GNU Linux-libre 4.19.314-gnu1
[releases.git] / arch / sh / math-emu / sfp-util.h
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