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/****************************************************************************

 * Copyright 2018 Matthew Ballance

 *

 * Licensed under the Apache License, Version 2.0 (the

 * "License"); you may not use this file except in

 * compliance with the License.  You may obtain a copy of

 * the License at

 *

 * http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in

 * writing, software 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.

 ****************************************************************************/

`define OP_ADD 3'b000

`define OP_SUB 3'b001

`define OP_AND 3'b010

`define OP_OR  3'b011

`define OP_XOR 3'b100

`define OP_SLL 3'b101

`define OP_SRL 3'b110

`define OP_SRA 3'b111

`define COMPARE_EQ  2'b00

`define COMPARE_LT  2'b01

`define COMPARE_LTU 2'b10

`define FETCH                                   4'b0000

`define DECODE                                  4'b0001

`define EXECUTE                                 4'b0010

`define CSR_1                                   4'b0011

`define CSR_2                                   4'b0100

`define MEMW                                    4'b0101

`define MEMR                                    4'b0110

`define EXCEPTION_1                             4'b0111

`define EXCEPTION_2                             4'b1000

`define SHIFT_1                                 4'b1001

`define SHIFT_2                                 4'b1010

`define CYCLE_COUNT_UPDATE_1    4'b1011

`define CYCLE_COUNT_UPDATE_2    4'b1100

`define INSTR_COUNT_UPDATE_1    4'b1101