--- a/hotspot/agent/src/share/classes/sun/jvm/hotspot/asm/sparc/V9ReadDecoder.java Thu Sep 27 11:25:01 2012 -0700
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,66 +0,0 @@
-/*
- * Copyright (c) 2002, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
- * or visit www.oracle.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;
- }
-}