From 76a2110b473c12eb7a9c9e5d15d54309db5f8b9c Mon Sep 17 00:00:00 2001
From: Sebastian Huber <sebastian.huber@embedded-brains.de>
Date: Mon, 18 Apr 2016 15:29:21 +0200
Subject: BSD compatibility for <machine/endian.h>

Introduce <machine/_endian.h> to let target based customization of
<machine/endian.h> via

 * _LITTLE_ENDIAN,
 * _BIG_ENDIAN,
 * _PDP_ENDIAN, and
 * _BYTE_ORDER.

defines.  Add definitions expected by FreeBSD to
<machine/endian.h> like

 * _QUAD_HIGHWORD,
 * _QUAD_LOWWORD,
 * __bswap16(),
 * __bswap32(),
 * __bswap64(),
 * __htonl(),
 * __htons(),
 * __ntohl(), and
 * __ntohs().

Also, if __BSD_VISIBLE

 * LITTLE_ENDIAN,
 * BIG_ENDIAN,
 * PDP_ENDIAN, and
 * BYTE_ORDER.

Targets that define __machine_host_to_from_network_defined in
<machine/_endian.h> must provide their own implementation of

 * __htonl(),
 * __htons(),
 * __ntohl(), and
 * __ntohs(),

otherwise a default implementation is provided by <machine/endian.h>.
In case of GCC defines to builtins are used.

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
---
 newlib/libc/include/machine/_endian.h | 35 +++++++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)
 create mode 100644 newlib/libc/include/machine/_endian.h

(limited to 'newlib/libc/include/machine/_endian.h')

diff --git a/newlib/libc/include/machine/_endian.h b/newlib/libc/include/machine/_endian.h
new file mode 100644
index 000000000..92a14dc8b
--- /dev/null
+++ b/newlib/libc/include/machine/_endian.h
@@ -0,0 +1,35 @@
+#ifndef __MACHINE_ENDIAN_H__
+#error "must be included via <machine/endian.h>"
+#endif /* !__MACHINE_ENDIAN_H__ */
+
+#include <sys/config.h>
+
+#ifdef __PPC__
+/* Get rid of GCC builtin defines on PowerPC */
+#ifdef _BIG_ENDIAN
+#undef _BIG_ENDIAN
+#endif
+#ifdef _LITTLE_ENDIAN
+#undef _LITTLE_ENDIAN
+#endif
+#endif /* __PPC__ */
+
+#ifndef _LITTLE_ENDIAN
+#define	_LITTLE_ENDIAN	1234
+#endif
+
+#ifndef _BIG_ENDIAN
+#define	_BIG_ENDIAN	4321
+#endif
+
+#ifndef _PDP_ENDIAN
+#define	_PDP_ENDIAN	3412
+#endif
+
+#ifndef _BYTE_ORDER
+#if defined(__IEEE_LITTLE_ENDIAN) || defined(__IEEE_BYTES_LITTLE_ENDIAN)
+#define	_BYTE_ORDER	_LITTLE_ENDIAN
+#else
+#define	_BYTE_ORDER	_BIG_ENDIAN
+#endif
+#endif
-- 
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