SAFE public projects git trees. - safe/jmp/linux-2.6/blob - arch/s390/include/asm/sfp-util.h

   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)
  69 extern 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