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 jdk.internal.jvmci.code.*; 026import jdk.internal.jvmci.meta.*; 027import static com.oracle.graal.lir.LIRInstruction.OperandFlag.*; 028import static jdk.internal.jvmci.code.ValueUtil.*; 029import static jdk.internal.jvmci.sparc.SPARC.*; 030 031import com.oracle.graal.asm.sparc.*; 032import com.oracle.graal.lir.*; 033import com.oracle.graal.lir.asm.*; 034import com.oracle.graal.lir.sparc.*; 035 036/** 037 * Patch the return address of the current frame. 038 */ 039@Opcode("PATCH_RETURN") 040final class SPARCHotSpotPatchReturnAddressOp extends SPARCLIRInstruction { 041 public static final LIRInstructionClass<SPARCHotSpotPatchReturnAddressOp> TYPE = LIRInstructionClass.create(SPARCHotSpotPatchReturnAddressOp.class); 042 public static final SizeEstimate SIZE = SizeEstimate.create(1); 043 044 @Use(REG) AllocatableValue address; 045 046 SPARCHotSpotPatchReturnAddressOp(AllocatableValue address) { 047 super(TYPE, SIZE); 048 this.address = address; 049 } 050 051 @Override 052 public void emitCode(CompilationResultBuilder crb, SPARCMacroAssembler masm) { 053 Register addrRegister = asLongReg(address); 054 masm.sub(addrRegister, SPARCAssembler.PC_RETURN_OFFSET, i7); 055 } 056}