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annotate graal/com.oracle.graal.hotspot.amd64/src/com/oracle/graal/hotspot/amd64/AMD64HotSpotDeoptimizeCallerOp.java @ 11352:8185c119d731

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"always set" bit mask on IntegerStamps
author Lukas Stadler <lukas.stadler@jku.at>
date Fri, 16 Aug 2013 13:15:42 +0200
parents fbeda9df497d
children 97d6932a309b
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1 /*
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2 * Copyright (c) 2012, 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.amd64;
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24
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25 import static com.oracle.graal.hotspot.HotSpotBackend.*;
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26 import static com.oracle.graal.hotspot.HotSpotGraalRuntime.*;
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27
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28 import com.oracle.graal.api.code.*;
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29 import com.oracle.graal.api.meta.*;
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30 import com.oracle.graal.asm.amd64.*;
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31 import com.oracle.graal.hotspot.*;
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32 import com.oracle.graal.lir.*;
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33 import com.oracle.graal.lir.amd64.*;
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34 import com.oracle.graal.lir.asm.*;
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35
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36 /**
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37 * Removes the current frame and tail calls the uncommon trap routine.
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38 */
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39 @Opcode("DEOPT_CALLER")
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40 final class AMD64HotSpotDeoptimizeCallerOp extends AMD64HotSpotEpilogueOp {
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41
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42 private final DeoptimizationAction action;
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43 private final DeoptimizationReason reason;
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45 AMD64HotSpotDeoptimizeCallerOp(DeoptimizationAction action, DeoptimizationReason reason) {
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46 this.action = action;
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47 this.reason = reason;
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48 }
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49
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50 @Override
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51 public void emitCode(TargetMethodAssembler tasm, AMD64MacroAssembler masm) {
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52 leaveFrameAndRestoreRbp(tasm, masm);
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53
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54 HotSpotGraalRuntime runtime = graalRuntime();
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55 Register thread = runtime.getRuntime().threadRegister();
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56 masm.movl(new AMD64Address(thread, runtime.getConfig().pendingDeoptimizationOffset), tasm.runtime.encodeDeoptActionAndReason(action, reason));
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57 AMD64Call.directJmp(tasm, masm, tasm.runtime.lookupForeignCall(UNCOMMON_TRAP));
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58 }
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59 }