1#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) ({ \ 7 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; \ 18}) 19 20#define sub_ddmmss(sh, sl, ah, al, bh, bl) ({ \ 21 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; \ 32}) 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) ({ \ 36 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; \ 52}) 53 54#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 64#define udiv_qrnnd(q, r, n1, n0, d) \ 65 do { unsigned int __r; \ 66 (q) = __udiv_qrnnd (&__r, (n1), (n0), (d)); \ 67 (r) = __r; \ 68 } while (0) 69extern unsigned long __udiv_qrnnd (unsigned int *, unsigned int, 70 unsigned int , unsigned int); 71#endif 72 73#define UDIV_NEEDS_NORMALIZATION 0 74 75#define abort() return 0 76 77#define __BYTE_ORDER __BIG_ENDIAN 78