1 /*
   2  * Copyright (c) 2018, 2019, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 
  25 package org.graalvm.compiler.core.common;
  26 
  27 import org.graalvm.compiler.options.EnumOptionKey;
  28 import org.graalvm.compiler.options.Option;
  29 import org.graalvm.compiler.options.OptionKey;
  30 import org.graalvm.compiler.options.OptionStability;
  31 import org.graalvm.compiler.options.OptionType;
  32 
  33 public enum SpeculativeExecutionAttacksMitigations {
  34     None,
  35     AllTargets,
  36     GuardTargets,
  37     NonDeoptGuardTargets;
  38 
  39     public static class Options {
  40         // @formatter:off
  41         @Option(help = "file:doc-files/MitigateSpeculativeExecutionAttacksHelp.txt")
  42         public static final EnumOptionKey<SpeculativeExecutionAttacksMitigations> MitigateSpeculativeExecutionAttacks = new EnumOptionKey<>(None);
  43         @Option(help = "Use index masking after bounds check to mitigate speculative execution attacks.", type = OptionType.User, stability = OptionStability.STABLE)
  44         public static final OptionKey<Boolean> UseIndexMasking = new OptionKey<>(false);
  45         // @formatter:on
  46     }
  47 }