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annotate src/lib-ntlm/ntlm-byteorder.h @ 4379:70f95d997c3b HEAD

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X68_64 CPU can do little-endian accesses itself. This patch updates ntlm-byteorder.h to reflect this fact. Patch by Andrey Panin.
author Timo Sirainen <tss@iki.fi>
date Fri, 16 Jun 2006 13:26:13 +0300
parents fcfd44f56b04
children f8d37e26a2b3
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1 /*
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2 * Little-endian data access functions.
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3 *
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4 * Copyright (c) 2004 Andrey Panin <pazke@donpac.ru>
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5 *
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6 * This library is free software; you can redistribute it and/or modify
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7 * it under the terms of the GNU Lesser General Public License as published
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8 * by the Free Software Foundation; either version 2 of the License, or
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9 * (at your option) any later version.
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10 */
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11
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12 #ifndef __NTLM_BYTEORDER_H__
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13 #define __NTLM_BYTEORDER_H__
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14
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15 #if defined(__i386__) || defined(__x86_64__) || defined(__vax__)
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16
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17 static inline uint16_t read_le16(const void *addr)
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18 {
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19 return *((const uint16_t *) addr);
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20 }
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21
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22 static inline uint32_t read_le32(const void *addr)
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23 {
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24 return *((const uint32_t *) addr);
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25 }
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26
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27 static inline uint64_t read_le64(const void *addr)
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28 {
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29 return *((const uint64_t *) addr);
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30 }
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31
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32 static inline void write_le16(void *addr, const uint16_t value)
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33 {
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34 *((uint16_t *) addr) = value;
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35 }
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36
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37 static inline void write_le32(void *addr, const uint32_t value)
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38 {
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39 *((uint32_t *) addr) = value;
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40 }
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41
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42 static inline void write_le64(void *addr, const uint64_t value)
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43 {
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44 *((uint64_t *) addr) = value;
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45 }
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46
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47 #else
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48
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49 /*
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50 * Dumb and slow, but byteorder and alignment independent code.
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51 */
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52
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53 #define readb(addr, pos, type) ((type)(*(((uint8_t *) (addr)) + (pos))))
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54
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55 static inline uint16_t read_le16(const void *addr)
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56 {
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57 return readb(addr, 0, uint16_t) | (readb(addr, 1, uint16_t) << 8);
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58 }
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59
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60 static inline uint32_t read_le32(const void *addr)
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61 {
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62 return readb(addr, 0, uint32_t) |
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63 (readb(addr, 1, uint32_t) << 8) |
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64 (readb(addr, 2, uint32_t) << 16) |
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65 (readb(addr, 3, uint32_t) << 24);
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66 }
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67
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68 static inline uint64_t read_le64(const void *addr)
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69 {
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70 return readb(addr, 0, uint64_t) |
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71 (readb(addr, 1, uint64_t) << 8) |
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72 (readb(addr, 2, uint64_t) << 16) |
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73 (readb(addr, 3, uint64_t) << 24) |
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74 (readb(addr, 4, uint64_t) << 32) |
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75 (readb(addr, 5, uint64_t) << 40) |
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76 (readb(addr, 6, uint64_t) << 48) |
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77 (readb(addr, 7, uint64_t) << 56);
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78 }
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79
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80 #define writeb(addr, pos, value) \
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81 *(((uint8_t *)(addr)) + (pos)) = (uint8_t) (value)
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82
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83 static inline void write_le16(void *addr, const uint16_t value)
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84 {
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85 writeb(addr, 0, value & 0xff);
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86 writeb(addr, 1, (value >> 8) & 0xff);
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87 }
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88
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89 static inline void write_le32(void *addr, const uint32_t value)
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90 {
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91 writeb(addr, 0, value & 0xff);
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92 writeb(addr, 1, (value >> 8) & 0xff);
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93 writeb(addr, 2, (value >> 16) & 0xff);
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94 writeb(addr, 3, (value >> 24) & 0xff);
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95 }
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96
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97 static inline void write_le64(void *addr, const uint64_t value)
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98 {
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99 writeb(addr, 0, value & 0xff);
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100 writeb(addr, 1, (value >> 8) & 0xff);
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101 writeb(addr, 2, (value >> 16) & 0xff);
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102 writeb(addr, 3, (value >> 24) & 0xff);
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103 writeb(addr, 4, (value >> 32) & 0xff);
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104 writeb(addr, 5, (value >> 40) & 0xff);
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105 writeb(addr, 6, (value >> 48) & 0xff);
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106 writeb(addr, 7, (value >> 56) & 0xff);
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107 }
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108
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109 #endif
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110
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111 #endif /* __NTLM_BYTEORDER_H__ */