xref: /openbmc/u-boot/arch/sh/lib/ashldi3.c (revision bd061a5214e60c9d1bb24393933323bd1a2dae19)
1*eeb84df6SPhil Edworthy #include "libgcc.h"
2*eeb84df6SPhil Edworthy 
__ashldi3(long long u,word_type b)3*eeb84df6SPhil Edworthy long long __ashldi3(long long u, word_type b)
4*eeb84df6SPhil Edworthy {
5*eeb84df6SPhil Edworthy 	DWunion uu, w;
6*eeb84df6SPhil Edworthy 	word_type bm;
7*eeb84df6SPhil Edworthy 
8*eeb84df6SPhil Edworthy 	if (b == 0)
9*eeb84df6SPhil Edworthy 		return u;
10*eeb84df6SPhil Edworthy 
11*eeb84df6SPhil Edworthy 	uu.ll = u;
12*eeb84df6SPhil Edworthy 	bm = 32 - b;
13*eeb84df6SPhil Edworthy 
14*eeb84df6SPhil Edworthy 	if (bm <= 0) {
15*eeb84df6SPhil Edworthy 		w.s.low = 0;
16*eeb84df6SPhil Edworthy 		w.s.high = (unsigned int) uu.s.low << -bm;
17*eeb84df6SPhil Edworthy 	} else {
18*eeb84df6SPhil Edworthy 		const unsigned int carries = (unsigned int) uu.s.low >> bm;
19*eeb84df6SPhil Edworthy 
20*eeb84df6SPhil Edworthy 		w.s.low = (unsigned int) uu.s.low << b;
21*eeb84df6SPhil Edworthy 		w.s.high = ((unsigned int) uu.s.high << b) | carries;
22*eeb84df6SPhil Edworthy 	}
23*eeb84df6SPhil Edworthy 
24*eeb84df6SPhil Edworthy 	return w.ll;
25*eeb84df6SPhil Edworthy }
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