usr/src/head/endian.h

   1 /*
   2  * This file and its contents are supplied under the terms of the
   3  * Common Development and Distribution License ("CDDL"), version 1.0.
   4  * You may only use this file in accordance with the terms of version
   5  * 1.0 of the CDDL.
   6  *
   7  * A full copy of the text of the CDDL should have accompanied this
   8  * source.  A copy of the CDDL is also available via the Internet at
   9  * http://www.illumos.org/license/CDDL.
  10  */
  11
  12 /*
  13  * Copyright 2016 Joyent, Inc.
  14  */
  15
  16 #ifndef _ENDIAN_H
  17 #define _ENDIAN_H
  18
  19 /*
  20  * Endian conversion routines, see endian(3C)
  21  */
  22
  23 #ifdef __cplusplus
  24 extern "C" {
  25 #endif
  26
  27 #include <sys/isa_defs.h>
  28 #include <inttypes.h>
  29
  30 #define __LITTLE_ENDIAN 1234
  31 #define __BIG_ENDIAN    4321
  32 #define __PDP_ENDIAN    3412
  33
  34 #if     defined(_LITTLE_ENDIAN)
  35 #define __BYTE_ORDER    LITTLE_ENDIAN
  36 #elif   defined(_BIG_ENDIAN)
  37 #define __BYTE_ORDER    BIG_ENDIAN
  38 #else
  39 #error  "Unknown byte order"
  40 #endif  /* _LITTLE_ENDIAN */
  41
  42 #define LITTLE_ENDIAN   __LITTLE_ENDIAN
  43 #define BIG_ENDIAN      __BIG_ENDIAN
  44 #define BYTE_ORDER      __BYTE_ORDER
  45
  46 extern uint16_t htobe16(uint16_t);
  47 extern uint32_t htobe32(uint32_t);
  48 extern uint64_t htobe64(uint64_t);
  49
  50 extern uint16_t htole16(uint16_t);
  51 extern uint32_t htole32(uint32_t);
  52 extern uint64_t htole64(uint64_t);
  53
  54 /* Supply both the old and new BSD names */
  55 extern uint16_t betoh16(uint16_t);
  56 extern uint16_t letoh16(uint16_t);
  57 extern uint16_t be16toh(uint16_t);
  58 extern uint16_t le16toh(uint16_t);
  59
  60 extern uint32_t betoh32(uint32_t);
  61 extern uint32_t letoh32(uint32_t);
  62 extern uint32_t be32toh(uint32_t);
  63 extern uint32_t le32toh(uint32_t);
  64
  65 extern uint64_t betoh64(uint64_t);
  66 extern uint64_t letoh64(uint64_t);
  67 extern uint64_t be64toh(uint64_t);
  68 extern uint64_t le64toh(uint64_t);
  69
  70 #ifdef __cplusplus
  71 }
  72 #endif
  73
  74 #endif /* _ENDIAN_H */