diff options
Diffstat (limited to 'rts/gmp/mpn/i960/add_n.s')
| -rw-r--r-- | rts/gmp/mpn/i960/add_n.s | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/rts/gmp/mpn/i960/add_n.s b/rts/gmp/mpn/i960/add_n.s new file mode 100644 index 0000000000..387317a397 --- /dev/null +++ b/rts/gmp/mpn/i960/add_n.s @@ -0,0 +1,43 @@ +# I960 __gmpn_add_n -- Add two limb vectors of the same length > 0 and store +# sum in a third limb vector. + +# Copyright (C) 1995, 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. + +.text + .align 4 + .globl ___gmpn_add_n +___gmpn_add_n: + mov 0,g6 # clear carry-save register + cmpo 1,0 # clear cy + +Loop: subo 1,g3,g3 # update loop counter + ld (g1),g5 # load from s1_ptr + addo 4,g1,g1 # s1_ptr++ + ld (g2),g4 # load from s2_ptr + addo 4,g2,g2 # s2_ptr++ + cmpo g6,1 # restore cy from g6, relies on cy being 0 + addc g4,g5,g4 # main add + subc 0,0,g6 # save cy in g6 + st g4,(g0) # store result to res_ptr + addo 4,g0,g0 # res_ptr++ + cmpobne 0,g3,Loop # when branch is taken, clears C bit + + mov g6,g0 + ret |