE is the pointer target type. Always sets the pointer type's
3325 TYPE_UNSIGNED flag. */
3328 init_pointer_type (struct objfile
*objfile
,
3329 int bit
, const char *name
, struct type
*target_type
)
3333 t
= init_type (objfile
, TYPE_CODE_PTR
, bit
, name
);
3334 TYPE_TARGET_TYPE (t
) = target_type
;
3335 TYPE_UNSIGNED (t
) = 1;
3339 /* See gdbtypes.h. */
3342 type_raw_align (struct type
*type
)
3344 if (type
->align_log2
!= 0)
3345 return 1 << (type
->align_log2
- 1);
3349 /* See gdbtypes.h. */
3352 type_align (struct type
*type
)
3354 /* Check alignment provided in the debug information. */
3355 unsigned raw_align
= type_raw_align (type
);
3359 /* Allow the architecture to provide an alignment. */
3360 struct gdbarch
*arch
= get_type_arch (type
);
3361 ULONGEST align
= gdbarch_type_align (arch
, type
);
3365 switch (TYPE_CODE (type
))
3368 case TYPE_CODE_FUNC
:
3369 case TYPE_CODE_FLAGS
:
3371 case TYPE_CODE_RANGE
:
3373 case TYPE_CODE_ENUM
:
3375 case TYPE_CODE_RVALUE_REF
:
3376 case TYPE_CODE_CHAR
:
3377 case TYPE_CODE_BOOL
:
3378 case TYPE_CODE_DECFLOAT
:
3379 case TYPE_CODE_METHODPTR
:
3380 case TYPE_CODE_MEMBERPTR
:
3381 align
= type_length_units (check_typedef (type
));
3384 case TYPE_CODE_ARRAY
:
3385 case TYPE_CODE_COMPLEX
:
3386 case TYPE_CODE_TYPEDEF
:
3387 align
= type_align (TYPE_TARGET_TYPE (type
));
3390 case TYPE_CODE_STRUCT
:
3391 case TYPE_CODE_UNION
:
3393 int number_of_non_static_fields
= 0;
3394 for (unsigned i
= 0; i
< TYPE_NFIELDS (type
); ++i
)
3396 if (!field_is_static (&TYPE_FIELD (type
, i
)))
3398 number_of_non_static_fields
++;
3399 ULONGEST f_align
= type_align (TYPE_FIELD_TYPE (type
, i
));
3402 /* Don't pretend we know something we don't. */
3406 if (f_align
> align
)
3410 /* A struct with no fields, or with only static fields has an
3412 if (number_of_non_static_fields
== 0)
3418 case TYPE_CODE_STRING
:
3419 /* Not sure what to do here, and these can't appear in C or C++
3423 case TYPE_CODE_VOID
:
3427 case TYPE_CODE_ERROR
:
3428 case TYPE_CODE_METHOD
:
3433 if ((align
& (align
- 1)) != 0)
3435 /* Not a power of 2, so pass. */
3442 /* See gdbtypes.h. */
3445 set_type_align (struct type
*type
, ULONGEST align
)
3447 /* Must be a power of 2. Zero is ok. */
3448 gdb_assert ((align
& (align
- 1)) == 0);
3450 unsigned result
= 0;
3457 if (result
>= (1 << TYPE_ALIGN_BITS
))
3460 type
->align_log2
= result
;
3465 /* Queries on types. */
3468 can_dereference (struct type
*t
)
3470 /* FIXME: Should we return true for references as well as
3472 t
= check_typedef (t
);
3475 && TYPE_CODE (t
) == TYPE_CODE_PTR
3476 && TYPE_CODE (TYPE_TARGET_TYPE (t
)) != TYPE_CODE_VOID
);
3480 is_integral_type (struct type
*t
)
3482 t
= check_typedef (t
);
3485 && ((TYPE_CODE (t
) == TYPE_CODE_INT
)
3486 || (TYPE_CODE (t
) == TYPE_CODE_ENUM
)
3487 || (TYPE_CODE (t
) == TYPE_CODE_FLAGS
)
3488 || (TYPE_CODE (t
) == TYPE_CODE_CHAR
)
3489 || (TYPE_CODE (t
) == TYPE_CODE_RANGE
)
3490 || (TYPE_CODE (t
) == TYPE_CODE_BOOL
)));
3494 is_floating_type (struct type
*t
)
3496 t
= check_typedef (t
);
3499 && ((TYPE_CODE (t
) == TYPE_CODE_FLT
)
3500 || (TYPE_CODE (t
) == TYPE_CODE_DECFLOAT
)));
3503 /* Return true if TYPE is scalar. */
3506 is_scalar_type (struct type
*type
)
3508 type
= check_typedef (type
);
3510 switch (TYPE_CODE (type
))
3512 case TYPE_CODE_ARRAY
:
3513 case TYPE_CODE_STRUCT
:
3514 case TYPE_CODE_UNION
:
3516 case TYPE_CODE_STRING
:
3523 /* Return true if T is scalar, or a composite type which in practice has
3524 the memory layout of a scalar type. E.g., an array or struct with only
3525 one scalar element inside it, or a union with only scalar elements. */
3528 is_scalar_type_recursive (struct type
*t
)
3530 t
= check_typedef (t
);
3532 if (is_scalar_type (t
))
3534 /* Are we dealing with an array or string of known dimensions? */
3535 else if ((TYPE_CODE (t
) == TYPE_CODE_ARRAY
3536 || TYPE_CODE (t
) == TYPE_CODE_STRING
) && TYPE_NFIELDS (t
) == 1
3537 && TYPE_CODE (TYPE_INDEX_TYPE (t
)) == TYPE_CODE_RANGE
)
3539 LONGEST low_bound
, high_bound
;
3540 struct type
*elt_type
= check_typedef (TYPE_TARGET_TYPE (t
));
3542 get_discrete_bounds (TYPE_INDEX_TYPE (t
), &low_bound
, &high_bound
);
3544 return high_bound
== low_bound
&& is_scalar_type_recursive (elt_type
);
3546 /* Are we dealing with a struct with one element? */
3547 else if (TYPE_CODE (t
) == TYPE_CODE_STRUCT
&& TYPE_NFIELDS (t
) == 1)
3548 return is_scalar_type_recursive (TYPE_FIELD_TYPE (t
, 0));
3549 else if (TYPE_CODE (t
) == TYPE_CODE_UNION
)
3551 int i
, n
= TYPE_NFIELDS (t
);
3553 /* If all elements of the union are scalar, then the union is scalar. */
3554 for (i
= 0; i
< n
; i
++)
3555 if (!is_scalar_type_recursive (TYPE_FIELD_TYPE (t
, i
)))
3564 /* Return true is T is a class or a union. False otherwise. */
3567 class_or_union_p (const struct type
*t
)
3569 return (TYPE_CODE (t
) == TYPE_CODE_STRUCT
3570 || TYPE_CODE (t
) == TYPE_CODE_UNION
);
3573 /* A helper function which returns true if types A and B represent the
3574 "same" class type. This is true if the types have the same main
3575 type, or the same name. */
3578 class_types_same_p (const struct type
*a
, const struct type
*b
)
3580 return (TYPE_MAIN_TYPE (a
) == TYPE_MAIN_TYPE (b
)
3581 || (TYPE_NAME (a
) && TYPE_NAME (b
)
3582 && !strcmp (TYPE_NAME (a
), TYPE_NAME (b
))));
3585 /* If BASE is an ancestor of DCLASS return the distance between them.
3586 otherwise return -1;
3590 class B: public A {};
3591 class C: public B {};
3594 distance_to_ancestor (A, A, 0) = 0
3595 distance_to_ancestor (A, B, 0) = 1
3596 distance_to_ancestor (A, C, 0) = 2
3597 distance_to_ancestor (A, D, 0) = 3
3599 If PUBLIC is 1 then only public ancestors are considered,
3600 and the function returns the distance only if BASE is a public ancestor
3604 distance_to_ancestor (A, D, 1) = -1. */
3607 distance_to_ancestor (struct type
*base
, struct type
*dclass
, int is_public
)
3612 base
= check_typedef (base
);
3613 dclass
= check_typedef (dclass
);
3615 if (class_types_same_p (base
, dclass
))
3618 for (i
= 0; i
< TYPE_N_BASECLASSES (dclass
); i
++)
3620 if (is_public
&& ! BASETYPE_VIA_PUBLIC (dclass
, i
))
3623 d
= distance_to_ancestor (base
, TYPE_BASECLASS (dclass
, i
), is_public
);
3631 /* Check whether BASE is an ancestor or base class or DCLASS
3632 Return 1 if so, and 0 if not.
3633 Note: If BASE and DCLASS are of the same type, this function
3634 will return 1. So for some class A, is_ancestor (A, A) will
3638 is_ancestor (struct type
*base
, struct type
*dclass
)
3640 return distance_to_ancestor (base
, dclass
, 0) >= 0;
3643 /* Like is_ancestor, but only returns true when BASE is a public
3644 ancestor of DCLASS. */
3647 is_public_ancestor (struct type
*base
, struct type
*dclass
)
3649 return distance_to_ancestor (base
, dclass
, 1) >= 0;
3652 /* A helper function for is_unique_ancestor. */
3655 is_unique_ancestor_worker (struct type
*base
, struct type
*dclass
,
3657 const gdb_byte
*valaddr
, int embedded_offset
,
3658 CORE_ADDR address
, struct value
*val
)
3662 base
= check_typedef (base
);
3663 dclass
= check_typedef (dclass
);
3665 for (i
= 0; i
< TYPE_N_BASECLASSES (dclass
) && count
< 2; ++i
)
3670 iter
= check_typedef (TYPE_BASECLASS (dclass
, i
));
3672 this_offset
= baseclass_offset (dclass
, i
, valaddr
, embedded_offset
,
3675 if (class_types_same_p (base
, iter
))
3677 /* If this is the first subclass, set *OFFSET and set count
3678 to 1. Otherwise, if this is at the same offset as
3679 previous instances, do nothing. Otherwise, increment
3683 *offset
= this_offset
;
3686 else if (this_offset
== *offset
)
3694 count
+= is_unique_ancestor_worker (base
, iter
, offset
,
3696 embedded_offset
+ this_offset
,
3703 /* Like is_ancestor, but only returns true if BASE is a unique base
3704 class of the type of VAL. */
3707 is_unique_ancestor (struct type
*base
, struct value
*val
)
3711 return is_unique_ancestor_worker (base
, value_type (val
), &offset
,
3712 value_contents_for_printing (val
),
3713 value_embedded_offset (val
),
3714 value_address (val
), val
) == 1;
3717 /* See gdbtypes.h. */
3720 type_byte_order (const struct type
*type
)
3722 bfd_endian byteorder
= gdbarch_byte_order (get_type_arch (type
));
3723 if (TYPE_ENDIANITY_NOT_DEFAULT (type
))
3725 if (byteorder
== BFD_ENDIAN_BIG
)
3726 return BFD_ENDIAN_LITTLE
;
3729 gdb_assert (byteorder
== BFD_ENDIAN_LITTLE
);
3730 return BFD_ENDIAN_BIG
;
3738 /* Overload resolution. */
3740 /* Return the sum of the rank of A with the rank of B. */
3743 sum_ranks (struct rank a
, struct rank b
)
3746 c
.rank
= a
.rank
+ b
.rank
;
3747 c
.subrank
= a
.subrank
+ b
.subrank
;
3751 /* Compare rank A and B and return:
3753 1 if a is better than b
3754 -1 if b is better than a. */
3757 compare_ranks (struct rank a
, struct rank b
)
3759 if (a
.rank
== b
.rank
)
3761 if (a
.subrank
== b
.subrank
)
3763 if (a
.subrank
< b
.subrank
)
3765 if (a
.subrank
> b
.subrank
)
3769 if (a
.rank
< b
.rank
)
3772 /* a.rank > b.rank */
3776 /* Functions for overload resolution begin here. */
3778 /* Compare two badness vectors A and B and return the result.
3779 0 => A and B are identical
3780 1 => A and B are incomparable
3781 2 => A is better than B
3782 3 => A is worse than B */
3785 compare_badness (const badness_vector
&a
, const badness_vector
&b
)
3789 short found_pos
= 0; /* any positives in c? */
3790 short found_neg
= 0; /* any negatives in c? */
3792 /* differing sizes => incomparable */
3793 if (a
.size () != b
.size ())
3796 /* Subtract b from a */
3797 for (i
= 0; i
< a
.size (); i
++)
3799 tmp
= compare_ranks (b
[i
], a
[i
]);
3809 return 1; /* incomparable */
3811 return 3; /* A > B */
3817 return 2; /* A < B */
3819 return 0; /* A == B */
3823 /* Rank a function by comparing its parameter types (PARMS), to the
3824 types of an argument list (ARGS). Return the badness vector. This
3825 has ARGS.size() + 1 entries. */
3828 rank_function (gdb::array_view
<type
*> parms
,
3829 gdb::array_view
<value
*> args
)
3831 /* add 1 for the length-match rank. */
3833 bv
.reserve (1 + args
.size ());
3835 /* First compare the lengths of the supplied lists.
3836 If there is a mismatch, set it to a high value. */
3838 /* pai/1997-06-03 FIXME: when we have debug info about default
3839 arguments and ellipsis parameter lists, we should consider those
3840 and rank the length-match more finely. */
3842 bv
.push_back ((args
.size () != parms
.size ())
3843 ? LENGTH_MISMATCH_BADNESS
3844 : EXACT_MATCH_BADNESS
);
3846 /* Now rank all the parameters of the candidate function. */
3847 size_t min_len
= std::min (parms
.size (), args
.size ());
3849 for (size_t i
= 0; i
< min_len
; i
++)
3850 bv
.push_back (rank_one_type (parms
[i
], value_type (args
[i
]),
3853 /* If more arguments than parameters, add dummy entries. */
3854 for (size_t i
= min_len
; i
< args
.size (); i
++)
3855 bv
.push_back (TOO_FEW_PARAMS_BADNESS
);
3860 /* Compare the names of two integer types, assuming that any sign
3861 qualifiers have been checked already. We do it this way because
3862 there may be an "int" in the name of one of the types. */
3865 integer_types_same_name_p (const char *first
, const char *second
)
3867 int first_p
, second_p
;
3869 /* If both are shorts, return 1; if neither is a short, keep
3871 first_p
= (strstr (first
, "short") != NULL
);
3872 second_p
= (strstr (second
, "short") != NULL
);
3873 if (first_p
&& second_p
)
3875 if (first_p
|| second_p
)
3878 /* Likewise for long. */
3879 first_p
= (strstr (first
, "long") != NULL
);
3880 second_p
= (strstr (second
, "long") != NULL
);
3881 if (first_p
&& second_p
)
3883 if (first_p
|| second_p
)
3886 /* Likewise for char. */
3887 first_p
= (strstr (first
, "char") != NULL
);
3888 second_p
= (strstr (second
, "char") != NULL
);
3889 if (first_p
&& second_p
)
3891 if (first_p
|| second_p
)
3894 /* They must both be ints. */
3898 /* Compares type A to type B. Returns true if they represent the same
3899 type, false otherwise. */
3902 types_equal (struct type
*a
, struct type
*b
)
3904 /* Identical type pointers. */
3905 /* However, this still doesn't catch all cases of same type for b
3906 and a. The reason is that builtin types are different from
3907 the same ones constructed from the object. */
3911 /* Resolve typedefs */
3912 if (TYPE_CODE (a
) == TYPE_CODE_TYPEDEF
)
3913 a
= check_typedef (a
);
3914 if (TYPE_CODE (b
) == TYPE_CODE_TYPEDEF
)
3915 b
= check_typedef (b
);
3917 /* If after resolving typedefs a and b are not of the same type
3918 code then they are not equal. */
3919 if (TYPE_CODE (a
) != TYPE_CODE (b
))
3922 /* If a and b are both pointers types or both reference types then
3923 they are equal of the same type iff the objects they refer to are
3924 of the same type. */
3925 if (TYPE_CODE (a
) == TYPE_CODE_PTR
3926 || TYPE_CODE (a
) == TYPE_CODE_REF
)
3927 return types_equal (TYPE_TARGET_TYPE (a
),
3928 TYPE_TARGET_TYPE (b
));
3930 /* Well, damnit, if the names are exactly the same, I'll say they
3931 are exactly the same. This happens when we generate method
3932 stubs. The types won't point to the same address, but they
3933 really are the same. */
3935 if (TYPE_NAME (a
) && TYPE_NAME (b
)
3936 && strcmp (TYPE_NAME (a
), TYPE_NAME (b
)) == 0)
3939 /* Check if identical after resolving typedefs. */
3943 /* Two function types are equal if their argument and return types
3945 if (TYPE_CODE (a
) == TYPE_CODE_FUNC
)
3949 if (TYPE_NFIELDS (a
) != TYPE_NFIELDS (b
))
3952 if (!types_equal (TYPE_TARGET_TYPE (a
), TYPE_TARGET_TYPE (b
)))
3955 for (i
= 0; i
< TYPE_NFIELDS (a
); ++i
)
3956 if (!types_equal (TYPE_FIELD_TYPE (a
, i
), TYPE_FIELD_TYPE (b
, i
)))
3965 /* Deep comparison of types. */
3967 /* An entry in the type-equality bcache. */
3969 struct type_equality_entry
3971 type_equality_entry (struct type
*t1
, struct type
*t2
)
3977 struct type
*type1
, *type2
;
3980 /* A helper function to compare two strings. Returns true if they are
3981 the same, false otherwise. Handles NULLs properly. */
3984 compare_maybe_null_strings (const char *s
, const char *t
)
3986 if (s
== NULL
|| t
== NULL
)
3988 return strcmp (s
, t
) == 0;
3991 /* A helper function for check_types_worklist that checks two types for
3992 "deep" equality. Returns true if the types are considered the
3993 same, false otherwise. */
3996 check_types_equal (struct type
*type1
, struct type
*type2
,
3997 std::vector
<type_equality_entry
> *worklist
)
3999 type1
= check_typedef (type1
);
4000 type2
= check_typedef (type2
);
4005 if (TYPE_CODE (type1
) != TYPE_CODE (type2
)
4006 || TYPE_LENGTH (type1
) != TYPE_LENGTH (type2
)
4007 || TYPE_UNSIGNED (type1
) != TYPE_UNSIGNED (type2
)
4008 || TYPE_NOSIGN (type1
) != TYPE_NOSIGN (type2
)
4009 || TYPE_ENDIANITY_NOT_DEFAULT (type1
) != TYPE_ENDIANITY_NOT_DEFAULT (type2
)
4010 || TYPE_VARARGS (type1
) != TYPE_VARARGS (type2
)
4011 || TYPE_VECTOR (type1
) != TYPE_VECTOR (type2
)
4012 || TYPE_NOTTEXT (type1
) != TYPE_NOTTEXT (type2
)
4013 || TYPE_INSTANCE_FLAGS (type1
) != TYPE_INSTANCE_FLAGS (type2
)
4014 || TYPE_NFIELDS (type1
) != TYPE_NFIELDS (type2
))
4017 if (!compare_maybe_null_strings (TYPE_NAME (type1
), TYPE_NAME (type2
)))
4019 if (!compare_maybe_null_strings (TYPE_NAME (type1
), TYPE_NAME (type2
)))
4022 if (TYPE_CODE (type1
) == TYPE_CODE_RANGE
)
4024 if (*TYPE_RANGE_DATA (type1
) != *TYPE_RANGE_DATA (type2
))
4031 for (i
= 0; i
< TYPE_NFIELDS (type1
); ++i
)
4033 const struct field
*field1
= &TYPE_FIELD (type1
, i
);
4034 const struct field
*field2
= &TYPE_FIELD (type2
, i
);
4036 if (FIELD_ARTIFICIAL (*field1
) != FIELD_ARTIFICIAL (*field2
)
4037 || FIELD_BITSIZE (*field1
) != FIELD_BITSIZE (*field2
)
4038 || FIELD_LOC_KIND (*field1
) != FIELD_LOC_KIND (*field2
))
4040 if (!compare_maybe_null_strings (FIELD_NAME (*field1
),
4041 FIELD_NAME (*field2
)))
4043 switch (FIELD_LOC_KIND (*field1
))
4045 case FIELD_LOC_KIND_BITPOS
:
4046 if (FIELD_BITPOS (*field1
) != FIELD_BITPOS (*field2
))
4049 case FIELD_LOC_KIND_ENUMVAL
:
4050 if (FIELD_ENUMVAL (*field1
) != FIELD_ENUMVAL (*field2
))
4053 case FIELD_LOC_KIND_PHYSADDR
:
4054 if (FIELD_STATIC_PHYSADDR (*field1
)
4055 != FIELD_STATIC_PHYSADDR (*field2
))
4058 case FIELD_LOC_KIND_PHYSNAME
:
4059 if (!compare_maybe_null_strings (FIELD_STATIC_PHYSNAME (*field1
),
4060 FIELD_STATIC_PHYSNAME (*field2
)))
4063 case FIELD_LOC_KIND_DWARF_BLOCK
:
4065 struct dwarf2_locexpr_baton
*block1
, *block2
;
4067 block1
= FIELD_DWARF_BLOCK (*field1
);
4068 block2
= FIELD_DWARF_BLOCK (*field2
);
4069 if (block1
->per_cu
!= block2
->per_cu
4070 || block1
->size
!= block2
->size
4071 || memcmp (block1
->data
, block2
->data
, block1
->size
) != 0)
4076 internal_error (__FILE__
, __LINE__
, _("Unsupported field kind "
4077 "%d by check_types_equal"),
4078 FIELD_LOC_KIND (*field1
));
4081 worklist
->emplace_back (FIELD_TYPE (*field1
), FIELD_TYPE (*field2
));
4085 if (TYPE_TARGET_TYPE (type1
) != NULL
)
4087 if (TYPE_TARGET_TYPE (type2
) == NULL
)
4090 worklist
->emplace_back (TYPE_TARGET_TYPE (type1
),
4091 TYPE_TARGET_TYPE (type2
));
4093 else if (TYPE_TARGET_TYPE (type2
) != NULL
)
4099 /* Check types on a worklist for equality. Returns false if any pair
4100 is not equal, true if they are all considered equal. */
4103 check_types_worklist (std::vector
<type_equality_entry
> *worklist
,
4106 while (!worklist
->empty ())
4110 struct type_equality_entry entry
= std::move (worklist
->back ());
4111 worklist
->pop_back ();
4113 /* If the type pair has already been visited, we know it is
4115 cache
->insert (&entry
, sizeof (entry
), &added
);
4119 if (!check_types_equal (entry
.type1
, entry
.type2
, worklist
))
4126 /* Return true if types TYPE1 and TYPE2 are equal, as determined by a
4127 "deep comparison". Otherwise return false. */
4130 types_deeply_equal (struct type
*type1
, struct type
*type2
)
4132 std::vector
<type_equality_entry
> worklist
;
4134 gdb_assert (type1
!= NULL
&& type2
!= NULL
);
4136 /* Early exit for the simple case. */
4140 gdb::bcache
cache (nullptr, nullptr);
4141 worklist
.emplace_back (type1
, type2
);
4142 return check_types_worklist (&worklist
, &cache
);
4145 /* Allocated status of type TYPE. Return zero if type TYPE is allocated.
4146 Otherwise return one. */
4149 type_not_allocated (const struct type
*type
)
4151 struct dynamic_prop
*prop
= TYPE_ALLOCATED_PROP (type
);
4153 return (prop
&& TYPE_DYN_PROP_KIND (prop
) == PROP_CONST
4154 && !TYPE_DYN_PROP_ADDR (prop
));
4157 /* Associated status of type TYPE. Return zero if type TYPE is associated.
4158 Otherwise return one. */
4161 type_not_associated (const struct type
*type
)
4163 struct dynamic_prop
*prop
= TYPE_ASSOCIATED_PROP (type
);
4165 return (prop
&& TYPE_DYN_PROP_KIND (prop
) == PROP_CONST
4166 && !TYPE_DYN_PROP_ADDR (prop
));
4169 /* rank_one_type helper for when PARM's type code is TYPE_CODE_PTR. */
4172 rank_one_type_parm_ptr (struct type
*parm
, struct type
*arg
, struct value
*value
)
4174 struct rank rank
= {0,0};
4176 switch (TYPE_CODE (arg
))
4180 /* Allowed pointer conversions are:
4181 (a) pointer to void-pointer conversion. */
4182 if (TYPE_CODE (TYPE_TARGET_TYPE (parm
)) == TYPE_CODE_VOID
)
4183 return VOID_PTR_CONVERSION_BADNESS
;
4185 /* (b) pointer to ancestor-pointer conversion. */
4186 rank
.subrank
= distance_to_ancestor (TYPE_TARGET_TYPE (parm
),
4187 TYPE_TARGET_TYPE (arg
),
4189 if (rank
.subrank
>= 0)
4190 return sum_ranks (BASE_PTR_CONVERSION_BADNESS
, rank
);
4192 return INCOMPATIBLE_TYPE_BADNESS
;
4193 case TYPE_CODE_ARRAY
:
4195 struct type
*t1
= TYPE_TARGET_TYPE (parm
);
4196 struct type
*t2
= TYPE_TARGET_TYPE (arg
);
4198 if (types_equal (t1
, t2
))
4200 /* Make sure they are CV equal. */
4201 if (TYPE_CONST (t1
) != TYPE_CONST (t2
))
4202 rank
.subrank
|= CV_CONVERSION_CONST
;
4203 if (TYPE_VOLATILE (t1
) != TYPE_VOLATILE (t2
))
4204 rank
.subrank
|= CV_CONVERSION_VOLATILE
;
4205 if (rank
.subrank
!= 0)
4206 return sum_ranks (CV_CONVERSION_BADNESS
, rank
);
4207 return EXACT_MATCH_BADNESS
;
4209 return INCOMPATIBLE_TYPE_BADNESS
;
4211 case TYPE_CODE_FUNC
:
4212 return rank_one_type (TYPE_TARGET_TYPE (parm
), arg
, NULL
);
4214 if (value
!= NULL
&& TYPE_CODE (value_type (value
)) == TYPE_CODE_INT
)
4216 if (value_as_long (value
) == 0)
4218 /* Null pointer conversion: allow it to be cast to a pointer.
4219 [4.10.1 of C++ standard draft n3290] */
4220 return NULL_POINTER_CONVERSION_BADNESS
;
4224 /* If type checking is disabled, allow the conversion. */
4225 if (!strict_type_checking
)
4226 return NS_INTEGER_POINTER_CONVERSION_BADNESS
;
4230 case TYPE_CODE_ENUM
:
4231 case TYPE_CODE_FLAGS
:
4232 case TYPE_CODE_CHAR
:
4233 case TYPE_CODE_RANGE
:
4234 case TYPE_CODE_BOOL
:
4236 return INCOMPATIBLE_TYPE_BADNESS
;
4240 /* rank_one_type helper for when PARM's type code is TYPE_CODE_ARRAY. */
4243 rank_one_type_parm_array (struct type
*parm
, struct type
*arg
, struct value
*value
)
4245 switch (TYPE_CODE (arg
))
4248 case TYPE_CODE_ARRAY
:
4249 return rank_one_type (TYPE_TARGET_TYPE (parm
),
4250 TYPE_TARGET_TYPE (arg
), NULL
);
4252 return INCOMPATIBLE_TYPE_BADNESS
;
4256 /* rank_one_type helper for when PARM's type code is TYPE_CODE_FUNC. */
4259 rank_one_type_parm_func (struct type
*parm
, struct type
*arg
, struct value
*value
)
4261 switch (TYPE_CODE (arg
))
4263 case TYPE_CODE_PTR
: /* funcptr -> func */
4264 return rank_one_type (parm
, TYPE_TARGET_TYPE (arg
), NULL
);
4266 return INCOMPATIBLE_TYPE_BADNESS
;
4270 /* rank_one_type helper for when PARM's type code is TYPE_CODE_INT. */
4273 rank_one_type_parm_int (struct type
*parm
, struct type
*arg
, struct value
*value
)
4275 switch (TYPE_CODE (arg
))
4278 if (TYPE_LENGTH (arg
) == TYPE_LENGTH (parm
))
4280 /* Deal with signed, unsigned, and plain chars and
4281 signed and unsigned ints. */
4282 if (TYPE_NOSIGN (parm
))
4284 /* This case only for character types. */
4285 if (TYPE_NOSIGN (arg
))
4286 return EXACT_MATCH_BADNESS
; /* plain char -> plain char */
4287 else /* signed/unsigned char -> plain char */
4288 return INTEGER_CONVERSION_BADNESS
;
4290 else if (TYPE_UNSIGNED (parm
))
4292 if (TYPE_UNSIGNED (arg
))
4294 /* unsigned int -> unsigned int, or
4295 unsigned long -> unsigned long */
4296 if (integer_types_same_name_p (TYPE_NAME (parm
),
4298 return EXACT_MATCH_BADNESS
;
4299 else if (integer_types_same_name_p (TYPE_NAME (arg
),
4301 && integer_types_same_name_p (TYPE_NAME (parm
),
4303 /* unsigned int -> unsigned long */
4304 return INTEGER_PROMOTION_BADNESS
;
4306 /* unsigned long -> unsigned int */
4307 return INTEGER_CONVERSION_BADNESS
;
4311 if (integer_types_same_name_p (TYPE_NAME (arg
),
4313 && integer_types_same_name_p (TYPE_NAME (parm
),
4315 /* signed long -> unsigned int */
4316 return INTEGER_CONVERSION_BADNESS
;
4318 /* signed int/long -> unsigned int/long */
4319 return INTEGER_CONVERSION_BADNESS
;
4322 else if (!TYPE_NOSIGN (arg
) && !TYPE_UNSIGNED (arg
))
4324 if (integer_types_same_name_p (TYPE_NAME (parm
),
4326 return EXACT_MATCH_BADNESS
;
4327 else if (integer_types_same_name_p (TYPE_NAME (arg
),
4329 && integer_types_same_name_p (TYPE_NAME (parm
),
4331 return INTEGER_PROMOTION_BADNESS
;
4333 return INTEGER_CONVERSION_BADNESS
;
4336 return INTEGER_CONVERSION_BADNESS
;
4338 else if (TYPE_LENGTH (arg
) < TYPE_LENGTH (parm
))
4339 return INTEGER_PROMOTION_BADNESS
;
4341 return INTEGER_CONVERSION_BADNESS
;
4342 case TYPE_CODE_ENUM
:
4343 case TYPE_CODE_FLAGS
:
4344 case TYPE_CODE_CHAR
:
4345 case TYPE_CODE_RANGE
:
4346 case TYPE_CODE_BOOL
:
4347 if (TYPE_DECLARED_CLASS (arg
))
4348 return INCOMPATIBLE_TYPE_BADNESS
;
4349 return INTEGER_PROMOTION_BADNESS
;
4351 return INT_FLOAT_CONVERSION_BADNESS
;
4353 return NS_POINTER_CONVERSION_BADNESS
;
4355 return INCOMPATIBLE_TYPE_BADNESS
;
4359 /* rank_one_type helper for when PARM's type code is TYPE_CODE_ENUM. */
4362 rank_one_type_parm_enum (struct type
*parm
, struct type
*arg
, struct value
*value
)
4364 switch (TYPE_CODE (arg
))
4367 case TYPE_CODE_CHAR
:
4368 case TYPE_CODE_RANGE
:
4369 case TYPE_CODE_BOOL
:
4370 case TYPE_CODE_ENUM
:
4371 if (TYPE_DECLARED_CLASS (parm
) || TYPE_DECLARED_CLASS (arg
))
4372 return INCOMPATIBLE_TYPE_BADNESS
;
4373 return INTEGER_CONVERSION_BADNESS
;
4375 return INT_FLOAT_CONVERSION_BADNESS
;
4377 return INCOMPATIBLE_TYPE_BADNESS
;
4381 /* rank_one_type helper for when PARM's type code is TYPE_CODE_CHAR. */
4384 rank_one_type_parm_char (struct type
*parm
, struct type
*arg
, struct value
*value
)
4386 switch (TYPE_CODE (arg
))
4388 case TYPE_CODE_RANGE
:
4389 case TYPE_CODE_BOOL
:
4390 case TYPE_CODE_ENUM
:
4391 if (TYPE_DECLARED_CLASS (arg
))
4392 return INCOMPATIBLE_TYPE_BADNESS
;
4393 return INTEGER_CONVERSION_BADNESS
;
4395 return INT_FLOAT_CONVERSION_BADNESS
;
4397 if (TYPE_LENGTH (arg
) > TYPE_LENGTH (parm
))
4398 return INTEGER_CONVERSION_BADNESS
;
4399 else if (TYPE_LENGTH (arg
) < TYPE_LENGTH (parm
))
4400 return INTEGER_PROMOTION_BADNESS
;
4402 case TYPE_CODE_CHAR
:
4403 /* Deal with signed, unsigned, and plain chars for C++ and
4404 with int cases falling through from previous case. */
4405 if (TYPE_NOSIGN (parm
))
4407 if (TYPE_NOSIGN (arg
))
4408 return EXACT_MATCH_BADNESS
;
4410 return INTEGER_CONVERSION_BADNESS
;
4412 else if (TYPE_UNSIGNED (parm
))
4414 if (TYPE_UNSIGNED (arg
))
4415 return EXACT_MATCH_BADNESS
;
4417 return INTEGER_PROMOTION_BADNESS
;
4419 else if (!TYPE_NOSIGN (arg
) && !TYPE_UNSIGNED (arg
))
4420 return EXACT_MATCH_BADNESS
;
4422 return INTEGER_CONVERSION_BADNESS
;
4424 return INCOMPATIBLE_TYPE_BADNESS
;
4428 /* rank_one_type helper for when PARM's type code is TYPE_CODE_RANGE. */
4431 rank_one_type_parm_range (struct type
*parm
, struct type
*arg
, struct value
*value
)
4433 switch (TYPE_CODE (arg
))
4436 case TYPE_CODE_CHAR
:
4437 case TYPE_CODE_RANGE
:
4438 case TYPE_CODE_BOOL
:
4439 case TYPE_CODE_ENUM
:
4440 return INTEGER_CONVERSION_BADNESS
;
4442 return INT_FLOAT_CONVERSION_BADNESS
;
4444 return INCOMPATIBLE_TYPE_BADNESS
;
4448 /* rank_one_type helper for when PARM's type code is TYPE_CODE_BOOL. */
4451 rank_one_type_parm_bool (struct type
*parm
, struct type
*arg
, struct value
*value
)
4453 switch (TYPE_CODE (arg
))
4455 /* n3290 draft, section 4.12.1 (conv.bool):
4457 "A prvalue of arithmetic, unscoped enumeration, pointer, or
4458 pointer to member type can be converted to a prvalue of type
4459 bool. A zero value, null pointer value, or null member pointer
4460 value is converted to false; any other value is converted to
4461 true. A prvalue of type std::nullptr_t can be converted to a
4462 prvalue of type bool; the resulting value is false." */
4464 case TYPE_CODE_CHAR
:
4465 case TYPE_CODE_ENUM
:
4467 case TYPE_CODE_MEMBERPTR
:
4469 return BOOL_CONVERSION_BADNESS
;
4470 case TYPE_CODE_RANGE
:
4471 return INCOMPATIBLE_TYPE_BADNESS
;
4472 case TYPE_CODE_BOOL
:
4473 return EXACT_MATCH_BADNESS
;
4475 return INCOMPATIBLE_TYPE_BADNESS
;
4479 /* rank_one_type helper for when PARM's type code is TYPE_CODE_FLOAT. */
4482 rank_one_type_parm_float (struct type
*parm
, struct type
*arg
, struct value
*value
)
4484 switch (TYPE_CODE (arg
))
4487 if (TYPE_LENGTH (arg
) < TYPE_LENGTH (parm
))
4488 return FLOAT_PROMOTION_BADNESS
;
4489 else if (TYPE_LENGTH (arg
) == TYPE_LENGTH (parm
))
4490 return EXACT_MATCH_BADNESS
;
4492 return FLOAT_CONVERSION_BADNESS
;
4494 case TYPE_CODE_BOOL
:
4495 case TYPE_CODE_ENUM
:
4496 case TYPE_CODE_RANGE
:
4497 case TYPE_CODE_CHAR
:
4498 return INT_FLOAT_CONVERSION_BADNESS
;
4500 return INCOMPATIBLE_TYPE_BADNESS
;
4504 /* rank_one_type helper for when PARM's type code is TYPE_CODE_COMPLEX. */
4507 rank_one_type_parm_complex (struct type
*parm
, struct type
*arg
, struct value
*value
)
4509 switch (TYPE_CODE (arg
))
4510 { /* Strictly not needed for C++, but... */
4512 return FLOAT_PROMOTION_BADNESS
;
4513 case TYPE_CODE_COMPLEX
:
4514 return EXACT_MATCH_BADNESS
;
4516 return INCOMPATIBLE_TYPE_BADNESS
;
4520 /* rank_one_type helper for when PARM's type code is TYPE_CODE_STRUCT. */
4523 rank_one_type_parm_struct (struct type
*parm
, struct type
*arg
, struct value
*value
)
4525 struct rank rank
= {0, 0};
4527 switch (TYPE_CODE (arg
))
4529 case TYPE_CODE_STRUCT
:
4530 /* Check for derivation */
4531 rank
.subrank
= distance_to_ancestor (parm
, arg
, 0);
4532 if (rank
.subrank
>= 0)
4533 return sum_ranks (BASE_CONVERSION_BADNESS
, rank
);
4536 return INCOMPATIBLE_TYPE_BADNESS
;
4540 /* rank_one_type helper for when PARM's type code is TYPE_CODE_SET. */
4543 rank_one_type_parm_set (struct type
*parm
, struct type
*arg
, struct value
*value
)
4545 switch (TYPE_CODE (arg
))
4549 return rank_one_type (TYPE_FIELD_TYPE (parm
, 0),
4550 TYPE_FIELD_TYPE (arg
, 0), NULL
);
4552 return INCOMPATIBLE_TYPE_BADNESS
;
4556 /* Compare one type (PARM) for compatibility with another (ARG).
4557 * PARM is intended to be the parameter type of a function; and
4558 * ARG is the supplied argument's type. This function tests if
4559 * the latter can be converted to the former.
4560 * VALUE is the argument's value or NULL if none (or called recursively)
4562 * Return 0 if they are identical types;
4563 * Otherwise, return an integer which corresponds to how compatible
4564 * PARM is to ARG. The higher the return value, the worse the match.
4565 * Generally the "bad" conversions are all uniformly assigned a 100. */
4568 rank_one_type (struct type
*parm
, struct type
*arg
, struct value
*value
)
4570 struct rank rank
= {0,0};
4572 /* Resolve typedefs */
4573 if (TYPE_CODE (parm
) == TYPE_CODE_TYPEDEF
)
4574 parm
= check_typedef (parm
);
4575 if (TYPE_CODE (arg
) == TYPE_CODE_TYPEDEF
)
4576 arg
= check_typedef (arg
);
4578 if (TYPE_IS_REFERENCE (parm
) && value
!= NULL
)
4580 if (VALUE_LVAL (value
) == not_lval
)
4582 /* Rvalues should preferably bind to rvalue references or const
4583 lvalue references. */
4584 if (TYPE_CODE (parm
) == TYPE_CODE_RVALUE_REF
)
4585 rank
.subrank
= REFERENCE_CONVERSION_RVALUE
;
4586 else if (TYPE_CONST (TYPE_TARGET_TYPE (parm
)))
4587 rank
.subrank
= REFERENCE_CONVERSION_CONST_LVALUE
;
4589 return INCOMPATIBLE_TYPE_BADNESS
;
4590 return sum_ranks (rank
, REFERENCE_CONVERSION_BADNESS
);
4594 /* It's illegal to pass an lvalue as an rvalue. */
4595 if (TYPE_CODE (parm
) == TYPE_CODE_RVALUE_REF
)
4596 return INCOMPATIBLE_TYPE_BADNESS
;
4600 if (types_equal (parm
, arg
))
4602 struct type
*t1
= parm
;
4603 struct type
*t2
= arg
;
4605 /* For pointers and references, compare target type. */
4606 if (TYPE_CODE (parm
) == TYPE_CODE_PTR
|| TYPE_IS_REFERENCE (parm
))
4608 t1
= TYPE_TARGET_TYPE (parm
);
4609 t2
= TYPE_TARGET_TYPE (arg
);
4612 /* Make sure they are CV equal, too. */
4613 if (TYPE_CONST (t1
) != TYPE_CONST (t2
))
4614 rank
.subrank
|= CV_CONVERSION_CONST
;
4615 if (TYPE_VOLATILE (t1
) != TYPE_VOLATILE (t2
))
4616 rank
.subrank
|= CV_CONVERSION_VOLATILE
;
4617 if (rank
.subrank
!= 0)
4618 return sum_ranks (CV_CONVERSION_BADNESS
, rank
);
4619 return EXACT_MATCH_BADNESS
;
4622 /* See through references, since we can almost make non-references
4625 if (TYPE_IS_REFERENCE (arg
))
4626 return (sum_ranks (rank_one_type (parm
, TYPE_TARGET_TYPE (arg
), NULL
),
4627 REFERENCE_SEE_THROUGH_BADNESS
));
4628 if (TYPE_IS_REFERENCE (parm
))
4629 return (sum_ranks (rank_one_type (TYPE_TARGET_TYPE (parm
), arg
, NULL
),
4630 REFERENCE_SEE_THROUGH_BADNESS
));
4632 /* Debugging only. */
4633 fprintf_filtered (gdb_stderr
,
4634 "------ Arg is %s [%d], parm is %s [%d]\n",
4635 TYPE_NAME (arg
), TYPE_CODE (arg
),
4636 TYPE_NAME (parm
), TYPE_CODE (parm
));
4638 /* x -> y means arg of type x being supplied for parameter of type y. */
4640 switch (TYPE_CODE (parm
))
4643 return rank_one_type_parm_ptr (parm
, arg
, value
);
4644 case TYPE_CODE_ARRAY
:
4645 return rank_one_type_parm_array (parm
, arg
, value
);
4646 case TYPE_CODE_FUNC
:
4647 return rank_one_type_parm_func (parm
, arg
, value
);
4649 return rank_one_type_parm_int (parm
, arg
, value
);
4650 case TYPE_CODE_ENUM
:
4651 return rank_one_type_parm_enum (parm
, arg
, value
);
4652 case TYPE_CODE_CHAR
:
4653 return rank_one_type_parm_char (parm
, arg
, value
);
4654 case TYPE_CODE_RANGE
:
4655 return rank_one_type_parm_range (parm
, arg
, value
);
4656 case TYPE_CODE_BOOL
:
4657 return rank_one_type_parm_bool (parm
, arg
, value
);
4659 return rank_one_type_parm_float (parm
, arg
, value
);
4660 case TYPE_CODE_COMPLEX
:
4661 return rank_one_type_parm_complex (parm
, arg
, value
);
4662 case TYPE_CODE_STRUCT
:
4663 return rank_one_type_parm_struct (parm
, arg
, value
);
4665 return rank_one_type_parm_set (parm
, arg
, value
);
4667 return INCOMPATIBLE_TYPE_BADNESS
;
4668 } /* switch (TYPE_CODE (arg)) */
4671 /* End of functions for overload resolution. */
4673 /* Routines to pretty-print types. */
4676 print_bit_vector (B_TYPE
*bits
, int nbits
)
4680 for (bitno
= 0; bitno
< nbits
; bitno
++)
4682 if ((bitno
% 8) == 0)
4684 puts_filtered (" ");
4686 if (B_TST (bits
, bitno
))
4687 printf_filtered (("1"));
4689 printf_filtered (("0"));
4693 /* Note the first arg should be the "this" pointer, we may not want to
4694 include it since we may get into a infinitely recursive
4698 print_args (struct field
*args
, int nargs
, int spaces
)
4704 for (i
= 0; i
< nargs
; i
++)
4706 printfi_filtered (spaces
, "[%d] name '%s'\n", i
,
4707 args
[i
].name
!= NULL
? args
[i
].name
: "<NULL>");
4708 recursive_dump_type (args
[i
].type
, spaces
+ 2);
4714 field_is_static (struct field
*f
)
4716 /* "static" fields are the fields whose location is not relative
4717 to the address of the enclosing struct. It would be nice to
4718 have a dedicated flag that would be set for static fields when
4719 the type is being created. But in practice, checking the field
4720 loc_kind should give us an accurate answer. */
4721 return (FIELD_LOC_KIND (*f
) == FIELD_LOC_KIND_PHYSNAME
4722 || FIELD_LOC_KIND (*f
) == FIELD_LOC_KIND_PHYSADDR
);
4726 dump_fn_fieldlists (struct type
*type
, int spaces
)
4732 printfi_filtered (spaces
, "fn_fieldlists ");
4733 gdb_print_host_address (TYPE_FN_FIELDLISTS (type
), gdb_stdout
);
4734 printf_filtered ("\n");
4735 for (method_idx
= 0; method_idx
< TYPE_NFN_FIELDS (type
); method_idx
++)
4737 f
= TYPE_FN_FIELDLIST1 (type
, method_idx
);
4738 printfi_filtered (spaces
+ 2, "[%d] name '%s' (",
4740 TYPE_FN_FIELDLIST_NAME (type
, method_idx
));
4741 gdb_print_host_address (TYPE_FN_FIELDLIST_NAME (type
, method_idx
),
4743 printf_filtered (_(") length %d\n"),
4744 TYPE_FN_FIELDLIST_LENGTH (type
, method_idx
));
4745 for (overload_idx
= 0;
4746 overload_idx
< TYPE_FN_FIELDLIST_LENGTH (type
, method_idx
);
4749 printfi_filtered (spaces
+ 4, "[%d] physname '%s' (",
4751 TYPE_FN_FIELD_PHYSNAME (f
, overload_idx
));
4752 gdb_print_host_address (TYPE_FN_FIELD_PHYSNAME (f
, overload_idx
),
4754 printf_filtered (")\n");
4755 printfi_filtered (spaces
+ 8, "type ");
4756 gdb_print_host_address (TYPE_FN_FIELD_TYPE (f
, overload_idx
),
4758 printf_filtered ("\n");
4760 recursive_dump_type (TYPE_FN_FIELD_TYPE (f
, overload_idx
),
4763 printfi_filtered (spaces
+ 8, "args ");
4764 gdb_print_host_address (TYPE_FN_FIELD_ARGS (f
, overload_idx
),
4766 printf_filtered ("\n");
4767 print_args (TYPE_FN_FIELD_ARGS (f
, overload_idx
),
4768 TYPE_NFIELDS (TYPE_FN_FIELD_TYPE (f
, overload_idx
)),
4770 printfi_filtered (spaces
+ 8, "fcontext ");
4771 gdb_print_host_address (TYPE_FN_FIELD_FCONTEXT (f
, overload_idx
),
4773 printf_filtered ("\n");
4775 printfi_filtered (spaces
+ 8, "is_const %d\n",
4776 TYPE_FN_FIELD_CONST (f
, overload_idx
));
4777 printfi_filtered (spaces
+ 8, "is_volatile %d\n",
4778 TYPE_FN_FIELD_VOLATILE (f
, overload_idx
));
4779 printfi_filtered (spaces
+ 8, "is_private %d\n",
4780 TYPE_FN_FIELD_PRIVATE (f
, overload_idx
));
4781 printfi_filtered (spaces
+ 8, "is_protected %d\n",
4782 TYPE_FN_FIELD_PROTECTED (f
, overload_idx
));
4783 printfi_filtered (spaces
+ 8, "is_stub %d\n",
4784 TYPE_FN_FIELD_STUB (f
, overload_idx
));
4785 printfi_filtered (spaces
+ 8, "defaulted %d\n",
4786 TYPE_FN_FIELD_DEFAULTED (f
, overload_idx
));
4787 printfi_filtered (spaces
+ 8, "is_deleted %d\n",
4788 TYPE_FN_FIELD_DELETED (f
, overload_idx
));
4789 printfi_filtered (spaces
+ 8, "voffset %u\n",
4790 TYPE_FN_FIELD_VOFFSET (f
, overload_idx
));
4796 print_cplus_stuff (struct type
*type
, int spaces
)
4798 printfi_filtered (spaces
, "vptr_fieldno %d\n", TYPE_VPTR_FIELDNO (type
));
4799 printfi_filtered (spaces
, "vptr_basetype ");
4800 gdb_print_host_address (TYPE_VPTR_BASETYPE (type
), gdb_stdout
);
4801 puts_filtered ("\n");
4802 if (TYPE_VPTR_BASETYPE (type
) != NULL
)
4803 recursive_dump_type (TYPE_VPTR_BASETYPE (type
), spaces
+ 2);
4805 printfi_filtered (spaces
, "n_baseclasses %d\n",
4806 TYPE_N_BASECLASSES (type
));
4807 printfi_filtered (spaces
, "nfn_fields %d\n",
4808 TYPE_NFN_FIELDS (type
));
4809 if (TYPE_N_BASECLASSES (type
) > 0)
4811 printfi_filtered (spaces
, "virtual_field_bits (%d bits at *",
4812 TYPE_N_BASECLASSES (type
));
4813 gdb_print_host_address (TYPE_FIELD_VIRTUAL_BITS (type
),
4815 printf_filtered (")");
4817 print_bit_vector (TYPE_FIELD_VIRTUAL_BITS (type
),
4818 TYPE_N_BASECLASSES (type
));
4819 puts_filtered ("\n");
4821 if (TYPE_NFIELDS (type
) > 0)
4823 if (TYPE_FIELD_PRIVATE_BITS (type
) != NULL
)
4825 printfi_filtered (spaces
,
4826 "private_field_bits (%d bits at *",
4827 TYPE_NFIELDS (type
));
4828 gdb_print_host_address (TYPE_FIELD_PRIVATE_BITS (type
),
4830 printf_filtered (")");
4831 print_bit_vector (TYPE_FIELD_PRIVATE_BITS (type
),
4832 TYPE_NFIELDS (type
));
4833 puts_filtered ("\n");
4835 if (TYPE_FIELD_PROTECTED_BITS (type
) != NULL
)
4837 printfi_filtered (spaces
,
4838 "protected_field_bits (%d bits at *",
4839 TYPE_NFIELDS (type
));
4840 gdb_print_host_address (TYPE_FIELD_PROTECTED_BITS (type
),
4842 printf_filtered (")");
4843 print_bit_vector (TYPE_FIELD_PROTECTED_BITS (type
),
4844 TYPE_NFIELDS (type
));
4845 puts_filtered ("\n");
4848 if (TYPE_NFN_FIELDS (type
) > 0)
4850 dump_fn_fieldlists (type
, spaces
);
4853 printfi_filtered (spaces
, "calling_convention %d\n",
4854 TYPE_CPLUS_CALLING_CONVENTION (type
));
4857 /* Print the contents of the TYPE's type_specific union, assuming that
4858 its type-specific kind is TYPE_SPECIFIC_GNAT_STUFF. */
4861 print_gnat_stuff (struct type
*type
, int spaces
)
4863 struct type
*descriptive_type
= TYPE_DESCRIPTIVE_TYPE (type
);
4865 if (descriptive_type
== NULL
)
4866 printfi_filtered (spaces
+ 2, "no descriptive type\n");
4869 printfi_filtered (spaces
+ 2, "descriptive type\n");
4870 recursive_dump_type (descriptive_type
, spaces
+ 4);
4874 static struct obstack dont_print_type_obstack
;
4877 recursive_dump_type (struct type
*type
, int spaces
)
4882 obstack_begin (&dont_print_type_obstack
, 0);
4884 if (TYPE_NFIELDS (type
) > 0
4885 || (HAVE_CPLUS_STRUCT (type
) && TYPE_NFN_FIELDS (type
) > 0))
4887 struct type
**first_dont_print
4888 = (struct type
**) obstack_base (&dont_print_type_obstack
);
4890 int i
= (struct type
**)
4891 obstack_next_free (&dont_print_type_obstack
) - first_dont_print
;
4895 if (type
== first_dont_print
[i
])
4897 printfi_filtered (spaces
, "type node ");
4898 gdb_print_host_address (type
, gdb_stdout
);
4899 printf_filtered (_(" <same as already seen type>\n"));
4904 obstack_ptr_grow (&dont_print_type_obstack
, type
);
4907 printfi_filtered (spaces
, "type node ");
4908 gdb_print_host_address (type
, gdb_stdout
);
4909 printf_filtered ("\n");
4910 printfi_filtered (spaces
, "name '%s' (",
4911 TYPE_NAME (type
) ? TYPE_NAME (type
) : "<NULL>");
4912 gdb_print_host_address (TYPE_NAME (type
), gdb_stdout
);
4913 printf_filtered (")\n");
4914 printfi_filtered (spaces
, "code 0x%x ", TYPE_CODE (type
));
4915 switch (TYPE_CODE (type
))
4917 case TYPE_CODE_UNDEF
:
4918 printf_filtered ("(TYPE_CODE_UNDEF)");
4921 printf_filtered ("(TYPE_CODE_PTR)");
4923 case TYPE_CODE_ARRAY
:
4924 printf_filtered ("(TYPE_CODE_ARRAY)");
4926 case TYPE_CODE_STRUCT
:
4927 printf_filtered ("(TYPE_CODE_STRUCT)");
4929 case TYPE_CODE_UNION
:
4930 printf_filtered ("(TYPE_CODE_UNION)");
4932 case TYPE_CODE_ENUM
:
4933 printf_filtered ("(TYPE_CODE_ENUM)");
4935 case TYPE_CODE_FLAGS
:
4936 printf_filtered ("(TYPE_CODE_FLAGS)");
4938 case TYPE_CODE_FUNC
:
4939 printf_filtered ("(TYPE_CODE_FUNC)");
4942 printf_filtered ("(TYPE_CODE_INT)");
4945 printf_filtered ("(TYPE_CODE_FLT)");
4947 case TYPE_CODE_VOID
:
4948 printf_filtered ("(TYPE_CODE_VOID)");
4951 printf_filtered ("(TYPE_CODE_SET)");
4953 case TYPE_CODE_RANGE
:
4954 printf_filtered ("(TYPE_CODE_RANGE)");
4956 case TYPE_CODE_STRING
:
4957 printf_filtered ("(TYPE_CODE_STRING)");
4959 case TYPE_CODE_ERROR
:
4960 printf_filtered ("(TYPE_CODE_ERROR)");
4962 case TYPE_CODE_MEMBERPTR
:
4963 printf_filtered ("(TYPE_CODE_MEMBERPTR)");
4965 case TYPE_CODE_METHODPTR
:
4966 printf_filtered ("(TYPE_CODE_METHODPTR)");
4968 case TYPE_CODE_METHOD
:
4969 printf_filtered ("(TYPE_CODE_METHOD)");
4972 printf_filtered ("(TYPE_CODE_REF)");
4974 case TYPE_CODE_CHAR
:
4975 printf_filtered ("(TYPE_CODE_CHAR)");
4977 case TYPE_CODE_BOOL
:
4978 printf_filtered ("(TYPE_CODE_BOOL)");
4980 case TYPE_CODE_COMPLEX
:
4981 printf_filtered ("(TYPE_CODE_COMPLEX)");
4983 case TYPE_CODE_TYPEDEF
:
4984 printf_filtered ("(TYPE_CODE_TYPEDEF)");
4986 case TYPE_CODE_NAMESPACE
:
4987 printf_filtered ("(TYPE_CODE_NAMESPACE)");
4990 printf_filtered ("(UNKNOWN TYPE CODE)");
4993 puts_filtered ("\n");
4994 printfi_filtered (spaces
, "length %s\n", pulongest (TYPE_LENGTH (type
)));
4995 if (TYPE_OBJFILE_OWNED (type
))
4997 printfi_filtered (spaces
, "objfile ");
4998 gdb_print_host_address (TYPE_OWNER (type
).objfile
, gdb_stdout
);
5002 printfi_filtered (spaces
, "gdbarch ");
5003 gdb_print_host_address (TYPE_OWNER (type
).gdbarch
, gdb_stdout
);
5005 printf_filtered ("\n");
5006 printfi_filtered (spaces
, "target_type ");
5007 gdb_print_host_address (TYPE_TARGET_TYPE (type
), gdb_stdout
);
5008 printf_filtered ("\n");
5009 if (TYPE_TARGET_TYPE (type
) != NULL
)
5011 recursive_dump_type (TYPE_TARGET_TYPE (type
), spaces
+ 2);
5013 printfi_filtered (spaces
, "pointer_type ");
5014 gdb_print_host_address (TYPE_POINTER_TYPE (type
), gdb_stdout
);
5015 printf_filtered ("\n");
5016 printfi_filtered (spaces
, "reference_type ");
5017 gdb_print_host_address (TYPE_REFERENCE_TYPE (type
), gdb_stdout
);
5018 printf_filtered ("\n");
5019 printfi_filtered (spaces
, "type_chain ");
5020 gdb_print_host_address (TYPE_CHAIN (type
), gdb_stdout
);
5021 printf_filtered ("\n");
5022 printfi_filtered (spaces
, "instance_flags 0x%x",
5023 TYPE_INSTANCE_FLAGS (type
));
5024 if (TYPE_CONST (type
))
5026 puts_filtered (" TYPE_CONST");
5028 if (TYPE_VOLATILE (type
))
5030 puts_filtered (" TYPE_VOLATILE");
5032 if (TYPE_CODE_SPACE (type
))
5034 puts_filtered (" TYPE_CODE_SPACE");
5036 if (TYPE_DATA_SPACE (type
))
5038 puts_filtered (" TYPE_DATA_SPACE");
5040 if (TYPE_ADDRESS_CLASS_1 (type
))
5042 puts_filtered (" TYPE_ADDRESS_CLASS_1");
5044 if (TYPE_ADDRESS_CLASS_2 (type
))
5046 puts_filtered (" TYPE_ADDRESS_CLASS_2");
5048 if (TYPE_RESTRICT (type
))
5050 puts_filtered (" TYPE_RESTRICT");
5052 if (TYPE_ATOMIC (type
))
5054 puts_filtered (" TYPE_ATOMIC");
5056 puts_filtered ("\n");
5058 printfi_filtered (spaces
, "flags");
5059 if (TYPE_UNSIGNED (type
))
5061 puts_filtered (" TYPE_UNSIGNED");
5063 if (TYPE_NOSIGN (type
))
5065 puts_filtered (" TYPE_NOSIGN");
5067 if (TYPE_ENDIANITY_NOT_DEFAULT (type
))
5069 puts_filtered (" TYPE_ENDIANITY_NOT_DEFAULT");
5071 if (TYPE_STUB (type
))
5073 puts_filtered (" TYPE_STUB");
5075 if (TYPE_TARGET_STUB (type
))
5077 puts_filtered (" TYPE_TARGET_STUB");
5079 if (TYPE_PROTOTYPED (type
))
5081 puts_filtered (" TYPE_PROTOTYPED");
5083 if (TYPE_VARARGS (type
))
5085 puts_filtered (" TYPE_VARARGS");
5087 /* This is used for things like AltiVec registers on ppc. Gcc emits
5088 an attribute for the array type, which tells whether or not we
5089 have a vector, instead of a regular array. */
5090 if (TYPE_VECTOR (type
))
5092 puts_filtered (" TYPE_VECTOR");
5094 if (TYPE_FIXED_INSTANCE (type
))
5096 puts_filtered (" TYPE_FIXED_INSTANCE");
5098 if (TYPE_STUB_SUPPORTED (type
))
5100 puts_filtered (" TYPE_STUB_SUPPORTED");
5102 if (TYPE_NOTTEXT (type
))
5104 puts_filtered (" TYPE_NOTTEXT");
5106 puts_filtered ("\n");
5107 printfi_filtered (spaces
, "nfields %d ", TYPE_NFIELDS (type
));
5108 gdb_print_host_address (TYPE_FIELDS (type
), gdb_stdout
);
5109 puts_filtered ("\n");
5110 for (idx
= 0; idx
< TYPE_NFIELDS (type
); idx
++)
5112 if (TYPE_CODE (type
) == TYPE_CODE_ENUM
)
5113 printfi_filtered (spaces
+ 2,
5114 "[%d] enumval %s type ",
5115 idx
, plongest (TYPE_FIELD_ENUMVAL (type
, idx
)));
5117 printfi_filtered (spaces
+ 2,
5118 "[%d] bitpos %s bitsize %d type ",
5119 idx
, plongest (TYPE_FIELD_BITPOS (type
, idx
)),
5120 TYPE_FIELD_BITSIZE (type
, idx
));
5121 gdb_print_host_address (TYPE_FIELD_TYPE (type
, idx
), gdb_stdout
);
5122 printf_filtered (" name '%s' (",
5123 TYPE_FIELD_NAME (type
, idx
) != NULL
5124 ? TYPE_FIELD_NAME (type
, idx
)
5126 gdb_print_host_address (TYPE_FIELD_NAME (type
, idx
), gdb_stdout
);
5127 printf_filtered (")\n");
5128 if (TYPE_FIELD_TYPE (type
, idx
) != NULL
)
5130 recursive_dump_type (TYPE_FIELD_TYPE (type
, idx
), spaces
+ 4);
5133 if (TYPE_CODE (type
) == TYPE_CODE_RANGE
)
5135 printfi_filtered (spaces
, "low %s%s high %s%s\n",
5136 plongest (TYPE_LOW_BOUND (type
)),
5137 TYPE_LOW_BOUND_UNDEFINED (type
) ? " (undefined)" : "",
5138 plongest (TYPE_HIGH_BOUND (type
)),
5139 TYPE_HIGH_BOUND_UNDEFINED (type
)
5140 ? " (undefined)" : "");
5143 switch (TYPE_SPECIFIC_FIELD (type
))
5145 case TYPE_SPECIFIC_CPLUS_STUFF
:
5146 printfi_filtered (spaces
, "cplus_stuff ");
5147 gdb_print_host_address (TYPE_CPLUS_SPECIFIC (type
),
5149 puts_filtered ("\n");
5150 print_cplus_stuff (type
, spaces
);
5153 case TYPE_SPECIFIC_GNAT_STUFF
:
5154 printfi_filtered (spaces
, "gnat_stuff ");
5155 gdb_print_host_address (TYPE_GNAT_SPECIFIC (type
), gdb_stdout
);
5156 puts_filtered ("\n");
5157 print_gnat_stuff (type
, spaces
);
5160 case TYPE_SPECIFIC_FLOATFORMAT
:
5161 printfi_filtered (spaces
, "floatformat ");
5162 if (TYPE_FLOATFORMAT (type
) == NULL
5163 || TYPE_FLOATFORMAT (type
)->name
== NULL
)
5164 puts_filtered ("(null)");
5166 puts_filtered (TYPE_FLOATFORMAT (type
)->name
);
5167 puts_filtered ("\n");
5170 case TYPE_SPECIFIC_FUNC
:
5171 printfi_filtered (spaces
, "calling_convention %d\n",
5172 TYPE_CALLING_CONVENTION (type
));
5173 /* tail_call_list is not printed. */
5176 case TYPE_SPECIFIC_SELF_TYPE
:
5177 printfi_filtered (spaces
, "self_type ");
5178 gdb_print_host_address (TYPE_SELF_TYPE (type
), gdb_stdout
);
5179 puts_filtered ("\n");
5184 obstack_free (&dont_print_type_obstack
, NULL
);
5187 /* Trivial helpers for the libiberty hash table, for mapping one
5190 struct type_pair
: public allocate_on_obstack
5192 type_pair (struct type
*old_
, struct type
*newobj_
)
5193 : old (old_
), newobj (newobj_
)
5196 struct type
* const old
, * const newobj
;
5200 type_pair_hash (const void *item
)
5202 const struct type_pair
*pair
= (const struct type_pair
*) item
;
5204 return htab_hash_pointer (pair
->old
);
5208 type_pair_eq (const void *item_lhs
, const void *item_rhs
)
5210 const struct type_pair
*lhs
= (const struct type_pair
*) item_lhs
;
5211 const struct type_pair
*rhs
= (const struct type_pair
*) item_rhs
;
5213 return lhs
->old
== rhs
->old
;
5216 /* Allocate the hash table used by copy_type_recursive to walk
5217 types without duplicates. We use OBJFILE's obstack, because
5218 OBJFILE is about to be deleted. */
5221 create_copied_types_hash (struct objfile
*objfile
)
5223 return htab_create_alloc_ex (1, type_pair_hash
, type_pair_eq
,
5224 NULL
, &objfile
->objfile_obstack
,
5225 hashtab_obstack_allocate
,
5226 dummy_obstack_deallocate
);
5229 /* Recursively copy (deep copy) a dynamic attribute list of a type. */
5231 static struct dynamic_prop_list
*
5232 copy_dynamic_prop_list (struct obstack
*objfile_obstack
,
5233 struct dynamic_prop_list
*list
)
5235 struct dynamic_prop_list
*copy
= list
;
5236 struct dynamic_prop_list
**node_ptr
= ©
;
5238 while (*node_ptr
!= NULL
)
5240 struct dynamic_prop_list
*node_copy
;
5242 node_copy
= ((struct dynamic_prop_list
*)
5243 obstack_copy (objfile_obstack
, *node_ptr
,
5244 sizeof (struct dynamic_prop_list
)));
5245 node_copy
->prop
= (*node_ptr
)->prop
;
5246 *node_ptr
= node_copy
;
5248 node_ptr
= &node_copy
->next
;
5254 /* Recursively copy (deep copy) TYPE, if it is associated with
5255 OBJFILE. Return a new type owned by the gdbarch associated with the type, a
5256 saved type if we have already visited TYPE (using COPIED_TYPES), or TYPE if
5257 it is not associated with OBJFILE. */
5260 copy_type_recursive (struct objfile
*objfile
,
5262 htab_t copied_types
)
5265 struct type
*new_type
;
5267 if (! TYPE_OBJFILE_OWNED (type
))
5270 /* This type shouldn't be pointing to any types in other objfiles;
5271 if it did, the type might disappear unexpectedly. */
5272 gdb_assert (TYPE_OBJFILE (type
) == objfile
);
5274 struct type_pair
pair (type
, nullptr);
5276 slot
= htab_find_slot (copied_types
, &pair
, INSERT
);
5278 return ((struct type_pair
*) *slot
)->newobj
;
5280 new_type
= alloc_type_arch (get_type_arch (type
));
5282 /* We must add the new type to the hash table immediately, in case
5283 we encounter this type again during a recursive call below. */
5284 struct type_pair
*stored
5285 = new (&objfile
->objfile_obstack
) struct type_pair (type
, new_type
);
5289 /* Copy the common fields of types. For the main type, we simply
5290 copy the entire thing and then update specific fields as needed. */
5291 *TYPE_MAIN_TYPE (new_type
) = *TYPE_MAIN_TYPE (type
);
5292 TYPE_OBJFILE_OWNED (new_type
) = 0;
5293 TYPE_OWNER (new_type
).gdbarch
= get_type_arch (type
);
5295 if (TYPE_NAME (type
))
5296 TYPE_NAME (new_type
) = xstrdup (TYPE_NAME (type
));
5298 TYPE_INSTANCE_FLAGS (new_type
) = TYPE_INSTANCE_FLAGS (type
);
5299 TYPE_LENGTH (new_type
) = TYPE_LENGTH (type
);
5301 /* Copy the fields. */
5302 if (TYPE_NFIELDS (type
))
5306 nfields
= TYPE_NFIELDS (type
);
5307 TYPE_FIELDS (new_type
) = (struct field
*)
5308 TYPE_ZALLOC (new_type
, nfields
* sizeof (struct field
));
5309 for (i
= 0; i
< nfields
; i
++)
5311 TYPE_FIELD_ARTIFICIAL (new_type
, i
) =
5312 TYPE_FIELD_ARTIFICIAL (type
, i
);
5313 TYPE_FIELD_BITSIZE (new_type
, i
) = TYPE_FIELD_BITSIZE (type
, i
);
5314 if (TYPE_FIELD_TYPE (type
, i
))
5315 TYPE_FIELD_TYPE (new_type
, i
)
5316 = copy_type_recursive (objfile
, TYPE_FIELD_TYPE (type
, i
),
5318 if (TYPE_FIELD_NAME (type
, i
))
5319 TYPE_FIELD_NAME (new_type
, i
) =
5320 xstrdup (TYPE_FIELD_NAME (type
, i
));
5321 switch (TYPE_FIELD_LOC_KIND (type
, i
))
5323 case FIELD_LOC_KIND_BITPOS
:
5324 SET_FIELD_BITPOS (TYPE_FIELD (new_type
, i
),
5325 TYPE_FIELD_BITPOS (type
, i
));
5327 case FIELD_LOC_KIND_ENUMVAL
:
5328 SET_FIELD_ENUMVAL (TYPE_FIELD (new_type
, i
),
5329 TYPE_FIELD_ENUMVAL (type
, i
));
5331 case FIELD_LOC_KIND_PHYSADDR
:
5332 SET_FIELD_PHYSADDR (TYPE_FIELD (new_type
, i
),
5333 TYPE_FIELD_STATIC_PHYSADDR (type
, i
));
5335 case FIELD_LOC_KIND_PHYSNAME
:
5336 SET_FIELD_PHYSNAME (TYPE_FIELD (new_type
, i
),
5337 xstrdup (TYPE_FIELD_STATIC_PHYSNAME (type
,
5341 internal_error (__FILE__
, __LINE__
,
5342 _("Unexpected type field location kind: %d"),
5343 TYPE_FIELD_LOC_KIND (type
, i
));
5348 /* For range types, copy the bounds information. */
5349 if (TYPE_CODE (type
) == TYPE_CODE_RANGE
)
5351 TYPE_RANGE_DATA (new_type
) = (struct range_bounds
*)
5352 TYPE_ALLOC (new_type
, sizeof (struct range_bounds
));
5353 *TYPE_RANGE_DATA (new_type
) = *TYPE_RANGE_DATA (type
);
5356 if (TYPE_DYN_PROP_LIST (type
) != NULL
)
5357 TYPE_DYN_PROP_LIST (new_type
)
5358 = copy_dynamic_prop_list (&objfile
->objfile_obstack
,
5359 TYPE_DYN_PROP_LIST (type
));
5362 /* Copy pointers to other types. */
5363 if (TYPE_TARGET_TYPE (type
))
5364 TYPE_TARGET_TYPE (new_type
) =
5365 copy_type_recursive (objfile
,
5366 TYPE_TARGET_TYPE (type
),
5369 /* Maybe copy the type_specific bits.
5371 NOTE drow/2005-12-09: We do not copy the C++-specific bits like
5372 base classes and methods. There's no fundamental reason why we
5373 can't, but at the moment it is not needed. */
5375 switch (TYPE_SPECIFIC_FIELD (type
))
5377 case TYPE_SPECIFIC_NONE
:
5379 case TYPE_SPECIFIC_FUNC
:
5380 INIT_FUNC_SPECIFIC (new_type
);
5381 TYPE_CALLING_CONVENTION (new_type
) = TYPE_CALLING_CONVENTION (type
);
5382 TYPE_NO_RETURN (new_type
) = TYPE_NO_RETURN (type
);
5383 TYPE_TAIL_CALL_LIST (new_type
) = NULL
;
5385 case TYPE_SPECIFIC_FLOATFORMAT
:
5386 TYPE_FLOATFORMAT (new_type
) = TYPE_FLOATFORMAT (type
);
5388 case TYPE_SPECIFIC_CPLUS_STUFF
:
5389 INIT_CPLUS_SPECIFIC (new_type
);
5391 case TYPE_SPECIFIC_GNAT_STUFF
:
5392 INIT_GNAT_SPECIFIC (new_type
);
5394 case TYPE_SPECIFIC_SELF_TYPE
:
5395 set_type_self_type (new_type
,
5396 copy_type_recursive (objfile
, TYPE_SELF_TYPE (type
),
5400 gdb_assert_not_reached ("bad type_specific_kind");
5406 /* Make a copy of the given TYPE, except that the pointer & reference
5407 types are not preserved.
5409 This function assumes that the given type has an associated objfile.
5410 This objfile is used to allocate the new type. */
5413 copy_type (const struct type
*type
)
5415 struct type
*new_type
;
5417 gdb_assert (TYPE_OBJFILE_OWNED (type
));
5419 new_type
= alloc_type_copy (type
);
5420 TYPE_INSTANCE_FLAGS (new_type
) = TYPE_INSTANCE_FLAGS (type
);
5421 TYPE_LENGTH (new_type
) = TYPE_LENGTH (type
);
5422 memcpy (TYPE_MAIN_TYPE (new_type
), TYPE_MAIN_TYPE (type
),
5423 sizeof (struct main_type
));
5424 if (TYPE_DYN_PROP_LIST (type
) != NULL
)
5425 TYPE_DYN_PROP_LIST (new_type
)
5426 = copy_dynamic_prop_list (&TYPE_OBJFILE (type
) -> objfile_obstack
,
5427 TYPE_DYN_PROP_LIST (type
));
5432 /* Helper functions to initialize architecture-specific types. */
5434 /* Allocate a type structure associated with GDBARCH and set its
5435 CODE, LENGTH, and NAME fields. */
5438 arch_type (struct gdbarch
*gdbarch
,
5439 enum type_code code
, int bit
, const char *name
)
5443 type
= alloc_type_arch (gdbarch
);
5444 set_type_code (type
, code
);
5445 gdb_assert ((bit
% TARGET_CHAR_BIT
) == 0);
5446 TYPE_LENGTH (type
) = bit
/ TARGET_CHAR_BIT
;
5449 TYPE_NAME (type
) = gdbarch_obstack_strdup (gdbarch
, name
);
5454 /* Allocate a TYPE_CODE_INT type structure associated with GDBARCH.
5455 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
5456 the type's TYPE_UNSIGNED flag. NAME is the type name. */
5459 arch_integer_type (struct gdbarch
*gdbarch
,
5460 int bit
, int unsigned_p
, const char *name
)
5464 t
= arch_type (gdbarch
, TYPE_CODE_INT
, bit
, name
);
5466 TYPE_UNSIGNED (t
) = 1;
5471 /* Allocate a TYPE_CODE_CHAR type structure associated with GDBARCH.
5472 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
5473 the type's TYPE_UNSIGNED flag. NAME is the type name. */
5476 arch_character_type (struct gdbarch
*gdbarch
,
5477 int bit
, int unsigned_p
, const char *name
)
5481 t
= arch_type (gdbarch
, TYPE_CODE_CHAR
, bit
, name
);
5483 TYPE_UNSIGNED (t
) = 1;
5488 /* Allocate a TYPE_CODE_BOOL type structure associated with GDBARCH.
5489 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
5490 the type's TYPE_UNSIGNED flag. NAME is the type name. */
5493 arch_boolean_type (struct gdbarch
*gdbarch
,
5494 int bit
, int unsigned_p
, const char *name
)
5498 t
= arch_type (gdbarch
, TYPE_CODE_BOOL
, bit
, name
);
5500 TYPE_UNSIGNED (t
) = 1;
5505 /* Allocate a TYPE_CODE_FLT type structure associated with GDBARCH.
5506 BIT is the type size in bits; if BIT equals -1, the size is
5507 determined by the floatformat. NAME is the type name. Set the
5508 TYPE_FLOATFORMAT from FLOATFORMATS. */
5511 arch_float_type (struct gdbarch
*gdbarch
,
5512 int bit
, const char *name
,
5513 const struct floatformat
**floatformats
)
5515 const struct floatformat
*fmt
= floatformats
[gdbarch_byte_order (gdbarch
)];
5518 bit
= verify_floatformat (bit
, fmt
);
5519 t
= arch_type (gdbarch
, TYPE_CODE_FLT
, bit
, name
);
5520 TYPE_FLOATFORMAT (t
) = fmt
;
5525 /* Allocate a TYPE_CODE_DECFLOAT type structure associated with GDBARCH.
5526 BIT is the type size in bits. NAME is the type name. */
5529 arch_decfloat_type (struct gdbarch
*gdbarch
, int bit
, const char *name
)
5533 t
= arch_type (gdbarch
, TYPE_CODE_DECFLOAT
, bit
, name
);
5537 /* Allocate a TYPE_CODE_PTR type structure associated with GDBARCH.
5538 BIT is the pointer type size in bits. NAME is the type name.
5539 TARGET_TYPE is the pointer target type. Always sets the pointer type's
5540 TYPE_UNSIGNED flag. */
5543 arch_pointer_type (struct gdbarch
*gdbarch
,
5544 int bit
, const char *name
, struct type
*target_type
)
5548 t
= arch_type (gdbarch
, TYPE_CODE_PTR
, bit
, name
);
5549 TYPE_TARGET_TYPE (t
) = target_type
;
5550 TYPE_UNSIGNED (t
) = 1;
5554 /* Allocate a TYPE_CODE_FLAGS type structure associated with GDBARCH.
5555 NAME is the type name. BIT is the size of the flag word in bits. */
5558 arch_flags_type (struct gdbarch
*gdbarch
, const char *name
, int bit
)
5562 type
= arch_type (gdbarch
, TYPE_CODE_FLAGS
, bit
, name
);
5563 TYPE_UNSIGNED (type
) = 1;
5564 TYPE_NFIELDS (type
) = 0;
5565 /* Pre-allocate enough space assuming every field is one bit. */
5567 = (struct field
*) TYPE_ZALLOC (type
, bit
* sizeof (struct field
));
5572 /* Add field to TYPE_CODE_FLAGS type TYPE to indicate the bit at
5573 position BITPOS is called NAME. Pass NAME as "" for fields that
5574 should not be printed. */
5577 append_flags_type_field (struct type
*type
, int start_bitpos
, int nr_bits
,
5578 struct type
*field_type
, const char *name
)
5580 int type_bitsize
= TYPE_LENGTH (type
) * TARGET_CHAR_BIT
;
5581 int field_nr
= TYPE_NFIELDS (type
);
5583 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_FLAGS
);
5584 gdb_assert (TYPE_NFIELDS (type
) + 1 <= type_bitsize
);
5585 gdb_assert (start_bitpos
>= 0 && start_bitpos
< type_bitsize
);
5586 gdb_assert (nr_bits
>= 1 && nr_bits
<= type_bitsize
);
5587 gdb_assert (name
!= NULL
);
5589 TYPE_FIELD_NAME (type
, field_nr
) = xstrdup (name
);
5590 TYPE_FIELD_TYPE (type
, field_nr
) = field_type
;
5591 SET_FIELD_BITPOS (TYPE_FIELD (type
, field_nr
), start_bitpos
);
5592 TYPE_FIELD_BITSIZE (type
, field_nr
) = nr_bits
;
5593 ++TYPE_NFIELDS (type
);
5596 /* Special version of append_flags_type_field to add a flag field.
5597 Add field to TYPE_CODE_FLAGS type TYPE to indicate the bit at
5598 position BITPOS is called NAME. */
5601 append_flags_type_flag (struct type
*type
, int bitpos
, const char *name
)
5603 struct gdbarch
*gdbarch
= get_type_arch (type
);
5605 append_flags_type_field (type
, bitpos
, 1,
5606 builtin_type (gdbarch
)->builtin_bool
,
5610 /* Allocate a TYPE_CODE_STRUCT or TYPE_CODE_UNION type structure (as
5611 specified by CODE) associated with GDBARCH. NAME is the type name. */
5614 arch_composite_type (struct gdbarch
*gdbarch
, const char *name
,
5615 enum type_code code
)
5619 gdb_assert (code
== TYPE_CODE_STRUCT
|| code
== TYPE_CODE_UNION
);
5620 t
= arch_type (gdbarch
, code
, 0, NULL
);
5621 TYPE_NAME (t
) = name
;
5622 INIT_CPLUS_SPECIFIC (t
);
5626 /* Add new field with name NAME and type FIELD to composite type T.
5627 Do not set the field's position or adjust the type's length;
5628 the caller should do so. Return the new field. */
5631 append_composite_type_field_raw (struct type
*t
, const char *name
,
5636 TYPE_NFIELDS (t
) = TYPE_NFIELDS (t
) + 1;
5637 TYPE_FIELDS (t
) = XRESIZEVEC (struct field
, TYPE_FIELDS (t
),
5639 f
= &(TYPE_FIELDS (t
)[TYPE_NFIELDS (t
) - 1]);
5640 memset (f
, 0, sizeof f
[0]);
5641 FIELD_TYPE (f
[0]) = field
;
5642 FIELD_NAME (f
[0]) = name
;
5646 /* Add new field with name NAME and type FIELD to composite type T.
5647 ALIGNMENT (if non-zero) specifies the minimum field alignment. */
5650 append_composite_type_field_aligned (struct type
*t
, const char *name
,
5651 struct type
*field
, int alignment
)
5653 struct field
*f
= append_composite_type_field_raw (t
, name
, field
);
5655 if (TYPE_CODE (t
) == TYPE_CODE_UNION
)
5657 if (TYPE_LENGTH (t
) < TYPE_LENGTH (field
))
5658 TYPE_LENGTH (t
) = TYPE_LENGTH (field
);
5660 else if (TYPE_CODE (t
) == TYPE_CODE_STRUCT
)
5662 TYPE_LENGTH (t
) = TYPE_LENGTH (t
) + TYPE_LENGTH (field
);
5663 if (TYPE_NFIELDS (t
) > 1)
5665 SET_FIELD_BITPOS (f
[0],
5666 (FIELD_BITPOS (f
[-1])
5667 + (TYPE_LENGTH (FIELD_TYPE (f
[-1]))
5668 * TARGET_CHAR_BIT
)));
5674 alignment
*= TARGET_CHAR_BIT
;
5675 left
= FIELD_BITPOS (f
[0]) % alignment
;
5679 SET_FIELD_BITPOS (f
[0], FIELD_BITPOS (f
[0]) + (alignment
- left
));
5680 TYPE_LENGTH (t
) += (alignment
- left
) / TARGET_CHAR_BIT
;
5687 /* Add new field with name NAME and type FIELD to composite type T. */
5690 append_composite_type_field (struct type
*t
, const char *name
,
5693 append_composite_type_field_aligned (t
, name
, field
, 0);
5696 static struct gdbarch_data
*gdbtypes_data
;
5698 const struct builtin_type
*
5699 builtin_type (struct gdbarch
*gdbarch
)
5701 return (const struct builtin_type
*) gdbarch_data (gdbarch
, gdbtypes_data
);
5705 gdbtypes_post_init (struct gdbarch
*gdbarch
)
5707 struct builtin_type
*builtin_type
5708 = GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct builtin_type
);
5711 builtin_type
->builtin_void
5712 = arch_type (gdbarch
, TYPE_CODE_VOID
, TARGET_CHAR_BIT
, "void");
5713 builtin_type
->builtin_char
5714 = arch_integer_type (gdbarch
, TARGET_CHAR_BIT
,
5715 !gdbarch_char_signed (gdbarch
), "char");
5716 TYPE_NOSIGN (builtin_type
->builtin_char
) = 1;
5717 builtin_type
->builtin_signed_char
5718 = arch_integer_type (gdbarch
, TARGET_CHAR_BIT
,
5720 builtin_type
->builtin_unsigned_char
5721 = arch_integer_type (gdbarch
, TARGET_CHAR_BIT
,
5722 1, "unsigned char");
5723 builtin_type
->builtin_short
5724 = arch_integer_type (gdbarch
, gdbarch_short_bit (gdbarch
),
5726 builtin_type
->builtin_unsigned_short
5727 = arch_integer_type (gdbarch
, gdbarch_short_bit (gdbarch
),
5728 1, "unsigned short");
5729 builtin_type
->builtin_int
5730 = arch_integer_type (gdbarch
, gdbarch_int_bit (gdbarch
),
5732 builtin_type
->builtin_unsigned_int
5733 = arch_integer_type (gdbarch
, gdbarch_int_bit (gdbarch
),
5735 builtin_type
->builtin_long
5736 = arch_integer_type (gdbarch
, gdbarch_long_bit (gdbarch
),
5738 builtin_type
->builtin_unsigned_long
5739 = arch_integer_type (gdbarch
, gdbarch_long_bit (gdbarch
),
5740 1, "unsigned long");
5741 builtin_type
->builtin_long_long
5742 = arch_integer_type (gdbarch
, gdbarch_long_long_bit (gdbarch
),
5744 builtin_type
->builtin_unsigned_long_long
5745 = arch_integer_type (gdbarch
, gdbarch_long_long_bit (gdbarch
),
5746 1, "unsigned long long");
5747 builtin_type
->builtin_half
5748 = arch_float_type (gdbarch
, gdbarch_half_bit (gdbarch
),
5749 "half", gdbarch_half_format (gdbarch
));
5750 builtin_type
->builtin_float
5751 = arch_float_type (gdbarch
, gdbarch_float_bit (gdbarch
),
5752 "float", gdbarch_float_format (gdbarch
));
5753 builtin_type
->builtin_double
5754 = arch_float_type (gdbarch
, gdbarch_double_bit (gdbarch
),
5755 "double", gdbarch_double_format (gdbarch
));
5756 builtin_type
->builtin_long_double
5757 = arch_float_type (gdbarch
, gdbarch_long_double_bit (gdbarch
),
5758 "long double", gdbarch_long_double_format (gdbarch
));
5759 builtin_type
->builtin_complex
5760 = init_complex_type ("complex", builtin_type
->builtin_float
);
5761 builtin_type
->builtin_double_complex
5762 = init_complex_type ("double complex", builtin_type
->builtin_double
);
5763 builtin_type
->builtin_string
5764 = arch_type (gdbarch
, TYPE_CODE_STRING
, TARGET_CHAR_BIT
, "string");
5765 builtin_type
->builtin_bool
5766 = arch_type (gdbarch
, TYPE_CODE_BOOL
, TARGET_CHAR_BIT
, "bool");
5768 /* The following three are about decimal floating point types, which
5769 are 32-bits, 64-bits and 128-bits respectively. */
5770 builtin_type
->builtin_decfloat
5771 = arch_decfloat_type (gdbarch
, 32, "_Decimal32");
5772 builtin_type
->builtin_decdouble
5773 = arch_decfloat_type (gdbarch
, 64, "_Decimal64");
5774 builtin_type
->builtin_declong
5775 = arch_decfloat_type (gdbarch
, 128, "_Decimal128");
5777 /* "True" character types. */
5778 builtin_type
->builtin_true_char
5779 = arch_character_type (gdbarch
, TARGET_CHAR_BIT
, 0, "true character");
5780 builtin_type
->builtin_true_unsigned_char
5781 = arch_character_type (gdbarch
, TARGET_CHAR_BIT
, 1, "true character");
5783 /* Fixed-size integer types. */
5784 builtin_type
->builtin_int0
5785 = arch_integer_type (gdbarch
, 0, 0, "int0_t");
5786 builtin_type
->builtin_int8
5787 = arch_integer_type (gdbarch
, 8, 0, "int8_t");
5788 builtin_type
->builtin_uint8
5789 = arch_integer_type (gdbarch
, 8, 1, "uint8_t");
5790 builtin_type
->builtin_int16
5791 = arch_integer_type (gdbarch
, 16, 0, "int16_t");
5792 builtin_type
->builtin_uint16
5793 = arch_integer_type (gdbarch
, 16, 1, "uint16_t");
5794 builtin_type
->builtin_int24
5795 = arch_integer_type (gdbarch
, 24, 0, "int24_t");
5796 builtin_type
->builtin_uint24
5797 = arch_integer_type (gdbarch
, 24, 1, "uint24_t");
5798 builtin_type
->builtin_int32
5799 = arch_integer_type (gdbarch
, 32, 0, "int32_t");
5800 builtin_type
->builtin_uint32
5801 = arch_integer_type (gdbarch
, 32, 1, "uint32_t");
5802 builtin_type
->builtin_int64
5803 = arch_integer_type (gdbarch
, 64, 0, "int64_t");
5804 builtin_type
->builtin_uint64
5805 = arch_integer_type (gdbarch
, 64, 1, "uint64_t");
5806 builtin_type
->builtin_int128
5807 = arch_integer_type (gdbarch
, 128, 0, "int128_t");
5808 builtin_type
->builtin_uint128
5809 = arch_integer_type (gdbarch
, 128, 1, "uint128_t");
5810 TYPE_INSTANCE_FLAGS (builtin_type
->builtin_int8
) |=
5811 TYPE_INSTANCE_FLAG_NOTTEXT
;
5812 TYPE_INSTANCE_FLAGS (builtin_type
->builtin_uint8
) |=
5813 TYPE_INSTANCE_FLAG_NOTTEXT
;
5815 /* Wide character types. */
5816 builtin_type
->builtin_char16
5817 = arch_integer_type (gdbarch
, 16, 1, "char16_t");
5818 builtin_type
->builtin_char32
5819 = arch_integer_type (gdbarch
, 32, 1, "char32_t");
5820 builtin_type
->builtin_wchar
5821 = arch_integer_type (gdbarch
, gdbarch_wchar_bit (gdbarch
),
5822 !gdbarch_wchar_signed (gdbarch
), "wchar_t");
5824 /* Default data/code pointer types. */
5825 builtin_type
->builtin_data_ptr
5826 = lookup_pointer_type (builtin_type
->builtin_void
);
5827 builtin_type
->builtin_func_ptr
5828 = lookup_pointer_type (lookup_function_type (builtin_type
->builtin_void
));
5829 builtin_type
->builtin_func_func
5830 = lookup_function_type (builtin_type
->builtin_func_ptr
);
5832 /* This type represents a GDB internal function. */
5833 builtin_type
->internal_fn
5834 = arch_type (gdbarch
, TYPE_CODE_INTERNAL_FUNCTION
, 0,
5835 "<internal function>");
5837 /* This type represents an xmethod. */
5838 builtin_type
->xmethod
5839 = arch_type (gdbarch
, TYPE_CODE_XMETHOD
, 0, "<xmethod>");
5841 return builtin_type
;
5844 /* This set of objfile-based types is intended to be used by symbol
5845 readers as basic types. */
5847 static const struct objfile_key
<struct objfile_type
,
5848 gdb::noop_deleter
<struct objfile_type
>>
5851 const struct objfile_type
*
5852 objfile_type (struct objfile
*objfile
)
5854 struct gdbarch
*gdbarch
;
5855 struct objfile_type
*objfile_type
= objfile_type_data
.get (objfile
);
5858 return objfile_type
;
5860 objfile_type
= OBSTACK_CALLOC (&objfile
->objfile_obstack
,
5861 1, struct objfile_type
);
5863 /* Use the objfile architecture to determine basic type properties. */
5864 gdbarch
= objfile
->arch ();
5867 objfile_type
->builtin_void
5868 = init_type (objfile
, TYPE_CODE_VOID
, TARGET_CHAR_BIT
, "void");
5869 objfile_type
->builtin_char
5870 = init_integer_type (objfile
, TARGET_CHAR_BIT
,
5871 !gdbarch_char_signed (gdbarch
), "char");
5872 TYPE_NOSIGN (objfile_type
->builtin_char
) = 1;
5873 objfile_type
->builtin_signed_char
5874 = init_integer_type (objfile
, TARGET_CHAR_BIT
,
5876 objfile_type
->builtin_unsigned_char
5877 = init_integer_type (objfile
, TARGET_CHAR_BIT
,
5878 1, "unsigned char");
5879 objfile_type
->builtin_short
5880 = init_integer_type (objfile
, gdbarch_short_bit (gdbarch
),
5882 objfile_type
->builtin_unsigned_short
5883 = init_integer_type (objfile
, gdbarch_short_bit (gdbarch
),
5884 1, "unsigned short");
5885 objfile_type
->builtin_int
5886 = init_integer_type (objfile
, gdbarch_int_bit (gdbarch
),
5888 objfile_type
->builtin_unsigned_int
5889 = init_integer_type (objfile
, gdbarch_int_bit (gdbarch
),
5891 objfile_type
->builtin_long
5892 = init_integer_type (objfile
, gdbarch_long_bit (gdbarch
),
5894 objfile_type
->builtin_unsigned_long
5895 = init_integer_type (objfile
, gdbarch_long_bit (gdbarch
),
5896 1, "unsigned long");
5897 objfile_type
->builtin_long_long
5898 = init_integer_type (objfile
, gdbarch_long_long_bit (gdbarch
),
5900 objfile_type
->builtin_unsigned_long_long
5901 = init_integer_type (objfile
, gdbarch_long_long_bit (gdbarch
),
5902 1, "unsigned long long");
5903 objfile_type
->builtin_float
5904 = init_float_type (objfile
, gdbarch_float_bit (gdbarch
),
5905 "float", gdbarch_float_format (gdbarch
));
5906 objfile_type
->builtin_double
5907 = init_float_type (objfile
, gdbarch_double_bit (gdbarch
),
5908 "double", gdbarch_double_format (gdbarch
));
5909 objfile_type
->builtin_long_double
5910 = init_float_type (objfile
, gdbarch_long_double_bit (gdbarch
),
5911 "long double", gdbarch_long_double_format (gdbarch
));
5913 /* This type represents a type that was unrecognized in symbol read-in. */
5914 objfile_type
->builtin_error
5915 = init_type (objfile
, TYPE_CODE_ERROR
, 0, "<unknown type>");
5917 /* The following set of types is used for symbols with no
5918 debug information. */
5919 objfile_type
->nodebug_text_symbol
5920 = init_type (objfile
, TYPE_CODE_FUNC
, TARGET_CHAR_BIT
,
5921 "<text variable, no debug info>");
5922 objfile_type
->nodebug_text_gnu_ifunc_symbol
5923 = init_type (objfile
, TYPE_CODE_FUNC
, TARGET_CHAR_BIT
,
5924 "<text gnu-indirect-function variable, no debug info>");
5925 TYPE_GNU_IFUNC (objfile_type
->nodebug_text_gnu_ifunc_symbol
) = 1;
5926 objfile_type
->nodebug_got_plt_symbol
5927 = init_pointer_type (objfile
, gdbarch_addr_bit (gdbarch
),
5928 "<text from jump slot in .got.plt, no debug info>",
5929 objfile_type
->nodebug_text_symbol
);
5930 objfile_type
->nodebug_data_symbol
5931 = init_nodebug_var_type (objfile
, "<data variable, no debug info>");
5932 objfile_type
->nodebug_unknown_symbol
5933 = init_nodebug_var_type (objfile
, "<variable (not text or data), no debug info>");
5934 objfile_type
->nodebug_tls_symbol
5935 = init_nodebug_var_type (objfile
, "<thread local variable, no debug info>");
5937 /* NOTE: on some targets, addresses and pointers are not necessarily
5941 - gdb's `struct type' always describes the target's
5943 - gdb's `struct value' objects should always hold values in
5945 - gdb's CORE_ADDR values are addresses in the unified virtual
5946 address space that the assembler and linker work with. Thus,
5947 since target_read_memory takes a CORE_ADDR as an argument, it
5948 can access any memory on the target, even if the processor has
5949 separate code and data address spaces.
5951 In this context, objfile_type->builtin_core_addr is a bit odd:
5952 it's a target type for a value the target will never see. It's
5953 only used to hold the values of (typeless) linker symbols, which
5954 are indeed in the unified virtual address space. */
5956 objfile_type
->builtin_core_addr
5957 = init_integer_type (objfile
, gdbarch_addr_bit (gdbarch
), 1,
5960 objfile_type_data
.set (objfile
, objfile_type
);
5961 return objfile_type
;
5964 void _initialize_gdbtypes ();
5966 _initialize_gdbtypes ()
5968 gdbtypes_data
= gdbarch_data_register_post_init (gdbtypes_post_init
);
5970 add_setshow_zuinteger_cmd ("overload", no_class
, &overload_debug
,
5971 _("Set debugging of C++ overloading."),
5972 _("Show debugging of C++ overloading."),
5973 _("When enabled, ranking of the "
5974 "functions is displayed."),
5976 show_overload_debug
,
5977 &setdebuglist
, &showdebuglist
);
5979 /* Add user knob for controlling resolution of opaque types. */
5980 add_setshow_boolean_cmd ("opaque-type-resolution", class_support
,
5981 &opaque_type_resolution
,
5982 _("Set resolution of opaque struct/class/union"
5983 " types (if set before loading symbols)."),
5984 _("Show resolution of opaque struct/class/union"
5985 " types (if set before loading symbols)."),
5987 show_opaque_type_resolution
,
5988 &setlist
, &showlist
);
5990 /* Add an option to permit non-strict type checking. */
5991 add_setshow_boolean_cmd ("type", class_support
,
5992 &strict_type_checking
,
5993 _("Set strict type checking."),
5994 _("Show strict type checking."),
5996 show_strict_type_checking
,
5997 &setchecklist
, &showchecklist
);