libc/aarch64: Use MOPS implementations of memcpy/memmove/memset where availble

Reviewed by:	andrew
Sponsored by:	Arm Ltd
Differential Revision:	https://reviews.freebsd.org/D54560

lib/libc/aarch64/string/Makefile.inc

@@ -5,10 +5,8 @@
 
 AARCH64_STRING_FUNCS= \
 	memcmp \
-	memcpy \
 	memmove \
 	memrchr \
-	memset \
 	stpcpy \
 	strchr \
 	strchrnul \
@@ -34,7 +32,12 @@ MDSRCS+= \
 	timingsafe_bcmp.S \
 	timingsafe_memcmp.S \
 	bcopy.c \
-	bzero.c
+	bzero.c \
+	memcpy.S \
+	memcpy_resolver.c \
+	memmove_resolver.c \
+	memset.S \
+	memset_resolver.c
 
 #
 # Add the above functions. Generate an asm file that includes the needed
@@ -55,6 +58,8 @@ MDSRCS+=	${FUNC}.S
 CFLAGS.${FUNC}.S+=-I${SRCTOP}/contrib/arm-optimized-routines/string
 .endfor
 
-# memchr.S is a wrapper in the src tree for the implementation from
+# Several files are wrappers in the src tree for the implementation from
 # arm-optimized-routines
 CFLAGS.memchr.S+=-I${SRCTOP}/contrib/arm-optimized-routines/string
+CFLAGS.memcpy.S+=-I${SRCTOP}/contrib/arm-optimized-routines/string
+CFLAGS.memset.S+=-I${SRCTOP}/contrib/arm-optimized-routines/string

lib/libc/aarch64/string/memcpy.S

@@ -1,3 +1,3 @@
-#define	__memcpy_aarch64_simd	memcpy
-#define	__memmove_aarch64_simd	memmove
 #include "aarch64/memcpy-advsimd.S"
+#include "aarch64/memcpy-mops.S"
+#include "aarch64/memmove-mops.S"

lib/libc/aarch64/string/memcpy_resolver.c

@@ -0,0 +1,42 @@
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause
+ *
+ * Copyright (c) 2026 Arm Ltd
+ *
+ * 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 AUTHOR 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 AUTHOR 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.
+ */
+#include <sys/types.h>
+#include <machine/ifunc.h>
+
+#include <elf.h>
+
+void *__memcpy_aarch64_simd(void *, const void *, size_t);
+void *__memcpy_aarch64_mops(void *, const void *, size_t);
+
+DEFINE_UIFUNC(, void *, memcpy, (void *, const void *, size_t))
+{
+	if (ifunc_arg->_hwcap2 & HWCAP2_MOPS)
+		return (__memcpy_aarch64_mops);
+
+	return (__memcpy_aarch64_simd);
+}
+

lib/libc/aarch64/string/memmove_resolver.c

@@ -0,0 +1,42 @@
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause
+ *
+ * Copyright (c) 2026 Arm Ltd
+ *
+ * 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 AUTHOR 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 AUTHOR 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.
+ */
+#include <sys/types.h>
+#include <machine/ifunc.h>
+
+#include <elf.h>
+
+void *__memmove_aarch64_simd(void *, const void *, size_t);
+void *__memmove_aarch64_mops(void *, const void *, size_t);
+
+DEFINE_UIFUNC(, void *, memmove, (void *, const void *, size_t))
+{
+	if (ifunc_arg->_hwcap2 & HWCAP2_MOPS)
+		return (__memmove_aarch64_mops);
+
+	return (__memmove_aarch64_simd);
+}
+

lib/libc/aarch64/string/memset.S

@@ -0,0 +1,2 @@
+#include "aarch64/memset.S"
+#include "aarch64/memset-mops.S"

lib/libc/aarch64/string/memset_resolver.c

@@ -0,0 +1,42 @@
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause
+ *
+ * Copyright (c) 2026 Arm Ltd
+ *
+ * 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 AUTHOR 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 AUTHOR 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.
+ */
+#include <sys/types.h>
+#include <machine/ifunc.h>
+
+#include <elf.h>
+
+void *__memset_aarch64(void *, int, size_t);
+void *__memset_aarch64_mops(void *, int, size_t);
+
+DEFINE_UIFUNC(, void *, memset, (void *, int, size_t))
+{
+	if (ifunc_arg->_hwcap2 & HWCAP2_MOPS)
+		return (__memset_aarch64_mops);
+
+	return (__memset_aarch64);
+}
+