[linux-2.6-block.git] / arch / mips / lib / ashrdi3.c

#include <linux/module.h>

#include "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);
Commit	Line	Data
72fbfb26 RB	1	#include <linux/module.h>
	2
	3	#include "libgcc.h"
	4
aedcfbe0	5	long long notrace __ashrdi3(long long u, word_type b)
72fbfb26 RB	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
	31	EXPORT_SYMBOL(__ashrdi3);