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 */
23package org.graalvm.compiler.hotspot.aarch64;
24
25import static jdk.vm.ci.hotspot.aarch64.AArch64HotSpotRegisterConfig.inlineCacheRegister;
26
27import org.graalvm.compiler.asm.aarch64.AArch64MacroAssembler;
28import org.graalvm.compiler.hotspot.GraalHotSpotVMConfig;
29import org.graalvm.compiler.lir.LIRFrameState;
30import org.graalvm.compiler.lir.LIRInstructionClass;
31import org.graalvm.compiler.lir.Opcode;
32import org.graalvm.compiler.lir.aarch64.AArch64Call.DirectCallOp;
33import org.graalvm.compiler.lir.asm.CompilationResultBuilder;
34import org.graalvm.compiler.nodes.CallTargetNode.InvokeKind;
35
36import jdk.vm.ci.meta.ResolvedJavaMethod;
37import jdk.vm.ci.meta.Value;
38
39/**
40 * A direct call that complies with the conventions for such calls in HotSpot. In particular, for
41 * calls using an inline cache, a MOVE instruction is emitted just prior to the aligned direct call.
42 */
43@Opcode("CALL_DIRECT")
44final class AArch64HotSpotDirectVirtualCallOp extends DirectCallOp {
45
46    public static final LIRInstructionClass<AArch64HotSpotDirectVirtualCallOp> TYPE = LIRInstructionClass.create(AArch64HotSpotDirectVirtualCallOp.class);
47
48    private final InvokeKind invokeKind;
49    private final GraalHotSpotVMConfig config;
50
51    AArch64HotSpotDirectVirtualCallOp(ResolvedJavaMethod target, Value result, Value[] parameters, Value[] temps, LIRFrameState state, InvokeKind invokeKind, GraalHotSpotVMConfig config) {
52        super(TYPE, target, result, parameters, temps, state);
53        assert invokeKind.isIndirect();
54        this.invokeKind = invokeKind;
55        this.config = config;
56    }
57
58    @Override
59    public void emitCode(CompilationResultBuilder crb, AArch64MacroAssembler masm) {
60        // The mark for an invocation that uses an inline cache must be placed at the
61        // instruction that loads the Klass from the inline cache.
62        // For the first invocation this is set to a bitpattern that is guaranteed to never be a
63        // valid object which causes the called function to call a handler that installs the
64        // correct inline cache value here.
65        crb.recordMark(invokeKind == InvokeKind.Virtual ? config.MARKID_INVOKEVIRTUAL : config.MARKID_INVOKEINTERFACE);
66        masm.movNativeAddress(inlineCacheRegister, config.nonOopBits);
67        super.emitCode(crb, masm);
68    }
69}
70