1998-02-12 20:52:41 +01:00
|
|
|
/* hppa rshift, lshift
|
|
|
|
|
* Copyright (C) 1992, 1994 Free Software Foundation, Inc.
|
1998-02-24 19:50:46 +01:00
|
|
|
* Copyright (C) 1998 Free Software Foundation, Inc.
|
1998-02-12 20:52:41 +01:00
|
|
|
*
|
1998-02-24 19:50:46 +01:00
|
|
|
* This file is part of GNUPG.
|
1998-02-12 20:52:41 +01:00
|
|
|
*
|
1998-02-24 19:50:46 +01:00
|
|
|
* GNUPG is free software; you can redistribute it and/or modify
|
1998-02-12 20:52:41 +01:00
|
|
|
* 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.
|
|
|
|
|
*
|
1998-02-24 19:50:46 +01:00
|
|
|
* GNUPG is distributed in the hope that it will be useful,
|
1998-02-12 20:52:41 +01:00
|
|
|
* 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
|
|
|
|
|
*
|
|
|
|
|
* Note: This code is heavily based on the GNU MP Library.
|
|
|
|
|
* Actually it's the same code with only minor changes in the
|
|
|
|
|
* way the data is stored; this is to support the abstraction
|
|
|
|
|
* of an optional secure memory allocation which may be used
|
|
|
|
|
* to avoid revealing of sensitive data due to paging etc.
|
|
|
|
|
* The GNU MP Library itself is published under the LGPL;
|
|
|
|
|
* however I decided to publish this code under the plain GPL.
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/*******************
|
|
|
|
|
* mpi_limb_t
|
|
|
|
|
* mpihelp_lshift( mpi_ptr_t wp, (gr26)
|
|
|
|
|
* mpi_ptr_t up, (gr25)
|
|
|
|
|
* mpi_size_t usize, (gr24)
|
|
|
|
|
* unsigned cnt) (gr23)
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
.code
|
|
|
|
|
.export mpihelp_lshift
|
|
|
|
|
mpihelp_lshift
|
|
|
|
|
.proc
|
|
|
|
|
.callinfo frame=64,no_calls
|
|
|
|
|
.entry
|
|
|
|
|
|
|
|
|
|
sh2add %r24,%r25,%r25
|
|
|
|
|
sh2add %r24,%r26,%r26
|
|
|
|
|
ldws,mb -4(0,%r25),%r22
|
|
|
|
|
subi 32,%r23,%r1
|
|
|
|
|
mtsar %r1
|
|
|
|
|
addib,= -1,%r24,L$0004
|
|
|
|
|
vshd %r0,%r22,%r28 ; compute carry out limb
|
|
|
|
|
ldws,mb -4(0,%r25),%r29
|
|
|
|
|
addib,= -1,%r24,L$0002
|
|
|
|
|
vshd %r22,%r29,%r20
|
|
|
|
|
|
|
|
|
|
L$loop ldws,mb -4(0,%r25),%r22
|
|
|
|
|
stws,mb %r20,-4(0,%r26)
|
|
|
|
|
addib,= -1,%r24,L$0003
|
|
|
|
|
vshd %r29,%r22,%r20
|
|
|
|
|
ldws,mb -4(0,%r25),%r29
|
|
|
|
|
stws,mb %r20,-4(0,%r26)
|
|
|
|
|
addib,<> -1,%r24,L$loop
|
|
|
|
|
vshd %r22,%r29,%r20
|
|
|
|
|
|
|
|
|
|
L$0002 stws,mb %r20,-4(0,%r26)
|
|
|
|
|
vshd %r29,%r0,%r20
|
|
|
|
|
bv 0(%r2)
|
|
|
|
|
stw %r20,-4(0,%r26)
|
|
|
|
|
L$0003 stws,mb %r20,-4(0,%r26)
|
|
|
|
|
L$0004 vshd %r22,%r0,%r20
|
|
|
|
|
bv 0(%r2)
|
|
|
|
|
stw %r20,-4(0,%r26)
|
|
|
|
|
|
|
|
|
|
.exit
|
|
|
|
|
.procend
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/*******************
|
|
|
|
|
* mpi_limb_t
|
|
|
|
|
* mpihelp_rshift( mpi_ptr_t wp, (gr26)
|
|
|
|
|
* mpi_ptr_t up, (gr25)
|
|
|
|
|
* mpi_size_t usize, (gr24)
|
|
|
|
|
* unsigned cnt) (gr23)
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
.code
|
|
|
|
|
.export mpihelp_rshift
|
|
|
|
|
mpihelp_rshift
|
|
|
|
|
.proc
|
|
|
|
|
.callinfo frame=64,no_calls
|
|
|
|
|
.entry
|
|
|
|
|
|
|
|
|
|
ldws,ma 4(0,%r25),%r22
|
|
|
|
|
mtsar %r23
|
|
|
|
|
addib,= -1,%r24,L$r004
|
|
|
|
|
vshd %r22,%r0,%r28 ; compute carry out limb
|
|
|
|
|
ldws,ma 4(0,%r25),%r29
|
|
|
|
|
addib,= -1,%r24,L$r002
|
|
|
|
|
vshd %r29,%r22,%r20
|
|
|
|
|
|
|
|
|
|
L$roop ldws,ma 4(0,%r25),%r22
|
|
|
|
|
stws,ma %r20,4(0,%r26)
|
|
|
|
|
addib,= -1,%r24,L$r003
|
|
|
|
|
vshd %r22,%r29,%r20
|
|
|
|
|
ldws,ma 4(0,%r25),%r29
|
|
|
|
|
stws,ma %r20,4(0,%r26)
|
|
|
|
|
addib,<> -1,%r24,L$roop
|
|
|
|
|
vshd %r29,%r22,%r20
|
|
|
|
|
|
|
|
|
|
L$r002 stws,ma %r20,4(0,%r26)
|
|
|
|
|
vshd %r0,%r29,%r20
|
|
|
|
|
bv 0(%r2)
|
|
|
|
|
stw %r20,0(0,%r26)
|
|
|
|
|
L$r003 stws,ma %r20,4(0,%r26)
|
|
|
|
|
L$r004 vshd %r0,%r22,%r20
|
|
|
|
|
bv 0(%r2)
|
|
|
|
|
stw %r20,0(0,%r26)
|
|
|
|
|
|
|
|
|
|
.exit
|
|
|
|
|
.procend
|
|
|
|
|
|
