Add a file missed in r339321

Approved by:	re (implicit)
Sad face: mjg

sys/kern/subr_early.c

@@ -0,0 +1,76 @@
+/*-
+ * Copyright (c) 2018 The FreeBSD Foundation
+ *
+ * This software was developed by Mateusz Guzik <mjg@FreeBSD.org>
+ * under sponsorship from the FreeBSD Foundation.
+ *
+ * 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.
+ *
+ * $FreeBSD$
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <sys/types.h>
+#include <sys/systm.h>
+#include <machine/cpu.h>
+
+#ifndef	MEMSET_EARLY_FUNC
+#define	MEMSET_EARLY_FUNC	memset
+#else
+void *MEMSET_EARLY_FUNC(void *, int, size_t);
+#endif
+
+void *
+memset_early(void *buf, int c, size_t len)
+{
+
+	return (MEMSET_EARLY_FUNC(buf, c, len));
+}
+
+#ifndef	MEMCPY_EARLY_FUNC
+#define	MEMCPY_EARLY_FUNC	memcpy
+#else
+void *MEMCPY_EARLY_FUNC(void *, const void *, size_t);
+#endif
+
+void *
+memcpy_early(void *to, const void *from, size_t len)
+{
+
+	return (MEMCPY_EARLY_FUNC(to, from, len));
+}
+
+#ifndef	MEMMOVE_EARLY_FUNC
+#define	MEMMOVE_EARLY_FUNC	memmove
+#else
+void *MEMMOVE_EARLY_FUNC(void *, const void *, size_t);
+#endif
+
+void *
+memmove_early(void *to, const void *from, size_t len)
+{
+
+	return (MEMMOVE_EARLY_FUNC(to, from, len));
+}