Mercurial > hg > graal-jvmci-8
view agent/src/share/classes/sun/jvm/hotspot/asm/sparc/V9FMOVccDecoder.java @ 0:a61af66fc99e jdk7-b24
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author | duke |
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date | Sat, 01 Dec 2007 00:00:00 +0000 |
parents | |
children | c18cbe5936b8 |
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/* * 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.*; import sun.jvm.hotspot.utilities.Assert; class V9FMOVccDecoder extends V9CMoveDecoder implements /* imports */ RTLDataTypes { private final int opf; private final int dataType; V9FMOVccDecoder(int opf, int dataType) { this.opf = opf; this.dataType = dataType; } private static String getFMoveCCName(int conditionCode, int conditionFlag, int dataType) { StringBuffer buf = new StringBuffer("fmov"); buf.append(getFloatTypeCode(dataType)); buf.append(getConditionName(conditionCode, conditionFlag)); return buf.toString(); } private static int getFMoveConditionFlag(int instruction) { return (instruction & OPF_CC_MASK) >>> OPF_CC_START_BIT; } Instruction decode(int instruction, SPARCInstructionFactory factory) { SPARCV9InstructionFactory v9factory = (SPARCV9InstructionFactory) factory; Instruction instr = null; int conditionFlag = getFMoveConditionFlag(instruction); if (conditionFlag == CFLAG_RESERVED1 || conditionFlag == CFLAG_RESERVED2) { instr = v9factory.newIllegalInstruction(instruction); } else { int rdNum = getDestinationRegister(instruction); int rs1Num = getSourceRegister1(instruction); SPARCRegister rd = RegisterDecoder.decode(dataType, rdNum); int conditionCode = getMoveConditionCode(instruction); SPARCRegister rs = RegisterDecoder.decode(dataType, rs1Num); String name = getFMoveCCName(conditionCode, conditionFlag, dataType); instr = v9factory.newV9FMOVccInstruction(name,opf, conditionCode, conditionFlag, (SPARCFloatRegister)rs, (SPARCFloatRegister)rd); } return instr; } }