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diff --git a/src/arch/arm/registers.hh b/src/arch/arm/registers.hh
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+/*
+ * Copyright (c) 2007-2008 The Florida State University
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met: redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer;
+ * redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution;
+ * neither the name of the copyright holders nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Authors: Stephen Hines
+ */
+
+#ifndef __ARCH_ARM_REGISTERS_HH__
+#define __ARCH_ARM_REGISTERS_HH__
+
+#include "arch/arm/max_inst_regs.hh"
+#include "arch/arm/miscregs.hh"
+
+namespace ArmISA {
+
+using ArmISAInst::MaxInstSrcRegs;
+using ArmISAInst::MaxInstDestRegs;
+
+typedef uint8_t  RegIndex;
+
+typedef uint64_t IntReg;
+
+// floating point register file entry type
+typedef uint32_t FloatRegBits;
+typedef float FloatReg;
+
+// cop-0/cop-1 system control register
+typedef uint64_t MiscReg;
+
+// Constants Related to the number of registers
+const int NumIntArchRegs = 16;
+const int NumIntSpecialRegs = 19;
+const int NumFloatArchRegs = 16;
+const int NumFloatSpecialRegs = 5;
+const int NumInternalProcRegs = 0;
+
+const int NumIntRegs = NumIntArchRegs + NumIntSpecialRegs;
+const int NumFloatRegs = NumFloatArchRegs + NumFloatSpecialRegs;
+
+const int NumMiscRegs = NUM_MISCREGS;
+
+
+// semantically meaningful register indices
+const int ReturnValueReg = 0;
+const int ReturnValueReg1 = 1;
+const int ReturnValueReg2 = 2;
+const int ArgumentReg0 = 0;
+const int ArgumentReg1 = 1;
+const int ArgumentReg2 = 2;
+const int ArgumentReg3 = 3;
+const int FramePointerReg = 11;
+const int StackPointerReg = 13;
+const int ReturnAddressReg = 14;
+const int PCReg = 15;
+
+const int ZeroReg = NumIntArchRegs;
+const int AddrReg = ZeroReg + 1; // Used to generate address for uops
+
+const int SyscallNumReg = ReturnValueReg;
+const int SyscallPseudoReturnReg = ReturnValueReg;
+const int SyscallSuccessReg = ReturnValueReg;
+
+// These help enumerate all the registers for dependence tracking.
+const int FP_Base_DepTag = NumIntRegs;
+const int Ctrl_Base_DepTag = FP_Base_DepTag + NumFloatRegs;
+
+typedef union {
+    IntReg   intreg;
+    FloatReg fpreg;
+    MiscReg  ctrlreg;
+} AnyReg;
+
+enum FPControlRegNums {
+   FIR = NumFloatArchRegs,
+   FCCR,
+   FEXR,
+   FENR,
+   FCSR
+};
+
+enum FCSRBits {
+    Inexact = 1,
+    Underflow,
+    Overflow,
+    DivideByZero,
+    Invalid,
+    Unimplemented
+};
+
+enum FCSRFields {
+    Flag_Field = 1,
+    Enable_Field = 6,
+    Cause_Field = 11
+};
+
+enum MiscIntRegNums {
+    zero_reg = NumIntArchRegs,
+    addr_reg,
+
+    rhi,
+    rlo,
+
+    r8_fiq,    /* FIQ mode register bank */
+    r9_fiq,
+    r10_fiq,
+    r11_fiq,
+    r12_fiq,
+
+    r13_fiq,   /* FIQ mode SP and LR */
+    r14_fiq,
+
+    r13_irq,   /* IRQ mode SP and LR */
+    r14_irq,
+
+    r13_svc,   /* SVC mode SP and LR */
+    r14_svc,
+
+    r13_undef, /* UNDEF mode SP and LR */
+    r14_undef,
+
+    r13_abt,   /* ABT mode SP and LR */
+    r14_abt
+};
+
+} // namespace ArmISA
+
+#endif