forked from cores/microwatt
You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
164 lines
5.1 KiB
VHDL
164 lines
5.1 KiB
VHDL
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;
|