Reformat crhelpers, and remove some stale code

Signed-off-by: Anton Blanchard <anton@linux.ibm.com>

crhelpers.vhdl

@@ -7,10 +7,6 @@ use work.common.all;
 package crhelpers is
     function fxm_to_num(fxm: std_ulogic_vector(7 downto 0)) return integer;
     function num_to_fxm(num: integer) return std_ulogic_vector;
-	--function from_crfile(cr: crfile) return std_ulogic_vector;
-	--function extract_one_crfield(cr: crfile; fxm: std_ulogic_vector(7 downto 0)) return std_ulogic_vector;
-	--function insert_multiple_crfields(cr_in: crfile; rs: std_ulogic_vector(63 downto 0); fxm: std_ulogic_vector(7 downto 0)) return crfile;
-	--function insert_one_crfield(cr_in: crfile; rs: std_ulogic_vector(63 downto 0); fxm: std_ulogic_vector(7 downto 0)) return crfile;
 end package crhelpers;
 
 package body crhelpers is
@@ -55,80 +51,4 @@ package body crhelpers is
         end case;
     end;
 
---	function from_crfile(cr: crfile) return std_ulogic_vector is
---		variable combined_cr : std_ulogic_vector(31 downto 0) := (others => '0');
---		variable high, low: integer range 0 to 31 := 0;
---	begin
---		for i in 0 to cr'length-1 loop
---			low := 4*(7-i);
---			high := low+3;
---			combined_cr(high downto low) := cr(i);
---		end loop;
---
---		return combined_cr;
---	end function;
---
---	function extract_one_crfield(cr: crfile; fxm: std_ulogic_vector(7 downto 0)) return std_ulogic_vector is
---		variable combined_cr : std_ulogic_vector(63 downto 0) := (others => '0');
---		variable crnum: integer range 0 to 7 := 0;
---	begin
---		crnum := fxm_to_num(fxm);
---
---		-- Vivado doesn't support non constant vector slice
---		-- low := 4*(7-crnum);
---		-- high := low+3;
---		-- combined_cr(high downto low) := cr(crnum);
---		case_0: case crnum is
---		when 0 =>
---		    combined_cr(31 downto 28) := cr(0);
---		when 1 =>
---		    combined_cr(27 downto 24) := cr(1);
---		when 2 =>
---		    combined_cr(23 downto 20) := cr(2);
---		when 3 =>
---		    combined_cr(19 downto 16) := cr(3);
---		when 4 =>
---		    combined_cr(15 downto 12) := cr(4);
---		when 5 =>
---		    combined_cr(11 downto 8) := cr(5);
---		when 6 =>
---		    combined_cr(7 downto 4) := cr(6);
---		when 7 =>
---		    combined_cr(3 downto 0) := cr(7);
---		end case;
---
---		return combined_cr;
---	end;
---
---	function insert_multiple_crfields(cr_in: crfile; rs: std_ulogic_vector(63 downto 0); fxm: std_ulogic_vector(7 downto 0)) return crfile is
---		variable cr : crfile;
---		variable combined_cr : std_ulogic_vector(63 downto 0) := (others => '0');
---		variable high, low: integer range 0 to 31 := 0;
---	begin
---		cr := cr_in;
---
---		for i in 0 to 7 loop
---			-- BE bit numbering
---			if fxm(7-i) = '1' then
---				low := 4*(7-i);
---				high := low+3;
---				cr(i) := rs(high downto low);
---			end if;
---		end loop;
---
---		return cr;
---	end;
---
---	function insert_one_crfield(cr_in: crfile; rs: std_ulogic_vector(63 downto 0); fxm: std_ulogic_vector(7 downto 0)) return crfile is
---		variable cr : crfile;
---		variable crnum: integer range 0 to 7 := 0;
---		variable high, low: integer range 0 to 31 := 0;
---	begin
---		cr := cr_in;
---		crnum := fxm_to_num(fxm);
---		low := 4*(7-crnum);
---		high := low+3;
---		cr(crnum) := rs(high downto low);
---		return cr;
---	end;
 end package body crhelpers;