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102 lines
2.2 KiB
102 lines
2.2 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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#ifndef __ASM_SH_STRING_H |
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#define __ASM_SH_STRING_H |
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/* |
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* Copyright (C) 1999 Niibe Yutaka |
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* But consider these trivial functions to be public domain. |
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*/ |
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#define __HAVE_ARCH_STRCPY |
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static inline char *strcpy(char *__dest, const char *__src) |
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{ |
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register char *__xdest = __dest; |
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unsigned long __dummy; |
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__asm__ __volatile__("1:\n\t" |
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"mov.b @%1+, %2\n\t" |
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"mov.b %2, @%0\n\t" |
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"cmp/eq #0, %2\n\t" |
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"bf/s 1b\n\t" |
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" add #1, %0\n\t" |
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: "=r" (__dest), "=r" (__src), "=&z" (__dummy) |
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: "0" (__dest), "1" (__src) |
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: "memory", "t"); |
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return __xdest; |
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} |
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#define __HAVE_ARCH_STRCMP |
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static inline int strcmp(const char *__cs, const char *__ct) |
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{ |
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register int __res; |
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unsigned long __dummy; |
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__asm__ __volatile__( |
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"mov.b @%1+, %3\n" |
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"1:\n\t" |
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"mov.b @%0+, %2\n\t" |
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"cmp/eq #0, %3\n\t" |
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"bt 2f\n\t" |
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"cmp/eq %2, %3\n\t" |
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"bt/s 1b\n\t" |
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" mov.b @%1+, %3\n\t" |
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"add #-2, %1\n\t" |
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"mov.b @%1, %3\n\t" |
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"sub %3, %2\n" |
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"2:" |
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: "=r" (__cs), "=r" (__ct), "=&r" (__res), "=&z" (__dummy) |
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: "0" (__cs), "1" (__ct) |
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: "t"); |
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return __res; |
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} |
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#define __HAVE_ARCH_STRNCMP |
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static inline int strncmp(const char *__cs, const char *__ct, size_t __n) |
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{ |
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register int __res; |
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unsigned long __dummy; |
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if (__n == 0) |
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return 0; |
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__asm__ __volatile__( |
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"mov.b @%1+, %3\n" |
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"1:\n\t" |
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"mov.b @%0+, %2\n\t" |
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"cmp/eq %6, %0\n\t" |
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"bt/s 2f\n\t" |
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" cmp/eq #0, %3\n\t" |
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"bt/s 3f\n\t" |
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" cmp/eq %3, %2\n\t" |
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"bt/s 1b\n\t" |
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" mov.b @%1+, %3\n\t" |
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"add #-2, %1\n\t" |
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"mov.b @%1, %3\n" |
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"2:\n\t" |
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"sub %3, %2\n" |
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"3:" |
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:"=r" (__cs), "=r" (__ct), "=&r" (__res), "=&z" (__dummy) |
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: "0" (__cs), "1" (__ct), "r" (__cs+__n) |
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: "t"); |
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return __res; |
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} |
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#define __HAVE_ARCH_MEMSET |
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extern void *memset(void *__s, int __c, size_t __count); |
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#define __HAVE_ARCH_MEMCPY |
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extern void *memcpy(void *__to, __const__ void *__from, size_t __n); |
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#define __HAVE_ARCH_MEMMOVE |
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extern void *memmove(void *__dest, __const__ void *__src, size_t __n); |
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#define __HAVE_ARCH_MEMCHR |
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extern void *memchr(const void *__s, int __c, size_t __n); |
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#define __HAVE_ARCH_STRLEN |
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extern size_t strlen(const char *); |
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#endif /* __ASM_SH_STRING_H */
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