sfp-util.h

Go to the documentation of this file.

#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/types.h>
#include <asm/byteorder.h>

#define add_ssaaaa(sh, sl, ah, al, bh, bl) ({       \
    unsigned int __sh = (ah);           \
    unsigned int __sl = (al);           \
    asm volatile(                   \
        "   alr %1,%3\n"        \
        "   brc 12,0f\n"        \
        "   ahi %0,1\n"         \
        "0: alr  %0,%2"         \
        : "+&d" (__sh), "+d" (__sl)     \
        : "d" (bh), "d" (bl) : "cc");       \
    (sh) = __sh;                    \
    (sl) = __sl;                    \
})

#define sub_ddmmss(sh, sl, ah, al, bh, bl) ({       \
    unsigned int __sh = (ah);           \
    unsigned int __sl = (al);           \
    asm volatile(                   \
        "   slr %1,%3\n"        \
        "   brc 3,0f\n"         \
        "   ahi %0,-1\n"        \
        "0: slr %0,%2"          \
        : "+&d" (__sh), "+d" (__sl)     \
        : "d" (bh), "d" (bl) : "cc");       \
    (sh) = __sh;                    \
    (sl) = __sl;                    \
})

/* a umul b = a mul b + (a>=2<<31) ? b<<32:0 + (b>=2<<31) ? a<<32:0 */
#define umul_ppmm(wh, wl, u, v) ({          \
    unsigned int __wh = u;              \
    unsigned int __wl = v;              \
    asm volatile(                   \
        "   ltr 1,%0\n"         \
        "   mr  0,%1\n"         \
        "   jnm 0f\n"               \
        "   alr 0,%1\n"         \
        "0: ltr %1,%1\n"            \
        "   jnm 1f\n"               \
        "   alr 0,%0\n"         \
        "1: lr  %0,0\n"         \
        "   lr  %1,1\n"         \
        : "+d" (__wh), "+d" (__wl)      \
        : : "0", "1", "cc");            \
    wh = __wh;                  \
    wl = __wl;                  \
})

#ifdef CONFIG_64BIT
#define udiv_qrnnd(q, r, n1, n0, d)         \
  do { unsigned long __n;               \
       unsigned int __r, __d;               \
    __n = ((unsigned long)(n1) << 32) + n0;     \
    __d = (d);                      \
    (q) = __n / __d;                    \
    (r) = __n % __d;                    \
  } while (0)
#else
#define udiv_qrnnd(q, r, n1, n0, d)         \
  do { unsigned int __r;                \
    (q) = __udiv_qrnnd (&__r, (n1), (n0), (d));     \
    (r) = __r;                      \
  } while (0)
extern unsigned long __udiv_qrnnd (unsigned int *, unsigned int,
                   unsigned int , unsigned int);
#endif

#define UDIV_NEEDS_NORMALIZATION 0

#define abort() BUG()

#define __BYTE_ORDER __BIG_ENDIAN