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annotate graal/com.oracle.graal.hotspot.sparc/src/com/oracle/graal/hotspot/sparc/SPARCHotSpotJumpToExceptionHandlerInCallerOp.java @ 16930:62ae5c2c241d

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[SPARC] add missing delay slot wen jumping to exception handler.
author Stefan Anzinger <stefan.anzinger@gmail.com>
date Tue, 12 Aug 2014 08:52:53 -0700
parents 2fc9d69be77e
children c9576b6cf7d6
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1 /*
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2 * Copyright (c) 2012, 2013, 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 static com.oracle.graal.api.code.ValueUtil.*;
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26 import static com.oracle.graal.lir.LIRInstruction.OperandFlag.*;
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27 import static com.oracle.graal.sparc.SPARC.*;
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28
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29 import com.oracle.graal.api.code.*;
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30 import com.oracle.graal.api.meta.*;
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31 import com.oracle.graal.asm.sparc.*;
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32 import com.oracle.graal.asm.sparc.SPARCAssembler.*;
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33 import com.oracle.graal.asm.sparc.SPARCMacroAssembler.*;
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34 import com.oracle.graal.lir.*;
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35 import com.oracle.graal.lir.asm.*;
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36
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37 /**
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38 * Sets up the arguments for an exception handler in the callers frame, removes the current frame
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39 * and jumps to the handler.
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40 */
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41 @Opcode("JUMP_TO_EXCEPTION_HANDLER_IN_CALLER")
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42 final class SPARCHotSpotJumpToExceptionHandlerInCallerOp extends SPARCHotSpotEpilogueOp {
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43
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44 @Use(REG) AllocatableValue handlerInCallerPc;
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45 @Use(REG) AllocatableValue exception;
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46 @Use(REG) AllocatableValue exceptionPc;
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47 private final Register thread;
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48 private final int isMethodHandleReturnOffset;
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49
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50 SPARCHotSpotJumpToExceptionHandlerInCallerOp(AllocatableValue handlerInCallerPc, AllocatableValue exception, AllocatableValue exceptionPc, int isMethodHandleReturnOffset, Register thread) {
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51 this.handlerInCallerPc = handlerInCallerPc;
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52 this.exception = exception;
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53 this.exceptionPc = exceptionPc;
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54 this.isMethodHandleReturnOffset = isMethodHandleReturnOffset;
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55 this.thread = thread;
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56 }
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57
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58 @Override
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59 public void emitCode(CompilationResultBuilder crb, SPARCMacroAssembler masm) {
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60 // Move the values up one level to be the input for the next call.
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61 new SPARCMacroAssembler.Mov(asRegister(handlerInCallerPc), i2).emit(masm);
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62 new SPARCMacroAssembler.Mov(asRegister(exception), i0).emit(masm);
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63 new SPARCMacroAssembler.Mov(asRegister(exceptionPc), i1).emit(masm);
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64 leaveFrame(crb);
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65
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66 // Restore SP from L7 if the exception PC is a method handle call site.
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67 SPARCAddress dst = new SPARCAddress(thread, isMethodHandleReturnOffset);
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68 new Lduw(dst, o7).emit(masm);
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69 new Cmp(o7, o7).emit(masm);
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70 new Movcc(ConditionFlag.NotZero, CC.Icc, l7, sp).emit(masm);
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71
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72 new Jmpl(asRegister(handlerInCallerPc), 0, g0).emit(masm);
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73 new Nop().emit(masm);
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74 }
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75 }