1 files changed, 67 insertions, 0 deletions
diff --git a/MdePkg/Library/CompilerIntrinsicsLib/memcpy.c b/MdePkg/Library/CompilerIntrinsicsLib/memcpy.c
new file mode 100644
index 0000000000..415146f7f2
--- /dev/null
+++ b/MdePkg/Library/CompilerIntrinsicsLib/memcpy.c
@@ -0,0 +1,67 @@
+// ------------------------------------------------------------------------------
+//
+// Copyright (c) 2016, Linaro Ltd. All rights reserved.<BR>
+// Copyright (c) 2021, Arm Limited. All rights reserved.<BR>
+//
+// SPDX-License-Identifier: BSD-2-Clause-Patent
+//
+// ------------------------------------------------------------------------------
+
+typedef __SIZE_TYPE__ size_t;
+
+static void
+__memcpy (
+  void        *dest,
+  const void  *src,
+  size_t      n
+  )
+{
+  unsigned char        *d;
+  unsigned char const  *s;
+
+  d = dest;
+  s = src;
+
+  while (n-- != 0) {
+    *d++ = *s++;
+  }
+}
+
+void *
+memcpy (
+  void        *dest,
+  const void  *src,
+  size_t      n
+  )
+{
+  __memcpy (dest, src, n);
+  return dest;
+}
+
+#ifdef __arm__
+
+__attribute__ ((__alias__ ("__memcpy")))
+void
+__aeabi_memcpy (
+  void        *dest,
+  const void  *src,
+  size_t      n
+  );
+
+__attribute__ ((__alias__ ("__memcpy")))
+void
+__aeabi_memcpy4 (
+  void        *dest,
+  const void  *src,
+  size_t      n
+  );
+
+__attribute__ ((__alias__ ("__memcpy")))
+void
+__aeabi_memcpy8 (
+  void        *dest,
+  const void  *src,
+  size_t      n
+  );
+
+#endif