File: [local] / OpenXM / src / kan96xx / gmp-2.0.2-ssh-2 / mpn / powerpc32 / Attic / mul_1.s (download)
Revision 1.1.1.1 (vendor branch), Mon Oct 25 08:53:36 1999 UTC (24 years, 10 months ago) by takayama
Branch: TAKAYAMA
CVS Tags: RELEASE_20000124, RELEASE_1_1_2, GMP_2_0_2_SSH_2 Changes since 1.1: +0 -0
lines
gmp-2.0.2-ssh-2 is added.
It is a patched version of gmp-2.0.2 to compile on FreeBSD 3.3.
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# PowerPC-32 __mpn_mul_1 -- Multiply a limb vector with a limb and store
# the result in a second limb vector.
# Copyright (C) 1993, 1994, 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_mul_1[PR]
.align 2
.globl __mpn_mul_1
.globl .__mpn_mul_1
.csect __mpn_mul_1[DS]
__mpn_mul_1:
.long .__mpn_mul_1[PR], TOC[tc0], 0
.csect .__mpn_mul_1[PR]
.__mpn_mul_1:
mtctr 5
lwz 0,0(4)
mullw 7,0,6
mulhwu 10,0,6
addi 3,3,-4 # adjust res_ptr
addic 5,5,0 # clear cy with dummy insn
bdz Lend
Loop: lwzu 0,4(4)
stwu 7,4(3)
mullw 8,0,6
adde 7,8,10
mulhwu 10,0,6
bdnz Loop
Lend: stw 7,4(3)
addze 3,10
blr