From e2abcdca396661cbe0ae2ddb13d5c2b85682c13a Mon Sep 17 00:00:00 2001
From: Cem Keylan <cem@ckyln.com>
Date: Fri, 16 Oct 2020 17:41:25 +0300
Subject: initial commit

---
 sys/sys/endian.h | 124 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 124 insertions(+)
 create mode 100644 sys/sys/endian.h

(limited to 'sys/sys/endian.h')

diff --git a/sys/sys/endian.h b/sys/sys/endian.h
new file mode 100644
index 0000000..29d5955
--- /dev/null
+++ b/sys/sys/endian.h
@@ -0,0 +1,124 @@
+/*	$OpenBSD: endian.h,v 1.25 2014/12/21 04:49:00 guenther Exp $	*/
+
+/*-
+ * Copyright (c) 1997 Niklas Hallqvist.  All rights reserved.
+ *
+ * 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 ``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 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.
+ */
+
+/*
+ * Public definitions for little- and big-endian systems.
+ * This file should be included as <endian.h> in userspace and as
+ * <sys/endian.h> in the kernel.
+ *
+ * System headers that need endian information but that can't or don't
+ * want to export the public names here should include <sys/_endian.h>
+ * and use the internal names: _BYTE_ORDER, _*_ENDIAN, etc.
+ */
+
+#ifndef _SYS_ENDIAN_H_
+#define _SYS_ENDIAN_H_
+
+#include <sys/cdefs.h>
+#include <sys/_endian.h>
+
+/* Public names */
+#define LITTLE_ENDIAN	_LITTLE_ENDIAN
+#define BIG_ENDIAN	_BIG_ENDIAN
+#define PDP_ENDIAN	_PDP_ENDIAN
+#define BYTE_ORDER	_BYTE_ORDER
+
+
+/*
+ * These are specified to be function-like macros to match the spec
+ */
+#define htobe16(x)	__htobe16(x)
+#define htobe32(x)	__htobe32(x)
+#define htobe64(x)	__htobe64(x)
+#define htole16(x)	__htole16(x)
+#define htole32(x)	__htole32(x)
+#define htole64(x)	__htole64(x)
+
+/* POSIX names */
+#define be16toh(x)	__htobe16(x)
+#define be32toh(x)	__htobe32(x)
+#define be64toh(x)	__htobe64(x)
+#define le16toh(x)	__htole16(x)
+#define le32toh(x)	__htole32(x)
+#define le64toh(x)	__htole64(x)
+
+
+#if __BSD_VISIBLE
+#define swap16(x) __swap16(x)
+#define swap32(x) __swap32(x)
+#define swap64(x) __swap64(x)
+
+#define swap16_multi(v, n) do {						\
+	__size_t __swap16_multi_n = (n);				\
+	__uint16_t *__swap16_multi_v = (v);				\
+									\
+	while (__swap16_multi_n) {					\
+		*__swap16_multi_v = swap16(*__swap16_multi_v);		\
+		__swap16_multi_v++;					\
+		__swap16_multi_n--;					\
+	}								\
+} while (0)
+
+/* original BSD names */
+#define betoh16(x)	__htobe16(x)
+#define betoh32(x)	__htobe32(x)
+#define betoh64(x)	__htobe64(x)
+#define letoh16(x)	__htole16(x)
+#define letoh32(x)	__htole32(x)
+#define letoh64(x)	__htole64(x)
+
+#ifndef htons
+/* these were exposed here before */
+#define htons(x)	__htobe16(x)
+#define htonl(x)	__htobe32(x)
+#define ntohs(x)	__htobe16(x)
+#define ntohl(x)	__htobe32(x)
+#endif
+
+/* ancient stuff */
+#define	NTOHL(x) (x) = ntohl((u_int32_t)(x))
+#define	NTOHS(x) (x) = ntohs((u_int16_t)(x))
+#define	HTONL(x) (x) = htonl((u_int32_t)(x))
+#define	HTONS(x) (x) = htons((u_int16_t)(x))
+#endif /* __BSD_VISIBLE */
+
+#ifdef _KERNEL
+/* to/from memory conversions */
+#define bemtoh16	__bemtoh16
+#define bemtoh32	__bemtoh32
+#define bemtoh64	__bemtoh64
+#define htobem16	__htobem16
+#define htobem32	__htobem32
+#define htobem64	__htobem64
+#define lemtoh16	__lemtoh16
+#define lemtoh32	__lemtoh32
+#define lemtoh64	__lemtoh64
+#define htolem16	__htolem16
+#define htolem32	__htolem32
+#define htolem64	__htolem64
+#endif /* _KERNEL */
+
+#endif /* _SYS_ENDIAN_H_ */
-- 
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