2002-06-29 14:15:02 +00:00
|
|
|
/* sparc rshift
|
|
|
|
|
*
|
|
|
|
|
* Copyright (C) 1995, 1996, 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
|
2007-10-23 10:48:09 +00:00
|
|
|
* the Free Software Foundation; either version 3 of the License, or
|
2002-06-29 14:15:02 +00:00
|
|
|
* (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
|
2007-10-23 10:48:09 +00:00
|
|
|
* along with this program; if not, see <http://www.gnu.org/licenses/>.
|
2002-06-29 14:15:02 +00:00
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
! INPUT PARAMETERS
|
|
|
|
|
! res_ptr %o0
|
|
|
|
|
! src_ptr %o1
|
|
|
|
|
! size %o2
|
|
|
|
|
! cnt %o3
|
|
|
|
|
|
|
|
|
|
#include "sysdep.h"
|
|
|
|
|
|
|
|
|
|
.text
|
|
|
|
|
.align 4
|
|
|
|
|
.global C_SYMBOL_NAME(mpihelp_rshift)
|
|
|
|
|
C_SYMBOL_NAME(mpihelp_rshift):
|
|
|
|
|
ld [%o1],%g2 ! load first limb
|
|
|
|
|
sub %g0,%o3,%o5 ! negate shift count
|
|
|
|
|
add %o2,-1,%o2
|
|
|
|
|
andcc %o2,4-1,%g4 ! number of limbs in first loop
|
|
|
|
|
sll %g2,%o5,%g1 ! compute function result
|
|
|
|
|
be L0 ! if multiple of 4 limbs, skip first loop
|
|
|
|
|
st %g1,[%sp+80]
|
|
|
|
|
|
|
|
|
|
sub %o2,%g4,%o2 ! adjust count for main loop
|
|
|
|
|
|
|
|
|
|
Loop0: ld [%o1+4],%g3
|
|
|
|
|
add %o0,4,%o0
|
|
|
|
|
add %o1,4,%o1
|
|
|
|
|
addcc %g4,-1,%g4
|
|
|
|
|
srl %g2,%o3,%o4
|
|
|
|
|
sll %g3,%o5,%g1
|
|
|
|
|
mov %g3,%g2
|
|
|
|
|
or %o4,%g1,%o4
|
|
|
|
|
bne Loop0
|
|
|
|
|
st %o4,[%o0-4]
|
|
|
|
|
|
|
|
|
|
L0: tst %o2
|
|
|
|
|
be Lend
|
|
|
|
|
nop
|
|
|
|
|
|
|
|
|
|
Loop: ld [%o1+4],%g3
|
|
|
|
|
add %o0,16,%o0
|
|
|
|
|
addcc %o2,-4,%o2
|
|
|
|
|
srl %g2,%o3,%o4
|
|
|
|
|
sll %g3,%o5,%g1
|
|
|
|
|
|
|
|
|
|
ld [%o1+8],%g2
|
|
|
|
|
srl %g3,%o3,%g4
|
|
|
|
|
or %o4,%g1,%o4
|
|
|
|
|
st %o4,[%o0-16]
|
|
|
|
|
sll %g2,%o5,%g1
|
|
|
|
|
|
|
|
|
|
ld [%o1+12],%g3
|
|
|
|
|
srl %g2,%o3,%o4
|
|
|
|
|
or %g4,%g1,%g4
|
|
|
|
|
st %g4,[%o0-12]
|
|
|
|
|
sll %g3,%o5,%g1
|
|
|
|
|
|
|
|
|
|
ld [%o1+16],%g2
|
|
|
|
|
srl %g3,%o3,%g4
|
|
|
|
|
or %o4,%g1,%o4
|
|
|
|
|
st %o4,[%o0-8]
|
|
|
|
|
sll %g2,%o5,%g1
|
|
|
|
|
|
|
|
|
|
add %o1,16,%o1
|
|
|
|
|
or %g4,%g1,%g4
|
|
|
|
|
bne Loop
|
|
|
|
|
st %g4,[%o0-4]
|
|
|
|
|
|
|
|
|
|
Lend: srl %g2,%o3,%g2
|
|
|
|
|
st %g2,[%o0-0]
|
|
|
|
|
retl
|
|
|
|
|
ld [%sp+80],%o0
|
|
|
|
|
|
