--- old/agent/src/share/classes/sun/jvm/hotspot/asm/sparc/V9ShiftDecoder.java Thu Sep 17 16:10:26 2009 +++ /dev/null Thu Sep 17 16:10:26 2009 @@ -1,62 +0,0 @@ -/* - * 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.*; - -class V9ShiftDecoder extends InstructionDecoder - implements V9InstructionDecoder { - final int op3; - final String name; - final int rtlOperation; - - V9ShiftDecoder(int op3, String name, int rtlOperation) { - this.op3 = op3; - this.name = name; - this.rtlOperation = rtlOperation; - } - - static boolean isXBitSet(int instruction) { - return (instruction & X_MASK) != 0; - } - - Instruction decode(int instruction, - SPARCInstructionFactory factory) { - SPARCRegister rs1 = SPARCRegisters.getRegister(getSourceRegister1(instruction)); - SPARCRegister rd = SPARCRegisters.getRegister(getDestinationRegister(instruction)); - boolean xBit = isXBitSet(instruction); - ImmediateOrRegister operand2 = null; - - if (isIBitSet(instruction)) { - // look for 64 bits shift operations. - int value = instruction & ( xBit ? SHIFT_COUNT_6_MASK : SHIFT_COUNT_5_MASK); - operand2 = new Immediate(new Short((short) value)); - } else { - operand2 = SPARCRegisters.getRegister(getSourceRegister2(instruction)); - } - - return factory.newShiftInstruction(xBit? name + "x" : name, op3, rtlOperation, rs1, operand2, rd); - } -}