1 /*
   2  * Copyright (c) 2018, 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.OptionType;
  31 
  32 public enum SpeculativeExecutionAttacksMitigations {
  33     None,
  34     AllTargets,
  35     GuardTargets,
  36     NonDeoptGuardTargets;
  37 
  38     public static class Options {
  39         // @formatter:off
  40         @Option(help = "Select a strategy to mitigate speculative execution attacks (e.g., SPECTRE)", type = OptionType.User)
  41         public static final EnumOptionKey<SpeculativeExecutionAttacksMitigations> MitigateSpeculativeExecutionAttacks = new EnumOptionKey<>(None);
  42         @Option(help = "Use index masking after bounds check to mitigate speculative execution attacks", type = OptionType.User)
  43         public static final OptionKey<Boolean> UseIndexMasking = new OptionKey<>(false);
  44         // @formatter:on
  45     }
  46 }