1 /*
   2  * Copyright (c) 2015, 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 package org.graalvm.compiler.hotspot.amd64;
  24 
  25 import static org.graalvm.compiler.core.common.GraalOptions.GeneratePIC;
  26 import static jdk.vm.ci.code.ValueUtil.asRegister;
  27 import jdk.vm.ci.meta.AllocatableValue;
  28 
  29 import org.graalvm.compiler.asm.amd64.AMD64MacroAssembler;
  30 import org.graalvm.compiler.debug.GraalError;
  31 import org.graalvm.compiler.lir.LIRInstructionClass;
  32 import org.graalvm.compiler.lir.amd64.AMD64LIRInstruction;
  33 import org.graalvm.compiler.lir.asm.CompilationResultBuilder;
  34 
  35 public final class AMD64HotSpotLoadConfigValueOp extends AMD64LIRInstruction {
  36 
  37     public static final LIRInstructionClass<AMD64HotSpotLoadConfigValueOp> TYPE = LIRInstructionClass.create(AMD64HotSpotLoadConfigValueOp.class);
  38 
  39     @Def({OperandFlag.REG}) protected AllocatableValue result;
  40     private final int markId;
  41 
  42     public AMD64HotSpotLoadConfigValueOp(int markId, AllocatableValue result) {
  43         super(TYPE);
  44         this.result = result;
  45         this.markId = markId;
  46     }
  47 
  48     @Override
  49     public void emitCode(CompilationResultBuilder crb, AMD64MacroAssembler masm) {
  50         if (GeneratePIC.getValue()) {
  51             masm.movq(asRegister(result), masm.getPlaceholder(-1));
  52         } else {
  53             throw GraalError.unimplemented();
  54         }
  55         crb.recordMark(markId);
  56     }
  57 
  58 }