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 | |