From 79e01e7e643c9337d8d6046b6db7df674475a099 Mon Sep 17 00:00:00 2001
From: Getz Mikalsen <getz@FreeBSD.org>
Date: Wed, 28 Aug 2024 15:13:45 +0200
Subject: [PATCH] lib/libc/aarch64/string: add bcopy & bzero wrapper

This patch enabled usage of SIMD enhanced functions to implement
bcopy and bzero.

Tested by:	fuz (exprun)
Reviewed by:	fuz, emaste
Sponsored by:	Google LLC (GSoC 2024)
PR:		281175
Differential Revision: https://reviews.freebsd.org/D46459
---
 lib/libc/aarch64/string/Makefile.inc |  4 +++-
 lib/libc/aarch64/string/bcopy.c      | 14 ++++++++++++++
 lib/libc/aarch64/string/bzero.c      | 14 ++++++++++++++
 3 files changed, 31 insertions(+), 1 deletion(-)
 create mode 100644 lib/libc/aarch64/string/bcopy.c
 create mode 100644 lib/libc/aarch64/string/bzero.c

diff --git a/lib/libc/aarch64/string/Makefile.inc b/lib/libc/aarch64/string/Makefile.inc
index 7325b54d971..752cc6d9900 100644
--- a/lib/libc/aarch64/string/Makefile.inc
+++ b/lib/libc/aarch64/string/Makefile.inc
@@ -30,7 +30,9 @@ MDSRCS+= \
 	memccpy.S \
 	strncat.c \
 	strlcat.c \
-	strlen.S
+	strlen.S \
+	bcopy.c \
+	bzero.c
 
 #
 # Add the above functions. Generate an asm file that includes the needed
diff --git a/lib/libc/aarch64/string/bcopy.c b/lib/libc/aarch64/string/bcopy.c
new file mode 100644
index 00000000000..0dee529fb9d
--- /dev/null
+++ b/lib/libc/aarch64/string/bcopy.c
@@ -0,0 +1,14 @@
+/*-
+ * Public domain.
+ */
+
+#include <string.h>
+
+#undef bcopy	/* _FORTIFY_SOURCE */
+
+void
+bcopy(const void *src, void *dst, size_t len)
+{
+
+	memmove(dst, src, len);
+}
diff --git a/lib/libc/aarch64/string/bzero.c b/lib/libc/aarch64/string/bzero.c
new file mode 100644
index 00000000000..d82f3061865
--- /dev/null
+++ b/lib/libc/aarch64/string/bzero.c
@@ -0,0 +1,14 @@
+/*-
+ * Public domain.
+ */
+
+#include <string.h>
+
+#undef bzero	/* _FORTIFY_SOURCE */
+
+void
+bzero(void *b, size_t len)
+{
+
+	memset(b, 0, len);
+}