add_n.s
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- # 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