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diff --git a/cpukit/score/cpu/aarch64/include/rtems/asm.h b/cpukit/score/cpu/aarch64/include/rtems/asm.h
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+/* SPDX-License-Identifier: BSD-2-Clause */
+
+/**
+ * @file
+ *
+ * @brief AArch64 Assembler Support API
+ *
+ * This include file attempts to address the problems
+ * caused by incompatible flavors of assemblers and
+ * toolsets.  It primarily addresses variations in the
+ * use of leading underscores on symbols and the requirement
+ * that register names be preceded by a %.
+ *
+ *
+ * NOTE: The spacing in the use of these macros
+ *       is critical to them working as advertised.
+ */
+
+/*
+ * Copyright (C) 2020 On-Line Applications Research Corporation (OAR)
+ * Written by Kinsey Moore <kinsey.moore@oarcorp.com>
+ *
+ * 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.
+ *
+ * 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.
+ */
+
+#ifndef _RTEMS_ASM_H
+#define _RTEMS_ASM_H
+
+/*
+ *  Indicate we are in an assembly file and get the basic CPU definitions.
+ */
+
+#ifndef ASM
+#define ASM
+#endif
+#include <rtems/score/percpu.h>
+
+/**
+ * @defgroup RTEMSScoreCPUAArch64ASM AArch64 Assembler Support
+ *
+ * @ingroup RTEMSScoreCPUAArch64
+ *
+ * @brief AArch64 Assembler Support
+ */
+/**@{**/
+
+/*
+ *  Following must be tailor for a particular flavor of the C compiler.
+ *  They may need to put underscores in front of the symbols.
+ */
+
+#define FUNCTION_ENTRY(name) \
+  .align 8; \
+  .globl name; \
+  .type name, %function; \
+  name:
+
+#define FUNCTION_END(name) \
+  .size name, . - name
+
+#define DEFINE_FUNCTION_AARCH64(name) \
+  .align 8 ; .globl name ; name: ; .globl name ## _aarch64 ; name ## _aarch64:
+
+.macro GET_SELF_CPU_CONTROL REG
+	ldr	\REG, =_Per_CPU_Information
+.endm
+
+/** @} */
+
+#endif /* _RTEMS_ASM_H */