/* Register groupings for GDB, the GNU debugger.
- Copyright (C) 2002-2014 Free Software Foundation, Inc.
+ Copyright (C) 2002-2016 Free Software Foundation, Inc.
Contributed by Red Hat.
void
reggroup_add (struct gdbarch *gdbarch, struct reggroup *group)
{
- struct reggroups *groups = gdbarch_data (gdbarch, reggroups_data);
+ struct reggroups *groups
+ = (struct reggroups *) gdbarch_data (gdbarch, reggroups_data);
if (groups == NULL)
{
/* ULGH, called during architecture initialization. Patch
things up. */
- groups = reggroups_init (gdbarch);
+ groups = (struct reggroups *) reggroups_init (gdbarch);
deprecated_set_gdbarch_data (gdbarch, reggroups_data, groups);
}
add_group (groups, group,
/* Don't allow this function to be called during architecture
creation. If there are no groups, use the default groups list. */
- groups = gdbarch_data (gdbarch, reggroups_data);
+ groups = (struct reggroups *) gdbarch_data (gdbarch, reggroups_data);
gdb_assert (groups != NULL);
if (groups->first == NULL)
groups = &default_groups;
return NULL;
}
+/* See reggroups.h. */
+
+struct reggroup *
+reggroup_prev (struct gdbarch *gdbarch, struct reggroup *curr)
+{
+ struct reggroups *groups;
+ struct reggroup_el *el;
+ struct reggroup *prev;
+
+ /* Don't allow this function to be called during architecture
+ creation. If there are no groups, use the default groups list. */
+ groups = (struct reggroups *) gdbarch_data (gdbarch, reggroups_data);
+ gdb_assert (groups != NULL);
+ if (groups->first == NULL)
+ groups = &default_groups;
+
+ prev = NULL;
+ for (el = groups->first; el != NULL; el = el->next)
+ {
+ gdb_assert (el->group != NULL);
+ if (el->group == curr)
+ return prev;
+ prev = el->group;
+ }
+ if (curr == NULL)
+ return prev;
+ return NULL;
+}
+
/* Is REGNUM a member of REGGROUP? */
int
default_register_reggroup_p (struct gdbarch *gdbarch, int regnum,