1! Z8000 __gmpn_sub_n -- Subtract two limb vectors of the same length > 0 and 2! store difference in a third limb vector. 3 4! Copyright 1993, 1994, 2000 Free Software Foundation, Inc. 5 6! This file is part of the GNU MP Library. 7 8! The GNU MP Library is free software; you can redistribute it and/or modify 9! it under the terms of the GNU Lesser General Public License as published by 10! the Free Software Foundation; either version 3 of the License, or (at your 11! option) any later version. 12 13! The GNU MP Library is distributed in the hope that it will be useful, but 14! WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 15! or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public 16! License for more details. 17 18! You should have received a copy of the GNU Lesser General Public License 19! along with the GNU MP Library. If not, see http://www.gnu.org/licenses/. 20 21 22! INPUT PARAMETERS 23! res_ptr r7 24! s1_ptr r6 25! s2_ptr r5 26! size r4 27 28! If we are really crazy, we can use push to write a few result words 29! backwards, using push just because it is faster than reg+disp. We'd 30! then add 2x the number of words written to r7... 31 32 unseg 33 .text 34 even 35 global ___gmpn_sub_n 36___gmpn_sub_n: 37 pop r0,@r6 38 pop r1,@r5 39 sub r0,r1 40 ld @r7,r0 41 dec r4 42 jr eq,Lend 43Loop: pop r0,@r6 44 pop r1,@r5 45 sbc r0,r1 46 inc r7,#2 47 ld @r7,r0 48 dec r4 49 jr ne,Loop 50Lend: ld r2,r4 ! use 0 already in r4 51 adc r2,r2 52 ret t 53