27 lines
623 B
C
27 lines
623 B
C
/*
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* string.h
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*/
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#ifndef _STRING_H
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#define _STRING_H
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/* Standard routines */
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#define memcpy(a,b,c) __builtin_memcpy(a,b,c)
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#define memmove(a,b,c) __builtin_memmove(a,b,c)
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#define memset(a,b,c) __builtin_memset(a,b,c)
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#define strcpy(a,b) __builtin_strcpy(a,b)
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#define strlen(a) __builtin_strlen(a)
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/* This only returns true or false */
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static inline int memcmp(const void *__m1, const void *__m2, unsigned int __n)
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{
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_Bool rv;
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asm volatile ("cld ; repe ; cmpsb ; setne %0":"=abd" (rv), "+D"(__m1),
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"+S"(__m2), "+c"(__n));
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return rv;
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}
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extern char *strchr(const char *s, int c);
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#endif /* _STRING_H */
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