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-- Canonicalization pass
-- Copyright (C) 2002, 2003, 2004, 2005 Tristan Gingold
--
-- This program 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 of the License, or
-- (at your option) any later version.
--
-- This program 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 this program. If not, see <gnu.org/licenses>.
with Vhdl.Nodes; use Vhdl.Nodes;
package Vhdl.Canon is
-- If true, a label will be added to unlabelled concurrent statements.
Canon_Flag_Add_Labels : Boolean := False;
-- If true, canon sequentials statements (processes and subprograms).
Canon_Flag_Sequentials_Stmts : Boolean := False;
-- If true, canon concurrent statements: transform them into processes.
Canon_Flag_Concurrent_Stmts : Boolean := True;
-- If true, canon configuration.
Canon_Flag_Configurations : Boolean := True;
-- If true, canon associations (reorder, add open associations, signal
-- association with a non globally expression).
Canon_Flag_Associations : Boolean := True;
-- If true, canon lists in specifications.
Canon_Flag_Specification_Lists : Boolean := True;
-- If true, canon expressions.
Canon_Flag_Expressions : Boolean := False;
-- If true, replace 'all' sensitivity list by the explicit list
-- (If true, Canon_Flag_Sequentials_Stmts must be true)
Canon_Flag_All_Sensitivity : Boolean := False;
-- Add suspend state variables and statements.
Canon_Flag_Add_Suspend_State : Boolean := False;
-- Do canonicalization:
-- Transforms concurrent statements into sensitized process statements
-- (all but component instanciation and block).
-- This computes sensivity list.
--
-- Association list are completed:
-- * Formal are added.
-- * association are created for formal not associated (actual is open).
-- * an association is created (for block header only).
procedure Canonicalize (Unit: Iir_Design_Unit);
-- Create a default configuration declaration for architecture ARCH.
function Create_Default_Configuration_Declaration
(Arch : Iir_Architecture_Body)
return Iir_Design_Unit;
-- Canonicalize a subprogram call.
procedure Canon_Subprogram_Call (Call : Iir);
-- Canon on expressions, mainly for function calls.
procedure Canon_Expression (Expr: Iir);
-- Canon a conditional variable assignment into a conditional statement.
function Canon_Conditional_Variable_Assignment_Statement (Stmt : Iir)
return Iir;
-- Canon a conditional signal assignment into a conditional statement.
function Canon_Conditional_Signal_Assignment_Statement (Stmt : Iir)
return Iir;
-- Compute the sensivity list of EXPR and add it to SENSIVITY_LIST.
-- If IS_TARGET is true, the longest static prefix of the signal name
-- is not added to the sensitivity list, but other static prefix (such
-- as indexes of an indexed name) are added.
procedure Canon_Extract_Sensitivity_Expression
(Expr: Iir; Sensitivity_List: Iir_List; Is_Target: Boolean := False);
-- Extract sensitivity of WAVEFORM.
procedure Extract_Waveform_Sensitivity
(Waveform : Iir; Sensitivity_List: Iir_List);
-- Likewise, but for all expressions appearing in statements CHAIN.
procedure Canon_Extract_Sensitivity_Sequential_Statement_Chain
(Chain : Iir; List : Iir_List);
-- Compute the sensitivity list of all-sensitized process PROC.
-- Used for vhdl 08.
function Canon_Extract_Sensitivity_Process
(Proc : Iir_Sensitized_Process_Statement) return Iir_List;
-- For a concurrent or sequential conditional signal assignment.
procedure Canon_Extract_Sensitivity_Conditional_Signal_Assignment
(Stmt : Iir; List : Iir_List);
-- For a concurrent or sequential simple signal assignment.
procedure Canon_Extract_Sensitivity_Simple_Signal_Assignment
(Stmt : Iir; List : Iir_List);
-- For a concurrent selected signal statement.
procedure Canon_Extract_Sensitivity_Selected_Signal_Assignment
(Stmt : Iir; List : Iir_List);
-- For a concurrent or sequential simple assertion statement.
procedure Canon_Extract_Sensitivity_Assertion_Statement
(Stmt : Iir; List : Iir_List);
-- For a concurrent break statement (AMS).
procedure Canon_Extract_Sensitivity_Break_Statement
(Stmt : Iir; Sensitivity_List : Iir_List);
-- For a procedure call.
procedure Canon_Extract_Sensitivity_Procedure_Call
(Call : Iir; Sensitivity_List : Iir_List);
end Vhdl.Canon;
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