1 /* 2 * Copyright (c) 2012, 2015, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 package org.graalvm.compiler.hotspot.sparc; 24 25 import static org.graalvm.compiler.lir.LIRInstruction.OperandFlag.ILLEGAL; 26 import static org.graalvm.compiler.lir.LIRInstruction.OperandFlag.REG; 27 import static jdk.vm.ci.code.ValueUtil.asRegister; 28 29 import org.graalvm.compiler.asm.sparc.SPARCMacroAssembler; 30 import org.graalvm.compiler.hotspot.GraalHotSpotVMConfig; 31 import org.graalvm.compiler.lir.LIRInstructionClass; 32 import org.graalvm.compiler.lir.Opcode; 33 import org.graalvm.compiler.lir.asm.CompilationResultBuilder; 34 import org.graalvm.compiler.lir.sparc.SPARCControlFlow.ReturnOp; 35 36 import jdk.vm.ci.meta.Value; 37 38 /** 39 * Returns from a function. 40 */ 41 @Opcode("RETURN") 42 final class SPARCHotSpotReturnOp extends SPARCHotSpotEpilogueOp { 43 public static final LIRInstructionClass<SPARCHotSpotReturnOp> TYPE = LIRInstructionClass.create(SPARCHotSpotReturnOp.class); 44 public static final SizeEstimate SIZE = SizeEstimate.create(2); 45 46 @Use({REG, ILLEGAL}) protected Value value; 47 @Use({REG}) protected Value safepointPollAddress; 48 private final boolean isStub; 49 private final GraalHotSpotVMConfig config; 50 51 SPARCHotSpotReturnOp(Value value, boolean isStub, GraalHotSpotVMConfig config, Value safepointPoll) { 52 super(TYPE, SIZE); 53 this.value = value; 54 this.isStub = isStub; 55 this.config = config; 56 this.safepointPollAddress = safepointPoll; 57 } 58 59 @Override 60 public void emitCode(CompilationResultBuilder crb, SPARCMacroAssembler masm) { 61 if (!isStub) { 62 // Every non-stub compile method must have a poll before the return. 63 SPARCHotSpotSafepointOp.emitCode(crb, masm, config, true, null, asRegister(safepointPollAddress)); 64 } 65 ReturnOp.emitCodeHelper(crb, masm); 66 } 67 }