static inline void __memcpy_unaligned_up()

in lib/memcpy.c [72:98]

• 27 lines of code
• 3 McCabe index (conditional complexity)

static inline void __memcpy_unaligned_up (unsigned long d, unsigned long s,
					  long n)
{
	ALIGN_DEST_TO8_UP(d,s,n);
	n -= 8;			/* to avoid compare against 8 in the loop */
	if (n >= 0) {
		unsigned long low_word, high_word;
		__asm__("ldq_u %0,%1":"=r" (low_word):"m" (*(unsigned long *) s));
		do {
			unsigned long tmp;
			__asm__("ldq_u %0,%1":"=r" (high_word):"m" (*(unsigned long *)(s+8)));
			n -= 8;
			__asm__("extql %1,%2,%0"
				:"=r" (low_word)
				:"r" (low_word), "r" (s));
			__asm__("extqh %1,%2,%0"
				:"=r" (tmp)
				:"r" (high_word), "r" (s));
			s += 8;
			*(unsigned long *) d = low_word | tmp;
			d += 8;
			low_word = high_word;
		} while (n >= 0);
	}
	n += 8;
	DO_REST_UP(d,s,n);
}