63 строки
1.0 KiB
C
63 строки
1.0 KiB
C
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#include <linux/types.h>
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void * memcpy(void * to, const void * from, size_t n)
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{
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#ifdef CONFIG_COLDFIRE
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void *xto = to;
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size_t temp;
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if (!n)
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return xto;
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if ((long) to & 1)
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{
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char *cto = to;
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const char *cfrom = from;
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*cto++ = *cfrom++;
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to = cto;
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from = cfrom;
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n--;
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}
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if (n > 2 && (long) to & 2)
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{
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short *sto = to;
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const short *sfrom = from;
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*sto++ = *sfrom++;
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to = sto;
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from = sfrom;
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n -= 2;
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}
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temp = n >> 2;
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if (temp)
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{
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long *lto = to;
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const long *lfrom = from;
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for (; temp; temp--)
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*lto++ = *lfrom++;
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to = lto;
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from = lfrom;
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}
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if (n & 2)
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{
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short *sto = to;
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const short *sfrom = from;
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*sto++ = *sfrom++;
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to = sto;
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from = sfrom;
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}
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if (n & 1)
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{
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char *cto = to;
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const char *cfrom = from;
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*cto = *cfrom;
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}
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return xto;
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#else
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const char *c_from = from;
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char *c_to = to;
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while (n-- > 0)
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*c_to++ = *c_from++;
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return((void *) to);
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#endif
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}
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