blob: 0addc6466d958aede3954efeb6b7071077344e6c [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001#include <linux/kernel.h>
2#include <linux/sched.h>
3#include <linux/types.h>
4#include <asm/byteorder.h>
5
6#define add_ssaaaa(sh, sl, ah, al, bh, bl) ({ \
Martin Schwidefsky94c12cc2006-09-28 16:56:43 +02007 unsigned int __sh = (ah); \
8 unsigned int __sl = (al); \
9 asm volatile( \
10 " alr %1,%3\n" \
11 " brc 12,0f\n" \
12 " ahi %0,1\n" \
13 "0: alr %0,%2" \
14 : "+&d" (__sh), "+d" (__sl) \
15 : "d" (bh), "d" (bl) : "cc"); \
16 (sh) = __sh; \
17 (sl) = __sl; \
Linus Torvalds1da177e2005-04-16 15:20:36 -070018})
19
20#define sub_ddmmss(sh, sl, ah, al, bh, bl) ({ \
Martin Schwidefsky94c12cc2006-09-28 16:56:43 +020021 unsigned int __sh = (ah); \
22 unsigned int __sl = (al); \
23 asm volatile( \
24 " slr %1,%3\n" \
25 " brc 3,0f\n" \
26 " ahi %0,-1\n" \
27 "0: slr %0,%2" \
28 : "+&d" (__sh), "+d" (__sl) \
29 : "d" (bh), "d" (bl) : "cc"); \
30 (sh) = __sh; \
31 (sl) = __sl; \
Linus Torvalds1da177e2005-04-16 15:20:36 -070032})
33
34/* a umul b = a mul b + (a>=2<<31) ? b<<32:0 + (b>=2<<31) ? a<<32:0 */
35#define umul_ppmm(wh, wl, u, v) ({ \
Martin Schwidefsky94c12cc2006-09-28 16:56:43 +020036 unsigned int __wh = u; \
37 unsigned int __wl = v; \
38 asm volatile( \
39 " ltr 1,%0\n" \
40 " mr 0,%1\n" \
41 " jnm 0f\n" \
42 " alr 0,%1\n" \
43 "0: ltr %1,%1\n" \
44 " jnm 1f\n" \
45 " alr 0,%0\n" \
46 "1: lr %0,0\n" \
47 " lr %1,1\n" \
48 : "+d" (__wh), "+d" (__wl) \
49 : : "0", "1", "cc"); \
50 wh = __wh; \
51 wl = __wl; \
Linus Torvalds1da177e2005-04-16 15:20:36 -070052})
53
Martin Schwidefsky8a883672007-07-10 11:24:14 +020054#ifdef __s390x__
55#define udiv_qrnnd(q, r, n1, n0, d) \
56 do { unsigned long __n; \
57 unsigned int __r, __d; \
58 __n = ((unsigned long)(n1) << 32) + n0; \
59 __d = (d); \
60 (q) = __n / __d; \
61 (r) = __n % __d; \
62 } while (0)
63#else
Linus Torvalds1da177e2005-04-16 15:20:36 -070064#define udiv_qrnnd(q, r, n1, n0, d) \
Martin Schwidefsky31ee4b22007-02-05 21:18:31 +010065 do { unsigned int __r; \
Linus Torvalds1da177e2005-04-16 15:20:36 -070066 (q) = __udiv_qrnnd (&__r, (n1), (n0), (d)); \
67 (r) = __r; \
68 } while (0)
Martin Schwidefsky31ee4b22007-02-05 21:18:31 +010069extern unsigned long __udiv_qrnnd (unsigned int *, unsigned int,
70 unsigned int , unsigned int);
Martin Schwidefsky8a883672007-07-10 11:24:14 +020071#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -070072
73#define UDIV_NEEDS_NORMALIZATION 0
74
75#define abort() return 0
76
77#define __BYTE_ORDER __BIG_ENDIAN