mirror of
git://git.gnupg.org/gnupg.git
synced 2025-01-22 14:57:02 +01:00
72 lines
1.6 KiB
ArmAsm
72 lines
1.6 KiB
ArmAsm
/* PowerPC-32 lshift
|
|
*
|
|
* Copyright (C) 1995, 1998 Free Software Foundation, Inc.
|
|
*
|
|
* This file is part of GnuPG.
|
|
*
|
|
* GnuPG is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* GnuPG 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 General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
|
|
*/
|
|
|
|
|
|
/*******************
|
|
* mpi_limb_t
|
|
* mpihelp_lshift( mpi_ptr_t wp, (r3)
|
|
* mpi_ptr_t up, (r4)
|
|
* mpi_size_t usize, (r5)
|
|
* unsigned cnt) (r6)
|
|
*/
|
|
|
|
.toc
|
|
.csect .text[PR]
|
|
.align 2
|
|
.globl mpihelp_lshift
|
|
.globl .mpihelp_lshift
|
|
.csect mpihelp_lshift[DS]
|
|
mpihelp_lshift:
|
|
.long .mpihelp_lshift, TOC[tc0], 0
|
|
.csect .text[PR]
|
|
.mpihelp_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
|
|
|
|
|