include/linux/byteorder/pdp_endian.h

   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 */