1 /* 2 * Copyright 2002 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, 20 * CA 95054 USA or visit www.sun.com if you need additional information or 21 * have any questions. 22 * 23 */ 24 25 package sun.jvm.hotspot.asm.sparc; 26 27 import sun.jvm.hotspot.asm.*; 28 29 abstract class V9AlternateSpaceDecoder extends MemoryInstructionDecoder 30 implements V9InstructionDecoder { 31 V9AlternateSpaceDecoder(int op3, String name, int dataType) { 32 super(op3, name, dataType); 33 } 34 35 SPARCRegisterIndirectAddress newRegisterIndirectAddress(SPARCRegister rs1, SPARCRegister rs2) { 36 return new SPARCV9RegisterIndirectAddress(rs1, rs2); 37 } 38 39 SPARCRegisterIndirectAddress newRegisterIndirectAddress(SPARCRegister rs1, int offset) { 40 return new SPARCV9RegisterIndirectAddress(rs1, offset); 41 } 42 43 abstract Instruction decodeV9AsiLoadStore(int instruction, 44 SPARCV9RegisterIndirectAddress addr, 45 SPARCRegister rd, 46 SPARCV9InstructionFactory factory); 47 48 Instruction decodeMemoryInstruction(int instruction, 49 SPARCRegisterIndirectAddress addr, 50 SPARCRegister rd, SPARCInstructionFactory factory) { 51 SPARCV9RegisterIndirectAddress v9addr = (SPARCV9RegisterIndirectAddress) addr; 52 if (isIBitSet(instruction)) { 53 // indirect asi 54 v9addr.setIndirectAsi(true); 55 } else { 56 // immediate asi 57 int asi = (instruction & ASI_MASK) >>> ASI_START_BIT; 58 v9addr.setAddressSpace(asi); 59 } 60 return decodeV9AsiLoadStore(instruction, v9addr, rd, 61 (SPARCV9InstructionFactory) factory); 62 } 63 }