1 /* 2 * Copyright (c) 2002, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, 20 * CA 94065 USA or visit www.oracle.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 class V9DoneRetryDecoder extends InstructionDecoder 30 implements V9InstructionDecoder { 31 Instruction decode(int instruction, SPARCInstructionFactory factory) { 32 SPARCV9InstructionFactory v9factory = (SPARCV9InstructionFactory) factory; 33 Instruction instr = null; 34 int rdNum = getDestinationRegister(instruction); 35 // "rd" field is "fcn". Only values 0 and 1 are defined. 36 // see page 157 - A.11 Done and Retry 37 switch (rdNum) { 38 case 0: 39 instr = v9factory.newV9DoneInstruction(); 40 break; 41 case 1: 42 instr = v9factory.newV9RetryInstruction(); 43 break; 44 default: 45 instr = v9factory.newIllegalInstruction(instruction); 46 break; 47 } 48 return instr; 49 } 50 }