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# PowerPC-32 __mpn_addmul_1 -- Multiply a limb vector with a limb and add
# the result to a second limb vector.
# Copyright (C) 1995 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 Library General Public License as published by
# the Free Software Foundation; either version 2 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 Library General Public
# License for more details.
# You should have received a copy of the GNU Library 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 r3
# s1_ptr r4
# size r5
# s2_limb r6
# This is a fairly straightforward implementation. The timing of the PC601
# is hard to understand, so I will wait to optimize this until I have some
# hardware to play with.
# The code trivially generalizes to 64 bit limbs for the PC620.
.toc
.csect .__mpn_addmul_1[PR]
.align 2
.globl __mpn_addmul_1
.globl .__mpn_addmul_1
.csect __mpn_addmul_1[DS]
__mpn_addmul_1:
.long .__mpn_addmul_1[PR], TOC[tc0], 0
.csect .__mpn_addmul_1[PR]
.__mpn_addmul_1:
mtctr 5
lwz 0,0(4)
mullw 7,0,6
mulhwu 10,0,6
lwz 9,0(3)
addc 8,7,9
addi 3,3,-4
bdz Lend
Loop: lwzu 0,4(4)
stwu 8,4(3)
mullw 8,0,6
adde 7,8,10
mulhwu 10,0,6
lwz 9,4(3)
addze 10,10
addc 8,7,9
bdnz Loop
Lend: stw 8,4(3)
addze 3,10
blr
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