1 /* Support routines for manipulating internal types for GDB.
3 Copyright (C) 1992-2017 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 "dwarf2loc.h"
42 /* Initialize BADNESS constants. */
44 const struct rank LENGTH_MISMATCH_BADNESS
= {100,0};
46 const struct rank TOO_FEW_PARAMS_BADNESS
= {100,0};
47 const struct rank INCOMPATIBLE_TYPE_BADNESS
= {100,0};
49 const struct rank EXACT_MATCH_BADNESS
= {0,0};
51 const struct rank INTEGER_PROMOTION_BADNESS
= {1,0};
52 const struct rank FLOAT_PROMOTION_BADNESS
= {1,0};
53 const struct rank BASE_PTR_CONVERSION_BADNESS
= {1,0};
54 const struct rank CV_CONVERSION_BADNESS
= {1, 0};
55 const struct rank INTEGER_CONVERSION_BADNESS
= {2,0};
56 const struct rank FLOAT_CONVERSION_BADNESS
= {2,0};
57 const struct rank INT_FLOAT_CONVERSION_BADNESS
= {2,0};
58 const struct rank VOID_PTR_CONVERSION_BADNESS
= {2,0};
59 const struct rank BOOL_CONVERSION_BADNESS
= {3,0};
60 const struct rank BASE_CONVERSION_BADNESS
= {2,0};
61 const struct rank REFERENCE_CONVERSION_BADNESS
= {2,0};
62 const struct rank NULL_POINTER_CONVERSION_BADNESS
= {2,0};
63 const struct rank NS_POINTER_CONVERSION_BADNESS
= {10,0};
64 const struct rank NS_INTEGER_POINTER_CONVERSION_BADNESS
= {3,0};
66 /* Floatformat pairs. */
67 const struct floatformat
*floatformats_ieee_half
[BFD_ENDIAN_UNKNOWN
] = {
68 &floatformat_ieee_half_big
,
69 &floatformat_ieee_half_little
71 const struct floatformat
*floatformats_ieee_single
[BFD_ENDIAN_UNKNOWN
] = {
72 &floatformat_ieee_single_big
,
73 &floatformat_ieee_single_little
75 const struct floatformat
*floatformats_ieee_double
[BFD_ENDIAN_UNKNOWN
] = {
76 &floatformat_ieee_double_big
,
77 &floatformat_ieee_double_little
79 const struct floatformat
*floatformats_ieee_double_littlebyte_bigword
[BFD_ENDIAN_UNKNOWN
] = {
80 &floatformat_ieee_double_big
,
81 &floatformat_ieee_double_littlebyte_bigword
83 const struct floatformat
*floatformats_i387_ext
[BFD_ENDIAN_UNKNOWN
] = {
84 &floatformat_i387_ext
,
87 const struct floatformat
*floatformats_m68881_ext
[BFD_ENDIAN_UNKNOWN
] = {
88 &floatformat_m68881_ext
,
89 &floatformat_m68881_ext
91 const struct floatformat
*floatformats_arm_ext
[BFD_ENDIAN_UNKNOWN
] = {
92 &floatformat_arm_ext_big
,
93 &floatformat_arm_ext_littlebyte_bigword
95 const struct floatformat
*floatformats_ia64_spill
[BFD_ENDIAN_UNKNOWN
] = {
96 &floatformat_ia64_spill_big
,
97 &floatformat_ia64_spill_little
99 const struct floatformat
*floatformats_ia64_quad
[BFD_ENDIAN_UNKNOWN
] = {
100 &floatformat_ia64_quad_big
,
101 &floatformat_ia64_quad_little
103 const struct floatformat
*floatformats_vax_f
[BFD_ENDIAN_UNKNOWN
] = {
107 const struct floatformat
*floatformats_vax_d
[BFD_ENDIAN_UNKNOWN
] = {
111 const struct floatformat
*floatformats_ibm_long_double
[BFD_ENDIAN_UNKNOWN
] = {
112 &floatformat_ibm_long_double_big
,
113 &floatformat_ibm_long_double_little
116 /* Should opaque types be resolved? */
118 static int opaque_type_resolution
= 1;
120 /* A flag to enable printing of debugging information of C++
123 unsigned int overload_debug
= 0;
125 /* A flag to enable strict type checking. */
127 static int strict_type_checking
= 1;
129 /* A function to show whether opaque types are resolved. */
132 show_opaque_type_resolution (struct ui_file
*file
, int from_tty
,
133 struct cmd_list_element
*c
,
136 fprintf_filtered (file
, _("Resolution of opaque struct/class/union types "
137 "(if set before loading symbols) is %s.\n"),
141 /* A function to show whether C++ overload debugging is enabled. */
144 show_overload_debug (struct ui_file
*file
, int from_tty
,
145 struct cmd_list_element
*c
, const char *value
)
147 fprintf_filtered (file
, _("Debugging of C++ overloading is %s.\n"),
151 /* A function to show the status of strict type checking. */
154 show_strict_type_checking (struct ui_file
*file
, int from_tty
,
155 struct cmd_list_element
*c
, const char *value
)
157 fprintf_filtered (file
, _("Strict type checking is %s.\n"), value
);
161 /* Allocate a new OBJFILE-associated type structure and fill it
162 with some defaults. Space for the type structure is allocated
163 on the objfile's objfile_obstack. */
166 alloc_type (struct objfile
*objfile
)
170 gdb_assert (objfile
!= NULL
);
172 /* Alloc the structure and start off with all fields zeroed. */
173 type
= OBSTACK_ZALLOC (&objfile
->objfile_obstack
, struct type
);
174 TYPE_MAIN_TYPE (type
) = OBSTACK_ZALLOC (&objfile
->objfile_obstack
,
176 OBJSTAT (objfile
, n_types
++);
178 TYPE_OBJFILE_OWNED (type
) = 1;
179 TYPE_OWNER (type
).objfile
= objfile
;
181 /* Initialize the fields that might not be zero. */
183 TYPE_CODE (type
) = TYPE_CODE_UNDEF
;
184 TYPE_CHAIN (type
) = type
; /* Chain back to itself. */
189 /* Allocate a new GDBARCH-associated type structure and fill it
190 with some defaults. Space for the type structure is allocated
191 on the obstack associated with GDBARCH. */
194 alloc_type_arch (struct gdbarch
*gdbarch
)
198 gdb_assert (gdbarch
!= NULL
);
200 /* Alloc the structure and start off with all fields zeroed. */
202 type
= GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct type
);
203 TYPE_MAIN_TYPE (type
) = GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct main_type
);
205 TYPE_OBJFILE_OWNED (type
) = 0;
206 TYPE_OWNER (type
).gdbarch
= gdbarch
;
208 /* Initialize the fields that might not be zero. */
210 TYPE_CODE (type
) = TYPE_CODE_UNDEF
;
211 TYPE_CHAIN (type
) = type
; /* Chain back to itself. */
216 /* If TYPE is objfile-associated, allocate a new type structure
217 associated with the same objfile. If TYPE is gdbarch-associated,
218 allocate a new type structure associated with the same gdbarch. */
221 alloc_type_copy (const struct type
*type
)
223 if (TYPE_OBJFILE_OWNED (type
))
224 return alloc_type (TYPE_OWNER (type
).objfile
);
226 return alloc_type_arch (TYPE_OWNER (type
).gdbarch
);
229 /* If TYPE is gdbarch-associated, return that architecture.
230 If TYPE is objfile-associated, return that objfile's architecture. */
233 get_type_arch (const struct type
*type
)
235 if (TYPE_OBJFILE_OWNED (type
))
236 return get_objfile_arch (TYPE_OWNER (type
).objfile
);
238 return TYPE_OWNER (type
).gdbarch
;
241 /* See gdbtypes.h. */
244 get_target_type (struct type
*type
)
248 type
= TYPE_TARGET_TYPE (type
);
250 type
= check_typedef (type
);
256 /* See gdbtypes.h. */
259 type_length_units (struct type
*type
)
261 struct gdbarch
*arch
= get_type_arch (type
);
262 int unit_size
= gdbarch_addressable_memory_unit_size (arch
);
264 return TYPE_LENGTH (type
) / unit_size
;
267 /* Alloc a new type instance structure, fill it with some defaults,
268 and point it at OLDTYPE. Allocate the new type instance from the
269 same place as OLDTYPE. */
272 alloc_type_instance (struct type
*oldtype
)
276 /* Allocate the structure. */
278 if (! TYPE_OBJFILE_OWNED (oldtype
))
279 type
= XCNEW (struct type
);
281 type
= OBSTACK_ZALLOC (&TYPE_OBJFILE (oldtype
)->objfile_obstack
,
284 TYPE_MAIN_TYPE (type
) = TYPE_MAIN_TYPE (oldtype
);
286 TYPE_CHAIN (type
) = type
; /* Chain back to itself for now. */
291 /* Clear all remnants of the previous type at TYPE, in preparation for
292 replacing it with something else. Preserve owner information. */
295 smash_type (struct type
*type
)
297 int objfile_owned
= TYPE_OBJFILE_OWNED (type
);
298 union type_owner owner
= TYPE_OWNER (type
);
300 memset (TYPE_MAIN_TYPE (type
), 0, sizeof (struct main_type
));
302 /* Restore owner information. */
303 TYPE_OBJFILE_OWNED (type
) = objfile_owned
;
304 TYPE_OWNER (type
) = owner
;
306 /* For now, delete the rings. */
307 TYPE_CHAIN (type
) = type
;
309 /* For now, leave the pointer/reference types alone. */
312 /* Lookup a pointer to a type TYPE. TYPEPTR, if nonzero, points
313 to a pointer to memory where the pointer type should be stored.
314 If *TYPEPTR is zero, update it to point to the pointer type we return.
315 We allocate new memory if needed. */
318 make_pointer_type (struct type
*type
, struct type
**typeptr
)
320 struct type
*ntype
; /* New type */
323 ntype
= TYPE_POINTER_TYPE (type
);
328 return ntype
; /* Don't care about alloc,
329 and have new type. */
330 else if (*typeptr
== 0)
332 *typeptr
= ntype
; /* Tracking alloc, and have new type. */
337 if (typeptr
== 0 || *typeptr
== 0) /* We'll need to allocate one. */
339 ntype
= alloc_type_copy (type
);
343 else /* We have storage, but need to reset it. */
346 chain
= TYPE_CHAIN (ntype
);
348 TYPE_CHAIN (ntype
) = chain
;
351 TYPE_TARGET_TYPE (ntype
) = type
;
352 TYPE_POINTER_TYPE (type
) = ntype
;
354 /* FIXME! Assumes the machine has only one representation for pointers! */
357 = gdbarch_ptr_bit (get_type_arch (type
)) / TARGET_CHAR_BIT
;
358 TYPE_CODE (ntype
) = TYPE_CODE_PTR
;
360 /* Mark pointers as unsigned. The target converts between pointers
361 and addresses (CORE_ADDRs) using gdbarch_pointer_to_address and
362 gdbarch_address_to_pointer. */
363 TYPE_UNSIGNED (ntype
) = 1;
365 /* Update the length of all the other variants of this type. */
366 chain
= TYPE_CHAIN (ntype
);
367 while (chain
!= ntype
)
369 TYPE_LENGTH (chain
) = TYPE_LENGTH (ntype
);
370 chain
= TYPE_CHAIN (chain
);
376 /* Given a type TYPE, return a type of pointers to that type.
377 May need to construct such a type if this is the first use. */
380 lookup_pointer_type (struct type
*type
)
382 return make_pointer_type (type
, (struct type
**) 0);
385 /* Lookup a C++ `reference' to a type TYPE. TYPEPTR, if nonzero,
386 points to a pointer to memory where the reference type should be
387 stored. If *TYPEPTR is zero, update it to point to the reference
388 type we return. We allocate new memory if needed. REFCODE denotes
389 the kind of reference type to lookup (lvalue or rvalue reference). */
392 make_reference_type (struct type
*type
, struct type
**typeptr
,
393 enum type_code refcode
)
395 struct type
*ntype
; /* New type */
396 struct type
**reftype
;
399 gdb_assert (refcode
== TYPE_CODE_REF
|| refcode
== TYPE_CODE_RVALUE_REF
);
401 ntype
= (refcode
== TYPE_CODE_REF
? TYPE_REFERENCE_TYPE (type
)
402 : TYPE_RVALUE_REFERENCE_TYPE (type
));
407 return ntype
; /* Don't care about alloc,
408 and have new type. */
409 else if (*typeptr
== 0)
411 *typeptr
= ntype
; /* Tracking alloc, and have new type. */
416 if (typeptr
== 0 || *typeptr
== 0) /* We'll need to allocate one. */
418 ntype
= alloc_type_copy (type
);
422 else /* We have storage, but need to reset it. */
425 chain
= TYPE_CHAIN (ntype
);
427 TYPE_CHAIN (ntype
) = chain
;
430 TYPE_TARGET_TYPE (ntype
) = type
;
431 reftype
= (refcode
== TYPE_CODE_REF
? &TYPE_REFERENCE_TYPE (type
)
432 : &TYPE_RVALUE_REFERENCE_TYPE (type
));
436 /* FIXME! Assume the machine has only one representation for
437 references, and that it matches the (only) representation for
440 TYPE_LENGTH (ntype
) =
441 gdbarch_ptr_bit (get_type_arch (type
)) / TARGET_CHAR_BIT
;
442 TYPE_CODE (ntype
) = refcode
;
446 /* Update the length of all the other variants of this type. */
447 chain
= TYPE_CHAIN (ntype
);
448 while (chain
!= ntype
)
450 TYPE_LENGTH (chain
) = TYPE_LENGTH (ntype
);
451 chain
= TYPE_CHAIN (chain
);
457 /* Same as above, but caller doesn't care about memory allocation
461 lookup_reference_type (struct type
*type
, enum type_code refcode
)
463 return make_reference_type (type
, (struct type
**) 0, refcode
);
466 /* Lookup the lvalue reference type for the type TYPE. */
469 lookup_lvalue_reference_type (struct type
*type
)
471 return lookup_reference_type (type
, TYPE_CODE_REF
);
474 /* Lookup the rvalue reference type for the type TYPE. */
477 lookup_rvalue_reference_type (struct type
*type
)
479 return lookup_reference_type (type
, TYPE_CODE_RVALUE_REF
);
482 /* Lookup a function type that returns type TYPE. TYPEPTR, if
483 nonzero, points to a pointer to memory where the function type
484 should be stored. If *TYPEPTR is zero, update it to point to the
485 function type we return. We allocate new memory if needed. */
488 make_function_type (struct type
*type
, struct type
**typeptr
)
490 struct type
*ntype
; /* New type */
492 if (typeptr
== 0 || *typeptr
== 0) /* We'll need to allocate one. */
494 ntype
= alloc_type_copy (type
);
498 else /* We have storage, but need to reset it. */
504 TYPE_TARGET_TYPE (ntype
) = type
;
506 TYPE_LENGTH (ntype
) = 1;
507 TYPE_CODE (ntype
) = TYPE_CODE_FUNC
;
509 INIT_FUNC_SPECIFIC (ntype
);
514 /* Given a type TYPE, return a type of functions that return that type.
515 May need to construct such a type if this is the first use. */
518 lookup_function_type (struct type
*type
)
520 return make_function_type (type
, (struct type
**) 0);
523 /* Given a type TYPE and argument types, return the appropriate
524 function type. If the final type in PARAM_TYPES is NULL, make a
528 lookup_function_type_with_arguments (struct type
*type
,
530 struct type
**param_types
)
532 struct type
*fn
= make_function_type (type
, (struct type
**) 0);
537 if (param_types
[nparams
- 1] == NULL
)
540 TYPE_VARARGS (fn
) = 1;
542 else if (TYPE_CODE (check_typedef (param_types
[nparams
- 1]))
546 /* Caller should have ensured this. */
547 gdb_assert (nparams
== 0);
548 TYPE_PROTOTYPED (fn
) = 1;
552 TYPE_NFIELDS (fn
) = nparams
;
554 = (struct field
*) TYPE_ZALLOC (fn
, nparams
* sizeof (struct field
));
555 for (i
= 0; i
< nparams
; ++i
)
556 TYPE_FIELD_TYPE (fn
, i
) = param_types
[i
];
561 /* Identify address space identifier by name --
562 return the integer flag defined in gdbtypes.h. */
565 address_space_name_to_int (struct gdbarch
*gdbarch
, char *space_identifier
)
569 /* Check for known address space delimiters. */
570 if (!strcmp (space_identifier
, "code"))
571 return TYPE_INSTANCE_FLAG_CODE_SPACE
;
572 else if (!strcmp (space_identifier
, "data"))
573 return TYPE_INSTANCE_FLAG_DATA_SPACE
;
574 else if (gdbarch_address_class_name_to_type_flags_p (gdbarch
)
575 && gdbarch_address_class_name_to_type_flags (gdbarch
,
580 error (_("Unknown address space specifier: \"%s\""), space_identifier
);
583 /* Identify address space identifier by integer flag as defined in
584 gdbtypes.h -- return the string version of the adress space name. */
587 address_space_int_to_name (struct gdbarch
*gdbarch
, int space_flag
)
589 if (space_flag
& TYPE_INSTANCE_FLAG_CODE_SPACE
)
591 else if (space_flag
& TYPE_INSTANCE_FLAG_DATA_SPACE
)
593 else if ((space_flag
& TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL
)
594 && gdbarch_address_class_type_flags_to_name_p (gdbarch
))
595 return gdbarch_address_class_type_flags_to_name (gdbarch
, space_flag
);
600 /* Create a new type with instance flags NEW_FLAGS, based on TYPE.
602 If STORAGE is non-NULL, create the new type instance there.
603 STORAGE must be in the same obstack as TYPE. */
606 make_qualified_type (struct type
*type
, int new_flags
,
607 struct type
*storage
)
614 if (TYPE_INSTANCE_FLAGS (ntype
) == new_flags
)
616 ntype
= TYPE_CHAIN (ntype
);
618 while (ntype
!= type
);
620 /* Create a new type instance. */
622 ntype
= alloc_type_instance (type
);
625 /* If STORAGE was provided, it had better be in the same objfile
626 as TYPE. Otherwise, we can't link it into TYPE's cv chain:
627 if one objfile is freed and the other kept, we'd have
628 dangling pointers. */
629 gdb_assert (TYPE_OBJFILE (type
) == TYPE_OBJFILE (storage
));
632 TYPE_MAIN_TYPE (ntype
) = TYPE_MAIN_TYPE (type
);
633 TYPE_CHAIN (ntype
) = ntype
;
636 /* Pointers or references to the original type are not relevant to
638 TYPE_POINTER_TYPE (ntype
) = (struct type
*) 0;
639 TYPE_REFERENCE_TYPE (ntype
) = (struct type
*) 0;
641 /* Chain the new qualified type to the old type. */
642 TYPE_CHAIN (ntype
) = TYPE_CHAIN (type
);
643 TYPE_CHAIN (type
) = ntype
;
645 /* Now set the instance flags and return the new type. */
646 TYPE_INSTANCE_FLAGS (ntype
) = new_flags
;
648 /* Set length of new type to that of the original type. */
649 TYPE_LENGTH (ntype
) = TYPE_LENGTH (type
);
654 /* Make an address-space-delimited variant of a type -- a type that
655 is identical to the one supplied except that it has an address
656 space attribute attached to it (such as "code" or "data").
658 The space attributes "code" and "data" are for Harvard
659 architectures. The address space attributes are for architectures
660 which have alternately sized pointers or pointers with alternate
664 make_type_with_address_space (struct type
*type
, int space_flag
)
666 int new_flags
= ((TYPE_INSTANCE_FLAGS (type
)
667 & ~(TYPE_INSTANCE_FLAG_CODE_SPACE
668 | TYPE_INSTANCE_FLAG_DATA_SPACE
669 | TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL
))
672 return make_qualified_type (type
, new_flags
, NULL
);
675 /* Make a "c-v" variant of a type -- a type that is identical to the
676 one supplied except that it may have const or volatile attributes
677 CNST is a flag for setting the const attribute
678 VOLTL is a flag for setting the volatile attribute
679 TYPE is the base type whose variant we are creating.
681 If TYPEPTR and *TYPEPTR are non-zero, then *TYPEPTR points to
682 storage to hold the new qualified type; *TYPEPTR and TYPE must be
683 in the same objfile. Otherwise, allocate fresh memory for the new
684 type whereever TYPE lives. If TYPEPTR is non-zero, set it to the
685 new type we construct. */
688 make_cv_type (int cnst
, int voltl
,
690 struct type
**typeptr
)
692 struct type
*ntype
; /* New type */
694 int new_flags
= (TYPE_INSTANCE_FLAGS (type
)
695 & ~(TYPE_INSTANCE_FLAG_CONST
696 | TYPE_INSTANCE_FLAG_VOLATILE
));
699 new_flags
|= TYPE_INSTANCE_FLAG_CONST
;
702 new_flags
|= TYPE_INSTANCE_FLAG_VOLATILE
;
704 if (typeptr
&& *typeptr
!= NULL
)
706 /* TYPE and *TYPEPTR must be in the same objfile. We can't have
707 a C-V variant chain that threads across objfiles: if one
708 objfile gets freed, then the other has a broken C-V chain.
710 This code used to try to copy over the main type from TYPE to
711 *TYPEPTR if they were in different objfiles, but that's
712 wrong, too: TYPE may have a field list or member function
713 lists, which refer to types of their own, etc. etc. The
714 whole shebang would need to be copied over recursively; you
715 can't have inter-objfile pointers. The only thing to do is
716 to leave stub types as stub types, and look them up afresh by
717 name each time you encounter them. */
718 gdb_assert (TYPE_OBJFILE (*typeptr
) == TYPE_OBJFILE (type
));
721 ntype
= make_qualified_type (type
, new_flags
,
722 typeptr
? *typeptr
: NULL
);
730 /* Make a 'restrict'-qualified version of TYPE. */
733 make_restrict_type (struct type
*type
)
735 return make_qualified_type (type
,
736 (TYPE_INSTANCE_FLAGS (type
)
737 | TYPE_INSTANCE_FLAG_RESTRICT
),
741 /* Make a type without const, volatile, or restrict. */
744 make_unqualified_type (struct type
*type
)
746 return make_qualified_type (type
,
747 (TYPE_INSTANCE_FLAGS (type
)
748 & ~(TYPE_INSTANCE_FLAG_CONST
749 | TYPE_INSTANCE_FLAG_VOLATILE
750 | TYPE_INSTANCE_FLAG_RESTRICT
)),
754 /* Make a '_Atomic'-qualified version of TYPE. */
757 make_atomic_type (struct type
*type
)
759 return make_qualified_type (type
,
760 (TYPE_INSTANCE_FLAGS (type
)
761 | TYPE_INSTANCE_FLAG_ATOMIC
),
765 /* Replace the contents of ntype with the type *type. This changes the
766 contents, rather than the pointer for TYPE_MAIN_TYPE (ntype); thus
767 the changes are propogated to all types in the TYPE_CHAIN.
769 In order to build recursive types, it's inevitable that we'll need
770 to update types in place --- but this sort of indiscriminate
771 smashing is ugly, and needs to be replaced with something more
772 controlled. TYPE_MAIN_TYPE is a step in this direction; it's not
773 clear if more steps are needed. */
776 replace_type (struct type
*ntype
, struct type
*type
)
780 /* These two types had better be in the same objfile. Otherwise,
781 the assignment of one type's main type structure to the other
782 will produce a type with references to objects (names; field
783 lists; etc.) allocated on an objfile other than its own. */
784 gdb_assert (TYPE_OBJFILE (ntype
) == TYPE_OBJFILE (type
));
786 *TYPE_MAIN_TYPE (ntype
) = *TYPE_MAIN_TYPE (type
);
788 /* The type length is not a part of the main type. Update it for
789 each type on the variant chain. */
793 /* Assert that this element of the chain has no address-class bits
794 set in its flags. Such type variants might have type lengths
795 which are supposed to be different from the non-address-class
796 variants. This assertion shouldn't ever be triggered because
797 symbol readers which do construct address-class variants don't
798 call replace_type(). */
799 gdb_assert (TYPE_ADDRESS_CLASS_ALL (chain
) == 0);
801 TYPE_LENGTH (chain
) = TYPE_LENGTH (type
);
802 chain
= TYPE_CHAIN (chain
);
804 while (ntype
!= chain
);
806 /* Assert that the two types have equivalent instance qualifiers.
807 This should be true for at least all of our debug readers. */
808 gdb_assert (TYPE_INSTANCE_FLAGS (ntype
) == TYPE_INSTANCE_FLAGS (type
));
811 /* Implement direct support for MEMBER_TYPE in GNU C++.
812 May need to construct such a type if this is the first use.
813 The TYPE is the type of the member. The DOMAIN is the type
814 of the aggregate that the member belongs to. */
817 lookup_memberptr_type (struct type
*type
, struct type
*domain
)
821 mtype
= alloc_type_copy (type
);
822 smash_to_memberptr_type (mtype
, domain
, type
);
826 /* Return a pointer-to-method type, for a method of type TO_TYPE. */
829 lookup_methodptr_type (struct type
*to_type
)
833 mtype
= alloc_type_copy (to_type
);
834 smash_to_methodptr_type (mtype
, to_type
);
838 /* Allocate a stub method whose return type is TYPE. This apparently
839 happens for speed of symbol reading, since parsing out the
840 arguments to the method is cpu-intensive, the way we are doing it.
841 So, we will fill in arguments later. This always returns a fresh
845 allocate_stub_method (struct type
*type
)
849 mtype
= alloc_type_copy (type
);
850 TYPE_CODE (mtype
) = TYPE_CODE_METHOD
;
851 TYPE_LENGTH (mtype
) = 1;
852 TYPE_STUB (mtype
) = 1;
853 TYPE_TARGET_TYPE (mtype
) = type
;
854 /* TYPE_SELF_TYPE (mtype) = unknown yet */
858 /* Create a range type with a dynamic range from LOW_BOUND to
859 HIGH_BOUND, inclusive. See create_range_type for further details. */
862 create_range_type (struct type
*result_type
, struct type
*index_type
,
863 const struct dynamic_prop
*low_bound
,
864 const struct dynamic_prop
*high_bound
)
866 if (result_type
== NULL
)
867 result_type
= alloc_type_copy (index_type
);
868 TYPE_CODE (result_type
) = TYPE_CODE_RANGE
;
869 TYPE_TARGET_TYPE (result_type
) = index_type
;
870 if (TYPE_STUB (index_type
))
871 TYPE_TARGET_STUB (result_type
) = 1;
873 TYPE_LENGTH (result_type
) = TYPE_LENGTH (check_typedef (index_type
));
875 TYPE_RANGE_DATA (result_type
) = (struct range_bounds
*)
876 TYPE_ZALLOC (result_type
, sizeof (struct range_bounds
));
877 TYPE_RANGE_DATA (result_type
)->low
= *low_bound
;
878 TYPE_RANGE_DATA (result_type
)->high
= *high_bound
;
880 if (low_bound
->kind
== PROP_CONST
&& low_bound
->data
.const_val
>= 0)
881 TYPE_UNSIGNED (result_type
) = 1;
883 /* Ada allows the declaration of range types whose upper bound is
884 less than the lower bound, so checking the lower bound is not
885 enough. Make sure we do not mark a range type whose upper bound
886 is negative as unsigned. */
887 if (high_bound
->kind
== PROP_CONST
&& high_bound
->data
.const_val
< 0)
888 TYPE_UNSIGNED (result_type
) = 0;
893 /* Create a range type using either a blank type supplied in
894 RESULT_TYPE, or creating a new type, inheriting the objfile from
897 Indices will be of type INDEX_TYPE, and will range from LOW_BOUND
898 to HIGH_BOUND, inclusive.
900 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
901 sure it is TYPE_CODE_UNDEF before we bash it into a range type? */
904 create_static_range_type (struct type
*result_type
, struct type
*index_type
,
905 LONGEST low_bound
, LONGEST high_bound
)
907 struct dynamic_prop low
, high
;
909 low
.kind
= PROP_CONST
;
910 low
.data
.const_val
= low_bound
;
912 high
.kind
= PROP_CONST
;
913 high
.data
.const_val
= high_bound
;
915 result_type
= create_range_type (result_type
, index_type
, &low
, &high
);
920 /* Predicate tests whether BOUNDS are static. Returns 1 if all bounds values
921 are static, otherwise returns 0. */
924 has_static_range (const struct range_bounds
*bounds
)
926 return (bounds
->low
.kind
== PROP_CONST
927 && bounds
->high
.kind
== PROP_CONST
);
931 /* Set *LOWP and *HIGHP to the lower and upper bounds of discrete type
932 TYPE. Return 1 if type is a range type, 0 if it is discrete (and
933 bounds will fit in LONGEST), or -1 otherwise. */
936 get_discrete_bounds (struct type
*type
, LONGEST
*lowp
, LONGEST
*highp
)
938 type
= check_typedef (type
);
939 switch (TYPE_CODE (type
))
941 case TYPE_CODE_RANGE
:
942 *lowp
= TYPE_LOW_BOUND (type
);
943 *highp
= TYPE_HIGH_BOUND (type
);
946 if (TYPE_NFIELDS (type
) > 0)
948 /* The enums may not be sorted by value, so search all
952 *lowp
= *highp
= TYPE_FIELD_ENUMVAL (type
, 0);
953 for (i
= 0; i
< TYPE_NFIELDS (type
); i
++)
955 if (TYPE_FIELD_ENUMVAL (type
, i
) < *lowp
)
956 *lowp
= TYPE_FIELD_ENUMVAL (type
, i
);
957 if (TYPE_FIELD_ENUMVAL (type
, i
) > *highp
)
958 *highp
= TYPE_FIELD_ENUMVAL (type
, i
);
961 /* Set unsigned indicator if warranted. */
964 TYPE_UNSIGNED (type
) = 1;
978 if (TYPE_LENGTH (type
) > sizeof (LONGEST
)) /* Too big */
980 if (!TYPE_UNSIGNED (type
))
982 *lowp
= -(1 << (TYPE_LENGTH (type
) * TARGET_CHAR_BIT
- 1));
986 /* ... fall through for unsigned ints ... */
989 /* This round-about calculation is to avoid shifting by
990 TYPE_LENGTH (type) * TARGET_CHAR_BIT, which will not work
991 if TYPE_LENGTH (type) == sizeof (LONGEST). */
992 *highp
= 1 << (TYPE_LENGTH (type
) * TARGET_CHAR_BIT
- 1);
993 *highp
= (*highp
- 1) | *highp
;
1000 /* Assuming TYPE is a simple, non-empty array type, compute its upper
1001 and lower bound. Save the low bound into LOW_BOUND if not NULL.
1002 Save the high bound into HIGH_BOUND if not NULL.
1004 Return 1 if the operation was successful. Return zero otherwise,
1005 in which case the values of LOW_BOUND and HIGH_BOUNDS are unmodified.
1007 We now simply use get_discrete_bounds call to get the values
1008 of the low and high bounds.
1009 get_discrete_bounds can return three values:
1010 1, meaning that index is a range,
1011 0, meaning that index is a discrete type,
1012 or -1 for failure. */
1015 get_array_bounds (struct type
*type
, LONGEST
*low_bound
, LONGEST
*high_bound
)
1017 struct type
*index
= TYPE_INDEX_TYPE (type
);
1025 res
= get_discrete_bounds (index
, &low
, &high
);
1029 /* Check if the array bounds are undefined. */
1031 && ((low_bound
&& TYPE_ARRAY_LOWER_BOUND_IS_UNDEFINED (type
))
1032 || (high_bound
&& TYPE_ARRAY_UPPER_BOUND_IS_UNDEFINED (type
))))
1044 /* Assuming that TYPE is a discrete type and VAL is a valid integer
1045 representation of a value of this type, save the corresponding
1046 position number in POS.
1048 Its differs from VAL only in the case of enumeration types. In
1049 this case, the position number of the value of the first listed
1050 enumeration literal is zero; the position number of the value of
1051 each subsequent enumeration literal is one more than that of its
1052 predecessor in the list.
1054 Return 1 if the operation was successful. Return zero otherwise,
1055 in which case the value of POS is unmodified.
1059 discrete_position (struct type
*type
, LONGEST val
, LONGEST
*pos
)
1061 if (TYPE_CODE (type
) == TYPE_CODE_ENUM
)
1065 for (i
= 0; i
< TYPE_NFIELDS (type
); i
+= 1)
1067 if (val
== TYPE_FIELD_ENUMVAL (type
, i
))
1073 /* Invalid enumeration value. */
1083 /* Create an array type using either a blank type supplied in
1084 RESULT_TYPE, or creating a new type, inheriting the objfile from
1087 Elements will be of type ELEMENT_TYPE, the indices will be of type
1090 If BIT_STRIDE is not zero, build a packed array type whose element
1091 size is BIT_STRIDE. Otherwise, ignore this parameter.
1093 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
1094 sure it is TYPE_CODE_UNDEF before we bash it into an array
1098 create_array_type_with_stride (struct type
*result_type
,
1099 struct type
*element_type
,
1100 struct type
*range_type
,
1101 unsigned int bit_stride
)
1103 if (result_type
== NULL
)
1104 result_type
= alloc_type_copy (range_type
);
1106 TYPE_CODE (result_type
) = TYPE_CODE_ARRAY
;
1107 TYPE_TARGET_TYPE (result_type
) = element_type
;
1108 if (has_static_range (TYPE_RANGE_DATA (range_type
))
1109 && (!type_not_associated (result_type
)
1110 && !type_not_allocated (result_type
)))
1112 LONGEST low_bound
, high_bound
;
1114 if (get_discrete_bounds (range_type
, &low_bound
, &high_bound
) < 0)
1115 low_bound
= high_bound
= 0;
1116 element_type
= check_typedef (element_type
);
1117 /* Be careful when setting the array length. Ada arrays can be
1118 empty arrays with the high_bound being smaller than the low_bound.
1119 In such cases, the array length should be zero. */
1120 if (high_bound
< low_bound
)
1121 TYPE_LENGTH (result_type
) = 0;
1122 else if (bit_stride
> 0)
1123 TYPE_LENGTH (result_type
) =
1124 (bit_stride
* (high_bound
- low_bound
+ 1) + 7) / 8;
1126 TYPE_LENGTH (result_type
) =
1127 TYPE_LENGTH (element_type
) * (high_bound
- low_bound
+ 1);
1131 /* This type is dynamic and its length needs to be computed
1132 on demand. In the meantime, avoid leaving the TYPE_LENGTH
1133 undefined by setting it to zero. Although we are not expected
1134 to trust TYPE_LENGTH in this case, setting the size to zero
1135 allows us to avoid allocating objects of random sizes in case
1136 we accidently do. */
1137 TYPE_LENGTH (result_type
) = 0;
1140 TYPE_NFIELDS (result_type
) = 1;
1141 TYPE_FIELDS (result_type
) =
1142 (struct field
*) TYPE_ZALLOC (result_type
, sizeof (struct field
));
1143 TYPE_INDEX_TYPE (result_type
) = range_type
;
1145 TYPE_FIELD_BITSIZE (result_type
, 0) = bit_stride
;
1147 /* TYPE_TARGET_STUB will take care of zero length arrays. */
1148 if (TYPE_LENGTH (result_type
) == 0)
1149 TYPE_TARGET_STUB (result_type
) = 1;
1154 /* Same as create_array_type_with_stride but with no bit_stride
1155 (BIT_STRIDE = 0), thus building an unpacked array. */
1158 create_array_type (struct type
*result_type
,
1159 struct type
*element_type
,
1160 struct type
*range_type
)
1162 return create_array_type_with_stride (result_type
, element_type
,
1167 lookup_array_range_type (struct type
*element_type
,
1168 LONGEST low_bound
, LONGEST high_bound
)
1170 struct gdbarch
*gdbarch
= get_type_arch (element_type
);
1171 struct type
*index_type
= builtin_type (gdbarch
)->builtin_int
;
1172 struct type
*range_type
1173 = create_static_range_type (NULL
, index_type
, low_bound
, high_bound
);
1175 return create_array_type (NULL
, element_type
, range_type
);
1178 /* Create a string type using either a blank type supplied in
1179 RESULT_TYPE, or creating a new type. String types are similar
1180 enough to array of char types that we can use create_array_type to
1181 build the basic type and then bash it into a string type.
1183 For fixed length strings, the range type contains 0 as the lower
1184 bound and the length of the string minus one as the upper bound.
1186 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
1187 sure it is TYPE_CODE_UNDEF before we bash it into a string
1191 create_string_type (struct type
*result_type
,
1192 struct type
*string_char_type
,
1193 struct type
*range_type
)
1195 result_type
= create_array_type (result_type
,
1198 TYPE_CODE (result_type
) = TYPE_CODE_STRING
;
1203 lookup_string_range_type (struct type
*string_char_type
,
1204 LONGEST low_bound
, LONGEST high_bound
)
1206 struct type
*result_type
;
1208 result_type
= lookup_array_range_type (string_char_type
,
1209 low_bound
, high_bound
);
1210 TYPE_CODE (result_type
) = TYPE_CODE_STRING
;
1215 create_set_type (struct type
*result_type
, struct type
*domain_type
)
1217 if (result_type
== NULL
)
1218 result_type
= alloc_type_copy (domain_type
);
1220 TYPE_CODE (result_type
) = TYPE_CODE_SET
;
1221 TYPE_NFIELDS (result_type
) = 1;
1222 TYPE_FIELDS (result_type
)
1223 = (struct field
*) TYPE_ZALLOC (result_type
, sizeof (struct field
));
1225 if (!TYPE_STUB (domain_type
))
1227 LONGEST low_bound
, high_bound
, bit_length
;
1229 if (get_discrete_bounds (domain_type
, &low_bound
, &high_bound
) < 0)
1230 low_bound
= high_bound
= 0;
1231 bit_length
= high_bound
- low_bound
+ 1;
1232 TYPE_LENGTH (result_type
)
1233 = (bit_length
+ TARGET_CHAR_BIT
- 1) / TARGET_CHAR_BIT
;
1235 TYPE_UNSIGNED (result_type
) = 1;
1237 TYPE_FIELD_TYPE (result_type
, 0) = domain_type
;
1242 /* Convert ARRAY_TYPE to a vector type. This may modify ARRAY_TYPE
1243 and any array types nested inside it. */
1246 make_vector_type (struct type
*array_type
)
1248 struct type
*inner_array
, *elt_type
;
1251 /* Find the innermost array type, in case the array is
1252 multi-dimensional. */
1253 inner_array
= array_type
;
1254 while (TYPE_CODE (TYPE_TARGET_TYPE (inner_array
)) == TYPE_CODE_ARRAY
)
1255 inner_array
= TYPE_TARGET_TYPE (inner_array
);
1257 elt_type
= TYPE_TARGET_TYPE (inner_array
);
1258 if (TYPE_CODE (elt_type
) == TYPE_CODE_INT
)
1260 flags
= TYPE_INSTANCE_FLAGS (elt_type
) | TYPE_INSTANCE_FLAG_NOTTEXT
;
1261 elt_type
= make_qualified_type (elt_type
, flags
, NULL
);
1262 TYPE_TARGET_TYPE (inner_array
) = elt_type
;
1265 TYPE_VECTOR (array_type
) = 1;
1269 init_vector_type (struct type
*elt_type
, int n
)
1271 struct type
*array_type
;
1273 array_type
= lookup_array_range_type (elt_type
, 0, n
- 1);
1274 make_vector_type (array_type
);
1278 /* Internal routine called by TYPE_SELF_TYPE to return the type that TYPE
1279 belongs to. In c++ this is the class of "this", but TYPE_THIS_TYPE is too
1280 confusing. "self" is a common enough replacement for "this".
1281 TYPE must be one of TYPE_CODE_METHODPTR, TYPE_CODE_MEMBERPTR, or
1282 TYPE_CODE_METHOD. */
1285 internal_type_self_type (struct type
*type
)
1287 switch (TYPE_CODE (type
))
1289 case TYPE_CODE_METHODPTR
:
1290 case TYPE_CODE_MEMBERPTR
:
1291 if (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_NONE
)
1293 gdb_assert (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_SELF_TYPE
);
1294 return TYPE_MAIN_TYPE (type
)->type_specific
.self_type
;
1295 case TYPE_CODE_METHOD
:
1296 if (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_NONE
)
1298 gdb_assert (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_FUNC
);
1299 return TYPE_MAIN_TYPE (type
)->type_specific
.func_stuff
->self_type
;
1301 gdb_assert_not_reached ("bad type");
1305 /* Set the type of the class that TYPE belongs to.
1306 In c++ this is the class of "this".
1307 TYPE must be one of TYPE_CODE_METHODPTR, TYPE_CODE_MEMBERPTR, or
1308 TYPE_CODE_METHOD. */
1311 set_type_self_type (struct type
*type
, struct type
*self_type
)
1313 switch (TYPE_CODE (type
))
1315 case TYPE_CODE_METHODPTR
:
1316 case TYPE_CODE_MEMBERPTR
:
1317 if (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_NONE
)
1318 TYPE_SPECIFIC_FIELD (type
) = TYPE_SPECIFIC_SELF_TYPE
;
1319 gdb_assert (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_SELF_TYPE
);
1320 TYPE_MAIN_TYPE (type
)->type_specific
.self_type
= self_type
;
1322 case TYPE_CODE_METHOD
:
1323 if (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_NONE
)
1324 INIT_FUNC_SPECIFIC (type
);
1325 gdb_assert (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_FUNC
);
1326 TYPE_MAIN_TYPE (type
)->type_specific
.func_stuff
->self_type
= self_type
;
1329 gdb_assert_not_reached ("bad type");
1333 /* Smash TYPE to be a type of pointers to members of SELF_TYPE with type
1334 TO_TYPE. A member pointer is a wierd thing -- it amounts to a
1335 typed offset into a struct, e.g. "an int at offset 8". A MEMBER
1336 TYPE doesn't include the offset (that's the value of the MEMBER
1337 itself), but does include the structure type into which it points
1340 When "smashing" the type, we preserve the objfile that the old type
1341 pointed to, since we aren't changing where the type is actually
1345 smash_to_memberptr_type (struct type
*type
, struct type
*self_type
,
1346 struct type
*to_type
)
1349 TYPE_CODE (type
) = TYPE_CODE_MEMBERPTR
;
1350 TYPE_TARGET_TYPE (type
) = to_type
;
1351 set_type_self_type (type
, self_type
);
1352 /* Assume that a data member pointer is the same size as a normal
1355 = gdbarch_ptr_bit (get_type_arch (to_type
)) / TARGET_CHAR_BIT
;
1358 /* Smash TYPE to be a type of pointer to methods type TO_TYPE.
1360 When "smashing" the type, we preserve the objfile that the old type
1361 pointed to, since we aren't changing where the type is actually
1365 smash_to_methodptr_type (struct type
*type
, struct type
*to_type
)
1368 TYPE_CODE (type
) = TYPE_CODE_METHODPTR
;
1369 TYPE_TARGET_TYPE (type
) = to_type
;
1370 set_type_self_type (type
, TYPE_SELF_TYPE (to_type
));
1371 TYPE_LENGTH (type
) = cplus_method_ptr_size (to_type
);
1374 /* Smash TYPE to be a type of method of SELF_TYPE with type TO_TYPE.
1375 METHOD just means `function that gets an extra "this" argument'.
1377 When "smashing" the type, we preserve the objfile that the old type
1378 pointed to, since we aren't changing where the type is actually
1382 smash_to_method_type (struct type
*type
, struct type
*self_type
,
1383 struct type
*to_type
, struct field
*args
,
1384 int nargs
, int varargs
)
1387 TYPE_CODE (type
) = TYPE_CODE_METHOD
;
1388 TYPE_TARGET_TYPE (type
) = to_type
;
1389 set_type_self_type (type
, self_type
);
1390 TYPE_FIELDS (type
) = args
;
1391 TYPE_NFIELDS (type
) = nargs
;
1393 TYPE_VARARGS (type
) = 1;
1394 TYPE_LENGTH (type
) = 1; /* In practice, this is never needed. */
1397 /* Return a typename for a struct/union/enum type without "struct ",
1398 "union ", or "enum ". If the type has a NULL name, return NULL. */
1401 type_name_no_tag (const struct type
*type
)
1403 if (TYPE_TAG_NAME (type
) != NULL
)
1404 return TYPE_TAG_NAME (type
);
1406 /* Is there code which expects this to return the name if there is
1407 no tag name? My guess is that this is mainly used for C++ in
1408 cases where the two will always be the same. */
1409 return TYPE_NAME (type
);
1412 /* A wrapper of type_name_no_tag which calls error if the type is anonymous.
1413 Since GCC PR debug/47510 DWARF provides associated information to detect the
1414 anonymous class linkage name from its typedef.
1416 Parameter TYPE should not yet have CHECK_TYPEDEF applied, this function will
1420 type_name_no_tag_or_error (struct type
*type
)
1422 struct type
*saved_type
= type
;
1424 struct objfile
*objfile
;
1426 type
= check_typedef (type
);
1428 name
= type_name_no_tag (type
);
1432 name
= type_name_no_tag (saved_type
);
1433 objfile
= TYPE_OBJFILE (saved_type
);
1434 error (_("Invalid anonymous type %s [in module %s], GCC PR debug/47510 bug?"),
1435 name
? name
: "<anonymous>",
1436 objfile
? objfile_name (objfile
) : "<arch>");
1439 /* Lookup a typedef or primitive type named NAME, visible in lexical
1440 block BLOCK. If NOERR is nonzero, return zero if NAME is not
1441 suitably defined. */
1444 lookup_typename (const struct language_defn
*language
,
1445 struct gdbarch
*gdbarch
, const char *name
,
1446 const struct block
*block
, int noerr
)
1450 sym
= lookup_symbol_in_language (name
, block
, VAR_DOMAIN
,
1451 language
->la_language
, NULL
).symbol
;
1452 if (sym
!= NULL
&& SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
1453 return SYMBOL_TYPE (sym
);
1457 error (_("No type named %s."), name
);
1461 lookup_unsigned_typename (const struct language_defn
*language
,
1462 struct gdbarch
*gdbarch
, const char *name
)
1464 char *uns
= (char *) alloca (strlen (name
) + 10);
1466 strcpy (uns
, "unsigned ");
1467 strcpy (uns
+ 9, name
);
1468 return lookup_typename (language
, gdbarch
, uns
, (struct block
*) NULL
, 0);
1472 lookup_signed_typename (const struct language_defn
*language
,
1473 struct gdbarch
*gdbarch
, const char *name
)
1476 char *uns
= (char *) alloca (strlen (name
) + 8);
1478 strcpy (uns
, "signed ");
1479 strcpy (uns
+ 7, name
);
1480 t
= lookup_typename (language
, gdbarch
, uns
, (struct block
*) NULL
, 1);
1481 /* If we don't find "signed FOO" just try again with plain "FOO". */
1484 return lookup_typename (language
, gdbarch
, name
, (struct block
*) NULL
, 0);
1487 /* Lookup a structure type named "struct NAME",
1488 visible in lexical block BLOCK. */
1491 lookup_struct (const char *name
, const struct block
*block
)
1495 sym
= lookup_symbol (name
, block
, STRUCT_DOMAIN
, 0).symbol
;
1499 error (_("No struct type named %s."), name
);
1501 if (TYPE_CODE (SYMBOL_TYPE (sym
)) != TYPE_CODE_STRUCT
)
1503 error (_("This context has class, union or enum %s, not a struct."),
1506 return (SYMBOL_TYPE (sym
));
1509 /* Lookup a union type named "union NAME",
1510 visible in lexical block BLOCK. */
1513 lookup_union (const char *name
, const struct block
*block
)
1518 sym
= lookup_symbol (name
, block
, STRUCT_DOMAIN
, 0).symbol
;
1521 error (_("No union type named %s."), name
);
1523 t
= SYMBOL_TYPE (sym
);
1525 if (TYPE_CODE (t
) == TYPE_CODE_UNION
)
1528 /* If we get here, it's not a union. */
1529 error (_("This context has class, struct or enum %s, not a union."),
1533 /* Lookup an enum type named "enum NAME",
1534 visible in lexical block BLOCK. */
1537 lookup_enum (const char *name
, const struct block
*block
)
1541 sym
= lookup_symbol (name
, block
, STRUCT_DOMAIN
, 0).symbol
;
1544 error (_("No enum type named %s."), name
);
1546 if (TYPE_CODE (SYMBOL_TYPE (sym
)) != TYPE_CODE_ENUM
)
1548 error (_("This context has class, struct or union %s, not an enum."),
1551 return (SYMBOL_TYPE (sym
));
1554 /* Lookup a template type named "template NAME<TYPE>",
1555 visible in lexical block BLOCK. */
1558 lookup_template_type (char *name
, struct type
*type
,
1559 const struct block
*block
)
1562 char *nam
= (char *)
1563 alloca (strlen (name
) + strlen (TYPE_NAME (type
)) + 4);
1567 strcat (nam
, TYPE_NAME (type
));
1568 strcat (nam
, " >"); /* FIXME, extra space still introduced in gcc? */
1570 sym
= lookup_symbol (nam
, block
, VAR_DOMAIN
, 0).symbol
;
1574 error (_("No template type named %s."), name
);
1576 if (TYPE_CODE (SYMBOL_TYPE (sym
)) != TYPE_CODE_STRUCT
)
1578 error (_("This context has class, union or enum %s, not a struct."),
1581 return (SYMBOL_TYPE (sym
));
1584 /* Given a type TYPE, lookup the type of the component of type named
1587 TYPE can be either a struct or union, or a pointer or reference to
1588 a struct or union. If it is a pointer or reference, its target
1589 type is automatically used. Thus '.' and '->' are interchangable,
1590 as specified for the definitions of the expression element types
1591 STRUCTOP_STRUCT and STRUCTOP_PTR.
1593 If NOERR is nonzero, return zero if NAME is not suitably defined.
1594 If NAME is the name of a baseclass type, return that type. */
1597 lookup_struct_elt_type (struct type
*type
, const char *name
, int noerr
)
1603 type
= check_typedef (type
);
1604 if (TYPE_CODE (type
) != TYPE_CODE_PTR
1605 && TYPE_CODE (type
) != TYPE_CODE_REF
)
1607 type
= TYPE_TARGET_TYPE (type
);
1610 if (TYPE_CODE (type
) != TYPE_CODE_STRUCT
1611 && TYPE_CODE (type
) != TYPE_CODE_UNION
)
1613 std::string type_name
= type_to_string (type
);
1614 error (_("Type %s is not a structure or union type."),
1615 type_name
.c_str ());
1619 /* FIXME: This change put in by Michael seems incorrect for the case
1620 where the structure tag name is the same as the member name.
1621 I.e. when doing "ptype bell->bar" for "struct foo { int bar; int
1622 foo; } bell;" Disabled by fnf. */
1626 type_name
= type_name_no_tag (type
);
1627 if (type_name
!= NULL
&& strcmp (type_name
, name
) == 0)
1632 for (i
= TYPE_NFIELDS (type
) - 1; i
>= TYPE_N_BASECLASSES (type
); i
--)
1634 const char *t_field_name
= TYPE_FIELD_NAME (type
, i
);
1636 if (t_field_name
&& (strcmp_iw (t_field_name
, name
) == 0))
1638 return TYPE_FIELD_TYPE (type
, i
);
1640 else if (!t_field_name
|| *t_field_name
== '\0')
1642 struct type
*subtype
1643 = lookup_struct_elt_type (TYPE_FIELD_TYPE (type
, i
), name
, 1);
1645 if (subtype
!= NULL
)
1650 /* OK, it's not in this class. Recursively check the baseclasses. */
1651 for (i
= TYPE_N_BASECLASSES (type
) - 1; i
>= 0; i
--)
1655 t
= lookup_struct_elt_type (TYPE_BASECLASS (type
, i
), name
, 1);
1667 std::string type_name
= type_to_string (type
);
1668 error (_("Type %s has no component named %s."), type_name
.c_str (), name
);
1671 /* Store in *MAX the largest number representable by unsigned integer type
1675 get_unsigned_type_max (struct type
*type
, ULONGEST
*max
)
1679 type
= check_typedef (type
);
1680 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_INT
&& TYPE_UNSIGNED (type
));
1681 gdb_assert (TYPE_LENGTH (type
) <= sizeof (ULONGEST
));
1683 /* Written this way to avoid overflow. */
1684 n
= TYPE_LENGTH (type
) * TARGET_CHAR_BIT
;
1685 *max
= ((((ULONGEST
) 1 << (n
- 1)) - 1) << 1) | 1;
1688 /* Store in *MIN, *MAX the smallest and largest numbers representable by
1689 signed integer type TYPE. */
1692 get_signed_type_minmax (struct type
*type
, LONGEST
*min
, LONGEST
*max
)
1696 type
= check_typedef (type
);
1697 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_INT
&& !TYPE_UNSIGNED (type
));
1698 gdb_assert (TYPE_LENGTH (type
) <= sizeof (LONGEST
));
1700 n
= TYPE_LENGTH (type
) * TARGET_CHAR_BIT
;
1701 *min
= -((ULONGEST
) 1 << (n
- 1));
1702 *max
= ((ULONGEST
) 1 << (n
- 1)) - 1;
1705 /* Internal routine called by TYPE_VPTR_FIELDNO to return the value of
1706 cplus_stuff.vptr_fieldno.
1708 cplus_stuff is initialized to cplus_struct_default which does not
1709 set vptr_fieldno to -1 for portability reasons (IWBN to use C99
1710 designated initializers). We cope with that here. */
1713 internal_type_vptr_fieldno (struct type
*type
)
1715 type
= check_typedef (type
);
1716 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_STRUCT
1717 || TYPE_CODE (type
) == TYPE_CODE_UNION
);
1718 if (!HAVE_CPLUS_STRUCT (type
))
1720 return TYPE_RAW_CPLUS_SPECIFIC (type
)->vptr_fieldno
;
1723 /* Set the value of cplus_stuff.vptr_fieldno. */
1726 set_type_vptr_fieldno (struct type
*type
, int fieldno
)
1728 type
= check_typedef (type
);
1729 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_STRUCT
1730 || TYPE_CODE (type
) == TYPE_CODE_UNION
);
1731 if (!HAVE_CPLUS_STRUCT (type
))
1732 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
1733 TYPE_RAW_CPLUS_SPECIFIC (type
)->vptr_fieldno
= fieldno
;
1736 /* Internal routine called by TYPE_VPTR_BASETYPE to return the value of
1737 cplus_stuff.vptr_basetype. */
1740 internal_type_vptr_basetype (struct type
*type
)
1742 type
= check_typedef (type
);
1743 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_STRUCT
1744 || TYPE_CODE (type
) == TYPE_CODE_UNION
);
1745 gdb_assert (TYPE_SPECIFIC_FIELD (type
) == TYPE_SPECIFIC_CPLUS_STUFF
);
1746 return TYPE_RAW_CPLUS_SPECIFIC (type
)->vptr_basetype
;
1749 /* Set the value of cplus_stuff.vptr_basetype. */
1752 set_type_vptr_basetype (struct type
*type
, struct type
*basetype
)
1754 type
= check_typedef (type
);
1755 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_STRUCT
1756 || TYPE_CODE (type
) == TYPE_CODE_UNION
);
1757 if (!HAVE_CPLUS_STRUCT (type
))
1758 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
1759 TYPE_RAW_CPLUS_SPECIFIC (type
)->vptr_basetype
= basetype
;
1762 /* Lookup the vptr basetype/fieldno values for TYPE.
1763 If found store vptr_basetype in *BASETYPEP if non-NULL, and return
1764 vptr_fieldno. Also, if found and basetype is from the same objfile,
1766 If not found, return -1 and ignore BASETYPEP.
1767 Callers should be aware that in some cases (for example,
1768 the type or one of its baseclasses is a stub type and we are
1769 debugging a .o file, or the compiler uses DWARF-2 and is not GCC),
1770 this function will not be able to find the
1771 virtual function table pointer, and vptr_fieldno will remain -1 and
1772 vptr_basetype will remain NULL or incomplete. */
1775 get_vptr_fieldno (struct type
*type
, struct type
**basetypep
)
1777 type
= check_typedef (type
);
1779 if (TYPE_VPTR_FIELDNO (type
) < 0)
1783 /* We must start at zero in case the first (and only) baseclass
1784 is virtual (and hence we cannot share the table pointer). */
1785 for (i
= 0; i
< TYPE_N_BASECLASSES (type
); i
++)
1787 struct type
*baseclass
= check_typedef (TYPE_BASECLASS (type
, i
));
1789 struct type
*basetype
;
1791 fieldno
= get_vptr_fieldno (baseclass
, &basetype
);
1794 /* If the type comes from a different objfile we can't cache
1795 it, it may have a different lifetime. PR 2384 */
1796 if (TYPE_OBJFILE (type
) == TYPE_OBJFILE (basetype
))
1798 set_type_vptr_fieldno (type
, fieldno
);
1799 set_type_vptr_basetype (type
, basetype
);
1802 *basetypep
= basetype
;
1813 *basetypep
= TYPE_VPTR_BASETYPE (type
);
1814 return TYPE_VPTR_FIELDNO (type
);
1819 stub_noname_complaint (void)
1821 complaint (&symfile_complaints
, _("stub type has NULL name"));
1824 /* Worker for is_dynamic_type. */
1827 is_dynamic_type_internal (struct type
*type
, int top_level
)
1829 type
= check_typedef (type
);
1831 /* We only want to recognize references at the outermost level. */
1832 if (top_level
&& TYPE_CODE (type
) == TYPE_CODE_REF
)
1833 type
= check_typedef (TYPE_TARGET_TYPE (type
));
1835 /* Types that have a dynamic TYPE_DATA_LOCATION are considered
1836 dynamic, even if the type itself is statically defined.
1837 From a user's point of view, this may appear counter-intuitive;
1838 but it makes sense in this context, because the point is to determine
1839 whether any part of the type needs to be resolved before it can
1841 if (TYPE_DATA_LOCATION (type
) != NULL
1842 && (TYPE_DATA_LOCATION_KIND (type
) == PROP_LOCEXPR
1843 || TYPE_DATA_LOCATION_KIND (type
) == PROP_LOCLIST
))
1846 if (TYPE_ASSOCIATED_PROP (type
))
1849 if (TYPE_ALLOCATED_PROP (type
))
1852 switch (TYPE_CODE (type
))
1854 case TYPE_CODE_RANGE
:
1856 /* A range type is obviously dynamic if it has at least one
1857 dynamic bound. But also consider the range type to be
1858 dynamic when its subtype is dynamic, even if the bounds
1859 of the range type are static. It allows us to assume that
1860 the subtype of a static range type is also static. */
1861 return (!has_static_range (TYPE_RANGE_DATA (type
))
1862 || is_dynamic_type_internal (TYPE_TARGET_TYPE (type
), 0));
1865 case TYPE_CODE_ARRAY
:
1867 gdb_assert (TYPE_NFIELDS (type
) == 1);
1869 /* The array is dynamic if either the bounds are dynamic,
1870 or the elements it contains have a dynamic contents. */
1871 if (is_dynamic_type_internal (TYPE_INDEX_TYPE (type
), 0))
1873 return is_dynamic_type_internal (TYPE_TARGET_TYPE (type
), 0);
1876 case TYPE_CODE_STRUCT
:
1877 case TYPE_CODE_UNION
:
1881 for (i
= 0; i
< TYPE_NFIELDS (type
); ++i
)
1882 if (!field_is_static (&TYPE_FIELD (type
, i
))
1883 && is_dynamic_type_internal (TYPE_FIELD_TYPE (type
, i
), 0))
1892 /* See gdbtypes.h. */
1895 is_dynamic_type (struct type
*type
)
1897 return is_dynamic_type_internal (type
, 1);
1900 static struct type
*resolve_dynamic_type_internal
1901 (struct type
*type
, struct property_addr_info
*addr_stack
, int top_level
);
1903 /* Given a dynamic range type (dyn_range_type) and a stack of
1904 struct property_addr_info elements, return a static version
1907 static struct type
*
1908 resolve_dynamic_range (struct type
*dyn_range_type
,
1909 struct property_addr_info
*addr_stack
)
1912 struct type
*static_range_type
, *static_target_type
;
1913 const struct dynamic_prop
*prop
;
1914 struct dynamic_prop low_bound
, high_bound
;
1916 gdb_assert (TYPE_CODE (dyn_range_type
) == TYPE_CODE_RANGE
);
1918 prop
= &TYPE_RANGE_DATA (dyn_range_type
)->low
;
1919 if (dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
1921 low_bound
.kind
= PROP_CONST
;
1922 low_bound
.data
.const_val
= value
;
1926 low_bound
.kind
= PROP_UNDEFINED
;
1927 low_bound
.data
.const_val
= 0;
1930 prop
= &TYPE_RANGE_DATA (dyn_range_type
)->high
;
1931 if (dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
1933 high_bound
.kind
= PROP_CONST
;
1934 high_bound
.data
.const_val
= value
;
1936 if (TYPE_RANGE_DATA (dyn_range_type
)->flag_upper_bound_is_count
)
1937 high_bound
.data
.const_val
1938 = low_bound
.data
.const_val
+ high_bound
.data
.const_val
- 1;
1942 high_bound
.kind
= PROP_UNDEFINED
;
1943 high_bound
.data
.const_val
= 0;
1947 = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (dyn_range_type
),
1949 static_range_type
= create_range_type (copy_type (dyn_range_type
),
1951 &low_bound
, &high_bound
);
1952 TYPE_RANGE_DATA (static_range_type
)->flag_bound_evaluated
= 1;
1953 return static_range_type
;
1956 /* Resolves dynamic bound values of an array type TYPE to static ones.
1957 ADDR_STACK is a stack of struct property_addr_info to be used
1958 if needed during the dynamic resolution. */
1960 static struct type
*
1961 resolve_dynamic_array (struct type
*type
,
1962 struct property_addr_info
*addr_stack
)
1965 struct type
*elt_type
;
1966 struct type
*range_type
;
1967 struct type
*ary_dim
;
1968 struct dynamic_prop
*prop
;
1970 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_ARRAY
);
1972 type
= copy_type (type
);
1975 range_type
= check_typedef (TYPE_INDEX_TYPE (elt_type
));
1976 range_type
= resolve_dynamic_range (range_type
, addr_stack
);
1978 /* Resolve allocated/associated here before creating a new array type, which
1979 will update the length of the array accordingly. */
1980 prop
= TYPE_ALLOCATED_PROP (type
);
1981 if (prop
!= NULL
&& dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
1983 TYPE_DYN_PROP_ADDR (prop
) = value
;
1984 TYPE_DYN_PROP_KIND (prop
) = PROP_CONST
;
1986 prop
= TYPE_ASSOCIATED_PROP (type
);
1987 if (prop
!= NULL
&& dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
1989 TYPE_DYN_PROP_ADDR (prop
) = value
;
1990 TYPE_DYN_PROP_KIND (prop
) = PROP_CONST
;
1993 ary_dim
= check_typedef (TYPE_TARGET_TYPE (elt_type
));
1995 if (ary_dim
!= NULL
&& TYPE_CODE (ary_dim
) == TYPE_CODE_ARRAY
)
1996 elt_type
= resolve_dynamic_array (ary_dim
, addr_stack
);
1998 elt_type
= TYPE_TARGET_TYPE (type
);
2000 return create_array_type_with_stride (type
, elt_type
, range_type
,
2001 TYPE_FIELD_BITSIZE (type
, 0));
2004 /* Resolve dynamic bounds of members of the union TYPE to static
2005 bounds. ADDR_STACK is a stack of struct property_addr_info
2006 to be used if needed during the dynamic resolution. */
2008 static struct type
*
2009 resolve_dynamic_union (struct type
*type
,
2010 struct property_addr_info
*addr_stack
)
2012 struct type
*resolved_type
;
2014 unsigned int max_len
= 0;
2016 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_UNION
);
2018 resolved_type
= copy_type (type
);
2019 TYPE_FIELDS (resolved_type
)
2020 = (struct field
*) TYPE_ALLOC (resolved_type
,
2021 TYPE_NFIELDS (resolved_type
)
2022 * sizeof (struct field
));
2023 memcpy (TYPE_FIELDS (resolved_type
),
2025 TYPE_NFIELDS (resolved_type
) * sizeof (struct field
));
2026 for (i
= 0; i
< TYPE_NFIELDS (resolved_type
); ++i
)
2030 if (field_is_static (&TYPE_FIELD (type
, i
)))
2033 t
= resolve_dynamic_type_internal (TYPE_FIELD_TYPE (resolved_type
, i
),
2035 TYPE_FIELD_TYPE (resolved_type
, i
) = t
;
2036 if (TYPE_LENGTH (t
) > max_len
)
2037 max_len
= TYPE_LENGTH (t
);
2040 TYPE_LENGTH (resolved_type
) = max_len
;
2041 return resolved_type
;
2044 /* Resolve dynamic bounds of members of the struct TYPE to static
2045 bounds. ADDR_STACK is a stack of struct property_addr_info to
2046 be used if needed during the dynamic resolution. */
2048 static struct type
*
2049 resolve_dynamic_struct (struct type
*type
,
2050 struct property_addr_info
*addr_stack
)
2052 struct type
*resolved_type
;
2054 unsigned resolved_type_bit_length
= 0;
2056 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_STRUCT
);
2057 gdb_assert (TYPE_NFIELDS (type
) > 0);
2059 resolved_type
= copy_type (type
);
2060 TYPE_FIELDS (resolved_type
)
2061 = (struct field
*) TYPE_ALLOC (resolved_type
,
2062 TYPE_NFIELDS (resolved_type
)
2063 * sizeof (struct field
));
2064 memcpy (TYPE_FIELDS (resolved_type
),
2066 TYPE_NFIELDS (resolved_type
) * sizeof (struct field
));
2067 for (i
= 0; i
< TYPE_NFIELDS (resolved_type
); ++i
)
2069 unsigned new_bit_length
;
2070 struct property_addr_info pinfo
;
2072 if (field_is_static (&TYPE_FIELD (type
, i
)))
2075 /* As we know this field is not a static field, the field's
2076 field_loc_kind should be FIELD_LOC_KIND_BITPOS. Verify
2077 this is the case, but only trigger a simple error rather
2078 than an internal error if that fails. While failing
2079 that verification indicates a bug in our code, the error
2080 is not severe enough to suggest to the user he stops
2081 his debugging session because of it. */
2082 if (TYPE_FIELD_LOC_KIND (type
, i
) != FIELD_LOC_KIND_BITPOS
)
2083 error (_("Cannot determine struct field location"
2084 " (invalid location kind)"));
2086 pinfo
.type
= check_typedef (TYPE_FIELD_TYPE (type
, i
));
2087 pinfo
.valaddr
= addr_stack
->valaddr
;
2090 + (TYPE_FIELD_BITPOS (resolved_type
, i
) / TARGET_CHAR_BIT
));
2091 pinfo
.next
= addr_stack
;
2093 TYPE_FIELD_TYPE (resolved_type
, i
)
2094 = resolve_dynamic_type_internal (TYPE_FIELD_TYPE (resolved_type
, i
),
2096 gdb_assert (TYPE_FIELD_LOC_KIND (resolved_type
, i
)
2097 == FIELD_LOC_KIND_BITPOS
);
2099 new_bit_length
= TYPE_FIELD_BITPOS (resolved_type
, i
);
2100 if (TYPE_FIELD_BITSIZE (resolved_type
, i
) != 0)
2101 new_bit_length
+= TYPE_FIELD_BITSIZE (resolved_type
, i
);
2103 new_bit_length
+= (TYPE_LENGTH (TYPE_FIELD_TYPE (resolved_type
, i
))
2106 /* Normally, we would use the position and size of the last field
2107 to determine the size of the enclosing structure. But GCC seems
2108 to be encoding the position of some fields incorrectly when
2109 the struct contains a dynamic field that is not placed last.
2110 So we compute the struct size based on the field that has
2111 the highest position + size - probably the best we can do. */
2112 if (new_bit_length
> resolved_type_bit_length
)
2113 resolved_type_bit_length
= new_bit_length
;
2116 /* The length of a type won't change for fortran, but it does for C and Ada.
2117 For fortran the size of dynamic fields might change over time but not the
2118 type length of the structure. If we adapt it, we run into problems
2119 when calculating the element offset for arrays of structs. */
2120 if (current_language
->la_language
!= language_fortran
)
2121 TYPE_LENGTH (resolved_type
)
2122 = (resolved_type_bit_length
+ TARGET_CHAR_BIT
- 1) / TARGET_CHAR_BIT
;
2124 /* The Ada language uses this field as a cache for static fixed types: reset
2125 it as RESOLVED_TYPE must have its own static fixed type. */
2126 TYPE_TARGET_TYPE (resolved_type
) = NULL
;
2128 return resolved_type
;
2131 /* Worker for resolved_dynamic_type. */
2133 static struct type
*
2134 resolve_dynamic_type_internal (struct type
*type
,
2135 struct property_addr_info
*addr_stack
,
2138 struct type
*real_type
= check_typedef (type
);
2139 struct type
*resolved_type
= type
;
2140 struct dynamic_prop
*prop
;
2143 if (!is_dynamic_type_internal (real_type
, top_level
))
2146 if (TYPE_CODE (type
) == TYPE_CODE_TYPEDEF
)
2148 resolved_type
= copy_type (type
);
2149 TYPE_TARGET_TYPE (resolved_type
)
2150 = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (type
), addr_stack
,
2155 /* Before trying to resolve TYPE, make sure it is not a stub. */
2158 switch (TYPE_CODE (type
))
2162 struct property_addr_info pinfo
;
2164 pinfo
.type
= check_typedef (TYPE_TARGET_TYPE (type
));
2165 pinfo
.valaddr
= NULL
;
2166 if (addr_stack
->valaddr
!= NULL
)
2167 pinfo
.addr
= extract_typed_address (addr_stack
->valaddr
, type
);
2169 pinfo
.addr
= read_memory_typed_address (addr_stack
->addr
, type
);
2170 pinfo
.next
= addr_stack
;
2172 resolved_type
= copy_type (type
);
2173 TYPE_TARGET_TYPE (resolved_type
)
2174 = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (type
),
2179 case TYPE_CODE_ARRAY
:
2180 resolved_type
= resolve_dynamic_array (type
, addr_stack
);
2183 case TYPE_CODE_RANGE
:
2184 resolved_type
= resolve_dynamic_range (type
, addr_stack
);
2187 case TYPE_CODE_UNION
:
2188 resolved_type
= resolve_dynamic_union (type
, addr_stack
);
2191 case TYPE_CODE_STRUCT
:
2192 resolved_type
= resolve_dynamic_struct (type
, addr_stack
);
2197 /* Resolve data_location attribute. */
2198 prop
= TYPE_DATA_LOCATION (resolved_type
);
2200 && dwarf2_evaluate_property (prop
, NULL
, addr_stack
, &value
))
2202 TYPE_DYN_PROP_ADDR (prop
) = value
;
2203 TYPE_DYN_PROP_KIND (prop
) = PROP_CONST
;
2206 return resolved_type
;
2209 /* See gdbtypes.h */
2212 resolve_dynamic_type (struct type
*type
, const gdb_byte
*valaddr
,
2215 struct property_addr_info pinfo
2216 = {check_typedef (type
), valaddr
, addr
, NULL
};
2218 return resolve_dynamic_type_internal (type
, &pinfo
, 1);
2221 /* See gdbtypes.h */
2223 struct dynamic_prop
*
2224 get_dyn_prop (enum dynamic_prop_node_kind prop_kind
, const struct type
*type
)
2226 struct dynamic_prop_list
*node
= TYPE_DYN_PROP_LIST (type
);
2228 while (node
!= NULL
)
2230 if (node
->prop_kind
== prop_kind
)
2237 /* See gdbtypes.h */
2240 add_dyn_prop (enum dynamic_prop_node_kind prop_kind
, struct dynamic_prop prop
,
2241 struct type
*type
, struct objfile
*objfile
)
2243 struct dynamic_prop_list
*temp
;
2245 gdb_assert (TYPE_OBJFILE_OWNED (type
));
2247 temp
= XOBNEW (&objfile
->objfile_obstack
, struct dynamic_prop_list
);
2248 temp
->prop_kind
= prop_kind
;
2250 temp
->next
= TYPE_DYN_PROP_LIST (type
);
2252 TYPE_DYN_PROP_LIST (type
) = temp
;
2255 /* Remove dynamic property from TYPE in case it exists. */
2258 remove_dyn_prop (enum dynamic_prop_node_kind prop_kind
,
2261 struct dynamic_prop_list
*prev_node
, *curr_node
;
2263 curr_node
= TYPE_DYN_PROP_LIST (type
);
2266 while (NULL
!= curr_node
)
2268 if (curr_node
->prop_kind
== prop_kind
)
2270 /* Update the linked list but don't free anything.
2271 The property was allocated on objstack and it is not known
2272 if we are on top of it. Nevertheless, everything is released
2273 when the complete objstack is freed. */
2274 if (NULL
== prev_node
)
2275 TYPE_DYN_PROP_LIST (type
) = curr_node
->next
;
2277 prev_node
->next
= curr_node
->next
;
2282 prev_node
= curr_node
;
2283 curr_node
= curr_node
->next
;
2287 /* Find the real type of TYPE. This function returns the real type,
2288 after removing all layers of typedefs, and completing opaque or stub
2289 types. Completion changes the TYPE argument, but stripping of
2292 Instance flags (e.g. const/volatile) are preserved as typedefs are
2293 stripped. If necessary a new qualified form of the underlying type
2296 NOTE: This will return a typedef if TYPE_TARGET_TYPE for the typedef has
2297 not been computed and we're either in the middle of reading symbols, or
2298 there was no name for the typedef in the debug info.
2300 NOTE: Lookup of opaque types can throw errors for invalid symbol files.
2301 QUITs in the symbol reading code can also throw.
2302 Thus this function can throw an exception.
2304 If TYPE is a TYPE_CODE_TYPEDEF, its length is updated to the length of
2307 If this is a stubbed struct (i.e. declared as struct foo *), see if
2308 we can find a full definition in some other file. If so, copy this
2309 definition, so we can use it in future. There used to be a comment
2310 (but not any code) that if we don't find a full definition, we'd
2311 set a flag so we don't spend time in the future checking the same
2312 type. That would be a mistake, though--we might load in more
2313 symbols which contain a full definition for the type. */
2316 check_typedef (struct type
*type
)
2318 struct type
*orig_type
= type
;
2319 /* While we're removing typedefs, we don't want to lose qualifiers.
2320 E.g., const/volatile. */
2321 int instance_flags
= TYPE_INSTANCE_FLAGS (type
);
2325 while (TYPE_CODE (type
) == TYPE_CODE_TYPEDEF
)
2327 if (!TYPE_TARGET_TYPE (type
))
2332 /* It is dangerous to call lookup_symbol if we are currently
2333 reading a symtab. Infinite recursion is one danger. */
2334 if (currently_reading_symtab
)
2335 return make_qualified_type (type
, instance_flags
, NULL
);
2337 name
= type_name_no_tag (type
);
2338 /* FIXME: shouldn't we separately check the TYPE_NAME and
2339 the TYPE_TAG_NAME, and look in STRUCT_DOMAIN and/or
2340 VAR_DOMAIN as appropriate? (this code was written before
2341 TYPE_NAME and TYPE_TAG_NAME were separate). */
2344 stub_noname_complaint ();
2345 return make_qualified_type (type
, instance_flags
, NULL
);
2347 sym
= lookup_symbol (name
, 0, STRUCT_DOMAIN
, 0).symbol
;
2349 TYPE_TARGET_TYPE (type
) = SYMBOL_TYPE (sym
);
2350 else /* TYPE_CODE_UNDEF */
2351 TYPE_TARGET_TYPE (type
) = alloc_type_arch (get_type_arch (type
));
2353 type
= TYPE_TARGET_TYPE (type
);
2355 /* Preserve the instance flags as we traverse down the typedef chain.
2357 Handling address spaces/classes is nasty, what do we do if there's a
2359 E.g., what if an outer typedef marks the type as class_1 and an inner
2360 typedef marks the type as class_2?
2361 This is the wrong place to do such error checking. We leave it to
2362 the code that created the typedef in the first place to flag the
2363 error. We just pick the outer address space (akin to letting the
2364 outer cast in a chain of casting win), instead of assuming
2365 "it can't happen". */
2367 const int ALL_SPACES
= (TYPE_INSTANCE_FLAG_CODE_SPACE
2368 | TYPE_INSTANCE_FLAG_DATA_SPACE
);
2369 const int ALL_CLASSES
= TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL
;
2370 int new_instance_flags
= TYPE_INSTANCE_FLAGS (type
);
2372 /* Treat code vs data spaces and address classes separately. */
2373 if ((instance_flags
& ALL_SPACES
) != 0)
2374 new_instance_flags
&= ~ALL_SPACES
;
2375 if ((instance_flags
& ALL_CLASSES
) != 0)
2376 new_instance_flags
&= ~ALL_CLASSES
;
2378 instance_flags
|= new_instance_flags
;
2382 /* If this is a struct/class/union with no fields, then check
2383 whether a full definition exists somewhere else. This is for
2384 systems where a type definition with no fields is issued for such
2385 types, instead of identifying them as stub types in the first
2388 if (TYPE_IS_OPAQUE (type
)
2389 && opaque_type_resolution
2390 && !currently_reading_symtab
)
2392 const char *name
= type_name_no_tag (type
);
2393 struct type
*newtype
;
2397 stub_noname_complaint ();
2398 return make_qualified_type (type
, instance_flags
, NULL
);
2400 newtype
= lookup_transparent_type (name
);
2404 /* If the resolved type and the stub are in the same
2405 objfile, then replace the stub type with the real deal.
2406 But if they're in separate objfiles, leave the stub
2407 alone; we'll just look up the transparent type every time
2408 we call check_typedef. We can't create pointers between
2409 types allocated to different objfiles, since they may
2410 have different lifetimes. Trying to copy NEWTYPE over to
2411 TYPE's objfile is pointless, too, since you'll have to
2412 move over any other types NEWTYPE refers to, which could
2413 be an unbounded amount of stuff. */
2414 if (TYPE_OBJFILE (newtype
) == TYPE_OBJFILE (type
))
2415 type
= make_qualified_type (newtype
,
2416 TYPE_INSTANCE_FLAGS (type
),
2422 /* Otherwise, rely on the stub flag being set for opaque/stubbed
2424 else if (TYPE_STUB (type
) && !currently_reading_symtab
)
2426 const char *name
= type_name_no_tag (type
);
2427 /* FIXME: shouldn't we separately check the TYPE_NAME and the
2428 TYPE_TAG_NAME, and look in STRUCT_DOMAIN and/or VAR_DOMAIN
2429 as appropriate? (this code was written before TYPE_NAME and
2430 TYPE_TAG_NAME were separate). */
2435 stub_noname_complaint ();
2436 return make_qualified_type (type
, instance_flags
, NULL
);
2438 sym
= lookup_symbol (name
, 0, STRUCT_DOMAIN
, 0).symbol
;
2441 /* Same as above for opaque types, we can replace the stub
2442 with the complete type only if they are in the same
2444 if (TYPE_OBJFILE (SYMBOL_TYPE(sym
)) == TYPE_OBJFILE (type
))
2445 type
= make_qualified_type (SYMBOL_TYPE (sym
),
2446 TYPE_INSTANCE_FLAGS (type
),
2449 type
= SYMBOL_TYPE (sym
);
2453 if (TYPE_TARGET_STUB (type
))
2455 struct type
*target_type
= check_typedef (TYPE_TARGET_TYPE (type
));
2457 if (TYPE_STUB (target_type
) || TYPE_TARGET_STUB (target_type
))
2459 /* Nothing we can do. */
2461 else if (TYPE_CODE (type
) == TYPE_CODE_RANGE
)
2463 TYPE_LENGTH (type
) = TYPE_LENGTH (target_type
);
2464 TYPE_TARGET_STUB (type
) = 0;
2468 type
= make_qualified_type (type
, instance_flags
, NULL
);
2470 /* Cache TYPE_LENGTH for future use. */
2471 TYPE_LENGTH (orig_type
) = TYPE_LENGTH (type
);
2476 /* Parse a type expression in the string [P..P+LENGTH). If an error
2477 occurs, silently return a void type. */
2479 static struct type
*
2480 safe_parse_type (struct gdbarch
*gdbarch
, char *p
, int length
)
2482 struct ui_file
*saved_gdb_stderr
;
2483 struct type
*type
= NULL
; /* Initialize to keep gcc happy. */
2485 /* Suppress error messages. */
2486 saved_gdb_stderr
= gdb_stderr
;
2487 gdb_stderr
= &null_stream
;
2489 /* Call parse_and_eval_type() without fear of longjmp()s. */
2492 type
= parse_and_eval_type (p
, length
);
2494 CATCH (except
, RETURN_MASK_ERROR
)
2496 type
= builtin_type (gdbarch
)->builtin_void
;
2500 /* Stop suppressing error messages. */
2501 gdb_stderr
= saved_gdb_stderr
;
2506 /* Ugly hack to convert method stubs into method types.
2508 He ain't kiddin'. This demangles the name of the method into a
2509 string including argument types, parses out each argument type,
2510 generates a string casting a zero to that type, evaluates the
2511 string, and stuffs the resulting type into an argtype vector!!!
2512 Then it knows the type of the whole function (including argument
2513 types for overloading), which info used to be in the stab's but was
2514 removed to hack back the space required for them. */
2517 check_stub_method (struct type
*type
, int method_id
, int signature_id
)
2519 struct gdbarch
*gdbarch
= get_type_arch (type
);
2521 char *mangled_name
= gdb_mangle_name (type
, method_id
, signature_id
);
2522 char *demangled_name
= gdb_demangle (mangled_name
,
2523 DMGL_PARAMS
| DMGL_ANSI
);
2524 char *argtypetext
, *p
;
2525 int depth
= 0, argcount
= 1;
2526 struct field
*argtypes
;
2529 /* Make sure we got back a function string that we can use. */
2531 p
= strchr (demangled_name
, '(');
2535 if (demangled_name
== NULL
|| p
== NULL
)
2536 error (_("Internal: Cannot demangle mangled name `%s'."),
2539 /* Now, read in the parameters that define this type. */
2544 if (*p
== '(' || *p
== '<')
2548 else if (*p
== ')' || *p
== '>')
2552 else if (*p
== ',' && depth
== 0)
2560 /* If we read one argument and it was ``void'', don't count it. */
2561 if (startswith (argtypetext
, "(void)"))
2564 /* We need one extra slot, for the THIS pointer. */
2566 argtypes
= (struct field
*)
2567 TYPE_ALLOC (type
, (argcount
+ 1) * sizeof (struct field
));
2570 /* Add THIS pointer for non-static methods. */
2571 f
= TYPE_FN_FIELDLIST1 (type
, method_id
);
2572 if (TYPE_FN_FIELD_STATIC_P (f
, signature_id
))
2576 argtypes
[0].type
= lookup_pointer_type (type
);
2580 if (*p
!= ')') /* () means no args, skip while. */
2585 if (depth
<= 0 && (*p
== ',' || *p
== ')'))
2587 /* Avoid parsing of ellipsis, they will be handled below.
2588 Also avoid ``void'' as above. */
2589 if (strncmp (argtypetext
, "...", p
- argtypetext
) != 0
2590 && strncmp (argtypetext
, "void", p
- argtypetext
) != 0)
2592 argtypes
[argcount
].type
=
2593 safe_parse_type (gdbarch
, argtypetext
, p
- argtypetext
);
2596 argtypetext
= p
+ 1;
2599 if (*p
== '(' || *p
== '<')
2603 else if (*p
== ')' || *p
== '>')
2612 TYPE_FN_FIELD_PHYSNAME (f
, signature_id
) = mangled_name
;
2614 /* Now update the old "stub" type into a real type. */
2615 mtype
= TYPE_FN_FIELD_TYPE (f
, signature_id
);
2616 /* MTYPE may currently be a function (TYPE_CODE_FUNC).
2617 We want a method (TYPE_CODE_METHOD). */
2618 smash_to_method_type (mtype
, type
, TYPE_TARGET_TYPE (mtype
),
2619 argtypes
, argcount
, p
[-2] == '.');
2620 TYPE_STUB (mtype
) = 0;
2621 TYPE_FN_FIELD_STUB (f
, signature_id
) = 0;
2623 xfree (demangled_name
);
2626 /* This is the external interface to check_stub_method, above. This
2627 function unstubs all of the signatures for TYPE's METHOD_ID method
2628 name. After calling this function TYPE_FN_FIELD_STUB will be
2629 cleared for each signature and TYPE_FN_FIELDLIST_NAME will be
2632 This function unfortunately can not die until stabs do. */
2635 check_stub_method_group (struct type
*type
, int method_id
)
2637 int len
= TYPE_FN_FIELDLIST_LENGTH (type
, method_id
);
2638 struct fn_field
*f
= TYPE_FN_FIELDLIST1 (type
, method_id
);
2639 int j
, found_stub
= 0;
2641 for (j
= 0; j
< len
; j
++)
2642 if (TYPE_FN_FIELD_STUB (f
, j
))
2645 check_stub_method (type
, method_id
, j
);
2648 /* GNU v3 methods with incorrect names were corrected when we read
2649 in type information, because it was cheaper to do it then. The
2650 only GNU v2 methods with incorrect method names are operators and
2651 destructors; destructors were also corrected when we read in type
2654 Therefore the only thing we need to handle here are v2 operator
2656 if (found_stub
&& !startswith (TYPE_FN_FIELD_PHYSNAME (f
, 0), "_Z"))
2659 char dem_opname
[256];
2661 ret
= cplus_demangle_opname (TYPE_FN_FIELDLIST_NAME (type
,
2663 dem_opname
, DMGL_ANSI
);
2665 ret
= cplus_demangle_opname (TYPE_FN_FIELDLIST_NAME (type
,
2669 TYPE_FN_FIELDLIST_NAME (type
, method_id
) = xstrdup (dem_opname
);
2673 /* Ensure it is in .rodata (if available) by workarounding GCC PR 44690. */
2674 const struct cplus_struct_type cplus_struct_default
= { };
2677 allocate_cplus_struct_type (struct type
*type
)
2679 if (HAVE_CPLUS_STRUCT (type
))
2680 /* Structure was already allocated. Nothing more to do. */
2683 TYPE_SPECIFIC_FIELD (type
) = TYPE_SPECIFIC_CPLUS_STUFF
;
2684 TYPE_RAW_CPLUS_SPECIFIC (type
) = (struct cplus_struct_type
*)
2685 TYPE_ALLOC (type
, sizeof (struct cplus_struct_type
));
2686 *(TYPE_RAW_CPLUS_SPECIFIC (type
)) = cplus_struct_default
;
2687 set_type_vptr_fieldno (type
, -1);
2690 const struct gnat_aux_type gnat_aux_default
=
2693 /* Set the TYPE's type-specific kind to TYPE_SPECIFIC_GNAT_STUFF,
2694 and allocate the associated gnat-specific data. The gnat-specific
2695 data is also initialized to gnat_aux_default. */
2698 allocate_gnat_aux_type (struct type
*type
)
2700 TYPE_SPECIFIC_FIELD (type
) = TYPE_SPECIFIC_GNAT_STUFF
;
2701 TYPE_GNAT_SPECIFIC (type
) = (struct gnat_aux_type
*)
2702 TYPE_ALLOC (type
, sizeof (struct gnat_aux_type
));
2703 *(TYPE_GNAT_SPECIFIC (type
)) = gnat_aux_default
;
2706 /* Helper function to initialize a newly allocated type. Set type code
2707 to CODE and initialize the type-specific fields accordingly. */
2710 set_type_code (struct type
*type
, enum type_code code
)
2712 TYPE_CODE (type
) = code
;
2716 case TYPE_CODE_STRUCT
:
2717 case TYPE_CODE_UNION
:
2718 case TYPE_CODE_NAMESPACE
:
2719 INIT_CPLUS_SPECIFIC (type
);
2722 TYPE_SPECIFIC_FIELD (type
) = TYPE_SPECIFIC_FLOATFORMAT
;
2724 case TYPE_CODE_FUNC
:
2725 INIT_FUNC_SPECIFIC (type
);
2730 /* Helper function to verify floating-point format and size.
2731 BIT is the type size in bits; if BIT equals -1, the size is
2732 determined by the floatformat. Returns size to be used. */
2735 verify_floatformat (int bit
, const struct floatformat
**floatformats
)
2737 gdb_assert (floatformats
!= NULL
);
2738 gdb_assert (floatformats
[0] != NULL
&& floatformats
[1] != NULL
);
2741 bit
= floatformats
[0]->totalsize
;
2742 gdb_assert (bit
>= 0);
2744 size_t len
= bit
/ TARGET_CHAR_BIT
;
2745 gdb_assert (len
>= floatformat_totalsize_bytes (floatformats
[0]));
2746 gdb_assert (len
>= floatformat_totalsize_bytes (floatformats
[1]));
2751 /* Helper function to initialize the standard scalar types.
2753 If NAME is non-NULL, then it is used to initialize the type name.
2754 Note that NAME is not copied; it is required to have a lifetime at
2755 least as long as OBJFILE. */
2758 init_type (struct objfile
*objfile
, enum type_code code
, int length
,
2763 type
= alloc_type (objfile
);
2764 set_type_code (type
, code
);
2765 TYPE_LENGTH (type
) = length
;
2766 TYPE_NAME (type
) = name
;
2771 /* Allocate a TYPE_CODE_INT type structure associated with OBJFILE.
2772 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
2773 the type's TYPE_UNSIGNED flag. NAME is the type name. */
2776 init_integer_type (struct objfile
*objfile
,
2777 int bit
, int unsigned_p
, const char *name
)
2781 t
= init_type (objfile
, TYPE_CODE_INT
, bit
/ TARGET_CHAR_BIT
, name
);
2783 TYPE_UNSIGNED (t
) = 1;
2788 /* Allocate a TYPE_CODE_CHAR type structure associated with OBJFILE.
2789 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
2790 the type's TYPE_UNSIGNED flag. NAME is the type name. */
2793 init_character_type (struct objfile
*objfile
,
2794 int bit
, int unsigned_p
, const char *name
)
2798 t
= init_type (objfile
, TYPE_CODE_CHAR
, bit
/ TARGET_CHAR_BIT
, name
);
2800 TYPE_UNSIGNED (t
) = 1;
2805 /* Allocate a TYPE_CODE_BOOL type structure associated with OBJFILE.
2806 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
2807 the type's TYPE_UNSIGNED flag. NAME is the type name. */
2810 init_boolean_type (struct objfile
*objfile
,
2811 int bit
, int unsigned_p
, const char *name
)
2815 t
= init_type (objfile
, TYPE_CODE_BOOL
, bit
/ TARGET_CHAR_BIT
, name
);
2817 TYPE_UNSIGNED (t
) = 1;
2822 /* Allocate a TYPE_CODE_FLT type structure associated with OBJFILE.
2823 BIT is the type size in bits; if BIT equals -1, the size is
2824 determined by the floatformat. NAME is the type name. Set the
2825 TYPE_FLOATFORMAT from FLOATFORMATS. */
2828 init_float_type (struct objfile
*objfile
,
2829 int bit
, const char *name
,
2830 const struct floatformat
**floatformats
)
2834 bit
= verify_floatformat (bit
, floatformats
);
2835 t
= init_type (objfile
, TYPE_CODE_FLT
, bit
/ TARGET_CHAR_BIT
, name
);
2836 TYPE_FLOATFORMAT (t
) = floatformats
;
2841 /* Allocate a TYPE_CODE_DECFLOAT type structure associated with OBJFILE.
2842 BIT is the type size in bits. NAME is the type name. */
2845 init_decfloat_type (struct objfile
*objfile
, int bit
, const char *name
)
2849 t
= init_type (objfile
, TYPE_CODE_DECFLOAT
, bit
/ TARGET_CHAR_BIT
, name
);
2853 /* Allocate a TYPE_CODE_COMPLEX type structure associated with OBJFILE.
2854 NAME is the type name. TARGET_TYPE is the component float type. */
2857 init_complex_type (struct objfile
*objfile
,
2858 const char *name
, struct type
*target_type
)
2862 t
= init_type (objfile
, TYPE_CODE_COMPLEX
,
2863 2 * TYPE_LENGTH (target_type
), name
);
2864 TYPE_TARGET_TYPE (t
) = target_type
;
2868 /* Allocate a TYPE_CODE_PTR type structure associated with OBJFILE.
2869 BIT is the pointer type size in bits. NAME is the type name.
2870 TARGET_TYPE is the pointer target type. Always sets the pointer type's
2871 TYPE_UNSIGNED flag. */
2874 init_pointer_type (struct objfile
*objfile
,
2875 int bit
, const char *name
, struct type
*target_type
)
2879 t
= init_type (objfile
, TYPE_CODE_PTR
, bit
/ TARGET_CHAR_BIT
, name
);
2880 TYPE_TARGET_TYPE (t
) = target_type
;
2881 TYPE_UNSIGNED (t
) = 1;
2886 /* Queries on types. */
2889 can_dereference (struct type
*t
)
2891 /* FIXME: Should we return true for references as well as
2893 t
= check_typedef (t
);
2896 && TYPE_CODE (t
) == TYPE_CODE_PTR
2897 && TYPE_CODE (TYPE_TARGET_TYPE (t
)) != TYPE_CODE_VOID
);
2901 is_integral_type (struct type
*t
)
2903 t
= check_typedef (t
);
2906 && ((TYPE_CODE (t
) == TYPE_CODE_INT
)
2907 || (TYPE_CODE (t
) == TYPE_CODE_ENUM
)
2908 || (TYPE_CODE (t
) == TYPE_CODE_FLAGS
)
2909 || (TYPE_CODE (t
) == TYPE_CODE_CHAR
)
2910 || (TYPE_CODE (t
) == TYPE_CODE_RANGE
)
2911 || (TYPE_CODE (t
) == TYPE_CODE_BOOL
)));
2914 /* Return true if TYPE is scalar. */
2917 is_scalar_type (struct type
*type
)
2919 type
= check_typedef (type
);
2921 switch (TYPE_CODE (type
))
2923 case TYPE_CODE_ARRAY
:
2924 case TYPE_CODE_STRUCT
:
2925 case TYPE_CODE_UNION
:
2927 case TYPE_CODE_STRING
:
2934 /* Return true if T is scalar, or a composite type which in practice has
2935 the memory layout of a scalar type. E.g., an array or struct with only
2936 one scalar element inside it, or a union with only scalar elements. */
2939 is_scalar_type_recursive (struct type
*t
)
2941 t
= check_typedef (t
);
2943 if (is_scalar_type (t
))
2945 /* Are we dealing with an array or string of known dimensions? */
2946 else if ((TYPE_CODE (t
) == TYPE_CODE_ARRAY
2947 || TYPE_CODE (t
) == TYPE_CODE_STRING
) && TYPE_NFIELDS (t
) == 1
2948 && TYPE_CODE (TYPE_INDEX_TYPE (t
)) == TYPE_CODE_RANGE
)
2950 LONGEST low_bound
, high_bound
;
2951 struct type
*elt_type
= check_typedef (TYPE_TARGET_TYPE (t
));
2953 get_discrete_bounds (TYPE_INDEX_TYPE (t
), &low_bound
, &high_bound
);
2955 return high_bound
== low_bound
&& is_scalar_type_recursive (elt_type
);
2957 /* Are we dealing with a struct with one element? */
2958 else if (TYPE_CODE (t
) == TYPE_CODE_STRUCT
&& TYPE_NFIELDS (t
) == 1)
2959 return is_scalar_type_recursive (TYPE_FIELD_TYPE (t
, 0));
2960 else if (TYPE_CODE (t
) == TYPE_CODE_UNION
)
2962 int i
, n
= TYPE_NFIELDS (t
);
2964 /* If all elements of the union are scalar, then the union is scalar. */
2965 for (i
= 0; i
< n
; i
++)
2966 if (!is_scalar_type_recursive (TYPE_FIELD_TYPE (t
, i
)))
2975 /* Return true is T is a class or a union. False otherwise. */
2978 class_or_union_p (const struct type
*t
)
2980 return (TYPE_CODE (t
) == TYPE_CODE_STRUCT
2981 || TYPE_CODE (t
) == TYPE_CODE_UNION
);
2984 /* A helper function which returns true if types A and B represent the
2985 "same" class type. This is true if the types have the same main
2986 type, or the same name. */
2989 class_types_same_p (const struct type
*a
, const struct type
*b
)
2991 return (TYPE_MAIN_TYPE (a
) == TYPE_MAIN_TYPE (b
)
2992 || (TYPE_NAME (a
) && TYPE_NAME (b
)
2993 && !strcmp (TYPE_NAME (a
), TYPE_NAME (b
))));
2996 /* If BASE is an ancestor of DCLASS return the distance between them.
2997 otherwise return -1;
3001 class B: public A {};
3002 class C: public B {};
3005 distance_to_ancestor (A, A, 0) = 0
3006 distance_to_ancestor (A, B, 0) = 1
3007 distance_to_ancestor (A, C, 0) = 2
3008 distance_to_ancestor (A, D, 0) = 3
3010 If PUBLIC is 1 then only public ancestors are considered,
3011 and the function returns the distance only if BASE is a public ancestor
3015 distance_to_ancestor (A, D, 1) = -1. */
3018 distance_to_ancestor (struct type
*base
, struct type
*dclass
, int is_public
)
3023 base
= check_typedef (base
);
3024 dclass
= check_typedef (dclass
);
3026 if (class_types_same_p (base
, dclass
))
3029 for (i
= 0; i
< TYPE_N_BASECLASSES (dclass
); i
++)
3031 if (is_public
&& ! BASETYPE_VIA_PUBLIC (dclass
, i
))
3034 d
= distance_to_ancestor (base
, TYPE_BASECLASS (dclass
, i
), is_public
);
3042 /* Check whether BASE is an ancestor or base class or DCLASS
3043 Return 1 if so, and 0 if not.
3044 Note: If BASE and DCLASS are of the same type, this function
3045 will return 1. So for some class A, is_ancestor (A, A) will
3049 is_ancestor (struct type
*base
, struct type
*dclass
)
3051 return distance_to_ancestor (base
, dclass
, 0) >= 0;
3054 /* Like is_ancestor, but only returns true when BASE is a public
3055 ancestor of DCLASS. */
3058 is_public_ancestor (struct type
*base
, struct type
*dclass
)
3060 return distance_to_ancestor (base
, dclass
, 1) >= 0;
3063 /* A helper function for is_unique_ancestor. */
3066 is_unique_ancestor_worker (struct type
*base
, struct type
*dclass
,
3068 const gdb_byte
*valaddr
, int embedded_offset
,
3069 CORE_ADDR address
, struct value
*val
)
3073 base
= check_typedef (base
);
3074 dclass
= check_typedef (dclass
);
3076 for (i
= 0; i
< TYPE_N_BASECLASSES (dclass
) && count
< 2; ++i
)
3081 iter
= check_typedef (TYPE_BASECLASS (dclass
, i
));
3083 this_offset
= baseclass_offset (dclass
, i
, valaddr
, embedded_offset
,
3086 if (class_types_same_p (base
, iter
))
3088 /* If this is the first subclass, set *OFFSET and set count
3089 to 1. Otherwise, if this is at the same offset as
3090 previous instances, do nothing. Otherwise, increment
3094 *offset
= this_offset
;
3097 else if (this_offset
== *offset
)
3105 count
+= is_unique_ancestor_worker (base
, iter
, offset
,
3107 embedded_offset
+ this_offset
,
3114 /* Like is_ancestor, but only returns true if BASE is a unique base
3115 class of the type of VAL. */
3118 is_unique_ancestor (struct type
*base
, struct value
*val
)
3122 return is_unique_ancestor_worker (base
, value_type (val
), &offset
,
3123 value_contents_for_printing (val
),
3124 value_embedded_offset (val
),
3125 value_address (val
), val
) == 1;
3129 /* Overload resolution. */
3131 /* Return the sum of the rank of A with the rank of B. */
3134 sum_ranks (struct rank a
, struct rank b
)
3137 c
.rank
= a
.rank
+ b
.rank
;
3138 c
.subrank
= a
.subrank
+ b
.subrank
;
3142 /* Compare rank A and B and return:
3144 1 if a is better than b
3145 -1 if b is better than a. */
3148 compare_ranks (struct rank a
, struct rank b
)
3150 if (a
.rank
== b
.rank
)
3152 if (a
.subrank
== b
.subrank
)
3154 if (a
.subrank
< b
.subrank
)
3156 if (a
.subrank
> b
.subrank
)
3160 if (a
.rank
< b
.rank
)
3163 /* a.rank > b.rank */
3167 /* Functions for overload resolution begin here. */
3169 /* Compare two badness vectors A and B and return the result.
3170 0 => A and B are identical
3171 1 => A and B are incomparable
3172 2 => A is better than B
3173 3 => A is worse than B */
3176 compare_badness (struct badness_vector
*a
, struct badness_vector
*b
)
3180 short found_pos
= 0; /* any positives in c? */
3181 short found_neg
= 0; /* any negatives in c? */
3183 /* differing lengths => incomparable */
3184 if (a
->length
!= b
->length
)
3187 /* Subtract b from a */
3188 for (i
= 0; i
< a
->length
; i
++)
3190 tmp
= compare_ranks (b
->rank
[i
], a
->rank
[i
]);
3200 return 1; /* incomparable */
3202 return 3; /* A > B */
3208 return 2; /* A < B */
3210 return 0; /* A == B */
3214 /* Rank a function by comparing its parameter types (PARMS, length
3215 NPARMS), to the types of an argument list (ARGS, length NARGS).
3216 Return a pointer to a badness vector. This has NARGS + 1
3219 struct badness_vector
*
3220 rank_function (struct type
**parms
, int nparms
,
3221 struct value
**args
, int nargs
)
3224 struct badness_vector
*bv
= XNEW (struct badness_vector
);
3225 int min_len
= nparms
< nargs
? nparms
: nargs
;
3227 bv
->length
= nargs
+ 1; /* add 1 for the length-match rank. */
3228 bv
->rank
= XNEWVEC (struct rank
, nargs
+ 1);
3230 /* First compare the lengths of the supplied lists.
3231 If there is a mismatch, set it to a high value. */
3233 /* pai/1997-06-03 FIXME: when we have debug info about default
3234 arguments and ellipsis parameter lists, we should consider those
3235 and rank the length-match more finely. */
3237 LENGTH_MATCH (bv
) = (nargs
!= nparms
)
3238 ? LENGTH_MISMATCH_BADNESS
3239 : EXACT_MATCH_BADNESS
;
3241 /* Now rank all the parameters of the candidate function. */
3242 for (i
= 1; i
<= min_len
; i
++)
3243 bv
->rank
[i
] = rank_one_type (parms
[i
- 1], value_type (args
[i
- 1]),
3246 /* If more arguments than parameters, add dummy entries. */
3247 for (i
= min_len
+ 1; i
<= nargs
; i
++)
3248 bv
->rank
[i
] = TOO_FEW_PARAMS_BADNESS
;
3253 /* Compare the names of two integer types, assuming that any sign
3254 qualifiers have been checked already. We do it this way because
3255 there may be an "int" in the name of one of the types. */
3258 integer_types_same_name_p (const char *first
, const char *second
)
3260 int first_p
, second_p
;
3262 /* If both are shorts, return 1; if neither is a short, keep
3264 first_p
= (strstr (first
, "short") != NULL
);
3265 second_p
= (strstr (second
, "short") != NULL
);
3266 if (first_p
&& second_p
)
3268 if (first_p
|| second_p
)
3271 /* Likewise for long. */
3272 first_p
= (strstr (first
, "long") != NULL
);
3273 second_p
= (strstr (second
, "long") != NULL
);
3274 if (first_p
&& second_p
)
3276 if (first_p
|| second_p
)
3279 /* Likewise for char. */
3280 first_p
= (strstr (first
, "char") != NULL
);
3281 second_p
= (strstr (second
, "char") != NULL
);
3282 if (first_p
&& second_p
)
3284 if (first_p
|| second_p
)
3287 /* They must both be ints. */
3291 /* Compares type A to type B returns 1 if the represent the same type
3295 types_equal (struct type
*a
, struct type
*b
)
3297 /* Identical type pointers. */
3298 /* However, this still doesn't catch all cases of same type for b
3299 and a. The reason is that builtin types are different from
3300 the same ones constructed from the object. */
3304 /* Resolve typedefs */
3305 if (TYPE_CODE (a
) == TYPE_CODE_TYPEDEF
)
3306 a
= check_typedef (a
);
3307 if (TYPE_CODE (b
) == TYPE_CODE_TYPEDEF
)
3308 b
= check_typedef (b
);
3310 /* If after resolving typedefs a and b are not of the same type
3311 code then they are not equal. */
3312 if (TYPE_CODE (a
) != TYPE_CODE (b
))
3315 /* If a and b are both pointers types or both reference types then
3316 they are equal of the same type iff the objects they refer to are
3317 of the same type. */
3318 if (TYPE_CODE (a
) == TYPE_CODE_PTR
3319 || TYPE_CODE (a
) == TYPE_CODE_REF
)
3320 return types_equal (TYPE_TARGET_TYPE (a
),
3321 TYPE_TARGET_TYPE (b
));
3323 /* Well, damnit, if the names are exactly the same, I'll say they
3324 are exactly the same. This happens when we generate method
3325 stubs. The types won't point to the same address, but they
3326 really are the same. */
3328 if (TYPE_NAME (a
) && TYPE_NAME (b
)
3329 && strcmp (TYPE_NAME (a
), TYPE_NAME (b
)) == 0)
3332 /* Check if identical after resolving typedefs. */
3336 /* Two function types are equal if their argument and return types
3338 if (TYPE_CODE (a
) == TYPE_CODE_FUNC
)
3342 if (TYPE_NFIELDS (a
) != TYPE_NFIELDS (b
))
3345 if (!types_equal (TYPE_TARGET_TYPE (a
), TYPE_TARGET_TYPE (b
)))
3348 for (i
= 0; i
< TYPE_NFIELDS (a
); ++i
)
3349 if (!types_equal (TYPE_FIELD_TYPE (a
, i
), TYPE_FIELD_TYPE (b
, i
)))
3358 /* Deep comparison of types. */
3360 /* An entry in the type-equality bcache. */
3362 typedef struct type_equality_entry
3364 struct type
*type1
, *type2
;
3365 } type_equality_entry_d
;
3367 DEF_VEC_O (type_equality_entry_d
);
3369 /* A helper function to compare two strings. Returns 1 if they are
3370 the same, 0 otherwise. Handles NULLs properly. */
3373 compare_maybe_null_strings (const char *s
, const char *t
)
3375 if (s
== NULL
&& t
!= NULL
)
3377 else if (s
!= NULL
&& t
== NULL
)
3379 else if (s
== NULL
&& t
== NULL
)
3381 return strcmp (s
, t
) == 0;
3384 /* A helper function for check_types_worklist that checks two types for
3385 "deep" equality. Returns non-zero if the types are considered the
3386 same, zero otherwise. */
3389 check_types_equal (struct type
*type1
, struct type
*type2
,
3390 VEC (type_equality_entry_d
) **worklist
)
3392 type1
= check_typedef (type1
);
3393 type2
= check_typedef (type2
);
3398 if (TYPE_CODE (type1
) != TYPE_CODE (type2
)
3399 || TYPE_LENGTH (type1
) != TYPE_LENGTH (type2
)
3400 || TYPE_UNSIGNED (type1
) != TYPE_UNSIGNED (type2
)
3401 || TYPE_NOSIGN (type1
) != TYPE_NOSIGN (type2
)
3402 || TYPE_VARARGS (type1
) != TYPE_VARARGS (type2
)
3403 || TYPE_VECTOR (type1
) != TYPE_VECTOR (type2
)
3404 || TYPE_NOTTEXT (type1
) != TYPE_NOTTEXT (type2
)
3405 || TYPE_INSTANCE_FLAGS (type1
) != TYPE_INSTANCE_FLAGS (type2
)
3406 || TYPE_NFIELDS (type1
) != TYPE_NFIELDS (type2
))
3409 if (!compare_maybe_null_strings (TYPE_TAG_NAME (type1
),
3410 TYPE_TAG_NAME (type2
)))
3412 if (!compare_maybe_null_strings (TYPE_NAME (type1
), TYPE_NAME (type2
)))
3415 if (TYPE_CODE (type1
) == TYPE_CODE_RANGE
)
3417 if (memcmp (TYPE_RANGE_DATA (type1
), TYPE_RANGE_DATA (type2
),
3418 sizeof (*TYPE_RANGE_DATA (type1
))) != 0)
3425 for (i
= 0; i
< TYPE_NFIELDS (type1
); ++i
)
3427 const struct field
*field1
= &TYPE_FIELD (type1
, i
);
3428 const struct field
*field2
= &TYPE_FIELD (type2
, i
);
3429 struct type_equality_entry entry
;
3431 if (FIELD_ARTIFICIAL (*field1
) != FIELD_ARTIFICIAL (*field2
)
3432 || FIELD_BITSIZE (*field1
) != FIELD_BITSIZE (*field2
)
3433 || FIELD_LOC_KIND (*field1
) != FIELD_LOC_KIND (*field2
))
3435 if (!compare_maybe_null_strings (FIELD_NAME (*field1
),
3436 FIELD_NAME (*field2
)))
3438 switch (FIELD_LOC_KIND (*field1
))
3440 case FIELD_LOC_KIND_BITPOS
:
3441 if (FIELD_BITPOS (*field1
) != FIELD_BITPOS (*field2
))
3444 case FIELD_LOC_KIND_ENUMVAL
:
3445 if (FIELD_ENUMVAL (*field1
) != FIELD_ENUMVAL (*field2
))
3448 case FIELD_LOC_KIND_PHYSADDR
:
3449 if (FIELD_STATIC_PHYSADDR (*field1
)
3450 != FIELD_STATIC_PHYSADDR (*field2
))
3453 case FIELD_LOC_KIND_PHYSNAME
:
3454 if (!compare_maybe_null_strings (FIELD_STATIC_PHYSNAME (*field1
),
3455 FIELD_STATIC_PHYSNAME (*field2
)))
3458 case FIELD_LOC_KIND_DWARF_BLOCK
:
3460 struct dwarf2_locexpr_baton
*block1
, *block2
;
3462 block1
= FIELD_DWARF_BLOCK (*field1
);
3463 block2
= FIELD_DWARF_BLOCK (*field2
);
3464 if (block1
->per_cu
!= block2
->per_cu
3465 || block1
->size
!= block2
->size
3466 || memcmp (block1
->data
, block2
->data
, block1
->size
) != 0)
3471 internal_error (__FILE__
, __LINE__
, _("Unsupported field kind "
3472 "%d by check_types_equal"),
3473 FIELD_LOC_KIND (*field1
));
3476 entry
.type1
= FIELD_TYPE (*field1
);
3477 entry
.type2
= FIELD_TYPE (*field2
);
3478 VEC_safe_push (type_equality_entry_d
, *worklist
, &entry
);
3482 if (TYPE_TARGET_TYPE (type1
) != NULL
)
3484 struct type_equality_entry entry
;
3486 if (TYPE_TARGET_TYPE (type2
) == NULL
)
3489 entry
.type1
= TYPE_TARGET_TYPE (type1
);
3490 entry
.type2
= TYPE_TARGET_TYPE (type2
);
3491 VEC_safe_push (type_equality_entry_d
, *worklist
, &entry
);
3493 else if (TYPE_TARGET_TYPE (type2
) != NULL
)
3499 /* Check types on a worklist for equality. Returns zero if any pair
3500 is not equal, non-zero if they are all considered equal. */
3503 check_types_worklist (VEC (type_equality_entry_d
) **worklist
,
3504 struct bcache
*cache
)
3506 while (!VEC_empty (type_equality_entry_d
, *worklist
))
3508 struct type_equality_entry entry
;
3511 entry
= *VEC_last (type_equality_entry_d
, *worklist
);
3512 VEC_pop (type_equality_entry_d
, *worklist
);
3514 /* If the type pair has already been visited, we know it is
3516 bcache_full (&entry
, sizeof (entry
), cache
, &added
);
3520 if (check_types_equal (entry
.type1
, entry
.type2
, worklist
) == 0)
3527 /* Return non-zero if types TYPE1 and TYPE2 are equal, as determined by a
3528 "deep comparison". Otherwise return zero. */
3531 types_deeply_equal (struct type
*type1
, struct type
*type2
)
3533 struct gdb_exception except
= exception_none
;
3535 struct bcache
*cache
;
3536 VEC (type_equality_entry_d
) *worklist
= NULL
;
3537 struct type_equality_entry entry
;
3539 gdb_assert (type1
!= NULL
&& type2
!= NULL
);
3541 /* Early exit for the simple case. */
3545 cache
= bcache_xmalloc (NULL
, NULL
);
3547 entry
.type1
= type1
;
3548 entry
.type2
= type2
;
3549 VEC_safe_push (type_equality_entry_d
, worklist
, &entry
);
3551 /* check_types_worklist calls several nested helper functions, some
3552 of which can raise a GDB exception, so we just check and rethrow
3553 here. If there is a GDB exception, a comparison is not capable
3554 (or trusted), so exit. */
3557 result
= check_types_worklist (&worklist
, cache
);
3559 CATCH (ex
, RETURN_MASK_ALL
)
3565 bcache_xfree (cache
);
3566 VEC_free (type_equality_entry_d
, worklist
);
3568 /* Rethrow if there was a problem. */
3569 if (except
.reason
< 0)
3570 throw_exception (except
);
3575 /* Allocated status of type TYPE. Return zero if type TYPE is allocated.
3576 Otherwise return one. */
3579 type_not_allocated (const struct type
*type
)
3581 struct dynamic_prop
*prop
= TYPE_ALLOCATED_PROP (type
);
3583 return (prop
&& TYPE_DYN_PROP_KIND (prop
) == PROP_CONST
3584 && !TYPE_DYN_PROP_ADDR (prop
));
3587 /* Associated status of type TYPE. Return zero if type TYPE is associated.
3588 Otherwise return one. */
3591 type_not_associated (const struct type
*type
)
3593 struct dynamic_prop
*prop
= TYPE_ASSOCIATED_PROP (type
);
3595 return (prop
&& TYPE_DYN_PROP_KIND (prop
) == PROP_CONST
3596 && !TYPE_DYN_PROP_ADDR (prop
));
3599 /* Compare one type (PARM) for compatibility with another (ARG).
3600 * PARM is intended to be the parameter type of a function; and
3601 * ARG is the supplied argument's type. This function tests if
3602 * the latter can be converted to the former.
3603 * VALUE is the argument's value or NULL if none (or called recursively)
3605 * Return 0 if they are identical types;
3606 * Otherwise, return an integer which corresponds to how compatible
3607 * PARM is to ARG. The higher the return value, the worse the match.
3608 * Generally the "bad" conversions are all uniformly assigned a 100. */
3611 rank_one_type (struct type
*parm
, struct type
*arg
, struct value
*value
)
3613 struct rank rank
= {0,0};
3615 /* Resolve typedefs */
3616 if (TYPE_CODE (parm
) == TYPE_CODE_TYPEDEF
)
3617 parm
= check_typedef (parm
);
3618 if (TYPE_CODE (arg
) == TYPE_CODE_TYPEDEF
)
3619 arg
= check_typedef (arg
);
3621 if (TYPE_IS_REFERENCE (parm
) && value
!= NULL
)
3623 if (VALUE_LVAL (value
) == not_lval
)
3625 /* Rvalues should preferably bind to rvalue references or const
3626 lvalue references. */
3627 if (TYPE_CODE (parm
) == TYPE_CODE_RVALUE_REF
)
3628 rank
.subrank
= REFERENCE_CONVERSION_RVALUE
;
3629 else if (TYPE_CONST (TYPE_TARGET_TYPE (parm
)))
3630 rank
.subrank
= REFERENCE_CONVERSION_CONST_LVALUE
;
3632 return INCOMPATIBLE_TYPE_BADNESS
;
3633 return sum_ranks (rank
, REFERENCE_CONVERSION_BADNESS
);
3637 /* Lvalues should prefer lvalue overloads. */
3638 if (TYPE_CODE (parm
) == TYPE_CODE_RVALUE_REF
)
3640 rank
.subrank
= REFERENCE_CONVERSION_RVALUE
;
3641 return sum_ranks (rank
, REFERENCE_CONVERSION_BADNESS
);
3646 if (types_equal (parm
, arg
))
3648 struct type
*t1
= parm
;
3649 struct type
*t2
= arg
;
3651 /* For pointers and references, compare target type. */
3652 if (TYPE_CODE (parm
) == TYPE_CODE_PTR
|| TYPE_IS_REFERENCE (parm
))
3654 t1
= TYPE_TARGET_TYPE (parm
);
3655 t2
= TYPE_TARGET_TYPE (arg
);
3658 /* Make sure they are CV equal, too. */
3659 if (TYPE_CONST (t1
) != TYPE_CONST (t2
))
3660 rank
.subrank
|= CV_CONVERSION_CONST
;
3661 if (TYPE_VOLATILE (t1
) != TYPE_VOLATILE (t2
))
3662 rank
.subrank
|= CV_CONVERSION_VOLATILE
;
3663 if (rank
.subrank
!= 0)
3664 return sum_ranks (CV_CONVERSION_BADNESS
, rank
);
3665 return EXACT_MATCH_BADNESS
;
3668 /* See through references, since we can almost make non-references
3671 if (TYPE_IS_REFERENCE (arg
))
3672 return (sum_ranks (rank_one_type (parm
, TYPE_TARGET_TYPE (arg
), NULL
),
3673 REFERENCE_CONVERSION_BADNESS
));
3674 if (TYPE_IS_REFERENCE (parm
))
3675 return (sum_ranks (rank_one_type (TYPE_TARGET_TYPE (parm
), arg
, NULL
),
3676 REFERENCE_CONVERSION_BADNESS
));
3678 /* Debugging only. */
3679 fprintf_filtered (gdb_stderr
,
3680 "------ Arg is %s [%d], parm is %s [%d]\n",
3681 TYPE_NAME (arg
), TYPE_CODE (arg
),
3682 TYPE_NAME (parm
), TYPE_CODE (parm
));
3684 /* x -> y means arg of type x being supplied for parameter of type y. */
3686 switch (TYPE_CODE (parm
))
3689 switch (TYPE_CODE (arg
))
3693 /* Allowed pointer conversions are:
3694 (a) pointer to void-pointer conversion. */
3695 if (TYPE_CODE (TYPE_TARGET_TYPE (parm
)) == TYPE_CODE_VOID
)
3696 return VOID_PTR_CONVERSION_BADNESS
;
3698 /* (b) pointer to ancestor-pointer conversion. */
3699 rank
.subrank
= distance_to_ancestor (TYPE_TARGET_TYPE (parm
),
3700 TYPE_TARGET_TYPE (arg
),
3702 if (rank
.subrank
>= 0)
3703 return sum_ranks (BASE_PTR_CONVERSION_BADNESS
, rank
);
3705 return INCOMPATIBLE_TYPE_BADNESS
;
3706 case TYPE_CODE_ARRAY
:
3708 struct type
*t1
= TYPE_TARGET_TYPE (parm
);
3709 struct type
*t2
= TYPE_TARGET_TYPE (arg
);
3711 if (types_equal (t1
, t2
))
3713 /* Make sure they are CV equal. */
3714 if (TYPE_CONST (t1
) != TYPE_CONST (t2
))
3715 rank
.subrank
|= CV_CONVERSION_CONST
;
3716 if (TYPE_VOLATILE (t1
) != TYPE_VOLATILE (t2
))
3717 rank
.subrank
|= CV_CONVERSION_VOLATILE
;
3718 if (rank
.subrank
!= 0)
3719 return sum_ranks (CV_CONVERSION_BADNESS
, rank
);
3720 return EXACT_MATCH_BADNESS
;
3722 return INCOMPATIBLE_TYPE_BADNESS
;
3724 case TYPE_CODE_FUNC
:
3725 return rank_one_type (TYPE_TARGET_TYPE (parm
), arg
, NULL
);
3727 if (value
!= NULL
&& TYPE_CODE (value_type (value
)) == TYPE_CODE_INT
)
3729 if (value_as_long (value
) == 0)
3731 /* Null pointer conversion: allow it to be cast to a pointer.
3732 [4.10.1 of C++ standard draft n3290] */
3733 return NULL_POINTER_CONVERSION_BADNESS
;
3737 /* If type checking is disabled, allow the conversion. */
3738 if (!strict_type_checking
)
3739 return NS_INTEGER_POINTER_CONVERSION_BADNESS
;
3743 case TYPE_CODE_ENUM
:
3744 case TYPE_CODE_FLAGS
:
3745 case TYPE_CODE_CHAR
:
3746 case TYPE_CODE_RANGE
:
3747 case TYPE_CODE_BOOL
:
3749 return INCOMPATIBLE_TYPE_BADNESS
;
3751 case TYPE_CODE_ARRAY
:
3752 switch (TYPE_CODE (arg
))
3755 case TYPE_CODE_ARRAY
:
3756 return rank_one_type (TYPE_TARGET_TYPE (parm
),
3757 TYPE_TARGET_TYPE (arg
), NULL
);
3759 return INCOMPATIBLE_TYPE_BADNESS
;
3761 case TYPE_CODE_FUNC
:
3762 switch (TYPE_CODE (arg
))
3764 case TYPE_CODE_PTR
: /* funcptr -> func */
3765 return rank_one_type (parm
, TYPE_TARGET_TYPE (arg
), NULL
);
3767 return INCOMPATIBLE_TYPE_BADNESS
;
3770 switch (TYPE_CODE (arg
))
3773 if (TYPE_LENGTH (arg
) == TYPE_LENGTH (parm
))
3775 /* Deal with signed, unsigned, and plain chars and
3776 signed and unsigned ints. */
3777 if (TYPE_NOSIGN (parm
))
3779 /* This case only for character types. */
3780 if (TYPE_NOSIGN (arg
))
3781 return EXACT_MATCH_BADNESS
; /* plain char -> plain char */
3782 else /* signed/unsigned char -> plain char */
3783 return INTEGER_CONVERSION_BADNESS
;
3785 else if (TYPE_UNSIGNED (parm
))
3787 if (TYPE_UNSIGNED (arg
))
3789 /* unsigned int -> unsigned int, or
3790 unsigned long -> unsigned long */
3791 if (integer_types_same_name_p (TYPE_NAME (parm
),
3793 return EXACT_MATCH_BADNESS
;
3794 else if (integer_types_same_name_p (TYPE_NAME (arg
),
3796 && integer_types_same_name_p (TYPE_NAME (parm
),
3798 /* unsigned int -> unsigned long */
3799 return INTEGER_PROMOTION_BADNESS
;
3801 /* unsigned long -> unsigned int */
3802 return INTEGER_CONVERSION_BADNESS
;
3806 if (integer_types_same_name_p (TYPE_NAME (arg
),
3808 && integer_types_same_name_p (TYPE_NAME (parm
),
3810 /* signed long -> unsigned int */
3811 return INTEGER_CONVERSION_BADNESS
;
3813 /* signed int/long -> unsigned int/long */
3814 return INTEGER_CONVERSION_BADNESS
;
3817 else if (!TYPE_NOSIGN (arg
) && !TYPE_UNSIGNED (arg
))
3819 if (integer_types_same_name_p (TYPE_NAME (parm
),
3821 return EXACT_MATCH_BADNESS
;
3822 else if (integer_types_same_name_p (TYPE_NAME (arg
),
3824 && integer_types_same_name_p (TYPE_NAME (parm
),
3826 return INTEGER_PROMOTION_BADNESS
;
3828 return INTEGER_CONVERSION_BADNESS
;
3831 return INTEGER_CONVERSION_BADNESS
;
3833 else if (TYPE_LENGTH (arg
) < TYPE_LENGTH (parm
))
3834 return INTEGER_PROMOTION_BADNESS
;
3836 return INTEGER_CONVERSION_BADNESS
;
3837 case TYPE_CODE_ENUM
:
3838 case TYPE_CODE_FLAGS
:
3839 case TYPE_CODE_CHAR
:
3840 case TYPE_CODE_RANGE
:
3841 case TYPE_CODE_BOOL
:
3842 if (TYPE_DECLARED_CLASS (arg
))
3843 return INCOMPATIBLE_TYPE_BADNESS
;
3844 return INTEGER_PROMOTION_BADNESS
;
3846 return INT_FLOAT_CONVERSION_BADNESS
;
3848 return NS_POINTER_CONVERSION_BADNESS
;
3850 return INCOMPATIBLE_TYPE_BADNESS
;
3853 case TYPE_CODE_ENUM
:
3854 switch (TYPE_CODE (arg
))
3857 case TYPE_CODE_CHAR
:
3858 case TYPE_CODE_RANGE
:
3859 case TYPE_CODE_BOOL
:
3860 case TYPE_CODE_ENUM
:
3861 if (TYPE_DECLARED_CLASS (parm
) || TYPE_DECLARED_CLASS (arg
))
3862 return INCOMPATIBLE_TYPE_BADNESS
;
3863 return INTEGER_CONVERSION_BADNESS
;
3865 return INT_FLOAT_CONVERSION_BADNESS
;
3867 return INCOMPATIBLE_TYPE_BADNESS
;
3870 case TYPE_CODE_CHAR
:
3871 switch (TYPE_CODE (arg
))
3873 case TYPE_CODE_RANGE
:
3874 case TYPE_CODE_BOOL
:
3875 case TYPE_CODE_ENUM
:
3876 if (TYPE_DECLARED_CLASS (arg
))
3877 return INCOMPATIBLE_TYPE_BADNESS
;
3878 return INTEGER_CONVERSION_BADNESS
;
3880 return INT_FLOAT_CONVERSION_BADNESS
;
3882 if (TYPE_LENGTH (arg
) > TYPE_LENGTH (parm
))
3883 return INTEGER_CONVERSION_BADNESS
;
3884 else if (TYPE_LENGTH (arg
) < TYPE_LENGTH (parm
))
3885 return INTEGER_PROMOTION_BADNESS
;
3886 /* >>> !! else fall through !! <<< */
3887 case TYPE_CODE_CHAR
:
3888 /* Deal with signed, unsigned, and plain chars for C++ and
3889 with int cases falling through from previous case. */
3890 if (TYPE_NOSIGN (parm
))
3892 if (TYPE_NOSIGN (arg
))
3893 return EXACT_MATCH_BADNESS
;
3895 return INTEGER_CONVERSION_BADNESS
;
3897 else if (TYPE_UNSIGNED (parm
))
3899 if (TYPE_UNSIGNED (arg
))
3900 return EXACT_MATCH_BADNESS
;
3902 return INTEGER_PROMOTION_BADNESS
;
3904 else if (!TYPE_NOSIGN (arg
) && !TYPE_UNSIGNED (arg
))
3905 return EXACT_MATCH_BADNESS
;
3907 return INTEGER_CONVERSION_BADNESS
;
3909 return INCOMPATIBLE_TYPE_BADNESS
;
3912 case TYPE_CODE_RANGE
:
3913 switch (TYPE_CODE (arg
))
3916 case TYPE_CODE_CHAR
:
3917 case TYPE_CODE_RANGE
:
3918 case TYPE_CODE_BOOL
:
3919 case TYPE_CODE_ENUM
:
3920 return INTEGER_CONVERSION_BADNESS
;
3922 return INT_FLOAT_CONVERSION_BADNESS
;
3924 return INCOMPATIBLE_TYPE_BADNESS
;
3927 case TYPE_CODE_BOOL
:
3928 switch (TYPE_CODE (arg
))
3930 /* n3290 draft, section 4.12.1 (conv.bool):
3932 "A prvalue of arithmetic, unscoped enumeration, pointer, or
3933 pointer to member type can be converted to a prvalue of type
3934 bool. A zero value, null pointer value, or null member pointer
3935 value is converted to false; any other value is converted to
3936 true. A prvalue of type std::nullptr_t can be converted to a
3937 prvalue of type bool; the resulting value is false." */
3939 case TYPE_CODE_CHAR
:
3940 case TYPE_CODE_ENUM
:
3942 case TYPE_CODE_MEMBERPTR
:
3944 return BOOL_CONVERSION_BADNESS
;
3945 case TYPE_CODE_RANGE
:
3946 return INCOMPATIBLE_TYPE_BADNESS
;
3947 case TYPE_CODE_BOOL
:
3948 return EXACT_MATCH_BADNESS
;
3950 return INCOMPATIBLE_TYPE_BADNESS
;
3954 switch (TYPE_CODE (arg
))
3957 if (TYPE_LENGTH (arg
) < TYPE_LENGTH (parm
))
3958 return FLOAT_PROMOTION_BADNESS
;
3959 else if (TYPE_LENGTH (arg
) == TYPE_LENGTH (parm
))
3960 return EXACT_MATCH_BADNESS
;
3962 return FLOAT_CONVERSION_BADNESS
;
3964 case TYPE_CODE_BOOL
:
3965 case TYPE_CODE_ENUM
:
3966 case TYPE_CODE_RANGE
:
3967 case TYPE_CODE_CHAR
:
3968 return INT_FLOAT_CONVERSION_BADNESS
;
3970 return INCOMPATIBLE_TYPE_BADNESS
;
3973 case TYPE_CODE_COMPLEX
:
3974 switch (TYPE_CODE (arg
))
3975 { /* Strictly not needed for C++, but... */
3977 return FLOAT_PROMOTION_BADNESS
;
3978 case TYPE_CODE_COMPLEX
:
3979 return EXACT_MATCH_BADNESS
;
3981 return INCOMPATIBLE_TYPE_BADNESS
;
3984 case TYPE_CODE_STRUCT
:
3985 switch (TYPE_CODE (arg
))
3987 case TYPE_CODE_STRUCT
:
3988 /* Check for derivation */
3989 rank
.subrank
= distance_to_ancestor (parm
, arg
, 0);
3990 if (rank
.subrank
>= 0)
3991 return sum_ranks (BASE_CONVERSION_BADNESS
, rank
);
3992 /* else fall through */
3994 return INCOMPATIBLE_TYPE_BADNESS
;
3997 case TYPE_CODE_UNION
:
3998 switch (TYPE_CODE (arg
))
4000 case TYPE_CODE_UNION
:
4002 return INCOMPATIBLE_TYPE_BADNESS
;
4005 case TYPE_CODE_MEMBERPTR
:
4006 switch (TYPE_CODE (arg
))
4009 return INCOMPATIBLE_TYPE_BADNESS
;
4012 case TYPE_CODE_METHOD
:
4013 switch (TYPE_CODE (arg
))
4017 return INCOMPATIBLE_TYPE_BADNESS
;
4021 switch (TYPE_CODE (arg
))
4025 return INCOMPATIBLE_TYPE_BADNESS
;
4030 switch (TYPE_CODE (arg
))
4034 return rank_one_type (TYPE_FIELD_TYPE (parm
, 0),
4035 TYPE_FIELD_TYPE (arg
, 0), NULL
);
4037 return INCOMPATIBLE_TYPE_BADNESS
;
4040 case TYPE_CODE_VOID
:
4042 return INCOMPATIBLE_TYPE_BADNESS
;
4043 } /* switch (TYPE_CODE (arg)) */
4046 /* End of functions for overload resolution. */
4048 /* Routines to pretty-print types. */
4051 print_bit_vector (B_TYPE
*bits
, int nbits
)
4055 for (bitno
= 0; bitno
< nbits
; bitno
++)
4057 if ((bitno
% 8) == 0)
4059 puts_filtered (" ");
4061 if (B_TST (bits
, bitno
))
4062 printf_filtered (("1"));
4064 printf_filtered (("0"));
4068 /* Note the first arg should be the "this" pointer, we may not want to
4069 include it since we may get into a infinitely recursive
4073 print_args (struct field
*args
, int nargs
, int spaces
)
4079 for (i
= 0; i
< nargs
; i
++)
4081 printfi_filtered (spaces
, "[%d] name '%s'\n", i
,
4082 args
[i
].name
!= NULL
? args
[i
].name
: "<NULL>");
4083 recursive_dump_type (args
[i
].type
, spaces
+ 2);
4089 field_is_static (struct field
*f
)
4091 /* "static" fields are the fields whose location is not relative
4092 to the address of the enclosing struct. It would be nice to
4093 have a dedicated flag that would be set for static fields when
4094 the type is being created. But in practice, checking the field
4095 loc_kind should give us an accurate answer. */
4096 return (FIELD_LOC_KIND (*f
) == FIELD_LOC_KIND_PHYSNAME
4097 || FIELD_LOC_KIND (*f
) == FIELD_LOC_KIND_PHYSADDR
);
4101 dump_fn_fieldlists (struct type
*type
, int spaces
)
4107 printfi_filtered (spaces
, "fn_fieldlists ");
4108 gdb_print_host_address (TYPE_FN_FIELDLISTS (type
), gdb_stdout
);
4109 printf_filtered ("\n");
4110 for (method_idx
= 0; method_idx
< TYPE_NFN_FIELDS (type
); method_idx
++)
4112 f
= TYPE_FN_FIELDLIST1 (type
, method_idx
);
4113 printfi_filtered (spaces
+ 2, "[%d] name '%s' (",
4115 TYPE_FN_FIELDLIST_NAME (type
, method_idx
));
4116 gdb_print_host_address (TYPE_FN_FIELDLIST_NAME (type
, method_idx
),
4118 printf_filtered (_(") length %d\n"),
4119 TYPE_FN_FIELDLIST_LENGTH (type
, method_idx
));
4120 for (overload_idx
= 0;
4121 overload_idx
< TYPE_FN_FIELDLIST_LENGTH (type
, method_idx
);
4124 printfi_filtered (spaces
+ 4, "[%d] physname '%s' (",
4126 TYPE_FN_FIELD_PHYSNAME (f
, overload_idx
));
4127 gdb_print_host_address (TYPE_FN_FIELD_PHYSNAME (f
, overload_idx
),
4129 printf_filtered (")\n");
4130 printfi_filtered (spaces
+ 8, "type ");
4131 gdb_print_host_address (TYPE_FN_FIELD_TYPE (f
, overload_idx
),
4133 printf_filtered ("\n");
4135 recursive_dump_type (TYPE_FN_FIELD_TYPE (f
, overload_idx
),
4138 printfi_filtered (spaces
+ 8, "args ");
4139 gdb_print_host_address (TYPE_FN_FIELD_ARGS (f
, overload_idx
),
4141 printf_filtered ("\n");
4142 print_args (TYPE_FN_FIELD_ARGS (f
, overload_idx
),
4143 TYPE_NFIELDS (TYPE_FN_FIELD_TYPE (f
, overload_idx
)),
4145 printfi_filtered (spaces
+ 8, "fcontext ");
4146 gdb_print_host_address (TYPE_FN_FIELD_FCONTEXT (f
, overload_idx
),
4148 printf_filtered ("\n");
4150 printfi_filtered (spaces
+ 8, "is_const %d\n",
4151 TYPE_FN_FIELD_CONST (f
, overload_idx
));
4152 printfi_filtered (spaces
+ 8, "is_volatile %d\n",
4153 TYPE_FN_FIELD_VOLATILE (f
, overload_idx
));
4154 printfi_filtered (spaces
+ 8, "is_private %d\n",
4155 TYPE_FN_FIELD_PRIVATE (f
, overload_idx
));
4156 printfi_filtered (spaces
+ 8, "is_protected %d\n",
4157 TYPE_FN_FIELD_PROTECTED (f
, overload_idx
));
4158 printfi_filtered (spaces
+ 8, "is_stub %d\n",
4159 TYPE_FN_FIELD_STUB (f
, overload_idx
));
4160 printfi_filtered (spaces
+ 8, "voffset %u\n",
4161 TYPE_FN_FIELD_VOFFSET (f
, overload_idx
));
4167 print_cplus_stuff (struct type
*type
, int spaces
)
4169 printfi_filtered (spaces
, "vptr_fieldno %d\n", TYPE_VPTR_FIELDNO (type
));
4170 printfi_filtered (spaces
, "vptr_basetype ");
4171 gdb_print_host_address (TYPE_VPTR_BASETYPE (type
), gdb_stdout
);
4172 puts_filtered ("\n");
4173 if (TYPE_VPTR_BASETYPE (type
) != NULL
)
4174 recursive_dump_type (TYPE_VPTR_BASETYPE (type
), spaces
+ 2);
4176 printfi_filtered (spaces
, "n_baseclasses %d\n",
4177 TYPE_N_BASECLASSES (type
));
4178 printfi_filtered (spaces
, "nfn_fields %d\n",
4179 TYPE_NFN_FIELDS (type
));
4180 if (TYPE_N_BASECLASSES (type
) > 0)
4182 printfi_filtered (spaces
, "virtual_field_bits (%d bits at *",
4183 TYPE_N_BASECLASSES (type
));
4184 gdb_print_host_address (TYPE_FIELD_VIRTUAL_BITS (type
),
4186 printf_filtered (")");
4188 print_bit_vector (TYPE_FIELD_VIRTUAL_BITS (type
),
4189 TYPE_N_BASECLASSES (type
));
4190 puts_filtered ("\n");
4192 if (TYPE_NFIELDS (type
) > 0)
4194 if (TYPE_FIELD_PRIVATE_BITS (type
) != NULL
)
4196 printfi_filtered (spaces
,
4197 "private_field_bits (%d bits at *",
4198 TYPE_NFIELDS (type
));
4199 gdb_print_host_address (TYPE_FIELD_PRIVATE_BITS (type
),
4201 printf_filtered (")");
4202 print_bit_vector (TYPE_FIELD_PRIVATE_BITS (type
),
4203 TYPE_NFIELDS (type
));
4204 puts_filtered ("\n");
4206 if (TYPE_FIELD_PROTECTED_BITS (type
) != NULL
)
4208 printfi_filtered (spaces
,
4209 "protected_field_bits (%d bits at *",
4210 TYPE_NFIELDS (type
));
4211 gdb_print_host_address (TYPE_FIELD_PROTECTED_BITS (type
),
4213 printf_filtered (")");
4214 print_bit_vector (TYPE_FIELD_PROTECTED_BITS (type
),
4215 TYPE_NFIELDS (type
));
4216 puts_filtered ("\n");
4219 if (TYPE_NFN_FIELDS (type
) > 0)
4221 dump_fn_fieldlists (type
, spaces
);
4225 /* Print the contents of the TYPE's type_specific union, assuming that
4226 its type-specific kind is TYPE_SPECIFIC_GNAT_STUFF. */
4229 print_gnat_stuff (struct type
*type
, int spaces
)
4231 struct type
*descriptive_type
= TYPE_DESCRIPTIVE_TYPE (type
);
4233 if (descriptive_type
== NULL
)
4234 printfi_filtered (spaces
+ 2, "no descriptive type\n");
4237 printfi_filtered (spaces
+ 2, "descriptive type\n");
4238 recursive_dump_type (descriptive_type
, spaces
+ 4);
4242 static struct obstack dont_print_type_obstack
;
4245 recursive_dump_type (struct type
*type
, int spaces
)
4250 obstack_begin (&dont_print_type_obstack
, 0);
4252 if (TYPE_NFIELDS (type
) > 0
4253 || (HAVE_CPLUS_STRUCT (type
) && TYPE_NFN_FIELDS (type
) > 0))
4255 struct type
**first_dont_print
4256 = (struct type
**) obstack_base (&dont_print_type_obstack
);
4258 int i
= (struct type
**)
4259 obstack_next_free (&dont_print_type_obstack
) - first_dont_print
;
4263 if (type
== first_dont_print
[i
])
4265 printfi_filtered (spaces
, "type node ");
4266 gdb_print_host_address (type
, gdb_stdout
);
4267 printf_filtered (_(" <same as already seen type>\n"));
4272 obstack_ptr_grow (&dont_print_type_obstack
, type
);
4275 printfi_filtered (spaces
, "type node ");
4276 gdb_print_host_address (type
, gdb_stdout
);
4277 printf_filtered ("\n");
4278 printfi_filtered (spaces
, "name '%s' (",
4279 TYPE_NAME (type
) ? TYPE_NAME (type
) : "<NULL>");
4280 gdb_print_host_address (TYPE_NAME (type
), gdb_stdout
);
4281 printf_filtered (")\n");
4282 printfi_filtered (spaces
, "tagname '%s' (",
4283 TYPE_TAG_NAME (type
) ? TYPE_TAG_NAME (type
) : "<NULL>");
4284 gdb_print_host_address (TYPE_TAG_NAME (type
), gdb_stdout
);
4285 printf_filtered (")\n");
4286 printfi_filtered (spaces
, "code 0x%x ", TYPE_CODE (type
));
4287 switch (TYPE_CODE (type
))
4289 case TYPE_CODE_UNDEF
:
4290 printf_filtered ("(TYPE_CODE_UNDEF)");
4293 printf_filtered ("(TYPE_CODE_PTR)");
4295 case TYPE_CODE_ARRAY
:
4296 printf_filtered ("(TYPE_CODE_ARRAY)");
4298 case TYPE_CODE_STRUCT
:
4299 printf_filtered ("(TYPE_CODE_STRUCT)");
4301 case TYPE_CODE_UNION
:
4302 printf_filtered ("(TYPE_CODE_UNION)");
4304 case TYPE_CODE_ENUM
:
4305 printf_filtered ("(TYPE_CODE_ENUM)");
4307 case TYPE_CODE_FLAGS
:
4308 printf_filtered ("(TYPE_CODE_FLAGS)");
4310 case TYPE_CODE_FUNC
:
4311 printf_filtered ("(TYPE_CODE_FUNC)");
4314 printf_filtered ("(TYPE_CODE_INT)");
4317 printf_filtered ("(TYPE_CODE_FLT)");
4319 case TYPE_CODE_VOID
:
4320 printf_filtered ("(TYPE_CODE_VOID)");
4323 printf_filtered ("(TYPE_CODE_SET)");
4325 case TYPE_CODE_RANGE
:
4326 printf_filtered ("(TYPE_CODE_RANGE)");
4328 case TYPE_CODE_STRING
:
4329 printf_filtered ("(TYPE_CODE_STRING)");
4331 case TYPE_CODE_ERROR
:
4332 printf_filtered ("(TYPE_CODE_ERROR)");
4334 case TYPE_CODE_MEMBERPTR
:
4335 printf_filtered ("(TYPE_CODE_MEMBERPTR)");
4337 case TYPE_CODE_METHODPTR
:
4338 printf_filtered ("(TYPE_CODE_METHODPTR)");
4340 case TYPE_CODE_METHOD
:
4341 printf_filtered ("(TYPE_CODE_METHOD)");
4344 printf_filtered ("(TYPE_CODE_REF)");
4346 case TYPE_CODE_CHAR
:
4347 printf_filtered ("(TYPE_CODE_CHAR)");
4349 case TYPE_CODE_BOOL
:
4350 printf_filtered ("(TYPE_CODE_BOOL)");
4352 case TYPE_CODE_COMPLEX
:
4353 printf_filtered ("(TYPE_CODE_COMPLEX)");
4355 case TYPE_CODE_TYPEDEF
:
4356 printf_filtered ("(TYPE_CODE_TYPEDEF)");
4358 case TYPE_CODE_NAMESPACE
:
4359 printf_filtered ("(TYPE_CODE_NAMESPACE)");
4362 printf_filtered ("(UNKNOWN TYPE CODE)");
4365 puts_filtered ("\n");
4366 printfi_filtered (spaces
, "length %d\n", TYPE_LENGTH (type
));
4367 if (TYPE_OBJFILE_OWNED (type
))
4369 printfi_filtered (spaces
, "objfile ");
4370 gdb_print_host_address (TYPE_OWNER (type
).objfile
, gdb_stdout
);
4374 printfi_filtered (spaces
, "gdbarch ");
4375 gdb_print_host_address (TYPE_OWNER (type
).gdbarch
, gdb_stdout
);
4377 printf_filtered ("\n");
4378 printfi_filtered (spaces
, "target_type ");
4379 gdb_print_host_address (TYPE_TARGET_TYPE (type
), gdb_stdout
);
4380 printf_filtered ("\n");
4381 if (TYPE_TARGET_TYPE (type
) != NULL
)
4383 recursive_dump_type (TYPE_TARGET_TYPE (type
), spaces
+ 2);
4385 printfi_filtered (spaces
, "pointer_type ");
4386 gdb_print_host_address (TYPE_POINTER_TYPE (type
), gdb_stdout
);
4387 printf_filtered ("\n");
4388 printfi_filtered (spaces
, "reference_type ");
4389 gdb_print_host_address (TYPE_REFERENCE_TYPE (type
), gdb_stdout
);
4390 printf_filtered ("\n");
4391 printfi_filtered (spaces
, "type_chain ");
4392 gdb_print_host_address (TYPE_CHAIN (type
), gdb_stdout
);
4393 printf_filtered ("\n");
4394 printfi_filtered (spaces
, "instance_flags 0x%x",
4395 TYPE_INSTANCE_FLAGS (type
));
4396 if (TYPE_CONST (type
))
4398 puts_filtered (" TYPE_CONST");
4400 if (TYPE_VOLATILE (type
))
4402 puts_filtered (" TYPE_VOLATILE");
4404 if (TYPE_CODE_SPACE (type
))
4406 puts_filtered (" TYPE_CODE_SPACE");
4408 if (TYPE_DATA_SPACE (type
))
4410 puts_filtered (" TYPE_DATA_SPACE");
4412 if (TYPE_ADDRESS_CLASS_1 (type
))
4414 puts_filtered (" TYPE_ADDRESS_CLASS_1");
4416 if (TYPE_ADDRESS_CLASS_2 (type
))
4418 puts_filtered (" TYPE_ADDRESS_CLASS_2");
4420 if (TYPE_RESTRICT (type
))
4422 puts_filtered (" TYPE_RESTRICT");
4424 if (TYPE_ATOMIC (type
))
4426 puts_filtered (" TYPE_ATOMIC");
4428 puts_filtered ("\n");
4430 printfi_filtered (spaces
, "flags");
4431 if (TYPE_UNSIGNED (type
))
4433 puts_filtered (" TYPE_UNSIGNED");
4435 if (TYPE_NOSIGN (type
))
4437 puts_filtered (" TYPE_NOSIGN");
4439 if (TYPE_STUB (type
))
4441 puts_filtered (" TYPE_STUB");
4443 if (TYPE_TARGET_STUB (type
))
4445 puts_filtered (" TYPE_TARGET_STUB");
4447 if (TYPE_PROTOTYPED (type
))
4449 puts_filtered (" TYPE_PROTOTYPED");
4451 if (TYPE_INCOMPLETE (type
))
4453 puts_filtered (" TYPE_INCOMPLETE");
4455 if (TYPE_VARARGS (type
))
4457 puts_filtered (" TYPE_VARARGS");
4459 /* This is used for things like AltiVec registers on ppc. Gcc emits
4460 an attribute for the array type, which tells whether or not we
4461 have a vector, instead of a regular array. */
4462 if (TYPE_VECTOR (type
))
4464 puts_filtered (" TYPE_VECTOR");
4466 if (TYPE_FIXED_INSTANCE (type
))
4468 puts_filtered (" TYPE_FIXED_INSTANCE");
4470 if (TYPE_STUB_SUPPORTED (type
))
4472 puts_filtered (" TYPE_STUB_SUPPORTED");
4474 if (TYPE_NOTTEXT (type
))
4476 puts_filtered (" TYPE_NOTTEXT");
4478 puts_filtered ("\n");
4479 printfi_filtered (spaces
, "nfields %d ", TYPE_NFIELDS (type
));
4480 gdb_print_host_address (TYPE_FIELDS (type
), gdb_stdout
);
4481 puts_filtered ("\n");
4482 for (idx
= 0; idx
< TYPE_NFIELDS (type
); idx
++)
4484 if (TYPE_CODE (type
) == TYPE_CODE_ENUM
)
4485 printfi_filtered (spaces
+ 2,
4486 "[%d] enumval %s type ",
4487 idx
, plongest (TYPE_FIELD_ENUMVAL (type
, idx
)));
4489 printfi_filtered (spaces
+ 2,
4490 "[%d] bitpos %s bitsize %d type ",
4491 idx
, plongest (TYPE_FIELD_BITPOS (type
, idx
)),
4492 TYPE_FIELD_BITSIZE (type
, idx
));
4493 gdb_print_host_address (TYPE_FIELD_TYPE (type
, idx
), gdb_stdout
);
4494 printf_filtered (" name '%s' (",
4495 TYPE_FIELD_NAME (type
, idx
) != NULL
4496 ? TYPE_FIELD_NAME (type
, idx
)
4498 gdb_print_host_address (TYPE_FIELD_NAME (type
, idx
), gdb_stdout
);
4499 printf_filtered (")\n");
4500 if (TYPE_FIELD_TYPE (type
, idx
) != NULL
)
4502 recursive_dump_type (TYPE_FIELD_TYPE (type
, idx
), spaces
+ 4);
4505 if (TYPE_CODE (type
) == TYPE_CODE_RANGE
)
4507 printfi_filtered (spaces
, "low %s%s high %s%s\n",
4508 plongest (TYPE_LOW_BOUND (type
)),
4509 TYPE_LOW_BOUND_UNDEFINED (type
) ? " (undefined)" : "",
4510 plongest (TYPE_HIGH_BOUND (type
)),
4511 TYPE_HIGH_BOUND_UNDEFINED (type
)
4512 ? " (undefined)" : "");
4515 switch (TYPE_SPECIFIC_FIELD (type
))
4517 case TYPE_SPECIFIC_CPLUS_STUFF
:
4518 printfi_filtered (spaces
, "cplus_stuff ");
4519 gdb_print_host_address (TYPE_CPLUS_SPECIFIC (type
),
4521 puts_filtered ("\n");
4522 print_cplus_stuff (type
, spaces
);
4525 case TYPE_SPECIFIC_GNAT_STUFF
:
4526 printfi_filtered (spaces
, "gnat_stuff ");
4527 gdb_print_host_address (TYPE_GNAT_SPECIFIC (type
), gdb_stdout
);
4528 puts_filtered ("\n");
4529 print_gnat_stuff (type
, spaces
);
4532 case TYPE_SPECIFIC_FLOATFORMAT
:
4533 printfi_filtered (spaces
, "floatformat ");
4534 if (TYPE_FLOATFORMAT (type
) == NULL
)
4535 puts_filtered ("(null)");
4538 puts_filtered ("{ ");
4539 if (TYPE_FLOATFORMAT (type
)[0] == NULL
4540 || TYPE_FLOATFORMAT (type
)[0]->name
== NULL
)
4541 puts_filtered ("(null)");
4543 puts_filtered (TYPE_FLOATFORMAT (type
)[0]->name
);
4545 puts_filtered (", ");
4546 if (TYPE_FLOATFORMAT (type
)[1] == NULL
4547 || TYPE_FLOATFORMAT (type
)[1]->name
== NULL
)
4548 puts_filtered ("(null)");
4550 puts_filtered (TYPE_FLOATFORMAT (type
)[1]->name
);
4552 puts_filtered (" }");
4554 puts_filtered ("\n");
4557 case TYPE_SPECIFIC_FUNC
:
4558 printfi_filtered (spaces
, "calling_convention %d\n",
4559 TYPE_CALLING_CONVENTION (type
));
4560 /* tail_call_list is not printed. */
4563 case TYPE_SPECIFIC_SELF_TYPE
:
4564 printfi_filtered (spaces
, "self_type ");
4565 gdb_print_host_address (TYPE_SELF_TYPE (type
), gdb_stdout
);
4566 puts_filtered ("\n");
4571 obstack_free (&dont_print_type_obstack
, NULL
);
4574 /* Trivial helpers for the libiberty hash table, for mapping one
4579 struct type
*old
, *newobj
;
4583 type_pair_hash (const void *item
)
4585 const struct type_pair
*pair
= (const struct type_pair
*) item
;
4587 return htab_hash_pointer (pair
->old
);
4591 type_pair_eq (const void *item_lhs
, const void *item_rhs
)
4593 const struct type_pair
*lhs
= (const struct type_pair
*) item_lhs
;
4594 const struct type_pair
*rhs
= (const struct type_pair
*) item_rhs
;
4596 return lhs
->old
== rhs
->old
;
4599 /* Allocate the hash table used by copy_type_recursive to walk
4600 types without duplicates. We use OBJFILE's obstack, because
4601 OBJFILE is about to be deleted. */
4604 create_copied_types_hash (struct objfile
*objfile
)
4606 return htab_create_alloc_ex (1, type_pair_hash
, type_pair_eq
,
4607 NULL
, &objfile
->objfile_obstack
,
4608 hashtab_obstack_allocate
,
4609 dummy_obstack_deallocate
);
4612 /* Recursively copy (deep copy) a dynamic attribute list of a type. */
4614 static struct dynamic_prop_list
*
4615 copy_dynamic_prop_list (struct obstack
*objfile_obstack
,
4616 struct dynamic_prop_list
*list
)
4618 struct dynamic_prop_list
*copy
= list
;
4619 struct dynamic_prop_list
**node_ptr
= ©
;
4621 while (*node_ptr
!= NULL
)
4623 struct dynamic_prop_list
*node_copy
;
4625 node_copy
= ((struct dynamic_prop_list
*)
4626 obstack_copy (objfile_obstack
, *node_ptr
,
4627 sizeof (struct dynamic_prop_list
)));
4628 node_copy
->prop
= (*node_ptr
)->prop
;
4629 *node_ptr
= node_copy
;
4631 node_ptr
= &node_copy
->next
;
4637 /* Recursively copy (deep copy) TYPE, if it is associated with
4638 OBJFILE. Return a new type owned by the gdbarch associated with the type, a
4639 saved type if we have already visited TYPE (using COPIED_TYPES), or TYPE if
4640 it is not associated with OBJFILE. */
4643 copy_type_recursive (struct objfile
*objfile
,
4645 htab_t copied_types
)
4647 struct type_pair
*stored
, pair
;
4649 struct type
*new_type
;
4651 if (! TYPE_OBJFILE_OWNED (type
))
4654 /* This type shouldn't be pointing to any types in other objfiles;
4655 if it did, the type might disappear unexpectedly. */
4656 gdb_assert (TYPE_OBJFILE (type
) == objfile
);
4659 slot
= htab_find_slot (copied_types
, &pair
, INSERT
);
4661 return ((struct type_pair
*) *slot
)->newobj
;
4663 new_type
= alloc_type_arch (get_type_arch (type
));
4665 /* We must add the new type to the hash table immediately, in case
4666 we encounter this type again during a recursive call below. */
4667 stored
= XOBNEW (&objfile
->objfile_obstack
, struct type_pair
);
4669 stored
->newobj
= new_type
;
4672 /* Copy the common fields of types. For the main type, we simply
4673 copy the entire thing and then update specific fields as needed. */
4674 *TYPE_MAIN_TYPE (new_type
) = *TYPE_MAIN_TYPE (type
);
4675 TYPE_OBJFILE_OWNED (new_type
) = 0;
4676 TYPE_OWNER (new_type
).gdbarch
= get_type_arch (type
);
4678 if (TYPE_NAME (type
))
4679 TYPE_NAME (new_type
) = xstrdup (TYPE_NAME (type
));
4680 if (TYPE_TAG_NAME (type
))
4681 TYPE_TAG_NAME (new_type
) = xstrdup (TYPE_TAG_NAME (type
));
4683 TYPE_INSTANCE_FLAGS (new_type
) = TYPE_INSTANCE_FLAGS (type
);
4684 TYPE_LENGTH (new_type
) = TYPE_LENGTH (type
);
4686 /* Copy the fields. */
4687 if (TYPE_NFIELDS (type
))
4691 nfields
= TYPE_NFIELDS (type
);
4692 TYPE_FIELDS (new_type
) = XCNEWVEC (struct field
, nfields
);
4693 for (i
= 0; i
< nfields
; i
++)
4695 TYPE_FIELD_ARTIFICIAL (new_type
, i
) =
4696 TYPE_FIELD_ARTIFICIAL (type
, i
);
4697 TYPE_FIELD_BITSIZE (new_type
, i
) = TYPE_FIELD_BITSIZE (type
, i
);
4698 if (TYPE_FIELD_TYPE (type
, i
))
4699 TYPE_FIELD_TYPE (new_type
, i
)
4700 = copy_type_recursive (objfile
, TYPE_FIELD_TYPE (type
, i
),
4702 if (TYPE_FIELD_NAME (type
, i
))
4703 TYPE_FIELD_NAME (new_type
, i
) =
4704 xstrdup (TYPE_FIELD_NAME (type
, i
));
4705 switch (TYPE_FIELD_LOC_KIND (type
, i
))
4707 case FIELD_LOC_KIND_BITPOS
:
4708 SET_FIELD_BITPOS (TYPE_FIELD (new_type
, i
),
4709 TYPE_FIELD_BITPOS (type
, i
));
4711 case FIELD_LOC_KIND_ENUMVAL
:
4712 SET_FIELD_ENUMVAL (TYPE_FIELD (new_type
, i
),
4713 TYPE_FIELD_ENUMVAL (type
, i
));
4715 case FIELD_LOC_KIND_PHYSADDR
:
4716 SET_FIELD_PHYSADDR (TYPE_FIELD (new_type
, i
),
4717 TYPE_FIELD_STATIC_PHYSADDR (type
, i
));
4719 case FIELD_LOC_KIND_PHYSNAME
:
4720 SET_FIELD_PHYSNAME (TYPE_FIELD (new_type
, i
),
4721 xstrdup (TYPE_FIELD_STATIC_PHYSNAME (type
,
4725 internal_error (__FILE__
, __LINE__
,
4726 _("Unexpected type field location kind: %d"),
4727 TYPE_FIELD_LOC_KIND (type
, i
));
4732 /* For range types, copy the bounds information. */
4733 if (TYPE_CODE (type
) == TYPE_CODE_RANGE
)
4735 TYPE_RANGE_DATA (new_type
) = XNEW (struct range_bounds
);
4736 *TYPE_RANGE_DATA (new_type
) = *TYPE_RANGE_DATA (type
);
4739 if (TYPE_DYN_PROP_LIST (type
) != NULL
)
4740 TYPE_DYN_PROP_LIST (new_type
)
4741 = copy_dynamic_prop_list (&objfile
->objfile_obstack
,
4742 TYPE_DYN_PROP_LIST (type
));
4745 /* Copy pointers to other types. */
4746 if (TYPE_TARGET_TYPE (type
))
4747 TYPE_TARGET_TYPE (new_type
) =
4748 copy_type_recursive (objfile
,
4749 TYPE_TARGET_TYPE (type
),
4752 /* Maybe copy the type_specific bits.
4754 NOTE drow/2005-12-09: We do not copy the C++-specific bits like
4755 base classes and methods. There's no fundamental reason why we
4756 can't, but at the moment it is not needed. */
4758 switch (TYPE_SPECIFIC_FIELD (type
))
4760 case TYPE_SPECIFIC_NONE
:
4762 case TYPE_SPECIFIC_FUNC
:
4763 INIT_FUNC_SPECIFIC (new_type
);
4764 TYPE_CALLING_CONVENTION (new_type
) = TYPE_CALLING_CONVENTION (type
);
4765 TYPE_NO_RETURN (new_type
) = TYPE_NO_RETURN (type
);
4766 TYPE_TAIL_CALL_LIST (new_type
) = NULL
;
4768 case TYPE_SPECIFIC_FLOATFORMAT
:
4769 TYPE_FLOATFORMAT (new_type
) = TYPE_FLOATFORMAT (type
);
4771 case TYPE_SPECIFIC_CPLUS_STUFF
:
4772 INIT_CPLUS_SPECIFIC (new_type
);
4774 case TYPE_SPECIFIC_GNAT_STUFF
:
4775 INIT_GNAT_SPECIFIC (new_type
);
4777 case TYPE_SPECIFIC_SELF_TYPE
:
4778 set_type_self_type (new_type
,
4779 copy_type_recursive (objfile
, TYPE_SELF_TYPE (type
),
4783 gdb_assert_not_reached ("bad type_specific_kind");
4789 /* Make a copy of the given TYPE, except that the pointer & reference
4790 types are not preserved.
4792 This function assumes that the given type has an associated objfile.
4793 This objfile is used to allocate the new type. */
4796 copy_type (const struct type
*type
)
4798 struct type
*new_type
;
4800 gdb_assert (TYPE_OBJFILE_OWNED (type
));
4802 new_type
= alloc_type_copy (type
);
4803 TYPE_INSTANCE_FLAGS (new_type
) = TYPE_INSTANCE_FLAGS (type
);
4804 TYPE_LENGTH (new_type
) = TYPE_LENGTH (type
);
4805 memcpy (TYPE_MAIN_TYPE (new_type
), TYPE_MAIN_TYPE (type
),
4806 sizeof (struct main_type
));
4807 if (TYPE_DYN_PROP_LIST (type
) != NULL
)
4808 TYPE_DYN_PROP_LIST (new_type
)
4809 = copy_dynamic_prop_list (&TYPE_OBJFILE (type
) -> objfile_obstack
,
4810 TYPE_DYN_PROP_LIST (type
));
4815 /* Helper functions to initialize architecture-specific types. */
4817 /* Allocate a type structure associated with GDBARCH and set its
4818 CODE, LENGTH, and NAME fields. */
4821 arch_type (struct gdbarch
*gdbarch
,
4822 enum type_code code
, int length
, const char *name
)
4826 type
= alloc_type_arch (gdbarch
);
4827 set_type_code (type
, code
);
4828 TYPE_LENGTH (type
) = length
;
4831 TYPE_NAME (type
) = gdbarch_obstack_strdup (gdbarch
, name
);
4836 /* Allocate a TYPE_CODE_INT type structure associated with GDBARCH.
4837 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
4838 the type's TYPE_UNSIGNED flag. NAME is the type name. */
4841 arch_integer_type (struct gdbarch
*gdbarch
,
4842 int bit
, int unsigned_p
, const char *name
)
4846 t
= arch_type (gdbarch
, TYPE_CODE_INT
, bit
/ TARGET_CHAR_BIT
, name
);
4848 TYPE_UNSIGNED (t
) = 1;
4853 /* Allocate a TYPE_CODE_CHAR type structure associated with GDBARCH.
4854 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
4855 the type's TYPE_UNSIGNED flag. NAME is the type name. */
4858 arch_character_type (struct gdbarch
*gdbarch
,
4859 int bit
, int unsigned_p
, const char *name
)
4863 t
= arch_type (gdbarch
, TYPE_CODE_CHAR
, bit
/ TARGET_CHAR_BIT
, name
);
4865 TYPE_UNSIGNED (t
) = 1;
4870 /* Allocate a TYPE_CODE_BOOL type structure associated with GDBARCH.
4871 BIT is the type size in bits. If UNSIGNED_P is non-zero, set
4872 the type's TYPE_UNSIGNED flag. NAME is the type name. */
4875 arch_boolean_type (struct gdbarch
*gdbarch
,
4876 int bit
, int unsigned_p
, const char *name
)
4880 t
= arch_type (gdbarch
, TYPE_CODE_BOOL
, bit
/ TARGET_CHAR_BIT
, name
);
4882 TYPE_UNSIGNED (t
) = 1;
4887 /* Allocate a TYPE_CODE_FLT type structure associated with GDBARCH.
4888 BIT is the type size in bits; if BIT equals -1, the size is
4889 determined by the floatformat. NAME is the type name. Set the
4890 TYPE_FLOATFORMAT from FLOATFORMATS. */
4893 arch_float_type (struct gdbarch
*gdbarch
,
4894 int bit
, const char *name
,
4895 const struct floatformat
**floatformats
)
4899 bit
= verify_floatformat (bit
, floatformats
);
4900 t
= arch_type (gdbarch
, TYPE_CODE_FLT
, bit
/ TARGET_CHAR_BIT
, name
);
4901 TYPE_FLOATFORMAT (t
) = floatformats
;
4906 /* Allocate a TYPE_CODE_DECFLOAT type structure associated with GDBARCH.
4907 BIT is the type size in bits. NAME is the type name. */
4910 arch_decfloat_type (struct gdbarch
*gdbarch
, int bit
, const char *name
)
4914 t
= arch_type (gdbarch
, TYPE_CODE_DECFLOAT
, bit
/ TARGET_CHAR_BIT
, name
);
4918 /* Allocate a TYPE_CODE_COMPLEX type structure associated with GDBARCH.
4919 NAME is the type name. TARGET_TYPE is the component float type. */
4922 arch_complex_type (struct gdbarch
*gdbarch
,
4923 const char *name
, struct type
*target_type
)
4927 t
= arch_type (gdbarch
, TYPE_CODE_COMPLEX
,
4928 2 * TYPE_LENGTH (target_type
), name
);
4929 TYPE_TARGET_TYPE (t
) = target_type
;
4933 /* Allocate a TYPE_CODE_PTR type structure associated with GDBARCH.
4934 BIT is the pointer type size in bits. NAME is the type name.
4935 TARGET_TYPE is the pointer target type. Always sets the pointer type's
4936 TYPE_UNSIGNED flag. */
4939 arch_pointer_type (struct gdbarch
*gdbarch
,
4940 int bit
, const char *name
, struct type
*target_type
)
4944 t
= arch_type (gdbarch
, TYPE_CODE_PTR
, bit
/ TARGET_CHAR_BIT
, name
);
4945 TYPE_TARGET_TYPE (t
) = target_type
;
4946 TYPE_UNSIGNED (t
) = 1;
4950 /* Allocate a TYPE_CODE_FLAGS type structure associated with GDBARCH.
4951 NAME is the type name. LENGTH is the size of the flag word in bytes. */
4954 arch_flags_type (struct gdbarch
*gdbarch
, const char *name
, int length
)
4956 int max_nfields
= length
* TARGET_CHAR_BIT
;
4959 type
= arch_type (gdbarch
, TYPE_CODE_FLAGS
, length
, name
);
4960 TYPE_UNSIGNED (type
) = 1;
4961 TYPE_NFIELDS (type
) = 0;
4962 /* Pre-allocate enough space assuming every field is one bit. */
4964 = (struct field
*) TYPE_ZALLOC (type
, max_nfields
* sizeof (struct field
));
4969 /* Add field to TYPE_CODE_FLAGS type TYPE to indicate the bit at
4970 position BITPOS is called NAME. Pass NAME as "" for fields that
4971 should not be printed. */
4974 append_flags_type_field (struct type
*type
, int start_bitpos
, int nr_bits
,
4975 struct type
*field_type
, const char *name
)
4977 int type_bitsize
= TYPE_LENGTH (type
) * TARGET_CHAR_BIT
;
4978 int field_nr
= TYPE_NFIELDS (type
);
4980 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_FLAGS
);
4981 gdb_assert (TYPE_NFIELDS (type
) + 1 <= type_bitsize
);
4982 gdb_assert (start_bitpos
>= 0 && start_bitpos
< type_bitsize
);
4983 gdb_assert (nr_bits
>= 1 && nr_bits
<= type_bitsize
);
4984 gdb_assert (name
!= NULL
);
4986 TYPE_FIELD_NAME (type
, field_nr
) = xstrdup (name
);
4987 TYPE_FIELD_TYPE (type
, field_nr
) = field_type
;
4988 SET_FIELD_BITPOS (TYPE_FIELD (type
, field_nr
), start_bitpos
);
4989 TYPE_FIELD_BITSIZE (type
, field_nr
) = nr_bits
;
4990 ++TYPE_NFIELDS (type
);
4993 /* Special version of append_flags_type_field to add a flag field.
4994 Add field to TYPE_CODE_FLAGS type TYPE to indicate the bit at
4995 position BITPOS is called NAME. */
4998 append_flags_type_flag (struct type
*type
, int bitpos
, const char *name
)
5000 struct gdbarch
*gdbarch
= get_type_arch (type
);
5002 append_flags_type_field (type
, bitpos
, 1,
5003 builtin_type (gdbarch
)->builtin_bool
,
5007 /* Allocate a TYPE_CODE_STRUCT or TYPE_CODE_UNION type structure (as
5008 specified by CODE) associated with GDBARCH. NAME is the type name. */
5011 arch_composite_type (struct gdbarch
*gdbarch
, const char *name
,
5012 enum type_code code
)
5016 gdb_assert (code
== TYPE_CODE_STRUCT
|| code
== TYPE_CODE_UNION
);
5017 t
= arch_type (gdbarch
, code
, 0, NULL
);
5018 TYPE_TAG_NAME (t
) = name
;
5019 INIT_CPLUS_SPECIFIC (t
);
5023 /* Add new field with name NAME and type FIELD to composite type T.
5024 Do not set the field's position or adjust the type's length;
5025 the caller should do so. Return the new field. */
5028 append_composite_type_field_raw (struct type
*t
, const char *name
,
5033 TYPE_NFIELDS (t
) = TYPE_NFIELDS (t
) + 1;
5034 TYPE_FIELDS (t
) = XRESIZEVEC (struct field
, TYPE_FIELDS (t
),
5036 f
= &(TYPE_FIELDS (t
)[TYPE_NFIELDS (t
) - 1]);
5037 memset (f
, 0, sizeof f
[0]);
5038 FIELD_TYPE (f
[0]) = field
;
5039 FIELD_NAME (f
[0]) = name
;
5043 /* Add new field with name NAME and type FIELD to composite type T.
5044 ALIGNMENT (if non-zero) specifies the minimum field alignment. */
5047 append_composite_type_field_aligned (struct type
*t
, const char *name
,
5048 struct type
*field
, int alignment
)
5050 struct field
*f
= append_composite_type_field_raw (t
, name
, field
);
5052 if (TYPE_CODE (t
) == TYPE_CODE_UNION
)
5054 if (TYPE_LENGTH (t
) < TYPE_LENGTH (field
))
5055 TYPE_LENGTH (t
) = TYPE_LENGTH (field
);
5057 else if (TYPE_CODE (t
) == TYPE_CODE_STRUCT
)
5059 TYPE_LENGTH (t
) = TYPE_LENGTH (t
) + TYPE_LENGTH (field
);
5060 if (TYPE_NFIELDS (t
) > 1)
5062 SET_FIELD_BITPOS (f
[0],
5063 (FIELD_BITPOS (f
[-1])
5064 + (TYPE_LENGTH (FIELD_TYPE (f
[-1]))
5065 * TARGET_CHAR_BIT
)));
5071 alignment
*= TARGET_CHAR_BIT
;
5072 left
= FIELD_BITPOS (f
[0]) % alignment
;
5076 SET_FIELD_BITPOS (f
[0], FIELD_BITPOS (f
[0]) + (alignment
- left
));
5077 TYPE_LENGTH (t
) += (alignment
- left
) / TARGET_CHAR_BIT
;
5084 /* Add new field with name NAME and type FIELD to composite type T. */
5087 append_composite_type_field (struct type
*t
, const char *name
,
5090 append_composite_type_field_aligned (t
, name
, field
, 0);
5093 static struct gdbarch_data
*gdbtypes_data
;
5095 const struct builtin_type
*
5096 builtin_type (struct gdbarch
*gdbarch
)
5098 return (const struct builtin_type
*) gdbarch_data (gdbarch
, gdbtypes_data
);
5102 gdbtypes_post_init (struct gdbarch
*gdbarch
)
5104 struct builtin_type
*builtin_type
5105 = GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct builtin_type
);
5108 builtin_type
->builtin_void
5109 = arch_type (gdbarch
, TYPE_CODE_VOID
, 1, "void");
5110 builtin_type
->builtin_char
5111 = arch_integer_type (gdbarch
, TARGET_CHAR_BIT
,
5112 !gdbarch_char_signed (gdbarch
), "char");
5113 TYPE_NOSIGN (builtin_type
->builtin_char
) = 1;
5114 builtin_type
->builtin_signed_char
5115 = arch_integer_type (gdbarch
, TARGET_CHAR_BIT
,
5117 builtin_type
->builtin_unsigned_char
5118 = arch_integer_type (gdbarch
, TARGET_CHAR_BIT
,
5119 1, "unsigned char");
5120 builtin_type
->builtin_short
5121 = arch_integer_type (gdbarch
, gdbarch_short_bit (gdbarch
),
5123 builtin_type
->builtin_unsigned_short
5124 = arch_integer_type (gdbarch
, gdbarch_short_bit (gdbarch
),
5125 1, "unsigned short");
5126 builtin_type
->builtin_int
5127 = arch_integer_type (gdbarch
, gdbarch_int_bit (gdbarch
),
5129 builtin_type
->builtin_unsigned_int
5130 = arch_integer_type (gdbarch
, gdbarch_int_bit (gdbarch
),
5132 builtin_type
->builtin_long
5133 = arch_integer_type (gdbarch
, gdbarch_long_bit (gdbarch
),
5135 builtin_type
->builtin_unsigned_long
5136 = arch_integer_type (gdbarch
, gdbarch_long_bit (gdbarch
),
5137 1, "unsigned long");
5138 builtin_type
->builtin_long_long
5139 = arch_integer_type (gdbarch
, gdbarch_long_long_bit (gdbarch
),
5141 builtin_type
->builtin_unsigned_long_long
5142 = arch_integer_type (gdbarch
, gdbarch_long_long_bit (gdbarch
),
5143 1, "unsigned long long");
5144 builtin_type
->builtin_float
5145 = arch_float_type (gdbarch
, gdbarch_float_bit (gdbarch
),
5146 "float", gdbarch_float_format (gdbarch
));
5147 builtin_type
->builtin_double
5148 = arch_float_type (gdbarch
, gdbarch_double_bit (gdbarch
),
5149 "double", gdbarch_double_format (gdbarch
));
5150 builtin_type
->builtin_long_double
5151 = arch_float_type (gdbarch
, gdbarch_long_double_bit (gdbarch
),
5152 "long double", gdbarch_long_double_format (gdbarch
));
5153 builtin_type
->builtin_complex
5154 = arch_complex_type (gdbarch
, "complex",
5155 builtin_type
->builtin_float
);
5156 builtin_type
->builtin_double_complex
5157 = arch_complex_type (gdbarch
, "double complex",
5158 builtin_type
->builtin_double
);
5159 builtin_type
->builtin_string
5160 = arch_type (gdbarch
, TYPE_CODE_STRING
, 1, "string");
5161 builtin_type
->builtin_bool
5162 = arch_type (gdbarch
, TYPE_CODE_BOOL
, 1, "bool");
5164 /* The following three are about decimal floating point types, which
5165 are 32-bits, 64-bits and 128-bits respectively. */
5166 builtin_type
->builtin_decfloat
5167 = arch_decfloat_type (gdbarch
, 32, "_Decimal32");
5168 builtin_type
->builtin_decdouble
5169 = arch_decfloat_type (gdbarch
, 64, "_Decimal64");
5170 builtin_type
->builtin_declong
5171 = arch_decfloat_type (gdbarch
, 128, "_Decimal128");
5173 /* "True" character types. */
5174 builtin_type
->builtin_true_char
5175 = arch_character_type (gdbarch
, TARGET_CHAR_BIT
, 0, "true character");
5176 builtin_type
->builtin_true_unsigned_char
5177 = arch_character_type (gdbarch
, TARGET_CHAR_BIT
, 1, "true character");
5179 /* Fixed-size integer types. */
5180 builtin_type
->builtin_int0
5181 = arch_integer_type (gdbarch
, 0, 0, "int0_t");
5182 builtin_type
->builtin_int8
5183 = arch_integer_type (gdbarch
, 8, 0, "int8_t");
5184 builtin_type
->builtin_uint8
5185 = arch_integer_type (gdbarch
, 8, 1, "uint8_t");
5186 builtin_type
->builtin_int16
5187 = arch_integer_type (gdbarch
, 16, 0, "int16_t");
5188 builtin_type
->builtin_uint16
5189 = arch_integer_type (gdbarch
, 16, 1, "uint16_t");
5190 builtin_type
->builtin_int32
5191 = arch_integer_type (gdbarch
, 32, 0, "int32_t");
5192 builtin_type
->builtin_uint32
5193 = arch_integer_type (gdbarch
, 32, 1, "uint32_t");
5194 builtin_type
->builtin_int64
5195 = arch_integer_type (gdbarch
, 64, 0, "int64_t");
5196 builtin_type
->builtin_uint64
5197 = arch_integer_type (gdbarch
, 64, 1, "uint64_t");
5198 builtin_type
->builtin_int128
5199 = arch_integer_type (gdbarch
, 128, 0, "int128_t");
5200 builtin_type
->builtin_uint128
5201 = arch_integer_type (gdbarch
, 128, 1, "uint128_t");
5202 TYPE_INSTANCE_FLAGS (builtin_type
->builtin_int8
) |=
5203 TYPE_INSTANCE_FLAG_NOTTEXT
;
5204 TYPE_INSTANCE_FLAGS (builtin_type
->builtin_uint8
) |=
5205 TYPE_INSTANCE_FLAG_NOTTEXT
;
5207 /* Wide character types. */
5208 builtin_type
->builtin_char16
5209 = arch_integer_type (gdbarch
, 16, 1, "char16_t");
5210 builtin_type
->builtin_char32
5211 = arch_integer_type (gdbarch
, 32, 1, "char32_t");
5212 builtin_type
->builtin_wchar
5213 = arch_integer_type (gdbarch
, gdbarch_wchar_bit (gdbarch
),
5214 !gdbarch_wchar_signed (gdbarch
), "wchar_t");
5216 /* Default data/code pointer types. */
5217 builtin_type
->builtin_data_ptr
5218 = lookup_pointer_type (builtin_type
->builtin_void
);
5219 builtin_type
->builtin_func_ptr
5220 = lookup_pointer_type (lookup_function_type (builtin_type
->builtin_void
));
5221 builtin_type
->builtin_func_func
5222 = lookup_function_type (builtin_type
->builtin_func_ptr
);
5224 /* This type represents a GDB internal function. */
5225 builtin_type
->internal_fn
5226 = arch_type (gdbarch
, TYPE_CODE_INTERNAL_FUNCTION
, 0,
5227 "<internal function>");
5229 /* This type represents an xmethod. */
5230 builtin_type
->xmethod
5231 = arch_type (gdbarch
, TYPE_CODE_XMETHOD
, 0, "<xmethod>");
5233 return builtin_type
;
5236 /* This set of objfile-based types is intended to be used by symbol
5237 readers as basic types. */
5239 static const struct objfile_data
*objfile_type_data
;
5241 const struct objfile_type
*
5242 objfile_type (struct objfile
*objfile
)
5244 struct gdbarch
*gdbarch
;
5245 struct objfile_type
*objfile_type
5246 = (struct objfile_type
*) objfile_data (objfile
, objfile_type_data
);
5249 return objfile_type
;
5251 objfile_type
= OBSTACK_CALLOC (&objfile
->objfile_obstack
,
5252 1, struct objfile_type
);
5254 /* Use the objfile architecture to determine basic type properties. */
5255 gdbarch
= get_objfile_arch (objfile
);
5258 objfile_type
->builtin_void
5259 = init_type (objfile
, TYPE_CODE_VOID
, 1, "void");
5260 objfile_type
->builtin_char
5261 = init_integer_type (objfile
, TARGET_CHAR_BIT
,
5262 !gdbarch_char_signed (gdbarch
), "char");
5263 TYPE_NOSIGN (objfile_type
->builtin_char
) = 1;
5264 objfile_type
->builtin_signed_char
5265 = init_integer_type (objfile
, TARGET_CHAR_BIT
,
5267 objfile_type
->builtin_unsigned_char
5268 = init_integer_type (objfile
, TARGET_CHAR_BIT
,
5269 1, "unsigned char");
5270 objfile_type
->builtin_short
5271 = init_integer_type (objfile
, gdbarch_short_bit (gdbarch
),
5273 objfile_type
->builtin_unsigned_short
5274 = init_integer_type (objfile
, gdbarch_short_bit (gdbarch
),
5275 1, "unsigned short");
5276 objfile_type
->builtin_int
5277 = init_integer_type (objfile
, gdbarch_int_bit (gdbarch
),
5279 objfile_type
->builtin_unsigned_int
5280 = init_integer_type (objfile
, gdbarch_int_bit (gdbarch
),
5282 objfile_type
->builtin_long
5283 = init_integer_type (objfile
, gdbarch_long_bit (gdbarch
),
5285 objfile_type
->builtin_unsigned_long
5286 = init_integer_type (objfile
, gdbarch_long_bit (gdbarch
),
5287 1, "unsigned long");
5288 objfile_type
->builtin_long_long
5289 = init_integer_type (objfile
, gdbarch_long_long_bit (gdbarch
),
5291 objfile_type
->builtin_unsigned_long_long
5292 = init_integer_type (objfile
, gdbarch_long_long_bit (gdbarch
),
5293 1, "unsigned long long");
5294 objfile_type
->builtin_float
5295 = init_float_type (objfile
, gdbarch_float_bit (gdbarch
),
5296 "float", gdbarch_float_format (gdbarch
));
5297 objfile_type
->builtin_double
5298 = init_float_type (objfile
, gdbarch_double_bit (gdbarch
),
5299 "double", gdbarch_double_format (gdbarch
));
5300 objfile_type
->builtin_long_double
5301 = init_float_type (objfile
, gdbarch_long_double_bit (gdbarch
),
5302 "long double", gdbarch_long_double_format (gdbarch
));
5304 /* This type represents a type that was unrecognized in symbol read-in. */
5305 objfile_type
->builtin_error
5306 = init_type (objfile
, TYPE_CODE_ERROR
, 0, "<unknown type>");
5308 /* The following set of types is used for symbols with no
5309 debug information. */
5310 objfile_type
->nodebug_text_symbol
5311 = init_type (objfile
, TYPE_CODE_FUNC
, 1,
5312 "<text variable, no debug info>");
5313 TYPE_TARGET_TYPE (objfile_type
->nodebug_text_symbol
)
5314 = objfile_type
->builtin_int
;
5315 objfile_type
->nodebug_text_gnu_ifunc_symbol
5316 = init_type (objfile
, TYPE_CODE_FUNC
, 1,
5317 "<text gnu-indirect-function variable, no debug info>");
5318 TYPE_TARGET_TYPE (objfile_type
->nodebug_text_gnu_ifunc_symbol
)
5319 = objfile_type
->nodebug_text_symbol
;
5320 TYPE_GNU_IFUNC (objfile_type
->nodebug_text_gnu_ifunc_symbol
) = 1;
5321 objfile_type
->nodebug_got_plt_symbol
5322 = init_pointer_type (objfile
, gdbarch_addr_bit (gdbarch
),
5323 "<text from jump slot in .got.plt, no debug info>",
5324 objfile_type
->nodebug_text_symbol
);
5325 objfile_type
->nodebug_data_symbol
5326 = init_integer_type (objfile
, gdbarch_int_bit (gdbarch
), 0,
5327 "<data variable, no debug info>");
5328 objfile_type
->nodebug_unknown_symbol
5329 = init_integer_type (objfile
, TARGET_CHAR_BIT
, 0,
5330 "<variable (not text or data), no debug info>");
5331 objfile_type
->nodebug_tls_symbol
5332 = init_integer_type (objfile
, gdbarch_int_bit (gdbarch
), 0,
5333 "<thread local variable, no debug info>");
5335 /* NOTE: on some targets, addresses and pointers are not necessarily
5339 - gdb's `struct type' always describes the target's
5341 - gdb's `struct value' objects should always hold values in
5343 - gdb's CORE_ADDR values are addresses in the unified virtual
5344 address space that the assembler and linker work with. Thus,
5345 since target_read_memory takes a CORE_ADDR as an argument, it
5346 can access any memory on the target, even if the processor has
5347 separate code and data address spaces.
5349 In this context, objfile_type->builtin_core_addr is a bit odd:
5350 it's a target type for a value the target will never see. It's
5351 only used to hold the values of (typeless) linker symbols, which
5352 are indeed in the unified virtual address space. */
5354 objfile_type
->builtin_core_addr
5355 = init_integer_type (objfile
, gdbarch_addr_bit (gdbarch
), 1,
5358 set_objfile_data (objfile
, objfile_type_data
, objfile_type
);
5359 return objfile_type
;
5362 extern initialize_file_ftype _initialize_gdbtypes
;
5365 _initialize_gdbtypes (void)
5367 gdbtypes_data
= gdbarch_data_register_post_init (gdbtypes_post_init
);
5368 objfile_type_data
= register_objfile_data ();
5370 add_setshow_zuinteger_cmd ("overload", no_class
, &overload_debug
,
5371 _("Set debugging of C++ overloading."),
5372 _("Show debugging of C++ overloading."),
5373 _("When enabled, ranking of the "
5374 "functions is displayed."),
5376 show_overload_debug
,
5377 &setdebuglist
, &showdebuglist
);
5379 /* Add user knob for controlling resolution of opaque types. */
5380 add_setshow_boolean_cmd ("opaque-type-resolution", class_support
,
5381 &opaque_type_resolution
,
5382 _("Set resolution of opaque struct/class/union"
5383 " types (if set before loading symbols)."),
5384 _("Show resolution of opaque struct/class/union"
5385 " types (if set before loading symbols)."),
5387 show_opaque_type_resolution
,
5388 &setlist
, &showlist
);
5390 /* Add an option to permit non-strict type checking. */
5391 add_setshow_boolean_cmd ("type", class_support
,
5392 &strict_type_checking
,
5393 _("Set strict type checking."),
5394 _("Show strict type checking."),
5396 show_strict_type_checking
,
5397 &setchecklist
, &showchecklist
);