1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * These are copied from glibc/stdlib/longlong.h 4 */ 5 6 #define add_ssaaaa(sh, sl, ah, al, bh, bl) \ 7 do { \ 8 UWtype __x; \ 9 __x = (al) + (bl); \ 10 (sh) = (ah) + (bh) + (__x < (al)); \ 11 (sl) = __x; \ 12 } while (0) 13 14 #define sub_ddmmss(sh, sl, ah, al, bh, bl) \ 15 do { \ 16 UWtype __x; \ 17 __x = (al) - (bl); \ 18 (sh) = (ah) - (bh) - (__x > (al)); \ 19 (sl) = __x; \ 20 } while (0) 21 22 #define umul_ppmm(w1, w0, u, v) \ 23 __asm__ ("dmulu.l %2,%3\n\tsts macl,%1\n\tsts mach,%0" \ 24 : "=r" ((u32)(w1)), "=r" ((u32)(w0)) \ 25 : "r" ((u32)(u)), "r" ((u32)(v)) \ 26 : "macl", "mach") 27 28 #define __ll_B ((UWtype) 1 << (W_TYPE_SIZE / 2)) 29 #define __ll_lowpart(t) ((UWtype) (t) & (__ll_B - 1)) 30 #define __ll_highpart(t) ((UWtype) (t) >> (W_TYPE_SIZE / 2)) 31 32 #define udiv_qrnnd(q, r, n1, n0, d) \ 33 do { \ 34 UWtype __d1, __d0, __q1, __q0; \ 35 UWtype __r1, __r0, __m; \ 36 __d1 = __ll_highpart (d); \ 37 __d0 = __ll_lowpart (d); \ 38 \ 39 __r1 = (n1) % __d1; \ 40 __q1 = (n1) / __d1; \ 41 __m = (UWtype) __q1 * __d0; \ 42 __r1 = __r1 * __ll_B | __ll_highpart (n0); \ 43 if (__r1 < __m) \ 44 { \ 45 __q1--, __r1 += (d); \ 46 if (__r1 >= (d)) /* i.e. we didn't get carry when adding to __r1 */\ 47 if (__r1 < __m) \ 48 __q1--, __r1 += (d); \ 49 } \ 50 __r1 -= __m; \ 51 \ 52 __r0 = __r1 % __d1; \ 53 __q0 = __r1 / __d1; \ 54 __m = (UWtype) __q0 * __d0; \ 55 __r0 = __r0 * __ll_B | __ll_lowpart (n0); \ 56 if (__r0 < __m) \ 57 { \ 58 __q0--, __r0 += (d); \ 59 if (__r0 >= (d)) \ 60 if (__r0 < __m) \ 61 __q0--, __r0 += (d); \ 62 } \ 63 __r0 -= __m; \ 64 \ 65 (q) = (UWtype) __q1 * __ll_B | __q0; \ 66 (r) = __r0; \ 67 } while (0) 68 69 #define abort() return 0 70