[mirror_ubuntu-bionic-kernel.git] / arch / h8300 / lib / ashldi3.c

#include "libgcc.h"

DWtype
__ashldi3(DWtype u, word_type b)
{
	const DWunion uu = {.ll = u};
	const word_type bm = (sizeof (Wtype) * BITS_PER_UNIT) - b;
	DWunion w;

	if (b == 0)
		return u;

	if (bm <= 0) {
		w.s.low = 0;
		w.s.high = (UWtype) uu.s.low << -bm;
	} else {
		const UWtype carries = (UWtype) uu.s.low >> bm;

		w.s.low = (UWtype) uu.s.low << b;
		w.s.high = ((UWtype) uu.s.high << b) | carries;
	}

	return w.ll;
}
Commit	Line	Data
a71a29de YS	1	#include "libgcc.h"
	2
	3	DWtype
	4	__ashldi3(DWtype u, word_type b)
	5	{
	6	const DWunion uu = {.ll = u};
	7	const word_type bm = (sizeof (Wtype) * BITS_PER_UNIT) - b;
	8	DWunion w;
	9
	10	if (b == 0)
	11	return u;
	12
	13	if (bm <= 0) {
	14	w.s.low = 0;
	15	w.s.high = (UWtype) uu.s.low << -bm;
	16	} else {
	17	const UWtype carries = (UWtype) uu.s.low >> bm;
	18
	19	w.s.low = (UWtype) uu.s.low << b;
	20	w.s.high = ((UWtype) uu.s.high << b) \| carries;
	21	}
	22
	23	return w.ll;
	24	}