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/arch/mips/lib/ashrdi3.c

https://bitbucket.org/cresqo/cm7-p500-kernel
C | 31 lines | 22 code | 8 blank | 1 comment | 4 complexity | 8b36e391d219e3efd3b989347fdaed78 MD5 | raw file
Possible License(s): LGPL-2.0, AGPL-1.0, GPL-2.0
 1#include <linux/module.h>
 2
 3#include "libgcc.h"
 4
 5long long __ashrdi3(long long u, word_type b)
 6{
 7	DWunion uu, w;
 8	word_type bm;
 9
10	if (b == 0)
11		return u;
12
13	uu.ll = u;
14	bm = 32 - b;
15
16	if (bm <= 0) {
17		/* w.s.high = 1..1 or 0..0 */
18		w.s.high =
19		    uu.s.high >> 31;
20		w.s.low = uu.s.high >> -bm;
21	} else {
22		const unsigned int carries = (unsigned int) uu.s.high << bm;
23
24		w.s.high = uu.s.high >> b;
25		w.s.low = ((unsigned int) uu.s.low >> b) | carries;
26	}
27
28	return w.ll;
29}
30
31EXPORT_SYMBOL(__ashrdi3);