.. | .. |
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10 | 10 | #ifndef _ASM_STRING_H |
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11 | 11 | #define _ASM_STRING_H |
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12 | 12 | |
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13 | | - |
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14 | | -/* |
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15 | | - * Most of the inline functions are rather naive implementations so I just |
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16 | | - * didn't bother updating them for 64-bit ... |
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17 | | - */ |
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18 | | -#ifdef CONFIG_32BIT |
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19 | | - |
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20 | | -#ifndef IN_STRING_C |
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21 | | - |
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22 | | -#define __HAVE_ARCH_STRCPY |
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23 | | -static __inline__ char *strcpy(char *__dest, __const__ char *__src) |
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24 | | -{ |
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25 | | - char *__xdest = __dest; |
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26 | | - |
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27 | | - __asm__ __volatile__( |
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28 | | - ".set\tnoreorder\n\t" |
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29 | | - ".set\tnoat\n" |
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30 | | - "1:\tlbu\t$1,(%1)\n\t" |
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31 | | - "addiu\t%1,1\n\t" |
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32 | | - "sb\t$1,(%0)\n\t" |
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33 | | - "bnez\t$1,1b\n\t" |
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34 | | - "addiu\t%0,1\n\t" |
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35 | | - ".set\tat\n\t" |
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36 | | - ".set\treorder" |
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37 | | - : "=r" (__dest), "=r" (__src) |
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38 | | - : "0" (__dest), "1" (__src) |
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39 | | - : "memory"); |
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40 | | - |
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41 | | - return __xdest; |
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42 | | -} |
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43 | | - |
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44 | | -#define __HAVE_ARCH_STRNCPY |
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45 | | -static __inline__ char *strncpy(char *__dest, __const__ char *__src, size_t __n) |
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46 | | -{ |
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47 | | - char *__xdest = __dest; |
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48 | | - |
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49 | | - if (__n == 0) |
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50 | | - return __xdest; |
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51 | | - |
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52 | | - __asm__ __volatile__( |
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53 | | - ".set\tnoreorder\n\t" |
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54 | | - ".set\tnoat\n" |
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55 | | - "1:\tlbu\t$1,(%1)\n\t" |
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56 | | - "subu\t%2,1\n\t" |
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57 | | - "sb\t$1,(%0)\n\t" |
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58 | | - "beqz\t$1,2f\n\t" |
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59 | | - "addiu\t%0,1\n\t" |
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60 | | - "bnez\t%2,1b\n\t" |
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61 | | - "addiu\t%1,1\n" |
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62 | | - "2:\n\t" |
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63 | | - ".set\tat\n\t" |
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64 | | - ".set\treorder" |
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65 | | - : "=r" (__dest), "=r" (__src), "=r" (__n) |
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66 | | - : "0" (__dest), "1" (__src), "2" (__n) |
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67 | | - : "memory"); |
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68 | | - |
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69 | | - return __xdest; |
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70 | | -} |
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71 | | - |
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72 | | -#define __HAVE_ARCH_STRCMP |
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73 | | -static __inline__ int strcmp(__const__ char *__cs, __const__ char *__ct) |
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74 | | -{ |
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75 | | - int __res; |
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76 | | - |
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77 | | - __asm__ __volatile__( |
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78 | | - ".set\tnoreorder\n\t" |
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79 | | - ".set\tnoat\n\t" |
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80 | | - "lbu\t%2,(%0)\n" |
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81 | | - "1:\tlbu\t$1,(%1)\n\t" |
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82 | | - "addiu\t%0,1\n\t" |
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83 | | - "bne\t$1,%2,2f\n\t" |
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84 | | - "addiu\t%1,1\n\t" |
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85 | | - "bnez\t%2,1b\n\t" |
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86 | | - "lbu\t%2,(%0)\n\t" |
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87 | | -#if defined(CONFIG_CPU_R3000) |
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88 | | - "nop\n\t" |
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89 | | -#endif |
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90 | | - "move\t%2,$1\n" |
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91 | | - "2:\tsubu\t%2,$1\n" |
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92 | | - "3:\t.set\tat\n\t" |
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93 | | - ".set\treorder" |
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94 | | - : "=r" (__cs), "=r" (__ct), "=r" (__res) |
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95 | | - : "0" (__cs), "1" (__ct)); |
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96 | | - |
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97 | | - return __res; |
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98 | | -} |
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99 | | - |
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100 | | -#endif /* !defined(IN_STRING_C) */ |
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101 | | - |
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102 | | -#define __HAVE_ARCH_STRNCMP |
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103 | | -static __inline__ int |
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104 | | -strncmp(__const__ char *__cs, __const__ char *__ct, size_t __count) |
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105 | | -{ |
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106 | | - int __res; |
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107 | | - |
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108 | | - __asm__ __volatile__( |
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109 | | - ".set\tnoreorder\n\t" |
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110 | | - ".set\tnoat\n" |
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111 | | - "1:\tlbu\t%3,(%0)\n\t" |
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112 | | - "beqz\t%2,2f\n\t" |
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113 | | - "lbu\t$1,(%1)\n\t" |
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114 | | - "subu\t%2,1\n\t" |
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115 | | - "bne\t$1,%3,3f\n\t" |
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116 | | - "addiu\t%0,1\n\t" |
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117 | | - "bnez\t%3,1b\n\t" |
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118 | | - "addiu\t%1,1\n" |
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119 | | - "2:\n\t" |
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120 | | -#if defined(CONFIG_CPU_R3000) |
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121 | | - "nop\n\t" |
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122 | | -#endif |
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123 | | - "move\t%3,$1\n" |
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124 | | - "3:\tsubu\t%3,$1\n\t" |
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125 | | - ".set\tat\n\t" |
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126 | | - ".set\treorder" |
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127 | | - : "=r" (__cs), "=r" (__ct), "=r" (__count), "=r" (__res) |
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128 | | - : "0" (__cs), "1" (__ct), "2" (__count)); |
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129 | | - |
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130 | | - return __res; |
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131 | | -} |
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132 | | -#endif /* CONFIG_32BIT */ |
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133 | | - |
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134 | 13 | #define __HAVE_ARCH_MEMSET |
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135 | 14 | extern void *memset(void *__s, int __c, size_t __count); |
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136 | 15 | |
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