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diff --git a/src/sim/aux_vector.hh b/src/sim/aux_vector.hh
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+/*
+ * Copyright (c) 2016 Advanced Micro Devices, Inc.
+ * All rights reserved.
+ *
+ * For use for simulation and test purposes only
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ *
+ * 2. 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.
+ *
+ * 3. Neither the name of the copyright holder 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 HOLDER 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.
+ *
+ * Author: Brandon Potter
+ */
+
+#ifndef __AUX_VECTOR_HH__
+#define __AUX_VECTOR_HH__
+
+template<class IntType>
+struct AuxVector
+{
+    IntType a_type;
+    IntType a_val;
+
+    AuxVector()
+    {}
+
+    AuxVector(IntType type, IntType val);
+};
+
+enum AuxiliaryVectorType {
+    M5_AT_NULL = 0,
+    M5_AT_IGNORE = 1,
+    M5_AT_EXECFD = 2,
+    M5_AT_PHDR = 3,
+    M5_AT_PHENT = 4,
+    M5_AT_PHNUM = 5,
+    M5_AT_PAGESZ = 6,
+    M5_AT_BASE = 7,
+    M5_AT_FLAGS = 8,
+    M5_AT_ENTRY = 9,
+    M5_AT_NOTELF = 10,
+    M5_AT_UID = 11,
+    M5_AT_EUID = 12,
+    M5_AT_GID = 13,
+    M5_AT_EGID = 14,
+    M5_AT_PLATFORM = 15,
+    M5_AT_HWCAP = 16,
+    M5_AT_CLKTCK = 17,
+    M5_AT_SECURE = 23,
+    M5_BASE_PLATFORM = 24,
+    M5_AT_RANDOM = 25,
+    M5_AT_EXECFN = 31,
+    M5_AT_VECTOR_SIZE = 44
+};
+
+#endif // __AUX_VECTOR_HH__