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annotate graal/com.oracle.graal.hotspot.sparc/src/com/oracle/graal/hotspot/sparc/SPARCSafepointOp.java @ 10871:c3b09d69dfde

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SPARC: fixes and more implementation; can now allocate objects
author twisti
date Wed, 24 Jul 2013 17:57:52 -0700
parents 7a8d6ba83a04
children 19a7856e3ab9
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1 /*
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2 * Copyright (c) 2011, 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.asm.sparc.SPARCMacroAssembler.*;
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26 import static com.oracle.graal.sparc.SPARC.*;
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27 import static com.oracle.graal.phases.GraalOptions.*;
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28 import sun.misc.*;
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29
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30 import com.oracle.graal.api.code.*;
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31 import com.oracle.graal.api.meta.*;
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32 import com.oracle.graal.asm.sparc.*;
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33 import com.oracle.graal.hotspot.*;
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34 import com.oracle.graal.lir.*;
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35 import com.oracle.graal.lir.sparc.*;
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36 import com.oracle.graal.lir.asm.*;
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37 import com.oracle.graal.nodes.spi.*;
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38
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39 /**
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40 * Emits a safepoint poll.
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41 */
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42 @Opcode("SAFEPOINT")
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43 public class SPARCSafepointOp extends SPARCLIRInstruction {
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44
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45 private static final Unsafe unsafe = Unsafe.getUnsafe();
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46
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47 @State protected LIRFrameState state;
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48 @Temp({OperandFlag.REG}) private AllocatableValue temp;
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49
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50 private final HotSpotVMConfig config;
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51
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52 public SPARCSafepointOp(LIRFrameState state, HotSpotVMConfig config, LIRGeneratorTool tool) {
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53 this.state = state;
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54 this.config = config;
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55 temp = tool.newVariable(tool.target().wordKind);
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56 }
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57
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58 @Override
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59 public void emitCode(TargetMethodAssembler tasm, SPARCMacroAssembler masm) {
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60 final int pos = masm.codeBuffer.position();
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61 final int offset = SafepointPollOffset.getValue() % unsafe.pageSize();
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62 Register scratch = ((RegisterValue) temp).getRegister();
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63 new Setx(config.safepointPollingAddress + offset, scratch).emit(masm);
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64 tasm.recordInfopoint(pos, state, InfopointReason.SAFEPOINT);
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65 new Ldx(new SPARCAddress(scratch, 0), g0).emit(masm);
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66 }
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67 }