1/*
2 * Copyright (c) 2012, 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 */
23package org.graalvm.compiler.hotspot.amd64;
24
25import org.graalvm.compiler.asm.amd64.AMD64MacroAssembler;
26import org.graalvm.compiler.hotspot.GraalHotSpotVMConfig;
27import org.graalvm.compiler.lir.LIRFrameState;
28import org.graalvm.compiler.lir.LIRInstructionClass;
29import org.graalvm.compiler.lir.Opcode;
30import org.graalvm.compiler.lir.amd64.AMD64Call.DirectCallOp;
31import org.graalvm.compiler.lir.asm.CompilationResultBuilder;
32import org.graalvm.compiler.nodes.CallTargetNode.InvokeKind;
33
34import jdk.vm.ci.amd64.AMD64;
35import jdk.vm.ci.meta.ResolvedJavaMethod;
36import jdk.vm.ci.meta.Value;
37
38/**
39 * A direct call that complies with the conventions for such calls in HotSpot. In particular, for
40 * calls using an inline cache, a MOVE instruction is emitted just prior to the aligned direct call.
41 */
42@Opcode("CALL_DIRECT")
43final class AMD64HotspotDirectVirtualCallOp extends DirectCallOp {
44    public static final LIRInstructionClass<AMD64HotspotDirectVirtualCallOp> TYPE = LIRInstructionClass.create(AMD64HotspotDirectVirtualCallOp.class);
45
46    private final InvokeKind invokeKind;
47    private final GraalHotSpotVMConfig config;
48
49    AMD64HotspotDirectVirtualCallOp(ResolvedJavaMethod target, Value result, Value[] parameters, Value[] temps, LIRFrameState state, InvokeKind invokeKind, GraalHotSpotVMConfig config) {
50        super(TYPE, target, result, parameters, temps, state);
51        this.invokeKind = invokeKind;
52        this.config = config;
53        assert invokeKind.isIndirect();
54    }
55
56    @Override
57    public void emitCode(CompilationResultBuilder crb, AMD64MacroAssembler masm) {
58        // The mark for an invocation that uses an inline cache must be placed at the
59        // instruction that loads the Klass from the inline cache.
60        crb.recordMark(invokeKind == InvokeKind.Virtual ? config.MARKID_INVOKEVIRTUAL : config.MARKID_INVOKEINTERFACE);
61        // This must be emitted exactly like this to ensure it's patchable
62        masm.movq(AMD64.rax, config.nonOopBits);
63        super.emitCode(crb, masm);
64    }
65}
66