diff options
| author | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2016-04-18 15:29:21 +0200 |
|---|---|---|
| committer | Corinna Vinschen <corinna@vinschen.de> | 2016-04-19 16:36:51 +0200 |
| commit | 76a2110b473c12eb7a9c9e5d15d54309db5f8b9c (patch) | |
| tree | bb66d54e37b313f2928f72e739abb25586f50532 /newlib/libc/include/machine/_endian.h | |
| parent | 7a5b4524431110fde4e9336f64ade73ab2c26b6b (diff) | |
| download | cygnal-76a2110b473c12eb7a9c9e5d15d54309db5f8b9c.tar.gz cygnal-76a2110b473c12eb7a9c9e5d15d54309db5f8b9c.tar.bz2 cygnal-76a2110b473c12eb7a9c9e5d15d54309db5f8b9c.zip | |
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>
Diffstat (limited to 'newlib/libc/include/machine/_endian.h')
| -rw-r--r-- | newlib/libc/include/machine/_endian.h | 35 |
1 files changed, 35 insertions, 0 deletions
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 |