source/libs/gmp/gmp-src/mpn/sparc32/udiv.asm

   1 dnl  SPARC v7 __udiv_qrnnd division support, used from longlong.h.
   2 dnl  This is for v7 CPUs with a floating-point unit.
   3
   4 dnl  Copyright 1993, 1994, 1996, 2000 Free Software Foundation, Inc.
   5
   6 dnl  This file is part of the GNU MP Library.
   7 dnl
   8 dnl  The GNU MP Library is free software; you can redistribute it and/or modify
   9 dnl  it under the terms of either:
  10 dnl
  11 dnl    * the GNU Lesser General Public License as published by the Free
  12 dnl      Software Foundation; either version 3 of the License, or (at your
  13 dnl      option) any later version.
  14 dnl
  15 dnl  or
  16 dnl
  17 dnl    * the GNU General Public License as published by the Free Software
  18 dnl      Foundation; either version 2 of the License, or (at your option) any
  19 dnl      later version.
  20 dnl
  21 dnl  or both in parallel, as here.
  22 dnl
  23 dnl  The GNU MP Library is distributed in the hope that it will be useful, but
  24 dnl  WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  25 dnl  or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  26 dnl  for more details.
  27 dnl
  28 dnl  You should have received copies of the GNU General Public License and the
  29 dnl  GNU Lesser General Public License along with the GNU MP Library.  If not,
  30 dnl  see https://www.gnu.org/licenses/.
  31
  32
  33 include(`../config.m4')
  34
  35 C INPUT PARAMETERS
  36 C rem_ptr       i0
  37 C n1            i1
  38 C n0            i2
  39 C d             i3
  40
  41 ASM_START()
  42
  43 ifdef(`PIC',
  44 `       TEXT
  45 L(getpc):
  46         retl
  47         nop')
  48
  49         TEXT
  50         ALIGN(8)
  51 L(C0):  .double 0r4294967296
  52 L(C1):  .double 0r2147483648
  53
  54 PROLOGUE(mpn_udiv_qrnnd)
  55         save    %sp,-104,%sp
  56         st      %i1,[%fp-8]
  57         ld      [%fp-8],%f10
  58
  59 ifdef(`PIC',
  60 `L(pc): call    L(getpc)                C put address of this insn in %o7
  61         ldd     [%o7+L(C0)-L(pc)],%f8',
  62 `       sethi   %hi(L(C0)),%o7
  63         ldd     [%o7+%lo(L(C0))],%f8')
  64
  65         fitod   %f10,%f4
  66         cmp     %i1,0
  67         bge     L(248)
  68         mov     %i0,%i5
  69         faddd   %f4,%f8,%f4
  70 L(248):
  71         st      %i2,[%fp-8]
  72         ld      [%fp-8],%f10
  73         fmuld   %f4,%f8,%f6
  74         cmp     %i2,0
  75         bge     L(249)
  76         fitod   %f10,%f2
  77         faddd   %f2,%f8,%f2
  78 L(249):
  79         st      %i3,[%fp-8]
  80         faddd   %f6,%f2,%f2
  81         ld      [%fp-8],%f10
  82         cmp     %i3,0
  83         bge     L(250)
  84         fitod   %f10,%f4
  85         faddd   %f4,%f8,%f4
  86 L(250):
  87         fdivd   %f2,%f4,%f2
  88
  89 ifdef(`PIC',
  90 `       ldd     [%o7+L(C1)-L(pc)],%f4',
  91 `       sethi   %hi(L(C1)),%o7
  92         ldd     [%o7+%lo(L(C1))],%f4')
  93
  94         fcmped  %f2,%f4
  95         nop
  96         fbge,a  L(251)
  97         fsubd   %f2,%f4,%f2
  98         fdtoi   %f2,%f2
  99         st      %f2,[%fp-8]
 100         b       L(252)
 101         ld      [%fp-8],%i4
 102 L(251):
 103         fdtoi   %f2,%f2
 104         st      %f2,[%fp-8]
 105         ld      [%fp-8],%i4
 106         sethi   %hi(-2147483648),%g2
 107         xor     %i4,%g2,%i4
 108 L(252):
 109         wr      %g0,%i4,%y
 110         sra     %i3,31,%g2
 111         and     %i4,%g2,%g2
 112         andcc   %g0,0,%g1
 113         mulscc  %g1,%i3,%g1
 114         mulscc  %g1,%i3,%g1
 115         mulscc  %g1,%i3,%g1
 116         mulscc  %g1,%i3,%g1
 117         mulscc  %g1,%i3,%g1
 118         mulscc  %g1,%i3,%g1
 119         mulscc  %g1,%i3,%g1
 120         mulscc  %g1,%i3,%g1
 121         mulscc  %g1,%i3,%g1
 122         mulscc  %g1,%i3,%g1
 123         mulscc  %g1,%i3,%g1
 124         mulscc  %g1,%i3,%g1
 125         mulscc  %g1,%i3,%g1
 126         mulscc  %g1,%i3,%g1
 127         mulscc  %g1,%i3,%g1
 128         mulscc  %g1,%i3,%g1
 129         mulscc  %g1,%i3,%g1
 130         mulscc  %g1,%i3,%g1
 131         mulscc  %g1,%i3,%g1
 132         mulscc  %g1,%i3,%g1
 133         mulscc  %g1,%i3,%g1
 134         mulscc  %g1,%i3,%g1
 135         mulscc  %g1,%i3,%g1
 136         mulscc  %g1,%i3,%g1
 137         mulscc  %g1,%i3,%g1
 138         mulscc  %g1,%i3,%g1
 139         mulscc  %g1,%i3,%g1
 140         mulscc  %g1,%i3,%g1
 141         mulscc  %g1,%i3,%g1
 142         mulscc  %g1,%i3,%g1
 143         mulscc  %g1,%i3,%g1
 144         mulscc  %g1,%i3,%g1
 145         mulscc  %g1,0,%g1
 146         add     %g1,%g2,%i0
 147         rd      %y,%g3
 148         subcc   %i2,%g3,%o7
 149         subxcc  %i1,%i0,%g0
 150         be      L(253)
 151         cmp     %o7,%i3
 152
 153         add     %i4,-1,%i0
 154         add     %o7,%i3,%o7
 155         st      %o7,[%i5]
 156         ret
 157         restore
 158 L(253):
 159         blu     L(246)
 160         mov     %i4,%i0
 161         add     %i4,1,%i0
 162         sub     %o7,%i3,%o7
 163 L(246):
 164         st      %o7,[%i5]
 165         ret
 166         restore
 167 EPILOGUE(mpn_udiv_qrnnd)