1 /* 2 * Copyright (c) 2013, 2016, 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.aarch64; 24 25 import static jdk.vm.ci.aarch64.AArch64.zr; 26 27 import org.graalvm.compiler.asm.aarch64.AArch64MacroAssembler; 28 import org.graalvm.compiler.lir.LIRInstructionClass; 29 import org.graalvm.compiler.lir.Opcode; 30 import org.graalvm.compiler.lir.aarch64.AArch64LIRInstruction; 31 import org.graalvm.compiler.lir.asm.CompilationResultBuilder; 32 33 import jdk.vm.ci.code.Register; 34 35 @Opcode("CRUNTIME_CALL_EPILOGUE") 36 public class AArch64HotSpotCRuntimeCallEpilogueOp extends AArch64LIRInstruction { 37 public static final LIRInstructionClass<AArch64HotSpotCRuntimeCallEpilogueOp> TYPE = LIRInstructionClass.create(AArch64HotSpotCRuntimeCallEpilogueOp.class); 38 39 private final int threadLastJavaSpOffset; 40 private final int threadLastJavaFpOffset; 41 private final Register thread; 42 43 public AArch64HotSpotCRuntimeCallEpilogueOp(int threadLastJavaSpOffset, int threadLastJavaFpOffset, Register thread) { 44 super(TYPE); 45 this.threadLastJavaSpOffset = threadLastJavaSpOffset; 46 this.threadLastJavaFpOffset = threadLastJavaFpOffset; 47 this.thread = thread; 48 } 49 50 @Override 51 public void emitCode(CompilationResultBuilder crb, AArch64MacroAssembler masm) { 52 // Reset last Java frame: 53 masm.str(64, zr, masm.makeAddress(thread, threadLastJavaSpOffset, 8)); 54 masm.str(64, zr, masm.makeAddress(thread, threadLastJavaFpOffset, 8)); 55 } 56 }