--- old/agent/src/share/classes/sun/jvm/hotspot/asm/sparc/V9ReadDecoder.java Thu Sep 17 16:10:25 2009 +++ /dev/null Thu Sep 17 16:10:25 2009 @@ -1,66 +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 V9ReadDecoder extends InstructionDecoder - implements V9InstructionDecoder { - Instruction decode(int instruction, SPARCInstructionFactory factory) { - SPARCV9InstructionFactory v9factory = (SPARCV9InstructionFactory) factory; - Instruction instr = null; - int specialRegNum = getSourceRegister1(instruction); - - // rs1 values 1, 7-14 are reserved - see page 214, A.44 Read State Register. - if (specialRegNum == 1 || (specialRegNum > 6 && specialRegNum < 15)) { - instr = v9factory.newIllegalInstruction(instruction); - } else { - int rdNum = getDestinationRegister(instruction); - if (specialRegNum == 15) { - // may be stbar, member or illegal - if (rdNum == 0) { - boolean iBit = isIBitSet(instruction); - if (iBit) { - instr = v9factory.newV9MembarInstruction((instruction & MMASK_MASK) >>> MMASK_START_BIT, - (instruction & CMASK_MASK) >>> CMASK_START_BIT); - } else { - instr = v9factory.newStbarInstruction(); - } - } else { // rd != 0 && rs1 == 15 - instr = v9factory.newIllegalInstruction(instruction); - } - } else { - int asrRegNum = -1; - if (specialRegNum > 15){ - asrRegNum = specialRegNum; - specialRegNum = SPARCV9SpecialRegisters.ASR; - } - SPARCRegister rd = SPARCRegisters.getRegister(rdNum); - instr = v9factory.newV9ReadInstruction(specialRegNum, asrRegNum, rd); - } - } - return instr; - } -}