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
118 const struct floatformat
*floatformats_bfloat16
[BFD_ENDIAN_UNKNOWN
] = {
119 &floatformat_bfloat16_big
,
120 &floatformat_bfloat16_little
123 /* Should opaque types be resolved? */
125 static bool opaque_type_resolution
= true;
127 /* See gdbtypes.h. */
129 unsigned int overload_debug
= 0;
131 /* A flag to enable strict type checking. */
133 static bool strict_type_checking
= true;
135 /* A function to show whether opaque types are resolved. */
138 show_opaque_type_resolution (struct ui_file
*file
, int from_tty
,
139 struct cmd_list_element
*c
,
142 fprintf_filtered (file
, _("Resolution of opaque struct/class/union types "
143 "(if set before loading symbols) is %s.\n"),
147 /* A function to show whether C++ overload debugging is enabled. */
150 show_overload_debug (struct ui_file
*file
, int from_tty
,
151 struct cmd_list_element
*c
, const char *value
)
153 fprintf_filtered (file
, _("Debugging of C++ overloading is %s.\n"),
157 /* A function to show the status of strict type checking. */
160 show_strict_type_checking (struct ui_file
*file
, int from_tty
,
161 struct cmd_list_element
*c
, const char *value
)
163 fprintf_filtered (file
, _("Strict type checking is %s.\n"), value
);
167 /* Allocate a new OBJFILE-associated type structure and fill it
168 with some defaults. Space for the type structure is allocated
169 on the objfile's objfile_obstack. */
172 alloc_type (struct objfile
*objfile
)
176 gdb_assert (objfile
!= NULL
);
178 /* Alloc the structure and start off with all fields zeroed. */
179 type
= OBSTACK_ZALLOC (&objfile
->objfile_obstack
, struct type
);
180 TYPE_MAIN_TYPE (type
) = OBSTACK_ZALLOC (&objfile
->objfile_obstack
,
182 OBJSTAT (objfile
, n_types
++);
184 TYPE_OBJFILE_OWNED (type
) = 1;
185 TYPE_OWNER (type
).objfile
= objfile
;
187 /* Initialize the fields that might not be zero. */
189 type
->set_code (TYPE_CODE_UNDEF
);
190 TYPE_CHAIN (type
) = type
; /* Chain back to itself. */
195 /* Allocate a new GDBARCH-associated type structure and fill it
196 with some defaults. Space for the type structure is allocated
197 on the obstack associated with GDBARCH. */
200 alloc_type_arch (struct gdbarch
*gdbarch
)
204 gdb_assert (gdbarch
!= NULL
);
206 /* Alloc the structure and start off with all fields zeroed. */
208 type
= GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct type
);
209 TYPE_MAIN_TYPE (type
) = GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct main_type
);
211 TYPE_OBJFILE_OWNED (type
) = 0;
212 TYPE_OWNER (type
).gdbarch
= gdbarch
;
214 /* Initialize the fields that might not be zero. */
216 type
->set_code (TYPE_CODE_UNDEF
);
217 TYPE_CHAIN (type
) = type
; /* Chain back to itself. */
222 /* If TYPE is objfile-associated, allocate a new type structure
223 associated with the same objfile. If TYPE is gdbarch-associated,
224 allocate a new type structure associated with the same gdbarch. */
227 alloc_type_copy (const struct type
*type
)
229 if (TYPE_OBJFILE_OWNED (type
))
230 return alloc_type (TYPE_OWNER (type
).objfile
);
232 return alloc_type_arch (TYPE_OWNER (type
).gdbarch
);
235 /* If TYPE is gdbarch-associated, return that architecture.
236 If TYPE is objfile-associated, return that objfile's architecture. */
239 get_type_arch (const struct type
*type
)
241 struct gdbarch
*arch
;
243 if (TYPE_OBJFILE_OWNED (type
))
244 arch
= TYPE_OWNER (type
).objfile
->arch ();
246 arch
= TYPE_OWNER (type
).gdbarch
;
248 /* The ARCH can be NULL if TYPE is associated with neither an objfile nor
249 a gdbarch, however, this is very rare, and even then, in most cases
250 that get_type_arch is called, we assume that a non-NULL value is
252 gdb_assert (arch
!= NULL
);
256 /* See gdbtypes.h. */
259 get_target_type (struct type
*type
)
263 type
= TYPE_TARGET_TYPE (type
);
265 type
= check_typedef (type
);
271 /* See gdbtypes.h. */
274 type_length_units (struct type
*type
)
276 struct gdbarch
*arch
= get_type_arch (type
);
277 int unit_size
= gdbarch_addressable_memory_unit_size (arch
);
279 return TYPE_LENGTH (type
) / unit_size
;
282 /* Alloc a new type instance structure, fill it with some defaults,
283 and point it at OLDTYPE. Allocate the new type instance from the
284 same place as OLDTYPE. */
287 alloc_type_instance (struct type
*oldtype
)
291 /* Allocate the structure. */
293 if (! TYPE_OBJFILE_OWNED (oldtype
))
294 type
= GDBARCH_OBSTACK_ZALLOC (get_type_arch (oldtype
), struct type
);
296 type
= OBSTACK_ZALLOC (&TYPE_OBJFILE (oldtype
)->objfile_obstack
,
299 TYPE_MAIN_TYPE (type
) = TYPE_MAIN_TYPE (oldtype
);
301 TYPE_CHAIN (type
) = type
; /* Chain back to itself for now. */
306 /* Clear all remnants of the previous type at TYPE, in preparation for
307 replacing it with something else. Preserve owner information. */
310 smash_type (struct type
*type
)
312 int objfile_owned
= TYPE_OBJFILE_OWNED (type
);
313 union type_owner owner
= TYPE_OWNER (type
);
315 memset (TYPE_MAIN_TYPE (type
), 0, sizeof (struct main_type
));
317 /* Restore owner information. */
318 TYPE_OBJFILE_OWNED (type
) = objfile_owned
;
319 TYPE_OWNER (type
) = owner
;
321 /* For now, delete the rings. */
322 TYPE_CHAIN (type
) = type
;
324 /* For now, leave the pointer/reference types alone. */
327 /* Lookup a pointer to a type TYPE. TYPEPTR, if nonzero, points
328 to a pointer to memory where the pointer type should be stored.
329 If *TYPEPTR is zero, update it to point to the pointer type we return.
330 We allocate new memory if needed. */
333 make_pointer_type (struct type
*type
, struct type
**typeptr
)
335 struct type
*ntype
; /* New type */
338 ntype
= TYPE_POINTER_TYPE (type
);
343 return ntype
; /* Don't care about alloc,
344 and have new type. */
345 else if (*typeptr
== 0)
347 *typeptr
= ntype
; /* Tracking alloc, and have new type. */
352 if (typeptr
== 0 || *typeptr
== 0) /* We'll need to allocate one. */
354 ntype
= alloc_type_copy (type
);
358 else /* We have storage, but need to reset it. */
361 chain
= TYPE_CHAIN (ntype
);
363 TYPE_CHAIN (ntype
) = chain
;
366 TYPE_TARGET_TYPE (ntype
) = type
;
367 TYPE_POINTER_TYPE (type
) = ntype
;
369 /* FIXME! Assumes the machine has only one representation for pointers! */
372 = gdbarch_ptr_bit (get_type_arch (type
)) / TARGET_CHAR_BIT
;
373 ntype
->set_code (TYPE_CODE_PTR
);
375 /* Mark pointers as unsigned. The target converts between pointers
376 and addresses (CORE_ADDRs) using gdbarch_pointer_to_address and
377 gdbarch_address_to_pointer. */
378 ntype
->set_is_unsigned (true);
380 /* Update the length of all the other variants of this type. */
381 chain
= TYPE_CHAIN (ntype
);
382 while (chain
!= ntype
)
384 TYPE_LENGTH (chain
) = TYPE_LENGTH (ntype
);
385 chain
= TYPE_CHAIN (chain
);
391 /* Given a type TYPE, return a type of pointers to that type.
392 May need to construct such a type if this is the first use. */
395 lookup_pointer_type (struct type
*type
)
397 return make_pointer_type (type
, (struct type
**) 0);
400 /* Lookup a C++ `reference' to a type TYPE. TYPEPTR, if nonzero,
401 points to a pointer to memory where the reference type should be
402 stored. If *TYPEPTR is zero, update it to point to the reference
403 type we return. We allocate new memory if needed. REFCODE denotes
404 the kind of reference type to lookup (lvalue or rvalue reference). */
407 make_reference_type (struct type
*type
, struct type
**typeptr
,
408 enum type_code refcode
)
410 struct type
*ntype
; /* New type */
411 struct type
**reftype
;
414 gdb_assert (refcode
== TYPE_CODE_REF
|| refcode
== TYPE_CODE_RVALUE_REF
);
416 ntype
= (refcode
== TYPE_CODE_REF
? TYPE_REFERENCE_TYPE (type
)
417 : TYPE_RVALUE_REFERENCE_TYPE (type
));
422 return ntype
; /* Don't care about alloc,
423 and have new type. */
424 else if (*typeptr
== 0)
426 *typeptr
= ntype
; /* Tracking alloc, and have new type. */
431 if (typeptr
== 0 || *typeptr
== 0) /* We'll need to allocate one. */
433 ntype
= alloc_type_copy (type
);
437 else /* We have storage, but need to reset it. */
440 chain
= TYPE_CHAIN (ntype
);
442 TYPE_CHAIN (ntype
) = chain
;
445 TYPE_TARGET_TYPE (ntype
) = type
;
446 reftype
= (refcode
== TYPE_CODE_REF
? &TYPE_REFERENCE_TYPE (type
)
447 : &TYPE_RVALUE_REFERENCE_TYPE (type
));
451 /* FIXME! Assume the machine has only one representation for
452 references, and that it matches the (only) representation for
455 TYPE_LENGTH (ntype
) =
456 gdbarch_ptr_bit (get_type_arch (type
)) / TARGET_CHAR_BIT
;
457 ntype
->set_code (refcode
);
461 /* Update the length of all the other variants of this type. */
462 chain
= TYPE_CHAIN (ntype
);
463 while (chain
!= ntype
)
465 TYPE_LENGTH (chain
) = TYPE_LENGTH (ntype
);
466 chain
= TYPE_CHAIN (chain
);
472 /* Same as above, but caller doesn't care about memory allocation
476 lookup_reference_type (struct type
*type
, enum type_code refcode
)
478 return make_reference_type (type
, (struct type
**) 0, refcode
);
481 /* Lookup the lvalue reference type for the type TYPE. */
484 lookup_lvalue_reference_type (struct type
*type
)
486 return lookup_reference_type (type
, TYPE_CODE_REF
);
489 /* Lookup the rvalue reference type for the type TYPE. */
492 lookup_rvalue_reference_type (struct type
*type
)
494 return lookup_reference_type (type
, TYPE_CODE_RVALUE_REF
);
497 /* Lookup a function type that returns type TYPE. TYPEPTR, if
498 nonzero, points to a pointer to memory where the function type
499 should be stored. If *TYPEPTR is zero, update it to point to the
500 function type we return. We allocate new memory if needed. */
503 make_function_type (struct type
*type
, struct type
**typeptr
)
505 struct type
*ntype
; /* New type */
507 if (typeptr
== 0 || *typeptr
== 0) /* We'll need to allocate one. */
509 ntype
= alloc_type_copy (type
);
513 else /* We have storage, but need to reset it. */
519 TYPE_TARGET_TYPE (ntype
) = type
;
521 TYPE_LENGTH (ntype
) = 1;
522 ntype
->set_code (TYPE_CODE_FUNC
);
524 INIT_FUNC_SPECIFIC (ntype
);
529 /* Given a type TYPE, return a type of functions that return that type.
530 May need to construct such a type if this is the first use. */
533 lookup_function_type (struct type
*type
)
535 return make_function_type (type
, (struct type
**) 0);
538 /* Given a type TYPE and argument types, return the appropriate
539 function type. If the final type in PARAM_TYPES is NULL, make a
543 lookup_function_type_with_arguments (struct type
*type
,
545 struct type
**param_types
)
547 struct type
*fn
= make_function_type (type
, (struct type
**) 0);
552 if (param_types
[nparams
- 1] == NULL
)
555 fn
->set_has_varargs (true);
557 else if (check_typedef (param_types
[nparams
- 1])->code ()
561 /* Caller should have ensured this. */
562 gdb_assert (nparams
== 0);
563 fn
->set_is_prototyped (true);
566 fn
->set_is_prototyped (true);
569 fn
->set_num_fields (nparams
);
571 ((struct field
*) TYPE_ZALLOC (fn
, nparams
* sizeof (struct field
)));
572 for (i
= 0; i
< nparams
; ++i
)
573 fn
->field (i
).set_type (param_types
[i
]);
578 /* Identify address space identifier by name -- return a
579 type_instance_flags. */
582 address_space_name_to_type_instance_flags (struct gdbarch
*gdbarch
,
583 const char *space_identifier
)
585 type_instance_flags type_flags
;
587 /* Check for known address space delimiters. */
588 if (!strcmp (space_identifier
, "code"))
589 return TYPE_INSTANCE_FLAG_CODE_SPACE
;
590 else if (!strcmp (space_identifier
, "data"))
591 return TYPE_INSTANCE_FLAG_DATA_SPACE
;
592 else if (gdbarch_address_class_name_to_type_flags_p (gdbarch
)
593 && gdbarch_address_class_name_to_type_flags (gdbarch
,
598 error (_("Unknown address space specifier: \"%s\""), space_identifier
);
601 /* Identify address space identifier by type_instance_flags and return
602 the string version of the adress space name. */
605 address_space_type_instance_flags_to_name (struct gdbarch
*gdbarch
,
606 type_instance_flags space_flag
)
608 if (space_flag
& TYPE_INSTANCE_FLAG_CODE_SPACE
)
610 else if (space_flag
& TYPE_INSTANCE_FLAG_DATA_SPACE
)
612 else if ((space_flag
& TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL
)
613 && gdbarch_address_class_type_flags_to_name_p (gdbarch
))
614 return gdbarch_address_class_type_flags_to_name (gdbarch
, space_flag
);
619 /* Create a new type with instance flags NEW_FLAGS, based on TYPE.
621 If STORAGE is non-NULL, create the new type instance there.
622 STORAGE must be in the same obstack as TYPE. */
625 make_qualified_type (struct type
*type
, type_instance_flags new_flags
,
626 struct type
*storage
)
633 if (ntype
->instance_flags () == new_flags
)
635 ntype
= TYPE_CHAIN (ntype
);
637 while (ntype
!= type
);
639 /* Create a new type instance. */
641 ntype
= alloc_type_instance (type
);
644 /* If STORAGE was provided, it had better be in the same objfile
645 as TYPE. Otherwise, we can't link it into TYPE's cv chain:
646 if one objfile is freed and the other kept, we'd have
647 dangling pointers. */
648 gdb_assert (TYPE_OBJFILE (type
) == TYPE_OBJFILE (storage
));
651 TYPE_MAIN_TYPE (ntype
) = TYPE_MAIN_TYPE (type
);
652 TYPE_CHAIN (ntype
) = ntype
;
655 /* Pointers or references to the original type are not relevant to
657 TYPE_POINTER_TYPE (ntype
) = (struct type
*) 0;
658 TYPE_REFERENCE_TYPE (ntype
) = (struct type
*) 0;
660 /* Chain the new qualified type to the old type. */
661 TYPE_CHAIN (ntype
) = TYPE_CHAIN (type
);
662 TYPE_CHAIN (type
) = ntype
;
664 /* Now set the instance flags and return the new type. */
665 ntype
->set_instance_flags (new_flags
);
667 /* Set length of new type to that of the original type. */
668 TYPE_LENGTH (ntype
) = TYPE_LENGTH (type
);
673 /* Make an address-space-delimited variant of a type -- a type that
674 is identical to the one supplied except that it has an address
675 space attribute attached to it (such as "code" or "data").
677 The space attributes "code" and "data" are for Harvard
678 architectures. The address space attributes are for architectures
679 which have alternately sized pointers or pointers with alternate
683 make_type_with_address_space (struct type
*type
,
684 type_instance_flags space_flag
)
686 type_instance_flags new_flags
= ((type
->instance_flags ()
687 & ~(TYPE_INSTANCE_FLAG_CODE_SPACE
688 | TYPE_INSTANCE_FLAG_DATA_SPACE
689 | TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL
))
692 return make_qualified_type (type
, new_flags
, NULL
);
695 /* Make a "c-v" variant of a type -- a type that is identical to the
696 one supplied except that it may have const or volatile attributes
697 CNST is a flag for setting the const attribute
698 VOLTL is a flag for setting the volatile attribute
699 TYPE is the base type whose variant we are creating.
701 If TYPEPTR and *TYPEPTR are non-zero, then *TYPEPTR points to
702 storage to hold the new qualified type; *TYPEPTR and TYPE must be
703 in the same objfile. Otherwise, allocate fresh memory for the new
704 type whereever TYPE lives. If TYPEPTR is non-zero, set it to the
705 new type we construct. */
708 make_cv_type (int cnst
, int voltl
,
710 struct type
**typeptr
)
712 struct type
*ntype
; /* New type */
714 type_instance_flags new_flags
= (type
->instance_flags ()
715 & ~(TYPE_INSTANCE_FLAG_CONST
716 | TYPE_INSTANCE_FLAG_VOLATILE
));
719 new_flags
|= TYPE_INSTANCE_FLAG_CONST
;
722 new_flags
|= TYPE_INSTANCE_FLAG_VOLATILE
;
724 if (typeptr
&& *typeptr
!= NULL
)
726 /* TYPE and *TYPEPTR must be in the same objfile. We can't have
727 a C-V variant chain that threads across objfiles: if one
728 objfile gets freed, then the other has a broken C-V chain.
730 This code used to try to copy over the main type from TYPE to
731 *TYPEPTR if they were in different objfiles, but that's
732 wrong, too: TYPE may have a field list or member function
733 lists, which refer to types of their own, etc. etc. The
734 whole shebang would need to be copied over recursively; you
735 can't have inter-objfile pointers. The only thing to do is
736 to leave stub types as stub types, and look them up afresh by
737 name each time you encounter them. */
738 gdb_assert (TYPE_OBJFILE (*typeptr
) == TYPE_OBJFILE (type
));
741 ntype
= make_qualified_type (type
, new_flags
,
742 typeptr
? *typeptr
: NULL
);
750 /* Make a 'restrict'-qualified version of TYPE. */
753 make_restrict_type (struct type
*type
)
755 return make_qualified_type (type
,
756 (type
->instance_flags ()
757 | TYPE_INSTANCE_FLAG_RESTRICT
),
761 /* Make a type without const, volatile, or restrict. */
764 make_unqualified_type (struct type
*type
)
766 return make_qualified_type (type
,
767 (type
->instance_flags ()
768 & ~(TYPE_INSTANCE_FLAG_CONST
769 | TYPE_INSTANCE_FLAG_VOLATILE
770 | TYPE_INSTANCE_FLAG_RESTRICT
)),
774 /* Make a '_Atomic'-qualified version of TYPE. */
777 make_atomic_type (struct type
*type
)
779 return make_qualified_type (type
,
780 (type
->instance_flags ()
781 | TYPE_INSTANCE_FLAG_ATOMIC
),
785 /* Replace the contents of ntype with the type *type. This changes the
786 contents, rather than the pointer for TYPE_MAIN_TYPE (ntype); thus
787 the changes are propogated to all types in the TYPE_CHAIN.
789 In order to build recursive types, it's inevitable that we'll need
790 to update types in place --- but this sort of indiscriminate
791 smashing is ugly, and needs to be replaced with something more
792 controlled. TYPE_MAIN_TYPE is a step in this direction; it's not
793 clear if more steps are needed. */
796 replace_type (struct type
*ntype
, struct type
*type
)
800 /* These two types had better be in the same objfile. Otherwise,
801 the assignment of one type's main type structure to the other
802 will produce a type with references to objects (names; field
803 lists; etc.) allocated on an objfile other than its own. */
804 gdb_assert (TYPE_OBJFILE (ntype
) == TYPE_OBJFILE (type
));
806 *TYPE_MAIN_TYPE (ntype
) = *TYPE_MAIN_TYPE (type
);
808 /* The type length is not a part of the main type. Update it for
809 each type on the variant chain. */
813 /* Assert that this element of the chain has no address-class bits
814 set in its flags. Such type variants might have type lengths
815 which are supposed to be different from the non-address-class
816 variants. This assertion shouldn't ever be triggered because
817 symbol readers which do construct address-class variants don't
818 call replace_type(). */
819 gdb_assert (TYPE_ADDRESS_CLASS_ALL (chain
) == 0);
821 TYPE_LENGTH (chain
) = TYPE_LENGTH (type
);
822 chain
= TYPE_CHAIN (chain
);
824 while (ntype
!= chain
);
826 /* Assert that the two types have equivalent instance qualifiers.
827 This should be true for at least all of our debug readers. */
828 gdb_assert (ntype
->instance_flags () == type
->instance_flags ());
831 /* Implement direct support for MEMBER_TYPE in GNU C++.
832 May need to construct such a type if this is the first use.
833 The TYPE is the type of the member. The DOMAIN is the type
834 of the aggregate that the member belongs to. */
837 lookup_memberptr_type (struct type
*type
, struct type
*domain
)
841 mtype
= alloc_type_copy (type
);
842 smash_to_memberptr_type (mtype
, domain
, type
);
846 /* Return a pointer-to-method type, for a method of type TO_TYPE. */
849 lookup_methodptr_type (struct type
*to_type
)
853 mtype
= alloc_type_copy (to_type
);
854 smash_to_methodptr_type (mtype
, to_type
);
858 /* Allocate a stub method whose return type is TYPE. This apparently
859 happens for speed of symbol reading, since parsing out the
860 arguments to the method is cpu-intensive, the way we are doing it.
861 So, we will fill in arguments later. This always returns a fresh
865 allocate_stub_method (struct type
*type
)
869 mtype
= alloc_type_copy (type
);
870 mtype
->set_code (TYPE_CODE_METHOD
);
871 TYPE_LENGTH (mtype
) = 1;
872 mtype
->set_is_stub (true);
873 TYPE_TARGET_TYPE (mtype
) = type
;
874 /* TYPE_SELF_TYPE (mtype) = unknown yet */
878 /* See gdbtypes.h. */
881 operator== (const dynamic_prop
&l
, const dynamic_prop
&r
)
883 if (l
.kind () != r
.kind ())
891 return l
.const_val () == r
.const_val ();
892 case PROP_ADDR_OFFSET
:
895 return l
.baton () == r
.baton ();
896 case PROP_VARIANT_PARTS
:
897 return l
.variant_parts () == r
.variant_parts ();
899 return l
.original_type () == r
.original_type ();
902 gdb_assert_not_reached ("unhandled dynamic_prop kind");
905 /* See gdbtypes.h. */
908 operator== (const range_bounds
&l
, const range_bounds
&r
)
910 #define FIELD_EQ(FIELD) (l.FIELD == r.FIELD)
912 return (FIELD_EQ (low
)
914 && FIELD_EQ (flag_upper_bound_is_count
)
915 && FIELD_EQ (flag_bound_evaluated
)
921 /* Create a range type with a dynamic range from LOW_BOUND to
922 HIGH_BOUND, inclusive. See create_range_type for further details. */
925 create_range_type (struct type
*result_type
, struct type
*index_type
,
926 const struct dynamic_prop
*low_bound
,
927 const struct dynamic_prop
*high_bound
,
930 /* The INDEX_TYPE should be a type capable of holding the upper and lower
931 bounds, as such a zero sized, or void type makes no sense. */
932 gdb_assert (index_type
->code () != TYPE_CODE_VOID
);
933 gdb_assert (TYPE_LENGTH (index_type
) > 0);
935 if (result_type
== NULL
)
936 result_type
= alloc_type_copy (index_type
);
937 result_type
->set_code (TYPE_CODE_RANGE
);
938 TYPE_TARGET_TYPE (result_type
) = index_type
;
939 if (index_type
->is_stub ())
940 result_type
->set_target_is_stub (true);
942 TYPE_LENGTH (result_type
) = TYPE_LENGTH (check_typedef (index_type
));
945 = (struct range_bounds
*) TYPE_ZALLOC (result_type
, sizeof (range_bounds
));
946 bounds
->low
= *low_bound
;
947 bounds
->high
= *high_bound
;
949 bounds
->stride
.set_const_val (0);
951 result_type
->set_bounds (bounds
);
953 /* Note that the signed-ness of a range type can't simply be copied
954 from the underlying type. Consider a case where the underlying
955 type is 'int', but the range type can hold 0..65535, and where
956 the range is further specified to fit into 16 bits. In this
957 case, if we copy the underlying type's sign, then reading some
958 range values will cause an unwanted sign extension. So, we have
959 some heuristics here instead. */
960 if (low_bound
->kind () == PROP_CONST
&& low_bound
->const_val () >= 0)
961 result_type
->set_is_unsigned (true);
962 /* Ada allows the declaration of range types whose upper bound is
963 less than the lower bound, so checking the lower bound is not
964 enough. Make sure we do not mark a range type whose upper bound
965 is negative as unsigned. */
966 if (high_bound
->kind () == PROP_CONST
&& high_bound
->const_val () < 0)
967 result_type
->set_is_unsigned (false);
969 result_type
->set_endianity_is_not_default
970 (index_type
->endianity_is_not_default ());
975 /* See gdbtypes.h. */
978 create_range_type_with_stride (struct type
*result_type
,
979 struct type
*index_type
,
980 const struct dynamic_prop
*low_bound
,
981 const struct dynamic_prop
*high_bound
,
983 const struct dynamic_prop
*stride
,
986 result_type
= create_range_type (result_type
, index_type
, low_bound
,
989 gdb_assert (stride
!= nullptr);
990 result_type
->bounds ()->stride
= *stride
;
991 result_type
->bounds ()->flag_is_byte_stride
= byte_stride_p
;
998 /* Create a range type using either a blank type supplied in
999 RESULT_TYPE, or creating a new type, inheriting the objfile from
1002 Indices will be of type INDEX_TYPE, and will range from LOW_BOUND
1003 to HIGH_BOUND, inclusive.
1005 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
1006 sure it is TYPE_CODE_UNDEF before we bash it into a range type? */
1009 create_static_range_type (struct type
*result_type
, struct type
*index_type
,
1010 LONGEST low_bound
, LONGEST high_bound
)
1012 struct dynamic_prop low
, high
;
1014 low
.set_const_val (low_bound
);
1015 high
.set_const_val (high_bound
);
1017 result_type
= create_range_type (result_type
, index_type
, &low
, &high
, 0);
1022 /* Predicate tests whether BOUNDS are static. Returns 1 if all bounds values
1023 are static, otherwise returns 0. */
1026 has_static_range (const struct range_bounds
*bounds
)
1028 /* If the range doesn't have a defined stride then its stride field will
1029 be initialized to the constant 0. */
1030 return (bounds
->low
.kind () == PROP_CONST
1031 && bounds
->high
.kind () == PROP_CONST
1032 && bounds
->stride
.kind () == PROP_CONST
);
1036 /* Set *LOWP and *HIGHP to the lower and upper bounds of discrete type
1039 Return 1 if type is a range type with two defined, constant bounds.
1040 Else, return 0 if it is discrete (and bounds will fit in LONGEST).
1044 get_discrete_bounds (struct type
*type
, LONGEST
*lowp
, LONGEST
*highp
)
1046 type
= check_typedef (type
);
1047 switch (type
->code ())
1049 case TYPE_CODE_RANGE
:
1050 /* This function currently only works for ranges with two defined,
1052 if (type
->bounds ()->low
.kind () != PROP_CONST
1053 || type
->bounds ()->high
.kind () != PROP_CONST
)
1056 *lowp
= type
->bounds ()->low
.const_val ();
1057 *highp
= type
->bounds ()->high
.const_val ();
1059 if (TYPE_TARGET_TYPE (type
)->code () == TYPE_CODE_ENUM
)
1061 if (!discrete_position (TYPE_TARGET_TYPE (type
), *lowp
, lowp
)
1062 || ! discrete_position (TYPE_TARGET_TYPE (type
), *highp
, highp
))
1066 case TYPE_CODE_ENUM
:
1067 if (type
->num_fields () > 0)
1069 /* The enums may not be sorted by value, so search all
1073 *lowp
= *highp
= TYPE_FIELD_ENUMVAL (type
, 0);
1074 for (i
= 0; i
< type
->num_fields (); i
++)
1076 if (TYPE_FIELD_ENUMVAL (type
, i
) < *lowp
)
1077 *lowp
= TYPE_FIELD_ENUMVAL (type
, i
);
1078 if (TYPE_FIELD_ENUMVAL (type
, i
) > *highp
)
1079 *highp
= TYPE_FIELD_ENUMVAL (type
, i
);
1082 /* Set unsigned indicator if warranted. */
1084 type
->set_is_unsigned (true);
1092 case TYPE_CODE_BOOL
:
1097 if (TYPE_LENGTH (type
) > sizeof (LONGEST
)) /* Too big */
1099 if (!type
->is_unsigned ())
1101 *lowp
= -(1 << (TYPE_LENGTH (type
) * TARGET_CHAR_BIT
- 1));
1102 *highp
= -*lowp
- 1;
1106 case TYPE_CODE_CHAR
:
1108 /* This round-about calculation is to avoid shifting by
1109 TYPE_LENGTH (type) * TARGET_CHAR_BIT, which will not work
1110 if TYPE_LENGTH (type) == sizeof (LONGEST). */
1111 *highp
= 1 << (TYPE_LENGTH (type
) * TARGET_CHAR_BIT
- 1);
1112 *highp
= (*highp
- 1) | *highp
;
1119 /* Assuming TYPE is a simple, non-empty array type, compute its upper
1120 and lower bound. Save the low bound into LOW_BOUND if not NULL.
1121 Save the high bound into HIGH_BOUND if not NULL.
1123 Return 1 if the operation was successful. Return zero otherwise,
1124 in which case the values of LOW_BOUND and HIGH_BOUNDS are unmodified. */
1127 get_array_bounds (struct type
*type
, LONGEST
*low_bound
, LONGEST
*high_bound
)
1129 struct type
*index
= type
->index_type ();
1137 res
= get_discrete_bounds (index
, &low
, &high
);
1150 /* Assuming that TYPE is a discrete type and VAL is a valid integer
1151 representation of a value of this type, save the corresponding
1152 position number in POS.
1154 Its differs from VAL only in the case of enumeration types. In
1155 this case, the position number of the value of the first listed
1156 enumeration literal is zero; the position number of the value of
1157 each subsequent enumeration literal is one more than that of its
1158 predecessor in the list.
1160 Return 1 if the operation was successful. Return zero otherwise,
1161 in which case the value of POS is unmodified.
1165 discrete_position (struct type
*type
, LONGEST val
, LONGEST
*pos
)
1167 if (type
->code () == TYPE_CODE_RANGE
)
1168 type
= TYPE_TARGET_TYPE (type
);
1170 if (type
->code () == TYPE_CODE_ENUM
)
1174 for (i
= 0; i
< type
->num_fields (); i
+= 1)
1176 if (val
== TYPE_FIELD_ENUMVAL (type
, i
))
1182 /* Invalid enumeration value. */
1192 /* If the array TYPE has static bounds calculate and update its
1193 size, then return true. Otherwise return false and leave TYPE
1197 update_static_array_size (struct type
*type
)
1199 gdb_assert (type
->code () == TYPE_CODE_ARRAY
);
1201 struct type
*range_type
= type
->index_type ();
1203 if (type
->dyn_prop (DYN_PROP_BYTE_STRIDE
) == nullptr
1204 && has_static_range (range_type
->bounds ())
1205 && (!type_not_associated (type
)
1206 && !type_not_allocated (type
)))
1208 LONGEST low_bound
, high_bound
;
1210 struct type
*element_type
;
1212 /* If the array itself doesn't provide a stride value then take
1213 whatever stride the range provides. Don't update BIT_STRIDE as
1214 we don't want to place the stride value from the range into this
1215 arrays bit size field. */
1216 stride
= TYPE_FIELD_BITSIZE (type
, 0);
1218 stride
= range_type
->bit_stride ();
1220 if (get_discrete_bounds (range_type
, &low_bound
, &high_bound
) < 0)
1221 low_bound
= high_bound
= 0;
1222 element_type
= check_typedef (TYPE_TARGET_TYPE (type
));
1223 /* Be careful when setting the array length. Ada arrays can be
1224 empty arrays with the high_bound being smaller than the low_bound.
1225 In such cases, the array length should be zero. */
1226 if (high_bound
< low_bound
)
1227 TYPE_LENGTH (type
) = 0;
1228 else if (stride
!= 0)
1230 /* Ensure that the type length is always positive, even in the
1231 case where (for example in Fortran) we have a negative
1232 stride. It is possible to have a single element array with a
1233 negative stride in Fortran (this doesn't mean anything
1234 special, it's still just a single element array) so do
1235 consider that case when touching this code. */
1236 LONGEST element_count
= std::abs (high_bound
- low_bound
+ 1);
1238 = ((std::abs (stride
) * element_count
) + 7) / 8;
1241 TYPE_LENGTH (type
) =
1242 TYPE_LENGTH (element_type
) * (high_bound
- low_bound
+ 1);
1244 /* If this array's element is itself an array with a bit stride,
1245 then we want to update this array's bit stride to reflect the
1246 size of the sub-array. Otherwise, we'll end up using the
1247 wrong size when trying to find elements of the outer
1249 if (element_type
->code () == TYPE_CODE_ARRAY
1250 && TYPE_LENGTH (element_type
) != 0
1251 && TYPE_FIELD_BITSIZE (element_type
, 0) != 0
1252 && get_array_bounds (element_type
, &low_bound
, &high_bound
) >= 0
1253 && high_bound
>= low_bound
)
1254 TYPE_FIELD_BITSIZE (type
, 0)
1255 = ((high_bound
- low_bound
+ 1)
1256 * TYPE_FIELD_BITSIZE (element_type
, 0));
1264 /* Create an array type using either a blank type supplied in
1265 RESULT_TYPE, or creating a new type, inheriting the objfile from
1268 Elements will be of type ELEMENT_TYPE, the indices will be of type
1271 BYTE_STRIDE_PROP, when not NULL, provides the array's byte stride.
1272 This byte stride property is added to the resulting array type
1273 as a DYN_PROP_BYTE_STRIDE. As a consequence, the BYTE_STRIDE_PROP
1274 argument can only be used to create types that are objfile-owned
1275 (see add_dyn_prop), meaning that either this function must be called
1276 with an objfile-owned RESULT_TYPE, or an objfile-owned RANGE_TYPE.
1278 BIT_STRIDE is taken into account only when BYTE_STRIDE_PROP is NULL.
1279 If BIT_STRIDE is not zero, build a packed array type whose element
1280 size is BIT_STRIDE. Otherwise, ignore this parameter.
1282 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
1283 sure it is TYPE_CODE_UNDEF before we bash it into an array
1287 create_array_type_with_stride (struct type
*result_type
,
1288 struct type
*element_type
,
1289 struct type
*range_type
,
1290 struct dynamic_prop
*byte_stride_prop
,
1291 unsigned int bit_stride
)
1293 if (byte_stride_prop
!= NULL
1294 && byte_stride_prop
->kind () == PROP_CONST
)
1296 /* The byte stride is actually not dynamic. Pretend we were
1297 called with bit_stride set instead of byte_stride_prop.
1298 This will give us the same result type, while avoiding
1299 the need to handle this as a special case. */
1300 bit_stride
= byte_stride_prop
->const_val () * 8;
1301 byte_stride_prop
= NULL
;
1304 if (result_type
== NULL
)
1305 result_type
= alloc_type_copy (range_type
);
1307 result_type
->set_code (TYPE_CODE_ARRAY
);
1308 TYPE_TARGET_TYPE (result_type
) = element_type
;
1310 result_type
->set_num_fields (1);
1311 result_type
->set_fields
1312 ((struct field
*) TYPE_ZALLOC (result_type
, sizeof (struct field
)));
1313 result_type
->set_index_type (range_type
);
1314 if (byte_stride_prop
!= NULL
)
1315 result_type
->add_dyn_prop (DYN_PROP_BYTE_STRIDE
, *byte_stride_prop
);
1316 else if (bit_stride
> 0)
1317 TYPE_FIELD_BITSIZE (result_type
, 0) = bit_stride
;
1319 if (!update_static_array_size (result_type
))
1321 /* This type is dynamic and its length needs to be computed
1322 on demand. In the meantime, avoid leaving the TYPE_LENGTH
1323 undefined by setting it to zero. Although we are not expected
1324 to trust TYPE_LENGTH in this case, setting the size to zero
1325 allows us to avoid allocating objects of random sizes in case
1326 we accidently do. */
1327 TYPE_LENGTH (result_type
) = 0;
1330 /* TYPE_TARGET_STUB will take care of zero length arrays. */
1331 if (TYPE_LENGTH (result_type
) == 0)
1332 result_type
->set_target_is_stub (true);
1337 /* Same as create_array_type_with_stride but with no bit_stride
1338 (BIT_STRIDE = 0), thus building an unpacked array. */
1341 create_array_type (struct type
*result_type
,
1342 struct type
*element_type
,
1343 struct type
*range_type
)
1345 return create_array_type_with_stride (result_type
, element_type
,
1346 range_type
, NULL
, 0);
1350 lookup_array_range_type (struct type
*element_type
,
1351 LONGEST low_bound
, LONGEST high_bound
)
1353 struct type
*index_type
;
1354 struct type
*range_type
;
1356 if (TYPE_OBJFILE_OWNED (element_type
))
1357 index_type
= objfile_type (TYPE_OWNER (element_type
).objfile
)->builtin_int
;
1359 index_type
= builtin_type (get_type_arch (element_type
))->builtin_int
;
1360 range_type
= create_static_range_type (NULL
, index_type
,
1361 low_bound
, high_bound
);
1363 return create_array_type (NULL
, element_type
, range_type
);
1366 /* Create a string type using either a blank type supplied in
1367 RESULT_TYPE, or creating a new type. String types are similar
1368 enough to array of char types that we can use create_array_type to
1369 build the basic type and then bash it into a string type.
1371 For fixed length strings, the range type contains 0 as the lower
1372 bound and the length of the string minus one as the upper bound.
1374 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
1375 sure it is TYPE_CODE_UNDEF before we bash it into a string
1379 create_string_type (struct type
*result_type
,
1380 struct type
*string_char_type
,
1381 struct type
*range_type
)
1383 result_type
= create_array_type (result_type
,
1386 result_type
->set_code (TYPE_CODE_STRING
);
1391 lookup_string_range_type (struct type
*string_char_type
,
1392 LONGEST low_bound
, LONGEST high_bound
)
1394 struct type
*result_type
;
1396 result_type
= lookup_array_range_type (string_char_type
,
1397 low_bound
, high_bound
);
1398 result_type
->set_code (TYPE_CODE_STRING
);
1403 create_set_type (struct type
*result_type
, struct type
*domain_type
)
1405 if (result_type
== NULL
)
1406 result_type
= alloc_type_copy (domain_type
);
1408 result_type
->set_code (TYPE_CODE_SET
);
1409 result_type
->set_num_fields (1);
1410 result_type
->set_fields
1411 ((struct field
*) TYPE_ZALLOC (result_type
, sizeof (struct field
)));
1413 if (!domain_type
->is_stub ())
1415 LONGEST low_bound
, high_bound
, bit_length
;
1417 if (get_discrete_bounds (domain_type
, &low_bound
, &high_bound
) < 0)
1418 low_bound
= high_bound
= 0;
1419 bit_length
= high_bound
- low_bound
+ 1;
1420 TYPE_LENGTH (result_type
)
1421 = (bit_length
+ TARGET_CHAR_BIT
- 1) / TARGET_CHAR_BIT
;
1423 result_type
->set_is_unsigned (true);
1425 result_type
->field (0).set_type (domain_type
);
1430 /* Convert ARRAY_TYPE to a vector type. This may modify ARRAY_TYPE
1431 and any array types nested inside it. */
1434 make_vector_type (struct type
*array_type
)
1436 struct type
*inner_array
, *elt_type
;
1438 /* Find the innermost array type, in case the array is
1439 multi-dimensional. */
1440 inner_array
= array_type
;
1441 while (TYPE_TARGET_TYPE (inner_array
)->code () == TYPE_CODE_ARRAY
)
1442 inner_array
= TYPE_TARGET_TYPE (inner_array
);
1444 elt_type
= TYPE_TARGET_TYPE (inner_array
);
1445 if (elt_type
->code () == TYPE_CODE_INT
)
1447 type_instance_flags flags
1448 = elt_type
->instance_flags () | TYPE_INSTANCE_FLAG_NOTTEXT
;
1449 elt_type
= make_qualified_type (elt_type
, flags
, NULL
);
1450 TYPE_TARGET_TYPE (inner_array
) = elt_type
;
1453 array_type
->set_is_vector (true);
1457 init_vector_type (struct type
*elt_type
, int n
)
1459 struct type
*array_type
;
1461 array_type
= lookup_array_range_type (elt_type
, 0, n
- 1);
1462 make_vector_type (array_type
);
1466 /* Internal routine called by TYPE_SELF_TYPE to return the type that TYPE
1467 belongs to. In c++ this is the class of "this", but TYPE_THIS_TYPE is too
1468 confusing. "self" is a common enough replacement for "this".
1469 TYPE must be one of TYPE_CODE_METHODPTR, TYPE_CODE_MEMBERPTR, or
1470 TYPE_CODE_METHOD. */
1473 internal_type_self_type (struct type
*type
)
1475 switch (type
->code ())
1477 case TYPE_CODE_METHODPTR
:
1478 case TYPE_CODE_MEMBERPTR
:
1479 if (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_NONE
)
1481 gdb_assert (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_SELF_TYPE
);
1482 return TYPE_MAIN_TYPE (type
)->type_specific
.self_type
;
1483 case TYPE_CODE_METHOD
:
1484 if (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_NONE
)
1486 gdb_assert (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_FUNC
);
1487 return TYPE_MAIN_TYPE (type
)->type_specific
.func_stuff
->self_type
;
1489 gdb_assert_not_reached ("bad type");
1493 /* Set the type of the class that TYPE belongs to.
1494 In c++ this is the class of "this".
1495 TYPE must be one of TYPE_CODE_METHODPTR, TYPE_CODE_MEMBERPTR, or
1496 TYPE_CODE_METHOD. */
1499 set_type_self_type (struct type
*type
, struct type
*self_type
)
1501 switch (type
->code ())
1503 case TYPE_CODE_METHODPTR
:
1504 case TYPE_CODE_MEMBERPTR
:
1505 if (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_NONE
)
1506 TYPE_SPECIFIC_FIELD (type
) = TYPE_SPECIFIC_SELF_TYPE
;
1507 gdb_assert (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_SELF_TYPE
);
1508 TYPE_MAIN_TYPE (type
)->type_specific
.self_type
= self_type
;
1510 case TYPE_CODE_METHOD
:
1511 if (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_NONE
)
1512 INIT_FUNC_SPECIFIC (type
);
1513 gdb_assert (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_FUNC
);
1514 TYPE_MAIN_TYPE (type
)->type_specific
.func_stuff
->self_type
= self_type
;
1517 gdb_assert_not_reached ("bad type");
1521 /* Smash TYPE to be a type of pointers to members of SELF_TYPE with type
1522 TO_TYPE. A member pointer is a wierd thing -- it amounts to a
1523 typed offset into a struct, e.g. "an int at offset 8". A MEMBER
1524 TYPE doesn't include the offset (that's the value of the MEMBER
1525 itself), but does include the structure type into which it points
1528 When "smashing" the type, we preserve the objfile that the old type
1529 pointed to, since we aren't changing where the type is actually
1533 smash_to_memberptr_type (struct type
*type
, struct type
*self_type
,
1534 struct type
*to_type
)
1537 type
->set_code (TYPE_CODE_MEMBERPTR
);
1538 TYPE_TARGET_TYPE (type
) = to_type
;
1539 set_type_self_type (type
, self_type
);
1540 /* Assume that a data member pointer is the same size as a normal
1543 = gdbarch_ptr_bit (get_type_arch (to_type
)) / TARGET_CHAR_BIT
;
1546 /* Smash TYPE to be a type of pointer to methods type TO_TYPE.
1548 When "smashing" the type, we preserve the objfile that the old type
1549 pointed to, since we aren't changing where the type is actually
1553 smash_to_methodptr_type (struct type
*type
, struct type
*to_type
)
1556 type
->set_code (TYPE_CODE_METHODPTR
);
1557 TYPE_TARGET_TYPE (type
) = to_type
;
1558 set_type_self_type (type
, TYPE_SELF_TYPE (to_type
));
1559 TYPE_LENGTH (type
) = cplus_method_ptr_size (to_type
);
1562 /* Smash TYPE to be a type of method of SELF_TYPE with type TO_TYPE.
1563 METHOD just means `function that gets an extra "this" argument'.
1565 When "smashing" the type, we preserve the objfile that the old type
1566 pointed to, since we aren't changing where the type is actually
1570 smash_to_method_type (struct type
*type
, struct type
*self_type
,
1571 struct type
*to_type
, struct field
*args
,
1572 int nargs
, int varargs
)
1575 type
->set_code (TYPE_CODE_METHOD
);
1576 TYPE_TARGET_TYPE (type
) = to_type
;
1577 set_type_self_type (type
, self_type
);
1578 type
->set_fields (args
);
1579 type
->set_num_fields (nargs
);
1581 type
->set_has_varargs (true);
1582 TYPE_LENGTH (type
) = 1; /* In practice, this is never needed. */
1585 /* A wrapper of TYPE_NAME which calls error if the type is anonymous.
1586 Since GCC PR debug/47510 DWARF provides associated information to detect the
1587 anonymous class linkage name from its typedef.
1589 Parameter TYPE should not yet have CHECK_TYPEDEF applied, this function will
1593 type_name_or_error (struct type
*type
)
1595 struct type
*saved_type
= type
;
1597 struct objfile
*objfile
;
1599 type
= check_typedef (type
);
1601 name
= type
->name ();
1605 name
= saved_type
->name ();
1606 objfile
= TYPE_OBJFILE (saved_type
);
1607 error (_("Invalid anonymous type %s [in module %s], GCC PR debug/47510 bug?"),
1608 name
? name
: "<anonymous>",
1609 objfile
? objfile_name (objfile
) : "<arch>");
1612 /* Lookup a typedef or primitive type named NAME, visible in lexical
1613 block BLOCK. If NOERR is nonzero, return zero if NAME is not
1614 suitably defined. */
1617 lookup_typename (const struct language_defn
*language
,
1619 const struct block
*block
, int noerr
)
1623 sym
= lookup_symbol_in_language (name
, block
, VAR_DOMAIN
,
1624 language
->la_language
, NULL
).symbol
;
1625 if (sym
!= NULL
&& SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
1626 return SYMBOL_TYPE (sym
);
1630 error (_("No type named %s."), name
);
1634 lookup_unsigned_typename (const struct language_defn
*language
,
1637 char *uns
= (char *) alloca (strlen (name
) + 10);
1639 strcpy (uns
, "unsigned ");
1640 strcpy (uns
+ 9, name
);
1641 return lookup_typename (language
, uns
, NULL
, 0);
1645 lookup_signed_typename (const struct language_defn
*language
, const char *name
)
1648 char *uns
= (char *) alloca (strlen (name
) + 8);
1650 strcpy (uns
, "signed ");
1651 strcpy (uns
+ 7, name
);
1652 t
= lookup_typename (language
, uns
, NULL
, 1);
1653 /* If we don't find "signed FOO" just try again with plain "FOO". */
1656 return lookup_typename (language
, name
, NULL
, 0);
1659 /* Lookup a structure type named "struct NAME",
1660 visible in lexical block BLOCK. */
1663 lookup_struct (const char *name
, const struct block
*block
)
1667 sym
= lookup_symbol (name
, block
, STRUCT_DOMAIN
, 0).symbol
;
1671 error (_("No struct type named %s."), name
);
1673 if (SYMBOL_TYPE (sym
)->code () != TYPE_CODE_STRUCT
)
1675 error (_("This context has class, union or enum %s, not a struct."),
1678 return (SYMBOL_TYPE (sym
));
1681 /* Lookup a union type named "union NAME",
1682 visible in lexical block BLOCK. */
1685 lookup_union (const char *name
, const struct block
*block
)
1690 sym
= lookup_symbol (name
, block
, STRUCT_DOMAIN
, 0).symbol
;
1693 error (_("No union type named %s."), name
);
1695 t
= SYMBOL_TYPE (sym
);
1697 if (t
->code () == TYPE_CODE_UNION
)
1700 /* If we get here, it's not a union. */
1701 error (_("This context has class, struct or enum %s, not a union."),
1705 /* Lookup an enum type named "enum NAME",
1706 visible in lexical block BLOCK. */
1709 lookup_enum (const char *name
, const struct block
*block
)
1713 sym
= lookup_symbol (name
, block
, STRUCT_DOMAIN
, 0).symbol
;
1716 error (_("No enum type named %s."), name
);
1718 if (SYMBOL_TYPE (sym
)->code () != TYPE_CODE_ENUM
)
1720 error (_("This context has class, struct or union %s, not an enum."),
1723 return (SYMBOL_TYPE (sym
));
1726 /* Lookup a template type named "template NAME<TYPE>",
1727 visible in lexical block BLOCK. */
1730 lookup_template_type (const char *name
, struct type
*type
,
1731 const struct block
*block
)
1734 char *nam
= (char *)
1735 alloca (strlen (name
) + strlen (type
->name ()) + 4);
1739 strcat (nam
, type
->name ());
1740 strcat (nam
, " >"); /* FIXME, extra space still introduced in gcc? */
1742 sym
= lookup_symbol (nam
, block
, VAR_DOMAIN
, 0).symbol
;
1746 error (_("No template type named %s."), name
);
1748 if (SYMBOL_TYPE (sym
)->code () != TYPE_CODE_STRUCT
)
1750 error (_("This context has class, union or enum %s, not a struct."),
1753 return (SYMBOL_TYPE (sym
));
1756 /* See gdbtypes.h. */
1759 lookup_struct_elt (struct type
*type
, const char *name
, int noerr
)
1765 type
= check_typedef (type
);
1766 if (type
->code () != TYPE_CODE_PTR
1767 && type
->code () != TYPE_CODE_REF
)
1769 type
= TYPE_TARGET_TYPE (type
);
1772 if (type
->code () != TYPE_CODE_STRUCT
1773 && type
->code () != TYPE_CODE_UNION
)
1775 std::string type_name
= type_to_string (type
);
1776 error (_("Type %s is not a structure or union type."),
1777 type_name
.c_str ());
1780 for (i
= type
->num_fields () - 1; i
>= TYPE_N_BASECLASSES (type
); i
--)
1782 const char *t_field_name
= TYPE_FIELD_NAME (type
, i
);
1784 if (t_field_name
&& (strcmp_iw (t_field_name
, name
) == 0))
1786 return {&type
->field (i
), TYPE_FIELD_BITPOS (type
, i
)};
1788 else if (!t_field_name
|| *t_field_name
== '\0')
1791 = lookup_struct_elt (type
->field (i
).type (), name
, 1);
1792 if (elt
.field
!= NULL
)
1794 elt
.offset
+= TYPE_FIELD_BITPOS (type
, i
);
1800 /* OK, it's not in this class. Recursively check the baseclasses. */
1801 for (i
= TYPE_N_BASECLASSES (type
) - 1; i
>= 0; i
--)
1803 struct_elt elt
= lookup_struct_elt (TYPE_BASECLASS (type
, i
), name
, 1);
1804 if (elt
.field
!= NULL
)
1809 return {nullptr, 0};
1811 std::string type_name
= type_to_string (type
);
1812 error (_("Type %s has no component named %s."), type_name
.c_str (), name
);
1815 /* See gdbtypes.h. */
1818 lookup_struct_elt_type (struct type
*type
, const char *name
, int noerr
)
1820 struct_elt elt
= lookup_struct_elt (type
, name
, noerr
);
1821 if (elt
.field
!= NULL
)
1822 return elt
.field
->type ();
1827 /* Store in *MAX the largest number representable by unsigned integer type
1831 get_unsigned_type_max (struct type
*type
, ULONGEST
*max
)
1835 type
= check_typedef (type
);
1836 gdb_assert (type
->code () == TYPE_CODE_INT
&& type
->is_unsigned ());
1837 gdb_assert (TYPE_LENGTH (type
) <= sizeof (ULONGEST
));
1839 /* Written this way to avoid overflow. */
1840 n
= TYPE_LENGTH (type
) * TARGET_CHAR_BIT
;
1841 *max
= ((((ULONGEST
) 1 << (n
- 1)) - 1) << 1) | 1;
1844 /* Store in *MIN, *MAX the smallest and largest numbers representable by
1845 signed integer type TYPE. */
1848 get_signed_type_minmax (struct type
*type
, LONGEST
*min
, LONGEST
*max
)
1852 type
= check_typedef (type
);
1853 gdb_assert (type
->code () == TYPE_CODE_INT
&& !type
->is_unsigned ());
1854 gdb_assert (TYPE_LENGTH (type
) <= sizeof (LONGEST
));
1856 n
= TYPE_LENGTH (type
) * TARGET_CHAR_BIT
;
1857 *min
= -((ULONGEST
) 1 << (n
- 1));
1858 *max
= ((ULONGEST
) 1 << (n
- 1)) - 1;
1861 /* Internal routine called by TYPE_VPTR_FIELDNO to return the value of
1862 cplus_stuff.vptr_fieldno.
1864 cplus_stuff is initialized to cplus_struct_default which does not
1865 set vptr_fieldno to -1 for portability reasons (IWBN to use C99
1866 designated initializers). We cope with that here. */
1869 internal_type_vptr_fieldno (struct type
*type
)
1871 type
= check_typedef (type
);
1872 gdb_assert (type
->code () == TYPE_CODE_STRUCT
1873 || type
->code () == TYPE_CODE_UNION
);
1874 if (!HAVE_CPLUS_STRUCT (type
))
1876 return TYPE_RAW_CPLUS_SPECIFIC (type
)->vptr_fieldno
;
1879 /* Set the value of cplus_stuff.vptr_fieldno. */
1882 set_type_vptr_fieldno (struct type
*type
, int fieldno
)
1884 type
= check_typedef (type
);
1885 gdb_assert (type
->code () == TYPE_CODE_STRUCT
1886 || type
->code () == TYPE_CODE_UNION
);
1887 if (!HAVE_CPLUS_STRUCT (type
))
1888 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
1889 TYPE_RAW_CPLUS_SPECIFIC (type
)->vptr_fieldno
= fieldno
;
1892 /* Internal routine called by TYPE_VPTR_BASETYPE to return the value of
1893 cplus_stuff.vptr_basetype. */
1896 internal_type_vptr_basetype (struct type
*type
)
1898 type
= check_typedef (type
);
1899 gdb_assert (type
->code () == TYPE_CODE_STRUCT
1900 || type
->code () == TYPE_CODE_UNION
);
1901 gdb_assert (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_CPLUS_STUFF
);
1902 return TYPE_RAW_CPLUS_SPECIFIC (type
)->vptr_basetype
;
1905 /* Set the value of cplus_stuff.vptr_basetype. */
1908 set_type_vptr_basetype (struct type
*type
, struct type
*basetype
)
1910 type
= check_typedef (type
);
1911 gdb_assert (type
->code () == TYPE_CODE_STRUCT
1912 || type
->code () == TYPE_CODE_UNION
);
1913 if (!HAVE_CPLUS_STRUCT (type
))
1914 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
1915 TYPE_RAW_CPLUS_SPECIFIC (type
)->vptr_basetype
= basetype
;
1918 /* Lookup the vptr basetype/fieldno values for TYPE.
1919 If found store vptr_basetype in *BASETYPEP if non-NULL, and return
1920 vptr_fieldno. Also, if found and basetype is from the same objfile,
1922 If not found, return -1 and ignore BASETYPEP.
1923 Callers should be aware that in some cases (for example,
1924 the type or one of its baseclasses is a stub type and we are
1925 debugging a .o file, or the compiler uses DWARF-2 and is not GCC),
1926 this function will not be able to find the
1927 virtual function table pointer, and vptr_fieldno will remain -1 and
1928 vptr_basetype will remain NULL or incomplete. */
1931 get_vptr_fieldno (struct type
*type
, struct type
**basetypep
)
1933 type
= check_typedef (type
);
1935 if (TYPE_VPTR_FIELDNO (type
) < 0)
1939 /* We must start at zero in case the first (and only) baseclass
1940 is virtual (and hence we cannot share the table pointer). */
1941 for (i
= 0; i
< TYPE_N_BASECLASSES (type
); i
++)
1943 struct type
*baseclass
= check_typedef (TYPE_BASECLASS (type
, i
));
1945 struct type
*basetype
;
1947 fieldno
= get_vptr_fieldno (baseclass
, &basetype
);
1950 /* If the type comes from a different objfile we can't cache
1951 it, it may have a different lifetime. PR 2384 */
1952 if (TYPE_OBJFILE (type
) == TYPE_OBJFILE (basetype
))
1954 set_type_vptr_fieldno (type
, fieldno
);
1955 set_type_vptr_basetype (type
, basetype
);
1958 *basetypep
= basetype
;
1969 *basetypep
= TYPE_VPTR_BASETYPE (type
);
1970 return TYPE_VPTR_FIELDNO (type
);
1975 stub_noname_complaint (void)
1977 complaint (_("stub type has NULL name"));
1980 /* Return nonzero if TYPE has a DYN_PROP_BYTE_STRIDE dynamic property
1981 attached to it, and that property has a non-constant value. */
1984 array_type_has_dynamic_stride (struct type
*type
)
1986 struct dynamic_prop
*prop
= type
->dyn_prop (DYN_PROP_BYTE_STRIDE
);
1988 return (prop
!= NULL
&& prop
->kind () != PROP_CONST
);
1991 /* Worker for is_dynamic_type. */
1994 is_dynamic_type_internal (struct type
*type
, int top_level
)
1996 type
= check_typedef (type
);
1998 /* We only want to recognize references at the outermost level. */
1999 if (top_level
&& type
->code () == TYPE_CODE_REF
)
2000 type
= check_typedef (TYPE_TARGET_TYPE (type
));
2002 /* Types that have a dynamic TYPE_DATA_LOCATION are considered
2003 dynamic, even if the type itself is statically defined.
2004 From a user's point of view, this may appear counter-intuitive;
2005 but it makes sense in this context, because the point is to determine
2006 whether any part of the type needs to be resolved before it can
2008 if (TYPE_DATA_LOCATION (type
) != NULL
2009 && (TYPE_DATA_LOCATION_KIND (type
) == PROP_LOCEXPR
2010 || TYPE_DATA_LOCATION_KIND (type
) == PROP_LOCLIST
))
2013 if (TYPE_ASSOCIATED_PROP (type
))
2016 if (TYPE_ALLOCATED_PROP (type
))
2019 struct dynamic_prop
*prop
= type
->dyn_prop (DYN_PROP_VARIANT_PARTS
);
2020 if (prop
!= nullptr && prop
->kind () != PROP_TYPE
)
2023 if (TYPE_HAS_DYNAMIC_LENGTH (type
))
2026 switch (type
->code ())
2028 case TYPE_CODE_RANGE
:
2030 /* A range type is obviously dynamic if it has at least one
2031 dynamic bound. But also consider the range type to be
2032 dynamic when its subtype is dynamic, even if the bounds
2033 of the range type are static. It allows us to assume that
2034 the subtype of a static range type is also static. */
2035 return (!has_static_range (type
->bounds ())
2036 || is_dynamic_type_internal (TYPE_TARGET_TYPE (type
), 0));
2039 case TYPE_CODE_STRING
:
2040 /* Strings are very much like an array of characters, and can be
2041 treated as one here. */
2042 case TYPE_CODE_ARRAY
:
2044 gdb_assert (type
->num_fields () == 1);
2046 /* The array is dynamic if either the bounds are dynamic... */
2047 if (is_dynamic_type_internal (type
->index_type (), 0))
2049 /* ... or the elements it contains have a dynamic contents... */
2050 if (is_dynamic_type_internal (TYPE_TARGET_TYPE (type
), 0))
2052 /* ... or if it has a dynamic stride... */
2053 if (array_type_has_dynamic_stride (type
))
2058 case TYPE_CODE_STRUCT
:
2059 case TYPE_CODE_UNION
:
2063 bool is_cplus
= HAVE_CPLUS_STRUCT (type
);
2065 for (i
= 0; i
< type
->num_fields (); ++i
)
2067 /* Static fields can be ignored here. */
2068 if (field_is_static (&type
->field (i
)))
2070 /* If the field has dynamic type, then so does TYPE. */
2071 if (is_dynamic_type_internal (type
->field (i
).type (), 0))
2073 /* If the field is at a fixed offset, then it is not
2075 if (TYPE_FIELD_LOC_KIND (type
, i
) != FIELD_LOC_KIND_DWARF_BLOCK
)
2077 /* Do not consider C++ virtual base types to be dynamic
2078 due to the field's offset being dynamic; these are
2079 handled via other means. */
2080 if (is_cplus
&& BASETYPE_VIA_VIRTUAL (type
, i
))
2091 /* See gdbtypes.h. */
2094 is_dynamic_type (struct type
*type
)
2096 return is_dynamic_type_internal (type
, 1);
2099 static struct type
*resolve_dynamic_type_internal
2100 (struct type
*type
, struct property_addr_info
*addr_stack
, int top_level
);
2102 /* Given a dynamic range type (dyn_range_type) and a stack of
2103 struct property_addr_info elements, return a static version
2106 static struct type
*
2107 resolve_dynamic_range (struct type
*dyn_range_type
,
2108 struct property_addr_info
*addr_stack
)
2111 struct type
*static_range_type
, *static_target_type
;
2112 struct dynamic_prop low_bound
, high_bound
, stride
;
2114 gdb_assert (dyn_range_type
->code () == TYPE_CODE_RANGE
);
2116 const struct dynamic_prop
*prop
= &dyn_range_type
->bounds ()->low
;
2117 if (dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2118 low_bound
.set_const_val (value
);
2120 low_bound
.set_undefined ();
2122 prop
= &dyn_range_type
->bounds ()->high
;
2123 if (dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2125 high_bound
.set_const_val (value
);
2127 if (dyn_range_type
->bounds ()->flag_upper_bound_is_count
)
2128 high_bound
.set_const_val
2129 (low_bound
.const_val () + high_bound
.const_val () - 1);
2132 high_bound
.set_undefined ();
2134 bool byte_stride_p
= dyn_range_type
->bounds ()->flag_is_byte_stride
;
2135 prop
= &dyn_range_type
->bounds ()->stride
;
2136 if (dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2138 stride
.set_const_val (value
);
2140 /* If we have a bit stride that is not an exact number of bytes then
2141 I really don't think this is going to work with current GDB, the
2142 array indexing code in GDB seems to be pretty heavily tied to byte
2143 offsets right now. Assuming 8 bits in a byte. */
2144 struct gdbarch
*gdbarch
= get_type_arch (dyn_range_type
);
2145 int unit_size
= gdbarch_addressable_memory_unit_size (gdbarch
);
2146 if (!byte_stride_p
&& (value
% (unit_size
* 8)) != 0)
2147 error (_("bit strides that are not a multiple of the byte size "
2148 "are currently not supported"));
2152 stride
.set_undefined ();
2153 byte_stride_p
= true;
2157 = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (dyn_range_type
),
2159 LONGEST bias
= dyn_range_type
->bounds ()->bias
;
2160 static_range_type
= create_range_type_with_stride
2161 (copy_type (dyn_range_type
), static_target_type
,
2162 &low_bound
, &high_bound
, bias
, &stride
, byte_stride_p
);
2163 static_range_type
->bounds ()->flag_bound_evaluated
= 1;
2164 return static_range_type
;
2167 /* Resolves dynamic bound values of an array or string type TYPE to static
2168 ones. ADDR_STACK is a stack of struct property_addr_info to be used if
2169 needed during the dynamic resolution. */
2171 static struct type
*
2172 resolve_dynamic_array_or_string (struct type
*type
,
2173 struct property_addr_info
*addr_stack
)
2176 struct type
*elt_type
;
2177 struct type
*range_type
;
2178 struct type
*ary_dim
;
2179 struct dynamic_prop
*prop
;
2180 unsigned int bit_stride
= 0;
2182 /* For dynamic type resolution strings can be treated like arrays of
2184 gdb_assert (type
->code () == TYPE_CODE_ARRAY
2185 || type
->code () == TYPE_CODE_STRING
);
2187 type
= copy_type (type
);
2190 range_type
= check_typedef (elt_type
->index_type ());
2191 range_type
= resolve_dynamic_range (range_type
, addr_stack
);
2193 /* Resolve allocated/associated here before creating a new array type, which
2194 will update the length of the array accordingly. */
2195 prop
= TYPE_ALLOCATED_PROP (type
);
2196 if (prop
!= NULL
&& dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2197 prop
->set_const_val (value
);
2199 prop
= TYPE_ASSOCIATED_PROP (type
);
2200 if (prop
!= NULL
&& dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2201 prop
->set_const_val (value
);
2203 ary_dim
= check_typedef (TYPE_TARGET_TYPE (elt_type
));
2205 if (ary_dim
!= NULL
&& ary_dim
->code () == TYPE_CODE_ARRAY
)
2206 elt_type
= resolve_dynamic_array_or_string (ary_dim
, addr_stack
);
2208 elt_type
= TYPE_TARGET_TYPE (type
);
2210 prop
= type
->dyn_prop (DYN_PROP_BYTE_STRIDE
);
2213 if (dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2215 type
->remove_dyn_prop (DYN_PROP_BYTE_STRIDE
);
2216 bit_stride
= (unsigned int) (value
* 8);
2220 /* Could be a bug in our code, but it could also happen
2221 if the DWARF info is not correct. Issue a warning,
2222 and assume no byte/bit stride (leave bit_stride = 0). */
2223 warning (_("cannot determine array stride for type %s"),
2224 type
->name () ? type
->name () : "<no name>");
2228 bit_stride
= TYPE_FIELD_BITSIZE (type
, 0);
2230 return create_array_type_with_stride (type
, elt_type
, range_type
, NULL
,
2234 /* Resolve dynamic bounds of members of the union TYPE to static
2235 bounds. ADDR_STACK is a stack of struct property_addr_info
2236 to be used if needed during the dynamic resolution. */
2238 static struct type
*
2239 resolve_dynamic_union (struct type
*type
,
2240 struct property_addr_info
*addr_stack
)
2242 struct type
*resolved_type
;
2244 unsigned int max_len
= 0;
2246 gdb_assert (type
->code () == TYPE_CODE_UNION
);
2248 resolved_type
= copy_type (type
);
2249 resolved_type
->set_fields
2251 TYPE_ALLOC (resolved_type
,
2252 resolved_type
->num_fields () * sizeof (struct field
)));
2253 memcpy (resolved_type
->fields (),
2255 resolved_type
->num_fields () * sizeof (struct field
));
2256 for (i
= 0; i
< resolved_type
->num_fields (); ++i
)
2260 if (field_is_static (&type
->field (i
)))
2263 t
= resolve_dynamic_type_internal (resolved_type
->field (i
).type (),
2265 resolved_type
->field (i
).set_type (t
);
2267 struct type
*real_type
= check_typedef (t
);
2268 if (TYPE_LENGTH (real_type
) > max_len
)
2269 max_len
= TYPE_LENGTH (real_type
);
2272 TYPE_LENGTH (resolved_type
) = max_len
;
2273 return resolved_type
;
2276 /* See gdbtypes.h. */
2279 variant::matches (ULONGEST value
, bool is_unsigned
) const
2281 for (const discriminant_range
&range
: discriminants
)
2282 if (range
.contains (value
, is_unsigned
))
2288 compute_variant_fields_inner (struct type
*type
,
2289 struct property_addr_info
*addr_stack
,
2290 const variant_part
&part
,
2291 std::vector
<bool> &flags
);
2293 /* A helper function to determine which variant fields will be active.
2294 This handles both the variant's direct fields, and any variant
2295 parts embedded in this variant. TYPE is the type we're examining.
2296 ADDR_STACK holds information about the concrete object. VARIANT is
2297 the current variant to be handled. FLAGS is where the results are
2298 stored -- this function sets the Nth element in FLAGS if the
2299 corresponding field is enabled. ENABLED is whether this variant is
2303 compute_variant_fields_recurse (struct type
*type
,
2304 struct property_addr_info
*addr_stack
,
2305 const variant
&variant
,
2306 std::vector
<bool> &flags
,
2309 for (int field
= variant
.first_field
; field
< variant
.last_field
; ++field
)
2310 flags
[field
] = enabled
;
2312 for (const variant_part
&new_part
: variant
.parts
)
2315 compute_variant_fields_inner (type
, addr_stack
, new_part
, flags
);
2318 for (const auto &sub_variant
: new_part
.variants
)
2319 compute_variant_fields_recurse (type
, addr_stack
, sub_variant
,
2325 /* A helper function to determine which variant fields will be active.
2326 This evaluates the discriminant, decides which variant (if any) is
2327 active, and then updates FLAGS to reflect which fields should be
2328 available. TYPE is the type we're examining. ADDR_STACK holds
2329 information about the concrete object. VARIANT is the current
2330 variant to be handled. FLAGS is where the results are stored --
2331 this function sets the Nth element in FLAGS if the corresponding
2332 field is enabled. */
2335 compute_variant_fields_inner (struct type
*type
,
2336 struct property_addr_info
*addr_stack
,
2337 const variant_part
&part
,
2338 std::vector
<bool> &flags
)
2340 /* Evaluate the discriminant. */
2341 gdb::optional
<ULONGEST
> discr_value
;
2342 if (part
.discriminant_index
!= -1)
2344 int idx
= part
.discriminant_index
;
2346 if (TYPE_FIELD_LOC_KIND (type
, idx
) != FIELD_LOC_KIND_BITPOS
)
2347 error (_("Cannot determine struct field location"
2348 " (invalid location kind)"));
2350 if (addr_stack
->valaddr
.data () != NULL
)
2351 discr_value
= unpack_field_as_long (type
, addr_stack
->valaddr
.data (),
2355 CORE_ADDR addr
= (addr_stack
->addr
2356 + (TYPE_FIELD_BITPOS (type
, idx
)
2357 / TARGET_CHAR_BIT
));
2359 LONGEST bitsize
= TYPE_FIELD_BITSIZE (type
, idx
);
2360 LONGEST size
= bitsize
/ 8;
2362 size
= TYPE_LENGTH (type
->field (idx
).type ());
2364 gdb_byte bits
[sizeof (ULONGEST
)];
2365 read_memory (addr
, bits
, size
);
2367 LONGEST bitpos
= (TYPE_FIELD_BITPOS (type
, idx
)
2370 discr_value
= unpack_bits_as_long (type
->field (idx
).type (),
2371 bits
, bitpos
, bitsize
);
2375 /* Go through each variant and see which applies. */
2376 const variant
*default_variant
= nullptr;
2377 const variant
*applied_variant
= nullptr;
2378 for (const auto &variant
: part
.variants
)
2380 if (variant
.is_default ())
2381 default_variant
= &variant
;
2382 else if (discr_value
.has_value ()
2383 && variant
.matches (*discr_value
, part
.is_unsigned
))
2385 applied_variant
= &variant
;
2389 if (applied_variant
== nullptr)
2390 applied_variant
= default_variant
;
2392 for (const auto &variant
: part
.variants
)
2393 compute_variant_fields_recurse (type
, addr_stack
, variant
,
2394 flags
, applied_variant
== &variant
);
2397 /* Determine which variant fields are available in TYPE. The enabled
2398 fields are stored in RESOLVED_TYPE. ADDR_STACK holds information
2399 about the concrete object. PARTS describes the top-level variant
2400 parts for this type. */
2403 compute_variant_fields (struct type
*type
,
2404 struct type
*resolved_type
,
2405 struct property_addr_info
*addr_stack
,
2406 const gdb::array_view
<variant_part
> &parts
)
2408 /* Assume all fields are included by default. */
2409 std::vector
<bool> flags (resolved_type
->num_fields (), true);
2411 /* Now disable fields based on the variants that control them. */
2412 for (const auto &part
: parts
)
2413 compute_variant_fields_inner (type
, addr_stack
, part
, flags
);
2415 resolved_type
->set_num_fields
2416 (std::count (flags
.begin (), flags
.end (), true));
2417 resolved_type
->set_fields
2419 TYPE_ALLOC (resolved_type
,
2420 resolved_type
->num_fields () * sizeof (struct field
)));
2423 for (int i
= 0; i
< type
->num_fields (); ++i
)
2428 resolved_type
->field (out
) = type
->field (i
);
2433 /* Resolve dynamic bounds of members of the struct TYPE to static
2434 bounds. ADDR_STACK is a stack of struct property_addr_info to
2435 be used if needed during the dynamic resolution. */
2437 static struct type
*
2438 resolve_dynamic_struct (struct type
*type
,
2439 struct property_addr_info
*addr_stack
)
2441 struct type
*resolved_type
;
2443 unsigned resolved_type_bit_length
= 0;
2445 gdb_assert (type
->code () == TYPE_CODE_STRUCT
);
2446 gdb_assert (type
->num_fields () > 0);
2448 resolved_type
= copy_type (type
);
2450 dynamic_prop
*variant_prop
= resolved_type
->dyn_prop (DYN_PROP_VARIANT_PARTS
);
2451 if (variant_prop
!= nullptr && variant_prop
->kind () == PROP_VARIANT_PARTS
)
2453 compute_variant_fields (type
, resolved_type
, addr_stack
,
2454 *variant_prop
->variant_parts ());
2455 /* We want to leave the property attached, so that the Rust code
2456 can tell whether the type was originally an enum. */
2457 variant_prop
->set_original_type (type
);
2461 resolved_type
->set_fields
2463 TYPE_ALLOC (resolved_type
,
2464 resolved_type
->num_fields () * sizeof (struct field
)));
2465 memcpy (resolved_type
->fields (),
2467 resolved_type
->num_fields () * sizeof (struct field
));
2470 for (i
= 0; i
< resolved_type
->num_fields (); ++i
)
2472 unsigned new_bit_length
;
2473 struct property_addr_info pinfo
;
2475 if (field_is_static (&resolved_type
->field (i
)))
2478 if (TYPE_FIELD_LOC_KIND (resolved_type
, i
) == FIELD_LOC_KIND_DWARF_BLOCK
)
2480 struct dwarf2_property_baton baton
;
2482 = lookup_pointer_type (resolved_type
->field (i
).type ());
2483 baton
.locexpr
= *TYPE_FIELD_DWARF_BLOCK (resolved_type
, i
);
2485 struct dynamic_prop prop
;
2486 prop
.set_locexpr (&baton
);
2489 if (dwarf2_evaluate_property (&prop
, nullptr, addr_stack
, &addr
,
2491 SET_FIELD_BITPOS (resolved_type
->field (i
),
2492 TARGET_CHAR_BIT
* (addr
- addr_stack
->addr
));
2495 /* As we know this field is not a static field, the field's
2496 field_loc_kind should be FIELD_LOC_KIND_BITPOS. Verify
2497 this is the case, but only trigger a simple error rather
2498 than an internal error if that fails. While failing
2499 that verification indicates a bug in our code, the error
2500 is not severe enough to suggest to the user he stops
2501 his debugging session because of it. */
2502 if (TYPE_FIELD_LOC_KIND (resolved_type
, i
) != FIELD_LOC_KIND_BITPOS
)
2503 error (_("Cannot determine struct field location"
2504 " (invalid location kind)"));
2506 pinfo
.type
= check_typedef (resolved_type
->field (i
).type ());
2507 pinfo
.valaddr
= addr_stack
->valaddr
;
2510 + (TYPE_FIELD_BITPOS (resolved_type
, i
) / TARGET_CHAR_BIT
));
2511 pinfo
.next
= addr_stack
;
2513 resolved_type
->field (i
).set_type
2514 (resolve_dynamic_type_internal (resolved_type
->field (i
).type (),
2516 gdb_assert (TYPE_FIELD_LOC_KIND (resolved_type
, i
)
2517 == FIELD_LOC_KIND_BITPOS
);
2519 new_bit_length
= TYPE_FIELD_BITPOS (resolved_type
, i
);
2520 if (TYPE_FIELD_BITSIZE (resolved_type
, i
) != 0)
2521 new_bit_length
+= TYPE_FIELD_BITSIZE (resolved_type
, i
);
2524 struct type
*real_type
2525 = check_typedef (resolved_type
->field (i
).type ());
2527 new_bit_length
+= (TYPE_LENGTH (real_type
) * TARGET_CHAR_BIT
);
2530 /* Normally, we would use the position and size of the last field
2531 to determine the size of the enclosing structure. But GCC seems
2532 to be encoding the position of some fields incorrectly when
2533 the struct contains a dynamic field that is not placed last.
2534 So we compute the struct size based on the field that has
2535 the highest position + size - probably the best we can do. */
2536 if (new_bit_length
> resolved_type_bit_length
)
2537 resolved_type_bit_length
= new_bit_length
;
2540 /* The length of a type won't change for fortran, but it does for C and Ada.
2541 For fortran the size of dynamic fields might change over time but not the
2542 type length of the structure. If we adapt it, we run into problems
2543 when calculating the element offset for arrays of structs. */
2544 if (current_language
->la_language
!= language_fortran
)
2545 TYPE_LENGTH (resolved_type
)
2546 = (resolved_type_bit_length
+ TARGET_CHAR_BIT
- 1) / TARGET_CHAR_BIT
;
2548 /* The Ada language uses this field as a cache for static fixed types: reset
2549 it as RESOLVED_TYPE must have its own static fixed type. */
2550 TYPE_TARGET_TYPE (resolved_type
) = NULL
;
2552 return resolved_type
;
2555 /* Worker for resolved_dynamic_type. */
2557 static struct type
*
2558 resolve_dynamic_type_internal (struct type
*type
,
2559 struct property_addr_info
*addr_stack
,
2562 struct type
*real_type
= check_typedef (type
);
2563 struct type
*resolved_type
= nullptr;
2564 struct dynamic_prop
*prop
;
2567 if (!is_dynamic_type_internal (real_type
, top_level
))
2570 gdb::optional
<CORE_ADDR
> type_length
;
2571 prop
= TYPE_DYNAMIC_LENGTH (type
);
2573 && dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2574 type_length
= value
;
2576 if (type
->code () == TYPE_CODE_TYPEDEF
)
2578 resolved_type
= copy_type (type
);
2579 TYPE_TARGET_TYPE (resolved_type
)
2580 = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (type
), addr_stack
,
2585 /* Before trying to resolve TYPE, make sure it is not a stub. */
2588 switch (type
->code ())
2592 struct property_addr_info pinfo
;
2594 pinfo
.type
= check_typedef (TYPE_TARGET_TYPE (type
));
2596 if (addr_stack
->valaddr
.data () != NULL
)
2597 pinfo
.addr
= extract_typed_address (addr_stack
->valaddr
.data (),
2600 pinfo
.addr
= read_memory_typed_address (addr_stack
->addr
, type
);
2601 pinfo
.next
= addr_stack
;
2603 resolved_type
= copy_type (type
);
2604 TYPE_TARGET_TYPE (resolved_type
)
2605 = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (type
),
2610 case TYPE_CODE_STRING
:
2611 /* Strings are very much like an array of characters, and can be
2612 treated as one here. */
2613 case TYPE_CODE_ARRAY
:
2614 resolved_type
= resolve_dynamic_array_or_string (type
, addr_stack
);
2617 case TYPE_CODE_RANGE
:
2618 resolved_type
= resolve_dynamic_range (type
, addr_stack
);
2621 case TYPE_CODE_UNION
:
2622 resolved_type
= resolve_dynamic_union (type
, addr_stack
);
2625 case TYPE_CODE_STRUCT
:
2626 resolved_type
= resolve_dynamic_struct (type
, addr_stack
);
2631 if (resolved_type
== nullptr)
2634 if (type_length
.has_value ())
2636 TYPE_LENGTH (resolved_type
) = *type_length
;
2637 resolved_type
->remove_dyn_prop (DYN_PROP_BYTE_SIZE
);
2640 /* Resolve data_location attribute. */
2641 prop
= TYPE_DATA_LOCATION (resolved_type
);
2643 && dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2644 prop
->set_const_val (value
);
2646 return resolved_type
;
2649 /* See gdbtypes.h */
2652 resolve_dynamic_type (struct type
*type
,
2653 gdb::array_view
<const gdb_byte
> valaddr
,
2656 struct property_addr_info pinfo
2657 = {check_typedef (type
), valaddr
, addr
, NULL
};
2659 return resolve_dynamic_type_internal (type
, &pinfo
, 1);
2662 /* See gdbtypes.h */
2665 type::dyn_prop (dynamic_prop_node_kind prop_kind
) const
2667 dynamic_prop_list
*node
= this->main_type
->dyn_prop_list
;
2669 while (node
!= NULL
)
2671 if (node
->prop_kind
== prop_kind
)
2678 /* See gdbtypes.h */
2681 type::add_dyn_prop (dynamic_prop_node_kind prop_kind
, dynamic_prop prop
)
2683 struct dynamic_prop_list
*temp
;
2685 gdb_assert (TYPE_OBJFILE_OWNED (this));
2687 temp
= XOBNEW (&TYPE_OBJFILE (this)->objfile_obstack
,
2688 struct dynamic_prop_list
);
2689 temp
->prop_kind
= prop_kind
;
2691 temp
->next
= this->main_type
->dyn_prop_list
;
2693 this->main_type
->dyn_prop_list
= temp
;
2696 /* See gdbtypes.h. */
2699 type::remove_dyn_prop (dynamic_prop_node_kind kind
)
2701 struct dynamic_prop_list
*prev_node
, *curr_node
;
2703 curr_node
= this->main_type
->dyn_prop_list
;
2706 while (NULL
!= curr_node
)
2708 if (curr_node
->prop_kind
== kind
)
2710 /* Update the linked list but don't free anything.
2711 The property was allocated on objstack and it is not known
2712 if we are on top of it. Nevertheless, everything is released
2713 when the complete objstack is freed. */
2714 if (NULL
== prev_node
)
2715 this->main_type
->dyn_prop_list
= curr_node
->next
;
2717 prev_node
->next
= curr_node
->next
;
2722 prev_node
= curr_node
;
2723 curr_node
= curr_node
->next
;
2727 /* Find the real type of TYPE. This function returns the real type,
2728 after removing all layers of typedefs, and completing opaque or stub
2729 types. Completion changes the TYPE argument, but stripping of
2732 Instance flags (e.g. const/volatile) are preserved as typedefs are
2733 stripped. If necessary a new qualified form of the underlying type
2736 NOTE: This will return a typedef if TYPE_TARGET_TYPE for the typedef has
2737 not been computed and we're either in the middle of reading symbols, or
2738 there was no name for the typedef in the debug info.
2740 NOTE: Lookup of opaque types can throw errors for invalid symbol files.
2741 QUITs in the symbol reading code can also throw.
2742 Thus this function can throw an exception.
2744 If TYPE is a TYPE_CODE_TYPEDEF, its length is updated to the length of
2747 If this is a stubbed struct (i.e. declared as struct foo *), see if
2748 we can find a full definition in some other file. If so, copy this
2749 definition, so we can use it in future. There used to be a comment
2750 (but not any code) that if we don't find a full definition, we'd
2751 set a flag so we don't spend time in the future checking the same
2752 type. That would be a mistake, though--we might load in more
2753 symbols which contain a full definition for the type. */
2756 check_typedef (struct type
*type
)
2758 struct type
*orig_type
= type
;
2762 /* While we're removing typedefs, we don't want to lose qualifiers.
2763 E.g., const/volatile. */
2764 type_instance_flags instance_flags
= type
->instance_flags ();
2766 while (type
->code () == TYPE_CODE_TYPEDEF
)
2768 if (!TYPE_TARGET_TYPE (type
))
2773 /* It is dangerous to call lookup_symbol if we are currently
2774 reading a symtab. Infinite recursion is one danger. */
2775 if (currently_reading_symtab
)
2776 return make_qualified_type (type
, instance_flags
, NULL
);
2778 name
= type
->name ();
2779 /* FIXME: shouldn't we look in STRUCT_DOMAIN and/or
2780 VAR_DOMAIN as appropriate? */
2783 stub_noname_complaint ();
2784 return make_qualified_type (type
, instance_flags
, NULL
);
2786 sym
= lookup_symbol (name
, 0, STRUCT_DOMAIN
, 0).symbol
;
2788 TYPE_TARGET_TYPE (type
) = SYMBOL_TYPE (sym
);
2789 else /* TYPE_CODE_UNDEF */
2790 TYPE_TARGET_TYPE (type
) = alloc_type_arch (get_type_arch (type
));
2792 type
= TYPE_TARGET_TYPE (type
);
2794 /* Preserve the instance flags as we traverse down the typedef chain.
2796 Handling address spaces/classes is nasty, what do we do if there's a
2798 E.g., what if an outer typedef marks the type as class_1 and an inner
2799 typedef marks the type as class_2?
2800 This is the wrong place to do such error checking. We leave it to
2801 the code that created the typedef in the first place to flag the
2802 error. We just pick the outer address space (akin to letting the
2803 outer cast in a chain of casting win), instead of assuming
2804 "it can't happen". */
2806 const type_instance_flags ALL_SPACES
2807 = (TYPE_INSTANCE_FLAG_CODE_SPACE
2808 | TYPE_INSTANCE_FLAG_DATA_SPACE
);
2809 const type_instance_flags ALL_CLASSES
2810 = TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL
;
2812 type_instance_flags new_instance_flags
= type
->instance_flags ();
2814 /* Treat code vs data spaces and address classes separately. */
2815 if ((instance_flags
& ALL_SPACES
) != 0)
2816 new_instance_flags
&= ~ALL_SPACES
;
2817 if ((instance_flags
& ALL_CLASSES
) != 0)
2818 new_instance_flags
&= ~ALL_CLASSES
;
2820 instance_flags
|= new_instance_flags
;
2824 /* If this is a struct/class/union with no fields, then check
2825 whether a full definition exists somewhere else. This is for
2826 systems where a type definition with no fields is issued for such
2827 types, instead of identifying them as stub types in the first
2830 if (TYPE_IS_OPAQUE (type
)
2831 && opaque_type_resolution
2832 && !currently_reading_symtab
)
2834 const char *name
= type
->name ();
2835 struct type
*newtype
;
2839 stub_noname_complaint ();
2840 return make_qualified_type (type
, instance_flags
, NULL
);
2842 newtype
= lookup_transparent_type (name
);
2846 /* If the resolved type and the stub are in the same
2847 objfile, then replace the stub type with the real deal.
2848 But if they're in separate objfiles, leave the stub
2849 alone; we'll just look up the transparent type every time
2850 we call check_typedef. We can't create pointers between
2851 types allocated to different objfiles, since they may
2852 have different lifetimes. Trying to copy NEWTYPE over to
2853 TYPE's objfile is pointless, too, since you'll have to
2854 move over any other types NEWTYPE refers to, which could
2855 be an unbounded amount of stuff. */
2856 if (TYPE_OBJFILE (newtype
) == TYPE_OBJFILE (type
))
2857 type
= make_qualified_type (newtype
, type
->instance_flags (), type
);
2862 /* Otherwise, rely on the stub flag being set for opaque/stubbed
2864 else if (type
->is_stub () && !currently_reading_symtab
)
2866 const char *name
= type
->name ();
2867 /* FIXME: shouldn't we look in STRUCT_DOMAIN and/or VAR_DOMAIN
2873 stub_noname_complaint ();
2874 return make_qualified_type (type
, instance_flags
, NULL
);
2876 sym
= lookup_symbol (name
, 0, STRUCT_DOMAIN
, 0).symbol
;
2879 /* Same as above for opaque types, we can replace the stub
2880 with the complete type only if they are in the same
2882 if (TYPE_OBJFILE (SYMBOL_TYPE (sym
)) == TYPE_OBJFILE (type
))
2883 type
= make_qualified_type (SYMBOL_TYPE (sym
),
2884 type
->instance_flags (), type
);
2886 type
= SYMBOL_TYPE (sym
);
2890 if (type
->target_is_stub ())
2892 struct type
*target_type
= check_typedef (TYPE_TARGET_TYPE (type
));
2894 if (target_type
->is_stub () || target_type
->target_is_stub ())
2896 /* Nothing we can do. */
2898 else if (type
->code () == TYPE_CODE_RANGE
)
2900 TYPE_LENGTH (type
) = TYPE_LENGTH (target_type
);
2901 type
->set_target_is_stub (false);
2903 else if (type
->code () == TYPE_CODE_ARRAY
2904 && update_static_array_size (type
))
2905 type
->set_target_is_stub (false);
2908 type
= make_qualified_type (type
, instance_flags
, NULL
);
2910 /* Cache TYPE_LENGTH for future use. */
2911 TYPE_LENGTH (orig_type
) = TYPE_LENGTH (type
);
2916 /* Parse a type expression in the string [P..P+LENGTH). If an error
2917 occurs, silently return a void type. */
2919 static struct type
*
2920 safe_parse_type (struct gdbarch
*gdbarch
, char *p
, int length
)
2922 struct ui_file
*saved_gdb_stderr
;
2923 struct type
*type
= NULL
; /* Initialize to keep gcc happy. */
2925 /* Suppress error messages. */
2926 saved_gdb_stderr
= gdb_stderr
;
2927 gdb_stderr
= &null_stream
;
2929 /* Call parse_and_eval_type() without fear of longjmp()s. */
2932 type
= parse_and_eval_type (p
, length
);
2934 catch (const gdb_exception_error
&except
)
2936 type
= builtin_type (gdbarch
)->builtin_void
;
2939 /* Stop suppressing error messages. */
2940 gdb_stderr
= saved_gdb_stderr
;
2945 /* Ugly hack to convert method stubs into method types.
2947 He ain't kiddin'. This demangles the name of the method into a
2948 string including argument types, parses out each argument type,
2949 generates a string casting a zero to that type, evaluates the
2950 string, and stuffs the resulting type into an argtype vector!!!
2951 Then it knows the type of the whole function (including argument
2952 types for overloading), which info used to be in the stab's but was
2953 removed to hack back the space required for them. */
2956 check_stub_method (struct type
*type
, int method_id
, int signature_id
)
2958 struct gdbarch
*gdbarch
= get_type_arch (type
);
2960 char *mangled_name
= gdb_mangle_name (type
, method_id
, signature_id
);
2961 char *demangled_name
= gdb_demangle (mangled_name
,
2962 DMGL_PARAMS
| DMGL_ANSI
);
2963 char *argtypetext
, *p
;
2964 int depth
= 0, argcount
= 1;
2965 struct field
*argtypes
;
2968 /* Make sure we got back a function string that we can use. */
2970 p
= strchr (demangled_name
, '(');
2974 if (demangled_name
== NULL
|| p
== NULL
)
2975 error (_("Internal: Cannot demangle mangled name `%s'."),
2978 /* Now, read in the parameters that define this type. */
2983 if (*p
== '(' || *p
== '<')
2987 else if (*p
== ')' || *p
== '>')
2991 else if (*p
== ',' && depth
== 0)
2999 /* If we read one argument and it was ``void'', don't count it. */
3000 if (startswith (argtypetext
, "(void)"))
3003 /* We need one extra slot, for the THIS pointer. */
3005 argtypes
= (struct field
*)
3006 TYPE_ALLOC (type
, (argcount
+ 1) * sizeof (struct field
));
3009 /* Add THIS pointer for non-static methods. */
3010 f
= TYPE_FN_FIELDLIST1 (type
, method_id
);
3011 if (TYPE_FN_FIELD_STATIC_P (f
, signature_id
))
3015 argtypes
[0].set_type (lookup_pointer_type (type
));
3019 if (*p
!= ')') /* () means no args, skip while. */
3024 if (depth
<= 0 && (*p
== ',' || *p
== ')'))
3026 /* Avoid parsing of ellipsis, they will be handled below.
3027 Also avoid ``void'' as above. */
3028 if (strncmp (argtypetext
, "...", p
- argtypetext
) != 0
3029 && strncmp (argtypetext
, "void", p
- argtypetext
) != 0)
3031 argtypes
[argcount
].set_type
3032 (safe_parse_type (gdbarch
, argtypetext
, p
- argtypetext
));
3035 argtypetext
= p
+ 1;
3038 if (*p
== '(' || *p
== '<')
3042 else if (*p
== ')' || *p
== '>')
3051 TYPE_FN_FIELD_PHYSNAME (f
, signature_id
) = mangled_name
;
3053 /* Now update the old "stub" type into a real type. */
3054 mtype
= TYPE_FN_FIELD_TYPE (f
, signature_id
);
3055 /* MTYPE may currently be a function (TYPE_CODE_FUNC).
3056 We want a method (TYPE_CODE_METHOD). */
3057 smash_to_method_type (mtype
, type
, TYPE_TARGET_TYPE (mtype
),
3058 argtypes
, argcount
, p
[-2] == '.');
3059 mtype
->set_is_stub (false);
3060 TYPE_FN_FIELD_STUB (f
, signature_id
) = 0;
3062 xfree (demangled_name
);
3065 /* This is the external interface to check_stub_method, above. This
3066 function unstubs all of the signatures for TYPE's METHOD_ID method
3067 name. After calling this function TYPE_FN_FIELD_STUB will be
3068 cleared for each signature and TYPE_FN_FIELDLIST_NAME will be
3071 This function unfortunately can not die until stabs do. */
3074 check_stub_method_group (struct type
*type
, int method_id
)
3076 int len
= TYPE_FN_FIELDLIST_LENGTH (type
, method_id
);
3077 struct fn_field
*f
= TYPE_FN_FIELDLIST1 (type
, method_id
);
3079 for (int j
= 0; j
< len
; j
++)
3081 if (TYPE_FN_FIELD_STUB (f
, j
))
3082 check_stub_method (type
, method_id
, j
);
3086 /* Ensure it is in .rodata (if available) by working around GCC PR 44690. */
3087 const struct cplus_struct_type cplus_struct_default
= { };
3090 allocate_cplus_struct_type (struct type
*type
)
3092 if (HAVE_CPLUS_STRUCT (type
))
3093 /* Structure was already allocated. Nothing more to do. */
3096 TYPE_SPECIFIC_FIELD (type
) = TYPE_SPECIFIC_CPLUS_STUFF
;
3097 TYPE_RAW_CPLUS_SPECIFIC (type
) = (struct cplus_struct_type
*)
3098 TYPE_ALLOC (type
, sizeof (struct cplus_struct_type
));
3099 *(TYPE_RAW_CPLUS_SPECIFIC (type
)) = cplus_struct_default
;
3100 set_type_vptr_fieldno (type
, -1);
3103 const struct gnat_aux_type gnat_aux_default
=
3106 /* Set the TYPE's type-specific kind to TYPE_SPECIFIC_GNAT_STUFF,
3107 and allocate the associated gnat-specific data. The gnat-specific
3108 data is also initialized to gnat_aux_default. */
3111 allocate_gnat_aux_type (struct type
*type
)
3113 TYPE_SPECIFIC_FIELD (type
) = TYPE_SPECIFIC_GNAT_STUFF
;
3114 TYPE_GNAT_SPECIFIC (type
) = (struct gnat_aux_type
*)
3115 TYPE_ALLOC (type
, sizeof (struct gnat_aux_type
));
3116 *(TYPE_GNAT_SPECIFIC (type
)) = gnat_aux_default
;
3119 /* Helper function to initialize a newly allocated type. Set type code
3120 to CODE and initialize the type-specific fields accordingly. */
3123 set_type_code (struct type
*type
, enum type_code code
)
3125 type
->set_code (code
);
3129 case TYPE_CODE_STRUCT
:
3130 case TYPE_CODE_UNION
:
3131 case TYPE_CODE_NAMESPACE
:
3132 INIT_CPLUS_SPECIFIC (type
);
3135 TYPE_SPECIFIC_FIELD (type
) = TYPE_SPECIFIC_FLOATFORMAT
;
3137 case TYPE_CODE_FUNC
:
3138 INIT_FUNC_SPECIFIC (type
);
3143 /* Helper function to verify floating-point format and size.
3144 BIT is the type size in bits; if BIT equals -1, the size is
3145 determined by the floatformat. Returns size to be used. */
3148 verify_floatformat (int bit
, const struct floatformat
*floatformat
)
3150 gdb_assert (floatformat
!= NULL
);
3153 bit
= floatformat
->totalsize
;
3155 gdb_assert (bit
>= 0);
3156 gdb_assert (bit
>= floatformat
->totalsize
);
3161 /* Return the floating-point format for a floating-point variable of
3164 const struct floatformat
*
3165 floatformat_from_type (const struct type
*type
)
3167 gdb_assert (type
->code () == TYPE_CODE_FLT
);
3168 gdb_assert (TYPE_FLOATFORMAT (type
));
3169 return TYPE_FLOATFORMAT (type
);
3172 /* Helper function to initialize the standard scalar types.
3174 If NAME is non-NULL, then it is used to initialize the type name.
3175 Note that NAME is not copied; it is required to have a lifetime at
3176 least as long as OBJFILE. */
3179 init_type (struct objfile
*objfile
, enum type_code code
, int bit
,
3184 type
= alloc_type (objfile
);
3185 set_type_code (type
, code
);
3186 gdb_assert ((bit
% TARGET_CHAR_BIT
) == 0);
3187 TYPE_LENGTH (type
) = bit
/ TARGET_CHAR_BIT
;
3188 type
->set_name (name
);
3193 /* Allocate a TYPE_CODE_ERROR type structure associated with OBJFILE,
3194 to use with variables that have no debug info. NAME is the type
3197 static struct type
*
3198 init_nodebug_var_type (struct objfile
*objfile
, const char *name
)
3200 return init_type (objfile
, TYPE_CODE_ERROR
, 0, name
);
3203 /* Allocate a TYPE_CODE_INT type structure associated with OBJFILE.
3204 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
3205 the type's TYPE_UNSIGNED flag. NAME is the type name. */
3208 init_integer_type (struct objfile
*objfile
,
3209 int bit
, int unsigned_p
, const char *name
)
3213 t
= init_type (objfile
, TYPE_CODE_INT
, bit
, name
);
3215 t
->set_is_unsigned (true);
3217 TYPE_SPECIFIC_FIELD (t
) = TYPE_SPECIFIC_INT
;
3218 TYPE_MAIN_TYPE (t
)->type_specific
.int_stuff
.bit_size
= bit
;
3219 TYPE_MAIN_TYPE (t
)->type_specific
.int_stuff
.bit_offset
= 0;
3224 /* Allocate a TYPE_CODE_CHAR type structure associated with OBJFILE.
3225 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
3226 the type's TYPE_UNSIGNED flag. NAME is the type name. */
3229 init_character_type (struct objfile
*objfile
,
3230 int bit
, int unsigned_p
, const char *name
)
3234 t
= init_type (objfile
, TYPE_CODE_CHAR
, bit
, name
);
3236 t
->set_is_unsigned (true);
3241 /* Allocate a TYPE_CODE_BOOL type structure associated with OBJFILE.
3242 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
3243 the type's TYPE_UNSIGNED flag. NAME is the type name. */
3246 init_boolean_type (struct objfile
*objfile
,
3247 int bit
, int unsigned_p
, const char *name
)
3251 t
= init_type (objfile
, TYPE_CODE_BOOL
, bit
, name
);
3253 t
->set_is_unsigned (true);
3255 TYPE_SPECIFIC_FIELD (t
) = TYPE_SPECIFIC_INT
;
3256 TYPE_MAIN_TYPE (t
)->type_specific
.int_stuff
.bit_size
= bit
;
3257 TYPE_MAIN_TYPE (t
)->type_specific
.int_stuff
.bit_offset
= 0;
3262 /* Allocate a TYPE_CODE_FLT type structure associated with OBJFILE.
3263 BIT is the type size in bits; if BIT equals -1, the size is
3264 determined by the floatformat. NAME is the type name. Set the
3265 TYPE_FLOATFORMAT from FLOATFORMATS. BYTE_ORDER is the byte order
3266 to use. If it is BFD_ENDIAN_UNKNOWN (the default), then the byte
3267 order of the objfile's architecture is used. */
3270 init_float_type (struct objfile
*objfile
,
3271 int bit
, const char *name
,
3272 const struct floatformat
**floatformats
,
3273 enum bfd_endian byte_order
)
3275 if (byte_order
== BFD_ENDIAN_UNKNOWN
)
3277 struct gdbarch
*gdbarch
= objfile
->arch ();
3278 byte_order
= gdbarch_byte_order (gdbarch
);
3280 const struct floatformat
*fmt
= floatformats
[byte_order
];
3283 bit
= verify_floatformat (bit
, fmt
);
3284 t
= init_type (objfile
, TYPE_CODE_FLT
, bit
, name
);
3285 TYPE_FLOATFORMAT (t
) = fmt
;
3290 /* Allocate a TYPE_CODE_DECFLOAT type structure associated with OBJFILE.
3291 BIT is the type size in bits. NAME is the type name. */
3294 init_decfloat_type (struct objfile
*objfile
, int bit
, const char *name
)
3298 t
= init_type (objfile
, TYPE_CODE_DECFLOAT
, bit
, name
);
3302 /* Allocate a TYPE_CODE_COMPLEX type structure. NAME is the type
3303 name. TARGET_TYPE is the component type. */
3306 init_complex_type (const char *name
, struct type
*target_type
)
3310 gdb_assert (target_type
->code () == TYPE_CODE_INT
3311 || target_type
->code () == TYPE_CODE_FLT
);
3313 if (TYPE_MAIN_TYPE (target_type
)->flds_bnds
.complex_type
== nullptr)
3315 if (name
== nullptr && target_type
->name () != nullptr)
3318 = (char *) TYPE_ALLOC (target_type
,
3319 strlen (target_type
->name ())
3320 + strlen ("_Complex ") + 1);
3321 strcpy (new_name
, "_Complex ");
3322 strcat (new_name
, target_type
->name ());
3326 t
= alloc_type_copy (target_type
);
3327 set_type_code (t
, TYPE_CODE_COMPLEX
);
3328 TYPE_LENGTH (t
) = 2 * TYPE_LENGTH (target_type
);
3331 TYPE_TARGET_TYPE (t
) = target_type
;
3332 TYPE_MAIN_TYPE (target_type
)->flds_bnds
.complex_type
= t
;
3335 return TYPE_MAIN_TYPE (target_type
)->flds_bnds
.complex_type
;
3338 /* Allocate a TYPE_CODE_PTR type structure associated with OBJFILE.
3339 BIT is the pointer type size in bits. NAME is the type name.
3340 TARGET_TYPE is the pointer target type. Always sets the pointer type's
3341 TYPE_UNSIGNED flag. */
3344 init_pointer_type (struct objfile
*objfile
,
3345 int bit
, const char *name
, struct type
*target_type
)
3349 t
= init_type (objfile
, TYPE_CODE_PTR
, bit
, name
);
3350 TYPE_TARGET_TYPE (t
) = target_type
;
3351 t
->set_is_unsigned (true);
3355 /* See gdbtypes.h. */
3358 type_raw_align (struct type
*type
)
3360 if (type
->align_log2
!= 0)
3361 return 1 << (type
->align_log2
- 1);
3365 /* See gdbtypes.h. */
3368 type_align (struct type
*type
)
3370 /* Check alignment provided in the debug information. */
3371 unsigned raw_align
= type_raw_align (type
);
3375 /* Allow the architecture to provide an alignment. */
3376 struct gdbarch
*arch
= get_type_arch (type
);
3377 ULONGEST align
= gdbarch_type_align (arch
, type
);
3381 switch (type
->code ())
3384 case TYPE_CODE_FUNC
:
3385 case TYPE_CODE_FLAGS
:
3387 case TYPE_CODE_RANGE
:
3389 case TYPE_CODE_ENUM
:
3391 case TYPE_CODE_RVALUE_REF
:
3392 case TYPE_CODE_CHAR
:
3393 case TYPE_CODE_BOOL
:
3394 case TYPE_CODE_DECFLOAT
:
3395 case TYPE_CODE_METHODPTR
:
3396 case TYPE_CODE_MEMBERPTR
:
3397 align
= type_length_units (check_typedef (type
));
3400 case TYPE_CODE_ARRAY
:
3401 case TYPE_CODE_COMPLEX
:
3402 case TYPE_CODE_TYPEDEF
:
3403 align
= type_align (TYPE_TARGET_TYPE (type
));
3406 case TYPE_CODE_STRUCT
:
3407 case TYPE_CODE_UNION
:
3409 int number_of_non_static_fields
= 0;
3410 for (unsigned i
= 0; i
< type
->num_fields (); ++i
)
3412 if (!field_is_static (&type
->field (i
)))
3414 number_of_non_static_fields
++;
3415 ULONGEST f_align
= type_align (type
->field (i
).type ());
3418 /* Don't pretend we know something we don't. */
3422 if (f_align
> align
)
3426 /* A struct with no fields, or with only static fields has an
3428 if (number_of_non_static_fields
== 0)
3434 case TYPE_CODE_STRING
:
3435 /* Not sure what to do here, and these can't appear in C or C++
3439 case TYPE_CODE_VOID
:
3443 case TYPE_CODE_ERROR
:
3444 case TYPE_CODE_METHOD
:
3449 if ((align
& (align
- 1)) != 0)
3451 /* Not a power of 2, so pass. */
3458 /* See gdbtypes.h. */
3461 set_type_align (struct type
*type
, ULONGEST align
)
3463 /* Must be a power of 2. Zero is ok. */
3464 gdb_assert ((align
& (align
- 1)) == 0);
3466 unsigned result
= 0;
3473 if (result
>= (1 << TYPE_ALIGN_BITS
))
3476 type
->align_log2
= result
;
3481 /* Queries on types. */
3484 can_dereference (struct type
*t
)
3486 /* FIXME: Should we return true for references as well as
3488 t
= check_typedef (t
);
3491 && t
->code () == TYPE_CODE_PTR
3492 && TYPE_TARGET_TYPE (t
)->code () != TYPE_CODE_VOID
);
3496 is_integral_type (struct type
*t
)
3498 t
= check_typedef (t
);
3501 && ((t
->code () == TYPE_CODE_INT
)
3502 || (t
->code () == TYPE_CODE_ENUM
)
3503 || (t
->code () == TYPE_CODE_FLAGS
)
3504 || (t
->code () == TYPE_CODE_CHAR
)
3505 || (t
->code () == TYPE_CODE_RANGE
)
3506 || (t
->code () == TYPE_CODE_BOOL
)));
3510 is_floating_type (struct type
*t
)
3512 t
= check_typedef (t
);
3515 && ((t
->code () == TYPE_CODE_FLT
)
3516 || (t
->code () == TYPE_CODE_DECFLOAT
)));
3519 /* Return true if TYPE is scalar. */
3522 is_scalar_type (struct type
*type
)
3524 type
= check_typedef (type
);
3526 switch (type
->code ())
3528 case TYPE_CODE_ARRAY
:
3529 case TYPE_CODE_STRUCT
:
3530 case TYPE_CODE_UNION
:
3532 case TYPE_CODE_STRING
:
3539 /* Return true if T is scalar, or a composite type which in practice has
3540 the memory layout of a scalar type. E.g., an array or struct with only
3541 one scalar element inside it, or a union with only scalar elements. */
3544 is_scalar_type_recursive (struct type
*t
)
3546 t
= check_typedef (t
);
3548 if (is_scalar_type (t
))
3550 /* Are we dealing with an array or string of known dimensions? */
3551 else if ((t
->code () == TYPE_CODE_ARRAY
3552 || t
->code () == TYPE_CODE_STRING
) && t
->num_fields () == 1
3553 && t
->index_type ()->code () == TYPE_CODE_RANGE
)
3555 LONGEST low_bound
, high_bound
;
3556 struct type
*elt_type
= check_typedef (TYPE_TARGET_TYPE (t
));
3558 get_discrete_bounds (t
->index_type (), &low_bound
, &high_bound
);
3560 return high_bound
== low_bound
&& is_scalar_type_recursive (elt_type
);
3562 /* Are we dealing with a struct with one element? */
3563 else if (t
->code () == TYPE_CODE_STRUCT
&& t
->num_fields () == 1)
3564 return is_scalar_type_recursive (t
->field (0).type ());
3565 else if (t
->code () == TYPE_CODE_UNION
)
3567 int i
, n
= t
->num_fields ();
3569 /* If all elements of the union are scalar, then the union is scalar. */
3570 for (i
= 0; i
< n
; i
++)
3571 if (!is_scalar_type_recursive (t
->field (i
).type ()))
3580 /* Return true is T is a class or a union. False otherwise. */
3583 class_or_union_p (const struct type
*t
)
3585 return (t
->code () == TYPE_CODE_STRUCT
3586 || t
->code () == TYPE_CODE_UNION
);
3589 /* A helper function which returns true if types A and B represent the
3590 "same" class type. This is true if the types have the same main
3591 type, or the same name. */
3594 class_types_same_p (const struct type
*a
, const struct type
*b
)
3596 return (TYPE_MAIN_TYPE (a
) == TYPE_MAIN_TYPE (b
)
3597 || (a
->name () && b
->name ()
3598 && !strcmp (a
->name (), b
->name ())));
3601 /* If BASE is an ancestor of DCLASS return the distance between them.
3602 otherwise return -1;
3606 class B: public A {};
3607 class C: public B {};
3610 distance_to_ancestor (A, A, 0) = 0
3611 distance_to_ancestor (A, B, 0) = 1
3612 distance_to_ancestor (A, C, 0) = 2
3613 distance_to_ancestor (A, D, 0) = 3
3615 If PUBLIC is 1 then only public ancestors are considered,
3616 and the function returns the distance only if BASE is a public ancestor
3620 distance_to_ancestor (A, D, 1) = -1. */
3623 distance_to_ancestor (struct type
*base
, struct type
*dclass
, int is_public
)
3628 base
= check_typedef (base
);
3629 dclass
= check_typedef (dclass
);
3631 if (class_types_same_p (base
, dclass
))
3634 for (i
= 0; i
< TYPE_N_BASECLASSES (dclass
); i
++)
3636 if (is_public
&& ! BASETYPE_VIA_PUBLIC (dclass
, i
))
3639 d
= distance_to_ancestor (base
, TYPE_BASECLASS (dclass
, i
), is_public
);
3647 /* Check whether BASE is an ancestor or base class or DCLASS
3648 Return 1 if so, and 0 if not.
3649 Note: If BASE and DCLASS are of the same type, this function
3650 will return 1. So for some class A, is_ancestor (A, A) will
3654 is_ancestor (struct type
*base
, struct type
*dclass
)
3656 return distance_to_ancestor (base
, dclass
, 0) >= 0;
3659 /* Like is_ancestor, but only returns true when BASE is a public
3660 ancestor of DCLASS. */
3663 is_public_ancestor (struct type
*base
, struct type
*dclass
)
3665 return distance_to_ancestor (base
, dclass
, 1) >= 0;
3668 /* A helper function for is_unique_ancestor. */
3671 is_unique_ancestor_worker (struct type
*base
, struct type
*dclass
,
3673 const gdb_byte
*valaddr
, int embedded_offset
,
3674 CORE_ADDR address
, struct value
*val
)
3678 base
= check_typedef (base
);
3679 dclass
= check_typedef (dclass
);
3681 for (i
= 0; i
< TYPE_N_BASECLASSES (dclass
) && count
< 2; ++i
)
3686 iter
= check_typedef (TYPE_BASECLASS (dclass
, i
));
3688 this_offset
= baseclass_offset (dclass
, i
, valaddr
, embedded_offset
,
3691 if (class_types_same_p (base
, iter
))
3693 /* If this is the first subclass, set *OFFSET and set count
3694 to 1. Otherwise, if this is at the same offset as
3695 previous instances, do nothing. Otherwise, increment
3699 *offset
= this_offset
;
3702 else if (this_offset
== *offset
)
3710 count
+= is_unique_ancestor_worker (base
, iter
, offset
,
3712 embedded_offset
+ this_offset
,
3719 /* Like is_ancestor, but only returns true if BASE is a unique base
3720 class of the type of VAL. */
3723 is_unique_ancestor (struct type
*base
, struct value
*val
)
3727 return is_unique_ancestor_worker (base
, value_type (val
), &offset
,
3728 value_contents_for_printing (val
),
3729 value_embedded_offset (val
),
3730 value_address (val
), val
) == 1;
3733 /* See gdbtypes.h. */
3736 type_byte_order (const struct type
*type
)
3738 bfd_endian byteorder
= gdbarch_byte_order (get_type_arch (type
));
3739 if (type
->endianity_is_not_default ())
3741 if (byteorder
== BFD_ENDIAN_BIG
)
3742 return BFD_ENDIAN_LITTLE
;
3745 gdb_assert (byteorder
== BFD_ENDIAN_LITTLE
);
3746 return BFD_ENDIAN_BIG
;
3754 /* Overload resolution. */
3756 /* Return the sum of the rank of A with the rank of B. */
3759 sum_ranks (struct rank a
, struct rank b
)
3762 c
.rank
= a
.rank
+ b
.rank
;
3763 c
.subrank
= a
.subrank
+ b
.subrank
;
3767 /* Compare rank A and B and return:
3769 1 if a is better than b
3770 -1 if b is better than a. */
3773 compare_ranks (struct rank a
, struct rank b
)
3775 if (a
.rank
== b
.rank
)
3777 if (a
.subrank
== b
.subrank
)
3779 if (a
.subrank
< b
.subrank
)
3781 if (a
.subrank
> b
.subrank
)
3785 if (a
.rank
< b
.rank
)
3788 /* a.rank > b.rank */
3792 /* Functions for overload resolution begin here. */
3794 /* Compare two badness vectors A and B and return the result.
3795 0 => A and B are identical
3796 1 => A and B are incomparable
3797 2 => A is better than B
3798 3 => A is worse than B */
3801 compare_badness (const badness_vector
&a
, const badness_vector
&b
)
3805 short found_pos
= 0; /* any positives in c? */
3806 short found_neg
= 0; /* any negatives in c? */
3808 /* differing sizes => incomparable */
3809 if (a
.size () != b
.size ())
3812 /* Subtract b from a */
3813 for (i
= 0; i
< a
.size (); i
++)
3815 tmp
= compare_ranks (b
[i
], a
[i
]);
3825 return 1; /* incomparable */
3827 return 3; /* A > B */
3833 return 2; /* A < B */
3835 return 0; /* A == B */
3839 /* Rank a function by comparing its parameter types (PARMS), to the
3840 types of an argument list (ARGS). Return the badness vector. This
3841 has ARGS.size() + 1 entries. */
3844 rank_function (gdb::array_view
<type
*> parms
,
3845 gdb::array_view
<value
*> args
)
3847 /* add 1 for the length-match rank. */
3849 bv
.reserve (1 + args
.size ());
3851 /* First compare the lengths of the supplied lists.
3852 If there is a mismatch, set it to a high value. */
3854 /* pai/1997-06-03 FIXME: when we have debug info about default
3855 arguments and ellipsis parameter lists, we should consider those
3856 and rank the length-match more finely. */
3858 bv
.push_back ((args
.size () != parms
.size ())
3859 ? LENGTH_MISMATCH_BADNESS
3860 : EXACT_MATCH_BADNESS
);
3862 /* Now rank all the parameters of the candidate function. */
3863 size_t min_len
= std::min (parms
.size (), args
.size ());
3865 for (size_t i
= 0; i
< min_len
; i
++)
3866 bv
.push_back (rank_one_type (parms
[i
], value_type (args
[i
]),
3869 /* If more arguments than parameters, add dummy entries. */
3870 for (size_t i
= min_len
; i
< args
.size (); i
++)
3871 bv
.push_back (TOO_FEW_PARAMS_BADNESS
);
3876 /* Compare the names of two integer types, assuming that any sign
3877 qualifiers have been checked already. We do it this way because
3878 there may be an "int" in the name of one of the types. */
3881 integer_types_same_name_p (const char *first
, const char *second
)
3883 int first_p
, second_p
;
3885 /* If both are shorts, return 1; if neither is a short, keep
3887 first_p
= (strstr (first
, "short") != NULL
);
3888 second_p
= (strstr (second
, "short") != NULL
);
3889 if (first_p
&& second_p
)
3891 if (first_p
|| second_p
)
3894 /* Likewise for long. */
3895 first_p
= (strstr (first
, "long") != NULL
);
3896 second_p
= (strstr (second
, "long") != NULL
);
3897 if (first_p
&& second_p
)
3899 if (first_p
|| second_p
)
3902 /* Likewise for char. */
3903 first_p
= (strstr (first
, "char") != NULL
);
3904 second_p
= (strstr (second
, "char") != NULL
);
3905 if (first_p
&& second_p
)
3907 if (first_p
|| second_p
)
3910 /* They must both be ints. */
3914 /* Compares type A to type B. Returns true if they represent the same
3915 type, false otherwise. */
3918 types_equal (struct type
*a
, struct type
*b
)
3920 /* Identical type pointers. */
3921 /* However, this still doesn't catch all cases of same type for b
3922 and a. The reason is that builtin types are different from
3923 the same ones constructed from the object. */
3927 /* Resolve typedefs */
3928 if (a
->code () == TYPE_CODE_TYPEDEF
)
3929 a
= check_typedef (a
);
3930 if (b
->code () == TYPE_CODE_TYPEDEF
)
3931 b
= check_typedef (b
);
3933 /* If after resolving typedefs a and b are not of the same type
3934 code then they are not equal. */
3935 if (a
->code () != b
->code ())
3938 /* If a and b are both pointers types or both reference types then
3939 they are equal of the same type iff the objects they refer to are
3940 of the same type. */
3941 if (a
->code () == TYPE_CODE_PTR
3942 || a
->code () == TYPE_CODE_REF
)
3943 return types_equal (TYPE_TARGET_TYPE (a
),
3944 TYPE_TARGET_TYPE (b
));
3946 /* Well, damnit, if the names are exactly the same, I'll say they
3947 are exactly the same. This happens when we generate method
3948 stubs. The types won't point to the same address, but they
3949 really are the same. */
3951 if (a
->name () && b
->name ()
3952 && strcmp (a
->name (), b
->name ()) == 0)
3955 /* Check if identical after resolving typedefs. */
3959 /* Two function types are equal if their argument and return types
3961 if (a
->code () == TYPE_CODE_FUNC
)
3965 if (a
->num_fields () != b
->num_fields ())
3968 if (!types_equal (TYPE_TARGET_TYPE (a
), TYPE_TARGET_TYPE (b
)))
3971 for (i
= 0; i
< a
->num_fields (); ++i
)
3972 if (!types_equal (a
->field (i
).type (), b
->field (i
).type ()))
3981 /* Deep comparison of types. */
3983 /* An entry in the type-equality bcache. */
3985 struct type_equality_entry
3987 type_equality_entry (struct type
*t1
, struct type
*t2
)
3993 struct type
*type1
, *type2
;
3996 /* A helper function to compare two strings. Returns true if they are
3997 the same, false otherwise. Handles NULLs properly. */
4000 compare_maybe_null_strings (const char *s
, const char *t
)
4002 if (s
== NULL
|| t
== NULL
)
4004 return strcmp (s
, t
) == 0;
4007 /* A helper function for check_types_worklist that checks two types for
4008 "deep" equality. Returns true if the types are considered the
4009 same, false otherwise. */
4012 check_types_equal (struct type
*type1
, struct type
*type2
,
4013 std::vector
<type_equality_entry
> *worklist
)
4015 type1
= check_typedef (type1
);
4016 type2
= check_typedef (type2
);
4021 if (type1
->code () != type2
->code ()
4022 || TYPE_LENGTH (type1
) != TYPE_LENGTH (type2
)
4023 || type1
->is_unsigned () != type2
->is_unsigned ()
4024 || type1
->has_no_signedness () != type2
->has_no_signedness ()
4025 || type1
->endianity_is_not_default () != type2
->endianity_is_not_default ()
4026 || type1
->has_varargs () != type2
->has_varargs ()
4027 || type1
->is_vector () != type2
->is_vector ()
4028 || TYPE_NOTTEXT (type1
) != TYPE_NOTTEXT (type2
)
4029 || type1
->instance_flags () != type2
->instance_flags ()
4030 || type1
->num_fields () != type2
->num_fields ())
4033 if (!compare_maybe_null_strings (type1
->name (), type2
->name ()))
4035 if (!compare_maybe_null_strings (type1
->name (), type2
->name ()))
4038 if (type1
->code () == TYPE_CODE_RANGE
)
4040 if (*type1
->bounds () != *type2
->bounds ())
4047 for (i
= 0; i
< type1
->num_fields (); ++i
)
4049 const struct field
*field1
= &type1
->field (i
);
4050 const struct field
*field2
= &type2
->field (i
);
4052 if (FIELD_ARTIFICIAL (*field1
) != FIELD_ARTIFICIAL (*field2
)
4053 || FIELD_BITSIZE (*field1
) != FIELD_BITSIZE (*field2
)
4054 || FIELD_LOC_KIND (*field1
) != FIELD_LOC_KIND (*field2
))
4056 if (!compare_maybe_null_strings (FIELD_NAME (*field1
),
4057 FIELD_NAME (*field2
)))
4059 switch (FIELD_LOC_KIND (*field1
))
4061 case FIELD_LOC_KIND_BITPOS
:
4062 if (FIELD_BITPOS (*field1
) != FIELD_BITPOS (*field2
))
4065 case FIELD_LOC_KIND_ENUMVAL
:
4066 if (FIELD_ENUMVAL (*field1
) != FIELD_ENUMVAL (*field2
))
4069 case FIELD_LOC_KIND_PHYSADDR
:
4070 if (FIELD_STATIC_PHYSADDR (*field1
)
4071 != FIELD_STATIC_PHYSADDR (*field2
))
4074 case FIELD_LOC_KIND_PHYSNAME
:
4075 if (!compare_maybe_null_strings (FIELD_STATIC_PHYSNAME (*field1
),
4076 FIELD_STATIC_PHYSNAME (*field2
)))
4079 case FIELD_LOC_KIND_DWARF_BLOCK
:
4081 struct dwarf2_locexpr_baton
*block1
, *block2
;
4083 block1
= FIELD_DWARF_BLOCK (*field1
);
4084 block2
= FIELD_DWARF_BLOCK (*field2
);
4085 if (block1
->per_cu
!= block2
->per_cu
4086 || block1
->size
!= block2
->size
4087 || memcmp (block1
->data
, block2
->data
, block1
->size
) != 0)
4092 internal_error (__FILE__
, __LINE__
, _("Unsupported field kind "
4093 "%d by check_types_equal"),
4094 FIELD_LOC_KIND (*field1
));
4097 worklist
->emplace_back (field1
->type (), field2
->type ());
4101 if (TYPE_TARGET_TYPE (type1
) != NULL
)
4103 if (TYPE_TARGET_TYPE (type2
) == NULL
)
4106 worklist
->emplace_back (TYPE_TARGET_TYPE (type1
),
4107 TYPE_TARGET_TYPE (type2
));
4109 else if (TYPE_TARGET_TYPE (type2
) != NULL
)
4115 /* Check types on a worklist for equality. Returns false if any pair
4116 is not equal, true if they are all considered equal. */
4119 check_types_worklist (std::vector
<type_equality_entry
> *worklist
,
4122 while (!worklist
->empty ())
4126 struct type_equality_entry entry
= std::move (worklist
->back ());
4127 worklist
->pop_back ();
4129 /* If the type pair has already been visited, we know it is
4131 cache
->insert (&entry
, sizeof (entry
), &added
);
4135 if (!check_types_equal (entry
.type1
, entry
.type2
, worklist
))
4142 /* Return true if types TYPE1 and TYPE2 are equal, as determined by a
4143 "deep comparison". Otherwise return false. */
4146 types_deeply_equal (struct type
*type1
, struct type
*type2
)
4148 std::vector
<type_equality_entry
> worklist
;
4150 gdb_assert (type1
!= NULL
&& type2
!= NULL
);
4152 /* Early exit for the simple case. */
4157 worklist
.emplace_back (type1
, type2
);
4158 return check_types_worklist (&worklist
, &cache
);
4161 /* Allocated status of type TYPE. Return zero if type TYPE is allocated.
4162 Otherwise return one. */
4165 type_not_allocated (const struct type
*type
)
4167 struct dynamic_prop
*prop
= TYPE_ALLOCATED_PROP (type
);
4169 return (prop
!= nullptr && prop
->kind () == PROP_CONST
4170 && prop
->const_val () == 0);
4173 /* Associated status of type TYPE. Return zero if type TYPE is associated.
4174 Otherwise return one. */
4177 type_not_associated (const struct type
*type
)
4179 struct dynamic_prop
*prop
= TYPE_ASSOCIATED_PROP (type
);
4181 return (prop
!= nullptr && prop
->kind () == PROP_CONST
4182 && prop
->const_val () == 0);
4185 /* rank_one_type helper for when PARM's type code is TYPE_CODE_PTR. */
4188 rank_one_type_parm_ptr (struct type
*parm
, struct type
*arg
, struct value
*value
)
4190 struct rank rank
= {0,0};
4192 switch (arg
->code ())
4196 /* Allowed pointer conversions are:
4197 (a) pointer to void-pointer conversion. */
4198 if (TYPE_TARGET_TYPE (parm
)->code () == TYPE_CODE_VOID
)
4199 return VOID_PTR_CONVERSION_BADNESS
;
4201 /* (b) pointer to ancestor-pointer conversion. */
4202 rank
.subrank
= distance_to_ancestor (TYPE_TARGET_TYPE (parm
),
4203 TYPE_TARGET_TYPE (arg
),
4205 if (rank
.subrank
>= 0)
4206 return sum_ranks (BASE_PTR_CONVERSION_BADNESS
, rank
);
4208 return INCOMPATIBLE_TYPE_BADNESS
;
4209 case TYPE_CODE_ARRAY
:
4211 struct type
*t1
= TYPE_TARGET_TYPE (parm
);
4212 struct type
*t2
= TYPE_TARGET_TYPE (arg
);
4214 if (types_equal (t1
, t2
))
4216 /* Make sure they are CV equal. */
4217 if (TYPE_CONST (t1
) != TYPE_CONST (t2
))
4218 rank
.subrank
|= CV_CONVERSION_CONST
;
4219 if (TYPE_VOLATILE (t1
) != TYPE_VOLATILE (t2
))
4220 rank
.subrank
|= CV_CONVERSION_VOLATILE
;
4221 if (rank
.subrank
!= 0)
4222 return sum_ranks (CV_CONVERSION_BADNESS
, rank
);
4223 return EXACT_MATCH_BADNESS
;
4225 return INCOMPATIBLE_TYPE_BADNESS
;
4227 case TYPE_CODE_FUNC
:
4228 return rank_one_type (TYPE_TARGET_TYPE (parm
), arg
, NULL
);
4230 if (value
!= NULL
&& value_type (value
)->code () == TYPE_CODE_INT
)
4232 if (value_as_long (value
) == 0)
4234 /* Null pointer conversion: allow it to be cast to a pointer.
4235 [4.10.1 of C++ standard draft n3290] */
4236 return NULL_POINTER_CONVERSION_BADNESS
;
4240 /* If type checking is disabled, allow the conversion. */
4241 if (!strict_type_checking
)
4242 return NS_INTEGER_POINTER_CONVERSION_BADNESS
;
4246 case TYPE_CODE_ENUM
:
4247 case TYPE_CODE_FLAGS
:
4248 case TYPE_CODE_CHAR
:
4249 case TYPE_CODE_RANGE
:
4250 case TYPE_CODE_BOOL
:
4252 return INCOMPATIBLE_TYPE_BADNESS
;
4256 /* rank_one_type helper for when PARM's type code is TYPE_CODE_ARRAY. */
4259 rank_one_type_parm_array (struct type
*parm
, struct type
*arg
, struct value
*value
)
4261 switch (arg
->code ())
4264 case TYPE_CODE_ARRAY
:
4265 return rank_one_type (TYPE_TARGET_TYPE (parm
),
4266 TYPE_TARGET_TYPE (arg
), NULL
);
4268 return INCOMPATIBLE_TYPE_BADNESS
;
4272 /* rank_one_type helper for when PARM's type code is TYPE_CODE_FUNC. */
4275 rank_one_type_parm_func (struct type
*parm
, struct type
*arg
, struct value
*value
)
4277 switch (arg
->code ())
4279 case TYPE_CODE_PTR
: /* funcptr -> func */
4280 return rank_one_type (parm
, TYPE_TARGET_TYPE (arg
), NULL
);
4282 return INCOMPATIBLE_TYPE_BADNESS
;
4286 /* rank_one_type helper for when PARM's type code is TYPE_CODE_INT. */
4289 rank_one_type_parm_int (struct type
*parm
, struct type
*arg
, struct value
*value
)
4291 switch (arg
->code ())
4294 if (TYPE_LENGTH (arg
) == TYPE_LENGTH (parm
))
4296 /* Deal with signed, unsigned, and plain chars and
4297 signed and unsigned ints. */
4298 if (parm
->has_no_signedness ())
4300 /* This case only for character types. */
4301 if (arg
->has_no_signedness ())
4302 return EXACT_MATCH_BADNESS
; /* plain char -> plain char */
4303 else /* signed/unsigned char -> plain char */
4304 return INTEGER_CONVERSION_BADNESS
;
4306 else if (parm
->is_unsigned ())
4308 if (arg
->is_unsigned ())
4310 /* unsigned int -> unsigned int, or
4311 unsigned long -> unsigned long */
4312 if (integer_types_same_name_p (parm
->name (),
4314 return EXACT_MATCH_BADNESS
;
4315 else if (integer_types_same_name_p (arg
->name (),
4317 && integer_types_same_name_p (parm
->name (),
4319 /* unsigned int -> unsigned long */
4320 return INTEGER_PROMOTION_BADNESS
;
4322 /* unsigned long -> unsigned int */
4323 return INTEGER_CONVERSION_BADNESS
;
4327 if (integer_types_same_name_p (arg
->name (),
4329 && integer_types_same_name_p (parm
->name (),
4331 /* signed long -> unsigned int */
4332 return INTEGER_CONVERSION_BADNESS
;
4334 /* signed int/long -> unsigned int/long */
4335 return INTEGER_CONVERSION_BADNESS
;
4338 else if (!arg
->has_no_signedness () && !arg
->is_unsigned ())
4340 if (integer_types_same_name_p (parm
->name (),
4342 return EXACT_MATCH_BADNESS
;
4343 else if (integer_types_same_name_p (arg
->name (),
4345 && integer_types_same_name_p (parm
->name (),
4347 return INTEGER_PROMOTION_BADNESS
;
4349 return INTEGER_CONVERSION_BADNESS
;
4352 return INTEGER_CONVERSION_BADNESS
;
4354 else if (TYPE_LENGTH (arg
) < TYPE_LENGTH (parm
))
4355 return INTEGER_PROMOTION_BADNESS
;
4357 return INTEGER_CONVERSION_BADNESS
;
4358 case TYPE_CODE_ENUM
:
4359 case TYPE_CODE_FLAGS
:
4360 case TYPE_CODE_CHAR
:
4361 case TYPE_CODE_RANGE
:
4362 case TYPE_CODE_BOOL
:
4363 if (TYPE_DECLARED_CLASS (arg
))
4364 return INCOMPATIBLE_TYPE_BADNESS
;
4365 return INTEGER_PROMOTION_BADNESS
;
4367 return INT_FLOAT_CONVERSION_BADNESS
;
4369 return NS_POINTER_CONVERSION_BADNESS
;
4371 return INCOMPATIBLE_TYPE_BADNESS
;
4375 /* rank_one_type helper for when PARM's type code is TYPE_CODE_ENUM. */
4378 rank_one_type_parm_enum (struct type
*parm
, struct type
*arg
, struct value
*value
)
4380 switch (arg
->code ())
4383 case TYPE_CODE_CHAR
:
4384 case TYPE_CODE_RANGE
:
4385 case TYPE_CODE_BOOL
:
4386 case TYPE_CODE_ENUM
:
4387 if (TYPE_DECLARED_CLASS (parm
) || TYPE_DECLARED_CLASS (arg
))
4388 return INCOMPATIBLE_TYPE_BADNESS
;
4389 return INTEGER_CONVERSION_BADNESS
;
4391 return INT_FLOAT_CONVERSION_BADNESS
;
4393 return INCOMPATIBLE_TYPE_BADNESS
;
4397 /* rank_one_type helper for when PARM's type code is TYPE_CODE_CHAR. */
4400 rank_one_type_parm_char (struct type
*parm
, struct type
*arg
, struct value
*value
)
4402 switch (arg
->code ())
4404 case TYPE_CODE_RANGE
:
4405 case TYPE_CODE_BOOL
:
4406 case TYPE_CODE_ENUM
:
4407 if (TYPE_DECLARED_CLASS (arg
))
4408 return INCOMPATIBLE_TYPE_BADNESS
;
4409 return INTEGER_CONVERSION_BADNESS
;
4411 return INT_FLOAT_CONVERSION_BADNESS
;
4413 if (TYPE_LENGTH (arg
) > TYPE_LENGTH (parm
))
4414 return INTEGER_CONVERSION_BADNESS
;
4415 else if (TYPE_LENGTH (arg
) < TYPE_LENGTH (parm
))
4416 return INTEGER_PROMOTION_BADNESS
;
4418 case TYPE_CODE_CHAR
:
4419 /* Deal with signed, unsigned, and plain chars for C++ and
4420 with int cases falling through from previous case. */
4421 if (parm
->has_no_signedness ())
4423 if (arg
->has_no_signedness ())
4424 return EXACT_MATCH_BADNESS
;
4426 return INTEGER_CONVERSION_BADNESS
;
4428 else if (parm
->is_unsigned ())
4430 if (arg
->is_unsigned ())
4431 return EXACT_MATCH_BADNESS
;
4433 return INTEGER_PROMOTION_BADNESS
;
4435 else if (!arg
->has_no_signedness () && !arg
->is_unsigned ())
4436 return EXACT_MATCH_BADNESS
;
4438 return INTEGER_CONVERSION_BADNESS
;
4440 return INCOMPATIBLE_TYPE_BADNESS
;
4444 /* rank_one_type helper for when PARM's type code is TYPE_CODE_RANGE. */
4447 rank_one_type_parm_range (struct type
*parm
, struct type
*arg
, struct value
*value
)
4449 switch (arg
->code ())
4452 case TYPE_CODE_CHAR
:
4453 case TYPE_CODE_RANGE
:
4454 case TYPE_CODE_BOOL
:
4455 case TYPE_CODE_ENUM
:
4456 return INTEGER_CONVERSION_BADNESS
;
4458 return INT_FLOAT_CONVERSION_BADNESS
;
4460 return INCOMPATIBLE_TYPE_BADNESS
;
4464 /* rank_one_type helper for when PARM's type code is TYPE_CODE_BOOL. */
4467 rank_one_type_parm_bool (struct type
*parm
, struct type
*arg
, struct value
*value
)
4469 switch (arg
->code ())
4471 /* n3290 draft, section 4.12.1 (conv.bool):
4473 "A prvalue of arithmetic, unscoped enumeration, pointer, or
4474 pointer to member type can be converted to a prvalue of type
4475 bool. A zero value, null pointer value, or null member pointer
4476 value is converted to false; any other value is converted to
4477 true. A prvalue of type std::nullptr_t can be converted to a
4478 prvalue of type bool; the resulting value is false." */
4480 case TYPE_CODE_CHAR
:
4481 case TYPE_CODE_ENUM
:
4483 case TYPE_CODE_MEMBERPTR
:
4485 return BOOL_CONVERSION_BADNESS
;
4486 case TYPE_CODE_RANGE
:
4487 return INCOMPATIBLE_TYPE_BADNESS
;
4488 case TYPE_CODE_BOOL
:
4489 return EXACT_MATCH_BADNESS
;
4491 return INCOMPATIBLE_TYPE_BADNESS
;
4495 /* rank_one_type helper for when PARM's type code is TYPE_CODE_FLOAT. */
4498 rank_one_type_parm_float (struct type
*parm
, struct type
*arg
, struct value
*value
)
4500 switch (arg
->code ())
4503 if (TYPE_LENGTH (arg
) < TYPE_LENGTH (parm
))
4504 return FLOAT_PROMOTION_BADNESS
;
4505 else if (TYPE_LENGTH (arg
) == TYPE_LENGTH (parm
))
4506 return EXACT_MATCH_BADNESS
;
4508 return FLOAT_CONVERSION_BADNESS
;
4510 case TYPE_CODE_BOOL
:
4511 case TYPE_CODE_ENUM
:
4512 case TYPE_CODE_RANGE
:
4513 case TYPE_CODE_CHAR
:
4514 return INT_FLOAT_CONVERSION_BADNESS
;
4516 return INCOMPATIBLE_TYPE_BADNESS
;
4520 /* rank_one_type helper for when PARM's type code is TYPE_CODE_COMPLEX. */
4523 rank_one_type_parm_complex (struct type
*parm
, struct type
*arg
, struct value
*value
)
4525 switch (arg
->code ())
4526 { /* Strictly not needed for C++, but... */
4528 return FLOAT_PROMOTION_BADNESS
;
4529 case TYPE_CODE_COMPLEX
:
4530 return EXACT_MATCH_BADNESS
;
4532 return INCOMPATIBLE_TYPE_BADNESS
;
4536 /* rank_one_type helper for when PARM's type code is TYPE_CODE_STRUCT. */
4539 rank_one_type_parm_struct (struct type
*parm
, struct type
*arg
, struct value
*value
)
4541 struct rank rank
= {0, 0};
4543 switch (arg
->code ())
4545 case TYPE_CODE_STRUCT
:
4546 /* Check for derivation */
4547 rank
.subrank
= distance_to_ancestor (parm
, arg
, 0);
4548 if (rank
.subrank
>= 0)
4549 return sum_ranks (BASE_CONVERSION_BADNESS
, rank
);
4552 return INCOMPATIBLE_TYPE_BADNESS
;
4556 /* rank_one_type helper for when PARM's type code is TYPE_CODE_SET. */
4559 rank_one_type_parm_set (struct type
*parm
, struct type
*arg
, struct value
*value
)
4561 switch (arg
->code ())
4565 return rank_one_type (parm
->field (0).type (),
4566 arg
->field (0).type (), NULL
);
4568 return INCOMPATIBLE_TYPE_BADNESS
;
4572 /* Compare one type (PARM) for compatibility with another (ARG).
4573 * PARM is intended to be the parameter type of a function; and
4574 * ARG is the supplied argument's type. This function tests if
4575 * the latter can be converted to the former.
4576 * VALUE is the argument's value or NULL if none (or called recursively)
4578 * Return 0 if they are identical types;
4579 * Otherwise, return an integer which corresponds to how compatible
4580 * PARM is to ARG. The higher the return value, the worse the match.
4581 * Generally the "bad" conversions are all uniformly assigned a 100. */
4584 rank_one_type (struct type
*parm
, struct type
*arg
, struct value
*value
)
4586 struct rank rank
= {0,0};
4588 /* Resolve typedefs */
4589 if (parm
->code () == TYPE_CODE_TYPEDEF
)
4590 parm
= check_typedef (parm
);
4591 if (arg
->code () == TYPE_CODE_TYPEDEF
)
4592 arg
= check_typedef (arg
);
4594 if (TYPE_IS_REFERENCE (parm
) && value
!= NULL
)
4596 if (VALUE_LVAL (value
) == not_lval
)
4598 /* Rvalues should preferably bind to rvalue references or const
4599 lvalue references. */
4600 if (parm
->code () == TYPE_CODE_RVALUE_REF
)
4601 rank
.subrank
= REFERENCE_CONVERSION_RVALUE
;
4602 else if (TYPE_CONST (TYPE_TARGET_TYPE (parm
)))
4603 rank
.subrank
= REFERENCE_CONVERSION_CONST_LVALUE
;
4605 return INCOMPATIBLE_TYPE_BADNESS
;
4606 return sum_ranks (rank
, REFERENCE_CONVERSION_BADNESS
);
4610 /* It's illegal to pass an lvalue as an rvalue. */
4611 if (parm
->code () == TYPE_CODE_RVALUE_REF
)
4612 return INCOMPATIBLE_TYPE_BADNESS
;
4616 if (types_equal (parm
, arg
))
4618 struct type
*t1
= parm
;
4619 struct type
*t2
= arg
;
4621 /* For pointers and references, compare target type. */
4622 if (parm
->code () == TYPE_CODE_PTR
|| TYPE_IS_REFERENCE (parm
))
4624 t1
= TYPE_TARGET_TYPE (parm
);
4625 t2
= TYPE_TARGET_TYPE (arg
);
4628 /* Make sure they are CV equal, too. */
4629 if (TYPE_CONST (t1
) != TYPE_CONST (t2
))
4630 rank
.subrank
|= CV_CONVERSION_CONST
;
4631 if (TYPE_VOLATILE (t1
) != TYPE_VOLATILE (t2
))
4632 rank
.subrank
|= CV_CONVERSION_VOLATILE
;
4633 if (rank
.subrank
!= 0)
4634 return sum_ranks (CV_CONVERSION_BADNESS
, rank
);
4635 return EXACT_MATCH_BADNESS
;
4638 /* See through references, since we can almost make non-references
4641 if (TYPE_IS_REFERENCE (arg
))
4642 return (sum_ranks (rank_one_type (parm
, TYPE_TARGET_TYPE (arg
), NULL
),
4643 REFERENCE_SEE_THROUGH_BADNESS
));
4644 if (TYPE_IS_REFERENCE (parm
))
4645 return (sum_ranks (rank_one_type (TYPE_TARGET_TYPE (parm
), arg
, NULL
),
4646 REFERENCE_SEE_THROUGH_BADNESS
));
4648 /* Debugging only. */
4649 fprintf_filtered (gdb_stderr
,
4650 "------ Arg is %s [%d], parm is %s [%d]\n",
4651 arg
->name (), arg
->code (),
4652 parm
->name (), parm
->code ());
4654 /* x -> y means arg of type x being supplied for parameter of type y. */
4656 switch (parm
->code ())
4659 return rank_one_type_parm_ptr (parm
, arg
, value
);
4660 case TYPE_CODE_ARRAY
:
4661 return rank_one_type_parm_array (parm
, arg
, value
);
4662 case TYPE_CODE_FUNC
:
4663 return rank_one_type_parm_func (parm
, arg
, value
);
4665 return rank_one_type_parm_int (parm
, arg
, value
);
4666 case TYPE_CODE_ENUM
:
4667 return rank_one_type_parm_enum (parm
, arg
, value
);
4668 case TYPE_CODE_CHAR
:
4669 return rank_one_type_parm_char (parm
, arg
, value
);
4670 case TYPE_CODE_RANGE
:
4671 return rank_one_type_parm_range (parm
, arg
, value
);
4672 case TYPE_CODE_BOOL
:
4673 return rank_one_type_parm_bool (parm
, arg
, value
);
4675 return rank_one_type_parm_float (parm
, arg
, value
);
4676 case TYPE_CODE_COMPLEX
:
4677 return rank_one_type_parm_complex (parm
, arg
, value
);
4678 case TYPE_CODE_STRUCT
:
4679 return rank_one_type_parm_struct (parm
, arg
, value
);
4681 return rank_one_type_parm_set (parm
, arg
, value
);
4683 return INCOMPATIBLE_TYPE_BADNESS
;
4684 } /* switch (arg->code ()) */
4687 /* End of functions for overload resolution. */
4689 /* Routines to pretty-print types. */
4692 print_bit_vector (B_TYPE
*bits
, int nbits
)
4696 for (bitno
= 0; bitno
< nbits
; bitno
++)
4698 if ((bitno
% 8) == 0)
4700 puts_filtered (" ");
4702 if (B_TST (bits
, bitno
))
4703 printf_filtered (("1"));
4705 printf_filtered (("0"));
4709 /* Note the first arg should be the "this" pointer, we may not want to
4710 include it since we may get into a infinitely recursive
4714 print_args (struct field
*args
, int nargs
, int spaces
)
4720 for (i
= 0; i
< nargs
; i
++)
4722 printfi_filtered (spaces
, "[%d] name '%s'\n", i
,
4723 args
[i
].name
!= NULL
? args
[i
].name
: "<NULL>");
4724 recursive_dump_type (args
[i
].type (), spaces
+ 2);
4730 field_is_static (struct field
*f
)
4732 /* "static" fields are the fields whose location is not relative
4733 to the address of the enclosing struct. It would be nice to
4734 have a dedicated flag that would be set for static fields when
4735 the type is being created. But in practice, checking the field
4736 loc_kind should give us an accurate answer. */
4737 return (FIELD_LOC_KIND (*f
) == FIELD_LOC_KIND_PHYSNAME
4738 || FIELD_LOC_KIND (*f
) == FIELD_LOC_KIND_PHYSADDR
);
4742 dump_fn_fieldlists (struct type
*type
, int spaces
)
4748 printfi_filtered (spaces
, "fn_fieldlists ");
4749 gdb_print_host_address (TYPE_FN_FIELDLISTS (type
), gdb_stdout
);
4750 printf_filtered ("\n");
4751 for (method_idx
= 0; method_idx
< TYPE_NFN_FIELDS (type
); method_idx
++)
4753 f
= TYPE_FN_FIELDLIST1 (type
, method_idx
);
4754 printfi_filtered (spaces
+ 2, "[%d] name '%s' (",
4756 TYPE_FN_FIELDLIST_NAME (type
, method_idx
));
4757 gdb_print_host_address (TYPE_FN_FIELDLIST_NAME (type
, method_idx
),
4759 printf_filtered (_(") length %d\n"),
4760 TYPE_FN_FIELDLIST_LENGTH (type
, method_idx
));
4761 for (overload_idx
= 0;
4762 overload_idx
< TYPE_FN_FIELDLIST_LENGTH (type
, method_idx
);
4765 printfi_filtered (spaces
+ 4, "[%d] physname '%s' (",
4767 TYPE_FN_FIELD_PHYSNAME (f
, overload_idx
));
4768 gdb_print_host_address (TYPE_FN_FIELD_PHYSNAME (f
, overload_idx
),
4770 printf_filtered (")\n");
4771 printfi_filtered (spaces
+ 8, "type ");
4772 gdb_print_host_address (TYPE_FN_FIELD_TYPE (f
, overload_idx
),
4774 printf_filtered ("\n");
4776 recursive_dump_type (TYPE_FN_FIELD_TYPE (f
, overload_idx
),
4779 printfi_filtered (spaces
+ 8, "args ");
4780 gdb_print_host_address (TYPE_FN_FIELD_ARGS (f
, overload_idx
),
4782 printf_filtered ("\n");
4783 print_args (TYPE_FN_FIELD_ARGS (f
, overload_idx
),
4784 TYPE_FN_FIELD_TYPE (f
, overload_idx
)->num_fields (),
4786 printfi_filtered (spaces
+ 8, "fcontext ");
4787 gdb_print_host_address (TYPE_FN_FIELD_FCONTEXT (f
, overload_idx
),
4789 printf_filtered ("\n");
4791 printfi_filtered (spaces
+ 8, "is_const %d\n",
4792 TYPE_FN_FIELD_CONST (f
, overload_idx
));
4793 printfi_filtered (spaces
+ 8, "is_volatile %d\n",
4794 TYPE_FN_FIELD_VOLATILE (f
, overload_idx
));
4795 printfi_filtered (spaces
+ 8, "is_private %d\n",
4796 TYPE_FN_FIELD_PRIVATE (f
, overload_idx
));
4797 printfi_filtered (spaces
+ 8, "is_protected %d\n",
4798 TYPE_FN_FIELD_PROTECTED (f
, overload_idx
));
4799 printfi_filtered (spaces
+ 8, "is_stub %d\n",
4800 TYPE_FN_FIELD_STUB (f
, overload_idx
));
4801 printfi_filtered (spaces
+ 8, "defaulted %d\n",
4802 TYPE_FN_FIELD_DEFAULTED (f
, overload_idx
));
4803 printfi_filtered (spaces
+ 8, "is_deleted %d\n",
4804 TYPE_FN_FIELD_DELETED (f
, overload_idx
));
4805 printfi_filtered (spaces
+ 8, "voffset %u\n",
4806 TYPE_FN_FIELD_VOFFSET (f
, overload_idx
));
4812 print_cplus_stuff (struct type
*type
, int spaces
)
4814 printfi_filtered (spaces
, "vptr_fieldno %d\n", TYPE_VPTR_FIELDNO (type
));
4815 printfi_filtered (spaces
, "vptr_basetype ");
4816 gdb_print_host_address (TYPE_VPTR_BASETYPE (type
), gdb_stdout
);
4817 puts_filtered ("\n");
4818 if (TYPE_VPTR_BASETYPE (type
) != NULL
)
4819 recursive_dump_type (TYPE_VPTR_BASETYPE (type
), spaces
+ 2);
4821 printfi_filtered (spaces
, "n_baseclasses %d\n",
4822 TYPE_N_BASECLASSES (type
));
4823 printfi_filtered (spaces
, "nfn_fields %d\n",
4824 TYPE_NFN_FIELDS (type
));
4825 if (TYPE_N_BASECLASSES (type
) > 0)
4827 printfi_filtered (spaces
, "virtual_field_bits (%d bits at *",
4828 TYPE_N_BASECLASSES (type
));
4829 gdb_print_host_address (TYPE_FIELD_VIRTUAL_BITS (type
),
4831 printf_filtered (")");
4833 print_bit_vector (TYPE_FIELD_VIRTUAL_BITS (type
),
4834 TYPE_N_BASECLASSES (type
));
4835 puts_filtered ("\n");
4837 if (type
->num_fields () > 0)
4839 if (TYPE_FIELD_PRIVATE_BITS (type
) != NULL
)
4841 printfi_filtered (spaces
,
4842 "private_field_bits (%d bits at *",
4843 type
->num_fields ());
4844 gdb_print_host_address (TYPE_FIELD_PRIVATE_BITS (type
),
4846 printf_filtered (")");
4847 print_bit_vector (TYPE_FIELD_PRIVATE_BITS (type
),
4848 type
->num_fields ());
4849 puts_filtered ("\n");
4851 if (TYPE_FIELD_PROTECTED_BITS (type
) != NULL
)
4853 printfi_filtered (spaces
,
4854 "protected_field_bits (%d bits at *",
4855 type
->num_fields ());
4856 gdb_print_host_address (TYPE_FIELD_PROTECTED_BITS (type
),
4858 printf_filtered (")");
4859 print_bit_vector (TYPE_FIELD_PROTECTED_BITS (type
),
4860 type
->num_fields ());
4861 puts_filtered ("\n");
4864 if (TYPE_NFN_FIELDS (type
) > 0)
4866 dump_fn_fieldlists (type
, spaces
);
4869 printfi_filtered (spaces
, "calling_convention %d\n",
4870 TYPE_CPLUS_CALLING_CONVENTION (type
));
4873 /* Print the contents of the TYPE's type_specific union, assuming that
4874 its type-specific kind is TYPE_SPECIFIC_GNAT_STUFF. */
4877 print_gnat_stuff (struct type
*type
, int spaces
)
4879 struct type
*descriptive_type
= TYPE_DESCRIPTIVE_TYPE (type
);
4881 if (descriptive_type
== NULL
)
4882 printfi_filtered (spaces
+ 2, "no descriptive type\n");
4885 printfi_filtered (spaces
+ 2, "descriptive type\n");
4886 recursive_dump_type (descriptive_type
, spaces
+ 4);
4890 static struct obstack dont_print_type_obstack
;
4892 /* Print the dynamic_prop PROP. */
4895 dump_dynamic_prop (dynamic_prop
const& prop
)
4897 switch (prop
.kind ())
4900 printf_filtered ("%s", plongest (prop
.const_val ()));
4902 case PROP_UNDEFINED
:
4903 printf_filtered ("(undefined)");
4907 printf_filtered ("(dynamic)");
4910 gdb_assert_not_reached ("unhandled prop kind");
4916 recursive_dump_type (struct type
*type
, int spaces
)
4921 obstack_begin (&dont_print_type_obstack
, 0);
4923 if (type
->num_fields () > 0
4924 || (HAVE_CPLUS_STRUCT (type
) && TYPE_NFN_FIELDS (type
) > 0))
4926 struct type
**first_dont_print
4927 = (struct type
**) obstack_base (&dont_print_type_obstack
);
4929 int i
= (struct type
**)
4930 obstack_next_free (&dont_print_type_obstack
) - first_dont_print
;
4934 if (type
== first_dont_print
[i
])
4936 printfi_filtered (spaces
, "type node ");
4937 gdb_print_host_address (type
, gdb_stdout
);
4938 printf_filtered (_(" <same as already seen type>\n"));
4943 obstack_ptr_grow (&dont_print_type_obstack
, type
);
4946 printfi_filtered (spaces
, "type node ");
4947 gdb_print_host_address (type
, gdb_stdout
);
4948 printf_filtered ("\n");
4949 printfi_filtered (spaces
, "name '%s' (",
4950 type
->name () ? type
->name () : "<NULL>");
4951 gdb_print_host_address (type
->name (), gdb_stdout
);
4952 printf_filtered (")\n");
4953 printfi_filtered (spaces
, "code 0x%x ", type
->code ());
4954 switch (type
->code ())
4956 case TYPE_CODE_UNDEF
:
4957 printf_filtered ("(TYPE_CODE_UNDEF)");
4960 printf_filtered ("(TYPE_CODE_PTR)");
4962 case TYPE_CODE_ARRAY
:
4963 printf_filtered ("(TYPE_CODE_ARRAY)");
4965 case TYPE_CODE_STRUCT
:
4966 printf_filtered ("(TYPE_CODE_STRUCT)");
4968 case TYPE_CODE_UNION
:
4969 printf_filtered ("(TYPE_CODE_UNION)");
4971 case TYPE_CODE_ENUM
:
4972 printf_filtered ("(TYPE_CODE_ENUM)");
4974 case TYPE_CODE_FLAGS
:
4975 printf_filtered ("(TYPE_CODE_FLAGS)");
4977 case TYPE_CODE_FUNC
:
4978 printf_filtered ("(TYPE_CODE_FUNC)");
4981 printf_filtered ("(TYPE_CODE_INT)");
4984 printf_filtered ("(TYPE_CODE_FLT)");
4986 case TYPE_CODE_VOID
:
4987 printf_filtered ("(TYPE_CODE_VOID)");
4990 printf_filtered ("(TYPE_CODE_SET)");
4992 case TYPE_CODE_RANGE
:
4993 printf_filtered ("(TYPE_CODE_RANGE)");
4995 case TYPE_CODE_STRING
:
4996 printf_filtered ("(TYPE_CODE_STRING)");
4998 case TYPE_CODE_ERROR
:
4999 printf_filtered ("(TYPE_CODE_ERROR)");
5001 case TYPE_CODE_MEMBERPTR
:
5002 printf_filtered ("(TYPE_CODE_MEMBERPTR)");
5004 case TYPE_CODE_METHODPTR
:
5005 printf_filtered ("(TYPE_CODE_METHODPTR)");
5007 case TYPE_CODE_METHOD
:
5008 printf_filtered ("(TYPE_CODE_METHOD)");
5011 printf_filtered ("(TYPE_CODE_REF)");
5013 case TYPE_CODE_CHAR
:
5014 printf_filtered ("(TYPE_CODE_CHAR)");
5016 case TYPE_CODE_BOOL
:
5017 printf_filtered ("(TYPE_CODE_BOOL)");
5019 case TYPE_CODE_COMPLEX
:
5020 printf_filtered ("(TYPE_CODE_COMPLEX)");
5022 case TYPE_CODE_TYPEDEF
:
5023 printf_filtered ("(TYPE_CODE_TYPEDEF)");
5025 case TYPE_CODE_NAMESPACE
:
5026 printf_filtered ("(TYPE_CODE_NAMESPACE)");
5029 printf_filtered ("(UNKNOWN TYPE CODE)");
5032 puts_filtered ("\n");
5033 printfi_filtered (spaces
, "length %s\n", pulongest (TYPE_LENGTH (type
)));
5034 if (TYPE_OBJFILE_OWNED (type
))
5036 printfi_filtered (spaces
, "objfile ");
5037 gdb_print_host_address (TYPE_OWNER (type
).objfile
, gdb_stdout
);
5041 printfi_filtered (spaces
, "gdbarch ");
5042 gdb_print_host_address (TYPE_OWNER (type
).gdbarch
, gdb_stdout
);
5044 printf_filtered ("\n");
5045 printfi_filtered (spaces
, "target_type ");
5046 gdb_print_host_address (TYPE_TARGET_TYPE (type
), gdb_stdout
);
5047 printf_filtered ("\n");
5048 if (TYPE_TARGET_TYPE (type
) != NULL
)
5050 recursive_dump_type (TYPE_TARGET_TYPE (type
), spaces
+ 2);
5052 printfi_filtered (spaces
, "pointer_type ");
5053 gdb_print_host_address (TYPE_POINTER_TYPE (type
), gdb_stdout
);
5054 printf_filtered ("\n");
5055 printfi_filtered (spaces
, "reference_type ");
5056 gdb_print_host_address (TYPE_REFERENCE_TYPE (type
), gdb_stdout
);
5057 printf_filtered ("\n");
5058 printfi_filtered (spaces
, "type_chain ");
5059 gdb_print_host_address (TYPE_CHAIN (type
), gdb_stdout
);
5060 printf_filtered ("\n");
5061 printfi_filtered (spaces
, "instance_flags 0x%x",
5062 (unsigned) type
->instance_flags ());
5063 if (TYPE_CONST (type
))
5065 puts_filtered (" TYPE_CONST");
5067 if (TYPE_VOLATILE (type
))
5069 puts_filtered (" TYPE_VOLATILE");
5071 if (TYPE_CODE_SPACE (type
))
5073 puts_filtered (" TYPE_CODE_SPACE");
5075 if (TYPE_DATA_SPACE (type
))
5077 puts_filtered (" TYPE_DATA_SPACE");
5079 if (TYPE_ADDRESS_CLASS_1 (type
))
5081 puts_filtered (" TYPE_ADDRESS_CLASS_1");
5083 if (TYPE_ADDRESS_CLASS_2 (type
))
5085 puts_filtered (" TYPE_ADDRESS_CLASS_2");
5087 if (TYPE_RESTRICT (type
))
5089 puts_filtered (" TYPE_RESTRICT");
5091 if (TYPE_ATOMIC (type
))
5093 puts_filtered (" TYPE_ATOMIC");
5095 puts_filtered ("\n");
5097 printfi_filtered (spaces
, "flags");
5098 if (type
->is_unsigned ())
5100 puts_filtered (" TYPE_UNSIGNED");
5102 if (type
->has_no_signedness ())
5104 puts_filtered (" TYPE_NOSIGN");
5106 if (type
->endianity_is_not_default ())
5108 puts_filtered (" TYPE_ENDIANITY_NOT_DEFAULT");
5110 if (type
->is_stub ())
5112 puts_filtered (" TYPE_STUB");
5114 if (type
->target_is_stub ())
5116 puts_filtered (" TYPE_TARGET_STUB");
5118 if (type
->is_prototyped ())
5120 puts_filtered (" TYPE_PROTOTYPED");
5122 if (type
->has_varargs ())
5124 puts_filtered (" TYPE_VARARGS");
5126 /* This is used for things like AltiVec registers on ppc. Gcc emits
5127 an attribute for the array type, which tells whether or not we
5128 have a vector, instead of a regular array. */
5129 if (type
->is_vector ())
5131 puts_filtered (" TYPE_VECTOR");
5133 if (type
->is_fixed_instance ())
5135 puts_filtered (" TYPE_FIXED_INSTANCE");
5137 if (type
->stub_is_supported ())
5139 puts_filtered (" TYPE_STUB_SUPPORTED");
5141 if (TYPE_NOTTEXT (type
))
5143 puts_filtered (" TYPE_NOTTEXT");
5145 puts_filtered ("\n");
5146 printfi_filtered (spaces
, "nfields %d ", type
->num_fields ());
5147 gdb_print_host_address (type
->fields (), gdb_stdout
);
5148 puts_filtered ("\n");
5149 for (idx
= 0; idx
< type
->num_fields (); idx
++)
5151 if (type
->code () == TYPE_CODE_ENUM
)
5152 printfi_filtered (spaces
+ 2,
5153 "[%d] enumval %s type ",
5154 idx
, plongest (TYPE_FIELD_ENUMVAL (type
, idx
)));
5156 printfi_filtered (spaces
+ 2,
5157 "[%d] bitpos %s bitsize %d type ",
5158 idx
, plongest (TYPE_FIELD_BITPOS (type
, idx
)),
5159 TYPE_FIELD_BITSIZE (type
, idx
));
5160 gdb_print_host_address (type
->field (idx
).type (), gdb_stdout
);
5161 printf_filtered (" name '%s' (",
5162 TYPE_FIELD_NAME (type
, idx
) != NULL
5163 ? TYPE_FIELD_NAME (type
, idx
)
5165 gdb_print_host_address (TYPE_FIELD_NAME (type
, idx
), gdb_stdout
);
5166 printf_filtered (")\n");
5167 if (type
->field (idx
).type () != NULL
)
5169 recursive_dump_type (type
->field (idx
).type (), spaces
+ 4);
5172 if (type
->code () == TYPE_CODE_RANGE
)
5174 printfi_filtered (spaces
, "low ");
5175 dump_dynamic_prop (type
->bounds ()->low
);
5176 printf_filtered (" high ");
5177 dump_dynamic_prop (type
->bounds ()->high
);
5178 printf_filtered ("\n");
5181 switch (TYPE_SPECIFIC_FIELD (type
))
5183 case TYPE_SPECIFIC_CPLUS_STUFF
:
5184 printfi_filtered (spaces
, "cplus_stuff ");
5185 gdb_print_host_address (TYPE_CPLUS_SPECIFIC (type
),
5187 puts_filtered ("\n");
5188 print_cplus_stuff (type
, spaces
);
5191 case TYPE_SPECIFIC_GNAT_STUFF
:
5192 printfi_filtered (spaces
, "gnat_stuff ");
5193 gdb_print_host_address (TYPE_GNAT_SPECIFIC (type
), gdb_stdout
);
5194 puts_filtered ("\n");
5195 print_gnat_stuff (type
, spaces
);
5198 case TYPE_SPECIFIC_FLOATFORMAT
:
5199 printfi_filtered (spaces
, "floatformat ");
5200 if (TYPE_FLOATFORMAT (type
) == NULL
5201 || TYPE_FLOATFORMAT (type
)->name
== NULL
)
5202 puts_filtered ("(null)");
5204 puts_filtered (TYPE_FLOATFORMAT (type
)->name
);
5205 puts_filtered ("\n");
5208 case TYPE_SPECIFIC_FUNC
:
5209 printfi_filtered (spaces
, "calling_convention %d\n",
5210 TYPE_CALLING_CONVENTION (type
));
5211 /* tail_call_list is not printed. */
5214 case TYPE_SPECIFIC_SELF_TYPE
:
5215 printfi_filtered (spaces
, "self_type ");
5216 gdb_print_host_address (TYPE_SELF_TYPE (type
), gdb_stdout
);
5217 puts_filtered ("\n");
5220 case TYPE_SPECIFIC_INT
:
5221 if (type
->bit_size_differs_p ())
5223 unsigned bit_size
= type
->bit_size ();
5224 unsigned bit_off
= type
->bit_offset ();
5225 printfi_filtered (spaces
, " bit size = %u, bit offset = %u\n",
5232 obstack_free (&dont_print_type_obstack
, NULL
);
5235 /* Trivial helpers for the libiberty hash table, for mapping one
5238 struct type_pair
: public allocate_on_obstack
5240 type_pair (struct type
*old_
, struct type
*newobj_
)
5241 : old (old_
), newobj (newobj_
)
5244 struct type
* const old
, * const newobj
;
5248 type_pair_hash (const void *item
)
5250 const struct type_pair
*pair
= (const struct type_pair
*) item
;
5252 return htab_hash_pointer (pair
->old
);
5256 type_pair_eq (const void *item_lhs
, const void *item_rhs
)
5258 const struct type_pair
*lhs
= (const struct type_pair
*) item_lhs
;
5259 const struct type_pair
*rhs
= (const struct type_pair
*) item_rhs
;
5261 return lhs
->old
== rhs
->old
;
5264 /* Allocate the hash table used by copy_type_recursive to walk
5265 types without duplicates. We use OBJFILE's obstack, because
5266 OBJFILE is about to be deleted. */
5269 create_copied_types_hash (struct objfile
*objfile
)
5271 return htab_up (htab_create_alloc_ex (1, type_pair_hash
, type_pair_eq
,
5272 NULL
, &objfile
->objfile_obstack
,
5273 hashtab_obstack_allocate
,
5274 dummy_obstack_deallocate
));
5277 /* Recursively copy (deep copy) a dynamic attribute list of a type. */
5279 static struct dynamic_prop_list
*
5280 copy_dynamic_prop_list (struct obstack
*objfile_obstack
,
5281 struct dynamic_prop_list
*list
)
5283 struct dynamic_prop_list
*copy
= list
;
5284 struct dynamic_prop_list
**node_ptr
= ©
;
5286 while (*node_ptr
!= NULL
)
5288 struct dynamic_prop_list
*node_copy
;
5290 node_copy
= ((struct dynamic_prop_list
*)
5291 obstack_copy (objfile_obstack
, *node_ptr
,
5292 sizeof (struct dynamic_prop_list
)));
5293 node_copy
->prop
= (*node_ptr
)->prop
;
5294 *node_ptr
= node_copy
;
5296 node_ptr
= &node_copy
->next
;
5302 /* Recursively copy (deep copy) TYPE, if it is associated with
5303 OBJFILE. Return a new type owned by the gdbarch associated with the type, a
5304 saved type if we have already visited TYPE (using COPIED_TYPES), or TYPE if
5305 it is not associated with OBJFILE. */
5308 copy_type_recursive (struct objfile
*objfile
,
5310 htab_t copied_types
)
5313 struct type
*new_type
;
5315 if (! TYPE_OBJFILE_OWNED (type
))
5318 /* This type shouldn't be pointing to any types in other objfiles;
5319 if it did, the type might disappear unexpectedly. */
5320 gdb_assert (TYPE_OBJFILE (type
) == objfile
);
5322 struct type_pair
pair (type
, nullptr);
5324 slot
= htab_find_slot (copied_types
, &pair
, INSERT
);
5326 return ((struct type_pair
*) *slot
)->newobj
;
5328 new_type
= alloc_type_arch (get_type_arch (type
));
5330 /* We must add the new type to the hash table immediately, in case
5331 we encounter this type again during a recursive call below. */
5332 struct type_pair
*stored
5333 = new (&objfile
->objfile_obstack
) struct type_pair (type
, new_type
);
5337 /* Copy the common fields of types. For the main type, we simply
5338 copy the entire thing and then update specific fields as needed. */
5339 *TYPE_MAIN_TYPE (new_type
) = *TYPE_MAIN_TYPE (type
);
5340 TYPE_OBJFILE_OWNED (new_type
) = 0;
5341 TYPE_OWNER (new_type
).gdbarch
= get_type_arch (type
);
5344 new_type
->set_name (xstrdup (type
->name ()));
5346 new_type
->set_instance_flags (type
->instance_flags ());
5347 TYPE_LENGTH (new_type
) = TYPE_LENGTH (type
);
5349 /* Copy the fields. */
5350 if (type
->num_fields ())
5354 nfields
= type
->num_fields ();
5355 new_type
->set_fields
5357 TYPE_ZALLOC (new_type
, nfields
* sizeof (struct field
)));
5359 for (i
= 0; i
< nfields
; i
++)
5361 TYPE_FIELD_ARTIFICIAL (new_type
, i
) =
5362 TYPE_FIELD_ARTIFICIAL (type
, i
);
5363 TYPE_FIELD_BITSIZE (new_type
, i
) = TYPE_FIELD_BITSIZE (type
, i
);
5364 if (type
->field (i
).type ())
5365 new_type
->field (i
).set_type
5366 (copy_type_recursive (objfile
, type
->field (i
).type (),
5368 if (TYPE_FIELD_NAME (type
, i
))
5369 TYPE_FIELD_NAME (new_type
, i
) =
5370 xstrdup (TYPE_FIELD_NAME (type
, i
));
5371 switch (TYPE_FIELD_LOC_KIND (type
, i
))
5373 case FIELD_LOC_KIND_BITPOS
:
5374 SET_FIELD_BITPOS (new_type
->field (i
),
5375 TYPE_FIELD_BITPOS (type
, i
));
5377 case FIELD_LOC_KIND_ENUMVAL
:
5378 SET_FIELD_ENUMVAL (new_type
->field (i
),
5379 TYPE_FIELD_ENUMVAL (type
, i
));
5381 case FIELD_LOC_KIND_PHYSADDR
:
5382 SET_FIELD_PHYSADDR (new_type
->field (i
),
5383 TYPE_FIELD_STATIC_PHYSADDR (type
, i
));
5385 case FIELD_LOC_KIND_PHYSNAME
:
5386 SET_FIELD_PHYSNAME (new_type
->field (i
),
5387 xstrdup (TYPE_FIELD_STATIC_PHYSNAME (type
,
5391 internal_error (__FILE__
, __LINE__
,
5392 _("Unexpected type field location kind: %d"),
5393 TYPE_FIELD_LOC_KIND (type
, i
));
5398 /* For range types, copy the bounds information. */
5399 if (type
->code () == TYPE_CODE_RANGE
)
5401 range_bounds
*bounds
5402 = ((struct range_bounds
*) TYPE_ALLOC
5403 (new_type
, sizeof (struct range_bounds
)));
5405 *bounds
= *type
->bounds ();
5406 new_type
->set_bounds (bounds
);
5409 if (type
->main_type
->dyn_prop_list
!= NULL
)
5410 new_type
->main_type
->dyn_prop_list
5411 = copy_dynamic_prop_list (&objfile
->objfile_obstack
,
5412 type
->main_type
->dyn_prop_list
);
5415 /* Copy pointers to other types. */
5416 if (TYPE_TARGET_TYPE (type
))
5417 TYPE_TARGET_TYPE (new_type
) =
5418 copy_type_recursive (objfile
,
5419 TYPE_TARGET_TYPE (type
),
5422 /* Maybe copy the type_specific bits.
5424 NOTE drow/2005-12-09: We do not copy the C++-specific bits like
5425 base classes and methods. There's no fundamental reason why we
5426 can't, but at the moment it is not needed. */
5428 switch (TYPE_SPECIFIC_FIELD (type
))
5430 case TYPE_SPECIFIC_NONE
:
5432 case TYPE_SPECIFIC_FUNC
:
5433 INIT_FUNC_SPECIFIC (new_type
);
5434 TYPE_CALLING_CONVENTION (new_type
) = TYPE_CALLING_CONVENTION (type
);
5435 TYPE_NO_RETURN (new_type
) = TYPE_NO_RETURN (type
);
5436 TYPE_TAIL_CALL_LIST (new_type
) = NULL
;
5438 case TYPE_SPECIFIC_FLOATFORMAT
:
5439 TYPE_FLOATFORMAT (new_type
) = TYPE_FLOATFORMAT (type
);
5441 case TYPE_SPECIFIC_CPLUS_STUFF
:
5442 INIT_CPLUS_SPECIFIC (new_type
);
5444 case TYPE_SPECIFIC_GNAT_STUFF
:
5445 INIT_GNAT_SPECIFIC (new_type
);
5447 case TYPE_SPECIFIC_SELF_TYPE
:
5448 set_type_self_type (new_type
,
5449 copy_type_recursive (objfile
, TYPE_SELF_TYPE (type
),
5452 case TYPE_SPECIFIC_INT
:
5453 TYPE_SPECIFIC_FIELD (new_type
) = TYPE_SPECIFIC_INT
;
5454 TYPE_MAIN_TYPE (new_type
)->type_specific
.int_stuff
5455 = TYPE_MAIN_TYPE (type
)->type_specific
.int_stuff
;
5459 gdb_assert_not_reached ("bad type_specific_kind");
5465 /* Make a copy of the given TYPE, except that the pointer & reference
5466 types are not preserved.
5468 This function assumes that the given type has an associated objfile.
5469 This objfile is used to allocate the new type. */
5472 copy_type (const struct type
*type
)
5474 struct type
*new_type
;
5476 gdb_assert (TYPE_OBJFILE_OWNED (type
));
5478 new_type
= alloc_type_copy (type
);
5479 new_type
->set_instance_flags (type
->instance_flags ());
5480 TYPE_LENGTH (new_type
) = TYPE_LENGTH (type
);
5481 memcpy (TYPE_MAIN_TYPE (new_type
), TYPE_MAIN_TYPE (type
),
5482 sizeof (struct main_type
));
5483 if (type
->main_type
->dyn_prop_list
!= NULL
)
5484 new_type
->main_type
->dyn_prop_list
5485 = copy_dynamic_prop_list (&TYPE_OBJFILE (type
) -> objfile_obstack
,
5486 type
->main_type
->dyn_prop_list
);
5491 /* Helper functions to initialize architecture-specific types. */
5493 /* Allocate a type structure associated with GDBARCH and set its
5494 CODE, LENGTH, and NAME fields. */
5497 arch_type (struct gdbarch
*gdbarch
,
5498 enum type_code code
, int bit
, const char *name
)
5502 type
= alloc_type_arch (gdbarch
);
5503 set_type_code (type
, code
);
5504 gdb_assert ((bit
% TARGET_CHAR_BIT
) == 0);
5505 TYPE_LENGTH (type
) = bit
/ TARGET_CHAR_BIT
;
5508 type
->set_name (gdbarch_obstack_strdup (gdbarch
, name
));
5513 /* Allocate a TYPE_CODE_INT type structure associated with GDBARCH.
5514 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
5515 the type's TYPE_UNSIGNED flag. NAME is the type name. */
5518 arch_integer_type (struct gdbarch
*gdbarch
,
5519 int bit
, int unsigned_p
, const char *name
)
5523 t
= arch_type (gdbarch
, TYPE_CODE_INT
, bit
, name
);
5525 t
->set_is_unsigned (true);
5530 /* Allocate a TYPE_CODE_CHAR type structure associated with GDBARCH.
5531 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
5532 the type's TYPE_UNSIGNED flag. NAME is the type name. */
5535 arch_character_type (struct gdbarch
*gdbarch
,
5536 int bit
, int unsigned_p
, const char *name
)
5540 t
= arch_type (gdbarch
, TYPE_CODE_CHAR
, bit
, name
);
5542 t
->set_is_unsigned (true);
5547 /* Allocate a TYPE_CODE_BOOL type structure associated with GDBARCH.
5548 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
5549 the type's TYPE_UNSIGNED flag. NAME is the type name. */
5552 arch_boolean_type (struct gdbarch
*gdbarch
,
5553 int bit
, int unsigned_p
, const char *name
)
5557 t
= arch_type (gdbarch
, TYPE_CODE_BOOL
, bit
, name
);
5559 t
->set_is_unsigned (true);
5564 /* Allocate a TYPE_CODE_FLT type structure associated with GDBARCH.
5565 BIT is the type size in bits; if BIT equals -1, the size is
5566 determined by the floatformat. NAME is the type name. Set the
5567 TYPE_FLOATFORMAT from FLOATFORMATS. */
5570 arch_float_type (struct gdbarch
*gdbarch
,
5571 int bit
, const char *name
,
5572 const struct floatformat
**floatformats
)
5574 const struct floatformat
*fmt
= floatformats
[gdbarch_byte_order (gdbarch
)];
5577 bit
= verify_floatformat (bit
, fmt
);
5578 t
= arch_type (gdbarch
, TYPE_CODE_FLT
, bit
, name
);
5579 TYPE_FLOATFORMAT (t
) = fmt
;
5584 /* Allocate a TYPE_CODE_DECFLOAT type structure associated with GDBARCH.
5585 BIT is the type size in bits. NAME is the type name. */
5588 arch_decfloat_type (struct gdbarch
*gdbarch
, int bit
, const char *name
)
5592 t
= arch_type (gdbarch
, TYPE_CODE_DECFLOAT
, bit
, name
);
5596 /* Allocate a TYPE_CODE_PTR type structure associated with GDBARCH.
5597 BIT is the pointer type size in bits. NAME is the type name.
5598 TARGET_TYPE is the pointer target type. Always sets the pointer type's
5599 TYPE_UNSIGNED flag. */
5602 arch_pointer_type (struct gdbarch
*gdbarch
,
5603 int bit
, const char *name
, struct type
*target_type
)
5607 t
= arch_type (gdbarch
, TYPE_CODE_PTR
, bit
, name
);
5608 TYPE_TARGET_TYPE (t
) = target_type
;
5609 t
->set_is_unsigned (true);
5613 /* Allocate a TYPE_CODE_FLAGS type structure associated with GDBARCH.
5614 NAME is the type name. BIT is the size of the flag word in bits. */
5617 arch_flags_type (struct gdbarch
*gdbarch
, const char *name
, int bit
)
5621 type
= arch_type (gdbarch
, TYPE_CODE_FLAGS
, bit
, name
);
5622 type
->set_is_unsigned (true);
5623 type
->set_num_fields (0);
5624 /* Pre-allocate enough space assuming every field is one bit. */
5626 ((struct field
*) TYPE_ZALLOC (type
, bit
* sizeof (struct field
)));
5631 /* Add field to TYPE_CODE_FLAGS type TYPE to indicate the bit at
5632 position BITPOS is called NAME. Pass NAME as "" for fields that
5633 should not be printed. */
5636 append_flags_type_field (struct type
*type
, int start_bitpos
, int nr_bits
,
5637 struct type
*field_type
, const char *name
)
5639 int type_bitsize
= TYPE_LENGTH (type
) * TARGET_CHAR_BIT
;
5640 int field_nr
= type
->num_fields ();
5642 gdb_assert (type
->code () == TYPE_CODE_FLAGS
);
5643 gdb_assert (type
->num_fields () + 1 <= type_bitsize
);
5644 gdb_assert (start_bitpos
>= 0 && start_bitpos
< type_bitsize
);
5645 gdb_assert (nr_bits
>= 1 && nr_bits
<= type_bitsize
);
5646 gdb_assert (name
!= NULL
);
5648 TYPE_FIELD_NAME (type
, field_nr
) = xstrdup (name
);
5649 type
->field (field_nr
).set_type (field_type
);
5650 SET_FIELD_BITPOS (type
->field (field_nr
), start_bitpos
);
5651 TYPE_FIELD_BITSIZE (type
, field_nr
) = nr_bits
;
5652 type
->set_num_fields (type
->num_fields () + 1);
5655 /* Special version of append_flags_type_field to add a flag field.
5656 Add field to TYPE_CODE_FLAGS type TYPE to indicate the bit at
5657 position BITPOS is called NAME. */
5660 append_flags_type_flag (struct type
*type
, int bitpos
, const char *name
)
5662 struct gdbarch
*gdbarch
= get_type_arch (type
);
5664 append_flags_type_field (type
, bitpos
, 1,
5665 builtin_type (gdbarch
)->builtin_bool
,
5669 /* Allocate a TYPE_CODE_STRUCT or TYPE_CODE_UNION type structure (as
5670 specified by CODE) associated with GDBARCH. NAME is the type name. */
5673 arch_composite_type (struct gdbarch
*gdbarch
, const char *name
,
5674 enum type_code code
)
5678 gdb_assert (code
== TYPE_CODE_STRUCT
|| code
== TYPE_CODE_UNION
);
5679 t
= arch_type (gdbarch
, code
, 0, NULL
);
5681 INIT_CPLUS_SPECIFIC (t
);
5685 /* Add new field with name NAME and type FIELD to composite type T.
5686 Do not set the field's position or adjust the type's length;
5687 the caller should do so. Return the new field. */
5690 append_composite_type_field_raw (struct type
*t
, const char *name
,
5695 t
->set_num_fields (t
->num_fields () + 1);
5696 t
->set_fields (XRESIZEVEC (struct field
, t
->fields (),
5698 f
= &t
->field (t
->num_fields () - 1);
5699 memset (f
, 0, sizeof f
[0]);
5700 f
[0].set_type (field
);
5701 FIELD_NAME (f
[0]) = name
;
5705 /* Add new field with name NAME and type FIELD to composite type T.
5706 ALIGNMENT (if non-zero) specifies the minimum field alignment. */
5709 append_composite_type_field_aligned (struct type
*t
, const char *name
,
5710 struct type
*field
, int alignment
)
5712 struct field
*f
= append_composite_type_field_raw (t
, name
, field
);
5714 if (t
->code () == TYPE_CODE_UNION
)
5716 if (TYPE_LENGTH (t
) < TYPE_LENGTH (field
))
5717 TYPE_LENGTH (t
) = TYPE_LENGTH (field
);
5719 else if (t
->code () == TYPE_CODE_STRUCT
)
5721 TYPE_LENGTH (t
) = TYPE_LENGTH (t
) + TYPE_LENGTH (field
);
5722 if (t
->num_fields () > 1)
5724 SET_FIELD_BITPOS (f
[0],
5725 (FIELD_BITPOS (f
[-1])
5726 + (TYPE_LENGTH (f
[-1].type ())
5727 * TARGET_CHAR_BIT
)));
5733 alignment
*= TARGET_CHAR_BIT
;
5734 left
= FIELD_BITPOS (f
[0]) % alignment
;
5738 SET_FIELD_BITPOS (f
[0], FIELD_BITPOS (f
[0]) + (alignment
- left
));
5739 TYPE_LENGTH (t
) += (alignment
- left
) / TARGET_CHAR_BIT
;
5746 /* Add new field with name NAME and type FIELD to composite type T. */
5749 append_composite_type_field (struct type
*t
, const char *name
,
5752 append_composite_type_field_aligned (t
, name
, field
, 0);
5755 static struct gdbarch_data
*gdbtypes_data
;
5757 const struct builtin_type
*
5758 builtin_type (struct gdbarch
*gdbarch
)
5760 return (const struct builtin_type
*) gdbarch_data (gdbarch
, gdbtypes_data
);
5764 gdbtypes_post_init (struct gdbarch
*gdbarch
)
5766 struct builtin_type
*builtin_type
5767 = GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct builtin_type
);
5770 builtin_type
->builtin_void
5771 = arch_type (gdbarch
, TYPE_CODE_VOID
, TARGET_CHAR_BIT
, "void");
5772 builtin_type
->builtin_char
5773 = arch_integer_type (gdbarch
, TARGET_CHAR_BIT
,
5774 !gdbarch_char_signed (gdbarch
), "char");
5775 builtin_type
->builtin_char
->set_has_no_signedness (true);
5776 builtin_type
->builtin_signed_char
5777 = arch_integer_type (gdbarch
, TARGET_CHAR_BIT
,
5779 builtin_type
->builtin_unsigned_char
5780 = arch_integer_type (gdbarch
, TARGET_CHAR_BIT
,
5781 1, "unsigned char");
5782 builtin_type
->builtin_short
5783 = arch_integer_type (gdbarch
, gdbarch_short_bit (gdbarch
),
5785 builtin_type
->builtin_unsigned_short
5786 = arch_integer_type (gdbarch
, gdbarch_short_bit (gdbarch
),
5787 1, "unsigned short");
5788 builtin_type
->builtin_int
5789 = arch_integer_type (gdbarch
, gdbarch_int_bit (gdbarch
),
5791 builtin_type
->builtin_unsigned_int
5792 = arch_integer_type (gdbarch
, gdbarch_int_bit (gdbarch
),
5794 builtin_type
->builtin_long
5795 = arch_integer_type (gdbarch
, gdbarch_long_bit (gdbarch
),
5797 builtin_type
->builtin_unsigned_long
5798 = arch_integer_type (gdbarch
, gdbarch_long_bit (gdbarch
),
5799 1, "unsigned long");
5800 builtin_type
->builtin_long_long
5801 = arch_integer_type (gdbarch
, gdbarch_long_long_bit (gdbarch
),
5803 builtin_type
->builtin_unsigned_long_long
5804 = arch_integer_type (gdbarch
, gdbarch_long_long_bit (gdbarch
),
5805 1, "unsigned long long");
5806 builtin_type
->builtin_half
5807 = arch_float_type (gdbarch
, gdbarch_half_bit (gdbarch
),
5808 "half", gdbarch_half_format (gdbarch
));
5809 builtin_type
->builtin_float
5810 = arch_float_type (gdbarch
, gdbarch_float_bit (gdbarch
),
5811 "float", gdbarch_float_format (gdbarch
));
5812 builtin_type
->builtin_bfloat16
5813 = arch_float_type (gdbarch
, gdbarch_bfloat16_bit (gdbarch
),
5814 "bfloat16", gdbarch_bfloat16_format (gdbarch
));
5815 builtin_type
->builtin_double
5816 = arch_float_type (gdbarch
, gdbarch_double_bit (gdbarch
),
5817 "double", gdbarch_double_format (gdbarch
));
5818 builtin_type
->builtin_long_double
5819 = arch_float_type (gdbarch
, gdbarch_long_double_bit (gdbarch
),
5820 "long double", gdbarch_long_double_format (gdbarch
));
5821 builtin_type
->builtin_complex
5822 = init_complex_type ("complex", builtin_type
->builtin_float
);
5823 builtin_type
->builtin_double_complex
5824 = init_complex_type ("double complex", builtin_type
->builtin_double
);
5825 builtin_type
->builtin_string
5826 = arch_type (gdbarch
, TYPE_CODE_STRING
, TARGET_CHAR_BIT
, "string");
5827 builtin_type
->builtin_bool
5828 = arch_type (gdbarch
, TYPE_CODE_BOOL
, TARGET_CHAR_BIT
, "bool");
5830 /* The following three are about decimal floating point types, which
5831 are 32-bits, 64-bits and 128-bits respectively. */
5832 builtin_type
->builtin_decfloat
5833 = arch_decfloat_type (gdbarch
, 32, "_Decimal32");
5834 builtin_type
->builtin_decdouble
5835 = arch_decfloat_type (gdbarch
, 64, "_Decimal64");
5836 builtin_type
->builtin_declong
5837 = arch_decfloat_type (gdbarch
, 128, "_Decimal128");
5839 /* "True" character types. */
5840 builtin_type
->builtin_true_char
5841 = arch_character_type (gdbarch
, TARGET_CHAR_BIT
, 0, "true character");
5842 builtin_type
->builtin_true_unsigned_char
5843 = arch_character_type (gdbarch
, TARGET_CHAR_BIT
, 1, "true character");
5845 /* Fixed-size integer types. */
5846 builtin_type
->builtin_int0
5847 = arch_integer_type (gdbarch
, 0, 0, "int0_t");
5848 builtin_type
->builtin_int8
5849 = arch_integer_type (gdbarch
, 8, 0, "int8_t");
5850 builtin_type
->builtin_uint8
5851 = arch_integer_type (gdbarch
, 8, 1, "uint8_t");
5852 builtin_type
->builtin_int16
5853 = arch_integer_type (gdbarch
, 16, 0, "int16_t");
5854 builtin_type
->builtin_uint16
5855 = arch_integer_type (gdbarch
, 16, 1, "uint16_t");
5856 builtin_type
->builtin_int24
5857 = arch_integer_type (gdbarch
, 24, 0, "int24_t");
5858 builtin_type
->builtin_uint24
5859 = arch_integer_type (gdbarch
, 24, 1, "uint24_t");
5860 builtin_type
->builtin_int32
5861 = arch_integer_type (gdbarch
, 32, 0, "int32_t");
5862 builtin_type
->builtin_uint32
5863 = arch_integer_type (gdbarch
, 32, 1, "uint32_t");
5864 builtin_type
->builtin_int64
5865 = arch_integer_type (gdbarch
, 64, 0, "int64_t");
5866 builtin_type
->builtin_uint64
5867 = arch_integer_type (gdbarch
, 64, 1, "uint64_t");
5868 builtin_type
->builtin_int128
5869 = arch_integer_type (gdbarch
, 128, 0, "int128_t");
5870 builtin_type
->builtin_uint128
5871 = arch_integer_type (gdbarch
, 128, 1, "uint128_t");
5873 builtin_type
->builtin_int8
->set_instance_flags
5874 (builtin_type
->builtin_int8
->instance_flags ()
5875 | TYPE_INSTANCE_FLAG_NOTTEXT
);
5877 builtin_type
->builtin_uint8
->set_instance_flags
5878 (builtin_type
->builtin_uint8
->instance_flags ()
5879 | TYPE_INSTANCE_FLAG_NOTTEXT
);
5881 /* Wide character types. */
5882 builtin_type
->builtin_char16
5883 = arch_integer_type (gdbarch
, 16, 1, "char16_t");
5884 builtin_type
->builtin_char32
5885 = arch_integer_type (gdbarch
, 32, 1, "char32_t");
5886 builtin_type
->builtin_wchar
5887 = arch_integer_type (gdbarch
, gdbarch_wchar_bit (gdbarch
),
5888 !gdbarch_wchar_signed (gdbarch
), "wchar_t");
5890 /* Default data/code pointer types. */
5891 builtin_type
->builtin_data_ptr
5892 = lookup_pointer_type (builtin_type
->builtin_void
);
5893 builtin_type
->builtin_func_ptr
5894 = lookup_pointer_type (lookup_function_type (builtin_type
->builtin_void
));
5895 builtin_type
->builtin_func_func
5896 = lookup_function_type (builtin_type
->builtin_func_ptr
);
5898 /* This type represents a GDB internal function. */
5899 builtin_type
->internal_fn
5900 = arch_type (gdbarch
, TYPE_CODE_INTERNAL_FUNCTION
, 0,
5901 "<internal function>");
5903 /* This type represents an xmethod. */
5904 builtin_type
->xmethod
5905 = arch_type (gdbarch
, TYPE_CODE_XMETHOD
, 0, "<xmethod>");
5907 return builtin_type
;
5910 /* This set of objfile-based types is intended to be used by symbol
5911 readers as basic types. */
5913 static const struct objfile_key
<struct objfile_type
,
5914 gdb::noop_deleter
<struct objfile_type
>>
5917 const struct objfile_type
*
5918 objfile_type (struct objfile
*objfile
)
5920 struct gdbarch
*gdbarch
;
5921 struct objfile_type
*objfile_type
= objfile_type_data
.get (objfile
);
5924 return objfile_type
;
5926 objfile_type
= OBSTACK_CALLOC (&objfile
->objfile_obstack
,
5927 1, struct objfile_type
);
5929 /* Use the objfile architecture to determine basic type properties. */
5930 gdbarch
= objfile
->arch ();
5933 objfile_type
->builtin_void
5934 = init_type (objfile
, TYPE_CODE_VOID
, TARGET_CHAR_BIT
, "void");
5935 objfile_type
->builtin_char
5936 = init_integer_type (objfile
, TARGET_CHAR_BIT
,
5937 !gdbarch_char_signed (gdbarch
), "char");
5938 objfile_type
->builtin_char
->set_has_no_signedness (true);
5939 objfile_type
->builtin_signed_char
5940 = init_integer_type (objfile
, TARGET_CHAR_BIT
,
5942 objfile_type
->builtin_unsigned_char
5943 = init_integer_type (objfile
, TARGET_CHAR_BIT
,
5944 1, "unsigned char");
5945 objfile_type
->builtin_short
5946 = init_integer_type (objfile
, gdbarch_short_bit (gdbarch
),
5948 objfile_type
->builtin_unsigned_short
5949 = init_integer_type (objfile
, gdbarch_short_bit (gdbarch
),
5950 1, "unsigned short");
5951 objfile_type
->builtin_int
5952 = init_integer_type (objfile
, gdbarch_int_bit (gdbarch
),
5954 objfile_type
->builtin_unsigned_int
5955 = init_integer_type (objfile
, gdbarch_int_bit (gdbarch
),
5957 objfile_type
->builtin_long
5958 = init_integer_type (objfile
, gdbarch_long_bit (gdbarch
),
5960 objfile_type
->builtin_unsigned_long
5961 = init_integer_type (objfile
, gdbarch_long_bit (gdbarch
),
5962 1, "unsigned long");
5963 objfile_type
->builtin_long_long
5964 = init_integer_type (objfile
, gdbarch_long_long_bit (gdbarch
),
5966 objfile_type
->builtin_unsigned_long_long
5967 = init_integer_type (objfile
, gdbarch_long_long_bit (gdbarch
),
5968 1, "unsigned long long");
5969 objfile_type
->builtin_float
5970 = init_float_type (objfile
, gdbarch_float_bit (gdbarch
),
5971 "float", gdbarch_float_format (gdbarch
));
5972 objfile_type
->builtin_double
5973 = init_float_type (objfile
, gdbarch_double_bit (gdbarch
),
5974 "double", gdbarch_double_format (gdbarch
));
5975 objfile_type
->builtin_long_double
5976 = init_float_type (objfile
, gdbarch_long_double_bit (gdbarch
),
5977 "long double", gdbarch_long_double_format (gdbarch
));
5979 /* This type represents a type that was unrecognized in symbol read-in. */
5980 objfile_type
->builtin_error
5981 = init_type (objfile
, TYPE_CODE_ERROR
, 0, "<unknown type>");
5983 /* The following set of types is used for symbols with no
5984 debug information. */
5985 objfile_type
->nodebug_text_symbol
5986 = init_type (objfile
, TYPE_CODE_FUNC
, TARGET_CHAR_BIT
,
5987 "<text variable, no debug info>");
5989 objfile_type
->nodebug_text_gnu_ifunc_symbol
5990 = init_type (objfile
, TYPE_CODE_FUNC
, TARGET_CHAR_BIT
,
5991 "<text gnu-indirect-function variable, no debug info>");
5992 objfile_type
->nodebug_text_gnu_ifunc_symbol
->set_is_gnu_ifunc (true);
5994 objfile_type
->nodebug_got_plt_symbol
5995 = init_pointer_type (objfile
, gdbarch_addr_bit (gdbarch
),
5996 "<text from jump slot in .got.plt, no debug info>",
5997 objfile_type
->nodebug_text_symbol
);
5998 objfile_type
->nodebug_data_symbol
5999 = init_nodebug_var_type (objfile
, "<data variable, no debug info>");
6000 objfile_type
->nodebug_unknown_symbol
6001 = init_nodebug_var_type (objfile
, "<variable (not text or data), no debug info>");
6002 objfile_type
->nodebug_tls_symbol
6003 = init_nodebug_var_type (objfile
, "<thread local variable, no debug info>");
6005 /* NOTE: on some targets, addresses and pointers are not necessarily
6009 - gdb's `struct type' always describes the target's
6011 - gdb's `struct value' objects should always hold values in
6013 - gdb's CORE_ADDR values are addresses in the unified virtual
6014 address space that the assembler and linker work with. Thus,
6015 since target_read_memory takes a CORE_ADDR as an argument, it
6016 can access any memory on the target, even if the processor has
6017 separate code and data address spaces.
6019 In this context, objfile_type->builtin_core_addr is a bit odd:
6020 it's a target type for a value the target will never see. It's
6021 only used to hold the values of (typeless) linker symbols, which
6022 are indeed in the unified virtual address space. */
6024 objfile_type
->builtin_core_addr
6025 = init_integer_type (objfile
, gdbarch_addr_bit (gdbarch
), 1,
6028 objfile_type_data
.set (objfile
, objfile_type
);
6029 return objfile_type
;
6032 void _initialize_gdbtypes ();
6034 _initialize_gdbtypes ()
6036 gdbtypes_data
= gdbarch_data_register_post_init (gdbtypes_post_init
);
6038 add_setshow_zuinteger_cmd ("overload", no_class
, &overload_debug
,
6039 _("Set debugging of C++ overloading."),
6040 _("Show debugging of C++ overloading."),
6041 _("When enabled, ranking of the "
6042 "functions is displayed."),
6044 show_overload_debug
,
6045 &setdebuglist
, &showdebuglist
);
6047 /* Add user knob for controlling resolution of opaque types. */
6048 add_setshow_boolean_cmd ("opaque-type-resolution", class_support
,
6049 &opaque_type_resolution
,
6050 _("Set resolution of opaque struct/class/union"
6051 " types (if set before loading symbols)."),
6052 _("Show resolution of opaque struct/class/union"
6053 " types (if set before loading symbols)."),
6055 show_opaque_type_resolution
,
6056 &setlist
, &showlist
);
6058 /* Add an option to permit non-strict type checking. */
6059 add_setshow_boolean_cmd ("type", class_support
,
6060 &strict_type_checking
,
6061 _("Set strict type checking."),
6062 _("Show strict type checking."),
6064 show_strict_type_checking
,
6065 &setchecklist
, &showchecklist
);