LXR linux-old/include/linux/byteorder/pdp

   1#ifndef _LINUX_BYTEORDER_PDP_ENDIAN_H
   2#define _LINUX_BYTEORDER_PDP_ENDIAN_H
   3
   4/*
   5 * Could have been named NUXI-endian, but we use the same name as in glibc.
   6 * hopefully only the PDP and its evolutions (old VAXen in compatibility mode)
   7 * should ever use this braindead byteorder.
   8 * This file *should* work, but has not been tested.
   9 *
  10 * little-endian is 1234; big-endian is 4321; nuxi/pdp-endian is 3412
  11 *
  12 * I thought vaxen were NUXI-endian, but was told they were correct-endian
  13 * (little-endian), though indeed there existed NUXI-endian machines
  14 * (DEC PDP-11 and old VAXen in compatibility mode).
  15 * This makes this file a bit useless, but as a proof-of-concept.
  16 *
  17 * But what does a __u64 look like: is it 34127856 or 78563412 ???
  18 * I don't dare imagine! Hence, no 64-bit byteorder support yet.
  19 * Hopefully, there 64-bit pdp-endian support shouldn't ever be required.
  20 *
  21 */
  22
  23#ifndef __PDP_ENDIAN
  24#define __PDP_ENDIAN 3412
  25#endif
  26#ifndef __PDP_ENDIAN_BITFIELD
  27#define __PDP_ENDIAN_BITFIELD
  28#endif
  29
  30#include <linux/byteorder/swab.h>
  31#include <linux/byteorder/swabb.h>
  32
  33#define __constant_htonl(x) ___constant_swahb32((x))
  34#define __constant_ntohl(x) ___constant_swahb32((x))
  35#define __constant_htons(x) ___constant_swab16((x))
  36#define __constant_ntohs(x) ___constant_swab16((x))
  37#define __constant_cpu_to_le64(x) I DON'T KNOW
  38#define __constant_le64_to_cpu(x) I DON'T KNOW
  39#define __constant_cpu_to_le32(x) ___constant_swahw32((x))
  40#define __constant_le32_to_cpu(x) ___constant_swahw32((x))
  41#define __constant_cpu_to_le16(x) ((__u16)(x)
  42#define __constant_le16_to_cpu(x) ((__u16)(x)
  43#define __constant_cpu_to_be64(x) I DON'T KNOW
  44#define __constant_be64_to_cpu(x) I DON'T KNOW
  45#define __constant_cpu_to_be32(x) ___constant_swahb32((x))
  46#define __constant_be32_to_cpu(x) ___constant_swahb32((x))
  47#define __constant_cpu_to_be16(x) ___constant_swab16((x))
  48#define __constant_be16_to_cpu(x) ___constant_swab16((x))
  49#define __cpu_to_le64(x) I DON'T KNOW
  50#define __le64_to_cpu(x) I DON'T KNOW
  51#define __cpu_to_le32(x) ___swahw32((x))
  52#define __le32_to_cpu(x) ___swahw32((x))
  53#define __cpu_to_le16(x) ((__u16)(x)
  54#define __le16_to_cpu(x) ((__u16)(x)
  55#define __cpu_to_be64(x) I DON'T KNOW
  56#define __be64_to_cpu(x) I DON'T KNOW
  57#define __cpu_to_be32(x) __swahb32((x))
  58#define __be32_to_cpu(x) __swahb32((x))
  59#define __cpu_to_be16(x) __swab16((x))
  60#define __be16_to_cpu(x) __swab16((x))
  61#define __cpu_to_le64p(x) I DON'T KNOW
  62#define __le64_to_cpup(x) I DON'T KNOW
  63#define __cpu_to_le32p(x) ___swahw32p((x))
  64#define __le32_to_cpup(x) ___swahw32p((x))
  65#define __cpu_to_le16p(x) (*(__u16*)(x))
  66#define __le16_to_cpup(x) (*(__u16*)(x))
  67#define __cpu_to_be64p(x) I DON'T KNOW
  68#define __be64_to_cpup(x) I DON'T KNOW
  69#define __cpu_to_be32p(x) __swahb32p((x))
  70#define __be32_to_cpup(x) __swahb32p((x))
  71#define __cpu_to_be16p(x) __swab16p((x))
  72#define __be16_to_cpup(x) __swab16p((x))
  73#define __cpu_to_le64s(x) I DON'T KNOW
  74#define __le64_to_cpus(x) I DON'T KNOW
  75#define __cpu_to_le32s(x) ___swahw32s((x))
  76#define __le32_to_cpus(x) ___swahw32s((x))
  77#define __cpu_to_le16s(x) do {} while (0)
  78#define __le16_to_cpus(x) do {} while (0)
  79#define __cpu_to_be64s(x) I DON'T KNOW
  80#define __be64_to_cpus(x) I DON'T KNOW
  81#define __cpu_to_be32s(x) __swahb32s((x))
  82#define __be32_to_cpus(x) __swahb32s((x))
  83#define __cpu_to_be16s(x) __swab16s((x))
  84#define __be16_to_cpus(x) __swab16s((x))
  85
  86#include <linux/byteorder/generic.h>
  87
  88#endif /* _LINUX_BYTEORDER_PDP_ENDIAN_H */
  89