sh: Move over to dynamically allocated FPU context.
[linux-2.6.git] / arch / sh / math-emu / sfp-util.h
1 /*
2  * These are copied from glibc/stdlib/longlong.h
3  */
4
5 #define add_ssaaaa(sh, sl, ah, al, bh, bl) \
6   do {                                                                  \
7     UWtype __x;                                                         \
8     __x = (al) + (bl);                                                  \
9     (sh) = (ah) + (bh) + (__x < (al));                                  \
10     (sl) = __x;                                                         \
11   } while (0)
12
13 #define sub_ddmmss(sh, sl, ah, al, bh, bl) \
14   do {                                                                  \
15     UWtype __x;                                                         \
16     __x = (al) - (bl);                                                  \
17     (sh) = (ah) - (bh) - (__x > (al));                                  \
18     (sl) = __x;                                                         \
19   } while (0)
20
21 #define umul_ppmm(w1, w0, u, v) \
22   __asm__ ("dmulu.l %2,%3\n\tsts    macl,%1\n\tsts  mach,%0"    \
23         : "=r" ((u32)(w1)), "=r" ((u32)(w0))    \
24         :  "r" ((u32)(u)),   "r" ((u32)(v))     \
25         : "macl", "mach")
26
27 #define __ll_B ((UWtype) 1 << (W_TYPE_SIZE / 2))
28 #define __ll_lowpart(t) ((UWtype) (t) & (__ll_B - 1))
29 #define __ll_highpart(t) ((UWtype) (t) >> (W_TYPE_SIZE / 2))
30
31 #define udiv_qrnnd(q, r, n1, n0, d) \
32   do {                                                                  \
33     UWtype __d1, __d0, __q1, __q0;                                      \
34     UWtype __r1, __r0, __m;                                             \
35     __d1 = __ll_highpart (d);                                           \
36     __d0 = __ll_lowpart (d);                                            \
37                                                                         \
38     __r1 = (n1) % __d1;                                                 \
39     __q1 = (n1) / __d1;                                                 \
40     __m = (UWtype) __q1 * __d0;                                         \
41     __r1 = __r1 * __ll_B | __ll_highpart (n0);                          \
42     if (__r1 < __m)                                                     \
43       {                                                                 \
44         __q1--, __r1 += (d);                                            \
45         if (__r1 >= (d)) /* i.e. we didn't get carry when adding to __r1 */\
46           if (__r1 < __m)                                               \
47             __q1--, __r1 += (d);                                        \
48       }                                                                 \
49     __r1 -= __m;                                                        \
50                                                                         \
51     __r0 = __r1 % __d1;                                                 \
52     __q0 = __r1 / __d1;                                                 \
53     __m = (UWtype) __q0 * __d0;                                         \
54     __r0 = __r0 * __ll_B | __ll_lowpart (n0);                           \
55     if (__r0 < __m)                                                     \
56       {                                                                 \
57         __q0--, __r0 += (d);                                            \
58         if (__r0 >= (d))                                                \
59           if (__r0 < __m)                                               \
60             __q0--, __r0 += (d);                                        \
61       }                                                                 \
62     __r0 -= __m;                                                        \
63                                                                         \
64     (q) = (UWtype) __q1 * __ll_B | __q0;                                \
65     (r) = __r0;                                                         \
66   } while (0)
67
68 #define abort() return 0
69
70 #define __BYTE_ORDER __LITTLE_ENDIAN
71
72