55 lines
1.2 KiB
C
55 lines
1.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _M68K_STRING_H_
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#define _M68K_STRING_H_
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#include <linux/types.h>
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#include <linux/compiler.h>
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#define __HAVE_ARCH_STRNLEN
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static inline size_t strnlen(const char *s, size_t count)
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{
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const char *sc = s;
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asm volatile ("\n"
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"1: subq.l #1,%1\n"
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" jcs 2f\n"
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" tst.b (%0)+\n"
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" jne 1b\n"
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" subq.l #1,%0\n"
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"2:"
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: "+a" (sc), "+d" (count));
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return sc - s;
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}
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#define __HAVE_ARCH_STRNCPY
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static inline char *strncpy(char *dest, const char *src, size_t n)
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{
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char *xdest = dest;
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asm volatile ("\n"
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" jra 2f\n"
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"1: move.b (%1),(%0)+\n"
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" jeq 2f\n"
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" addq.l #1,%1\n"
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"2: subq.l #1,%2\n"
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" jcc 1b\n"
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: "+a" (dest), "+a" (src), "+d" (n)
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: : "memory");
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return xdest;
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}
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#define __HAVE_ARCH_MEMMOVE
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extern void *memmove(void *, const void *, __kernel_size_t);
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#define memcmp(d, s, n) __builtin_memcmp(d, s, n)
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#define __HAVE_ARCH_MEMSET
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extern void *memset(void *, int, __kernel_size_t);
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#define memset(d, c, n) __builtin_memset(d, c, n)
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#define __HAVE_ARCH_MEMCPY
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extern void *memcpy(void *, const void *, __kernel_size_t);
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#define memcpy(d, s, n) __builtin_memcpy(d, s, n)
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#endif /* _M68K_STRING_H_ */
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