?? addmul_1.s
字號:
! SH2 __gmpn_addmul_1 -- Multiply a limb vector with a limb and add! the result to a second 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 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., 51 Franklin Street, Fifth Floor, Boston,! MA 02110-1301, USA.! INPUT PARAMETERS! res_ptr r4! s1_ptr r5! size r6! s2_limb r7 .text .align 1 .global ___gmpn_addmul_1___gmpn_addmul_1: mov #0,r2 ! cy_limb = 0 mov #0,r0 ! Keep r0 = 0 for entire loop clrtLoop: mov.l @r5+,r3 dmulu.l r3,r7 sts macl,r1 addc r2,r1 ! lo_prod += old cy_limb sts mach,r2 ! new cy_limb = hi_prod mov.l @r4,r3 addc r0,r2 ! cy_limb += T, T = 0 addc r3,r1 addc r0,r2 ! cy_limb += T, T = 0 dt r6 mov.l r1,@r4 bf.s Loop add #4,r4 rts mov r2,r0
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