arch/c6x/lib/divremi.S

   1 ;;  Copyright 2010  Free Software Foundation, Inc.
   2 ;;  Contributed by Bernd Schmidt <bernds@codesourcery.com>.
   3 ;;
   4 ;; This program is free software; you can redistribute it and/or modify
   5 ;; it under the terms of the GNU General Public License as published by
   6 ;; the Free Software Foundation; either version 2 of the License, or
   7 ;; (at your option) any later version.
   8 ;;
   9 ;; This program is distributed in the hope that it will be useful,
  10 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 ;; GNU General Public License for more details.
  13 ;;
  14 ;; You should have received a copy of the GNU General Public License
  15 ;; along with this program; if not, write to the Free Software
  16 ;; Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  17
  18 #include <linux/linkage.h>
  19
  20         .text
  21 ENTRY(__c6xabi_divremi)
  22         stw     .d2t2   B3, *B15--[2]
  23 ||      cmpgt   .l1     0, A4, A1
  24 ||      cmpgt   .l2     0, B4, B2
  25 ||      mv      .s1     A4, A5
  26 ||      call    .s2     __c6xabi_divu
  27
  28    [A1] neg     .l1     A4, A4
  29 || [B2] neg     .l2     B4, B4
  30 ||      xor     .s2x    B2, A1, B0
  31 ||      mv      .d2     B4, B2
  32
  33    [B0] addkpc  .s2     _divu_ret_1, B3, 1
  34   [!B0] addkpc  .s2     _divu_ret_2, B3, 1
  35         nop     2
  36 _divu_ret_1:
  37         neg     .l1     A4, A4
  38 _divu_ret_2:
  39         ldw     .d2t2   *++B15[2], B3
  40
  41         mpy32   .m1x    A4, B2, A6
  42         nop             3
  43         ret     .s2     B3
  44         sub     .l1     A5, A6, A5
  45         nop     4
  46 ENDPROC(__c6xabi_divremi)