001/*
002 * Copyright (c) 2012, 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.amd64.*;
026import jdk.internal.jvmci.hotspot.*;
027import jdk.internal.jvmci.meta.*;
028
029import com.oracle.graal.asm.amd64.*;
030import com.oracle.graal.lir.*;
031import com.oracle.graal.lir.amd64.AMD64Call.DirectCallOp;
032import com.oracle.graal.lir.asm.*;
033import com.oracle.graal.nodes.CallTargetNode.InvokeKind;
034
035/**
036 * A direct call that complies with the conventions for such calls in HotSpot. In particular, for
037 * calls using an inline cache, a MOVE instruction is emitted just prior to the aligned direct call.
038 */
039@Opcode("CALL_DIRECT")
040final class AMD64HotspotDirectVirtualCallOp extends DirectCallOp {
041    public static final LIRInstructionClass<AMD64HotspotDirectVirtualCallOp> TYPE = LIRInstructionClass.create(AMD64HotspotDirectVirtualCallOp.class);
042
043    private final InvokeKind invokeKind;
044    private final HotSpotVMConfig config;
045
046    AMD64HotspotDirectVirtualCallOp(ResolvedJavaMethod target, Value result, Value[] parameters, Value[] temps, LIRFrameState state, InvokeKind invokeKind, HotSpotVMConfig config) {
047        super(TYPE, target, result, parameters, temps, state);
048        this.invokeKind = invokeKind;
049        this.config = config;
050        assert invokeKind.isIndirect();
051    }
052
053    @Override
054    public void emitCode(CompilationResultBuilder crb, AMD64MacroAssembler masm) {
055        // The mark for an invocation that uses an inline cache must be placed at the
056        // instruction that loads the Klass from the inline cache.
057        crb.recordMark(invokeKind == InvokeKind.Virtual ? config.MARKID_INVOKEVIRTUAL : config.MARKID_INVOKEINTERFACE);
058        // This must be emitted exactly like this to ensure it's patchable
059        masm.movq(AMD64.rax, config.nonOopBits);
060        super.emitCode(crb, masm);
061    }
062}