sysdeps/hppa/hppa1.1/udiv_qrnnd.s

   1 ;! HP-PA  __udiv_qrnnd division support, used from longlong.h.
   2 ;! This version runs fast on PA 7000 and later.
   3
   4 ;! Copyright (C) 1993, 1994 Free Software Foundation, Inc.
   5
   6 ;! This file is part of the GNU MP Library.
   7
   8 ;! The GNU MP Library is free software; you can redistribute it and/or modify
   9 ;! it under the terms of the GNU Lesser General Public License as published by
  10 ;! the Free Software Foundation; either version 2.1 of the License, or (at your
  11 ;! option) any later version.
  12
  13 ;! The GNU MP Library is distributed in the hope that it will be useful, but
  14 ;! WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  15 ;! or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
  16 ;! License for more details.
  17
  18 ;! You should have received a copy of the GNU Lesser General Public License
  19 ;! along with the GNU MP Library; see the file COPYING.LIB.  If not, write to
  20 ;! the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
  21 ;! MA 02111-1307, USA.
  22
  23
  24 ;! INPUT PARAMETERS
  25 ;! rem_ptr      gr26
  26 ;! n1           gr25
  27 ;! n0           gr24
  28 ;! d            gr23
  29
  30         .text
  31 L$0000:
  32         .word           0x43f00000
  33         .word           0x0
  34         .export         __udiv_qrnnd
  35 __udiv_qrnnd:
  36         .proc
  37         .callinfo       frame=64,no_calls
  38         .entry
  39         ldo             64(%r30),%r30
  40
  41         stws            %r25,-16(%r30)  ;! n_hi
  42         stws            %r24,-12(%r30)  ;! n_lo
  43         b,l             L$0,%r1
  44         ldo             L$0000-L$0(%r1),%r1
  45 L$0:
  46         fldds           -16(%r30),%fr5
  47         stws            %r23,-12(%r30)
  48         comib,<=        0,%r25,L$1
  49         fcnvxf,dbl,dbl  %fr5,%fr5
  50         fldds           0(%r1),%fr4
  51         fadd,dbl        %fr4,%fr5,%fr5
  52 L$1:
  53         fcpy,sgl        %fr0,%fr6L
  54         fldws           -12(%r30),%fr6R
  55         fcnvxf,dbl,dbl  %fr6,%fr4
  56
  57         fdiv,dbl        %fr5,%fr4,%fr5
  58
  59         fcnvfx,dbl,dbl  %fr5,%fr4
  60         fstws           %fr4R,-16(%r30)
  61         xmpyu           %fr4R,%fr6R,%fr6
  62         ldws            -16(%r30),%r28
  63         fstds           %fr6,-16(%r30)
  64         ldws            -12(%r30),%r21
  65         ldws            -16(%r30),%r20
  66         sub             %r24,%r21,%r22
  67         subb            %r25,%r20,%r1
  68         comib,=         0,%r1,L$2
  69         ldo             -64(%r30),%r30
  70
  71         add             %r22,%r23,%r22
  72         ldo             -1(%r28),%r28
  73 L$2:
  74         bv              0(%r2)
  75         stws            %r22,0(%r26)
  76
  77         .exit
  78         .procend