--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/agent/src/share/classes/sun/jvm/hotspot/asm/x86/X86Registers.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,134 @@
+/*
+ * Copyright 2001 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.utilities.*;
+
+public class X86Registers {
+  public static final int NUM_REGISTERS = 8;
+
+   public static final X86Register EAX;
+   public static final X86Register ECX;
+   public static final X86Register EDX;
+   public static final X86Register EBX;
+   public static final X86Register ESP;
+   public static final X86Register EBP;
+   public static final X86Register ESI;
+   public static final X86Register EDI;
+
+   public static final X86Register AX;
+   public static final X86Register CX;
+   public static final X86Register DX;
+   public static final X86Register BX;
+   public static final X86Register SP;
+   public static final X86Register BP;
+   public static final X86Register SI;
+   public static final X86Register DI;
+
+   public static final X86Register AL;
+   public static final X86Register CL;
+   public static final X86Register DL;
+   public static final X86Register BL;
+   public static final X86Register AH;
+   public static final X86Register CH;
+   public static final X86Register DH;
+   public static final X86Register BH;
+
+   private static X86Register registers8[];
+   private static X86Register registers16[];
+   private static X86Register registers32[];
+
+   static {
+      EAX = new X86RegisterPart(0, "%eax", 0, 32);
+      ECX = new X86RegisterPart(1, "%ecx", 0, 32);
+      EDX = new X86RegisterPart(2, "%edx", 0, 32);
+      EBX = new X86RegisterPart(3, "%ebx", 0, 32);
+      ESP = new X86RegisterPart(4, "%esp", 0, 32);
+      EBP = new X86RegisterPart(5, "%ebp", 0, 32);
+      ESI = new X86RegisterPart(6, "%esi", 0, 32);
+      EDI = new X86RegisterPart(7, "%edi", 0, 32);
+
+      AX = new X86RegisterPart(0, "%ax", 0, 16);
+      CX = new X86RegisterPart(1, "%cx", 0, 16);
+      DX = new X86RegisterPart(2, "%dx", 0, 16);
+      BX = new X86RegisterPart(3, "%bx", 0, 16);
+      SP = new X86RegisterPart(4, "%sp", 0, 16);
+      BP = new X86RegisterPart(5, "%bp", 0, 16);
+      SI = new X86RegisterPart(6, "%si", 0, 16);
+      DI = new X86RegisterPart(7, "%di", 0, 16);
+
+      AL = new X86RegisterPart(0, "%al", 0, 8);
+      CL = new X86RegisterPart(1, "%cl", 0, 8);
+      DL = new X86RegisterPart(2, "%dl", 0, 8);
+      BL = new X86RegisterPart(3, "%bl", 0, 8);
+      AH = new X86RegisterPart(0, "%ah", 8, 8);
+      CH = new X86RegisterPart(1, "%ch", 8, 8);
+      DH = new X86RegisterPart(2, "%dh", 8, 8);
+      BH = new X86RegisterPart(3, "%bh", 8, 8);
+
+      registers32 = (new X86Register[] {
+            EAX, ECX, EDX, EBX, ESP, EBP, ESI, EDI
+      });
+      registers16 = (new X86Register[] {
+            AX, CX, DX, BX, SP, BP, SI, DI
+      });
+      registers8 = (new X86Register[] {
+            AL, CL, DL, BL, AH, CH, DH, BH
+      });
+   }
+
+   public static int getNumberOfRegisters() {
+      return NUM_REGISTERS;
+   }
+
+   public static X86Register getRegister8(int regNum) {
+      if (Assert.ASSERTS_ENABLED) {
+         Assert.that(regNum > -1 && regNum < NUM_REGISTERS, "invalid integer register number!");
+      }
+      return registers8[regNum];
+   }
+
+   public static X86Register getRegister16(int regNum) {
+      if (Assert.ASSERTS_ENABLED) {
+         Assert.that(regNum > -1 && regNum < NUM_REGISTERS, "invalid integer register number!");
+      }
+      return registers16[regNum];
+   }
+
+   public static X86Register getRegister32(int regNum) {
+      if (Assert.ASSERTS_ENABLED) {
+         Assert.that(regNum > -1 && regNum < NUM_REGISTERS, "invalid integer register number!");
+      }
+      return registers32[regNum];
+   }
+
+   //Return the 32bit register name
+   public static String getRegisterName(int regNum) {
+      if (Assert.ASSERTS_ENABLED) {
+         Assert.that(regNum > -1 && regNum < NUM_REGISTERS, "invalid integer register number!");
+      }
+      return registers32[regNum].toString();
+   }
+}