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23217
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1 /*
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2 * Copyright (c) 2013, 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.aarch64;
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24
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25 import static com.oracle.graal.lir.LIRInstruction.OperandFlag.REG;
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26 import static jdk.vm.ci.aarch64.AArch64.r12;
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27 import static jdk.vm.ci.code.ValueUtil.asRegister;
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28
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29 import com.oracle.graal.asm.aarch64.AArch64MacroAssembler;
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30 import com.oracle.graal.lir.LIRFrameState;
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31 import com.oracle.graal.lir.LIRInstructionClass;
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32 import com.oracle.graal.lir.Opcode;
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33 import com.oracle.graal.lir.aarch64.AArch64Call;
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34 import com.oracle.graal.lir.aarch64.AArch64Call.IndirectCallOp;
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35 import com.oracle.graal.lir.asm.CompilationResultBuilder;
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36
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37 import jdk.vm.ci.code.Register;
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38 import jdk.vm.ci.hotspot.HotSpotVMConfig;
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39 import jdk.vm.ci.meta.ResolvedJavaMethod;
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40 import jdk.vm.ci.meta.Value;
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41
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42 /**
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43 * A register indirect call that complies with the extra conventions for such calls in HotSpot. In
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44 * particular, the metaspace Method of the callee must be in r12 for the case where a vtable entry's
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45 * _from_compiled_entry is the address of an C2I adapter. Such adapters expect the target method to
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46 * be in r12.
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47 */
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48 @Opcode("CALL_INDIRECT")
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49 final class AArch64IndirectCallOp extends IndirectCallOp {
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50
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51 public static final LIRInstructionClass<AArch64IndirectCallOp> TYPE = LIRInstructionClass.create(AArch64IndirectCallOp.class);
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52
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53 /**
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54 * Vtable stubs expect the metaspace Method in r12.
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55 */
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56 public static final Register METHOD = r12;
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57
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58 @Use({REG}) private Value metaspaceMethod;
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59
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60 private final HotSpotVMConfig config;
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61
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62 public AArch64IndirectCallOp(ResolvedJavaMethod callTarget, Value result, Value[] parameters, Value[] temps, Value metaspaceMethod, Value targetAddress, LIRFrameState state, HotSpotVMConfig config) {
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63 super(TYPE, callTarget, result, parameters, temps, targetAddress, state);
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64 this.metaspaceMethod = metaspaceMethod;
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65 this.config = config;
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66 }
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67
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68 @Override
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69 public void emitCode(CompilationResultBuilder crb, AArch64MacroAssembler masm) {
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70 crb.recordMark(config.MARKID_INLINE_INVOKE);
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71 Register callReg = asRegister(targetAddress);
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72 assert !callReg.equals(METHOD);
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73 AArch64Call.indirectCall(crb, masm, callReg, callTarget, state);
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74 }
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75
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76 @Override
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77 public void verify() {
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78 super.verify();
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79 assert asRegister(metaspaceMethod).equals(METHOD);
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80 }
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81 }
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