* gdbtypes.c (append_composite_type_field_raw): New.

	(append_composite_type_field_aligned): Use the new function.
	* gdbtypes.h (append_composite_type_field_raw): Declare.
	* target-descriptions.c (struct tdesc_type_field): Add start and end.
	(struct tdesc_type_flag): New type.
	(struct tdesc_type): Add TDESC_TYPE_STRUCT and TDESC_TYPE_FLAGS to
	kind.  Add size to u.u.  Add u.f for flags.
	(tdesc_gdb_type): Handle TDESC_TYPE_STRUCT and TDESC_TYPE_FLAGS.
	(tdesc_free_type): Likewise.
	(tdesc_create_struct, tdesc_set_struct_size, tdesc_create_flags): New.
	(tdesc_add_field): Handle TDESC_TYPE_STRUCT.
	(tdesc_add_bitfield, tdesc_add_flag): New.
	* target-descriptions.h (tdesc_create_struct, tdesc_set_struct_size)
	(tdesc_create_flags, tdesc_add_bitfield, tdesc_add_flag): Declare.
	* xml-tdesc.c (struct tdesc_parsing_data): Rename current_union to
	current_type.  Add current_type_size and current_type_is_flags.
	(tdesc_start_union): Clear the new fields.
	(tdesc_start_struct, tdesc_start_flags): New.
	(tdesc_start_field): Handle struct fields, including bitfields.
	(field_attributes): Make type optional.  Add start and end.
	(union_children): Rename to struct_union_children.
	(union_attributes): Rename to struct_union_attributes.  Add optional
	size.
	(flags_attributes): New.
	(feature_children): Add struct and flags.
	* features/gdb-target.dtd: Add flags and struct to features.
	Make field type optional.  Add field start and end.

	doc/
	* gdb.texinfo (Types): Describe <struct> and <flags>.

	testsuite/
	* gdb.xml/extra-regs.xml: Add struct1, struct2, and flags
	types.  Add structreg, bitfields, and flags registers.
	* gdb.xml/tdesc-regs.exp: Test structreg and bitfields
	registers.

1 files changed, 10 insertions, 0 deletions

diff --git a/gdb/target-descriptions.h b/gdb/target-descriptions.h
index da0564b556c..caa72302df1 100644
--- a/gdb/target-descriptions.h
+++ b/gdb/target-descriptions.h
@@ -205,10 +205,20 @@ struct tdesc_type *tdesc_create_vector (struct tdesc_feature *feature,
 					const char *name,
 					struct tdesc_type *field_type,
 					int count);
+struct tdesc_type *tdesc_create_struct (struct tdesc_feature *feature,
+					const char *name);
+void tdesc_set_struct_size (struct tdesc_type *type, LONGEST size);
 struct tdesc_type *tdesc_create_union (struct tdesc_feature *feature,
 				       const char *name);
+struct tdesc_type *tdesc_create_flags (struct tdesc_feature *feature,
+				       const char *name,
+				       LONGEST size);
 void tdesc_add_field (struct tdesc_type *type, const char *field_name,
 		      struct tdesc_type *field_type);
+void tdesc_add_bitfield (struct tdesc_type *type, const char *field_name,
+			 int start, int end);
+void tdesc_add_flag (struct tdesc_type *type, int start,
+		     const char *flag_name);
 void tdesc_create_reg (struct tdesc_feature *feature, const char *name,
 		       int regnum, int save_restore, const char *group,
 		       int bitsize, const char *type);