001/*
002 * Copyright (c) 2012, 2015, Oracle and/or its affiliates. All rights reserved.
003 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
004 *
005 * This code is free software; you can redistribute it and/or modify it
006 * under the terms of the GNU General Public License version 2 only, as
007 * published by the Free Software Foundation.
008 *
009 * This code is distributed in the hope that it will be useful, but WITHOUT
010 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
011 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
012 * version 2 for more details (a copy is included in the LICENSE file that
013 * accompanied this code).
014 *
015 * You should have received a copy of the GNU General Public License version
016 * 2 along with this work; if not, write to the Free Software Foundation,
017 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
018 *
019 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
020 * or visit www.oracle.com if you need additional information or have any
021 * questions.
022 */
023package com.oracle.graal.hotspot.amd64;
024
025import jdk.internal.jvmci.code.*;
026
027import com.oracle.graal.asm.amd64.*;
028import com.oracle.graal.lir.*;
029import com.oracle.graal.lir.amd64.*;
030import com.oracle.graal.lir.asm.*;
031
032@Opcode("CRUNTIME_CALL_EPILOGUE")
033final class AMD64HotSpotCRuntimeCallEpilogueOp extends AMD64LIRInstruction {
034    public static final LIRInstructionClass<AMD64HotSpotCRuntimeCallEpilogueOp> TYPE = LIRInstructionClass.create(AMD64HotSpotCRuntimeCallEpilogueOp.class);
035
036    private final int threadLastJavaSpOffset;
037    private final int threadLastJavaFpOffset;
038    private final Register thread;
039
040    public AMD64HotSpotCRuntimeCallEpilogueOp(int threadLastJavaSpOffset, int threadLastJavaFpOffset, Register thread) {
041        super(TYPE);
042        this.threadLastJavaSpOffset = threadLastJavaSpOffset;
043        this.threadLastJavaFpOffset = threadLastJavaFpOffset;
044        this.thread = thread;
045    }
046
047    @Override
048    public void emitCode(CompilationResultBuilder crb, AMD64MacroAssembler masm) {
049        // reset last Java frame:
050        masm.movslq(new AMD64Address(thread, threadLastJavaSpOffset), 0);
051        masm.movslq(new AMD64Address(thread, threadLastJavaFpOffset), 0);
052    }
053}