swab.h 3.1 KB

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  1. /*
  2. * Copyright (c) 2005 MontaVista Software, Inc.
  3. *
  4. * All rights reserved.
  5. *
  6. * This software licensed under BSD license, the text of which follows:
  7. *
  8. * Redistribution and use in source and binary forms, with or without
  9. * modification, are permitted provided that the following conditions are met:
  10. *
  11. * - Redistributions of source code must retain the above copyright notice,
  12. * this list of conditions and the following disclaimer.
  13. * - Redistributions in binary form must reproduce the above copyright notice,
  14. * this list of conditions and the following disclaimer in the documentation
  15. * and/or other materials provided with the distribution.
  16. * - Neither the name of the MontaVista Software, Inc. nor the names of its
  17. * contributors may be used to endorse or promote products derived from this
  18. * software without specific prior written permission.
  19. *
  20. * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  21. * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  22. * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  23. * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  24. * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  25. * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  26. * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  27. * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  28. * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  29. * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
  30. * THE POSSIBILITY OF SUCH DAMAGE.
  31. */
  32. #include <assert.h>
  33. #include <sys/mman.h>
  34. #include <sys/types.h>
  35. #include <sys/stat.h>
  36. #include <sys/socket.h>
  37. #include <netdb.h>
  38. #include <sys/un.h>
  39. #include <sys/sysinfo.h>
  40. #include <sys/ioctl.h>
  41. #include <netinet/in.h>
  42. #include <arpa/inet.h>
  43. #include <linux/if.h>
  44. #include <linux/sockios.h>
  45. #include <unistd.h>
  46. #include <fcntl.h>
  47. #include <stdlib.h>
  48. #include <stdio.h>
  49. #include <errno.h>
  50. #include <signal.h>
  51. #include <sched.h>
  52. #include <time.h>
  53. #include <sys/time.h>
  54. #include <sys/poll.h>
  55. #define swab16(x) \
  56. ({ \
  57. __u16 __x = (x); \
  58. ((__u16)( \
  59. (((__u16)(__x) & (__u16)0x00ffU) << 8) | \
  60. (((__u16)(__x) & (__u16)0xff00U) >> 8) )); \
  61. })
  62. #define swab32(x) \
  63. ({ \
  64. __u32 __x = (x); \
  65. ((__u32)( \
  66. (((__u32)(__x) & (__u32)0x000000ffUL) << 24) | \
  67. (((__u32)(__x) & (__u32)0x0000ff00UL) << 8) | \
  68. (((__u32)(__x) & (__u32)0x00ff0000UL) >> 8) | \
  69. (((__u32)(__x) & (__u32)0xff000000UL) >> 24) )); \
  70. })
  71. #define swab64(x) \
  72. ({ \
  73. __u64 __x = (x); \
  74. ((__u64)( \
  75. (__u64)(((__u64)(__x) & (__u64)0x00000000000000ffULL) << 56) | \
  76. (__u64)(((__u64)(__x) & (__u64)0x000000000000ff00ULL) << 40) | \
  77. (__u64)(((__u64)(__x) & (__u64)0x0000000000ff0000ULL) << 24) | \
  78. (__u64)(((__u64)(__x) & (__u64)0x00000000ff000000ULL) << 8) | \
  79. (__u64)(((__u64)(__x) & (__u64)0x000000ff00000000ULL) >> 8) | \
  80. (__u64)(((__u64)(__x) & (__u64)0x0000ff0000000000ULL) >> 24) | \
  81. (__u64)(((__u64)(__x) & (__u64)0x00ff000000000000ULL) >> 40) | \
  82. (__u64)(((__u64)(__x) & (__u64)0xff00000000000000ULL) >> 56) )); \
  83. })