sysdeps/hppa/rshift.S

   1 ;! HP-PA  __mpn_rshift --
   2
   3 ;! Copyright (C) 1992-2019 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 Lesser General Public License as published by
   9 ;! the Free Software Foundation; either version 2.1 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 Lesser General Public
  15 ;! License for more details.
  16
  17 ;! You should have received a copy of the GNU Lesser General Public License
  18 ;! along with the GNU MP Library.  If not, see
  19 ;! <https://www.gnu.org/licenses/>.
  20
  21
  22 ;! INPUT PARAMETERS
  23 ;! res_ptr      gr26
  24 ;! s_ptr        gr25
  25 ;! size         gr24
  26 ;! cnt          gr23
  27
  28         .text
  29         .export         __mpn_rshift
  30 __mpn_rshift:
  31         .proc
  32         .callinfo       frame=64,no_calls
  33         .entry
  34
  35         ldws,ma         4(%r25),%r22
  36         mtsar           %r23
  37         addib,=         -1,%r24,L$0004
  38         vshd            %r22,%r0,%r28           ;! compute carry out limb
  39         ldws,ma         4(%r25),%r29
  40         addib,=         -1,%r24,L$0002
  41         vshd            %r29,%r22,%r20
  42
  43 L$loop: ldws,ma         4(%r25),%r22
  44         stws,ma         %r20,4(%r26)
  45         addib,=         -1,%r24,L$0003
  46         vshd            %r22,%r29,%r20
  47         ldws,ma         4(%r25),%r29
  48         stws,ma         %r20,4(%r26)
  49         addib,<>        -1,%r24,L$loop
  50         vshd            %r29,%r22,%r20
  51
  52 L$0002: stws,ma         %r20,4(%r26)
  53         vshd            %r0,%r29,%r20
  54         bv              0(%r2)
  55         stw             %r20,0(%r26)
  56 L$0003: stws,ma         %r20,4(%r26)
  57 L$0004: vshd            %r0,%r22,%r20
  58         bv              0(%r2)
  59         stw             %r20,0(%r26)
  60
  61         .exit
  62         .procend