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authorTristan Gingold2014-09-05 06:05:19 +0200
committerTristan Gingold2014-09-05 06:05:19 +0200
commitfe6ff5794545ce9f7d00985b55cf9d5b18725ea0 (patch)
tree9a61d61c8981ac292c27a94a2cf5c9aa1bf62143 /translate/grt/grt-std_logic_1164.ads
parent6d8c5299f20b4cd8f1e049f7eea454c00a3102b7 (diff)
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First run (using mcode) of OSVVM_2014_01.
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+-- GHDL Run Time (GRT) std_logic_1664 subprograms.
+-- Copyright (C) 2014 Tristan Gingold
+--
+-- GHDL is free software; you can redistribute it and/or modify it under
+-- the terms of the GNU General Public License as published by the Free
+-- Software Foundation; either version 2, or (at your option) any later
+-- version.
+--
+-- GHDL is distributed in the hope that it will be useful, but WITHOUT ANY
+-- WARRANTY; without even the implied warranty of MERCHANTABILITY or
+-- FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+-- for more details.
+--
+-- You should have received a copy of the GNU General Public License
+-- along with GCC; see the file COPYING. If not, write to the Free
+-- Software Foundation, 59 Temple Place - Suite 330, Boston, MA
+-- 02111-1307, USA.
+--
+-- As a special exception, if other files instantiate generics from this
+-- unit, or you link this unit with other files to produce an executable,
+-- this unit does not by itself cause the resulting executable to be
+-- covered by the GNU General Public License. This exception does not
+-- however invalidate any other reasons why the executable file might be
+-- covered by the GNU Public License.
+
+with Grt.Types; use Grt.Types;
+
+package Grt.Std_Logic_1164 is
+ type Std_Ulogic is ('U', 'X', '0', '1', 'Z', 'W','L', 'H', '-');
+
+ type Stdlogic_Table_2d is array (Std_Ulogic, Std_Ulogic) of Std_Ulogic;
+ type Stdlogic_Table_1d is array (Std_Ulogic) of Std_Ulogic;
+
+ -- LRM08 9.2.3 Relational operators
+ Match_Eq_Table : constant Stdlogic_Table_2d :=
+ --UX01ZWLH-
+ ("UUUUUUUU1",
+ "UXXXXXXX1",
+ "UX10XX101",
+ "UX01XX011",
+ "UXXXXXXX1",
+ "UXXXXXXX1",
+ "UX10XX101",
+ "UX01XX011",
+ "111111111");
+
+ Match_Lt_Table : constant Stdlogic_Table_2d :=
+ --UX01ZWLH-
+ ("UUUUUUUUX",
+ "UXXXXXXXX",
+ "UX01XX01X",
+ "UX00XX00X",
+ "UXXXXXXXX",
+ "UXXXXXXXX",
+ "UX01XX01X",
+ "UX00XX00X",
+ "XXXXXXXXX");
+
+ And_Table : constant Stdlogic_Table_2d :=
+ --UX01ZWLH-
+ ("UU0UUU0UX", -- U
+ "UX0XXX0XX", -- X
+ "000000000", -- 0
+ "UX01XX01X", -- 1
+ "UX0XXX0XX", -- Z
+ "UX0XXX0XX", -- W
+ "000000000", -- L
+ "UX01XX01X", -- H
+ "UX0XXX0XX"); -- -
+
+ Or_Table : constant Stdlogic_Table_2d :=
+ --UX01ZWLH-
+ ("UUU1UUU1U", -- U
+ "UXX1XXX1X", -- X
+ "UX01XX01X", -- 0
+ "111111111", -- 1
+ "UXX1XXX1X", -- Z
+ "UXX1XXX1X", -- W
+ "UX01XX01X", -- L
+ "111111111", -- H
+ "UXX1XXX1X"); -- -
+
+ Xor_Table : constant Stdlogic_Table_2d :=
+ --UX01ZWLH-
+ ("UUUUUUUUU", -- U
+ "UXXXXXXXX", -- X
+ "UX01XX01X", -- 0
+ "UX10XX10X", -- 1
+ "UXXXXXXXX", -- Z
+ "UXXXXXXXX", -- W
+ "UX01XX01X", -- L
+ "UX10XX10X", -- H
+ "UXXXXXXXX"); -- -
+
+ Not_Table : constant Stdlogic_Table_1d := "UX10XX10X";
+
+ function Ghdl_Std_Ulogic_Match_Eq (L, R : Ghdl_E8) return Ghdl_E8;
+ function Ghdl_Std_Ulogic_Match_Ne (L, R : Ghdl_E8) return Ghdl_E8;
+ function Ghdl_Std_Ulogic_Match_Lt (L, R : Ghdl_E8) return Ghdl_E8;
+ function Ghdl_Std_Ulogic_Match_Le (L, R : Ghdl_E8) return Ghdl_E8;
+ -- For Gt and Ge, use Lt and Le with swapped parameters.
+private
+ pragma Export (C, Ghdl_Std_Ulogic_Match_Eq, "__ghdl_std_ulogic_match_eq");
+ pragma Export (C, Ghdl_Std_Ulogic_Match_Ne, "__ghdl_std_ulogic_match_ne");
+ pragma Export (C, Ghdl_Std_Ulogic_Match_Lt, "__ghdl_std_ulogic_match_lt");
+ pragma Export (C, Ghdl_Std_Ulogic_Match_Le, "__ghdl_std_ulogic_match_le");
+end Grt.Std_Logic_1164;