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diff --git a/src/arch/sparc/registers.hh b/src/arch/sparc/registers.hh
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+/*
+ * Copyright (c) 2003-2005 The Regents of The University of Michigan
+ * 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: Gabe Black
+ *          Ali Saidi
+ */
+
+#ifndef __ARCH_SPARC_REGISTERS_HH__
+#define __ARCH_SPARC_REGISTERS_HH__
+
+#include "arch/sparc/max_inst_regs.hh"
+#include "arch/sparc/miscregs.hh"
+#include "arch/sparc/sparc_traits.hh"
+#include "base/types.hh"
+
+namespace SparcISA
+{
+    using SparcISAInst::MaxInstSrcRegs;
+    using SparcISAInst::MaxInstDestRegs;
+
+    typedef uint64_t IntReg;
+    typedef uint64_t MiscReg;
+    typedef float FloatReg;
+    typedef uint32_t FloatRegBits;
+    typedef union
+    {
+        IntReg intReg;
+        FloatReg fpreg;
+        MiscReg ctrlreg;
+    } AnyReg;
+
+    typedef uint16_t RegIndex;
+
+    // These enumerate all the registers for dependence tracking.
+    enum DependenceTags {
+        FP_Base_DepTag = 32*3+9,
+        Ctrl_Base_DepTag = FP_Base_DepTag + 64
+    };
+
+    // semantically meaningful register indices
+    const int ZeroReg = 0;      // architecturally meaningful
+    // the rest of these depend on the ABI
+    const int ReturnAddressReg = 31; // post call, precall is 15
+    const int ReturnValueReg = 8;  // Post return, 24 is pre-return.
+    const int StackPointerReg = 14;
+    const int FramePointerReg = 30;
+
+    // Some OS syscall use a second register (o1) to return a second value
+    const int SyscallPseudoReturnReg = 9;
+
+    const int NumIntArchRegs = 32;
+    const int NumIntRegs = (MaxGL + 1) * 8 + NWindows * 16 + NumMicroIntRegs;
+
+} // namespace SparcISA
+
+#endif