--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/agent/src/share/classes/sun/jvm/hotspot/asm/sparc/FloatDecoder.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,80 @@
+/*
+ * 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 FloatDecoder extends InstructionDecoder {
+    final int    opf;
+    final String name;
+    final int    numSources; // 1 or 2;
+    final int    src1Type;   // RTLDT_FL_SINGLE, _DOUBLE, _QUAD
+    final int    src2Type;   // RTLDT_FL_SINGLE, _DOUBLE, _QUAD
+    final int    resultType; // RTLDT_FL_SINGLE, _DOUBLE, _QUAD
+
+    FloatDecoder(int opf, String name, int src1Type, int src2Type, int resultType) {
+        this.opf = opf;
+        this.name = name;
+        numSources = 2;
+        this.src1Type = src1Type;
+        this.src2Type = src2Type;
+        this.resultType = resultType;
+    }
+
+    FloatDecoder(int opf, String name, int src2Type, int resultType) {
+        this.opf = opf;
+        this.name = name;
+        numSources = 1;
+        this.src1Type = RTLOP_UNKNOWN;
+        this.src2Type = src2Type;
+        this.resultType = resultType;
+    }
+
+    abstract Instruction decodeFloatInstruction(int instruction,
+                               SPARCRegister rs1, SPARCRegister rs2, SPARCRegister rd,
+                               SPARCInstructionFactory factory);
+
+    Instruction decode(int instruction, SPARCInstructionFactory factory) {
+        int rs1Num = getSourceRegister1(instruction);
+        int rs2Num = getSourceRegister2(instruction);
+        int rdNum = getDestinationRegister(instruction);
+
+        SPARCRegister rs1 = null;
+        if (numSources == 2) {
+           rs1 = RegisterDecoder.decode(src1Type, rs1Num);
+           if (rs1 == null) {
+              return factory.newIllegalInstruction(instruction);
+           }
+        }
+
+        SPARCRegister rd = RegisterDecoder.decode(resultType, rdNum);
+        SPARCRegister rs2 = RegisterDecoder.decode(src2Type, rs2Num);
+        if (rd == null || rs2 == null) {
+           return factory.newIllegalInstruction(instruction);
+        }
+
+        return decodeFloatInstruction(instruction, rs1, rs2, rd, factory);
+    }
+}