continued clmul unit

pipelined/src/ieu/clmul.sv

@@ -0,0 +1,53 @@
+///////////////////////////////////////////
+// clmul.sv
+//
+// Written: Kevin Kim <kekim@hmc.edu> and Kip Macsai-Goren <kmacsaigoren@hmc.edu>
+// Created: 1 February 2023
+// Modified: 
+//
+// Purpose: RISC-V single bit manipulation unit (ZBS instructions)
+//
+// Documentation: RISC-V System on Chip Design Chapter ***
+// 
+// A component of the CORE-V-WALLY configurable RISC-V project.
+// 
+// Copyright (C) 2021-23 Harvey Mudd College & Oklahoma State University
+//
+// SPDX-License-Identifier: Apache-2.0 WITH SHL-2.1
+//
+// Licensed under the Solderpad Hardware License v 2.1 (the “License”); you may not use this file 
+// except in compliance with the License, or, at your option, the Apache License version 2.0. You 
+// may obtain a copy of the License at
+//
+// https://solderpad.org/licenses/SHL-2.1/
+//
+// Unless required by applicable law or agreed to in writing, any work distributed under the 
+// License is distributed on an “AS IS” BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 
+// either express or implied. See the License for the specific language governing permissions 
+// and limitations under the License.
+////////////////////////////////////////////////////////////////////////////////////////////////
+
+`include "wally-config.vh"
+
+module clmul #(parameter WIDTH=32) (
+  input  logic [WIDTH-1:0] A, B,       // Operands
+  output logic [WIDTH-1:0] Result);     // ZBS result
+  //output logic [WIDTH-1:0] Sum);       // Sum of operands
+
+  logic [WIDTH-1] pp [WIDTH-1]; //partial AND products
+  logic [WIDTH-1] sop; //sum of partial products
+  genvar i;
+  for (i=0; i<WIDTH;i+=WIDTH) begin:forloop //loop fills partial product array
+    for
+    //fill partials products here
+  end
+
+  genvar i;
+  for (i=1;x<WIDTH;i++) begin:outer 
+    assign result[x] = ^pp[i][i:0]
+  end
+
+
+endmodule
+
+