--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/agent/src/share/classes/sun/jvm/hotspot/asm/x86/FloatGRPDecoder.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,163 @@
+/*
+ * Copyright 2002-2003 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.x86;
+
+import sun.jvm.hotspot.asm.*;
+
+public class FloatGRPDecoder extends FPInstructionDecoder {
+
+   final private int number;
+
+   //Please refer to IA-32 Intel Architecture Software Developer's Manual Volume 2
+   //APPENDIX A - Escape opcodes
+
+   private static final FPInstructionDecoder floatGRPMap[][] = {
+      /* d9_2 */
+      {
+      new FPInstructionDecoder("fnop"),
+      null,
+      null,
+      null,
+      null,
+      null,
+      null,
+      null
+      },
+      /*  d9_4 */
+      {
+      new FPInstructionDecoder("fchs"),
+      new FPInstructionDecoder("fabs"),
+      null,
+      null,
+      new FPInstructionDecoder("ftst"),
+      new FPInstructionDecoder("fxam"),
+      null,
+      null
+      },
+      /* d9_5 */
+      {
+      new FPInstructionDecoder("fld1"),
+      new FPInstructionDecoder("fldl2t"),
+      new FPInstructionDecoder("fldl2e"),
+      new FPInstructionDecoder("fldpi"),
+      new FPInstructionDecoder("fldlg2"),
+      new FPInstructionDecoder("fldln2"),
+      new FPInstructionDecoder("fldz"),
+      null
+      },
+      /* d9_6 */
+      {
+      new FPInstructionDecoder("f2xm1"),
+      new FPInstructionDecoder("fyl2x"),
+      new FPInstructionDecoder("fptan"),
+      new FPInstructionDecoder("fpatan"),
+      new FPInstructionDecoder("fxtract"),
+      new FPInstructionDecoder("fprem1"),
+      new FPInstructionDecoder("fdecstp"),
+      new FPInstructionDecoder("fincstp")
+      },
+      /* d9_7 */
+      {
+      new FPInstructionDecoder("fprem"),
+      new FPInstructionDecoder("fyl2xp1"),
+      new FPInstructionDecoder("fsqrt"),
+      new FPInstructionDecoder("fsincos"),
+      new FPInstructionDecoder("frndint"),
+      new FPInstructionDecoder("fscale"),
+      new FPInstructionDecoder("fsin"),
+      new FPInstructionDecoder("fcos")
+      },
+      /* da_5 */
+      {
+      null,
+      new FPInstructionDecoder("fucompp"),
+      null,
+      null,
+      null,
+      null,
+      null,
+      null
+      },
+      /* db_4 */
+      {
+      new FPInstructionDecoder("feni(287 only)"),
+      new FPInstructionDecoder("fdisi(287 only)"),
+      new FPInstructionDecoder("fNclex"),
+      new FPInstructionDecoder("fNinit"),
+      new FPInstructionDecoder("fNsetpm(287 only)"),
+      null,
+      null,
+      null
+      },
+      /* de_3 */
+      {
+      null,
+      new FPInstructionDecoder("fcompp"),
+      null,
+      null,
+      null,
+      null,
+      null,
+      null
+      },
+      /* df_4 */
+      {
+      new FPInstructionDecoder("fNstsw"),
+      null,
+      null,
+      null,
+      null,
+      null,
+      null,
+      null
+      }
+   };
+
+   public FloatGRPDecoder(String name, int number) {
+      super(name);
+      this.number = number;
+   }
+
+   public Instruction decode(byte[] bytesArray, int index, int instrStartIndex, int segmentOverride, int prefixes, X86InstructionFactory factory) {
+      this.byteIndex = index;
+      this.instrStartIndex = instrStartIndex;
+      this.prefixes = prefixes;
+
+      int ModRM = readByte(bytesArray, byteIndex);
+      int rm = ModRM & 7;
+
+      FPInstructionDecoder instrDecoder = null;
+      instrDecoder = floatGRPMap[number][rm];
+
+      Instruction instr = null;
+      if(instrDecoder != null) {
+         instr = instrDecoder.decode(bytesArray, byteIndex, instrStartIndex, segmentOverride, prefixes, factory);
+         byteIndex = instrDecoder.getCurrentIndex();
+      } else {
+         instr = factory.newIllegalInstruction();
+      }
+      return instr;
+   }
+}