1 /*
   2  * Copyright (c) 2016, 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 
  26 package jdk.tools.jaotc;
  27 
  28 import java.util.HashMap;
  29 import jdk.vm.ci.hotspot.HotSpotJVMCIRuntime;
  30 
  31 /**
  32  * Constants used to mark special positions in code being installed into the code cache by Graal C++
  33  * code.
  34  */
  35 enum MarkId {
  36     VERIFIED_ENTRY("CodeInstaller::VERIFIED_ENTRY"),
  37     UNVERIFIED_ENTRY("CodeInstaller::UNVERIFIED_ENTRY"),
  38     OSR_ENTRY("CodeInstaller::OSR_ENTRY"),
  39     EXCEPTION_HANDLER_ENTRY("CodeInstaller::EXCEPTION_HANDLER_ENTRY"),
  40     DEOPT_HANDLER_ENTRY("CodeInstaller::DEOPT_HANDLER_ENTRY"),
  41     INVOKEINTERFACE("CodeInstaller::INVOKEINTERFACE"),
  42     INVOKEVIRTUAL("CodeInstaller::INVOKEVIRTUAL"),
  43     INVOKESTATIC("CodeInstaller::INVOKESTATIC"),
  44     INVOKESPECIAL("CodeInstaller::INVOKESPECIAL"),
  45     INLINE_INVOKE("CodeInstaller::INLINE_INVOKE"),
  46     POLL_NEAR("CodeInstaller::POLL_NEAR"),
  47     POLL_RETURN_NEAR("CodeInstaller::POLL_RETURN_NEAR"),
  48     POLL_FAR("CodeInstaller::POLL_FAR"),
  49     POLL_RETURN_FAR("CodeInstaller::POLL_RETURN_FAR"),
  50     CARD_TABLE_ADDRESS("CodeInstaller::CARD_TABLE_ADDRESS"),
  51     HEAP_TOP_ADDRESS("CodeInstaller::HEAP_TOP_ADDRESS"),
  52     HEAP_END_ADDRESS("CodeInstaller::HEAP_END_ADDRESS"),
  53     NARROW_KLASS_BASE_ADDRESS("CodeInstaller::NARROW_KLASS_BASE_ADDRESS"),
  54     NARROW_OOP_BASE_ADDRESS("CodeInstaller::NARROW_OOP_BASE_ADDRESS"),
  55     CRC_TABLE_ADDRESS("CodeInstaller::CRC_TABLE_ADDRESS"),
  56     LOG_OF_HEAP_REGION_GRAIN_BYTES("CodeInstaller::LOG_OF_HEAP_REGION_GRAIN_BYTES"),
  57     INLINE_CONTIGUOUS_ALLOCATION_SUPPORTED("CodeInstaller::INLINE_CONTIGUOUS_ALLOCATION_SUPPORTED");
  58 
  59     private final int value;
  60     private static HashMap<Integer, MarkId> lookup = new HashMap<Integer, MarkId>();
  61 
  62     static {
  63         for (MarkId e : values()) {
  64             lookup.put(e.value, e);
  65         }
  66     }
  67     MarkId(String name) {
  68         this.value = (int) (long) HotSpotJVMCIRuntime.runtime().getConfigStore().getConstants().get(name);
  69     }
  70 
  71     static MarkId getEnum(int value) {
  72         MarkId e = lookup.get(value);
  73         if (e == null) {
  74             throw new InternalError("Unknown enum value: " + value);
  75         }
  76         return e;
  77     }
  78 }