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Diffstat (limited to 'libraries/synopsys/std_logic_unsigned.vhdl')
| -rw-r--r-- | libraries/synopsys/std_logic_unsigned.vhdl | 329 |
1 files changed, 329 insertions, 0 deletions
diff --git a/libraries/synopsys/std_logic_unsigned.vhdl b/libraries/synopsys/std_logic_unsigned.vhdl new file mode 100644 index 0000000..3e29847 --- /dev/null +++ b/libraries/synopsys/std_logic_unsigned.vhdl @@ -0,0 +1,329 @@ +-------------------------------------------------------------------------- +-- -- +-- Copyright (c) 1990, 1991, 1992 by Synopsys, Inc. -- +-- All rights reserved. -- +-- -- +-- This source file may be used and distributed without restriction -- +-- provided that this copyright statement is not removed from the file -- +-- and that any derivative work contains this copyright notice. -- +-- -- +-- Package name: STD_LOGIC_UNSIGNED -- +-- -- +-- -- +-- Date: 09/11/92 KN -- +-- 10/08/92 AMT -- +-- -- +-- Purpose: -- +-- A set of unsigned arithemtic, conversion, -- +-- and comparision functions for STD_LOGIC_VECTOR. -- +-- -- +-- Note: comparision of same length discrete arrays is defined -- +-- by the LRM. This package will "overload" those -- +-- definitions -- +-- -- +-------------------------------------------------------------------------- + +library IEEE; +use IEEE.std_logic_1164.all; +use IEEE.std_logic_arith.all; + +package STD_LOGIC_UNSIGNED is + + function "+"(L: STD_LOGIC_VECTOR; R: STD_LOGIC_VECTOR) return STD_LOGIC_VECTOR; + function "+"(L: STD_LOGIC_VECTOR; R: INTEGER) return STD_LOGIC_VECTOR; + function "+"(L: INTEGER; R: STD_LOGIC_VECTOR) return STD_LOGIC_VECTOR; + function "+"(L: STD_LOGIC_VECTOR; R: STD_LOGIC) return STD_LOGIC_VECTOR; + function "+"(L: STD_LOGIC; R: STD_LOGIC_VECTOR) return STD_LOGIC_VECTOR; + + function "-"(L: STD_LOGIC_VECTOR; R: STD_LOGIC_VECTOR) return STD_LOGIC_VECTOR; + function "-"(L: STD_LOGIC_VECTOR; R: INTEGER) return STD_LOGIC_VECTOR; + function "-"(L: INTEGER; R: STD_LOGIC_VECTOR) return STD_LOGIC_VECTOR; + function "-"(L: STD_LOGIC_VECTOR; R: STD_LOGIC) return STD_LOGIC_VECTOR; + function "-"(L: STD_LOGIC; R: STD_LOGIC_VECTOR) return STD_LOGIC_VECTOR; + + function "+"(L: STD_LOGIC_VECTOR) return STD_LOGIC_VECTOR; + + function "*"(L: STD_LOGIC_VECTOR; R: STD_LOGIC_VECTOR) return STD_LOGIC_VECTOR; + + function "<"(L: STD_LOGIC_VECTOR; R: STD_LOGIC_VECTOR) return BOOLEAN; + function "<"(L: STD_LOGIC_VECTOR; R: INTEGER) return BOOLEAN; + function "<"(L: INTEGER; R: STD_LOGIC_VECTOR) return BOOLEAN; + + function "<="(L: STD_LOGIC_VECTOR; R: STD_LOGIC_VECTOR) return BOOLEAN; + function "<="(L: STD_LOGIC_VECTOR; R: INTEGER) return BOOLEAN; + function "<="(L: INTEGER; R: STD_LOGIC_VECTOR) return BOOLEAN; + + function ">"(L: STD_LOGIC_VECTOR; R: STD_LOGIC_VECTOR) return BOOLEAN; + function ">"(L: STD_LOGIC_VECTOR; R: INTEGER) return BOOLEAN; + function ">"(L: INTEGER; R: STD_LOGIC_VECTOR) return BOOLEAN; + + function ">="(L: STD_LOGIC_VECTOR; R: STD_LOGIC_VECTOR) return BOOLEAN; + function ">="(L: STD_LOGIC_VECTOR; R: INTEGER) return BOOLEAN; + function ">="(L: INTEGER; R: STD_LOGIC_VECTOR) return BOOLEAN; + + function "="(L: STD_LOGIC_VECTOR; R: STD_LOGIC_VECTOR) return BOOLEAN; + function "="(L: STD_LOGIC_VECTOR; R: INTEGER) return BOOLEAN; + function "="(L: INTEGER; R: STD_LOGIC_VECTOR) return BOOLEAN; + + function "/="(L: STD_LOGIC_VECTOR; R: STD_LOGIC_VECTOR) return BOOLEAN; + function "/="(L: STD_LOGIC_VECTOR; R: INTEGER) return BOOLEAN; + function "/="(L: INTEGER; R: STD_LOGIC_VECTOR) return BOOLEAN; + function SHL(ARG:STD_LOGIC_VECTOR;COUNT: STD_LOGIC_VECTOR) return STD_LOGIC_VECTOR; + function SHR(ARG:STD_LOGIC_VECTOR;COUNT: STD_LOGIC_VECTOR) return STD_LOGIC_VECTOR; + + function CONV_INTEGER(ARG: STD_LOGIC_VECTOR) return INTEGER; + +-- remove this since it is already in std_logic_arith +-- function CONV_STD_LOGIC_VECTOR(ARG: INTEGER; SIZE: INTEGER) return STD_LOGIC_VECTOR; + +end STD_LOGIC_UNSIGNED; + + + +library IEEE; +use IEEE.std_logic_1164.all; +use IEEE.std_logic_arith.all; + +package body STD_LOGIC_UNSIGNED is + + + function maximum(L, R: INTEGER) return INTEGER is + begin + if L > R then + return L; + else + return R; + end if; + end; + + + function "+"(L: STD_LOGIC_VECTOR; R: STD_LOGIC_VECTOR) return STD_LOGIC_VECTOR is + -- pragma label_applies_to plus + constant length: INTEGER := maximum(L'length, R'length); + variable result : STD_LOGIC_VECTOR (length-1 downto 0); + begin + result := UNSIGNED(L) + UNSIGNED(R);-- pragma label plus + return std_logic_vector(result); + end; + + function "+"(L: STD_LOGIC_VECTOR; R: INTEGER) return STD_LOGIC_VECTOR is + -- pragma label_applies_to plus + variable result : STD_LOGIC_VECTOR (L'range); + begin + result := UNSIGNED(L) + R;-- pragma label plus + return std_logic_vector(result); + end; + + function "+"(L: INTEGER; R: STD_LOGIC_VECTOR) return STD_LOGIC_VECTOR is + -- pragma label_applies_to plus + variable result : STD_LOGIC_VECTOR (R'range); + begin + result := L + UNSIGNED(R);-- pragma label plus + return std_logic_vector(result); + end; + + function "+"(L: STD_LOGIC_VECTOR; R: STD_LOGIC) return STD_LOGIC_VECTOR is + -- pragma label_applies_to plus + variable result : STD_LOGIC_VECTOR (L'range); + begin + result := UNSIGNED(L) + R;-- pragma label plus + return std_logic_vector(result); + end; + + function "+"(L: STD_LOGIC; R: STD_LOGIC_VECTOR) return STD_LOGIC_VECTOR is + -- pragma label_applies_to plus + variable result : STD_LOGIC_VECTOR (R'range); + begin + result := L + UNSIGNED(R);-- pragma label plus + return std_logic_vector(result); + end; + + function "-"(L: STD_LOGIC_VECTOR; R: STD_LOGIC_VECTOR) return STD_LOGIC_VECTOR is + -- pragma label_applies_to minus + constant length: INTEGER := maximum(L'length, R'length); + variable result : STD_LOGIC_VECTOR (length-1 downto 0); + begin + result := UNSIGNED(L) - UNSIGNED(R); -- pragma label minus + return std_logic_vector(result); + end; + + function "-"(L: STD_LOGIC_VECTOR; R: INTEGER) return STD_LOGIC_VECTOR is + -- pragma label_applies_to minus + variable result : STD_LOGIC_VECTOR (L'range); + begin + result := UNSIGNED(L) - R; -- pragma label minus + return std_logic_vector(result); + end; + + function "-"(L: INTEGER; R: STD_LOGIC_VECTOR) return STD_LOGIC_VECTOR is + -- pragma label_applies_to minus + variable result : STD_LOGIC_VECTOR (R'range); + begin + result := L - UNSIGNED(R); -- pragma label minus + return std_logic_vector(result); + end; + + function "-"(L: STD_LOGIC_VECTOR; R: STD_LOGIC) return STD_LOGIC_VECTOR is + variable result : STD_LOGIC_VECTOR (L'range); + begin + result := UNSIGNED(L) - R; + return std_logic_vector(result); + end; + + function "-"(L: STD_LOGIC; R: STD_LOGIC_VECTOR) return STD_LOGIC_VECTOR is + -- pragma label_applies_to minus + variable result : STD_LOGIC_VECTOR (R'range); + begin + result := L - UNSIGNED(R); -- pragma label minus + return std_logic_vector(result); + end; + + function "+"(L: STD_LOGIC_VECTOR) return STD_LOGIC_VECTOR is + variable result : STD_LOGIC_VECTOR (L'range); + begin + result := + UNSIGNED(L); + return std_logic_vector(result); + end; + + function "*"(L: STD_LOGIC_VECTOR; R: STD_LOGIC_VECTOR) return STD_LOGIC_VECTOR is + -- pragma label_applies_to mult + constant length: INTEGER := maximum(L'length, R'length); + variable result : STD_LOGIC_VECTOR ((L'length+R'length-1) downto 0); + begin + result := UNSIGNED(L) * UNSIGNED(R); -- pragma label mult + return std_logic_vector(result); + end; + + function "<"(L: STD_LOGIC_VECTOR; R: STD_LOGIC_VECTOR) return BOOLEAN is + -- pragma label_applies_to lt + constant length: INTEGER := maximum(L'length, R'length); + begin + return UNSIGNED(L) < UNSIGNED(R); -- pragma label lt + end; + + function "<"(L: STD_LOGIC_VECTOR; R: INTEGER) return BOOLEAN is + -- pragma label_applies_to lt + begin + return UNSIGNED(L) < R; -- pragma label lt + end; + + function "<"(L: INTEGER; R: STD_LOGIC_VECTOR) return BOOLEAN is + -- pragma label_applies_to lt + begin + return L < UNSIGNED(R); -- pragma label lt + end; + + function "<="(L: STD_LOGIC_VECTOR; R: STD_LOGIC_VECTOR) return BOOLEAN is + -- pragma label_applies_to leq + begin + return UNSIGNED(L) <= UNSIGNED(R); -- pragma label leq + end; + + function "<="(L: STD_LOGIC_VECTOR; R: INTEGER) return BOOLEAN is + -- pragma label_applies_to leq + begin + return UNSIGNED(L) <= R; -- pragma label leq + end; + + function "<="(L: INTEGER; R: STD_LOGIC_VECTOR) return BOOLEAN is + -- pragma label_applies_to leq + begin + return L <= UNSIGNED(R); -- pragma label leq + end; + + function ">"(L: STD_LOGIC_VECTOR; R: STD_LOGIC_VECTOR) return BOOLEAN is + -- pragma label_applies_to gt + begin + return UNSIGNED(L) > UNSIGNED(R); -- pragma label gt + end; + + function ">"(L: STD_LOGIC_VECTOR; R: INTEGER) return BOOLEAN is + -- pragma label_applies_to gt + begin + return UNSIGNED(L) > R; -- pragma label gt + end; + + function ">"(L: INTEGER; R: STD_LOGIC_VECTOR) return BOOLEAN is + -- pragma label_applies_to gt + begin + return L > UNSIGNED(R); -- pragma label gt + end; + + function ">="(L: STD_LOGIC_VECTOR; R: STD_LOGIC_VECTOR) return BOOLEAN is + -- pragma label_applies_to geq + begin + return UNSIGNED(L) >= UNSIGNED(R); -- pragma label geq + end; + + function ">="(L: STD_LOGIC_VECTOR; R: INTEGER) return BOOLEAN is + -- pragma label_applies_to geq + begin + return UNSIGNED(L) >= R; -- pragma label geq + end; + + function ">="(L: INTEGER; R: STD_LOGIC_VECTOR) return BOOLEAN is + -- pragma label_applies_to geq + begin + return L >= UNSIGNED(R); -- pragma label geq + end; + + function "="(L: STD_LOGIC_VECTOR; R: STD_LOGIC_VECTOR) return BOOLEAN is + begin + return UNSIGNED(L) = UNSIGNED(R); + end; + + function "="(L: STD_LOGIC_VECTOR; R: INTEGER) return BOOLEAN is + begin + return UNSIGNED(L) = R; + end; + + function "="(L: INTEGER; R: STD_LOGIC_VECTOR) return BOOLEAN is + begin + return L = UNSIGNED(R); + end; + + function "/="(L: STD_LOGIC_VECTOR; R: STD_LOGIC_VECTOR) return BOOLEAN is + begin + return UNSIGNED(L) /= UNSIGNED(R); + end; + + function "/="(L: STD_LOGIC_VECTOR; R: INTEGER) return BOOLEAN is + begin + return UNSIGNED(L) /= R; + end; + + function "/="(L: INTEGER; R: STD_LOGIC_VECTOR) return BOOLEAN is + begin + return L /= UNSIGNED(R); + end; + + function CONV_INTEGER(ARG: STD_LOGIC_VECTOR) return INTEGER is + variable result : UNSIGNED(ARG'range); + begin + result := UNSIGNED(ARG); + return CONV_INTEGER(result); + end; + function SHL(ARG:STD_LOGIC_VECTOR;COUNT: STD_LOGIC_VECTOR) return STD_LOGIC_VECTOR is + begin + return STD_LOGIC_VECTOR(SHL(UNSIGNED(ARG),UNSIGNED(COUNT))); + end; + + function SHR(ARG:STD_LOGIC_VECTOR;COUNT: STD_LOGIC_VECTOR) return STD_LOGIC_VECTOR is + begin + return STD_LOGIC_VECTOR(SHR(UNSIGNED(ARG),UNSIGNED(COUNT))); + end; + + +-- remove this since it is already in std_logic_arith + --function CONV_STD_LOGIC_VECTOR(ARG: INTEGER; SIZE: INTEGER) return STD_LOGIC_VECTOR is + --variable result1 : UNSIGNED (SIZE-1 downto 0); + --variable result2 : STD_LOGIC_VECTOR (SIZE-1 downto 0); + --begin + --result1 := CONV_UNSIGNED(ARG,SIZE); + --return std_logic_vector(result1); + --end; + + +end STD_LOGIC_UNSIGNED; + + |