--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/agent/src/share/classes/sun/jvm/hotspot/asm/sparc/ShiftDecoder.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,59 @@
+/*
+ * 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 ShiftDecoder extends InstructionDecoder {
+    final int op3;
+    final String name;
+    final int rtlOperation;
+
+    ShiftDecoder(int op3, String name, int rtlOperation) {
+        this.op3 = op3;
+        this.name = name;
+        this.rtlOperation = rtlOperation;
+    }
+
+    private ImmediateOrRegister getShiftLength(int instruction) {
+        boolean iBit = isIBitSet(instruction);
+        ImmediateOrRegister operand2 = null;
+        if (iBit) {
+            int value = instruction & SHIFT_COUNT_5_MASK;
+            operand2 = new Immediate(new Short((short)value));
+        } else {
+            operand2 = SPARCRegisters.getRegister(getSourceRegister2(instruction));
+        }
+        return operand2;
+    }
+
+    Instruction decode(int instruction,
+                       SPARCInstructionFactory factory) {
+        SPARCRegister rs1 = SPARCRegisters.getRegister(getSourceRegister1(instruction));
+        SPARCRegister rd = SPARCRegisters.getRegister(getDestinationRegister(instruction));
+        ImmediateOrRegister operand2 = getShiftLength(instruction);
+        return factory.newShiftInstruction(name, op3, rtlOperation, rs1, operand2, rd);
+    }
+}