| # I960 __gmpn_add_n -- Add two limb vectors of the same length > 0 and store |
| # sum in a third limb vector. |
| |
| # Copyright 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 3 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. If not, see http://www.gnu.org/licenses/. |
| |
| .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 |
