diff options
Diffstat (limited to 'contrib/libgmp/mpn/sparc64/add_n.s')
-rw-r--r-- | contrib/libgmp/mpn/sparc64/add_n.s | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/contrib/libgmp/mpn/sparc64/add_n.s b/contrib/libgmp/mpn/sparc64/add_n.s new file mode 100644 index 0000000..01d1f49 --- /dev/null +++ b/contrib/libgmp/mpn/sparc64/add_n.s @@ -0,0 +1,58 @@ +! SPARC v9 __mpn_add_n -- Add two limb vectors of the same length > 0 and store +! sum in a third limb vector. + +! Copyright (C) 1995, 1996 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 Library General Public License as published by +! the Free Software Foundation; either version 2 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 Library General Public +! License for more details. + +! You should have received a copy of the GNU Library 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 %o0 +! s1_ptr %o1 +! s2_ptr %o2 +! size %o3 + +.section ".text" + .align 4 + .global __mpn_add_n + .type __mpn_add_n,#function + .proc 04 +__mpn_add_n: + sub %g0,%o3,%g3 + sllx %o3,3,%g1 + add %o1,%g1,%o1 ! make s1_ptr point at end + add %o2,%g1,%o2 ! make s2_ptr point at end + add %o0,%g1,%o0 ! make res_ptr point at end + mov 0,%o4 ! clear carry variable + sllx %g3,3,%o5 ! compute initial address index + +.Loop: ldx [%o2+%o5],%g1 ! load s2 limb + add %g3,1,%g3 ! increment loop count + ldx [%o1+%o5],%g2 ! load s1 limb + addcc %g1,%o4,%g1 ! add s2 limb and carry variable + movcc %xcc,0,%o4 ! if carry-out, o4 was 1; clear it + addcc %g1,%g2,%g1 ! add s1 limb to sum + stx %g1,[%o0+%o5] ! store result + add %o5,8,%o5 ! increment address index + brnz,pt %g3,.Loop + movcs %xcc,1,%o4 ! if s1 add gave carry, record it + + retl + mov %o4,%o0 +.LLfe1: + .size __mpn_add_n,.LLfe1-__mpn_add_n |