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Introduce TYPE_SPECIFIC_RUST_STUFF

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This adds a new enum constant, TYPE_SPECIFIC_RUST_STUFF, and changes
the DWARF reader to set this on Rust types.  This will be used as a
flag in a later patch.

Note that the size of the type_specific_field bitfield had to be
increased.  I checked that this did not impact the size of main_type.
This commit is contained in:
Tom Tromey
2023-08-04 13:39:46 -06:00
parent 49ed499c44
commit dec28322cf
3 changed files with 25 additions and 2 deletions
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11
gdb/gdbtypes.h
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@@ -501,6 +501,7 @@ enum type_specific_kind
TYPE_SPECIFIC_NONE,
TYPE_SPECIFIC_CPLUS_STUFF,
TYPE_SPECIFIC_GNAT_STUFF,
TYPE_SPECIFIC_RUST_STUFF,
TYPE_SPECIFIC_FLOATFORMAT,
/* Note: This is used by TYPE_CODE_FUNC and TYPE_CODE_METHOD. */
TYPE_SPECIFIC_FUNC,
@@ -856,7 +857,7 @@ struct main_type
/* * A discriminant telling us which field of the type_specific
union is being used for this type, if any. */
ENUM_BITFIELD(type_specific_kind) type_specific_field : 3;
ENUM_BITFIELD(type_specific_kind) type_specific_field : 4;
/* * Number of fields described for this type. This field appears
at this location because it packs nicely here. */
@@ -1833,6 +1834,14 @@ extern void allocate_gnat_aux_type (struct type *);
|| (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_NONE \
&& (type)->is_fixed_instance ()))
/* Currently there isn't any associated data -- this is just a
marker. */
#define INIT_RUST_SPECIFIC(type) \
TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_RUST_STUFF
#define HAVE_RUST_SPECIFIC(type) \
(TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_RUST_STUFF)
#define INIT_FUNC_SPECIFIC(type) \
(TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_FUNC, \
TYPE_MAIN_TYPE (type)->type_specific.func_stuff = (struct func_type *) \