diff options
Diffstat (limited to 'arch/h8300/lib/muldi3.c')
-rw-r--r-- | arch/h8300/lib/muldi3.c | 45 |
1 files changed, 0 insertions, 45 deletions
diff --git a/arch/h8300/lib/muldi3.c b/arch/h8300/lib/muldi3.c deleted file mode 100644 index 9cb11b134e54..000000000000 --- a/arch/h8300/lib/muldi3.c +++ /dev/null @@ -1,45 +0,0 @@ -// 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; -} |