SPARCHotSpotCRuntimeCallEpilogueOp.java revision 12657:6ef01bd40ce2 
1/*
2 * Copyright (c) 2012, 2015, 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.
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23package org.graalvm.compiler.hotspot.sparc;
24
25import static org.graalvm.compiler.lir.LIRInstruction.OperandFlag.REG;
26import static org.graalvm.compiler.lir.LIRInstruction.OperandFlag.STACK;
27import static jdk.vm.ci.sparc.SPARC.g0;
28import static jdk.vm.ci.sparc.SPARCKind.XWORD;
29
30import org.graalvm.compiler.asm.sparc.SPARCAddress;
31import org.graalvm.compiler.asm.sparc.SPARCMacroAssembler;
32import org.graalvm.compiler.core.common.LIRKind;
33import org.graalvm.compiler.lir.LIRInstructionClass;
34import org.graalvm.compiler.lir.Opcode;
35import org.graalvm.compiler.lir.asm.CompilationResultBuilder;
36import org.graalvm.compiler.lir.sparc.SPARCDelayedControlTransfer;
37import org.graalvm.compiler.lir.sparc.SPARCLIRInstruction;
38import org.graalvm.compiler.lir.sparc.SPARCMove;
39
40import jdk.vm.ci.code.Register;
41import jdk.vm.ci.meta.Value;
42
43@Opcode("CRUNTIME_CALL_EPILOGUE")
44final class SPARCHotSpotCRuntimeCallEpilogueOp extends SPARCLIRInstruction {
45    public static final LIRInstructionClass<SPARCHotSpotCRuntimeCallEpilogueOp> TYPE = LIRInstructionClass.create(SPARCHotSpotCRuntimeCallEpilogueOp.class);
46    public static final SizeEstimate SIZE = SizeEstimate.create(11);
47
48    private final int threadLastJavaSpOffset;
49    private final int threadLastJavaPcOffset;
50    private final int threadJavaFrameAnchorFlagsOffset;
51    private final Register thread;
52    @Use({REG, STACK}) protected Value threadTemp;
53
54    SPARCHotSpotCRuntimeCallEpilogueOp(int threadLastJavaSpOffset, int threadLastJavaPcOffset, int threadJavaFrameAnchorFlagsOffset, Register thread, Value threadTemp) {
55        super(TYPE, SIZE);
56        this.threadLastJavaSpOffset = threadLastJavaSpOffset;
57        this.threadLastJavaPcOffset = threadLastJavaPcOffset;
58        this.threadJavaFrameAnchorFlagsOffset = threadJavaFrameAnchorFlagsOffset;
59        this.thread = thread;
60        this.threadTemp = threadTemp;
61    }
62
63    @Override
64    public void emitCode(CompilationResultBuilder crb, SPARCMacroAssembler masm) {
65
66        // Restore the thread register when coming back from the runtime.
67        SPARCMove.move(crb, masm, thread.asValue(LIRKind.value(XWORD)), threadTemp, SPARCDelayedControlTransfer.DUMMY);
68
69        // Reset last Java frame, last Java PC and flags.
70        masm.stx(g0, new SPARCAddress(thread, threadLastJavaSpOffset));
71        masm.stx(g0, new SPARCAddress(thread, threadLastJavaPcOffset));
72        masm.stw(g0, new SPARCAddress(thread, threadJavaFrameAnchorFlagsOffset));
73    }
74}
75