--- old/agent/src/share/classes/sun/jvm/hotspot/asm/sparc/BranchDecoder.java Thu Sep 17 16:09:49 2009 +++ /dev/null Thu Sep 17 16:09:49 2009 @@ -1,71 +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.*; - -abstract class BranchDecoder extends InstructionDecoder { - - // format 2 - condition code names. - // Appendix F - Opcodes and Condition Codes - Page 231 - Table F-7. - static final String integerConditionNames[] = { - "bn", "be", "ble", "bl", "bleu", "bcs", "bneg", "bvs", - "ba", "bne", "bg", "bge", "bgu", "bcc", "bpos", "bvc" - }; - - static final String integerAnnuledConditionNames[] = { - "bn,a", "be,a", "ble,a", "bl,a", "bleu,a", "bcs,a", "bneg,a", "bvs,a", - "ba,a", "bne,a", "bg,a", "bge,a", "bgu,a", "bcc,a", "bpos,a", "bvc,a" - }; - - // format 2 - condition code names. - // Appendix F - Opcodes and Condition Codes - Page 231 - Table F-7. - static final String floatConditionNames[] = { - "fbn", "fbne", "fblg", "fbul", "fbl", "fbug", "fbg", "fbu", - "fba", "fbe", "fbue", "fbge", "fbuge", "fble", "fbule", "fbo" - }; - - static final String floatAnnuledConditionNames[] = { - "fbn,a", "fbne,a", "fblg,a", "fbul,a", "fbl,a", "fbug,a", "fbg,a", "fbu,a", - "fba,a", "fbe,a", "fbue,a", "fbge,a", "fbuge,a", "fble,a", "fbule,a", "fbo,a" - }; - - static boolean getAnnuledBit(int instruction) { - return (instruction & ANNUL_MASK) != 0; - } - - Instruction decode(int instruction, SPARCInstructionFactory factory) { - boolean isAnnuled = getAnnuledBit(instruction); - int conditionCode = getConditionCode(instruction); - String conditionName = getConditionName(conditionCode, isAnnuled); - int offset = extractSignedIntFromNBits(instruction, 22); - // word align the offset by right shifting 2 bits - offset <<= 2; - PCRelativeAddress addr = new PCRelativeAddress(offset); - return factory.newBranchInstruction(conditionName, addr, isAnnuled, conditionCode); - } - - abstract String getConditionName(int conditionCode, boolean isAnnuled); -}