arch/s390/math-emu/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__ ("   alr  %1,%3\n"                      \
  10                  "   brc  12,0f\n"                      \
  11                  "   ahi  %0,1\n"                       \
  12                  "0: alr  %0,%2"                        \
  13                  : "+&d" (__sh), "+d" (__sl)            \
  14                  : "d" (bh), "d" (bl) : "cc" );         \
  15         (sh) = __sh;                                    \
  16         (sl) = __sl;                                    \
  17 })
  18
  19 #define sub_ddmmss(sh, sl, ah, al, bh, bl) ({           \
  20        unsigned int __sh = (ah);                        \
  21        unsigned int __sl = (al);                        \
  22        __asm__ ("   slr  %1,%3\n"                       \
  23                 "   brc  3,0f\n"                        \
  24                 "   ahi  %0,-1\n"                       \
  25                 "0: slr  %0,%2"                         \
  26                 : "+&d" (__sh), "+d" (__sl)             \
  27                 : "d" (bh), "d" (bl) : "cc" );          \
  28        (sh) = __sh;                                     \
  29        (sl) = __sl;                                     \
  30 })
  31
  32 /* a umul b = a mul b + (a>=2<<31) ? b<<32:0 + (b>=2<<31) ? a<<32:0 */
  33 #define umul_ppmm(wh, wl, u, v) ({                      \
  34         unsigned int __wh = u;                          \
  35         unsigned int __wl = v;                          \
  36         __asm__ ("   ltr  1,%0\n"                       \
  37                  "   mr   0,%1\n"                       \
  38                  "   jnm  0f\n"                         \
  39                  "   alr  0,%1\n"                       \
  40                  "0: ltr  %1,%1\n"                      \
  41                  "   jnm  1f\n"                         \
  42                  "   alr  0,%0\n"                       \
  43                  "1: lr   %0,0\n"                       \
  44                  "   lr   %1,1\n"                       \
  45                  : "+d" (__wh), "+d" (__wl)             \
  46                  : : "0", "1", "cc" );                  \
  47         wh = __wh;                                      \
  48         wl = __wl;                                      \
  49 })
  50
  51 #define udiv_qrnnd(q, r, n1, n0, d)                     \
  52   do { unsigned long __r;                               \
  53     (q) = __udiv_qrnnd (&__r, (n1), (n0), (d));         \
  54     (r) = __r;                                          \
  55   } while (0)
  56 extern unsigned long __udiv_qrnnd (unsigned long *, unsigned long,
  57                                    unsigned long , unsigned long);
  58
  59 #define UDIV_NEEDS_NORMALIZATION 0
  60
  61 #define abort() return 0
  62
  63 #define __BYTE_ORDER __BIG_ENDIAN