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-- Internal node type and operations.
-- Copyright (C) 2002, 2003, 2004, 2005 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 GHDL; see the file COPYING. If not, write to the Free
-- Software Foundation, 59 Temple Place - Suite 330, Boston, MA
-- 02111-1307, USA.
with Types; use Types;
package Nodes is
type Node_Type is new Int32;
for Node_Type'Size use 32;
Null_Node : constant Node_Type := 0;
Error_Node : constant Node_Type := 1;
-- A simple type that needs only 2 bits.
type Bit2_Type is range 0 .. 2 ** 2 - 1;
type Bit3_Type is range 0 .. 2 ** 3 - 1;
type Kind_Type is range 0 .. 255;
-- Format of a node.
type Format_Type is
(
Format_Short,
Format_Medium,
Format_Fp,
Format_Int
);
-- Future layout: (rem)
-- Format: 0 bits 32
-- Nkind: 16 bits 16
-- Flags: 8*1 bits 8
-- State: 2*2 bits 4
-- Odigit is to be removed.
-- Future layout (2):(rem)
-- Format: 2 bits 30
-- Nkind: 8 bits 22 (vhdl: 216 nodes)
-- Flags: 8*1 bits 14
-- State: 2*2 bits 10
-- Lang: 2 bits 8
-- Odigit: 1*3 bits 5
-- Common fields are:
-- Flag1 : Boolean
-- Flag2 : Boolean
-- Flag3 : Boolean
-- Flag4 : Boolean
-- Flag5 : Boolean
-- Flag6 : Boolean
-- Flag7 : Boolean
-- Flag8 : Boolean
-- Flag9 : Boolean
-- Flag10 : Boolean
-- Nkind : Kind_Type
-- State1 : Bit2_Type
-- State2 : Bit2_Type
-- Location : Location_Type
-- Field0 : Iir
-- Field1 : Iir
-- Field2 : Iir
-- Field3 : Iir
-- Fields of Format_Fp:
-- Fp64 : Iir_Fp64
-- Fields of Format_Int:
-- Int64 : Iir_Int64
-- Fields of Format_Short:
-- Field4 : Iir
-- Field5 : Iir
-- Fields of Format_Medium:
-- Odigit1 : Bit3_Type
-- Odigit2 : Bit3_Type (odigit1)
-- State3 : Bit2_Type
-- State4 : Bit2_Type
-- Field4 : Iir
-- Field5 : Iir
-- Field6 : Iir (location)
-- Field7 : Iir (field0)
-- Field8 : Iir (field1)
-- Field9 : Iir (field2)
-- Field10 : Iir (field3)
-- Field11 : Iir (field4)
-- Field12 : Iir (field5)
function Create_Node (Format : Format_Type) return Node_Type;
procedure Free_Node (N : Node_Type);
function Next_Node (N : Node_Type) return Node_Type;
function Get_Nkind (N : Node_Type) return Kind_Type;
pragma Inline (Get_Nkind);
procedure Set_Nkind (N : Node_Type; Kind : Kind_Type);
pragma Inline (Set_Nkind);
function Get_Location (N: Node_Type) return Location_Type;
pragma Inline (Get_Location);
procedure Set_Location (N : Node_Type; Location: Location_Type);
pragma Inline (Set_Location);
function Get_Field0 (N : Node_Type) return Node_Type;
pragma Inline (Get_Field0);
procedure Set_Field0 (N : Node_Type; V : Node_Type);
pragma Inline (Set_Field0);
function Get_Field1 (N : Node_Type) return Node_Type;
pragma Inline (Get_Field1);
procedure Set_Field1 (N : Node_Type; V : Node_Type);
pragma Inline (Set_Field1);
function Get_Field2 (N : Node_Type) return Node_Type;
pragma Inline (Get_Field2);
procedure Set_Field2 (N : Node_Type; V : Node_Type);
pragma Inline (Set_Field2);
function Get_Field3 (N : Node_Type) return Node_Type;
pragma Inline (Get_Field3);
procedure Set_Field3 (N : Node_Type; V : Node_Type);
pragma Inline (Set_Field3);
function Get_Field4 (N : Node_Type) return Node_Type;
pragma Inline (Get_Field4);
procedure Set_Field4 (N : Node_Type; V : Node_Type);
pragma Inline (Set_Field4);
function Get_Field5 (N : Node_Type) return Node_Type;
pragma Inline (Get_Field5);
procedure Set_Field5 (N : Node_Type; V : Node_Type);
pragma Inline (Set_Field5);
function Get_Field6 (N: Node_Type) return Node_Type;
pragma Inline (Get_Field6);
procedure Set_Field6 (N: Node_Type; Val: Node_Type);
pragma Inline (Set_Field6);
function Get_Field7 (N: Node_Type) return Node_Type;
pragma Inline (Get_Field7);
procedure Set_Field7 (N: Node_Type; Val: Node_Type);
pragma Inline (Set_Field7);
function Get_Field8 (N: Node_Type) return Node_Type;
pragma Inline (Get_Field8);
procedure Set_Field8 (N: Node_Type; Val: Node_Type);
pragma Inline (Set_Field8);
function Get_Field9 (N: Node_Type) return Node_Type;
pragma Inline (Get_Field9);
procedure Set_Field9 (N: Node_Type; Val: Node_Type);
pragma Inline (Set_Field9);
function Get_Field10 (N: Node_Type) return Node_Type;
pragma Inline (Get_Field10);
procedure Set_Field10 (N: Node_Type; Val: Node_Type);
pragma Inline (Set_Field10);
function Get_Field11 (N: Node_Type) return Node_Type;
pragma Inline (Get_Field11);
procedure Set_Field11 (N: Node_Type; Val: Node_Type);
pragma Inline (Set_Field11);
function Get_Field12 (N: Node_Type) return Node_Type;
pragma Inline (Get_Field12);
procedure Set_Field12 (N: Node_Type; Val: Node_Type);
pragma Inline (Set_Field12);
function Get_Flag1 (N : Node_Type) return Boolean;
pragma Inline (Get_Flag1);
procedure Set_Flag1 (N : Node_Type; V : Boolean);
pragma Inline (Set_Flag1);
function Get_Flag2 (N : Node_Type) return Boolean;
pragma Inline (Get_Flag2);
procedure Set_Flag2 (N : Node_Type; V : Boolean);
pragma Inline (Set_Flag2);
function Get_Flag3 (N : Node_Type) return Boolean;
pragma Inline (Get_Flag3);
procedure Set_Flag3 (N : Node_Type; V : Boolean);
pragma Inline (Set_Flag3);
function Get_Flag4 (N : Node_Type) return Boolean;
pragma Inline (Get_Flag4);
procedure Set_Flag4 (N : Node_Type; V : Boolean);
pragma Inline (Set_Flag4);
function Get_Flag5 (N : Node_Type) return Boolean;
pragma Inline (Get_Flag5);
procedure Set_Flag5 (N : Node_Type; V : Boolean);
pragma Inline (Set_Flag5);
function Get_Flag6 (N : Node_Type) return Boolean;
pragma Inline (Get_Flag6);
procedure Set_Flag6 (N : Node_Type; V : Boolean);
pragma Inline (Set_Flag6);
function Get_Flag7 (N : Node_Type) return Boolean;
pragma Inline (Get_Flag7);
procedure Set_Flag7 (N : Node_Type; V : Boolean);
pragma Inline (Set_Flag7);
function Get_Flag8 (N : Node_Type) return Boolean;
pragma Inline (Get_Flag8);
procedure Set_Flag8 (N : Node_Type; V : Boolean);
pragma Inline (Set_Flag8);
function Get_Flag9 (N : Node_Type) return Boolean;
pragma Inline (Get_Flag9);
procedure Set_Flag9 (N : Node_Type; V : Boolean);
pragma Inline (Set_Flag9);
function Get_Flag10 (N : Node_Type) return Boolean;
pragma Inline (Get_Flag10);
procedure Set_Flag10 (N : Node_Type; V : Boolean);
pragma Inline (Set_Flag10);
function Get_State1 (N : Node_Type) return Bit2_Type;
pragma Inline (Get_State1);
procedure Set_State1 (N : Node_Type; V : Bit2_Type);
pragma Inline (Set_State1);
function Get_State2 (N : Node_Type) return Bit2_Type;
pragma Inline (Get_State2);
procedure Set_State2 (N : Node_Type; V : Bit2_Type);
pragma Inline (Set_State2);
function Get_State3 (N : Node_Type) return Bit2_Type;
pragma Inline (Get_State3);
procedure Set_State3 (N : Node_Type; V : Bit2_Type);
pragma Inline (Set_State3);
function Get_State4 (N : Node_Type) return Bit2_Type;
pragma Inline (Get_State4);
procedure Set_State4 (N : Node_Type; V : Bit2_Type);
pragma Inline (Set_State4);
function Get_Odigit1 (N : Node_Type) return Bit3_Type;
pragma Inline (Get_Odigit1);
procedure Set_Odigit1 (N : Node_Type; V : Bit3_Type);
pragma Inline (Set_Odigit1);
function Get_Odigit2 (N : Node_Type) return Bit3_Type;
pragma Inline (Get_Odigit2);
procedure Set_Odigit2 (N : Node_Type; V : Bit3_Type);
pragma Inline (Set_Odigit2);
function Get_Fp64 (N : Node_Type) return Iir_Fp64;
pragma Inline (Get_Fp64);
procedure Set_Fp64 (N : Node_Type; V : Iir_Fp64);
pragma Inline (Set_Fp64);
function Get_Int64 (N : Node_Type) return Iir_Int64;
pragma Inline (Get_Int64);
procedure Set_Int64 (N : Node_Type; V : Iir_Int64);
pragma Inline (Set_Int64);
-- Get the last node allocated.
function Get_Last_Node return Node_Type;
pragma Inline (Get_Last_Node);
-- Free all and reinit.
procedure Initialize;
private
type Node_Record (Format : Format_Type := Format_Short) is record
Flag1 : Boolean := False;
Flag2 : Boolean := False;
Flag3 : Boolean := False;
Flag4 : Boolean := False;
Flag5 : Boolean := False;
Flag6 : Boolean := False;
-- Kind field use 8 bits.
-- So, on 32 bits systems, there are 24 bits left.
-- + 8 (8 * 1)
-- + 10 (5 * 2)
-- + 6 (2 * 3)
-- = 24
Kind : Kind_Type;
State1 : Bit2_Type := 0;
State2 : Bit2_Type := 0;
Flag7 : Boolean := False;
Flag8 : Boolean := False;
Flag9 : Boolean := False;
Flag10 : Boolean := False;
Flag11 : Boolean := False;
Flag12 : Boolean := False;
Odigit1 : Bit3_Type := 0;
Unused_Odigit2 : Bit3_Type := 0;
-- Location.
Location: Location_Type := Location_Nil;
Field0 : Node_Type := Null_Node;
Field1: Node_Type := Null_Node;
Field2: Node_Type := Null_Node;
Field3: Node_Type := Null_Node;
case Format is
when Format_Short
| Format_Medium =>
Field4: Node_Type := Null_Node;
Field5: Node_Type := Null_Node;
when Format_Fp =>
Fp64 : Iir_Fp64;
when Format_Int =>
Int64 : Iir_Int64;
end case;
end record;
pragma Pack (Node_Record);
for Node_Record'Size use 8*32;
for Node_Record'Alignment use 4;
end Nodes;
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