root/lib/ashrdi3.c
// SPDX-License-Identifier: GPL-2.0-or-later
/*
 */

#include <linux/export.h>

#include <linux/libgcc.h>

long long notrace __ashrdi3(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 = 1..1 or 0..0 */
                w.s.high =
                    uu.s.high >> 31;
                w.s.low = uu.s.high >> -bm;
        } else {
                const unsigned int carries = (unsigned int) uu.s.high << bm;

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

        return w.ll;
}
EXPORT_SYMBOL(__ashrdi3);