arc_pgu_read
reg_ctrl = arc_pgu_read(arcpgu, ARCPGU_REG_CTRL);
val = arc_pgu_read(arcpgu, ARCPGU_REG_CTRL);
arc_pgu_read(arcpgu, ARCPGU_REG_CTRL) |
arc_pgu_read(arcpgu, ARCPGU_REG_CTRL) &
arc_pgu_read(arcpgu, ARCPGU_REG_ID));