microblaze: Add __cmpdi2

lib-y += ashldi3.o

lib-y += ashrdi3.o

lib-y += cmpdi2.o

lib-y += divsi3.o

lib-y += lshrdi3.o

lib-y += modsi3.o

#include <linux/module.h>

#include "libgcc.h"

word_type __cmpdi2(long long a, long long b)

{

	const DWunion au = {

		.ll = a

	};

	const DWunion bu = {

		.ll = b

	};

	if (au.s.high < bu.s.high)

		return 0;

	else if (au.s.high > bu.s.high)

		return 2;

	if ((unsigned int) au.s.low < (unsigned int) bu.s.low)

		return 0;

	else if ((unsigned int) au.s.low > (unsigned int) bu.s.low)

		return 2;

	return 1;

}

EXPORT_SYMBOL(__cmpdi2);