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annotate graal/com.oracle.graal.hotspot.amd64/src/com/oracle/graal/hotspot/amd64/AMD64HotSpotUnwindOp.java @ 21657:137068704691

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Remove obsoleted TODOs.
author Josef Eisl <josef.eisl@jku.at>
date Fri, 29 May 2015 15:44:36 +0200
parents 47a3d4b3ccb3
children 5024c80224c7
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /*
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2 * Copyright (c) 2012, 2014, 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.amd64.AMD64.*;
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26 import static com.oracle.graal.hotspot.HotSpotBackend.*;
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27 import static com.oracle.graal.lir.LIRInstruction.OperandFlag.*;
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28 import static com.oracle.jvmci.code.ValueUtil.*;
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30 import com.oracle.graal.asm.amd64.*;
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31 import com.oracle.graal.hotspot.stubs.*;
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32 import com.oracle.graal.lir.*;
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33 import com.oracle.graal.lir.StandardOp.BlockEndOp;
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34 import com.oracle.graal.lir.amd64.*;
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35 import com.oracle.graal.lir.asm.*;
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36 import com.oracle.jvmci.code.*;
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37 import com.oracle.jvmci.meta.*;
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39 /**
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40 * Removes the current frame and jumps to the {@link UnwindExceptionToCallerStub}.
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41 */
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42 @Opcode("UNWIND")
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43 final class AMD64HotSpotUnwindOp extends AMD64HotSpotEpilogueOp implements BlockEndOp {
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44 public static final LIRInstructionClass<AMD64HotSpotUnwindOp> TYPE = LIRInstructionClass.create(AMD64HotSpotUnwindOp.class);
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45
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46 @Use({REG}) protected RegisterValue exception;
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47
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48 AMD64HotSpotUnwindOp(RegisterValue exception, AllocatableValue savedRbp) {
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49 super(TYPE, savedRbp);
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50 this.exception = exception;
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51 }
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53 @Override
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54 public void emitCode(CompilationResultBuilder crb, AMD64MacroAssembler masm) {
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55 leaveFrameAndRestoreRbp(crb, masm);
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56
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57 ForeignCallLinkage linkage = crb.foreignCalls.lookupForeignCall(UNWIND_EXCEPTION_TO_CALLER);
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58 CallingConvention cc = linkage.getOutgoingCallingConvention();
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59 assert cc.getArgumentCount() == 2;
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60 assert exception.equals(cc.getArgument(0));
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62 // Get return address (is on top of stack after leave).
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63 Register returnAddress = asRegister(cc.getArgument(1));
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64 masm.movq(returnAddress, new AMD64Address(rsp, 0));
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65
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66 AMD64Call.directJmp(crb, masm, linkage);
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67 }
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68 }