library ieee;
use ieee.std_logic_1164.all;

package insn_helpers is
	function insn_rs (insn_in : std_ulogic_vector) return std_ulogic_vector;
	function insn_rt (insn_in : std_ulogic_vector) return std_ulogic_vector;
	function insn_ra (insn_in : std_ulogic_vector) return std_ulogic_vector;
	function insn_rb (insn_in : std_ulogic_vector) return std_ulogic_vector;
	function insn_si (insn_in : std_ulogic_vector) return std_ulogic_vector;
	function insn_ui (insn_in : std_ulogic_vector) return std_ulogic_vector;
	function insn_l (insn_in : std_ulogic_vector) return std_ulogic;
	function insn_sh32 (insn_in : std_ulogic_vector) return std_ulogic_vector;
	function insn_mb32 (insn_in : std_ulogic_vector) return std_ulogic_vector;
	function insn_me32 (insn_in : std_ulogic_vector) return std_ulogic_vector;
	function insn_li (insn_in : std_ulogic_vector) return std_ulogic_vector;
	function insn_lk (insn_in : std_ulogic_vector) return std_ulogic;
	function insn_rc (insn_in : std_ulogic_vector) return std_ulogic;
	function insn_bd (insn_in : std_ulogic_vector) return std_ulogic_vector;
	function insn_bf (insn_in : std_ulogic_vector) return std_ulogic_vector;
	function insn_fxm (insn_in : std_ulogic_vector) return std_ulogic_vector;
	function insn_bo (insn_in : std_ulogic_vector) return std_ulogic_vector;
	function insn_bi (insn_in : std_ulogic_vector) return std_ulogic_vector;
	function insn_bh (insn_in : std_ulogic_vector) return std_ulogic_vector;
	function insn_d (insn_in : std_ulogic_vector) return std_ulogic_vector;
	function insn_ds (insn_in : std_ulogic_vector) return std_ulogic_vector;
	function insn_to (insn_in : std_ulogic_vector) return std_ulogic_vector;
	function insn_bc (insn_in : std_ulogic_vector) return std_ulogic_vector;
	function insn_sh (insn_in : std_ulogic_vector) return std_ulogic_vector;
	function insn_me (insn_in : std_ulogic_vector) return std_ulogic_vector;
	function insn_mb (insn_in : std_ulogic_vector) return std_ulogic_vector;
end package insn_helpers;

package body insn_helpers is
	function insn_rs (insn_in : std_ulogic_vector) return std_ulogic_vector is
	begin
		return insn_in(25 downto 21);
	end;

	function insn_rt (insn_in : std_ulogic_vector) return std_ulogic_vector is
	begin
		return insn_in(25 downto 21);
	end;

	function insn_ra (insn_in : std_ulogic_vector) return std_ulogic_vector is
	begin
		return insn_in(20 downto 16);
	end;

	function insn_rb (insn_in : std_ulogic_vector) return std_ulogic_vector is
	begin
		return insn_in(15 downto 11);
	end;

	function insn_si (insn_in : std_ulogic_vector) return std_ulogic_vector is
	begin
		return insn_in(15 downto 0);
	end;

	function insn_ui (insn_in : std_ulogic_vector) return std_ulogic_vector is
	begin
		return insn_in(15 downto 0);
	end;

	function insn_l (insn_in : std_ulogic_vector) return std_ulogic is
	begin
		return insn_in(21);
	end;

	function insn_sh32 (insn_in : std_ulogic_vector) return std_ulogic_vector is
	begin
		return insn_in(15 downto 11);
	end;

	function insn_mb32 (insn_in : std_ulogic_vector) return std_ulogic_vector is
	begin
		return insn_in(10 downto 6);
	end;

	function insn_me32 (insn_in : std_ulogic_vector) return std_ulogic_vector is
	begin
		return insn_in(5 downto 1);
	end;

	function insn_li (insn_in : std_ulogic_vector) return std_ulogic_vector is
	begin
		return insn_in(25 downto 2);
	end;

	function insn_lk (insn_in : std_ulogic_vector) return std_ulogic is
	begin
		return insn_in(0);
	end;

	function insn_rc (insn_in : std_ulogic_vector) return std_ulogic is
	begin
		return insn_in(0);
	end;

	function insn_bd (insn_in : std_ulogic_vector) return std_ulogic_vector is
	begin
		return insn_in(15 downto 2);
	end;

	function insn_bf (insn_in : std_ulogic_vector) return std_ulogic_vector is
	begin
		return insn_in(25 downto 23);
	end;

	function insn_fxm (insn_in : std_ulogic_vector) return std_ulogic_vector is
	begin
		return insn_in(19 downto 12);
	end;

	function insn_bo (insn_in : std_ulogic_vector) return std_ulogic_vector is
	begin
		return insn_in(25 downto 21);
	end;

	function insn_bi (insn_in : std_ulogic_vector) return std_ulogic_vector is
	begin
		return insn_in(20 downto 16);
	end;

	function insn_bh (insn_in : std_ulogic_vector) return std_ulogic_vector is
	begin
		return insn_in(12 downto 11);
	end;

	function insn_d (insn_in : std_ulogic_vector) return std_ulogic_vector is
	begin
		return insn_in(15 downto 0);
	end;

	function insn_ds (insn_in : std_ulogic_vector) return std_ulogic_vector is
	begin
		return insn_in(15 downto 2);
	end;

	function insn_to (insn_in : std_ulogic_vector) return std_ulogic_vector is
	begin
		return insn_in(25 downto 21);
	end;

	function insn_bc (insn_in : std_ulogic_vector) return std_ulogic_vector is
	begin
		return insn_in(10 downto 6);
	end;

	function insn_sh (insn_in : std_ulogic_vector) return std_ulogic_vector is
	begin
		return insn_in(1) & insn_in(15 downto 11);
	end;

	function insn_me (insn_in : std_ulogic_vector) return std_ulogic_vector is
	begin
		return insn_in(5) & insn_in(10 downto 6);
	end;

	function insn_mb (insn_in : std_ulogic_vector) return std_ulogic_vector is
	begin
		return insn_in(5) & insn_in(10 downto 6);
	end;
end package body insn_helpers;