Function memcmp

payloads/libpayload/libc/memory.c:127–143

 */

int memcmp(const void *s1, const void *s2, size_t n)
{
	size_t i = 0;
	const unsigned long *w1 = s1, *w2 = s2;

	if (IS_ALIGNED((uintptr_t)s1, sizeof(unsigned long)) &&
	    IS_ALIGNED((uintptr_t)s2, sizeof(unsigned long)))
		for (; i < n / sizeof(unsigned long); i++)
			if (w1[i] != w2[i])
				break; /* fall through to find differing byte */

	for (i *= sizeof(unsigned long); i < n; i++)
		if (((u8 *)s1)[i] != ((u8 *)s2)[i])
			return ((u8 *)s1)[i] - ((u8 *)s2)[i];

	return 0;
}

void *memchr(const void *s, int c, size_t n)
{