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annotate graal/com.oracle.graal.hotspot.sparc/src/com/oracle/graal/hotspot/sparc/SPARCHotSpotSafepointOp.java @ 21708:6df25b1418be

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moved com.oracle.asm.** to jvmci-util.jar (JBS:GRAAL-53)
author Doug Simon <doug.simon@oracle.com>
date Wed, 03 Jun 2015 18:06:44 +0200
parents 5024c80224c7
children d915361cc3a1
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1 /*
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2 * Copyright (c) 2011, 2015, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 */
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23 package com.oracle.graal.hotspot.sparc;
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24
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25 import com.oracle.jvmci.asm.sparc.*;
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26 import com.oracle.jvmci.asm.sparc.SPARCMacroAssembler.*;
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27 import com.oracle.jvmci.code.Register;
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28 import com.oracle.jvmci.code.InfopointReason;
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29 import com.oracle.jvmci.code.RegisterValue;
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30 import com.oracle.jvmci.meta.LIRKind;
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31 import com.oracle.jvmci.meta.AllocatableValue;
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33 import static com.oracle.jvmci.sparc.SPARC.*;
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34
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35 import com.oracle.graal.lir.*;
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36 import com.oracle.graal.lir.asm.*;
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37 import com.oracle.graal.lir.gen.*;
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38 import com.oracle.graal.lir.sparc.*;
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39 import com.oracle.jvmci.hotspot.*;
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40
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41 import edu.umd.cs.findbugs.annotations.*;
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42
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43 /**
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44 * Emits a safepoint poll.
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45 */
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46 @Opcode("SAFEPOINT")
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47 public class SPARCHotSpotSafepointOp extends SPARCLIRInstruction {
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48 public static final LIRInstructionClass<SPARCHotSpotSafepointOp> TYPE = LIRInstructionClass.create(SPARCHotSpotSafepointOp.class);
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49
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50 @State protected LIRFrameState state;
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51 @SuppressFBWarnings(value = "BC_IMPOSSIBLE_CAST", justification = "changed by the register allocator") @Temp({OperandFlag.REG}) private AllocatableValue temp;
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52
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53 private final HotSpotVMConfig config;
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54
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55 public SPARCHotSpotSafepointOp(LIRFrameState state, HotSpotVMConfig config, LIRGeneratorTool tool) {
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56 super(TYPE);
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57 this.state = state;
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58 this.config = config;
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59 this.temp = tool.newVariable(LIRKind.value(tool.target().wordKind));
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60 }
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61
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62 @Override
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63 public void emitCode(CompilationResultBuilder crb, SPARCMacroAssembler masm) {
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64 Register scratch = ((RegisterValue) temp).getRegister();
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65 emitCode(crb, masm, config, false, state, scratch);
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66 }
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67
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68 public static void emitCode(CompilationResultBuilder crb, SPARCMacroAssembler masm, HotSpotVMConfig config, boolean atReturn, LIRFrameState state, Register scratch) {
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69 new Setx(config.safepointPollingAddress, scratch).emit(masm);
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70 crb.recordMark(atReturn ? config.MARKID_POLL_RETURN_FAR : config.MARKID_POLL_FAR);
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71 final int pos = masm.position();
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72 masm.ldx(new SPARCAddress(scratch, 0), g0);
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73 if (state != null) {
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74 crb.recordInfopoint(pos, state, InfopointReason.SAFEPOINT);
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75 }
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76 }
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77 }