001/* 002 * Copyright (c) 2012, 2015, Oracle and/or its affiliates. All rights reserved. 003 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 004 * 005 * This code is free software; you can redistribute it and/or modify it 006 * under the terms of the GNU General Public License version 2 only, as 007 * published by the Free Software Foundation. 008 * 009 * This code is distributed in the hope that it will be useful, but WITHOUT 010 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 011 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 012 * version 2 for more details (a copy is included in the LICENSE file that 013 * accompanied this code). 014 * 015 * You should have received a copy of the GNU General Public License version 016 * 2 along with this work; if not, write to the Free Software Foundation, 017 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 018 * 019 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 020 * or visit www.oracle.com if you need additional information or have any 021 * questions. 022 */ 023package com.oracle.graal.hotspot.sparc; 024 025import static com.oracle.graal.lir.LIRInstruction.OperandFlag.*; 026import static jdk.internal.jvmci.code.ValueUtil.*; 027import jdk.internal.jvmci.hotspot.*; 028import jdk.internal.jvmci.meta.*; 029 030import com.oracle.graal.asm.sparc.*; 031import com.oracle.graal.lir.*; 032import com.oracle.graal.lir.asm.*; 033import com.oracle.graal.lir.sparc.SPARCControlFlow.ReturnOp; 034 035/** 036 * Returns from a function. 037 */ 038@Opcode("RETURN") 039final class SPARCHotSpotReturnOp extends SPARCHotSpotEpilogueOp { 040 public static final LIRInstructionClass<SPARCHotSpotReturnOp> TYPE = LIRInstructionClass.create(SPARCHotSpotReturnOp.class); 041 public static final SizeEstimate SIZE = SizeEstimate.create(2); 042 043 @Use({REG, ILLEGAL}) protected Value value; 044 @Use({REG}) protected Value safepointPollAddress; 045 private final boolean isStub; 046 private final HotSpotVMConfig config; 047 048 SPARCHotSpotReturnOp(Value value, boolean isStub, HotSpotVMConfig config, Value safepointPoll) { 049 super(TYPE, SIZE); 050 this.value = value; 051 this.isStub = isStub; 052 this.config = config; 053 this.safepointPollAddress = safepointPoll; 054 } 055 056 @Override 057 public void emitCode(CompilationResultBuilder crb, SPARCMacroAssembler masm) { 058 if (!isStub) { 059 // Every non-stub compile method must have a poll before the return. 060 SPARCHotSpotSafepointOp.emitCode(crb, masm, config, true, null, asRegister(safepointPollAddress)); 061 } 062 ReturnOp.emitCodeHelper(crb, masm); 063 } 064}