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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.
-
- function Ghdl_Std_Ulogic_Array_Match_Eq (L : Ghdl_Ptr;
- L_Len : Ghdl_Index_Type;
- R : Ghdl_Ptr;
- R_Len : Ghdl_Index_Type)
- return Ghdl_I32;
- function Ghdl_Std_Ulogic_Array_Match_Ne (L : Ghdl_Ptr;
- L_Len : Ghdl_Index_Type;
- R : Ghdl_Ptr;
- R_Len : Ghdl_Index_Type)
- return Ghdl_I32;
-
-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");
-
- pragma Export (C, Ghdl_Std_Ulogic_Array_Match_Eq,
- "__ghdl_std_ulogic_array_match_eq");
- pragma Export (C, Ghdl_Std_Ulogic_Array_Match_Ne,
- "__ghdl_std_ulogic_array_match_ne");
-end Grt.Std_Logic_1164;