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Viewing changes to arch/s390/include/asm/sfp-util.h

  • Committer: Package Import Robot
  • Author(s): Alessio Igor Bogani
  • Date: 2011-10-26 11:13:05 UTC
  • Revision ID: package-import@ubuntu.com-20111026111305-tz023xykf0i6eosh
Tags: upstream-3.2.0
Import upstream version 3.2.0

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arch/s390/include/asm/sfp-util.h
 
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#include <linux/kernel.h>
 
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#include <linux/sched.h>
 
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#include <linux/types.h>
 
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#include <asm/byteorder.h>
 
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#define add_ssaaaa(sh, sl, ah, al, bh, bl) ({           \
 
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        unsigned int __sh = (ah);                       \
 
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        unsigned int __sl = (al);                       \
 
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        asm volatile(                                   \
 
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                "       alr     %1,%3\n"                \
 
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                "       brc     12,0f\n"                \
 
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                "       ahi     %0,1\n"                 \
 
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                "0:     alr  %0,%2"                     \
 
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                : "+&d" (__sh), "+d" (__sl)             \
 
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                : "d" (bh), "d" (bl) : "cc");           \
 
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        (sh) = __sh;                                    \
 
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        (sl) = __sl;                                    \
 
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})
 
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#define sub_ddmmss(sh, sl, ah, al, bh, bl) ({           \
 
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        unsigned int __sh = (ah);                       \
 
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        unsigned int __sl = (al);                       \
 
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        asm volatile(                                   \
 
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                "       slr     %1,%3\n"                \
 
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                "       brc     3,0f\n"                 \
 
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                "       ahi     %0,-1\n"                \
 
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                "0:     slr     %0,%2"                  \
 
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                : "+&d" (__sh), "+d" (__sl)             \
 
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                : "d" (bh), "d" (bl) : "cc");           \
 
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        (sh) = __sh;                                    \
 
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        (sl) = __sl;                                    \
 
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})
 
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/* a umul b = a mul b + (a>=2<<31) ? b<<32:0 + (b>=2<<31) ? a<<32:0 */
 
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#define umul_ppmm(wh, wl, u, v) ({                      \
 
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        unsigned int __wh = u;                          \
 
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        unsigned int __wl = v;                          \
 
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        asm volatile(                                   \
 
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                "       ltr     1,%0\n"                 \
 
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                "       mr      0,%1\n"                 \
 
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                "       jnm     0f\n"                           \
 
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                "       alr     0,%1\n"                 \
 
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                "0:     ltr     %1,%1\n"                        \
 
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                "       jnm     1f\n"                           \
 
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                "       alr     0,%0\n"                 \
 
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                "1:     lr      %0,0\n"                 \
 
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                "       lr      %1,1\n"                 \
 
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                : "+d" (__wh), "+d" (__wl)              \
 
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                : : "0", "1", "cc");                    \
 
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        wh = __wh;                                      \
 
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        wl = __wl;                                      \
 
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})
 
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#ifdef __s390x__
 
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#define udiv_qrnnd(q, r, n1, n0, d)                     \
 
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  do { unsigned long __n;                               \
 
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       unsigned int __r, __d;                           \
 
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    __n = ((unsigned long)(n1) << 32) + n0;             \
 
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    __d = (d);                                          \
 
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    (q) = __n / __d;                                    \
 
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    (r) = __n % __d;                                    \
 
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  } while (0)
 
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#else
 
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#define udiv_qrnnd(q, r, n1, n0, d)                     \
 
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  do { unsigned int __r;                                \
 
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    (q) = __udiv_qrnnd (&__r, (n1), (n0), (d));         \
 
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    (r) = __r;                                          \
 
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  } while (0)
 
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extern unsigned long __udiv_qrnnd (unsigned int *, unsigned int,
 
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                                   unsigned int , unsigned int);
 
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#endif
 
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#define UDIV_NEEDS_NORMALIZATION 0
 
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#define abort() BUG()
 
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#define __BYTE_ORDER __BIG_ENDIAN