1 /* 2 * Copyright (c) 2012, 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.amd64; 24 25 import org.graalvm.compiler.asm.amd64.AMD64Address; 26 import org.graalvm.compiler.asm.amd64.AMD64MacroAssembler; 27 import org.graalvm.compiler.lir.LIRInstructionClass; 28 import org.graalvm.compiler.lir.Opcode; 29 import org.graalvm.compiler.lir.amd64.AMD64LIRInstruction; 30 import org.graalvm.compiler.lir.asm.CompilationResultBuilder; 31 32 import jdk.vm.ci.code.Register; 33 34 @Opcode("CRUNTIME_CALL_EPILOGUE") 35 final class AMD64HotSpotCRuntimeCallEpilogueOp extends AMD64LIRInstruction { 36 public static final LIRInstructionClass<AMD64HotSpotCRuntimeCallEpilogueOp> TYPE = LIRInstructionClass.create(AMD64HotSpotCRuntimeCallEpilogueOp.class); 37 38 private final int threadLastJavaSpOffset; 39 private final int threadLastJavaFpOffset; 40 private final int threadLastJavaPcOffset; 41 private final Register thread; 42 43 AMD64HotSpotCRuntimeCallEpilogueOp(int threadLastJavaSpOffset, int threadLastJavaFpOffset, int threadLastJavaPcOffset, Register thread) { 44 super(TYPE); 45 this.threadLastJavaSpOffset = threadLastJavaSpOffset; 46 this.threadLastJavaFpOffset = threadLastJavaFpOffset; 47 this.threadLastJavaPcOffset = threadLastJavaPcOffset; 48 this.thread = thread; 49 } 50 51 @Override 52 public void emitCode(CompilationResultBuilder crb, AMD64MacroAssembler masm) { 53 // reset last Java frame: 54 masm.movslq(new AMD64Address(thread, threadLastJavaSpOffset), 0); 55 masm.movslq(new AMD64Address(thread, threadLastJavaFpOffset), 0); 56 masm.movslq(new AMD64Address(thread, threadLastJavaPcOffset), 0); 57 } 58 }