mirror of
git://git.gnupg.org/gnupg.git
synced 2024-12-23 10:29:58 +01:00
93 lines
2.2 KiB
ArmAsm
93 lines
2.2 KiB
ArmAsm
|
/* hppa rshift
|
||
|
|
* optimized for the PA7100, where it runs at 3.25 cycles/limb
|
||
|
|
*
|
||
|
|
* Copyright (C) 1992, 1994, 1998,
|
||
|
|
* 2001 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_rshift( mpi_ptr_t wp, (gr26)
|
||
|
|
* mpi_ptr_t up, (gr25)
|
||
|
|
* mpi_size_t usize, (gr24)
|
||
|
|
* unsigned cnt) (gr23)
|
||
|
|
*/
|
||
|
|
|
||
|
|
.code
|
||
|
|
.export mpihelp_rshift
|
||
|
|
.label mpihelp_rshift
|
||
|
|
.proc
|
||
|
|
.callinfo frame=64,no_calls
|
||
|
|
.entry
|
||
|
|
|
||
|
|
ldws,ma 4(0,%r25),%r22
|
||
|
|
mtsar %r23
|
||
|
|
addib,= -1,%r24,L$r004
|
||
|
|
vshd %r22,%r0,%r28 ; compute carry out limb
|
||
|
|
ldws,ma 4(0,%r25),%r29
|
||
|
|
addib,<= -5,%r24,L$rrest
|
||
|
|
vshd %r29,%r22,%r20
|
||
|
|
|
||
|
|
.label L$roop
|
||
|
|
ldws,ma 4(0,%r25),%r22
|
||
|
|
stws,ma %r20,4(0,%r26)
|
||
|
|
vshd %r22,%r29,%r20
|
||
|
|
ldws,ma 4(0,%r25),%r29
|
||
|
|
stws,ma %r20,4(0,%r26)
|
||
|
|
vshd %r29,%r22,%r20
|
||
|
|
ldws,ma 4(0,%r25),%r22
|
||
|
|
stws,ma %r20,4(0,%r26)
|
||
|
|
vshd %r22,%r29,%r20
|
||
|
|
ldws,ma 4(0,%r25),%r29
|
||
|
|
stws,ma %r20,4(0,%r26)
|
||
|
|
addib,> -4,%r24,L$roop
|
||
|
|
vshd %r29,%r22,%r20
|
||
|
|
|
||
|
|
.label L$rrest
|
||
|
|
addib,= 4,%r24,L$rend1
|
||
|
|
nop
|
||
|
|
.label L$eroop
|
||
|
|
ldws,ma 4(0,%r25),%r22
|
||
|
|
stws,ma %r20,4(0,%r26)
|
||
|
|
addib,<= -1,%r24,L$rend2
|
||
|
|
vshd %r22,%r29,%r20
|
||
|
|
ldws,ma 4(0,%r25),%r29
|
||
|
|
stws,ma %r20,4(0,%r26)
|
||
|
|
addib,> -1,%r24,L$eroop
|
||
|
|
vshd %r29,%r22,%r20
|
||
|
|
|
||
|
|
.label L$rend1
|
||
|
|
stws,ma %r20,4(0,%r26)
|
||
|
|
vshd %r0,%r29,%r20
|
||
|
|
bv 0(%r2)
|
||
|
|
stw %r20,0(0,%r26)
|
||
|
|
.label L$rend2
|
||
|
|
stws,ma %r20,4(0,%r26)
|
||
|
|
.label L$r004
|
||
|
|
vshd %r0,%r22,%r20
|
||
|
|
bv 0(%r2)
|
||
|
|
stw %r20,0(0,%r26)
|
||
|
|
|
||
|
|
.exit
|
||
|
|
.procend
|
||
|
|
|
||
|
|
|