hotspot/agent/src/share/classes/sun/jvm/hotspot/asm/sparc/V9ReadDecoder.java
changeset 13909 9b94bf4dcc0c
parent 13908 6fa036b39eb9
parent 13907 52873e4bbeaa
child 13911 e59cfb5f223b
--- 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;
-    }
-}