diff options
Diffstat (limited to 'rts/gmp/mpn/sh/sub_n.s')
| -rw-r--r-- | rts/gmp/mpn/sh/sub_n.s | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/rts/gmp/mpn/sh/sub_n.s b/rts/gmp/mpn/sh/sub_n.s new file mode 100644 index 0000000000..5f818c95a8 --- /dev/null +++ b/rts/gmp/mpn/sh/sub_n.s @@ -0,0 +1,47 @@ +! SH __gmpn_sub_n -- Subtract two limb vectors of the same length > 0 and store +! difference in a third limb vector. + +! Copyright (C) 1995, 1997, 2000 Free Software Foundation, Inc. + +! This file is part of the GNU MP Library. + +! The GNU MP Library is free software; you can redistribute it and/or modify +! it under the terms of the GNU Lesser General Public License as published by +! the Free Software Foundation; either version 2.1 of the License, or (at your +! option) any later version. + +! The GNU MP Library is distributed in the hope that it will be useful, but +! WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY +! or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public +! License for more details. + +! You should have received a copy of the GNU Lesser General Public License +! along with the GNU MP Library; see the file COPYING.LIB. If not, write to +! the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, +! MA 02111-1307, USA. + + +! INPUT PARAMETERS +! res_ptr r4 +! s1_ptr r5 +! s2_ptr r6 +! size r7 + + .text + .align 2 + .global ___gmpn_sub_n +___gmpn_sub_n: + mov #0,r3 ! clear cy save reg + +Loop: mov.l @r5+,r1 + mov.l @r6+,r2 + shlr r3 ! restore cy + subc r2,r1 + movt r3 ! save cy + mov.l r1,@r4 + dt r7 + bf.s Loop + add #4,r4 + + rts + mov r3,r0 ! return carry-out from most sign. limb |