| .. | .. |
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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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