OpenWrt – Blame information for rev 1
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Rev | Author | Line No. | Line |
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1 | office | 1 | /* |
2 | * utils - misc libubox utility functions |
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3 | * |
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4 | * Copyright (C) 2012 Felix Fietkau <nbd@openwrt.org> |
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5 | * |
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6 | * Permission to use, copy, modify, and/or distribute this software for any |
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7 | * purpose with or without fee is hereby granted, provided that the above |
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8 | * copyright notice and this permission notice appear in all copies. |
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9 | * |
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10 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
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11 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
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12 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
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13 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
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14 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
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15 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
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16 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
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17 | */ |
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18 | |||
19 | #ifndef __LIBUBOX_UTILS_H |
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20 | #define __LIBUBOX_UTILS_H |
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21 | |||
22 | #include <sys/types.h> |
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23 | #include <stdint.h> |
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24 | #include <stdbool.h> |
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25 | |||
26 | #ifndef ARRAY_SIZE |
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27 | #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0])) |
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28 | #endif |
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29 | |||
30 | #ifdef __GNUC__ |
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31 | #define _GNUC_MIN_VER(maj, min) (((__GNUC__ << 8) + __GNUC_MINOR__) >= (((maj) << 8) + (min))) |
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32 | #else |
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33 | #define _GNUC_MIN_VER(maj, min) 0 |
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34 | #endif |
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35 | |||
36 | #if defined(__linux__) || defined(__CYGWIN__) |
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37 | #include <byteswap.h> |
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38 | #include <endian.h> |
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39 | |||
40 | #elif defined(__APPLE__) |
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41 | #include <machine/endian.h> |
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42 | #include <machine/byte_order.h> |
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43 | #define bswap_32(x) OSSwapInt32(x) |
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44 | #define bswap_64(x) OSSwapInt64(x) |
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45 | #elif defined(__FreeBSD__) |
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46 | #include <sys/endian.h> |
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47 | #define bswap_32(x) bswap32(x) |
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48 | #define bswap_64(x) bswap64(x) |
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49 | #else |
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50 | #include <machine/endian.h> |
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51 | #define bswap_32(x) swap32(x) |
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52 | #define bswap_64(x) swap64(x) |
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53 | #endif |
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54 | |||
55 | #ifndef __BYTE_ORDER |
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56 | #define __BYTE_ORDER BYTE_ORDER |
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57 | #endif |
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58 | #ifndef __BIG_ENDIAN |
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59 | #define __BIG_ENDIAN BIG_ENDIAN |
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60 | #endif |
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61 | #ifndef __LITTLE_ENDIAN |
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62 | #define __LITTLE_ENDIAN LITTLE_ENDIAN |
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63 | #endif |
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64 | |||
65 | static inline uint16_t __u_bswap16(uint16_t val) |
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66 | { |
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67 | return ((val >> 8) & 0xffu) | ((val & 0xffu) << 8); |
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68 | } |
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69 | |||
70 | #if _GNUC_MIN_VER(4, 2) |
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71 | #define __u_bswap32(x) __builtin_bswap32(x) |
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72 | #define __u_bswap64(x) __builtin_bswap64(x) |
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73 | #else |
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74 | #define __u_bswap32(x) bswap_32(x) |
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75 | #define __u_bswap64(x) bswap_64(x) |
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76 | #endif |
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77 | |||
78 | #if __BYTE_ORDER == __LITTLE_ENDIAN |
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79 | |||
80 | #define cpu_to_be64(x) __u_bswap64(x) |
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81 | #define cpu_to_be32(x) __u_bswap32(x) |
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82 | #define cpu_to_be16(x) __u_bswap16((uint16_t) (x)) |
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83 | |||
84 | #define be64_to_cpu(x) __u_bswap64(x) |
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85 | #define be32_to_cpu(x) __u_bswap32(x) |
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86 | #define be16_to_cpu(x) __u_bswap16((uint16_t) (x)) |
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87 | |||
88 | #define cpu_to_le64(x) (x) |
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89 | #define cpu_to_le32(x) (x) |
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90 | #define cpu_to_le16(x) (x) |
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91 | |||
92 | #define le64_to_cpu(x) (x) |
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93 | #define le32_to_cpu(x) (x) |
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94 | #define le16_to_cpu(x) (x) |
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95 | |||
96 | #else /* __BYTE_ORDER == __LITTLE_ENDIAN */ |
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97 | |||
98 | #define cpu_to_le64(x) __u_bswap64(x) |
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99 | #define cpu_to_le32(x) __u_bswap32(x) |
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100 | #define cpu_to_le16(x) __u_bswap16((uint16_t) (x)) |
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101 | |||
102 | #define le64_to_cpu(x) __u_bswap64(x) |
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103 | #define le32_to_cpu(x) __u_bswap32(x) |
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104 | #define le16_to_cpu(x) __u_bswap16((uint16_t) (x)) |
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105 | |||
106 | #define cpu_to_be64(x) (x) |
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107 | #define cpu_to_be32(x) (x) |
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108 | #define cpu_to_be16(x) (x) |
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109 | |||
110 | #define be64_to_cpu(x) (x) |
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111 | #define be32_to_cpu(x) (x) |
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112 | #define be16_to_cpu(x) (x) |
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113 | |||
114 | #endif |
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115 | |||
116 | #endif |