split dev_queue
[cor.git] / lib / ashrdi3.c
blobfc84244ad9edcb94be7050014d909cef4f3f8cb4
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 */
5 #include <linux/export.h>
7 #include <linux/libgcc.h>
9 long long notrace __ashrdi3(long long u, word_type b)
11 DWunion uu, w;
12 word_type bm;
14 if (b == 0)
15 return u;
17 uu.ll = u;
18 bm = 32 - b;
20 if (bm <= 0) {
21 /* w.s.high = 1..1 or 0..0 */
22 w.s.high =
23 uu.s.high >> 31;
24 w.s.low = uu.s.high >> -bm;
25 } else {
26 const unsigned int carries = (unsigned int) uu.s.high << bm;
28 w.s.high = uu.s.high >> b;
29 w.s.low = ((unsigned int) uu.s.low >> b) | carries;
32 return w.ll;
34 EXPORT_SYMBOL(__ashrdi3);