File: [local] / OpenXM_contrib / gmp / mpn / sh / Attic / sub_n.s (download)
Revision 1.1.1.2 (vendor branch), Sat Sep 9 14:12:39 2000 UTC (23 years, 11 months ago) by maekawa
Branch: GMP
CVS Tags: maekawa-ipv6, VERSION_3_1_1, VERSION_3_1, RELEASE_1_2_2, RELEASE_1_2_1, RELEASE_1_1_3 Changes since 1.1.1.1: +9 -9
lines
Import gmp 3.1
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! 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