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
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