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.lir.aarch64;
  24 
  25 import org.graalvm.compiler.asm.aarch64.AArch64MacroAssembler;
  26 import org.graalvm.compiler.lir.LIRInstructionClass;
  27 import org.graalvm.compiler.lir.Opcode;
  28 import org.graalvm.compiler.lir.asm.CompilationResultBuilder;
  29 
  30 /**
  31  * Emits a pause.
  32  */
  33 @Opcode("PAUSE")
  34 public final class AArch64PauseOp extends AArch64LIRInstruction {
  35     public static final LIRInstructionClass<AArch64PauseOp> TYPE = LIRInstructionClass.create(AArch64PauseOp.class);
  36 
  37     public AArch64PauseOp() {
  38         super(TYPE);
  39     }
  40 
  41     @Override
  42     public void emitCode(CompilationResultBuilder crb, AArch64MacroAssembler masm) {
  43         masm.pause();
  44     }
  45 }