1 /* Support routines for manipulating internal types for GDB.
3 Copyright (C) 1992-2020 Free Software Foundation, Inc.
5 Contributed by Cygnus Support, using pieces from other GDB modules.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
28 #include "expression.h"
33 #include "complaints.h"
37 #include "cp-support.h"
39 #include "dwarf2/loc.h"
41 #include "floatformat.h"
44 /* Initialize BADNESS constants. */
46 const struct rank LENGTH_MISMATCH_BADNESS
= {100,0};
48 const struct rank TOO_FEW_PARAMS_BADNESS
= {100,0};
49 const struct rank INCOMPATIBLE_TYPE_BADNESS
= {100,0};
51 const struct rank EXACT_MATCH_BADNESS
= {0,0};
53 const struct rank INTEGER_PROMOTION_BADNESS
= {1,0};
54 const struct rank FLOAT_PROMOTION_BADNESS
= {1,0};
55 const struct rank BASE_PTR_CONVERSION_BADNESS
= {1,0};
56 const struct rank CV_CONVERSION_BADNESS
= {1, 0};
57 const struct rank INTEGER_CONVERSION_BADNESS
= {2,0};
58 const struct rank FLOAT_CONVERSION_BADNESS
= {2,0};
59 const struct rank INT_FLOAT_CONVERSION_BADNESS
= {2,0};
60 const struct rank VOID_PTR_CONVERSION_BADNESS
= {2,0};
61 const struct rank BOOL_CONVERSION_BADNESS
= {3,0};
62 const struct rank BASE_CONVERSION_BADNESS
= {2,0};
63 const struct rank REFERENCE_CONVERSION_BADNESS
= {2,0};
64 const struct rank REFERENCE_SEE_THROUGH_BADNESS
= {0,1};
65 const struct rank NULL_POINTER_CONVERSION_BADNESS
= {2,0};
66 const struct rank NS_POINTER_CONVERSION_BADNESS
= {10,0};
67 const struct rank NS_INTEGER_POINTER_CONVERSION_BADNESS
= {3,0};
69 /* Floatformat pairs. */
70 const struct floatformat
*floatformats_ieee_half
[BFD_ENDIAN_UNKNOWN
] = {
71 &floatformat_ieee_half_big
,
72 &floatformat_ieee_half_little
74 const struct floatformat
*floatformats_ieee_single
[BFD_ENDIAN_UNKNOWN
] = {
75 &floatformat_ieee_single_big
,
76 &floatformat_ieee_single_little
78 const struct floatformat
*floatformats_ieee_double
[BFD_ENDIAN_UNKNOWN
] = {
79 &floatformat_ieee_double_big
,
80 &floatformat_ieee_double_little
82 const struct floatformat
*floatformats_ieee_double_littlebyte_bigword
[BFD_ENDIAN_UNKNOWN
] = {
83 &floatformat_ieee_double_big
,
84 &floatformat_ieee_double_littlebyte_bigword
86 const struct floatformat
*floatformats_i387_ext
[BFD_ENDIAN_UNKNOWN
] = {
87 &floatformat_i387_ext
,
90 const struct floatformat
*floatformats_m68881_ext
[BFD_ENDIAN_UNKNOWN
] = {
91 &floatformat_m68881_ext
,
92 &floatformat_m68881_ext
94 const struct floatformat
*floatformats_arm_ext
[BFD_ENDIAN_UNKNOWN
] = {
95 &floatformat_arm_ext_big
,
96 &floatformat_arm_ext_littlebyte_bigword
98 const struct floatformat
*floatformats_ia64_spill
[BFD_ENDIAN_UNKNOWN
] = {
99 &floatformat_ia64_spill_big
,
100 &floatformat_ia64_spill_little
102 const struct floatformat
*floatformats_ia64_quad
[BFD_ENDIAN_UNKNOWN
] = {
103 &floatformat_ia64_quad_big
,
104 &floatformat_ia64_quad_little
106 const struct floatformat
*floatformats_vax_f
[BFD_ENDIAN_UNKNOWN
] = {
110 const struct floatformat
*floatformats_vax_d
[BFD_ENDIAN_UNKNOWN
] = {
114 const struct floatformat
*floatformats_ibm_long_double
[BFD_ENDIAN_UNKNOWN
] = {
115 &floatformat_ibm_long_double_big
,
116 &floatformat_ibm_long_double_little
119 /* Should opaque types be resolved? */
121 static bool opaque_type_resolution
= true;
123 /* See gdbtypes.h. */
125 unsigned int overload_debug
= 0;
127 /* A flag to enable strict type checking. */
129 static bool strict_type_checking
= true;
131 /* A function to show whether opaque types are resolved. */
134 show_opaque_type_resolution (struct ui_file
*file
, int from_tty
,
135 struct cmd_list_element
*c
,
138 fprintf_filtered (file
, _("Resolution of opaque struct/class/union types "
139 "(if set before loading symbols) is %s.\n"),
143 /* A function to show whether C++ overload debugging is enabled. */
146 show_overload_debug (struct ui_file
*file
, int from_tty
,
147 struct cmd_list_element
*c
, const char *value
)
149 fprintf_filtered (file
, _("Debugging of C++ overloading is %s.\n"),
153 /* A function to show the status of strict type checking. */
156 show_strict_type_checking (struct ui_file
*file
, int from_tty
,
157 struct cmd_list_element
*c
, const char *value
)
159 fprintf_filtered (file
, _("Strict type checking is %s.\n"), value
);
163 /* Allocate a new OBJFILE-associated type structure and fill it
164 with some defaults. Space for the type structure is allocated
165 on the objfile's objfile_obstack. */
168 alloc_type (struct objfile
*objfile
)
172 gdb_assert (objfile
!= NULL
);
174 /* Alloc the structure and start off with all fields zeroed. */
175 type
= OBSTACK_ZALLOC (&objfile
->objfile_obstack
, struct type
);
176 TYPE_MAIN_TYPE (type
) = OBSTACK_ZALLOC (&objfile
->objfile_obstack
,
178 OBJSTAT (objfile
, n_types
++);
180 TYPE_OBJFILE_OWNED (type
) = 1;
181 TYPE_OWNER (type
).objfile
= objfile
;
183 /* Initialize the fields that might not be zero. */
185 TYPE_CODE (type
) = TYPE_CODE_UNDEF
;
186 TYPE_CHAIN (type
) = type
; /* Chain back to itself. */
191 /* Allocate a new GDBARCH-associated type structure and fill it
192 with some defaults. Space for the type structure is allocated
193 on the obstack associated with GDBARCH. */
196 alloc_type_arch (struct gdbarch
*gdbarch
)
200 gdb_assert (gdbarch
!= NULL
);
202 /* Alloc the structure and start off with all fields zeroed. */
204 type
= GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct type
);
205 TYPE_MAIN_TYPE (type
) = GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct main_type
);
207 TYPE_OBJFILE_OWNED (type
) = 0;
208 TYPE_OWNER (type
).gdbarch
= gdbarch
;
210 /* Initialize the fields that might not be zero. */
212 TYPE_CODE (type
) = TYPE_CODE_UNDEF
;
213 TYPE_CHAIN (type
) = type
; /* Chain back to itself. */
218 /* If TYPE is objfile-associated, allocate a new type structure
219 associated with the same objfile. If TYPE is gdbarch-associated,
220 allocate a new type structure associated with the same gdbarch. */
223 alloc_type_copy (const struct type
*type
)
225 if (TYPE_OBJFILE_OWNED (type
))
226 return alloc_type (TYPE_OWNER (type
).objfile
);
228 return alloc_type_arch (TYPE_OWNER (type
).gdbarch
);
231 /* If TYPE is gdbarch-associated, return that architecture.
232 If TYPE is objfile-associated, return that objfile's architecture. */
235 get_type_arch (const struct type
*type
)
237 struct gdbarch
*arch
;
239 if (TYPE_OBJFILE_OWNED (type
))
240 arch
= TYPE_OWNER (type
).objfile
->arch ();
242 arch
= TYPE_OWNER (type
).gdbarch
;
244 /* The ARCH can be NULL if TYPE is associated with neither an objfile nor
245 a gdbarch, however, this is very rare, and even then, in most cases
246 that get_type_arch is called, we assume that a non-NULL value is
248 gdb_assert (arch
!= NULL
);
252 /* See gdbtypes.h. */
255 get_target_type (struct type
*type
)
259 type
= TYPE_TARGET_TYPE (type
);
261 type
= check_typedef (type
);
267 /* See gdbtypes.h. */
270 type_length_units (struct type
*type
)
272 struct gdbarch
*arch
= get_type_arch (type
);
273 int unit_size
= gdbarch_addressable_memory_unit_size (arch
);
275 return TYPE_LENGTH (type
) / unit_size
;
278 /* Alloc a new type instance structure, fill it with some defaults,
279 and point it at OLDTYPE. Allocate the new type instance from the
280 same place as OLDTYPE. */
283 alloc_type_instance (struct type
*oldtype
)
287 /* Allocate the structure. */
289 if (! TYPE_OBJFILE_OWNED (oldtype
))
290 type
= GDBARCH_OBSTACK_ZALLOC (get_type_arch (oldtype
), struct type
);
292 type
= OBSTACK_ZALLOC (&TYPE_OBJFILE (oldtype
)->objfile_obstack
,
295 TYPE_MAIN_TYPE (type
) = TYPE_MAIN_TYPE (oldtype
);
297 TYPE_CHAIN (type
) = type
; /* Chain back to itself for now. */
302 /* Clear all remnants of the previous type at TYPE, in preparation for
303 replacing it with something else. Preserve owner information. */
306 smash_type (struct type
*type
)
308 int objfile_owned
= TYPE_OBJFILE_OWNED (type
);
309 union type_owner owner
= TYPE_OWNER (type
);
311 memset (TYPE_MAIN_TYPE (type
), 0, sizeof (struct main_type
));
313 /* Restore owner information. */
314 TYPE_OBJFILE_OWNED (type
) = objfile_owned
;
315 TYPE_OWNER (type
) = owner
;
317 /* For now, delete the rings. */
318 TYPE_CHAIN (type
) = type
;
320 /* For now, leave the pointer/reference types alone. */
323 /* Lookup a pointer to a type TYPE. TYPEPTR, if nonzero, points
324 to a pointer to memory where the pointer type should be stored.
325 If *TYPEPTR is zero, update it to point to the pointer type we return.
326 We allocate new memory if needed. */
329 make_pointer_type (struct type
*type
, struct type
**typeptr
)
331 struct type
*ntype
; /* New type */
334 ntype
= TYPE_POINTER_TYPE (type
);
339 return ntype
; /* Don't care about alloc,
340 and have new type. */
341 else if (*typeptr
== 0)
343 *typeptr
= ntype
; /* Tracking alloc, and have new type. */
348 if (typeptr
== 0 || *typeptr
== 0) /* We'll need to allocate one. */
350 ntype
= alloc_type_copy (type
);
354 else /* We have storage, but need to reset it. */
357 chain
= TYPE_CHAIN (ntype
);
359 TYPE_CHAIN (ntype
) = chain
;
362 TYPE_TARGET_TYPE (ntype
) = type
;
363 TYPE_POINTER_TYPE (type
) = ntype
;
365 /* FIXME! Assumes the machine has only one representation for pointers! */
368 = gdbarch_ptr_bit (get_type_arch (type
)) / TARGET_CHAR_BIT
;
369 TYPE_CODE (ntype
) = TYPE_CODE_PTR
;
371 /* Mark pointers as unsigned. The target converts between pointers
372 and addresses (CORE_ADDRs) using gdbarch_pointer_to_address and
373 gdbarch_address_to_pointer. */
374 TYPE_UNSIGNED (ntype
) = 1;
376 /* Update the length of all the other variants of this type. */
377 chain
= TYPE_CHAIN (ntype
);
378 while (chain
!= ntype
)
380 TYPE_LENGTH (chain
) = TYPE_LENGTH (ntype
);
381 chain
= TYPE_CHAIN (chain
);
387 /* Given a type TYPE, return a type of pointers to that type.
388 May need to construct such a type if this is the first use. */
391 lookup_pointer_type (struct type
*type
)
393 return make_pointer_type (type
, (struct type
**) 0);
396 /* Lookup a C++ `reference' to a type TYPE. TYPEPTR, if nonzero,
397 points to a pointer to memory where the reference type should be
398 stored. If *TYPEPTR is zero, update it to point to the reference
399 type we return. We allocate new memory if needed. REFCODE denotes
400 the kind of reference type to lookup (lvalue or rvalue reference). */
403 make_reference_type (struct type
*type
, struct type
**typeptr
,
404 enum type_code refcode
)
406 struct type
*ntype
; /* New type */
407 struct type
**reftype
;
410 gdb_assert (refcode
== TYPE_CODE_REF
|| refcode
== TYPE_CODE_RVALUE_REF
);
412 ntype
= (refcode
== TYPE_CODE_REF
? TYPE_REFERENCE_TYPE (type
)
413 : TYPE_RVALUE_REFERENCE_TYPE (type
));
418 return ntype
; /* Don't care about alloc,
419 and have new type. */
420 else if (*typeptr
== 0)
422 *typeptr
= ntype
; /* Tracking alloc, and have new type. */
427 if (typeptr
== 0 || *typeptr
== 0) /* We'll need to allocate one. */
429 ntype
= alloc_type_copy (type
);
433 else /* We have storage, but need to reset it. */
436 chain
= TYPE_CHAIN (ntype
);
438 TYPE_CHAIN (ntype
) = chain
;
441 TYPE_TARGET_TYPE (ntype
) = type
;
442 reftype
= (refcode
== TYPE_CODE_REF
? &TYPE_REFERENCE_TYPE (type
)
443 : &TYPE_RVALUE_REFERENCE_TYPE (type
));
447 /* FIXME! Assume the machine has only one representation for
448 references, and that it matches the (only) representation for
451 TYPE_LENGTH (ntype
) =
452 gdbarch_ptr_bit (get_type_arch (type
)) / TARGET_CHAR_BIT
;
453 TYPE_CODE (ntype
) = refcode
;
457 /* Update the length of all the other variants of this type. */
458 chain
= TYPE_CHAIN (ntype
);
459 while (chain
!= ntype
)
461 TYPE_LENGTH (chain
) = TYPE_LENGTH (ntype
);
462 chain
= TYPE_CHAIN (chain
);
468 /* Same as above, but caller doesn't care about memory allocation
472 lookup_reference_type (struct type
*type
, enum type_code refcode
)
474 return make_reference_type (type
, (struct type
**) 0, refcode
);
477 /* Lookup the lvalue reference type for the type TYPE. */
480 lookup_lvalue_reference_type (struct type
*type
)
482 return lookup_reference_type (type
, TYPE_CODE_REF
);
485 /* Lookup the rvalue reference type for the type TYPE. */
488 lookup_rvalue_reference_type (struct type
*type
)
490 return lookup_reference_type (type
, TYPE_CODE_RVALUE_REF
);
493 /* Lookup a function type that returns type TYPE. TYPEPTR, if
494 nonzero, points to a pointer to memory where the function type
495 should be stored. If *TYPEPTR is zero, update it to point to the
496 function type we return. We allocate new memory if needed. */
499 make_function_type (struct type
*type
, struct type
**typeptr
)
501 struct type
*ntype
; /* New type */
503 if (typeptr
== 0 || *typeptr
== 0) /* We'll need to allocate one. */
505 ntype
= alloc_type_copy (type
);
509 else /* We have storage, but need to reset it. */
515 TYPE_TARGET_TYPE (ntype
) = type
;
517 TYPE_LENGTH (ntype
) = 1;
518 TYPE_CODE (ntype
) = TYPE_CODE_FUNC
;
520 INIT_FUNC_SPECIFIC (ntype
);
525 /* Given a type TYPE, return a type of functions that return that type.
526 May need to construct such a type if this is the first use. */
529 lookup_function_type (struct type
*type
)
531 return make_function_type (type
, (struct type
**) 0);
534 /* Given a type TYPE and argument types, return the appropriate
535 function type. If the final type in PARAM_TYPES is NULL, make a
539 lookup_function_type_with_arguments (struct type
*type
,
541 struct type
**param_types
)
543 struct type
*fn
= make_function_type (type
, (struct type
**) 0);
548 if (param_types
[nparams
- 1] == NULL
)
551 TYPE_VARARGS (fn
) = 1;
553 else if (TYPE_CODE (check_typedef (param_types
[nparams
- 1]))
557 /* Caller should have ensured this. */
558 gdb_assert (nparams
== 0);
559 TYPE_PROTOTYPED (fn
) = 1;
562 TYPE_PROTOTYPED (fn
) = 1;
565 TYPE_NFIELDS (fn
) = nparams
;
567 = (struct field
*) TYPE_ZALLOC (fn
, nparams
* sizeof (struct field
));
568 for (i
= 0; i
< nparams
; ++i
)
569 TYPE_FIELD_TYPE (fn
, i
) = param_types
[i
];
574 /* Identify address space identifier by name --
575 return the integer flag defined in gdbtypes.h. */
578 address_space_name_to_int (struct gdbarch
*gdbarch
,
579 const char *space_identifier
)
583 /* Check for known address space delimiters. */
584 if (!strcmp (space_identifier
, "code"))
585 return TYPE_INSTANCE_FLAG_CODE_SPACE
;
586 else if (!strcmp (space_identifier
, "data"))
587 return TYPE_INSTANCE_FLAG_DATA_SPACE
;
588 else if (gdbarch_address_class_name_to_type_flags_p (gdbarch
)
589 && gdbarch_address_class_name_to_type_flags (gdbarch
,
594 error (_("Unknown address space specifier: \"%s\""), space_identifier
);
597 /* Identify address space identifier by integer flag as defined in
598 gdbtypes.h -- return the string version of the adress space name. */
601 address_space_int_to_name (struct gdbarch
*gdbarch
, int space_flag
)
603 if (space_flag
& TYPE_INSTANCE_FLAG_CODE_SPACE
)
605 else if (space_flag
& TYPE_INSTANCE_FLAG_DATA_SPACE
)
607 else if ((space_flag
& TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL
)
608 && gdbarch_address_class_type_flags_to_name_p (gdbarch
))
609 return gdbarch_address_class_type_flags_to_name (gdbarch
, space_flag
);
614 /* Create a new type with instance flags NEW_FLAGS, based on TYPE.
616 If STORAGE is non-NULL, create the new type instance there.
617 STORAGE must be in the same obstack as TYPE. */
620 make_qualified_type (struct type
*type
, int new_flags
,
621 struct type
*storage
)
628 if (TYPE_INSTANCE_FLAGS (ntype
) == new_flags
)
630 ntype
= TYPE_CHAIN (ntype
);
632 while (ntype
!= type
);
634 /* Create a new type instance. */
636 ntype
= alloc_type_instance (type
);
639 /* If STORAGE was provided, it had better be in the same objfile
640 as TYPE. Otherwise, we can't link it into TYPE's cv chain:
641 if one objfile is freed and the other kept, we'd have
642 dangling pointers. */
643 gdb_assert (TYPE_OBJFILE (type
) == TYPE_OBJFILE (storage
));
646 TYPE_MAIN_TYPE (ntype
) = TYPE_MAIN_TYPE (type
);
647 TYPE_CHAIN (ntype
) = ntype
;
650 /* Pointers or references to the original type are not relevant to
652 TYPE_POINTER_TYPE (ntype
) = (struct type
*) 0;
653 TYPE_REFERENCE_TYPE (ntype
) = (struct type
*) 0;
655 /* Chain the new qualified type to the old type. */
656 TYPE_CHAIN (ntype
) = TYPE_CHAIN (type
);
657 TYPE_CHAIN (type
) = ntype
;
659 /* Now set the instance flags and return the new type. */
660 TYPE_INSTANCE_FLAGS (ntype
) = new_flags
;
662 /* Set length of new type to that of the original type. */
663 TYPE_LENGTH (ntype
) = TYPE_LENGTH (type
);
668 /* Make an address-space-delimited variant of a type -- a type that
669 is identical to the one supplied except that it has an address
670 space attribute attached to it (such as "code" or "data").
672 The space attributes "code" and "data" are for Harvard
673 architectures. The address space attributes are for architectures
674 which have alternately sized pointers or pointers with alternate
678 make_type_with_address_space (struct type
*type
, int space_flag
)
680 int new_flags
= ((TYPE_INSTANCE_FLAGS (type
)
681 & ~(TYPE_INSTANCE_FLAG_CODE_SPACE
682 | TYPE_INSTANCE_FLAG_DATA_SPACE
683 | TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL
))
686 return make_qualified_type (type
, new_flags
, NULL
);
689 /* Make a "c-v" variant of a type -- a type that is identical to the
690 one supplied except that it may have const or volatile attributes
691 CNST is a flag for setting the const attribute
692 VOLTL is a flag for setting the volatile attribute
693 TYPE is the base type whose variant we are creating.
695 If TYPEPTR and *TYPEPTR are non-zero, then *TYPEPTR points to
696 storage to hold the new qualified type; *TYPEPTR and TYPE must be
697 in the same objfile. Otherwise, allocate fresh memory for the new
698 type whereever TYPE lives. If TYPEPTR is non-zero, set it to the
699 new type we construct. */
702 make_cv_type (int cnst
, int voltl
,
704 struct type
**typeptr
)
706 struct type
*ntype
; /* New type */
708 int new_flags
= (TYPE_INSTANCE_FLAGS (type
)
709 & ~(TYPE_INSTANCE_FLAG_CONST
710 | TYPE_INSTANCE_FLAG_VOLATILE
));
713 new_flags
|= TYPE_INSTANCE_FLAG_CONST
;
716 new_flags
|= TYPE_INSTANCE_FLAG_VOLATILE
;
718 if (typeptr
&& *typeptr
!= NULL
)
720 /* TYPE and *TYPEPTR must be in the same objfile. We can't have
721 a C-V variant chain that threads across objfiles: if one
722 objfile gets freed, then the other has a broken C-V chain.
724 This code used to try to copy over the main type from TYPE to
725 *TYPEPTR if they were in different objfiles, but that's
726 wrong, too: TYPE may have a field list or member function
727 lists, which refer to types of their own, etc. etc. The
728 whole shebang would need to be copied over recursively; you
729 can't have inter-objfile pointers. The only thing to do is
730 to leave stub types as stub types, and look them up afresh by
731 name each time you encounter them. */
732 gdb_assert (TYPE_OBJFILE (*typeptr
) == TYPE_OBJFILE (type
));
735 ntype
= make_qualified_type (type
, new_flags
,
736 typeptr
? *typeptr
: NULL
);
744 /* Make a 'restrict'-qualified version of TYPE. */
747 make_restrict_type (struct type
*type
)
749 return make_qualified_type (type
,
750 (TYPE_INSTANCE_FLAGS (type
)
751 | TYPE_INSTANCE_FLAG_RESTRICT
),
755 /* Make a type without const, volatile, or restrict. */
758 make_unqualified_type (struct type
*type
)
760 return make_qualified_type (type
,
761 (TYPE_INSTANCE_FLAGS (type
)
762 & ~(TYPE_INSTANCE_FLAG_CONST
763 | TYPE_INSTANCE_FLAG_VOLATILE
764 | TYPE_INSTANCE_FLAG_RESTRICT
)),
768 /* Make a '_Atomic'-qualified version of TYPE. */
771 make_atomic_type (struct type
*type
)
773 return make_qualified_type (type
,
774 (TYPE_INSTANCE_FLAGS (type
)
775 | TYPE_INSTANCE_FLAG_ATOMIC
),
779 /* Replace the contents of ntype with the type *type. This changes the
780 contents, rather than the pointer for TYPE_MAIN_TYPE (ntype); thus
781 the changes are propogated to all types in the TYPE_CHAIN.
783 In order to build recursive types, it's inevitable that we'll need
784 to update types in place --- but this sort of indiscriminate
785 smashing is ugly, and needs to be replaced with something more
786 controlled. TYPE_MAIN_TYPE is a step in this direction; it's not
787 clear if more steps are needed. */
790 replace_type (struct type
*ntype
, struct type
*type
)
794 /* These two types had better be in the same objfile. Otherwise,
795 the assignment of one type's main type structure to the other
796 will produce a type with references to objects (names; field
797 lists; etc.) allocated on an objfile other than its own. */
798 gdb_assert (TYPE_OBJFILE (ntype
) == TYPE_OBJFILE (type
));
800 *TYPE_MAIN_TYPE (ntype
) = *TYPE_MAIN_TYPE (type
);
802 /* The type length is not a part of the main type. Update it for
803 each type on the variant chain. */
807 /* Assert that this element of the chain has no address-class bits
808 set in its flags. Such type variants might have type lengths
809 which are supposed to be different from the non-address-class
810 variants. This assertion shouldn't ever be triggered because
811 symbol readers which do construct address-class variants don't
812 call replace_type(). */
813 gdb_assert (TYPE_ADDRESS_CLASS_ALL (chain
) == 0);
815 TYPE_LENGTH (chain
) = TYPE_LENGTH (type
);
816 chain
= TYPE_CHAIN (chain
);
818 while (ntype
!= chain
);
820 /* Assert that the two types have equivalent instance qualifiers.
821 This should be true for at least all of our debug readers. */
822 gdb_assert (TYPE_INSTANCE_FLAGS (ntype
) == TYPE_INSTANCE_FLAGS (type
));
825 /* Implement direct support for MEMBER_TYPE in GNU C++.
826 May need to construct such a type if this is the first use.
827 The TYPE is the type of the member. The DOMAIN is the type
828 of the aggregate that the member belongs to. */
831 lookup_memberptr_type (struct type
*type
, struct type
*domain
)
835 mtype
= alloc_type_copy (type
);
836 smash_to_memberptr_type (mtype
, domain
, type
);
840 /* Return a pointer-to-method type, for a method of type TO_TYPE. */
843 lookup_methodptr_type (struct type
*to_type
)
847 mtype
= alloc_type_copy (to_type
);
848 smash_to_methodptr_type (mtype
, to_type
);
852 /* Allocate a stub method whose return type is TYPE. This apparently
853 happens for speed of symbol reading, since parsing out the
854 arguments to the method is cpu-intensive, the way we are doing it.
855 So, we will fill in arguments later. This always returns a fresh
859 allocate_stub_method (struct type
*type
)
863 mtype
= alloc_type_copy (type
);
864 TYPE_CODE (mtype
) = TYPE_CODE_METHOD
;
865 TYPE_LENGTH (mtype
) = 1;
866 TYPE_STUB (mtype
) = 1;
867 TYPE_TARGET_TYPE (mtype
) = type
;
868 /* TYPE_SELF_TYPE (mtype) = unknown yet */
872 /* See gdbtypes.h. */
875 operator== (const dynamic_prop
&l
, const dynamic_prop
&r
)
877 if (l
.kind
!= r
.kind
)
885 return l
.data
.const_val
== r
.data
.const_val
;
886 case PROP_ADDR_OFFSET
:
889 return l
.data
.baton
== r
.data
.baton
;
890 case PROP_VARIANT_PARTS
:
891 return l
.data
.variant_parts
== r
.data
.variant_parts
;
893 return l
.data
.original_type
== r
.data
.original_type
;
896 gdb_assert_not_reached ("unhandled dynamic_prop kind");
899 /* See gdbtypes.h. */
902 operator== (const range_bounds
&l
, const range_bounds
&r
)
904 #define FIELD_EQ(FIELD) (l.FIELD == r.FIELD)
906 return (FIELD_EQ (low
)
908 && FIELD_EQ (flag_upper_bound_is_count
)
909 && FIELD_EQ (flag_bound_evaluated
)
915 /* Create a range type with a dynamic range from LOW_BOUND to
916 HIGH_BOUND, inclusive. See create_range_type for further details. */
919 create_range_type (struct type
*result_type
, struct type
*index_type
,
920 const struct dynamic_prop
*low_bound
,
921 const struct dynamic_prop
*high_bound
,
924 /* The INDEX_TYPE should be a type capable of holding the upper and lower
925 bounds, as such a zero sized, or void type makes no sense. */
926 gdb_assert (TYPE_CODE (index_type
) != TYPE_CODE_VOID
);
927 gdb_assert (TYPE_LENGTH (index_type
) > 0);
929 if (result_type
== NULL
)
930 result_type
= alloc_type_copy (index_type
);
931 TYPE_CODE (result_type
) = TYPE_CODE_RANGE
;
932 TYPE_TARGET_TYPE (result_type
) = index_type
;
933 if (TYPE_STUB (index_type
))
934 TYPE_TARGET_STUB (result_type
) = 1;
936 TYPE_LENGTH (result_type
) = TYPE_LENGTH (check_typedef (index_type
));
938 TYPE_RANGE_DATA (result_type
) = (struct range_bounds
*)
939 TYPE_ZALLOC (result_type
, sizeof (struct range_bounds
));
940 TYPE_RANGE_DATA (result_type
)->low
= *low_bound
;
941 TYPE_RANGE_DATA (result_type
)->high
= *high_bound
;
942 TYPE_RANGE_DATA (result_type
)->bias
= bias
;
944 /* Initialize the stride to be a constant, the value will already be zero
945 thanks to the use of TYPE_ZALLOC above. */
946 TYPE_RANGE_DATA (result_type
)->stride
.kind
= PROP_CONST
;
948 if (low_bound
->kind
== PROP_CONST
&& low_bound
->data
.const_val
>= 0)
949 TYPE_UNSIGNED (result_type
) = 1;
951 /* Ada allows the declaration of range types whose upper bound is
952 less than the lower bound, so checking the lower bound is not
953 enough. Make sure we do not mark a range type whose upper bound
954 is negative as unsigned. */
955 if (high_bound
->kind
== PROP_CONST
&& high_bound
->data
.const_val
< 0)
956 TYPE_UNSIGNED (result_type
) = 0;
958 TYPE_ENDIANITY_NOT_DEFAULT (result_type
)
959 = TYPE_ENDIANITY_NOT_DEFAULT (index_type
);
964 /* See gdbtypes.h. */
967 create_range_type_with_stride (struct type
*result_type
,
968 struct type
*index_type
,
969 const struct dynamic_prop
*low_bound
,
970 const struct dynamic_prop
*high_bound
,
972 const struct dynamic_prop
*stride
,
975 result_type
= create_range_type (result_type
, index_type
, low_bound
,
978 gdb_assert (stride
!= nullptr);
979 TYPE_RANGE_DATA (result_type
)->stride
= *stride
;
980 TYPE_RANGE_DATA (result_type
)->flag_is_byte_stride
= byte_stride_p
;
987 /* Create a range type using either a blank type supplied in
988 RESULT_TYPE, or creating a new type, inheriting the objfile from
991 Indices will be of type INDEX_TYPE, and will range from LOW_BOUND
992 to HIGH_BOUND, inclusive.
994 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
995 sure it is TYPE_CODE_UNDEF before we bash it into a range type? */
998 create_static_range_type (struct type
*result_type
, struct type
*index_type
,
999 LONGEST low_bound
, LONGEST high_bound
)
1001 struct dynamic_prop low
, high
;
1003 low
.kind
= PROP_CONST
;
1004 low
.data
.const_val
= low_bound
;
1006 high
.kind
= PROP_CONST
;
1007 high
.data
.const_val
= high_bound
;
1009 result_type
= create_range_type (result_type
, index_type
, &low
, &high
, 0);
1014 /* Predicate tests whether BOUNDS are static. Returns 1 if all bounds values
1015 are static, otherwise returns 0. */
1018 has_static_range (const struct range_bounds
*bounds
)
1020 /* If the range doesn't have a defined stride then its stride field will
1021 be initialized to the constant 0. */
1022 return (bounds
->low
.kind
== PROP_CONST
1023 && bounds
->high
.kind
== PROP_CONST
1024 && bounds
->stride
.kind
== PROP_CONST
);
1028 /* Set *LOWP and *HIGHP to the lower and upper bounds of discrete type
1029 TYPE. Return 1 if type is a range type, 0 if it is discrete (and
1030 bounds will fit in LONGEST), or -1 otherwise. */
1033 get_discrete_bounds (struct type
*type
, LONGEST
*lowp
, LONGEST
*highp
)
1035 type
= check_typedef (type
);
1036 switch (TYPE_CODE (type
))
1038 case TYPE_CODE_RANGE
:
1039 *lowp
= TYPE_LOW_BOUND (type
);
1040 *highp
= TYPE_HIGH_BOUND (type
);
1042 case TYPE_CODE_ENUM
:
1043 if (TYPE_NFIELDS (type
) > 0)
1045 /* The enums may not be sorted by value, so search all
1049 *lowp
= *highp
= TYPE_FIELD_ENUMVAL (type
, 0);
1050 for (i
= 0; i
< TYPE_NFIELDS (type
); i
++)
1052 if (TYPE_FIELD_ENUMVAL (type
, i
) < *lowp
)
1053 *lowp
= TYPE_FIELD_ENUMVAL (type
, i
);
1054 if (TYPE_FIELD_ENUMVAL (type
, i
) > *highp
)
1055 *highp
= TYPE_FIELD_ENUMVAL (type
, i
);
1058 /* Set unsigned indicator if warranted. */
1061 TYPE_UNSIGNED (type
) = 1;
1070 case TYPE_CODE_BOOL
:
1075 if (TYPE_LENGTH (type
) > sizeof (LONGEST
)) /* Too big */
1077 if (!TYPE_UNSIGNED (type
))
1079 *lowp
= -(1 << (TYPE_LENGTH (type
) * TARGET_CHAR_BIT
- 1));
1080 *highp
= -*lowp
- 1;
1084 case TYPE_CODE_CHAR
:
1086 /* This round-about calculation is to avoid shifting by
1087 TYPE_LENGTH (type) * TARGET_CHAR_BIT, which will not work
1088 if TYPE_LENGTH (type) == sizeof (LONGEST). */
1089 *highp
= 1 << (TYPE_LENGTH (type
) * TARGET_CHAR_BIT
- 1);
1090 *highp
= (*highp
- 1) | *highp
;
1097 /* Assuming TYPE is a simple, non-empty array type, compute its upper
1098 and lower bound. Save the low bound into LOW_BOUND if not NULL.
1099 Save the high bound into HIGH_BOUND if not NULL.
1101 Return 1 if the operation was successful. Return zero otherwise,
1102 in which case the values of LOW_BOUND and HIGH_BOUNDS are unmodified.
1104 We now simply use get_discrete_bounds call to get the values
1105 of the low and high bounds.
1106 get_discrete_bounds can return three values:
1107 1, meaning that index is a range,
1108 0, meaning that index is a discrete type,
1109 or -1 for failure. */
1112 get_array_bounds (struct type
*type
, LONGEST
*low_bound
, LONGEST
*high_bound
)
1114 struct type
*index
= TYPE_INDEX_TYPE (type
);
1122 res
= get_discrete_bounds (index
, &low
, &high
);
1126 /* Check if the array bounds are undefined. */
1128 && ((low_bound
&& TYPE_ARRAY_LOWER_BOUND_IS_UNDEFINED (type
))
1129 || (high_bound
&& TYPE_ARRAY_UPPER_BOUND_IS_UNDEFINED (type
))))
1141 /* Assuming that TYPE is a discrete type and VAL is a valid integer
1142 representation of a value of this type, save the corresponding
1143 position number in POS.
1145 Its differs from VAL only in the case of enumeration types. In
1146 this case, the position number of the value of the first listed
1147 enumeration literal is zero; the position number of the value of
1148 each subsequent enumeration literal is one more than that of its
1149 predecessor in the list.
1151 Return 1 if the operation was successful. Return zero otherwise,
1152 in which case the value of POS is unmodified.
1156 discrete_position (struct type
*type
, LONGEST val
, LONGEST
*pos
)
1158 if (TYPE_CODE (type
) == TYPE_CODE_ENUM
)
1162 for (i
= 0; i
< TYPE_NFIELDS (type
); i
+= 1)
1164 if (val
== TYPE_FIELD_ENUMVAL (type
, i
))
1170 /* Invalid enumeration value. */
1180 /* Create an array type using either a blank type supplied in
1181 RESULT_TYPE, or creating a new type, inheriting the objfile from
1184 Elements will be of type ELEMENT_TYPE, the indices will be of type
1187 BYTE_STRIDE_PROP, when not NULL, provides the array's byte stride.
1188 This byte stride property is added to the resulting array type
1189 as a DYN_PROP_BYTE_STRIDE. As a consequence, the BYTE_STRIDE_PROP
1190 argument can only be used to create types that are objfile-owned
1191 (see add_dyn_prop), meaning that either this function must be called
1192 with an objfile-owned RESULT_TYPE, or an objfile-owned RANGE_TYPE.
1194 BIT_STRIDE is taken into account only when BYTE_STRIDE_PROP is NULL.
1195 If BIT_STRIDE is not zero, build a packed array type whose element
1196 size is BIT_STRIDE. Otherwise, ignore this parameter.
1198 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
1199 sure it is TYPE_CODE_UNDEF before we bash it into an array
1203 create_array_type_with_stride (struct type
*result_type
,
1204 struct type
*element_type
,
1205 struct type
*range_type
,
1206 struct dynamic_prop
*byte_stride_prop
,
1207 unsigned int bit_stride
)
1209 if (byte_stride_prop
!= NULL
1210 && byte_stride_prop
->kind
== PROP_CONST
)
1212 /* The byte stride is actually not dynamic. Pretend we were
1213 called with bit_stride set instead of byte_stride_prop.
1214 This will give us the same result type, while avoiding
1215 the need to handle this as a special case. */
1216 bit_stride
= byte_stride_prop
->data
.const_val
* 8;
1217 byte_stride_prop
= NULL
;
1220 if (result_type
== NULL
)
1221 result_type
= alloc_type_copy (range_type
);
1223 TYPE_CODE (result_type
) = TYPE_CODE_ARRAY
;
1224 TYPE_TARGET_TYPE (result_type
) = element_type
;
1225 if (byte_stride_prop
== NULL
1226 && has_static_range (TYPE_RANGE_DATA (range_type
))
1227 && (!type_not_associated (result_type
)
1228 && !type_not_allocated (result_type
)))
1230 LONGEST low_bound
, high_bound
;
1233 /* If the array itself doesn't provide a stride value then take
1234 whatever stride the range provides. Don't update BIT_STRIDE as
1235 we don't want to place the stride value from the range into this
1236 arrays bit size field. */
1237 stride
= bit_stride
;
1239 stride
= TYPE_BIT_STRIDE (range_type
);
1241 if (get_discrete_bounds (range_type
, &low_bound
, &high_bound
) < 0)
1242 low_bound
= high_bound
= 0;
1243 element_type
= check_typedef (element_type
);
1244 /* Be careful when setting the array length. Ada arrays can be
1245 empty arrays with the high_bound being smaller than the low_bound.
1246 In such cases, the array length should be zero. */
1247 if (high_bound
< low_bound
)
1248 TYPE_LENGTH (result_type
) = 0;
1249 else if (stride
!= 0)
1251 /* Ensure that the type length is always positive, even in the
1252 case where (for example in Fortran) we have a negative
1253 stride. It is possible to have a single element array with a
1254 negative stride in Fortran (this doesn't mean anything
1255 special, it's still just a single element array) so do
1256 consider that case when touching this code. */
1257 LONGEST element_count
= std::abs (high_bound
- low_bound
+ 1);
1258 TYPE_LENGTH (result_type
)
1259 = ((std::abs (stride
) * element_count
) + 7) / 8;
1262 TYPE_LENGTH (result_type
) =
1263 TYPE_LENGTH (element_type
) * (high_bound
- low_bound
+ 1);
1267 /* This type is dynamic and its length needs to be computed
1268 on demand. In the meantime, avoid leaving the TYPE_LENGTH
1269 undefined by setting it to zero. Although we are not expected
1270 to trust TYPE_LENGTH in this case, setting the size to zero
1271 allows us to avoid allocating objects of random sizes in case
1272 we accidently do. */
1273 TYPE_LENGTH (result_type
) = 0;
1276 TYPE_NFIELDS (result_type
) = 1;
1277 TYPE_FIELDS (result_type
) =
1278 (struct field
*) TYPE_ZALLOC (result_type
, sizeof (struct field
));
1279 TYPE_INDEX_TYPE (result_type
) = range_type
;
1280 if (byte_stride_prop
!= NULL
)
1281 add_dyn_prop (DYN_PROP_BYTE_STRIDE
, *byte_stride_prop
, result_type
);
1282 else if (bit_stride
> 0)
1283 TYPE_FIELD_BITSIZE (result_type
, 0) = bit_stride
;
1285 /* TYPE_TARGET_STUB will take care of zero length arrays. */
1286 if (TYPE_LENGTH (result_type
) == 0)
1287 TYPE_TARGET_STUB (result_type
) = 1;
1292 /* Same as create_array_type_with_stride but with no bit_stride
1293 (BIT_STRIDE = 0), thus building an unpacked array. */
1296 create_array_type (struct type
*result_type
,
1297 struct type
*element_type
,
1298 struct type
*range_type
)
1300 return create_array_type_with_stride (result_type
, element_type
,
1301 range_type
, NULL
, 0);
1305 lookup_array_range_type (struct type
*element_type
,
1306 LONGEST low_bound
, LONGEST high_bound
)
1308 struct type
*index_type
;
1309 struct type
*range_type
;
1311 if (TYPE_OBJFILE_OWNED (element_type
))
1312 index_type
= objfile_type (TYPE_OWNER (element_type
).objfile
)->builtin_int
;
1314 index_type
= builtin_type (get_type_arch (element_type
))->builtin_int
;
1315 range_type
= create_static_range_type (NULL
, index_type
,
1316 low_bound
, high_bound
);
1318 return create_array_type (NULL
, element_type
, range_type
);
1321 /* Create a string type using either a blank type supplied in
1322 RESULT_TYPE, or creating a new type. String types are similar
1323 enough to array of char types that we can use create_array_type to
1324 build the basic type and then bash it into a string type.
1326 For fixed length strings, the range type contains 0 as the lower
1327 bound and the length of the string minus one as the upper bound.
1329 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
1330 sure it is TYPE_CODE_UNDEF before we bash it into a string
1334 create_string_type (struct type
*result_type
,
1335 struct type
*string_char_type
,
1336 struct type
*range_type
)
1338 result_type
= create_array_type (result_type
,
1341 TYPE_CODE (result_type
) = TYPE_CODE_STRING
;
1346 lookup_string_range_type (struct type
*string_char_type
,
1347 LONGEST low_bound
, LONGEST high_bound
)
1349 struct type
*result_type
;
1351 result_type
= lookup_array_range_type (string_char_type
,
1352 low_bound
, high_bound
);
1353 TYPE_CODE (result_type
) = TYPE_CODE_STRING
;
1358 create_set_type (struct type
*result_type
, struct type
*domain_type
)
1360 if (result_type
== NULL
)
1361 result_type
= alloc_type_copy (domain_type
);
1363 TYPE_CODE (result_type
) = TYPE_CODE_SET
;
1364 TYPE_NFIELDS (result_type
) = 1;
1365 TYPE_FIELDS (result_type
)
1366 = (struct field
*) TYPE_ZALLOC (result_type
, sizeof (struct field
));
1368 if (!TYPE_STUB (domain_type
))
1370 LONGEST low_bound
, high_bound
, bit_length
;
1372 if (get_discrete_bounds (domain_type
, &low_bound
, &high_bound
) < 0)
1373 low_bound
= high_bound
= 0;
1374 bit_length
= high_bound
- low_bound
+ 1;
1375 TYPE_LENGTH (result_type
)
1376 = (bit_length
+ TARGET_CHAR_BIT
- 1) / TARGET_CHAR_BIT
;
1378 TYPE_UNSIGNED (result_type
) = 1;
1380 TYPE_FIELD_TYPE (result_type
, 0) = domain_type
;
1385 /* Convert ARRAY_TYPE to a vector type. This may modify ARRAY_TYPE
1386 and any array types nested inside it. */
1389 make_vector_type (struct type
*array_type
)
1391 struct type
*inner_array
, *elt_type
;
1394 /* Find the innermost array type, in case the array is
1395 multi-dimensional. */
1396 inner_array
= array_type
;
1397 while (TYPE_CODE (TYPE_TARGET_TYPE (inner_array
)) == TYPE_CODE_ARRAY
)
1398 inner_array
= TYPE_TARGET_TYPE (inner_array
);
1400 elt_type
= TYPE_TARGET_TYPE (inner_array
);
1401 if (TYPE_CODE (elt_type
) == TYPE_CODE_INT
)
1403 flags
= TYPE_INSTANCE_FLAGS (elt_type
) | TYPE_INSTANCE_FLAG_NOTTEXT
;
1404 elt_type
= make_qualified_type (elt_type
, flags
, NULL
);
1405 TYPE_TARGET_TYPE (inner_array
) = elt_type
;
1408 TYPE_VECTOR (array_type
) = 1;
1412 init_vector_type (struct type
*elt_type
, int n
)
1414 struct type
*array_type
;
1416 array_type
= lookup_array_range_type (elt_type
, 0, n
- 1);
1417 make_vector_type (array_type
);
1421 /* Internal routine called by TYPE_SELF_TYPE to return the type that TYPE
1422 belongs to. In c++ this is the class of "this", but TYPE_THIS_TYPE is too
1423 confusing. "self" is a common enough replacement for "this".
1424 TYPE must be one of TYPE_CODE_METHODPTR, TYPE_CODE_MEMBERPTR, or
1425 TYPE_CODE_METHOD. */
1428 internal_type_self_type (struct type
*type
)
1430 switch (TYPE_CODE (type
))
1432 case TYPE_CODE_METHODPTR
:
1433 case TYPE_CODE_MEMBERPTR
:
1434 if (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_NONE
)
1436 gdb_assert (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_SELF_TYPE
);
1437 return TYPE_MAIN_TYPE (type
)->type_specific
.self_type
;
1438 case TYPE_CODE_METHOD
:
1439 if (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_NONE
)
1441 gdb_assert (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_FUNC
);
1442 return TYPE_MAIN_TYPE (type
)->type_specific
.func_stuff
->self_type
;
1444 gdb_assert_not_reached ("bad type");
1448 /* Set the type of the class that TYPE belongs to.
1449 In c++ this is the class of "this".
1450 TYPE must be one of TYPE_CODE_METHODPTR, TYPE_CODE_MEMBERPTR, or
1451 TYPE_CODE_METHOD. */
1454 set_type_self_type (struct type
*type
, struct type
*self_type
)
1456 switch (TYPE_CODE (type
))
1458 case TYPE_CODE_METHODPTR
:
1459 case TYPE_CODE_MEMBERPTR
:
1460 if (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_NONE
)
1461 TYPE_SPECIFIC_FIELD (type
) = TYPE_SPECIFIC_SELF_TYPE
;
1462 gdb_assert (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_SELF_TYPE
);
1463 TYPE_MAIN_TYPE (type
)->type_specific
.self_type
= self_type
;
1465 case TYPE_CODE_METHOD
:
1466 if (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_NONE
)
1467 INIT_FUNC_SPECIFIC (type
);
1468 gdb_assert (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_FUNC
);
1469 TYPE_MAIN_TYPE (type
)->type_specific
.func_stuff
->self_type
= self_type
;
1472 gdb_assert_not_reached ("bad type");
1476 /* Smash TYPE to be a type of pointers to members of SELF_TYPE with type
1477 TO_TYPE. A member pointer is a wierd thing -- it amounts to a
1478 typed offset into a struct, e.g. "an int at offset 8". A MEMBER
1479 TYPE doesn't include the offset (that's the value of the MEMBER
1480 itself), but does include the structure type into which it points
1483 When "smashing" the type, we preserve the objfile that the old type
1484 pointed to, since we aren't changing where the type is actually
1488 smash_to_memberptr_type (struct type
*type
, struct type
*self_type
,
1489 struct type
*to_type
)
1492 TYPE_CODE (type
) = TYPE_CODE_MEMBERPTR
;
1493 TYPE_TARGET_TYPE (type
) = to_type
;
1494 set_type_self_type (type
, self_type
);
1495 /* Assume that a data member pointer is the same size as a normal
1498 = gdbarch_ptr_bit (get_type_arch (to_type
)) / TARGET_CHAR_BIT
;
1501 /* Smash TYPE to be a type of pointer to methods type TO_TYPE.
1503 When "smashing" the type, we preserve the objfile that the old type
1504 pointed to, since we aren't changing where the type is actually
1508 smash_to_methodptr_type (struct type
*type
, struct type
*to_type
)
1511 TYPE_CODE (type
) = TYPE_CODE_METHODPTR
;
1512 TYPE_TARGET_TYPE (type
) = to_type
;
1513 set_type_self_type (type
, TYPE_SELF_TYPE (to_type
));
1514 TYPE_LENGTH (type
) = cplus_method_ptr_size (to_type
);
1517 /* Smash TYPE to be a type of method of SELF_TYPE with type TO_TYPE.
1518 METHOD just means `function that gets an extra "this" argument'.
1520 When "smashing" the type, we preserve the objfile that the old type
1521 pointed to, since we aren't changing where the type is actually
1525 smash_to_method_type (struct type
*type
, struct type
*self_type
,
1526 struct type
*to_type
, struct field
*args
,
1527 int nargs
, int varargs
)
1530 TYPE_CODE (type
) = TYPE_CODE_METHOD
;
1531 TYPE_TARGET_TYPE (type
) = to_type
;
1532 set_type_self_type (type
, self_type
);
1533 TYPE_FIELDS (type
) = args
;
1534 TYPE_NFIELDS (type
) = nargs
;
1536 TYPE_VARARGS (type
) = 1;
1537 TYPE_LENGTH (type
) = 1; /* In practice, this is never needed. */
1540 /* A wrapper of TYPE_NAME which calls error if the type is anonymous.
1541 Since GCC PR debug/47510 DWARF provides associated information to detect the
1542 anonymous class linkage name from its typedef.
1544 Parameter TYPE should not yet have CHECK_TYPEDEF applied, this function will
1548 type_name_or_error (struct type
*type
)
1550 struct type
*saved_type
= type
;
1552 struct objfile
*objfile
;
1554 type
= check_typedef (type
);
1556 name
= TYPE_NAME (type
);
1560 name
= TYPE_NAME (saved_type
);
1561 objfile
= TYPE_OBJFILE (saved_type
);
1562 error (_("Invalid anonymous type %s [in module %s], GCC PR debug/47510 bug?"),
1563 name
? name
: "<anonymous>",
1564 objfile
? objfile_name (objfile
) : "<arch>");
1567 /* Lookup a typedef or primitive type named NAME, visible in lexical
1568 block BLOCK. If NOERR is nonzero, return zero if NAME is not
1569 suitably defined. */
1572 lookup_typename (const struct language_defn
*language
,
1574 const struct block
*block
, int noerr
)
1578 sym
= lookup_symbol_in_language (name
, block
, VAR_DOMAIN
,
1579 language
->la_language
, NULL
).symbol
;
1580 if (sym
!= NULL
&& SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
1581 return SYMBOL_TYPE (sym
);
1585 error (_("No type named %s."), name
);
1589 lookup_unsigned_typename (const struct language_defn
*language
,
1592 char *uns
= (char *) alloca (strlen (name
) + 10);
1594 strcpy (uns
, "unsigned ");
1595 strcpy (uns
+ 9, name
);
1596 return lookup_typename (language
, uns
, NULL
, 0);
1600 lookup_signed_typename (const struct language_defn
*language
, const char *name
)
1603 char *uns
= (char *) alloca (strlen (name
) + 8);
1605 strcpy (uns
, "signed ");
1606 strcpy (uns
+ 7, name
);
1607 t
= lookup_typename (language
, uns
, NULL
, 1);
1608 /* If we don't find "signed FOO" just try again with plain "FOO". */
1611 return lookup_typename (language
, name
, NULL
, 0);
1614 /* Lookup a structure type named "struct NAME",
1615 visible in lexical block BLOCK. */
1618 lookup_struct (const char *name
, const struct block
*block
)
1622 sym
= lookup_symbol (name
, block
, STRUCT_DOMAIN
, 0).symbol
;
1626 error (_("No struct type named %s."), name
);
1628 if (TYPE_CODE (SYMBOL_TYPE (sym
)) != TYPE_CODE_STRUCT
)
1630 error (_("This context has class, union or enum %s, not a struct."),
1633 return (SYMBOL_TYPE (sym
));
1636 /* Lookup a union type named "union NAME",
1637 visible in lexical block BLOCK. */
1640 lookup_union (const char *name
, const struct block
*block
)
1645 sym
= lookup_symbol (name
, block
, STRUCT_DOMAIN
, 0).symbol
;
1648 error (_("No union type named %s."), name
);
1650 t
= SYMBOL_TYPE (sym
);
1652 if (TYPE_CODE (t
) == TYPE_CODE_UNION
)
1655 /* If we get here, it's not a union. */
1656 error (_("This context has class, struct or enum %s, not a union."),
1660 /* Lookup an enum type named "enum NAME",
1661 visible in lexical block BLOCK. */
1664 lookup_enum (const char *name
, const struct block
*block
)
1668 sym
= lookup_symbol (name
, block
, STRUCT_DOMAIN
, 0).symbol
;
1671 error (_("No enum type named %s."), name
);
1673 if (TYPE_CODE (SYMBOL_TYPE (sym
)) != TYPE_CODE_ENUM
)
1675 error (_("This context has class, struct or union %s, not an enum."),
1678 return (SYMBOL_TYPE (sym
));
1681 /* Lookup a template type named "template NAME<TYPE>",
1682 visible in lexical block BLOCK. */
1685 lookup_template_type (const char *name
, struct type
*type
,
1686 const struct block
*block
)
1689 char *nam
= (char *)
1690 alloca (strlen (name
) + strlen (TYPE_NAME (type
)) + 4);
1694 strcat (nam
, TYPE_NAME (type
));
1695 strcat (nam
, " >"); /* FIXME, extra space still introduced in gcc? */
1697 sym
= lookup_symbol (nam
, block
, VAR_DOMAIN
, 0).symbol
;
1701 error (_("No template type named %s."), name
);
1703 if (TYPE_CODE (SYMBOL_TYPE (sym
)) != TYPE_CODE_STRUCT
)
1705 error (_("This context has class, union or enum %s, not a struct."),
1708 return (SYMBOL_TYPE (sym
));
1711 /* See gdbtypes.h. */
1714 lookup_struct_elt (struct type
*type
, const char *name
, int noerr
)
1720 type
= check_typedef (type
);
1721 if (TYPE_CODE (type
) != TYPE_CODE_PTR
1722 && TYPE_CODE (type
) != TYPE_CODE_REF
)
1724 type
= TYPE_TARGET_TYPE (type
);
1727 if (TYPE_CODE (type
) != TYPE_CODE_STRUCT
1728 && TYPE_CODE (type
) != TYPE_CODE_UNION
)
1730 std::string type_name
= type_to_string (type
);
1731 error (_("Type %s is not a structure or union type."),
1732 type_name
.c_str ());
1735 for (i
= TYPE_NFIELDS (type
) - 1; i
>= TYPE_N_BASECLASSES (type
); i
--)
1737 const char *t_field_name
= TYPE_FIELD_NAME (type
, i
);
1739 if (t_field_name
&& (strcmp_iw (t_field_name
, name
) == 0))
1741 return {&TYPE_FIELD (type
, i
), TYPE_FIELD_BITPOS (type
, i
)};
1743 else if (!t_field_name
|| *t_field_name
== '\0')
1746 = lookup_struct_elt (TYPE_FIELD_TYPE (type
, i
), name
, 1);
1747 if (elt
.field
!= NULL
)
1749 elt
.offset
+= TYPE_FIELD_BITPOS (type
, i
);
1755 /* OK, it's not in this class. Recursively check the baseclasses. */
1756 for (i
= TYPE_N_BASECLASSES (type
) - 1; i
>= 0; i
--)
1758 struct_elt elt
= lookup_struct_elt (TYPE_BASECLASS (type
, i
), name
, 1);
1759 if (elt
.field
!= NULL
)
1764 return {nullptr, 0};
1766 std::string type_name
= type_to_string (type
);
1767 error (_("Type %s has no component named %s."), type_name
.c_str (), name
);
1770 /* See gdbtypes.h. */
1773 lookup_struct_elt_type (struct type
*type
, const char *name
, int noerr
)
1775 struct_elt elt
= lookup_struct_elt (type
, name
, noerr
);
1776 if (elt
.field
!= NULL
)
1777 return FIELD_TYPE (*elt
.field
);
1782 /* Store in *MAX the largest number representable by unsigned integer type
1786 get_unsigned_type_max (struct type
*type
, ULONGEST
*max
)
1790 type
= check_typedef (type
);
1791 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_INT
&& TYPE_UNSIGNED (type
));
1792 gdb_assert (TYPE_LENGTH (type
) <= sizeof (ULONGEST
));
1794 /* Written this way to avoid overflow. */
1795 n
= TYPE_LENGTH (type
) * TARGET_CHAR_BIT
;
1796 *max
= ((((ULONGEST
) 1 << (n
- 1)) - 1) << 1) | 1;
1799 /* Store in *MIN, *MAX the smallest and largest numbers representable by
1800 signed integer type TYPE. */
1803 get_signed_type_minmax (struct type
*type
, LONGEST
*min
, LONGEST
*max
)
1807 type
= check_typedef (type
);
1808 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_INT
&& !TYPE_UNSIGNED (type
));
1809 gdb_assert (TYPE_LENGTH (type
) <= sizeof (LONGEST
));
1811 n
= TYPE_LENGTH (type
) * TARGET_CHAR_BIT
;
1812 *min
= -((ULONGEST
) 1 << (n
- 1));
1813 *max
= ((ULONGEST
) 1 << (n
- 1)) - 1;
1816 /* Internal routine called by TYPE_VPTR_FIELDNO to return the value of
1817 cplus_stuff.vptr_fieldno.
1819 cplus_stuff is initialized to cplus_struct_default which does not
1820 set vptr_fieldno to -1 for portability reasons (IWBN to use C99
1821 designated initializers). We cope with that here. */
1824 internal_type_vptr_fieldno (struct type
*type
)
1826 type
= check_typedef (type
);
1827 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_STRUCT
1828 || TYPE_CODE (type
) == TYPE_CODE_UNION
);
1829 if (!HAVE_CPLUS_STRUCT (type
))
1831 return TYPE_RAW_CPLUS_SPECIFIC (type
)->vptr_fieldno
;
1834 /* Set the value of cplus_stuff.vptr_fieldno. */
1837 set_type_vptr_fieldno (struct type
*type
, int fieldno
)
1839 type
= check_typedef (type
);
1840 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_STRUCT
1841 || TYPE_CODE (type
) == TYPE_CODE_UNION
);
1842 if (!HAVE_CPLUS_STRUCT (type
))
1843 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
1844 TYPE_RAW_CPLUS_SPECIFIC (type
)->vptr_fieldno
= fieldno
;
1847 /* Internal routine called by TYPE_VPTR_BASETYPE to return the value of
1848 cplus_stuff.vptr_basetype. */
1851 internal_type_vptr_basetype (struct type
*type
)
1853 type
= check_typedef (type
);
1854 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_STRUCT
1855 || TYPE_CODE (type
) == TYPE_CODE_UNION
);
1856 gdb_assert (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_CPLUS_STUFF
);
1857 return TYPE_RAW_CPLUS_SPECIFIC (type
)->vptr_basetype
;
1860 /* Set the value of cplus_stuff.vptr_basetype. */
1863 set_type_vptr_basetype (struct type
*type
, struct type
*basetype
)
1865 type
= check_typedef (type
);
1866 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_STRUCT
1867 || TYPE_CODE (type
) == TYPE_CODE_UNION
);
1868 if (!HAVE_CPLUS_STRUCT (type
))
1869 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
1870 TYPE_RAW_CPLUS_SPECIFIC (type
)->vptr_basetype
= basetype
;
1873 /* Lookup the vptr basetype/fieldno values for TYPE.
1874 If found store vptr_basetype in *BASETYPEP if non-NULL, and return
1875 vptr_fieldno. Also, if found and basetype is from the same objfile,
1877 If not found, return -1 and ignore BASETYPEP.
1878 Callers should be aware that in some cases (for example,
1879 the type or one of its baseclasses is a stub type and we are
1880 debugging a .o file, or the compiler uses DWARF-2 and is not GCC),
1881 this function will not be able to find the
1882 virtual function table pointer, and vptr_fieldno will remain -1 and
1883 vptr_basetype will remain NULL or incomplete. */
1886 get_vptr_fieldno (struct type
*type
, struct type
**basetypep
)
1888 type
= check_typedef (type
);
1890 if (TYPE_VPTR_FIELDNO (type
) < 0)
1894 /* We must start at zero in case the first (and only) baseclass
1895 is virtual (and hence we cannot share the table pointer). */
1896 for (i
= 0; i
< TYPE_N_BASECLASSES (type
); i
++)
1898 struct type
*baseclass
= check_typedef (TYPE_BASECLASS (type
, i
));
1900 struct type
*basetype
;
1902 fieldno
= get_vptr_fieldno (baseclass
, &basetype
);
1905 /* If the type comes from a different objfile we can't cache
1906 it, it may have a different lifetime. PR 2384 */
1907 if (TYPE_OBJFILE (type
) == TYPE_OBJFILE (basetype
))
1909 set_type_vptr_fieldno (type
, fieldno
);
1910 set_type_vptr_basetype (type
, basetype
);
1913 *basetypep
= basetype
;
1924 *basetypep
= TYPE_VPTR_BASETYPE (type
);
1925 return TYPE_VPTR_FIELDNO (type
);
1930 stub_noname_complaint (void)
1932 complaint (_("stub type has NULL name"));
1935 /* Return nonzero if TYPE has a DYN_PROP_BYTE_STRIDE dynamic property
1936 attached to it, and that property has a non-constant value. */
1939 array_type_has_dynamic_stride (struct type
*type
)
1941 struct dynamic_prop
*prop
= get_dyn_prop (DYN_PROP_BYTE_STRIDE
, type
);
1943 return (prop
!= NULL
&& prop
->kind
!= PROP_CONST
);
1946 /* Worker for is_dynamic_type. */
1949 is_dynamic_type_internal (struct type
*type
, int top_level
)
1951 type
= check_typedef (type
);
1953 /* We only want to recognize references at the outermost level. */
1954 if (top_level
&& TYPE_CODE (type
) == TYPE_CODE_REF
)
1955 type
= check_typedef (TYPE_TARGET_TYPE (type
));
1957 /* Types that have a dynamic TYPE_DATA_LOCATION are considered
1958 dynamic, even if the type itself is statically defined.
1959 From a user's point of view, this may appear counter-intuitive;
1960 but it makes sense in this context, because the point is to determine
1961 whether any part of the type needs to be resolved before it can
1963 if (TYPE_DATA_LOCATION (type
) != NULL
1964 && (TYPE_DATA_LOCATION_KIND (type
) == PROP_LOCEXPR
1965 || TYPE_DATA_LOCATION_KIND (type
) == PROP_LOCLIST
))
1968 if (TYPE_ASSOCIATED_PROP (type
))
1971 if (TYPE_ALLOCATED_PROP (type
))
1974 struct dynamic_prop
*prop
= get_dyn_prop (DYN_PROP_VARIANT_PARTS
, type
);
1975 if (prop
!= nullptr && prop
->kind
!= PROP_TYPE
)
1978 if (TYPE_HAS_DYNAMIC_LENGTH (type
))
1981 switch (TYPE_CODE (type
))
1983 case TYPE_CODE_RANGE
:
1985 /* A range type is obviously dynamic if it has at least one
1986 dynamic bound. But also consider the range type to be
1987 dynamic when its subtype is dynamic, even if the bounds
1988 of the range type are static. It allows us to assume that
1989 the subtype of a static range type is also static. */
1990 return (!has_static_range (TYPE_RANGE_DATA (type
))
1991 || is_dynamic_type_internal (TYPE_TARGET_TYPE (type
), 0));
1994 case TYPE_CODE_STRING
:
1995 /* Strings are very much like an array of characters, and can be
1996 treated as one here. */
1997 case TYPE_CODE_ARRAY
:
1999 gdb_assert (TYPE_NFIELDS (type
) == 1);
2001 /* The array is dynamic if either the bounds are dynamic... */
2002 if (is_dynamic_type_internal (TYPE_INDEX_TYPE (type
), 0))
2004 /* ... or the elements it contains have a dynamic contents... */
2005 if (is_dynamic_type_internal (TYPE_TARGET_TYPE (type
), 0))
2007 /* ... or if it has a dynamic stride... */
2008 if (array_type_has_dynamic_stride (type
))
2013 case TYPE_CODE_STRUCT
:
2014 case TYPE_CODE_UNION
:
2018 bool is_cplus
= HAVE_CPLUS_STRUCT (type
);
2020 for (i
= 0; i
< TYPE_NFIELDS (type
); ++i
)
2022 /* Static fields can be ignored here. */
2023 if (field_is_static (&TYPE_FIELD (type
, i
)))
2025 /* If the field has dynamic type, then so does TYPE. */
2026 if (is_dynamic_type_internal (TYPE_FIELD_TYPE (type
, i
), 0))
2028 /* If the field is at a fixed offset, then it is not
2030 if (TYPE_FIELD_LOC_KIND (type
, i
) != FIELD_LOC_KIND_DWARF_BLOCK
)
2032 /* Do not consider C++ virtual base types to be dynamic
2033 due to the field's offset being dynamic; these are
2034 handled via other means. */
2035 if (is_cplus
&& BASETYPE_VIA_VIRTUAL (type
, i
))
2046 /* See gdbtypes.h. */
2049 is_dynamic_type (struct type
*type
)
2051 return is_dynamic_type_internal (type
, 1);
2054 static struct type
*resolve_dynamic_type_internal
2055 (struct type
*type
, struct property_addr_info
*addr_stack
, int top_level
);
2057 /* Given a dynamic range type (dyn_range_type) and a stack of
2058 struct property_addr_info elements, return a static version
2061 static struct type
*
2062 resolve_dynamic_range (struct type
*dyn_range_type
,
2063 struct property_addr_info
*addr_stack
)
2066 struct type
*static_range_type
, *static_target_type
;
2067 const struct dynamic_prop
*prop
;
2068 struct dynamic_prop low_bound
, high_bound
, stride
;
2070 gdb_assert (TYPE_CODE (dyn_range_type
) == TYPE_CODE_RANGE
);
2072 prop
= &TYPE_RANGE_DATA (dyn_range_type
)->low
;
2073 if (dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2075 low_bound
.kind
= PROP_CONST
;
2076 low_bound
.data
.const_val
= value
;
2080 low_bound
.kind
= PROP_UNDEFINED
;
2081 low_bound
.data
.const_val
= 0;
2084 prop
= &TYPE_RANGE_DATA (dyn_range_type
)->high
;
2085 if (dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2087 high_bound
.kind
= PROP_CONST
;
2088 high_bound
.data
.const_val
= value
;
2090 if (TYPE_RANGE_DATA (dyn_range_type
)->flag_upper_bound_is_count
)
2091 high_bound
.data
.const_val
2092 = low_bound
.data
.const_val
+ high_bound
.data
.const_val
- 1;
2096 high_bound
.kind
= PROP_UNDEFINED
;
2097 high_bound
.data
.const_val
= 0;
2100 bool byte_stride_p
= TYPE_RANGE_DATA (dyn_range_type
)->flag_is_byte_stride
;
2101 prop
= &TYPE_RANGE_DATA (dyn_range_type
)->stride
;
2102 if (dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2104 stride
.kind
= PROP_CONST
;
2105 stride
.data
.const_val
= value
;
2107 /* If we have a bit stride that is not an exact number of bytes then
2108 I really don't think this is going to work with current GDB, the
2109 array indexing code in GDB seems to be pretty heavily tied to byte
2110 offsets right now. Assuming 8 bits in a byte. */
2111 struct gdbarch
*gdbarch
= get_type_arch (dyn_range_type
);
2112 int unit_size
= gdbarch_addressable_memory_unit_size (gdbarch
);
2113 if (!byte_stride_p
&& (value
% (unit_size
* 8)) != 0)
2114 error (_("bit strides that are not a multiple of the byte size "
2115 "are currently not supported"));
2119 stride
.kind
= PROP_UNDEFINED
;
2120 stride
.data
.const_val
= 0;
2121 byte_stride_p
= true;
2125 = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (dyn_range_type
),
2127 LONGEST bias
= TYPE_RANGE_DATA (dyn_range_type
)->bias
;
2128 static_range_type
= create_range_type_with_stride
2129 (copy_type (dyn_range_type
), static_target_type
,
2130 &low_bound
, &high_bound
, bias
, &stride
, byte_stride_p
);
2131 TYPE_RANGE_DATA (static_range_type
)->flag_bound_evaluated
= 1;
2132 return static_range_type
;
2135 /* Resolves dynamic bound values of an array or string type TYPE to static
2136 ones. ADDR_STACK is a stack of struct property_addr_info to be used if
2137 needed during the dynamic resolution. */
2139 static struct type
*
2140 resolve_dynamic_array_or_string (struct type
*type
,
2141 struct property_addr_info
*addr_stack
)
2144 struct type
*elt_type
;
2145 struct type
*range_type
;
2146 struct type
*ary_dim
;
2147 struct dynamic_prop
*prop
;
2148 unsigned int bit_stride
= 0;
2150 /* For dynamic type resolution strings can be treated like arrays of
2152 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_ARRAY
2153 || TYPE_CODE (type
) == TYPE_CODE_STRING
);
2155 type
= copy_type (type
);
2158 range_type
= check_typedef (TYPE_INDEX_TYPE (elt_type
));
2159 range_type
= resolve_dynamic_range (range_type
, addr_stack
);
2161 /* Resolve allocated/associated here before creating a new array type, which
2162 will update the length of the array accordingly. */
2163 prop
= TYPE_ALLOCATED_PROP (type
);
2164 if (prop
!= NULL
&& dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2166 TYPE_DYN_PROP_ADDR (prop
) = value
;
2167 TYPE_DYN_PROP_KIND (prop
) = PROP_CONST
;
2169 prop
= TYPE_ASSOCIATED_PROP (type
);
2170 if (prop
!= NULL
&& dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2172 TYPE_DYN_PROP_ADDR (prop
) = value
;
2173 TYPE_DYN_PROP_KIND (prop
) = PROP_CONST
;
2176 ary_dim
= check_typedef (TYPE_TARGET_TYPE (elt_type
));
2178 if (ary_dim
!= NULL
&& TYPE_CODE (ary_dim
) == TYPE_CODE_ARRAY
)
2179 elt_type
= resolve_dynamic_array_or_string (ary_dim
, addr_stack
);
2181 elt_type
= TYPE_TARGET_TYPE (type
);
2183 prop
= get_dyn_prop (DYN_PROP_BYTE_STRIDE
, type
);
2186 if (dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2188 remove_dyn_prop (DYN_PROP_BYTE_STRIDE
, type
);
2189 bit_stride
= (unsigned int) (value
* 8);
2193 /* Could be a bug in our code, but it could also happen
2194 if the DWARF info is not correct. Issue a warning,
2195 and assume no byte/bit stride (leave bit_stride = 0). */
2196 warning (_("cannot determine array stride for type %s"),
2197 TYPE_NAME (type
) ? TYPE_NAME (type
) : "<no name>");
2201 bit_stride
= TYPE_FIELD_BITSIZE (type
, 0);
2203 return create_array_type_with_stride (type
, elt_type
, range_type
, NULL
,
2207 /* Resolve dynamic bounds of members of the union TYPE to static
2208 bounds. ADDR_STACK is a stack of struct property_addr_info
2209 to be used if needed during the dynamic resolution. */
2211 static struct type
*
2212 resolve_dynamic_union (struct type
*type
,
2213 struct property_addr_info
*addr_stack
)
2215 struct type
*resolved_type
;
2217 unsigned int max_len
= 0;
2219 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_UNION
);
2221 resolved_type
= copy_type (type
);
2222 TYPE_FIELDS (resolved_type
)
2223 = (struct field
*) TYPE_ALLOC (resolved_type
,
2224 TYPE_NFIELDS (resolved_type
)
2225 * sizeof (struct field
));
2226 memcpy (TYPE_FIELDS (resolved_type
),
2228 TYPE_NFIELDS (resolved_type
) * sizeof (struct field
));
2229 for (i
= 0; i
< TYPE_NFIELDS (resolved_type
); ++i
)
2233 if (field_is_static (&TYPE_FIELD (type
, i
)))
2236 t
= resolve_dynamic_type_internal (TYPE_FIELD_TYPE (resolved_type
, i
),
2238 TYPE_FIELD_TYPE (resolved_type
, i
) = t
;
2239 if (TYPE_LENGTH (t
) > max_len
)
2240 max_len
= TYPE_LENGTH (t
);
2243 TYPE_LENGTH (resolved_type
) = max_len
;
2244 return resolved_type
;
2247 /* See gdbtypes.h. */
2250 variant::matches (ULONGEST value
, bool is_unsigned
) const
2252 for (const discriminant_range
&range
: discriminants
)
2253 if (range
.contains (value
, is_unsigned
))
2259 compute_variant_fields_inner (struct type
*type
,
2260 struct property_addr_info
*addr_stack
,
2261 const variant_part
&part
,
2262 std::vector
<bool> &flags
);
2264 /* A helper function to determine which variant fields will be active.
2265 This handles both the variant's direct fields, and any variant
2266 parts embedded in this variant. TYPE is the type we're examining.
2267 ADDR_STACK holds information about the concrete object. VARIANT is
2268 the current variant to be handled. FLAGS is where the results are
2269 stored -- this function sets the Nth element in FLAGS if the
2270 corresponding field is enabled. ENABLED is whether this variant is
2274 compute_variant_fields_recurse (struct type
*type
,
2275 struct property_addr_info
*addr_stack
,
2276 const variant
&variant
,
2277 std::vector
<bool> &flags
,
2280 for (int field
= variant
.first_field
; field
< variant
.last_field
; ++field
)
2281 flags
[field
] = enabled
;
2283 for (const variant_part
&new_part
: variant
.parts
)
2286 compute_variant_fields_inner (type
, addr_stack
, new_part
, flags
);
2289 for (const auto &sub_variant
: new_part
.variants
)
2290 compute_variant_fields_recurse (type
, addr_stack
, sub_variant
,
2296 /* A helper function to determine which variant fields will be active.
2297 This evaluates the discriminant, decides which variant (if any) is
2298 active, and then updates FLAGS to reflect which fields should be
2299 available. TYPE is the type we're examining. ADDR_STACK holds
2300 information about the concrete object. VARIANT is the current
2301 variant to be handled. FLAGS is where the results are stored --
2302 this function sets the Nth element in FLAGS if the corresponding
2303 field is enabled. */
2306 compute_variant_fields_inner (struct type
*type
,
2307 struct property_addr_info
*addr_stack
,
2308 const variant_part
&part
,
2309 std::vector
<bool> &flags
)
2311 /* Evaluate the discriminant. */
2312 gdb::optional
<ULONGEST
> discr_value
;
2313 if (part
.discriminant_index
!= -1)
2315 int idx
= part
.discriminant_index
;
2317 if (TYPE_FIELD_LOC_KIND (type
, idx
) != FIELD_LOC_KIND_BITPOS
)
2318 error (_("Cannot determine struct field location"
2319 " (invalid location kind)"));
2321 if (addr_stack
->valaddr
.data () != NULL
)
2322 discr_value
= unpack_field_as_long (type
, addr_stack
->valaddr
.data (),
2326 CORE_ADDR addr
= (addr_stack
->addr
2327 + (TYPE_FIELD_BITPOS (type
, idx
)
2328 / TARGET_CHAR_BIT
));
2330 LONGEST bitsize
= TYPE_FIELD_BITSIZE (type
, idx
);
2331 LONGEST size
= bitsize
/ 8;
2333 size
= TYPE_LENGTH (TYPE_FIELD_TYPE (type
, idx
));
2335 gdb_byte bits
[sizeof (ULONGEST
)];
2336 read_memory (addr
, bits
, size
);
2338 LONGEST bitpos
= (TYPE_FIELD_BITPOS (type
, idx
)
2341 discr_value
= unpack_bits_as_long (TYPE_FIELD_TYPE (type
, idx
),
2342 bits
, bitpos
, bitsize
);
2346 /* Go through each variant and see which applies. */
2347 const variant
*default_variant
= nullptr;
2348 const variant
*applied_variant
= nullptr;
2349 for (const auto &variant
: part
.variants
)
2351 if (variant
.is_default ())
2352 default_variant
= &variant
;
2353 else if (discr_value
.has_value ()
2354 && variant
.matches (*discr_value
, part
.is_unsigned
))
2356 applied_variant
= &variant
;
2360 if (applied_variant
== nullptr)
2361 applied_variant
= default_variant
;
2363 for (const auto &variant
: part
.variants
)
2364 compute_variant_fields_recurse (type
, addr_stack
, variant
,
2365 flags
, applied_variant
== &variant
);
2368 /* Determine which variant fields are available in TYPE. The enabled
2369 fields are stored in RESOLVED_TYPE. ADDR_STACK holds information
2370 about the concrete object. PARTS describes the top-level variant
2371 parts for this type. */
2374 compute_variant_fields (struct type
*type
,
2375 struct type
*resolved_type
,
2376 struct property_addr_info
*addr_stack
,
2377 const gdb::array_view
<variant_part
> &parts
)
2379 /* Assume all fields are included by default. */
2380 std::vector
<bool> flags (TYPE_NFIELDS (resolved_type
), true);
2382 /* Now disable fields based on the variants that control them. */
2383 for (const auto &part
: parts
)
2384 compute_variant_fields_inner (type
, addr_stack
, part
, flags
);
2386 TYPE_NFIELDS (resolved_type
) = std::count (flags
.begin (), flags
.end (),
2388 TYPE_FIELDS (resolved_type
)
2389 = (struct field
*) TYPE_ALLOC (resolved_type
,
2390 TYPE_NFIELDS (resolved_type
)
2391 * sizeof (struct field
));
2393 for (int i
= 0; i
< TYPE_NFIELDS (type
); ++i
)
2398 TYPE_FIELD (resolved_type
, out
) = TYPE_FIELD (type
, i
);
2403 /* Resolve dynamic bounds of members of the struct TYPE to static
2404 bounds. ADDR_STACK is a stack of struct property_addr_info to
2405 be used if needed during the dynamic resolution. */
2407 static struct type
*
2408 resolve_dynamic_struct (struct type
*type
,
2409 struct property_addr_info
*addr_stack
)
2411 struct type
*resolved_type
;
2413 unsigned resolved_type_bit_length
= 0;
2415 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_STRUCT
);
2416 gdb_assert (TYPE_NFIELDS (type
) > 0);
2418 resolved_type
= copy_type (type
);
2420 struct dynamic_prop
*variant_prop
= get_dyn_prop (DYN_PROP_VARIANT_PARTS
,
2422 if (variant_prop
!= nullptr && variant_prop
->kind
== PROP_VARIANT_PARTS
)
2424 compute_variant_fields (type
, resolved_type
, addr_stack
,
2425 *variant_prop
->data
.variant_parts
);
2426 /* We want to leave the property attached, so that the Rust code
2427 can tell whether the type was originally an enum. */
2428 variant_prop
->kind
= PROP_TYPE
;
2429 variant_prop
->data
.original_type
= type
;
2433 TYPE_FIELDS (resolved_type
)
2434 = (struct field
*) TYPE_ALLOC (resolved_type
,
2435 TYPE_NFIELDS (resolved_type
)
2436 * sizeof (struct field
));
2437 memcpy (TYPE_FIELDS (resolved_type
),
2439 TYPE_NFIELDS (resolved_type
) * sizeof (struct field
));
2442 for (i
= 0; i
< TYPE_NFIELDS (resolved_type
); ++i
)
2444 unsigned new_bit_length
;
2445 struct property_addr_info pinfo
;
2447 if (field_is_static (&TYPE_FIELD (resolved_type
, i
)))
2450 if (TYPE_FIELD_LOC_KIND (resolved_type
, i
) == FIELD_LOC_KIND_DWARF_BLOCK
)
2452 struct dwarf2_property_baton baton
;
2454 = lookup_pointer_type (TYPE_FIELD_TYPE (resolved_type
, i
));
2455 baton
.locexpr
= *TYPE_FIELD_DWARF_BLOCK (resolved_type
, i
);
2457 struct dynamic_prop prop
;
2458 prop
.kind
= PROP_LOCEXPR
;
2459 prop
.data
.baton
= &baton
;
2462 if (dwarf2_evaluate_property (&prop
, nullptr, addr_stack
, &addr
,
2464 SET_FIELD_BITPOS (TYPE_FIELD (resolved_type
, i
),
2465 TARGET_CHAR_BIT
* (addr
- addr_stack
->addr
));
2468 /* As we know this field is not a static field, the field's
2469 field_loc_kind should be FIELD_LOC_KIND_BITPOS. Verify
2470 this is the case, but only trigger a simple error rather
2471 than an internal error if that fails. While failing
2472 that verification indicates a bug in our code, the error
2473 is not severe enough to suggest to the user he stops
2474 his debugging session because of it. */
2475 if (TYPE_FIELD_LOC_KIND (resolved_type
, i
) != FIELD_LOC_KIND_BITPOS
)
2476 error (_("Cannot determine struct field location"
2477 " (invalid location kind)"));
2479 pinfo
.type
= check_typedef (TYPE_FIELD_TYPE (resolved_type
, i
));
2480 pinfo
.valaddr
= addr_stack
->valaddr
;
2483 + (TYPE_FIELD_BITPOS (resolved_type
, i
) / TARGET_CHAR_BIT
));
2484 pinfo
.next
= addr_stack
;
2486 TYPE_FIELD_TYPE (resolved_type
, i
)
2487 = resolve_dynamic_type_internal (TYPE_FIELD_TYPE (resolved_type
, i
),
2489 gdb_assert (TYPE_FIELD_LOC_KIND (resolved_type
, i
)
2490 == FIELD_LOC_KIND_BITPOS
);
2492 new_bit_length
= TYPE_FIELD_BITPOS (resolved_type
, i
);
2493 if (TYPE_FIELD_BITSIZE (resolved_type
, i
) != 0)
2494 new_bit_length
+= TYPE_FIELD_BITSIZE (resolved_type
, i
);
2496 new_bit_length
+= (TYPE_LENGTH (TYPE_FIELD_TYPE (resolved_type
, i
))
2499 /* Normally, we would use the position and size of the last field
2500 to determine the size of the enclosing structure. But GCC seems
2501 to be encoding the position of some fields incorrectly when
2502 the struct contains a dynamic field that is not placed last.
2503 So we compute the struct size based on the field that has
2504 the highest position + size - probably the best we can do. */
2505 if (new_bit_length
> resolved_type_bit_length
)
2506 resolved_type_bit_length
= new_bit_length
;
2509 /* The length of a type won't change for fortran, but it does for C and Ada.
2510 For fortran the size of dynamic fields might change over time but not the
2511 type length of the structure. If we adapt it, we run into problems
2512 when calculating the element offset for arrays of structs. */
2513 if (current_language
->la_language
!= language_fortran
)
2514 TYPE_LENGTH (resolved_type
)
2515 = (resolved_type_bit_length
+ TARGET_CHAR_BIT
- 1) / TARGET_CHAR_BIT
;
2517 /* The Ada language uses this field as a cache for static fixed types: reset
2518 it as RESOLVED_TYPE must have its own static fixed type. */
2519 TYPE_TARGET_TYPE (resolved_type
) = NULL
;
2521 return resolved_type
;
2524 /* Worker for resolved_dynamic_type. */
2526 static struct type
*
2527 resolve_dynamic_type_internal (struct type
*type
,
2528 struct property_addr_info
*addr_stack
,
2531 struct type
*real_type
= check_typedef (type
);
2532 struct type
*resolved_type
= nullptr;
2533 struct dynamic_prop
*prop
;
2536 if (!is_dynamic_type_internal (real_type
, top_level
))
2539 gdb::optional
<CORE_ADDR
> type_length
;
2540 prop
= TYPE_DYNAMIC_LENGTH (type
);
2542 && dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2543 type_length
= value
;
2545 if (TYPE_CODE (type
) == TYPE_CODE_TYPEDEF
)
2547 resolved_type
= copy_type (type
);
2548 TYPE_TARGET_TYPE (resolved_type
)
2549 = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (type
), addr_stack
,
2554 /* Before trying to resolve TYPE, make sure it is not a stub. */
2557 switch (TYPE_CODE (type
))
2561 struct property_addr_info pinfo
;
2563 pinfo
.type
= check_typedef (TYPE_TARGET_TYPE (type
));
2565 if (addr_stack
->valaddr
.data () != NULL
)
2566 pinfo
.addr
= extract_typed_address (addr_stack
->valaddr
.data (),
2569 pinfo
.addr
= read_memory_typed_address (addr_stack
->addr
, type
);
2570 pinfo
.next
= addr_stack
;
2572 resolved_type
= copy_type (type
);
2573 TYPE_TARGET_TYPE (resolved_type
)
2574 = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (type
),
2579 case TYPE_CODE_STRING
:
2580 /* Strings are very much like an array of characters, and can be
2581 treated as one here. */
2582 case TYPE_CODE_ARRAY
:
2583 resolved_type
= resolve_dynamic_array_or_string (type
, addr_stack
);
2586 case TYPE_CODE_RANGE
:
2587 resolved_type
= resolve_dynamic_range (type
, addr_stack
);
2590 case TYPE_CODE_UNION
:
2591 resolved_type
= resolve_dynamic_union (type
, addr_stack
);
2594 case TYPE_CODE_STRUCT
:
2595 resolved_type
= resolve_dynamic_struct (type
, addr_stack
);
2600 if (resolved_type
== nullptr)
2603 if (type_length
.has_value ())
2605 TYPE_LENGTH (resolved_type
) = *type_length
;
2606 remove_dyn_prop (DYN_PROP_BYTE_SIZE
, resolved_type
);
2609 /* Resolve data_location attribute. */
2610 prop
= TYPE_DATA_LOCATION (resolved_type
);
2612 && dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2614 TYPE_DYN_PROP_ADDR (prop
) = value
;
2615 TYPE_DYN_PROP_KIND (prop
) = PROP_CONST
;
2618 return resolved_type
;
2621 /* See gdbtypes.h */
2624 resolve_dynamic_type (struct type
*type
,
2625 gdb::array_view
<const gdb_byte
> valaddr
,
2628 struct property_addr_info pinfo
2629 = {check_typedef (type
), valaddr
, addr
, NULL
};
2631 return resolve_dynamic_type_internal (type
, &pinfo
, 1);
2634 /* See gdbtypes.h */
2636 struct dynamic_prop
*
2637 get_dyn_prop (enum dynamic_prop_node_kind prop_kind
, const struct type
*type
)
2639 struct dynamic_prop_list
*node
= TYPE_DYN_PROP_LIST (type
);
2641 while (node
!= NULL
)
2643 if (node
->prop_kind
== prop_kind
)
2650 /* See gdbtypes.h */
2653 add_dyn_prop (enum dynamic_prop_node_kind prop_kind
, struct dynamic_prop prop
,
2656 struct dynamic_prop_list
*temp
;
2658 gdb_assert (TYPE_OBJFILE_OWNED (type
));
2660 temp
= XOBNEW (&TYPE_OBJFILE (type
)->objfile_obstack
,
2661 struct dynamic_prop_list
);
2662 temp
->prop_kind
= prop_kind
;
2664 temp
->next
= TYPE_DYN_PROP_LIST (type
);
2666 TYPE_DYN_PROP_LIST (type
) = temp
;
2669 /* Remove dynamic property from TYPE in case it exists. */
2672 remove_dyn_prop (enum dynamic_prop_node_kind prop_kind
,
2675 struct dynamic_prop_list
*prev_node
, *curr_node
;
2677 curr_node
= TYPE_DYN_PROP_LIST (type
);
2680 while (NULL
!= curr_node
)
2682 if (curr_node
->prop_kind
== prop_kind
)
2684 /* Update the linked list but don't free anything.
2685 The property was allocated on objstack and it is not known
2686 if we are on top of it. Nevertheless, everything is released
2687 when the complete objstack is freed. */
2688 if (NULL
== prev_node
)
2689 TYPE_DYN_PROP_LIST (type
) = curr_node
->next
;
2691 prev_node
->next
= curr_node
->next
;
2696 prev_node
= curr_node
;
2697 curr_node
= curr_node
->next
;
2701 /* Find the real type of TYPE. This function returns the real type,
2702 after removing all layers of typedefs, and completing opaque or stub
2703 types. Completion changes the TYPE argument, but stripping of
2706 Instance flags (e.g. const/volatile) are preserved as typedefs are
2707 stripped. If necessary a new qualified form of the underlying type
2710 NOTE: This will return a typedef if TYPE_TARGET_TYPE for the typedef has
2711 not been computed and we're either in the middle of reading symbols, or
2712 there was no name for the typedef in the debug info.
2714 NOTE: Lookup of opaque types can throw errors for invalid symbol files.
2715 QUITs in the symbol reading code can also throw.
2716 Thus this function can throw an exception.
2718 If TYPE is a TYPE_CODE_TYPEDEF, its length is updated to the length of
2721 If this is a stubbed struct (i.e. declared as struct foo *), see if
2722 we can find a full definition in some other file. If so, copy this
2723 definition, so we can use it in future. There used to be a comment
2724 (but not any code) that if we don't find a full definition, we'd
2725 set a flag so we don't spend time in the future checking the same
2726 type. That would be a mistake, though--we might load in more
2727 symbols which contain a full definition for the type. */
2730 check_typedef (struct type
*type
)
2732 struct type
*orig_type
= type
;
2733 /* While we're removing typedefs, we don't want to lose qualifiers.
2734 E.g., const/volatile. */
2735 int instance_flags
= TYPE_INSTANCE_FLAGS (type
);
2739 while (TYPE_CODE (type
) == TYPE_CODE_TYPEDEF
)
2741 if (!TYPE_TARGET_TYPE (type
))
2746 /* It is dangerous to call lookup_symbol if we are currently
2747 reading a symtab. Infinite recursion is one danger. */
2748 if (currently_reading_symtab
)
2749 return make_qualified_type (type
, instance_flags
, NULL
);
2751 name
= TYPE_NAME (type
);
2752 /* FIXME: shouldn't we look in STRUCT_DOMAIN and/or
2753 VAR_DOMAIN as appropriate? */
2756 stub_noname_complaint ();
2757 return make_qualified_type (type
, instance_flags
, NULL
);
2759 sym
= lookup_symbol (name
, 0, STRUCT_DOMAIN
, 0).symbol
;
2761 TYPE_TARGET_TYPE (type
) = SYMBOL_TYPE (sym
);
2762 else /* TYPE_CODE_UNDEF */
2763 TYPE_TARGET_TYPE (type
) = alloc_type_arch (get_type_arch (type
));
2765 type
= TYPE_TARGET_TYPE (type
);
2767 /* Preserve the instance flags as we traverse down the typedef chain.
2769 Handling address spaces/classes is nasty, what do we do if there's a
2771 E.g., what if an outer typedef marks the type as class_1 and an inner
2772 typedef marks the type as class_2?
2773 This is the wrong place to do such error checking. We leave it to
2774 the code that created the typedef in the first place to flag the
2775 error. We just pick the outer address space (akin to letting the
2776 outer cast in a chain of casting win), instead of assuming
2777 "it can't happen". */
2779 const int ALL_SPACES
= (TYPE_INSTANCE_FLAG_CODE_SPACE
2780 | TYPE_INSTANCE_FLAG_DATA_SPACE
);
2781 const int ALL_CLASSES
= TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL
;
2782 int new_instance_flags
= TYPE_INSTANCE_FLAGS (type
);
2784 /* Treat code vs data spaces and address classes separately. */
2785 if ((instance_flags
& ALL_SPACES
) != 0)
2786 new_instance_flags
&= ~ALL_SPACES
;
2787 if ((instance_flags
& ALL_CLASSES
) != 0)
2788 new_instance_flags
&= ~ALL_CLASSES
;
2790 instance_flags
|= new_instance_flags
;
2794 /* If this is a struct/class/union with no fields, then check
2795 whether a full definition exists somewhere else. This is for
2796 systems where a type definition with no fields is issued for such
2797 types, instead of identifying them as stub types in the first
2800 if (TYPE_IS_OPAQUE (type
)
2801 && opaque_type_resolution
2802 && !currently_reading_symtab
)
2804 const char *name
= TYPE_NAME (type
);
2805 struct type
*newtype
;
2809 stub_noname_complaint ();
2810 return make_qualified_type (type
, instance_flags
, NULL
);
2812 newtype
= lookup_transparent_type (name
);
2816 /* If the resolved type and the stub are in the same
2817 objfile, then replace the stub type with the real deal.
2818 But if they're in separate objfiles, leave the stub
2819 alone; we'll just look up the transparent type every time
2820 we call check_typedef. We can't create pointers between
2821 types allocated to different objfiles, since they may
2822 have different lifetimes. Trying to copy NEWTYPE over to
2823 TYPE's objfile is pointless, too, since you'll have to
2824 move over any other types NEWTYPE refers to, which could
2825 be an unbounded amount of stuff. */
2826 if (TYPE_OBJFILE (newtype
) == TYPE_OBJFILE (type
))
2827 type
= make_qualified_type (newtype
,
2828 TYPE_INSTANCE_FLAGS (type
),
2834 /* Otherwise, rely on the stub flag being set for opaque/stubbed
2836 else if (TYPE_STUB (type
) && !currently_reading_symtab
)
2838 const char *name
= TYPE_NAME (type
);
2839 /* FIXME: shouldn't we look in STRUCT_DOMAIN and/or VAR_DOMAIN
2845 stub_noname_complaint ();
2846 return make_qualified_type (type
, instance_flags
, NULL
);
2848 sym
= lookup_symbol (name
, 0, STRUCT_DOMAIN
, 0).symbol
;
2851 /* Same as above for opaque types, we can replace the stub
2852 with the complete type only if they are in the same
2854 if (TYPE_OBJFILE (SYMBOL_TYPE(sym
)) == TYPE_OBJFILE (type
))
2855 type
= make_qualified_type (SYMBOL_TYPE (sym
),
2856 TYPE_INSTANCE_FLAGS (type
),
2859 type
= SYMBOL_TYPE (sym
);
2863 if (TYPE_TARGET_STUB (type
))
2865 struct type
*target_type
= check_typedef (TYPE_TARGET_TYPE (type
));
2867 if (TYPE_STUB (target_type
) || TYPE_TARGET_STUB (target_type
))
2869 /* Nothing we can do. */
2871 else if (TYPE_CODE (type
) == TYPE_CODE_RANGE
)
2873 TYPE_LENGTH (type
) = TYPE_LENGTH (target_type
);
2874 TYPE_TARGET_STUB (type
) = 0;
2878 type
= make_qualified_type (type
, instance_flags
, NULL
);
2880 /* Cache TYPE_LENGTH for future use. */
2881 TYPE_LENGTH (orig_type
) = TYPE_LENGTH (type
);
2886 /* Parse a type expression in the string [P..P+LENGTH). If an error
2887 occurs, silently return a void type. */
2889 static struct type
*
2890 safe_parse_type (struct gdbarch
*gdbarch
, char *p
, int length
)
2892 struct ui_file
*saved_gdb_stderr
;
2893 struct type
*type
= NULL
; /* Initialize to keep gcc happy. */
2895 /* Suppress error messages. */
2896 saved_gdb_stderr
= gdb_stderr
;
2897 gdb_stderr
= &null_stream
;
2899 /* Call parse_and_eval_type() without fear of longjmp()s. */
2902 type
= parse_and_eval_type (p
, length
);
2904 catch (const gdb_exception_error
&except
)
2906 type
= builtin_type (gdbarch
)->builtin_void
;
2909 /* Stop suppressing error messages. */
2910 gdb_stderr
= saved_gdb_stderr
;
2915 /* Ugly hack to convert method stubs into method types.
2917 He ain't kiddin'. This demangles the name of the method into a
2918 string including argument types, parses out each argument type,
2919 generates a string casting a zero to that type, evaluates the
2920 string, and stuffs the resulting type into an argtype vector!!!
2921 Then it knows the type of the whole function (including argument
2922 types for overloading), which info used to be in the stab's but was
2923 removed to hack back the space required for them. */
2926 check_stub_method (struct type
*type
, int method_id
, int signature_id
)
2928 struct gdbarch
*gdbarch
= get_type_arch (type
);
2930 char *mangled_name
= gdb_mangle_name (type
, method_id
, signature_id
);
2931 char *demangled_name
= gdb_demangle (mangled_name
,
2932 DMGL_PARAMS
| DMGL_ANSI
);
2933 char *argtypetext
, *p
;
2934 int depth
= 0, argcount
= 1;
2935 struct field
*argtypes
;
2938 /* Make sure we got back a function string that we can use. */
2940 p
= strchr (demangled_name
, '(');
2944 if (demangled_name
== NULL
|| p
== NULL
)
2945 error (_("Internal: Cannot demangle mangled name `%s'."),
2948 /* Now, read in the parameters that define this type. */
2953 if (*p
== '(' || *p
== '<')
2957 else if (*p
== ')' || *p
== '>')
2961 else if (*p
== ',' && depth
== 0)
2969 /* If we read one argument and it was ``void'', don't count it. */
2970 if (startswith (argtypetext
, "(void)"))
2973 /* We need one extra slot, for the THIS pointer. */
2975 argtypes
= (struct field
*)
2976 TYPE_ALLOC (type
, (argcount
+ 1) * sizeof (struct field
));
2979 /* Add THIS pointer for non-static methods. */
2980 f
= TYPE_FN_FIELDLIST1 (type
, method_id
);
2981 if (TYPE_FN_FIELD_STATIC_P (f
, signature_id
))
2985 argtypes
[0].type
= lookup_pointer_type (type
);
2989 if (*p
!= ')') /* () means no args, skip while. */
2994 if (depth
<= 0 && (*p
== ',' || *p
== ')'))
2996 /* Avoid parsing of ellipsis, they will be handled below.
2997 Also avoid ``void'' as above. */
2998 if (strncmp (argtypetext
, "...", p
- argtypetext
) != 0
2999 && strncmp (argtypetext
, "void", p
- argtypetext
) != 0)
3001 argtypes
[argcount
].type
=
3002 safe_parse_type (gdbarch
, argtypetext
, p
- argtypetext
);
3005 argtypetext
= p
+ 1;
3008 if (*p
== '(' || *p
== '<')
3012 else if (*p
== ')' || *p
== '>')
3021 TYPE_FN_FIELD_PHYSNAME (f
, signature_id
) = mangled_name
;
3023 /* Now update the old "stub" type into a real type. */
3024 mtype
= TYPE_FN_FIELD_TYPE (f
, signature_id
);
3025 /* MTYPE may currently be a function (TYPE_CODE_FUNC).
3026 We want a method (TYPE_CODE_METHOD). */
3027 smash_to_method_type (mtype
, type
, TYPE_TARGET_TYPE (mtype
),
3028 argtypes
, argcount
, p
[-2] == '.');
3029 TYPE_STUB (mtype
) = 0;
3030 TYPE_FN_FIELD_STUB (f
, signature_id
) = 0;
3032 xfree (demangled_name
);
3035 /* This is the external interface to check_stub_method, above. This
3036 function unstubs all of the signatures for TYPE's METHOD_ID method
3037 name. After calling this function TYPE_FN_FIELD_STUB will be
3038 cleared for each signature and TYPE_FN_FIELDLIST_NAME will be
3041 This function unfortunately can not die until stabs do. */
3044 check_stub_method_group (struct type
*type
, int method_id
)
3046 int len
= TYPE_FN_FIELDLIST_LENGTH (type
, method_id
);
3047 struct fn_field
*f
= TYPE_FN_FIELDLIST1 (type
, method_id
);
3049 for (int j
= 0; j
< len
; j
++)
3051 if (TYPE_FN_FIELD_STUB (f
, j
))
3052 check_stub_method (type
, method_id
, j
);
3056 /* Ensure it is in .rodata (if available) by working around GCC PR 44690. */
3057 const struct cplus_struct_type cplus_struct_default
= { };
3060 allocate_cplus_struct_type (struct type
*type
)
3062 if (HAVE_CPLUS_STRUCT (type
))
3063 /* Structure was already allocated. Nothing more to do. */
3066 TYPE_SPECIFIC_FIELD (type
) = TYPE_SPECIFIC_CPLUS_STUFF
;
3067 TYPE_RAW_CPLUS_SPECIFIC (type
) = (struct cplus_struct_type
*)
3068 TYPE_ALLOC (type
, sizeof (struct cplus_struct_type
));
3069 *(TYPE_RAW_CPLUS_SPECIFIC (type
)) = cplus_struct_default
;
3070 set_type_vptr_fieldno (type
, -1);
3073 const struct gnat_aux_type gnat_aux_default
=
3076 /* Set the TYPE's type-specific kind to TYPE_SPECIFIC_GNAT_STUFF,
3077 and allocate the associated gnat-specific data. The gnat-specific
3078 data is also initialized to gnat_aux_default. */
3081 allocate_gnat_aux_type (struct type
*type
)
3083 TYPE_SPECIFIC_FIELD (type
) = TYPE_SPECIFIC_GNAT_STUFF
;
3084 TYPE_GNAT_SPECIFIC (type
) = (struct gnat_aux_type
*)
3085 TYPE_ALLOC (type
, sizeof (struct gnat_aux_type
));
3086 *(TYPE_GNAT_SPECIFIC (type
)) = gnat_aux_default
;
3089 /* Helper function to initialize a newly allocated type. Set type code
3090 to CODE and initialize the type-specific fields accordingly. */
3093 set_type_code (struct type
*type
, enum type_code code
)
3095 TYPE_CODE (type
) = code
;
3099 case TYPE_CODE_STRUCT
:
3100 case TYPE_CODE_UNION
:
3101 case TYPE_CODE_NAMESPACE
:
3102 INIT_CPLUS_SPECIFIC (type
);
3105 TYPE_SPECIFIC_FIELD (type
) = TYPE_SPECIFIC_FLOATFORMAT
;
3107 case TYPE_CODE_FUNC
:
3108 INIT_FUNC_SPECIFIC (type
);
3113 /* Helper function to verify floating-point format and size.
3114 BIT is the type size in bits; if BIT equals -1, the size is
3115 determined by the floatformat. Returns size to be used. */
3118 verify_floatformat (int bit
, const struct floatformat
*floatformat
)
3120 gdb_assert (floatformat
!= NULL
);
3123 bit
= floatformat
->totalsize
;
3125 gdb_assert (bit
>= 0);
3126 gdb_assert (bit
>= floatformat
->totalsize
);
3131 /* Return the floating-point format for a floating-point variable of
3134 const struct floatformat
*
3135 floatformat_from_type (const struct type
*type
)
3137 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_FLT
);
3138 gdb_assert (TYPE_FLOATFORMAT (type
));
3139 return TYPE_FLOATFORMAT (type
);
3142 /* Helper function to initialize the standard scalar types.
3144 If NAME is non-NULL, then it is used to initialize the type name.
3145 Note that NAME is not copied; it is required to have a lifetime at
3146 least as long as OBJFILE. */
3149 init_type (struct objfile
*objfile
, enum type_code code
, int bit
,
3154 type
= alloc_type (objfile
);
3155 set_type_code (type
, code
);
3156 gdb_assert ((bit
% TARGET_CHAR_BIT
) == 0);
3157 TYPE_LENGTH (type
) = bit
/ TARGET_CHAR_BIT
;
3158 TYPE_NAME (type
) = name
;
3163 /* Allocate a TYPE_CODE_ERROR type structure associated with OBJFILE,
3164 to use with variables that have no debug info. NAME is the type
3167 static struct type
*
3168 init_nodebug_var_type (struct objfile
*objfile
, const char *name
)
3170 return init_type (objfile
, TYPE_CODE_ERROR
, 0, name
);
3173 /* Allocate a TYPE_CODE_INT type structure associated with OBJFILE.
3174 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
3175 the type's TYPE_UNSIGNED flag. NAME is the type name. */
3178 init_integer_type (struct objfile
*objfile
,
3179 int bit
, int unsigned_p
, const char *name
)
3183 t
= init_type (objfile
, TYPE_CODE_INT
, bit
, name
);
3185 TYPE_UNSIGNED (t
) = 1;
3190 /* Allocate a TYPE_CODE_CHAR type structure associated with OBJFILE.
3191 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
3192 the type's TYPE_UNSIGNED flag. NAME is the type name. */
3195 init_character_type (struct objfile
*objfile
,
3196 int bit
, int unsigned_p
, const char *name
)
3200 t
= init_type (objfile
, TYPE_CODE_CHAR
, bit
, name
);
3202 TYPE_UNSIGNED (t
) = 1;
3207 /* Allocate a TYPE_CODE_BOOL type structure associated with OBJFILE.
3208 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
3209 the type's TYPE_UNSIGNED flag. NAME is the type name. */
3212 init_boolean_type (struct objfile
*objfile
,
3213 int bit
, int unsigned_p
, const char *name
)
3217 t
= init_type (objfile
, TYPE_CODE_BOOL
, bit
, name
);
3219 TYPE_UNSIGNED (t
) = 1;
3224 /* Allocate a TYPE_CODE_FLT type structure associated with OBJFILE.
3225 BIT is the type size in bits; if BIT equals -1, the size is
3226 determined by the floatformat. NAME is the type name. Set the
3227 TYPE_FLOATFORMAT from FLOATFORMATS. BYTE_ORDER is the byte order
3228 to use. If it is BFD_ENDIAN_UNKNOWN (the default), then the byte
3229 order of the objfile's architecture is used. */
3232 init_float_type (struct objfile
*objfile
,
3233 int bit
, const char *name
,
3234 const struct floatformat
**floatformats
,
3235 enum bfd_endian byte_order
)
3237 if (byte_order
== BFD_ENDIAN_UNKNOWN
)
3239 struct gdbarch
*gdbarch
= objfile
->arch ();
3240 byte_order
= gdbarch_byte_order (gdbarch
);
3242 const struct floatformat
*fmt
= floatformats
[byte_order
];
3245 bit
= verify_floatformat (bit
, fmt
);
3246 t
= init_type (objfile
, TYPE_CODE_FLT
, bit
, name
);
3247 TYPE_FLOATFORMAT (t
) = fmt
;
3252 /* Allocate a TYPE_CODE_DECFLOAT type structure associated with OBJFILE.
3253 BIT is the type size in bits. NAME is the type name. */
3256 init_decfloat_type (struct objfile
*objfile
, int bit
, const char *name
)
3260 t
= init_type (objfile
, TYPE_CODE_DECFLOAT
, bit
, name
);
3264 /* Allocate a TYPE_CODE_COMPLEX type structure. NAME is the type
3265 name. TARGET_TYPE is the component type. */
3268 init_complex_type (const char *name
, struct type
*target_type
)
3272 gdb_assert (TYPE_CODE (target_type
) == TYPE_CODE_INT
3273 || TYPE_CODE (target_type
) == TYPE_CODE_FLT
);
3275 if (TYPE_MAIN_TYPE (target_type
)->flds_bnds
.complex_type
== nullptr)
3277 if (name
== nullptr)
3280 = (char *) TYPE_ALLOC (target_type
,
3281 strlen (TYPE_NAME (target_type
))
3282 + strlen ("_Complex ") + 1);
3283 strcpy (new_name
, "_Complex ");
3284 strcat (new_name
, TYPE_NAME (target_type
));
3288 t
= alloc_type_copy (target_type
);
3289 set_type_code (t
, TYPE_CODE_COMPLEX
);
3290 TYPE_LENGTH (t
) = 2 * TYPE_LENGTH (target_type
);
3291 TYPE_NAME (t
) = name
;
3293 TYPE_TARGET_TYPE (t
) = target_type
;
3294 TYPE_MAIN_TYPE (target_type
)->flds_bnds
.complex_type
= t
;
3297 return TYPE_MAIN_TYPE (target_type
)->flds_bnds
.complex_type
;
3300 /* Allocate a TYPE_CODE_PTR type structure associated with OBJFILE.
3301 BIT is the pointer type size in bits. NAME is the type name.
3302 TARGET_TYPE is the pointer target type. Always sets the pointer type's
3303 TYPE_UNSIGNED flag. */
3306 init_pointer_type (struct objfile
*objfile
,
3307 int bit
, const char *name
, struct type
*target_type
)
3311 t
= init_type (objfile
, TYPE_CODE_PTR
, bit
, name
);
3312 TYPE_TARGET_TYPE (t
) = target_type
;
3313 TYPE_UNSIGNED (t
) = 1;
3317 /* See gdbtypes.h. */
3320 type_raw_align (struct type
*type
)
3322 if (type
->align_log2
!= 0)
3323 return 1 << (type
->align_log2
- 1);
3327 /* See gdbtypes.h. */
3330 type_align (struct type
*type
)
3332 /* Check alignment provided in the debug information. */
3333 unsigned raw_align
= type_raw_align (type
);
3337 /* Allow the architecture to provide an alignment. */
3338 struct gdbarch
*arch
= get_type_arch (type
);
3339 ULONGEST align
= gdbarch_type_align (arch
, type
);
3343 switch (TYPE_CODE (type
))
3346 case TYPE_CODE_FUNC
:
3347 case TYPE_CODE_FLAGS
:
3349 case TYPE_CODE_RANGE
:
3351 case TYPE_CODE_ENUM
:
3353 case TYPE_CODE_RVALUE_REF
:
3354 case TYPE_CODE_CHAR
:
3355 case TYPE_CODE_BOOL
:
3356 case TYPE_CODE_DECFLOAT
:
3357 case TYPE_CODE_METHODPTR
:
3358 case TYPE_CODE_MEMBERPTR
:
3359 align
= type_length_units (check_typedef (type
));
3362 case TYPE_CODE_ARRAY
:
3363 case TYPE_CODE_COMPLEX
:
3364 case TYPE_CODE_TYPEDEF
:
3365 align
= type_align (TYPE_TARGET_TYPE (type
));
3368 case TYPE_CODE_STRUCT
:
3369 case TYPE_CODE_UNION
:
3371 int number_of_non_static_fields
= 0;
3372 for (unsigned i
= 0; i
< TYPE_NFIELDS (type
); ++i
)
3374 if (!field_is_static (&TYPE_FIELD (type
, i
)))
3376 number_of_non_static_fields
++;
3377 ULONGEST f_align
= type_align (TYPE_FIELD_TYPE (type
, i
));
3380 /* Don't pretend we know something we don't. */
3384 if (f_align
> align
)
3388 /* A struct with no fields, or with only static fields has an
3390 if (number_of_non_static_fields
== 0)
3396 case TYPE_CODE_STRING
:
3397 /* Not sure what to do here, and these can't appear in C or C++
3401 case TYPE_CODE_VOID
:
3405 case TYPE_CODE_ERROR
:
3406 case TYPE_CODE_METHOD
:
3411 if ((align
& (align
- 1)) != 0)
3413 /* Not a power of 2, so pass. */
3420 /* See gdbtypes.h. */
3423 set_type_align (struct type
*type
, ULONGEST align
)
3425 /* Must be a power of 2. Zero is ok. */
3426 gdb_assert ((align
& (align
- 1)) == 0);
3428 unsigned result
= 0;
3435 if (result
>= (1 << TYPE_ALIGN_BITS
))
3438 type
->align_log2
= result
;
3443 /* Queries on types. */
3446 can_dereference (struct type
*t
)
3448 /* FIXME: Should we return true for references as well as
3450 t
= check_typedef (t
);
3453 && TYPE_CODE (t
) == TYPE_CODE_PTR
3454 && TYPE_CODE (TYPE_TARGET_TYPE (t
)) != TYPE_CODE_VOID
);
3458 is_integral_type (struct type
*t
)
3460 t
= check_typedef (t
);
3463 && ((TYPE_CODE (t
) == TYPE_CODE_INT
)
3464 || (TYPE_CODE (t
) == TYPE_CODE_ENUM
)
3465 || (TYPE_CODE (t
) == TYPE_CODE_FLAGS
)
3466 || (TYPE_CODE (t
) == TYPE_CODE_CHAR
)
3467 || (TYPE_CODE (t
) == TYPE_CODE_RANGE
)
3468 || (TYPE_CODE (t
) == TYPE_CODE_BOOL
)));
3472 is_floating_type (struct type
*t
)
3474 t
= check_typedef (t
);
3477 && ((TYPE_CODE (t
) == TYPE_CODE_FLT
)
3478 || (TYPE_CODE (t
) == TYPE_CODE_DECFLOAT
)));
3481 /* Return true if TYPE is scalar. */
3484 is_scalar_type (struct type
*type
)
3486 type
= check_typedef (type
);
3488 switch (TYPE_CODE (type
))
3490 case TYPE_CODE_ARRAY
:
3491 case TYPE_CODE_STRUCT
:
3492 case TYPE_CODE_UNION
:
3494 case TYPE_CODE_STRING
:
3501 /* Return true if T is scalar, or a composite type which in practice has
3502 the memory layout of a scalar type. E.g., an array or struct with only
3503 one scalar element inside it, or a union with only scalar elements. */
3506 is_scalar_type_recursive (struct type
*t
)
3508 t
= check_typedef (t
);
3510 if (is_scalar_type (t
))
3512 /* Are we dealing with an array or string of known dimensions? */
3513 else if ((TYPE_CODE (t
) == TYPE_CODE_ARRAY
3514 || TYPE_CODE (t
) == TYPE_CODE_STRING
) && TYPE_NFIELDS (t
) == 1
3515 && TYPE_CODE (TYPE_INDEX_TYPE (t
)) == TYPE_CODE_RANGE
)
3517 LONGEST low_bound
, high_bound
;
3518 struct type
*elt_type
= check_typedef (TYPE_TARGET_TYPE (t
));
3520 get_discrete_bounds (TYPE_INDEX_TYPE (t
), &low_bound
, &high_bound
);
3522 return high_bound
== low_bound
&& is_scalar_type_recursive (elt_type
);
3524 /* Are we dealing with a struct with one element? */
3525 else if (TYPE_CODE (t
) == TYPE_CODE_STRUCT
&& TYPE_NFIELDS (t
) == 1)
3526 return is_scalar_type_recursive (TYPE_FIELD_TYPE (t
, 0));
3527 else if (TYPE_CODE (t
) == TYPE_CODE_UNION
)
3529 int i
, n
= TYPE_NFIELDS (t
);
3531 /* If all elements of the union are scalar, then the union is scalar. */
3532 for (i
= 0; i
< n
; i
++)
3533 if (!is_scalar_type_recursive (TYPE_FIELD_TYPE (t
, i
)))
3542 /* Return true is T is a class or a union. False otherwise. */
3545 class_or_union_p (const struct type
*t
)
3547 return (TYPE_CODE (t
) == TYPE_CODE_STRUCT
3548 || TYPE_CODE (t
) == TYPE_CODE_UNION
);
3551 /* A helper function which returns true if types A and B represent the
3552 "same" class type. This is true if the types have the same main
3553 type, or the same name. */
3556 class_types_same_p (const struct type
*a
, const struct type
*b
)
3558 return (TYPE_MAIN_TYPE (a
) == TYPE_MAIN_TYPE (b
)
3559 || (TYPE_NAME (a
) && TYPE_NAME (b
)
3560 && !strcmp (TYPE_NAME (a
), TYPE_NAME (b
))));
3563 /* If BASE is an ancestor of DCLASS return the distance between them.
3564 otherwise return -1;
3568 class B: public A {};
3569 class C: public B {};
3572 distance_to_ancestor (A, A, 0) = 0
3573 distance_to_ancestor (A, B, 0) = 1
3574 distance_to_ancestor (A, C, 0) = 2
3575 distance_to_ancestor (A, D, 0) = 3
3577 If PUBLIC is 1 then only public ancestors are considered,
3578 and the function returns the distance only if BASE is a public ancestor
3582 distance_to_ancestor (A, D, 1) = -1. */
3585 distance_to_ancestor (struct type
*base
, struct type
*dclass
, int is_public
)
3590 base
= check_typedef (base
);
3591 dclass
= check_typedef (dclass
);
3593 if (class_types_same_p (base
, dclass
))
3596 for (i
= 0; i
< TYPE_N_BASECLASSES (dclass
); i
++)
3598 if (is_public
&& ! BASETYPE_VIA_PUBLIC (dclass
, i
))
3601 d
= distance_to_ancestor (base
, TYPE_BASECLASS (dclass
, i
), is_public
);
3609 /* Check whether BASE is an ancestor or base class or DCLASS
3610 Return 1 if so, and 0 if not.
3611 Note: If BASE and DCLASS are of the same type, this function
3612 will return 1. So for some class A, is_ancestor (A, A) will
3616 is_ancestor (struct type
*base
, struct type
*dclass
)
3618 return distance_to_ancestor (base
, dclass
, 0) >= 0;
3621 /* Like is_ancestor, but only returns true when BASE is a public
3622 ancestor of DCLASS. */
3625 is_public_ancestor (struct type
*base
, struct type
*dclass
)
3627 return distance_to_ancestor (base
, dclass
, 1) >= 0;
3630 /* A helper function for is_unique_ancestor. */
3633 is_unique_ancestor_worker (struct type
*base
, struct type
*dclass
,
3635 const gdb_byte
*valaddr
, int embedded_offset
,
3636 CORE_ADDR address
, struct value
*val
)
3640 base
= check_typedef (base
);
3641 dclass
= check_typedef (dclass
);
3643 for (i
= 0; i
< TYPE_N_BASECLASSES (dclass
) && count
< 2; ++i
)
3648 iter
= check_typedef (TYPE_BASECLASS (dclass
, i
));
3650 this_offset
= baseclass_offset (dclass
, i
, valaddr
, embedded_offset
,
3653 if (class_types_same_p (base
, iter
))
3655 /* If this is the first subclass, set *OFFSET and set count
3656 to 1. Otherwise, if this is at the same offset as
3657 previous instances, do nothing. Otherwise, increment
3661 *offset
= this_offset
;
3664 else if (this_offset
== *offset
)
3672 count
+= is_unique_ancestor_worker (base
, iter
, offset
,
3674 embedded_offset
+ this_offset
,
3681 /* Like is_ancestor, but only returns true if BASE is a unique base
3682 class of the type of VAL. */
3685 is_unique_ancestor (struct type
*base
, struct value
*val
)
3689 return is_unique_ancestor_worker (base
, value_type (val
), &offset
,
3690 value_contents_for_printing (val
),
3691 value_embedded_offset (val
),
3692 value_address (val
), val
) == 1;
3695 /* See gdbtypes.h. */
3698 type_byte_order (const struct type
*type
)
3700 bfd_endian byteorder
= gdbarch_byte_order (get_type_arch (type
));
3701 if (TYPE_ENDIANITY_NOT_DEFAULT (type
))
3703 if (byteorder
== BFD_ENDIAN_BIG
)
3704 return BFD_ENDIAN_LITTLE
;
3707 gdb_assert (byteorder
== BFD_ENDIAN_LITTLE
);
3708 return BFD_ENDIAN_BIG
;
3716 /* Overload resolution. */
3718 /* Return the sum of the rank of A with the rank of B. */
3721 sum_ranks (struct rank a
, struct rank b
)
3724 c
.rank
= a
.rank
+ b
.rank
;
3725 c
.subrank
= a
.subrank
+ b
.subrank
;
3729 /* Compare rank A and B and return:
3731 1 if a is better than b
3732 -1 if b is better than a. */
3735 compare_ranks (struct rank a
, struct rank b
)
3737 if (a
.rank
== b
.rank
)
3739 if (a
.subrank
== b
.subrank
)
3741 if (a
.subrank
< b
.subrank
)
3743 if (a
.subrank
> b
.subrank
)
3747 if (a
.rank
< b
.rank
)
3750 /* a.rank > b.rank */
3754 /* Functions for overload resolution begin here. */
3756 /* Compare two badness vectors A and B and return the result.
3757 0 => A and B are identical
3758 1 => A and B are incomparable
3759 2 => A is better than B
3760 3 => A is worse than B */
3763 compare_badness (const badness_vector
&a
, const badness_vector
&b
)
3767 short found_pos
= 0; /* any positives in c? */
3768 short found_neg
= 0; /* any negatives in c? */
3770 /* differing sizes => incomparable */
3771 if (a
.size () != b
.size ())
3774 /* Subtract b from a */
3775 for (i
= 0; i
< a
.size (); i
++)
3777 tmp
= compare_ranks (b
[i
], a
[i
]);
3787 return 1; /* incomparable */
3789 return 3; /* A > B */
3795 return 2; /* A < B */
3797 return 0; /* A == B */
3801 /* Rank a function by comparing its parameter types (PARMS), to the
3802 types of an argument list (ARGS). Return the badness vector. This
3803 has ARGS.size() + 1 entries. */
3806 rank_function (gdb::array_view
<type
*> parms
,
3807 gdb::array_view
<value
*> args
)
3809 /* add 1 for the length-match rank. */
3811 bv
.reserve (1 + args
.size ());
3813 /* First compare the lengths of the supplied lists.
3814 If there is a mismatch, set it to a high value. */
3816 /* pai/1997-06-03 FIXME: when we have debug info about default
3817 arguments and ellipsis parameter lists, we should consider those
3818 and rank the length-match more finely. */
3820 bv
.push_back ((args
.size () != parms
.size ())
3821 ? LENGTH_MISMATCH_BADNESS
3822 : EXACT_MATCH_BADNESS
);
3824 /* Now rank all the parameters of the candidate function. */
3825 size_t min_len
= std::min (parms
.size (), args
.size ());
3827 for (size_t i
= 0; i
< min_len
; i
++)
3828 bv
.push_back (rank_one_type (parms
[i
], value_type (args
[i
]),
3831 /* If more arguments than parameters, add dummy entries. */
3832 for (size_t i
= min_len
; i
< args
.size (); i
++)
3833 bv
.push_back (TOO_FEW_PARAMS_BADNESS
);
3838 /* Compare the names of two integer types, assuming that any sign
3839 qualifiers have been checked already. We do it this way because
3840 there may be an "int" in the name of one of the types. */
3843 integer_types_same_name_p (const char *first
, const char *second
)
3845 int first_p
, second_p
;
3847 /* If both are shorts, return 1; if neither is a short, keep
3849 first_p
= (strstr (first
, "short") != NULL
);
3850 second_p
= (strstr (second
, "short") != NULL
);
3851 if (first_p
&& second_p
)
3853 if (first_p
|| second_p
)
3856 /* Likewise for long. */
3857 first_p
= (strstr (first
, "long") != NULL
);
3858 second_p
= (strstr (second
, "long") != NULL
);
3859 if (first_p
&& second_p
)
3861 if (first_p
|| second_p
)
3864 /* Likewise for char. */
3865 first_p
= (strstr (first
, "char") != NULL
);
3866 second_p
= (strstr (second
, "char") != NULL
);
3867 if (first_p
&& second_p
)
3869 if (first_p
|| second_p
)
3872 /* They must both be ints. */
3876 /* Compares type A to type B. Returns true if they represent the same
3877 type, false otherwise. */
3880 types_equal (struct type
*a
, struct type
*b
)
3882 /* Identical type pointers. */
3883 /* However, this still doesn't catch all cases of same type for b
3884 and a. The reason is that builtin types are different from
3885 the same ones constructed from the object. */
3889 /* Resolve typedefs */
3890 if (TYPE_CODE (a
) == TYPE_CODE_TYPEDEF
)
3891 a
= check_typedef (a
);
3892 if (TYPE_CODE (b
) == TYPE_CODE_TYPEDEF
)
3893 b
= check_typedef (b
);
3895 /* If after resolving typedefs a and b are not of the same type
3896 code then they are not equal. */
3897 if (TYPE_CODE (a
) != TYPE_CODE (b
))
3900 /* If a and b are both pointers types or both reference types then
3901 they are equal of the same type iff the objects they refer to are
3902 of the same type. */
3903 if (TYPE_CODE (a
) == TYPE_CODE_PTR
3904 || TYPE_CODE (a
) == TYPE_CODE_REF
)
3905 return types_equal (TYPE_TARGET_TYPE (a
),
3906 TYPE_TARGET_TYPE (b
));
3908 /* Well, damnit, if the names are exactly the same, I'll say they
3909 are exactly the same. This happens when we generate method
3910 stubs. The types won't point to the same address, but they
3911 really are the same. */
3913 if (TYPE_NAME (a
) && TYPE_NAME (b
)
3914 && strcmp (TYPE_NAME (a
), TYPE_NAME (b
)) == 0)
3917 /* Check if identical after resolving typedefs. */
3921 /* Two function types are equal if their argument and return types
3923 if (TYPE_CODE (a
) == TYPE_CODE_FUNC
)
3927 if (TYPE_NFIELDS (a
) != TYPE_NFIELDS (b
))
3930 if (!types_equal (TYPE_TARGET_TYPE (a
), TYPE_TARGET_TYPE (b
)))
3933 for (i
= 0; i
< TYPE_NFIELDS (a
); ++i
)
3934 if (!types_equal (TYPE_FIELD_TYPE (a
, i
), TYPE_FIELD_TYPE (b
, i
)))
3943 /* Deep comparison of types. */
3945 /* An entry in the type-equality bcache. */
3947 struct type_equality_entry
3949 type_equality_entry (struct type
*t1
, struct type
*t2
)
3955 struct type
*type1
, *type2
;
3958 /* A helper function to compare two strings. Returns true if they are
3959 the same, false otherwise. Handles NULLs properly. */
3962 compare_maybe_null_strings (const char *s
, const char *t
)
3964 if (s
== NULL
|| t
== NULL
)
3966 return strcmp (s
, t
) == 0;
3969 /* A helper function for check_types_worklist that checks two types for
3970 "deep" equality. Returns true if the types are considered the
3971 same, false otherwise. */
3974 check_types_equal (struct type
*type1
, struct type
*type2
,
3975 std::vector
<type_equality_entry
> *worklist
)
3977 type1
= check_typedef (type1
);
3978 type2
= check_typedef (type2
);
3983 if (TYPE_CODE (type1
) != TYPE_CODE (type2
)
3984 || TYPE_LENGTH (type1
) != TYPE_LENGTH (type2
)
3985 || TYPE_UNSIGNED (type1
) != TYPE_UNSIGNED (type2
)
3986 || TYPE_NOSIGN (type1
) != TYPE_NOSIGN (type2
)
3987 || TYPE_ENDIANITY_NOT_DEFAULT (type1
) != TYPE_ENDIANITY_NOT_DEFAULT (type2
)
3988 || TYPE_VARARGS (type1
) != TYPE_VARARGS (type2
)
3989 || TYPE_VECTOR (type1
) != TYPE_VECTOR (type2
)
3990 || TYPE_NOTTEXT (type1
) != TYPE_NOTTEXT (type2
)
3991 || TYPE_INSTANCE_FLAGS (type1
) != TYPE_INSTANCE_FLAGS (type2
)
3992 || TYPE_NFIELDS (type1
) != TYPE_NFIELDS (type2
))
3995 if (!compare_maybe_null_strings (TYPE_NAME (type1
), TYPE_NAME (type2
)))
3997 if (!compare_maybe_null_strings (TYPE_NAME (type1
), TYPE_NAME (type2
)))
4000 if (TYPE_CODE (type1
) == TYPE_CODE_RANGE
)
4002 if (*TYPE_RANGE_DATA (type1
) != *TYPE_RANGE_DATA (type2
))
4009 for (i
= 0; i
< TYPE_NFIELDS (type1
); ++i
)
4011 const struct field
*field1
= &TYPE_FIELD (type1
, i
);
4012 const struct field
*field2
= &TYPE_FIELD (type2
, i
);
4014 if (FIELD_ARTIFICIAL (*field1
) != FIELD_ARTIFICIAL (*field2
)
4015 || FIELD_BITSIZE (*field1
) != FIELD_BITSIZE (*field2
)
4016 || FIELD_LOC_KIND (*field1
) != FIELD_LOC_KIND (*field2
))
4018 if (!compare_maybe_null_strings (FIELD_NAME (*field1
),
4019 FIELD_NAME (*field2
)))
4021 switch (FIELD_LOC_KIND (*field1
))
4023 case FIELD_LOC_KIND_BITPOS
:
4024 if (FIELD_BITPOS (*field1
) != FIELD_BITPOS (*field2
))
4027 case FIELD_LOC_KIND_ENUMVAL
:
4028 if (FIELD_ENUMVAL (*field1
) != FIELD_ENUMVAL (*field2
))
4031 case FIELD_LOC_KIND_PHYSADDR
:
4032 if (FIELD_STATIC_PHYSADDR (*field1
)
4033 != FIELD_STATIC_PHYSADDR (*field2
))
4036 case FIELD_LOC_KIND_PHYSNAME
:
4037 if (!compare_maybe_null_strings (FIELD_STATIC_PHYSNAME (*field1
),
4038 FIELD_STATIC_PHYSNAME (*field2
)))
4041 case FIELD_LOC_KIND_DWARF_BLOCK
:
4043 struct dwarf2_locexpr_baton
*block1
, *block2
;
4045 block1
= FIELD_DWARF_BLOCK (*field1
);
4046 block2
= FIELD_DWARF_BLOCK (*field2
);
4047 if (block1
->per_cu
!= block2
->per_cu
4048 || block1
->size
!= block2
->size
4049 || memcmp (block1
->data
, block2
->data
, block1
->size
) != 0)
4054 internal_error (__FILE__
, __LINE__
, _("Unsupported field kind "
4055 "%d by check_types_equal"),
4056 FIELD_LOC_KIND (*field1
));
4059 worklist
->emplace_back (FIELD_TYPE (*field1
), FIELD_TYPE (*field2
));
4063 if (TYPE_TARGET_TYPE (type1
) != NULL
)
4065 if (TYPE_TARGET_TYPE (type2
) == NULL
)
4068 worklist
->emplace_back (TYPE_TARGET_TYPE (type1
),
4069 TYPE_TARGET_TYPE (type2
));
4071 else if (TYPE_TARGET_TYPE (type2
) != NULL
)
4077 /* Check types on a worklist for equality. Returns false if any pair
4078 is not equal, true if they are all considered equal. */
4081 check_types_worklist (std::vector
<type_equality_entry
> *worklist
,
4084 while (!worklist
->empty ())
4088 struct type_equality_entry entry
= std::move (worklist
->back ());
4089 worklist
->pop_back ();
4091 /* If the type pair has already been visited, we know it is
4093 cache
->insert (&entry
, sizeof (entry
), &added
);
4097 if (!check_types_equal (entry
.type1
, entry
.type2
, worklist
))
4104 /* Return true if types TYPE1 and TYPE2 are equal, as determined by a
4105 "deep comparison". Otherwise return false. */
4108 types_deeply_equal (struct type
*type1
, struct type
*type2
)
4110 std::vector
<type_equality_entry
> worklist
;
4112 gdb_assert (type1
!= NULL
&& type2
!= NULL
);
4114 /* Early exit for the simple case. */
4118 gdb::bcache
cache (nullptr, nullptr);
4119 worklist
.emplace_back (type1
, type2
);
4120 return check_types_worklist (&worklist
, &cache
);
4123 /* Allocated status of type TYPE. Return zero if type TYPE is allocated.
4124 Otherwise return one. */
4127 type_not_allocated (const struct type
*type
)
4129 struct dynamic_prop
*prop
= TYPE_ALLOCATED_PROP (type
);
4131 return (prop
&& TYPE_DYN_PROP_KIND (prop
) == PROP_CONST
4132 && !TYPE_DYN_PROP_ADDR (prop
));
4135 /* Associated status of type TYPE. Return zero if type TYPE is associated.
4136 Otherwise return one. */
4139 type_not_associated (const struct type
*type
)
4141 struct dynamic_prop
*prop
= TYPE_ASSOCIATED_PROP (type
);
4143 return (prop
&& TYPE_DYN_PROP_KIND (prop
) == PROP_CONST
4144 && !TYPE_DYN_PROP_ADDR (prop
));
4147 /* rank_one_type helper for when PARM's type code is TYPE_CODE_PTR. */
4150 rank_one_type_parm_ptr (struct type
*parm
, struct type
*arg
, struct value
*value
)
4152 struct rank rank
= {0,0};
4154 switch (TYPE_CODE (arg
))
4158 /* Allowed pointer conversions are:
4159 (a) pointer to void-pointer conversion. */
4160 if (TYPE_CODE (TYPE_TARGET_TYPE (parm
)) == TYPE_CODE_VOID
)
4161 return VOID_PTR_CONVERSION_BADNESS
;
4163 /* (b) pointer to ancestor-pointer conversion. */
4164 rank
.subrank
= distance_to_ancestor (TYPE_TARGET_TYPE (parm
),
4165 TYPE_TARGET_TYPE (arg
),
4167 if (rank
.subrank
>= 0)
4168 return sum_ranks (BASE_PTR_CONVERSION_BADNESS
, rank
);
4170 return INCOMPATIBLE_TYPE_BADNESS
;
4171 case TYPE_CODE_ARRAY
:
4173 struct type
*t1
= TYPE_TARGET_TYPE (parm
);
4174 struct type
*t2
= TYPE_TARGET_TYPE (arg
);
4176 if (types_equal (t1
, t2
))
4178 /* Make sure they are CV equal. */
4179 if (TYPE_CONST (t1
) != TYPE_CONST (t2
))
4180 rank
.subrank
|= CV_CONVERSION_CONST
;
4181 if (TYPE_VOLATILE (t1
) != TYPE_VOLATILE (t2
))
4182 rank
.subrank
|= CV_CONVERSION_VOLATILE
;
4183 if (rank
.subrank
!= 0)
4184 return sum_ranks (CV_CONVERSION_BADNESS
, rank
);
4185 return EXACT_MATCH_BADNESS
;
4187 return INCOMPATIBLE_TYPE_BADNESS
;
4189 case TYPE_CODE_FUNC
:
4190 return rank_one_type (TYPE_TARGET_TYPE (parm
), arg
, NULL
);
4192 if (value
!= NULL
&& TYPE_CODE (value_type (value
)) == TYPE_CODE_INT
)
4194 if (value_as_long (value
) == 0)
4196 /* Null pointer conversion: allow it to be cast to a pointer.
4197 [4.10.1 of C++ standard draft n3290] */
4198 return NULL_POINTER_CONVERSION_BADNESS
;
4202 /* If type checking is disabled, allow the conversion. */
4203 if (!strict_type_checking
)
4204 return NS_INTEGER_POINTER_CONVERSION_BADNESS
;
4208 case TYPE_CODE_ENUM
:
4209 case TYPE_CODE_FLAGS
:
4210 case TYPE_CODE_CHAR
:
4211 case TYPE_CODE_RANGE
:
4212 case TYPE_CODE_BOOL
:
4214 return INCOMPATIBLE_TYPE_BADNESS
;
4218 /* rank_one_type helper for when PARM's type code is TYPE_CODE_ARRAY. */
4221 rank_one_type_parm_array (struct type
*parm
, struct type
*arg
, struct value
*value
)
4223 switch (TYPE_CODE (arg
))
4226 case TYPE_CODE_ARRAY
:
4227 return rank_one_type (TYPE_TARGET_TYPE (parm
),
4228 TYPE_TARGET_TYPE (arg
), NULL
);
4230 return INCOMPATIBLE_TYPE_BADNESS
;
4234 /* rank_one_type helper for when PARM's type code is TYPE_CODE_FUNC. */
4237 rank_one_type_parm_func (struct type
*parm
, struct type
*arg
, struct value
*value
)
4239 switch (TYPE_CODE (arg
))
4241 case TYPE_CODE_PTR
: /* funcptr -> func */
4242 return rank_one_type (parm
, TYPE_TARGET_TYPE (arg
), NULL
);
4244 return INCOMPATIBLE_TYPE_BADNESS
;
4248 /* rank_one_type helper for when PARM's type code is TYPE_CODE_INT. */
4251 rank_one_type_parm_int (struct type
*parm
, struct type
*arg
, struct value
*value
)
4253 switch (TYPE_CODE (arg
))
4256 if (TYPE_LENGTH (arg
) == TYPE_LENGTH (parm
))
4258 /* Deal with signed, unsigned, and plain chars and
4259 signed and unsigned ints. */
4260 if (TYPE_NOSIGN (parm
))
4262 /* This case only for character types. */
4263 if (TYPE_NOSIGN (arg
))
4264 return EXACT_MATCH_BADNESS
; /* plain char -> plain char */
4265 else /* signed/unsigned char -> plain char */
4266 return INTEGER_CONVERSION_BADNESS
;
4268 else if (TYPE_UNSIGNED (parm
))
4270 if (TYPE_UNSIGNED (arg
))
4272 /* unsigned int -> unsigned int, or
4273 unsigned long -> unsigned long */
4274 if (integer_types_same_name_p (TYPE_NAME (parm
),
4276 return EXACT_MATCH_BADNESS
;
4277 else if (integer_types_same_name_p (TYPE_NAME (arg
),
4279 && integer_types_same_name_p (TYPE_NAME (parm
),
4281 /* unsigned int -> unsigned long */
4282 return INTEGER_PROMOTION_BADNESS
;
4284 /* unsigned long -> unsigned int */
4285 return INTEGER_CONVERSION_BADNESS
;
4289 if (integer_types_same_name_p (TYPE_NAME (arg
),
4291 && integer_types_same_name_p (TYPE_NAME (parm
),
4293 /* signed long -> unsigned int */
4294 return INTEGER_CONVERSION_BADNESS
;
4296 /* signed int/long -> unsigned int/long */
4297 return INTEGER_CONVERSION_BADNESS
;
4300 else if (!TYPE_NOSIGN (arg
) && !TYPE_UNSIGNED (arg
))
4302 if (integer_types_same_name_p (TYPE_NAME (parm
),
4304 return EXACT_MATCH_BADNESS
;
4305 else if (integer_types_same_name_p (TYPE_NAME (arg
),
4307 && integer_types_same_name_p (TYPE_NAME (parm
),
4309 return INTEGER_PROMOTION_BADNESS
;
4311 return INTEGER_CONVERSION_BADNESS
;
4314 return INTEGER_CONVERSION_BADNESS
;
4316 else if (TYPE_LENGTH (arg
) < TYPE_LENGTH (parm
))
4317 return INTEGER_PROMOTION_BADNESS
;
4319 return INTEGER_CONVERSION_BADNESS
;
4320 case TYPE_CODE_ENUM
:
4321 case TYPE_CODE_FLAGS
:
4322 case TYPE_CODE_CHAR
:
4323 case TYPE_CODE_RANGE
:
4324 case TYPE_CODE_BOOL
:
4325 if (TYPE_DECLARED_CLASS (arg
))
4326 return INCOMPATIBLE_TYPE_BADNESS
;
4327 return INTEGER_PROMOTION_BADNESS
;
4329 return INT_FLOAT_CONVERSION_BADNESS
;
4331 return NS_POINTER_CONVERSION_BADNESS
;
4333 return INCOMPATIBLE_TYPE_BADNESS
;
4337 /* rank_one_type helper for when PARM's type code is TYPE_CODE_ENUM. */
4340 rank_one_type_parm_enum (struct type
*parm
, struct type
*arg
, struct value
*value
)
4342 switch (TYPE_CODE (arg
))
4345 case TYPE_CODE_CHAR
:
4346 case TYPE_CODE_RANGE
:
4347 case TYPE_CODE_BOOL
:
4348 case TYPE_CODE_ENUM
:
4349 if (TYPE_DECLARED_CLASS (parm
) || TYPE_DECLARED_CLASS (arg
))
4350 return INCOMPATIBLE_TYPE_BADNESS
;
4351 return INTEGER_CONVERSION_BADNESS
;
4353 return INT_FLOAT_CONVERSION_BADNESS
;
4355 return INCOMPATIBLE_TYPE_BADNESS
;
4359 /* rank_one_type helper for when PARM's type code is TYPE_CODE_CHAR. */
4362 rank_one_type_parm_char (struct type
*parm
, struct type
*arg
, struct value
*value
)
4364 switch (TYPE_CODE (arg
))
4366 case TYPE_CODE_RANGE
:
4367 case TYPE_CODE_BOOL
:
4368 case TYPE_CODE_ENUM
:
4369 if (TYPE_DECLARED_CLASS (arg
))
4370 return INCOMPATIBLE_TYPE_BADNESS
;
4371 return INTEGER_CONVERSION_BADNESS
;
4373 return INT_FLOAT_CONVERSION_BADNESS
;
4375 if (TYPE_LENGTH (arg
) > TYPE_LENGTH (parm
))
4376 return INTEGER_CONVERSION_BADNESS
;
4377 else if (TYPE_LENGTH (arg
) < TYPE_LENGTH (parm
))
4378 return INTEGER_PROMOTION_BADNESS
;
4380 case TYPE_CODE_CHAR
:
4381 /* Deal with signed, unsigned, and plain chars for C++ and
4382 with int cases falling through from previous case. */
4383 if (TYPE_NOSIGN (parm
))
4385 if (TYPE_NOSIGN (arg
))
4386 return EXACT_MATCH_BADNESS
;
4388 return INTEGER_CONVERSION_BADNESS
;
4390 else if (TYPE_UNSIGNED (parm
))
4392 if (TYPE_UNSIGNED (arg
))
4393 return EXACT_MATCH_BADNESS
;
4395 return INTEGER_PROMOTION_BADNESS
;
4397 else if (!TYPE_NOSIGN (arg
) && !TYPE_UNSIGNED (arg
))
4398 return EXACT_MATCH_BADNESS
;
4400 return INTEGER_CONVERSION_BADNESS
;
4402 return INCOMPATIBLE_TYPE_BADNESS
;
4406 /* rank_one_type helper for when PARM's type code is TYPE_CODE_RANGE. */
4409 rank_one_type_parm_range (struct type
*parm
, struct type
*arg
, struct value
*value
)
4411 switch (TYPE_CODE (arg
))
4414 case TYPE_CODE_CHAR
:
4415 case TYPE_CODE_RANGE
:
4416 case TYPE_CODE_BOOL
:
4417 case TYPE_CODE_ENUM
:
4418 return INTEGER_CONVERSION_BADNESS
;
4420 return INT_FLOAT_CONVERSION_BADNESS
;
4422 return INCOMPATIBLE_TYPE_BADNESS
;
4426 /* rank_one_type helper for when PARM's type code is TYPE_CODE_BOOL. */
4429 rank_one_type_parm_bool (struct type
*parm
, struct type
*arg
, struct value
*value
)
4431 switch (TYPE_CODE (arg
))
4433 /* n3290 draft, section 4.12.1 (conv.bool):
4435 "A prvalue of arithmetic, unscoped enumeration, pointer, or
4436 pointer to member type can be converted to a prvalue of type
4437 bool. A zero value, null pointer value, or null member pointer
4438 value is converted to false; any other value is converted to
4439 true. A prvalue of type std::nullptr_t can be converted to a
4440 prvalue of type bool; the resulting value is false." */
4442 case TYPE_CODE_CHAR
:
4443 case TYPE_CODE_ENUM
:
4445 case TYPE_CODE_MEMBERPTR
:
4447 return BOOL_CONVERSION_BADNESS
;
4448 case TYPE_CODE_RANGE
:
4449 return INCOMPATIBLE_TYPE_BADNESS
;
4450 case TYPE_CODE_BOOL
:
4451 return EXACT_MATCH_BADNESS
;
4453 return INCOMPATIBLE_TYPE_BADNESS
;
4457 /* rank_one_type helper for when PARM's type code is TYPE_CODE_FLOAT. */
4460 rank_one_type_parm_float (struct type
*parm
, struct type
*arg
, struct value
*value
)
4462 switch (TYPE_CODE (arg
))
4465 if (TYPE_LENGTH (arg
) < TYPE_LENGTH (parm
))
4466 return FLOAT_PROMOTION_BADNESS
;
4467 else if (TYPE_LENGTH (arg
) == TYPE_LENGTH (parm
))
4468 return EXACT_MATCH_BADNESS
;
4470 return FLOAT_CONVERSION_BADNESS
;
4472 case TYPE_CODE_BOOL
:
4473 case TYPE_CODE_ENUM
:
4474 case TYPE_CODE_RANGE
:
4475 case TYPE_CODE_CHAR
:
4476 return INT_FLOAT_CONVERSION_BADNESS
;
4478 return INCOMPATIBLE_TYPE_BADNESS
;
4482 /* rank_one_type helper for when PARM's type code is TYPE_CODE_COMPLEX. */
4485 rank_one_type_parm_complex (struct type
*parm
, struct type
*arg
, struct value
*value
)
4487 switch (TYPE_CODE (arg
))
4488 { /* Strictly not needed for C++, but... */
4490 return FLOAT_PROMOTION_BADNESS
;
4491 case TYPE_CODE_COMPLEX
:
4492 return EXACT_MATCH_BADNESS
;
4494 return INCOMPATIBLE_TYPE_BADNESS
;
4498 /* rank_one_type helper for when PARM's type code is TYPE_CODE_STRUCT. */
4501 rank_one_type_parm_struct (struct type
*parm
, struct type
*arg
, struct value
*value
)
4503 struct rank rank
= {0, 0};
4505 switch (TYPE_CODE (arg
))
4507 case TYPE_CODE_STRUCT
:
4508 /* Check for derivation */
4509 rank
.subrank
= distance_to_ancestor (parm
, arg
, 0);
4510 if (rank
.subrank
>= 0)
4511 return sum_ranks (BASE_CONVERSION_BADNESS
, rank
);
4514 return INCOMPATIBLE_TYPE_BADNESS
;
4518 /* rank_one_type helper for when PARM's type code is TYPE_CODE_SET. */
4521 rank_one_type_parm_set (struct type
*parm
, struct type
*arg
, struct value
*value
)
4523 switch (TYPE_CODE (arg
))
4527 return rank_one_type (TYPE_FIELD_TYPE (parm
, 0),
4528 TYPE_FIELD_TYPE (arg
, 0), NULL
);
4530 return INCOMPATIBLE_TYPE_BADNESS
;
4534 /* Compare one type (PARM) for compatibility with another (ARG).
4535 * PARM is intended to be the parameter type of a function; and
4536 * ARG is the supplied argument's type. This function tests if
4537 * the latter can be converted to the former.
4538 * VALUE is the argument's value or NULL if none (or called recursively)
4540 * Return 0 if they are identical types;
4541 * Otherwise, return an integer which corresponds to how compatible
4542 * PARM is to ARG. The higher the return value, the worse the match.
4543 * Generally the "bad" conversions are all uniformly assigned a 100. */
4546 rank_one_type (struct type
*parm
, struct type
*arg
, struct value
*value
)
4548 struct rank rank
= {0,0};
4550 /* Resolve typedefs */
4551 if (TYPE_CODE (parm
) == TYPE_CODE_TYPEDEF
)
4552 parm
= check_typedef (parm
);
4553 if (TYPE_CODE (arg
) == TYPE_CODE_TYPEDEF
)
4554 arg
= check_typedef (arg
);
4556 if (TYPE_IS_REFERENCE (parm
) && value
!= NULL
)
4558 if (VALUE_LVAL (value
) == not_lval
)
4560 /* Rvalues should preferably bind to rvalue references or const
4561 lvalue references. */
4562 if (TYPE_CODE (parm
) == TYPE_CODE_RVALUE_REF
)
4563 rank
.subrank
= REFERENCE_CONVERSION_RVALUE
;
4564 else if (TYPE_CONST (TYPE_TARGET_TYPE (parm
)))
4565 rank
.subrank
= REFERENCE_CONVERSION_CONST_LVALUE
;
4567 return INCOMPATIBLE_TYPE_BADNESS
;
4568 return sum_ranks (rank
, REFERENCE_CONVERSION_BADNESS
);
4572 /* It's illegal to pass an lvalue as an rvalue. */
4573 if (TYPE_CODE (parm
) == TYPE_CODE_RVALUE_REF
)
4574 return INCOMPATIBLE_TYPE_BADNESS
;
4578 if (types_equal (parm
, arg
))
4580 struct type
*t1
= parm
;
4581 struct type
*t2
= arg
;
4583 /* For pointers and references, compare target type. */
4584 if (TYPE_CODE (parm
) == TYPE_CODE_PTR
|| TYPE_IS_REFERENCE (parm
))
4586 t1
= TYPE_TARGET_TYPE (parm
);
4587 t2
= TYPE_TARGET_TYPE (arg
);
4590 /* Make sure they are CV equal, too. */
4591 if (TYPE_CONST (t1
) != TYPE_CONST (t2
))
4592 rank
.subrank
|= CV_CONVERSION_CONST
;
4593 if (TYPE_VOLATILE (t1
) != TYPE_VOLATILE (t2
))
4594 rank
.subrank
|= CV_CONVERSION_VOLATILE
;
4595 if (rank
.subrank
!= 0)
4596 return sum_ranks (CV_CONVERSION_BADNESS
, rank
);
4597 return EXACT_MATCH_BADNESS
;
4600 /* See through references, since we can almost make non-references
4603 if (TYPE_IS_REFERENCE (arg
))
4604 return (sum_ranks (rank_one_type (parm
, TYPE_TARGET_TYPE (arg
), NULL
),
4605 REFERENCE_SEE_THROUGH_BADNESS
));
4606 if (TYPE_IS_REFERENCE (parm
))
4607 return (sum_ranks (rank_one_type (TYPE_TARGET_TYPE (parm
), arg
, NULL
),
4608 REFERENCE_SEE_THROUGH_BADNESS
));
4610 /* Debugging only. */
4611 fprintf_filtered (gdb_stderr
,
4612 "------ Arg is %s [%d], parm is %s [%d]\n",
4613 TYPE_NAME (arg
), TYPE_CODE (arg
),
4614 TYPE_NAME (parm
), TYPE_CODE (parm
));
4616 /* x -> y means arg of type x being supplied for parameter of type y. */
4618 switch (TYPE_CODE (parm
))
4621 return rank_one_type_parm_ptr (parm
, arg
, value
);
4622 case TYPE_CODE_ARRAY
:
4623 return rank_one_type_parm_array (parm
, arg
, value
);
4624 case TYPE_CODE_FUNC
:
4625 return rank_one_type_parm_func (parm
, arg
, value
);
4627 return rank_one_type_parm_int (parm
, arg
, value
);
4628 case TYPE_CODE_ENUM
:
4629 return rank_one_type_parm_enum (parm
, arg
, value
);
4630 case TYPE_CODE_CHAR
:
4631 return rank_one_type_parm_char (parm
, arg
, value
);
4632 case TYPE_CODE_RANGE
:
4633 return rank_one_type_parm_range (parm
, arg
, value
);
4634 case TYPE_CODE_BOOL
:
4635 return rank_one_type_parm_bool (parm
, arg
, value
);
4637 return rank_one_type_parm_float (parm
, arg
, value
);
4638 case TYPE_CODE_COMPLEX
:
4639 return rank_one_type_parm_complex (parm
, arg
, value
);
4640 case TYPE_CODE_STRUCT
:
4641 return rank_one_type_parm_struct (parm
, arg
, value
);
4643 return rank_one_type_parm_set (parm
, arg
, value
);
4645 return INCOMPATIBLE_TYPE_BADNESS
;
4646 } /* switch (TYPE_CODE (arg)) */
4649 /* End of functions for overload resolution. */
4651 /* Routines to pretty-print types. */
4654 print_bit_vector (B_TYPE
*bits
, int nbits
)
4658 for (bitno
= 0; bitno
< nbits
; bitno
++)
4660 if ((bitno
% 8) == 0)
4662 puts_filtered (" ");
4664 if (B_TST (bits
, bitno
))
4665 printf_filtered (("1"));
4667 printf_filtered (("0"));
4671 /* Note the first arg should be the "this" pointer, we may not want to
4672 include it since we may get into a infinitely recursive
4676 print_args (struct field
*args
, int nargs
, int spaces
)
4682 for (i
= 0; i
< nargs
; i
++)
4684 printfi_filtered (spaces
, "[%d] name '%s'\n", i
,
4685 args
[i
].name
!= NULL
? args
[i
].name
: "<NULL>");
4686 recursive_dump_type (args
[i
].type
, spaces
+ 2);
4692 field_is_static (struct field
*f
)
4694 /* "static" fields are the fields whose location is not relative
4695 to the address of the enclosing struct. It would be nice to
4696 have a dedicated flag that would be set for static fields when
4697 the type is being created. But in practice, checking the field
4698 loc_kind should give us an accurate answer. */
4699 return (FIELD_LOC_KIND (*f
) == FIELD_LOC_KIND_PHYSNAME
4700 || FIELD_LOC_KIND (*f
) == FIELD_LOC_KIND_PHYSADDR
);
4704 dump_fn_fieldlists (struct type
*type
, int spaces
)
4710 printfi_filtered (spaces
, "fn_fieldlists ");
4711 gdb_print_host_address (TYPE_FN_FIELDLISTS (type
), gdb_stdout
);
4712 printf_filtered ("\n");
4713 for (method_idx
= 0; method_idx
< TYPE_NFN_FIELDS (type
); method_idx
++)
4715 f
= TYPE_FN_FIELDLIST1 (type
, method_idx
);
4716 printfi_filtered (spaces
+ 2, "[%d] name '%s' (",
4718 TYPE_FN_FIELDLIST_NAME (type
, method_idx
));
4719 gdb_print_host_address (TYPE_FN_FIELDLIST_NAME (type
, method_idx
),
4721 printf_filtered (_(") length %d\n"),
4722 TYPE_FN_FIELDLIST_LENGTH (type
, method_idx
));
4723 for (overload_idx
= 0;
4724 overload_idx
< TYPE_FN_FIELDLIST_LENGTH (type
, method_idx
);
4727 printfi_filtered (spaces
+ 4, "[%d] physname '%s' (",
4729 TYPE_FN_FIELD_PHYSNAME (f
, overload_idx
));
4730 gdb_print_host_address (TYPE_FN_FIELD_PHYSNAME (f
, overload_idx
),
4732 printf_filtered (")\n");
4733 printfi_filtered (spaces
+ 8, "type ");
4734 gdb_print_host_address (TYPE_FN_FIELD_TYPE (f
, overload_idx
),
4736 printf_filtered ("\n");
4738 recursive_dump_type (TYPE_FN_FIELD_TYPE (f
, overload_idx
),
4741 printfi_filtered (spaces
+ 8, "args ");
4742 gdb_print_host_address (TYPE_FN_FIELD_ARGS (f
, overload_idx
),
4744 printf_filtered ("\n");
4745 print_args (TYPE_FN_FIELD_ARGS (f
, overload_idx
),
4746 TYPE_NFIELDS (TYPE_FN_FIELD_TYPE (f
, overload_idx
)),
4748 printfi_filtered (spaces
+ 8, "fcontext ");
4749 gdb_print_host_address (TYPE_FN_FIELD_FCONTEXT (f
, overload_idx
),
4751 printf_filtered ("\n");
4753 printfi_filtered (spaces
+ 8, "is_const %d\n",
4754 TYPE_FN_FIELD_CONST (f
, overload_idx
));
4755 printfi_filtered (spaces
+ 8, "is_volatile %d\n",
4756 TYPE_FN_FIELD_VOLATILE (f
, overload_idx
));
4757 printfi_filtered (spaces
+ 8, "is_private %d\n",
4758 TYPE_FN_FIELD_PRIVATE (f
, overload_idx
));
4759 printfi_filtered (spaces
+ 8, "is_protected %d\n",
4760 TYPE_FN_FIELD_PROTECTED (f
, overload_idx
));
4761 printfi_filtered (spaces
+ 8, "is_stub %d\n",
4762 TYPE_FN_FIELD_STUB (f
, overload_idx
));
4763 printfi_filtered (spaces
+ 8, "defaulted %d\n",
4764 TYPE_FN_FIELD_DEFAULTED (f
, overload_idx
));
4765 printfi_filtered (spaces
+ 8, "is_deleted %d\n",
4766 TYPE_FN_FIELD_DELETED (f
, overload_idx
));
4767 printfi_filtered (spaces
+ 8, "voffset %u\n",
4768 TYPE_FN_FIELD_VOFFSET (f
, overload_idx
));
4774 print_cplus_stuff (struct type
*type
, int spaces
)
4776 printfi_filtered (spaces
, "vptr_fieldno %d\n", TYPE_VPTR_FIELDNO (type
));
4777 printfi_filtered (spaces
, "vptr_basetype ");
4778 gdb_print_host_address (TYPE_VPTR_BASETYPE (type
), gdb_stdout
);
4779 puts_filtered ("\n");
4780 if (TYPE_VPTR_BASETYPE (type
) != NULL
)
4781 recursive_dump_type (TYPE_VPTR_BASETYPE (type
), spaces
+ 2);
4783 printfi_filtered (spaces
, "n_baseclasses %d\n",
4784 TYPE_N_BASECLASSES (type
));
4785 printfi_filtered (spaces
, "nfn_fields %d\n",
4786 TYPE_NFN_FIELDS (type
));
4787 if (TYPE_N_BASECLASSES (type
) > 0)
4789 printfi_filtered (spaces
, "virtual_field_bits (%d bits at *",
4790 TYPE_N_BASECLASSES (type
));
4791 gdb_print_host_address (TYPE_FIELD_VIRTUAL_BITS (type
),
4793 printf_filtered (")");
4795 print_bit_vector (TYPE_FIELD_VIRTUAL_BITS (type
),
4796 TYPE_N_BASECLASSES (type
));
4797 puts_filtered ("\n");
4799 if (TYPE_NFIELDS (type
) > 0)
4801 if (TYPE_FIELD_PRIVATE_BITS (type
) != NULL
)
4803 printfi_filtered (spaces
,
4804 "private_field_bits (%d bits at *",
4805 TYPE_NFIELDS (type
));
4806 gdb_print_host_address (TYPE_FIELD_PRIVATE_BITS (type
),
4808 printf_filtered (")");
4809 print_bit_vector (TYPE_FIELD_PRIVATE_BITS (type
),
4810 TYPE_NFIELDS (type
));
4811 puts_filtered ("\n");
4813 if (TYPE_FIELD_PROTECTED_BITS (type
) != NULL
)
4815 printfi_filtered (spaces
,
4816 "protected_field_bits (%d bits at *",
4817 TYPE_NFIELDS (type
));
4818 gdb_print_host_address (TYPE_FIELD_PROTECTED_BITS (type
),
4820 printf_filtered (")");
4821 print_bit_vector (TYPE_FIELD_PROTECTED_BITS (type
),
4822 TYPE_NFIELDS (type
));
4823 puts_filtered ("\n");
4826 if (TYPE_NFN_FIELDS (type
) > 0)
4828 dump_fn_fieldlists (type
, spaces
);
4831 printfi_filtered (spaces
, "calling_convention %d\n",
4832 TYPE_CPLUS_CALLING_CONVENTION (type
));
4835 /* Print the contents of the TYPE's type_specific union, assuming that
4836 its type-specific kind is TYPE_SPECIFIC_GNAT_STUFF. */
4839 print_gnat_stuff (struct type
*type
, int spaces
)
4841 struct type
*descriptive_type
= TYPE_DESCRIPTIVE_TYPE (type
);
4843 if (descriptive_type
== NULL
)
4844 printfi_filtered (spaces
+ 2, "no descriptive type\n");
4847 printfi_filtered (spaces
+ 2, "descriptive type\n");
4848 recursive_dump_type (descriptive_type
, spaces
+ 4);
4852 static struct obstack dont_print_type_obstack
;
4855 recursive_dump_type (struct type
*type
, int spaces
)
4860 obstack_begin (&dont_print_type_obstack
, 0);
4862 if (TYPE_NFIELDS (type
) > 0
4863 || (HAVE_CPLUS_STRUCT (type
) && TYPE_NFN_FIELDS (type
) > 0))
4865 struct type
**first_dont_print
4866 = (struct type
**) obstack_base (&dont_print_type_obstack
);
4868 int i
= (struct type
**)
4869 obstack_next_free (&dont_print_type_obstack
) - first_dont_print
;
4873 if (type
== first_dont_print
[i
])
4875 printfi_filtered (spaces
, "type node ");
4876 gdb_print_host_address (type
, gdb_stdout
);
4877 printf_filtered (_(" <same as already seen type>\n"));
4882 obstack_ptr_grow (&dont_print_type_obstack
, type
);
4885 printfi_filtered (spaces
, "type node ");
4886 gdb_print_host_address (type
, gdb_stdout
);
4887 printf_filtered ("\n");
4888 printfi_filtered (spaces
, "name '%s' (",
4889 TYPE_NAME (type
) ? TYPE_NAME (type
) : "<NULL>");
4890 gdb_print_host_address (TYPE_NAME (type
), gdb_stdout
);
4891 printf_filtered (")\n");
4892 printfi_filtered (spaces
, "code 0x%x ", TYPE_CODE (type
));
4893 switch (TYPE_CODE (type
))
4895 case TYPE_CODE_UNDEF
:
4896 printf_filtered ("(TYPE_CODE_UNDEF)");
4899 printf_filtered ("(TYPE_CODE_PTR)");
4901 case TYPE_CODE_ARRAY
:
4902 printf_filtered ("(TYPE_CODE_ARRAY)");
4904 case TYPE_CODE_STRUCT
:
4905 printf_filtered ("(TYPE_CODE_STRUCT)");
4907 case TYPE_CODE_UNION
:
4908 printf_filtered ("(TYPE_CODE_UNION)");
4910 case TYPE_CODE_ENUM
:
4911 printf_filtered ("(TYPE_CODE_ENUM)");
4913 case TYPE_CODE_FLAGS
:
4914 printf_filtered ("(TYPE_CODE_FLAGS)");
4916 case TYPE_CODE_FUNC
:
4917 printf_filtered ("(TYPE_CODE_FUNC)");
4920 printf_filtered ("(TYPE_CODE_INT)");
4923 printf_filtered ("(TYPE_CODE_FLT)");
4925 case TYPE_CODE_VOID
:
4926 printf_filtered ("(TYPE_CODE_VOID)");
4929 printf_filtered ("(TYPE_CODE_SET)");
4931 case TYPE_CODE_RANGE
:
4932 printf_filtered ("(TYPE_CODE_RANGE)");
4934 case TYPE_CODE_STRING
:
4935 printf_filtered ("(TYPE_CODE_STRING)");
4937 case TYPE_CODE_ERROR
:
4938 printf_filtered ("(TYPE_CODE_ERROR)");
4940 case TYPE_CODE_MEMBERPTR
:
4941 printf_filtered ("(TYPE_CODE_MEMBERPTR)");
4943 case TYPE_CODE_METHODPTR
:
4944 printf_filtered ("(TYPE_CODE_METHODPTR)");
4946 case TYPE_CODE_METHOD
:
4947 printf_filtered ("(TYPE_CODE_METHOD)");
4950 printf_filtered ("(TYPE_CODE_REF)");
4952 case TYPE_CODE_CHAR
:
4953 printf_filtered ("(TYPE_CODE_CHAR)");
4955 case TYPE_CODE_BOOL
:
4956 printf_filtered ("(TYPE_CODE_BOOL)");
4958 case TYPE_CODE_COMPLEX
:
4959 printf_filtered ("(TYPE_CODE_COMPLEX)");
4961 case TYPE_CODE_TYPEDEF
:
4962 printf_filtered ("(TYPE_CODE_TYPEDEF)");
4964 case TYPE_CODE_NAMESPACE
:
4965 printf_filtered ("(TYPE_CODE_NAMESPACE)");
4968 printf_filtered ("(UNKNOWN TYPE CODE)");
4971 puts_filtered ("\n");
4972 printfi_filtered (spaces
, "length %s\n", pulongest (TYPE_LENGTH (type
)));
4973 if (TYPE_OBJFILE_OWNED (type
))
4975 printfi_filtered (spaces
, "objfile ");
4976 gdb_print_host_address (TYPE_OWNER (type
).objfile
, gdb_stdout
);
4980 printfi_filtered (spaces
, "gdbarch ");
4981 gdb_print_host_address (TYPE_OWNER (type
).gdbarch
, gdb_stdout
);
4983 printf_filtered ("\n");
4984 printfi_filtered (spaces
, "target_type ");
4985 gdb_print_host_address (TYPE_TARGET_TYPE (type
), gdb_stdout
);
4986 printf_filtered ("\n");
4987 if (TYPE_TARGET_TYPE (type
) != NULL
)
4989 recursive_dump_type (TYPE_TARGET_TYPE (type
), spaces
+ 2);
4991 printfi_filtered (spaces
, "pointer_type ");
4992 gdb_print_host_address (TYPE_POINTER_TYPE (type
), gdb_stdout
);
4993 printf_filtered ("\n");
4994 printfi_filtered (spaces
, "reference_type ");
4995 gdb_print_host_address (TYPE_REFERENCE_TYPE (type
), gdb_stdout
);
4996 printf_filtered ("\n");
4997 printfi_filtered (spaces
, "type_chain ");
4998 gdb_print_host_address (TYPE_CHAIN (type
), gdb_stdout
);
4999 printf_filtered ("\n");
5000 printfi_filtered (spaces
, "instance_flags 0x%x",
5001 TYPE_INSTANCE_FLAGS (type
));
5002 if (TYPE_CONST (type
))
5004 puts_filtered (" TYPE_CONST");
5006 if (TYPE_VOLATILE (type
))
5008 puts_filtered (" TYPE_VOLATILE");
5010 if (TYPE_CODE_SPACE (type
))
5012 puts_filtered (" TYPE_CODE_SPACE");
5014 if (TYPE_DATA_SPACE (type
))
5016 puts_filtered (" TYPE_DATA_SPACE");
5018 if (TYPE_ADDRESS_CLASS_1 (type
))
5020 puts_filtered (" TYPE_ADDRESS_CLASS_1");
5022 if (TYPE_ADDRESS_CLASS_2 (type
))
5024 puts_filtered (" TYPE_ADDRESS_CLASS_2");
5026 if (TYPE_RESTRICT (type
))
5028 puts_filtered (" TYPE_RESTRICT");
5030 if (TYPE_ATOMIC (type
))
5032 puts_filtered (" TYPE_ATOMIC");
5034 puts_filtered ("\n");
5036 printfi_filtered (spaces
, "flags");
5037 if (TYPE_UNSIGNED (type
))
5039 puts_filtered (" TYPE_UNSIGNED");
5041 if (TYPE_NOSIGN (type
))
5043 puts_filtered (" TYPE_NOSIGN");
5045 if (TYPE_ENDIANITY_NOT_DEFAULT (type
))
5047 puts_filtered (" TYPE_ENDIANITY_NOT_DEFAULT");
5049 if (TYPE_STUB (type
))
5051 puts_filtered (" TYPE_STUB");
5053 if (TYPE_TARGET_STUB (type
))
5055 puts_filtered (" TYPE_TARGET_STUB");
5057 if (TYPE_PROTOTYPED (type
))
5059 puts_filtered (" TYPE_PROTOTYPED");
5061 if (TYPE_INCOMPLETE (type
))
5063 puts_filtered (" TYPE_INCOMPLETE");
5065 if (TYPE_VARARGS (type
))
5067 puts_filtered (" TYPE_VARARGS");
5069 /* This is used for things like AltiVec registers on ppc. Gcc emits
5070 an attribute for the array type, which tells whether or not we
5071 have a vector, instead of a regular array. */
5072 if (TYPE_VECTOR (type
))
5074 puts_filtered (" TYPE_VECTOR");
5076 if (TYPE_FIXED_INSTANCE (type
))
5078 puts_filtered (" TYPE_FIXED_INSTANCE");
5080 if (TYPE_STUB_SUPPORTED (type
))
5082 puts_filtered (" TYPE_STUB_SUPPORTED");
5084 if (TYPE_NOTTEXT (type
))
5086 puts_filtered (" TYPE_NOTTEXT");
5088 puts_filtered ("\n");
5089 printfi_filtered (spaces
, "nfields %d ", TYPE_NFIELDS (type
));
5090 gdb_print_host_address (TYPE_FIELDS (type
), gdb_stdout
);
5091 puts_filtered ("\n");
5092 for (idx
= 0; idx
< TYPE_NFIELDS (type
); idx
++)
5094 if (TYPE_CODE (type
) == TYPE_CODE_ENUM
)
5095 printfi_filtered (spaces
+ 2,
5096 "[%d] enumval %s type ",
5097 idx
, plongest (TYPE_FIELD_ENUMVAL (type
, idx
)));
5099 printfi_filtered (spaces
+ 2,
5100 "[%d] bitpos %s bitsize %d type ",
5101 idx
, plongest (TYPE_FIELD_BITPOS (type
, idx
)),
5102 TYPE_FIELD_BITSIZE (type
, idx
));
5103 gdb_print_host_address (TYPE_FIELD_TYPE (type
, idx
), gdb_stdout
);
5104 printf_filtered (" name '%s' (",
5105 TYPE_FIELD_NAME (type
, idx
) != NULL
5106 ? TYPE_FIELD_NAME (type
, idx
)
5108 gdb_print_host_address (TYPE_FIELD_NAME (type
, idx
), gdb_stdout
);
5109 printf_filtered (")\n");
5110 if (TYPE_FIELD_TYPE (type
, idx
) != NULL
)
5112 recursive_dump_type (TYPE_FIELD_TYPE (type
, idx
), spaces
+ 4);
5115 if (TYPE_CODE (type
) == TYPE_CODE_RANGE
)
5117 printfi_filtered (spaces
, "low %s%s high %s%s\n",
5118 plongest (TYPE_LOW_BOUND (type
)),
5119 TYPE_LOW_BOUND_UNDEFINED (type
) ? " (undefined)" : "",
5120 plongest (TYPE_HIGH_BOUND (type
)),
5121 TYPE_HIGH_BOUND_UNDEFINED (type
)
5122 ? " (undefined)" : "");
5125 switch (TYPE_SPECIFIC_FIELD (type
))
5127 case TYPE_SPECIFIC_CPLUS_STUFF
:
5128 printfi_filtered (spaces
, "cplus_stuff ");
5129 gdb_print_host_address (TYPE_CPLUS_SPECIFIC (type
),
5131 puts_filtered ("\n");
5132 print_cplus_stuff (type
, spaces
);
5135 case TYPE_SPECIFIC_GNAT_STUFF
:
5136 printfi_filtered (spaces
, "gnat_stuff ");
5137 gdb_print_host_address (TYPE_GNAT_SPECIFIC (type
), gdb_stdout
);
5138 puts_filtered ("\n");
5139 print_gnat_stuff (type
, spaces
);
5142 case TYPE_SPECIFIC_FLOATFORMAT
:
5143 printfi_filtered (spaces
, "floatformat ");
5144 if (TYPE_FLOATFORMAT (type
) == NULL
5145 || TYPE_FLOATFORMAT (type
)->name
== NULL
)
5146 puts_filtered ("(null)");
5148 puts_filtered (TYPE_FLOATFORMAT (type
)->name
);
5149 puts_filtered ("\n");
5152 case TYPE_SPECIFIC_FUNC
:
5153 printfi_filtered (spaces
, "calling_convention %d\n",
5154 TYPE_CALLING_CONVENTION (type
));
5155 /* tail_call_list is not printed. */
5158 case TYPE_SPECIFIC_SELF_TYPE
:
5159 printfi_filtered (spaces
, "self_type ");
5160 gdb_print_host_address (TYPE_SELF_TYPE (type
), gdb_stdout
);
5161 puts_filtered ("\n");
5166 obstack_free (&dont_print_type_obstack
, NULL
);
5169 /* Trivial helpers for the libiberty hash table, for mapping one
5172 struct type_pair
: public allocate_on_obstack
5174 type_pair (struct type
*old_
, struct type
*newobj_
)
5175 : old (old_
), newobj (newobj_
)
5178 struct type
* const old
, * const newobj
;
5182 type_pair_hash (const void *item
)
5184 const struct type_pair
*pair
= (const struct type_pair
*) item
;
5186 return htab_hash_pointer (pair
->old
);
5190 type_pair_eq (const void *item_lhs
, const void *item_rhs
)
5192 const struct type_pair
*lhs
= (const struct type_pair
*) item_lhs
;
5193 const struct type_pair
*rhs
= (const struct type_pair
*) item_rhs
;
5195 return lhs
->old
== rhs
->old
;
5198 /* Allocate the hash table used by copy_type_recursive to walk
5199 types without duplicates. We use OBJFILE's obstack, because
5200 OBJFILE is about to be deleted. */
5203 create_copied_types_hash (struct objfile
*objfile
)
5205 return htab_create_alloc_ex (1, type_pair_hash
, type_pair_eq
,
5206 NULL
, &objfile
->objfile_obstack
,
5207 hashtab_obstack_allocate
,
5208 dummy_obstack_deallocate
);
5211 /* Recursively copy (deep copy) a dynamic attribute list of a type. */
5213 static struct dynamic_prop_list
*
5214 copy_dynamic_prop_list (struct obstack
*objfile_obstack
,
5215 struct dynamic_prop_list
*list
)
5217 struct dynamic_prop_list
*copy
= list
;
5218 struct dynamic_prop_list
**node_ptr
= ©
;
5220 while (*node_ptr
!= NULL
)
5222 struct dynamic_prop_list
*node_copy
;
5224 node_copy
= ((struct dynamic_prop_list
*)
5225 obstack_copy (objfile_obstack
, *node_ptr
,
5226 sizeof (struct dynamic_prop_list
)));
5227 node_copy
->prop
= (*node_ptr
)->prop
;
5228 *node_ptr
= node_copy
;
5230 node_ptr
= &node_copy
->next
;
5236 /* Recursively copy (deep copy) TYPE, if it is associated with
5237 OBJFILE. Return a new type owned by the gdbarch associated with the type, a
5238 saved type if we have already visited TYPE (using COPIED_TYPES), or TYPE if
5239 it is not associated with OBJFILE. */
5242 copy_type_recursive (struct objfile
*objfile
,
5244 htab_t copied_types
)
5247 struct type
*new_type
;
5249 if (! TYPE_OBJFILE_OWNED (type
))
5252 /* This type shouldn't be pointing to any types in other objfiles;
5253 if it did, the type might disappear unexpectedly. */
5254 gdb_assert (TYPE_OBJFILE (type
) == objfile
);
5256 struct type_pair
pair (type
, nullptr);
5258 slot
= htab_find_slot (copied_types
, &pair
, INSERT
);
5260 return ((struct type_pair
*) *slot
)->newobj
;
5262 new_type
= alloc_type_arch (get_type_arch (type
));
5264 /* We must add the new type to the hash table immediately, in case
5265 we encounter this type again during a recursive call below. */
5266 struct type_pair
*stored
5267 = new (&objfile
->objfile_obstack
) struct type_pair (type
, new_type
);
5271 /* Copy the common fields of types. For the main type, we simply
5272 copy the entire thing and then update specific fields as needed. */
5273 *TYPE_MAIN_TYPE (new_type
) = *TYPE_MAIN_TYPE (type
);
5274 TYPE_OBJFILE_OWNED (new_type
) = 0;
5275 TYPE_OWNER (new_type
).gdbarch
= get_type_arch (type
);
5277 if (TYPE_NAME (type
))
5278 TYPE_NAME (new_type
) = xstrdup (TYPE_NAME (type
));
5280 TYPE_INSTANCE_FLAGS (new_type
) = TYPE_INSTANCE_FLAGS (type
);
5281 TYPE_LENGTH (new_type
) = TYPE_LENGTH (type
);
5283 /* Copy the fields. */
5284 if (TYPE_NFIELDS (type
))
5288 nfields
= TYPE_NFIELDS (type
);
5289 TYPE_FIELDS (new_type
) = (struct field
*)
5290 TYPE_ZALLOC (new_type
, nfields
* sizeof (struct field
));
5291 for (i
= 0; i
< nfields
; i
++)
5293 TYPE_FIELD_ARTIFICIAL (new_type
, i
) =
5294 TYPE_FIELD_ARTIFICIAL (type
, i
);
5295 TYPE_FIELD_BITSIZE (new_type
, i
) = TYPE_FIELD_BITSIZE (type
, i
);
5296 if (TYPE_FIELD_TYPE (type
, i
))
5297 TYPE_FIELD_TYPE (new_type
, i
)
5298 = copy_type_recursive (objfile
, TYPE_FIELD_TYPE (type
, i
),
5300 if (TYPE_FIELD_NAME (type
, i
))
5301 TYPE_FIELD_NAME (new_type
, i
) =
5302 xstrdup (TYPE_FIELD_NAME (type
, i
));
5303 switch (TYPE_FIELD_LOC_KIND (type
, i
))
5305 case FIELD_LOC_KIND_BITPOS
:
5306 SET_FIELD_BITPOS (TYPE_FIELD (new_type
, i
),
5307 TYPE_FIELD_BITPOS (type
, i
));
5309 case FIELD_LOC_KIND_ENUMVAL
:
5310 SET_FIELD_ENUMVAL (TYPE_FIELD (new_type
, i
),
5311 TYPE_FIELD_ENUMVAL (type
, i
));
5313 case FIELD_LOC_KIND_PHYSADDR
:
5314 SET_FIELD_PHYSADDR (TYPE_FIELD (new_type
, i
),
5315 TYPE_FIELD_STATIC_PHYSADDR (type
, i
));
5317 case FIELD_LOC_KIND_PHYSNAME
:
5318 SET_FIELD_PHYSNAME (TYPE_FIELD (new_type
, i
),
5319 xstrdup (TYPE_FIELD_STATIC_PHYSNAME (type
,
5323 internal_error (__FILE__
, __LINE__
,
5324 _("Unexpected type field location kind: %d"),
5325 TYPE_FIELD_LOC_KIND (type
, i
));
5330 /* For range types, copy the bounds information. */
5331 if (TYPE_CODE (type
) == TYPE_CODE_RANGE
)
5333 TYPE_RANGE_DATA (new_type
) = (struct range_bounds
*)
5334 TYPE_ALLOC (new_type
, sizeof (struct range_bounds
));
5335 *TYPE_RANGE_DATA (new_type
) = *TYPE_RANGE_DATA (type
);
5338 if (TYPE_DYN_PROP_LIST (type
) != NULL
)
5339 TYPE_DYN_PROP_LIST (new_type
)
5340 = copy_dynamic_prop_list (&objfile
->objfile_obstack
,
5341 TYPE_DYN_PROP_LIST (type
));
5344 /* Copy pointers to other types. */
5345 if (TYPE_TARGET_TYPE (type
))
5346 TYPE_TARGET_TYPE (new_type
) =
5347 copy_type_recursive (objfile
,
5348 TYPE_TARGET_TYPE (type
),
5351 /* Maybe copy the type_specific bits.
5353 NOTE drow/2005-12-09: We do not copy the C++-specific bits like
5354 base classes and methods. There's no fundamental reason why we
5355 can't, but at the moment it is not needed. */
5357 switch (TYPE_SPECIFIC_FIELD (type
))
5359 case TYPE_SPECIFIC_NONE
:
5361 case TYPE_SPECIFIC_FUNC
:
5362 INIT_FUNC_SPECIFIC (new_type
);
5363 TYPE_CALLING_CONVENTION (new_type
) = TYPE_CALLING_CONVENTION (type
);
5364 TYPE_NO_RETURN (new_type
) = TYPE_NO_RETURN (type
);
5365 TYPE_TAIL_CALL_LIST (new_type
) = NULL
;
5367 case TYPE_SPECIFIC_FLOATFORMAT
:
5368 TYPE_FLOATFORMAT (new_type
) = TYPE_FLOATFORMAT (type
);
5370 case TYPE_SPECIFIC_CPLUS_STUFF
:
5371 INIT_CPLUS_SPECIFIC (new_type
);
5373 case TYPE_SPECIFIC_GNAT_STUFF
:
5374 INIT_GNAT_SPECIFIC (new_type
);
5376 case TYPE_SPECIFIC_SELF_TYPE
:
5377 set_type_self_type (new_type
,
5378 copy_type_recursive (objfile
, TYPE_SELF_TYPE (type
),
5382 gdb_assert_not_reached ("bad type_specific_kind");
5388 /* Make a copy of the given TYPE, except that the pointer & reference
5389 types are not preserved.
5391 This function assumes that the given type has an associated objfile.
5392 This objfile is used to allocate the new type. */
5395 copy_type (const struct type
*type
)
5397 struct type
*new_type
;
5399 gdb_assert (TYPE_OBJFILE_OWNED (type
));
5401 new_type
= alloc_type_copy (type
);
5402 TYPE_INSTANCE_FLAGS (new_type
) = TYPE_INSTANCE_FLAGS (type
);
5403 TYPE_LENGTH (new_type
) = TYPE_LENGTH (type
);
5404 memcpy (TYPE_MAIN_TYPE (new_type
), TYPE_MAIN_TYPE (type
),
5405 sizeof (struct main_type
));
5406 if (TYPE_DYN_PROP_LIST (type
) != NULL
)
5407 TYPE_DYN_PROP_LIST (new_type
)
5408 = copy_dynamic_prop_list (&TYPE_OBJFILE (type
) -> objfile_obstack
,
5409 TYPE_DYN_PROP_LIST (type
));
5414 /* Helper functions to initialize architecture-specific types. */
5416 /* Allocate a type structure associated with GDBARCH and set its
5417 CODE, LENGTH, and NAME fields. */
5420 arch_type (struct gdbarch
*gdbarch
,
5421 enum type_code code
, int bit
, const char *name
)
5425 type
= alloc_type_arch (gdbarch
);
5426 set_type_code (type
, code
);
5427 gdb_assert ((bit
% TARGET_CHAR_BIT
) == 0);
5428 TYPE_LENGTH (type
) = bit
/ TARGET_CHAR_BIT
;
5431 TYPE_NAME (type
) = gdbarch_obstack_strdup (gdbarch
, name
);
5436 /* Allocate a TYPE_CODE_INT type structure associated with GDBARCH.
5437 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
5438 the type's TYPE_UNSIGNED flag. NAME is the type name. */
5441 arch_integer_type (struct gdbarch
*gdbarch
,
5442 int bit
, int unsigned_p
, const char *name
)
5446 t
= arch_type (gdbarch
, TYPE_CODE_INT
, bit
, name
);
5448 TYPE_UNSIGNED (t
) = 1;
5453 /* Allocate a TYPE_CODE_CHAR type structure associated with GDBARCH.
5454 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
5455 the type's TYPE_UNSIGNED flag. NAME is the type name. */
5458 arch_character_type (struct gdbarch
*gdbarch
,
5459 int bit
, int unsigned_p
, const char *name
)
5463 t
= arch_type (gdbarch
, TYPE_CODE_CHAR
, bit
, name
);
5465 TYPE_UNSIGNED (t
) = 1;
5470 /* Allocate a TYPE_CODE_BOOL type structure associated with GDBARCH.
5471 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
5472 the type's TYPE_UNSIGNED flag. NAME is the type name. */
5475 arch_boolean_type (struct gdbarch
*gdbarch
,
5476 int bit
, int unsigned_p
, const char *name
)
5480 t
= arch_type (gdbarch
, TYPE_CODE_BOOL
, bit
, name
);
5482 TYPE_UNSIGNED (t
) = 1;
5487 /* Allocate a TYPE_CODE_FLT type structure associated with GDBARCH.
5488 BIT is the type size in bits; if BIT equals -1, the size is
5489 determined by the floatformat. NAME is the type name. Set the
5490 TYPE_FLOATFORMAT from FLOATFORMATS. */
5493 arch_float_type (struct gdbarch
*gdbarch
,
5494 int bit
, const char *name
,
5495 const struct floatformat
**floatformats
)
5497 const struct floatformat
*fmt
= floatformats
[gdbarch_byte_order (gdbarch
)];
5500 bit
= verify_floatformat (bit
, fmt
);
5501 t
= arch_type (gdbarch
, TYPE_CODE_FLT
, bit
, name
);
5502 TYPE_FLOATFORMAT (t
) = fmt
;
5507 /* Allocate a TYPE_CODE_DECFLOAT type structure associated with GDBARCH.
5508 BIT is the type size in bits. NAME is the type name. */
5511 arch_decfloat_type (struct gdbarch
*gdbarch
, int bit
, const char *name
)
5515 t
= arch_type (gdbarch
, TYPE_CODE_DECFLOAT
, bit
, name
);
5519 /* Allocate a TYPE_CODE_PTR type structure associated with GDBARCH.
5520 BIT is the pointer type size in bits. NAME is the type name.
5521 TARGET_TYPE is the pointer target type. Always sets the pointer type's
5522 TYPE_UNSIGNED flag. */
5525 arch_pointer_type (struct gdbarch
*gdbarch
,
5526 int bit
, const char *name
, struct type
*target_type
)
5530 t
= arch_type (gdbarch
, TYPE_CODE_PTR
, bit
, name
);
5531 TYPE_TARGET_TYPE (t
) = target_type
;
5532 TYPE_UNSIGNED (t
) = 1;
5536 /* Allocate a TYPE_CODE_FLAGS type structure associated with GDBARCH.
5537 NAME is the type name. BIT is the size of the flag word in bits. */
5540 arch_flags_type (struct gdbarch
*gdbarch
, const char *name
, int bit
)
5544 type
= arch_type (gdbarch
, TYPE_CODE_FLAGS
, bit
, name
);
5545 TYPE_UNSIGNED (type
) = 1;
5546 TYPE_NFIELDS (type
) = 0;
5547 /* Pre-allocate enough space assuming every field is one bit. */
5549 = (struct field
*) TYPE_ZALLOC (type
, bit
* sizeof (struct field
));
5554 /* Add field to TYPE_CODE_FLAGS type TYPE to indicate the bit at
5555 position BITPOS is called NAME. Pass NAME as "" for fields that
5556 should not be printed. */
5559 append_flags_type_field (struct type
*type
, int start_bitpos
, int nr_bits
,
5560 struct type
*field_type
, const char *name
)
5562 int type_bitsize
= TYPE_LENGTH (type
) * TARGET_CHAR_BIT
;
5563 int field_nr
= TYPE_NFIELDS (type
);
5565 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_FLAGS
);
5566 gdb_assert (TYPE_NFIELDS (type
) + 1 <= type_bitsize
);
5567 gdb_assert (start_bitpos
>= 0 && start_bitpos
< type_bitsize
);
5568 gdb_assert (nr_bits
>= 1 && nr_bits
<= type_bitsize
);
5569 gdb_assert (name
!= NULL
);
5571 TYPE_FIELD_NAME (type
, field_nr
) = xstrdup (name
);
5572 TYPE_FIELD_TYPE (type
, field_nr
) = field_type
;
5573 SET_FIELD_BITPOS (TYPE_FIELD (type
, field_nr
), start_bitpos
);
5574 TYPE_FIELD_BITSIZE (type
, field_nr
) = nr_bits
;
5575 ++TYPE_NFIELDS (type
);
5578 /* Special version of append_flags_type_field to add a flag field.
5579 Add field to TYPE_CODE_FLAGS type TYPE to indicate the bit at
5580 position BITPOS is called NAME. */
5583 append_flags_type_flag (struct type
*type
, int bitpos
, const char *name
)
5585 struct gdbarch
*gdbarch
= get_type_arch (type
);
5587 append_flags_type_field (type
, bitpos
, 1,
5588 builtin_type (gdbarch
)->builtin_bool
,
5592 /* Allocate a TYPE_CODE_STRUCT or TYPE_CODE_UNION type structure (as
5593 specified by CODE) associated with GDBARCH. NAME is the type name. */
5596 arch_composite_type (struct gdbarch
*gdbarch
, const char *name
,
5597 enum type_code code
)
5601 gdb_assert (code
== TYPE_CODE_STRUCT
|| code
== TYPE_CODE_UNION
);
5602 t
= arch_type (gdbarch
, code
, 0, NULL
);
5603 TYPE_NAME (t
) = name
;
5604 INIT_CPLUS_SPECIFIC (t
);
5608 /* Add new field with name NAME and type FIELD to composite type T.
5609 Do not set the field's position or adjust the type's length;
5610 the caller should do so. Return the new field. */
5613 append_composite_type_field_raw (struct type
*t
, const char *name
,
5618 TYPE_NFIELDS (t
) = TYPE_NFIELDS (t
) + 1;
5619 TYPE_FIELDS (t
) = XRESIZEVEC (struct field
, TYPE_FIELDS (t
),
5621 f
= &(TYPE_FIELDS (t
)[TYPE_NFIELDS (t
) - 1]);
5622 memset (f
, 0, sizeof f
[0]);
5623 FIELD_TYPE (f
[0]) = field
;
5624 FIELD_NAME (f
[0]) = name
;
5628 /* Add new field with name NAME and type FIELD to composite type T.
5629 ALIGNMENT (if non-zero) specifies the minimum field alignment. */
5632 append_composite_type_field_aligned (struct type
*t
, const char *name
,
5633 struct type
*field
, int alignment
)
5635 struct field
*f
= append_composite_type_field_raw (t
, name
, field
);
5637 if (TYPE_CODE (t
) == TYPE_CODE_UNION
)
5639 if (TYPE_LENGTH (t
) < TYPE_LENGTH (field
))
5640 TYPE_LENGTH (t
) = TYPE_LENGTH (field
);
5642 else if (TYPE_CODE (t
) == TYPE_CODE_STRUCT
)
5644 TYPE_LENGTH (t
) = TYPE_LENGTH (t
) + TYPE_LENGTH (field
);
5645 if (TYPE_NFIELDS (t
) > 1)
5647 SET_FIELD_BITPOS (f
[0],
5648 (FIELD_BITPOS (f
[-1])
5649 + (TYPE_LENGTH (FIELD_TYPE (f
[-1]))
5650 * TARGET_CHAR_BIT
)));
5656 alignment
*= TARGET_CHAR_BIT
;
5657 left
= FIELD_BITPOS (f
[0]) % alignment
;
5661 SET_FIELD_BITPOS (f
[0], FIELD_BITPOS (f
[0]) + (alignment
- left
));
5662 TYPE_LENGTH (t
) += (alignment
- left
) / TARGET_CHAR_BIT
;
5669 /* Add new field with name NAME and type FIELD to composite type T. */
5672 append_composite_type_field (struct type
*t
, const char *name
,
5675 append_composite_type_field_aligned (t
, name
, field
, 0);
5678 static struct gdbarch_data
*gdbtypes_data
;
5680 const struct builtin_type
*
5681 builtin_type (struct gdbarch
*gdbarch
)
5683 return (const struct builtin_type
*) gdbarch_data (gdbarch
, gdbtypes_data
);
5687 gdbtypes_post_init (struct gdbarch
*gdbarch
)
5689 struct builtin_type
*builtin_type
5690 = GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct builtin_type
);
5693 builtin_type
->builtin_void
5694 = arch_type (gdbarch
, TYPE_CODE_VOID
, TARGET_CHAR_BIT
, "void");
5695 builtin_type
->builtin_char
5696 = arch_integer_type (gdbarch
, TARGET_CHAR_BIT
,
5697 !gdbarch_char_signed (gdbarch
), "char");
5698 TYPE_NOSIGN (builtin_type
->builtin_char
) = 1;
5699 builtin_type
->builtin_signed_char
5700 = arch_integer_type (gdbarch
, TARGET_CHAR_BIT
,
5702 builtin_type
->builtin_unsigned_char
5703 = arch_integer_type (gdbarch
, TARGET_CHAR_BIT
,
5704 1, "unsigned char");
5705 builtin_type
->builtin_short
5706 = arch_integer_type (gdbarch
, gdbarch_short_bit (gdbarch
),
5708 builtin_type
->builtin_unsigned_short
5709 = arch_integer_type (gdbarch
, gdbarch_short_bit (gdbarch
),
5710 1, "unsigned short");
5711 builtin_type
->builtin_int
5712 = arch_integer_type (gdbarch
, gdbarch_int_bit (gdbarch
),
5714 builtin_type
->builtin_unsigned_int
5715 = arch_integer_type (gdbarch
, gdbarch_int_bit (gdbarch
),
5717 builtin_type
->builtin_long
5718 = arch_integer_type (gdbarch
, gdbarch_long_bit (gdbarch
),
5720 builtin_type
->builtin_unsigned_long
5721 = arch_integer_type (gdbarch
, gdbarch_long_bit (gdbarch
),
5722 1, "unsigned long");
5723 builtin_type
->builtin_long_long
5724 = arch_integer_type (gdbarch
, gdbarch_long_long_bit (gdbarch
),
5726 builtin_type
->builtin_unsigned_long_long
5727 = arch_integer_type (gdbarch
, gdbarch_long_long_bit (gdbarch
),
5728 1, "unsigned long long");
5729 builtin_type
->builtin_half
5730 = arch_float_type (gdbarch
, gdbarch_half_bit (gdbarch
),
5731 "half", gdbarch_half_format (gdbarch
));
5732 builtin_type
->builtin_float
5733 = arch_float_type (gdbarch
, gdbarch_float_bit (gdbarch
),
5734 "float", gdbarch_float_format (gdbarch
));
5735 builtin_type
->builtin_double
5736 = arch_float_type (gdbarch
, gdbarch_double_bit (gdbarch
),
5737 "double", gdbarch_double_format (gdbarch
));
5738 builtin_type
->builtin_long_double
5739 = arch_float_type (gdbarch
, gdbarch_long_double_bit (gdbarch
),
5740 "long double", gdbarch_long_double_format (gdbarch
));
5741 builtin_type
->builtin_complex
5742 = init_complex_type ("complex", builtin_type
->builtin_float
);
5743 builtin_type
->builtin_double_complex
5744 = init_complex_type ("double complex", builtin_type
->builtin_double
);
5745 builtin_type
->builtin_string
5746 = arch_type (gdbarch
, TYPE_CODE_STRING
, TARGET_CHAR_BIT
, "string");
5747 builtin_type
->builtin_bool
5748 = arch_type (gdbarch
, TYPE_CODE_BOOL
, TARGET_CHAR_BIT
, "bool");
5750 /* The following three are about decimal floating point types, which
5751 are 32-bits, 64-bits and 128-bits respectively. */
5752 builtin_type
->builtin_decfloat
5753 = arch_decfloat_type (gdbarch
, 32, "_Decimal32");
5754 builtin_type
->builtin_decdouble
5755 = arch_decfloat_type (gdbarch
, 64, "_Decimal64");
5756 builtin_type
->builtin_declong
5757 = arch_decfloat_type (gdbarch
, 128, "_Decimal128");
5759 /* "True" character types. */
5760 builtin_type
->builtin_true_char
5761 = arch_character_type (gdbarch
, TARGET_CHAR_BIT
, 0, "true character");
5762 builtin_type
->builtin_true_unsigned_char
5763 = arch_character_type (gdbarch
, TARGET_CHAR_BIT
, 1, "true character");
5765 /* Fixed-size integer types. */
5766 builtin_type
->builtin_int0
5767 = arch_integer_type (gdbarch
, 0, 0, "int0_t");
5768 builtin_type
->builtin_int8
5769 = arch_integer_type (gdbarch
, 8, 0, "int8_t");
5770 builtin_type
->builtin_uint8
5771 = arch_integer_type (gdbarch
, 8, 1, "uint8_t");
5772 builtin_type
->builtin_int16
5773 = arch_integer_type (gdbarch
, 16, 0, "int16_t");
5774 builtin_type
->builtin_uint16
5775 = arch_integer_type (gdbarch
, 16, 1, "uint16_t");
5776 builtin_type
->builtin_int24
5777 = arch_integer_type (gdbarch
, 24, 0, "int24_t");
5778 builtin_type
->builtin_uint24
5779 = arch_integer_type (gdbarch
, 24, 1, "uint24_t");
5780 builtin_type
->builtin_int32
5781 = arch_integer_type (gdbarch
, 32, 0, "int32_t");
5782 builtin_type
->builtin_uint32
5783 = arch_integer_type (gdbarch
, 32, 1, "uint32_t");
5784 builtin_type
->builtin_int64
5785 = arch_integer_type (gdbarch
, 64, 0, "int64_t");
5786 builtin_type
->builtin_uint64
5787 = arch_integer_type (gdbarch
, 64, 1, "uint64_t");
5788 builtin_type
->builtin_int128
5789 = arch_integer_type (gdbarch
, 128, 0, "int128_t");
5790 builtin_type
->builtin_uint128
5791 = arch_integer_type (gdbarch
, 128, 1, "uint128_t");
5792 TYPE_INSTANCE_FLAGS (builtin_type
->builtin_int8
) |=
5793 TYPE_INSTANCE_FLAG_NOTTEXT
;
5794 TYPE_INSTANCE_FLAGS (builtin_type
->builtin_uint8
) |=
5795 TYPE_INSTANCE_FLAG_NOTTEXT
;
5797 /* Wide character types. */
5798 builtin_type
->builtin_char16
5799 = arch_integer_type (gdbarch
, 16, 1, "char16_t");
5800 builtin_type
->builtin_char32
5801 = arch_integer_type (gdbarch
, 32, 1, "char32_t");
5802 builtin_type
->builtin_wchar
5803 = arch_integer_type (gdbarch
, gdbarch_wchar_bit (gdbarch
),
5804 !gdbarch_wchar_signed (gdbarch
), "wchar_t");
5806 /* Default data/code pointer types. */
5807 builtin_type
->builtin_data_ptr
5808 = lookup_pointer_type (builtin_type
->builtin_void
);
5809 builtin_type
->builtin_func_ptr
5810 = lookup_pointer_type (lookup_function_type (builtin_type
->builtin_void
));
5811 builtin_type
->builtin_func_func
5812 = lookup_function_type (builtin_type
->builtin_func_ptr
);
5814 /* This type represents a GDB internal function. */
5815 builtin_type
->internal_fn
5816 = arch_type (gdbarch
, TYPE_CODE_INTERNAL_FUNCTION
, 0,
5817 "<internal function>");
5819 /* This type represents an xmethod. */
5820 builtin_type
->xmethod
5821 = arch_type (gdbarch
, TYPE_CODE_XMETHOD
, 0, "<xmethod>");
5823 return builtin_type
;
5826 /* This set of objfile-based types is intended to be used by symbol
5827 readers as basic types. */
5829 static const struct objfile_key
<struct objfile_type
,
5830 gdb::noop_deleter
<struct objfile_type
>>
5833 const struct objfile_type
*
5834 objfile_type (struct objfile
*objfile
)
5836 struct gdbarch
*gdbarch
;
5837 struct objfile_type
*objfile_type
= objfile_type_data
.get (objfile
);
5840 return objfile_type
;
5842 objfile_type
= OBSTACK_CALLOC (&objfile
->objfile_obstack
,
5843 1, struct objfile_type
);
5845 /* Use the objfile architecture to determine basic type properties. */
5846 gdbarch
= objfile
->arch ();
5849 objfile_type
->builtin_void
5850 = init_type (objfile
, TYPE_CODE_VOID
, TARGET_CHAR_BIT
, "void");
5851 objfile_type
->builtin_char
5852 = init_integer_type (objfile
, TARGET_CHAR_BIT
,
5853 !gdbarch_char_signed (gdbarch
), "char");
5854 TYPE_NOSIGN (objfile_type
->builtin_char
) = 1;
5855 objfile_type
->builtin_signed_char
5856 = init_integer_type (objfile
, TARGET_CHAR_BIT
,
5858 objfile_type
->builtin_unsigned_char
5859 = init_integer_type (objfile
, TARGET_CHAR_BIT
,
5860 1, "unsigned char");
5861 objfile_type
->builtin_short
5862 = init_integer_type (objfile
, gdbarch_short_bit (gdbarch
),
5864 objfile_type
->builtin_unsigned_short
5865 = init_integer_type (objfile
, gdbarch_short_bit (gdbarch
),
5866 1, "unsigned short");
5867 objfile_type
->builtin_int
5868 = init_integer_type (objfile
, gdbarch_int_bit (gdbarch
),
5870 objfile_type
->builtin_unsigned_int
5871 = init_integer_type (objfile
, gdbarch_int_bit (gdbarch
),
5873 objfile_type
->builtin_long
5874 = init_integer_type (objfile
, gdbarch_long_bit (gdbarch
),
5876 objfile_type
->builtin_unsigned_long
5877 = init_integer_type (objfile
, gdbarch_long_bit (gdbarch
),
5878 1, "unsigned long");
5879 objfile_type
->builtin_long_long
5880 = init_integer_type (objfile
, gdbarch_long_long_bit (gdbarch
),
5882 objfile_type
->builtin_unsigned_long_long
5883 = init_integer_type (objfile
, gdbarch_long_long_bit (gdbarch
),
5884 1, "unsigned long long");
5885 objfile_type
->builtin_float
5886 = init_float_type (objfile
, gdbarch_float_bit (gdbarch
),
5887 "float", gdbarch_float_format (gdbarch
));
5888 objfile_type
->builtin_double
5889 = init_float_type (objfile
, gdbarch_double_bit (gdbarch
),
5890 "double", gdbarch_double_format (gdbarch
));
5891 objfile_type
->builtin_long_double
5892 = init_float_type (objfile
, gdbarch_long_double_bit (gdbarch
),
5893 "long double", gdbarch_long_double_format (gdbarch
));
5895 /* This type represents a type that was unrecognized in symbol read-in. */
5896 objfile_type
->builtin_error
5897 = init_type (objfile
, TYPE_CODE_ERROR
, 0, "<unknown type>");
5899 /* The following set of types is used for symbols with no
5900 debug information. */
5901 objfile_type
->nodebug_text_symbol
5902 = init_type (objfile
, TYPE_CODE_FUNC
, TARGET_CHAR_BIT
,
5903 "<text variable, no debug info>");
5904 objfile_type
->nodebug_text_gnu_ifunc_symbol
5905 = init_type (objfile
, TYPE_CODE_FUNC
, TARGET_CHAR_BIT
,
5906 "<text gnu-indirect-function variable, no debug info>");
5907 TYPE_GNU_IFUNC (objfile_type
->nodebug_text_gnu_ifunc_symbol
) = 1;
5908 objfile_type
->nodebug_got_plt_symbol
5909 = init_pointer_type (objfile
, gdbarch_addr_bit (gdbarch
),
5910 "<text from jump slot in .got.plt, no debug info>",
5911 objfile_type
->nodebug_text_symbol
);
5912 objfile_type
->nodebug_data_symbol
5913 = init_nodebug_var_type (objfile
, "<data variable, no debug info>");
5914 objfile_type
->nodebug_unknown_symbol
5915 = init_nodebug_var_type (objfile
, "<variable (not text or data), no debug info>");
5916 objfile_type
->nodebug_tls_symbol
5917 = init_nodebug_var_type (objfile
, "<thread local variable, no debug info>");
5919 /* NOTE: on some targets, addresses and pointers are not necessarily
5923 - gdb's `struct type' always describes the target's
5925 - gdb's `struct value' objects should always hold values in
5927 - gdb's CORE_ADDR values are addresses in the unified virtual
5928 address space that the assembler and linker work with. Thus,
5929 since target_read_memory takes a CORE_ADDR as an argument, it
5930 can access any memory on the target, even if the processor has
5931 separate code and data address spaces.
5933 In this context, objfile_type->builtin_core_addr is a bit odd:
5934 it's a target type for a value the target will never see. It's
5935 only used to hold the values of (typeless) linker symbols, which
5936 are indeed in the unified virtual address space. */
5938 objfile_type
->builtin_core_addr
5939 = init_integer_type (objfile
, gdbarch_addr_bit (gdbarch
), 1,
5942 objfile_type_data
.set (objfile
, objfile_type
);
5943 return objfile_type
;
5946 void _initialize_gdbtypes ();
5948 _initialize_gdbtypes ()
5950 gdbtypes_data
= gdbarch_data_register_post_init (gdbtypes_post_init
);
5952 add_setshow_zuinteger_cmd ("overload", no_class
, &overload_debug
,
5953 _("Set debugging of C++ overloading."),
5954 _("Show debugging of C++ overloading."),
5955 _("When enabled, ranking of the "
5956 "functions is displayed."),
5958 show_overload_debug
,
5959 &setdebuglist
, &showdebuglist
);
5961 /* Add user knob for controlling resolution of opaque types. */
5962 add_setshow_boolean_cmd ("opaque-type-resolution", class_support
,
5963 &opaque_type_resolution
,
5964 _("Set resolution of opaque struct/class/union"
5965 " types (if set before loading symbols)."),
5966 _("Show resolution of opaque struct/class/union"
5967 " types (if set before loading symbols)."),
5969 show_opaque_type_resolution
,
5970 &setlist
, &showlist
);
5972 /* Add an option to permit non-strict type checking. */
5973 add_setshow_boolean_cmd ("type", class_support
,
5974 &strict_type_checking
,
5975 _("Set strict type checking."),
5976 _("Show strict type checking."),
5978 show_strict_type_checking
,
5979 &setchecklist
, &showchecklist
);