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Tip revision: c1ae3cfa0e89fa1a7ecc4c99031f5e9ae99d9201 authored by Linus Torvalds on 05 March 2017, 20:59:56 UTC
Linux 4.11-rc1
Tip revision: c1ae3cf
lshrdi3.c
#include <linux/export.h>

#include "libgcc.h"

long long notrace __lshrdi3(long long u, word_type b)
{
	DWunion uu, w;
	word_type bm;

	if (b == 0)
		return u;

	uu.ll = u;
	bm = 32 - b;

	if (bm <= 0) {
		w.s.high = 0;
		w.s.low = (unsigned int) uu.s.high >> -bm;
	} else {
		const unsigned int carries = (unsigned int) uu.s.high << bm;

		w.s.high = (unsigned int) uu.s.high >> b;
		w.s.low = ((unsigned int) uu.s.low >> b) | carries;
	}

	return w.ll;
}

EXPORT_SYMBOL(__lshrdi3);
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