// 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; }