| /* |
| * Copyright 2002 Sun Microsystems, Inc. All Rights Reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| * CA 95054 USA or visit www.sun.com if you need additional information or |
| * have any questions. |
| * |
| */ |
| |
| package sun.jvm.hotspot.asm.sparc; |
| |
| import sun.jvm.hotspot.asm.*; |
| |
| abstract class V9CCBranchDecoder extends V9BranchDecoder { |
| abstract int getConditionFlag(int instruction); |
| |
| Instruction decode(int instruction, SPARCInstructionFactory factory) { |
| SPARCV9InstructionFactory v9factory = (SPARCV9InstructionFactory) factory; |
| int conditionFlag = getConditionFlag(instruction); |
| boolean predictTaken = getPredictTaken(instruction); |
| int conditionCode = getConditionCode(instruction); |
| boolean annuled = getAnnuledBit(instruction); |
| String name = getConditionName(conditionCode, annuled); |
| // signed word aligned 19 bit |
| PCRelativeAddress addr = new PCRelativeAddress(extractSignedIntFromNBits(instruction, 19) << 2); |
| return v9factory.newV9BranchInstruction(name, addr, annuled, conditionCode, |
| predictTaken, conditionFlag); |
| } |
| } |
