mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-21 03:33:59 +08:00
4db2b604c0
Introducing a new include/lib directory just for this file totally messes up tab completion for include/linux, which is highly annoying. Move it to include/linux where we have headers for all kinds of other lib/ code as well. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
46 lines
1.2 KiB
C
46 lines
1.2 KiB
C
/*
|
|
* lib/lshrdi3.c
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, see the file COPYING, or write
|
|
* to the Free Software Foundation, Inc.
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/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);
|