diff options
Diffstat (limited to 'arch/blackfin/lib/muldi3.c')
-rw-r--r-- | arch/blackfin/lib/muldi3.c | 75 |
1 files changed, 0 insertions, 75 deletions
diff --git a/arch/blackfin/lib/muldi3.c b/arch/blackfin/lib/muldi3.c deleted file mode 100644 index 17c303b953..0000000000 --- a/arch/blackfin/lib/muldi3.c +++ /dev/null @@ -1,75 +0,0 @@ -/* - * barebox - muldi3.c contains routines for mult and div - * - * Copyright (c) 2005 blackfin.uclinux.org - * - * See file CREDITS for list of people who contributed to this - * project. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of - * the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - */ - -#include "gcclib.h" - -/* Generic function got from GNU gcc package, libgcc2.c */ -#define __ll_B (1L << (SI_TYPE_SIZE / 2)) -#define __ll_lowpart(t) ((USItype) (t) % __ll_B) -#define __ll_highpart(t) ((USItype) (t) / __ll_B) -#define BITS_PER_UNIT 8 - -#if !defined (umul_ppmm) -#define umul_ppmm(w1, w0, u, v) \ -do { \ - USItype __x0, __x1, __x2, __x3; \ - USItype __ul, __vl, __uh, __vh; \ - \ - __ul = __ll_lowpart (u); \ - __uh = __ll_highpart (u); \ - __vl = __ll_lowpart (v); \ - __vh = __ll_highpart (v); \ - \ - __x0 = (USItype) __ul * __vl; \ - __x1 = (USItype) __ul * __vh; \ - __x2 = (USItype) __uh * __vl; \ - __x3 = (USItype) __uh * __vh; \ - \ - __x1 += __ll_highpart (__x0);/* this can't give carry */ \ - __x1 += __x2; /* but this indeed can */ \ - if (__x1 < __x2) /* did we get it? */ \ - __x3 += __ll_B; /* yes, add it in the proper pos. */ \ - \ - (w1) = __x3 + __ll_highpart (__x1); \ - (w0) = __ll_lowpart (__x1) * __ll_B + __ll_lowpart (__x0); \ -} while (0) -#endif - -#if !defined (__umulsidi3) -#define __umulsidi3(u, v) \ - ({DIunion __w; \ - umul_ppmm (__w.s.high, __w.s.low, u, v); \ - __w.ll; }) -#endif - -DItype __muldi3 (DItype u, DItype v) -{ - DIunion w; - DIunion uu, vv; - - uu.ll = u, - vv.ll = v; - /* panic("kernel panic for __muldi3"); */ - w.ll = __umulsidi3 (uu.s.low, vv.s.low); - w.s.high += ((USItype) uu.s.low * (USItype) vv.s.high - + (USItype) uu.s.high * (USItype) vv.s.low); - - return w.ll; -} |