# PowerPC-32 __mpn_lshift --
# 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
# cnt r6
.toc
.csect .text[PR]
.align 2
.globl __mpn_lshift
.globl .__mpn_lshift
.csect __mpn_lshift[DS]
__mpn_lshift:
.long .__mpn_lshift, TOC[tc0], 0
.csect .text[PR]
.__mpn_lshift:
mtctr 5 # copy size into CTR
slwi 0,5,2
add 7,3,0 # make r7 point at end of res
add 4,4,0 # make r4 point at end of s1
subfic 8,6,32
lwzu 11,-4(4) # load first s1 limb
srw 3,11,8 # compute function return value
bdz Lend1
Loop: lwzu 10,-4(4)
slw 9,11,6
srw 12,10,8
or 9,9,12
stwu 9,-4(7)
bdz Lend2
lwzu 11,-4(4)
slw 9,10,6
srw 12,11,8
or 9,9,12
stwu 9,-4(7)
bdnz Loop
Lend1: slw 0,11,6
stw 0,-4(7)
blr
Lend2: slw 0,10,6
stw 0,-4(7)
blr