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/*
 * Copyright (c) 2023, 2023, Oracle and/or its affiliates. All rights reserved.
 * Copyright (c) 2023, 2023, Red Hat Inc. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code 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
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

package com.oracle.objectfile.elf.dwarf.constants;

/**
 * Standard line section opcodes defined by Dwarf 4.
 */
public enum DwarfLineOpcode {
    /*
     * 0 can be inserted as a prefix for extended opcodes.
     */
    DW_LNS_extended_prefix((byte) 0),
    /*
     * Append current state as matrix row 0 args.
     */
    DW_LNS_copy((byte) 1),
    /*
     * Increment address 1 uleb arg.
     */
    DW_LNS_advance_pc((byte) 2),
    /*
     * Increment line 1 sleb arg.
     */
    DW_LNS_advance_line((byte) 3),
    /*
     * Set file 1 uleb arg.
     */
    DW_LNS_set_file((byte) 4),
    /*
     * sSet column 1 uleb arg.
     */
    DW_LNS_set_column((byte) 5),
    /*
     * Flip is_stmt 0 args.
     */
    DW_LNS_negate_stmt((byte) 6),
    /*
     * Set end sequence and copy row 0 args.
     */
    DW_LNS_set_basic_block((byte) 7),
    /*
     * Increment address as per opcode 255 0 args.
     */
    DW_LNS_const_add_pc((byte) 8),
    /*
     * Increment address 1 ushort arg.
     */
    DW_LNS_fixed_advance_pc((byte) 9),
    /*
     * Increment address 1 ushort arg.
     */
    @SuppressWarnings("unused")
    DW_LNS_set_prologue_end((byte) 10),
    /*
     * Increment address 1 ushort arg.
     */
    @SuppressWarnings("unused")
    DW_LNS_set_epilogue_begin((byte) 11),
    /*
     * Extended line section opcodes defined by DWARF 2.
     */
    /*
     * There is no extended opcode 0.
     */
    @SuppressWarnings("unused")
    DW_LNE_undefined((byte) 0),
    /*
     * End sequence of addresses.
     */
    DW_LNE_end_sequence((byte) 1),
    /*
     * Set address as explicit long argument.
     */
    DW_LNE_set_address((byte) 2),
    /*
     * Set file as explicit string argument.
     */
    DW_LNE_define_file((byte) 3);

    private final byte value;

    DwarfLineOpcode(byte b) {
        value = b;
    }

    public byte value() {
        return value;
    }
}