1; Clipper __gmpn_sub_n -- Subtract two limb vectors of the same length > 0 and 2; store difference in a third limb vector. 3 4; Copyright 1995, 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.text 22 .align 16 23.globl ___gmpn_sub_n 24___gmpn_sub_n: 25 subq $8,sp 26 storw r6,(sp) 27 loadw 12(sp),r2 28 loadw 16(sp),r3 29 loadq $0,r6 ; clear carry-save register 30 31.Loop: loadw (r1),r4 32 loadw (r2),r5 33 addwc r6,r6 ; restore carry from r6 34 subwc r5,r4 35 storw r4,(r0) 36 subwc r6,r6 ; save carry in r6 37 addq $4,r0 38 addq $4,r1 39 addq $4,r2 40 subq $1,r3 41 brne .Loop 42 43 negw r6,r0 44 loadw (sp),r6 45 addq $8,sp 46 ret sp 47