Release 4.14 arch/h8300/lib/muldi3.c

// SPDX-License-Identifier: GPL-2.0
#include "libgcc.h"


#define __ll_B ((UWtype) 1 << (W_TYPE_SIZE / 2))

#define __ll_lowpart(t) ((UWtype) (t) & (__ll_B - 1))

#define __ll_highpart(t) ((UWtype) (t) >> (W_TYPE_SIZE / 2))


#define umul_ppmm(w1, w0, u, v) \
	do {                       \
                UWtype __x0, __x1, __x2, __x3;  \
                UHWtype __ul, __vl, __uh, __vh; \
                __ul = __ll_lowpart(u); \
                __uh = __ll_highpart(u);        \
                __vl = __ll_lowpart(v); \
                __vh = __ll_highpart(v);        \
                __x0 = (UWtype) __ul * __vl;    \
                __x1 = (UWtype) __ul * __vh;    \
                __x2 = (UWtype) __uh * __vl;    \
                __x3 = (UWtype) __uh * __vh;    \
                __x1 += __ll_highpart(__x0);    \
                __x1 += __x2;                   \
                if (__x1 < __x2)                \
                        __x3 += __ll_B;         \
                (w1) = __x3 + __ll_highpart(__x1);             \
                (w0) = __ll_lowpart(__x1) * __ll_B + __ll_lowpart(__x0); \
        } while (0)


#define __umulsidi3(u, v) (                       \
                {                               \
                        DWunion __w;            \
                        umul_ppmm(__w.s.high, __w.s.low, u, v); \
                        __w.ll; }                                       \
                )



DWtype __muldi3(DWtype u, DWtype v)
{
	const DWunion uu = {.ll = u};
	const DWunion vv = {.ll = v};
	DWunion w = {.ll = __umulsidi3(uu.s.low, vv.s.low)};

	w.s.high += ((UWtype) uu.s.low * (UWtype) vv.s.high
		     + (UWtype) uu.s.high * (UWtype) vv.s.low);

	return w.ll;
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Yoshinori Sato
97
100.00%
1
100.00%
Total
97
100.00%
1
100.00%

Overall Contributors
Person
Tokens
Prop
Commits
CommitProp
Yoshinori Sato
141
99.30%
1
50.00%
Greg Kroah-Hartman
1
0.70%
1
50.00%
Total
142
100.00%
2
100.00%
Directory: arch/h8300/lib

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