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 public class SPARCSaveInstruction extends SPARCFormat3AInstruction { 30 final private boolean trivial; 31 public SPARCSaveInstruction(SPARCRegister rs1, ImmediateOrRegister operand2, SPARCRegister rd) { 32 super("save", SAVE, rs1, operand2, rd); 33 SPARCRegister G0 = SPARCRegisters.G0; 34 trivial = (rs1 == G0 && operand2 == G0 && rd == G0); 35 } 36 37 public boolean isTrivial() { 38 return trivial; 39 } 40 41 protected String getOperand2String() { 42 StringBuffer buf = new StringBuffer(); 43 if (operand2.isRegister()) { 44 buf.append(operand2.toString()); 45 } else { 46 Number number = ((Immediate)operand2).getNumber(); 47 int value = number.intValue(); 48 if (value < 0) { 49 buf.append("-0x"); 50 value = -value; 51 } else { 52 buf.append("0x"); 53 } 54 55 buf.append(Integer.toHexString(value)); 56 } 57 return buf.toString(); 58 } 59 60 protected String getDescription() { 61 return (trivial) ? getName() : super.getDescription(); 62 } 63 }