submul_1.s
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- # ns32000 __gmpn_submul_1 -- Multiply a limb vector with a limb and subtract
- # the result from a second limb vector.
- # Copyright 1992, 1994, 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 3 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. If not, see http://www.gnu.org/licenses/.
- .align 1
- .globl ___gmpn_submul_1
- ___gmpn_submul_1:
- save [r3,r4,r5,r6,r7]
- negd 24(sp),r4
- movd r4,r0
- lshd 2,r0
- movd 20(sp),r5
- subd r0,r5 # r5 -> to end of S1
- movd 16(sp),r6
- subd r0,r6 # r6 -> to end of RES
- subd r0,r0 # r0 = 0, cy = 0
- movd 28(sp),r7 # r7 = s2_limb
- Loop: movd r5[r4:d],r2
- meid r7,r2 # r2 = low_prod, r3 = high_prod
- addcd r0,r2 # r2 = low_prod + cy_limb
- movd r3,r0 # r0 = new cy_limb
- addcd 0,r0
- subd r2,r6[r4:d]
- acbd 1,r4,Loop
- addcd 0,r0
- restore [r7,r6,r5,r4,r3]
- ret 0