sysdeps/sparc/udiv_qrnnd.S

   1 ! SPARC  __udiv_qrnnd division support, used from longlong.h.
   2
   3 ! Copyright (C) 1993, 1994 Free Software Foundation, Inc.
   4
   5 ! This file is part of the GNU MP Library.
   6
   7 ! The GNU MP Library is free software; you can redistribute it and/or modify
   8 ! it under the terms of the GNU Library General Public License as published by
   9 ! the Free Software Foundation; either version 2 of the License, or (at your
  10 ! option) any later version.
  11
  12 ! The GNU MP Library is distributed in the hope that it will be useful, but
  13 ! WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  14 ! or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
  15 ! License for more details.
  16
  17 ! You should have received a copy of the GNU Library General Public License
  18 ! along with the GNU MP Library; see the file COPYING.LIB.  If not, write to
  19 ! the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20
  21
  22 ! INPUT PARAMETERS
  23 ! rem_ptr       i0
  24 ! n1            i1
  25 ! n0            i2
  26 ! d             i3
  27
  28 #include "sysdep.h"
  29 #undef ret      /* Kludge for glibc */
  30
  31         .text
  32         .align  8
  33 LC0:    .double 0r4294967296
  34 LC1:    .double 0r2147483648
  35
  36         .align  4
  37         .global C_SYMBOL_NAME(__udiv_qrnnd)
  38 C_SYMBOL_NAME(__udiv_qrnnd):
  39         !#PROLOGUE# 0
  40         save    %sp,-104,%sp
  41         !#PROLOGUE# 1
  42         st      %i1,[%fp-8]
  43         ld      [%fp-8],%f10
  44         sethi   %hi(LC0),%o7
  45         fitod   %f10,%f4
  46         ldd     [%o7+%lo(LC0)],%f8
  47         cmp     %i1,0
  48         bge     L248
  49         mov     %i0,%i5
  50         faddd   %f4,%f8,%f4
  51 L248:
  52         st      %i2,[%fp-8]
  53         ld      [%fp-8],%f10
  54         fmuld   %f4,%f8,%f6
  55         cmp     %i2,0
  56         bge     L249
  57         fitod   %f10,%f2
  58         faddd   %f2,%f8,%f2
  59 L249:
  60         st      %i3,[%fp-8]
  61         faddd   %f6,%f2,%f2
  62         ld      [%fp-8],%f10
  63         cmp     %i3,0
  64         bge     L250
  65         fitod   %f10,%f4
  66         faddd   %f4,%f8,%f4
  67 L250:
  68         fdivd   %f2,%f4,%f2
  69         sethi   %hi(LC1),%o7
  70         ldd     [%o7+%lo(LC1)],%f4
  71         fcmped  %f2,%f4
  72         nop
  73         fbge,a  L251
  74         fsubd   %f2,%f4,%f2
  75         fdtoi   %f2,%f2
  76         st      %f2,[%fp-8]
  77         b       L252
  78         ld      [%fp-8],%i4
  79 L251:
  80         fdtoi   %f2,%f2
  81         st      %f2,[%fp-8]
  82         ld      [%fp-8],%i4
  83         sethi   %hi(-2147483648),%g2
  84         xor     %i4,%g2,%i4
  85 L252:
  86         wr      %g0,%i4,%y
  87         sra     %i3,31,%g2
  88         and     %i4,%g2,%g2
  89         andcc   %g0,0,%g1
  90         mulscc  %g1,%i3,%g1
  91         mulscc  %g1,%i3,%g1
  92         mulscc  %g1,%i3,%g1
  93         mulscc  %g1,%i3,%g1
  94         mulscc  %g1,%i3,%g1
  95         mulscc  %g1,%i3,%g1
  96         mulscc  %g1,%i3,%g1
  97         mulscc  %g1,%i3,%g1
  98         mulscc  %g1,%i3,%g1
  99         mulscc  %g1,%i3,%g1
 100         mulscc  %g1,%i3,%g1
 101         mulscc  %g1,%i3,%g1
 102         mulscc  %g1,%i3,%g1
 103         mulscc  %g1,%i3,%g1
 104         mulscc  %g1,%i3,%g1
 105         mulscc  %g1,%i3,%g1
 106         mulscc  %g1,%i3,%g1
 107         mulscc  %g1,%i3,%g1
 108         mulscc  %g1,%i3,%g1
 109         mulscc  %g1,%i3,%g1
 110         mulscc  %g1,%i3,%g1
 111         mulscc  %g1,%i3,%g1
 112         mulscc  %g1,%i3,%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  %g1,0,%g1
 123         add     %g1,%g2,%i0
 124         rd      %y,%g3
 125         subcc   %i2,%g3,%o7
 126         subxcc  %i1,%i0,%g0
 127         be      L253
 128         cmp     %o7,%i3
 129
 130         add     %i4,-1,%i0
 131         add     %o7,%i3,%o7
 132         st      %o7,[%i5]
 133         ret
 134         restore
 135 L253:
 136         blu     L246
 137         mov     %i4,%i0
 138         add     %i4,1,%i0
 139         sub     %o7,%i3,%o7
 140 L246:
 141         st      %o7,[%i5]
 142         ret
 143         restore