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 X86ShiftInstruction extends X86Instruction implements ShiftInstruction { 30 final private int operation; 31 final private Operand operand1; 32 final private ImmediateOrRegister operand2; 33 34 public X86ShiftInstruction(String name, int operation, Operand operand1, ImmediateOrRegister operand2, int size, int prefixes) { 35 super(name, size, prefixes); 36 this.operand1 = operand1; 37 this.operand2 = operand2; 38 this.operation = operation; 39 } 40 41 public String asString(long currentPc, SymbolFinder symFinder) { 42 StringBuffer buf = new StringBuffer(); 43 buf.append(getPrefixString()); 44 buf.append(getName()); 45 buf.append(spaces); 46 buf.append(getOperandAsString(operand1)); 47 48 if(operand2 != null) { 49 buf.append(comma); 50 51 if ((operand2 instanceof Register)) { 52 buf.append(operand2.toString()); 53 } 54 else { 55 Number number = ((Immediate)operand2).getNumber(); 56 buf.append("0x"); 57 buf.append(Integer.toHexString(number.intValue())); 58 } 59 } 60 return buf.toString(); 61 } 62 63 public int getOperation() { 64 return operation; 65 } 66 67 public Operand getShiftDestination() { 68 return operand1; 69 } 70 71 public Operand getShiftLength() { 72 return operand2; 73 } 74 75 public Operand getShiftSource() { 76 return operand1; 77 } 78 79 public boolean isShift() { 80 return true; 81 } 82 83 protected String getOperand2String() { 84 return operand2.toString(); 85 } 86 }