libmesosphere: use ARM-software/optimized-routines for memcpy/memset/memcmp

libraries/libmesosphere/source/libc/arch/arm64/asmdefs.h

@@ -0,0 +1,31 @@
+/*
+ * Macros for asm code.
+ *
+ * Copyright (c) 2019, Arm Limited.
+ * SPDX-License-Identifier: MIT
+ */
+
+#ifndef _ASMDEFS_H
+#define _ASMDEFS_H
+
+#define ENTRY_ALIGN(name, alignment)	\
+  .global name;		\
+  .type name,%function;	\
+  .align alignment;		\
+  name:			\
+  .cfi_startproc;
+
+#define ENTRY(name)	ENTRY_ALIGN(name, 6)
+
+#define ENTRY_ALIAS(name)	\
+  .global name;		\
+  .type name,%function;	\
+  name:
+
+#define END(name)	\
+  .cfi_endproc;		\
+  .size name, .-name;
+
+#define L(l) .L ## l
+
+#endif