1 /* 2 * Copyright 2003 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.x86; 26 27 import sun.jvm.hotspot.asm.*; 28 29 public class SSEMoveDecoder extends SSEInstructionDecoder { 30 31 public SSEMoveDecoder(String name, int addrMode1, int operandType1, int addrMode2, int operandType2) { 32 super(name, addrMode1, operandType1, addrMode2, operandType2); 33 } 34 35 protected Instruction decodeInstruction(byte[] bytesArray, boolean operandSize, boolean addrSize, X86InstructionFactory factory) { 36 Operand op1 = getOperand1(bytesArray, operandSize, addrSize); 37 Operand op2 = getOperand2(bytesArray, operandSize, addrSize); 38 int size = byteIndex - instrStartIndex; 39 40 if( (op1 instanceof X86Register) && (op2 instanceof ImmediateOrRegister) ) { 41 return factory.newMoveInstruction(name, (X86Register)op1, (ImmediateOrRegister)op2, size, 0); 42 } 43 else if( (op1 instanceof Address) && (op2 instanceof Immediate) ) { 44 return factory.newGeneralInstruction(name, op1, op2, size, 0); 45 } 46 else if( (op1 instanceof Address) && (op2 instanceof X86Register) ) { 47 return factory.newMoveStoreInstruction(name, (Address)op1, (X86Register)op2, 0, size, 0); 48 } 49 else if( (op1 instanceof X86Register) && (op2 instanceof Address) ) { 50 return factory.newMoveLoadInstruction(name, (X86Register)op1, (Address)op2, 0, size, 0); 51 } 52 53 return null; 54 } 55 }