Revision e05e06cd34f5311f677294a08b609acfbc315236 authored by Ben Skeggs on 13 January 2021, 07:12:52 UTC, committed by Ben Skeggs on 15 January 2021, 00:25:15 UTC
Whatever it is that we were doing before doesn't work on Ampere. Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
1 parent 402a896
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);
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